You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
203 lines
6.2 KiB
203 lines
6.2 KiB
#!/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 "$INTERNAL_IP4_DNS" ];then
|
|
for dns in "$INTERNAL_IP4_DNS";do
|
|
echo "server=/$i/$dns" >> $DNSMASQ_FILE
|
|
done
|
|
fi
|
|
if [ -n "$INTERNAL_IP6_DNS" ];then
|
|
for dns in "$INTERNAL_IP6_DNS";do
|
|
echo "server=/$i/$dns" >> $DNSMASQ_FILE
|
|
done
|
|
fi
|
|
echo "rebind-domain-ok=$i" >> $DNSMASQ_FILE
|
|
done
|
|
/etc/init.d/dnsmasq restart
|
|
else
|
|
if [ -n "$INTERNAL_IP4_DNS" ];then
|
|
for dns in "$INTERNAL_IP4_DNS";do
|
|
proto_add_dns_server "$dns"
|
|
done
|
|
fi
|
|
if [ -n "$INTERNAL_IP6_DNS" ];then
|
|
for dns in "$INTERNAL_IP6_DNS";do
|
|
proto_add_dns_server "$dns"
|
|
done
|
|
fi
|
|
[ -n "$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
|