3 * @author Gaetano Giunta
4 * @copyright (C) 2006-2021 G. Giunta
5 * @license code licensed under the BSD License: see file license.txt
10 use PhpXmlRpc\Helper\Logger;
13 * PHP-XMLRPC "wrapper" class - generate stubs to transparently access xmlrpc methods as php functions and vice-versa.
14 * Note: this class implements the PROXY pattern, but it is not named so to avoid confusion with http proxies.
16 * @todo use some better templating system for code generation?
17 * @todo implement method wrapping with preservation of php objs in calls
18 * @todo when wrapping methods without obj rebuilding, use return_type = 'phpvals' (faster)
19 * @todo add support for 'epivals' mode
20 * @todo allow setting custom namespace for generated wrapping code
24 /// used to hold a reference to object instances whose methods get wrapped by wrapPhpFunction(), in 'create source' mode
25 public static $objHolder = array();
28 * Given a string defining a php type or phpxmlrpc type (loosely defined: strings
29 * accepted come from javadoc blocks), return corresponding phpxmlrpc type.
31 * - for php 'resource' types returns empty string, since resources cannot be serialized;
32 * - for php class names returns 'struct', since php objects can be serialized as xmlrpc structs
33 * - for php arrays always return array, even though arrays sometimes serialize as structs...
34 * - for 'void' and 'null' returns 'undefined'
36 * @param string $phpType
40 * @todo support notation `something[]` as 'array'
42 public function php2XmlrpcType($phpType)
44 switch (strtolower($phpType)) {
46 return Value::$xmlrpcString;
48 case Value::$xmlrpcInt: // 'int'
49 case Value::$xmlrpcI4:
50 case Value::$xmlrpcI8:
51 return Value::$xmlrpcInt;
52 case Value::$xmlrpcDouble: // 'double'
53 return Value::$xmlrpcDouble;
55 case Value::$xmlrpcBoolean: // 'boolean'
58 return Value::$xmlrpcBoolean;
59 case Value::$xmlrpcArray: // 'array':
61 return Value::$xmlrpcArray;
63 case Value::$xmlrpcStruct: // 'struct'
64 return Value::$xmlrpcStruct;
65 case Value::$xmlrpcBase64:
66 return Value::$xmlrpcBase64;
70 if (class_exists($phpType)) {
71 if (is_a($phpType, 'DateTimeInterface')) {
72 return Value::$xmlrpcDateTime;
74 return Value::$xmlrpcStruct;
76 // unknown: might be any 'extended' xmlrpc type
77 return Value::$xmlrpcValue;
83 * Given a string defining a phpxmlrpc type return the corresponding php type.
85 * @param string $xmlrpcType
89 public function xmlrpc2PhpType($xmlrpcType)
91 switch (strtolower($xmlrpcType)) {
93 case 'datetime.iso8601':
95 return Value::$xmlrpcString;
110 // unknown: might be any xmlrpc type
111 return strtolower($xmlrpcType);
116 * Given a user-defined PHP function, create a PHP 'wrapper' function that can
117 * be exposed as xmlrpc method from an xmlrpc server object and called from remote
118 * clients (as well as its corresponding signature info).
120 * Since php is a typeless language, to infer types of input and output parameters,
121 * it relies on parsing the javadoc-style comment block associated with the given
122 * function. Usage of xmlrpc native types (such as datetime.dateTime.iso8601 and base64)
123 * in the '@param' tag is also allowed, if you need the php function to receive/send
124 * data in that particular format (note that base64 encoding/decoding is transparently
125 * carried out by the lib, while datetime vals are passed around as strings)
128 * - only works for user-defined functions, not for PHP internal functions
129 * (reflection does not support retrieving number/type of params for those)
130 * - functions returning php objects will generate special structs in xmlrpc responses:
131 * when the xmlrpc decoding of those responses is carried out by this same lib, using
132 * the appropriate param in php_xmlrpc_decode, the php objects will be rebuilt.
133 * In short: php objects can be serialized, too (except for their resource members),
134 * using this function.
135 * Other libs might choke on the very same xml that will be generated in this case
136 * (i.e. it has a nonstandard attribute on struct element tags)
138 * Note that since rel. 2.0RC3 the preferred method to have the server call 'standard'
139 * php functions (ie. functions not expecting a single Request obj as parameter)
140 * is by making use of the functions_parameters_type class member.
142 * @param callable $callable the PHP user function to be exposed as xmlrpc method/ a closure, function name, array($obj, 'methodname') or array('class', 'methodname') are ok
143 * @param string $newFuncName (optional) name for function to be created. Used only when return_source in $extraOptions is true
144 * @param array $extraOptions (optional) array of options for conversion. valid values include:
145 * - bool return_source when true, php code w. function definition will be returned, instead of a closure
146 * - bool encode_php_objs let php objects be sent to server using the 'improved' xmlrpc notation, so server can deserialize them as php objects
147 * - bool decode_php_objs --- WARNING !!! possible security hazard. only use it with trusted servers ---
148 * - bool suppress_warnings remove from produced xml any warnings generated at runtime by the php function being invoked
150 * @return array|false false on error, or an array containing the name of the new php function,
151 * its signature and docs, to be used in the server dispatch map
153 * @todo decide how to deal with params passed by ref in function definition: bomb out or allow?
154 * @todo finish using phpdoc info to build method sig if all params are named but out of order
155 * @todo add a check for params of 'resource' type
156 * @todo add some trigger_errors / error_log when returning false?
157 * @todo what to do when the PHP function returns NULL? We are currently returning an empty string value...
158 * @todo add an option to suppress php warnings in invocation of user function, similar to server debug level 3?
159 * @todo add a verbatim_object_copy parameter to allow avoiding usage the same obj instance?
160 * @todo add an option to allow generated function to skip validation of number of parameters, as that is done by the server anyway
162 public function wrapPhpFunction($callable, $newFuncName = '', $extraOptions = array())
164 $buildIt = isset($extraOptions['return_source']) ? !($extraOptions['return_source']) : true;
166 if (is_string($callable) && strpos($callable, '::') !== false) {
167 $callable = explode('::', $callable);
169 if (is_array($callable)) {
170 if (count($callable) < 2 || (!is_string($callable[0]) && !is_object($callable[0]))) {
171 Logger::instance()->errorLog('XML-RPC: ' . __METHOD__ . ': syntax for function to be wrapped is wrong');
174 if (is_string($callable[0])) {
175 $plainFuncName = implode('::', $callable);
176 } elseif (is_object($callable[0])) {
177 $plainFuncName = get_class($callable[0]) . '->' . $callable[1];
179 $exists = method_exists($callable[0], $callable[1]);
180 } else if ($callable instanceof \Closure) {
181 // we do not support creating code which wraps closures, as php does not allow to serialize them
183 Logger::instance()->errorLog('XML-RPC: ' . __METHOD__ . ': a closure can not be wrapped in generated source code');
187 $plainFuncName = 'Closure';
190 $plainFuncName = $callable;
191 $exists = function_exists($callable);
195 Logger::instance()->errorLog('XML-RPC: ' . __METHOD__ . ': function to be wrapped is not defined: ' . $plainFuncName);
199 $funcDesc = $this->introspectFunction($callable, $plainFuncName);
204 $funcSigs = $this->buildMethodSignatures($funcDesc);
207 $callable = $this->buildWrapFunctionClosure($callable, $extraOptions, $plainFuncName, $funcDesc);
209 $newFuncName = $this->newFunctionName($callable, $newFuncName, $extraOptions);
210 $code = $this->buildWrapFunctionSource($callable, $newFuncName, $extraOptions, $plainFuncName, $funcDesc);
214 'function' => $callable,
215 'signature' => $funcSigs['sigs'],
216 'docstring' => $funcDesc['desc'],
217 'signature_docs' => $funcSigs['sigsDocs'],
220 $ret['function'] = $newFuncName;
221 $ret['source'] = $code;
227 * Introspect a php callable and its phpdoc block and extract information about its signature
229 * @param callable $callable
230 * @param string $plainFuncName
231 * @return array|false
233 protected function introspectFunction($callable, $plainFuncName)
235 // start to introspect PHP code
236 if (is_array($callable)) {
237 $func = new \ReflectionMethod($callable[0], $callable[1]);
238 if ($func->isPrivate()) {
239 Logger::instance()->errorLog('XML-RPC: ' . __METHOD__ . ': method to be wrapped is private: ' . $plainFuncName);
242 if ($func->isProtected()) {
243 Logger::instance()->errorLog('XML-RPC: ' . __METHOD__ . ': method to be wrapped is protected: ' . $plainFuncName);
246 if ($func->isConstructor()) {
247 Logger::instance()->errorLog('XML-RPC: ' . __METHOD__ . ': method to be wrapped is the constructor: ' . $plainFuncName);
250 if ($func->isDestructor()) {
251 Logger::instance()->errorLog('XML-RPC: ' . __METHOD__ . ': method to be wrapped is the destructor: ' . $plainFuncName);
254 if ($func->isAbstract()) {
255 Logger::instance()->errorLog('XML-RPC: ' . __METHOD__ . ': method to be wrapped is abstract: ' . $plainFuncName);
258 /// @todo add more checks for static vs. nonstatic?
260 $func = new \ReflectionFunction($callable);
262 if ($func->isInternal()) {
263 // Note: from PHP 5.1.0 onward, we will possibly be able to use invokeargs
264 // instead of getparameters to fully reflect internal php functions ?
265 Logger::instance()->errorLog('XML-RPC: ' . __METHOD__ . ': function to be wrapped is internal: ' . $plainFuncName);
269 // retrieve parameter names, types and description from javadoc comments
271 // function description
273 // type of return val: by default 'any'
274 $returns = Value::$xmlrpcValue;
275 // desc of return val
277 // type + name of function parameters
278 $paramDocs = array();
280 $docs = $func->getDocComment();
282 $docs = explode("\n", $docs);
284 foreach ($docs as $doc) {
285 $doc = trim($doc, " \r\t/*");
286 if (strlen($doc) && strpos($doc, '@') !== 0 && !$i) {
291 } elseif (strpos($doc, '@param') === 0) {
292 // syntax: @param type $name [desc]
293 if (preg_match('/@param\s+(\S+)\s+(\$\S+)\s*(.+)?/', $doc, $matches)) {
294 $name = strtolower(trim($matches[2]));
295 //$paramDocs[$name]['name'] = trim($matches[2]);
296 $paramDocs[$name]['doc'] = isset($matches[3]) ? $matches[3] : '';
297 $paramDocs[$name]['type'] = $matches[1];
300 } elseif (strpos($doc, '@return') === 0) {
301 // syntax: @return type [desc]
302 if (preg_match('/@return\s+(\S+)(\s+.+)?/', $doc, $matches)) {
303 $returns = $matches[1];
304 if (isset($matches[2])) {
305 $returnsDocs = trim($matches[2]);
312 // execute introspection of actual function prototype
315 foreach ($func->getParameters() as $paramObj) {
316 $params[$i] = array();
317 $params[$i]['name'] = '$' . $paramObj->getName();
318 $params[$i]['isoptional'] = $paramObj->isOptional();
325 'params' => $params, // array, positionally indexed
326 'paramDocs' => $paramDocs, // array, indexed by name
327 'returns' => $returns,
328 'returnsDocs' =>$returnsDocs,
333 * Given the method description given by introspection, create method signature data
335 * @todo support better docs with multiple types separated by pipes by creating multiple signatures
336 * (this is questionable, as it might produce a big matrix of possible signatures with many such occurrences)
338 * @param array $funcDesc as generated by self::introspectFunction()
342 protected function buildMethodSignatures($funcDesc)
345 $parsVariations = array();
347 $pNum = count($funcDesc['params']);
348 foreach ($funcDesc['params'] as $param) {
349 /* // match by name real param and documented params
350 $name = strtolower($param['name']);
351 if (!isset($funcDesc['paramDocs'][$name])) {
352 $funcDesc['paramDocs'][$name] = array();
354 if (!isset($funcDesc['paramDocs'][$name]['type'])) {
355 $funcDesc['paramDocs'][$name]['type'] = 'mixed';
358 if ($param['isoptional']) {
359 // this particular parameter is optional. save as valid previous list of parameters
360 $parsVariations[] = $pars;
366 // last allowed parameters combination
367 $parsVariations[] = $pars;
371 if (count($parsVariations) == 0) {
372 // only known good synopsis = no parameters
373 $parsVariations[] = array();
378 foreach ($parsVariations as $pars) {
380 $sig = array($this->php2XmlrpcType($funcDesc['returns']));
381 $pSig = array($funcDesc['returnsDocs']);
382 for ($i = 0; $i < count($pars); $i++) {
383 $name = strtolower($funcDesc['params'][$i]['name']);
384 if (isset($funcDesc['paramDocs'][$name]['type'])) {
385 $sig[] = $this->php2XmlrpcType($funcDesc['paramDocs'][$name]['type']);
387 $sig[] = Value::$xmlrpcValue;
389 $pSig[] = isset($funcDesc['paramDocs'][$name]['doc']) ? $funcDesc['paramDocs'][$name]['doc'] : '';
397 'sigsDocs' => $sigsDocs
402 * Creates a closure that will execute $callable
403 * @todo validate params? In theory all validation is left to the dispatch map...
404 * @todo add support for $catchWarnings
407 * @param array $extraOptions
408 * @param string $plainFuncName
409 * @param array $funcDesc
412 protected function buildWrapFunctionClosure($callable, $extraOptions, $plainFuncName, $funcDesc)
415 * @param Request $req
418 $function = function($req) use($callable, $extraOptions, $funcDesc)
420 $nameSpace = '\\PhpXmlRpc\\';
421 $encoderClass = $nameSpace.'Encoder';
422 $responseClass = $nameSpace.'Response';
423 $valueClass = $nameSpace.'Value';
425 // validate number of parameters received
426 // this should be optional really, as we assume the server does the validation
427 $minPars = count($funcDesc['params']);
429 foreach ($funcDesc['params'] as $i => $param) {
430 if ($param['isoptional']) {
431 // this particular parameter is optional. We assume later ones are as well
436 $numPars = $req->getNumParams();
437 if ($numPars < $minPars || $numPars > $maxPars) {
438 return new $responseClass(0, 3, 'Incorrect parameters passed to method');
441 $encoder = new $encoderClass();
443 if (isset($extraOptions['decode_php_objs']) && $extraOptions['decode_php_objs']) {
444 $options[] = 'decode_php_objs';
446 $params = $encoder->decode($req, $options);
448 $result = call_user_func_array($callable, $params);
450 if (! is_a($result, $responseClass)) {
451 if ($funcDesc['returns'] == Value::$xmlrpcDateTime || $funcDesc['returns'] == Value::$xmlrpcBase64) {
452 $result = new $valueClass($result, $funcDesc['returns']);
455 if (isset($extraOptions['encode_php_objs']) && $extraOptions['encode_php_objs']) {
456 $options[] = 'encode_php_objs';
459 $result = $encoder->encode($result, $options);
461 $result = new $responseClass($result);
471 * Return a name for a new function, based on $callable, insuring its uniqueness
472 * @param mixed $callable a php callable, or the name of an xmlrpc method
473 * @param string $newFuncName when not empty, it is used instead of the calculated version
476 protected function newFunctionName($callable, $newFuncName, $extraOptions)
478 // determine name of new php function
480 $prefix = isset($extraOptions['prefix']) ? $extraOptions['prefix'] : 'xmlrpc';
482 if ($newFuncName == '') {
483 if (is_array($callable)) {
484 if (is_string($callable[0])) {
485 $xmlrpcFuncName = "{$prefix}_" . implode('_', $callable);
487 $xmlrpcFuncName = "{$prefix}_" . get_class($callable[0]) . '_' . $callable[1];
490 if ($callable instanceof \Closure) {
491 $xmlrpcFuncName = "{$prefix}_closure";
493 $callable = preg_replace(array('/\./', '/[^a-zA-Z0-9_\x7f-\xff]/'),
494 array('_', ''), $callable);
495 $xmlrpcFuncName = "{$prefix}_$callable";
499 $xmlrpcFuncName = $newFuncName;
502 while (function_exists($xmlrpcFuncName)) {
503 $xmlrpcFuncName .= 'x';
506 return $xmlrpcFuncName;
511 * @param string $newFuncName
512 * @param array $extraOptions
513 * @param string $plainFuncName
514 * @param array $funcDesc
517 * @todo add a nice phpdoc block in the generated source
519 protected function buildWrapFunctionSource($callable, $newFuncName, $extraOptions, $plainFuncName, $funcDesc)
521 $namespace = '\\PhpXmlRpc\\';
523 $encodePhpObjects = isset($extraOptions['encode_php_objs']) ? (bool)$extraOptions['encode_php_objs'] : false;
524 $decodePhpObjects = isset($extraOptions['decode_php_objs']) ? (bool)$extraOptions['decode_php_objs'] : false;
525 $catchWarnings = isset($extraOptions['suppress_warnings']) && $extraOptions['suppress_warnings'] ? '@' : '';
528 $parsVariations = array();
530 $pNum = count($funcDesc['params']);
531 foreach ($funcDesc['params'] as $param) {
533 if ($param['isoptional']) {
534 // this particular parameter is optional. save as valid previous list of parameters
535 $parsVariations[] = $pars;
541 // last allowed parameters combination
542 $parsVariations[] = $pars;
546 if (count($parsVariations) == 0) {
547 // only known good synopsis = no parameters
548 $parsVariations[] = array();
552 $minPars = count($parsVariations[0]);
553 $maxPars = count($parsVariations[count($parsVariations)-1]);
556 // build body of new function
558 $innerCode = "\$paramCount = \$req->getNumParams();\n";
559 $innerCode .= "if (\$paramCount < $minPars || \$paramCount > $maxPars) return new {$namespace}Response(0, " . PhpXmlRpc::$xmlrpcerr['incorrect_params'] . ", '" . PhpXmlRpc::$xmlrpcstr['incorrect_params'] . "');\n";
561 $innerCode .= "\$encoder = new {$namespace}Encoder();\n";
562 if ($decodePhpObjects) {
563 $innerCode .= "\$p = \$encoder->decode(\$req, array('decode_php_objs'));\n";
565 $innerCode .= "\$p = \$encoder->decode(\$req);\n";
568 // since we are building source code for later use, if we are given an object instance,
569 // we go out of our way and store a pointer to it in a static class var var...
570 if (is_array($callable) && is_object($callable[0])) {
571 self::$objHolder[$newFuncName] = $callable[0];
572 $innerCode .= "\$obj = PhpXmlRpc\\Wrapper::\$objHolder['$newFuncName'];\n";
573 $realFuncName = '$obj->' . $callable[1];
575 $realFuncName = $plainFuncName;
577 foreach ($parsVariations as $i => $pars) {
578 $innerCode .= "if (\$paramCount == " . count($pars) . ") \$retval = {$catchWarnings}$realFuncName(" . implode(',', $pars) . ");\n";
579 if ($i < (count($parsVariations) - 1))
580 $innerCode .= "else\n";
582 $innerCode .= "if (is_a(\$retval, '{$namespace}Response')) return \$retval; else\n";
583 if ($funcDesc['returns'] == Value::$xmlrpcDateTime || $funcDesc['returns'] == Value::$xmlrpcBase64) {
584 $innerCode .= "return new {$namespace}Response(new {$namespace}Value(\$retval, '{$funcDesc['returns']}'));";
586 if ($encodePhpObjects) {
587 $innerCode .= "return new {$namespace}Response(\$encoder->encode(\$retval, array('encode_php_objs')));\n";
589 $innerCode .= "return new {$namespace}Response(\$encoder->encode(\$retval));\n";
592 // shall we exclude functions returning by ref?
593 // if($func->returnsReference())
596 $code = "function $newFuncName(\$req) {\n" . $innerCode . "\n}";
602 * Given a user-defined PHP class or php object, map its methods onto a list of
603 * PHP 'wrapper' functions that can be exposed as xmlrpc methods from an xmlrpc server
604 * object and called from remote clients (as well as their corresponding signature info).
606 * @param string|object $className the name of the class whose methods are to be exposed as xmlrpc methods, or an object instance of that class
607 * @param array $extraOptions see the docs for wrapPhpMethod for basic options, plus
608 * - string method_type 'static', 'nonstatic', 'all' and 'auto' (default); the latter will switch between static and non-static depending on whether $className is a class name or object instance
609 * - string method_filter a regexp used to filter methods to wrap based on their names
610 * - string prefix used for the names of the xmlrpc methods created
612 * @return array|false false on failure
614 public function wrapPhpClass($className, $extraOptions = array())
616 $methodFilter = isset($extraOptions['method_filter']) ? $extraOptions['method_filter'] : '';
617 $methodType = isset($extraOptions['method_type']) ? $extraOptions['method_type'] : 'auto';
618 $prefix = isset($extraOptions['prefix']) ? $extraOptions['prefix'] : '';
621 $mList = get_class_methods($className);
622 foreach ($mList as $mName) {
623 if ($methodFilter == '' || preg_match($methodFilter, $mName)) {
624 $func = new \ReflectionMethod($className, $mName);
625 if (!$func->isPrivate() && !$func->isProtected() && !$func->isConstructor() && !$func->isDestructor() && !$func->isAbstract()) {
626 if (($func->isStatic() && ($methodType == 'all' || $methodType == 'static' || ($methodType == 'auto' && is_string($className)))) ||
627 (!$func->isStatic() && ($methodType == 'all' || $methodType == 'nonstatic' || ($methodType == 'auto' && is_object($className))))
629 $methodWrap = $this->wrapPhpFunction(array($className, $mName), '', $extraOptions);
631 if (is_object($className)) {
632 $realClassName = get_class($className);
634 $realClassName = $className;
636 $results[$prefix."$realClassName.$mName"] = $methodWrap;
647 * Given an xmlrpc client and a method name, register a php wrapper function
648 * that will call it and return results using native php types for both
649 * params and results. The generated php function will return a Response
650 * object for failed xmlrpc calls.
653 * - server must support system.methodsignature for the wanted xmlrpc method
654 * - for methods that expose many signatures, only one can be picked (we
655 * could in principle check if signatures differ only by number of params
656 * and not by type, but it would be more complication than we can spare time)
657 * - nested xmlrpc params: the caller of the generated php function has to
658 * encode on its own the params passed to the php function if these are structs
659 * or arrays whose (sub)members include values of type datetime or base64
661 * Notes: the connection properties of the given client will be copied
662 * and reused for the connection used during the call to the generated
664 * Calling the generated php function 'might' be slow: a new xmlrpc client
665 * is created on every invocation and an xmlrpc-connection opened+closed.
666 * An extra 'debug' param is appended to param list of xmlrpc method, useful
667 * for debugging purposes.
669 * @todo allow caller to give us the method signature instead of querying for it, or just say 'skip it'
670 * @todo if we can not retrieve method signature, create a php function with varargs
671 * @todo allow the created function to throw exceptions on method calls failures
672 * @todo if caller did not specify a specific sig, shall we support all of them?
673 * It might be hard (hence slow) to match based on type and number of arguments...
675 * @param Client $client an xmlrpc client set up correctly to communicate with target server
676 * @param string $methodName the xmlrpc method to be mapped to a php function
677 * @param array $extraOptions array of options that specify conversion details. Valid options include
678 * - integer signum the index of the method signature to use in mapping (if method exposes many sigs)
679 * - integer timeout timeout (in secs) to be used when executing function/calling remote method
680 * - string protocol 'http' (default), 'http11' or 'https'
681 * - string new_function_name the name of php function to create, when return_source is used. If unspecified, lib will pick an appropriate name
682 * - string return_source if true return php code w. function definition instead of function itself (closure)
683 * - bool encode_php_objs let php objects be sent to server using the 'improved' xmlrpc notation, so server can deserialize them as php objects
684 * - bool decode_php_objs --- WARNING !!! possible security hazard. only use it with trusted servers ---
685 * - mixed return_on_fault a php value to be returned when the xmlrpc call fails/returns a fault response (by default the Response object is returned in this case). If a string is used, '%faultCode%' and '%faultString%' tokens will be substituted with actual error values
686 * - bool debug set it to 1 or 2 to see debug results of querying server for method synopsis
687 * - int simple_client_copy set it to 1 to have a lightweight copy of the $client object made in the generated code (only used when return_source = true)
689 * @return \closure|string[]|false false on failure, closure by default and array for return_source = true
691 public function wrapXmlrpcMethod($client, $methodName, $extraOptions = array())
693 $newFuncName = isset($extraOptions['new_function_name']) ? $extraOptions['new_function_name'] : '';
695 $buildIt = isset($extraOptions['return_source']) ? !($extraOptions['return_source']) : true;
697 $mSig = $this->retrieveMethodSignature($client, $methodName, $extraOptions);
703 return $this->buildWrapMethodClosure($client, $methodName, $extraOptions, $mSig);
705 // if in 'offline' mode, retrieve method description too.
706 // in online mode, favour speed of operation
707 $mDesc = $this->retrieveMethodHelp($client, $methodName, $extraOptions);
709 $newFuncName = $this->newFunctionName($methodName, $newFuncName, $extraOptions);
711 $results = $this->buildWrapMethodSource($client, $methodName, $extraOptions, $newFuncName, $mSig, $mDesc);
712 /* was: $results = $this->build_remote_method_wrapper_code($client, $methodName,
713 $newFuncName, $mSig, $mDesc, $timeout, $protocol, $simpleClientCopy,
714 $prefix, $decodePhpObjects, $encodePhpObjects, $decodeFault,
715 $faultResponse, $namespace);*/
717 $results['function'] = $newFuncName;
725 * Retrieves an xmlrpc method signature from a server which supports system.methodSignature
726 * @param Client $client
727 * @param string $methodName
728 * @param array $extraOptions
729 * @return false|array
731 protected function retrieveMethodSignature($client, $methodName, array $extraOptions = array())
733 $namespace = '\\PhpXmlRpc\\';
734 $reqClass = $namespace . 'Request';
735 $valClass = $namespace . 'Value';
736 $decoderClass = $namespace . 'Encoder';
738 $debug = isset($extraOptions['debug']) ? ($extraOptions['debug']) : 0;
739 $timeout = isset($extraOptions['timeout']) ? (int)$extraOptions['timeout'] : 0;
740 $protocol = isset($extraOptions['protocol']) ? $extraOptions['protocol'] : '';
741 $sigNum = isset($extraOptions['signum']) ? (int)$extraOptions['signum'] : 0;
743 $req = new $reqClass('system.methodSignature');
744 $req->addparam(new $valClass($methodName));
745 $client->setDebug($debug);
746 $response = $client->send($req, $timeout, $protocol);
747 if ($response->faultCode()) {
748 Logger::instance()->errorLog('XML-RPC: ' . __METHOD__ . ': could not retrieve method signature from remote server for method ' . $methodName);
752 $mSig = $response->value();
753 if ($client->return_type != 'phpvals') {
754 $decoder = new $decoderClass();
755 $mSig = $decoder->decode($mSig);
758 if (!is_array($mSig) || count($mSig) <= $sigNum) {
759 Logger::instance()->errorLog('XML-RPC: ' . __METHOD__ . ': could not retrieve method signature nr.' . $sigNum . ' from remote server for method ' . $methodName);
763 return $mSig[$sigNum];
767 * @param Client $client
768 * @param string $methodName
769 * @param array $extraOptions
770 * @return string in case of any error, an empty string is returned, no warnings generated
772 protected function retrieveMethodHelp($client, $methodName, array $extraOptions = array())
774 $namespace = '\\PhpXmlRpc\\';
775 $reqClass = $namespace . 'Request';
776 $valClass = $namespace . 'Value';
778 $debug = isset($extraOptions['debug']) ? ($extraOptions['debug']) : 0;
779 $timeout = isset($extraOptions['timeout']) ? (int)$extraOptions['timeout'] : 0;
780 $protocol = isset($extraOptions['protocol']) ? $extraOptions['protocol'] : '';
784 $req = new $reqClass('system.methodHelp');
785 $req->addparam(new $valClass($methodName));
786 $client->setDebug($debug);
787 $response = $client->send($req, $timeout, $protocol);
788 if (!$response->faultCode()) {
789 $mDesc = $response->value();
790 if ($client->return_type != 'phpvals') {
791 $mDesc = $mDesc->scalarval();
799 * @param Client $client
800 * @param string $methodName
801 * @param array $extraOptions
805 * @todo should we allow usage of parameter simple_client_copy to mean 'do not clone' in this case?
807 protected function buildWrapMethodClosure($client, $methodName, array $extraOptions, $mSig)
809 // we clone the client, so that we can modify it a bit independently of the original
810 $clientClone = clone $client;
811 $function = function() use($clientClone, $methodName, $extraOptions, $mSig)
813 $timeout = isset($extraOptions['timeout']) ? (int)$extraOptions['timeout'] : 0;
814 $protocol = isset($extraOptions['protocol']) ? $extraOptions['protocol'] : '';
815 $encodePhpObjects = isset($extraOptions['encode_php_objs']) ? (bool)$extraOptions['encode_php_objs'] : false;
816 $decodePhpObjects = isset($extraOptions['decode_php_objs']) ? (bool)$extraOptions['decode_php_objs'] : false;
817 if (isset($extraOptions['return_on_fault'])) {
819 $faultResponse = $extraOptions['return_on_fault'];
821 $decodeFault = false;
824 $namespace = '\\PhpXmlRpc\\';
825 $reqClass = $namespace . 'Request';
826 $encoderClass = $namespace . 'Encoder';
827 $valueClass = $namespace . 'Value';
829 $encoder = new $encoderClass();
830 $encodeOptions = array();
831 if ($encodePhpObjects) {
832 $encodeOptions[] = 'encode_php_objs';
834 $decodeOptions = array();
835 if ($decodePhpObjects) {
836 $decodeOptions[] = 'decode_php_objs';
839 /// @todo check for insufficient nr. of args besides excess ones? note that 'source' version does not...
841 // support one extra parameter: debug
842 $maxArgs = count($mSig)-1; // 1st element is the return type
843 $currentArgs = func_get_args();
844 if (func_num_args() == ($maxArgs+1)) {
845 $debug = array_pop($currentArgs);
846 $clientClone->setDebug($debug);
849 $xmlrpcArgs = array();
850 foreach($currentArgs as $i => $arg) {
851 if ($i == $maxArgs) {
854 $pType = $mSig[$i+1];
855 if ($pType == 'i4' || $pType == 'i8' || $pType == 'int' || $pType == 'boolean' || $pType == 'double' ||
856 $pType == 'string' || $pType == 'dateTime.iso8601' || $pType == 'base64' || $pType == 'null'
858 // by building directly xmlrpc values when type is known and scalar (instead of encode() calls),
859 // we make sure to honour the xmlrpc signature
860 $xmlrpcArgs[] = new $valueClass($arg, $pType);
862 $xmlrpcArgs[] = $encoder->encode($arg, $encodeOptions);
866 $req = new $reqClass($methodName, $xmlrpcArgs);
867 // use this to get the maximum decoding flexibility
868 $clientClone->return_type = 'xmlrpcvals';
869 $resp = $clientClone->send($req, $timeout, $protocol);
870 if ($resp->faultcode()) {
872 if (is_string($faultResponse) && ((strpos($faultResponse, '%faultCode%') !== false) ||
873 (strpos($faultResponse, '%faultString%') !== false))) {
874 $faultResponse = str_replace(array('%faultCode%', '%faultString%'),
875 array($resp->faultCode(), $resp->faultString()), $faultResponse);
877 return $faultResponse;
882 return $encoder->decode($resp->value(), $decodeOptions);
890 * @param Client $client
891 * @param string $methodName
892 * @param array $extraOptions
893 * @param string $newFuncName
895 * @param string $mDesc
896 * @return string[] keys: source, docstring
898 public function buildWrapMethodSource($client, $methodName, array $extraOptions, $newFuncName, $mSig, $mDesc='')
900 $timeout = isset($extraOptions['timeout']) ? (int)$extraOptions['timeout'] : 0;
901 $protocol = isset($extraOptions['protocol']) ? $extraOptions['protocol'] : '';
902 $encodePhpObjects = isset($extraOptions['encode_php_objs']) ? (bool)$extraOptions['encode_php_objs'] : false;
903 $decodePhpObjects = isset($extraOptions['decode_php_objs']) ? (bool)$extraOptions['decode_php_objs'] : false;
904 $clientCopyMode = isset($extraOptions['simple_client_copy']) ? (int)($extraOptions['simple_client_copy']) : 0;
905 $prefix = isset($extraOptions['prefix']) ? $extraOptions['prefix'] : 'xmlrpc';
906 if (isset($extraOptions['return_on_fault'])) {
908 $faultResponse = $extraOptions['return_on_fault'];
910 $decodeFault = false;
914 $namespace = '\\PhpXmlRpc\\';
916 $code = "function $newFuncName (";
917 if ($clientCopyMode < 2) {
918 // client copy mode 0 or 1 == full / partial client copy in emitted code
919 $verbatimClientCopy = !$clientCopyMode;
920 $innerCode = $this->buildClientWrapperCode($client, $verbatimClientCopy, $prefix, $namespace);
921 $innerCode .= "\$client->setDebug(\$debug);\n";
924 // client copy mode 2 == no client copy in emitted code
928 $innerCode .= "\$req = new {$namespace}Request('$methodName');\n";
931 // take care that PHP comment is not terminated unwillingly by method description
932 $mDesc = "/**\n* " . str_replace('*/', '* /', $mDesc) . "\n";
934 $mDesc = "/**\nFunction $newFuncName\n";
938 $innerCode .= "\$encoder = new {$namespace}Encoder();\n";
940 $pCount = count($mSig);
941 for ($i = 1; $i < $pCount; $i++) {
944 if ($pType == 'i4' || $pType == 'i8' || $pType == 'int' || $pType == 'boolean' || $pType == 'double' ||
945 $pType == 'string' || $pType == 'dateTime.iso8601' || $pType == 'base64' || $pType == 'null'
947 // only build directly xmlrpc values when type is known and scalar
948 $innerCode .= "\$p$i = new {$namespace}Value(\$p$i, '$pType');\n";
950 if ($encodePhpObjects) {
951 $innerCode .= "\$p$i = \$encoder->encode(\$p$i, array('encode_php_objs'));\n";
953 $innerCode .= "\$p$i = \$encoder->encode(\$p$i);\n";
956 $innerCode .= "\$req->addparam(\$p$i);\n";
957 $mDesc .= '* @param ' . $this->xmlrpc2PhpType($pType) . " \$p$i\n";
959 if ($clientCopyMode < 2) {
960 $plist[] = '$debug=0';
961 $mDesc .= "* @param int \$debug when 1 (or 2) will enable debugging of the underlying {$prefix} call (defaults to 0)\n";
963 $plist = implode(', ', $plist);
964 $mDesc .= '* @return {$namespace}Response|' . $this->xmlrpc2PhpType($mSig[0]) . " (an {$namespace}Response obj instance if call fails)\n*/\n";
966 $innerCode .= "\$res = \${$this_}client->send(\$req, $timeout, '$protocol');\n";
968 if (is_string($faultResponse) && ((strpos($faultResponse, '%faultCode%') !== false) || (strpos($faultResponse, '%faultString%') !== false))) {
969 $respCode = "str_replace(array('%faultCode%', '%faultString%'), array(\$res->faultCode(), \$res->faultString()), '" . str_replace("'", "''", $faultResponse) . "')";
971 $respCode = var_export($faultResponse, true);
976 if ($decodePhpObjects) {
977 $innerCode .= "if (\$res->faultcode()) return $respCode; else return \$encoder->decode(\$res->value(), array('decode_php_objs'));";
979 $innerCode .= "if (\$res->faultcode()) return $respCode; else return \$encoder->decode(\$res->value());";
982 $code = $code . $plist . ") {\n" . $innerCode . "\n}\n";
984 return array('source' => $code, 'docstring' => $mDesc);
988 * Similar to wrapXmlrpcMethod, but will generate a php class that wraps
989 * all xmlrpc methods exposed by the remote server as own methods.
990 * For more details see wrapXmlrpcMethod.
992 * For a slimmer alternative, see the code in demo/client/proxy.php
994 * Note that unlike wrapXmlrpcMethod, we always have to generate php code here. It seems that php 7 will have anon classes...
996 * @param Client $client the client obj all set to query the desired server
997 * @param array $extraOptions list of options for wrapped code. See the ones from wrapXmlrpcMethod plus
998 * - string method_filter regular expression
999 * - string new_class_name
1001 * - bool simple_client_copy set it to true to avoid copying all properties of $client into the copy made in the new class
1003 * @return mixed false on error, the name of the created class if all ok or an array with code, class name and comments (if the appropriate option is set in extra_options)
1005 public function wrapXmlrpcServer($client, $extraOptions = array())
1007 $methodFilter = isset($extraOptions['method_filter']) ? $extraOptions['method_filter'] : '';
1008 $timeout = isset($extraOptions['timeout']) ? (int)$extraOptions['timeout'] : 0;
1009 $protocol = isset($extraOptions['protocol']) ? $extraOptions['protocol'] : '';
1010 $newClassName = isset($extraOptions['new_class_name']) ? $extraOptions['new_class_name'] : '';
1011 $encodePhpObjects = isset($extraOptions['encode_php_objs']) ? (bool)$extraOptions['encode_php_objs'] : false;
1012 $decodePhpObjects = isset($extraOptions['decode_php_objs']) ? (bool)$extraOptions['decode_php_objs'] : false;
1013 $verbatimClientCopy = isset($extraOptions['simple_client_copy']) ? !($extraOptions['simple_client_copy']) : true;
1014 $buildIt = isset($extraOptions['return_source']) ? !($extraOptions['return_source']) : true;
1015 $prefix = isset($extraOptions['prefix']) ? $extraOptions['prefix'] : 'xmlrpc';
1016 $namespace = '\\PhpXmlRpc\\';
1018 $reqClass = $namespace . 'Request';
1019 $decoderClass = $namespace . 'Encoder';
1021 $req = new $reqClass('system.listMethods');
1022 $response = $client->send($req, $timeout, $protocol);
1023 if ($response->faultCode()) {
1024 Logger::instance()->errorLog('XML-RPC: ' . __METHOD__ . ': could not retrieve method list from remote server');
1028 $mList = $response->value();
1029 if ($client->return_type != 'phpvals') {
1030 $decoder = new $decoderClass();
1031 $mList = $decoder->decode($mList);
1033 if (!is_array($mList) || !count($mList)) {
1034 Logger::instance()->errorLog('XML-RPC: ' . __METHOD__ . ': could not retrieve meaningful method list from remote server');
1038 // pick a suitable name for the new function, avoiding collisions
1039 if ($newClassName != '') {
1040 $xmlrpcClassName = $newClassName;
1042 $xmlrpcClassName = $prefix . '_' . preg_replace(array('/\./', '/[^a-zA-Z0-9_\x7f-\xff]/'),
1043 array('_', ''), $client->server) . '_client';
1045 while ($buildIt && class_exists($xmlrpcClassName)) {
1046 $xmlrpcClassName .= 'x';
1049 /// @todo add function setdebug() to new class, to enable/disable debugging
1050 $source = "class $xmlrpcClassName\n{\npublic \$client;\n\n";
1051 $source .= "function __construct()\n{\n";
1052 $source .= $this->buildClientWrapperCode($client, $verbatimClientCopy, $prefix, $namespace);
1053 $source .= "\$this->client = \$client;\n}\n\n";
1055 'return_source' => true,
1056 'simple_client_copy' => 2, // do not produce code to copy the client object
1057 'timeout' => $timeout,
1058 'protocol' => $protocol,
1059 'encode_php_objs' => $encodePhpObjects,
1060 'decode_php_objs' => $decodePhpObjects,
1061 'prefix' => $prefix,
1063 /// @todo build phpdoc for class definition, too
1064 foreach ($mList as $mName) {
1065 if ($methodFilter == '' || preg_match($methodFilter, $mName)) {
1066 // note: this will fail if server exposes 2 methods called f.e. do.something and do_something
1067 $opts['new_function_name'] = preg_replace(array('/\./', '/[^a-zA-Z0-9_\x7f-\xff]/'),
1068 array('_', ''), $mName);
1069 $methodWrap = $this->wrapXmlrpcMethod($client, $mName, $opts);
1072 $source .= $methodWrap['docstring'];
1074 $source .= $methodWrap['source'] . "\n";
1076 Logger::instance()->errorLog('XML-RPC: ' . __METHOD__ . ': will not create class method to wrap remote method ' . $mName);
1083 eval($source . '$allOK=1;');
1085 return $xmlrpcClassName;
1087 Logger::instance()->errorLog('XML-RPC: ' . __METHOD__ . ': could not create class ' . $xmlrpcClassName . ' to wrap remote server ' . $client->server);
1091 return array('class' => $xmlrpcClassName, 'code' => $source, 'docstring' => '');
1098 * Given necessary info, generate php code that will build a client object just like the given one.
1099 * Take care that no full checking of input parameters is done to ensure that
1100 * valid php code is emitted.
1101 * @param Client $client
1102 * @param bool $verbatimClientCopy when true, copy all of the state of the client, except for 'debug' and 'return_type'
1103 * @param string $prefix used for the return_type of the created client
1104 * @param string $namespace
1108 protected function buildClientWrapperCode($client, $verbatimClientCopy, $prefix = 'xmlrpc', $namespace = '\\PhpXmlRpc\\' )
1110 $code = "\$client = new {$namespace}Client('" . str_replace("'", "\'", $client->path) .
1111 "', '" . str_replace("'", "\'", $client->server) . "', $client->port);\n";
1113 // copy all client fields to the client that will be generated runtime
1114 // (this provides for future expansion or subclassing of client obj)
1115 if ($verbatimClientCopy) {
1116 foreach ($client as $fld => $val) {
1117 /// @todo in php 8.0, curl handles became objects, but they have no __set_state, thus var_export will
1118 /// fail for xmlrpc_curl_handle. So we disabled copying it.
1119 /// We should examine in depth if this change can have side effects - at first sight if the
1120 /// client's curl handle is not set, all curl options are (re)set on each http call, so there
1121 /// should be no loss of state...
1122 if ($fld != 'debug' && $fld != 'return_type' && $fld != 'xmlrpc_curl_handle') {
1123 $val = var_export($val, true);
1124 $code .= "\$client->$fld = $val;\n";
1128 // only make sure that client always returns the correct data type
1129 $code .= "\$client->return_type = '{$prefix}vals';\n";
1130 //$code .= "\$client->setDebug(\$debug);\n";