]> git.mxchange.org Git - friendica.git/blobdiff - src/Module/BaseApi.php
Merge remote-tracking branch 'upstream/develop' into api4
[friendica.git] / src / Module / BaseApi.php
index e629ad99109f711a4caacd3924b31c0455c886b5..a34f25f938726bf87bf5f2c9fc9a21810521fee4 100644 (file)
@@ -25,112 +25,66 @@ use Friendica\BaseModule;
 use Friendica\Core\Logger;
 use Friendica\Core\System;
 use Friendica\DI;
+use Friendica\Model\Post;
 use Friendica\Network\HTTPException;
 use Friendica\Security\BasicAuth;
 use Friendica\Security\OAuth;
+use Friendica\Util\DateTimeFormat;
 use Friendica\Util\HTTPInputData;
 
-require_once __DIR__ . '/../../include/api.php';
-
 class BaseApi extends BaseModule
 {
-       /** @deprecated Use OAuth class constant */
        const SCOPE_READ   = 'read';
-       /** @deprecated Use OAuth class constant */
        const SCOPE_WRITE  = 'write';
-       /** @deprecated Use OAuth class constant */
        const SCOPE_FOLLOW = 'follow';
-       /** @deprecated Use OAuth class constant */
        const SCOPE_PUSH   = 'push';
 
        /**
-        * @var string json|xml|rss|atom
+        * @var array
         */
-       protected static $format = 'json';
-
-       public static function init(array $parameters = [])
-       {
-               $arguments = DI::args();
+       protected static $boundaries = [];
 
-               if (substr($arguments->getCommand(), -4) === '.xml') {
-                       self::$format = 'xml';
-               }
-               if (substr($arguments->getCommand(), -4) === '.rss') {
-                       self::$format = 'rss';
-               }
-               if (substr($arguments->getCommand(), -4) === '.atom') {
-                       self::$format = 'atom';
-               }
-       }
+       /**
+        * @var array
+        */
+       protected static $request = [];
 
-       public static function delete(array $parameters = [])
+       public function delete()
        {
-               if (!api_user()) {
-                       throw new HTTPException\UnauthorizedException(DI::l10n()->t('Permission denied.'));
-               }
-
-               $a = DI::app();
+               self::checkAllowedScope(self::SCOPE_WRITE);
 
-               if (!empty($a->user['uid']) && $a->user['uid'] != api_user()) {
+               if (!DI::app()->isLoggedIn()) {
                        throw new HTTPException\ForbiddenException(DI::l10n()->t('Permission denied.'));
                }
        }
 
-       public static function patch(array $parameters = [])
+       public function patch()
        {
-               if (!api_user()) {
-                       throw new HTTPException\UnauthorizedException(DI::l10n()->t('Permission denied.'));
-               }
+               self::checkAllowedScope(self::SCOPE_WRITE);
 
-               $a = DI::app();
-
-               if (!empty($a->user['uid']) && $a->user['uid'] != api_user()) {
+               if (!DI::app()->isLoggedIn()) {
                        throw new HTTPException\ForbiddenException(DI::l10n()->t('Permission denied.'));
                }
        }
 
-       public static function post(array $parameters = [])
+       public function post()
        {
-               if (!api_user()) {
-                       throw new HTTPException\UnauthorizedException(DI::l10n()->t('Permission denied.'));
-               }
+               self::checkAllowedScope(self::SCOPE_WRITE);
 
-               $a = DI::app();
-
-               if (!empty($a->user['uid']) && $a->user['uid'] != api_user()) {
+               if (!DI::app()->isLoggedIn()) {
                        throw new HTTPException\ForbiddenException(DI::l10n()->t('Permission denied.'));
                }
        }
 
-       public static function put(array $parameters = [])
+       public function put()
        {
-               if (!api_user()) {
-                       throw new HTTPException\UnauthorizedException(DI::l10n()->t('Permission denied.'));
-               }
+               self::checkAllowedScope(self::SCOPE_WRITE);
 
-               $a = DI::app();
-
-               if (!empty($a->user['uid']) && $a->user['uid'] != api_user()) {
+               if (!DI::app()->isLoggedIn()) {
                        throw new HTTPException\ForbiddenException(DI::l10n()->t('Permission denied.'));
                }
        }
 
-       /**
-        * Quit execution with the message that the endpoint isn't implemented
-        *
-        * @param string $method
-        * @return void
-        */
-       public static function unsupported(string $method = 'all')
-       {
-               $path = DI::args()->getQueryString();
-               Logger::info('Unimplemented API call', ['method' => $method, 'path' => $path, 'agent' => $_SERVER['HTTP_USER_AGENT'] ?? '', 'request' => HTTPInputData::process()]);
-               $error = DI::l10n()->t('API endpoint %s %s is not implemented', strtoupper($method), $path);
-               $error_description = DI::l10n()->t('The API endpoint is currently not implemented but might be in the future.');
-               $errorobj = new \Friendica\Object\Api\Mastodon\Error($error, $error_description);
-               System::jsonError(501, $errorobj->toArray());
-       }
-
        /**
         * Processes data from GET requests and sets defaults
         *
@@ -141,6 +95,11 @@ class BaseApi extends BaseModule
                $httpinput = HTTPInputData::process();
                $input = array_merge($httpinput['variables'], $httpinput['files'], $_REQUEST);
 
+               self::$request    = $input;
+               self::$boundaries = [];
+
+               unset(self::$request['pagename']);
+
                $request = [];
 
                foreach ($defaults as $parameter => $defaultvalue) {
@@ -173,36 +132,51 @@ class BaseApi extends BaseModule
        }
 
        /**
-        * Log in user via OAuth1 or Simple HTTP Auth.
-        *
-        * Simple Auth allow username in form of <pre>user@server</pre>, ignoring server part
-        *
-        * @param string $scope the requested scope (read, write, follow)
-        *
-        * @throws HTTPException\ForbiddenException
-        * @throws HTTPException\UnauthorizedException
-        * @throws HTTPException\InternalServerErrorException
-        * @hook  'authenticate'
-        *               array $addon_auth
-        *               'username' => username from login form
-        *               'password' => password from login form
-        *               'authenticated' => return status,
-        *               'user_record' => return authenticated user record
+        * Set boundaries for the "link" header
+        * @param array $boundaries
+        * @param int $id
         */
-       protected static function login(string $scope)
+       protected static function setBoundaries(int $id)
        {
-               $token = OAuth::getCurrentApplicationToken();
-               if (!empty($token)) {
-                       if (!OAuth::isAllowedScope($scope)) {
-                               DI::mstdnError()->Forbidden();
-                       }
-                       $uid = OAuth::getCurrentUserID();
+               if (!isset(self::$boundaries['min'])) {
+                       self::$boundaries['min'] = $id;
                }
 
-               if (empty($uid)) {
-                       // The execution stops here if no one is logged in
-                       BasicAuth::getCurrentUserID(true);
+               if (!isset(self::$boundaries['max'])) {
+                       self::$boundaries['max'] = $id;
                }
+
+               self::$boundaries['min'] = min(self::$boundaries['min'], $id);
+               self::$boundaries['max'] = max(self::$boundaries['max'], $id);
+       }
+
+       /**
+        * Set the "link" header with "next" and "prev" links
+        * @return void
+        */
+       protected static function setLinkHeader()
+       {
+               if (empty(self::$boundaries)) {
+                       return;
+               }
+
+               $request = self::$request;
+
+               unset($request['min_id']);
+               unset($request['max_id']);
+               unset($request['since_id']);
+
+               $prev_request = $next_request = $request;
+
+               $prev_request['min_id'] = self::$boundaries['max'];
+               $next_request['max_id'] = self::$boundaries['min'];
+
+               $command = DI::baseUrl() . '/' . DI::args()->getCommand();
+
+               $prev = $command . '?' . http_build_query($prev_request);
+               $next = $command . '?' . http_build_query($next_request);
+
+               header('Link: <' . $next . '>; rel="next", <' . $prev . '>; rel="prev"');
        }
 
        /**
@@ -238,67 +212,82 @@ class BaseApi extends BaseModule
        }
 
        /**
-        * Get user info array.
+        * Check if the provided scope does exist.
+        * halts execution on missing scope or when not logged in.
         *
-        * @param int|string $contact_id Contact ID or URL
-        * @return array|bool
-        * @throws HTTPException\BadRequestException
-        * @throws HTTPException\InternalServerErrorException
-        * @throws HTTPException\UnauthorizedException
-        * @throws \ImagickException
+        * @param string $scope the requested scope (read, write, follow, push)
         */
-       protected static function getUser($contact_id = null)
+       public static function checkAllowedScope(string $scope)
        {
-               return api_get_user(DI::app(), $contact_id);
-       }
+               $token = self::getCurrentApplication();
 
-       /**
-        * Formats the data according to the data type
-        *
-        * @param string $root_element
-        * @param array $data An array with a single element containing the returned result
-        * @return false|string
-        */
-       protected static function format(string $root_element, array $data)
-       {
-               $return = api_format_data($root_element, self::$format, $data);
-
-               switch (self::$format) {
-                       case "xml":
-                               header("Content-Type: text/xml");
-                               break;
-                       case "json":
-                               header("Content-Type: application/json");
-                               if (!empty($return)) {
-                                       $json = json_encode(end($return));
-                                       if (!empty($_GET['callback'])) {
-                                               $json = $_GET['callback'] . "(" . $json . ")";
-                                       }
-                                       $return = $json;
-                               }
-                               break;
-                       case "rss":
-                               header("Content-Type: application/rss+xml");
-                               $return  = '<?xml version="1.0" encoding="UTF-8"?>' . "\n" . $return;
-                               break;
-                       case "atom":
-                               header("Content-Type: application/atom+xml");
-                               $return = '<?xml version="1.0" encoding="UTF-8"?>' . "\n" . $return;
-                               break;
+               if (empty($token)) {
+                       Logger::notice('Empty application token');
+                       DI::mstdnError()->Forbidden();
                }
 
-               return $return;
+               if (!isset($token[$scope])) {
+                       Logger::warning('The requested scope does not exist', ['scope' => $scope, 'application' => $token]);
+                       DI::mstdnError()->Forbidden();
+               }
+
+               if (empty($token[$scope])) {
+                       Logger::warning('The requested scope is not allowed', ['scope' => $scope, 'application' => $token]);
+                       DI::mstdnError()->Forbidden();
+               }
        }
 
-       /**
-        * Creates the XML from a JSON style array
-        *
-        * @param $data
-        * @param $root_element
-        * @return string
-        */
-       protected static function createXml($data, $root_element)
+       public static function checkThrottleLimit()
        {
-               return api_create_xml($data, $root_element);
+               $uid = self::getCurrentUserID();
+
+               // Check for throttling (maximum posts per day, week and month)
+               $throttle_day = DI::config()->get('system', 'throttle_limit_day');
+               if ($throttle_day > 0) {
+                       $datefrom = date(DateTimeFormat::MYSQL, time() - 24*60*60);
+
+                       $condition = ["`gravity` = ? AND `uid` = ? AND `wall` AND `received` > ?", GRAVITY_PARENT, $uid, $datefrom];
+                       $posts_day = Post::countThread($condition);
+
+                       if ($posts_day > $throttle_day) {
+                               Logger::info('Daily posting limit reached', ['uid' => $uid, 'posts' => $posts_day, 'limit' => $throttle_day]);
+                               $error = DI::l10n()->t('Too Many Requests');
+                               $error_description = DI::l10n()->tt("Daily posting limit of %d post reached. The post was rejected.", "Daily posting limit of %d posts reached. The post was rejected.", $throttle_day);
+                               $errorobj = new \Friendica\Object\Api\Mastodon\Error($error, $error_description);
+                               System::jsonError(429, $errorobj->toArray());
+                       }
+               }
+
+               $throttle_week = DI::config()->get('system', 'throttle_limit_week');
+               if ($throttle_week > 0) {
+                       $datefrom = date(DateTimeFormat::MYSQL, time() - 24*60*60*7);
+
+                       $condition = ["`gravity` = ? AND `uid` = ? AND `wall` AND `received` > ?", GRAVITY_PARENT, $uid, $datefrom];
+                       $posts_week = Post::countThread($condition);
+
+                       if ($posts_week > $throttle_week) {
+                               Logger::info('Weekly posting limit reached', ['uid' => $uid, 'posts' => $posts_week, 'limit' => $throttle_week]);
+                               $error = DI::l10n()->t('Too Many Requests');
+                               $error_description = DI::l10n()->tt("Weekly posting limit of %d post reached. The post was rejected.", "Weekly posting limit of %d posts reached. The post was rejected.", $throttle_week);
+                               $errorobj = new \Friendica\Object\Api\Mastodon\Error($error, $error_description);
+                               System::jsonError(429, $errorobj->toArray());
+                       }
+               }
+
+               $throttle_month = DI::config()->get('system', 'throttle_limit_month');
+               if ($throttle_month > 0) {
+                       $datefrom = date(DateTimeFormat::MYSQL, time() - 24*60*60*30);
+
+                       $condition = ["`gravity` = ? AND `uid` = ? AND `wall` AND `received` > ?", GRAVITY_PARENT, $uid, $datefrom];
+                       $posts_month = Post::countThread($condition);
+
+                       if ($posts_month > $throttle_month) {
+                               Logger::info('Monthly posting limit reached', ['uid' => $uid, 'posts' => $posts_month, 'limit' => $throttle_month]);
+                               $error = DI::l10n()->t('Too Many Requests');
+                               $error_description = DI::l10n()->t("Monthly posting limit of %d post reached. The post was rejected.", "Monthly posting limit of %d posts reached. The post was rejected.", $throttle_month);
+                               $errorobj = new \Friendica\Object\Api\Mastodon\Error($error, $error_description);
+                               System::jsonError(429, $errorobj->toArray());
+                       }
+               }
        }
 }