isc-dhcp-relay: Add init scripts for ipv4 and ipv6 as well as config

file

I cleaned up the patch so line do not overflow and removed some white
space in hope to get it accepted or revised.

As isc-dhcp-relay does not come with an init script, I made one based
on sysntpd init.d file for both ipv4 and ipv6.

If you need more arguments from isc-dhcp-relay to be included in the
config file, I'll be able to add them.

This patch has been applied to trunk and compiles/install on my side.

The script for ipv4 and ipv6 have been tested with the
isc-dhcp-relay-ipv6 binary and work well (start/stop with the right
settings).

Signed-off-by: Jérôme Poulin <jeromepoulin@gmail.com>
Signed-off-by: Florian Fainelli <florian@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/packages@34485 3c298f89-4303-0410-b956-a3cf2f4a3e73

net/isc-dhcp/Makefile

@@ -10,7 +10,7 @@ include $(TOPDIR)/rules.mk
 PKG_NAME:=isc-dhcp
 UPSTREAM_NAME:=dhcp
 PKG_VERSION:=4.2.4
-PKG_RELEASE:=2
+PKG_RELEASE:=3
 
 PKG_SOURCE:=$(UPSTREAM_NAME)-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=ftp://ftp.isc.org/isc/dhcp/$(PKG_VERSION)
@@ -173,6 +173,13 @@ endef
 define Package/isc-dhcp-relay-$(BUILD_VARIANT)/install
 	$(INSTALL_DIR) $(1)/usr/sbin
 	$(INSTALL_BIN) $(PKG_INSTALL_DIR)/usr/sbin/dhcrelay $(1)/usr/sbin
+	$(INSTALL_DIR) $(1)/etc/config
+	$(INSTALL_DATA) ./files/etc/config/dhcrelay $(1)/etc/config
+	$(INSTALL_DIR) $(1)/etc/init.d
+	$(INSTALL_BIN) ./files/dhcrelay4.init $(1)/etc/init.d/dhcrelay4
+ifeq ($(BUILD_VARIANT),ipv6)
+	$(INSTALL_BIN) ./files/dhcrelay6.init $(1)/etc/init.d/dhcrelay6
+endif
 endef
 
 define Package/isc-dhcp-server-$(BUILD_VARIANT)/install

net/isc-dhcp/files/dhcrelay4.init

@@ -0,0 +1,22 @@
+#!/bin/sh /etc/rc.common
+# Copyright (C) 2012 OpenWrt.org
+
+START=91
+
+SERVICE_SIG="KILL"
+SERVICE_PID_FILE="/var/run/dhcrelay4.pid"
+SERVICE_USE_PID=1
+
+start() {
+    local relay_dhcpserver
+
+    config_load dhcrelay
+    config_get relay_dhcpserver ipv4 dhcpserver
+
+    service_start /usr/sbin/dhcrelay -4 -q \
+        -pf $SERVICE_PID_FILE $relay_dhcpserver
+}
+
+stop() {
+    service_stop /usr/sbin/dhcrelay
+}

net/isc-dhcp/files/dhcrelay6.init

@@ -0,0 +1,42 @@
+#!/bin/sh /etc/rc.common
+# Copyright (C) 2012 OpenWrt.org
+
+START=91
+
+SERVICE_SIG="KILL"
+SERVICE_PID_FILE="/var/run/dhcrelay6.pid"
+SERVICE_USE_PID=1
+
+start() {
+    local relay_dhcpserver
+    local relay_upper
+    local relay_lowers
+    local relay_lower_args
+
+    config_load dhcrelay
+    config_get relay_dhcpserver ipv6 dhcpserver
+    config_get relay_upper ipv6 upper
+    config_get relay_lowers ipv6 lower
+
+    # If a specific DHCP server is specified,
+    # add it to the upper interface.
+    if [ -n "$relay_dhcpserver" ]; then
+        relay_upper="${relay_dhcpserver}%$relay_upper"
+    fi
+
+    # Add all lower interfaces at the end.
+    if [ -n "$relay_lowers" ]; then
+        local relay_lower
+        for relay_lower in $relay_lowers; do
+            append relay_lower_args "-l $relay_lower"
+        done
+    fi
+
+    service_start /usr/sbin/dhcrelay -6 -q \
+        -pf $SERVICE_PID_FILE \
+        -u $relay_upper $relay_lower_args
+}
+
+stop() {
+    service_stop /usr/sbin/dhcrelay
+}

net/isc-dhcp/files/etc/config/dhcrelay

@@ -0,0 +1,10 @@
+
+config dhcrelay ipv4
+    option dhcpserver '192.0.2.10'
+
+config dhcrelay ipv6
+#    option dhcpserver '2001:db8:1::1'
+    option upper 'eth1'
+    list lower 'eth0.2'
+    list lower 'eth0.3'
+