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<?php /** @file */
require_once('include/security.php');
function nuke_session() {
new_cookie(0);
unset($_SESSION['authenticated']);
unset($_SESSION['account_id']);
unset($_SESSION['uid']);
unset($_SESSION['visitor_id']);
unset($_SESSION['administrator']);
unset($_SESSION['cid']);
unset($_SESSION['theme']);
unset($_SESSION['mobile_theme']);
unset($_SESSION['show_mobile']);
unset($_SESSION['page_flags']);
unset($_SESSION['submanage']);
unset($_SESSION['my_url']);
unset($_SESSION['my_address']);
unset($_SESSION['addr']);
unset($_SESSION['return_url']);
unset($_SESSION['remote_service_class']);
unset($_SESSION['remote_hub']);
}
/**
* Verify login credentials
*
* Returns account record on success, null on failure
*
*/
function account_verify_password($email,$pass) {
$email_verify = get_config('system','verify_email');
if($email_verify && $record['account_flags'] & ACCOUNT_UNVERIFIED)
return null;
$r = q("select * from account where account_email = '%s'",
dbesc($email)
);
if(! ($r && count($r)))
return null;
foreach($r as $record) {
if(($record['account_flags'] == ACCOUNT_OK)
&& (hash('whirlpool',$record['account_salt'] . $pass) === $record['account_password'])) {
logger('password verified for ' . $email);
return $record;
}
}
$error = 'password failed for ' . $email;
logger($error);
// Also log failed logins to a separate auth log to reduce overhead for server side intrusion prevention
$authlog = get_config('system', 'authlog');
if ($authlog)
@file_put_contents($authlog, datetime_convert() . ':' . session_id() . ' ' . $error . "\n", FILE_APPEND);
return null;
}
/**
* Inline - not a function
* look for auth parameters or re-validate an existing session
* also handles logout
*/
if((isset($_SESSION)) && (x($_SESSION,'authenticated')) && ((! (x($_POST,'auth-params'))) || ($_POST['auth-params'] !== 'login'))) {
// process a logout request
if(((x($_POST,'auth-params')) && ($_POST['auth-params'] === 'logout')) || ($a->module === 'logout')) {
// process logout request
$args = array('channel_id' => local_user());
call_hooks('logging_out', $args);
nuke_session();
info( t('Logged out.') . EOL);
goaway(z_root());
}
// re-validate a visitor, optionally invoke "su" if permitted to do so
if(x($_SESSION,'visitor_id') && (! x($_SESSION,'uid'))) {
// if our authenticated guest is allowed to take control of the admin channel, make it so.
$admins = get_config('system','remote_admin');
if($admins && is_array($admins) && in_array($_SESSION['visitor_id'],$admins)) {
$x = q("select * from account where account_email = '%s' and account_email != '' and ( account_flags & %d ) limit 1",
dbesc(get_config('system','admin_email')),
intval(ACCOUNT_ROLE_ADMIN)
);
if($x) {
new_cookie(60*60*24); // one day
$_SESSION['last_login_date'] = datetime_convert();
unset($_SESSION['visitor_id']); // no longer a visitor
authenticate_success($x[0], true, true);
}
}
$r = q("select * from xchan left join hubloc on xchan_hash = hubloc_hash where xchan_hash = '%s' limit 1",
dbesc($_SESSION['visitor_id'])
);
if($r) {
get_app()->set_observer($r[0]);
}
else {
unset($_SESSION['visitor_id']);
unset($_SESSION['authenticated']);
}
$a->set_groups(init_groups_visitor($_SESSION['visitor_id']));
}
// already logged in user returning
if(x($_SESSION,'uid') || x($_SESSION,'account_id')) {
// first check if we're enforcing that sessions can't change IP address
if($_SESSION['addr'] != $_SERVER['REMOTE_ADDR']) {
logger('SECURITY: Session IP address changed: ' . $_SESSION['addr'] . ' != ' . $_SERVER['REMOTE_ADDR']);
if(get_config('system','paranoia')) {
logger('Session address changed. Paranoid setting in effect, blocking session. '
. $_SESSION['addr'] . ' != ' . $_SERVER['REMOTE_ADDR']);
nuke_session();
goaway(z_root());
}
}
$r = q("select * from account where account_id = %d limit 1",
intval($_SESSION['account_id'])
);
if(($r) && (($r[0]['account_flags'] == ACCOUNT_OK) || ($r[0]['account_flags'] == ACCOUNT_UNVERIFIED))) {
get_app()->account = $r[0];
$login_refresh = false;
if(! x($_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();
$login_refresh = true;
}
authenticate_success($r[0], false, false, false, $login_refresh);
}
else {
$_SESSION['account_id'] = 0;
nuke_session();
goaway(z_root());
}
}
}
else {
if(isset($_SESSION)) {
nuke_session();
}
// handle a fresh login request
if((x($_POST,'password')) && strlen($_POST['password']))
$encrypted = hash('whirlpool',trim($_POST['password']));
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 {
$record = get_app()->account = account_verify_password($_POST['username'],$_POST['password']);
if(get_app()->account) {
$_SESSION['account_id'] = get_app()->account['account_id'];
}
else {
notice( t('Failed authentication') . EOL);
}
logger('authenticate: ' . print_r(get_app()->account,true), LOGGER_DEBUG);
}
if((! $record) || (! count($record))) {
$error = 'authenticate: failed login attempt: ' . notags(trim($_POST['username'])) . ' from IP ' . $_SERVER['REMOTE_ADDR'];
logger($error);
// Also log failed logins to a separate auth log to reduce overhead for server side intrusion prevention
$authlog = get_config('system', 'authlog');
if ($authlog)
@file_put_contents($authlog, datetime_convert() . ':' . session_id() . ' ' . $error . "\n", FILE_APPEND);
notice( t('Login failed.') . EOL );
goaway(z_root());
}
// If the user specified to remember the authentication, then change the cookie
// to expire after one year (the default is when the browser is closed).
// If the user did not specify to remember, change the cookie to expire when the
// browser is closed. The reason this is necessary is because if the user
// specifies to remember, then logs out and logs back in without specifying to
// remember, the old "remember" cookie may remain and prevent the session from
// expiring when the browser is closed.
//
// It seems like I should be able to test for the old cookie, but for some reason when
// I read the lifetime value from session_get_cookie_params(), I always get '0'
// (i.e. expire when the browser is closed), even when there's a time expiration
// on the cookie
if($_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.
$_SESSION['last_login_date'] = datetime_convert();
authenticate_success($record, true, true);
}
}
function match_openid($authid) {
$r = q("select * from pconfig where cat = 'system' and k = 'openid' and v = '%s' limit 1",
dbesc($authid)
);
if($r)
return $r[0]['uid'];
return false;
}
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