gotosocial/internal/federation/dereferencing/collectionpage.go
Tobi Smethurst 0f2de6394a
Dereference remote replies (#132)
* decided where to put reply dereferencing

* fiddling with dereferencing threads

* further adventures

* tidy up some stuff

* move dereferencing functionality

* a bunch of refactoring

* go fmt

* more refactoring

* bleep bloop

* docs and linting

* start implementing replies collection on gts side

* fiddling around

* allow dereferencing our replies

* lint, fmt
2021-08-10 13:32:39 +02:00

71 lines
2.5 KiB
Go

/*
GoToSocial
Copyright (C) 2021 GoToSocial Authors admin@gotosocial.org
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package dereferencing
import (
"context"
"encoding/json"
"errors"
"fmt"
"net/url"
"github.com/go-fed/activity/streams"
"github.com/go-fed/activity/streams/vocab"
"github.com/superseriousbusiness/gotosocial/internal/ap"
"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
)
// DereferenceCollectionPage returns the activitystreams CollectionPage at the specified IRI, or an error if something goes wrong.
func (d *deref) DereferenceCollectionPage(username string, pageIRI *url.URL) (ap.CollectionPageable, error) {
if blocked, err := d.blockedDomain(pageIRI.Host); blocked || err != nil {
return nil, fmt.Errorf("DereferenceCollectionPage: domain %s is blocked", pageIRI.Host)
}
transport, err := d.transportController.NewTransportForUsername(username)
if err != nil {
return nil, fmt.Errorf("DereferenceCollectionPage: error creating transport: %s", err)
}
b, err := transport.Dereference(context.Background(), pageIRI)
if err != nil {
return nil, fmt.Errorf("DereferenceCollectionPage: error deferencing %s: %s", pageIRI.String(), err)
}
m := make(map[string]interface{})
if err := json.Unmarshal(b, &m); err != nil {
return nil, fmt.Errorf("DereferenceCollectionPage: error unmarshalling bytes into json: %s", err)
}
t, err := streams.ToType(context.Background(), m)
if err != nil {
return nil, fmt.Errorf("DereferenceCollectionPage: error resolving json into ap vocab type: %s", err)
}
if t.GetTypeName() != gtsmodel.ActivityStreamsCollectionPage {
return nil, fmt.Errorf("DereferenceCollectionPage: type name %s not supported", t.GetTypeName())
}
p, ok := t.(vocab.ActivityStreamsCollectionPage)
if !ok {
return nil, errors.New("DereferenceCollectionPage: error resolving type as activitystreams collection page")
}
return p, nil
}