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Edit File : class-IXR-message.php \| Size : 8.21 KB
<?php /** * IXR_MESSAGE * * @package IXR * @since 1.5.0 * / class IXR_Message { var $message = false; var $messageType = false; // methodCall / methodResponse / fault var $faultCode = false; var $faultString = false; var $methodName = ''; var $params = array(); // Current variable stacks var $_arraystructs = array(); // The stack used to keep track of the current array/struct var $_arraystructstypes = array(); // Stack keeping track of if things are structs or array var $_currentStructName = array(); // A stack as well var $_param; var $_value; var $_currentTag; var $_currentTagContents; // The XML parser var $_parser; /* * PHP5 constructor. / function __construct( $message ) { $this->message =& $message; } /* * PHP4 constructor. / public function IXR_Message( $message ) { self::__construct( $message ); } function parse() { if ( ! function_exists( 'xml_parser_create' ) ) { trigger_error( __( "PHP's XML extension is not available. Please contact your hosting provider to enable PHP's XML extension." ) ); return false; } // first remove the XML declaration // merged from WP #10698 - this method avoids the RAM usage of preg_replace on very large messages $header = preg_replace( '/<\?xml.?\?'.'>/s', '', substr( $this->message, 0, 100 ), 1 ); $this->message = trim( substr_replace( $this->message, $header, 0, 100 ) ); if ( '' == $this->message ) { return false; } // Then remove the DOCTYPE $header = preg_replace( '/^<!DOCTYPE[^>]+>/i', '', substr( $this->message, 0, 200 ), 1 ); $this->message = trim( substr_replace( $this->message, $header, 0, 200 ) ); if ( '' == $this->message ) { return false; } // Check that the root tag is valid $root_tag = substr( $this->message, 0, strcspn( substr( $this->message, 0, 20 ), "> \t\r\n" ) ); if ( '<!DOCTYPE' === strtoupper( $root_tag ) ) { return false; } if ( ! in_array( $root_tag, array( '<methodCall', '<methodResponse', '<fault' ) ) ) { return false; } // Bail if there are too many elements to parse $element_limit = 30000; if ( function_exists( 'apply_filters' ) ) { /* * Filters the number of elements to parse in an XML-RPC response. * * @since 4.0.0 * * @param int $element_limit Default elements limit. / $element_limit = apply_filters( 'xmlrpc_element_limit', $element_limit ); } if ( $element_limit && 2 $element_limit < substr_count( $this->message, '<' ) ) { return false; } $this->_parser = xml_parser_create(); // Set XML parser to take the case of tags in to account xml_parser_set_option($this->_parser, XML_OPTION_CASE_FOLDING, false); // Set XML parser callback functions xml_set_element_handler($this->_parser, array($this, 'tag_open'), array($this, 'tag_close')); xml_set_character_data_handler($this->_parser, array($this, 'cdata')); // 256Kb, parse in chunks to avoid the RAM usage on very large messages $chunk_size = 262144; /** * Filters the chunk size that can be used to parse an XML-RPC response message. * * @since 4.4.0 * * @param int $chunk_size Chunk size to parse in bytes. / $chunk_size = apply_filters( 'xmlrpc_chunk_parsing_size', $chunk_size ); $final = false; do { if (strlen($this->message) <= $chunk_size) { $final = true; } $part = substr($this->message, 0, $chunk_size); $this->message = substr($this->message, $chunk_size); if (!xml_parse($this->_parser, $part, $final)) { if (PHP_VERSION_ID < 80000) { // xml_parser_free() has no effect as of PHP 8.0. xml_parser_free($this->_parser); } unset($this->_parser); return false; } if ($final) { break; } } while (true); if (PHP_VERSION_ID < 80000) { // xml_parser_free() has no effect as of PHP 8.0. xml_parser_free($this->_parser); } unset($this->_parser); // Grab the error messages, if any if ($this->messageType == 'fault') { $this->faultCode = $this->params[0]['faultCode']; $this->faultString = $this->params[0]['faultString']; } return true; } function tag_open($parser, $tag, $attr) { $this->_currentTagContents = ''; $this->_currentTag = $tag; switch($tag) { case 'methodCall': case 'methodResponse': case 'fault': $this->messageType = $tag; break; / Deal with stacks of arrays and structs / case 'data': // data is to all intents and puposes more interesting than array $this->_arraystructstypes[] = 'array'; $this->_arraystructs[] = array(); break; case 'struct': $this->_arraystructstypes[] = 'struct'; $this->_arraystructs[] = array(); break; } } function cdata($parser, $cdata) { $this->_currentTagContents .= $cdata; } function tag_close($parser, $tag) { $valueFlag = false; switch($tag) { case 'int': case 'i4': $value = (int)trim($this->_currentTagContents); $valueFlag = true; break; case 'double': $value = (float)trim($this->_currentTagContents); $valueFlag = true; break; case 'string': $value = (string)trim($this->_currentTagContents); $valueFlag = true; break; case 'dateTime.iso8601': $value = new IXR_Date(trim($this->_currentTagContents)); $valueFlag = true; break; case 'value': // "If no type is indicated, the type is string." if (trim($this->_currentTagContents) != '') { $value = (string)$this->_currentTagContents; $valueFlag = true; } break; case 'boolean': $value = (bool)trim($this->_currentTagContents); $valueFlag = true; break; case 'base64': $value = base64_decode($this->_currentTagContents); $valueFlag = true; break; / Deal with stacks of arrays and structs */ case 'data': case 'struct': $value = array_pop($this->_arraystructs); array_pop($this->_arraystructstypes); $valueFlag = true; break; case 'member': array_pop($this->_currentStructName); break; case 'name': $this->_currentStructName[] = trim($this->_currentTagContents); break; case 'methodName': $this->methodName = trim($this->_currentTagContents); break; } if ($valueFlag) { if (count($this->_arraystructs) > 0) { // Add value to struct or array if ($this->_arraystructstypes[count($this->_arraystructstypes)-1] == 'struct') { // Add to struct $this->_arraystructs[count($this->_arraystructs)-1][$this->_currentStructName[count($this->_currentStructName)-1]] = $value; } else { // Add to array $this->_arraystructs[count($this->_arraystructs)-1][] = $value; } } else { // Just add as a parameter $this->params[] = $value; } } $this->_currentTagContents = ''; } } Back

Edit File : class-IXR-message.php | Size : 8.21 KB

<?php

/**
 * IXR_MESSAGE
 *
 * @package IXR
 * @since 1.5.0
 *
 */
class IXR_Message
{
    var $message     = false;
    var $messageType = false;  // methodCall / methodResponse / fault
    var $faultCode   = false;
    var $faultString = false;
    var $methodName  = '';
    var $params      = array();

// Current variable stacks
    var $_arraystructs = array();   // The stack used to keep track of the current array/struct
    var $_arraystructstypes = array(); // Stack keeping track of if things are structs or array
    var $_currentStructName = array();  // A stack as well
    var $_param;
    var $_value;
    var $_currentTag;
    var $_currentTagContents;
    // The XML parser
    var $_parser;

/**
	 * PHP5 constructor.
	 */
    function __construct( $message )
    {
        $this->message =& $message;
    }

/**
	 * PHP4 constructor.
	 */
	public function IXR_Message( $message ) {
		self::__construct( $message );
	}

function parse()
    {
        if ( ! function_exists( 'xml_parser_create' ) ) {
            trigger_error( __( "PHP's XML extension is not available. Please contact your hosting provider to enable PHP's XML extension." ) );
            return false;
        }

// first remove the XML declaration
        // merged from WP #10698 - this method avoids the RAM usage of preg_replace on very large messages
        $header = preg_replace( '/<\?xml.*?\?'.'>/s', '', substr( $this->message, 0, 100 ), 1 );
        $this->message = trim( substr_replace( $this->message, $header, 0, 100 ) );
        if ( '' == $this->message ) {
            return false;
        }

// Then remove the DOCTYPE
        $header = preg_replace( '/^<!DOCTYPE[^>]*+>/i', '', substr( $this->message, 0, 200 ), 1 );
        $this->message = trim( substr_replace( $this->message, $header, 0, 200 ) );
        if ( '' == $this->message ) {
            return false;
        }

// Check that the root tag is valid
        $root_tag = substr( $this->message, 0, strcspn( substr( $this->message, 0, 20 ), "> \t\r\n" ) );
        if ( '<!DOCTYPE' === strtoupper( $root_tag ) ) {
            return false;
        }
        if ( ! in_array( $root_tag, array( '<methodCall', '<methodResponse', '<fault' ) ) ) {
            return false;
        }

// Bail if there are too many elements to parse
        $element_limit = 30000;
        if ( function_exists( 'apply_filters' ) ) {
            /**
             * Filters the number of elements to parse in an XML-RPC response.
             *
             * @since 4.0.0
             *
             * @param int $element_limit Default elements limit.
             */
            $element_limit = apply_filters( 'xmlrpc_element_limit', $element_limit );
        }
        if ( $element_limit && 2 * $element_limit < substr_count( $this->message, '<' ) ) {
            return false;
        }

$this->_parser = xml_parser_create();
        // Set XML parser to take the case of tags in to account
        xml_parser_set_option($this->_parser, XML_OPTION_CASE_FOLDING, false);
        // Set XML parser callback functions
        xml_set_element_handler($this->_parser, array($this, 'tag_open'), array($this, 'tag_close'));
        xml_set_character_data_handler($this->_parser, array($this, 'cdata'));

// 256Kb, parse in chunks to avoid the RAM usage on very large messages
        $chunk_size = 262144;

/**
         * Filters the chunk size that can be used to parse an XML-RPC response message.
         *
         * @since 4.4.0
         *
         * @param int $chunk_size Chunk size to parse in bytes.
         */
        $chunk_size = apply_filters( 'xmlrpc_chunk_parsing_size', $chunk_size );

$final = false;

do {
            if (strlen($this->message) <= $chunk_size) {
                $final = true;
            }

$part = substr($this->message, 0, $chunk_size);
            $this->message = substr($this->message, $chunk_size);

if (!xml_parse($this->_parser, $part, $final)) {
                if (PHP_VERSION_ID < 80000) { // xml_parser_free() has no effect as of PHP 8.0.
                    xml_parser_free($this->_parser);
                }

unset($this->_parser);
                return false;
            }

if ($final) {
                break;
            }
        } while (true);

if (PHP_VERSION_ID < 80000) { // xml_parser_free() has no effect as of PHP 8.0.
            xml_parser_free($this->_parser);
        }

unset($this->_parser);

// Grab the error messages, if any
        if ($this->messageType == 'fault') {
            $this->faultCode = $this->params[0]['faultCode'];
            $this->faultString = $this->params[0]['faultString'];
        }
        return true;
    }

function tag_open($parser, $tag, $attr)
    {
        $this->_currentTagContents = '';
        $this->_currentTag = $tag;
        switch($tag) {
            case 'methodCall':
            case 'methodResponse':
            case 'fault':
                $this->messageType = $tag;
                break;
                /* Deal with stacks of arrays and structs */
            case 'data':    // data is to all intents and puposes more interesting than array
                $this->_arraystructstypes[] = 'array';
                $this->_arraystructs[] = array();
                break;
            case 'struct':
                $this->_arraystructstypes[] = 'struct';
                $this->_arraystructs[] = array();
                break;
        }
    }

function cdata($parser, $cdata)
    {
        $this->_currentTagContents .= $cdata;
    }

function tag_close($parser, $tag)
    {
        $valueFlag = false;
        switch($tag) {
            case 'int':
            case 'i4':
                $value = (int)trim($this->_currentTagContents);
                $valueFlag = true;
                break;
            case 'double':
                $value = (float)trim($this->_currentTagContents);
                $valueFlag = true;
                break;
            case 'string':
                $value = (string)trim($this->_currentTagContents);
                $valueFlag = true;
                break;
            case 'dateTime.iso8601':
                $value = new IXR_Date(trim($this->_currentTagContents));
                $valueFlag = true;
                break;
            case 'value':
                // "If no type is indicated, the type is string."
                if (trim($this->_currentTagContents) != '') {
                    $value = (string)$this->_currentTagContents;
                    $valueFlag = true;
                }
                break;
            case 'boolean':
                $value = (bool)trim($this->_currentTagContents);
                $valueFlag = true;
                break;
            case 'base64':
                $value = base64_decode($this->_currentTagContents);
                $valueFlag = true;
                break;
                /* Deal with stacks of arrays and structs */
            case 'data':
            case 'struct':
                $value = array_pop($this->_arraystructs);
                array_pop($this->_arraystructstypes);
                $valueFlag = true;
                break;
            case 'member':
                array_pop($this->_currentStructName);
                break;
            case 'name':
                $this->_currentStructName[] = trim($this->_currentTagContents);
                break;
            case 'methodName':
                $this->methodName = trim($this->_currentTagContents);
                break;
        }

if ($valueFlag) {
            if (count($this->_arraystructs) > 0) {
                // Add value to struct or array
                if ($this->_arraystructstypes[count($this->_arraystructstypes)-1] == 'struct') {
                    // Add to struct
                    $this->_arraystructs[count($this->_arraystructs)-1][$this->_currentStructName[count($this->_currentStructName)-1]] = $value;
                } else {
                    // Add to array
                    $this->_arraystructs[count($this->_arraystructs)-1][] = $value;
                }
            } else {
                // Just add as a parameter
                $this->params[] = $value;
            }
        }
        $this->_currentTagContents = '';
    }
}

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