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