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// 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/http"
"github.com/superseriousbusiness/activity/streams/vocab"
"github.com/superseriousbusiness/gotosocial/internal/ap"
"github.com/superseriousbusiness/gotosocial/internal/db"
"github.com/superseriousbusiness/gotosocial/internal/gtserror"
"github.com/superseriousbusiness/gotosocial/internal/id"
"github.com/superseriousbusiness/gotosocial/internal/log"
"github.com/superseriousbusiness/gotosocial/internal/messages"
)
func (f *federatingDB) Like(ctx context.Context, likeable vocab.ActivityStreamsLike) error {
log.DebugKV(ctx, "like", serialize{likeable})
// Mark activity as handled.
f.storeActivityID(likeable)
// Extract relevant values from passed ctx.
activityContext := getActivityContext(ctx)
if activityContext.internal {
return nil // Already processed.
}
requesting := activityContext.requestingAcct
receiving := activityContext.receivingAcct
if receiving.IsMoving() {
// A Moving account
// can't do this.
return nil
}
// Convert received AS like type to internal fave model.
fave, err := f.converter.ASLikeToFave(ctx, likeable)
if err != nil {
err := gtserror.Newf("error converting from AS type: %w", err)
return gtserror.WrapWithCode(http.StatusBadRequest, err)
}
// Ensure fave enacted by correct account.
if fave.AccountID != requesting.ID {
return gtserror.NewfWithCode(http.StatusForbidden, "requester %s is not expected actor %s",
requesting.URI, fave.Account.URI)
}
// Ensure fave received by correct account.
if fave.TargetAccountID != receiving.ID {
return gtserror.NewfWithCode(http.StatusForbidden, "receiver %s is not expected object %s",
receiving.URI, fave.TargetAccount.URI)
}
if !*fave.Status.Local {
// Only process likes of local statuses.
// TODO: process for remote statuses as well.
return nil
}
// Ensure valid Like target for requester.
policyResult, err := f.intFilter.StatusLikeable(ctx,
requesting,
fave.Status,
)
if err != nil {
return gtserror.Newf("error seeing if status %s is likeable: %w", fave.Status.URI, err)
}
if policyResult.Forbidden() {
return gtserror.NewWithCode(http.StatusForbidden, "requester does not have permission to Like status")
}
// Derive pendingApproval
// and preapproved status.
var (
pendingApproval bool
preApproved bool
)
switch {
case policyResult.WithApproval():
// Requester allowed to do
// this pending approval.
pendingApproval = true
case policyResult.MatchedOnCollection():
// Requester allowed to do this,
// but matched on collection.
// Preapprove Like and have the
// processor send out an Accept.
pendingApproval = true
preApproved = true
case policyResult.Permitted():
// Requester straight up
// permitted to do this,
// no need for Accept.
pendingApproval = false
}
// Set appropriate fields
// on fave and store it.
fave.ID = id.NewULID()
fave.PendingApproval = &pendingApproval
fave.PreApproved = preApproved
if err := f.state.DB.PutStatusFave(ctx, fave); err != nil {
if errors.Is(err, db.ErrAlreadyExists) {
// The fave already exists in the
// database, which means we've already
// handled side effects. We can just
// return nil here and be done with it.
return nil
}
return gtserror.Newf("error inserting %s into db: %w", fave.URI, err)
}
f.state.Workers.Federator.Queue.Push(&messages.FromFediAPI{
APObjectType: ap.ActivityLike,
APActivityType: ap.ActivityCreate,
GTSModel: fave,
Receiving: receiving,
Requesting: requesting,
})
return nil
}
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