Created File* backends

composer.lock

@@ -22,7 +22,7 @@
             "require-dev": {
                 "symfony/finder": "2.1.*"
             },
-            "time": "2012-09-01 01:02:36",
+            "time": "2012-09-01 07:02:36",
             "type": "library",
             "extra": {
                 "branch-alias": {
@@ -69,7 +69,7 @@
             "require": {
                 "php": ">=5.3.3"
             },
-            "time": "2012-09-18 12:09:52",
+            "time": "2012-09-18 16:09:52",
             "type": "library",
             "extra": {
                 "branch-alias": {
@@ -128,7 +128,7 @@
                 "symfony/yaml": "2.1.*",
                 "doctrine/common": ">=2.2,<2.4-dev"
             },
-            "time": "2012-09-10 08:53:42",
+            "time": "2012-09-10 10:53:42",
             "type": "library",
             "extra": {
                 "branch-alias": {

json_sms.php

@@ -10,9 +10,9 @@ use Symfony\Component\Routing\Matcher\UrlMatcher;
 use Symfony\Component\Routing\Exception\ResourceNotFoundException;
 use Symfony\Component\Routing\Exception\MethodNotAllowedException;
 
-use SmsGateway\Sender\GnokiiSender;
-use SmsGateway\Logger\DatabaseLogger;
-use SmsGateway\Backend\DatabaseBackend;
+use SmsGateway\Sender\FileSender;
+use SmsGateway\Logger\FileLogger;
+use SmsGateway\Auth\FileAuth;
 use SmsGateway\RpcServer;
 
 $request = Request::createFromGlobals();
@@ -56,7 +56,7 @@ if (!array_key_exists('method', $jsonData) || !array_key_exists('params', $jsonD
 $wantResponse = (!empty($jsonData['id']));
 
 try {
-    $sender = new GnokiiSender();
+    $sender = new FileSender('/var/www/html/smsgateway/app/cache/sms_spool');
 } catch (Exception $e) {
     $response = new Response('Internal Server Error: Sender cannot be instantiated.', 500);
     $response->send();
@@ -64,22 +64,26 @@ try {
 }
 
 try {
-    $logger = new DatabaseLogger('pgsql:host=127.0.0.1;dbname=smsgateway', 'smsgateway', 'Imuiwai8');
-} catch (PDOException $e) {
+    $logger = new FileLogger('/var/www/html/smsgateway/app/logs/sms-message.log', '/var/www/html/smsgateway/app/logs/sms-audit.log');
+} catch (LogicException $e) {
     $response = new Response('Internal Server Error: Logger cannot be instantiated.', 500);
     $response->send();
     exit;
 }
 
 try {
-    $backend = new DatabaseBackend();
+    $auth = new FileAuth('/var/www/html/smsgateway/senders', '/var/www/html/smsgateway/app/cache/tokens');
 } catch (Exception $e) {
-    $response = new Response('Internal Server Error: Backend cannot be instantiated.', 500);
+    $response = new Response('Internal Server Error: Authenticator cannot be instantiated.', 500);
     $response->send();
     exit;
 }
 
-$handler = new RpcServer($backend, $logger, $sender);
+$auth->setLogger($logger);
+$sender->setLogger($logger);
+
+$handler = new RpcServer($auth, $logger, $sender);
+
 try {
     $result = $handler->handle($request, $jsonData);
 } catch (Exception $e) {

src/SmsGateway/Auth/DatabaseAuth.php

@@ -1,7 +1,8 @@
 <?php
-namespace SmsGateway\Backend;
+namespace SmsGateway\Auth;
 
 use SmsGateway\AuthInterface;
+use SmsGateway\LoggerInterface;
 
 class DatabaseAuth implements AuthInterface
 {

src/SmsGateway/Auth/FileAuth.php

@@ -0,0 +1,142 @@
+<?php
+namespace SmsGateway\Auth;
+
+use SmsGateway\AuthInterface;
+use SmsGateway\LoggerInterface;
+
+/**
+ * Description of FileAuth
+ *
+ * @author Gergely Polonkai
+ */
+class FileAuth implements AuthInterface
+{
+    private $logger;
+
+    private $sendersFile;
+
+    private $tokenFile;
+
+    public function __construct($sendersFile, $tokenFile) {
+        if ($sendersFile == null) {
+            throw new \InvalidArgumentException('A senders file path must be passed to the authenticator!');
+        }
+
+        if (!is_readable($sendersFile)) {
+            throw new \RuntimeException('senders file not readable!');
+        }
+
+        if ($tokenFile == null) {
+            throw new \InvalidArgumentException('A token file path must be passed to the authenticator!');
+        }
+
+        if (
+            (
+                file_exists($tokenFile)
+                && !is_writable($tokenFile)
+            )
+            || (
+                !file_exists($tokenFile)
+                && !is_writable(dirname($tokenFile))
+            )
+        ) {
+            throw new \RuntimeException('Token file is not writable!');
+        }
+
+        $this->sendersFile = $sendersFile;
+        $this->tokenFile = $tokenFile;
+    }
+
+    public function authenticate($username, $password, $ip, $sessionId)
+    {
+        $this->logger->auditLog(LoggerInterface::LOG_AUDIT_LOGIN, $username, "trying to authenticate");
+        $lines = file($this->sendersFile);
+        foreach ($lines as $line) {
+            list($user, $cPassword) = explode(':', trim($line), 2);
+            if ($user == $username) {
+                if (crypt($password, $cPassword) == $cPassword) {
+                    $this->logger->auditLog(LoggerInterface::LOG_AUDIT_LOGIN, $username, "authenticated successfully");
+
+                    return $this->getToken($username, $ip, $sessionId);
+                } else {
+                    $this->logger->auditLog(LoggerInterface::LOG_AUDIT_LOGIN, $username, "authentication failed: bad password");
+                    return false;
+                }
+            }
+        }
+        return false;
+    }
+
+    public function getTokenUsername($token, $ip, $sessionId)
+    {
+        $lines = file($this->tokenFile);
+        foreach ($lines as $line) {
+            list($tokenUser, $tokenIp, $tokenSession, $tokenToken) = explode(':', trim($line), 4);
+            if (($tokenToken == $token) && ($tokenIp == $ip) && ($tokenSession == $sessionId)) {
+                return $tokenUser;
+            }
+        }
+
+        return null;
+    }
+
+    public function isTokenValid($token, $ip, $sessionId)
+    {
+        $this->logger->auditLog(LoggerInterface::LOG_AUDIT_LOGIN, null, 'Checking token validity');
+
+        $lines = file($this->tokenFile);
+        foreach ($lines as $line) {
+            list($tokenUser, $tokenIp, $tokenSession, $tokenToken) = explode(':', trim($line), 4);
+            if (($tokenToken == $token) && ($tokenIp == $ip) && ($tokenSession == $sessionId)) {
+                return true;
+            }
+        }
+
+        return false;
+    }
+
+    public function getToken($username, $ip, $sessionId) {
+        $this->logger->auditLog(LoggerInterface::LOG_AUDIT_LOGIN, $username, "Getting token");
+
+        $lines = file($this->tokenFile);
+        foreach ($lines as $line) {
+            list($tokenUser, $tokenIp, $tokenSession, $tokenToken) = explode(':', trim($line), 4);
+            if (($tokenUser == $username) && ($tokenIp == $ip) && ($tokenSession == $sessionId)) {
+                return $tokenToken;
+            }
+        }
+
+        $token = str_replace(':', '', uniqid('', true));
+        $fd = fopen($this->tokenFile, 'a');
+        fwrite($fd, sprintf("%s:%s:%s:%s\n", $username, $ip, $sessionId, $token));
+        fclose($fd);
+
+        return $token;
+    }
+
+    public function removeToken($token, $ip, $sessionId) {
+        $username = $this->getTokenUsername($token, $ip, $sessionId);
+        $this->logger->auditLog(LoggerInterface::LOG_AUDIT_LOGIN, $username, "Removing token");
+
+        $lines = file($this->tokenFile);
+        $fd = fopen($this->tokenFile, 'w');
+        foreach ($lines as $line) {
+            list($tokenUser, $tokenIp, $tokenSession, $tokenToken) = explode(':', trim($line), 4);
+            if (($tokenToken != $token) || ($tokenIp != $ip) || ($tokenSession != $sessionId)) {
+                fwrite($fd, sprintf("%s:%s:%s:%s\n", $tokenUser, $tokenIp, $tokenSession, $tokenToken));
+            }
+        }
+        fclose($fd);
+
+        return false;
+        return true;
+    }
+
+    public function getLogger() {
+        return $this->logger;
+    }
+
+    public function setLogger(LoggerInterface $logger) {
+        $this->logger = $logger;
+    }
+}

src/SmsGateway/AuthInterface.php

@@ -9,9 +9,13 @@ interface AuthInterface
 
     public function getLogger();
 
+    public function authenticate($username, $password, $ip, $sessionId);
+
     public function getToken($username, $ip, $sessionId);
 
     public function isTokenValid($token, $ip, $sessionId);
 
     public function removeToken($token, $ip, $sessionId);
+
+    public function getTokenUsername($token, $ip, $sessionId);
 }

src/SmsGateway/Logger/FileLogger.php

@@ -0,0 +1,130 @@
+<?php
+namespace SmsGateway\Logger;
+
+use SmsGateway\LoggerInterface;
+
+/**
+ * Description of FileLogger
+ *
+ * @author Gergely Polonkai
+ */
+class FileLogger implements LoggerInterface
+{
+    const PASSWORD_MASK = '[password]';
+
+    /**
+     * The message log file
+     *
+     * @var resource $messageLogHandle
+     */
+    private $messageLogHandle;
+
+    /**
+     * The audit log file
+     *
+     * @var resource $auditLogHandle
+     */
+    private $auditLogHandle;
+
+    /**
+     * 
+     * @param string $messageLogFile Name of the message log file
+     * @param string $auditLogFile   Name of the audit log file
+     * @throws \LogicException       Upon file opening error
+     */
+    public function __construct($messageLogFile, $auditLogFile)
+    {
+        if ($messageLogFile == null) {
+            throw new \LogicException('Message log file can not be null!');
+        }
+
+        if ($auditLogFile == null) {
+            throw new \LogicException('Audit log file can not be null!');
+        }
+
+        if (
+            (
+                file_exists($messageLogFile)
+                && !is_writable($messageLogFile)
+            )
+            || (
+                !file_exists($messageLogFile)
+                && !is_writable(dirname($messageLogFile))
+            )
+        ) {
+            throw new \LogicException('Message log file is not writable!');
+        }
+
+        if (
+            (
+                file_exists($auditLogFile)
+                && !is_writable($auditLogFile)
+            )
+            || (
+                !file_exists($auditLogFile)
+                && !is_writable(dirname($auditLogFile))
+            )
+        ) {
+            throw new \LogicException('Audit log file is not writable!');
+        }
+
+        if (($this->messageLogHandle = fopen($messageLogFile, 'a')) === false) {
+            throw new \LogicException('Message log file could not be opened!');
+        }
+
+        if (($this->auditLogHandle = fopen($auditLogFile, 'a')) === false) {
+            throw new \LogicException('Audit log file could not be opened!');
+        }
+    }
+
+    public function __destruct() {
+        fclose($this->messageLogHandle);
+        fclose($this->auditLogHandle);
+    }
+
+    private function orderPasswordLocations($a, $b)
+    {
+        if ($a[0] == $b[0]) {
+            return 0;
+        } elseif ($a[0] < $b[0]) {
+            return -1;
+        }
+        return 1;
+    }
+
+    public function messageLog($username, $recipient, $message, array $passwordLocations)
+    {
+        usort($passwordLocations, array($this, 'orderPasswordLocations'));
+
+        $encodedMessage = $message;
+        $mod = 0;
+        foreach ($passwordLocations as $loc) {
+            list($pos, $length) = $loc;
+
+            $encodedMessage = substr_replace($encodedMessage, self::PASSWORD_MASK, $pos + $mod, $length);
+            $mod += (strlen(self::PASSWORD_MASK) - $length);
+        }
+
+        $logMessage = "From $username
+From: $username
+To: $recipient
+
+$encodedMessage\n\n";
+
+        fwrite($this->messageLogHandle, $logMessage);
+        fflush($this->messageLogHandle);
+        return true;
+    }
+
+    public function auditLog($type, $username, $message)
+    {
+        if ($username === null) {
+            $logMessage = "$message\n";
+        } else {
+            $logMessage = "$username: $message\n";
+        }
+        fwrite($this->auditLogHandle, $logMessage);
+        fflush($this->auditLogHandle);
+        return true;
+    }
+}

src/SmsGateway/LoggerInterface.php

@@ -3,7 +3,7 @@ namespace SmsGateway;
 
 interface LoggerInterface
 {
-    const SMSSENDER_AUDIT_LOGIN = 1;
+    const LOG_AUDIT_LOGIN = 1;
 
     /**
      * Log an audit event
@@ -23,5 +23,5 @@ interface LoggerInterface
      * @param string  $recipient The recipient of the message
      * @param string  $message   The message itself
      */
-    public function messageLog($username, $recipient, $message);
+    public function messageLog($username, $recipient, $message, array $passwordLocations);
 }

src/SmsGateway/RpcServer.php

@@ -3,7 +3,7 @@ namespace SmsGateway;
 
 use Symfony\Component\HttpFoundation\Request;
 
-use SmsGateway\BackendInterface;
+use SmsGateway\AuthInterface;
 use SmsGateway\LoggerInterface;
 use SmsGateway\SenderInterface;
 
@@ -12,9 +12,9 @@ class RpcServer
     /**
      * The user backend
      *
-     * @var SmsGateway\BackendInterface $backend
+     * @var SmsGateway\AuthInterface $backend
      */
-    private $backend;
+    private $auth;
 
     /**
      * The logger
@@ -30,23 +30,46 @@ class RpcServer
      */
     private $sender;
 
-    public function __construct(BackendInterface $backend, LoggerInterface $logger, SenderInterface $sender)
+    public function __construct(AuthInterface $auth, LoggerInterface $logger, SenderInterface $sender)
     {
+        $this->auth = $auth;
+        $this->logger = $logger;
+        $this->sender = $sender;
     }
 
-    protected function login(array $params)
+    protected function login($username, $password)
     {
-        return true;
+        $token = $this->auth->authenticate($username, $password, $_SERVER['REMOTE_ADDR'], null);
+
+        if ($token === false) {
+            throw new \Exception('Could not create token.');
+        }
+
+        return $token;
     }
 
-    protected function send(array $params)
+    protected function send($token, $recipient, $message, array $passwordLocations)
     {
-        return true;
+        if (!$this->auth->isTokenValid($token, $_SERVER['REMOTE_ADDR'], null)) {
+            throw new \Exception('Invalid token!');
+        }
+
+        $this->sender->send($this->auth->getTokenUsername($token, $_SERVER['REMOTE_ADDR'], null), $recipient, $message, $passwordLocations);
+
+        // TODO: Send the message!
+
+        return 'success';
     }
 
-    protected function logout(array $params)
+    protected function logout($token)
     {
-        return true;
+        if (!$this->auth->isTokenValid($token, $_SERVER['REMOTE_ADDR'], null)) {
+            throw new \Exception('Invalid token!');
+        }
+
+        $this->auth->removeToken($token, $_SERVER['REMOTE_ADDR'], null);
+
+        return 'success';
     }
 
     public function handle(Request $request, array $jsonData)
@@ -54,14 +77,34 @@ class RpcServer
         $params = $jsonData['params'];
         switch ($jsonData['method']) {
             case 'login':
+                if (count($params) != 2) {
+                    throw new \InvalidArgumentException('Bad parameter count!');
+                }
+
+                return $this->login($params[0], $params[1]);
+
                 break;
             case 'send':
+                if (count($params) != 4) {
+                    throw new \InvalidArgumentException('Bad parameter count!');
+                }
+                if (!is_array($params[3])) {
+                    throw new \InvalidArgumentException('Invalid 4th parameter!');
+                }
+
+                return $this->send($params[0], $params[1], $params[2], $params[3]);
+
                 break;
             case 'logout':
+                if (count($params) != 1) {
+                    throw new \InvalidArgumentException('Bad parameter count!');
+                }
+
+                return $this->logout($params[0]);
                 break;
             default:
-                    throw new \Exception('Invalid request');
+                throw new \BadMethodCallException('Unknown method ' . $jsonData['method']);
+                break;
         }
-        return 'ajaj';
     }
 }

src/SmsGateway/Sender/FileSender.php

@@ -0,0 +1,74 @@
+<?php
+namespace SmsGateway\Sender;
+
+use SmsGateway\SenderInterface;
+use SmsGateway\LoggerInterface;
+
+/**
+ * Description of FileSender
+ *
+ * @author Gergely Polonkai
+ */
+class FileSender implements SenderInterface
+{
+    private $messageDir;
+
+    /**
+     * @var SmsGateway\LoggerInterface $logger
+     */
+    private $logger;
+
+    public function __construct($messageDir)
+    {
+        if (file_exists($messageDir) && !is_dir($messageDir)) {
+            throw new \InvalidArgumentException('Message directory specified is not a directory!');
+        }
+
+        if (!file_exists($messageDir) && !is_writable(dirname($messageDir))) {
+            throw new \RuntimeException('Message directory cannot be created');
+        }
+
+        if (!file_exists($messageDir)) {
+            mkdir($messageDir, 0777, true);
+        }
+
+        if (!is_writable($messageDir)) {
+            throw new \RuntimeException('Message directory is not writable!');
+        }
+
+        $this->messageDir = $messageDir;
+    }
+
+    public function setLogger(LoggerInterface $logger) {
+        if ($logger === null) {
+            throw new \InvalidArgumentException('A logger must be passed to the authenticator!');
+        }
+
+        $this->logger = $logger;
+    }
+
+    public function getLogger() {
+        return $this->logger;
+    }
+
+    public function send($username, $recipient, $message, $passwordLocations)
+    {
+        $rcptDir = $this->messageDir . '/' . $recipient;
+
+        if (file_exists($rcptDir) && (!is_writable($rcptDir) || !is_dir($rcptDir))) {
+            throw new \RuntimeException('Message directory is not writable!');
+        }
+        if (!file_exists($rcptDir)) {
+            mkdir($rcptDir);
+        }
+
+        $messageFileName = date('YmdHis') . '-' . uniqid() . '.sms';
+        $fd = fopen($rcptDir . '/' . $messageFileName, 'w');
+        fwrite($fd, $message);
+        fclose($fd);
+
+        $this->logger->messageLog($username, $recipient, $message, $passwordLocations);
+
+        return true;
+    }
+}

src/SmsGateway/SenderInterface.php

@@ -3,6 +3,10 @@ namespace SmsGateway;
 
 interface SenderInterface
 {
+    public function setLogger(LoggerInterface $logger);
+
+    public function getLogger();
+
     /**
      *
      * @param  string $recipient
@@ -10,5 +14,6 @@ interface SenderInterface
      * @return boolean           true upon success. On error, throws exceptions.
      * @throws Exception         Upon sending error. Gnokii output will be
      *                           stored in $e->message
-    public function send($recipient, $message);
+     */
+    public function send($username, $recipient, $message, $passwordLocations);
 }