93 lines
2.8 KiB
Go
93 lines
2.8 KiB
Go
package federatingdb
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import (
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"context"
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"encoding/json"
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"errors"
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"fmt"
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"github.com/go-fed/activity/streams"
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"github.com/go-fed/activity/streams/vocab"
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"github.com/sirupsen/logrus"
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"github.com/superseriousbusiness/gotosocial/internal/db"
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"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
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"github.com/superseriousbusiness/gotosocial/internal/util"
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)
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func (f *federatingDB) Undo(ctx context.Context, undo vocab.ActivityStreamsUndo) error {
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l := f.log.WithFields(
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logrus.Fields{
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"func": "Undo",
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"asType": undo.GetTypeName(),
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},
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)
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m, err := streams.Serialize(undo)
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if err != nil {
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return err
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}
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b, err := json.Marshal(m)
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if err != nil {
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return err
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}
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l.Debugf("received UNDO asType %s", string(b))
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targetAcctI := ctx.Value(util.APAccount)
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if targetAcctI == nil {
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l.Error("UNDO: target account wasn't set on context")
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return nil
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}
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targetAcct, ok := targetAcctI.(*gtsmodel.Account)
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if !ok {
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l.Error("UNDO: target account was set on context but couldn't be parsed")
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return nil
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}
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undoObject := undo.GetActivityStreamsObject()
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if undoObject == nil {
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return errors.New("UNDO: no object set on vocab.ActivityStreamsUndo")
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}
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for iter := undoObject.Begin(); iter != undoObject.End(); iter = iter.Next() {
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if iter.GetType() == nil {
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continue
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}
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switch iter.GetType().GetTypeName() {
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case string(gtsmodel.ActivityStreamsFollow):
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// UNDO FOLLOW
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ASFollow, ok := iter.GetType().(vocab.ActivityStreamsFollow)
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if !ok {
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return errors.New("UNDO: couldn't parse follow into vocab.ActivityStreamsFollow")
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}
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// make sure the actor owns the follow
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if !sameActor(undo.GetActivityStreamsActor(), ASFollow.GetActivityStreamsActor()) {
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return errors.New("UNDO: follow actor and activity actor not the same")
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}
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// convert the follow to something we can understand
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gtsFollow, err := f.typeConverter.ASFollowToFollow(ASFollow)
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if err != nil {
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return fmt.Errorf("UNDO: error converting asfollow to gtsfollow: %s", err)
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}
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// make sure the addressee of the original follow is the same as whatever inbox this landed in
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if gtsFollow.TargetAccountID != targetAcct.ID {
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return errors.New("UNDO: follow object account and inbox account were not the same")
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}
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// delete any existing FOLLOW
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if err := f.db.DeleteWhere([]db.Where{{Key: "uri", Value: gtsFollow.URI}}, >smodel.Follow{}); err != nil {
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return fmt.Errorf("UNDO: db error removing follow: %s", err)
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}
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// delete any existing FOLLOW REQUEST
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if err := f.db.DeleteWhere([]db.Where{{Key: "uri", Value: gtsFollow.URI}}, >smodel.FollowRequest{}); err != nil {
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return fmt.Errorf("UNDO: db error removing follow request: %s", err)
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}
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l.Debug("follow undone")
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return nil
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case string(gtsmodel.ActivityStreamsLike):
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// UNDO LIKE
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case string(gtsmodel.ActivityStreamsAnnounce):
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// UNDO BOOST/REBLOG/ANNOUNCE
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}
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}
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return nil
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}
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