<?php

/**

 * $Id: rpc.php,v 1.1 2008/05/12 03:10:33 scyrma Exp $

 *

 * @author Moxiecode

 * @copyright Copyright © 2004-2007, Moxiecode Systems AB, All rights reserved.

 */



require_once("./includes/general.php");



// Set RPC response headers

header('Content-Type: text/plain');

header('Content-Encoding: UTF-8');

header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");

header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");

header("Cache-Control: no-store, no-cache, must-revalidate");

header("Cache-Control: post-check=0, pre-check=0", false);

header("Pragma: no-cache");



$raw = "";



// Try param

if (isset($_POST["json_data"]))

	$raw = getRequestParam("json_data");



// Try globals array

if (!$raw && isset($_GLOBALS) && isset($_GLOBALS["HTTP_RAW_POST_DATA"]))

	$raw = $_GLOBALS["HTTP_RAW_POST_DATA"];



// Try globals variable

if (!$raw && isset($HTTP_RAW_POST_DATA))

	$raw = $HTTP_RAW_POST_DATA;



// Try stream

if (!$raw) {

	if (!function_exists('file_get_contents')) {

		$fp = fopen("php://input", "r");

		if ($fp) {

			$raw = "";



			while (!feof($fp))

				$raw = fread($fp, 1024);



			fclose($fp);

		}

	} else

		$raw = "" . file_get_contents("php://input");

}



// No input data

if (!$raw)

	die('{"result":null,"id":null,"error":{"errstr":"Could not get raw post data.","errfile":"","errline":null,"errcontext":"","level":"FATAL"}}');



// Passthrough request to remote server

if (isset($config['general.remote_rpc_url'])) {

	$url = parse_url($config['general.remote_rpc_url']);



	// Setup request

	$req = "POST " . $url["path"] . " HTTP/1.0\r\n";

	$req .= "Connection: close\r\n";

	$req .= "Host: " . $url['host'] . "\r\n";

	$req .= "Content-Length: " . strlen($raw) . "\r\n";

	$req .= "\r\n" . $raw;



	if (!isset($url['port']) || !$url['port'])

		$url['port'] = 80;



	$errno = $errstr = "";



	$socket = fsockopen($url['host'], intval($url['port']), $errno, $errstr, 30);

	if ($socket) {

		// Send request headers

		fputs($socket, $req);



		// Read response headers and data

		$resp = "";

		while (!feof($socket))

				$resp .= fgets($socket, 4096);



		fclose($socket);



		// Split response header/data

		$resp = explode("\r\n\r\n", $resp);

		echo $resp[1]; // Output body

	}



	die();

}



// Get JSON data

$json = new Moxiecode_JSON();

$input = $json->decode($raw);



// Execute RPC

if (isset($config['general.engine'])) {

	$spellchecker = new $config['general.engine']($config);

	$result = call_user_func_array(array($spellchecker, $input['method']), $input['params']);

} else

	die('{"result":null,"id":null,"error":{"errstr":"You must choose an spellchecker engine in the config.php file.","errfile":"","errline":null,"errcontext":"","level":"FATAL"}}');



// Request and response id should always be the same

$output = array(

	"id" => $input->id,

	"result" => $result,

	"error" => null

);



// Return JSON encoded string

echo $json->encode($output);



?>