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<?php
/**
 * DigestAuthenticateTest file
 *
 * CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
 * Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
 *
 * Licensed under The MIT License
 * For full copyright and license information, please see the LICENSE.txt
 * Redistributions of files must retain the above copyright notice.
 *
 * @copyright     Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
 * @link          http://cakephp.org CakePHP(tm) Project
 * @package       Cake.Test.Case.Controller.Component.Auth
 * @since         CakePHP(tm) v 2.0
 * @license       http://www.opensource.org/licenses/mit-license.php MIT License
 */

App::uses('DigestAuthenticate', 'Controller/Component/Auth');
App::uses('AppModel', 'Model');
App::uses('CakeRequest', 'Network');
App::uses('CakeResponse', 'Network');

require_once CAKE . 'Test' . DS . 'Case' . DS . 'Model' . DS . 'models.php';

/**
 * Test case for DigestAuthentication
 *
 * @package       Cake.Test.Case.Controller.Component.Auth
 */
class DigestAuthenticateTest extends CakeTestCase {

/**
 * Fixtures
 *
 * @var array
 */
        public $fixtures = array('core.user', 'core.auth_user');

/**
 * setup
 *
 * @return void
 */
        public function setUp() {
                parent::setUp();
                $this->Collection = $this->getMock('ComponentCollection');
                $this->server = $_SERVER;
                $this->auth = new DigestAuthenticate($this->Collection, array(
                        'fields' => array('username' => 'user', 'password' => 'password'),
                        'userModel' => 'User',
                        'realm' => 'localhost',
                        'nonce' => 123,
                        'opaque' => '123abc'
                ));

                $password = DigestAuthenticate::password('mariano', 'cake', 'localhost');
                $User = ClassRegistry::init('User');
                $User->updateAll(array('password' => $User->getDataSource()->value($password)));

                $_SERVER['REQUEST_METHOD'] = 'GET';
                $this->response = $this->getMock('CakeResponse');
        }

/**
 * tearDown
 *
 * @return void
 */
        public function tearDown() {
                parent::tearDown();
                $_SERVER = $this->server;
        }

/**
 * test applying settings in the constructor
 *
 * @return void
 */
        public function testConstructor() {
                $object = new DigestAuthenticate($this->Collection, array(
                        'userModel' => 'AuthUser',
                        'fields' => array('username' => 'user', 'password' => 'password'),
                        'nonce' => 123456
                ));
                $this->assertEquals('AuthUser', $object->settings['userModel']);
                $this->assertEquals(array('username' => 'user', 'password' => 'password'), $object->settings['fields']);
                $this->assertEquals(123456, $object->settings['nonce']);
                $this->assertEquals(env('SERVER_NAME'), $object->settings['realm']);
        }

/**
 * test the authenticate method
 *
 * @return void
 */
        public function testAuthenticateNoData() {
                $request = new CakeRequest('posts/index', false);

                $this->response->expects($this->never())
                        ->method('header');

                $this->assertFalse($this->auth->getUser($request, $this->response));
        }

/**
 * test the authenticate method
 *
 * @expectedException UnauthorizedException
 * @expectedExceptionCode 401
 * @return void
 */
        public function testAuthenticateWrongUsername() {
                $request = new CakeRequest('posts/index', false);
                $request->addParams(array('pass' => array(), 'named' => array()));

                $_SERVER['PHP_AUTH_DIGEST'] = <<<DIGEST
Digest username="incorrect_user",
realm="localhost",
nonce="123456",
uri="/dir/index.html",
qop=auth,
nc=00000001,
cnonce="0a4f113b",
response="6629fae49393a05397450978507c4ef1",
opaque="123abc"
DIGEST;

                $this->auth->unauthenticated($request, $this->response);
        }

/**
 * test that challenge headers are sent when no credentials are found.
 *
 * @return void
 */
        public function testAuthenticateChallenge() {
                $request = new CakeRequest('posts/index', false);
                $request->addParams(array('pass' => array(), 'named' => array()));

                try {
                        $this->auth->unauthenticated($request, $this->response);
                } catch (UnauthorizedException $e) {
                }

                $this->assertNotEmpty($e);

                $expected = array('WWW-Authenticate: Digest realm="localhost",qop="auth",nonce="123",opaque="123abc"');
                $this->assertEquals($expected, $e->responseHeader());
        }

/**
 * test authenticate success
 *
 * @return void
 */
        public function testAuthenticateSuccess() {
                $request = new CakeRequest('posts/index', false);
                $request->addParams(array('pass' => array(), 'named' => array()));

                $_SERVER['PHP_AUTH_DIGEST'] = <<<DIGEST
Digest username="mariano",
realm="localhost",
nonce="123",
uri="/dir/index.html",
qop=auth,
nc=1,
cnonce="123",
response="06b257a54befa2ddfb9bfa134224aa29",
opaque="123abc"
DIGEST;

                $result = $this->auth->authenticate($request, $this->response);
                $expected = array(
                        'id' => 1,
                        'user' => 'mariano',
                        'created' => '2007-03-17 01:16:23',
                        'updated' => '2007-03-17 01:18:31'
                );
                $this->assertEquals($expected, $result);
        }

/**
 * test scope failure.
 *
 * @expectedException UnauthorizedException
 * @expectedExceptionCode 401
 * @return void
 */
        public function testAuthenticateFailReChallenge() {
                $this->auth->settings['scope'] = array('user' => 'nate');
                $request = new CakeRequest('posts/index', false);
                $request->addParams(array('pass' => array(), 'named' => array()));

                $_SERVER['PHP_AUTH_DIGEST'] = <<<DIGEST
Digest username="mariano",
realm="localhost",
nonce="123",
uri="/dir/index.html",
qop=auth,
nc=1,
cnonce="123",
response="6629fae49393a05397450978507c4ef1",
opaque="123abc"
DIGEST;

                $this->auth->unauthenticated($request, $this->response);
        }

/**
 * testParseDigestAuthData method
 *
 * @return void
 */
        public function testParseAuthData() {
                $digest = <<<DIGEST
                        Digest username="Mufasa",
                        realm="testrealm@host.com",
                        nonce="dcd98b7102dd2f0e8b11d0f600bfb0c093",
                        uri="/dir/index.html?query=string&value=some%20value",
                        qop=auth,
                        nc=00000001,
                        cnonce="0a4f113b",
                        response="6629fae49393a05397450978507c4ef1",
                        opaque="5ccc069c403ebaf9f0171e9517f40e41"
DIGEST;
                $expected = array(
                        'username' => 'Mufasa',
                        'realm' => 'testrealm@host.com',
                        'nonce' => 'dcd98b7102dd2f0e8b11d0f600bfb0c093',
                        'uri' => '/dir/index.html?query=string&value=some%20value',
                        'qop' => 'auth',
                        'nc' => '00000001',
                        'cnonce' => '0a4f113b',
                        'response' => '6629fae49393a05397450978507c4ef1',
                        'opaque' => '5ccc069c403ebaf9f0171e9517f40e41'
                );
                $result = $this->auth->parseAuthData($digest);
                $this->assertSame($expected, $result);

                $result = $this->auth->parseAuthData('');
                $this->assertNull($result);
        }

/**
 * Test parsing a full URI. While not part of the spec some mobile clients will do it wrong.
 *
 * @return void
 */
        public function testParseAuthDataFullUri() {
                $digest = <<<DIGEST
                        Digest username="admin",
                        realm="192.168.0.2",
                        nonce="53a7f9b83f61b",
                        uri="http://192.168.0.2/pvcollection/sites/pull/HFD%200001.json#fragment",
                        qop=auth,
                        nc=00000001,
                        cnonce="b85ff144e496e6e18d1c73020566ea3b",
                        response="5894f5d9cd41d012bac09eeb89d2ddf2",
                        opaque="6f65e91667cf98dd13464deaf2739fde"
DIGEST;

                $expected = 'http://192.168.0.2/pvcollection/sites/pull/HFD%200001.json#fragment';
                $result = $this->auth->parseAuthData($digest);
                $this->assertSame($expected, $result['uri']);
        }

/**
 * test parsing digest information with email addresses
 *
 * @return void
 */
        public function testParseAuthEmailAddress() {
                $digest = <<<DIGEST
                        Digest username="mark@example.com",
                        realm="testrealm@host.com",
                        nonce="dcd98b7102dd2f0e8b11d0f600bfb0c093",
                        uri="/dir/index.html",
                        qop=auth,
                        nc=00000001,
                        cnonce="0a4f113b",
                        response="6629fae49393a05397450978507c4ef1",
                        opaque="5ccc069c403ebaf9f0171e9517f40e41"
DIGEST;
                $expected = array(
                        'username' => 'mark@example.com',
                        'realm' => 'testrealm@host.com',
                        'nonce' => 'dcd98b7102dd2f0e8b11d0f600bfb0c093',
                        'uri' => '/dir/index.html',
                        'qop' => 'auth',
                        'nc' => '00000001',
                        'cnonce' => '0a4f113b',
                        'response' => '6629fae49393a05397450978507c4ef1',
                        'opaque' => '5ccc069c403ebaf9f0171e9517f40e41'
                );
                $result = $this->auth->parseAuthData($digest);
                $this->assertSame($expected, $result);
        }

/**
 * test password hashing
 *
 * @return void
 */
        public function testPassword() {
                $result = DigestAuthenticate::password('mark', 'password', 'localhost');
                $expected = md5('mark:localhost:password');
                $this->assertEquals($expected, $result);
        }
}