packetchap.cpp

protocol

//---------------------------------------------------------------------------


#pragma hdrstop

#include "PacketCHAP.h"
#include "Functions.h"
//---------------------------------------------------------------------------

#pragma package(smart_init)
void PacketCHAPParser(unsigned char *p_data,int index,Layer layer,Sel *SelInfo,NodeInfo *nodes0,
  NodeInfo *nodes1,NodeInfo *nodes2,TTreeView *tvPacket,unsigned int datalength)
  {
    TTreeNode* mNodex;
    PACKET_CHAP PChap;

    mNodex = tvPacket->Items->Add(tvPacket->Selected,"CHAP ( Challenge Handshake Authentication Protocol )");
    nodes0->Node[layer.layer1] = mNodex;
    
    if((index+4)>datalength){
        tvPacket->Items->Add(tvPacket->Selected,"[ Malformed BAP packet. Remaining bytes don't fit an BAP packet. Possibly due to bad decoding ]");
        return;
    }

    SelInfo->Start1[layer.layer1] = index;
    PChap.Code = *(p_data+index);
    
    SelInfo->Start2[layer.layer1][0] = index;
    index += 1;
    SelInfo->End2[layer.layer1][0] = index;
    nodes1->Node[layer.layer2++] = tvPacket->Items->AddChild(mNodex,"Code                 : 0x"+IntToHex(PChap.Code,2)+" ( "+IntToStr(PChap.Code)+" ) ");
    
    PChap.Identifier = *(p_data+index);
    SelInfo->Start2[layer.layer1][1] = index;
    index += 1;
    SelInfo->End2[layer.layer1][1] = index;
    nodes1->Node[layer.layer2++] = tvPacket->Items->AddChild(mNodex,"Identifier           : 0x"+IntToHex(PChap.Identifier,2)+" ( "+IntToStr(PChap.Identifier)+" ) ");
    
    PChap.Length = Get2Bytes(p_data, index,1);
    SelInfo->Start2[layer.layer1][2] = index;
    index += 2;
    SelInfo->End2[layer.layer1][2] = index;
    nodes1->Node[layer.layer2++] = tvPacket->Items->AddChild(mNodex,"Length               : 0x"+IntToHex(PChap.Length,4)+" ( "+IntToStr(PChap.Length)+" ) ");
    
    SelInfo->Start2[layer.layer1][3] = index;
    index = datalength;
    SelInfo->End2[layer.layer1][3] = index;
    nodes1->Node[layer.layer2++] = tvPacket->Items->AddChild(mNodex,"Data");
    
    SelInfo->End1[layer.layer1] = index; 
}