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// SPDX-FileCopyrightText: 2021 Carl Schwan <carlschwan@kde.org>
//
// SPDX-License-Identifier: LGPL-2.1-or-later
#include "e2ee/qolmutility.h"
#include <olm/olm.h>
using namespace Quotient;
// Convert olm error to enum
QOlmError lastError(OlmUtility *utility) {
return fromString(olm_utility_last_error(utility));
}
QOlmUtility::QOlmUtility()
{
auto utility = new uint8_t[olm_utility_size()];
m_utility = olm_utility(utility);
}
QOlmUtility::~QOlmUtility()
{
olm_clear_utility(m_utility);
delete[](reinterpret_cast<uint8_t *>(m_utility));
}
QString QOlmUtility::sha256Bytes(const QByteArray &inputBuf) const
{
const auto outputLen = olm_sha256_length(m_utility);
QByteArray outputBuf(outputLen, '0');
olm_sha256(m_utility, inputBuf.data(), inputBuf.length(),
outputBuf.data(), outputBuf.length());
return QString::fromUtf8(outputBuf);
}
QString QOlmUtility::sha256Utf8Msg(const QString &message) const
{
return sha256Bytes(message.toUtf8());
}
QOlmExpected<bool> QOlmUtility::ed25519Verify(const QByteArray& key,
const QByteArray& message,
const QByteArray& signature)
{
QByteArray signatureBuf(signature.length(), '0');
std::copy(signature.begin(), signature.end(), signatureBuf.begin());
const auto ret = olm_ed25519_verify(m_utility, key.data(), key.size(),
message.data(), message.size(), (void *)signatureBuf.data(), signatureBuf.size());
if (ret == olm_error()) {
auto error = lastError(m_utility);
if (error == QOlmError::BadMessageMac) {
return false;
}
return error;
}
return !ret; // ret == 0 means success
}
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