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# Copyright (c) 2004-2006 Gentoo Foundation
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# Distributed under the terms of the GNU General Public License v2
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# Contributed by Roy Marples (uberlord@gentoo.org)
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# Many thanks to all the people in the Gentoo forums for their ideas and
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# motivation for me to make this and keep on improving it
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# Fix any potential localisation problems
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# Note that LC_ALL trumps LC_anything_else according to locale(7)
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iwconfig() {
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LC_ALL=C /sbin/iwconfig "$@"
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}
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iwgetid() {
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LC_ALL=C /sbin/iwgetid "$@"
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}
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iwlist() {
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LC_ALL=C /sbin/iwlist "$@"
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}
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iwpriv() {
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LC_ALL=C /sbin/iwpriv "$@"
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}
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# void iwconfig_depend(void)
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#
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# Sets up the dependancies for the module
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iwconfig_depend() {
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after plug
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before interface
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provide wireless
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functions interface_up interface_down interface_exists
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}
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# void iwconfig_expose(void)
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#
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# Expose variables that can be configured
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iwconfig_expose() {
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variables essid mode associate_timeout sleep_scan preferred_aps blacklist_aps
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}
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# bool iwconfig_check_installed(void)
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#
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# Returns 1 if wireless-tools is installed, otherwise 0
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iwconfig_check_installed() {
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local report=${1:-false}
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[[ -x /sbin/iwconfig ]] && return 0
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${report} && eerror "For Wireless (802.11) support, emerge net-wireless/wireless-tools"
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if [[ ! -e /proc/net/wireless ]]; then
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installed="1"
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if ${report} ; then
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eerror "iwconfig requires wireless support"
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eerror "(CONFIG_NET_WIRELESS=y) enabled in the kernel"
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fi
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fi
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return 1
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}
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# bool iwconfig_exists(char *interface)
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#
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# Checks to see if wireless extensions are enabled on the interface
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iwconfig_exists() {
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[[ ! -e /proc/net/wireless ]] && return 1
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grep -q "^[ \t]*$1:" /proc/net/wireless
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}
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# char* iwconfig_get_wep_status(char *interface)
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#
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# Echos a string showing whether WEP is enabled or disabled
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# for the given interface
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iwconfig_get_wep_status() {
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local key="$( iwconfig "$1" | grep -i -o "Encryption key:[0-9,A-F]" )"
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local mode status="disabled"
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if [[ -n ${key} ]]; then
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status="enabled"
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mode="$( iwconfig "$1" | sed -n -e 's/^.*Security mode:\(.*[^ ]\).*/\1/p' )"
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[[ -n ${mode} ]] && mode=" - ${mode}"
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fi
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echo "(WEP ${status}${mode})"
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}
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# char* iwconfig_get_essid(char *iface)
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#
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# Gets the current ESSID of the iface
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iwconfig_get_essid() {
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local i essid
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for (( i=0; i<5; i++ )); do
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essid="$( iwgetid --raw "$1" )"
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if [[ -n ${essid} ]] ; then
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echo "${essid}"
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return 0
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fi
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sleep 1
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done
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return 1
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}
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# char* iwconfig_get_ap_mac_address(char *interface)
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#
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# Returns the MAC address of the Access Point
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# the interface is connected to
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iwconfig_get_ap_mac_address() {
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iwgetid --raw --ap "$1"
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}
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# char* iwconfig_get_mode(char *interface)
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#
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# Returns the wireless mode in lower case
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iwconfig_get_mode() {
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iwgetid --mode "$1" | sed -n -e 's/^.*Mode:\(.*\)/\L\1/p'
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}
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# char* iwconfig_get_type(char *interface)
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#
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# Returns the type of interface - the IEEE part
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iwconfig_get_type() {
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iwconfig "$1" | sed -n -e 's/^'"$1"' *\([^ ]* [^ ]*\).*/\1/p'
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}
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# void iwconfig_report(char *interface)
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#
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# Output how our wireless interface has been configured
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iwconfig_report() {
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local iface="$1" essid mac m="connected to"
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essid="$( iwconfig_get_essid "${iface}" )"
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local wep_status="$( iwconfig_get_wep_status "${iface}" )"
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local channel="$( iwgetid --raw --channel "${iface}" )"
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[[ -n ${channel} ]] && channel="on channel ${channel} "
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essid="${essid//\\\\/\\\\}"
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local mode="$( iwconfig_get_mode "${iface}" )"
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if [[ ${mode} == "master" ]]; then
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m="configured as"
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else
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mac="$( iwconfig_get_ap_mac_address "${iface}" )"
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[[ -n ${mac} ]] && mac=" at ${mac}"
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fi
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eindent
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einfo "${iface} ${m} ESSID \"${essid}\"${mac}"
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einfo "in ${mode} mode ${channel}${wep_status}"
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eoutdent
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}
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# char* iwconfig_get_wep_key(char *mac_address)
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#
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# Returns the configured WEP key for the given mac address
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# or the given ESSID. The mac address setting takes precendence
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iwconfig_get_wep_key() {
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local mac="$1" key
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key="mac_key_${mac//:/}"
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[[ -z ${!key} ]] && key="key_${ESSIDVAR}"
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echo "${!key:-off}"
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}
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# void iwconfig_user_config(char *iface, char *ifvar)
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#
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# Applies the user configuration to the interface
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iwconfig_user_config() {
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local iface="$1" conf aconf ifvar="$2"
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[[ -z ${ifvar} ]] && ifvar="$( bash_variable "$1" )"
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# Apply the user configuration
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conf="iwconfig_${ifvar}"
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if [[ -n ${!conf} ]]; then
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aconf=( "${!conf}" )
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for conf in "${aconf[@]}" ; do
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if ! iwconfig "${iface}" ${conf} ; then
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ewarn "${iface} does not support the following configuration commands"
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ewarn " ${conf}"
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fi
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done
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fi
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conf="iwpriv_${ifvar}[@]"
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if [[ -n ${!conf} ]]; then
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aconf=( "${!conf}" )
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for conf in "${aconf[@]}" ; do
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if ! iwpriv "${iface}" ${conf} ; then
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ewarn "${iface} does not support the following private ioctls"
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ewarn " ${conf}"
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fi
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done
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fi
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}
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# bool iwconfig_setup_specific(char *iface)
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#
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# Sets up our wireless interface to operate in ad-hoc or master mode
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iwconfig_setup_specific() {
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local iface="$1" mode="$2" channel key dessid
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local ifvar="$( bash_variable "$1" )"
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if [[ -z ${ESSID} ]]; then
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eerror "${iface} requires an ESSID to be set to operate in ${mode} mode"
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eerror "adjust the essid_${iface} setting in /etc/conf.d/wireless"
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return 1
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fi
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dessid="${ESSID//\\\\/\\\\}"
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ESSIDVAR="$( bash_variable "${ESSID}" )"
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key="$( iwconfig_get_wep_key )"
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# We only change the mode if it's not the same
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local cur_mode="$( iwconfig_get_mode "${iface}" )"
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if [[ ${cur_mode} != "${mode}" ]]; then
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if ! iwconfig "${iface}" mode "${mode}" ; then
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eerror "${iface} does not support setting the mode to \"${mode}\""
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return 1
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fi
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fi
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channel="channel_${ifvar}"
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# We default the channel to 3
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channel="${!channel:-3}"
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if ! iwconfig "${iface}" channel "${channel}" ; then
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ewarn "${iface} does not support setting the channel to \"${channel}\""
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return 1
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fi
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# Now set the key
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if ! iwconfig "${iface}" key ${key} ; then
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if [[ ${key} != "off" ]]; then
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ewarn "${iface} does not support setting keys"
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ewarn "or the parameter \"mac_key_${ESSIDVAR}\" or \"key_${ESSIDVAR}\" is incorrect"
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fi
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fi
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# Then set the ESSID
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if ! iwconfig "${iface}" essid "${ESSID}" ; then
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eerror "${iface} does not support setting ESSID to \"${dessid}\""
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return 1
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fi
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# Finally apply the user Config
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iwconfig_user_config "${iface}" "${ESSIDVAR}"
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iwconfig_report "${iface}"
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return 0
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}
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# bool iwconfig_associate_mac(char *iface)
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#
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# Returns true if the AP MAC address is valid or not
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iwconfig_associate_mac() {
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# Checks if a MAC address has been assigned
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local mac="$( iwconfig_get_ap_mac_address "$1" )" i
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local -a invalid_macs=(
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"00:00:00:00:00:00"
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"44:44:44:44:44:44"
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"FF:00:00:00:00:00"
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"FF:FF:FF:FF:FF:FF"
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)
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[[ -z ${mac} ]] && return 1
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for i in "${invalid_macs[@]}"; do
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[[ ${mac} == "${i}" ]] && return 1
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done
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return 0
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}
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# bool iwconfig_associate_quality(char *iface)
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#
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# Returns true if the link quality is not 0 or 0.
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iwconfig_associate_quality() {
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local quality="$( \
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sed -n -e 's/^.*'"$1"': *[0-9]* *\([0-9]*\).*/\1/p' \
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/proc/net/wireless
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)"
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[[ ${quality} != "0" ]]
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return "$?"
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}
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# bool iwconfig_test_associated(char *iface)
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#
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# Returns true if the interface has associated with an Access Point
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iwconfig_test_associated() {
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local iface="$1" ttype ifvar="$( bash_variable "$1" )" x
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# Some drivers don't set MAC to a bogus value when assocation is lost/fails
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# whereas they do set link quality to 0
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x="associate_test_${ifvar}"
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ttype="$( echo "${!x:-mac}" | tr '[:upper:]' '[:lower:]' )"
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if [[ ${ttype} != "mac" && ${ttype} != "quality" && ${ttype} != "all" ]]; then
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ewarn " associate_test_${iface} is not set to mac, quality or all"
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ewarn " defaulting to \"mac\""
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test="mac"
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fi
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case "${ttype}" in
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mac) iwconfig_associate_mac "${iface}" && return 0 ;;
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quality) iwconfig_associate_quality "${iface}" && return 0 ;;
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all) iwconfig_associate_mac "${iface}" \
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&& iwconfig_associate_quality "${iface}" && return 0 ;;
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esac
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return 1
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}
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# bool iwconfig_wait_for_association(char *iface)
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#
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# Waits for a configured ammount of time until
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# we are assocaited with an Access Point
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iwconfig_wait_for_association() {
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local iface="$1" i=0 timeout ifvar="$( bash_variable "$1" )"
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timeout="associate_timeout_${ifvar}"
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[[ -z ${!timeout} ]] && timeout="sleep_associate_${ifvar}"
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timeout="${!timeout:-10}"
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[[ ${timeout} == "0" ]] \
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&& vewarn "WARNING: infinite timeout set for association on ${iface}"
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while true; do
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iwconfig_test_associated "${iface}" && return 0
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sleep 1
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[[ ${timeout} == "0" ]] && continue
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(( i++ ))
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[[ ${i} == "${timeout}" || ${i} -gt ${timeout} ]] && break
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done
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return 1
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}
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# bool iwconfig_associate(char *interface, char *mac_address, char *wep_required)
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#
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# Tries to associate the interface with an Access Point
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# If we scanned the Access Point we know if we need WEP to associate or not
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# and if we have a WEP key for the ESSID or not
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# so we can fail gracefully without even trying to connect
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iwconfig_associate() {
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local iface="$1" mode="${2:-managed}"
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local mac="$3" wep_required="$4" w="(WEP Disabled)"
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local dessid="${ESSID//\\\\/\\\\}" key
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if ! iwconfig "${iface}" mode "${mode}" ; then
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eerror "Unable to change mode to ${mode}"
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return 1
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fi
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if [[ ${ESSID} == "any" ]]; then
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iwconfig "${iface}" ap any 2>/dev/null
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dessid="any"
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unset ESSIDVAR
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else
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ESSIDVAR="$( bash_variable "${ESSID}" )"
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key="$( iwconfig_get_wep_key "${mac}" )"
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if [[ ${wep_required} == "on" && ${key} == "off" ]]; then
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ewarn "WEP key is not set for \"${dessid}\" - not connecting"
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return 1
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fi
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if [[ ${wep_required} == "off" && ${key} != "off" ]]; then
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key="off"
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ewarn "\"${dessid}\" is not WEP enabled - ignoring setting"
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fi
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if ! iwconfig "${iface}" key ${key} ; then
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if [[ ${key} != "off" ]]; then
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ewarn "${iface} does not support setting keys"
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ewarn "or the parameter \"mac_key_${ESSIDVAR}\" or \"key_${ESSIDVAR}\" is incorrect"
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return 1
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fi
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fi
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[[ ${key} != "off" ]] && w="$( iwconfig_get_wep_status "${iface}" )"
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fi
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if ! iwconfig "${iface}" essid "${ESSID}" ; then
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if [[ ${ESSID} != "any" ]]; then
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ewarn "${iface} does not support setting ESSID to \"${dessid}\""
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fi
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fi
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# Finally apply the user Config
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iwconfig_user_config "${iface}" "${ESSIDVAR}"
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vebegin "Connecting to \"${dessid}\" in ${mode} mode ${w}"
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if [[ ${ESSID} != "any" ]] && is_function preassociate ; then
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veinfo "Running preassociate function"
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| 383 |
eindent
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| 384 |
( preassociate "${iface}" )
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| 385 |
e="$?"
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eoutdent
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| 387 |
if [[ ${e} != 0 ]]; then
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veend 1 "preassociate \"${dessid}\" on ${iface} failed"
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return 1
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fi
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fi
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| 392 |
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if ! iwconfig_wait_for_association "${iface}" ; then
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veend 1
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return 1
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fi
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veend 0
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| 398 |
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| 399 |
if [[ ${ESSID} == "any" ]]; then
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| 400 |
ESSID="$( iwconfig_get_essid "${iface}" )"
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| 401 |
iwconfig_associate "${iface}"
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| 402 |
return $?
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| 403 |
fi
|
| 404 |
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| 405 |
iwconfig_report "${iface}"
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| 406 |
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| 407 |
if is_function postassociate ; then
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| 408 |
veinfo "Running postassociate function"
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| 409 |
eindent
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| 410 |
( postassociate "${iface}" )
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| 411 |
eoutdent
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| 412 |
fi
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| 413 |
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| 414 |
return 0
|
| 415 |
}
|
| 416 |
|
| 417 |
# bool iwconfig_scan(char *iface)
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| 418 |
#
|
| 419 |
# Fills 3 arrays with information from a wireless scan
|
| 420 |
iwconfig_scan() {
|
| 421 |
local iface="$1" mode x ifvar="$( bash_variable "$1" )"
|
| 422 |
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| 423 |
# First, we may need to change mode to scan in
|
| 424 |
x="scan_mode_${ifvar}"
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| 425 |
mode="$( echo "${!x}" | tr '[:upper:]' '[:lower:]' )"
|
| 426 |
if [[ -n ${mode} ]]; then
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| 427 |
if ! iwconfig "${iface}" mode "${mode}" ; then
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| 428 |
ewarn "${iface} does not support setting the mode to \"${mode}\""
|
| 429 |
fi
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| 430 |
fi
|
| 431 |
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| 432 |
# Next we set any private driver ioctls needed
|
| 433 |
x="iwpriv_scan_pre_${ifvar}"
|
| 434 |
if [[ -n ${!x} ]]; then
|
| 435 |
if ! eval iwpriv "${iface}" "${!x}" ; then
|
| 436 |
ewarn "${iface} does not support the following private ioctls" \
|
| 437 |
ewarn " ${!x}"
|
| 438 |
fi
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| 439 |
fi
|
| 440 |
|
| 441 |
# Set the essid to any. This is required for scanning
|
| 442 |
iwconfig "${iface}" essid any
|
| 443 |
|
| 444 |
veinfo "Scanning for access points"
|
| 445 |
|
| 446 |
# Sleep if required
|
| 447 |
x="sleep_scan_${ifvar}"
|
| 448 |
[[ -z ${!x} || ${!x} -gt 0 ]] && sleep "${!x:-1}"
|
| 449 |
|
| 450 |
local error=true i=-1 line
|
| 451 |
local -a mac essid enc qual mode
|
| 452 |
|
| 453 |
while read line; do
|
| 454 |
error=false
|
| 455 |
case "${line}" in
|
| 456 |
*Address:*)
|
| 457 |
(( i++ ))
|
| 458 |
mac[i]="$( echo "${line#*: }" | tr '[:lower:]' '[:upper:]' )"
|
| 459 |
;;
|
| 460 |
*ESSID:*)
|
| 461 |
essid[i]="${line#*\"}"
|
| 462 |
essid[i]="${essid[i]%*\"}"
|
| 463 |
;;
|
| 464 |
*Mode:*)
|
| 465 |
mode[i]="$(echo "${line#*:}" | tr '[:upper:]' '[:lower:]' )"
|
| 466 |
[[ ${mode[i]} == "master" ]] && mode[i]="managed"
|
| 467 |
;;
|
| 468 |
*'Encryption key:'*)
|
| 469 |
enc[i]="${line#*:}"
|
| 470 |
;;
|
| 471 |
*Quality*)
|
| 472 |
qual[i]="${line#*:}"
|
| 473 |
qual[i]="${qual[i]%/*}"
|
| 474 |
qual[i]="${qual[i]//[![:digit:]]/}"
|
| 475 |
qual[i]="${qual[i]:-0}"
|
| 476 |
;;
|
| 477 |
esac
|
| 478 |
done < <( iwlist "${iface}" scan 2>/dev/null )
|
| 479 |
|
| 480 |
if ${error}; then
|
| 481 |
ewarn "${iface} does not support scanning"
|
| 482 |
x="adhoc_essid_${ifvar}"
|
| 483 |
[[ -n ${!x} ]] && return 0
|
| 484 |
if [[ -n ${preferred_aps} ]]; then
|
| 485 |
[[ ${associate_order} == "forcepreferred" \
|
| 486 |
|| ${associate_order} == "forcepreferredonly" ]] && return 0
|
| 487 |
fi
|
| 488 |
eerror "You either need to set a preferred_aps list in /etc/conf.d/wireless"
|
| 489 |
eerror " preferred_aps=( \"ESSID1\" \"ESSID2\" )"
|
| 490 |
eerror " and set associate_order_${iface}=\"forcepreferred\""
|
| 491 |
eerror " or set associate_order_${iface}=\"forcepreferredonly\""
|
| 492 |
eerror "or hardcode the ESSID to \"any\" and let the driver find an Access Point"
|
| 493 |
eerror " essid_${iface}=\"any\""
|
| 494 |
eerror "or configure defaulting to Ad-Hoc when Managed fails"
|
| 495 |
eerror " adhoc_essid_${iface}=\"WLAN\""
|
| 496 |
eerror "or hardcode the ESSID against the interface (not recommended)"
|
| 497 |
eerror " essid_${iface}=\"ESSID\""
|
| 498 |
return 1
|
| 499 |
fi
|
| 500 |
|
| 501 |
# We may need to unset the previous private driver ioctls
|
| 502 |
x="iwpriv_scan_post_${ifvar}"
|
| 503 |
if [[ -n ${!x} ]]; then
|
| 504 |
if ! eval iwpriv "${iface}" "${!x}" ; then
|
| 505 |
ewarn "${iface} does not support the following private ioctls" \
|
| 506 |
ewarn " ${!x}"
|
| 507 |
fi
|
| 508 |
fi
|
| 509 |
|
| 510 |
# Change back mode if needed
|
| 511 |
x="mode_${ifvar}"
|
| 512 |
x="$( echo "${!x:-managed}" | tr '[:upper:]' '[:lower:]' )"
|
| 513 |
[[ ${mode} != "${x}" ]] && iwconfig "${iface}" mode "${x}"
|
| 514 |
|
| 515 |
# Strip any duplicates
|
| 516 |
local i j x="${#mac[@]}" y
|
| 517 |
for (( i=0; i<x-1; i++ )) ; do
|
| 518 |
[[ -z ${mac[i]} ]] && continue
|
| 519 |
for (( j=i+1; j<x; j++)) ; do
|
| 520 |
if [[ ${mac[i]} == "${mac[j]}" ]] ; then
|
| 521 |
if [[ ${qual[i]} -gt ${qual[j]} ]] ; then
|
| 522 |
y="${j}"
|
| 523 |
else
|
| 524 |
y="${j}"
|
| 525 |
fi
|
| 526 |
unset mac[y]
|
| 527 |
unset qual[y]
|
| 528 |
unset essid[y]
|
| 529 |
unset mode[y]
|
| 530 |
unset enc[y]
|
| 531 |
fi
|
| 532 |
done
|
| 533 |
done
|
| 534 |
mac=( "${mac[@]}" )
|
| 535 |
qual=( "${qual[@]}" )
|
| 536 |
essid=( "${essid[@]}" )
|
| 537 |
mode=( "${mode[@]}" )
|
| 538 |
enc=( "${enc[@]}" )
|
| 539 |
|
| 540 |
for (( i=0; i<${#mac[@]}; i++ )); do
|
| 541 |
# Don't like ad-hoc nodes by default
|
| 542 |
[[ ${mode[i]} == "ad-hoc" ]] && (( qual[i]-=10000 ))
|
| 543 |
sortline="${sortline}${qual[i]} ${i}\n"
|
| 544 |
done
|
| 545 |
|
| 546 |
sortline=( $( echo -e "${sortline}" | sort -nr ) )
|
| 547 |
|
| 548 |
for (( i=0; i<${#mac[@]}; i++ )); do
|
| 549 |
(( x=(i * 2) + 1 ))
|
| 550 |
mac_APs[i]="${mac[${sortline[x]}]}"
|
| 551 |
essid_APs[i]="${essid[${sortline[x]}]}"
|
| 552 |
mode_APs[i]="${mode[${sortline[x]}]}"
|
| 553 |
enc_APs[i]="${enc[${sortline[x]}]}"
|
| 554 |
done
|
| 555 |
|
| 556 |
return 0
|
| 557 |
}
|
| 558 |
|
| 559 |
# void iwconfig_scan_report(void)
|
| 560 |
#
|
| 561 |
# Report the results of the scan and re-map any ESSIDs if they
|
| 562 |
# have been configured for the MAC address found
|
| 563 |
iwconfig_scan_report() {
|
| 564 |
local i k m remove
|
| 565 |
local -a u
|
| 566 |
|
| 567 |
[[ -z ${mac_APs} ]] && ewarn " no access points found"
|
| 568 |
|
| 569 |
# We need to do the for loop like this so we can
|
| 570 |
# dynamically remove from the array
|
| 571 |
eindent
|
| 572 |
for ((i=0; i<${#mac_APs[@]}; i++)); do
|
| 573 |
k="(${mode_APs[i]}"
|
| 574 |
[[ ${enc_APs[i]} != "off" ]] && k="${k}, encrypted"
|
| 575 |
k="${k})"
|
| 576 |
|
| 577 |
if [[ -z ${essid_APs[i]} ]]; then
|
| 578 |
veinfo "Found ${mac_APs[i]} ${k}"
|
| 579 |
else
|
| 580 |
veinfo "Found \"${essid_APs[i]//\\\\/\\\\}\" at ${mac_APs[i]} ${k}"
|
| 581 |
fi
|
| 582 |
|
| 583 |
eindent
|
| 584 |
|
| 585 |
m="mac_essid_${mac_APs[i]//:/}"
|
| 586 |
if [[ -n ${!m} ]]; then
|
| 587 |
essid_APs[i]="${!m}"
|
| 588 |
veinfo "mapping to \"${!m//\\\\/\\\\}\""
|
| 589 |
fi
|
| 590 |
|
| 591 |
remove=false
|
| 592 |
# If we don't know the essid then we cannot connect to them
|
| 593 |
# so we remove them from our array
|
| 594 |
if [[ -z ${essid_APs[i]} ]]; then
|
| 595 |
remove=true
|
| 596 |
else
|
| 597 |
for k in "${blacklist_aps[@]}"; do
|
| 598 |
if [[ ${k} == "${essid_APs[i]}" ]]; then
|
| 599 |
vewarn "\"${k//\\\\/\\\\}\" has been blacklisted - not connecting"
|
| 600 |
remove=true
|
| 601 |
break
|
| 602 |
fi
|
| 603 |
done
|
| 604 |
fi
|
| 605 |
|
| 606 |
eoutdent
|
| 607 |
|
| 608 |
${remove} && u=( "${u[@]}" "${i}" )
|
| 609 |
done
|
| 610 |
|
| 611 |
eoutdent
|
| 612 |
|
| 613 |
# Now we remove any duplicates
|
| 614 |
for ((i=0; i < ${#essid_APs[@]} - 1; i++)); do
|
| 615 |
for ((j=${i} + 1; j <${#essid_APs[@]}; j++)); do
|
| 616 |
[[ ${essid_APs[i]} == "${essid_APs[j]}" ]] && u=( "${u[@]}" "${j}" )
|
| 617 |
done
|
| 618 |
done
|
| 619 |
|
| 620 |
for i in ${u[@]}; do
|
| 621 |
unset essid_APs[i]
|
| 622 |
unset mode_APs[i]
|
| 623 |
unset mac_APs[i]
|
| 624 |
unset enc_APs[i]
|
| 625 |
done
|
| 626 |
|
| 627 |
# We need to squash our arrays so indexes work again
|
| 628 |
essid_APs=( "${essid_APs[@]}" )
|
| 629 |
mode_APs=( "${mode_APs[@]}" )
|
| 630 |
mac_APs=( "${mac_APs[@]}" )
|
| 631 |
enc_APs=( "${enc_APs[@]}" )
|
| 632 |
}
|
| 633 |
|
| 634 |
# bool iwconfig_force_preferred(char *iface)
|
| 635 |
#
|
| 636 |
# Forces the preferred_aps list to associate in order
|
| 637 |
# but only if they were not picked up by our scan
|
| 638 |
iwconfig_force_preferred() {
|
| 639 |
local iface=$1 essid i
|
| 640 |
|
| 641 |
[[ -z ${preferred_aps} ]] && return 1
|
| 642 |
|
| 643 |
ewarn "Trying to force preferred in case they are hidden"
|
| 644 |
for essid in "${preferred_aps[@]}"; do
|
| 645 |
local found_AP=false
|
| 646 |
for ((i = 0; i < ${#mac_APs[@]}; i++)); do
|
| 647 |
if [[ ${essid} == "${essid_APs[i]}" ]]; then
|
| 648 |
found_AP=true
|
| 649 |
break
|
| 650 |
fi
|
| 651 |
done
|
| 652 |
if ! ${found_AP} ; then
|
| 653 |
ESSID="${essid}"
|
| 654 |
iwconfig_associate "${iface}" && return 0
|
| 655 |
fi
|
| 656 |
done
|
| 657 |
|
| 658 |
ewarn "Failed to associate with any preferred access points on ${iface}"
|
| 659 |
return 1
|
| 660 |
}
|
| 661 |
|
| 662 |
# bool iwconfig_connect_preferred(char *iface)
|
| 663 |
#
|
| 664 |
# Connects to preferred_aps in order if they were picked up
|
| 665 |
# by our scan
|
| 666 |
iwconfig_connect_preferred() {
|
| 667 |
local iface="$1" essid i
|
| 668 |
|
| 669 |
for essid in "${preferred_aps[@]}"; do
|
| 670 |
for ((i=0; i<${#essid_APs[@]}; i++)); do
|
| 671 |
if [[ ${essid} == "${essid_APs[i]}" ]]; then
|
| 672 |
ESSID="${essid}"
|
| 673 |
iwconfig_associate "${iface}" "${mode_APs[i]}" "${mac_APs[i]}" \
|
| 674 |
"${enc_APs[i]}" && return 0
|
| 675 |
break
|
| 676 |
fi
|
| 677 |
done
|
| 678 |
done
|
| 679 |
|
| 680 |
return 1
|
| 681 |
}
|
| 682 |
|
| 683 |
# bool iwconfig_connect_not_preferred(char *iface)
|
| 684 |
#
|
| 685 |
# Connects to any AP's found that are not in
|
| 686 |
# our preferred list
|
| 687 |
iwconfig_connect_not_preferred() {
|
| 688 |
local iface=$1 i ap has_preferred
|
| 689 |
|
| 690 |
for ((i=0; i<${#mac_APs[@]}; i++)); do
|
| 691 |
has_preferred=false
|
| 692 |
for ap in "${preferred_aps[@]}"; do
|
| 693 |
if [[ ${ap} == "${essid_APs[i]}" ]]; then
|
| 694 |
has_preferred=true
|
| 695 |
break
|
| 696 |
fi
|
| 697 |
done
|
| 698 |
if ! ${has_preferred} ; then
|
| 699 |
ESSID="${essid_APs[i]}"
|
| 700 |
iwconfig_associate "${iface}" "${mode_APs[i]}" "${mac_APs[i]}" \
|
| 701 |
"${enc_APs[i]}" && return 0
|
| 702 |
fi
|
| 703 |
done
|
| 704 |
|
| 705 |
return 1
|
| 706 |
}
|
| 707 |
|
| 708 |
# void iwconfig_defaults(char *iface)
|
| 709 |
#
|
| 710 |
# Apply some sane defaults to the wireless interface
|
| 711 |
# incase the user already applied some changes
|
| 712 |
iwconfig_defaults() {
|
| 713 |
local iface="$1"
|
| 714 |
|
| 715 |
# Set some defaults
|
| 716 |
iwconfig "${iface}" rate auto 2>/dev/null
|
| 717 |
iwconfig "${iface}" rts auto 2>/dev/null
|
| 718 |
iwconfig "${iface}" frag auto 2>/dev/null
|
| 719 |
iwconfig "${iface}" txpower auto 2>/dev/null
|
| 720 |
|
| 721 |
}
|
| 722 |
|
| 723 |
# void iwconfig_strip_associated(char *iface)
|
| 724 |
#
|
| 725 |
# We check to see which ifaces have associated AP's except for the iface
|
| 726 |
# given and remove those AP's from the scan list
|
| 727 |
# We also remove from the preferred list
|
| 728 |
iwconfig_strip_associated() {
|
| 729 |
local iface="$1" e a j
|
| 730 |
local essid="$( iwconfig_get_essid "${iface}" )"
|
| 731 |
local -a ifaces=( $( iwconfig 2>/dev/null | grep -o "^\w*" ) )
|
| 732 |
|
| 733 |
for i in "${ifaces[@]}"; do
|
| 734 |
[[ ${i} == ${iface} ]] && continue
|
| 735 |
interface_is_up "${i}" || continue
|
| 736 |
iwconfig_test_associated "${i}" || continue
|
| 737 |
e="$( iwconfig_get_essid "${i}" )"
|
| 738 |
local -a u=()
|
| 739 |
for ((j=0; j<${#mac_APs[@]}; j++)); do
|
| 740 |
if [[ ${essid_APs[j]} == "${e}" ]]; then
|
| 741 |
ewarn "${e} has already been associated with ${i}"
|
| 742 |
unset essid_APs[j]
|
| 743 |
unset mode_Aps[j]
|
| 744 |
unset mac_APs[j]
|
| 745 |
unset enc_APs[j]
|
| 746 |
# We need to squash our arrays so that indexes work
|
| 747 |
essid_APs=( "${essid_APs[@]}" )
|
| 748 |
mode_APs=( "${mode_APs[@]}" )
|
| 749 |
mac_APs=( "${mac_APs[@]}" )
|
| 750 |
enc_APs=( "${enc_APs[@]}" )
|
| 751 |
break
|
| 752 |
fi
|
| 753 |
done
|
| 754 |
for ((j=0; j<${#preferred_aps[@]}; j++)); do
|
| 755 |
if [[ ${preferred_aps[j]} == "${e}" ]]; then
|
| 756 |
unset preferred_aps[j]
|
| 757 |
preferred_aps=( "${preferred_aps[@]}" )
|
| 758 |
break
|
| 759 |
fi
|
| 760 |
done
|
| 761 |
done
|
| 762 |
}
|
| 763 |
|
| 764 |
# bool iwconfig_configure(char *iface)
|
| 765 |
#
|
| 766 |
# The main startup code
|
| 767 |
# First we bring the interface up, apply defaults, apply user configuration
|
| 768 |
# Then we test to see if ad-hoc mode has been requested and branch if needed
|
| 769 |
# Then we scan for access points and try to connect to them in a predetermined order
|
| 770 |
# Once we're connected we show a report and then configure any interface
|
| 771 |
# variables for the ESSID
|
| 772 |
iwconfig_configure() {
|
| 773 |
local iface="$1" test x e ifvar="$( bash_variable "$1" )"
|
| 774 |
local -a essid_APs mac_APs mode_APs enc_APs
|
| 775 |
|
| 776 |
iwconfig_defaults "${iface}"
|
| 777 |
iwconfig_user_config "${iface}"
|
| 778 |
|
| 779 |
ESSID="essid_${ifvar}"
|
| 780 |
ESSID="${!ESSID}"
|
| 781 |
|
| 782 |
# Setup ad-hoc mode?
|
| 783 |
x="mode_${ifvar}"
|
| 784 |
x="$( echo "${!x:-managed}" | tr '[:upper:]' '[:lower:]' )"
|
| 785 |
if [[ ${x} == "ad-hoc" || ${x} == "master" ]]; then
|
| 786 |
iwconfig_setup_specific "${iface}" "${x}"
|
| 787 |
return $?
|
| 788 |
fi
|
| 789 |
|
| 790 |
if [[ ${x} != "managed" && ${x} != "auto" ]]; then
|
| 791 |
eerror "Only managed, ad-hoc, master and auto modes are supported"
|
| 792 |
return 1
|
| 793 |
fi
|
| 794 |
|
| 795 |
# We only change the mode if it's not the same as some drivers
|
| 796 |
# only do managed and throw an error changing to managed
|
| 797 |
local cur_mode="$( iwconfig_get_mode "${iface}" )"
|
| 798 |
if [[ ${cur_mode} != "${x}" ]]; then
|
| 799 |
if ! iwconfig "${iface}" mode "${x}" ; then
|
| 800 |
eerror "${iface} does not support setting the mode to \"${x}\""
|
| 801 |
return 1
|
| 802 |
fi
|
| 803 |
fi
|
| 804 |
|
| 805 |
# These arrays hold the results of our scan
|
| 806 |
local -a mac_APs essid_APs enc_APs
|
| 807 |
|
| 808 |
# Has an ESSID been forced?
|
| 809 |
if [[ -n ${ESSID} ]]; then
|
| 810 |
iwconfig_associate "${iface}" && return 0
|
| 811 |
[[ ${ESSID} == "any" ]] && iwconfig_force_preferred "${iface}" && return 0
|
| 812 |
|
| 813 |
ESSID="adhoc_essid_${ifvar}"
|
| 814 |
ESSID="${!ESSID}"
|
| 815 |
if [[ -n ${ESSID} ]]; then
|
| 816 |
iwconfig_setup_specific "${iface}" ad-hoc
|
| 817 |
return $?
|
| 818 |
fi
|
| 819 |
return 1
|
| 820 |
fi
|
| 821 |
|
| 822 |
# Do we have a preferred Access Point list specific to the interface?
|
| 823 |
x="preferred_aps_${ifvar}[@]"
|
| 824 |
[[ -n ${!x} ]] && preferred_aps=( "${!x}" )
|
| 825 |
|
| 826 |
# Do we have a blacklist Access Point list specific to the interface?
|
| 827 |
x="blacklist_aps_${ifvar}[@]"
|
| 828 |
[[ -n ${!x} ]] && blacklist_aps=( "${!x}" )
|
| 829 |
|
| 830 |
# Are we forcing preferred only?
|
| 831 |
x="associate_order_${ifvar}"
|
| 832 |
[[ -n ${!x} ]] && associate_order="${!x}"
|
| 833 |
associate_order="$(
|
| 834 |
echo "${associate_order:-any}" \
|
| 835 |
| tr '[:upper:]' '[:lower:]'
|
| 836 |
)"
|
| 837 |
|
| 838 |
if [[ ${associate_order} == "forcepreferredonly" ]]; then
|
| 839 |
iwconfig_force_preferred "${iface}" && return 0
|
| 840 |
else
|
| 841 |
iwconfig_scan "${iface}" || return 1
|
| 842 |
iwconfig_scan_report
|
| 843 |
|
| 844 |
# Strip AP's from the list that have already been associated with
|
| 845 |
# other wireless cards in the system if requested
|
| 846 |
x="unique_ap_${ifvar}"
|
| 847 |
[[ -n ${!x} ]] && unique_ap="${!x}"
|
| 848 |
unique_ap="$( echo "${unique_ap:-no}" | tr '[:upper:]' '[:lower:]' )"
|
| 849 |
[[ ${unique_ap} != "no" ]] && iwconfig_strip_associated "${iface}"
|
| 850 |
|
| 851 |
iwconfig_connect_preferred "${iface}" && return 0
|
| 852 |
[[ ${associate_order} == "forcepreferred" \
|
| 853 |
|| ${associate_order} == "forceany" ]] \
|
| 854 |
&& iwconfig_force_preferred "${iface}" && return 0
|
| 855 |
[[ ${associate_order} == "any" || ${associate_order} == "forceany" ]] \
|
| 856 |
&& iwconfig_connect_not_preferred "${iface}" && return 0
|
| 857 |
fi
|
| 858 |
|
| 859 |
e="associate with"
|
| 860 |
[[ -z ${mac_APs} ]] && e="find"
|
| 861 |
[[ ${preferred_only} == "force" || ${preferred_aps} == "forceonly" ]] \
|
| 862 |
&& e="force"
|
| 863 |
e="Couldn't ${e} any access points on ${iface}"
|
| 864 |
|
| 865 |
ESSID="adhoc_essid_${ifvar}"
|
| 866 |
ESSID="${!ESSID}"
|
| 867 |
if [[ -n ${ESSID} ]]; then
|
| 868 |
ewarn "${e}"
|
| 869 |
iwconfig_setup_specific "${iface}" ad-hoc
|
| 870 |
return $?
|
| 871 |
fi
|
| 872 |
|
| 873 |
eerror "${e}"
|
| 874 |
return 1
|
| 875 |
}
|
| 876 |
|
| 877 |
# bool iwconfig_pre_start(char *iface)
|
| 878 |
#
|
| 879 |
# Start entry point
|
| 880 |
# First we check if wireless extensions exist on the interface
|
| 881 |
# If they are then we configue wireless
|
| 882 |
iwconfig_pre_start() {
|
| 883 |
local iface="$1" r=0
|
| 884 |
|
| 885 |
# We don't configure wireless if we're being called from
|
| 886 |
# the background
|
| 887 |
${IN_BACKGROUND} && return 0
|
| 888 |
|
| 889 |
save_options "ESSID" ""
|
| 890 |
interface_exists "${iface}" || return 0
|
| 891 |
|
| 892 |
# We need to bring the interface up, as some cards do not register
|
| 893 |
# in /proc/wireless until they are brought up.
|
| 894 |
interface_up "${iface}"
|
| 895 |
|
| 896 |
if ! iwconfig_exists "${iface}" ; then
|
| 897 |
veinfo "Wireless extensions not found for ${iface}"
|
| 898 |
return 0
|
| 899 |
fi
|
| 900 |
|
| 901 |
# Set the base metric to be 2000
|
| 902 |
metric=2000
|
| 903 |
|
| 904 |
# Check for rf_kill - only ipw supports this at present, but other
|
| 905 |
# cards may in the future.
|
| 906 |
if [[ -e "/sys/class/net/${iface}/device/rf_kill" ]]; then
|
| 907 |
if [[ $( < "/sys/class/net/${iface}/device/rf_kill" ) != 0 ]]; then
|
| 908 |
eerror "Wireless radio has been killed for interface ${iface}"
|
| 909 |
return 1
|
| 910 |
fi
|
| 911 |
fi
|
| 912 |
|
| 913 |
einfo "Configuring wireless network for ${iface}"
|
| 914 |
|
| 915 |
# Are we a proper IEEE device?
|
| 916 |
# Most devices reutrn IEEE 802.11b/g - but intel cards return IEEE in lower case
|
| 917 |
# and RA cards return RAPCI or similar which really sucks :(
|
| 918 |
# For the time being, we will test prism54 not loading firmware which reports
|
| 919 |
# NOT READY!
|
| 920 |
x="$( iwconfig_get_type "${iface}" )"
|
| 921 |
if [[ ${x} == "NOT READY!" ]]; then
|
| 922 |
eerror "Looks like there was a probem loading the firmware for ${iface}"
|
| 923 |
return 1
|
| 924 |
fi
|
| 925 |
|
| 926 |
# Setup IFS incase parent script has modified it
|
| 927 |
local IFS=$' '$'\n'$'\t'
|
| 928 |
|
| 929 |
if iwconfig_configure "${iface}" ; then
|
| 930 |
save_options "ESSID" "${ESSID}"
|
| 931 |
return 0
|
| 932 |
fi
|
| 933 |
|
| 934 |
eerror "Failed to configure wireless for ${iface}"
|
| 935 |
iwconfig_defaults "${iface}"
|
| 936 |
unset ESSID ESSIDVAR
|
| 937 |
interface_down "${iface}"
|
| 938 |
return 1
|
| 939 |
}
|
| 940 |
|
| 941 |
iwconfig_post_stop() {
|
| 942 |
interface_exists "${iface}" || return 0
|
| 943 |
iwconfig_defaults "${iface}"
|
| 944 |
}
|
| 945 |
|
| 946 |
# vim: set ts=4 :
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