Merge pull request #1086 from virtualtam/refactor/login

Refactor user login and session management

1 files changed, 374 insertions, 0 deletions

diff --git a/tests/security/LoginManagerTest.php b/tests/security/LoginManagerTest.php
new file mode 100644
index 00000000..f26cd1eb
--- /dev/null
+++ b/tests/security/LoginManagerTest.php
@@ -0,0 +1,374 @@
+<?php
+namespace Shaarli\Security;
+
+require_once 'tests/utils/FakeConfigManager.php';
+use \PHPUnit\Framework\TestCase;
+
+/**
+ * Test coverage for LoginManager
+ */
+class LoginManagerTest extends TestCase
+{
+    /** @var \FakeConfigManager Configuration Manager instance */
+    protected $configManager = null;
+
+    /** @var LoginManager Login Manager instance */
+    protected $loginManager = null;
+
+    /** @var SessionManager Session Manager instance */
+    protected $sessionManager = null;
+
+    /** @var string Banned IP filename */
+    protected $banFile = 'sandbox/ipbans.php';
+
+    /** @var string Log filename */
+    protected $logFile = 'sandbox/shaarli.log';
+
+    /** @var array Simulates the $_COOKIE array */
+    protected $cookie = [];
+
+    /** @var array Simulates the $GLOBALS array */
+    protected $globals = [];
+
+    /** @var array Simulates the $_SERVER array */
+    protected $server = [];
+
+    /** @var array Simulates the $_SESSION array */
+    protected $session = [];
+
+    /** @var string Advertised client IP address */
+    protected $clientIpAddress = '10.1.47.179';
+
+    /** @var string Local client IP address */
+    protected $ipAddr = '127.0.0.1';
+
+    /** @var string Trusted proxy IP address */
+    protected $trustedProxy = '10.1.1.100';
+
+    /** @var string User login */
+    protected $login = 'johndoe';
+
+    /** @var string User password */
+    protected $password = 'IC4nHazL0g1n?';
+
+    /** @var string Hash of the salted user password */
+    protected $passwordHash = '';
+
+    /** @var string Salt used by hash functions */
+    protected $salt = '669e24fa9c5a59a613f98e8e38327384504a4af2';
+
+    /**
+     * Prepare or reset test resources
+     */
+    public function setUp()
+    {
+        if (file_exists($this->banFile)) {
+            unlink($this->banFile);
+        }
+
+        $this->passwordHash = sha1($this->password . $this->login . $this->salt);
+
+        $this->configManager = new \FakeConfigManager([
+            'credentials.login' => $this->login,
+            'credentials.hash' => $this->passwordHash,
+            'credentials.salt' => $this->salt,
+            'resource.ban_file' => $this->banFile,
+            'resource.log' => $this->logFile,
+            'security.ban_after' => 4,
+            'security.ban_duration' => 3600,
+            'security.trusted_proxies' => [$this->trustedProxy],
+        ]);
+
+        $this->cookie = [];
+
+        $this->globals = &$GLOBALS;
+        unset($this->globals['IPBANS']);
+
+        $this->session = [];
+
+        $this->sessionManager = new SessionManager($this->session, $this->configManager);
+        $this->loginManager = new LoginManager($this->globals, $this->configManager, $this->sessionManager);
+        $this->server['REMOTE_ADDR'] = $this->ipAddr;
+    }
+
+    /**
+     * Wipe test resources
+     */
+    public function tearDown()
+    {
+        unset($this->globals['IPBANS']);
+    }
+
+    /**
+     * Instantiate a LoginManager and load ban records
+     */
+    public function testReadBanFile()
+    {
+        file_put_contents(
+            $this->banFile,
+            "<?php\n\$GLOBALS['IPBANS']=array('FAILURES' => array('127.0.0.1' => 99));\n?>"
+        );
+        new LoginManager($this->globals, $this->configManager, null);
+        $this->assertEquals(99, $this->globals['IPBANS']['FAILURES']['127.0.0.1']);
+    }
+
+    /**
+     * Record a failed login attempt
+     */
+    public function testHandleFailedLogin()
+    {
+        $this->loginManager->handleFailedLogin($this->server);
+        $this->assertEquals(1, $this->globals['IPBANS']['FAILURES'][$this->ipAddr]);
+
+        $this->loginManager->handleFailedLogin($this->server);
+        $this->assertEquals(2, $this->globals['IPBANS']['FAILURES'][$this->ipAddr]);
+    }
+
+    /**
+     * Record a failed login attempt - IP behind a trusted proxy
+     */
+    public function testHandleFailedLoginBehindTrustedProxy()
+    {
+        $server = [
+            'REMOTE_ADDR' => $this->trustedProxy,
+            'HTTP_X_FORWARDED_FOR' => $this->ipAddr,
+        ];
+        $this->loginManager->handleFailedLogin($server);
+        $this->assertEquals(1, $this->globals['IPBANS']['FAILURES'][$this->ipAddr]);
+
+        $this->loginManager->handleFailedLogin($server);
+        $this->assertEquals(2, $this->globals['IPBANS']['FAILURES'][$this->ipAddr]);
+    }
+
+    /**
+     * Record a failed login attempt - IP behind a trusted proxy but not forwarded
+     */
+    public function testHandleFailedLoginBehindTrustedProxyNoIp()
+    {
+        $server = [
+            'REMOTE_ADDR' => $this->trustedProxy,
+        ];
+        $this->loginManager->handleFailedLogin($server);
+        $this->assertFalse(isset($this->globals['IPBANS']['FAILURES'][$this->ipAddr]));
+
+        $this->loginManager->handleFailedLogin($server);
+        $this->assertFalse(isset($this->globals['IPBANS']['FAILURES'][$this->ipAddr]));
+    }
+
+    /**
+     * Record a failed login attempt and ban the IP after too many failures
+     */
+    public function testHandleFailedLoginBanIp()
+    {
+        $this->loginManager->handleFailedLogin($this->server);
+        $this->assertEquals(1, $this->globals['IPBANS']['FAILURES'][$this->ipAddr]);
+        $this->assertTrue($this->loginManager->canLogin($this->server));
+
+        $this->loginManager->handleFailedLogin($this->server);
+        $this->assertEquals(2, $this->globals['IPBANS']['FAILURES'][$this->ipAddr]);
+        $this->assertTrue($this->loginManager->canLogin($this->server));
+
+        $this->loginManager->handleFailedLogin($this->server);
+        $this->assertEquals(3, $this->globals['IPBANS']['FAILURES'][$this->ipAddr]);
+        $this->assertTrue($this->loginManager->canLogin($this->server));
+
+        $this->loginManager->handleFailedLogin($this->server);
+        $this->assertEquals(4, $this->globals['IPBANS']['FAILURES'][$this->ipAddr]);
+        $this->assertFalse($this->loginManager->canLogin($this->server));
+
+        // handleFailedLogin is not supposed to be called at this point:
+        // - no login form should be displayed once an IP has been banned
+        // - yet this could happen when using custom templates / scripts
+        $this->loginManager->handleFailedLogin($this->server);
+        $this->assertEquals(5, $this->globals['IPBANS']['FAILURES'][$this->ipAddr]);
+        $this->assertFalse($this->loginManager->canLogin($this->server));
+    }
+
+    /**
+     * Nothing to do
+     */
+    public function testHandleSuccessfulLogin()
+    {
+        $this->assertTrue($this->loginManager->canLogin($this->server));
+
+        $this->loginManager->handleSuccessfulLogin($this->server);
+        $this->assertTrue($this->loginManager->canLogin($this->server));
+    }
+
+    /**
+     * Erase failure records after successfully logging in from this IP
+     */
+    public function testHandleSuccessfulLoginAfterFailure()
+    {
+        $this->loginManager->handleFailedLogin($this->server);
+        $this->loginManager->handleFailedLogin($this->server);
+        $this->assertEquals(2, $this->globals['IPBANS']['FAILURES'][$this->ipAddr]);
+        $this->assertTrue($this->loginManager->canLogin($this->server));
+
+        $this->loginManager->handleSuccessfulLogin($this->server);
+        $this->assertTrue($this->loginManager->canLogin($this->server));
+        $this->assertFalse(isset($this->globals['IPBANS']['FAILURES'][$this->ipAddr]));
+        $this->assertFalse(isset($this->globals['IPBANS']['BANS'][$this->ipAddr]));
+    }
+
+    /**
+     * The IP is not banned
+     */
+    public function testCanLoginIpNotBanned()
+    {
+        $this->assertTrue($this->loginManager->canLogin($this->server));
+    }
+
+    /**
+     * The IP is banned
+     */
+    public function testCanLoginIpBanned()
+    {
+        // ban the IP for an hour
+        $this->globals['IPBANS']['FAILURES'][$this->ipAddr] = 10;
+        $this->globals['IPBANS']['BANS'][$this->ipAddr] = time() + 3600;
+
+        $this->assertFalse($this->loginManager->canLogin($this->server));
+    }
+
+    /**
+     * The IP is banned, and the ban duration is over
+     */
+    public function testCanLoginIpBanExpired()
+    {
+        // ban the IP for an hour
+        $this->globals['IPBANS']['FAILURES'][$this->ipAddr] = 10;
+        $this->globals['IPBANS']['BANS'][$this->ipAddr] = time() + 3600;
+        $this->assertFalse($this->loginManager->canLogin($this->server));
+
+        // lift the ban
+        $this->globals['IPBANS']['BANS'][$this->ipAddr] = time() - 3600;
+        $this->assertTrue($this->loginManager->canLogin($this->server));
+    }
+
+    /**
+     * Generate a token depending on the user credentials and client IP
+     */
+    public function testGenerateStaySignedInToken()
+    {
+        $this->loginManager->generateStaySignedInToken($this->clientIpAddress);
+
+        $this->assertEquals(
+            sha1($this->passwordHash . $this->clientIpAddress . $this->salt),
+            $this->loginManager->getStaySignedInToken()
+        );
+    }
+
+    /**
+     * Check user login - Shaarli has not yet been configured
+     */
+    public function testCheckLoginStateNotConfigured()
+    {
+        $configManager = new \FakeConfigManager([
+            'resource.ban_file' => $this->banFile,
+        ]);
+        $loginManager = new LoginManager($this->globals, $configManager, null);
+        $loginManager->checkLoginState([], '');
+
+        $this->assertFalse($loginManager->isLoggedIn());
+    }
+
+    /**
+     * Check user login - the client cookie does not match the server token
+     */
+    public function testCheckLoginStateStaySignedInWithInvalidToken()
+    {
+        // simulate a previous login
+        $this->session = [
+            'ip' => $this->clientIpAddress,
+            'expires_on' => time() + 100,
+        ];
+        $this->loginManager->generateStaySignedInToken($this->clientIpAddress);
+        $this->cookie[LoginManager::$STAY_SIGNED_IN_COOKIE] = 'nope';
+
+        $this->loginManager->checkLoginState($this->cookie, $this->clientIpAddress);
+
+        $this->assertTrue($this->loginManager->isLoggedIn());
+        $this->assertTrue(empty($this->session['username']));
+    }
+
+    /**
+     * Check user login - the client cookie matches the server token
+     */
+    public function testCheckLoginStateStaySignedInWithValidToken()
+    {
+        $this->loginManager->generateStaySignedInToken($this->clientIpAddress);
+        $this->cookie[LoginManager::$STAY_SIGNED_IN_COOKIE] = $this->loginManager->getStaySignedInToken();
+
+        $this->loginManager->checkLoginState($this->cookie, $this->clientIpAddress);
+
+        $this->assertTrue($this->loginManager->isLoggedIn());
+        $this->assertEquals($this->login, $this->session['username']);
+        $this->assertEquals($this->clientIpAddress, $this->session['ip']);
+    }
+
+    /**
+     * Check user login - the session has expired
+     */
+    public function testCheckLoginStateSessionExpired()
+    {
+        $this->loginManager->generateStaySignedInToken($this->clientIpAddress);
+        $this->session['expires_on'] = time() - 100;
+
+        $this->loginManager->checkLoginState($this->cookie, $this->clientIpAddress);
+
+        $this->assertFalse($this->loginManager->isLoggedIn());
+    }
+
+    /**
+     * Check user login - the remote client IP has changed
+     */
+    public function testCheckLoginStateClientIpChanged()
+    {
+        $this->loginManager->generateStaySignedInToken($this->clientIpAddress);
+
+        $this->loginManager->checkLoginState($this->cookie, '10.7.157.98');
+
+        $this->assertFalse($this->loginManager->isLoggedIn());
+    }
+
+    /**
+     * Check user credentials - wrong login supplied
+     */
+    public function testCheckCredentialsWrongLogin()
+    {
+        $this->assertFalse(
+            $this->loginManager->checkCredentials('', '', 'b4dl0g1n', $this->password)
+        );
+    }
+
+    /**
+     * Check user credentials - wrong password supplied
+     */
+    public function testCheckCredentialsWrongPassword()
+    {
+        $this->assertFalse(
+            $this->loginManager->checkCredentials('', '', $this->login, 'b4dp455wd')
+        );
+    }
+
+    /**
+     * Check user credentials - wrong login and password supplied
+     */
+    public function testCheckCredentialsWrongLoginAndPassword()
+    {
+        $this->assertFalse(
+            $this->loginManager->checkCredentials('', '', 'b4dl0g1n', 'b4dp455wd')
+        );
+    }
+
+    /**
+     * Check user credentials - correct login and password supplied
+     */
+    public function testCheckCredentialsGoodLoginAndPassword()
+    {
+        $this->assertTrue(
+            $this->loginManager->checkCredentials('', '', $this->login, $this->password)
+        );
+    }
+}