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Diffstat (limited to 'net.Linux/iwconfig.sh')
| -rw-r--r-- | net.Linux/iwconfig.sh | 710 |
1 files changed, 710 insertions, 0 deletions
diff --git a/net.Linux/iwconfig.sh b/net.Linux/iwconfig.sh new file mode 100644 index 00000000..bed13a54 --- /dev/null +++ b/net.Linux/iwconfig.sh @@ -0,0 +1,710 @@ +# Copyright 2004-2007 Gentoo Foundation +# Distributed under the terms of the GNU General Public License v2 +# 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 + +_config_vars="$_config_vars essid mode associate_timeout sleep_scan preferred_aps blacklist_aps" + +iwconfig_depend() { + program /sbin/iwconfig + after plug + before interface + provide wireless +} + +iwconfig_get_wep_status() { + local mode= status="disabled" + + # No easy way of doing this grep in bash regex :/ + if LC_ALL=C iwconfig "${IFACE}" | grep -qE "^ +Encryption key:[*0-9,A-F]" ; then + status="enabled" + mode=$(LC_ALL=C iwconfig "${IFACE}" | sed -n -e 's/^.*Security mode:\(.*[^ ]\).*/\1/p') + [ -n "${mode}" ] && mode=" - ${mode}" + fi + + echo "(WEP ${status}${mode})" +} + +_get_ssid() { + local i=5 ssid= + + while [ ${i} -gt 0 ] ; do + ssid=$(iwgetid --raw "${IFACE}") + if [ -n "${ssid}" ] ; then + echo "${ssid}" + return 0 + fi + sleep 1 + i=$((${i} + 1)) + done + + return 1 +} + +_get_ap_mac_address() { + local mac="$(iwgetid --raw --ap "${IFACE}")" + case "${mac}" in + "00:00:00:00:00:00") return 1 ;; + "44:44:44:44:44:44") return 1 ;; + "FF:00:00:00:00:00") return 1 ;; + "FF:FF:FF:FF:FF:FF") return 1 ;; + *) echo "${mac}" ;; + esac +} + +iwconfig_get_mode() { + LC_ALL=C iwgetid --mode "${IFACE}" | \ + sed -n -e 's/^.*Mode:\(.*\)/\1/p' | \ + tr '[:upper:]' '[:lower:]' +} + +iwconfig_set_mode() { + local mode="$1" + [ "${mode}" = "$(iwconfig_get_mode)" ] && return 0 + + # Devicescape stack requires the interface to be down + _down + iwconfig "${IFACE}" mode "${mode}" || return 1 + _up +} + +iwconfig_get_type() { + LC_ALL=C iwconfig "${IFACE}" | sed -n -e 's/^'"$1"' *\([^ ]* [^ ]*\).*/\1/p' +} + +iwconfig_report() { + local mac= m="connected to" + local ssid="$(_get_ssid)" + local wep_status="$(iwconfig_get_wep_status)" + local channel="$(iwgetid --raw --channel "${iface}")" + [ -n "${channel}" ] && channel="on channel ${channel} " + local mode="$(iwconfig_get_mode)" + if [ "${mode}" = "master" ]; then + m="configured as" + else + mac="$(_get_ap_mac_address)" + [ -n "${mac}" ] && mac=" at ${mac}" + fi + + eindent + einfo "${IFACE} ${m} SSID \"${SSID}\"${mac}" + einfo "in ${mode} mode ${channel}${wep_status}" + eoutdent +} + +iwconfig_get_wep_key() { + local mac="$1" key= + [ -n "${mac}" ] && mac="$(echo "${mac}" | sed -e 's/://g')" + eval key=\$mac_key_${mac} + [ -z "${key}" ] && eval key=\$key_${SSIDVAR} + if [ -z "${key}" ] ; then + echo "off" + else + set -- ${key} + local x= e=false + for x in "$@" ; do + if [ "${x}" = "enc" ] ; then + e=true + break + fi + done + ${e} || key="${key} enc open" + echo "${key}" + fi +} + +iwconfig_user_config() { + local conf= var=${SSIDVAR} + [ -z "${var}" ] && var=${IFVAR} + + eval "$(_get_array "iwconfig_${var}")" + for conf in "$@" ; do + if ! eval iwconfig "${IFACE}" "${conf}" ; then + ewarn "${IFACE} does not support the following configuration commands" + ewarn " ${conf}" + fi + done + + eval "$(_get_array "iwpriv_${var}")" + for conf in "$@" ; do + if ! eval iwpriv "${IFACE}" "${conf}" ; then + ewarn "${IFACE} does not support the following private ioctls" + ewarn " ${conf}" + fi + done +} + +iwconfig_setup_specific() { + local mode="$1" channel= + if [ -z "${SSID}" ]; then + eerror "${IFACE} requires an SSID to be set to operate in ${mode} mode" + eerror "adjust the ssid_${IFVAR} setting in /etc/conf.d/net" + return 1 + fi + SSIDVAR=$(_shell_var "${SSID}") + local key=$(iwconfig_get_wep_key) + + iwconfig_set_mode "${mode}" + + # Now set the key + if ! eval iwconfig "${IFACE}" key "${key}" ; then + if [ "${key}" != "off" ]; then + ewarn "${IFACE} does not support setting keys" + ewarn "or the parameter \"mac_key_${SSIDVAR}\" or \"key_${SSIDVAR}\" is incorrect" + fi + fi + + # Then set the SSID + if ! eval iwconfig "${IFACE}" essid "${SSID}" ; then + eerror "${IFACE} does not support setting SSID to \"${ESSID}\"" + return 1 + fi + + eval channel=\$channel_${SSIDVAR} + [ -z "${channel}" ] && eval channel=\$channel_${IFVAR} + # We default the channel to 3 + if ! iwconfig "${IFACE}" channel "${channel:-3}" ; then + ewarn "${IFACE} does not support setting the channel to \"${channel:-3}\"" + return 1 + fi + + # Finally apply the user Config + iwconfig_user_config + + iwconfig_report + return 0 +} + +iwconfig_wait_for_association() { + local timeout= i=0 + eval timeout=\$associate_timeout_${IFVAR} + timeout=${timeout:-10} + + [ ${timeout} -eq 0 ] \ + && vewarn "WARNING: infinite timeout set for association on ${IFACE}" + + while true; do + # Use sysfs if we can + if [ -e /sys/class/net/"${IFACE}"/carrier ] ; then + if [ "$(cat /sys/class/net/"${IFACE}"/carrier)" = "1" ] ; then + # Double check we have an essid. This is mainly for buggy + # prism54 drivers that always set their carrier on :/ + [ -n "$(iwgetid --raw "${IFACE}")" ] && return 0 + fi + else + local atest= + eval atest=\$associate_test_${IFVAR} + atest=${atest:-mac} + if [ "${atest}" = "mac" -o "${atest}" = "all" ] ; then + [ -n "$(_get_ap_mac_address)" ] && return 0 + fi + if [ "${atest}" = "quality" -o "${atest}" = "all" ] ; then + [ "$(sed -n -e 's/^.*'"${IFACE}"': *[0-9]* *\([0-9]*\).*/\1/p' \ + /proc/net/wireless)" != "0" ] && return 0 + fi + fi + + sleep 1 + [ ${timeout} -eq 0 ] && continue + i=$((${i} + 1)) + [ ${i} -ge ${timeout} ] && return 1 + done + return 1 +} + +iwconfig_associate() { + local mode="${1:-managed}" mac="$2" wep_required="$3" freq="$4" chan="$5" + local w="(WEP Disabled)" key= + + iwconfig_set_mode "${mode}" + + if [ "${SSID}" = "any" ]; then + iwconfig "${IFACE}" ap any 2>/dev/null + unset ESSIDVAR + else + SSIDVAR=$(_shell_var "${SSID}") + key="$(iwconfig_get_wep_key "${mac}")" + if [ "${wep_required}" = "on" -a "${key}" = "off" ] ; then + ewarn "WEP key is not set for \"${SSID}\" - not connecting" + return 1 + fi + if [ "${wep_required}" = "off" -a "${key}" != "off" ] ; then + key="off" + ewarn "\"${SSID}\" is not WEP enabled - ignoring setting" + fi + + if ! eval iwconfig "${IFACE}" key "${key}" ; then + if [ "${key}" != "off" ] ; then + ewarn "${IFACE} does not support setting keys" + ewarn "or the parameter \"mac_key_${SSIDVAR}\" or \"key_${SSIDVAR}\" is incorrect" + return 1 + fi + fi + [ "${key}" != "off" ] && w="$(iwconfig_get_wep_status "${iface}")" + fi + + if ! eval iwconfig "${IFACE}" essid "${SSID}" ; then + if [ "${SSID}" != "any" ] ; then + ewarn "${IFACE} does not support setting ESSID to \"${SSID}\"" + fi + fi + + # Only use channel or frequency + if [ -n "${chan}" ] ; then + iwconfig "${IFACE}" channel "${chan}" + elif [ -n "${freq}" ] ; then + iwconfig "${IFACE}" freq "${freq}" + fi + [ -n "${mac}" ] && iwconfig "${IFACE}" ap "${mac}" + + # Finally apply the user Config + iwconfig_user_config + + ebegin "Connecting to \"${SSID}\" in ${mode} mode ${w}" + + if [ "${SSID}" != "any" ] && type preassociate >/dev/null 2>/dev/null ; then + veinfo "Running preassociate function" + veindent + ( preassociate ) + local e=$? + veoutdent + if [ ${e} -eq 0 ] ; then + veend 1 "preassociate \"${SSID}\" on ${IFACE} failed" + return 1 + fi + fi + + if ! iwconfig_wait_for_association ; then + eend 1 + return 1 + fi + eend 0 + + if [ "${SSID}" = "any" ]; then + SSID="$(_get_ssid)" + iwconfig_associate + return $? + fi + + iwconfig_report + + if type postassociate >/dev/null 2>/dev/null ; then + veinfo "Running postassociate function" + veindent + ( postassociate ) + veoutdent + fi + + return 0 +} + +iwconfig_scan() { + local x= i=0 scan= + einfo "Scanning for access points" + eindent + + # Sleep if required + eval x=\$sleep_scan_${IFVAR} + [ -n "${x}" ] && sleep "${x}" + + while [ ${i} -lt 3 ] ; do + scan="${scan} $(iwlist "${IFACE}" scan 2>/dev/null | sed -e "s/'/'\\\\''/g" -e "s/$/'/g" -e "s/^/'/g")" + i=$((${i} + 1)) + done + + if [ -z "${scan}" ] ; then + ewarn "${iface} does not support scanning" + eoutdent + eval x=\$adhoc_essid_${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=\"SSID1 SSID2\"" + eerror " and set associate_order_${IFVAR}=\"forcepreferred\"" + eerror " or set associate_order_${IFVAR}=\"forcepreferredonly\"" + eerror "or hardcode the SSID to \"any\" and let the driver find an Access Point" + eerror " ssid_${IFVAR}=\"any\"" + eerror "or configure defaulting to Ad-Hoc when Managed fails" + eerror " adhoc_essid_${IFVAR}=\"WLAN\"" + eerror "or hardcode the ESSID against the interface (not recommended)" + eerror " essid_${IFVAR}=\"ESSID\"" + return 1 + fi + + local OIFS=$IFS + APS=-1 + eval set -- ${scan} + for line in "$@" ; do + case "${line}" in + *Address:*) + APS=$((${APS} + 1)) + eval MAC_${APS}=\""$(echo "${line#*: }" | tr '[:lower:]' '[:upper:]')"\" + eval QUALITY_${APS}=0 + ;; + *ESSID:*) + x=${line#*\"} + x=${x%*\"} + eval SSID_${APS}=\$x + ;; + *Mode:*) + x="$(echo "${line#*:}" | tr '[:upper:]' '[:lower:]')" + if [ "${x}" = "master" ] ; then + eval MODE_${APS}=\"managed\" + else + eval MODE_${APS}=\$x + fi + ;; + *'Encryption key:'*) + x=${line#*:} + eval ENC_${APS}=\$x + ;; + #*Frequency:*) + # freq[i]="${line#*:}" + # x="${freq[i]#* }" + # freq[i]="${freq[i]%% *}${x:0:1}" + # ;; + *Channel:*) + x=${line#*:} + x=${x%% *} + eval CHAN_${APS}=\$x + ;; + *Quality*) + x=${line#*:} + x=${x%/*} + x="$(echo "${x}" | sed -e 's/[^[:digit:]]//g')" + x=${x:-0} + eval QUALITY_${APS}=\$x + ;; + esac + done + + if [ -z "${MAC_0}" ]; then + ewarn "no access points found" + eoutdent + return 1 + fi + + # Sort based on quality + local i=0 k=1 a= b= x= t= + while [ ${i} -lt ${APS} ] ; do + k=$((${i} + 1)) + while [ ${k} -le ${APS} ] ; do + eval a=\$QUALITY_${i} + [ -z "${a}" ] && break + eval b=\$QUALITY_${k} + if [ -n "${b}" -a "${a}" -lt "${b}" ] ; then + for x in MAC SSID CHAN QUALITY ENC ; do + eval t=\$${x}_${i} + eval ${x}_${i}=\$${x}_${k} + eval ${x}_${k}=\$t + done + fi + k=$((${k} + 1)) + done + i=$((${i} + 1)) + done + + # Strip any duplicates + local i=0 k=1 a= b= + while [ ${i} -lt ${APS} ] ; do + k=$((${i} + 1)) + while [ ${k} -le ${APS} ] ; do + eval a=\$MAC_${i} + eval b=\$MAC_${k} + if [ "${a}" = "${b}" ] ; then + eval a=\$QUALITY_${i} + eval b=\$QUALITY_${k} + if [ -n "${a}" -a -n "${b}" ] ; then + if [ ${a} -ge ${b} ] ; then + unset MAC_${k} SSID_${k} CHAN_${k} QUALITY_${k} ENC_${k} + else + unset MAC_${i} SSID_${i} CHAN_${i} QUALITY_${i} ENC_${i} + fi + else + unset MAC_${k} SSID_${k} CHAN_${k} QUALITY_${k} ENC_${k} + fi + fi + k=$((${k} + 1)) + done + i=$((${i} + 1)) + done + + local i=0 e= m= black= s= + eval "$(_get_array "blacklist_aps")" + black="$@" + + while [ ${i} -le ${APS} ] ; do + eval x=\$MAC_${i} + if [ -z "${x}" ] ; then + i=$((${i} + 1)) + continue + fi + + eval m=\$MODE_${i} + eval s=\$SSID_${i} + eval q=\$QUALITY_${i} + eval e=\$ENC_${i} + if [ -n "${e}" -a "${e}" != "off" ] ; then + e=", encrypted" + else + e="" + fi + if [ -z "${s}" ] ; then + einfo "Found ${x}, ${m}${e}" + else + einfo "Found \"${s}\" at ${x}, ${m}${e}" + fi + + x="$(echo "${x}" | sed -e 's/://g')" + eval x=\$mac_ssid_${x} + if [ -n "${x}" ] ; then + eval SSID_${i}=\$x + s=${x} + eindent + einfo "mapping to \"${x}\"" + eoutdent + fi + + eval "$(_get_array "blacklist_aps")" + for x in "$@" ; do + if [ "${x}" = "${s}" ] ; then + ewarn "${s} has been blacklisted - not connecting" + unset SSID_${i} MAC_${i} CHAN_${i} QUALITY_${i} ENC_${i} + fi + done + i=$((${i} + 1)) + done + eoutdent +} + +iwconfig_force_preferred() { + [ -z "${preferred_aps}" ] && return 1 + + ewarn "Trying to force preferred in case they are hidden" + eval "(_get_array "preferred_aps")" + local ssid= + for ssid in "$@"; do + local found_AP=false i=0 e= + while [ ${i} -le ${APS} ] ; do + eval e=\$SSID_${i} + if [ "${e}" = "${ssid}" ] ; then + found_AP=true + break + fi + i=$((${i} + 1)) + done + if ! ${found_AP} ; then + SSID=${e} + iwconfig_associate && return 0 + fi + done + + ewarn "Failed to associate with any preferred access points on ${IFACE}" + return 1 +} + +iwconfig_connect_preferred() { + local essid= i=0 mode= mac= enc= freq= chan= + + eval "$(_get_array preferred_aps)" + for essid in "$@"; do + while [ ${i} -le ${APS} ] ; do + eval e=\$SSID_${i} + if [ "${e}" = "${essid}" ] ; then + SSID=${e} + eval mode=\$MODE_${i} + eval mac=\$MAC_${i} + eval enc=\$ENC_${i} + eval freq=\$FREQ_${i} + eval chan=\$CHAN_${i} + iwconfig_associate "${mode}" "${mac}" "${enc}" "${freq}" \ + "${chan}" && return 0 + fi + i=$((${i} + 1)) + done + done + + return 1 +} + +iwconfig_connect_not_preferred() { + local essid= i=0 mode= mac= enc= freq= chan= pref=false + + while [ ${i} -le ${APS} ] ; do + eval e=\$SSID_${i} + eval "$(_get_array preferred_aps)" + for essid in "$@" ; do + if [ "${e}" = "${essid}" ] ; then + pref=true + break + fi + done + + if ! ${pref} ; then + SSID=${e} + eval mode=\$MODE_${i} + eval mac=\$MAC_${i} + eval enc=\$ENC_${i} + eval freq=\$FREQ_${i} + eval chan=\$CHAN_${i} + iwconfig_associate "${mode}" "${mac}" "${enc}" "${freq}" \ + "${chan}" && return 0 + fi + i=$((${i} + 1)) + done + + return 1 +} + +iwconfig_defaults() { + local x= + for x in txpower rate rts frag ; do + iwconfig "${IFACE}" "${x}" auto 2>/dev/null + done + + # Release the AP forced + # Must do ap and then essid otherwise scanning borks + iwconfig "${IFACE}" ap off 2>/dev/null + iwconfig "${IFACE}" essid off 2>/dev/null +} + +iwconfig_configure() { + local x APS + eval ESSID=\$ssid_${IFVAR} + + # Setup ad-hoc mode? + eval x=\$mode_${IFVAR} + x=${x:-managed} + if [ "${x}" = "ad-hoc" -o "${x}" = "master" ] ; then + iwconfig_setup_specific "${x}" + return $? + fi + + if [ "${x}" != "managed" -a "${x}" != "auto" ] ; then + eerror "Only managed, ad-hoc, master and auto modes are supported" + return 1 + fi + + # Has an ESSID been forced? + if [ -n "${ESSID}" ]; then + iwconfig_set_mode "${x}" + iwconfig_associate && return 0 + [ "${ESSID}" = "any" ] && iwconfig_force_preferred && return 0 + + eval ESSID=\$adhoc_essid_${IFVAR} + if [ -n "${ESSID}" ]; then + iwconfig_setup_specific 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? + eval x=\$associate_order_${IFVAR} + [ -n "${x}" ] && associate_order=${x} + associate_order=${associate_order:-any} + if [ "${associate_order}" = "forcepreferredonly" ]; then + iwconfig_force_preferred && return 0 + else + iwconfig_scan || return 1 + iwconfig_connect_preferred && return 0 + [ "${associate_order}" = "forcepreferred" ] || \ + [ "${associate_order}" = "forceany" ] && \ + iwconfig_force_preferred && return 0 + [ "${associate_order}" = "any" ] || \ + [ "${associate_order}" = "forceany" ] && \ + iwconfig_connect_not_preferred && return 0 + fi + + e="associate with" + [ -z "${MAC_0}" ] && e="find" + [ "${preferred_aps}" = "force" ] || \ + [ "${preferred_aps}" = "forceonly" ] && \ + e="force" + e="Couldn't ${e} any access points on ${IFACE}" + + eval SSID=\$adhoc_ssid_${IFVAR} + if [ -n "${SSID}" ]; then + ewarn "${e}" + iwconfig_setup_specific ad-hoc + return $? + fi + + eerror "${e}" + return 1 +} + +iwconfig_pre_start() { + # We don't configure wireless if we're being called from + # the background + ${IN_BACKGROUND} && return 0 + + save_options "SSID" "" + _exists || return 0 + + if ! _is_wireless ; then + veinfo "Wireless extensions not found for ${IFACE}" + return 0 + fi + + iwconfig_defaults + iwconfig_user_config + + # Set the base metric to be 2000 + metric=2000 + + # Check for rf_kill - only ipw supports this at present, but other + # cards may in the future. + if [ -e /sys/class/net/"${IFACE}"/device/rf_kill ] ; then + if [ $(cat /sys/class/net/"${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)" + if [ "${x}" = "NOT READY!" ]; then + eerror "Looks like there was a probem loading the firmware for ${IFACE}" + return 1 + fi + + if iwconfig_configure ; then + save_options "ESSID" "${ESSID}" + return 0 + fi + + eerror "Failed to configure wireless for ${IFACE}" + iwconfig_defaults + iwconfig "${IFACE}" txpower off 2>/dev/null + unset ESSID ESSIDVAR + _down + return 1 +} + +iwconfig_post_stop() { + ${IN_BACKGROUND} && return 0 + _exists || return 0 + iwconfig_defaults + iwconfig "${IFACE}" txpower off 2>/dev/null +} + +# vim: set ts=4 |