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|
# Copyright (c) 2004-2006 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# Contributed by Roy Marples (uberlord@gentoo.org)
# Many thanks to all the people in the Gentoo forums for their ideas and
# motivation for me to make this and keep on improving it
# Fix any potential localisation problems
# Note that LC_ALL trumps LC_anything_else according to locale(7)
iwconfig() {
LC_ALL=C /sbin/iwconfig "$@"
}
iwgetid() {
LC_ALL=C /sbin/iwgetid "$@"
}
iwlist() {
LC_ALL=C /sbin/iwlist "$@"
}
iwpriv() {
LC_ALL=C /sbin/iwpriv "$@"
}
# void iwconfig_depend(void)
#
# Sets up the dependancies for the module
iwconfig_depend() {
after plug
before interface
provide wireless
functions interface_up interface_down interface_exists
}
# void iwconfig_expose(void)
#
# Expose variables that can be configured
iwconfig_expose() {
variables essid mode associate_timeout sleep_scan preferred_aps blacklist_aps
}
# bool iwconfig_check_installed(void)
#
# Returns 1 if wireless-tools is installed, otherwise 0
iwconfig_check_installed() {
local report=${1:-false}
[[ -x /sbin/iwconfig ]] && return 0
${report} && eerror "For Wireless (802.11) support, emerge net-wireless/wireless-tools"
if [[ ! -e /proc/net/wireless ]]; then
installed="1"
if ${report} ; then
eerror "iwconfig requires wireless support"
eerror "(CONFIG_NET_WIRELESS=y) enabled in the kernel"
fi
fi
return 1
}
# bool iwconfig_exists(char *interface)
#
# Checks to see if wireless extensions are enabled on the interface
iwconfig_exists() {
[[ ! -e /proc/net/wireless ]] && return 1
grep -q "^[ \t]*$1:[ \t]" /proc/net/wireless
}
# char* iwconfig_get_wep_status(char *interface)
#
# Echos a string showing whether WEP is enabled or disabled
# for the given interface
iwconfig_get_wep_status() {
local key="$( iwconfig "$1" | grep -i -o "Encryption key:[0-9,A-F]" )"
local mode status="disabled"
if [[ -n ${key} ]]; then
status="enabled"
mode="$( iwconfig "$1" | sed -n -e 's/^.*Security mode:\(.*[^ ]\).*/\1/p' )"
[[ -n ${mode} ]] && mode=" - ${mode}"
fi
echo "(WEP ${status}${mode})"
}
# char* iwconfig_get_essid(char *iface)
#
# Gets the current ESSID of the iface
iwconfig_get_essid() {
local i essid
for (( i=0; i<5; i++ )); do
essid="$( iwgetid --raw "$1" )"
if [[ -n ${essid} ]] ; then
echo "${essid}"
return 0
fi
sleep 1
done
return 1
}
# char* iwconfig_get_ap_mac_address(char *interface)
#
# Returns the MAC address of the Access Point
# the interface is connected to
iwconfig_get_ap_mac_address() {
iwgetid --raw --ap "$1"
}
# char* iwconfig_get_mode(char *interface)
#
# Returns the wireless mode in lower case
iwconfig_get_mode() {
iwgetid --mode "$1" | sed -n -e 's/^.*Mode:\(.*\)/\L\1/p'
}
# char* iwconfig_get_type(char *interface)
#
# Returns the type of interface - the IEEE part
iwconfig_get_type() {
iwconfig "$1" | sed -n -e 's/^'"$1"' *\([^ ]* [^ ]*\).*/\1/p'
}
# void iwconfig_report(char *interface)
#
# Output how our wireless interface has been configured
iwconfig_report() {
local iface="$1" essid mac m="connected to"
essid="$( iwconfig_get_essid "${iface}" )"
local wep_status="$( iwconfig_get_wep_status "${iface}" )"
local channel="$( iwgetid --raw --channel "${iface}" )"
[[ -n ${channel} ]] && channel="on channel ${channel} "
essid="${essid//\\\\/\\\\}"
local mode="$( iwconfig_get_mode "${iface}" )"
if [[ ${mode} == "master" ]]; then
m="configured as"
else
mac="$( iwconfig_get_ap_mac_address "${iface}" )"
[[ -n ${mac} ]] && mac=" at ${mac}"
fi
eindent
einfo "${iface} ${m} ESSID \"${essid}\"${mac}"
einfo "in ${mode} mode ${channel}${wep_status}"
eoutdent
}
# char* iwconfig_get_wep_key(char *mac_address)
#
# Returns the configured WEP key for the given mac address
# or the given ESSID. The mac address setting takes precendence
iwconfig_get_wep_key() {
local mac="$1" key
key="mac_key_${mac//:/}"
[[ -z ${!key} ]] && key="key_${ESSIDVAR}"
echo "${!key:-off}"
}
# void iwconfig_user_config(char *iface, char *ifvar)
#
# Applies the user configuration to the interface
iwconfig_user_config() {
local iface="$1" conf aconf ifvar="$2"
[[ -z ${ifvar} ]] && ifvar="$( bash_variable "$1" )"
# Apply the user configuration
conf="iwconfig_${ifvar}"
if [[ -n ${!conf} ]]; then
aconf=( "${!conf}" )
for conf in "${aconf[@]}" ; do
if ! eval iwconfig "${iface}" "${conf}" ; then
ewarn "${iface} does not support the following configuration commands"
ewarn " ${conf}"
fi
done
fi
conf="iwpriv_${ifvar}[@]"
if [[ -n ${!conf} ]]; then
aconf=( "${!conf}" )
for conf in "${aconf[@]}" ; do
if ! eval iwpriv "${iface}" "${conf}" ; then
ewarn "${iface} does not support the following private ioctls"
ewarn " ${conf}"
fi
done
fi
}
# bool iwconfig_setup_specific(char *iface)
#
# Sets up our wireless interface to operate in ad-hoc or master mode
iwconfig_setup_specific() {
local iface="$1" mode="$2" channel key dessid
local ifvar="$( bash_variable "$1" )"
if [[ -z ${ESSID} ]]; then
eerror "${iface} requires an ESSID to be set to operate in ${mode} mode"
eerror "adjust the essid_${iface} setting in /etc/conf.d/wireless"
return 1
fi
dessid="${ESSID//\\\\/\\\\}"
ESSIDVAR="$( bash_variable "${ESSID}" )"
key="$( iwconfig_get_wep_key )"
# We only change the mode if it's not the same
local cur_mode="$( iwconfig_get_mode "${iface}" )"
if [[ ${cur_mode} != "${mode}" ]]; then
if ! iwconfig "${iface}" mode "${mode}" ; then
eerror "${iface} does not support setting the mode to \"${mode}\""
return 1
fi
fi
channel="channel_${ifvar}"
# We default the channel to 3
channel="${!channel:-3}"
if ! iwconfig "${iface}" channel "${channel}" ; then
ewarn "${iface} does not support setting the channel to \"${channel}\""
return 1
fi
# Now set the key
if ! iwconfig "${iface}" key ${key} ; then
if [[ ${key} != "off" ]]; then
ewarn "${iface} does not support setting keys"
ewarn "or the parameter \"mac_key_${ESSIDVAR}\" or \"key_${ESSIDVAR}\" is incorrect"
fi
fi
# Then set the ESSID
if ! iwconfig "${iface}" essid "${ESSID}" ; then
eerror "${iface} does not support setting ESSID to \"${dessid}\""
return 1
fi
# Finally apply the user Config
iwconfig_user_config "${iface}" "${ESSIDVAR}"
iwconfig_report "${iface}"
return 0
}
# bool iwconfig_associate_mac(char *iface)
#
# Returns true if the AP MAC address is valid or not
iwconfig_associate_mac() {
# Checks if a MAC address has been assigned
local mac="$( iwconfig_get_ap_mac_address "$1" )" i
local -a invalid_macs=(
"00:00:00:00:00:00"
"44:44:44:44:44:44"
"FF:00:00:00:00:00"
"FF:FF:FF:FF:FF:FF"
)
[[ -z ${mac} ]] && return 1
for i in "${invalid_macs[@]}"; do
[[ ${mac} == "${i}" ]] && return 1
done
return 0
}
# bool iwconfig_associate_quality(char *iface)
#
# Returns true if the link quality is not 0 or 0.
iwconfig_associate_quality() {
local quality="$( \
sed -n -e 's/^.*'"$1"': *[0-9]* *\([0-9]*\).*/\1/p' \
/proc/net/wireless
)"
[[ ${quality} != "0" ]]
return "$?"
}
# bool iwconfig_test_associated(char *iface)
#
# Returns true if the interface has associated with an Access Point
iwconfig_test_associated() {
local iface="$1" ttype ifvar="$( bash_variable "$1" )" x
# Some drivers don't set MAC to a bogus value when assocation is lost/fails
# whereas they do set link quality to 0
x="associate_test_${ifvar}"
ttype="$( echo "${!x:-mac}" | tr '[:upper:]' '[:lower:]' )"
if [[ ${ttype} != "mac" && ${ttype} != "quality" && ${ttype} != "all" ]]; then
ewarn " associate_test_${iface} is not set to mac, quality or all"
ewarn " defaulting to \"mac\""
test="mac"
fi
case "${ttype}" in
mac) iwconfig_associate_mac "${iface}" && return 0 ;;
quality) iwconfig_associate_quality "${iface}" && return 0 ;;
all) iwconfig_associate_mac "${iface}" \
&& iwconfig_associate_quality "${iface}" && return 0 ;;
esac
return 1
}
# bool iwconfig_wait_for_association(char *iface)
#
# Waits for a configured ammount of time until
# we are assocaited with an Access Point
iwconfig_wait_for_association() {
local iface="$1" i=0 timeout ifvar="$( bash_variable "$1" )"
timeout="associate_timeout_${ifvar}"
[[ -z ${!timeout} ]] && timeout="sleep_associate_${ifvar}"
timeout="${!timeout:-10}"
[[ ${timeout} == "0" ]] \
&& vewarn "WARNING: infinite timeout set for association on ${iface}"
while true; do
iwconfig_test_associated "${iface}" && return 0
sleep 1
[[ ${timeout} == "0" ]] && continue
(( i++ ))
[[ ${i} == "${timeout}" || ${i} -gt ${timeout} ]] && break
done
return 1
}
# bool iwconfig_associate(char *interface, char *mac_address, char *wep_required)
#
# Tries to associate the interface with an Access Point
# If we scanned the Access Point we know if we need WEP to associate or not
# and if we have a WEP key for the ESSID or not
# so we can fail gracefully without even trying to connect
iwconfig_associate() {
local iface="$1" mode="${2:-managed}"
local mac="$3" wep_required="$4" w="(WEP Disabled)"
local dessid="${ESSID//\\\\/\\\\}" key
if ! iwconfig "${iface}" mode "${mode}" ; then
eerror "Unable to change mode to ${mode}"
return 1
fi
if [[ ${ESSID} == "any" ]]; then
iwconfig "${iface}" ap any 2>/dev/null
dessid="any"
unset ESSIDVAR
else
ESSIDVAR="$( bash_variable "${ESSID}" )"
key="$( iwconfig_get_wep_key "${mac}" )"
if [[ ${wep_required} == "on" && ${key} == "off" ]]; then
eerror "WEP key is not set for \"${dessid}\" - not connecting"
return 1
fi
if [[ ${wep_required} == "off" && ${key} != "off" ]]; then
key="off"
ewarn "\"${dessid}\" is not WEP enabled - ignoring setting"
fi
if ! iwconfig "${iface}" key ${key} ; then
if [[ ${key} != "off" ]]; then
ewarn "${iface} does not support setting keys"
ewarn "or the parameter \"mac_key_${ESSIDVAR}\" or \"key_${ESSIDVAR}\" is incorrect"
return 1
fi
fi
[[ ${key} != "off" ]] && w="$( iwconfig_get_wep_status "${iface}" )"
fi
if ! iwconfig "${iface}" essid "${ESSID}" ; then
if [[ ${ESSID} != "any" ]]; then
ewarn "${iface} does not support setting ESSID to \"${dessid}\""
fi
fi
# Finally apply the user Config
iwconfig_user_config "${iface}" "${ESSIDVAR}"
vebegin "Connecting to \"${dessid}\" in ${mode} mode ${w}"
if [[ ${ESSID} != "any" ]] && is_function preassociate ; then
veinfo "Running preassociate function"
eindent
( preassociate "${iface}" )
e="$?"
eoutdent
if [[ ${e} != 0 ]]; then
veend 1 "preassociate \"${dessid}\" on ${iface} failed"
return 1
fi
fi
if ! iwconfig_wait_for_association "${iface}" ; then
veend 1
return 1
fi
veend 0
if [[ ${ESSID} == "any" ]]; then
ESSID="$( iwconfig_get_essid "${iface}" )"
iwconfig_associate "${iface}"
return $?
fi
iwconfig_report "${iface}"
if is_function postassociate ; then
veinfo "Running postassociate function"
eindent
( postassociate "${iface}" )
eoutdent
fi
return 0
}
# bool iwconfig_scan(char *iface)
#
# Fills 3 arrays with information from a wireless scan
iwconfig_scan() {
local iface="$1" mode x ifvar="$( bash_variable "$1" )"
# First, we may need to change mode to scan in
x="scan_mode_${ifvar}"
mode="$( echo "${!x}" | tr '[:upper:]' '[:lower:]' )"
if [[ -n ${mode} ]]; then
if ! iwconfig "${iface}" mode "${mode}" ; then
ewarn "${iface} does not support setting the mode to \"${mode}\""
fi
fi
# Next we set any private driver ioctls needed
x="iwpriv_scan_pre_${ifvar}"
if [[ -n ${!x} ]]; then
if ! eval iwpriv "${iface}" "${!x}" ; then
ewarn "${iface} does not support the following private ioctls" \
ewarn " ${!x}"
fi
fi
# Set the essid to any. This is required for scanning
iwconfig "${iface}" essid any
veinfo "Scanning for access points"
# Sleep if required
x="sleep_scan_${ifvar}"
[[ -z ${!x} || ${!x} -gt 0 ]] && sleep "${!x:-1}"
local error=true i=-1 line
local -a mac essid enc qual mode
while read line; do
error=false
case "${line}" in
*Address:*)
(( i++ ))
mac[i]="$( echo "${line#*: }" | tr '[:lower:]' '[:upper:]' )"
;;
*ESSID:*)
essid[i]="${line#*\"}"
essid[i]="${essid[i]%*\"}"
;;
*Mode:*)
mode[i]="$(echo "${line#*:}" | tr '[:upper:]' '[:lower:]' )"
[[ ${mode[i]} == "master" ]] && mode[i]="managed"
;;
*'Encryption key:'*)
enc[i]="${line#*:}"
;;
*Quality*)
qual[i]="${line#*:}"
qual[i]="${qual[i]%/*}"
qual[i]="${qual[i]//[![:digit:]]/}"
qual[i]="${qual[i]:-0}"
;;
esac
done < <( iwlist "${iface}" scan 2>/dev/null )
if ${error}; then
ewarn "${iface} does not support scanning"
x="adhoc_essid_${ifvar}"
[[ -n ${!x} ]] && return 0
if [[ -n ${preferred_aps} ]]; then
[[ ${associate_order} == "forcepreferred" \
|| ${associate_order} == "forcepreferredonly" ]] && return 0
fi
eerror "You either need to set a preferred_aps list in /etc/conf.d/wireless"
eerror " preferred_aps=( \"ESSID1\" \"ESSID2\" )"
eerror " and set associate_order_${iface}=\"forcepreferred\""
eerror " or set associate_order_${iface}=\"forcepreferredonly\""
eerror "or hardcode the ESSID to \"any\" and let the driver find an Access Point"
eerror " essid_${iface}=\"any\""
eerror "or configure defaulting to Ad-Hoc when Managed fails"
eerror " adhoc_essid_${iface}=\"WLAN\""
eerror "or hardcode the ESSID against the interface (not recommended)"
eerror " essid_${iface}=\"ESSID\""
return 1
fi
# We may need to unset the previous private driver ioctls
x="iwpriv_scan_post_${ifvar}"
if [[ -n ${!x} ]]; then
if ! eval iwpriv "${iface}" "${!x}" ; then
ewarn "${iface} does not support the following private ioctls" \
ewarn " ${!x}"
fi
fi
# Change back mode if needed
x="mode_${ifvar}"
x="$( echo "${!x:-managed}" | tr '[:upper:]' '[:lower:]' )"
[[ ${mode} != "${x}" ]] && iwconfig "${iface}" mode "${x}"
for (( i=0; i<${#mac[@]}; i++ )); do
# Don't like ad-hoc nodes by default
[[ ${mode[i]} == "ad-hoc" ]] && (( qual[i]-=10000 ))
sortline="${sortline}${qual[i]} ${i}\n"
done
sortline=( $( echo -e "${sortline}" | sort -nr ) )
for (( i=0; i<${#mac[@]}; i++ )); do
(( x=(i * 2) + 1 ))
mac_APs[i]="${mac[${sortline[x]}]}"
essid_APs[i]="${essid[${sortline[x]}]}"
mode_APs[i]="${mode[${sortline[x]}]}"
enc_APs[i]="${enc[${sortline[x]}]}"
done
return 0
}
# void iwconfig_scan_report(void)
#
# Report the results of the scan and re-map any ESSIDs if they
# have been configured for the MAC address found
iwconfig_scan_report() {
local i k m remove
local -a u
[[ -z ${mac_APs} ]] && ewarn " no access points found"
# We need to do the for loop like this so we can
# dynamically remove from the array
eindent
for ((i=0; i<${#mac_APs[@]}; i++)); do
k="(${mode_APs[i]}"
[[ ${enc_APs[i]} != "off" ]] && k="${k}, encrypted"
k="${k})"
if [[ -z ${essid_APs[i]} ]]; then
veinfo "Found ${mac_APs[i]} ${k}"
else
veinfo "Found \"${essid_APs[i]//\\\\/\\\\}\" at ${mac_APs[i]} ${k}"
fi
eindent
m="mac_essid_${mac_APs[i]//:/}"
if [[ -n ${!m} ]]; then
essid_APs[i]="${!m}"
veinfo "mapping to \"${!m//\\\\/\\\\}\""
fi
remove=false
# If we don't know the essid then we cannot connect to them
# so we remove them from our array
if [[ -z ${essid_APs[i]} ]]; then
remove=true
else
for k in "${blacklist_aps[@]}"; do
if [[ ${k} == "${essid_APs[i]}" ]]; then
vewarn "\"${k//\\\\/\\\\}\" has been blacklisted - not connecting"
remove=true
break
fi
done
fi
eoutdent
${remove} && u=( "${u[@]}" "${i}" )
done
eoutdent
# Now we remove any duplicates
for ((i=0; i < ${#essid_APs[@]} - 1; i++)); do
for ((j=${i} + 1; j <${#essid_APs[@]}; j++)); do
[[ ${essid_APs[i]} == "${essid_APs[j]}" ]] && u=( "${u[@]}" "${j}" )
done
done
for i in ${u[@]}; do
unset essid_APs[i]
unset mode_APs[i]
unset mac_APs[i]
unset enc_APs[i]
done
# We need to squash our arrays so indexes work again
essid_APs=( "${essid_APs[@]}" )
mode_APs=( "${mode_APs[@]}" )
mac_APs=( "${mac_APs[@]}" )
enc_APs=( "${enc_APs[@]}" )
}
# bool iwconfig_force_preferred(char *iface)
#
# Forces the preferred_aps list to associate in order
# but only if they were not picked up by our scan
iwconfig_force_preferred() {
local iface=$1 essid i
[[ -z ${preferred_aps} ]] && return 1
ewarn "Trying to force preferred in case they are hidden"
for essid in "${preferred_aps[@]}"; do
local found_AP=false
for ((i = 0; i < ${#mac_APs[@]}; i++)); do
if [[ ${essid} == "${essid_APs[i]}" ]]; then
found_AP=true
break
fi
done
if ! ${found_AP} ; then
ESSID="${essid}"
iwconfig_associate "${iface}" && return 0
fi
done
ewarn "Failed to associate with any preferred access points on ${iface}"
return 1
}
# bool iwconfig_connect_preferred(char *iface)
#
# Connects to preferred_aps in order if they were picked up
# by our scan
iwconfig_connect_preferred() {
local iface="$1" essid i
for essid in "${preferred_aps[@]}"; do
for ((i=0; i<${#essid_APs[@]}; i++)); do
if [[ ${essid} == "${essid_APs[i]}" ]]; then
ESSID="${essid}"
iwconfig_associate "${iface}" "${mode_APs[i]}" "${mac_APs[i]}" \
"${enc_APs[i]}" && return 0
break
fi
done
done
return 1
}
# bool iwconfig_connect_not_preferred(char *iface)
#
# Connects to any AP's found that are not in
# our preferred list
iwconfig_connect_not_preferred() {
local iface=$1 i ap has_preferred
for ((i=0; i<${#mac_APs[@]}; i++)); do
has_preferred=false
for ap in "${preferred_aps[@]}"; do
if [[ ${ap} == "${essid_APs[i]}" ]]; then
has_preferred=true
break
fi
done
if ! ${has_preferred} ; then
ESSID="${essid_APs[i]}"
iwconfig_associate "${iface}" "${mode_APs[i]}" "${mac_APs[i]}" \
"${enc_APs[i]}" && return 0
fi
done
return 1
}
# void iwconfig_defaults(char *iface)
#
# Apply some sane defaults to the wireless interface
# incase the user already applied some changes
iwconfig_defaults() {
local iface="$1"
# Set some defaults
iwconfig "${iface}" rate auto 2>/dev/null
iwconfig "${iface}" rts auto 2>/dev/null
iwconfig "${iface}" frag auto 2>/dev/null
iwconfig "${iface}" txpower auto 2>/dev/null
}
# void iwconfig_strip_associated(char *iface)
#
# We check to see which ifaces have associated AP's except for the iface
# given and remove those AP's from the scan list
# We also remove from the preferred list
iwconfig_strip_associated() {
local iface="$1" e a j
local essid="$( iwconfig_get_essid "${iface}" )"
local -a ifaces=( $( iwconfig 2>/dev/null | grep -o "^\w*" ) )
for i in "${ifaces[@]}"; do
[[ ${i} == ${iface} ]] && continue
interface_is_up "${i}" || continue
iwconfig_test_associated "${i}" || continue
e="$( iwconfig_get_essid "${i}" )"
local -a u=()
for ((j=0; j<${#mac_APs[@]}; j++)); do
if [[ ${essid_APs[j]} == "${e}" ]]; then
ewarn "${e} has already been associated with ${i}"
unset essid_APs[j]
unset mode_Aps[j]
unset mac_APs[j]
unset enc_APs[j]
# We need to squash our arrays so that indexes work
essid_APs=( "${essid_APs[@]}" )
mode_APs=( "${mode_APs[@]}" )
mac_APs=( "${mac_APs[@]}" )
enc_APs=( "${enc_APs[@]}" )
break
fi
done
for ((j=0; j<${#preferred_aps[@]}; j++)); do
if [[ ${preferred_aps[j]} == "${e}" ]]; then
unset preferred_aps[j]
preferred_aps=( "${preferred_aps[@]}" )
break
fi
done
done
}
# bool iwconfig_configure(char *iface)
#
# The main startup code
# First we bring the interface up, apply defaults, apply user configuration
# Then we test to see if ad-hoc mode has been requested and branch if needed
# Then we scan for access points and try to connect to them in a predetermined order
# Once we're connected we show a report and then configure any interface
# variables for the ESSID
iwconfig_configure() {
local iface="$1" test x e ifvar="$( bash_variable "$1" )"
local -a essid_APs mac_APs mode_APs enc_APs
iwconfig_defaults "${iface}"
iwconfig_user_config "${iface}"
ESSID="essid_${ifvar}"
ESSID="${!ESSID}"
# Setup ad-hoc mode?
x="mode_${ifvar}"
x="$( echo "${!x:-managed}" | tr '[:upper:]' '[:lower:]' )"
if [[ ${x} == "ad-hoc" || ${x} == "master" ]]; then
iwconfig_setup_specific "${iface}" "${x}"
return $?
fi
if [[ ${x} != "managed" && ${x} != "auto" ]]; then
eerror "Only managed, ad-hoc, master and auto modes are supported"
return 1
fi
# We only change the mode if it's not the same as some drivers
# only do managed and throw an error changing to managed
local cur_mode="$( iwconfig_get_mode "${iface}" )"
if [[ ${cur_mode} != "${x}" ]]; then
if ! iwconfig "${iface}" mode "${x}" ; then
eerror "${iface} does not support setting the mode to \"${x}\""
return 1
fi
fi
# These arrays hold the results of our scan
local -a mac_APs essid_APs enc_APs
# Has an ESSID been forced?
if [[ -n ${ESSID} ]]; then
iwconfig_associate "${iface}" && return 0
[[ ${ESSID} == "any" ]] && iwconfig_force_preferred "${iface}" && return 0
ESSID="adhoc_essid_${ifvar}"
ESSID="${!ESSID}"
if [[ -n ${ESSID} ]]; then
iwconfig_setup_specific "${iface}" ad-hoc
return $?
fi
return 1
fi
# Do we have a preferred Access Point list specific to the interface?
x="preferred_aps_${ifvar}[@]"
[[ -n ${!x} ]] && preferred_aps=( "${!x}" )
# Do we have a blacklist Access Point list specific to the interface?
x="blacklist_aps_${ifvar}[@]"
[[ -n ${!x} ]] && blacklist_aps=( "${!x}" )
# Are we forcing preferred only?
x="associate_order_${ifvar}"
[[ -n ${!x} ]] && associate_order="${!x}"
associate_order="$(
echo "${associate_order:-any}" \
| tr '[:upper:]' '[:lower:]'
)"
if [[ ${associate_order} == "forcepreferredonly" ]]; then
iwconfig_force_preferred "${iface}" && return 0
else
iwconfig_scan "${iface}" || return 1
iwconfig_scan_report
# Strip AP's from the list that have already been associated with
# other wireless cards in the system if requested
x="unique_ap_${ifvar}"
[[ -n ${!x} ]] && unique_ap="${!x}"
unique_ap="$( echo "${unique_ap:-no}" | tr '[:upper:]' '[:lower:]' )"
[[ ${unique_ap} != "no" ]] && iwconfig_strip_associated "${iface}"
iwconfig_connect_preferred "${iface}" && return 0
[[ ${associate_order} == "forcepreferred" \
|| ${associate_order} == "forceany" ]] \
&& iwconfig_force_preferred "${iface}" && return 0
[[ ${associate_order} == "any" || ${associate_order} == "forceany" ]] \
&& iwconfig_connect_not_preferred "${iface}" && return 0
fi
e="associate with"
[[ -z ${mac_APs} ]] && e="find"
[[ ${preferred_only} == "force" || ${preferred_aps} == "forceonly" ]] \
&& e="force"
e="Couldn't ${e} any access points on ${iface}"
ESSID="adhoc_essid_${ifvar}"
ESSID="${!ESSID}"
if [[ -n ${ESSID} ]]; then
ewarn "${e}"
iwconfig_setup_specific "${iface}" ad-hoc
return $?
fi
eerror "${e}"
return 1
}
# bool iwconfig_pre_start(char *iface)
#
# Start entry point
# First we check if wireless extensions exist on the interface
# If they are then we configue wireless
iwconfig_pre_start() {
local iface="$1" r=0
# We don't configure wireless if we're being called from
# the background
${IN_BACKGROUND} && return 0
save_options "ESSID" ""
interface_exists "${iface}" || return 0
# We need to bring the interface up, as some cards do not register
# in /proc/wireless until they are brought up.
interface_up "${iface}"
if ! iwconfig_exists "${iface}" ; then
veinfo "Wireless extensions not found for ${iface}"
return 0
fi
# Check for rf_kill - only ipw supports this at present, but other
# cards may in the future.
if [[ -e "/sys/class/net/${iface}/device/rf_kill" ]]; then
if [[ $( < "/sys/class/net/${iface}/device/rf_kill" ) != 0 ]]; then
eerror "Wireless radio has been killed for interface ${iface}"
return 1
fi
fi
einfo "Configuring wireless network for ${iface}"
# Are we a proper IEEE device?
# Most devices reutrn IEEE 802.11b/g - but intel cards return IEEE in lower case
# and RA cards return RAPCI or similar which really sucks :(
# For the time being, we will test prism54 not loading firmware which reports
# NOT READY!
x="$( iwconfig_get_type "${iface}" )"
if [[ ${x} == "NOT READY!" ]]; then
eerror "Looks like there was a probem loading the firmware for ${iface}"
return 1
fi
# Setup IFS incase parent script has modified it
local IFS=$' '$'\n'$'\t'
if iwconfig_configure "${iface}" ; then
save_options "ESSID" "${ESSID}"
return 0
fi
eerror "Failed to configure wireless for ${iface}"
iwconfig_defaults "${iface}"
unset ESSID ESSIDVAR
interface_down "${iface}"
return 1
}
iwconfig_post_stop() {
interface_exists "${iface}" || return 0
iwconfig_defaults "${iface}"
}
# vim: set ft=sh ts=4 :
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