From 325932dc5a8da2d493808ddb385c6b05ae5be8ee Mon Sep 17 00:00:00 2001
From: Michael <heluecht@pirati.ca>
Date: Sat, 16 Mar 2024 12:54:17 +0000
Subject: [PATCH] Internal support for Bluesky tokens

---
 src/App.php                     | 13 ++++--
 src/Protocol/ATProtocol/DID.php | 81 +++++++++++++++++++++++++++++++++
 2 files changed, 89 insertions(+), 5 deletions(-)
 create mode 100644 src/Protocol/ATProtocol/DID.php

diff --git a/src/App.php b/src/App.php
index bcd49ff8c3..2e19841a1b 100644
--- a/src/App.php
+++ b/src/App.php
@@ -43,6 +43,7 @@ use Friendica\Model\Contact;
 use Friendica\Model\Profile;
 use Friendica\Module\Special\HTTPException as ModuleHTTPException;
 use Friendica\Network\HTTPException;
+use Friendica\Protocol\ATProtocol\DID;
 use Friendica\Util\DateTimeFormat;
 use Friendica\Util\HTTPInputData;
 use Friendica\Util\HTTPSignature;
@@ -565,8 +566,8 @@ class App
 	 */
 	public function runFrontend(App\Router $router, IManagePersonalConfigValues $pconfig, Authentication $auth, App\Page $page, Nav $nav, ModuleHTTPException $httpException, HTTPInputData $httpInput, float $start_time, array $server)
 	{
-		$requeststring = ($_SERVER['REQUEST_METHOD'] ?? '') . ' ' . ($_SERVER['REQUEST_URI'] ?? '') . ' ' . ($_SERVER['SERVER_PROTOCOL'] ?? '');
-		$this->logger->debug('Request received', ['address' => $_SERVER['REMOTE_ADDR'] ?? '', 'request' => $requeststring, 'referer' => $_SERVER['HTTP_REFERER'] ?? '', 'user-agent' => $_SERVER['HTTP_USER_AGENT'] ?? '']);
+		$requeststring = ($server['REQUEST_METHOD'] ?? '') . ' ' . ($server['REQUEST_URI'] ?? '') . ' ' . ($server['SERVER_PROTOCOL'] ?? '');
+		$this->logger->debug('Request received', ['address' => $server['REMOTE_ADDR'] ?? '', 'request' => $requeststring, 'referer' => $server['HTTP_REFERER'] ?? '', 'user-agent' => $server['HTTP_USER_AGENT'] ?? '']);
 		$request_start = microtime(true);
 
 		$this->profiler->set($start_time, 'start');
@@ -593,8 +594,10 @@ class App
 				Core\Hook::callAll('init_1');
 			}
 
+			DID::routeRequest($this->args->getCommand(), $server);
+
 			if ($this->mode->isNormal() && !$this->mode->isBackend()) {
-				$requester = HTTPSignature::getSigner('', $_SERVER);
+				$requester = HTTPSignature::getSigner('', $server);
 				if (!empty($requester)) {
 					Profile::addVisitorCookieForHandle($requester);
 				}
@@ -716,10 +719,10 @@ class App
 				$response = $page->run($this, $this->baseURL, $this->args, $this->mode, $response, $this->l10n, $this->profiler, $this->config, $pconfig, $nav, $this->session->getLocalUserId());
 			}
 
-			$this->logger->debug('Request processed sucessfully', ['response' => $response->getStatusCode(), 'address' => $_SERVER['REMOTE_ADDR'] ?? '', 'request' => $requeststring, 'referer' => $_SERVER['HTTP_REFERER'] ?? '', 'user-agent' => $_SERVER['HTTP_USER_AGENT'] ?? '', 'duration' => number_format(microtime(true) - $request_start, 3)]);
+			$this->logger->debug('Request processed sucessfully', ['response' => $response->getStatusCode(), 'address' => $server['REMOTE_ADDR'] ?? '', 'request' => $requeststring, 'referer' => $server['HTTP_REFERER'] ?? '', 'user-agent' => $server['HTTP_USER_AGENT'] ?? '', 'duration' => number_format(microtime(true) - $request_start, 3)]);
 			System::echoResponse($response);
 		} catch (HTTPException $e) {
-			$this->logger->debug('Request processed with exception', ['response' => $e->getCode(), 'address' => $_SERVER['REMOTE_ADDR'] ?? '', 'request' => $requeststring, 'referer' => $_SERVER['HTTP_REFERER'] ?? '', 'user-agent' => $_SERVER['HTTP_USER_AGENT'] ?? '', 'duration' => number_format(microtime(true) - $request_start, 3)]);
+			$this->logger->debug('Request processed with exception', ['response' => $e->getCode(), 'address' => $server['REMOTE_ADDR'] ?? '', 'request' => $requeststring, 'referer' => $server['HTTP_REFERER'] ?? '', 'user-agent' => $server['HTTP_USER_AGENT'] ?? '', 'duration' => number_format(microtime(true) - $request_start, 3)]);
 			$httpException->rawContent($e);
 		}
 		$page->logRuntime($this->config, 'runFrontend');
diff --git a/src/Protocol/ATProtocol/DID.php b/src/Protocol/ATProtocol/DID.php
new file mode 100644
index 0000000000..465eee82dc
--- /dev/null
+++ b/src/Protocol/ATProtocol/DID.php
@@ -0,0 +1,81 @@
+<?php
+/**
+ * @copyright Copyright (C) 2010-2024, the Friendica project
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+
+namespace Friendica\Protocol\ATProtocol;
+
+use Friendica\Core\System;
+use Friendica\Database\DBA;
+use Friendica\DI;
+use Friendica\Network\HTTPException;
+
+/**
+ * This class handles DID related activities from the AT Protocol
+ */
+class DID
+{
+	/**
+	 * Routes AT Protocol DID requests
+	 *
+	 * @param string $path
+	 * @param array $server
+	 * @return void
+	 */
+	public static function routeRequest(string $path, array $server)
+	{
+		$host = DI::baseUrl()->getHost();
+
+		if (($host == $server['SERVER_NAME']) || !strpos($server['SERVER_NAME'], '.' . $host)) {
+			return;
+		}
+
+		if (!DI::config()->get('bluesky', 'friendica_handles')) {
+			throw new HTTPException\NotFoundException();
+		}
+
+		if (!in_array($path, ['.well-known/atproto-did', ''])) {
+			throw new HTTPException\NotFoundException();
+		}
+
+		$nick = str_replace('.' . $host, '', $server['SERVER_NAME']);
+
+		$user = DBA::selectFirst('user', ['uid'], ['nickname' => $nick, 'verified' => true, 'blocked' => false, 'account_removed' => false, 'account_expired' => false]);
+		if (empty($user['uid'])) {
+			throw new HTTPException\NotFoundException();
+		}
+
+		if (!DI::pConfig()->get($user['uid'], 'bluesky', 'friendica_handle')) {
+			throw new HTTPException\NotFoundException();
+		}
+
+		if ($path == '') {
+			System::externalRedirect(DI::baseUrl() . '/profile/' . urlencode($nick), 0);
+		}
+
+		$did = DI::pConfig()->get($user['uid'], 'bluesky', 'did');
+		if (empty($did)) {
+			throw new HTTPException\NotFoundException();
+		}
+
+		header('Content-Type: text/plain');
+		echo $did;
+		System::exit();
+	}
+}