| 1 | <?php |
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| 2 | /** |
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| 3 | * This file contains the code for the SOAP message parser. |
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| 4 | * |
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| 5 | * PHP versions 4 and 5 |
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| 6 | * |
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| 7 | * LICENSE: This source file is subject to version 2.02 of the PHP license, |
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| 8 | * that is bundled with this package in the file LICENSE, and is available at |
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| 9 | * through the world-wide-web at http://www.php.net/license/2_02.txt. If you |
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| 10 | * did not receive a copy of the PHP license and are unable to obtain it |
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| 11 | * through the world-wide-web, please send a note to [email protected] so we can |
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| 12 | * mail you a copy immediately. |
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| 13 | * |
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| 14 | * @category Web Services |
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| 15 | * @package SOAP |
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| 16 | * @author Dietrich Ayala <[email protected]> Original Author |
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| 17 | * @author Shane Caraveo <[email protected]> Port to PEAR and more |
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| 18 | * @author Chuck Hagenbuch <[email protected]> Maintenance |
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| 19 | * @author Jan Schneider <[email protected]> Maintenance |
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| 20 | * @copyright 2003-2005 The PHP Group |
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| 21 | * @license http://www.php.net/license/2_02.txt PHP License 2.02 |
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| 22 | * @link http://pear.php.net/package/SOAP |
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| 23 | */ |
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| 24 | |
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| 25 | require_once 'SOAP/Base.php'; |
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| 26 | require_once 'SOAP/Value.php'; |
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| 27 | |
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| 28 | /** |
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| 29 | * SOAP Parser |
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| 30 | * |
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| 31 | * This class is used by SOAP::Message and SOAP::Server to parse soap |
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| 32 | * packets. Originally based on SOAPx4 by Dietrich Ayala |
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| 33 | * http://dietrich.ganx4.com/soapx4 |
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| 34 | * |
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| 35 | * @access public |
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| 36 | * @package SOAP |
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| 37 | * @author Shane Caraveo <[email protected]> Conversion to PEAR and updates |
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| 38 | * @author Dietrich Ayala <[email protected]> Original Author |
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| 39 | */ |
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| 40 | class SOAP_Parser extends SOAP_Base |
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| 41 | { |
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| 42 | var $status = ''; |
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| 43 | var $position = 0; |
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| 44 | var $depth = 0; |
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| 45 | var $default_namespace = ''; |
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| 46 | var $message = array(); |
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| 47 | var $depth_array = array(); |
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| 48 | var $parent = 0; |
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| 49 | var $root_struct_name = array(); |
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| 50 | var $header_struct_name = array(); |
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| 51 | var $curent_root_struct_name = ''; |
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| 52 | var $root_struct = array(); |
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| 53 | var $header_struct = array(); |
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| 54 | var $curent_root_struct = 0; |
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| 55 | var $references = array(); |
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| 56 | var $need_references = array(); |
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| 57 | |
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| 58 | /** |
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| 59 | * Used to handle non-root elements before root body element. |
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| 60 | * |
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| 61 | * @var integer |
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| 62 | */ |
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| 63 | var $bodyDepth; |
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| 64 | |
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| 65 | /** |
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| 66 | * Constructor. |
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| 67 | * |
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| 68 | * @param string $xml XML content. |
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| 69 | * @param string $encoding Character set encoding, defaults to 'UTF-8'. |
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| 70 | * @param array $attachments List of attachments. |
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| 71 | */ |
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| 72 | function SOAP_Parser($xml, $encoding = SOAP_DEFAULT_ENCODING, |
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| 73 | $attachments = null) |
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| 74 | { |
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| 75 | parent::SOAP_Base('Parser'); |
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| 76 | $this->_setSchemaVersion(SOAP_XML_SCHEMA_VERSION); |
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| 77 | |
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| 78 | $this->attachments = $attachments; |
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| 79 | |
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| 80 | // Check the XML tag for encoding. |
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| 81 | if (preg_match('/<\?xml[^>]+encoding\s*?=\s*?(\'([^\']*)\'|"([^"]*)")[^>]*?[\?]>/', $xml, $m)) { |
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| 82 | $encoding = strtoupper($m[2] ? $m[2] : $m[3]); |
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| 83 | } |
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| 84 | |
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| 85 | // Determine where in the message we are (envelope, header, body, |
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| 86 | // method). Check whether content has been read. |
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| 87 | if (!empty($xml)) { |
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| 88 | // Prepare the XML parser. |
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| 89 | $parser = xml_parser_create($encoding); |
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| 90 | xml_parser_set_option($parser, XML_OPTION_CASE_FOLDING, 0); |
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| 91 | xml_set_object($parser, $this); |
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| 92 | xml_set_element_handler($parser, '_startElement', '_endElement'); |
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| 93 | xml_set_character_data_handler($parser, '_characterData'); |
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| 94 | |
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| 95 | // Some lame SOAP implementations add nul bytes at the end of the |
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| 96 | // SOAP stream, and expat chokes on that. |
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| 97 | if ($xml[strlen($xml) - 1] == 0) { |
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| 98 | $xml = trim($xml); |
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| 99 | } |
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| 100 | |
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| 101 | // Parse the XML file. |
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| 102 | if (!xml_parse($parser, $xml, true)) { |
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| 103 | $err = sprintf('XML error on line %d col %d byte %d %s', |
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| 104 | xml_get_current_line_number($parser), |
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| 105 | xml_get_current_column_number($parser), |
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| 106 | xml_get_current_byte_index($parser), |
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| 107 | xml_error_string(xml_get_error_code($parser))); |
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| 108 | $this->_raiseSoapFault($err, htmlspecialchars($xml)); |
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| 109 | } |
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| 110 | xml_parser_free($parser); |
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| 111 | } |
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| 112 | } |
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| 113 | |
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| 114 | /** |
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| 115 | * Returns an array of responses. |
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| 116 | * |
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| 117 | * After parsing a SOAP message, use this to get the response. |
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| 118 | * |
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| 119 | * @return array |
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| 120 | */ |
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| 121 | function getResponse() |
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| 122 | { |
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| 123 | if (!empty($this->root_struct[0])) { |
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| 124 | return $this->_buildResponse($this->root_struct[0]); |
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| 125 | } else { |
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| 126 | return $this->_raiseSoapFault('Cannot build response'); |
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| 127 | } |
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| 128 | } |
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| 129 | |
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| 130 | /** |
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| 131 | * Returns an array of header responses. |
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| 132 | * |
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| 133 | * After parsing a SOAP message, use this to get the response. |
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| 134 | * |
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| 135 | * @return array |
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| 136 | */ |
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| 137 | function getHeaders() |
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| 138 | { |
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| 139 | if (!empty($this->header_struct[0])) { |
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| 140 | return $this->_buildResponse($this->header_struct[0]); |
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| 141 | } else { |
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| 142 | // We don't fault if there are no headers; that can be handled by |
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| 143 | // the application if necessary. |
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| 144 | return null; |
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| 145 | } |
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| 146 | } |
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| 147 | |
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| 148 | /** |
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| 149 | * Recurses to build a multi dimensional array. |
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| 150 | * |
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| 151 | * @see _buildResponse() |
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| 152 | */ |
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| 153 | function _domulti($d, &$ar, &$r, &$v, $ad = 0) |
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| 154 | { |
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| 155 | if ($d) { |
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| 156 | $this->_domulti($d - 1, $ar, $r[$ar[$ad]], $v, $ad + 1); |
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| 157 | } else { |
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| 158 | $r = $v; |
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| 159 | } |
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| 160 | } |
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| 161 | |
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| 162 | /** |
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| 163 | * Loops through the message, building response structures. |
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| 164 | * |
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| 165 | * @param integer $pos Position. |
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| 166 | * |
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| 167 | * @return SOAP_Value |
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| 168 | */ |
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| 169 | function _buildResponse($pos) |
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| 170 | { |
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| 171 | $response = null; |
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| 172 | |
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| 173 | if (isset($this->message[$pos]['children'])) { |
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| 174 | $children = explode('|', $this->message[$pos]['children']); |
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| 175 | foreach ($children as $c => $child_pos) { |
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| 176 | if ($this->message[$child_pos]['type'] != null) { |
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| 177 | $response[] = $this->_buildResponse($child_pos); |
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| 178 | } |
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| 179 | } |
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| 180 | if (isset($this->message[$pos]['arraySize'])) { |
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| 181 | $ardepth = count($this->message[$pos]['arraySize']); |
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| 182 | if ($ardepth > 1) { |
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| 183 | $ar = array_pad(array(), $ardepth, 0); |
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| 184 | if (isset($this->message[$pos]['arrayOffset'])) { |
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| 185 | for ($i = 0; $i < $ardepth; $i++) { |
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| 186 | $ar[$i] += $this->message[$pos]['arrayOffset'][$i]; |
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| 187 | } |
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| 188 | } |
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| 189 | $elc = count($response); |
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| 190 | for ($i = 0; $i < $elc; $i++) { |
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| 191 | // Recurse to build a multi dimensional array. |
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| 192 | $this->_domulti($ardepth, $ar, $newresp, $response[$i]); |
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| 193 | |
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| 194 | // Increment our array pointers. |
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| 195 | $ad = $ardepth - 1; |
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| 196 | $ar[$ad]++; |
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| 197 | while ($ad > 0 && |
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| 198 | $ar[$ad] >= $this->message[$pos]['arraySize'][$ad]) { |
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| 199 | $ar[$ad] = 0; |
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| 200 | $ad--; |
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| 201 | $ar[$ad]++; |
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| 202 | } |
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| 203 | } |
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| 204 | $response = $newresp; |
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| 205 | } elseif (isset($this->message[$pos]['arrayOffset']) && |
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| 206 | $this->message[$pos]['arrayOffset'][0] > 0) { |
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| 207 | // Check for padding. |
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| 208 | $pad = $this->message[$pos]['arrayOffset'][0] + count($response) * -1; |
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| 209 | $response = array_pad($response, $pad, null); |
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| 210 | } |
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| 211 | } |
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| 212 | } |
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| 213 | |
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| 214 | // Build attributes. |
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| 215 | $attrs = array(); |
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| 216 | foreach ($this->message[$pos]['attrs'] as $atn => $atv) { |
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| 217 | if (!strstr($atn, 'xmlns') && !strpos($atn, ':')) { |
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| 218 | $attrs[$atn] = $atv; |
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| 219 | } |
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| 220 | } |
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| 221 | |
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| 222 | // Add current node's value. |
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| 223 | if ($response) { |
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| 224 | $nqn = new QName($this->message[$pos]['name'], |
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| 225 | $this->message[$pos]['namespace']); |
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| 226 | $tqn = new QName($this->message[$pos]['type'], |
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| 227 | $this->message[$pos]['type_namespace']); |
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| 228 | $response = new SOAP_Value($nqn->fqn(), |
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| 229 | $tqn->fqn(), |
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| 230 | $response, |
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| 231 | $attrs); |
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| 232 | if (isset($this->message[$pos]['arrayType'])) { |
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| 233 | $response->arrayType = $this->message[$pos]['arrayType']; |
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| 234 | } |
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| 235 | } else { |
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| 236 | $nqn = new QName($this->message[$pos]['name'], |
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| 237 | $this->message[$pos]['namespace']); |
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| 238 | $tqn = new QName($this->message[$pos]['type'], |
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| 239 | $this->message[$pos]['type_namespace']); |
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| 240 | // Check if value is an empty array |
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| 241 | if ($tqn->name == 'Array') { |
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| 242 | $response =& new SOAP_Value($nqn->fqn(), $tqn->fqn(), |
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| 243 | array(), $attrs); |
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| 244 | } else { |
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| 245 | $response = new SOAP_Value($nqn->fqn(), |
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| 246 | $tqn->fqn(), |
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| 247 | $this->message[$pos]['cdata'], |
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| 248 | $attrs); |
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| 249 | } |
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| 250 | } |
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| 251 | |
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| 252 | // Handle header attribute that we need. |
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| 253 | if (array_key_exists('actor', $this->message[$pos])) { |
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| 254 | $response->actor = $this->message[$pos]['actor']; |
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| 255 | } |
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| 256 | if (array_key_exists('mustUnderstand', $this->message[$pos])) { |
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| 257 | $response->mustunderstand = $this->message[$pos]['mustUnderstand']; |
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| 258 | } |
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| 259 | return $response; |
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| 260 | } |
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| 261 | |
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| 262 | /** |
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| 263 | * Start element handler used with the XML parser. |
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| 264 | */ |
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| 265 | function _startElement($parser, $name, $attrs) |
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| 266 | { |
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| 267 | // Position in a total number of elements, starting from 0. |
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| 268 | // Update class level position. |
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| 269 | $pos = $this->position++; |
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| 270 | |
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| 271 | // And set mine. |
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| 272 | $this->message[$pos] = array( |
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| 273 | 'type' => '', |
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| 274 | 'type_namespace' => '', |
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| 275 | 'cdata' => '', |
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| 276 | 'pos' => $pos, |
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| 277 | 'id' => ''); |
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| 278 | |
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| 279 | // Parent/child/depth determinations. |
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| 280 | |
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| 281 | // depth = How many levels removed from root? |
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| 282 | // Set mine as current global depth and increment global depth value. |
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| 283 | $this->message[$pos]['depth'] = $this->depth++; |
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| 284 | |
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| 285 | // Else add self as child to whoever the current parent is. |
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| 286 | if ($pos != 0) { |
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| 287 | if (isset($this->message[$this->parent]['children'])) { |
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| 288 | $this->message[$this->parent]['children'] .= '|' . $pos; |
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| 289 | } else { |
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| 290 | $this->message[$this->parent]['children'] = $pos; |
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| 291 | } |
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| 292 | } |
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| 293 | |
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| 294 | // Set my parent. |
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| 295 | $this->message[$pos]['parent'] = $this->parent; |
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| 296 | |
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| 297 | // Set self as current value for this depth. |
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| 298 | $this->depth_array[$this->depth] = $pos; |
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| 299 | // Set self as current parent. |
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| 300 | $this->parent = $pos; |
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| 301 | $qname = new QName($name); |
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| 302 | // Set status. |
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| 303 | if (strcasecmp('envelope', $qname->name) == 0) { |
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| 304 | $this->status = 'envelope'; |
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| 305 | } elseif (strcasecmp('header', $qname->name) == 0) { |
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| 306 | $this->status = 'header'; |
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| 307 | $this->header_struct_name[] = $this->curent_root_struct_name = $qname->name; |
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| 308 | $this->header_struct[] = $this->curent_root_struct = $pos; |
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| 309 | $this->message[$pos]['type'] = 'Struct'; |
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| 310 | } elseif (strcasecmp('body', $qname->name) == 0) { |
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| 311 | $this->status = 'body'; |
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| 312 | $this->bodyDepth = $this->depth; |
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| 313 | |
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| 314 | // Set method |
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| 315 | } elseif ($this->status == 'body') { |
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| 316 | // Is this element allowed to be a root? |
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| 317 | // TODO: this needs to be optimized, we loop through $attrs twice |
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| 318 | // now. |
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| 319 | $can_root = $this->depth == $this->bodyDepth + 1; |
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| 320 | if ($can_root) { |
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| 321 | foreach ($attrs as $key => $value) { |
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| 322 | if (stristr($key, ':root') && !$value) { |
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| 323 | $can_root = false; |
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| 324 | } |
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| 325 | } |
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| 326 | } |
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| 327 | |
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| 328 | if ($can_root) { |
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| 329 | $this->status = 'method'; |
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| 330 | $this->root_struct_name[] = $this->curent_root_struct_name = $qname->name; |
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| 331 | $this->root_struct[] = $this->curent_root_struct = $pos; |
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| 332 | $this->message[$pos]['type'] = 'Struct'; |
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| 333 | } |
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| 334 | } |
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| 335 | |
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| 336 | // Set my status. |
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| 337 | $this->message[$pos]['status'] = $this->status; |
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| 338 | |
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| 339 | // Set name. |
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| 340 | $this->message[$pos]['name'] = htmlspecialchars($qname->name); |
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| 341 | |
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| 342 | // Set attributes. |
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| 343 | $this->message[$pos]['attrs'] = $attrs; |
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| 344 | |
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| 345 | // Loop through attributes, logging ns and type declarations. |
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| 346 | foreach ($attrs as $key => $value) { |
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| 347 | // If ns declarations, add to class level array of valid |
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| 348 | // namespaces. |
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| 349 | $kqn = new QName($key); |
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| 350 | if ($kqn->ns == 'xmlns') { |
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| 351 | $prefix = $kqn->name; |
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| 352 | |
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| 353 | if (in_array($value, $this->_XMLSchema)) { |
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| 354 | $this->_setSchemaVersion($value); |
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| 355 | } |
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| 356 | |
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| 357 | $this->_namespaces[$value] = $prefix; |
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| 358 | |
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| 359 | // Set method namespace. |
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| 360 | } elseif ($key == 'xmlns') { |
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| 361 | $qname->ns = $this->_getNamespacePrefix($value); |
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| 362 | $qname->namespace = $value; |
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| 363 | } elseif ($kqn->name == 'actor') { |
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| 364 | $this->message[$pos]['actor'] = $value; |
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| 365 | } elseif ($kqn->name == 'mustUnderstand') { |
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| 366 | $this->message[$pos]['mustUnderstand'] = $value; |
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| 367 | |
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| 368 | // If it's a type declaration, set type. |
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| 369 | } elseif ($kqn->name == 'type') { |
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| 370 | $vqn = new QName($value); |
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| 371 | $this->message[$pos]['type'] = $vqn->name; |
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| 372 | $this->message[$pos]['type_namespace'] = $this->_getNamespaceForPrefix($vqn->ns); |
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| 373 | |
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| 374 | // Should do something here with the namespace of specified |
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| 375 | // type? |
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| 376 | |
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| 377 | } elseif ($kqn->name == 'arrayType') { |
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| 378 | $vqn = new QName($value); |
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| 379 | $this->message[$pos]['type'] = 'Array'; |
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| 380 | if (isset($vqn->arraySize)) { |
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| 381 | $this->message[$pos]['arraySize'] = $vqn->arraySize; |
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| 382 | } |
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| 383 | $this->message[$pos]['arrayType'] = $vqn->name; |
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| 384 | |
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| 385 | } elseif ($kqn->name == 'offset') { |
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| 386 | $this->message[$pos]['arrayOffset'] = split(',', substr($value, 1, strlen($value) - 2)); |
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| 387 | |
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| 388 | } elseif ($kqn->name == 'id') { |
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| 389 | // Save id to reference array. |
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| 390 | $this->references[$value] = $pos; |
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| 391 | $this->message[$pos]['id'] = $value; |
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| 392 | |
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| 393 | } elseif ($kqn->name == 'href') { |
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| 394 | if ($value[0] == '#') { |
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| 395 | $ref = substr($value, 1); |
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| 396 | if (isset($this->references[$ref])) { |
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| 397 | // cdata, type, inval. |
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| 398 | $ref_pos = $this->references[$ref]; |
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| 399 | $this->message[$pos]['children'] = &$this->message[$ref_pos]['children']; |
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| 400 | $this->message[$pos]['cdata'] = &$this->message[$ref_pos]['cdata']; |
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| 401 | $this->message[$pos]['type'] = &$this->message[$ref_pos]['type']; |
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| 402 | $this->message[$pos]['arraySize'] = &$this->message[$ref_pos]['arraySize']; |
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| 403 | $this->message[$pos]['arrayType'] = &$this->message[$ref_pos]['arrayType']; |
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| 404 | } else { |
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| 405 | // Reverse reference, store in 'need reference'. |
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| 406 | if (!isset($this->need_references[$ref])) { |
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| 407 | $this->need_references[$ref] = array(); |
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| 408 | } |
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| 409 | $this->need_references[$ref][] = $pos; |
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| 410 | } |
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| 411 | } elseif (isset($this->attachments[$value])) { |
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| 412 | $this->message[$pos]['cdata'] = $this->attachments[$value]; |
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| 413 | } |
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| 414 | } |
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| 415 | } |
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| 416 | // See if namespace is defined in tag. |
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| 417 | if (isset($attrs['xmlns:' . $qname->ns])) { |
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| 418 | $namespace = $attrs['xmlns:' . $qname->ns]; |
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| 419 | } elseif ($qname->ns && !$qname->namespace) { |
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| 420 | $namespace = $this->_getNamespaceForPrefix($qname->ns); |
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| 421 | } else { |
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| 422 | // Get namespace. |
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| 423 | $namespace = $qname->namespace ? $qname->namespace : $this->default_namespace; |
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| 424 | } |
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| 425 | $this->message[$pos]['namespace'] = $namespace; |
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| 426 | $this->default_namespace = $namespace; |
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| 427 | } |
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| 428 | |
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| 429 | /** |
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| 430 | * End element handler used with the XML parser. |
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| 431 | */ |
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| 432 | function _endElement($parser, $name) |
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| 433 | { |
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| 434 | // Position of current element is equal to the last value left in |
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| 435 | // depth_array for my depth. |
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| 436 | $pos = $this->depth_array[$this->depth]; |
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| 437 | |
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| 438 | // Bring depth down a notch. |
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| 439 | $this->depth--; |
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| 440 | $qname = new QName($name); |
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| 441 | |
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| 442 | // Get type if not explicitly declared in an xsi:type attribute. |
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| 443 | // TODO: check on integrating WSDL validation here. |
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| 444 | if ($this->message[$pos]['type'] == '') { |
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| 445 | if (isset($this->message[$pos]['children'])) { |
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| 446 | /* this is slow, need to look at some faster method |
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| 447 | $children = explode('|', $this->message[$pos]['children']); |
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| 448 | if (count($children) > 2 && |
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| 449 | $this->message[$children[1]]['name'] == $this->message[$children[2]]['name']) { |
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| 450 | $this->message[$pos]['type'] = 'Array'; |
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| 451 | } else { |
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| 452 | $this->message[$pos]['type'] = 'Struct'; |
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| 453 | }*/ |
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| 454 | $this->message[$pos]['type'] = 'Struct'; |
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| 455 | } else { |
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| 456 | $parent = $this->message[$pos]['parent']; |
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| 457 | if ($this->message[$parent]['type'] == 'Array' && |
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| 458 | isset($this->message[$parent]['arrayType'])) { |
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| 459 | $this->message[$pos]['type'] = $this->message[$parent]['arrayType']; |
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| 460 | } else { |
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| 461 | $this->message[$pos]['type'] = 'string'; |
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| 462 | } |
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| 463 | } |
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| 464 | } |
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| 465 | |
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| 466 | // If tag we are currently closing is the method wrapper. |
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| 467 | if ($pos == $this->curent_root_struct) { |
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| 468 | $this->status = 'body'; |
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| 469 | } elseif ($qname->name == 'Body' || $qname->name == 'Header') { |
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| 470 | $this->status = 'envelope'; |
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| 471 | } |
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| 472 | |
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| 473 | // Set parent back to my parent. |
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| 474 | $this->parent = $this->message[$pos]['parent']; |
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| 475 | |
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| 476 | // Handle any reverse references now. |
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| 477 | $idref = $this->message[$pos]['id']; |
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| 478 | |
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| 479 | if ($idref != '' && isset($this->need_references[$idref])) { |
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| 480 | foreach ($this->need_references[$idref] as $ref_pos) { |
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| 481 | // XXX is this stuff there already? |
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| 482 | $this->message[$ref_pos]['children'] = &$this->message[$pos]['children']; |
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| 483 | $this->message[$ref_pos]['cdata'] = &$this->message[$pos]['cdata']; |
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| 484 | $this->message[$ref_pos]['type'] = &$this->message[$pos]['type']; |
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| 485 | $this->message[$ref_pos]['arraySize'] = &$this->message[$pos]['arraySize']; |
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| 486 | $this->message[$ref_pos]['arrayType'] = &$this->message[$pos]['arrayType']; |
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| 487 | } |
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| 488 | } |
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| 489 | } |
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| 490 | |
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| 491 | /** |
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| 492 | * Element content handler used with the XML parser. |
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| 493 | */ |
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| 494 | function _characterData($parser, $data) |
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| 495 | { |
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| 496 | $pos = $this->depth_array[$this->depth]; |
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| 497 | if (isset($this->message[$pos]['cdata'])) { |
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| 498 | $this->message[$pos]['cdata'] .= $data; |
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| 499 | } else { |
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| 500 | $this->message[$pos]['cdata'] = $data; |
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| 501 | } |
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| 502 | } |
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| 503 | |
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| 504 | } |
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