mirror of
https://github.com/silverstripe/silverstripe-blog
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955 lines
35 KiB
PHP
955 lines
35 KiB
PHP
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<?php
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/**
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* PHP-XMLRPC "wrapper" functions
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* Generate stubs to transparently access xmlrpc methods as php functions and viceversa
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*
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* @version $Id: xmlrpc_wrappers.inc,v 1.13 2008/09/20 01:23:47 ggiunta Exp $
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* @author Gaetano Giunta
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* @copyright (C) 2006-2009 G. Giunta
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* @license code licensed under the BSD License: http://phpxmlrpc.sourceforge.net/license.txt
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*
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* @todo separate introspection from code generation for func-2-method wrapping
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* @todo use some better templating system for code generation?
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* @todo implement method wrapping with preservation of php objs in calls
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* @todo when wrapping methods without obj rebuilding, use return_type = 'phpvals' (faster)
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* @todo implement self-parsing of php code for PHP <= 4
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*/
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// requires: xmlrpc.inc
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/**
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* Given a string defining a php type or phpxmlrpc type (loosely defined: strings
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* accepted come from javadoc blocks), return corresponding phpxmlrpc type.
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* NB: for php 'resource' types returns empty string, since resources cannot be serialized;
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* for php class names returns 'struct', since php objects can be serialized as xmlrpc structs
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* for php arrays always return array, even though arrays sometiles serialize as json structs
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* @param string $phptype
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* @return string
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*/
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function php_2_xmlrpc_type($phptype)
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{
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switch(strtolower($phptype))
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{
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case 'string':
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return $GLOBALS['xmlrpcString'];
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case 'integer':
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case $GLOBALS['xmlrpcInt']: // 'int'
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case $GLOBALS['xmlrpcI4']:
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return $GLOBALS['xmlrpcInt'];
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case 'double':
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return $GLOBALS['xmlrpcDouble'];
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case 'boolean':
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return $GLOBALS['xmlrpcBoolean'];
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case 'array':
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return $GLOBALS['xmlrpcArray'];
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case 'object':
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return $GLOBALS['xmlrpcStruct'];
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case $GLOBALS['xmlrpcBase64']:
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case $GLOBALS['xmlrpcStruct']:
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return strtolower($phptype);
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case 'resource':
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return '';
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default:
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if(class_exists($phptype))
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{
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return $GLOBALS['xmlrpcStruct'];
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}
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else
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{
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// unknown: might be any 'extended' xmlrpc type
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return $GLOBALS['xmlrpcValue'];
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}
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}
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}
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/**
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* Given a string defining a phpxmlrpc type return corresponding php type.
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* @param string $xmlrpctype
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* @return string
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*/
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function xmlrpc_2_php_type($xmlrpctype)
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{
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switch(strtolower($xmlrpctype))
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{
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case 'base64':
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case 'datetime.iso8601':
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case 'string':
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return $GLOBALS['xmlrpcString'];
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case 'int':
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case 'i4':
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return 'integer';
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case 'struct':
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case 'array':
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return 'array';
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case 'double':
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return 'float';
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case 'undefined':
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return 'mixed';
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case 'boolean':
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case 'null':
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default:
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// unknown: might be any xmlrpc type
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return strtolower($xmlrpctype);
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}
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}
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/**
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* Given a user-defined PHP function, create a PHP 'wrapper' function that can
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* be exposed as xmlrpc method from an xmlrpc_server object and called from remote
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* clients (as well as its corresponding signature info).
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*
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* Since php is a typeless language, to infer types of input and output parameters,
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* it relies on parsing the javadoc-style comment block associated with the given
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* function. Usage of xmlrpc native types (such as datetime.dateTime.iso8601 and base64)
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* in the @param tag is also allowed, if you need the php function to receive/send
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* data in that particular format (note that base64 encoding/decoding is transparently
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* carried out by the lib, while datetime vals are passed around as strings)
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*
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* Known limitations:
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* - requires PHP 5.0.3 +
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* - only works for user-defined functions, not for PHP internal functions
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* (reflection does not support retrieving number/type of params for those)
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* - functions returning php objects will generate special xmlrpc responses:
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* when the xmlrpc decoding of those responses is carried out by this same lib, using
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* the appropriate param in php_xmlrpc_decode, the php objects will be rebuilt.
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* In short: php objects can be serialized, too (except for their resource members),
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* using this function.
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* Other libs might choke on the very same xml that will be generated in this case
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* (i.e. it has a nonstandard attribute on struct element tags)
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* - usage of javadoc @param tags using param names in a different order from the
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* function prototype is not considered valid (to be fixed?)
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*
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* Note that since rel. 2.0RC3 the preferred method to have the server call 'standard'
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* php functions (ie. functions not expecting a single xmlrpcmsg obj as parameter)
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* is by making use of the functions_parameters_type class member.
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*
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* @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
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* @param string $newfuncname (optional) name for function to be created
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* @param array $extra_options (optional) array of options for conversion. valid values include:
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* bool return_source when true, php code w. function definition will be returned, not evaluated
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* bool encode_php_objs let php objects be sent to server using the 'improved' xmlrpc notation, so server can deserialize them as php objects
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* bool decode_php_objs --- WARNING !!! possible security hazard. only use it with trusted servers ---
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* bool suppress_warnings remove from produced xml any runtime warnings due to the php function being invoked
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* @return false on error, or an array containing the name of the new php function,
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* its signature and docs, to be used in the server dispatch map
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*
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* @todo decide how to deal with params passed by ref: bomb out or allow?
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* @todo finish using javadoc info to build method sig if all params are named but out of order
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* @todo add a check for params of 'resource' type
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* @todo add some trigger_errors / error_log when returning false?
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* @todo what to do when the PHP function returns NULL? we are currently returning an empty string value...
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* @todo add an option to suppress php warnings in invocation of user function, similar to server debug level 3?
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* @todo if $newfuncname is empty, we could use create_user_func instead of eval, as it is possibly faster
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* @todo add a verbatim_object_copy parameter to allow avoiding the same obj instance?
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*/
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function wrap_php_function($funcname, $newfuncname='', $extra_options=array())
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{
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$buildit = isset($extra_options['return_source']) ? !($extra_options['return_source']) : true;
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$prefix = isset($extra_options['prefix']) ? $extra_options['prefix'] : 'xmlrpc';
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$encode_php_objects = isset($extra_options['encode_php_objs']) ? (bool)$extra_options['encode_php_objs'] : false;
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$decode_php_objects = isset($extra_options['decode_php_objs']) ? (bool)$extra_options['decode_php_objs'] : false;
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$catch_warnings = isset($extra_options['suppress_warnings']) && $extra_options['suppress_warnings'] ? '@' : '';
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if(version_compare(phpversion(), '5.0.3') == -1)
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{
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// up to php 5.0.3 some useful reflection methods were missing
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error_log('XML-RPC: cannot not wrap php functions unless running php version bigger than 5.0.3');
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return false;
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}
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$exists = false;
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if (is_string($funcname) && strpos($funcname, '::') !== false)
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{
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$funcname = explode('::', $funcname);
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}
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if(is_array($funcname))
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{
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if(count($funcname) < 2 || (!is_string($funcname[0]) && !is_object($funcname[0])))
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{
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error_log('XML-RPC: syntax for function to be wrapped is wrong');
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return false;
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}
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if(is_string($funcname[0]))
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{
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$plainfuncname = implode('::', $funcname);
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}
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elseif(is_object($funcname[0]))
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{
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$plainfuncname = get_class($funcname[0]) . '->' . $funcname[1];
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}
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$exists = method_exists($funcname[0], $funcname[1]);
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if (!$exists && version_compare(phpversion(), '5.1') < 0)
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{
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// workaround for php 5.0: static class methods are not seen by method_exists
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$exists = is_callable( $funcname );
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}
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}
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else
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{
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$plainfuncname = $funcname;
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$exists = function_exists($funcname);
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}
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if(!$exists)
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{
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error_log('XML-RPC: function to be wrapped is not defined: '.$plainfuncname);
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return false;
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}
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else
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{
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// determine name of new php function
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if($newfuncname == '')
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{
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if(is_array($funcname))
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{
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if(is_string($funcname[0]))
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$xmlrpcfuncname = "{$prefix}_".implode('_', $funcname);
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else
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$xmlrpcfuncname = "{$prefix}_".get_class($funcname[0]) . '_' . $funcname[1];
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}
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else
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{
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$xmlrpcfuncname = "{$prefix}_$funcname";
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}
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}
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else
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{
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$xmlrpcfuncname = $newfuncname;
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}
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while($buildit && function_exists($xmlrpcfuncname))
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{
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$xmlrpcfuncname .= 'x';
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}
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// start to introspect PHP code
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if(is_array($funcname))
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{
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$func = new ReflectionMethod($funcname[0], $funcname[1]);
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if($func->isPrivate())
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{
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error_log('XML-RPC: method to be wrapped is private: '.$plainfuncname);
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return false;
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}
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if($func->isProtected())
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{
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error_log('XML-RPC: method to be wrapped is protected: '.$plainfuncname);
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return false;
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}
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if($func->isConstructor())
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{
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error_log('XML-RPC: method to be wrapped is the constructor: '.$plainfuncname);
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return false;
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}
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// php 503 always says isdestructor = true...
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if( version_compare(phpversion(), '5.0.3') != 0 && $func->isDestructor())
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{
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error_log('XML-RPC: method to be wrapped is the destructor: '.$plainfuncname);
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return false;
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}
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if($func->isAbstract())
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{
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error_log('XML-RPC: method to be wrapped is abstract: '.$plainfuncname);
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return false;
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}
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/// @todo add more checks for static vs. nonstatic?
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}
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else
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{
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$func = new ReflectionFunction($funcname);
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}
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if($func->isInternal())
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{
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// Note: from PHP 5.1.0 onward, we will possibly be able to use invokeargs
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// instead of getparameters to fully reflect internal php functions ?
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error_log('XML-RPC: function to be wrapped is internal: '.$plainfuncname);
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return false;
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}
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// retrieve parameter names, types and description from javadoc comments
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// function description
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$desc = '';
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// type of return val: by default 'any'
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$returns = $GLOBALS['xmlrpcValue'];
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// desc of return val
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$returnsDocs = '';
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// type + name of function parameters
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$paramDocs = array();
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$docs = $func->getDocComment();
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if($docs != '')
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{
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$docs = explode("\n", $docs);
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$i = 0;
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foreach($docs as $doc)
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{
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$doc = trim($doc, " \r\t/*");
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if(strlen($doc) && strpos($doc, '@') !== 0 && !$i)
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{
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if($desc)
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{
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$desc .= "\n";
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}
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$desc .= $doc;
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}
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elseif(strpos($doc, '@param') === 0)
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{
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// syntax: @param type [$name] desc
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if(preg_match('/@param\s+(\S+)(\s+\$\S+)?\s+(.+)/', $doc, $matches))
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{
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if(strpos($matches[1], '|'))
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{
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//$paramDocs[$i]['type'] = explode('|', $matches[1]);
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$paramDocs[$i]['type'] = 'mixed';
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}
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else
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{
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$paramDocs[$i]['type'] = $matches[1];
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}
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$paramDocs[$i]['name'] = trim($matches[2]);
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$paramDocs[$i]['doc'] = $matches[3];
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}
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$i++;
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}
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elseif(strpos($doc, '@return') === 0)
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{
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// syntax: @return type desc
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//$returns = preg_split('/\s+/', $doc);
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if(preg_match('/@return\s+(\S+)\s+(.+)/', $doc, $matches))
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{
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$returns = php_2_xmlrpc_type($matches[1]);
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if(isset($matches[2]))
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{
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$returnsDocs = $matches[2];
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}
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}
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}
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}
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}
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// execute introspection of actual function prototype
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$params = array();
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$i = 0;
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foreach($func->getParameters() as $paramobj)
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{
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$params[$i] = array();
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$params[$i]['name'] = '$'.$paramobj->getName();
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$params[$i]['isoptional'] = $paramobj->isOptional();
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$i++;
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}
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// start building of PHP code to be eval'd
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$innercode = '';
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$i = 0;
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$parsvariations = array();
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$pars = array();
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$pnum = count($params);
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foreach($params as $param)
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{
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if (isset($paramDocs[$i]['name']) && $paramDocs[$i]['name'] && strtolower($paramDocs[$i]['name']) != strtolower($param['name']))
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{
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// param name from phpdoc info does not match param definition!
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$paramDocs[$i]['type'] = 'mixed';
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}
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if($param['isoptional'])
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{
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|
// 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;
|
||
|
|
}
|
||
|
|
?>
|