From f5af62ece2cf60f36a5e87d097ffdcc8133670da Mon Sep 17 00:00:00 2001
From: Michael <heluecht@pirati.ca>
Date: Wed, 28 Feb 2024 02:09:49 +0000
Subject: [PATCH] Initial commit

---
 .gitignore |  63 +++++++++++++++++++++++++++++++
 README.md  |  25 ++++++++++++-
 index.php  | 107 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 193 insertions(+), 2 deletions(-)
 create mode 100644 .gitignore
 create mode 100644 index.php

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..f6d0c48
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,63 @@
+favicon.*
+\#*
+*.log
+*.out
+*.version*
+*~
+robots.txt
+
+#ignore local config
+!/config/local-sample.config.php
+/config/*.config.php
+
+#ignore config files from eclipse, we don't want IDE files in our repository
+.project
+.buildpath
+.externalToolBuilders
+.settings
+
+#ignore OSX .DS_Store files
+.DS_Store
+
+#ignore NetBeans IDE's private files (at least)
+/nbproject/private/
+
+#Ignore config files from VSCode
+/.vscode/
+
+#ignore cache folders
+nbproject
+
+#ignore local folder
+/local/
+
+#ignore config files from Visual Studio
+/.vs/
+/php_friendica.phpproj
+/php_friendica.sln
+/php_friendica.phpproj.user
+
+#ignore config files from JetBrains
+/.idea
+
+#ignore base .htaccess
+/.htaccess
+
+#Ignore log folder
+/log
+
+#Ignore temporary installed phpunit
+/bin/phpunit
+
+#Ignore cache files
+.php_cs.cache
+.php-cs-fixer.cache
+
+#Ignore autotest results
+autotest-results.xml
+
+#ignore phpunit result cache
+tests/.phpunit.result.cache
+
+#ignore .php_cs (local copy)
+.php_cs
diff --git a/README.md b/README.md
index ef07f26..1b6a1ee 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,24 @@
-# bluesky-handles
+Bluesky handle registration for Friendica
+=========================================
 
-With this tool you enable your Friendica users to use a subdomains of your Friendica hostname as their Bluesky handle.
\ No newline at end of file
+This tool enables your Friendica users to rename their existing Bluesky handles to a subdomain of your Friendica system.
+So for example user "nickname" on your server "myfriendica.tld" can then use "nickname.myfriendica.tld" as their Bluesky handle.
+
+## Installation
+
+### Webserver
+
+You need an additional configuration for your webserver to serve wildcard requests.
+Best way is to copy your Friendica configuration and to simply change the following parameters and the directory:
+
+        ServerName        atproto.myfriendica.tld
+        ServerAlias       *.myfriendica.tld
+
+Please be aware, that no SSL certificate is needed, serving HTTP only is completely okay.
+
+### Configuration
+
+Please copy the sample file local-sample.config.php to local.config.php and set the database configuration parameters like in ypur Friendica configuration.
+Also don't forget to enter your Friendica hostname, that's all.
+You can check your installation by visiting the page "nickname.myfriendica.tld" (with an existing handle and your real Friendica hostname).
+If everything is configured correctly, this subdomain will then redirect you to the profile page of this user.
\ No newline at end of file
diff --git a/index.php b/index.php
new file mode 100644
index 0000000..6f3bab9
--- /dev/null
+++ b/index.php
@@ -0,0 +1,107 @@
+<?php
+$config = include 'config/local.config.php';
+if (empty($config['config']['hostname'])) {
+	notFound();
+}
+
+$connection = connectDatabase($config);
+if (empty($connection)) {
+	notFound();
+}
+
+if (!in_array($_REQUEST['pagename'], ['.well-known/atproto-did', ''])) {
+	notFound();
+}
+
+$server = '.' . trim($config['config']['hostname'], '.');
+
+if (!strpos($_SERVER['SERVER_NAME'], $server)) {
+	notFound();
+}
+
+$nick = str_replace($server, '', $_SERVER['SERVER_NAME']);
+
+$user = selectFirst($connection, "SELECT `uid` FROM `user` WHERE `nickname` = ?", [$nick]);
+if (empty($user['uid'])) {
+	notFound();
+}
+
+if ($_REQUEST['pagename'] == '') {
+	header('Location: http://' . $config['config']['hostname'] . '/profile/' . $nick);
+	die();
+}	
+
+$did = selectFirst($connection, "SELECT `v` FROM `pconfig` WHERE `uid` = ? AND `cat` = ? AND `k` = ?", [$user['uid'], 'bluesky', 'did']);
+if (empty($did['v'])) {
+	notFound();
+}
+
+header('Content-Type: text/plain');
+echo $did['v'];
+
+function notFound()
+{
+	header('HTTP/1.0 404 Not Found');
+
+	echo '<h1>404 - Page Not Found</h1>';
+	echo 'The requested resource could not be found but may be available in the future.';
+	die();
+}
+
+function connectDatabase(array $config): PDO
+{
+	if (!empty($config['database']['socket'])) {
+		$connect = 'mysql:unix_socket=' . $config['database']['socket'];
+	} else {
+		$connect = 'mysql:host=' . $config['database']['hostname'];
+		if (!empty($config['database']['port'])) {
+			$connect .= ';port=' . $config['database']['port'];
+		}
+	}
+
+	if (!empty($config['database']['charset'])) {
+		$connect .= ';charset=' . $config['database']['charset'];
+	}
+
+	$connect .= ';dbname=' . $config['database']['database'];
+
+	try {
+		$connection = @new PDO($connect, $config['database']['username'], $config['database']['password'], [PDO::ATTR_PERSISTENT => false]);
+		$connection->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_SILENT);
+	} catch (PDOException $e) {
+		$connection = null;
+	}
+	return $connection;
+}
+
+function selectFirst(PDO $connection, $query, $parameters = []): ?array
+{
+	if (!$stmt = $connection->prepare($query)) {
+		return null;
+	}
+
+	foreach (array_keys($parameters) as $param) {
+		$data_type = PDO::PARAM_STR;
+		if (is_int($parameters[$param])) {
+			$data_type = PDO::PARAM_INT;
+		} elseif ($parameters[$param] !== null) {
+			$parameters[$param] = (string)$parameters[$param];
+		}
+
+		$stmt->bindParam($param + 1, $parameters[$param], $data_type);
+	}
+
+	if (!$stmt->execute()) {
+		return null;
+	}
+
+	$columns = $stmt->fetch(PDO::FETCH_ASSOC);
+	$stmt->closeCursor();
+
+	if (!is_array($columns)) {
+		return null;
+	}
+
+	return $columns;
+}
+?>