Initial commit

MBR/openvpn/update-resolv-conf

@@ -0,0 +1,58 @@
+#!/bin/bash
+# 
+# Parses DHCP options from openvpn to update resolv.conf
+# To use set as 'up' and 'down' script in your openvpn *.conf:
+# up /etc/openvpn/update-resolv-conf
+# down /etc/openvpn/update-resolv-conf
+#
+# Used snippets of resolvconf script by Thomas Hood and Chris Hanson.
+# Licensed under the GNU GPL.  See /usr/share/common-licenses/GPL. 
+# 
+# Example envs set from openvpn:
+#
+#     foreign_option_1='dhcp-option DNS 193.43.27.132'
+#     foreign_option_2='dhcp-option DNS 193.43.27.133'
+#     foreign_option_3='dhcp-option DOMAIN be.bnc.ch'
+#
+
+[ -x /sbin/resolvconf ] || exit 0
+[ "$script_type" ] || exit 0
+[ "$dev" ] || exit 0
+
+split_into_parts()
+{
+	part1="$1"
+	part2="$2"
+	part3="$3"
+}
+
+case "$script_type" in
+  up)
+	NMSRVRS=""
+	SRCHS=""
+	for optionvarname in ${!foreign_option_*} ; do
+		option="${!optionvarname}"
+		echo "$option"
+		split_into_parts $option
+		if [ "$part1" = "dhcp-option" ] ; then
+			if [ "$part2" = "DNS" ] ; then
+				NMSRVRS="${NMSRVRS:+$NMSRVRS }$part3"
+			elif [ "$part2" = "DOMAIN" ] ; then
+				SRCHS="${SRCHS:+$SRCHS }$part3"
+			fi
+		fi
+	done
+	R=""
+	[ "$SRCHS" ] && R="search $SRCHS
+"
+	for NS in $NMSRVRS ; do
+        	R="${R}nameserver $NS
+"
+	done
+	echo -n "$R" | /sbin/resolvconf -a "${dev}.openvpn"
+	;;
+  down)
+	/sbin/resolvconf -d "${dev}.openvpn"
+	;;
+esac
+