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// SPDX-FileCopyrightText: 2021 Carl Schwan <carlschwan@kde.org>
//
// SPDX-License-Identifier: LGPL-2.1-or-later
#include "qolminboundsession.h"
#include "qolmutils.h"
#include "../logging.h"
#include <cstring>
#include <iostream>
#include <olm/olm.h>
using namespace Quotient;
OlmErrorCode QOlmInboundGroupSession::lastErrorCode() const {
return olm_inbound_group_session_last_error_code(m_groupSession);
}
const char* QOlmInboundGroupSession::lastError() const
{
return olm_inbound_group_session_last_error(m_groupSession);
}
QOlmInboundGroupSession::QOlmInboundGroupSession(OlmInboundGroupSession *session)
: m_groupSession(session)
{}
QOlmInboundGroupSession::~QOlmInboundGroupSession()
{
olm_clear_inbound_group_session(m_groupSession);
//delete[](reinterpret_cast<uint8_t *>(m_groupSession));
}
QOlmExpected<QOlmInboundGroupSessionPtr> QOlmInboundGroupSession::create(
const QByteArray& key)
{
const auto olmInboundGroupSession = olm_inbound_group_session(new uint8_t[olm_inbound_group_session_size()]);
if (olm_init_inbound_group_session(
olmInboundGroupSession,
reinterpret_cast<const uint8_t*>(key.constData()), key.size())
== olm_error()) {
// FIXME: create QOlmInboundGroupSession earlier and use lastErrorCode()
qWarning(E2EE) << "Failed to create an inbound group session:"
<< olm_inbound_group_session_last_error(
olmInboundGroupSession);
return olm_inbound_group_session_last_error_code(olmInboundGroupSession);
}
return std::make_unique<QOlmInboundGroupSession>(olmInboundGroupSession);
}
QOlmExpected<QOlmInboundGroupSessionPtr> QOlmInboundGroupSession::importSession(
const QByteArray& key)
{
const auto olmInboundGroupSession = olm_inbound_group_session(new uint8_t[olm_inbound_group_session_size()]);
if (olm_import_inbound_group_session(
olmInboundGroupSession,
reinterpret_cast<const uint8_t*>(key.data()), key.size())
== olm_error()) {
// FIXME: create QOlmInboundGroupSession earlier and use lastError()
qWarning(E2EE) << "Failed to import an inbound group session:"
<< olm_inbound_group_session_last_error(
olmInboundGroupSession);
return olm_inbound_group_session_last_error_code(olmInboundGroupSession);
}
return std::make_unique<QOlmInboundGroupSession>(olmInboundGroupSession);
}
QByteArray QOlmInboundGroupSession::pickle(const PicklingMode& mode) const
{
QByteArray pickledBuf(
olm_pickle_inbound_group_session_length(m_groupSession), '\0');
if (const auto key = toKey(mode);
olm_pickle_inbound_group_session(m_groupSession, key.data(),
key.length(), pickledBuf.data(),
pickledBuf.length())
== olm_error()) {
QOLM_INTERNAL_ERROR("Failed to pickle the inbound group session");
}
return pickledBuf;
}
QOlmExpected<QOlmInboundGroupSessionPtr> QOlmInboundGroupSession::unpickle(
QByteArray&& pickled, const PicklingMode& mode)
{
const auto groupSession = olm_inbound_group_session(new uint8_t[olm_inbound_group_session_size()]);
auto key = toKey(mode);
if (olm_unpickle_inbound_group_session(groupSession, key.data(),
key.length(), pickled.data(),
pickled.size())
== olm_error()) {
// FIXME: create QOlmInboundGroupSession earlier and use lastError()
qWarning(E2EE) << "Failed to unpickle an inbound group session:"
<< olm_inbound_group_session_last_error(groupSession);
return olm_inbound_group_session_last_error_code(groupSession);
}
key.clear();
return std::make_unique<QOlmInboundGroupSession>(groupSession);
}
QOlmExpected<std::pair<QByteArray, uint32_t>> QOlmInboundGroupSession::decrypt(
const QByteArray& message)
{
// This is for capturing the output of olm_group_decrypt
uint32_t messageIndex = 0;
// We need to clone the message because
// olm_decrypt_max_plaintext_length destroys the input buffer
QByteArray messageBuf(message.length(), '\0');
std::copy(message.begin(), message.end(), messageBuf.begin());
QByteArray plaintextBuf(olm_group_decrypt_max_plaintext_length(
m_groupSession,
reinterpret_cast<uint8_t*>(messageBuf.data()),
messageBuf.length()),
'\0');
messageBuf = QByteArray(message.length(), '\0');
std::copy(message.begin(), message.end(), messageBuf.begin());
const auto plaintextLen = olm_group_decrypt(m_groupSession, reinterpret_cast<uint8_t *>(messageBuf.data()),
messageBuf.length(), reinterpret_cast<uint8_t *>(plaintextBuf.data()), plaintextBuf.length(), &messageIndex);
if (plaintextLen == olm_error()) {
qWarning(E2EE) << "Failed to decrypt the message:" << lastError();
return lastErrorCode();
}
QByteArray output(plaintextLen, '\0');
std::memcpy(output.data(), plaintextBuf.data(), plaintextLen);
return std::make_pair(output, messageIndex);
}
QOlmExpected<QByteArray> QOlmInboundGroupSession::exportSession(
uint32_t messageIndex)
{
const auto keyLength = olm_export_inbound_group_session_length(m_groupSession);
QByteArray keyBuf(keyLength, '\0');
if (olm_export_inbound_group_session(
m_groupSession, reinterpret_cast<uint8_t*>(keyBuf.data()),
keyLength, messageIndex)
== olm_error()) {
QOLM_FAIL_OR_LOG(OLM_OUTPUT_BUFFER_TOO_SMALL,
"Failed to export the inbound group session");
return lastErrorCode();
}
return keyBuf;
}
uint32_t QOlmInboundGroupSession::firstKnownIndex() const
{
return olm_inbound_group_session_first_known_index(m_groupSession);
}
QByteArray QOlmInboundGroupSession::sessionId() const
{
QByteArray sessionIdBuf(olm_inbound_group_session_id_length(m_groupSession),
'\0');
if (olm_inbound_group_session_id(
m_groupSession, reinterpret_cast<uint8_t*>(sessionIdBuf.data()),
sessionIdBuf.length())
== olm_error())
QOLM_INTERNAL_ERROR("Failed to obtain the group session id");
return sessionIdBuf;
}
bool QOlmInboundGroupSession::isVerified() const
{
return olm_inbound_group_session_is_verified(m_groupSession) != 0;
}
QString QOlmInboundGroupSession::olmSessionId() const
{
return m_olmSessionId;
}
void QOlmInboundGroupSession::setOlmSessionId(const QString& newOlmSessionId)
{
m_olmSessionId = newOlmSessionId;
}
QString QOlmInboundGroupSession::senderId() const
{
return m_senderId;
}
void QOlmInboundGroupSession::setSenderId(const QString& senderId)
{
m_senderId = senderId;
}
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