@ -7,15 +7,21 @@ local InfoMessage = require("ui/widget/infomessage")
local LuaSettings = require ( " luasettings " )
local MultiConfirmBox = require ( " ui/widget/multiconfirmbox " )
local UIManager = require ( " ui/uimanager " )
local ffi = require ( " ffi " )
local ffiutil = require ( " ffi/util " )
local logger = require ( " logger " )
local util = require ( " util " )
local _ = require ( " gettext " )
local C = ffi.C
local T = ffiutil.template
-- We'll need a bunch of stuff for getifaddrs in NetworkMgr:ifHasAnAddress
require ( " ffi/posix_h " )
local NetworkMgr = {
is_wifi_on = false ,
is_connected = false ,
interface = nil ,
}
function NetworkMgr : readNWSettings ( )
@ -77,12 +83,8 @@ function NetworkMgr:scheduleConnectivityCheck(callback, widget)
end
function NetworkMgr : init ( )
-- On Kobo, kill Wi-Fi if NetworkMgr:isWifiOn() and NOT NetworkMgr:isConnected()
-- (i.e., if the launcher left the Wi-Fi in an inconsistent state: modules loaded, but no route to gateway).
if Device : isKobo ( ) and self : isWifiOn ( ) and not self : isConnected ( ) then
logger.info ( " Kobo Wi-Fi: Left in an inconsistent state by launcher! " )
self : turnOffWifi ( )
end
Device : initNetworkManager ( self )
self.interface = self : getNetworkInterfaceName ( )
self : queryNetworkState ( )
self.wifi_was_on = G_reader_settings : isTrue ( " wifi_was_on " )
@ -99,6 +101,8 @@ function NetworkMgr:init()
UIManager : scheduleIn ( 2 , UIManager.broadcastEvent , UIManager , Event : new ( " NetworkConnected " ) )
end
end
return self
end
-- Following methods are Device specific which need to be initialized in
@ -120,23 +124,23 @@ function NetworkMgr:releaseIP() end
function NetworkMgr : restoreWifiAsync ( ) end
-- End of device specific methods
-- Helper fuctions for devices that use the sysfs entry to check connectivity.
-- Helper functions for devices that use sysfs entries to check connectivity.
function NetworkMgr : sysfsWifiOn ( )
-- Network interface directory exists while the Wi-Fi module is loaded.
local net_if = self : getNetworkInterfaceName ( )
return util.pathExists ( " /sys/class/net/ " .. net_if )
-- Network interface directory only exists as long as the Wi-Fi module is loaded
return util.pathExists ( " /sys/class/net/ " .. self.interface )
end
function NetworkMgr : sysfsCarrierConnected ( )
-- Read carrier state from sysfs.
-- NOTE: We can afford to use CLOEXEC, as devices too old for it don't support Wi-Fi anyway ;)
local out
local net_if = self : getNetworkInterfaceName ( )
local file = io.open ( " /sys/class/net/ " .. net_if .. " /carrier " , " re " )
local file = io.open ( " /sys/class/net/ " .. self.interface .. " /carrier " , " re " )
-- File only exists while Wi-Fi module is loaded.
-- File only exists while the Wi-Fi module is loaded, but may fail to read until the interface is brought up .
if file then
-- 0 means not connected, 1 connected
-- 0 means the interface is down, 1 that it's up
-- (technically, it reflects the state of the physical link (e.g., plugged in or not for Ethernet))
-- This does *NOT* represent network association state for Wi-Fi (it'll return 1 as soon as ifup)!
out = file : read ( " *number " )
file : close ( )
end
@ -144,6 +148,108 @@ function NetworkMgr:sysfsCarrierConnected()
return out == 1
end
function NetworkMgr : sysfsInterfaceOperational ( )
-- Reads the interface's RFC2863 operational state from sysfs, and wait for it to be up
-- (For Wi-Fi, that means associated & successfully authenticated)
local out
local file = io.open ( " /sys/class/net/ " .. self.interface .. " /operstate " , " re " )
-- Possible values: "unknown", "notpresent", "down", "lowerlayerdown", "testing", "dormant", "up"
-- (c.f., Linux's <Documentation/ABI/testing/sysfs-class-net>)
-- We're *assuming* all the drivers we care about implement this properly, so we can just rely on checking for "up".
-- On unsupported drivers, this would be stuck on "unknown" (c.f., Linux's <Documentation/networking/operstates.rst>)
-- NOTE: This does *NOT* mean the interface has been assigned an IP!
if file then
out = file : read ( " *l " )
file : close ( )
end
return out == " up "
end
-- This relies on the BSD API instead of the Linux ioctls (netdevice(7)), because handling IPv6 is slightly less painful this way...
function NetworkMgr : ifHasAnAddress ( )
-- If the interface isn't operationally up, no need to go any further
if not self : sysfsInterfaceOperational ( ) then
logger.dbg ( " NetworkMgr: interface is not operational yet " )
return false
end
-- It's up, do the getifaddrs dance to see if it was assigned an IP yet...
-- c.f., getifaddrs(3)
local ifaddr = ffi.new ( " struct ifaddrs *[1] " )
if C.getifaddrs ( ifaddr ) == - 1 then
local errno = ffi.errno ( )
logger.err ( " NetworkMgr: getifaddrs: " , ffi.string ( C.strerror ( errno ) ) )
return false
end
local ok
local ifa = ifaddr [ 0 ]
while ifa ~= nil do
if ifa.ifa_addr ~= nil and C.strcmp ( ifa.ifa_name , self.interface ) == 0 then
local family = ifa.ifa_addr . sa_family
if family == C.AF_INET or family == C.AF_INET6 then
local host = ffi.new ( " char[?] " , C.NI_MAXHOST )
local s = C.getnameinfo ( ifa.ifa_addr ,
family == C.AF_INET and ffi.sizeof ( " struct sockaddr_in " ) or ffi.sizeof ( " struct sockaddr_in6 " ) ,
host , C.NI_MAXHOST ,
nil , 0 ,
C.NI_NUMERICHOST )
if s ~= 0 then
logger.err ( " NetworkMgr: getnameinfo: " , ffi.string ( C.gai_strerror ( s ) ) )
ok = false
else
logger.dbg ( " NetworkMgr: interface " , self.interface , " is up @ " , ffi.string ( host ) )
ok = true
end
-- Regardless of failure, we only check a single if, so we're done
break
end
end
ifa = ifa.ifa_next
end
C.freeifaddrs ( ifaddr [ 0 ] )
return ok
end
--[[
-- This would be the aforementioned Linux ioctl approach
# include < stdio.h >
# include < stdlib.h >
# include < unistd.h >
# include < sys / ioctl.h >
# include < sys / socket.h >
# include < netdb.h >
# include < string.h >
# include < net / if . h >
# include < netinet / in . h >
# include < arpa / inet.h >
int main ( int argc , char * argv [ ] ) {
// Querying IPv6 would require a different in6_ifreq struct and more hoop - jumping ...
struct ifreq ifr ;
struct sockaddr_in sai ;
strncpy ( ifr.ifr_name , *++ argv , IFNAMSIZ ) ;
int fd = socket ( PF_INET , SOCK_DGRAM , 0 ) ;
ioctl ( fd , SIOCGIFADDR , & ifr ) ;
close ( fd ) ;
/*
// inet_ntoa is deprecated
memcpy ( & sai , & ifr.ifr_addr , sizeof ( sai ) ) ;
printf ( " ifr.ifr_addr: %s \n " , inet_ntoa ( sai.sin_addr ) ) ;
*/
char host [ NI_MAXHOST ] ;
int s = getnameinfo ( & ifr.ifr_addr , sizeof ( struct sockaddr_in ) , host , NI_MAXHOST , NULL , 0 , NI_NUMERICHOST ) ;
printf ( " ifr.ifr_addr: %s \n " , host ) ;
return EXIT_SUCCESS ;
}
--]]
function NetworkMgr : toggleWifiOn ( complete_callback , long_press )
local toggle_im = InfoMessage : new {
text = _ ( " Turning on Wi-Fi… " ) ,
@ -740,8 +846,4 @@ if G_defaults:readSetting("NETWORK_PROXY") then
NetworkMgr : setHTTPProxy ( G_defaults : readSetting ( " NETWORK_PROXY " ) )
end
Device : initNetworkManager ( NetworkMgr )
NetworkMgr : init ( )
return NetworkMgr
return NetworkMgr : init ( )
NiLuJe
1 year ago
committed by
GitHub