Annotation of src/usr.bin/telnet/commands.c, Revision 1.57
1.57 ! guenther 1: /* $OpenBSD: commands.c,v 1.56 2014/07/19 23:50:38 guenther 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: int tos = -1;
37:
38: char *hostname;
39:
1.10 art 40: typedef int (*intrtn_t)(int, char**);
1.40 millert 41: static int call(intrtn_t, ...);
1.1 deraadt 42:
43: typedef struct {
44: char *name; /* command name */
45: char *help; /* help string (NULL for no help) */
46: int (*handler)(); /* routine which executes command */
47: int needconnect; /* Do we need to be connected to execute? */
48: } Command;
49:
50: static char line[256];
51: static char saveline[256];
52: static int margc;
53: static char *margv[20];
54:
1.6 deraadt 55: #if defined(SKEY)
56: #include <sys/wait.h>
57: #define PATH_SKEY "/usr/bin/skey"
58: int
59: skey_calc(argc, argv)
60: int argc;
61: char **argv;
62: {
63: int status;
64:
65: if(argc != 3) {
1.21 deraadt 66: printf("usage: %s sequence challenge\n", argv[0]);
1.15 art 67: return 0;
1.6 deraadt 68: }
69:
70: switch(fork()) {
71: case 0:
72: execv(PATH_SKEY, argv);
73: exit (1);
74: case -1:
1.15 art 75: err(1, "fork");
1.6 deraadt 76: break;
77: default:
78: (void) wait(&status);
79: if (WIFEXITED(status))
80: return (WEXITSTATUS(status));
81: return (0);
82: }
83: }
84: #endif
85:
86:
87:
1.1 deraadt 88: static void
89: makeargv()
90: {
1.39 mpech 91: char *cp, *cp2, c;
92: char **argp = margv;
1.1 deraadt 93:
94: margc = 0;
95: cp = line;
96: if (*cp == '!') { /* Special case shell escape */
1.43 hin 97: strlcpy(saveline, line, sizeof(saveline)); /* save for shell command */
1.1 deraadt 98: *argp++ = "!"; /* No room in string to get this */
99: margc++;
100: cp++;
101: }
1.10 art 102: while ((c = *cp)) {
1.39 mpech 103: int inquote = 0;
1.1 deraadt 104: while (isspace(c))
105: c = *++cp;
106: if (c == '\0')
107: break;
108: *argp++ = cp;
109: margc += 1;
110: for (cp2 = cp; c != '\0'; c = *++cp) {
111: if (inquote) {
112: if (c == inquote) {
113: inquote = 0;
114: continue;
115: }
116: } else {
117: if (c == '\\') {
118: if ((c = *++cp) == '\0')
119: break;
120: } else if (c == '"') {
121: inquote = '"';
122: continue;
123: } else if (c == '\'') {
124: inquote = '\'';
125: continue;
126: } else if (isspace(c))
127: break;
128: }
129: *cp2++ = c;
130: }
131: *cp2 = '\0';
132: if (c == '\0')
133: break;
134: cp++;
135: }
136: *argp++ = 0;
137: }
138:
139: /*
140: * Make a character string into a number.
141: *
142: * Todo: 1. Could take random integers (12, 0x12, 012, 0b1).
143: */
144:
1.15 art 145: static char
1.1 deraadt 146: special(s)
1.39 mpech 147: char *s;
1.1 deraadt 148: {
1.39 mpech 149: char c;
1.1 deraadt 150: char b;
151:
152: switch (*s) {
153: case '^':
154: b = *++s;
155: if (b == '?') {
156: c = b | 0x40; /* DEL */
157: } else {
158: c = b & 0x1f;
159: }
160: break;
161: default:
162: c = *s;
163: break;
164: }
165: return c;
166: }
167:
168: /*
169: * Construct a control character sequence
170: * for a special character.
171: */
172: static char *
173: control(c)
1.39 mpech 174: cc_t c;
1.1 deraadt 175: {
176: static char buf[5];
177: /*
178: * The only way I could get the Sun 3.5 compiler
179: * to shut up about
180: * if ((unsigned int)c >= 0x80)
181: * was to assign "c" to an unsigned int variable...
182: * Arggg....
183: */
1.39 mpech 184: unsigned int uic = (unsigned int)c;
1.1 deraadt 185:
186: if (uic == 0x7f)
187: return ("^?");
188: if (c == (cc_t)_POSIX_VDISABLE) {
189: return "off";
190: }
191: if (uic >= 0x80) {
192: buf[0] = '\\';
193: buf[1] = ((c>>6)&07) + '0';
194: buf[2] = ((c>>3)&07) + '0';
195: buf[3] = (c&07) + '0';
196: buf[4] = 0;
197: } else if (uic >= 0x20) {
198: buf[0] = c;
199: buf[1] = 0;
200: } else {
201: buf[0] = '^';
202: buf[1] = '@'+c;
203: buf[2] = 0;
204: }
205: return (buf);
206: }
207:
208:
209:
210: /*
211: * The following are data structures and routines for
212: * the "send" command.
213: *
214: */
1.3 niklas 215:
1.1 deraadt 216: struct sendlist {
217: char *name; /* How user refers to it (case independent) */
218: char *help; /* Help information (0 ==> no help) */
219: int needconnect; /* Need to be connected */
220: int narg; /* Number of arguments */
221: int (*handler)(); /* Routine to perform (for special ops) */
222: int nbyte; /* Number of bytes to send this command */
223: int what; /* Character to be sent (<0 ==> special) */
224: };
225:
226:
227: static int
1.41 millert 228: send_esc(void),
229: send_help(void),
230: send_docmd(char *),
231: send_dontcmd(char *),
232: send_willcmd(char *),
233: send_wontcmd(char *);
1.1 deraadt 234:
235: static struct sendlist Sendlist[] = {
236: { "ao", "Send Telnet Abort output", 1, 0, 0, 2, AO },
237: { "ayt", "Send Telnet 'Are You There'", 1, 0, 0, 2, AYT },
238: { "brk", "Send Telnet Break", 1, 0, 0, 2, BREAK },
239: { "break", 0, 1, 0, 0, 2, BREAK },
240: { "ec", "Send Telnet Erase Character", 1, 0, 0, 2, EC },
241: { "el", "Send Telnet Erase Line", 1, 0, 0, 2, EL },
242: { "escape", "Send current escape character", 1, 0, send_esc, 1, 0 },
243: { "ga", "Send Telnet 'Go Ahead' sequence", 1, 0, 0, 2, GA },
244: { "ip", "Send Telnet Interrupt Process", 1, 0, 0, 2, IP },
245: { "intp", 0, 1, 0, 0, 2, IP },
246: { "interrupt", 0, 1, 0, 0, 2, IP },
247: { "intr", 0, 1, 0, 0, 2, IP },
248: { "nop", "Send Telnet 'No operation'", 1, 0, 0, 2, NOP },
249: { "eor", "Send Telnet 'End of Record'", 1, 0, 0, 2, EOR },
250: { "abort", "Send Telnet 'Abort Process'", 1, 0, 0, 2, ABORT },
251: { "susp", "Send Telnet 'Suspend Process'", 1, 0, 0, 2, SUSP },
252: { "eof", "Send Telnet End of File Character", 1, 0, 0, 2, xEOF },
253: { "synch", "Perform Telnet 'Synch operation'", 1, 0, dosynch, 2, 0 },
254: { "getstatus", "Send request for STATUS", 1, 0, get_status, 6, 0 },
255: { "?", "Display send options", 0, 0, send_help, 0, 0 },
256: { "help", 0, 0, 0, send_help, 0, 0 },
257: { "do", 0, 0, 1, send_docmd, 3, 0 },
258: { "dont", 0, 0, 1, send_dontcmd, 3, 0 },
259: { "will", 0, 0, 1, send_willcmd, 3, 0 },
260: { "wont", 0, 0, 1, send_wontcmd, 3, 0 },
261: { 0 }
262: };
263:
264: #define GETSEND(name) ((struct sendlist *) genget(name, (char **) Sendlist, \
265: sizeof(struct sendlist)))
266:
267: static int
268: sendcmd(argc, argv)
269: int argc;
270: char **argv;
271: {
272: int count; /* how many bytes we are going to need to send */
273: int i;
274: struct sendlist *s; /* pointer to current command */
275: int success = 0;
276: int needconnect = 0;
277:
278: if (argc < 2) {
1.10 art 279: printf("need at least one argument for 'send' command\r\n");
280: printf("'send ?' for help\r\n");
1.1 deraadt 281: return 0;
282: }
283: /*
284: * First, validate all the send arguments.
285: * In addition, we see how much space we are going to need, and
286: * whether or not we will be doing a "SYNCH" operation (which
287: * flushes the network queue).
288: */
289: count = 0;
290: for (i = 1; i < argc; i++) {
291: s = GETSEND(argv[i]);
292: if (s == 0) {
1.10 art 293: printf("Unknown send argument '%s'\r\n'send ?' for help.\r\n",
1.1 deraadt 294: argv[i]);
295: return 0;
296: } else if (Ambiguous(s)) {
1.10 art 297: printf("Ambiguous send argument '%s'\r\n'send ?' for help.\r\n",
1.1 deraadt 298: argv[i]);
299: return 0;
300: }
301: if (i + s->narg >= argc) {
302: fprintf(stderr,
1.10 art 303: "Need %d argument%s to 'send %s' command. 'send %s ?' for help.\r\n",
1.1 deraadt 304: s->narg, s->narg == 1 ? "" : "s", s->name, s->name);
305: return 0;
306: }
307: count += s->nbyte;
308: if (s->handler == send_help) {
309: send_help();
310: return 0;
311: }
312:
313: i += s->narg;
314: needconnect += s->needconnect;
315: }
316: if (!connected && needconnect) {
1.10 art 317: printf("?Need to be connected first.\r\n");
318: printf("'send ?' for help\r\n");
1.1 deraadt 319: return 0;
320: }
321: /* Now, do we have enough room? */
322: if (NETROOM() < count) {
1.10 art 323: printf("There is not enough room in the buffer TO the network\r\n");
324: printf("to process your request. Nothing will be done.\r\n");
325: printf("('send synch' will throw away most data in the network\r\n");
326: printf("buffer, if this might help.)\r\n");
1.1 deraadt 327: return 0;
328: }
329: /* OK, they are all OK, now go through again and actually send */
330: count = 0;
331: for (i = 1; i < argc; i++) {
332: if ((s = GETSEND(argv[i])) == 0) {
1.10 art 333: fprintf(stderr, "Telnet 'send' error - argument disappeared!\r\n");
1.1 deraadt 334: (void) quit();
335: /*NOTREACHED*/
336: }
337: if (s->handler) {
338: count++;
339: success += (*s->handler)((s->narg > 0) ? argv[i+1] : 0,
340: (s->narg > 1) ? argv[i+2] : 0);
341: i += s->narg;
342: } else {
343: NET2ADD(IAC, s->what);
344: printoption("SENT", IAC, s->what);
345: }
346: }
347: return (count == success);
348: }
349:
1.10 art 350: static int
351: send_tncmd(void (*func)(), char *cmd, char *name);
352:
1.1 deraadt 353: static int
354: send_esc()
355: {
356: NETADD(escape);
357: return 1;
358: }
359:
360: static int
361: send_docmd(name)
362: char *name;
363: {
364: return(send_tncmd(send_do, "do", name));
365: }
366:
367: static int
368: send_dontcmd(name)
369: char *name;
370: {
371: return(send_tncmd(send_dont, "dont", name));
372: }
373: static int
374: send_willcmd(name)
375: char *name;
376: {
377: return(send_tncmd(send_will, "will", name));
378: }
379: static int
380: send_wontcmd(name)
381: char *name;
382: {
383: return(send_tncmd(send_wont, "wont", name));
384: }
385:
386: int
387: send_tncmd(func, cmd, name)
388: void (*func)();
389: char *cmd, *name;
390: {
391: char **cpp;
392: extern char *telopts[];
1.39 mpech 393: int val = 0;
1.1 deraadt 394:
1.10 art 395: if (isprefix(name, "help") || isprefix(name, "?")) {
1.39 mpech 396: int col, len;
1.1 deraadt 397:
1.10 art 398: printf("Usage: send %s <value|option>\r\n", cmd);
399: printf("\"value\" must be from 0 to 255\r\n");
400: printf("Valid options are:\r\n\t");
1.1 deraadt 401:
402: col = 8;
403: for (cpp = telopts; *cpp; cpp++) {
404: len = strlen(*cpp) + 3;
405: if (col + len > 65) {
1.10 art 406: printf("\r\n\t");
1.1 deraadt 407: col = 8;
408: }
409: printf(" \"%s\"", *cpp);
410: col += len;
411: }
1.10 art 412: printf("\r\n");
1.1 deraadt 413: return 0;
414: }
415: cpp = (char **)genget(name, telopts, sizeof(char *));
416: if (Ambiguous(cpp)) {
1.10 art 417: fprintf(stderr,"'%s': ambiguous argument ('send %s ?' for help).\r\n",
1.1 deraadt 418: name, cmd);
419: return 0;
420: }
421: if (cpp) {
422: val = cpp - telopts;
423: } else {
1.39 mpech 424: char *cp = name;
1.1 deraadt 425:
426: while (*cp >= '0' && *cp <= '9') {
427: val *= 10;
428: val += *cp - '0';
429: cp++;
430: }
431: if (*cp != 0) {
1.10 art 432: fprintf(stderr, "'%s': unknown argument ('send %s ?' for help).\r\n",
1.1 deraadt 433: name, cmd);
434: return 0;
435: } else if (val < 0 || val > 255) {
1.10 art 436: fprintf(stderr, "'%s': bad value ('send %s ?' for help).\r\n",
1.1 deraadt 437: name, cmd);
438: return 0;
439: }
440: }
441: if (!connected) {
1.10 art 442: printf("?Need to be connected first.\r\n");
1.1 deraadt 443: return 0;
444: }
445: (*func)(val, 1);
446: return 1;
447: }
448:
449: static int
450: send_help()
451: {
452: struct sendlist *s; /* pointer to current command */
453: for (s = Sendlist; s->name; s++) {
454: if (s->help)
1.10 art 455: printf("%-15s %s\r\n", s->name, s->help);
1.1 deraadt 456: }
457: return(0);
458: }
459:
460: /*
461: * The following are the routines and data structures referred
462: * to by the arguments to the "toggle" command.
463: */
464:
465: static int
466: lclchars()
467: {
468: donelclchars = 1;
469: return 1;
470: }
471:
472: static int
473: togdebug()
474: {
475: if (net > 0 &&
1.56 guenther 476: (setsockopt(net, SOL_SOCKET, SO_DEBUG, &debug, sizeof(debug))) == -1) {
1.1 deraadt 477: perror("setsockopt (SO_DEBUG)");
478: }
479: return 1;
480: }
481:
482:
483: static int
484: togcrlf()
485: {
486: if (crlf) {
1.10 art 487: printf("Will send carriage returns as telnet <CR><LF>.\r\n");
1.1 deraadt 488: } else {
1.10 art 489: printf("Will send carriage returns as telnet <CR><NUL>.\r\n");
1.1 deraadt 490: }
491: return 1;
492: }
493:
494: int binmode;
495:
496: static int
497: togbinary(val)
498: int val;
499: {
500: donebinarytoggle = 1;
501:
502: if (val >= 0) {
503: binmode = val;
504: } else {
505: if (my_want_state_is_will(TELOPT_BINARY) &&
506: my_want_state_is_do(TELOPT_BINARY)) {
507: binmode = 1;
508: } else if (my_want_state_is_wont(TELOPT_BINARY) &&
509: my_want_state_is_dont(TELOPT_BINARY)) {
510: binmode = 0;
511: }
512: val = binmode ? 0 : 1;
513: }
514:
515: if (val == 1) {
516: if (my_want_state_is_will(TELOPT_BINARY) &&
517: my_want_state_is_do(TELOPT_BINARY)) {
1.10 art 518: printf("Already operating in binary mode with remote host.\r\n");
1.1 deraadt 519: } else {
1.10 art 520: printf("Negotiating binary mode with remote host.\r\n");
1.1 deraadt 521: tel_enter_binary(3);
522: }
523: } else {
524: if (my_want_state_is_wont(TELOPT_BINARY) &&
525: my_want_state_is_dont(TELOPT_BINARY)) {
1.10 art 526: printf("Already in network ascii mode with remote host.\r\n");
1.1 deraadt 527: } else {
1.10 art 528: printf("Negotiating network ascii mode with remote host.\r\n");
1.1 deraadt 529: tel_leave_binary(3);
530: }
531: }
532: return 1;
533: }
534:
535: static int
536: togrbinary(val)
537: int val;
538: {
539: donebinarytoggle = 1;
540:
541: if (val == -1)
542: val = my_want_state_is_do(TELOPT_BINARY) ? 0 : 1;
543:
544: if (val == 1) {
545: if (my_want_state_is_do(TELOPT_BINARY)) {
1.10 art 546: printf("Already receiving in binary mode.\r\n");
1.1 deraadt 547: } else {
1.10 art 548: printf("Negotiating binary mode on input.\r\n");
1.1 deraadt 549: tel_enter_binary(1);
550: }
551: } else {
552: if (my_want_state_is_dont(TELOPT_BINARY)) {
1.10 art 553: printf("Already receiving in network ascii mode.\r\n");
1.1 deraadt 554: } else {
1.10 art 555: printf("Negotiating network ascii mode on input.\r\n");
1.1 deraadt 556: tel_leave_binary(1);
557: }
558: }
559: return 1;
560: }
561:
562: static int
563: togxbinary(val)
564: int val;
565: {
566: donebinarytoggle = 1;
567:
568: if (val == -1)
569: val = my_want_state_is_will(TELOPT_BINARY) ? 0 : 1;
570:
571: if (val == 1) {
572: if (my_want_state_is_will(TELOPT_BINARY)) {
1.10 art 573: printf("Already transmitting in binary mode.\r\n");
1.1 deraadt 574: } else {
1.10 art 575: printf("Negotiating binary mode on output.\r\n");
1.1 deraadt 576: tel_enter_binary(2);
577: }
578: } else {
579: if (my_want_state_is_wont(TELOPT_BINARY)) {
1.10 art 580: printf("Already transmitting in network ascii mode.\r\n");
1.1 deraadt 581: } else {
1.10 art 582: printf("Negotiating network ascii mode on output.\r\n");
1.1 deraadt 583: tel_leave_binary(2);
584: }
585: }
586: return 1;
587: }
588:
589:
1.41 millert 590: static int togglehelp(void);
1.1 deraadt 591:
592: struct togglelist {
593: char *name; /* name of toggle */
594: char *help; /* help message */
595: int (*handler)(); /* routine to do actual setting */
596: int *variable;
597: char *actionexplanation;
1.8 robin 598: int needconnect; /* Need to be connected */
1.1 deraadt 599: };
600:
601: static struct togglelist Togglelist[] = {
602: { "autoflush",
603: "flushing of output when sending interrupt characters",
604: 0,
605: &autoflush,
1.10 art 606: "flush output when sending interrupt characters" },
1.1 deraadt 607: { "autosynch",
608: "automatic sending of interrupt characters in urgent mode",
609: 0,
610: &autosynch,
1.10 art 611: "send interrupt characters in urgent mode" },
1.1 deraadt 612: { "autologin",
1.57 ! guenther 613: "automatic sending of login name",
1.1 deraadt 614: 0,
615: &autologin,
1.57 ! guenther 616: "send login name" },
1.1 deraadt 617: { "skiprc",
618: "don't read ~/.telnetrc file",
619: 0,
620: &skiprc,
1.10 art 621: "skip reading of ~/.telnetrc file" },
1.1 deraadt 622: { "binary",
623: "sending and receiving of binary data",
624: togbinary,
625: 0,
1.10 art 626: 0 },
1.1 deraadt 627: { "inbinary",
628: "receiving of binary data",
629: togrbinary,
630: 0,
1.10 art 631: 0 },
1.1 deraadt 632: { "outbinary",
633: "sending of binary data",
634: togxbinary,
635: 0,
1.10 art 636: 0 },
1.1 deraadt 637: { "crlf",
638: "sending carriage returns as telnet <CR><LF>",
639: togcrlf,
640: &crlf,
1.10 art 641: 0 },
1.1 deraadt 642: { "crmod",
643: "mapping of received carriage returns",
644: 0,
645: &crmod,
1.10 art 646: "map carriage return on output" },
1.1 deraadt 647: { "localchars",
648: "local recognition of certain control characters",
649: lclchars,
650: &localchars,
1.10 art 651: "recognize certain control characters" },
1.8 robin 652: { " ", "", 0, 0 }, /* empty line */
1.1 deraadt 653: { "debug",
654: "debugging",
655: togdebug,
656: &debug,
1.10 art 657: "turn on socket level debugging" },
1.1 deraadt 658: { "netdata",
659: "printing of hexadecimal network data (debugging)",
660: 0,
661: &netdata,
1.10 art 662: "print hexadecimal representation of network traffic" },
1.1 deraadt 663: { "prettydump",
664: "output of \"netdata\" to user readable format (debugging)",
665: 0,
666: &prettydump,
1.10 art 667: "print user readable output for \"netdata\"" },
1.1 deraadt 668: { "options",
669: "viewing of options processing (debugging)",
670: 0,
671: &showoptions,
1.10 art 672: "show option processing" },
1.1 deraadt 673: { "termdata",
674: "(debugging) toggle printing of hexadecimal terminal data",
675: 0,
676: &termdata,
1.10 art 677: "print hexadecimal representation of terminal traffic" },
1.1 deraadt 678: { "?",
679: 0,
1.10 art 680: togglehelp },
1.1 deraadt 681: { "help",
682: 0,
1.10 art 683: togglehelp },
1.1 deraadt 684: { 0 }
685: };
686:
687: static int
688: togglehelp()
689: {
690: struct togglelist *c;
691:
692: for (c = Togglelist; c->name; c++) {
693: if (c->help) {
694: if (*c->help)
1.10 art 695: printf("%-15s toggle %s\r\n", c->name, c->help);
1.1 deraadt 696: else
1.10 art 697: printf("\r\n");
1.1 deraadt 698: }
699: }
1.10 art 700: printf("\r\n");
701: printf("%-15s %s\r\n", "?", "display help information");
1.1 deraadt 702: return 0;
703: }
704:
705: static void
706: settogglehelp(set)
707: int set;
708: {
709: struct togglelist *c;
710:
711: for (c = Togglelist; c->name; c++) {
712: if (c->help) {
713: if (*c->help)
1.10 art 714: printf("%-15s %s %s\r\n", c->name, set ? "enable" : "disable",
1.1 deraadt 715: c->help);
716: else
1.10 art 717: printf("\r\n");
1.1 deraadt 718: }
719: }
720: }
721:
722: #define GETTOGGLE(name) (struct togglelist *) \
723: genget(name, (char **) Togglelist, sizeof(struct togglelist))
724:
725: static int
726: toggle(argc, argv)
727: int argc;
728: char *argv[];
729: {
730: int retval = 1;
731: char *name;
732: struct togglelist *c;
733:
734: if (argc < 2) {
735: fprintf(stderr,
1.10 art 736: "Need an argument to 'toggle' command. 'toggle ?' for help.\r\n");
1.1 deraadt 737: return 0;
738: }
739: argc--;
740: argv++;
741: while (argc--) {
742: name = *argv++;
743: c = GETTOGGLE(name);
744: if (Ambiguous(c)) {
1.10 art 745: fprintf(stderr, "'%s': ambiguous argument ('toggle ?' for help).\r\n",
1.1 deraadt 746: name);
747: return 0;
748: } else if (c == 0) {
1.10 art 749: fprintf(stderr, "'%s': unknown argument ('toggle ?' for help).\r\n",
1.1 deraadt 750: name);
751: return 0;
1.8 robin 752: } else if (!connected && c->needconnect) {
1.10 art 753: printf("?Need to be connected first.\r\n");
754: printf("'send ?' for help\r\n");
1.8 robin 755: return 0;
1.1 deraadt 756: } else {
757: if (c->variable) {
758: *c->variable = !*c->variable; /* invert it */
759: if (c->actionexplanation) {
1.10 art 760: printf("%s %s.\r\n", *c->variable? "Will" : "Won't",
1.1 deraadt 761: c->actionexplanation);
762: }
763: }
764: if (c->handler) {
765: retval &= (*c->handler)(-1);
766: }
767: }
768: }
769: return retval;
770: }
771:
772: /*
773: * The following perform the "set" command.
774: */
775:
1.10 art 776: struct termios new_tc = { 0 };
1.1 deraadt 777:
778: struct setlist {
779: char *name; /* name */
780: char *help; /* help information */
781: void (*handler)();
782: cc_t *charp; /* where it is located at */
783: };
784:
785: static struct setlist Setlist[] = {
786: #ifdef KLUDGELINEMODE
787: { "echo", "character to toggle local echoing on/off", 0, &echoc },
788: #endif
789: { "escape", "character to escape back to telnet command mode", 0, &escape },
790: { "rlogin", "rlogin escape character", 0, &rlogin },
791: { "tracefile", "file to write trace information to", SetNetTrace, (cc_t *)NetTraceFile},
792: { " ", "" },
793: { " ", "The following need 'localchars' to be toggled true", 0, 0 },
1.10 art 794: { "flushoutput", "character to cause an Abort Output", 0, &termFlushChar },
795: { "interrupt", "character to cause an Interrupt Process", 0, &termIntChar },
796: { "quit", "character to cause an Abort process", 0, &termQuitChar },
797: { "eof", "character to cause an EOF ", 0, &termEofChar },
1.1 deraadt 798: { " ", "" },
799: { " ", "The following are for local editing in linemode", 0, 0 },
1.10 art 800: { "erase", "character to use to erase a character", 0, &termEraseChar },
801: { "kill", "character to use to erase a line", 0, &termKillChar },
802: { "lnext", "character to use for literal next", 0, &termLiteralNextChar },
803: { "susp", "character to cause a Suspend Process", 0, &termSuspChar },
804: { "reprint", "character to use for line reprint", 0, &termRprntChar },
805: { "worderase", "character to use to erase a word", 0, &termWerasChar },
806: { "start", "character to use for XON", 0, &termStartChar },
807: { "stop", "character to use for XOFF", 0, &termStopChar },
808: { "forw1", "alternate end of line character", 0, &termForw1Char },
809: { "forw2", "alternate end of line character", 0, &termForw2Char },
810: { "ayt", "alternate AYT character", 0, &termAytChar },
1.1 deraadt 811: { 0 }
812: };
813:
814: static struct setlist *
815: getset(name)
816: char *name;
817: {
818: return (struct setlist *)
819: genget(name, (char **) Setlist, sizeof(struct setlist));
820: }
821:
822: void
823: set_escape_char(s)
824: char *s;
825: {
826: if (rlogin != _POSIX_VDISABLE) {
827: rlogin = (s && *s) ? special(s) : _POSIX_VDISABLE;
1.10 art 828: printf("Telnet rlogin escape character is '%s'.\r\n",
1.1 deraadt 829: control(rlogin));
830: } else {
831: escape = (s && *s) ? special(s) : _POSIX_VDISABLE;
1.10 art 832: printf("Telnet escape character is '%s'.\r\n", control(escape));
1.1 deraadt 833: }
834: }
835:
836: static int
837: setcmd(argc, argv)
838: int argc;
839: char *argv[];
840: {
841: int value;
842: struct setlist *ct;
843: struct togglelist *c;
844:
845: if (argc < 2 || argc > 3) {
1.10 art 846: printf("Format is 'set Name Value'\r\n'set ?' for help.\r\n");
1.1 deraadt 847: return 0;
848: }
849: if ((argc == 2) && (isprefix(argv[1], "?") || isprefix(argv[1], "help"))) {
850: for (ct = Setlist; ct->name; ct++)
1.10 art 851: printf("%-15s %s\r\n", ct->name, ct->help);
852: printf("\r\n");
1.1 deraadt 853: settogglehelp(1);
1.10 art 854: printf("%-15s %s\r\n", "?", "display help information");
1.1 deraadt 855: return 0;
856: }
857:
858: ct = getset(argv[1]);
859: if (ct == 0) {
860: c = GETTOGGLE(argv[1]);
861: if (c == 0) {
1.10 art 862: fprintf(stderr, "'%s': unknown argument ('set ?' for help).\r\n",
1.1 deraadt 863: argv[1]);
864: return 0;
865: } else if (Ambiguous(c)) {
1.10 art 866: fprintf(stderr, "'%s': ambiguous argument ('set ?' for help).\r\n",
1.1 deraadt 867: argv[1]);
868: return 0;
1.8 robin 869: } else if (!connected && c->needconnect) {
1.10 art 870: printf("?Need to be connected first.\r\n");
871: printf("'send ?' for help\r\n");
1.8 robin 872: return 0;
1.1 deraadt 873: }
1.8 robin 874:
1.1 deraadt 875: if (c->variable) {
876: if ((argc == 2) || (strcmp("on", argv[2]) == 0))
877: *c->variable = 1;
878: else if (strcmp("off", argv[2]) == 0)
879: *c->variable = 0;
880: else {
1.10 art 881: printf("Format is 'set togglename [on|off]'\r\n'set ?' for help.\r\n");
1.1 deraadt 882: return 0;
883: }
884: if (c->actionexplanation) {
1.10 art 885: printf("%s %s.\r\n", *c->variable? "Will" : "Won't",
1.1 deraadt 886: c->actionexplanation);
887: }
888: }
889: if (c->handler)
890: (*c->handler)(1);
891: } else if (argc != 3) {
1.10 art 892: printf("Format is 'set Name Value'\r\n'set ?' for help.\r\n");
1.1 deraadt 893: return 0;
894: } else if (Ambiguous(ct)) {
1.10 art 895: fprintf(stderr, "'%s': ambiguous argument ('set ?' for help).\r\n",
1.1 deraadt 896: argv[1]);
897: return 0;
898: } else if (ct->handler) {
899: (*ct->handler)(argv[2]);
1.10 art 900: printf("%s set to \"%s\".\r\n", ct->name, (char *)ct->charp);
1.1 deraadt 901: } else {
902: if (strcmp("off", argv[2])) {
903: value = special(argv[2]);
904: } else {
905: value = _POSIX_VDISABLE;
906: }
907: *(ct->charp) = (cc_t)value;
1.10 art 908: printf("%s character is '%s'.\r\n", ct->name, control(*(ct->charp)));
1.1 deraadt 909: }
910: slc_check();
911: return 1;
912: }
913:
914: static int
915: unsetcmd(argc, argv)
916: int argc;
917: char *argv[];
918: {
919: struct setlist *ct;
920: struct togglelist *c;
1.39 mpech 921: char *name;
1.1 deraadt 922:
923: if (argc < 2) {
924: fprintf(stderr,
1.10 art 925: "Need an argument to 'unset' command. 'unset ?' for help.\r\n");
1.1 deraadt 926: return 0;
927: }
928: if (isprefix(argv[1], "?") || isprefix(argv[1], "help")) {
929: for (ct = Setlist; ct->name; ct++)
1.10 art 930: printf("%-15s %s\r\n", ct->name, ct->help);
931: printf("\r\n");
1.1 deraadt 932: settogglehelp(0);
1.10 art 933: printf("%-15s %s\r\n", "?", "display help information");
1.1 deraadt 934: return 0;
935: }
936:
937: argc--;
938: argv++;
939: while (argc--) {
940: name = *argv++;
941: ct = getset(name);
942: if (ct == 0) {
943: c = GETTOGGLE(name);
944: if (c == 0) {
1.10 art 945: fprintf(stderr, "'%s': unknown argument ('unset ?' for help).\r\n",
1.1 deraadt 946: name);
947: return 0;
948: } else if (Ambiguous(c)) {
1.10 art 949: fprintf(stderr, "'%s': ambiguous argument ('unset ?' for help).\r\n",
1.1 deraadt 950: name);
951: return 0;
952: }
953: if (c->variable) {
954: *c->variable = 0;
955: if (c->actionexplanation) {
1.10 art 956: printf("%s %s.\r\n", *c->variable? "Will" : "Won't",
1.1 deraadt 957: c->actionexplanation);
958: }
959: }
960: if (c->handler)
961: (*c->handler)(0);
962: } else if (Ambiguous(ct)) {
1.10 art 963: fprintf(stderr, "'%s': ambiguous argument ('unset ?' for help).\r\n",
1.1 deraadt 964: name);
965: return 0;
966: } else if (ct->handler) {
967: (*ct->handler)(0);
1.10 art 968: printf("%s reset to \"%s\".\r\n", ct->name, (char *)ct->charp);
1.1 deraadt 969: } else {
970: *(ct->charp) = _POSIX_VDISABLE;
1.10 art 971: printf("%s character is '%s'.\r\n", ct->name, control(*(ct->charp)));
1.1 deraadt 972: }
973: }
974: return 1;
975: }
976:
977: /*
978: * The following are the data structures and routines for the
979: * 'mode' command.
980: */
981: #ifdef KLUDGELINEMODE
982: extern int kludgelinemode;
983:
984: static int
985: dokludgemode()
986: {
987: kludgelinemode = 1;
988: send_wont(TELOPT_LINEMODE, 1);
989: send_dont(TELOPT_SGA, 1);
990: send_dont(TELOPT_ECHO, 1);
1.10 art 991: return 1;
1.1 deraadt 992: }
993: #endif
994:
995: static int
996: dolinemode()
997: {
998: #ifdef KLUDGELINEMODE
999: if (kludgelinemode)
1000: send_dont(TELOPT_SGA, 1);
1001: #endif
1002: send_will(TELOPT_LINEMODE, 1);
1003: send_dont(TELOPT_ECHO, 1);
1004: return 1;
1005: }
1006:
1007: static int
1008: docharmode()
1009: {
1010: #ifdef KLUDGELINEMODE
1011: if (kludgelinemode)
1012: send_do(TELOPT_SGA, 1);
1013: else
1014: #endif
1015: send_wont(TELOPT_LINEMODE, 1);
1016: send_do(TELOPT_ECHO, 1);
1017: return 1;
1018: }
1019:
1020: static int
1021: dolmmode(bit, on)
1022: int bit, on;
1023: {
1024: unsigned char c;
1025: extern int linemode;
1026:
1027: if (my_want_state_is_wont(TELOPT_LINEMODE)) {
1.10 art 1028: printf("?Need to have LINEMODE option enabled first.\r\n");
1029: printf("'mode ?' for help.\r\n");
1.1 deraadt 1030: return 0;
1031: }
1032:
1033: if (on)
1034: c = (linemode | bit);
1035: else
1036: c = (linemode & ~bit);
1037: lm_mode(&c, 1, 1);
1038: return 1;
1039: }
1040:
1041: int
1.10 art 1042: tn_setmode(bit)
1.1 deraadt 1043: {
1044: return dolmmode(bit, 1);
1045: }
1046:
1047: int
1.10 art 1048: tn_clearmode(bit)
1.1 deraadt 1049: {
1050: return dolmmode(bit, 0);
1051: }
1052:
1053: struct modelist {
1054: char *name; /* command name */
1055: char *help; /* help string */
1056: int (*handler)(); /* routine which executes command */
1057: int needconnect; /* Do we need to be connected to execute? */
1058: int arg1;
1059: };
1060:
1.40 millert 1061: static int modehelp(void);
1.1 deraadt 1062:
1063: static struct modelist ModeList[] = {
1064: { "character", "Disable LINEMODE option", docharmode, 1 },
1065: #ifdef KLUDGELINEMODE
1066: { "", "(or disable obsolete line-by-line mode)", 0 },
1067: #endif
1068: { "line", "Enable LINEMODE option", dolinemode, 1 },
1069: #ifdef KLUDGELINEMODE
1070: { "", "(or enable obsolete line-by-line mode)", 0 },
1071: #endif
1072: { "", "", 0 },
1073: { "", "These require the LINEMODE option to be enabled", 0 },
1.10 art 1074: { "isig", "Enable signal trapping", tn_setmode, 1, MODE_TRAPSIG },
1075: { "+isig", 0, tn_setmode, 1, MODE_TRAPSIG },
1076: { "-isig", "Disable signal trapping", tn_clearmode, 1, MODE_TRAPSIG },
1077: { "edit", "Enable character editing", tn_setmode, 1, MODE_EDIT },
1078: { "+edit", 0, tn_setmode, 1, MODE_EDIT },
1079: { "-edit", "Disable character editing", tn_clearmode, 1, MODE_EDIT },
1080: { "softtabs", "Enable tab expansion", tn_setmode, 1, MODE_SOFT_TAB },
1081: { "+softtabs", 0, tn_setmode, 1, MODE_SOFT_TAB },
1082: { "-softtabs", "Disable character editing", tn_clearmode, 1, MODE_SOFT_TAB },
1083: { "litecho", "Enable literal character echo", tn_setmode, 1, MODE_LIT_ECHO },
1084: { "+litecho", 0, tn_setmode, 1, MODE_LIT_ECHO },
1085: { "-litecho", "Disable literal character echo", tn_clearmode, 1, MODE_LIT_ECHO },
1.1 deraadt 1086: { "help", 0, modehelp, 0 },
1087: #ifdef KLUDGELINEMODE
1088: { "kludgeline", 0, dokludgemode, 1 },
1089: #endif
1090: { "", "", 0 },
1091: { "?", "Print help information", modehelp, 0 },
1092: { 0 },
1093: };
1094:
1095:
1.10 art 1096: static int
1.1 deraadt 1097: modehelp()
1098: {
1099: struct modelist *mt;
1100:
1.10 art 1101: printf("format is: 'mode Mode', where 'Mode' is one of:\r\n\r\n");
1.1 deraadt 1102: for (mt = ModeList; mt->name; mt++) {
1103: if (mt->help) {
1104: if (*mt->help)
1.10 art 1105: printf("%-15s %s\r\n", mt->name, mt->help);
1.1 deraadt 1106: else
1.10 art 1107: printf("\r\n");
1.1 deraadt 1108: }
1109: }
1110: return 0;
1111: }
1112:
1113: #define GETMODECMD(name) (struct modelist *) \
1114: genget(name, (char **) ModeList, sizeof(struct modelist))
1115:
1116: static int
1117: modecmd(argc, argv)
1118: int argc;
1119: char *argv[];
1120: {
1121: struct modelist *mt;
1122:
1123: if (argc != 2) {
1.10 art 1124: printf("'mode' command requires an argument\r\n");
1125: printf("'mode ?' for help.\r\n");
1.1 deraadt 1126: } else if ((mt = GETMODECMD(argv[1])) == 0) {
1.10 art 1127: fprintf(stderr, "Unknown mode '%s' ('mode ?' for help).\r\n", argv[1]);
1.1 deraadt 1128: } else if (Ambiguous(mt)) {
1.10 art 1129: fprintf(stderr, "Ambiguous mode '%s' ('mode ?' for help).\r\n", argv[1]);
1.1 deraadt 1130: } else if (mt->needconnect && !connected) {
1.10 art 1131: printf("?Need to be connected first.\r\n");
1132: printf("'mode ?' for help.\r\n");
1.1 deraadt 1133: } else if (mt->handler) {
1134: return (*mt->handler)(mt->arg1);
1135: }
1136: return 0;
1137: }
1138:
1139: /*
1140: * The following data structures and routines implement the
1141: * "display" command.
1142: */
1143:
1144: static int
1145: display(argc, argv)
1146: int argc;
1147: char *argv[];
1148: {
1149: struct togglelist *tl;
1150: struct setlist *sl;
1151:
1152: #define dotog(tl) if (tl->variable && tl->actionexplanation) { \
1153: if (*tl->variable) { \
1154: printf("will"); \
1155: } else { \
1156: printf("won't"); \
1157: } \
1.10 art 1158: printf(" %s.\r\n", tl->actionexplanation); \
1.1 deraadt 1159: }
1160:
1161: #define doset(sl) if (sl->name && *sl->name != ' ') { \
1162: if (sl->handler == 0) \
1.10 art 1163: printf("%-15s [%s]\r\n", sl->name, control(*sl->charp)); \
1.1 deraadt 1164: else \
1.10 art 1165: printf("%-15s \"%s\"\r\n", sl->name, (char *)sl->charp); \
1.1 deraadt 1166: }
1167:
1168: if (argc == 1) {
1169: for (tl = Togglelist; tl->name; tl++) {
1170: dotog(tl);
1171: }
1.10 art 1172: printf("\r\n");
1.1 deraadt 1173: for (sl = Setlist; sl->name; sl++) {
1174: doset(sl);
1175: }
1176: } else {
1177: int i;
1178:
1179: for (i = 1; i < argc; i++) {
1180: sl = getset(argv[i]);
1181: tl = GETTOGGLE(argv[i]);
1182: if (Ambiguous(sl) || Ambiguous(tl)) {
1.10 art 1183: printf("?Ambiguous argument '%s'.\r\n", argv[i]);
1.1 deraadt 1184: return 0;
1185: } else if (!sl && !tl) {
1.10 art 1186: printf("?Unknown argument '%s'.\r\n", argv[i]);
1.1 deraadt 1187: return 0;
1188: } else {
1189: if (tl) {
1190: dotog(tl);
1191: }
1192: if (sl) {
1193: doset(sl);
1194: }
1195: }
1196: }
1197: }
1198: /*@*/optionstatus();
1199: return 1;
1200: #undef doset
1201: #undef dotog
1202: }
1.10 art 1203:
1.1 deraadt 1204: /*
1205: * The following are the data structures, and many of the routines,
1206: * relating to command processing.
1207: */
1208:
1209: /*
1210: * Set the escape character.
1211: */
1212: static int
1213: setescape(argc, argv)
1214: int argc;
1215: char *argv[];
1216: {
1.39 mpech 1217: char *arg;
1.1 deraadt 1218: char buf[50];
1219:
1220: printf(
1.10 art 1221: "Deprecated usage - please use 'set escape%s%s' in the future.\r\n",
1.1 deraadt 1222: (argc > 2)? " ":"", (argc > 2)? argv[1]: "");
1223: if (argc > 2)
1224: arg = argv[1];
1225: else {
1226: printf("new escape character: ");
1227: (void) fgets(buf, sizeof(buf), stdin);
1228: arg = buf;
1229: }
1230: if (arg[0] != '\0')
1231: escape = arg[0];
1.56 guenther 1232: printf("Escape character is '%s'.\r\n", control(escape));
1.1 deraadt 1233: (void) fflush(stdout);
1234: return 1;
1235: }
1236:
1237: /*VARARGS*/
1238: static int
1239: togcrmod()
1240: {
1241: crmod = !crmod;
1.10 art 1242: printf("Deprecated usage - please use 'toggle crmod' in the future.\r\n");
1243: printf("%s map carriage return on output.\r\n", crmod ? "Will" : "Won't");
1.1 deraadt 1244: (void) fflush(stdout);
1245: return 1;
1246: }
1247:
1248: /*VARARGS*/
1.11 deraadt 1249: int
1.10 art 1250: telnetsuspend()
1.1 deraadt 1251: {
1252: #ifdef SIGTSTP
1253: setcommandmode();
1254: {
1255: long oldrows, oldcols, newrows, newcols, err;
1256:
1257: err = (TerminalWindowSize(&oldrows, &oldcols) == 0) ? 1 : 0;
1258: (void) kill(0, SIGTSTP);
1259: /*
1260: * If we didn't get the window size before the SUSPEND, but we
1.3 niklas 1261: * can get them now (?), then send the NAWS to make sure that
1.1 deraadt 1262: * we are set up for the right window size.
1263: */
1264: if (TerminalWindowSize(&newrows, &newcols) && connected &&
1265: (err || ((oldrows != newrows) || (oldcols != newcols)))) {
1266: sendnaws();
1267: }
1268: }
1269: /* reget parameters in case they were changed */
1270: TerminalSaveState();
1271: setconnmode(0);
1272: #else
1.10 art 1273: printf("Suspend is not supported. Try the '!' command instead\r\n");
1.1 deraadt 1274: #endif
1275: return 1;
1276: }
1277:
1278: /*ARGSUSED*/
1279: int
1280: shell(argc, argv)
1281: int argc;
1282: char *argv[];
1283: {
1284: long oldrows, oldcols, newrows, newcols, err;
1285:
1286: setcommandmode();
1287:
1288: err = (TerminalWindowSize(&oldrows, &oldcols) == 0) ? 1 : 0;
1289: switch(vfork()) {
1290: case -1:
1.10 art 1291: perror("Fork failed\r\n");
1.1 deraadt 1292: break;
1293:
1294: case 0:
1295: {
1296: /*
1297: * Fire up the shell in the child.
1298: */
1.39 mpech 1299: char *shellp, *shellname;
1.1 deraadt 1300:
1301: shellp = getenv("SHELL");
1302: if (shellp == NULL)
1303: shellp = "/bin/sh";
1.3 niklas 1304: if ((shellname = strrchr(shellp, '/')) == 0)
1.1 deraadt 1305: shellname = shellp;
1306: else
1307: shellname++;
1308: if (argc > 1)
1.36 deraadt 1309: execl(shellp, shellname, "-c", &saveline[1], (char *)NULL);
1.1 deraadt 1310: else
1.36 deraadt 1311: execl(shellp, shellname, (char *)NULL);
1.1 deraadt 1312: perror("Execl");
1313: _exit(1);
1314: }
1315: default:
1316: (void)wait((int *)0); /* Wait for the shell to complete */
1317:
1318: if (TerminalWindowSize(&newrows, &newcols) && connected &&
1319: (err || ((oldrows != newrows) || (oldcols != newcols)))) {
1320: sendnaws();
1321: }
1322: break;
1323: }
1324: return 1;
1325: }
1326:
1327: /*VARARGS*/
1.15 art 1328: static int
1.1 deraadt 1329: bye(argc, argv)
1330: int argc; /* Number of arguments */
1331: char *argv[]; /* arguments */
1332: {
1333: extern int resettermname;
1334:
1335: if (connected) {
1336: (void) shutdown(net, 2);
1.10 art 1337: printf("Connection closed.\r\n");
1.1 deraadt 1338: (void) NetClose(net);
1339: connected = 0;
1340: resettermname = 1;
1341: /* reset options */
1342: tninit();
1343: }
1344: if ((argc != 2) || (strcmp(argv[1], "fromquit") != 0)) {
1345: longjmp(toplevel, 1);
1346: /* NOTREACHED */
1347: }
1.10 art 1348: return 0; /* NOTREACHED */
1.1 deraadt 1349: }
1350:
1351: /*VARARGS*/
1.10 art 1352: int
1.1 deraadt 1353: quit()
1354: {
1355: (void) call(bye, "bye", "fromquit", 0);
1356: Exit(0);
1.10 art 1357: return 0; /*NOTREACHED*/
1.1 deraadt 1358: }
1359:
1360: /*VARARGS*/
1.10 art 1361: static int
1.1 deraadt 1362: logout()
1363: {
1364: send_do(TELOPT_LOGOUT, 1);
1365: (void) netflush();
1366: return 1;
1367: }
1368:
1369:
1370: /*
1371: * The SLC command.
1372: */
1373:
1374: struct slclist {
1375: char *name;
1376: char *help;
1377: void (*handler)();
1378: int arg;
1379: };
1380:
1381: static void slc_help();
1382:
1383: struct slclist SlcList[] = {
1384: { "export", "Use local special character definitions",
1385: slc_mode_export, 0 },
1386: { "import", "Use remote special character definitions",
1387: slc_mode_import, 1 },
1388: { "check", "Verify remote special character definitions",
1389: slc_mode_import, 0 },
1390: { "help", 0, slc_help, 0 },
1391: { "?", "Print help information", slc_help, 0 },
1392: { 0 },
1393: };
1394:
1395: static void
1396: slc_help()
1397: {
1398: struct slclist *c;
1399:
1400: for (c = SlcList; c->name; c++) {
1401: if (c->help) {
1402: if (*c->help)
1.10 art 1403: printf("%-15s %s\r\n", c->name, c->help);
1.1 deraadt 1404: else
1.10 art 1405: printf("\r\n");
1.1 deraadt 1406: }
1407: }
1408: }
1409:
1410: static struct slclist *
1411: getslc(name)
1412: char *name;
1413: {
1414: return (struct slclist *)
1415: genget(name, (char **) SlcList, sizeof(struct slclist));
1416: }
1417:
1.15 art 1418: static int
1.1 deraadt 1419: slccmd(argc, argv)
1420: int argc;
1421: char *argv[];
1422: {
1423: struct slclist *c;
1424:
1425: if (argc != 2) {
1426: fprintf(stderr,
1.10 art 1427: "Need an argument to 'slc' command. 'slc ?' for help.\r\n");
1.1 deraadt 1428: return 0;
1429: }
1430: c = getslc(argv[1]);
1431: if (c == 0) {
1.10 art 1432: fprintf(stderr, "'%s': unknown argument ('slc ?' for help).\r\n",
1.1 deraadt 1433: argv[1]);
1.3 niklas 1434: return 0;
1.1 deraadt 1435: }
1436: if (Ambiguous(c)) {
1.10 art 1437: fprintf(stderr, "'%s': ambiguous argument ('slc ?' for help).\r\n",
1.1 deraadt 1438: argv[1]);
1.3 niklas 1439: return 0;
1.1 deraadt 1440: }
1441: (*c->handler)(c->arg);
1442: slcstate();
1443: return 1;
1444: }
1445:
1446: /*
1447: * The ENVIRON command.
1448: */
1449:
1450: struct envlist {
1451: char *name;
1452: char *help;
1453: void (*handler)();
1454: int narg;
1455: };
1456:
1.41 millert 1457: static void env_help(void);
1.1 deraadt 1458:
1459: struct envlist EnvList[] = {
1460: { "define", "Define an environment variable",
1461: (void (*)())env_define, 2 },
1462: { "undefine", "Undefine an environment variable",
1463: env_undefine, 1 },
1464: { "export", "Mark an environment variable for automatic export",
1465: env_export, 1 },
1466: { "unexport", "Don't mark an environment variable for automatic export",
1467: env_unexport, 1 },
1468: { "send", "Send an environment variable", env_send, 1 },
1469: { "list", "List the current environment variables",
1470: env_list, 0 },
1471: { "help", 0, env_help, 0 },
1472: { "?", "Print help information", env_help, 0 },
1473: { 0 },
1474: };
1475:
1476: static void
1477: env_help()
1478: {
1479: struct envlist *c;
1480:
1481: for (c = EnvList; 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 envlist *
1492: getenvcmd(name)
1493: char *name;
1494: {
1495: return (struct envlist *)
1496: genget(name, (char **) EnvList, sizeof(struct envlist));
1497: }
1498:
1.15 art 1499: int
1.1 deraadt 1500: env_cmd(argc, argv)
1501: int argc;
1502: char *argv[];
1503: {
1504: struct envlist *c;
1505:
1506: if (argc < 2) {
1507: fprintf(stderr,
1.10 art 1508: "Need an argument to 'environ' command. 'environ ?' for help.\r\n");
1.1 deraadt 1509: return 0;
1510: }
1511: c = getenvcmd(argv[1]);
1512: if (c == 0) {
1.10 art 1513: fprintf(stderr, "'%s': unknown argument ('environ ?' 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 ('environ ?' for help).\r\n",
1.1 deraadt 1519: argv[1]);
1.3 niklas 1520: return 0;
1.1 deraadt 1521: }
1522: if (c->narg + 2 != argc) {
1523: fprintf(stderr,
1.10 art 1524: "Need %s%d argument%s to 'environ %s' command. 'environ ?' for help.\r\n",
1.1 deraadt 1525: c->narg < argc + 2 ? "only " : "",
1526: c->narg, c->narg == 1 ? "" : "s", c->name);
1527: return 0;
1528: }
1529: (*c->handler)(argv[2], argv[3]);
1530: return 1;
1531: }
1532:
1533: struct env_lst {
1534: struct env_lst *next; /* pointer to next structure */
1535: struct env_lst *prev; /* pointer to previous structure */
1536: unsigned char *var; /* pointer to variable name */
1537: unsigned char *value; /* pointer to variable value */
1538: int export; /* 1 -> export with default list of variables */
1539: int welldefined; /* A well defined variable */
1540: };
1541:
1542: struct env_lst envlisthead;
1543:
1544: struct env_lst *
1545: env_find(var)
1546: unsigned char *var;
1547: {
1.39 mpech 1548: struct env_lst *ep;
1.1 deraadt 1549:
1550: for (ep = envlisthead.next; ep; ep = ep->next) {
1551: if (strcmp((char *)ep->var, (char *)var) == 0)
1552: return(ep);
1553: }
1554: return(NULL);
1555: }
1556:
1557: void
1558: env_init()
1559: {
1560: extern char **environ;
1.10 art 1561: char **epp, *cp;
1562: struct env_lst *ep;
1.1 deraadt 1563:
1564: for (epp = environ; *epp; epp++) {
1.10 art 1565: if ((cp = strchr(*epp, '='))) {
1.1 deraadt 1566: *cp = '\0';
1567: ep = env_define((unsigned char *)*epp,
1568: (unsigned char *)cp+1);
1569: ep->export = 0;
1570: *cp = '=';
1571: }
1572: }
1573: /*
1574: * Special case for DISPLAY variable. If it is ":0.0" or
1575: * "unix:0.0", we have to get rid of "unix" and insert our
1576: * hostname.
1577: */
1578: if ((ep = env_find("DISPLAY"))
1579: && ((*ep->value == ':')
1.3 niklas 1580: || (strncmp((char *)ep->value, "unix:", 5) == 0))) {
1.18 deraadt 1581: char hbuf[MAXHOSTNAMELEN];
1.3 niklas 1582: char *cp2 = strchr((char *)ep->value, ':');
1.1 deraadt 1583:
1.18 deraadt 1584: gethostname(hbuf, sizeof hbuf);
1.10 art 1585:
1586: /* If this is not the full name, try to get it via DNS */
1587: if (strchr(hbuf, '.') == 0) {
1588: struct hostent *he = gethostbyname(hbuf);
1589: if (he != 0)
1.19 deraadt 1590: strncpy(hbuf, he->h_name, sizeof hbuf-1);
1591: hbuf[sizeof hbuf-1] = '\0';
1.10 art 1592: }
1593:
1.44 pvalchev 1594: if (asprintf (&cp, "%s%s", hbuf, cp2) == -1)
1.14 art 1595: err(1, "asprintf");
1.10 art 1596:
1.1 deraadt 1597: free(ep->value);
1598: ep->value = (unsigned char *)cp;
1599: }
1600: /*
1601: * If USER is not defined, but LOGNAME is, then add
1602: * USER with the value from LOGNAME. By default, we
1603: * don't export the USER variable.
1604: */
1605: if ((env_find("USER") == NULL) && (ep = env_find("LOGNAME"))) {
1606: env_define((unsigned char *)"USER", ep->value);
1607: env_unexport((unsigned char *)"USER");
1608: }
1609: env_export((unsigned char *)"DISPLAY");
1610: env_export((unsigned char *)"PRINTER");
1.10 art 1611: env_export((unsigned char *)"XAUTHORITY");
1.1 deraadt 1612: }
1613:
1614: struct env_lst *
1615: env_define(var, value)
1616: unsigned char *var, *value;
1617: {
1.39 mpech 1618: struct env_lst *ep;
1.1 deraadt 1619:
1.10 art 1620: if ((ep = env_find(var))) {
1.1 deraadt 1621: if (ep->var)
1622: free(ep->var);
1623: if (ep->value)
1624: free(ep->value);
1625: } else {
1.14 art 1626: if ((ep = malloc(sizeof(struct env_lst))) == NULL)
1627: err(1, "malloc");
1.1 deraadt 1628: ep->next = envlisthead.next;
1629: envlisthead.next = ep;
1630: ep->prev = &envlisthead;
1631: if (ep->next)
1632: ep->next->prev = ep;
1633: }
1.10 art 1634: ep->welldefined = opt_welldefined((char *)var);
1.1 deraadt 1635: ep->export = 1;
1.14 art 1636: if ((ep->var = strdup((char *)var)) == NULL)
1637: err(1, "strdup");
1638: if ((ep->value = strdup((char *)value)) == NULL)
1639: err(1, "strdup");
1.1 deraadt 1640: return(ep);
1641: }
1642:
1643: void
1644: env_undefine(var)
1645: unsigned char *var;
1646: {
1.39 mpech 1647: struct env_lst *ep;
1.1 deraadt 1648:
1.10 art 1649: if ((ep = env_find(var))) {
1.1 deraadt 1650: ep->prev->next = ep->next;
1651: if (ep->next)
1652: ep->next->prev = ep->prev;
1653: if (ep->var)
1654: free(ep->var);
1655: if (ep->value)
1656: free(ep->value);
1657: free(ep);
1658: }
1659: }
1660:
1661: void
1662: env_export(var)
1663: unsigned char *var;
1664: {
1.39 mpech 1665: struct env_lst *ep;
1.1 deraadt 1666:
1.10 art 1667: if ((ep = env_find(var)))
1.1 deraadt 1668: ep->export = 1;
1669: }
1670:
1671: void
1672: env_unexport(var)
1673: unsigned char *var;
1674: {
1.39 mpech 1675: struct env_lst *ep;
1.1 deraadt 1676:
1.15 art 1677: if ((ep = env_find(var)) != NULL)
1.1 deraadt 1678: ep->export = 0;
1679: }
1680:
1681: void
1682: env_send(var)
1683: unsigned char *var;
1684: {
1.39 mpech 1685: struct env_lst *ep;
1.1 deraadt 1686:
1.3 niklas 1687: if (my_state_is_wont(TELOPT_NEW_ENVIRON)
1.1 deraadt 1688: ) {
1689: fprintf(stderr,
1.10 art 1690: "Cannot send '%s': Telnet ENVIRON option not enabled\r\n",
1.1 deraadt 1691: var);
1692: return;
1693: }
1694: ep = env_find(var);
1695: if (ep == 0) {
1.10 art 1696: fprintf(stderr, "Cannot send '%s': variable not defined\r\n",
1.1 deraadt 1697: var);
1698: return;
1699: }
1700: env_opt_start_info();
1701: env_opt_add(ep->var);
1702: env_opt_end(0);
1703: }
1704:
1705: void
1706: env_list()
1707: {
1.39 mpech 1708: struct env_lst *ep;
1.1 deraadt 1709:
1710: for (ep = envlisthead.next; ep; ep = ep->next) {
1.10 art 1711: printf("%c %-20s %s\r\n", ep->export ? '*' : ' ',
1.1 deraadt 1712: ep->var, ep->value);
1713: }
1714: }
1715:
1716: unsigned char *
1717: env_default(init, welldefined)
1718: int init;
1719: {
1720: static struct env_lst *nep = NULL;
1721:
1722: if (init) {
1723: nep = &envlisthead;
1.10 art 1724: return NULL;
1.1 deraadt 1725: }
1726: if (nep) {
1.10 art 1727: while ((nep = nep->next)) {
1.1 deraadt 1728: if (nep->export && (nep->welldefined == welldefined))
1729: return(nep->var);
1730: }
1731: }
1732: return(NULL);
1733: }
1734:
1735: unsigned char *
1.48 otto 1736: env_getvalue(var, exported_only)
1.1 deraadt 1737: unsigned char *var;
1.48 otto 1738: int exported_only;
1.1 deraadt 1739: {
1.39 mpech 1740: struct env_lst *ep;
1.1 deraadt 1741:
1.48 otto 1742: if ((ep = env_find(var)) && (!exported_only || ep->export))
1.1 deraadt 1743: return(ep->value);
1744: return(NULL);
1745: }
1746:
1747: /*
1748: * Print status about the connection.
1749: */
1750: /*ARGSUSED*/
1.15 art 1751: static int
1.1 deraadt 1752: status(argc, argv)
1753: int argc;
1754: char *argv[];
1755: {
1756: if (connected) {
1.10 art 1757: printf("Connected to %s.\r\n", hostname);
1.1 deraadt 1758: if ((argc < 2) || strcmp(argv[1], "notmuch")) {
1759: int mode = getconnmode();
1760:
1761: if (my_want_state_is_will(TELOPT_LINEMODE)) {
1.10 art 1762: printf("Operating with LINEMODE option\r\n");
1763: printf("%s line editing\r\n", (mode&MODE_EDIT) ? "Local" : "No");
1764: printf("%s catching of signals\r\n",
1.1 deraadt 1765: (mode&MODE_TRAPSIG) ? "Local" : "No");
1766: slcstate();
1767: #ifdef KLUDGELINEMODE
1768: } else if (kludgelinemode && my_want_state_is_dont(TELOPT_SGA)) {
1.10 art 1769: printf("Operating in obsolete linemode\r\n");
1.1 deraadt 1770: #endif
1771: } else {
1.10 art 1772: printf("Operating in single character mode\r\n");
1.1 deraadt 1773: if (localchars)
1.10 art 1774: printf("Catching signals locally\r\n");
1.1 deraadt 1775: }
1.10 art 1776: printf("%s character echo\r\n", (mode&MODE_ECHO) ? "Local" : "Remote");
1.1 deraadt 1777: if (my_want_state_is_will(TELOPT_LFLOW))
1.10 art 1778: printf("%s flow control\r\n", (mode&MODE_FLOW) ? "Local" : "No");
1.1 deraadt 1779: }
1780: } else {
1.10 art 1781: printf("No connection.\r\n");
1.1 deraadt 1782: }
1.10 art 1783: printf("Escape character is '%s'.\r\n", control(escape));
1.1 deraadt 1784: (void) fflush(stdout);
1.10 art 1785: fflush(stdout);
1.1 deraadt 1786: return 1;
1787: }
1788:
1789: #ifdef SIGINFO
1790: /*
1791: * Function that gets called when SIGINFO is received.
1792: */
1.10 art 1793: void
1.1 deraadt 1794: ayt_status()
1795: {
1796: (void) call(status, "status", "notmuch", 0);
1797: }
1798: #endif
1799:
1.10 art 1800: static Command *getcmd(char *name);
1801:
1802: static void
1803: cmdrc(char *m1, char *m2)
1804: {
1805: static char rcname[128];
1806: Command *c;
1807: FILE *rcfile;
1808: int gotmachine = 0;
1809: int l1 = strlen(m1);
1810: int l2 = strlen(m2);
1.34 aaron 1811: char m1save[MAXHOSTNAMELEN];
1.10 art 1812:
1813: if (skiprc)
1814: return;
1815:
1.34 aaron 1816: strlcpy(m1save, m1, sizeof(m1save));
1.10 art 1817: m1 = m1save;
1818:
1819: if (rcname[0] == 0) {
1820: char *home = getenv("HOME");
1821:
1.29 millert 1822: if (home == NULL || *home == '\0')
1823: return;
1.10 art 1824: snprintf (rcname, sizeof(rcname), "%s/.telnetrc",
1825: home ? home : "");
1826: }
1827:
1828: if ((rcfile = fopen(rcname, "r")) == 0) {
1829: return;
1830: }
1831:
1832: for (;;) {
1833: if (fgets(line, sizeof(line), rcfile) == NULL)
1834: break;
1835: if (line[0] == 0)
1836: break;
1837: if (line[0] == '#')
1838: continue;
1839: if (gotmachine) {
1840: if (!isspace(line[0]))
1841: gotmachine = 0;
1842: }
1843: if (gotmachine == 0) {
1844: if (isspace(line[0]))
1845: continue;
1846: if (strncasecmp(line, m1, l1) == 0)
1847: strncpy(line, &line[l1], sizeof(line) - l1);
1848: else if (strncasecmp(line, m2, l2) == 0)
1849: strncpy(line, &line[l2], sizeof(line) - l2);
1850: else if (strncasecmp(line, "DEFAULT", 7) == 0)
1851: strncpy(line, &line[7], sizeof(line) - 7);
1852: else
1853: continue;
1854: if (line[0] != ' ' && line[0] != '\t' && line[0] != '\n')
1855: continue;
1856: gotmachine = 1;
1857: }
1858: makeargv();
1859: if (margv[0] == 0)
1860: continue;
1861: c = getcmd(margv[0]);
1862: if (Ambiguous(c)) {
1863: printf("?Ambiguous command: %s\r\n", margv[0]);
1864: continue;
1865: }
1866: if (c == 0) {
1867: printf("?Invalid command: %s\r\n", margv[0]);
1868: continue;
1869: }
1870: /*
1871: * This should never happen...
1872: */
1873: if (c->needconnect && !connected) {
1874: printf("?Need to be connected first for %s.\r\n", margv[0]);
1875: continue;
1876: }
1877: (*c->handler)(margc, margv);
1878: }
1879: fclose(rcfile);
1880: }
1881:
1.1 deraadt 1882:
1883: int
1884: tn(argc, argv)
1885: int argc;
1886: char *argv[];
1887: {
1.23 itojun 1888: struct addrinfo hints, *res, *res0;
1889: int error;
1.1 deraadt 1890: struct sockaddr_in sin;
1891: unsigned long temp;
1892: extern char *inet_ntoa();
1.10 art 1893: char *srp = 0;
1894: int srlen;
1.5 niklas 1895: char *cmd, *hostp = 0, *portp = 0, *user = 0, *aliasp = 0;
1.31 itojun 1896: int retry;
1897: const int niflags = NI_NUMERICHOST;
1.1 deraadt 1898:
1899: /* clear the socket address prior to use */
1.3 niklas 1900: memset((char *)&sin, 0, sizeof(sin));
1.1 deraadt 1901:
1902: if (connected) {
1.10 art 1903: printf("?Already connected to %s\r\n", hostname);
1.1 deraadt 1904: return 0;
1905: }
1906: if (argc < 2) {
1.43 hin 1907: strlcpy(line, "open ", sizeof(line));
1.1 deraadt 1908: printf("(to) ");
1909: (void) fgets(&line[strlen(line)], sizeof(line) - strlen(line), stdin);
1910: makeargv();
1911: argc = margc;
1912: argv = margv;
1913: }
1914: cmd = *argv;
1915: --argc; ++argv;
1916: while (argc) {
1.3 niklas 1917: if (strcmp(*argv, "help") == 0 || isprefix(*argv, "?"))
1.1 deraadt 1918: goto usage;
1919: if (strcmp(*argv, "-l") == 0) {
1920: --argc; ++argv;
1921: if (argc == 0)
1922: goto usage;
1.14 art 1923: if ((user = strdup(*argv++)) == NULL)
1924: err(1, "strdup");
1.1 deraadt 1925: --argc;
1926: continue;
1927: }
1.5 niklas 1928: if (strcmp(*argv, "-b") == 0) {
1929: --argc; ++argv;
1930: if (argc == 0)
1931: goto usage;
1932: aliasp = *argv++;
1933: --argc;
1934: continue;
1935: }
1.1 deraadt 1936: if (strcmp(*argv, "-a") == 0) {
1937: --argc; ++argv;
1938: autologin = 1;
1939: continue;
1940: }
1941: if (hostp == 0) {
1942: hostp = *argv++;
1943: --argc;
1944: continue;
1945: }
1946: if (portp == 0) {
1947: portp = *argv++;
1948: --argc;
1949: continue;
1950: }
1951: usage:
1.56 guenther 1952: printf("usage: %s [-a] [-b hostalias] [-l user] host-name [port]\r\n", cmd);
1.1 deraadt 1953: return 0;
1954: }
1955: if (hostp == 0)
1956: goto usage;
1957:
1958: if (hostp[0] == '@' || hostp[0] == '!') {
1959: if ((hostname = strrchr(hostp, ':')) == NULL)
1960: hostname = strrchr(hostp, '@');
1961: hostname++;
1962: srp = 0;
1963: temp = sourceroute(hostp, &srp, &srlen);
1964: if (temp == 0) {
1965: herror(srp);
1966: return 0;
1967: } else if (temp == -1) {
1.10 art 1968: printf("Bad source route option: %s\r\n", hostp);
1.1 deraadt 1969: return 0;
1970: } else {
1.10 art 1971: abort();
1.1 deraadt 1972: }
1.23 itojun 1973: } else
1974: {
1975: hostname = hostp;
1976: memset(&hints, 0, sizeof(hints));
1.46 otto 1977: hints.ai_family = family;
1.23 itojun 1978: hints.ai_socktype = SOCK_STREAM;
1979: hints.ai_flags = AI_CANONNAME;
1980: if (portp == NULL) {
1981: portp = "telnet";
1.38 itojun 1982: telnetport = 1;
1.23 itojun 1983: } else if (*portp == '-') {
1984: portp++;
1985: telnetport = 1;
1.38 itojun 1986: } else
1987: telnetport = 0;
1.28 millert 1988: h_errno = 0;
1.23 itojun 1989: error = getaddrinfo(hostp, portp, &hints, &res0);
1990: if (error) {
1.28 millert 1991: if (error == EAI_SERVICE)
1992: warnx("%s: bad port", portp);
1993: else
1994: warnx("%s: %s", hostp, gai_strerror(error));
1995: if (h_errno)
1996: herror(hostp);
1.23 itojun 1997: return 0;
1998: }
1.1 deraadt 1999: }
1.10 art 2000:
1.23 itojun 2001: net = -1;
2002: retry = 0;
2003: for (res = res0; res; res = res->ai_next) {
2004: if (1 /* retry */) {
1.31 itojun 2005: char hbuf[NI_MAXHOST];
1.23 itojun 2006:
1.31 itojun 2007: if (getnameinfo(res->ai_addr, res->ai_addrlen, hbuf, sizeof(hbuf),
2008: NULL, 0, niflags) != 0) {
1.43 hin 2009: strlcpy(hbuf, "(invalid)", sizeof(hbuf));
1.31 itojun 2010: }
1.23 itojun 2011: printf("Trying %s...\r\n", hbuf);
2012: }
2013: net = socket(res->ai_family, res->ai_socktype, res->ai_protocol);
2014: if (net < 0)
2015: continue;
1.51 claudio 2016:
1.55 sthen 2017: if (rtableid >= 0 && (setsockopt(net, SOL_SOCKET, SO_RTABLE, &rtableid,
2018: sizeof(rtableid)) == -1))
1.54 phessler 2019: perror("setsockopt (SO_RTABLE)");
1.10 art 2020:
1.5 niklas 2021: if (aliasp) {
1.23 itojun 2022: struct addrinfo ahints, *ares;
2023:
2024: memset(&ahints, 0, sizeof(ahints));
1.46 otto 2025: ahints.ai_family = family;
1.23 itojun 2026: ahints.ai_socktype = SOCK_STREAM;
2027: ahints.ai_flags = AI_PASSIVE;
2028: error = getaddrinfo(aliasp, "0", &ahints, &ares);
2029: if (error) {
2030: warn("%s: %s", aliasp, gai_strerror(error));
2031: close(net);
1.49 otto 2032: net = -1;
1.23 itojun 2033: continue;
1.5 niklas 2034: }
1.32 itojun 2035: if (bind(net, ares->ai_addr, ares->ai_addrlen) < 0) {
1.31 itojun 2036: perror(aliasp);
2037: (void) close(net); /* dump descriptor */
1.49 otto 2038: net = -1;
1.23 itojun 2039: freeaddrinfo(ares);
2040: continue;
1.5 niklas 2041: }
1.23 itojun 2042: freeaddrinfo(ares);
2043: }
2044: if (srp && res->ai_family == AF_INET
1.56 guenther 2045: && setsockopt(net, IPPROTO_IP, IP_OPTIONS, srp, srlen) < 0)
1.1 deraadt 2046: perror("setsockopt (IP_OPTIONS)");
1.23 itojun 2047: if (res->ai_family == AF_INET) {
1.1 deraadt 2048: if (tos < 0)
1.3 niklas 2049: tos = IPTOS_LOWDELAY; /* Low Delay bit */
1.1 deraadt 2050: if (tos
1.56 guenther 2051: && (setsockopt(net, IPPROTO_IP, IP_TOS, &tos, sizeof(int)) < 0)
1.1 deraadt 2052: && (errno != ENOPROTOOPT))
2053: perror("telnet: setsockopt (IP_TOS) (ignored)");
2054: }
2055:
1.56 guenther 2056: if (debug) {
2057: int one = 1;
2058:
2059: if (setsockopt(net, SOL_SOCKET, SO_DEBUG, &one,
2060: sizeof(one)) < 0)
2061: perror("setsockopt (SO_DEBUG)");
1.1 deraadt 2062: }
2063:
1.23 itojun 2064: if (connect(net, res->ai_addr, res->ai_addrlen) < 0) {
1.31 itojun 2065: char hbuf[NI_MAXHOST];
1.16 deraadt 2066:
1.31 itojun 2067: if (getnameinfo(res->ai_addr, res->ai_addrlen, hbuf, sizeof(hbuf),
2068: NULL, 0, niflags) != 0) {
1.43 hin 2069: strlcpy(hbuf, "(invalid)", sizeof(hbuf));
1.31 itojun 2070: }
1.25 itojun 2071: fprintf(stderr, "telnet: connect to address %s: %s\n", hbuf,
2072: strerror(errno));
1.23 itojun 2073:
2074: close(net);
2075: net = -1;
2076: retry++;
2077: continue;
1.1 deraadt 2078: }
1.23 itojun 2079:
1.1 deraadt 2080: connected++;
1.23 itojun 2081: break;
2082: }
2083: freeaddrinfo(res0);
2084: if (net < 0) {
2085: return 0;
2086: }
1.1 deraadt 2087: cmdrc(hostp, hostname);
2088: if (autologin && user == NULL) {
2089: struct passwd *pw;
2090:
2091: user = getenv("USER");
2092: if (user == NULL ||
1.15 art 2093: ((pw = getpwnam(user)) && pw->pw_uid != getuid())) {
2094: if ((pw = getpwuid(getuid())) != NULL)
1.1 deraadt 2095: user = pw->pw_name;
2096: else
2097: user = NULL;
2098: }
2099: }
2100: if (user) {
2101: env_define((unsigned char *)"USER", (unsigned char *)user);
2102: env_export((unsigned char *)"USER");
2103: }
2104: (void) call(status, "status", "notmuch", 0);
2105: if (setjmp(peerdied) == 0)
2106: telnet(user);
2107: (void) NetClose(net);
1.10 art 2108: ExitString("Connection closed by foreign host.\r\n",1);
1.1 deraadt 2109: /*NOTREACHED*/
1.10 art 2110: return 0;
1.1 deraadt 2111: }
2112:
2113: #define HELPINDENT (sizeof ("connect"))
2114:
2115: static char
2116: openhelp[] = "connect to a site",
2117: closehelp[] = "close current connection",
2118: logouthelp[] = "forcibly logout remote user and close the connection",
2119: quithelp[] = "exit telnet",
2120: statushelp[] = "print status information",
2121: helphelp[] = "print help information",
2122: sendhelp[] = "transmit special characters ('send ?' for more)",
2123: sethelp[] = "set operating parameters ('set ?' for more)",
2124: unsethelp[] = "unset operating parameters ('unset ?' for more)",
2125: togglestring[] ="toggle operating parameters ('toggle ?' for more)",
2126: slchelp[] = "change state of special charaters ('slc ?' for more)",
2127: displayhelp[] = "display operating parameters",
2128: zhelp[] = "suspend telnet",
1.21 deraadt 2129: #ifdef SKEY
2130: skeyhelp[] = "compute response to s/key challenge",
2131: #endif
1.1 deraadt 2132: shellhelp[] = "invoke a subshell",
2133: envhelp[] = "change environment variables ('environ ?' for more)",
2134: modestring[] = "try to enter line or character mode ('mode ?' for more)";
2135:
1.40 millert 2136: static int help(int, char**);
1.1 deraadt 2137:
2138: static Command cmdtab[] = {
2139: { "close", closehelp, bye, 1 },
2140: { "logout", logouthelp, logout, 1 },
2141: { "display", displayhelp, display, 0 },
2142: { "mode", modestring, modecmd, 0 },
2143: { "open", openhelp, tn, 0 },
2144: { "quit", quithelp, quit, 0 },
2145: { "send", sendhelp, sendcmd, 0 },
2146: { "set", sethelp, setcmd, 0 },
2147: { "unset", unsethelp, unsetcmd, 0 },
2148: { "status", statushelp, status, 0 },
2149: { "toggle", togglestring, toggle, 0 },
2150: { "slc", slchelp, slccmd, 0 },
1.10 art 2151:
2152: { "z", zhelp, telnetsuspend, 0 },
1.1 deraadt 2153: { "!", shellhelp, shell, 0 },
2154: { "environ", envhelp, env_cmd, 0 },
2155: { "?", helphelp, help, 0 },
1.6 deraadt 2156: #if defined(SKEY)
1.21 deraadt 2157: { "skey", skeyhelp, skey_calc, 0 },
1.6 deraadt 2158: #endif
1.10 art 2159: { 0, 0, 0, 0 }
1.1 deraadt 2160: };
2161:
2162: static char crmodhelp[] = "deprecated command -- use 'toggle crmod' instead";
2163: static char escapehelp[] = "deprecated command -- use 'set escape' instead";
2164:
2165: static Command cmdtab2[] = {
2166: { "help", 0, help, 0 },
2167: { "escape", escapehelp, setescape, 0 },
2168: { "crmod", crmodhelp, togcrmod, 0 },
1.10 art 2169: { 0, 0, 0, 0 }
1.1 deraadt 2170: };
2171:
2172:
2173: /*
2174: * Call routine with argc, argv set from args (terminated by 0).
2175: */
2176:
2177: /*VARARGS1*/
1.10 art 2178: static int
2179: call(intrtn_t routine, ...)
1.1 deraadt 2180: {
2181: va_list ap;
2182: char *args[100];
2183: int argno = 0;
2184:
1.10 art 2185: va_start(ap, routine);
2186: while ((args[argno++] = va_arg(ap, char *)) != 0);
1.1 deraadt 2187: va_end(ap);
2188: return (*routine)(argno-1, args);
2189: }
2190:
2191:
2192: static Command *
2193: getcmd(name)
2194: char *name;
2195: {
2196: Command *cm;
2197:
1.10 art 2198: if ((cm = (Command *) genget(name, (char **) cmdtab, sizeof(Command))))
1.1 deraadt 2199: return cm;
2200: return (Command *) genget(name, (char **) cmdtab2, sizeof(Command));
2201: }
2202:
2203: void
2204: command(top, tbuf, cnt)
2205: int top;
2206: char *tbuf;
2207: int cnt;
2208: {
1.39 mpech 2209: Command *c;
1.1 deraadt 2210:
2211: setcommandmode();
2212: if (!top) {
2213: putchar('\n');
2214: } else {
2215: (void) signal(SIGINT, SIG_DFL);
2216: (void) signal(SIGQUIT, SIG_DFL);
2217: }
2218: for (;;) {
2219: if (rlogin == _POSIX_VDISABLE)
2220: printf("%s> ", prompt);
2221: if (tbuf) {
1.39 mpech 2222: char *cp;
1.1 deraadt 2223: cp = line;
2224: while (cnt > 0 && (*cp++ = *tbuf++) != '\n')
2225: cnt--;
2226: tbuf = 0;
2227: if (cp == line || *--cp != '\n' || cp == line)
2228: goto getline;
2229: *cp = '\0';
2230: if (rlogin == _POSIX_VDISABLE)
1.10 art 2231: printf("%s\r\n", line);
1.1 deraadt 2232: } else {
2233: getline:
2234: if (rlogin != _POSIX_VDISABLE)
2235: printf("%s> ", prompt);
2236: if (fgets(line, sizeof(line), stdin) == NULL) {
2237: if (feof(stdin) || ferror(stdin)) {
2238: (void) quit();
2239: /*NOTREACHED*/
2240: }
2241: break;
2242: }
2243: }
2244: if (line[0] == 0)
2245: break;
2246: makeargv();
2247: if (margv[0] == 0) {
2248: break;
2249: }
2250: c = getcmd(margv[0]);
2251: if (Ambiguous(c)) {
1.10 art 2252: printf("?Ambiguous command\r\n");
1.1 deraadt 2253: continue;
2254: }
2255: if (c == 0) {
1.10 art 2256: printf("?Invalid command\r\n");
1.1 deraadt 2257: continue;
2258: }
2259: if (c->needconnect && !connected) {
1.10 art 2260: printf("?Need to be connected first.\r\n");
1.1 deraadt 2261: continue;
2262: }
2263: if ((*c->handler)(margc, margv)) {
2264: break;
2265: }
2266: }
2267: if (!top) {
2268: if (!connected) {
2269: longjmp(toplevel, 1);
2270: /*NOTREACHED*/
2271: }
2272: setconnmode(0);
2273: }
2274: }
2275:
2276: /*
2277: * Help command.
2278: */
1.15 art 2279: static int
1.1 deraadt 2280: help(argc, argv)
2281: int argc;
2282: char *argv[];
2283: {
1.39 mpech 2284: Command *c;
1.1 deraadt 2285:
2286: if (argc == 1) {
1.10 art 2287: printf("Commands may be abbreviated. Commands are:\r\n\r\n");
1.1 deraadt 2288: for (c = cmdtab; c->name; c++)
2289: if (c->help) {
1.37 deraadt 2290: printf("%-*s\t%s\r\n", (int)HELPINDENT, c->name,
1.1 deraadt 2291: c->help);
2292: }
2293: return 0;
2294: }
2295: while (--argc > 0) {
1.39 mpech 2296: char *arg;
1.1 deraadt 2297: arg = *++argv;
2298: c = getcmd(arg);
2299: if (Ambiguous(c))
1.10 art 2300: printf("?Ambiguous help command %s\r\n", arg);
1.1 deraadt 2301: else if (c == (Command *)0)
1.10 art 2302: printf("?Invalid help command %s\r\n", arg);
1.1 deraadt 2303: else
1.10 art 2304: printf("%s\r\n", c->help);
1.1 deraadt 2305: }
2306: return 0;
2307: }
2308:
2309: /*
2310: * Source route is handed in as
2311: * [!]@hop1@hop2...[@|:]dst
2312: * If the leading ! is present, it is a
2313: * strict source route, otherwise it is
2314: * assmed to be a loose source route.
2315: *
2316: * We fill in the source route option as
2317: * hop1,hop2,hop3...dest
2318: * and return a pointer to hop1, which will
2319: * be the address to connect() to.
2320: *
2321: * Arguments:
2322: * arg: pointer to route list to decipher
2323: *
2324: * cpp: If *cpp is not equal to NULL, this is a
2325: * pointer to a pointer to a character array
2326: * that should be filled in with the option.
2327: *
2328: * lenp: pointer to an integer that contains the
2329: * length of *cpp if *cpp != NULL.
2330: *
2331: * Return values:
2332: *
2333: * Returns the address of the host to connect to. If the
2334: * return value is -1, there was a syntax error in the
2335: * option, either unknown characters, or too many hosts.
2336: * If the return value is 0, one of the hostnames in the
2337: * path is unknown, and *cpp is set to point to the bad
2338: * hostname.
2339: *
2340: * *cpp: If *cpp was equal to NULL, it will be filled
2341: * in with a pointer to our static area that has
2342: * the option filled in. This will be 32bit aligned.
1.3 niklas 2343: *
1.1 deraadt 2344: * *lenp: This will be filled in with how long the option
2345: * pointed to by *cpp is.
1.3 niklas 2346: *
1.1 deraadt 2347: */
2348: unsigned long
2349: sourceroute(arg, cpp, lenp)
2350: char *arg;
2351: char **cpp;
2352: int *lenp;
2353: {
2354: static char lsr[44];
2355: char *cp, *cp2, *lsrp, *lsrep;
1.39 mpech 2356: int tmp;
1.1 deraadt 2357: struct in_addr sin_addr;
1.39 mpech 2358: struct hostent *host = 0;
2359: char c;
1.1 deraadt 2360:
2361: /*
2362: * Verify the arguments, and make sure we have
2363: * at least 7 bytes for the option.
2364: */
2365: if (cpp == NULL || lenp == NULL)
2366: return((unsigned long)-1);
2367: if (*cpp != NULL && *lenp < 7)
2368: return((unsigned long)-1);
2369: /*
2370: * Decide whether we have a buffer passed to us,
2371: * or if we need to use our own static buffer.
2372: */
2373: if (*cpp) {
2374: lsrp = *cpp;
2375: lsrep = lsrp + *lenp;
2376: } else {
2377: *cpp = lsrp = lsr;
2378: lsrep = lsrp + 44;
2379: }
2380:
2381: cp = arg;
2382:
2383: /*
2384: * Next, decide whether we have a loose source
2385: * route or a strict source route, and fill in
2386: * the begining of the option.
2387: */
2388: if (*cp == '!') {
2389: cp++;
2390: *lsrp++ = IPOPT_SSRR;
2391: } else
2392: *lsrp++ = IPOPT_LSRR;
2393:
2394: if (*cp != '@')
2395: return((unsigned long)-1);
2396:
2397: lsrp++; /* skip over length, we'll fill it in later */
2398: *lsrp++ = 4;
2399:
2400: cp++;
2401:
2402: sin_addr.s_addr = 0;
2403:
2404: for (c = 0;;) {
2405: if (c == ':')
2406: cp2 = 0;
1.10 art 2407: else for (cp2 = cp; (c = *cp2); cp2++) {
1.1 deraadt 2408: if (c == ',') {
2409: *cp2++ = '\0';
2410: if (*cp2 == '@')
2411: cp2++;
2412: } else if (c == '@') {
2413: *cp2++ = '\0';
2414: } else if (c == ':') {
2415: *cp2++ = '\0';
2416: } else
2417: continue;
2418: break;
2419: }
2420: if (!c)
2421: cp2 = 0;
2422:
1.10 art 2423: if ((tmp = inet_addr(cp)) != -1) {
1.1 deraadt 2424: sin_addr.s_addr = tmp;
1.10 art 2425: } else if ((host = gethostbyname(cp))) {
1.3 niklas 2426: memmove((caddr_t)&sin_addr,
1.10 art 2427: host->h_addr_list[0],
2428: sizeof(sin_addr));
1.1 deraadt 2429: } else {
2430: *cpp = cp;
2431: return(0);
2432: }
1.3 niklas 2433: memmove(lsrp, (char *)&sin_addr, 4);
1.1 deraadt 2434: lsrp += 4;
2435: if (cp2)
2436: cp = cp2;
2437: else
2438: break;
2439: /*
2440: * Check to make sure there is space for next address
2441: */
2442: if (lsrp + 4 > lsrep)
2443: return((unsigned long)-1);
2444: }
2445: if ((*(*cpp+IPOPT_OLEN) = lsrp - *cpp) <= 7) {
2446: *cpp = 0;
2447: *lenp = 0;
2448: return((unsigned long)-1);
2449: }
2450: *lsrp++ = IPOPT_NOP; /* 32 bit word align it */
2451: *lenp = lsrp - *cpp;
2452: return(sin_addr.s_addr);
2453: }
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