Commit | Line | Data |
---|---|---|
524aa063 SL |
1 | #ifndef lint |
2 | static char sccsid[] = "@(#)main.c 4.7 (Berkeley) %G%"; | |
3 | #endif | |
c3353d83 SL |
4 | |
5 | /* | |
6 | * TFTP User Program -- Command Interface. | |
7 | */ | |
8 | #include <sys/types.h> | |
c3353d83 | 9 | #include <sys/socket.h> |
61ad9979 | 10 | #include <sys/file.h> |
de3b21e8 SL |
11 | |
12 | #include <netinet/in.h> | |
13 | ||
c3353d83 SL |
14 | #include <signal.h> |
15 | #include <stdio.h> | |
16 | #include <errno.h> | |
17 | #include <setjmp.h> | |
18 | #include <ctype.h> | |
4d5e33bd | 19 | #include <netdb.h> |
c3353d83 | 20 | |
61ad9979 SL |
21 | #define TIMEOUT 5 /* secs between rexmt's */ |
22 | ||
de3b21e8 | 23 | struct sockaddr_in sin; |
c3353d83 | 24 | int f; |
c3353d83 SL |
25 | int trace; |
26 | int verbose; | |
27 | int connected; | |
28 | char mode[32]; | |
29 | char line[200]; | |
30 | int margc; | |
31 | char *margv[20]; | |
32 | char *prompt = "tftp"; | |
33 | jmp_buf toplevel; | |
34 | int intr(); | |
4d5e33bd | 35 | struct servent *sp; |
c3353d83 SL |
36 | |
37 | int quit(), help(), setverbose(), settrace(), status(); | |
61ad9979 | 38 | int get(), put(), setpeer(), setmode(), setrexmt(), settimeout(); |
c3353d83 SL |
39 | |
40 | #define HELPINDENT (sizeof("connect")) | |
41 | ||
42 | struct cmd { | |
43 | char *name; | |
44 | char *help; | |
45 | int (*handler)(); | |
46 | }; | |
47 | ||
48 | char vhelp[] = "toggle verbose mode"; | |
49 | char thelp[] = "toggle packet tracing"; | |
50 | char chelp[] = "connect to remote tftp"; | |
51 | char qhelp[] = "exit tftp"; | |
52 | char hhelp[] = "print help information"; | |
53 | char shelp[] = "send file"; | |
54 | char rhelp[] = "receive file"; | |
55 | char mhelp[] = "set file transfer mode"; | |
56 | char sthelp[] = "show current status"; | |
61ad9979 SL |
57 | char xhelp[] = "set per-packet retransmission timeout"; |
58 | char ihelp[] = "set total retransmission timeout"; | |
c3353d83 SL |
59 | |
60 | struct cmd cmdtab[] = { | |
61 | { "connect", chelp, setpeer }, | |
62 | { "mode", mhelp, setmode }, | |
63 | { "put", shelp, put }, | |
64 | { "get", rhelp, get }, | |
65 | { "quit", qhelp, quit }, | |
66 | { "verbose", vhelp, setverbose }, | |
67 | { "trace", thelp, settrace }, | |
68 | { "status", sthelp, status }, | |
61ad9979 SL |
69 | { "rexmt", xhelp, setrexmt }, |
70 | { "timeout", ihelp, settimeout }, | |
c3353d83 SL |
71 | { "?", hhelp, help }, |
72 | 0 | |
73 | }; | |
74 | ||
75 | struct cmd *getcmd(); | |
76 | char *tail(); | |
77 | char *index(); | |
78 | char *rindex(); | |
79 | ||
80 | main(argc, argv) | |
81 | char *argv[]; | |
82 | { | |
61ad9979 SL |
83 | struct sockaddr_in sin; |
84 | int top; | |
85 | ||
4d5e33bd SL |
86 | sp = getservbyname("tftp", "udp"); |
87 | if (sp == 0) { | |
88 | fprintf(stderr, "tftp: udp/tftp: unknown service\n"); | |
89 | exit(1); | |
90 | } | |
85b11450 | 91 | f = socket(AF_INET, SOCK_DGRAM, 0, 0); |
c3353d83 | 92 | if (f < 0) { |
61ad9979 | 93 | perror("tftp: socket"); |
c3353d83 SL |
94 | exit(3); |
95 | } | |
61ad9979 SL |
96 | bzero((char *)&sin, sizeof (sin)); |
97 | sin.sin_family = AF_INET; | |
98 | if (bind(f, &sin, sizeof (sin)) < 0) { | |
99 | perror("tftp: bind"); | |
100 | exit(1); | |
101 | } | |
c3353d83 | 102 | strcpy(mode, "netascii"); |
61ad9979 | 103 | signal(SIGINT, intr); |
c3353d83 SL |
104 | if (argc > 1) { |
105 | if (setjmp(toplevel) != 0) | |
106 | exit(0); | |
107 | setpeer(argc, argv); | |
108 | } | |
61ad9979 | 109 | top = setjmp(toplevel) == 0; |
c3353d83 | 110 | for (;;) |
61ad9979 | 111 | command(top); |
c3353d83 SL |
112 | } |
113 | ||
4d5e33bd SL |
114 | char *hostname; |
115 | char hnamebuf[32]; | |
c3353d83 SL |
116 | |
117 | setpeer(argc, argv) | |
118 | int argc; | |
119 | char *argv[]; | |
120 | { | |
121 | register int c; | |
4d5e33bd | 122 | struct hostent *host; |
c3353d83 SL |
123 | |
124 | if (argc < 2) { | |
125 | strcpy(line, "Connect "); | |
126 | printf("(to) "); | |
127 | gets(&line[strlen(line)]); | |
128 | makeargv(); | |
129 | argc = margc; | |
130 | argv = margv; | |
131 | } | |
132 | if (argc > 3) { | |
133 | printf("usage: %s host-name [port]\n", argv[0]); | |
134 | return; | |
135 | } | |
4d5e33bd SL |
136 | host = gethostbyname(argv[1]); |
137 | if (host) { | |
de3b21e8 | 138 | sin.sin_family = host->h_addrtype; |
4d5e33bd SL |
139 | bcopy(host->h_addr, &sin.sin_addr, host->h_length); |
140 | hostname = host->h_name; | |
141 | } else { | |
de3b21e8 | 142 | sin.sin_family = AF_INET; |
4d5e33bd SL |
143 | sin.sin_addr.s_addr = inet_addr(argv[1]); |
144 | if (sin.sin_addr.s_addr == -1) { | |
145 | connected = 0; | |
146 | printf("%s: unknown host\n", argv[1]); | |
147 | return; | |
148 | } | |
149 | strcpy(hnamebuf, argv[1]); | |
150 | hostname = hnamebuf; | |
c3353d83 | 151 | } |
4d5e33bd | 152 | sin.sin_port = sp->s_port; |
c3353d83 SL |
153 | if (argc == 3) { |
154 | sin.sin_port = atoi(argv[2]); | |
155 | if (sin.sin_port < 0) { | |
156 | printf("%s: bad port number\n", argv[2]); | |
157 | connected = 0; | |
158 | return; | |
159 | } | |
26d9d18d | 160 | sin.sin_port = htons((u_short)sin.sin_port); |
4d5e33bd | 161 | } |
c3353d83 SL |
162 | connected = 1; |
163 | } | |
164 | ||
165 | struct modes { | |
166 | char *m_name; | |
167 | char *m_mode; | |
168 | } modes[] = { | |
169 | { "ascii", "netascii" }, | |
170 | { "binary", "octect" }, | |
171 | { "mail", "mail" }, | |
172 | { 0, 0 } | |
173 | }; | |
174 | ||
175 | setmode(argc, argv) | |
176 | char *argv[]; | |
177 | { | |
178 | register struct modes *p; | |
179 | ||
180 | if (argc > 2) { | |
181 | char *sep; | |
182 | ||
183 | printf("usage: %s [", argv[0]); | |
184 | sep = " "; | |
185 | for (p = modes; p->m_name; p++) { | |
186 | printf("%s%s", sep, p->m_name); | |
187 | if (*sep == ' ') | |
188 | sep = " | "; | |
189 | } | |
190 | printf(" ]\n"); | |
191 | return; | |
192 | } | |
193 | if (argc < 2) { | |
194 | printf("Using %s mode to transfer files.\n", mode); | |
195 | return; | |
196 | } | |
197 | for (p = modes; p->m_name; p++) | |
198 | if (strcmp(argv[1], p->m_name) == 0) | |
199 | break; | |
200 | if (p->m_name) | |
201 | strcpy(mode, p->m_mode); | |
202 | else | |
203 | printf("%s: unknown mode\n", argv[1]); | |
204 | } | |
205 | ||
206 | /* | |
207 | * Send file(s). | |
208 | */ | |
209 | put(argc, argv) | |
210 | char *argv[]; | |
211 | { | |
212 | int fd; | |
213 | register int n, addr; | |
214 | register char *cp, *targ; | |
215 | ||
216 | if (argc < 2) { | |
217 | strcpy(line, "send "); | |
218 | printf("(file) "); | |
219 | gets(&line[strlen(line)]); | |
220 | makeargv(); | |
221 | argc = margc; | |
222 | argv = margv; | |
223 | } | |
224 | if (argc < 2) { | |
225 | putusage(argv[0]); | |
226 | return; | |
227 | } | |
228 | targ = argv[argc - 1]; | |
229 | if (index(argv[argc - 1], ':')) { | |
4d5e33bd SL |
230 | char *cp; |
231 | struct hostent *hp; | |
c3353d83 SL |
232 | |
233 | for (n = 1; n < argc - 1; n++) | |
234 | if (index(argv[n], ':')) { | |
235 | putusage(argv[0]); | |
236 | return; | |
237 | } | |
4d5e33bd SL |
238 | cp = argv[argc - 1]; |
239 | targ = index(cp, ':'); | |
c3353d83 | 240 | *targ++ = 0; |
4d5e33bd SL |
241 | hp = gethostbyname(cp); |
242 | if (hp == 0) { | |
243 | printf("%s: Unknown host.\n", cp); | |
c3353d83 SL |
244 | return; |
245 | } | |
de3b21e8 | 246 | bcopy(hp->h_addr, (caddr_t)&sin.sin_addr, hp->h_length); |
4d5e33bd | 247 | sin.sin_family = hp->h_addrtype; |
c3353d83 | 248 | connected = 1; |
4d5e33bd | 249 | hostname = hp->h_name; |
c3353d83 SL |
250 | } |
251 | if (!connected) { | |
252 | printf("No target machine specified.\n"); | |
253 | return; | |
254 | } | |
c3353d83 SL |
255 | if (argc < 4) { |
256 | cp = argc == 2 ? tail(targ) : argv[1]; | |
61ad9979 | 257 | fd = open(cp, O_RDONLY); |
c3353d83 | 258 | if (fd < 0) { |
61ad9979 | 259 | fprintf(stderr, "tftp: "); perror(cp); |
c3353d83 SL |
260 | return; |
261 | } | |
262 | sendfile(fd, targ); | |
263 | return; | |
264 | } | |
265 | cp = index(targ, '\0'); | |
266 | *cp++ = '/'; | |
267 | for (n = 1; n < argc - 1; n++) { | |
268 | strcpy(cp, tail(argv[n])); | |
61ad9979 | 269 | fd = open(argv[n], O_RDONLY); |
c3353d83 | 270 | if (fd < 0) { |
61ad9979 | 271 | fprintf(stderr, "tftp: "); perror(argv[n]); |
c3353d83 SL |
272 | continue; |
273 | } | |
274 | sendfile(fd, targ); | |
275 | } | |
276 | } | |
277 | ||
278 | putusage(s) | |
279 | char *s; | |
280 | { | |
281 | printf("usage: %s file ... host:target, or\n", s); | |
282 | printf(" %s file ... target (when already connected)\n", s); | |
283 | } | |
284 | ||
285 | /* | |
286 | * Receive file(s). | |
287 | */ | |
288 | get(argc, argv) | |
289 | char *argv[]; | |
290 | { | |
291 | int fd; | |
292 | register int n, addr; | |
293 | register char *cp; | |
294 | char *src; | |
295 | ||
296 | if (argc < 2) { | |
297 | strcpy(line, "get "); | |
298 | printf("(files) "); | |
299 | gets(&line[strlen(line)]); | |
300 | makeargv(); | |
301 | argc = margc; | |
302 | argv = margv; | |
303 | } | |
304 | if (argc < 2) { | |
305 | getusage(argv[0]); | |
306 | return; | |
307 | } | |
308 | if (!connected) | |
309 | for (n = 1; n < argc - 1; n++) | |
310 | if (index(argv[n], ':') == 0) { | |
311 | getusage(argv[0]); | |
312 | return; | |
313 | } | |
c3353d83 SL |
314 | for (n = 1; argc == 2 || n < argc - 1; n++) { |
315 | src = index(argv[n], ':'); | |
316 | if (src == NULL) | |
317 | src = argv[n]; | |
318 | else { | |
4d5e33bd SL |
319 | struct hostent *hp; |
320 | ||
c3353d83 | 321 | *src++ = 0; |
4d5e33bd SL |
322 | hp = gethostbyname(argv[n]); |
323 | if (hp == 0) { | |
c3353d83 SL |
324 | printf("%s: Unknown host.\n", argv[n]); |
325 | continue; | |
326 | } | |
de3b21e8 | 327 | bcopy(hp->h_addr, (caddr_t)&sin.sin_addr, hp->h_length); |
4d5e33bd | 328 | sin.sin_family = hp->h_addrtype; |
c3353d83 | 329 | connected = 1; |
4d5e33bd | 330 | hostname = hp->h_name; |
c3353d83 SL |
331 | } |
332 | if (argc < 4) { | |
333 | cp = argc == 3 ? argv[2] : tail(src); | |
334 | fd = creat(cp, 0644); | |
335 | if (fd < 0) { | |
61ad9979 | 336 | fprintf(stderr, "tftp: "); perror(cp); |
c3353d83 SL |
337 | return; |
338 | } | |
339 | recvfile(fd, src); | |
340 | break; | |
341 | } | |
342 | cp = index(argv[argc - 1], '\0'); | |
343 | *cp++ = '/'; | |
344 | strcpy(cp, tail(src)); | |
345 | fd = creat(src, 0644); | |
346 | if (fd < 0) { | |
61ad9979 | 347 | fprintf(stderr, "tftp: "); perror(src); |
c3353d83 SL |
348 | continue; |
349 | } | |
350 | recvfile(fd, src); | |
351 | } | |
352 | } | |
353 | ||
354 | getusage(s) | |
355 | { | |
356 | printf("usage: %s host:file host:file ... file, or\n", s); | |
357 | printf(" %s file file ... file if connected\n", s); | |
358 | } | |
359 | ||
61ad9979 SL |
360 | int rexmtval = TIMEOUT; |
361 | ||
362 | setrexmt(argc, argv) | |
363 | char *argv[]; | |
364 | { | |
365 | int t; | |
366 | ||
367 | if (argc < 2) { | |
368 | strcpy(line, "Rexmt-timeout "); | |
369 | printf("(value) "); | |
370 | gets(&line[strlen(line)]); | |
371 | makeargv(); | |
372 | argc = margc; | |
373 | argv = margv; | |
374 | } | |
375 | if (argc != 2) { | |
376 | printf("usage: %s value\n", argv[0]); | |
377 | return; | |
378 | } | |
379 | t = atoi(argv[1]); | |
380 | if (t < 0) | |
381 | printf("%s: bad value\n", t); | |
382 | else | |
383 | rexmtval = t; | |
384 | } | |
385 | ||
386 | int maxtimeout = 5 * TIMEOUT; | |
387 | ||
388 | settimeout(argc, argv) | |
389 | char *argv[]; | |
390 | { | |
391 | int t; | |
392 | ||
393 | if (argc < 2) { | |
394 | strcpy(line, "Maximum-timeout "); | |
395 | printf("(value) "); | |
396 | gets(&line[strlen(line)]); | |
397 | makeargv(); | |
398 | argc = margc; | |
399 | argv = margv; | |
400 | } | |
401 | if (argc != 2) { | |
402 | printf("usage: %s value\n", argv[0]); | |
403 | return; | |
404 | } | |
405 | t = atoi(argv[1]); | |
406 | if (t < 0) | |
407 | printf("%s: bad value\n", t); | |
408 | else | |
409 | maxtimeout = t; | |
410 | } | |
411 | ||
c3353d83 SL |
412 | status(argc, argv) |
413 | char *argv[]; | |
414 | { | |
415 | if (connected) | |
4d5e33bd | 416 | printf("Connected to %s.\n", hostname); |
c3353d83 SL |
417 | else |
418 | printf("Not connected.\n"); | |
419 | printf("Mode: %s Verbose: %s Tracing: %s\n", mode, | |
420 | verbose ? "on" : "off", trace ? "on" : "off"); | |
61ad9979 SL |
421 | printf("Rexmt-interval: %d seconds, Max-timeout: %d seconds\n", |
422 | rexmtval, maxtimeout); | |
c3353d83 SL |
423 | } |
424 | ||
425 | intr() | |
426 | { | |
61ad9979 | 427 | |
c3353d83 SL |
428 | longjmp(toplevel, -1); |
429 | } | |
430 | ||
431 | char * | |
432 | tail(filename) | |
433 | char *filename; | |
434 | { | |
435 | register char *s; | |
436 | ||
437 | while (*filename) { | |
438 | s = rindex(filename, '/'); | |
439 | if (s == NULL) | |
440 | break; | |
441 | if (s[1]) | |
442 | return (s + 1); | |
443 | *s = '\0'; | |
444 | } | |
445 | return (filename); | |
446 | } | |
447 | ||
448 | /* | |
449 | * Command parser. | |
450 | */ | |
451 | command(top) | |
452 | int top; | |
453 | { | |
454 | register struct cmd *c; | |
455 | ||
456 | if (!top) | |
457 | putchar('\n'); | |
c3353d83 SL |
458 | for (;;) { |
459 | printf("%s> ", prompt); | |
460 | if (gets(line) == 0) | |
61ad9979 | 461 | continue; |
c3353d83 | 462 | if (line[0] == 0) |
61ad9979 | 463 | continue; |
c3353d83 SL |
464 | makeargv(); |
465 | c = getcmd(margv[0]); | |
466 | if (c == (struct cmd *)-1) { | |
467 | printf("?Ambiguous command\n"); | |
468 | continue; | |
469 | } | |
470 | if (c == 0) { | |
471 | printf("?Invalid command\n"); | |
472 | continue; | |
473 | } | |
474 | (*c->handler)(margc, margv); | |
c3353d83 | 475 | } |
c3353d83 SL |
476 | } |
477 | ||
478 | struct cmd * | |
479 | getcmd(name) | |
480 | register char *name; | |
481 | { | |
482 | register char *p, *q; | |
483 | register struct cmd *c, *found; | |
484 | register int nmatches, longest; | |
485 | ||
486 | longest = 0; | |
487 | nmatches = 0; | |
488 | found = 0; | |
489 | for (c = cmdtab; p = c->name; c++) { | |
490 | for (q = name; *q == *p++; q++) | |
491 | if (*q == 0) /* exact match? */ | |
492 | return (c); | |
493 | if (!*q) { /* the name was a prefix */ | |
494 | if (q - name > longest) { | |
495 | longest = q - name; | |
496 | nmatches = 1; | |
497 | found = c; | |
498 | } else if (q - name == longest) | |
499 | nmatches++; | |
500 | } | |
501 | } | |
502 | if (nmatches > 1) | |
503 | return ((struct cmd *)-1); | |
504 | return (found); | |
505 | } | |
506 | ||
507 | /* | |
508 | * Slice a string up into argc/argv. | |
509 | */ | |
510 | makeargv() | |
511 | { | |
512 | register char *cp; | |
513 | register char **argp = margv; | |
514 | ||
515 | margc = 0; | |
516 | for (cp = line; *cp;) { | |
517 | while (isspace(*cp)) | |
518 | cp++; | |
519 | if (*cp == '\0') | |
520 | break; | |
521 | *argp++ = cp; | |
522 | margc += 1; | |
523 | while (*cp != '\0' && !isspace(*cp)) | |
524 | cp++; | |
525 | if (*cp == '\0') | |
526 | break; | |
527 | *cp++ = '\0'; | |
528 | } | |
529 | *argp++ = 0; | |
530 | } | |
531 | ||
532 | /*VARARGS*/ | |
533 | quit() | |
534 | { | |
535 | exit(0); | |
536 | } | |
537 | ||
538 | /* | |
539 | * Help command. | |
c3353d83 SL |
540 | */ |
541 | help(argc, argv) | |
542 | int argc; | |
543 | char *argv[]; | |
544 | { | |
545 | register struct cmd *c; | |
546 | ||
547 | if (argc == 1) { | |
548 | printf("Commands may be abbreviated. Commands are:\n\n"); | |
549 | for (c = cmdtab; c->name; c++) | |
550 | printf("%-*s\t%s\n", HELPINDENT, c->name, c->help); | |
551 | return; | |
552 | } | |
553 | while (--argc > 0) { | |
554 | register char *arg; | |
555 | arg = *++argv; | |
556 | c = getcmd(arg); | |
557 | if (c == (struct cmd *)-1) | |
558 | printf("?Ambiguous help command %s\n", arg); | |
559 | else if (c == (struct cmd *)0) | |
560 | printf("?Invalid help command %s\n", arg); | |
561 | else | |
562 | printf("%s\n", c->help); | |
563 | } | |
564 | } | |
565 | ||
566 | /* | |
567 | * Call routine with argc, argv set from args (terminated by 0). | |
568 | */ | |
569 | /* VARARGS2 */ | |
570 | call(routine, args) | |
571 | int (*routine)(); | |
572 | int args; | |
573 | { | |
574 | register int *argp; | |
575 | register int argc; | |
576 | ||
577 | for (argc = 0, argp = &args; *argp++ != 0; argc++) | |
578 | ; | |
579 | (*routine)(argc, &args); | |
580 | } | |
581 | ||
582 | /*VARARGS*/ | |
583 | settrace() | |
584 | { | |
585 | trace = !trace; | |
586 | printf("Packet tracing %s.\n", trace ? "on" : "off"); | |
587 | } | |
588 | ||
589 | /*VARARGS*/ | |
590 | setverbose() | |
591 | { | |
592 | verbose = !verbose; | |
593 | printf("Verbose mode %s.\n", verbose ? "on" : "off"); | |
594 | } |