EXEMPLE DE RAW SOCKET SOUS LINUX

#include <stdio.h>
#include "proto.h"


int main(int argc, char **argv)
{
	int sock = socket(PF_INET,SOCK_RAW,IPPROTO_TCP);
	char packet[4096];
	struct sockaddr_in sin;
	char c = 0;
	char *src = NULL, *dest = NULL;
	int port = 0;
	
	while((c = getopt(argc,argv,"s:d:p:h")) != -1)
	{
		switch(c)
		{
			case 's':
				src = optarg;
				printf("\\nIP source:\\t\\t%s",src);
				break;
			case 'd':
				dest = optarg;
				printf("\\nIP de destination:\\t\\t%s",dest);
				break;
			case 'p':
				port = atoi(optarg);
				printf("\\nPort:\\t\\t%d",port);
				break;
			case 'h':
			case '?':
				printf(VERSION"Usage:\\n\\t-s\\tAdresse IP source\\n\\t-d\\tAdresse IP de destination\\n\\t-p\\tNuméro de port\\n");
				exit(0);
			break;
		}
	}
	
	if((port <= 0) || (src == NULL) || (dest == NULL)) 
	{
		printf(VERSION"Usage:\\n\\t-s\\tAdresse IP source\\n\\t-d\\tAdresse IP de destination\\n\\t-p\\tNuméro de port\\n");
		exit(0);
	}
	
	sin.sin_family = AF_INET;
	sin.sin_port = htons (port);
	sin.sin_addr.s_addr = inet_addr (dest);
	
	memset (packet, 0, 4096);
	
	struct ip *iph = (struct ip *) packet;
	struct tcphdr *tcph = (struct tcphdr *) (packet + sizeof(struct ip));
	
	create_iph(iph,src,dest,sizeof(struct ip)+sizeof(struct tcphdr)+0,6);
	create_tcp_rst(tcph,port,src,dest,0);
	
	set_socket(sock);
	
	while(1)
	{

		sendto (sock,packet,IPHDR+TCPHDR,0,(struct sockaddr *) &sin,sizeof (sin));
		create_tcp_rst(tcph,port,src,dest,0);
	}
	
	return 0;
}

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