zhaojin518的专栏

抓取用户收发的邮件数据 ULONG nReceived = pCard->m_pkt_header->caplen; char *buffer = (char*)pCard->m_pkt_data; UINT offset = 0; UINT nDataLen = 0; UINT nCaptLen = 0; UCHAR sSource[4] ; UCHAR sDest[4]; ULONG nLong; UCHAR fromMAC[6] = {0}; UCHAR toMAC[6] = {0}; ETHERNET_HEADER *pEthernet = (ETHERNET_HEADER*)(buffer+offset); // 1st 6 bytes destination memcpy( toMAC, pEthernet->EthDHost, 6 ); // following 6 bytes source memcpy( fromMAC, pEthernet->EthSHost, 6 ); // VLAN if( pEthernet->EthType == 0x81 ) { offset += 4; } else if ( pEthernet->EthType != 0x8 && pEthernet->EthType != 0x800 ) { if( toMAC[0] == 0x1 && toMAC[1] == 0x00 && toMAC[2] == 0xc && toMAC[3] == 0xcc && toMAC[4] == 0xcc && toMAC[5] == 0xcc ) { // WriteDebugData( "CDP", buffer, nReceived ); } return; } PIP_HEADER pIp = (PIP_HEADER)(buffer+offset+sizeof(ETHERNET_HEADER)); nLong = pIp->SrcAddr; memcpy( sSource, &nLong, 4 ); nLong = pIp->DestAddr; memcpy( sDest, &nLong, 4 ); switch( pIp->Protocol ) { case 0x06:

C++编程惯用法 高级程序员常用方法和技巧

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