baresip: add procd init script

  - add procd init script
  - script starts the daemon as user "baresip" instead of root
  - add /etc/default/baresip
  - add example configuration into /etc/baresip
  - add conffiles definition
  - prevent autostart after upgrade by using ENABLE_BARESIP variable in
    /etc/default/baresip

Signed-off-by: Sebastian Kemper <sebastian_ml@gmx.net>

net/baresip/Makefile

@@ -65,6 +65,7 @@ define Package/baresip
 $(call Package/baresip/Default)
   TITLE:=Portable and modular SIP User-Agent with A/V support
   DEPENDS:=+libre +librem
+  USERID:=$(PKG_NAME)=374:$(PKG_NAME)=374
   MENU:=1
 endef
 
@@ -120,10 +121,38 @@ define Package/baresip/install
 		$(1)/usr/lib/baresip/modules
 	$(INSTALL_DIR) $(1)/usr/share/baresip
 	$(CP) $(PKG_INSTALL_DIR)/usr/share/baresip/* $(1)/usr/share/baresip
+	$(INSTALL_DIR) $(1)/etc/baresip
+	$(INSTALL_CONF) $(PKG_BUILD_DIR)/docs/examples/{accounts,config,contacts} $(1)/etc/baresip
+	$(INSTALL_DIR) $(1)/etc/default
+	$(INSTALL_CONF) ./files/baresip.default $(1)/etc/default/baresip
 	$(INSTALL_DIR) $(1)/etc/init.d
 	$(INSTALL_BIN) ./files/baresip.init $(1)/etc/init.d/baresip
 endef
 
+define Package/baresip/conffiles
+/etc/baresip/accounts
+/etc/baresip/config
+/etc/baresip/contacts
+/etc/default/baresip
+/etc/init.d/baresip
+endef
+
+define Package/baresip/postinst
+#!/bin/sh
+if [ -z "$${IPKG_INSTROOT}" ]; then
+  chown $(PKG_NAME):$(PKG_NAME) \
+    /etc/baresip/accounts \
+    /etc/baresip/config \
+    /etc/baresip/contacts
+
+  # Prevent $(PKG_NAME) from auto-starting after an upgrade. The modules may
+  # not be upgraded yet and the user configuration may need a revision.
+  sed -i '/^ENABLE_BARESIP="yes"/s/^/#/' \
+    /etc/default/$(PKG_NAME)
+fi
+exit 0
+endef
+
 ##################
 # bareSIP modules
 # 1. Name

net/baresip/files/baresip.default

+### bareSIP init configuration ###
+
+# Uncomment once you verified your configuration, otherwise the init script will
+# not start bareSIP.
+#ENABLE_BARESIP="yes"
+
+# The following is added to the command line when starting bareSIP:
+OPTIONS=""
+
+# The configuration for the daemon is done in /etc/baresip!

net/baresip/files/baresip.init

 #!/bin/sh /etc/rc.common
-# Copyright (C) 2010-2011 OpenWrt.org
-# Copyright (C) 2010 Alfred E. Heggestad
-#
+# Copyright (C) 2017 OpenWrt.org
 
 START=92
 
-start() {
-	service_start /usr/bin/baresip -d
+USE_PROCD=1
+
+#PROCD_DEBUG=1
+
+DAEMON=baresip
+DEFAULT=/etc/default/$DAEMON
+LOGGER="/usr/bin/logger -p user.err -s -t $DAEMON"
+OPTIONS=
+PROG=/usr/bin/$DAEMON
+TIMEOUT=30
+
+[ -f $DEFAULT ] && . $DEFAULT
+
+start_service() {
+  local dir=
+
+  if [ "$ENABLE_BARESIP" != yes ]; then
+    $LOGGER User configuration incomplete - not starting $DAEMON
+    $LOGGER Check ENABLE_BARESIP in $DEFAULT
+    exit 1
+  fi
+
+  procd_open_instance
+  procd_set_param command $PROG
+  procd_append_param command \
+    -f /etc/$DAEMON \
+    $OPTIONS
+  procd_set_param pidfile /var/run/${DAEMON}.pid
+  # forward stderr to logd
+  procd_set_param stderr 1
+  # forward stdout to logd
+  #procd_set_param stdout 1
+  procd_set_param user $DAEMON
+  procd_close_instance
 }
 
-stop() {
-	service_stop /usr/bin/baresip
+stop_service() {
+  local retval=
+  local mypid=
+  local timeout=$TIMEOUT
+
+  pgrep $DAEMON &> /dev/null
+  [ $? -ne 0 ] && exit 0
+
+  [ -f /var/run/${DAEMON}.pid ]
+  retval=$?
+
+  # init script could find itself in a scenario where baresip was started
+  # very recently, so make it wait a while for a pid file to appear
+  while [ $retval -ne 0 -a $timeout -gt 0 ]; do
+    sleep 1
+    [ -f /var/run/${DAEMON}.pid ]
+    retval=$?
+    timeout=$(($timeout-1))
+  done
+
+  [ $retval -eq 0 ] || {
+    $LOGGER PID file does not exist
+    exit 1
+  }
+
+  mypid=$(cat /var/run/${DAEMON}.pid)
+
+  [ "$mypid" -gt 1 ] 2> /dev/null || {
+    $LOGGER PID file contains garbage
+    exit 1
+  }
+
+  timeout=$TIMEOUT
+  kill $mypid 2>/dev/null
+  pgrep $DAEMON | grep -w $mypid &>/dev/null
+  retval=$?
+
+  while [ $retval -eq 0 -a $timeout -gt 0 ]; do
+    sleep 10
+    pgrep $DAEMON | grep -w $mypid &>/dev/null
+    retval=$?
+    [ $retval -eq 0 ] && kill $mypid 2>/dev/null
+    timeout=$(($timeout-10))
+  done
+
+  [ $retval -ne 1 ] && {
+    $LOGGER Failed to stop $DAEMON
+    exit 1
+  }
 }