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\Renderer;
  15 use Friendica\Core\System;
  16 use Friendica\Database\DBA;
  17 use Friendica\Model\User;
  18 use Friendica\Util\DateTimeFormat;
  19 use Friendica\Util\Network;
  20 use LightOpenID;
  21
  22 require_once 'boot.php';
  23 require_once 'include/text.php';
  24
  25 /**
  26  * Login module
  27  *
  28  * @author Hypolite Petovan <hypolite@mrpetovan.com>
  29  */
  30 class Login extends BaseModule
  31 {
  32         public static function content()
  33         {
  34                 $a = self::getApp();
  35
  36                 if (x($_SESSION, 'theme')) {
  37                         unset($_SESSION['theme']);
  38                 }
  39
  40                 if (x($_SESSION, 'mobile-theme')) {
  41                         unset($_SESSION['mobile-theme']);
  42                 }
  43
  44                 if (local_user()) {
  45                         $a->internalRedirect();
  46                 }
  47
  48                 return self::form($_SESSION['return_path'], intval(Config::get('config', 'register_policy')) !== REGISTER_CLOSED);
  49         }
  50
  51         public static function post()
  52         {
  53                 $return_path = $_SESSION['return_path'];
  54                 session_unset();
  55                 $_SESSION['return_path'] = $return_path;
  56
  57                 // OpenId Login
  58                 if (
  59                         empty($_POST['password'])
  60                         && (
  61                                 !empty($_POST['openid_url'])
  62                                 || !empty($_POST['username'])
  63                         )
  64                 ) {
  65                         $openid_url = trim(defaults($_POST, 'openid_url', $_POST['username']));
  66
  67                         self::openIdAuthentication($openid_url, !empty($_POST['remember']));
  68                 }
  69
  70                 if (x($_POST, 'auth-params') && $_POST['auth-params'] === 'login') {
  71                         self::passwordAuthentication(
  72                                 trim($_POST['username']),
  73                                 trim($_POST['password']),
  74                                 !empty($_POST['remember'])
  75                         );
  76                 }
  77         }
  78
  79         /**
  80          * Attempts to authenticate using OpenId
  81          *
  82          * @param string $openid_url OpenID URL string
  83          * @param bool   $remember   Whether to set the session remember flag
  84          */
  85         private static function openIdAuthentication($openid_url, $remember)
  86         {
  87                 $noid = Config::get('system', 'no_openid');
  88
  89                 $a = self::getApp();
  90
  91                 // if it's an email address or doesn't resolve to a URL, fail.
  92                 if ($noid || strpos($openid_url, '@') || !Network::isUrlValid($openid_url)) {
  93                         notice(L10n::t('Login failed.') . EOL);
  94                         $a->internalRedirect();
  95                         // NOTREACHED
  96                 }
  97
  98                 // Otherwise it's probably an openid.
  99                 try {
 100                         $openid = new LightOpenID($a->getHostName());
 101                         $openid->identity = $openid_url;
 102                         $_SESSION['openid'] = $openid_url;
 103                         $_SESSION['remember'] = $remember;
 104                         $openid->returnUrl = $a->getBaseURL(true) . '/openid';
 105                         System::externalRedirect($openid->authUrl());
 106                 } catch (Exception $e) {
 107                         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());
 108                 }
 109         }
 110
 111         /**
 112          * Attempts to authenticate using login/password
 113          *
 114          * @param string $username User name
 115          * @param string $password Clear password
 116          * @param bool   $remember Whether to set the session remember flag
 117          */
 118         private static function passwordAuthentication($username, $password, $remember)
 119         {
 120                 $record = null;
 121
 122                 $addon_auth = [
 123                         'username' => $username,
 124                         'password' => $password,
 125                         'authenticated' => 0,
 126                         'user_record' => null
 127                 ];
 128
 129                 $a = self::getApp();
 130
 131                 /*
 132                  * An addon indicates successful login by setting 'authenticated' to non-zero value and returning a user record
 133                  * Addons should never set 'authenticated' except to indicate success - as hooks may be chained
 134                  * and later addons should not interfere with an earlier one that succeeded.
 135                  */
 136                 Addon::callHooks('authenticate', $addon_auth);
 137
 138                 try {
 139                         if ($addon_auth['authenticated']) {
 140                                 $record = $addon_auth['user_record'];
 141
 142                                 if (empty($record)) {
 143                                         throw new Exception(L10n::t('Login failed.'));
 144                                 }
 145                         } else {
 146                                 $record = DBA::selectFirst('user', [],
 147                                         ['uid' => User::getIdFromPasswordAuthentication($username, $password)]
 148                                 );
 149                         }
 150                 } catch (Exception $e) {
 151                         Logger::log('authenticate: failed login attempt: ' . notags($username) . ' from IP ' . $_SERVER['REMOTE_ADDR']);
 152                         info('Login failed. Please check your credentials.' . EOL);
 153                         $a->internalRedirect();
 154                 }
 155
 156                 if (!$remember) {
 157                         Authentication::setCookie(0); // 0 means delete on browser exit
 158                 }
 159
 160                 // if we haven't failed up this point, log them in.
 161                 $_SESSION['remember'] = $remember;
 162                 $_SESSION['last_login_date'] = DateTimeFormat::utcNow();
 163                 Authentication::setAuthenticatedSessionForUser($record, true, true);
 164
 165                 if (x($_SESSION, 'return_path')) {
 166                         $return_path = $_SESSION['return_path'];
 167                         unset($_SESSION['return_path']);
 168                 } else {
 169                         $return_path = '';
 170                 }
 171
 172                 $a->internalRedirect($return_path);
 173         }
 174
 175         /**
 176          * @brief Tries to auth the user from the cookie or session
 177          *
 178          * @todo Should be moved to Friendica\Core\Session when it's created
 179          */
 180         public static function sessionAuth()
 181         {
 182                 $a = self::getApp();
 183
 184                 // When the "Friendica" cookie is set, take the value to authenticate and renew the cookie.
 185                 if (isset($_COOKIE["Friendica"])) {
 186                         $data = json_decode($_COOKIE["Friendica"]);
 187                         if (isset($data->uid)) {
 188
 189                                 $user = DBA::selectFirst('user', [],
 190                                         [
 191                                                 'uid'             => $data->uid,
 192                                                 'blocked'         => false,
 193                                                 'account_expired' => false,
 194                                                 'account_removed' => false,
 195                                                 'verified'        => true,
 196                                         ]
 197                                 );
 198                                 if (DBA::isResult($user)) {
 199                                         if ($data->hash != Authentication::getCookieHashForUser($user)) {
 200                                                 Logger::log("Hash for user " . $data->uid . " doesn't fit.");
 201                                                 Authentication::deleteSession();
 202                                                 $a->internalRedirect();
 203                                         }
 204
 205                                         // Renew the cookie
 206                                         // Expires after 7 days by default,
 207                                         // can be set via system.auth_cookie_lifetime
 208                                         $authcookiedays = Config::get('system', 'auth_cookie_lifetime', 7);
 209                                         Authentication::setCookie($authcookiedays * 24 * 60 * 60, $user);
 210
 211                                         // Do the authentification if not done by now
 212                                         if (!isset($_SESSION) || !isset($_SESSION['authenticated'])) {
 213                                                 Authentication::setAuthenticatedSessionForUser($user);
 214
 215                                                 if (Config::get('system', 'paranoia')) {
 216                                                         $_SESSION['addr'] = $data->ip;
 217                                                 }
 218                                         }
 219                                 }
 220                         }
 221                 }
 222
 223                 if (isset($_SESSION) && x($_SESSION, 'authenticated')) {
 224                         if (x($_SESSION, 'visitor_id') && !x($_SESSION, 'uid')) {
 225                                 $contact = DBA::selectFirst('contact', [], ['id' => $_SESSION['visitor_id']]);
 226                                 if (DBA::isResult($contact)) {
 227                                         self::getApp()->contact = $contact;
 228                                 }
 229                         }
 230
 231                         if (x($_SESSION, 'uid')) {
 232                                 // already logged in user returning
 233                                 $check = Config::get('system', 'paranoia');
 234                                 // extra paranoia - if the IP changed, log them out
 235                                 if ($check && ($_SESSION['addr'] != $_SERVER['REMOTE_ADDR'])) {
 236                                         Logger::log('Session address changed. Paranoid setting in effect, blocking session. ' .
 237                                                 $_SESSION['addr'] . ' != ' . $_SERVER['REMOTE_ADDR']);
 238                                         Authentication::deleteSession();
 239                                         $a->internalRedirect();
 240                                 }
 241
 242                                 $user = DBA::selectFirst('user', [],
 243                                         [
 244                                                 'uid'             => $_SESSION['uid'],
 245                                                 'blocked'         => false,
 246                                                 'account_expired' => false,
 247                                                 'account_removed' => false,
 248                                                 'verified'        => true,
 249                                         ]
 250                                 );
 251                                 if (!DBA::isResult($user)) {
 252                                         Authentication::deleteSession();
 253                                         $a->internalRedirect();
 254                                 }
 255
 256                                 // Make sure to refresh the last login time for the user if the user
 257                                 // stays logged in for a long time, e.g. with "Remember Me"
 258                                 $login_refresh = false;
 259                                 if (empty($_SESSION['last_login_date'])) {
 260                                         $_SESSION['last_login_date'] = DateTimeFormat::utcNow();
 261                                 }
 262                                 if (strcmp(DateTimeFormat::utc('now - 12 hours'), $_SESSION['last_login_date']) > 0) {
 263                                         $_SESSION['last_login_date'] = DateTimeFormat::utcNow();
 264                                         $login_refresh = true;
 265                                 }
 266                                 Authentication::setAuthenticatedSessionForUser($user, false, false, $login_refresh);
 267                         }
 268                 }
 269         }
 270
 271         /**
 272          * @brief Wrapper for adding a login box.
 273          *
 274          * @param string $return_path The path relative to the base the user should be sent
 275          *                                                       back to after login completes
 276          * @param bool $register If $register == true provide a registration link.
 277          *                                               This will most always depend on the value of config.register_policy.
 278          * @param array $hiddens  optional
 279          *
 280          * @return string Returns the complete html for inserting into the page
 281          *
 282          * @hooks 'login_hook' string $o
 283          */
 284         public static function form($return_path = null, $register = false, $hiddens = [])
 285         {
 286                 $a = self::getApp();
 287                 $o = '';
 288                 $reg = false;
 289                 if ($register) {
 290                         $reg = [
 291                                 'title' => L10n::t('Create a New Account'),
 292                                 'desc' => L10n::t('Register')
 293                         ];
 294                 }
 295
 296                 $noid = Config::get('system', 'no_openid');
 297
 298                 if (is_null($return_path)) {
 299                         $return_path = $a->query_string;
 300                 }
 301
 302                 if (local_user()) {
 303                         $tpl = Renderer::getMarkupTemplate('logout.tpl');
 304                 } else {
 305                         $a->page['htmlhead'] .= Renderer::replaceMacros(
 306                                 Renderer::getMarkupTemplate('login_head.tpl'),
 307                                 [
 308                                         '$baseurl' => $a->getBaseURL(true)
 309                                 ]
 310                         );
 311
 312                         $tpl = Renderer::getMarkupTemplate('login.tpl');
 313                         $_SESSION['return_path'] = $return_path;
 314                 }
 315
 316                 $o .= Renderer::replaceMacros(
 317                         $tpl,
 318                         [
 319                                 '$dest_url'     => self::getApp()->getBaseURL(true) . '/login',
 320                                 '$logout'       => L10n::t('Logout'),
 321                                 '$login'        => L10n::t('Login'),
 322
 323                                 '$lname'        => ['username', L10n::t('Nickname or Email: ') , '', ''],
 324                                 '$lpassword'    => ['password', L10n::t('Password: '), '', ''],
 325                                 '$lremember'    => ['remember', L10n::t('Remember me'), 0,  ''],
 326
 327                                 '$openid'       => !$noid,
 328                                 '$lopenid'      => ['openid_url', L10n::t('Or login using OpenID: '),'',''],
 329
 330                                 '$hiddens'      => $hiddens,
 331
 332                                 '$register'     => $reg,
 333
 334                                 '$lostpass'     => L10n::t('Forgot your password?'),
 335                                 '$lostlink'     => L10n::t('Password Reset'),
 336
 337                                 '$tostitle'     => L10n::t('Website Terms of Service'),
 338                                 '$toslink'      => L10n::t('terms of service'),
 339
 340                                 '$privacytitle' => L10n::t('Website Privacy Policy'),
 341                                 '$privacylink'  => L10n::t('privacy policy'),
 342                         ]
 343                 );
 344
 345                 Addon::callHooks('login_hook', $o);
 346
 347                 return $o;
 348         }
 349 }