GoToSocial/internal/federation/federatingdb/accept.go

510 lines
14 KiB
Go

// GoToSocial
// Copyright (C) GoToSocial Authors admin@gotosocial.org
// SPDX-License-Identifier: AGPL-3.0-or-later
//
// 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 federatingdb
import (
"context"
"errors"
"net/url"
"github.com/superseriousbusiness/activity/streams/vocab"
"github.com/superseriousbusiness/gotosocial/internal/ap"
"github.com/superseriousbusiness/gotosocial/internal/config"
"github.com/superseriousbusiness/gotosocial/internal/db"
"github.com/superseriousbusiness/gotosocial/internal/gtserror"
"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
"github.com/superseriousbusiness/gotosocial/internal/log"
"github.com/superseriousbusiness/gotosocial/internal/messages"
"github.com/superseriousbusiness/gotosocial/internal/uris"
"github.com/superseriousbusiness/gotosocial/internal/util"
)
func (f *federatingDB) GetAccept(
ctx context.Context,
acceptIRI *url.URL,
) (vocab.ActivityStreamsAccept, error) {
approval, err := f.state.DB.GetInteractionRequestByURI(ctx, acceptIRI.String())
if err != nil {
return nil, err
}
return f.converter.InteractionReqToASAccept(ctx, approval)
}
func (f *federatingDB) Accept(ctx context.Context, accept vocab.ActivityStreamsAccept) error {
log.DebugKV(ctx, "accept", serialize{accept})
activityContext := getActivityContext(ctx)
if activityContext.internal {
return nil // Already processed.
}
requestingAcct := activityContext.requestingAcct
receivingAcct := activityContext.receivingAcct
if requestingAcct.IsMoving() {
// A Moving account
// can't do this.
return nil
}
activityID := ap.GetJSONLDId(accept)
if activityID == nil {
// We need an ID.
const text = "Accept had no id property"
return gtserror.NewErrorBadRequest(errors.New(text), text)
}
// Ensure requester is the same as the
// Actor of the Accept; you can't Accept
// something on someone else's behalf.
actorURI, err := ap.ExtractActorURI(accept)
if err != nil {
const text = "Accept had empty or invalid actor property"
return gtserror.NewErrorBadRequest(errors.New(text), text)
}
if requestingAcct.URI != actorURI.String() {
const text = "Accept actor and requesting account were not the same"
return gtserror.NewErrorBadRequest(errors.New(text), text)
}
// Iterate all provided objects in the activity,
// handling the ones we know how to handle.
for _, object := range ap.ExtractObjects(accept) {
if asType := object.GetType(); asType != nil {
// Check and handle any vocab.Type objects.
switch name := asType.GetTypeName(); name {
// ACCEPT FOLLOW
case ap.ActivityFollow:
if err := f.acceptFollowType(
ctx,
asType,
receivingAcct,
requestingAcct,
); err != nil {
return err
}
// UNHANDLED
default:
log.Debugf(ctx, "unhandled object type: %s", name)
}
} else if object.IsIRI() {
// Check and handle any
// IRI type objects.
switch objIRI := object.GetIRI(); {
// ACCEPT FOLLOW
case uris.IsFollowPath(objIRI):
if err := f.acceptFollowIRI(
ctx,
objIRI.String(),
receivingAcct,
requestingAcct,
); err != nil {
return err
}
// ACCEPT LIKE
case uris.IsLikePath(objIRI):
if err := f.acceptLikeIRI(
ctx,
activityID.String(),
objIRI.String(),
receivingAcct,
requestingAcct,
); err != nil {
return err
}
// ACCEPT OTHER (reply? boost?)
//
// Don't check on IsStatusesPath
// as this may be a remote status.
default:
if err := f.acceptOtherIRI(
ctx,
activityID,
objIRI,
receivingAcct,
requestingAcct,
); err != nil {
return err
}
}
}
}
return nil
}
func (f *federatingDB) acceptFollowType(
ctx context.Context,
asType vocab.Type,
receivingAcct *gtsmodel.Account,
requestingAcct *gtsmodel.Account,
) error {
// Cast the vocab.Type object to known AS type.
asFollow := asType.(vocab.ActivityStreamsFollow)
// Reconstruct the follow.
follow, err := f.converter.ASFollowToFollow(ctx, asFollow)
if err != nil {
err := gtserror.Newf("error converting Follow to *gtsmodel.Follow: %w", err)
return gtserror.NewErrorInternalError(err)
}
// Lock on the Follow URI
// as we may be updating it.
unlock := f.state.FedLocks.Lock(follow.URI)
defer unlock()
// Make sure the creator of the original follow
// is the same as whatever inbox this landed in.
if follow.AccountID != receivingAcct.ID {
const text = "Follow account and inbox account were not the same"
return gtserror.NewErrorUnprocessableEntity(errors.New(text), text)
}
// Make sure the target of the original follow
// is the same as the account making the request.
if follow.TargetAccountID != requestingAcct.ID {
const text = "Follow target account and requesting account were not the same"
return gtserror.NewErrorForbidden(errors.New(text), text)
}
// Accept and get the populated follow back.
follow, err = f.state.DB.AcceptFollowRequest(
ctx,
follow.AccountID,
follow.TargetAccountID,
)
if err != nil && !errors.Is(err, db.ErrNoEntries) {
err := gtserror.Newf("db error accepting follow request: %w", err)
return gtserror.NewErrorInternalError(err)
}
if follow == nil {
// There was no follow request
// to accept, just return 202.
return nil
}
// Send the accepted follow through
// the processor to do side effects.
f.state.Workers.Federator.Queue.Push(&messages.FromFediAPI{
APObjectType: ap.ActivityFollow,
APActivityType: ap.ActivityAccept,
GTSModel: follow,
Receiving: receivingAcct,
Requesting: requestingAcct,
})
return nil
}
func (f *federatingDB) acceptFollowIRI(
ctx context.Context,
objectIRI string,
receivingAcct *gtsmodel.Account,
requestingAcct *gtsmodel.Account,
) error {
// Lock on this potential Follow
// URI as we may be updating it.
unlock := f.state.FedLocks.Lock(objectIRI)
defer unlock()
// Get the follow req from the db.
followReq, err := f.state.DB.GetFollowRequestByURI(ctx, objectIRI)
if err != nil && !errors.Is(err, db.ErrNoEntries) {
err := gtserror.Newf("db error getting follow request: %w", err)
return gtserror.NewErrorInternalError(err)
}
if followReq == nil {
// We didn't have a follow request
// with this URI, so nothing to do.
// Just return.
return nil
}
// Make sure the creator of the original follow
// is the same as whatever inbox this landed in.
if followReq.AccountID != receivingAcct.ID {
const text = "Follow account and inbox account were not the same"
return gtserror.NewErrorUnprocessableEntity(errors.New(text), text)
}
// Make sure the target of the original follow
// is the same as the account making the request.
if followReq.TargetAccountID != requestingAcct.ID {
const text = "Follow target account and requesting account were not the same"
return gtserror.NewErrorForbidden(errors.New(text), text)
}
// Accept and get the populated follow back.
follow, err := f.state.DB.AcceptFollowRequest(
ctx,
followReq.AccountID,
followReq.TargetAccountID,
)
if err != nil && !errors.Is(err, db.ErrNoEntries) {
err := gtserror.Newf("db error accepting follow request: %w", err)
return gtserror.NewErrorInternalError(err)
}
if follow == nil {
// There was no follow request
// to accept, just return 202.
return nil
}
// Send the accepted follow through
// the processor to do side effects.
f.state.Workers.Federator.Queue.Push(&messages.FromFediAPI{
APObjectType: ap.ActivityFollow,
APActivityType: ap.ActivityAccept,
GTSModel: follow,
Receiving: receivingAcct,
Requesting: requestingAcct,
})
return nil
}
func (f *federatingDB) acceptOtherIRI(
ctx context.Context,
activityID *url.URL,
objectIRI *url.URL,
receivingAcct *gtsmodel.Account,
requestingAcct *gtsmodel.Account,
) error {
// See if we can get a status from the db.
status, err := f.state.DB.GetStatusByURI(ctx, objectIRI.String())
if err != nil && !errors.Is(err, db.ErrNoEntries) {
err := gtserror.Newf("db error getting status: %w", err)
return gtserror.NewErrorInternalError(err)
}
if status != nil {
// We had a status stored with this
// objectIRI, proceed to accept it.
return f.acceptStoredStatus(
ctx,
activityID,
status,
receivingAcct,
requestingAcct,
)
}
if objectIRI.Host == config.GetHost() ||
objectIRI.Host == config.GetAccountDomain() {
// Claims to be Accepting something of ours,
// but we don't have a status stored for this
// URI, so most likely it's been deleted in
// the meantime, just bail.
return nil
}
// This must be an Accept of a remote Activity
// or Object. Ensure relevance of this message
// by checking that receiver follows requester.
following, err := f.state.DB.IsFollowing(
ctx,
receivingAcct.ID,
requestingAcct.ID,
)
if err != nil {
err := gtserror.Newf("db error checking following: %w", err)
return gtserror.NewErrorInternalError(err)
}
if !following {
// If we don't follow this person, and
// they're not Accepting something we know
// about, then we don't give a good goddamn.
return nil
}
// This may be a reply, or it may be a boost,
// we can't know yet without dereferencing it,
// but let the processor worry about that.
apObjectType := ap.ObjectUnknown
// Pass to the processor and let them handle side effects.
f.state.Workers.Federator.Queue.Push(&messages.FromFediAPI{
APObjectType: apObjectType,
APActivityType: ap.ActivityAccept,
APIRI: activityID,
APObject: objectIRI,
Receiving: receivingAcct,
Requesting: requestingAcct,
})
return nil
}
func (f *federatingDB) acceptStoredStatus(
ctx context.Context,
activityID *url.URL,
status *gtsmodel.Status,
receivingAcct *gtsmodel.Account,
requestingAcct *gtsmodel.Account,
) error {
// Lock on this status URI
// as we may be updating it.
unlock := f.state.FedLocks.Lock(status.URI)
defer unlock()
pendingApproval := util.PtrOrValue(status.PendingApproval, false)
if !pendingApproval {
// Status doesn't need approval or it's
// already been approved by an Accept.
// Just return.
return nil
}
// Make sure the target of the interaction (reply/boost)
// is the same as the account doing the Accept.
if status.BoostOfAccountID != requestingAcct.ID &&
status.InReplyToAccountID != requestingAcct.ID {
const text = "status reply to or boost of account and requesting account were not the same"
return gtserror.NewErrorForbidden(errors.New(text), text)
}
// Mark the status as approved by this Accept URI.
status.PendingApproval = util.Ptr(false)
status.ApprovedByURI = activityID.String()
if err := f.state.DB.UpdateStatus(
ctx,
status,
"pending_approval",
"approved_by_uri",
); err != nil {
err := gtserror.Newf("db error accepting status: %w", err)
return gtserror.NewErrorInternalError(err)
}
var apObjectType string
if status.InReplyToID != "" {
// Accepting a Reply.
apObjectType = ap.ObjectNote
} else {
// Accepting an Announce.
apObjectType = ap.ActivityAnnounce
}
// Send the now-approved status through to the
// fedi worker again to process side effects.
f.state.Workers.Federator.Queue.Push(&messages.FromFediAPI{
APObjectType: apObjectType,
APActivityType: ap.ActivityAccept,
GTSModel: status,
Receiving: receivingAcct,
Requesting: requestingAcct,
})
return nil
}
func (f *federatingDB) acceptLikeIRI(
ctx context.Context,
activityID string,
objectIRI string,
receivingAcct *gtsmodel.Account,
requestingAcct *gtsmodel.Account,
) error {
// Lock on this potential Like
// URI as we may be updating it.
unlock := f.state.FedLocks.Lock(objectIRI)
defer unlock()
// Get the fave from the db.
fave, err := f.state.DB.GetStatusFaveByURI(ctx, objectIRI)
if err != nil && !errors.Is(err, db.ErrNoEntries) {
err := gtserror.Newf("db error getting fave: %w", err)
return gtserror.NewErrorInternalError(err)
}
if fave == nil {
// We didn't have a fave with
// this URI, so nothing to do.
// Just return.
return nil
}
if !fave.Account.IsLocal() {
// We don't process Accepts of Likes
// that weren't created on our instance.
// Just return.
return nil
}
pendingApproval := util.PtrOrValue(fave.PendingApproval, false)
if !pendingApproval {
// Like doesn't need approval or it's
// already been approved by an Accept.
// Just return.
return nil
}
// Make sure the creator of the original Like
// is the same as the inbox processing the Accept;
// this also ensures the Like is local.
if fave.AccountID != receivingAcct.ID {
const text = "fave creator account and inbox account were not the same"
return gtserror.NewErrorUnprocessableEntity(errors.New(text), text)
}
// Make sure the target of the Like is the
// same as the account doing the Accept.
if fave.TargetAccountID != requestingAcct.ID {
const text = "status fave target account and requesting account were not the same"
return gtserror.NewErrorForbidden(errors.New(text), text)
}
// Mark the fave as approved by this Accept URI.
fave.PendingApproval = util.Ptr(false)
fave.ApprovedByURI = activityID
if err := f.state.DB.UpdateStatusFave(
ctx,
fave,
"pending_approval",
"approved_by_uri",
); err != nil {
err := gtserror.Newf("db error accepting status: %w", err)
return gtserror.NewErrorInternalError(err)
}
// Send the now-approved fave through to the
// fedi worker again to process side effects.
f.state.Workers.Federator.Queue.Push(&messages.FromFediAPI{
APObjectType: ap.ActivityLike,
APActivityType: ap.ActivityAccept,
GTSModel: fave,
Receiving: receivingAcct,
Requesting: requestingAcct,
})
return nil
}