99 lines
3.0 KiB
Bash
99 lines
3.0 KiB
Bash
#!/bin/sh
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VERBOSITY=0
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start_stop_wpa_supplicant() {
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BRIDGE_WPA_IFACE="${1}"
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WPA_SUP_BIN="/usr/sbin/wpa_supplicant"
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WPA_SUP_PNAME="wpa_supplicant"
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WPA_SUP_PIDFILE="/var/run/wpa_supplicant.${BRIDGE_WPA_IFACE}.pid"
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WPA_SUP_OPTIONS="-B -P ${WPA_SUP_PIDFILE} -i ${BRIDGE_WPA_IFACE}"
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if [ -z "${IF_BRIDGE_WPA_DRIVER}" ]; then
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echo "${WPA_SUP_PNAME}: missing bridge_wpa_driver property for bridge interface ${IFACE}"
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exit 1
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fi
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case "${MODE}" in
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start)
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if [ "${VERBOSITY}" = "1" ]; then
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echo "${WPA_SUP_PNAME}: ${WPA_SUP_BIN} ${WPA_SUP_OPTIONS} -c ${IF_BRIDGE_WPA_CONF} -D ${IF_BRIDGE_WPA_DRIVER}"
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fi
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start-stop-daemon --start --quiet \
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--name ${WPA_SUP_PNAME} --startas ${WPA_SUP_BIN} --pidfile ${WPA_SUP_PIDFILE} \
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-- ${WPA_SUP_OPTIONS} -c ${IF_BRIDGE_WPA_CONF} -D ${IF_BRIDGE_WPA_DRIVER} -b ${IFACE}
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# Wait for wireless to be ready
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sleep 0.5
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;;
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stop)
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if [ "${VERBOSITY}" = "1" ]; then
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echo "${WPA_SUP_PNAME}: terminating ${WPA_SUP_PNAME} daemon"
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fi
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start-stop-daemon --stop --quiet \
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--name ${WPA_SUP_PNAME} --pidfile ${WPA_SUP_PIDFILE}
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;;
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esac
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}
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# Execute only if the interface has a bridge_ports property (this characterizes bridge interfaces)
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case "$IF_BRIDGE_PORTS" in
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"")
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exit 0
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;;
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none)
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INTERFACES=""
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;;
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*)
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INTERFACES="$IF_BRIDGE_PORTS"
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;;
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esac
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if [ "$MODE" = "start" ] && [ ! -d /sys/class/net/$IFACE ]; then
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# Create the bridge interface using brctl
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brctl addbr $IFACE || exit 1
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# For all the interfaces in bridge ports, attach to the bridge and remove ip
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for port in $INTERFACES; do
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if [ -d "/sys/class/net/${port}/wireless" ] && [ -n "${IF_BRIDGE_WPA_CONF}" ]; then
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# Launch wpa_supplicant with bridge support
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start_stop_wpa_supplicant ${port}
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fi
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# Turn up the interface and include in the bridge
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brctl addif $IFACE $port && ifconfig $port 0.0.0.0 up
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done
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# Setup the bridge (only options supported by busybox)
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[ -n "$IF_BRIDGE_AGEING" ] && brctl setageing $IFACE $IF_BRIDGE_AGEING
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[ -n "$IF_BRIDGE_BRIDGEPRIO" ] && brctl setbridgeprio $IFACE $IF_BRIDGE_BRIDGEPRIO
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[ -n "$IF_BRIDGE_FD" ] && brctl setfd $IFACE $IF_BRIDGE_FD
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[ -n "$IF_BRIDGE_HELLO" ] && brctl sethello $IFACE $IF_BRIDGE_HELLO
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[ -n "$IF_BRIDGE_MAXAGE" ] && brctl setmaxage $IFACE $IF_BRIDGE_MAXAGE
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[ -n "$IF_BRIDGE_PATHCOST" ] && brctl setpathcost $IFACE $IF_BRIDGE_PATHCOST
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[ -n "$IF_BRIDGE_PORTPRIO" ] && brctl setportprio $IFACE $IF_BRIDGE_PORTPRIO
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[ -n "$IF_BRIDGE_STP" ] && brctl stp $IFACE $IF_BRIDGE_STP
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# Activate the bridge
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ifconfig $IFACE 0.0.0.0 up
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elif [ "$MODE" = "stop" ]; then
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# Bring down the interface
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ifconfig $IFACE down || exit 1
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# Remove port interfaces from the bridge
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for port in $INTERFACES; do
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if [ -d "/sys/class/net/${port}/wireless" ] && [ -n "${IF_BRIDGE_WPA_CONF}" ]; then
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# Stop the wpa_supplicant instance for the bridge
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start_stop_wpa_supplicant ${port}
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fi
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ifconfig $port down && brctl delif $IFACE $port
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done
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# Destroy the interface
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brctl delbr $IFACE
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fi
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