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#!/bin/bash
# Need bash because we use ${.../...}
#
# test-wireless-ap
#
# Usage:
# test-wireless-ap [--timeout=TIMEOUT] IFACE [AP_MAC_ADDRESS] [IWCONFIG_ARG]...
#
# This tests whether the wireless card can associate to an access
# point using the given iwconfig argument pairs
# essid ESSID
# key 123456
# and so on.
#
# Licensed under the GNU GPL. See /usr/share/common-licenses/GPL.
#
# History
# May 2005: Bugs fixed by Christoph Biedl and Thomas Hood
# Nov 2003: Modified by Thomas Hood and Klaus Wacker
# July 2003: Modified by Thomas Hood to support Aironet cards
# June 2003: Modified by John Fettig <jfettig@uiuc.edu>
# Jan 2003: Derived from testssid by Andrew McMillan <awm@debian.org>
# Written by Thomas Hood <jdthood@yahoo.co.uk>
set -o errexit # -e
set -o noglob # -f
MYNAME="$(basename $0)"
PATH=/sbin:/bin
ESSID=""
MAC_ADDRESS=""
report_err() { echo "${MYNAME}: Error: $*" >&2 ; }
do_sleep() { LANG=C sleep "$@" ; }
is_ethernet_mac()
{
[ "$1" ] && [ ! "${1/[0-9A-F][0-9A-F]:[0-9A-F][0-9A-F]:[0-9A-F][0-9A-F]:[0-9A-F][0-9A-F]:[0-9A-F][0-9A-F]:[0-9A-F][0-9A-F]/}" ]
}
# Set ESSID to string following 'essid' in the array of function arguments
extract_ESSID()
{
while [ "$1" ] ; do
[ "$1" = "essid" ] && { ESSID="$2" ; return 0 ; }
shift
done
}
TIMEOUT=3
case "$1" in
--timeout) TIMEOUT="$2" ; shift 2 ;;
--timeout=*) TIMEOUT="${1#--timeout=}" ; shift ;;
esac
IFACE="$1"
shift
[ "$IFACE" ] || { report_err "Interface not specified. Exiting." ; exit 1 ; }
if is_ethernet_mac "$1" ; then
MAC_ADDRESS="$1"
shift
fi
extract_ESSID "$@"
[ "$1" ] && iwconfig "$IFACE" "$@"
ifconfig "$IFACE" up
for (( TIMELEFT="$TIMEOUT" ; TIMELEFT > 0 ; TIMELEFT-- )) ; do
FAILED=0
if [ "$ESSID" ] ; then
# Check that interface ESSID is what we are looking for
ACTUAL_ESSID="$(iwgetid $IFACE)"
ACTUAL_ESSID="${ACTUAL_ESSID#*ESSID:}"
ACTUAL_ESSID="${ACTUAL_ESSID# }"
ACTUAL_ESSID="${ACTUAL_ESSID#\"}"
ACTUAL_ESSID="${ACTUAL_ESSID%\"}"
[ "$ACTUAL_ESSID" = "$ESSID" ] || FAILED=1
fi
if [ "$FAILED" = 0 ] && [ "$MAC_ADDRESS" ] ; then
# Check that access point MAC address is what we are looking for
ACTUAL_MAC_ADDRESS="$(iwgetid $IFACE --ap --scheme)"
case "$ACTUAL_MAC_ADDRESS" in
"FF:FF:FF:FF:FF:FF"|"ff:ff:ff:ff:ff:ff"|"44:44:44:44:44:44"|"00:00:00:00:00:00")
ACTUAL_MAC_ADDRESS=""
;;
esac
[ "$ACTUAL_MAC_ADDRESS" = "$MAC_ADDRESS" ] || FAILED=1
fi
if [ "$FAILED" = 0 ] ; then
ifconfig "$IFACE" down
exit 0
fi
do_sleep 1
done
# Out of time
ifconfig "$IFACE" down
exit 1
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