<?php
/**
- * @copyright Copyright (C) 2010-2021, the Friendica project
+ * @copyright Copyright (C) 2010-2023, the Friendica project
*
* @license GNU AGPL version 3 or any later version
*
namespace Friendica\Module;
+use DateTime;
+use Friendica\App;
+use Friendica\App\Router;
use Friendica\BaseModule;
+use Friendica\Core\L10n;
use Friendica\Core\Logger;
use Friendica\Core\System;
-use Friendica\Database\Database;
use Friendica\Database\DBA;
use Friendica\DI;
+use Friendica\Model\Contact;
+use Friendica\Model\Item;
+use Friendica\Model\Post;
+use Friendica\Model\User;
+use Friendica\Module\Api\ApiResponse;
+use Friendica\Module\Special\HTTPException as ModuleHTTPException;
use Friendica\Network\HTTPException;
+use Friendica\Object\Api\Mastodon\Status;
+use Friendica\Object\Api\Mastodon\TimelineOrderByTypes;
+use Friendica\Security\BasicAuth;
+use Friendica\Security\OAuth;
use Friendica\Util\DateTimeFormat;
-
-require_once __DIR__ . '/../../include/api.php';
+use Friendica\Util\Profiler;
+use Psr\Http\Message\ResponseInterface;
+use Psr\Log\LoggerInterface;
class BaseApi extends BaseModule
{
+ const LOG_PREFIX = 'API {action} - ';
+
+ const SCOPE_READ = 'read';
+ const SCOPE_WRITE = 'write';
+ const SCOPE_FOLLOW = 'follow';
+ const SCOPE_PUSH = 'push';
+
/**
- * @var string json|xml|rss|atom
+ * @var array
*/
- protected static $format = 'json';
+ protected static $boundaries = [];
+
/**
- * @var bool|int
+ * @var array
*/
- protected static $current_user_id;
+ protected static $request = [];
- public static function init(array $parameters = [])
- {
- $arguments = DI::args();
+ /** @var App */
+ protected $app;
- if (substr($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 ApiResponse */
+ protected $response;
- public static function delete(array $parameters = [])
+ public function __construct(App $app, L10n $l10n, App\BaseURL $baseUrl, App\Arguments $args, LoggerInterface $logger, Profiler $profiler, ApiResponse $response, array $server, array $parameters = [])
{
- if (!api_user()) {
- throw new HTTPException\UnauthorizedException(DI::l10n()->t('Permission denied.'));
- }
-
- $a = DI::app();
+ parent::__construct($l10n, $baseUrl, $args, $logger, $profiler, $response, $server, $parameters);
- if (!empty($a->user['uid']) && $a->user['uid'] != api_user()) {
- throw new HTTPException\ForbiddenException(DI::l10n()->t('Permission denied.'));
- }
+ $this->app = $app;
}
- public static function patch(array $parameters = [])
+ /**
+ * Additionally checks, if the caller is permitted to do this action
+ *
+ * {@inheritDoc}
+ *
+ * @throws HTTPException\ForbiddenException
+ */
+ public function run(ModuleHTTPException $httpException, array $request = [], bool $scopecheck = true): ResponseInterface
{
- if (!api_user()) {
- throw new HTTPException\UnauthorizedException(DI::l10n()->t('Permission denied.'));
+ if ($scopecheck) {
+ switch ($this->args->getMethod()) {
+ case Router::DELETE:
+ case Router::PATCH:
+ case Router::POST:
+ case Router::PUT:
+ self::checkAllowedScope(self::SCOPE_WRITE);
+
+ if (!self::getCurrentUserID()) {
+ throw new HTTPException\ForbiddenException($this->t('Permission denied.'));
+ }
+ break;
+ }
}
- $a = DI::app();
-
- if (!empty($a->user['uid']) && $a->user['uid'] != api_user()) {
- throw new HTTPException\ForbiddenException(DI::l10n()->t('Permission denied.'));
- }
+ return parent::run($httpException, $request);
}
- public static function post(array $parameters = [])
+ /**
+ * Processes data from GET requests and sets paging conditions
+ *
+ * @param array $request Custom REQUEST array
+ * @param array $condition Existing conditions to merge
+ * @return array paging data condition parameters data
+ * @throws \Exception
+ */
+ protected function addPagingConditions(array $request, array $condition): array
{
- if (!api_user()) {
- throw new HTTPException\UnauthorizedException(DI::l10n()->t('Permission denied.'));
+ $requested_order = $request['friendica_order'];
+ if ($requested_order == TimelineOrderByTypes::ID) {
+ if (!empty($request['max_id'])) {
+ $condition = DBA::mergeConditions($condition, ["`uri-id` < ?", intval($request['max_id'])]);
+ }
+
+ if (!empty($request['since_id'])) {
+ $condition = DBA::mergeConditions($condition, ["`uri-id` > ?", intval($request['since_id'])]);
+ }
+
+ if (!empty($request['min_id'])) {
+ $condition = DBA::mergeConditions($condition, ["`uri-id` > ?", intval($request['min_id'])]);
+ }
+ } else {
+ switch ($requested_order) {
+ case TimelineOrderByTypes::RECEIVED:
+ case TimelineOrderByTypes::CHANGED:
+ case TimelineOrderByTypes::EDITED:
+ case TimelineOrderByTypes::CREATED:
+ case TimelineOrderByTypes::COMMENTED:
+ $order_field = $requested_order;
+ break;
+ default:
+ throw new \Exception("Unrecognized request order: $requested_order");
+ }
+
+ if (!empty($request['max_id'])) {
+ $condition = DBA::mergeConditions($condition, ["`$order_field` < ?", DateTimeFormat::convert($request['max_id'], DateTimeFormat::MYSQL)]);
+ }
+
+ if (!empty($request['since_id'])) {
+ $condition = DBA::mergeConditions($condition, ["`$order_field` > ?", DateTimeFormat::convert($request['since_id'], DateTimeFormat::MYSQL)]);
+ }
+
+ if (!empty($request['min_id'])) {
+ $condition = DBA::mergeConditions($condition, ["`$order_field` > ?", DateTimeFormat::convert($request['min_id'], DateTimeFormat::MYSQL)]);
+ }
}
- $a = DI::app();
-
- if (!empty($a->user['uid']) && $a->user['uid'] != api_user()) {
- throw new HTTPException\ForbiddenException(DI::l10n()->t('Permission denied.'));
- }
+ return $condition;
}
- public static function put(array $parameters = [])
+ /**
+ * Processes data from GET requests and sets paging conditions
+ *
+ * @param array $request Custom REQUEST array
+ * @param array $params Existing $params element to build on
+ * @return array ordering data added to the params blocks that was passed in
+ * @throws \Exception
+ */
+ protected function buildOrderAndLimitParams(array $request, array $params = []): array
{
- if (!api_user()) {
- throw new HTTPException\UnauthorizedException(DI::l10n()->t('Permission denied.'));
+ $requested_order = $request['friendica_order'];
+ switch ($requested_order) {
+ case TimelineOrderByTypes::CHANGED:
+ case TimelineOrderByTypes::CREATED:
+ case TimelineOrderByTypes::COMMENTED:
+ case TimelineOrderByTypes::EDITED:
+ case TimelineOrderByTypes::RECEIVED:
+ $order_field = $requested_order;
+ break;
+ case TimelineOrderByTypes::ID:
+ default:
+ $order_field = 'uri-id';
}
- $a = DI::app();
-
- if (!empty($a->user['uid']) && $a->user['uid'] != api_user()) {
- throw new HTTPException\ForbiddenException(DI::l10n()->t('Permission denied.'));
+ if (!empty($request['min_id'])) {
+ $params['order'] = [$order_field];
+ } else {
+ $params['order'] = [$order_field => true];
}
+
+ $params['limit'] = $request['limit'];
+
+ return $params;
}
/**
- * Quit execution with the message that the endpoint isn't implemented
+ * Update the ID/time boundaries for this result set. Used for building Link Headers
*
- * @param string $method
+ * @param Status $status
+ * @param array $post_item
+ * @param string $order
* @return void
+ * @throws \Exception
*/
- public static function unsupported(string $method = 'all')
+ protected function updateBoundaries(Status $status, array $post_item, string $order)
{
- $path = DI::args()->getQueryString();
- Logger::info('Unimplemented API call', ['method' => $method, 'path' => $path, 'agent' => $_SERVER['HTTP_USER_AGENT'] ?? '', 'request' => $_REQUEST ?? []]);
- $error = DI::l10n()->t('API endpoint %s %s is not implemented', strtoupper($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, $errorobj->toArray());
+ try {
+ switch ($order) {
+ case TimelineOrderByTypes::CHANGED:
+ if (!empty($status->friendicaExtension()->changedAt())) {
+ self::setBoundaries(new DateTime(DateTimeFormat::utc($status->friendicaExtension()->changedAt(), DateTimeFormat::JSON)));
+ }
+ break;
+ case TimelineOrderByTypes::CREATED:
+ if (!empty($status->createdAt())) {
+ self::setBoundaries(new DateTime(DateTimeFormat::utc($status->createdAt(), DateTimeFormat::JSON)));
+ }
+ break;
+ case TimelineOrderByTypes::COMMENTED:
+ if (!empty($status->friendicaExtension()->commentedAt())) {
+ self::setBoundaries(new DateTime(DateTimeFormat::utc($status->friendicaExtension()->commentedAt(), DateTimeFormat::JSON)));
+ }
+ break;
+ case TimelineOrderByTypes::EDITED:
+ if (!empty($status->editedAt())) {
+ self::setBoundaries(new DateTime(DateTimeFormat::utc($status->editedAt(), DateTimeFormat::JSON)));
+ }
+ break;
+ case TimelineOrderByTypes::RECEIVED:
+ if (!empty($status->friendicaExtension()->receivedAt())) {
+ self::setBoundaries(new DateTime(DateTimeFormat::utc($status->friendicaExtension()->receivedAt(), DateTimeFormat::JSON)));
+ }
+ break;
+ case TimelineOrderByTypes::ID:
+ default:
+ self::setBoundaries($post_item['uri-id']);
+ }
+ } catch (\Exception $e) {
+ Logger::debug('Error processing page boundary calculation, skipping', ['error' => $e]);
+ }
}
/**
- * Log in user via OAuth1 or Simple HTTP Auth.
- *
- * Simple Auth allow username in form of <pre>user@server</pre>, ignoring server part
+ * Processes data from GET requests and sets defaults
*
- * @return bool Was a user authenticated?
- * @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
+ * @param array $defaults Associative array of expected request keys and their default typed value. A null
+ * value will remove the request key from the resulting value array.
+ * @param array $request Custom REQUEST array, superglobal instead
+ * @return array request data
+ * @throws \Exception
*/
- protected static function login()
+ public function getRequest(array $defaults, array $request): array
{
- if (empty(self::$current_user_id)) {
- self::$current_user_id = self::getUserByBearer();
- }
+ self::$request = $request;
+ self::$boundaries = [];
- if (empty(self::$current_user_id)) {
- // The execution stops here if no one is logged in
- api_login(DI::app());
- }
+ unset(self::$request['pagename']);
- self::$current_user_id = api_user();
-
- return (bool)self::$current_user_id;
+ return $this->checkDefaults($defaults, $request);
}
/**
- * Get current user id, returns 0 if not logged in
- *
- * @return int User ID
+ * Set boundaries for the "link" header
+ * @param array $boundaries
+ * @param int|\DateTime $id
*/
- protected static function getCurrentUserID()
+ protected static function setBoundaries($id)
{
- if (empty(self::$current_user_id)) {
- self::$current_user_id = self::getUserByBearer();
+ if (!isset(self::$boundaries['min'])) {
+ self::$boundaries['min'] = $id;
}
- if (empty(self::$current_user_id)) {
- // Fetch the user id if logged in - but don't fail if not
- api_login(DI::app(), false);
-
- self::$current_user_id = api_user();
+ if (!isset(self::$boundaries['max'])) {
+ self::$boundaries['max'] = $id;
}
- return (int)self::$current_user_id;
+ self::$boundaries['min'] = min(self::$boundaries['min'], $id);
+ self::$boundaries['max'] = max(self::$boundaries['max'], $id);
}
/**
- * Get the user id via the Bearer token
- *
- * @return int User-ID
+ * Get the "link" header with "next" and "prev" links
+ * @return string
*/
- private static function getUserByBearer()
+ protected static function getLinkHeader(bool $asDate = false): string
{
- $authorization = $_SERVER['HTTP_AUTHORIZATION'] ?? '';
-
- if (substr($authorization, 0, 7) != 'Bearer ') {
- return 0;
+ if (empty(self::$boundaries)) {
+ return '';
}
- $bearer = trim(substr($authorization, 7));
- $condition = ['access_token' => $bearer];
- $token = DBA::selectFirst('application-token', ['uid'], $condition);
- if (!DBA::isResult($token)) {
- Logger::warning('Token not found', $condition);
- return 0;
+ $request = self::$request;
+
+ unset($request['min_id']);
+ unset($request['max_id']);
+ unset($request['since_id']);
+
+ $prev_request = $next_request = $request;
+
+ if ($asDate) {
+ $max_date = self::$boundaries['max'];
+ $min_date = self::$boundaries['min'];
+ $prev_request['min_id'] = $max_date->format(DateTimeFormat::JSON);
+ $next_request['max_id'] = $min_date->format(DateTimeFormat::JSON);
+ } else {
+ $prev_request['min_id'] = self::$boundaries['max'];
+ $next_request['max_id'] = self::$boundaries['min'];
}
- Logger::info('Token found', $token);
- return $token['uid'];
+
+ $command = DI::baseUrl() . '/' . DI::args()->getCommand();
+
+ $prev = $command . '?' . http_build_query($prev_request);
+ $next = $command . '?' . http_build_query($next_request);
+
+ return 'Link: <' . $next . '>; rel="next", <' . $prev . '>; rel="prev"';
}
/**
- * Get the application record via the proved request header fields
- *
- * @return array application record
+ * Get the "link" header with "next" and "prev" links for an offset/limit type call
+ * @return string
*/
- public static function getApplication()
+ protected static function getOffsetAndLimitLinkHeader(int $offset, int $limit): string
{
- $redirect_uri = $_REQUEST['redirect_uri'] ?? '';
- $client_id = $_REQUEST['client_id'] ?? '';
- $client_secret = $_REQUEST['client_secret'] ?? '';
+ $request = self::$request;
- if ((empty($redirect_uri) && empty($client_secret)) || empty($client_id)) {
- Logger::warning('Incomplete request', ['request' => $_REQUEST]);
- return [];
- }
+ unset($request['offset']);
+ $request['limit'] = $limit;
- $condition = ['client_id' => $client_id];
- if (!empty($client_secret)) {
- $condition['client_secret'] = $client_secret;
- }
- if (!empty($redirect_uri)) {
- $condition['redirect_uri'] = $redirect_uri;
+ $prev_request = $next_request = $request;
+
+ $prev_request['offset'] = $offset - $limit;
+ $next_request['offset'] = $offset + $limit;
+
+ $command = DI::baseUrl() . '/' . DI::args()->getCommand();
+
+ $prev = $command . '?' . http_build_query($prev_request);
+ $next = $command . '?' . http_build_query($next_request);
+
+ if ($prev_request['offset'] >= 0) {
+ return 'Link: <' . $next . '>; rel="next", <' . $prev . '>; rel="prev"';
+ } else {
+ return 'Link: <' . $next . '>; rel="next"';
}
+ }
- $application = DBA::selectFirst('application', [], $condition);
- if (!DBA::isResult($application)) {
- Logger::warning('Application not found', $condition);
- return [];
+ /**
+ * Set the "link" header with "next" and "prev" links
+ * @return void
+ */
+ protected static function setLinkHeader(bool $asDate = false)
+ {
+ $header = self::getLinkHeader($asDate);
+ if (!empty($header)) {
+ header($header);
}
- return $application;
}
/**
- * Check if an token for the application and user exists
- *
- * @param array $application
- * @param integer $uid
- * @return boolean
+ * Set the "link" header with "next" and "prev" links
+ * @return void
*/
- public static function existsTokenForUser(array $application, int $uid)
+ protected static function setLinkHeaderByOffsetLimit(int $offset, int $limit)
{
- return DBA::exists('application-token', ['application-id' => $application['id'], 'uid' => $uid]);
+ $header = self::getOffsetAndLimitLinkHeader($offset, $limit);
+ if (!empty($header)) {
+ header($header);
+ }
}
/**
- * Fetch the token for the given application and user
+ * Check if the app is known to support quoted posts
*
- * @param array $application
- * @param integer $uid
- * @return array application record
+ * @return bool
*/
- public static function getTokenForUser(array $application, int $uid)
+ public static function appSupportsQuotes(): bool
{
- return DBA::selectFirst('application-token', [], ['application-id' => $application['id'], 'uid' => $uid]);
+ $token = self::getCurrentApplication();
+ return (!empty($token['name']) && in_array($token['name'], ['Fedilab']));
}
/**
- * Create and fetch an token for the application and user
+ * Get current application token
*
- * @param array $application
- * @param integer $uid
- * @return array application record
+ * @return array token
*/
- public static function createTokenForUser(array $application, int $uid)
+ public static function getCurrentApplication()
{
- $code = bin2hex(random_bytes(32));
- $access_token = bin2hex(random_bytes(32));
+ $token = OAuth::getCurrentApplicationToken();
- $fields = ['application-id' => $application['id'], 'uid' => $uid, 'code' => $code, 'access_token' => $access_token, 'created_at' => DateTimeFormat::utcNow(DateTimeFormat::MYSQL)];
- if (!DBA::insert('application-token', $fields, Database::INSERT_UPDATE)) {
- return [];
+ if (empty($token)) {
+ $token = BasicAuth::getCurrentApplicationToken();
}
- return DBA::selectFirst('application-token', [], ['application-id' => $application['id'], 'uid' => $uid]);
+ return $token;
}
/**
- * Get user info array.
+ * Get current user id, returns 0 if not logged in
*
- * @param int|string $contact_id Contact ID or URL
- * @return array|bool
- * @throws HTTPException\BadRequestException
- * @throws HTTPException\InternalServerErrorException
- * @throws HTTPException\UnauthorizedException
- * @throws \ImagickException
+ * @return int User ID
*/
- protected static function getUser($contact_id = null)
+ public static function getCurrentUserID()
{
- return api_get_user(DI::app(), $contact_id);
+ $uid = OAuth::getCurrentUserID();
+
+ if (empty($uid)) {
+ $uid = BasicAuth::getCurrentUserID(false);
+ }
+
+ return (int)$uid;
}
/**
- * Formats the data according to the data type
+ * Check if the provided scope does exist.
+ * halts execution on missing scope or when not logged in.
*
- * @param string $root_element
- * @param array $data An array with a single element containing the returned result
- * @return false|string
+ * @param string $scope the requested scope (read, write, follow, push)
*/
- protected static function format(string $root_element, array $data)
+ public static function checkAllowedScope(string $scope)
{
- $return = api_format_data($root_element, self::$format, $data);
+ $token = self::getCurrentApplication();
- switch (self::$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` > ?", Item::GRAVITY_PARENT, $uid, $datefrom];
+ $posts_day = Post::countThread($condition);
+
+ if ($posts_day > $throttle_day) {
+ Logger::notice('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` > ?", Item::GRAVITY_PARENT, $uid, $datefrom];
+ $posts_week = Post::countThread($condition);
+
+ if ($posts_week > $throttle_week) {
+ Logger::notice('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` > ?", Item::GRAVITY_PARENT, $uid, $datefrom];
+ $posts_month = Post::countThread($condition);
+
+ if ($posts_month > $throttle_month) {
+ Logger::notice('Monthly posting limit reached', ['uid' => $uid, 'posts' => $posts_month, 'limit' => $throttle_month]);
+ $error = DI::l10n()->t('Too Many Requests');
+ $error_description = DI::l10n()->tt('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());
+ }
+ }
+ }
+
+ public static function getContactIDForSearchterm(string $screen_name = null, string $profileurl = null, int $cid = null, int $uid)
+ {
+ if (!empty($cid)) {
+ return $cid;
+ }
+
+ if (!empty($profileurl)) {
+ return Contact::getIdForURL($profileurl);
+ }
+
+ if (empty($cid) && !empty($screen_name)) {
+ if (strpos($screen_name, '@') !== false) {
+ return Contact::getIdForURL($screen_name, 0, false);
+ }
+
+ $user = User::getByNickname($screen_name, ['uid']);
+ if (!empty($user['uid'])) {
+ return Contact::getPublicIdByUserId($user['uid']);
+ }
+ }
+
+ if ($uid != 0) {
+ return Contact::getPublicIdByUserId($uid);
+ }
+
+ return null;
}
}