| Current Path : /usr/src/contrib/telnet/telnet/ |
FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
| Current File : //usr/src/contrib/telnet/telnet/main.c |
/*
* Copyright (c) 1988, 1990, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#if 0
#ifndef lint
static const char sccsid[] = "@(#)main.c 8.3 (Berkeley) 5/30/95";
#endif
#endif
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: release/9.1.0/contrib/telnet/telnet/main.c 139937 2005-01-09 10:24:46Z maxim $");
#include <sys/param.h>
#include <sys/socket.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "ring.h"
#include "externs.h"
#include "defines.h"
#ifdef AUTHENTICATION
#include <libtelnet/auth.h>
#endif
#ifdef ENCRYPTION
#include <libtelnet/encrypt.h>
#endif
/* These values need to be the same as defined in libtelnet/kerberos5.c */
/* Either define them in both places, or put in some common header file. */
#define OPTS_FORWARD_CREDS 0x00000002
#define OPTS_FORWARDABLE_CREDS 0x00000001
#if defined(IPSEC) && defined(IPSEC_POLICY_IPSEC)
char *ipsec_policy_in = NULL;
char *ipsec_policy_out = NULL;
#endif
extern int tos;
int family = AF_UNSPEC;
/*
* Initialize variables.
*/
void
tninit(void)
{
init_terminal();
init_network();
init_telnet();
init_sys();
}
static void
usage(void)
{
fprintf(stderr, "usage: %s %s%s%s%s\n",
prompt,
#ifdef AUTHENTICATION
"[-4] [-6] [-8] [-E] [-K] [-L] [-N] [-S tos] [-X atype] [-c] [-d]",
"\n\t[-e char] [-k realm] [-l user] [-f/-F] [-n tracefile] ",
#else
"[-4] [-6] [-8] [-E] [-L] [-N] [-S tos] [-c] [-d]",
"\n\t[-e char] [-l user] [-n tracefile] ",
#endif
"[-r] [-s src_addr] [-u] ",
#if defined(IPSEC) && defined(IPSEC_POLICY_IPSEC)
"[-P policy] "
#endif
#ifdef ENCRYPTION
"[-y] [host-name [port]]"
#else /* ENCRYPTION */
"[host-name [port]]"
#endif /* ENCRYPTION */
);
exit(1);
}
/*
* main. Parse arguments, invoke the protocol or command parser.
*/
int
main(int argc, char *argv[])
{
u_long ultmp;
int ch;
char *ep, *user;
char *src_addr = NULL;
#ifdef FORWARD
extern int forward_flags;
#endif /* FORWARD */
tninit(); /* Clear out things */
TerminalSaveState();
if ((prompt = strrchr(argv[0], '/')))
++prompt;
else
prompt = argv[0];
user = NULL;
rlogin = (strncmp(prompt, "rlog", 4) == 0) ? '~' : _POSIX_VDISABLE;
#ifdef AUTHENTICATION
autologin = 1;
#else
autologin = -1;
#endif
#ifdef ENCRYPTION
encrypt_auto(1);
decrypt_auto(1);
#endif
#if defined(IPSEC) && defined(IPSEC_POLICY_IPSEC)
#define IPSECOPT "P:"
#else
#define IPSECOPT
#endif
while ((ch = getopt(argc, argv,
"468EKLNS:X:acde:fFk:l:n:rs:uxy" IPSECOPT)) != -1)
#undef IPSECOPT
{
switch(ch) {
case '4':
family = AF_INET;
break;
#ifdef INET6
case '6':
family = AF_INET6;
break;
#endif
case '8':
eight = 3; /* binary output and input */
break;
case 'E':
rlogin = escape = _POSIX_VDISABLE;
break;
case 'K':
#ifdef AUTHENTICATION
autologin = 0;
#endif
break;
case 'L':
eight |= 2; /* binary output only */
break;
case 'N':
doaddrlookup = 0;
break;
case 'S':
#ifdef HAS_GETTOS
if ((tos = parsetos(optarg, "tcp")) < 0)
fprintf(stderr, "%s%s%s%s\n",
prompt, ": Bad TOS argument '",
optarg,
"; will try to use default TOS");
#else
#define MAXTOS 255
ultmp = strtoul(optarg, &ep, 0);
if (*ep || ep == optarg || ultmp > MAXTOS)
fprintf(stderr, "%s%s%s%s\n",
prompt, ": Bad TOS argument '",
optarg,
"; will try to use default TOS");
else
tos = ultmp;
#endif
break;
case 'X':
#ifdef AUTHENTICATION
auth_disable_name(optarg);
#endif
break;
case 'a':
#ifdef AUTHENTICATION
/* It's the default now, so ignore */
#else
autologin = 1;
#endif
break;
case 'c':
skiprc = 1;
break;
case 'd':
telnet_debug = 1;
break;
case 'e':
set_escape_char(optarg);
break;
case 'f':
#ifdef AUTHENTICATION
#if defined(KRB5) && defined(FORWARD)
if (forward_flags & OPTS_FORWARD_CREDS) {
fprintf(stderr,
"%s: Only one of -f and -F allowed.\n",
prompt);
usage();
}
forward_flags |= OPTS_FORWARD_CREDS;
#else
fprintf(stderr,
"%s: Warning: -f ignored, no Kerberos V5 support.\n",
prompt);
#endif
#else
fprintf(stderr,
"%s: Warning: -f ignored, no Kerberos V5 support.\n",
prompt);
#endif
break;
case 'F':
#ifdef AUTHENTICATION
#if defined(KRB5) && defined(FORWARD)
if (forward_flags & OPTS_FORWARD_CREDS) {
fprintf(stderr,
"%s: Only one of -f and -F allowed.\n",
prompt);
usage();
}
forward_flags |= OPTS_FORWARD_CREDS;
forward_flags |= OPTS_FORWARDABLE_CREDS;
#else
fprintf(stderr,
"%s: Warning: -F ignored, no Kerberos V5 support.\n",
prompt);
#endif
#else
fprintf(stderr,
"%s: Warning: -F ignored, no Kerberos V5 support.\n",
prompt);
#endif
break;
case 'k':
#ifdef AUTHENTICATION
#if defined(KRB4)
{
extern char *dest_realm, dst_realm_buf[], dst_realm_sz;
dest_realm = dst_realm_buf;
(void)strncpy(dest_realm, optarg, dst_realm_sz);
}
#else
fprintf(stderr,
"%s: Warning: -k ignored, no Kerberos V4 support.\n",
prompt);
#endif
#else
fprintf(stderr,
"%s: Warning: -k ignored, no Kerberos V4 support.\n",
prompt);
#endif
break;
case 'l':
#ifdef AUTHENTICATION
/* This is the default now, so ignore it */
#else
autologin = 1;
#endif
user = optarg;
break;
case 'n':
SetNetTrace(optarg);
break;
case 'r':
rlogin = '~';
break;
case 's':
src_addr = optarg;
break;
case 'u':
family = AF_UNIX;
break;
case 'x':
#ifndef ENCRYPTION
fprintf(stderr,
"%s: Warning: -x ignored, no ENCRYPT support.\n",
prompt);
#endif /* ENCRYPTION */
break;
case 'y':
#ifdef ENCRYPTION
encrypt_auto(0);
decrypt_auto(0);
#else
fprintf(stderr,
"%s: Warning: -y ignored, no ENCRYPT support.\n",
prompt);
#endif /* ENCRYPTION */
break;
#if defined(IPSEC) && defined(IPSEC_POLICY_IPSEC)
case 'P':
if (!strncmp("in", optarg, 2))
ipsec_policy_in = strdup(optarg);
else if (!strncmp("out", optarg, 3))
ipsec_policy_out = strdup(optarg);
else
usage();
break;
#endif
case '?':
default:
usage();
/* NOTREACHED */
}
}
if (autologin == -1)
autologin = (rlogin == _POSIX_VDISABLE) ? 0 : 1;
argc -= optind;
argv += optind;
if (argc) {
char *args[9], **argp = args;
if (argc > 2)
usage();
*argp++ = prompt;
if (user) {
*argp++ = strdup("-l");
*argp++ = user;
}
if (src_addr) {
*argp++ = strdup("-s");
*argp++ = src_addr;
}
*argp++ = argv[0]; /* host */
if (argc > 1)
*argp++ = argv[1]; /* port */
*argp = 0;
if (setjmp(toplevel) != 0)
Exit(0);
if (tn(argp - args, args) == 1)
return (0);
else
return (1);
}
(void)setjmp(toplevel);
for (;;) {
command(1, 0, 0);
}
return 0;
}