Import openresolv from vendor branch, actually.

Helped by:	jhb

1 files changed, 153 insertions, 0 deletions

diff --git a/contrib/openresolv/pdnsd.in b/contrib/openresolv/pdnsd.in
new file mode 100644
index 0000000..ff3b9b2
--- /dev/null
+++ b/contrib/openresolv/pdnsd.in
@@ -0,0 +1,153 @@
+#!/bin/sh
+# Copyright (c) 2010 Roy Marples
+# All rights reserved
+
+# pdnsd subscriber for resolvconf
+
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#     * Redistributions of source code must retain the above copyright
+#       notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+#       copyright notice, this list of conditions and the following
+#       disclaimer in the documentation and/or other materials provided
+#       with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+[ -f "@SYSCONFDIR@"/resolvconf.conf ] || exit 0
+. "@SYSCONFDIR@/resolvconf.conf" || exit 1
+[ -z "$pdnsd_conf" -a -z "$pdnsd_resolv" ] && exit 0
+[ -z "$RESOLVCONF" ] && eval "$(@PREFIX@/sbin/resolvconf -v)"
+
+: ${pdnsd_restart:=pdnsd-ctl config $pdnsd_conf}
+signature="# Generated by resolvconf"
+signature_end="# End of resolvconf"
+
+# We normally use sed to remove markers from a configuration file
+# but sed may not always be available at the time.
+remove_markers()
+{
+	local m1="$1" m2="$2" x= line= in_marker=0
+
+	shift; shift
+	if type sed >/dev/null 2>&1; then
+		sed "/^$m1/,/^$m2/d" $@
+	else
+		for x; do
+			while read line; do
+				case "$line" in
+				"$m1"*) in_marker=1;;
+				"$m2"*) in_marker=0;;
+				*) [ $in_marker = 0 ] && echo "$line";;
+				esac
+			done < "$x"
+		done
+	fi
+}
+
+# Compare two files
+# If different, replace first with second otherwise remove second
+change_file()
+{
+	if [ -e "$1" ]; then
+		if type cmp >/dev/null 2>&1; then
+			cmp -s "$1" "$2"
+		elif type diff >/dev/null 2>&1; then
+			diff -q "$1" "$2" >/dev/null
+		else
+			# Hopefully we're only working on small text files ...
+			[ "$(cat "$1")" = "$(cat "$2")" ]
+		fi
+		if [ $? -eq 0 ]; then
+			rm -f "$2"
+			return 1
+		fi
+	fi
+	cat "$2" > "$1"
+	rm -f "$2"
+	return 0
+}
+
+newresolv="# Generated by resolvconf\n"
+changed=false
+
+if [ -n "$pdnsd_resolv" ]; then
+	for n in $NAMESERVERS; do
+		newresolv="${newresolv}nameserver $n\n"
+	done
+fi
+
+if [ -n "$pdnsd_conf" ]; then
+	cf="$pdnsd_conf.new"
+	newconf=
+
+	if [ -z "$pdnsd_resolv" ]; then
+		newconf="${newconf}server {\n"
+		newconf="${newconf}\tlabel=resolvconf;\n"
+		if [ -n "$NAMESERVERS" ]; then
+			newconf="${newconf}\tip="
+			first=true
+			for n in $NAMESERVERS; do
+				if $first; then
+					first=false
+				else
+					newconf="${newconf},"
+				fi
+				newconf="$newconf$n"
+			done
+			newconf="${newconf};\n"
+		fi
+		newconf="${newconf}}\n"
+	fi
+
+	for d in $DOMAINS; do
+		newconf="${newconf}server {\n"
+		newconf="${newconf}\tinclude=.${d%%:*}.;\n"
+		newconf="${newconf}\tpolicy=excluded;\n"
+		newconf="${newconf}\tip="
+		ns="${d#*:}"
+		while [ -n "$ns" ]; do
+			newconf="${newconf}${ns%%,*}"
+			[ "$ns" = "${ns#*,}" ] && break
+			ns="${ns#*,}"
+			newconf="${newconf},"
+		done
+		newconf="${newconf};\n}\n"
+	done
+
+	rm -f "$cf"
+	remove_markers "$signature" "$signature_end" "$pdnsd_conf" > "$cf"
+	if [ -n "$newconf" ]; then
+		echo "$signature" >> "$cf"
+		printf "$newconf" >> "$cf"
+		echo "$signature_end" >> "$cf"
+	fi
+	if change_file "$pdnsd_conf" "$cf"; then
+		changed=true
+	fi	
+fi
+
+if [ -n "$pdnsd_resolv" ]; then
+	if [ ! -f "$pdnsd_resolv" ] || \
+		[ "$(cat "$pdnsd_resolv")" != "$(printf "$newresolv")" ]
+	then
+		changed=true
+		printf "$newresolv" >"$pdnsd_resolv"
+	fi
+fi
+
+if $changed; then
+	eval $pdnsd_restart
+fi