support for active fetching of user info

contentnation.ini

@@ -0,0 +1,2 @@
+[contentnation]
+service-uri = http://local.contentnation.net

php/federator/api/wellknown/webfinger.php

@@ -51,7 +51,12 @@ class WebFinger
         if (preg_match("/^acct:([^@]+)@(.*)$/", $_resource, $matches) != 1 || $matches[2] !== $domain) {
             throw new \Federator\Exceptions\InvalidArgument();
         }
-        $user = \Federator\DIO\User::getUserByName($this->main->getDatabase(), $matches[1]);
+        $user = \Federator\DIO\User::getUserByName(
+            $this->main->getDatabase(),
+            $matches[1],
+            $this->main->getConnector(),
+            $this->main->getCache()
+        );
         if ($user->id == 0) {
             throw new \Federator\Exceptions\FileNotFound();
         }

php/federator/cache/cache.php

@@ -13,6 +13,15 @@ namespace Federator\Cache;
  */
 interface Cache extends \Federator\Connector\Connector
 {
+    /**
+     * save remote user by given name
+     *
+     * @param string $_name user/profile name
+     * @param \Federator\Data\User $user user data
+     * @return void
+     */
+    public function saveRemoteUserByName($_name, $user);
+
     /**
      * save remote user by given session
      *

php/federator/connector/connector.php

@@ -13,6 +13,14 @@ namespace Federator\Connector;
  */
 interface Connector
 {
+    /**
+     * get remote user by given name
+     *
+     * @param string $_name user/profile name
+     * @return \Federator\Data\User | false
+     */
+    public function getRemoteUserByName(string $_name);
+
     /**
      * get remote user by given session
      *

php/federator/dio/user.php

@@ -22,9 +22,7 @@ class User
      */
     protected static function addLocalUser($dbh, $user, $_user)
     {
-        echo "a new user\n";
         // needed fields: RSA key pair, user name (handle)
-
         $private_key = openssl_pkey_new();
         if ($private_key === false) {
             throw new \Federator\Exceptions\ServerError();
@@ -32,14 +30,20 @@ class User
         $public = openssl_pkey_get_details($private_key)['key'];
         $private = '';
         openssl_pkey_export($private_key, $private);
-        $sql = 'insert into users (id, externalid, rsapublic, rsaprivate) values (?, ?, ?, ?)';
-        $stmt = $dbh->prepare($sql);
-        if ($stmt === false) {
-            throw new \Federator\Exceptions\ServerError();
+        try {
+            $sql = 'insert into users (id, externalid, rsapublic, rsaprivate, validuntil)';
+            $sql .= ' values (?, ?, ?, ?, now() + interval 1 day) on duplicate key update validuntil=now() + interval 1 day';
+            $stmt = $dbh->prepare($sql);
+            if ($stmt === false) {
+                throw new \Federator\Exceptions\ServerError();
+            }
+            $stmt->bind_param("ssss", $_user, $user->externalid, $public, $private);
+            $stmt->execute();
+            $stmt->close();
+            $user->id = $_user;
+        } catch (\mysqli_sql_exception $e) {
+            error_log($e->getMessage());
         }
-        $stmt->bind_param("ssss", $_user, $user->externalid, $public, $private);
-        $stmt->execute();
-        $stmt->close();
     }
 
     /**
@@ -77,23 +81,50 @@ class User
      *          database handle
      * @param string $_name
      *          user name
+     * @param \Federator\Connector\Connector $connector
+     *          connector to fetch use with
+     * @param \Federator\Cache\Cache|null $cache
+     *          optional caching service
      * @return \Federator\Data\User
      */
-    public static function getUserByName($dbh, $_name)
+    public static function getUserByName($dbh, $_name, $connector, $cache)
     {
-        $sql = 'select id from users where id=?';
+        $user = false;
+        // ask cache
+        if ($cache !== null) {
+            $user = $cache->getRemoteUserByName($_name);
+        }
+        if ($user !== false) {
+            return $user;
+        }
+        // check our db
+        $sql = 'select id,externalid from users where id=? and validuntil>=now()';
         $stmt = $dbh->prepare($sql);
         if ($stmt === false) {
             throw new \Federator\Exceptions\ServerError();
         }
         $stmt->bind_param("s", $_name);
         $user = new \Federator\Data\User();
-        $ret = $stmt->bind_result($user->id);
+        $ret = $stmt->bind_result($user->id, $user->externalid);
         $stmt->execute();
         if ($ret) {
             $stmt->fetch();
         }
         $stmt->close();
+        if ($user->id === null) {
+            // ask connector for user-id
+            $ruser = $connector->getRemoteUserByName($_name);
+            if ($ruser !== false) {
+                $user = $ruser;
+            }
+        }
+        if ($cache !== null) {
+            print_r($user);
+            if ($user->id === null) {
+                self::addLocalUser($dbh, $user, $_name);
+            }
+            $cache->saveRemoteUserByName($_name, $user);
+        }
         return $user;
     }
 

php/federator/main.php

@@ -9,8 +9,6 @@
 
 namespace Federator;
 
-require_once($_SERVER['DOCUMENT_ROOT'] . '../vendor/autoload.php');
-
 /**
  * Base class for Api and related classes
  * @author Sascha Nitsch
@@ -74,6 +72,7 @@ class Main
      */
     public function __construct()
     {
+        require_once($_SERVER['DOCUMENT_ROOT'] . '../vendor/autoload.php');
         $this->responseCode = 200;
         $rootDir = $_SERVER['DOCUMENT_ROOT'] . '../';
         $config = parse_ini_file($rootDir . 'config.ini', true);
@@ -131,6 +130,26 @@ class Main
         return [$ret, $info];
     }
 
+    /**
+     * get cache
+     *
+     * @return \Federator\Cache\Cache
+     */
+    public function getCache()
+    {
+        return $this->cache;
+    }
+
+    /**
+     * get connector
+     *
+     * @return \Federator\Connector\Connector
+     */
+    public function getConnector()
+    {
+        return $this->connector;
+    }
+
     /**
      * get config
      * @return Array<String, Mixed>

php/federator/maintenance.php

@@ -112,7 +112,8 @@ class Maintenance
     {
         echo "usage php maintenance.php <command>\n";
         echo "command can be one of:\n";
-        echo " dbupgrade - this upgrades the db to the most recent version. Run this after you updated the program files\n";
+        echo " dbupgrade - this upgrades the db to the most recent version.\n";
+        echo " Run this after you updated the program files\n";
         exit();
     }
 }

plugins/federator/contentnation.php

@@ -13,6 +13,13 @@
   */
 class ContentNation implements Connector
 {
+    /**
+     * config parameter
+     *
+     * @var array<string, mixed> $config
+     */
+    private $config;
+
     /**
      * service-URL
      *
@@ -23,13 +30,43 @@ class ContentNation implements Connector
     /**
      * constructor
      *
-     * @param array<string, mixed> $config
      */
-    public function __construct($config)
+    public function __construct()
     {
+        $config = parse_ini_file($_SERVER['DOCUMENT_ROOT'] . '../contentnation.ini');
         $this->service = $config['service-uri'];
     }
 
+   /**
+     * get remote user by given name
+     *
+     * @param string $_name user/profile name
+     * @return \Federator\Data\User | false
+     */
+    public function getRemoteUserByName(string $_name)
+    {
+        // validate name
+        if (preg_match("/^[a-zA-Z0-9_\-]+$/", $_name) != 1) {
+            return false;
+        }
+        $remoteURL = $this->service . '/api/users/info?user=' . urlencode($_name);
+        $headers = ['Accept: application/json'];
+        [$response, $info] = \Federator\Main::getFromRemote($remoteURL, $headers);
+        if ($info['http_code'] != 200) {
+            return false;
+        }
+        $r = json_decode($response, true);
+        if ($r === false || $r === null || !is_array($r)) {
+            return false;
+        }
+        if (!array_key_exists('name', $r) || $r['name'] !== $_name) {
+            return false;
+        }
+        $user = new \Federator\Data\User();
+        $user->externalid = $_name;
+        return $user;
+    }
+
     /**
      * get remote user by given session
      *
@@ -78,6 +115,6 @@ namespace Federator;
  */
 function contentnation_load($main)
 {
-    $cn = new Connector\ContentNation($main->getConfig()['contentnation']);
+    $cn = new Connector\ContentNation();
     $main->setConnector($cn);
 }

plugins/federator/dummyconnector.php

@@ -19,6 +19,21 @@ class DummyConnector implements Connector
     {
     }
 
+    /**
+     * get remote user by name
+     * @param string $_name user or profile name
+     * @return \Federator\Data\User | false
+     */
+    public function getRemoteUserByName(string $_name)
+    {
+        // validate $_session and $user
+        $user = new \Federator\Data\User();
+        $user->externalid = $_name;
+        $user->permissions = [];
+        $user->session = '';
+        return $user;
+    }
+
     /**
      * get remote user by given session
      * @param string $_session session id

plugins/federator/rediscache.php

@@ -69,16 +69,34 @@ class RedisCache implements Cache
      * create key from session and user
      *
      * @param string $prefix prefix to create name spaces
-     * @param string $_session session id
-     * @param string $_user user/profile name
+     * @param string $input key name
      * @return string key
      */
-    private static function createKey($prefix, $_session, $_user)
+    private static function createKey($prefix, $input)
     {
-        $key = $prefix . '_';
-        $key .= md5($_session . $_user);
-        return $key;
+        return $prefix . '_' . md5($input);
     }
+
+    /**
+     * get remote user by given name
+     *
+     * @param string $_name user/profile name
+     * @return \Federator\Data\User | false
+     */
+    public function getRemoteUserByName(string $_name)
+    {
+        if (!$this->connected) {
+            $this->connect();
+        }
+        $key = self::createKey('u', $_name);
+        $data = $this->redis->get($key);
+        if ($data === false) {
+            return false;
+        }
+        $user = \Federator\Data\User::createFromJson($data);
+        return $user;
+    }
+
     /**
      * get remote user by given session
      *
@@ -91,7 +109,7 @@ class RedisCache implements Cache
         if (!$this->connected) {
             $this->connect();
         }
-        $key = self::createKey('u', $_session, $_user);
+        $key = self::createKey('s', $_session . $_user);
         $data = $this->redis->get($key);
         if ($data === false) {
             return false;
@@ -100,6 +118,20 @@ class RedisCache implements Cache
         return $user;
     }
 
+    /**
+     * save remote user by namr
+     *
+     * @param string $_name user/profile name
+     * @param \Federator\Data\User $user user data
+     * @return void
+     */
+    public function saveRemoteUserByName($_name, $user)
+    {
+        $key = self::createKey('u', $_name);
+        $serialized = $user->toJson();
+        $this->redis->setEx($key, $this->userTTL, $serialized,);
+    }
+
     /**
      * save remote user by given session
      *
@@ -110,7 +142,7 @@ class RedisCache implements Cache
      */
     public function saveRemoteUserBySession($_session, $_user, $user)
     {
-        $key = self::createKey('u', $_session, $_user);
+        $key = self::createKey('s', $_session . $_user);
         $serialized = $user->toJson();
         $this->redis->setEx($key, $this->userTTL, $serialized,);
     }

sql/2024-07-21.sql

@@ -0,0 +1,2 @@
+alter table users add `validuntil` timestamp default 0;
+update settings set `value`="2024-07-21" where `key`="database_version";