2 rcs_id('$Id: HttpClient.php,v 1.5 2004-04-29 19:34:24 rurban Exp $');
5 Version 0.9, 6th April 2003 - Simon Willison ( http://simon.incutio.com/ )
6 Manual: http://scripts.incutio.com/httpclient/
8 Copyright © 2003 Incutio Limited
9 License: http://www.opensource.org/licenses/artistic-license.php
19 var $cookies = array();
21 var $accept = 'text/xml,application/xml,application/xhtml+xml,text/html,text/plain,image/png,image/jpeg,image/gif,*/*';
22 var $accept_encoding = 'gzip';
23 var $accept_language = 'en-us';
24 var $user_agent = 'Incutio HttpClient v0.9';
28 var $persist_cookies = true; // If true, received cookies are placed in the $this->cookies array ready for the next request
29 // Note: This currently ignores the cookie path (and time) completely. Time is not important,
30 // but path could possibly lead to security problems.
31 var $persist_referers = true; // For each request, sends path of last request as referer
33 var $handle_redirects = true; // Auaomtically redirect if Location or URI header is found
34 var $max_redirects = 5;
35 var $headers_only = false; // If true, stops receiving once headers have been read.
36 // Basic authorization variables
41 var $headers = array();
45 var $redirect_count = 0;
46 var $cookie_host = '';
48 function HttpClient($host, $port=80) {
52 function get($path, $data = false) {
54 $this->method = 'GET';
56 $this->path .= '?'.$this->buildQueryString($data);
58 return $this->doRequest();
60 function post($path, $data) {
62 $this->method = 'POST';
63 $this->postdata = $this->buildQueryString($data);
64 return $this->doRequest();
66 function buildQueryString($data) {
68 if (is_array($data)) {
69 // Change data in to postable data
70 foreach ($data as $key => $val) {
72 foreach ($val as $val2) {
73 $querystring .= urlencode($key).'='.urlencode($val2).'&';
76 $querystring .= urlencode($key).'='.urlencode($val).'&';
79 $querystring = substr($querystring, 0, -1); // Eliminate unnecessary &
85 function doRequest() {
86 // Performs the actual HTTP request, returning true or false depending on outcome
87 if (!$fp = @fsockopen($this->host, $this->port, $errno, $errstr, $this->timeout)) {
91 $this->errormsg = 'Socket creation failed (-3)';
93 $this->errormsg = 'DNS lookup failure (-4)';
95 $this->errormsg = 'Connection refused or timed out (-5)';
97 $this->errormsg = 'Connection failed ('.$errno.')';
98 $this->errormsg .= ' '.$errstr;
99 $this->debug($this->errormsg);
103 if (check_php_version(4,3,0))
104 socket_set_timeout($fp, $this->timeout);
105 $request = $this->buildRequest();
106 $this->debug('Request', $request);
107 fwrite($fp, $request);
108 // Reset all the variables that should not persist between requests
109 $this->headers = array();
111 $this->errormsg = '';
112 // Set a couple of flags
115 // Now start reading back the response
117 $line = fgets($fp, 4096);
119 // Deal with first line of returned data
121 if (!preg_match('/HTTP\/(\\d\\.\\d)\\s*(\\d+)\\s*(.*)/', $line, $m)) {
122 $this->errormsg = "Status code line invalid: ".htmlentities($line);
123 $this->debug($this->errormsg);
126 $http_version = $m[1]; // not used
127 $this->status = $m[2];
128 $status_string = $m[3]; // not used
129 $this->debug(trim($line));
133 if (trim($line) == '') {
135 $this->debug('Received Headers', $this->headers);
136 if ($this->headers_only) {
137 break; // Skip the rest of the input
141 if (!preg_match('/([^:]+):\\s*(.*)/', $line, $m)) {
142 // Skip to the next header
145 $key = strtolower(trim($m[1]));
147 // Deal with the possibility of multiple headers of same name
148 if (isset($this->headers[$key])) {
149 if (is_array($this->headers[$key])) {
150 $this->headers[$key][] = $val;
152 $this->headers[$key] = array($this->headers[$key], $val);
155 $this->headers[$key] = $val;
159 // We're not in the headers, so append the line to the contents
160 $this->content .= $line;
163 // If data is compressed, uncompress it
164 if (isset($this->headers['content-encoding']) && $this->headers['content-encoding'] == 'gzip') {
165 $this->debug('Content is gzip encoded, unzipping it');
166 $this->content = substr($this->content, 10); // See http://www.php.net/manual/en/function.gzencode.php
167 $this->content = gzinflate($this->content);
169 // If $persist_cookies, deal with any cookies
170 if ($this->persist_cookies && isset($this->headers['set-cookie']) && $this->host == $this->cookie_host) {
171 $cookies = $this->headers['set-cookie'];
172 if (!is_array($cookies)) {
173 $cookies = array($cookies);
175 foreach ($cookies as $cookie) {
176 if (preg_match('/([^=]+)=([^;]+);/', $cookie, $m)) {
177 $this->cookies[$m[1]] = $m[2];
180 // Record domain of cookies for security reasons
181 $this->cookie_host = $this->host;
183 // If $persist_referers, set the referer ready for the next request
184 if (isset($this->persist_referers)) {
185 $this->debug('Persisting referer: '.$this->getRequestURL());
186 $this->referer = $this->getRequestURL();
188 // Finally, if handle_redirects and a redirect is sent, do that
189 if (isset($this->handle_redirects)) {
190 if (++$this->redirect_count >= $this->max_redirects) {
191 $this->errormsg = 'Number of redirects exceeded maximum ('.$this->max_redirects.')';
192 $this->debug($this->errormsg);
193 $this->redirect_count = 0;
196 $location = isset($this->headers['location']) ? $this->headers['location'] : '';
197 $uri = isset($this->headers['uri']) ? $this->headers['uri'] : '';
198 if ($location || $uri) {
199 $url = parse_url($location.$uri);
200 // This will FAIL if redirect is to a different site
201 return $this->get($url['path']);
206 function buildRequest() {
208 $headers[] = "{$this->method} {$this->path} HTTP/1.0"; // Using 1.1 leads to all manner of problems, such as "chunked" encoding
209 $headers[] = "Host: {$this->host}";
210 $headers[] = "User-Agent: {$this->user_agent}";
211 $headers[] = "Accept: {$this->accept}";
212 if ($this->use_gzip) {
213 $headers[] = "Accept-encoding: {$this->accept_encoding}";
215 $headers[] = "Accept-language: {$this->accept_language}";
216 if (!empty($this->referer)) {
217 $headers[] = "Referer: {$this->referer}";
220 if (!empty($this->cookies)) {
221 $cookie = 'Cookie: ';
222 foreach ($this->cookies as $key => $value) {
223 $cookie .= "$key=$value; ";
225 $headers[] = $cookie;
227 // Basic authentication
228 if (!empty($this->username) && !empty($this->password)) {
229 $headers[] = 'Authorization: BASIC '.base64_encode($this->username.':'.$this->password);
231 // If this is a POST, set the content type and length
232 if ($this->postdata) {
233 $headers[] = 'Content-Type: application/x-www-form-urlencoded';
234 $headers[] = 'Content-Length: '.strlen($this->postdata);
236 $request = implode("\r\n", $headers)."\r\n\r\n".$this->postdata;
239 function getStatus() {
240 return $this->status;
242 function getContent() {
243 return $this->content;
245 function getHeaders() {
246 return $this->headers;
248 function getHeader($header) {
249 $header = strtolower($header);
250 if (isset($this->headers[$header])) {
251 return $this->headers[$header];
256 function getError() {
257 return $this->errormsg;
259 function getCookies() {
260 return $this->cookies;
262 function getRequestURL() {
263 $url = 'http://'.$this->host;
264 if ($this->port != 80) {
265 $url .= ':'.$this->port;
271 function setUserAgent($string) {
272 $this->user_agent = $string;
274 function setAuthorization($username, $password) {
275 $this->username = $username;
276 $this->password = $password;
278 function setCookies($array) {
279 $this->cookies = $array;
281 // Option setting methods
282 function useGzip($boolean) {
283 $this->use_gzip = $boolean;
285 function setPersistCookies($boolean) {
286 $this->persist_cookies = $boolean;
288 function setPersistReferers($boolean) {
289 $this->persist_referers = $boolean;
291 function setHandleRedirects($boolean) {
292 $this->handle_redirects = $boolean;
294 function setMaxRedirects($num) {
295 $this->max_redirects = $num;
297 function setHeadersOnly($boolean) {
298 $this->headers_only = $boolean;
300 function setDebug($boolean) {
301 $this->debug = $boolean;
303 // "Quick" static methods
304 function quickGet($url) {
305 $bits = parse_url($url);
306 $host = $bits['host'];
307 $port = isset($bits['port']) ? $bits['port'] : 80;
308 $path = isset($bits['path']) ? $bits['path'] : '/';
309 if (isset($bits['query'])) {
310 $path .= '?'.$bits['query'];
312 $client = new HttpClient($host, $port);
313 if (!$client->get($path)) {
316 return $client->getContent();
319 function quickPost($url, $data) {
320 $bits = parse_url($url);
321 $host = $bits['host'];
322 $port = isset($bits['port']) ? $bits['port'] : 80;
323 $path = isset($bits['path']) ? $bits['path'] : '/';
324 $client = new HttpClient($host, $port);
325 if (!$client->post($path, $data)) {
328 return $client->getContent();
331 function debug($msg, $object = false) {
333 print '<div style="border: 1px solid red; padding: 0.5em; margin: 0.5em;"><strong>HttpClient Debug:</strong> '.$msg;
337 $content = htmlentities(ob_get_contents());
339 print '<pre>'.$content.'</pre>';
346 // $Log: not supported by cvs2svn $
347 // Revision 1.4 2004/04/12 18:15:28 rurban
356 // c-hanging-comment-ender-p: nil
357 // indent-tabs-mode: nil