bandwidthd-php: PHP files to graph bandwidthd data in a postgresql

database
Signed-off-by: Jean-Michel Lacroix <lacroix@lepine-lacroix.info>
bandwidthd-php is a set of PHP files that allows to graph bandwidthd
data stored in a postgresql database.  This bandwidthd data can be
generated using bandwidthd-pgsql in OpenWRT or LEDE or with
bandwidthd on different OS (Windows, Linux for example).

Addition of a config file and an init file.
Modification of the Makefile to take in account the changes above
Signed-off-by: Jean-Michel Lacroix <lacroix@lepine-lacroix.info>

utils/bandwidthd-php/files/bandwidthd-php.init

@@ -0,0 +1,75 @@
+#!/bin/sh /etc/rc.common
+# Copyright (C) 2006-2016 OpenWrt.org
+
+START=99
+
+USE_PROCD=1
+
+CONFIGNAME="bandwidthd-php"
+CONFIGFILE="/var/etc/bandwidthd-php.conf"
+
+config_cb() {
+	local cfg_type="$1"
+	local cfg_name="$2"
+	case "$cfg_type" in
+	        $CONFIGNAME)
+	                append cfgs "$cfg_name"
+	        ;;
+	esac
+}
+
+export_number() {
+	local option="$1"
+	local section="$2"
+	local _loctmp
+	paramstr=""
+	config_get _loctmp "$section" "$option"
+	if [ -n "$_loctmp" ]; then
+		paramstr="${_loctmp}"
+	fi
+}
+
+export_string() {
+	local option="$1"
+	local section="$2"
+	local _loctmp
+	paramstr=""
+	config_get _loctmp "$section" "$option"
+	if [ -n "$_loctmp" ]; then
+		paramstr="${_loctmp}"
+	fi
+}
+
+service_triggers()
+{
+        procd_add_reload_trigger $CONFIGNAME
+}
+
+
+start_service() {
+	local conffile="<?php\n// auto-generated config file from /etc/config/${CONFIGNAME}\n"
+        rm -f $CONFIGFILE
+        touch $CONFIGFILE
+
+	config_load $CONFIGNAME
+	for cfg in $cfgs; do
+		export_number dflt_width $cfg
+		conffile="${conffile}define(\"DFLT_WIDTH\", ${paramstr:-"900"});\n"
+
+		export_number dflt_height $cfg
+       		conffile="${conffile}define(\"DFLT_HEIGHT\", ${paramstr:-"256"});\n"
+
+		export_string dflt_interval $cfg
+		conffile="${conffile}define(\"DFLT_INTERVAL\", ${paramstr:-"INT_DAILY"});\n\n"'$db_connect_string = "host='
+
+		export_string host $cfg
+		conffile="${conffile}${paramstr:-"127.0.0.1"} user="
+
+		export_string user $cfg
+		conffile="${conffile}${paramstr:-"postgres"} dbname="
+
+		export_string dbname $cfg
+		conffile="${conffile}${paramstr:-"bandwidthd"}"'"'"\n?>"
+		[ -n "$conffile" ] && echo -e "$conffile" >>$CONFIGFILE
+	done
+}