2 # List of parameters passed through environment
3 #* reason -- why this script was called, one of: pre-init connect disconnect
4 #* VPNGATEWAY -- vpn gateway address (always present)
5 #* TUNDEV -- tunnel device (always present)
6 #* INTERNAL_IP4_ADDRESS -- address (always present)
7 #* INTERNAL_IP4_MTU -- mtu (often unset)
8 #* INTERNAL_IP4_NETMASK -- netmask (often unset)
9 #* INTERNAL_IP4_NETMASKLEN -- netmask length (often unset)
10 #* INTERNAL_IP4_NETADDR -- address of network (only present if netmask is set)
11 #* INTERNAL_IP4_DNS -- list of dns servers
12 #* INTERNAL_IP4_NBNS -- list of wins servers
13 #* INTERNAL_IP6_ADDRESS -- IPv6 address
14 #* INTERNAL_IP6_NETMASK -- IPv6 netmask
15 #* INTERNAL_IP6_DNS -- IPv6 list of dns servers
16 #* CISCO_DEF_DOMAIN -- default domain name
17 #* CISCO_BANNER -- banner from server
18 #* CISCO_SPLIT_INC -- number of networks in split-network-list
19 #* CISCO_SPLIT_INC_%d_ADDR -- network address
20 #* CISCO_SPLIT_INC_%d_MASK -- subnet mask (for example: 255.255.255.0)
21 #* CISCO_SPLIT_INC_%d_MASKLEN -- subnet masklen (for example: 24)
22 #* CISCO_SPLIT_INC_%d_PROTOCOL -- protocol (often just 0)
23 #* CISCO_SPLIT_INC_%d_SPORT -- source port (often just 0)
24 #* CISCO_SPLIT_INC_%d_DPORT -- destination port (often just 0)
25 #* CISCO_IPV6_SPLIT_INC -- number of networks in IPv6 split-network-list
26 #* CISCO_IPV6_SPLIT_INC_%d_ADDR -- IPv6 network address
27 #* CISCO_IPV6_SPLIT_INC_$%d_MASKLEN -- IPv6 subnet masklen
29 HOOKS_DIR=/etc/openconnect
33 # Section A: route handling
35 # 1) The 3 values CISCO_SPLIT_INC_%d_PROTOCOL/SPORT/DPORT are currently being ignored
36 # In order to use them, we'll probably need os specific solutions
37 # * Linux: iptables -t mangle -I PREROUTING <conditions> -j ROUTE --oif $TUNDEV
38 # This would be an *alternative* to changing the routes (and thus 2) and 3)
39 # shouldn't be relevant at all)
40 # 2) There are two different functions to set routes: generic routes and the
41 # default route. Why isn't the defaultroute handled via the generic route case?
42 # 3) In the split tunnel case, all routes but the default route might get replaced
43 # without getting restored later. We should explicitely check and save them just
44 # like the defaultroute
45 # 4) Replies to a dhcp-server should never be sent into the tunnel
47 # Section B: Split DNS handling
49 # 1) We parse CISCO_SPLIT_DNS and use dnsmasq to set it
52 if [ -n "$CISCO_BANNER" ]; then
53 logger -t openconnect "Connect Banner:"
54 echo "$CISCO_BANNER" | while read LINE ; do logger -t openconnect "|" "$LINE" ; done
57 proto_init_update "$TUNDEV" 1
59 if [ -n "$INTERNAL_IP4_MTU" ]; then
63 if [ -z "$MTU" ]; then
67 proto_add_ipv4_address "$INTERNAL_IP4_ADDRESS" 32 "" "$INTERNAL_IP4_ADDRESS"
69 if [ -n "$INTERNAL_IP4_NETMASKLEN" ]; then
70 proto_add_ipv4_route "$INTERNAL_IP4_NETADDR" "$INTERNAL_IP4_NETMASKLEN"
73 # If the netmask is provided, it contains the address _and_ netmask
74 if [ -n "$INTERNAL_IP6_ADDRESS" ] && [ -z "$INTERNAL_IP6_NETMASK" ]; then
75 INTERNAL_IP6_NETMASK="$INTERNAL_IP6_ADDRESS/128"
78 if [ -n "$INTERNAL_IP6_NETMASK" ]; then
79 addr="${INTERNAL_IP6_NETMASK%%/*}"
80 mask="${INTERNAL_IP6_NETMASK##*/}"
81 [[ "$addr" != "$mask" ]] && proto_add_ipv6_address "$addr" "$mask"
84 DNSMASQ_FILE="/tmp/dnsmasq.d/openconnect.$TUNDEV"
85 LOCAL_DOMAIN=$(uci get dhcp.@dnsmasq[0].domain)
87 if [ -n "$CISCO_SPLIT_DNS" ] && [ -d "/tmp/dnsmasq.d/" ];then
88 SDNS=`echo $CISCO_SPLIT_DNS|sed 's/,/\n/g'`
89 echo "$SDNS" | while read i; do
90 if [ "$i" = "$LOCAL_DOMAIN" ];then
93 if [ -n "$INTERNAL_IP4_DNS" ];then
94 for dns in $INTERNAL_IP4_DNS;do
95 echo "server=/$i/$dns" >> $DNSMASQ_FILE
98 if [ -n "$INTERNAL_IP6_DNS" ];then
99 for dns in $INTERNAL_IP6_DNS;do
100 echo "server=/$i/$dns" >> $DNSMASQ_FILE
103 echo "rebind-domain-ok=$i" >> $DNSMASQ_FILE
105 /etc/init.d/dnsmasq restart
107 if [ -n "$INTERNAL_IP4_DNS" ];then
108 for dns in $INTERNAL_IP4_DNS;do
109 proto_add_dns_server "$dns"
112 if [ -n "$INTERNAL_IP6_DNS" ];then
113 for dns in $INTERNAL_IP6_DNS;do
114 proto_add_dns_server "$dns"
117 if [ -n "$CISCO_DEF_DOMAIN" ] && [ "$CISCO_DEF_DOMAIN" != "$LOCAL_DOMAIN" ];then
118 if [ -n "$INTERNAL_IP4_DNS" ];then
119 for dns in $INTERNAL_IP4_DNS;do
120 echo "server=/$CISCO_DEF_DOMAIN/$dns" >> $DNSMASQ_FILE
123 if [ -n "$INTERNAL_IP6_DNS" ];then
124 for dns in $INTERNAL_IP6_DNS;do
125 echo "server=/$CISCO_DEF_DOMAIN/$dns" >> $DNSMASQ_FILE
128 proto_add_dns_search "$CISCO_DEF_DOMAIN"
132 if [ -n "$CISCO_SPLIT_INC" ]; then
134 while [ $i -lt $CISCO_SPLIT_INC ] ; do
135 eval NETWORK="\${CISCO_SPLIT_INC_${i}_ADDR}"
136 eval NETMASK="\${CISCO_SPLIT_INC_${i}_MASK}"
137 eval NETMASKLEN="\${CISCO_SPLIT_INC_${i}_MASKLEN}"
138 if [ $NETWORK != "0.0.0.0" ]; then
139 proto_add_ipv4_route "$NETWORK" "$NETMASKLEN"
141 proto_add_ipv4_route "0.0.0.0" 0
145 elif [ -n "$INTERNAL_IP4_ADDRESS" ]; then
146 proto_add_ipv4_route "0.0.0.0" 0
148 if [ -n "$CISCO_IPV6_SPLIT_INC" ]; then
150 while [ $i -lt $CISCO_IPV6_SPLIT_INC ] ; do
151 eval NETWORK="\${CISCO_IPV6_SPLIT_INC_${i}_ADDR}"
152 eval NETMASKLEN="\${CISCO_IPV6_SPLIT_INC_${i}_MASKLEN}"
153 if [ $NETMASKLEN -lt 128 ]; then
154 proto_add_ipv6_route "$NETWORK" "$NETMASKLEN"
156 proto_add_ipv6_route "::0" 0
160 elif [ -n "$INTERNAL_IP6_NETMASK" -o -n "$INTERNAL_IP6_ADDRESS" ]; then
161 proto_add_ipv6_route "::0" 0
163 proto_send_update "$INTERFACE"
167 rm -f "/tmp/dnsmasq.d/openconnect.$TUNDEV"
168 proto_init_update "$TUNDEV" 0
169 proto_send_update "$INTERFACE"
176 if [ -d ${HOOKS_DIR}/${HOOK}.d ]; then
177 for script in ${HOOKS_DIR}/${HOOK}.d/* ; do
178 [ -f $script ] && . $script
185 if [ -z "$reason" ]; then
186 logger -t openconnect "this script must be called from vpnc" 1>&2
189 if [ -z "$INTERFACE" ]; then
190 logger -t openconnect "this script must be called for an active interface"
194 . /lib/netifd/netifd-proto.sh
203 run_hooks post-connect
208 run_hooks post-disconnect
214 logger -t openconnect "unknown reason '$reason'. Maybe vpnc-script is out of date" 1>&2