3 * IXR - The Incutio XML-RPC Library
5 * Copyright (c) 2010, Incutio Ltd.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions are met:
11 * - Redistributions of source code must retain the above copyright notice,
12 * this list of conditions and the following disclaimer.
13 * - Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * - Neither the name of Incutio Ltd. nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
21 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
22 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
24 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
25 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
26 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
27 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
28 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
30 * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
35 * @copyright Incutio Ltd 2010 (http://www.incutio.com)
36 * @version 1.7.4 7th September 2010
37 * @author Simon Willison
38 * @link http://scripts.incutio.com/xmlrpc/ Site/manual
39 * @license http://www.opensource.org/licenses/bsd-license.php BSD
52 function IXR_Value($data, $type = false)
56 $type = $this->calculateType();
59 if ($type == 'struct') {
60 // Turn all the values in the array in to new IXR_Value objects
61 foreach ($this->data as $key => $value) {
62 $this->data[$key] = new IXR_Value($value);
65 if ($type == 'array') {
66 for ($i = 0, $j = count($this->data); $i < $j; $i++) {
67 $this->data[$i] = new IXR_Value($this->data[$i]);
72 function calculateType()
74 if ($this->data === true || $this->data === false) {
77 if (is_integer($this->data)) {
80 if (is_double($this->data)) {
84 // Deal with IXR object types base64 and date
85 if (is_object($this->data) && is_a($this->data, 'IXR_Date')) {
88 if (is_object($this->data) && is_a($this->data, 'IXR_Base64')) {
92 // If it is a normal PHP object convert it in to a struct
93 if (is_object($this->data)) {
94 $this->data = get_object_vars($this->data);
97 if (!is_array($this->data)) {
101 // We have an array - is it an array or a struct?
102 if ($this->isStruct($this->data)) {
111 // Return XML for this value
112 switch ($this->type) {
114 return '<boolean>'.(($this->data) ? '1' : '0').'</boolean>';
117 return '<int>'.$this->data.'</int>';
120 return '<double>'.$this->data.'</double>';
123 return '<string>'.htmlspecialchars($this->data).'</string>';
126 $return = '<array><data>'."\n";
127 foreach ($this->data as $item) {
128 $return .= ' <value>'.$item->getXml()."</value>\n";
130 $return .= '</data></array>';
134 $return = '<struct>'."\n";
135 foreach ($this->data as $name => $value) {
136 $name = htmlspecialchars($name);
137 $return .= " <member><name>$name</name><value>";
138 $return .= $value->getXml()."</value></member>\n";
140 $return .= '</struct>';
145 return $this->data->getXml();
152 * Checks whether or not the supplied array is a struct or not
154 * @param array $array
157 function isStruct($array)
160 foreach ($array as $key => $value) {
161 if ((string)$key != (string)$expected) {
180 var $messageType; // methodCall / methodResponse / fault
186 // Current variable stacks
187 var $_arraystructs = array(); // The stack used to keep track of the current array/struct
188 var $_arraystructstypes = array(); // Stack keeping track of if things are structs or array
189 var $_currentStructName = array(); // A stack as well
193 var $_currentTagContents;
197 function IXR_Message($message)
199 $this->message =& $message;
204 // first remove the XML declaration
205 // merged from WP #10698 - this method avoids the RAM usage of preg_replace on very large messages
206 $header = preg_replace( '/<\?xml.*?\?'.'>/s', '', substr( $this->message, 0, 100 ), 1 );
207 $this->message = trim( substr_replace( $this->message, $header, 0, 100 ) );
208 if ( '' == $this->message ) {
212 // Then remove the DOCTYPE
213 $header = preg_replace( '/^<!DOCTYPE[^>]*+>/i', '', substr( $this->message, 0, 200 ), 1 );
214 $this->message = trim( substr_replace( $this->message, $header, 0, 200 ) );
215 if ( '' == $this->message ) {
219 // Check that the root tag is valid
220 $root_tag = substr( $this->message, 0, strcspn( substr( $this->message, 0, 20 ), "> \t\r\n" ) );
221 if ( '<!DOCTYPE' === strtoupper( $root_tag ) ) {
224 if ( ! in_array( $root_tag, array( '<methodCall', '<methodResponse', '<fault' ) ) ) {
228 // Bail if there are too many elements to parse
229 $element_limit = 30000;
230 if ( function_exists( 'apply_filters' ) ) {
232 * Filter the number of elements to parse in an XML-RPC response.
236 * @param int $element_limit Default elements limit.
238 $element_limit = apply_filters( 'xmlrpc_element_limit', $element_limit );
240 if ( $element_limit && 2 * $element_limit < substr_count( $this->message, '<' ) ) {
244 $this->_parser = xml_parser_create();
245 // Set XML parser to take the case of tags in to account
246 xml_parser_set_option($this->_parser, XML_OPTION_CASE_FOLDING, false);
247 // Set XML parser callback functions
248 xml_set_object($this->_parser, $this);
249 xml_set_element_handler($this->_parser, 'tag_open', 'tag_close');
250 xml_set_character_data_handler($this->_parser, 'cdata');
251 $chunk_size = 262144; // 256Kb, parse in chunks to avoid the RAM usage on very large messages
254 if (strlen($this->message) <= $chunk_size) {
257 $part = substr($this->message, 0, $chunk_size);
258 $this->message = substr($this->message, $chunk_size);
259 if (!xml_parse($this->_parser, $part, $final)) {
266 xml_parser_free($this->_parser);
268 // Grab the error messages, if any
269 if ($this->messageType == 'fault') {
270 $this->faultCode = $this->params[0]['faultCode'];
271 $this->faultString = $this->params[0]['faultString'];
276 function tag_open($parser, $tag, $attr)
278 $this->_currentTagContents = '';
279 $this->currentTag = $tag;
282 case 'methodResponse':
284 $this->messageType = $tag;
286 /* Deal with stacks of arrays and structs */
287 case 'data': // data is to all intents and puposes more interesting than array
288 $this->_arraystructstypes[] = 'array';
289 $this->_arraystructs[] = array();
292 $this->_arraystructstypes[] = 'struct';
293 $this->_arraystructs[] = array();
298 function cdata($parser, $cdata)
300 $this->_currentTagContents .= $cdata;
303 function tag_close($parser, $tag)
309 $value = (int)trim($this->_currentTagContents);
313 $value = (double)trim($this->_currentTagContents);
317 $value = (string)trim($this->_currentTagContents);
320 case 'dateTime.iso8601':
321 $value = new IXR_Date(trim($this->_currentTagContents));
325 // "If no type is indicated, the type is string."
326 if (trim($this->_currentTagContents) != '') {
327 $value = (string)$this->_currentTagContents;
332 $value = (boolean)trim($this->_currentTagContents);
336 $value = base64_decode($this->_currentTagContents);
339 /* Deal with stacks of arrays and structs */
342 $value = array_pop($this->_arraystructs);
343 array_pop($this->_arraystructstypes);
347 array_pop($this->_currentStructName);
350 $this->_currentStructName[] = trim($this->_currentTagContents);
353 $this->methodName = trim($this->_currentTagContents);
358 if (count($this->_arraystructs) > 0) {
359 // Add value to struct or array
360 if ($this->_arraystructstypes[count($this->_arraystructstypes)-1] == 'struct') {
362 $this->_arraystructs[count($this->_arraystructs)-1][$this->_currentStructName[count($this->_currentStructName)-1]] = $value;
365 $this->_arraystructs[count($this->_arraystructs)-1][] = $value;
368 // Just add as a parameter
369 $this->params[] = $value;
372 $this->_currentTagContents = '';
385 var $callbacks = array();
389 function IXR_Server($callbacks = false, $data = false, $wait = false)
391 $this->setCapabilities();
393 $this->callbacks = $callbacks;
395 $this->setCallbacks();
401 function serve($data = false)
404 if (isset($_SERVER['REQUEST_METHOD']) && $_SERVER['REQUEST_METHOD'] !== 'POST') {
405 if ( function_exists( 'status_header' ) ) {
406 status_header( 405 ); // WP #20986
407 header( 'Allow: POST' );
409 header('Content-Type: text/plain'); // merged from WP #9093
410 die('XML-RPC server accepts POST requests only.');
413 global $HTTP_RAW_POST_DATA;
414 if (empty($HTTP_RAW_POST_DATA)) {
415 // workaround for a bug in PHP 5.2.2 - http://bugs.php.net/bug.php?id=41293
416 $data = file_get_contents('php://input');
418 $data =& $HTTP_RAW_POST_DATA;
421 $this->message = new IXR_Message($data);
422 if (!$this->message->parse()) {
423 $this->error(-32700, 'parse error. not well formed');
425 if ($this->message->messageType != 'methodCall') {
426 $this->error(-32600, 'server error. invalid xml-rpc. not conforming to spec. Request must be a methodCall');
428 $result = $this->call($this->message->methodName, $this->message->params);
430 // Is the result an error?
431 if (is_a($result, 'IXR_Error')) {
432 $this->error($result);
436 $r = new IXR_Value($result);
437 $resultxml = $r->getXml();
456 function call($methodname, $args)
458 if (!$this->hasMethod($methodname)) {
459 return new IXR_Error(-32601, 'server error. requested method '.$methodname.' does not exist.');
461 $method = $this->callbacks[$methodname];
463 // Perform the callback and send the response
464 if (count($args) == 1) {
465 // If only one parameter just send that instead of the whole array
469 // Are we dealing with a function or a method?
470 if (is_string($method) && substr($method, 0, 5) == 'this:') {
471 // It's a class method - check it exists
472 $method = substr($method, 5);
473 if (!method_exists($this, $method)) {
474 return new IXR_Error(-32601, 'server error. requested class method "'.$method.'" does not exist.');
478 $result = $this->$method($args);
480 // It's a function - does it exist?
481 if (is_array($method)) {
482 if (!is_callable(array($method[0], $method[1]))) {
483 return new IXR_Error(-32601, 'server error. requested object method "'.$method[1].'" does not exist.');
485 } else if (!function_exists($method)) {
486 return new IXR_Error(-32601, 'server error. requested function "'.$method.'" does not exist.');
490 $result = call_user_func($method, $args);
495 function error($error, $message = false)
497 // Accepts either an error object or an error code and message
498 if ($message && !is_object($error)) {
499 $error = new IXR_Error($error, $message);
501 $this->output($error->getXml());
504 function output($xml)
506 $charset = function_exists('get_option') ? get_option('blog_charset') : '';
508 $xml = '<?xml version="1.0" encoding="'.$charset.'"?>'."\n".$xml;
510 $xml = '<?xml version="1.0"?>'."\n".$xml;
511 $length = strlen($xml);
512 header('Connection: close');
513 header('Content-Length: '.$length);
515 header('Content-Type: text/xml; charset='.$charset);
517 header('Content-Type: text/xml');
518 header('Date: '.date('r'));
523 function hasMethod($method)
525 return in_array($method, array_keys($this->callbacks));
528 function setCapabilities()
530 // Initialises capabilities array
531 $this->capabilities = array(
533 'specUrl' => 'http://www.xmlrpc.com/spec',
536 'faults_interop' => array(
537 'specUrl' => 'http://xmlrpc-epi.sourceforge.net/specs/rfc.fault_codes.php',
538 'specVersion' => 20010516
540 'system.multicall' => array(
541 'specUrl' => 'http://www.xmlrpc.com/discuss/msgReader$1208',
547 function getCapabilities($args)
549 return $this->capabilities;
552 function setCallbacks()
554 $this->callbacks['system.getCapabilities'] = 'this:getCapabilities';
555 $this->callbacks['system.listMethods'] = 'this:listMethods';
556 $this->callbacks['system.multicall'] = 'this:multiCall';
559 function listMethods($args)
561 // Returns a list of methods - uses array_reverse to ensure user defined
562 // methods are listed before server defined methods
563 return array_reverse(array_keys($this->callbacks));
566 function multiCall($methodcalls)
568 // See http://www.xmlrpc.com/discuss/msgReader$1208
570 foreach ($methodcalls as $call) {
571 $method = $call['methodName'];
572 $params = $call['params'];
573 if ($method == 'system.multicall') {
574 $result = new IXR_Error(-32600, 'Recursive calls to system.multicall are forbidden');
576 $result = $this->call($method, $params);
578 if (is_a($result, 'IXR_Error')) {
580 'faultCode' => $result->code,
581 'faultString' => $result->message
584 $return[] = array($result);
603 function IXR_Request($method, $args)
605 $this->method = $method;
608 <?xml version="1.0"?>
610 <methodName>{$this->method}</methodName>
614 foreach ($this->args as $arg) {
615 $this->xml .= '<param><value>';
616 $v = new IXR_Value($arg);
617 $this->xml .= $v->getXml();
618 $this->xml .= "</value></param>\n";
620 $this->xml .= '</params></methodCall>';
625 return strlen($this->xml);
648 var $message = false;
651 var $headers = array();
653 // Storage place for an error message
656 function IXR_Client($server, $path = false, $port = 80, $timeout = 15)
659 // Assume we have been given a URL instead
660 $bits = parse_url($server);
661 $this->server = $bits['host'];
662 $this->port = isset($bits['port']) ? $bits['port'] : 80;
663 $this->path = isset($bits['path']) ? $bits['path'] : '/';
665 // Make absolutely sure we have a path
670 if ( ! empty( $bits['query'] ) ) {
671 $this->path .= '?' . $bits['query'];
674 $this->server = $server;
678 $this->useragent = 'The Incutio XML-RPC PHP Library';
679 $this->timeout = $timeout;
684 $args = func_get_args();
685 $method = array_shift($args);
686 $request = new IXR_Request($method, $args);
687 $length = $request->getLength();
688 $xml = $request->getXml();
690 $request = "POST {$this->path} HTTP/1.0$r";
692 // Merged from WP #8145 - allow custom headers
693 $this->headers['Host'] = $this->server;
694 $this->headers['Content-Type'] = 'text/xml';
695 $this->headers['User-Agent'] = $this->useragent;
696 $this->headers['Content-Length']= $length;
698 foreach( $this->headers as $header => $value ) {
699 $request .= "{$header}: {$value}{$r}";
705 // Now send the request
707 echo '<pre class="ixr_request">'.htmlspecialchars($request)."\n</pre>\n\n";
710 if ($this->timeout) {
711 $fp = @fsockopen($this->server, $this->port, $errno, $errstr, $this->timeout);
713 $fp = @fsockopen($this->server, $this->port, $errno, $errstr);
716 $this->error = new IXR_Error(-32300, 'transport error - could not open socket');
719 fputs($fp, $request);
722 $gotFirstLine = false;
723 $gettingHeaders = true;
725 $line = fgets($fp, 4096);
726 if (!$gotFirstLine) {
727 // Check line for '200'
728 if (strstr($line, '200') === false) {
729 $this->error = new IXR_Error(-32300, 'transport error - HTTP status code was not 200');
732 $gotFirstLine = true;
734 if (trim($line) == '') {
735 $gettingHeaders = false;
737 if (!$gettingHeaders) {
738 // merged from WP #12559 - remove trim
742 $debugContents .= $line;
746 echo '<pre class="ixr_response">'.htmlspecialchars($debugContents)."\n</pre>\n\n";
749 // Now parse what we've got back
750 $this->message = new IXR_Message($contents);
751 if (!$this->message->parse()) {
753 $this->error = new IXR_Error(-32700, 'parse error. not well formed');
757 // Is the message a fault?
758 if ($this->message->messageType == 'fault') {
759 $this->error = new IXR_Error($this->message->faultCode, $this->message->faultString);
763 // Message must be OK
767 function getResponse()
769 // methodResponses can only have one param - return that
770 return $this->message->params[0];
775 return (is_object($this->error));
778 function getErrorCode()
780 return $this->error->code;
783 function getErrorMessage()
785 return $this->error->message;
801 function IXR_Error($code, $message)
804 $this->message = htmlspecialchars($message);
815 <name>faultCode</name>
816 <value><int>{$this->code}</int></value>
819 <name>faultString</name>
820 <value><string>{$this->message}</string></value>
847 function IXR_Date($time)
849 // $time can be a PHP timestamp or an ISO one
850 if (is_numeric($time)) {
851 $this->parseTimestamp($time);
853 $this->parseIso($time);
857 function parseTimestamp($timestamp)
859 $this->year = date('Y', $timestamp);
860 $this->month = date('m', $timestamp);
861 $this->day = date('d', $timestamp);
862 $this->hour = date('H', $timestamp);
863 $this->minute = date('i', $timestamp);
864 $this->second = date('s', $timestamp);
865 $this->timezone = '';
868 function parseIso($iso)
870 $this->year = substr($iso, 0, 4);
871 $this->month = substr($iso, 4, 2);
872 $this->day = substr($iso, 6, 2);
873 $this->hour = substr($iso, 9, 2);
874 $this->minute = substr($iso, 12, 2);
875 $this->second = substr($iso, 15, 2);
876 $this->timezone = substr($iso, 17);
881 return $this->year.$this->month.$this->day.'T'.$this->hour.':'.$this->minute.':'.$this->second.$this->timezone;
886 return '<dateTime.iso8601>'.$this->getIso().'</dateTime.iso8601>';
889 function getTimestamp()
891 return mktime($this->hour, $this->minute, $this->second, $this->month, $this->day, $this->year);
905 function IXR_Base64($data)
912 return '<base64>'.base64_encode($this->data).'</base64>';
917 * IXR_IntrospectionServer
922 class IXR_IntrospectionServer extends IXR_Server
927 function IXR_IntrospectionServer()
929 $this->setCallbacks();
930 $this->setCapabilities();
931 $this->capabilities['introspection'] = array(
932 'specUrl' => 'http://xmlrpc.usefulinc.com/doc/reserved.html',
936 'system.methodSignature',
937 'this:methodSignature',
938 array('array', 'string'),
939 'Returns an array describing the return type and required parameters of a method'
942 'system.getCapabilities',
943 'this:getCapabilities',
945 'Returns a struct describing the XML-RPC specifications supported by this server'
948 'system.listMethods',
951 'Returns an array of available methods on this server'
956 array('string', 'string'),
957 'Returns a documentation string for the specified method'
961 function addCallback($method, $callback, $args, $help)
963 $this->callbacks[$method] = $callback;
964 $this->signatures[$method] = $args;
965 $this->help[$method] = $help;
968 function call($methodname, $args)
970 // Make sure it's in an array
971 if ($args && !is_array($args)) {
972 $args = array($args);
975 // Over-rides default call method, adds signature check
976 if (!$this->hasMethod($methodname)) {
977 return new IXR_Error(-32601, 'server error. requested method "'.$this->message->methodName.'" not specified.');
979 $method = $this->callbacks[$methodname];
980 $signature = $this->signatures[$methodname];
981 $returnType = array_shift($signature);
983 // Check the number of arguments
984 if (count($args) != count($signature)) {
985 return new IXR_Error(-32602, 'server error. wrong number of method parameters');
988 // Check the argument types
991 for ($i = 0, $j = count($args); $i < $j; $i++) {
992 $arg = array_shift($args);
993 $type = array_shift($signature);
997 if (is_array($arg) || !is_int($arg)) {
1003 if (!is_string($arg)) {
1008 if ($arg !== false && $arg !== true) {
1014 if (!is_float($arg)) {
1019 case 'dateTime.iso8601':
1020 if (!is_a($arg, 'IXR_Date')) {
1026 return new IXR_Error(-32602, 'server error. invalid method parameters');
1029 // It passed the test - run the "real" method call
1030 return parent::call($methodname, $argsbackup);
1033 function methodSignature($method)
1035 if (!$this->hasMethod($method)) {
1036 return new IXR_Error(-32601, 'server error. requested method "'.$method.'" not specified.');
1038 // We should be returning an array of types
1039 $types = $this->signatures[$method];
1041 foreach ($types as $type) {
1044 $return[] = 'string';
1053 case 'dateTime.iso8601':
1054 $return[] = new IXR_Date(time());
1060 $return[] = new IXR_Base64('base64');
1063 $return[] = array('array');
1066 $return[] = array('struct' => 'struct');
1073 function methodHelp($method)
1075 return $this->help[$method];
1080 * IXR_ClientMulticall
1085 class IXR_ClientMulticall extends IXR_Client
1087 var $calls = array();
1089 function IXR_ClientMulticall($server, $path = false, $port = 80)
1091 parent::IXR_Client($server, $path, $port);
1092 $this->useragent = 'The Incutio XML-RPC PHP Library (multicall client)';
1097 $args = func_get_args();
1098 $methodName = array_shift($args);
1100 'methodName' => $methodName,
1103 $this->calls[] = $struct;
1108 // Prepare multicall, then call the parent::query() method
1109 return parent::query('system.multicall', $this->calls);