diff --git a/src/Module/Magic.php b/src/Module/Magic.php index 0f710b6a0b..f5f9b24a05 100644 --- a/src/Module/Magic.php +++ b/src/Module/Magic.php @@ -21,6 +21,7 @@ namespace Friendica\Module; +use Exception; use Friendica\App; use Friendica\BaseModule; use Friendica\Core\L10n; @@ -30,7 +31,6 @@ use Friendica\Database\Database; use Friendica\Model\Contact; use Friendica\Model\User; use Friendica\Network\HTTPClient\Capability\ICanSendHttpRequests; -use Friendica\Network\HTTPClient\Client\HttpClientAccept; use Friendica\Network\HTTPClient\Client\HttpClientOptions; use Friendica\Util\HTTPSignature; use Friendica\Util\Profiler; @@ -65,120 +65,102 @@ class Magic extends BaseModule protected function rawContent(array $request = []) { - $this->logger->info('magic module: invoked'); + if ($_SERVER['REQUEST_METHOD'] == 'HEAD') { + $this->logger->debug('Got a HEAD request'); + System::exit(); + } - $this->logger->debug('args', ['request' => $_REQUEST]); + $this->logger->debug('Invoked', ['request' => $request]); $addr = $request['addr'] ?? ''; $dest = $request['dest'] ?? ''; $bdest = $request['bdest'] ?? ''; $owa = intval($request['owa'] ?? 0); - $cid = 0; - // bdest is preferred as it is hex-encoded and can survive url rewrite and argument parsing + // bdest is preferred as it is hex-encoded and can survive url rewrite and argument parsing if (!empty($bdest)) { $dest = hex2bin($bdest); - $this->logger->info('bdest detected. ', ['dest' => $dest]); + $this->logger->debug('bdest detected', ['dest' => $dest]); } - if (!empty($addr)) { - $cid = Contact::getIdForURL($addr); - } elseif (!empty($dest)) { - $cid = Contact::getIdForURL($dest); - } - $this->logger->info('Contact ID: ', ['cid' => $cid]); - - $contact = false; - if (!$cid) { - $this->logger->info('No contact record found', $_REQUEST); + if (!empty($addr ?: $dest)) { + $contact = Contact::getByURL($addr ?: $dest); + } + + if (empty($contact)) { if (!$owa) { - // @TODO Finding a more elegant possibility to redirect to either internal or external URL + $this->logger->info('No contact record found, no oWA, redirecting to destination.', ['request' => $request, 'server' => $_SERVER, 'dest' => $dest]); $this->app->redirect($dest); } } else { - $contact = $this->dba->selectFirst('contact', ['id', 'nurl', 'url'], ['id' => $cid]); - // Redirect if the contact is already authenticated on this site. if ($this->app->getContactId() && strpos($contact['nurl'], Strings::normaliseLink($this->baseUrl)) !== false) { - $this->logger->info('Contact is already authenticated'); + $this->logger->info('Contact is already authenticated, redirecting to destination.', ['dest' => $dest]); System::externalRedirect($dest); } - $this->logger->info('Contact URL: ', ['url' => $contact['url']]); + $this->logger->debug('Contact found', ['url' => $contact['url']]); + } + + if (!$this->userSession->getLocalUserId() || !$owa) { + $this->logger->notice('Not logged in or not OWA, redirecting to destination.', ['uid' => $this->userSession->getLocalUserId(), 'owa' => $owa, 'dest' => $dest]); + $this->app->redirect($dest); } // OpenWebAuth - if ($this->userSession->getLocalUserId() && $owa) { - $this->logger->info('Checking OWA now'); - $user = User::getById($this->userSession->getLocalUserId()); + $owner = User::getOwnerDataById($this->userSession->getLocalUserId()); - $basepath = false; - if (!empty($contact)) { - $this->logger->info('Contact found - trying friendica style basepath extraction'); - // 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. - $contact_url = $contact['url']; - if (!(strpos($contact_url, '/profile/') === false)) { - $exp = explode('/profile/', $contact['url']); - $basepath = $exp[0]; - $this->logger->info('Basepath: ', ['basepath' => $basepath]); - } else { - $this->logger->info('Not possible to extract basepath in friendica style'); - } - } - if (!$basepath) { - // For the rest of the OpenWebAuth-enabled Fediverse - $parsed = parse_url($dest); - $this->logger->info('Parsed URL: ', ['parsed URL' => $parsed]); - if (!$parsed) { - System::externalRedirect($dest); - } - $basepath = $parsed['scheme'] . '://' . $parsed['host'] . (isset($parsed['port']) ? ':' . $parsed['port'] : ''); - } - - $accept_headers = ['application/x-dfrn+json', 'application/x-zot+json']; - $header = [ - 'Accept' => $accept_headers, - 'X-Open-Web-Auth' => [Strings::getRandomHex()], - ]; - - // Create a header that is signed with the local users private key. - $header = HTTPSignature::createSig( - $header, - $user['prvkey'], - 'acct:' . $user['nickname'] . '@' . $this->baseUrl->getHost() . ($this->baseUrl->getPath() ? '/' . $this->baseUrl->getPath() : '') - ); - - $this->logger->info('Headers: ', ['headers' => $header]); - - // Try to get an authentication token from the other instance. - $curlResult = $this->httpClient->get($basepath . '/owa', HttpClientAccept::DEFAULT, [HttpClientOptions::HEADERS => $header, HttpClientOptions::ACCEPT_CONTENT => $accept_headers]); - - if ($curlResult->isSuccess()) { - $j = json_decode($curlResult->getBody(), true); - $this->logger->info('Curl result body: ', ['body' => $j]); - - if ($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(Strings::base64UrlDecode($j['encrypted_token']), $token, $user['prvkey']); - } else { - $token = $j['token']; - } - $args = (strpbrk($dest, '?&') ? '&' : '?') . 'owt=' . $token; - - $this->logger->info('Redirecting', ['path' => $dest . $args]); - System::externalRedirect($dest . $args); - } - } + $gserver = $this->dba->selectFirst('gserver', ['url'], ['id' => $contact['gsid']]); + if (empty($gserver)) { + $this->logger->notice('Server not found, redirecting to destination.', ['gsid' => $contact['gsid'], 'dest' => $dest]); System::externalRedirect($dest); } - // @TODO Finding a more elegant possibility to redirect to either internal or external URL - $this->app->redirect($dest); + $basepath = $gserver['url']; + + $header = [ + 'Accept' => ['application/x-dfrn+json', 'application/x-zot+json'], + 'X-Open-Web-Auth' => [Strings::getRandomHex()], + ]; + + // Create a header that is signed with the local users private key. + $header = HTTPSignature::createSig( + $header, + $owner['prvkey'], + 'acct:' . $owner['addr'] + ); + + $this->logger->info('Fetch from remote system', ['basepath' => $basepath, 'headers' => $header]); + + // Try to get an authentication token from the other instance. + try { + $curlResult = $this->httpClient->request('get', $basepath . '/owa', [HttpClientOptions::HEADERS => $header]); + } catch (Exception $exception) { + $this->logger->notice('URL is invalid, redirecting to destination.', ['url' => $basepath, 'error' => $exception, 'dest' => $dest]); + System::externalRedirect($dest); + } + if (!$curlResult->isSuccess()) { + $this->logger->notice('OWA request failed, redirecting to destination.', ['returncode' => $curlResult->getReturnCode(), 'dest' => $dest]); + System::externalRedirect($dest); + } + + $j = json_decode($curlResult->getBody(), true); + if (empty($j) || !$j['success']) { + $this->logger->notice('Invalid JSON, redirecting to destination.', ['json' => $j, 'dest' => $dest]); + $this->app->redirect($dest); + } + + if ($j['encrypted_token']) { + // The token is encrypted. If the local user is really the one the other instance + // thinks they is, the token can be decrypted with the local users public key. + $token = ''; + openssl_private_decrypt(Strings::base64UrlDecode($j['encrypted_token']), $token, $owner['prvkey']); + } else { + $token = $j['token']; + } + $args = (strpbrk($dest, '?&') ? '&' : '?') . 'owt=' . $token; + + $this->logger->debug('Redirecting', ['path' => $dest . $args]); + System::externalRedirect($dest . $args); } }