3 * @author Gaetano Giunta
4 * @copyright (C) 2006-2015 G. Giunta
5 * @license code licensed under the BSD License: see file license.txt
11 * PHP-XMLRPC "wrapper" class.
12 * Generate stubs to transparently access xmlrpc methods as php functions and vice-versa.
13 * Note: this class implements the PROXY pattern, but it is not named so to avoid confusion with http proxies.
15 * @todo use some better templating system for code generation?
16 * @todo implement method wrapping with preservation of php objs in calls
17 * @todo when wrapping methods without obj rebuilding, use return_type = 'phpvals' (faster)
22 * Given a string defining a php type or phpxmlrpc type (loosely defined: strings
23 * accepted come from javadoc blocks), return corresponding phpxmlrpc type.
24 * NB: for php 'resource' types returns empty string, since resources cannot be serialized;
25 * for php class names returns 'struct', since php objects can be serialized as xmlrpc structs
26 * for php arrays always return array, even though arrays sometimes serialize as json structs.
28 * @param string $phpType
32 public function php_2_xmlrpc_type($phpType)
34 switch (strtolower($phpType)) {
36 return Value::$xmlrpcString;
38 case Value::$xmlrpcInt: // 'int'
39 case Value::$xmlrpcI4:
40 return Value::$xmlrpcInt;
42 return Value::$xmlrpcDouble;
44 return Value::$xmlrpcBoolean;
46 return Value::$xmlrpcArray;
48 return Value::$xmlrpcStruct;
49 case Value::$xmlrpcBase64:
50 case Value::$xmlrpcStruct:
51 return strtolower($phpType);
55 if (class_exists($phpType)) {
56 return Value::$xmlrpcStruct;
58 // unknown: might be any 'extended' xmlrpc type
59 return Value::$xmlrpcValue;
65 * Given a string defining a phpxmlrpc type return corresponding php type.
67 * @param string $xmlrpcType
71 public function xmlrpc_2_php_type($xmlrpcType)
73 switch (strtolower($xmlrpcType)) {
75 case 'datetime.iso8601':
77 return Value::$xmlrpcString;
91 // unknown: might be any xmlrpc type
92 return strtolower($xmlrpcType);
97 * Given a user-defined PHP function, create a PHP 'wrapper' function that can
98 * be exposed as xmlrpc method from an xmlrpc server object and called from remote
99 * clients (as well as its corresponding signature info).
101 * Since php is a typeless language, to infer types of input and output parameters,
102 * it relies on parsing the javadoc-style comment block associated with the given
103 * function. Usage of xmlrpc native types (such as datetime.dateTime.iso8601 and base64)
104 * in the @param tag is also allowed, if you need the php function to receive/send
105 * data in that particular format (note that base64 encoding/decoding is transparently
106 * carried out by the lib, while datetime vals are passed around as strings)
109 * - only works for user-defined functions, not for PHP internal functions
110 * (reflection does not support retrieving number/type of params for those)
111 * - functions returning php objects will generate special xmlrpc responses:
112 * when the xmlrpc decoding of those responses is carried out by this same lib, using
113 * the appropriate param in php_xmlrpc_decode, the php objects will be rebuilt.
114 * In short: php objects can be serialized, too (except for their resource members),
115 * using this function.
116 * Other libs might choke on the very same xml that will be generated in this case
117 * (i.e. it has a nonstandard attribute on struct element tags)
118 * - usage of javadoc @param tags using param names in a different order from the
119 * function prototype is not considered valid (to be fixed?)
121 * Note that since rel. 2.0RC3 the preferred method to have the server call 'standard'
122 * php functions (ie. functions not expecting a single Request obj as parameter)
123 * is by making use of the functions_parameters_type class member.
125 * @param string|array $callable the name of the PHP user function to be exposed as xmlrpc method; array($obj, 'methodname') and array('class', 'methodname') are ok too
126 * @param string $newFuncName (optional) name for function to be created. Used only when return_source in $extraOptions is true
127 * @param array $extraOptions (optional) array of options for conversion. valid values include:
128 * bool return_source when true, php code w. function definition will be returned, not evaluated
129 * bool encode_php_objs let php objects be sent to server using the 'improved' xmlrpc notation, so server can deserialize them as php objects
130 * bool decode_php_objs --- WARNING !!! possible security hazard. only use it with trusted servers ---
131 * bool suppress_warnings remove from produced xml any runtime warnings due to the php function being invoked
133 * @return array|false false on error, or an array containing the name of the new php function,
134 * its signature and docs, to be used in the server dispatch map
136 * @todo decide how to deal with params passed by ref: bomb out or allow?
137 * @todo finish using phpdoc info to build method sig if all params are named but out of order
138 * @todo add a check for params of 'resource' type
139 * @todo add some trigger_errors / error_log when returning false?
140 * @todo what to do when the PHP function returns NULL? We are currently returning an empty string value...
141 * @todo add an option to suppress php warnings in invocation of user function, similar to server debug level 3?
142 * @todo if $newFuncName is empty, we could use create_user_func instead of eval, as it is possibly faster
143 * @todo add a verbatim_object_copy parameter to allow avoiding the same obj instance?
145 public function wrap_php_function($callable, $newFuncName = '', $extraOptions = array())
147 $buildIt = isset($extraOptions['return_source']) ? !($extraOptions['return_source']) : true;
149 if (is_string($callable) && strpos($callable, '::') !== false) {
150 $callable = explode('::', $callable);
152 if (is_array($callable)) {
153 if (count($callable) < 2 || (!is_string($callable[0]) && !is_object($callable[0]))) {
154 error_log('XML-RPC: syntax for function to be wrapped is wrong');
157 if (is_string($callable[0])) {
158 $plainFuncName = implode('::', $callable);
159 } elseif (is_object($callable[0])) {
160 $plainFuncName = get_class($callable[0]) . '->' . $callable[1];
162 $exists = method_exists($callable[0], $callable[1]);
163 } else if ($callable instanceof \Closure) {
164 $plainFuncName = 'Closure';
168 $plainFuncName = $callable;
169 $exists = function_exists($callable);
173 error_log('XML-RPC: function to be wrapped is not defined: ' . $plainFuncName);
177 $funcDesc = $this->introspectFunction($callable, $plainFuncName);
182 $funcSigs = $this->buildMethodSignatures($funcDesc);
186 eval($code . '$allOK=1;');
188 //$xmlrpcFuncName = create_function('$m', $innerCode);
191 error_log('XML-RPC: could not create function ' . $xmlrpcFuncName . ' to wrap php function ' . $plainFuncName);
195 $callable = $this->buildWrapFunctionClosure($callable, $extraOptions, null, null);
198 $newFuncName = $this->newFunctionName($callable, $newFuncName, $extraOptions);
199 $code = $this->buildWrapFunctionSource($callable, $newFuncName, $extraOptions, $plainFuncName, $funcDesc);
200 // replace the original callable to be set in the results
201 $callable = $newFuncName;
204 /// @todo examine if $paramDocs matches $parsVariations and build array for
205 /// usage as method signature, plus put together a nice string for docs
208 'function' => $callable,
209 'signature' => $funcSigs['sigs'],
210 'docstring' => $funcDesc['desc'],
211 'signature_docs' => $funcSigs['pSigs'],
219 * Introspect a php callable and its phpdoc block and extract information about its signature
221 * @param callable $callable
222 * @param string $plainFuncName
223 * @return array|false
225 protected function introspectFunction($callable, $plainFuncName)
227 // start to introspect PHP code
228 if (is_array($callable)) {
229 $func = new \ReflectionMethod($callable[0], $callable[1]);
230 if ($func->isPrivate()) {
231 error_log('XML-RPC: method to be wrapped is private: ' . $plainFuncName);
235 if ($func->isProtected()) {
236 error_log('XML-RPC: method to be wrapped is protected: ' . $plainFuncName);
240 if ($func->isConstructor()) {
241 error_log('XML-RPC: method to be wrapped is the constructor: ' . $plainFuncName);
245 if ($func->isDestructor()) {
246 error_log('XML-RPC: method to be wrapped is the destructor: ' . $plainFuncName);
250 if ($func->isAbstract()) {
251 error_log('XML-RPC: method to be wrapped is abstract: ' . $plainFuncName);
255 /// @todo add more checks for static vs. nonstatic?
257 $func = new \ReflectionFunction($callable);
259 if ($func->isInternal()) {
260 // Note: from PHP 5.1.0 onward, we will possibly be able to use invokeargs
261 // instead of getparameters to fully reflect internal php functions ?
262 error_log('XML-RPC: function to be wrapped is internal: ' . $plainFuncName);
267 // retrieve parameter names, types and description from javadoc comments
269 // function description
271 // type of return val: by default 'any'
272 $returns = Value::$xmlrpcValue;
273 // desc of return val
275 // type + name of function parameters
276 $paramDocs = array();
278 $docs = $func->getDocComment();
280 $docs = explode("\n", $docs);
282 foreach ($docs as $doc) {
283 $doc = trim($doc, " \r\t/*");
284 if (strlen($doc) && strpos($doc, '@') !== 0 && !$i) {
289 } elseif (strpos($doc, '@param') === 0) {
290 // syntax: @param type [$name] desc
291 if (preg_match('/@param\s+(\S+)(\s+\$\S+)?\s+(.+)/', $doc, $matches)) {
292 if (strpos($matches[1], '|')) {
293 //$paramDocs[$i]['type'] = explode('|', $matches[1]);
294 $paramDocs[$i]['type'] = 'mixed';
296 $paramDocs[$i]['type'] = $matches[1];
298 $paramDocs[$i]['name'] = trim($matches[2]);
299 $paramDocs[$i]['doc'] = $matches[3];
302 } elseif (strpos($doc, '@return') === 0) {
303 // syntax: @return type desc
304 //$returns = preg_split('/\s+/', $doc);
305 if (preg_match('/@return\s+(\S+)\s+(.+)/', $doc, $matches)) {
306 $returns = $this->php_2_xmlrpc_type($matches[1]);
307 if (isset($matches[2])) {
308 $returnsDocs = $matches[2];
315 // execute introspection of actual function prototype
318 foreach ($func->getParameters() as $paramObj) {
319 $params[$i] = array();
320 $params[$i]['name'] = '$' . $paramObj->getName();
321 $params[$i]['isoptional'] = $paramObj->isOptional();
329 'paramsDocs' => $paramDocs,
330 'returns' => $returns,
331 'returnsDocs' =>$returnsDocs,
336 * Given the method description given by introspection, create method signature data
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 $param) {
349 if (isset($funcDesc['paramDocs'][$i]['name']) && $funcDesc['paramDocs'][$i]['name'] &&
350 strtolower($funcDesc['paramDocs'][$i]['name']) != strtolower($param['name'])) {
351 // param name from phpdoc info does not match param definition!
352 $funcDesc['paramDocs'][$i]['type'] = 'mixed';
355 if ($param['isoptional']) {
356 // this particular parameter is optional. save as valid previous list of parameters
357 $parsVariations[] = $pars;
363 // last allowed parameters combination
364 $parsVariations[] = $pars;
368 if (count($parsVariations) == 0) {
369 // only known good synopsis = no parameters
370 $parsVariations[] = array();
375 foreach ($parsVariations as $pars) {
376 // build a 'generic' signature (only use an appropriate return type)
377 $sig = array($funcDesc['returns']);
378 $pSig = array($funcDesc['returnsDocs']);
379 for ($i = 0; $i < count($pars); $i++) {
380 if (isset($funcDesc['paramDocs'][$i]['type'])) {
381 $sig[] = $this->php_2_xmlrpc_type($funcDesc['paramDocs'][$i]['type']);
383 $sig[] = Value::$xmlrpcValue;
385 $pSig[] = isset($funcDesc['paramDocs'][$i]['doc']) ? $funcDesc['paramDocs'][$i]['doc'] : '';
398 * Creates a closure that will execute $callable
399 * @todo validate params
402 * @param array $extraOptions
403 * @param string $plainFuncName
404 * @param string $funcDesc
407 protected function buildWrapFunctionClosure($callable, $extraOptions, $plainFuncName, $funcDesc)
409 $function = function($req) use($callable, $extraOptions)
411 $nameSpace = '\\PhpXmlRpc\\';
412 $encoderClass = $nameSpace.'Encoder';
413 $responseClass = $nameSpace.'Response';
415 $encoder = new $encoderClass();
417 if (isset($extraOptions['decode_php_objs']) && $extraOptions['decode_php_objs']) {
418 $options[] = 'decode_php_objs';
420 $params = $encoder->decode($req, $options);
422 $result = call_user_func_array($callable, $params);
424 if (! is_a($result, $responseClass)) {
426 if (isset($extraOptions['encode_php_objs']) && $extraOptions['encode_php_objs']) {
427 $options[] = 'encode_php_objs';
429 $result = new $responseClass($encoder->encode($result, $options));
439 * Return a name for the new function
441 * @param string $newFuncName
444 protected function newFunctionName($callable, $newFuncName, $extraOptions)
446 // determine name of new php function
448 $prefix = isset($extraOptions['prefix']) ? $extraOptions['prefix'] : 'xmlrpc';
450 if ($newFuncName == '') {
451 if (is_array($callable)) {
452 if (is_string($callable[0])) {
453 $xmlrpcFuncName = "{$prefix}_" . implode('_', $callable);
455 $xmlrpcFuncName = "{$prefix}_" . get_class($callable[0]) . '_' . $callable[1];
458 if ($callable instanceof \Closure) {
459 $xmlrpcFuncName = "{$prefix}_closure";
461 $xmlrpcFuncName = "{$prefix}_$callable";
465 $xmlrpcFuncName = $newFuncName;
468 while (function_exists($xmlrpcFuncName)) {
469 $xmlrpcFuncName .= 'x';
472 return $xmlrpcFuncName;
477 * @param string $newFuncName
478 * @param array $extraOptions
479 * @param string $plainFuncName
480 * @param array $funcDesc
483 protected function buildWrapFunctionSource($callable, $newFuncName, $extraOptions, $plainFuncName, $funcDesc)
485 $namespace = '\\PhpXmlRpc\\';
486 $prefix = isset($extraOptions['prefix']) ? $extraOptions['prefix'] : 'xmlrpc';
487 $encodePhpObjects = isset($extraOptions['encode_php_objs']) ? (bool)$extraOptions['encode_php_objs'] : false;
488 $decodePhpObjects = isset($extraOptions['decode_php_objs']) ? (bool)$extraOptions['decode_php_objs'] : false;
489 $catchWarnings = isset($extraOptions['suppress_warnings']) && $extraOptions['suppress_warnings'] ? '@' : '';
491 // build body of new function
493 $innerCode = "\$encoder = new {$namespace}Encoder();\n";
495 $parsVariations = array();
497 $pNum = count($funcDesc['params']);
498 foreach ($funcDesc['params'] as $param) {
499 if (isset($funcDesc['paramDocs'][$i]['name']) && $funcDesc['paramDocs'][$i]['name'] &&
500 strtolower($funcDesc['paramDocs'][$i]['name']) != strtolower($param['name'])) {
501 // param name from phpdoc info does not match param definition!
502 $funcDesc['paramDocs'][$i]['type'] = 'mixed';
505 if ($param['isoptional']) {
506 // this particular parameter is optional. save as valid previous list of parameters
507 $innerCode .= "if (\$paramcount > $i) {\n";
508 $parsVariations[] = $pars;
510 $innerCode .= "\$p$i = \$req->getParam($i);\n";
511 if ($decodePhpObjects) {
512 $innerCode .= "if (\$p{$i}->kindOf() == 'scalar') \$p$i = \$p{$i}->scalarval(); else \$p$i = \$encoder->decode(\$p$i, array('decode_php_objs'));\n";
514 $innerCode .= "if (\$p{$i}->kindOf() == 'scalar') \$p$i = \$p{$i}->scalarval(); else \$p$i = \$encoder->decode(\$p$i);\n";
519 if ($param['isoptional']) {
523 // last allowed parameters combination
524 $parsVariations[] = $pars;
528 if (count($parsVariations) == 0) {
529 // only known good synopsis = no parameters
530 $parsVariations[] = array();
533 $minPars = count($parsVariations[0]);
537 // add to code the check for min params number
538 // NB: this check needs to be done BEFORE decoding param values
539 $innerCode = "\$paramcount = \$req->getNumParams();\n" .
540 "if (\$paramcount < $minPars) return new {$namespace}Response(0, " . PhpXmlRpc::$xmlrpcerr['incorrect_params'] . ", '" . PhpXmlRpc::$xmlrpcstr['incorrect_params'] . "');\n" . $innerCode;
542 $innerCode = "\$paramcount = \$req->getNumParams();\n" . $innerCode;
545 $innerCode .= "\$np = false;\n";
546 // since there are no closures in php, if we are given an object instance,
547 // we store a pointer to it in a global var...
548 if (is_array($callable) && is_object($callable[0])) {
549 $GLOBALS['xmlrpcWPFObjHolder'][$newFuncName] = &$callable[0];
550 $innerCode .= "\$obj =& \$GLOBALS['xmlrpcWPFObjHolder']['$newFuncName'];\n";
551 $realFuncName = '$obj->' . $callable[1];
553 $realFuncName = $plainFuncName;
555 foreach ($parsVariations as $pars) {
556 $innerCode .= "if (\$paramcount == " . count($pars) . ") \$retval = {$catchWarnings}$realFuncName(" . implode(',', $pars) . "); else\n";
558 $innerCode .= "\$np = true;\n";
559 $innerCode .= "if (\$np) return new {$namespace}Response(0, " . PhpXmlRpc::$xmlrpcerr['incorrect_params'] . ", '" . PhpXmlRpc::$xmlrpcstr['incorrect_params'] . "'); else {\n";
560 //$innerCode .= "if (\$_xmlrpcs_error_occurred) return new Response(0, $GLOBALS['xmlrpcerr']user, \$_xmlrpcs_error_occurred); else\n";
561 $innerCode .= "if (is_a(\$retval, '{$namespace}Response')) return \$retval; else\n";
562 if ($funcDesc['returns'] == Value::$xmlrpcDateTime || $funcDesc['returns'] == Value::$xmlrpcBase64) {
563 $innerCode .= "return new {$namespace}Response(new {$namespace}Value(\$retval, '{$funcDesc['returns']}'));";
565 if ($encodePhpObjects) {
566 $innerCode .= "return new {$namespace}Response(\$encoder->encode(\$retval, array('encode_php_objs')));\n";
568 $innerCode .= "return new {$namespace}Response(\$encoder->encode(\$retval));\n";
571 // shall we exclude functions returning by ref?
572 // if($func->returnsReference())
575 $code = "function $newFuncName(\$req) {\n" . $innerCode . "}\n}";
581 * Given a user-defined PHP class or php object, map its methods onto a list of
582 * PHP 'wrapper' functions that can be exposed as xmlrpc methods from an xmlrpc server
583 * object and called from remote clients (as well as their corresponding signature info).
585 * @param mixed $className the name of the class whose methods are to be exposed as xmlrpc methods, or an object instance of that class
586 * @param array $extraOptions see the docs for wrap_php_method for basic options, plus
587 * - 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
588 * - string method_filter: a regexp used to filter methods to wrap based on their names
589 * - string $prefix/ used for the names of the xmlrpc methods created
591 * @return array or false on failure
593 * @todo get_class_methods will return both static and non-static methods.
594 * we have to differentiate the action, depending on whether we received a class name or object
596 public function wrap_php_class($className, $extraOptions = array())
598 $methodFilter = isset($extraOptions['method_filter']) ? $extraOptions['method_filter'] : '';
599 $methodType = isset($extraOptions['method_type']) ? $extraOptions['method_type'] : 'auto';
600 $prefix = isset($extraOptions['prefix']) ? $extraOptions['prefix'] : '';
603 $mList = get_class_methods($className);
604 foreach ($mList as $mName) {
605 if ($methodFilter == '' || preg_match($methodFilter, $mName)) {
606 $func = new \ReflectionMethod($className, $mName);
607 if (!$func->isPrivate() && !$func->isProtected() && !$func->isConstructor() && !$func->isDestructor() && !$func->isAbstract()) {
608 if (($func->isStatic() && ($methodType == 'all' || $methodType == 'static' || ($methodType == 'auto' && is_string($className)))) ||
609 (!$func->isStatic() && ($methodType == 'all' || $methodType == 'nonstatic' || ($methodType == 'auto' && is_object($className))))
611 $methodWrap = $this->wrap_php_function(array($className, $mName), '', $extraOptions);
613 if (is_object($className)) {
614 $realClassName = get_class($className);
616 $realClassName = $className;
618 $results[$prefix."$realClassName.$mName"] = $methodWrap;
629 * Given an xmlrpc client and a method name, register a php wrapper function
630 * that will call it and return results using native php types for both
631 * params and results. The generated php function will return a Response
632 * object for failed xmlrpc calls.
635 * - server must support system.methodsignature for the wanted xmlrpc method
636 * - for methods that expose many signatures, only one can be picked (we
637 * could in principle check if signatures differ only by number of params
638 * and not by type, but it would be more complication than we can spare time)
639 * - nested xmlrpc params: the caller of the generated php function has to
640 * encode on its own the params passed to the php function if these are structs
641 * or arrays whose (sub)members include values of type datetime or base64
643 * Notes: the connection properties of the given client will be copied
644 * and reused for the connection used during the call to the generated
646 * Calling the generated php function 'might' be slow: a new xmlrpc client
647 * is created on every invocation and an xmlrpc-connection opened+closed.
648 * An extra 'debug' param is appended to param list of xmlrpc method, useful
649 * for debugging purposes.
651 * @todo in case user wants back a function, return a closure instead of using eval
653 * @param Client $client an xmlrpc client set up correctly to communicate with target server
654 * @param string $methodName the xmlrpc method to be mapped to a php function
655 * @param array $extraOptions array of options that specify conversion details. valid options include
656 * integer signum the index of the method signature to use in mapping (if method exposes many sigs)
657 * integer timeout timeout (in secs) to be used when executing function/calling remote method
658 * string protocol 'http' (default), 'http11' or 'https'
659 * string new_function_name the name of php function to create. If unspecified, lib will pick an appropriate name
660 * string return_source if true return php code w. function definition instead fo function name
661 * bool encode_php_objs let php objects be sent to server using the 'improved' xmlrpc notation, so server can deserialize them as php objects
662 * bool decode_php_objs --- WARNING !!! possible security hazard. only use it with trusted servers ---
663 * mixed return_on_fault a php value to be returned when the xmlrpc call fails/returns a fault response (by default the Response object is returned in this case). If a string is used, '%faultCode%' and '%faultString%' tokens will be substituted with actual error values
664 * bool debug set it to 1 or 2 to see debug results of querying server for method synopsis
666 * @return string the name of the generated php function (or false) - OR AN ARRAY...
668 public function wrap_xmlrpc_method($client, $methodName, $extraOptions = 0, $timeout = 0, $protocol = '', $newFuncName = '')
670 // mind numbing: let caller use sane calling convention (as per javadoc, 3 params),
671 // OR the 2.0 calling convention (no options) - we really love backward compat, don't we?
672 if (!is_array($extraOptions)) {
673 $sigNum = $extraOptions;
674 $extraOptions = array();
676 $sigNum = isset($extraOptions['signum']) ? (int)$extraOptions['signum'] : 0;
677 $timeout = isset($extraOptions['timeout']) ? (int)$extraOptions['timeout'] : 0;
678 $protocol = isset($extraOptions['protocol']) ? $extraOptions['protocol'] : '';
679 $newFuncName = isset($extraOptions['new_function_name']) ? $extraOptions['new_function_name'] : '';
681 //$encodePhpObjects = in_array('encode_php_objects', $extraOptions);
682 //$verbatimClientCopy = in_array('simple_client_copy', $extraOptions) ? 1 :
683 // in_array('build_class_code', $extraOptions) ? 2 : 0;
685 $encodePhpObjects = isset($extraOptions['encode_php_objs']) ? (bool)$extraOptions['encode_php_objs'] : false;
686 $decodePhpObjects = isset($extraOptions['decode_php_objs']) ? (bool)$extraOptions['decode_php_objs'] : false;
687 // it seems like the meaning of 'simple_client_copy' here is swapped wrt client_copy_mode later on...
688 $simpleClientCopy = isset($extraOptions['simple_client_copy']) ? (int)($extraOptions['simple_client_copy']) : 0;
689 $buildIt = isset($extraOptions['return_source']) ? !($extraOptions['return_source']) : true;
690 $prefix = isset($extraOptions['prefix']) ? $extraOptions['prefix'] : 'xmlrpc';
691 $namespace = '\\PhpXmlRpc\\';
692 if (isset($extraOptions['return_on_fault'])) {
694 $faultResponse = $extraOptions['return_on_fault'];
696 $decodeFault = false;
699 $debug = isset($extraOptions['debug']) ? ($extraOptions['debug']) : 0;
701 $msgClass = $namespace . 'Request';
702 $valClass = $namespace . 'Value';
703 $decoderClass = $namespace . 'Encoder';
705 $msg = new $msgClass('system.methodSignature');
706 $msg->addparam(new $valClass($methodName));
707 $client->setDebug($debug);
708 $response = $client->send($msg, $timeout, $protocol);
709 if ($response->faultCode()) {
710 error_log('XML-RPC: could not retrieve method signature from remote server for method ' . $methodName);
714 $mSig = $response->value();
715 if ($client->return_type != 'phpvals') {
716 $decoder = new $decoderClass();
717 $mSig = $decoder->decode($mSig);
719 if (!is_array($mSig) || count($mSig) <= $sigNum) {
720 error_log('XML-RPC: could not retrieve method signature nr.' . $sigNum . ' from remote server for method ' . $methodName);
724 // pick a suitable name for the new function, avoiding collisions
725 if ($newFuncName != '') {
726 $xmlrpcFuncName = $newFuncName;
728 // take care to insure that methodname is translated to valid
730 $xmlrpcFuncName = $prefix . '_' . preg_replace(array('/\./', '/[^a-zA-Z0-9_\x7f-\xff]/'),
731 array('_', ''), $methodName);
733 while ($buildIt && function_exists($xmlrpcFuncName)) {
734 $xmlrpcFuncName .= 'x';
737 $mSig = $mSig[$sigNum];
739 // if in 'offline' mode, get method description too.
740 // in online mode, favour speed of operation
742 $msg = new $msgClass('system.methodHelp');
743 $msg->addparam(new $valClass($methodName));
744 $response = $client->send($msg, $timeout, $protocol);
745 if (!$response->faultCode()) {
746 $mDesc = $response->value();
747 if ($client->return_type != 'phpvals') {
748 $mDesc = $mDesc->scalarval();
753 $results = $this->build_remote_method_wrapper_code($client, $methodName,
754 $xmlrpcFuncName, $mSig, $mDesc, $timeout, $protocol, $simpleClientCopy,
755 $prefix, $decodePhpObjects, $encodePhpObjects, $decodeFault,
756 $faultResponse, $namespace);
760 eval($results['source'] . '$allOK=1;');
762 //$xmlrpcFuncName = create_function('$m', $innerCode);
764 return $xmlrpcFuncName;
766 error_log('XML-RPC: could not create function ' . $xmlrpcFuncName . ' to wrap remote method ' . $methodName);
771 $results['function'] = $xmlrpcFuncName;
780 * Similar to wrap_xmlrpc_method, but will generate a php class that wraps
781 * all xmlrpc methods exposed by the remote server as own methods.
782 * For more details see wrap_xmlrpc_method.
784 * NB: for a slimmer alternative, see the code in demo/client/proxy.php
786 * @param Client $client the client obj all set to query the desired server
787 * @param array $extraOptions list of options for wrapped code
794 * - simple_client_copy
798 * @return mixed false on error, the name of the created class if all ok or an array with code, class name and comments (if the appropriatevoption is set in extra_options)
800 public function wrap_xmlrpc_server($client, $extraOptions = array())
802 $methodFilter = isset($extraOptions['method_filter']) ? $extraOptions['method_filter'] : '';
803 //$sigNum = isset($extraOptions['signum']) ? (int)$extraOptions['signum'] : 0;
804 $timeout = isset($extraOptions['timeout']) ? (int)$extraOptions['timeout'] : 0;
805 $protocol = isset($extraOptions['protocol']) ? $extraOptions['protocol'] : '';
806 $newClassName = isset($extraOptions['new_class_name']) ? $extraOptions['new_class_name'] : '';
807 $encodePhpObjects = isset($extraOptions['encode_php_objs']) ? (bool)$extraOptions['encode_php_objs'] : false;
808 $decodePhpObjects = isset($extraOptions['decode_php_objs']) ? (bool)$extraOptions['decode_php_objs'] : false;
809 $verbatimClientCopy = isset($extraOptions['simple_client_copy']) ? !($extraOptions['simple_client_copy']) : true;
810 $buildIt = isset($extraOptions['return_source']) ? !($extraOptions['return_source']) : true;
811 $prefix = isset($extraOptions['prefix']) ? $extraOptions['prefix'] : 'xmlrpc';
812 $namespace = '\\PhpXmlRpc\\';
814 $msgClass = $namespace . 'Request';
815 //$valClass = $prefix.'val';
816 $decoderClass = $namespace . 'Encoder';
818 $msg = new $msgClass('system.listMethods');
819 $response = $client->send($msg, $timeout, $protocol);
820 if ($response->faultCode()) {
821 error_log('XML-RPC: could not retrieve method list from remote server');
825 $mList = $response->value();
826 if ($client->return_type != 'phpvals') {
827 $decoder = new $decoderClass();
828 $mList = $decoder->decode($mList);
830 if (!is_array($mList) || !count($mList)) {
831 error_log('XML-RPC: could not retrieve meaningful method list from remote server');
835 // pick a suitable name for the new function, avoiding collisions
836 if ($newClassName != '') {
837 $xmlrpcClassName = $newClassName;
839 $xmlrpcClassName = $prefix . '_' . preg_replace(array('/\./', '/[^a-zA-Z0-9_\x7f-\xff]/'),
840 array('_', ''), $client->server) . '_client';
842 while ($buildIt && class_exists($xmlrpcClassName)) {
843 $xmlrpcClassName .= 'x';
846 /// @todo add function setdebug() to new class, to enable/disable debugging
847 $source = "class $xmlrpcClassName\n{\nvar \$client;\n\n";
848 $source .= "function __construct()\n{\n";
849 $source .= $this->build_client_wrapper_code($client, $verbatimClientCopy, $prefix, $namespace);
850 $source .= "\$this->client = \$client;\n}\n\n";
851 $opts = array('simple_client_copy' => 2, 'return_source' => true,
852 'timeout' => $timeout, 'protocol' => $protocol,
853 'encode_php_objs' => $encodePhpObjects, 'prefix' => $prefix,
854 'decode_php_objs' => $decodePhpObjects,
856 /// @todo build phpdoc for class definition, too
857 foreach ($mList as $mName) {
858 if ($methodFilter == '' || preg_match($methodFilter, $mName)) {
859 // note: this will fail if server exposes 2 methods called f.e. do.something and do_something
860 $opts['new_function_name'] = preg_replace(array('/\./', '/[^a-zA-Z0-9_\x7f-\xff]/'),
861 array('_', ''), $mName);
862 $methodWrap = $this->wrap_xmlrpc_method($client, $mName, $opts);
865 $source .= $methodWrap['docstring'];
867 $source .= $methodWrap['source'] . "\n";
869 error_log('XML-RPC: will not create class method to wrap remote method ' . $mName);
876 eval($source . '$allOK=1;');
878 //$xmlrpcFuncName = create_function('$m', $innerCode);
880 return $xmlrpcClassName;
882 error_log('XML-RPC: could not create class ' . $xmlrpcClassName . ' to wrap remote server ' . $client->server);
887 return array('class' => $xmlrpcClassName, 'code' => $source, 'docstring' => '');
894 * Given the necessary info, build php code that creates a new function to
895 * invoke a remote xmlrpc method.
896 * Take care that no full checking of input parameters is done to ensure that
897 * valid php code is emitted.
898 * Note: real spaghetti code follows...
900 public function build_remote_method_wrapper_code($client, $methodName, $xmlrpcFuncName,
901 $mSig, $mDesc = '', $timeout = 0, $protocol = '', $clientCopyMode = 0, $prefix = 'xmlrpc',
902 $decodePhpObjects = false, $encodePhpObjects = false, $decodeFault = false,
903 $faultResponse = '', $namespace = '\\PhpXmlRpc\\')
905 $code = "function $xmlrpcFuncName (";
906 if ($clientCopyMode < 2) {
907 // client copy mode 0 or 1 == partial / full client copy in emitted code
908 $innerCode = $this->build_client_wrapper_code($client, $clientCopyMode, $prefix, $namespace);
909 $innerCode .= "\$client->setDebug(\$debug);\n";
912 // client copy mode 2 == no client copy in emitted code
916 $innerCode .= "\$req = new {$namespace}Request('$methodName');\n";
919 // take care that PHP comment is not terminated unwillingly by method description
920 $mDesc = "/**\n* " . str_replace('*/', '* /', $mDesc) . "\n";
922 $mDesc = "/**\nFunction $xmlrpcFuncName\n";
926 $innerCode .= "\$encoder = new {$namespace}Encoder();\n";
928 $pcount = count($mSig);
929 for ($i = 1; $i < $pcount; $i++) {
932 if ($ptype == 'i4' || $ptype == 'int' || $ptype == 'boolean' || $ptype == 'double' ||
933 $ptype == 'string' || $ptype == 'dateTime.iso8601' || $ptype == 'base64' || $ptype == 'null'
935 // only build directly xmlrpc values when type is known and scalar
936 $innerCode .= "\$p$i = new {$namespace}Value(\$p$i, '$ptype');\n";
938 if ($encodePhpObjects) {
939 $innerCode .= "\$p$i = \$encoder->encode(\$p$i, array('encode_php_objs'));\n";
941 $innerCode .= "\$p$i = \$encoder->encode(\$p$i);\n";
944 $innerCode .= "\$req->addparam(\$p$i);\n";
945 $mDesc .= '* @param ' . $this->xmlrpc_2_php_type($ptype) . " \$p$i\n";
947 if ($clientCopyMode < 2) {
948 $plist[] = '$debug=0';
949 $mDesc .= "* @param int \$debug when 1 (or 2) will enable debugging of the underlying {$prefix} call (defaults to 0)\n";
951 $plist = implode(', ', $plist);
952 $mDesc .= '* @return ' . $this->xmlrpc_2_php_type($mSig[0]) . " (or an {$namespace}Response obj instance if call fails)\n*/\n";
954 $innerCode .= "\$res = \${$this_}client->send(\$req, $timeout, '$protocol');\n";
956 if (is_string($faultResponse) && ((strpos($faultResponse, '%faultCode%') !== false) || (strpos($faultResponse, '%faultString%') !== false))) {
957 $respCode = "str_replace(array('%faultCode%', '%faultString%'), array(\$res->faultCode(), \$res->faultString()), '" . str_replace("'", "''", $faultResponse) . "')";
959 $respCode = var_export($faultResponse, true);
964 if ($decodePhpObjects) {
965 $innerCode .= "if (\$res->faultcode()) return $respCode; else return \$encoder->decode(\$res->value(), array('decode_php_objs'));";
967 $innerCode .= "if (\$res->faultcode()) return $respCode; else return \$encoder->decode(\$res->value());";
970 $code = $code . $plist . ") {\n" . $innerCode . "\n}\n";
972 return array('source' => $code, 'docstring' => $mDesc);
976 * Given necessary info, generate php code that will rebuild a client object
977 * Take care that no full checking of input parameters is done to ensure that
978 * valid php code is emitted.
979 * @param Client $client
980 * @param bool $verbatimClientCopy
981 * @param string $prefix
982 * @param string $namespace
986 protected function build_client_wrapper_code($client, $verbatimClientCopy, $prefix = 'xmlrpc', $namespace = '\\PhpXmlRpc\\' )
988 $code = "\$client = new {$namespace}Client('" . str_replace("'", "\'", $client->path) .
989 "', '" . str_replace("'", "\'", $client->server) . "', $client->port);\n";
991 // copy all client fields to the client that will be generated runtime
992 // (this provides for future expansion or subclassing of client obj)
993 if ($verbatimClientCopy) {
994 foreach ($client as $fld => $val) {
995 if ($fld != 'debug' && $fld != 'return_type') {
996 $val = var_export($val, true);
997 $code .= "\$client->$fld = $val;\n";
1001 // only make sure that client always returns the correct data type
1002 $code .= "\$client->return_type = '{$prefix}vals';\n";
1003 //$code .= "\$client->setDebug(\$debug);\n";