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https://github.com/mautrix/signal.git
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114 lines
3.5 KiB
Go
114 lines
3.5 KiB
Go
// mautrix-signal - A Matrix-signal puppeting bridge.
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// Copyright (C) 2023 Sumner Evans
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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 "runtime"
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type FingerprintVersion uint32
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const (
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FingerprintVersionV1 FingerprintVersion = 1
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FingerprintVersionV2 FingerprintVersion = 2
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)
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type Fingerprint struct {
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nc noCopy
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ptr *C.SignalFingerprint
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}
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func wrapFingerprint(ptr *C.SignalFingerprint) *Fingerprint {
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fingerprint := &Fingerprint{ptr: ptr}
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runtime.SetFinalizer(fingerprint, (*Fingerprint).Destroy)
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return fingerprint
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}
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func NewFingerprint(iterations, version FingerprintVersion, localIdentifier []byte, localKey *PublicKey, remoteIdentifier []byte, remoteKey *PublicKey) (*Fingerprint, error) {
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var pa C.SignalMutPointerFingerprint
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signalFfiError := C.signal_fingerprint_new(
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&pa,
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C.uint32_t(iterations),
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C.uint32_t(version),
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BytesToBuffer(localIdentifier),
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localKey.constPtr(),
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BytesToBuffer(remoteIdentifier),
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remoteKey.constPtr(),
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)
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if signalFfiError != nil {
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return nil, wrapError(signalFfiError)
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}
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return wrapFingerprint(pa.raw), nil
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}
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func (f *Fingerprint) mutPtr() C.SignalMutPointerFingerprint {
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return C.SignalMutPointerFingerprint{f.ptr}
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}
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func (f *Fingerprint) constPtr() C.SignalConstPointerFingerprint {
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return C.SignalConstPointerFingerprint{f.ptr}
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}
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func (f *Fingerprint) Clone() (*Fingerprint, error) {
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var cloned C.SignalMutPointerFingerprint
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signalFfiError := C.signal_fingerprint_clone(&cloned, f.constPtr())
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runtime.KeepAlive(f)
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if signalFfiError != nil {
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return nil, wrapError(signalFfiError)
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}
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return wrapFingerprint(cloned.raw), nil
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}
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func (f *Fingerprint) Destroy() error {
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runtime.SetFinalizer(f, nil)
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return wrapError(C.signal_fingerprint_destroy(f.mutPtr()))
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}
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func (f *Fingerprint) ScannableEncoding() ([]byte, error) {
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var scannableEncoding C.SignalOwnedBuffer = C.SignalOwnedBuffer{}
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signalFfiError := C.signal_fingerprint_scannable_encoding(&scannableEncoding, f.constPtr())
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runtime.KeepAlive(f)
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if signalFfiError != nil {
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return nil, wrapError(signalFfiError)
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}
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return CopySignalOwnedBufferToBytes(scannableEncoding), nil
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}
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func (f *Fingerprint) DisplayString() (string, error) {
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var displayString *C.char
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signalFfiError := C.signal_fingerprint_display_string(&displayString, f.constPtr())
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runtime.KeepAlive(f)
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if signalFfiError != nil {
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return "", wrapError(signalFfiError)
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}
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return CopyCStringToString(displayString), nil
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}
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func (f *Fingerprint) Compare(fingerprint1, fingerprint2 []byte) (bool, error) {
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var compare C.bool
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signalFfiError := C.signal_fingerprint_compare(&compare, BytesToBuffer(fingerprint1), BytesToBuffer(fingerprint2))
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runtime.KeepAlive(f)
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runtime.KeepAlive(fingerprint1)
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runtime.KeepAlive(fingerprint2)
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if signalFfiError != nil {
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return false, wrapError(signalFfiError)
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}
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return bool(compare), nil
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}
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