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 $this->staySignedInToken
= sha1(
62 $this->configManager
->get('credentials.hash')
64 . $this->configManager
->get('credentials.salt')
69 * Return the user's client stay-signed-in token
71 * @return string User's client stay-signed-in token
73 public function getStaySignedInToken()
75 return $this->staySignedInToken
;
79 * Check user session state and validity (expiration)
81 * @param array $cookie The $_COOKIE array
82 * @param string $clientIpId Client IP address identifier
84 public function checkLoginState($cookie, $clientIpId)
86 if (! $this->configManager
->exists('credentials.login')) {
87 // Shaarli is not configured yet
88 $this->isLoggedIn
= false;
92 if (isset($cookie[self
::$STAY_SIGNED_IN_COOKIE])
93 && $cookie[self
::$STAY_SIGNED_IN_COOKIE] === $this->staySignedInToken
95 // The user client has a valid stay-signed-in cookie
96 // Session information is updated with the current client information
97 $this->sessionManager
->storeLoginInfo($clientIpId);
98 } elseif ($this->sessionManager
->hasSessionExpired()
99 || $this->sessionManager
->hasClientIpChanged($clientIpId)
101 $this->sessionManager
->logout();
102 $this->isLoggedIn
= false;
106 $this->isLoggedIn
= true;
107 $this->sessionManager
->extendSession();
111 * Return whether the user is currently logged in
113 * @return true when the user is logged in, false otherwise
115 public function isLoggedIn()
117 if ($this->openShaarli
) {
120 return $this->isLoggedIn
;
124 * Check user credentials are valid
126 * @param string $remoteIp Remote client IP address
127 * @param string $clientIpId Client IP address identifier
128 * @param string $login Username
129 * @param string $password Password
131 * @return bool true if the provided credentials are valid, false otherwise
133 public function checkCredentials($remoteIp, $clientIpId, $login, $password)
135 $hash = sha1($password . $login . $this->configManager
->get('credentials.salt'));
137 if ($login != $this->configManager
->get('credentials.login')
138 || $hash != $this->configManager
->get('credentials.hash')
141 $this->configManager
->get('resource.log'),
143 'Login failed for user ' . $login
148 $this->sessionManager
->storeLoginInfo($clientIpId);
150 $this->configManager
->get('resource.log'),
158 * Read a file containing banned IPs
160 protected function readBanFile()
162 if (! file_exists($this->banFile
)) {
165 include $this->banFile
;
169 * Write the banned IPs to a file
171 protected function writeBanFile()
173 if (! array_key_exists('IPBANS', $this->globals
)) {
178 "<?php\n\$GLOBALS['IPBANS']=" . var_export($this->globals
['IPBANS'], true) . ";\n?>"
183 * Handle a failed login and ban the IP after too many failed attempts
185 * @param array $server The $_SERVER array
187 public function handleFailedLogin($server)
189 $ip = $server['REMOTE_ADDR'];
190 $trusted = $this->configManager
->get('security.trusted_proxies', []);
192 if (in_array($ip, $trusted)) {
193 $ip = getIpAddressFromProxy($server, $trusted);
195 // the IP is behind a trusted forward proxy, but is not forwarded
196 // in the HTTP headers, so we do nothing
201 // increment the fail count for this IP
202 if (isset($this->globals
['IPBANS']['FAILURES'][$ip])) {
203 $this->globals
['IPBANS']['FAILURES'][$ip]++
;
205 $this->globals
['IPBANS']['FAILURES'][$ip] = 1;
208 if ($this->globals
['IPBANS']['FAILURES'][$ip] >= $this->configManager
->get('security.ban_after')) {
209 $this->globals
['IPBANS']['BANS'][$ip] = time() +
$this->configManager
->get('security.ban_duration', 1800);
211 $this->configManager
->get('resource.log'),
212 $server['REMOTE_ADDR'],
213 'IP address banned from login'
216 $this->writeBanFile();
220 * Handle a successful login
222 * @param array $server The $_SERVER array
224 public function handleSuccessfulLogin($server)
226 $ip = $server['REMOTE_ADDR'];
227 // FIXME unban when behind a trusted proxy?
229 unset($this->globals
['IPBANS']['FAILURES'][$ip]);
230 unset($this->globals
['IPBANS']['BANS'][$ip]);
232 $this->writeBanFile();
236 * Check if the user can login from this IP
238 * @param array $server The $_SERVER array
240 * @return bool true if the user is allowed to login
242 public function canLogin($server)
244 $ip = $server['REMOTE_ADDR'];
246 if (! isset($this->globals
['IPBANS']['BANS'][$ip])) {
247 // the user is not banned
251 if ($this->globals
['IPBANS']['BANS'][$ip] > time()) {
252 // the user is still banned
256 // the ban has expired, the user can attempt to log in again
257 logm($this->configManager
->get('resource.log'), $server['REMOTE_ADDR'], 'Ban lifted.');
258 unset($this->globals
['IPBANS']['FAILURES'][$ip]);
259 unset($this->globals
['IPBANS']['BANS'][$ip]);
261 $this->writeBanFile();