66 lines
2.1 KiB
Go
66 lines
2.1 KiB
Go
// mautrix-signal - A Matrix-signal puppeting bridge.
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// Copyright (C) 2023 Sumner Evans
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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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#cgo LDFLAGS: -lsignal_ffi -ldl -lm
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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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"context"
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"runtime"
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"unsafe"
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"github.com/google/uuid"
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)
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func GroupEncrypt(ctx context.Context, ptext []byte, sender *Address, distributionID uuid.UUID, store SenderKeyStore) (*CiphertextMessage, error) {
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callbackCtx := NewCallbackContext(ctx)
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defer callbackCtx.Unref()
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var ciphertextMessage *C.SignalCiphertextMessage
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signalFfiError := C.signal_group_encrypt_message(
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&ciphertextMessage,
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sender.ptr,
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(*[C.SignalUUID_LEN]C.uchar)(unsafe.Pointer(&distributionID)),
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BytesToBuffer(ptext),
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callbackCtx.wrapSenderKeyStore(store))
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runtime.KeepAlive(ptext)
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runtime.KeepAlive(sender)
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if signalFfiError != nil {
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return nil, callbackCtx.wrapError(signalFfiError)
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}
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return wrapCiphertextMessage(ciphertextMessage), nil
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}
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func GroupDecrypt(ctx context.Context, ctext []byte, sender *Address, store SenderKeyStore) ([]byte, error) {
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callbackCtx := NewCallbackContext(ctx)
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defer callbackCtx.Unref()
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var resp C.SignalOwnedBuffer = C.SignalOwnedBuffer{}
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signalFfiError := C.signal_group_decrypt_message(
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&resp,
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sender.ptr,
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BytesToBuffer(ctext),
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callbackCtx.wrapSenderKeyStore(store))
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runtime.KeepAlive(ctext)
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runtime.KeepAlive(sender)
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if signalFfiError != nil {
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return nil, callbackCtx.wrapError(signalFfiError)
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}
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return CopySignalOwnedBufferToBytes(resp), nil
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}
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