inc/3rdparty/humble-http-agent/SimplePie_HumbleHttpAgent.php

   1 <?php
   2 /**
   3  * Humble HTTP Agent extension for SimplePie_File
   4  *
   5  * This class is designed to extend and override SimplePie_File
   6  * in order to prevent duplicate HTTP requests being sent out.
   7  * The idea is to initialise an instance of Humble HTTP Agent
   8  * and attach it, to a static class variable, of this class.
   9  * SimplePie will then automatically initialise this class
  10  *
  11  * @date 2011-02-28
  12  */
  13
  14 class SimplePie_HumbleHttpAgent extends SimplePie_File
  15 {
  16         protected static $agent;
  17         var $url;
  18         var $useragent;
  19         var $success = true;
  20         var $headers = array();
  21         var $body;
  22         var $status_code;
  23         var $redirects = 0;
  24         var $error;
  25         var $method = SIMPLEPIE_FILE_SOURCE_NONE;
  26
  27         public static function set_agent(HumbleHttpAgent $agent) {
  28                 self::$agent = $agent;
  29         }
  30
  31         public function __construct($url, $timeout = 10, $redirects = 5, $headers = null, $useragent = null, $force_fsockopen = false) {
  32                 if (class_exists('idna_convert'))
  33                 {
  34                         $idn = new idna_convert();
  35                         $parsed = SimplePie_Misc::parse_url($url);
  36                         $url = SimplePie_Misc::compress_parse_url($parsed['scheme'], $idn->encode($parsed['authority']), $parsed['path'], $parsed['query'], $parsed['fragment']);
  37                 }
  38                 $this->url = $url;
  39                 $this->useragent = $useragent;
  40                 if (preg_match('/^http(s)?:\/\//i', $url))
  41                 {
  42                         if (!is_array($headers))
  43                         {
  44                                 $headers = array();
  45                         }
  46                         $this->method = SIMPLEPIE_FILE_SOURCE_REMOTE | SIMPLEPIE_FILE_SOURCE_CURL;
  47                         $headers2 = array();
  48                         foreach ($headers as $key => $value) {
  49                                 $headers2[] = "$key: $value";
  50                         }
  51                         //TODO: allow for HTTP headers
  52                         // curl_setopt($fp, CURLOPT_HTTPHEADER, $headers2);
  53
  54                         $response = self::$agent->get($url);
  55
  56                         if ($response === false || !isset($response['status_code'])) {
  57                                 $this->error = 'failed to fetch URL';
  58                                 $this->success = false;
  59                         } else {
  60                                 // The extra lines at the end are there to satisfy SimplePie's HTTP parser.
  61                                 // The class expects a full HTTP message, whereas we're giving it only
  62                                 // headers - the new lines indicate the start of the body.
  63                                 $parser = new SimplePie_HTTP_Parser($response['headers']."\r\n\r\n");
  64                                 if ($parser->parse()) {
  65                                         $this->headers = $parser->headers;
  66                                         //$this->body = $parser->body;
  67                                         $this->body = $response['body'];
  68                                         $this->status_code = $parser->status_code;
  69                                 }
  70                         }
  71                 }
  72                 else
  73                 {
  74                         $this->error = 'invalid URL';
  75                         $this->success = false;
  76                 }
  77         }
  78 }
  79 ?>