pixelfed/app/Services/WebfingerService.php

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<?php
namespace App\Services;
use Cache;
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use App\Profile;
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use App\Util\Webfinger\WebfingerUrl;
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use Illuminate\Support\Facades\Http;
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use App\Util\ActivityPub\Helpers;
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use App\Services\AccountService;
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class WebfingerService
{
public static function lookup($query, $mastodonMode = false)
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{
return (new self)->run($query, $mastodonMode);
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}
protected function run($query, $mastodonMode)
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{
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if($profile = Profile::whereUsername($query)->first()) {
return $mastodonMode ?
AccountService::getMastodon($profile->id, true) :
AccountService::get($profile->id);
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}
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$url = WebfingerUrl::generateWebfingerUrl($query);
if(!Helpers::validateUrl($url)) {
return [];
}
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$res = Http::retry(3, 100)
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->acceptJson()
->withHeaders([
'User-Agent' => '(Pixelfed/' . config('pixelfed.version') . '; +' . config('app.url') . ')'
])
->timeout(20)
->get($url);
if(!$res->successful()) {
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return [];
}
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$webfinger = $res->json();
if(!isset($webfinger['links']) || !is_array($webfinger['links']) || empty($webfinger['links'])) {
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return [];
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}
$link = collect($webfinger['links'])
->filter(function($link) {
return $link &&
isset($link['type']) &&
isset($link['href']) &&
$link['type'] == 'application/activity+json';
})
->pluck('href')
->first();
$profile = Helpers::profileFetch($link);
if(!$profile) {
return;
}
return $mastodonMode ?
AccountService::getMastodon($profile->id, true) :
AccountService::get($profile->id);
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}
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}