friendica_2021-01/include/auth.php

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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($_SESSION['page_flags']);
}
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// login/logout
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if((isset($_SESSION)) && (x($_SESSION,'authenticated')) && ((! (x($_POST,'auth-params'))) || ($_POST['auth-params'] !== 'login'))) {
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if(((x($_POST,'auth-params')) && ($_POST['auth-params'] === 'logout')) || ($a->module === 'logout')) {
// process logout request
nuke_session();
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notice( t('Logged out.') . EOL);
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goaway($a->get_baseurl());
}
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if(x($_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());
}
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$r = q("SELECT * FROM `user` WHERE `uid` = %d LIMIT 1",
intval($_SESSION['uid'])
);
if(! count($r)) {
nuke_session();
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goaway($a->get_baseurl());
}
// initialise user environment
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$a->user = $r[0];
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$_SESSION['theme'] = $a->user['theme'];
$_SESSION['page_flags'] = $a->user['page-flags'];
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if(strlen($a->user['timezone']))
date_default_timezone_set($a->user['timezone']);
$_SESSION['my_url'] = $a->get_baseurl() . '/profile/' . $a->user['nickname'];
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$r = q("SELECT * FROM `contact` WHERE `uid` = %d AND `self` = 1 LIMIT 1",
intval($_SESSION['uid']));
if(count($r)) {
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$a->contact = $r[0];
$a->cid = $r[0]['id'];
$_SESSION['cid'] = $a->cid;
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}
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header('X-Account-Management-Status: active; name="' . $a->user['username'] . '"; id="' . $a->user['nickname'] .'"');
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}
}
else {
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if(isset($_SESSION)) {
nuke_session();
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}
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if((x($_POST,'password')) && strlen($_POST['password']))
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$encrypted = hash('whirlpool',trim($_POST['password']));
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else {
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if((x($_POST,'openid_url')) && strlen($_POST['openid_url'])) {
$noid = get_config('system','no_openid');
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$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))) {
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$a = get_app();
notice( t('Login failed.') . EOL);
goaway($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 = $a->get_baseurl() . '/openid';
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$r = q("SELECT `uid` FROM `user` WHERE `openid` = '%s' LIMIT 1",
dbesc($openid_url)
);
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if(count($r)) {
// existing account
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goaway($openid->authUrl());
// NOTREACHED
}
else {
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if($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');
$openid->optional = array('namePerson/first','media/image/aspect11','media/image/default');
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goaway($openid->authUrl());
// NOTREACHED
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}
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}
}
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if((x($_POST,'auth-params')) && $_POST['auth-params'] === 'login') {
// process login request
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$r = q("SELECT * FROM `user`
WHERE ( `email` = '%s' OR `nickname` = '%s' ) AND `password` = '%s' AND `blocked` = 0 AND `verified` = 1 LIMIT 1",
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dbesc(trim($_POST['openid_url'])),
dbesc(trim($_POST['openid_url'])),
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dbesc($encrypted));
if(($r === false) || (! count($r))) {
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notice( t('Login failed.') . EOL );
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goaway($a->get_baseurl());
}
$_SESSION['uid'] = $r[0]['uid'];
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$_SESSION['theme'] = $r[0]['theme'];
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$_SESSION['authenticated'] = 1;
$_SESSION['page_flags'] = $r[0]['page-flags'];
$_SESSION['my_url'] = $a->get_baseurl() . '/profile/' . $r[0]['nickname'];
$_SESSION['addr'] = $_SERVER['REMOTE_ADDR'];
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notice( t("Welcome back ") . $r[0]['username'] . EOL);
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$a->user = $r[0];
if(strlen($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;
}
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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() . '/' . $_SESSION['return_url']);
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}
}
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// Returns an array of group id's this contact is a member of.
// This array will only contain group id's related to the uid of this
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// DFRN contact. They are *not* neccessarily unique across the entire site.
if(! function_exists('init_groups_visitor')) {
function init_groups_visitor($contact_id) {
$groups = array();
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$r = q("SELECT `gid` FROM `group_member`
WHERE `contact-id` = %d ",
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intval($contact_id)
);
if(count($r)) {
foreach($r as $rr)
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$groups[] = $rr['gid'];
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}
return $groups;
}}