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/*
GoToSocial
Copyright (C) 2021-2023 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 federation
import (
"context"
"net/url"
"github.com/superseriousbusiness/activity/pub"
"github.com/superseriousbusiness/gotosocial/internal/ap"
"github.com/superseriousbusiness/gotosocial/internal/db"
"github.com/superseriousbusiness/gotosocial/internal/federation/dereferencing"
"github.com/superseriousbusiness/gotosocial/internal/federation/federatingdb"
"github.com/superseriousbusiness/gotosocial/internal/gtserror"
"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
"github.com/superseriousbusiness/gotosocial/internal/media"
"github.com/superseriousbusiness/gotosocial/internal/transport"
"github.com/superseriousbusiness/gotosocial/internal/typeutils"
)
// Federator wraps various interfaces and functions to manage activitypub federation from gotosocial
type Federator interface {
// FederatingActor returns the underlying pub.FederatingActor, which can be used to send activities, and serve actors at inboxes/outboxes.
FederatingActor() pub.FederatingActor
// FederatingDB returns the underlying FederatingDB interface.
FederatingDB() federatingdb.DB
// TransportController returns the underlying transport controller.
TransportController() transport.Controller
// AuthenticateFederatedRequest can be used to check the authenticity of incoming http-signed requests for federating resources.
// The given username will be used to create a transport for making outgoing requests. See the implementation for more detailed comments.
//
// If the request is valid and passes authentication, the URL of the key owner ID will be returned, as well as true, and nil.
//
// If the request does not pass authentication, or there's a domain block, nil, false, nil will be returned.
//
// If something goes wrong during authentication, nil, false, and an error will be returned.
AuthenticateFederatedRequest(ctx context.Context, username string) (*url.URL, gtserror.WithCode)
/*
dereferencing functions
*/
DereferenceRemoteThread(ctx context.Context, username string, statusURI *url.URL, status *gtsmodel.Status, statusable ap.Statusable)
DereferenceAnnounce(ctx context.Context, announce *gtsmodel.Status, requestingUsername string) error
GetAccount(ctx context.Context, params dereferencing.GetAccountParams) (*gtsmodel.Account, error)
GetStatus(ctx context.Context, username string, remoteStatusID *url.URL, refetch, includeParent bool) (*gtsmodel.Status, ap.Statusable, error)
EnrichRemoteStatus(ctx context.Context, username string, status *gtsmodel.Status, includeParent bool) (*gtsmodel.Status, error)
GetRemoteInstance(ctx context.Context, username string, remoteInstanceURI *url.URL) (*gtsmodel.Instance, error)
// Handshaking returns true if the given username is currently in the process of dereferencing the remoteAccountID.
Handshaking(ctx context.Context, username string, remoteAccountID *url.URL) bool
pub.CommonBehavior
pub.FederatingProtocol
}
type federator struct {
db db.DB
federatingDB federatingdb.DB
clock pub.Clock
typeConverter typeutils.TypeConverter
transportController transport.Controller
dereferencer dereferencing.Dereferencer
mediaManager media.Manager
actor pub.FederatingActor
}
// NewFederator returns a new federator
func NewFederator(db db.DB, federatingDB federatingdb.DB, transportController transport.Controller, typeConverter typeutils.TypeConverter, mediaManager media.Manager) Federator {
dereferencer := dereferencing.NewDereferencer(db, typeConverter, transportController, mediaManager)
clock := &Clock{}
f := &federator{
db: db,
federatingDB: federatingDB,
clock: &Clock{},
typeConverter: typeConverter,
transportController: transportController,
dereferencer: dereferencer,
mediaManager: mediaManager,
}
actor := newFederatingActor(f, f, federatingDB, clock)
f.actor = actor
return f
}
func (f *federator) FederatingActor() pub.FederatingActor {
return f.actor
}
func (f *federator) FederatingDB() federatingdb.DB {
return f.federatingDB
}
func (f *federator) TransportController() transport.Controller {
return f.transportController
}
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