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
require_once('include/security.php');
require_once('include/datetime.php');
function nuke_session() {
new_cookie(0); // make sure cookie is deleted on browser close, as a security measure
unset($_SESSION['authenticated']);
unset($_SESSION['uid']);
unset($_SESSION['visitor_id']);
unset($_SESSION['administrator']);
unset($_SESSION['cid']);
unset($_SESSION['theme']);
unset($_SESSION['mobile-theme']);
unset($_SESSION['page_flags']);
unset($_SESSION['submanage']);
unset($_SESSION['my_url']);
unset($_SESSION['my_address']);
unset($_SESSION['addr']);
unset($_SESSION['return_url']);
}
// login/logout
if((isset($_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(z_root());
}
if(x($_SESSION,'visitor_id') && (! x($_SESSION,'uid'))) {
$r = q("SELECT * FROM `contact` WHERE `id` = %d LIMIT 1",
intval($_SESSION['visitor_id'])
);
if(count($r)) {
$a->contact = $r[0];
}
}
if(x($_SESSION,'uid')) {
// already logged in user returning
$check = get_config('system','paranoia');
// extra paranoia - if the IP changed, log them out
if($check && ($_SESSION['addr'] != $_SERVER['REMOTE_ADDR'])) {
logger('Session address changed. Paranoid setting in effect, blocking session. '
. $_SESSION['addr'] . ' != ' . $_SERVER['REMOTE_ADDR']);
nuke_session();
goaway(z_root());
}
$r = q("SELECT `user`.*, `user`.`pubkey` as `upubkey`, `user`.`prvkey` as `uprvkey`
FROM `user` WHERE `uid` = %d AND `blocked` = 0 AND `account_expired` = 0 AND `account_removed` = 0 AND `verified` = 1 LIMIT 1",
intval($_SESSION['uid'])
);
if(! count($r)) {
nuke_session();
goaway(z_root());
}
// 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, $login_refresh);
}
}
else {
if(isset($_SESSION)) {
nuke_session();
}
if((x($_POST,'password')) && strlen($_POST['password']))
$encrypted = hash('whirlpool',trim($_POST['password']));
else {
if((x($_POST,'openid_url')) && strlen($_POST['openid_url']) ||
(x($_POST,'username')) && strlen($_POST['username'])) {
$noid = get_config('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(z_root());
// NOTREACHED
}
// Otherwise it's probably an openid.
try {
require_once('library/openid.php');
$openid = new LightOpenID;
$openid->identity = $openid_url;
$_SESSION['openid'] = $openid_url;
$a = get_app();
$openid->returnUrl = $a->get_baseurl(true) . '/openid';
goaway($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 {
// process normal login request
$r = q("SELECT `user`.*, `user`.`pubkey` as `upubkey`, `user`.`prvkey` as `uprvkey`
FROM `user` WHERE ( `email` = '%s' OR `nickname` = '%s' )
AND `password` = '%s' AND `blocked` = 0 AND `account_expired` = 0 AND `account_removed` = 0 AND `verified` = 1 LIMIT 1",
dbesc(trim($_POST['username'])),
dbesc(trim($_POST['username'])),
dbesc($encrypted)
);
if(count($r))
$record = $r[0];
}
if((! $record) || (! count($record))) {
logger('authenticate: failed login attempt: ' . notags(trim($_POST['username'])) . ' from IP ' . $_SERVER['REMOTE_ADDR']);
notice( t('Login failed.') . EOL );
goaway(z_root());
}
// If the user specified to remember the authentication, then change the cookie
// to expire after one year (the default is when the browser is closed).
// If the user did not specify to remember, change the cookie to expire when the
// browser is closed. The reason this is necessary is because if the user
// specifies to remember, then logs out and logs back in without specifying to
// remember, the old "remember" cookie may remain and prevent the session from
// expiring when the browser is closed.
//
// It seems like I should be able to test for the old cookie, but for some reason when
// I read the lifetime value from session_get_cookie_params(), I always get '0'
// (i.e. expire when the browser is closed), even when there's a time expiration
// on the cookie
if($_POST['remember']) {
new_cookie(31449600); // one year
}
else {
new_cookie(0); // 0 means delete on browser exit
}
// if we haven't failed up this point, log them in.
$_SESSION['last_login_date'] = datetime_convert('UTC','UTC');
authenticate_success($record, true, true);
}
}
function new_cookie($time) {
$old_sid = session_id();
session_set_cookie_params("$time");
session_regenerate_id(false);
q("UPDATE session SET sid = '%s' WHERE sid = '%s'", dbesc(session_id()), dbesc($old_sid));
}