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1 <?php |
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2 /** |
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3 * SimplePie |
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4 * |
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5 * A PHP-Based RSS and Atom Feed Framework. |
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6 * Takes the hard work out of managing a complete RSS/Atom solution. |
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7 * |
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8 * Copyright (c) 2004-2012, Ryan Parman, Geoffrey Sneddon, Ryan McCue, and contributors |
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9 * All rights reserved. |
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10 * |
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11 * Redistribution and use in source and binary forms, with or without modification, are |
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12 * permitted provided that the following conditions are met: |
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13 * |
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14 * * Redistributions of source code must retain the above copyright notice, this list of |
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15 * conditions and the following disclaimer. |
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16 * |
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17 * * Redistributions in binary form must reproduce the above copyright notice, this list |
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18 * of conditions and the following disclaimer in the documentation and/or other materials |
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19 * provided with the distribution. |
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20 * |
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21 * * Neither the name of the SimplePie Team nor the names of its contributors may be used |
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22 * to endorse or promote products derived from this software without specific prior |
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23 * written permission. |
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24 * |
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25 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS |
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26 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY |
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27 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS |
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28 * AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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29 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
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30 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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31 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR |
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32 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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33 * POSSIBILITY OF SUCH DAMAGE. |
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34 * |
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35 * @package SimplePie |
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36 * @version 1.3.1 |
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37 * @copyright 2004-2012 Ryan Parman, Geoffrey Sneddon, Ryan McCue |
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38 * @author Ryan Parman |
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39 * @author Geoffrey Sneddon |
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40 * @author Ryan McCue |
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41 * @link http://simplepie.org/ SimplePie |
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42 * @license http://www.opensource.org/licenses/bsd-license.php BSD License |
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43 */ |
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44 |
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45 /** |
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46 * Used for fetching remote files and reading local files |
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47 * |
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48 * Supports HTTP 1.0 via cURL or fsockopen, with spotty HTTP 1.1 support |
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49 * |
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50 * This class can be overloaded with {@see SimplePie::set_file_class()} |
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51 * |
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52 * @package SimplePie |
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53 * @subpackage HTTP |
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54 * @todo Move to properly supporting RFC2616 (HTTP/1.1) |
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55 */ |
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56 class SimplePie_File |
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57 { |
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58 var $url; |
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59 var $useragent; |
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60 var $success = true; |
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61 var $headers = array(); |
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62 var $body; |
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63 var $status_code; |
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64 var $redirects = 0; |
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65 var $error; |
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66 var $method = SIMPLEPIE_FILE_SOURCE_NONE; |
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67 |
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68 public function __construct($url, $timeout = 10, $redirects = 5, $headers = null, $useragent = null, $force_fsockopen = false) |
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69 { |
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70 if (class_exists('idna_convert')) |
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71 { |
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72 $idn = new idna_convert(); |
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73 $parsed = SimplePie_Misc::parse_url($url); |
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74 $url = SimplePie_Misc::compress_parse_url($parsed['scheme'], $idn->encode($parsed['authority']), $parsed['path'], $parsed['query'], $parsed['fragment']); |
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75 } |
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76 $this->url = $url; |
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77 $this->useragent = $useragent; |
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78 if (preg_match('/^http(s)?:\/\//i', $url)) |
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79 { |
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80 if ($useragent === null) |
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81 { |
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82 $useragent = ini_get('user_agent'); |
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83 $this->useragent = $useragent; |
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84 } |
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85 if (!is_array($headers)) |
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86 { |
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87 $headers = array(); |
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88 } |
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89 if (!$force_fsockopen && function_exists('curl_exec')) |
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90 { |
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91 $this->method = SIMPLEPIE_FILE_SOURCE_REMOTE | SIMPLEPIE_FILE_SOURCE_CURL; |
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92 $fp = curl_init(); |
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93 $headers2 = array(); |
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94 foreach ($headers as $key => $value) |
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95 { |
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96 $headers2[] = "$key: $value"; |
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97 } |
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98 if (version_compare(SimplePie_Misc::get_curl_version(), '7.10.5', '>=')) |
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99 { |
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100 curl_setopt($fp, CURLOPT_ENCODING, ''); |
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101 } |
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102 curl_setopt($fp, CURLOPT_URL, $url); |
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103 curl_setopt($fp, CURLOPT_HEADER, 1); |
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104 curl_setopt($fp, CURLOPT_RETURNTRANSFER, 1); |
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105 curl_setopt($fp, CURLOPT_TIMEOUT, $timeout); |
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106 curl_setopt($fp, CURLOPT_CONNECTTIMEOUT, $timeout); |
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107 curl_setopt($fp, CURLOPT_REFERER, $url); |
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108 curl_setopt($fp, CURLOPT_USERAGENT, $useragent); |
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109 curl_setopt($fp, CURLOPT_HTTPHEADER, $headers2); |
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110 if (!ini_get('open_basedir') && !ini_get('safe_mode') && version_compare(SimplePie_Misc::get_curl_version(), '7.15.2', '>=')) |
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111 { |
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112 curl_setopt($fp, CURLOPT_FOLLOWLOCATION, 1); |
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113 curl_setopt($fp, CURLOPT_MAXREDIRS, $redirects); |
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114 } |
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115 |
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116 $this->headers = curl_exec($fp); |
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117 if (curl_errno($fp) === 23 || curl_errno($fp) === 61) |
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118 { |
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119 curl_setopt($fp, CURLOPT_ENCODING, 'none'); |
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120 $this->headers = curl_exec($fp); |
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121 } |
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122 if (curl_errno($fp)) |
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123 { |
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124 $this->error = 'cURL error ' . curl_errno($fp) . ': ' . curl_error($fp); |
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125 $this->success = false; |
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126 } |
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127 else |
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128 { |
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129 $info = curl_getinfo($fp); |
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130 curl_close($fp); |
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131 $this->headers = explode("\r\n\r\n", $this->headers, $info['redirect_count'] + 1); |
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132 $this->headers = array_pop($this->headers); |
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133 $parser = new SimplePie_HTTP_Parser($this->headers); |
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134 if ($parser->parse()) |
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135 { |
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136 $this->headers = $parser->headers; |
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137 $this->body = $parser->body; |
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138 $this->status_code = $parser->status_code; |
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139 if ((in_array($this->status_code, array(300, 301, 302, 303, 307)) || $this->status_code > 307 && $this->status_code < 400) && isset($this->headers['location']) && $this->redirects < $redirects) |
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140 { |
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141 $this->redirects++; |
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142 $location = SimplePie_Misc::absolutize_url($this->headers['location'], $url); |
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143 return $this->__construct($location, $timeout, $redirects, $headers, $useragent, $force_fsockopen); |
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144 } |
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145 } |
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146 } |
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147 } |
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148 else |
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149 { |
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150 $this->method = SIMPLEPIE_FILE_SOURCE_REMOTE | SIMPLEPIE_FILE_SOURCE_FSOCKOPEN; |
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151 $url_parts = parse_url($url); |
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152 $socket_host = $url_parts['host']; |
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153 if (isset($url_parts['scheme']) && strtolower($url_parts['scheme']) === 'https') |
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154 { |
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155 $socket_host = "ssl://$url_parts[host]"; |
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156 $url_parts['port'] = 443; |
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157 } |
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158 if (!isset($url_parts['port'])) |
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159 { |
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160 $url_parts['port'] = 80; |
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161 } |
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162 $fp = @fsockopen($socket_host, $url_parts['port'], $errno, $errstr, $timeout); |
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163 if (!$fp) |
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164 { |
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165 $this->error = 'fsockopen error: ' . $errstr; |
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166 $this->success = false; |
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167 } |
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168 else |
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169 { |
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170 stream_set_timeout($fp, $timeout); |
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171 if (isset($url_parts['path'])) |
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172 { |
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173 if (isset($url_parts['query'])) |
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174 { |
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175 $get = "$url_parts[path]?$url_parts[query]"; |
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176 } |
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177 else |
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178 { |
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179 $get = $url_parts['path']; |
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180 } |
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181 } |
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182 else |
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183 { |
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184 $get = '/'; |
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185 } |
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186 $out = "GET $get HTTP/1.1\r\n"; |
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187 $out .= "Host: $url_parts[host]\r\n"; |
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188 $out .= "User-Agent: $useragent\r\n"; |
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189 if (extension_loaded('zlib')) |
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190 { |
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191 $out .= "Accept-Encoding: x-gzip,gzip,deflate\r\n"; |
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192 } |
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193 |
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194 if (isset($url_parts['user']) && isset($url_parts['pass'])) |
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195 { |
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196 $out .= "Authorization: Basic " . base64_encode("$url_parts[user]:$url_parts[pass]") . "\r\n"; |
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197 } |
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198 foreach ($headers as $key => $value) |
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199 { |
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200 $out .= "$key: $value\r\n"; |
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201 } |
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202 $out .= "Connection: Close\r\n\r\n"; |
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203 fwrite($fp, $out); |
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204 |
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205 $info = stream_get_meta_data($fp); |
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206 |
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207 $this->headers = ''; |
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208 while (!$info['eof'] && !$info['timed_out']) |
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209 { |
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210 $this->headers .= fread($fp, 1160); |
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211 $info = stream_get_meta_data($fp); |
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212 } |
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213 if (!$info['timed_out']) |
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214 { |
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215 $parser = new SimplePie_HTTP_Parser($this->headers); |
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216 if ($parser->parse()) |
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217 { |
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218 $this->headers = $parser->headers; |
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219 $this->body = $parser->body; |
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220 $this->status_code = $parser->status_code; |
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221 if ((in_array($this->status_code, array(300, 301, 302, 303, 307)) || $this->status_code > 307 && $this->status_code < 400) && isset($this->headers['location']) && $this->redirects < $redirects) |
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222 { |
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223 $this->redirects++; |
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224 $location = SimplePie_Misc::absolutize_url($this->headers['location'], $url); |
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225 return $this->__construct($location, $timeout, $redirects, $headers, $useragent, $force_fsockopen); |
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226 } |
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227 if (isset($this->headers['content-encoding'])) |
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228 { |
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229 // Hey, we act dumb elsewhere, so let's do that here too |
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230 switch (strtolower(trim($this->headers['content-encoding'], "\x09\x0A\x0D\x20"))) |
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231 { |
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232 case 'gzip': |
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233 case 'x-gzip': |
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234 $decoder = new SimplePie_gzdecode($this->body); |
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235 if (!$decoder->parse()) |
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236 { |
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237 $this->error = 'Unable to decode HTTP "gzip" stream'; |
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238 $this->success = false; |
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239 } |
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240 else |
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241 { |
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242 $this->body = $decoder->data; |
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243 } |
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244 break; |
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245 |
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246 case 'deflate': |
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247 if (($decompressed = gzinflate($this->body)) !== false) |
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248 { |
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249 $this->body = $decompressed; |
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250 } |
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251 else if (($decompressed = gzuncompress($this->body)) !== false) |
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252 { |
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253 $this->body = $decompressed; |
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254 } |
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255 else if (function_exists('gzdecode') && ($decompressed = gzdecode($this->body)) !== false) |
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256 { |
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257 $this->body = $decompressed; |
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258 } |
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259 else |
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260 { |
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261 $this->error = 'Unable to decode HTTP "deflate" stream'; |
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262 $this->success = false; |
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263 } |
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264 break; |
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265 |
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266 default: |
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267 $this->error = 'Unknown content coding'; |
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268 $this->success = false; |
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269 } |
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270 } |
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271 } |
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272 } |
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273 else |
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274 { |
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275 $this->error = 'fsocket timed out'; |
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276 $this->success = false; |
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277 } |
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278 fclose($fp); |
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279 } |
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280 } |
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281 } |
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282 else |
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283 { |
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284 $this->method = SIMPLEPIE_FILE_SOURCE_LOCAL | SIMPLEPIE_FILE_SOURCE_FILE_GET_CONTENTS; |
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285 if (!$this->body = file_get_contents($url)) |
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286 { |
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287 $this->error = 'file_get_contents could not read the file'; |
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288 $this->success = false; |
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289 } |
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290 } |
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291 } |
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292 } |