Fix for class.tx_nG6_eid.php

There was a if( xxx = yyy) instead of a if( xxx == yyy) in
class.tx_nG6_eid.php .

PS: If asked, I will deny everything.

issue #151

ui/nG6/class.tx_nG6_eid.php

@@ -622,7 +622,53 @@ class tx_nG6_eid {
     		}
 
     	}
-    	
+    	else if ($type == 'check_ssh_user'){
+			$user_login = trim(\TYPO3\CMS\Core\Utility\GeneralUtility::_GP('user_login'));
+			$user_pwd = trim(\TYPO3\CMS\Core\Utility\GeneralUtility::_GP('user_pwd'));
+			$project_id = trim(\TYPO3\CMS\Core\Utility\GeneralUtility::_GP('project_id'));
+			
+			$path_to_check = tx_nG6_utils::get_project_data_save_dir($project_id);
+
+    		$res = 3;
+    		// check login and password
+    		if (isset($user_login) && isset($user_pwd) && $user_login != 'undefined' && $user_pwd != 'undefined') {
+				$ssh_command = 'touch '.$path_to_check.'/test ; rm -f '.$path_to_check.'/test' ;
+				$connection = ssh2_connect('127.0.0.1', 22);
+				
+    			if (!$connection) {
+    				//1st test, basic SSH connection
+    				$res = 3;
+    			} else if( !ssh2_auth_password($connection, $user_login,$user_pwd ) ){
+    				//2nd test, SSH connection with user + pwd
+    				$res = 2;
+    			}else{
+    				//3rd test, excuting the SSH command
+					$stream = ssh2_exec($connection, $ssh_command );
+    				$errorStream = ssh2_fetch_stream($stream, SSH2_STREAM_STDERR);
+    				// Enable blocking for both streams
+    				stream_set_blocking($errorStream, true);
+    				stream_set_blocking($stream, true);
+    				
+    				if(stream_get_contents($errorStream)) {
+    					// Close the streams
+    					fclose($errorStream);
+    					fclose($stream);
+    					$res = 4;
+    				}else{
+    					fclose($errorStream);
+    					fclose($stream);
+						$res = 0;
+    				}
+    			}
+	
+    		} else {
+    			//The user and/or password is missing
+    			$res = 3;
+    		}
+    		print $res;
+    		
+
+    	}
     	else if ( $type == 'add_to_ng6_admin'){
     		$userid = trim(\TYPO3\CMS\Core\Utility\GeneralUtility::_GP('userid'));
     		tx_nG6_db::add_to_ng6_admin($userid);