/**
* Do an arbitrary HTTP action
*
* @throws HTTPMaxRedirectException
* @throws HTTPRequestException
* @throws HTTPResponseException
*
* @param string $method
* What method to use: `GET`, `POST`, `PROPPATCH`...
* @param string $url
* Where to send the request. A full URI: http://server.com/path/
* @param array $vars
* Query variables to send. An associative array with key/value pairs
* @param array $headers
* Additional request headers
* @param string $data
* Data to send as raw data in a SOAP call for instance
*
* @return HTTPResponse
*/
public function do_method($method, $uri, $vars = array(), $headers = array(), $data = null)
{
$host = null;
$port = null;
$path = null;
$query = null;
$body = null;
$sock = null;
$method = strtoupper($method);
if ($this->recursions >= $this->max_redirects) {
throw new HTTPMaxRedirectException("Redirect limit ({$this->max_redirects}) exceeded!");
}
$request = array();
// It's an assignment
if (!($request = parse_url($uri))) {
throw new HTTPRequestException("Bad URL ({$uri}) as argument");
}
if (!isset($request['host'])) {
throw new HTTPRequestException("Missing host in URL ({$uri}) argument");
}
$port = 0;
$protocol = isset($request['scheme']) ? $request['scheme'] : false;
if ($protocol != 'http') {
switch ($protocol) {
case 'https':
if (!isset($request['port'])) {
$port = 443;
}
break;
}
}
$host = $request['host'];
$query = isset($request['query']) ? $request['query'] : null;
if (!$port) {
$port = isset($request['port']) ? (int) $request['port'] : 80;
}
if (isset($request['user'])) {
$this->username = $request['user'];
}
if (isset($request['pass'])) {
$this->password = $request['pass'];
}
if (!empty($vars)) {
$query = http_build_query($vars);
}
//! Default the request path to root
$path = isset($request['path']) ? $request['path'] : '/';
$add_header = "";
if (!empty($headers)) {
$this->request_headers = $headers + $this->request_headers;
}
foreach ($this->request_headers as $key => $val) {
if (!is_string($key)) {
throw new HTTPRequestException("Malformed header, missing key.");
}
if (empty($val)) {
throw new HTTPRequestException("Malformed header, missing value " . "for key \"{$key}\"");
}
//! Due to a bug in PHP5.2?
if ($key == 'Accept-Encoding') {
continue;
}
$add_header .= "{$key}: {$val}\r\n";
}
if ($this->username && $this->password) {
$add_header .= "Authorization: Basic " . base64_encode($this->username . ':' . $this->password);
}
if ($this->cookie) {
$c = $this->cookie->create_header($port == 443, $host, $path);
if ($c !== false) {
$add_header .= $c;
}
}
switch ($method) {
case 'GET':
$path .= $query ? '?' . $query : '';
break;
case 'POST':
$body = empty($data) ? $query : urlencode($data);
if (!isset($this->headers['Content-Type'])) {
$add_header .= "Content-Type: application/x-www-form-urlencoded\r\n";
}
$add_header .= "Content-Length: " . strlen($body) . "\r\n\r\n" . $body;
break;
default:
$body = $data;
if (!isset($this->headers['Content-Type'])) {
$add_header .= "Content-Type: text/plain\r\n";
}
$add_header .= "Content-Length: " . strlen($body) . "\r\n\r\n" . $body;
break;
}
$header = "{$method} {$path} HTTP/{$this->version}\r\n" . "Host: {$host}\r\n{$add_header}\r\n";
// print ($header);
$rawresponse = false;
if ($this->cache > 0) {
$rawresponse = $this->get_cache($header);
}
if ($rawresponse === false) {
$errno = 0;
$errstr = null;
$proto = 'tcp';
switch ($protocol) {
case 'https':
$proto = 'ssl';
break;
case 'ftp':
$proto = 'ftp';
break;
}
//echo "+ Request: $proto://$host:$port$path\n";
if (!($sock = @stream_socket_client("{$proto}://{$host}:{$port}", $errno, $errstr, $this->timeout))) {
$m = "Couldn't fetch {$host}! {$errstr} (errno: {$errno})";
throw new HTTPRequestException($m);
}
if (!is_resource($sock)) {
throw new HTTPRequestException("Couldn't connect to {$host}");
}
fputs($sock, $header);
$rawresponse = "";
while (!feof($sock)) {
$rawresponse .= fgets($sock, 512);
}
} else {
$rawresponse = file_get_contents($rawresponse);
}
$resp = new HTTPResponse($rawresponse);
$cookie = null;
// It's an assignment
if ($this->cookie && ($cookie = $resp->get_header('set-cookie'))) {
$this->cookie->set($host, $cookie);
}
$status = $resp->status();
if ($status != 200) {
//print_r ($resp);
if ($status == 302 || $status == 301) {
$location = $resp->get_header('location');
if ($location != $path && !strpos($location, '://')) {
$url = $protocol . "://" . $host . $location;
} else {
$url = $location;
}
$headers["Referer"] = $url;
if ($cookie) {
$headers["Cookie"] = $cookie;
}
$this->recursions++;
$vars = array();
//print_r ($headers);
return $this->do_method($method, $url, $vars, $headers, $data);
}
}
if ($this->cache > 0) {
$this->write_cache($header, $rawresponse, $resp->status());
}
$this->recursions = 0;
return $resp;
}