mirror of
https://github.com/superseriousbusiness/gotosocial
synced 2024-12-16 10:38:47 +01:00
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
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// Copyright (C) GoToSocial Authors admin@gotosocial.org
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// SPDX-License-Identifier: AGPL-3.0-or-later
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package dereferencing
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import (
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"time"
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"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
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)
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// verifyAccountKeysOnUpdate verifies that account's public key hasn't changed on update from
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// our existing stored representation, UNLESS the key has been explicitly expired (i.e. key rotation).
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func verifyAccountKeysOnUpdate(existing, latest *gtsmodel.Account, now time.Time, federated bool) bool {
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if federated {
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// If this data was federated
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// to us then we implicitly trust
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// it on the grounds that it
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// passed any signature checks.
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return true
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}
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if existing.PublicKey == nil {
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// New account which has been
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// passed as a placeholder.
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// This is always permitted.
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return true
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}
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// Ensure that public keys have not changed.
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if existing.PublicKey.Equal(latest.PublicKey) &&
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existing.PublicKeyURI == latest.PublicKeyURI {
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return true
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}
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// The only time that an account key change is
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// permitted is when it is marked as expired.
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return !existing.PublicKeyExpiresAt.IsZero() &&
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existing.PublicKeyExpiresAt.Before(now)
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}
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