5c099b14c1
pull in just about all of the differences from the crypto-us telnet suite (which includes Kerberos 4 and connection encryption support). Also bring in the Kerberos 5 support from the Heimdal telnet, and frob a little so that it can work with the non-Heimdal telnet suite. There is still some work left to do, specifically: - Add Heimdal's ticket forwarding support to the Berkeley Kerberos 4 module. - Add connection encryption support to the Heimdal Kerberos 5 module. Hints on this can be taken from the MIT Kerberos 5 module which still exists in crypto-us. However, even with the shortcomings listed above, this is a better situation than using the stock Heimdal telnet suite, which does not understand the IPSec policy stuff, and is also based on much older code which contains bugs that we have already fixed in the NetBSD sources.
371 lines
8.5 KiB
C
371 lines
8.5 KiB
C
/* $NetBSD: main.c,v 1.13 2000/06/22 06:47:48 thorpej Exp $ */
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/*
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* Copyright (c) 1988, 1990, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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__COPYRIGHT("@(#) Copyright (c) 1988, 1990, 1993\n\
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The Regents of the University of California. All rights reserved.\n");
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#endif /* not lint */
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)main.c 8.3 (Berkeley) 5/30/95";
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#else
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__RCSID("$NetBSD: main.c,v 1.13 2000/06/22 06:47:48 thorpej Exp $");
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#endif
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#endif /* not lint */
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#include <sys/types.h>
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#include <unistd.h>
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#include "ring.h"
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#include "externs.h"
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#include "defines.h"
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#ifdef AUTHENTICATION
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#include <libtelnet/auth.h>
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#endif
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#ifdef ENCRYPTION
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#include <libtelnet/encrypt.h>
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#endif
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/* These values need to be the same as defined in libtelnet/kerberos5.c */
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/* Either define them in both places, or put in some common header file. */
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#define OPTS_FORWARD_CREDS 0x00000002
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#define OPTS_FORWARDABLE_CREDS 0x00000001
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#if 0
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#define FORWARD
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#endif
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#if defined(IPSEC) && defined(IPSEC_POLICY_IPSEC)
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char *ipsec_policy_in = NULL;
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char *ipsec_policy_out = NULL;
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#endif
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int main P((int, char *[]));
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/*
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* Initialize variables.
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*/
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void
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tninit()
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{
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init_terminal();
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init_network();
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init_telnet();
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init_sys();
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#if defined(TN3270)
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init_3270();
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#endif
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}
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void
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usage()
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{
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fprintf(stderr, "Usage: %s %s%s%s%s\n",
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prompt,
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#ifdef AUTHENTICATION
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"[-8] [-E] [-K] [-L] [-N] [-S tos] [-X atype] [-a] [-c] [-d]",
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"\n\t[-e char] [-k realm] [-l user] [-f/-F] [-n tracefile] ",
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#else
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"[-8] [-E] [-L] [-N] [-S tos] [-a] [-c] [-d] [-e char] [-l user]",
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"\n\t[-n tracefile]",
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#endif
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#if defined(TN3270) && defined(unix)
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# ifdef AUTHENTICATION
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"[-noasynch] [-noasynctty]\n\t[-noasyncnet] [-r] [-t transcom] ",
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# else
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"[-noasynch] [-noasynctty] [-noasyncnet] [-r]\n\t[-t transcom]",
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# endif
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#else
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"[-r] ",
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#endif
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#ifdef ENCRYPTION
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"[-x] "
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#endif
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#if defined(IPSEC) && defined(IPSEC_POLICY_IPSEC)
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"[-P policy] [host-name [port]]"
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#else
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"[host-name [port]]"
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#endif
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);
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exit(1);
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}
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/*
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* main. Parse arguments, invoke the protocol or command parser.
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*/
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int
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main(argc, argv)
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int argc;
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char *argv[];
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{
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extern char *optarg;
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extern int optind;
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int ch;
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char *user;
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#ifdef FORWARD
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extern int forward_flags;
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#endif /* FORWARD */
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tninit(); /* Clear out things */
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#if defined(CRAY) && !defined(__STDC__)
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_setlist_init(); /* Work around compiler bug */
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#endif
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TerminalSaveState();
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if ((prompt = strrchr(argv[0], '/')) != NULL)
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++prompt;
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else
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prompt = argv[0];
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user = NULL;
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rlogin = (strncmp(prompt, "rlog", 4) == 0) ? '~' : _POSIX_VDISABLE;
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autologin = -1;
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#if defined(IPSEC) && defined(IPSEC_POLICY_IPSEC)
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#define IPSECOPT "P:"
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#else
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#define IPSECOPT
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#endif
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while ((ch = getopt(argc, argv, "8EKLNS:X:acde:fFk:l:n:rt:x"
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IPSECOPT)) != -1) {
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#undef IPSECOPT
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switch(ch) {
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case '8':
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eight = 3; /* binary output and input */
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break;
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case 'E':
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rlogin = escape = _POSIX_VDISABLE;
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break;
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case 'K':
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#ifdef AUTHENTICATION
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autologin = 0;
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#endif
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break;
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case 'L':
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eight |= 2; /* binary output only */
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break;
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case 'N':
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doaddrlookup = 0;
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break;
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case 'S':
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{
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#ifdef HAS_GETTOS
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extern int tos;
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if ((tos = parsetos(optarg, "tcp")) < 0)
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fprintf(stderr, "%s%s%s%s\n",
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prompt, ": Bad TOS argument '",
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optarg,
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"; will try to use default TOS");
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#else
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fprintf(stderr,
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"%s: Warning: -S ignored, no parsetos() support.\n",
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prompt);
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#endif
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}
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break;
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case 'X':
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#ifdef AUTHENTICATION
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auth_disable_name(optarg);
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#endif
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break;
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case 'a':
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autologin = 1;
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break;
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case 'c':
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skiprc = 1;
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break;
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case 'd':
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debug = 1;
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break;
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case 'e':
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set_escape_char(optarg);
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break;
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case 'f':
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#if defined(AUTHENTICATION) && defined(KRB5) && defined(FORWARD)
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if (forward_flags & OPTS_FORWARD_CREDS) {
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fprintf(stderr,
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"%s: Only one of -f and -F allowed.\n",
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prompt);
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usage();
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}
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forward_flags |= OPTS_FORWARD_CREDS;
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#else
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fprintf(stderr,
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"%s: Warning: -f ignored, no Kerberos V5 support.\n",
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prompt);
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#endif
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break;
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case 'F':
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#if defined(AUTHENTICATION) && defined(KRB5) && defined(FORWARD)
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if (forward_flags & OPTS_FORWARD_CREDS) {
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fprintf(stderr,
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"%s: Only one of -f and -F allowed.\n",
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prompt);
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usage();
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}
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forward_flags |= OPTS_FORWARD_CREDS;
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forward_flags |= OPTS_FORWARDABLE_CREDS;
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#else
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fprintf(stderr,
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"%s: Warning: -F ignored, no Kerberos V5 support.\n",
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prompt);
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#endif
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break;
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case 'k':
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#if defined(AUTHENTICATION) && defined(KRB4)
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{
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extern char *dest_realm, dst_realm_buf[], dst_realm_sz;
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dest_realm = dst_realm_buf;
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(void)strncpy(dest_realm, optarg, dst_realm_sz);
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}
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#else
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fprintf(stderr,
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"%s: Warning: -k ignored, no Kerberos V4 support.\n",
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prompt);
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#endif
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break;
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case 'l':
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autologin = 1;
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user = optarg;
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break;
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case 'n':
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#if defined(TN3270) && defined(unix)
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/* distinguish between "-n oasynch" and "-noasynch" */
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if (argv[optind - 1][0] == '-' && argv[optind - 1][1]
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== 'n' && argv[optind - 1][2] == 'o') {
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if (!strcmp(optarg, "oasynch")) {
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noasynchtty = 1;
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noasynchnet = 1;
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} else if (!strcmp(optarg, "oasynchtty"))
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noasynchtty = 1;
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else if (!strcmp(optarg, "oasynchnet"))
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noasynchnet = 1;
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} else
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#endif /* defined(TN3270) && defined(unix) */
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SetNetTrace(optarg);
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break;
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case 'r':
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rlogin = '~';
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break;
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case 't':
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#if defined(TN3270) && defined(unix)
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transcom = tline;
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(void)strcpy(transcom, optarg);
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#else
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fprintf(stderr,
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"%s: Warning: -t ignored, no TN3270 support.\n",
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prompt);
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#endif
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break;
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case 'x':
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#ifdef ENCRYPTION
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encrypt_auto(1);
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decrypt_auto(1);
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#else /* ENCRYPTION */
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fprintf(stderr,
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"%s: Warning: -x ignored, no ENCRYPT support.\n",
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prompt);
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#endif /* ENCRYPTION */
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break;
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#if defined(IPSEC) && defined(IPSEC_POLICY_IPSEC)
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case 'P':
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if (!strncmp("in", optarg, 2))
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ipsec_policy_in = strdup(optarg);
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else if (!strncmp("out", optarg, 3))
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ipsec_policy_out = strdup(optarg);
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else
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usage();
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break;
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#endif
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case '?':
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default:
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usage();
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/* NOTREACHED */
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}
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}
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if (autologin == -1)
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autologin = (rlogin == _POSIX_VDISABLE) ? 0 : 1;
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argc -= optind;
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argv += optind;
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if (argc) {
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char *args[7], **argp = args;
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#ifdef __GNUC__
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(void) &argp; /* avoid longjmp clobbering */
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#endif
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if (argc > 2)
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usage();
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*argp++ = prompt;
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if (user) {
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*argp++ = "-l";
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*argp++ = user;
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}
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*argp++ = argv[0]; /* host */
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if (argc > 1)
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*argp++ = argv[1]; /* port */
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*argp = 0;
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if (setjmp(toplevel) != 0)
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Exit(0);
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if (tn(argp - args, args) == 1)
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return (0);
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else
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return (1);
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}
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(void)setjmp(toplevel);
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for (;;) {
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#ifdef TN3270
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if (shell_active)
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shell_continue();
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else
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#endif
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command(1, 0, 0);
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}
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}
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