Annotation of src/usr.bin/telnet/commands.c, Revision 1.14
1.14 ! art 1: /* $OpenBSD: commands.c,v 1.13 1998/04/07 20:01:06 art Exp $ */
1.4 deraadt 2: /* $NetBSD: commands.c,v 1.14 1996/03/24 22:03:48 jtk Exp $ */
1.3 niklas 3:
1.1 deraadt 4: /*
5: * Copyright (c) 1988, 1990, 1993
6: * The Regents of the University of California. All rights reserved.
7: *
8: * Redistribution and use in source and binary forms, with or without
9: * modification, are permitted provided that the following conditions
10: * are met:
11: * 1. Redistributions of source code must retain the above copyright
12: * notice, this list of conditions and the following disclaimer.
13: * 2. Redistributions in binary form must reproduce the above copyright
14: * notice, this list of conditions and the following disclaimer in the
15: * documentation and/or other materials provided with the distribution.
16: * 3. All advertising materials mentioning features or use of this software
17: * must display the following acknowledgement:
18: * This product includes software developed by the University of
19: * California, Berkeley and its contributors.
20: * 4. Neither the name of the University nor the names of its contributors
21: * may be used to endorse or promote products derived from this software
22: * without specific prior written permission.
23: *
24: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34: * SUCH DAMAGE.
35: */
36:
1.10 art 37: #include "telnet_locl.h"
1.1 deraadt 38:
39: #if defined(IPPROTO_IP) && defined(IP_TOS)
40: int tos = -1;
41: #endif /* defined(IPPROTO_IP) && defined(IP_TOS) */
42:
43: char *hostname;
44: static char _hostname[MAXHOSTNAMELEN];
45:
1.10 art 46: typedef int (*intrtn_t)(int, char**);
47: static int call __P((intrtn_t, ...));
1.1 deraadt 48:
49: typedef struct {
50: char *name; /* command name */
51: char *help; /* help string (NULL for no help) */
52: int (*handler)(); /* routine which executes command */
53: int needconnect; /* Do we need to be connected to execute? */
54: } Command;
55:
56: static char line[256];
57: static char saveline[256];
58: static int margc;
59: static char *margv[20];
60:
1.6 deraadt 61: #if defined(SKEY)
62: #include <sys/wait.h>
63: #define PATH_SKEY "/usr/bin/skey"
64: int
65: skey_calc(argc, argv)
66: int argc;
67: char **argv;
68: {
69: int status;
70:
71: if(argc != 3) {
72: printf("%s sequence challenge\n", argv[0]);
73: return;
74: }
75:
76: switch(fork()) {
77: case 0:
78: execv(PATH_SKEY, argv);
79: exit (1);
80: case -1:
81: perror("fork");
82: break;
83: default:
84: (void) wait(&status);
85: if (WIFEXITED(status))
86: return (WEXITSTATUS(status));
87: return (0);
88: }
89: }
90: #endif
91:
92:
93:
1.1 deraadt 94: static void
95: makeargv()
96: {
97: register char *cp, *cp2, c;
98: register char **argp = margv;
99:
100: margc = 0;
101: cp = line;
102: if (*cp == '!') { /* Special case shell escape */
103: strcpy(saveline, line); /* save for shell command */
104: *argp++ = "!"; /* No room in string to get this */
105: margc++;
106: cp++;
107: }
1.10 art 108: while ((c = *cp)) {
1.1 deraadt 109: register int inquote = 0;
110: while (isspace(c))
111: c = *++cp;
112: if (c == '\0')
113: break;
114: *argp++ = cp;
115: margc += 1;
116: for (cp2 = cp; c != '\0'; c = *++cp) {
117: if (inquote) {
118: if (c == inquote) {
119: inquote = 0;
120: continue;
121: }
122: } else {
123: if (c == '\\') {
124: if ((c = *++cp) == '\0')
125: break;
126: } else if (c == '"') {
127: inquote = '"';
128: continue;
129: } else if (c == '\'') {
130: inquote = '\'';
131: continue;
132: } else if (isspace(c))
133: break;
134: }
135: *cp2++ = c;
136: }
137: *cp2 = '\0';
138: if (c == '\0')
139: break;
140: cp++;
141: }
142: *argp++ = 0;
143: }
144:
145: /*
146: * Make a character string into a number.
147: *
148: * Todo: 1. Could take random integers (12, 0x12, 012, 0b1).
149: */
150:
151: static
152: special(s)
153: register char *s;
154: {
155: register char c;
156: char b;
157:
158: switch (*s) {
159: case '^':
160: b = *++s;
161: if (b == '?') {
162: c = b | 0x40; /* DEL */
163: } else {
164: c = b & 0x1f;
165: }
166: break;
167: default:
168: c = *s;
169: break;
170: }
171: return c;
172: }
173:
174: /*
175: * Construct a control character sequence
176: * for a special character.
177: */
178: static char *
179: control(c)
180: register cc_t c;
181: {
182: static char buf[5];
183: /*
184: * The only way I could get the Sun 3.5 compiler
185: * to shut up about
186: * if ((unsigned int)c >= 0x80)
187: * was to assign "c" to an unsigned int variable...
188: * Arggg....
189: */
190: register unsigned int uic = (unsigned int)c;
191:
192: if (uic == 0x7f)
193: return ("^?");
194: if (c == (cc_t)_POSIX_VDISABLE) {
195: return "off";
196: }
197: if (uic >= 0x80) {
198: buf[0] = '\\';
199: buf[1] = ((c>>6)&07) + '0';
200: buf[2] = ((c>>3)&07) + '0';
201: buf[3] = (c&07) + '0';
202: buf[4] = 0;
203: } else if (uic >= 0x20) {
204: buf[0] = c;
205: buf[1] = 0;
206: } else {
207: buf[0] = '^';
208: buf[1] = '@'+c;
209: buf[2] = 0;
210: }
211: return (buf);
212: }
213:
214:
215:
216: /*
217: * The following are data structures and routines for
218: * the "send" command.
219: *
220: */
1.3 niklas 221:
1.1 deraadt 222: struct sendlist {
223: char *name; /* How user refers to it (case independent) */
224: char *help; /* Help information (0 ==> no help) */
225: int needconnect; /* Need to be connected */
226: int narg; /* Number of arguments */
227: int (*handler)(); /* Routine to perform (for special ops) */
228: int nbyte; /* Number of bytes to send this command */
229: int what; /* Character to be sent (<0 ==> special) */
230: };
231:
232:
233: static int
234: send_esc P((void)),
235: send_help P((void)),
236: send_docmd P((char *)),
237: send_dontcmd P((char *)),
238: send_willcmd P((char *)),
239: send_wontcmd P((char *));
240:
241: static struct sendlist Sendlist[] = {
242: { "ao", "Send Telnet Abort output", 1, 0, 0, 2, AO },
243: { "ayt", "Send Telnet 'Are You There'", 1, 0, 0, 2, AYT },
244: { "brk", "Send Telnet Break", 1, 0, 0, 2, BREAK },
245: { "break", 0, 1, 0, 0, 2, BREAK },
246: { "ec", "Send Telnet Erase Character", 1, 0, 0, 2, EC },
247: { "el", "Send Telnet Erase Line", 1, 0, 0, 2, EL },
248: { "escape", "Send current escape character", 1, 0, send_esc, 1, 0 },
249: { "ga", "Send Telnet 'Go Ahead' sequence", 1, 0, 0, 2, GA },
250: { "ip", "Send Telnet Interrupt Process", 1, 0, 0, 2, IP },
251: { "intp", 0, 1, 0, 0, 2, IP },
252: { "interrupt", 0, 1, 0, 0, 2, IP },
253: { "intr", 0, 1, 0, 0, 2, IP },
254: { "nop", "Send Telnet 'No operation'", 1, 0, 0, 2, NOP },
255: { "eor", "Send Telnet 'End of Record'", 1, 0, 0, 2, EOR },
256: { "abort", "Send Telnet 'Abort Process'", 1, 0, 0, 2, ABORT },
257: { "susp", "Send Telnet 'Suspend Process'", 1, 0, 0, 2, SUSP },
258: { "eof", "Send Telnet End of File Character", 1, 0, 0, 2, xEOF },
259: { "synch", "Perform Telnet 'Synch operation'", 1, 0, dosynch, 2, 0 },
260: { "getstatus", "Send request for STATUS", 1, 0, get_status, 6, 0 },
261: { "?", "Display send options", 0, 0, send_help, 0, 0 },
262: { "help", 0, 0, 0, send_help, 0, 0 },
263: { "do", 0, 0, 1, send_docmd, 3, 0 },
264: { "dont", 0, 0, 1, send_dontcmd, 3, 0 },
265: { "will", 0, 0, 1, send_willcmd, 3, 0 },
266: { "wont", 0, 0, 1, send_wontcmd, 3, 0 },
267: { 0 }
268: };
269:
270: #define GETSEND(name) ((struct sendlist *) genget(name, (char **) Sendlist, \
271: sizeof(struct sendlist)))
272:
273: static int
274: sendcmd(argc, argv)
275: int argc;
276: char **argv;
277: {
278: int count; /* how many bytes we are going to need to send */
279: int i;
280: struct sendlist *s; /* pointer to current command */
281: int success = 0;
282: int needconnect = 0;
283:
284: if (argc < 2) {
1.10 art 285: printf("need at least one argument for 'send' command\r\n");
286: printf("'send ?' for help\r\n");
1.1 deraadt 287: return 0;
288: }
289: /*
290: * First, validate all the send arguments.
291: * In addition, we see how much space we are going to need, and
292: * whether or not we will be doing a "SYNCH" operation (which
293: * flushes the network queue).
294: */
295: count = 0;
296: for (i = 1; i < argc; i++) {
297: s = GETSEND(argv[i]);
298: if (s == 0) {
1.10 art 299: printf("Unknown send argument '%s'\r\n'send ?' for help.\r\n",
1.1 deraadt 300: argv[i]);
301: return 0;
302: } else if (Ambiguous(s)) {
1.10 art 303: printf("Ambiguous send argument '%s'\r\n'send ?' for help.\r\n",
1.1 deraadt 304: argv[i]);
305: return 0;
306: }
307: if (i + s->narg >= argc) {
308: fprintf(stderr,
1.10 art 309: "Need %d argument%s to 'send %s' command. 'send %s ?' for help.\r\n",
1.1 deraadt 310: s->narg, s->narg == 1 ? "" : "s", s->name, s->name);
311: return 0;
312: }
313: count += s->nbyte;
314: if (s->handler == send_help) {
315: send_help();
316: return 0;
317: }
318:
319: i += s->narg;
320: needconnect += s->needconnect;
321: }
322: if (!connected && needconnect) {
1.10 art 323: printf("?Need to be connected first.\r\n");
324: printf("'send ?' for help\r\n");
1.1 deraadt 325: return 0;
326: }
327: /* Now, do we have enough room? */
328: if (NETROOM() < count) {
1.10 art 329: printf("There is not enough room in the buffer TO the network\r\n");
330: printf("to process your request. Nothing will be done.\r\n");
331: printf("('send synch' will throw away most data in the network\r\n");
332: printf("buffer, if this might help.)\r\n");
1.1 deraadt 333: return 0;
334: }
335: /* OK, they are all OK, now go through again and actually send */
336: count = 0;
337: for (i = 1; i < argc; i++) {
338: if ((s = GETSEND(argv[i])) == 0) {
1.10 art 339: fprintf(stderr, "Telnet 'send' error - argument disappeared!\r\n");
1.1 deraadt 340: (void) quit();
341: /*NOTREACHED*/
342: }
343: if (s->handler) {
344: count++;
345: success += (*s->handler)((s->narg > 0) ? argv[i+1] : 0,
346: (s->narg > 1) ? argv[i+2] : 0);
347: i += s->narg;
348: } else {
349: NET2ADD(IAC, s->what);
350: printoption("SENT", IAC, s->what);
351: }
352: }
353: return (count == success);
354: }
355:
1.10 art 356: static int
357: send_tncmd(void (*func)(), char *cmd, char *name);
358:
1.1 deraadt 359: static int
360: send_esc()
361: {
362: NETADD(escape);
363: return 1;
364: }
365:
366: static int
367: send_docmd(name)
368: char *name;
369: {
370: return(send_tncmd(send_do, "do", name));
371: }
372:
373: static int
374: send_dontcmd(name)
375: char *name;
376: {
377: return(send_tncmd(send_dont, "dont", name));
378: }
379: static int
380: send_willcmd(name)
381: char *name;
382: {
383: return(send_tncmd(send_will, "will", name));
384: }
385: static int
386: send_wontcmd(name)
387: char *name;
388: {
389: return(send_tncmd(send_wont, "wont", name));
390: }
391:
392: int
393: send_tncmd(func, cmd, name)
394: void (*func)();
395: char *cmd, *name;
396: {
397: char **cpp;
398: extern char *telopts[];
399: register int val = 0;
400:
1.10 art 401: if (isprefix(name, "help") || isprefix(name, "?")) {
1.1 deraadt 402: register int col, len;
403:
1.10 art 404: printf("Usage: send %s <value|option>\r\n", cmd);
405: printf("\"value\" must be from 0 to 255\r\n");
406: printf("Valid options are:\r\n\t");
1.1 deraadt 407:
408: col = 8;
409: for (cpp = telopts; *cpp; cpp++) {
410: len = strlen(*cpp) + 3;
411: if (col + len > 65) {
1.10 art 412: printf("\r\n\t");
1.1 deraadt 413: col = 8;
414: }
415: printf(" \"%s\"", *cpp);
416: col += len;
417: }
1.10 art 418: printf("\r\n");
1.1 deraadt 419: return 0;
420: }
421: cpp = (char **)genget(name, telopts, sizeof(char *));
422: if (Ambiguous(cpp)) {
1.10 art 423: fprintf(stderr,"'%s': ambiguous argument ('send %s ?' for help).\r\n",
1.1 deraadt 424: name, cmd);
425: return 0;
426: }
427: if (cpp) {
428: val = cpp - telopts;
429: } else {
430: register char *cp = name;
431:
432: while (*cp >= '0' && *cp <= '9') {
433: val *= 10;
434: val += *cp - '0';
435: cp++;
436: }
437: if (*cp != 0) {
1.10 art 438: fprintf(stderr, "'%s': unknown argument ('send %s ?' for help).\r\n",
1.1 deraadt 439: name, cmd);
440: return 0;
441: } else if (val < 0 || val > 255) {
1.10 art 442: fprintf(stderr, "'%s': bad value ('send %s ?' for help).\r\n",
1.1 deraadt 443: name, cmd);
444: return 0;
445: }
446: }
447: if (!connected) {
1.10 art 448: printf("?Need to be connected first.\r\n");
1.1 deraadt 449: return 0;
450: }
451: (*func)(val, 1);
452: return 1;
453: }
454:
455: static int
456: send_help()
457: {
458: struct sendlist *s; /* pointer to current command */
459: for (s = Sendlist; s->name; s++) {
460: if (s->help)
1.10 art 461: printf("%-15s %s\r\n", s->name, s->help);
1.1 deraadt 462: }
463: return(0);
464: }
465:
466: /*
467: * The following are the routines and data structures referred
468: * to by the arguments to the "toggle" command.
469: */
470:
471: static int
472: lclchars()
473: {
474: donelclchars = 1;
475: return 1;
476: }
477:
478: static int
479: togdebug()
480: {
481: #ifndef NOT43
482: if (net > 0 &&
483: (SetSockOpt(net, SOL_SOCKET, SO_DEBUG, debug)) < 0) {
484: perror("setsockopt (SO_DEBUG)");
485: }
486: #else /* NOT43 */
487: if (debug) {
1.10 art 488: if (net > 0 && SetSockOpt(net, SOL_SOCKET, SO_DEBUG, 0, 0) < 0)
1.1 deraadt 489: perror("setsockopt (SO_DEBUG)");
490: } else
1.10 art 491: printf("Cannot turn off socket debugging\r\n");
1.1 deraadt 492: #endif /* NOT43 */
493: return 1;
494: }
495:
496:
497: static int
498: togcrlf()
499: {
500: if (crlf) {
1.10 art 501: printf("Will send carriage returns as telnet <CR><LF>.\r\n");
1.1 deraadt 502: } else {
1.10 art 503: printf("Will send carriage returns as telnet <CR><NUL>.\r\n");
1.1 deraadt 504: }
505: return 1;
506: }
507:
508: int binmode;
509:
510: static int
511: togbinary(val)
512: int val;
513: {
514: donebinarytoggle = 1;
515:
516: if (val >= 0) {
517: binmode = val;
518: } else {
519: if (my_want_state_is_will(TELOPT_BINARY) &&
520: my_want_state_is_do(TELOPT_BINARY)) {
521: binmode = 1;
522: } else if (my_want_state_is_wont(TELOPT_BINARY) &&
523: my_want_state_is_dont(TELOPT_BINARY)) {
524: binmode = 0;
525: }
526: val = binmode ? 0 : 1;
527: }
528:
529: if (val == 1) {
530: if (my_want_state_is_will(TELOPT_BINARY) &&
531: my_want_state_is_do(TELOPT_BINARY)) {
1.10 art 532: printf("Already operating in binary mode with remote host.\r\n");
1.1 deraadt 533: } else {
1.10 art 534: printf("Negotiating binary mode with remote host.\r\n");
1.1 deraadt 535: tel_enter_binary(3);
536: }
537: } else {
538: if (my_want_state_is_wont(TELOPT_BINARY) &&
539: my_want_state_is_dont(TELOPT_BINARY)) {
1.10 art 540: printf("Already in network ascii mode with remote host.\r\n");
1.1 deraadt 541: } else {
1.10 art 542: printf("Negotiating network ascii mode with remote host.\r\n");
1.1 deraadt 543: tel_leave_binary(3);
544: }
545: }
546: return 1;
547: }
548:
549: static int
550: togrbinary(val)
551: int val;
552: {
553: donebinarytoggle = 1;
554:
555: if (val == -1)
556: val = my_want_state_is_do(TELOPT_BINARY) ? 0 : 1;
557:
558: if (val == 1) {
559: if (my_want_state_is_do(TELOPT_BINARY)) {
1.10 art 560: printf("Already receiving in binary mode.\r\n");
1.1 deraadt 561: } else {
1.10 art 562: printf("Negotiating binary mode on input.\r\n");
1.1 deraadt 563: tel_enter_binary(1);
564: }
565: } else {
566: if (my_want_state_is_dont(TELOPT_BINARY)) {
1.10 art 567: printf("Already receiving in network ascii mode.\r\n");
1.1 deraadt 568: } else {
1.10 art 569: printf("Negotiating network ascii mode on input.\r\n");
1.1 deraadt 570: tel_leave_binary(1);
571: }
572: }
573: return 1;
574: }
575:
576: static int
577: togxbinary(val)
578: int val;
579: {
580: donebinarytoggle = 1;
581:
582: if (val == -1)
583: val = my_want_state_is_will(TELOPT_BINARY) ? 0 : 1;
584:
585: if (val == 1) {
586: if (my_want_state_is_will(TELOPT_BINARY)) {
1.10 art 587: printf("Already transmitting in binary mode.\r\n");
1.1 deraadt 588: } else {
1.10 art 589: printf("Negotiating binary mode on output.\r\n");
1.1 deraadt 590: tel_enter_binary(2);
591: }
592: } else {
593: if (my_want_state_is_wont(TELOPT_BINARY)) {
1.10 art 594: printf("Already transmitting in network ascii mode.\r\n");
1.1 deraadt 595: } else {
1.10 art 596: printf("Negotiating network ascii mode on output.\r\n");
1.1 deraadt 597: tel_leave_binary(2);
598: }
599: }
600: return 1;
601: }
602:
603:
604: static int togglehelp P((void));
605: #if defined(AUTHENTICATION)
606: extern int auth_togdebug P((int));
607: #endif
1.10 art 608: #if defined(ENCRYPTION)
609: extern int EncryptAutoEnc P((int));
610: extern int EncryptAutoDec P((int));
611: extern int EncryptDebug P((int));
612: extern int EncryptVerbose P((int));
613: #endif
614:
1.1 deraadt 615:
616: struct togglelist {
617: char *name; /* name of toggle */
618: char *help; /* help message */
619: int (*handler)(); /* routine to do actual setting */
620: int *variable;
621: char *actionexplanation;
1.8 robin 622: int needconnect; /* Need to be connected */
1.1 deraadt 623: };
624:
625: static struct togglelist Togglelist[] = {
626: { "autoflush",
627: "flushing of output when sending interrupt characters",
628: 0,
629: &autoflush,
1.10 art 630: "flush output when sending interrupt characters" },
1.1 deraadt 631: { "autosynch",
632: "automatic sending of interrupt characters in urgent mode",
633: 0,
634: &autosynch,
1.10 art 635: "send interrupt characters in urgent mode" },
1.1 deraadt 636: #if defined(AUTHENTICATION)
637: { "autologin",
638: "automatic sending of login and/or authentication info",
639: 0,
640: &autologin,
1.10 art 641: "send login name and/or authentication information" },
1.1 deraadt 642: { "authdebug",
643: "Toggle authentication debugging",
644: auth_togdebug,
645: 0,
1.10 art 646: "print authentication debugging information" },
647: #endif
648: #if defined(ENCRYPTION)
649: { "autoencrypt",
650: "automatic encryption of data stream",
651: EncryptAutoEnc,
652: 0,
653: "automatically encrypt output" },
654: { "autodecrypt",
655: "automatic decryption of data stream",
656: EncryptAutoDec,
657: 0,
658: "automatically decrypt input" },
659: { "verbose_encrypt",
660: "Toggle verbose encryption output",
661: EncryptVerbose,
662: 0,
663: "print verbose encryption output" },
664: { "encdebug",
665: "Toggle encryption debugging",
666: EncryptDebug,
667: 0,
668: "print encryption debugging information" },
1.1 deraadt 669: #endif
670: { "skiprc",
671: "don't read ~/.telnetrc file",
672: 0,
673: &skiprc,
1.10 art 674: "skip reading of ~/.telnetrc file" },
1.1 deraadt 675: { "binary",
676: "sending and receiving of binary data",
677: togbinary,
678: 0,
1.10 art 679: 0 },
1.1 deraadt 680: { "inbinary",
681: "receiving of binary data",
682: togrbinary,
683: 0,
1.10 art 684: 0 },
1.1 deraadt 685: { "outbinary",
686: "sending of binary data",
687: togxbinary,
688: 0,
1.10 art 689: 0 },
1.1 deraadt 690: { "crlf",
691: "sending carriage returns as telnet <CR><LF>",
692: togcrlf,
693: &crlf,
1.10 art 694: 0 },
1.1 deraadt 695: { "crmod",
696: "mapping of received carriage returns",
697: 0,
698: &crmod,
1.10 art 699: "map carriage return on output" },
1.1 deraadt 700: { "localchars",
701: "local recognition of certain control characters",
702: lclchars,
703: &localchars,
1.10 art 704: "recognize certain control characters" },
1.8 robin 705: { " ", "", 0, 0 }, /* empty line */
1.1 deraadt 706: #if defined(unix) && defined(TN3270)
707: { "apitrace",
708: "(debugging) toggle tracing of API transactions",
709: 0,
710: &apitrace,
1.8 robin 711: "trace API transactions", 0 },
1.1 deraadt 712: { "cursesdata",
713: "(debugging) toggle printing of hexadecimal curses data",
714: 0,
715: &cursesdata,
1.8 robin 716: "print hexadecimal representation of curses data", 0 },
1.1 deraadt 717: #endif /* defined(unix) && defined(TN3270) */
718: { "debug",
719: "debugging",
720: togdebug,
721: &debug,
1.10 art 722: "turn on socket level debugging" },
1.1 deraadt 723: { "netdata",
724: "printing of hexadecimal network data (debugging)",
725: 0,
726: &netdata,
1.10 art 727: "print hexadecimal representation of network traffic" },
1.1 deraadt 728: { "prettydump",
729: "output of \"netdata\" to user readable format (debugging)",
730: 0,
731: &prettydump,
1.10 art 732: "print user readable output for \"netdata\"" },
1.1 deraadt 733: { "options",
734: "viewing of options processing (debugging)",
735: 0,
736: &showoptions,
1.10 art 737: "show option processing" },
1.1 deraadt 738: #if defined(unix)
739: { "termdata",
740: "(debugging) toggle printing of hexadecimal terminal data",
741: 0,
742: &termdata,
1.10 art 743: "print hexadecimal representation of terminal traffic" },
1.1 deraadt 744: #endif /* defined(unix) */
745: { "?",
746: 0,
1.10 art 747: togglehelp },
1.1 deraadt 748: { "help",
749: 0,
1.10 art 750: togglehelp },
1.1 deraadt 751: { 0 }
752: };
753:
754: static int
755: togglehelp()
756: {
757: struct togglelist *c;
758:
759: for (c = Togglelist; c->name; c++) {
760: if (c->help) {
761: if (*c->help)
1.10 art 762: printf("%-15s toggle %s\r\n", c->name, c->help);
1.1 deraadt 763: else
1.10 art 764: printf("\r\n");
1.1 deraadt 765: }
766: }
1.10 art 767: printf("\r\n");
768: printf("%-15s %s\r\n", "?", "display help information");
1.1 deraadt 769: return 0;
770: }
771:
772: static void
773: settogglehelp(set)
774: int set;
775: {
776: struct togglelist *c;
777:
778: for (c = Togglelist; c->name; c++) {
779: if (c->help) {
780: if (*c->help)
1.10 art 781: printf("%-15s %s %s\r\n", c->name, set ? "enable" : "disable",
1.1 deraadt 782: c->help);
783: else
1.10 art 784: printf("\r\n");
1.1 deraadt 785: }
786: }
787: }
788:
789: #define GETTOGGLE(name) (struct togglelist *) \
790: genget(name, (char **) Togglelist, sizeof(struct togglelist))
791:
792: static int
793: toggle(argc, argv)
794: int argc;
795: char *argv[];
796: {
797: int retval = 1;
798: char *name;
799: struct togglelist *c;
800:
801: if (argc < 2) {
802: fprintf(stderr,
1.10 art 803: "Need an argument to 'toggle' command. 'toggle ?' for help.\r\n");
1.1 deraadt 804: return 0;
805: }
806: argc--;
807: argv++;
808: while (argc--) {
809: name = *argv++;
810: c = GETTOGGLE(name);
811: if (Ambiguous(c)) {
1.10 art 812: fprintf(stderr, "'%s': ambiguous argument ('toggle ?' for help).\r\n",
1.1 deraadt 813: name);
814: return 0;
815: } else if (c == 0) {
1.10 art 816: fprintf(stderr, "'%s': unknown argument ('toggle ?' for help).\r\n",
1.1 deraadt 817: name);
818: return 0;
1.8 robin 819: } else if (!connected && c->needconnect) {
1.10 art 820: printf("?Need to be connected first.\r\n");
821: printf("'send ?' for help\r\n");
1.8 robin 822: return 0;
1.1 deraadt 823: } else {
824: if (c->variable) {
825: *c->variable = !*c->variable; /* invert it */
826: if (c->actionexplanation) {
1.10 art 827: printf("%s %s.\r\n", *c->variable? "Will" : "Won't",
1.1 deraadt 828: c->actionexplanation);
829: }
830: }
831: if (c->handler) {
832: retval &= (*c->handler)(-1);
833: }
834: }
835: }
836: return retval;
837: }
838:
839: /*
840: * The following perform the "set" command.
841: */
842:
843: #ifdef USE_TERMIO
1.10 art 844: struct termios new_tc = { 0 };
1.1 deraadt 845: #endif
846:
847: struct setlist {
848: char *name; /* name */
849: char *help; /* help information */
850: void (*handler)();
851: cc_t *charp; /* where it is located at */
852: };
853:
854: static struct setlist Setlist[] = {
855: #ifdef KLUDGELINEMODE
856: { "echo", "character to toggle local echoing on/off", 0, &echoc },
857: #endif
858: { "escape", "character to escape back to telnet command mode", 0, &escape },
859: { "rlogin", "rlogin escape character", 0, &rlogin },
860: { "tracefile", "file to write trace information to", SetNetTrace, (cc_t *)NetTraceFile},
861: { " ", "" },
862: { " ", "The following need 'localchars' to be toggled true", 0, 0 },
1.10 art 863: { "flushoutput", "character to cause an Abort Output", 0, &termFlushChar },
864: { "interrupt", "character to cause an Interrupt Process", 0, &termIntChar },
865: { "quit", "character to cause an Abort process", 0, &termQuitChar },
866: { "eof", "character to cause an EOF ", 0, &termEofChar },
1.1 deraadt 867: { " ", "" },
868: { " ", "The following are for local editing in linemode", 0, 0 },
1.10 art 869: { "erase", "character to use to erase a character", 0, &termEraseChar },
870: { "kill", "character to use to erase a line", 0, &termKillChar },
871: { "lnext", "character to use for literal next", 0, &termLiteralNextChar },
872: { "susp", "character to cause a Suspend Process", 0, &termSuspChar },
873: { "reprint", "character to use for line reprint", 0, &termRprntChar },
874: { "worderase", "character to use to erase a word", 0, &termWerasChar },
875: { "start", "character to use for XON", 0, &termStartChar },
876: { "stop", "character to use for XOFF", 0, &termStopChar },
877: { "forw1", "alternate end of line character", 0, &termForw1Char },
878: { "forw2", "alternate end of line character", 0, &termForw2Char },
879: { "ayt", "alternate AYT character", 0, &termAytChar },
1.1 deraadt 880: { 0 }
881: };
882:
883: static struct setlist *
884: getset(name)
885: char *name;
886: {
887: return (struct setlist *)
888: genget(name, (char **) Setlist, sizeof(struct setlist));
889: }
890:
891: void
892: set_escape_char(s)
893: char *s;
894: {
895: if (rlogin != _POSIX_VDISABLE) {
896: rlogin = (s && *s) ? special(s) : _POSIX_VDISABLE;
1.10 art 897: printf("Telnet rlogin escape character is '%s'.\r\n",
1.1 deraadt 898: control(rlogin));
899: } else {
900: escape = (s && *s) ? special(s) : _POSIX_VDISABLE;
1.10 art 901: printf("Telnet escape character is '%s'.\r\n", control(escape));
1.1 deraadt 902: }
903: }
904:
905: static int
906: setcmd(argc, argv)
907: int argc;
908: char *argv[];
909: {
910: int value;
911: struct setlist *ct;
912: struct togglelist *c;
913:
914: if (argc < 2 || argc > 3) {
1.10 art 915: printf("Format is 'set Name Value'\r\n'set ?' for help.\r\n");
1.1 deraadt 916: return 0;
917: }
918: if ((argc == 2) && (isprefix(argv[1], "?") || isprefix(argv[1], "help"))) {
919: for (ct = Setlist; ct->name; ct++)
1.10 art 920: printf("%-15s %s\r\n", ct->name, ct->help);
921: printf("\r\n");
1.1 deraadt 922: settogglehelp(1);
1.10 art 923: printf("%-15s %s\r\n", "?", "display help information");
1.1 deraadt 924: return 0;
925: }
926:
927: ct = getset(argv[1]);
928: if (ct == 0) {
929: c = GETTOGGLE(argv[1]);
930: if (c == 0) {
1.10 art 931: fprintf(stderr, "'%s': unknown argument ('set ?' for help).\r\n",
1.1 deraadt 932: argv[1]);
933: return 0;
934: } else if (Ambiguous(c)) {
1.10 art 935: fprintf(stderr, "'%s': ambiguous argument ('set ?' for help).\r\n",
1.1 deraadt 936: argv[1]);
937: return 0;
1.8 robin 938: } else if (!connected && c->needconnect) {
1.10 art 939: printf("?Need to be connected first.\r\n");
940: printf("'send ?' for help\r\n");
1.8 robin 941: return 0;
1.1 deraadt 942: }
1.8 robin 943:
1.1 deraadt 944: if (c->variable) {
945: if ((argc == 2) || (strcmp("on", argv[2]) == 0))
946: *c->variable = 1;
947: else if (strcmp("off", argv[2]) == 0)
948: *c->variable = 0;
949: else {
1.10 art 950: printf("Format is 'set togglename [on|off]'\r\n'set ?' for help.\r\n");
1.1 deraadt 951: return 0;
952: }
953: if (c->actionexplanation) {
1.10 art 954: printf("%s %s.\r\n", *c->variable? "Will" : "Won't",
1.1 deraadt 955: c->actionexplanation);
956: }
957: }
958: if (c->handler)
959: (*c->handler)(1);
960: } else if (argc != 3) {
1.10 art 961: printf("Format is 'set Name Value'\r\n'set ?' for help.\r\n");
1.1 deraadt 962: return 0;
963: } else if (Ambiguous(ct)) {
1.10 art 964: fprintf(stderr, "'%s': ambiguous argument ('set ?' for help).\r\n",
1.1 deraadt 965: argv[1]);
966: return 0;
967: } else if (ct->handler) {
968: (*ct->handler)(argv[2]);
1.10 art 969: printf("%s set to \"%s\".\r\n", ct->name, (char *)ct->charp);
1.1 deraadt 970: } else {
971: if (strcmp("off", argv[2])) {
972: value = special(argv[2]);
973: } else {
974: value = _POSIX_VDISABLE;
975: }
976: *(ct->charp) = (cc_t)value;
1.10 art 977: printf("%s character is '%s'.\r\n", ct->name, control(*(ct->charp)));
1.1 deraadt 978: }
979: slc_check();
980: return 1;
981: }
982:
983: static int
984: unsetcmd(argc, argv)
985: int argc;
986: char *argv[];
987: {
988: struct setlist *ct;
989: struct togglelist *c;
990: register char *name;
991:
992: if (argc < 2) {
993: fprintf(stderr,
1.10 art 994: "Need an argument to 'unset' command. 'unset ?' for help.\r\n");
1.1 deraadt 995: return 0;
996: }
997: if (isprefix(argv[1], "?") || isprefix(argv[1], "help")) {
998: for (ct = Setlist; ct->name; ct++)
1.10 art 999: printf("%-15s %s\r\n", ct->name, ct->help);
1000: printf("\r\n");
1.1 deraadt 1001: settogglehelp(0);
1.10 art 1002: printf("%-15s %s\r\n", "?", "display help information");
1.1 deraadt 1003: return 0;
1004: }
1005:
1006: argc--;
1007: argv++;
1008: while (argc--) {
1009: name = *argv++;
1010: ct = getset(name);
1011: if (ct == 0) {
1012: c = GETTOGGLE(name);
1013: if (c == 0) {
1.10 art 1014: fprintf(stderr, "'%s': unknown argument ('unset ?' for help).\r\n",
1.1 deraadt 1015: name);
1016: return 0;
1017: } else if (Ambiguous(c)) {
1.10 art 1018: fprintf(stderr, "'%s': ambiguous argument ('unset ?' for help).\r\n",
1.1 deraadt 1019: name);
1020: return 0;
1021: }
1022: if (c->variable) {
1023: *c->variable = 0;
1024: if (c->actionexplanation) {
1.10 art 1025: printf("%s %s.\r\n", *c->variable? "Will" : "Won't",
1.1 deraadt 1026: c->actionexplanation);
1027: }
1028: }
1029: if (c->handler)
1030: (*c->handler)(0);
1031: } else if (Ambiguous(ct)) {
1.10 art 1032: fprintf(stderr, "'%s': ambiguous argument ('unset ?' for help).\r\n",
1.1 deraadt 1033: name);
1034: return 0;
1035: } else if (ct->handler) {
1036: (*ct->handler)(0);
1.10 art 1037: printf("%s reset to \"%s\".\r\n", ct->name, (char *)ct->charp);
1.1 deraadt 1038: } else {
1039: *(ct->charp) = _POSIX_VDISABLE;
1.10 art 1040: printf("%s character is '%s'.\r\n", ct->name, control(*(ct->charp)));
1.1 deraadt 1041: }
1042: }
1043: return 1;
1044: }
1045:
1046: /*
1047: * The following are the data structures and routines for the
1048: * 'mode' command.
1049: */
1050: #ifdef KLUDGELINEMODE
1051: extern int kludgelinemode;
1052:
1053: static int
1054: dokludgemode()
1055: {
1056: kludgelinemode = 1;
1057: send_wont(TELOPT_LINEMODE, 1);
1058: send_dont(TELOPT_SGA, 1);
1059: send_dont(TELOPT_ECHO, 1);
1.10 art 1060: return 1;
1.1 deraadt 1061: }
1062: #endif
1063:
1064: static int
1065: dolinemode()
1066: {
1067: #ifdef KLUDGELINEMODE
1068: if (kludgelinemode)
1069: send_dont(TELOPT_SGA, 1);
1070: #endif
1071: send_will(TELOPT_LINEMODE, 1);
1072: send_dont(TELOPT_ECHO, 1);
1073: return 1;
1074: }
1075:
1076: static int
1077: docharmode()
1078: {
1079: #ifdef KLUDGELINEMODE
1080: if (kludgelinemode)
1081: send_do(TELOPT_SGA, 1);
1082: else
1083: #endif
1084: send_wont(TELOPT_LINEMODE, 1);
1085: send_do(TELOPT_ECHO, 1);
1086: return 1;
1087: }
1088:
1089: static int
1090: dolmmode(bit, on)
1091: int bit, on;
1092: {
1093: unsigned char c;
1094: extern int linemode;
1095:
1096: if (my_want_state_is_wont(TELOPT_LINEMODE)) {
1.10 art 1097: printf("?Need to have LINEMODE option enabled first.\r\n");
1098: printf("'mode ?' for help.\r\n");
1.1 deraadt 1099: return 0;
1100: }
1101:
1102: if (on)
1103: c = (linemode | bit);
1104: else
1105: c = (linemode & ~bit);
1106: lm_mode(&c, 1, 1);
1107: return 1;
1108: }
1109:
1110: int
1.10 art 1111: tn_setmode(bit)
1.1 deraadt 1112: {
1113: return dolmmode(bit, 1);
1114: }
1115:
1116: int
1.10 art 1117: tn_clearmode(bit)
1.1 deraadt 1118: {
1119: return dolmmode(bit, 0);
1120: }
1121:
1122: struct modelist {
1123: char *name; /* command name */
1124: char *help; /* help string */
1125: int (*handler)(); /* routine which executes command */
1126: int needconnect; /* Do we need to be connected to execute? */
1127: int arg1;
1128: };
1129:
1.10 art 1130: static int modehelp __P((void));
1.1 deraadt 1131:
1132: static struct modelist ModeList[] = {
1133: { "character", "Disable LINEMODE option", docharmode, 1 },
1134: #ifdef KLUDGELINEMODE
1135: { "", "(or disable obsolete line-by-line mode)", 0 },
1136: #endif
1137: { "line", "Enable LINEMODE option", dolinemode, 1 },
1138: #ifdef KLUDGELINEMODE
1139: { "", "(or enable obsolete line-by-line mode)", 0 },
1140: #endif
1141: { "", "", 0 },
1142: { "", "These require the LINEMODE option to be enabled", 0 },
1.10 art 1143: { "isig", "Enable signal trapping", tn_setmode, 1, MODE_TRAPSIG },
1144: { "+isig", 0, tn_setmode, 1, MODE_TRAPSIG },
1145: { "-isig", "Disable signal trapping", tn_clearmode, 1, MODE_TRAPSIG },
1146: { "edit", "Enable character editing", tn_setmode, 1, MODE_EDIT },
1147: { "+edit", 0, tn_setmode, 1, MODE_EDIT },
1148: { "-edit", "Disable character editing", tn_clearmode, 1, MODE_EDIT },
1149: { "softtabs", "Enable tab expansion", tn_setmode, 1, MODE_SOFT_TAB },
1150: { "+softtabs", 0, tn_setmode, 1, MODE_SOFT_TAB },
1151: { "-softtabs", "Disable character editing", tn_clearmode, 1, MODE_SOFT_TAB },
1152: { "litecho", "Enable literal character echo", tn_setmode, 1, MODE_LIT_ECHO },
1153: { "+litecho", 0, tn_setmode, 1, MODE_LIT_ECHO },
1154: { "-litecho", "Disable literal character echo", tn_clearmode, 1, MODE_LIT_ECHO },
1.1 deraadt 1155: { "help", 0, modehelp, 0 },
1156: #ifdef KLUDGELINEMODE
1157: { "kludgeline", 0, dokludgemode, 1 },
1158: #endif
1159: { "", "", 0 },
1160: { "?", "Print help information", modehelp, 0 },
1161: { 0 },
1162: };
1163:
1164:
1.10 art 1165: static int
1.1 deraadt 1166: modehelp()
1167: {
1168: struct modelist *mt;
1169:
1.10 art 1170: printf("format is: 'mode Mode', where 'Mode' is one of:\r\n\r\n");
1.1 deraadt 1171: for (mt = ModeList; mt->name; mt++) {
1172: if (mt->help) {
1173: if (*mt->help)
1.10 art 1174: printf("%-15s %s\r\n", mt->name, mt->help);
1.1 deraadt 1175: else
1.10 art 1176: printf("\r\n");
1.1 deraadt 1177: }
1178: }
1179: return 0;
1180: }
1181:
1182: #define GETMODECMD(name) (struct modelist *) \
1183: genget(name, (char **) ModeList, sizeof(struct modelist))
1184:
1185: static int
1186: modecmd(argc, argv)
1187: int argc;
1188: char *argv[];
1189: {
1190: struct modelist *mt;
1191:
1192: if (argc != 2) {
1.10 art 1193: printf("'mode' command requires an argument\r\n");
1194: printf("'mode ?' for help.\r\n");
1.1 deraadt 1195: } else if ((mt = GETMODECMD(argv[1])) == 0) {
1.10 art 1196: fprintf(stderr, "Unknown mode '%s' ('mode ?' for help).\r\n", argv[1]);
1.1 deraadt 1197: } else if (Ambiguous(mt)) {
1.10 art 1198: fprintf(stderr, "Ambiguous mode '%s' ('mode ?' for help).\r\n", argv[1]);
1.1 deraadt 1199: } else if (mt->needconnect && !connected) {
1.10 art 1200: printf("?Need to be connected first.\r\n");
1201: printf("'mode ?' for help.\r\n");
1.1 deraadt 1202: } else if (mt->handler) {
1203: return (*mt->handler)(mt->arg1);
1204: }
1205: return 0;
1206: }
1207:
1208: /*
1209: * The following data structures and routines implement the
1210: * "display" command.
1211: */
1212:
1213: static int
1214: display(argc, argv)
1215: int argc;
1216: char *argv[];
1217: {
1218: struct togglelist *tl;
1219: struct setlist *sl;
1220:
1221: #define dotog(tl) if (tl->variable && tl->actionexplanation) { \
1222: if (*tl->variable) { \
1223: printf("will"); \
1224: } else { \
1225: printf("won't"); \
1226: } \
1.10 art 1227: printf(" %s.\r\n", tl->actionexplanation); \
1.1 deraadt 1228: }
1229:
1230: #define doset(sl) if (sl->name && *sl->name != ' ') { \
1231: if (sl->handler == 0) \
1.10 art 1232: printf("%-15s [%s]\r\n", sl->name, control(*sl->charp)); \
1.1 deraadt 1233: else \
1.10 art 1234: printf("%-15s \"%s\"\r\n", sl->name, (char *)sl->charp); \
1.1 deraadt 1235: }
1236:
1237: if (argc == 1) {
1238: for (tl = Togglelist; tl->name; tl++) {
1239: dotog(tl);
1240: }
1.10 art 1241: printf("\r\n");
1.1 deraadt 1242: for (sl = Setlist; sl->name; sl++) {
1243: doset(sl);
1244: }
1245: } else {
1246: int i;
1247:
1248: for (i = 1; i < argc; i++) {
1249: sl = getset(argv[i]);
1250: tl = GETTOGGLE(argv[i]);
1251: if (Ambiguous(sl) || Ambiguous(tl)) {
1.10 art 1252: printf("?Ambiguous argument '%s'.\r\n", argv[i]);
1.1 deraadt 1253: return 0;
1254: } else if (!sl && !tl) {
1.10 art 1255: printf("?Unknown argument '%s'.\r\n", argv[i]);
1.1 deraadt 1256: return 0;
1257: } else {
1258: if (tl) {
1259: dotog(tl);
1260: }
1261: if (sl) {
1262: doset(sl);
1263: }
1264: }
1265: }
1266: }
1267: /*@*/optionstatus();
1.10 art 1268: #if defined(ENCRYPTION)
1269: EncryptStatus();
1270: #endif
1.1 deraadt 1271: return 1;
1272: #undef doset
1273: #undef dotog
1274: }
1.10 art 1275:
1.1 deraadt 1276: /*
1277: * The following are the data structures, and many of the routines,
1278: * relating to command processing.
1279: */
1280:
1281: /*
1282: * Set the escape character.
1283: */
1284: static int
1285: setescape(argc, argv)
1286: int argc;
1287: char *argv[];
1288: {
1289: register char *arg;
1290: char buf[50];
1291:
1292: printf(
1.10 art 1293: "Deprecated usage - please use 'set escape%s%s' in the future.\r\n",
1.1 deraadt 1294: (argc > 2)? " ":"", (argc > 2)? argv[1]: "");
1295: if (argc > 2)
1296: arg = argv[1];
1297: else {
1298: printf("new escape character: ");
1299: (void) fgets(buf, sizeof(buf), stdin);
1300: arg = buf;
1301: }
1302: if (arg[0] != '\0')
1303: escape = arg[0];
1304: if (!In3270) {
1.10 art 1305: printf("Escape character is '%s'.\r\n", control(escape));
1.1 deraadt 1306: }
1307: (void) fflush(stdout);
1308: return 1;
1309: }
1310:
1311: /*VARARGS*/
1312: static int
1313: togcrmod()
1314: {
1315: crmod = !crmod;
1.10 art 1316: printf("Deprecated usage - please use 'toggle crmod' in the future.\r\n");
1317: printf("%s map carriage return on output.\r\n", crmod ? "Will" : "Won't");
1.1 deraadt 1318: (void) fflush(stdout);
1319: return 1;
1320: }
1321:
1322: /*VARARGS*/
1.11 deraadt 1323: int
1.10 art 1324: telnetsuspend()
1.1 deraadt 1325: {
1326: #ifdef SIGTSTP
1327: setcommandmode();
1328: {
1329: long oldrows, oldcols, newrows, newcols, err;
1330:
1331: err = (TerminalWindowSize(&oldrows, &oldcols) == 0) ? 1 : 0;
1332: (void) kill(0, SIGTSTP);
1333: /*
1334: * If we didn't get the window size before the SUSPEND, but we
1.3 niklas 1335: * can get them now (?), then send the NAWS to make sure that
1.1 deraadt 1336: * we are set up for the right window size.
1337: */
1338: if (TerminalWindowSize(&newrows, &newcols) && connected &&
1339: (err || ((oldrows != newrows) || (oldcols != newcols)))) {
1340: sendnaws();
1341: }
1342: }
1343: /* reget parameters in case they were changed */
1344: TerminalSaveState();
1345: setconnmode(0);
1346: #else
1.10 art 1347: printf("Suspend is not supported. Try the '!' command instead\r\n");
1.1 deraadt 1348: #endif
1349: return 1;
1350: }
1351:
1352: #if !defined(TN3270)
1353: /*ARGSUSED*/
1354: int
1355: shell(argc, argv)
1356: int argc;
1357: char *argv[];
1358: {
1359: long oldrows, oldcols, newrows, newcols, err;
1360:
1361: setcommandmode();
1362:
1363: err = (TerminalWindowSize(&oldrows, &oldcols) == 0) ? 1 : 0;
1364: switch(vfork()) {
1365: case -1:
1.10 art 1366: perror("Fork failed\r\n");
1.1 deraadt 1367: break;
1368:
1369: case 0:
1370: {
1371: /*
1372: * Fire up the shell in the child.
1373: */
1374: register char *shellp, *shellname;
1375:
1376: shellp = getenv("SHELL");
1377: if (shellp == NULL)
1378: shellp = "/bin/sh";
1.3 niklas 1379: if ((shellname = strrchr(shellp, '/')) == 0)
1.1 deraadt 1380: shellname = shellp;
1381: else
1382: shellname++;
1383: if (argc > 1)
1384: execl(shellp, shellname, "-c", &saveline[1], 0);
1385: else
1386: execl(shellp, shellname, 0);
1387: perror("Execl");
1388: _exit(1);
1389: }
1390: default:
1391: (void)wait((int *)0); /* Wait for the shell to complete */
1392:
1393: if (TerminalWindowSize(&newrows, &newcols) && connected &&
1394: (err || ((oldrows != newrows) || (oldcols != newcols)))) {
1395: sendnaws();
1396: }
1397: break;
1398: }
1399: return 1;
1400: }
1401: #else /* !defined(TN3270) */
1402: extern int shell();
1403: #endif /* !defined(TN3270) */
1404:
1405: /*VARARGS*/
1406: static
1407: bye(argc, argv)
1408: int argc; /* Number of arguments */
1409: char *argv[]; /* arguments */
1410: {
1411: extern int resettermname;
1412:
1413: if (connected) {
1414: (void) shutdown(net, 2);
1.10 art 1415: printf("Connection closed.\r\n");
1.1 deraadt 1416: (void) NetClose(net);
1417: connected = 0;
1418: resettermname = 1;
1.10 art 1419: #if defined(AUTHENTICATION) || defined(ENCRYPTION)
1.1 deraadt 1420: auth_encrypt_connect(connected);
1421: #endif /* defined(AUTHENTICATION) */
1422: /* reset options */
1423: tninit();
1424: #if defined(TN3270)
1425: SetIn3270(); /* Get out of 3270 mode */
1426: #endif /* defined(TN3270) */
1427: }
1428: if ((argc != 2) || (strcmp(argv[1], "fromquit") != 0)) {
1429: longjmp(toplevel, 1);
1430: /* NOTREACHED */
1431: }
1.10 art 1432: return 0; /* NOTREACHED */
1.1 deraadt 1433: }
1434:
1435: /*VARARGS*/
1.10 art 1436: int
1.1 deraadt 1437: quit()
1438: {
1439: (void) call(bye, "bye", "fromquit", 0);
1440: Exit(0);
1.10 art 1441: return 0; /*NOTREACHED*/
1.1 deraadt 1442: }
1443:
1444: /*VARARGS*/
1.10 art 1445: static int
1.1 deraadt 1446: logout()
1447: {
1448: send_do(TELOPT_LOGOUT, 1);
1449: (void) netflush();
1450: return 1;
1451: }
1452:
1453:
1454: /*
1455: * The SLC command.
1456: */
1457:
1458: struct slclist {
1459: char *name;
1460: char *help;
1461: void (*handler)();
1462: int arg;
1463: };
1464:
1465: static void slc_help();
1466:
1467: struct slclist SlcList[] = {
1468: { "export", "Use local special character definitions",
1469: slc_mode_export, 0 },
1470: { "import", "Use remote special character definitions",
1471: slc_mode_import, 1 },
1472: { "check", "Verify remote special character definitions",
1473: slc_mode_import, 0 },
1474: { "help", 0, slc_help, 0 },
1475: { "?", "Print help information", slc_help, 0 },
1476: { 0 },
1477: };
1478:
1479: static void
1480: slc_help()
1481: {
1482: struct slclist *c;
1483:
1484: for (c = SlcList; c->name; c++) {
1485: if (c->help) {
1486: if (*c->help)
1.10 art 1487: printf("%-15s %s\r\n", c->name, c->help);
1.1 deraadt 1488: else
1.10 art 1489: printf("\r\n");
1.1 deraadt 1490: }
1491: }
1492: }
1493:
1494: static struct slclist *
1495: getslc(name)
1496: char *name;
1497: {
1498: return (struct slclist *)
1499: genget(name, (char **) SlcList, sizeof(struct slclist));
1500: }
1501:
1502: static
1503: slccmd(argc, argv)
1504: int argc;
1505: char *argv[];
1506: {
1507: struct slclist *c;
1508:
1509: if (argc != 2) {
1510: fprintf(stderr,
1.10 art 1511: "Need an argument to 'slc' command. 'slc ?' for help.\r\n");
1.1 deraadt 1512: return 0;
1513: }
1514: c = getslc(argv[1]);
1515: if (c == 0) {
1.10 art 1516: fprintf(stderr, "'%s': unknown argument ('slc ?' for help).\r\n",
1.1 deraadt 1517: argv[1]);
1.3 niklas 1518: return 0;
1.1 deraadt 1519: }
1520: if (Ambiguous(c)) {
1.10 art 1521: fprintf(stderr, "'%s': ambiguous argument ('slc ?' for help).\r\n",
1.1 deraadt 1522: argv[1]);
1.3 niklas 1523: return 0;
1.1 deraadt 1524: }
1525: (*c->handler)(c->arg);
1526: slcstate();
1527: return 1;
1528: }
1529:
1530: /*
1531: * The ENVIRON command.
1532: */
1533:
1534: struct envlist {
1535: char *name;
1536: char *help;
1537: void (*handler)();
1538: int narg;
1539: };
1540:
1.10 art 1541: static void env_help P((void));
1.1 deraadt 1542:
1543: struct envlist EnvList[] = {
1544: { "define", "Define an environment variable",
1545: (void (*)())env_define, 2 },
1546: { "undefine", "Undefine an environment variable",
1547: env_undefine, 1 },
1548: { "export", "Mark an environment variable for automatic export",
1549: env_export, 1 },
1550: { "unexport", "Don't mark an environment variable for automatic export",
1551: env_unexport, 1 },
1552: { "send", "Send an environment variable", env_send, 1 },
1553: { "list", "List the current environment variables",
1554: env_list, 0 },
1555: #if defined(OLD_ENVIRON) && defined(ENV_HACK)
1556: { "varval", "Reverse VAR and VALUE (auto, right, wrong, status)",
1557: env_varval, 1 },
1558: #endif
1559: { "help", 0, env_help, 0 },
1560: { "?", "Print help information", env_help, 0 },
1561: { 0 },
1562: };
1563:
1564: static void
1565: env_help()
1566: {
1567: struct envlist *c;
1568:
1569: for (c = EnvList; c->name; c++) {
1570: if (c->help) {
1571: if (*c->help)
1.10 art 1572: printf("%-15s %s\r\n", c->name, c->help);
1.1 deraadt 1573: else
1.10 art 1574: printf("\r\n");
1.1 deraadt 1575: }
1576: }
1577: }
1578:
1579: static struct envlist *
1580: getenvcmd(name)
1581: char *name;
1582: {
1583: return (struct envlist *)
1584: genget(name, (char **) EnvList, sizeof(struct envlist));
1585: }
1586:
1587: env_cmd(argc, argv)
1588: int argc;
1589: char *argv[];
1590: {
1591: struct envlist *c;
1592:
1593: if (argc < 2) {
1594: fprintf(stderr,
1.10 art 1595: "Need an argument to 'environ' command. 'environ ?' for help.\r\n");
1.1 deraadt 1596: return 0;
1597: }
1598: c = getenvcmd(argv[1]);
1599: if (c == 0) {
1.10 art 1600: fprintf(stderr, "'%s': unknown argument ('environ ?' for help).\r\n",
1.1 deraadt 1601: argv[1]);
1.3 niklas 1602: return 0;
1.1 deraadt 1603: }
1604: if (Ambiguous(c)) {
1.10 art 1605: fprintf(stderr, "'%s': ambiguous argument ('environ ?' for help).\r\n",
1.1 deraadt 1606: argv[1]);
1.3 niklas 1607: return 0;
1.1 deraadt 1608: }
1609: if (c->narg + 2 != argc) {
1610: fprintf(stderr,
1.10 art 1611: "Need %s%d argument%s to 'environ %s' command. 'environ ?' for help.\r\n",
1.1 deraadt 1612: c->narg < argc + 2 ? "only " : "",
1613: c->narg, c->narg == 1 ? "" : "s", c->name);
1614: return 0;
1615: }
1616: (*c->handler)(argv[2], argv[3]);
1617: return 1;
1618: }
1619:
1620: struct env_lst {
1621: struct env_lst *next; /* pointer to next structure */
1622: struct env_lst *prev; /* pointer to previous structure */
1623: unsigned char *var; /* pointer to variable name */
1624: unsigned char *value; /* pointer to variable value */
1625: int export; /* 1 -> export with default list of variables */
1626: int welldefined; /* A well defined variable */
1627: };
1628:
1629: struct env_lst envlisthead;
1630:
1631: struct env_lst *
1632: env_find(var)
1633: unsigned char *var;
1634: {
1635: register struct env_lst *ep;
1636:
1637: for (ep = envlisthead.next; ep; ep = ep->next) {
1638: if (strcmp((char *)ep->var, (char *)var) == 0)
1639: return(ep);
1640: }
1641: return(NULL);
1642: }
1643:
1644: void
1645: env_init()
1646: {
1647: extern char **environ;
1.10 art 1648: char **epp, *cp;
1649: struct env_lst *ep;
1.1 deraadt 1650:
1651: for (epp = environ; *epp; epp++) {
1.10 art 1652: if ((cp = strchr(*epp, '='))) {
1.1 deraadt 1653: *cp = '\0';
1654: ep = env_define((unsigned char *)*epp,
1655: (unsigned char *)cp+1);
1656: ep->export = 0;
1657: *cp = '=';
1658: }
1659: }
1660: /*
1661: * Special case for DISPLAY variable. If it is ":0.0" or
1662: * "unix:0.0", we have to get rid of "unix" and insert our
1663: * hostname.
1664: */
1665: if ((ep = env_find("DISPLAY"))
1666: && ((*ep->value == ':')
1.3 niklas 1667: || (strncmp((char *)ep->value, "unix:", 5) == 0))) {
1.1 deraadt 1668: char hbuf[256+1];
1.3 niklas 1669: char *cp2 = strchr((char *)ep->value, ':');
1.1 deraadt 1670:
1671: gethostname(hbuf, 256);
1672: hbuf[256] = '\0';
1.10 art 1673:
1674: /* If this is not the full name, try to get it via DNS */
1675: if (strchr(hbuf, '.') == 0) {
1676: struct hostent *he = gethostbyname(hbuf);
1677: if (he != 0)
1678: strncpy(hbuf, he->h_name, 256);
1679: hbuf[256] = '\0';
1680: }
1681:
1682: asprintf (&cp, "%s%s", hbuf, cp2);
1.14 ! art 1683: if (cp == NULL)
! 1684: err(1, "asprintf");
1.10 art 1685:
1.1 deraadt 1686: free(ep->value);
1687: ep->value = (unsigned char *)cp;
1688: }
1689: /*
1690: * If USER is not defined, but LOGNAME is, then add
1691: * USER with the value from LOGNAME. By default, we
1692: * don't export the USER variable.
1693: */
1694: if ((env_find("USER") == NULL) && (ep = env_find("LOGNAME"))) {
1695: env_define((unsigned char *)"USER", ep->value);
1696: env_unexport((unsigned char *)"USER");
1697: }
1698: env_export((unsigned char *)"DISPLAY");
1699: env_export((unsigned char *)"PRINTER");
1.10 art 1700: env_export((unsigned char *)"XAUTHORITY");
1.1 deraadt 1701: }
1702:
1703: struct env_lst *
1704: env_define(var, value)
1705: unsigned char *var, *value;
1706: {
1707: register struct env_lst *ep;
1708:
1.10 art 1709: if ((ep = env_find(var))) {
1.1 deraadt 1710: if (ep->var)
1711: free(ep->var);
1712: if (ep->value)
1713: free(ep->value);
1714: } else {
1.14 ! art 1715: if ((ep = malloc(sizeof(struct env_lst))) == NULL)
! 1716: err(1, "malloc");
1.1 deraadt 1717: ep->next = envlisthead.next;
1718: envlisthead.next = ep;
1719: ep->prev = &envlisthead;
1720: if (ep->next)
1721: ep->next->prev = ep;
1722: }
1.10 art 1723: ep->welldefined = opt_welldefined((char *)var);
1.1 deraadt 1724: ep->export = 1;
1.14 ! art 1725: if ((ep->var = strdup((char *)var)) == NULL)
! 1726: err(1, "strdup");
! 1727: if ((ep->value = strdup((char *)value)) == NULL)
! 1728: err(1, "strdup");
1.1 deraadt 1729: return(ep);
1730: }
1731:
1732: void
1733: env_undefine(var)
1734: unsigned char *var;
1735: {
1736: register struct env_lst *ep;
1737:
1.10 art 1738: if ((ep = env_find(var))) {
1.1 deraadt 1739: ep->prev->next = ep->next;
1740: if (ep->next)
1741: ep->next->prev = ep->prev;
1742: if (ep->var)
1743: free(ep->var);
1744: if (ep->value)
1745: free(ep->value);
1746: free(ep);
1747: }
1748: }
1749:
1750: void
1751: env_export(var)
1752: unsigned char *var;
1753: {
1754: register struct env_lst *ep;
1755:
1.10 art 1756: if ((ep = env_find(var)))
1.1 deraadt 1757: ep->export = 1;
1758: }
1759:
1760: void
1761: env_unexport(var)
1762: unsigned char *var;
1763: {
1764: register struct env_lst *ep;
1765:
1766: if (ep = env_find(var))
1767: ep->export = 0;
1768: }
1769:
1770: void
1771: env_send(var)
1772: unsigned char *var;
1773: {
1774: register struct env_lst *ep;
1775:
1.3 niklas 1776: if (my_state_is_wont(TELOPT_NEW_ENVIRON)
1.1 deraadt 1777: #ifdef OLD_ENVIRON
1778: && my_state_is_wont(TELOPT_OLD_ENVIRON)
1779: #endif
1780: ) {
1781: fprintf(stderr,
1.10 art 1782: "Cannot send '%s': Telnet ENVIRON option not enabled\r\n",
1.1 deraadt 1783: var);
1784: return;
1785: }
1786: ep = env_find(var);
1787: if (ep == 0) {
1.10 art 1788: fprintf(stderr, "Cannot send '%s': variable not defined\r\n",
1.1 deraadt 1789: var);
1790: return;
1791: }
1792: env_opt_start_info();
1793: env_opt_add(ep->var);
1794: env_opt_end(0);
1795: }
1796:
1797: void
1798: env_list()
1799: {
1800: register struct env_lst *ep;
1801:
1802: for (ep = envlisthead.next; ep; ep = ep->next) {
1.10 art 1803: printf("%c %-20s %s\r\n", ep->export ? '*' : ' ',
1.1 deraadt 1804: ep->var, ep->value);
1805: }
1806: }
1807:
1808: unsigned char *
1809: env_default(init, welldefined)
1810: int init;
1811: {
1812: static struct env_lst *nep = NULL;
1813:
1814: if (init) {
1815: nep = &envlisthead;
1.10 art 1816: return NULL;
1.1 deraadt 1817: }
1818: if (nep) {
1.10 art 1819: while ((nep = nep->next)) {
1.1 deraadt 1820: if (nep->export && (nep->welldefined == welldefined))
1821: return(nep->var);
1822: }
1823: }
1824: return(NULL);
1825: }
1826:
1827: unsigned char *
1828: env_getvalue(var)
1829: unsigned char *var;
1830: {
1831: register struct env_lst *ep;
1832:
1.10 art 1833: if ((ep = env_find(var)))
1.1 deraadt 1834: return(ep->value);
1835: return(NULL);
1836: }
1837:
1838: #if defined(OLD_ENVIRON) && defined(ENV_HACK)
1839: void
1840: env_varval(what)
1841: unsigned char *what;
1842: {
1843: extern int old_env_var, old_env_value, env_auto;
1844: int len = strlen((char *)what);
1845:
1846: if (len == 0)
1847: goto unknown;
1848:
1849: if (strncasecmp((char *)what, "status", len) == 0) {
1850: if (env_auto)
1851: printf("%s%s", "VAR and VALUE are/will be ",
1.10 art 1852: "determined automatically\r\n");
1.1 deraadt 1853: if (old_env_var == OLD_ENV_VAR)
1.10 art 1854: printf("VAR and VALUE set to correct definitions\r\n");
1.1 deraadt 1855: else
1.10 art 1856: printf("VAR and VALUE definitions are reversed\r\n");
1.1 deraadt 1857: } else if (strncasecmp((char *)what, "auto", len) == 0) {
1858: env_auto = 1;
1859: old_env_var = OLD_ENV_VALUE;
1860: old_env_value = OLD_ENV_VAR;
1861: } else if (strncasecmp((char *)what, "right", len) == 0) {
1862: env_auto = 0;
1863: old_env_var = OLD_ENV_VAR;
1864: old_env_value = OLD_ENV_VALUE;
1865: } else if (strncasecmp((char *)what, "wrong", len) == 0) {
1866: env_auto = 0;
1867: old_env_var = OLD_ENV_VALUE;
1868: old_env_value = OLD_ENV_VAR;
1869: } else {
1870: unknown:
1.10 art 1871: printf("Unknown \"varval\" command. (\"auto\", \"right\", \"wrong\", \"status\")\r\n");
1.1 deraadt 1872: }
1873: }
1874: #endif
1875:
1876: #if defined(AUTHENTICATION)
1877: /*
1878: * The AUTHENTICATE command.
1879: */
1880:
1881: struct authlist {
1882: char *name;
1883: char *help;
1884: int (*handler)();
1885: int narg;
1886: };
1887:
1888: static int
1889: auth_help P((void));
1890:
1891: struct authlist AuthList[] = {
1892: { "status", "Display current status of authentication information",
1893: auth_status, 0 },
1894: { "disable", "Disable an authentication type ('auth disable ?' for more)",
1895: auth_disable, 1 },
1896: { "enable", "Enable an authentication type ('auth enable ?' for more)",
1897: auth_enable, 1 },
1898: { "help", 0, auth_help, 0 },
1899: { "?", "Print help information", auth_help, 0 },
1900: { 0 },
1901: };
1902:
1903: static int
1904: auth_help()
1905: {
1906: struct authlist *c;
1907:
1908: for (c = AuthList; c->name; c++) {
1909: if (c->help) {
1910: if (*c->help)
1.10 art 1911: printf("%-15s %s\r\n", c->name, c->help);
1.1 deraadt 1912: else
1.10 art 1913: printf("\r\n");
1.1 deraadt 1914: }
1915: }
1916: return 0;
1917: }
1918:
1919: auth_cmd(argc, argv)
1920: int argc;
1921: char *argv[];
1922: {
1923: struct authlist *c;
1924:
1.3 niklas 1925: if (argc < 2) {
1926: fprintf(stderr,
1.10 art 1927: "Need an argument to 'auth' command. 'auth ?' for help.\r\n");
1.3 niklas 1928: return 0;
1929: }
1930:
1.1 deraadt 1931: c = (struct authlist *)
1932: genget(argv[1], (char **) AuthList, sizeof(struct authlist));
1933: if (c == 0) {
1.10 art 1934: fprintf(stderr, "'%s': unknown argument ('auth ?' for help).\r\n",
1.1 deraadt 1935: argv[1]);
1.3 niklas 1936: return 0;
1.1 deraadt 1937: }
1938: if (Ambiguous(c)) {
1.10 art 1939: fprintf(stderr, "'%s': ambiguous argument ('auth ?' for help).\r\n",
1.1 deraadt 1940: argv[1]);
1.3 niklas 1941: return 0;
1.1 deraadt 1942: }
1943: if (c->narg + 2 != argc) {
1944: fprintf(stderr,
1.10 art 1945: "Need %s%d argument%s to 'auth %s' command. 'auth ?' for help.\r\n",
1.1 deraadt 1946: c->narg < argc + 2 ? "only " : "",
1947: c->narg, c->narg == 1 ? "" : "s", c->name);
1948: return 0;
1949: }
1950: return((*c->handler)(argv[2], argv[3]));
1951: }
1952: #endif
1953:
1.10 art 1954: #if defined(ENCRYPTION)
1955: /*
1956: * The ENCRYPT command.
1957: */
1958:
1959: struct encryptlist {
1960: char *name;
1961: char *help;
1962: int (*handler)();
1963: int needconnect;
1964: int minarg;
1965: int maxarg;
1966: };
1967:
1968: static int
1969: EncryptHelp (void);
1970:
1971: struct encryptlist EncryptList[] = {
1972: { "enable", "Enable encryption. ('encrypt enable ?' for more)",
1973: EncryptEnable, 1, 1, 2 },
1974: { "disable", "Disable encryption. ('encrypt enable ?' for more)",
1975: EncryptDisable, 0, 1, 2 },
1976: { "type", "Set encryptiong type. ('encrypt type ?' for more)",
1977: EncryptType, 0, 1, 1 },
1978: { "start", "Start encryption. ('encrypt start ?' for more)",
1979: EncryptStart, 1, 0, 1 },
1980: { "stop", "Stop encryption. ('encrypt stop ?' for more)",
1981: EncryptStop, 1, 0, 1 },
1982: { "input", "Start encrypting the input stream",
1983: EncryptStartInput, 1, 0, 0 },
1984: { "-input", "Stop encrypting the input stream",
1985: EncryptStopInput, 1, 0, 0 },
1986: { "output", "Start encrypting the output stream",
1987: EncryptStartOutput, 1, 0, 0 },
1988: { "-output", "Stop encrypting the output stream",
1989: EncryptStopOutput, 1, 0, 0 },
1990:
1991: { "status", "Display current status of authentication information",
1992: EncryptStatus, 0, 0, 0 },
1993: { "help", 0, EncryptHelp, 0, 0, 0 },
1994: { "?", "Print help information", EncryptHelp, 0, 0, 0 },
1995: { 0 },
1996: };
1997:
1998: static int
1999: EncryptHelp()
2000: {
2001: struct encryptlist *c;
2002:
2003: for (c = EncryptList; c->name; c++) {
2004: if (c->help) {
2005: if (*c->help)
2006: printf("%-15s %s\r\n", c->name, c->help);
2007: else
2008: printf("\r\n");
2009: }
2010: }
2011: return 0;
2012: }
2013:
2014: static int
2015: encrypt_cmd(int argc, char **argv)
2016: {
2017: struct encryptlist *c;
1.13 art 2018:
2019: if (argc < 2) {
2020: fprintf(stderr, "Need at least one argument for 'encrypt' command.\n");
2021: fprintf(stderr, "('encrypt ?' for help)\n");
2022: return 0;
2023: }
2024:
1.10 art 2025: c = (struct encryptlist *)
2026: genget(argv[1], (char **) EncryptList, sizeof(struct encryptlist));
2027: if (c == 0) {
2028: fprintf(stderr, "'%s': unknown argument ('encrypt ?' for help).\r\n",
2029: argv[1]);
2030: return 0;
2031: }
2032: if (Ambiguous(c)) {
2033: fprintf(stderr, "'%s': ambiguous argument ('encrypt ?' for help).\r\n",
2034: argv[1]);
2035: return 0;
2036: }
2037: argc -= 2;
2038: if (argc < c->minarg || argc > c->maxarg) {
2039: if (c->minarg == c->maxarg) {
2040: fprintf(stderr, "Need %s%d argument%s ",
2041: c->minarg < argc ? "only " : "", c->minarg,
2042: c->minarg == 1 ? "" : "s");
2043: } else {
2044: fprintf(stderr, "Need %s%d-%d arguments ",
2045: c->maxarg < argc ? "only " : "", c->minarg, c->maxarg);
2046: }
2047: fprintf(stderr, "to 'encrypt %s' command. 'encrypt ?' for help.\r\n",
2048: c->name);
2049: return 0;
2050: }
2051: if (c->needconnect && !connected) {
2052: if (!(argc && (isprefix(argv[2], "help") || isprefix(argv[2], "?")))) {
2053: printf("?Need to be connected first.\r\n");
2054: return 0;
2055: }
2056: }
2057: return ((*c->handler)(argc > 0 ? argv[2] : 0,
2058: argc > 1 ? argv[3] : 0,
2059: argc > 2 ? argv[4] : 0));
2060: }
2061: #endif
1.1 deraadt 2062:
2063: #if defined(unix) && defined(TN3270)
2064: static void
2065: filestuff(fd)
2066: int fd;
2067: {
2068: int res;
2069:
2070: #ifdef F_GETOWN
2071: setconnmode(0);
2072: res = fcntl(fd, F_GETOWN, 0);
2073: setcommandmode();
2074:
2075: if (res == -1) {
2076: perror("fcntl");
2077: return;
2078: }
1.10 art 2079: printf("\tOwner is %d.\r\n", res);
1.1 deraadt 2080: #endif
2081:
2082: setconnmode(0);
2083: res = fcntl(fd, F_GETFL, 0);
2084: setcommandmode();
2085:
2086: if (res == -1) {
2087: perror("fcntl");
2088: return;
2089: }
2090: #ifdef notdef
1.10 art 2091: printf("\tFlags are 0x%x: %s\r\n", res, decodeflags(res));
1.1 deraadt 2092: #endif
2093: }
2094: #endif /* defined(unix) && defined(TN3270) */
2095:
2096: /*
2097: * Print status about the connection.
2098: */
2099: /*ARGSUSED*/
2100: static
2101: status(argc, argv)
2102: int argc;
2103: char *argv[];
2104: {
2105: if (connected) {
1.10 art 2106: printf("Connected to %s.\r\n", hostname);
1.1 deraadt 2107: if ((argc < 2) || strcmp(argv[1], "notmuch")) {
2108: int mode = getconnmode();
2109:
2110: if (my_want_state_is_will(TELOPT_LINEMODE)) {
1.10 art 2111: printf("Operating with LINEMODE option\r\n");
2112: printf("%s line editing\r\n", (mode&MODE_EDIT) ? "Local" : "No");
2113: printf("%s catching of signals\r\n",
1.1 deraadt 2114: (mode&MODE_TRAPSIG) ? "Local" : "No");
2115: slcstate();
2116: #ifdef KLUDGELINEMODE
2117: } else if (kludgelinemode && my_want_state_is_dont(TELOPT_SGA)) {
1.10 art 2118: printf("Operating in obsolete linemode\r\n");
1.1 deraadt 2119: #endif
2120: } else {
1.10 art 2121: printf("Operating in single character mode\r\n");
1.1 deraadt 2122: if (localchars)
1.10 art 2123: printf("Catching signals locally\r\n");
1.1 deraadt 2124: }
1.10 art 2125: printf("%s character echo\r\n", (mode&MODE_ECHO) ? "Local" : "Remote");
1.1 deraadt 2126: if (my_want_state_is_will(TELOPT_LFLOW))
1.10 art 2127: printf("%s flow control\r\n", (mode&MODE_FLOW) ? "Local" : "No");
2128: #if defined(ENCRYPTION)
2129: encrypt_display();
2130: #endif
1.1 deraadt 2131: }
2132: } else {
1.10 art 2133: printf("No connection.\r\n");
1.1 deraadt 2134: }
2135: # if !defined(TN3270)
1.10 art 2136: printf("Escape character is '%s'.\r\n", control(escape));
1.1 deraadt 2137: (void) fflush(stdout);
2138: # else /* !defined(TN3270) */
2139: if ((!In3270) && ((argc < 2) || strcmp(argv[1], "notmuch"))) {
1.10 art 2140: printf("Escape character is '%s'.\r\n", control(escape));
1.1 deraadt 2141: }
2142: # if defined(unix)
2143: if ((argc >= 2) && !strcmp(argv[1], "everything")) {
1.10 art 2144: printf("SIGIO received %d time%s.\r\n",
1.1 deraadt 2145: sigiocount, (sigiocount == 1)? "":"s");
2146: if (In3270) {
1.10 art 2147: printf("Process ID %d, process group %d.\r\n",
1.11 deraadt 2148: getpid(), getpgrp());
1.10 art 2149: printf("Terminal input:\r\n");
1.1 deraadt 2150: filestuff(tin);
1.10 art 2151: printf("Terminal output:\r\n");
1.1 deraadt 2152: filestuff(tout);
1.10 art 2153: printf("Network socket:\r\n");
1.1 deraadt 2154: filestuff(net);
2155: }
2156: }
2157: if (In3270 && transcom) {
1.10 art 2158: printf("Transparent mode command is '%s'.\r\n", transcom);
1.1 deraadt 2159: }
2160: # endif /* defined(unix) */
2161: (void) fflush(stdout);
2162: if (In3270) {
2163: return 0;
2164: }
2165: # endif /* defined(TN3270) */
1.10 art 2166: fflush(stdout);
1.1 deraadt 2167: return 1;
2168: }
2169:
2170: #ifdef SIGINFO
2171: /*
2172: * Function that gets called when SIGINFO is received.
2173: */
1.10 art 2174: void
1.1 deraadt 2175: ayt_status()
2176: {
2177: (void) call(status, "status", "notmuch", 0);
2178: }
2179: #endif
2180:
1.10 art 2181: static Command *getcmd(char *name);
2182:
2183: static void
2184: cmdrc(char *m1, char *m2)
2185: {
2186: static char rcname[128];
2187: Command *c;
2188: FILE *rcfile;
2189: int gotmachine = 0;
2190: int l1 = strlen(m1);
2191: int l2 = strlen(m2);
2192: char m1save[64];
2193:
2194: if (skiprc)
2195: return;
2196:
2197: strcpy(m1save, m1);
2198: m1 = m1save;
2199:
2200: if (rcname[0] == 0) {
2201: char *home = getenv("HOME");
2202:
2203: snprintf (rcname, sizeof(rcname), "%s/.telnetrc",
2204: home ? home : "");
2205: }
2206:
2207: if ((rcfile = fopen(rcname, "r")) == 0) {
2208: return;
2209: }
2210:
2211: for (;;) {
2212: if (fgets(line, sizeof(line), rcfile) == NULL)
2213: break;
2214: if (line[0] == 0)
2215: break;
2216: if (line[0] == '#')
2217: continue;
2218: if (gotmachine) {
2219: if (!isspace(line[0]))
2220: gotmachine = 0;
2221: }
2222: if (gotmachine == 0) {
2223: if (isspace(line[0]))
2224: continue;
2225: if (strncasecmp(line, m1, l1) == 0)
2226: strncpy(line, &line[l1], sizeof(line) - l1);
2227: else if (strncasecmp(line, m2, l2) == 0)
2228: strncpy(line, &line[l2], sizeof(line) - l2);
2229: else if (strncasecmp(line, "DEFAULT", 7) == 0)
2230: strncpy(line, &line[7], sizeof(line) - 7);
2231: else
2232: continue;
2233: if (line[0] != ' ' && line[0] != '\t' && line[0] != '\n')
2234: continue;
2235: gotmachine = 1;
2236: }
2237: makeargv();
2238: if (margv[0] == 0)
2239: continue;
2240: c = getcmd(margv[0]);
2241: if (Ambiguous(c)) {
2242: printf("?Ambiguous command: %s\r\n", margv[0]);
2243: continue;
2244: }
2245: if (c == 0) {
2246: printf("?Invalid command: %s\r\n", margv[0]);
2247: continue;
2248: }
2249: /*
2250: * This should never happen...
2251: */
2252: if (c->needconnect && !connected) {
2253: printf("?Need to be connected first for %s.\r\n", margv[0]);
2254: continue;
2255: }
2256: (*c->handler)(margc, margv);
2257: }
2258: fclose(rcfile);
2259: }
2260:
1.1 deraadt 2261:
2262: int
2263: tn(argc, argv)
2264: int argc;
2265: char *argv[];
2266: {
1.5 niklas 2267: register struct hostent *host = 0, *alias = 0;
1.10 art 2268: #if defined(AF_INET6)
2269: struct sockaddr_in6 sin6;
2270: #endif
1.1 deraadt 2271: struct sockaddr_in sin;
1.5 niklas 2272: struct sockaddr_in ladr;
1.10 art 2273: struct sockaddr *sa;
2274: int sa_size;
1.1 deraadt 2275: struct servent *sp = 0;
2276: unsigned long temp;
2277: extern char *inet_ntoa();
2278: #if defined(IP_OPTIONS) && defined(IPPROTO_IP)
1.10 art 2279: char *srp = 0;
2280: int srlen;
1.1 deraadt 2281: #endif
1.5 niklas 2282: char *cmd, *hostp = 0, *portp = 0, *user = 0, *aliasp = 0;
1.10 art 2283: int family, port;
1.1 deraadt 2284:
2285: /* clear the socket address prior to use */
1.3 niklas 2286: memset((char *)&sin, 0, sizeof(sin));
1.1 deraadt 2287:
2288: if (connected) {
1.10 art 2289: printf("?Already connected to %s\r\n", hostname);
1.9 tholo 2290: seteuid(getuid());
1.1 deraadt 2291: setuid(getuid());
2292: return 0;
2293: }
2294: if (argc < 2) {
2295: (void) strcpy(line, "open ");
2296: printf("(to) ");
2297: (void) fgets(&line[strlen(line)], sizeof(line) - strlen(line), stdin);
2298: makeargv();
2299: argc = margc;
2300: argv = margv;
2301: }
2302: cmd = *argv;
2303: --argc; ++argv;
2304: while (argc) {
1.3 niklas 2305: if (strcmp(*argv, "help") == 0 || isprefix(*argv, "?"))
1.1 deraadt 2306: goto usage;
2307: if (strcmp(*argv, "-l") == 0) {
2308: --argc; ++argv;
2309: if (argc == 0)
2310: goto usage;
1.14 ! art 2311: if ((user = strdup(*argv++)) == NULL)
! 2312: err(1, "strdup");
1.1 deraadt 2313: --argc;
2314: continue;
2315: }
1.5 niklas 2316: if (strcmp(*argv, "-b") == 0) {
2317: --argc; ++argv;
2318: if (argc == 0)
2319: goto usage;
2320: aliasp = *argv++;
2321: --argc;
2322: continue;
2323: }
1.1 deraadt 2324: if (strcmp(*argv, "-a") == 0) {
2325: --argc; ++argv;
2326: autologin = 1;
2327: continue;
2328: }
2329: if (hostp == 0) {
2330: hostp = *argv++;
2331: --argc;
2332: continue;
2333: }
2334: if (portp == 0) {
2335: portp = *argv++;
2336: --argc;
2337: continue;
2338: }
2339: usage:
1.10 art 2340: printf("usage: %s [-l user] [-a] host-name [port]\r\n", cmd);
1.9 tholo 2341: seteuid(getuid());
1.1 deraadt 2342: setuid(getuid());
2343: return 0;
2344: }
2345: if (hostp == 0)
2346: goto usage;
2347:
2348: #if defined(IP_OPTIONS) && defined(IPPROTO_IP)
2349: if (hostp[0] == '@' || hostp[0] == '!') {
2350: if ((hostname = strrchr(hostp, ':')) == NULL)
2351: hostname = strrchr(hostp, '@');
2352: hostname++;
2353: srp = 0;
2354: temp = sourceroute(hostp, &srp, &srlen);
2355: if (temp == 0) {
2356: herror(srp);
1.9 tholo 2357: seteuid(getuid());
1.1 deraadt 2358: setuid(getuid());
2359: return 0;
2360: } else if (temp == -1) {
1.10 art 2361: printf("Bad source route option: %s\r\n", hostp);
1.9 tholo 2362: seteuid(getuid());
1.1 deraadt 2363: setuid(getuid());
2364: return 0;
2365: } else {
1.10 art 2366: abort();
1.1 deraadt 2367: }
2368: } else {
2369: #endif
1.10 art 2370: memset (&sin, 0, sizeof(sin));
2371: #if defined(HAVE_INET_PTON) && defined(AF_INET6)
2372: memset (&sin6, 0, sizeof(sin6));
2373:
2374: if(inet_pton(AF_INET6, hostp, &sin6.sin6_addr)) {
2375: sin6.sin6_family = family = AF_INET6;
1.12 art 2376: sa = (struct sockaddr *)&sin6;
2377: sa_size = sizeof(sin6);
1.10 art 2378: strcpy(_hostname, hostp);
2379: hostname =_hostname;
2380: } else
2381: #endif
2382: if(inet_aton(hostp, &sin.sin_addr)){
2383: sin.sin_family = family = AF_INET;
1.12 art 2384: sa = (struct sockaddr *)&sin;
2385: sa_size = sizeof(sin);
1.10 art 2386: strcpy(_hostname, hostp);
1.1 deraadt 2387: hostname = _hostname;
2388: } else {
1.10 art 2389: #ifdef HAVE_GETHOSTBYNAME2
2390: host = gethostbyname2(hostp, AF_INET6);
2391: if(host == NULL)
2392: host = gethostbyname2(hostp, AF_INET);
2393: #else
2394: host = gethostbyname(hostp);
2395: #endif
2396: if (host) {
2397: strncpy(_hostname, host->h_name, sizeof(_hostname));
2398: family = host->h_addrtype;
2399:
2400: switch(family) {
2401: case AF_INET:
2402: memset(&sin, 0, sizeof(sin));
2403: sa_size = sizeof(sin);
2404: sa = (struct sockaddr *)&sin;
2405: sin.sin_family = family;
2406: sin.sin_addr = *((struct in_addr *)(*host->h_addr_list));
2407: break;
2408: #if defined(AF_INET6) && defined(HAVE_STRUCT_SOCKADDR_IN6)
2409: case AF_INET6:
2410: memset(&sin6, 0, sizeof(sin6));
2411: sa_size = sizeof(sin6);
2412: sa = (struct sockaddr *)&sin6;
2413: sin6.sin6_family = family;
2414: sin6.sin6_addr = *((struct in6_addr *)(*host->h_addr_list));
2415: break;
2416: #endif
2417: default:
2418: fprintf(stderr, "Bad address family: %d\n", family);
2419: return 0;
2420: }
2421:
2422: _hostname[sizeof(_hostname)-1] = '\0';
2423: hostname = _hostname;
2424: } else {
2425: herror(hostp);
2426: seteuid(getuid());
2427: setuid(getuid());
2428: fprintf (stderr, "%s: %s\r\n", hostp ? hostp : "",
2429: "unknown error");
2430: return 0;
2431: }
1.1 deraadt 2432: }
2433: #if defined(IP_OPTIONS) && defined(IPPROTO_IP)
2434: }
2435: #endif
2436: if (portp) {
2437: if (*portp == '-') {
2438: portp++;
2439: telnetport = 1;
2440: } else
2441: telnetport = 0;
1.10 art 2442: port = atoi(portp);
2443: if (port == 0) {
1.1 deraadt 2444: sp = getservbyname(portp, "tcp");
2445: if (sp)
1.10 art 2446: port = sp->s_port;
1.1 deraadt 2447: else {
1.10 art 2448: printf("%s: bad port number\r\n", portp);
1.9 tholo 2449: seteuid(getuid());
1.3 niklas 2450: setuid(getuid());
1.1 deraadt 2451: return 0;
2452: }
2453: } else {
1.10 art 2454: port = htons(port);
1.1 deraadt 2455: }
2456: } else {
2457: if (sp == 0) {
2458: sp = getservbyname("telnet", "tcp");
2459: if (sp == 0) {
1.10 art 2460: fprintf(stderr, "telnet: tcp/telnet: unknown service\r\n");
1.9 tholo 2461: seteuid(getuid());
1.3 niklas 2462: setuid(getuid());
1.1 deraadt 2463: return 0;
2464: }
1.10 art 2465: port = sp->s_port;
1.1 deraadt 2466: }
2467: telnetport = 1;
2468: }
1.10 art 2469: switch(family) {
2470: case AF_INET:
2471: sin.sin_port = port;
2472: printf("Trying %s...\r\n", inet_ntoa(sin.sin_addr));
2473: break;
2474: #if defined(AF_INET6) && defined(HAVE_STRUCT_SOCKADDR_IN6)
2475: case AF_INET6: {
2476: #ifndef INET6_ADDRSTRLEN
2477: #define INET6_ADDRSTRLEN 46
2478: #endif
2479:
2480: char buf[INET6_ADDRSTRLEN];
2481:
2482: sin6.sin6_port = port;
2483: #ifdef HAVE_INET_NTOP
2484: printf("Trying %s...\r\n", inet_ntop(AF_INET6,
2485: &sin6.sin6_addr,
2486: buf,
2487: sizeof(buf)));
2488: #endif
2489: break;
2490: }
2491: #endif
2492: default:
2493: abort();
2494: }
2495:
1.1 deraadt 2496: do {
1.10 art 2497: net = socket(family, SOCK_STREAM, 0);
1.9 tholo 2498: seteuid(getuid());
1.1 deraadt 2499: setuid(getuid());
2500: if (net < 0) {
2501: perror("telnet: socket");
2502: return 0;
2503: }
1.5 niklas 2504: if (aliasp) {
2505: memset ((caddr_t)&ladr, 0, sizeof (ladr));
2506: temp = inet_addr(aliasp);
2507: if (temp != INADDR_NONE) {
2508: ladr.sin_addr.s_addr = temp;
2509: ladr.sin_family = AF_INET;
2510: alias = gethostbyaddr((char *)&temp, sizeof(temp), AF_INET);
2511: } else {
2512: alias = gethostbyname(aliasp);
2513: if (alias) {
2514: ladr.sin_family = alias->h_addrtype;
2515: #if defined(h_addr) /* In 4.3, this is a #define */
2516: memmove((caddr_t)&ladr.sin_addr,
2517: alias->h_addr_list[0], alias->h_length);
2518: #else /* defined(h_addr) */
2519: memmove((caddr_t)&ladr.sin_addr, alias->h_addr,
2520: alias->h_length);
2521: #endif /* defined(h_addr) */
2522: } else {
2523: herror(aliasp);
2524: return 0;
2525: }
2526: }
2527: ladr.sin_port = htons(0);
2528:
2529: if (bind (net, (struct sockaddr *)&ladr, sizeof(ladr)) < 0) {
2530: perror(aliasp);;
2531: (void) close(net); /* dump descriptor */
2532: return 0;
2533: }
2534: }
2535: #if defined(IP_OPTIONS) && defined(IPPROTO_IP)
1.1 deraadt 2536: if (srp && setsockopt(net, IPPROTO_IP, IP_OPTIONS, (char *)srp, srlen) < 0)
2537: perror("setsockopt (IP_OPTIONS)");
2538: #endif
2539: #if defined(IPPROTO_IP) && defined(IP_TOS)
2540: {
2541: # if defined(HAS_GETTOS)
2542: struct tosent *tp;
2543: if (tos < 0 && (tp = gettosbyname("telnet", "tcp")))
2544: tos = tp->t_tos;
2545: # endif
2546: if (tos < 0)
1.3 niklas 2547: tos = IPTOS_LOWDELAY; /* Low Delay bit */
1.1 deraadt 2548: if (tos
2549: && (setsockopt(net, IPPROTO_IP, IP_TOS,
1.10 art 2550: (void *)&tos, sizeof(int)) < 0)
1.1 deraadt 2551: && (errno != ENOPROTOOPT))
2552: perror("telnet: setsockopt (IP_TOS) (ignored)");
2553: }
2554: #endif /* defined(IPPROTO_IP) && defined(IP_TOS) */
2555:
2556: if (debug && SetSockOpt(net, SOL_SOCKET, SO_DEBUG, 1) < 0) {
2557: perror("setsockopt (SO_DEBUG)");
2558: }
2559:
1.10 art 2560: if (connect(net, sa, sa_size) < 0) {
1.1 deraadt 2561: if (host && host->h_addr_list[1]) {
2562: int oerrno = errno;
2563:
1.10 art 2564: switch(family) {
2565: case AF_INET :
2566: fprintf(stderr, "telnet: connect to address %s: ",
2567: inet_ntoa(sin.sin_addr));
2568: sin.sin_addr = *((struct in_addr *)(*++host->h_addr_list));
2569: break;
2570: #if defined(AF_INET6) && defined(HAVE_STRUCT_SOCKADDR_IN6)
2571: case AF_INET6: {
2572: char buf[INET6_ADDRSTRLEN];
2573:
2574: fprintf(stderr, "telnet: connect to address %s: ",
2575: inet_ntop(AF_INET6, &sin6.sin6_addr, buf,
2576: sizeof(buf)));
2577: sin6.sin6_addr = *((struct in6_addr *)(*++host->h_addr_list));
2578: break;
2579: }
2580: #endif
2581: default:
2582: abort();
2583: }
2584:
1.1 deraadt 2585: errno = oerrno;
1.10 art 2586: perror(NULL);
1.1 deraadt 2587: host->h_addr_list++;
1.3 niklas 2588: memmove((caddr_t)&sin.sin_addr,
1.1 deraadt 2589: host->h_addr_list[0], host->h_length);
2590: (void) NetClose(net);
2591: continue;
2592: }
2593: perror("telnet: Unable to connect to remote host");
2594: return 0;
2595: }
2596: connected++;
1.10 art 2597: #if defined(AUTHENTICATION) || defined(ENCRYPTION)
1.1 deraadt 2598: auth_encrypt_connect(connected);
2599: #endif /* defined(AUTHENTICATION) */
2600: } while (connected == 0);
2601: cmdrc(hostp, hostname);
2602: if (autologin && user == NULL) {
2603: struct passwd *pw;
2604:
2605: user = getenv("USER");
2606: if (user == NULL ||
2607: (pw = getpwnam(user)) && pw->pw_uid != getuid()) {
2608: if (pw = getpwuid(getuid()))
2609: user = pw->pw_name;
2610: else
2611: user = NULL;
2612: }
2613: }
2614: if (user) {
2615: env_define((unsigned char *)"USER", (unsigned char *)user);
2616: env_export((unsigned char *)"USER");
2617: }
2618: (void) call(status, "status", "notmuch", 0);
2619: if (setjmp(peerdied) == 0)
2620: telnet(user);
2621: (void) NetClose(net);
1.10 art 2622: ExitString("Connection closed by foreign host.\r\n",1);
1.1 deraadt 2623: /*NOTREACHED*/
1.10 art 2624: return 0;
1.1 deraadt 2625: }
2626:
2627: #define HELPINDENT (sizeof ("connect"))
2628:
2629: static char
2630: openhelp[] = "connect to a site",
2631: closehelp[] = "close current connection",
2632: logouthelp[] = "forcibly logout remote user and close the connection",
2633: quithelp[] = "exit telnet",
2634: statushelp[] = "print status information",
2635: helphelp[] = "print help information",
2636: sendhelp[] = "transmit special characters ('send ?' for more)",
2637: sethelp[] = "set operating parameters ('set ?' for more)",
2638: unsethelp[] = "unset operating parameters ('unset ?' for more)",
2639: togglestring[] ="toggle operating parameters ('toggle ?' for more)",
2640: slchelp[] = "change state of special charaters ('slc ?' for more)",
2641: displayhelp[] = "display operating parameters",
2642: #if defined(TN3270) && defined(unix)
2643: transcomhelp[] = "specify Unix command for transparent mode pipe",
2644: #endif /* defined(TN3270) && defined(unix) */
2645: #if defined(AUTHENTICATION)
2646: authhelp[] = "turn on (off) authentication ('auth ?' for more)",
2647: #endif
1.10 art 2648: #if defined(ENCRYPTION)
2649: encrypthelp[] = "turn on (off) encryption ('encrypt ?' for more)",
2650: #endif
1.1 deraadt 2651: zhelp[] = "suspend telnet",
2652: shellhelp[] = "invoke a subshell",
2653: envhelp[] = "change environment variables ('environ ?' for more)",
2654: modestring[] = "try to enter line or character mode ('mode ?' for more)";
2655:
1.10 art 2656: static int help __P((int, char**));
1.1 deraadt 2657:
2658: static Command cmdtab[] = {
2659: { "close", closehelp, bye, 1 },
2660: { "logout", logouthelp, logout, 1 },
2661: { "display", displayhelp, display, 0 },
2662: { "mode", modestring, modecmd, 0 },
2663: { "open", openhelp, tn, 0 },
2664: { "quit", quithelp, quit, 0 },
2665: { "send", sendhelp, sendcmd, 0 },
2666: { "set", sethelp, setcmd, 0 },
2667: { "unset", unsethelp, unsetcmd, 0 },
2668: { "status", statushelp, status, 0 },
2669: { "toggle", togglestring, toggle, 0 },
2670: { "slc", slchelp, slccmd, 0 },
2671: #if defined(TN3270) && defined(unix)
2672: { "transcom", transcomhelp, settranscom, 0 },
2673: #endif /* defined(TN3270) && defined(unix) */
2674: #if defined(AUTHENTICATION)
2675: { "auth", authhelp, auth_cmd, 0 },
2676: #endif
1.10 art 2677: #if defined(ENCRYPTION)
2678: { "encrypt", encrypthelp, encrypt_cmd, 0 },
2679: #endif
2680:
2681: { "z", zhelp, telnetsuspend, 0 },
1.1 deraadt 2682: #if defined(TN3270)
2683: { "!", shellhelp, shell, 1 },
2684: #else
2685: { "!", shellhelp, shell, 0 },
2686: #endif
2687: { "environ", envhelp, env_cmd, 0 },
2688: { "?", helphelp, help, 0 },
1.6 deraadt 2689: #if defined(SKEY)
2690: { "skey", NULL, skey_calc, 0 },
2691: #endif
1.10 art 2692: { 0, 0, 0, 0 }
1.1 deraadt 2693: };
2694:
2695: static char crmodhelp[] = "deprecated command -- use 'toggle crmod' instead";
2696: static char escapehelp[] = "deprecated command -- use 'set escape' instead";
2697:
2698: static Command cmdtab2[] = {
2699: { "help", 0, help, 0 },
2700: { "escape", escapehelp, setescape, 0 },
2701: { "crmod", crmodhelp, togcrmod, 0 },
1.10 art 2702: { 0, 0, 0, 0 }
1.1 deraadt 2703: };
2704:
2705:
2706: /*
2707: * Call routine with argc, argv set from args (terminated by 0).
2708: */
2709:
2710: /*VARARGS1*/
1.10 art 2711: static int
2712: call(intrtn_t routine, ...)
1.1 deraadt 2713: {
2714: va_list ap;
2715: char *args[100];
2716: int argno = 0;
2717:
1.10 art 2718: va_start(ap, routine);
2719: while ((args[argno++] = va_arg(ap, char *)) != 0);
1.1 deraadt 2720: va_end(ap);
2721: return (*routine)(argno-1, args);
2722: }
2723:
2724:
2725: static Command *
2726: getcmd(name)
2727: char *name;
2728: {
2729: Command *cm;
2730:
1.10 art 2731: if ((cm = (Command *) genget(name, (char **) cmdtab, sizeof(Command))))
1.1 deraadt 2732: return cm;
2733: return (Command *) genget(name, (char **) cmdtab2, sizeof(Command));
2734: }
2735:
2736: void
2737: command(top, tbuf, cnt)
2738: int top;
2739: char *tbuf;
2740: int cnt;
2741: {
2742: register Command *c;
2743:
2744: setcommandmode();
2745: if (!top) {
2746: putchar('\n');
2747: #if defined(unix)
2748: } else {
2749: (void) signal(SIGINT, SIG_DFL);
2750: (void) signal(SIGQUIT, SIG_DFL);
2751: #endif /* defined(unix) */
2752: }
2753: for (;;) {
2754: if (rlogin == _POSIX_VDISABLE)
2755: printf("%s> ", prompt);
2756: if (tbuf) {
2757: register char *cp;
2758: cp = line;
2759: while (cnt > 0 && (*cp++ = *tbuf++) != '\n')
2760: cnt--;
2761: tbuf = 0;
2762: if (cp == line || *--cp != '\n' || cp == line)
2763: goto getline;
2764: *cp = '\0';
2765: if (rlogin == _POSIX_VDISABLE)
1.10 art 2766: printf("%s\r\n", line);
1.1 deraadt 2767: } else {
2768: getline:
2769: if (rlogin != _POSIX_VDISABLE)
2770: printf("%s> ", prompt);
2771: if (fgets(line, sizeof(line), stdin) == NULL) {
2772: if (feof(stdin) || ferror(stdin)) {
2773: (void) quit();
2774: /*NOTREACHED*/
2775: }
2776: break;
2777: }
2778: }
2779: if (line[0] == 0)
2780: break;
2781: makeargv();
2782: if (margv[0] == 0) {
2783: break;
2784: }
2785: c = getcmd(margv[0]);
2786: if (Ambiguous(c)) {
1.10 art 2787: printf("?Ambiguous command\r\n");
1.1 deraadt 2788: continue;
2789: }
2790: if (c == 0) {
1.10 art 2791: printf("?Invalid command\r\n");
1.1 deraadt 2792: continue;
2793: }
2794: if (c->needconnect && !connected) {
1.10 art 2795: printf("?Need to be connected first.\r\n");
1.1 deraadt 2796: continue;
2797: }
2798: if ((*c->handler)(margc, margv)) {
2799: break;
2800: }
2801: }
2802: if (!top) {
2803: if (!connected) {
2804: longjmp(toplevel, 1);
2805: /*NOTREACHED*/
2806: }
2807: #if defined(TN3270)
2808: if (shell_active == 0) {
2809: setconnmode(0);
2810: }
2811: #else /* defined(TN3270) */
2812: setconnmode(0);
2813: #endif /* defined(TN3270) */
2814: }
2815: }
2816:
2817: /*
2818: * Help command.
2819: */
2820: static
2821: help(argc, argv)
2822: int argc;
2823: char *argv[];
2824: {
2825: register Command *c;
2826:
2827: if (argc == 1) {
1.10 art 2828: printf("Commands may be abbreviated. Commands are:\r\n\r\n");
1.1 deraadt 2829: for (c = cmdtab; c->name; c++)
2830: if (c->help) {
1.10 art 2831: printf("%-*s\t%s\r\n", HELPINDENT, c->name,
1.1 deraadt 2832: c->help);
2833: }
2834: return 0;
2835: }
2836: while (--argc > 0) {
2837: register char *arg;
2838: arg = *++argv;
2839: c = getcmd(arg);
2840: if (Ambiguous(c))
1.10 art 2841: printf("?Ambiguous help command %s\r\n", arg);
1.1 deraadt 2842: else if (c == (Command *)0)
1.10 art 2843: printf("?Invalid help command %s\r\n", arg);
1.1 deraadt 2844: else
1.10 art 2845: printf("%s\r\n", c->help);
1.1 deraadt 2846: }
2847: return 0;
2848: }
2849:
2850: static char *rcname = 0;
2851: static char rcbuf[128];
2852:
2853: #if defined(IP_OPTIONS) && defined(IPPROTO_IP)
2854:
2855: /*
2856: * Source route is handed in as
2857: * [!]@hop1@hop2...[@|:]dst
2858: * If the leading ! is present, it is a
2859: * strict source route, otherwise it is
2860: * assmed to be a loose source route.
2861: *
2862: * We fill in the source route option as
2863: * hop1,hop2,hop3...dest
2864: * and return a pointer to hop1, which will
2865: * be the address to connect() to.
2866: *
2867: * Arguments:
2868: * arg: pointer to route list to decipher
2869: *
2870: * cpp: If *cpp is not equal to NULL, this is a
2871: * pointer to a pointer to a character array
2872: * that should be filled in with the option.
2873: *
2874: * lenp: pointer to an integer that contains the
2875: * length of *cpp if *cpp != NULL.
2876: *
2877: * Return values:
2878: *
2879: * Returns the address of the host to connect to. If the
2880: * return value is -1, there was a syntax error in the
2881: * option, either unknown characters, or too many hosts.
2882: * If the return value is 0, one of the hostnames in the
2883: * path is unknown, and *cpp is set to point to the bad
2884: * hostname.
2885: *
2886: * *cpp: If *cpp was equal to NULL, it will be filled
2887: * in with a pointer to our static area that has
2888: * the option filled in. This will be 32bit aligned.
1.3 niklas 2889: *
1.1 deraadt 2890: * *lenp: This will be filled in with how long the option
2891: * pointed to by *cpp is.
1.3 niklas 2892: *
1.1 deraadt 2893: */
2894: unsigned long
2895: sourceroute(arg, cpp, lenp)
2896: char *arg;
2897: char **cpp;
2898: int *lenp;
2899: {
2900: static char lsr[44];
2901: #ifdef sysV88
2902: static IOPTN ipopt;
2903: #endif
2904: char *cp, *cp2, *lsrp, *lsrep;
2905: register int tmp;
2906: struct in_addr sin_addr;
2907: register struct hostent *host = 0;
2908: register char c;
2909:
2910: /*
2911: * Verify the arguments, and make sure we have
2912: * at least 7 bytes for the option.
2913: */
2914: if (cpp == NULL || lenp == NULL)
2915: return((unsigned long)-1);
2916: if (*cpp != NULL && *lenp < 7)
2917: return((unsigned long)-1);
2918: /*
2919: * Decide whether we have a buffer passed to us,
2920: * or if we need to use our own static buffer.
2921: */
2922: if (*cpp) {
2923: lsrp = *cpp;
2924: lsrep = lsrp + *lenp;
2925: } else {
2926: *cpp = lsrp = lsr;
2927: lsrep = lsrp + 44;
2928: }
2929:
2930: cp = arg;
2931:
2932: /*
2933: * Next, decide whether we have a loose source
2934: * route or a strict source route, and fill in
2935: * the begining of the option.
2936: */
2937: #ifndef sysV88
2938: if (*cp == '!') {
2939: cp++;
2940: *lsrp++ = IPOPT_SSRR;
2941: } else
2942: *lsrp++ = IPOPT_LSRR;
2943: #else
2944: if (*cp == '!') {
2945: cp++;
2946: ipopt.io_type = IPOPT_SSRR;
2947: } else
2948: ipopt.io_type = IPOPT_LSRR;
2949: #endif
2950:
2951: if (*cp != '@')
2952: return((unsigned long)-1);
2953:
2954: #ifndef sysV88
2955: lsrp++; /* skip over length, we'll fill it in later */
2956: *lsrp++ = 4;
2957: #endif
2958:
2959: cp++;
2960:
2961: sin_addr.s_addr = 0;
2962:
2963: for (c = 0;;) {
2964: if (c == ':')
2965: cp2 = 0;
1.10 art 2966: else for (cp2 = cp; (c = *cp2); cp2++) {
1.1 deraadt 2967: if (c == ',') {
2968: *cp2++ = '\0';
2969: if (*cp2 == '@')
2970: cp2++;
2971: } else if (c == '@') {
2972: *cp2++ = '\0';
2973: } else if (c == ':') {
2974: *cp2++ = '\0';
2975: } else
2976: continue;
2977: break;
2978: }
2979: if (!c)
2980: cp2 = 0;
2981:
1.10 art 2982: if ((tmp = inet_addr(cp)) != -1) {
1.1 deraadt 2983: sin_addr.s_addr = tmp;
1.10 art 2984: } else if ((host = gethostbyname(cp))) {
1.1 deraadt 2985: #if defined(h_addr)
1.3 niklas 2986: memmove((caddr_t)&sin_addr,
1.10 art 2987: host->h_addr_list[0],
2988: sizeof(sin_addr));
1.1 deraadt 2989: #else
1.10 art 2990: memmove((caddr_t)&sin_addr, host->h_addr,
2991: sizeof(sin_addr));
1.1 deraadt 2992: #endif
2993: } else {
2994: *cpp = cp;
2995: return(0);
2996: }
1.3 niklas 2997: memmove(lsrp, (char *)&sin_addr, 4);
1.1 deraadt 2998: lsrp += 4;
2999: if (cp2)
3000: cp = cp2;
3001: else
3002: break;
3003: /*
3004: * Check to make sure there is space for next address
3005: */
3006: if (lsrp + 4 > lsrep)
3007: return((unsigned long)-1);
3008: }
3009: #ifndef sysV88
3010: if ((*(*cpp+IPOPT_OLEN) = lsrp - *cpp) <= 7) {
3011: *cpp = 0;
3012: *lenp = 0;
3013: return((unsigned long)-1);
3014: }
3015: *lsrp++ = IPOPT_NOP; /* 32 bit word align it */
3016: *lenp = lsrp - *cpp;
3017: #else
3018: ipopt.io_len = lsrp - *cpp;
3019: if (ipopt.io_len <= 5) { /* Is 3 better ? */
3020: *cpp = 0;
3021: *lenp = 0;
3022: return((unsigned long)-1);
3023: }
3024: *lenp = sizeof(ipopt);
3025: *cpp = (char *) &ipopt;
3026: #endif
3027: return(sin_addr.s_addr);
3028: }
3029: #endif
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