diff options
| -rw-r--r-- | doc/net.example.Linux.in | 10 | ||||
| -rw-r--r-- | net/Makefile | 3 | ||||
| -rw-r--r-- | net/iw.sh | 729 |
3 files changed, 738 insertions, 4 deletions
diff --git a/doc/net.example.Linux.in b/doc/net.example.Linux.in index c895a17..bff7ede 100644 --- a/doc/net.example.Linux.in +++ b/doc/net.example.Linux.in @@ -168,9 +168,13 @@ #----------------------------------------------------------------------------- # WIRELESS (802.11 support) -# Wireless can be provided by iwconfig or wpa_supplicant -# wpa_supplicant is preferred, use the modules directive to prefer iwconfig. -#modules="iwconfig" +# Wireless can be provided by iw, iwconfig or wpa_supplicant +# wpa_supplicant is preferred, use the modules directive to prefer iw or iwconfig. +#modules="iw" # Most modern drivers +#modules="iwconfig" # Older WEXT only drivers, i.e. ipw2x00 +# +# iw +# emerge net-wireless/iw # # iwconfig # emerge net-wireless/wireless-tools diff --git a/net/Makefile b/net/Makefile index ce73c1e..347e89c 100644 --- a/net/Makefile +++ b/net/Makefile @@ -13,7 +13,8 @@ SRCS-Linux= iwconfig.sh.in udhcpc.sh.in INC-Linux= adsl.sh apipa.sh arping.sh bonding.sh br2684ctl.sh bridge.sh \ ccwgroup.sh clip.sh ethtool.sh iproute2.sh ifplugd.sh ip6to4.sh \ ipppd.sh iwconfig.sh netplugd.sh pppd.sh pump.sh tuntap.sh udhcpc.sh \ - vlan.sh macvlan.sh ip6rd.sh firewalld.sh dummy.sh hsr.sh l2tp.sh + vlan.sh macvlan.sh ip6rd.sh firewalld.sh dummy.sh hsr.sh l2tp.sh \ + iw.sh SRCS-NetBSD= ifwatchd.sh.in INC-NetBSD= ifwatchd.sh diff --git a/net/iw.sh b/net/iw.sh new file mode 100644 index 0000000..de5797b --- /dev/null +++ b/net/iw.sh @@ -0,0 +1,729 @@ +# Copyright (c) 2016 Brian Evans <grknight@gentoo.org> +# Based on iwconfig.sh Copyright (c) 2007-2008 Roy Marples <roy@marples.name> +# Released under the 2-clause BSD license. + +_config_vars="$_config_vars ssid mode associate_timeout sleep_scan" +_config_vars="$_config_vars preferred_aps blacklist_aps" + +iw_depend() +{ + program /usr/sbin/iw + after plug + before interface + provide wireless + # Prefer us over iwconfig + after iwconfig +} + +_get_ssid() +{ + local i=5 ssid= + + while [ ${i} -gt 0 ]; do + ssid=$(iw dev "${IFACE}" link \ + | sed -n -e 's/^.*SSID: \(.*[^ ]\).*/\1/p') + if [ -n "${ssid}" ]; then + echo "${ssid}" + return 0 + fi + sleep 1 + : $(( i -= 1 )) + done + + return 1 +} + +_get_ap_mac_address() +{ + local mac="$(iw dev "${IFACE}" station dump \ + | sed -n -e 's/^Station \([0-9a-f:]*\).*/\1/p')" + 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 +} + +iw_get_mode() +{ + LC_ALL=C iw dev "${IFACE}" info | \ + sed -n -e 's/^.*type \(.*[^ ]\).*/\1/p' | \ + tr '[:upper:]' '[:lower:]' +} + +iw_get_channel() +{ + LC_ALL=C iw dev "${IFACE}" info | \ + sed -n -e 's/^.*channel \(.*\)/\1/p' | cut -d , -f 1 |\ + tr '[:upper:]' '[:lower:]' +} + +iw_set_mode() +{ + local mode="$1" + [ "${mode}" = "$(iw_get_mode)" ] && return 0 + + # Devicescape stack requires the interface to be down + _down + iw dev "${IFACE}" set type "${mode}" || return 1 + _up +} + +iw_get_type() +{ + LC_ALL=C iw dev "${IFACE}" info | \ + sed -n -e 's/^'"$1"' *\([^ ]* [^ ]*\).*/\1/p' +} + +iw_report() +{ + local mac= m="connected to" + local ssid="$(_get_ssid)" + local wep_status="(WEP DISABLED)" + local key="$(iw_get_wep_key)" + if [ -n "${key}" -a "${key}" != "off" ] ; then + wep_status="(WEP ENABLED)" + fi + local channel="$(iw_get_channel)" + [ -n "${channel}" ] && channel="on channel ${channel} " + local mode="$(iw_get_mode)" + mac="$(_get_ap_mac_address)" + [ -n "${mac}" ] && mac=" at ${mac}" + + eindent + einfo "${IFACE} ${m} SSID \"${SSID}\"${mac}" + einfo "in ${mode} mode ${channel}${wep_status}" + eoutdent +} + +iw_get_wep_key() +{ + local mac="$1" key= format_key= + [ -n "${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 + format_key=${key#s:} + if [ "${key}" = "${format_key}" ] ; then + # Hex key since it does not start with s: + key="d:0:${format_key}" + else + key="0:${format_key}" + fi + set -- ${key} + echo "${key}" + fi +} + +iw_user_config() +{ + local conf= var=${SSIDVAR} config= + [ -z "${var}" ] && var=${IFVAR} + + config="$(_get_array "iw_${var}")" + local IFS="$__IFS" + for conf in ${config}; do + unset IFS + if ! eval iw dev "${IFACE}" "${conf}"; then + ewarn "${IFACE} does not support the following configuration commands" + ewarn " ${conf}" + fi + done + unset IFS +} + +iw_setup_adhoc() +{ + 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=$(iw_get_wep_key) + + iw_set_mode "ibss" + + eval channel=\$channel_${SSIDVAR} + [ -z "${channel}" ] && eval channel=\$channel_${IFVAR} + # Convert channel numbers into MHz for iw + # 5MHz increments starting with 2412MHz + # We default the channel to 3 (2422MHz) + channel=$(expr \( \( "${channel:-3}" - 1 \) \* 5 \) \+ 2412) + if [ -z "${key}" -o "${key}" = "off" ]; then + iw dev "${IFACE}" ibss join "${SSID}" "${channel}" || return 1 + else + iw dev "${IFACE}" ibss join "${SSID}" "${channel}" \ + key "${key}"|| return 1 + fi + + # Finally apply the user Config + iw_user_config + + iw_report + return 0 +} + +iw_wait_for_association() +{ + local timeout= i=0 + eval timeout=\$associate_timeout_${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 + local station_mac=$(iw dev "${IFACE}" station dump \ + | sed -n -e 's/^Station \([0-9a-f:]*\).*/\1/p') + # Double check we have an ssid and a non-zero + # mac address. This is mainly for buggy + # prism54 drivers that always set their + # carrier on or buggy madwifi drivers that + # sometimes have carrier on and ssid set + # without being associated. :/ + [ -n "$(iw dev "${IFACE}" info |grep ssid)" ] && [ "${station_mac}" != "00:00:00:00:00:00" ] && return 0 + fi + else + local atest= + eval atest=\$associate_test_${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 += 1 )) + [ ${i} -ge ${timeout} ] && return 1 + done + return 1 +} + +iw_associate() +{ + local mode="${1:-managed}" mac="$2" wep_required="$3" + local freq="$4" chan="$5" + local w="(WEP Disabled)" key= + + if [ "${wep_required}" = "WPA" ]; then + ewarn "\"${SSID}\" uses WPA, please use wpa_supplicant for this SSID" + return 1 + fi + + iw_set_mode "${mode}" + + SSIDVAR=$(shell_var "${SSID}") + key="$(iw_get_wep_key "${mac}")" + [ -z "${key}" ] && key=off + if [ "${wep_required}" = "on" -a "${key}" = "off" ]; then + ewarn "WEP key is not set for \"${SSID}\"" + return 1 + fi + if [ "${wep_required}" = "off" -a "${key}" != "off" ]; then + key="off" + ewarn "\"${SSID}\" is not WEP enabled" + fi + + if [ -n "${key}" -a "${key}" != "off" ]; then + if ! iw dev "${IFACE}" connect "${SSID}" keys "${key}" ; then + ewarn "${IFACE} does not support setting keys" + ewarn "or the parameter \"mac_key_${SSIDVAR}\" or \"key_${SSIDVAR}\" is incorrect" + return 1 + fi + w="(WEP Enabled)" + fi + if ! iw dev "${IFACE}" connect "${SSID}" ; then + ewarn "${IFACE} does not support setting SSID to \"${SSID}\"" + fi + + # Only use channel or frequency + if [ -n "${chan}" ]; then + iw dev "${IFACE}" set channel "${chan}" + elif [ -n "${freq}" ]; then + iw dev "${IFACE}" set freq "${freq}" + fi + + # Finally apply the user Config + iw_user_config + + ebegin "Connecting to \"${SSID}\" in ${mode} mode ${w}" + + if type preassociate >/dev/null 2>&1; then + veinfo "Running preassociate function" + veindent + ( preassociate ) + local e=$? + veoutdent + if [ ${e} -eq 0 ]; then + veend 1 "preassociate \"${SSID}\" on ${IFACE} failed" + return 1 + fi + fi + + if ! iw_wait_for_association; then + eend 1 + return 1 + fi + eend 0 + + iw_report + + if type postassociate >/dev/null 2>&1; then + veinfo "Running postassociate function" + veindent + ( postassociate ) + veoutdent + fi + + return 0 +} + +iw_scan() +{ + local x= i=0 scan= + einfo "Scanning for access points" + eindent + + # Sleep if required + eval x=\$sleep_scan_${IFVAR} + [ -n "${x}" ] && sleep "${x}" + + while [ ${i} -lt 3 ]; do + local scan="${scan}${scan:+ }$(LC_ALL=C iw dev "${IFACE}" scan 2>/dev/null | sed -e "s/'/'\\\\''/g" -e "s/$/'/g" -e "s/^/'/g")" + # If this is the first pass and txpower as off and we have no + # results then we need to wait for at least 2 seconds whilst + # the interface does an initial scan. + if [ "${i}" = "0" -a "${txpowerwasoff}" = "0" ]; then + case "${scan}" in + "'${IFACE} "*"No scan results"*) + sleep 2 + txpowerwasoff=1 + continue + ;; + esac + fi + : $(( i += 1 )) + done + + if [ -z "${scan}" ]; then + ewarn "${IFACE} does not support scanning" + eoutdent + eval x=\$adhoc_ssid_${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/net" + 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_${IFVAR}=\"any\"" + eerror "or configure defaulting to Ad-Hoc when Managed fails" + eerror " adhoc_ssid_${IFVAR}=\"WLAN\"" + eerror "or hardcode the SSID against the interface (not recommended)" + eerror " ssid_${IFVAR}=\"SSID\"" + return 1 + fi + + APS=-1 + eval set -- ${scan} + for line; do + case "${line}" in + BSS*) + x="${line#* }" + : $(( APS += 1 )) + eval MAC_${APS}="\""$(echo "${x%(*}" | tr '[:lower:]' '[:upper:]')"\"" + eval QUALITY_${APS}=0 + ;; + *SSID:*) + x=${line#*: } + 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 + ;; + *WEP*) + eval ENC_${APS}=on + ;; + *WPA*) + eval ENC_${APS}=WPA + ;; + *"DS Parameter set: channel"*) + x=${line#*: channel} + x=${x%% *} + eval CHAN_${APS}=\$x + ;; + *signal*) + x=${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} + # Lower values are better signal + if [ -n "${b}" -a "${a}" -gt "${b}" ]; then + for x in MAC SSID MODE CHAN QUALITY ENC; do + eval t=\$${x}_${i} + eval ${x}_${i}=\$${x}_${k} + eval ${x}_${k}=\$t + done + fi + : $(( k += 1 )) + done + : $(( 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_${k} + local u=${k} + # We need to split this into two tests, otherwise bash errors + [ -n "${a}" -a -n "${b}" ] && [ "${a}" -lt "${b}" ] && u=${i} + unset MAC_${u} SSID_${u} MODE_${u} CHAN_${u} QUALITY_${u} ENC_${u} + fi + : $(( k += 1 )) + done + : $(( i += 1 )) + done + + local i=0 e= m= s= + + while [ ${i} -le ${APS} ]; do + eval x=\$MAC_${i} + if [ -z "${x}" ]; then + : $(( i += 1 )) + continue + fi + + eval m=\$MODE_${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 set -- $(_flatten_array "blacklist_aps_${IFVAR}") + [ $# = 0 ] && eval set -- $(_flatten_array "blacklist_aps") + for x; do + if [ "${x}" = "${s}" ]; then + ewarn "${s} has been blacklisted - not connecting" + unset SSID_${i} MAC_${i} ${MODE}_${i} CHAN_${i} QUALITY_${i} ENC_${i} + fi + done + : $(( i += 1 )) + done + eoutdent +} + +iw_force_preferred() +{ + eval set -- $(_flatten_array "preferred_aps_${IFVAR}") + [ $# = 0 ] && eval set -- $(_flatten_array "preferred_aps") + [ $# = 0 ] && return 1 + + ewarn "Trying to force preferred in case they are hidden" + for ssid; 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 += 1 )) + done + if ! ${found_AP}; then + SSID=${ssid} + iw_associate && return 0 + fi + done + + ewarn "Failed to associate with any preferred access points on ${IFACE}" + return 1 +} + +iw_connect_preferred() +{ + local ssid= i= mode= mac= enc= freq= chan= + eval set -- $(_flatten_array "preferred_aps_${IFVAR}") + [ $# = 0 ] && eval set -- $(_flatten_array "preferred_aps") + + for ssid; do + unset IFS + i=0 + while [ ${i} -le ${APS} ]; do + eval e=\$SSID_${i} + if [ "${e}" = "${ssid}" ]; then + SSID=${e} + eval mode=\$MODE_${i} + eval mac=\$MAC_${i} + eval enc=\$ENC_${i} + eval freq=\$FREQ_${i} + eval chan=\$CHAN_${i} + iw_associate "${mode}" "${mac}" "${enc}" "${freq}" \ + "${chan}" && return 0 + fi + : $(( i += 1 )) + done + done + + return 1 +} + +iw_connect_not_preferred() +{ + local ssid= i=0 mode= mac= enc= freq= chan= pref=false + + while [ ${i} -le ${APS} ]; do + eval e=\$SSID_${i} + if [ -n "${e}" ]; then + eval set -- $(_flatten_array "preferred_aps_${IFVAR}") + [ $# = 0 ] && eval set -- $(_flatten_array "preferred_aps") + for ssid; do + if [ "${e}" = "${ssid}" ]; 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_${i} + iw_associate "${mode}" "${mac}" "${enc}" "${freq}" \ + "${chan}" && return 0 + fi + fi + : $(( i += 1 )) + done + + return 1 +} + +iw_defaults() +{ + # Turn on the radio + iw dev "${IFACE}" set txpower auto 2>/dev/null + + iw dev "${IFACE}" disconnect 2>/dev/null + iw dev "${IFACE}" ibss leave 2>/dev/null +} + +iw_configure() +{ + local x= APS=-1 + eval SSID=\$ssid_${IFVAR} + + # Support old variable + [ -z "${SSID}" ] && eval SSID=\$essid_${IFVAR} + + # Setup ad-hoc mode? + eval x=\$mode_${IFVAR} + x=${x:-managed} + + if [ "${x}" = "master" ]; then + eerror "Please use hostapd to make this interface an access point" + return 1 + fi + + if [ "${x}" = "ad-hoc" ]; then + iw_setup_adhoc + return $? + fi + + if [ "${x}" != "managed" ]; then + eerror "Only managed and ad-hoc are supported" + return 1 + fi + + # Has an SSID been forced? + if [ -n "${SSID}" ]; then + iw_set_mode "${x}" + iw_associate && return 0 + [ "${SSID}" = "any" ] && iw_force_preferred && return 0 + + eval SSID=\$adhoc_ssid_${IFVAR} + if [ -n "${SSID}" ]; then + iw_setup_adhoc + return $? + fi + return 1 + fi + + _up + + eval x=\$preferred_aps_${IFVAR} + [ -n "${x}" ] && preferred_aps=${x} + + eval x=\$blacklist_aps_${IFVAR} + [ -n "${x}" ] && blacklist_aps=${x} + + eval x=\$associate_order_${IFVAR} + [ -n "${x}" ] && associate_order=${x} + associate_order=${associate_order:-any} + + if [ "${associate_order}" = "forcepreferredonly" ]; then + iw_force_preferred && return 0 + else + iw_scan || return 1 + iw_connect_preferred && return 0 + [ "${associate_order}" = "forcepreferred" ] || \ + [ "${associate_order}" = "forceany" ] && \ + iw_force_preferred && return 0 + [ "${associate_order}" = "any" ] || \ + [ "${associate_order}" = "forceany" ] && \ + iw_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}" + iw_setup_adhoc + return $? + fi + + eerror "${e}" + return 1 +} + +iw_pre_start() +{ + # We don't configure wireless if we're being called from + # the background + yesno ${IN_BACKGROUND} && return 0 + + service_set_value "SSID" "" + _exists || return 0 + + if ! _is_wireless; then + veinfo "${IFACE} does not appear to be a wireless interface" + return 0 + fi + + # Store the fact that tx-power was off so we default to a longer + # wait if our scan returns nothing + LC_ALL=C iw dev "${IFACE}" info | sed -e '1d' | grep -q "txpower 0.00" + local txpowerwasoff=$? + + iw_defaults + iw_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 ${IFACE}" + + # Are we a proper IEEE device? + # Most devices reutrn IEEE 802.11b/g - but intel cards return IEEE + # in lower case and RA cards return RAPCI or similar + # which really sucks :( + # For the time being, we will test prism54 not loading firmware + # which reports NOT READY! + x="$(iw_get_type)" + if [ "${x}" = "NOT READY!" ]; then + eerror "Looks like there was a problem loading the firmware for ${IFACE}" + return 1 + fi + + if iw_configure; then + service_set_value "SSID" "${SSID}" + return 0 + fi + + eerror "Failed to configure wireless for ${IFACE}" + iw_defaults + iw dev "${IFACE}" set txpower fixed 0 2>/dev/null + unset SSID SSIDVAR + _down + return 1 +} + +iw_post_stop() +{ + yesno ${IN_BACKGROUND} && return 0 + _exists || return 0 + iw_defaults + iw dev "${IFACE}" set txpower fixed 0 2>/dev/null +} |