diff options
Diffstat (limited to 'rc.wireless')
| -rw-r--r-- | rc.wireless | 342 |
1 files changed, 342 insertions, 0 deletions
diff --git a/rc.wireless b/rc.wireless new file mode 100644 index 0000000..51623d5 --- /dev/null +++ b/rc.wireless @@ -0,0 +1,342 @@ +#!/bin/sh +# /etc/rc.d/rc.wireless +# $Id: rc.wireless,v 1.13 2007/04/13 14:14:43 eha Exp eha $ +# +# Wireless network card setup. +# +# This script sets up PCI, USB, and 32-bit Cardbus wireless devices +# NOT 16-bit PCMCIA cards! Those are configured in /etc/pcmcia/. +# Single parameter to this script is the name of a network interface. +# Normally this script is called from rc.inet1 rather than run +# directly. +# +# This script is a modified '/etc/pcmcia/wireless' script +# 09/apr/2004 by Eric Hameleers +# 16/sep/2004 * Eric Hameleers * Fixed iwspy and iwpriv commands +# 08/apr/2005 * Eric Hameleers * Allow per-interface overrides of the wireless +# parameters (see /etc/rc.d/rc.inet1.conf) +# 11/apr/2005 * Eric Hameleers * Tune wpa_supplicant interactions. +# 23/apr/2005 * Eric Hameleers * First configure card with iwconfig, +# before starting wpa_supplicant +# 27/apr/2005 * Eric Hameleers * Multiple 'iwpriv $INTERFACE set' commands. +# 14/feb/2006 * Eric Hameleers * Better error messages; alternative way of +# getting HWADDR; parametrized WPA_WAIT value. +# Don't kill an already running wpa_supplicant. +# 29/apr/2006 * Pat Volkerding * Reverted HWADDR change, since it relies on +# a binary (macaddr) that is not built or +# installed by default since it is not +# compatible with all interfaces. +# 15/aug/2006 * Eric Hameleers * Added missing "" around $ESSID, which broke +# ESSIDs that contain a space character. +# 10/oct/2006 * Eric Hameleers * Added default empty values for all parameters. +# This makes a second wireless card leave +# wpa_supplicant alone if WPA is not configured. +# 15/oct/2006 * Eric Hameleers * Swapped the calls to "key <key>" and +# "key restricted" since that might be needed +# for WEP to work reliably. +# 09/jan/2007 * Eric Hameleers * Add explicit default values to wireless params; +# also set the ESSID before IWPRIV commands, +# needed for some RaLink cards; +# use /proc/net/wireless instead of calling +# iwconfig to determine if a card is wireless. +# 13/apr/2007 * Eric Hameleers * Use of the IWPRIV variable was broken. +# NOTE: if you need to enter multiple parameters +# in IWPRIV, you must separate them with the pipe +# (|) character - this used to be a space char! +# See the example in rc.inet1.conf. +# 16/apr/2008 * Pat Volkerding * Make sure that HWADDR is all upper case. +# 23/apr/2008 * Pat Volkerding * Increase sleep time after bringing up an +# interface to 3 seconds. Some drivers +# need this additional time to initalize. +# 02/jan/2010 * Pat Volkerding * Look for /sys/class/net/$NETDEV/wireless rather +# than the contents of /proc/net/wireless to find +# if a network device is wireless. In newer +# kernels devices will not show up in +# /proc/net/wireless until active. +# 16/aug/2012 * Pat Volkerding * Use several tests to determine if an interface +# is wireless, as the reliability of any given +# test may depend on the kernel options and the +# wireless driver used. +# Convert the MAC address to uppercase in sed. +# ------------------------------------------------------------------------------ + +LOGGER=${LOGGER:-cat} + +if [ -z $IFNAME ] ; then + echo "WARNING: The script 'rc.wireless' must be executed by 'rc.inet1'!" | $LOGGER + echo " You should run the command \"/etc/rc.d/rc.inet1 <your_interface>_start\" yourself." | $LOGGER + return 1 2> /dev/null || exit 1 +fi + +INTERFACE=$1 + +# Find the path where wireless tools are installed +for IWPATH in /usr/{bin,sbin} /usr/local/{bin,sbin} /sbin /bin ; do + if [ -x $IWPATH/iwconfig ] ; then break ; fi +done + +# The same for wpa_supplicant (needed for WPA support) +for SUPPATH in /usr/{bin,sbin} /usr/local/{bin,sbin} /sbin /bin ; do + if [ -x $SUPPATH/wpa_supplicant ] ; then break ; fi +done + +# Set all desired settings through the wireless tools +IWCOMMAND="$IWPATH/iwconfig ${INTERFACE}" +IWPRIVCMD="$IWPATH/iwpriv ${INTERFACE}" +IWSPYCMD="$IWPATH/iwspy ${INTERFACE}" +IFCOMMAND="/sbin/ifconfig ${INTERFACE}" + +is_wireless_device () +{ + # Return 0 for a wireless interface, or 1 for a non-wireless interface. + if LC_ALL=C $IWPATH/iwconfig $1 2>&1 | grep -q "IEEE 802.11" ; then + return 0 + elif [ -d /sys/class/net/${1}/wireless ]; then + return 0 + elif [ "$(cat /sys/class/net/${1}/uevent | grep DEVTYPE)" = "DEVTYPE=wlan" ]; then + return 0 + else # all tests failed, assume the device is not wireless (or add a better test :) + return 1 + fi +} + +############### +# EXIT POINTS # +############### + +# Is the device wireless? If not, exit this script. +is_wireless_device ${INTERFACE} || return 0 2> /dev/null || exit 0 + +# If we stop a wireless interface using wpa_supplicant, +# we'll kill its wpa_supplicant daemon too and exit this script: +if [ "$2" = "stop" ]; then + WPAPID=$(echo $(ps axww | grep wpa_supplicant | grep i${INTERFACE}) | cut -f1 -d' ') + [ ${WPAPID} ] && kill ${WPAPID} + return 0 +fi + +# ----------------------------------------------------- +# Continue with the script - bringing the interface UP. +# ----------------------------------------------------- + +# Bring interface up - for determining the HWADDR +$IFCOMMAND up +sleep 3 + +# Get the MAC address for the interface +HWADDR=$(/sbin/ifconfig ${INTERFACE} | sed -ne 's/.*\(..:..:..:..:..:..\).*/\U\1/p') + +# Empty all wireless parameters- some of them could still be set for a previous interface: +# when rc.inet1 is sourced from rc.M all scripts are run in the same shell. +CHANNEL="" +ESSID="" +FREQ="" +FRAG="" +IWCONFIG="" +IWPRIV="" +IWSPY="" +KEY="" +MODE="" +NICKNAME="" +NWID="" +RATE="" +RTS="" +SENS="" +WPA="" +WPADRIVER="" +WPACONF="" +WPAWAIT="" +# Read the configuration information for the card with address $HWADDR +# from /etc/rc.d/rc.wireless.conf: +[[ -r /etc/rc.d/rc.wireless.conf ]] && . /etc/rc.d/rc.wireless.conf + +# Let any per-interface overrides (the WLAN_xxxx parameters) that are set +# in /etc/rc.d/rc.inet1.conf have precedence. +# The reason: you might have multiple wireless cards of the same brand, or +# connecting to multiple networks. +# Position 'i' of this interface in the IFNAME array was determined in rc.inet1 +CHANNEL=${WLAN_CHANNEL[$i]:-${CHANNEL}} +ESSID=${WLAN_ESSID[$i]:-${ESSID}} +FREQ=${WLAN_FREQ[$i]:-${FREQ}} +FRAG=${WLAN_FRAG[$i]:-${FRAG}} +IWCONFIG=${WLAN_IWCONFIG[$i]:-${IWCONFIG}} +IWPRIV=${WLAN_IWPRIV[$i]:-${IWPRIV}} +IWSPY=${WLAN_IWSPY[$i]:-${IWSPY}} +KEY=${WLAN_KEY[$i]:-${KEY}} +MODE=${WLAN_MODE[$i]:-${MODE}} +NICKNAME=${WLAN_NICKNAME[$i]:-${NICKNAME}} +NWID=${WLAN_NWID[$i]:-${NWID}} +RATE=${WLAN_RATE[$i]:-${RATE}} +RTS=${WLAN_RTS[$i]:-${RTS}} +SENS=${WLAN_SENS[$i]:-${SENS}} +WPA=${WLAN_WPA[$i]:-${WPA}} +# The "ext" interface will be default if not explicitly set +WPADRIVER=${WLAN_WPADRIVER[$i]:-${WPADRIVER:="wext"}} +# The default config file as installed by the wpa_supplicant package: +WPACONF=${WLAN_WPACONF[$i]:-${WPACONF:="/etc/wpa_supplicant.conf"}} +WPAWAIT=${WLAN_WPAWAIT[$i]:-${WPAWAIT:="60"}} + + +[ -n "$VERBOSE" -a -n "$INFO" ] && echo "$0: $1 information: '$INFO'" + +################### +# WIRELESS CONFIG # +################### + +# Mode needs to be first : some settings apply only in a specific mode! +if [ -n "$MODE" ] ; then + echo "$0: $IWCOMMAND mode $MODE" | $LOGGER + # if $IWCOMMAND fails, try taking the interface down to run it. + # Some drivers require this. + if ! $IWCOMMAND mode $MODE 2> /dev/null ; then + $IFCOMMAND down + $IWCOMMAND mode $MODE + $IFCOMMAND up + sleep 3 + fi +fi +# This is a bit hackish, but should do the job right... +if [ ! -n "$NICKNAME" ] ; then + NICKNAME=$(/bin/hostname) +fi +if [ -n "$ESSID" -o -n "$MODE" ] ; then + echo "$0: $IWCOMMAND nick $NICKNAME" | $LOGGER + $IWCOMMAND nick $NICKNAME +fi +# Regular stuff... +if [ -n "$NWID" ] ; then + echo "$0: $IWCOMMAND nwid $NWID" | $LOGGER + $IWCOMMAND nwid $NWID +fi +if [ -n "$FREQ" ] ; then + echo "$0: $IWCOMMAND freq $FREQ" | $LOGGER + $IWCOMMAND freq $FREQ +elif [ -n "$CHANNEL" ] ; then + echo "$0: $IWCOMMAND channel $CHANNEL" | $LOGGER + $IWCOMMAND channel $CHANNEL +fi + +# WEP keys (non-WPA) +if [ -n "$KEY" -a ! -n "$WPA" ] ; then + if [ "$KEY" = "off" ]; then + echo "$0: $IWCOMMAND key open" | $LOGGER + $IWCOMMAND key open + echo "$0: $IWCOMMAND key off" | $LOGGER + $IWCOMMAND key off + else + echo "$0: $IWCOMMAND key ************" | $LOGGER + $IWCOMMAND key $KEY + if ! echo "$KEY" | egrep -qw "restricted|open" ; then + # Set "restricted" as the default security mode: + echo "$0: $IWCOMMAND key restricted" | $LOGGER + $IWCOMMAND key restricted + fi + fi +fi +if [ -n "$SENS" ] ; then + echo "$0: $IWCOMMAND sens $SENS" | $LOGGER + $IWCOMMAND sens $SENS +fi +if [ -n "$RATE" ] ; then + echo "$0: $IWCOMMAND rate $RATE" | $LOGGER + $IWCOMMAND rate $RATE +fi +if [ -n "$RTS" ] ; then + echo "$0: $IWCOMMAND rts $RTS" | $LOGGER + $IWCOMMAND rts $RTS +fi +if [ -n "$FRAG" ] ; then + echo "$0: $IWCOMMAND frag $FRAG" | $LOGGER + $IWCOMMAND frag $FRAG +fi +# More specific parameters +if [ -n "$IWCONFIG" ] ; then + echo "$0: $IWCOMMAND $IWCONFIG" | $LOGGER + $IWCOMMAND $IWCONFIG +fi +if [ -n "$IWSPY" ] ; then + echo "$0: $IWSPYCMD $IWSPY" | $LOGGER + $IWSPYCMD $IWSPY +fi +# For RaLink cards, the SSID must be set right before configuring WPAPSK/TKIP parameters +# using iwpriv commands in order to generate the wpapsk password. This should not hurt other cards: +if [ -n "$ESSID" ] ; then + echo "$0: $IWCOMMAND essid \"$ESSID\"" | $LOGGER + $IWCOMMAND essid "$ESSID" +fi +# The iwpriv can set one private IOCTL at the time, so if the $IWPRIV +# variable contains multiple pipe ('|') separated settings, we split them here: +# WARNING: if your iwpriv commands contain a WEP/WPA key, these can be logged +# in /var/log/messages! +if [ -n "$IWPRIV" ] ; then + echo "${IWPRIV}|" | \ + while read -d '|' iwi; do + if [ -n "$iwi" ]; then + echo "$0: '$IWPRIVCMD $iwi'" | $LOGGER + $IWPRIVCMD $iwi + fi + done +fi + +################## +# WPA_SUPPLICANT # +################## + +# Support for WPA (wireless protected access) is provided by wpa_supplicant +# for those drivers that support it (and it looks like wpa_supplicant is +# the future for WPA support in Linux anyway) +if [ "$WPA" = "wpa_supplicant" ] || [ "$WPA" = "wpaxsupplicant" ] && [ -x ${SUPPATH}/wpa_supplicant ]; then + # Interface down, so wpa_supplicant can associate with the AP + $IFCOMMAND down + #WPACONF=${WPACONF:-/etc/wpa_supplicant.conf} + WPA_OPTIONS="" + [ ${WPADRIVER} ] && WPA_OPTIONS="-D${WPADRIVER}" # specify the driver + [ ${WPA} = "wpaxsupplicant" ] && WPA_OPTIONS="${WPA_OPTIONS} -e" # Use external xsupplicant (disables the internal supplicant) + + # We leave a running wpa_supplicant process in peace: + WPAPID=$(echo $(ps axww | grep wpa_supplicant | grep i${INTERFACE}) | cut -f1 -d' ') + if [ ${WPAPID} ]; then + echo "$0: wpa_supplicant found running already" | $LOGGER + else + echo "$0: wpa_supplicant -B -c${WPACONF} ${WPA_OPTIONS} -i$INTERFACE" | $LOGGER + ${SUPPATH}/wpa_supplicant -B -c${WPACONF} ${WPA_OPTIONS} -i$INTERFACE + fi + + # Buy wpa_supplicant some time to authenticate before bringing the + # interface back up... but we don't wait forever: + # You can increase this value in rc.inet1.conf (WLAN_WPAWAIT) or rc.wireless.conf (WPAWAIT) + # if your card takes longer to associate: + WPAWAIT=${WPAWAIT:-10} + wi=0 + while [ $wi -lt $WPAWAIT ]; do + wi=$(($wi+1)); sleep 1 + if (grep -q "^ctrl_interface=" ${WPACONF}); then + if (LC_ALL=C ${SUPPATH}/wpa_cli -i$INTERFACE status | grep -q "^wpa_state=COMPLETED"); then break; fi + else + if (LC_ALL=C ${IWCOMMAND} | grep -Eq "Encryption key:....-"); then break; fi + fi + done + if [ $wi -eq $WPAWAIT ]; then + echo "WPA authentication did not complete, try running '/etc/rc.d/rc.inet1 ${INTERFACE}_start' in a few seconds." | $LOGGER + fi + # Bring interface up to avoid 'not ready' errors when calling iwconfig + $IFCOMMAND up + sleep 3 + +else + + # ESSID need to be last: most devices re-perform the scanning/discovery + # when this is set, and things like encryption keys had better be + # defined if we want to discover the right set of APs/nodes. + # NOTE: when automatic association does not work, but you manage to get + # an IP address by manually setting the ESSID and then calling dhcpcd, + # then the cause might be the incorrect definition of your ESSID="bla" + # parameter in rc.wireless.conf. + # Debug your wireless problems by running 'iwevent' while the card + # is being configured. + if [ -n "$ESSID" ] ; then + echo "$0: $IWCOMMAND essid \"$ESSID\"" | $LOGGER + $IWCOMMAND essid "$ESSID" + fi + +fi |