Merge branch 'refs/heads/feature/resource' into develop

.gitignore

@@ -0,0 +1,3 @@
+/vendor/
+/composer.lock
+/docs/build/

build/phpunit.xml

@@ -8,9 +8,12 @@
 	stopOnIncomplete="false"
 	stopOnSkipped="false">
 	<testsuites>
-		<testsuite name="Test Suite">
+		<testsuite name="Authentication Server">
 			<directory suffix="test.php">../tests/authentication</directory>
 		</testsuite>
+		<testsuite name="Resource Server">
+			<directory suffix="test.php">../tests/resource</directory>
+		</testsuite>
 	</testsuites>
 	<filters>
 		<blacklist>
@@ -19,11 +22,8 @@
 		</blacklist>
 	</filters>
 	<logging>
-	<log type="coverage-html" target="coverage" title="lncd/OAuth"
-	  charset="UTF-8" yui="true" highlight="true"
-	  lowUpperBound="35" highLowerBound="70"/>
+	<log type="coverage-html" target="coverage" title="lncd/OAuth" charset="UTF-8" yui="true" highlight="true" lowUpperBound="35" highLowerBound="70"/>
 	<log type="coverage-clover" target="logs/clover.xml"/>
-	<log type="junit" target="logs/junit.xml"
-	  logIncompleteSkipped="false"/>
+	<log type="junit" target="logs/junit.xml" logIncompleteSkipped="false"/>
 	</logging>
 </phpunit>

src/Oauth2/Authentication/Server.php

@@ -513,6 +513,6 @@ class Server
         unset($args[0]);
         $params = array_values($args);
 
-        return call_user_func_array(array($this->db, $method), $args);
+        return call_user_func_array(array($this->db, $method), $params);
     }
 }

src/Oauth2/Resource/Database.php

@@ -4,4 +4,56 @@ namespace Oauth2\Resource;
 
 interface Database
 {
+    /**
+     * Validate an access token and return the session details.
+     * 
+     * Database query:
+     * 
+     * <code>
+     * SELECT id, owner_type, owner_id FROM oauth_sessions WHERE access_token =
+     *  $accessToken AND stage = 'granted' AND
+     *  access_token_expires > UNIX_TIMESTAMP(now())
+     * </code>
+     * 
+     * Response:
+     * 
+     * <code>
+     * Array
+     * (
+     *     [id] => (int) The session ID
+     *     [owner_type] => (string) The session owner type
+     *     [owner_id] => (string) The session owner's ID
+     * )
+     * </code>
+     * 
+     * @param  string     $accessToken The access token
+     * @return array|bool              Return an array on success or false on failure
+     */
+    public function validateAccessToken($accessToken);
+
+    /**
+     * Returns the scopes that the session is authorised with.
+     * 
+     * Database query:
+     * 
+     * <code>
+     * SELECT scope FROM oauth_session_scopes WHERE access_token =
+     *  '291dca1c74900f5f252de351e0105aa3fc91b90b'
+     * </code>
+     * 
+     * Response:
+     * 
+     * <code>
+     * Array
+     * (
+     *      [0] => (string) A scope
+     *      [1] => (string) Another scope
+     *      ...
+     * )
+     * </code>
+     * 
+     * @param  int   $sessionId The session ID
+     * @return array            A list of scopes
+     */
+    public function sessionScopes($sessionId);
 }

src/Oauth2/Resource/Server.php

@@ -2,7 +2,223 @@
 
 namespace Oauth2\Resource;
 
+class OAuthResourceServerException extends \Exception
+{
+
+}
+
 class Server
 {
+    /**
+     * Reference to the database abstractor
+     * @var object
+     */
+    private $_db = null;
+
+    /**
+     * The access token.
+     * @access private
+     */
+    private $_accessToken = null;
+
+    /**
+     * The scopes the access token has access to.
+     * @access private
+     */
+    private $_scopes = array();
+
+    /**
+     * The type of owner of the access token.
+     * @access private
+     */
+    private $_type = null;
+
+    /**
+     * The ID of the owner of the access token.
+     * @access private
+     */
+    private $_typeId = null;
+
+    /**
+     * Server configuration
+     * @var array
+     */
+    private $_config = array(
+        'token_key' =>  'oauth_token'
+    );
+
+    /**
+     * Error codes.
+     * 
+     * To provide i8ln errors just overwrite the keys
+     * 
+     * @var array
+     */
+    public $errors = array(
+        'missing_access_token'  =>  'An access token was not presented with the request',
+        'invalid_access_token'  =>  'The access token is not registered with the resource server'
+    );
+
+    /**
+     * Constructor
+     * 
+     * @access public
+     * @return void
+     */
+    public function __construct($options = null)
+    {
+        if ($options !== null) {
+            $this->config = array_merge($this->config, $options);
+        }
+    }
+
+    /**
+     * Magic method to test if access token represents a particular owner type
+     * @param  string $method     The method name
+     * @param  mixed  $arguements The method arguements
+     * @return bool               If method is valid, and access token is owned by the requested party then true,
+     */
+    public function __call($method, $arguements = null)
+    {
+        if (substr($method, 0, 2) === 'is') {
+
+            if ($this->_type === strtolower(substr($method, 2))) {
+                return $this->_typeId;
+            }
+            
+            return false;
+        }
+
+        trigger_error('Call to undefined function ' . $method . '()');
+    }
+
+    /**
+     * Register a database abstrator class
+     * 
+     * @access public
+     * @param  object $db A class that implements OAuth2ServerDatabase
+     * @return void
+     */
+    public function registerDbAbstractor($db)
+    {
+        $this->_db = $db;
+    }
     
+    /**
+     * Init function
+     * 
+     * @access public
+     * @return void
+     */
+    public function init()
+    {
+        $accessToken = null;
+
+        // Try and get the access token via an access_token or oauth_token parameter
+        switch ($server['REQUEST_METHOD'])
+        {           
+            case 'POST':
+                $accessToken = isset($_POST[$this->_config['token_key']]) ? $_POST[$this->_config['token_key']] : null;
+                break;
+
+            default:
+            $accessToken = isset($_GET[$this->_config['token_key']]) ? $_GET[$this->_config['token_key']] : null;
+                break;
+        }
+
+        // Try and get an access token from the auth header
+        $headers = getallheaders();
+        if (isset($headers['Authorization'])) {
+
+            $rawToken = trim(str_replace('Bearer', '', $headers['Authorization']));
+            if ( ! empty($rawToken))
+            {
+                $accessToken = base64_decode($rawToken);
+            }
+        }
+        
+        if ($accessToken) {
+
+            $result = $this->_dbCall('validateAccessToken', array($accessToken));
+
+            if ($result === false)
+            {
+                throw new OAuthResourceServerException($this->errors['invalid_access_token']);
+            }
+
+            else
+            {
+                $this->_accessToken = $accessToken;
+                $this->_type = $result['owner_type'];
+                $this->_typeId = $result['owner_id'];
+
+                // Get the scopes
+                $this->_scopes = $this->_dbCall('sessionScopes', array($result['id']));
+            }
+
+        } else  {
+
+            throw new OAuthResourceServerException($this->errors['missing_access_token']);
+
+        }
+    }
+    
+    /**
+     * Test if the access token has a specific scope
+     * 
+     * @param mixed $scopes Scope(s) to check
+     * 
+     * @access public
+     * @return string|bool
+     */
+    public function hasScope($scopes)
+    {
+        if (is_string($scopes))
+        {
+            if (in_array($scopes, $this->_scopes))
+            {
+                return true;
+            }
+            
+            return false;
+        }
+        
+        elseif (is_array($scopes))
+        {
+            foreach ($scopes as $scope)
+            {
+                if ( ! in_array($scope, $this->_scopes))
+                {
+                    return false;
+                }
+            }
+            
+            return true;
+        }
+        
+        return false;
+    }
+
+    /**
+     * Call database methods from the abstractor
+     * 
+     * @return mixed The query result
+     */
+    private function _dbCall()
+    {
+        if ($this->_db === null) {
+            throw new OAuthResourceServerException('No registered database abstractor');
+        }
+
+        if ( ! $this->_db instanceof Database) {
+            throw new OAuthResourceServerException('Registered database abstractor is not an instance of Oauth2\Resource\Database');
+        }
+
+        $args = func_get_args();
+        $method = $args[0];
+        unset($args[0]);
+        $params = array_values($args);
+
+        return call_user_func_array(array($this->_db, $method), $params);
+    }
 }

tests/resource/database_mock.php

@@ -0,0 +1,29 @@
+<?php
+
+use Oauth2\Resource\Server;
+
+class ResourceDB implements Database
+{
+	private $accessTokens = array('test12345' => array(
+		'id'	=>	1,
+		'owner_type'	=>	'user',
+		'owner_id'	=>	123
+	));
+
+	private $sessionScopes = array(
+		1	=>	array(
+			'foo',
+			'bar'
+		)
+	);
+
+	public function validateAccessToken($accessToken)
+	{
+		return (isset($this->accessTokens[$accessToken])) ? $this->accessTokens[$accessToken] : false;
+	}
+
+	public function sessionScopes($sessionId)
+	{
+		return (isset($this->sessionScopes[$sessionId])) ? $this->sessionScopes[$sessionId] : array();
+	}
+}

tests/resource/server_test.php

@@ -0,0 +1,77 @@
+<?php
+
+class Server_test extends PHPUnit_Framework_TestCase {
+
+	function setUp()
+	{
+		require_once('database_mock.php');
+		$this->server = new Oauth2\Resource\Server();
+		$this->db = new ResourceDB();
+
+		$this->server->registerDbAbstractor($this->db);
+	}
+
+	function test_init_POST()
+	{
+		$_POST['oauth_token'] = 'test12345';
+
+		$this->server->init();
+
+		$this->assertEquals($this->server->_accessToken, $_POST['oauth_token']);
+		$this->assertEquals($this->server->_type, 'user');
+		$this->assertEquals($this->server->_typeId, 123);
+		$this->assertEquals($this->server->_scopes, array('foo', 'bar'));
+	}
+
+	function test_init_GET()
+	{
+		$_GET['oauth_token'] = 'test12345';
+
+		$this->server->init();
+
+		$this->assertEquals($this->server->_accessToken, $_GET['oauth_token']);
+		$this->assertEquals($this->server->_type, 'user');
+		$this->assertEquals($this->server->_typeId, 123);
+		$this->assertEquals($this->server->_scopes, array('foo', 'bar'));
+	}
+
+	function test_init_header()
+	{
+		// Test with authorisation header
+	}
+
+	/**
+	 * @exception OAuthResourceServerException
+	 */
+	function test_init_wrongToken()
+	{
+		$_POST['access_token'] = 'test12345';
+
+		$this->server->init();
+	}
+
+	function test_hasScope()
+	{
+		$_POST['oauth_token'] = 'test12345';
+
+		$this->server->init();
+
+		$this->assertEquals(true, $this->server->hasScope('foo'));
+		$this->assertEquals(true, $this->server->hasScope('bar'));
+		$this->assertEquals(true, $this->server->hasScope(array('foo', 'bar')));
+
+		$this->assertEquals(false, $this->server->hasScope('foobar'));
+		$this->assertEquals(false, $this->server->hasScope(array('foobar')));
+	}
+
+	function test___call()
+	{
+		$_POST['oauth_token'] = 'test12345';
+
+		$this->server->init();
+
+		$this->assertEquals(123, $this->server->isUser());
+		$this->assertEquals(false, $this->server->isMachine());
+	}
+
+}