mirror of
https://github.com/superseriousbusiness/gotosocial.git
synced 2024-10-23 05:22:18 +00:00
9cd27b412d
* on account update, ensure that public key has not changed * change expected error message * also support the case of changing account keys when expired (not waiting for handshake) * tweak account update hardening logic, add tests for updating account with pubkey expired * add check for whether incoming data was via federator, accepting keys if so * use freshest window for federated account updates + comment about it
55 lines
1.8 KiB
Go
55 lines
1.8 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 dereferencing
|
|
|
|
import (
|
|
"time"
|
|
|
|
"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
|
|
)
|
|
|
|
// verifyAccountKeysOnUpdate verifies that account's public key hasn't changed on update from
|
|
// our existing stored representation, UNLESS the key has been explicitly expired (i.e. key rotation).
|
|
func verifyAccountKeysOnUpdate(existing, latest *gtsmodel.Account, now time.Time, federated bool) bool {
|
|
if federated {
|
|
// If this data was federated
|
|
// to us then we implicitly trust
|
|
// it on the grounds that it
|
|
// passed any signature checks.
|
|
return true
|
|
}
|
|
|
|
if existing.PublicKey == nil {
|
|
// New account which has been
|
|
// passed as a placeholder.
|
|
// This is always permitted.
|
|
return true
|
|
}
|
|
|
|
// Ensure that public keys have not changed.
|
|
if existing.PublicKey.Equal(latest.PublicKey) &&
|
|
existing.PublicKeyURI == latest.PublicKeyURI {
|
|
return true
|
|
}
|
|
|
|
// The only time that an account key change is
|
|
// permitted is when it is marked as expired.
|
|
return !existing.PublicKeyExpiresAt.IsZero() &&
|
|
existing.PublicKeyExpiresAt.Before(now)
|
|
}
|