From 8a790d97308153c345abfd27e5693b688fc3ba89 Mon Sep 17 00:00:00 2001
From: Felix Fietkau <nbd@openwrt.org>
Date: Mon, 30 Apr 2012 18:23:52 +0000
Subject: [PATCH] relayd: use an init script instead of a legacy network proto
 handler (fixes #11276)

SVN-Revision: 31542
---
 package/relayd/Makefile            |   4 +-
 package/relayd/files/relay.hotplug |  36 +----------
 package/relayd/files/relay.init    |  97 ++++++++++++++++++++++++++++
 package/relayd/files/relay.sh      | 100 -----------------------------
 4 files changed, 100 insertions(+), 137 deletions(-)
 create mode 100644 package/relayd/files/relay.init
 delete mode 100644 package/relayd/files/relay.sh

diff --git a/package/relayd/Makefile b/package/relayd/Makefile
index d70bd97b09..c8730a3232 100644
--- a/package/relayd/Makefile
+++ b/package/relayd/Makefile
@@ -35,8 +35,8 @@ define Package/relayd/install
 	$(INSTALL_BIN) $(PKG_BUILD_DIR)/relayd $(1)/usr/sbin/relayd
 	$(INSTALL_DIR) $(1)/etc/hotplug.d/iface
 	$(INSTALL_DATA) ./files/relay.hotplug $(1)/etc/hotplug.d/iface/30-relay
-	$(INSTALL_DIR) $(1)/lib/network
-	$(INSTALL_DATA) ./files/relay.sh $(1)/lib/network/relay.sh
+	$(INSTALL_DIR) $(1)/etc/init.d
+	$(INSTALL_BIN) ./files/relay.init $(1)/etc/init.d/relayd
 endef
 
 $(eval $(call BuildPackage,relayd))
diff --git a/package/relayd/files/relay.hotplug b/package/relayd/files/relay.hotplug
index b992fca08c..afffbfeab8 100644
--- a/package/relayd/files/relay.hotplug
+++ b/package/relayd/files/relay.hotplug
@@ -1,36 +1,2 @@
 #!/bin/sh
-
-# Break recursion
-[ "$PROTO" = "relay" ] && exit 0
-
-include /lib/network
-scan_interfaces
-
-restart_relayd() {
-	local cfg="$1"
-	
-	local proto
-	config_get proto "$1" proto
-	[ "$proto" = "relay" ] || return 0
-
-	local net networks
-	config_get networks "$cfg" network
-	for net in $networks; do
-		[ "$net" = "$INTERFACE" ] && {
-			env -i /sbin/ifup "$cfg" &
-			return 0
-		}
-	done
-
-	local ifn ifnames
-	config_get ifnames "$cfg" ifname
-	for ifn in $ifnames; do
-		[ "$ifn" = "$DEVICE" ] && {
-			env -i /sbin/ifup "$cfg" &
-			return 0
-		}
-	done
-}
-
-config_foreach restart_relayd interface
-
+/etc/init.d/relayd enabled && /etc/init.d/relayd start
diff --git a/package/relayd/files/relay.init b/package/relayd/files/relay.init
new file mode 100644
index 0000000000..98a38b4eaa
--- /dev/null
+++ b/package/relayd/files/relay.init
@@ -0,0 +1,97 @@
+#!/bin/sh /etc/rc.common
+# Copyright (c) 2011-2012 OpenWrt.org
+START=80
+
+resolve_ifname() {
+	grep -qs "^ *$1:" /proc/net/dev && {
+		append args "-I $1"
+		append ifaces "$1"
+	}
+}
+
+resolve_network() {
+	local ifn
+	config_get ifn "$1" ifname
+	[ -z "$ifn" ] && return 1
+	resolve_ifname "$ifn"
+	return 0
+}
+
+start_relay() {
+	local cfg="$1"
+
+	local args=""
+	local ifaces=""
+
+	config_get proto "$cfg" proto
+	[[ "$proto" == relay ]] || return 0
+
+	SERVICE_DAEMONIZE=1
+	SERVICE_WRITE_PID=1
+	SERVICE_PID_FILE="/var/run/relay-$cfg.pid"
+	[ -f "$SERVICE_PID_FILE" ] && {
+		if grep -q relayd "/proc/$(cat $SERVICE_PID_FILE)/cmdline"; then
+			return 0
+		else
+			rm -f "$SERVICE_PID_FILE"
+		fi
+	}
+
+	local net networks
+	config_get networks "$cfg" network
+	for net in $networks; do
+		resolve_network "$net" || {
+			return 1
+		}
+	done
+
+	local ifn ifnames
+	config_get ifnames "$cfg" ifname
+	for ifn in $ifnames; do
+		resolve_ifname "$ifn"
+	done
+
+	local ipaddr
+	config_get ipaddr "$cfg" ipaddr
+	[ -n "$ipaddr" ] && append args "-L $ipaddr"
+
+	local gateway
+	config_get gateway "$cfg" gateway
+	[ -n "$gateway" ] && append args "-G $gateway"
+
+	local expiry # = 30
+	config_get expiry "$cfg" expiry
+	[ -n "$expiry" ] && append args "-t $expiry"
+
+	local retry # = 5
+	config_get retry "$cfg" retry
+	[ -n "$retry" ] && append args "-p $retry"
+
+	local table # = 16800
+	config_get table "$cfg" table
+	[ -n "$table" ] && append args "-T $table"
+
+	local fwd_bcast # = 1
+	config_get_bool fwd_bcast "$cfg" forward_bcast 1
+	[ $fwd_bcast -eq 1 ] && append args "-B"
+
+	local fwd_dhcp # = 1
+	config_get_bool fwd_dhcp "$cfg" forward_dhcp 1
+	[ $fwd_dhcp -eq 1 ] && append args "-D"
+
+	service_start /usr/sbin/relayd $args
+}
+
+stop() {
+	for pid in /var/run/relay-*.pid; do
+		SERVICE_PID_FILE="$pid"
+		service_stop /usr/sbin/relayd
+		rm -f "$SERVICE_PID_FILE"
+	done
+}
+
+start() {
+	include /lib/network
+	scan_interfaces
+	config_foreach start_relay interface
+}
diff --git a/package/relayd/files/relay.sh b/package/relayd/files/relay.sh
deleted file mode 100644
index 9cfdbbb1b2..0000000000
--- a/package/relayd/files/relay.sh
+++ /dev/null
@@ -1,100 +0,0 @@
-# relay.sh - Abstract relayd protocol backend
-# Copyright (c) 2011 OpenWrt.org
-
-# Hook into scan_interfaces() to synthesize a .device option
-# This is needed for /sbin/ifup to properly dispatch control
-# to setup_interface_relay() even if no .ifname is set in
-# the configuration.
-scan_relay() {
-	config_set "$1" device "relay-$1"
-}
-
-# No coldplugging needed, relayd will be restarted if one of
-# the member interfaces goes up or down
-#coldplug_interface_relay() {
-#	setup_interface_relay "relay-$1" "$1"
-#}
-
-setup_interface_relay() {
-	local iface="$1"
-	local cfg="$2"
-	local link="relay-$cfg"
-
-	local args=""
-	local ifaces=""
-
-	resolve_ifname() {
-		grep -qs "^ *$1:" /proc/net/dev && {
-			append args "-I $1"
-			append ifaces "$1"
-		}
-	}
-
-	resolve_network() {
-		local ifn
-		config_get ifn "$1" ifname
-		resolve_ifname "$ifn"
-	}
-
-	local net networks
-	config_get networks "$cfg" network
-	for net in $networks; do
-		resolve_network "$net"
-	done
-
-	local ifn ifnames
-	config_get ifnames "$cfg" ifname
-	for ifn in $ifnames; do
-		resolve_ifname "$ifn"
-	done
-
-	local ipaddr
-	config_get ipaddr "$cfg" ipaddr
-	[ -n "$ipaddr" ] && append args "-L $ipaddr"
-
-	local gateway
-	config_get gateway "$cfg" gateway
-	[ -n "$gateway" ] && append args "-G $gateway"
-
-	local expiry # = 30
-	config_get expiry "$cfg" expiry
-	[ -n "$expiry" ] && append args "-t $expiry"
-
-	local retry # = 5
-	config_get retry "$cfg" retry
-	[ -n "$retry" ] && append args "-p $retry"
-
-	local table # = 16800
-	config_get table "$cfg" table
-	[ -n "$table" ] && append args "-T $table"
-
-	local fwd_bcast # = 1
-	config_get_bool fwd_bcast "$cfg" forward_bcast 1
-	[ $fwd_bcast -eq 1 ] && append args "-B"
-
-	local fwd_dhcp # = 1
-	config_get_bool fwd_dhcp "$cfg" forward_dhcp 1
-	[ $fwd_dhcp -eq 1 ] && append args "-D"
-
-	SERVICE_DAEMONIZE=1 \
-	SERVICE_WRITE_PID=1 \
-	SERVICE_PID_FILE="/var/run/$link.pid" \
-	service_start /usr/sbin/relayd $args
-
-	uci_set_state network "$cfg" device "$ifaces"
-
-	env -i ACTION="ifup" DEVICE="$link" INTERFACE="$cfg" PROTO="relay" \
-		/sbin/hotplug-call iface
-}
-
-stop_interface_relay() {
-	local cfg="$1"
-	local link="relay-$cfg"
-
-	env -i ACTION="ifdown" DEVICE="$link" INTERFACE="$cfg" PROTO="relay" \
-		/sbin/hotplug-call iface
-
-	SERVICE_PID_FILE="/var/run/$link.pid" \
-	service_stop /usr/sbin/relayd
-}
-