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SOCKET socketRaw;
// The WSAStartup function initiates use of WS2_32.DLL by a process.
bool initWSA()
{
bool tempo = true;
WSAData wsaData;
if (WSAStartup(MAKEWORD(2, 2), &wsaData) != 0)
{
tempo = false;
}
return tempo;
}
// The WSACleanup function terminates use of the WS2_32.DLL.
void clearWSA()
{
WSACleanup();
}
bool creat_Socket()
{
bool tempo = true;
socketRaw = WSASocket(AF_INET, SOCK_RAW, IPPROTO_ICMP, NULL, 0, 0);
if(socketRaw == INVALID_SOCKET)
{
tempo = false;
}
return tempo;
}
bool init_Socket()
{
bool tempo = true;
int sockOpt = 1;
int result;
// IPPROTO_IP IP_HDRINCL ==> Indique que l'IP header doit etre fourni par des données externes
if((result = setsockopt(socketRaw, IPPROTO_IP, IP_HDRINCL, (char*)&sockOpt, sizeof(sockOpt))) == SOCKET_ERROR)
{
tempo = false;
}
return tempo;
}
bool send_Socket(struct sockaddr_in sock_info, IP * ip, ICMP * icmp)
{
bool tempo = false;
int result;
char paquet[sizeof(ICMP) + sizeof(IP)]; //28 = sizeof(ICMP) + sizeof(IP)
createICMPpaquet(ip, icmp, paquet);
int t = sizeof(paquet);
result = sendto(socketRaw, paquet, sizeof(paquet), 0, (struct sockaddr *)&sock_info, sizeof(sock_info));
if(result != SOCKET_ERROR)
{
tempo = true;
}
return tempo;
}
void createICMPpaquet(IP *ip, ICMP *icmp, char * paquet)
{
int icmpT = sizeof(*icmp);
int ipT = sizeof(*ip);
ZeroMemory(paquet, icmpT + ipT); //permet de remplir un bloc de mémoire avec des 0
memcpy(paquet, ip, ipT);
paquet += ipT;
memcpy(paquet, icmp, icmpT);
} |
