incoming UNDO for follows now working

PROGRESS.md

@@ -30,7 +30,7 @@
     * [ ] /api/v1/accounts/:id/pin POST                     (Feature this account on profile)
     * [ ] /api/v1/accounts/:id/unpin POST                   (Remove this account from profile)
     * [ ] /api/v1/accounts/:id/note POST                    (Make a personal note about this account)
-    * [ ] /api/v1/accounts/relationships GET                (Check relationships with accounts)
+    * [x] /api/v1/accounts/relationships GET                (Check relationships with accounts)
     * [ ] /api/v1/accounts/search GET                       (Search for an account)
   * [ ] Bookmarks
     * [ ] /api/v1/bookmarks GET                             (See bookmarked statuses)
@@ -177,6 +177,7 @@
     * [ ] 'Greedy' federation
     * [ ] No federation (insulate this instance from the Fediverse)
       * [ ] Allowlist
+  * [x] Secure HTTP signatures (creation and validation)
 * [ ] Storage
   * [x] Internal/statuses/preferences etc
     * [x] Postgres interface

internal/db/db.go

@@ -22,7 +22,6 @@ import (
 	"context"
 	"net"
 
-	"github.com/go-fed/activity/pub"
 	"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
 )
 
@@ -44,7 +43,7 @@ func (e ErrNoEntries) Error() string {
 type DB interface {
 	// Federation returns an interface that's compatible with go-fed, for performing federation storage/retrieval functions.
 	// See: https://pkg.go.dev/github.com/go-fed/activity@v1.0.0/pub?utm_source=gopls#Database
-	Federation() pub.Database
+	// Federation() federatingdb.FederatingDB
 
 	/*
 		BASIC DB FUNCTIONALITY

internal/db/pg/pg.go

@@ -30,7 +30,6 @@ import (
 	"strings"
 	"time"
 
-	"github.com/go-fed/activity/pub"
 	"github.com/go-pg/pg/extra/pgdebug"
 	"github.com/go-pg/pg/v10"
 	"github.com/go-pg/pg/v10/orm"
@@ -38,7 +37,6 @@ import (
 	"github.com/sirupsen/logrus"
 	"github.com/superseriousbusiness/gotosocial/internal/config"
 	"github.com/superseriousbusiness/gotosocial/internal/db"
-	"github.com/superseriousbusiness/gotosocial/internal/federation"
 	"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
 	"github.com/superseriousbusiness/gotosocial/internal/util"
 	"golang.org/x/crypto/bcrypt"
@@ -50,7 +48,7 @@ type postgresService struct {
 	conn   *pg.DB
 	log    *logrus.Logger
 	cancel context.CancelFunc
-	federationDB pub.Database
+	// federationDB pub.Database
 }
 
 // NewPostgresService returns a postgresService derived from the provided config, which implements the go-fed DB interface.
@@ -97,9 +95,6 @@ func NewPostgresService(ctx context.Context, c *config.Config, log *logrus.Logge
 		cancel: cancel,
 	}
 
-	federatingDB := federation.NewFederatingDB(ps, c, log)
-	ps.federationDB = federatingDB
-
 	// we can confidently return this useable postgres service now
 	return ps, nil
 }
@@ -159,14 +154,6 @@ func derivePGOptions(c *config.Config) (*pg.Options, error) {
 	return options, nil
 }
 
-/*
-	FEDERATION FUNCTIONALITY
-*/
-
-func (ps *postgresService) Federation() pub.Database {
-	return ps.federationDB
-}
-
 /*
 	BASIC DB FUNCTIONALITY
 */
@@ -285,21 +272,23 @@ func (ps *postgresService) UpdateOneByID(id string, key string, value interface{
 
 func (ps *postgresService) DeleteByID(id string, i interface{}) error {
 	if _, err := ps.conn.Model(i).Where("id = ?", id).Delete(); err != nil {
-		if err == pg.ErrNoRows {
+		// if there are no rows *anyway* then that's fine
-			return db.ErrNoEntries{}
+		// just return err if there's an actual error
-		}
+		if err != pg.ErrNoRows {
 			return err
 		}
+	}
 	return nil
 }
 
 func (ps *postgresService) DeleteWhere(key string, value interface{}, i interface{}) error {
 	if _, err := ps.conn.Model(i).Where("? = ?", pg.Safe(key), value).Delete(); err != nil {
-		if err == pg.ErrNoRows {
+		// if there are no rows *anyway* then that's fine
-			return db.ErrNoEntries{}
+		// just return err if there's an actual error
-		}
+		if err != pg.ErrNoRows {
 			return err
 		}
+	}
 	return nil
 }
 

internal/federation/federating_db.go

@@ -38,6 +38,11 @@ import (
 	"github.com/superseriousbusiness/gotosocial/internal/util"
 )
 
+type FederatingDB interface {
+	pub.Database
+	Undo(c context.Context, asType vocab.Type) error
+}
+
 // FederatingDB uses the underlying DB interface to implement the go-fed pub.Database interface.
 // It doesn't care what the underlying implementation of the DB interface is, as long as it works.
 type federatingDB struct {
@@ -48,8 +53,8 @@ type federatingDB struct {
 	typeConverter typeutils.TypeConverter
 }
 
-// NewFederatingDB returns a pub.Database interface using the given database, config, and logger.
+// NewFederatingDB returns a FederatingDB interface using the given database, config, and logger.
-func NewFederatingDB(db db.DB, config *config.Config, log *logrus.Logger) pub.Database {
+func NewFederatingDB(db db.DB, config *config.Config, log *logrus.Logger) FederatingDB {
 	return &federatingDB{
 		locks:         new(sync.Map),
 		db:            db,
@@ -405,7 +410,7 @@ func (f *federatingDB) Create(ctx context.Context, asType vocab.Type) error {
 		return nil
 	}
 
-	switch gtsmodel.ActivityStreamsActivity(asType.GetTypeName()) {
+	switch asType.GetTypeName() {
 	case gtsmodel.ActivityStreamsCreate:
 		create, ok := asType.(vocab.ActivityStreamsCreate)
 		if !ok {
@@ -413,7 +418,7 @@ func (f *federatingDB) Create(ctx context.Context, asType vocab.Type) error {
 		}
 		object := create.GetActivityStreamsObject()
 		for objectIter := object.Begin(); objectIter != object.End(); objectIter = objectIter.Next() {
-			switch gtsmodel.ActivityStreamsObject(objectIter.GetType().GetTypeName()) {
+			switch objectIter.GetType().GetTypeName() {
 			case gtsmodel.ActivityStreamsNote:
 				note := objectIter.GetActivityStreamsNote()
 				status, err := f.typeConverter.ASStatusToStatus(note)
@@ -428,6 +433,7 @@ func (f *federatingDB) Create(ctx context.Context, asType vocab.Type) error {
 					APObjectType:     gtsmodel.ActivityStreamsNote,
 					APActivityType:   gtsmodel.ActivityStreamsCreate,
 					GTSModel:         status,
+					ReceivingAccount: targetAcct,
 				}
 			}
 		}
@@ -455,6 +461,98 @@ func (f *federatingDB) Create(ctx context.Context, asType vocab.Type) error {
 	return nil
 }
 
+func (f *federatingDB) Undo(ctx context.Context, asType vocab.Type) error {
+	l := f.log.WithFields(
+		logrus.Fields{
+			"func":   "Undo",
+			"asType": asType.GetTypeName(),
+		},
+	)
+	m, err := streams.Serialize(asType)
+	if err != nil {
+		return err
+	}
+	b, err := json.Marshal(m)
+	if err != nil {
+		return err
+	}
+	l.Debugf("received UNDO asType %s", string(b))
+
+	targetAcctI := ctx.Value(util.APAccount)
+	if targetAcctI == nil {
+		l.Error("UNDO: target account wasn't set on context")
+		return nil
+	}
+	targetAcct, ok := targetAcctI.(*gtsmodel.Account)
+	if !ok {
+		l.Error("UNDO: target account was set on context but couldn't be parsed")
+		return nil
+	}
+
+	// fromFederatorChanI := ctx.Value(util.APFromFederatorChanKey)
+	// if fromFederatorChanI == nil {
+	// 	l.Error("from federator channel wasn't set on context")
+	// 	return nil
+	// }
+	// fromFederatorChan, ok := fromFederatorChanI.(chan gtsmodel.FromFederator)
+	// if !ok {
+	// 	l.Error("from federator channel was set on context but couldn't be parsed")
+	// 	return nil
+	// }
+
+	switch asType.GetTypeName() {
+	// UNDO
+	case gtsmodel.ActivityStreamsUndo:
+		undo, ok := asType.(vocab.ActivityStreamsUndo)
+		if !ok {
+			return errors.New("UNDO: couldn't parse UNDO into vocab.ActivityStreamsUndo")
+		}
+		undoObject := undo.GetActivityStreamsObject()
+		if undoObject == nil {
+			return errors.New("UNDO: no object set on vocab.ActivityStreamsUndo")
+		}
+
+		for iter := undoObject.Begin(); iter != undoObject.End(); iter = iter.Next() {
+			switch iter.GetType().GetTypeName() {
+			case string(gtsmodel.ActivityStreamsFollow):
+				// UNDO FOLLOW
+				ASFollow, ok := iter.GetType().(vocab.ActivityStreamsFollow)
+				if !ok {
+					return errors.New("UNDO: couldn't parse follow into vocab.ActivityStreamsFollow")
+				}
+				// make sure the actor owns the follow
+				if !sameActor(undo.GetActivityStreamsActor(), ASFollow.GetActivityStreamsActor()) {
+					return errors.New("UNDO: follow actor and activity actor not the same")
+				}
+				// convert the follow to something we can understand
+				gtsFollow, err := f.typeConverter.ASFollowToFollow(ASFollow)
+				if err != nil {
+					return fmt.Errorf("UNDO: 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.TargetAccountID != targetAcct.ID {
+					return errors.New("UNDO: follow object account and inbox account were not the same")
+				}
+				// delete any existing FOLLOW
+				if err := f.db.DeleteWhere("uri", gtsFollow.URI, &gtsmodel.Follow{}); err != nil {
+					return fmt.Errorf("UNDO: db error removing follow: %s", err)
+				}
+				// delete any existing FOLLOW REQUEST
+				if err := f.db.DeleteWhere("uri", gtsFollow.URI, &gtsmodel.FollowRequest{}); err != nil {
+					return fmt.Errorf("UNDO: db error removing follow request: %s", err)
+				}
+				l.Debug("follow undone")
+				return nil
+			case string(gtsmodel.ActivityStreamsLike):
+				// UNDO LIKE
+			case string(gtsmodel.ActivityStreamsAnnounce):
+				// UNDO BOOST/REBLOG/ANNOUNCE
+			}
+		}
+	}
+	return nil
+}
+
 // Update sets an existing entry to the database based on the value's
 // id.
 //
@@ -500,7 +598,7 @@ func (f *federatingDB) Update(ctx context.Context, asType vocab.Type) error {
 		l.Error("from federator channel was set on context but couldn't be parsed")
 	}
 
-	switch gtsmodel.ActivityStreamsActivity(asType.GetTypeName()) {
+	switch asType.GetTypeName() {
 	case gtsmodel.ActivityStreamsUpdate:
 		update, ok := asType.(vocab.ActivityStreamsCreate)
 		if !ok {

internal/federation/federatingprotocol.go

@@ -20,14 +20,12 @@ package federation
 
 import (
 	"context"
-	"encoding/json"
 	"errors"
 	"fmt"
 	"net/http"
 	"net/url"
 
 	"github.com/go-fed/activity/pub"
-	"github.com/go-fed/activity/streams"
 	"github.com/go-fed/activity/streams/vocab"
 	"github.com/sirupsen/logrus"
 	"github.com/superseriousbusiness/gotosocial/internal/db"
@@ -271,7 +269,7 @@ func (f *federator) FederatingCallbacks(ctx context.Context) (wrapped pub.Federa
 	// override default undo behavior
 	other = []interface{}{
 		func(ctx context.Context, undo vocab.ActivityStreamsUndo) error {
-			return f.typeConverter.
+			return f.FederatingDB().Undo(ctx, undo)
 		},
 	}
 

internal/federation/federator.go

@@ -52,6 +52,7 @@ type Federator interface {
 type federator struct {
 	config              *config.Config
 	db                  db.DB
+	federatingDB        FederatingDB
 	clock               pub.Clock
 	typeConverter       typeutils.TypeConverter
 	transportController transport.Controller
@@ -60,18 +61,19 @@ type federator struct {
 }
 
 // NewFederator returns a new federator
-func NewFederator(db db.DB, transportController transport.Controller, config *config.Config, log *logrus.Logger, typeConverter typeutils.TypeConverter) Federator {
+func NewFederator(db db.DB, federatingDB FederatingDB, transportController transport.Controller, config *config.Config, log *logrus.Logger, typeConverter typeutils.TypeConverter) Federator {
 
 	clock := &Clock{}
 	f := &federator{
 		config:              config,
 		db:                  db,
+		federatingDB:        federatingDB,
 		clock:               &Clock{},
 		typeConverter:       typeConverter,
 		transportController: transportController,
 		log:                 log,
 	}
-	actor := newFederatingActor(f, f, db.Federation(), clock)
+	actor := newFederatingActor(f, f, federatingDB, clock)
 	f.actor = actor
 	return f
 }
@@ -79,3 +81,7 @@ func NewFederator(db db.DB, transportController transport.Controller, config *co
 func (f *federator) FederatingActor() pub.FederatingActor {
 	return f.actor
 }
+
+func (f *federator) FederatingDB() FederatingDB {
+	return f.federatingDB
+}

internal/federation/federator_test.go

@@ -89,7 +89,7 @@ func (suite *ProtocolTestSuite) TestPostInboxRequestBodyHook() {
 		return nil, nil
 	}))
 	// setup module being tested
-	federator := federation.NewFederator(suite.db, tc, suite.config, suite.log, suite.typeConverter)
+	federator := federation.NewFederator(suite.db, testrig.NewTestFederatingDB(suite.db), tc, suite.config, suite.log, suite.typeConverter)
 
 	// setup request
 	ctx := context.Background()
@@ -155,7 +155,7 @@ func (suite *ProtocolTestSuite) TestAuthenticatePostInbox() {
 	}))
 
 	// now setup module being tested, with the mock transport controller
-	federator := federation.NewFederator(suite.db, tc, suite.config, suite.log, suite.typeConverter)
+	federator := federation.NewFederator(suite.db, testrig.NewTestFederatingDB(suite.db), tc, suite.config, suite.log, suite.typeConverter)
 
 	// setup request
 	ctx := context.Background()

internal/federation/util.go

@@ -243,3 +243,23 @@ func (f *federator) GetTransportForUser(username string) (transport.Transport, e
 	}
 	return transport, nil
 }
+
+func sameActor(activityActor vocab.ActivityStreamsActorProperty, followActor vocab.ActivityStreamsActorProperty) bool {
+	if activityActor == nil || followActor == nil {
+		return false
+	}
+	for aIter := activityActor.Begin(); aIter != activityActor.End(); aIter = aIter.Next() {
+		for fIter := followActor.Begin(); fIter != followActor.End(); fIter = fIter.Next() {
+			if aIter.GetIRI() == nil {
+				return false
+			}
+			if fIter.GetIRI() == nil {
+				return false
+			}
+			if aIter.GetIRI().String() == fIter.GetIRI().String() {
+				return true
+			}
+		}
+	}
+	return false
+}

internal/gotosocial/actions.go

@@ -83,6 +83,8 @@ var Run action.GTSAction = func(ctx context.Context, c *config.Config, log *logr
 		return fmt.Errorf("error creating dbservice: %s", err)
 	}
 
+	federatingDB := federation.NewFederatingDB(dbService, c, log)
+
 	router, err := router.New(c, log)
 	if err != nil {
 		return fmt.Errorf("error creating router: %s", err)
@@ -100,7 +102,7 @@ var Run action.GTSAction = func(ctx context.Context, c *config.Config, log *logr
 	mediaHandler := media.New(c, dbService, storageBackend, log)
 	oauthServer := oauth.New(dbService, log)
 	transportController := transport.NewController(c, &federation.Clock{}, http.DefaultClient, log)
-	federator := federation.NewFederator(dbService, transportController, c, log, typeConverter)
+	federator := federation.NewFederator(dbService, federatingDB, transportController, c, log, typeConverter)
 	processor := message.NewProcessor(c, typeConverter, federator, oauthServer, mediaHandler, storageBackend, dbService, log)
 	if err := processor.Start(); err != nil {
 		return fmt.Errorf("error starting processor: %s", err)

internal/gtsmodel/account.go

@@ -107,7 +107,7 @@ type Account struct {
 	// URL for getting the featured collection list of this account
 	FeaturedCollectionURI string `pg:",unique"`
 	// What type of activitypub actor is this account?
-	ActorType ActivityStreamsActor
+	ActorType string
 	// This account is associated with x account id
 	AlsoKnownAs string
 

internal/gtsmodel/activitystreams.go

@@ -18,110 +18,101 @@
 
 package gtsmodel
 
-// ActivityStreamsObject refers to https://www.w3.org/TR/activitystreams-vocabulary/#object-types
-type ActivityStreamsObject string
-
 const (
 	// ActivityStreamsArticle https://www.w3.org/TR/activitystreams-vocabulary/#dfn-article
-	ActivityStreamsArticle ActivityStreamsObject = "Article"
+	ActivityStreamsArticle = "Article"
 	// ActivityStreamsAudio https://www.w3.org/TR/activitystreams-vocabulary/#dfn-audio
-	ActivityStreamsAudio ActivityStreamsObject = "Audio"
+	ActivityStreamsAudio = "Audio"
 	// ActivityStreamsDocument https://www.w3.org/TR/activitystreams-vocabulary/#dfn-document
-	ActivityStreamsDocument ActivityStreamsObject = "Event"
+	ActivityStreamsDocument = "Event"
 	// ActivityStreamsEvent https://www.w3.org/TR/activitystreams-vocabulary/#dfn-event
-	ActivityStreamsEvent ActivityStreamsObject = "Event"
+	ActivityStreamsEvent = "Event"
 	// ActivityStreamsImage https://www.w3.org/TR/activitystreams-vocabulary/#dfn-image
-	ActivityStreamsImage ActivityStreamsObject = "Image"
+	ActivityStreamsImage = "Image"
 	// ActivityStreamsNote https://www.w3.org/TR/activitystreams-vocabulary/#dfn-note
-	ActivityStreamsNote ActivityStreamsObject = "Note"
+	ActivityStreamsNote = "Note"
 	// ActivityStreamsPage https://www.w3.org/TR/activitystreams-vocabulary/#dfn-page
-	ActivityStreamsPage ActivityStreamsObject = "Page"
+	ActivityStreamsPage = "Page"
 	// ActivityStreamsPlace https://www.w3.org/TR/activitystreams-vocabulary/#dfn-place
-	ActivityStreamsPlace ActivityStreamsObject = "Place"
+	ActivityStreamsPlace = "Place"
 	// ActivityStreamsProfile https://www.w3.org/TR/activitystreams-vocabulary/#dfn-profile
-	ActivityStreamsProfile ActivityStreamsObject = "Profile"
+	ActivityStreamsProfile = "Profile"
 	// ActivityStreamsRelationship https://www.w3.org/TR/activitystreams-vocabulary/#dfn-relationship
-	ActivityStreamsRelationship ActivityStreamsObject = "Relationship"
+	ActivityStreamsRelationship = "Relationship"
 	// ActivityStreamsTombstone https://www.w3.org/TR/activitystreams-vocabulary/#dfn-tombstone
-	ActivityStreamsTombstone ActivityStreamsObject = "Tombstone"
+	ActivityStreamsTombstone = "Tombstone"
 	// ActivityStreamsVideo https://www.w3.org/TR/activitystreams-vocabulary/#dfn-video
-	ActivityStreamsVideo ActivityStreamsObject = "Video"
+	ActivityStreamsVideo = "Video"
 )
 
-// ActivityStreamsActor refers to https://www.w3.org/TR/activitystreams-vocabulary/#actor-types
-type ActivityStreamsActor string
-
 const (
 	// ActivityStreamsApplication https://www.w3.org/TR/activitystreams-vocabulary/#dfn-application
-	ActivityStreamsApplication ActivityStreamsActor = "Application"
+	ActivityStreamsApplication = "Application"
 	// ActivityStreamsGroup https://www.w3.org/TR/activitystreams-vocabulary/#dfn-group
-	ActivityStreamsGroup ActivityStreamsActor = "Group"
+	ActivityStreamsGroup = "Group"
 	// ActivityStreamsOrganization https://www.w3.org/TR/activitystreams-vocabulary/#dfn-organization
-	ActivityStreamsOrganization ActivityStreamsActor = "Organization"
+	ActivityStreamsOrganization = "Organization"
 	// ActivityStreamsPerson https://www.w3.org/TR/activitystreams-vocabulary/#dfn-person
-	ActivityStreamsPerson ActivityStreamsActor = "Person"
+	ActivityStreamsPerson = "Person"
 	// ActivityStreamsService https://www.w3.org/TR/activitystreams-vocabulary/#dfn-service
-	ActivityStreamsService ActivityStreamsActor = "Service"
+	ActivityStreamsService = "Service"
 )
 
-// ActivityStreamsActivity refers to https://www.w3.org/TR/activitystreams-vocabulary/#activity-types
-type ActivityStreamsActivity string
-
 const (
 	// ActivityStreamsAccept https://www.w3.org/TR/activitystreams-vocabulary/#dfn-accept
-	ActivityStreamsAccept ActivityStreamsActivity = "Accept"
+	ActivityStreamsAccept = "Accept"
 	// ActivityStreamsAdd https://www.w3.org/TR/activitystreams-vocabulary/#dfn-add
-	ActivityStreamsAdd ActivityStreamsActivity = "Add"
+	ActivityStreamsAdd = "Add"
 	// ActivityStreamsAnnounce https://www.w3.org/TR/activitystreams-vocabulary/#dfn-announce
-	ActivityStreamsAnnounce ActivityStreamsActivity = "Announce"
+	ActivityStreamsAnnounce = "Announce"
 	// ActivityStreamsArrive https://www.w3.org/TR/activitystreams-vocabulary/#dfn-arrive
-	ActivityStreamsArrive ActivityStreamsActivity = "Arrive"
+	ActivityStreamsArrive = "Arrive"
 	// ActivityStreamsBlock https://www.w3.org/TR/activitystreams-vocabulary/#dfn-block
-	ActivityStreamsBlock ActivityStreamsActivity = "Block"
+	ActivityStreamsBlock = "Block"
 	// ActivityStreamsCreate https://www.w3.org/TR/activitystreams-vocabulary/#dfn-create
-	ActivityStreamsCreate ActivityStreamsActivity = "Create"
+	ActivityStreamsCreate = "Create"
 	// ActivityStreamsDelete https://www.w3.org/TR/activitystreams-vocabulary/#dfn-delete
-	ActivityStreamsDelete ActivityStreamsActivity = "Delete"
+	ActivityStreamsDelete = "Delete"
 	// ActivityStreamsDislike https://www.w3.org/TR/activitystreams-vocabulary/#dfn-dislike
-	ActivityStreamsDislike ActivityStreamsActivity = "Dislike"
+	ActivityStreamsDislike = "Dislike"
 	// ActivityStreamsFlag https://www.w3.org/TR/activitystreams-vocabulary/#dfn-flag
-	ActivityStreamsFlag ActivityStreamsActivity = "Flag"
+	ActivityStreamsFlag = "Flag"
 	// ActivityStreamsFollow https://www.w3.org/TR/activitystreams-vocabulary/#dfn-follow
-	ActivityStreamsFollow ActivityStreamsActivity = "Follow"
+	ActivityStreamsFollow = "Follow"
 	// ActivityStreamsIgnore https://www.w3.org/TR/activitystreams-vocabulary/#dfn-ignore
-	ActivityStreamsIgnore ActivityStreamsActivity = "Ignore"
+	ActivityStreamsIgnore = "Ignore"
 	// ActivityStreamsInvite https://www.w3.org/TR/activitystreams-vocabulary/#dfn-invite
-	ActivityStreamsInvite ActivityStreamsActivity = "Invite"
+	ActivityStreamsInvite = "Invite"
 	// ActivityStreamsJoin https://www.w3.org/TR/activitystreams-vocabulary/#dfn-join
-	ActivityStreamsJoin ActivityStreamsActivity = "Join"
+	ActivityStreamsJoin = "Join"
 	// ActivityStreamsLeave https://www.w3.org/TR/activitystreams-vocabulary/#dfn-leave
-	ActivityStreamsLeave ActivityStreamsActivity = "Leave"
+	ActivityStreamsLeave = "Leave"
 	// ActivityStreamsLike https://www.w3.org/TR/activitystreams-vocabulary/#dfn-like
-	ActivityStreamsLike ActivityStreamsActivity = "Like"
+	ActivityStreamsLike = "Like"
 	// ActivityStreamsListen https://www.w3.org/TR/activitystreams-vocabulary/#dfn-listen
-	ActivityStreamsListen ActivityStreamsActivity = "Listen"
+	ActivityStreamsListen = "Listen"
 	// ActivityStreamsMove https://www.w3.org/TR/activitystreams-vocabulary/#dfn-move
-	ActivityStreamsMove ActivityStreamsActivity = "Move"
+	ActivityStreamsMove = "Move"
 	// ActivityStreamsOffer https://www.w3.org/TR/activitystreams-vocabulary/#dfn-offer
-	ActivityStreamsOffer ActivityStreamsActivity = "Offer"
+	ActivityStreamsOffer = "Offer"
 	// ActivityStreamsQuestion https://www.w3.org/TR/activitystreams-vocabulary/#dfn-question
-	ActivityStreamsQuestion ActivityStreamsActivity = "Question"
+	ActivityStreamsQuestion = "Question"
 	// ActivityStreamsReject https://www.w3.org/TR/activitystreams-vocabulary/#dfn-reject
-	ActivityStreamsReject ActivityStreamsActivity = "Reject"
+	ActivityStreamsReject = "Reject"
 	// ActivityStreamsRead https://www.w3.org/TR/activitystreams-vocabulary/#dfn-read
-	ActivityStreamsRead ActivityStreamsActivity = "Read"
+	ActivityStreamsRead = "Read"
 	// ActivityStreamsRemove https://www.w3.org/TR/activitystreams-vocabulary/#dfn-remove
-	ActivityStreamsRemove ActivityStreamsActivity = "Remove"
+	ActivityStreamsRemove = "Remove"
 	// ActivityStreamsTentativeReject https://www.w3.org/TR/activitystreams-vocabulary/#dfn-tentativereject
-	ActivityStreamsTentativeReject ActivityStreamsActivity = "TentativeReject"
+	ActivityStreamsTentativeReject = "TentativeReject"
 	// ActivityStreamsTentativeAccept https://www.w3.org/TR/activitystreams-vocabulary/#dfn-tentativeaccept
-	ActivityStreamsTentativeAccept ActivityStreamsActivity = "TentativeAccept"
+	ActivityStreamsTentativeAccept = "TentativeAccept"
 	// ActivityStreamsTravel https://www.w3.org/TR/activitystreams-vocabulary/#dfn-travel
-	ActivityStreamsTravel ActivityStreamsActivity = "Travel"
+	ActivityStreamsTravel = "Travel"
 	// ActivityStreamsUndo https://www.w3.org/TR/activitystreams-vocabulary/#dfn-undo
-	ActivityStreamsUndo ActivityStreamsActivity = "Undo"
+	ActivityStreamsUndo = "Undo"
 	// ActivityStreamsUpdate https://www.w3.org/TR/activitystreams-vocabulary/#dfn-update
-	ActivityStreamsUpdate ActivityStreamsActivity = "Update"
+	ActivityStreamsUpdate = "Update"
 	// ActivityStreamsView https://www.w3.org/TR/activitystreams-vocabulary/#dfn-view
-	ActivityStreamsView ActivityStreamsActivity = "View"
+	ActivityStreamsView = "View"
 )

internal/gtsmodel/messages.go

@@ -9,8 +9,8 @@ package gtsmodel
 
 // FromClientAPI wraps a message that travels from client API into the processor
 type FromClientAPI struct {
-	APObjectType   ActivityStreamsObject
+	APObjectType   string
-	APActivityType ActivityStreamsActivity
+	APActivityType string
 	GTSModel       interface{}
 }
 
@@ -23,8 +23,8 @@ type FromClientAPI struct {
 
 // FromFederator wraps a message that travels from the federator into the processor
 type FromFederator struct {
-	APObjectType     ActivityStreamsObject
+	APObjectType     string
-	APActivityType   ActivityStreamsActivity
+	APActivityType   string
 	GTSModel         interface{}
 	ReceivingAccount *Account
 }

internal/gtsmodel/status.go

@@ -66,7 +66,7 @@ type Status struct {
 	VisibilityAdvanced *VisibilityAdvanced
 	// What is the activitystreams type of this status? See: https://www.w3.org/TR/activitystreams-vocabulary/#object-types
 	// Will probably almost always be Note but who knows!.
-	ActivityStreamsType ActivityStreamsObject
+	ActivityStreamsType string
 	// Original text of the status without formatting
 	Text string
 	// Has this status been pinned by its owner?

internal/typeutils/astointernal.go

@@ -90,7 +90,7 @@ func (c *converter) ASRepresentationToAccount(accountable Accountable) (*gtsmode
 	}
 
 	// check for bot and actor type
-	switch gtsmodel.ActivityStreamsActor(accountable.GetTypeName()) {
+	switch accountable.GetTypeName() {
 	case gtsmodel.ActivityStreamsPerson, gtsmodel.ActivityStreamsGroup, gtsmodel.ActivityStreamsOrganization:
 		// people, groups, and organizations aren't bots
 		acct.Bot = false
@@ -101,7 +101,7 @@ func (c *converter) ASRepresentationToAccount(accountable Accountable) (*gtsmode
 		// we don't know what this is!
 		return nil, fmt.Errorf("type name %s not recognised or not convertible to gtsmodel.ActivityStreamsActor", accountable.GetTypeName())
 	}
-	acct.ActorType = gtsmodel.ActivityStreamsActor(accountable.GetTypeName())
+	acct.ActorType = accountable.GetTypeName()
 
 	// TODO: locked aka manuallyApprovesFollowers
 
@@ -281,7 +281,10 @@ func (c *converter) ASStatusToStatus(statusable Statusable) (*gtsmodel.Status, e
 
 	// if it's CC'ed to public, it's public or unlocked
 	// mentioned SPECIFIC ACCOUNTS also get added to CC'es if it's not a direct message
-	if isPublic(cc) || isPublic(to) {
+	if isPublic(cc) {
+		visibility = gtsmodel.VisibilityUnlocked
+	}
+	if isPublic(to) {
 		visibility = gtsmodel.VisibilityPublic
 	}
 
@@ -301,7 +304,7 @@ func (c *converter) ASStatusToStatus(statusable Statusable) (*gtsmodel.Status, e
 	// we might be able to extract this from the contentMap field
 
 	// ActivityStreamsType
-	status.ActivityStreamsType = gtsmodel.ActivityStreamsObject(statusable.GetTypeName())
+	status.ActivityStreamsType = statusable.GetTypeName()
 
 	return status, nil
 }
@@ -341,6 +344,40 @@ func (c *converter) ASFollowToFollowRequest(followable Followable) (*gtsmodel.Fo
 	return followRequest, nil
 }
 
+func (c *converter) ASFollowToFollow(followable Followable) (*gtsmodel.Follow, error) {
+	idProp := followable.GetJSONLDId()
+	if idProp == nil || !idProp.IsIRI() {
+		return nil, errors.New("no id property set on follow, or was not an iri")
+	}
+	uri := idProp.GetIRI().String()
+
+	origin, err := extractActor(followable)
+	if err != nil {
+		return nil, errors.New("error extracting actor property from follow")
+	}
+	originAccount := &gtsmodel.Account{}
+	if err := c.db.GetWhere("uri", origin.String(), originAccount); err != nil {
+		return nil, fmt.Errorf("error extracting account with uri %s from the database: %s", origin.String(), err)
+	}
+
+	target, err := extractObject(followable)
+	if err != nil {
+		return nil, errors.New("error extracting object property from follow")
+	}
+	targetAccount := &gtsmodel.Account{}
+	if err := c.db.GetWhere("uri", target.String(), targetAccount); err != nil {
+		return nil, fmt.Errorf("error extracting account with uri %s from the database: %s", origin.String(), err)
+	}
+
+	follow := &gtsmodel.Follow{
+		URI:             uri,
+		AccountID:       originAccount.ID,
+		TargetAccountID: targetAccount.ID,
+	}
+
+	return follow, nil
+}
+
 func isPublic(tos []*url.URL) bool {
 	for _, entry := range tos {
 		if strings.EqualFold(entry.String(), "https://www.w3.org/ns/activitystreams#Public") {

internal/typeutils/converter.go

@@ -97,6 +97,8 @@ type TypeConverter interface {
 	ASStatusToStatus(statusable Statusable) (*gtsmodel.Status, error)
 	// ASFollowToFollowRequest converts a remote activitystreams `follow` representation into gts model follow request.
 	ASFollowToFollowRequest(followable Followable) (*gtsmodel.FollowRequest, error)
+	// ASFollowToFollowRequest converts a remote activitystreams `follow` representation into gts model follow.
+	ASFollowToFollow(followable Followable) (*gtsmodel.Follow, error)
 	
 	/*
 		INTERNAL (gts) MODEL TO ACTIVITYSTREAMS MODEL

testrig/actions.go

@@ -48,6 +48,7 @@ import (
 var Run action.GTSAction = func(ctx context.Context, _ *config.Config, log *logrus.Logger) error {
 	c := NewTestConfig()
 	dbService := NewTestDB()
+	federatingDB := NewTestFederatingDB(dbService)
 	router := NewTestRouter()
 	storageBackend := NewTestStorage()
 
@@ -59,7 +60,7 @@ var Run action.GTSAction = func(ctx context.Context, _ *config.Config, log *logr
 			Body:       r,
 		}, nil
 	}))
-	federator := federation.NewFederator(dbService, transportController, c, log, typeConverter)
+	federator := federation.NewFederator(dbService, federatingDB, transportController, c, log, typeConverter)
 	processor := NewTestProcessor(dbService, storageBackend, federator)
 	if err := processor.Start(); err != nil {
 		return fmt.Errorf("error starting processor: %s", err)

testrig/federatingdb.go

@@ -0,0 +1,11 @@
+package testrig
+
+import (
+	"github.com/superseriousbusiness/gotosocial/internal/db"
+	"github.com/superseriousbusiness/gotosocial/internal/federation"
+)
+
+// NewTestFederatingDB returns a federating DB with the underlying db
+func NewTestFederatingDB(db db.DB) federation.FederatingDB {
+	return federation.NewFederatingDB(db, NewTestConfig(), NewTestLog())
+}

testrig/federator.go

@@ -26,5 +26,5 @@ import (
 
 // NewTestFederator returns a federator with the given database and (mock!!) transport controller.
 func NewTestFederator(db db.DB, tc transport.Controller) federation.Federator {
-	return federation.NewFederator(db, tc, NewTestConfig(), NewTestLog(), NewTestTypeConverter(db))
+	return federation.NewFederator(db, NewTestFederatingDB(db), tc, NewTestConfig(), NewTestLog(), NewTestTypeConverter(db))
 }