ILIAS  release_5-1 Revision 5.0.0-5477-g43f3e3fab5f
class.ilHttpRequest.php
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1<?php
2/*
3+-----------------------------------------------------------------------------+
4| ILIAS open source |
5+-----------------------------------------------------------------------------+
6| Copyright (c) 1998-2001 ILIAS open source, University of Cologne |
7| |
8| This program is free software; you can redistribute it and/or |
9| modify it under the terms of the GNU General Public License |
10| as published by the Free Software Foundation; either version 2 |
11| of the License, or (at your option) any later version. |
12| |
13| This program is distributed in the hope that it will be useful, |
14| but WITHOUT ANY WARRANTY; without even the implied warranty of |
15| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
16| GNU General Public License for more details. |
17| |
18| You should have received a copy of the GNU General Public License |
19| along with this program; if not, write to the Free Software |
20| Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
21+-----------------------------------------------------------------------------+
22*/
23
34{
35 var $_fp; // HTTP socket
36 var $_url; // full URL
37 var $_host; // HTTP host
38 var $_protocol; // protocol (HTTP/HTTPS)
39 var $_uri; // request URI
40 var $_port; // port
41
42 // scan url
43 function _scan_url()
44 {
45 $req = $this->_url;
46
47 $pos = strpos($req, '://');
48 $this->_protocol = strtolower(substr($req, 0, $pos));
49
50 $req = substr($req, $pos+3);
51 $pos = strpos($req, '/');
52 if($pos === false) $pos = strlen($req);
53 $host = substr($req, 0, $pos);
54
55 if(strpos($host, ':') !== false)
56 {
57 list($this->_host, $this->_port) = explode(':', $host);
58 }
59 else
60 {
61 $this->_host = $host;
62 $this->_port = ($this->_protocol == 'https') ? 443 : 80;
63 }
64
65 $this->_uri = substr($req, $pos);
66 if($this->_uri == '') $this->_uri = '/';
67 }
68
69 // constructor
71 {
72 $this->_url = $url;
73 $this->_scan_url();
74 }
75
76 // download URL to string
78 {
79 $crlf = "\r\n";
80
81 // generate request
82 $req = 'GET ' . $this->_uri . ' HTTP/1.0' . $crlf
83 . 'Host: ' . $this->_host . $crlf
84 . $crlf;
85
86 // fetch
87 $this->_fp = fsockopen(($this->_protocol == 'https' ? 'ssl://' : '') . $this->_host, $this->_port);
88 fwrite($this->_fp, $req);
89 while(is_resource($this->_fp) && $this->_fp && !feof($this->_fp))
90 {
91 $response .= fread($this->_fp, 1024);
92 }
93 fclose($this->_fp);
94
95 // split header and body
96 $pos = strpos($response, $crlf . $crlf);
97 if($pos === false) return($response);
98 $header = substr($response, 0, $pos);
99 $body = substr($response, $pos + 2 * strlen($crlf));
100
101 // parse headers
102 $headers = array();
103 $lines = explode($crlf, $header);
104 foreach($lines as $line)
105 {
106 if(($pos = strpos($line, ':')) !== false)
107 {
108 $headers[strtolower(trim(substr($line, 0, $pos)))] = trim(substr($line, $pos+1));
109 }
110 }
111
112 // redirection?
113 if(isset($headers['location']))
114 {
115 $http = new ilHttpRequest($headers['location']);
116 return($http->DownloadToString($http));
117 }
118 else
119 {
120 return($body);
121 }
122 }
123}
124?>
ilHttpRequest class
$header
$url
Definition: shib_logout.php:72