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1<?php
2/**
3 * PHP-XMLRPC "wrapper" functions
4 * Generate stubs to transparently access xmlrpc methods as php functions and viceversa
5 *
6 * @version $Id: xmlrpc_wrappers.inc,v 1.12 2008/03/06 18:58:44 ggiunta Exp $
7 * @author Gaetano Giunta
8 * @copyright (C) 2006-2008 G. Giunta
9 * @license code licensed under the BSD License: http://phpxmlrpc.sourceforge.net/license.txt
10 *
11 * @todo separate introspection from code generation for func-2-method wrapping
12 * @todo use some better templating system from code generation?
13 * @todo implement method wrapping with preservation of php objs in calls
14 * @todo when wrapping methods without obj rebuilding, use return_type = 'phpvals' (faster)
15 * @todo implement self-parsing of php code for PHP <= 4
16 */
17
18 // requires: xmlrpc.inc
19
20 /**
21 * Given a string defining a php type or phpxmlrpc type (loosely defined: strings
22 * accepted come from javadoc blocks), return corresponding phpxmlrpc type.
23 * NB: for php 'resource' types returns empty string, since resources cannot be serialized;
24 * for php class names returns 'struct', since php objects can be serialized as xmlrpc structs
25 * @param string $phptype
26 * @return string
27 */
28 function php_2_xmlrpc_type($phptype)
29 {
30 switch(strtolower($phptype))
31 {
32 case 'string':
33 return $GLOBALS['xmlrpcString'];
34 case 'integer':
35 case $GLOBALS['xmlrpcInt']: // 'int'
36 case $GLOBALS['xmlrpcI4']:
37 return $GLOBALS['xmlrpcInt'];
38 case 'double':
39 return $GLOBALS['xmlrpcDouble'];
40 case 'boolean':
41 return $GLOBALS['xmlrpcBoolean'];
42 case 'array':
43 return $GLOBALS['xmlrpcArray'];
44 case 'object':
45 return $GLOBALS['xmlrpcStruct'];
46 case $GLOBALS['xmlrpcBase64']:
47 case $GLOBALS['xmlrpcStruct']:
48 return strtolower($phptype);
49 case 'resource':
50 return '';
51 default:
52 if(class_exists($phptype))
53 {
54 return $GLOBALS['xmlrpcStruct'];
55 }
56 else
57 {
58 // unknown: might be any 'extended' xmlrpc type
59 return $GLOBALS['xmlrpcValue'];
60 }
61 }
62 }
63
64 /**
65 * Given a string defining a phpxmlrpc type return corresponding php type.
66 * @param string $xmlrpctype
67 * @return string
68 */
69 function xmlrpc_2_php_type($xmlrpctype)
70 {
71 switch(strtolower($xmlrpctype))
72 {
73 case 'base64':
74 case 'datetime.iso8601':
75 case 'string':
76 return $GLOBALS['xmlrpcString'];
77 case 'int':
78 case 'i4':
79 return 'integer';
80 case 'struct':
81 case 'array':
82 return 'array';
83 case 'double':
84 return 'float';
85 case 'undefined':
86 return 'mixed';
87 case 'boolean':
88 case 'null':
89 default:
90 // unknown: might be any xmlrpc type
91 return strtolower($xmlrpctype);
92 }
93 }
94
95 /**
96 * Given a user-defined PHP function, create a PHP 'wrapper' function that can
97 * be exposed as xmlrpc method from an xmlrpc_server object and called from remote
98 * clients (as well as its corresponding signature info).
99 *
100 * Since php is a typeless language, to infer types of input and output parameters,
101 * it relies on parsing the javadoc-style comment block associated with the given
102 * function. Usage of xmlrpc native types (such as datetime.dateTime.iso8601 and base64)
103 * in the @param tag is also allowed, if you need the php function to receive/send
104 * data in that particular format (note that base64 encoding/decoding is transparently
105 * carried out by the lib, while datetime vals are passed around as strings)
106 *
107 * Known limitations:
108 * - requires PHP 5.0.3 +
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?)
120 *
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 xmlrpcmsg obj as parameter)
123 * is by making use of the functions_parameters_type class member.
124 *
125 * @param string $funcname the name of the PHP user function to be exposed as xmlrpc method; array($obj, 'methodname') might be ok too, in the future...
126 * @param string $newfuncname (optional) name for function to be created
127 * @param array $extra_options (optional) array of options for conversion. valid values include:
128 * bool return_source when true, php code w. function definition will be returned, not evaluated
129 * bool encode_php_objs let php objects be sent to server using the 'improved' xmlrpc notation, so server can deserialize them as php objects
130 * bool decode_php_objs --- WARNING !!! possible security hazard. only use it with trusted servers ---
131 * bool suppress_warnings remove from produced xml any runtime warnings due to the php function being invoked
132 * @return false on error, or an array containing the name of the new php function,
133 * its signature and docs, to be used in the server dispatch map
134 *
135 * @todo decide how to deal with params passed by ref: bomb out or allow?
136 * @todo finish using javadoc info to build method sig if all params are named but out of order
137 * @todo add a check for params of 'resource' type
138 * @todo add some trigger_errors / error_log when returning false?
139 * @todo what to do when the PHP function returns NULL? we are currently an empty string value...
140 * @todo add an option to suppress php warnings in invocation of user function, similar to server debug level 3?
141 */
142 function wrap_php_function($funcname, $newfuncname='', $extra_options=array())
143 {
144 $buildit = isset($extra_options['return_source']) ? !($extra_options['return_source']) : true;
145 $prefix = isset($extra_options['prefix']) ? $extra_options['prefix'] : 'xmlrpc';
146 $encode_php_objects = isset($extra_options['encode_php_objs']) ? (bool)$extra_options['encode_php_objs'] : false;
147 $decode_php_objects = isset($extra_options['decode_php_objs']) ? (bool)$extra_options['decode_php_objs'] : false;
148 $catch_warnings = isset($extra_options['suppress_warnings']) && $extra_options['suppress_warnings'] ? '@' : '';
149
150 if(version_compare(phpversion(), '5.0.3') == -1)
151 {
152 // up to php 5.0.3 some useful reflection methods were missing
153 error_log('XML-RPC: cannot not wrap php functions unless running php version bigger than 5.0.3');
154 return false;
155 }
156 if((is_array($funcname) && !method_exists($funcname[0], $funcname[1])) || !function_exists($funcname))
157 {
158 error_log('XML-RPC: function to be wrapped is not defined: '.$funcname);
159 return false;
160 }
161 else
162 {
163 // determine name of new php function
164 if($newfuncname == '')
165 {
166 if(is_array($funcname))
167 {
168 $xmlrpcfuncname = "{$prefix}_".implode('_', $funcname);
169 }
170 else
171 {
172 $xmlrpcfuncname = "{$prefix}_$funcname";
173 }
174 }
175 else
176 {
177 $xmlrpcfuncname = $newfuncname;
178 }
179 while($buildit && function_exists($xmlrpcfuncname))
180 {
181 $xmlrpcfuncname .= 'x';
182 }
183
184 // start to introspect PHP code
185 $func =& new ReflectionFunction($funcname);
186 if($func->isInternal())
187 {
188 // Note: from PHP 5.1.0 onward, we will possibly be able to use invokeargs
189 // instead of getparameters to fully reflect internal php functions ?
190 error_log('XML-RPC: function to be wrapped is internal: '.$funcname);
191 return false;
192 }
193
194 // retrieve parameter names, types and description from javadoc comments
195
196 // function description
197 $desc = '';
198 // type of return val: by default 'any'
199 $returns = $GLOBALS['xmlrpcValue'];
200 // desc of return val
201 $returnsDocs = '';
202 // type + name of function parameters
203 $paramDocs = array();
204
205 $docs = $func->getDocComment();
206 if($docs != '')
207 {
208 $docs = explode("\n", $docs);
209 $i = 0;
210 foreach($docs as $doc)
211 {
212 $doc = trim($doc, " \r\t/*");
213 if(strlen($doc) && strpos($doc, '@') !== 0 && !$i)
214 {
215 if($desc)
216 {
217 $desc .= "\n";
218 }
219 $desc .= $doc;
220 }
221 elseif(strpos($doc, '@param') === 0)
222 {
223 // syntax: @param type [$name] desc
224 if(preg_match('/@param\s+(\S+)(\s+\$\S+)?\s+(.+)/', $doc, $matches))
225 {
226 if(strpos($matches[1], '|'))
227 {
228 //$paramDocs[$i]['type'] = explode('|', $matches[1]);
229 $paramDocs[$i]['type'] = 'mixed';
230 }
231 else
232 {
233 $paramDocs[$i]['type'] = $matches[1];
234 }
235 $paramDocs[$i]['name'] = trim($matches[2]);
236 $paramDocs[$i]['doc'] = $matches[3];
237 }
238 $i++;
239 }
240 elseif(strpos($doc, '@return') === 0)
241 {
242 // syntax: @return type desc
243 //$returns = preg_split('/\s+/', $doc);
244 if(preg_match('/@return\s+(\S+)\s+(.+)/', $doc, $matches))
245 {
246 $returns = php_2_xmlrpc_type($matches[1]);
247 if(isset($matches[2]))
248 {
249 $returnsDocs = $matches[2];
250 }
251 }
252 }
253 }
254 }
255
256 // execute introspection of actual function prototype
257 $params = array();
258 $i = 0;
259 foreach($func->getParameters() as $paramobj)
260 {
261 $params[$i] = array();
262 $params[$i]['name'] = '$'.$paramobj->getName();
263 $params[$i]['isoptional'] = $paramobj->isOptional();
264 $i++;
265 }
266
267
268 // start building of PHP code to be eval'd
269 $innercode = '';
270 $i = 0;
271 $parsvariations = array();
272 $pars = array();
273 $pnum = count($params);
274 foreach($params as $param)
275 {
276 if (isset($paramDocs[$i]['name']) && $paramDocs[$i]['name'] && strtolower($paramDocs[$i]['name']) != strtolower($param['name']))
277 {
278 // param name from phpdoc info does not match param definition!
279 $paramDocs[$i]['type'] = 'mixed';
280 }
281
282 if($param['isoptional'])
283 {
284 // this particular parameter is optional. save as valid previous list of parameters
285 $innercode .= "if (\$paramcount > $i) {\n";
286 $parsvariations[] = $pars;
287 }
288 $innercode .= "\$p$i = \$msg->getParam($i);\n";
289 if ($decode_php_objects)
290 {
291 $innercode .= "if (\$p{$i}->kindOf() == 'scalar') \$p$i = \$p{$i}->scalarval(); else \$p$i = php_{$prefix}_decode(\$p$i, array('decode_php_objs'));\n";
292 }
293 else
294 {
295 $innercode .= "if (\$p{$i}->kindOf() == 'scalar') \$p$i = \$p{$i}->scalarval(); else \$p$i = php_{$prefix}_decode(\$p$i);\n";
296 }
297
298 $pars[] = "\$p$i";
299 $i++;
300 if($param['isoptional'])
301 {
302 $innercode .= "}\n";
303 }
304 if($i == $pnum)
305 {
306 // last allowed parameters combination
307 $parsvariations[] = $pars;
308 }
309 }
310
311 $sigs = array();
312 $psigs = array();
313 if(count($parsvariations) == 0)
314 {
315 // only known good synopsis = no parameters
316 $parsvariations[] = array();
317 $minpars = 0;
318 }
319 else
320 {
321 $minpars = count($parsvariations[0]);
322 }
323
324 if($minpars)
325 {
326 // add to code the check for min params number
327 // NB: this check needs to be done BEFORE decoding param values
328 $innercode = "\$paramcount = \$msg->getNumParams();\n" .
329 "if (\$paramcount < $minpars) return new {$prefix}resp(0, {$GLOBALS['xmlrpcerr']['incorrect_params']}, '{$GLOBALS['xmlrpcstr']['incorrect_params']}');\n" . $innercode;
330 }
331 else
332 {
333 $innercode = "\$paramcount = \$msg->getNumParams();\n" . $innercode;
334 }
335
336 $innercode .= "\$np = false;\n";
337 foreach($parsvariations as $pars)
338 {
339 $innercode .= "if (\$paramcount == " . count($pars) . ") \$retval = {$catch_warnings}$funcname(" . implode(',', $pars) . "); else\n";
340 // build a 'generic' signature (only use an appropriate return type)
341 $sig = array($returns);
342 $psig = array($returnsDocs);
343 for($i=0; $i < count($pars); $i++)
344 {
345 if (isset($paramDocs[$i]['type']))
346 {
347 $sig[] = php_2_xmlrpc_type($paramDocs[$i]['type']);
348 }
349 else
350 {
351 $sig[] = $GLOBALS['xmlrpcValue'];
352 }
353 $psig[] = isset($paramDocs[$i]['doc']) ? $paramDocs[$i]['doc'] : '';
354 }
355 $sigs[] = $sig;
356 $psigs[] = $psig;
357 }
358 $innercode .= "\$np = true;\n";
359 $innercode .= "if (\$np) return new {$prefix}resp(0, {$GLOBALS['xmlrpcerr']['incorrect_params']}, '{$GLOBALS['xmlrpcstr']['incorrect_params']}'); else {\n";
360 //$innercode .= "if (\$_xmlrpcs_error_occurred) return new xmlrpcresp(0, $GLOBALS['xmlrpcerr']user, \$_xmlrpcs_error_occurred); else\n";
361 $innercode .= "if (is_a(\$retval, '{$prefix}resp')) return \$retval; else\n";
362 if($returns == $GLOBALS['xmlrpcDateTime'] || $returns == $GLOBALS['xmlrpcBase64'])
363 {
364 $innercode .= "return new {$prefix}resp(new {$prefix}val(\$retval, '$returns'));";
365 }
366 else
367 {
368 if ($encode_php_objects)
369 $innercode .= "return new {$prefix}resp(php_{$prefix}_encode(\$retval, array('encode_php_objs')));\n";
370 else
371 $innercode .= "return new {$prefix}resp(php_{$prefix}_encode(\$retval));\n";
372 }
373 // shall we exclude functions returning by ref?
374 // if($func->returnsReference())
375 // return false;
376 $code = "function $xmlrpcfuncname(\$msg) {\n" . $innercode . "}\n}";
377 //print_r($code);
378 if ($buildit)
379 {
380 $allOK = 0;
381 eval($code.'$allOK=1;');
382 // alternative
383 //$xmlrpcfuncname = create_function('$m', $innercode);
384
385 if(!$allOK)
386 {
387 error_log('XML-RPC: could not create function '.$xmlrpcfuncname.' to wrap php function '.$funcname);
388 return false;
389 }
390 }
391
392 /// @todo examine if $paramDocs matches $parsvariations and build array for
393 /// usage as method signature, plus put together a nice string for docs
394
395 $ret = array('function' => $xmlrpcfuncname, 'signature' => $sigs, 'docstring' => $desc, 'signature_docs' => $psigs, 'source' => $code);
396 return $ret;
397 }
398 }
399
400 /**
401 * Given an xmlrpc client and a method name, register a php wrapper function
402 * that will call it and return results using native php types for both
403 * params and results. The generated php function will return an xmlrpcresp
404 * oject for failed xmlrpc calls
405 *
406 * Known limitations:
407 * - server must support system.methodsignature for the wanted xmlrpc method
408 * - for methods that expose many signatures, only one can be picked (we
409 * could in priciple check if signatures differ only by number of params
410 * and not by type, but it would be more complication than we can spare time)
411 * - nested xmlrpc params: the caller of the generated php function has to
412 * encode on its own the params passed to the php function if these are structs
413 * or arrays whose (sub)members include values of type datetime or base64
414 *
415 * Notes: the connection properties of the given client will be copied
416 * and reused for the connection used during the call to the generated
417 * php function.
418 * Calling the generated php function 'might' be slow: a new xmlrpc client
419 * is created on every invocation and an xmlrpc-connection opened+closed.
420 * An extra 'debug' param is appended to param list of xmlrpc method, useful
421 * for debugging purposes.
422 *
423 * @param xmlrpc_client $client an xmlrpc client set up correctly to communicate with target server
424 * @param string $methodname the xmlrpc method to be mapped to a php function
425 * @param array $extra_options array of options that specify conversion details. valid ptions include
426 * integer signum the index of the method signature to use in mapping (if method exposes many sigs)
427 * integer timeout timeout (in secs) to be used when executing function/calling remote method
428 * string protocol 'http' (default), 'http11' or 'https'
429 * string new_function_name the name of php function to create. If unsepcified, lib will pick an appropriate name
430 * string return_source if true return php code w. function definition instead fo function name
431 * bool encode_php_objs let php objects be sent to server using the 'improved' xmlrpc notation, so server can deserialize them as php objects
432 * bool decode_php_objs --- WARNING !!! possible security hazard. only use it with trusted servers ---
433 * mixed return_on_fault a php value to be returned when the xmlrpc call fails/returns a fault response (by default the xmlrpcresp object is returned in this case). If a string is used, '%faultCode%' and '%faultString%' tokens will be substituted with actual error values
434 * bool debug set it to 1 or 2 to see debug results of querying server for method synopsis
435 * @return string the name of the generated php function (or false) - OR AN ARRAY...
436 */
437 function wrap_xmlrpc_method($client, $methodname, $extra_options=0, $timeout=0, $protocol='', $newfuncname='')
438 {
439 // mind numbing: let caller use sane calling convention (as per javadoc, 3 params),
440 // OR the 2.0 calling convention (no ptions) - we really love backward compat, don't we?
441 if (!is_array($extra_options))
442 {
443 $signum = $extra_options;
444 $extra_options = array();
445 }
446 else
447 {
448 $signum = isset($extra_options['signum']) ? (int)$extra_options['signum'] : 0;
449 $timeout = isset($extra_options['timeout']) ? (int)$extra_options['timeout'] : 0;
450 $protocol = isset($extra_options['protocol']) ? $extra_options['protocol'] : '';
451 $newfuncname = isset($extra_options['new_function_name']) ? $extra_options['new_function_name'] : '';
452 }
453 //$encode_php_objects = in_array('encode_php_objects', $extra_options);
454 //$verbatim_client_copy = in_array('simple_client_copy', $extra_options) ? 1 :
455 // in_array('build_class_code', $extra_options) ? 2 : 0;
456
457 $encode_php_objects = isset($extra_options['encode_php_objs']) ? (bool)$extra_options['encode_php_objs'] : false;
458 $decode_php_objects = isset($extra_options['decode_php_objs']) ? (bool)$extra_options['decode_php_objs'] : false;
459 $simple_client_copy = isset($extra_options['simple_client_copy']) ? (int)($extra_options['simple_client_copy']) : 0;
460 $buildit = isset($extra_options['return_source']) ? !($extra_options['return_source']) : true;
461 $prefix = isset($extra_options['prefix']) ? $extra_options['prefix'] : 'xmlrpc';
462 if (isset($extra_options['return_on_fault']))
463 {
464 $decode_fault = true;
465 $fault_response = $extra_options['return_on_fault'];
466 }
467 else
468 {
469 $decode_fault = false;
470 $fault_response = '';
471 }
472 $debug = isset($extra_options['debug']) ? ($extra_options['debug']) : 0;
473
474 $msgclass = $prefix.'msg';
475 $valclass = $prefix.'val';
476 $decodefunc = 'php_'.$prefix.'_decode';
477
478 $msg =& new $msgclass('system.methodSignature');
479 $msg->addparam(new $valclass($methodname));
480 $client->setDebug($debug);
481 $response =& $client->send($msg, $timeout, $protocol);
482 if($response->faultCode())
483 {
484 error_log('XML-RPC: could not retrieve method signature from remote server for method '.$methodname);
485 return false;
486 }
487 else
488 {
489 $msig = $response->value();
490 if ($client->return_type != 'phpvals')
491 {
492 $msig = $decodefunc($msig);
493 }
494 if(!is_array($msig) || count($msig) <= $signum)
495 {
496 error_log('XML-RPC: could not retrieve method signature nr.'.$signum.' from remote server for method '.$methodname);
497 return false;
498 }
499 else
500 {
501 // pick a suitable name for the new function, avoiding collisions
502 if($newfuncname != '')
503 {
504 $xmlrpcfuncname = $newfuncname;
505 }
506 else
507 {
508 // take care to insure that methodname is translated to valid
509 // php function name
510 $xmlrpcfuncname = $prefix.'_'.preg_replace(array('/\./', '/[^a-zA-Z0-9_\x7f-\xff]/'),
511 array('_', ''), $methodname);
512 }
513 while($buildit && function_exists($xmlrpcfuncname))
514 {
515 $xmlrpcfuncname .= 'x';
516 }
517
518 $msig = $msig[$signum];
519 $mdesc = '';
520 // if in 'offline' mode, get method description too.
521 // in online mode, favour speed of operation
522 if(!$buildit)
523 {
524 $msg =& new $msgclass('system.methodHelp');
525 $msg->addparam(new $valclass($methodname));
526 $response =& $client->send($msg, $timeout, $protocol);
527 if (!$response->faultCode())
528 {
529 $mdesc = $response->value();
530 if ($client->return_type != 'phpvals')
531 {
532 $mdesc = $mdesc->scalarval();
533 }
534 }
535 }
536
537 $results = build_remote_method_wrapper_code($client, $methodname,
538 $xmlrpcfuncname, $msig, $mdesc, $timeout, $protocol, $simple_client_copy,
539 $prefix, $decode_php_objects, $encode_php_objects, $decode_fault,
540 $fault_response);
541
542 //print_r($code);
543 if ($buildit)
544 {
545 $allOK = 0;
546 eval($results['source'].'$allOK=1;');
547 // alternative
548 //$xmlrpcfuncname = create_function('$m', $innercode);
549 if($allOK)
550 {
551 return $xmlrpcfuncname;
552 }
553 else
554 {
555 error_log('XML-RPC: could not create function '.$xmlrpcfuncname.' to wrap remote method '.$methodname);
556 return false;
557 }
558 }
559 else
560 {
561 $results['function'] = $xmlrpcfuncname;
562 return $results;
563 }
564 }
565 }
566 }
567
568 /**
569 * Similar to wrap_xmlrpc_method, but will generate a php class that wraps
570 * all xmlrpc methods exposed by the remote server as own methods.
571 * For more details see wrap_xmlrpc_method.
572 * @param xmlrpc_client $client the client obj all set to query the desired server
573 * @param array $extra_options list of options for wrapped code
574 * @return mixed false on error, the name of the created class if all ok or an array with code, class name and comments (if the appropriatevoption is set in extra_options)
575 */
576 function wrap_xmlrpc_server($client, $extra_options=array())
577 {
578 $methodfilter = isset($extra_options['method_filter']) ? $extra_options['method_filter'] : '';
579 $signum = isset($extra_options['signum']) ? (int)$extra_options['signum'] : 0;
580 $timeout = isset($extra_options['timeout']) ? (int)$extra_options['timeout'] : 0;
581 $protocol = isset($extra_options['protocol']) ? $extra_options['protocol'] : '';
582 $newclassname = isset($extra_options['new_class_name']) ? $extra_options['new_class_name'] : '';
583 $encode_php_objects = isset($extra_options['encode_php_objs']) ? (bool)$extra_options['encode_php_objs'] : false;
584 $decode_php_objects = isset($extra_options['decode_php_objs']) ? (bool)$extra_options['decode_php_objs'] : false;
585 $verbatim_client_copy = isset($extra_options['simple_client_copy']) ? !($extra_options['simple_client_copy']) : true;
586 $buildit = isset($extra_options['return_source']) ? !($extra_options['return_source']) : true;
587 $prefix = isset($extra_options['prefix']) ? $extra_options['prefix'] : 'xmlrpc';
588
589 $msgclass = $prefix.'msg';
590 //$valclass = $prefix.'val';
591 $decodefunc = 'php_'.$prefix.'_decode';
592
593 $msg =& new $msgclass('system.listMethods');
594 $response =& $client->send($msg, $timeout, $protocol);
595 if($response->faultCode())
596 {
597 error_log('XML-RPC: could not retrieve method list from remote server');
598 return false;
599 }
600 else
601 {
602 $mlist = $response->value();
603 if ($client->return_type != 'phpvals')
604 {
605 $mlist = $decodefunc($mlist);
606 }
607 if(!is_array($mlist) || !count($mlist))
608 {
609 error_log('XML-RPC: could not retrieve meaningful method list from remote server');
610 return false;
611 }
612 else
613 {
614 // pick a suitable name for the new function, avoiding collisions
615 if($newclassname != '')
616 {
617 $xmlrpcclassname = $newclassname;
618 }
619 else
620 {
621 $xmlrpcclassname = $prefix.'_'.preg_replace(array('/\./', '/[^a-zA-Z0-9_\x7f-\xff]/'),
622 array('_', ''), $client->server).'_client';
623 }
624 while($buildit && class_exists($xmlrpcclassname))
625 {
626 $xmlrpcclassname .= 'x';
627 }
628
629 /// @todo add function setdebug() to new class, to enable/disable debugging
630 $source = "class $xmlrpcclassname\n{\nvar \$client;\n\n";
631 $source .= "function $xmlrpcclassname()\n{\n";
632 $source .= build_client_wrapper_code($client, $verbatim_client_copy, $prefix);
633 $source .= "\$this->client =& \$client;\n}\n\n";
634 $opts = array('simple_client_copy' => 2, 'return_source' => true,
635 'timeout' => $timeout, 'protocol' => $protocol,
636 'encode_php_objs' => $encode_php_objects, 'prefix' => $prefix,
637 'decode_php_objs' => $decode_php_objects
638 );
639 /// @todo build javadoc for class definition, too
640 foreach($mlist as $mname)
641 {
642 if ($methodfilter == '' || preg_match($methodfilter, $mname))
643 {
644 $opts['new_function_name'] = preg_replace(array('/\./', '/[^a-zA-Z0-9_\x7f-\xff]/'),
645 array('_', ''), $mname);
646 $methodwrap = wrap_xmlrpc_method($client, $mname, $opts);
647 if ($methodwrap)
648 {
649 if (!$buildit)
650 {
651 $source .= $methodwrap['docstring'];
652 }
653 $source .= $methodwrap['source']."\n";
654 }
655 else
656 {
657 error_log('XML-RPC: will not create class method to wrap remote method '.$mname);
658 }
659 }
660 }
661 $source .= "}\n";
662 if ($buildit)
663 {
664 $allOK = 0;
665 eval($source.'$allOK=1;');
666 // alternative
667 //$xmlrpcfuncname = create_function('$m', $innercode);
668 if($allOK)
669 {
670 return $xmlrpcclassname;
671 }
672 else
673 {
674 error_log('XML-RPC: could not create class '.$xmlrpcclassname.' to wrap remote server '.$client->server);
675 return false;
676 }
677 }
678 else
679 {
680 return array('class' => $xmlrpcclassname, 'code' => $source, 'docstring' => '');
681 }
682 }
683 }
684 }
685
686 /**
687 * Given the necessary info, build php code that creates a new function to
688 * invoke a remote xmlrpc method.
689 * Take care that no full checking of input parameters is done to ensure that
690 * valid php code is emitted.
691 * Note: real spaghetti code follows...
692 * @access private
693 */
694 function build_remote_method_wrapper_code($client, $methodname, $xmlrpcfuncname,
695 $msig, $mdesc='', $timeout=0, $protocol='', $client_copy_mode=0, $prefix='xmlrpc',
696 $decode_php_objects=false, $encode_php_objects=false, $decode_fault=false,
697 $fault_response='')
698 {
699 $code = "function $xmlrpcfuncname (";
700 if ($client_copy_mode < 2)
701 {
702 // client copy mode 0 or 1 == partial / full client copy in emitted code
703 $innercode = build_client_wrapper_code($client, $client_copy_mode, $prefix);
704 $innercode .= "\$client->setDebug(\$debug);\n";
705 $this_ = '';
706 }
707 else
708 {
709 // client copy mode 2 == no client copy in emitted code
710 $innercode = '';
711 $this_ = 'this->';
712 }
713 $innercode .= "\$msg =& new {$prefix}msg('$methodname');\n";
714
715 if ($mdesc != '')
716 {
717 // take care that PHP comment is not terminated unwillingly by method description
718 $mdesc = "/**\n* ".str_replace('*/', '* /', $mdesc)."\n";
719 }
720 else
721 {
722 $mdesc = "/**\nFunction $xmlrpcfuncname\n";
723 }
724
725 // param parsing
726 $plist = array();
727 $pcount = count($msig);
728 for($i = 1; $i < $pcount; $i++)
729 {
730 $plist[] = "\$p$i";
731 $ptype = $msig[$i];
732 if($ptype == 'i4' || $ptype == 'int' || $ptype == 'boolean' || $ptype == 'double' ||
733 $ptype == 'string' || $ptype == 'dateTime.iso8601' || $ptype == 'base64' || $ptype == 'null')
734 {
735 // only build directly xmlrpcvals when type is known and scalar
736 $innercode .= "\$p$i =& new {$prefix}val(\$p$i, '$ptype');\n";
737 }
738 else
739 {
740 if ($encode_php_objects)
741 {
742 $innercode .= "\$p$i =& php_{$prefix}_encode(\$p$i, array('encode_php_objs'));\n";
743 }
744 else
745 {
746 $innercode .= "\$p$i =& php_{$prefix}_encode(\$p$i);\n";
747 }
748 }
749 $innercode .= "\$msg->addparam(\$p$i);\n";
750 $mdesc .= '* @param '.xmlrpc_2_php_type($ptype)." \$p$i\n";
751 }
752 if ($client_copy_mode < 2)
753 {
754 $plist[] = '$debug=0';
755 $mdesc .= "* @param int \$debug when 1 (or 2) will enable debugging of the underlying {$prefix} call (defaults to 0)\n";
756 }
757 $plist = implode(', ', $plist);
758 $mdesc .= '* @return '.xmlrpc_2_php_type($msig[0])." (or an {$prefix}resp obj instance if call fails)\n*/\n";
759
760 $innercode .= "\$res =& \${$this_}client->send(\$msg, $timeout, '$protocol');\n";
761 if ($decode_fault)
762 {
763 if (is_string($fault_response) && ((strpos($fault_response, '%faultCode%') !== false) || (strpos($fault_response, '%faultString%') !== false)))
764 {
765 $respcode = "str_replace(array('%faultCode%', '%faultString%'), array(\$res->faultCode(), \$res->faultString()), '".str_replace("'", "''", $fault_response)."')";
766 }
767 else
768 {
769 $respcode = var_export($fault_response, true);
770 }
771 }
772 else
773 {
774 $respcode = '$res';
775 }
776 if ($decode_php_objects)
777 {
778 $innercode .= "if (\$res->faultcode()) return $respcode; else return php_{$prefix}_decode(\$res->value(), array('decode_php_objs'));";
779 }
780 else
781 {
782 $innercode .= "if (\$res->faultcode()) return $respcode; else return php_{$prefix}_decode(\$res->value());";
783 }
784
785 $code = $code . $plist. ") {\n" . $innercode . "\n}\n";
786
787 return array('source' => $code, 'docstring' => $mdesc);
788 }
789
790 /**
791 * Given necessary info, generate php code that will rebuild a client object
792 * Take care that no full checking of input parameters is done to ensure that
793 * valid php code is emitted.
794 * @access private
795 */
796 function build_client_wrapper_code($client, $verbatim_client_copy, $prefix='xmlrpc')
797 {
798 $code = "\$client =& new {$prefix}_client('".str_replace("'", "\'", $client->path).
799 "', '" . str_replace("'", "\'", $client->server) . "', $client->port);\n";
800
801 // copy all client fields to the client that will be generated runtime
802 // (this provides for future expansion or subclassing of client obj)
803 if ($verbatim_client_copy)
804 {
805 foreach($client as $fld => $val)
806 {
807 if($fld != 'debug' && $fld != 'return_type')
808 {
809 $val = var_export($val, true);
810 $code .= "\$client->$fld = $val;\n";
811 }
812 }
813 }
814 // only make sure that client always returns the correct data type
815 $code .= "\$client->return_type = '{$prefix}vals';\n";
816 //$code .= "\$client->setDebug(\$debug);\n";
817 return $code;
818 }
819?> \ No newline at end of file
generated by cgit-pink 1.4.1 (git 2.36.1) at 2025-12-18 22:19:33 +0000