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// SPDX-FileCopyrightText: 2021 Carl Schwan <carlschwan@kde.org>
//
// SPDX-License-Identifier: LGPL-2.1-or-later
#include "qolmoutboundsession.h"
#include "logging.h"
#include "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);
if (olm_init_outbound_group_session(olmOutboundGroupSession,
RandomBuffer(randomLength).bytes(),
randomLength)
== olm_error()) {
// FIXME: create the session object earlier
QOLM_INTERNAL_ERROR_X("Failed to initialise an outbound group session",
olm_outbound_group_session_last_error(
olmOutboundGroupSession));
}
// FIXME: is it used anywhere?
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);
return std::make_unique<QOlmOutboundGroupSession>(olmOutboundGroupSession);
}
QByteArray QOlmOutboundGroupSession::pickle(const PicklingMode &mode) const
{
QByteArray pickledBuf(
olm_pickle_outbound_group_session_length(m_groupSession), '\0');
auto key = toKey(mode);
if (olm_pickle_outbound_group_session(m_groupSession, key.data(),
key.length(), pickledBuf.data(),
pickledBuf.length())
== olm_error())
QOLM_INTERNAL_ERROR("Failed to pickle the outbound group session");
key.clear();
return pickledBuf;
}
QOlmExpected<QOlmOutboundGroupSessionPtr> QOlmOutboundGroupSession::unpickle(
QByteArray&& pickled, const PicklingMode& mode)
{
auto *olmOutboundGroupSession = olm_outbound_group_session(new uint8_t[olm_outbound_group_session_size()]);
auto key = toKey(mode);
if (olm_unpickle_outbound_group_session(olmOutboundGroupSession, key.data(),
key.length(), pickled.data(),
pickled.length())
== olm_error()) {
// FIXME: create the session object earlier and use lastError()
qWarning(E2EE) << "Failed to unpickle an outbound group session:"
<< olm_outbound_group_session_last_error(
olmOutboundGroupSession);
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());
// FIXME: idBuffer doesn't seem to be used, is it needed here?
key.clear();
return std::make_unique<QOlmOutboundGroupSession>(olmOutboundGroupSession);
}
QByteArray QOlmOutboundGroupSession::encrypt(const QByteArray& plaintext) const
{
const auto messageMaxLength =
olm_group_encrypt_message_length(m_groupSession, plaintext.length());
QByteArray messageBuf(messageMaxLength, '\0');
if (olm_group_encrypt(m_groupSession,
reinterpret_cast<const uint8_t*>(plaintext.data()),
plaintext.length(),
reinterpret_cast<uint8_t*>(messageBuf.data()),
messageBuf.length())
== olm_error())
QOLM_INTERNAL_ERROR("Failed to encrypt a message");
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())
QOLM_INTERNAL_ERROR("Failed to obtain group session id");
return idBuffer;
}
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())
QOLM_INTERNAL_ERROR("Failed to obtain group session key");
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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