arp.rar_ARP编程_NDIS 6.0 send arp_arp_rarp_short

// DLC Header typedef struct tagDLCHeader { unsigned char DesMAC[6]; /* destination HW addrress */ unsigned char SrcMAC[6]; /* source HW addresss */ unsigned short Ethertype; /* ethernet type */ } DLCHEADER, *PDLCHEADER; // ARP Frame typedef struct tagARPFrame { unsigned short HW_Type; /* hardware address */ unsigned short Prot_Type; /* protocol address */ unsigned char HW_Addr_Len; /* length of hardware address */ unsigned char Prot_Addr_Len; /* length of protocol address */ unsigned short Opcode; /* ARP/RARP */ unsigned char Send_HW_Addr[6]; /* sender hardware address */ unsigned long Send_Prot_Addr; /* sender protocol address */ unsigned char Targ_HW_Addr[6]; /* target hardware address */ unsigned long Targ_Prot_Addr; /* target protocol address */ unsigned char padding[18]; } ARPFRAME, *PARPFRAME; // ARP Packet = DLC header + ARP Frame typedef struct tagARPPacket { DLCHEADER dlcHeader; ARPFRAME arpFrame; } ARPPACKET, *PARPPACKET; void formatStrToMAC(const LPSTR lpHWAddrStr, unsigned char *HWAddr) //转换字符函数 { unsigned int i, index = 0, value, temp; unsigned char c; _strlwr(lpHWAddrStr); // 转换成小写 for (i = 0; i < strlen(lpHWAddrStr); i++) { c = *(lpHWAddrStr + i); if (( c>='0' && c<='9' ) || ( c>='a' && c<='f' )) { if (c>='0' && c<='9') temp = c - '0'; // 数字 if (c>='a' && c<='f') temp = c - 'a' + 0xa; // 字母 if ( (index % 2) == 1 ) { value = value*0x10 + temp; HWAddr[index/2] = value; } else value = temp; index++; } if (index == 12) break; } } ARPPACKET ARPPacket; // 定义ARPPACKET结构体变量 memset(&ARPPacket, 0, sizeof(ARPPACKET)); // 数据包初始化 formatStrToMAC("DLC源MAC字符串",ARPPacket.dlcHeader.SrcMAC); //DLC帧头 formatStrToMAC("DLC目的MAC字符串”,ARPPacket.dlcHeader.DesMAC); formatStrToMAC("ARP源MAC字符串",ARPPacket.arpFrame.Send_HW_Addr); // 源MAC ARPPacket.arpFrame.Send_Prot_Addr = inet_addr(srcIP); // 源IP formatStrToMAC("ARP目的MAC字符串",ARPPacket.arpFrame.Targ_HW_Addr); // 目的MAC ARPPacket.arpFrame.Targ_Prot_Addr = inet_addr(desIP); // 目的IP ARPPacket.arpFrame.Opcode = htons((unsigned short)arpType); // arp包类型 // 自动填充的常量 ARPPacket.dlcHeader.Ethertype = htons((unsigned short)0x0806); // DLC Header的以太网类型 ARPPacket.arpFrame.HW_Type = htons((unsigned short)1); // 硬件类型 ARPPacket.arpFrame.Prot_Type = htons((unsigned short)0x0800); // 上层协议类型 ARPPacket.arpFrame.HW_Addr_Len = (unsigned char)6; // MAC地址长度 ARPPacket.arpFrame.Prot_Addr_Len = (unsigned char)4; // IP地址长度