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// SPDX-FileCopyrightText: 2021 Carl Schwan <carlschwan@kde.org>
//
// SPDX-License-Identifier: LGPL-2.1-or-later
#include "e2ee/qolmoutboundsession.h"
#include "e2ee/qolmutils.h"
#include <olm/olm.h>
using namespace Quotient;
OlmErrorCode QOlmOutboundGroupSession::lastErrorCode() const {
return olm_outbound_group_session_last_error_code(m_groupSession);
}
const char* QOlmOutboundGroupSession::lastError() const
{
return olm_outbound_group_session_last_error(m_groupSession);
}
QOlmOutboundGroupSession::QOlmOutboundGroupSession(OlmOutboundGroupSession *session)
: m_groupSession(session)
{}
QOlmOutboundGroupSession::~QOlmOutboundGroupSession()
{
olm_clear_outbound_group_session(m_groupSession);
delete[](reinterpret_cast<uint8_t *>(m_groupSession));
}
QOlmOutboundGroupSessionPtr QOlmOutboundGroupSession::create()
{
auto *olmOutboundGroupSession = olm_outbound_group_session(new uint8_t[olm_outbound_group_session_size()]);
const auto randomLength = olm_init_outbound_group_session_random_length(olmOutboundGroupSession);
QByteArray randomBuf = getRandom(randomLength);
if (olm_init_outbound_group_session(
olmOutboundGroupSession,
reinterpret_cast<uint8_t*>(randomBuf.data()), randomBuf.length())
== olm_error()) {
// FIXME: create the session object earlier and use lastError()
throw olm_outbound_group_session_last_error_code(olmOutboundGroupSession);
}
const auto keyMaxLength = olm_outbound_group_session_key_length(olmOutboundGroupSession);
QByteArray keyBuffer(keyMaxLength, '0');
olm_outbound_group_session_key(olmOutboundGroupSession, reinterpret_cast<uint8_t *>(keyBuffer.data()),
keyMaxLength);
randomBuf.clear();
return std::make_unique<QOlmOutboundGroupSession>(olmOutboundGroupSession);
}
QOlmExpected<QByteArray> QOlmOutboundGroupSession::pickle(const PicklingMode &mode) const
{
QByteArray pickledBuf(olm_pickle_outbound_group_session_length(m_groupSession), '0');
QByteArray key = toKey(mode);
if (olm_pickle_outbound_group_session(m_groupSession, key.data(),
key.length(), pickledBuf.data(),
pickledBuf.length())
== olm_error())
return lastErrorCode();
key.clear();
return pickledBuf;
}
QOlmExpected<QOlmOutboundGroupSessionPtr> QOlmOutboundGroupSession::unpickle(const QByteArray &pickled, const PicklingMode &mode)
{
QByteArray pickledBuf = pickled;
auto *olmOutboundGroupSession = olm_outbound_group_session(new uint8_t[olm_outbound_group_session_size()]);
QByteArray key = toKey(mode);
if (olm_unpickle_outbound_group_session(olmOutboundGroupSession, key.data(),
key.length(), pickledBuf.data(),
pickledBuf.length())
== olm_error()) {
// FIXME: create the session object earlier and use lastError()
return olm_outbound_group_session_last_error_code(
olmOutboundGroupSession);
}
const auto idMaxLength = olm_outbound_group_session_id_length(olmOutboundGroupSession);
QByteArray idBuffer(idMaxLength, '0');
olm_outbound_group_session_id(olmOutboundGroupSession, reinterpret_cast<uint8_t *>(idBuffer.data()),
idBuffer.length());
key.clear();
return std::make_unique<QOlmOutboundGroupSession>(olmOutboundGroupSession);
}
QOlmExpected<QByteArray> QOlmOutboundGroupSession::encrypt(const QString &plaintext) const
{
QByteArray plaintextBuf = plaintext.toUtf8();
const auto messageMaxLength = olm_group_encrypt_message_length(m_groupSession, plaintextBuf.length());
QByteArray messageBuf(messageMaxLength, '0');
if (olm_group_encrypt(m_groupSession,
reinterpret_cast<uint8_t*>(plaintextBuf.data()),
plaintextBuf.length(),
reinterpret_cast<uint8_t*>(messageBuf.data()),
messageBuf.length())
== olm_error())
return lastErrorCode();
return messageBuf;
}
uint32_t QOlmOutboundGroupSession::sessionMessageIndex() const
{
return olm_outbound_group_session_message_index(m_groupSession);
}
QByteArray QOlmOutboundGroupSession::sessionId() const
{
const auto idMaxLength = olm_outbound_group_session_id_length(m_groupSession);
QByteArray idBuffer(idMaxLength, '0');
if (olm_outbound_group_session_id(
m_groupSession, reinterpret_cast<uint8_t*>(idBuffer.data()),
idBuffer.length())
== olm_error())
throw lastError();
return idBuffer;
}
QOlmExpected<QByteArray> QOlmOutboundGroupSession::sessionKey() const
{
const auto keyMaxLength = olm_outbound_group_session_key_length(m_groupSession);
QByteArray keyBuffer(keyMaxLength, '0');
if (olm_outbound_group_session_key(
m_groupSession, reinterpret_cast<uint8_t*>(keyBuffer.data()),
keyMaxLength)
== olm_error())
return lastErrorCode();
return keyBuffer;
}
int QOlmOutboundGroupSession::messageCount() const
{
return m_messageCount;
}
void QOlmOutboundGroupSession::setMessageCount(int messageCount)
{
m_messageCount = messageCount;
}
QDateTime QOlmOutboundGroupSession::creationTime() const
{
return m_creationTime;
}
void QOlmOutboundGroupSession::setCreationTime(const QDateTime& creationTime)
{
m_creationTime = creationTime;
}
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