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//------------------------------------------------------------------------------
// Author: Andrey Kuznetsov
// Description: Helpers for parsing CIFS structures.
// Copyright (c) 2014 EPAM Systems
//------------------------------------------------------------------------------
/*
This file is part of Nfstrace.
Nfstrace is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, version 2 of the License.
Nfstrace is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Nfstrace. If not, see <http://www.gnu.org/licenses/>.
*/
//------------------------------------------------------------------------------
#include <cassert>
#include <arpa/inet.h>
#include <assert.h>
#include "api/cifs_pc_to_net.h"
#include "api/plugin_api.h" // for NST_PUBLIC
#include "protocols/cifs/cifs.h"
#include "protocols/cifs2/cifs2.h"
//------------------------------------------------------------------------------
using namespace NST::protocols::CIFSv2;
#if NFSTRACE_BYTE_ORDER == NFSTRACE_BIG_ENDIAN
inline uint64_t ntohll(uint64_t input)
{
// Network byte order == Big Endian
return input;
}
#else
#if NFSTRACE_BYTE_ORDER == NFSTRACE_LITTLE_ENDIAN
inline uint64_t ntohll(uint64_t input)
{
return be64toh(input);
}
#endif
#endif
union SMBCode {
uint8_t codes[4];
uint32_t code;
};
static inline uint32_t get_code()
{
SMBCode code;
code.codes[0] = static_cast<uint8_t>(NST::protocols::CIFSv1::ProtocolCodes::SMB2);
code.codes[1] = 'S';
code.codes[2] = 'M';
code.codes[3] = 'B';
return code.code;
}
const NST::protocols::CIFSv2::MessageHeader* NST::protocols::CIFSv2::get_header(const uint8_t* data)
{
static uint32_t code = get_code();
const MessageHeader* header(reinterpret_cast<const MessageHeader*>(data));
if(header->head_code == code)
{
return header;
}
return nullptr;
}
bool MessageHeader::isFlag(const Flags flag) const
{
return static_cast<uint32_t>(flag) & flags;
}
void NST::protocols::CIFSv2::parseGuid(uint8_t (&guid)[16])
{
Guid& p = reinterpret_cast<Guid&>(guid);
p.Data1 = le32toh(p.Data1);
p.Data2 = le16toh(p.Data2);
p.Data3 = le16toh(p.Data3);
}
void NST::protocols::CIFSv2::parse(SMBv2::ErrResponse*&)
{
}
void NST::protocols::CIFSv2::parse(SMBv2::NegotiateRequest*& p)
{
parseGuid(p->clientGUID);
}
void NST::protocols::CIFSv2::parse(SMBv2::NegotiateResponse*& p)
{
parseGuid(p->serverGUID);
}
// clang-format off
void NST::protocols::CIFSv2::parse(SMBv2::SessionSetupRequest*&){ }
void NST::protocols::CIFSv2::parse(SMBv2::SessionSetupResponse*&) { }
void NST::protocols::CIFSv2::parse(SMBv2::LogOffRequest*&) { }
void NST::protocols::CIFSv2::parse(SMBv2::LogOffResponse*&) { }
void NST::protocols::CIFSv2::parse(SMBv2::TreeConnectRequest*&) { }
void NST::protocols::CIFSv2::parse(SMBv2::TreeConnectResponse*&) { }
void NST::protocols::CIFSv2::parse(SMBv2::TreeDisconnectRequest*&) { }
void NST::protocols::CIFSv2::parse(SMBv2::TreeDisconnectResponse*&) { }
void NST::protocols::CIFSv2::parse(SMBv2::CreateRequest*&) { }
void NST::protocols::CIFSv2::parse(SMBv2::CreateResponse*&) { }
void NST::protocols::CIFSv2::parse(SMBv2::CloseRequest*&) { }
void NST::protocols::CIFSv2::parse(SMBv2::CloseResponse*&) { }
void NST::protocols::CIFSv2::parse(SMBv2::EchoRequest*&) { }
void NST::protocols::CIFSv2::parse(SMBv2::EchoResponse*&) { }
void NST::protocols::CIFSv2::parse(SMBv2::QueryInfoRequest*&) { }
void NST::protocols::CIFSv2::parse(SMBv2::QueryInfoResponse*&) { }
void NST::protocols::CIFSv2::parse(SMBv2::QueryDirRequest*&) { }
void NST::protocols::CIFSv2::parse(SMBv2::QueryDirResponse*&){ }
void NST::protocols::CIFSv2::parse(SMBv2::FlushRequest*&) { }
void NST::protocols::CIFSv2::parse(SMBv2::FlushResponse*&) { }
void NST::protocols::CIFSv2::parse(SMBv2::ReadRequest*&) { }
void NST::protocols::CIFSv2::parse(SMBv2::ReadResponse*&) { }
void NST::protocols::CIFSv2::parse(SMBv2::Lock*&) { }
void NST::protocols::CIFSv2::parse(SMBv2::WriteRequest*&) { }
void NST::protocols::CIFSv2::parse(SMBv2::WriteResponse*&) { }
void NST::protocols::CIFSv2::parse(SMBv2::LockRequest*&) { }
void NST::protocols::CIFSv2::parse(SMBv2::LockResponse*&) { }
void NST::protocols::CIFSv2::parse(SMBv2::ChangeNotifyRequest*&){ }
void NST::protocols::CIFSv2::parse(SMBv2::FileNotifyInformation*&){ }
void NST::protocols::CIFSv2::parse(SMBv2::ChangeNotifyResponse*&){ }
void NST::protocols::CIFSv2::parse(SMBv2::OplockAcknowledgment*&){ }
void NST::protocols::CIFSv2::parse(SMBv2::OplockResponse*&){ }
void NST::protocols::CIFSv2::parse(SMBv2::IoCtlRequest*&){ }
void NST::protocols::CIFSv2::parse(SMBv2::IoCtlResponse*&){ }
void NST::protocols::CIFSv2::parse(SMBv2::SetInfoRequest*&){ }
void NST::protocols::CIFSv2::parse(SMBv2::SetInfoResponse*&){ }
void NST::protocols::CIFSv2::parse(SMBv2::CancelResponce*&){ }
void NST::protocols::CIFSv2::parse(SMBv2::CancelRequest*&){ }
// clang-format on
// TODO: This implementation currently copy of
// epm-nfs/analyzers/src/cifs/cifs2_commands.cpp
// const std::string NST::breakdown::SMBv2Commands::command_name(int cmd_code)
// Futre fix: We need to merege these enums
// TODO: Move implementation to some common module
extern "C" NST_PUBLIC const char* print_cifs2_procedures(SMBv2Commands cmd)
{
assert(cmd < SMBv2Commands::CMD_COUNT);
// clang-format off
static const char* const commandNames[] =
{
"NEGOTIATE", "SESSION SETUP", "LOGOFF", "TREE CONNECT",
"TREE DISCONNECT", "CREATE", "CLOSE", "FLUSH",
"READ", "WRITE", "LOCK", "IOCTL",
"CANCEL", "ECHO", "QUERY DIRECTORY", "CHANGE NOTIFY",
"QUERY INFO", "SET INFO", "OPLOCK BREAK"
};
// clang-format on
return commandNames[static_cast<int>(cmd)];
}
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