2 namespace Shaarli\Security
;
4 use Shaarli\Config\ConfigManager
;
7 * User login management
11 /** @var string Name of the cookie set after logging in **/
12 public static $STAY_SIGNED_IN_COOKIE = 'shaarli_staySignedIn';
14 /** @var array A reference to the $_GLOBALS array */
15 protected $globals = [];
17 /** @var ConfigManager Configuration Manager instance **/
18 protected $configManager = null;
20 /** @var SessionManager Session Manager instance **/
21 protected $sessionManager = null;
23 /** @var string Path to the file containing IP bans */
24 protected $banFile = '';
26 /** @var bool Whether the user is logged in **/
27 protected $isLoggedIn = false;
29 /** @var bool Whether the Shaarli instance is open to public edition **/
30 protected $openShaarli = false;
32 /** @var string User sign-in token depending on remote IP and credentials */
33 protected $staySignedInToken = '';
38 * @param array $globals The $GLOBALS array (reference)
39 * @param ConfigManager $configManager Configuration Manager instance
40 * @param SessionManager $sessionManager SessionManager instance
42 public function __construct(& $globals, $configManager, $sessionManager)
44 $this->globals
= &$globals;
45 $this->configManager
= $configManager;
46 $this->sessionManager
= $sessionManager;
47 $this->banFile
= $this->configManager
->get('resource.ban_file', 'data/ipbans.php');
49 if ($this->configManager
->get('security.open_shaarli') === true) {
50 $this->openShaarli
= true;
55 * Generate a token depending on deployment salt, user password and client IP
57 * @param string $clientIpAddress The remote client IP address
59 public function generateStaySignedInToken($clientIpAddress)
61 if ($this->configManager
->get('security.session_protection_disabled') === true) {
62 $clientIpAddress = '';
64 $this->staySignedInToken
= sha1(
65 $this->configManager
->get('credentials.hash')
67 . $this->configManager
->get('credentials.salt')
72 * Return the user's client stay-signed-in token
74 * @return string User's client stay-signed-in token
76 public function getStaySignedInToken()
78 return $this->staySignedInToken
;
82 * Check user session state and validity (expiration)
84 * @param array $cookie The $_COOKIE array
85 * @param string $clientIpId Client IP address identifier
87 public function checkLoginState($cookie, $clientIpId)
89 if (! $this->configManager
->exists('credentials.login')) {
90 // Shaarli is not configured yet
91 $this->isLoggedIn
= false;
95 if (isset($cookie[self
::$STAY_SIGNED_IN_COOKIE])
96 && $cookie[self
::$STAY_SIGNED_IN_COOKIE] === $this->staySignedInToken
98 // The user client has a valid stay-signed-in cookie
99 // Session information is updated with the current client information
100 $this->sessionManager
->storeLoginInfo($clientIpId);
101 } elseif ($this->sessionManager
->hasSessionExpired()
102 || $this->sessionManager
->hasClientIpChanged($clientIpId)
104 $this->sessionManager
->logout();
105 $this->isLoggedIn
= false;
109 $this->isLoggedIn
= true;
110 $this->sessionManager
->extendSession();
114 * Return whether the user is currently logged in
116 * @return true when the user is logged in, false otherwise
118 public function isLoggedIn()
120 if ($this->openShaarli
) {
123 return $this->isLoggedIn
;
127 * Check user credentials are valid
129 * @param string $remoteIp Remote client IP address
130 * @param string $clientIpId Client IP address identifier
131 * @param string $login Username
132 * @param string $password Password
134 * @return bool true if the provided credentials are valid, false otherwise
136 public function checkCredentials($remoteIp, $clientIpId, $login, $password)
138 $hash = sha1($password . $login . $this->configManager
->get('credentials.salt'));
140 if ($login != $this->configManager
->get('credentials.login')
141 || $hash != $this->configManager
->get('credentials.hash')
144 $this->configManager
->get('resource.log'),
146 'Login failed for user ' . $login
151 $this->sessionManager
->storeLoginInfo($clientIpId);
153 $this->configManager
->get('resource.log'),
161 * Read a file containing banned IPs
163 protected function readBanFile()
165 if (! file_exists($this->banFile
)) {
168 include $this->banFile
;
172 * Write the banned IPs to a file
174 protected function writeBanFile()
176 if (! array_key_exists('IPBANS', $this->globals
)) {
181 "<?php\n\$GLOBALS['IPBANS']=" . var_export($this->globals
['IPBANS'], true) . ";\n?>"
186 * Handle a failed login and ban the IP after too many failed attempts
188 * @param array $server The $_SERVER array
190 public function handleFailedLogin($server)
192 $ip = $server['REMOTE_ADDR'];
193 $trusted = $this->configManager
->get('security.trusted_proxies', []);
195 if (in_array($ip, $trusted)) {
196 $ip = getIpAddressFromProxy($server, $trusted);
198 // the IP is behind a trusted forward proxy, but is not forwarded
199 // in the HTTP headers, so we do nothing
204 // increment the fail count for this IP
205 if (isset($this->globals
['IPBANS']['FAILURES'][$ip])) {
206 $this->globals
['IPBANS']['FAILURES'][$ip]++
;
208 $this->globals
['IPBANS']['FAILURES'][$ip] = 1;
211 if ($this->globals
['IPBANS']['FAILURES'][$ip] >= $this->configManager
->get('security.ban_after')) {
212 $this->globals
['IPBANS']['BANS'][$ip] = time() +
$this->configManager
->get('security.ban_duration', 1800);
214 $this->configManager
->get('resource.log'),
215 $server['REMOTE_ADDR'],
216 'IP address banned from login'
219 $this->writeBanFile();
223 * Handle a successful login
225 * @param array $server The $_SERVER array
227 public function handleSuccessfulLogin($server)
229 $ip = $server['REMOTE_ADDR'];
230 // FIXME unban when behind a trusted proxy?
232 unset($this->globals
['IPBANS']['FAILURES'][$ip]);
233 unset($this->globals
['IPBANS']['BANS'][$ip]);
235 $this->writeBanFile();
239 * Check if the user can login from this IP
241 * @param array $server The $_SERVER array
243 * @return bool true if the user is allowed to login
245 public function canLogin($server)
247 $ip = $server['REMOTE_ADDR'];
249 if (! isset($this->globals
['IPBANS']['BANS'][$ip])) {
250 // the user is not banned
254 if ($this->globals
['IPBANS']['BANS'][$ip] > time()) {
255 // the user is still banned
259 // the ban has expired, the user can attempt to log in again
260 logm($this->configManager
->get('resource.log'), $server['REMOTE_ADDR'], 'Ban lifted.');
261 unset($this->globals
['IPBANS']['FAILURES'][$ip]);
262 unset($this->globals
['IPBANS']['BANS'][$ip]);
264 $this->writeBanFile();