<?php
/**
* @author Ma Bingyao(andot@ujn.edu.cn)
* @copyright CoolCode.CN
* @package PHP_PHPRPC_SERVER
* @version 2.1
* @last_update 2006-08-10
* @link http://www.coolcode.cn/?p=143
*
* Example usage:
*
* server.php
* <?php
* include('phprpc_server.php');
* function add($a, $b) {
* return $a + $b;
* }
* function sub($a, $b) {
* return $a - $b;
* }
* new phprpc_server(array('add', 'sub'));
* ?>
*/
if (!function_exists("ob_get_clean")) {
function ob_get_clean() {
$ob_contents = ob_get_contents();
while(ob_get_length() !== false) @ob_end_clean();
return $ob_contents;
}
}
@ob_start();
class phprpc_server {
var $callback;
var $encode;
var $ref;
var $encrypt;
var $debug;
var $errno;
var $errstr;
var $functions;
function tolower(&$func, $keys) {
$func = strtolower($func);
}
function addjsslashes($str, $flag = true) {
if ($flag) {
$str = addcslashes($str, "\0..\006\010..\012\014..\037\042\047\134\177..\377");
}
else {
$str = addcslashes($str, "\0..\006\010..\012\014..\037\042\047\134");
}
return str_replace(array(chr(7), chr(11)), array('\007', '\013'), $str);
}
function error_handler($errno, $errstr, $errfile, $errline) {
if ($this->debug) {
$errstr .= "\nfile: $errfile\nline: $errline";
}
if (($errno == E_ERROR) or ($errno == E_CORE_ERROR) or
($errno == E_COMPILE_ERROR) or ($errno == E_USER_ERROR)) {
$output = ob_get_clean();
echo "phprpc_errno=\"$errno\";\r\n";
if ($this->encode) {
echo "phprpc_errstr=\"" . base64_encode($errstr) . "\";\r\n";
echo "phprpc_output=\"" . base64_encode($output) . "\";\r\n";
}
else {
echo "phprpc_errstr=\"" . $this->addjsslashes($errstr, false) . "\";\r\n";
echo "phprpc_output=\"" . $this->addjsslashes($output, false) . "\";\r\n";
}
echo $this->callback;
exit();
}
else {
if (($errno == E_NOTICE) or ($errno == E_USER_NOTICE)) {
if ($this->errno == 0) {
$this->errno = $errno;
$this->errstr = $errstr;
}
}
else {
if (($this->errno == 0) or
($this->errno == E_NOTICE) or
($this->errno == E_USER_NOTICE)) {
$this->errno = $errno;
$this->errstr = $errstr;
}
}
}
return true;
}
function call($function, &$args) {
$arguments = array();
for ($i = 0; $i < count($args); $i++) {
$arguments[$i] = &$args[$i];
}
return call_user_func_array($function, $arguments);
}
function get_request($name) {
$result = $_REQUEST[$name];
if (get_magic_quotes_gpc()) {
$result = stripslashes($result);
}
return $result;
}
function phprpc_server($functions = null, $debug = false, $obj = null, $charset = "utf-8") {
$this->functions = array();
if ($functions != null) {
$this->add($functions, $obj);
$this->start($debug, $charset);
}
}
function add($functions, $obj = null) {
if ($functions == null) return false;
if (is_string($functions)) {
$functions = array($functions);
}
$this->functions[] = array('functions' => $functions, 'obj' => $obj);
return true;
}
function start($debug = false, $charset = "utf-8") {
while(ob_get_length() !== false) @ob_end_clean();
@ob_start();
header("HTTP/1.1 200 OK");
header("Connection: close");
header("Content-Type: text/plain; charset=$charset");
header("X-Powered-By: PHPRPC Server/2.1");
header("Date: " . gmdate("D, d M Y H:i:s") . " 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: pre-check=0, post-check=0, max-age=0');
header('Content-Encoding: none');
$this->debug = $debug;
$this->encode = true;
if (isset($_REQUEST['phprpc_encode'])) {
$this->encode = strtolower($this->get_request('phprpc_encode'));
if ($this->encode == "false") {
$this->encode = false;
}
}
if (isset($_REQUEST['phprpc_callback'])) {
$this->callback = base64_decode($this->get_request('phprpc_callback'));
}
else {
$this->callback = "";
}
$this->ref = true;
if (isset($_REQUEST['phprpc_ref'])) {
$this->ref = strtolower($this->get_request('phprpc_ref'));
if ($this->ref == "false") {
$this->ref = false;
}
}
$this->errno = 0;
$this->errstr = "";
error_reporting(0);
set_error_handler(array(&$this, 'error_handler'));
$this->encrypt = false;
if (isset($_REQUEST['phprpc_encrypt'])) {
$this->encrypt = $this->get_request('phprpc_encrypt');
if ($this->encrypt === "true") $this->encrypt = true;
if ($this->encrypt === "false") $this->encrypt = false;
if ($this->encrypt != false) {
require_once('keypair.php');
require_once('xxtea.php');
session_start();
}
}
$functions = array();
$obj = array();
foreach ($this->functions as $value) {
foreach ($value['functions'] as $function) {
$functions[] = $function;
$objects[] = $value['obj'];
}
}
if (isset($_REQUEST['phprpc_func'])) {
array_walk($functions, array(&$this, 'tolower'));
$function = strtolower($this->get_request('phprpc_func'));
if (in_array($function, $functions)) {
if (isset($_REQUEST['phprpc_args'])) {
$arguments = base64_decode($this->get_request('phprpc_args'));
if ($this->encrypt > 0) {
if (isset($_SESSION['PHPRPC_ENCRYPT']['k'])) {
$arguments = xxtea_decrypt($arguments, $_SESSION['PHPRPC_ENCRYPT']['k']);
}
else {
$this->errno = E_ERROR;
$this->errstr = "Can't find the key for decryption.";
}
}
$arguments = unserialize($arguments);
}
else {
$arguments = array();
}
$obj = $objects[array_search($function, $functions)];
if ($obj != null && $obj != "") {
if (is_object($obj)) {
$function = array(&$obj, $function);
}
else if (is_string($obj)) {
$function = array($obj, $function);
}
}
if ($this->ref) {
$result = serialize($this->call($function, $arguments));
$arguments = serialize($arguments);
}
else {
$result = serialize(call_user_func_array($function, $arguments));
}
if ($this->encrypt > 0) {
if (isset($_SESSION['PHPRPC_ENCRYPT']['k'])) {
if ($this->encrypt > 1) {
$result = xxtea_encrypt($result, $_SESSION['PHPRPC_ENCRYPT']['k']);
}
if ($this->ref) {
$arguments = xxtea_encrypt($arguments, $_SESSION['PHPRPC_ENCRYPT']['k']);
}
}
else {
$this->errno = E_ERROR;
$this->errstr = "Can't find the key for encryption.";
}
}
if ($this->encode) {
$result = base64_encode($result);
if ($this->ref) {
$arguments = base64_encode($arguments);
}
}
else {
$result = $this->addjsslashes($result);
if ($this->ref) {
$arguments = $this->addjsslashes($arguments);
}
}
}
else {
$this->errno = E_ERROR;
$this->errstr = "Can't find this function $function().";
}
$output = ob_get_clean();
if ($this->errno != E_ERROR) {
echo "phprpc_result=\"$result\";\r\n";
if ($this->ref) {
echo "phprpc_args=\"$arguments\";\r\n";
}
}
echo "phprpc_errno=\"{$this->errno}\";\r\n";
if ($this->encode) {
echo "phprpc_errstr=\"" . base64_encode($this->errstr) . "\";\r\n";
echo "phprpc_output=\"" . base64_encode($output) . "\";\r\n";
}
else {
echo "phprpc_errstr=\"" . $this->addjsslashes($this->errstr, false) ."\";\r\n";
echo "phprpc_output=\"" . $this->addjsslashes($output, false) . "\";\r\n";
}
}
else {
if ($this->encrypt != false) {
require_once('bcmath.php');
if (extension_loaded('big_int')) {
if ($this->encrypt === true) {
$encrypt = $phprpc_keypair[mt_rand(0, count($phprpc_keypair) - 1)];
$_SESSION['PHPRPC_ENCRYPT'] = $encrypt;
$_SESSION['PHPRPC_ENCRYPT']['x'] = bi_to_str(bi_set_bit(bi_rand(127), 126));
$encrypt['y'] = bi_to_str(bi_powmod(bi_from_str($_SESSION['PHPRPC_ENCRYPT']['g']),
bi_from_str($_SESSION['PHPRPC_ENCRYPT']['x']),
bi_from_str($_SESSION['PHPRPC_ENCRYPT']['p'])));
}
else {
$_SESSION['PHPRPC_ENCRYPT']['y'] = $this->encrypt;
$key = bcdec2str(bi_to_str(bi_powmod(bi_from_str($_SESSION['PHPRPC_ENCRYPT']['y']),
bi_from_str($_SESSION['PHPRPC_ENCRYPT']['x']),
bi_from_str($_SESSION['PHPRPC_ENCRYPT']['p']))));
$_SESSION['PHPRPC_ENCRYPT']['k'] = str_repeat("\0", 16 - strlen($key)) . $key;
$encrypt = true;
}
}
else {
if ($this->encrypt === true) {
$encrypt = $phprpc_keypair[mt_rand(0, count($phprpc_keypair) - 1)];
$_SESSION['PHPRPC_ENCRYPT'] = $encrypt;
$_SESSION['PHPRPC_ENCRYPT']['x'] = bcrand(127, 1);
$encrypt['y'] = bcpowmod($_SESSION['PHPRPC_ENCRYPT']['g'],
$_SESSION['PHPRPC_ENCRYPT']['x'],
$_SESSION['PHPRPC_ENCRYPT']['p']);
}
else {
$_SESSION['PHPRPC_ENCRYPT']['y'] = $this->encrypt;
$key = bcdec2str(bcpowmod($_SESSION['PHPRPC_ENCRYPT']['y'],
$_SESSION['PHPRPC_ENCRYPT']['x'],
$_SESSION['PHPRPC_ENCRYPT']['p']));
$_SESSION['PHPRPC_ENCRYPT']['k'] = str_repeat("\0", 16 - strlen($key)) . $key;
$encrypt = true;
}
}
if ($this->encode) {
echo "phprpc_encrypt=\"" . base64_encode(serialize($encrypt)) . "\";\r\n";
}
else {
echo "phprpc_encrypt=\"" . $this->addjsslashes(serialize($encrypt)) . "\";\r\n";
}
}
if ($this->encode) {
echo "phprpc_functions=\"" . base64_encode(serialize($functions)) . "\";\r\n";
}
else {
echo "phprpc_functions=\"" . $this->addjsslashes(serialize($functions)) . "\";\r\n";
}
}
echo $this->callback;
restore_error_handler();
ob_end_flush();
}
}
?>
