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 Illuminate\Support\Facades\Redis;
use App\Util\Webfinger\WebfingerUrl;
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use Illuminate\Support\Facades\Http;
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use App\Util\ActivityPub\Helpers;
use App\Transformer\Api\AccountTransformer;
use League\Fractal;
use League\Fractal\Serializer\ArraySerializer;
use League\Fractal\Pagination\IlluminatePaginatorAdapter;
class WebfingerService
{
public static function lookup($query)
{
return (new self)->run($query);
}
protected function run($query)
{
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if($profile = Profile::whereUsername($query)->first()) {
$fractal = new Fractal\Manager();
$fractal->setSerializer(new ArraySerializer());
$resource = new Fractal\Resource\Item($profile, new AccountTransformer());
return $fractal->createData($resource)->toArray();
}
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$url = WebfingerUrl::generateWebfingerUrl($query);
if(!Helpers::validateUrl($url)) {
return [];
}
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$res = Http::retry(3, 500)
->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'])) {
return ['nolinks'];
}
$link = collect($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);
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$fractal = new Fractal\Manager();
$fractal->setSerializer(new ArraySerializer());
$resource = new Fractal\Resource\Item($profile, new AccountTransformer());
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$res = $fractal->createData($resource)->toArray();
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return $res;
}
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}