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Add shared inbox

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Daniel Supernault 2020-11-26 00:39:01 -07:00
parent 0904a9d02f
commit 4733ca9fb9
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8 changed files with 231 additions and 90 deletions
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11
app/Http/Controllers/FederationController.php
View file

@ -108,6 +108,17 @@ class FederationController extends Controller
return;
}
public function sharedInbox(Request $request)
{
abort_if(!config('federation.activitypub.enabled'), 404);
abort_if(!config('federation.activitypub.sharedInbox'), 404);
$headers = $request->headers->all();
$payload = $request->getContent();
dispatch(new InboxWorker($headers, $payload))->onQueue('high');
return;
}
public function userFollowing(Request $request, $username)
{
abort_if(!config('federation.activitypub.enabled'), 404);

115
app/Jobs/InboxPipeline/InboxWorker.php
View file

@ -26,10 +26,9 @@ class InboxWorker implements ShouldQueue
*
* @return void
*/
public function __construct($headers, $profile, $payload)
public function __construct($headers, $payload)
{
$this->headers = $headers;
$this->profile = $profile;
$this->payload = $payload;
}
@ -40,6 +39,116 @@ class InboxWorker implements ShouldQueue
*/
public function handle()
{
(new Inbox($this->headers, $this->profile, $this->payload))->handle();
$profile = null;
$headers = $this->headers;
$payload = json_decode($this->payload, true, 8);
if(!isset($headers['signature']) || !isset($headers['date'])) {
return;
}
if(empty($headers) || empty($payload)) {
return;
}
if($this->verifySignature($headers, $payload) == true) {
(new Inbox($headers, $profile, $payload))->handle();
return;
} else if($this->blindKeyRotation($headers, $payload) == true) {
(new Inbox($headers, $profile, $payload))->handle();
return;
} else {
return;
}
}
protected function verifySignature($headers, $payload)
{
$body = $this->payload;
$bodyDecoded = $payload;
$signature = is_array($headers['signature']) ? $headers['signature'][0] : $headers['signature'];
$date = is_array($headers['date']) ? $headers['date'][0] : $headers['date'];
if(!$signature) {
return;
}
if(!$date) {
return;
}
if(!now()->parse($date)->gt(now()->subDays(1)) ||
!now()->parse($date)->lt(now()->addDays(1))
) {
return;
}
$signatureData = HttpSignature::parseSignatureHeader($signature);
$keyId = Helpers::validateUrl($signatureData['keyId']);
$id = Helpers::validateUrl($bodyDecoded['id']);
$keyDomain = parse_url($keyId, PHP_URL_HOST);
$idDomain = parse_url($id, PHP_URL_HOST);
if(isset($bodyDecoded['object'])
&& is_array($bodyDecoded['object'])
&& isset($bodyDecoded['object']['attributedTo'])
) {
if(parse_url($bodyDecoded['object']['attributedTo'], PHP_URL_HOST) !== $keyDomain) {
return;
abort(400, 'Invalid request');
}
}
if(!$keyDomain || !$idDomain || $keyDomain !== $idDomain) {
return;
abort(400, 'Invalid request');
}
$actor = Profile::whereKeyId($keyId)->first();
if(!$actor) {
$actorUrl = is_array($bodyDecoded['actor']) ? $bodyDecoded['actor'][0] : $bodyDecoded['actor'];
$actor = Helpers::profileFirstOrNew($actorUrl);
}
if(!$actor) {
return;
}
$pkey = openssl_pkey_get_public($actor->public_key);
$inboxPath = "/f/inbox";
list($verified, $headers) = HttpSignature::verify($pkey, $signatureData, $headers, $inboxPath, $body);
if($verified == 1) {
return true;
} else {
return false;
}
}
protected function blindKeyRotation($headers, $payload)
{
$signature = is_array($headers['signature']) ? $headers['signature'][0] : $headers['signature'];
$date = is_array($headers['date']) ? $headers['date'][0] : $headers['date'];
if(!$signature) {
return;
}
if(!$date) {
return;
}
if(!now()->parse($date)->gt(now()->subDays(1)) ||
!now()->parse($date)->lt(now()->addDays(1))
) {
return;
}
$signatureData = HttpSignature::parseSignatureHeader($signature);
$keyId = Helpers::validateUrl($signatureData['keyId']);
$actor = Profile::whereKeyId($keyId)->whereNotNull('remote_url')->first();
if(!$actor) {
return;
}
if(Helpers::validateUrl($actor->remote_url) == false) {
return;
}
$res = Zttp::timeout(5)->withHeaders([
'Accept' => 'application/ld+json; profile="https://www.w3.org/ns/activitystreams"',
'User-Agent' => 'PixelfedBot v0.1 - https://pixelfed.org',
])->get($actor->remote_url);
$res = json_decode($res->body(), true, 8);
if($res['publicKey']['id'] !== $actor->key_id) {
return;
}
$actor->public_key = $res['publicKey']['publicKeyPem'];
$actor->save();
return $this->verifySignature($headers, $payload);
}
}

3
app/Transformer/ActivityPub/ProfileTransformer.php
View file

@ -44,6 +44,9 @@ class ProfileTransformer extends Fractal\TransformerAbstract
'mediaType' => 'image/jpeg',
'url' => $profile->avatarUrl(),
],
'endpoints' => [
'sharedInbox' => config('app.url') . '/f/inbox'
]
];
}
}

25
app/Util/ActivityPub/Helpers.php
View file

@ -136,6 +136,11 @@ class Helpers {
$url = $url[0];
}
$hash = hash('sha256', $url);
$key = "helpers:url:valid:sha256-{$hash}";
$ttl = now()->addMinutes(5);
$valid = Cache::remember($key, $ttl, function() use($url) {
$localhosts = [
'127.0.0.1', 'localhost', '::1'
];
@ -169,7 +174,10 @@ class Helpers {
return false;
}
return $valid;
return true;
});
return (bool) $valid;
}
public static function validateLocalUrl($url)
@ -194,19 +202,25 @@ class Helpers {
];
}
public static function fetchFromUrl($url)
public static function fetchFromUrl($url = false)
{
$url = self::validateUrl($url);
if($url == false) {
if(self::validateUrl($url) == false) {
return;
}
$res = Zttp::withHeaders(self::zttpUserAgent())->get($url);
$hash = hash('sha256', $url);
$key = "helpers:url:fetcher:sha256-{$hash}";
$ttl = now()->addMinutes(5);
return Cache::remember($key, $ttl, function() use($url) {
$res = Zttp::withoutVerifying()->withHeaders(self::zttpUserAgent())->get($url);
$res = json_decode($res->body(), true, 8);
if(json_last_error() == JSON_ERROR_NONE) {
return $res;
} else {
return false;
}
});
}
public static function fetchProfileFromUrl($url)
@ -444,6 +458,7 @@ class Helpers {
$profile->name = isset($res['name']) ? Purify::clean($res['name']) : 'user';
$profile->bio = isset($res['summary']) ? Purify::clean($res['summary']) : null;
$profile->last_fetched_at = now();
$profile->sharedInbox = isset($res['endpoints']) && isset($res['endpoints']['sharedInbox']) && Helpers::validateUrl($res['endpoints']['sharedInbox']) ? $res['endpoints']['sharedInbox'] : null;
$profile->save();
}
}

5
app/Util/ActivityPub/Inbox.php
View file

@ -323,7 +323,7 @@ class Inbox
public function handleFollowActivity()
{
$actor = $this->actorFirstOrCreate($this->payload['actor']);
$target = $this->profile;
$target = $this->actorFirstOrCreate($this->payload['object']);
if(!$actor || $actor->domain == null || $target->domain !== null) {
return;
}
@ -470,7 +470,7 @@ class Inbox
$profile->statuses()->delete();
$profile->delete();
return;
}
} else {
$type = $this->payload['object']['type'];
$typeCheck = in_array($type, ['Person', 'Tombstone']);
if(!Helpers::validateUrl($actor) || !Helpers::validateUrl($obj['id']) || !$typeCheck) {
@ -521,6 +521,7 @@ class Inbox
break;
}
}
}
public function handleLikeActivity()
{

1
app/Util/Lexer/RestrictedNames.php
View file

@ -177,6 +177,7 @@ class RestrictedNames
'help-center_',
'help_center-',
'i',
'inbox',
'img',
'imgs',
'image',

2
config/federation.php
View file

@ -20,7 +20,7 @@ return [
'remoteFollow' => env('AP_REMOTE_FOLLOW', false),
'delivery' => [
'timeout' => env('ACTIVITYPUB_DELIVERY_TIMEOUT', 2.0),
'timeout' => env('ACTIVITYPUB_DELIVERY_TIMEOUT', 30.0),
'concurrency' => env('ACTIVITYPUB_DELIVERY_CONCURRENCY', 10),
'logger' => [
'enabled' => env('AP_LOGGER_ENABLED', false),

1
routes/api.php
View file

@ -4,6 +4,7 @@ use Illuminate\Http\Request;
$middleware = ['auth:api','twofactor','validemail','localization', 'throttle:60,1'];
Route::post('/f/inbox', 'FederationController@sharedInbox');
Route::post('/users/{username}/inbox', 'FederationController@userInbox');
Route::group(['prefix' => 'api'], function() use($middleware) {