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Commit | Line | Data |
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4188f38a | 1 | <?php |
2 | class Http{ | |
3 | private static $cache = false; | |
4 | ||
5 | public static function Request($url){ | |
6 | $url_parts = parse_url($url); | |
7 | $url_parts["port"] = isset($url_parts["port"]) ? $url_parts["port"] : 80; | |
8 | $url_parts["path"] = isset($url_parts["path"]) ? $url_parts["path"] : "/"; | |
9 | ||
10 | return self::FullRequest("GET", $url_parts["host"], $url_parts["port"], $url_parts["path"]); | |
11 | } | |
12 | ||
13 | public static function FullRequest( | |
14 | $verb = 'GET', /* HTTP Request Method (GET and POST supported) */ | |
15 | $ip, /* Target IP/Hostname */ | |
16 | $port = 80, /* Target TCP port */ | |
17 | $uri = '/', /* Target URI */ | |
18 | $getdata = array(), /* HTTP GET Data ie. array('var1' => 'val1', 'var2' => 'val2') */ | |
19 | $postdata = array(), /* HTTP POST Data ie. array('var1' => 'val1', 'var2' => 'val2') */ | |
20 | $cookie = array(), /* HTTP Cookie Data ie. array('var1' => 'val1', 'var2' => 'val2') */ | |
21 | $custom_headers = array(), /* Custom HTTP headers ie. array('Referer: http://localhost/ */ | |
22 | $timeout = 1000, /* Socket timeout in milliseconds */ | |
23 | $req_hdr = false, /* Include HTTP request headers */ | |
24 | $res_hdr = false, /* Include HTTP response headers */ | |
25 | $depth = 4 /* Depth of the iteration left (to avoid redirection loops) */ | |
26 | ) | |
27 | { | |
28 | if(self::$cache){ | |
29 | $cacheFile = "cache/".$ip."/".str_replace("/", "...", $uri); | |
30 | ||
31 | if(is_file($cacheFile)){ | |
32 | $data = file_get_contents($cacheFile); | |
33 | ||
34 | return self::resolveTruncated($data); | |
35 | } | |
36 | } | |
37 | $ret = ''; | |
38 | $verb = strtoupper($verb); | |
39 | $cookie_str = ''; | |
40 | $getdata_str = count($getdata) ? '?' : ''; | |
41 | $postdata_str = ''; | |
42 | ||
43 | foreach ($getdata as $k => $v) | |
44 | $getdata_str .= urlencode($k) .'='. urlencode($v); | |
45 | ||
46 | foreach ($postdata as $k => $v) | |
47 | $postdata_str .= urlencode($k) .'='. urlencode($v) .'&'; | |
48 | ||
49 | foreach ($cookie as $k => $v) | |
50 | $cookie_str .= urlencode($k) .'='. urlencode($v) .'; '; | |
51 | ||
52 | $crlf = "\r\n"; | |
53 | $req = $verb .' '. $uri . $getdata_str .' HTTP/1.1' . $crlf; | |
54 | $req .= 'Host: '. $ip . $crlf; | |
55 | $req .= 'User-Agent: Mozilla/5.0 Firefox/3.6.12' . $crlf; | |
56 | $req .= 'Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8' . $crlf; | |
57 | $req .= 'Accept-Language: en-us,en;q=0.5' . $crlf; | |
58 | $req .= 'Accept-Encoding: deflate' . $crlf; | |
59 | $req .= 'Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7' . $crlf; | |
60 | ||
61 | ||
62 | foreach ($custom_headers as $k => $v) | |
63 | $req .= $k .': '. $v . $crlf; | |
64 | ||
65 | if (!empty($cookie_str)) | |
66 | $req .= 'Cookie: '. substr($cookie_str, 0, -2) . $crlf; | |
67 | ||
68 | if ($verb == 'POST' && !empty($postdata_str)) | |
69 | { | |
70 | $postdata_str = substr($postdata_str, 0, -1); | |
71 | $req .= 'Content-Type: application/x-www-form-urlencoded' . $crlf; | |
72 | $req .= 'Content-Length: '. strlen($postdata_str) . $crlf . $crlf; | |
73 | $req .= $postdata_str; | |
74 | } | |
75 | else $req .= $crlf; | |
76 | ||
77 | if ($req_hdr) | |
78 | $ret .= $req; | |
79 | ||
80 | if (($fp = @fsockopen($ip, $port, $errno, $errstr)) == false) | |
81 | return "Error $errno: $errstr\n"; | |
82 | ||
83 | stream_set_timeout($fp, 0, $timeout * 1000); | |
84 | ||
85 | fputs($fp, $req); | |
86 | $ret .= stream_get_contents($fp); | |
87 | fclose($fp); | |
88 | ||
89 | $headerSplit = strpos($ret, "\r\n\r\n"); | |
90 | $header = substr($ret, 0, $headerSplit); | |
91 | ||
92 | $redirectURL = self::CheckForRedirect($header); | |
93 | ||
94 | if($redirectURL !== false){ | |
95 | if($depth > 0){ | |
96 | $url_parts = parse_url($redirectURL); | |
97 | $url_parts["port"] = isset($url_parts["port"]) ? $url_parts["port"] : 80; | |
98 | $url_parts["path"] = isset($url_parts["path"]) ? $url_parts["path"] : "/"; | |
99 | ||
100 | return self::FullRequest($verb, $url_parts["host"], $url_parts["port"], $url_parts["path"], $getdata, $postdata, $cookie, $custom_headers, $timeout, $req_hdr, $res_hdr, $depth-1); | |
101 | }else{ | |
102 | return "Redirect loop, stopping..."; | |
103 | } | |
104 | } | |
105 | ||
106 | $truncated = false; | |
107 | $headerLines = explode("\r\n", $header); | |
108 | foreach($headerLines as $line){ | |
109 | list($name, $value) = explode(":", $line); | |
110 | $name = trim($name); | |
111 | $value = trim($value); | |
112 | ||
113 | if(strtolower($name) == "transfer-encoding" && strtolower($value) == "chunked"){ //TODO: Put right values! | |
114 | $truncated = true; | |
115 | } | |
116 | } | |
117 | ||
118 | if (!$res_hdr) | |
119 | $ret = substr($ret, $headerSplit + 4); | |
120 | ||
121 | if($truncated){ | |
122 | $ret = self::resolveTruncated($ret); | |
123 | } | |
124 | if(self::$cache){ | |
125 | if(!is_dir("cache")){ | |
126 | mkdir("cache"); | |
127 | } | |
128 | if(!is_dir("cache/".$ip)){ | |
129 | mkdir("cache/".$ip); | |
130 | } | |
131 | if(!is_file("cache/".$ip."/".str_replace("/", "...", $uri))){ | |
132 | $h = fopen("cache/".$ip."/".str_replace("/", "...", $uri), "w"); | |
133 | fwrite($h, $ret); | |
134 | fclose($h); | |
135 | } | |
136 | } | |
137 | ||
138 | return $ret; | |
139 | } | |
140 | ||
141 | private static function resolveTruncated($data){ | |
142 | $pos = 0; | |
143 | $end = strlen($data); | |
144 | $out = ""; | |
145 | ||
146 | while($pos < $end){ | |
147 | $endVal = strpos($data, "\r\n", $pos); | |
148 | $value = hexdec(substr($data, $pos, $endVal-$pos)); | |
149 | $out .= substr($data, $endVal+2, $value); | |
150 | $pos = $endVal+2+$value; | |
151 | } | |
152 | ||
153 | return $out; | |
154 | } | |
155 | ||
156 | private static function CheckForRedirect($header){ | |
157 | $firstLine = substr($header, 0, strpos($header, "\r\n")); | |
158 | list($httpVersion, $statusCode, $message) = explode(" ", $firstLine); | |
159 | ||
160 | if(substr($statusCode, 0, 1) == "3"){ | |
161 | $part = substr($header, strpos(strtolower($header), "location: ")+strlen("location: ")); | |
162 | $location = trim(substr($part, 0, strpos($part, "\r\n"))); | |
163 | ||
164 | if(strlen($location) > 0){ | |
165 | return $location; | |
166 | } | |
167 | } | |
168 | return false; | |
169 | } | |
170 | } | |
171 | ?> |