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friendica_2020-09-1_sharedH.../include/auth.php

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<?php
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require_once('include/security.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();
info( t('Logged out.') . EOL);
goaway(z_root());
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}
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 = $r[0];
}
}
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if(x($_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'] != $_SERVER['REMOTE_ADDR'])) {
nuke_session();
goaway(z_root());
}
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$r = q("SELECT `user`.*, `user`.`pubkey` as `upubkey`, `user`.`prvkey` as `uprvkey`
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FROM `user` WHERE `uid` = %d AND `blocked` = 0 AND `account_expired` = 0 AND `verified` = 1 LIMIT 1",
intval($_SESSION['uid'])
);
if(! count($r)) {
nuke_session();
goaway(z_root());
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}
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authenticate_success($r[0]);
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}
}
else {
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if(isset($_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']) ||
(x($_POST,'username')) && strlen($_POST['username'])) {
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$noid = get_config('system','no_openid');
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$openid_url = trim( (strlen($_POST['openid_url'])?$_POST['openid_url']:$_POST['username']) );
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// 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(z_root());
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// 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(z_root());
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// 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') {
$record = null;
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$addon_auth = array(
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'username' => trim($_POST['username']),
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'password' => trim($_POST['password']),
'authenticated' => 0,
'user_record' => null
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);
/**
*
* A plugin indicates successful login by setting 'authenticated' to non-zero value and returning a user record
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* 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 = $addon_auth['user_record'];
}
else {
// process normal login request
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$r = q("SELECT `user`.*, `user`.`pubkey` as `upubkey`, `user`.`prvkey` as `uprvkey`
FROM `user` WHERE ( `email` = '%s' OR `nickname` = '%s' )
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AND `password` = '%s' AND `blocked` = 0 AND `account_expired` = 0 AND `verified` = 1 LIMIT 1",
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dbesc(trim($_POST['username'])),
dbesc(trim($_POST['username'])),
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dbesc($encrypted)
);
if(count($r))
$record = $r[0];
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}
if((! $record) || (! count($record))) {
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logger('authenticate: failed login attempt: ' . trim($_POST['username']));
notice( t('Login failed.') . EOL );
goaway(z_root());
}
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// if we haven't failed up this point, log them in.
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authenticate_success($record, true, true);
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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;
}}