/**
* This class contains static helper functions for console applications
*
- * @author Roland Haeder <webmaster@ship-simu.org>
+ * @author Roland Haeder <webmaster@shipsimu.org>
* @version 0.0.0
- * @copyright Copyright (c) 2007, 2008 Roland Haeder, 2009, 2010 Core Developer Team
+ * @copyright Copyright (c) 2007, 2008 Roland Haeder, 2009 - 2014 Core Developer Team
* @license GNU GPL 3.0 or any newer version
- * @link http://www.ship-simu.org
+ * @link http://www.shipsimu.org
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
*/
protected function resolveIpAddress ($hostname) {
// Debug message
- $this->debugOutput(sprintf("[%s:] Our host name is: <span class=\"data\">%s</span>",
+ self::createDebugInstance(__CLASS__)->debugOutput(sprintf('[%s:] Host name to resolve is: %s',
$this->__toString(),
$hostname
));
$ipResolved = gethostbyname($hostname);
// Was it fine?
- if (($ipResolved !== false) && ($ipResolved != $hostname)) {
+ if (($ipResolved !== FALSE) && ($ipResolved != $hostname)) {
// Okay, this works!
$ip = $ipResolved;
// Debug message
- $this->debugOutput(sprintf("[%s:] Resolved IP address is: <span class=\"data\">%s</span>\n",
+ self::createDebugInstance(__CLASS__)->debugOutput(sprintf('[%s:] Resolved IP address is: %s',
$this->__toString(),
$ip
));
} else {
// Problem while resolving IP address
- $this->debugOutput(sprintf("[%s:] Problem resolving IP address for host <span class=\"data\">%s</span>. Please check your /etc/hosts file.",
+ self::createDebugInstance(__CLASS__)->debugOutput(sprintf('[%s:] Problem resolving IP address for host %s. Please check your /etc/hosts file.',
$this->__toString(),
$hostname
));
return $ip;
}
+ /**
+ * Checks wether proxy configuration is used
+ *
+ * @return $isUsed Wether proxy is used
+ */
+ protected function isProxyUsed () {
+ // Do we have cache?
+ if (!isset($GLOBALS[__METHOD__])) {
+ // Determine it
+ $GLOBALS[__METHOD__] = (($this->getConfigInstance()->getConfigEntry('proxy_host') != '') && ($this->getConfigInstance()->getConfigEntry('proxy_port') > 0));
+ } // END - if
+
+ // Return cache
+ return $GLOBALS[__METHOD__];
+ }
+
+ /**
+ * Sets up a proxy tunnel for given hostname and through resource
+ *
+ * @param $host Host to connect to
+ * @param $port Port number to connect to
+ * @param $socketResource Resource of a socket
+ * @return $response Response array
+ */
+ protected function setupProxyTunnel ($host, $port, $socketResource) {
+ // Initialize array
+ $response = array('', '', '');
+ $proxyTunnel = '';
+
+ // Generate CONNECT request header
+ $proxyTunnel .= 'CONNECT ' . $host . ':' . $port . ' HTTP/1.1' . self::HTTP_EOL;
+ $proxyTunnel .= 'Host: ' . $host . ':' . $port . self::HTTP_EOL;
+ $proxyTunnel .= 'Proxy-Connection: Keep-Alive' . self::HTTP_EOL;
+
+ // Use login data to proxy? (username at least!)
+ if ($this->getConfigInstance()->getConfigEntry('proxy_username') != '') {
+ // Add it as well
+ $encodedAuth = base64_encode($this->getConfigInstance()->getConfigEntry('proxy_username') . ':' . $this->getConfigInstance()->getConfigEntry('proxy_password'));
+ $proxyTunnel .= 'Proxy-Authorization: Basic ' . $encodedAuth . self::HTTP_EOL;
+ } // END - if
+
+ // Add last new-line
+ $proxyTunnel .= self::HTTP_EOL;
+ //* DEBUG: */ self::createDebugInstance(__CLASS__)->debugOutput('CONSOLE-TOOLS[' . __METHOD__ . ':' . __LINE__ . ']: proxyTunnel=' . $proxyTunnel);
+
+ // Write request
+ fwrite($socketResource, $proxyTunnel);
+
+ // Got response?
+ if (feof($socketResource)) {
+ // No response received
+ return $response;
+ } // END - if
+
+ // Read the first line
+ $resp = trim(fgets($socketResource, 10240));
+ $respArray = explode(' ', $resp);
+ if (((strtolower($respArray[0]) !== 'http/1.0') && (strtolower($respArray[0]) !== 'http/1.1')) || ($respArray[1] != '200')) {
+ // Invalid response!
+ return $response;
+ } // END - if
+
+ // All fine!
+ return $respArray;
+ }
+
+ /**
+ * Tried to extract hostname from given raw data. On a Genntoo system, this could be multiple lines with # as comments. So try to get rid of it
+ *
+ * @param $rawData Raw data from /etc/hostname file
+ * @return $hostname Extracted host name
+ */
+ protected function extractHostnameFromRawData ($rawData) {
+ // Default is invalid
+ $hostname = 'invalid';
+
+ // Try to "explode" it
+ $data = explode(PHP_EOL, $rawData);
+
+ // "Walk" through it
+ foreach ($data as $line) {
+ // Trim it
+ $line = trim($line);
+
+ // Begins with a hash (#) = comment?
+ if (substr($line, 0, 1) == '#') {
+ // Then skip it
+ continue;
+ } // END - if
+
+ // Has an equals sign?
+ if (strpos($line, '=') !== FALSE) {
+ // Then "explode" it again, right part is hostname in quotes
+ $hostData = explode('=', $line);
+
+ // Make sure only a key=value pair goes through
+ assert(count($hostData) == 2);
+
+ // Try to get it and abort
+ $hostname = str_replace(array('"', chr(39)), array('', ''), $hostData[1]);
+ break;
+ } else {
+ // Use it directly
+ $hostname = $line;
+ break;
+ }
+ } // END - foreach
+
+ // Return it
+ return $hostname;
+ }
+
/**
* Aquires the IP address of this host by reading the /etc/hostname file
* and solving it. It is now stored in configuration
*
- * @return void
+ * @return $ip Aquired IP address
*/
public static function acquireSelfIPAddress () {
// Local IP by default
try {
// Get a file pointer
- $io = FrameworkFileInputPointer::createFrameworkFileInputPointer('/etc/hostname');
+ $fileInstance = ObjectFactory::createObjectByConfiguredName('file_raw_input_class', array($helperInstance->getConfigInstance()->getConfigEntry('hostname_file')));
// Read the file
- $hostname = trim($io->readFromFile());
+ $rawData = trim($fileInstance->readFromFile());
// Close the file
- $io->closeFile();
+ $fileInstance->closeFile();
+
+ // Extract hostname from it
+ $hostname = $helperInstance->extractHostnameFromRawData($rawData);
// Resolve the IP number
$ip = $helperInstance->resolveIpAddress($hostname);
if (isset($_SERVER['SESSION_SVR'])) {
// Resolve it
$ip = $helperInstance->resolveIpAddress($_SERVER['SESSION_SVR']);
+ } elseif (isset($_SERVER['COMPUTERNAME'])) {
+ // May happen on some XP systems, so also try this
+ $ip = $helperInstance->resolveIpAddress($_SERVER['COMPUTERNAME']);
} else {
// Could not find our hostname
- $helperInstance->debugOutput(sprintf("[%s:] WARNING: Cannot resolve my own IP address.",
+ self::createDebugInstance(__CLASS__)->debugOutput(sprintf('[%s:] WARNING: Cannot resolve my own IP address.',
$helperInstance->__toString()
));
}
} catch (FrameworkException $e) {
// Output debug message
- $helperInstance->debugOutput(sprintf("[%s:] Problem while resolving own IP address: [%s|%s]:%s",
+ self::createDebugInstance(__CLASS__)->debugOutput(sprintf('[%s:] Problem while resolving own IP address: [%s|%s]:%s',
$helperInstance->__toString(),
$e->__toString(),
$e->getHexCode(),
}
// Set it in configuration
- FrameworkConfiguration::getInstance()->setServerAddress($ip);
+ FrameworkConfiguration::getSelfInstance()->setServerAddress($ip);
+
+ // Return it
+ return $ip;
}
/**
* 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.ship-simu.org which
- * should default to 217.172.186.31 and requesting /ip.php which does only
+ * 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.
*
* @return $externalAddress The determined external IP address
* @throws InvalidSocketException If socket initialization wents wrong or if an errors occurs
* @todo This should be moved out to an external class, e.g. HttpClient
+ * @todo Make IP, host name, port and script name configurable
*/
- public static function determineExternalIp () {
+ public static function determineExternalAddress () {
// Get helper instance
$helperInstance = new ConsoleTools();
// First get a socket
- $socket = fsockopen('217.172.186.31', 80, $errorNo, $errorStr, 5);
+ // @TODO Add some DNS caching here
+
+ // Open connection
+ if ($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($helperInstance, gettype($socket), $errorNo, $errorStr), BaseListener::EXCEPTION_INVALID_SOCKET);
+ throw new InvalidSocketException(array($helperInstance, $socketResource, $errorNo, $errorStr), BaseListener::EXCEPTION_INVALID_SOCKET);
} // END - if
// Prepare the GET request
- $request = 'GET /ip.php HTTP/1.0' . self::HTTP_EOL;
- $request .= 'Host: www.ship-simu.org' . self::HTTP_EOL;
+ $request = 'GET ' . ($helperInstance->isProxyUsed() === TRUE ? 'http://shipsimu.org' : '') . '/ip.php HTTP/1.0' . self::HTTP_EOL;
+ $request .= 'Host: shipsimu.org' . self::HTTP_EOL;
$request .= 'User-Agent: ' . self::HTTP_USER_AGENT . 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
$request .= self::HTTP_EOL;
// Send it to the socket
- fwrite($socket, $request);
+ fwrite($socketResource, $request);
// Init IP (this will always be the last line)
$externalAddress = 'invalid';
// And read the reply
- while (!feof($socket)) {
- $externalAddress = fgets($socket, 128);
+ 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($socket);
+ fclose($socketResource);
+
+
+ // Debug message
+ /* DEBUG: */ self::createDebugInstance(__CLASS__)->debugOutput('CONSOLE-TOOLS[' . __METHOD__ . ':' . __LINE__ . ']: Resolved external address: ' . $externalAddress);
// Return determined external IP
return $externalAddress;
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