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<?php
function nuke_session() {
unset($_SESSION['authenticated']);
unset($_SESSION['uid']);
unset($_SESSION['visitor_id']);
unset($_SESSION['administrator']);
unset($_SESSION['cid']);
unset($_SESSION['theme']);
unset($_SESSION['page_flags']);
}
// login/logout
if((isset($_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
nuke_session();
notice( t('Logged out.') . EOL);
goaway($a->get_baseurl());
}
if(x($_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'] != $_SERVER['REMOTE_ADDR'])) {
nuke_session();
goaway($a->get_baseurl());
}
$r = q("SELECT * FROM `user` WHERE `uid` = %d LIMIT 1",
intval($_SESSION['uid'])
);
if(! count($r)) {
nuke_session();
goaway($a->get_baseurl());
}
// initialise user environment
$a->user = $r[0];
$_SESSION['theme'] = $a->user['theme'];
$_SESSION['page_flags'] = $a->user['page-flags'];
if(strlen($a->user['timezone']))
date_default_timezone_set($a->user['timezone']);
$_SESSION['my_url'] = $a->get_baseurl() . '/profile/' . $a->user['nickname'];
$r = q("SELECT * FROM `contact` WHERE `uid` = %d AND `self` = 1 LIMIT 1",
intval($_SESSION['uid']));
if(count($r)) {
$a->contact = $r[0];
$a->cid = $r[0]['id'];
$_SESSION['cid'] = $a->cid;
}
header('X-Account-Management-Status: active; name="' . $a->user['username'] . '"; id="' . $a->user['nickname'] .'"');
}
}
else {
if(isset($_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'])) {
$noid = get_config('system','no_openid');
$openid_url = trim($_POST['openid_url']);
// 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))) {
$a = get_app();
notice( t('Login failed.') . EOL);
goaway($a->get_baseurl());
// NOTREACHED
}
// Otherwise it's probably an openid.
require_once('library/openid.php');
$openid = new LightOpenID;
$openid->identity = $openid_url;
$_SESSION['openid'] = $openid_url;
$a = get_app();
$openid->returnUrl = $a->get_baseurl() . '/openid';
$r = q("SELECT `uid` FROM `user` WHERE `openid` = '%s' LIMIT 1",
dbesc($openid_url)
);
if(count($r)) {
// existing account
goaway($openid->authUrl());
// NOTREACHED
}
else {
if($a->config['register_policy'] == REGISTER_CLOSED) {
$a = get_app();
notice( t('Login failed.') . EOL);
goaway($a->get_baseurl());
// NOTREACHED
}
// new account
$_SESSION['register'] = 1;
$openid->required = array('namePerson/friendly', 'contact/email', 'namePerson');
$openid->optional = array('namePerson/first','media/image/aspect11','media/image/default');
goaway($openid->authUrl());
// NOTREACHED
}
}
}
if((x($_POST,'auth-params')) && $_POST['auth-params'] === 'login') {
$record = null;
$addon_auth = array(
'username' => trim($_POST['openid_url']),
'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
$r = q("SELECT * FROM `user` WHERE ( `email` = '%s' OR `nickname` = '%s' )
AND `password` = '%s' AND `blocked` = 0 AND `verified` = 1 LIMIT 1",
dbesc(trim($_POST['openid_url'])),
dbesc(trim($_POST['openid_url'])),
dbesc($encrypted)
);
if(count($r))
$record = $r[0];
}
if((! $record) || (! count($record))) {
logger('authenticate: failed login attempt: ' . trim($_POST['openid_url']));
notice( t('Login failed.') . EOL );
goaway($a->get_baseurl());
}
$_SESSION['uid'] = $record['uid'];
$_SESSION['theme'] = $record['theme'];
$_SESSION['authenticated'] = 1;
$_SESSION['page_flags'] = $record['page-flags'];
$_SESSION['my_url'] = $a->get_baseurl() . '/profile/' . $record['nickname'];
$_SESSION['addr'] = $_SERVER['REMOTE_ADDR'];
notice( t("Welcome back ") . $record['username'] . EOL);
$a->user = $record;
if(strlen($a->user['timezone']))
date_default_timezone_set($a->user['timezone']);
$r = q("SELECT * FROM `contact` WHERE `uid` = %s AND `self` = 1 LIMIT 1",
intval($_SESSION['uid']));
if(count($r)) {
$a->contact = $r[0];
$a->cid = $r[0]['id'];
$_SESSION['cid'] = $a->cid;
}
q("UPDATE `user` SET `login_date` = '%s' WHERE `uid` = %d LIMIT 1",
dbesc(datetime_convert()),
intval($_SESSION['uid'])
);
call_hooks('logged_in', $a->user);
header('X-Account-Management-Status: active; name="' . $a->user['username'] . '"; id="' . $a->user['nickname'] .'"');
if(($a->module !== 'home') && isset($_SESSION['return_url']))
goaway($a->get_baseurl() . '/' . $_SESSION['return_url']);
}
}
// Returns an array of group id's this contact is a member of.
// This array will only contain group id's related to the uid of this
// DFRN contact. They are *not* neccessarily unique across the entire site.
if(! function_exists('init_groups_visitor')) {
function init_groups_visitor($contact_id) {
$groups = array();
$r = q("SELECT `gid` FROM `group_member`
WHERE `contact-id` = %d ",
intval($contact_id)
);
if(count($r)) {
foreach($r as $rr)
$groups[] = $rr['gid'];
}
return $groups;
}}
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