src/Module/Login.php

   1 <?php
   2 /**
   3  * @file src/Module/Login.php
   4  */
   5 namespace Friendica\Module;
   6
   7 use Exception;
   8 use Friendica\BaseModule;
   9 use Friendica\Core\Addon;
  10 use Friendica\Core\Config;
  11 use Friendica\Core\L10n;
  12 use Friendica\Database\DBA;
  13 use Friendica\Database\DBM;
  14 use Friendica\Model\User;
  15 use Friendica\Util\DateTimeFormat;
  16 use Friendica\Util\Network;
  17 use LightOpenID;
  18
  19 require_once 'boot.php';
  20 require_once 'include/security.php';
  21 require_once 'include/text.php';
  22
  23 /**
  24  * Login module
  25  *
  26  * @author Hypolite Petovan mrpetovan@gmail.com
  27  */
  28 class Login extends BaseModule
  29 {
  30         public static function content()
  31         {
  32                 $a = self::getApp();
  33
  34                 if (x($_SESSION, 'theme')) {
  35                         unset($_SESSION['theme']);
  36                 }
  37
  38                 if (x($_SESSION, 'mobile-theme')) {
  39                         unset($_SESSION['mobile-theme']);
  40                 }
  41
  42                 if (local_user()) {
  43                         goaway(self::getApp()->get_baseurl());
  44                 }
  45
  46                 return self::form(self::getApp()->get_baseurl(), intval(Config::get('config', 'register_policy')) !== REGISTER_CLOSED);
  47         }
  48
  49         public static function post()
  50         {
  51                 session_unset();
  52                 // OpenId Login
  53                 if (
  54                         empty($_POST['password'])
  55                         && (
  56                                 !empty($_POST['openid_url'])
  57                                 || !empty($_POST['username'])
  58                         )
  59                 ) {
  60                         $openid_url = trim(defaults($_POST, 'openid_url', $_POST['username']));
  61
  62                         self::openIdAuthentication($openid_url, !empty($_POST['remember']));
  63                 }
  64
  65                 if (x($_POST, 'auth-params') && $_POST['auth-params'] === 'login') {
  66                         self::passwordAuthentication(
  67                                 trim($_POST['username']),
  68                                 trim($_POST['password']),
  69                                 !empty($_POST['remember'])
  70                         );
  71                 }
  72         }
  73
  74         /**
  75          * Attempts to authenticate using OpenId
  76          *
  77          * @param string $openid_url OpenID URL string
  78          * @param bool   $remember   Whether to set the session remember flag
  79          */
  80         private static function openIdAuthentication($openid_url, $remember)
  81         {
  82                 $noid = Config::get('system', 'no_openid');
  83
  84                 // if it's an email address or doesn't resolve to a URL, fail.
  85                 if ($noid || strpos($openid_url, '@') || !Network::isUrlValid($openid_url)) {
  86                         notice(L10n::t('Login failed.') . EOL);
  87                         goaway(self::getApp()->get_baseurl());
  88                         // NOTREACHED
  89                 }
  90
  91                 // Otherwise it's probably an openid.
  92                 try {
  93                         $a = get_app();
  94                         $openid = new LightOpenID($a->get_hostname());
  95                         $openid->identity = $openid_url;
  96                         $_SESSION['openid'] = $openid_url;
  97                         $_SESSION['remember'] = $remember;
  98                         $openid->returnUrl = self::getApp()->get_baseurl(true) . '/openid';
  99                         goaway($openid->authUrl());
 100                 } catch (Exception $e) {
 101                         notice(L10n::t('We encountered a problem while logging in with the OpenID you provided. Please check the correct spelling of the ID.') . '<br /><br >' . L10n::t('The error message was:') . ' ' . $e->getMessage());
 102                 }
 103         }
 104
 105         /**
 106          * Attempts to authenticate using login/password
 107          *
 108          * @param string $username User name
 109          * @param string $password Clear password
 110          * @param bool   $remember Whether to set the session remember flag
 111          */
 112         private static function passwordAuthentication($username, $password, $remember)
 113         {
 114                 $record = null;
 115
 116                 $addon_auth = [
 117                         'username' => $username,
 118                         'password' => $password,
 119                         'authenticated' => 0,
 120                         'user_record' => null
 121                 ];
 122
 123                 /*
 124                  * An addon indicates successful login by setting 'authenticated' to non-zero value and returning a user record
 125                  * Addons should never set 'authenticated' except to indicate success - as hooks may be chained
 126                  * and later addons should not interfere with an earlier one that succeeded.
 127                  */
 128                 Addon::callHooks('authenticate', $addon_auth);
 129
 130                 try {
 131                         if ($addon_auth['authenticated']) {
 132                                 $record = $addon_auth['user_record'];
 133
 134                                 if (empty($record)) {
 135                                         throw new Exception(L10n::t('Login failed.'));
 136                                 }
 137                         } else {
 138                                 $record = DBA::selectFirst('user', [],
 139                                         ['uid' => User::getIdFromPasswordAuthentication($username, $password)]
 140                                 );
 141                         }
 142                 } catch (Exception $e) {
 143                         logger('authenticate: failed login attempt: ' . notags($username) . ' from IP ' . $_SERVER['REMOTE_ADDR']);
 144                         notice($e->getMessage() . EOL);
 145                         goaway(self::getApp()->get_baseurl() . '/login');
 146                 }
 147
 148                 if (!$remember) {
 149                         new_cookie(0); // 0 means delete on browser exit
 150                 }
 151
 152                 // if we haven't failed up this point, log them in.
 153                 $_SESSION['remember'] = $remember;
 154                 $_SESSION['last_login_date'] = DateTimeFormat::utcNow();
 155                 authenticate_success($record, true, true);
 156
 157                 if (x($_SESSION, 'return_url')) {
 158                         $return_url = $_SESSION['return_url'];
 159                         unset($_SESSION['return_url']);
 160                 } else {
 161                         $return_url = '';
 162                 }
 163
 164                 goaway($return_url);
 165         }
 166
 167         /**
 168          * @brief Tries to auth the user from the cookie or session
 169          *
 170          * @todo Should be moved to Friendica\Core\Session when it's created
 171          */
 172         public static function sessionAuth()
 173         {
 174                 // When the "Friendica" cookie is set, take the value to authenticate and renew the cookie.
 175                 if (isset($_COOKIE["Friendica"])) {
 176                         $data = json_decode($_COOKIE["Friendica"]);
 177                         if (isset($data->uid)) {
 178
 179                                 $user = DBA::selectFirst('user', [],
 180                                         [
 181                                                 'uid'             => $data->uid,
 182                                                 'blocked'         => false,
 183                                                 'account_expired' => false,
 184                                                 'account_removed' => false,
 185                                                 'verified'        => true,
 186                                         ]
 187                                 );
 188                                 if (DBM::is_result($user)) {
 189                                         if ($data->hash != cookie_hash($user)) {
 190                                                 logger("Hash for user " . $data->uid . " doesn't fit.");
 191                                                 nuke_session();
 192                                                 goaway(self::getApp()->get_baseurl());
 193                                         }
 194
 195                                         // Renew the cookie
 196                                         // Expires after 7 days by default,
 197                                         // can be set via system.auth_cookie_lifetime
 198                                         $authcookiedays = Config::get('system', 'auth_cookie_lifetime', 7);
 199                                         new_cookie($authcookiedays * 24 * 60 * 60, $user);
 200
 201                                         // Do the authentification if not done by now
 202                                         if (!isset($_SESSION) || !isset($_SESSION['authenticated'])) {
 203                                                 authenticate_success($user);
 204
 205                                                 if (Config::get('system', 'paranoia')) {
 206                                                         $_SESSION['addr'] = $data->ip;
 207                                                 }
 208                                         }
 209                                 }
 210                         }
 211                 }
 212
 213                 if (isset($_SESSION) && x($_SESSION, 'authenticated')) {
 214                         if (x($_SESSION, 'visitor_id') && !x($_SESSION, 'uid')) {
 215                                 $r = q("SELECT * FROM `contact` WHERE `id` = %d LIMIT 1",
 216                                         intval($_SESSION['visitor_id'])
 217                                 );
 218                                 if (DBM::is_result($r)) {
 219                                         self::getApp()->contact = $r[0];
 220                                 }
 221                         }
 222
 223                         if (x($_SESSION, 'uid')) {
 224                                 // already logged in user returning
 225                                 $check = Config::get('system', 'paranoia');
 226                                 // extra paranoia - if the IP changed, log them out
 227                                 if ($check && ($_SESSION['addr'] != $_SERVER['REMOTE_ADDR'])) {
 228                                         logger('Session address changed. Paranoid setting in effect, blocking session. ' .
 229                                                 $_SESSION['addr'] . ' != ' . $_SERVER['REMOTE_ADDR']);
 230                                         nuke_session();
 231                                         goaway(self::getApp()->get_baseurl());
 232                                 }
 233
 234                                 $user = DBA::selectFirst('user', [],
 235                                         [
 236                                                 'uid'             => $_SESSION['uid'],
 237                                                 'blocked'         => false,
 238                                                 'account_expired' => false,
 239                                                 'account_removed' => false,
 240                                                 'verified'        => true,
 241                                         ]
 242                                 );
 243                                 if (!DBM::is_result($user)) {
 244                                         nuke_session();
 245                                         goaway(self::getApp()->get_baseurl());
 246                                 }
 247
 248                                 // Make sure to refresh the last login time for the user if the user
 249                                 // stays logged in for a long time, e.g. with "Remember Me"
 250                                 $login_refresh = false;
 251                                 if (empty($_SESSION['last_login_date'])) {
 252                                         $_SESSION['last_login_date'] = DateTimeFormat::utcNow();
 253                                 }
 254                                 if (strcmp(DateTimeFormat::utc('now - 12 hours'), $_SESSION['last_login_date']) > 0) {
 255                                         $_SESSION['last_login_date'] = DateTimeFormat::utcNow();
 256                                         $login_refresh = true;
 257                                 }
 258                                 authenticate_success($user, false, false, $login_refresh);
 259                         }
 260                 }
 261         }
 262
 263         /**
 264          * @brief Wrapper for adding a login box.
 265          *
 266          * @param string $return_url The url relative to the base the user should be sent
 267          *                                                       back to after login completes
 268          * @param bool $register If $register == true provide a registration link.
 269          *                                               This will most always depend on the value of config.register_policy.
 270          * @param array $hiddens  optional
 271          *
 272          * @return string Returns the complete html for inserting into the page
 273          *
 274          * @hooks 'login_hook' string $o
 275          */
 276         public static function form($return_url = null, $register = false, $hiddens = [])
 277         {
 278                 $a = self::getApp();
 279                 $o = '';
 280                 $reg = false;
 281                 if ($register) {
 282                         $reg = [
 283                                 'title' => L10n::t('Create a New Account'),
 284                                 'desc' => L10n::t('Register')
 285                         ];
 286                 }
 287
 288                 $noid = Config::get('system', 'no_openid');
 289
 290                 if (is_null($return_url)) {
 291                         $return_url = $a->query_string;
 292                 }
 293
 294                 if (local_user()) {
 295                         $tpl = get_markup_template('logout.tpl');
 296                 } else {
 297                         $a->page['htmlhead'] .= replace_macros(
 298                                 get_markup_template('login_head.tpl'),
 299                                 [
 300                                         '$baseurl' => $a->get_baseurl(true)
 301                                 ]
 302                         );
 303
 304                         $tpl = get_markup_template('login.tpl');
 305                         $_SESSION['return_url'] = $return_url;
 306                 }
 307
 308                 $o .= replace_macros(
 309                         $tpl,
 310                         [
 311                                 '$dest_url'     => self::getApp()->get_baseurl(true) . '/login',
 312                                 '$logout'       => L10n::t('Logout'),
 313                                 '$login'        => L10n::t('Login'),
 314
 315                                 '$lname'        => ['username', L10n::t('Nickname or Email: ') , '', ''],
 316                                 '$lpassword'    => ['password', L10n::t('Password: '), '', ''],
 317                                 '$lremember'    => ['remember', L10n::t('Remember me'), 0,  ''],
 318
 319                                 '$openid'       => !$noid,
 320                                 '$lopenid'      => ['openid_url', L10n::t('Or login using OpenID: '),'',''],
 321
 322                                 '$hiddens'      => $hiddens,
 323
 324                                 '$register'     => $reg,
 325
 326                                 '$lostpass'     => L10n::t('Forgot your password?'),
 327                                 '$lostlink'     => L10n::t('Password Reset'),
 328
 329                                 '$tostitle'     => L10n::t('Website Terms of Service'),
 330                                 '$toslink'      => L10n::t('terms of service'),
 331
 332                                 '$privacytitle' => L10n::t('Website Privacy Policy'),
 333                                 '$privacylink'  => L10n::t('privacy policy'),
 334                         ]
 335                 );
 336
 337                 Addon::callHooks('login_hook', $o);
 338
 339                 return $o;
 340         }
 341 }