home *** CD-ROM | disk | FTP | other *** search
- <?php
- /**
- * This file contains the code for the SOAP message parser.
- *
- * PHP versions 4 and 5
- *
- * LICENSE: This source file is subject to version 2.02 of the PHP license,
- * that is bundled with this package in the file LICENSE, and is available at
- * through the world-wide-web at http://www.php.net/license/2_02.txt. If you
- * did not receive a copy of the PHP license and are unable to obtain it
- * through the world-wide-web, please send a note to license@php.net so we can
- * mail you a copy immediately.
- *
- * @category Web Services
- * @package SOAP
- * @author Dietrich Ayala <dietrich@ganx4.com> Original Author
- * @author Shane Caraveo <Shane@Caraveo.com> Port to PEAR and more
- * @author Chuck Hagenbuch <chuck@horde.org> Maintenance
- * @author Jan Schneider <jan@horde.org> Maintenance
- * @copyright 2003-2005 The PHP Group
- * @license http://www.php.net/license/2_02.txt PHP License 2.02
- * @link http://pear.php.net/package/SOAP
- */
-
- require_once 'SOAP/Base.php';
- require_once 'SOAP/Value.php';
-
- /**
- * SOAP Parser
- *
- * This class is used by SOAP::Message and SOAP::Server to parse soap
- * packets. Originally based on SOAPx4 by Dietrich Ayala
- * http://dietrich.ganx4.com/soapx4
- *
- * @access public
- * @package SOAP
- * @author Shane Caraveo <shane@php.net> Conversion to PEAR and updates
- * @author Dietrich Ayala <dietrich@ganx4.com> Original Author
- */
- class SOAP_Parser extends SOAP_Base
- {
- var $status = '';
- var $position = 0;
- var $depth = 0;
- var $default_namespace = '';
- var $message = array();
- var $depth_array = array();
- var $parent = 0;
- var $root_struct_name = array();
- var $header_struct_name = array();
- var $curent_root_struct_name = '';
- var $root_struct = array();
- var $header_struct = array();
- var $curent_root_struct = 0;
- var $references = array();
- var $need_references = array();
-
- /**
- * Used to handle non-root elements before root body element.
- *
- * @var integer
- */
- var $bodyDepth;
-
- /**
- * Constructor.
- *
- * @param string $xml XML content.
- * @param string $encoding Character set encoding, defaults to 'UTF-8'.
- * @param array $attachments List of attachments.
- */
- function SOAP_Parser($xml, $encoding = SOAP_DEFAULT_ENCODING,
- $attachments = null)
- {
- parent::SOAP_Base('Parser');
- $this->_setSchemaVersion(SOAP_XML_SCHEMA_VERSION);
-
- $this->attachments = $attachments;
-
- // Check the XML tag for encoding.
- if (preg_match('/<\?xml[^>]+encoding\s*?=\s*?(\'([^\']*)\'|"([^"]*)")[^>]*?[\?]>/', $xml, $m)) {
- $encoding = strtoupper($m[2] ? $m[2] : $m[3]);
- }
-
- // Determine where in the message we are (envelope, header, body,
- // method). Check whether content has been read.
- if (!empty($xml)) {
- // Prepare the XML parser.
- $parser = xml_parser_create($encoding);
- xml_parser_set_option($parser, XML_OPTION_CASE_FOLDING, 0);
- xml_set_object($parser, $this);
- xml_set_element_handler($parser, '_startElement', '_endElement');
- xml_set_character_data_handler($parser, '_characterData');
-
- // Some lame SOAP implementations add nul bytes at the end of the
- // SOAP stream, and expat chokes on that.
- if ($xml[strlen($xml) - 1] == 0) {
- $xml = trim($xml);
- }
-
- // Parse the XML file.
- if (!xml_parse($parser, $xml, true)) {
- $err = sprintf('XML error on line %d col %d byte %d %s',
- xml_get_current_line_number($parser),
- xml_get_current_column_number($parser),
- xml_get_current_byte_index($parser),
- xml_error_string(xml_get_error_code($parser)));
- $this->_raiseSoapFault($err, htmlspecialchars($xml));
- }
- xml_parser_free($parser);
- }
- }
-
- /**
- * Returns an array of responses.
- *
- * After parsing a SOAP message, use this to get the response.
- *
- * @return array
- */
- function getResponse()
- {
- if (!empty($this->root_struct[0])) {
- return $this->_buildResponse($this->root_struct[0]);
- } else {
- return $this->_raiseSoapFault('Cannot build response');
- }
- }
-
- /**
- * Returns an array of header responses.
- *
- * After parsing a SOAP message, use this to get the response.
- *
- * @return array
- */
- function getHeaders()
- {
- if (!empty($this->header_struct[0])) {
- return $this->_buildResponse($this->header_struct[0]);
- } else {
- // We don't fault if there are no headers; that can be handled by
- // the application if necessary.
- return null;
- }
- }
-
- /**
- * Recurses to build a multi dimensional array.
- *
- * @see _buildResponse()
- */
- function _domulti($d, &$ar, &$r, &$v, $ad = 0)
- {
- if ($d) {
- $this->_domulti($d - 1, $ar, $r[$ar[$ad]], $v, $ad + 1);
- } else {
- $r = $v;
- }
- }
-
- /**
- * Loops through the message, building response structures.
- *
- * @param integer $pos Position.
- *
- * @return SOAP_Value
- */
- function _buildResponse($pos)
- {
- $response = null;
-
- if (isset($this->message[$pos]['children'])) {
- $children = explode('|', $this->message[$pos]['children']);
- foreach ($children as $c => $child_pos) {
- if ($this->message[$child_pos]['type'] != null) {
- $response[] = $this->_buildResponse($child_pos);
- }
- }
- if (isset($this->message[$pos]['arraySize'])) {
- $ardepth = count($this->message[$pos]['arraySize']);
- if ($ardepth > 1) {
- $ar = array_pad(array(), $ardepth, 0);
- if (isset($this->message[$pos]['arrayOffset'])) {
- for ($i = 0; $i < $ardepth; $i++) {
- $ar[$i] += $this->message[$pos]['arrayOffset'][$i];
- }
- }
- $elc = count($response);
- for ($i = 0; $i < $elc; $i++) {
- // Recurse to build a multi dimensional array.
- $this->_domulti($ardepth, $ar, $newresp, $response[$i]);
-
- // Increment our array pointers.
- $ad = $ardepth - 1;
- $ar[$ad]++;
- while ($ad > 0 &&
- $ar[$ad] >= $this->message[$pos]['arraySize'][$ad]) {
- $ar[$ad] = 0;
- $ad--;
- $ar[$ad]++;
- }
- }
- $response = $newresp;
- } elseif (isset($this->message[$pos]['arrayOffset']) &&
- $this->message[$pos]['arrayOffset'][0] > 0) {
- // Check for padding.
- $pad = $this->message[$pos]['arrayOffset'][0] + count($response) * -1;
- $response = array_pad($response, $pad, null);
- }
- }
- }
-
- // Build attributes.
- $attrs = array();
- foreach ($this->message[$pos]['attrs'] as $atn => $atv) {
- if (!strstr($atn, 'xmlns') && !strpos($atn, ':')) {
- $attrs[$atn] = $atv;
- }
- }
-
- // Add current node's value.
- if ($response) {
- $nqn = new QName($this->message[$pos]['name'],
- $this->message[$pos]['namespace']);
- $tqn = new QName($this->message[$pos]['type'],
- $this->message[$pos]['type_namespace']);
- $response = new SOAP_Value($nqn->fqn(),
- $tqn->fqn(),
- $response,
- $attrs);
- if (isset($this->message[$pos]['arrayType'])) {
- $response->arrayType = $this->message[$pos]['arrayType'];
- }
- } else {
- $nqn = new QName($this->message[$pos]['name'],
- $this->message[$pos]['namespace']);
- $tqn = new QName($this->message[$pos]['type'],
- $this->message[$pos]['type_namespace']);
- // Check if value is an empty array
- if ($tqn->name == 'Array') {
- $response =& new SOAP_Value($nqn->fqn(), $tqn->fqn(),
- array(), $attrs);
- } else {
- $response = new SOAP_Value($nqn->fqn(),
- $tqn->fqn(),
- $this->message[$pos]['cdata'],
- $attrs);
- }
- }
-
- // Handle header attribute that we need.
- if (array_key_exists('actor', $this->message[$pos])) {
- $response->actor = $this->message[$pos]['actor'];
- }
- if (array_key_exists('mustUnderstand', $this->message[$pos])) {
- $response->mustunderstand = $this->message[$pos]['mustUnderstand'];
- }
- return $response;
- }
-
- /**
- * Start element handler used with the XML parser.
- */
- function _startElement($parser, $name, $attrs)
- {
- // Position in a total number of elements, starting from 0.
- // Update class level position.
- $pos = $this->position++;
-
- // And set mine.
- $this->message[$pos] = array(
- 'type' => '',
- 'type_namespace' => '',
- 'cdata' => '',
- 'pos' => $pos,
- 'id' => '');
-
- // Parent/child/depth determinations.
-
- // depth = How many levels removed from root?
- // Set mine as current global depth and increment global depth value.
- $this->message[$pos]['depth'] = $this->depth++;
-
- // Else add self as child to whoever the current parent is.
- if ($pos != 0) {
- if (isset($this->message[$this->parent]['children'])) {
- $this->message[$this->parent]['children'] .= '|' . $pos;
- } else {
- $this->message[$this->parent]['children'] = $pos;
- }
- }
-
- // Set my parent.
- $this->message[$pos]['parent'] = $this->parent;
-
- // Set self as current value for this depth.
- $this->depth_array[$this->depth] = $pos;
- // Set self as current parent.
- $this->parent = $pos;
- $qname = new QName($name);
- // Set status.
- if (strcasecmp('envelope', $qname->name) == 0) {
- $this->status = 'envelope';
- } elseif (strcasecmp('header', $qname->name) == 0) {
- $this->status = 'header';
- $this->header_struct_name[] = $this->curent_root_struct_name = $qname->name;
- $this->header_struct[] = $this->curent_root_struct = $pos;
- $this->message[$pos]['type'] = 'Struct';
- } elseif (strcasecmp('body', $qname->name) == 0) {
- $this->status = 'body';
- $this->bodyDepth = $this->depth;
-
- // Set method
- } elseif ($this->status == 'body') {
- // Is this element allowed to be a root?
- // TODO: this needs to be optimized, we loop through $attrs twice
- // now.
- $can_root = $this->depth == $this->bodyDepth + 1;
- if ($can_root) {
- foreach ($attrs as $key => $value) {
- if (stristr($key, ':root') && !$value) {
- $can_root = false;
- }
- }
- }
-
- if ($can_root) {
- $this->status = 'method';
- $this->root_struct_name[] = $this->curent_root_struct_name = $qname->name;
- $this->root_struct[] = $this->curent_root_struct = $pos;
- $this->message[$pos]['type'] = 'Struct';
- }
- }
-
- // Set my status.
- $this->message[$pos]['status'] = $this->status;
-
- // Set name.
- $this->message[$pos]['name'] = htmlspecialchars($qname->name);
-
- // Set attributes.
- $this->message[$pos]['attrs'] = $attrs;
-
- // Loop through attributes, logging ns and type declarations.
- foreach ($attrs as $key => $value) {
- // If ns declarations, add to class level array of valid
- // namespaces.
- $kqn = new QName($key);
- if ($kqn->ns == 'xmlns') {
- $prefix = $kqn->name;
-
- if (in_array($value, $this->_XMLSchema)) {
- $this->_setSchemaVersion($value);
- }
-
- $this->_namespaces[$value] = $prefix;
-
- // Set method namespace.
- } elseif ($key == 'xmlns') {
- $qname->ns = $this->_getNamespacePrefix($value);
- $qname->namespace = $value;
- } elseif ($kqn->name == 'actor') {
- $this->message[$pos]['actor'] = $value;
- } elseif ($kqn->name == 'mustUnderstand') {
- $this->message[$pos]['mustUnderstand'] = $value;
-
- // If it's a type declaration, set type.
- } elseif ($kqn->name == 'type') {
- $vqn = new QName($value);
- $this->message[$pos]['type'] = $vqn->name;
- $this->message[$pos]['type_namespace'] = $this->_getNamespaceForPrefix($vqn->ns);
-
- // Should do something here with the namespace of specified
- // type?
-
- } elseif ($kqn->name == 'arrayType') {
- $vqn = new QName($value);
- $this->message[$pos]['type'] = 'Array';
- if (isset($vqn->arraySize)) {
- $this->message[$pos]['arraySize'] = $vqn->arraySize;
- }
- $this->message[$pos]['arrayType'] = $vqn->name;
-
- } elseif ($kqn->name == 'offset') {
- $this->message[$pos]['arrayOffset'] = split(',', substr($value, 1, strlen($value) - 2));
-
- } elseif ($kqn->name == 'id') {
- // Save id to reference array.
- $this->references[$value] = $pos;
- $this->message[$pos]['id'] = $value;
-
- } elseif ($kqn->name == 'href') {
- if ($value[0] == '#') {
- $ref = substr($value, 1);
- if (isset($this->references[$ref])) {
- // cdata, type, inval.
- $ref_pos = $this->references[$ref];
- $this->message[$pos]['children'] = &$this->message[$ref_pos]['children'];
- $this->message[$pos]['cdata'] = &$this->message[$ref_pos]['cdata'];
- $this->message[$pos]['type'] = &$this->message[$ref_pos]['type'];
- $this->message[$pos]['arraySize'] = &$this->message[$ref_pos]['arraySize'];
- $this->message[$pos]['arrayType'] = &$this->message[$ref_pos]['arrayType'];
- } else {
- // Reverse reference, store in 'need reference'.
- if (!isset($this->need_references[$ref])) {
- $this->need_references[$ref] = array();
- }
- $this->need_references[$ref][] = $pos;
- }
- } elseif (isset($this->attachments[$value])) {
- $this->message[$pos]['cdata'] = $this->attachments[$value];
- }
- }
- }
- // See if namespace is defined in tag.
- if (isset($attrs['xmlns:' . $qname->ns])) {
- $namespace = $attrs['xmlns:' . $qname->ns];
- } elseif ($qname->ns && !$qname->namespace) {
- $namespace = $this->_getNamespaceForPrefix($qname->ns);
- } else {
- // Get namespace.
- $namespace = $qname->namespace ? $qname->namespace : $this->default_namespace;
- }
- $this->message[$pos]['namespace'] = $namespace;
- $this->default_namespace = $namespace;
- }
-
- /**
- * End element handler used with the XML parser.
- */
- function _endElement($parser, $name)
- {
- // Position of current element is equal to the last value left in
- // depth_array for my depth.
- $pos = $this->depth_array[$this->depth];
-
- // Bring depth down a notch.
- $this->depth--;
- $qname = new QName($name);
-
- // Get type if not explicitly declared in an xsi:type attribute.
- // TODO: check on integrating WSDL validation here.
- if ($this->message[$pos]['type'] == '') {
- if (isset($this->message[$pos]['children'])) {
- /* this is slow, need to look at some faster method
- $children = explode('|', $this->message[$pos]['children']);
- if (count($children) > 2 &&
- $this->message[$children[1]]['name'] == $this->message[$children[2]]['name']) {
- $this->message[$pos]['type'] = 'Array';
- } else {
- $this->message[$pos]['type'] = 'Struct';
- }*/
- $this->message[$pos]['type'] = 'Struct';
- } else {
- $parent = $this->message[$pos]['parent'];
- if ($this->message[$parent]['type'] == 'Array' &&
- isset($this->message[$parent]['arrayType'])) {
- $this->message[$pos]['type'] = $this->message[$parent]['arrayType'];
- } else {
- $this->message[$pos]['type'] = 'string';
- }
- }
- }
-
- // If tag we are currently closing is the method wrapper.
- if ($pos == $this->curent_root_struct) {
- $this->status = 'body';
- } elseif ($qname->name == 'Body' || $qname->name == 'Header') {
- $this->status = 'envelope';
- }
-
- // Set parent back to my parent.
- $this->parent = $this->message[$pos]['parent'];
-
- // Handle any reverse references now.
- $idref = $this->message[$pos]['id'];
-
- if ($idref != '' && isset($this->need_references[$idref])) {
- foreach ($this->need_references[$idref] as $ref_pos) {
- // XXX is this stuff there already?
- $this->message[$ref_pos]['children'] = &$this->message[$pos]['children'];
- $this->message[$ref_pos]['cdata'] = &$this->message[$pos]['cdata'];
- $this->message[$ref_pos]['type'] = &$this->message[$pos]['type'];
- $this->message[$ref_pos]['arraySize'] = &$this->message[$pos]['arraySize'];
- $this->message[$ref_pos]['arrayType'] = &$this->message[$pos]['arrayType'];
- }
- }
- }
-
- /**
- * Element content handler used with the XML parser.
- */
- function _characterData($parser, $data)
- {
- $pos = $this->depth_array[$this->depth];
- if (isset($this->message[$pos]['cdata'])) {
- $this->message[$pos]['cdata'] .= $data;
- } else {
- $this->message[$pos]['cdata'] = $data;
- }
- }
-
- }
-