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I got bored of some functionality that was missing in netcfg for the configuration of wpa_supplicant, so decided to add it. It takes the configuration from a string in the netcfg config, not from a separate file or in a very limited format.
It actually allows you to also add a config file in the normal way. The contents of the file will be placed before what is put in the netcfg profile.
I also made some small tweaks, like removing the configuration for wpa_supplicant after it has been used. In the original code it is left lying around in /tmp.
A sample profile:
DESCRIPTION="Wireless connection to someplace"
IP="dhcp"
DHCP_TIMEOUT=20
DHCP_OPTIONS=""
CONNECTION="wireless-custom"
INTERFACE=wlan0
WPAOPTS="-D wext"
TIMEOUT=15
SECURITY="wpa-custom"
WPA_CUSTOM='
ctrl_interface=/var/run/wpa_supplicant
ctrl_interface_group=wheel
ap_scan=1
update_config=0
network={
ssid="myssid"
bssid=00:00:00:00:00:00
pairwise=CCMP
group=TKIP
key_mgmt=WPA-PSK
auth_alg=OPEN
psk="mypsk"
priority=700
}
'Here is the code, place it as "/usr/lib/network/wireless-custom.subr". It could easily be incorporated in wireless.subr with minor modifications since it is based on it. But I put it as a separate file so I could keep the old one side by side for now.
#! /bin/bash
# Uses wpa_supplicant to check for association to a network
# wpa_check interface [timeout]
wpa_check()
{
INTERFACE=$1; TIMEOUT=$2
[[ -z "$TIMEOUT" ]] && TIMEOUT=15
let timeout=0
while [[ $timeout -ne $TIMEOUT ]]; do
eval `wpa_cli status|grep wpa_state`
[[ "$wpa_state" = "COMPLETED" ]] && return 0
sleep 1
let timeout++
done
wpa_cli terminate >/dev/null 2>&1
err_append "Wireless association failed."
return 1
}
# Uses wireless_tools, to check for association to a network.
# wep_check interface [timeout]
wep_check()
{
INTERFACE=$1; TIMEOUT=$2
[[ -z "$TIMEOUT" ]] && TIMEOUT=15
let timeout=0
while [[ $timeout -ne $TIMEOUT ]]; do
bssid=`iwgetid $INTERFACE -ra`
[[ ! "$bssid" = "00:00:00:00:00:00" ]] && return 0
sleep 1
let timeout++
done
err_append "Wireless association failed."
return 1
}
# Check if a particular network is within range
# find_essid interface essid
find_essid()
{
INTERFACE=$1; ESSID=$2; RETRIES=5
try=0;
while [[ $try -ne $RETRIES ]]; do
if iwlist $INTERFACE scan|sed "s/ESSID://g"|grep -q "\"$ESSID\""; then
return 0 # network found
fi
sleep 1
let try++
done
return 1
}
# Return a filename containing a list of network ESSID's found.
# list_networks interface
list_networks()
{
# temp file used, as keeping ESSID's with spaces in their name in arrays
# is hard, obscure and kinda nasty. This is simpler and clearer.
[[ -z "$1" ]] && return 1
essids=$(mktemp /tmp/essid.XXXXX)
let try=0;
RETRIES=6;
while [[ $try -ne $RETRIES ]]; do
iwlist $1 scan 2> /dev/null|grep ESSID|sed 's/.*ESSID:"\([^"]\+\)".*/\1/' > $essids
sleep 0.5; let try++
done
sort -u $essids -o $essids
# File of 0 length, ie. no ssid's.
if [[ ! -s $essids ]]; then
return 1
fi
echo $essids
return 0
}
start_wpa()
{
INTERFACE=$1; WPA_CONF=$2; WPA_OPTS=$3
[[ "$WPA_OPTS" == "" ]] && WPA_OPTS="-Dwext"
wpa_supplicant -wB -P/var/run/wpa_supplicant_${INTERFACE}.pid -i${INTERFACE} -c $WPA_CONF $WPA_OPTS
sleep 1
if [[ ! -f /var/run/wpa_supplicant_${INTERFACE}.pid ]]; then
err_append "wpa_supplicant did not start, possible configuration error"
return 1
fi
}
wireless-custom_up() {
load_profile $1
if [[ ! -d /sys/class/net/$INTERFACE/wireless ]]; then
err_append "Interface $INTERFACE is not a wireless interface"
return 1
fi
# Required by atheros and others (mac80211?) to enable device
ifconfig $INTERFACE up
# Hack that has been required by some broadcom
quirk "prescan" && iwlist $INTERFACE scan &> /dev/null
quirk "test" && echo "TESTWORKS!"
# Required by ipw3945 to properly re-associate
quirk "preessid" && eval "iwconfig $INTERFACE mode managed essid \"$ESSID\""
# Kill any lingering wpa_supplicants.
if [[ -f /var/run/wpa_supplicant_$INTERFACE.pid ]]; then
kill $(cat /var/run/wpa_supplicant_$INTERFACE.pid)
fi
# Default scan off as it won't see hidden networks and some hardware's scanning is dodgy
[[ ! "$SCAN" ]] && SCAN="no"
if checkyesno $SCAN; then
if ! find_essid $INTERFACE "$ESSID"; then
err_append "Network unavailable"
return 1
fi
fi
# Manually set iwconfig options
if [[ "$IWCONFIG" ]]; then
iwconfig $INTERFACE $IWCONFIG
fi
case $SECURITY in
wep|none)
# 'none' security uses iwconfig, like wep, so use same code, minus keysetting.
# Use sane default if no alternative is specified
if [[ "$SECURITY" = "wep" && "$WEP_OPTS" = "" ]]; then
WEP_OPTS="mode managed essid \"$ESSID\" key open $KEY"
elif [[ "$SECURITY" = "none" && "$WEP_OPTS" = "" ]]; then
WEP_OPTS="mode managed essid \"$ESSID\""
fi
# Add wierd quirk for some Atheros in response to FS#10585
quirk "predown" && ifconfig $INTERFACE down
if ! eval iwconfig $INTERFACE $WEP_OPTS; then
err_append "Could not set wireless configuration"
return 1
fi
quirk "postsleep" && sleep 1
quirk "postscan" && sleep 1 && iwlist $INTERFACE scan &>/dev/null
quirk "predown" && ifconfig $INTERFACE up
wep_check $INTERFACE $TIMEOUT|| return 1
;;
wpa)
local WPA_TMPCONF=`mktemp /tmp/wpa.XXXXXXXX`
# Quirk for broken drivers... http://bbs.archlinux.org/viewtopic.php?id=36384
quirk "wpaessid" && eval iwconfig $INTERFACE mode managed essid "\"$ESSID\""
# Create a random file to store configuration, make it root only.
chmod 600 $WPA_TMPCONF
echo "ctrl_interface=/var/run/wpa_supplicant" >> $WPA_TMPCONF
echo "ctrl_interface_group=0" >> $WPA_TMPCONF
# Generate configuration
if [[ "${#KEY}" == "64" ]]; then
echo -e 'network={ \nssid="$ESSID" \npsk=$KEY \n}'> $WPA_TMPCONF
elif ! wpa_passphrase "$ESSID" "$KEY" >> $WPA_TMPCONF; then
err_append "Configuration generation failed: `cat $WPA_TMPCONF`"
return 1
fi
# Connect!
if ! start_wpa $INTERFACE $WPA_TMPCONF $WPA_OPTS ; then
rm $WPA_TMPCONF
return 1
fi
rm $WPA_TMPCONF
wpa_check $INTERFACE $TIMEOUT || return 1
;;
wpa-config)
# If user hasnt defined one, use stock config.
[[ -z "$WPA_CONF" ]] && WPA_CONF="/etc/wpa_supplicant.conf"
start_wpa $INTERFACE $WPA_CONF $WPA_OPTS || return 1
wpa_check $INTERFACE $TIMEOUT || return 1
;;
wpa-custom)
#Create temporary config file
local WPA_TMPCONF=`mktemp /tmp/wpa.XXXXXXXX`
# Quirk for broken drivers... http://bbs.archlinux.org/viewtopic.php?id=36384
quirk "wpaessid" && eval iwconfig $INTERFACE mode managed essid "\"$ESSID\""
# Create a random file to store configuration, make it root only.
chmod 600 $WPA_TMPCONF
# Copy base config file
[[ -z "$WPA_CONF" ]] || cat $WPA_CONF >> $WPA_TMPCONF
# Add custom settings
echo "$WPA_CUSTOM" >> $WPA_TMPCONF
# Connect!
if ! start_wpa $INTERFACE $WPA_TMPCONF $WPA_OPTS ; then
rm $WPA_TMPCONF
return 1
fi
rm $WPA_TMPCONF
wpa_check $INTERFACE $TIMEOUT || return 1
;;
esac
. $SUBR_DIR/ethernet.subr
if ! ethernet_up $1; then
wireless-custom_down $1 YES
return 1
fi
}
wireless-custom_down() {
PROFILE=$1 NOETHERNETDOWN=$2
if ! checkyesno $2; then
. $SUBR_DIR/ethernet.subr
ethernet_down $1
fi
wpa_cli terminate &> /dev/null
iwconfig $INTERFACE essid off key off &> /dev/null
#ifconfig $INTERFACE down
}
wireless-custom_clean_scope() {
unset INTERFACE CONNECTION
unset TIMEOUT WPA_CONF WPA_OPTS KEY ESSID SECURITY WEP_OPTS WPA_TMPCONF WPA_CUSTOM
. $SUBR_DIR/ethernet.subr
ethernet_clean_scope
}
# vim: set ts=4 et sw=4:Enjoy. Any criticism welcome.
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