mirror of https://github.com/elisescu/tty-server
Initial commit
commit
7c5547d7e1
@ -0,0 +1,11 @@
|
||||
public/
|
||||
frontend/public/
|
||||
output.log
|
||||
**/node_modules/
|
||||
.DS_Store
|
||||
bundle.js
|
||||
playground/
|
||||
.vscode/
|
||||
tty-server*
|
||||
tmp-*
|
||||
out/
|
@ -0,0 +1,11 @@
|
||||
language: go
|
||||
|
||||
go:
|
||||
- 1.12.x
|
||||
|
||||
node_js:
|
||||
- 12.4.0
|
||||
|
||||
# make frontend all won't work. The frontend assets have to be already built at the time of
|
||||
# evaluating the Makefile first time, so for now I do it in two turns.
|
||||
script: make frontend && make all
|
@ -0,0 +1,53 @@
|
||||
# This file is autogenerated, do not edit; changes may be undone by the next 'dep ensure'.
|
||||
|
||||
|
||||
[[projects]]
|
||||
digest = "1:cbec35fe4d5a4fba369a656a8cd65e244ea2c743007d8f6c1ccb132acf9d1296"
|
||||
name = "github.com/gorilla/mux"
|
||||
packages = ["."]
|
||||
pruneopts = "UT"
|
||||
revision = "00bdffe0f3c77e27d2cf6f5c70232a2d3e4d9c15"
|
||||
version = "v1.7.3"
|
||||
|
||||
[[projects]]
|
||||
digest = "1:e62657cca9badaa308d86e7716083e4c5933bb78e30a17743fc67f50be26f6f4"
|
||||
name = "github.com/gorilla/websocket"
|
||||
packages = ["."]
|
||||
pruneopts = "UT"
|
||||
revision = "c3e18be99d19e6b3e8f1559eea2c161a665c4b6b"
|
||||
version = "v1.4.1"
|
||||
|
||||
[[projects]]
|
||||
digest = "1:31e761d97c76151dde79e9d28964a812c46efc5baee4085b86f68f0c654450de"
|
||||
name = "github.com/konsorten/go-windows-terminal-sequences"
|
||||
packages = ["."]
|
||||
pruneopts = "UT"
|
||||
revision = "f55edac94c9bbba5d6182a4be46d86a2c9b5b50e"
|
||||
version = "v1.0.2"
|
||||
|
||||
[[projects]]
|
||||
digest = "1:04457f9f6f3ffc5fea48e71d62f2ca256637dee0a04d710288e27e05c8b41976"
|
||||
name = "github.com/sirupsen/logrus"
|
||||
packages = ["."]
|
||||
pruneopts = "UT"
|
||||
revision = "839c75faf7f98a33d445d181f3018b5c3409a45e"
|
||||
version = "v1.4.2"
|
||||
|
||||
[[projects]]
|
||||
branch = "master"
|
||||
digest = "1:e13350b7207ecc34977340d53522e0335dd36ed86ca7c346a36d2e88eb0fadfc"
|
||||
name = "golang.org/x/sys"
|
||||
packages = ["unix"]
|
||||
pruneopts = "UT"
|
||||
revision = "548cf772de5052aa878ccb47cdeb7d262b75c8ec"
|
||||
|
||||
[solve-meta]
|
||||
analyzer-name = "dep"
|
||||
analyzer-version = 1
|
||||
input-imports = [
|
||||
"github.com/gorilla/mux",
|
||||
"github.com/gorilla/websocket",
|
||||
"github.com/sirupsen/logrus",
|
||||
]
|
||||
solver-name = "gps-cdcl"
|
||||
solver-version = 1
|
@ -0,0 +1,15 @@
|
||||
[[constraint]]
|
||||
name = "github.com/gorilla/mux"
|
||||
version = "1.7.3"
|
||||
|
||||
[[constraint]]
|
||||
name = "github.com/gorilla/websocket"
|
||||
version = "1.4.1"
|
||||
|
||||
[[constraint]]
|
||||
name = "github.com/sirupsen/logrus"
|
||||
version = "1.4.2"
|
||||
|
||||
[prune]
|
||||
go-tests = true
|
||||
unused-packages = true
|
@ -0,0 +1,339 @@
|
||||
GNU GENERAL PUBLIC LICENSE
|
||||
Version 2, June 1991
|
||||
|
||||
Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
|
||||
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
||||
Everyone is permitted to copy and distribute verbatim copies
|
||||
of this license document, but changing it is not allowed.
|
||||
|
||||
Preamble
|
||||
|
||||
The licenses for most software are designed to take away your
|
||||
freedom to share and change it. By contrast, the GNU General Public
|
||||
License is intended to guarantee your freedom to share and change free
|
||||
software--to make sure the software is free for all its users. This
|
||||
General Public License applies to most of the Free Software
|
||||
Foundation's software and to any other program whose authors commit to
|
||||
using it. (Some other Free Software Foundation software is covered by
|
||||
the GNU Lesser General Public License instead.) You can apply it to
|
||||
your programs, too.
|
||||
|
||||
When we speak of free software, we are referring to freedom, not
|
||||
price. Our General Public Licenses are designed to make sure that you
|
||||
have the freedom to distribute copies of free software (and charge for
|
||||
this service if you wish), that you receive source code or can get it
|
||||
if you want it, that you can change the software or use pieces of it
|
||||
in new free programs; and that you know you can do these things.
|
||||
|
||||
To protect your rights, we need to make restrictions that forbid
|
||||
anyone to deny you these rights or to ask you to surrender the rights.
|
||||
These restrictions translate to certain responsibilities for you if you
|
||||
distribute copies of the software, or if you modify it.
|
||||
|
||||
For example, if you distribute copies of such a program, whether
|
||||
gratis or for a fee, you must give the recipients all the rights that
|
||||
you have. You must make sure that they, too, receive or can get the
|
||||
source code. And you must show them these terms so they know their
|
||||
rights.
|
||||
|
||||
We protect your rights with two steps: (1) copyright the software, and
|
||||
(2) offer you this license which gives you legal permission to copy,
|
||||
distribute and/or modify the software.
|
||||
|
||||
Also, for each author's protection and ours, we want to make certain
|
||||
that everyone understands that there is no warranty for this free
|
||||
software. If the software is modified by someone else and passed on, we
|
||||
want its recipients to know that what they have is not the original, so
|
||||
that any problems introduced by others will not reflect on the original
|
||||
authors' reputations.
|
||||
|
||||
Finally, any free program is threatened constantly by software
|
||||
patents. We wish to avoid the danger that redistributors of a free
|
||||
program will individually obtain patent licenses, in effect making the
|
||||
program proprietary. To prevent this, we have made it clear that any
|
||||
patent must be licensed for everyone's free use or not licensed at all.
|
||||
|
||||
The precise terms and conditions for copying, distribution and
|
||||
modification follow.
|
||||
|
||||
GNU GENERAL PUBLIC LICENSE
|
||||
TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
|
||||
|
||||
0. This License applies to any program or other work which contains
|
||||
a notice placed by the copyright holder saying it may be distributed
|
||||
under the terms of this General Public License. The "Program", below,
|
||||
refers to any such program or work, and a "work based on the Program"
|
||||
means either the Program or any derivative work under copyright law:
|
||||
that is to say, a work containing the Program or a portion of it,
|
||||
either verbatim or with modifications and/or translated into another
|
||||
language. (Hereinafter, translation is included without limitation in
|
||||
the term "modification".) Each licensee is addressed as "you".
|
||||
|
||||
Activities other than copying, distribution and modification are not
|
||||
covered by this License; they are outside its scope. The act of
|
||||
running the Program is not restricted, and the output from the Program
|
||||
is covered only if its contents constitute a work based on the
|
||||
Program (independent of having been made by running the Program).
|
||||
Whether that is true depends on what the Program does.
|
||||
|
||||
1. You may copy and distribute verbatim copies of the Program's
|
||||
source code as you receive it, in any medium, provided that you
|
||||
conspicuously and appropriately publish on each copy an appropriate
|
||||
copyright notice and disclaimer of warranty; keep intact all the
|
||||
notices that refer to this License and to the absence of any warranty;
|
||||
and give any other recipients of the Program a copy of this License
|
||||
along with the Program.
|
||||
|
||||
You may charge a fee for the physical act of transferring a copy, and
|
||||
you may at your option offer warranty protection in exchange for a fee.
|
||||
|
||||
2. You may modify your copy or copies of the Program or any portion
|
||||
of it, thus forming a work based on the Program, and copy and
|
||||
distribute such modifications or work under the terms of Section 1
|
||||
above, provided that you also meet all of these conditions:
|
||||
|
||||
a) You must cause the modified files to carry prominent notices
|
||||
stating that you changed the files and the date of any change.
|
||||
|
||||
b) You must cause any work that you distribute or publish, that in
|
||||
whole or in part contains or is derived from the Program or any
|
||||
part thereof, to be licensed as a whole at no charge to all third
|
||||
parties under the terms of this License.
|
||||
|
||||
c) If the modified program normally reads commands interactively
|
||||
when run, you must cause it, when started running for such
|
||||
interactive use in the most ordinary way, to print or display an
|
||||
announcement including an appropriate copyright notice and a
|
||||
notice that there is no warranty (or else, saying that you provide
|
||||
a warranty) and that users may redistribute the program under
|
||||
these conditions, and telling the user how to view a copy of this
|
||||
License. (Exception: if the Program itself is interactive but
|
||||
does not normally print such an announcement, your work based on
|
||||
the Program is not required to print an announcement.)
|
||||
|
||||
These requirements apply to the modified work as a whole. If
|
||||
identifiable sections of that work are not derived from the Program,
|
||||
and can be reasonably considered independent and separate works in
|
||||
themselves, then this License, and its terms, do not apply to those
|
||||
sections when you distribute them as separate works. But when you
|
||||
distribute the same sections as part of a whole which is a work based
|
||||
on the Program, the distribution of the whole must be on the terms of
|
||||
this License, whose permissions for other licensees extend to the
|
||||
entire whole, and thus to each and every part regardless of who wrote it.
|
||||
|
||||
Thus, it is not the intent of this section to claim rights or contest
|
||||
your rights to work written entirely by you; rather, the intent is to
|
||||
exercise the right to control the distribution of derivative or
|
||||
collective works based on the Program.
|
||||
|
||||
In addition, mere aggregation of another work not based on the Program
|
||||
with the Program (or with a work based on the Program) on a volume of
|
||||
a storage or distribution medium does not bring the other work under
|
||||
the scope of this License.
|
||||
|
||||
3. You may copy and distribute the Program (or a work based on it,
|
||||
under Section 2) in object code or executable form under the terms of
|
||||
Sections 1 and 2 above provided that you also do one of the following:
|
||||
|
||||
a) Accompany it with the complete corresponding machine-readable
|
||||
source code, which must be distributed under the terms of Sections
|
||||
1 and 2 above on a medium customarily used for software interchange; or,
|
||||
|
||||
b) Accompany it with a written offer, valid for at least three
|
||||
years, to give any third party, for a charge no more than your
|
||||
cost of physically performing source distribution, a complete
|
||||
machine-readable copy of the corresponding source code, to be
|
||||
distributed under the terms of Sections 1 and 2 above on a medium
|
||||
customarily used for software interchange; or,
|
||||
|
||||
c) Accompany it with the information you received as to the offer
|
||||
to distribute corresponding source code. (This alternative is
|
||||
allowed only for noncommercial distribution and only if you
|
||||
received the program in object code or executable form with such
|
||||
an offer, in accord with Subsection b above.)
|
||||
|
||||
The source code for a work means the preferred form of the work for
|
||||
making modifications to it. For an executable work, complete source
|
||||
code means all the source code for all modules it contains, plus any
|
||||
associated interface definition files, plus the scripts used to
|
||||
control compilation and installation of the executable. However, as a
|
||||
special exception, the source code distributed need not include
|
||||
anything that is normally distributed (in either source or binary
|
||||
form) with the major components (compiler, kernel, and so on) of the
|
||||
operating system on which the executable runs, unless that component
|
||||
itself accompanies the executable.
|
||||
|
||||
If distribution of executable or object code is made by offering
|
||||
access to copy from a designated place, then offering equivalent
|
||||
access to copy the source code from the same place counts as
|
||||
distribution of the source code, even though third parties are not
|
||||
compelled to copy the source along with the object code.
|
||||
|
||||
4. You may not copy, modify, sublicense, or distribute the Program
|
||||
except as expressly provided under this License. Any attempt
|
||||
otherwise to copy, modify, sublicense or distribute the Program is
|
||||
void, and will automatically terminate your rights under this License.
|
||||
However, parties who have received copies, or rights, from you under
|
||||
this License will not have their licenses terminated so long as such
|
||||
parties remain in full compliance.
|
||||
|
||||
5. You are not required to accept this License, since you have not
|
||||
signed it. However, nothing else grants you permission to modify or
|
||||
distribute the Program or its derivative works. These actions are
|
||||
prohibited by law if you do not accept this License. Therefore, by
|
||||
modifying or distributing the Program (or any work based on the
|
||||
Program), you indicate your acceptance of this License to do so, and
|
||||
all its terms and conditions for copying, distributing or modifying
|
||||
the Program or works based on it.
|
||||
|
||||
6. Each time you redistribute the Program (or any work based on the
|
||||
Program), the recipient automatically receives a license from the
|
||||
original licensor to copy, distribute or modify the Program subject to
|
||||
these terms and conditions. You may not impose any further
|
||||
restrictions on the recipients' exercise of the rights granted herein.
|
||||
You are not responsible for enforcing compliance by third parties to
|
||||
this License.
|
||||
|
||||
7. If, as a consequence of a court judgment or allegation of patent
|
||||
infringement or for any other reason (not limited to patent issues),
|
||||
conditions are imposed on you (whether by court order, agreement or
|
||||
otherwise) that contradict the conditions of this License, they do not
|
||||
excuse you from the conditions of this License. If you cannot
|
||||
distribute so as to satisfy simultaneously your obligations under this
|
||||
License and any other pertinent obligations, then as a consequence you
|
||||
may not distribute the Program at all. For example, if a patent
|
||||
license would not permit royalty-free redistribution of the Program by
|
||||
all those who receive copies directly or indirectly through you, then
|
||||
the only way you could satisfy both it and this License would be to
|
||||
refrain entirely from distribution of the Program.
|
||||
|
||||
If any portion of this section is held invalid or unenforceable under
|
||||
any particular circumstance, the balance of the section is intended to
|
||||
apply and the section as a whole is intended to apply in other
|
||||
circumstances.
|
||||
|
||||
It is not the purpose of this section to induce you to infringe any
|
||||
patents or other property right claims or to contest validity of any
|
||||
such claims; this section has the sole purpose of protecting the
|
||||
integrity of the free software distribution system, which is
|
||||
implemented by public license practices. Many people have made
|
||||
generous contributions to the wide range of software distributed
|
||||
through that system in reliance on consistent application of that
|
||||
system; it is up to the author/donor to decide if he or she is willing
|
||||
to distribute software through any other system and a licensee cannot
|
||||
impose that choice.
|
||||
|
||||
This section is intended to make thoroughly clear what is believed to
|
||||
be a consequence of the rest of this License.
|
||||
|
||||
8. If the distribution and/or use of the Program is restricted in
|
||||
certain countries either by patents or by copyrighted interfaces, the
|
||||
original copyright holder who places the Program under this License
|
||||
may add an explicit geographical distribution limitation excluding
|
||||
those countries, so that distribution is permitted only in or among
|
||||
countries not thus excluded. In such case, this License incorporates
|
||||
the limitation as if written in the body of this License.
|
||||
|
||||
9. The Free Software Foundation may publish revised and/or new versions
|
||||
of the General Public License from time to time. Such new versions will
|
||||
be similar in spirit to the present version, but may differ in detail to
|
||||
address new problems or concerns.
|
||||
|
||||
Each version is given a distinguishing version number. If the Program
|
||||
specifies a version number of this License which applies to it and "any
|
||||
later version", you have the option of following the terms and conditions
|
||||
either of that version or of any later version published by the Free
|
||||
Software Foundation. If the Program does not specify a version number of
|
||||
this License, you may choose any version ever published by the Free Software
|
||||
Foundation.
|
||||
|
||||
10. If you wish to incorporate parts of the Program into other free
|
||||
programs whose distribution conditions are different, write to the author
|
||||
to ask for permission. For software which is copyrighted by the Free
|
||||
Software Foundation, write to the Free Software Foundation; we sometimes
|
||||
make exceptions for this. Our decision will be guided by the two goals
|
||||
of preserving the free status of all derivatives of our free software and
|
||||
of promoting the sharing and reuse of software generally.
|
||||
|
||||
NO WARRANTY
|
||||
|
||||
11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
|
||||
FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
|
||||
OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
|
||||
PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
|
||||
OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
||||
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS
|
||||
TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE
|
||||
PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
|
||||
REPAIR OR CORRECTION.
|
||||
|
||||
12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
|
||||
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
|
||||
REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
|
||||
INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
|
||||
OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
|
||||
TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
|
||||
YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
|
||||
PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
|
||||
POSSIBILITY OF SUCH DAMAGES.
|
||||
|
||||
END OF TERMS AND CONDITIONS
|
||||
|
||||
How to Apply These Terms to Your New Programs
|
||||
|
||||
If you develop a new program, and you want it to be of the greatest
|
||||
possible use to the public, the best way to achieve this is to make it
|
||||
free software which everyone can redistribute and change under these terms.
|
||||
|
||||
To do so, attach the following notices to the program. It is safest
|
||||
to attach them to the start of each source file to most effectively
|
||||
convey the exclusion of warranty; and each file should have at least
|
||||
the "copyright" line and a pointer to where the full notice is found.
|
||||
|
||||
<one line to give the program's name and a brief idea of what it does.>
|
||||
Copyright (C) <year> <name of author>
|
||||
|
||||
This program is free software; you can redistribute it and/or modify
|
||||
it under the terms of the GNU General Public License as published by
|
||||
the Free Software Foundation; either version 2 of the License, or
|
||||
(at your option) any later version.
|
||||
|
||||
This program is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
GNU General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU General Public License along
|
||||
with this program; if not, write to the Free Software Foundation, Inc.,
|
||||
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
||||
|
||||
Also add information on how to contact you by electronic and paper mail.
|
||||
|
||||
If the program is interactive, make it output a short notice like this
|
||||
when it starts in an interactive mode:
|
||||
|
||||
Gnomovision version 69, Copyright (C) year name of author
|
||||
Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
|
||||
This is free software, and you are welcome to redistribute it
|
||||
under certain conditions; type `show c' for details.
|
||||
|
||||
The hypothetical commands `show w' and `show c' should show the appropriate
|
||||
parts of the General Public License. Of course, the commands you use may
|
||||
be called something other than `show w' and `show c'; they could even be
|
||||
mouse-clicks or menu items--whatever suits your program.
|
||||
|
||||
You should also get your employer (if you work as a programmer) or your
|
||||
school, if any, to sign a "copyright disclaimer" for the program, if
|
||||
necessary. Here is a sample; alter the names:
|
||||
|
||||
Yoyodyne, Inc., hereby disclaims all copyright interest in the program
|
||||
`Gnomovision' (which makes passes at compilers) written by James Hacker.
|
||||
|
||||
<signature of Ty Coon>, 1 April 1989
|
||||
Ty Coon, President of Vice
|
||||
|
||||
This General Public License does not permit incorporating your program into
|
||||
proprietary programs. If your program is a subroutine library, you may
|
||||
consider it more useful to permit linking proprietary applications with the
|
||||
library. If this is what you want to do, use the GNU Lesser General
|
||||
Public License instead of this License.
|
@ -0,0 +1,37 @@
|
||||
TTY_SERVER=./tty-server
|
||||
|
||||
TTY_SERVER_ASSETS=$(wildcard frontend/public/*)
|
||||
TTY_SERVER_SRC=$(wildcard *.go) assets_bundle.go
|
||||
|
||||
all: $(TTY_SERVER)
|
||||
@echo "Done"
|
||||
|
||||
# Building the server and tty-share
|
||||
$(TTY_SERVER): $(TTY_SERVER_SRC)
|
||||
go build -o $@
|
||||
|
||||
assets_bundle.go: $(TTY_SERVER_ASSETS)
|
||||
go get github.com/go-bindata/go-bindata/...
|
||||
go-bindata --prefix frontend/public/ -o $@ $^
|
||||
|
||||
%.zip: %
|
||||
zip $@ $^
|
||||
|
||||
frontend: force
|
||||
cd frontend && npm install && npm run build && cd -
|
||||
force:
|
||||
|
||||
clean:
|
||||
rm -fr tty-server assets_bundle.go frontend/public
|
||||
@echo "Cleaned"
|
||||
|
||||
## Development helper targets
|
||||
### Runs the server, without TLS/HTTPS (no need for localhost testing)
|
||||
runs: $(TTY_SERVER)
|
||||
$(TTY_SERVER) --url http://localhost:9090 --web_address :9090 --sender_address :7654 -frontend_path ./frontend/public
|
||||
### Runs the sender, without TLS (no need for localhost testing)
|
||||
runc:
|
||||
tty-share --useTLS=false --server localhost:7654
|
||||
|
||||
test:
|
||||
@go test github.com/elisescu/tty-share/testing -v
|
@ -0,0 +1,6 @@
|
||||
[![Build Status](https://travis-ci.com/elisescu/tty-server.svg?branch=master)](https://travis-ci.com/elisescu/tty-server)
|
||||
|
||||
# tty-server
|
||||
|
||||
Server side for [tty-share](https://github.com/elisescu/tty-share).
|
||||
|
File diff suppressed because one or more lines are too long
@ -0,0 +1,2 @@
|
||||
12.4.0
|
||||
|
@ -0,0 +1,9 @@
|
||||
# Readme #
|
||||
|
||||
## Building
|
||||
The frontend uses webpack to build everything in a bundle file. Run:
|
||||
```
|
||||
npm install
|
||||
webpack
|
||||
```
|
||||
|
File diff suppressed because it is too large
Load Diff
@ -0,0 +1,22 @@
|
||||
{
|
||||
"name": "tty-share",
|
||||
"version": "1.0.0",
|
||||
"description": "",
|
||||
"main": "",
|
||||
"scripts": {
|
||||
"watch": "TTY_SHARE_ENV=development webpack --watch",
|
||||
"build": "TTY_SHARE_ENV=production webpack"
|
||||
},
|
||||
"author": "elisescu",
|
||||
"license": "elisescu",
|
||||
"dependencies": {
|
||||
"copy-webpack-plugin": "4.5.1",
|
||||
"css-loader": "^3.0.0",
|
||||
"style-loader": "^0.23.1",
|
||||
"ts-loader": "^6.0.2",
|
||||
"typescript": "^3.5.2",
|
||||
"webpack": "^4.34.0",
|
||||
"webpack-cli": "^3.3.4",
|
||||
"xterm": "3.14.4"
|
||||
}
|
||||
}
|
@ -0,0 +1,147 @@
|
||||
@import url(https://fonts.googleapis.com/css?family=Raleway:300,700);
|
||||
|
||||
body {
|
||||
width:100%;
|
||||
height:100%;
|
||||
background:#0B486B;
|
||||
font-family: 'Raleway', sans-serif;
|
||||
font-weight:300;
|
||||
margin:0;
|
||||
padding:0;
|
||||
}
|
||||
|
||||
#title {
|
||||
text-align:center;
|
||||
font-size:40px;
|
||||
margin-top:40px;
|
||||
margin-bottom:-40px;
|
||||
position:relative;
|
||||
color:#fff;
|
||||
}
|
||||
|
||||
.circles:after {
|
||||
content:'';
|
||||
display:inline-block;
|
||||
width:100%;
|
||||
height:100px;
|
||||
background:#fff;
|
||||
position:absolute;
|
||||
top:-50px;
|
||||
left:0;
|
||||
transform:skewY(-4deg);
|
||||
-webkit-transform:skewY(-4deg);
|
||||
}
|
||||
|
||||
.circles {
|
||||
background:#fff;
|
||||
text-align: center;
|
||||
position: relative;
|
||||
margin-top:-60px;
|
||||
box-shadow:inset -1px -4px 4px rgba(0,0,0,0.2);
|
||||
}
|
||||
|
||||
.circles p {
|
||||
font-size: 240px;
|
||||
color: #fff;
|
||||
padding-top: 60px;
|
||||
position: relative;
|
||||
z-index: 9;
|
||||
line-height: 100%;
|
||||
}
|
||||
|
||||
.circles p small {
|
||||
font-size: 40px;
|
||||
line-height: 100%;
|
||||
vertical-align: top;
|
||||
}
|
||||
|
||||
.circles .circle.small {
|
||||
width: 140px;
|
||||
height: 140px;
|
||||
border-radius: 50%;
|
||||
background: #0B486B;
|
||||
position: absolute;
|
||||
z-index: 1;
|
||||
top: 80px;
|
||||
left: 50%;
|
||||
animation: 7s smallmove infinite cubic-bezier(1,.22,.71,.98);
|
||||
-webkit-animation: 7s smallmove infinite cubic-bezier(1,.22,.71,.98);
|
||||
animation-delay: 1.2s;
|
||||
-webkit-animation-delay: 1.2s;
|
||||
}
|
||||
|
||||
.circles .circle.med {
|
||||
width: 200px;
|
||||
height: 200px;
|
||||
border-radius: 50%;
|
||||
background: #0B486B;
|
||||
position: absolute;
|
||||
z-index: 1;
|
||||
top: 0;
|
||||
left: 10%;
|
||||
animation: 7s medmove infinite cubic-bezier(.32,.04,.15,.75);
|
||||
-webkit-animation: 7s medmove infinite cubic-bezier(.32,.04,.15,.75);
|
||||
animation-delay: 0.4s;
|
||||
-webkit-animation-delay: 0.4s;
|
||||
}
|
||||
|
||||
.circles .circle.big {
|
||||
width: 400px;
|
||||
height: 400px;
|
||||
border-radius: 50%;
|
||||
background: #0B486B;
|
||||
position: absolute;
|
||||
z-index: 1;
|
||||
top: 200px;
|
||||
right: 0;
|
||||
animation: 8s bigmove infinite;
|
||||
-webkit-animation: 8s bigmove infinite;
|
||||
animation-delay: 3s;
|
||||
-webkit-animation-delay: 1s;
|
||||
}
|
||||
|
||||
@-webkit-keyframes smallmove {
|
||||
0% { top: 10px; left: 45%; opacity: 1; }
|
||||
25% { top: 300px; left: 40%; opacity:0.7; }
|
||||
50% { top: 240px; left: 55%; opacity:0.4; }
|
||||
75% { top: 100px; left: 40%; opacity:0.6; }
|
||||
100% { top: 10px; left: 45%; opacity: 1; }
|
||||
}
|
||||
@keyframes smallmove {
|
||||
0% { top: 10px; left: 45%; opacity: 1; }
|
||||
25% { top: 300px; left: 40%; opacity:0.7; }
|
||||
50% { top: 240px; left: 55%; opacity:0.4; }
|
||||
75% { top: 100px; left: 40%; opacity:0.6; }
|
||||
100% { top: 10px; left: 45%; opacity: 1; }
|
||||
}
|
||||
|
||||
@-webkit-keyframes medmove {
|
||||
0% { top: 0px; left: 20%; opacity: 1; }
|
||||
25% { top: 300px; left: 80%; opacity:0.7; }
|
||||
50% { top: 240px; left: 55%; opacity:0.4; }
|
||||
75% { top: 100px; left: 40%; opacity:0.6; }
|
||||
100% { top: 0px; left: 20%; opacity: 1; }
|
||||
}
|
||||
|
||||
@keyframes medmove {
|
||||
0% { top: 0px; left: 20%; opacity: 1; }
|
||||
25% { top: 300px; left: 80%; opacity:0.7; }
|
||||
50% { top: 240px; left: 55%; opacity:0.4; }
|
||||
75% { top: 100px; left: 40%; opacity:0.6; }
|
||||
100% { top: 0px; left: 20%; opacity: 1; }
|
||||
}
|
||||
|
||||
@-webkit-keyframes bigmove {
|
||||
0% { top: 0px; right: 4%; opacity: 0.5; }
|
||||
25% { top: 100px; right: 40%; opacity:0.4; }
|
||||
50% { top: 240px; right: 45%; opacity:0.8; }
|
||||
75% { top: 100px; right: 35%; opacity:0.6; }
|
||||
100% { top: 0px; right: 4%; opacity: 0.5; }
|
||||
}
|
||||
@keyframes bigmove {
|
||||
0% { top: 0px; right: 4%; opacity: 0.5; }
|
||||
25% { top: 100px; right: 40%; opacity:0.4; }
|
||||
50% { top: 240px; right: 45%; opacity:0.8; }
|
||||
75% { top: 100px; right: 35%; opacity:0.6; }
|
||||
100% { top: 0px; right: 4%; opacity: 0.5; }
|
||||
}
|
@ -0,0 +1,23 @@
|
||||
<!-- This is taken from: https://colorlib.com/wp/free-404-error-page-templates/ -->
|
||||
<!DOCTYPE html>
|
||||
|
||||
<html lang="en">
|
||||
<head>
|
||||
<link rel="stylesheet" type="text/css" href="/static/404.css">
|
||||
</head>
|
||||
<body>
|
||||
<section id="not-found">
|
||||
<div id="title">Something's wrong</div>
|
||||
<div class="circles">
|
||||
<p>404
|
||||
<br>
|
||||
<small>Page not found</small>
|
||||
</p>
|
||||
<span class="circle big"></span>
|
||||
<span class="circle med"></span>
|
||||
<span class="circle small"></span>
|
||||
</div>
|
||||
</section>
|
||||
</body>
|
||||
|
||||
</html>
|
File diff suppressed because one or more lines are too long
@ -0,0 +1 @@
|
||||
Hi there
|
@ -0,0 +1,22 @@
|
||||
<html>
|
||||
<head>
|
||||
<link rel="stylesheet" type="text/css" href="/static/bootstrap.min.css">
|
||||
</head>
|
||||
|
||||
<style>
|
||||
.jumbotron {
|
||||
background-color: #0B486B;
|
||||
color: #ffffff;
|
||||
font-family: 'Raleway', sans-serif;
|
||||
}
|
||||
</style>
|
||||
|
||||
<body>
|
||||
<div class="jumbotron jumbotron-fluid">
|
||||
<div class="container">
|
||||
<h1 class="display-4">Invalid session</h1>
|
||||
<p class="lead">This session doesn't exist, or has already ended.</p>
|
||||
</div>
|
||||
</div>
|
||||
</body>
|
||||
</html>
|
@ -0,0 +1,21 @@
|
||||
<!doctype html>
|
||||
<html>
|
||||
<head>
|
||||
<meta charset="UTF-8">
|
||||
<title>Terminal</title>
|
||||
</head>
|
||||
<body>
|
||||
<div id="terminal"></div>
|
||||
<div id="settings"></div>
|
||||
<script type="text/javascript">
|
||||
window.ttyInitialData = {
|
||||
sessionID: {{.SessionID}},
|
||||
salt: {{.Salt}},
|
||||
wsPath: {{.WSPath}}
|
||||
}
|
||||
console.log("Initial data", window.ttyInitialData)
|
||||
</script>
|
||||
<script src="/static/tty-receiver.js"></script>
|
||||
</body>
|
||||
</html>
|
||||
|
@ -0,0 +1,10 @@
|
||||
{
|
||||
"compilerOptions": {
|
||||
"sourceMap": true,
|
||||
"noImplicitAny": true,
|
||||
"module": "commonjs",
|
||||
"target": "es5",
|
||||
"jsx": "react",
|
||||
"allowJs": true
|
||||
}
|
||||
}
|
@ -0,0 +1,156 @@
|
||||
/**
|
||||
*
|
||||
* Base64 encode / decode
|
||||
* http://www.webtoolkit.info/
|
||||
*
|
||||
**/
|
||||
|
||||
var Base64 = {
|
||||
|
||||
// private property
|
||||
_keyStr: "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=",
|
||||
|
||||
// public method for encoding
|
||||
encode: function (input) {
|
||||
var output = "";
|
||||
var chr1, chr2, chr3, enc1, enc2, enc3, enc4;
|
||||
var i = 0;
|
||||
|
||||
input = Base64._utf8_encode(input);
|
||||
|
||||
while (i < input.length) {
|
||||
|
||||
chr1 = input.charCodeAt(i++);
|
||||
chr2 = input.charCodeAt(i++);
|
||||
chr3 = input.charCodeAt(i++);
|
||||
|
||||
enc1 = chr1 >> 2;
|
||||
enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);
|
||||
enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);
|
||||
enc4 = chr3 & 63;
|
||||
|
||||
if (isNaN(chr2)) {
|
||||
enc3 = enc4 = 64;
|
||||
} else if (isNaN(chr3)) {
|
||||
enc4 = 64;
|
||||
}
|
||||
|
||||
output = output +
|
||||
this._keyStr.charAt(enc1) + this._keyStr.charAt(enc2) +
|
||||
this._keyStr.charAt(enc3) + this._keyStr.charAt(enc4);
|
||||
|
||||
}
|
||||
|
||||
return output;
|
||||
},
|
||||
|
||||
// public method for decoding
|
||||
decode: function (input) {
|
||||
var output = "";
|
||||
var chr1, chr2, chr3;
|
||||
var enc1, enc2, enc3, enc4;
|
||||
var i = 0;
|
||||
|
||||
input = input.replace(/[^A-Za-z0-9\+\/\=]/g, "");
|
||||
|
||||
while (i < input.length) {
|
||||
|
||||
enc1 = this._keyStr.indexOf(input.charAt(i++));
|
||||
enc2 = this._keyStr.indexOf(input.charAt(i++));
|
||||
enc3 = this._keyStr.indexOf(input.charAt(i++));
|
||||
enc4 = this._keyStr.indexOf(input.charAt(i++));
|
||||
|
||||
chr1 = (enc1 << 2) | (enc2 >> 4);
|
||||
chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
|
||||
chr3 = ((enc3 & 3) << 6) | enc4;
|
||||
|
||||
output = output + String.fromCharCode(chr1);
|
||||
|
||||
if (enc3 != 64) {
|
||||
output = output + String.fromCharCode(chr2);
|
||||
}
|
||||
if (enc4 != 64) {
|
||||
output = output + String.fromCharCode(chr3);
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
output = Base64._utf8_decode(output);
|
||||
|
||||
return output;
|
||||
|
||||
},
|
||||
|
||||
// private method for UTF-8 encoding
|
||||
_utf8_encode: function (string) {
|
||||
string = string.replace(/\r\n/g, "\n");
|
||||
var utftext = "";
|
||||
|
||||
for (var n = 0; n < string.length; n++) {
|
||||
|
||||
var c = string.charCodeAt(n);
|
||||
|
||||
if (c < 128) {
|
||||
utftext += String.fromCharCode(c);
|
||||
}
|
||||
else if ((c > 127) && (c < 2048)) {
|
||||
utftext += String.fromCharCode((c >> 6) | 192);
|
||||
utftext += String.fromCharCode((c & 63) | 128);
|
||||
}
|
||||
else {
|
||||
utftext += String.fromCharCode((c >> 12) | 224);
|
||||
utftext += String.fromCharCode(((c >> 6) & 63) | 128);
|
||||
utftext += String.fromCharCode((c & 63) | 128);
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
return utftext;
|
||||
},
|
||||
|
||||
// private method for UTF-8 decoding
|
||||
_utf8_decode: function (utftext) {
|
||||
let string = "";
|
||||
let i = 0;
|
||||
let c = 0;
|
||||
let c1 = 0;
|
||||
let c2 = 0;
|
||||
let c3 = 0;
|
||||
|
||||
while (i < utftext.length) {
|
||||
|
||||
c = utftext.charCodeAt(i);
|
||||
|
||||
if (c < 128) {
|
||||
string += String.fromCharCode(c);
|
||||
i++;
|
||||
}
|
||||
else if ((c > 191) && (c < 224)) {
|
||||
c2 = utftext.charCodeAt(i + 1);
|
||||
string += String.fromCharCode(((c & 31) << 6) | (c2 & 63));
|
||||
i += 2;
|
||||
}
|
||||
else {
|
||||
c2 = utftext.charCodeAt(i + 1);
|
||||
c3 = utftext.charCodeAt(i + 2);
|
||||
string += String.fromCharCode(((c & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63));
|
||||
i += 3;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
return string;
|
||||
},
|
||||
|
||||
base64ToArrayBuffer: function (input) {
|
||||
var binary_string = window.atob(input);
|
||||
var len = binary_string.length;
|
||||
var bytes = new Uint8Array( len );
|
||||
for (var i = 0; i < len; i++) {
|
||||
bytes[i] = binary_string.charCodeAt(i);
|
||||
}
|
||||
return bytes;
|
||||
}
|
||||
}
|
||||
|
||||
export default Base64;
|
@ -0,0 +1,13 @@
|
||||
html, body {
|
||||
width: 100%;
|
||||
height: 100%;
|
||||
margin: 0;
|
||||
}
|
||||
|
||||
#terminal {
|
||||
position: fixed;
|
||||
top: 0;
|
||||
width: 100%;
|
||||
height: 100%;
|
||||
}
|
||||
|
@ -0,0 +1,28 @@
|
||||
import 'xterm/dist/xterm.css';
|
||||
import './main.css';
|
||||
|
||||
import { Terminal } from 'xterm';
|
||||
import * as pbkdf2 from 'pbkdf2';
|
||||
|
||||
import { TTYReceiver } from './tty-receiver';
|
||||
|
||||
const term = new Terminal({
|
||||
cursorBlink: true,
|
||||
macOptionIsMeta: true,
|
||||
});
|
||||
|
||||
const derivedKey = pbkdf2.pbkdf2Sync('password', 'salt', 4096, 32, 'sha256');
|
||||
console.log(derivedKey);
|
||||
|
||||
let wsAddress = "";
|
||||
if (window.location.protocol === "https:") {
|
||||
wsAddress = 'wss://';
|
||||
} else {
|
||||
wsAddress = "ws://";
|
||||
}
|
||||
|
||||
let ttyWindow = window as any;
|
||||
wsAddress += ttyWindow.location.host + ttyWindow.ttyInitialData.wsPath;
|
||||
|
||||
|
||||
const ttyReceiver = new TTYReceiver(wsAddress, document.getElementById('terminal') as HTMLDivElement);
|
@ -0,0 +1,114 @@
|
||||
import { Terminal, IEvent, IDisposable } from "xterm";
|
||||
|
||||
import base64 from './base64';
|
||||
|
||||
interface IRectSize {
|
||||
width: number;
|
||||
height: number;
|
||||
}
|
||||
|
||||
class TTYReceiver {
|
||||
private xterminal: Terminal;
|
||||
private containerElement: HTMLElement;
|
||||
|
||||
constructor(wsAddress: string, container: HTMLDivElement) {
|
||||
const connection = new WebSocket(wsAddress);
|
||||
|
||||
this.xterminal = new Terminal({
|
||||
cursorBlink: true,
|
||||
macOptionIsMeta: true,
|
||||
scrollback: 0,
|
||||
fontSize: 12,
|
||||
letterSpacing: 0,
|
||||
});
|
||||
|
||||
this.containerElement = container;
|
||||
this.xterminal.open(container);
|
||||
|
||||
connection.onclose = (evt: CloseEvent) => {
|
||||
|
||||
this.xterminal.blur();
|
||||
this.xterminal.setOption('cursorBlink', false);
|
||||
this.xterminal.clear();
|
||||
this.xterminal.write('Session closed');
|
||||
}
|
||||
|
||||
this.xterminal.focus();
|
||||
|
||||
const containerPixSize = this.getElementPixelsSize(container);
|
||||
const newFontSize = this.guessNewFontSize(this.xterminal.cols, this.xterminal.rows, containerPixSize.width, containerPixSize.height);
|
||||
this.xterminal.setOption('fontSize', newFontSize);
|
||||
|
||||
connection.onmessage = (ev: MessageEvent) => {
|
||||
let message = JSON.parse(ev.data)
|
||||
let msgData = base64.decode(message.Data)
|
||||
|
||||
if (message.Type === "Write") {
|
||||
let writeMsg = JSON.parse(msgData)
|
||||
this.xterminal.writeUtf8(base64.base64ToArrayBuffer(writeMsg.Data));
|
||||
}
|
||||
|
||||
if (message.Type == "WinSize") {
|
||||
let winSizeMsg = JSON.parse(msgData)
|
||||
|
||||
const containerPixSize = this.getElementPixelsSize(container);
|
||||
const newFontSize = this.guessNewFontSize(winSizeMsg.Cols, winSizeMsg.Rows, containerPixSize.width, containerPixSize.height);
|
||||
this.xterminal.setOption('fontSize', newFontSize);
|
||||
|
||||
// Now set the new size.
|
||||
this.xterminal.resize(winSizeMsg.Cols, winSizeMsg.Rows)
|
||||
}
|
||||
}
|
||||
|
||||
// TODO: .on() is deprecated. Should be replaced.
|
||||
this.xterminal.on('data', function (data) {
|
||||
let writeMessage = {
|
||||
Type: "Write",
|
||||
Data: base64.encode(JSON.stringify({ Size: data.length, Data: base64.encode(data)})),
|
||||
}
|
||||
let dataToSend = JSON.stringify(writeMessage)
|
||||
connection.send(dataToSend);
|
||||
});
|
||||
|
||||
}
|
||||
|
||||
// Get the pixels size of the element, after all CSS was applied. This will be used in an ugly
|
||||
// hack to guess what fontSize to set on the xterm object. Horrible hack, but I feel less bad
|
||||
// about it seeing that VSV does it too:
|
||||
// https://github.com/microsoft/vscode/blob/d14ee7613fcead91c5c3c2bddbf288c0462be876/src/vs/workbench/parts/terminal/electron-browser/terminalInstance.ts#L363
|
||||
private getElementPixelsSize(element: HTMLElement): IRectSize {
|
||||
const defView = this.containerElement.ownerDocument.defaultView;
|
||||
let width = parseInt(defView.getComputedStyle(element).getPropertyValue('width').replace('px', ''), 10);
|
||||
let height = parseInt(defView.getComputedStyle(element).getPropertyValue('height').replace('px', ''), 10);
|
||||
|
||||
return {
|
||||
width,
|
||||
height,
|
||||
}
|
||||
}
|
||||
|
||||
// Tries to guess the new font size, for the new terminal size, so that the rendered terminal
|
||||
// will have the newWidth and newHeight dimensions
|
||||
private guessNewFontSize(newCols: number, newRows: number, targetWidth: number, targetHeight: number): number {
|
||||
const cols = this.xterminal.cols;
|
||||
const rows = this.xterminal.rows;
|
||||
const fontSize = this.xterminal.getOption('fontSize');
|
||||
const xtermPixelsSize = this.getElementPixelsSize(this.containerElement.querySelector(".xterm-screen"));
|
||||
|
||||
const newHFontSizeMultiplier = (cols / newCols) * (targetWidth / xtermPixelsSize.width);
|
||||
const newVFontSizeMultiplier = (rows / newRows) * (targetHeight / xtermPixelsSize.height);
|
||||
|
||||
let newFontSize;
|
||||
|
||||
if (newHFontSizeMultiplier > newVFontSizeMultiplier) {
|
||||
newFontSize = Math.floor(fontSize * newVFontSizeMultiplier);
|
||||
} else {
|
||||
newFontSize = Math.floor(fontSize * newHFontSizeMultiplier);
|
||||
}
|
||||
return newFontSize;
|
||||
}
|
||||
}
|
||||
|
||||
export {
|
||||
TTYReceiver
|
||||
}
|
@ -0,0 +1,49 @@
|
||||
const webpack = require("webpack");
|
||||
const copyWebpackPlugin = require('copy-webpack-plugin')
|
||||
|
||||
const develBuild = process.env.TTY_SHARE_ENV === 'development';
|
||||
|
||||
let mainConfig = {
|
||||
entry: {
|
||||
'tty-receiver': './tty-receiver/main.ts',
|
||||
},
|
||||
output: {
|
||||
path: __dirname + '/public/',
|
||||
filename: '[name].js',
|
||||
},
|
||||
mode: develBuild ? 'development' : 'production',
|
||||
module: {
|
||||
rules: [
|
||||
{
|
||||
test: /\.tsx?$/,
|
||||
use: 'ts-loader',
|
||||
exclude: /node_modules/
|
||||
},
|
||||
{
|
||||
test: /node_modules.+xterm.+\.map$/,
|
||||
use: ['ignore-loader']
|
||||
},
|
||||
{
|
||||
test: /\.css$/,
|
||||
use: ['style-loader', 'css-loader']
|
||||
}
|
||||
]
|
||||
},
|
||||
resolve: {
|
||||
extensions: [".ts", ".tsx", ".js"],
|
||||
},
|
||||
plugins: [
|
||||
new copyWebpackPlugin([
|
||||
'static',
|
||||
'templates',
|
||||
], {
|
||||
debug: 'info',
|
||||
}),
|
||||
],
|
||||
};
|
||||
|
||||
if (develBuild) {
|
||||
mainConfig.devtool = 'inline-source-map';
|
||||
}
|
||||
|
||||
module.exports = mainConfig;
|
@ -0,0 +1,150 @@
|
||||
package main
|
||||
|
||||
import (
|
||||
"encoding/json"
|
||||
"errors"
|
||||
"fmt"
|
||||
"io"
|
||||
)
|
||||
|
||||
type ProtocolMessageIDType string
|
||||
|
||||
const (
|
||||
MsgIDSenderInitRequest = "SenderInitRequest"
|
||||
MsgIDSenderInitReply = "SenderInitReply"
|
||||
MsgIDSenderNewReceiverConnected = "SenderNewReceiverConnected"
|
||||
MsgIDReceiverInitRequest = "ReceiverInitRequest"
|
||||
MsgIDReceiverInitReply = "ReceiverInitReply"
|
||||
MsgIDWrite = "Write"
|
||||
MsgIDWinSize = "WinSize"
|
||||
)
|
||||
|
||||
// Message used to encapsulate the rest of the bessages bellow
|
||||
type MsgAll struct {
|
||||
Type ProtocolMessageIDType
|
||||
Data []byte
|
||||
}
|
||||
|
||||
// These messages are used between the server and the sender/receiver
|
||||
type MsgTTYSenderInitRequest struct {
|
||||
Salt string
|
||||
PasswordVerifierA string
|
||||
}
|
||||
|
||||
type MsgTTYSenderInitReply struct {
|
||||
ReceiverURLWebReadWrite string
|
||||
}
|
||||
|
||||
type MsgTTYSenderNewReceiverConnected struct {
|
||||
Name string
|
||||
}
|
||||
|
||||
type MsgTTYReceiverInitRequest struct {
|
||||
ChallengeReply string
|
||||
}
|
||||
|
||||
type MsgTTYReceiverInitReply struct {
|
||||
}
|
||||
|
||||
// These messages are not intended for the server, so they are just forwarded by it to the remote
|
||||
// side.
|
||||
type MsgTTYWrite struct {
|
||||
Data []byte
|
||||
Size int
|
||||
}
|
||||
|
||||
type MsgTTYWinSize struct {
|
||||
Cols int
|
||||
Rows int
|
||||
}
|
||||
|
||||
func ReadAndUnmarshalMsg(reader io.Reader, aMessage interface{}) (err error) {
|
||||
var wrapperMsg MsgAll
|
||||
// Wait here for the right message to come
|
||||
dec := json.NewDecoder(reader)
|
||||
err = dec.Decode(&wrapperMsg)
|
||||
|
||||
if err != nil {
|
||||
return errors.New("Cannot decode message: " + err.Error())
|
||||
}
|
||||
|
||||
err = json.Unmarshal(wrapperMsg.Data, aMessage)
|
||||
|
||||
if err != nil {
|
||||
return errors.New("Cannot decode message: " + err.Error())
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
func MarshalMsg(aMessage interface{}) (_ []byte, err error) {
|
||||
var msg MsgAll
|
||||
|
||||
if initRequestMsg, ok := aMessage.(MsgTTYSenderInitRequest); ok {
|
||||
msg.Type = MsgIDSenderInitRequest
|
||||
msg.Data, err = json.Marshal(initRequestMsg)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
return json.Marshal(msg)
|
||||
}
|
||||
|
||||
if initReplyMsg, ok := aMessage.(MsgTTYSenderInitReply); ok {
|
||||
msg.Type = MsgIDSenderInitReply
|
||||
msg.Data, err = json.Marshal(initReplyMsg)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
return json.Marshal(msg)
|
||||
}
|
||||
|
||||
if writeMsg, ok := aMessage.(MsgTTYWrite); ok {
|
||||
msg.Type = MsgIDWrite
|
||||
msg.Data, err = json.Marshal(writeMsg)
|
||||
//fmt.Printf("Sent write message %s\n", string(writeMsg.Data))
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
return json.Marshal(msg)
|
||||
}
|
||||
|
||||
if winChangedMsg, ok := aMessage.(MsgTTYWinSize); ok {
|
||||
msg.Type = MsgIDWinSize
|
||||
msg.Data, err = json.Marshal(winChangedMsg)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
return json.Marshal(msg)
|
||||
}
|
||||
|
||||
if newRcvMsg, ok := aMessage.(MsgTTYSenderNewReceiverConnected); ok {
|
||||
msg.Type = MsgIDSenderNewReceiverConnected
|
||||
msg.Data, err = json.Marshal(newRcvMsg)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
return json.Marshal(msg)
|
||||
}
|
||||
|
||||
return nil, nil
|
||||
}
|
||||
|
||||
func MarshalAndWriteMsg(writer io.Writer, aMessage interface{}) (err error) {
|
||||
b, err := MarshalMsg(aMessage)
|
||||
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
n, err := writer.Write(b)
|
||||
|
||||
if n != len(b) {
|
||||
err = fmt.Errorf("Unable to write : wrote %d out of %d bytes", n, len(b))
|
||||
return
|
||||
}
|
||||
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
return
|
||||
}
|
@ -0,0 +1,294 @@
|
||||
package main
|
||||
|
||||
import (
|
||||
"errors"
|
||||
"html/template"
|
||||
"mime"
|
||||
"net"
|
||||
"net/http"
|
||||
"os"
|
||||
"path/filepath"
|
||||
"sync"
|
||||
|
||||
"github.com/gorilla/mux"
|
||||
"github.com/gorilla/websocket"
|
||||
)
|
||||
|
||||
const (
|
||||
errorInvalidSession = iota
|
||||
errorNotFound = iota
|
||||
errorNotAllowed = iota
|
||||
)
|
||||
|
||||
var log = MainLogger
|
||||
|
||||
// SessionTemplateModel used for templating
|
||||
type SessionTemplateModel struct {
|
||||
SessionID string
|
||||
Salt string
|
||||
WSPath string
|
||||
}
|
||||
|
||||
// TTYServerConfig is used to configure the tty server before it is started
|
||||
type TTYServerConfig struct {
|
||||
WebAddress string
|
||||
TTYSenderAddress string
|
||||
ServerURL string
|
||||
// The TLS Cert and Key can be null, if TLS should not be used
|
||||
TLSCertFile string
|
||||
TLSKeyFile string
|
||||
FrontendPath string
|
||||
}
|
||||
|
||||
// TTYServer represents the instance of a tty server
|
||||
type TTYServer struct {
|
||||
httpServer *http.Server
|
||||
ttySendersListener net.Listener
|
||||
config TTYServerConfig
|
||||
activeSessions map[string]*ttyShareSession
|
||||
activeSessionsRWLock sync.RWMutex
|
||||
}
|
||||
|
||||
func (server *TTYServer) serveContent(w http.ResponseWriter, r *http.Request, name string) {
|
||||
// If a path to the frontend resources was passed, serve from there, otherwise, serve from the
|
||||
// builtin bundle
|
||||
if server.config.FrontendPath == "" {
|
||||
file, err := Asset(name)
|
||||
|
||||
if err != nil {
|
||||
w.WriteHeader(http.StatusNotFound)
|
||||
return
|
||||
}
|
||||
|
||||
ctype := mime.TypeByExtension(filepath.Ext(name))
|
||||
if ctype == "" {
|
||||
ctype = http.DetectContentType(file)
|
||||
}
|
||||
w.Header().Set("Content-Type", ctype)
|
||||
w.Write(file)
|
||||
} else {
|
||||
filePath := server.config.FrontendPath + string(os.PathSeparator) + name
|
||||
_, err := os.Open(filePath)
|
||||
|
||||
if err != nil {
|
||||
log.Errorf("Couldn't find resource: %s at %s", name, filePath)
|
||||
w.WriteHeader(http.StatusNotFound)
|
||||
return
|
||||
}
|
||||
log.Debugf("Serving %s from %s", name, filePath)
|
||||
|
||||
http.ServeFile(w, r, filePath)
|
||||
}
|
||||
}
|
||||
|
||||
// NewTTYServer creates a new instance
|
||||
func NewTTYServer(config TTYServerConfig) (server *TTYServer) {
|
||||
server = &TTYServer{
|
||||
config: config,
|
||||
}
|
||||
server.httpServer = &http.Server{
|
||||
Addr: config.WebAddress,
|
||||
}
|
||||
routesHandler := mux.NewRouter()
|
||||
|
||||
routesHandler.PathPrefix("/static/").Handler(http.StripPrefix("/static/",
|
||||
http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
|
||||
server.serveContent(w, r, r.URL.Path)
|
||||
})))
|
||||
|
||||
routesHandler.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
|
||||
http.Redirect(w, r, "https://github.com/elisescu/tty-share", http.StatusMovedPermanently)
|
||||
})
|
||||
routesHandler.HandleFunc("/s/{sessionID}", func(w http.ResponseWriter, r *http.Request) {
|
||||
server.handleSession(w, r)
|
||||
})
|
||||
routesHandler.HandleFunc("/ws/{sessionID}", func(w http.ResponseWriter, r *http.Request) {
|
||||
server.handleWebsocket(w, r)
|
||||
})
|
||||
routesHandler.NotFoundHandler = http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
|
||||
server.serveContent(w, r, "404.html")
|
||||
})
|
||||
|
||||
server.activeSessions = make(map[string]*ttyShareSession)
|
||||
server.httpServer.Handler = routesHandler
|
||||
return server
|
||||
}
|
||||
|
||||
func getWSPath(sessionID string) string {
|
||||
return "/ws/" + sessionID
|
||||
}
|
||||
|
||||
func (server *TTYServer) handleWebsocket(w http.ResponseWriter, r *http.Request) {
|
||||
vars := mux.Vars(r)
|
||||
sessionID := vars["sessionID"]
|
||||
defer log.Debug("Finished WS connection for ", sessionID)
|
||||
|
||||
// Validate incoming request.
|
||||
if r.Method != "GET" {
|
||||
w.WriteHeader(http.StatusForbidden)
|
||||
return
|
||||
}
|
||||
|
||||
// Upgrade to Websocket mode.
|
||||
upgrader := websocket.Upgrader{
|
||||
ReadBufferSize: 1024,
|
||||
WriteBufferSize: 1024,
|
||||
}
|
||||
conn, err := upgrader.Upgrade(w, r, nil)
|
||||
|
||||
if err != nil {
|
||||
log.Error("Cannot create the WS connection for session ", sessionID, ". Error: ", err.Error())
|
||||
return
|
||||
}
|
||||
|
||||
session := getSession(server, sessionID)
|
||||
|
||||
if session == nil {
|
||||
log.Error("WE connection for invalid sessionID: ", sessionID, ". Killing it.")
|
||||
w.WriteHeader(http.StatusForbidden)
|
||||
return
|
||||
}
|
||||
|
||||
session.HandleReceiver(newWSConnection(conn))
|
||||
}
|
||||
|
||||
func (server *TTYServer) handleSession(w http.ResponseWriter, r *http.Request) {
|
||||
vars := mux.Vars(r)
|
||||
sessionID := vars["sessionID"]
|
||||
|
||||
log.Debug("Handling web TTYReceiver session: ", sessionID)
|
||||
|
||||
session := getSession(server, sessionID)
|
||||
|
||||
// No valid session with this ID
|
||||
if session == nil {
|
||||
server.serveContent(w, r, "invalid-session.html")
|
||||
return
|
||||
}
|
||||
|
||||
var t *template.Template
|
||||
var err error
|
||||
if server.config.FrontendPath == "" {
|
||||
templateDta, err := Asset("tty-receiver.in.html")
|
||||
|
||||
if err != nil {
|
||||
panic("Cannot find the tty-receiver html template")
|
||||
}
|
||||
|
||||
t = template.New("tty-receiver.html")
|
||||
_, err = t.Parse(string(templateDta))
|
||||
} else {
|
||||
t, err = template.ParseFiles(server.config.FrontendPath + string(os.PathSeparator) + "tty-receiver.in.html")
|
||||
}
|
||||
|
||||
if err != nil {
|
||||
panic("Cannot parse the tty-receiver html template")
|
||||
}
|
||||
|
||||
templateModel := SessionTemplateModel{
|
||||
SessionID: sessionID,
|
||||
Salt: "salt&pepper",
|
||||
WSPath: getWSPath(sessionID),
|
||||
}
|
||||
err = t.Execute(w, templateModel)
|
||||
|
||||
if err != nil {
|
||||
panic("Cannot execute the tty-receiver html template")
|
||||
}
|
||||
}
|
||||
|
||||
func addNewSession(server *TTYServer, session *ttyShareSession) {
|
||||
server.activeSessionsRWLock.Lock()
|
||||
server.activeSessions[session.GetID()] = session
|
||||
server.activeSessionsRWLock.Unlock()
|
||||
}
|
||||
|
||||
func removeSession(server *TTYServer, session *ttyShareSession) {
|
||||
server.activeSessionsRWLock.Lock()
|
||||
delete(server.activeSessions, session.GetID())
|
||||
server.activeSessionsRWLock.Unlock()
|
||||
}
|
||||
|
||||
func getSession(server *TTYServer, sessionID string) (session *ttyShareSession) {
|
||||
// TODO: move this in a better place
|
||||
server.activeSessionsRWLock.RLock()
|
||||
session = server.activeSessions[sessionID]
|
||||
server.activeSessionsRWLock.RUnlock()
|
||||
return
|
||||
}
|
||||
|
||||
func handleTTYSenderConnection(server *TTYServer, conn net.Conn) {
|
||||
defer conn.Close()
|
||||
|
||||
session := newTTYShareSession(conn, server.config.ServerURL)
|
||||
|
||||
if err := session.InitSender(); err != nil {
|
||||
log.Warnf("Cannot create session with %s. Error: %s", conn.RemoteAddr().String(), err.Error())
|
||||
return
|
||||
}
|
||||
|
||||
addNewSession(server, session)
|
||||
|
||||
session.HandleSenderConnection()
|
||||
|
||||
removeSession(server, session)
|
||||
log.Debug("Finished session ", session.GetID(), ". Removing it.")
|
||||
}
|
||||
|
||||
// Listen starts listening on connections
|
||||
func (server *TTYServer) Listen() (err error) {
|
||||
var wg sync.WaitGroup
|
||||
runTLS := server.config.TLSCertFile != "" && server.config.TLSKeyFile != ""
|
||||
|
||||
// Start listening on the frontend side
|
||||
wg.Add(1)
|
||||
go func() {
|
||||
if !runTLS {
|
||||
err = server.httpServer.ListenAndServe()
|
||||
} else {
|
||||
err = server.httpServer.ListenAndServeTLS(server.config.TLSCertFile, server.config.TLSKeyFile)
|
||||
}
|
||||
// Just in case we are existing because of an error, close the other listener too
|
||||
if server.ttySendersListener != nil {
|
||||
server.ttySendersListener.Close()
|
||||
}
|
||||
wg.Done()
|
||||
}()
|
||||
|
||||
// TODO: Add support for listening for connections over TLS
|
||||
// Listen on connections on the tty sender side
|
||||
server.ttySendersListener, err = net.Listen("tcp", server.config.TTYSenderAddress)
|
||||
if err != nil {
|
||||
log.Error("Cannot create the front server. Error: ", err.Error())
|
||||
return
|
||||
}
|
||||
|
||||
for {
|
||||
connection, err := server.ttySendersListener.Accept()
|
||||
if err == nil {
|
||||
go handleTTYSenderConnection(server, connection)
|
||||
} else {
|
||||
break
|
||||
}
|
||||
}
|
||||
// Close the http side too
|
||||
if server.httpServer != nil {
|
||||
server.httpServer.Close()
|
||||
}
|
||||
|
||||
wg.Wait()
|
||||
log.Debug("Server finished")
|
||||
return
|
||||
}
|
||||
|
||||
// Stop closes down the server
|
||||
func (server *TTYServer) Stop() error {
|
||||
log.Debug("Stopping the server")
|
||||
err1 := server.httpServer.Close()
|
||||
err2 := server.ttySendersListener.Close()
|
||||
if err1 != nil || err2 != nil {
|
||||
//TODO: do this nicer
|
||||
return errors.New(err1.Error() + err2.Error())
|
||||
}
|
||||
return nil
|
||||
}
|
@ -0,0 +1,47 @@
|
||||
package main
|
||||
|
||||
import (
|
||||
"flag"
|
||||
"os"
|
||||
"os/signal"
|
||||
|
||||
logrus "github.com/sirupsen/logrus"
|
||||
)
|
||||
|
||||
// MainLogger is the logger that will be used across the whole main package. I whish I knew of a better way
|
||||
var MainLogger = logrus.New()
|
||||
|
||||
func main() {
|
||||
webAddress := flag.String("web_address", ":80", "The bind address for the web interface. This is the listening address for the web server that hosts the \"browser terminal\". You might want to change this if you don't want to use the port 80, or only bind the localhost.")
|
||||
senderAddress := flag.String("sender_address", ":6543", "The bind address for the tty-share TLS connections. tty-share tool will connect to this address.")
|
||||
url := flag.String("url", "http://localhost", "The public web URL the server will be accessible at. This will be sent back to the tty-share tool to display it to the user.")
|
||||
frontendPath := flag.String("frontend_path", "", "The path to the frontend resources. By default, these resources are included in the server binary, so you only need this path if you don't want to use the bundled ones.")
|
||||
flag.Parse()
|
||||
|
||||
log := MainLogger
|
||||
log.SetLevel(logrus.DebugLevel)
|
||||
|
||||
config := TTYServerConfig{
|
||||
WebAddress: *webAddress,
|
||||
TTYSenderAddress: *senderAddress,
|
||||
ServerURL: *url,
|
||||
FrontendPath: *frontendPath,
|
||||
}
|
||||
|
||||
server := NewTTYServer(config)
|
||||
|
||||
// Install a signal and wait until we get Ctrl-C
|
||||
c := make(chan os.Signal, 1)
|
||||
signal.Notify(c, os.Interrupt)
|
||||
|
||||
go func() {
|
||||
s := <-c
|
||||
log.Debug("Received signal <", s, ">. Stopping the server")
|
||||
server.Stop()
|
||||
}()
|
||||
|
||||
log.Info("Listening on address: http://", config.WebAddress, ", and TCP://", config.TTYSenderAddress)
|
||||
err := server.Listen()
|
||||
|
||||
log.Debug("Exiting. Error: ", err)
|
||||
}
|
@ -0,0 +1,198 @@
|
||||
package main
|
||||
|
||||
import (
|
||||
"container/list"
|
||||
"crypto/rand"
|
||||
"encoding/base64"
|
||||
"encoding/json"
|
||||
"net"
|
||||
"sync"
|
||||
)
|
||||
|
||||
type sessionInfo struct {
|
||||
ID string
|
||||
URLWebReadWrite string
|
||||
}
|
||||
|
||||
type ttyShareSession struct {
|
||||
sessionID string
|
||||
serverURL string
|
||||
mainRWLock sync.RWMutex
|
||||
ttySenderConnection *TTYProtocolConn
|
||||
ttyReceiverConnections *list.List
|
||||
isAlive bool
|
||||
lastWindowSizeMsg MsgAll
|
||||
}
|
||||
|
||||
func generateNewSessionID() string {
|
||||
binID := make([]byte, 32)
|
||||
_, err := rand.Read(binID)
|
||||
|
||||
if err != nil {
|
||||
panic(err)
|
||||
}
|
||||
|
||||
return base64.URLEncoding.EncodeToString([]byte(binID))
|
||||
}
|
||||
|
||||
func newTTYShareSession(conn net.Conn, serverURL string) *ttyShareSession {
|
||||
sessionID := generateNewSessionID()
|
||||
|
||||
ttyShareSession := &ttyShareSession{
|
||||
sessionID: sessionID,
|
||||
serverURL: serverURL,
|
||||
ttySenderConnection: NewTTYProtocolConn(conn),
|
||||
ttyReceiverConnections: list.New(),
|
||||
}
|
||||
|
||||
return ttyShareSession
|
||||
}
|
||||
|
||||
func (session *ttyShareSession) InitSender() error {
|
||||
_, err := session.ttySenderConnection.InitServer(ServerSessionInfo{
|
||||
URLWebReadWrite: session.serverURL + "/s/" + session.GetID(),
|
||||
})
|
||||
return err
|
||||
}
|
||||
|
||||
func (session *ttyShareSession) GetID() string {
|
||||
return session.sessionID
|
||||
}
|
||||
|
||||
func copyList(l *list.List) *list.List {
|
||||
newList := list.New()
|
||||
for e := l.Front(); e != nil; e = e.Next() {
|
||||
newList.PushBack(e.Value)
|
||||
}
|
||||
return newList
|
||||
}
|
||||
|
||||
func (session *ttyShareSession) handleSenderMessageLock(msg MsgAll) {
|
||||
switch msg.Type {
|
||||
case MsgIDWinSize:
|
||||
// Save the last known size of the window so we pass it to new receivers, and then
|
||||
// fallthrough. We save the WinSize message as we get it, since we send it anyways
|
||||
// to the receivers, packed into the same protocol
|
||||
session.mainRWLock.Lock()
|
||||
session.lastWindowSizeMsg = msg
|
||||
session.mainRWLock.Unlock()
|
||||
fallthrough
|
||||
case MsgIDWrite:
|
||||
data, _ := json.Marshal(msg)
|
||||
session.forEachReceiverLock(func(rcvConn *TTYProtocolConn) bool {
|
||||
rcvConn.WriteRawData(data)
|
||||
return true
|
||||
})
|
||||
}
|
||||
}
|
||||
|
||||
// Will run on the ttySendeConnection go routine (e.g.: in the TCP connection routine)
|
||||
func (session *ttyShareSession) HandleSenderConnection() {
|
||||
session.mainRWLock.Lock()
|
||||
session.isAlive = true
|
||||
senderConnection := session.ttySenderConnection
|
||||
session.mainRWLock.Unlock()
|
||||
|
||||
for {
|
||||
msg, err := senderConnection.ReadMessage()
|
||||
if err != nil {
|
||||
log.Debugf("TTYSender connnection finished withs with error: %s", err.Error())
|
||||
break
|
||||
}
|
||||
session.handleSenderMessageLock(msg)
|
||||
}
|
||||
|
||||
// Close the connection to all the receivers
|
||||
log.Debugf("Closing all receiver connection")
|
||||
session.forEachReceiverLock(func(recvConn *TTYProtocolConn) bool {
|
||||
log.Debugf("Closing receiver connection")
|
||||
recvConn.Close()
|
||||
return true
|
||||
})
|
||||
|
||||
// TODO: clear here the list of receiver
|
||||
session.mainRWLock.Lock()
|
||||
session.isAlive = false
|
||||
session.mainRWLock.Unlock()
|
||||
}
|
||||
|
||||
// Runs the callback cb for each of the receivers in the list of the receivers, as it was when
|
||||
// this function was called. Note that there might be receivers which might have lost
|
||||
// the connection since this function was called.
|
||||
// Return false in the callback to not continue for the rest of the receivers
|
||||
func (session *ttyShareSession) forEachReceiverLock(cb func(rcvConn *TTYProtocolConn) bool) {
|
||||
session.mainRWLock.RLock()
|
||||
// TODO: Maybe find a better way?
|
||||
rcvsCopy := copyList(session.ttyReceiverConnections)
|
||||
session.mainRWLock.RUnlock()
|
||||
|
||||
for receiverE := rcvsCopy.Front(); receiverE != nil; receiverE = receiverE.Next() {
|
||||
receiver := receiverE.Value.(*TTYProtocolConn)
|
||||
if !cb(receiver) {
|
||||
break
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Will run on the TTYReceiver connection go routine (e.g.: on the websockets connection routine)
|
||||
// When HandleReceiver will exit, the connection to the TTYReceiver will be closed
|
||||
func (session *ttyShareSession) HandleReceiver(rawConn *WSConnection) {
|
||||
rcvProtoConn := NewTTYProtocolConn(rawConn)
|
||||
|
||||
session.mainRWLock.Lock()
|
||||
if !session.isAlive {
|
||||
log.Warnf("TTYReceiver tried to connect to a session that is not alive anymore. Rejecting it..")
|
||||
session.mainRWLock.Unlock()
|
||||
return
|
||||
}
|
||||
|
||||
// Add the receiver to the list of receivers in the seesion, so we need to write-lock
|
||||
rcvHandleEl := session.ttyReceiverConnections.PushBack(rcvProtoConn)
|
||||
senderConn := session.ttySenderConnection
|
||||
lastWindowSize, _ := json.Marshal(session.lastWindowSizeMsg)
|
||||
session.mainRWLock.Unlock()
|
||||
|
||||
log.Debugf("Got new TTYReceiver connection (%s). Serving it..", rawConn.Address())
|
||||
|
||||
// Sending the initial size of the window, if we have one
|
||||
rcvProtoConn.WriteRawData(lastWindowSize)
|
||||
|
||||
// Notify the tty-share that we got a new receiver connected
|
||||
msgRcvConnected, err := MarshalMsg(MsgTTYSenderNewReceiverConnected{
|
||||
Name: rawConn.Address(),
|
||||
})
|
||||
senderConn.WriteRawData(msgRcvConnected)
|
||||
|
||||
if err != nil {
|
||||
log.Errorf("Cannot notify tty sender. Error: %s", err.Error())
|
||||
}
|
||||
|
||||
// Wait until the TTYReceiver will close the connection on its end
|
||||
for {
|
||||
msg, err := rcvProtoConn.ReadMessage()
|
||||
|
||||
if err != nil {
|
||||
log.Warnf("Finishing handling the TTYReceiver loop because: %s", err.Error())
|
||||
break
|
||||
}
|
||||
|
||||
switch msg.Type {
|
||||
case MsgIDWinSize:
|
||||
// Ignore these messages from the receiver. For now, the policy is that the sender
|
||||
// decides on the window size.
|
||||
case MsgIDWrite:
|
||||
rawData, _ := json.Marshal(msg)
|
||||
senderConn.WriteRawData(rawData)
|
||||
default:
|
||||
log.Warnf("Receiving unknown data from the receiver")
|
||||
}
|
||||
}
|
||||
|
||||
log.Debugf("Closing receiver connection")
|
||||
rcvProtoConn.Close()
|
||||
|
||||
// Remove the recevier from the list of the receiver of this session, so we need to write-lock
|
||||
session.mainRWLock.Lock()
|
||||
session.ttyReceiverConnections.Remove(rcvHandleEl)
|
||||
session.mainRWLock.Unlock()
|
||||
}
|
@ -0,0 +1,118 @@
|
||||
package main
|
||||
|
||||
import (
|
||||
"encoding/json"
|
||||
"io"
|
||||
)
|
||||
|
||||
type ServerSessionInfo struct {
|
||||
URLWebReadWrite string
|
||||
}
|
||||
|
||||
type ReceiverSessionInfo struct {
|
||||
}
|
||||
|
||||
type SenderSessionInfo struct {
|
||||
Salt string
|
||||
PasswordVerifierA string
|
||||
}
|
||||
|
||||
// TTYProtocolConn is the interface used to communicate with the sending (master) side of the TTY session
|
||||
type TTYProtocolConn struct {
|
||||
netConnection io.ReadWriteCloser
|
||||
jsonDecoder *json.Decoder
|
||||
}
|
||||
|
||||
func NewTTYProtocolConn(conn io.ReadWriteCloser) *TTYProtocolConn {
|
||||
return &TTYProtocolConn{
|
||||
netConnection: conn,
|
||||
jsonDecoder: json.NewDecoder(conn),
|
||||
}
|
||||
}
|
||||
|
||||
func (protoConn *TTYProtocolConn) ReadMessage() (msg MsgAll, err error) {
|
||||
// TODO: perhaps read here the error, and transform it to something that's understandable
|
||||
// from the outside in the context of this object
|
||||
err = protoConn.jsonDecoder.Decode(&msg)
|
||||
return
|
||||
}
|
||||
|
||||
func (protoConn *TTYProtocolConn) SetWinSize(cols, rows int) error {
|
||||
msgWinChanged := MsgTTYWinSize{
|
||||
Cols: cols,
|
||||
Rows: rows,
|
||||
}
|
||||
return MarshalAndWriteMsg(protoConn.netConnection, msgWinChanged)
|
||||
}
|
||||
|
||||
func (protoConn *TTYProtocolConn) Close() error {
|
||||
return protoConn.netConnection.Close()
|
||||
}
|
||||
|
||||
// Function to send data from one the sender to the server and the other way around.
|
||||
func (protoConn *TTYProtocolConn) Write(buff []byte) (int, error) {
|
||||
msgWrite := MsgTTYWrite{
|
||||
Data: buff,
|
||||
Size: len(buff),
|
||||
}
|
||||
return len(buff), MarshalAndWriteMsg(protoConn.netConnection, msgWrite)
|
||||
}
|
||||
|
||||
func (protoConn *TTYProtocolConn) WriteRawData(buff []byte) (int, error) {
|
||||
return protoConn.netConnection.Write(buff)
|
||||
}
|
||||
|
||||
// Function to be called on the sender side, and which blocks until the protocol has been
|
||||
// initialised
|
||||
func (protoConn *TTYProtocolConn) InitSender(senderInfo SenderSessionInfo) (serverInfo ServerSessionInfo, err error) {
|
||||
var replyMsg MsgTTYSenderInitReply
|
||||
|
||||
msgInitReq := MsgTTYSenderInitRequest{
|
||||
Salt: senderInfo.Salt,
|
||||
PasswordVerifierA: senderInfo.PasswordVerifierA,
|
||||
}
|
||||
|
||||
// Send the InitRequest message
|
||||
if err = MarshalAndWriteMsg(protoConn.netConnection, msgInitReq); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
// Wait here for the InitReply message
|
||||
if err = ReadAndUnmarshalMsg(protoConn.netConnection, &replyMsg); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
serverInfo = ServerSessionInfo{
|
||||
URLWebReadWrite: replyMsg.ReceiverURLWebReadWrite,
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
func (protoConn *TTYProtocolConn) InitServer(serverInfo ServerSessionInfo) (senderInfo SenderSessionInfo, err error) {
|
||||
var requestMsg MsgTTYSenderInitRequest
|
||||
|
||||
// Wait here and expect a InitRequest message
|
||||
if err = ReadAndUnmarshalMsg(protoConn.netConnection, &requestMsg); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
// Send back a InitReply message
|
||||
if err = MarshalAndWriteMsg(protoConn.netConnection, MsgTTYSenderInitReply{
|
||||
ReceiverURLWebReadWrite: serverInfo.URLWebReadWrite}); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
senderInfo = SenderSessionInfo{
|
||||
Salt: requestMsg.Salt,
|
||||
PasswordVerifierA: requestMsg.PasswordVerifierA,
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
func (protoConn *TTYProtocolConn) InitServerReceiverConn(serverInfo ServerSessionInfo) (receiverInfo ReceiverSessionInfo, err error) {
|
||||
return
|
||||
}
|
||||
|
||||
func (protoConn *TTYProtocolConn) InitReceiverServerConn(receiverInfo ReceiverSessionInfo) (serverInfo ServerSessionInfo, err error) {
|
||||
return
|
||||
}
|
@ -0,0 +1,8 @@
|
||||
# This is the official list of gorilla/mux authors for copyright purposes.
|
||||
#
|
||||
# Please keep the list sorted.
|
||||
|
||||
Google LLC (https://opensource.google.com/)
|
||||
Kamil Kisielk <kamil@kamilkisiel.net>
|
||||
Matt Silverlock <matt@eatsleeprepeat.net>
|
||||
Rodrigo Moraes (https://github.com/moraes)
|
@ -0,0 +1,27 @@
|
||||
Copyright (c) 2012-2018 The Gorilla Authors. All rights reserved.
|
||||
|
||||
Redistribution and use in source and binary forms, with or without
|
||||
modification, are permitted provided that the following conditions are
|
||||
met:
|
||||
|
||||
* Redistributions of source code must retain the above copyright
|
||||
notice, this list of conditions and the following disclaimer.
|
||||
* Redistributions in binary form must reproduce the above
|
||||
copyright notice, this list of conditions and the following disclaimer
|
||||
in the documentation and/or other materials provided with the
|
||||
distribution.
|
||||
* Neither the name of Google Inc. nor the names of its
|
||||
contributors may be used to endorse or promote products derived from
|
||||
this software without specific prior written permission.
|
||||
|
||||
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
||||
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
||||
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||||
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
||||
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||||
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||||
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
||||
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
@ -0,0 +1,718 @@
|
||||
# gorilla/mux
|
||||
|
||||
[![GoDoc](https://godoc.org/github.com/gorilla/mux?status.svg)](https://godoc.org/github.com/gorilla/mux)
|
||||
[![Build Status](https://travis-ci.org/gorilla/mux.svg?branch=master)](https://travis-ci.org/gorilla/mux)
|
||||
[![CircleCI](https://circleci.com/gh/gorilla/mux.svg?style=svg)](https://circleci.com/gh/gorilla/mux)
|
||||
[![Sourcegraph](https://sourcegraph.com/github.com/gorilla/mux/-/badge.svg)](https://sourcegraph.com/github.com/gorilla/mux?badge)
|
||||
|
||||
![Gorilla Logo](http://www.gorillatoolkit.org/static/images/gorilla-icon-64.png)
|
||||
|
||||
https://www.gorillatoolkit.org/pkg/mux
|
||||
|
||||
Package `gorilla/mux` implements a request router and dispatcher for matching incoming requests to
|
||||
their respective handler.
|
||||
|
||||
The name mux stands for "HTTP request multiplexer". Like the standard `http.ServeMux`, `mux.Router` matches incoming requests against a list of registered routes and calls a handler for the route that matches the URL or other conditions. The main features are:
|
||||
|
||||
* It implements the `http.Handler` interface so it is compatible with the standard `http.ServeMux`.
|
||||
* Requests can be matched based on URL host, path, path prefix, schemes, header and query values, HTTP methods or using custom matchers.
|
||||
* URL hosts, paths and query values can have variables with an optional regular expression.
|
||||
* Registered URLs can be built, or "reversed", which helps maintaining references to resources.
|
||||
* Routes can be used as subrouters: nested routes are only tested if the parent route matches. This is useful to define groups of routes that share common conditions like a host, a path prefix or other repeated attributes. As a bonus, this optimizes request matching.
|
||||
|
||||
---
|
||||
|
||||
* [Install](#install)
|
||||
* [Examples](#examples)
|
||||
* [Matching Routes](#matching-routes)
|
||||
* [Static Files](#static-files)
|
||||
* [Registered URLs](#registered-urls)
|
||||
* [Walking Routes](#walking-routes)
|
||||
* [Graceful Shutdown](#graceful-shutdown)
|
||||
* [Middleware](#middleware)
|
||||
* [Handling CORS Requests](#handling-cors-requests)
|
||||
* [Testing Handlers](#testing-handlers)
|
||||
* [Full Example](#full-example)
|
||||
|
||||
---
|
||||
|
||||
## Install
|
||||
|
||||
With a [correctly configured](https://golang.org/doc/install#testing) Go toolchain:
|
||||
|
||||
```sh
|
||||
go get -u github.com/gorilla/mux
|
||||
```
|
||||
|
||||
## Examples
|
||||
|
||||
Let's start registering a couple of URL paths and handlers:
|
||||
|
||||
```go
|
||||
func main() {
|
||||
r := mux.NewRouter()
|
||||
r.HandleFunc("/", HomeHandler)
|
||||
r.HandleFunc("/products", ProductsHandler)
|
||||
r.HandleFunc("/articles", ArticlesHandler)
|
||||
http.Handle("/", r)
|
||||
}
|
||||
```
|
||||
|
||||
Here we register three routes mapping URL paths to handlers. This is equivalent to how `http.HandleFunc()` works: if an incoming request URL matches one of the paths, the corresponding handler is called passing (`http.ResponseWriter`, `*http.Request`) as parameters.
|
||||
|
||||
Paths can have variables. They are defined using the format `{name}` or `{name:pattern}`. If a regular expression pattern is not defined, the matched variable will be anything until the next slash. For example:
|
||||
|
||||
```go
|
||||
r := mux.NewRouter()
|
||||
r.HandleFunc("/products/{key}", ProductHandler)
|
||||
r.HandleFunc("/articles/{category}/", ArticlesCategoryHandler)
|
||||
r.HandleFunc("/articles/{category}/{id:[0-9]+}", ArticleHandler)
|
||||
```
|
||||
|
||||
The names are used to create a map of route variables which can be retrieved calling `mux.Vars()`:
|
||||
|
||||
```go
|
||||
func ArticlesCategoryHandler(w http.ResponseWriter, r *http.Request) {
|
||||
vars := mux.Vars(r)
|
||||
w.WriteHeader(http.StatusOK)
|
||||
fmt.Fprintf(w, "Category: %v\n", vars["category"])
|
||||
}
|
||||
```
|
||||
|
||||
And this is all you need to know about the basic usage. More advanced options are explained below.
|
||||
|
||||
### Matching Routes
|
||||
|
||||
Routes can also be restricted to a domain or subdomain. Just define a host pattern to be matched. They can also have variables:
|
||||
|
||||
```go
|
||||
r := mux.NewRouter()
|
||||
// Only matches if domain is "www.example.com".
|
||||
r.Host("www.example.com")
|
||||
// Matches a dynamic subdomain.
|
||||
r.Host("{subdomain:[a-z]+}.example.com")
|
||||
```
|
||||
|
||||
There are several other matchers that can be added. To match path prefixes:
|
||||
|
||||
```go
|
||||
r.PathPrefix("/products/")
|
||||
```
|
||||
|
||||
...or HTTP methods:
|
||||
|
||||
```go
|
||||
r.Methods("GET", "POST")
|
||||
```
|
||||
|
||||
...or URL schemes:
|
||||
|
||||
```go
|
||||
r.Schemes("https")
|
||||
```
|
||||
|
||||
...or header values:
|
||||
|
||||
```go
|
||||
r.Headers("X-Requested-With", "XMLHttpRequest")
|
||||
```
|
||||
|
||||
...or query values:
|
||||
|
||||
```go
|
||||
r.Queries("key", "value")
|
||||
```
|
||||
|
||||
...or to use a custom matcher function:
|
||||
|
||||
```go
|
||||
r.MatcherFunc(func(r *http.Request, rm *RouteMatch) bool {
|
||||
return r.ProtoMajor == 0
|
||||
})
|
||||
```
|
||||
|
||||
...and finally, it is possible to combine several matchers in a single route:
|
||||
|
||||
```go
|
||||
r.HandleFunc("/products", ProductsHandler).
|
||||
Host("www.example.com").
|
||||
Methods("GET").
|
||||
Schemes("http")
|
||||
```
|
||||
|
||||
Routes are tested in the order they were added to the router. If two routes match, the first one wins:
|
||||
|
||||
```go
|
||||
r := mux.NewRouter()
|
||||
r.HandleFunc("/specific", specificHandler)
|
||||
r.PathPrefix("/").Handler(catchAllHandler)
|
||||
```
|
||||
|
||||
Setting the same matching conditions again and again can be boring, so we have a way to group several routes that share the same requirements. We call it "subrouting".
|
||||
|
||||
For example, let's say we have several URLs that should only match when the host is `www.example.com`. Create a route for that host and get a "subrouter" from it:
|
||||
|
||||
```go
|
||||
r := mux.NewRouter()
|
||||
s := r.Host("www.example.com").Subrouter()
|
||||
```
|
||||
|
||||
Then register routes in the subrouter:
|
||||
|
||||
```go
|
||||
s.HandleFunc("/products/", ProductsHandler)
|
||||
s.HandleFunc("/products/{key}", ProductHandler)
|
||||
s.HandleFunc("/articles/{category}/{id:[0-9]+}", ArticleHandler)
|
||||
```
|
||||
|
||||
The three URL paths we registered above will only be tested if the domain is `www.example.com`, because the subrouter is tested first. This is not only convenient, but also optimizes request matching. You can create subrouters combining any attribute matchers accepted by a route.
|
||||
|
||||
Subrouters can be used to create domain or path "namespaces": you define subrouters in a central place and then parts of the app can register its paths relatively to a given subrouter.
|
||||
|
||||
There's one more thing about subroutes. When a subrouter has a path prefix, the inner routes use it as base for their paths:
|
||||
|
||||
```go
|
||||
r := mux.NewRouter()
|
||||
s := r.PathPrefix("/products").Subrouter()
|
||||
// "/products/"
|
||||
s.HandleFunc("/", ProductsHandler)
|
||||
// "/products/{key}/"
|
||||
s.HandleFunc("/{key}/", ProductHandler)
|
||||
// "/products/{key}/details"
|
||||
s.HandleFunc("/{key}/details", ProductDetailsHandler)
|
||||
```
|
||||
|
||||
|
||||
### Static Files
|
||||
|
||||
Note that the path provided to `PathPrefix()` represents a "wildcard": calling
|
||||
`PathPrefix("/static/").Handler(...)` means that the handler will be passed any
|
||||
request that matches "/static/\*". This makes it easy to serve static files with mux:
|
||||
|
||||
```go
|
||||
func main() {
|
||||
var dir string
|
||||
|
||||
flag.StringVar(&dir, "dir", ".", "the directory to serve files from. Defaults to the current dir")
|
||||
flag.Parse()
|
||||
r := mux.NewRouter()
|
||||
|
||||
// This will serve files under http://localhost:8000/static/<filename>
|
||||
r.PathPrefix("/static/").Handler(http.StripPrefix("/static/", http.FileServer(http.Dir(dir))))
|
||||
|
||||
srv := &http.Server{
|
||||
Handler: r,
|
||||
Addr: "127.0.0.1:8000",
|
||||
// Good practice: enforce timeouts for servers you create!
|
||||
WriteTimeout: 15 * time.Second,
|
||||
ReadTimeout: 15 * time.Second,
|
||||
}
|
||||
|
||||
log.Fatal(srv.ListenAndServe())
|
||||
}
|
||||
```
|
||||
|
||||
### Registered URLs
|
||||
|
||||
Now let's see how to build registered URLs.
|
||||
|
||||
Routes can be named. All routes that define a name can have their URLs built, or "reversed". We define a name calling `Name()` on a route. For example:
|
||||
|
||||
```go
|
||||
r := mux.NewRouter()
|
||||
r.HandleFunc("/articles/{category}/{id:[0-9]+}", ArticleHandler).
|
||||
Name("article")
|
||||
```
|
||||
|
||||
To build a URL, get the route and call the `URL()` method, passing a sequence of key/value pairs for the route variables. For the previous route, we would do:
|
||||
|
||||
```go
|
||||
url, err := r.Get("article").URL("category", "technology", "id", "42")
|
||||
```
|
||||
|
||||
...and the result will be a `url.URL` with the following path:
|
||||
|
||||
```
|
||||
"/articles/technology/42"
|
||||
```
|
||||
|
||||
This also works for host and query value variables:
|
||||
|
||||
```go
|
||||
r := mux.NewRouter()
|
||||
r.Host("{subdomain}.example.com").
|
||||
Path("/articles/{category}/{id:[0-9]+}").
|
||||
Queries("filter", "{filter}").
|
||||
HandlerFunc(ArticleHandler).
|
||||
Name("article")
|
||||
|
||||
// url.String() will be "http://news.example.com/articles/technology/42?filter=gorilla"
|
||||
url, err := r.Get("article").URL("subdomain", "news",
|
||||
"category", "technology",
|
||||
"id", "42",
|
||||
"filter", "gorilla")
|
||||
```
|
||||
|
||||
All variables defined in the route are required, and their values must conform to the corresponding patterns. These requirements guarantee that a generated URL will always match a registered route -- the only exception is for explicitly defined "build-only" routes which never match.
|
||||
|
||||
Regex support also exists for matching Headers within a route. For example, we could do:
|
||||
|
||||
```go
|
||||
r.HeadersRegexp("Content-Type", "application/(text|json)")
|
||||
```
|
||||
|
||||
...and the route will match both requests with a Content-Type of `application/json` as well as `application/text`
|
||||
|
||||
There's also a way to build only the URL host or path for a route: use the methods `URLHost()` or `URLPath()` instead. For the previous route, we would do:
|
||||
|
||||
```go
|
||||
// "http://news.example.com/"
|
||||
host, err := r.Get("article").URLHost("subdomain", "news")
|
||||
|
||||
// "/articles/technology/42"
|
||||
path, err := r.Get("article").URLPath("category", "technology", "id", "42")
|
||||
```
|
||||
|
||||
And if you use subrouters, host and path defined separately can be built as well:
|
||||
|
||||
```go
|
||||
r := mux.NewRouter()
|
||||
s := r.Host("{subdomain}.example.com").Subrouter()
|
||||
s.Path("/articles/{category}/{id:[0-9]+}").
|
||||
HandlerFunc(ArticleHandler).
|
||||
Name("article")
|
||||
|
||||
// "http://news.example.com/articles/technology/42"
|
||||
url, err := r.Get("article").URL("subdomain", "news",
|
||||
"category", "technology",
|
||||
"id", "42")
|
||||
```
|
||||
|
||||
### Walking Routes
|
||||
|
||||
The `Walk` function on `mux.Router` can be used to visit all of the routes that are registered on a router. For example,
|
||||
the following prints all of the registered routes:
|
||||
|
||||
```go
|
||||
package main
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"net/http"
|
||||
"strings"
|
||||
|
||||
"github.com/gorilla/mux"
|
||||
)
|
||||
|
||||
func handler(w http.ResponseWriter, r *http.Request) {
|
||||
return
|
||||
}
|
||||
|
||||
func main() {
|
||||
r := mux.NewRouter()
|
||||
r.HandleFunc("/", handler)
|
||||
r.HandleFunc("/products", handler).Methods("POST")
|
||||
r.HandleFunc("/articles", handler).Methods("GET")
|
||||
r.HandleFunc("/articles/{id}", handler).Methods("GET", "PUT")
|
||||
r.HandleFunc("/authors", handler).Queries("surname", "{surname}")
|
||||
err := r.Walk(func(route *mux.Route, router *mux.Router, ancestors []*mux.Route) error {
|
||||
pathTemplate, err := route.GetPathTemplate()
|
||||
if err == nil {
|
||||
fmt.Println("ROUTE:", pathTemplate)
|
||||
}
|
||||
pathRegexp, err := route.GetPathRegexp()
|
||||
if err == nil {
|
||||
fmt.Println("Path regexp:", pathRegexp)
|
||||
}
|
||||
queriesTemplates, err := route.GetQueriesTemplates()
|
||||
if err == nil {
|
||||
fmt.Println("Queries templates:", strings.Join(queriesTemplates, ","))
|
||||
}
|
||||
queriesRegexps, err := route.GetQueriesRegexp()
|
||||
if err == nil {
|
||||
fmt.Println("Queries regexps:", strings.Join(queriesRegexps, ","))
|
||||
}
|
||||
methods, err := route.GetMethods()
|
||||
if err == nil {
|
||||
fmt.Println("Methods:", strings.Join(methods, ","))
|
||||
}
|
||||
fmt.Println()
|
||||
return nil
|
||||
})
|
||||
|
||||
if err != nil {
|
||||
fmt.Println(err)
|
||||
}
|
||||
|
||||
http.Handle("/", r)
|
||||
}
|
||||
```
|
||||
|
||||
### Graceful Shutdown
|
||||
|
||||
Go 1.8 introduced the ability to [gracefully shutdown](https://golang.org/doc/go1.8#http_shutdown) a `*http.Server`. Here's how to do that alongside `mux`:
|
||||
|
||||
```go
|
||||
package main
|
||||
|
||||
import (
|
||||
"context"
|
||||
"flag"
|
||||
"log"
|
||||
"net/http"
|
||||
"os"
|
||||
"os/signal"
|
||||
"time"
|
||||
|
||||
"github.com/gorilla/mux"
|
||||
)
|
||||
|
||||
func main() {
|
||||
var wait time.Duration
|
||||
flag.DurationVar(&wait, "graceful-timeout", time.Second * 15, "the duration for which the server gracefully wait for existing connections to finish - e.g. 15s or 1m")
|
||||
flag.Parse()
|
||||
|
||||
r := mux.NewRouter()
|
||||
// Add your routes as needed
|
||||
|
||||
srv := &http.Server{
|
||||
Addr: "0.0.0.0:8080",
|
||||
// Good practice to set timeouts to avoid Slowloris attacks.
|
||||
WriteTimeout: time.Second * 15,
|
||||
ReadTimeout: time.Second * 15,
|
||||
IdleTimeout: time.Second * 60,
|
||||
Handler: r, // Pass our instance of gorilla/mux in.
|
||||
}
|
||||
|
||||
// Run our server in a goroutine so that it doesn't block.
|
||||
go func() {
|
||||
if err := srv.ListenAndServe(); err != nil {
|
||||
log.Println(err)
|
||||
}
|
||||
}()
|
||||
|
||||
c := make(chan os.Signal, 1)
|
||||
// We'll accept graceful shutdowns when quit via SIGINT (Ctrl+C)
|
||||
// SIGKILL, SIGQUIT or SIGTERM (Ctrl+/) will not be caught.
|
||||
signal.Notify(c, os.Interrupt)
|
||||
|
||||
// Block until we receive our signal.
|
||||
<-c
|
||||
|
||||
// Create a deadline to wait for.
|
||||
ctx, cancel := context.WithTimeout(context.Background(), wait)
|
||||
defer cancel()
|
||||
// Doesn't block if no connections, but will otherwise wait
|
||||
// until the timeout deadline.
|
||||
srv.Shutdown(ctx)
|
||||
// Optionally, you could run srv.Shutdown in a goroutine and block on
|
||||
// <-ctx.Done() if your application should wait for other services
|
||||
// to finalize based on context cancellation.
|
||||
log.Println("shutting down")
|
||||
os.Exit(0)
|
||||
}
|
||||
```
|
||||
|
||||
### Middleware
|
||||
|
||||
Mux supports the addition of middlewares to a [Router](https://godoc.org/github.com/gorilla/mux#Router), which are executed in the order they are added if a match is found, including its subrouters.
|
||||
Middlewares are (typically) small pieces of code which take one request, do something with it, and pass it down to another middleware or the final handler. Some common use cases for middleware are request logging, header manipulation, or `ResponseWriter` hijacking.
|
||||
|
||||
Mux middlewares are defined using the de facto standard type:
|
||||
|
||||
```go
|
||||
type MiddlewareFunc func(http.Handler) http.Handler
|
||||
```
|
||||
|
||||
Typically, the returned handler is a closure which does something with the http.ResponseWriter and http.Request passed to it, and then calls the handler passed as parameter to the MiddlewareFunc. This takes advantage of closures being able access variables from the context where they are created, while retaining the signature enforced by the receivers.
|
||||
|
||||
A very basic middleware which logs the URI of the request being handled could be written as:
|
||||
|
||||
```go
|
||||
func loggingMiddleware(next http.Handler) http.Handler {
|
||||
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
|
||||
// Do stuff here
|
||||
log.Println(r.RequestURI)
|
||||
// Call the next handler, which can be another middleware in the chain, or the final handler.
|
||||
next.ServeHTTP(w, r)
|
||||
})
|
||||
}
|
||||
```
|
||||
|
||||
Middlewares can be added to a router using `Router.Use()`:
|
||||
|
||||
```go
|
||||
r := mux.NewRouter()
|
||||
r.HandleFunc("/", handler)
|
||||
r.Use(loggingMiddleware)
|
||||
```
|
||||
|
||||
A more complex authentication middleware, which maps session token to users, could be written as:
|
||||
|
||||
```go
|
||||
// Define our struct
|
||||
type authenticationMiddleware struct {
|
||||
tokenUsers map[string]string
|
||||
}
|
||||
|
||||
// Initialize it somewhere
|
||||
func (amw *authenticationMiddleware) Populate() {
|
||||
amw.tokenUsers["00000000"] = "user0"
|
||||
amw.tokenUsers["aaaaaaaa"] = "userA"
|
||||
amw.tokenUsers["05f717e5"] = "randomUser"
|
||||
amw.tokenUsers["deadbeef"] = "user0"
|
||||
}
|
||||
|
||||
// Middleware function, which will be called for each request
|
||||
func (amw *authenticationMiddleware) Middleware(next http.Handler) http.Handler {
|
||||
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
|
||||
token := r.Header.Get("X-Session-Token")
|
||||
|
||||
if user, found := amw.tokenUsers[token]; found {
|
||||
// We found the token in our map
|
||||
log.Printf("Authenticated user %s\n", user)
|
||||
// Pass down the request to the next middleware (or final handler)
|
||||
next.ServeHTTP(w, r)
|
||||
} else {
|
||||
// Write an error and stop the handler chain
|
||||
http.Error(w, "Forbidden", http.StatusForbidden)
|
||||
}
|
||||
})
|
||||
}
|
||||
```
|
||||
|
||||
```go
|
||||
r := mux.NewRouter()
|
||||
r.HandleFunc("/", handler)
|
||||
|
||||
amw := authenticationMiddleware{}
|
||||
amw.Populate()
|
||||
|
||||
r.Use(amw.Middleware)
|
||||
```
|
||||
|
||||
Note: The handler chain will be stopped if your middleware doesn't call `next.ServeHTTP()` with the corresponding parameters. This can be used to abort a request if the middleware writer wants to. Middlewares _should_ write to `ResponseWriter` if they _are_ going to terminate the request, and they _should not_ write to `ResponseWriter` if they _are not_ going to terminate it.
|
||||
|
||||
### Handling CORS Requests
|
||||
|
||||
[CORSMethodMiddleware](https://godoc.org/github.com/gorilla/mux#CORSMethodMiddleware) intends to make it easier to strictly set the `Access-Control-Allow-Methods` response header.
|
||||
|
||||
* You will still need to use your own CORS handler to set the other CORS headers such as `Access-Control-Allow-Origin`
|
||||
* The middleware will set the `Access-Control-Allow-Methods` header to all the method matchers (e.g. `r.Methods(http.MethodGet, http.MethodPut, http.MethodOptions)` -> `Access-Control-Allow-Methods: GET,PUT,OPTIONS`) on a route
|
||||
* If you do not specify any methods, then:
|
||||
> _Important_: there must be an `OPTIONS` method matcher for the middleware to set the headers.
|
||||
|
||||
Here is an example of using `CORSMethodMiddleware` along with a custom `OPTIONS` handler to set all the required CORS headers:
|
||||
|
||||
```go
|
||||
package main
|
||||
|
||||
import (
|
||||
"net/http"
|
||||
"github.com/gorilla/mux"
|
||||
)
|
||||
|
||||
func main() {
|
||||
r := mux.NewRouter()
|
||||
|
||||
// IMPORTANT: you must specify an OPTIONS method matcher for the middleware to set CORS headers
|
||||
r.HandleFunc("/foo", fooHandler).Methods(http.MethodGet, http.MethodPut, http.MethodPatch, http.MethodOptions)
|
||||
r.Use(mux.CORSMethodMiddleware(r))
|
||||
|
||||
http.ListenAndServe(":8080", r)
|
||||
}
|
||||
|
||||
func fooHandler(w http.ResponseWriter, r *http.Request) {
|
||||
w.Header().Set("Access-Control-Allow-Origin", "*")
|
||||
if r.Method == http.MethodOptions {
|
||||
return
|
||||
}
|
||||
|
||||
w.Write([]byte("foo"))
|
||||
}
|
||||
```
|
||||
|
||||
And an request to `/foo` using something like:
|
||||
|
||||
```bash
|
||||
curl localhost:8080/foo -v
|
||||
```
|
||||
|
||||
Would look like:
|
||||
|
||||
```bash
|
||||
* Trying ::1...
|
||||
* TCP_NODELAY set
|
||||
* Connected to localhost (::1) port 8080 (#0)
|
||||
> GET /foo HTTP/1.1
|
||||
> Host: localhost:8080
|
||||
> User-Agent: curl/7.59.0
|
||||
> Accept: */*
|
||||
>
|
||||
< HTTP/1.1 200 OK
|
||||
< Access-Control-Allow-Methods: GET,PUT,PATCH,OPTIONS
|
||||
< Access-Control-Allow-Origin: *
|
||||
< Date: Fri, 28 Jun 2019 20:13:30 GMT
|
||||
< Content-Length: 3
|
||||
< Content-Type: text/plain; charset=utf-8
|
||||
<
|
||||
* Connection #0 to host localhost left intact
|
||||
foo
|
||||
```
|
||||
|
||||
### Testing Handlers
|
||||
|
||||
Testing handlers in a Go web application is straightforward, and _mux_ doesn't complicate this any further. Given two files: `endpoints.go` and `endpoints_test.go`, here's how we'd test an application using _mux_.
|
||||
|
||||
First, our simple HTTP handler:
|
||||
|
||||
```go
|
||||
// endpoints.go
|
||||
package main
|
||||
|
||||
func HealthCheckHandler(w http.ResponseWriter, r *http.Request) {
|
||||
// A very simple health check.
|
||||
w.Header().Set("Content-Type", "application/json")
|
||||
w.WriteHeader(http.StatusOK)
|
||||
|
||||
// In the future we could report back on the status of our DB, or our cache
|
||||
// (e.g. Redis) by performing a simple PING, and include them in the response.
|
||||
io.WriteString(w, `{"alive": true}`)
|
||||
}
|
||||
|
||||
func main() {
|
||||
r := mux.NewRouter()
|
||||
r.HandleFunc("/health", HealthCheckHandler)
|
||||
|
||||
log.Fatal(http.ListenAndServe("localhost:8080", r))
|
||||
}
|
||||
```
|
||||
|
||||
Our test code:
|
||||
|
||||
```go
|
||||
// endpoints_test.go
|
||||
package main
|
||||
|
||||
import (
|
||||
"net/http"
|
||||
"net/http/httptest"
|
||||
"testing"
|
||||
)
|
||||
|
||||
func TestHealthCheckHandler(t *testing.T) {
|
||||
// Create a request to pass to our handler. We don't have any query parameters for now, so we'll
|
||||
// pass 'nil' as the third parameter.
|
||||
req, err := http.NewRequest("GET", "/health", nil)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
// We create a ResponseRecorder (which satisfies http.ResponseWriter) to record the response.
|
||||
rr := httptest.NewRecorder()
|
||||
handler := http.HandlerFunc(HealthCheckHandler)
|
||||
|
||||
// Our handlers satisfy http.Handler, so we can call their ServeHTTP method
|
||||
// directly and pass in our Request and ResponseRecorder.
|
||||
handler.ServeHTTP(rr, req)
|
||||
|
||||
// Check the status code is what we expect.
|
||||
if status := rr.Code; status != http.StatusOK {
|
||||
t.Errorf("handler returned wrong status code: got %v want %v",
|
||||
status, http.StatusOK)
|
||||
}
|
||||
|
||||
// Check the response body is what we expect.
|
||||
expected := `{"alive": true}`
|
||||
if rr.Body.String() != expected {
|
||||
t.Errorf("handler returned unexpected body: got %v want %v",
|
||||
rr.Body.String(), expected)
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
In the case that our routes have [variables](#examples), we can pass those in the request. We could write
|
||||
[table-driven tests](https://dave.cheney.net/2013/06/09/writing-table-driven-tests-in-go) to test multiple
|
||||
possible route variables as needed.
|
||||
|
||||
```go
|
||||
// endpoints.go
|
||||
func main() {
|
||||
r := mux.NewRouter()
|
||||
// A route with a route variable:
|
||||
r.HandleFunc("/metrics/{type}", MetricsHandler)
|
||||
|
||||
log.Fatal(http.ListenAndServe("localhost:8080", r))
|
||||
}
|
||||
```
|
||||
|
||||
Our test file, with a table-driven test of `routeVariables`:
|
||||
|
||||
```go
|
||||
// endpoints_test.go
|
||||
func TestMetricsHandler(t *testing.T) {
|
||||
tt := []struct{
|
||||
routeVariable string
|
||||
shouldPass bool
|
||||
}{
|
||||
{"goroutines", true},
|
||||
{"heap", true},
|
||||
{"counters", true},
|
||||
{"queries", true},
|
||||
{"adhadaeqm3k", false},
|
||||
}
|
||||
|
||||
for _, tc := range tt {
|
||||
path := fmt.Sprintf("/metrics/%s", tc.routeVariable)
|
||||
req, err := http.NewRequest("GET", path, nil)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
rr := httptest.NewRecorder()
|
||||
|
||||
// Need to create a router that we can pass the request through so that the vars will be added to the context
|
||||
router := mux.NewRouter()
|
||||
router.HandleFunc("/metrics/{type}", MetricsHandler)
|
||||
router.ServeHTTP(rr, req)
|
||||
|
||||
// In this case, our MetricsHandler returns a non-200 response
|
||||
// for a route variable it doesn't know about.
|
||||
if rr.Code == http.StatusOK && !tc.shouldPass {
|
||||
t.Errorf("handler should have failed on routeVariable %s: got %v want %v",
|
||||
tc.routeVariable, rr.Code, http.StatusOK)
|
||||
}
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
## Full Example
|
||||
|
||||
Here's a complete, runnable example of a small `mux` based server:
|
||||
|
||||
```go
|
||||
package main
|
||||
|
||||
import (
|
||||
"net/http"
|
||||
"log"
|
||||
"github.com/gorilla/mux"
|
||||
)
|
||||
|
||||
func YourHandler(w http.ResponseWriter, r *http.Request) {
|
||||
w.Write([]byte("Gorilla!\n"))
|
||||
}
|
||||
|
||||
func main() {
|
||||
r := mux.NewRouter()
|
||||
// Routes consist of a path and a handler function.
|
||||
r.HandleFunc("/", YourHandler)
|
||||
|
||||
// Bind to a port and pass our router in
|
||||
log.Fatal(http.ListenAndServe(":8000", r))
|
||||
}
|
||||
```
|
||||
|
||||
## License
|
||||
|
||||
BSD licensed. See the LICENSE file for details.
|
@ -0,0 +1,18 @@
|
||||
package mux
|
||||
|
||||
import (
|
||||
"context"
|
||||
"net/http"
|
||||
)
|
||||
|
||||
func contextGet(r *http.Request, key interface{}) interface{} {
|
||||
return r.Context().Value(key)
|
||||
}
|
||||
|
||||
func contextSet(r *http.Request, key, val interface{}) *http.Request {
|
||||
if val == nil {
|
||||
return r
|
||||
}
|
||||
|
||||
return r.WithContext(context.WithValue(r.Context(), key, val))
|
||||
}
|
@ -0,0 +1,306 @@
|
||||
// Copyright 2012 The Gorilla Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
/*
|
||||
Package mux implements a request router and dispatcher.
|
||||
|
||||
The name mux stands for "HTTP request multiplexer". Like the standard
|
||||
http.ServeMux, mux.Router matches incoming requests against a list of
|
||||
registered routes and calls a handler for the route that matches the URL
|
||||
or other conditions. The main features are:
|
||||
|
||||
* Requests can be matched based on URL host, path, path prefix, schemes,
|
||||
header and query values, HTTP methods or using custom matchers.
|
||||
* URL hosts, paths and query values can have variables with an optional
|
||||
regular expression.
|
||||
* Registered URLs can be built, or "reversed", which helps maintaining
|
||||
references to resources.
|
||||
* Routes can be used as subrouters: nested routes are only tested if the
|
||||
parent route matches. This is useful to define groups of routes that
|
||||
share common conditions like a host, a path prefix or other repeated
|
||||
attributes. As a bonus, this optimizes request matching.
|
||||
* It implements the http.Handler interface so it is compatible with the
|
||||
standard http.ServeMux.
|
||||
|
||||
Let's start registering a couple of URL paths and handlers:
|
||||
|
||||
func main() {
|
||||
r := mux.NewRouter()
|
||||
r.HandleFunc("/", HomeHandler)
|
||||
r.HandleFunc("/products", ProductsHandler)
|
||||
r.HandleFunc("/articles", ArticlesHandler)
|
||||
http.Handle("/", r)
|
||||
}
|
||||
|
||||
Here we register three routes mapping URL paths to handlers. This is
|
||||
equivalent to how http.HandleFunc() works: if an incoming request URL matches
|
||||
one of the paths, the corresponding handler is called passing
|
||||
(http.ResponseWriter, *http.Request) as parameters.
|
||||
|
||||
Paths can have variables. They are defined using the format {name} or
|
||||
{name:pattern}. If a regular expression pattern is not defined, the matched
|
||||
variable will be anything until the next slash. For example:
|
||||
|
||||
r := mux.NewRouter()
|
||||
r.HandleFunc("/products/{key}", ProductHandler)
|
||||
r.HandleFunc("/articles/{category}/", ArticlesCategoryHandler)
|
||||
r.HandleFunc("/articles/{category}/{id:[0-9]+}", ArticleHandler)
|
||||
|
||||
Groups can be used inside patterns, as long as they are non-capturing (?:re). For example:
|
||||
|
||||
r.HandleFunc("/articles/{category}/{sort:(?:asc|desc|new)}", ArticlesCategoryHandler)
|
||||
|
||||
The names are used to create a map of route variables which can be retrieved
|
||||
calling mux.Vars():
|
||||
|
||||
vars := mux.Vars(request)
|
||||
category := vars["category"]
|
||||
|
||||
Note that if any capturing groups are present, mux will panic() during parsing. To prevent
|
||||
this, convert any capturing groups to non-capturing, e.g. change "/{sort:(asc|desc)}" to
|
||||
"/{sort:(?:asc|desc)}". This is a change from prior versions which behaved unpredictably
|
||||
when capturing groups were present.
|
||||
|
||||
And this is all you need to know about the basic usage. More advanced options
|
||||
are explained below.
|
||||
|
||||
Routes can also be restricted to a domain or subdomain. Just define a host
|
||||
pattern to be matched. They can also have variables:
|
||||
|
||||
r := mux.NewRouter()
|
||||
// Only matches if domain is "www.example.com".
|
||||
r.Host("www.example.com")
|
||||
// Matches a dynamic subdomain.
|
||||
r.Host("{subdomain:[a-z]+}.domain.com")
|
||||
|
||||
There are several other matchers that can be added. To match path prefixes:
|
||||
|
||||
r.PathPrefix("/products/")
|
||||
|
||||
...or HTTP methods:
|
||||
|
||||
r.Methods("GET", "POST")
|
||||
|
||||
...or URL schemes:
|
||||
|
||||
r.Schemes("https")
|
||||
|
||||
...or header values:
|
||||
|
||||
r.Headers("X-Requested-With", "XMLHttpRequest")
|
||||
|
||||
...or query values:
|
||||
|
||||
r.Queries("key", "value")
|
||||
|
||||
...or to use a custom matcher function:
|
||||
|
||||
r.MatcherFunc(func(r *http.Request, rm *RouteMatch) bool {
|
||||
return r.ProtoMajor == 0
|
||||
})
|
||||
|
||||
...and finally, it is possible to combine several matchers in a single route:
|
||||
|
||||
r.HandleFunc("/products", ProductsHandler).
|
||||
Host("www.example.com").
|
||||
Methods("GET").
|
||||
Schemes("http")
|
||||
|
||||
Setting the same matching conditions again and again can be boring, so we have
|
||||
a way to group several routes that share the same requirements.
|
||||
We call it "subrouting".
|
||||
|
||||
For example, let's say we have several URLs that should only match when the
|
||||
host is "www.example.com". Create a route for that host and get a "subrouter"
|
||||
from it:
|
||||
|
||||
r := mux.NewRouter()
|
||||
s := r.Host("www.example.com").Subrouter()
|
||||
|
||||
Then register routes in the subrouter:
|
||||
|
||||
s.HandleFunc("/products/", ProductsHandler)
|
||||
s.HandleFunc("/products/{key}", ProductHandler)
|
||||
s.HandleFunc("/articles/{category}/{id:[0-9]+}"), ArticleHandler)
|
||||
|
||||
The three URL paths we registered above will only be tested if the domain is
|
||||
"www.example.com", because the subrouter is tested first. This is not
|
||||
only convenient, but also optimizes request matching. You can create
|
||||
subrouters combining any attribute matchers accepted by a route.
|
||||
|
||||
Subrouters can be used to create domain or path "namespaces": you define
|
||||
subrouters in a central place and then parts of the app can register its
|
||||
paths relatively to a given subrouter.
|
||||
|
||||
There's one more thing about subroutes. When a subrouter has a path prefix,
|
||||
the inner routes use it as base for their paths:
|
||||
|
||||
r := mux.NewRouter()
|
||||
s := r.PathPrefix("/products").Subrouter()
|
||||
// "/products/"
|
||||
s.HandleFunc("/", ProductsHandler)
|
||||
// "/products/{key}/"
|
||||
s.HandleFunc("/{key}/", ProductHandler)
|
||||
// "/products/{key}/details"
|
||||
s.HandleFunc("/{key}/details", ProductDetailsHandler)
|
||||
|
||||
Note that the path provided to PathPrefix() represents a "wildcard": calling
|
||||
PathPrefix("/static/").Handler(...) means that the handler will be passed any
|
||||
request that matches "/static/*". This makes it easy to serve static files with mux:
|
||||
|
||||
func main() {
|
||||
var dir string
|
||||
|
||||
flag.StringVar(&dir, "dir", ".", "the directory to serve files from. Defaults to the current dir")
|
||||
flag.Parse()
|
||||
r := mux.NewRouter()
|
||||
|
||||
// This will serve files under http://localhost:8000/static/<filename>
|
||||
r.PathPrefix("/static/").Handler(http.StripPrefix("/static/", http.FileServer(http.Dir(dir))))
|
||||
|
||||
srv := &http.Server{
|
||||
Handler: r,
|
||||
Addr: "127.0.0.1:8000",
|
||||
// Good practice: enforce timeouts for servers you create!
|
||||
WriteTimeout: 15 * time.Second,
|
||||
ReadTimeout: 15 * time.Second,
|
||||
}
|
||||
|
||||
log.Fatal(srv.ListenAndServe())
|
||||
}
|
||||
|
||||
Now let's see how to build registered URLs.
|
||||
|
||||
Routes can be named. All routes that define a name can have their URLs built,
|
||||
or "reversed". We define a name calling Name() on a route. For example:
|
||||
|
||||
r := mux.NewRouter()
|
||||
r.HandleFunc("/articles/{category}/{id:[0-9]+}", ArticleHandler).
|
||||
Name("article")
|
||||
|
||||
To build a URL, get the route and call the URL() method, passing a sequence of
|
||||
key/value pairs for the route variables. For the previous route, we would do:
|
||||
|
||||
url, err := r.Get("article").URL("category", "technology", "id", "42")
|
||||
|
||||
...and the result will be a url.URL with the following path:
|
||||
|
||||
"/articles/technology/42"
|
||||
|
||||
This also works for host and query value variables:
|
||||
|
||||
r := mux.NewRouter()
|
||||
r.Host("{subdomain}.domain.com").
|
||||
Path("/articles/{category}/{id:[0-9]+}").
|
||||
Queries("filter", "{filter}").
|
||||
HandlerFunc(ArticleHandler).
|
||||
Name("article")
|
||||
|
||||
// url.String() will be "http://news.domain.com/articles/technology/42?filter=gorilla"
|
||||
url, err := r.Get("article").URL("subdomain", "news",
|
||||
"category", "technology",
|
||||
"id", "42",
|
||||
"filter", "gorilla")
|
||||
|
||||
All variables defined in the route are required, and their values must
|
||||
conform to the corresponding patterns. These requirements guarantee that a
|
||||
generated URL will always match a registered route -- the only exception is
|
||||
for explicitly defined "build-only" routes which never match.
|
||||
|
||||
Regex support also exists for matching Headers within a route. For example, we could do:
|
||||
|
||||
r.HeadersRegexp("Content-Type", "application/(text|json)")
|
||||
|
||||
...and the route will match both requests with a Content-Type of `application/json` as well as
|
||||
`application/text`
|
||||
|
||||
There's also a way to build only the URL host or path for a route:
|
||||
use the methods URLHost() or URLPath() instead. For the previous route,
|
||||
we would do:
|
||||
|
||||
// "http://news.domain.com/"
|
||||
host, err := r.Get("article").URLHost("subdomain", "news")
|
||||
|
||||
// "/articles/technology/42"
|
||||
path, err := r.Get("article").URLPath("category", "technology", "id", "42")
|
||||
|
||||
And if you use subrouters, host and path defined separately can be built
|
||||
as well:
|
||||
|
||||
r := mux.NewRouter()
|
||||
s := r.Host("{subdomain}.domain.com").Subrouter()
|
||||
s.Path("/articles/{category}/{id:[0-9]+}").
|
||||
HandlerFunc(ArticleHandler).
|
||||
Name("article")
|
||||
|
||||
// "http://news.domain.com/articles/technology/42"
|
||||
url, err := r.Get("article").URL("subdomain", "news",
|
||||
"category", "technology",
|
||||
"id", "42")
|
||||
|
||||
Mux supports the addition of middlewares to a Router, which are executed in the order they are added if a match is found, including its subrouters. Middlewares are (typically) small pieces of code which take one request, do something with it, and pass it down to another middleware or the final handler. Some common use cases for middleware are request logging, header manipulation, or ResponseWriter hijacking.
|
||||
|
||||
type MiddlewareFunc func(http.Handler) http.Handler
|
||||
|
||||
Typically, the returned handler is a closure which does something with the http.ResponseWriter and http.Request passed to it, and then calls the handler passed as parameter to the MiddlewareFunc (closures can access variables from the context where they are created).
|
||||
|
||||
A very basic middleware which logs the URI of the request being handled could be written as:
|
||||
|
||||
func simpleMw(next http.Handler) http.Handler {
|
||||
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
|
||||
// Do stuff here
|
||||
log.Println(r.RequestURI)
|
||||
// Call the next handler, which can be another middleware in the chain, or the final handler.
|
||||
next.ServeHTTP(w, r)
|
||||
})
|
||||
}
|
||||
|
||||
Middlewares can be added to a router using `Router.Use()`:
|
||||
|
||||
r := mux.NewRouter()
|
||||
r.HandleFunc("/", handler)
|
||||
r.Use(simpleMw)
|
||||
|
||||
A more complex authentication middleware, which maps session token to users, could be written as:
|
||||
|
||||
// Define our struct
|
||||
type authenticationMiddleware struct {
|
||||
tokenUsers map[string]string
|
||||
}
|
||||
|
||||
// Initialize it somewhere
|
||||
func (amw *authenticationMiddleware) Populate() {
|
||||
amw.tokenUsers["00000000"] = "user0"
|
||||
amw.tokenUsers["aaaaaaaa"] = "userA"
|
||||
amw.tokenUsers["05f717e5"] = "randomUser"
|
||||
amw.tokenUsers["deadbeef"] = "user0"
|
||||
}
|
||||
|
||||
// Middleware function, which will be called for each request
|
||||
func (amw *authenticationMiddleware) Middleware(next http.Handler) http.Handler {
|
||||
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
|
||||
token := r.Header.Get("X-Session-Token")
|
||||
|
||||
if user, found := amw.tokenUsers[token]; found {
|
||||
// We found the token in our map
|
||||
log.Printf("Authenticated user %s\n", user)
|
||||
next.ServeHTTP(w, r)
|
||||
} else {
|
||||
http.Error(w, "Forbidden", http.StatusForbidden)
|
||||
}
|
||||
})
|
||||
}
|
||||
|
||||
r := mux.NewRouter()
|
||||
r.HandleFunc("/", handler)
|
||||
|
||||
amw := authenticationMiddleware{tokenUsers: make(map[string]string)}
|
||||
amw.Populate()
|
||||
|
||||
r.Use(amw.Middleware)
|
||||
|
||||
Note: The handler chain will be stopped if your middleware doesn't call `next.ServeHTTP()` with the corresponding parameters. This can be used to abort a request if the middleware writer wants to.
|
||||
|
||||
*/
|
||||
package mux
|
@ -0,0 +1 @@
|
||||
module github.com/gorilla/mux
|
@ -0,0 +1,79 @@
|
||||
package mux
|
||||
|
||||
import (
|
||||
"net/http"
|
||||
"strings"
|
||||
)
|
||||
|
||||
// MiddlewareFunc is a function which receives an http.Handler and returns another http.Handler.
|
||||
// Typically, the returned handler is a closure which does something with the http.ResponseWriter and http.Request passed
|
||||
// to it, and then calls the handler passed as parameter to the MiddlewareFunc.
|
||||
type MiddlewareFunc func(http.Handler) http.Handler
|
||||
|
||||
// middleware interface is anything which implements a MiddlewareFunc named Middleware.
|
||||
type middleware interface {
|
||||
Middleware(handler http.Handler) http.Handler
|
||||
}
|
||||
|
||||
// Middleware allows MiddlewareFunc to implement the middleware interface.
|
||||
func (mw MiddlewareFunc) Middleware(handler http.Handler) http.Handler {
|
||||
return mw(handler)
|
||||
}
|
||||
|
||||
// Use appends a MiddlewareFunc to the chain. Middleware can be used to intercept or otherwise modify requests and/or responses, and are executed in the order that they are applied to the Router.
|
||||
func (r *Router) Use(mwf ...MiddlewareFunc) {
|
||||
for _, fn := range mwf {
|
||||
r.middlewares = append(r.middlewares, fn)
|
||||
}
|
||||
}
|
||||
|
||||
// useInterface appends a middleware to the chain. Middleware can be used to intercept or otherwise modify requests and/or responses, and are executed in the order that they are applied to the Router.
|
||||
func (r *Router) useInterface(mw middleware) {
|
||||
r.middlewares = append(r.middlewares, mw)
|
||||
}
|
||||
|
||||
// CORSMethodMiddleware automatically sets the Access-Control-Allow-Methods response header
|
||||
// on requests for routes that have an OPTIONS method matcher to all the method matchers on
|
||||
// the route. Routes that do not explicitly handle OPTIONS requests will not be processed
|
||||
// by the middleware. See examples for usage.
|
||||
func CORSMethodMiddleware(r *Router) MiddlewareFunc {
|
||||
return func(next http.Handler) http.Handler {
|
||||
return http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
|
||||
allMethods, err := getAllMethodsForRoute(r, req)
|
||||
if err == nil {
|
||||
for _, v := range allMethods {
|
||||
if v == http.MethodOptions {
|
||||
w.Header().Set("Access-Control-Allow-Methods", strings.Join(allMethods, ","))
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
next.ServeHTTP(w, req)
|
||||
})
|
||||
}
|
||||
}
|
||||
|
||||
// getAllMethodsForRoute returns all the methods from method matchers matching a given
|
||||
// request.
|
||||
func getAllMethodsForRoute(r *Router, req *http.Request) ([]string, error) {
|
||||
var allMethods []string
|
||||
|
||||
err := r.Walk(func(route *Route, _ *Router, _ []*Route) error {
|
||||
for _, m := range route.matchers {
|
||||
if _, ok := m.(*routeRegexp); ok {
|
||||
if m.Match(req, &RouteMatch{}) {
|
||||
methods, err := route.GetMethods()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
allMethods = append(allMethods, methods...)
|
||||
}
|
||||
break
|
||||
}
|
||||
}
|
||||
return nil
|
||||
})
|
||||
|
||||
return allMethods, err
|
||||
}
|
@ -0,0 +1,607 @@
|
||||
// Copyright 2012 The Gorilla Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package mux
|
||||
|
||||
import (
|
||||
"errors"
|
||||
"fmt"
|
||||
"net/http"
|
||||
"path"
|
||||
"regexp"
|
||||
)
|
||||
|
||||
var (
|
||||
// ErrMethodMismatch is returned when the method in the request does not match
|
||||
// the method defined against the route.
|
||||
ErrMethodMismatch = errors.New("method is not allowed")
|
||||
// ErrNotFound is returned when no route match is found.
|
||||
ErrNotFound = errors.New("no matching route was found")
|
||||
)
|
||||
|
||||
// NewRouter returns a new router instance.
|
||||
func NewRouter() *Router {
|
||||
return &Router{namedRoutes: make(map[string]*Route)}
|
||||
}
|
||||
|
||||
// Router registers routes to be matched and dispatches a handler.
|
||||
//
|
||||
// It implements the http.Handler interface, so it can be registered to serve
|
||||
// requests:
|
||||
//
|
||||
// var router = mux.NewRouter()
|
||||
//
|
||||
// func main() {
|
||||
// http.Handle("/", router)
|
||||
// }
|
||||
//
|
||||
// Or, for Google App Engine, register it in a init() function:
|
||||
//
|
||||
// func init() {
|
||||
// http.Handle("/", router)
|
||||
// }
|
||||
//
|
||||
// This will send all incoming requests to the router.
|
||||
type Router struct {
|
||||
// Configurable Handler to be used when no route matches.
|
||||
NotFoundHandler http.Handler
|
||||
|
||||
// Configurable Handler to be used when the request method does not match the route.
|
||||
MethodNotAllowedHandler http.Handler
|
||||
|
||||
// Routes to be matched, in order.
|
||||
routes []*Route
|
||||
|
||||
// Routes by name for URL building.
|
||||
namedRoutes map[string]*Route
|
||||
|
||||
// If true, do not clear the request context after handling the request.
|
||||
//
|
||||
// Deprecated: No effect when go1.7+ is used, since the context is stored
|
||||
// on the request itself.
|
||||
KeepContext bool
|
||||
|
||||
// Slice of middlewares to be called after a match is found
|
||||
middlewares []middleware
|
||||
|
||||
// configuration shared with `Route`
|
||||
routeConf
|
||||
}
|
||||
|
||||
// common route configuration shared between `Router` and `Route`
|
||||
type routeConf struct {
|
||||
// If true, "/path/foo%2Fbar/to" will match the path "/path/{var}/to"
|
||||
useEncodedPath bool
|
||||
|
||||
// If true, when the path pattern is "/path/", accessing "/path" will
|
||||
// redirect to the former and vice versa.
|
||||
strictSlash bool
|
||||
|
||||
// If true, when the path pattern is "/path//to", accessing "/path//to"
|
||||
// will not redirect
|
||||
skipClean bool
|
||||
|
||||
// Manager for the variables from host and path.
|
||||
regexp routeRegexpGroup
|
||||
|
||||
// List of matchers.
|
||||
matchers []matcher
|
||||
|
||||
// The scheme used when building URLs.
|
||||
buildScheme string
|
||||
|
||||
buildVarsFunc BuildVarsFunc
|
||||
}
|
||||
|
||||
// returns an effective deep copy of `routeConf`
|
||||
func copyRouteConf(r routeConf) routeConf {
|
||||
c := r
|
||||
|
||||
if r.regexp.path != nil {
|
||||
c.regexp.path = copyRouteRegexp(r.regexp.path)
|
||||
}
|
||||
|
||||
if r.regexp.host != nil {
|
||||
c.regexp.host = copyRouteRegexp(r.regexp.host)
|
||||
}
|
||||
|
||||
c.regexp.queries = make([]*routeRegexp, 0, len(r.regexp.queries))
|
||||
for _, q := range r.regexp.queries {
|
||||
c.regexp.queries = append(c.regexp.queries, copyRouteRegexp(q))
|
||||
}
|
||||
|
||||
c.matchers = make([]matcher, 0, len(r.matchers))
|
||||
for _, m := range r.matchers {
|
||||
c.matchers = append(c.matchers, m)
|
||||
}
|
||||
|
||||
return c
|
||||
}
|
||||
|
||||
func copyRouteRegexp(r *routeRegexp) *routeRegexp {
|
||||
c := *r
|
||||
return &c
|
||||
}
|
||||
|
||||
// Match attempts to match the given request against the router's registered routes.
|
||||
//
|
||||
// If the request matches a route of this router or one of its subrouters the Route,
|
||||
// Handler, and Vars fields of the the match argument are filled and this function
|
||||
// returns true.
|
||||
//
|
||||
// If the request does not match any of this router's or its subrouters' routes
|
||||
// then this function returns false. If available, a reason for the match failure
|
||||
// will be filled in the match argument's MatchErr field. If the match failure type
|
||||
// (eg: not found) has a registered handler, the handler is assigned to the Handler
|
||||
// field of the match argument.
|
||||
func (r *Router) Match(req *http.Request, match *RouteMatch) bool {
|
||||
for _, route := range r.routes {
|
||||
if route.Match(req, match) {
|
||||
// Build middleware chain if no error was found
|
||||
if match.MatchErr == nil {
|
||||
for i := len(r.middlewares) - 1; i >= 0; i-- {
|
||||
match.Handler = r.middlewares[i].Middleware(match.Handler)
|
||||
}
|
||||
}
|
||||
return true
|
||||
}
|
||||
}
|
||||
|
||||
if match.MatchErr == ErrMethodMismatch {
|
||||
if r.MethodNotAllowedHandler != nil {
|
||||
match.Handler = r.MethodNotAllowedHandler
|
||||
return true
|
||||
}
|
||||
|
||||
return false
|
||||
}
|
||||
|
||||
// Closest match for a router (includes sub-routers)
|
||||
if r.NotFoundHandler != nil {
|
||||
match.Handler = r.NotFoundHandler
|
||||
match.MatchErr = ErrNotFound
|
||||
return true
|
||||
}
|
||||
|
||||
match.MatchErr = ErrNotFound
|
||||
return false
|
||||
}
|
||||
|
||||
// ServeHTTP dispatches the handler registered in the matched route.
|
||||
//
|
||||
// When there is a match, the route variables can be retrieved calling
|
||||
// mux.Vars(request).
|
||||
func (r *Router) ServeHTTP(w http.ResponseWriter, req *http.Request) {
|
||||
if !r.skipClean {
|
||||
path := req.URL.Path
|
||||
if r.useEncodedPath {
|
||||
path = req.URL.EscapedPath()
|
||||
}
|
||||
// Clean path to canonical form and redirect.
|
||||
if p := cleanPath(path); p != path {
|
||||
|
||||
// Added 3 lines (Philip Schlump) - It was dropping the query string and #whatever from query.
|
||||
// This matches with fix in go 1.2 r.c. 4 for same problem. Go Issue:
|
||||
// http://code.google.com/p/go/issues/detail?id=5252
|
||||
url := *req.URL
|
||||
url.Path = p
|
||||
p = url.String()
|
||||
|
||||
w.Header().Set("Location", p)
|
||||
w.WriteHeader(http.StatusMovedPermanently)
|
||||
return
|
||||
}
|
||||
}
|
||||
var match RouteMatch
|
||||
var handler http.Handler
|
||||
if r.Match(req, &match) {
|
||||
handler = match.Handler
|
||||
req = setVars(req, match.Vars)
|
||||
req = setCurrentRoute(req, match.Route)
|
||||
}
|
||||
|
||||
if handler == nil && match.MatchErr == ErrMethodMismatch {
|
||||
handler = methodNotAllowedHandler()
|
||||
}
|
||||
|
||||
if handler == nil {
|
||||
handler = http.NotFoundHandler()
|
||||
}
|
||||
|
||||
handler.ServeHTTP(w, req)
|
||||
}
|
||||
|
||||
// Get returns a route registered with the given name.
|
||||
func (r *Router) Get(name string) *Route {
|
||||
return r.namedRoutes[name]
|
||||
}
|
||||
|
||||
// GetRoute returns a route registered with the given name. This method
|
||||
// was renamed to Get() and remains here for backwards compatibility.
|
||||
func (r *Router) GetRoute(name string) *Route {
|
||||
return r.namedRoutes[name]
|
||||
}
|
||||
|
||||
// StrictSlash defines the trailing slash behavior for new routes. The initial
|
||||
// value is false.
|
||||
//
|
||||
// When true, if the route path is "/path/", accessing "/path" will perform a redirect
|
||||
// to the former and vice versa. In other words, your application will always
|
||||
// see the path as specified in the route.
|
||||
//
|
||||
// When false, if the route path is "/path", accessing "/path/" will not match
|
||||
// this route and vice versa.
|
||||
//
|
||||
// The re-direct is a HTTP 301 (Moved Permanently). Note that when this is set for
|
||||
// routes with a non-idempotent method (e.g. POST, PUT), the subsequent re-directed
|
||||
// request will be made as a GET by most clients. Use middleware or client settings
|
||||
// to modify this behaviour as needed.
|
||||
//
|
||||
// Special case: when a route sets a path prefix using the PathPrefix() method,
|
||||
// strict slash is ignored for that route because the redirect behavior can't
|
||||
// be determined from a prefix alone. However, any subrouters created from that
|
||||
// route inherit the original StrictSlash setting.
|
||||
func (r *Router) StrictSlash(value bool) *Router {
|
||||
r.strictSlash = value
|
||||
return r
|
||||
}
|
||||
|
||||
// SkipClean defines the path cleaning behaviour for new routes. The initial
|
||||
// value is false. Users should be careful about which routes are not cleaned
|
||||
//
|
||||
// When true, if the route path is "/path//to", it will remain with the double
|
||||
// slash. This is helpful if you have a route like: /fetch/http://xkcd.com/534/
|
||||
//
|
||||
// When false, the path will be cleaned, so /fetch/http://xkcd.com/534/ will
|
||||
// become /fetch/http/xkcd.com/534
|
||||
func (r *Router) SkipClean(value bool) *Router {
|
||||
r.skipClean = value
|
||||
return r
|
||||
}
|
||||
|
||||
// UseEncodedPath tells the router to match the encoded original path
|
||||
// to the routes.
|
||||
// For eg. "/path/foo%2Fbar/to" will match the path "/path/{var}/to".
|
||||
//
|
||||
// If not called, the router will match the unencoded path to the routes.
|
||||
// For eg. "/path/foo%2Fbar/to" will match the path "/path/foo/bar/to"
|
||||
func (r *Router) UseEncodedPath() *Router {
|
||||
r.useEncodedPath = true
|
||||
return r
|
||||
}
|
||||
|
||||
// ----------------------------------------------------------------------------
|
||||
// Route factories
|
||||
// ----------------------------------------------------------------------------
|
||||
|
||||
// NewRoute registers an empty route.
|
||||
func (r *Router) NewRoute() *Route {
|
||||
// initialize a route with a copy of the parent router's configuration
|
||||
route := &Route{routeConf: copyRouteConf(r.routeConf), namedRoutes: r.namedRoutes}
|
||||
r.routes = append(r.routes, route)
|
||||
return route
|
||||
}
|
||||
|
||||
// Name registers a new route with a name.
|
||||
// See Route.Name().
|
||||
func (r *Router) Name(name string) *Route {
|
||||
return r.NewRoute().Name(name)
|
||||
}
|
||||
|
||||
// Handle registers a new route with a matcher for the URL path.
|
||||
// See Route.Path() and Route.Handler().
|
||||
func (r *Router) Handle(path string, handler http.Handler) *Route {
|
||||
return r.NewRoute().Path(path).Handler(handler)
|
||||
}
|
||||
|
||||
// HandleFunc registers a new route with a matcher for the URL path.
|
||||
// See Route.Path() and Route.HandlerFunc().
|
||||
func (r *Router) HandleFunc(path string, f func(http.ResponseWriter,
|
||||
*http.Request)) *Route {
|
||||
return r.NewRoute().Path(path).HandlerFunc(f)
|
||||
}
|
||||
|
||||
// Headers registers a new route with a matcher for request header values.
|
||||
// See Route.Headers().
|
||||
func (r *Router) Headers(pairs ...string) *Route {
|
||||
return r.NewRoute().Headers(pairs...)
|
||||
}
|
||||
|
||||
// Host registers a new route with a matcher for the URL host.
|
||||
// See Route.Host().
|
||||
func (r *Router) Host(tpl string) *Route {
|
||||
return r.NewRoute().Host(tpl)
|
||||
}
|
||||
|
||||
// MatcherFunc registers a new route with a custom matcher function.
|
||||
// See Route.MatcherFunc().
|
||||
func (r *Router) MatcherFunc(f MatcherFunc) *Route {
|
||||
return r.NewRoute().MatcherFunc(f)
|
||||
}
|
||||
|
||||
// Methods registers a new route with a matcher for HTTP methods.
|
||||
// See Route.Methods().
|
||||
func (r *Router) Methods(methods ...string) *Route {
|
||||
return r.NewRoute().Methods(methods...)
|
||||
}
|
||||
|
||||
// Path registers a new route with a matcher for the URL path.
|
||||
// See Route.Path().
|
||||
func (r *Router) Path(tpl string) *Route {
|
||||
return r.NewRoute().Path(tpl)
|
||||
}
|
||||
|
||||
// PathPrefix registers a new route with a matcher for the URL path prefix.
|
||||
// See Route.PathPrefix().
|
||||
func (r *Router) PathPrefix(tpl string) *Route {
|
||||
return r.NewRoute().PathPrefix(tpl)
|
||||
}
|
||||
|
||||
// Queries registers a new route with a matcher for URL query values.
|
||||
// See Route.Queries().
|
||||
func (r *Router) Queries(pairs ...string) *Route {
|
||||
return r.NewRoute().Queries(pairs...)
|
||||
}
|
||||
|
||||
// Schemes registers a new route with a matcher for URL schemes.
|
||||
// See Route.Schemes().
|
||||
func (r *Router) Schemes(schemes ...string) *Route {
|
||||
return r.NewRoute().Schemes(schemes...)
|
||||
}
|
||||
|
||||
// BuildVarsFunc registers a new route with a custom function for modifying
|
||||
// route variables before building a URL.
|
||||
func (r *Router) BuildVarsFunc(f BuildVarsFunc) *Route {
|
||||
return r.NewRoute().BuildVarsFunc(f)
|
||||
}
|
||||
|
||||
// Walk walks the router and all its sub-routers, calling walkFn for each route
|
||||
// in the tree. The routes are walked in the order they were added. Sub-routers
|
||||
// are explored depth-first.
|
||||
func (r *Router) Walk(walkFn WalkFunc) error {
|
||||
return r.walk(walkFn, []*Route{})
|
||||
}
|
||||
|
||||
// SkipRouter is used as a return value from WalkFuncs to indicate that the
|
||||
// router that walk is about to descend down to should be skipped.
|
||||
var SkipRouter = errors.New("skip this router")
|
||||
|
||||
// WalkFunc is the type of the function called for each route visited by Walk.
|
||||
// At every invocation, it is given the current route, and the current router,
|
||||
// and a list of ancestor routes that lead to the current route.
|
||||
type WalkFunc func(route *Route, router *Router, ancestors []*Route) error
|
||||
|
||||
func (r *Router) walk(walkFn WalkFunc, ancestors []*Route) error {
|
||||
for _, t := range r.routes {
|
||||
err := walkFn(t, r, ancestors)
|
||||
if err == SkipRouter {
|
||||
continue
|
||||
}
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
for _, sr := range t.matchers {
|
||||
if h, ok := sr.(*Router); ok {
|
||||
ancestors = append(ancestors, t)
|
||||
err := h.walk(walkFn, ancestors)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
ancestors = ancestors[:len(ancestors)-1]
|
||||
}
|
||||
}
|
||||
if h, ok := t.handler.(*Router); ok {
|
||||
ancestors = append(ancestors, t)
|
||||
err := h.walk(walkFn, ancestors)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
ancestors = ancestors[:len(ancestors)-1]
|
||||
}
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// ----------------------------------------------------------------------------
|
||||
// Context
|
||||
// ----------------------------------------------------------------------------
|
||||
|
||||
// RouteMatch stores information about a matched route.
|
||||
type RouteMatch struct {
|
||||
Route *Route
|
||||
Handler http.Handler
|
||||
Vars map[string]string
|
||||
|
||||
// MatchErr is set to appropriate matching error
|
||||
// It is set to ErrMethodMismatch if there is a mismatch in
|
||||
// the request method and route method
|
||||
MatchErr error
|
||||
}
|
||||
|
||||
type contextKey int
|
||||
|
||||
const (
|
||||
varsKey contextKey = iota
|
||||
routeKey
|
||||
)
|
||||
|
||||
// Vars returns the route variables for the current request, if any.
|
||||
func Vars(r *http.Request) map[string]string {
|
||||
if rv := contextGet(r, varsKey); rv != nil {
|
||||
return rv.(map[string]string)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// CurrentRoute returns the matched route for the current request, if any.
|
||||
// This only works when called inside the handler of the matched route
|
||||
// because the matched route is stored in the request context which is cleared
|
||||
// after the handler returns, unless the KeepContext option is set on the
|
||||
// Router.
|
||||
func CurrentRoute(r *http.Request) *Route {
|
||||
if rv := contextGet(r, routeKey); rv != nil {
|
||||
return rv.(*Route)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func setVars(r *http.Request, val interface{}) *http.Request {
|
||||
return contextSet(r, varsKey, val)
|
||||
}
|
||||
|
||||
func setCurrentRoute(r *http.Request, val interface{}) *http.Request {
|
||||
return contextSet(r, routeKey, val)
|
||||
}
|
||||
|
||||
// ----------------------------------------------------------------------------
|
||||
// Helpers
|
||||
// ----------------------------------------------------------------------------
|
||||
|
||||
// cleanPath returns the canonical path for p, eliminating . and .. elements.
|
||||
// Borrowed from the net/http package.
|
||||
func cleanPath(p string) string {
|
||||
if p == "" {
|
||||
return "/"
|
||||
}
|
||||
if p[0] != '/' {
|
||||
p = "/" + p
|
||||
}
|
||||
np := path.Clean(p)
|
||||
// path.Clean removes trailing slash except for root;
|
||||
// put the trailing slash back if necessary.
|
||||
if p[len(p)-1] == '/' && np != "/" {
|
||||
np += "/"
|
||||
}
|
||||
|
||||
return np
|
||||
}
|
||||
|
||||
// uniqueVars returns an error if two slices contain duplicated strings.
|
||||
func uniqueVars(s1, s2 []string) error {
|
||||
for _, v1 := range s1 {
|
||||
for _, v2 := range s2 {
|
||||
if v1 == v2 {
|
||||
return fmt.Errorf("mux: duplicated route variable %q", v2)
|
||||
}
|
||||
}
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// checkPairs returns the count of strings passed in, and an error if
|
||||
// the count is not an even number.
|
||||
func checkPairs(pairs ...string) (int, error) {
|
||||
length := len(pairs)
|
||||
if length%2 != 0 {
|
||||
return length, fmt.Errorf(
|
||||
"mux: number of parameters must be multiple of 2, got %v", pairs)
|
||||
}
|
||||
return length, nil
|
||||
}
|
||||
|
||||
// mapFromPairsToString converts variadic string parameters to a
|
||||
// string to string map.
|
||||
func mapFromPairsToString(pairs ...string) (map[string]string, error) {
|
||||
length, err := checkPairs(pairs...)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
m := make(map[string]string, length/2)
|
||||
for i := 0; i < length; i += 2 {
|
||||
m[pairs[i]] = pairs[i+1]
|
||||
}
|
||||
return m, nil
|
||||
}
|
||||
|
||||
// mapFromPairsToRegex converts variadic string parameters to a
|
||||
// string to regex map.
|
||||
func mapFromPairsToRegex(pairs ...string) (map[string]*regexp.Regexp, error) {
|
||||
length, err := checkPairs(pairs...)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
m := make(map[string]*regexp.Regexp, length/2)
|
||||
for i := 0; i < length; i += 2 {
|
||||
regex, err := regexp.Compile(pairs[i+1])
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
m[pairs[i]] = regex
|
||||
}
|
||||
return m, nil
|
||||
}
|
||||
|
||||
// matchInArray returns true if the given string value is in the array.
|
||||
func matchInArray(arr []string, value string) bool {
|
||||
for _, v := range arr {
|
||||
if v == value {
|
||||
return true
|
||||
}
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
// matchMapWithString returns true if the given key/value pairs exist in a given map.
|
||||
func matchMapWithString(toCheck map[string]string, toMatch map[string][]string, canonicalKey bool) bool {
|
||||
for k, v := range toCheck {
|
||||
// Check if key exists.
|
||||
if canonicalKey {
|
||||
k = http.CanonicalHeaderKey(k)
|
||||
}
|
||||
if values := toMatch[k]; values == nil {
|
||||
return false
|
||||
} else if v != "" {
|
||||
// If value was defined as an empty string we only check that the
|
||||
// key exists. Otherwise we also check for equality.
|
||||
valueExists := false
|
||||
for _, value := range values {
|
||||
if v == value {
|
||||
valueExists = true
|
||||
break
|
||||
}
|
||||
}
|
||||
if !valueExists {
|
||||
return false
|
||||
}
|
||||
}
|
||||
}
|
||||
return true
|
||||
}
|
||||
|
||||
// matchMapWithRegex returns true if the given key/value pairs exist in a given map compiled against
|
||||
// the given regex
|
||||
func matchMapWithRegex(toCheck map[string]*regexp.Regexp, toMatch map[string][]string, canonicalKey bool) bool {
|
||||
for k, v := range toCheck {
|
||||
// Check if key exists.
|
||||
if canonicalKey {
|
||||
k = http.CanonicalHeaderKey(k)
|
||||
}
|
||||
if values := toMatch[k]; values == nil {
|
||||
return false
|
||||
} else if v != nil {
|
||||
// If value was defined as an empty string we only check that the
|
||||
// key exists. Otherwise we also check for equality.
|
||||
valueExists := false
|
||||
for _, value := range values {
|
||||
if v.MatchString(value) {
|
||||
valueExists = true
|
||||
break
|
||||
}
|
||||
}
|
||||
if !valueExists {
|
||||
return false
|
||||
}
|
||||
}
|
||||
}
|
||||
return true
|
||||
}
|
||||
|
||||
// methodNotAllowed replies to the request with an HTTP status code 405.
|
||||
func methodNotAllowed(w http.ResponseWriter, r *http.Request) {
|
||||
w.WriteHeader(http.StatusMethodNotAllowed)
|
||||
}
|
||||
|
||||
// methodNotAllowedHandler returns a simple request handler
|
||||
// that replies to each request with a status code 405.
|
||||
func methodNotAllowedHandler() http.Handler { return http.HandlerFunc(methodNotAllowed) }
|
@ -0,0 +1,345 @@
|
||||
// Copyright 2012 The Gorilla Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package mux
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"fmt"
|
||||
"net/http"
|
||||
"net/url"
|
||||
"regexp"
|
||||
"strconv"
|
||||
"strings"
|
||||
)
|
||||
|
||||
type routeRegexpOptions struct {
|
||||
strictSlash bool
|
||||
useEncodedPath bool
|
||||
}
|
||||
|
||||
type regexpType int
|
||||
|
||||
const (
|
||||
regexpTypePath regexpType = 0
|
||||
regexpTypeHost regexpType = 1
|
||||
regexpTypePrefix regexpType = 2
|
||||
regexpTypeQuery regexpType = 3
|
||||
)
|
||||
|
||||
// newRouteRegexp parses a route template and returns a routeRegexp,
|
||||
// used to match a host, a path or a query string.
|
||||
//
|
||||
// It will extract named variables, assemble a regexp to be matched, create
|
||||
// a "reverse" template to build URLs and compile regexps to validate variable
|
||||
// values used in URL building.
|
||||
//
|
||||
// Previously we accepted only Python-like identifiers for variable
|
||||
// names ([a-zA-Z_][a-zA-Z0-9_]*), but currently the only restriction is that
|
||||
// name and pattern can't be empty, and names can't contain a colon.
|
||||
func newRouteRegexp(tpl string, typ regexpType, options routeRegexpOptions) (*routeRegexp, error) {
|
||||
// Check if it is well-formed.
|
||||
idxs, errBraces := braceIndices(tpl)
|
||||
if errBraces != nil {
|
||||
return nil, errBraces
|
||||
}
|
||||
// Backup the original.
|
||||
template := tpl
|
||||
// Now let's parse it.
|
||||
defaultPattern := "[^/]+"
|
||||
if typ == regexpTypeQuery {
|
||||
defaultPattern = ".*"
|
||||
} else if typ == regexpTypeHost {
|
||||
defaultPattern = "[^.]+"
|
||||
}
|
||||
// Only match strict slash if not matching
|
||||
if typ != regexpTypePath {
|
||||
options.strictSlash = false
|
||||
}
|
||||
// Set a flag for strictSlash.
|
||||
endSlash := false
|
||||
if options.strictSlash && strings.HasSuffix(tpl, "/") {
|
||||
tpl = tpl[:len(tpl)-1]
|
||||
endSlash = true
|
||||
}
|
||||
varsN := make([]string, len(idxs)/2)
|
||||
varsR := make([]*regexp.Regexp, len(idxs)/2)
|
||||
pattern := bytes.NewBufferString("")
|
||||
pattern.WriteByte('^')
|
||||
reverse := bytes.NewBufferString("")
|
||||
var end int
|
||||
var err error
|
||||
for i := 0; i < len(idxs); i += 2 {
|
||||
// Set all values we are interested in.
|
||||
raw := tpl[end:idxs[i]]
|
||||
end = idxs[i+1]
|
||||
parts := strings.SplitN(tpl[idxs[i]+1:end-1], ":", 2)
|
||||
name := parts[0]
|
||||
patt := defaultPattern
|
||||
if len(parts) == 2 {
|
||||
patt = parts[1]
|
||||
}
|
||||
// Name or pattern can't be empty.
|
||||
if name == "" || patt == "" {
|
||||
return nil, fmt.Errorf("mux: missing name or pattern in %q",
|
||||
tpl[idxs[i]:end])
|
||||
}
|
||||
// Build the regexp pattern.
|
||||
fmt.Fprintf(pattern, "%s(?P<%s>%s)", regexp.QuoteMeta(raw), varGroupName(i/2), patt)
|
||||
|
||||
// Build the reverse template.
|
||||
fmt.Fprintf(reverse, "%s%%s", raw)
|
||||
|
||||
// Append variable name and compiled pattern.
|
||||
varsN[i/2] = name
|
||||
varsR[i/2], err = regexp.Compile(fmt.Sprintf("^%s$", patt))
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
// Add the remaining.
|
||||
raw := tpl[end:]
|
||||
pattern.WriteString(regexp.QuoteMeta(raw))
|
||||
if options.strictSlash {
|
||||
pattern.WriteString("[/]?")
|
||||
}
|
||||
if typ == regexpTypeQuery {
|
||||
// Add the default pattern if the query value is empty
|
||||
if queryVal := strings.SplitN(template, "=", 2)[1]; queryVal == "" {
|
||||
pattern.WriteString(defaultPattern)
|
||||
}
|
||||
}
|
||||
if typ != regexpTypePrefix {
|
||||
pattern.WriteByte('$')
|
||||
}
|
||||
|
||||
var wildcardHostPort bool
|
||||
if typ == regexpTypeHost {
|
||||
if !strings.Contains(pattern.String(), ":") {
|
||||
wildcardHostPort = true
|
||||
}
|
||||
}
|
||||
reverse.WriteString(raw)
|
||||
if endSlash {
|
||||
reverse.WriteByte('/')
|
||||
}
|
||||
// Compile full regexp.
|
||||
reg, errCompile := regexp.Compile(pattern.String())
|
||||
if errCompile != nil {
|
||||
return nil, errCompile
|
||||
}
|
||||
|
||||
// Check for capturing groups which used to work in older versions
|
||||
if reg.NumSubexp() != len(idxs)/2 {
|
||||
panic(fmt.Sprintf("route %s contains capture groups in its regexp. ", template) +
|
||||
"Only non-capturing groups are accepted: e.g. (?:pattern) instead of (pattern)")
|
||||
}
|
||||
|
||||
// Done!
|
||||
return &routeRegexp{
|
||||
template: template,
|
||||
regexpType: typ,
|
||||
options: options,
|
||||
regexp: reg,
|
||||
reverse: reverse.String(),
|
||||
varsN: varsN,
|
||||
varsR: varsR,
|
||||
wildcardHostPort: wildcardHostPort,
|
||||
}, nil
|
||||
}
|
||||
|
||||
// routeRegexp stores a regexp to match a host or path and information to
|
||||
// collect and validate route variables.
|
||||
type routeRegexp struct {
|
||||
// The unmodified template.
|
||||
template string
|
||||
// The type of match
|
||||
regexpType regexpType
|
||||
// Options for matching
|
||||
options routeRegexpOptions
|
||||
// Expanded regexp.
|
||||
regexp *regexp.Regexp
|
||||
// Reverse template.
|
||||
reverse string
|
||||
// Variable names.
|
||||
varsN []string
|
||||
// Variable regexps (validators).
|
||||
varsR []*regexp.Regexp
|
||||
// Wildcard host-port (no strict port match in hostname)
|
||||
wildcardHostPort bool
|
||||
}
|
||||
|
||||
// Match matches the regexp against the URL host or path.
|
||||
func (r *routeRegexp) Match(req *http.Request, match *RouteMatch) bool {
|
||||
if r.regexpType == regexpTypeHost {
|
||||
host := getHost(req)
|
||||
if r.wildcardHostPort {
|
||||
// Don't be strict on the port match
|
||||
if i := strings.Index(host, ":"); i != -1 {
|
||||
host = host[:i]
|
||||
}
|
||||
}
|
||||
return r.regexp.MatchString(host)
|
||||
} else {
|
||||
if r.regexpType == regexpTypeQuery {
|
||||
return r.matchQueryString(req)
|
||||
}
|
||||
path := req.URL.Path
|
||||
if r.options.useEncodedPath {
|
||||
path = req.URL.EscapedPath()
|
||||
}
|
||||
return r.regexp.MatchString(path)
|
||||
}
|
||||
}
|
||||
|
||||
// url builds a URL part using the given values.
|
||||
func (r *routeRegexp) url(values map[string]string) (string, error) {
|
||||
urlValues := make([]interface{}, len(r.varsN))
|
||||
for k, v := range r.varsN {
|
||||
value, ok := values[v]
|
||||
if !ok {
|
||||
return "", fmt.Errorf("mux: missing route variable %q", v)
|
||||
}
|
||||
if r.regexpType == regexpTypeQuery {
|
||||
value = url.QueryEscape(value)
|
||||
}
|
||||
urlValues[k] = value
|
||||
}
|
||||
rv := fmt.Sprintf(r.reverse, urlValues...)
|
||||
if !r.regexp.MatchString(rv) {
|
||||
// The URL is checked against the full regexp, instead of checking
|
||||
// individual variables. This is faster but to provide a good error
|
||||
// message, we check individual regexps if the URL doesn't match.
|
||||
for k, v := range r.varsN {
|
||||
if !r.varsR[k].MatchString(values[v]) {
|
||||
return "", fmt.Errorf(
|
||||
"mux: variable %q doesn't match, expected %q", values[v],
|
||||
r.varsR[k].String())
|
||||
}
|
||||
}
|
||||
}
|
||||
return rv, nil
|
||||
}
|
||||
|
||||
// getURLQuery returns a single query parameter from a request URL.
|
||||
// For a URL with foo=bar&baz=ding, we return only the relevant key
|
||||
// value pair for the routeRegexp.
|
||||
func (r *routeRegexp) getURLQuery(req *http.Request) string {
|
||||
if r.regexpType != regexpTypeQuery {
|
||||
return ""
|
||||
}
|
||||
templateKey := strings.SplitN(r.template, "=", 2)[0]
|
||||
for key, vals := range req.URL.Query() {
|
||||
if key == templateKey && len(vals) > 0 {
|
||||
return key + "=" + vals[0]
|
||||
}
|
||||
}
|
||||
return ""
|
||||
}
|
||||
|
||||
func (r *routeRegexp) matchQueryString(req *http.Request) bool {
|
||||
return r.regexp.MatchString(r.getURLQuery(req))
|
||||
}
|
||||
|
||||
// braceIndices returns the first level curly brace indices from a string.
|
||||
// It returns an error in case of unbalanced braces.
|
||||
func braceIndices(s string) ([]int, error) {
|
||||
var level, idx int
|
||||
var idxs []int
|
||||
for i := 0; i < len(s); i++ {
|
||||
switch s[i] {
|
||||
case '{':
|
||||
if level++; level == 1 {
|
||||
idx = i
|
||||
}
|
||||
case '}':
|
||||
if level--; level == 0 {
|
||||
idxs = append(idxs, idx, i+1)
|
||||
} else if level < 0 {
|
||||
return nil, fmt.Errorf("mux: unbalanced braces in %q", s)
|
||||
}
|
||||
}
|
||||
}
|
||||
if level != 0 {
|
||||
return nil, fmt.Errorf("mux: unbalanced braces in %q", s)
|
||||
}
|
||||
return idxs, nil
|
||||
}
|
||||
|
||||
// varGroupName builds a capturing group name for the indexed variable.
|
||||
func varGroupName(idx int) string {
|
||||
return "v" + strconv.Itoa(idx)
|
||||
}
|
||||
|
||||
// ----------------------------------------------------------------------------
|
||||
// routeRegexpGroup
|
||||
// ----------------------------------------------------------------------------
|
||||
|
||||
// routeRegexpGroup groups the route matchers that carry variables.
|
||||
type routeRegexpGroup struct {
|
||||
host *routeRegexp
|
||||
path *routeRegexp
|
||||
queries []*routeRegexp
|
||||
}
|
||||
|
||||
// setMatch extracts the variables from the URL once a route matches.
|
||||
func (v routeRegexpGroup) setMatch(req *http.Request, m *RouteMatch, r *Route) {
|
||||
// Store host variables.
|
||||
if v.host != nil {
|
||||
host := getHost(req)
|
||||
matches := v.host.regexp.FindStringSubmatchIndex(host)
|
||||
if len(matches) > 0 {
|
||||
extractVars(host, matches, v.host.varsN, m.Vars)
|
||||
}
|
||||
}
|
||||
path := req.URL.Path
|
||||
if r.useEncodedPath {
|
||||
path = req.URL.EscapedPath()
|
||||
}
|
||||
// Store path variables.
|
||||
if v.path != nil {
|
||||
matches := v.path.regexp.FindStringSubmatchIndex(path)
|
||||
if len(matches) > 0 {
|
||||
extractVars(path, matches, v.path.varsN, m.Vars)
|
||||
// Check if we should redirect.
|
||||
if v.path.options.strictSlash {
|
||||
p1 := strings.HasSuffix(path, "/")
|
||||
p2 := strings.HasSuffix(v.path.template, "/")
|
||||
if p1 != p2 {
|
||||
u, _ := url.Parse(req.URL.String())
|
||||
if p1 {
|
||||
u.Path = u.Path[:len(u.Path)-1]
|
||||
} else {
|
||||
u.Path += "/"
|
||||
}
|
||||
m.Handler = http.RedirectHandler(u.String(), http.StatusMovedPermanently)
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
// Store query string variables.
|
||||
for _, q := range v.queries {
|
||||
queryURL := q.getURLQuery(req)
|
||||
matches := q.regexp.FindStringSubmatchIndex(queryURL)
|
||||
if len(matches) > 0 {
|
||||
extractVars(queryURL, matches, q.varsN, m.Vars)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// getHost tries its best to return the request host.
|
||||
// According to section 14.23 of RFC 2616 the Host header
|
||||
// can include the port number if the default value of 80 is not used.
|
||||
func getHost(r *http.Request) string {
|
||||
if r.URL.IsAbs() {
|
||||
return r.URL.Host
|
||||
}
|
||||
return r.Host
|
||||
}
|
||||
|
||||
func extractVars(input string, matches []int, names []string, output map[string]string) {
|
||||
for i, name := range names {
|
||||
output[name] = input[matches[2*i+2]:matches[2*i+3]]
|
||||
}
|
||||
}
|
@ -0,0 +1,710 @@
|
||||
// Copyright 2012 The Gorilla Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package mux
|
||||
|
||||
import (
|
||||
"errors"
|
||||
"fmt"
|
||||
"net/http"
|
||||
"net/url"
|
||||
"regexp"
|
||||
"strings"
|
||||
)
|
||||
|
||||
// Route stores information to match a request and build URLs.
|
||||
type Route struct {
|
||||
// Request handler for the route.
|
||||
handler http.Handler
|
||||
// If true, this route never matches: it is only used to build URLs.
|
||||
buildOnly bool
|
||||
// The name used to build URLs.
|
||||
name string
|
||||
// Error resulted from building a route.
|
||||
err error
|
||||
|
||||
// "global" reference to all named routes
|
||||
namedRoutes map[string]*Route
|
||||
|
||||
// config possibly passed in from `Router`
|
||||
routeConf
|
||||
}
|
||||
|
||||
// SkipClean reports whether path cleaning is enabled for this route via
|
||||
// Router.SkipClean.
|
||||
func (r *Route) SkipClean() bool {
|
||||
return r.skipClean
|
||||
}
|
||||
|
||||
// Match matches the route against the request.
|
||||
func (r *Route) Match(req *http.Request, match *RouteMatch) bool {
|
||||
if r.buildOnly || r.err != nil {
|
||||
return false
|
||||
}
|
||||
|
||||
var matchErr error
|
||||
|
||||
// Match everything.
|
||||
for _, m := range r.matchers {
|
||||
if matched := m.Match(req, match); !matched {
|
||||
if _, ok := m.(methodMatcher); ok {
|
||||
matchErr = ErrMethodMismatch
|
||||
continue
|
||||
}
|
||||
|
||||
// Ignore ErrNotFound errors. These errors arise from match call
|
||||
// to Subrouters.
|
||||
//
|
||||
// This prevents subsequent matching subrouters from failing to
|
||||
// run middleware. If not ignored, the middleware would see a
|
||||
// non-nil MatchErr and be skipped, even when there was a
|
||||
// matching route.
|
||||
if match.MatchErr == ErrNotFound {
|
||||
match.MatchErr = nil
|
||||
}
|
||||
|
||||
matchErr = nil
|
||||
return false
|
||||
}
|
||||
}
|
||||
|
||||
if matchErr != nil {
|
||||
match.MatchErr = matchErr
|
||||
return false
|
||||
}
|
||||
|
||||
if match.MatchErr == ErrMethodMismatch {
|
||||
// We found a route which matches request method, clear MatchErr
|
||||
match.MatchErr = nil
|
||||
// Then override the mis-matched handler
|
||||
match.Handler = r.handler
|
||||
}
|
||||
|
||||
// Yay, we have a match. Let's collect some info about it.
|
||||
if match.Route == nil {
|
||||
match.Route = r
|
||||
}
|
||||
if match.Handler == nil {
|
||||
match.Handler = r.handler
|
||||
}
|
||||
if match.Vars == nil {
|
||||
match.Vars = make(map[string]string)
|
||||
}
|
||||
|
||||
// Set variables.
|
||||
r.regexp.setMatch(req, match, r)
|
||||
return true
|
||||
}
|
||||
|
||||
// ----------------------------------------------------------------------------
|
||||
// Route attributes
|
||||
// ----------------------------------------------------------------------------
|
||||
|
||||
// GetError returns an error resulted from building the route, if any.
|
||||
func (r *Route) GetError() error {
|
||||
return r.err
|
||||
}
|
||||
|
||||
// BuildOnly sets the route to never match: it is only used to build URLs.
|
||||
func (r *Route) BuildOnly() *Route {
|
||||
r.buildOnly = true
|
||||
return r
|
||||
}
|
||||
|
||||
// Handler --------------------------------------------------------------------
|
||||
|
||||
// Handler sets a handler for the route.
|
||||
func (r *Route) Handler(handler http.Handler) *Route {
|
||||
if r.err == nil {
|
||||
r.handler = handler
|
||||
}
|
||||
return r
|
||||
}
|
||||
|
||||
// HandlerFunc sets a handler function for the route.
|
||||
func (r *Route) HandlerFunc(f func(http.ResponseWriter, *http.Request)) *Route {
|
||||
return r.Handler(http.HandlerFunc(f))
|
||||
}
|
||||
|
||||
// GetHandler returns the handler for the route, if any.
|
||||
func (r *Route) GetHandler() http.Handler {
|
||||
return r.handler
|
||||
}
|
||||
|
||||
// Name -----------------------------------------------------------------------
|
||||
|
||||
// Name sets the name for the route, used to build URLs.
|
||||
// It is an error to call Name more than once on a route.
|
||||
func (r *Route) Name(name string) *Route {
|
||||
if r.name != "" {
|
||||
r.err = fmt.Errorf("mux: route already has name %q, can't set %q",
|
||||
r.name, name)
|
||||
}
|
||||
if r.err == nil {
|
||||
r.name = name
|
||||
r.namedRoutes[name] = r
|
||||
}
|
||||
return r
|
||||
}
|
||||
|
||||
// GetName returns the name for the route, if any.
|
||||
func (r *Route) GetName() string {
|
||||
return r.name
|
||||
}
|
||||
|
||||
// ----------------------------------------------------------------------------
|
||||
// Matchers
|
||||
// ----------------------------------------------------------------------------
|
||||
|
||||
// matcher types try to match a request.
|
||||
type matcher interface {
|
||||
Match(*http.Request, *RouteMatch) bool
|
||||
}
|
||||
|
||||
// addMatcher adds a matcher to the route.
|
||||
func (r *Route) addMatcher(m matcher) *Route {
|
||||
if r.err == nil {
|
||||
r.matchers = append(r.matchers, m)
|
||||
}
|
||||
return r
|
||||
}
|
||||
|
||||
// addRegexpMatcher adds a host or path matcher and builder to a route.
|
||||
func (r *Route) addRegexpMatcher(tpl string, typ regexpType) error {
|
||||
if r.err != nil {
|
||||
return r.err
|
||||
}
|
||||
if typ == regexpTypePath || typ == regexpTypePrefix {
|
||||
if len(tpl) > 0 && tpl[0] != '/' {
|
||||
return fmt.Errorf("mux: path must start with a slash, got %q", tpl)
|
||||
}
|
||||
if r.regexp.path != nil {
|
||||
tpl = strings.TrimRight(r.regexp.path.template, "/") + tpl
|
||||
}
|
||||
}
|
||||
rr, err := newRouteRegexp(tpl, typ, routeRegexpOptions{
|
||||
strictSlash: r.strictSlash,
|
||||
useEncodedPath: r.useEncodedPath,
|
||||
})
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
for _, q := range r.regexp.queries {
|
||||
if err = uniqueVars(rr.varsN, q.varsN); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
if typ == regexpTypeHost {
|
||||
if r.regexp.path != nil {
|
||||
if err = uniqueVars(rr.varsN, r.regexp.path.varsN); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
r.regexp.host = rr
|
||||
} else {
|
||||
if r.regexp.host != nil {
|
||||
if err = uniqueVars(rr.varsN, r.regexp.host.varsN); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
if typ == regexpTypeQuery {
|
||||
r.regexp.queries = append(r.regexp.queries, rr)
|
||||
} else {
|
||||
r.regexp.path = rr
|
||||
}
|
||||
}
|
||||
r.addMatcher(rr)
|
||||
return nil
|
||||
}
|
||||
|
||||
// Headers --------------------------------------------------------------------
|
||||
|
||||
// headerMatcher matches the request against header values.
|
||||
type headerMatcher map[string]string
|
||||
|
||||
func (m headerMatcher) Match(r *http.Request, match *RouteMatch) bool {
|
||||
return matchMapWithString(m, r.Header, true)
|
||||
}
|
||||
|
||||
// Headers adds a matcher for request header values.
|
||||
// It accepts a sequence of key/value pairs to be matched. For example:
|
||||
//
|
||||
// r := mux.NewRouter()
|
||||
// r.Headers("Content-Type", "application/json",
|
||||
// "X-Requested-With", "XMLHttpRequest")
|
||||
//
|
||||
// The above route will only match if both request header values match.
|
||||
// If the value is an empty string, it will match any value if the key is set.
|
||||
func (r *Route) Headers(pairs ...string) *Route {
|
||||
if r.err == nil {
|
||||
var headers map[string]string
|
||||
headers, r.err = mapFromPairsToString(pairs...)
|
||||
return r.addMatcher(headerMatcher(headers))
|
||||
}
|
||||
return r
|
||||
}
|
||||
|
||||
// headerRegexMatcher matches the request against the route given a regex for the header
|
||||
type headerRegexMatcher map[string]*regexp.Regexp
|
||||
|
||||
func (m headerRegexMatcher) Match(r *http.Request, match *RouteMatch) bool {
|
||||
return matchMapWithRegex(m, r.Header, true)
|
||||
}
|
||||
|
||||
// HeadersRegexp accepts a sequence of key/value pairs, where the value has regex
|
||||
// support. For example:
|
||||
//
|
||||
// r := mux.NewRouter()
|
||||
// r.HeadersRegexp("Content-Type", "application/(text|json)",
|
||||
// "X-Requested-With", "XMLHttpRequest")
|
||||
//
|
||||
// The above route will only match if both the request header matches both regular expressions.
|
||||
// If the value is an empty string, it will match any value if the key is set.
|
||||
// Use the start and end of string anchors (^ and $) to match an exact value.
|
||||
func (r *Route) HeadersRegexp(pairs ...string) *Route {
|
||||
if r.err == nil {
|
||||
var headers map[string]*regexp.Regexp
|
||||
headers, r.err = mapFromPairsToRegex(pairs...)
|
||||
return r.addMatcher(headerRegexMatcher(headers))
|
||||
}
|
||||
return r
|
||||
}
|
||||
|
||||
// Host -----------------------------------------------------------------------
|
||||
|
||||
// Host adds a matcher for the URL host.
|
||||
// It accepts a template with zero or more URL variables enclosed by {}.
|
||||
// Variables can define an optional regexp pattern to be matched:
|
||||
//
|
||||
// - {name} matches anything until the next dot.
|
||||
//
|
||||
// - {name:pattern} matches the given regexp pattern.
|
||||
//
|
||||
// For example:
|
||||
//
|
||||
// r := mux.NewRouter()
|
||||
// r.Host("www.example.com")
|
||||
// r.Host("{subdomain}.domain.com")
|
||||
// r.Host("{subdomain:[a-z]+}.domain.com")
|
||||
//
|
||||
// Variable names must be unique in a given route. They can be retrieved
|
||||
// calling mux.Vars(request).
|
||||
func (r *Route) Host(tpl string) *Route {
|
||||
r.err = r.addRegexpMatcher(tpl, regexpTypeHost)
|
||||
return r
|
||||
}
|
||||
|
||||
// MatcherFunc ----------------------------------------------------------------
|
||||
|
||||
// MatcherFunc is the function signature used by custom matchers.
|
||||
type MatcherFunc func(*http.Request, *RouteMatch) bool
|
||||
|
||||
// Match returns the match for a given request.
|
||||
func (m MatcherFunc) Match(r *http.Request, match *RouteMatch) bool {
|
||||
return m(r, match)
|
||||
}
|
||||
|
||||
// MatcherFunc adds a custom function to be used as request matcher.
|
||||
func (r *Route) MatcherFunc(f MatcherFunc) *Route {
|
||||
return r.addMatcher(f)
|
||||
}
|
||||
|
||||
// Methods --------------------------------------------------------------------
|
||||
|
||||
// methodMatcher matches the request against HTTP methods.
|
||||
type methodMatcher []string
|
||||
|
||||
func (m methodMatcher) Match(r *http.Request, match *RouteMatch) bool {
|
||||
return matchInArray(m, r.Method)
|
||||
}
|
||||
|
||||
// Methods adds a matcher for HTTP methods.
|
||||
// It accepts a sequence of one or more methods to be matched, e.g.:
|
||||
// "GET", "POST", "PUT".
|
||||
func (r *Route) Methods(methods ...string) *Route {
|
||||
for k, v := range methods {
|
||||
methods[k] = strings.ToUpper(v)
|
||||
}
|
||||
return r.addMatcher(methodMatcher(methods))
|
||||
}
|
||||
|
||||
// Path -----------------------------------------------------------------------
|
||||
|
||||
// Path adds a matcher for the URL path.
|
||||
// It accepts a template with zero or more URL variables enclosed by {}. The
|
||||
// template must start with a "/".
|
||||
// Variables can define an optional regexp pattern to be matched:
|
||||
//
|
||||
// - {name} matches anything until the next slash.
|
||||
//
|
||||
// - {name:pattern} matches the given regexp pattern.
|
||||
//
|
||||
// For example:
|
||||
//
|
||||
// r := mux.NewRouter()
|
||||
// r.Path("/products/").Handler(ProductsHandler)
|
||||
// r.Path("/products/{key}").Handler(ProductsHandler)
|
||||
// r.Path("/articles/{category}/{id:[0-9]+}").
|
||||
// Handler(ArticleHandler)
|
||||
//
|
||||
// Variable names must be unique in a given route. They can be retrieved
|
||||
// calling mux.Vars(request).
|
||||
func (r *Route) Path(tpl string) *Route {
|
||||
r.err = r.addRegexpMatcher(tpl, regexpTypePath)
|
||||
return r
|
||||
}
|
||||
|
||||
// PathPrefix -----------------------------------------------------------------
|
||||
|
||||
// PathPrefix adds a matcher for the URL path prefix. This matches if the given
|
||||
// template is a prefix of the full URL path. See Route.Path() for details on
|
||||
// the tpl argument.
|
||||
//
|
||||
// Note that it does not treat slashes specially ("/foobar/" will be matched by
|
||||
// the prefix "/foo") so you may want to use a trailing slash here.
|
||||
//
|
||||
// Also note that the setting of Router.StrictSlash() has no effect on routes
|
||||
// with a PathPrefix matcher.
|
||||
func (r *Route) PathPrefix(tpl string) *Route {
|
||||
r.err = r.addRegexpMatcher(tpl, regexpTypePrefix)
|
||||
return r
|
||||
}
|
||||
|
||||
// Query ----------------------------------------------------------------------
|
||||
|
||||
// Queries adds a matcher for URL query values.
|
||||
// It accepts a sequence of key/value pairs. Values may define variables.
|
||||
// For example:
|
||||
//
|
||||
// r := mux.NewRouter()
|
||||
// r.Queries("foo", "bar", "id", "{id:[0-9]+}")
|
||||
//
|
||||
// The above route will only match if the URL contains the defined queries
|
||||
// values, e.g.: ?foo=bar&id=42.
|
||||
//
|
||||
// If the value is an empty string, it will match any value if the key is set.
|
||||
//
|
||||
// Variables can define an optional regexp pattern to be matched:
|
||||
//
|
||||
// - {name} matches anything until the next slash.
|
||||
//
|
||||
// - {name:pattern} matches the given regexp pattern.
|
||||
func (r *Route) Queries(pairs ...string) *Route {
|
||||
length := len(pairs)
|
||||
if length%2 != 0 {
|
||||
r.err = fmt.Errorf(
|
||||
"mux: number of parameters must be multiple of 2, got %v", pairs)
|
||||
return nil
|
||||
}
|
||||
for i := 0; i < length; i += 2 {
|
||||
if r.err = r.addRegexpMatcher(pairs[i]+"="+pairs[i+1], regexpTypeQuery); r.err != nil {
|
||||
return r
|
||||
}
|
||||
}
|
||||
|
||||
return r
|
||||
}
|
||||
|
||||
// Schemes --------------------------------------------------------------------
|
||||
|
||||
// schemeMatcher matches the request against URL schemes.
|
||||
type schemeMatcher []string
|
||||
|
||||
func (m schemeMatcher) Match(r *http.Request, match *RouteMatch) bool {
|
||||
return matchInArray(m, r.URL.Scheme)
|
||||
}
|
||||
|
||||
// Schemes adds a matcher for URL schemes.
|
||||
// It accepts a sequence of schemes to be matched, e.g.: "http", "https".
|
||||
func (r *Route) Schemes(schemes ...string) *Route {
|
||||
for k, v := range schemes {
|
||||
schemes[k] = strings.ToLower(v)
|
||||
}
|
||||
if len(schemes) > 0 {
|
||||
r.buildScheme = schemes[0]
|
||||
}
|
||||
return r.addMatcher(schemeMatcher(schemes))
|
||||
}
|
||||
|
||||
// BuildVarsFunc --------------------------------------------------------------
|
||||
|
||||
// BuildVarsFunc is the function signature used by custom build variable
|
||||
// functions (which can modify route variables before a route's URL is built).
|
||||
type BuildVarsFunc func(map[string]string) map[string]string
|
||||
|
||||
// BuildVarsFunc adds a custom function to be used to modify build variables
|
||||
// before a route's URL is built.
|
||||
func (r *Route) BuildVarsFunc(f BuildVarsFunc) *Route {
|
||||
if r.buildVarsFunc != nil {
|
||||
// compose the old and new functions
|
||||
old := r.buildVarsFunc
|
||||
r.buildVarsFunc = func(m map[string]string) map[string]string {
|
||||
return f(old(m))
|
||||
}
|
||||
} else {
|
||||
r.buildVarsFunc = f
|
||||
}
|
||||
return r
|
||||
}
|
||||
|
||||
// Subrouter ------------------------------------------------------------------
|
||||
|
||||
// Subrouter creates a subrouter for the route.
|
||||
//
|
||||
// It will test the inner routes only if the parent route matched. For example:
|
||||
//
|
||||
// r := mux.NewRouter()
|
||||
// s := r.Host("www.example.com").Subrouter()
|
||||
// s.HandleFunc("/products/", ProductsHandler)
|
||||
// s.HandleFunc("/products/{key}", ProductHandler)
|
||||
// s.HandleFunc("/articles/{category}/{id:[0-9]+}"), ArticleHandler)
|
||||
//
|
||||
// Here, the routes registered in the subrouter won't be tested if the host
|
||||
// doesn't match.
|
||||
func (r *Route) Subrouter() *Router {
|
||||
// initialize a subrouter with a copy of the parent route's configuration
|
||||
router := &Router{routeConf: copyRouteConf(r.routeConf), namedRoutes: r.namedRoutes}
|
||||
r.addMatcher(router)
|
||||
return router
|
||||
}
|
||||
|
||||
// ----------------------------------------------------------------------------
|
||||
// URL building
|
||||
// ----------------------------------------------------------------------------
|
||||
|
||||
// URL builds a URL for the route.
|
||||
//
|
||||
// It accepts a sequence of key/value pairs for the route variables. For
|
||||
// example, given this route:
|
||||
//
|
||||
// r := mux.NewRouter()
|
||||
// r.HandleFunc("/articles/{category}/{id:[0-9]+}", ArticleHandler).
|
||||
// Name("article")
|
||||
//
|
||||
// ...a URL for it can be built using:
|
||||
//
|
||||
// url, err := r.Get("article").URL("category", "technology", "id", "42")
|
||||
//
|
||||
// ...which will return an url.URL with the following path:
|
||||
//
|
||||
// "/articles/technology/42"
|
||||
//
|
||||
// This also works for host variables:
|
||||
//
|
||||
// r := mux.NewRouter()
|
||||
// r.Host("{subdomain}.domain.com").
|
||||
// HandleFunc("/articles/{category}/{id:[0-9]+}", ArticleHandler).
|
||||
// Name("article")
|
||||
//
|
||||
// // url.String() will be "http://news.domain.com/articles/technology/42"
|
||||
// url, err := r.Get("article").URL("subdomain", "news",
|
||||
// "category", "technology",
|
||||
// "id", "42")
|
||||
//
|
||||
// All variables defined in the route are required, and their values must
|
||||
// conform to the corresponding patterns.
|
||||
func (r *Route) URL(pairs ...string) (*url.URL, error) {
|
||||
if r.err != nil {
|
||||
return nil, r.err
|
||||
}
|
||||
values, err := r.prepareVars(pairs...)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
var scheme, host, path string
|
||||
queries := make([]string, 0, len(r.regexp.queries))
|
||||
if r.regexp.host != nil {
|
||||
if host, err = r.regexp.host.url(values); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
scheme = "http"
|
||||
if r.buildScheme != "" {
|
||||
scheme = r.buildScheme
|
||||
}
|
||||
}
|
||||
if r.regexp.path != nil {
|
||||
if path, err = r.regexp.path.url(values); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
for _, q := range r.regexp.queries {
|
||||
var query string
|
||||
if query, err = q.url(values); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
queries = append(queries, query)
|
||||
}
|
||||
return &url.URL{
|
||||
Scheme: scheme,
|
||||
Host: host,
|
||||
Path: path,
|
||||
RawQuery: strings.Join(queries, "&"),
|
||||
}, nil
|
||||
}
|
||||
|
||||
// URLHost builds the host part of the URL for a route. See Route.URL().
|
||||
//
|
||||
// The route must have a host defined.
|
||||
func (r *Route) URLHost(pairs ...string) (*url.URL, error) {
|
||||
if r.err != nil {
|
||||
return nil, r.err
|
||||
}
|
||||
if r.regexp.host == nil {
|
||||
return nil, errors.New("mux: route doesn't have a host")
|
||||
}
|
||||
values, err := r.prepareVars(pairs...)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
host, err := r.regexp.host.url(values)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
u := &url.URL{
|
||||
Scheme: "http",
|
||||
Host: host,
|
||||
}
|
||||
if r.buildScheme != "" {
|
||||
u.Scheme = r.buildScheme
|
||||
}
|
||||
return u, nil
|
||||
}
|
||||
|
||||
// URLPath builds the path part of the URL for a route. See Route.URL().
|
||||
//
|
||||
// The route must have a path defined.
|
||||
func (r *Route) URLPath(pairs ...string) (*url.URL, error) {
|
||||
if r.err != nil {
|
||||
return nil, r.err
|
||||
}
|
||||
if r.regexp.path == nil {
|
||||
return nil, errors.New("mux: route doesn't have a path")
|
||||
}
|
||||
values, err := r.prepareVars(pairs...)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
path, err := r.regexp.path.url(values)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
return &url.URL{
|
||||
Path: path,
|
||||
}, nil
|
||||
}
|
||||
|
||||
// GetPathTemplate returns the template used to build the
|
||||
// route match.
|
||||
// This is useful for building simple REST API documentation and for instrumentation
|
||||
// against third-party services.
|
||||
// An error will be returned if the route does not define a path.
|
||||
func (r *Route) GetPathTemplate() (string, error) {
|
||||
if r.err != nil {
|
||||
return "", r.err
|
||||
}
|
||||
if r.regexp.path == nil {
|
||||
return "", errors.New("mux: route doesn't have a path")
|
||||
}
|
||||
return r.regexp.path.template, nil
|
||||
}
|
||||
|
||||
// GetPathRegexp returns the expanded regular expression used to match route path.
|
||||
// This is useful for building simple REST API documentation and for instrumentation
|
||||
// against third-party services.
|
||||
// An error will be returned if the route does not define a path.
|
||||
func (r *Route) GetPathRegexp() (string, error) {
|
||||
if r.err != nil {
|
||||
return "", r.err
|
||||
}
|
||||
if r.regexp.path == nil {
|
||||
return "", errors.New("mux: route does not have a path")
|
||||
}
|
||||
return r.regexp.path.regexp.String(), nil
|
||||
}
|
||||
|
||||
// GetQueriesRegexp returns the expanded regular expressions used to match the
|
||||
// route queries.
|
||||
// This is useful for building simple REST API documentation and for instrumentation
|
||||
// against third-party services.
|
||||
// An error will be returned if the route does not have queries.
|
||||
func (r *Route) GetQueriesRegexp() ([]string, error) {
|
||||
if r.err != nil {
|
||||
return nil, r.err
|
||||
}
|
||||
if r.regexp.queries == nil {
|
||||
return nil, errors.New("mux: route doesn't have queries")
|
||||
}
|
||||
var queries []string
|
||||
for _, query := range r.regexp.queries {
|
||||
queries = append(queries, query.regexp.String())
|
||||
}
|
||||
return queries, nil
|
||||
}
|
||||
|
||||
// GetQueriesTemplates returns the templates used to build the
|
||||
// query matching.
|
||||
// This is useful for building simple REST API documentation and for instrumentation
|
||||
// against third-party services.
|
||||
// An error will be returned if the route does not define queries.
|
||||
func (r *Route) GetQueriesTemplates() ([]string, error) {
|
||||
if r.err != nil {
|
||||
return nil, r.err
|
||||
}
|
||||
if r.regexp.queries == nil {
|
||||
return nil, errors.New("mux: route doesn't have queries")
|
||||
}
|
||||
var queries []string
|
||||
for _, query := range r.regexp.queries {
|
||||
queries = append(queries, query.template)
|
||||
}
|
||||
return queries, nil
|
||||
}
|
||||
|
||||
// GetMethods returns the methods the route matches against
|
||||
// This is useful for building simple REST API documentation and for instrumentation
|
||||
// against third-party services.
|
||||
// An error will be returned if route does not have methods.
|
||||
func (r *Route) GetMethods() ([]string, error) {
|
||||
if r.err != nil {
|
||||
return nil, r.err
|
||||
}
|
||||
for _, m := range r.matchers {
|
||||
if methods, ok := m.(methodMatcher); ok {
|
||||
return []string(methods), nil
|
||||
}
|
||||
}
|
||||
return nil, errors.New("mux: route doesn't have methods")
|
||||
}
|
||||
|
||||
// GetHostTemplate returns the template used to build the
|
||||
// route match.
|
||||
// This is useful for building simple REST API documentation and for instrumentation
|
||||
// against third-party services.
|
||||
// An error will be returned if the route does not define a host.
|
||||
func (r *Route) GetHostTemplate() (string, error) {
|
||||
if r.err != nil {
|
||||
return "", r.err
|
||||
}
|
||||
if r.regexp.host == nil {
|
||||
return "", errors.New("mux: route doesn't have a host")
|
||||
}
|
||||
return r.regexp.host.template, nil
|
||||
}
|
||||
|
||||
// prepareVars converts the route variable pairs into a map. If the route has a
|
||||
// BuildVarsFunc, it is invoked.
|
||||
func (r *Route) prepareVars(pairs ...string) (map[string]string, error) {
|
||||
m, err := mapFromPairsToString(pairs...)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
return r.buildVars(m), nil
|
||||
}
|
||||
|
||||
func (r *Route) buildVars(m map[string]string) map[string]string {
|
||||
if r.buildVarsFunc != nil {
|
||||
m = r.buildVarsFunc(m)
|
||||
}
|
||||
return m
|
||||
}
|
@ -0,0 +1,19 @@
|
||||
// Copyright 2012 The Gorilla Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package mux
|
||||
|
||||
import "net/http"
|
||||
|
||||
// SetURLVars sets the URL variables for the given request, to be accessed via
|
||||
// mux.Vars for testing route behaviour. Arguments are not modified, a shallow
|
||||
// copy is returned.
|
||||
//
|
||||
// This API should only be used for testing purposes; it provides a way to
|
||||
// inject variables into the request context. Alternatively, URL variables
|
||||
// can be set by making a route that captures the required variables,
|
||||
// starting a server and sending the request to that server.
|
||||
func SetURLVars(r *http.Request, val map[string]string) *http.Request {
|
||||
return setVars(r, val)
|
||||
}
|
@ -0,0 +1,25 @@
|
||||
# Compiled Object files, Static and Dynamic libs (Shared Objects)
|
||||
*.o
|
||||
*.a
|
||||
*.so
|
||||
|
||||
# Folders
|
||||
_obj
|
||||
_test
|
||||
|
||||
# Architecture specific extensions/prefixes
|
||||
*.[568vq]
|
||||
[568vq].out
|
||||
|
||||
*.cgo1.go
|
||||
*.cgo2.c
|
||||
_cgo_defun.c
|
||||
_cgo_gotypes.go
|
||||
_cgo_export.*
|
||||
|
||||
_testmain.go
|
||||
|
||||
*.exe
|
||||
|
||||
.idea/
|
||||
*.iml
|
@ -0,0 +1,9 @@
|
||||
# This is the official list of Gorilla WebSocket authors for copyright
|
||||
# purposes.
|
||||
#
|
||||
# Please keep the list sorted.
|
||||
|
||||
Gary Burd <gary@beagledreams.com>
|
||||
Google LLC (https://opensource.google.com/)
|
||||
Joachim Bauch <mail@joachim-bauch.de>
|
||||
|
@ -0,0 +1,22 @@
|
||||
Copyright (c) 2013 The Gorilla WebSocket Authors. All rights reserved.
|
||||
|
||||
Redistribution and use in source and binary forms, with or without
|
||||
modification, are permitted provided that the following conditions are met:
|
||||
|
||||
Redistributions of source code must retain the above copyright notice, this
|
||||
list of conditions and the following disclaimer.
|
||||
|
||||
Redistributions in binary form must reproduce the above copyright notice,
|
||||
this list of conditions and the following disclaimer in the documentation
|
||||
and/or other materials provided with the distribution.
|
||||
|
||||
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
|
||||
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
||||
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
||||
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
|
||||
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
||||
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
||||
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
||||
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
||||
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
@ -0,0 +1,64 @@
|
||||
# Gorilla WebSocket
|
||||
|
||||
[![GoDoc](https://godoc.org/github.com/gorilla/websocket?status.svg)](https://godoc.org/github.com/gorilla/websocket)
|
||||
[![CircleCI](https://circleci.com/gh/gorilla/websocket.svg?style=svg)](https://circleci.com/gh/gorilla/websocket)
|
||||
|
||||
Gorilla WebSocket is a [Go](http://golang.org/) implementation of the
|
||||
[WebSocket](http://www.rfc-editor.org/rfc/rfc6455.txt) protocol.
|
||||
|
||||
### Documentation
|
||||
|
||||
* [API Reference](http://godoc.org/github.com/gorilla/websocket)
|
||||
* [Chat example](https://github.com/gorilla/websocket/tree/master/examples/chat)
|
||||
* [Command example](https://github.com/gorilla/websocket/tree/master/examples/command)
|
||||
* [Client and server example](https://github.com/gorilla/websocket/tree/master/examples/echo)
|
||||
* [File watch example](https://github.com/gorilla/websocket/tree/master/examples/filewatch)
|
||||
|
||||
### Status
|
||||
|
||||
The Gorilla WebSocket package provides a complete and tested implementation of
|
||||
the [WebSocket](http://www.rfc-editor.org/rfc/rfc6455.txt) protocol. The
|
||||
package API is stable.
|
||||
|
||||
### Installation
|
||||
|
||||
go get github.com/gorilla/websocket
|
||||
|
||||
### Protocol Compliance
|
||||
|
||||
The Gorilla WebSocket package passes the server tests in the [Autobahn Test
|
||||
Suite](https://github.com/crossbario/autobahn-testsuite) using the application in the [examples/autobahn
|
||||
subdirectory](https://github.com/gorilla/websocket/tree/master/examples/autobahn).
|
||||
|
||||
### Gorilla WebSocket compared with other packages
|
||||
|
||||
<table>
|
||||
<tr>
|
||||
<th></th>
|
||||
<th><a href="http://godoc.org/github.com/gorilla/websocket">github.com/gorilla</a></th>
|
||||
<th><a href="http://godoc.org/golang.org/x/net/websocket">golang.org/x/net</a></th>
|
||||
</tr>
|
||||
<tr>
|
||||
<tr><td colspan="3"><a href="http://tools.ietf.org/html/rfc6455">RFC 6455</a> Features</td></tr>
|
||||
<tr><td>Passes <a href="https://github.com/crossbario/autobahn-testsuite">Autobahn Test Suite</a></td><td><a href="https://github.com/gorilla/websocket/tree/master/examples/autobahn">Yes</a></td><td>No</td></tr>
|
||||
<tr><td>Receive <a href="https://tools.ietf.org/html/rfc6455#section-5.4">fragmented</a> message<td>Yes</td><td><a href="https://code.google.com/p/go/issues/detail?id=7632">No</a>, see note 1</td></tr>
|
||||
<tr><td>Send <a href="https://tools.ietf.org/html/rfc6455#section-5.5.1">close</a> message</td><td><a href="http://godoc.org/github.com/gorilla/websocket#hdr-Control_Messages">Yes</a></td><td><a href="https://code.google.com/p/go/issues/detail?id=4588">No</a></td></tr>
|
||||
<tr><td>Send <a href="https://tools.ietf.org/html/rfc6455#section-5.5.2">pings</a> and receive <a href="https://tools.ietf.org/html/rfc6455#section-5.5.3">pongs</a></td><td><a href="http://godoc.org/github.com/gorilla/websocket#hdr-Control_Messages">Yes</a></td><td>No</td></tr>
|
||||
<tr><td>Get the <a href="https://tools.ietf.org/html/rfc6455#section-5.6">type</a> of a received data message</td><td>Yes</td><td>Yes, see note 2</td></tr>
|
||||
<tr><td colspan="3">Other Features</tr></td>
|
||||
<tr><td><a href="https://tools.ietf.org/html/rfc7692">Compression Extensions</a></td><td>Experimental</td><td>No</td></tr>
|
||||
<tr><td>Read message using io.Reader</td><td><a href="http://godoc.org/github.com/gorilla/websocket#Conn.NextReader">Yes</a></td><td>No, see note 3</td></tr>
|
||||
<tr><td>Write message using io.WriteCloser</td><td><a href="http://godoc.org/github.com/gorilla/websocket#Conn.NextWriter">Yes</a></td><td>No, see note 3</td></tr>
|
||||
</table>
|
||||
|
||||
Notes:
|
||||
|
||||
1. Large messages are fragmented in [Chrome's new WebSocket implementation](http://www.ietf.org/mail-archive/web/hybi/current/msg10503.html).
|
||||
2. The application can get the type of a received data message by implementing
|
||||
a [Codec marshal](http://godoc.org/golang.org/x/net/websocket#Codec.Marshal)
|
||||
function.
|
||||
3. The go.net io.Reader and io.Writer operate across WebSocket frame boundaries.
|
||||
Read returns when the input buffer is full or a frame boundary is
|
||||
encountered. Each call to Write sends a single frame message. The Gorilla
|
||||
io.Reader and io.WriteCloser operate on a single WebSocket message.
|
||||
|
@ -0,0 +1,395 @@
|
||||
// Copyright 2013 The Gorilla WebSocket Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package websocket
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"context"
|
||||
"crypto/tls"
|
||||
"errors"
|
||||
"io"
|
||||
"io/ioutil"
|
||||
"net"
|
||||
"net/http"
|
||||
"net/http/httptrace"
|
||||
"net/url"
|
||||
"strings"
|
||||
"time"
|
||||
)
|
||||
|
||||
// ErrBadHandshake is returned when the server response to opening handshake is
|
||||
// invalid.
|
||||
var ErrBadHandshake = errors.New("websocket: bad handshake")
|
||||
|
||||
var errInvalidCompression = errors.New("websocket: invalid compression negotiation")
|
||||
|
||||
// NewClient creates a new client connection using the given net connection.
|
||||
// The URL u specifies the host and request URI. Use requestHeader to specify
|
||||
// the origin (Origin), subprotocols (Sec-WebSocket-Protocol) and cookies
|
||||
// (Cookie). Use the response.Header to get the selected subprotocol
|
||||
// (Sec-WebSocket-Protocol) and cookies (Set-Cookie).
|
||||
//
|
||||
// If the WebSocket handshake fails, ErrBadHandshake is returned along with a
|
||||
// non-nil *http.Response so that callers can handle redirects, authentication,
|
||||
// etc.
|
||||
//
|
||||
// Deprecated: Use Dialer instead.
|
||||
func NewClient(netConn net.Conn, u *url.URL, requestHeader http.Header, readBufSize, writeBufSize int) (c *Conn, response *http.Response, err error) {
|
||||
d := Dialer{
|
||||
ReadBufferSize: readBufSize,
|
||||
WriteBufferSize: writeBufSize,
|
||||
NetDial: func(net, addr string) (net.Conn, error) {
|
||||
return netConn, nil
|
||||
},
|
||||
}
|
||||
return d.Dial(u.String(), requestHeader)
|
||||
}
|
||||
|
||||
// A Dialer contains options for connecting to WebSocket server.
|
||||
type Dialer struct {
|
||||
// NetDial specifies the dial function for creating TCP connections. If
|
||||
// NetDial is nil, net.Dial is used.
|
||||
NetDial func(network, addr string) (net.Conn, error)
|
||||
|
||||
// NetDialContext specifies the dial function for creating TCP connections. If
|
||||
// NetDialContext is nil, net.DialContext is used.
|
||||
NetDialContext func(ctx context.Context, network, addr string) (net.Conn, error)
|
||||
|
||||
// Proxy specifies a function to return a proxy for a given
|
||||
// Request. If the function returns a non-nil error, the
|
||||
// request is aborted with the provided error.
|
||||
// If Proxy is nil or returns a nil *URL, no proxy is used.
|
||||
Proxy func(*http.Request) (*url.URL, error)
|
||||
|
||||
// TLSClientConfig specifies the TLS configuration to use with tls.Client.
|
||||
// If nil, the default configuration is used.
|
||||
TLSClientConfig *tls.Config
|
||||
|
||||
// HandshakeTimeout specifies the duration for the handshake to complete.
|
||||
HandshakeTimeout time.Duration
|
||||
|
||||
// ReadBufferSize and WriteBufferSize specify I/O buffer sizes in bytes. If a buffer
|
||||
// size is zero, then a useful default size is used. The I/O buffer sizes
|
||||
// do not limit the size of the messages that can be sent or received.
|
||||
ReadBufferSize, WriteBufferSize int
|
||||
|
||||
// WriteBufferPool is a pool of buffers for write operations. If the value
|
||||
// is not set, then write buffers are allocated to the connection for the
|
||||
// lifetime of the connection.
|
||||
//
|
||||
// A pool is most useful when the application has a modest volume of writes
|
||||
// across a large number of connections.
|
||||
//
|
||||
// Applications should use a single pool for each unique value of
|
||||
// WriteBufferSize.
|
||||
WriteBufferPool BufferPool
|
||||
|
||||
// Subprotocols specifies the client's requested subprotocols.
|
||||
Subprotocols []string
|
||||
|
||||
// EnableCompression specifies if the client should attempt to negotiate
|
||||
// per message compression (RFC 7692). Setting this value to true does not
|
||||
// guarantee that compression will be supported. Currently only "no context
|
||||
// takeover" modes are supported.
|
||||
EnableCompression bool
|
||||
|
||||
// Jar specifies the cookie jar.
|
||||
// If Jar is nil, cookies are not sent in requests and ignored
|
||||
// in responses.
|
||||
Jar http.CookieJar
|
||||
}
|
||||
|
||||
// Dial creates a new client connection by calling DialContext with a background context.
|
||||
func (d *Dialer) Dial(urlStr string, requestHeader http.Header) (*Conn, *http.Response, error) {
|
||||
return d.DialContext(context.Background(), urlStr, requestHeader)
|
||||
}
|
||||
|
||||
var errMalformedURL = errors.New("malformed ws or wss URL")
|
||||
|
||||
func hostPortNoPort(u *url.URL) (hostPort, hostNoPort string) {
|
||||
hostPort = u.Host
|
||||
hostNoPort = u.Host
|
||||
if i := strings.LastIndex(u.Host, ":"); i > strings.LastIndex(u.Host, "]") {
|
||||
hostNoPort = hostNoPort[:i]
|
||||
} else {
|
||||
switch u.Scheme {
|
||||
case "wss":
|
||||
hostPort += ":443"
|
||||
case "https":
|
||||
hostPort += ":443"
|
||||
default:
|
||||
hostPort += ":80"
|
||||
}
|
||||
}
|
||||
return hostPort, hostNoPort
|
||||
}
|
||||
|
||||
// DefaultDialer is a dialer with all fields set to the default values.
|
||||
var DefaultDialer = &Dialer{
|
||||
Proxy: http.ProxyFromEnvironment,
|
||||
HandshakeTimeout: 45 * time.Second,
|
||||
}
|
||||
|
||||
// nilDialer is dialer to use when receiver is nil.
|
||||
var nilDialer = *DefaultDialer
|
||||
|
||||
// DialContext creates a new client connection. Use requestHeader to specify the
|
||||
// origin (Origin), subprotocols (Sec-WebSocket-Protocol) and cookies (Cookie).
|
||||
// Use the response.Header to get the selected subprotocol
|
||||
// (Sec-WebSocket-Protocol) and cookies (Set-Cookie).
|
||||
//
|
||||
// The context will be used in the request and in the Dialer.
|
||||
//
|
||||
// If the WebSocket handshake fails, ErrBadHandshake is returned along with a
|
||||
// non-nil *http.Response so that callers can handle redirects, authentication,
|
||||
// etcetera. The response body may not contain the entire response and does not
|
||||
// need to be closed by the application.
|
||||
func (d *Dialer) DialContext(ctx context.Context, urlStr string, requestHeader http.Header) (*Conn, *http.Response, error) {
|
||||
if d == nil {
|
||||
d = &nilDialer
|
||||
}
|
||||
|
||||
challengeKey, err := generateChallengeKey()
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
|
||||
u, err := url.Parse(urlStr)
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
|
||||
switch u.Scheme {
|
||||
case "ws":
|
||||
u.Scheme = "http"
|
||||
case "wss":
|
||||
u.Scheme = "https"
|
||||
default:
|
||||
return nil, nil, errMalformedURL
|
||||
}
|
||||
|
||||
if u.User != nil {
|
||||
// User name and password are not allowed in websocket URIs.
|
||||
return nil, nil, errMalformedURL
|
||||
}
|
||||
|
||||
req := &http.Request{
|
||||
Method: "GET",
|
||||
URL: u,
|
||||
Proto: "HTTP/1.1",
|
||||
ProtoMajor: 1,
|
||||
ProtoMinor: 1,
|
||||
Header: make(http.Header),
|
||||
Host: u.Host,
|
||||
}
|
||||
req = req.WithContext(ctx)
|
||||
|
||||
// Set the cookies present in the cookie jar of the dialer
|
||||
if d.Jar != nil {
|
||||
for _, cookie := range d.Jar.Cookies(u) {
|
||||
req.AddCookie(cookie)
|
||||
}
|
||||
}
|
||||
|
||||
// Set the request headers using the capitalization for names and values in
|
||||
// RFC examples. Although the capitalization shouldn't matter, there are
|
||||
// servers that depend on it. The Header.Set method is not used because the
|
||||
// method canonicalizes the header names.
|
||||
req.Header["Upgrade"] = []string{"websocket"}
|
||||
req.Header["Connection"] = []string{"Upgrade"}
|
||||
req.Header["Sec-WebSocket-Key"] = []string{challengeKey}
|
||||
req.Header["Sec-WebSocket-Version"] = []string{"13"}
|
||||
if len(d.Subprotocols) > 0 {
|
||||
req.Header["Sec-WebSocket-Protocol"] = []string{strings.Join(d.Subprotocols, ", ")}
|
||||
}
|
||||
for k, vs := range requestHeader {
|
||||
switch {
|
||||
case k == "Host":
|
||||
if len(vs) > 0 {
|
||||
req.Host = vs[0]
|
||||
}
|
||||
case k == "Upgrade" ||
|
||||
k == "Connection" ||
|
||||
k == "Sec-Websocket-Key" ||
|
||||
k == "Sec-Websocket-Version" ||
|
||||
k == "Sec-Websocket-Extensions" ||
|
||||
(k == "Sec-Websocket-Protocol" && len(d.Subprotocols) > 0):
|
||||
return nil, nil, errors.New("websocket: duplicate header not allowed: " + k)
|
||||
case k == "Sec-Websocket-Protocol":
|
||||
req.Header["Sec-WebSocket-Protocol"] = vs
|
||||
default:
|
||||
req.Header[k] = vs
|
||||
}
|
||||
}
|
||||
|
||||
if d.EnableCompression {
|
||||
req.Header["Sec-WebSocket-Extensions"] = []string{"permessage-deflate; server_no_context_takeover; client_no_context_takeover"}
|
||||
}
|
||||
|
||||
if d.HandshakeTimeout != 0 {
|
||||
var cancel func()
|
||||
ctx, cancel = context.WithTimeout(ctx, d.HandshakeTimeout)
|
||||
defer cancel()
|
||||
}
|
||||
|
||||
// Get network dial function.
|
||||
var netDial func(network, add string) (net.Conn, error)
|
||||
|
||||
if d.NetDialContext != nil {
|
||||
netDial = func(network, addr string) (net.Conn, error) {
|
||||
return d.NetDialContext(ctx, network, addr)
|
||||
}
|
||||
} else if d.NetDial != nil {
|
||||
netDial = d.NetDial
|
||||
} else {
|
||||
netDialer := &net.Dialer{}
|
||||
netDial = func(network, addr string) (net.Conn, error) {
|
||||
return netDialer.DialContext(ctx, network, addr)
|
||||
}
|
||||
}
|
||||
|
||||
// If needed, wrap the dial function to set the connection deadline.
|
||||
if deadline, ok := ctx.Deadline(); ok {
|
||||
forwardDial := netDial
|
||||
netDial = func(network, addr string) (net.Conn, error) {
|
||||
c, err := forwardDial(network, addr)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
err = c.SetDeadline(deadline)
|
||||
if err != nil {
|
||||
c.Close()
|
||||
return nil, err
|
||||
}
|
||||
return c, nil
|
||||
}
|
||||
}
|
||||
|
||||
// If needed, wrap the dial function to connect through a proxy.
|
||||
if d.Proxy != nil {
|
||||
proxyURL, err := d.Proxy(req)
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
if proxyURL != nil {
|
||||
dialer, err := proxy_FromURL(proxyURL, netDialerFunc(netDial))
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
netDial = dialer.Dial
|
||||
}
|
||||
}
|
||||
|
||||
hostPort, hostNoPort := hostPortNoPort(u)
|
||||
trace := httptrace.ContextClientTrace(ctx)
|
||||
if trace != nil && trace.GetConn != nil {
|
||||
trace.GetConn(hostPort)
|
||||
}
|
||||
|
||||
netConn, err := netDial("tcp", hostPort)
|
||||
if trace != nil && trace.GotConn != nil {
|
||||
trace.GotConn(httptrace.GotConnInfo{
|
||||
Conn: netConn,
|
||||
})
|
||||
}
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
|
||||
defer func() {
|
||||
if netConn != nil {
|
||||
netConn.Close()
|
||||
}
|
||||
}()
|
||||
|
||||
if u.Scheme == "https" {
|
||||
cfg := cloneTLSConfig(d.TLSClientConfig)
|
||||
if cfg.ServerName == "" {
|
||||
cfg.ServerName = hostNoPort
|
||||
}
|
||||
tlsConn := tls.Client(netConn, cfg)
|
||||
netConn = tlsConn
|
||||
|
||||
var err error
|
||||
if trace != nil {
|
||||
err = doHandshakeWithTrace(trace, tlsConn, cfg)
|
||||
} else {
|
||||
err = doHandshake(tlsConn, cfg)
|
||||
}
|
||||
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
}
|
||||
|
||||
conn := newConn(netConn, false, d.ReadBufferSize, d.WriteBufferSize, d.WriteBufferPool, nil, nil)
|
||||
|
||||
if err := req.Write(netConn); err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
|
||||
if trace != nil && trace.GotFirstResponseByte != nil {
|
||||
if peek, err := conn.br.Peek(1); err == nil && len(peek) == 1 {
|
||||
trace.GotFirstResponseByte()
|
||||
}
|
||||
}
|
||||
|
||||
resp, err := http.ReadResponse(conn.br, req)
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
|
||||
if d.Jar != nil {
|
||||
if rc := resp.Cookies(); len(rc) > 0 {
|
||||
d.Jar.SetCookies(u, rc)
|
||||
}
|
||||
}
|
||||
|
||||
if resp.StatusCode != 101 ||
|
||||
!strings.EqualFold(resp.Header.Get("Upgrade"), "websocket") ||
|
||||
!strings.EqualFold(resp.Header.Get("Connection"), "upgrade") ||
|
||||
resp.Header.Get("Sec-Websocket-Accept") != computeAcceptKey(challengeKey) {
|
||||
// Before closing the network connection on return from this
|
||||
// function, slurp up some of the response to aid application
|
||||
// debugging.
|
||||
buf := make([]byte, 1024)
|
||||
n, _ := io.ReadFull(resp.Body, buf)
|
||||
resp.Body = ioutil.NopCloser(bytes.NewReader(buf[:n]))
|
||||
return nil, resp, ErrBadHandshake
|
||||
}
|
||||
|
||||
for _, ext := range parseExtensions(resp.Header) {
|
||||
if ext[""] != "permessage-deflate" {
|
||||
continue
|
||||
}
|
||||
_, snct := ext["server_no_context_takeover"]
|
||||
_, cnct := ext["client_no_context_takeover"]
|
||||
if !snct || !cnct {
|
||||
return nil, resp, errInvalidCompression
|
||||
}
|
||||
conn.newCompressionWriter = compressNoContextTakeover
|
||||
conn.newDecompressionReader = decompressNoContextTakeover
|
||||
break
|
||||
}
|
||||
|
||||
resp.Body = ioutil.NopCloser(bytes.NewReader([]byte{}))
|
||||
conn.subprotocol = resp.Header.Get("Sec-Websocket-Protocol")
|
||||
|
||||
netConn.SetDeadline(time.Time{})
|
||||
netConn = nil // to avoid close in defer.
|
||||
return conn, resp, nil
|
||||
}
|
||||
|
||||
func doHandshake(tlsConn *tls.Conn, cfg *tls.Config) error {
|
||||
if err := tlsConn.Handshake(); err != nil {
|
||||
return err
|
||||
}
|
||||
if !cfg.InsecureSkipVerify {
|
||||
if err := tlsConn.VerifyHostname(cfg.ServerName); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
return nil
|
||||
}
|
@ -0,0 +1,16 @@
|
||||
// Copyright 2013 The Gorilla WebSocket Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
// +build go1.8
|
||||
|
||||
package websocket
|
||||
|
||||
import "crypto/tls"
|
||||
|
||||
func cloneTLSConfig(cfg *tls.Config) *tls.Config {
|
||||
if cfg == nil {
|
||||
return &tls.Config{}
|
||||
}
|
||||
return cfg.Clone()
|
||||
}
|
@ -0,0 +1,38 @@
|
||||
// Copyright 2013 The Gorilla WebSocket Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
// +build !go1.8
|
||||
|
||||
package websocket
|
||||
|
||||
import "crypto/tls"
|
||||
|
||||
// cloneTLSConfig clones all public fields except the fields
|
||||
// SessionTicketsDisabled and SessionTicketKey. This avoids copying the
|
||||
// sync.Mutex in the sync.Once and makes it safe to call cloneTLSConfig on a
|
||||
// config in active use.
|
||||
func cloneTLSConfig(cfg *tls.Config) *tls.Config {
|
||||
if cfg == nil {
|
||||
return &tls.Config{}
|
||||
}
|
||||
return &tls.Config{
|
||||
Rand: cfg.Rand,
|
||||
Time: cfg.Time,
|
||||
Certificates: cfg.Certificates,
|
||||
NameToCertificate: cfg.NameToCertificate,
|
||||
GetCertificate: cfg.GetCertificate,
|
||||
RootCAs: cfg.RootCAs,
|
||||
NextProtos: cfg.NextProtos,
|
||||
ServerName: cfg.ServerName,
|
||||
ClientAuth: cfg.ClientAuth,
|
||||
ClientCAs: cfg.ClientCAs,
|
||||
InsecureSkipVerify: cfg.InsecureSkipVerify,
|
||||
CipherSuites: cfg.CipherSuites,
|
||||
PreferServerCipherSuites: cfg.PreferServerCipherSuites,
|
||||
ClientSessionCache: cfg.ClientSessionCache,
|
||||
MinVersion: cfg.MinVersion,
|
||||
MaxVersion: cfg.MaxVersion,
|
||||
CurvePreferences: cfg.CurvePreferences,
|
||||
}
|
||||
}
|
@ -0,0 +1,148 @@
|
||||
// Copyright 2017 The Gorilla WebSocket Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package websocket
|
||||
|
||||
import (
|
||||
"compress/flate"
|
||||
"errors"
|
||||
"io"
|
||||
"strings"
|
||||
"sync"
|
||||
)
|
||||
|
||||
const (
|
||||
minCompressionLevel = -2 // flate.HuffmanOnly not defined in Go < 1.6
|
||||
maxCompressionLevel = flate.BestCompression
|
||||
defaultCompressionLevel = 1
|
||||
)
|
||||
|
||||
var (
|
||||
flateWriterPools [maxCompressionLevel - minCompressionLevel + 1]sync.Pool
|
||||
flateReaderPool = sync.Pool{New: func() interface{} {
|
||||
return flate.NewReader(nil)
|
||||
}}
|
||||
)
|
||||
|
||||
func decompressNoContextTakeover(r io.Reader) io.ReadCloser {
|
||||
const tail =
|
||||
// Add four bytes as specified in RFC
|
||||
"\x00\x00\xff\xff" +
|
||||
// Add final block to squelch unexpected EOF error from flate reader.
|
||||
"\x01\x00\x00\xff\xff"
|
||||
|
||||
fr, _ := flateReaderPool.Get().(io.ReadCloser)
|
||||
fr.(flate.Resetter).Reset(io.MultiReader(r, strings.NewReader(tail)), nil)
|
||||
return &flateReadWrapper{fr}
|
||||
}
|
||||
|
||||
func isValidCompressionLevel(level int) bool {
|
||||
return minCompressionLevel <= level && level <= maxCompressionLevel
|
||||
}
|
||||
|
||||
func compressNoContextTakeover(w io.WriteCloser, level int) io.WriteCloser {
|
||||
p := &flateWriterPools[level-minCompressionLevel]
|
||||
tw := &truncWriter{w: w}
|
||||
fw, _ := p.Get().(*flate.Writer)
|
||||
if fw == nil {
|
||||
fw, _ = flate.NewWriter(tw, level)
|
||||
} else {
|
||||
fw.Reset(tw)
|
||||
}
|
||||
return &flateWriteWrapper{fw: fw, tw: tw, p: p}
|
||||
}
|
||||
|
||||
// truncWriter is an io.Writer that writes all but the last four bytes of the
|
||||
// stream to another io.Writer.
|
||||
type truncWriter struct {
|
||||
w io.WriteCloser
|
||||
n int
|
||||
p [4]byte
|
||||
}
|
||||
|
||||
func (w *truncWriter) Write(p []byte) (int, error) {
|
||||
n := 0
|
||||
|
||||
// fill buffer first for simplicity.
|
||||
if w.n < len(w.p) {
|
||||
n = copy(w.p[w.n:], p)
|
||||
p = p[n:]
|
||||
w.n += n
|
||||
if len(p) == 0 {
|
||||
return n, nil
|
||||
}
|
||||
}
|
||||
|
||||
m := len(p)
|
||||
if m > len(w.p) {
|
||||
m = len(w.p)
|
||||
}
|
||||
|
||||
if nn, err := w.w.Write(w.p[:m]); err != nil {
|
||||
return n + nn, err
|
||||
}
|
||||
|
||||
copy(w.p[:], w.p[m:])
|
||||
copy(w.p[len(w.p)-m:], p[len(p)-m:])
|
||||
nn, err := w.w.Write(p[:len(p)-m])
|
||||
return n + nn, err
|
||||
}
|
||||
|
||||
type flateWriteWrapper struct {
|
||||
fw *flate.Writer
|
||||
tw *truncWriter
|
||||
p *sync.Pool
|
||||
}
|
||||
|
||||
func (w *flateWriteWrapper) Write(p []byte) (int, error) {
|
||||
if w.fw == nil {
|
||||
return 0, errWriteClosed
|
||||
}
|
||||
return w.fw.Write(p)
|
||||
}
|
||||
|
||||
func (w *flateWriteWrapper) Close() error {
|
||||
if w.fw == nil {
|
||||
return errWriteClosed
|
||||
}
|
||||
err1 := w.fw.Flush()
|
||||
w.p.Put(w.fw)
|
||||
w.fw = nil
|
||||
if w.tw.p != [4]byte{0, 0, 0xff, 0xff} {
|
||||
return errors.New("websocket: internal error, unexpected bytes at end of flate stream")
|
||||
}
|
||||
err2 := w.tw.w.Close()
|
||||
if err1 != nil {
|
||||
return err1
|
||||
}
|
||||
return err2
|
||||
}
|
||||
|
||||
type flateReadWrapper struct {
|
||||
fr io.ReadCloser
|
||||
}
|
||||
|
||||
func (r *flateReadWrapper) Read(p []byte) (int, error) {
|
||||
if r.fr == nil {
|
||||
return 0, io.ErrClosedPipe
|
||||
}
|
||||
n, err := r.fr.Read(p)
|
||||
if err == io.EOF {
|
||||
// Preemptively place the reader back in the pool. This helps with
|
||||
// scenarios where the application does not call NextReader() soon after
|
||||
// this final read.
|
||||
r.Close()
|
||||
}
|
||||
return n, err
|
||||
}
|
||||
|
||||
func (r *flateReadWrapper) Close() error {
|
||||
if r.fr == nil {
|
||||
return io.ErrClosedPipe
|
||||
}
|
||||
err := r.fr.Close()
|
||||
flateReaderPool.Put(r.fr)
|
||||
r.fr = nil
|
||||
return err
|
||||
}
|
File diff suppressed because it is too large
Load Diff
@ -0,0 +1,15 @@
|
||||
// Copyright 2016 The Gorilla WebSocket Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
// +build go1.8
|
||||
|
||||
package websocket
|
||||
|
||||
import "net"
|
||||
|
||||
func (c *Conn) writeBufs(bufs ...[]byte) error {
|
||||
b := net.Buffers(bufs)
|
||||
_, err := b.WriteTo(c.conn)
|
||||
return err
|
||||
}
|
@ -0,0 +1,18 @@
|
||||
// Copyright 2016 The Gorilla WebSocket Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
// +build !go1.8
|
||||
|
||||
package websocket
|
||||
|
||||
func (c *Conn) writeBufs(bufs ...[]byte) error {
|
||||
for _, buf := range bufs {
|
||||
if len(buf) > 0 {
|
||||
if _, err := c.conn.Write(buf); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
}
|
||||
return nil
|
||||
}
|
@ -0,0 +1,227 @@
|
||||
// Copyright 2013 The Gorilla WebSocket Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
// Package websocket implements the WebSocket protocol defined in RFC 6455.
|
||||
//
|
||||
// Overview
|
||||
//
|
||||
// The Conn type represents a WebSocket connection. A server application calls
|
||||
// the Upgrader.Upgrade method from an HTTP request handler to get a *Conn:
|
||||
//
|
||||
// var upgrader = websocket.Upgrader{
|
||||
// ReadBufferSize: 1024,
|
||||
// WriteBufferSize: 1024,
|
||||
// }
|
||||
//
|
||||
// func handler(w http.ResponseWriter, r *http.Request) {
|
||||
// conn, err := upgrader.Upgrade(w, r, nil)
|
||||
// if err != nil {
|
||||
// log.Println(err)
|
||||
// return
|
||||
// }
|
||||
// ... Use conn to send and receive messages.
|
||||
// }
|
||||
//
|
||||
// Call the connection's WriteMessage and ReadMessage methods to send and
|
||||
// receive messages as a slice of bytes. This snippet of code shows how to echo
|
||||
// messages using these methods:
|
||||
//
|
||||
// for {
|
||||
// messageType, p, err := conn.ReadMessage()
|
||||
// if err != nil {
|
||||
// log.Println(err)
|
||||
// return
|
||||
// }
|
||||
// if err := conn.WriteMessage(messageType, p); err != nil {
|
||||
// log.Println(err)
|
||||
// return
|
||||
// }
|
||||
// }
|
||||
//
|
||||
// In above snippet of code, p is a []byte and messageType is an int with value
|
||||
// websocket.BinaryMessage or websocket.TextMessage.
|
||||
//
|
||||
// An application can also send and receive messages using the io.WriteCloser
|
||||
// and io.Reader interfaces. To send a message, call the connection NextWriter
|
||||
// method to get an io.WriteCloser, write the message to the writer and close
|
||||
// the writer when done. To receive a message, call the connection NextReader
|
||||
// method to get an io.Reader and read until io.EOF is returned. This snippet
|
||||
// shows how to echo messages using the NextWriter and NextReader methods:
|
||||
//
|
||||
// for {
|
||||
// messageType, r, err := conn.NextReader()
|
||||
// if err != nil {
|
||||
// return
|
||||
// }
|
||||
// w, err := conn.NextWriter(messageType)
|
||||
// if err != nil {
|
||||
// return err
|
||||
// }
|
||||
// if _, err := io.Copy(w, r); err != nil {
|
||||
// return err
|
||||
// }
|
||||
// if err := w.Close(); err != nil {
|
||||
// return err
|
||||
// }
|
||||
// }
|
||||
//
|
||||
// Data Messages
|
||||
//
|
||||
// The WebSocket protocol distinguishes between text and binary data messages.
|
||||
// Text messages are interpreted as UTF-8 encoded text. The interpretation of
|
||||
// binary messages is left to the application.
|
||||
//
|
||||
// This package uses the TextMessage and BinaryMessage integer constants to
|
||||
// identify the two data message types. The ReadMessage and NextReader methods
|
||||
// return the type of the received message. The messageType argument to the
|
||||
// WriteMessage and NextWriter methods specifies the type of a sent message.
|
||||
//
|
||||
// It is the application's responsibility to ensure that text messages are
|
||||
// valid UTF-8 encoded text.
|
||||
//
|
||||
// Control Messages
|
||||
//
|
||||
// The WebSocket protocol defines three types of control messages: close, ping
|
||||
// and pong. Call the connection WriteControl, WriteMessage or NextWriter
|
||||
// methods to send a control message to the peer.
|
||||
//
|
||||
// Connections handle received close messages by calling the handler function
|
||||
// set with the SetCloseHandler method and by returning a *CloseError from the
|
||||
// NextReader, ReadMessage or the message Read method. The default close
|
||||
// handler sends a close message to the peer.
|
||||
//
|
||||
// Connections handle received ping messages by calling the handler function
|
||||
// set with the SetPingHandler method. The default ping handler sends a pong
|
||||
// message to the peer.
|
||||
//
|
||||
// Connections handle received pong messages by calling the handler function
|
||||
// set with the SetPongHandler method. The default pong handler does nothing.
|
||||
// If an application sends ping messages, then the application should set a
|
||||
// pong handler to receive the corresponding pong.
|
||||
//
|
||||
// The control message handler functions are called from the NextReader,
|
||||
// ReadMessage and message reader Read methods. The default close and ping
|
||||
// handlers can block these methods for a short time when the handler writes to
|
||||
// the connection.
|
||||
//
|
||||
// The application must read the connection to process close, ping and pong
|
||||
// messages sent from the peer. If the application is not otherwise interested
|
||||
// in messages from the peer, then the application should start a goroutine to
|
||||
// read and discard messages from the peer. A simple example is:
|
||||
//
|
||||
// func readLoop(c *websocket.Conn) {
|
||||
// for {
|
||||
// if _, _, err := c.NextReader(); err != nil {
|
||||
// c.Close()
|
||||
// break
|
||||
// }
|
||||
// }
|
||||
// }
|
||||
//
|
||||
// Concurrency
|
||||
//
|
||||
// Connections support one concurrent reader and one concurrent writer.
|
||||
//
|
||||
// Applications are responsible for ensuring that no more than one goroutine
|
||||
// calls the write methods (NextWriter, SetWriteDeadline, WriteMessage,
|
||||
// WriteJSON, EnableWriteCompression, SetCompressionLevel) concurrently and
|
||||
// that no more than one goroutine calls the read methods (NextReader,
|
||||
// SetReadDeadline, ReadMessage, ReadJSON, SetPongHandler, SetPingHandler)
|
||||
// concurrently.
|
||||
//
|
||||
// The Close and WriteControl methods can be called concurrently with all other
|
||||
// methods.
|
||||
//
|
||||
// Origin Considerations
|
||||
//
|
||||
// Web browsers allow Javascript applications to open a WebSocket connection to
|
||||
// any host. It's up to the server to enforce an origin policy using the Origin
|
||||
// request header sent by the browser.
|
||||
//
|
||||
// The Upgrader calls the function specified in the CheckOrigin field to check
|
||||
// the origin. If the CheckOrigin function returns false, then the Upgrade
|
||||
// method fails the WebSocket handshake with HTTP status 403.
|
||||
//
|
||||
// If the CheckOrigin field is nil, then the Upgrader uses a safe default: fail
|
||||
// the handshake if the Origin request header is present and the Origin host is
|
||||
// not equal to the Host request header.
|
||||
//
|
||||
// The deprecated package-level Upgrade function does not perform origin
|
||||
// checking. The application is responsible for checking the Origin header
|
||||
// before calling the Upgrade function.
|
||||
//
|
||||
// Buffers
|
||||
//
|
||||
// Connections buffer network input and output to reduce the number
|
||||
// of system calls when reading or writing messages.
|
||||
//
|
||||
// Write buffers are also used for constructing WebSocket frames. See RFC 6455,
|
||||
// Section 5 for a discussion of message framing. A WebSocket frame header is
|
||||
// written to the network each time a write buffer is flushed to the network.
|
||||
// Decreasing the size of the write buffer can increase the amount of framing
|
||||
// overhead on the connection.
|
||||
//
|
||||
// The buffer sizes in bytes are specified by the ReadBufferSize and
|
||||
// WriteBufferSize fields in the Dialer and Upgrader. The Dialer uses a default
|
||||
// size of 4096 when a buffer size field is set to zero. The Upgrader reuses
|
||||
// buffers created by the HTTP server when a buffer size field is set to zero.
|
||||
// The HTTP server buffers have a size of 4096 at the time of this writing.
|
||||
//
|
||||
// The buffer sizes do not limit the size of a message that can be read or
|
||||
// written by a connection.
|
||||
//
|
||||
// Buffers are held for the lifetime of the connection by default. If the
|
||||
// Dialer or Upgrader WriteBufferPool field is set, then a connection holds the
|
||||
// write buffer only when writing a message.
|
||||
//
|
||||
// Applications should tune the buffer sizes to balance memory use and
|
||||
// performance. Increasing the buffer size uses more memory, but can reduce the
|
||||
// number of system calls to read or write the network. In the case of writing,
|
||||
// increasing the buffer size can reduce the number of frame headers written to
|
||||
// the network.
|
||||
//
|
||||
// Some guidelines for setting buffer parameters are:
|
||||
//
|
||||
// Limit the buffer sizes to the maximum expected message size. Buffers larger
|
||||
// than the largest message do not provide any benefit.
|
||||
//
|
||||
// Depending on the distribution of message sizes, setting the buffer size to
|
||||
// to a value less than the maximum expected message size can greatly reduce
|
||||
// memory use with a small impact on performance. Here's an example: If 99% of
|
||||
// the messages are smaller than 256 bytes and the maximum message size is 512
|
||||
// bytes, then a buffer size of 256 bytes will result in 1.01 more system calls
|
||||
// than a buffer size of 512 bytes. The memory savings is 50%.
|
||||
//
|
||||
// A write buffer pool is useful when the application has a modest number
|
||||
// writes over a large number of connections. when buffers are pooled, a larger
|
||||
// buffer size has a reduced impact on total memory use and has the benefit of
|
||||
// reducing system calls and frame overhead.
|
||||
//
|
||||
// Compression EXPERIMENTAL
|
||||
//
|
||||
// Per message compression extensions (RFC 7692) are experimentally supported
|
||||
// by this package in a limited capacity. Setting the EnableCompression option
|
||||
// to true in Dialer or Upgrader will attempt to negotiate per message deflate
|
||||
// support.
|
||||
//
|
||||
// var upgrader = websocket.Upgrader{
|
||||
// EnableCompression: true,
|
||||
// }
|
||||
//
|
||||
// If compression was successfully negotiated with the connection's peer, any
|
||||
// message received in compressed form will be automatically decompressed.
|
||||
// All Read methods will return uncompressed bytes.
|
||||
//
|
||||
// Per message compression of messages written to a connection can be enabled
|
||||
// or disabled by calling the corresponding Conn method:
|
||||
//
|
||||
// conn.EnableWriteCompression(false)
|
||||
//
|
||||
// Currently this package does not support compression with "context takeover".
|
||||
// This means that messages must be compressed and decompressed in isolation,
|
||||
// without retaining sliding window or dictionary state across messages. For
|
||||
// more details refer to RFC 7692.
|
||||
//
|
||||
// Use of compression is experimental and may result in decreased performance.
|
||||
package websocket
|
@ -0,0 +1,3 @@
|
||||
module github.com/gorilla/websocket
|
||||
|
||||
go 1.12
|
@ -0,0 +1,2 @@
|
||||
github.com/gorilla/websocket v1.4.0 h1:WDFjx/TMzVgy9VdMMQi2K2Emtwi2QcUQsztZ/zLaH/Q=
|
||||
github.com/gorilla/websocket v1.4.0/go.mod h1:E7qHFY5m1UJ88s3WnNqhKjPHQ0heANvMoAMk2YaljkQ=
|
@ -0,0 +1,42 @@
|
||||
// Copyright 2019 The Gorilla WebSocket Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package websocket
|
||||
|
||||
import (
|
||||
"io"
|
||||
"strings"
|
||||
)
|
||||
|
||||
// JoinMessages concatenates received messages to create a single io.Reader.
|
||||
// The string term is appended to each message. The returned reader does not
|
||||
// support concurrent calls to the Read method.
|
||||
func JoinMessages(c *Conn, term string) io.Reader {
|
||||
return &joinReader{c: c, term: term}
|
||||
}
|
||||
|
||||
type joinReader struct {
|
||||
c *Conn
|
||||
term string
|
||||
r io.Reader
|
||||
}
|
||||
|
||||
func (r *joinReader) Read(p []byte) (int, error) {
|
||||
if r.r == nil {
|
||||
var err error
|
||||
_, r.r, err = r.c.NextReader()
|
||||
if err != nil {
|
||||
return 0, err
|
||||
}
|
||||
if r.term != "" {
|
||||
r.r = io.MultiReader(r.r, strings.NewReader(r.term))
|
||||
}
|
||||
}
|
||||
n, err := r.r.Read(p)
|
||||
if err == io.EOF {
|
||||
err = nil
|
||||
r.r = nil
|
||||
}
|
||||
return n, err
|
||||
}
|
@ -0,0 +1,60 @@
|
||||
// Copyright 2013 The Gorilla WebSocket Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package websocket
|
||||
|
||||
import (
|
||||
"encoding/json"
|
||||
"io"
|
||||
)
|
||||
|
||||
// WriteJSON writes the JSON encoding of v as a message.
|
||||
//
|
||||
// Deprecated: Use c.WriteJSON instead.
|
||||
func WriteJSON(c *Conn, v interface{}) error {
|
||||
return c.WriteJSON(v)
|
||||
}
|
||||
|
||||
// WriteJSON writes the JSON encoding of v as a message.
|
||||
//
|
||||
// See the documentation for encoding/json Marshal for details about the
|
||||
// conversion of Go values to JSON.
|
||||
func (c *Conn) WriteJSON(v interface{}) error {
|
||||
w, err := c.NextWriter(TextMessage)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
err1 := json.NewEncoder(w).Encode(v)
|
||||
err2 := w.Close()
|
||||
if err1 != nil {
|
||||
return err1
|
||||
}
|
||||
return err2
|
||||
}
|
||||
|
||||
// ReadJSON reads the next JSON-encoded message from the connection and stores
|
||||
// it in the value pointed to by v.
|
||||
//
|
||||
// Deprecated: Use c.ReadJSON instead.
|
||||
func ReadJSON(c *Conn, v interface{}) error {
|
||||
return c.ReadJSON(v)
|
||||
}
|
||||
|
||||
// ReadJSON reads the next JSON-encoded message from the connection and stores
|
||||
// it in the value pointed to by v.
|
||||
//
|
||||
// See the documentation for the encoding/json Unmarshal function for details
|
||||
// about the conversion of JSON to a Go value.
|
||||
func (c *Conn) ReadJSON(v interface{}) error {
|
||||
_, r, err := c.NextReader()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
err = json.NewDecoder(r).Decode(v)
|
||||
if err == io.EOF {
|
||||
// One value is expected in the message.
|
||||
err = io.ErrUnexpectedEOF
|
||||
}
|
||||
return err
|
||||
}
|
@ -0,0 +1,54 @@
|
||||
// Copyright 2016 The Gorilla WebSocket Authors. All rights reserved. Use of
|
||||
// this source code is governed by a BSD-style license that can be found in the
|
||||
// LICENSE file.
|
||||
|
||||
// +build !appengine
|
||||
|
||||
package websocket
|
||||
|
||||
import "unsafe"
|
||||
|
||||
const wordSize = int(unsafe.Sizeof(uintptr(0)))
|
||||
|
||||
func maskBytes(key [4]byte, pos int, b []byte) int {
|
||||
// Mask one byte at a time for small buffers.
|
||||
if len(b) < 2*wordSize {
|
||||
for i := range b {
|
||||
b[i] ^= key[pos&3]
|
||||
pos++
|
||||
}
|
||||
return pos & 3
|
||||
}
|
||||
|
||||
// Mask one byte at a time to word boundary.
|
||||
if n := int(uintptr(unsafe.Pointer(&b[0]))) % wordSize; n != 0 {
|
||||
n = wordSize - n
|
||||
for i := range b[:n] {
|
||||
b[i] ^= key[pos&3]
|
||||
pos++
|
||||
}
|
||||
b = b[n:]
|
||||
}
|
||||
|
||||
// Create aligned word size key.
|
||||
var k [wordSize]byte
|
||||
for i := range k {
|
||||
k[i] = key[(pos+i)&3]
|
||||
}
|
||||
kw := *(*uintptr)(unsafe.Pointer(&k))
|
||||
|
||||
// Mask one word at a time.
|
||||
n := (len(b) / wordSize) * wordSize
|
||||
for i := 0; i < n; i += wordSize {
|
||||
*(*uintptr)(unsafe.Pointer(uintptr(unsafe.Pointer(&b[0])) + uintptr(i))) ^= kw
|
||||
}
|
||||
|
||||
// Mask one byte at a time for remaining bytes.
|
||||
b = b[n:]
|
||||
for i := range b {
|
||||
b[i] ^= key[pos&3]
|
||||
pos++
|
||||
}
|
||||
|
||||
return pos & 3
|
||||
}
|
@ -0,0 +1,15 @@
|
||||
// Copyright 2016 The Gorilla WebSocket Authors. All rights reserved. Use of
|
||||
// this source code is governed by a BSD-style license that can be found in the
|
||||
// LICENSE file.
|
||||
|
||||
// +build appengine
|
||||
|
||||
package websocket
|
||||
|
||||
func maskBytes(key [4]byte, pos int, b []byte) int {
|
||||
for i := range b {
|
||||
b[i] ^= key[pos&3]
|
||||
pos++
|
||||
}
|
||||
return pos & 3
|
||||
}
|
@ -0,0 +1,102 @@
|
||||
// Copyright 2017 The Gorilla WebSocket Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package websocket
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"net"
|
||||
"sync"
|
||||
"time"
|
||||
)
|
||||
|
||||
// PreparedMessage caches on the wire representations of a message payload.
|
||||
// Use PreparedMessage to efficiently send a message payload to multiple
|
||||
// connections. PreparedMessage is especially useful when compression is used
|
||||
// because the CPU and memory expensive compression operation can be executed
|
||||
// once for a given set of compression options.
|
||||
type PreparedMessage struct {
|
||||
messageType int
|
||||
data []byte
|
||||
mu sync.Mutex
|
||||
frames map[prepareKey]*preparedFrame
|
||||
}
|
||||
|
||||
// prepareKey defines a unique set of options to cache prepared frames in PreparedMessage.
|
||||
type prepareKey struct {
|
||||
isServer bool
|
||||
compress bool
|
||||
compressionLevel int
|
||||
}
|
||||
|
||||
// preparedFrame contains data in wire representation.
|
||||
type preparedFrame struct {
|
||||
once sync.Once
|
||||
data []byte
|
||||
}
|
||||
|
||||
// NewPreparedMessage returns an initialized PreparedMessage. You can then send
|
||||
// it to connection using WritePreparedMessage method. Valid wire
|
||||
// representation will be calculated lazily only once for a set of current
|
||||
// connection options.
|
||||
func NewPreparedMessage(messageType int, data []byte) (*PreparedMessage, error) {
|
||||
pm := &PreparedMessage{
|
||||
messageType: messageType,
|
||||
frames: make(map[prepareKey]*preparedFrame),
|
||||
data: data,
|
||||
}
|
||||
|
||||
// Prepare a plain server frame.
|
||||
_, frameData, err := pm.frame(prepareKey{isServer: true, compress: false})
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
// To protect against caller modifying the data argument, remember the data
|
||||
// copied to the plain server frame.
|
||||
pm.data = frameData[len(frameData)-len(data):]
|
||||
return pm, nil
|
||||
}
|
||||
|
||||
func (pm *PreparedMessage) frame(key prepareKey) (int, []byte, error) {
|
||||
pm.mu.Lock()
|
||||
frame, ok := pm.frames[key]
|
||||
if !ok {
|
||||
frame = &preparedFrame{}
|
||||
pm.frames[key] = frame
|
||||
}
|
||||
pm.mu.Unlock()
|
||||
|
||||
var err error
|
||||
frame.once.Do(func() {
|
||||
// Prepare a frame using a 'fake' connection.
|
||||
// TODO: Refactor code in conn.go to allow more direct construction of
|
||||
// the frame.
|
||||
mu := make(chan bool, 1)
|
||||
mu <- true
|
||||
var nc prepareConn
|
||||
c := &Conn{
|
||||
conn: &nc,
|
||||
mu: mu,
|
||||
isServer: key.isServer,
|
||||
compressionLevel: key.compressionLevel,
|
||||
enableWriteCompression: true,
|
||||
writeBuf: make([]byte, defaultWriteBufferSize+maxFrameHeaderSize),
|
||||
}
|
||||
if key.compress {
|
||||
c.newCompressionWriter = compressNoContextTakeover
|
||||
}
|
||||
err = c.WriteMessage(pm.messageType, pm.data)
|
||||
frame.data = nc.buf.Bytes()
|
||||
})
|
||||
return pm.messageType, frame.data, err
|
||||
}
|
||||
|
||||
type prepareConn struct {
|
||||
buf bytes.Buffer
|
||||
net.Conn
|
||||
}
|
||||
|
||||
func (pc *prepareConn) Write(p []byte) (int, error) { return pc.buf.Write(p) }
|
||||
func (pc *prepareConn) SetWriteDeadline(t time.Time) error { return nil }
|
@ -0,0 +1,77 @@
|
||||
// Copyright 2017 The Gorilla WebSocket Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package websocket
|
||||
|
||||
import (
|
||||
"bufio"
|
||||
"encoding/base64"
|
||||
"errors"
|
||||
"net"
|
||||
"net/http"
|
||||
"net/url"
|
||||
"strings"
|
||||
)
|
||||
|
||||
type netDialerFunc func(network, addr string) (net.Conn, error)
|
||||
|
||||
func (fn netDialerFunc) Dial(network, addr string) (net.Conn, error) {
|
||||
return fn(network, addr)
|
||||
}
|
||||
|
||||
func init() {
|
||||
proxy_RegisterDialerType("http", func(proxyURL *url.URL, forwardDialer proxy_Dialer) (proxy_Dialer, error) {
|
||||
return &httpProxyDialer{proxyURL: proxyURL, forwardDial: forwardDialer.Dial}, nil
|
||||
})
|
||||
}
|
||||
|
||||
type httpProxyDialer struct {
|
||||
proxyURL *url.URL
|
||||
forwardDial func(network, addr string) (net.Conn, error)
|
||||
}
|
||||
|
||||
func (hpd *httpProxyDialer) Dial(network string, addr string) (net.Conn, error) {
|
||||
hostPort, _ := hostPortNoPort(hpd.proxyURL)
|
||||
conn, err := hpd.forwardDial(network, hostPort)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
connectHeader := make(http.Header)
|
||||
if user := hpd.proxyURL.User; user != nil {
|
||||
proxyUser := user.Username()
|
||||
if proxyPassword, passwordSet := user.Password(); passwordSet {
|
||||
credential := base64.StdEncoding.EncodeToString([]byte(proxyUser + ":" + proxyPassword))
|
||||
connectHeader.Set("Proxy-Authorization", "Basic "+credential)
|
||||
}
|
||||
}
|
||||
|
||||
connectReq := &http.Request{
|
||||
Method: "CONNECT",
|
||||
URL: &url.URL{Opaque: addr},
|
||||
Host: addr,
|
||||
Header: connectHeader,
|
||||
}
|
||||
|
||||
if err := connectReq.Write(conn); err != nil {
|
||||
conn.Close()
|
||||
return nil, err
|
||||
}
|
||||
|
||||
// Read response. It's OK to use and discard buffered reader here becaue
|
||||
// the remote server does not speak until spoken to.
|
||||
br := bufio.NewReader(conn)
|
||||
resp, err := http.ReadResponse(br, connectReq)
|
||||
if err != nil {
|
||||
conn.Close()
|
||||
return nil, err
|
||||
}
|
||||
|
||||
if resp.StatusCode != 200 {
|
||||
conn.Close()
|
||||
f := strings.SplitN(resp.Status, " ", 2)
|
||||
return nil, errors.New(f[1])
|
||||
}
|
||||
return conn, nil
|
||||
}
|
@ -0,0 +1,363 @@
|
||||
// Copyright 2013 The Gorilla WebSocket Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package websocket
|
||||
|
||||
import (
|
||||
"bufio"
|
||||
"errors"
|
||||
"io"
|
||||
"net/http"
|
||||
"net/url"
|
||||
"strings"
|
||||
"time"
|
||||
)
|
||||
|
||||
// HandshakeError describes an error with the handshake from the peer.
|
||||
type HandshakeError struct {
|
||||
message string
|
||||
}
|
||||
|
||||
func (e HandshakeError) Error() string { return e.message }
|
||||
|
||||
// Upgrader specifies parameters for upgrading an HTTP connection to a
|
||||
// WebSocket connection.
|
||||
type Upgrader struct {
|
||||
// HandshakeTimeout specifies the duration for the handshake to complete.
|
||||
HandshakeTimeout time.Duration
|
||||
|
||||
// ReadBufferSize and WriteBufferSize specify I/O buffer sizes in bytes. If a buffer
|
||||
// size is zero, then buffers allocated by the HTTP server are used. The
|
||||
// I/O buffer sizes do not limit the size of the messages that can be sent
|
||||
// or received.
|
||||
ReadBufferSize, WriteBufferSize int
|
||||
|
||||
// WriteBufferPool is a pool of buffers for write operations. If the value
|
||||
// is not set, then write buffers are allocated to the connection for the
|
||||
// lifetime of the connection.
|
||||
//
|
||||
// A pool is most useful when the application has a modest volume of writes
|
||||
// across a large number of connections.
|
||||
//
|
||||
// Applications should use a single pool for each unique value of
|
||||
// WriteBufferSize.
|
||||
WriteBufferPool BufferPool
|
||||
|
||||
// Subprotocols specifies the server's supported protocols in order of
|
||||
// preference. If this field is not nil, then the Upgrade method negotiates a
|
||||
// subprotocol by selecting the first match in this list with a protocol
|
||||
// requested by the client. If there's no match, then no protocol is
|
||||
// negotiated (the Sec-Websocket-Protocol header is not included in the
|
||||
// handshake response).
|
||||
Subprotocols []string
|
||||
|
||||
// Error specifies the function for generating HTTP error responses. If Error
|
||||
// is nil, then http.Error is used to generate the HTTP response.
|
||||
Error func(w http.ResponseWriter, r *http.Request, status int, reason error)
|
||||
|
||||
// CheckOrigin returns true if the request Origin header is acceptable. If
|
||||
// CheckOrigin is nil, then a safe default is used: return false if the
|
||||
// Origin request header is present and the origin host is not equal to
|
||||
// request Host header.
|
||||
//
|
||||
// A CheckOrigin function should carefully validate the request origin to
|
||||
// prevent cross-site request forgery.
|
||||
CheckOrigin func(r *http.Request) bool
|
||||
|
||||
// EnableCompression specify if the server should attempt to negotiate per
|
||||
// message compression (RFC 7692). Setting this value to true does not
|
||||
// guarantee that compression will be supported. Currently only "no context
|
||||
// takeover" modes are supported.
|
||||
EnableCompression bool
|
||||
}
|
||||
|
||||
func (u *Upgrader) returnError(w http.ResponseWriter, r *http.Request, status int, reason string) (*Conn, error) {
|
||||
err := HandshakeError{reason}
|
||||
if u.Error != nil {
|
||||
u.Error(w, r, status, err)
|
||||
} else {
|
||||
w.Header().Set("Sec-Websocket-Version", "13")
|
||||
http.Error(w, http.StatusText(status), status)
|
||||
}
|
||||
return nil, err
|
||||
}
|
||||
|
||||
// checkSameOrigin returns true if the origin is not set or is equal to the request host.
|
||||
func checkSameOrigin(r *http.Request) bool {
|
||||
origin := r.Header["Origin"]
|
||||
if len(origin) == 0 {
|
||||
return true
|
||||
}
|
||||
u, err := url.Parse(origin[0])
|
||||
if err != nil {
|
||||
return false
|
||||
}
|
||||
return equalASCIIFold(u.Host, r.Host)
|
||||
}
|
||||
|
||||
func (u *Upgrader) selectSubprotocol(r *http.Request, responseHeader http.Header) string {
|
||||
if u.Subprotocols != nil {
|
||||
clientProtocols := Subprotocols(r)
|
||||
for _, serverProtocol := range u.Subprotocols {
|
||||
for _, clientProtocol := range clientProtocols {
|
||||
if clientProtocol == serverProtocol {
|
||||
return clientProtocol
|
||||
}
|
||||
}
|
||||
}
|
||||
} else if responseHeader != nil {
|
||||
return responseHeader.Get("Sec-Websocket-Protocol")
|
||||
}
|
||||
return ""
|
||||
}
|
||||
|
||||
// Upgrade upgrades the HTTP server connection to the WebSocket protocol.
|
||||
//
|
||||
// The responseHeader is included in the response to the client's upgrade
|
||||
// request. Use the responseHeader to specify cookies (Set-Cookie) and the
|
||||
// application negotiated subprotocol (Sec-WebSocket-Protocol).
|
||||
//
|
||||
// If the upgrade fails, then Upgrade replies to the client with an HTTP error
|
||||
// response.
|
||||
func (u *Upgrader) Upgrade(w http.ResponseWriter, r *http.Request, responseHeader http.Header) (*Conn, error) {
|
||||
const badHandshake = "websocket: the client is not using the websocket protocol: "
|
||||
|
||||
if !tokenListContainsValue(r.Header, "Connection", "upgrade") {
|
||||
return u.returnError(w, r, http.StatusBadRequest, badHandshake+"'upgrade' token not found in 'Connection' header")
|
||||
}
|
||||
|
||||
if !tokenListContainsValue(r.Header, "Upgrade", "websocket") {
|
||||
return u.returnError(w, r, http.StatusBadRequest, badHandshake+"'websocket' token not found in 'Upgrade' header")
|
||||
}
|
||||
|
||||
if r.Method != "GET" {
|
||||
return u.returnError(w, r, http.StatusMethodNotAllowed, badHandshake+"request method is not GET")
|
||||
}
|
||||
|
||||
if !tokenListContainsValue(r.Header, "Sec-Websocket-Version", "13") {
|
||||
return u.returnError(w, r, http.StatusBadRequest, "websocket: unsupported version: 13 not found in 'Sec-Websocket-Version' header")
|
||||
}
|
||||
|
||||
if _, ok := responseHeader["Sec-Websocket-Extensions"]; ok {
|
||||
return u.returnError(w, r, http.StatusInternalServerError, "websocket: application specific 'Sec-WebSocket-Extensions' headers are unsupported")
|
||||
}
|
||||
|
||||
checkOrigin := u.CheckOrigin
|
||||
if checkOrigin == nil {
|
||||
checkOrigin = checkSameOrigin
|
||||
}
|
||||
if !checkOrigin(r) {
|
||||
return u.returnError(w, r, http.StatusForbidden, "websocket: request origin not allowed by Upgrader.CheckOrigin")
|
||||
}
|
||||
|
||||
challengeKey := r.Header.Get("Sec-Websocket-Key")
|
||||
if challengeKey == "" {
|
||||
return u.returnError(w, r, http.StatusBadRequest, "websocket: not a websocket handshake: 'Sec-WebSocket-Key' header is missing or blank")
|
||||
}
|
||||
|
||||
subprotocol := u.selectSubprotocol(r, responseHeader)
|
||||
|
||||
// Negotiate PMCE
|
||||
var compress bool
|
||||
if u.EnableCompression {
|
||||
for _, ext := range parseExtensions(r.Header) {
|
||||
if ext[""] != "permessage-deflate" {
|
||||
continue
|
||||
}
|
||||
compress = true
|
||||
break
|
||||
}
|
||||
}
|
||||
|
||||
h, ok := w.(http.Hijacker)
|
||||
if !ok {
|
||||
return u.returnError(w, r, http.StatusInternalServerError, "websocket: response does not implement http.Hijacker")
|
||||
}
|
||||
var brw *bufio.ReadWriter
|
||||
netConn, brw, err := h.Hijack()
|
||||
if err != nil {
|
||||
return u.returnError(w, r, http.StatusInternalServerError, err.Error())
|
||||
}
|
||||
|
||||
if brw.Reader.Buffered() > 0 {
|
||||
netConn.Close()
|
||||
return nil, errors.New("websocket: client sent data before handshake is complete")
|
||||
}
|
||||
|
||||
var br *bufio.Reader
|
||||
if u.ReadBufferSize == 0 && bufioReaderSize(netConn, brw.Reader) > 256 {
|
||||
// Reuse hijacked buffered reader as connection reader.
|
||||
br = brw.Reader
|
||||
}
|
||||
|
||||
buf := bufioWriterBuffer(netConn, brw.Writer)
|
||||
|
||||
var writeBuf []byte
|
||||
if u.WriteBufferPool == nil && u.WriteBufferSize == 0 && len(buf) >= maxFrameHeaderSize+256 {
|
||||
// Reuse hijacked write buffer as connection buffer.
|
||||
writeBuf = buf
|
||||
}
|
||||
|
||||
c := newConn(netConn, true, u.ReadBufferSize, u.WriteBufferSize, u.WriteBufferPool, br, writeBuf)
|
||||
c.subprotocol = subprotocol
|
||||
|
||||
if compress {
|
||||
c.newCompressionWriter = compressNoContextTakeover
|
||||
c.newDecompressionReader = decompressNoContextTakeover
|
||||
}
|
||||
|
||||
// Use larger of hijacked buffer and connection write buffer for header.
|
||||
p := buf
|
||||
if len(c.writeBuf) > len(p) {
|
||||
p = c.writeBuf
|
||||
}
|
||||
p = p[:0]
|
||||
|
||||
p = append(p, "HTTP/1.1 101 Switching Protocols\r\nUpgrade: websocket\r\nConnection: Upgrade\r\nSec-WebSocket-Accept: "...)
|
||||
p = append(p, computeAcceptKey(challengeKey)...)
|
||||
p = append(p, "\r\n"...)
|
||||
if c.subprotocol != "" {
|
||||
p = append(p, "Sec-WebSocket-Protocol: "...)
|
||||
p = append(p, c.subprotocol...)
|
||||
p = append(p, "\r\n"...)
|
||||
}
|
||||
if compress {
|
||||
p = append(p, "Sec-WebSocket-Extensions: permessage-deflate; server_no_context_takeover; client_no_context_takeover\r\n"...)
|
||||
}
|
||||
for k, vs := range responseHeader {
|
||||
if k == "Sec-Websocket-Protocol" {
|
||||
continue
|
||||
}
|
||||
for _, v := range vs {
|
||||
p = append(p, k...)
|
||||
p = append(p, ": "...)
|
||||
for i := 0; i < len(v); i++ {
|
||||
b := v[i]
|
||||
if b <= 31 {
|
||||
// prevent response splitting.
|
||||
b = ' '
|
||||
}
|
||||
p = append(p, b)
|
||||
}
|
||||
p = append(p, "\r\n"...)
|
||||
}
|
||||
}
|
||||
p = append(p, "\r\n"...)
|
||||
|
||||
// Clear deadlines set by HTTP server.
|
||||
netConn.SetDeadline(time.Time{})
|
||||
|
||||
if u.HandshakeTimeout > 0 {
|
||||
netConn.SetWriteDeadline(time.Now().Add(u.HandshakeTimeout))
|
||||
}
|
||||
if _, err = netConn.Write(p); err != nil {
|
||||
netConn.Close()
|
||||
return nil, err
|
||||
}
|
||||
if u.HandshakeTimeout > 0 {
|
||||
netConn.SetWriteDeadline(time.Time{})
|
||||
}
|
||||
|
||||
return c, nil
|
||||
}
|
||||
|
||||
// Upgrade upgrades the HTTP server connection to the WebSocket protocol.
|
||||
//
|
||||
// Deprecated: Use websocket.Upgrader instead.
|
||||
//
|
||||
// Upgrade does not perform origin checking. The application is responsible for
|
||||
// checking the Origin header before calling Upgrade. An example implementation
|
||||
// of the same origin policy check is:
|
||||
//
|
||||
// if req.Header.Get("Origin") != "http://"+req.Host {
|
||||
// http.Error(w, "Origin not allowed", http.StatusForbidden)
|
||||
// return
|
||||
// }
|
||||
//
|
||||
// If the endpoint supports subprotocols, then the application is responsible
|
||||
// for negotiating the protocol used on the connection. Use the Subprotocols()
|
||||
// function to get the subprotocols requested by the client. Use the
|
||||
// Sec-Websocket-Protocol response header to specify the subprotocol selected
|
||||
// by the application.
|
||||
//
|
||||
// The responseHeader is included in the response to the client's upgrade
|
||||
// request. Use the responseHeader to specify cookies (Set-Cookie) and the
|
||||
// negotiated subprotocol (Sec-Websocket-Protocol).
|
||||
//
|
||||
// The connection buffers IO to the underlying network connection. The
|
||||
// readBufSize and writeBufSize parameters specify the size of the buffers to
|
||||
// use. Messages can be larger than the buffers.
|
||||
//
|
||||
// If the request is not a valid WebSocket handshake, then Upgrade returns an
|
||||
// error of type HandshakeError. Applications should handle this error by
|
||||
// replying to the client with an HTTP error response.
|
||||
func Upgrade(w http.ResponseWriter, r *http.Request, responseHeader http.Header, readBufSize, writeBufSize int) (*Conn, error) {
|
||||
u := Upgrader{ReadBufferSize: readBufSize, WriteBufferSize: writeBufSize}
|
||||
u.Error = func(w http.ResponseWriter, r *http.Request, status int, reason error) {
|
||||
// don't return errors to maintain backwards compatibility
|
||||
}
|
||||
u.CheckOrigin = func(r *http.Request) bool {
|
||||
// allow all connections by default
|
||||
return true
|
||||
}
|
||||
return u.Upgrade(w, r, responseHeader)
|
||||
}
|
||||
|
||||
// Subprotocols returns the subprotocols requested by the client in the
|
||||
// Sec-Websocket-Protocol header.
|
||||
func Subprotocols(r *http.Request) []string {
|
||||
h := strings.TrimSpace(r.Header.Get("Sec-Websocket-Protocol"))
|
||||
if h == "" {
|
||||
return nil
|
||||
}
|
||||
protocols := strings.Split(h, ",")
|
||||
for i := range protocols {
|
||||
protocols[i] = strings.TrimSpace(protocols[i])
|
||||
}
|
||||
return protocols
|
||||
}
|
||||
|
||||
// IsWebSocketUpgrade returns true if the client requested upgrade to the
|
||||
// WebSocket protocol.
|
||||
func IsWebSocketUpgrade(r *http.Request) bool {
|
||||
return tokenListContainsValue(r.Header, "Connection", "upgrade") &&
|
||||
tokenListContainsValue(r.Header, "Upgrade", "websocket")
|
||||
}
|
||||
|
||||
// bufioReaderSize size returns the size of a bufio.Reader.
|
||||
func bufioReaderSize(originalReader io.Reader, br *bufio.Reader) int {
|
||||
// This code assumes that peek on a reset reader returns
|
||||
// bufio.Reader.buf[:0].
|
||||
// TODO: Use bufio.Reader.Size() after Go 1.10
|
||||
br.Reset(originalReader)
|
||||
if p, err := br.Peek(0); err == nil {
|
||||
return cap(p)
|
||||
}
|
||||
return 0
|
||||
}
|
||||
|
||||
// writeHook is an io.Writer that records the last slice passed to it vio
|
||||
// io.Writer.Write.
|
||||
type writeHook struct {
|
||||
p []byte
|
||||
}
|
||||
|
||||
func (wh *writeHook) Write(p []byte) (int, error) {
|
||||
wh.p = p
|
||||
return len(p), nil
|
||||
}
|
||||
|
||||
// bufioWriterBuffer grabs the buffer from a bufio.Writer.
|
||||
func bufioWriterBuffer(originalWriter io.Writer, bw *bufio.Writer) []byte {
|
||||
// This code assumes that bufio.Writer.buf[:1] is passed to the
|
||||
// bufio.Writer's underlying writer.
|
||||
var wh writeHook
|
||||
bw.Reset(&wh)
|
||||
bw.WriteByte(0)
|
||||
bw.Flush()
|
||||
|
||||
bw.Reset(originalWriter)
|
||||
|
||||
return wh.p[:cap(wh.p)]
|
||||
}
|
@ -0,0 +1,19 @@
|
||||
// +build go1.8
|
||||
|
||||
package websocket
|
||||
|
||||
import (
|
||||
"crypto/tls"
|
||||
"net/http/httptrace"
|
||||
)
|
||||
|
||||
func doHandshakeWithTrace(trace *httptrace.ClientTrace, tlsConn *tls.Conn, cfg *tls.Config) error {
|
||||
if trace.TLSHandshakeStart != nil {
|
||||
trace.TLSHandshakeStart()
|
||||
}
|
||||
err := doHandshake(tlsConn, cfg)
|
||||
if trace.TLSHandshakeDone != nil {
|
||||
trace.TLSHandshakeDone(tlsConn.ConnectionState(), err)
|
||||
}
|
||||
return err
|
||||
}
|
@ -0,0 +1,12 @@
|
||||
// +build !go1.8
|
||||
|
||||
package websocket
|
||||
|
||||
import (
|
||||
"crypto/tls"
|
||||
"net/http/httptrace"
|
||||
)
|
||||
|
||||
func doHandshakeWithTrace(trace *httptrace.ClientTrace, tlsConn *tls.Conn, cfg *tls.Config) error {
|
||||
return doHandshake(tlsConn, cfg)
|
||||
}
|
@ -0,0 +1,283 @@
|
||||
// Copyright 2013 The Gorilla WebSocket Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package websocket
|
||||
|
||||
import (
|
||||
"crypto/rand"
|
||||
"crypto/sha1"
|
||||
"encoding/base64"
|
||||
"io"
|
||||
"net/http"
|
||||
"strings"
|
||||
"unicode/utf8"
|
||||
)
|
||||
|
||||
var keyGUID = []byte("258EAFA5-E914-47DA-95CA-C5AB0DC85B11")
|
||||
|
||||
func computeAcceptKey(challengeKey string) string {
|
||||
h := sha1.New()
|
||||
h.Write([]byte(challengeKey))
|
||||
h.Write(keyGUID)
|
||||
return base64.StdEncoding.EncodeToString(h.Sum(nil))
|
||||
}
|
||||
|
||||
func generateChallengeKey() (string, error) {
|
||||
p := make([]byte, 16)
|
||||
if _, err := io.ReadFull(rand.Reader, p); err != nil {
|
||||
return "", err
|
||||
}
|
||||
return base64.StdEncoding.EncodeToString(p), nil
|
||||
}
|
||||
|
||||
// Token octets per RFC 2616.
|
||||
var isTokenOctet = [256]bool{
|
||||
'!': true,
|
||||
'#': true,
|
||||
'$': true,
|
||||
'%': true,
|
||||
'&': true,
|
||||
'\'': true,
|
||||
'*': true,
|
||||
'+': true,
|
||||
'-': true,
|
||||
'.': true,
|
||||
'0': true,
|
||||
'1': true,
|
||||
'2': true,
|
||||
'3': true,
|
||||
'4': true,
|
||||
'5': true,
|
||||
'6': true,
|
||||
'7': true,
|
||||
'8': true,
|
||||
'9': true,
|
||||
'A': true,
|
||||
'B': true,
|
||||
'C': true,
|
||||
'D': true,
|
||||
'E': true,
|
||||
'F': true,
|
||||
'G': true,
|
||||
'H': true,
|
||||
'I': true,
|
||||
'J': true,
|
||||
'K': true,
|
||||
'L': true,
|
||||
'M': true,
|
||||
'N': true,
|
||||
'O': true,
|
||||
'P': true,
|
||||
'Q': true,
|
||||
'R': true,
|
||||
'S': true,
|
||||
'T': true,
|
||||
'U': true,
|
||||
'W': true,
|
||||
'V': true,
|
||||
'X': true,
|
||||
'Y': true,
|
||||
'Z': true,
|
||||
'^': true,
|
||||
'_': true,
|
||||
'`': true,
|
||||
'a': true,
|
||||
'b': true,
|
||||
'c': true,
|
||||
'd': true,
|
||||
'e': true,
|
||||
'f': true,
|
||||
'g': true,
|
||||
'h': true,
|
||||
'i': true,
|
||||
'j': true,
|
||||
'k': true,
|
||||
'l': true,
|
||||
'm': true,
|
||||
'n': true,
|
||||
'o': true,
|
||||
'p': true,
|
||||
'q': true,
|
||||
'r': true,
|
||||
's': true,
|
||||
't': true,
|
||||
'u': true,
|
||||
'v': true,
|
||||
'w': true,
|
||||
'x': true,
|
||||
'y': true,
|
||||
'z': true,
|
||||
'|': true,
|
||||
'~': true,
|
||||
}
|
||||
|
||||
// skipSpace returns a slice of the string s with all leading RFC 2616 linear
|
||||
// whitespace removed.
|
||||
func skipSpace(s string) (rest string) {
|
||||
i := 0
|
||||
for ; i < len(s); i++ {
|
||||
if b := s[i]; b != ' ' && b != '\t' {
|
||||
break
|
||||
}
|
||||
}
|
||||
return s[i:]
|
||||
}
|
||||
|
||||
// nextToken returns the leading RFC 2616 token of s and the string following
|
||||
// the token.
|
||||
func nextToken(s string) (token, rest string) {
|
||||
i := 0
|
||||
for ; i < len(s); i++ {
|
||||
if !isTokenOctet[s[i]] {
|
||||
break
|
||||
}
|
||||
}
|
||||
return s[:i], s[i:]
|
||||
}
|
||||
|
||||
// nextTokenOrQuoted returns the leading token or quoted string per RFC 2616
|
||||
// and the string following the token or quoted string.
|
||||
func nextTokenOrQuoted(s string) (value string, rest string) {
|
||||
if !strings.HasPrefix(s, "\"") {
|
||||
return nextToken(s)
|
||||
}
|
||||
s = s[1:]
|
||||
for i := 0; i < len(s); i++ {
|
||||
switch s[i] {
|
||||
case '"':
|
||||
return s[:i], s[i+1:]
|
||||
case '\\':
|
||||
p := make([]byte, len(s)-1)
|
||||
j := copy(p, s[:i])
|
||||
escape := true
|
||||
for i = i + 1; i < len(s); i++ {
|
||||
b := s[i]
|
||||
switch {
|
||||
case escape:
|
||||
escape = false
|
||||
p[j] = b
|
||||
j++
|
||||
case b == '\\':
|
||||
escape = true
|
||||
case b == '"':
|
||||
return string(p[:j]), s[i+1:]
|
||||
default:
|
||||
p[j] = b
|
||||
j++
|
||||
}
|
||||
}
|
||||
return "", ""
|
||||
}
|
||||
}
|
||||
return "", ""
|
||||
}
|
||||
|
||||
// equalASCIIFold returns true if s is equal to t with ASCII case folding as
|
||||
// defined in RFC 4790.
|
||||
func equalASCIIFold(s, t string) bool {
|
||||
for s != "" && t != "" {
|
||||
sr, size := utf8.DecodeRuneInString(s)
|
||||
s = s[size:]
|
||||
tr, size := utf8.DecodeRuneInString(t)
|
||||
t = t[size:]
|
||||
if sr == tr {
|
||||
continue
|
||||
}
|
||||
if 'A' <= sr && sr <= 'Z' {
|
||||
sr = sr + 'a' - 'A'
|
||||
}
|
||||
if 'A' <= tr && tr <= 'Z' {
|
||||
tr = tr + 'a' - 'A'
|
||||
}
|
||||
if sr != tr {
|
||||
return false
|
||||
}
|
||||
}
|
||||
return s == t
|
||||
}
|
||||
|
||||
// tokenListContainsValue returns true if the 1#token header with the given
|
||||
// name contains a token equal to value with ASCII case folding.
|
||||
func tokenListContainsValue(header http.Header, name string, value string) bool {
|
||||
headers:
|
||||
for _, s := range header[name] {
|
||||
for {
|
||||
var t string
|
||||
t, s = nextToken(skipSpace(s))
|
||||
if t == "" {
|
||||
continue headers
|
||||
}
|
||||
s = skipSpace(s)
|
||||
if s != "" && s[0] != ',' {
|
||||
continue headers
|
||||
}
|
||||
if equalASCIIFold(t, value) {
|
||||
return true
|
||||
}
|
||||
if s == "" {
|
||||
continue headers
|
||||
}
|
||||
s = s[1:]
|
||||
}
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
// parseExtensions parses WebSocket extensions from a header.
|
||||
func parseExtensions(header http.Header) []map[string]string {
|
||||
// From RFC 6455:
|
||||
//
|
||||
// Sec-WebSocket-Extensions = extension-list
|
||||
// extension-list = 1#extension
|
||||
// extension = extension-token *( ";" extension-param )
|
||||
// extension-token = registered-token
|
||||
// registered-token = token
|
||||
// extension-param = token [ "=" (token | quoted-string) ]
|
||||
// ;When using the quoted-string syntax variant, the value
|
||||
// ;after quoted-string unescaping MUST conform to the
|
||||
// ;'token' ABNF.
|
||||
|
||||
var result []map[string]string
|
||||
headers:
|
||||
for _, s := range header["Sec-Websocket-Extensions"] {
|
||||
for {
|
||||
var t string
|
||||
t, s = nextToken(skipSpace(s))
|
||||
if t == "" {
|
||||
continue headers
|
||||
}
|
||||
ext := map[string]string{"": t}
|
||||
for {
|
||||
s = skipSpace(s)
|
||||
if !strings.HasPrefix(s, ";") {
|
||||
break
|
||||
}
|
||||
var k string
|
||||
k, s = nextToken(skipSpace(s[1:]))
|
||||
if k == "" {
|
||||
continue headers
|
||||
}
|
||||
s = skipSpace(s)
|
||||
var v string
|
||||
if strings.HasPrefix(s, "=") {
|
||||
v, s = nextTokenOrQuoted(skipSpace(s[1:]))
|
||||
s = skipSpace(s)
|
||||
}
|
||||
if s != "" && s[0] != ',' && s[0] != ';' {
|
||||
continue headers
|
||||
}
|
||||
ext[k] = v
|
||||
}
|
||||
if s != "" && s[0] != ',' {
|
||||
continue headers
|
||||
}
|
||||
result = append(result, ext)
|
||||
if s == "" {
|
||||
continue headers
|
||||
}
|
||||
s = s[1:]
|
||||
}
|
||||
}
|
||||
return result
|
||||
}
|
@ -0,0 +1,473 @@
|
||||
// Code generated by golang.org/x/tools/cmd/bundle. DO NOT EDIT.
|
||||
//go:generate bundle -o x_net_proxy.go golang.org/x/net/proxy
|
||||
|
||||
// Package proxy provides support for a variety of protocols to proxy network
|
||||
// data.
|
||||
//
|
||||
|
||||
package websocket
|
||||
|
||||
import (
|
||||
"errors"
|
||||
"io"
|
||||
"net"
|
||||
"net/url"
|
||||
"os"
|
||||
"strconv"
|
||||
"strings"
|
||||
"sync"
|
||||
)
|
||||
|
||||
type proxy_direct struct{}
|
||||
|
||||
// Direct is a direct proxy: one that makes network connections directly.
|
||||
var proxy_Direct = proxy_direct{}
|
||||
|
||||
func (proxy_direct) Dial(network, addr string) (net.Conn, error) {
|
||||
return net.Dial(network, addr)
|
||||
}
|
||||
|
||||
// A PerHost directs connections to a default Dialer unless the host name
|
||||
// requested matches one of a number of exceptions.
|
||||
type proxy_PerHost struct {
|
||||
def, bypass proxy_Dialer
|
||||
|
||||
bypassNetworks []*net.IPNet
|
||||
bypassIPs []net.IP
|
||||
bypassZones []string
|
||||
bypassHosts []string
|
||||
}
|
||||
|
||||
// NewPerHost returns a PerHost Dialer that directs connections to either
|
||||
// defaultDialer or bypass, depending on whether the connection matches one of
|
||||
// the configured rules.
|
||||
func proxy_NewPerHost(defaultDialer, bypass proxy_Dialer) *proxy_PerHost {
|
||||
return &proxy_PerHost{
|
||||
def: defaultDialer,
|
||||
bypass: bypass,
|
||||
}
|
||||
}
|
||||
|
||||
// Dial connects to the address addr on the given network through either
|
||||
// defaultDialer or bypass.
|
||||
func (p *proxy_PerHost) Dial(network, addr string) (c net.Conn, err error) {
|
||||
host, _, err := net.SplitHostPort(addr)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
return p.dialerForRequest(host).Dial(network, addr)
|
||||
}
|
||||
|
||||
func (p *proxy_PerHost) dialerForRequest(host string) proxy_Dialer {
|
||||
if ip := net.ParseIP(host); ip != nil {
|
||||
for _, net := range p.bypassNetworks {
|
||||
if net.Contains(ip) {
|
||||
return p.bypass
|
||||
}
|
||||
}
|
||||
for _, bypassIP := range p.bypassIPs {
|
||||
if bypassIP.Equal(ip) {
|
||||
return p.bypass
|
||||
}
|
||||
}
|
||||
return p.def
|
||||
}
|
||||
|
||||
for _, zone := range p.bypassZones {
|
||||
if strings.HasSuffix(host, zone) {
|
||||
return p.bypass
|
||||
}
|
||||
if host == zone[1:] {
|
||||
// For a zone ".example.com", we match "example.com"
|
||||
// too.
|
||||
return p.bypass
|
||||
}
|
||||
}
|
||||
for _, bypassHost := range p.bypassHosts {
|
||||
if bypassHost == host {
|
||||
return p.bypass
|
||||
}
|
||||
}
|
||||
return p.def
|
||||
}
|
||||
|
||||
// AddFromString parses a string that contains comma-separated values
|
||||
// specifying hosts that should use the bypass proxy. Each value is either an
|
||||
// IP address, a CIDR range, a zone (*.example.com) or a host name
|
||||
// (localhost). A best effort is made to parse the string and errors are
|
||||
// ignored.
|
||||
func (p *proxy_PerHost) AddFromString(s string) {
|
||||
hosts := strings.Split(s, ",")
|
||||
for _, host := range hosts {
|
||||
host = strings.TrimSpace(host)
|
||||
if len(host) == 0 {
|
||||
continue
|
||||
}
|
||||
if strings.Contains(host, "/") {
|
||||
// We assume that it's a CIDR address like 127.0.0.0/8
|
||||
if _, net, err := net.ParseCIDR(host); err == nil {
|
||||
p.AddNetwork(net)
|
||||
}
|
||||
continue
|
||||
}
|
||||
if ip := net.ParseIP(host); ip != nil {
|
||||
p.AddIP(ip)
|
||||
continue
|
||||
}
|
||||
if strings.HasPrefix(host, "*.") {
|
||||
p.AddZone(host[1:])
|
||||
continue
|
||||
}
|
||||
p.AddHost(host)
|
||||
}
|
||||
}
|
||||
|
||||
// AddIP specifies an IP address that will use the bypass proxy. Note that
|
||||
// this will only take effect if a literal IP address is dialed. A connection
|
||||
// to a named host will never match an IP.
|
||||
func (p *proxy_PerHost) AddIP(ip net.IP) {
|
||||
p.bypassIPs = append(p.bypassIPs, ip)
|
||||
}
|
||||
|
||||
// AddNetwork specifies an IP range that will use the bypass proxy. Note that
|
||||
// this will only take effect if a literal IP address is dialed. A connection
|
||||
// to a named host will never match.
|
||||
func (p *proxy_PerHost) AddNetwork(net *net.IPNet) {
|
||||
p.bypassNetworks = append(p.bypassNetworks, net)
|
||||
}
|
||||
|
||||
// AddZone specifies a DNS suffix that will use the bypass proxy. A zone of
|
||||
// "example.com" matches "example.com" and all of its subdomains.
|
||||
func (p *proxy_PerHost) AddZone(zone string) {
|
||||
if strings.HasSuffix(zone, ".") {
|
||||
zone = zone[:len(zone)-1]
|
||||
}
|
||||
if !strings.HasPrefix(zone, ".") {
|
||||
zone = "." + zone
|
||||
}
|
||||
p.bypassZones = append(p.bypassZones, zone)
|
||||
}
|
||||
|
||||
// AddHost specifies a host name that will use the bypass proxy.
|
||||
func (p *proxy_PerHost) AddHost(host string) {
|
||||
if strings.HasSuffix(host, ".") {
|
||||
host = host[:len(host)-1]
|
||||
}
|
||||
p.bypassHosts = append(p.bypassHosts, host)
|
||||
}
|
||||
|
||||
// A Dialer is a means to establish a connection.
|
||||
type proxy_Dialer interface {
|
||||
// Dial connects to the given address via the proxy.
|
||||
Dial(network, addr string) (c net.Conn, err error)
|
||||
}
|
||||
|
||||
// Auth contains authentication parameters that specific Dialers may require.
|
||||
type proxy_Auth struct {
|
||||
User, Password string
|
||||
}
|
||||
|
||||
// FromEnvironment returns the dialer specified by the proxy related variables in
|
||||
// the environment.
|
||||
func proxy_FromEnvironment() proxy_Dialer {
|
||||
allProxy := proxy_allProxyEnv.Get()
|
||||
if len(allProxy) == 0 {
|
||||
return proxy_Direct
|
||||
}
|
||||
|
||||
proxyURL, err := url.Parse(allProxy)
|
||||
if err != nil {
|
||||
return proxy_Direct
|
||||
}
|
||||
proxy, err := proxy_FromURL(proxyURL, proxy_Direct)
|
||||
if err != nil {
|
||||
return proxy_Direct
|
||||
}
|
||||
|
||||
noProxy := proxy_noProxyEnv.Get()
|
||||
if len(noProxy) == 0 {
|
||||
return proxy
|
||||
}
|
||||
|
||||
perHost := proxy_NewPerHost(proxy, proxy_Direct)
|
||||
perHost.AddFromString(noProxy)
|
||||
return perHost
|
||||
}
|
||||
|
||||
// proxySchemes is a map from URL schemes to a function that creates a Dialer
|
||||
// from a URL with such a scheme.
|
||||
var proxy_proxySchemes map[string]func(*url.URL, proxy_Dialer) (proxy_Dialer, error)
|
||||
|
||||
// RegisterDialerType takes a URL scheme and a function to generate Dialers from
|
||||
// a URL with that scheme and a forwarding Dialer. Registered schemes are used
|
||||
// by FromURL.
|
||||
func proxy_RegisterDialerType(scheme string, f func(*url.URL, proxy_Dialer) (proxy_Dialer, error)) {
|
||||
if proxy_proxySchemes == nil {
|
||||
proxy_proxySchemes = make(map[string]func(*url.URL, proxy_Dialer) (proxy_Dialer, error))
|
||||
}
|
||||
proxy_proxySchemes[scheme] = f
|
||||
}
|
||||
|
||||
// FromURL returns a Dialer given a URL specification and an underlying
|
||||
// Dialer for it to make network requests.
|
||||
func proxy_FromURL(u *url.URL, forward proxy_Dialer) (proxy_Dialer, error) {
|
||||
var auth *proxy_Auth
|
||||
if u.User != nil {
|
||||
auth = new(proxy_Auth)
|
||||
auth.User = u.User.Username()
|
||||
if p, ok := u.User.Password(); ok {
|
||||
auth.Password = p
|
||||
}
|
||||
}
|
||||
|
||||
switch u.Scheme {
|
||||
case "socks5":
|
||||
return proxy_SOCKS5("tcp", u.Host, auth, forward)
|
||||
}
|
||||
|
||||
// If the scheme doesn't match any of the built-in schemes, see if it
|
||||
// was registered by another package.
|
||||
if proxy_proxySchemes != nil {
|
||||
if f, ok := proxy_proxySchemes[u.Scheme]; ok {
|
||||
return f(u, forward)
|
||||
}
|
||||
}
|
||||
|
||||
return nil, errors.New("proxy: unknown scheme: " + u.Scheme)
|
||||
}
|
||||
|
||||
var (
|
||||
proxy_allProxyEnv = &proxy_envOnce{
|
||||
names: []string{"ALL_PROXY", "all_proxy"},
|
||||
}
|
||||
proxy_noProxyEnv = &proxy_envOnce{
|
||||
names: []string{"NO_PROXY", "no_proxy"},
|
||||
}
|
||||
)
|
||||
|
||||
// envOnce looks up an environment variable (optionally by multiple
|
||||
// names) once. It mitigates expensive lookups on some platforms
|
||||
// (e.g. Windows).
|
||||
// (Borrowed from net/http/transport.go)
|
||||
type proxy_envOnce struct {
|
||||
names []string
|
||||
once sync.Once
|
||||
val string
|
||||
}
|
||||
|
||||
func (e *proxy_envOnce) Get() string {
|
||||
e.once.Do(e.init)
|
||||
return e.val
|
||||
}
|
||||
|
||||
func (e *proxy_envOnce) init() {
|
||||
for _, n := range e.names {
|
||||
e.val = os.Getenv(n)
|
||||
if e.val != "" {
|
||||
return
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// SOCKS5 returns a Dialer that makes SOCKSv5 connections to the given address
|
||||
// with an optional username and password. See RFC 1928 and RFC 1929.
|
||||
func proxy_SOCKS5(network, addr string, auth *proxy_Auth, forward proxy_Dialer) (proxy_Dialer, error) {
|
||||
s := &proxy_socks5{
|
||||
network: network,
|
||||
addr: addr,
|
||||
forward: forward,
|
||||
}
|
||||
if auth != nil {
|
||||
s.user = auth.User
|
||||
s.password = auth.Password
|
||||
}
|
||||
|
||||
return s, nil
|
||||
}
|
||||
|
||||
type proxy_socks5 struct {
|
||||
user, password string
|
||||
network, addr string
|
||||
forward proxy_Dialer
|
||||
}
|
||||
|
||||
const proxy_socks5Version = 5
|
||||
|
||||
const (
|
||||
proxy_socks5AuthNone = 0
|
||||
proxy_socks5AuthPassword = 2
|
||||
)
|
||||
|
||||
const proxy_socks5Connect = 1
|
||||
|
||||
const (
|
||||
proxy_socks5IP4 = 1
|
||||
proxy_socks5Domain = 3
|
||||
proxy_socks5IP6 = 4
|
||||
)
|
||||
|
||||
var proxy_socks5Errors = []string{
|
||||
"",
|
||||
"general failure",
|
||||
"connection forbidden",
|
||||
"network unreachable",
|
||||
"host unreachable",
|
||||
"connection refused",
|
||||
"TTL expired",
|
||||
"command not supported",
|
||||
"address type not supported",
|
||||
}
|
||||
|
||||
// Dial connects to the address addr on the given network via the SOCKS5 proxy.
|
||||
func (s *proxy_socks5) Dial(network, addr string) (net.Conn, error) {
|
||||
switch network {
|
||||
case "tcp", "tcp6", "tcp4":
|
||||
default:
|
||||
return nil, errors.New("proxy: no support for SOCKS5 proxy connections of type " + network)
|
||||
}
|
||||
|
||||
conn, err := s.forward.Dial(s.network, s.addr)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
if err := s.connect(conn, addr); err != nil {
|
||||
conn.Close()
|
||||
return nil, err
|
||||
}
|
||||
return conn, nil
|
||||
}
|
||||
|
||||
// connect takes an existing connection to a socks5 proxy server,
|
||||
// and commands the server to extend that connection to target,
|
||||
// which must be a canonical address with a host and port.
|
||||
func (s *proxy_socks5) connect(conn net.Conn, target string) error {
|
||||
host, portStr, err := net.SplitHostPort(target)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
port, err := strconv.Atoi(portStr)
|
||||
if err != nil {
|
||||
return errors.New("proxy: failed to parse port number: " + portStr)
|
||||
}
|
||||
if port < 1 || port > 0xffff {
|
||||
return errors.New("proxy: port number out of range: " + portStr)
|
||||
}
|
||||
|
||||
// the size here is just an estimate
|
||||
buf := make([]byte, 0, 6+len(host))
|
||||
|
||||
buf = append(buf, proxy_socks5Version)
|
||||
if len(s.user) > 0 && len(s.user) < 256 && len(s.password) < 256 {
|
||||
buf = append(buf, 2 /* num auth methods */, proxy_socks5AuthNone, proxy_socks5AuthPassword)
|
||||
} else {
|
||||
buf = append(buf, 1 /* num auth methods */, proxy_socks5AuthNone)
|
||||
}
|
||||
|
||||
if _, err := conn.Write(buf); err != nil {
|
||||
return errors.New("proxy: failed to write greeting to SOCKS5 proxy at " + s.addr + ": " + err.Error())
|
||||
}
|
||||
|
||||
if _, err := io.ReadFull(conn, buf[:2]); err != nil {
|
||||
return errors.New("proxy: failed to read greeting from SOCKS5 proxy at " + s.addr + ": " + err.Error())
|
||||
}
|
||||
if buf[0] != 5 {
|
||||
return errors.New("proxy: SOCKS5 proxy at " + s.addr + " has unexpected version " + strconv.Itoa(int(buf[0])))
|
||||
}
|
||||
if buf[1] == 0xff {
|
||||
return errors.New("proxy: SOCKS5 proxy at " + s.addr + " requires authentication")
|
||||
}
|
||||
|
||||
// See RFC 1929
|
||||
if buf[1] == proxy_socks5AuthPassword {
|
||||
buf = buf[:0]
|
||||
buf = append(buf, 1 /* password protocol version */)
|
||||
buf = append(buf, uint8(len(s.user)))
|
||||
buf = append(buf, s.user...)
|
||||
buf = append(buf, uint8(len(s.password)))
|
||||
buf = append(buf, s.password...)
|
||||
|
||||
if _, err := conn.Write(buf); err != nil {
|
||||
return errors.New("proxy: failed to write authentication request to SOCKS5 proxy at " + s.addr + ": " + err.Error())
|
||||
}
|
||||
|
||||
if _, err := io.ReadFull(conn, buf[:2]); err != nil {
|
||||
return errors.New("proxy: failed to read authentication reply from SOCKS5 proxy at " + s.addr + ": " + err.Error())
|
||||
}
|
||||
|
||||
if buf[1] != 0 {
|
||||
return errors.New("proxy: SOCKS5 proxy at " + s.addr + " rejected username/password")
|
||||
}
|
||||
}
|
||||
|
||||
buf = buf[:0]
|
||||
buf = append(buf, proxy_socks5Version, proxy_socks5Connect, 0 /* reserved */)
|
||||
|
||||
if ip := net.ParseIP(host); ip != nil {
|
||||
if ip4 := ip.To4(); ip4 != nil {
|
||||
buf = append(buf, proxy_socks5IP4)
|
||||
ip = ip4
|
||||
} else {
|
||||
buf = append(buf, proxy_socks5IP6)
|
||||
}
|
||||
buf = append(buf, ip...)
|
||||
} else {
|
||||
if len(host) > 255 {
|
||||
return errors.New("proxy: destination host name too long: " + host)
|
||||
}
|
||||
buf = append(buf, proxy_socks5Domain)
|
||||
buf = append(buf, byte(len(host)))
|
||||
buf = append(buf, host...)
|
||||
}
|
||||
buf = append(buf, byte(port>>8), byte(port))
|
||||
|
||||
if _, err := conn.Write(buf); err != nil {
|
||||
return errors.New("proxy: failed to write connect request to SOCKS5 proxy at " + s.addr + ": " + err.Error())
|
||||
}
|
||||
|
||||
if _, err := io.ReadFull(conn, buf[:4]); err != nil {
|
||||
return errors.New("proxy: failed to read connect reply from SOCKS5 proxy at " + s.addr + ": " + err.Error())
|
||||
}
|
||||
|
||||
failure := "unknown error"
|
||||
if int(buf[1]) < len(proxy_socks5Errors) {
|
||||
failure = proxy_socks5Errors[buf[1]]
|
||||
}
|
||||
|
||||
if len(failure) > 0 {
|
||||
return errors.New("proxy: SOCKS5 proxy at " + s.addr + " failed to connect: " + failure)
|
||||
}
|
||||
|
||||
bytesToDiscard := 0
|
||||
switch buf[3] {
|
||||
case proxy_socks5IP4:
|
||||
bytesToDiscard = net.IPv4len
|
||||
case proxy_socks5IP6:
|
||||
bytesToDiscard = net.IPv6len
|
||||
case proxy_socks5Domain:
|
||||
_, err := io.ReadFull(conn, buf[:1])
|
||||
if err != nil {
|
||||
return errors.New("proxy: failed to read domain length from SOCKS5 proxy at " + s.addr + ": " + err.Error())
|
||||
}
|
||||
bytesToDiscard = int(buf[0])
|
||||
default:
|
||||
return errors.New("proxy: got unknown address type " + strconv.Itoa(int(buf[3])) + " from SOCKS5 proxy at " + s.addr)
|
||||
}
|
||||
|
||||
if cap(buf) < bytesToDiscard {
|
||||
buf = make([]byte, bytesToDiscard)
|
||||
} else {
|
||||
buf = buf[:bytesToDiscard]
|
||||
}
|
||||
if _, err := io.ReadFull(conn, buf); err != nil {
|
||||
return errors.New("proxy: failed to read address from SOCKS5 proxy at " + s.addr + ": " + err.Error())
|
||||
}
|
||||
|
||||
// Also need to discard the port number
|
||||
if _, err := io.ReadFull(conn, buf[:2]); err != nil {
|
||||
return errors.New("proxy: failed to read port from SOCKS5 proxy at " + s.addr + ": " + err.Error())
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
@ -0,0 +1,9 @@
|
||||
(The MIT License)
|
||||
|
||||
Copyright (c) 2017 marvin + konsorten GmbH (open-source@konsorten.de)
|
||||
|
||||
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the 'Software'), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
|
||||
|
||||
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
|
||||
|
||||
THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
@ -0,0 +1,41 @@
|
||||
# Windows Terminal Sequences
|
||||
|
||||
This library allow for enabling Windows terminal color support for Go.
|
||||
|
||||
See [Console Virtual Terminal Sequences](https://docs.microsoft.com/en-us/windows/console/console-virtual-terminal-sequences) for details.
|
||||
|
||||
## Usage
|
||||
|
||||
```go
|
||||
import (
|
||||
"syscall"
|
||||
|
||||
sequences "github.com/konsorten/go-windows-terminal-sequences"
|
||||
)
|
||||
|
||||
func main() {
|
||||
sequences.EnableVirtualTerminalProcessing(syscall.Stdout, true)
|
||||
}
|
||||
|
||||
```
|
||||
|
||||
## Authors
|
||||
|
||||
The tool is sponsored by the [marvin + konsorten GmbH](http://www.konsorten.de).
|
||||
|
||||
We thank all the authors who provided code to this library:
|
||||
|
||||
* Felix Kollmann
|
||||
* Nicolas Perraut
|
||||
|
||||
## License
|
||||
|
||||
(The MIT License)
|
||||
|
||||
Copyright (c) 2018 marvin + konsorten GmbH (open-source@konsorten.de)
|
||||
|
||||
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the 'Software'), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
|
||||
|
||||
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
|
||||
|
||||
THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
@ -0,0 +1 @@
|
||||
module github.com/konsorten/go-windows-terminal-sequences
|
@ -0,0 +1,36 @@
|
||||
// +build windows
|
||||
|
||||
package sequences
|
||||
|
||||
import (
|
||||
"syscall"
|
||||
"unsafe"
|
||||
)
|
||||
|
||||
var (
|
||||
kernel32Dll *syscall.LazyDLL = syscall.NewLazyDLL("Kernel32.dll")
|
||||
setConsoleMode *syscall.LazyProc = kernel32Dll.NewProc("SetConsoleMode")
|
||||
)
|
||||
|
||||
func EnableVirtualTerminalProcessing(stream syscall.Handle, enable bool) error {
|
||||
const ENABLE_VIRTUAL_TERMINAL_PROCESSING uint32 = 0x4
|
||||
|
||||
var mode uint32
|
||||
err := syscall.GetConsoleMode(syscall.Stdout, &mode)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
if enable {
|
||||
mode |= ENABLE_VIRTUAL_TERMINAL_PROCESSING
|
||||
} else {
|
||||
mode &^= ENABLE_VIRTUAL_TERMINAL_PROCESSING
|
||||
}
|
||||
|
||||
ret, _, err := setConsoleMode.Call(uintptr(unsafe.Pointer(stream)), uintptr(mode))
|
||||
if ret == 0 {
|
||||
return err
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
@ -0,0 +1,11 @@
|
||||
// +build linux darwin
|
||||
|
||||
package sequences
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
)
|
||||
|
||||
func EnableVirtualTerminalProcessing(stream uintptr, enable bool) error {
|
||||
return fmt.Errorf("windows only package")
|
||||
}
|
@ -0,0 +1,2 @@
|
||||
logrus
|
||||
vendor
|
@ -0,0 +1,25 @@
|
||||
language: go
|
||||
go_import_path: github.com/sirupsen/logrus
|
||||
git:
|
||||
depth: 1
|
||||
env:
|
||||
- GO111MODULE=on
|
||||
- GO111MODULE=off
|
||||
go: [ 1.11.x, 1.12.x ]
|
||||
os: [ linux, osx ]
|
||||
matrix:
|
||||
exclude:
|
||||
- go: 1.12.x
|
||||
env: GO111MODULE=off
|
||||
- go: 1.11.x
|
||||
os: osx
|
||||
install:
|
||||
- ./travis/install.sh
|
||||
- if [[ "$GO111MODULE" == "on" ]]; then go mod download; fi
|
||||
- if [[ "$GO111MODULE" == "off" ]]; then go get github.com/stretchr/testify/assert golang.org/x/sys/unix github.com/konsorten/go-windows-terminal-sequences; fi
|
||||
script:
|
||||
- ./travis/cross_build.sh
|
||||
- export GOMAXPROCS=4
|
||||
- export GORACE=halt_on_error=1
|
||||
- go test -race -v ./...
|
||||
- if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then go test -race -v -tags appengine ./... ; fi
|
@ -0,0 +1,200 @@
|
||||
# 1.4.2
|
||||
* Fixes build break for plan9, nacl, solaris
|
||||
# 1.4.1
|
||||
This new release introduces:
|
||||
* Enhance TextFormatter to not print caller information when they are empty (#944)
|
||||
* Remove dependency on golang.org/x/crypto (#932, #943)
|
||||
|
||||
Fixes:
|
||||
* Fix Entry.WithContext method to return a copy of the initial entry (#941)
|
||||
|
||||
# 1.4.0
|
||||
This new release introduces:
|
||||
* Add `DeferExitHandler`, similar to `RegisterExitHandler` but prepending the handler to the list of handlers (semantically like `defer`) (#848).
|
||||
* Add `CallerPrettyfier` to `JSONFormatter` and `TextFormatter (#909, #911)
|
||||
* Add `Entry.WithContext()` and `Entry.Context`, to set a context on entries to be used e.g. in hooks (#919).
|
||||
|
||||
Fixes:
|
||||
* Fix wrong method calls `Logger.Print` and `Logger.Warningln` (#893).
|
||||
* Update `Entry.Logf` to not do string formatting unless the log level is enabled (#903)
|
||||
* Fix infinite recursion on unknown `Level.String()` (#907)
|
||||
* Fix race condition in `getCaller` (#916).
|
||||
|
||||
|
||||
# 1.3.0
|
||||
This new release introduces:
|
||||
* Log, Logf, Logln functions for Logger and Entry that take a Level
|
||||
|
||||
Fixes:
|
||||
* Building prometheus node_exporter on AIX (#840)
|
||||
* Race condition in TextFormatter (#468)
|
||||
* Travis CI import path (#868)
|
||||
* Remove coloured output on Windows (#862)
|
||||
* Pointer to func as field in JSONFormatter (#870)
|
||||
* Properly marshal Levels (#873)
|
||||
|
||||
# 1.2.0
|
||||
This new release introduces:
|
||||
* A new method `SetReportCaller` in the `Logger` to enable the file, line and calling function from which the trace has been issued
|
||||
* A new trace level named `Trace` whose level is below `Debug`
|
||||
* A configurable exit function to be called upon a Fatal trace
|
||||
* The `Level` object now implements `encoding.TextUnmarshaler` interface
|
||||
|
||||
# 1.1.1
|
||||
This is a bug fix release.
|
||||
* fix the build break on Solaris
|
||||
* don't drop a whole trace in JSONFormatter when a field param is a function pointer which can not be serialized
|
||||
|
||||
# 1.1.0
|
||||
This new release introduces:
|
||||
* several fixes:
|
||||
* a fix for a race condition on entry formatting
|
||||
* proper cleanup of previously used entries before putting them back in the pool
|
||||
* the extra new line at the end of message in text formatter has been removed
|
||||
* a new global public API to check if a level is activated: IsLevelEnabled
|
||||
* the following methods have been added to the Logger object
|
||||
* IsLevelEnabled
|
||||
* SetFormatter
|
||||
* SetOutput
|
||||
* ReplaceHooks
|
||||
* introduction of go module
|
||||
* an indent configuration for the json formatter
|
||||
* output colour support for windows
|
||||
* the field sort function is now configurable for text formatter
|
||||
* the CLICOLOR and CLICOLOR\_FORCE environment variable support in text formater
|
||||
|
||||
# 1.0.6
|
||||
|
||||
This new release introduces:
|
||||
* a new api WithTime which allows to easily force the time of the log entry
|
||||
which is mostly useful for logger wrapper
|
||||
* a fix reverting the immutability of the entry given as parameter to the hooks
|
||||
a new configuration field of the json formatter in order to put all the fields
|
||||
in a nested dictionnary
|
||||
* a new SetOutput method in the Logger
|
||||
* a new configuration of the textformatter to configure the name of the default keys
|
||||
* a new configuration of the text formatter to disable the level truncation
|
||||
|
||||
# 1.0.5
|
||||
|
||||
* Fix hooks race (#707)
|
||||
* Fix panic deadlock (#695)
|
||||
|
||||
# 1.0.4
|
||||
|
||||
* Fix race when adding hooks (#612)
|
||||
* Fix terminal check in AppEngine (#635)
|
||||
|
||||
# 1.0.3
|
||||
|
||||
* Replace example files with testable examples
|
||||
|
||||
# 1.0.2
|
||||
|
||||
* bug: quote non-string values in text formatter (#583)
|
||||
* Make (*Logger) SetLevel a public method
|
||||
|
||||
# 1.0.1
|
||||
|
||||
* bug: fix escaping in text formatter (#575)
|
||||
|
||||
# 1.0.0
|
||||
|
||||
* Officially changed name to lower-case
|
||||
* bug: colors on Windows 10 (#541)
|
||||
* bug: fix race in accessing level (#512)
|
||||
|
||||
# 0.11.5
|
||||
|
||||
* feature: add writer and writerlevel to entry (#372)
|
||||
|
||||
# 0.11.4
|
||||
|
||||
* bug: fix undefined variable on solaris (#493)
|
||||
|
||||
# 0.11.3
|
||||
|
||||
* formatter: configure quoting of empty values (#484)
|
||||
* formatter: configure quoting character (default is `"`) (#484)
|
||||
* bug: fix not importing io correctly in non-linux environments (#481)
|
||||
|
||||
# 0.11.2
|
||||
|
||||
* bug: fix windows terminal detection (#476)
|
||||
|
||||
# 0.11.1
|
||||
|
||||
* bug: fix tty detection with custom out (#471)
|
||||
|
||||
# 0.11.0
|
||||
|
||||
* performance: Use bufferpool to allocate (#370)
|
||||
* terminal: terminal detection for app-engine (#343)
|
||||
* feature: exit handler (#375)
|
||||
|
||||
# 0.10.0
|
||||
|
||||
* feature: Add a test hook (#180)
|
||||
* feature: `ParseLevel` is now case-insensitive (#326)
|
||||
* feature: `FieldLogger` interface that generalizes `Logger` and `Entry` (#308)
|
||||
* performance: avoid re-allocations on `WithFields` (#335)
|
||||
|
||||
# 0.9.0
|
||||
|
||||
* logrus/text_formatter: don't emit empty msg
|
||||
* logrus/hooks/airbrake: move out of main repository
|
||||
* logrus/hooks/sentry: move out of main repository
|
||||
* logrus/hooks/papertrail: move out of main repository
|
||||
* logrus/hooks/bugsnag: move out of main repository
|
||||
* logrus/core: run tests with `-race`
|
||||
* logrus/core: detect TTY based on `stderr`
|
||||
* logrus/core: support `WithError` on logger
|
||||
* logrus/core: Solaris support
|
||||
|
||||
# 0.8.7
|
||||
|
||||
* logrus/core: fix possible race (#216)
|
||||
* logrus/doc: small typo fixes and doc improvements
|
||||
|
||||
|
||||
# 0.8.6
|
||||
|
||||
* hooks/raven: allow passing an initialized client
|
||||
|
||||
# 0.8.5
|
||||
|
||||
* logrus/core: revert #208
|
||||
|
||||
# 0.8.4
|
||||
|
||||
* formatter/text: fix data race (#218)
|
||||
|
||||
# 0.8.3
|
||||
|
||||
* logrus/core: fix entry log level (#208)
|
||||
* logrus/core: improve performance of text formatter by 40%
|
||||
* logrus/core: expose `LevelHooks` type
|
||||
* logrus/core: add support for DragonflyBSD and NetBSD
|
||||
* formatter/text: print structs more verbosely
|
||||
|
||||
# 0.8.2
|
||||
|
||||
* logrus: fix more Fatal family functions
|
||||
|
||||
# 0.8.1
|
||||
|
||||
* logrus: fix not exiting on `Fatalf` and `Fatalln`
|
||||
|
||||
# 0.8.0
|
||||
|
||||
* logrus: defaults to stderr instead of stdout
|
||||
* hooks/sentry: add special field for `*http.Request`
|
||||
* formatter/text: ignore Windows for colors
|
||||
|
||||
# 0.7.3
|
||||
|
||||
* formatter/\*: allow configuration of timestamp layout
|
||||
|
||||
# 0.7.2
|
||||
|
||||
* formatter/text: Add configuration option for time format (#158)
|
@ -0,0 +1,21 @@
|
||||
The MIT License (MIT)
|
||||
|
||||
Copyright (c) 2014 Simon Eskildsen
|
||||
|
||||
Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||
of this software and associated documentation files (the "Software"), to deal
|
||||
in the Software without restriction, including without limitation the rights
|
||||
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||
copies of the Software, and to permit persons to whom the Software is
|
||||
furnished to do so, subject to the following conditions:
|
||||
|
||||
The above copyright notice and this permission notice shall be included in
|
||||
all copies or substantial portions of the Software.
|
||||
|
||||
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
||||
THE SOFTWARE.
|
@ -0,0 +1,495 @@
|
||||
# Logrus <img src="http://i.imgur.com/hTeVwmJ.png" width="40" height="40" alt=":walrus:" class="emoji" title=":walrus:"/> [![Build Status](https://travis-ci.org/sirupsen/logrus.svg?branch=master)](https://travis-ci.org/sirupsen/logrus) [![GoDoc](https://godoc.org/github.com/sirupsen/logrus?status.svg)](https://godoc.org/github.com/sirupsen/logrus)
|
||||
|
||||
Logrus is a structured logger for Go (golang), completely API compatible with
|
||||
the standard library logger.
|
||||
|
||||
**Seeing weird case-sensitive problems?** It's in the past been possible to
|
||||
import Logrus as both upper- and lower-case. Due to the Go package environment,
|
||||
this caused issues in the community and we needed a standard. Some environments
|
||||
experienced problems with the upper-case variant, so the lower-case was decided.
|
||||
Everything using `logrus` will need to use the lower-case:
|
||||
`github.com/sirupsen/logrus`. Any package that isn't, should be changed.
|
||||
|
||||
To fix Glide, see [these
|
||||
comments](https://github.com/sirupsen/logrus/issues/553#issuecomment-306591437).
|
||||
For an in-depth explanation of the casing issue, see [this
|
||||
comment](https://github.com/sirupsen/logrus/issues/570#issuecomment-313933276).
|
||||
|
||||
**Are you interested in assisting in maintaining Logrus?** Currently I have a
|
||||
lot of obligations, and I am unable to provide Logrus with the maintainership it
|
||||
needs. If you'd like to help, please reach out to me at `simon at author's
|
||||
username dot com`.
|
||||
|
||||
Nicely color-coded in development (when a TTY is attached, otherwise just
|
||||
plain text):
|
||||
|
||||
![Colored](http://i.imgur.com/PY7qMwd.png)
|
||||
|
||||
With `log.SetFormatter(&log.JSONFormatter{})`, for easy parsing by logstash
|
||||
or Splunk:
|
||||
|
||||
```json
|
||||
{"animal":"walrus","level":"info","msg":"A group of walrus emerges from the
|
||||
ocean","size":10,"time":"2014-03-10 19:57:38.562264131 -0400 EDT"}
|
||||
|
||||
{"level":"warning","msg":"The group's number increased tremendously!",
|
||||
"number":122,"omg":true,"time":"2014-03-10 19:57:38.562471297 -0400 EDT"}
|
||||
|
||||
{"animal":"walrus","level":"info","msg":"A giant walrus appears!",
|
||||
"size":10,"time":"2014-03-10 19:57:38.562500591 -0400 EDT"}
|
||||
|
||||
{"animal":"walrus","level":"info","msg":"Tremendously sized cow enters the ocean.",
|
||||
"size":9,"time":"2014-03-10 19:57:38.562527896 -0400 EDT"}
|
||||
|
||||
{"level":"fatal","msg":"The ice breaks!","number":100,"omg":true,
|
||||
"time":"2014-03-10 19:57:38.562543128 -0400 EDT"}
|
||||
```
|
||||
|
||||
With the default `log.SetFormatter(&log.TextFormatter{})` when a TTY is not
|
||||
attached, the output is compatible with the
|
||||
[logfmt](http://godoc.org/github.com/kr/logfmt) format:
|
||||
|
||||
```text
|
||||
time="2015-03-26T01:27:38-04:00" level=debug msg="Started observing beach" animal=walrus number=8
|
||||
time="2015-03-26T01:27:38-04:00" level=info msg="A group of walrus emerges from the ocean" animal=walrus size=10
|
||||
time="2015-03-26T01:27:38-04:00" level=warning msg="The group's number increased tremendously!" number=122 omg=true
|
||||
time="2015-03-26T01:27:38-04:00" level=debug msg="Temperature changes" temperature=-4
|
||||
time="2015-03-26T01:27:38-04:00" level=panic msg="It's over 9000!" animal=orca size=9009
|
||||
time="2015-03-26T01:27:38-04:00" level=fatal msg="The ice breaks!" err=&{0x2082280c0 map[animal:orca size:9009] 2015-03-26 01:27:38.441574009 -0400 EDT panic It's over 9000!} number=100 omg=true
|
||||
```
|
||||
To ensure this behaviour even if a TTY is attached, set your formatter as follows:
|
||||
|
||||
```go
|
||||
log.SetFormatter(&log.TextFormatter{
|
||||
DisableColors: true,
|
||||
FullTimestamp: true,
|
||||
})
|
||||
```
|
||||
|
||||
#### Logging Method Name
|
||||
|
||||
If you wish to add the calling method as a field, instruct the logger via:
|
||||
```go
|
||||
log.SetReportCaller(true)
|
||||
```
|
||||
This adds the caller as 'method' like so:
|
||||
|
||||
```json
|
||||
{"animal":"penguin","level":"fatal","method":"github.com/sirupsen/arcticcreatures.migrate","msg":"a penguin swims by",
|
||||
"time":"2014-03-10 19:57:38.562543129 -0400 EDT"}
|
||||
```
|
||||
|
||||
```text
|
||||
time="2015-03-26T01:27:38-04:00" level=fatal method=github.com/sirupsen/arcticcreatures.migrate msg="a penguin swims by" animal=penguin
|
||||
```
|
||||
Note that this does add measurable overhead - the cost will depend on the version of Go, but is
|
||||
between 20 and 40% in recent tests with 1.6 and 1.7. You can validate this in your
|
||||
environment via benchmarks:
|
||||
```
|
||||
go test -bench=.*CallerTracing
|
||||
```
|
||||
|
||||
|
||||
#### Case-sensitivity
|
||||
|
||||
The organization's name was changed to lower-case--and this will not be changed
|
||||
back. If you are getting import conflicts due to case sensitivity, please use
|
||||
the lower-case import: `github.com/sirupsen/logrus`.
|
||||
|
||||
#### Example
|
||||
|
||||
The simplest way to use Logrus is simply the package-level exported logger:
|
||||
|
||||
```go
|
||||
package main
|
||||
|
||||
import (
|
||||
log "github.com/sirupsen/logrus"
|
||||
)
|
||||
|
||||
func main() {
|
||||
log.WithFields(log.Fields{
|
||||
"animal": "walrus",
|
||||
}).Info("A walrus appears")
|
||||
}
|
||||
```
|
||||
|
||||
Note that it's completely api-compatible with the stdlib logger, so you can
|
||||
replace your `log` imports everywhere with `log "github.com/sirupsen/logrus"`
|
||||
and you'll now have the flexibility of Logrus. You can customize it all you
|
||||
want:
|
||||
|
||||
```go
|
||||
package main
|
||||
|
||||
import (
|
||||
"os"
|
||||
log "github.com/sirupsen/logrus"
|
||||
)
|
||||
|
||||
func init() {
|
||||
// Log as JSON instead of the default ASCII formatter.
|
||||
log.SetFormatter(&log.JSONFormatter{})
|
||||
|
||||
// Output to stdout instead of the default stderr
|
||||
// Can be any io.Writer, see below for File example
|
||||
log.SetOutput(os.Stdout)
|
||||
|
||||
// Only log the warning severity or above.
|
||||
log.SetLevel(log.WarnLevel)
|
||||
}
|
||||
|
||||
func main() {
|
||||
log.WithFields(log.Fields{
|
||||
"animal": "walrus",
|
||||
"size": 10,
|
||||
}).Info("A group of walrus emerges from the ocean")
|
||||
|
||||
log.WithFields(log.Fields{
|
||||
"omg": true,
|
||||
"number": 122,
|
||||
}).Warn("The group's number increased tremendously!")
|
||||
|
||||
log.WithFields(log.Fields{
|
||||
"omg": true,
|
||||
"number": 100,
|
||||
}).Fatal("The ice breaks!")
|
||||
|
||||
// A common pattern is to re-use fields between logging statements by re-using
|
||||
// the logrus.Entry returned from WithFields()
|
||||
contextLogger := log.WithFields(log.Fields{
|
||||
"common": "this is a common field",
|
||||
"other": "I also should be logged always",
|
||||
})
|
||||
|
||||
contextLogger.Info("I'll be logged with common and other field")
|
||||
contextLogger.Info("Me too")
|
||||
}
|
||||
```
|
||||
|
||||
For more advanced usage such as logging to multiple locations from the same
|
||||
application, you can also create an instance of the `logrus` Logger:
|
||||
|
||||
```go
|
||||
package main
|
||||
|
||||
import (
|
||||
"os"
|
||||
"github.com/sirupsen/logrus"
|
||||
)
|
||||
|
||||
// Create a new instance of the logger. You can have any number of instances.
|
||||
var log = logrus.New()
|
||||
|
||||
func main() {
|
||||
// The API for setting attributes is a little different than the package level
|
||||
// exported logger. See Godoc.
|
||||
log.Out = os.Stdout
|
||||
|
||||
// You could set this to any `io.Writer` such as a file
|
||||
// file, err := os.OpenFile("logrus.log", os.O_CREATE|os.O_WRONLY, 0666)
|
||||
// if err == nil {
|
||||
// log.Out = file
|
||||
// } else {
|
||||
// log.Info("Failed to log to file, using default stderr")
|
||||
// }
|
||||
|
||||
log.WithFields(logrus.Fields{
|
||||
"animal": "walrus",
|
||||
"size": 10,
|
||||
}).Info("A group of walrus emerges from the ocean")
|
||||
}
|
||||
```
|
||||
|
||||
#### Fields
|
||||
|
||||
Logrus encourages careful, structured logging through logging fields instead of
|
||||
long, unparseable error messages. For example, instead of: `log.Fatalf("Failed
|
||||
to send event %s to topic %s with key %d")`, you should log the much more
|
||||
discoverable:
|
||||
|
||||
```go
|
||||
log.WithFields(log.Fields{
|
||||
"event": event,
|
||||
"topic": topic,
|
||||
"key": key,
|
||||
}).Fatal("Failed to send event")
|
||||
```
|
||||
|
||||
We've found this API forces you to think about logging in a way that produces
|
||||
much more useful logging messages. We've been in countless situations where just
|
||||
a single added field to a log statement that was already there would've saved us
|
||||
hours. The `WithFields` call is optional.
|
||||
|
||||
In general, with Logrus using any of the `printf`-family functions should be
|
||||
seen as a hint you should add a field, however, you can still use the
|
||||
`printf`-family functions with Logrus.
|
||||
|
||||
#### Default Fields
|
||||
|
||||
Often it's helpful to have fields _always_ attached to log statements in an
|
||||
application or parts of one. For example, you may want to always log the
|
||||
`request_id` and `user_ip` in the context of a request. Instead of writing
|
||||
`log.WithFields(log.Fields{"request_id": request_id, "user_ip": user_ip})` on
|
||||
every line, you can create a `logrus.Entry` to pass around instead:
|
||||
|
||||
```go
|
||||
requestLogger := log.WithFields(log.Fields{"request_id": request_id, "user_ip": user_ip})
|
||||
requestLogger.Info("something happened on that request") # will log request_id and user_ip
|
||||
requestLogger.Warn("something not great happened")
|
||||
```
|
||||
|
||||
#### Hooks
|
||||
|
||||
You can add hooks for logging levels. For example to send errors to an exception
|
||||
tracking service on `Error`, `Fatal` and `Panic`, info to StatsD or log to
|
||||
multiple places simultaneously, e.g. syslog.
|
||||
|
||||
Logrus comes with [built-in hooks](hooks/). Add those, or your custom hook, in
|
||||
`init`:
|
||||
|
||||
```go
|
||||
import (
|
||||
log "github.com/sirupsen/logrus"
|
||||
"gopkg.in/gemnasium/logrus-airbrake-hook.v2" // the package is named "airbrake"
|
||||
logrus_syslog "github.com/sirupsen/logrus/hooks/syslog"
|
||||
"log/syslog"
|
||||
)
|
||||
|
||||
func init() {
|
||||
|
||||
// Use the Airbrake hook to report errors that have Error severity or above to
|
||||
// an exception tracker. You can create custom hooks, see the Hooks section.
|
||||
log.AddHook(airbrake.NewHook(123, "xyz", "production"))
|
||||
|
||||
hook, err := logrus_syslog.NewSyslogHook("udp", "localhost:514", syslog.LOG_INFO, "")
|
||||
if err != nil {
|
||||
log.Error("Unable to connect to local syslog daemon")
|
||||
} else {
|
||||
log.AddHook(hook)
|
||||
}
|
||||
}
|
||||
```
|
||||
Note: Syslog hook also support connecting to local syslog (Ex. "/dev/log" or "/var/run/syslog" or "/var/run/log"). For the detail, please check the [syslog hook README](hooks/syslog/README.md).
|
||||
|
||||
A list of currently known of service hook can be found in this wiki [page](https://github.com/sirupsen/logrus/wiki/Hooks)
|
||||
|
||||
|
||||
#### Level logging
|
||||
|
||||
Logrus has seven logging levels: Trace, Debug, Info, Warning, Error, Fatal and Panic.
|
||||
|
||||
```go
|
||||
log.Trace("Something very low level.")
|
||||
log.Debug("Useful debugging information.")
|
||||
log.Info("Something noteworthy happened!")
|
||||
log.Warn("You should probably take a look at this.")
|
||||
log.Error("Something failed but I'm not quitting.")
|
||||
// Calls os.Exit(1) after logging
|
||||
log.Fatal("Bye.")
|
||||
// Calls panic() after logging
|
||||
log.Panic("I'm bailing.")
|
||||
```
|
||||
|
||||
You can set the logging level on a `Logger`, then it will only log entries with
|
||||
that severity or anything above it:
|
||||
|
||||
```go
|
||||
// Will log anything that is info or above (warn, error, fatal, panic). Default.
|
||||
log.SetLevel(log.InfoLevel)
|
||||
```
|
||||
|
||||
It may be useful to set `log.Level = logrus.DebugLevel` in a debug or verbose
|
||||
environment if your application has that.
|
||||
|
||||
#### Entries
|
||||
|
||||
Besides the fields added with `WithField` or `WithFields` some fields are
|
||||
automatically added to all logging events:
|
||||
|
||||
1. `time`. The timestamp when the entry was created.
|
||||
2. `msg`. The logging message passed to `{Info,Warn,Error,Fatal,Panic}` after
|
||||
the `AddFields` call. E.g. `Failed to send event.`
|
||||
3. `level`. The logging level. E.g. `info`.
|
||||
|
||||
#### Environments
|
||||
|
||||
Logrus has no notion of environment.
|
||||
|
||||
If you wish for hooks and formatters to only be used in specific environments,
|
||||
you should handle that yourself. For example, if your application has a global
|
||||
variable `Environment`, which is a string representation of the environment you
|
||||
could do:
|
||||
|
||||
```go
|
||||
import (
|
||||
log "github.com/sirupsen/logrus"
|
||||
)
|
||||
|
||||
init() {
|
||||
// do something here to set environment depending on an environment variable
|
||||
// or command-line flag
|
||||
if Environment == "production" {
|
||||
log.SetFormatter(&log.JSONFormatter{})
|
||||
} else {
|
||||
// The TextFormatter is default, you don't actually have to do this.
|
||||
log.SetFormatter(&log.TextFormatter{})
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
This configuration is how `logrus` was intended to be used, but JSON in
|
||||
production is mostly only useful if you do log aggregation with tools like
|
||||
Splunk or Logstash.
|
||||
|
||||
#### Formatters
|
||||
|
||||
The built-in logging formatters are:
|
||||
|
||||
* `logrus.TextFormatter`. Logs the event in colors if stdout is a tty, otherwise
|
||||
without colors.
|
||||
* *Note:* to force colored output when there is no TTY, set the `ForceColors`
|
||||
field to `true`. To force no colored output even if there is a TTY set the
|
||||
`DisableColors` field to `true`. For Windows, see
|
||||
[github.com/mattn/go-colorable](https://github.com/mattn/go-colorable).
|
||||
* When colors are enabled, levels are truncated to 4 characters by default. To disable
|
||||
truncation set the `DisableLevelTruncation` field to `true`.
|
||||
* All options are listed in the [generated docs](https://godoc.org/github.com/sirupsen/logrus#TextFormatter).
|
||||
* `logrus.JSONFormatter`. Logs fields as JSON.
|
||||
* All options are listed in the [generated docs](https://godoc.org/github.com/sirupsen/logrus#JSONFormatter).
|
||||
|
||||
Third party logging formatters:
|
||||
|
||||
* [`FluentdFormatter`](https://github.com/joonix/log). Formats entries that can be parsed by Kubernetes and Google Container Engine.
|
||||
* [`GELF`](https://github.com/fabienm/go-logrus-formatters). Formats entries so they comply to Graylog's [GELF 1.1 specification](http://docs.graylog.org/en/2.4/pages/gelf.html).
|
||||
* [`logstash`](https://github.com/bshuster-repo/logrus-logstash-hook). Logs fields as [Logstash](http://logstash.net) Events.
|
||||
* [`prefixed`](https://github.com/x-cray/logrus-prefixed-formatter). Displays log entry source along with alternative layout.
|
||||
* [`zalgo`](https://github.com/aybabtme/logzalgo). Invoking the P͉̫o̳̼̊w̖͈̰͎e̬͔̭͂r͚̼̹̲ ̫͓͉̳͈ō̠͕͖̚f̝͍̠ ͕̲̞͖͑Z̖̫̤̫ͪa͉̬͈̗l͖͎g̳̥o̰̥̅!̣͔̲̻͊̄ ̙̘̦̹̦.
|
||||
* [`nested-logrus-formatter`](https://github.com/antonfisher/nested-logrus-formatter). Converts logrus fields to a nested structure.
|
||||
|
||||
You can define your formatter by implementing the `Formatter` interface,
|
||||
requiring a `Format` method. `Format` takes an `*Entry`. `entry.Data` is a
|
||||
`Fields` type (`map[string]interface{}`) with all your fields as well as the
|
||||
default ones (see Entries section above):
|
||||
|
||||
```go
|
||||
type MyJSONFormatter struct {
|
||||
}
|
||||
|
||||
log.SetFormatter(new(MyJSONFormatter))
|
||||
|
||||
func (f *MyJSONFormatter) Format(entry *Entry) ([]byte, error) {
|
||||
// Note this doesn't include Time, Level and Message which are available on
|
||||
// the Entry. Consult `godoc` on information about those fields or read the
|
||||
// source of the official loggers.
|
||||
serialized, err := json.Marshal(entry.Data)
|
||||
if err != nil {
|
||||
return nil, fmt.Errorf("Failed to marshal fields to JSON, %v", err)
|
||||
}
|
||||
return append(serialized, '\n'), nil
|
||||
}
|
||||
```
|
||||
|
||||
#### Logger as an `io.Writer`
|
||||
|
||||
Logrus can be transformed into an `io.Writer`. That writer is the end of an `io.Pipe` and it is your responsibility to close it.
|
||||
|
||||
```go
|
||||
w := logger.Writer()
|
||||
defer w.Close()
|
||||
|
||||
srv := http.Server{
|
||||
// create a stdlib log.Logger that writes to
|
||||
// logrus.Logger.
|
||||
ErrorLog: log.New(w, "", 0),
|
||||
}
|
||||
```
|
||||
|
||||
Each line written to that writer will be printed the usual way, using formatters
|
||||
and hooks. The level for those entries is `info`.
|
||||
|
||||
This means that we can override the standard library logger easily:
|
||||
|
||||
```go
|
||||
logger := logrus.New()
|
||||
logger.Formatter = &logrus.JSONFormatter{}
|
||||
|
||||
// Use logrus for standard log output
|
||||
// Note that `log` here references stdlib's log
|
||||
// Not logrus imported under the name `log`.
|
||||
log.SetOutput(logger.Writer())
|
||||
```
|
||||
|
||||
#### Rotation
|
||||
|
||||
Log rotation is not provided with Logrus. Log rotation should be done by an
|
||||
external program (like `logrotate(8)`) that can compress and delete old log
|
||||
entries. It should not be a feature of the application-level logger.
|
||||
|
||||
#### Tools
|
||||
|
||||
| Tool | Description |
|
||||
| ---- | ----------- |
|
||||
|[Logrus Mate](https://github.com/gogap/logrus_mate)|Logrus mate is a tool for Logrus to manage loggers, you can initial logger's level, hook and formatter by config file, the logger will generated with different config at different environment.|
|
||||
|[Logrus Viper Helper](https://github.com/heirko/go-contrib/tree/master/logrusHelper)|An Helper around Logrus to wrap with spf13/Viper to load configuration with fangs! And to simplify Logrus configuration use some behavior of [Logrus Mate](https://github.com/gogap/logrus_mate). [sample](https://github.com/heirko/iris-contrib/blob/master/middleware/logrus-logger/example) |
|
||||
|
||||
#### Testing
|
||||
|
||||
Logrus has a built in facility for asserting the presence of log messages. This is implemented through the `test` hook and provides:
|
||||
|
||||
* decorators for existing logger (`test.NewLocal` and `test.NewGlobal`) which basically just add the `test` hook
|
||||
* a test logger (`test.NewNullLogger`) that just records log messages (and does not output any):
|
||||
|
||||
```go
|
||||
import(
|
||||
"github.com/sirupsen/logrus"
|
||||
"github.com/sirupsen/logrus/hooks/test"
|
||||
"github.com/stretchr/testify/assert"
|
||||
"testing"
|
||||
)
|
||||
|
||||
func TestSomething(t*testing.T){
|
||||
logger, hook := test.NewNullLogger()
|
||||
logger.Error("Helloerror")
|
||||
|
||||
assert.Equal(t, 1, len(hook.Entries))
|
||||
assert.Equal(t, logrus.ErrorLevel, hook.LastEntry().Level)
|
||||
assert.Equal(t, "Helloerror", hook.LastEntry().Message)
|
||||
|
||||
hook.Reset()
|
||||
assert.Nil(t, hook.LastEntry())
|
||||
}
|
||||
```
|
||||
|
||||
#### Fatal handlers
|
||||
|
||||
Logrus can register one or more functions that will be called when any `fatal`
|
||||
level message is logged. The registered handlers will be executed before
|
||||
logrus performs a `os.Exit(1)`. This behavior may be helpful if callers need
|
||||
to gracefully shutdown. Unlike a `panic("Something went wrong...")` call which can be intercepted with a deferred `recover` a call to `os.Exit(1)` can not be intercepted.
|
||||
|
||||
```
|
||||
...
|
||||
handler := func() {
|
||||
// gracefully shutdown something...
|
||||
}
|
||||
logrus.RegisterExitHandler(handler)
|
||||
...
|
||||
```
|
||||
|
||||
#### Thread safety
|
||||
|
||||
By default, Logger is protected by a mutex for concurrent writes. The mutex is held when calling hooks and writing logs.
|
||||
If you are sure such locking is not needed, you can call logger.SetNoLock() to disable the locking.
|
||||
|
||||
Situation when locking is not needed includes:
|
||||
|
||||
* You have no hooks registered, or hooks calling is already thread-safe.
|
||||
|
||||
* Writing to logger.Out is already thread-safe, for example:
|
||||
|
||||
1) logger.Out is protected by locks.
|
||||
|
||||
2) logger.Out is a os.File handler opened with `O_APPEND` flag, and every write is smaller than 4k. (This allow multi-thread/multi-process writing)
|
||||
|
||||
(Refer to http://www.notthewizard.com/2014/06/17/are-files-appends-really-atomic/)
|
@ -0,0 +1,76 @@
|
||||
package logrus
|
||||
|
||||
// The following code was sourced and modified from the
|
||||
// https://github.com/tebeka/atexit package governed by the following license:
|
||||
//
|
||||
// Copyright (c) 2012 Miki Tebeka <miki.tebeka@gmail.com>.
|
||||
//
|
||||
// Permission is hereby granted, free of charge, to any person obtaining a copy of
|
||||
// this software and associated documentation files (the "Software"), to deal in
|
||||
// the Software without restriction, including without limitation the rights to
|
||||
// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
|
||||
// the Software, and to permit persons to whom the Software is furnished to do so,
|
||||
// subject to the following conditions:
|
||||
//
|
||||
// The above copyright notice and this permission notice shall be included in all
|
||||
// copies or substantial portions of the Software.
|
||||
//
|
||||
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
|
||||
// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
|
||||
// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
|
||||
// IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
||||
// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"os"
|
||||
)
|
||||
|
||||
var handlers = []func(){}
|
||||
|
||||
func runHandler(handler func()) {
|
||||
defer func() {
|
||||
if err := recover(); err != nil {
|
||||
fmt.Fprintln(os.Stderr, "Error: Logrus exit handler error:", err)
|
||||
}
|
||||
}()
|
||||
|
||||
handler()
|
||||
}
|
||||
|
||||
func runHandlers() {
|
||||
for _, handler := range handlers {
|
||||
runHandler(handler)
|
||||
}
|
||||
}
|
||||
|
||||
// Exit runs all the Logrus atexit handlers and then terminates the program using os.Exit(code)
|
||||
func Exit(code int) {
|
||||
runHandlers()
|
||||
os.Exit(code)
|
||||
}
|
||||
|
||||
// RegisterExitHandler appends a Logrus Exit handler to the list of handlers,
|
||||
// call logrus.Exit to invoke all handlers. The handlers will also be invoked when
|
||||
// any Fatal log entry is made.
|
||||
//
|
||||
// This method is useful when a caller wishes to use logrus to log a fatal
|
||||
// message but also needs to gracefully shutdown. An example usecase could be
|
||||
// closing database connections, or sending a alert that the application is
|
||||
// closing.
|
||||
func RegisterExitHandler(handler func()) {
|
||||
handlers = append(handlers, handler)
|
||||
}
|
||||
|
||||
// DeferExitHandler prepends a Logrus Exit handler to the list of handlers,
|
||||
// call logrus.Exit to invoke all handlers. The handlers will also be invoked when
|
||||
// any Fatal log entry is made.
|
||||
//
|
||||
// This method is useful when a caller wishes to use logrus to log a fatal
|
||||
// message but also needs to gracefully shutdown. An example usecase could be
|
||||
// closing database connections, or sending a alert that the application is
|
||||
// closing.
|
||||
func DeferExitHandler(handler func()) {
|
||||
handlers = append([]func(){handler}, handlers...)
|
||||
}
|
@ -0,0 +1,14 @@
|
||||
version: "{build}"
|
||||
platform: x64
|
||||
clone_folder: c:\gopath\src\github.com\sirupsen\logrus
|
||||
environment:
|
||||
GOPATH: c:\gopath
|
||||
branches:
|
||||
only:
|
||||
- master
|
||||
install:
|
||||
- set PATH=%GOPATH%\bin;c:\go\bin;%PATH%
|
||||
- go version
|
||||
build_script:
|
||||
- go get -t
|
||||
- go test
|
@ -0,0 +1,26 @@
|
||||
/*
|
||||
Package logrus is a structured logger for Go, completely API compatible with the standard library logger.
|
||||
|
||||
|
||||
The simplest way to use Logrus is simply the package-level exported logger:
|
||||
|
||||
package main
|
||||
|
||||
import (
|
||||
log "github.com/sirupsen/logrus"
|
||||
)
|
||||
|
||||
func main() {
|
||||
log.WithFields(log.Fields{
|
||||
"animal": "walrus",
|
||||
"number": 1,
|
||||
"size": 10,
|
||||
}).Info("A walrus appears")
|
||||
}
|
||||
|
||||
Output:
|
||||
time="2015-09-07T08:48:33Z" level=info msg="A walrus appears" animal=walrus number=1 size=10
|
||||
|
||||
For a full guide visit https://github.com/sirupsen/logrus
|
||||
*/
|
||||
package logrus
|
@ -0,0 +1,407 @@
|
||||
package logrus
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"context"
|
||||
"fmt"
|
||||
"os"
|
||||
"reflect"
|
||||
"runtime"
|
||||
"strings"
|
||||
"sync"
|
||||
"time"
|
||||
)
|
||||
|
||||
var (
|
||||
bufferPool *sync.Pool
|
||||
|
||||
// qualified package name, cached at first use
|
||||
logrusPackage string
|
||||
|
||||
// Positions in the call stack when tracing to report the calling method
|
||||
minimumCallerDepth int
|
||||
|
||||
// Used for caller information initialisation
|
||||
callerInitOnce sync.Once
|
||||
)
|
||||
|
||||
const (
|
||||
maximumCallerDepth int = 25
|
||||
knownLogrusFrames int = 4
|
||||
)
|
||||
|
||||
func init() {
|
||||
bufferPool = &sync.Pool{
|
||||
New: func() interface{} {
|
||||
return new(bytes.Buffer)
|
||||
},
|
||||
}
|
||||
|
||||
// start at the bottom of the stack before the package-name cache is primed
|
||||
minimumCallerDepth = 1
|
||||
}
|
||||
|
||||
// Defines the key when adding errors using WithError.
|
||||
var ErrorKey = "error"
|
||||
|
||||
// An entry is the final or intermediate Logrus logging entry. It contains all
|
||||
// the fields passed with WithField{,s}. It's finally logged when Trace, Debug,
|
||||
// Info, Warn, Error, Fatal or Panic is called on it. These objects can be
|
||||
// reused and passed around as much as you wish to avoid field duplication.
|
||||
type Entry struct {
|
||||
Logger *Logger
|
||||
|
||||
// Contains all the fields set by the user.
|
||||
Data Fields
|
||||
|
||||
// Time at which the log entry was created
|
||||
Time time.Time
|
||||
|
||||
// Level the log entry was logged at: Trace, Debug, Info, Warn, Error, Fatal or Panic
|
||||
// This field will be set on entry firing and the value will be equal to the one in Logger struct field.
|
||||
Level Level
|
||||
|
||||
// Calling method, with package name
|
||||
Caller *runtime.Frame
|
||||
|
||||
// Message passed to Trace, Debug, Info, Warn, Error, Fatal or Panic
|
||||
Message string
|
||||
|
||||
// When formatter is called in entry.log(), a Buffer may be set to entry
|
||||
Buffer *bytes.Buffer
|
||||
|
||||
// Contains the context set by the user. Useful for hook processing etc.
|
||||
Context context.Context
|
||||
|
||||
// err may contain a field formatting error
|
||||
err string
|
||||
}
|
||||
|
||||
func NewEntry(logger *Logger) *Entry {
|
||||
return &Entry{
|
||||
Logger: logger,
|
||||
// Default is three fields, plus one optional. Give a little extra room.
|
||||
Data: make(Fields, 6),
|
||||
}
|
||||
}
|
||||
|
||||
// Returns the string representation from the reader and ultimately the
|
||||
// formatter.
|
||||
func (entry *Entry) String() (string, error) {
|
||||
serialized, err := entry.Logger.Formatter.Format(entry)
|
||||
if err != nil {
|
||||
return "", err
|
||||
}
|
||||
str := string(serialized)
|
||||
return str, nil
|
||||
}
|
||||
|
||||
// Add an error as single field (using the key defined in ErrorKey) to the Entry.
|
||||
func (entry *Entry) WithError(err error) *Entry {
|
||||
return entry.WithField(ErrorKey, err)
|
||||
}
|
||||
|
||||
// Add a context to the Entry.
|
||||
func (entry *Entry) WithContext(ctx context.Context) *Entry {
|
||||
return &Entry{Logger: entry.Logger, Data: entry.Data, Time: entry.Time, err: entry.err, Context: ctx}
|
||||
}
|
||||
|
||||
// Add a single field to the Entry.
|
||||
func (entry *Entry) WithField(key string, value interface{}) *Entry {
|
||||
return entry.WithFields(Fields{key: value})
|
||||
}
|
||||
|
||||
// Add a map of fields to the Entry.
|
||||
func (entry *Entry) WithFields(fields Fields) *Entry {
|
||||
data := make(Fields, len(entry.Data)+len(fields))
|
||||
for k, v := range entry.Data {
|
||||
data[k] = v
|
||||
}
|
||||
fieldErr := entry.err
|
||||
for k, v := range fields {
|
||||
isErrField := false
|
||||
if t := reflect.TypeOf(v); t != nil {
|
||||
switch t.Kind() {
|
||||
case reflect.Func:
|
||||
isErrField = true
|
||||
case reflect.Ptr:
|
||||
isErrField = t.Elem().Kind() == reflect.Func
|
||||
}
|
||||
}
|
||||
if isErrField {
|
||||
tmp := fmt.Sprintf("can not add field %q", k)
|
||||
if fieldErr != "" {
|
||||
fieldErr = entry.err + ", " + tmp
|
||||
} else {
|
||||
fieldErr = tmp
|
||||
}
|
||||
} else {
|
||||
data[k] = v
|
||||
}
|
||||
}
|
||||
return &Entry{Logger: entry.Logger, Data: data, Time: entry.Time, err: fieldErr, Context: entry.Context}
|
||||
}
|
||||
|
||||
// Overrides the time of the Entry.
|
||||
func (entry *Entry) WithTime(t time.Time) *Entry {
|
||||
return &Entry{Logger: entry.Logger, Data: entry.Data, Time: t, err: entry.err, Context: entry.Context}
|
||||
}
|
||||
|
||||
// getPackageName reduces a fully qualified function name to the package name
|
||||
// There really ought to be to be a better way...
|
||||
func getPackageName(f string) string {
|
||||
for {
|
||||
lastPeriod := strings.LastIndex(f, ".")
|
||||
lastSlash := strings.LastIndex(f, "/")
|
||||
if lastPeriod > lastSlash {
|
||||
f = f[:lastPeriod]
|
||||
} else {
|
||||
break
|
||||
}
|
||||
}
|
||||
|
||||
return f
|
||||
}
|
||||
|
||||
// getCaller retrieves the name of the first non-logrus calling function
|
||||
func getCaller() *runtime.Frame {
|
||||
|
||||
// cache this package's fully-qualified name
|
||||
callerInitOnce.Do(func() {
|
||||
pcs := make([]uintptr, 2)
|
||||
_ = runtime.Callers(0, pcs)
|
||||
logrusPackage = getPackageName(runtime.FuncForPC(pcs[1]).Name())
|
||||
|
||||
// now that we have the cache, we can skip a minimum count of known-logrus functions
|
||||
// XXX this is dubious, the number of frames may vary
|
||||
minimumCallerDepth = knownLogrusFrames
|
||||
})
|
||||
|
||||
// Restrict the lookback frames to avoid runaway lookups
|
||||
pcs := make([]uintptr, maximumCallerDepth)
|
||||
depth := runtime.Callers(minimumCallerDepth, pcs)
|
||||
frames := runtime.CallersFrames(pcs[:depth])
|
||||
|
||||
for f, again := frames.Next(); again; f, again = frames.Next() {
|
||||
pkg := getPackageName(f.Function)
|
||||
|
||||
// If the caller isn't part of this package, we're done
|
||||
if pkg != logrusPackage {
|
||||
return &f
|
||||
}
|
||||
}
|
||||
|
||||
// if we got here, we failed to find the caller's context
|
||||
return nil
|
||||
}
|
||||
|
||||
func (entry Entry) HasCaller() (has bool) {
|
||||
return entry.Logger != nil &&
|
||||
entry.Logger.ReportCaller &&
|
||||
entry.Caller != nil
|
||||
}
|
||||
|
||||
// This function is not declared with a pointer value because otherwise
|
||||
// race conditions will occur when using multiple goroutines
|
||||
func (entry Entry) log(level Level, msg string) {
|
||||
var buffer *bytes.Buffer
|
||||
|
||||
// Default to now, but allow users to override if they want.
|
||||
//
|
||||
// We don't have to worry about polluting future calls to Entry#log()
|
||||
// with this assignment because this function is declared with a
|
||||
// non-pointer receiver.
|
||||
if entry.Time.IsZero() {
|
||||
entry.Time = time.Now()
|
||||
}
|
||||
|
||||
entry.Level = level
|
||||
entry.Message = msg
|
||||
if entry.Logger.ReportCaller {
|
||||
entry.Caller = getCaller()
|
||||
}
|
||||
|
||||
entry.fireHooks()
|
||||
|
||||
buffer = bufferPool.Get().(*bytes.Buffer)
|
||||
buffer.Reset()
|
||||
defer bufferPool.Put(buffer)
|
||||
entry.Buffer = buffer
|
||||
|
||||
entry.write()
|
||||
|
||||
entry.Buffer = nil
|
||||
|
||||
// To avoid Entry#log() returning a value that only would make sense for
|
||||
// panic() to use in Entry#Panic(), we avoid the allocation by checking
|
||||
// directly here.
|
||||
if level <= PanicLevel {
|
||||
panic(&entry)
|
||||
}
|
||||
}
|
||||
|
||||
func (entry *Entry) fireHooks() {
|
||||
entry.Logger.mu.Lock()
|
||||
defer entry.Logger.mu.Unlock()
|
||||
err := entry.Logger.Hooks.Fire(entry.Level, entry)
|
||||
if err != nil {
|
||||
fmt.Fprintf(os.Stderr, "Failed to fire hook: %v\n", err)
|
||||
}
|
||||
}
|
||||
|
||||
func (entry *Entry) write() {
|
||||
entry.Logger.mu.Lock()
|
||||
defer entry.Logger.mu.Unlock()
|
||||
serialized, err := entry.Logger.Formatter.Format(entry)
|
||||
if err != nil {
|
||||
fmt.Fprintf(os.Stderr, "Failed to obtain reader, %v\n", err)
|
||||
} else {
|
||||
_, err = entry.Logger.Out.Write(serialized)
|
||||
if err != nil {
|
||||
fmt.Fprintf(os.Stderr, "Failed to write to log, %v\n", err)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func (entry *Entry) Log(level Level, args ...interface{}) {
|
||||
if entry.Logger.IsLevelEnabled(level) {
|
||||
entry.log(level, fmt.Sprint(args...))
|
||||
}
|
||||
}
|
||||
|
||||
func (entry *Entry) Trace(args ...interface{}) {
|
||||
entry.Log(TraceLevel, args...)
|
||||
}
|
||||
|
||||
func (entry *Entry) Debug(args ...interface{}) {
|
||||
entry.Log(DebugLevel, args...)
|
||||
}
|
||||
|
||||
func (entry *Entry) Print(args ...interface{}) {
|
||||
entry.Info(args...)
|
||||
}
|
||||
|
||||
func (entry *Entry) Info(args ...interface{}) {
|
||||
entry.Log(InfoLevel, args...)
|
||||
}
|
||||
|
||||
func (entry *Entry) Warn(args ...interface{}) {
|
||||
entry.Log(WarnLevel, args...)
|
||||
}
|
||||
|
||||
func (entry *Entry) Warning(args ...interface{}) {
|
||||
entry.Warn(args...)
|
||||
}
|
||||
|
||||
func (entry *Entry) Error(args ...interface{}) {
|
||||
entry.Log(ErrorLevel, args...)
|
||||
}
|
||||
|
||||
func (entry *Entry) Fatal(args ...interface{}) {
|
||||
entry.Log(FatalLevel, args...)
|
||||
entry.Logger.Exit(1)
|
||||
}
|
||||
|
||||
func (entry *Entry) Panic(args ...interface{}) {
|
||||
entry.Log(PanicLevel, args...)
|
||||
panic(fmt.Sprint(args...))
|
||||
}
|
||||
|
||||
// Entry Printf family functions
|
||||
|
||||
func (entry *Entry) Logf(level Level, format string, args ...interface{}) {
|
||||
if entry.Logger.IsLevelEnabled(level) {
|
||||
entry.Log(level, fmt.Sprintf(format, args...))
|
||||
}
|
||||
}
|
||||
|
||||
func (entry *Entry) Tracef(format string, args ...interface{}) {
|
||||
entry.Logf(TraceLevel, format, args...)
|
||||
}
|
||||
|
||||
func (entry *Entry) Debugf(format string, args ...interface{}) {
|
||||
entry.Logf(DebugLevel, format, args...)
|
||||
}
|
||||
|
||||
func (entry *Entry) Infof(format string, args ...interface{}) {
|
||||
entry.Logf(InfoLevel, format, args...)
|
||||
}
|
||||
|
||||
func (entry *Entry) Printf(format string, args ...interface{}) {
|
||||
entry.Infof(format, args...)
|
||||
}
|
||||
|
||||
func (entry *Entry) Warnf(format string, args ...interface{}) {
|
||||
entry.Logf(WarnLevel, format, args...)
|
||||
}
|
||||
|
||||
func (entry *Entry) Warningf(format string, args ...interface{}) {
|
||||
entry.Warnf(format, args...)
|
||||
}
|
||||
|
||||
func (entry *Entry) Errorf(format string, args ...interface{}) {
|
||||
entry.Logf(ErrorLevel, format, args...)
|
||||
}
|
||||
|
||||
func (entry *Entry) Fatalf(format string, args ...interface{}) {
|
||||
entry.Logf(FatalLevel, format, args...)
|
||||
entry.Logger.Exit(1)
|
||||
}
|
||||
|
||||
func (entry *Entry) Panicf(format string, args ...interface{}) {
|
||||
entry.Logf(PanicLevel, format, args...)
|
||||
}
|
||||
|
||||
// Entry Println family functions
|
||||
|
||||
func (entry *Entry) Logln(level Level, args ...interface{}) {
|
||||
if entry.Logger.IsLevelEnabled(level) {
|
||||
entry.Log(level, entry.sprintlnn(args...))
|
||||
}
|
||||
}
|
||||
|
||||
func (entry *Entry) Traceln(args ...interface{}) {
|
||||
entry.Logln(TraceLevel, args...)
|
||||
}
|
||||
|
||||
func (entry *Entry) Debugln(args ...interface{}) {
|
||||
entry.Logln(DebugLevel, args...)
|
||||
}
|
||||
|
||||
func (entry *Entry) Infoln(args ...interface{}) {
|
||||
entry.Logln(InfoLevel, args...)
|
||||
}
|
||||
|
||||
func (entry *Entry) Println(args ...interface{}) {
|
||||
entry.Infoln(args...)
|
||||
}
|
||||
|
||||
func (entry *Entry) Warnln(args ...interface{}) {
|
||||
entry.Logln(WarnLevel, args...)
|
||||
}
|
||||
|
||||
func (entry *Entry) Warningln(args ...interface{}) {
|
||||
entry.Warnln(args...)
|
||||
}
|
||||
|
||||
func (entry *Entry) Errorln(args ...interface{}) {
|
||||
entry.Logln(ErrorLevel, args...)
|
||||
}
|
||||
|
||||
func (entry *Entry) Fatalln(args ...interface{}) {
|
||||
entry.Logln(FatalLevel, args...)
|
||||
entry.Logger.Exit(1)
|
||||
}
|
||||
|
||||
func (entry *Entry) Panicln(args ...interface{}) {
|
||||
entry.Logln(PanicLevel, args...)
|
||||
}
|
||||
|
||||
// Sprintlnn => Sprint no newline. This is to get the behavior of how
|
||||
// fmt.Sprintln where spaces are always added between operands, regardless of
|
||||
// their type. Instead of vendoring the Sprintln implementation to spare a
|
||||
// string allocation, we do the simplest thing.
|
||||
func (entry *Entry) sprintlnn(args ...interface{}) string {
|
||||
msg := fmt.Sprintln(args...)
|
||||
return msg[:len(msg)-1]
|
||||
}
|
@ -0,0 +1,225 @@
|
||||
package logrus
|
||||
|
||||
import (
|
||||
"context"
|
||||
"io"
|
||||
"time"
|
||||
)
|
||||
|
||||
var (
|
||||
// std is the name of the standard logger in stdlib `log`
|
||||
std = New()
|
||||
)
|
||||
|
||||
func StandardLogger() *Logger {
|
||||
return std
|
||||
}
|
||||
|
||||
// SetOutput sets the standard logger output.
|
||||
func SetOutput(out io.Writer) {
|
||||
std.SetOutput(out)
|
||||
}
|
||||
|
||||
// SetFormatter sets the standard logger formatter.
|
||||
func SetFormatter(formatter Formatter) {
|
||||
std.SetFormatter(formatter)
|
||||
}
|
||||
|
||||
// SetReportCaller sets whether the standard logger will include the calling
|
||||
// method as a field.
|
||||
func SetReportCaller(include bool) {
|
||||
std.SetReportCaller(include)
|
||||
}
|
||||
|
||||
// SetLevel sets the standard logger level.
|
||||
func SetLevel(level Level) {
|
||||
std.SetLevel(level)
|
||||
}
|
||||
|
||||
// GetLevel returns the standard logger level.
|
||||
func GetLevel() Level {
|
||||
return std.GetLevel()
|
||||
}
|
||||
|
||||
// IsLevelEnabled checks if the log level of the standard logger is greater than the level param
|
||||
func IsLevelEnabled(level Level) bool {
|
||||
return std.IsLevelEnabled(level)
|
||||
}
|
||||
|
||||
// AddHook adds a hook to the standard logger hooks.
|
||||
func AddHook(hook Hook) {
|
||||
std.AddHook(hook)
|
||||
}
|
||||
|
||||
// WithError creates an entry from the standard logger and adds an error to it, using the value defined in ErrorKey as key.
|
||||
func WithError(err error) *Entry {
|
||||
return std.WithField(ErrorKey, err)
|
||||
}
|
||||
|
||||
// WithContext creates an entry from the standard logger and adds a context to it.
|
||||
func WithContext(ctx context.Context) *Entry {
|
||||
return std.WithContext(ctx)
|
||||
}
|
||||
|
||||
// WithField creates an entry from the standard logger and adds a field to
|
||||
// it. If you want multiple fields, use `WithFields`.
|
||||
//
|
||||
// Note that it doesn't log until you call Debug, Print, Info, Warn, Fatal
|
||||
// or Panic on the Entry it returns.
|
||||
func WithField(key string, value interface{}) *Entry {
|
||||
return std.WithField(key, value)
|
||||
}
|
||||
|
||||
// WithFields creates an entry from the standard logger and adds multiple
|
||||
// fields to it. This is simply a helper for `WithField`, invoking it
|
||||
// once for each field.
|
||||
//
|
||||
// Note that it doesn't log until you call Debug, Print, Info, Warn, Fatal
|
||||
// or Panic on the Entry it returns.
|
||||
func WithFields(fields Fields) *Entry {
|
||||
return std.WithFields(fields)
|
||||
}
|
||||
|
||||
// WithTime creats an entry from the standard logger and overrides the time of
|
||||
// logs generated with it.
|
||||
//
|
||||
// Note that it doesn't log until you call Debug, Print, Info, Warn, Fatal
|
||||
// or Panic on the Entry it returns.
|
||||
func WithTime(t time.Time) *Entry {
|
||||
return std.WithTime(t)
|
||||
}
|
||||
|
||||
// Trace logs a message at level Trace on the standard logger.
|
||||
func Trace(args ...interface{}) {
|
||||
std.Trace(args...)
|
||||
}
|
||||
|
||||
// Debug logs a message at level Debug on the standard logger.
|
||||
func Debug(args ...interface{}) {
|
||||
std.Debug(args...)
|
||||
}
|
||||
|
||||
// Print logs a message at level Info on the standard logger.
|
||||
func Print(args ...interface{}) {
|
||||
std.Print(args...)
|
||||
}
|
||||
|
||||
// Info logs a message at level Info on the standard logger.
|
||||
func Info(args ...interface{}) {
|
||||
std.Info(args...)
|
||||
}
|
||||
|
||||
// Warn logs a message at level Warn on the standard logger.
|
||||
func Warn(args ...interface{}) {
|
||||
std.Warn(args...)
|
||||
}
|
||||
|
||||
// Warning logs a message at level Warn on the standard logger.
|
||||
func Warning(args ...interface{}) {
|
||||
std.Warning(args...)
|
||||
}
|
||||
|
||||
// Error logs a message at level Error on the standard logger.
|
||||
func Error(args ...interface{}) {
|
||||
std.Error(args...)
|
||||
}
|
||||
|
||||
// Panic logs a message at level Panic on the standard logger.
|
||||
func Panic(args ...interface{}) {
|
||||
std.Panic(args...)
|
||||
}
|
||||
|
||||
// Fatal logs a message at level Fatal on the standard logger then the process will exit with status set to 1.
|
||||
func Fatal(args ...interface{}) {
|
||||
std.Fatal(args...)
|
||||
}
|
||||
|
||||
// Tracef logs a message at level Trace on the standard logger.
|
||||
func Tracef(format string, args ...interface{}) {
|
||||
std.Tracef(format, args...)
|
||||
}
|
||||
|
||||
// Debugf logs a message at level Debug on the standard logger.
|
||||
func Debugf(format string, args ...interface{}) {
|
||||
std.Debugf(format, args...)
|
||||
}
|
||||
|
||||
// Printf logs a message at level Info on the standard logger.
|
||||
func Printf(format string, args ...interface{}) {
|
||||
std.Printf(format, args...)
|
||||
}
|
||||
|
||||
// Infof logs a message at level Info on the standard logger.
|
||||
func Infof(format string, args ...interface{}) {
|
||||
std.Infof(format, args...)
|
||||
}
|
||||
|
||||
// Warnf logs a message at level Warn on the standard logger.
|
||||
func Warnf(format string, args ...interface{}) {
|
||||
std.Warnf(format, args...)
|
||||
}
|
||||
|
||||
// Warningf logs a message at level Warn on the standard logger.
|
||||
func Warningf(format string, args ...interface{}) {
|
||||
std.Warningf(format, args...)
|
||||
}
|
||||
|
||||
// Errorf logs a message at level Error on the standard logger.
|
||||
func Errorf(format string, args ...interface{}) {
|
||||
std.Errorf(format, args...)
|
||||
}
|
||||
|
||||
// Panicf logs a message at level Panic on the standard logger.
|
||||
func Panicf(format string, args ...interface{}) {
|
||||
std.Panicf(format, args...)
|
||||
}
|
||||
|
||||
// Fatalf logs a message at level Fatal on the standard logger then the process will exit with status set to 1.
|
||||
func Fatalf(format string, args ...interface{}) {
|
||||
std.Fatalf(format, args...)
|
||||
}
|
||||
|
||||
// Traceln logs a message at level Trace on the standard logger.
|
||||
func Traceln(args ...interface{}) {
|
||||
std.Traceln(args...)
|
||||
}
|
||||
|
||||
// Debugln logs a message at level Debug on the standard logger.
|
||||
func Debugln(args ...interface{}) {
|
||||
std.Debugln(args...)
|
||||
}
|
||||
|
||||
// Println logs a message at level Info on the standard logger.
|
||||
func Println(args ...interface{}) {
|
||||
std.Println(args...)
|
||||
}
|
||||
|
||||
// Infoln logs a message at level Info on the standard logger.
|
||||
func Infoln(args ...interface{}) {
|
||||
std.Infoln(args...)
|
||||
}
|
||||
|
||||
// Warnln logs a message at level Warn on the standard logger.
|
||||
func Warnln(args ...interface{}) {
|
||||
std.Warnln(args...)
|
||||
}
|
||||
|
||||
// Warningln logs a message at level Warn on the standard logger.
|
||||
func Warningln(args ...interface{}) {
|
||||
std.Warningln(args...)
|
||||
}
|
||||
|
||||
// Errorln logs a message at level Error on the standard logger.
|
||||
func Errorln(args ...interface{}) {
|
||||
std.Errorln(args...)
|
||||
}
|
||||
|
||||
// Panicln logs a message at level Panic on the standard logger.
|
||||
func Panicln(args ...interface{}) {
|
||||
std.Panicln(args...)
|
||||
}
|
||||
|
||||
// Fatalln logs a message at level Fatal on the standard logger then the process will exit with status set to 1.
|
||||
func Fatalln(args ...interface{}) {
|
||||
std.Fatalln(args...)
|
||||
}
|
@ -0,0 +1,78 @@
|
||||
package logrus
|
||||
|
||||
import "time"
|
||||
|
||||
// Default key names for the default fields
|
||||
const (
|
||||
defaultTimestampFormat = time.RFC3339
|
||||
FieldKeyMsg = "msg"
|
||||
FieldKeyLevel = "level"
|
||||
FieldKeyTime = "time"
|
||||
FieldKeyLogrusError = "logrus_error"
|
||||
FieldKeyFunc = "func"
|
||||
FieldKeyFile = "file"
|
||||
)
|
||||
|
||||
// The Formatter interface is used to implement a custom Formatter. It takes an
|
||||
// `Entry`. It exposes all the fields, including the default ones:
|
||||
//
|
||||
// * `entry.Data["msg"]`. The message passed from Info, Warn, Error ..
|
||||
// * `entry.Data["time"]`. The timestamp.
|
||||
// * `entry.Data["level"]. The level the entry was logged at.
|
||||
//
|
||||
// Any additional fields added with `WithField` or `WithFields` are also in
|
||||
// `entry.Data`. Format is expected to return an array of bytes which are then
|
||||
// logged to `logger.Out`.
|
||||
type Formatter interface {
|
||||
Format(*Entry) ([]byte, error)
|
||||
}
|
||||
|
||||
// This is to not silently overwrite `time`, `msg`, `func` and `level` fields when
|
||||
// dumping it. If this code wasn't there doing:
|
||||
//
|
||||
// logrus.WithField("level", 1).Info("hello")
|
||||
//
|
||||
// Would just silently drop the user provided level. Instead with this code
|
||||
// it'll logged as:
|
||||
//
|
||||
// {"level": "info", "fields.level": 1, "msg": "hello", "time": "..."}
|
||||
//
|
||||
// It's not exported because it's still using Data in an opinionated way. It's to
|
||||
// avoid code duplication between the two default formatters.
|
||||
func prefixFieldClashes(data Fields, fieldMap FieldMap, reportCaller bool) {
|
||||
timeKey := fieldMap.resolve(FieldKeyTime)
|
||||
if t, ok := data[timeKey]; ok {
|
||||
data["fields."+timeKey] = t
|
||||
delete(data, timeKey)
|
||||
}
|
||||
|
||||
msgKey := fieldMap.resolve(FieldKeyMsg)
|
||||
if m, ok := data[msgKey]; ok {
|
||||
data["fields."+msgKey] = m
|
||||
delete(data, msgKey)
|
||||
}
|
||||
|
||||
levelKey := fieldMap.resolve(FieldKeyLevel)
|
||||
if l, ok := data[levelKey]; ok {
|
||||
data["fields."+levelKey] = l
|
||||
delete(data, levelKey)
|
||||
}
|
||||
|
||||
logrusErrKey := fieldMap.resolve(FieldKeyLogrusError)
|
||||
if l, ok := data[logrusErrKey]; ok {
|
||||
data["fields."+logrusErrKey] = l
|
||||
delete(data, logrusErrKey)
|
||||
}
|
||||
|
||||
// If reportCaller is not set, 'func' will not conflict.
|
||||
if reportCaller {
|
||||
funcKey := fieldMap.resolve(FieldKeyFunc)
|
||||
if l, ok := data[funcKey]; ok {
|
||||
data["fields."+funcKey] = l
|
||||
}
|
||||
fileKey := fieldMap.resolve(FieldKeyFile)
|
||||
if l, ok := data[fileKey]; ok {
|
||||
data["fields."+fileKey] = l
|
||||
}
|
||||
}
|
||||
}
|
@ -0,0 +1,10 @@
|
||||
module github.com/sirupsen/logrus
|
||||
|
||||
require (
|
||||
github.com/davecgh/go-spew v1.1.1 // indirect
|
||||
github.com/konsorten/go-windows-terminal-sequences v1.0.1
|
||||
github.com/pmezard/go-difflib v1.0.0 // indirect
|
||||
github.com/stretchr/objx v0.1.1 // indirect
|
||||
github.com/stretchr/testify v1.2.2
|
||||
golang.org/x/sys v0.0.0-20190422165155-953cdadca894
|
||||
)
|
@ -0,0 +1,16 @@
|
||||
github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
|
||||
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
|
||||
github.com/konsorten/go-windows-terminal-sequences v0.0.0-20180402223658-b729f2633dfe h1:CHRGQ8V7OlCYtwaKPJi3iA7J+YdNKdo8j7nG5IgDhjs=
|
||||
github.com/konsorten/go-windows-terminal-sequences v0.0.0-20180402223658-b729f2633dfe/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
|
||||
github.com/konsorten/go-windows-terminal-sequences v1.0.1 h1:mweAR1A6xJ3oS2pRaGiHgQ4OO8tzTaLawm8vnODuwDk=
|
||||
github.com/konsorten/go-windows-terminal-sequences v1.0.1/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
|
||||
github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
|
||||
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
|
||||
github.com/stretchr/objx v0.1.1 h1:2vfRuCMp5sSVIDSqO8oNnWJq7mPa6KVP3iPIwFBuy8A=
|
||||
github.com/stretchr/objx v0.1.1/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
|
||||
github.com/stretchr/testify v1.2.2 h1:bSDNvY7ZPG5RlJ8otE/7V6gMiyenm9RtJ7IUVIAoJ1w=
|
||||
github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
|
||||
golang.org/x/sys v0.0.0-20180905080454-ebe1bf3edb33 h1:I6FyU15t786LL7oL/hn43zqTuEGr4PN7F4XJ1p4E3Y8=
|
||||
golang.org/x/sys v0.0.0-20180905080454-ebe1bf3edb33/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
|
||||
golang.org/x/sys v0.0.0-20190422165155-953cdadca894 h1:Cz4ceDQGXuKRnVBDTS23GTn/pU5OE2C0WrNTOYK1Uuc=
|
||||
golang.org/x/sys v0.0.0-20190422165155-953cdadca894/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
|
@ -0,0 +1,34 @@
|
||||
package logrus
|
||||
|
||||
// A hook to be fired when logging on the logging levels returned from
|
||||
// `Levels()` on your implementation of the interface. Note that this is not
|
||||
// fired in a goroutine or a channel with workers, you should handle such
|
||||
// functionality yourself if your call is non-blocking and you don't wish for
|
||||
// the logging calls for levels returned from `Levels()` to block.
|
||||
type Hook interface {
|
||||
Levels() []Level
|
||||
Fire(*Entry) error
|
||||
}
|
||||
|
||||
// Internal type for storing the hooks on a logger instance.
|
||||
type LevelHooks map[Level][]Hook
|
||||
|
||||
// Add a hook to an instance of logger. This is called with
|
||||
// `log.Hooks.Add(new(MyHook))` where `MyHook` implements the `Hook` interface.
|
||||
func (hooks LevelHooks) Add(hook Hook) {
|
||||
for _, level := range hook.Levels() {
|
||||
hooks[level] = append(hooks[level], hook)
|
||||
}
|
||||
}
|
||||
|
||||
// Fire all the hooks for the passed level. Used by `entry.log` to fire
|
||||
// appropriate hooks for a log entry.
|
||||
func (hooks LevelHooks) Fire(level Level, entry *Entry) error {
|
||||
for _, hook := range hooks[level] {
|
||||
if err := hook.Fire(entry); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
@ -0,0 +1,121 @@
|
||||
package logrus
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"encoding/json"
|
||||
"fmt"
|
||||
"runtime"
|
||||
)
|
||||
|
||||
type fieldKey string
|
||||
|
||||
// FieldMap allows customization of the key names for default fields.
|
||||
type FieldMap map[fieldKey]string
|
||||
|
||||
func (f FieldMap) resolve(key fieldKey) string {
|
||||
if k, ok := f[key]; ok {
|
||||
return k
|
||||
}
|
||||
|
||||
return string(key)
|
||||
}
|
||||
|
||||
// JSONFormatter formats logs into parsable json
|
||||
type JSONFormatter struct {
|
||||
// TimestampFormat sets the format used for marshaling timestamps.
|
||||
TimestampFormat string
|
||||
|
||||
// DisableTimestamp allows disabling automatic timestamps in output
|
||||
DisableTimestamp bool
|
||||
|
||||
// DataKey allows users to put all the log entry parameters into a nested dictionary at a given key.
|
||||
DataKey string
|
||||
|
||||
// FieldMap allows users to customize the names of keys for default fields.
|
||||
// As an example:
|
||||
// formatter := &JSONFormatter{
|
||||
// FieldMap: FieldMap{
|
||||
// FieldKeyTime: "@timestamp",
|
||||
// FieldKeyLevel: "@level",
|
||||
// FieldKeyMsg: "@message",
|
||||
// FieldKeyFunc: "@caller",
|
||||
// },
|
||||
// }
|
||||
FieldMap FieldMap
|
||||
|
||||
// CallerPrettyfier can be set by the user to modify the content
|
||||
// of the function and file keys in the json data when ReportCaller is
|
||||
// activated. If any of the returned value is the empty string the
|
||||
// corresponding key will be removed from json fields.
|
||||
CallerPrettyfier func(*runtime.Frame) (function string, file string)
|
||||
|
||||
// PrettyPrint will indent all json logs
|
||||
PrettyPrint bool
|
||||
}
|
||||
|
||||
// Format renders a single log entry
|
||||
func (f *JSONFormatter) Format(entry *Entry) ([]byte, error) {
|
||||
data := make(Fields, len(entry.Data)+4)
|
||||
for k, v := range entry.Data {
|
||||
switch v := v.(type) {
|
||||
case error:
|
||||
// Otherwise errors are ignored by `encoding/json`
|
||||
// https://github.com/sirupsen/logrus/issues/137
|
||||
data[k] = v.Error()
|
||||
default:
|
||||
data[k] = v
|
||||
}
|
||||
}
|
||||
|
||||
if f.DataKey != "" {
|
||||
newData := make(Fields, 4)
|
||||
newData[f.DataKey] = data
|
||||
data = newData
|
||||
}
|
||||
|
||||
prefixFieldClashes(data, f.FieldMap, entry.HasCaller())
|
||||
|
||||
timestampFormat := f.TimestampFormat
|
||||
if timestampFormat == "" {
|
||||
timestampFormat = defaultTimestampFormat
|
||||
}
|
||||
|
||||
if entry.err != "" {
|
||||
data[f.FieldMap.resolve(FieldKeyLogrusError)] = entry.err
|
||||
}
|
||||
if !f.DisableTimestamp {
|
||||
data[f.FieldMap.resolve(FieldKeyTime)] = entry.Time.Format(timestampFormat)
|
||||
}
|
||||
data[f.FieldMap.resolve(FieldKeyMsg)] = entry.Message
|
||||
data[f.FieldMap.resolve(FieldKeyLevel)] = entry.Level.String()
|
||||
if entry.HasCaller() {
|
||||
funcVal := entry.Caller.Function
|
||||
fileVal := fmt.Sprintf("%s:%d", entry.Caller.File, entry.Caller.Line)
|
||||
if f.CallerPrettyfier != nil {
|
||||
funcVal, fileVal = f.CallerPrettyfier(entry.Caller)
|
||||
}
|
||||
if funcVal != "" {
|
||||
data[f.FieldMap.resolve(FieldKeyFunc)] = funcVal
|
||||
}
|
||||
if fileVal != "" {
|
||||
data[f.FieldMap.resolve(FieldKeyFile)] = fileVal
|
||||
}
|
||||
}
|
||||
|
||||
var b *bytes.Buffer
|
||||
if entry.Buffer != nil {
|
||||
b = entry.Buffer
|
||||
} else {
|
||||
b = &bytes.Buffer{}
|
||||
}
|
||||
|
||||
encoder := json.NewEncoder(b)
|
||||
if f.PrettyPrint {
|
||||
encoder.SetIndent("", " ")
|
||||
}
|
||||
if err := encoder.Encode(data); err != nil {
|
||||
return nil, fmt.Errorf("failed to marshal fields to JSON, %v", err)
|
||||
}
|
||||
|
||||
return b.Bytes(), nil
|
||||
}
|
@ -0,0 +1,351 @@
|
||||
package logrus
|
||||
|
||||
import (
|
||||
"context"
|
||||
"io"
|
||||
"os"
|
||||
"sync"
|
||||
"sync/atomic"
|
||||
"time"
|
||||
)
|
||||
|
||||
type Logger struct {
|
||||
// The logs are `io.Copy`'d to this in a mutex. It's common to set this to a
|
||||
// file, or leave it default which is `os.Stderr`. You can also set this to
|
||||
// something more adventurous, such as logging to Kafka.
|
||||
Out io.Writer
|
||||
// Hooks for the logger instance. These allow firing events based on logging
|
||||
// levels and log entries. For example, to send errors to an error tracking
|
||||
// service, log to StatsD or dump the core on fatal errors.
|
||||
Hooks LevelHooks
|
||||
// All log entries pass through the formatter before logged to Out. The
|
||||
// included formatters are `TextFormatter` and `JSONFormatter` for which
|
||||
// TextFormatter is the default. In development (when a TTY is attached) it
|
||||
// logs with colors, but to a file it wouldn't. You can easily implement your
|
||||
// own that implements the `Formatter` interface, see the `README` or included
|
||||
// formatters for examples.
|
||||
Formatter Formatter
|
||||
|
||||
// Flag for whether to log caller info (off by default)
|
||||
ReportCaller bool
|
||||
|
||||
// The logging level the logger should log at. This is typically (and defaults
|
||||
// to) `logrus.Info`, which allows Info(), Warn(), Error() and Fatal() to be
|
||||
// logged.
|
||||
Level Level
|
||||
// Used to sync writing to the log. Locking is enabled by Default
|
||||
mu MutexWrap
|
||||
// Reusable empty entry
|
||||
entryPool sync.Pool
|
||||
// Function to exit the application, defaults to `os.Exit()`
|
||||
ExitFunc exitFunc
|
||||
}
|
||||
|
||||
type exitFunc func(int)
|
||||
|
||||
type MutexWrap struct {
|
||||
lock sync.Mutex
|
||||
disabled bool
|
||||
}
|
||||
|
||||
func (mw *MutexWrap) Lock() {
|
||||
if !mw.disabled {
|
||||
mw.lock.Lock()
|
||||
}
|
||||
}
|
||||
|
||||
func (mw *MutexWrap) Unlock() {
|
||||
if !mw.disabled {
|
||||
mw.lock.Unlock()
|
||||
}
|
||||
}
|
||||
|
||||
func (mw *MutexWrap) Disable() {
|
||||
mw.disabled = true
|
||||
}
|
||||
|
||||
// Creates a new logger. Configuration should be set by changing `Formatter`,
|
||||
// `Out` and `Hooks` directly on the default logger instance. You can also just
|
||||
// instantiate your own:
|
||||
//
|
||||
// var log = &Logger{
|
||||
// Out: os.Stderr,
|
||||
// Formatter: new(JSONFormatter),
|
||||
// Hooks: make(LevelHooks),
|
||||
// Level: logrus.DebugLevel,
|
||||
// }
|
||||
//
|
||||
// It's recommended to make this a global instance called `log`.
|
||||
func New() *Logger {
|
||||
return &Logger{
|
||||
Out: os.Stderr,
|
||||
Formatter: new(TextFormatter),
|
||||
Hooks: make(LevelHooks),
|
||||
Level: InfoLevel,
|
||||
ExitFunc: os.Exit,
|
||||
ReportCaller: false,
|
||||
}
|
||||
}
|
||||
|
||||
func (logger *Logger) newEntry() *Entry {
|
||||
entry, ok := logger.entryPool.Get().(*Entry)
|
||||
if ok {
|
||||
return entry
|
||||
}
|
||||
return NewEntry(logger)
|
||||
}
|
||||
|
||||
func (logger *Logger) releaseEntry(entry *Entry) {
|
||||
entry.Data = map[string]interface{}{}
|
||||
logger.entryPool.Put(entry)
|
||||
}
|
||||
|
||||
// Adds a field to the log entry, note that it doesn't log until you call
|
||||
// Debug, Print, Info, Warn, Error, Fatal or Panic. It only creates a log entry.
|
||||
// If you want multiple fields, use `WithFields`.
|
||||
func (logger *Logger) WithField(key string, value interface{}) *Entry {
|
||||
entry := logger.newEntry()
|
||||
defer logger.releaseEntry(entry)
|
||||
return entry.WithField(key, value)
|
||||
}
|
||||
|
||||
// Adds a struct of fields to the log entry. All it does is call `WithField` for
|
||||
// each `Field`.
|
||||
func (logger *Logger) WithFields(fields Fields) *Entry {
|
||||
entry := logger.newEntry()
|
||||
defer logger.releaseEntry(entry)
|
||||
return entry.WithFields(fields)
|
||||
}
|
||||
|
||||
// Add an error as single field to the log entry. All it does is call
|
||||
// `WithError` for the given `error`.
|
||||
func (logger *Logger) WithError(err error) *Entry {
|
||||
entry := logger.newEntry()
|
||||
defer logger.releaseEntry(entry)
|
||||
return entry.WithError(err)
|
||||
}
|
||||
|
||||
// Add a context to the log entry.
|
||||
func (logger *Logger) WithContext(ctx context.Context) *Entry {
|
||||
entry := logger.newEntry()
|
||||
defer logger.releaseEntry(entry)
|
||||
return entry.WithContext(ctx)
|
||||
}
|
||||
|
||||
// Overrides the time of the log entry.
|
||||
func (logger *Logger) WithTime(t time.Time) *Entry {
|
||||
entry := logger.newEntry()
|
||||
defer logger.releaseEntry(entry)
|
||||
return entry.WithTime(t)
|
||||
}
|
||||
|
||||
func (logger *Logger) Logf(level Level, format string, args ...interface{}) {
|
||||
if logger.IsLevelEnabled(level) {
|
||||
entry := logger.newEntry()
|
||||
entry.Logf(level, format, args...)
|
||||
logger.releaseEntry(entry)
|
||||
}
|
||||
}
|
||||
|
||||
func (logger *Logger) Tracef(format string, args ...interface{}) {
|
||||
logger.Logf(TraceLevel, format, args...)
|
||||
}
|
||||
|
||||
func (logger *Logger) Debugf(format string, args ...interface{}) {
|
||||
logger.Logf(DebugLevel, format, args...)
|
||||
}
|
||||
|
||||
func (logger *Logger) Infof(format string, args ...interface{}) {
|
||||
logger.Logf(InfoLevel, format, args...)
|
||||
}
|
||||
|
||||
func (logger *Logger) Printf(format string, args ...interface{}) {
|
||||
entry := logger.newEntry()
|
||||
entry.Printf(format, args...)
|
||||
logger.releaseEntry(entry)
|
||||
}
|
||||
|
||||
func (logger *Logger) Warnf(format string, args ...interface{}) {
|
||||
logger.Logf(WarnLevel, format, args...)
|
||||
}
|
||||
|
||||
func (logger *Logger) Warningf(format string, args ...interface{}) {
|
||||
logger.Warnf(format, args...)
|
||||
}
|
||||
|
||||
func (logger *Logger) Errorf(format string, args ...interface{}) {
|
||||
logger.Logf(ErrorLevel, format, args...)
|
||||
}
|
||||
|
||||
func (logger *Logger) Fatalf(format string, args ...interface{}) {
|
||||
logger.Logf(FatalLevel, format, args...)
|
||||
logger.Exit(1)
|
||||
}
|
||||
|
||||
func (logger *Logger) Panicf(format string, args ...interface{}) {
|
||||
logger.Logf(PanicLevel, format, args...)
|
||||
}
|
||||
|
||||
func (logger *Logger) Log(level Level, args ...interface{}) {
|
||||
if logger.IsLevelEnabled(level) {
|
||||
entry := logger.newEntry()
|
||||
entry.Log(level, args...)
|
||||
logger.releaseEntry(entry)
|
||||
}
|
||||
}
|
||||
|
||||
func (logger *Logger) Trace(args ...interface{}) {
|
||||
logger.Log(TraceLevel, args...)
|
||||
}
|
||||
|
||||
func (logger *Logger) Debug(args ...interface{}) {
|
||||
logger.Log(DebugLevel, args...)
|
||||
}
|
||||
|
||||
func (logger *Logger) Info(args ...interface{}) {
|
||||
logger.Log(InfoLevel, args...)
|
||||
}
|
||||
|
||||
func (logger *Logger) Print(args ...interface{}) {
|
||||
entry := logger.newEntry()
|
||||
entry.Print(args...)
|
||||
logger.releaseEntry(entry)
|
||||
}
|
||||
|
||||
func (logger *Logger) Warn(args ...interface{}) {
|
||||
logger.Log(WarnLevel, args...)
|
||||
}
|
||||
|
||||
func (logger *Logger) Warning(args ...interface{}) {
|
||||
logger.Warn(args...)
|
||||
}
|
||||
|
||||
func (logger *Logger) Error(args ...interface{}) {
|
||||
logger.Log(ErrorLevel, args...)
|
||||
}
|
||||
|
||||
func (logger *Logger) Fatal(args ...interface{}) {
|
||||
logger.Log(FatalLevel, args...)
|
||||
logger.Exit(1)
|
||||
}
|
||||
|
||||
func (logger *Logger) Panic(args ...interface{}) {
|
||||
logger.Log(PanicLevel, args...)
|
||||
}
|
||||
|
||||
func (logger *Logger) Logln(level Level, args ...interface{}) {
|
||||
if logger.IsLevelEnabled(level) {
|
||||
entry := logger.newEntry()
|
||||
entry.Logln(level, args...)
|
||||
logger.releaseEntry(entry)
|
||||
}
|
||||
}
|
||||
|
||||
func (logger *Logger) Traceln(args ...interface{}) {
|
||||
logger.Logln(TraceLevel, args...)
|
||||
}
|
||||
|
||||
func (logger *Logger) Debugln(args ...interface{}) {
|
||||
logger.Logln(DebugLevel, args...)
|
||||
}
|
||||
|
||||
func (logger *Logger) Infoln(args ...interface{}) {
|
||||
logger.Logln(InfoLevel, args...)
|
||||
}
|
||||
|
||||
func (logger *Logger) Println(args ...interface{}) {
|
||||
entry := logger.newEntry()
|
||||
entry.Println(args...)
|
||||
logger.releaseEntry(entry)
|
||||
}
|
||||
|
||||
func (logger *Logger) Warnln(args ...interface{}) {
|
||||
logger.Logln(WarnLevel, args...)
|
||||
}
|
||||
|
||||
func (logger *Logger) Warningln(args ...interface{}) {
|
||||
logger.Warnln(args...)
|
||||
}
|
||||
|
||||
func (logger *Logger) Errorln(args ...interface{}) {
|
||||
logger.Logln(ErrorLevel, args...)
|
||||
}
|
||||
|
||||
func (logger *Logger) Fatalln(args ...interface{}) {
|
||||
logger.Logln(FatalLevel, args...)
|
||||
logger.Exit(1)
|
||||
}
|
||||
|
||||
func (logger *Logger) Panicln(args ...interface{}) {
|
||||
logger.Logln(PanicLevel, args...)
|
||||
}
|
||||
|
||||
func (logger *Logger) Exit(code int) {
|
||||
runHandlers()
|
||||
if logger.ExitFunc == nil {
|
||||
logger.ExitFunc = os.Exit
|
||||
}
|
||||
logger.ExitFunc(code)
|
||||
}
|
||||
|
||||
//When file is opened with appending mode, it's safe to
|
||||
//write concurrently to a file (within 4k message on Linux).
|
||||
//In these cases user can choose to disable the lock.
|
||||
func (logger *Logger) SetNoLock() {
|
||||
logger.mu.Disable()
|
||||
}
|
||||
|
||||
func (logger *Logger) level() Level {
|
||||
return Level(atomic.LoadUint32((*uint32)(&logger.Level)))
|
||||
}
|
||||
|
||||
// SetLevel sets the logger level.
|
||||
func (logger *Logger) SetLevel(level Level) {
|
||||
atomic.StoreUint32((*uint32)(&logger.Level), uint32(level))
|
||||
}
|
||||
|
||||
// GetLevel returns the logger level.
|
||||
func (logger *Logger) GetLevel() Level {
|
||||
return logger.level()
|
||||
}
|
||||
|
||||
// AddHook adds a hook to the logger hooks.
|
||||
func (logger *Logger) AddHook(hook Hook) {
|
||||
logger.mu.Lock()
|
||||
defer logger.mu.Unlock()
|
||||
logger.Hooks.Add(hook)
|
||||
}
|
||||
|
||||
// IsLevelEnabled checks if the log level of the logger is greater than the level param
|
||||
func (logger *Logger) IsLevelEnabled(level Level) bool {
|
||||
return logger.level() >= level
|
||||
}
|
||||
|
||||
// SetFormatter sets the logger formatter.
|
||||
func (logger *Logger) SetFormatter(formatter Formatter) {
|
||||
logger.mu.Lock()
|
||||
defer logger.mu.Unlock()
|
||||
logger.Formatter = formatter
|
||||
}
|
||||
|
||||
// SetOutput sets the logger output.
|
||||
func (logger *Logger) SetOutput(output io.Writer) {
|
||||
logger.mu.Lock()
|
||||
defer logger.mu.Unlock()
|
||||
logger.Out = output
|
||||
}
|
||||
|
||||
func (logger *Logger) SetReportCaller(reportCaller bool) {
|
||||
logger.mu.Lock()
|
||||
defer logger.mu.Unlock()
|
||||
logger.ReportCaller = reportCaller
|
||||
}
|
||||
|
||||
// ReplaceHooks replaces the logger hooks and returns the old ones
|
||||
func (logger *Logger) ReplaceHooks(hooks LevelHooks) LevelHooks {
|
||||
logger.mu.Lock()
|
||||
oldHooks := logger.Hooks
|
||||
logger.Hooks = hooks
|
||||
logger.mu.Unlock()
|
||||
return oldHooks
|
||||
}
|
@ -0,0 +1,186 @@
|
||||
package logrus
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"log"
|
||||
"strings"
|
||||
)
|
||||
|
||||
// Fields type, used to pass to `WithFields`.
|
||||
type Fields map[string]interface{}
|
||||
|
||||
// Level type
|
||||
type Level uint32
|
||||
|
||||
// Convert the Level to a string. E.g. PanicLevel becomes "panic".
|
||||
func (level Level) String() string {
|
||||
if b, err := level.MarshalText(); err == nil {
|
||||
return string(b)
|
||||
} else {
|
||||
return "unknown"
|
||||
}
|
||||
}
|
||||
|
||||
// ParseLevel takes a string level and returns the Logrus log level constant.
|
||||
func ParseLevel(lvl string) (Level, error) {
|
||||
switch strings.ToLower(lvl) {
|
||||
case "panic":
|
||||
return PanicLevel, nil
|
||||
case "fatal":
|
||||
return FatalLevel, nil
|
||||
case "error":
|
||||
return ErrorLevel, nil
|
||||
case "warn", "warning":
|
||||
return WarnLevel, nil
|
||||
case "info":
|
||||
return InfoLevel, nil
|
||||
case "debug":
|
||||
return DebugLevel, nil
|
||||
case "trace":
|
||||
return TraceLevel, nil
|
||||
}
|
||||
|
||||
var l Level
|
||||
return l, fmt.Errorf("not a valid logrus Level: %q", lvl)
|
||||
}
|
||||
|
||||
// UnmarshalText implements encoding.TextUnmarshaler.
|
||||
func (level *Level) UnmarshalText(text []byte) error {
|
||||
l, err := ParseLevel(string(text))
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
*level = Level(l)
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (level Level) MarshalText() ([]byte, error) {
|
||||
switch level {
|
||||
case TraceLevel:
|
||||
return []byte("trace"), nil
|
||||
case DebugLevel:
|
||||
return []byte("debug"), nil
|
||||
case InfoLevel:
|
||||
return []byte("info"), nil
|
||||
case WarnLevel:
|
||||
return []byte("warning"), nil
|
||||
case ErrorLevel:
|
||||
return []byte("error"), nil
|
||||
case FatalLevel:
|
||||
return []byte("fatal"), nil
|
||||
case PanicLevel:
|
||||
return []byte("panic"), nil
|
||||
}
|
||||
|
||||
return nil, fmt.Errorf("not a valid logrus level %d", level)
|
||||
}
|
||||
|
||||
// A constant exposing all logging levels
|
||||
var AllLevels = []Level{
|
||||
PanicLevel,
|
||||
FatalLevel,
|
||||
ErrorLevel,
|
||||
WarnLevel,
|
||||
InfoLevel,
|
||||
DebugLevel,
|
||||
TraceLevel,
|
||||
}
|
||||
|
||||
// These are the different logging levels. You can set the logging level to log
|
||||
// on your instance of logger, obtained with `logrus.New()`.
|
||||
const (
|
||||
// PanicLevel level, highest level of severity. Logs and then calls panic with the
|
||||
// message passed to Debug, Info, ...
|
||||
PanicLevel Level = iota
|
||||
// FatalLevel level. Logs and then calls `logger.Exit(1)`. It will exit even if the
|
||||
// logging level is set to Panic.
|
||||
FatalLevel
|
||||
// ErrorLevel level. Logs. Used for errors that should definitely be noted.
|
||||
// Commonly used for hooks to send errors to an error tracking service.
|
||||
ErrorLevel
|
||||
// WarnLevel level. Non-critical entries that deserve eyes.
|
||||
WarnLevel
|
||||
// InfoLevel level. General operational entries about what's going on inside the
|
||||
// application.
|
||||
InfoLevel
|
||||
// DebugLevel level. Usually only enabled when debugging. Very verbose logging.
|
||||
DebugLevel
|
||||
// TraceLevel level. Designates finer-grained informational events than the Debug.
|
||||
TraceLevel
|
||||
)
|
||||
|
||||
// Won't compile if StdLogger can't be realized by a log.Logger
|
||||
var (
|
||||
_ StdLogger = &log.Logger{}
|
||||
_ StdLogger = &Entry{}
|
||||
_ StdLogger = &Logger{}
|
||||
)
|
||||
|
||||
// StdLogger is what your logrus-enabled library should take, that way
|
||||
// it'll accept a stdlib logger and a logrus logger. There's no standard
|
||||
// interface, this is the closest we get, unfortunately.
|
||||
type StdLogger interface {
|
||||
Print(...interface{})
|
||||
Printf(string, ...interface{})
|
||||
Println(...interface{})
|
||||
|
||||
Fatal(...interface{})
|
||||
Fatalf(string, ...interface{})
|
||||
Fatalln(...interface{})
|
||||
|
||||
Panic(...interface{})
|
||||
Panicf(string, ...interface{})
|
||||
Panicln(...interface{})
|
||||
}
|
||||
|
||||
// The FieldLogger interface generalizes the Entry and Logger types
|
||||
type FieldLogger interface {
|
||||
WithField(key string, value interface{}) *Entry
|
||||
WithFields(fields Fields) *Entry
|
||||
WithError(err error) *Entry
|
||||
|
||||
Debugf(format string, args ...interface{})
|
||||
Infof(format string, args ...interface{})
|
||||
Printf(format string, args ...interface{})
|
||||
Warnf(format string, args ...interface{})
|
||||
Warningf(format string, args ...interface{})
|
||||
Errorf(format string, args ...interface{})
|
||||
Fatalf(format string, args ...interface{})
|
||||
Panicf(format string, args ...interface{})
|
||||
|
||||
Debug(args ...interface{})
|
||||
Info(args ...interface{})
|
||||
Print(args ...interface{})
|
||||
Warn(args ...interface{})
|
||||
Warning(args ...interface{})
|
||||
Error(args ...interface{})
|
||||
Fatal(args ...interface{})
|
||||
Panic(args ...interface{})
|
||||
|
||||
Debugln(args ...interface{})
|
||||
Infoln(args ...interface{})
|
||||
Println(args ...interface{})
|
||||
Warnln(args ...interface{})
|
||||
Warningln(args ...interface{})
|
||||
Errorln(args ...interface{})
|
||||
Fatalln(args ...interface{})
|
||||
Panicln(args ...interface{})
|
||||
|
||||
// IsDebugEnabled() bool
|
||||
// IsInfoEnabled() bool
|
||||
// IsWarnEnabled() bool
|
||||
// IsErrorEnabled() bool
|
||||
// IsFatalEnabled() bool
|
||||
// IsPanicEnabled() bool
|
||||
}
|
||||
|
||||
// Ext1FieldLogger (the first extension to FieldLogger) is superfluous, it is
|
||||
// here for consistancy. Do not use. Use Logger or Entry instead.
|
||||
type Ext1FieldLogger interface {
|
||||
FieldLogger
|
||||
Tracef(format string, args ...interface{})
|
||||
Trace(args ...interface{})
|
||||
Traceln(args ...interface{})
|
||||
}
|
@ -0,0 +1,11 @@
|
||||
// +build appengine
|
||||
|
||||
package logrus
|
||||
|
||||
import (
|
||||
"io"
|
||||
)
|
||||
|
||||
func checkIfTerminal(w io.Writer) bool {
|
||||
return true
|
||||
}
|
@ -0,0 +1,13 @@
|
||||
// +build darwin dragonfly freebsd netbsd openbsd
|
||||
|
||||
package logrus
|
||||
|
||||
import "golang.org/x/sys/unix"
|
||||
|
||||
const ioctlReadTermios = unix.TIOCGETA
|
||||
|
||||
func isTerminal(fd int) bool {
|
||||
_, err := unix.IoctlGetTermios(fd, ioctlReadTermios)
|
||||
return err == nil
|
||||
}
|
||||
|
@ -0,0 +1,11 @@
|
||||
// +build js nacl plan9
|
||||
|
||||
package logrus
|
||||
|
||||
import (
|
||||
"io"
|
||||
)
|
||||
|
||||
func checkIfTerminal(w io.Writer) bool {
|
||||
return false
|
||||
}
|
@ -0,0 +1,17 @@
|
||||
// +build !appengine,!js,!windows,!nacl,!plan9
|
||||
|
||||
package logrus
|
||||
|
||||
import (
|
||||
"io"
|
||||
"os"
|
||||
)
|
||||
|
||||
func checkIfTerminal(w io.Writer) bool {
|
||||
switch v := w.(type) {
|
||||
case *os.File:
|
||||
return isTerminal(int(v.Fd()))
|
||||
default:
|
||||
return false
|
||||
}
|
||||
}
|
@ -0,0 +1,11 @@
|
||||
package logrus
|
||||
|
||||
import (
|
||||
"golang.org/x/sys/unix"
|
||||
)
|
||||
|
||||
// IsTerminal returns true if the given file descriptor is a terminal.
|
||||
func isTerminal(fd int) bool {
|
||||
_, err := unix.IoctlGetTermio(fd, unix.TCGETA)
|
||||
return err == nil
|
||||
}
|
@ -0,0 +1,13 @@
|
||||
// +build linux aix
|
||||
|
||||
package logrus
|
||||
|
||||
import "golang.org/x/sys/unix"
|
||||
|
||||
const ioctlReadTermios = unix.TCGETS
|
||||
|
||||
func isTerminal(fd int) bool {
|
||||
_, err := unix.IoctlGetTermios(fd, ioctlReadTermios)
|
||||
return err == nil
|
||||
}
|
||||
|
@ -0,0 +1,34 @@
|
||||
// +build !appengine,!js,windows
|
||||
|
||||
package logrus
|
||||
|
||||
import (
|
||||
"io"
|
||||
"os"
|
||||
"syscall"
|
||||
|
||||
sequences "github.com/konsorten/go-windows-terminal-sequences"
|
||||
)
|
||||
|
||||
func initTerminal(w io.Writer) {
|
||||
switch v := w.(type) {
|
||||
case *os.File:
|
||||
sequences.EnableVirtualTerminalProcessing(syscall.Handle(v.Fd()), true)
|
||||
}
|
||||
}
|
||||
|
||||
func checkIfTerminal(w io.Writer) bool {
|
||||
var ret bool
|
||||
switch v := w.(type) {
|
||||
case *os.File:
|
||||
var mode uint32
|
||||
err := syscall.GetConsoleMode(syscall.Handle(v.Fd()), &mode)
|
||||
ret = (err == nil)
|
||||
default:
|
||||
ret = false
|
||||
}
|
||||
if ret {
|
||||
initTerminal(w)
|
||||
}
|
||||
return ret
|
||||
}
|
@ -0,0 +1,295 @@
|
||||
package logrus
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"fmt"
|
||||
"os"
|
||||
"runtime"
|
||||
"sort"
|
||||
"strings"
|
||||
"sync"
|
||||
"time"
|
||||
)
|
||||
|
||||
const (
|
||||
red = 31
|
||||
yellow = 33
|
||||
blue = 36
|
||||
gray = 37
|
||||
)
|
||||
|
||||
var baseTimestamp time.Time
|
||||
|
||||
func init() {
|
||||
baseTimestamp = time.Now()
|
||||
}
|
||||
|
||||
// TextFormatter formats logs into text
|
||||
type TextFormatter struct {
|
||||
// Set to true to bypass checking for a TTY before outputting colors.
|
||||
ForceColors bool
|
||||
|
||||
// Force disabling colors.
|
||||
DisableColors bool
|
||||
|
||||
// Override coloring based on CLICOLOR and CLICOLOR_FORCE. - https://bixense.com/clicolors/
|
||||
EnvironmentOverrideColors bool
|
||||
|
||||
// Disable timestamp logging. useful when output is redirected to logging
|
||||
// system that already adds timestamps.
|
||||
DisableTimestamp bool
|
||||
|
||||
// Enable logging the full timestamp when a TTY is attached instead of just
|
||||
// the time passed since beginning of execution.
|
||||
FullTimestamp bool
|
||||
|
||||
// TimestampFormat to use for display when a full timestamp is printed
|
||||
TimestampFormat string
|
||||
|
||||
// The fields are sorted by default for a consistent output. For applications
|
||||
// that log extremely frequently and don't use the JSON formatter this may not
|
||||
// be desired.
|
||||
DisableSorting bool
|
||||
|
||||
// The keys sorting function, when uninitialized it uses sort.Strings.
|
||||
SortingFunc func([]string)
|
||||
|
||||
// Disables the truncation of the level text to 4 characters.
|
||||
DisableLevelTruncation bool
|
||||
|
||||
// QuoteEmptyFields will wrap empty fields in quotes if true
|
||||
QuoteEmptyFields bool
|
||||
|
||||
// Whether the logger's out is to a terminal
|
||||
isTerminal bool
|
||||
|
||||
// FieldMap allows users to customize the names of keys for default fields.
|
||||
// As an example:
|
||||
// formatter := &TextFormatter{
|
||||
// FieldMap: FieldMap{
|
||||
// FieldKeyTime: "@timestamp",
|
||||
// FieldKeyLevel: "@level",
|
||||
// FieldKeyMsg: "@message"}}
|
||||
FieldMap FieldMap
|
||||
|
||||
// CallerPrettyfier can be set by the user to modify the content
|
||||
// of the function and file keys in the data when ReportCaller is
|
||||
// activated. If any of the returned value is the empty string the
|
||||
// corresponding key will be removed from fields.
|
||||
CallerPrettyfier func(*runtime.Frame) (function string, file string)
|
||||
|
||||
terminalInitOnce sync.Once
|
||||
}
|
||||
|
||||
func (f *TextFormatter) init(entry *Entry) {
|
||||
if entry.Logger != nil {
|
||||
f.isTerminal = checkIfTerminal(entry.Logger.Out)
|
||||
}
|
||||
}
|
||||
|
||||
func (f *TextFormatter) isColored() bool {
|
||||
isColored := f.ForceColors || (f.isTerminal && (runtime.GOOS != "windows"))
|
||||
|
||||
if f.EnvironmentOverrideColors {
|
||||
if force, ok := os.LookupEnv("CLICOLOR_FORCE"); ok && force != "0" {
|
||||
isColored = true
|
||||
} else if ok && force == "0" {
|
||||
isColored = false
|
||||
} else if os.Getenv("CLICOLOR") == "0" {
|
||||
isColored = false
|
||||
}
|
||||
}
|
||||
|
||||
return isColored && !f.DisableColors
|
||||
}
|
||||
|
||||
// Format renders a single log entry
|
||||
func (f *TextFormatter) Format(entry *Entry) ([]byte, error) {
|
||||
data := make(Fields)
|
||||
for k, v := range entry.Data {
|
||||
data[k] = v
|
||||
}
|
||||
prefixFieldClashes(data, f.FieldMap, entry.HasCaller())
|
||||
keys := make([]string, 0, len(data))
|
||||
for k := range data {
|
||||
keys = append(keys, k)
|
||||
}
|
||||
|
||||
var funcVal, fileVal string
|
||||
|
||||
fixedKeys := make([]string, 0, 4+len(data))
|
||||
if !f.DisableTimestamp {
|
||||
fixedKeys = append(fixedKeys, f.FieldMap.resolve(FieldKeyTime))
|
||||
}
|
||||
fixedKeys = append(fixedKeys, f.FieldMap.resolve(FieldKeyLevel))
|
||||
if entry.Message != "" {
|
||||
fixedKeys = append(fixedKeys, f.FieldMap.resolve(FieldKeyMsg))
|
||||
}
|
||||
if entry.err != "" {
|
||||
fixedKeys = append(fixedKeys, f.FieldMap.resolve(FieldKeyLogrusError))
|
||||
}
|
||||
if entry.HasCaller() {
|
||||
if f.CallerPrettyfier != nil {
|
||||
funcVal, fileVal = f.CallerPrettyfier(entry.Caller)
|
||||
} else {
|
||||
funcVal = entry.Caller.Function
|
||||
fileVal = fmt.Sprintf("%s:%d", entry.Caller.File, entry.Caller.Line)
|
||||
}
|
||||
|
||||
if funcVal != "" {
|
||||
fixedKeys = append(fixedKeys, f.FieldMap.resolve(FieldKeyFunc))
|
||||
}
|
||||
if fileVal != "" {
|
||||
fixedKeys = append(fixedKeys, f.FieldMap.resolve(FieldKeyFile))
|
||||
}
|
||||
}
|
||||
|
||||
if !f.DisableSorting {
|
||||
if f.SortingFunc == nil {
|
||||
sort.Strings(keys)
|
||||
fixedKeys = append(fixedKeys, keys...)
|
||||
} else {
|
||||
if !f.isColored() {
|
||||
fixedKeys = append(fixedKeys, keys...)
|
||||
f.SortingFunc(fixedKeys)
|
||||
} else {
|
||||
f.SortingFunc(keys)
|
||||
}
|
||||
}
|
||||
} else {
|
||||
fixedKeys = append(fixedKeys, keys...)
|
||||
}
|
||||
|
||||
var b *bytes.Buffer
|
||||
if entry.Buffer != nil {
|
||||
b = entry.Buffer
|
||||
} else {
|
||||
b = &bytes.Buffer{}
|
||||
}
|
||||
|
||||
f.terminalInitOnce.Do(func() { f.init(entry) })
|
||||
|
||||
timestampFormat := f.TimestampFormat
|
||||
if timestampFormat == "" {
|
||||
timestampFormat = defaultTimestampFormat
|
||||
}
|
||||
if f.isColored() {
|
||||
f.printColored(b, entry, keys, data, timestampFormat)
|
||||
} else {
|
||||
|
||||
for _, key := range fixedKeys {
|
||||
var value interface{}
|
||||
switch {
|
||||
case key == f.FieldMap.resolve(FieldKeyTime):
|
||||
value = entry.Time.Format(timestampFormat)
|
||||
case key == f.FieldMap.resolve(FieldKeyLevel):
|
||||
value = entry.Level.String()
|
||||
case key == f.FieldMap.resolve(FieldKeyMsg):
|
||||
value = entry.Message
|
||||
case key == f.FieldMap.resolve(FieldKeyLogrusError):
|
||||
value = entry.err
|
||||
case key == f.FieldMap.resolve(FieldKeyFunc) && entry.HasCaller():
|
||||
value = funcVal
|
||||
case key == f.FieldMap.resolve(FieldKeyFile) && entry.HasCaller():
|
||||
value = fileVal
|
||||
default:
|
||||
value = data[key]
|
||||
}
|
||||
f.appendKeyValue(b, key, value)
|
||||
}
|
||||
}
|
||||
|
||||
b.WriteByte('\n')
|
||||
return b.Bytes(), nil
|
||||
}
|
||||
|
||||
func (f *TextFormatter) printColored(b *bytes.Buffer, entry *Entry, keys []string, data Fields, timestampFormat string) {
|
||||
var levelColor int
|
||||
switch entry.Level {
|
||||
case DebugLevel, TraceLevel:
|
||||
levelColor = gray
|
||||
case WarnLevel:
|
||||
levelColor = yellow
|
||||
case ErrorLevel, FatalLevel, PanicLevel:
|
||||
levelColor = red
|
||||
default:
|
||||
levelColor = blue
|
||||
}
|
||||
|
||||
levelText := strings.ToUpper(entry.Level.String())
|
||||
if !f.DisableLevelTruncation {
|
||||
levelText = levelText[0:4]
|
||||
}
|
||||
|
||||
// Remove a single newline if it already exists in the message to keep
|
||||
// the behavior of logrus text_formatter the same as the stdlib log package
|
||||
entry.Message = strings.TrimSuffix(entry.Message, "\n")
|
||||
|
||||
caller := ""
|
||||
if entry.HasCaller() {
|
||||
funcVal := fmt.Sprintf("%s()", entry.Caller.Function)
|
||||
fileVal := fmt.Sprintf("%s:%d", entry.Caller.File, entry.Caller.Line)
|
||||
|
||||
if f.CallerPrettyfier != nil {
|
||||
funcVal, fileVal = f.CallerPrettyfier(entry.Caller)
|
||||
}
|
||||
|
||||
if fileVal == "" {
|
||||
caller = funcVal
|
||||
} else if funcVal == "" {
|
||||
caller = fileVal
|
||||
} else {
|
||||
caller = fileVal + " " + funcVal
|
||||
}
|
||||
}
|
||||
|
||||
if f.DisableTimestamp {
|
||||
fmt.Fprintf(b, "\x1b[%dm%s\x1b[0m%s %-44s ", levelColor, levelText, caller, entry.Message)
|
||||
} else if !f.FullTimestamp {
|
||||
fmt.Fprintf(b, "\x1b[%dm%s\x1b[0m[%04d]%s %-44s ", levelColor, levelText, int(entry.Time.Sub(baseTimestamp)/time.Second), caller, entry.Message)
|
||||
} else {
|
||||
fmt.Fprintf(b, "\x1b[%dm%s\x1b[0m[%s]%s %-44s ", levelColor, levelText, entry.Time.Format(timestampFormat), caller, entry.Message)
|
||||
}
|
||||
for _, k := range keys {
|
||||
v := data[k]
|
||||
fmt.Fprintf(b, " \x1b[%dm%s\x1b[0m=", levelColor, k)
|
||||
f.appendValue(b, v)
|
||||
}
|
||||
}
|
||||
|
||||
func (f *TextFormatter) needsQuoting(text string) bool {
|
||||
if f.QuoteEmptyFields && len(text) == 0 {
|
||||
return true
|
||||
}
|
||||
for _, ch := range text {
|
||||
if !((ch >= 'a' && ch <= 'z') ||
|
||||
(ch >= 'A' && ch <= 'Z') ||
|
||||
(ch >= '0' && ch <= '9') ||
|
||||
ch == '-' || ch == '.' || ch == '_' || ch == '/' || ch == '@' || ch == '^' || ch == '+') {
|
||||
return true
|
||||
}
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
func (f *TextFormatter) appendKeyValue(b *bytes.Buffer, key string, value interface{}) {
|
||||
if b.Len() > 0 {
|
||||
b.WriteByte(' ')
|
||||
}
|
||||
b.WriteString(key)
|
||||
b.WriteByte('=')
|
||||
f.appendValue(b, value)
|
||||
}
|
||||
|
||||
func (f *TextFormatter) appendValue(b *bytes.Buffer, value interface{}) {
|
||||
stringVal, ok := value.(string)
|
||||
if !ok {
|
||||
stringVal = fmt.Sprint(value)
|
||||
}
|
||||
|
||||
if !f.needsQuoting(stringVal) {
|
||||
b.WriteString(stringVal)
|
||||
} else {
|
||||
b.WriteString(fmt.Sprintf("%q", stringVal))
|
||||
}
|
||||
}
|
@ -0,0 +1,64 @@
|
||||
package logrus
|
||||
|
||||
import (
|
||||
"bufio"
|
||||
"io"
|
||||
"runtime"
|
||||
)
|
||||
|
||||
func (logger *Logger) Writer() *io.PipeWriter {
|
||||
return logger.WriterLevel(InfoLevel)
|
||||
}
|
||||
|
||||
func (logger *Logger) WriterLevel(level Level) *io.PipeWriter {
|
||||
return NewEntry(logger).WriterLevel(level)
|
||||
}
|
||||
|
||||
func (entry *Entry) Writer() *io.PipeWriter {
|
||||
return entry.WriterLevel(InfoLevel)
|
||||
}
|
||||
|
||||
func (entry *Entry) WriterLevel(level Level) *io.PipeWriter {
|
||||
reader, writer := io.Pipe()
|
||||
|
||||
var printFunc func(args ...interface{})
|
||||
|
||||
switch level {
|
||||
case TraceLevel:
|
||||
printFunc = entry.Trace
|
||||
case DebugLevel:
|
||||
printFunc = entry.Debug
|
||||
case InfoLevel:
|
||||
printFunc = entry.Info
|
||||
case WarnLevel:
|
||||
printFunc = entry.Warn
|
||||
case ErrorLevel:
|
||||
printFunc = entry.Error
|
||||
case FatalLevel:
|
||||
printFunc = entry.Fatal
|
||||
case PanicLevel:
|
||||
printFunc = entry.Panic
|
||||
default:
|
||||
printFunc = entry.Print
|
||||
}
|
||||
|
||||
go entry.writerScanner(reader, printFunc)
|
||||
runtime.SetFinalizer(writer, writerFinalizer)
|
||||
|
||||
return writer
|
||||
}
|
||||
|
||||
func (entry *Entry) writerScanner(reader *io.PipeReader, printFunc func(args ...interface{})) {
|
||||
scanner := bufio.NewScanner(reader)
|
||||
for scanner.Scan() {
|
||||
printFunc(scanner.Text())
|
||||
}
|
||||
if err := scanner.Err(); err != nil {
|
||||
entry.Errorf("Error while reading from Writer: %s", err)
|
||||
}
|
||||
reader.Close()
|
||||
}
|
||||
|
||||
func writerFinalizer(writer *io.PipeWriter) {
|
||||
writer.Close()
|
||||
}
|
@ -0,0 +1,3 @@
|
||||
# This source code refers to The Go Authors for copyright purposes.
|
||||
# The master list of authors is in the main Go distribution,
|
||||
# visible at http://tip.golang.org/AUTHORS.
|
@ -0,0 +1,3 @@
|
||||
# This source code was written by the Go contributors.
|
||||
# The master list of contributors is in the main Go distribution,
|
||||
# visible at http://tip.golang.org/CONTRIBUTORS.
|
@ -0,0 +1,27 @@
|
||||
Copyright (c) 2009 The Go Authors. All rights reserved.
|
||||
|
||||
Redistribution and use in source and binary forms, with or without
|
||||
modification, are permitted provided that the following conditions are
|
||||
met:
|
||||
|
||||
* Redistributions of source code must retain the above copyright
|
||||
notice, this list of conditions and the following disclaimer.
|
||||
* Redistributions in binary form must reproduce the above
|
||||
copyright notice, this list of conditions and the following disclaimer
|
||||
in the documentation and/or other materials provided with the
|
||||
distribution.
|
||||
* Neither the name of Google Inc. nor the names of its
|
||||
contributors may be used to endorse or promote products derived from
|
||||
this software without specific prior written permission.
|
||||
|
||||
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
||||
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
||||
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||||
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
||||
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||||
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||||
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
||||
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
@ -0,0 +1,22 @@
|
||||
Additional IP Rights Grant (Patents)
|
||||
|
||||
"This implementation" means the copyrightable works distributed by
|
||||
Google as part of the Go project.
|
||||
|
||||
Google hereby grants to You a perpetual, worldwide, non-exclusive,
|
||||
no-charge, royalty-free, irrevocable (except as stated in this section)
|
||||
patent license to make, have made, use, offer to sell, sell, import,
|
||||
transfer and otherwise run, modify and propagate the contents of this
|
||||
implementation of Go, where such license applies only to those patent
|
||||
claims, both currently owned or controlled by Google and acquired in
|
||||
the future, licensable by Google that are necessarily infringed by this
|
||||
implementation of Go. This grant does not include claims that would be
|
||||
infringed only as a consequence of further modification of this
|
||||
implementation. If you or your agent or exclusive licensee institute or
|
||||
order or agree to the institution of patent litigation against any
|
||||
entity (including a cross-claim or counterclaim in a lawsuit) alleging
|
||||
that this implementation of Go or any code incorporated within this
|
||||
implementation of Go constitutes direct or contributory patent
|
||||
infringement, or inducement of patent infringement, then any patent
|
||||
rights granted to you under this License for this implementation of Go
|
||||
shall terminate as of the date such litigation is filed.
|
Some files were not shown because too many files have changed in this diff Show More
Loading…
Reference in New Issue