78 lines
3.2 KiB
Go
78 lines
3.2 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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typedef const SignalProtocolAddress const_address;
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typedef const SignalSenderKeyRecord const_sender_key_record;
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typedef const uint8_t const_uuid_bytes[16];
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extern int signal_load_sender_key_callback(void *store_ctx, SignalSenderKeyRecord**, const_address*, const_uuid_bytes*);
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extern int signal_store_sender_key_callback(void *store_ctx, const_address*, const_uuid_bytes*, const_sender_key_record*);
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*/
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import "C"
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import (
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"context"
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"unsafe"
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"github.com/google/uuid"
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)
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type SenderKeyStore interface {
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LoadSenderKey(ctx context.Context, sender *Address, distributionID uuid.UUID) (*SenderKeyRecord, error)
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StoreSenderKey(ctx context.Context, sender *Address, distributionID uuid.UUID, record *SenderKeyRecord) error
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}
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//export signal_load_sender_key_callback
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func signal_load_sender_key_callback(storeCtx unsafe.Pointer, recordp **C.SignalSenderKeyRecord, address *C.const_address, distributionIDBytes *C.const_uuid_bytes) C.int {
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return wrapStoreCallback(storeCtx, func(store SenderKeyStore, ctx context.Context) error {
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distributionID := uuid.UUID(*(*[16]byte)(unsafe.Pointer(distributionIDBytes)))
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record, err := store.LoadSenderKey(ctx, &Address{ptr: (*C.SignalProtocolAddress)(unsafe.Pointer(address))}, distributionID)
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if err == nil && record != nil {
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record.CancelFinalizer()
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*recordp = record.ptr
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}
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return err
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})
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}
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//export signal_store_sender_key_callback
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func signal_store_sender_key_callback(storeCtx unsafe.Pointer, address *C.const_address, distributionIDBytes *C.const_uuid_bytes, senderKeyRecord *C.const_sender_key_record) C.int {
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return wrapStoreCallback(storeCtx, func(store SenderKeyStore, ctx context.Context) error {
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distributionID := uuid.UUID(*(*[16]byte)(unsafe.Pointer(distributionIDBytes)))
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record := SenderKeyRecord{ptr: (*C.SignalSenderKeyRecord)(unsafe.Pointer(senderKeyRecord))}
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cloned, err := record.Clone()
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if err != nil {
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return err
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}
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return store.StoreSenderKey(ctx, &Address{ptr: (*C.SignalProtocolAddress)(unsafe.Pointer(address))}, distributionID, cloned)
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})
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}
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func (ctx *CallbackContext) wrapSenderKeyStore(store SenderKeyStore) *C.SignalSenderKeyStore {
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return &C.SignalSenderKeyStore{
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ctx: wrapStore(ctx, store),
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load_sender_key: C.SignalLoadSenderKey(C.signal_load_sender_key_callback),
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store_sender_key: C.SignalStoreSenderKey(C.signal_store_sender_key_callback),
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}
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}
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