1 /* 2 * Copyright 2002 Sun Microsystems, Inc. All rights reserved. 3 * Use is subject to license terms. 4 */ 5 6 #pragma ident "%Z%%M% %I% %E% SMI" 7 8 /* 9 * Copyright (c) 1988, 1990 Regents of the University of California. 10 * All rights reserved. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. All advertising materials mentioning features or use of this software 21 * must display the following acknowledgement: 22 * This product includes software developed by the University of 23 * California, Berkeley and its contributors. 24 * 4. Neither the name of the University nor the names of its contributors 25 * may be used to endorse or promote products derived from this software 26 * without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 31 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 38 * SUCH DAMAGE. 39 */ 40 41 #ifndef lint 42 char copyright[] = 43 "@(#) Copyright (c) 1988, 1990 Regents of the University of California.\n" 44 " All rights reserved.\n"; 45 #endif /* not lint */ 46 47 #ifndef lint 48 static char sccsid[] = "@(#)main.c 5.5 (Berkeley) 12/18/92"; 49 #endif /* not lint */ 50 51 #include <string.h> 52 #include <sys/types.h> 53 54 #include "ring.h" 55 #include "externs.h" 56 #include "defines.h" 57 58 /* These values need to be the same as defined in libtelnet/kerberos5.c */ 59 /* Either define them in both places, or put in some common header file. */ 60 #define OPTS_FORWARD_CREDS 0x00000002 61 #define OPTS_FORWARDABLE_CREDS 0x00000001 62 63 /* 64 * This flag is incremented, if any of the 65 * Kerberos command line options are used. 66 */ 67 int krb5auth_flag = 0; 68 69 /* 70 * Initialize variables. 71 */ 72 int 73 tninit() 74 { 75 init_terminal(); 76 77 init_network(); 78 79 if (init_telnet() == 0) 80 return (0); 81 82 init_sys(); 83 84 return (1); 85 } 86 87 #if defined(USE_TOS) 88 #define TELNET_OPTIONS "8EKLS:X:acde:fFk:l:n:rt:x" 89 #else 90 #define TELNET_OPTIONS "8EKLX:acde:fFk:l:n:rt:x" 91 #endif /* USE_TOS */ 92 93 static void 94 usage() 95 { 96 (void) fprintf(stderr, "Usage: %s %s\n", 97 prompt, 98 " [-8] [-E] [-K] [-L] [-a] [-c] [-d] [-f/-F] [-r] [-x]" 99 "\n\t[-e char] [-k realm] [-l user] [-n tracefile] [-X atype]" 100 "\n\t[host-name [port]]"); 101 exit(1); 102 } 103 104 /* 105 * main. Parse arguments, invoke the protocol or command parser. 106 */ 107 108 109 int 110 main(int argc, char *argv[]) 111 { 112 int ch; 113 char *user; 114 extern boolean_t auth_enable_encrypt; 115 extern int forward_flags; 116 117 /* Clear out things */ 118 if (tninit() == 0) 119 return (EXIT_FAILURE); 120 121 if (!isatty(fileno(stdin))) { 122 setbuf(stdin, NULL); 123 } 124 if (!isatty(fileno(stdout))) { 125 setbuf(stdout, NULL); 126 } 127 128 TerminalSaveState(); 129 130 if (prompt = strrchr(argv[0], '/')) 131 ++prompt; 132 else 133 prompt = argv[0]; 134 135 user = NULL; 136 137 rlogin = (strncmp(prompt, "rlog", 4) == 0) ? '~' : _POSIX_VDISABLE; 138 autologin = -1; 139 140 while ((ch = getopt(argc, argv, TELNET_OPTIONS)) != EOF) { 141 switch (ch) { 142 case 'K': 143 autologin_set = 1; 144 autologin = 0; 145 krb5auth_flag++; 146 break; 147 case 'X': 148 auth_disable_name(optarg); 149 krb5auth_flag++; 150 break; 151 case 'a': 152 autologin_set = 1; 153 autologin = 1; 154 krb5auth_flag++; 155 break; 156 case 'f': 157 if (forward_flags & OPTS_FORWARD_CREDS) { 158 (void) fprintf(stderr, gettext( 159 "%s: Only one of -f " 160 "and -F allowed.\n"), prompt); 161 usage(); 162 } 163 forward_flags |= OPTS_FORWARD_CREDS; 164 forward_flag_set = 1; 165 krb5auth_flag++; 166 break; 167 case 'F': 168 if (forward_flags & OPTS_FORWARD_CREDS) { 169 (void) fprintf(stderr, gettext( 170 "%s: Only one of -f " 171 "and -F allowed.\n"), prompt); 172 usage(); 173 } 174 forward_flags |= OPTS_FORWARD_CREDS; 175 forward_flags |= OPTS_FORWARDABLE_CREDS; 176 forwardable_flag_set = 1; 177 forward_flag = 1; 178 krb5auth_flag++; 179 break; 180 case 'k': 181 set_krb5_realm(optarg); 182 krb5auth_flag++; 183 break; 184 case 'x': 185 if (krb5_privacy_allowed()) { 186 encrypt_auto(1); 187 decrypt_auto(1); 188 wantencryption = B_TRUE; 189 autologin = 1; 190 autologin_set = 1; 191 auth_enable_encrypt = B_TRUE; 192 encrypt_flag_set = 1; 193 krb5auth_flag++; 194 } else { 195 (void) fprintf(stderr, gettext( 196 "%s: Encryption not supported.\n"), 197 prompt); 198 exit(1); 199 } 200 break; 201 202 /* begin common options */ 203 case '8': 204 eight = 3; /* binary output and input */ 205 break; 206 case 'E': 207 escape_valid = B_FALSE; 208 rlogin = escape = _POSIX_VDISABLE; 209 break; 210 case 'L': 211 eight |= 2; /* binary output only */ 212 break; 213 #if USE_TOS 214 case 'S': 215 (void) fprintf(stderr, 216 "%s: Warning: -S ignored, no parsetos() support.\n", 217 prompt); 218 break; 219 #endif /* USE_TOS */ 220 case 'c': 221 skiprc = 1; 222 break; 223 case 'd': 224 debug = 1; 225 break; 226 case 'e': 227 escape_valid = B_TRUE; 228 set_escape_char(optarg); 229 break; 230 case 'l': 231 autologin_set = 1; 232 autologin = 1; 233 user = optarg; 234 break; 235 case 'n': 236 SetNetTrace(optarg); 237 break; 238 case 'r': 239 rlogin = '~'; 240 break; 241 case 't': 242 (void) fprintf(stderr, 243 "%s: Warning: -t ignored, no TN3270 support.\n", 244 prompt); 245 break; 246 default: 247 usage(); 248 /* NOTREACHED */ 249 } 250 } 251 if (autologin == -1) 252 autologin = (rlogin == _POSIX_VDISABLE) ? 0 : 1; 253 254 argc -= optind; 255 argv += optind; 256 257 if (argc) { 258 char *args[7], **argp = args; 259 260 if (argc > 2) 261 usage(); 262 *argp++ = prompt; 263 if (user) { 264 *argp++ = "-l"; 265 *argp++ = user; 266 } 267 *argp++ = argv[0]; /* host */ 268 if (argc > 1) 269 *argp++ = argv[1]; /* port */ 270 *argp = 0; 271 272 if (setjmp(toplevel) != 0) 273 Exit(EXIT_SUCCESS); 274 if (tn(argp - args, args) == 1) 275 return (EXIT_SUCCESS); 276 else 277 return (EXIT_FAILURE); 278 } 279 (void) setjmp(toplevel); 280 for (;;) { 281 command(1, 0, 0); 282 } 283 } 284