kopia lustrzana https://github.com/pixelfed/pixelfed
224 wiersze
5.8 KiB
PHP
224 wiersze
5.8 KiB
PHP
<?php
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namespace App\Jobs\InboxPipeline;
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use Cache;
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use App\Profile;
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use App\Util\ActivityPub\{
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Helpers,
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HttpSignature,
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Inbox
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};
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use Illuminate\Bus\Queueable;
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use Illuminate\Contracts\Queue\ShouldQueue;
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use Illuminate\Foundation\Bus\Dispatchable;
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use Illuminate\Queue\InteractsWithQueue;
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use Illuminate\Queue\SerializesModels;
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use Zttp\Zttp;
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use App\Jobs\DeletePipeline\DeleteRemoteProfilePipeline;
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class DeleteWorker implements ShouldQueue
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{
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use Dispatchable, InteractsWithQueue, Queueable, SerializesModels;
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protected $headers;
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protected $payload;
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public $timeout = 60;
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public $tries = 1;
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/**
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* Create a new job instance.
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*
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* @return void
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*/
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public function __construct($headers, $payload)
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{
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$this->headers = $headers;
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$this->payload = $payload;
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}
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/**
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* Execute the job.
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*
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* @return void
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*/
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public function handle()
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{
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$profile = null;
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$headers = $this->headers;
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$payload = json_decode($this->payload, true, 8);
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if(isset($payload['id'])) {
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$lockKey = 'pf:ap:del-lock:' . hash('sha256', $payload['id']);
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if(Cache::get($lockKey) !== null) {
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// Job processed already
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return 1;
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}
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Cache::put($lockKey, 1, 300);
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}
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if(!isset($headers['signature']) || !isset($headers['date'])) {
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return;
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}
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if(empty($headers) || empty($payload)) {
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return;
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}
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if( $payload['type'] === 'Delete' &&
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( ( is_string($payload['object']) &&
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$payload['object'] === $payload['actor'] ) ||
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( is_array($payload['object']) &&
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isset($payload['object']['id'], $payload['object']['type']) &&
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$payload['object']['type'] === 'Person' &&
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$payload['actor'] === $payload['object']['id']
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))
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) {
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$actor = $payload['actor'];
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$hash = strlen($actor) <= 48 ?
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'b:' . base64_encode($actor) :
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'h:' . hash('sha256', $actor);
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$lockKey = 'ap:inbox:actor-delete-exists:lock:' . $hash;
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Cache::lock($lockKey, 10)->block(5, function () use(
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$headers,
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$payload,
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$actor,
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$hash
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) {
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$key = 'ap:inbox:actor-delete-exists:' . $hash;
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$actorDelete = Cache::remember($key, now()->addMinutes(15), function() use($actor) {
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return Profile::whereRemoteUrl($actor)
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->whereNotNull('domain')
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->exists();
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});
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if($actorDelete) {
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if($this->verifySignature($headers, $payload) == true) {
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Cache::set($key, false);
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$profile = Profile::whereNotNull('domain')
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->whereNull('status')
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->whereRemoteUrl($actor)
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->first();
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if($profile) {
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DeleteRemoteProfilePipeline::dispatch($profile)->onQueue('delete');
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}
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return;
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} else {
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// Signature verification failed, exit.
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return;
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}
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} else {
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// Remote user doesn't exist, exit early.
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return;
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}
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});
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return;
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}
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$profile = null;
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if($this->verifySignature($headers, $payload) == true) {
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(new Inbox($headers, $profile, $payload))->handle();
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return;
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} else if($this->blindKeyRotation($headers, $payload) == true) {
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(new Inbox($headers, $profile, $payload))->handle();
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return;
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} else {
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return;
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}
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}
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protected function verifySignature($headers, $payload)
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{
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$body = $this->payload;
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$bodyDecoded = $payload;
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$signature = is_array($headers['signature']) ? $headers['signature'][0] : $headers['signature'];
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$date = is_array($headers['date']) ? $headers['date'][0] : $headers['date'];
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if(!$signature) {
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return;
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}
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if(!$date) {
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return;
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}
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if(!now()->parse($date)->gt(now()->subDays(1)) ||
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!now()->parse($date)->lt(now()->addDays(1))
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) {
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return;
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}
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$signatureData = HttpSignature::parseSignatureHeader($signature);
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$keyId = Helpers::validateUrl($signatureData['keyId']);
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$id = Helpers::validateUrl($bodyDecoded['id']);
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$keyDomain = parse_url($keyId, PHP_URL_HOST);
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$idDomain = parse_url($id, PHP_URL_HOST);
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if(isset($bodyDecoded['object'])
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&& is_array($bodyDecoded['object'])
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&& isset($bodyDecoded['object']['attributedTo'])
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) {
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if(parse_url($bodyDecoded['object']['attributedTo'], PHP_URL_HOST) !== $keyDomain) {
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return;
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}
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}
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if(!$keyDomain || !$idDomain || $keyDomain !== $idDomain) {
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return;
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}
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$actor = Profile::whereKeyId($keyId)->first();
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if(!$actor) {
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$actorUrl = is_array($bodyDecoded['actor']) ? $bodyDecoded['actor'][0] : $bodyDecoded['actor'];
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$actor = Helpers::profileFirstOrNew($actorUrl);
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}
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if(!$actor) {
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return;
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}
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$pkey = openssl_pkey_get_public($actor->public_key);
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if(!$pkey) {
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return 0;
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}
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$inboxPath = "/f/inbox";
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list($verified, $headers) = HttpSignature::verify($pkey, $signatureData, $headers, $inboxPath, $body);
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if($verified == 1) {
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return true;
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} else {
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return false;
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}
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}
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protected function blindKeyRotation($headers, $payload)
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{
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$signature = is_array($headers['signature']) ? $headers['signature'][0] : $headers['signature'];
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$date = is_array($headers['date']) ? $headers['date'][0] : $headers['date'];
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if(!$signature) {
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return;
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}
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if(!$date) {
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return;
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}
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if(!now()->parse($date)->gt(now()->subDays(1)) ||
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!now()->parse($date)->lt(now()->addDays(1))
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) {
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return;
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}
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$signatureData = HttpSignature::parseSignatureHeader($signature);
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$keyId = Helpers::validateUrl($signatureData['keyId']);
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$actor = Profile::whereKeyId($keyId)->whereNotNull('remote_url')->first();
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if(!$actor) {
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return;
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}
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if(Helpers::validateUrl($actor->remote_url) == false) {
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return;
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}
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$res = Zttp::timeout(5)->withHeaders([
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'Accept' => 'application/ld+json; profile="https://www.w3.org/ns/activitystreams"',
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'User-Agent' => 'PixelfedBot v0.1 - https://pixelfed.org',
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])->get($actor->remote_url);
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$res = json_decode($res->body(), true, 8);
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if($res['publicKey']['id'] !== $actor->key_id) {
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return;
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}
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$actor->public_key = $res['publicKey']['publicKeyPem'];
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$actor->save();
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return $this->verifySignature($headers, $payload);
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}
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}
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