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 license@php.net 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 <dietrich@ganx4.com> Original Author
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17 | * @author Shane Caraveo <Shane@Caraveo.com> Port to PEAR and more
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18 | * @author Chuck Hagenbuch <chuck@horde.org> Maintenance
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19 | * @author Jan Schneider <jan@horde.org> 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 <shane@php.net> Conversion to PEAR and updates
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38 | * @author Dietrich Ayala <dietrich@ganx4.com> 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 {
|
---|
500 | $this->message[$pos]['cdata'] = $data;
|
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501 | }
|
---|
502 | }
|
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503 |
|
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504 | }
|
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