Friendica Communications Platform (please note that this is a clone of the repository at github, issues are handled there) https://friendi.ca
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 
 
 

120 lines
3.5 KiB

<?php
/**
* @file src/Module/Magic.php
*/
namespace Friendica\Module;
use Friendica\BaseModule;
use Friendica\Database\DBA;
use Friendica\Model\Contact;
use Friendica\Util\HTTPSignature;
use Friendica\Util\Network;
/**
* Magic Auth (remote authentication) module.
*
* Ported from Hubzilla: https://framagit.org/hubzilla/core/blob/master/Zotlabs/Module/Magic.php
*/
class Magic extends BaseModule
{
public static function init()
{
$a = self::getApp();
$ret = ['success' => false, 'url' => '', 'message' => ''];
logger('magic mdule: invoked', LOGGER_DEBUG);
logger('args: ' . print_r($_REQUEST, true), LOGGER_DATA);
$addr = ((x($_REQUEST, 'addr')) ? $_REQUEST['addr'] : '');
$dest = ((x($_REQUEST, 'dest')) ? $_REQUEST['dest'] : '');
$test = ((x($_REQUEST, 'test')) ? intval($_REQUEST['test']) : 0);
$owa = ((x($_REQUEST, 'owa')) ? intval($_REQUEST['owa']) : 0);
// NOTE: I guess $dest isn't just the profile url (could be also
// other profile pages e.g. photo). We need to find a solution
// to be able to redirct to other pages than the contact profile.
$cid = Contact::getIdForURL($dest);
if (!$cid && !empty($addr)) {
$cid = Contact::getIdForURL($addr);
}
if (!$cid) {
logger('No contact record found: ' . print_r($_REQUEST, true), LOGGER_DEBUG);
goaway($dest);
}
$contact = DBA::selectFirst('contact', ['id', 'nurl', 'url'], ['id' => $cid]);
// Redirect if the contact is already authenticated on this site.
if (!empty($a->contact) && array_key_exists('id', $a->contact) && strpos($contact['nurl'], normalise_link(self::getApp()->get_baseurl())) !== false) {
if ($test) {
$ret['success'] = true;
$ret['message'] .= 'Local site - you are already authenticated.' . EOL;
return $ret;
}
logger('Contact is already authenticated', LOGGER_DEBUG);
goaway($dest);
}
if (local_user()) {
$user = $a->user;
// OpenWebAuth
if ($owa) {
// Extract the basepath
// NOTE: we need another solution because this does only work
// for friendica contacts :-/ . We should have the basepath
// of a contact also in the contact table.
$exp = explode('/profile/', $contact['url']);
$basepath = $exp[0];
$headers = [];
$headers['Accept'] = 'application/x-dfrn+json';
$headers['X-Open-Web-Auth'] = random_string();
// Create a header that is signed with the local users private key.
$headers = HTTPSignature::createSig(
'',
$headers,
$user['prvkey'],
'acct:' . $user['nickname'] . '@' . $a->get_hostname() . ($a->urlpath ? '/' . $a->urlpath : ''),
false,
true,
'sha512'
);
// Try to get an authentication token from the other instance.
$x = Network::curl($basepath . '/owa', false, $redirects, ['headers' => $headers]);
if ($x['success']) {
$j = json_decode($x['body'], true);
if ($j['success']) {
$token = '';
if ($j['encrypted_token']) {
// The token is encrypted. If the local user is really the one the other instance
// thinks he/she is, the token can be decrypted with the local users public key.
openssl_private_decrypt(base64url_decode($j['encrypted_token']), $token, $user['prvkey']);
} else {
$token = $j['token'];
}
$x = strpbrk($dest, '?&');
$args = (($x) ? '&owt=' . $token : '?f=&owt=' . $token);
goaway($dest . $args);
}
}
goaway($dest);
}
}
if ($test) {
$ret['message'] = 'Not authenticated or invalid arguments' . EOL;
return $ret;
}
goaway($dest);
}
}