1 /* $NetBSD: main.c,v 1.123 2015/04/23 23:31:23 lukem Exp $ */
2
3 /*-
4 * Copyright (c) 1996-2015 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Luke Mewburn.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 /*
33 * Copyright (c) 1985, 1989, 1993, 1994
34 * The Regents of the University of California. All rights reserved.
35 *
36 * Redistribution and use in source and binary forms, with or without
37 * modification, are permitted provided that the following conditions
38 * are met:
39 * 1. Redistributions of source code must retain the above copyright
40 * notice, this list of conditions and the following disclaimer.
41 * 2. Redistributions in binary form must reproduce the above copyright
42 * notice, this list of conditions and the following disclaimer in the
43 * documentation and/or other materials provided with the distribution.
44 * 3. Neither the name of the University nor the names of its contributors
45 * may be used to endorse or promote products derived from this software
46 * without specific prior written permission.
47 *
48 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
49 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
50 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
51 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
52 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
53 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
54 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
55 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
56 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
57 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
58 * SUCH DAMAGE.
59 */
60
61 /*
62 * Copyright (C) 1997 and 1998 WIDE Project.
63 * All rights reserved.
64 *
65 * Redistribution and use in source and binary forms, with or without
66 * modification, are permitted provided that the following conditions
67 * are met:
68 * 1. Redistributions of source code must retain the above copyright
69 * notice, this list of conditions and the following disclaimer.
70 * 2. Redistributions in binary form must reproduce the above copyright
71 * notice, this list of conditions and the following disclaimer in the
72 * documentation and/or other materials provided with the distribution.
73 * 3. Neither the name of the project nor the names of its contributors
74 * may be used to endorse or promote products derived from this software
75 * without specific prior written permission.
76 *
77 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
78 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
79 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
80 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
81 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
82 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
83 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
84 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
85 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
86 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
87 * SUCH DAMAGE.
88 */
89
90 #include <sys/cdefs.h>
91 #ifndef lint
92 __COPYRIGHT("@(#) Copyright (c) 1985, 1989, 1993, 1994\
93 The Regents of the University of California. All rights reserved.\
94 Copyright 1996-2015 The NetBSD Foundation, Inc. All rights reserved");
95 #endif /* not lint */
96
97 #ifndef lint
98 #if 0
99 static char sccsid[] = "@(#)main.c 8.6 (Berkeley) 10/9/94";
100 #else
101 __RCSID("$NetBSD: main.c,v 1.123 2015/04/23 23:31:23 lukem Exp $");
102 #endif
103 #endif /* not lint */
104
105 /*
106 * FTP User Program -- Command Interface.
107 */
108 #include <sys/types.h>
109 #include <sys/socket.h>
110
111 #include <err.h>
112 #include <errno.h>
113 #include <netdb.h>
114 #include <paths.h>
115 #include <pwd.h>
116 #include <signal.h>
117 #include <stdio.h>
118 #include <stdlib.h>
119 #include <string.h>
120 #include <time.h>
121 #include <unistd.h>
122 #include <locale.h>
123
124 #define GLOBAL /* force GLOBAL decls in ftp_var.h to be declared */
125 #include "ftp_var.h"
126
127 #define FTP_PROXY "ftp_proxy" /* env var with FTP proxy location */
128 #define HTTP_PROXY "http_proxy" /* env var with HTTP proxy location */
129 #define HTTPS_PROXY "https_proxy" /* env var with HTTPS proxy location */
130 #define NO_PROXY "no_proxy" /* env var with list of non-proxied
131 * hosts, comma or space separated */
132
133 __dead static void usage(void);
134 static void setupoption(const char *, const char *, const char *);
135
136 int
main(int volatile argc,char ** volatile argv)137 main(int volatile argc, char **volatile argv)
138 {
139 int ch, rval;
140 struct passwd *pw;
141 char *cp, *ep, *anonpass, *upload_path, *src_addr;
142 const char *anonuser;
143 int dumbterm, isupload;
144 size_t len;
145
146 tzset();
147 setlocale(LC_ALL, "");
148 setprogname(argv[0]);
149
150 sigint_raised = 0;
151
152 ftpport = "ftp";
153 httpport = "http";
154 #ifdef WITH_SSL
155 httpsport = "https";
156 #endif
157 gateport = NULL;
158 cp = getenv("FTPSERVERPORT");
159 if (cp != NULL)
160 gateport = cp;
161 else
162 gateport = "ftpgate";
163 doglob = 1;
164 interactive = 1;
165 autologin = 1;
166 passivemode = 1;
167 activefallback = 1;
168 preserve = 1;
169 verbose = 0;
170 progress = 0;
171 gatemode = 0;
172 data = -1;
173 outfile = NULL;
174 restartautofetch = 0;
175 #ifndef NO_EDITCOMPLETE
176 editing = 0;
177 el = NULL;
178 hist = NULL;
179 #endif
180 bytes = 0;
181 mark = HASHBYTES;
182 rate_get = 0;
183 rate_get_incr = DEFAULTINCR;
184 rate_put = 0;
185 rate_put_incr = DEFAULTINCR;
186 #ifdef INET6
187 epsv4 = 1;
188 epsv6 = 1;
189 #else
190 epsv4 = 0;
191 epsv6 = 0;
192 #endif
193 epsv4bad = 0;
194 epsv6bad = 0;
195 src_addr = NULL;
196 upload_path = NULL;
197 isupload = 0;
198 reply_callback = NULL;
199 #ifdef INET6
200 family = AF_UNSPEC;
201 #else
202 family = AF_INET; /* force AF_INET if no INET6 support */
203 #endif
204
205 netrc[0] = '\0';
206 cp = getenv("NETRC");
207 if (cp != NULL && strlcpy(netrc, cp, sizeof(netrc)) >= sizeof(netrc))
208 errx(1, "$NETRC `%s': %s", cp, strerror(ENAMETOOLONG));
209
210 marg_sl = ftp_sl_init();
211 if ((tmpdir = getenv("TMPDIR")) == NULL)
212 tmpdir = _PATH_TMP;
213
214 /* Set default operation mode based on FTPMODE environment variable */
215 if ((cp = getenv("FTPMODE")) != NULL) {
216 if (strcasecmp(cp, "passive") == 0) {
217 passivemode = 1;
218 activefallback = 0;
219 } else if (strcasecmp(cp, "active") == 0) {
220 passivemode = 0;
221 activefallback = 0;
222 } else if (strcasecmp(cp, "gate") == 0) {
223 gatemode = 1;
224 } else if (strcasecmp(cp, "auto") == 0) {
225 passivemode = 1;
226 activefallback = 1;
227 } else
228 warnx("Unknown $FTPMODE `%s'; using defaults", cp);
229 }
230
231 if (strcmp(getprogname(), "pftp") == 0) {
232 passivemode = 1;
233 activefallback = 0;
234 } else if (strcmp(getprogname(), "gate-ftp") == 0)
235 gatemode = 1;
236
237 gateserver = getenv("FTPSERVER");
238 if (gateserver == NULL || *gateserver == '\0')
239 gateserver = GATE_SERVER;
240 if (gatemode) {
241 if (*gateserver == '\0') {
242 warnx(
243 "Neither $FTPSERVER nor GATE_SERVER is defined; disabling gate-ftp");
244 gatemode = 0;
245 }
246 }
247
248 cp = getenv("TERM");
249 if (cp == NULL || strcmp(cp, "dumb") == 0)
250 dumbterm = 1;
251 else
252 dumbterm = 0;
253 fromatty = isatty(fileno(stdin));
254 ttyout = stdout;
255 if (isatty(fileno(ttyout))) {
256 verbose = 1; /* verbose if to a tty */
257 if (! dumbterm) {
258 #ifndef NO_EDITCOMPLETE
259 if (fromatty) /* editing mode on if tty is usable */
260 editing = 1;
261 #endif
262 #ifndef NO_PROGRESS
263 if (foregroundproc())
264 progress = 1; /* progress bar on if fg */
265 #endif
266 }
267 }
268
269 while ((ch = getopt(argc, argv, "46AadefginN:o:pP:q:r:Rs:tT:u:vVx:")) != -1) {
270 switch (ch) {
271 case '4':
272 family = AF_INET;
273 break;
274
275 case '6':
276 #ifdef INET6
277 family = AF_INET6;
278 #else
279 warnx("INET6 support is not available; ignoring -6");
280 #endif
281 break;
282
283 case 'A':
284 activefallback = 0;
285 passivemode = 0;
286 break;
287
288 case 'a':
289 anonftp = 1;
290 break;
291
292 case 'd':
293 options |= SO_DEBUG;
294 ftp_debug++;
295 break;
296
297 case 'e':
298 #ifndef NO_EDITCOMPLETE
299 editing = 0;
300 #endif
301 break;
302
303 case 'f':
304 flushcache = 1;
305 break;
306
307 case 'g':
308 doglob = 0;
309 break;
310
311 case 'i':
312 interactive = 0;
313 break;
314
315 case 'n':
316 autologin = 0;
317 break;
318
319 case 'N':
320 if (strlcpy(netrc, optarg, sizeof(netrc))
321 >= sizeof(netrc))
322 errx(1, "%s: %s", optarg,
323 strerror(ENAMETOOLONG));
324 break;
325
326 case 'o':
327 outfile = optarg;
328 if (strcmp(outfile, "-") == 0)
329 ttyout = stderr;
330 break;
331
332 case 'p':
333 passivemode = 1;
334 activefallback = 0;
335 break;
336
337 case 'P':
338 ftpport = optarg;
339 break;
340
341 case 'q':
342 quit_time = strtol(optarg, &ep, 10);
343 if (quit_time < 1 || *ep != '\0')
344 errx(1, "Bad quit value: %s", optarg);
345 break;
346
347 case 'r':
348 retry_connect = strtol(optarg, &ep, 10);
349 if (retry_connect < 1 || *ep != '\0')
350 errx(1, "Bad retry value: %s", optarg);
351 break;
352
353 case 'R':
354 restartautofetch = 1;
355 break;
356
357 case 's':
358 src_addr = optarg;
359 break;
360
361 case 't':
362 trace = 1;
363 break;
364
365 case 'T':
366 {
367 int targc;
368 char *targv[6], *oac;
369 char cmdbuf[MAX_C_NAME];
370
371 /* look for `dir,max[,incr]' */
372 targc = 0;
373 (void)strlcpy(cmdbuf, "-T", sizeof(cmdbuf));
374 targv[targc++] = cmdbuf;
375 oac = ftp_strdup(optarg);
376
377 while ((cp = strsep(&oac, ",")) != NULL) {
378 if (*cp == '\0') {
379 warnx("Bad throttle value `%s'",
380 optarg);
381 usage();
382 /* NOTREACHED */
383 }
384 targv[targc++] = cp;
385 if (targc >= 5)
386 break;
387 }
388 if (parserate(targc, targv, 1) == -1)
389 usage();
390 free(oac);
391 break;
392 }
393
394 case 'u':
395 {
396 isupload = 1;
397 interactive = 0;
398 upload_path = ftp_strdup(optarg);
399
400 break;
401 }
402
403 case 'v':
404 progress = verbose = 1;
405 break;
406
407 case 'V':
408 progress = verbose = 0;
409 break;
410
411 case 'x':
412 sndbuf_size = strsuftoi(optarg);
413 if (sndbuf_size < 1)
414 errx(1, "Bad xferbuf value: %s", optarg);
415 rcvbuf_size = sndbuf_size;
416 break;
417
418 default:
419 usage();
420 }
421 }
422 /* set line buffering on ttyout */
423 setvbuf(ttyout, NULL, _IOLBF, 0);
424 argc -= optind;
425 argv += optind;
426
427 cpend = 0; /* no pending replies */
428 proxy = 0; /* proxy not active */
429 crflag = 1; /* strip c.r. on ascii gets */
430 sendport = -1; /* not using ports */
431
432 if (src_addr != NULL) {
433 struct addrinfo hints;
434 int error;
435
436 memset(&hints, 0, sizeof(hints));
437 hints.ai_family = family;
438 hints.ai_socktype = SOCK_STREAM;
439 hints.ai_flags = AI_PASSIVE;
440 error = getaddrinfo(src_addr, NULL, &hints, &bindai);
441 if (error) {
442 errx(1, "Can't lookup `%s': %s", src_addr,
443 (error == EAI_SYSTEM) ? strerror(errno)
444 : gai_strerror(error));
445 }
446 }
447
448 /*
449 * Cache the user name and home directory.
450 */
451 localhome = NULL;
452 localname = NULL;
453 anonuser = "anonymous";
454 cp = getenv("HOME");
455 if (! EMPTYSTRING(cp))
456 localhome = ftp_strdup(cp);
457 pw = NULL;
458 cp = getlogin();
459 if (cp != NULL)
460 pw = getpwnam(cp);
461 if (pw == NULL)
462 pw = getpwuid(getuid());
463 if (pw != NULL) {
464 if (localhome == NULL && !EMPTYSTRING(pw->pw_dir))
465 localhome = ftp_strdup(pw->pw_dir);
466 localname = ftp_strdup(pw->pw_name);
467 anonuser = localname;
468 }
469 if (netrc[0] == '\0' && localhome != NULL) {
470 if (strlcpy(netrc, localhome, sizeof(netrc)) >= sizeof(netrc) ||
471 strlcat(netrc, "/.netrc", sizeof(netrc)) >= sizeof(netrc)) {
472 warnx("%s/.netrc: %s", localhome,
473 strerror(ENAMETOOLONG));
474 netrc[0] = '\0';
475 }
476 }
477 if (localhome == NULL)
478 localhome = ftp_strdup("/");
479
480 /*
481 * Every anonymous FTP server I've encountered will accept the
482 * string "username@", and will append the hostname itself. We
483 * do this by default since many servers are picky about not
484 * having a FQDN in the anonymous password.
485 * - thorpej@NetBSD.org
486 */
487 len = strlen(anonuser) + 2;
488 anonpass = ftp_malloc(len);
489 (void)strlcpy(anonpass, anonuser, len);
490 (void)strlcat(anonpass, "@", len);
491
492 /*
493 * set all the defaults for options defined in
494 * struct option optiontab[] declared in cmdtab.c
495 */
496 setupoption("anonpass", getenv("FTPANONPASS"), anonpass);
497 setupoption("ftp_proxy", getenv(FTP_PROXY), "");
498 setupoption("http_proxy", getenv(HTTP_PROXY), "");
499 setupoption("https_proxy", getenv(HTTPS_PROXY), "");
500 setupoption("no_proxy", getenv(NO_PROXY), "");
501 setupoption("pager", getenv("PAGER"), DEFAULTPAGER);
502 setupoption("prompt", getenv("FTPPROMPT"), DEFAULTPROMPT);
503 setupoption("rprompt", getenv("FTPRPROMPT"), DEFAULTRPROMPT);
504
505 free(anonpass);
506
507 setttywidth(0);
508 #ifdef SIGINFO
509 (void)xsignal(SIGINFO, psummary);
510 #endif
511 (void)xsignal(SIGQUIT, psummary);
512 (void)xsignal(SIGUSR1, crankrate);
513 (void)xsignal(SIGUSR2, crankrate);
514 (void)xsignal(SIGWINCH, setttywidth);
515
516 if (argc > 0) {
517 if (isupload) {
518 rval = auto_put(argc, argv, upload_path);
519 sigint_or_rval_exit:
520 if (sigint_raised) {
521 (void)xsignal(SIGINT, SIG_DFL);
522 raise(SIGINT);
523 }
524 exit(rval);
525 } else if (strchr(argv[0], ':') != NULL
526 && ! isipv6addr(argv[0])) {
527 rval = auto_fetch(argc, argv);
528 if (rval >= 0) /* -1 == connected and cd-ed */
529 goto sigint_or_rval_exit;
530 } else {
531 char *xargv[4], *uuser, *host;
532 char cmdbuf[MAXPATHLEN];
533
534 if ((rval = sigsetjmp(toplevel, 1)))
535 goto sigint_or_rval_exit;
536 (void)xsignal(SIGINT, intr);
537 (void)xsignal(SIGPIPE, lostpeer);
538 uuser = NULL;
539 host = argv[0];
540 cp = strchr(host, '@');
541 if (cp) {
542 *cp = '\0';
543 uuser = host;
544 host = cp + 1;
545 }
546 (void)strlcpy(cmdbuf, getprogname(), sizeof(cmdbuf));
547 xargv[0] = cmdbuf;
548 xargv[1] = host;
549 xargv[2] = argv[1];
550 xargv[3] = NULL;
551 do {
552 int oautologin;
553
554 oautologin = autologin;
555 if (uuser != NULL) {
556 anonftp = 0;
557 autologin = 0;
558 }
559 setpeer(argc+1, xargv);
560 autologin = oautologin;
561 if (connected == 1 && uuser != NULL)
562 (void)ftp_login(host, uuser, NULL);
563 if (!retry_connect)
564 break;
565 if (!connected) {
566 macnum = 0;
567 fprintf(ttyout,
568 "Retrying in %d seconds...\n",
569 retry_connect);
570 sleep(retry_connect);
571 }
572 } while (!connected);
573 retry_connect = 0; /* connected, stop hiding msgs */
574 }
575 }
576 if (isupload)
577 usage();
578
579 #ifndef NO_EDITCOMPLETE
580 controlediting();
581 #endif /* !NO_EDITCOMPLETE */
582
583 (void)sigsetjmp(toplevel, 1);
584 (void)xsignal(SIGINT, intr);
585 (void)xsignal(SIGPIPE, lostpeer);
586 for (;;)
587 cmdscanner();
588 }
589
590 /*
591 * Generate a prompt
592 */
593 char *
prompt(void)594 prompt(void)
595 {
596 static char **promptopt;
597 static char buf[MAXPATHLEN];
598
599 if (promptopt == NULL) {
600 struct option *o;
601
602 o = getoption("prompt");
603 if (o == NULL)
604 errx(1, "prompt: no such option `prompt'");
605 promptopt = &(o->value);
606 }
607 formatbuf(buf, sizeof(buf), *promptopt ? *promptopt : DEFAULTPROMPT);
608 return (buf);
609 }
610
611 /*
612 * Generate an rprompt
613 */
614 char *
rprompt(void)615 rprompt(void)
616 {
617 static char **rpromptopt;
618 static char buf[MAXPATHLEN];
619
620 if (rpromptopt == NULL) {
621 struct option *o;
622
623 o = getoption("rprompt");
624 if (o == NULL)
625 errx(1, "rprompt: no such option `rprompt'");
626 rpromptopt = &(o->value);
627 }
628 formatbuf(buf, sizeof(buf), *rpromptopt ? *rpromptopt : DEFAULTRPROMPT);
629 return (buf);
630 }
631
632 /*
633 * Command parser.
634 */
635 void
cmdscanner(void)636 cmdscanner(void)
637 {
638 struct cmd *c;
639 char *p;
640 #ifndef NO_EDITCOMPLETE
641 int ch;
642 size_t num;
643 #endif
644 int len;
645 char cmdbuf[MAX_C_NAME];
646
647 for (;;) {
648 #ifndef NO_EDITCOMPLETE
649 if (!editing) {
650 #endif /* !NO_EDITCOMPLETE */
651 if (fromatty) {
652 fputs(prompt(), ttyout);
653 p = rprompt();
654 if (*p)
655 fprintf(ttyout, "%s ", p);
656 }
657 (void)fflush(ttyout);
658 len = get_line(stdin, line, sizeof(line), NULL);
659 switch (len) {
660 case -1: /* EOF */
661 case -2: /* error */
662 if (fromatty)
663 putc('\n', ttyout);
664 quit(0, NULL);
665 /* NOTREACHED */
666 case -3: /* too long; try again */
667 fputs("Sorry, input line is too long.\n",
668 ttyout);
669 continue;
670 case 0: /* empty; try again */
671 continue;
672 default: /* all ok */
673 break;
674 }
675 #ifndef NO_EDITCOMPLETE
676 } else {
677 const char *buf;
678 HistEvent ev;
679 cursor_pos = NULL;
680
681 buf = el_gets(el, &ch);
682 num = ch;
683 if (buf == NULL || num == 0) {
684 if (fromatty)
685 putc('\n', ttyout);
686 quit(0, NULL);
687 }
688 if (num >= sizeof(line)) {
689 fputs("Sorry, input line is too long.\n",
690 ttyout);
691 break;
692 }
693 memcpy(line, buf, num);
694 if (line[--num] == '\n') {
695 line[num] = '\0';
696 if (num == 0)
697 break;
698 }
699 history(hist, &ev, H_ENTER, buf);
700 }
701 #endif /* !NO_EDITCOMPLETE */
702
703 makeargv();
704 if (margc == 0)
705 continue;
706 c = getcmd(margv[0]);
707 if (c == (struct cmd *)-1) {
708 fputs("?Ambiguous command.\n", ttyout);
709 continue;
710 }
711 if (c == NULL) {
712 #if !defined(NO_EDITCOMPLETE)
713 /*
714 * attempt to el_parse() unknown commands.
715 * any command containing a ':' would be parsed
716 * as "[prog:]cmd ...", and will result in a
717 * false positive if prog != "ftp", so treat
718 * such commands as invalid.
719 */
720 if (strchr(margv[0], ':') != NULL ||
721 !editing ||
722 el_parse(el, margc, (void *)margv) != 0)
723 #endif /* !NO_EDITCOMPLETE */
724 fputs("?Invalid command.\n", ttyout);
725 continue;
726 }
727 if (c->c_conn && !connected) {
728 fputs("Not connected.\n", ttyout);
729 continue;
730 }
731 confirmrest = 0;
732 (void)strlcpy(cmdbuf, c->c_name, sizeof(cmdbuf));
733 margv[0] = cmdbuf;
734 (*c->c_handler)(margc, margv);
735 if (bell && c->c_bell)
736 (void)putc('\007', ttyout);
737 if (c->c_handler != help)
738 break;
739 }
740 (void)xsignal(SIGINT, intr);
741 (void)xsignal(SIGPIPE, lostpeer);
742 }
743
744 struct cmd *
getcmd(const char * name)745 getcmd(const char *name)
746 {
747 const char *p, *q;
748 struct cmd *c, *found;
749 int nmatches, longest;
750
751 if (name == NULL)
752 return (0);
753
754 longest = 0;
755 nmatches = 0;
756 found = 0;
757 for (c = cmdtab; (p = c->c_name) != NULL; c++) {
758 for (q = name; *q == *p++; q++)
759 if (*q == 0) /* exact match? */
760 return (c);
761 if (!*q) { /* the name was a prefix */
762 if (q - name > longest) {
763 longest = q - name;
764 nmatches = 1;
765 found = c;
766 } else if (q - name == longest)
767 nmatches++;
768 }
769 }
770 if (nmatches > 1)
771 return ((struct cmd *)-1);
772 return (found);
773 }
774
775 /*
776 * Slice a string up into argc/argv.
777 */
778
779 int slrflag;
780
781 void
makeargv(void)782 makeargv(void)
783 {
784 char *argp;
785
786 stringbase = line; /* scan from first of buffer */
787 argbase = argbuf; /* store from first of buffer */
788 slrflag = 0;
789 marg_sl->sl_cur = 0; /* reset to start of marg_sl */
790 for (margc = 0; ; margc++) {
791 argp = slurpstring();
792 ftp_sl_add(marg_sl, argp);
793 if (argp == NULL)
794 break;
795 }
796 #ifndef NO_EDITCOMPLETE
797 if (cursor_pos == line) {
798 cursor_argc = 0;
799 cursor_argo = 0;
800 } else if (cursor_pos != NULL) {
801 cursor_argc = margc;
802 cursor_argo = strlen(margv[margc-1]);
803 }
804 #endif /* !NO_EDITCOMPLETE */
805 }
806
807 #ifdef NO_EDITCOMPLETE
808 #define INC_CHKCURSOR(x) (x)++
809 #else /* !NO_EDITCOMPLETE */
810 #define INC_CHKCURSOR(x) { (x)++ ; \
811 if (x == cursor_pos) { \
812 cursor_argc = margc; \
813 cursor_argo = ap-argbase; \
814 cursor_pos = NULL; \
815 } }
816
817 #endif /* !NO_EDITCOMPLETE */
818
819 /*
820 * Parse string into argbuf;
821 * implemented with FSM to
822 * handle quoting and strings
823 */
824 char *
slurpstring(void)825 slurpstring(void)
826 {
827 static char bangstr[2] = { '!', '\0' };
828 static char dollarstr[2] = { '$', '\0' };
829 int got_one = 0;
830 char *sb = stringbase;
831 char *ap = argbase;
832 char *tmp = argbase; /* will return this if token found */
833
834 if (*sb == '!' || *sb == '$') { /* recognize ! as a token for shell */
835 switch (slrflag) { /* and $ as token for macro invoke */
836 case 0:
837 slrflag++;
838 INC_CHKCURSOR(stringbase);
839 return ((*sb == '!') ? bangstr : dollarstr);
840 /* NOTREACHED */
841 case 1:
842 slrflag++;
843 altarg = stringbase;
844 break;
845 default:
846 break;
847 }
848 }
849
850 S0:
851 switch (*sb) {
852
853 case '\0':
854 goto OUT;
855
856 case ' ':
857 case '\t':
858 INC_CHKCURSOR(sb);
859 goto S0;
860
861 default:
862 switch (slrflag) {
863 case 0:
864 slrflag++;
865 break;
866 case 1:
867 slrflag++;
868 altarg = sb;
869 break;
870 default:
871 break;
872 }
873 goto S1;
874 }
875
876 S1:
877 switch (*sb) {
878
879 case ' ':
880 case '\t':
881 case '\0':
882 goto OUT; /* end of token */
883
884 case '\\':
885 INC_CHKCURSOR(sb);
886 goto S2; /* slurp next character */
887
888 case '"':
889 INC_CHKCURSOR(sb);
890 goto S3; /* slurp quoted string */
891
892 default:
893 *ap = *sb; /* add character to token */
894 ap++;
895 INC_CHKCURSOR(sb);
896 got_one = 1;
897 goto S1;
898 }
899
900 S2:
901 switch (*sb) {
902
903 case '\0':
904 goto OUT;
905
906 default:
907 *ap = *sb;
908 ap++;
909 INC_CHKCURSOR(sb);
910 got_one = 1;
911 goto S1;
912 }
913
914 S3:
915 switch (*sb) {
916
917 case '\0':
918 goto OUT;
919
920 case '"':
921 INC_CHKCURSOR(sb);
922 goto S1;
923
924 default:
925 *ap = *sb;
926 ap++;
927 INC_CHKCURSOR(sb);
928 got_one = 1;
929 goto S3;
930 }
931
932 OUT:
933 if (got_one)
934 *ap++ = '\0';
935 argbase = ap; /* update storage pointer */
936 stringbase = sb; /* update scan pointer */
937 if (got_one) {
938 return (tmp);
939 }
940 switch (slrflag) {
941 case 0:
942 slrflag++;
943 break;
944 case 1:
945 slrflag++;
946 altarg = NULL;
947 break;
948 default:
949 break;
950 }
951 return (NULL);
952 }
953
954 /*
955 * Help/usage command.
956 * Call each command handler with argc == 0 and argv[0] == name.
957 */
958 void
help(int argc,char * argv[])959 help(int argc, char *argv[])
960 {
961 struct cmd *c;
962 char *nargv[1], *cmd;
963 const char *p;
964 int isusage;
965
966 cmd = argv[0];
967 isusage = (strcmp(cmd, "usage") == 0);
968 if (argc == 0 || (isusage && argc == 1)) {
969 UPRINTF("usage: %s [command [...]]\n", cmd);
970 return;
971 }
972 if (argc == 1) {
973 StringList *buf;
974
975 buf = ftp_sl_init();
976 fprintf(ttyout,
977 "%sommands may be abbreviated. Commands are:\n\n",
978 proxy ? "Proxy c" : "C");
979 for (c = cmdtab; (p = c->c_name) != NULL; c++)
980 if (!proxy || c->c_proxy)
981 ftp_sl_add(buf, ftp_strdup(p));
982 list_vertical(buf);
983 sl_free(buf, 1);
984 return;
985 }
986
987 #define HELPINDENT ((int) sizeof("disconnect"))
988
989 while (--argc > 0) {
990 char *arg;
991 char cmdbuf[MAX_C_NAME];
992
993 arg = *++argv;
994 c = getcmd(arg);
995 if (c == (struct cmd *)-1)
996 fprintf(ttyout, "?Ambiguous %s command `%s'\n",
997 cmd, arg);
998 else if (c == NULL)
999 fprintf(ttyout, "?Invalid %s command `%s'\n",
1000 cmd, arg);
1001 else {
1002 if (isusage) {
1003 (void)strlcpy(cmdbuf, c->c_name, sizeof(cmdbuf));
1004 nargv[0] = cmdbuf;
1005 (*c->c_handler)(0, nargv);
1006 } else
1007 fprintf(ttyout, "%-*s\t%s\n", HELPINDENT,
1008 c->c_name, c->c_help);
1009 }
1010 }
1011 }
1012
1013 struct option *
getoption(const char * name)1014 getoption(const char *name)
1015 {
1016 const char *p;
1017 struct option *c;
1018
1019 if (name == NULL)
1020 return (NULL);
1021 for (c = optiontab; (p = c->name) != NULL; c++) {
1022 if (strcasecmp(p, name) == 0)
1023 return (c);
1024 }
1025 return (NULL);
1026 }
1027
1028 char *
getoptionvalue(const char * name)1029 getoptionvalue(const char *name)
1030 {
1031 struct option *c;
1032
1033 if (name == NULL)
1034 errx(1, "getoptionvalue: invoked with NULL name");
1035 c = getoption(name);
1036 if (c != NULL)
1037 return (c->value);
1038 errx(1, "getoptionvalue: invoked with unknown option `%s'", name);
1039 /* NOTREACHED */
1040 }
1041
1042 static void
setupoption(const char * name,const char * value,const char * defaultvalue)1043 setupoption(const char *name, const char *value, const char *defaultvalue)
1044 {
1045 set_option(name, value ? value : defaultvalue, 0);
1046 }
1047
1048 void
usage(void)1049 usage(void)
1050 {
1051 const char *progname = getprogname();
1052
1053 (void)fprintf(stderr,
1054 "usage: %s [-46AadefginpRtVv] [-N netrc] [-o outfile] [-P port] [-q quittime]\n"
1055 " [-r retry] [-s srcaddr] [-T dir,max[,inc]] [-x xferbufsize]\n"
1056 " [[user@]host [port]] [host:path[/]] [file:///file]\n"
1057 " [ftp://[user[:pass]@]host[:port]/path[/]]\n"
1058 " [http://[user[:pass]@]host[:port]/path] [...]\n"
1059 #ifdef WITH_SSL
1060 " [https://[user[:pass]@]host[:port]/path] [...]\n"
1061 #endif
1062 " %s -u URL file [...]\n", progname, progname);
1063 exit(1);
1064 }
1065