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friendica_2020-09-1_sharedH.../mod/openid.php

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<?php
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/**
* @file mod/openid.php
*/
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use Friendica\App;
use Friendica\BaseObject;
use Friendica\App\Authentication;
use Friendica\Core\Config;
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use Friendica\Core\L10n;
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use Friendica\Core\Logger;
use Friendica\Core\Session;
use Friendica\Database\DBA;
use Friendica\Util\Strings;
function openid_content(App $a) {
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if (Config::get('system','no_openid')) {
$a->internalRedirect();
}
Logger::log('mod_openid ' . print_r($_REQUEST,true), Logger::DATA);
if (!empty($_GET['openid_mode']) && !empty($_SESSION['openid'])) {
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$openid = new LightOpenID($a->getHostName());
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if ($openid->validate()) {
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$authid = $openid->data['openid_identity'];
if (empty($authid)) {
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Logger::log(L10n::t('OpenID protocol error. No ID returned.') . EOL);
$a->internalRedirect();
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}
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// NOTE: we search both for normalised and non-normalised form of $authid
// because the normalization step was removed from setting
// mod/settings.php in 8367cad so it might have left mixed
// records in the user table
//
$condition = ['blocked' => false, 'account_expired' => false, 'account_removed' => false, 'verified' => true,
'openid' => [$authid, Strings::normaliseOpenID($authid)]];
$user = DBA::selectFirst('user', [], $condition);
if (DBA::isResult($user)) {
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// successful OpenID login
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unset($_SESSION['openid']);
/** @var Authentication $authentication */
$authentication = BaseObject::getClass(Authentication::class);
$authentication->setForUser($a, $user, true, true);
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// just in case there was no return url set
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// and we fell through
$a->internalRedirect();
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}
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// Successful OpenID login - but we can't match it to an existing account.
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unset($_SESSION['register']);
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Session::set('openid_attributes', $openid->getAttributes());
Session::set('openid_identity', $authid);
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// Detect the server URL
$open_id_obj = new LightOpenID($a->getHostName());
$open_id_obj->identity = $authid;
Session::set('openid_server', $open_id_obj->discover($open_id_obj->identity));
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if (intval(Config::get('config', 'register_policy')) === \Friendica\Module\Register::CLOSED) {
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notice(L10n::t('Account not found. Please login to your existing account to add the OpenID to it.'));
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} else {
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notice(L10n::t('Account not found. Please register a new account or login to your existing account to add the OpenID to it.'));
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}
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$a->internalRedirect('login');
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}
}
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notice(L10n::t('Login failed.') . EOL);
$a->internalRedirect();
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// NOTREACHED
}