openconnect: register split-dns to dnsmasq

Signed-off-by: Nikos Mavrogiannopoulos <nmav@gnutls.org>

diff --git a/net/openconnect/files/vpnc-script b/net/openconnect/files/vpnc-script
index 2a7debcad6dc321e3110efaa63e7e2d94fd9f344..1217eea8905abe3805ec28e4b87971cd71a5d6b8 100755 (executable)
--- a/net/openconnect/files/vpnc-script
+++ b/net/openconnect/files/vpnc-script
@@ -46,8 +46,7 @@ HOOKS_DIR=/etc/openconnect
 
 # Section B: Split DNS handling
 
-# 1) Maybe dnsmasq can do something like that
-# 2) Parse dns packets going out via tunnel and redirect them to original dns-server
+# 1) We parse CISCO_SPLIT_DNS and use dnsmasq to set it
 
 do_connect() {
        if [ -n "$CISCO_BANNER" ]; then
@@ -82,8 +81,23 @@ do_connect() {
                [[ "$addr" != "$mask" ]] && proto_add_ipv6_address "$addr" "$mask"
        fi
 
-       [ -n "$INTERNAL_IP4_DNS" ] && proto_add_dns_server "$INTERNAL_IP4_DNS"
-       [ -n "$CISCO_DEF_DOMAIN" ] && proto_add_dns_search "$CISCO_DEF_DOMAIN"
+       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" >> $DNSMASQ_FILE
+                       fi
+               done
+               /etc/init.d/dnsmasq restart
+       else
+               [ -n "$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
@@ -120,6 +134,7 @@ do_connect() {
 }
 
 do_disconnect() {
+       rm -f "/tmp/dnsmasq.d/openconnect.$TUNDEV"
        proto_init_update "$TUNDEV" 0
        proto_send_update "$INTERFACE"
 }