/
IPXMenic.cpp
362 lines (307 loc) · 8.63 KB
/
IPXMenic.cpp
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#include "IPXMenic.h"
IPXMenic::IPXMenic(TiXmlElement *filter_params, TiXmlElement *change_params, vector<vector<unsigned char>> packets, vector<vector<unsigned char>> *filtered)
{
this->filter_params = filter_params;
this->change_params = change_params;
this->packets = packets;
this->filtered = filtered;
}
unsigned char IPXMenic::getNumOfProtocol(string type)
{
if (!strcmp(type.c_str(), "Unknown"))
return 0x00;
else if (!strcmp(type.c_str(), "RIP"))
return 0x01;
else if (!strcmp(type.c_str(), "Echo"))
return 0x02;
else if (!strcmp(type.c_str(), "PEP"))
return 0x04;
else if (!strcmp(type.c_str(), "SPX"))
return 0x05;
else if (!strcmp(type.c_str(), "NCP"))
return 0x11;
return 0x00;
}
void IPXMenic::changeIPXPacket(vector<unsigned char> *actualPacket)
{
int tmp;
if (!changeSrcMAC.empty())
{
for (int i = 0; i < 6; i++)
{
tmp = (unsigned char)stoi(changeSrcMAC.substr(i * 3, 2).c_str(), 0, 16);
actualPacket->at(i) = tmp;
}
}
if (!changeDstMAC.empty())
{
for (int i = 0; i < 6; i++)
{
tmp = (unsigned char)stoi(changeDstMAC.substr(i * 3, 2).c_str(), 0, 16);
actualPacket->at(i + 6) = tmp;
}
}
if (!changetransControl.empty())
{
actualPacket->at(18) = (unsigned char)stoi(type, 0, 16);
}
if (!changeType.empty())
{
tmp = getNumOfProtocol(changeType);
actualPacket->at(19) = tmp;
}
if (!changeDstNetwork.empty())
{
for (int i = 0; i < 4; i++)
{
tmp = (unsigned char)stoi(changeDstNetwork.substr(i * 3, 2).c_str(), 0, 16);
actualPacket->at(20 + i) = tmp;
}
}
if (!changeDstNode.empty())
{
for (int i = 0; i < 4; i++)
{
tmp = (unsigned char)stoi(changeDstNode.substr(i * 3, 2).c_str(), 0, 16);
actualPacket->at(24 + i) = tmp;
}
}
if (!changeDstSocket.empty())
{
actualPacket->at(30) = stoi(changeDstSocket.substr(0, 2).c_str(), 0, 16);
actualPacket->at(31) = stoi(changeDstSocket.substr(3, 2).c_str(), 0, 16);
}
if (!changeSrcNetwork.empty())
{
for (int i = 0; i < 4; i++)
{
tmp = (unsigned char)stoi(changeSrcNetwork.substr(i * 3, 2).c_str(), 0, 16);
actualPacket->at(32 + i) = tmp;
}
}
if (!changeSrcNode.empty())
{
for (int i = 0; i < 6; i++)
{
tmp = (unsigned char)stoi(changeSrcNode.substr(i * 3, 2).c_str(), 0, 16);
actualPacket->at(36 + i) = tmp;
}
}
if (!changeSrcSocket.empty())
{
actualPacket->at(42) = stoi(changeSrcSocket.substr(0, 2).c_str(), 0, 16);
actualPacket->at(43) = stoi(changeSrcSocket.substr(3, 2).c_str(), 0, 16);
}
}
bool IPXMenic::checkSrcMAC(vector<unsigned char> actualPacket)
{
int tmp;
if (SrcMAC.empty())
return true;
for (int i = 0; i < 6; i++)
{
tmp = (unsigned char)stoi(SrcMAC.substr(i * 3, 2).c_str(), 0, 16);
if (tmp != actualPacket[i])
return false;
}
return true;
}
bool IPXMenic::checkDstMAC(vector<unsigned char> actualPacket)
{
int tmp;
if (DstMAC.empty())
return true;
for (int i = 0; i < 6; i++)
{
tmp = (unsigned char)stoi(DstMAC.substr(i * 3, 2).c_str(), 0, 16);
if (tmp != actualPacket[i + 6])
return false;
}
return true;
}
bool IPXMenic::checkParams(vector<unsigned char> actualPacket)
{
return (checkSrcMAC(actualPacket) && checkDstMAC(actualPacket) &&
checkTransControl(actualPacket) && checkType(actualPacket) &&
checkSrcNetwork(actualPacket) && checkSrcNode(actualPacket) &&
checkSrcSocket(actualPacket) && checkDstNetwork(actualPacket) &&
checkDstNode(actualPacket) && checkDstSocket(actualPacket));
}
bool IPXMenic::checkTransControl(vector<unsigned char> actualPacket)
{
if (transControl.empty())
return true;
if (actualPacket[18] == stoi(transControl.c_str(), 0, 16));
return true;
return false;
}
bool IPXMenic::checkType(vector<unsigned char> actualPacket)
{
unsigned char tmp;
if (type.empty())
return true;
tmp = getNumOfProtocol(type);
if (actualPacket[19] == tmp);
return true;
return false;
}
bool IPXMenic::checkDstNetwork(vector<unsigned char> actualPacket)
{
int tmp;
if (DstNetwork.empty())
return true;
for (int i = 0; i < 4; i++)
{
tmp = (unsigned char)stoi(DstNetwork.substr(i * 3, 2).c_str(), 0, 16);
if (tmp != actualPacket[20 + i])
return false;
}
return true;
}
bool IPXMenic::checkDstNode(vector<unsigned char> actualPacket)
{
int tmp;
if (DstNode.empty())
return true;
for (int i = 0; i < 4; i++)
{
tmp = (unsigned char)stoi(DstNode.substr(i * 3, 2).c_str(), 0, 16);
if (tmp != actualPacket[24 + i])
return false;
}
return true;
}
bool IPXMenic::checkDstSocket(vector<unsigned char> actualPacket)
{
if (DstSocket.empty())
return true;
return ((actualPacket[30] == stoi(DstSocket.substr(0, 2).c_str(), 0, 16)) &&
(actualPacket[31] == stoi(DstSocket.substr(3, 2).c_str(), 0, 16)));
}
bool IPXMenic::checkSrcNetwork(vector<unsigned char> actualPacket)
{
int tmp;
if (SrcNetwork.empty())
return true;
for (int i = 0; i < 4; i++)
{
tmp = (unsigned char)stoi(SrcNetwork.substr(i * 3, 2).c_str(), 0, 16);
if (tmp != actualPacket[32 + i])
return false;
}
return true;
}
bool IPXMenic::checkSrcNode(vector<unsigned char> actualPacket)
{
int tmp;
if (SrcNode.empty())
return true;
for (int i = 0; i < 6; i++)
{
tmp = (unsigned char)stoi(SrcNode.substr(i * 3, 2).c_str(), 0, 16);
if (tmp != actualPacket[36 + i])
return false;
}
return true;
}
bool IPXMenic::checkSrcSocket(vector<unsigned char> actualPacket)
{
if (SrcSocket.empty())
return true;
return ((actualPacket[42] == stoi(SrcSocket.substr(0, 2).c_str(), 0, 16)) &&
(actualPacket[43] == stoi(SrcSocket.substr(3, 2).c_str(), 0, 16)));
}
void IPXMenic::filterIPXPackets()
{
vector<unsigned char> actualPacket;
int i;
for (i = 0; i < packets.size(); i++)
{
actualPacket = packets[i];
if ((actualPacket[14] == 0xFF) && (actualPacket[15] == 0xFF) &&
checkParams(actualPacket))
{
changeIPXPacket(&actualPacket);
filtered->push_back(actualPacket);
}
}
}
void IPXMenic::getIPXChangeParams()
{
TiXmlElement *element;
element = change_params->FirstChildElement("local_mac_address");
if (element != NULL)
changeSrcMAC = element->GetText();
element = change_params->FirstChildElement("remote_mac_address");
if (element != NULL)
changeDstMAC = element->GetText();
element = change_params->FirstChildElement("transport_control");
if (element != NULL)
changetransControl = element->GetText();
element = change_params->FirstChildElement("protocol_type");
if (element != NULL)
changeType = element->GetText();
element = change_params->FirstChildElement("remote_net_address");
if (element != NULL)
changeDstNetwork = element->GetText();
element = change_params->FirstChildElement("remote_mac_address");
if (element != NULL)
changeDstNode = element->GetText();
element = change_params->FirstChildElement("remote_socket_address");
if (element != NULL)
changeDstSocket = element->GetText();
/*********************************************************************/
element = change_params->FirstChildElement("local_net_address");
if (element != NULL)
changeSrcNetwork = element->GetText();
element = change_params->FirstChildElement("local_mac_address");
if (element != NULL)
changeSrcNode = element->GetText();
element = change_params->FirstChildElement("local_socket_address");
if (element != NULL)
changeSrcSocket = element->GetText();
}
void IPXMenic::getIPXFilteringParams()
{
TiXmlElement *element;
element = filter_params->FirstChildElement("local_mac_address");
if (element != NULL)
SrcMAC = element->GetText();
element = filter_params->FirstChildElement("remote_mac_address");
if (element != NULL)
DstMAC = element->GetText();
element = filter_params->FirstChildElement("transport_control");
if (element != NULL)
transControl = element->GetText();
element = filter_params->FirstChildElement("protocol_type");
if (element != NULL)
type = element->GetText();
element = filter_params->FirstChildElement("remote_net_address");
if (element != NULL)
DstNetwork = element->GetText();
element = filter_params->FirstChildElement("remote_mac_address");
if (element != NULL)
DstNode = element->GetText();
element = filter_params->FirstChildElement("remote_socket_address");
if (element != NULL)
DstSocket = element->GetText();
/*********************************************************************/
element = filter_params->FirstChildElement("local_net_address");
if (element != NULL)
SrcNetwork = element->GetText();
element = filter_params->FirstChildElement("local_mac_address");
if (element != NULL)
SrcNode = element->GetText();
element = filter_params->FirstChildElement("local_socket_address");
if (element != NULL)
SrcSocket = element->GetText();
}
void IPXMenic::performFiltering()
{
getIPXFilteringParams();
getIPXChangeParams();
filterIPXPackets();
}
IPXMenic::~IPXMenic()
{
}