void SshIncomingPacket::consumeData(QByteArray &newData)
{
#ifdef CREATOR_SSH_DEBUG
qDebug("%s: current data size = %d, new data size = %d",
Q_FUNC_INFO, m_data.size(), newData.size());
#endif
if (isComplete() || newData.isEmpty())
return;
/*
* Until we have reached the minimum packet size, we cannot decrypt the
* length field.
*/
const quint32 minSize = minPacketSize();
if (currentDataSize() < minSize) {
const int bytesToTake
= qMin<quint32>(minSize - currentDataSize(), newData.size());
moveFirstBytes(m_data, newData, bytesToTake);
#ifdef CREATOR_SSH_DEBUG
qDebug("Took %d bytes from new data", bytesToTake);
#endif
if (currentDataSize() < minSize)
return;
}
if (4 + length() + macLength() < currentDataSize())
throw SSH_SERVER_EXCEPTION(SSH_DISCONNECT_PROTOCOL_ERROR, "Server sent invalid packet.");
const int bytesToTake
= qMin<quint32>(length() + 4 + macLength() - currentDataSize(),
newData.size());
moveFirstBytes(m_data, newData, bytesToTake);
#ifdef CREATOR_SSH_DEBUG
qDebug("Took %d bytes from new data", bytesToTake);
#endif
if (isComplete()) {
#ifdef CREATOR_SSH_DEBUG
qDebug("Message complete. Overall size: %u, payload size: %u",
m_data.size(), m_length - paddingLength() - 1);
#endif
decrypt();
++m_serverSeqNr;
}
}
void SftpIncomingPacket::consumeData(QByteArray &newData)
{
#ifdef CREATOR_SSH_DEBUG
qDebug("%s: current data size = %d, new data size = %d", Q_FUNC_INFO,
m_data.size(), newData.size());
#endif
if (isComplete() || dataSize() + newData.size() < sizeof m_length)
return;
if (dataSize() < sizeof m_length) {
moveFirstBytes(m_data, newData, sizeof m_length - m_data.size());
m_length = SshPacketParser::asUint32(m_data, static_cast<quint32>(0));
if (m_length < static_cast<quint32>(TypeOffset + 1)
|| m_length > MaxPacketSize) {
throw SSH_SERVER_EXCEPTION(SSH_DISCONNECT_PROTOCOL_ERROR,
"Invalid length field in SFTP packet.");
}
}
moveFirstBytes(m_data, newData,
qMin<quint32>(m_length - dataSize() + 4, newData.size()));
}
