include/auth.php

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