Annotation of src/usr.bin/telnet/commands.c, Revision 1.54
1.54 ! phessler 1: /* $OpenBSD: commands.c,v 1.53 2011/06/21 17:31:07 mikeb 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:
1.10 art 42: typedef int (*intrtn_t)(int, char**);
1.40 millert 43: static int call(intrtn_t, ...);
1.1 deraadt 44:
45: typedef struct {
46: char *name; /* command name */
47: char *help; /* help string (NULL for no help) */
48: int (*handler)(); /* routine which executes command */
49: int needconnect; /* Do we need to be connected to execute? */
50: } Command;
51:
52: static char line[256];
53: static char saveline[256];
54: static int margc;
55: static char *margv[20];
56:
1.6 deraadt 57: #if defined(SKEY)
58: #include <sys/wait.h>
59: #define PATH_SKEY "/usr/bin/skey"
60: int
61: skey_calc(argc, argv)
62: int argc;
63: char **argv;
64: {
65: int status;
66:
67: if(argc != 3) {
1.21 deraadt 68: printf("usage: %s sequence challenge\n", argv[0]);
1.15 art 69: return 0;
1.6 deraadt 70: }
71:
72: switch(fork()) {
73: case 0:
74: execv(PATH_SKEY, argv);
75: exit (1);
76: case -1:
1.15 art 77: err(1, "fork");
1.6 deraadt 78: break;
79: default:
80: (void) wait(&status);
81: if (WIFEXITED(status))
82: return (WEXITSTATUS(status));
83: return (0);
84: }
85: }
86: #endif
87:
88:
89:
1.1 deraadt 90: static void
91: makeargv()
92: {
1.39 mpech 93: char *cp, *cp2, c;
94: char **argp = margv;
1.1 deraadt 95:
96: margc = 0;
97: cp = line;
98: if (*cp == '!') { /* Special case shell escape */
1.43 hin 99: strlcpy(saveline, line, sizeof(saveline)); /* save for shell command */
1.1 deraadt 100: *argp++ = "!"; /* No room in string to get this */
101: margc++;
102: cp++;
103: }
1.10 art 104: while ((c = *cp)) {
1.39 mpech 105: int inquote = 0;
1.1 deraadt 106: while (isspace(c))
107: c = *++cp;
108: if (c == '\0')
109: break;
110: *argp++ = cp;
111: margc += 1;
112: for (cp2 = cp; c != '\0'; c = *++cp) {
113: if (inquote) {
114: if (c == inquote) {
115: inquote = 0;
116: continue;
117: }
118: } else {
119: if (c == '\\') {
120: if ((c = *++cp) == '\0')
121: break;
122: } else if (c == '"') {
123: inquote = '"';
124: continue;
125: } else if (c == '\'') {
126: inquote = '\'';
127: continue;
128: } else if (isspace(c))
129: break;
130: }
131: *cp2++ = c;
132: }
133: *cp2 = '\0';
134: if (c == '\0')
135: break;
136: cp++;
137: }
138: *argp++ = 0;
139: }
140:
141: /*
142: * Make a character string into a number.
143: *
144: * Todo: 1. Could take random integers (12, 0x12, 012, 0b1).
145: */
146:
1.15 art 147: static char
1.1 deraadt 148: special(s)
1.39 mpech 149: char *s;
1.1 deraadt 150: {
1.39 mpech 151: char c;
1.1 deraadt 152: char b;
153:
154: switch (*s) {
155: case '^':
156: b = *++s;
157: if (b == '?') {
158: c = b | 0x40; /* DEL */
159: } else {
160: c = b & 0x1f;
161: }
162: break;
163: default:
164: c = *s;
165: break;
166: }
167: return c;
168: }
169:
170: /*
171: * Construct a control character sequence
172: * for a special character.
173: */
174: static char *
175: control(c)
1.39 mpech 176: cc_t c;
1.1 deraadt 177: {
178: static char buf[5];
179: /*
180: * The only way I could get the Sun 3.5 compiler
181: * to shut up about
182: * if ((unsigned int)c >= 0x80)
183: * was to assign "c" to an unsigned int variable...
184: * Arggg....
185: */
1.39 mpech 186: unsigned int uic = (unsigned int)c;
1.1 deraadt 187:
188: if (uic == 0x7f)
189: return ("^?");
190: if (c == (cc_t)_POSIX_VDISABLE) {
191: return "off";
192: }
193: if (uic >= 0x80) {
194: buf[0] = '\\';
195: buf[1] = ((c>>6)&07) + '0';
196: buf[2] = ((c>>3)&07) + '0';
197: buf[3] = (c&07) + '0';
198: buf[4] = 0;
199: } else if (uic >= 0x20) {
200: buf[0] = c;
201: buf[1] = 0;
202: } else {
203: buf[0] = '^';
204: buf[1] = '@'+c;
205: buf[2] = 0;
206: }
207: return (buf);
208: }
209:
210:
211:
212: /*
213: * The following are data structures and routines for
214: * the "send" command.
215: *
216: */
1.3 niklas 217:
1.1 deraadt 218: struct sendlist {
219: char *name; /* How user refers to it (case independent) */
220: char *help; /* Help information (0 ==> no help) */
221: int needconnect; /* Need to be connected */
222: int narg; /* Number of arguments */
223: int (*handler)(); /* Routine to perform (for special ops) */
224: int nbyte; /* Number of bytes to send this command */
225: int what; /* Character to be sent (<0 ==> special) */
226: };
227:
228:
229: static int
1.41 millert 230: send_esc(void),
231: send_help(void),
232: send_docmd(char *),
233: send_dontcmd(char *),
234: send_willcmd(char *),
235: send_wontcmd(char *);
1.1 deraadt 236:
237: static struct sendlist Sendlist[] = {
238: { "ao", "Send Telnet Abort output", 1, 0, 0, 2, AO },
239: { "ayt", "Send Telnet 'Are You There'", 1, 0, 0, 2, AYT },
240: { "brk", "Send Telnet Break", 1, 0, 0, 2, BREAK },
241: { "break", 0, 1, 0, 0, 2, BREAK },
242: { "ec", "Send Telnet Erase Character", 1, 0, 0, 2, EC },
243: { "el", "Send Telnet Erase Line", 1, 0, 0, 2, EL },
244: { "escape", "Send current escape character", 1, 0, send_esc, 1, 0 },
245: { "ga", "Send Telnet 'Go Ahead' sequence", 1, 0, 0, 2, GA },
246: { "ip", "Send Telnet Interrupt Process", 1, 0, 0, 2, IP },
247: { "intp", 0, 1, 0, 0, 2, IP },
248: { "interrupt", 0, 1, 0, 0, 2, IP },
249: { "intr", 0, 1, 0, 0, 2, IP },
250: { "nop", "Send Telnet 'No operation'", 1, 0, 0, 2, NOP },
251: { "eor", "Send Telnet 'End of Record'", 1, 0, 0, 2, EOR },
252: { "abort", "Send Telnet 'Abort Process'", 1, 0, 0, 2, ABORT },
253: { "susp", "Send Telnet 'Suspend Process'", 1, 0, 0, 2, SUSP },
254: { "eof", "Send Telnet End of File Character", 1, 0, 0, 2, xEOF },
255: { "synch", "Perform Telnet 'Synch operation'", 1, 0, dosynch, 2, 0 },
256: { "getstatus", "Send request for STATUS", 1, 0, get_status, 6, 0 },
257: { "?", "Display send options", 0, 0, send_help, 0, 0 },
258: { "help", 0, 0, 0, send_help, 0, 0 },
259: { "do", 0, 0, 1, send_docmd, 3, 0 },
260: { "dont", 0, 0, 1, send_dontcmd, 3, 0 },
261: { "will", 0, 0, 1, send_willcmd, 3, 0 },
262: { "wont", 0, 0, 1, send_wontcmd, 3, 0 },
263: { 0 }
264: };
265:
266: #define GETSEND(name) ((struct sendlist *) genget(name, (char **) Sendlist, \
267: sizeof(struct sendlist)))
268:
269: static int
270: sendcmd(argc, argv)
271: int argc;
272: char **argv;
273: {
274: int count; /* how many bytes we are going to need to send */
275: int i;
276: struct sendlist *s; /* pointer to current command */
277: int success = 0;
278: int needconnect = 0;
279:
280: if (argc < 2) {
1.10 art 281: printf("need at least one argument for 'send' command\r\n");
282: printf("'send ?' for help\r\n");
1.1 deraadt 283: return 0;
284: }
285: /*
286: * First, validate all the send arguments.
287: * In addition, we see how much space we are going to need, and
288: * whether or not we will be doing a "SYNCH" operation (which
289: * flushes the network queue).
290: */
291: count = 0;
292: for (i = 1; i < argc; i++) {
293: s = GETSEND(argv[i]);
294: if (s == 0) {
1.10 art 295: printf("Unknown send argument '%s'\r\n'send ?' for help.\r\n",
1.1 deraadt 296: argv[i]);
297: return 0;
298: } else if (Ambiguous(s)) {
1.10 art 299: printf("Ambiguous send argument '%s'\r\n'send ?' for help.\r\n",
1.1 deraadt 300: argv[i]);
301: return 0;
302: }
303: if (i + s->narg >= argc) {
304: fprintf(stderr,
1.10 art 305: "Need %d argument%s to 'send %s' command. 'send %s ?' for help.\r\n",
1.1 deraadt 306: s->narg, s->narg == 1 ? "" : "s", s->name, s->name);
307: return 0;
308: }
309: count += s->nbyte;
310: if (s->handler == send_help) {
311: send_help();
312: return 0;
313: }
314:
315: i += s->narg;
316: needconnect += s->needconnect;
317: }
318: if (!connected && needconnect) {
1.10 art 319: printf("?Need to be connected first.\r\n");
320: printf("'send ?' for help\r\n");
1.1 deraadt 321: return 0;
322: }
323: /* Now, do we have enough room? */
324: if (NETROOM() < count) {
1.10 art 325: printf("There is not enough room in the buffer TO the network\r\n");
326: printf("to process your request. Nothing will be done.\r\n");
327: printf("('send synch' will throw away most data in the network\r\n");
328: printf("buffer, if this might help.)\r\n");
1.1 deraadt 329: return 0;
330: }
331: /* OK, they are all OK, now go through again and actually send */
332: count = 0;
333: for (i = 1; i < argc; i++) {
334: if ((s = GETSEND(argv[i])) == 0) {
1.10 art 335: fprintf(stderr, "Telnet 'send' error - argument disappeared!\r\n");
1.1 deraadt 336: (void) quit();
337: /*NOTREACHED*/
338: }
339: if (s->handler) {
340: count++;
341: success += (*s->handler)((s->narg > 0) ? argv[i+1] : 0,
342: (s->narg > 1) ? argv[i+2] : 0);
343: i += s->narg;
344: } else {
345: NET2ADD(IAC, s->what);
346: printoption("SENT", IAC, s->what);
347: }
348: }
349: return (count == success);
350: }
351:
1.10 art 352: static int
353: send_tncmd(void (*func)(), char *cmd, char *name);
354:
1.1 deraadt 355: static int
356: send_esc()
357: {
358: NETADD(escape);
359: return 1;
360: }
361:
362: static int
363: send_docmd(name)
364: char *name;
365: {
366: return(send_tncmd(send_do, "do", name));
367: }
368:
369: static int
370: send_dontcmd(name)
371: char *name;
372: {
373: return(send_tncmd(send_dont, "dont", name));
374: }
375: static int
376: send_willcmd(name)
377: char *name;
378: {
379: return(send_tncmd(send_will, "will", name));
380: }
381: static int
382: send_wontcmd(name)
383: char *name;
384: {
385: return(send_tncmd(send_wont, "wont", name));
386: }
387:
388: int
389: send_tncmd(func, cmd, name)
390: void (*func)();
391: char *cmd, *name;
392: {
393: char **cpp;
394: extern char *telopts[];
1.39 mpech 395: int val = 0;
1.1 deraadt 396:
1.10 art 397: if (isprefix(name, "help") || isprefix(name, "?")) {
1.39 mpech 398: int col, len;
1.1 deraadt 399:
1.10 art 400: printf("Usage: send %s <value|option>\r\n", cmd);
401: printf("\"value\" must be from 0 to 255\r\n");
402: printf("Valid options are:\r\n\t");
1.1 deraadt 403:
404: col = 8;
405: for (cpp = telopts; *cpp; cpp++) {
406: len = strlen(*cpp) + 3;
407: if (col + len > 65) {
1.10 art 408: printf("\r\n\t");
1.1 deraadt 409: col = 8;
410: }
411: printf(" \"%s\"", *cpp);
412: col += len;
413: }
1.10 art 414: printf("\r\n");
1.1 deraadt 415: return 0;
416: }
417: cpp = (char **)genget(name, telopts, sizeof(char *));
418: if (Ambiguous(cpp)) {
1.10 art 419: fprintf(stderr,"'%s': ambiguous argument ('send %s ?' for help).\r\n",
1.1 deraadt 420: name, cmd);
421: return 0;
422: }
423: if (cpp) {
424: val = cpp - telopts;
425: } else {
1.39 mpech 426: char *cp = name;
1.1 deraadt 427:
428: while (*cp >= '0' && *cp <= '9') {
429: val *= 10;
430: val += *cp - '0';
431: cp++;
432: }
433: if (*cp != 0) {
1.10 art 434: fprintf(stderr, "'%s': unknown argument ('send %s ?' for help).\r\n",
1.1 deraadt 435: name, cmd);
436: return 0;
437: } else if (val < 0 || val > 255) {
1.10 art 438: fprintf(stderr, "'%s': bad value ('send %s ?' for help).\r\n",
1.1 deraadt 439: name, cmd);
440: return 0;
441: }
442: }
443: if (!connected) {
1.10 art 444: printf("?Need to be connected first.\r\n");
1.1 deraadt 445: return 0;
446: }
447: (*func)(val, 1);
448: return 1;
449: }
450:
451: static int
452: send_help()
453: {
454: struct sendlist *s; /* pointer to current command */
455: for (s = Sendlist; s->name; s++) {
456: if (s->help)
1.10 art 457: printf("%-15s %s\r\n", s->name, s->help);
1.1 deraadt 458: }
459: return(0);
460: }
461:
462: /*
463: * The following are the routines and data structures referred
464: * to by the arguments to the "toggle" command.
465: */
466:
467: static int
468: lclchars()
469: {
470: donelclchars = 1;
471: return 1;
472: }
473:
474: static int
475: togdebug()
476: {
477: #ifndef NOT43
478: if (net > 0 &&
479: (SetSockOpt(net, SOL_SOCKET, SO_DEBUG, debug)) < 0) {
480: perror("setsockopt (SO_DEBUG)");
481: }
482: #else /* NOT43 */
483: if (debug) {
1.10 art 484: if (net > 0 && SetSockOpt(net, SOL_SOCKET, SO_DEBUG, 0, 0) < 0)
1.1 deraadt 485: perror("setsockopt (SO_DEBUG)");
486: } else
1.10 art 487: printf("Cannot turn off socket debugging\r\n");
1.1 deraadt 488: #endif /* NOT43 */
489: return 1;
490: }
491:
492:
493: static int
494: togcrlf()
495: {
496: if (crlf) {
1.10 art 497: printf("Will send carriage returns as telnet <CR><LF>.\r\n");
1.1 deraadt 498: } else {
1.10 art 499: printf("Will send carriage returns as telnet <CR><NUL>.\r\n");
1.1 deraadt 500: }
501: return 1;
502: }
503:
504: int binmode;
505:
506: static int
507: togbinary(val)
508: int val;
509: {
510: donebinarytoggle = 1;
511:
512: if (val >= 0) {
513: binmode = val;
514: } else {
515: if (my_want_state_is_will(TELOPT_BINARY) &&
516: my_want_state_is_do(TELOPT_BINARY)) {
517: binmode = 1;
518: } else if (my_want_state_is_wont(TELOPT_BINARY) &&
519: my_want_state_is_dont(TELOPT_BINARY)) {
520: binmode = 0;
521: }
522: val = binmode ? 0 : 1;
523: }
524:
525: if (val == 1) {
526: if (my_want_state_is_will(TELOPT_BINARY) &&
527: my_want_state_is_do(TELOPT_BINARY)) {
1.10 art 528: printf("Already operating in binary mode with remote host.\r\n");
1.1 deraadt 529: } else {
1.10 art 530: printf("Negotiating binary mode with remote host.\r\n");
1.1 deraadt 531: tel_enter_binary(3);
532: }
533: } else {
534: if (my_want_state_is_wont(TELOPT_BINARY) &&
535: my_want_state_is_dont(TELOPT_BINARY)) {
1.10 art 536: printf("Already in network ascii mode with remote host.\r\n");
1.1 deraadt 537: } else {
1.10 art 538: printf("Negotiating network ascii mode with remote host.\r\n");
1.1 deraadt 539: tel_leave_binary(3);
540: }
541: }
542: return 1;
543: }
544:
545: static int
546: togrbinary(val)
547: int val;
548: {
549: donebinarytoggle = 1;
550:
551: if (val == -1)
552: val = my_want_state_is_do(TELOPT_BINARY) ? 0 : 1;
553:
554: if (val == 1) {
555: if (my_want_state_is_do(TELOPT_BINARY)) {
1.10 art 556: printf("Already receiving in binary mode.\r\n");
1.1 deraadt 557: } else {
1.10 art 558: printf("Negotiating binary mode on input.\r\n");
1.1 deraadt 559: tel_enter_binary(1);
560: }
561: } else {
562: if (my_want_state_is_dont(TELOPT_BINARY)) {
1.10 art 563: printf("Already receiving in network ascii mode.\r\n");
1.1 deraadt 564: } else {
1.10 art 565: printf("Negotiating network ascii mode on input.\r\n");
1.1 deraadt 566: tel_leave_binary(1);
567: }
568: }
569: return 1;
570: }
571:
572: static int
573: togxbinary(val)
574: int val;
575: {
576: donebinarytoggle = 1;
577:
578: if (val == -1)
579: val = my_want_state_is_will(TELOPT_BINARY) ? 0 : 1;
580:
581: if (val == 1) {
582: if (my_want_state_is_will(TELOPT_BINARY)) {
1.10 art 583: printf("Already transmitting in binary mode.\r\n");
1.1 deraadt 584: } else {
1.10 art 585: printf("Negotiating binary mode on output.\r\n");
1.1 deraadt 586: tel_enter_binary(2);
587: }
588: } else {
589: if (my_want_state_is_wont(TELOPT_BINARY)) {
1.10 art 590: printf("Already transmitting in network ascii mode.\r\n");
1.1 deraadt 591: } else {
1.10 art 592: printf("Negotiating network ascii mode on output.\r\n");
1.1 deraadt 593: tel_leave_binary(2);
594: }
595: }
596: return 1;
597: }
598:
599:
1.41 millert 600: static int togglehelp(void);
1.1 deraadt 601: #if defined(AUTHENTICATION)
1.41 millert 602: extern int auth_togdebug(int);
1.1 deraadt 603: #endif
1.10 art 604: #if defined(ENCRYPTION)
1.41 millert 605: extern int EncryptAutoEnc(int);
606: extern int EncryptAutoDec(int);
607: extern int EncryptDebug(int);
608: extern int EncryptVerbose(int);
1.10 art 609: #endif
610:
1.1 deraadt 611:
612: struct togglelist {
613: char *name; /* name of toggle */
614: char *help; /* help message */
615: int (*handler)(); /* routine to do actual setting */
616: int *variable;
617: char *actionexplanation;
1.8 robin 618: int needconnect; /* Need to be connected */
1.1 deraadt 619: };
620:
621: static struct togglelist Togglelist[] = {
622: { "autoflush",
623: "flushing of output when sending interrupt characters",
624: 0,
625: &autoflush,
1.10 art 626: "flush output when sending interrupt characters" },
1.1 deraadt 627: { "autosynch",
628: "automatic sending of interrupt characters in urgent mode",
629: 0,
630: &autosynch,
1.10 art 631: "send interrupt characters in urgent mode" },
1.1 deraadt 632: #if defined(AUTHENTICATION)
633: { "autologin",
634: "automatic sending of login and/or authentication info",
635: 0,
636: &autologin,
1.10 art 637: "send login name and/or authentication information" },
1.1 deraadt 638: { "authdebug",
639: "Toggle authentication debugging",
640: auth_togdebug,
641: 0,
1.10 art 642: "print authentication debugging information" },
643: #endif
644: #if defined(ENCRYPTION)
645: { "autoencrypt",
646: "automatic encryption of data stream",
647: EncryptAutoEnc,
648: 0,
649: "automatically encrypt output" },
650: { "autodecrypt",
651: "automatic decryption of data stream",
652: EncryptAutoDec,
653: 0,
654: "automatically decrypt input" },
655: { "verbose_encrypt",
656: "Toggle verbose encryption output",
657: EncryptVerbose,
658: 0,
659: "print verbose encryption output" },
660: { "encdebug",
661: "Toggle encryption debugging",
662: EncryptDebug,
663: 0,
664: "print encryption debugging information" },
1.1 deraadt 665: #endif
666: { "skiprc",
667: "don't read ~/.telnetrc file",
668: 0,
669: &skiprc,
1.10 art 670: "skip reading of ~/.telnetrc file" },
1.1 deraadt 671: { "binary",
672: "sending and receiving of binary data",
673: togbinary,
674: 0,
1.10 art 675: 0 },
1.1 deraadt 676: { "inbinary",
677: "receiving of binary data",
678: togrbinary,
679: 0,
1.10 art 680: 0 },
1.1 deraadt 681: { "outbinary",
682: "sending of binary data",
683: togxbinary,
684: 0,
1.10 art 685: 0 },
1.1 deraadt 686: { "crlf",
687: "sending carriage returns as telnet <CR><LF>",
688: togcrlf,
689: &crlf,
1.10 art 690: 0 },
1.1 deraadt 691: { "crmod",
692: "mapping of received carriage returns",
693: 0,
694: &crmod,
1.10 art 695: "map carriage return on output" },
1.1 deraadt 696: { "localchars",
697: "local recognition of certain control characters",
698: lclchars,
699: &localchars,
1.10 art 700: "recognize certain control characters" },
1.8 robin 701: { " ", "", 0, 0 }, /* empty line */
1.1 deraadt 702: #if defined(unix) && defined(TN3270)
703: { "apitrace",
704: "(debugging) toggle tracing of API transactions",
705: 0,
706: &apitrace,
1.8 robin 707: "trace API transactions", 0 },
1.1 deraadt 708: { "cursesdata",
709: "(debugging) toggle printing of hexadecimal curses data",
710: 0,
711: &cursesdata,
1.8 robin 712: "print hexadecimal representation of curses data", 0 },
1.1 deraadt 713: #endif /* defined(unix) && defined(TN3270) */
714: { "debug",
715: "debugging",
716: togdebug,
717: &debug,
1.10 art 718: "turn on socket level debugging" },
1.1 deraadt 719: { "netdata",
720: "printing of hexadecimal network data (debugging)",
721: 0,
722: &netdata,
1.10 art 723: "print hexadecimal representation of network traffic" },
1.1 deraadt 724: { "prettydump",
725: "output of \"netdata\" to user readable format (debugging)",
726: 0,
727: &prettydump,
1.10 art 728: "print user readable output for \"netdata\"" },
1.1 deraadt 729: { "options",
730: "viewing of options processing (debugging)",
731: 0,
732: &showoptions,
1.10 art 733: "show option processing" },
1.1 deraadt 734: #if defined(unix)
735: { "termdata",
736: "(debugging) toggle printing of hexadecimal terminal data",
737: 0,
738: &termdata,
1.10 art 739: "print hexadecimal representation of terminal traffic" },
1.1 deraadt 740: #endif /* defined(unix) */
741: { "?",
742: 0,
1.10 art 743: togglehelp },
1.1 deraadt 744: { "help",
745: 0,
1.10 art 746: togglehelp },
1.1 deraadt 747: { 0 }
748: };
749:
750: static int
751: togglehelp()
752: {
753: struct togglelist *c;
754:
755: for (c = Togglelist; c->name; c++) {
756: if (c->help) {
757: if (*c->help)
1.10 art 758: printf("%-15s toggle %s\r\n", c->name, c->help);
1.1 deraadt 759: else
1.10 art 760: printf("\r\n");
1.1 deraadt 761: }
762: }
1.10 art 763: printf("\r\n");
764: printf("%-15s %s\r\n", "?", "display help information");
1.1 deraadt 765: return 0;
766: }
767:
768: static void
769: settogglehelp(set)
770: int set;
771: {
772: struct togglelist *c;
773:
774: for (c = Togglelist; c->name; c++) {
775: if (c->help) {
776: if (*c->help)
1.10 art 777: printf("%-15s %s %s\r\n", c->name, set ? "enable" : "disable",
1.1 deraadt 778: c->help);
779: else
1.10 art 780: printf("\r\n");
1.1 deraadt 781: }
782: }
783: }
784:
785: #define GETTOGGLE(name) (struct togglelist *) \
786: genget(name, (char **) Togglelist, sizeof(struct togglelist))
787:
788: static int
789: toggle(argc, argv)
790: int argc;
791: char *argv[];
792: {
793: int retval = 1;
794: char *name;
795: struct togglelist *c;
796:
797: if (argc < 2) {
798: fprintf(stderr,
1.10 art 799: "Need an argument to 'toggle' command. 'toggle ?' for help.\r\n");
1.1 deraadt 800: return 0;
801: }
802: argc--;
803: argv++;
804: while (argc--) {
805: name = *argv++;
806: c = GETTOGGLE(name);
807: if (Ambiguous(c)) {
1.10 art 808: fprintf(stderr, "'%s': ambiguous argument ('toggle ?' for help).\r\n",
1.1 deraadt 809: name);
810: return 0;
811: } else if (c == 0) {
1.10 art 812: fprintf(stderr, "'%s': unknown argument ('toggle ?' for help).\r\n",
1.1 deraadt 813: name);
814: return 0;
1.8 robin 815: } else if (!connected && c->needconnect) {
1.10 art 816: printf("?Need to be connected first.\r\n");
817: printf("'send ?' for help\r\n");
1.8 robin 818: return 0;
1.1 deraadt 819: } else {
820: if (c->variable) {
821: *c->variable = !*c->variable; /* invert it */
822: if (c->actionexplanation) {
1.10 art 823: printf("%s %s.\r\n", *c->variable? "Will" : "Won't",
1.1 deraadt 824: c->actionexplanation);
825: }
826: }
827: if (c->handler) {
828: retval &= (*c->handler)(-1);
829: }
830: }
831: }
832: return retval;
833: }
834:
835: /*
836: * The following perform the "set" command.
837: */
838:
839: #ifdef USE_TERMIO
1.10 art 840: struct termios new_tc = { 0 };
1.1 deraadt 841: #endif
842:
843: struct setlist {
844: char *name; /* name */
845: char *help; /* help information */
846: void (*handler)();
847: cc_t *charp; /* where it is located at */
848: };
849:
850: static struct setlist Setlist[] = {
851: #ifdef KLUDGELINEMODE
852: { "echo", "character to toggle local echoing on/off", 0, &echoc },
853: #endif
854: { "escape", "character to escape back to telnet command mode", 0, &escape },
855: { "rlogin", "rlogin escape character", 0, &rlogin },
856: { "tracefile", "file to write trace information to", SetNetTrace, (cc_t *)NetTraceFile},
857: { " ", "" },
858: { " ", "The following need 'localchars' to be toggled true", 0, 0 },
1.10 art 859: { "flushoutput", "character to cause an Abort Output", 0, &termFlushChar },
860: { "interrupt", "character to cause an Interrupt Process", 0, &termIntChar },
861: { "quit", "character to cause an Abort process", 0, &termQuitChar },
862: { "eof", "character to cause an EOF ", 0, &termEofChar },
1.1 deraadt 863: { " ", "" },
864: { " ", "The following are for local editing in linemode", 0, 0 },
1.10 art 865: { "erase", "character to use to erase a character", 0, &termEraseChar },
866: { "kill", "character to use to erase a line", 0, &termKillChar },
867: { "lnext", "character to use for literal next", 0, &termLiteralNextChar },
868: { "susp", "character to cause a Suspend Process", 0, &termSuspChar },
869: { "reprint", "character to use for line reprint", 0, &termRprntChar },
870: { "worderase", "character to use to erase a word", 0, &termWerasChar },
871: { "start", "character to use for XON", 0, &termStartChar },
872: { "stop", "character to use for XOFF", 0, &termStopChar },
873: { "forw1", "alternate end of line character", 0, &termForw1Char },
874: { "forw2", "alternate end of line character", 0, &termForw2Char },
875: { "ayt", "alternate AYT character", 0, &termAytChar },
1.1 deraadt 876: { 0 }
877: };
878:
879: static struct setlist *
880: getset(name)
881: char *name;
882: {
883: return (struct setlist *)
884: genget(name, (char **) Setlist, sizeof(struct setlist));
885: }
886:
887: void
888: set_escape_char(s)
889: char *s;
890: {
891: if (rlogin != _POSIX_VDISABLE) {
892: rlogin = (s && *s) ? special(s) : _POSIX_VDISABLE;
1.10 art 893: printf("Telnet rlogin escape character is '%s'.\r\n",
1.1 deraadt 894: control(rlogin));
895: } else {
896: escape = (s && *s) ? special(s) : _POSIX_VDISABLE;
1.10 art 897: printf("Telnet escape character is '%s'.\r\n", control(escape));
1.1 deraadt 898: }
899: }
900:
901: static int
902: setcmd(argc, argv)
903: int argc;
904: char *argv[];
905: {
906: int value;
907: struct setlist *ct;
908: struct togglelist *c;
909:
910: if (argc < 2 || argc > 3) {
1.10 art 911: printf("Format is 'set Name Value'\r\n'set ?' for help.\r\n");
1.1 deraadt 912: return 0;
913: }
914: if ((argc == 2) && (isprefix(argv[1], "?") || isprefix(argv[1], "help"))) {
915: for (ct = Setlist; ct->name; ct++)
1.10 art 916: printf("%-15s %s\r\n", ct->name, ct->help);
917: printf("\r\n");
1.1 deraadt 918: settogglehelp(1);
1.10 art 919: printf("%-15s %s\r\n", "?", "display help information");
1.1 deraadt 920: return 0;
921: }
922:
923: ct = getset(argv[1]);
924: if (ct == 0) {
925: c = GETTOGGLE(argv[1]);
926: if (c == 0) {
1.10 art 927: fprintf(stderr, "'%s': unknown argument ('set ?' for help).\r\n",
1.1 deraadt 928: argv[1]);
929: return 0;
930: } else if (Ambiguous(c)) {
1.10 art 931: fprintf(stderr, "'%s': ambiguous argument ('set ?' for help).\r\n",
1.1 deraadt 932: argv[1]);
933: return 0;
1.8 robin 934: } else if (!connected && c->needconnect) {
1.10 art 935: printf("?Need to be connected first.\r\n");
936: printf("'send ?' for help\r\n");
1.8 robin 937: return 0;
1.1 deraadt 938: }
1.8 robin 939:
1.1 deraadt 940: if (c->variable) {
941: if ((argc == 2) || (strcmp("on", argv[2]) == 0))
942: *c->variable = 1;
943: else if (strcmp("off", argv[2]) == 0)
944: *c->variable = 0;
945: else {
1.10 art 946: printf("Format is 'set togglename [on|off]'\r\n'set ?' for help.\r\n");
1.1 deraadt 947: return 0;
948: }
949: if (c->actionexplanation) {
1.10 art 950: printf("%s %s.\r\n", *c->variable? "Will" : "Won't",
1.1 deraadt 951: c->actionexplanation);
952: }
953: }
954: if (c->handler)
955: (*c->handler)(1);
956: } else if (argc != 3) {
1.10 art 957: printf("Format is 'set Name Value'\r\n'set ?' for help.\r\n");
1.1 deraadt 958: return 0;
959: } else if (Ambiguous(ct)) {
1.10 art 960: fprintf(stderr, "'%s': ambiguous argument ('set ?' for help).\r\n",
1.1 deraadt 961: argv[1]);
962: return 0;
963: } else if (ct->handler) {
964: (*ct->handler)(argv[2]);
1.10 art 965: printf("%s set to \"%s\".\r\n", ct->name, (char *)ct->charp);
1.1 deraadt 966: } else {
967: if (strcmp("off", argv[2])) {
968: value = special(argv[2]);
969: } else {
970: value = _POSIX_VDISABLE;
971: }
972: *(ct->charp) = (cc_t)value;
1.10 art 973: printf("%s character is '%s'.\r\n", ct->name, control(*(ct->charp)));
1.1 deraadt 974: }
975: slc_check();
976: return 1;
977: }
978:
979: static int
980: unsetcmd(argc, argv)
981: int argc;
982: char *argv[];
983: {
984: struct setlist *ct;
985: struct togglelist *c;
1.39 mpech 986: char *name;
1.1 deraadt 987:
988: if (argc < 2) {
989: fprintf(stderr,
1.10 art 990: "Need an argument to 'unset' command. 'unset ?' for help.\r\n");
1.1 deraadt 991: return 0;
992: }
993: if (isprefix(argv[1], "?") || isprefix(argv[1], "help")) {
994: for (ct = Setlist; ct->name; ct++)
1.10 art 995: printf("%-15s %s\r\n", ct->name, ct->help);
996: printf("\r\n");
1.1 deraadt 997: settogglehelp(0);
1.10 art 998: printf("%-15s %s\r\n", "?", "display help information");
1.1 deraadt 999: return 0;
1000: }
1001:
1002: argc--;
1003: argv++;
1004: while (argc--) {
1005: name = *argv++;
1006: ct = getset(name);
1007: if (ct == 0) {
1008: c = GETTOGGLE(name);
1009: if (c == 0) {
1.10 art 1010: fprintf(stderr, "'%s': unknown argument ('unset ?' for help).\r\n",
1.1 deraadt 1011: name);
1012: return 0;
1013: } else if (Ambiguous(c)) {
1.10 art 1014: fprintf(stderr, "'%s': ambiguous argument ('unset ?' for help).\r\n",
1.1 deraadt 1015: name);
1016: return 0;
1017: }
1018: if (c->variable) {
1019: *c->variable = 0;
1020: if (c->actionexplanation) {
1.10 art 1021: printf("%s %s.\r\n", *c->variable? "Will" : "Won't",
1.1 deraadt 1022: c->actionexplanation);
1023: }
1024: }
1025: if (c->handler)
1026: (*c->handler)(0);
1027: } else if (Ambiguous(ct)) {
1.10 art 1028: fprintf(stderr, "'%s': ambiguous argument ('unset ?' for help).\r\n",
1.1 deraadt 1029: name);
1030: return 0;
1031: } else if (ct->handler) {
1032: (*ct->handler)(0);
1.10 art 1033: printf("%s reset to \"%s\".\r\n", ct->name, (char *)ct->charp);
1.1 deraadt 1034: } else {
1035: *(ct->charp) = _POSIX_VDISABLE;
1.10 art 1036: printf("%s character is '%s'.\r\n", ct->name, control(*(ct->charp)));
1.1 deraadt 1037: }
1038: }
1039: return 1;
1040: }
1041:
1042: /*
1043: * The following are the data structures and routines for the
1044: * 'mode' command.
1045: */
1046: #ifdef KLUDGELINEMODE
1047: extern int kludgelinemode;
1048:
1049: static int
1050: dokludgemode()
1051: {
1052: kludgelinemode = 1;
1053: send_wont(TELOPT_LINEMODE, 1);
1054: send_dont(TELOPT_SGA, 1);
1055: send_dont(TELOPT_ECHO, 1);
1.10 art 1056: return 1;
1.1 deraadt 1057: }
1058: #endif
1059:
1060: static int
1061: dolinemode()
1062: {
1063: #ifdef KLUDGELINEMODE
1064: if (kludgelinemode)
1065: send_dont(TELOPT_SGA, 1);
1066: #endif
1067: send_will(TELOPT_LINEMODE, 1);
1068: send_dont(TELOPT_ECHO, 1);
1069: return 1;
1070: }
1071:
1072: static int
1073: docharmode()
1074: {
1075: #ifdef KLUDGELINEMODE
1076: if (kludgelinemode)
1077: send_do(TELOPT_SGA, 1);
1078: else
1079: #endif
1080: send_wont(TELOPT_LINEMODE, 1);
1081: send_do(TELOPT_ECHO, 1);
1082: return 1;
1083: }
1084:
1085: static int
1086: dolmmode(bit, on)
1087: int bit, on;
1088: {
1089: unsigned char c;
1090: extern int linemode;
1091:
1092: if (my_want_state_is_wont(TELOPT_LINEMODE)) {
1.10 art 1093: printf("?Need to have LINEMODE option enabled first.\r\n");
1094: printf("'mode ?' for help.\r\n");
1.1 deraadt 1095: return 0;
1096: }
1097:
1098: if (on)
1099: c = (linemode | bit);
1100: else
1101: c = (linemode & ~bit);
1102: lm_mode(&c, 1, 1);
1103: return 1;
1104: }
1105:
1106: int
1.10 art 1107: tn_setmode(bit)
1.1 deraadt 1108: {
1109: return dolmmode(bit, 1);
1110: }
1111:
1112: int
1.10 art 1113: tn_clearmode(bit)
1.1 deraadt 1114: {
1115: return dolmmode(bit, 0);
1116: }
1117:
1118: struct modelist {
1119: char *name; /* command name */
1120: char *help; /* help string */
1121: int (*handler)(); /* routine which executes command */
1122: int needconnect; /* Do we need to be connected to execute? */
1123: int arg1;
1124: };
1125:
1.40 millert 1126: static int modehelp(void);
1.1 deraadt 1127:
1128: static struct modelist ModeList[] = {
1129: { "character", "Disable LINEMODE option", docharmode, 1 },
1130: #ifdef KLUDGELINEMODE
1131: { "", "(or disable obsolete line-by-line mode)", 0 },
1132: #endif
1133: { "line", "Enable LINEMODE option", dolinemode, 1 },
1134: #ifdef KLUDGELINEMODE
1135: { "", "(or enable obsolete line-by-line mode)", 0 },
1136: #endif
1137: { "", "", 0 },
1138: { "", "These require the LINEMODE option to be enabled", 0 },
1.10 art 1139: { "isig", "Enable signal trapping", tn_setmode, 1, MODE_TRAPSIG },
1140: { "+isig", 0, tn_setmode, 1, MODE_TRAPSIG },
1141: { "-isig", "Disable signal trapping", tn_clearmode, 1, MODE_TRAPSIG },
1142: { "edit", "Enable character editing", tn_setmode, 1, MODE_EDIT },
1143: { "+edit", 0, tn_setmode, 1, MODE_EDIT },
1144: { "-edit", "Disable character editing", tn_clearmode, 1, MODE_EDIT },
1145: { "softtabs", "Enable tab expansion", tn_setmode, 1, MODE_SOFT_TAB },
1146: { "+softtabs", 0, tn_setmode, 1, MODE_SOFT_TAB },
1147: { "-softtabs", "Disable character editing", tn_clearmode, 1, MODE_SOFT_TAB },
1148: { "litecho", "Enable literal character echo", tn_setmode, 1, MODE_LIT_ECHO },
1149: { "+litecho", 0, tn_setmode, 1, MODE_LIT_ECHO },
1150: { "-litecho", "Disable literal character echo", tn_clearmode, 1, MODE_LIT_ECHO },
1.1 deraadt 1151: { "help", 0, modehelp, 0 },
1152: #ifdef KLUDGELINEMODE
1153: { "kludgeline", 0, dokludgemode, 1 },
1154: #endif
1155: { "", "", 0 },
1156: { "?", "Print help information", modehelp, 0 },
1157: { 0 },
1158: };
1159:
1160:
1.10 art 1161: static int
1.1 deraadt 1162: modehelp()
1163: {
1164: struct modelist *mt;
1165:
1.10 art 1166: printf("format is: 'mode Mode', where 'Mode' is one of:\r\n\r\n");
1.1 deraadt 1167: for (mt = ModeList; mt->name; mt++) {
1168: if (mt->help) {
1169: if (*mt->help)
1.10 art 1170: printf("%-15s %s\r\n", mt->name, mt->help);
1.1 deraadt 1171: else
1.10 art 1172: printf("\r\n");
1.1 deraadt 1173: }
1174: }
1175: return 0;
1176: }
1177:
1178: #define GETMODECMD(name) (struct modelist *) \
1179: genget(name, (char **) ModeList, sizeof(struct modelist))
1180:
1181: static int
1182: modecmd(argc, argv)
1183: int argc;
1184: char *argv[];
1185: {
1186: struct modelist *mt;
1187:
1188: if (argc != 2) {
1.10 art 1189: printf("'mode' command requires an argument\r\n");
1190: printf("'mode ?' for help.\r\n");
1.1 deraadt 1191: } else if ((mt = GETMODECMD(argv[1])) == 0) {
1.10 art 1192: fprintf(stderr, "Unknown mode '%s' ('mode ?' for help).\r\n", argv[1]);
1.1 deraadt 1193: } else if (Ambiguous(mt)) {
1.10 art 1194: fprintf(stderr, "Ambiguous mode '%s' ('mode ?' for help).\r\n", argv[1]);
1.1 deraadt 1195: } else if (mt->needconnect && !connected) {
1.10 art 1196: printf("?Need to be connected first.\r\n");
1197: printf("'mode ?' for help.\r\n");
1.1 deraadt 1198: } else if (mt->handler) {
1199: return (*mt->handler)(mt->arg1);
1200: }
1201: return 0;
1202: }
1203:
1204: /*
1205: * The following data structures and routines implement the
1206: * "display" command.
1207: */
1208:
1209: static int
1210: display(argc, argv)
1211: int argc;
1212: char *argv[];
1213: {
1214: struct togglelist *tl;
1215: struct setlist *sl;
1216:
1217: #define dotog(tl) if (tl->variable && tl->actionexplanation) { \
1218: if (*tl->variable) { \
1219: printf("will"); \
1220: } else { \
1221: printf("won't"); \
1222: } \
1.10 art 1223: printf(" %s.\r\n", tl->actionexplanation); \
1.1 deraadt 1224: }
1225:
1226: #define doset(sl) if (sl->name && *sl->name != ' ') { \
1227: if (sl->handler == 0) \
1.10 art 1228: printf("%-15s [%s]\r\n", sl->name, control(*sl->charp)); \
1.1 deraadt 1229: else \
1.10 art 1230: printf("%-15s \"%s\"\r\n", sl->name, (char *)sl->charp); \
1.1 deraadt 1231: }
1232:
1233: if (argc == 1) {
1234: for (tl = Togglelist; tl->name; tl++) {
1235: dotog(tl);
1236: }
1.10 art 1237: printf("\r\n");
1.1 deraadt 1238: for (sl = Setlist; sl->name; sl++) {
1239: doset(sl);
1240: }
1241: } else {
1242: int i;
1243:
1244: for (i = 1; i < argc; i++) {
1245: sl = getset(argv[i]);
1246: tl = GETTOGGLE(argv[i]);
1247: if (Ambiguous(sl) || Ambiguous(tl)) {
1.10 art 1248: printf("?Ambiguous argument '%s'.\r\n", argv[i]);
1.1 deraadt 1249: return 0;
1250: } else if (!sl && !tl) {
1.10 art 1251: printf("?Unknown argument '%s'.\r\n", argv[i]);
1.1 deraadt 1252: return 0;
1253: } else {
1254: if (tl) {
1255: dotog(tl);
1256: }
1257: if (sl) {
1258: doset(sl);
1259: }
1260: }
1261: }
1262: }
1263: /*@*/optionstatus();
1.10 art 1264: #if defined(ENCRYPTION)
1265: EncryptStatus();
1266: #endif
1.1 deraadt 1267: return 1;
1268: #undef doset
1269: #undef dotog
1270: }
1.10 art 1271:
1.1 deraadt 1272: /*
1273: * The following are the data structures, and many of the routines,
1274: * relating to command processing.
1275: */
1276:
1277: /*
1278: * Set the escape character.
1279: */
1280: static int
1281: setescape(argc, argv)
1282: int argc;
1283: char *argv[];
1284: {
1.39 mpech 1285: char *arg;
1.1 deraadt 1286: char buf[50];
1287:
1288: printf(
1.10 art 1289: "Deprecated usage - please use 'set escape%s%s' in the future.\r\n",
1.1 deraadt 1290: (argc > 2)? " ":"", (argc > 2)? argv[1]: "");
1291: if (argc > 2)
1292: arg = argv[1];
1293: else {
1294: printf("new escape character: ");
1295: (void) fgets(buf, sizeof(buf), stdin);
1296: arg = buf;
1297: }
1298: if (arg[0] != '\0')
1299: escape = arg[0];
1300: if (!In3270) {
1.10 art 1301: printf("Escape character is '%s'.\r\n", control(escape));
1.1 deraadt 1302: }
1303: (void) fflush(stdout);
1304: return 1;
1305: }
1306:
1307: /*VARARGS*/
1308: static int
1309: togcrmod()
1310: {
1311: crmod = !crmod;
1.10 art 1312: printf("Deprecated usage - please use 'toggle crmod' in the future.\r\n");
1313: printf("%s map carriage return on output.\r\n", crmod ? "Will" : "Won't");
1.1 deraadt 1314: (void) fflush(stdout);
1315: return 1;
1316: }
1317:
1318: /*VARARGS*/
1.11 deraadt 1319: int
1.10 art 1320: telnetsuspend()
1.1 deraadt 1321: {
1322: #ifdef SIGTSTP
1323: setcommandmode();
1324: {
1325: long oldrows, oldcols, newrows, newcols, err;
1326:
1327: err = (TerminalWindowSize(&oldrows, &oldcols) == 0) ? 1 : 0;
1328: (void) kill(0, SIGTSTP);
1329: /*
1330: * If we didn't get the window size before the SUSPEND, but we
1.3 niklas 1331: * can get them now (?), then send the NAWS to make sure that
1.1 deraadt 1332: * we are set up for the right window size.
1333: */
1334: if (TerminalWindowSize(&newrows, &newcols) && connected &&
1335: (err || ((oldrows != newrows) || (oldcols != newcols)))) {
1336: sendnaws();
1337: }
1338: }
1339: /* reget parameters in case they were changed */
1340: TerminalSaveState();
1341: setconnmode(0);
1342: #else
1.10 art 1343: printf("Suspend is not supported. Try the '!' command instead\r\n");
1.1 deraadt 1344: #endif
1345: return 1;
1346: }
1347:
1348: #if !defined(TN3270)
1349: /*ARGSUSED*/
1350: int
1351: shell(argc, argv)
1352: int argc;
1353: char *argv[];
1354: {
1355: long oldrows, oldcols, newrows, newcols, err;
1356:
1357: setcommandmode();
1358:
1359: err = (TerminalWindowSize(&oldrows, &oldcols) == 0) ? 1 : 0;
1360: switch(vfork()) {
1361: case -1:
1.10 art 1362: perror("Fork failed\r\n");
1.1 deraadt 1363: break;
1364:
1365: case 0:
1366: {
1367: /*
1368: * Fire up the shell in the child.
1369: */
1.39 mpech 1370: char *shellp, *shellname;
1.1 deraadt 1371:
1372: shellp = getenv("SHELL");
1373: if (shellp == NULL)
1374: shellp = "/bin/sh";
1.3 niklas 1375: if ((shellname = strrchr(shellp, '/')) == 0)
1.1 deraadt 1376: shellname = shellp;
1377: else
1378: shellname++;
1379: if (argc > 1)
1.36 deraadt 1380: execl(shellp, shellname, "-c", &saveline[1], (char *)NULL);
1.1 deraadt 1381: else
1.36 deraadt 1382: execl(shellp, shellname, (char *)NULL);
1.1 deraadt 1383: perror("Execl");
1384: _exit(1);
1385: }
1386: default:
1387: (void)wait((int *)0); /* Wait for the shell to complete */
1388:
1389: if (TerminalWindowSize(&newrows, &newcols) && connected &&
1390: (err || ((oldrows != newrows) || (oldcols != newcols)))) {
1391: sendnaws();
1392: }
1393: break;
1394: }
1395: return 1;
1396: }
1397: #else /* !defined(TN3270) */
1398: extern int shell();
1399: #endif /* !defined(TN3270) */
1400:
1401: /*VARARGS*/
1.15 art 1402: static int
1.1 deraadt 1403: bye(argc, argv)
1404: int argc; /* Number of arguments */
1405: char *argv[]; /* arguments */
1406: {
1407: extern int resettermname;
1408:
1409: if (connected) {
1410: (void) shutdown(net, 2);
1.10 art 1411: printf("Connection closed.\r\n");
1.1 deraadt 1412: (void) NetClose(net);
1413: connected = 0;
1414: resettermname = 1;
1.10 art 1415: #if defined(AUTHENTICATION) || defined(ENCRYPTION)
1.1 deraadt 1416: auth_encrypt_connect(connected);
1417: #endif /* defined(AUTHENTICATION) */
1418: /* reset options */
1419: tninit();
1420: #if defined(TN3270)
1421: SetIn3270(); /* Get out of 3270 mode */
1422: #endif /* defined(TN3270) */
1423: }
1424: if ((argc != 2) || (strcmp(argv[1], "fromquit") != 0)) {
1425: longjmp(toplevel, 1);
1426: /* NOTREACHED */
1427: }
1.10 art 1428: return 0; /* NOTREACHED */
1.1 deraadt 1429: }
1430:
1431: /*VARARGS*/
1.10 art 1432: int
1.1 deraadt 1433: quit()
1434: {
1435: (void) call(bye, "bye", "fromquit", 0);
1436: Exit(0);
1.10 art 1437: return 0; /*NOTREACHED*/
1.1 deraadt 1438: }
1439:
1440: /*VARARGS*/
1.10 art 1441: static int
1.1 deraadt 1442: logout()
1443: {
1444: send_do(TELOPT_LOGOUT, 1);
1445: (void) netflush();
1446: return 1;
1447: }
1448:
1449:
1450: /*
1451: * The SLC command.
1452: */
1453:
1454: struct slclist {
1455: char *name;
1456: char *help;
1457: void (*handler)();
1458: int arg;
1459: };
1460:
1461: static void slc_help();
1462:
1463: struct slclist SlcList[] = {
1464: { "export", "Use local special character definitions",
1465: slc_mode_export, 0 },
1466: { "import", "Use remote special character definitions",
1467: slc_mode_import, 1 },
1468: { "check", "Verify remote special character definitions",
1469: slc_mode_import, 0 },
1470: { "help", 0, slc_help, 0 },
1471: { "?", "Print help information", slc_help, 0 },
1472: { 0 },
1473: };
1474:
1475: static void
1476: slc_help()
1477: {
1478: struct slclist *c;
1479:
1480: for (c = SlcList; c->name; c++) {
1481: if (c->help) {
1482: if (*c->help)
1.10 art 1483: printf("%-15s %s\r\n", c->name, c->help);
1.1 deraadt 1484: else
1.10 art 1485: printf("\r\n");
1.1 deraadt 1486: }
1487: }
1488: }
1489:
1490: static struct slclist *
1491: getslc(name)
1492: char *name;
1493: {
1494: return (struct slclist *)
1495: genget(name, (char **) SlcList, sizeof(struct slclist));
1496: }
1497:
1.15 art 1498: static int
1.1 deraadt 1499: slccmd(argc, argv)
1500: int argc;
1501: char *argv[];
1502: {
1503: struct slclist *c;
1504:
1505: if (argc != 2) {
1506: fprintf(stderr,
1.10 art 1507: "Need an argument to 'slc' command. 'slc ?' for help.\r\n");
1.1 deraadt 1508: return 0;
1509: }
1510: c = getslc(argv[1]);
1511: if (c == 0) {
1.10 art 1512: fprintf(stderr, "'%s': unknown argument ('slc ?' for help).\r\n",
1.1 deraadt 1513: argv[1]);
1.3 niklas 1514: return 0;
1.1 deraadt 1515: }
1516: if (Ambiguous(c)) {
1.10 art 1517: fprintf(stderr, "'%s': ambiguous argument ('slc ?' for help).\r\n",
1.1 deraadt 1518: argv[1]);
1.3 niklas 1519: return 0;
1.1 deraadt 1520: }
1521: (*c->handler)(c->arg);
1522: slcstate();
1523: return 1;
1524: }
1525:
1526: /*
1527: * The ENVIRON command.
1528: */
1529:
1530: struct envlist {
1531: char *name;
1532: char *help;
1533: void (*handler)();
1534: int narg;
1535: };
1536:
1.41 millert 1537: static void env_help(void);
1.1 deraadt 1538:
1539: struct envlist EnvList[] = {
1540: { "define", "Define an environment variable",
1541: (void (*)())env_define, 2 },
1542: { "undefine", "Undefine an environment variable",
1543: env_undefine, 1 },
1544: { "export", "Mark an environment variable for automatic export",
1545: env_export, 1 },
1546: { "unexport", "Don't mark an environment variable for automatic export",
1547: env_unexport, 1 },
1548: { "send", "Send an environment variable", env_send, 1 },
1549: { "list", "List the current environment variables",
1550: env_list, 0 },
1551: #if defined(OLD_ENVIRON) && defined(ENV_HACK)
1552: { "varval", "Reverse VAR and VALUE (auto, right, wrong, status)",
1553: env_varval, 1 },
1554: #endif
1555: { "help", 0, env_help, 0 },
1556: { "?", "Print help information", env_help, 0 },
1557: { 0 },
1558: };
1559:
1560: static void
1561: env_help()
1562: {
1563: struct envlist *c;
1564:
1565: for (c = EnvList; c->name; c++) {
1566: if (c->help) {
1567: if (*c->help)
1.10 art 1568: printf("%-15s %s\r\n", c->name, c->help);
1.1 deraadt 1569: else
1.10 art 1570: printf("\r\n");
1.1 deraadt 1571: }
1572: }
1573: }
1574:
1575: static struct envlist *
1576: getenvcmd(name)
1577: char *name;
1578: {
1579: return (struct envlist *)
1580: genget(name, (char **) EnvList, sizeof(struct envlist));
1581: }
1582:
1.15 art 1583: int
1.1 deraadt 1584: env_cmd(argc, argv)
1585: int argc;
1586: char *argv[];
1587: {
1588: struct envlist *c;
1589:
1590: if (argc < 2) {
1591: fprintf(stderr,
1.10 art 1592: "Need an argument to 'environ' command. 'environ ?' for help.\r\n");
1.1 deraadt 1593: return 0;
1594: }
1595: c = getenvcmd(argv[1]);
1596: if (c == 0) {
1.10 art 1597: fprintf(stderr, "'%s': unknown argument ('environ ?' for help).\r\n",
1.1 deraadt 1598: argv[1]);
1.3 niklas 1599: return 0;
1.1 deraadt 1600: }
1601: if (Ambiguous(c)) {
1.10 art 1602: fprintf(stderr, "'%s': ambiguous argument ('environ ?' for help).\r\n",
1.1 deraadt 1603: argv[1]);
1.3 niklas 1604: return 0;
1.1 deraadt 1605: }
1606: if (c->narg + 2 != argc) {
1607: fprintf(stderr,
1.10 art 1608: "Need %s%d argument%s to 'environ %s' command. 'environ ?' for help.\r\n",
1.1 deraadt 1609: c->narg < argc + 2 ? "only " : "",
1610: c->narg, c->narg == 1 ? "" : "s", c->name);
1611: return 0;
1612: }
1613: (*c->handler)(argv[2], argv[3]);
1614: return 1;
1615: }
1616:
1617: struct env_lst {
1618: struct env_lst *next; /* pointer to next structure */
1619: struct env_lst *prev; /* pointer to previous structure */
1620: unsigned char *var; /* pointer to variable name */
1621: unsigned char *value; /* pointer to variable value */
1622: int export; /* 1 -> export with default list of variables */
1623: int welldefined; /* A well defined variable */
1624: };
1625:
1626: struct env_lst envlisthead;
1627:
1628: struct env_lst *
1629: env_find(var)
1630: unsigned char *var;
1631: {
1.39 mpech 1632: struct env_lst *ep;
1.1 deraadt 1633:
1634: for (ep = envlisthead.next; ep; ep = ep->next) {
1635: if (strcmp((char *)ep->var, (char *)var) == 0)
1636: return(ep);
1637: }
1638: return(NULL);
1639: }
1640:
1641: void
1642: env_init()
1643: {
1644: extern char **environ;
1.10 art 1645: char **epp, *cp;
1646: struct env_lst *ep;
1.1 deraadt 1647:
1648: for (epp = environ; *epp; epp++) {
1.10 art 1649: if ((cp = strchr(*epp, '='))) {
1.1 deraadt 1650: *cp = '\0';
1651: ep = env_define((unsigned char *)*epp,
1652: (unsigned char *)cp+1);
1653: ep->export = 0;
1654: *cp = '=';
1655: }
1656: }
1657: /*
1658: * Special case for DISPLAY variable. If it is ":0.0" or
1659: * "unix:0.0", we have to get rid of "unix" and insert our
1660: * hostname.
1661: */
1662: if ((ep = env_find("DISPLAY"))
1663: && ((*ep->value == ':')
1.3 niklas 1664: || (strncmp((char *)ep->value, "unix:", 5) == 0))) {
1.18 deraadt 1665: char hbuf[MAXHOSTNAMELEN];
1.3 niklas 1666: char *cp2 = strchr((char *)ep->value, ':');
1.1 deraadt 1667:
1.18 deraadt 1668: gethostname(hbuf, sizeof hbuf);
1.10 art 1669:
1670: /* If this is not the full name, try to get it via DNS */
1671: if (strchr(hbuf, '.') == 0) {
1672: struct hostent *he = gethostbyname(hbuf);
1673: if (he != 0)
1.19 deraadt 1674: strncpy(hbuf, he->h_name, sizeof hbuf-1);
1675: hbuf[sizeof hbuf-1] = '\0';
1.10 art 1676: }
1677:
1.44 pvalchev 1678: if (asprintf (&cp, "%s%s", hbuf, cp2) == -1)
1.14 art 1679: err(1, "asprintf");
1.10 art 1680:
1.1 deraadt 1681: free(ep->value);
1682: ep->value = (unsigned char *)cp;
1683: }
1684: /*
1685: * If USER is not defined, but LOGNAME is, then add
1686: * USER with the value from LOGNAME. By default, we
1687: * don't export the USER variable.
1688: */
1689: if ((env_find("USER") == NULL) && (ep = env_find("LOGNAME"))) {
1690: env_define((unsigned char *)"USER", ep->value);
1691: env_unexport((unsigned char *)"USER");
1692: }
1693: env_export((unsigned char *)"DISPLAY");
1694: env_export((unsigned char *)"PRINTER");
1.10 art 1695: env_export((unsigned char *)"XAUTHORITY");
1.1 deraadt 1696: }
1697:
1698: struct env_lst *
1699: env_define(var, value)
1700: unsigned char *var, *value;
1701: {
1.39 mpech 1702: struct env_lst *ep;
1.1 deraadt 1703:
1.10 art 1704: if ((ep = env_find(var))) {
1.1 deraadt 1705: if (ep->var)
1706: free(ep->var);
1707: if (ep->value)
1708: free(ep->value);
1709: } else {
1.14 art 1710: if ((ep = malloc(sizeof(struct env_lst))) == NULL)
1711: err(1, "malloc");
1.1 deraadt 1712: ep->next = envlisthead.next;
1713: envlisthead.next = ep;
1714: ep->prev = &envlisthead;
1715: if (ep->next)
1716: ep->next->prev = ep;
1717: }
1.10 art 1718: ep->welldefined = opt_welldefined((char *)var);
1.1 deraadt 1719: ep->export = 1;
1.14 art 1720: if ((ep->var = strdup((char *)var)) == NULL)
1721: err(1, "strdup");
1722: if ((ep->value = strdup((char *)value)) == NULL)
1723: err(1, "strdup");
1.1 deraadt 1724: return(ep);
1725: }
1726:
1727: void
1728: env_undefine(var)
1729: unsigned char *var;
1730: {
1.39 mpech 1731: struct env_lst *ep;
1.1 deraadt 1732:
1.10 art 1733: if ((ep = env_find(var))) {
1.1 deraadt 1734: ep->prev->next = ep->next;
1735: if (ep->next)
1736: ep->next->prev = ep->prev;
1737: if (ep->var)
1738: free(ep->var);
1739: if (ep->value)
1740: free(ep->value);
1741: free(ep);
1742: }
1743: }
1744:
1745: void
1746: env_export(var)
1747: unsigned char *var;
1748: {
1.39 mpech 1749: struct env_lst *ep;
1.1 deraadt 1750:
1.10 art 1751: if ((ep = env_find(var)))
1.1 deraadt 1752: ep->export = 1;
1753: }
1754:
1755: void
1756: env_unexport(var)
1757: unsigned char *var;
1758: {
1.39 mpech 1759: struct env_lst *ep;
1.1 deraadt 1760:
1.15 art 1761: if ((ep = env_find(var)) != NULL)
1.1 deraadt 1762: ep->export = 0;
1763: }
1764:
1765: void
1766: env_send(var)
1767: unsigned char *var;
1768: {
1.39 mpech 1769: struct env_lst *ep;
1.1 deraadt 1770:
1.3 niklas 1771: if (my_state_is_wont(TELOPT_NEW_ENVIRON)
1.1 deraadt 1772: #ifdef OLD_ENVIRON
1773: && my_state_is_wont(TELOPT_OLD_ENVIRON)
1774: #endif
1775: ) {
1776: fprintf(stderr,
1.10 art 1777: "Cannot send '%s': Telnet ENVIRON option not enabled\r\n",
1.1 deraadt 1778: var);
1779: return;
1780: }
1781: ep = env_find(var);
1782: if (ep == 0) {
1.10 art 1783: fprintf(stderr, "Cannot send '%s': variable not defined\r\n",
1.1 deraadt 1784: var);
1785: return;
1786: }
1787: env_opt_start_info();
1788: env_opt_add(ep->var);
1789: env_opt_end(0);
1790: }
1791:
1792: void
1793: env_list()
1794: {
1.39 mpech 1795: struct env_lst *ep;
1.1 deraadt 1796:
1797: for (ep = envlisthead.next; ep; ep = ep->next) {
1.10 art 1798: printf("%c %-20s %s\r\n", ep->export ? '*' : ' ',
1.1 deraadt 1799: ep->var, ep->value);
1800: }
1801: }
1802:
1803: unsigned char *
1804: env_default(init, welldefined)
1805: int init;
1806: {
1807: static struct env_lst *nep = NULL;
1808:
1809: if (init) {
1810: nep = &envlisthead;
1.10 art 1811: return NULL;
1.1 deraadt 1812: }
1813: if (nep) {
1.10 art 1814: while ((nep = nep->next)) {
1.1 deraadt 1815: if (nep->export && (nep->welldefined == welldefined))
1816: return(nep->var);
1817: }
1818: }
1819: return(NULL);
1820: }
1821:
1822: unsigned char *
1.48 otto 1823: env_getvalue(var, exported_only)
1.1 deraadt 1824: unsigned char *var;
1.48 otto 1825: int exported_only;
1.1 deraadt 1826: {
1.39 mpech 1827: struct env_lst *ep;
1.1 deraadt 1828:
1.48 otto 1829: if ((ep = env_find(var)) && (!exported_only || ep->export))
1.1 deraadt 1830: return(ep->value);
1831: return(NULL);
1832: }
1833:
1834: #if defined(OLD_ENVIRON) && defined(ENV_HACK)
1835: void
1836: env_varval(what)
1837: unsigned char *what;
1838: {
1839: extern int old_env_var, old_env_value, env_auto;
1840: int len = strlen((char *)what);
1841:
1842: if (len == 0)
1843: goto unknown;
1844:
1845: if (strncasecmp((char *)what, "status", len) == 0) {
1846: if (env_auto)
1847: printf("%s%s", "VAR and VALUE are/will be ",
1.10 art 1848: "determined automatically\r\n");
1.1 deraadt 1849: if (old_env_var == OLD_ENV_VAR)
1.10 art 1850: printf("VAR and VALUE set to correct definitions\r\n");
1.1 deraadt 1851: else
1.10 art 1852: printf("VAR and VALUE definitions are reversed\r\n");
1.1 deraadt 1853: } else if (strncasecmp((char *)what, "auto", len) == 0) {
1854: env_auto = 1;
1855: old_env_var = OLD_ENV_VALUE;
1856: old_env_value = OLD_ENV_VAR;
1857: } else if (strncasecmp((char *)what, "right", len) == 0) {
1858: env_auto = 0;
1859: old_env_var = OLD_ENV_VAR;
1860: old_env_value = OLD_ENV_VALUE;
1861: } else if (strncasecmp((char *)what, "wrong", len) == 0) {
1862: env_auto = 0;
1863: old_env_var = OLD_ENV_VALUE;
1864: old_env_value = OLD_ENV_VAR;
1865: } else {
1866: unknown:
1.10 art 1867: printf("Unknown \"varval\" command. (\"auto\", \"right\", \"wrong\", \"status\")\r\n");
1.1 deraadt 1868: }
1869: }
1870: #endif
1871:
1872: #if defined(AUTHENTICATION)
1873: /*
1874: * The AUTHENTICATE command.
1875: */
1876:
1877: struct authlist {
1878: char *name;
1879: char *help;
1880: int (*handler)();
1881: int narg;
1882: };
1883:
1884: static int
1.41 millert 1885: auth_help(void);
1.1 deraadt 1886:
1887: struct authlist AuthList[] = {
1888: { "status", "Display current status of authentication information",
1889: auth_status, 0 },
1890: { "disable", "Disable an authentication type ('auth disable ?' for more)",
1891: auth_disable, 1 },
1892: { "enable", "Enable an authentication type ('auth enable ?' for more)",
1893: auth_enable, 1 },
1894: { "help", 0, auth_help, 0 },
1895: { "?", "Print help information", auth_help, 0 },
1896: { 0 },
1897: };
1898:
1899: static int
1900: auth_help()
1901: {
1902: struct authlist *c;
1903:
1904: for (c = AuthList; c->name; c++) {
1905: if (c->help) {
1906: if (*c->help)
1.10 art 1907: printf("%-15s %s\r\n", c->name, c->help);
1.1 deraadt 1908: else
1.10 art 1909: printf("\r\n");
1.1 deraadt 1910: }
1911: }
1912: return 0;
1913: }
1914:
1.15 art 1915: int
1.1 deraadt 1916: auth_cmd(argc, argv)
1917: int argc;
1918: char *argv[];
1919: {
1920: struct authlist *c;
1921:
1.3 niklas 1922: if (argc < 2) {
1923: fprintf(stderr,
1.10 art 1924: "Need an argument to 'auth' command. 'auth ?' for help.\r\n");
1.3 niklas 1925: return 0;
1926: }
1927:
1.1 deraadt 1928: c = (struct authlist *)
1929: genget(argv[1], (char **) AuthList, sizeof(struct authlist));
1930: if (c == 0) {
1.10 art 1931: fprintf(stderr, "'%s': unknown argument ('auth ?' for help).\r\n",
1.1 deraadt 1932: argv[1]);
1.3 niklas 1933: return 0;
1.1 deraadt 1934: }
1935: if (Ambiguous(c)) {
1.10 art 1936: fprintf(stderr, "'%s': ambiguous argument ('auth ?' for help).\r\n",
1.1 deraadt 1937: argv[1]);
1.3 niklas 1938: return 0;
1.1 deraadt 1939: }
1940: if (c->narg + 2 != argc) {
1941: fprintf(stderr,
1.10 art 1942: "Need %s%d argument%s to 'auth %s' command. 'auth ?' for help.\r\n",
1.1 deraadt 1943: c->narg < argc + 2 ? "only " : "",
1944: c->narg, c->narg == 1 ? "" : "s", c->name);
1945: return 0;
1946: }
1947: return((*c->handler)(argv[2], argv[3]));
1948: }
1949: #endif
1950:
1.10 art 1951: #if defined(ENCRYPTION)
1952: /*
1953: * The ENCRYPT command.
1954: */
1955:
1956: struct encryptlist {
1957: char *name;
1958: char *help;
1959: int (*handler)();
1960: int needconnect;
1961: int minarg;
1962: int maxarg;
1963: };
1964:
1965: static int
1966: EncryptHelp (void);
1967:
1968: struct encryptlist EncryptList[] = {
1969: { "enable", "Enable encryption. ('encrypt enable ?' for more)",
1970: EncryptEnable, 1, 1, 2 },
1971: { "disable", "Disable encryption. ('encrypt enable ?' for more)",
1972: EncryptDisable, 0, 1, 2 },
1.20 art 1973: { "type", "Set encryption type. ('encrypt type ?' for more)",
1.10 art 1974: EncryptType, 0, 1, 1 },
1975: { "start", "Start encryption. ('encrypt start ?' for more)",
1976: EncryptStart, 1, 0, 1 },
1977: { "stop", "Stop encryption. ('encrypt stop ?' for more)",
1978: EncryptStop, 1, 0, 1 },
1979: { "input", "Start encrypting the input stream",
1980: EncryptStartInput, 1, 0, 0 },
1981: { "-input", "Stop encrypting the input stream",
1982: EncryptStopInput, 1, 0, 0 },
1983: { "output", "Start encrypting the output stream",
1984: EncryptStartOutput, 1, 0, 0 },
1985: { "-output", "Stop encrypting the output stream",
1986: EncryptStopOutput, 1, 0, 0 },
1987:
1988: { "status", "Display current status of authentication information",
1989: EncryptStatus, 0, 0, 0 },
1990: { "help", 0, EncryptHelp, 0, 0, 0 },
1991: { "?", "Print help information", EncryptHelp, 0, 0, 0 },
1992: { 0 },
1993: };
1994:
1995: static int
1996: EncryptHelp()
1997: {
1998: struct encryptlist *c;
1999:
2000: for (c = EncryptList; c->name; c++) {
2001: if (c->help) {
2002: if (*c->help)
2003: printf("%-15s %s\r\n", c->name, c->help);
2004: else
2005: printf("\r\n");
2006: }
2007: }
2008: return 0;
2009: }
2010:
2011: static int
2012: encrypt_cmd(int argc, char **argv)
2013: {
2014: struct encryptlist *c;
1.13 art 2015:
2016: if (argc < 2) {
2017: fprintf(stderr, "Need at least one argument for 'encrypt' command.\n");
2018: fprintf(stderr, "('encrypt ?' for help)\n");
2019: return 0;
2020: }
2021:
1.10 art 2022: c = (struct encryptlist *)
2023: genget(argv[1], (char **) EncryptList, sizeof(struct encryptlist));
2024: if (c == 0) {
2025: fprintf(stderr, "'%s': unknown argument ('encrypt ?' for help).\r\n",
2026: argv[1]);
2027: return 0;
2028: }
2029: if (Ambiguous(c)) {
2030: fprintf(stderr, "'%s': ambiguous argument ('encrypt ?' for help).\r\n",
2031: argv[1]);
2032: return 0;
2033: }
2034: argc -= 2;
2035: if (argc < c->minarg || argc > c->maxarg) {
2036: if (c->minarg == c->maxarg) {
2037: fprintf(stderr, "Need %s%d argument%s ",
2038: c->minarg < argc ? "only " : "", c->minarg,
2039: c->minarg == 1 ? "" : "s");
2040: } else {
2041: fprintf(stderr, "Need %s%d-%d arguments ",
2042: c->maxarg < argc ? "only " : "", c->minarg, c->maxarg);
2043: }
2044: fprintf(stderr, "to 'encrypt %s' command. 'encrypt ?' for help.\r\n",
2045: c->name);
2046: return 0;
2047: }
2048: if (c->needconnect && !connected) {
2049: if (!(argc && (isprefix(argv[2], "help") || isprefix(argv[2], "?")))) {
2050: printf("?Need to be connected first.\r\n");
2051: return 0;
2052: }
2053: }
2054: return ((*c->handler)(argc > 0 ? argv[2] : 0,
2055: argc > 1 ? argv[3] : 0,
2056: argc > 2 ? argv[4] : 0));
2057: }
2058: #endif
1.1 deraadt 2059:
2060: #if defined(unix) && defined(TN3270)
2061: static void
2062: filestuff(fd)
2063: int fd;
2064: {
2065: int res;
2066:
2067: #ifdef F_GETOWN
2068: setconnmode(0);
2069: res = fcntl(fd, F_GETOWN, 0);
2070: setcommandmode();
2071:
2072: if (res == -1) {
2073: perror("fcntl");
2074: return;
2075: }
1.10 art 2076: printf("\tOwner is %d.\r\n", res);
1.1 deraadt 2077: #endif
2078:
2079: setconnmode(0);
2080: res = fcntl(fd, F_GETFL, 0);
2081: setcommandmode();
2082:
2083: if (res == -1) {
2084: perror("fcntl");
2085: return;
2086: }
2087: #ifdef notdef
1.10 art 2088: printf("\tFlags are 0x%x: %s\r\n", res, decodeflags(res));
1.1 deraadt 2089: #endif
2090: }
2091: #endif /* defined(unix) && defined(TN3270) */
2092:
2093: /*
2094: * Print status about the connection.
2095: */
2096: /*ARGSUSED*/
1.15 art 2097: static int
1.1 deraadt 2098: status(argc, argv)
2099: int argc;
2100: char *argv[];
2101: {
2102: if (connected) {
1.10 art 2103: printf("Connected to %s.\r\n", hostname);
1.1 deraadt 2104: if ((argc < 2) || strcmp(argv[1], "notmuch")) {
2105: int mode = getconnmode();
2106:
2107: if (my_want_state_is_will(TELOPT_LINEMODE)) {
1.10 art 2108: printf("Operating with LINEMODE option\r\n");
2109: printf("%s line editing\r\n", (mode&MODE_EDIT) ? "Local" : "No");
2110: printf("%s catching of signals\r\n",
1.1 deraadt 2111: (mode&MODE_TRAPSIG) ? "Local" : "No");
2112: slcstate();
2113: #ifdef KLUDGELINEMODE
2114: } else if (kludgelinemode && my_want_state_is_dont(TELOPT_SGA)) {
1.10 art 2115: printf("Operating in obsolete linemode\r\n");
1.1 deraadt 2116: #endif
2117: } else {
1.10 art 2118: printf("Operating in single character mode\r\n");
1.1 deraadt 2119: if (localchars)
1.10 art 2120: printf("Catching signals locally\r\n");
1.1 deraadt 2121: }
1.10 art 2122: printf("%s character echo\r\n", (mode&MODE_ECHO) ? "Local" : "Remote");
1.1 deraadt 2123: if (my_want_state_is_will(TELOPT_LFLOW))
1.10 art 2124: printf("%s flow control\r\n", (mode&MODE_FLOW) ? "Local" : "No");
2125: #if defined(ENCRYPTION)
2126: encrypt_display();
2127: #endif
1.1 deraadt 2128: }
2129: } else {
1.10 art 2130: printf("No connection.\r\n");
1.1 deraadt 2131: }
2132: # if !defined(TN3270)
1.10 art 2133: printf("Escape character is '%s'.\r\n", control(escape));
1.1 deraadt 2134: (void) fflush(stdout);
2135: # else /* !defined(TN3270) */
2136: if ((!In3270) && ((argc < 2) || strcmp(argv[1], "notmuch"))) {
1.10 art 2137: printf("Escape character is '%s'.\r\n", control(escape));
1.1 deraadt 2138: }
2139: # if defined(unix)
2140: if ((argc >= 2) && !strcmp(argv[1], "everything")) {
1.10 art 2141: printf("SIGIO received %d time%s.\r\n",
1.1 deraadt 2142: sigiocount, (sigiocount == 1)? "":"s");
2143: if (In3270) {
1.42 mpech 2144: printf("Process ID %ld, process group %ld.\r\n",
2145: (long)getpid(), (long)getpgrp());
1.10 art 2146: printf("Terminal input:\r\n");
1.1 deraadt 2147: filestuff(tin);
1.10 art 2148: printf("Terminal output:\r\n");
1.1 deraadt 2149: filestuff(tout);
1.10 art 2150: printf("Network socket:\r\n");
1.1 deraadt 2151: filestuff(net);
2152: }
2153: }
2154: if (In3270 && transcom) {
1.10 art 2155: printf("Transparent mode command is '%s'.\r\n", transcom);
1.1 deraadt 2156: }
2157: # endif /* defined(unix) */
2158: (void) fflush(stdout);
2159: if (In3270) {
2160: return 0;
2161: }
2162: # endif /* defined(TN3270) */
1.10 art 2163: fflush(stdout);
1.1 deraadt 2164: return 1;
2165: }
2166:
2167: #ifdef SIGINFO
2168: /*
2169: * Function that gets called when SIGINFO is received.
2170: */
1.10 art 2171: void
1.1 deraadt 2172: ayt_status()
2173: {
2174: (void) call(status, "status", "notmuch", 0);
2175: }
2176: #endif
2177:
1.10 art 2178: static Command *getcmd(char *name);
2179:
2180: static void
2181: cmdrc(char *m1, char *m2)
2182: {
2183: static char rcname[128];
2184: Command *c;
2185: FILE *rcfile;
2186: int gotmachine = 0;
2187: int l1 = strlen(m1);
2188: int l2 = strlen(m2);
1.34 aaron 2189: char m1save[MAXHOSTNAMELEN];
1.10 art 2190:
2191: if (skiprc)
2192: return;
2193:
1.34 aaron 2194: strlcpy(m1save, m1, sizeof(m1save));
1.10 art 2195: m1 = m1save;
2196:
2197: if (rcname[0] == 0) {
2198: char *home = getenv("HOME");
2199:
1.29 millert 2200: if (home == NULL || *home == '\0')
2201: return;
1.10 art 2202: snprintf (rcname, sizeof(rcname), "%s/.telnetrc",
2203: home ? home : "");
2204: }
2205:
2206: if ((rcfile = fopen(rcname, "r")) == 0) {
2207: return;
2208: }
2209:
2210: for (;;) {
2211: if (fgets(line, sizeof(line), rcfile) == NULL)
2212: break;
2213: if (line[0] == 0)
2214: break;
2215: if (line[0] == '#')
2216: continue;
2217: if (gotmachine) {
2218: if (!isspace(line[0]))
2219: gotmachine = 0;
2220: }
2221: if (gotmachine == 0) {
2222: if (isspace(line[0]))
2223: continue;
2224: if (strncasecmp(line, m1, l1) == 0)
2225: strncpy(line, &line[l1], sizeof(line) - l1);
2226: else if (strncasecmp(line, m2, l2) == 0)
2227: strncpy(line, &line[l2], sizeof(line) - l2);
2228: else if (strncasecmp(line, "DEFAULT", 7) == 0)
2229: strncpy(line, &line[7], sizeof(line) - 7);
2230: else
2231: continue;
2232: if (line[0] != ' ' && line[0] != '\t' && line[0] != '\n')
2233: continue;
2234: gotmachine = 1;
2235: }
2236: makeargv();
2237: if (margv[0] == 0)
2238: continue;
2239: c = getcmd(margv[0]);
2240: if (Ambiguous(c)) {
2241: printf("?Ambiguous command: %s\r\n", margv[0]);
2242: continue;
2243: }
2244: if (c == 0) {
2245: printf("?Invalid command: %s\r\n", margv[0]);
2246: continue;
2247: }
2248: /*
2249: * This should never happen...
2250: */
2251: if (c->needconnect && !connected) {
2252: printf("?Need to be connected first for %s.\r\n", margv[0]);
2253: continue;
2254: }
2255: (*c->handler)(margc, margv);
2256: }
2257: fclose(rcfile);
2258: }
2259:
1.1 deraadt 2260:
2261: int
2262: tn(argc, argv)
2263: int argc;
2264: char *argv[];
2265: {
1.23 itojun 2266: struct addrinfo hints, *res, *res0;
2267: int error;
1.1 deraadt 2268: struct sockaddr_in sin;
2269: unsigned long temp;
2270: extern char *inet_ntoa();
2271: #if defined(IP_OPTIONS) && defined(IPPROTO_IP)
1.10 art 2272: char *srp = 0;
2273: int srlen;
1.1 deraadt 2274: #endif
1.5 niklas 2275: char *cmd, *hostp = 0, *portp = 0, *user = 0, *aliasp = 0;
1.31 itojun 2276: int retry;
2277: const int niflags = NI_NUMERICHOST;
1.1 deraadt 2278:
2279: /* clear the socket address prior to use */
1.3 niklas 2280: memset((char *)&sin, 0, sizeof(sin));
1.1 deraadt 2281:
2282: if (connected) {
1.10 art 2283: printf("?Already connected to %s\r\n", hostname);
1.1 deraadt 2284: return 0;
2285: }
2286: if (argc < 2) {
1.43 hin 2287: strlcpy(line, "open ", sizeof(line));
1.1 deraadt 2288: printf("(to) ");
2289: (void) fgets(&line[strlen(line)], sizeof(line) - strlen(line), stdin);
2290: makeargv();
2291: argc = margc;
2292: argv = margv;
2293: }
2294: cmd = *argv;
2295: --argc; ++argv;
2296: while (argc) {
1.3 niklas 2297: if (strcmp(*argv, "help") == 0 || isprefix(*argv, "?"))
1.1 deraadt 2298: goto usage;
2299: if (strcmp(*argv, "-l") == 0) {
2300: --argc; ++argv;
2301: if (argc == 0)
2302: goto usage;
1.14 art 2303: if ((user = strdup(*argv++)) == NULL)
2304: err(1, "strdup");
1.1 deraadt 2305: --argc;
2306: continue;
2307: }
1.5 niklas 2308: if (strcmp(*argv, "-b") == 0) {
2309: --argc; ++argv;
2310: if (argc == 0)
2311: goto usage;
2312: aliasp = *argv++;
2313: --argc;
2314: continue;
2315: }
1.1 deraadt 2316: if (strcmp(*argv, "-a") == 0) {
2317: --argc; ++argv;
2318: autologin = 1;
2319: continue;
2320: }
2321: if (hostp == 0) {
2322: hostp = *argv++;
2323: --argc;
2324: continue;
2325: }
2326: if (portp == 0) {
2327: portp = *argv++;
2328: --argc;
2329: continue;
2330: }
2331: usage:
1.10 art 2332: printf("usage: %s [-l user] [-a] host-name [port]\r\n", cmd);
1.1 deraadt 2333: return 0;
2334: }
2335: if (hostp == 0)
2336: goto usage;
2337:
2338: #if defined(IP_OPTIONS) && defined(IPPROTO_IP)
2339: if (hostp[0] == '@' || hostp[0] == '!') {
2340: if ((hostname = strrchr(hostp, ':')) == NULL)
2341: hostname = strrchr(hostp, '@');
2342: hostname++;
2343: srp = 0;
2344: temp = sourceroute(hostp, &srp, &srlen);
2345: if (temp == 0) {
2346: herror(srp);
2347: return 0;
2348: } else if (temp == -1) {
1.10 art 2349: printf("Bad source route option: %s\r\n", hostp);
1.1 deraadt 2350: return 0;
2351: } else {
1.10 art 2352: abort();
1.1 deraadt 2353: }
1.23 itojun 2354: } else
1.1 deraadt 2355: #endif
1.23 itojun 2356: {
2357: hostname = hostp;
2358: memset(&hints, 0, sizeof(hints));
1.46 otto 2359: hints.ai_family = family;
1.23 itojun 2360: hints.ai_socktype = SOCK_STREAM;
2361: hints.ai_flags = AI_CANONNAME;
2362: if (portp == NULL) {
2363: portp = "telnet";
1.38 itojun 2364: telnetport = 1;
1.23 itojun 2365: } else if (*portp == '-') {
2366: portp++;
2367: telnetport = 1;
1.38 itojun 2368: } else
2369: telnetport = 0;
1.28 millert 2370: h_errno = 0;
1.23 itojun 2371: error = getaddrinfo(hostp, portp, &hints, &res0);
2372: if (error) {
1.28 millert 2373: if (error == EAI_SERVICE)
2374: warnx("%s: bad port", portp);
2375: else
2376: warnx("%s: %s", hostp, gai_strerror(error));
2377: if (h_errno)
2378: herror(hostp);
1.23 itojun 2379: return 0;
2380: }
1.1 deraadt 2381: }
1.10 art 2382:
1.23 itojun 2383: net = -1;
2384: retry = 0;
2385: for (res = res0; res; res = res->ai_next) {
2386: if (1 /* retry */) {
1.31 itojun 2387: char hbuf[NI_MAXHOST];
1.23 itojun 2388:
1.31 itojun 2389: if (getnameinfo(res->ai_addr, res->ai_addrlen, hbuf, sizeof(hbuf),
2390: NULL, 0, niflags) != 0) {
1.43 hin 2391: strlcpy(hbuf, "(invalid)", sizeof(hbuf));
1.31 itojun 2392: }
1.23 itojun 2393: printf("Trying %s...\r\n", hbuf);
2394: }
2395: net = socket(res->ai_family, res->ai_socktype, res->ai_protocol);
2396: if (net < 0)
2397: continue;
1.51 claudio 2398:
1.54 ! phessler 2399: if (setsockopt(net, SOL_SOCKET, SO_RTABLE, &rtableid,
! 2400: sizeof(rtableid)) == -1)
! 2401: perror("setsockopt (SO_RTABLE)");
1.10 art 2402:
1.5 niklas 2403: if (aliasp) {
1.23 itojun 2404: struct addrinfo ahints, *ares;
2405:
2406: memset(&ahints, 0, sizeof(ahints));
1.46 otto 2407: ahints.ai_family = family;
1.23 itojun 2408: ahints.ai_socktype = SOCK_STREAM;
2409: ahints.ai_flags = AI_PASSIVE;
2410: error = getaddrinfo(aliasp, "0", &ahints, &ares);
2411: if (error) {
2412: warn("%s: %s", aliasp, gai_strerror(error));
2413: close(net);
1.49 otto 2414: net = -1;
1.23 itojun 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 */
1.49 otto 2420: net = -1;
1.23 itojun 2421: freeaddrinfo(ares);
2422: continue;
1.5 niklas 2423: }
1.23 itojun 2424: freeaddrinfo(ares);
2425: }
2426: #if defined(IP_OPTIONS) && defined(IPPROTO_IP)
2427: if (srp && res->ai_family == AF_INET
2428: && setsockopt(net, IPPROTO_IP, IP_OPTIONS, (char *)srp, srlen) < 0)
1.1 deraadt 2429: perror("setsockopt (IP_OPTIONS)");
2430: #endif
2431: #if defined(IPPROTO_IP) && defined(IP_TOS)
1.23 itojun 2432: if (res->ai_family == AF_INET) {
1.1 deraadt 2433: # if defined(HAS_GETTOS)
2434: struct tosent *tp;
2435: if (tos < 0 && (tp = gettosbyname("telnet", "tcp")))
2436: tos = tp->t_tos;
2437: # endif
2438: if (tos < 0)
1.3 niklas 2439: tos = IPTOS_LOWDELAY; /* Low Delay bit */
1.1 deraadt 2440: if (tos
2441: && (setsockopt(net, IPPROTO_IP, IP_TOS,
1.10 art 2442: (void *)&tos, sizeof(int)) < 0)
1.1 deraadt 2443: && (errno != ENOPROTOOPT))
2444: perror("telnet: setsockopt (IP_TOS) (ignored)");
2445: }
2446: #endif /* defined(IPPROTO_IP) && defined(IP_TOS) */
2447:
2448: if (debug && SetSockOpt(net, SOL_SOCKET, SO_DEBUG, 1) < 0) {
2449: perror("setsockopt (SO_DEBUG)");
2450: }
2451:
1.23 itojun 2452: if (connect(net, res->ai_addr, res->ai_addrlen) < 0) {
1.31 itojun 2453: char hbuf[NI_MAXHOST];
1.16 deraadt 2454:
1.31 itojun 2455: if (getnameinfo(res->ai_addr, res->ai_addrlen, hbuf, sizeof(hbuf),
2456: NULL, 0, niflags) != 0) {
1.43 hin 2457: strlcpy(hbuf, "(invalid)", sizeof(hbuf));
1.31 itojun 2458: }
1.25 itojun 2459: fprintf(stderr, "telnet: connect to address %s: %s\n", hbuf,
2460: strerror(errno));
1.23 itojun 2461:
2462: close(net);
2463: net = -1;
2464: retry++;
2465: continue;
1.1 deraadt 2466: }
1.23 itojun 2467:
1.1 deraadt 2468: connected++;
1.10 art 2469: #if defined(AUTHENTICATION) || defined(ENCRYPTION)
1.1 deraadt 2470: auth_encrypt_connect(connected);
2471: #endif /* defined(AUTHENTICATION) */
1.23 itojun 2472: break;
2473: }
2474: freeaddrinfo(res0);
2475: if (net < 0) {
2476: return 0;
2477: }
1.1 deraadt 2478: cmdrc(hostp, hostname);
2479: if (autologin && user == NULL) {
2480: struct passwd *pw;
2481:
2482: user = getenv("USER");
2483: if (user == NULL ||
1.15 art 2484: ((pw = getpwnam(user)) && pw->pw_uid != getuid())) {
2485: if ((pw = getpwuid(getuid())) != NULL)
1.1 deraadt 2486: user = pw->pw_name;
2487: else
2488: user = NULL;
2489: }
2490: }
2491: if (user) {
2492: env_define((unsigned char *)"USER", (unsigned char *)user);
2493: env_export((unsigned char *)"USER");
2494: }
2495: (void) call(status, "status", "notmuch", 0);
2496: if (setjmp(peerdied) == 0)
2497: telnet(user);
2498: (void) NetClose(net);
1.10 art 2499: ExitString("Connection closed by foreign host.\r\n",1);
1.1 deraadt 2500: /*NOTREACHED*/
1.10 art 2501: return 0;
1.1 deraadt 2502: }
2503:
2504: #define HELPINDENT (sizeof ("connect"))
2505:
2506: static char
2507: openhelp[] = "connect to a site",
2508: closehelp[] = "close current connection",
2509: logouthelp[] = "forcibly logout remote user and close the connection",
2510: quithelp[] = "exit telnet",
2511: statushelp[] = "print status information",
2512: helphelp[] = "print help information",
2513: sendhelp[] = "transmit special characters ('send ?' for more)",
2514: sethelp[] = "set operating parameters ('set ?' for more)",
2515: unsethelp[] = "unset operating parameters ('unset ?' for more)",
2516: togglestring[] ="toggle operating parameters ('toggle ?' for more)",
2517: slchelp[] = "change state of special charaters ('slc ?' for more)",
2518: displayhelp[] = "display operating parameters",
2519: #if defined(TN3270) && defined(unix)
2520: transcomhelp[] = "specify Unix command for transparent mode pipe",
2521: #endif /* defined(TN3270) && defined(unix) */
2522: #if defined(AUTHENTICATION)
2523: authhelp[] = "turn on (off) authentication ('auth ?' for more)",
2524: #endif
1.10 art 2525: #if defined(ENCRYPTION)
2526: encrypthelp[] = "turn on (off) encryption ('encrypt ?' for more)",
2527: #endif
1.1 deraadt 2528: zhelp[] = "suspend telnet",
1.21 deraadt 2529: #ifdef SKEY
2530: skeyhelp[] = "compute response to s/key challenge",
2531: #endif
1.1 deraadt 2532: shellhelp[] = "invoke a subshell",
2533: envhelp[] = "change environment variables ('environ ?' for more)",
2534: modestring[] = "try to enter line or character mode ('mode ?' for more)";
2535:
1.40 millert 2536: static int help(int, char**);
1.1 deraadt 2537:
2538: static Command cmdtab[] = {
2539: { "close", closehelp, bye, 1 },
2540: { "logout", logouthelp, logout, 1 },
2541: { "display", displayhelp, display, 0 },
2542: { "mode", modestring, modecmd, 0 },
2543: { "open", openhelp, tn, 0 },
2544: { "quit", quithelp, quit, 0 },
2545: { "send", sendhelp, sendcmd, 0 },
2546: { "set", sethelp, setcmd, 0 },
2547: { "unset", unsethelp, unsetcmd, 0 },
2548: { "status", statushelp, status, 0 },
2549: { "toggle", togglestring, toggle, 0 },
2550: { "slc", slchelp, slccmd, 0 },
2551: #if defined(TN3270) && defined(unix)
2552: { "transcom", transcomhelp, settranscom, 0 },
2553: #endif /* defined(TN3270) && defined(unix) */
2554: #if defined(AUTHENTICATION)
2555: { "auth", authhelp, auth_cmd, 0 },
2556: #endif
1.10 art 2557: #if defined(ENCRYPTION)
2558: { "encrypt", encrypthelp, encrypt_cmd, 0 },
2559: #endif
2560:
2561: { "z", zhelp, telnetsuspend, 0 },
1.1 deraadt 2562: #if defined(TN3270)
2563: { "!", shellhelp, shell, 1 },
2564: #else
2565: { "!", shellhelp, shell, 0 },
2566: #endif
2567: { "environ", envhelp, env_cmd, 0 },
2568: { "?", helphelp, help, 0 },
1.6 deraadt 2569: #if defined(SKEY)
1.21 deraadt 2570: { "skey", skeyhelp, skey_calc, 0 },
1.6 deraadt 2571: #endif
1.10 art 2572: { 0, 0, 0, 0 }
1.1 deraadt 2573: };
2574:
2575: static char crmodhelp[] = "deprecated command -- use 'toggle crmod' instead";
2576: static char escapehelp[] = "deprecated command -- use 'set escape' instead";
2577:
2578: static Command cmdtab2[] = {
2579: { "help", 0, help, 0 },
2580: { "escape", escapehelp, setescape, 0 },
2581: { "crmod", crmodhelp, togcrmod, 0 },
1.10 art 2582: { 0, 0, 0, 0 }
1.1 deraadt 2583: };
2584:
2585:
2586: /*
2587: * Call routine with argc, argv set from args (terminated by 0).
2588: */
2589:
2590: /*VARARGS1*/
1.10 art 2591: static int
2592: call(intrtn_t routine, ...)
1.1 deraadt 2593: {
2594: va_list ap;
2595: char *args[100];
2596: int argno = 0;
2597:
1.10 art 2598: va_start(ap, routine);
2599: while ((args[argno++] = va_arg(ap, char *)) != 0);
1.1 deraadt 2600: va_end(ap);
2601: return (*routine)(argno-1, args);
2602: }
2603:
2604:
2605: static Command *
2606: getcmd(name)
2607: char *name;
2608: {
2609: Command *cm;
2610:
1.10 art 2611: if ((cm = (Command *) genget(name, (char **) cmdtab, sizeof(Command))))
1.1 deraadt 2612: return cm;
2613: return (Command *) genget(name, (char **) cmdtab2, sizeof(Command));
2614: }
2615:
2616: void
2617: command(top, tbuf, cnt)
2618: int top;
2619: char *tbuf;
2620: int cnt;
2621: {
1.39 mpech 2622: Command *c;
1.1 deraadt 2623:
2624: setcommandmode();
2625: if (!top) {
2626: putchar('\n');
2627: #if defined(unix)
2628: } else {
2629: (void) signal(SIGINT, SIG_DFL);
2630: (void) signal(SIGQUIT, SIG_DFL);
2631: #endif /* defined(unix) */
2632: }
2633: for (;;) {
2634: if (rlogin == _POSIX_VDISABLE)
2635: printf("%s> ", prompt);
2636: if (tbuf) {
1.39 mpech 2637: char *cp;
1.1 deraadt 2638: cp = line;
2639: while (cnt > 0 && (*cp++ = *tbuf++) != '\n')
2640: cnt--;
2641: tbuf = 0;
2642: if (cp == line || *--cp != '\n' || cp == line)
2643: goto getline;
2644: *cp = '\0';
2645: if (rlogin == _POSIX_VDISABLE)
1.10 art 2646: printf("%s\r\n", line);
1.1 deraadt 2647: } else {
2648: getline:
2649: if (rlogin != _POSIX_VDISABLE)
2650: printf("%s> ", prompt);
2651: if (fgets(line, sizeof(line), stdin) == NULL) {
2652: if (feof(stdin) || ferror(stdin)) {
2653: (void) quit();
2654: /*NOTREACHED*/
2655: }
2656: break;
2657: }
2658: }
2659: if (line[0] == 0)
2660: break;
2661: makeargv();
2662: if (margv[0] == 0) {
2663: break;
2664: }
2665: c = getcmd(margv[0]);
2666: if (Ambiguous(c)) {
1.10 art 2667: printf("?Ambiguous command\r\n");
1.1 deraadt 2668: continue;
2669: }
2670: if (c == 0) {
1.10 art 2671: printf("?Invalid command\r\n");
1.1 deraadt 2672: continue;
2673: }
2674: if (c->needconnect && !connected) {
1.10 art 2675: printf("?Need to be connected first.\r\n");
1.1 deraadt 2676: continue;
2677: }
2678: if ((*c->handler)(margc, margv)) {
2679: break;
2680: }
2681: }
2682: if (!top) {
2683: if (!connected) {
2684: longjmp(toplevel, 1);
2685: /*NOTREACHED*/
2686: }
2687: #if defined(TN3270)
2688: if (shell_active == 0) {
2689: setconnmode(0);
2690: }
2691: #else /* defined(TN3270) */
2692: setconnmode(0);
2693: #endif /* defined(TN3270) */
2694: }
2695: }
2696:
2697: /*
2698: * Help command.
2699: */
1.15 art 2700: static int
1.1 deraadt 2701: help(argc, argv)
2702: int argc;
2703: char *argv[];
2704: {
1.39 mpech 2705: Command *c;
1.1 deraadt 2706:
2707: if (argc == 1) {
1.10 art 2708: printf("Commands may be abbreviated. Commands are:\r\n\r\n");
1.1 deraadt 2709: for (c = cmdtab; c->name; c++)
2710: if (c->help) {
1.37 deraadt 2711: printf("%-*s\t%s\r\n", (int)HELPINDENT, c->name,
1.1 deraadt 2712: c->help);
2713: }
2714: return 0;
2715: }
2716: while (--argc > 0) {
1.39 mpech 2717: char *arg;
1.1 deraadt 2718: arg = *++argv;
2719: c = getcmd(arg);
2720: if (Ambiguous(c))
1.10 art 2721: printf("?Ambiguous help command %s\r\n", arg);
1.1 deraadt 2722: else if (c == (Command *)0)
1.10 art 2723: printf("?Invalid help command %s\r\n", arg);
1.1 deraadt 2724: else
1.10 art 2725: printf("%s\r\n", c->help);
1.1 deraadt 2726: }
2727: return 0;
2728: }
2729:
2730: #if defined(IP_OPTIONS) && defined(IPPROTO_IP)
2731:
2732: /*
2733: * Source route is handed in as
2734: * [!]@hop1@hop2...[@|:]dst
2735: * If the leading ! is present, it is a
2736: * strict source route, otherwise it is
2737: * assmed to be a loose source route.
2738: *
2739: * We fill in the source route option as
2740: * hop1,hop2,hop3...dest
2741: * and return a pointer to hop1, which will
2742: * be the address to connect() to.
2743: *
2744: * Arguments:
2745: * arg: pointer to route list to decipher
2746: *
2747: * cpp: If *cpp is not equal to NULL, this is a
2748: * pointer to a pointer to a character array
2749: * that should be filled in with the option.
2750: *
2751: * lenp: pointer to an integer that contains the
2752: * length of *cpp if *cpp != NULL.
2753: *
2754: * Return values:
2755: *
2756: * Returns the address of the host to connect to. If the
2757: * return value is -1, there was a syntax error in the
2758: * option, either unknown characters, or too many hosts.
2759: * If the return value is 0, one of the hostnames in the
2760: * path is unknown, and *cpp is set to point to the bad
2761: * hostname.
2762: *
2763: * *cpp: If *cpp was equal to NULL, it will be filled
2764: * in with a pointer to our static area that has
2765: * the option filled in. This will be 32bit aligned.
1.3 niklas 2766: *
1.1 deraadt 2767: * *lenp: This will be filled in with how long the option
2768: * pointed to by *cpp is.
1.3 niklas 2769: *
1.1 deraadt 2770: */
2771: unsigned long
2772: sourceroute(arg, cpp, lenp)
2773: char *arg;
2774: char **cpp;
2775: int *lenp;
2776: {
2777: static char lsr[44];
2778: #ifdef sysV88
2779: static IOPTN ipopt;
2780: #endif
2781: char *cp, *cp2, *lsrp, *lsrep;
1.39 mpech 2782: int tmp;
1.1 deraadt 2783: struct in_addr sin_addr;
1.39 mpech 2784: struct hostent *host = 0;
2785: char c;
1.1 deraadt 2786:
2787: /*
2788: * Verify the arguments, and make sure we have
2789: * at least 7 bytes for the option.
2790: */
2791: if (cpp == NULL || lenp == NULL)
2792: return((unsigned long)-1);
2793: if (*cpp != NULL && *lenp < 7)
2794: return((unsigned long)-1);
2795: /*
2796: * Decide whether we have a buffer passed to us,
2797: * or if we need to use our own static buffer.
2798: */
2799: if (*cpp) {
2800: lsrp = *cpp;
2801: lsrep = lsrp + *lenp;
2802: } else {
2803: *cpp = lsrp = lsr;
2804: lsrep = lsrp + 44;
2805: }
2806:
2807: cp = arg;
2808:
2809: /*
2810: * Next, decide whether we have a loose source
2811: * route or a strict source route, and fill in
2812: * the begining of the option.
2813: */
2814: #ifndef sysV88
2815: if (*cp == '!') {
2816: cp++;
2817: *lsrp++ = IPOPT_SSRR;
2818: } else
2819: *lsrp++ = IPOPT_LSRR;
2820: #else
2821: if (*cp == '!') {
2822: cp++;
2823: ipopt.io_type = IPOPT_SSRR;
2824: } else
2825: ipopt.io_type = IPOPT_LSRR;
2826: #endif
2827:
2828: if (*cp != '@')
2829: return((unsigned long)-1);
2830:
2831: #ifndef sysV88
2832: lsrp++; /* skip over length, we'll fill it in later */
2833: *lsrp++ = 4;
2834: #endif
2835:
2836: cp++;
2837:
2838: sin_addr.s_addr = 0;
2839:
2840: for (c = 0;;) {
2841: if (c == ':')
2842: cp2 = 0;
1.10 art 2843: else for (cp2 = cp; (c = *cp2); cp2++) {
1.1 deraadt 2844: if (c == ',') {
2845: *cp2++ = '\0';
2846: if (*cp2 == '@')
2847: cp2++;
2848: } else if (c == '@') {
2849: *cp2++ = '\0';
2850: } else if (c == ':') {
2851: *cp2++ = '\0';
2852: } else
2853: continue;
2854: break;
2855: }
2856: if (!c)
2857: cp2 = 0;
2858:
1.10 art 2859: if ((tmp = inet_addr(cp)) != -1) {
1.1 deraadt 2860: sin_addr.s_addr = tmp;
1.10 art 2861: } else if ((host = gethostbyname(cp))) {
1.1 deraadt 2862: #if defined(h_addr)
1.3 niklas 2863: memmove((caddr_t)&sin_addr,
1.10 art 2864: host->h_addr_list[0],
2865: sizeof(sin_addr));
1.1 deraadt 2866: #else
1.10 art 2867: memmove((caddr_t)&sin_addr, host->h_addr,
2868: sizeof(sin_addr));
1.1 deraadt 2869: #endif
2870: } else {
2871: *cpp = cp;
2872: return(0);
2873: }
1.3 niklas 2874: memmove(lsrp, (char *)&sin_addr, 4);
1.1 deraadt 2875: lsrp += 4;
2876: if (cp2)
2877: cp = cp2;
2878: else
2879: break;
2880: /*
2881: * Check to make sure there is space for next address
2882: */
2883: if (lsrp + 4 > lsrep)
2884: return((unsigned long)-1);
2885: }
2886: #ifndef sysV88
2887: if ((*(*cpp+IPOPT_OLEN) = lsrp - *cpp) <= 7) {
2888: *cpp = 0;
2889: *lenp = 0;
2890: return((unsigned long)-1);
2891: }
2892: *lsrp++ = IPOPT_NOP; /* 32 bit word align it */
2893: *lenp = lsrp - *cpp;
2894: #else
2895: ipopt.io_len = lsrp - *cpp;
2896: if (ipopt.io_len <= 5) { /* Is 3 better ? */
2897: *cpp = 0;
2898: *lenp = 0;
2899: return((unsigned long)-1);
2900: }
2901: *lenp = sizeof(ipopt);
2902: *cpp = (char *) &ipopt;
2903: #endif
2904: return(sin_addr.s_addr);
2905: }
2906: #endif
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