/framework/libs/xmlrpc_wrappers.php
PHP | 947 lines | 524 code | 32 blank | 391 comment | 92 complexity | 85aa7a476bf4de0f52d981cf03b5c1a4 MD5 | raw file
Possible License(s): GPL-2.0
- <?php
- defined('SW_') or die('Access Error');
- /**
- * PHP-XMLRPC "wrapper" functions
- * Generate stubs to transparently access xmlrpc methods as php functions and viceversa
- *
- * @version $Id: xmlrpc_wrappers.inc,v 1.13 2008/09/20 01:23:47 ggiunta Exp $
- * @author Gaetano Giunta
- * @copyright (C) 2006-2008 G. Giunta
- * @license code licensed under the BSD License: http://phpxmlrpc.sourceforge.net/license.txt
- *
- * @todo separate introspection from code generation for func-2-method wrapping
- * @todo use some better templating system for code generation?
- * @todo implement method wrapping with preservation of php objs in calls
- * @todo when wrapping methods without obj rebuilding, use return_type = 'phpvals' (faster)
- * @todo implement self-parsing of php code for PHP <= 4
- */
- // requires: xmlrpc.inc
- /**
- * Given a string defining a php type or phpxmlrpc type (loosely defined: strings
- * accepted come from javadoc blocks), return corresponding phpxmlrpc type.
- * NB: for php 'resource' types returns empty string, since resources cannot be serialized;
- * for php class names returns 'struct', since php objects can be serialized as xmlrpc structs
- * @param string $phptype
- * @return string
- */
- function php_2_xmlrpc_type($phptype)
- {
- switch(strtolower($phptype))
- {
- case 'string':
- return $GLOBALS['xmlrpcString'];
- case 'integer':
- case $GLOBALS['xmlrpcInt']: // 'int'
- case $GLOBALS['xmlrpcI4']:
- return $GLOBALS['xmlrpcInt'];
- case 'double':
- return $GLOBALS['xmlrpcDouble'];
- case 'boolean':
- return $GLOBALS['xmlrpcBoolean'];
- case 'array':
- return $GLOBALS['xmlrpcArray'];
- case 'object':
- return $GLOBALS['xmlrpcStruct'];
- case $GLOBALS['xmlrpcBase64']:
- case $GLOBALS['xmlrpcStruct']:
- return strtolower($phptype);
- case 'resource':
- return '';
- default:
- if(class_exists($phptype))
- {
- return $GLOBALS['xmlrpcStruct'];
- }
- else
- {
- // unknown: might be any 'extended' xmlrpc type
- return $GLOBALS['xmlrpcValue'];
- }
- }
- }
- /**
- * Given a string defining a phpxmlrpc type return corresponding php type.
- * @param string $xmlrpctype
- * @return string
- */
- function xmlrpc_2_php_type($xmlrpctype)
- {
- switch(strtolower($xmlrpctype))
- {
- case 'base64':
- case 'datetime.iso8601':
- case 'string':
- return $GLOBALS['xmlrpcString'];
- case 'int':
- case 'i4':
- return 'integer';
- case 'struct':
- case 'array':
- return 'array';
- case 'double':
- return 'float';
- case 'undefined':
- return 'mixed';
- case 'boolean':
- case 'null':
- default:
- // unknown: might be any xmlrpc type
- return strtolower($xmlrpctype);
- }
- }
- /**
- * Given a user-defined PHP function, create a PHP 'wrapper' function that can
- * be exposed as xmlrpc method from an xmlrpc_server object and called from remote
- * clients (as well as its corresponding signature info).
- *
- * Since php is a typeless language, to infer types of input and output parameters,
- * it relies on parsing the javadoc-style comment block associated with the given
- * function. Usage of xmlrpc native types (such as datetime.dateTime.iso8601 and base64)
- * in the @param tag is also allowed, if you need the php function to receive/send
- * data in that particular format (note that base64 encoding/decoding is transparently
- * carried out by the lib, while datetime vals are passed around as strings)
- *
- * Known limitations:
- * - requires PHP 5.0.3 +
- * - only works for user-defined functions, not for PHP internal functions
- * (reflection does not support retrieving number/type of params for those)
- * - functions returning php objects will generate special xmlrpc responses:
- * when the xmlrpc decoding of those responses is carried out by this same lib, using
- * the appropriate param in php_xmlrpc_decode, the php objects will be rebuilt.
- * In short: php objects can be serialized, too (except for their resource members),
- * using this function.
- * Other libs might choke on the very same xml that will be generated in this case
- * (i.e. it has a nonstandard attribute on struct element tags)
- * - usage of javadoc @param tags using param names in a different order from the
- * function prototype is not considered valid (to be fixed?)
- *
- * Note that since rel. 2.0RC3 the preferred method to have the server call 'standard'
- * php functions (ie. functions not expecting a single xmlrpcmsg obj as parameter)
- * is by making use of the functions_parameters_type class member.
- *
- * @param string $funcname the name of the PHP user function to be exposed as xmlrpc method; array($obj, 'methodname') and array('class', 'methodname') are ok too
- * @param string $newfuncname (optional) name for function to be created
- * @param array $extra_options (optional) array of options for conversion. valid values include:
- * bool return_source when true, php code w. function definition will be returned, not evaluated
- * bool encode_php_objs let php objects be sent to server using the 'improved' xmlrpc notation, so server can deserialize them as php objects
- * bool decode_php_objs --- WARNING !!! possible security hazard. only use it with trusted servers ---
- * bool suppress_warnings remove from produced xml any runtime warnings due to the php function being invoked
- * @return false on error, or an array containing the name of the new php function,
- * its signature and docs, to be used in the server dispatch map
- *
- * @todo decide how to deal with params passed by ref: bomb out or allow?
- * @todo finish using javadoc info to build method sig if all params are named but out of order
- * @todo add a check for params of 'resource' type
- * @todo add some trigger_errors / error_log when returning false?
- * @todo what to do when the PHP function returns NULL? we are currently returning an empty string value...
- * @todo add an option to suppress php warnings in invocation of user function, similar to server debug level 3?
- * @todo if $newfuncname is empty, we could use create_user_func instead of eval, as it is possibly faster
- * @todo add a verbatim_object_copy parameter to allow avoiding the same obj instance?
- */
- function wrap_php_function($funcname, $newfuncname='', $extra_options=array())
- {
- $buildit = isset($extra_options['return_source']) ? !($extra_options['return_source']) : true;
- $prefix = isset($extra_options['prefix']) ? $extra_options['prefix'] : 'xmlrpc';
- $encode_php_objects = isset($extra_options['encode_php_objs']) ? (bool)$extra_options['encode_php_objs'] : false;
- $decode_php_objects = isset($extra_options['decode_php_objs']) ? (bool)$extra_options['decode_php_objs'] : false;
- $catch_warnings = isset($extra_options['suppress_warnings']) && $extra_options['suppress_warnings'] ? '@' : '';
- if(version_compare(phpversion(), '5.0.3') == -1)
- {
- // up to php 5.0.3 some useful reflection methods were missing
- error_log('XML-RPC: cannot not wrap php functions unless running php version bigger than 5.0.3');
- return false;
- }
- $exists = false;
- if(is_array($funcname))
- {
- if(count($funcname) < 2 || (!is_string($funcname[0]) && !is_object($funcname[0])))
- {
- error_log('XML-RPC: syntax for function to be wrapped is wrong');
- return false;
- }
- if(is_string($funcname[0]))
- {
- $plainfuncname = implode('::', $funcname);
- }
- elseif(is_object($funcname[0]))
- {
- $plainfuncname = get_class($funcname[0]) . '->' . $funcname[1];
- }
- $exists = method_exists($funcname[0], $funcname[1]);
- }
- else
- {
- $plainfuncname = $funcname;
- $exists = function_exists($funcname);
- }
- if(!$exists)
- {
- error_log('XML-RPC: function to be wrapped is not defined: '.$plainfuncname);
- return false;
- }
- else
- {
- // determine name of new php function
- if($newfuncname == '')
- {
- if(is_array($funcname))
- {
- if(is_string($funcname[0]))
- $xmlrpcfuncname = "{$prefix}_".implode('_', $funcname);
- else
- $xmlrpcfuncname = "{$prefix}_".get_class($funcname[0]) . '_' . $funcname[1];
- }
- else
- {
- $xmlrpcfuncname = "{$prefix}_$funcname";
- }
- }
- else
- {
- $xmlrpcfuncname = $newfuncname;
- }
- while($buildit && function_exists($xmlrpcfuncname))
- {
- $xmlrpcfuncname .= 'x';
- }
- // start to introspect PHP code
- if(is_array($funcname))
- {
- $func =& new ReflectionMethod($funcname[0], $funcname[1]);
- if($func->isPrivate())
- {
- error_log('XML-RPC: method to be wrapped is private: '.$plainfuncname);
- return false;
- }
- if($func->isProtected())
- {
- error_log('XML-RPC: method to be wrapped is protected: '.$plainfuncname);
- return false;
- }
- if($func->isConstructor())
- {
- error_log('XML-RPC: method to be wrapped is the constructor: '.$plainfuncname);
- return false;
- }
- if($func->isDestructor())
- {
- error_log('XML-RPC: method to be wrapped is the destructor: '.$plainfuncname);
- return false;
- }
- if($func->isAbstract())
- {
- error_log('XML-RPC: method to be wrapped is abstract: '.$plainfuncname);
- return false;
- }
- /// @todo add more checks for static vs. nonstatic?
- }
- else
- {
- $func =& new ReflectionFunction($funcname);
- }
- if($func->isInternal())
- {
- // Note: from PHP 5.1.0 onward, we will possibly be able to use invokeargs
- // instead of getparameters to fully reflect internal php functions ?
- error_log('XML-RPC: function to be wrapped is internal: '.$plainfuncname);
- return false;
- }
- // retrieve parameter names, types and description from javadoc comments
- // function description
- $desc = '';
- // type of return val: by default 'any'
- $returns = $GLOBALS['xmlrpcValue'];
- // desc of return val
- $returnsDocs = '';
- // type + name of function parameters
- $paramDocs = array();
- $docs = $func->getDocComment();
- if($docs != '')
- {
- $docs = explode("\n", $docs);
- $i = 0;
- foreach($docs as $doc)
- {
- $doc = trim($doc, " \r\t/*");
- if(strlen($doc) && strpos($doc, '@') !== 0 && !$i)
- {
- if($desc)
- {
- $desc .= "\n";
- }
- $desc .= $doc;
- }
- elseif(strpos($doc, '@param') === 0)
- {
- // syntax: @param type [$name] desc
- if(preg_match('/@param\s+(\S+)(\s+\$\S+)?\s+(.+)/', $doc, $matches))
- {
- if(strpos($matches[1], '|'))
- {
- //$paramDocs[$i]['type'] = explode('|', $matches[1]);
- $paramDocs[$i]['type'] = 'mixed';
- }
- else
- {
- $paramDocs[$i]['type'] = $matches[1];
- }
- $paramDocs[$i]['name'] = trim($matches[2]);
- $paramDocs[$i]['doc'] = $matches[3];
- }
- $i++;
- }
- elseif(strpos($doc, '@return') === 0)
- {
- // syntax: @return type desc
- //$returns = preg_split('/\s+/', $doc);
- if(preg_match('/@return\s+(\S+)\s+(.+)/', $doc, $matches))
- {
- $returns = php_2_xmlrpc_type($matches[1]);
- if(isset($matches[2]))
- {
- $returnsDocs = $matches[2];
- }
- }
- }
- }
- }
- // execute introspection of actual function prototype
- $params = array();
- $i = 0;
- foreach($func->getParameters() as $paramobj)
- {
- $params[$i] = array();
- $params[$i]['name'] = '$'.$paramobj->getName();
- $params[$i]['isoptional'] = $paramobj->isOptional();
- $i++;
- }
- // start building of PHP code to be eval'd
- $innercode = '';
- $i = 0;
- $parsvariations = array();
- $pars = array();
- $pnum = count($params);
- foreach($params as $param)
- {
- if (isset($paramDocs[$i]['name']) && $paramDocs[$i]['name'] && strtolower($paramDocs[$i]['name']) != strtolower($param['name']))
- {
- // param name from phpdoc info does not match param definition!
- $paramDocs[$i]['type'] = 'mixed';
- }
- if($param['isoptional'])
- {
- // this particular parameter is optional. save as valid previous list of parameters
- $innercode .= "if (\$paramcount > $i) {\n";
- $parsvariations[] = $pars;
- }
- $innercode .= "\$p$i = \$msg->getParam($i);\n";
- if ($decode_php_objects)
- {
- $innercode .= "if (\$p{$i}->kindOf() == 'scalar') \$p$i = \$p{$i}->scalarval(); else \$p$i = php_{$prefix}_decode(\$p$i, array('decode_php_objs'));\n";
- }
- else
- {
- $innercode .= "if (\$p{$i}->kindOf() == 'scalar') \$p$i = \$p{$i}->scalarval(); else \$p$i = php_{$prefix}_decode(\$p$i);\n";
- }
- $pars[] = "\$p$i";
- $i++;
- if($param['isoptional'])
- {
- $innercode .= "}\n";
- }
- if($i == $pnum)
- {
- // last allowed parameters combination
- $parsvariations[] = $pars;
- }
- }
- $sigs = array();
- $psigs = array();
- if(count($parsvariations) == 0)
- {
- // only known good synopsis = no parameters
- $parsvariations[] = array();
- $minpars = 0;
- }
- else
- {
- $minpars = count($parsvariations[0]);
- }
- if($minpars)
- {
- // add to code the check for min params number
- // NB: this check needs to be done BEFORE decoding param values
- $innercode = "\$paramcount = \$msg->getNumParams();\n" .
- "if (\$paramcount < $minpars) return new {$prefix}resp(0, {$GLOBALS['xmlrpcerr']['incorrect_params']}, '{$GLOBALS['xmlrpcstr']['incorrect_params']}');\n" . $innercode;
- }
- else
- {
- $innercode = "\$paramcount = \$msg->getNumParams();\n" . $innercode;
- }
- $innercode .= "\$np = false;\n";
- // since there are no closures in php, if we are given an object instance,
- // we store a pointer to it in a global var...
- if ( is_array($funcname) && is_object($funcname[0]) )
- {
- $GLOBALS['xmlrpcWPFObjHolder'][$xmlrpcfuncname] =& $funcname[0];
- $innercode .= "\$obj =& \$GLOBALS['xmlrpcWPFObjHolder']['$xmlrpcfuncname'];\n";
- $realfuncname = '$obj->'.$funcname[1];
- }
- else
- {
- $realfuncname = $plainfuncname;
- }
- foreach($parsvariations as $pars)
- {
- $innercode .= "if (\$paramcount == " . count($pars) . ") \$retval = {$catch_warnings}$realfuncname(" . implode(',', $pars) . "); else\n";
- // build a 'generic' signature (only use an appropriate return type)
- $sig = array($returns);
- $psig = array($returnsDocs);
- for($i=0; $i < count($pars); $i++)
- {
- if (isset($paramDocs[$i]['type']))
- {
- $sig[] = php_2_xmlrpc_type($paramDocs[$i]['type']);
- }
- else
- {
- $sig[] = $GLOBALS['xmlrpcValue'];
- }
- $psig[] = isset($paramDocs[$i]['doc']) ? $paramDocs[$i]['doc'] : '';
- }
- $sigs[] = $sig;
- $psigs[] = $psig;
- }
- $innercode .= "\$np = true;\n";
- $innercode .= "if (\$np) return new {$prefix}resp(0, {$GLOBALS['xmlrpcerr']['incorrect_params']}, '{$GLOBALS['xmlrpcstr']['incorrect_params']}'); else {\n";
- //$innercode .= "if (\$_xmlrpcs_error_occurred) return new xmlrpcresp(0, $GLOBALS['xmlrpcerr']user, \$_xmlrpcs_error_occurred); else\n";
- $innercode .= "if (is_a(\$retval, '{$prefix}resp')) return \$retval; else\n";
- if($returns == $GLOBALS['xmlrpcDateTime'] || $returns == $GLOBALS['xmlrpcBase64'])
- {
- $innercode .= "return new {$prefix}resp(new {$prefix}val(\$retval, '$returns'));";
- }
- else
- {
- if ($encode_php_objects)
- $innercode .= "return new {$prefix}resp(php_{$prefix}_encode(\$retval, array('encode_php_objs')));\n";
- else
- $innercode .= "return new {$prefix}resp(php_{$prefix}_encode(\$retval));\n";
- }
- // shall we exclude functions returning by ref?
- // if($func->returnsReference())
- // return false;
- $code = "function $xmlrpcfuncname(\$msg) {\n" . $innercode . "}\n}";
- //print_r($code);
- if ($buildit)
- {
- $allOK = 0;
- eval($code.'$allOK=1;');
- // alternative
- //$xmlrpcfuncname = create_function('$m', $innercode);
- if(!$allOK)
- {
- error_log('XML-RPC: could not create function '.$xmlrpcfuncname.' to wrap php function '.$plainfuncname);
- return false;
- }
- }
- /// @todo examine if $paramDocs matches $parsvariations and build array for
- /// usage as method signature, plus put together a nice string for docs
- $ret = array('function' => $xmlrpcfuncname, 'signature' => $sigs, 'docstring' => $desc, 'signature_docs' => $psigs, 'source' => $code);
- return $ret;
- }
- }
- /**
- * Given a user-defined PHP class or php object, map its methods onto a list of
- * PHP 'wrapper' functions that can be exposed as xmlrpc methods from an xmlrpc_server
- * object and called from remote clients (as well as their corresponding signature info).
- *
- * @param mixed $classname the name of the class whose methods are to be exposed as xmlrpc methods, or an object instance of that class
- * @param array $extra_options see the docs for wrap_php_method for more options
- * string method_type 'static', 'nonstatic', 'all' and 'auto' (default); the latter will switch between static and non-static depending on wheter $classname is a class name or object instance
- * @return array or false on failure
- *
- * @todo get_class_methods will return both static and non-static methods.
- * we have to differentiate the action, depending on wheter we recived a class name or object
- */
- function wrap_php_class($classname, $extra_options=array())
- {
- $methodfilter = isset($extra_options['method_filter']) ? $extra_options['method_filter'] : '';
- $methodtype = isset($extra_options['method_type']) ? $extra_options['method_type'] : 'auto';
- if(version_compare(phpversion(), '5.0.3') == -1)
- {
- // up to php 5.0.3 some useful reflection methods were missing
- error_log('XML-RPC: cannot not wrap php functions unless running php version bigger than 5.0.3');
- return false;
- }
- $result = array();
- $mlist = get_class_methods($classname);
- foreach($mlist as $mname)
- {
- if ($methodfilter == '' || preg_match($methodfilter, $mname))
- {
- // echo $mlist."\n";
- $func =& new ReflectionMethod($classname, $mname);
- if(!$func->isPrivate() && !$func->isProtected() && !$func->isConstructor() && !$func->isDestructor() && !$func->isAbstract())
- {
- if(($func->isStatic && ($methodtype == 'all' || $methodtype == 'static' || ($methodtype == 'auto' && is_string($classname)))) ||
- (!$func->isStatic && ($methodtype == 'all' || $methodtype == 'nonstatic' || ($methodtype == 'auto' && is_object($classname)))))
- {
- $methodwrap = wrap_php_function(array($classname, $mname), '', $extra_options);
- if ( $methodwrap )
- {
- $result[$methodwrap['function']] = $methodwrap['function'];
- }
- }
- }
- }
- }
- return $result;
- }
- /**
- * Given an xmlrpc client and a method name, register a php wrapper function
- * that will call it and return results using native php types for both
- * params and results. The generated php function will return an xmlrpcresp
- * oject for failed xmlrpc calls
- *
- * Known limitations:
- * - server must support system.methodsignature for the wanted xmlrpc method
- * - for methods that expose many signatures, only one can be picked (we
- * could in priciple check if signatures differ only by number of params
- * and not by type, but it would be more complication than we can spare time)
- * - nested xmlrpc params: the caller of the generated php function has to
- * encode on its own the params passed to the php function if these are structs
- * or arrays whose (sub)members include values of type datetime or base64
- *
- * Notes: the connection properties of the given client will be copied
- * and reused for the connection used during the call to the generated
- * php function.
- * Calling the generated php function 'might' be slow: a new xmlrpc client
- * is created on every invocation and an xmlrpc-connection opened+closed.
- * An extra 'debug' param is appended to param list of xmlrpc method, useful
- * for debugging purposes.
- *
- * @param xmlrpc_client $client an xmlrpc client set up correctly to communicate with target server
- * @param string $methodname the xmlrpc method to be mapped to a php function
- * @param array $extra_options array of options that specify conversion details. valid ptions include
- * integer signum the index of the method signature to use in mapping (if method exposes many sigs)
- * integer timeout timeout (in secs) to be used when executing function/calling remote method
- * string protocol 'http' (default), 'http11' or 'https'
- * string new_function_name the name of php function to create. If unsepcified, lib will pick an appropriate name
- * string return_source if true return php code w. function definition instead fo function name
- * bool encode_php_objs let php objects be sent to server using the 'improved' xmlrpc notation, so server can deserialize them as php objects
- * bool decode_php_objs --- WARNING !!! possible security hazard. only use it with trusted servers ---
- * mixed return_on_fault a php value to be returned when the xmlrpc call fails/returns a fault response (by default the xmlrpcresp object is returned in this case). If a string is used, '%faultCode%' and '%faultString%' tokens will be substituted with actual error values
- * bool debug set it to 1 or 2 to see debug results of querying server for method synopsis
- * @return string the name of the generated php function (or false) - OR AN ARRAY...
- */
- function wrap_xmlrpc_method($client, $methodname, $extra_options=0, $timeout=0, $protocol='', $newfuncname='')
- {
- // mind numbing: let caller use sane calling convention (as per javadoc, 3 params),
- // OR the 2.0 calling convention (no options) - we really love backward compat, don't we?
- if (!is_array($extra_options))
- {
- $signum = $extra_options;
- $extra_options = array();
- }
- else
- {
- $signum = isset($extra_options['signum']) ? (int)$extra_options['signum'] : 0;
- $timeout = isset($extra_options['timeout']) ? (int)$extra_options['timeout'] : 0;
- $protocol = isset($extra_options['protocol']) ? $extra_options['protocol'] : '';
- $newfuncname = isset($extra_options['new_function_name']) ? $extra_options['new_function_name'] : '';
- }
- //$encode_php_objects = in_array('encode_php_objects', $extra_options);
- //$verbatim_client_copy = in_array('simple_client_copy', $extra_options) ? 1 :
- // in_array('build_class_code', $extra_options) ? 2 : 0;
- $encode_php_objects = isset($extra_options['encode_php_objs']) ? (bool)$extra_options['encode_php_objs'] : false;
- $decode_php_objects = isset($extra_options['decode_php_objs']) ? (bool)$extra_options['decode_php_objs'] : false;
- $simple_client_copy = isset($extra_options['simple_client_copy']) ? (int)($extra_options['simple_client_copy']) : 0;
- $buildit = isset($extra_options['return_source']) ? !($extra_options['return_source']) : true;
- $prefix = isset($extra_options['prefix']) ? $extra_options['prefix'] : 'xmlrpc';
- if (isset($extra_options['return_on_fault']))
- {
- $decode_fault = true;
- $fault_response = $extra_options['return_on_fault'];
- }
- else
- {
- $decode_fault = false;
- $fault_response = '';
- }
- $debug = isset($extra_options['debug']) ? ($extra_options['debug']) : 0;
- $msgclass = $prefix.'msg';
- $valclass = $prefix.'val';
- $decodefunc = 'php_'.$prefix.'_decode';
- $msg =& new $msgclass('system.methodSignature');
- $msg->addparam(new $valclass($methodname));
- $client->setDebug($debug);
- $response =& $client->send($msg, $timeout, $protocol);
- if($response->faultCode())
- {
- error_log('XML-RPC: could not retrieve method signature from remote server for method '.$methodname);
- return false;
- }
- else
- {
- $msig = $response->value();
- if ($client->return_type != 'phpvals')
- {
- $msig = $decodefunc($msig);
- }
- if(!is_array($msig) || count($msig) <= $signum)
- {
- error_log('XML-RPC: could not retrieve method signature nr.'.$signum.' from remote server for method '.$methodname);
- return false;
- }
- else
- {
- // pick a suitable name for the new function, avoiding collisions
- if($newfuncname != '')
- {
- $xmlrpcfuncname = $newfuncname;
- }
- else
- {
- // take care to insure that methodname is translated to valid
- // php function name
- $xmlrpcfuncname = $prefix.'_'.preg_replace(array('/\./', '/[^a-zA-Z0-9_\x7f-\xff]/'),
- array('_', ''), $methodname);
- }
- while($buildit && function_exists($xmlrpcfuncname))
- {
- $xmlrpcfuncname .= 'x';
- }
- $msig = $msig[$signum];
- $mdesc = '';
- // if in 'offline' mode, get method description too.
- // in online mode, favour speed of operation
- if(!$buildit)
- {
- $msg =& new $msgclass('system.methodHelp');
- $msg->addparam(new $valclass($methodname));
- $response =& $client->send($msg, $timeout, $protocol);
- if (!$response->faultCode())
- {
- $mdesc = $response->value();
- if ($client->return_type != 'phpvals')
- {
- $mdesc = $mdesc->scalarval();
- }
- }
- }
- $results = build_remote_method_wrapper_code($client, $methodname,
- $xmlrpcfuncname, $msig, $mdesc, $timeout, $protocol, $simple_client_copy,
- $prefix, $decode_php_objects, $encode_php_objects, $decode_fault,
- $fault_response);
- //print_r($code);
- if ($buildit)
- {
- $allOK = 0;
- eval($results['source'].'$allOK=1;');
- // alternative
- //$xmlrpcfuncname = create_function('$m', $innercode);
- if($allOK)
- {
- return $xmlrpcfuncname;
- }
- else
- {
- error_log('XML-RPC: could not create function '.$xmlrpcfuncname.' to wrap remote method '.$methodname);
- return false;
- }
- }
- else
- {
- $results['function'] = $xmlrpcfuncname;
- return $results;
- }
- }
- }
- }
- /**
- * Similar to wrap_xmlrpc_method, but will generate a php class that wraps
- * all xmlrpc methods exposed by the remote server as own methods.
- * For more details see wrap_xmlrpc_method.
- * @param xmlrpc_client $client the client obj all set to query the desired server
- * @param array $extra_options list of options for wrapped code
- * @return mixed false on error, the name of the created class if all ok or an array with code, class name and comments (if the appropriatevoption is set in extra_options)
- */
- function wrap_xmlrpc_server($client, $extra_options=array())
- {
- $methodfilter = isset($extra_options['method_filter']) ? $extra_options['method_filter'] : '';
- //$signum = isset($extra_options['signum']) ? (int)$extra_options['signum'] : 0;
- $timeout = isset($extra_options['timeout']) ? (int)$extra_options['timeout'] : 0;
- $protocol = isset($extra_options['protocol']) ? $extra_options['protocol'] : '';
- $newclassname = isset($extra_options['new_class_name']) ? $extra_options['new_class_name'] : '';
- $encode_php_objects = isset($extra_options['encode_php_objs']) ? (bool)$extra_options['encode_php_objs'] : false;
- $decode_php_objects = isset($extra_options['decode_php_objs']) ? (bool)$extra_options['decode_php_objs'] : false;
- $verbatim_client_copy = isset($extra_options['simple_client_copy']) ? !($extra_options['simple_client_copy']) : true;
- $buildit = isset($extra_options['return_source']) ? !($extra_options['return_source']) : true;
- $prefix = isset($extra_options['prefix']) ? $extra_options['prefix'] : 'xmlrpc';
- $msgclass = $prefix.'msg';
- //$valclass = $prefix.'val';
- $decodefunc = 'php_'.$prefix.'_decode';
- $msg =& new $msgclass('system.listMethods');
- $response =& $client->send($msg, $timeout, $protocol);
- if($response->faultCode())
- {
- error_log('XML-RPC: could not retrieve method list from remote server');
- return false;
- }
- else
- {
- $mlist = $response->value();
- if ($client->return_type != 'phpvals')
- {
- $mlist = $decodefunc($mlist);
- }
- if(!is_array($mlist) || !count($mlist))
- {
- error_log('XML-RPC: could not retrieve meaningful method list from remote server');
- return false;
- }
- else
- {
- // pick a suitable name for the new function, avoiding collisions
- if($newclassname != '')
- {
- $xmlrpcclassname = $newclassname;
- }
- else
- {
- $xmlrpcclassname = $prefix.'_'.preg_replace(array('/\./', '/[^a-zA-Z0-9_\x7f-\xff]/'),
- array('_', ''), $client->server).'_client';
- }
- while($buildit && class_exists($xmlrpcclassname))
- {
- $xmlrpcclassname .= 'x';
- }
- /// @todo add function setdebug() to new class, to enable/disable debugging
- $source = "class $xmlrpcclassname\n{\nvar \$client;\n\n";
- $source .= "function $xmlrpcclassname()\n{\n";
- $source .= build_client_wrapper_code($client, $verbatim_client_copy, $prefix);
- $source .= "\$this->client =& \$client;\n}\n\n";
- $opts = array('simple_client_copy' => 2, 'return_source' => true,
- 'timeout' => $timeout, 'protocol' => $protocol,
- 'encode_php_objs' => $encode_php_objects, 'prefix' => $prefix,
- 'decode_php_objs' => $decode_php_objects
- );
- /// @todo build javadoc for class definition, too
- foreach($mlist as $mname)
- {
- if ($methodfilter == '' || preg_match($methodfilter, $mname))
- {
- $opts['new_function_name'] = preg_replace(array('/\./', '/[^a-zA-Z0-9_\x7f-\xff]/'),
- array('_', ''), $mname);
- $methodwrap = wrap_xmlrpc_method($client, $mname, $opts);
- if ($methodwrap)
- {
- if (!$buildit)
- {
- $source .= $methodwrap['docstring'];
- }
- $source .= $methodwrap['source']."\n";
- }
- else
- {
- error_log('XML-RPC: will not create class method to wrap remote method '.$mname);
- }
- }
- }
- $source .= "}\n";
- if ($buildit)
- {
- $allOK = 0;
- eval($source.'$allOK=1;');
- // alternative
- //$xmlrpcfuncname = create_function('$m', $innercode);
- if($allOK)
- {
- return $xmlrpcclassname;
- }
- else
- {
- error_log('XML-RPC: could not create class '.$xmlrpcclassname.' to wrap remote server '.$client->server);
- return false;
- }
- }
- else
- {
- return array('class' => $xmlrpcclassname, 'code' => $source, 'docstring' => '');
- }
- }
- }
- }
- /**
- * Given the necessary info, build php code that creates a new function to
- * invoke a remote xmlrpc method.
- * Take care that no full checking of input parameters is done to ensure that
- * valid php code is emitted.
- * Note: real spaghetti code follows...
- * @access private
- */
- function build_remote_method_wrapper_code($client, $methodname, $xmlrpcfuncname,
- $msig, $mdesc='', $timeout=0, $protocol='', $client_copy_mode=0, $prefix='xmlrpc',
- $decode_php_objects=false, $encode_php_objects=false, $decode_fault=false,
- $fault_response='')
- {
- $code = "function $xmlrpcfuncname (";
- if ($client_copy_mode < 2)
- {
- // client copy mode 0 or 1 == partial / full client copy in emitted code
- $innercode = build_client_wrapper_code($client, $client_copy_mode, $prefix);
- $innercode .= "\$client->setDebug(\$debug);\n";
- $this_ = '';
- }
- else
- {
- // client copy mode 2 == no client copy in emitted code
- $innercode = '';
- $this_ = 'this->';
- }
- $innercode .= "\$msg =& new {$prefix}msg('$methodname');\n";
- if ($mdesc != '')
- {
- // take care that PHP comment is not terminated unwillingly by method description
- $mdesc = "/**\n* ".str_replace('*/', '* /', $mdesc)."\n";
- }
- else
- {
- $mdesc = "/**\nFunction $xmlrpcfuncname\n";
- }
- // param parsing
- $plist = array();
- $pcount = count($msig);
- for($i = 1; $i < $pcount; $i++)
- {
- $plist[] = "\$p$i";
- $ptype = $msig[$i];
- if($ptype == 'i4' || $ptype == 'int' || $ptype == 'boolean' || $ptype == 'double' ||
- $ptype == 'string' || $ptype == 'dateTime.iso8601' || $ptype == 'base64' || $ptype == 'null')
- {
- // only build directly xmlrpcvals when type is known and scalar
- $innercode .= "\$p$i =& new {$prefix}val(\$p$i, '$ptype');\n";
- }
- else
- {
- if ($encode_php_objects)
- {
- $innercode .= "\$p$i =& php_{$prefix}_encode(\$p$i, array('encode_php_objs'));\n";
- }
- else
- {
- $innercode .= "\$p$i =& php_{$prefix}_encode(\$p$i);\n";
- }
- }
- $innercode .= "\$msg->addparam(\$p$i);\n";
- $mdesc .= '* @param '.xmlrpc_2_php_type($ptype)." \$p$i\n";
- }
- if ($client_copy_mode < 2)
- {
- $plist[] = '$debug=0';
- $mdesc .= "* @param int \$debug when 1 (or 2) will enable debugging of the underlying {$prefix} call (defaults to 0)\n";
- }
- $plist = implode(', ', $plist);
- $mdesc .= '* @return '.xmlrpc_2_php_type($msig[0])." (or an {$prefix}resp obj instance if call fails)\n*/\n";
- $innercode .= "\$res =& \${$this_}client->send(\$msg, $timeout, '$protocol');\n";
- if ($decode_fault)
- {
- if (is_string($fault_response) && ((strpos($fault_response, '%faultCode%') !== false) || (strpos($fault_response, '%faultString%') !== false)))
- {
- $respcode = "str_replace(array('%faultCode%', '%faultString%'), array(\$res->faultCode(), \$res->faultString()), '".str_replace("'", "''", $fault_response)."')";
- }
- else
- {
- $respcode = var_export($fault_response, true);
- }
- }
- else
- {
- $respcode = '$res';
- }
- if ($decode_php_objects)
- {
- $innercode .= "if (\$res->faultcode()) return $respcode; else return php_{$prefix}_decode(\$res->value(), array('decode_php_objs'));";
- }
- else
- {
- $innercode .= "if (\$res->faultcode()) return $respcode; else return php_{$prefix}_decode(\$res->value());";
- }
- $code = $code . $plist. ") {\n" . $innercode . "\n}\n";
- return array('source' => $code, 'docstring' => $mdesc);
- }
- /**
- * Given necessary info, generate php code that will rebuild a client object
- * Take care that no full checking of input parameters is done to ensure that
- * valid php code is emitted.
- * @access private
- */
- function build_client_wrapper_code($client, $verbatim_client_copy, $prefix='xmlrpc')
- {
- $code = "\$client =& new {$prefix}_client('".str_replace("'", "\'", $client->path).
- "', '" . str_replace("'", "\'", $client->server) . "', $client->port);\n";
- // copy all client fields to the client that will be generated runtime
- // (this provides for future expansion or subclassing of client obj)
- if ($verbatim_client_copy)
- {
- foreach($client as $fld => $val)
- {
- if($fld != 'debug' && $fld != 'return_type')
- {
- $val = var_export($val, true);
- $code .= "\$client->$fld = $val;\n";
- }
- }
- }
- // only make sure that client always returns the correct data type
- $code .= "\$client->return_type = '{$prefix}vals';\n";
- //$code .= "\$client->setDebug(\$debug);\n";
- return $code;
- }
- ?>