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\Authentication;
  11 use Friendica\Core\Config;
  12 use Friendica\Core\L10n;
  13 use Friendica\Database\DBA;
  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/text.php';
  21
  22 /**
  23  * Login module
  24  *
  25  * @author Hypolite Petovan <hypolite@mrpetovan.com>
  26  */
  27 class Login extends BaseModule
  28 {
  29         public static function content()
  30         {
  31                 $a = self::getApp();
  32
  33                 if (x($_SESSION, 'theme')) {
  34                         unset($_SESSION['theme']);
  35                 }
  36
  37                 if (x($_SESSION, 'mobile-theme')) {
  38                         unset($_SESSION['mobile-theme']);
  39                 }
  40
  41                 if (local_user()) {
  42                         goaway(self::getApp()->getBaseURL());
  43                 }
  44
  45                 return self::form($_SESSION['return_url'], intval(Config::get('config', 'register_policy')) !== REGISTER_CLOSED);
  46         }
  47
  48         public static function post()
  49         {
  50                 $return_url = $_SESSION['return_url'];
  51                 session_unset();
  52                 $_SESSION['return_url'] = $return_url;
  53
  54                 // OpenId Login
  55                 if (
  56                         empty($_POST['password'])
  57                         && (
  58                                 !empty($_POST['openid_url'])
  59                                 || !empty($_POST['username'])
  60                         )
  61                 ) {
  62                         $openid_url = trim(defaults($_POST, 'openid_url', $_POST['username']));
  63
  64                         self::openIdAuthentication($openid_url, !empty($_POST['remember']));
  65                 }
  66
  67                 if (x($_POST, 'auth-params') && $_POST['auth-params'] === 'login') {
  68                         self::passwordAuthentication(
  69                                 trim($_POST['username']),
  70                                 trim($_POST['password']),
  71                                 !empty($_POST['remember'])
  72                         );
  73                 }
  74         }
  75
  76         /**
  77          * Attempts to authenticate using OpenId
  78          *
  79          * @param string $openid_url OpenID URL string
  80          * @param bool   $remember   Whether to set the session remember flag
  81          */
  82         private static function openIdAuthentication($openid_url, $remember)
  83         {
  84                 $noid = Config::get('system', 'no_openid');
  85
  86                 // if it's an email address or doesn't resolve to a URL, fail.
  87                 if ($noid || strpos($openid_url, '@') || !Network::isUrlValid($openid_url)) {
  88                         notice(L10n::t('Login failed.') . EOL);
  89                         goaway(self::getApp()->getBaseURL());
  90                         // NOTREACHED
  91                 }
  92
  93                 // Otherwise it's probably an openid.
  94                 try {
  95                         $a = get_app();
  96                         $openid = new LightOpenID($a->getHostName());
  97                         $openid->identity = $openid_url;
  98                         $_SESSION['openid'] = $openid_url;
  99                         $_SESSION['remember'] = $remember;
 100                         $openid->returnUrl = self::getApp()->getBaseURL(true) . '/openid';
 101                         goaway($openid->authUrl());
 102                 } catch (Exception $e) {
 103                         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());
 104                 }
 105         }
 106
 107         /**
 108          * Attempts to authenticate using login/password
 109          *
 110          * @param string $username User name
 111          * @param string $password Clear password
 112          * @param bool   $remember Whether to set the session remember flag
 113          */
 114         private static function passwordAuthentication($username, $password, $remember)
 115         {
 116                 $record = null;
 117
 118                 $addon_auth = [
 119                         'username' => $username,
 120                         'password' => $password,
 121                         'authenticated' => 0,
 122                         'user_record' => null
 123                 ];
 124
 125                 /*
 126                  * An addon indicates successful login by setting 'authenticated' to non-zero value and returning a user record
 127                  * Addons should never set 'authenticated' except to indicate success - as hooks may be chained
 128                  * and later addons should not interfere with an earlier one that succeeded.
 129                  */
 130                 Addon::callHooks('authenticate', $addon_auth);
 131
 132                 try {
 133                         if ($addon_auth['authenticated']) {
 134                                 $record = $addon_auth['user_record'];
 135
 136                                 if (empty($record)) {
 137                                         throw new Exception(L10n::t('Login failed.'));
 138                                 }
 139                         } else {
 140                                 $record = DBA::selectFirst('user', [],
 141                                         ['uid' => User::getIdFromPasswordAuthentication($username, $password)]
 142                                 );
 143                         }
 144                 } catch (Exception $e) {
 145                         logger('authenticate: failed login attempt: ' . notags($username) . ' from IP ' . $_SERVER['REMOTE_ADDR']);
 146                         info('Login failed. Please check your credentials.' . EOL);
 147                         goaway('/');
 148                 }
 149
 150                 if (!$remember) {
 151                         Authentication::setCookie(0); // 0 means delete on browser exit
 152                 }
 153
 154                 // if we haven't failed up this point, log them in.
 155                 $_SESSION['remember'] = $remember;
 156                 $_SESSION['last_login_date'] = DateTimeFormat::utcNow();
 157                 Authentication::setAuthenticatedSessionForUser($record, true, true);
 158
 159                 if (x($_SESSION, 'return_url')) {
 160                         $return_url = $_SESSION['return_url'];
 161                         unset($_SESSION['return_url']);
 162                 } else {
 163                         $return_url = '';
 164                 }
 165
 166                 goaway($return_url);
 167         }
 168
 169         /**
 170          * @brief Tries to auth the user from the cookie or session
 171          *
 172          * @todo Should be moved to Friendica\Core\Session when it's created
 173          */
 174         public static function sessionAuth()
 175         {
 176                 // When the "Friendica" cookie is set, take the value to authenticate and renew the cookie.
 177                 if (isset($_COOKIE["Friendica"])) {
 178                         $data = json_decode($_COOKIE["Friendica"]);
 179                         if (isset($data->uid)) {
 180
 181                                 $user = DBA::selectFirst('user', [],
 182                                         [
 183                                                 'uid'             => $data->uid,
 184                                                 'blocked'         => false,
 185                                                 'account_expired' => false,
 186                                                 'account_removed' => false,
 187                                                 'verified'        => true,
 188                                         ]
 189                                 );
 190                                 if (DBA::isResult($user)) {
 191                                         if ($data->hash != Authentication::getCookieHashForUser($user)) {
 192                                                 logger("Hash for user " . $data->uid . " doesn't fit.");
 193                                                 Authentication::deleteSession();
 194                                                 goaway(self::getApp()->getBaseURL());
 195                                         }
 196
 197                                         // Renew the cookie
 198                                         // Expires after 7 days by default,
 199                                         // can be set via system.auth_cookie_lifetime
 200                                         $authcookiedays = Config::get('system', 'auth_cookie_lifetime', 7);
 201                                         Authentication::setCookie($authcookiedays * 24 * 60 * 60, $user);
 202
 203                                         // Do the authentification if not done by now
 204                                         if (!isset($_SESSION) || !isset($_SESSION['authenticated'])) {
 205                                                 Authentication::setAuthenticatedSessionForUser($user);
 206
 207                                                 if (Config::get('system', 'paranoia')) {
 208                                                         $_SESSION['addr'] = $data->ip;
 209                                                 }
 210                                         }
 211                                 }
 212                         }
 213                 }
 214
 215                 if (isset($_SESSION) && x($_SESSION, 'authenticated')) {
 216                         if (x($_SESSION, 'visitor_id') && !x($_SESSION, 'uid')) {
 217                                 $contact = DBA::selectFirst('contact', [], ['id' => $_SESSION['visitor_id']]);
 218                                 if (DBA::isResult($contact)) {
 219                                         self::getApp()->contact = $contact;
 220                                 }
 221                         }
 222
 223                         if (x($_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                                         Authentication::deleteSession();
 231                                         goaway(self::getApp()->getBaseURL());
 232                                 }
 233
 234                                 $user = DBA::selectFirst('user', [],
 235                                         [
 236                                                 'uid'             => $_SESSION['uid'],
 237                                                 'blocked'         => false,
 238                                                 'account_expired' => false,
 239                                                 'account_removed' => false,
 240                                                 'verified'        => true,
 241                                         ]
 242                                 );
 243                                 if (!DBA::isResult($user)) {
 244                                         Authentication::deleteSession();
 245                                         goaway(self::getApp()->getBaseURL());
 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                                         $login_refresh = true;
 257                                 }
 258                                 Authentication::setAuthenticatedSessionForUser($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->getBaseURL(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()->getBaseURL(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 }