--- /dev/null
+#!/bin/sh
+# List of parameters passed through environment
+#* reason -- why this script was called, one of: pre-init connect disconnect
+#* VPNGATEWAY -- vpn gateway address (always present)
+#* TUNDEV -- tunnel device (always present)
+#* INTERNAL_IP4_ADDRESS -- address (always present)
+#* INTERNAL_IP4_MTU -- mtu (often unset)
+#* INTERNAL_IP4_NETMASK -- netmask (often unset)
+#* INTERNAL_IP4_NETMASKLEN -- netmask length (often unset)
+#* INTERNAL_IP4_NETADDR -- address of network (only present if netmask is set)
+#* INTERNAL_IP4_DNS -- list of dns servers
+#* INTERNAL_IP4_NBNS -- list of wins servers
+#* INTERNAL_IP6_ADDRESS -- IPv6 address
+#* INTERNAL_IP6_NETMASK -- IPv6 netmask
+#* INTERNAL_IP6_DNS -- IPv6 list of dns servers
+#* CISCO_DEF_DOMAIN -- default domain name
+#* CISCO_BANNER -- banner from server
+#* CISCO_SPLIT_INC -- number of networks in split-network-list
+#* CISCO_SPLIT_INC_%d_ADDR -- network address
+#* CISCO_SPLIT_INC_%d_MASK -- subnet mask (for example: 255.255.255.0)
+#* CISCO_SPLIT_INC_%d_MASKLEN -- subnet masklen (for example: 24)
+#* CISCO_SPLIT_INC_%d_PROTOCOL -- protocol (often just 0)
+#* CISCO_SPLIT_INC_%d_SPORT -- source port (often just 0)
+#* CISCO_SPLIT_INC_%d_DPORT -- destination port (often just 0)
+#* CISCO_IPV6_SPLIT_INC -- number of networks in IPv6 split-network-list
+#* CISCO_IPV6_SPLIT_INC_%d_ADDR -- IPv6 network address
+#* CISCO_IPV6_SPLIT_INC_$%d_MASKLEN -- IPv6 subnet masklen
+
+HOOKS_DIR=/etc/openconnect
+
+# FIXMEs:
+
+# Section A: route handling
+
+# 1) The 3 values CISCO_SPLIT_INC_%d_PROTOCOL/SPORT/DPORT are currently being ignored
+# In order to use them, we'll probably need os specific solutions
+# * Linux: iptables -t mangle -I PREROUTING <conditions> -j ROUTE --oif $TUNDEV
+# This would be an *alternative* to changing the routes (and thus 2) and 3)
+# shouldn't be relevant at all)
+# 2) There are two different functions to set routes: generic routes and the
+# default route. Why isn't the defaultroute handled via the generic route case?
+# 3) In the split tunnel case, all routes but the default route might get replaced
+# without getting restored later. We should explicitely check and save them just
+# like the defaultroute
+# 4) Replies to a dhcp-server should never be sent into the tunnel
+
+# Section B: Split DNS handling
+
+# 1) We parse CISCO_SPLIT_DNS and use dnsmasq to set it
+
+do_connect() {
+ if [ -n "$CISCO_BANNER" ]; then
+ logger -t openconnect "Connect Banner:"
+ echo "$CISCO_BANNER" | while read LINE ; do logger -t openconnect "|" "$LINE" ; done
+ fi
+
+ proto_init_update "$TUNDEV" 1
+
+ if [ -n "$INTERNAL_IP4_MTU" ]; then
+ MTU=$INTERNAL_IP4_MTU
+ fi
+
+ if [ -z "$MTU" ]; then
+ MTU=1412
+ fi
+
+ proto_add_ipv4_address "$INTERNAL_IP4_ADDRESS" 32 "" "$INTERNAL_IP4_ADDRESS"
+
+ if [ -n "$INTERNAL_IP4_NETMASKLEN" ]; then
+ proto_add_ipv4_route "$INTERNAL_IP4_NETADDR" "$INTERNAL_IP4_NETMASKLEN"
+ fi
+
+ # If the netmask is provided, it contains the address _and_ netmask
+ if [ -n "$INTERNAL_IP6_ADDRESS" ] && [ -z "$INTERNAL_IP6_NETMASK" ]; then
+ INTERNAL_IP6_NETMASK="$INTERNAL_IP6_ADDRESS/128"
+ fi
+
+ if [ -n "$INTERNAL_IP6_NETMASK" ]; then
+ addr="${INTERNAL_IP6_NETMASK%%/*}"
+ mask="${INTERNAL_IP6_NETMASK##*/}"
+ [[ "$addr" != "$mask" ]] && proto_add_ipv6_address "$addr" "$mask"
+ fi
+
+ if [ -n "$CISCO_SPLIT_DNS" ] && [ -d "/tmp/dnsmasq.d/" ];then
+ SDNS=`echo $CISCO_SPLIT_DNS|sed 's/,/\n/g'`
+ DNSMASQ_FILE="/tmp/dnsmasq.d/openconnect.$TUNDEV"
+ rm -f $DNSMASQ_FILE
+ echo "$SDNS" | while read i; do
+ if [ -n "$INTERNAL_IP4_DNS" ];then
+ echo "server=/$i/$INTERNAL_IP4_DNS" >> $DNSMASQ_FILE
+ fi
+ if [ -n "$INTERNAL_IP6_DNS" ];then
+ echo "server=/$i/$INTERNAL_IP6_DNS" >> $DNSMASQ_FILE
+ fi
+ echo "rebind-domain-ok=$i" >> $DNSMASQ_FILE
+ done
+ /etc/init.d/dnsmasq restart
+ else
+ [ -n "$INTERNAL_IP4_DNS" ] && proto_add_dns_server "$INTERNAL_IP4_DNS"
+ [ -n "$CISCO_DEF_DOMAIN" ] && proto_add_dns_search "$CISCO_DEF_DOMAIN"
+ fi
+
+ if [ -n "$CISCO_SPLIT_INC" ]; then
+ i=0
+ while [ $i -lt $CISCO_SPLIT_INC ] ; do
+ eval NETWORK="\${CISCO_SPLIT_INC_${i}_ADDR}"
+ eval NETMASK="\${CISCO_SPLIT_INC_${i}_MASK}"
+ eval NETMASKLEN="\${CISCO_SPLIT_INC_${i}_MASKLEN}"
+ if [ $NETWORK != "0.0.0.0" ]; then
+ proto_add_ipv4_route "$NETWORK" "$NETMASKLEN"
+ else
+ proto_add_ipv4_route "0.0.0.0" 0
+ fi
+ i=$(($i + 1))
+ done
+ elif [ -n "$INTERNAL_IP4_ADDRESS" ]; then
+ proto_add_ipv4_route "0.0.0.0" 0
+ fi
+ if [ -n "$CISCO_IPV6_SPLIT_INC" ]; then
+ i=0
+ while [ $i -lt $CISCO_IPV6_SPLIT_INC ] ; do
+ eval NETWORK="\${CISCO_IPV6_SPLIT_INC_${i}_ADDR}"
+ eval NETMASKLEN="\${CISCO_IPV6_SPLIT_INC_${i}_MASKLEN}"
+ if [ $NETMASKLEN -lt 128 ]; then
+ proto_add_ipv6_route "$NETWORK" "$NETMASKLEN"
+ else
+ proto_add_ipv6_route "::0" 0
+ fi
+ i=$(($i + 1))
+ done
+ elif [ -n "$INTERNAL_IP6_NETMASK" -o -n "$INTERNAL_IP6_ADDRESS" ]; then
+ proto_add_ipv6_route "::0" 0
+ fi
+ proto_send_update "$INTERFACE"
+}
+
+do_disconnect() {
+ rm -f "/tmp/dnsmasq.d/openconnect.$TUNDEV"
+ proto_init_update "$TUNDEV" 0
+ proto_send_update "$INTERFACE"
+}
+
+#### Hooks
+run_hooks() {
+ HOOK="$1"
+
+ if [ -d ${HOOKS_DIR}/${HOOK}.d ]; then
+ for script in ${HOOKS_DIR}/${HOOK}.d/* ; do
+ [ -f $script ] && . $script
+ done
+ fi
+}
+
+#### Main
+
+if [ -z "$reason" ]; then
+ logger -t openconnect "this script must be called from vpnc" 1>&2
+ exit 1
+fi
+if [ -z "$INTERFACE" ]; then
+ logger -t openconnect "this script must be called for an active interface"
+ exit 1
+fi
+
+. /lib/netifd/netifd-proto.sh
+
+case "$reason" in
+ pre-init)
+ run_hooks pre-init
+ ;;
+ connect)
+ run_hooks connect
+ do_connect
+ run_hooks post-connect
+ ;;
+ disconnect)
+ run_hooks disconnect
+ do_disconnect
+ run_hooks post-disconnect
+ ;;
+ reconnect)
+ run_hooks reconnect
+ ;;
+ *)
+ logger -t openconnect "unknown reason '$reason'. Maybe vpnc-script is out of date" 1>&2
+ exit 1
+ ;;
+esac
+
+exit 0
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