selectsource.php

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<?php

// Retrieve the authentication state
if (!array_key_exists('AuthState', $_REQUEST)) {
        throw new SimpleSAML_Error_BadRequest('Missing AuthState parameter.');
}
$authStateId = $_REQUEST['AuthState'];
$state = SimpleSAML_Auth_State::loadState($authStateId, sspmod_multiauth_Auth_Source_MultiAuth::STAGEID);

if (array_key_exists("SimpleSAML_Auth_Source.id", $state)) {
        $authId = $state["SimpleSAML_Auth_Source.id"];
        $as = SimpleSAML_Auth_Source::getById($authId);
} else {
        $as = NULL;
}

$source = NULL;
if (array_key_exists('source', $_REQUEST)) {
        $source = $_REQUEST['source'];
} else {
        foreach ($_REQUEST as $k => $v) {
                $k = explode('-', $k, 2);
                if (count($k) === 2 && $k[0] === 'src') {
                        $source = base64_decode($k[1]);
                }
        }
}
if ($source !== NULL) {
        if ($as !== NULL) {
                $as->setPreviousSource($source);
        }
        sspmod_multiauth_Auth_Source_MultiAuth::delegateAuthentication($source, $state);
}

if (array_key_exists('multiauth:preselect', $state)) {
        $source = $state['multiauth:preselect'];
        sspmod_multiauth_Auth_Source_MultiAuth::delegateAuthentication($source, $state);
}

$globalConfig = SimpleSAML_Configuration::getInstance();
$t = new SimpleSAML_XHTML_Template($globalConfig, 'multiauth:selectsource.php');
$t->data['authstate'] = $authStateId;
$t->data['sources'] = $state[sspmod_multiauth_Auth_Source_MultiAuth::SOURCESID];
if ($as !== NULL) {
        $t->data['preferred'] = $as->getPreviousSource();
} else {
        $t->data['preferred'] = NULL;
}
$t->show();
exit();