include/auth.php

   1 <?php
   2
   3 use Friendica\App;
   4 use Friendica\Core\Config;
   5
   6 require_once('include/security.php');
   7 require_once('include/datetime.php');
   8
   9 // When the "Friendica" cookie is set, take the value to authenticate and renew the cookie.
  10 if (isset($_COOKIE["Friendica"])) {
  11         $data = json_decode($_COOKIE["Friendica"]);
  12         if (isset($data->uid)) {
  13                 $r = q("SELECT `user`.*, `user`.`pubkey` as `upubkey`, `user`.`prvkey` as `uprvkey`
  14                 FROM `user` WHERE `uid` = %d AND NOT `blocked` AND NOT `account_expired` AND NOT `account_removed` AND `verified` LIMIT 1",
  15                         intval($data->uid)
  16                 );
  17
  18                 if ($r) {
  19                         if ($data->hash != cookie_hash($r[0])) {
  20                                 logger("Hash for user ".$data->uid." doesn't fit.");
  21                                 nuke_session();
  22                                 goaway(z_root());
  23                         }
  24
  25                         // Renew the cookie
  26                         // Expires after 7 days by default,
  27                         // can be set via system.auth_cookie_lifetime
  28                         $authcookiedays = Config::get('system', 'auth_cookie_lifetime', 7);
  29                         new_cookie($authcookiedays*24*60*60, $r[0]);
  30
  31                         // Do the authentification if not done by now
  32                         if (!isset($_SESSION) OR !isset($_SESSION['authenticated'])) {
  33                                 authenticate_success($r[0]);
  34
  35                                 if (get_config('system','paranoia'))
  36                                         $_SESSION['addr'] = $data->ip;
  37                         }
  38                 }
  39         }
  40 }
  41
  42
  43 // login/logout
  44
  45 if (isset($_SESSION) && x($_SESSION,'authenticated') && (!x($_POST,'auth-params') || ($_POST['auth-params'] !== 'login'))) {
  46
  47         if ((x($_POST,'auth-params') && ($_POST['auth-params'] === 'logout')) || ($a->module === 'logout')) {
  48
  49                 // process logout request
  50                 call_hooks("logging_out");
  51                 nuke_session();
  52                 info(t('Logged out.').EOL);
  53                 goaway(z_root());
  54         }
  55
  56         if (x($_SESSION,'visitor_id') && !x($_SESSION,'uid')) {
  57                 $r = q("SELECT * FROM `contact` WHERE `id` = %d LIMIT 1",
  58                         intval($_SESSION['visitor_id'])
  59                 );
  60                 if (dbm::is_result($r)) {
  61                         $a->contact = $r[0];
  62                 }
  63         }
  64
  65         if (x($_SESSION,'uid')) {
  66
  67                 // already logged in user returning
  68
  69                 $check = get_config('system','paranoia');
  70                 // extra paranoia - if the IP changed, log them out
  71                 if ($check && ($_SESSION['addr'] != $_SERVER['REMOTE_ADDR'])) {
  72                         logger('Session address changed. Paranoid setting in effect, blocking session. '.
  73                                 $_SESSION['addr'].' != '.$_SERVER['REMOTE_ADDR']);
  74                         nuke_session();
  75                         goaway(z_root());
  76                 }
  77
  78                 $r = q("SELECT `user`.*, `user`.`pubkey` as `upubkey`, `user`.`prvkey` as `uprvkey`
  79                 FROM `user` WHERE `uid` = %d AND NOT `blocked` AND NOT `account_expired` AND NOT `account_removed` AND `verified` LIMIT 1",
  80                         intval($_SESSION['uid'])
  81                 );
  82
  83                 if (!dbm::is_result($r)) {
  84                         nuke_session();
  85                         goaway(z_root());
  86                 }
  87
  88                 // Make sure to refresh the last login time for the user if the user
  89                 // stays logged in for a long time, e.g. with "Remember Me"
  90                 $login_refresh = false;
  91                 if (!x($_SESSION['last_login_date'])) {
  92                         $_SESSION['last_login_date'] = datetime_convert('UTC','UTC');
  93                 }
  94                 if (strcmp(datetime_convert('UTC','UTC','now - 12 hours'), $_SESSION['last_login_date']) > 0) {
  95
  96                         $_SESSION['last_login_date'] = datetime_convert('UTC','UTC');
  97                         $login_refresh = true;
  98                 }
  99                 authenticate_success($r[0], false, false, $login_refresh);
 100         }
 101 } else {
 102
 103         session_unset();
 104
 105         if (x($_POST,'password') && strlen($_POST['password']))
 106                 $encrypted = hash('whirlpool',trim($_POST['password']));
 107         else {
 108                 if ((x($_POST,'openid_url')) && strlen($_POST['openid_url']) ||
 109                    (x($_POST,'username')) && strlen($_POST['username'])) {
 110
 111                         $noid = get_config('system','no_openid');
 112
 113                         $openid_url = trim((strlen($_POST['openid_url'])?$_POST['openid_url']:$_POST['username']));
 114
 115                         // validate_url alters the calling parameter
 116
 117                         $temp_string = $openid_url;
 118
 119                         // if it's an email address or doesn't resolve to a URL, fail.
 120
 121                         if ($noid || strpos($temp_string,'@') || !validate_url($temp_string)) {
 122                                 $a = get_app();
 123                                 notice(t('Login failed.').EOL);
 124                                 goaway(z_root());
 125                                 // NOTREACHED
 126                         }
 127
 128                         // Otherwise it's probably an openid.
 129
 130                         try {
 131                                 require_once('library/openid.php');
 132                                 $openid = new LightOpenID;
 133                                 $openid->identity = $openid_url;
 134                                 $_SESSION['openid'] = $openid_url;
 135                                 $_SESSION['remember'] = $_POST['remember'];
 136                                 $openid->returnUrl = App::get_baseurl(true).'/openid';
 137                                 goaway($openid->authUrl());
 138                         } catch (Exception $e) {
 139                                 notice(t('We encountered a problem while logging in with the OpenID you provided. Please check the correct spelling of the ID.').'<br /><br >'.t('The error message was:').' '.$e->getMessage());
 140                         }
 141                         // NOTREACHED
 142                 }
 143         }
 144
 145         if (x($_POST,'auth-params') && $_POST['auth-params'] === 'login') {
 146
 147                 $record = null;
 148
 149                 $addon_auth = array(
 150                         'username' => trim($_POST['username']),
 151                         'password' => trim($_POST['password']),
 152                         'authenticated' => 0,
 153                         'user_record' => null
 154                 );
 155
 156                 /**
 157                  *
 158                  * A plugin indicates successful login by setting 'authenticated' to non-zero value and returning a user record
 159                  * Plugins should never set 'authenticated' except to indicate success - as hooks may be chained
 160                  * and later plugins should not interfere with an earlier one that succeeded.
 161                  *
 162                  */
 163
 164                 call_hooks('authenticate', $addon_auth);
 165
 166                 if ($addon_auth['authenticated'] && count($addon_auth['user_record']))
 167                         $record = $addon_auth['user_record'];
 168                 else {
 169
 170                         // process normal login request
 171
 172                         $r = q("SELECT `user`.*, `user`.`pubkey` as `upubkey`, `user`.`prvkey` as `uprvkey`
 173                                 FROM `user` WHERE (`email` = '%s' OR `nickname` = '%s')
 174                                 AND `password` = '%s' AND NOT `blocked` AND NOT `account_expired` AND NOT `account_removed` AND `verified` LIMIT 1",
 175                                 dbesc(trim($_POST['username'])),
 176                                 dbesc(trim($_POST['username'])),
 177                                 dbesc($encrypted)
 178                         );
 179                         if (dbm::is_result($r))
 180                                 $record = $r[0];
 181                 }
 182
 183                 if (!$record || !count($record)) {
 184                         logger('authenticate: failed login attempt: '.notags(trim($_POST['username'])).' from IP '.$_SERVER['REMOTE_ADDR']);
 185                         notice(t('Login failed.').EOL);
 186                         goaway(z_root());
 187                 }
 188
 189                 if (! $_POST['remember']) {
 190                         new_cookie(0); // 0 means delete on browser exit
 191                 }
 192
 193                 // if we haven't failed up this point, log them in.
 194                 $_SESSION['remember'] = $_POST['remember'];
 195                 $_SESSION['last_login_date'] = datetime_convert('UTC','UTC');
 196                 authenticate_success($record, true, true);
 197         }
 198 }
 199
 200 /**
 201  * @brief Kills the "Friendica" cookie and all session data
 202  */
 203 function nuke_session() {
 204
 205         new_cookie(-3600); // make sure cookie is deleted on browser close, as a security measure
 206         session_unset();
 207         session_destroy();
 208 }