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Only skip fetching keys during Megolm decryption if disabled

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Blanket disabling caused a lot of side effects which were hard to
deal with without major refactoring.

This should probably be an argument to DecryptMegolm instead of a
flag.
This commit is contained in:
Toni Spets 2024-01-17 09:26:13 +02:00 • committed by Toni Spets
commit 6ac759c8ff
2 changed files with 10 additions and 10 deletions
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14
crypto/machine.go
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@ -33,8 +33,8 @@ type OlmMachine struct {
PlaintextMentions bool
// Never ask the server for keys automatically as a side effect.
DisableKeyFetching bool
// Never ask the server for keys automatically as a side effect during Megolm decryption.
DisableDecryptKeyFetching bool
SendKeysMinTrust id.TrustState
ShareKeysMinTrust id.TrustState
@ -227,11 +227,7 @@ func (mach *OlmMachine) HandleDeviceLists(ctx context.Context, dl *mautrix.Devic
Str("trace_id", traceID).
Interface("changes", dl.Changed).
Msg("Device list changes in /sync")
if mach.DisableKeyFetching {
mach.CryptoStore.MarkTrackedUsersOutdated(ctx, dl.Changed)
} else {
mach.FetchKeys(ctx, dl.Changed, false)
}
mach.FetchKeys(ctx, dl.Changed, false)
mach.Log.Debug().Str("trace_id", traceID).Msg("Finished handling device list changes")
}
}
@ -420,7 +416,7 @@ func (mach *OlmMachine) GetOrFetchDevice(ctx context.Context, userID id.UserID,
device, err := mach.CryptoStore.GetDevice(ctx, userID, deviceID)
if err != nil {
return nil, fmt.Errorf("failed to get sender device from store: %w", err)
} else if device != nil || mach.DisableKeyFetching {
} else if device != nil {
return device, nil
}
if usersToDevices, err := mach.FetchKeys(ctx, []id.UserID{userID}, true); err != nil {
@ -439,7 +435,7 @@ func (mach *OlmMachine) GetOrFetchDevice(ctx context.Context, userID id.UserID,
// the given identity key.
func (mach *OlmMachine) GetOrFetchDeviceByKey(ctx context.Context, userID id.UserID, identityKey id.IdentityKey) (*id.Device, error) {
deviceIdentity, err := mach.CryptoStore.FindDeviceByKey(ctx, userID, identityKey)
if err != nil || deviceIdentity != nil || mach.DisableKeyFetching {
if err != nil || deviceIdentity != nil {
return deviceIdentity, err
}
mach.machOrContextLog(ctx).Debug().