Friendica Communications Platform (please note that this is a clone of the repository at github, issues are handled there) https://friendi.ca
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<?php
use Friendica\App;
use Friendica\Core\System;
use Friendica\Core\Config;
use Friendica\Database\DBM;
use Friendica\Model\User;
require_once 'include/security.php';
require_once 'include/datetime.php';
// When the "Friendica" cookie is set, take the value to authenticate and renew the cookie.
if (isset($_COOKIE["Friendica"])) {
$data = json_decode($_COOKIE["Friendica"]);
if (isset($data->uid)) {
$r = q("SELECT `user`.*, `user`.`pubkey` as `upubkey`, `user`.`prvkey` as `uprvkey`
FROM `user` WHERE `uid` = %d AND NOT `blocked` AND NOT `account_expired` AND NOT `account_removed` AND `verified` LIMIT 1",
intval($data->uid)
);
if ($r) {
if ($data->hash != cookie_hash($r[0])) {
logger("Hash for user " . $data->uid . " doesn't fit.");
nuke_session();
goaway(System::baseUrl());
}
// Renew the cookie
// Expires after 7 days by default,
// can be set via system.auth_cookie_lifetime
$authcookiedays = Config::get('system', 'auth_cookie_lifetime', 7);
new_cookie($authcookiedays * 24 * 60 * 60, $r[0]);
// Do the authentification if not done by now
if (!isset($_SESSION) || !isset($_SESSION['authenticated'])) {
authenticate_success($r[0]);
if (Config::get('system', 'paranoia')) {
$_SESSION['addr'] = $data->ip;
}
}
}
}
}
// login/logout
if (isset($_SESSION) && x($_SESSION, 'authenticated') && (!x($_POST, 'auth-params') || ($_POST['auth-params'] !== 'login'))) {
if ((x($_POST, 'auth-params') && ($_POST['auth-params'] === 'logout')) || ($a->module === 'logout')) {
// process logout request
call_hooks("logging_out");
nuke_session();
info(t('Logged out.') . EOL);
goaway(System::baseUrl());
}
if (x($_SESSION, 'visitor_id') && !x($_SESSION, 'uid')) {
$r = q("SELECT * FROM `contact` WHERE `id` = %d LIMIT 1",
intval($_SESSION['visitor_id'])
);
if (DBM::is_result($r)) {
$a->contact = $r[0];
}
}
if (x($_SESSION, 'uid')) {
// already logged in user returning
$check = Config::get('system', 'paranoia');
// extra paranoia - if the IP changed, log them out
if ($check && ($_SESSION['addr'] != $_SERVER['REMOTE_ADDR'])) {
logger('Session address changed. Paranoid setting in effect, blocking session. ' .
$_SESSION['addr'] . ' != ' . $_SERVER['REMOTE_ADDR']);
nuke_session();
goaway(System::baseUrl());
}
$r = q("SELECT `user`.*, `user`.`pubkey` as `upubkey`, `user`.`prvkey` as `uprvkey`
FROM `user` WHERE `uid` = %d AND NOT `blocked` AND NOT `account_expired` AND NOT `account_removed` AND `verified` LIMIT 1",
intval($_SESSION['uid'])
);
if (!DBM::is_result($r)) {
nuke_session();
goaway(System::baseUrl());
}
// Make sure to refresh the last login time for the user if the user
// stays logged in for a long time, e.g. with "Remember Me"
$login_refresh = false;
if (!x($_SESSION['last_login_date'])) {
$_SESSION['last_login_date'] = datetime_convert('UTC', 'UTC');
}
if (strcmp(datetime_convert('UTC', 'UTC', 'now - 12 hours'), $_SESSION['last_login_date']) > 0) {
$_SESSION['last_login_date'] = datetime_convert('UTC', 'UTC');
$login_refresh = true;
}
authenticate_success($r[0], false, false, $login_refresh);
}
} else {
session_unset();
if (
!(x($_POST, 'password') && strlen($_POST['password']))
&& (
x($_POST, 'openid_url') && strlen($_POST['openid_url'])
|| x($_POST, 'username') && strlen($_POST['username'])
)
) {
$noid = Config::get('system', 'no_openid');
$openid_url = trim(strlen($_POST['openid_url']) ? $_POST['openid_url'] : $_POST['username']);
// validate_url alters the calling parameter
$temp_string = $openid_url;
// if it's an email address or doesn't resolve to a URL, fail.
if ($noid || strpos($temp_string, '@') || !validate_url($temp_string)) {
$a = get_app();
notice(t('Login failed.') . EOL);
goaway(System::baseUrl());
// NOTREACHED
}
// Otherwise it's probably an openid.
try {
require_once('library/openid.php');
$openid = new LightOpenID;
$openid->identity = $openid_url;
$_SESSION['openid'] = $openid_url;
$_SESSION['remember'] = $_POST['remember'];
$openid->returnUrl = System::baseUrl(true) . '/openid';
goaway($openid->authUrl());
} catch (Exception $e) {
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:') . ' ' . $e->getMessage());
}
// NOTREACHED
}
if (x($_POST, 'auth-params') && $_POST['auth-params'] === 'login') {
$record = null;
$addon_auth = array(
'username' => trim($_POST['username']),
'password' => trim($_POST['password']),
'authenticated' => 0,
'user_record' => null
);
/**
*
* A plugin indicates successful login by setting 'authenticated' to non-zero value and returning a user record
* Plugins should never set 'authenticated' except to indicate success - as hooks may be chained
* and later plugins should not interfere with an earlier one that succeeded.
*
*/
call_hooks('authenticate', $addon_auth);
if ($addon_auth['authenticated'] && count($addon_auth['user_record'])) {
$record = $addon_auth['user_record'];
} else {
$user_id = User::authenticate(trim($_POST['username']), trim($_POST['password']));
if ($user_id) {
$record = dba::select('user', [], ['uid' => $user_id], ['limit' => 1]);
}
}
if (!$record || !count($record)) {
logger('authenticate: failed login attempt: ' . notags(trim($_POST['username'])) . ' from IP ' . $_SERVER['REMOTE_ADDR']);
notice(t('Login failed.') . EOL);
goaway(System::baseUrl());
}
if (!$_POST['remember']) {
new_cookie(0); // 0 means delete on browser exit
}
// if we haven't failed up this point, log them in.
$_SESSION['remember'] = $_POST['remember'];
$_SESSION['last_login_date'] = datetime_convert('UTC', 'UTC');
authenticate_success($record, true, true);
}
}
/**
* @brief Kills the "Friendica" cookie and all session data
*/
function nuke_session()
{
new_cookie(-3600); // make sure cookie is deleted on browser close, as a security measure
session_unset();
session_destroy();
}