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/* $OpenBSD: main.c,v 1.36 2015/12/06 12:00:16 tobias Exp $ */ |
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/* $NetBSD: main.c,v 1.5 1996/02/28 21:04:05 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. 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 "telnet_locl.h" |
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#include <sys/socket.h> |
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#include <stdlib.h> |
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#include <string.h> |
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#include <unistd.h> |
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int family = AF_UNSPEC; |
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int rtableid = -1; |
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/* |
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* Initialize variables. |
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*/ |
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void |
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tninit(void) |
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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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} |
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static __dead void |
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usage(void) |
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{ |
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extern char *__progname; |
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(void)fprintf(stderr, |
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"usage: %s [-4678acDEKLr] [-b hostalias] [-e escapechar] " |
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"[-l user]\n" |
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"\t[-n tracefile] [-V rtable] [host [port]]\n", |
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__progname); |
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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(int argc, char *argv[]) |
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{ |
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int ch; |
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extern char *__progname; |
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char *user, *alias; |
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const char *errstr; |
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tninit(); /* Clear out things */ |
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TerminalSaveState(); |
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prompt = __progname; |
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user = alias = NULL; |
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rlogin = (strncmp(prompt, "rlog", 4) == 0) ? '~' : _POSIX_VDISABLE; |
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autologin = -1; |
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while ((ch = getopt(argc, argv, "4678ab:cDEe:KLl:n:rV:")) |
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!= -1) { |
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switch(ch) { |
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case '4': |
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family = AF_INET; |
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break; |
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case '6': |
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family = AF_INET6; |
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break; |
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case '7': |
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eight = 0; |
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break; |
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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 'a': |
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autologin = 1; |
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break; |
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case 'b': |
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alias = optarg; |
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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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/* sometimes we don't want a mangled display */ |
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char *p; |
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if((p = getenv("DISPLAY"))) |
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env_define("DISPLAY", (unsigned char*)p); |
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break; |
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} |
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case 'E': |
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rlogin = escape = _POSIX_VDISABLE; |
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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 'K': |
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autologin = 0; |
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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 '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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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 'V': |
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rtableid = (int)strtonum(optarg, 0, |
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RT_TABLEID_MAX, &errstr); |
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if (errstr) { |
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fprintf(stderr, "%s: Warning: " |
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"-V ignored, rtable %s: %s\n", |
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prompt, errstr, optarg); |
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} |
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break; |
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case '?': |
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default: |
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usage(); |
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} |
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} |
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if (rtableid >= 0) |
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if (setrtable(rtableid) == -1) { |
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perror("setrtable"); |
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exit(1); |
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} |
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if (pledge("stdio rpath wpath getpw dns inet tty cpath", NULL) == -1) { |
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perror("pledge"); |
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exit(1); |
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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[8], **argp = args; |
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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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if (alias) { |
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*argp++ = "-b"; |
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*argp++ = alias; |
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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 = NULL; |
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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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command(1, NULL, 0); |
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} |
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return 0; |
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} |