ocserv: Added option to pass split-dns configuration to clients

Relates to #1975

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

net/ocserv/Makefile

@@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=ocserv
 PKG_VERSION:=0.10.9
-PKG_RELEASE:=3
+PKG_RELEASE:=4
 PKG_USE_MIPS16:=0
 
 PKG_BUILD_DIR :=$(BUILD_DIR)/$(PKG_NAME)-$(PKG_VERSION)

net/ocserv/README

@@ -105,6 +105,22 @@ config ocservusers
 -----------------------------------------------------------------
 ```
 
+Setting up split-dns
+====================
+
+To allow the clients to resolv with the local domain add the following
+to the ocserv configuration file.
+
+```
+----/etc/config/ocserv-------------------------------------------
+config ocserv 'config'
+	option split_dns '1'
+	option default_domain 'mydomain'
+```
+
+The ```default_domain``` is optional and if not set, it will be autodetected
+from dnsmasq's configuration.
+
 
 Setting up the firewall
 =======================

net/ocserv/files/ocserv.conf.template

@@ -271,7 +271,7 @@ ipv4-netmask = |NETMASK|
 
 # The domains over which the provided DNS should be used. Use
 # multiple lines for multiple domains.
-|ENABLE_DEFAULT_DOMAIN|split-dns = |DEFAULT_DOMAIN|
+|ENABLE_SPLIT_DNS|split-dns = |DEFAULT_DOMAIN|
 
 # Prior to leasing any IP from the pool ping it to verify that
 # it is not in use by another (unrelated to this server) host.

net/ocserv/files/ocserv.init

@@ -18,6 +18,7 @@ setup_config() {
 	config_get ip6addr      $1 ip6addr ""
 	config_get proxy_arp    $1 proxy_arp "0"
 	config_get ping_leases  $1 ping_leases "0"
+	config_get split_dns    $1 split_dns "0"
 	config_get default_domain  $1 default_domain ""
 
 	# Enable proxy arp, and make sure that ping leases is set to true in that case,
@@ -57,6 +58,7 @@ setup_config() {
 	enable_default_domain="#"
 	enable_udp="#"
 	enable_compression="#"
+	enable_split_dns="#"
 	test $predictable_ips = "0" && predictable_ips="false"
 	test $predictable_ips = "1" && predictable_ips="true"
 	test $cisco_compat = "0" && cisco_compat="false"
@@ -64,8 +66,11 @@ setup_config() {
 	test $ping_leases = "0" && ping_leases="false"
 	test $ping_leases = "1" && ping_leases="true"
 	test $udp = "1" && enable_udp=""
+	test $split_dns = "1" && enable_split_dns=""
 	test $compression = "1" && enable_compression=""
-	test -z $default_domain && enable_default_domain=""
+
+	test $split_dns = "1" && test -z $default_domain && default_domain=$(uci get dhcp.@dnsmasq[0].domain)
+	test -n $default_domain && enable_default_domain=""
 	test -z $ip6addr && enable_ipv6="#"
 
 	test $auth = "plain" && authsuffix="\[passwd=/var/etc/ocpasswd\]"
@@ -84,6 +89,7 @@ setup_config() {
 	    -e "s/|PREDICTABLE_IPS|/$predictable_ips/g" \
 	    -e "s/|DEFAULT_DOMAIN|/$default_domain/g" \
 	    -e "s/|ENABLE_DEFAULT_DOMAIN|/$enable_default_domain/g" \
+	    -e "s/|ENABLE_SPLIT_DNS|/$enable_split_dns/g" \
 	    -e "s/|CISCO_COMPAT|/$cisco_compat/g" \
 	    -e "s/|PING_LEASES|/$ping_leases/g" \
 	    -e "s/|UDP|/$enable_udp/g" \