1 /* $NetBSD: main.c,v 1.17 2009/11/15 10:12:37 lukem Exp $ */
2 /* from NetBSD: main.c,v 1.117 2009/07/13 19:05:41 roy Exp */
3
4 /*-
5 * Copyright (c) 1996-2009 The NetBSD Foundation, Inc.
6 * All rights reserved.
7 *
8 * This code is derived from software contributed to The NetBSD Foundation
9 * by Luke Mewburn.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
31 */
32
33 /*
34 * Copyright (c) 1985, 1989, 1993, 1994
35 * The Regents of the University of California. All rights reserved.
36 *
37 * Redistribution and use in source and binary forms, with or without
38 * modification, are permitted provided that the following conditions
39 * are met:
40 * 1. Redistributions of source code must retain the above copyright
41 * notice, this list of conditions and the following disclaimer.
42 * 2. Redistributions in binary form must reproduce the above copyright
43 * notice, this list of conditions and the following disclaimer in the
44 * documentation and/or other materials provided with the distribution.
45 * 3. Neither the name of the University nor the names of its contributors
46 * may be used to endorse or promote products derived from this software
47 * without specific prior written permission.
48 *
49 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
50 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
51 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
52 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
53 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
54 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
55 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
56 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
57 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
58 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
59 * SUCH DAMAGE.
60 */
61
62 /*
63 * Copyright (C) 1997 and 1998 WIDE Project.
64 * All rights reserved.
65 *
66 * Redistribution and use in source and binary forms, with or without
67 * modification, are permitted provided that the following conditions
68 * are met:
69 * 1. Redistributions of source code must retain the above copyright
70 * notice, this list of conditions and the following disclaimer.
71 * 2. Redistributions in binary form must reproduce the above copyright
72 * notice, this list of conditions and the following disclaimer in the
73 * documentation and/or other materials provided with the distribution.
74 * 3. Neither the name of the project nor the names of its contributors
75 * may be used to endorse or promote products derived from this software
76 * without specific prior written permission.
77 *
78 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
79 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
80 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
81 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
82 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
83 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
84 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
85 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
86 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
87 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
88 * SUCH DAMAGE.
89 */
90
91 #include "tnftp.h"
92
93 #if 0 /* tnftp */
94
95 #include <sys/cdefs.h>
96 #ifndef lint
97 __COPYRIGHT("@(#) Copyright (c) 1985, 1989, 1993, 1994\
98 The Regents of the University of California. All rights reserved.\
99 Copyright 1996-2008 The NetBSD Foundation, Inc. All rights reserved");
100 #endif /* not lint */
101
102 #ifndef lint
103 #if 0
104 static char sccsid[] = "@(#)main.c 8.6 (Berkeley) 10/9/94";
105 #else
106 __RCSID(" NetBSD: main.c,v 1.117 2009/07/13 19:05:41 roy Exp ");
107 #endif
108 #endif /* not lint */
109
110 /*
111 * FTP User Program -- Command Interface.
112 */
113 #include <sys/types.h>
114 #include <sys/socket.h>
115
116 #include <err.h>
117 #include <errno.h>
118 #include <netdb.h>
119 #include <paths.h>
120 #include <pwd.h>
121 #include <signal.h>
122 #include <stdio.h>
123 #include <stdlib.h>
124 #include <string.h>
125 #include <time.h>
126 #include <unistd.h>
127 #include <locale.h>
128
129 #endif /* tnftp */
130
131 #define GLOBAL /* force GLOBAL decls in ftp_var.h to be declared */
132 #include "ftp_var.h"
133
134 #define FTP_PROXY "ftp_proxy" /* env var with FTP proxy location */
135 #define HTTP_PROXY "http_proxy" /* env var with HTTP proxy location */
136 #define NO_PROXY "no_proxy" /* env var with list of non-proxied
137 * hosts, comma or space separated */
138
139 static void setupoption(const char *, const char *, const char *);
140 int main(int, char *[]);
141
142 int
main(int volatile argc,char ** volatile argv)143 main(int volatile argc, char **volatile argv)
144 {
145 int ch, rval;
146 struct passwd *pw;
147 char *cp, *ep, *anonpass, *upload_path, *src_addr;
148 const char *anonuser;
149 int dumbterm, isupload;
150 size_t len;
151
152 tzset();
153 #if 0 /* tnftp */ /* XXX */
154 setlocale(LC_ALL, "");
155 #endif /* tnftp */
156 setprogname(argv[0]);
157
158 sigint_raised = 0;
159
160 ftpport = "ftp";
161 httpport = "http";
162 gateport = NULL;
163 cp = getenv("FTPSERVERPORT");
164 if (cp != NULL)
165 gateport = cp;
166 else
167 gateport = "ftpgate";
168 doglob = 1;
169 interactive = 1;
170 autologin = 1;
171 passivemode = 1;
172 activefallback = 1;
173 preserve = 1;
174 verbose = 0;
175 progress = 0;
176 gatemode = 0;
177 data = -1;
178 outfile = NULL;
179 restartautofetch = 0;
180 #ifndef NO_EDITCOMPLETE
181 editing = 0;
182 el = NULL;
183 hist = NULL;
184 #endif
185 bytes = 0;
186 mark = HASHBYTES;
187 rate_get = 0;
188 rate_get_incr = DEFAULTINCR;
189 rate_put = 0;
190 rate_put_incr = DEFAULTINCR;
191 #ifdef INET6
192 epsv4 = 1;
193 epsv6 = 1;
194 #else
195 epsv4 = 0;
196 epsv6 = 0;
197 #endif
198 epsv4bad = 0;
199 epsv6bad = 0;
200 src_addr = NULL;
201 upload_path = NULL;
202 isupload = 0;
203 reply_callback = NULL;
204 #ifdef INET6
205 family = AF_UNSPEC;
206 #else
207 family = AF_INET; /* force AF_INET if no INET6 support */
208 #endif
209
210 netrc[0] = '\0';
211 cp = getenv("NETRC");
212 if (cp != NULL && strlcpy(netrc, cp, sizeof(netrc)) >= sizeof(netrc))
213 errx(1, "$NETRC `%s': %s", cp, strerror(ENAMETOOLONG));
214
215 marg_sl = ftp_sl_init();
216 if ((tmpdir = getenv("TMPDIR")) == NULL)
217 tmpdir = _PATH_TMP;
218
219 /* Set default operation mode based on FTPMODE environment variable */
220 if ((cp = getenv("FTPMODE")) != NULL) {
221 if (strcasecmp(cp, "passive") == 0) {
222 passivemode = 1;
223 activefallback = 0;
224 } else if (strcasecmp(cp, "active") == 0) {
225 passivemode = 0;
226 activefallback = 0;
227 } else if (strcasecmp(cp, "gate") == 0) {
228 gatemode = 1;
229 } else if (strcasecmp(cp, "auto") == 0) {
230 passivemode = 1;
231 activefallback = 1;
232 } else
233 warnx("Unknown $FTPMODE `%s'; using defaults", cp);
234 }
235
236 if (strcmp(getprogname(), "pftp") == 0) {
237 passivemode = 1;
238 activefallback = 0;
239 } else if (strcmp(getprogname(), "gate-ftp") == 0)
240 gatemode = 1;
241
242 gateserver = getenv("FTPSERVER");
243 if (gateserver == NULL || *gateserver == '\0')
244 gateserver = GATE_SERVER;
245 if (gatemode) {
246 if (*gateserver == '\0') {
247 warnx(
248 "Neither $FTPSERVER nor GATE_SERVER is defined; disabling gate-ftp");
249 gatemode = 0;
250 }
251 }
252
253 cp = getenv("TERM");
254 if (cp == NULL || strcmp(cp, "dumb") == 0)
255 dumbterm = 1;
256 else
257 dumbterm = 0;
258 fromatty = isatty(fileno(stdin));
259 ttyout = stdout;
260 if (isatty(fileno(ttyout))) {
261 verbose = 1; /* verbose if to a tty */
262 if (! dumbterm) {
263 #ifndef NO_EDITCOMPLETE
264 if (fromatty) /* editing mode on if tty is usable */
265 editing = 1;
266 #endif
267 #ifndef NO_PROGRESS
268 if (foregroundproc())
269 progress = 1; /* progress bar on if fg */
270 #endif
271 }
272 }
273
274 while ((ch = getopt(argc, argv, "46AadefginN:o:pP:q:r:Rs:tT:u:vV")) != -1) {
275 switch (ch) {
276 case '4':
277 family = AF_INET;
278 break;
279
280 case '6':
281 #ifdef INET6
282 family = AF_INET6;
283 #else
284 warnx("INET6 support is not available; ignoring -6");
285 #endif
286 break;
287
288 case 'A':
289 activefallback = 0;
290 passivemode = 0;
291 break;
292
293 case 'a':
294 anonftp = 1;
295 break;
296
297 case 'd':
298 options |= SO_DEBUG;
299 ftp_debug++;
300 break;
301
302 case 'e':
303 #ifndef NO_EDITCOMPLETE
304 editing = 0;
305 #endif
306 break;
307
308 case 'f':
309 flushcache = 1;
310 break;
311
312 case 'g':
313 doglob = 0;
314 break;
315
316 case 'i':
317 interactive = 0;
318 break;
319
320 case 'n':
321 autologin = 0;
322 break;
323
324 case 'N':
325 if (strlcpy(netrc, optarg, sizeof(netrc))
326 >= sizeof(netrc))
327 errx(1, "%s: %s", optarg,
328 strerror(ENAMETOOLONG));
329 break;
330
331 case 'o':
332 outfile = optarg;
333 if (strcmp(outfile, "-") == 0)
334 ttyout = stderr;
335 break;
336
337 case 'p':
338 passivemode = 1;
339 activefallback = 0;
340 break;
341
342 case 'P':
343 ftpport = optarg;
344 break;
345
346 case 'q':
347 quit_time = strtol(optarg, &ep, 10);
348 if (quit_time < 1 || *ep != '\0')
349 errx(1, "Bad quit value: %s", optarg);
350 break;
351
352 case 'r':
353 retry_connect = strtol(optarg, &ep, 10);
354 if (retry_connect < 1 || *ep != '\0')
355 errx(1, "Bad retry value: %s", optarg);
356 break;
357
358 case 'R':
359 restartautofetch = 1;
360 break;
361
362 case 's':
363 src_addr = optarg;
364 break;
365
366 case 't':
367 trace = 1;
368 break;
369
370 case 'T':
371 {
372 int targc;
373 char *targv[6], *oac;
374 char cmdbuf[MAX_C_NAME];
375
376 /* look for `dir,max[,incr]' */
377 targc = 0;
378 (void)strlcpy(cmdbuf, "-T", sizeof(cmdbuf));
379 targv[targc++] = cmdbuf;
380 oac = ftp_strdup(optarg);
381
382 while ((cp = strsep(&oac, ",")) != NULL) {
383 if (*cp == '\0') {
384 warnx("Bad throttle value `%s'",
385 optarg);
386 usage();
387 /* NOTREACHED */
388 }
389 targv[targc++] = cp;
390 if (targc >= 5)
391 break;
392 }
393 if (parserate(targc, targv, 1) == -1)
394 usage();
395 free(oac);
396 break;
397 }
398
399 case 'u':
400 {
401 isupload = 1;
402 interactive = 0;
403 upload_path = ftp_strdup(optarg);
404
405 break;
406 }
407
408 case 'v':
409 progress = verbose = 1;
410 break;
411
412 case 'V':
413 progress = verbose = 0;
414 break;
415
416 default:
417 usage();
418 }
419 }
420 /* set line buffering on ttyout */
421 setvbuf(ttyout, NULL, _IOLBF, 0);
422 argc -= optind;
423 argv += optind;
424
425 cpend = 0; /* no pending replies */
426 proxy = 0; /* proxy not active */
427 crflag = 1; /* strip c.r. on ascii gets */
428 sendport = -1; /* not using ports */
429
430 if (src_addr != NULL) {
431 struct addrinfo hints;
432 int error;
433
434 memset(&hints, 0, sizeof(hints));
435 hints.ai_family = family;
436 hints.ai_socktype = SOCK_STREAM;
437 hints.ai_flags = AI_PASSIVE;
438 error = getaddrinfo(src_addr, NULL, &hints, &bindai);
439 if (error) {
440 errx(1, "Can't lookup `%s': %s", src_addr,
441 (error == EAI_SYSTEM) ? strerror(errno)
442 : gai_strerror(error));
443 }
444 }
445
446 /*
447 * Cache the user name and home directory.
448 */
449 localhome = NULL;
450 localname = NULL;
451 anonuser = "anonymous";
452 cp = getenv("HOME");
453 if (! EMPTYSTRING(cp))
454 localhome = ftp_strdup(cp);
455 pw = NULL;
456 cp = getlogin();
457 if (cp != NULL)
458 pw = getpwnam(cp);
459 if (pw == NULL)
460 pw = getpwuid(getuid());
461 if (pw != NULL) {
462 if (localhome == NULL && !EMPTYSTRING(pw->pw_dir))
463 localhome = ftp_strdup(pw->pw_dir);
464 localname = ftp_strdup(pw->pw_name);
465 anonuser = localname;
466 }
467 if (netrc[0] == '\0' && localhome != NULL) {
468 if (strlcpy(netrc, localhome, sizeof(netrc)) >= sizeof(netrc) ||
469 strlcat(netrc, "/.netrc", sizeof(netrc)) >= sizeof(netrc)) {
470 warnx("%s/.netrc: %s", localhome,
471 strerror(ENAMETOOLONG));
472 netrc[0] = '\0';
473 }
474 }
475 if (localhome == NULL)
476 localhome = ftp_strdup("/");
477
478 /*
479 * Every anonymous FTP server I've encountered will accept the
480 * string "username@", and will append the hostname itself. We
481 * do this by default since many servers are picky about not
482 * having a FQDN in the anonymous password.
483 * - thorpej@NetBSD.org
484 */
485 len = strlen(anonuser) + 2;
486 anonpass = ftp_malloc(len);
487 (void)strlcpy(anonpass, anonuser, len);
488 (void)strlcat(anonpass, "@", len);
489
490 /*
491 * set all the defaults for options defined in
492 * struct option optiontab[] declared in cmdtab.c
493 */
494 setupoption("anonpass", getenv("FTPANONPASS"), anonpass);
495 setupoption("ftp_proxy", getenv(FTP_PROXY), "");
496 setupoption("http_proxy", getenv(HTTP_PROXY), "");
497 setupoption("no_proxy", getenv(NO_PROXY), "");
498 setupoption("pager", getenv("PAGER"), DEFAULTPAGER);
499 setupoption("prompt", getenv("FTPPROMPT"), DEFAULTPROMPT);
500 setupoption("rprompt", getenv("FTPRPROMPT"), DEFAULTRPROMPT);
501
502 free(anonpass);
503
504 setttywidth(0);
505 #ifdef SIGINFO
506 (void)xsignal(SIGINFO, psummary);
507 #endif
508 (void)xsignal(SIGQUIT, psummary);
509 (void)xsignal(SIGUSR1, crankrate);
510 (void)xsignal(SIGUSR2, crankrate);
511 (void)xsignal(SIGWINCH, setttywidth);
512
513 if (argc > 0) {
514 if (isupload) {
515 rval = auto_put(argc, argv, upload_path);
516 sigint_or_rval_exit:
517 if (sigint_raised) {
518 (void)xsignal(SIGINT, SIG_DFL);
519 raise(SIGINT);
520 }
521 exit(rval);
522 } else if (strchr(argv[0], ':') != NULL
523 && ! isipv6addr(argv[0])) {
524 rval = auto_fetch(argc, argv);
525 if (rval >= 0) /* -1 == connected and cd-ed */
526 goto sigint_or_rval_exit;
527 } else {
528 char *xargv[4], *uuser, *host;
529 char cmdbuf[MAXPATHLEN];
530
531 if ((rval = sigsetjmp(toplevel, 1)))
532 goto sigint_or_rval_exit;
533 (void)xsignal(SIGINT, intr);
534 (void)xsignal(SIGPIPE, lostpeer);
535 uuser = NULL;
536 host = argv[0];
537 cp = strchr(host, '@');
538 if (cp) {
539 *cp = '\0';
540 uuser = host;
541 host = cp + 1;
542 }
543 (void)strlcpy(cmdbuf, getprogname(), sizeof(cmdbuf));
544 xargv[0] = cmdbuf;
545 xargv[1] = host;
546 xargv[2] = argv[1];
547 xargv[3] = NULL;
548 do {
549 int oautologin;
550
551 oautologin = autologin;
552 if (uuser != NULL) {
553 anonftp = 0;
554 autologin = 0;
555 }
556 setpeer(argc+1, xargv);
557 autologin = oautologin;
558 if (connected == 1 && uuser != NULL)
559 (void)ftp_login(host, uuser, NULL);
560 if (!retry_connect)
561 break;
562 if (!connected) {
563 macnum = 0;
564 fprintf(ttyout,
565 "Retrying in %d seconds...\n",
566 retry_connect);
567 sleep(retry_connect);
568 }
569 } while (!connected);
570 retry_connect = 0; /* connected, stop hiding msgs */
571 }
572 }
573 if (isupload)
574 usage();
575
576 #ifndef NO_EDITCOMPLETE
577 controlediting();
578 #endif /* !NO_EDITCOMPLETE */
579
580 (void)sigsetjmp(toplevel, 1);
581 (void)xsignal(SIGINT, intr);
582 (void)xsignal(SIGPIPE, lostpeer);
583 for (;;)
584 cmdscanner();
585 }
586
587 /*
588 * Generate a prompt
589 */
590 char *
prompt(void)591 prompt(void)
592 {
593 static char **promptopt;
594 static char buf[MAXPATHLEN];
595
596 if (promptopt == NULL) {
597 struct option *o;
598
599 o = getoption("prompt");
600 if (o == NULL)
601 errx(1, "prompt: no such option `prompt'");
602 promptopt = &(o->value);
603 }
604 formatbuf(buf, sizeof(buf), *promptopt ? *promptopt : DEFAULTPROMPT);
605 return (buf);
606 }
607
608 /*
609 * Generate an rprompt
610 */
611 char *
rprompt(void)612 rprompt(void)
613 {
614 static char **rpromptopt;
615 static char buf[MAXPATHLEN];
616
617 if (rpromptopt == NULL) {
618 struct option *o;
619
620 o = getoption("rprompt");
621 if (o == NULL)
622 errx(1, "rprompt: no such option `rprompt'");
623 rpromptopt = &(o->value);
624 }
625 formatbuf(buf, sizeof(buf), *rpromptopt ? *rpromptopt : DEFAULTRPROMPT);
626 return (buf);
627 }
628
629 /*
630 * Command parser.
631 */
632 void
cmdscanner(void)633 cmdscanner(void)
634 {
635 struct cmd *c;
636 char *p;
637 #ifndef NO_EDITCOMPLETE
638 int ch;
639 size_t num;
640 #endif
641 int len;
642 char cmdbuf[MAX_C_NAME];
643
644 for (;;) {
645 #ifndef NO_EDITCOMPLETE
646 if (!editing) {
647 #endif /* !NO_EDITCOMPLETE */
648 if (fromatty) {
649 fputs(prompt(), ttyout);
650 p = rprompt();
651 if (*p)
652 fprintf(ttyout, "%s ", p);
653 }
654 (void)fflush(ttyout);
655 len = get_line(stdin, line, sizeof(line), NULL);
656 switch (len) {
657 case -1: /* EOF */
658 case -2: /* error */
659 if (fromatty)
660 putc('\n', ttyout);
661 quit(0, NULL);
662 /* NOTREACHED */
663 case -3: /* too long; try again */
664 fputs("Sorry, input line is too long.\n",
665 ttyout);
666 continue;
667 case 0: /* empty; try again */
668 continue;
669 default: /* all ok */
670 break;
671 }
672 #ifndef NO_EDITCOMPLETE
673 } else {
674 const char *buf;
675 HistEvent ev;
676 cursor_pos = NULL;
677
678 buf = el_gets(el, &ch);
679 num = ch;
680 if (buf == NULL || num == 0) {
681 if (fromatty)
682 putc('\n', ttyout);
683 quit(0, NULL);
684 }
685 if (num >= sizeof(line)) {
686 fputs("Sorry, input line is too long.\n",
687 ttyout);
688 break;
689 }
690 memcpy(line, buf, num);
691 if (line[--num] == '\n') {
692 line[num] = '\0';
693 if (num == 0)
694 break;
695 }
696 history(hist, &ev, H_ENTER, buf);
697 }
698 #endif /* !NO_EDITCOMPLETE */
699
700 makeargv();
701 if (margc == 0)
702 continue;
703 c = getcmd(margv[0]);
704 if (c == (struct cmd *)-1) {
705 fputs("?Ambiguous command.\n", ttyout);
706 continue;
707 }
708 if (c == NULL) {
709 #if !defined(NO_EDITCOMPLETE)
710 /*
711 * attempt to el_parse() unknown commands.
712 * any command containing a ':' would be parsed
713 * as "[prog:]cmd ...", and will result in a
714 * false positive if prog != "ftp", so treat
715 * such commands as invalid.
716 */
717 if (strchr(margv[0], ':') != NULL ||
718 !editing ||
719 el_parse(el, margc, (const char **)margv) != 0)
720 #endif /* !NO_EDITCOMPLETE */
721 fputs("?Invalid command.\n", ttyout);
722 continue;
723 }
724 if (c->c_conn && !connected) {
725 fputs("Not connected.\n", ttyout);
726 continue;
727 }
728 confirmrest = 0;
729 (void)strlcpy(cmdbuf, c->c_name, sizeof(cmdbuf));
730 margv[0] = cmdbuf;
731 (*c->c_handler)(margc, margv);
732 if (bell && c->c_bell)
733 (void)putc('\007', ttyout);
734 if (c->c_handler != help)
735 break;
736 }
737 (void)xsignal(SIGINT, intr);
738 (void)xsignal(SIGPIPE, lostpeer);
739 }
740
741 struct cmd *
getcmd(const char * name)742 getcmd(const char *name)
743 {
744 const char *p, *q;
745 struct cmd *c, *found;
746 int nmatches, longest;
747
748 if (name == NULL)
749 return (0);
750
751 longest = 0;
752 nmatches = 0;
753 found = 0;
754 for (c = cmdtab; (p = c->c_name) != NULL; c++) {
755 for (q = name; *q == *p++; q++)
756 if (*q == 0) /* exact match? */
757 return (c);
758 if (!*q) { /* the name was a prefix */
759 if (q - name > longest) {
760 longest = q - name;
761 nmatches = 1;
762 found = c;
763 } else if (q - name == longest)
764 nmatches++;
765 }
766 }
767 if (nmatches > 1)
768 return ((struct cmd *)-1);
769 return (found);
770 }
771
772 /*
773 * Slice a string up into argc/argv.
774 */
775
776 int slrflag;
777
778 void
makeargv(void)779 makeargv(void)
780 {
781 char *argp;
782
783 stringbase = line; /* scan from first of buffer */
784 argbase = argbuf; /* store from first of buffer */
785 slrflag = 0;
786 marg_sl->sl_cur = 0; /* reset to start of marg_sl */
787 for (margc = 0; ; margc++) {
788 argp = slurpstring();
789 ftp_sl_add(marg_sl, argp);
790 if (argp == NULL)
791 break;
792 }
793 #ifndef NO_EDITCOMPLETE
794 if (cursor_pos == line) {
795 cursor_argc = 0;
796 cursor_argo = 0;
797 } else if (cursor_pos != NULL) {
798 cursor_argc = margc;
799 cursor_argo = strlen(margv[margc-1]);
800 }
801 #endif /* !NO_EDITCOMPLETE */
802 }
803
804 #ifdef NO_EDITCOMPLETE
805 #define INC_CHKCURSOR(x) (x)++
806 #else /* !NO_EDITCOMPLETE */
807 #define INC_CHKCURSOR(x) { (x)++ ; \
808 if (x == cursor_pos) { \
809 cursor_argc = margc; \
810 cursor_argo = ap-argbase; \
811 cursor_pos = NULL; \
812 } }
813
814 #endif /* !NO_EDITCOMPLETE */
815
816 /*
817 * Parse string into argbuf;
818 * implemented with FSM to
819 * handle quoting and strings
820 */
821 char *
slurpstring(void)822 slurpstring(void)
823 {
824 static char bangstr[2] = { '!', '\0' };
825 static char dollarstr[2] = { '$', '\0' };
826 int got_one = 0;
827 char *sb = stringbase;
828 char *ap = argbase;
829 char *tmp = argbase; /* will return this if token found */
830
831 if (*sb == '!' || *sb == '$') { /* recognize ! as a token for shell */
832 switch (slrflag) { /* and $ as token for macro invoke */
833 case 0:
834 slrflag++;
835 INC_CHKCURSOR(stringbase);
836 return ((*sb == '!') ? bangstr : dollarstr);
837 /* NOTREACHED */
838 case 1:
839 slrflag++;
840 altarg = stringbase;
841 break;
842 default:
843 break;
844 }
845 }
846
847 S0:
848 switch (*sb) {
849
850 case '\0':
851 goto OUT;
852
853 case ' ':
854 case '\t':
855 INC_CHKCURSOR(sb);
856 goto S0;
857
858 default:
859 switch (slrflag) {
860 case 0:
861 slrflag++;
862 break;
863 case 1:
864 slrflag++;
865 altarg = sb;
866 break;
867 default:
868 break;
869 }
870 goto S1;
871 }
872
873 S1:
874 switch (*sb) {
875
876 case ' ':
877 case '\t':
878 case '\0':
879 goto OUT; /* end of token */
880
881 case '\\':
882 INC_CHKCURSOR(sb);
883 goto S2; /* slurp next character */
884
885 case '"':
886 INC_CHKCURSOR(sb);
887 goto S3; /* slurp quoted string */
888
889 default:
890 *ap = *sb; /* add character to token */
891 ap++;
892 INC_CHKCURSOR(sb);
893 got_one = 1;
894 goto S1;
895 }
896
897 S2:
898 switch (*sb) {
899
900 case '\0':
901 goto OUT;
902
903 default:
904 *ap = *sb;
905 ap++;
906 INC_CHKCURSOR(sb);
907 got_one = 1;
908 goto S1;
909 }
910
911 S3:
912 switch (*sb) {
913
914 case '\0':
915 goto OUT;
916
917 case '"':
918 INC_CHKCURSOR(sb);
919 goto S1;
920
921 default:
922 *ap = *sb;
923 ap++;
924 INC_CHKCURSOR(sb);
925 got_one = 1;
926 goto S3;
927 }
928
929 OUT:
930 if (got_one)
931 *ap++ = '\0';
932 argbase = ap; /* update storage pointer */
933 stringbase = sb; /* update scan pointer */
934 if (got_one) {
935 return (tmp);
936 }
937 switch (slrflag) {
938 case 0:
939 slrflag++;
940 break;
941 case 1:
942 slrflag++;
943 altarg = NULL;
944 break;
945 default:
946 break;
947 }
948 return (NULL);
949 }
950
951 /*
952 * Help/usage command.
953 * Call each command handler with argc == 0 and argv[0] == name.
954 */
955 void
help(int argc,char * argv[])956 help(int argc, char *argv[])
957 {
958 struct cmd *c;
959 char *nargv[1], *cmd;
960 const char *p;
961 int isusage;
962
963 cmd = argv[0];
964 isusage = (strcmp(cmd, "usage") == 0);
965 if (argc == 0 || (isusage && argc == 1)) {
966 UPRINTF("usage: %s [command [...]]\n", cmd);
967 return;
968 }
969 if (argc == 1) {
970 StringList *buf;
971
972 buf = ftp_sl_init();
973 fprintf(ttyout,
974 "%sommands may be abbreviated. Commands are:\n\n",
975 proxy ? "Proxy c" : "C");
976 for (c = cmdtab; (p = c->c_name) != NULL; c++)
977 if (!proxy || c->c_proxy)
978 ftp_sl_add(buf, ftp_strdup(p));
979 list_vertical(buf);
980 sl_free(buf, 1);
981 return;
982 }
983
984 #define HELPINDENT ((int) sizeof("disconnect"))
985
986 while (--argc > 0) {
987 char *arg;
988 char cmdbuf[MAX_C_NAME];
989
990 arg = *++argv;
991 c = getcmd(arg);
992 if (c == (struct cmd *)-1)
993 fprintf(ttyout, "?Ambiguous %s command `%s'\n",
994 cmd, arg);
995 else if (c == NULL)
996 fprintf(ttyout, "?Invalid %s command `%s'\n",
997 cmd, arg);
998 else {
999 if (isusage) {
1000 (void)strlcpy(cmdbuf, c->c_name, sizeof(cmdbuf));
1001 nargv[0] = cmdbuf;
1002 (*c->c_handler)(0, nargv);
1003 } else
1004 fprintf(ttyout, "%-*s\t%s\n", HELPINDENT,
1005 c->c_name, c->c_help);
1006 }
1007 }
1008 }
1009
1010 struct option *
getoption(const char * name)1011 getoption(const char *name)
1012 {
1013 const char *p;
1014 struct option *c;
1015
1016 if (name == NULL)
1017 return (NULL);
1018 for (c = optiontab; (p = c->name) != NULL; c++) {
1019 if (strcasecmp(p, name) == 0)
1020 return (c);
1021 }
1022 return (NULL);
1023 }
1024
1025 char *
getoptionvalue(const char * name)1026 getoptionvalue(const char *name)
1027 {
1028 struct option *c;
1029
1030 if (name == NULL)
1031 errx(1, "getoptionvalue: invoked with NULL name");
1032 c = getoption(name);
1033 if (c != NULL)
1034 return (c->value);
1035 errx(1, "getoptionvalue: invoked with unknown option `%s'", name);
1036 /* NOTREACHED */
1037 }
1038
1039 static void
setupoption(const char * name,const char * value,const char * defaultvalue)1040 setupoption(const char *name, const char *value, const char *defaultvalue)
1041 {
1042 set_option(name, value ? value : defaultvalue, 0);
1043 }
1044
1045 void
usage(void)1046 usage(void)
1047 {
1048 const char *progname = getprogname();
1049
1050 (void)fprintf(stderr,
1051 "usage: %s [-46AadefginpRtVv] [-N netrc] [-o outfile] [-P port] [-q quittime]\n"
1052 " [-r retry] [-s srcaddr] [-T dir,max[,inc]]\n"
1053 " [[user@]host [port]] [host:path[/]] [file:///file]\n"
1054 " [ftp://[user[:pass]@]host[:port]/path[/]]\n"
1055 " [http://[user[:pass]@]host[:port]/path] [...]\n"
1056 " %s -u URL file [...]\n", progname, progname);
1057 exit(1);
1058 }
1059