Added new CSV file abstraction class which is now a stub and needs expansion.

[core.git] / inc / classes / main / client / http / class_HttpClient.ph

diff --git a/inc/classes/main/client/http/class_HttpClient.ph b/inc/classes/main/client/http/class_HttpClient.ph
new file mode 100644 (file)
index 0000000..c753d2d
--- /dev/null
+++ b/inc/classes/main/client/http/class_HttpClient.ph
@@ -0,0 +1,96 @@
+
+       /**
+        * Determines own remote IP address (e.g. can be used to probe if we are
+        * reachable from outside by determining external IP and then connect to it.
+        * This is accomblished by connecting to the IP of www.shipsimu.org which
+        * should default to 188.138.90.169 and requesting /ip.php which does only
+        * return the content of $_SERVER['REMOTE_ADDR']. Of course, this method
+        * requires a working Internet connection.
+        *
+        * This method is taken from a user comment on php.net and heavily rewritten.
+        * Compare to following link:
+        * http://de.php.net/manual/en/function.socket-create.php#49368
+        *
+        * @return      $externalAddress        The determined external IP address
+        * @todo        Make IP, host name, port and script name configurable
+        */
+       public static function determineExternalIp () {
+               // Get helper instance
+               $helperInstance = new ConsoleTools();
+
+               // First get a socket
+               // @TODO Add some DNS caching here
+
+               // Open connection
+               if ($helperInstance->isProxyUsed() === TRUE) {
+                       // Resolve hostname into IP address
+                       $ip = $helperInstance->resolveIpAddress($helperInstance->getConfigInstance()->getConfigEntry('proxy_host'));
+
+                       // Connect to host through proxy connection
+                       $socketResource = fsockopen($ip, $helperInstance->getConfigInstance()->getConfigEntry('proxy_port'), $errorNo, $errorStr, 30);
+               } else {
+                       // Connect to host directly
+                       $socketResource = fsockopen('188.138.90.169', 80, $errorNo, $errorStr, 30);
+               }
+
+               // Check if there was an error else
+               if ($errorNo > 0) {
+                       // Then throw again
+                       throw new InvalidSocketException(array($helperInstance, $socketResource, $errorNo, $errorStr), BaseListener::EXCEPTION_INVALID_SOCKET);
+               } // END - if
+
+               // Prepare the GET request
+               $request  = 'GET ' . ($helperInstance->isProxyUsed() === TRUE ? 'http://shipsimu.org' : '') . '/ip.php HTTP/1.0' . self::HTTP_EOL;
+               $request .= 'Host: shipsimu.org' . self::HTTP_EOL;
+               $request .= 'User-Agent: ' . $this->getUserAgent() . self::HTTP_EOL;
+               $request .= 'Connection: close' . self::HTTP_EOL;
+
+               // Do we use proxy?
+               if ($helperInstance->isProxyUsed() === TRUE) {
+                       // CONNECT method?
+                       if ($helperInstance->getConfigInstance()->getConfigEntry('proxy_connect_method') == 'Y') {
+                               // Setup proxy tunnel
+                               $response = $helperInstance->setupProxyTunnel('shipsimu.org', 80, $socketResource);
+
+                               // If the response is invalid, abort
+                               if ((count($response) == 3) && (empty($response[0])) && (empty($response[1])) && (empty($response[2]))) {
+                                       // Invalid response!
+                                       $helperInstance->debugBackTrace('Proxy tunnel not working: response=' . print_r($response, TRUE));
+                               } // END - if
+                       } else {
+                               // Add header for proxy
+                               $request .= 'Proxy-Connection: Keep-Alive' . self::HTTP_EOL;
+                       }
+               } // END - if
+
+               // Add last HTTP_EOL
+               $request .= self::HTTP_EOL;
+
+               // Send it to the socket
+               fwrite($socketResource, $request);
+
+               // Init IP (this will always be the last line)
+               $externalAddress = 'invalid';
+
+               // And read the reply
+               while (!feof($socketResource)) {
+                       // Get line
+                       $externalAddress = trim(fgets($socketResource, 128));
+
+                       // Detect HTTP response
+                       if ((substr($externalAddress, 0, 7) == 'HTTP/1.') && (substr($externalAddress, -6, 6) != '200 OK')) {
+                               // Stop processing
+                               break;
+                       } // END - if
+               } // END - while
+
+               // Close socket
+               fclose($socketResource);
+
+
+               // Debug message
+               /* DEBUG: */ self::createDebugInstance(__CLASS__)->debugOutput('CONSOLE-TOOLS[' . __METHOD__ . ':' . __LINE__ . ']: Resolved external address: ' . $externalAddress);
+
+               // Return determined external IP
+               return $externalAddress;
+       }