Annotation of src/usr.bin/telnet/commands.c, Revision 1.46.4.1
1.46.4.1! brad 1: /* $OpenBSD: commands.c,v 1.46 2003/12/28 21:53:01 otto 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.
1.45 millert 16: * 3. Neither the name of the University nor the names of its contributors
1.1 deraadt 17: * may be used to endorse or promote products derived from this software
18: * without specific prior written permission.
19: *
20: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30: * SUCH DAMAGE.
31: */
32:
1.10 art 33: #include "telnet_locl.h"
1.15 art 34: #include <err.h>
1.1 deraadt 35:
36: #if defined(IPPROTO_IP) && defined(IP_TOS)
37: int tos = -1;
38: #endif /* defined(IPPROTO_IP) && defined(IP_TOS) */
39:
40: char *hostname;
41: static char _hostname[MAXHOSTNAMELEN];
42:
1.10 art 43: typedef int (*intrtn_t)(int, char**);
1.40 millert 44: static int call(intrtn_t, ...);
1.1 deraadt 45:
46: typedef struct {
47: char *name; /* command name */
48: char *help; /* help string (NULL for no help) */
49: int (*handler)(); /* routine which executes command */
50: int needconnect; /* Do we need to be connected to execute? */
51: } Command;
52:
53: static char line[256];
54: static char saveline[256];
55: static int margc;
56: static char *margv[20];
57:
1.6 deraadt 58: #if defined(SKEY)
59: #include <sys/wait.h>
60: #define PATH_SKEY "/usr/bin/skey"
61: int
62: skey_calc(argc, argv)
63: int argc;
64: char **argv;
65: {
66: int status;
67:
68: if(argc != 3) {
1.21 deraadt 69: printf("usage: %s sequence challenge\n", argv[0]);
1.15 art 70: return 0;
1.6 deraadt 71: }
72:
73: switch(fork()) {
74: case 0:
75: execv(PATH_SKEY, argv);
76: exit (1);
77: case -1:
1.15 art 78: err(1, "fork");
1.6 deraadt 79: break;
80: default:
81: (void) wait(&status);
82: if (WIFEXITED(status))
83: return (WEXITSTATUS(status));
84: return (0);
85: }
86: }
87: #endif
88:
89:
90:
1.1 deraadt 91: static void
92: makeargv()
93: {
1.39 mpech 94: char *cp, *cp2, c;
95: char **argp = margv;
1.1 deraadt 96:
97: margc = 0;
98: cp = line;
99: if (*cp == '!') { /* Special case shell escape */
1.43 hin 100: strlcpy(saveline, line, sizeof(saveline)); /* save for shell command */
1.1 deraadt 101: *argp++ = "!"; /* No room in string to get this */
102: margc++;
103: cp++;
104: }
1.10 art 105: while ((c = *cp)) {
1.39 mpech 106: int inquote = 0;
1.1 deraadt 107: while (isspace(c))
108: c = *++cp;
109: if (c == '\0')
110: break;
111: *argp++ = cp;
112: margc += 1;
113: for (cp2 = cp; c != '\0'; c = *++cp) {
114: if (inquote) {
115: if (c == inquote) {
116: inquote = 0;
117: continue;
118: }
119: } else {
120: if (c == '\\') {
121: if ((c = *++cp) == '\0')
122: break;
123: } else if (c == '"') {
124: inquote = '"';
125: continue;
126: } else if (c == '\'') {
127: inquote = '\'';
128: continue;
129: } else if (isspace(c))
130: break;
131: }
132: *cp2++ = c;
133: }
134: *cp2 = '\0';
135: if (c == '\0')
136: break;
137: cp++;
138: }
139: *argp++ = 0;
140: }
141:
142: /*
143: * Make a character string into a number.
144: *
145: * Todo: 1. Could take random integers (12, 0x12, 012, 0b1).
146: */
147:
1.15 art 148: static char
1.1 deraadt 149: special(s)
1.39 mpech 150: char *s;
1.1 deraadt 151: {
1.39 mpech 152: char c;
1.1 deraadt 153: char b;
154:
155: switch (*s) {
156: case '^':
157: b = *++s;
158: if (b == '?') {
159: c = b | 0x40; /* DEL */
160: } else {
161: c = b & 0x1f;
162: }
163: break;
164: default:
165: c = *s;
166: break;
167: }
168: return c;
169: }
170:
171: /*
172: * Construct a control character sequence
173: * for a special character.
174: */
175: static char *
176: control(c)
1.39 mpech 177: cc_t c;
1.1 deraadt 178: {
179: static char buf[5];
180: /*
181: * The only way I could get the Sun 3.5 compiler
182: * to shut up about
183: * if ((unsigned int)c >= 0x80)
184: * was to assign "c" to an unsigned int variable...
185: * Arggg....
186: */
1.39 mpech 187: unsigned int uic = (unsigned int)c;
1.1 deraadt 188:
189: if (uic == 0x7f)
190: return ("^?");
191: if (c == (cc_t)_POSIX_VDISABLE) {
192: return "off";
193: }
194: if (uic >= 0x80) {
195: buf[0] = '\\';
196: buf[1] = ((c>>6)&07) + '0';
197: buf[2] = ((c>>3)&07) + '0';
198: buf[3] = (c&07) + '0';
199: buf[4] = 0;
200: } else if (uic >= 0x20) {
201: buf[0] = c;
202: buf[1] = 0;
203: } else {
204: buf[0] = '^';
205: buf[1] = '@'+c;
206: buf[2] = 0;
207: }
208: return (buf);
209: }
210:
211:
212:
213: /*
214: * The following are data structures and routines for
215: * the "send" command.
216: *
217: */
1.3 niklas 218:
1.1 deraadt 219: struct sendlist {
220: char *name; /* How user refers to it (case independent) */
221: char *help; /* Help information (0 ==> no help) */
222: int needconnect; /* Need to be connected */
223: int narg; /* Number of arguments */
224: int (*handler)(); /* Routine to perform (for special ops) */
225: int nbyte; /* Number of bytes to send this command */
226: int what; /* Character to be sent (<0 ==> special) */
227: };
228:
229:
230: static int
1.41 millert 231: send_esc(void),
232: send_help(void),
233: send_docmd(char *),
234: send_dontcmd(char *),
235: send_willcmd(char *),
236: send_wontcmd(char *);
1.1 deraadt 237:
238: static struct sendlist Sendlist[] = {
239: { "ao", "Send Telnet Abort output", 1, 0, 0, 2, AO },
240: { "ayt", "Send Telnet 'Are You There'", 1, 0, 0, 2, AYT },
241: { "brk", "Send Telnet Break", 1, 0, 0, 2, BREAK },
242: { "break", 0, 1, 0, 0, 2, BREAK },
243: { "ec", "Send Telnet Erase Character", 1, 0, 0, 2, EC },
244: { "el", "Send Telnet Erase Line", 1, 0, 0, 2, EL },
245: { "escape", "Send current escape character", 1, 0, send_esc, 1, 0 },
246: { "ga", "Send Telnet 'Go Ahead' sequence", 1, 0, 0, 2, GA },
247: { "ip", "Send Telnet Interrupt Process", 1, 0, 0, 2, IP },
248: { "intp", 0, 1, 0, 0, 2, IP },
249: { "interrupt", 0, 1, 0, 0, 2, IP },
250: { "intr", 0, 1, 0, 0, 2, IP },
251: { "nop", "Send Telnet 'No operation'", 1, 0, 0, 2, NOP },
252: { "eor", "Send Telnet 'End of Record'", 1, 0, 0, 2, EOR },
253: { "abort", "Send Telnet 'Abort Process'", 1, 0, 0, 2, ABORT },
254: { "susp", "Send Telnet 'Suspend Process'", 1, 0, 0, 2, SUSP },
255: { "eof", "Send Telnet End of File Character", 1, 0, 0, 2, xEOF },
256: { "synch", "Perform Telnet 'Synch operation'", 1, 0, dosynch, 2, 0 },
257: { "getstatus", "Send request for STATUS", 1, 0, get_status, 6, 0 },
258: { "?", "Display send options", 0, 0, send_help, 0, 0 },
259: { "help", 0, 0, 0, send_help, 0, 0 },
260: { "do", 0, 0, 1, send_docmd, 3, 0 },
261: { "dont", 0, 0, 1, send_dontcmd, 3, 0 },
262: { "will", 0, 0, 1, send_willcmd, 3, 0 },
263: { "wont", 0, 0, 1, send_wontcmd, 3, 0 },
264: { 0 }
265: };
266:
267: #define GETSEND(name) ((struct sendlist *) genget(name, (char **) Sendlist, \
268: sizeof(struct sendlist)))
269:
270: static int
271: sendcmd(argc, argv)
272: int argc;
273: char **argv;
274: {
275: int count; /* how many bytes we are going to need to send */
276: int i;
277: struct sendlist *s; /* pointer to current command */
278: int success = 0;
279: int needconnect = 0;
280:
281: if (argc < 2) {
1.10 art 282: printf("need at least one argument for 'send' command\r\n");
283: printf("'send ?' for help\r\n");
1.1 deraadt 284: return 0;
285: }
286: /*
287: * First, validate all the send arguments.
288: * In addition, we see how much space we are going to need, and
289: * whether or not we will be doing a "SYNCH" operation (which
290: * flushes the network queue).
291: */
292: count = 0;
293: for (i = 1; i < argc; i++) {
294: s = GETSEND(argv[i]);
295: if (s == 0) {
1.10 art 296: printf("Unknown send argument '%s'\r\n'send ?' for help.\r\n",
1.1 deraadt 297: argv[i]);
298: return 0;
299: } else if (Ambiguous(s)) {
1.10 art 300: printf("Ambiguous send argument '%s'\r\n'send ?' for help.\r\n",
1.1 deraadt 301: argv[i]);
302: return 0;
303: }
304: if (i + s->narg >= argc) {
305: fprintf(stderr,
1.10 art 306: "Need %d argument%s to 'send %s' command. 'send %s ?' for help.\r\n",
1.1 deraadt 307: s->narg, s->narg == 1 ? "" : "s", s->name, s->name);
308: return 0;
309: }
310: count += s->nbyte;
311: if (s->handler == send_help) {
312: send_help();
313: return 0;
314: }
315:
316: i += s->narg;
317: needconnect += s->needconnect;
318: }
319: if (!connected && needconnect) {
1.10 art 320: printf("?Need to be connected first.\r\n");
321: printf("'send ?' for help\r\n");
1.1 deraadt 322: return 0;
323: }
324: /* Now, do we have enough room? */
325: if (NETROOM() < count) {
1.10 art 326: printf("There is not enough room in the buffer TO the network\r\n");
327: printf("to process your request. Nothing will be done.\r\n");
328: printf("('send synch' will throw away most data in the network\r\n");
329: printf("buffer, if this might help.)\r\n");
1.1 deraadt 330: return 0;
331: }
332: /* OK, they are all OK, now go through again and actually send */
333: count = 0;
334: for (i = 1; i < argc; i++) {
335: if ((s = GETSEND(argv[i])) == 0) {
1.10 art 336: fprintf(stderr, "Telnet 'send' error - argument disappeared!\r\n");
1.1 deraadt 337: (void) quit();
338: /*NOTREACHED*/
339: }
340: if (s->handler) {
341: count++;
342: success += (*s->handler)((s->narg > 0) ? argv[i+1] : 0,
343: (s->narg > 1) ? argv[i+2] : 0);
344: i += s->narg;
345: } else {
346: NET2ADD(IAC, s->what);
347: printoption("SENT", IAC, s->what);
348: }
349: }
350: return (count == success);
351: }
352:
1.10 art 353: static int
354: send_tncmd(void (*func)(), char *cmd, char *name);
355:
1.1 deraadt 356: static int
357: send_esc()
358: {
359: NETADD(escape);
360: return 1;
361: }
362:
363: static int
364: send_docmd(name)
365: char *name;
366: {
367: return(send_tncmd(send_do, "do", name));
368: }
369:
370: static int
371: send_dontcmd(name)
372: char *name;
373: {
374: return(send_tncmd(send_dont, "dont", name));
375: }
376: static int
377: send_willcmd(name)
378: char *name;
379: {
380: return(send_tncmd(send_will, "will", name));
381: }
382: static int
383: send_wontcmd(name)
384: char *name;
385: {
386: return(send_tncmd(send_wont, "wont", name));
387: }
388:
389: int
390: send_tncmd(func, cmd, name)
391: void (*func)();
392: char *cmd, *name;
393: {
394: char **cpp;
395: extern char *telopts[];
1.39 mpech 396: int val = 0;
1.1 deraadt 397:
1.10 art 398: if (isprefix(name, "help") || isprefix(name, "?")) {
1.39 mpech 399: int col, len;
1.1 deraadt 400:
1.10 art 401: printf("Usage: send %s <value|option>\r\n", cmd);
402: printf("\"value\" must be from 0 to 255\r\n");
403: printf("Valid options are:\r\n\t");
1.1 deraadt 404:
405: col = 8;
406: for (cpp = telopts; *cpp; cpp++) {
407: len = strlen(*cpp) + 3;
408: if (col + len > 65) {
1.10 art 409: printf("\r\n\t");
1.1 deraadt 410: col = 8;
411: }
412: printf(" \"%s\"", *cpp);
413: col += len;
414: }
1.10 art 415: printf("\r\n");
1.1 deraadt 416: return 0;
417: }
418: cpp = (char **)genget(name, telopts, sizeof(char *));
419: if (Ambiguous(cpp)) {
1.10 art 420: fprintf(stderr,"'%s': ambiguous argument ('send %s ?' for help).\r\n",
1.1 deraadt 421: name, cmd);
422: return 0;
423: }
424: if (cpp) {
425: val = cpp - telopts;
426: } else {
1.39 mpech 427: char *cp = name;
1.1 deraadt 428:
429: while (*cp >= '0' && *cp <= '9') {
430: val *= 10;
431: val += *cp - '0';
432: cp++;
433: }
434: if (*cp != 0) {
1.10 art 435: fprintf(stderr, "'%s': unknown argument ('send %s ?' for help).\r\n",
1.1 deraadt 436: name, cmd);
437: return 0;
438: } else if (val < 0 || val > 255) {
1.10 art 439: fprintf(stderr, "'%s': bad value ('send %s ?' for help).\r\n",
1.1 deraadt 440: name, cmd);
441: return 0;
442: }
443: }
444: if (!connected) {
1.10 art 445: printf("?Need to be connected first.\r\n");
1.1 deraadt 446: return 0;
447: }
448: (*func)(val, 1);
449: return 1;
450: }
451:
452: static int
453: send_help()
454: {
455: struct sendlist *s; /* pointer to current command */
456: for (s = Sendlist; s->name; s++) {
457: if (s->help)
1.10 art 458: printf("%-15s %s\r\n", s->name, s->help);
1.1 deraadt 459: }
460: return(0);
461: }
462:
463: /*
464: * The following are the routines and data structures referred
465: * to by the arguments to the "toggle" command.
466: */
467:
468: static int
469: lclchars()
470: {
471: donelclchars = 1;
472: return 1;
473: }
474:
475: static int
476: togdebug()
477: {
478: #ifndef NOT43
479: if (net > 0 &&
480: (SetSockOpt(net, SOL_SOCKET, SO_DEBUG, debug)) < 0) {
481: perror("setsockopt (SO_DEBUG)");
482: }
483: #else /* NOT43 */
484: if (debug) {
1.10 art 485: if (net > 0 && SetSockOpt(net, SOL_SOCKET, SO_DEBUG, 0, 0) < 0)
1.1 deraadt 486: perror("setsockopt (SO_DEBUG)");
487: } else
1.10 art 488: printf("Cannot turn off socket debugging\r\n");
1.1 deraadt 489: #endif /* NOT43 */
490: return 1;
491: }
492:
493:
494: static int
495: togcrlf()
496: {
497: if (crlf) {
1.10 art 498: printf("Will send carriage returns as telnet <CR><LF>.\r\n");
1.1 deraadt 499: } else {
1.10 art 500: printf("Will send carriage returns as telnet <CR><NUL>.\r\n");
1.1 deraadt 501: }
502: return 1;
503: }
504:
505: int binmode;
506:
507: static int
508: togbinary(val)
509: int val;
510: {
511: donebinarytoggle = 1;
512:
513: if (val >= 0) {
514: binmode = val;
515: } else {
516: if (my_want_state_is_will(TELOPT_BINARY) &&
517: my_want_state_is_do(TELOPT_BINARY)) {
518: binmode = 1;
519: } else if (my_want_state_is_wont(TELOPT_BINARY) &&
520: my_want_state_is_dont(TELOPT_BINARY)) {
521: binmode = 0;
522: }
523: val = binmode ? 0 : 1;
524: }
525:
526: if (val == 1) {
527: if (my_want_state_is_will(TELOPT_BINARY) &&
528: my_want_state_is_do(TELOPT_BINARY)) {
1.10 art 529: printf("Already operating in binary mode with remote host.\r\n");
1.1 deraadt 530: } else {
1.10 art 531: printf("Negotiating binary mode with remote host.\r\n");
1.1 deraadt 532: tel_enter_binary(3);
533: }
534: } else {
535: if (my_want_state_is_wont(TELOPT_BINARY) &&
536: my_want_state_is_dont(TELOPT_BINARY)) {
1.10 art 537: printf("Already in network ascii mode with remote host.\r\n");
1.1 deraadt 538: } else {
1.10 art 539: printf("Negotiating network ascii mode with remote host.\r\n");
1.1 deraadt 540: tel_leave_binary(3);
541: }
542: }
543: return 1;
544: }
545:
546: static int
547: togrbinary(val)
548: int val;
549: {
550: donebinarytoggle = 1;
551:
552: if (val == -1)
553: val = my_want_state_is_do(TELOPT_BINARY) ? 0 : 1;
554:
555: if (val == 1) {
556: if (my_want_state_is_do(TELOPT_BINARY)) {
1.10 art 557: printf("Already receiving in binary mode.\r\n");
1.1 deraadt 558: } else {
1.10 art 559: printf("Negotiating binary mode on input.\r\n");
1.1 deraadt 560: tel_enter_binary(1);
561: }
562: } else {
563: if (my_want_state_is_dont(TELOPT_BINARY)) {
1.10 art 564: printf("Already receiving in network ascii mode.\r\n");
1.1 deraadt 565: } else {
1.10 art 566: printf("Negotiating network ascii mode on input.\r\n");
1.1 deraadt 567: tel_leave_binary(1);
568: }
569: }
570: return 1;
571: }
572:
573: static int
574: togxbinary(val)
575: int val;
576: {
577: donebinarytoggle = 1;
578:
579: if (val == -1)
580: val = my_want_state_is_will(TELOPT_BINARY) ? 0 : 1;
581:
582: if (val == 1) {
583: if (my_want_state_is_will(TELOPT_BINARY)) {
1.10 art 584: printf("Already transmitting in binary mode.\r\n");
1.1 deraadt 585: } else {
1.10 art 586: printf("Negotiating binary mode on output.\r\n");
1.1 deraadt 587: tel_enter_binary(2);
588: }
589: } else {
590: if (my_want_state_is_wont(TELOPT_BINARY)) {
1.10 art 591: printf("Already transmitting in network ascii mode.\r\n");
1.1 deraadt 592: } else {
1.10 art 593: printf("Negotiating network ascii mode on output.\r\n");
1.1 deraadt 594: tel_leave_binary(2);
595: }
596: }
597: return 1;
598: }
599:
600:
1.41 millert 601: static int togglehelp(void);
1.1 deraadt 602: #if defined(AUTHENTICATION)
1.41 millert 603: extern int auth_togdebug(int);
1.1 deraadt 604: #endif
1.10 art 605: #if defined(ENCRYPTION)
1.41 millert 606: extern int EncryptAutoEnc(int);
607: extern int EncryptAutoDec(int);
608: extern int EncryptDebug(int);
609: extern int EncryptVerbose(int);
1.10 art 610: #endif
611:
1.1 deraadt 612:
613: struct togglelist {
614: char *name; /* name of toggle */
615: char *help; /* help message */
616: int (*handler)(); /* routine to do actual setting */
617: int *variable;
618: char *actionexplanation;
1.8 robin 619: int needconnect; /* Need to be connected */
1.1 deraadt 620: };
621:
622: static struct togglelist Togglelist[] = {
623: { "autoflush",
624: "flushing of output when sending interrupt characters",
625: 0,
626: &autoflush,
1.10 art 627: "flush output when sending interrupt characters" },
1.1 deraadt 628: { "autosynch",
629: "automatic sending of interrupt characters in urgent mode",
630: 0,
631: &autosynch,
1.10 art 632: "send interrupt characters in urgent mode" },
1.1 deraadt 633: #if defined(AUTHENTICATION)
634: { "autologin",
635: "automatic sending of login and/or authentication info",
636: 0,
637: &autologin,
1.10 art 638: "send login name and/or authentication information" },
1.1 deraadt 639: { "authdebug",
640: "Toggle authentication debugging",
641: auth_togdebug,
642: 0,
1.10 art 643: "print authentication debugging information" },
644: #endif
645: #if defined(ENCRYPTION)
646: { "autoencrypt",
647: "automatic encryption of data stream",
648: EncryptAutoEnc,
649: 0,
650: "automatically encrypt output" },
651: { "autodecrypt",
652: "automatic decryption of data stream",
653: EncryptAutoDec,
654: 0,
655: "automatically decrypt input" },
656: { "verbose_encrypt",
657: "Toggle verbose encryption output",
658: EncryptVerbose,
659: 0,
660: "print verbose encryption output" },
661: { "encdebug",
662: "Toggle encryption debugging",
663: EncryptDebug,
664: 0,
665: "print encryption debugging information" },
1.1 deraadt 666: #endif
667: { "skiprc",
668: "don't read ~/.telnetrc file",
669: 0,
670: &skiprc,
1.10 art 671: "skip reading of ~/.telnetrc file" },
1.1 deraadt 672: { "binary",
673: "sending and receiving of binary data",
674: togbinary,
675: 0,
1.10 art 676: 0 },
1.1 deraadt 677: { "inbinary",
678: "receiving of binary data",
679: togrbinary,
680: 0,
1.10 art 681: 0 },
1.1 deraadt 682: { "outbinary",
683: "sending of binary data",
684: togxbinary,
685: 0,
1.10 art 686: 0 },
1.1 deraadt 687: { "crlf",
688: "sending carriage returns as telnet <CR><LF>",
689: togcrlf,
690: &crlf,
1.10 art 691: 0 },
1.1 deraadt 692: { "crmod",
693: "mapping of received carriage returns",
694: 0,
695: &crmod,
1.10 art 696: "map carriage return on output" },
1.1 deraadt 697: { "localchars",
698: "local recognition of certain control characters",
699: lclchars,
700: &localchars,
1.10 art 701: "recognize certain control characters" },
1.8 robin 702: { " ", "", 0, 0 }, /* empty line */
1.1 deraadt 703: #if defined(unix) && defined(TN3270)
704: { "apitrace",
705: "(debugging) toggle tracing of API transactions",
706: 0,
707: &apitrace,
1.8 robin 708: "trace API transactions", 0 },
1.1 deraadt 709: { "cursesdata",
710: "(debugging) toggle printing of hexadecimal curses data",
711: 0,
712: &cursesdata,
1.8 robin 713: "print hexadecimal representation of curses data", 0 },
1.1 deraadt 714: #endif /* defined(unix) && defined(TN3270) */
715: { "debug",
716: "debugging",
717: togdebug,
718: &debug,
1.10 art 719: "turn on socket level debugging" },
1.1 deraadt 720: { "netdata",
721: "printing of hexadecimal network data (debugging)",
722: 0,
723: &netdata,
1.10 art 724: "print hexadecimal representation of network traffic" },
1.1 deraadt 725: { "prettydump",
726: "output of \"netdata\" to user readable format (debugging)",
727: 0,
728: &prettydump,
1.10 art 729: "print user readable output for \"netdata\"" },
1.1 deraadt 730: { "options",
731: "viewing of options processing (debugging)",
732: 0,
733: &showoptions,
1.10 art 734: "show option processing" },
1.1 deraadt 735: #if defined(unix)
736: { "termdata",
737: "(debugging) toggle printing of hexadecimal terminal data",
738: 0,
739: &termdata,
1.10 art 740: "print hexadecimal representation of terminal traffic" },
1.1 deraadt 741: #endif /* defined(unix) */
742: { "?",
743: 0,
1.10 art 744: togglehelp },
1.1 deraadt 745: { "help",
746: 0,
1.10 art 747: togglehelp },
1.1 deraadt 748: { 0 }
749: };
750:
751: static int
752: togglehelp()
753: {
754: struct togglelist *c;
755:
756: for (c = Togglelist; c->name; c++) {
757: if (c->help) {
758: if (*c->help)
1.10 art 759: printf("%-15s toggle %s\r\n", c->name, c->help);
1.1 deraadt 760: else
1.10 art 761: printf("\r\n");
1.1 deraadt 762: }
763: }
1.10 art 764: printf("\r\n");
765: printf("%-15s %s\r\n", "?", "display help information");
1.1 deraadt 766: return 0;
767: }
768:
769: static void
770: settogglehelp(set)
771: int set;
772: {
773: struct togglelist *c;
774:
775: for (c = Togglelist; c->name; c++) {
776: if (c->help) {
777: if (*c->help)
1.10 art 778: printf("%-15s %s %s\r\n", c->name, set ? "enable" : "disable",
1.1 deraadt 779: c->help);
780: else
1.10 art 781: printf("\r\n");
1.1 deraadt 782: }
783: }
784: }
785:
786: #define GETTOGGLE(name) (struct togglelist *) \
787: genget(name, (char **) Togglelist, sizeof(struct togglelist))
788:
789: static int
790: toggle(argc, argv)
791: int argc;
792: char *argv[];
793: {
794: int retval = 1;
795: char *name;
796: struct togglelist *c;
797:
798: if (argc < 2) {
799: fprintf(stderr,
1.10 art 800: "Need an argument to 'toggle' command. 'toggle ?' for help.\r\n");
1.1 deraadt 801: return 0;
802: }
803: argc--;
804: argv++;
805: while (argc--) {
806: name = *argv++;
807: c = GETTOGGLE(name);
808: if (Ambiguous(c)) {
1.10 art 809: fprintf(stderr, "'%s': ambiguous argument ('toggle ?' for help).\r\n",
1.1 deraadt 810: name);
811: return 0;
812: } else if (c == 0) {
1.10 art 813: fprintf(stderr, "'%s': unknown argument ('toggle ?' for help).\r\n",
1.1 deraadt 814: name);
815: return 0;
1.8 robin 816: } else if (!connected && c->needconnect) {
1.10 art 817: printf("?Need to be connected first.\r\n");
818: printf("'send ?' for help\r\n");
1.8 robin 819: return 0;
1.1 deraadt 820: } else {
821: if (c->variable) {
822: *c->variable = !*c->variable; /* invert it */
823: if (c->actionexplanation) {
1.10 art 824: printf("%s %s.\r\n", *c->variable? "Will" : "Won't",
1.1 deraadt 825: c->actionexplanation);
826: }
827: }
828: if (c->handler) {
829: retval &= (*c->handler)(-1);
830: }
831: }
832: }
833: return retval;
834: }
835:
836: /*
837: * The following perform the "set" command.
838: */
839:
840: #ifdef USE_TERMIO
1.10 art 841: struct termios new_tc = { 0 };
1.1 deraadt 842: #endif
843:
844: struct setlist {
845: char *name; /* name */
846: char *help; /* help information */
847: void (*handler)();
848: cc_t *charp; /* where it is located at */
849: };
850:
851: static struct setlist Setlist[] = {
852: #ifdef KLUDGELINEMODE
853: { "echo", "character to toggle local echoing on/off", 0, &echoc },
854: #endif
855: { "escape", "character to escape back to telnet command mode", 0, &escape },
856: { "rlogin", "rlogin escape character", 0, &rlogin },
857: { "tracefile", "file to write trace information to", SetNetTrace, (cc_t *)NetTraceFile},
858: { " ", "" },
859: { " ", "The following need 'localchars' to be toggled true", 0, 0 },
1.10 art 860: { "flushoutput", "character to cause an Abort Output", 0, &termFlushChar },
861: { "interrupt", "character to cause an Interrupt Process", 0, &termIntChar },
862: { "quit", "character to cause an Abort process", 0, &termQuitChar },
863: { "eof", "character to cause an EOF ", 0, &termEofChar },
1.1 deraadt 864: { " ", "" },
865: { " ", "The following are for local editing in linemode", 0, 0 },
1.10 art 866: { "erase", "character to use to erase a character", 0, &termEraseChar },
867: { "kill", "character to use to erase a line", 0, &termKillChar },
868: { "lnext", "character to use for literal next", 0, &termLiteralNextChar },
869: { "susp", "character to cause a Suspend Process", 0, &termSuspChar },
870: { "reprint", "character to use for line reprint", 0, &termRprntChar },
871: { "worderase", "character to use to erase a word", 0, &termWerasChar },
872: { "start", "character to use for XON", 0, &termStartChar },
873: { "stop", "character to use for XOFF", 0, &termStopChar },
874: { "forw1", "alternate end of line character", 0, &termForw1Char },
875: { "forw2", "alternate end of line character", 0, &termForw2Char },
876: { "ayt", "alternate AYT character", 0, &termAytChar },
1.1 deraadt 877: { 0 }
878: };
879:
880: static struct setlist *
881: getset(name)
882: char *name;
883: {
884: return (struct setlist *)
885: genget(name, (char **) Setlist, sizeof(struct setlist));
886: }
887:
888: void
889: set_escape_char(s)
890: char *s;
891: {
892: if (rlogin != _POSIX_VDISABLE) {
893: rlogin = (s && *s) ? special(s) : _POSIX_VDISABLE;
1.10 art 894: printf("Telnet rlogin escape character is '%s'.\r\n",
1.1 deraadt 895: control(rlogin));
896: } else {
897: escape = (s && *s) ? special(s) : _POSIX_VDISABLE;
1.10 art 898: printf("Telnet escape character is '%s'.\r\n", control(escape));
1.1 deraadt 899: }
900: }
901:
902: static int
903: setcmd(argc, argv)
904: int argc;
905: char *argv[];
906: {
907: int value;
908: struct setlist *ct;
909: struct togglelist *c;
910:
911: if (argc < 2 || argc > 3) {
1.10 art 912: printf("Format is 'set Name Value'\r\n'set ?' for help.\r\n");
1.1 deraadt 913: return 0;
914: }
915: if ((argc == 2) && (isprefix(argv[1], "?") || isprefix(argv[1], "help"))) {
916: for (ct = Setlist; ct->name; ct++)
1.10 art 917: printf("%-15s %s\r\n", ct->name, ct->help);
918: printf("\r\n");
1.1 deraadt 919: settogglehelp(1);
1.10 art 920: printf("%-15s %s\r\n", "?", "display help information");
1.1 deraadt 921: return 0;
922: }
923:
924: ct = getset(argv[1]);
925: if (ct == 0) {
926: c = GETTOGGLE(argv[1]);
927: if (c == 0) {
1.10 art 928: fprintf(stderr, "'%s': unknown argument ('set ?' for help).\r\n",
1.1 deraadt 929: argv[1]);
930: return 0;
931: } else if (Ambiguous(c)) {
1.10 art 932: fprintf(stderr, "'%s': ambiguous argument ('set ?' for help).\r\n",
1.1 deraadt 933: argv[1]);
934: return 0;
1.8 robin 935: } else if (!connected && c->needconnect) {
1.10 art 936: printf("?Need to be connected first.\r\n");
937: printf("'send ?' for help\r\n");
1.8 robin 938: return 0;
1.1 deraadt 939: }
1.8 robin 940:
1.1 deraadt 941: if (c->variable) {
942: if ((argc == 2) || (strcmp("on", argv[2]) == 0))
943: *c->variable = 1;
944: else if (strcmp("off", argv[2]) == 0)
945: *c->variable = 0;
946: else {
1.10 art 947: printf("Format is 'set togglename [on|off]'\r\n'set ?' for help.\r\n");
1.1 deraadt 948: return 0;
949: }
950: if (c->actionexplanation) {
1.10 art 951: printf("%s %s.\r\n", *c->variable? "Will" : "Won't",
1.1 deraadt 952: c->actionexplanation);
953: }
954: }
955: if (c->handler)
956: (*c->handler)(1);
957: } else if (argc != 3) {
1.10 art 958: printf("Format is 'set Name Value'\r\n'set ?' for help.\r\n");
1.1 deraadt 959: return 0;
960: } else if (Ambiguous(ct)) {
1.10 art 961: fprintf(stderr, "'%s': ambiguous argument ('set ?' for help).\r\n",
1.1 deraadt 962: argv[1]);
963: return 0;
964: } else if (ct->handler) {
965: (*ct->handler)(argv[2]);
1.10 art 966: printf("%s set to \"%s\".\r\n", ct->name, (char *)ct->charp);
1.1 deraadt 967: } else {
968: if (strcmp("off", argv[2])) {
969: value = special(argv[2]);
970: } else {
971: value = _POSIX_VDISABLE;
972: }
973: *(ct->charp) = (cc_t)value;
1.10 art 974: printf("%s character is '%s'.\r\n", ct->name, control(*(ct->charp)));
1.1 deraadt 975: }
976: slc_check();
977: return 1;
978: }
979:
980: static int
981: unsetcmd(argc, argv)
982: int argc;
983: char *argv[];
984: {
985: struct setlist *ct;
986: struct togglelist *c;
1.39 mpech 987: char *name;
1.1 deraadt 988:
989: if (argc < 2) {
990: fprintf(stderr,
1.10 art 991: "Need an argument to 'unset' command. 'unset ?' for help.\r\n");
1.1 deraadt 992: return 0;
993: }
994: if (isprefix(argv[1], "?") || isprefix(argv[1], "help")) {
995: for (ct = Setlist; ct->name; ct++)
1.10 art 996: printf("%-15s %s\r\n", ct->name, ct->help);
997: printf("\r\n");
1.1 deraadt 998: settogglehelp(0);
1.10 art 999: printf("%-15s %s\r\n", "?", "display help information");
1.1 deraadt 1000: return 0;
1001: }
1002:
1003: argc--;
1004: argv++;
1005: while (argc--) {
1006: name = *argv++;
1007: ct = getset(name);
1008: if (ct == 0) {
1009: c = GETTOGGLE(name);
1010: if (c == 0) {
1.10 art 1011: fprintf(stderr, "'%s': unknown argument ('unset ?' for help).\r\n",
1.1 deraadt 1012: name);
1013: return 0;
1014: } else if (Ambiguous(c)) {
1.10 art 1015: fprintf(stderr, "'%s': ambiguous argument ('unset ?' for help).\r\n",
1.1 deraadt 1016: name);
1017: return 0;
1018: }
1019: if (c->variable) {
1020: *c->variable = 0;
1021: if (c->actionexplanation) {
1.10 art 1022: printf("%s %s.\r\n", *c->variable? "Will" : "Won't",
1.1 deraadt 1023: c->actionexplanation);
1024: }
1025: }
1026: if (c->handler)
1027: (*c->handler)(0);
1028: } else if (Ambiguous(ct)) {
1.10 art 1029: fprintf(stderr, "'%s': ambiguous argument ('unset ?' for help).\r\n",
1.1 deraadt 1030: name);
1031: return 0;
1032: } else if (ct->handler) {
1033: (*ct->handler)(0);
1.10 art 1034: printf("%s reset to \"%s\".\r\n", ct->name, (char *)ct->charp);
1.1 deraadt 1035: } else {
1036: *(ct->charp) = _POSIX_VDISABLE;
1.10 art 1037: printf("%s character is '%s'.\r\n", ct->name, control(*(ct->charp)));
1.1 deraadt 1038: }
1039: }
1040: return 1;
1041: }
1042:
1043: /*
1044: * The following are the data structures and routines for the
1045: * 'mode' command.
1046: */
1047: #ifdef KLUDGELINEMODE
1048: extern int kludgelinemode;
1049:
1050: static int
1051: dokludgemode()
1052: {
1053: kludgelinemode = 1;
1054: send_wont(TELOPT_LINEMODE, 1);
1055: send_dont(TELOPT_SGA, 1);
1056: send_dont(TELOPT_ECHO, 1);
1.10 art 1057: return 1;
1.1 deraadt 1058: }
1059: #endif
1060:
1061: static int
1062: dolinemode()
1063: {
1064: #ifdef KLUDGELINEMODE
1065: if (kludgelinemode)
1066: send_dont(TELOPT_SGA, 1);
1067: #endif
1068: send_will(TELOPT_LINEMODE, 1);
1069: send_dont(TELOPT_ECHO, 1);
1070: return 1;
1071: }
1072:
1073: static int
1074: docharmode()
1075: {
1076: #ifdef KLUDGELINEMODE
1077: if (kludgelinemode)
1078: send_do(TELOPT_SGA, 1);
1079: else
1080: #endif
1081: send_wont(TELOPT_LINEMODE, 1);
1082: send_do(TELOPT_ECHO, 1);
1083: return 1;
1084: }
1085:
1086: static int
1087: dolmmode(bit, on)
1088: int bit, on;
1089: {
1090: unsigned char c;
1091: extern int linemode;
1092:
1093: if (my_want_state_is_wont(TELOPT_LINEMODE)) {
1.10 art 1094: printf("?Need to have LINEMODE option enabled first.\r\n");
1095: printf("'mode ?' for help.\r\n");
1.1 deraadt 1096: return 0;
1097: }
1098:
1099: if (on)
1100: c = (linemode | bit);
1101: else
1102: c = (linemode & ~bit);
1103: lm_mode(&c, 1, 1);
1104: return 1;
1105: }
1106:
1107: int
1.10 art 1108: tn_setmode(bit)
1.1 deraadt 1109: {
1110: return dolmmode(bit, 1);
1111: }
1112:
1113: int
1.10 art 1114: tn_clearmode(bit)
1.1 deraadt 1115: {
1116: return dolmmode(bit, 0);
1117: }
1118:
1119: struct modelist {
1120: char *name; /* command name */
1121: char *help; /* help string */
1122: int (*handler)(); /* routine which executes command */
1123: int needconnect; /* Do we need to be connected to execute? */
1124: int arg1;
1125: };
1126:
1.40 millert 1127: static int modehelp(void);
1.1 deraadt 1128:
1129: static struct modelist ModeList[] = {
1130: { "character", "Disable LINEMODE option", docharmode, 1 },
1131: #ifdef KLUDGELINEMODE
1132: { "", "(or disable obsolete line-by-line mode)", 0 },
1133: #endif
1134: { "line", "Enable LINEMODE option", dolinemode, 1 },
1135: #ifdef KLUDGELINEMODE
1136: { "", "(or enable obsolete line-by-line mode)", 0 },
1137: #endif
1138: { "", "", 0 },
1139: { "", "These require the LINEMODE option to be enabled", 0 },
1.10 art 1140: { "isig", "Enable signal trapping", tn_setmode, 1, MODE_TRAPSIG },
1141: { "+isig", 0, tn_setmode, 1, MODE_TRAPSIG },
1142: { "-isig", "Disable signal trapping", tn_clearmode, 1, MODE_TRAPSIG },
1143: { "edit", "Enable character editing", tn_setmode, 1, MODE_EDIT },
1144: { "+edit", 0, tn_setmode, 1, MODE_EDIT },
1145: { "-edit", "Disable character editing", tn_clearmode, 1, MODE_EDIT },
1146: { "softtabs", "Enable tab expansion", tn_setmode, 1, MODE_SOFT_TAB },
1147: { "+softtabs", 0, tn_setmode, 1, MODE_SOFT_TAB },
1148: { "-softtabs", "Disable character editing", tn_clearmode, 1, MODE_SOFT_TAB },
1149: { "litecho", "Enable literal character echo", tn_setmode, 1, MODE_LIT_ECHO },
1150: { "+litecho", 0, tn_setmode, 1, MODE_LIT_ECHO },
1151: { "-litecho", "Disable literal character echo", tn_clearmode, 1, MODE_LIT_ECHO },
1.1 deraadt 1152: { "help", 0, modehelp, 0 },
1153: #ifdef KLUDGELINEMODE
1154: { "kludgeline", 0, dokludgemode, 1 },
1155: #endif
1156: { "", "", 0 },
1157: { "?", "Print help information", modehelp, 0 },
1158: { 0 },
1159: };
1160:
1161:
1.10 art 1162: static int
1.1 deraadt 1163: modehelp()
1164: {
1165: struct modelist *mt;
1166:
1.10 art 1167: printf("format is: 'mode Mode', where 'Mode' is one of:\r\n\r\n");
1.1 deraadt 1168: for (mt = ModeList; mt->name; mt++) {
1169: if (mt->help) {
1170: if (*mt->help)
1.10 art 1171: printf("%-15s %s\r\n", mt->name, mt->help);
1.1 deraadt 1172: else
1.10 art 1173: printf("\r\n");
1.1 deraadt 1174: }
1175: }
1176: return 0;
1177: }
1178:
1179: #define GETMODECMD(name) (struct modelist *) \
1180: genget(name, (char **) ModeList, sizeof(struct modelist))
1181:
1182: static int
1183: modecmd(argc, argv)
1184: int argc;
1185: char *argv[];
1186: {
1187: struct modelist *mt;
1188:
1189: if (argc != 2) {
1.10 art 1190: printf("'mode' command requires an argument\r\n");
1191: printf("'mode ?' for help.\r\n");
1.1 deraadt 1192: } else if ((mt = GETMODECMD(argv[1])) == 0) {
1.10 art 1193: fprintf(stderr, "Unknown mode '%s' ('mode ?' for help).\r\n", argv[1]);
1.1 deraadt 1194: } else if (Ambiguous(mt)) {
1.10 art 1195: fprintf(stderr, "Ambiguous mode '%s' ('mode ?' for help).\r\n", argv[1]);
1.1 deraadt 1196: } else if (mt->needconnect && !connected) {
1.10 art 1197: printf("?Need to be connected first.\r\n");
1198: printf("'mode ?' for help.\r\n");
1.1 deraadt 1199: } else if (mt->handler) {
1200: return (*mt->handler)(mt->arg1);
1201: }
1202: return 0;
1203: }
1204:
1205: /*
1206: * The following data structures and routines implement the
1207: * "display" command.
1208: */
1209:
1210: static int
1211: display(argc, argv)
1212: int argc;
1213: char *argv[];
1214: {
1215: struct togglelist *tl;
1216: struct setlist *sl;
1217:
1218: #define dotog(tl) if (tl->variable && tl->actionexplanation) { \
1219: if (*tl->variable) { \
1220: printf("will"); \
1221: } else { \
1222: printf("won't"); \
1223: } \
1.10 art 1224: printf(" %s.\r\n", tl->actionexplanation); \
1.1 deraadt 1225: }
1226:
1227: #define doset(sl) if (sl->name && *sl->name != ' ') { \
1228: if (sl->handler == 0) \
1.10 art 1229: printf("%-15s [%s]\r\n", sl->name, control(*sl->charp)); \
1.1 deraadt 1230: else \
1.10 art 1231: printf("%-15s \"%s\"\r\n", sl->name, (char *)sl->charp); \
1.1 deraadt 1232: }
1233:
1234: if (argc == 1) {
1235: for (tl = Togglelist; tl->name; tl++) {
1236: dotog(tl);
1237: }
1.10 art 1238: printf("\r\n");
1.1 deraadt 1239: for (sl = Setlist; sl->name; sl++) {
1240: doset(sl);
1241: }
1242: } else {
1243: int i;
1244:
1245: for (i = 1; i < argc; i++) {
1246: sl = getset(argv[i]);
1247: tl = GETTOGGLE(argv[i]);
1248: if (Ambiguous(sl) || Ambiguous(tl)) {
1.10 art 1249: printf("?Ambiguous argument '%s'.\r\n", argv[i]);
1.1 deraadt 1250: return 0;
1251: } else if (!sl && !tl) {
1.10 art 1252: printf("?Unknown argument '%s'.\r\n", argv[i]);
1.1 deraadt 1253: return 0;
1254: } else {
1255: if (tl) {
1256: dotog(tl);
1257: }
1258: if (sl) {
1259: doset(sl);
1260: }
1261: }
1262: }
1263: }
1264: /*@*/optionstatus();
1.10 art 1265: #if defined(ENCRYPTION)
1266: EncryptStatus();
1267: #endif
1.1 deraadt 1268: return 1;
1269: #undef doset
1270: #undef dotog
1271: }
1.10 art 1272:
1.1 deraadt 1273: /*
1274: * The following are the data structures, and many of the routines,
1275: * relating to command processing.
1276: */
1277:
1278: /*
1279: * Set the escape character.
1280: */
1281: static int
1282: setescape(argc, argv)
1283: int argc;
1284: char *argv[];
1285: {
1.39 mpech 1286: char *arg;
1.1 deraadt 1287: char buf[50];
1288:
1289: printf(
1.10 art 1290: "Deprecated usage - please use 'set escape%s%s' in the future.\r\n",
1.1 deraadt 1291: (argc > 2)? " ":"", (argc > 2)? argv[1]: "");
1292: if (argc > 2)
1293: arg = argv[1];
1294: else {
1295: printf("new escape character: ");
1296: (void) fgets(buf, sizeof(buf), stdin);
1297: arg = buf;
1298: }
1299: if (arg[0] != '\0')
1300: escape = arg[0];
1301: if (!In3270) {
1.10 art 1302: printf("Escape character is '%s'.\r\n", control(escape));
1.1 deraadt 1303: }
1304: (void) fflush(stdout);
1305: return 1;
1306: }
1307:
1308: /*VARARGS*/
1309: static int
1310: togcrmod()
1311: {
1312: crmod = !crmod;
1.10 art 1313: printf("Deprecated usage - please use 'toggle crmod' in the future.\r\n");
1314: printf("%s map carriage return on output.\r\n", crmod ? "Will" : "Won't");
1.1 deraadt 1315: (void) fflush(stdout);
1316: return 1;
1317: }
1318:
1319: /*VARARGS*/
1.11 deraadt 1320: int
1.10 art 1321: telnetsuspend()
1.1 deraadt 1322: {
1323: #ifdef SIGTSTP
1324: setcommandmode();
1325: {
1326: long oldrows, oldcols, newrows, newcols, err;
1327:
1328: err = (TerminalWindowSize(&oldrows, &oldcols) == 0) ? 1 : 0;
1329: (void) kill(0, SIGTSTP);
1330: /*
1331: * If we didn't get the window size before the SUSPEND, but we
1.3 niklas 1332: * can get them now (?), then send the NAWS to make sure that
1.1 deraadt 1333: * we are set up for the right window size.
1334: */
1335: if (TerminalWindowSize(&newrows, &newcols) && connected &&
1336: (err || ((oldrows != newrows) || (oldcols != newcols)))) {
1337: sendnaws();
1338: }
1339: }
1340: /* reget parameters in case they were changed */
1341: TerminalSaveState();
1342: setconnmode(0);
1343: #else
1.10 art 1344: printf("Suspend is not supported. Try the '!' command instead\r\n");
1.1 deraadt 1345: #endif
1346: return 1;
1347: }
1348:
1349: #if !defined(TN3270)
1350: /*ARGSUSED*/
1351: int
1352: shell(argc, argv)
1353: int argc;
1354: char *argv[];
1355: {
1356: long oldrows, oldcols, newrows, newcols, err;
1357:
1358: setcommandmode();
1359:
1360: err = (TerminalWindowSize(&oldrows, &oldcols) == 0) ? 1 : 0;
1361: switch(vfork()) {
1362: case -1:
1.10 art 1363: perror("Fork failed\r\n");
1.1 deraadt 1364: break;
1365:
1366: case 0:
1367: {
1368: /*
1369: * Fire up the shell in the child.
1370: */
1.39 mpech 1371: char *shellp, *shellname;
1.1 deraadt 1372:
1373: shellp = getenv("SHELL");
1374: if (shellp == NULL)
1375: shellp = "/bin/sh";
1.3 niklas 1376: if ((shellname = strrchr(shellp, '/')) == 0)
1.1 deraadt 1377: shellname = shellp;
1378: else
1379: shellname++;
1380: if (argc > 1)
1.36 deraadt 1381: execl(shellp, shellname, "-c", &saveline[1], (char *)NULL);
1.1 deraadt 1382: else
1.36 deraadt 1383: execl(shellp, shellname, (char *)NULL);
1.1 deraadt 1384: perror("Execl");
1385: _exit(1);
1386: }
1387: default:
1388: (void)wait((int *)0); /* Wait for the shell to complete */
1389:
1390: if (TerminalWindowSize(&newrows, &newcols) && connected &&
1391: (err || ((oldrows != newrows) || (oldcols != newcols)))) {
1392: sendnaws();
1393: }
1394: break;
1395: }
1396: return 1;
1397: }
1398: #else /* !defined(TN3270) */
1399: extern int shell();
1400: #endif /* !defined(TN3270) */
1401:
1402: /*VARARGS*/
1.15 art 1403: static int
1.1 deraadt 1404: bye(argc, argv)
1405: int argc; /* Number of arguments */
1406: char *argv[]; /* arguments */
1407: {
1408: extern int resettermname;
1409:
1410: if (connected) {
1411: (void) shutdown(net, 2);
1.10 art 1412: printf("Connection closed.\r\n");
1.1 deraadt 1413: (void) NetClose(net);
1414: connected = 0;
1415: resettermname = 1;
1.10 art 1416: #if defined(AUTHENTICATION) || defined(ENCRYPTION)
1.1 deraadt 1417: auth_encrypt_connect(connected);
1418: #endif /* defined(AUTHENTICATION) */
1419: /* reset options */
1420: tninit();
1421: #if defined(TN3270)
1422: SetIn3270(); /* Get out of 3270 mode */
1423: #endif /* defined(TN3270) */
1424: }
1425: if ((argc != 2) || (strcmp(argv[1], "fromquit") != 0)) {
1426: longjmp(toplevel, 1);
1427: /* NOTREACHED */
1428: }
1.10 art 1429: return 0; /* NOTREACHED */
1.1 deraadt 1430: }
1431:
1432: /*VARARGS*/
1.10 art 1433: int
1.1 deraadt 1434: quit()
1435: {
1436: (void) call(bye, "bye", "fromquit", 0);
1437: Exit(0);
1.10 art 1438: return 0; /*NOTREACHED*/
1.1 deraadt 1439: }
1440:
1441: /*VARARGS*/
1.10 art 1442: static int
1.1 deraadt 1443: logout()
1444: {
1445: send_do(TELOPT_LOGOUT, 1);
1446: (void) netflush();
1447: return 1;
1448: }
1449:
1450:
1451: /*
1452: * The SLC command.
1453: */
1454:
1455: struct slclist {
1456: char *name;
1457: char *help;
1458: void (*handler)();
1459: int arg;
1460: };
1461:
1462: static void slc_help();
1463:
1464: struct slclist SlcList[] = {
1465: { "export", "Use local special character definitions",
1466: slc_mode_export, 0 },
1467: { "import", "Use remote special character definitions",
1468: slc_mode_import, 1 },
1469: { "check", "Verify remote special character definitions",
1470: slc_mode_import, 0 },
1471: { "help", 0, slc_help, 0 },
1472: { "?", "Print help information", slc_help, 0 },
1473: { 0 },
1474: };
1475:
1476: static void
1477: slc_help()
1478: {
1479: struct slclist *c;
1480:
1481: for (c = SlcList; c->name; c++) {
1482: if (c->help) {
1483: if (*c->help)
1.10 art 1484: printf("%-15s %s\r\n", c->name, c->help);
1.1 deraadt 1485: else
1.10 art 1486: printf("\r\n");
1.1 deraadt 1487: }
1488: }
1489: }
1490:
1491: static struct slclist *
1492: getslc(name)
1493: char *name;
1494: {
1495: return (struct slclist *)
1496: genget(name, (char **) SlcList, sizeof(struct slclist));
1497: }
1498:
1.15 art 1499: static int
1.1 deraadt 1500: slccmd(argc, argv)
1501: int argc;
1502: char *argv[];
1503: {
1504: struct slclist *c;
1505:
1506: if (argc != 2) {
1507: fprintf(stderr,
1.10 art 1508: "Need an argument to 'slc' command. 'slc ?' for help.\r\n");
1.1 deraadt 1509: return 0;
1510: }
1511: c = getslc(argv[1]);
1512: if (c == 0) {
1.10 art 1513: fprintf(stderr, "'%s': unknown argument ('slc ?' for help).\r\n",
1.1 deraadt 1514: argv[1]);
1.3 niklas 1515: return 0;
1.1 deraadt 1516: }
1517: if (Ambiguous(c)) {
1.10 art 1518: fprintf(stderr, "'%s': ambiguous argument ('slc ?' for help).\r\n",
1.1 deraadt 1519: argv[1]);
1.3 niklas 1520: return 0;
1.1 deraadt 1521: }
1522: (*c->handler)(c->arg);
1523: slcstate();
1524: return 1;
1525: }
1526:
1527: /*
1528: * The ENVIRON command.
1529: */
1530:
1531: struct envlist {
1532: char *name;
1533: char *help;
1534: void (*handler)();
1535: int narg;
1536: };
1537:
1.41 millert 1538: static void env_help(void);
1.1 deraadt 1539:
1540: struct envlist EnvList[] = {
1541: { "define", "Define an environment variable",
1542: (void (*)())env_define, 2 },
1543: { "undefine", "Undefine an environment variable",
1544: env_undefine, 1 },
1545: { "export", "Mark an environment variable for automatic export",
1546: env_export, 1 },
1547: { "unexport", "Don't mark an environment variable for automatic export",
1548: env_unexport, 1 },
1549: { "send", "Send an environment variable", env_send, 1 },
1550: { "list", "List the current environment variables",
1551: env_list, 0 },
1552: #if defined(OLD_ENVIRON) && defined(ENV_HACK)
1553: { "varval", "Reverse VAR and VALUE (auto, right, wrong, status)",
1554: env_varval, 1 },
1555: #endif
1556: { "help", 0, env_help, 0 },
1557: { "?", "Print help information", env_help, 0 },
1558: { 0 },
1559: };
1560:
1561: static void
1562: env_help()
1563: {
1564: struct envlist *c;
1565:
1566: for (c = EnvList; c->name; c++) {
1567: if (c->help) {
1568: if (*c->help)
1.10 art 1569: printf("%-15s %s\r\n", c->name, c->help);
1.1 deraadt 1570: else
1.10 art 1571: printf("\r\n");
1.1 deraadt 1572: }
1573: }
1574: }
1575:
1576: static struct envlist *
1577: getenvcmd(name)
1578: char *name;
1579: {
1580: return (struct envlist *)
1581: genget(name, (char **) EnvList, sizeof(struct envlist));
1582: }
1583:
1.15 art 1584: int
1.1 deraadt 1585: env_cmd(argc, argv)
1586: int argc;
1587: char *argv[];
1588: {
1589: struct envlist *c;
1590:
1591: if (argc < 2) {
1592: fprintf(stderr,
1.10 art 1593: "Need an argument to 'environ' command. 'environ ?' for help.\r\n");
1.1 deraadt 1594: return 0;
1595: }
1596: c = getenvcmd(argv[1]);
1597: if (c == 0) {
1.10 art 1598: fprintf(stderr, "'%s': unknown argument ('environ ?' for help).\r\n",
1.1 deraadt 1599: argv[1]);
1.3 niklas 1600: return 0;
1.1 deraadt 1601: }
1602: if (Ambiguous(c)) {
1.10 art 1603: fprintf(stderr, "'%s': ambiguous argument ('environ ?' for help).\r\n",
1.1 deraadt 1604: argv[1]);
1.3 niklas 1605: return 0;
1.1 deraadt 1606: }
1607: if (c->narg + 2 != argc) {
1608: fprintf(stderr,
1.10 art 1609: "Need %s%d argument%s to 'environ %s' command. 'environ ?' for help.\r\n",
1.1 deraadt 1610: c->narg < argc + 2 ? "only " : "",
1611: c->narg, c->narg == 1 ? "" : "s", c->name);
1612: return 0;
1613: }
1614: (*c->handler)(argv[2], argv[3]);
1615: return 1;
1616: }
1617:
1618: struct env_lst {
1619: struct env_lst *next; /* pointer to next structure */
1620: struct env_lst *prev; /* pointer to previous structure */
1621: unsigned char *var; /* pointer to variable name */
1622: unsigned char *value; /* pointer to variable value */
1623: int export; /* 1 -> export with default list of variables */
1624: int welldefined; /* A well defined variable */
1625: };
1626:
1627: struct env_lst envlisthead;
1628:
1629: struct env_lst *
1630: env_find(var)
1631: unsigned char *var;
1632: {
1.39 mpech 1633: struct env_lst *ep;
1.1 deraadt 1634:
1635: for (ep = envlisthead.next; ep; ep = ep->next) {
1636: if (strcmp((char *)ep->var, (char *)var) == 0)
1637: return(ep);
1638: }
1639: return(NULL);
1640: }
1641:
1642: void
1643: env_init()
1644: {
1645: extern char **environ;
1.10 art 1646: char **epp, *cp;
1647: struct env_lst *ep;
1.1 deraadt 1648:
1649: for (epp = environ; *epp; epp++) {
1.10 art 1650: if ((cp = strchr(*epp, '='))) {
1.1 deraadt 1651: *cp = '\0';
1652: ep = env_define((unsigned char *)*epp,
1653: (unsigned char *)cp+1);
1654: ep->export = 0;
1655: *cp = '=';
1656: }
1657: }
1658: /*
1659: * Special case for DISPLAY variable. If it is ":0.0" or
1660: * "unix:0.0", we have to get rid of "unix" and insert our
1661: * hostname.
1662: */
1663: if ((ep = env_find("DISPLAY"))
1664: && ((*ep->value == ':')
1.3 niklas 1665: || (strncmp((char *)ep->value, "unix:", 5) == 0))) {
1.18 deraadt 1666: char hbuf[MAXHOSTNAMELEN];
1.3 niklas 1667: char *cp2 = strchr((char *)ep->value, ':');
1.1 deraadt 1668:
1.18 deraadt 1669: gethostname(hbuf, sizeof hbuf);
1.10 art 1670:
1671: /* If this is not the full name, try to get it via DNS */
1672: if (strchr(hbuf, '.') == 0) {
1673: struct hostent *he = gethostbyname(hbuf);
1674: if (he != 0)
1.19 deraadt 1675: strncpy(hbuf, he->h_name, sizeof hbuf-1);
1676: hbuf[sizeof hbuf-1] = '\0';
1.10 art 1677: }
1678:
1.44 pvalchev 1679: if (asprintf (&cp, "%s%s", hbuf, cp2) == -1)
1.14 art 1680: err(1, "asprintf");
1.10 art 1681:
1.1 deraadt 1682: free(ep->value);
1683: ep->value = (unsigned char *)cp;
1684: }
1685: /*
1686: * If USER is not defined, but LOGNAME is, then add
1687: * USER with the value from LOGNAME. By default, we
1688: * don't export the USER variable.
1689: */
1690: if ((env_find("USER") == NULL) && (ep = env_find("LOGNAME"))) {
1691: env_define((unsigned char *)"USER", ep->value);
1692: env_unexport((unsigned char *)"USER");
1693: }
1694: env_export((unsigned char *)"DISPLAY");
1695: env_export((unsigned char *)"PRINTER");
1.10 art 1696: env_export((unsigned char *)"XAUTHORITY");
1.1 deraadt 1697: }
1698:
1699: struct env_lst *
1700: env_define(var, value)
1701: unsigned char *var, *value;
1702: {
1.39 mpech 1703: struct env_lst *ep;
1.1 deraadt 1704:
1.10 art 1705: if ((ep = env_find(var))) {
1.1 deraadt 1706: if (ep->var)
1707: free(ep->var);
1708: if (ep->value)
1709: free(ep->value);
1710: } else {
1.14 art 1711: if ((ep = malloc(sizeof(struct env_lst))) == NULL)
1712: err(1, "malloc");
1.1 deraadt 1713: ep->next = envlisthead.next;
1714: envlisthead.next = ep;
1715: ep->prev = &envlisthead;
1716: if (ep->next)
1717: ep->next->prev = ep;
1718: }
1.10 art 1719: ep->welldefined = opt_welldefined((char *)var);
1.1 deraadt 1720: ep->export = 1;
1.14 art 1721: if ((ep->var = strdup((char *)var)) == NULL)
1722: err(1, "strdup");
1723: if ((ep->value = strdup((char *)value)) == NULL)
1724: err(1, "strdup");
1.1 deraadt 1725: return(ep);
1726: }
1727:
1728: void
1729: env_undefine(var)
1730: unsigned char *var;
1731: {
1.39 mpech 1732: struct env_lst *ep;
1.1 deraadt 1733:
1.10 art 1734: if ((ep = env_find(var))) {
1.1 deraadt 1735: ep->prev->next = ep->next;
1736: if (ep->next)
1737: ep->next->prev = ep->prev;
1738: if (ep->var)
1739: free(ep->var);
1740: if (ep->value)
1741: free(ep->value);
1742: free(ep);
1743: }
1744: }
1745:
1746: void
1747: env_export(var)
1748: unsigned char *var;
1749: {
1.39 mpech 1750: struct env_lst *ep;
1.1 deraadt 1751:
1.10 art 1752: if ((ep = env_find(var)))
1.1 deraadt 1753: ep->export = 1;
1754: }
1755:
1756: void
1757: env_unexport(var)
1758: unsigned char *var;
1759: {
1.39 mpech 1760: struct env_lst *ep;
1.1 deraadt 1761:
1.15 art 1762: if ((ep = env_find(var)) != NULL)
1.1 deraadt 1763: ep->export = 0;
1764: }
1765:
1766: void
1767: env_send(var)
1768: unsigned char *var;
1769: {
1.39 mpech 1770: struct env_lst *ep;
1.1 deraadt 1771:
1.3 niklas 1772: if (my_state_is_wont(TELOPT_NEW_ENVIRON)
1.1 deraadt 1773: #ifdef OLD_ENVIRON
1774: && my_state_is_wont(TELOPT_OLD_ENVIRON)
1775: #endif
1776: ) {
1777: fprintf(stderr,
1.10 art 1778: "Cannot send '%s': Telnet ENVIRON option not enabled\r\n",
1.1 deraadt 1779: var);
1780: return;
1781: }
1782: ep = env_find(var);
1783: if (ep == 0) {
1.10 art 1784: fprintf(stderr, "Cannot send '%s': variable not defined\r\n",
1.1 deraadt 1785: var);
1786: return;
1787: }
1788: env_opt_start_info();
1789: env_opt_add(ep->var);
1790: env_opt_end(0);
1791: }
1792:
1793: void
1794: env_list()
1795: {
1.39 mpech 1796: struct env_lst *ep;
1.1 deraadt 1797:
1798: for (ep = envlisthead.next; ep; ep = ep->next) {
1.10 art 1799: printf("%c %-20s %s\r\n", ep->export ? '*' : ' ',
1.1 deraadt 1800: ep->var, ep->value);
1801: }
1802: }
1803:
1804: unsigned char *
1805: env_default(init, welldefined)
1806: int init;
1807: {
1808: static struct env_lst *nep = NULL;
1809:
1810: if (init) {
1811: nep = &envlisthead;
1.10 art 1812: return NULL;
1.1 deraadt 1813: }
1814: if (nep) {
1.10 art 1815: while ((nep = nep->next)) {
1.1 deraadt 1816: if (nep->export && (nep->welldefined == welldefined))
1817: return(nep->var);
1818: }
1819: }
1820: return(NULL);
1821: }
1822:
1823: unsigned char *
1.46.4.1! brad 1824: env_getvalue(var, exported_only)
1.1 deraadt 1825: unsigned char *var;
1.46.4.1! brad 1826: int exported_only;
1.1 deraadt 1827: {
1.39 mpech 1828: struct env_lst *ep;
1.1 deraadt 1829:
1.46.4.1! brad 1830: if ((ep = env_find(var)) && (!exported_only || ep->export))
1.1 deraadt 1831: return(ep->value);
1832: return(NULL);
1833: }
1834:
1835: #if defined(OLD_ENVIRON) && defined(ENV_HACK)
1836: void
1837: env_varval(what)
1838: unsigned char *what;
1839: {
1840: extern int old_env_var, old_env_value, env_auto;
1841: int len = strlen((char *)what);
1842:
1843: if (len == 0)
1844: goto unknown;
1845:
1846: if (strncasecmp((char *)what, "status", len) == 0) {
1847: if (env_auto)
1848: printf("%s%s", "VAR and VALUE are/will be ",
1.10 art 1849: "determined automatically\r\n");
1.1 deraadt 1850: if (old_env_var == OLD_ENV_VAR)
1.10 art 1851: printf("VAR and VALUE set to correct definitions\r\n");
1.1 deraadt 1852: else
1.10 art 1853: printf("VAR and VALUE definitions are reversed\r\n");
1.1 deraadt 1854: } else if (strncasecmp((char *)what, "auto", len) == 0) {
1855: env_auto = 1;
1856: old_env_var = OLD_ENV_VALUE;
1857: old_env_value = OLD_ENV_VAR;
1858: } else if (strncasecmp((char *)what, "right", len) == 0) {
1859: env_auto = 0;
1860: old_env_var = OLD_ENV_VAR;
1861: old_env_value = OLD_ENV_VALUE;
1862: } else if (strncasecmp((char *)what, "wrong", len) == 0) {
1863: env_auto = 0;
1864: old_env_var = OLD_ENV_VALUE;
1865: old_env_value = OLD_ENV_VAR;
1866: } else {
1867: unknown:
1.10 art 1868: printf("Unknown \"varval\" command. (\"auto\", \"right\", \"wrong\", \"status\")\r\n");
1.1 deraadt 1869: }
1870: }
1871: #endif
1872:
1873: #if defined(AUTHENTICATION)
1874: /*
1875: * The AUTHENTICATE command.
1876: */
1877:
1878: struct authlist {
1879: char *name;
1880: char *help;
1881: int (*handler)();
1882: int narg;
1883: };
1884:
1885: static int
1.41 millert 1886: auth_help(void);
1.1 deraadt 1887:
1888: struct authlist AuthList[] = {
1889: { "status", "Display current status of authentication information",
1890: auth_status, 0 },
1891: { "disable", "Disable an authentication type ('auth disable ?' for more)",
1892: auth_disable, 1 },
1893: { "enable", "Enable an authentication type ('auth enable ?' for more)",
1894: auth_enable, 1 },
1895: { "help", 0, auth_help, 0 },
1896: { "?", "Print help information", auth_help, 0 },
1897: { 0 },
1898: };
1899:
1900: static int
1901: auth_help()
1902: {
1903: struct authlist *c;
1904:
1905: for (c = AuthList; c->name; c++) {
1906: if (c->help) {
1907: if (*c->help)
1.10 art 1908: printf("%-15s %s\r\n", c->name, c->help);
1.1 deraadt 1909: else
1.10 art 1910: printf("\r\n");
1.1 deraadt 1911: }
1912: }
1913: return 0;
1914: }
1915:
1.15 art 1916: int
1.1 deraadt 1917: auth_cmd(argc, argv)
1918: int argc;
1919: char *argv[];
1920: {
1921: struct authlist *c;
1922:
1.3 niklas 1923: if (argc < 2) {
1924: fprintf(stderr,
1.10 art 1925: "Need an argument to 'auth' command. 'auth ?' for help.\r\n");
1.3 niklas 1926: return 0;
1927: }
1928:
1.1 deraadt 1929: c = (struct authlist *)
1930: genget(argv[1], (char **) AuthList, sizeof(struct authlist));
1931: if (c == 0) {
1.10 art 1932: fprintf(stderr, "'%s': unknown argument ('auth ?' for help).\r\n",
1.1 deraadt 1933: argv[1]);
1.3 niklas 1934: return 0;
1.1 deraadt 1935: }
1936: if (Ambiguous(c)) {
1.10 art 1937: fprintf(stderr, "'%s': ambiguous argument ('auth ?' for help).\r\n",
1.1 deraadt 1938: argv[1]);
1.3 niklas 1939: return 0;
1.1 deraadt 1940: }
1941: if (c->narg + 2 != argc) {
1942: fprintf(stderr,
1.10 art 1943: "Need %s%d argument%s to 'auth %s' command. 'auth ?' for help.\r\n",
1.1 deraadt 1944: c->narg < argc + 2 ? "only " : "",
1945: c->narg, c->narg == 1 ? "" : "s", c->name);
1946: return 0;
1947: }
1948: return((*c->handler)(argv[2], argv[3]));
1949: }
1950: #endif
1951:
1.10 art 1952: #if defined(ENCRYPTION)
1953: /*
1954: * The ENCRYPT command.
1955: */
1956:
1957: struct encryptlist {
1958: char *name;
1959: char *help;
1960: int (*handler)();
1961: int needconnect;
1962: int minarg;
1963: int maxarg;
1964: };
1965:
1966: static int
1967: EncryptHelp (void);
1968:
1969: struct encryptlist EncryptList[] = {
1970: { "enable", "Enable encryption. ('encrypt enable ?' for more)",
1971: EncryptEnable, 1, 1, 2 },
1972: { "disable", "Disable encryption. ('encrypt enable ?' for more)",
1973: EncryptDisable, 0, 1, 2 },
1.20 art 1974: { "type", "Set encryption type. ('encrypt type ?' for more)",
1.10 art 1975: EncryptType, 0, 1, 1 },
1976: { "start", "Start encryption. ('encrypt start ?' for more)",
1977: EncryptStart, 1, 0, 1 },
1978: { "stop", "Stop encryption. ('encrypt stop ?' for more)",
1979: EncryptStop, 1, 0, 1 },
1980: { "input", "Start encrypting the input stream",
1981: EncryptStartInput, 1, 0, 0 },
1982: { "-input", "Stop encrypting the input stream",
1983: EncryptStopInput, 1, 0, 0 },
1984: { "output", "Start encrypting the output stream",
1985: EncryptStartOutput, 1, 0, 0 },
1986: { "-output", "Stop encrypting the output stream",
1987: EncryptStopOutput, 1, 0, 0 },
1988:
1989: { "status", "Display current status of authentication information",
1990: EncryptStatus, 0, 0, 0 },
1991: { "help", 0, EncryptHelp, 0, 0, 0 },
1992: { "?", "Print help information", EncryptHelp, 0, 0, 0 },
1993: { 0 },
1994: };
1995:
1996: static int
1997: EncryptHelp()
1998: {
1999: struct encryptlist *c;
2000:
2001: for (c = EncryptList; c->name; c++) {
2002: if (c->help) {
2003: if (*c->help)
2004: printf("%-15s %s\r\n", c->name, c->help);
2005: else
2006: printf("\r\n");
2007: }
2008: }
2009: return 0;
2010: }
2011:
2012: static int
2013: encrypt_cmd(int argc, char **argv)
2014: {
2015: struct encryptlist *c;
1.13 art 2016:
2017: if (argc < 2) {
2018: fprintf(stderr, "Need at least one argument for 'encrypt' command.\n");
2019: fprintf(stderr, "('encrypt ?' for help)\n");
2020: return 0;
2021: }
2022:
1.10 art 2023: c = (struct encryptlist *)
2024: genget(argv[1], (char **) EncryptList, sizeof(struct encryptlist));
2025: if (c == 0) {
2026: fprintf(stderr, "'%s': unknown argument ('encrypt ?' for help).\r\n",
2027: argv[1]);
2028: return 0;
2029: }
2030: if (Ambiguous(c)) {
2031: fprintf(stderr, "'%s': ambiguous argument ('encrypt ?' for help).\r\n",
2032: argv[1]);
2033: return 0;
2034: }
2035: argc -= 2;
2036: if (argc < c->minarg || argc > c->maxarg) {
2037: if (c->minarg == c->maxarg) {
2038: fprintf(stderr, "Need %s%d argument%s ",
2039: c->minarg < argc ? "only " : "", c->minarg,
2040: c->minarg == 1 ? "" : "s");
2041: } else {
2042: fprintf(stderr, "Need %s%d-%d arguments ",
2043: c->maxarg < argc ? "only " : "", c->minarg, c->maxarg);
2044: }
2045: fprintf(stderr, "to 'encrypt %s' command. 'encrypt ?' for help.\r\n",
2046: c->name);
2047: return 0;
2048: }
2049: if (c->needconnect && !connected) {
2050: if (!(argc && (isprefix(argv[2], "help") || isprefix(argv[2], "?")))) {
2051: printf("?Need to be connected first.\r\n");
2052: return 0;
2053: }
2054: }
2055: return ((*c->handler)(argc > 0 ? argv[2] : 0,
2056: argc > 1 ? argv[3] : 0,
2057: argc > 2 ? argv[4] : 0));
2058: }
2059: #endif
1.1 deraadt 2060:
2061: #if defined(unix) && defined(TN3270)
2062: static void
2063: filestuff(fd)
2064: int fd;
2065: {
2066: int res;
2067:
2068: #ifdef F_GETOWN
2069: setconnmode(0);
2070: res = fcntl(fd, F_GETOWN, 0);
2071: setcommandmode();
2072:
2073: if (res == -1) {
2074: perror("fcntl");
2075: return;
2076: }
1.10 art 2077: printf("\tOwner is %d.\r\n", res);
1.1 deraadt 2078: #endif
2079:
2080: setconnmode(0);
2081: res = fcntl(fd, F_GETFL, 0);
2082: setcommandmode();
2083:
2084: if (res == -1) {
2085: perror("fcntl");
2086: return;
2087: }
2088: #ifdef notdef
1.10 art 2089: printf("\tFlags are 0x%x: %s\r\n", res, decodeflags(res));
1.1 deraadt 2090: #endif
2091: }
2092: #endif /* defined(unix) && defined(TN3270) */
2093:
2094: /*
2095: * Print status about the connection.
2096: */
2097: /*ARGSUSED*/
1.15 art 2098: static int
1.1 deraadt 2099: status(argc, argv)
2100: int argc;
2101: char *argv[];
2102: {
2103: if (connected) {
1.10 art 2104: printf("Connected to %s.\r\n", hostname);
1.1 deraadt 2105: if ((argc < 2) || strcmp(argv[1], "notmuch")) {
2106: int mode = getconnmode();
2107:
2108: if (my_want_state_is_will(TELOPT_LINEMODE)) {
1.10 art 2109: printf("Operating with LINEMODE option\r\n");
2110: printf("%s line editing\r\n", (mode&MODE_EDIT) ? "Local" : "No");
2111: printf("%s catching of signals\r\n",
1.1 deraadt 2112: (mode&MODE_TRAPSIG) ? "Local" : "No");
2113: slcstate();
2114: #ifdef KLUDGELINEMODE
2115: } else if (kludgelinemode && my_want_state_is_dont(TELOPT_SGA)) {
1.10 art 2116: printf("Operating in obsolete linemode\r\n");
1.1 deraadt 2117: #endif
2118: } else {
1.10 art 2119: printf("Operating in single character mode\r\n");
1.1 deraadt 2120: if (localchars)
1.10 art 2121: printf("Catching signals locally\r\n");
1.1 deraadt 2122: }
1.10 art 2123: printf("%s character echo\r\n", (mode&MODE_ECHO) ? "Local" : "Remote");
1.1 deraadt 2124: if (my_want_state_is_will(TELOPT_LFLOW))
1.10 art 2125: printf("%s flow control\r\n", (mode&MODE_FLOW) ? "Local" : "No");
2126: #if defined(ENCRYPTION)
2127: encrypt_display();
2128: #endif
1.1 deraadt 2129: }
2130: } else {
1.10 art 2131: printf("No connection.\r\n");
1.1 deraadt 2132: }
2133: # if !defined(TN3270)
1.10 art 2134: printf("Escape character is '%s'.\r\n", control(escape));
1.1 deraadt 2135: (void) fflush(stdout);
2136: # else /* !defined(TN3270) */
2137: if ((!In3270) && ((argc < 2) || strcmp(argv[1], "notmuch"))) {
1.10 art 2138: printf("Escape character is '%s'.\r\n", control(escape));
1.1 deraadt 2139: }
2140: # if defined(unix)
2141: if ((argc >= 2) && !strcmp(argv[1], "everything")) {
1.10 art 2142: printf("SIGIO received %d time%s.\r\n",
1.1 deraadt 2143: sigiocount, (sigiocount == 1)? "":"s");
2144: if (In3270) {
1.42 mpech 2145: printf("Process ID %ld, process group %ld.\r\n",
2146: (long)getpid(), (long)getpgrp());
1.10 art 2147: printf("Terminal input:\r\n");
1.1 deraadt 2148: filestuff(tin);
1.10 art 2149: printf("Terminal output:\r\n");
1.1 deraadt 2150: filestuff(tout);
1.10 art 2151: printf("Network socket:\r\n");
1.1 deraadt 2152: filestuff(net);
2153: }
2154: }
2155: if (In3270 && transcom) {
1.10 art 2156: printf("Transparent mode command is '%s'.\r\n", transcom);
1.1 deraadt 2157: }
2158: # endif /* defined(unix) */
2159: (void) fflush(stdout);
2160: if (In3270) {
2161: return 0;
2162: }
2163: # endif /* defined(TN3270) */
1.10 art 2164: fflush(stdout);
1.1 deraadt 2165: return 1;
2166: }
2167:
2168: #ifdef SIGINFO
2169: /*
2170: * Function that gets called when SIGINFO is received.
2171: */
1.10 art 2172: void
1.1 deraadt 2173: ayt_status()
2174: {
2175: (void) call(status, "status", "notmuch", 0);
2176: }
2177: #endif
2178:
1.10 art 2179: static Command *getcmd(char *name);
2180:
2181: static void
2182: cmdrc(char *m1, char *m2)
2183: {
2184: static char rcname[128];
2185: Command *c;
2186: FILE *rcfile;
2187: int gotmachine = 0;
2188: int l1 = strlen(m1);
2189: int l2 = strlen(m2);
1.34 aaron 2190: char m1save[MAXHOSTNAMELEN];
1.10 art 2191:
2192: if (skiprc)
2193: return;
2194:
1.34 aaron 2195: strlcpy(m1save, m1, sizeof(m1save));
1.10 art 2196: m1 = m1save;
2197:
2198: if (rcname[0] == 0) {
2199: char *home = getenv("HOME");
2200:
1.29 millert 2201: if (home == NULL || *home == '\0')
2202: return;
1.10 art 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: {
1.23 itojun 2267: struct addrinfo hints, *res, *res0;
2268: int error;
1.1 deraadt 2269: struct sockaddr_in sin;
2270: unsigned long temp;
2271: extern char *inet_ntoa();
2272: #if defined(IP_OPTIONS) && defined(IPPROTO_IP)
1.10 art 2273: char *srp = 0;
2274: int srlen;
1.1 deraadt 2275: #endif
1.5 niklas 2276: char *cmd, *hostp = 0, *portp = 0, *user = 0, *aliasp = 0;
1.31 itojun 2277: int retry;
2278: #ifdef NI_WITHSCOPEID
2279: const int niflags = NI_NUMERICHOST | NI_WITHSCOPEID;
2280: #else
2281: const int niflags = NI_NUMERICHOST;
2282: #endif
1.1 deraadt 2283:
2284: /* clear the socket address prior to use */
1.3 niklas 2285: memset((char *)&sin, 0, sizeof(sin));
1.1 deraadt 2286:
2287: if (connected) {
1.10 art 2288: printf("?Already connected to %s\r\n", hostname);
1.1 deraadt 2289: return 0;
2290: }
2291: if (argc < 2) {
1.43 hin 2292: strlcpy(line, "open ", sizeof(line));
1.1 deraadt 2293: printf("(to) ");
2294: (void) fgets(&line[strlen(line)], sizeof(line) - strlen(line), stdin);
2295: makeargv();
2296: argc = margc;
2297: argv = margv;
2298: }
2299: cmd = *argv;
2300: --argc; ++argv;
2301: while (argc) {
1.3 niklas 2302: if (strcmp(*argv, "help") == 0 || isprefix(*argv, "?"))
1.1 deraadt 2303: goto usage;
2304: if (strcmp(*argv, "-l") == 0) {
2305: --argc; ++argv;
2306: if (argc == 0)
2307: goto usage;
1.14 art 2308: if ((user = strdup(*argv++)) == NULL)
2309: err(1, "strdup");
1.1 deraadt 2310: --argc;
2311: continue;
2312: }
1.5 niklas 2313: if (strcmp(*argv, "-b") == 0) {
2314: --argc; ++argv;
2315: if (argc == 0)
2316: goto usage;
2317: aliasp = *argv++;
2318: --argc;
2319: continue;
2320: }
1.1 deraadt 2321: if (strcmp(*argv, "-a") == 0) {
2322: --argc; ++argv;
2323: autologin = 1;
2324: continue;
2325: }
2326: if (hostp == 0) {
2327: hostp = *argv++;
2328: --argc;
2329: continue;
2330: }
2331: if (portp == 0) {
2332: portp = *argv++;
2333: --argc;
2334: continue;
2335: }
2336: usage:
1.10 art 2337: printf("usage: %s [-l user] [-a] host-name [port]\r\n", cmd);
1.1 deraadt 2338: return 0;
2339: }
2340: if (hostp == 0)
2341: goto usage;
2342:
2343: #if defined(IP_OPTIONS) && defined(IPPROTO_IP)
2344: if (hostp[0] == '@' || hostp[0] == '!') {
2345: if ((hostname = strrchr(hostp, ':')) == NULL)
2346: hostname = strrchr(hostp, '@');
2347: hostname++;
2348: srp = 0;
2349: temp = sourceroute(hostp, &srp, &srlen);
2350: if (temp == 0) {
2351: herror(srp);
2352: return 0;
2353: } else if (temp == -1) {
1.10 art 2354: printf("Bad source route option: %s\r\n", hostp);
1.1 deraadt 2355: return 0;
2356: } else {
1.10 art 2357: abort();
1.1 deraadt 2358: }
1.23 itojun 2359: } else
1.1 deraadt 2360: #endif
1.23 itojun 2361: {
2362: hostname = hostp;
2363: memset(&hints, 0, sizeof(hints));
1.46 otto 2364: hints.ai_family = family;
1.23 itojun 2365: hints.ai_socktype = SOCK_STREAM;
2366: hints.ai_flags = AI_CANONNAME;
2367: if (portp == NULL) {
2368: portp = "telnet";
1.38 itojun 2369: telnetport = 1;
1.23 itojun 2370: } else if (*portp == '-') {
2371: portp++;
2372: telnetport = 1;
1.38 itojun 2373: } else
2374: telnetport = 0;
1.28 millert 2375: h_errno = 0;
1.23 itojun 2376: error = getaddrinfo(hostp, portp, &hints, &res0);
2377: if (error) {
1.28 millert 2378: if (error == EAI_SERVICE)
2379: warnx("%s: bad port", portp);
2380: else
2381: warnx("%s: %s", hostp, gai_strerror(error));
2382: if (h_errno)
2383: herror(hostp);
1.23 itojun 2384: return 0;
2385: }
1.1 deraadt 2386: }
1.10 art 2387:
1.23 itojun 2388: net = -1;
2389: retry = 0;
2390: for (res = res0; res; res = res->ai_next) {
2391: if (1 /* retry */) {
1.31 itojun 2392: char hbuf[NI_MAXHOST];
1.23 itojun 2393:
1.31 itojun 2394: if (getnameinfo(res->ai_addr, res->ai_addrlen, hbuf, sizeof(hbuf),
2395: NULL, 0, niflags) != 0) {
1.43 hin 2396: strlcpy(hbuf, "(invalid)", sizeof(hbuf));
1.31 itojun 2397: }
1.23 itojun 2398: printf("Trying %s...\r\n", hbuf);
2399: }
2400: net = socket(res->ai_family, res->ai_socktype, res->ai_protocol);
2401: if (net < 0)
2402: continue;
1.10 art 2403:
1.5 niklas 2404: if (aliasp) {
1.23 itojun 2405: struct addrinfo ahints, *ares;
2406:
2407: memset(&ahints, 0, sizeof(ahints));
1.46 otto 2408: ahints.ai_family = family;
1.23 itojun 2409: ahints.ai_socktype = SOCK_STREAM;
2410: ahints.ai_flags = AI_PASSIVE;
2411: error = getaddrinfo(aliasp, "0", &ahints, &ares);
2412: if (error) {
2413: warn("%s: %s", aliasp, gai_strerror(error));
2414: close(net);
2415: continue;
1.5 niklas 2416: }
1.32 itojun 2417: if (bind(net, ares->ai_addr, ares->ai_addrlen) < 0) {
1.31 itojun 2418: perror(aliasp);
2419: (void) close(net); /* dump descriptor */
1.23 itojun 2420: freeaddrinfo(ares);
2421: continue;
1.5 niklas 2422: }
1.23 itojun 2423: freeaddrinfo(ares);
2424: }
2425: #if defined(IP_OPTIONS) && defined(IPPROTO_IP)
2426: if (srp && res->ai_family == AF_INET
2427: && setsockopt(net, IPPROTO_IP, IP_OPTIONS, (char *)srp, srlen) < 0)
1.1 deraadt 2428: perror("setsockopt (IP_OPTIONS)");
2429: #endif
2430: #if defined(IPPROTO_IP) && defined(IP_TOS)
1.23 itojun 2431: if (res->ai_family == AF_INET) {
1.1 deraadt 2432: # if defined(HAS_GETTOS)
2433: struct tosent *tp;
2434: if (tos < 0 && (tp = gettosbyname("telnet", "tcp")))
2435: tos = tp->t_tos;
2436: # endif
2437: if (tos < 0)
1.3 niklas 2438: tos = IPTOS_LOWDELAY; /* Low Delay bit */
1.1 deraadt 2439: if (tos
2440: && (setsockopt(net, IPPROTO_IP, IP_TOS,
1.10 art 2441: (void *)&tos, sizeof(int)) < 0)
1.1 deraadt 2442: && (errno != ENOPROTOOPT))
2443: perror("telnet: setsockopt (IP_TOS) (ignored)");
2444: }
2445: #endif /* defined(IPPROTO_IP) && defined(IP_TOS) */
2446:
2447: if (debug && SetSockOpt(net, SOL_SOCKET, SO_DEBUG, 1) < 0) {
2448: perror("setsockopt (SO_DEBUG)");
2449: }
2450:
1.23 itojun 2451: if (connect(net, res->ai_addr, res->ai_addrlen) < 0) {
1.31 itojun 2452: char hbuf[NI_MAXHOST];
1.16 deraadt 2453:
1.31 itojun 2454: if (getnameinfo(res->ai_addr, res->ai_addrlen, hbuf, sizeof(hbuf),
2455: NULL, 0, niflags) != 0) {
1.43 hin 2456: strlcpy(hbuf, "(invalid)", sizeof(hbuf));
1.31 itojun 2457: }
1.25 itojun 2458: fprintf(stderr, "telnet: connect to address %s: %s\n", hbuf,
2459: strerror(errno));
1.23 itojun 2460:
2461: close(net);
2462: net = -1;
2463: retry++;
2464: continue;
1.1 deraadt 2465: }
1.23 itojun 2466:
1.1 deraadt 2467: connected++;
1.10 art 2468: #if defined(AUTHENTICATION) || defined(ENCRYPTION)
1.1 deraadt 2469: auth_encrypt_connect(connected);
2470: #endif /* defined(AUTHENTICATION) */
1.23 itojun 2471: break;
2472: }
2473: freeaddrinfo(res0);
2474: if (net < 0) {
2475: return 0;
2476: }
1.1 deraadt 2477: cmdrc(hostp, hostname);
2478: if (autologin && user == NULL) {
2479: struct passwd *pw;
2480:
2481: user = getenv("USER");
2482: if (user == NULL ||
1.15 art 2483: ((pw = getpwnam(user)) && pw->pw_uid != getuid())) {
2484: if ((pw = getpwuid(getuid())) != NULL)
1.1 deraadt 2485: user = pw->pw_name;
2486: else
2487: user = NULL;
2488: }
2489: }
2490: if (user) {
2491: env_define((unsigned char *)"USER", (unsigned char *)user);
2492: env_export((unsigned char *)"USER");
2493: }
2494: (void) call(status, "status", "notmuch", 0);
2495: if (setjmp(peerdied) == 0)
2496: telnet(user);
2497: (void) NetClose(net);
1.10 art 2498: ExitString("Connection closed by foreign host.\r\n",1);
1.1 deraadt 2499: /*NOTREACHED*/
1.10 art 2500: return 0;
1.1 deraadt 2501: }
2502:
2503: #define HELPINDENT (sizeof ("connect"))
2504:
2505: static char
2506: openhelp[] = "connect to a site",
2507: closehelp[] = "close current connection",
2508: logouthelp[] = "forcibly logout remote user and close the connection",
2509: quithelp[] = "exit telnet",
2510: statushelp[] = "print status information",
2511: helphelp[] = "print help information",
2512: sendhelp[] = "transmit special characters ('send ?' for more)",
2513: sethelp[] = "set operating parameters ('set ?' for more)",
2514: unsethelp[] = "unset operating parameters ('unset ?' for more)",
2515: togglestring[] ="toggle operating parameters ('toggle ?' for more)",
2516: slchelp[] = "change state of special charaters ('slc ?' for more)",
2517: displayhelp[] = "display operating parameters",
2518: #if defined(TN3270) && defined(unix)
2519: transcomhelp[] = "specify Unix command for transparent mode pipe",
2520: #endif /* defined(TN3270) && defined(unix) */
2521: #if defined(AUTHENTICATION)
2522: authhelp[] = "turn on (off) authentication ('auth ?' for more)",
2523: #endif
1.10 art 2524: #if defined(ENCRYPTION)
2525: encrypthelp[] = "turn on (off) encryption ('encrypt ?' for more)",
2526: #endif
1.1 deraadt 2527: zhelp[] = "suspend telnet",
1.21 deraadt 2528: #ifdef SKEY
2529: skeyhelp[] = "compute response to s/key challenge",
2530: #endif
1.1 deraadt 2531: shellhelp[] = "invoke a subshell",
2532: envhelp[] = "change environment variables ('environ ?' for more)",
2533: modestring[] = "try to enter line or character mode ('mode ?' for more)";
2534:
1.40 millert 2535: static int help(int, char**);
1.1 deraadt 2536:
2537: static Command cmdtab[] = {
2538: { "close", closehelp, bye, 1 },
2539: { "logout", logouthelp, logout, 1 },
2540: { "display", displayhelp, display, 0 },
2541: { "mode", modestring, modecmd, 0 },
2542: { "open", openhelp, tn, 0 },
2543: { "quit", quithelp, quit, 0 },
2544: { "send", sendhelp, sendcmd, 0 },
2545: { "set", sethelp, setcmd, 0 },
2546: { "unset", unsethelp, unsetcmd, 0 },
2547: { "status", statushelp, status, 0 },
2548: { "toggle", togglestring, toggle, 0 },
2549: { "slc", slchelp, slccmd, 0 },
2550: #if defined(TN3270) && defined(unix)
2551: { "transcom", transcomhelp, settranscom, 0 },
2552: #endif /* defined(TN3270) && defined(unix) */
2553: #if defined(AUTHENTICATION)
2554: { "auth", authhelp, auth_cmd, 0 },
2555: #endif
1.10 art 2556: #if defined(ENCRYPTION)
2557: { "encrypt", encrypthelp, encrypt_cmd, 0 },
2558: #endif
2559:
2560: { "z", zhelp, telnetsuspend, 0 },
1.1 deraadt 2561: #if defined(TN3270)
2562: { "!", shellhelp, shell, 1 },
2563: #else
2564: { "!", shellhelp, shell, 0 },
2565: #endif
2566: { "environ", envhelp, env_cmd, 0 },
2567: { "?", helphelp, help, 0 },
1.6 deraadt 2568: #if defined(SKEY)
1.21 deraadt 2569: { "skey", skeyhelp, skey_calc, 0 },
1.6 deraadt 2570: #endif
1.10 art 2571: { 0, 0, 0, 0 }
1.1 deraadt 2572: };
2573:
2574: static char crmodhelp[] = "deprecated command -- use 'toggle crmod' instead";
2575: static char escapehelp[] = "deprecated command -- use 'set escape' instead";
2576:
2577: static Command cmdtab2[] = {
2578: { "help", 0, help, 0 },
2579: { "escape", escapehelp, setescape, 0 },
2580: { "crmod", crmodhelp, togcrmod, 0 },
1.10 art 2581: { 0, 0, 0, 0 }
1.1 deraadt 2582: };
2583:
2584:
2585: /*
2586: * Call routine with argc, argv set from args (terminated by 0).
2587: */
2588:
2589: /*VARARGS1*/
1.10 art 2590: static int
2591: call(intrtn_t routine, ...)
1.1 deraadt 2592: {
2593: va_list ap;
2594: char *args[100];
2595: int argno = 0;
2596:
1.10 art 2597: va_start(ap, routine);
2598: while ((args[argno++] = va_arg(ap, char *)) != 0);
1.1 deraadt 2599: va_end(ap);
2600: return (*routine)(argno-1, args);
2601: }
2602:
2603:
2604: static Command *
2605: getcmd(name)
2606: char *name;
2607: {
2608: Command *cm;
2609:
1.10 art 2610: if ((cm = (Command *) genget(name, (char **) cmdtab, sizeof(Command))))
1.1 deraadt 2611: return cm;
2612: return (Command *) genget(name, (char **) cmdtab2, sizeof(Command));
2613: }
2614:
2615: void
2616: command(top, tbuf, cnt)
2617: int top;
2618: char *tbuf;
2619: int cnt;
2620: {
1.39 mpech 2621: Command *c;
1.1 deraadt 2622:
2623: setcommandmode();
2624: if (!top) {
2625: putchar('\n');
2626: #if defined(unix)
2627: } else {
2628: (void) signal(SIGINT, SIG_DFL);
2629: (void) signal(SIGQUIT, SIG_DFL);
2630: #endif /* defined(unix) */
2631: }
2632: for (;;) {
2633: if (rlogin == _POSIX_VDISABLE)
2634: printf("%s> ", prompt);
2635: if (tbuf) {
1.39 mpech 2636: char *cp;
1.1 deraadt 2637: cp = line;
2638: while (cnt > 0 && (*cp++ = *tbuf++) != '\n')
2639: cnt--;
2640: tbuf = 0;
2641: if (cp == line || *--cp != '\n' || cp == line)
2642: goto getline;
2643: *cp = '\0';
2644: if (rlogin == _POSIX_VDISABLE)
1.10 art 2645: printf("%s\r\n", line);
1.1 deraadt 2646: } else {
2647: getline:
2648: if (rlogin != _POSIX_VDISABLE)
2649: printf("%s> ", prompt);
2650: if (fgets(line, sizeof(line), stdin) == NULL) {
2651: if (feof(stdin) || ferror(stdin)) {
2652: (void) quit();
2653: /*NOTREACHED*/
2654: }
2655: break;
2656: }
2657: }
2658: if (line[0] == 0)
2659: break;
2660: makeargv();
2661: if (margv[0] == 0) {
2662: break;
2663: }
2664: c = getcmd(margv[0]);
2665: if (Ambiguous(c)) {
1.10 art 2666: printf("?Ambiguous command\r\n");
1.1 deraadt 2667: continue;
2668: }
2669: if (c == 0) {
1.10 art 2670: printf("?Invalid command\r\n");
1.1 deraadt 2671: continue;
2672: }
2673: if (c->needconnect && !connected) {
1.10 art 2674: printf("?Need to be connected first.\r\n");
1.1 deraadt 2675: continue;
2676: }
2677: if ((*c->handler)(margc, margv)) {
2678: break;
2679: }
2680: }
2681: if (!top) {
2682: if (!connected) {
2683: longjmp(toplevel, 1);
2684: /*NOTREACHED*/
2685: }
2686: #if defined(TN3270)
2687: if (shell_active == 0) {
2688: setconnmode(0);
2689: }
2690: #else /* defined(TN3270) */
2691: setconnmode(0);
2692: #endif /* defined(TN3270) */
2693: }
2694: }
2695:
2696: /*
2697: * Help command.
2698: */
1.15 art 2699: static int
1.1 deraadt 2700: help(argc, argv)
2701: int argc;
2702: char *argv[];
2703: {
1.39 mpech 2704: Command *c;
1.1 deraadt 2705:
2706: if (argc == 1) {
1.10 art 2707: printf("Commands may be abbreviated. Commands are:\r\n\r\n");
1.1 deraadt 2708: for (c = cmdtab; c->name; c++)
2709: if (c->help) {
1.37 deraadt 2710: printf("%-*s\t%s\r\n", (int)HELPINDENT, c->name,
1.1 deraadt 2711: c->help);
2712: }
2713: return 0;
2714: }
2715: while (--argc > 0) {
1.39 mpech 2716: char *arg;
1.1 deraadt 2717: arg = *++argv;
2718: c = getcmd(arg);
2719: if (Ambiguous(c))
1.10 art 2720: printf("?Ambiguous help command %s\r\n", arg);
1.1 deraadt 2721: else if (c == (Command *)0)
1.10 art 2722: printf("?Invalid help command %s\r\n", arg);
1.1 deraadt 2723: else
1.10 art 2724: printf("%s\r\n", c->help);
1.1 deraadt 2725: }
2726: return 0;
2727: }
2728:
2729: #if defined(IP_OPTIONS) && defined(IPPROTO_IP)
2730:
2731: /*
2732: * Source route is handed in as
2733: * [!]@hop1@hop2...[@|:]dst
2734: * If the leading ! is present, it is a
2735: * strict source route, otherwise it is
2736: * assmed to be a loose source route.
2737: *
2738: * We fill in the source route option as
2739: * hop1,hop2,hop3...dest
2740: * and return a pointer to hop1, which will
2741: * be the address to connect() to.
2742: *
2743: * Arguments:
2744: * arg: pointer to route list to decipher
2745: *
2746: * cpp: If *cpp is not equal to NULL, this is a
2747: * pointer to a pointer to a character array
2748: * that should be filled in with the option.
2749: *
2750: * lenp: pointer to an integer that contains the
2751: * length of *cpp if *cpp != NULL.
2752: *
2753: * Return values:
2754: *
2755: * Returns the address of the host to connect to. If the
2756: * return value is -1, there was a syntax error in the
2757: * option, either unknown characters, or too many hosts.
2758: * If the return value is 0, one of the hostnames in the
2759: * path is unknown, and *cpp is set to point to the bad
2760: * hostname.
2761: *
2762: * *cpp: If *cpp was equal to NULL, it will be filled
2763: * in with a pointer to our static area that has
2764: * the option filled in. This will be 32bit aligned.
1.3 niklas 2765: *
1.1 deraadt 2766: * *lenp: This will be filled in with how long the option
2767: * pointed to by *cpp is.
1.3 niklas 2768: *
1.1 deraadt 2769: */
2770: unsigned long
2771: sourceroute(arg, cpp, lenp)
2772: char *arg;
2773: char **cpp;
2774: int *lenp;
2775: {
2776: static char lsr[44];
2777: #ifdef sysV88
2778: static IOPTN ipopt;
2779: #endif
2780: char *cp, *cp2, *lsrp, *lsrep;
1.39 mpech 2781: int tmp;
1.1 deraadt 2782: struct in_addr sin_addr;
1.39 mpech 2783: struct hostent *host = 0;
2784: char c;
1.1 deraadt 2785:
2786: /*
2787: * Verify the arguments, and make sure we have
2788: * at least 7 bytes for the option.
2789: */
2790: if (cpp == NULL || lenp == NULL)
2791: return((unsigned long)-1);
2792: if (*cpp != NULL && *lenp < 7)
2793: return((unsigned long)-1);
2794: /*
2795: * Decide whether we have a buffer passed to us,
2796: * or if we need to use our own static buffer.
2797: */
2798: if (*cpp) {
2799: lsrp = *cpp;
2800: lsrep = lsrp + *lenp;
2801: } else {
2802: *cpp = lsrp = lsr;
2803: lsrep = lsrp + 44;
2804: }
2805:
2806: cp = arg;
2807:
2808: /*
2809: * Next, decide whether we have a loose source
2810: * route or a strict source route, and fill in
2811: * the begining of the option.
2812: */
2813: #ifndef sysV88
2814: if (*cp == '!') {
2815: cp++;
2816: *lsrp++ = IPOPT_SSRR;
2817: } else
2818: *lsrp++ = IPOPT_LSRR;
2819: #else
2820: if (*cp == '!') {
2821: cp++;
2822: ipopt.io_type = IPOPT_SSRR;
2823: } else
2824: ipopt.io_type = IPOPT_LSRR;
2825: #endif
2826:
2827: if (*cp != '@')
2828: return((unsigned long)-1);
2829:
2830: #ifndef sysV88
2831: lsrp++; /* skip over length, we'll fill it in later */
2832: *lsrp++ = 4;
2833: #endif
2834:
2835: cp++;
2836:
2837: sin_addr.s_addr = 0;
2838:
2839: for (c = 0;;) {
2840: if (c == ':')
2841: cp2 = 0;
1.10 art 2842: else for (cp2 = cp; (c = *cp2); cp2++) {
1.1 deraadt 2843: if (c == ',') {
2844: *cp2++ = '\0';
2845: if (*cp2 == '@')
2846: cp2++;
2847: } else if (c == '@') {
2848: *cp2++ = '\0';
2849: } else if (c == ':') {
2850: *cp2++ = '\0';
2851: } else
2852: continue;
2853: break;
2854: }
2855: if (!c)
2856: cp2 = 0;
2857:
1.10 art 2858: if ((tmp = inet_addr(cp)) != -1) {
1.1 deraadt 2859: sin_addr.s_addr = tmp;
1.10 art 2860: } else if ((host = gethostbyname(cp))) {
1.1 deraadt 2861: #if defined(h_addr)
1.3 niklas 2862: memmove((caddr_t)&sin_addr,
1.10 art 2863: host->h_addr_list[0],
2864: sizeof(sin_addr));
1.1 deraadt 2865: #else
1.10 art 2866: memmove((caddr_t)&sin_addr, host->h_addr,
2867: sizeof(sin_addr));
1.1 deraadt 2868: #endif
2869: } else {
2870: *cpp = cp;
2871: return(0);
2872: }
1.3 niklas 2873: memmove(lsrp, (char *)&sin_addr, 4);
1.1 deraadt 2874: lsrp += 4;
2875: if (cp2)
2876: cp = cp2;
2877: else
2878: break;
2879: /*
2880: * Check to make sure there is space for next address
2881: */
2882: if (lsrp + 4 > lsrep)
2883: return((unsigned long)-1);
2884: }
2885: #ifndef sysV88
2886: if ((*(*cpp+IPOPT_OLEN) = lsrp - *cpp) <= 7) {
2887: *cpp = 0;
2888: *lenp = 0;
2889: return((unsigned long)-1);
2890: }
2891: *lsrp++ = IPOPT_NOP; /* 32 bit word align it */
2892: *lenp = lsrp - *cpp;
2893: #else
2894: ipopt.io_len = lsrp - *cpp;
2895: if (ipopt.io_len <= 5) { /* Is 3 better ? */
2896: *cpp = 0;
2897: *lenp = 0;
2898: return((unsigned long)-1);
2899: }
2900: *lenp = sizeof(ipopt);
2901: *cpp = (char *) &ipopt;
2902: #endif
2903: return(sin_addr.s_addr);
2904: }
2905: #endif
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