Annotation of src/usr.bin/tftp/main.c, Revision 1.20
1.20 ! jmc 1: /* $OpenBSD: main.c,v 1.19 2003/09/25 09:45:46 jmc Exp $ */
1.1 deraadt 2: /* $NetBSD: main.c,v 1.6 1995/05/21 16:54:10 mycroft Exp $ */
3:
4: /*
5: * Copyright (c) 1983, 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.
1.13 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:
33: #ifndef lint
1.12 henning 34: static const char copyright[] =
1.1 deraadt 35: "@(#) Copyright (c) 1983, 1993\n\
36: The Regents of the University of California. All rights reserved.\n";
37: #endif /* not lint */
38:
39: #ifndef lint
40: #if 0
41: static char sccsid[] = "@(#)main.c 8.1 (Berkeley) 6/6/93";
42: #endif
1.20 ! jmc 43: static const char rcsid[] = "$OpenBSD: main.c,v 1.19 2003/09/25 09:45:46 jmc Exp $";
1.1 deraadt 44: #endif /* not lint */
45:
46: /* Many bug fixes are from Jim Guyton <guyton@rand-unix> */
47:
48: /*
49: * TFTP User Program -- Command Interface.
50: */
51: #include <sys/types.h>
52: #include <sys/socket.h>
53: #include <sys/file.h>
54:
55: #include <netinet/in.h>
56:
57: #include <arpa/inet.h>
58:
59: #include <ctype.h>
60: #include <errno.h>
61: #include <netdb.h>
62: #include <setjmp.h>
63: #include <signal.h>
64: #include <stdio.h>
65: #include <stdlib.h>
66: #include <string.h>
67: #include <unistd.h>
1.6 mickey 68: #include <err.h>
1.1 deraadt 69:
70: #include "extern.h"
71:
72: #define TIMEOUT 5 /* secs between rexmt's */
73: #define LBUFLEN 200 /* size of input buffer */
1.5 deraadt 74: #define MAXARGV 20
1.1 deraadt 75:
76: struct sockaddr_in peeraddr;
77: int f;
78: short port;
79: int trace;
80: int verbose;
81: int connected;
82: char mode[32];
83: char line[LBUFLEN];
84: int margc;
1.5 deraadt 85: char *margv[MAXARGV+1];
1.1 deraadt 86: char *prompt = "tftp";
87: jmp_buf toplevel;
1.16 deraadt 88: void intr(int);
1.1 deraadt 89: struct servent *sp;
90:
1.10 millert 91: void get(int, char **);
92: void help(int, char **);
93: void modecmd(int, char **);
94: void put(int, char **);
95: void quit(int, char **);
96: void setascii(int, char **);
97: void setbinary(int, char **);
98: void setpeer(int, char **);
99: void setrexmt(int, char **);
100: void settimeout(int, char **);
101: void settrace(int, char **);
102: void setverbose(int, char **);
103: void status(int, char **);
104:
105: static __dead void command(void);
106:
107: static void getusage(char *);
108: static int makeargv(void);
109: static void putusage(char *);
110: static void settftpmode(char *);
1.1 deraadt 111:
112: #define HELPINDENT (sizeof("connect"))
113:
114: struct cmd {
115: char *name;
116: char *help;
1.10 millert 117: void (*handler)(int, char **);
1.1 deraadt 118: };
119:
120: char vhelp[] = "toggle verbose mode";
121: char thelp[] = "toggle packet tracing";
122: char chelp[] = "connect to remote tftp";
123: char qhelp[] = "exit tftp";
124: char hhelp[] = "print help information";
125: char shelp[] = "send file";
126: char rhelp[] = "receive file";
127: char mhelp[] = "set file transfer mode";
128: char sthelp[] = "show current status";
129: char xhelp[] = "set per-packet retransmission timeout";
130: char ihelp[] = "set total retransmission timeout";
131: char ashelp[] = "set mode to netascii";
132: char bnhelp[] = "set mode to octet";
133:
134: struct cmd cmdtab[] = {
135: { "connect", chelp, setpeer },
136: { "mode", mhelp, modecmd },
137: { "put", shelp, put },
138: { "get", rhelp, get },
139: { "quit", qhelp, quit },
140: { "verbose", vhelp, setverbose },
141: { "trace", thelp, settrace },
142: { "status", sthelp, status },
143: { "binary", bnhelp, setbinary },
144: { "ascii", ashelp, setascii },
145: { "rexmt", xhelp, setrexmt },
146: { "timeout", ihelp, settimeout },
147: { "?", hhelp, help },
1.8 mpech 148: { NULL, NULL, NULL }
1.1 deraadt 149: };
150:
1.14 deraadt 151: struct cmd *getcmd(char *);
152: char *tail(char *);
1.1 deraadt 153:
154: int
1.14 deraadt 155: main(int argc, char *argv[])
1.1 deraadt 156: {
157: struct sockaddr_in s_in;
158:
159: sp = getservbyname("tftp", "udp");
1.6 mickey 160: if (sp == 0)
161: errx(1, "udp/tftp: unknown service");
1.1 deraadt 162: f = socket(AF_INET, SOCK_DGRAM, 0);
1.6 mickey 163: if (f < 0)
164: err(3, "tftp: socket");
1.1 deraadt 165: bzero((char *)&s_in, sizeof (s_in));
166: s_in.sin_family = AF_INET;
1.6 mickey 167: if (bind(f, (struct sockaddr *)&s_in, sizeof (s_in)) < 0)
168: err(1, "tftp: bind");
1.11 deraadt 169: strlcpy(mode, "netascii", sizeof mode);
1.1 deraadt 170: signal(SIGINT, intr);
171: if (argc > 1) {
172: if (setjmp(toplevel) != 0)
173: exit(0);
174: setpeer(argc, argv);
175: }
176: if (setjmp(toplevel) != 0)
177: (void)putchar('\n');
178: command();
1.7 pvalchev 179: return (0);
1.1 deraadt 180: }
181:
1.3 deraadt 182: char hostname[MAXHOSTNAMELEN];
1.1 deraadt 183:
184: void
1.14 deraadt 185: setpeer(int argc, char *argv[])
1.1 deraadt 186: {
187: struct hostent *host;
188:
189: if (argc < 2) {
1.11 deraadt 190: strlcpy(line, "Connect ", sizeof line);
1.1 deraadt 191: printf("(to) ");
192: fgets(&line[strlen(line)], LBUFLEN-strlen(line), stdin);
1.5 deraadt 193: if (makeargv())
194: return;
1.1 deraadt 195: argc = margc;
196: argv = margv;
197: }
198: if ((argc < 2) || (argc > 3)) {
1.20 ! jmc 199: printf("usage: %s [host [port]]\n", argv[0]);
1.1 deraadt 200: return;
201: }
202: if (inet_aton(argv[1], &peeraddr.sin_addr) != 0) {
203: peeraddr.sin_family = AF_INET;
1.3 deraadt 204: (void) strncpy(hostname, argv[1], sizeof hostname);
205: hostname[sizeof(hostname)-1] = '\0';
1.1 deraadt 206: } else {
207: host = gethostbyname(argv[1]);
208: if (host == 0) {
209: connected = 0;
210: printf("%s: unknown host\n", argv[1]);
211: return;
212: }
213: peeraddr.sin_family = host->h_addrtype;
214: bcopy(host->h_addr, &peeraddr.sin_addr, host->h_length);
1.11 deraadt 215: (void) strlcpy(hostname, host->h_name, sizeof hostname);
1.1 deraadt 216: }
217: port = sp->s_port;
218: if (argc == 3) {
219: port = atoi(argv[2]);
220: if (port < 0) {
221: printf("%s: bad port number\n", argv[2]);
222: connected = 0;
223: return;
224: }
225: port = htons(port);
226: }
227: connected = 1;
228: }
229:
230: struct modes {
231: char *m_name;
232: char *m_mode;
233: } modes[] = {
234: { "ascii", "netascii" },
235: { "netascii", "netascii" },
236: { "binary", "octet" },
237: { "image", "octet" },
238: { "octet", "octet" },
239: /* { "mail", "mail" }, */
1.8 mpech 240: { NULL, NULL }
1.1 deraadt 241: };
242:
243: void
1.14 deraadt 244: modecmd(int argc, char *argv[])
1.1 deraadt 245: {
1.9 mpech 246: struct modes *p;
1.1 deraadt 247: char *sep;
248:
249: if (argc < 2) {
250: printf("Using %s mode to transfer files.\n", mode);
251: return;
252: }
253: if (argc == 2) {
1.8 mpech 254: for (p = modes; p->m_name != NULL; p++)
1.1 deraadt 255: if (strcmp(argv[1], p->m_name) == 0)
256: break;
257: if (p->m_name) {
258: settftpmode(p->m_mode);
259: return;
260: }
261: printf("%s: unknown mode\n", argv[1]);
262: /* drop through and print usage message */
263: }
264:
265: printf("usage: %s [", argv[0]);
266: sep = " ";
1.8 mpech 267: for (p = modes; p->m_name != NULL; p++) {
1.1 deraadt 268: printf("%s%s", sep, p->m_name);
269: if (*sep == ' ')
270: sep = " | ";
271: }
272: printf(" ]\n");
273: return;
274: }
275:
276: void
1.14 deraadt 277: setbinary(int argc, char *argv[])
1.6 mickey 278: {
1.1 deraadt 279:
280: settftpmode("octet");
281: }
282:
283: void
1.14 deraadt 284: setascii(int argc, char *argv[])
1.1 deraadt 285: {
286:
287: settftpmode("netascii");
288: }
289:
290: static void
1.14 deraadt 291: settftpmode(char *newmode)
1.1 deraadt 292: {
1.11 deraadt 293: strlcpy(mode, newmode, sizeof mode);
1.1 deraadt 294: if (verbose)
295: printf("mode set to %s\n", mode);
296: }
297:
298:
299: /*
300: * Send file(s).
301: */
302: void
1.14 deraadt 303: put(int argc, char *argv[])
1.1 deraadt 304: {
305: int fd;
1.9 mpech 306: int n;
307: char *cp, *targ;
1.1 deraadt 308:
309: if (argc < 2) {
1.11 deraadt 310: strlcpy(line, "send ", sizeof line);
1.1 deraadt 311: printf("(file) ");
312: fgets(&line[strlen(line)], LBUFLEN-strlen(line), stdin);
1.5 deraadt 313: if (makeargv())
314: return;
1.1 deraadt 315: argc = margc;
316: argv = margv;
317: }
318: if (argc < 2) {
319: putusage(argv[0]);
320: return;
321: }
322: targ = argv[argc - 1];
1.4 millert 323: if (strchr(argv[argc - 1], ':')) {
1.1 deraadt 324: char *cp;
325: struct hostent *hp;
326:
327: for (n = 1; n < argc - 1; n++)
1.4 millert 328: if (strchr(argv[n], ':')) {
1.1 deraadt 329: putusage(argv[0]);
330: return;
331: }
332: cp = argv[argc - 1];
1.4 millert 333: targ = strchr(cp, ':');
1.1 deraadt 334: *targ++ = 0;
335: hp = gethostbyname(cp);
336: if (hp == NULL) {
1.6 mickey 337: warnx("%s: %s", cp, hstrerror(h_errno));
1.1 deraadt 338: return;
339: }
340: bcopy(hp->h_addr, (caddr_t)&peeraddr.sin_addr, hp->h_length);
341: peeraddr.sin_family = hp->h_addrtype;
342: connected = 1;
1.17 deraadt 343: port = sp->s_port;
1.11 deraadt 344: strlcpy(hostname, hp->h_name, sizeof hostname);
1.1 deraadt 345: }
346: if (!connected) {
347: printf("No target machine specified.\n");
348: return;
349: }
350: if (argc < 4) {
351: cp = argc == 2 ? tail(targ) : argv[1];
352: fd = open(cp, O_RDONLY);
353: if (fd < 0) {
1.6 mickey 354: warn("open: %s", cp);
1.1 deraadt 355: return;
356: }
357: if (verbose)
358: printf("putting %s to %s:%s [%s]\n",
1.18 deraadt 359: cp, hostname, targ, mode);
1.1 deraadt 360: peeraddr.sin_port = port;
361: sendfile(fd, targ, mode);
362: return;
363: }
1.18 deraadt 364:
365: /* this assumes the target is a directory */
366: /* on a remote unix system. hmmmm. */
1.1 deraadt 367: for (n = 1; n < argc - 1; n++) {
1.12 henning 368: if (asprintf(&cp, "%s/%s", targ, tail(argv[n])) == -1)
369: err(1, "asprintf");
1.1 deraadt 370: fd = open(argv[n], O_RDONLY);
371: if (fd < 0) {
1.6 mickey 372: warn("open: %s", argv[n]);
1.1 deraadt 373: continue;
374: }
375: if (verbose)
376: printf("putting %s to %s:%s [%s]\n",
1.18 deraadt 377: argv[n], hostname, cp, mode);
1.1 deraadt 378: peeraddr.sin_port = port;
1.12 henning 379: sendfile(fd, cp, mode);
380: free(cp);
1.1 deraadt 381: }
382: }
383:
384: static void
1.14 deraadt 385: putusage(char *s)
1.1 deraadt 386: {
1.19 jmc 387: printf("usage: %s file [[host:]remotename]\n", s);
388: printf(" %s file1 file2 ... fileN [[host:]remote-directory]\n", s);
1.1 deraadt 389: }
390:
391: /*
392: * Receive file(s).
393: */
394: void
1.14 deraadt 395: get(int argc, char *argv[])
1.1 deraadt 396: {
397: int fd;
1.9 mpech 398: int n;
399: char *cp;
1.1 deraadt 400: char *src;
401:
402: if (argc < 2) {
1.11 deraadt 403: strlcpy(line, "get ", sizeof line);
1.1 deraadt 404: printf("(files) ");
405: fgets(&line[strlen(line)], LBUFLEN-strlen(line), stdin);
1.5 deraadt 406: if (makeargv())
407: return;
1.1 deraadt 408: argc = margc;
409: argv = margv;
410: }
411: if (argc < 2) {
412: getusage(argv[0]);
413: return;
414: }
415: if (!connected) {
416: for (n = 1; n < argc ; n++)
1.4 millert 417: if (strchr(argv[n], ':') == 0) {
1.1 deraadt 418: getusage(argv[0]);
419: return;
420: }
421: }
422: for (n = 1; n < argc ; n++) {
1.4 millert 423: src = strchr(argv[n], ':');
1.1 deraadt 424: if (src == NULL)
425: src = argv[n];
426: else {
427: struct hostent *hp;
428:
429: *src++ = 0;
430: hp = gethostbyname(argv[n]);
431: if (hp == NULL) {
1.6 mickey 432: warnx("%s: %s", argv[n], hstrerror(h_errno));
1.1 deraadt 433: continue;
434: }
435: bcopy(hp->h_addr, (caddr_t)&peeraddr.sin_addr,
436: hp->h_length);
437: peeraddr.sin_family = hp->h_addrtype;
438: connected = 1;
1.11 deraadt 439: strlcpy(hostname, hp->h_name, sizeof hostname);
1.1 deraadt 440: }
441: if (argc < 4) {
442: cp = argc == 3 ? argv[2] : tail(src);
443: fd = creat(cp, 0644);
444: if (fd < 0) {
1.6 mickey 445: warn("create: %s", cp);
1.1 deraadt 446: return;
447: }
448: if (verbose)
449: printf("getting from %s:%s to %s [%s]\n",
1.18 deraadt 450: hostname, src, cp, mode);
1.1 deraadt 451: peeraddr.sin_port = port;
452: recvfile(fd, src, mode);
453: break;
454: }
455: cp = tail(src); /* new .. jdg */
456: fd = creat(cp, 0644);
457: if (fd < 0) {
1.6 mickey 458: warn("create: %s", cp);
1.1 deraadt 459: continue;
460: }
461: if (verbose)
462: printf("getting from %s:%s to %s [%s]\n",
1.18 deraadt 463: hostname, src, cp, mode);
1.1 deraadt 464: peeraddr.sin_port = port;
465: recvfile(fd, src, mode);
466: }
467: }
468:
469: static void
1.15 deraadt 470: getusage(char *s)
1.1 deraadt 471: {
1.19 jmc 472: printf("usage: %s [host:]file [localname]\n", s);
473: printf(" %s [host1:]file1 [host2:]file2 ... [hostN:]fileN\n", s);
1.1 deraadt 474: }
475:
476: int rexmtval = TIMEOUT;
477:
478: void
1.14 deraadt 479: setrexmt(int argc, char *argv[])
1.1 deraadt 480: {
481: int t;
482:
483: if (argc < 2) {
1.11 deraadt 484: strlcpy(line, "Rexmt-timeout ", sizeof line);
1.1 deraadt 485: printf("(value) ");
486: fgets(&line[strlen(line)], LBUFLEN-strlen(line), stdin);
1.5 deraadt 487: if (makeargv())
488: return;
1.1 deraadt 489: argc = margc;
490: argv = margv;
491: }
492: if (argc != 2) {
493: printf("usage: %s value\n", argv[0]);
494: return;
495: }
496: t = atoi(argv[1]);
497: if (t < 0)
498: printf("%s: bad value\n", argv[1]);
499: else
500: rexmtval = t;
501: }
502:
503: int maxtimeout = 5 * TIMEOUT;
504:
505: void
1.14 deraadt 506: settimeout(int argc, char *argv[])
1.1 deraadt 507: {
508: int t;
509:
510: if (argc < 2) {
1.11 deraadt 511: strlcpy(line, "Maximum-timeout ", sizeof line);
1.1 deraadt 512: printf("(value) ");
513: fgets(&line[strlen(line)], LBUFLEN-strlen(line), stdin);
1.5 deraadt 514: if (makeargv())
515: return;
1.1 deraadt 516: argc = margc;
517: argv = margv;
518: }
519: if (argc != 2) {
520: printf("usage: %s value\n", argv[0]);
521: return;
522: }
523: t = atoi(argv[1]);
524: if (t < 0)
525: printf("%s: bad value\n", argv[1]);
526: else
527: maxtimeout = t;
528: }
529:
530: void
1.14 deraadt 531: status(int argc, char *argv[])
1.1 deraadt 532: {
533: if (connected)
534: printf("Connected to %s.\n", hostname);
535: else
536: printf("Not connected.\n");
537: printf("Mode: %s Verbose: %s Tracing: %s\n", mode,
538: verbose ? "on" : "off", trace ? "on" : "off");
539: printf("Rexmt-interval: %d seconds, Max-timeout: %d seconds\n",
540: rexmtval, maxtimeout);
541: }
542:
543: void
1.16 deraadt 544: intr(int signo)
1.1 deraadt 545: {
546:
547: signal(SIGALRM, SIG_IGN);
548: alarm(0);
549: longjmp(toplevel, -1);
550: }
551:
552: char *
1.14 deraadt 553: tail(char *filename)
1.1 deraadt 554: {
1.9 mpech 555: char *s;
1.6 mickey 556:
1.1 deraadt 557: while (*filename) {
1.4 millert 558: s = strrchr(filename, '/');
1.1 deraadt 559: if (s == NULL)
560: break;
561: if (s[1])
562: return (s + 1);
563: *s = '\0';
564: }
565: return (filename);
566: }
567:
568: /*
569: * Command parser.
570: */
571: static __dead void
1.14 deraadt 572: command(void)
1.1 deraadt 573: {
1.9 mpech 574: struct cmd *c;
1.1 deraadt 575:
576: for (;;) {
577: printf("%s> ", prompt);
578: if (fgets(line, LBUFLEN, stdin) == 0) {
579: if (feof(stdin)) {
580: exit(0);
581: } else {
582: continue;
583: }
584: }
585: if ((line[0] == 0) || (line[0] == '\n'))
586: continue;
1.5 deraadt 587: if (makeargv())
588: continue;
1.1 deraadt 589: if (margc == 0)
590: continue;
591: c = getcmd(margv[0]);
592: if (c == (struct cmd *)-1) {
593: printf("?Ambiguous command\n");
594: continue;
595: }
596: if (c == 0) {
597: printf("?Invalid command\n");
598: continue;
599: }
600: (*c->handler)(margc, margv);
601: }
602: }
603:
604: struct cmd *
1.14 deraadt 605: getcmd(char *name)
1.1 deraadt 606: {
1.9 mpech 607: char *p, *q;
608: struct cmd *c, *found;
609: int nmatches, longest;
1.1 deraadt 610:
611: longest = 0;
612: nmatches = 0;
613: found = 0;
614: for (c = cmdtab; (p = c->name) != NULL; c++) {
615: for (q = name; *q == *p++; q++)
616: if (*q == 0) /* exact match? */
617: return (c);
618: if (!*q) { /* the name was a prefix */
619: if (q - name > longest) {
620: longest = q - name;
621: nmatches = 1;
622: found = c;
623: } else if (q - name == longest)
624: nmatches++;
625: }
626: }
627: if (nmatches > 1)
628: return ((struct cmd *)-1);
629: return (found);
630: }
631:
632: /*
633: * Slice a string up into argc/argv.
634: */
1.5 deraadt 635: static int
1.14 deraadt 636: makeargv(void)
1.1 deraadt 637: {
1.9 mpech 638: char *cp;
639: char **argp = margv;
1.5 deraadt 640: int ret = 0;
1.1 deraadt 641:
642: margc = 0;
643: for (cp = line; *cp;) {
1.5 deraadt 644: if (margc >= MAXARGV) {
645: printf("too many arguments\n");
646: ret = 1;
647: break;
648: }
1.1 deraadt 649: while (isspace(*cp))
650: cp++;
651: if (*cp == '\0')
652: break;
653: *argp++ = cp;
654: margc += 1;
655: while (*cp != '\0' && !isspace(*cp))
656: cp++;
657: if (*cp == '\0')
658: break;
659: *cp++ = '\0';
660: }
661: *argp++ = 0;
1.5 deraadt 662: return (ret);
1.1 deraadt 663: }
664:
665: void
1.14 deraadt 666: quit(int argc, char *argv[])
1.1 deraadt 667: {
668:
669: exit(0);
670: }
671:
672: /*
673: * Help command.
674: */
675: void
1.14 deraadt 676: help(int argc, char *argv[])
1.1 deraadt 677: {
1.9 mpech 678: struct cmd *c;
1.1 deraadt 679:
680: if (argc == 1) {
681: printf("Commands may be abbreviated. Commands are:\n\n");
1.8 mpech 682: for (c = cmdtab; c->name != NULL; c++)
1.1 deraadt 683: printf("%-*s\t%s\n", (int)HELPINDENT, c->name, c->help);
684: return;
685: }
686: while (--argc > 0) {
1.9 mpech 687: char *arg;
1.1 deraadt 688: arg = *++argv;
689: c = getcmd(arg);
690: if (c == (struct cmd *)-1)
691: printf("?Ambiguous help command %s\n", arg);
692: else if (c == (struct cmd *)0)
693: printf("?Invalid help command %s\n", arg);
694: else
695: printf("%s\n", c->help);
696: }
697: }
698:
699: void
1.14 deraadt 700: settrace(int argc, char *argv[])
1.1 deraadt 701: {
702: trace = !trace;
703: printf("Packet tracing %s.\n", trace ? "on" : "off");
704: }
705:
706: void
1.14 deraadt 707: setverbose(int argc, char *argv[])
1.1 deraadt 708: {
709: verbose = !verbose;
710: printf("Verbose mode %s.\n", verbose ? "on" : "off");
711: }
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