/* 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 . */ package federatingdb import ( "context" "encoding/json" "errors" "fmt" "github.com/go-fed/activity/streams" "github.com/go-fed/activity/streams/vocab" "github.com/sirupsen/logrus" "github.com/superseriousbusiness/gotosocial/internal/db" "github.com/superseriousbusiness/gotosocial/internal/gtsmodel" "github.com/superseriousbusiness/gotosocial/internal/util" ) func (f *federatingDB) Accept(ctx context.Context, accept vocab.ActivityStreamsAccept) error { l := f.log.WithFields( logrus.Fields{ "func": "Accept", "asType": accept.GetTypeName(), }, ) m, err := streams.Serialize(accept) if err != nil { return err } b, err := json.Marshal(m) if err != nil { return err } l.Debugf("received ACCEPT asType %s", string(b)) targetAcctI := ctx.Value(util.APAccount) if targetAcctI == nil { // If the target account wasn't set on the context, that means this request didn't pass through the // API, but came from inside GtS as the result of another activity on this instance. That being so, // we can safely just ignore this activity, since we know we've already processed it elsewhere. return nil } targetAcct, ok := targetAcctI.(*gtsmodel.Account) if !ok { l.Error("ACCEPT: target account was set on context but couldn't be parsed") return nil } fromFederatorChanI := ctx.Value(util.APFromFederatorChanKey) if fromFederatorChanI == nil { l.Error("ACCEPT: from federator channel wasn't set on context") return nil } fromFederatorChan, ok := fromFederatorChanI.(chan gtsmodel.FromFederator) if !ok { l.Error("ACCEPT: from federator channel was set on context but couldn't be parsed") return nil } acceptObject := accept.GetActivityStreamsObject() if acceptObject == nil { return errors.New("ACCEPT: no object set on vocab.ActivityStreamsAccept") } for iter := acceptObject.Begin(); iter != acceptObject.End(); iter = iter.Next() { // check if the object is an IRI if iter.IsIRI() { // we have just the URI of whatever is being accepted, so we need to find out what it is acceptedObjectIRI := iter.GetIRI() if util.IsFollowPath(acceptedObjectIRI) { // ACCEPT FOLLOW gtsFollowRequest := >smodel.FollowRequest{} if err := f.db.GetWhere([]db.Where{{Key: "uri", Value: acceptedObjectIRI.String()}}, gtsFollowRequest); err != nil { return fmt.Errorf("ACCEPT: couldn't get follow request with id %s from the database: %s", acceptedObjectIRI.String(), err) } // make sure the addressee of the original follow is the same as whatever inbox this landed in if gtsFollowRequest.AccountID != targetAcct.ID { return errors.New("ACCEPT: follow object account and inbox account were not the same") } follow, err := f.db.AcceptFollowRequest(gtsFollowRequest.AccountID, gtsFollowRequest.TargetAccountID) if err != nil { return err } fromFederatorChan <- gtsmodel.FromFederator{ APObjectType: gtsmodel.ActivityStreamsFollow, APActivityType: gtsmodel.ActivityStreamsAccept, GTSModel: follow, ReceivingAccount: targetAcct, } return nil } } // check if iter is an AP object / type if iter.GetType() == nil { continue } switch iter.GetType().GetTypeName() { // we have the whole object so we can figure out what we're accepting case string(gtsmodel.ActivityStreamsFollow): // ACCEPT FOLLOW asFollow, ok := iter.GetType().(vocab.ActivityStreamsFollow) if !ok { return errors.New("ACCEPT: couldn't parse follow into vocab.ActivityStreamsFollow") } // convert the follow to something we can understand gtsFollow, err := f.typeConverter.ASFollowToFollow(asFollow) if err != nil { return fmt.Errorf("ACCEPT: error converting asfollow to gtsfollow: %s", err) } // make sure the addressee of the original follow is the same as whatever inbox this landed in if gtsFollow.AccountID != targetAcct.ID { return errors.New("ACCEPT: follow object account and inbox account were not the same") } follow, err := f.db.AcceptFollowRequest(gtsFollow.AccountID, gtsFollow.TargetAccountID) if err != nil { return err } fromFederatorChan <- gtsmodel.FromFederator{ APObjectType: gtsmodel.ActivityStreamsFollow, APActivityType: gtsmodel.ActivityStreamsAccept, GTSModel: follow, ReceivingAccount: targetAcct, } return nil } } return nil }