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\Core\Logger;
  14 use Friendica\Core\System;
  15 use Friendica\Database\DBA;
  16 use Friendica\Model\User;
  17 use Friendica\Util\DateTimeFormat;
  18 use Friendica\Util\Network;
  19 use LightOpenID;
  20
  21 require_once 'boot.php';
  22 require_once 'include/text.php';
  23
  24 /**
  25  * Login module
  26  *
  27  * @author Hypolite Petovan <hypolite@mrpetovan.com>
  28  */
  29 class Login extends BaseModule
  30 {
  31         public static function content()
  32         {
  33                 $a = self::getApp();
  34
  35                 if (x($_SESSION, 'theme')) {
  36                         unset($_SESSION['theme']);
  37                 }
  38
  39                 if (x($_SESSION, 'mobile-theme')) {
  40                         unset($_SESSION['mobile-theme']);
  41                 }
  42
  43                 if (local_user()) {
  44                         $a->internalRedirect();
  45                 }
  46
  47                 return self::form($_SESSION['return_path'], intval(Config::get('config', 'register_policy')) !== REGISTER_CLOSED);
  48         }
  49
  50         public static function post()
  51         {
  52                 $return_path = $_SESSION['return_path'];
  53                 session_unset();
  54                 $_SESSION['return_path'] = $return_path;
  55
  56                 // OpenId Login
  57                 if (
  58                         empty($_POST['password'])
  59                         && (
  60                                 !empty($_POST['openid_url'])
  61                                 || !empty($_POST['username'])
  62                         )
  63                 ) {
  64                         $openid_url = trim(defaults($_POST, 'openid_url', $_POST['username']));
  65
  66                         self::openIdAuthentication($openid_url, !empty($_POST['remember']));
  67                 }
  68
  69                 if (x($_POST, 'auth-params') && $_POST['auth-params'] === 'login') {
  70                         self::passwordAuthentication(
  71                                 trim($_POST['username']),
  72                                 trim($_POST['password']),
  73                                 !empty($_POST['remember'])
  74                         );
  75                 }
  76         }
  77
  78         /**
  79          * Attempts to authenticate using OpenId
  80          *
  81          * @param string $openid_url OpenID URL string
  82          * @param bool   $remember   Whether to set the session remember flag
  83          */
  84         private static function openIdAuthentication($openid_url, $remember)
  85         {
  86                 $noid = Config::get('system', 'no_openid');
  87
  88                 $a = self::getApp();
  89
  90                 // if it's an email address or doesn't resolve to a URL, fail.
  91                 if ($noid || strpos($openid_url, '@') || !Network::isUrlValid($openid_url)) {
  92                         notice(L10n::t('Login failed.') . EOL);
  93                         $a->internalRedirect();
  94                         // NOTREACHED
  95                 }
  96
  97                 // Otherwise it's probably an openid.
  98                 try {
  99                         $openid = new LightOpenID($a->getHostName());
 100                         $openid->identity = $openid_url;
 101                         $_SESSION['openid'] = $openid_url;
 102                         $_SESSION['remember'] = $remember;
 103                         $openid->returnUrl = $a->getBaseURL(true) . '/openid';
 104                         System::externalRedirect($openid->authUrl());
 105                 } catch (Exception $e) {
 106                         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());
 107                 }
 108         }
 109
 110         /**
 111          * Attempts to authenticate using login/password
 112          *
 113          * @param string $username User name
 114          * @param string $password Clear password
 115          * @param bool   $remember Whether to set the session remember flag
 116          */
 117         private static function passwordAuthentication($username, $password, $remember)
 118         {
 119                 $record = null;
 120
 121                 $addon_auth = [
 122                         'username' => $username,
 123                         'password' => $password,
 124                         'authenticated' => 0,
 125                         'user_record' => null
 126                 ];
 127
 128                 $a = self::getApp();
 129
 130                 /*
 131                  * An addon indicates successful login by setting 'authenticated' to non-zero value and returning a user record
 132                  * Addons should never set 'authenticated' except to indicate success - as hooks may be chained
 133                  * and later addons should not interfere with an earlier one that succeeded.
 134                  */
 135                 Addon::callHooks('authenticate', $addon_auth);
 136
 137                 try {
 138                         if ($addon_auth['authenticated']) {
 139                                 $record = $addon_auth['user_record'];
 140
 141                                 if (empty($record)) {
 142                                         throw new Exception(L10n::t('Login failed.'));
 143                                 }
 144                         } else {
 145                                 $record = DBA::selectFirst('user', [],
 146                                         ['uid' => User::getIdFromPasswordAuthentication($username, $password)]
 147                                 );
 148                         }
 149                 } catch (Exception $e) {
 150                         Logger::log('authenticate: failed login attempt: ' . notags($username) . ' from IP ' . $_SERVER['REMOTE_ADDR']);
 151                         info('Login failed. Please check your credentials.' . EOL);
 152                         $a->internalRedirect();
 153                 }
 154
 155                 if (!$remember) {
 156                         Authentication::setCookie(0); // 0 means delete on browser exit
 157                 }
 158
 159                 // if we haven't failed up this point, log them in.
 160                 $_SESSION['remember'] = $remember;
 161                 $_SESSION['last_login_date'] = DateTimeFormat::utcNow();
 162                 Authentication::setAuthenticatedSessionForUser($record, true, true);
 163
 164                 if (x($_SESSION, 'return_path')) {
 165                         $return_path = $_SESSION['return_path'];
 166                         unset($_SESSION['return_path']);
 167                 } else {
 168                         $return_path = '';
 169                 }
 170
 171                 $a->internalRedirect($return_path);
 172         }
 173
 174         /**
 175          * @brief Tries to auth the user from the cookie or session
 176          *
 177          * @todo Should be moved to Friendica\Core\Session when it's created
 178          */
 179         public static function sessionAuth()
 180         {
 181                 $a = self::getApp();
 182
 183                 // When the "Friendica" cookie is set, take the value to authenticate and renew the cookie.
 184                 if (isset($_COOKIE["Friendica"])) {
 185                         $data = json_decode($_COOKIE["Friendica"]);
 186                         if (isset($data->uid)) {
 187
 188                                 $user = DBA::selectFirst('user', [],
 189                                         [
 190                                                 'uid'             => $data->uid,
 191                                                 'blocked'         => false,
 192                                                 'account_expired' => false,
 193                                                 'account_removed' => false,
 194                                                 'verified'        => true,
 195                                         ]
 196                                 );
 197                                 if (DBA::isResult($user)) {
 198                                         if ($data->hash != Authentication::getCookieHashForUser($user)) {
 199                                                 Logger::log("Hash for user " . $data->uid . " doesn't fit.");
 200                                                 Authentication::deleteSession();
 201                                                 $a->internalRedirect();
 202                                         }
 203
 204                                         // Renew the cookie
 205                                         // Expires after 7 days by default,
 206                                         // can be set via system.auth_cookie_lifetime
 207                                         $authcookiedays = Config::get('system', 'auth_cookie_lifetime', 7);
 208                                         Authentication::setCookie($authcookiedays * 24 * 60 * 60, $user);
 209
 210                                         // Do the authentification if not done by now
 211                                         if (!isset($_SESSION) || !isset($_SESSION['authenticated'])) {
 212                                                 Authentication::setAuthenticatedSessionForUser($user);
 213
 214                                                 if (Config::get('system', 'paranoia')) {
 215                                                         $_SESSION['addr'] = $data->ip;
 216                                                 }
 217                                         }
 218                                 }
 219                         }
 220                 }
 221
 222                 if (isset($_SESSION) && x($_SESSION, 'authenticated')) {
 223                         if (x($_SESSION, 'visitor_id') && !x($_SESSION, 'uid')) {
 224                                 $contact = DBA::selectFirst('contact', [], ['id' => $_SESSION['visitor_id']]);
 225                                 if (DBA::isResult($contact)) {
 226                                         self::getApp()->contact = $contact;
 227                                 }
 228                         }
 229
 230                         if (x($_SESSION, 'uid')) {
 231                                 // already logged in user returning
 232                                 $check = Config::get('system', 'paranoia');
 233                                 // extra paranoia - if the IP changed, log them out
 234                                 if ($check && ($_SESSION['addr'] != $_SERVER['REMOTE_ADDR'])) {
 235                                         Logger::log('Session address changed. Paranoid setting in effect, blocking session. ' .
 236                                                 $_SESSION['addr'] . ' != ' . $_SERVER['REMOTE_ADDR']);
 237                                         Authentication::deleteSession();
 238                                         $a->internalRedirect();
 239                                 }
 240
 241                                 $user = DBA::selectFirst('user', [],
 242                                         [
 243                                                 'uid'             => $_SESSION['uid'],
 244                                                 'blocked'         => false,
 245                                                 'account_expired' => false,
 246                                                 'account_removed' => false,
 247                                                 'verified'        => true,
 248                                         ]
 249                                 );
 250                                 if (!DBA::isResult($user)) {
 251                                         Authentication::deleteSession();
 252                                         $a->internalRedirect();
 253                                 }
 254
 255                                 // Make sure to refresh the last login time for the user if the user
 256                                 // stays logged in for a long time, e.g. with "Remember Me"
 257                                 $login_refresh = false;
 258                                 if (empty($_SESSION['last_login_date'])) {
 259                                         $_SESSION['last_login_date'] = DateTimeFormat::utcNow();
 260                                 }
 261                                 if (strcmp(DateTimeFormat::utc('now - 12 hours'), $_SESSION['last_login_date']) > 0) {
 262                                         $_SESSION['last_login_date'] = DateTimeFormat::utcNow();
 263                                         $login_refresh = true;
 264                                 }
 265                                 Authentication::setAuthenticatedSessionForUser($user, false, false, $login_refresh);
 266                         }
 267                 }
 268         }
 269
 270         /**
 271          * @brief Wrapper for adding a login box.
 272          *
 273          * @param string $return_path The path relative to the base the user should be sent
 274          *                                                       back to after login completes
 275          * @param bool $register If $register == true provide a registration link.
 276          *                                               This will most always depend on the value of config.register_policy.
 277          * @param array $hiddens  optional
 278          *
 279          * @return string Returns the complete html for inserting into the page
 280          *
 281          * @hooks 'login_hook' string $o
 282          */
 283         public static function form($return_path = null, $register = false, $hiddens = [])
 284         {
 285                 $a = self::getApp();
 286                 $o = '';
 287                 $reg = false;
 288                 if ($register) {
 289                         $reg = [
 290                                 'title' => L10n::t('Create a New Account'),
 291                                 'desc' => L10n::t('Register')
 292                         ];
 293                 }
 294
 295                 $noid = Config::get('system', 'no_openid');
 296
 297                 if (is_null($return_path)) {
 298                         $return_path = $a->query_string;
 299                 }
 300
 301                 if (local_user()) {
 302                         $tpl = get_markup_template('logout.tpl');
 303                 } else {
 304                         $a->page['htmlhead'] .= replace_macros(
 305                                 get_markup_template('login_head.tpl'),
 306                                 [
 307                                         '$baseurl' => $a->getBaseURL(true)
 308                                 ]
 309                         );
 310
 311                         $tpl = get_markup_template('login.tpl');
 312                         $_SESSION['return_path'] = $return_path;
 313                 }
 314
 315                 $o .= replace_macros(
 316                         $tpl,
 317                         [
 318                                 '$dest_url'     => self::getApp()->getBaseURL(true) . '/login',
 319                                 '$logout'       => L10n::t('Logout'),
 320                                 '$login'        => L10n::t('Login'),
 321
 322                                 '$lname'        => ['username', L10n::t('Nickname or Email: ') , '', ''],
 323                                 '$lpassword'    => ['password', L10n::t('Password: '), '', ''],
 324                                 '$lremember'    => ['remember', L10n::t('Remember me'), 0,  ''],
 325
 326                                 '$openid'       => !$noid,
 327                                 '$lopenid'      => ['openid_url', L10n::t('Or login using OpenID: '),'',''],
 328
 329                                 '$hiddens'      => $hiddens,
 330
 331                                 '$register'     => $reg,
 332
 333                                 '$lostpass'     => L10n::t('Forgot your password?'),
 334                                 '$lostlink'     => L10n::t('Password Reset'),
 335
 336                                 '$tostitle'     => L10n::t('Website Terms of Service'),
 337                                 '$toslink'      => L10n::t('terms of service'),
 338
 339                                 '$privacytitle' => L10n::t('Website Privacy Policy'),
 340                                 '$privacylink'  => L10n::t('privacy policy'),
 341                         ]
 342                 );
 343
 344                 Addon::callHooks('login_hook', $o);
 345
 346                 return $o;
 347         }
 348 }