pianod: Add Pandora Radio player daemon

* Integrate as OpenWrt daemon
   * Build with PolarSSL (replaces GNUTLS)
   * Add optional client WebUI
   * Fix some socket failure handling and segfaults

Signed-off-by: Ted Hess <thess@kitschensync.net>

sound/pianod/files/pianod.init

@@ -0,0 +1,42 @@
+#!/bin/sh /etc/rc.common
+# Copyright (C) 2015 OpenWrt.org
+
+NAME=pianod
+START=95
+
+USE_PROCD=1
+
+PD_USER=$NAME
+PD_STARTSCRIPT=/etc/$NAME/startscript
+PD_PASSWDFILE=/etc/$NAME/users
+PD_WEBUI=/www/$NAME
+
+start_service() {
+	# Take group ownership of audio devices
+	chown root:$NAME /dev/snd/* /dev/mixer /dev/dsp
+	chmod 664 /dev/snd/* /dev/mixer /dev/dsp
+
+	procd_open_instance
+
+	procd_set_param command "/usr/bin/$NAME"
+
+	procd_append_param command -n $PD_USER
+	procd_append_param command -i "$PD_STARTSCRIPT"
+	procd_append_param command -u "$PD_PASSWDFILE"
+	[ -d "$PD_WEBUI" ] && procd_append_param command -c "$PD_WEBUI"
+	# No HTTPS support without certificates
+	procd_append_param command -s 0
+
+	procd_close_instance
+}
+
+# Wait for service to exit and release sockets
+reload_service() {
+	stop
+	sleep 2
+	start
+}
+
+restart() {
+	reload_service
+}