pixelfed/app/Services/AutolinkService.php

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2021-11-16 02:33:52 +00:00
<?php
namespace App\Services;
use Cache;
use App\Profile;
use Illuminate\Support\Str;
use Illuminate\Support\Facades\Http;
use App\Util\Webfinger\WebfingerUrl;
class AutolinkService
{
const CACHE_KEY = 'pf:services:autolink:';
public static function mentionedUsernameExists($username)
{
$key = 'pf:services:autolink:userexists:' . hash('sha256', $username);
return Cache::remember($key, 3600, function() use($username) {
$remote = Str::of($username)->contains('@');
$profile = Profile::whereUsername($username)->first();
if($profile) {
if($profile->domain != null) {
$instance = InstanceService::getByDomain($profile->domain);
if($instance && $instance->banned == true) {
return false;
}
}
return true;
} else {
if($remote) {
$parts = explode('@', $username);
$domain = last($parts);
$instance = InstanceService::getByDomain($domain);
if($instance) {
if($instance->banned == true) {
return false;
} else {
$wf = WebfingerUrl::generateWebfingerUrl($username);
$res = Http::head($wf);
return $res->ok();
}
} else {
$wf = WebfingerUrl::generateWebfingerUrl($username);
$res = Http::head($wf);
return $res->ok();
}
}
}
return false;
});
}
}