104 lines
3.0 KiB
Go
104 lines
3.0 KiB
Go
// mautrix-signal - A Matrix-signal puppeting bridge.
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// Copyright (C) 2025 Tulir Asokan
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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 <https://www.gnu.org/licenses/>.
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package libsignalgo
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/*
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#include "./libsignal-ffi.h"
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*/
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import "C"
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import (
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"runtime"
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"unsafe"
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)
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type MessageBackupKey struct {
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nc noCopy
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ptr *C.SignalMessageBackupKey
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}
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func wrapMessageBackupKey(ptr *C.SignalMessageBackupKey) *MessageBackupKey {
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backupKey := &MessageBackupKey{ptr: ptr}
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runtime.SetFinalizer(backupKey, (*MessageBackupKey).Destroy)
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return backupKey
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}
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func MessageBackupKeyFromAccountEntropyPool(aep AccountEntropyPool, aci ServiceID) (*MessageBackupKey, error) {
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var bk C.SignalMutPointerMessageBackupKey
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signalFfiError := C.signal_message_backup_key_from_account_entropy_pool(
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&bk,
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C.CString(string(aep)),
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aci.CFixedBytes(),
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)
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runtime.KeepAlive(aep)
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if signalFfiError != nil {
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return nil, wrapError(signalFfiError)
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}
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return wrapMessageBackupKey(bk.raw), nil
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}
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func MessageBackupKeyFromBackupKeyAndID(backupKey *BackupKey, backupID *BackupID) (*MessageBackupKey, error) {
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var bk C.SignalMutPointerMessageBackupKey
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signalFfiError := C.signal_message_backup_key_from_backup_key_and_backup_id(
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&bk,
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(*[C.SignalBACKUP_KEY_LEN]C.uint8_t)(unsafe.Pointer(backupKey)),
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(*[BackupIDLength]C.uint8_t)(unsafe.Pointer(backupID)),
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)
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runtime.KeepAlive(backupKey)
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runtime.KeepAlive(backupID)
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if signalFfiError != nil {
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return nil, wrapError(signalFfiError)
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}
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return wrapMessageBackupKey(bk.raw), nil
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}
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func (bk *MessageBackupKey) mutPtr() C.SignalMutPointerMessageBackupKey {
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return C.SignalMutPointerMessageBackupKey{bk.ptr}
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}
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func (bk *MessageBackupKey) constPtr() C.SignalConstPointerMessageBackupKey {
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return C.SignalConstPointerMessageBackupKey{bk.ptr}
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}
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func (bk *MessageBackupKey) Destroy() error {
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runtime.SetFinalizer(bk, nil)
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return wrapError(C.signal_message_backup_key_destroy(bk.mutPtr()))
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}
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func (bk *MessageBackupKey) GetHMACKey() ([32]byte, error) {
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var out [32]byte
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signalFfiError := C.signal_message_backup_key_get_hmac_key(
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(*[32]C.uint8_t)(unsafe.Pointer(&out)),
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bk.constPtr(),
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)
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if signalFfiError != nil {
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return out, wrapError(signalFfiError)
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}
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return out, nil
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}
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func (bk *MessageBackupKey) GetAESKey() ([32]byte, error) {
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var out [32]byte
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signalFfiError := C.signal_message_backup_key_get_aes_key(
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(*[32]C.uint8_t)(unsafe.Pointer(&out)),
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bk.constPtr(),
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)
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if signalFfiError != nil {
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return out, wrapError(signalFfiError)
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}
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return out, nil
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}
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