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Add command line flag to disable XEP-0474: SASL SCRAM Downgrade Protection.

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v0.9
Martin Dosch 2 months ago
parent b9018ec2d9
commit ca268e957e
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GPG Key ID: 52A57CFCE13D657D
8 changed files with 19 additions and 7 deletions
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1
CHANGELOG.md
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@ -6,6 +6,7 @@
- Properly close stream if `Ctrl+C` is pressed in listening mode.
- Print OS, architecture and go version for flag `--version`.
- Improve closing of connection (via go-xmpp v0.1.3).
- New command line flag `SSDP-off` to disable XEP-0474: SASL SCRAM Downgrade Protection (requires go-xmpp > v0.1.3).
## [v0.8.4] 2024-03-09
### Changed

3
README.md
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@ -75,7 +75,7 @@ If no configuration file is present or if the values should be overridden it is
the account details via command line options:
```plain
Usage: go-sendxmpp [-cdilnt] [-a value] [-f value] [--headline] [--help] [-h value] [-j value] [-m value] [--muc-password value] [--oob-file value] [--ox] [--ox-delete-nodes] [--ox-genprivkey-rsa] [--ox-genprivkey-x25519] [--ox-import-privkey value] [--ox-passphrase value] [-p value] [--raw] [--scram-mech-pinning value] [--timeout value] [--tls-version value] [-u value] [--version] [recipients…]
Usage: go-sendxmpp [-cdilnt] [-a value] [-f value] [--headline] [--help] [-h value] [-j value] [-m value] [--muc-password value] [--oob-file value] [--ox] [--ox-delete-nodes] [--ox-genprivkey-rsa] [--ox-genprivkey-x25519] [--ox-import-privkey value] [--ox-passphrase value] [-p value] [--raw] [--scram-mech-pinning value] [--SSDP-off] [--timeout value] [--tls-version value] [-u value] [--version] [recipients…]
-a, --alias=value Set alias/nicknamefor chatrooms.
-c, --chatroom Send message to a chatroom.
-d, --debug Show debugging info.
@ -116,6 +116,7 @@ Usage: go-sendxmpp [-cdilnt] [-a value] [-f value] [--headline] [--help] [-h val
--raw Send raw XML.
--scram-mech-pinning=value
Enforce the use of a certain SCRAM authentication mechanism.
--SSDP-off Disable XEP-0474: SASL SCRAM Downgrade Protection.
--timeout=value
Connection timeout in seconds. [10]
-t, --tls Use direct TLS.

2
go.mod
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@ -7,7 +7,7 @@ require (
github.com/beevik/etree v1.3.0
github.com/gabriel-vasile/mimetype v1.4.3
github.com/pborman/getopt/v2 v2.1.0
github.com/xmppo/go-xmpp v0.1.4-0.20240326182619-bc81053dbcc0
github.com/xmppo/go-xmpp v0.1.4-0.20240326203615-862c21f845b0
salsa.debian.org/mdosch/xmppsrv v0.2.6
)

4
go.sum
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@ -25,8 +25,8 @@ github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZN
github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
github.com/stretchr/testify v1.7.0 h1:nwc3DEeHmmLAfoZucVR881uASk0Mfjw8xYJ99tb5CcY=
github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
github.com/xmppo/go-xmpp v0.1.4-0.20240326182619-bc81053dbcc0 h1:ApKIu0yuChFMs1W84Se1Df9R5BYuL5TLfBWzTpS/TVU=
github.com/xmppo/go-xmpp v0.1.4-0.20240326182619-bc81053dbcc0/go.mod h1:yyTnJMs6I6KUKv3BjXc4i3NU/iWBxY3yBGiUvUcW0Qg=
github.com/xmppo/go-xmpp v0.1.4-0.20240326203615-862c21f845b0 h1:vk8yO+cYE4ZW2mYQpvyCwryOkmdvxZWainjy9ZXjn/s=
github.com/xmppo/go-xmpp v0.1.4-0.20240326203615-862c21f845b0/go.mod h1:yyTnJMs6I6KUKv3BjXc4i3NU/iWBxY3yBGiUvUcW0Qg=
github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=

2
main.go
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@ -134,6 +134,7 @@ func main() {
flagOOBFile := getopt.StringLong("oob-file", 0, "", "URL to send a file as out of band data.")
flagHeadline := getopt.BoolLong("headline", 0, "Send message as type headline.")
flagSCRAMPinning := getopt.StringLong("scram-mech-pinning", 0, "", "Enforce the use of a certain SCRAM authentication mechanism.")
flagSSDPOff := getopt.BoolLong("SSDP-off", 0, "Disable XEP-0474: SASL SCRAM Downgrade Protection.")
// Parse command line flags.
getopt.Parse()
@ -285,6 +286,7 @@ func main() {
Debug: *flagDebug,
TLSConfig: &tlsConfig,
Mechanism: *flagSCRAMPinning,
SSDP: !*flagSSDPOff,
}
// Read message from file.

5
man/go-sendxmpp.1
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@ -4,7 +4,7 @@
.SH "NAME"
\fBgo\-sendxmpp\fR \- A tool to send messages to an XMPP contact or MUC\.
.SH "SYNOPSIS"
\fBgo\-sendxmpp [\-cdilnt] [\-a value] [\-f value] [\-\-headline] [\-\-help] [\-h value] [\-j value] [\-m value] [\-\-muc\-password value] [\-\-oob\-file value] [\-\-ox] [\-\-ox\-delete\-nodes] [\-\-ox\-genprivkey\-rsa] [\-\-ox\-genprivkey\-x25519] [\-\-ox\-import\-privkey value] [\-\-ox\-passphrase value] [\-p value] [\-\-raw] [\-\-scram\-mech\-pinning value] [\-\-timeout value] [\-\-tls\-version value] [\-u value] [\-\-version] [recipients…]\fR
\fBgo\-sendxmpp [\-cdilnt] [\-a value] [\-f value] [\-\-headline] [\-\-help] [\-h value] [\-j value] [\-m value] [\-\-muc\-password value] [\-\-oob\-file value] [\-\-ox] [\-\-ox\-delete\-nodes] [\-\-ox\-genprivkey\-rsa] [\-\-ox\-genprivkey\-x25519] [\-\-ox\-import\-privkey value] [\-\-ox\-passphrase value] [\-p value] [\-\-raw] [\-\-scram\-mech\-pinning value] [\-\-SSDP\-off] [\-\-timeout value] [\-\-tls\-version value] [\-u value] [\-\-version] [recipients…]\fR
.SH "DESCRIPTION"
A tool to send messages to an XMPP contact or MUC inspired by \fBsendxmpp\fR\.
.br
@ -89,6 +89,9 @@ Send raw XML\. To send raw XML to a contact as normal chat message no contact mu
\fB\-\-scram\-mech\-pinning=[<value>]\fR
Enforce the use of a certain SCRAM authentication mechanism\. Currently go\-sendxmpp supports \fBSCRAM\-SHA\-1\fR, \fBSCRAM\-SHA\-1\-PLUS\fR, \fBSCRAM\-SHA\-256\fR, \fBSCRAM\-SHA\-256\-PLUS\fR, \fBSCRAM\-SHA\-512\fR and \fBSCRAM\-SHA\-512\-PLUS\fR\. You should know what you are doing when using this setting and make sure the chosen mechanism is supported by the server\. If not set, go\-sendxmpp will use XEP\-0474 to prevent downgrade attacks (needs server support)\.
.TP
\fB\-\-SSDP\-off\fR
Disable XEP\-0474: SASL SCRAM Downgrade Protection\.
.TP
\fB\-\-timeout=\fR[\fIvalue\fR]
Connection timeout in seconds\. (Default: 10)
.TP

4
man/go-sendxmpp.1.html
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@ -82,7 +82,7 @@
<p><code>go-sendxmpp [-cdilnt] [-a value] [-f value] [--headline] [--help] [-h value] [-j value] [-m value] [--muc-password value]
[--oob-file value] [--ox] [--ox-delete-nodes] [--ox-genprivkey-rsa] [--ox-genprivkey-x25519] [--ox-import-privkey value]
[--ox-passphrase value] [-p value] [--raw] [--scram-mech-pinning value] [--timeout value] [--tls-version value] [-u value]
[--ox-passphrase value] [-p value] [--raw] [--scram-mech-pinning value] [--SSDP-off] [--timeout value] [--tls-version value] [-u value]
[--version] [recipients…]</code></p>
<h2 id="DESCRIPTION">DESCRIPTION</h2>
@ -191,6 +191,8 @@ To send raw XML to a MUC you have to specify the MUC via <code>-c</code> and go-
and <strong>SCRAM-SHA-512-PLUS</strong>. You should know what you are doing when using this setting and
make sure the chosen mechanism is supported by the server. If not set, go-sendxmpp will use XEP-0474
to prevent downgrade attacks (needs server support).</dd>
<dt><code>--SSDP-off</code></dt>
<dd>Disable XEP-0474: SASL SCRAM Downgrade Protection.</dd>
<dt>
<code>--timeout=</code>[<var>value</var>]</dt>
<dd>Connection timeout in seconds. (Default: 10)</dd>

5
man/go-sendxmpp.1.ronn
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@ -5,7 +5,7 @@ go-sendxmpp(1) -- A tool to send messages to an XMPP contact or MUC.
`go-sendxmpp [-cdilnt] [-a value] [-f value] [--headline] [--help] [-h value] [-j value] [-m value] [--muc-password value]
[--oob-file value] [--ox] [--ox-delete-nodes] [--ox-genprivkey-rsa] [--ox-genprivkey-x25519] [--ox-import-privkey value]
[--ox-passphrase value] [-p value] [--raw] [--scram-mech-pinning value] [--timeout value] [--tls-version value] [-u value]
[--ox-passphrase value] [-p value] [--raw] [--scram-mech-pinning value] [--SSDP-off] [--timeout value] [--tls-version value] [-u value]
[--version] [recipients…]`
## DESCRIPTION
@ -117,6 +117,9 @@ and **SCRAM-SHA-512-PLUS**. You should know what you are doing when using this s
make sure the chosen mechanism is supported by the server. If not set, go-sendxmpp will use XEP-0474
to prevent downgrade attacks (needs server support).
* `--SSDP-off`:
Disable XEP-0474: SASL SCRAM Downgrade Protection.
* `--timeout=`[<value>]:
Connection timeout in seconds. (Default: 10)

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