commit 0e6541b7da74113c463030190a7d2a5c31e3aaa2
Author: octospacc <octo@tutamail.com>
Date:   Sat Sep 9 16:33:20 2023 +0200

    [ActivityPub] v0.0.1-dev, add webfinger, nodeinfo, user profiles metadata

diff --git a/phpBB/ext/spaccinc/activitypub/composer.json b/phpBB/ext/spaccinc/activitypub/composer.json
new file mode 100755
index 0000000..3d89add
--- /dev/null
+++ b/phpBB/ext/spaccinc/activitypub/composer.json
@@ -0,0 +1,27 @@
+{
+	"name": "spaccinc/activitypub",
+	"type": "phpbb-extension",
+	"description": "ActivityPub for phpBB",
+	"homepage": "https://gitlab.com/SpaccInc/SpaccCommunityPlatform",
+	"version": "0.0.1-dev",
+	"time": "2023-09-07",
+	"license": "[to be defined]",
+	"authors": [
+		{
+			"name": "Octt",
+			"email": "",
+			"homepage": "https://hub.octt.eu.org",
+			"role": ""
+		}
+	],
+	"require": {
+		"php": ">=8.2.7",
+		"composer/installers": "~1.0"
+	},
+	"extra": {
+		"display-name": "ActivityPub for phpBB",
+		"soft-require": {
+			"phpbb/phpbb": ">=3.3.0,<4.0.0@dev"
+		}
+	}
+}
diff --git a/phpBB/ext/spaccinc/activitypub/config/routing.yml b/phpBB/ext/spaccinc/activitypub/config/routing.yml
new file mode 100755
index 0000000..fe97ec7
--- /dev/null
+++ b/phpBB/ext/spaccinc/activitypub/config/routing.yml
@@ -0,0 +1,12 @@
+spaccinc_activitypub_activitypub_webfinger:
+    path: /.well-known/webfinger
+    defaults: { _controller: spaccinc.activitypub.controller.activitypub:webfinger }
+
+spaccinc_activitypub_activitypub_nodeinfo_known:
+    path: /.well-known/nodeinfo
+    defaults: { _controller: spaccinc.activitypub.controller.activitypub:nodeinfo_known }
+
+spaccinc_activitypub_activitypub_activitypub:
+    path: /activitypub
+    defaults: { _controller: spaccinc.activitypub.controller.activitypub:activitypub }
+
diff --git a/phpBB/ext/spaccinc/activitypub/config/services.yml b/phpBB/ext/spaccinc/activitypub/config/services.yml
new file mode 100755
index 0000000..34ba338
--- /dev/null
+++ b/phpBB/ext/spaccinc/activitypub/config/services.yml
@@ -0,0 +1,7 @@
+services:
+    spaccinc.activitypub.controller.activitypub:
+        class: spaccinc\activitypub\controller\activitypub_controller
+        arguments:
+            - '@request'
+            - '@dbal.conn'
+
diff --git a/phpBB/ext/spaccinc/activitypub/controller/activitypub_controller.php b/phpBB/ext/spaccinc/activitypub/controller/activitypub_controller.php
new file mode 100755
index 0000000..4785aa1
--- /dev/null
+++ b/phpBB/ext/spaccinc/activitypub/controller/activitypub_controller.php
@@ -0,0 +1,270 @@
+<?php
+
+namespace spaccinc\activitypub\controller;
+
+use ErrorException;
+use Symfony\Component\HttpFoundation\Response;
+
+class activitypub_controller
+{
+	/** @var \phpbb\request\request */
+	protected $request;
+
+	/** @var \phpbb\db\driver\driver_interface */
+	protected $db;
+
+	// Quick way to force any PHP warning to be an error that halts execution and makes nothing return,
+	// so that we don't need complex error handling in case of bad queries
+	public function exception_error_handler($severity, $message, $file, $line)
+	{
+		if ($message !== 'Only variables should be passed by reference')
+		{
+			throw new ErrorException($message, 0, $severity, $file, $line);
+		}
+	}
+
+	public function __construct(
+		\phpbb\request\request            $request,
+		\phpbb\db\driver\driver_interface $db,
+	){
+		$this->request = $request;
+		$this->db      = $db;
+
+		$this->site_name = $this->get_sql_row('
+			SELECT config_value
+			FROM ' . CONFIG_TABLE . "
+			WHERE config_name = 'sitename'
+		")['config_value'];
+
+		$this->server_name = $this->get_sql_row('
+			SELECT config_value
+			FROM ' . CONFIG_TABLE . "
+			WHERE config_name = 'server_name'
+		")['config_value'];
+
+		$this->server_addr = ((!empty($this->request->server('HTTPS')) && (strtolower($this->request->server('HTTPS')) == 'on' || $this->request->server('HTTPS') == '1')) ? 'https://' : 'http://') . $this->server_name;
+	}
+
+	//private function server_name()
+	//{
+	//	// <https://area51.phpbb.com/docs/dev/3.3.x/request/request.html#server>
+	//	//return strtolower(htmlspecialchars_decode($this->request->header('Host', $this->request->server('SERVER_NAME'))));
+	//}
+
+	//private function server_addr()
+	//{
+	//	// <https://stackoverflow.com/a/56373183>
+	//	$proto = (!empty($this->request->server('HTTPS')) && (strtolower($this->request->server('HTTPS')) == 'on' || $this->request->server('HTTPS') == '1')) ? 'https://' : 'http://';
+	//	return $proto . $this->server_name;
+	//}
+
+	private function get_sql_row($sql)
+	{
+		$result = $this->db->sql_query($sql);
+		$data = $this->db->sql_fetchrow($result);
+		$this->db->sql_freeresult($result);
+		return $data;
+	}
+
+	public function nodeinfo_known()
+	{
+		set_error_handler([$this, 'exception_error_handler']);
+		$server_addr = $this->server_addr;
+		$response = new Response(json_encode([
+			'links' => [[
+				'rel' => 'http://nodeinfo.diaspora.software/ns/schema/2.0',
+				'href' => $server_addr . '/activitypub?&mode=nodeinfo&version=2.0',
+			]],
+		]), 200);
+		$response->headers->set('Content-Type', 'application/jrd+json; charset=utf-8');
+		restore_error_handler();
+		return $response;
+	}
+
+	public function webfinger()
+	{
+		set_error_handler([$this, 'exception_error_handler']);
+		$server_name = $this->server_name;
+		$server_addr = $this->server_addr;
+		$resource = $this->request->variable('resource', '');
+
+		$subject = '';
+		$href = [];
+
+		//if ($resource == '')
+		//{
+		//	return new JsonResponse([], 500);
+		//}
+
+		if (str_starts_with($resource, 'acct:'))
+		{
+			$tokens = explode('@', substr($resource, strlen('acct:')));
+			if ($tokens[0] === '')
+			{
+				array_shift($tokens);
+			}
+			$name = strtolower($tokens[0]);
+			$subject = 'acct:' . $name . '@' . $server_name;
+
+			$data = $this->get_sql_row('
+				SELECT user_id
+				FROM ' . USERS_TABLE . "
+				WHERE username_clean = '" . $this->db->sql_escape($name) . "'
+			");
+
+			$href['self'] = '&mode=user&u=' . $data['user_id'];
+			$href['profile-page'] = '/memberlist.php?mode=viewprofile&u=' . $data['user_id'];
+		}
+
+		$response = new Response(json_encode([
+			'subject' => $subject,
+			'links' => [[
+				'rel' => 'self',
+				'type' => 'application/activity+json',
+				'href' => $server_addr . '/activitypub?' . $href['self'],
+			], [
+				'rel' => 'http://webfinger.net/rel/profile-page',
+				'type' => 'text/html',
+				'href' => $server_addr . $href['profile-page'],
+			]],
+		]), 200);
+		$response->headers->set('Content-Type', 'application/jrd+json; charset=utf-8');
+		restore_error_handler();
+		return $response;
+	}
+
+	public function activitypub()
+	{
+		set_error_handler([$this, 'exception_error_handler']);
+		$server_addr = $this->server_addr;
+		$uri_id = htmlspecialchars_decode($server_addr . $this->request->server('REQUEST_URI'));
+		$mode = $this->request->variable('mode', '');
+
+		$response = [];
+
+		switch ($mode)
+		{
+			case 'nodeinfo':
+				$version = $this->request->variable('version', '');
+				switch ($version)
+				{
+					//case '1.0':
+					//	// ...
+					//break;
+
+					case '2.0':
+						$response = [
+							'version' => '2.0',
+							'software' => [
+								'name' => 'phpBB ActivityPub',
+								'version' => '0.0.1',
+							],
+							'protocols' => [
+								'activitypub',
+							],
+							'services' => [
+								'inbound' => [],
+								'outbound' => [],
+							],
+							//'usage' => [
+							//	'users' => [
+							//		'total' => ,
+							//	],
+							//	'localPosts' => ,
+							//],
+							//'openRegistrations' => true,
+							'metadata' => [
+								'nodeName' => $this->site_name,
+							],
+						];
+					break;
+				}
+			break;
+
+			case 'user':
+				$u = $this->request->variable('u', '');
+
+				$data = $this->get_sql_row('
+					SELECT *
+					FROM ' . USERS_TABLE . "
+					WHERE user_id = '" . $this->db->sql_escape($u) . "'
+				");
+
+				$icon_ext = end(explode('.', $data['user_avatar']));
+
+//$config = [
+//	"private_key_bits" => 2048,
+//	"private_key_type" => OPENSSL_KEYTYPE_RSA,
+//];
+//
+//$keypair = openssl_pkey_new($config);
+//openssl_pkey_export($keypair, $private_key);
+//
+//$public_key = openssl_pkey_get_details($keypair);
+//$public_key = $public_key["key"];
+
+				$response = [
+					'@context' => [
+						'https://www.w3.org/ns/activitystreams',
+						'https://w3id.org/security/v1',
+					],
+					'id' => $uri_id,
+					'inbox' => $server_addr . '/activitypub?&mode=inbox&u=' . $u,
+					'outbox' => $server_addr . '/activitypub?&mode=outbox&u=' . $u,
+					'endpoints' => [
+						'sharedInbox' => $server_addr . '/activitypub&mode=inbox',
+					],
+					'type' => 'Person',
+					//'discoverable' => true,
+					//'manuallyApprovesFollowers' => false,
+					//'published' => $data['user_regdate'],
+					'preferredUsername' => $data['username_clean'],
+					'name' => $data['username'],
+					'url' => $server_addr . '/memberlist.php?mode=viewprofile&u=' . $u,
+					'icon' => [
+						'type' => 'Image',
+						'mediaType' => 'image/' . ($icon_ext === 'jpg' ? 'jpeg' : $icon_ext),
+						'url' => $server_addr . '/download/file.php?avatar=' . $data['user_avatar'],
+					],
+					//'publicKey' => [
+					//	'id' => $uri_id . '#main-key',
+					//	'owner' => $uri_id,
+					//	'publicKeyPem' => $public_key,
+					//],
+				];
+			break;
+
+			case 'inbox':
+				
+			break;
+
+			case 'outbox':
+				$u = $this->request->variable('u', '');
+
+				$user_posts = $this->get_sql_row('
+					SELECT user_posts
+					FROM ' . USERS_TABLE . "
+					WHERE user_id = '" . $this->db->sql_escape($u) . "'
+				")['user_posts'];
+
+				$response = [
+					'@context' => 'https://www.w3.org/ns/activitystreams',
+					'id' => $uri_id,
+					'type' => 'OrderedCollection',
+					'totalItems' => (int)$user_posts,
+					'first' => $uri_id . '&view=page',
+					'last' => $uri_id . '&view=page&min_id=0',
+				];
+			break;
+
+			//case 'post':
+			//	
+			//break;
+		}
+
+		$response = new Response(json_encode($response), 200);
+		$response->headers->set('Content-Type', 'application/activity+json; charset=utf-8');
+		restore_error_handler();
+		return $response;
+	}
+}