Merge branch 'vendor/TNFTP'
[dragonfly.git] / contrib / tnftp / cmds.c
1 /*      $NetBSD: cmds.c,v 1.134 2012/01/15 20:43:24 christos Exp $      */
2
3 /*-
4  * Copyright (c) 1996-2009 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  * This code is derived from software contributed to The NetBSD Foundation
11  * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
12  * NASA Ames Research Center.
13  *
14  * Redistribution and use in source and binary forms, with or without
15  * modification, are permitted provided that the following conditions
16  * are met:
17  * 1. Redistributions of source code must retain the above copyright
18  *    notice, this list of conditions and the following disclaimer.
19  * 2. Redistributions in binary form must reproduce the above copyright
20  *    notice, this list of conditions and the following disclaimer in the
21  *    documentation and/or other materials provided with the distribution.
22  *
23  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
24  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
25  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
26  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
27  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
28  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
29  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
30  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
31  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
32  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
33  * POSSIBILITY OF SUCH DAMAGE.
34  */
35
36 /*
37  * Copyright (c) 1985, 1989, 1993, 1994
38  *      The Regents of the University of California.  All rights reserved.
39  *
40  * Redistribution and use in source and binary forms, with or without
41  * modification, are permitted provided that the following conditions
42  * are met:
43  * 1. Redistributions of source code must retain the above copyright
44  *    notice, this list of conditions and the following disclaimer.
45  * 2. Redistributions in binary form must reproduce the above copyright
46  *    notice, this list of conditions and the following disclaimer in the
47  *    documentation and/or other materials provided with the distribution.
48  * 3. Neither the name of the University nor the names of its contributors
49  *    may be used to endorse or promote products derived from this software
50  *    without specific prior written permission.
51  *
52  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
53  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
54  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
55  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
56  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
57  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
58  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
59  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
60  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
61  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
62  * SUCH DAMAGE.
63  */
64
65 /*
66  * Copyright (C) 1997 and 1998 WIDE Project.
67  * All rights reserved.
68  *
69  * Redistribution and use in source and binary forms, with or without
70  * modification, are permitted provided that the following conditions
71  * are met:
72  * 1. Redistributions of source code must retain the above copyright
73  *    notice, this list of conditions and the following disclaimer.
74  * 2. Redistributions in binary form must reproduce the above copyright
75  *    notice, this list of conditions and the following disclaimer in the
76  *    documentation and/or other materials provided with the distribution.
77  * 3. Neither the name of the project nor the names of its contributors
78  *    may be used to endorse or promote products derived from this software
79  *    without specific prior written permission.
80  *
81  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
82  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
83  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
84  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
85  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
86  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
87  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
88  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
89  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
90  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
91  * SUCH DAMAGE.
92  */
93
94 #include <sys/cdefs.h>
95 #ifndef lint
96 #if 0
97 static char sccsid[] = "@(#)cmds.c      8.6 (Berkeley) 10/9/94";
98 #else
99 __RCSID("$NetBSD: cmds.c,v 1.134 2012/01/15 20:43:24 christos Exp $");
100 #endif
101 #endif /* not lint */
102
103 /*
104  * FTP User Program -- Command Routines.
105  */
106 #include <sys/types.h>
107 #include <sys/socket.h>
108 #include <sys/stat.h>
109 #include <sys/wait.h>
110 #include <arpa/ftp.h>
111
112 #include <ctype.h>
113 #include <err.h>
114 #include <errno.h>
115 #include <glob.h>
116 #include <limits.h>
117 #include <netdb.h>
118 #include <paths.h>
119 #include <stddef.h>
120 #include <stdio.h>
121 #include <libutil.h>
122 #include <stdlib.h>
123 #include <string.h>
124 #include <time.h>
125 #include <unistd.h>
126
127 #include "ftp_var.h"
128 #include "version.h"
129
130 static struct types {
131         const char      *t_name;
132         const char      *t_mode;
133         int             t_type;
134         const char      *t_arg;
135 } types[] = {
136         { "ascii",      "A",    TYPE_A, 0 },
137         { "binary",     "I",    TYPE_I, 0 },
138         { "image",      "I",    TYPE_I, 0 },
139         { "ebcdic",     "E",    TYPE_E, 0 },
140         { "tenex",      "L",    TYPE_L, bytename },
141         { NULL,         NULL,   0, NULL }
142 };
143
144 static sigjmp_buf        jabort;
145
146 static int      confirm(const char *, const char *);
147 __dead static void      mintr(int);
148 static void     mabort(const char *);
149 static void     set_type(const char *);
150
151 static const char *doprocess(char *, size_t, const char *, int, int, int);
152 static const char *domap(char *, size_t, const char *);
153 static const char *docase(char *, size_t, const char *);
154 static const char *dotrans(char *, size_t, const char *);
155
156 /*
157  * Confirm if "cmd" is to be performed upon "file".
158  * If "file" is NULL, generate a "Continue with" prompt instead.
159  */
160 static int
161 confirm(const char *cmd, const char *file)
162 {
163         const char *errormsg;
164         char cline[BUFSIZ];
165         const char *promptleft, *promptright;
166
167         if (!interactive || confirmrest)
168                 return (1);
169         if (file == NULL) {
170                 promptleft = "Continue with";
171                 promptright = cmd;
172         } else {
173                 promptleft = cmd;
174                 promptright = file;
175         }
176         while (1) {
177                 fprintf(ttyout, "%s %s [anpqy?]? ", promptleft, promptright);
178                 (void)fflush(ttyout);
179                 if (get_line(stdin, cline, sizeof(cline), &errormsg) < 0) {
180                         mflag = 0;
181                         fprintf(ttyout, "%s; %s aborted\n", errormsg, cmd);
182                         return (0);
183                 }
184                 switch (tolower((unsigned char)*cline)) {
185                         case 'a':
186                                 confirmrest = 1;
187                                 fprintf(ttyout,
188                                     "Prompting off for duration of %s.\n", cmd);
189                                 break;
190                         case 'p':
191                                 interactive = 0;
192                                 fputs("Interactive mode: off.\n", ttyout);
193                                 break;
194                         case 'q':
195                                 mflag = 0;
196                                 fprintf(ttyout, "%s aborted.\n", cmd);
197                                 /* FALLTHROUGH */
198                         case 'n':
199                                 return (0);
200                         case '?':
201                                 fprintf(ttyout,
202                                     "  confirmation options:\n"
203                                     "\ta  answer `yes' for the duration of %s\n"
204                                     "\tn  answer `no' for this file\n"
205                                     "\tp  turn off `prompt' mode\n"
206                                     "\tq  stop the current %s\n"
207                                     "\ty  answer `yes' for this file\n"
208                                     "\t?  this help list\n",
209                                     cmd, cmd);
210                                 continue;       /* back to while(1) */
211                 }
212                 return (1);
213         }
214         /* NOTREACHED */
215 }
216
217 /*
218  * Set transfer type.
219  */
220 void
221 settype(int argc, char *argv[])
222 {
223         struct types *p;
224
225         if (argc == 0 || argc > 2) {
226                 const char *sep;
227
228                 UPRINTF("usage: %s [", argv[0]);
229                 sep = " ";
230                 for (p = types; p->t_name; p++) {
231                         fprintf(ttyout, "%s%s", sep, p->t_name);
232                         sep = " | ";
233                 }
234                 fputs(" ]\n", ttyout);
235                 code = -1;
236                 return;
237         }
238         if (argc < 2) {
239                 fprintf(ttyout, "Using %s mode to transfer files.\n", typename);
240                 code = 0;
241                 return;
242         }
243         set_type(argv[1]);
244 }
245
246 void
247 set_type(const char *ttype)
248 {
249         struct types *p;
250         int comret;
251
252         for (p = types; p->t_name; p++)
253                 if (strcmp(ttype, p->t_name) == 0)
254                         break;
255         if (p->t_name == 0) {
256                 fprintf(ttyout, "%s: unknown mode.\n", ttype);
257                 code = -1;
258                 return;
259         }
260         if ((p->t_arg != NULL) && (*(p->t_arg) != '\0'))
261                 comret = command("TYPE %s %s", p->t_mode, p->t_arg);
262         else
263                 comret = command("TYPE %s", p->t_mode);
264         if (comret == COMPLETE) {
265                 (void)strlcpy(typename, p->t_name, sizeof(typename));
266                 curtype = type = p->t_type;
267         }
268 }
269
270 /*
271  * Internal form of settype; changes current type in use with server
272  * without changing our notion of the type for data transfers.
273  * Used to change to and from ascii for listings.
274  */
275 void
276 changetype(int newtype, int show)
277 {
278         struct types *p;
279         int comret, oldverbose = verbose;
280
281         if (newtype == 0)
282                 newtype = TYPE_I;
283         if (newtype == curtype)
284                 return;
285         if (ftp_debug == 0 && show == 0)
286                 verbose = 0;
287         for (p = types; p->t_name; p++)
288                 if (newtype == p->t_type)
289                         break;
290         if (p->t_name == 0) {
291                 errx(1, "changetype: unknown type %d", newtype);
292         }
293         if (newtype == TYPE_L && bytename[0] != '\0')
294                 comret = command("TYPE %s %s", p->t_mode, bytename);
295         else
296                 comret = command("TYPE %s", p->t_mode);
297         if (comret == COMPLETE)
298                 curtype = newtype;
299         verbose = oldverbose;
300 }
301
302 /*
303  * Set binary transfer type.
304  */
305 /*VARARGS*/
306 void
307 setbinary(int argc, char *argv[])
308 {
309
310         if (argc == 0) {
311                 UPRINTF("usage: %s\n", argv[0]);
312                 code = -1;
313                 return;
314         }
315         set_type("binary");
316 }
317
318 /*
319  * Set ascii transfer type.
320  */
321 /*VARARGS*/
322 void
323 setascii(int argc, char *argv[])
324 {
325
326         if (argc == 0) {
327                 UPRINTF("usage: %s\n", argv[0]);
328                 code = -1;
329                 return;
330         }
331         set_type("ascii");
332 }
333
334 /*
335  * Set tenex transfer type.
336  */
337 /*VARARGS*/
338 void
339 settenex(int argc, char *argv[])
340 {
341
342         if (argc == 0) {
343                 UPRINTF("usage: %s\n", argv[0]);
344                 code = -1;
345                 return;
346         }
347         set_type("tenex");
348 }
349
350 /*
351  * Set file transfer mode.
352  */
353 /*ARGSUSED*/
354 void
355 setftmode(int argc, char *argv[])
356 {
357
358         if (argc != 2) {
359                 UPRINTF("usage: %s mode-name\n", argv[0]);
360                 code = -1;
361                 return;
362         }
363         fprintf(ttyout, "We only support %s mode, sorry.\n", modename);
364         code = -1;
365 }
366
367 /*
368  * Set file transfer format.
369  */
370 /*ARGSUSED*/
371 void
372 setform(int argc, char *argv[])
373 {
374
375         if (argc != 2) {
376                 UPRINTF("usage: %s format\n", argv[0]);
377                 code = -1;
378                 return;
379         }
380         fprintf(ttyout, "We only support %s format, sorry.\n", formname);
381         code = -1;
382 }
383
384 /*
385  * Set file transfer structure.
386  */
387 /*ARGSUSED*/
388 void
389 setstruct(int argc, char *argv[])
390 {
391
392         if (argc != 2) {
393                 UPRINTF("usage: %s struct-mode\n", argv[0]);
394                 code = -1;
395                 return;
396         }
397         fprintf(ttyout, "We only support %s structure, sorry.\n", structname);
398         code = -1;
399 }
400
401 /*
402  * Send a single file.
403  */
404 void
405 put(int argc, char *argv[])
406 {
407         char buf[MAXPATHLEN];
408         const char *cmd;
409         int loc = 0;
410         char *locfile;
411         const char *remfile;
412
413         if (argc == 2) {
414                 argc++;
415                 argv[2] = argv[1];
416                 loc++;
417         }
418         if (argc == 0 || (argc == 1 && !another(&argc, &argv, "local-file")))
419                 goto usage;
420         if ((argc < 3 && !another(&argc, &argv, "remote-file")) || argc > 3) {
421  usage:
422                 UPRINTF("usage: %s local-file [remote-file]\n", argv[0]);
423                 code = -1;
424                 return;
425         }
426         if ((locfile = globulize(argv[1])) == NULL) {
427                 code = -1;
428                 return;
429         }
430         remfile = argv[2];
431         if (loc)        /* If argv[2] is a copy of the old argv[1], update it */
432                 remfile = locfile;
433         cmd = (argv[0][0] == 'a') ? "APPE" : ((sunique) ? "STOU" : "STOR");
434         remfile = doprocess(buf, sizeof(buf), remfile,
435                 0, loc && ntflag, loc && mapflag);
436         sendrequest(cmd, locfile, remfile,
437             locfile != argv[1] || remfile != argv[2]);
438         free(locfile);
439 }
440
441 static const char *
442 doprocess(char *dst, size_t dlen, const char *src,
443     int casef, int transf, int mapf)
444 {
445         if (casef)
446                 src = docase(dst, dlen, src);
447         if (transf)
448                 src = dotrans(dst, dlen, src);
449         if (mapf)
450                 src = domap(dst, dlen, src);
451         return src;
452 }
453
454 /*
455  * Send multiple files.
456  */
457 void
458 mput(int argc, char *argv[])
459 {
460         int i;
461         sigfunc oldintr;
462         int ointer;
463         const char *tp;
464
465         if (argc == 0 || (argc == 1 && !another(&argc, &argv, "local-files"))) {
466                 UPRINTF("usage: %s local-files\n", argv[0]);
467                 code = -1;
468                 return;
469         }
470         mflag = 1;
471         oldintr = xsignal(SIGINT, mintr);
472         if (sigsetjmp(jabort, 1))
473                 mabort(argv[0]);
474         if (proxy) {
475                 char *cp;
476
477                 while ((cp = remglob(argv, 0, NULL)) != NULL) {
478                         if (*cp == '\0' || !connected) {
479                                 mflag = 0;
480                                 continue;
481                         }
482                         if (mflag && confirm(argv[0], cp)) {
483                                 char buf[MAXPATHLEN];
484                                 tp = doprocess(buf, sizeof(buf), cp,
485                                     mcase, ntflag, mapflag);
486                                 sendrequest((sunique) ? "STOU" : "STOR",
487                                     cp, tp, cp != tp || !interactive);
488                                 if (!mflag && fromatty) {
489                                         ointer = interactive;
490                                         interactive = 1;
491                                         if (confirm(argv[0], NULL)) {
492                                                 mflag++;
493                                         }
494                                         interactive = ointer;
495                                 }
496                         }
497                 }
498                 goto cleanupmput;
499         }
500         for (i = 1; i < argc && connected; i++) {
501                 char **cpp;
502                 glob_t gl;
503                 int flags;
504
505                 if (!doglob) {
506                         if (mflag && confirm(argv[0], argv[i])) {
507                                 char buf[MAXPATHLEN];
508                                 tp = doprocess(buf, sizeof(buf), argv[i],
509                                         0, ntflag, mapflag);
510                                 sendrequest((sunique) ? "STOU" : "STOR",
511                                     argv[i], tp, tp != argv[i] || !interactive);
512                                 if (!mflag && fromatty) {
513                                         ointer = interactive;
514                                         interactive = 1;
515                                         if (confirm(argv[0], NULL)) {
516                                                 mflag++;
517                                         }
518                                         interactive = ointer;
519                                 }
520                         }
521                         continue;
522                 }
523
524                 memset(&gl, 0, sizeof(gl));
525                 flags = GLOB_BRACE|GLOB_NOCHECK|GLOB_TILDE;
526                 if (glob(argv[i], flags, NULL, &gl) || gl.gl_pathc == 0) {
527                         warnx("Glob pattern `%s' not found", argv[i]);
528                         globfree(&gl);
529                         continue;
530                 }
531                 for (cpp = gl.gl_pathv; cpp && *cpp != NULL && connected;
532                     cpp++) {
533                         if (mflag && confirm(argv[0], *cpp)) {
534                                 char buf[MAXPATHLEN];
535                                 tp = *cpp;
536                                 tp = doprocess(buf, sizeof(buf), *cpp,
537                                     0, ntflag, mapflag);
538                                 sendrequest((sunique) ? "STOU" : "STOR",
539                                     *cpp, tp, *cpp != tp || !interactive);
540                                 if (!mflag && fromatty) {
541                                         ointer = interactive;
542                                         interactive = 1;
543                                         if (confirm(argv[0], NULL)) {
544                                                 mflag++;
545                                         }
546                                         interactive = ointer;
547                                 }
548                         }
549                 }
550                 globfree(&gl);
551         }
552  cleanupmput:
553         (void)xsignal(SIGINT, oldintr);
554         mflag = 0;
555 }
556
557 void
558 reget(int argc, char *argv[])
559 {
560
561         (void)getit(argc, argv, 1, restart_point ? "r+" : "a");
562 }
563
564 void
565 get(int argc, char *argv[])
566 {
567
568         (void)getit(argc, argv, 0, restart_point ? "r+" : "w");
569 }
570
571 /*
572  * Receive one file.
573  * If restartit is  1, restart the xfer always.
574  * If restartit is -1, restart the xfer only if the remote file is newer.
575  */
576 int
577 getit(int argc, char *argv[], int restartit, const char *gmode)
578 {
579         int     loc, rval;
580         char    *remfile, *olocfile;
581         const char *locfile;
582         char    buf[MAXPATHLEN];
583
584         loc = rval = 0;
585         if (argc == 2) {
586                 argc++;
587                 argv[2] = argv[1];
588                 loc++;
589         }
590         if (argc == 0 || (argc == 1 && !another(&argc, &argv, "remote-file")))
591                 goto usage;
592         if ((argc < 3 && !another(&argc, &argv, "local-file")) || argc > 3) {
593  usage:
594                 UPRINTF("usage: %s remote-file [local-file]\n", argv[0]);
595                 code = -1;
596                 return (0);
597         }
598         remfile = argv[1];
599         if ((olocfile = globulize(argv[2])) == NULL) {
600                 code = -1;
601                 return (0);
602         }
603         locfile = doprocess(buf, sizeof(buf), olocfile,
604                 loc && mcase, loc && ntflag, loc && mapflag);
605         if (restartit) {
606                 struct stat stbuf;
607                 int ret;
608
609                 if (! features[FEAT_REST_STREAM]) {
610                         fprintf(ttyout,
611                             "Restart is not supported by the remote server.\n");
612                         return (0);
613                 }
614                 ret = stat(locfile, &stbuf);
615                 if (restartit == 1) {
616                         if (ret < 0) {
617                                 if (errno != ENOENT) {
618                                         warn("Can't stat `%s'", locfile);
619                                         goto freegetit;
620                                 }
621                                 restart_point = 0;
622                         }
623                         else
624                                 restart_point = stbuf.st_size;
625                 } else {
626                         if (ret == 0) {
627                                 time_t mtime;
628
629                                 mtime = remotemodtime(argv[1], 0);
630                                 if (mtime == -1)
631                                         goto freegetit;
632                                 if (stbuf.st_mtime >= mtime) {
633                                         rval = 1;
634                                         goto freegetit;
635                                 }
636                         }
637                 }
638         }
639
640         recvrequest("RETR", locfile, remfile, gmode,
641             remfile != argv[1] || locfile != argv[2], loc);
642         restart_point = 0;
643  freegetit:
644         (void)free(olocfile);
645         return (rval);
646 }
647
648 /* ARGSUSED */
649 static void
650 mintr(int signo)
651 {
652
653         alarmtimer(0);
654         if (fromatty)
655                 write(fileno(ttyout), "\n", 1);
656         siglongjmp(jabort, 1);
657 }
658
659 static void
660 mabort(const char *cmd)
661 {
662         int ointer, oconf;
663
664         if (mflag && fromatty) {
665                 ointer = interactive;
666                 oconf = confirmrest;
667                 interactive = 1;
668                 confirmrest = 0;
669                 if (confirm(cmd, NULL)) {
670                         interactive = ointer;
671                         confirmrest = oconf;
672                         return;
673                 }
674                 interactive = ointer;
675                 confirmrest = oconf;
676         }
677         mflag = 0;
678 }
679
680 /*
681  * Get multiple files.
682  */
683 void
684 mget(int argc, char *argv[])
685 {
686         sigfunc oldintr;
687         int ointer;
688         char *cp;
689         const char *tp;
690         int volatile restartit;
691
692         if (argc == 0 ||
693             (argc == 1 && !another(&argc, &argv, "remote-files"))) {
694                 UPRINTF("usage: %s remote-files\n", argv[0]);
695                 code = -1;
696                 return;
697         }
698         mflag = 1;
699         restart_point = 0;
700         restartit = 0;
701         if (strcmp(argv[0], "mreget") == 0) {
702                 if (! features[FEAT_REST_STREAM]) {
703                         fprintf(ttyout,
704                     "Restart is not supported by the remote server.\n");
705                         return;
706                 }
707                 restartit = 1;
708         }
709         oldintr = xsignal(SIGINT, mintr);
710         if (sigsetjmp(jabort, 1))
711                 mabort(argv[0]);
712         while ((cp = remglob(argv, proxy, NULL)) != NULL) {
713                 char buf[MAXPATHLEN];
714                 if (*cp == '\0' || !connected) {
715                         mflag = 0;
716                         continue;
717                 }
718                 if (! mflag)
719                         continue;
720                 if (! fileindir(cp, localcwd)) {
721                         fprintf(ttyout, "Skipping non-relative filename `%s'\n",
722                             cp);
723                         continue;
724                 }
725                 if (!confirm(argv[0], cp))
726                         continue;
727                 tp = doprocess(buf, sizeof(buf), cp, mcase, ntflag, mapflag);
728                 if (restartit) {
729                         struct stat stbuf;
730
731                         if (stat(tp, &stbuf) == 0)
732                                 restart_point = stbuf.st_size;
733                         else
734                                 warn("Can't stat `%s'", tp);
735                 }
736                 recvrequest("RETR", tp, cp, restart_point ? "r+" : "w",
737                     tp != cp || !interactive, 1);
738                 restart_point = 0;
739                 if (!mflag && fromatty) {
740                         ointer = interactive;
741                         interactive = 1;
742                         if (confirm(argv[0], NULL))
743                                 mflag++;
744                         interactive = ointer;
745                 }
746         }
747         (void)xsignal(SIGINT, oldintr);
748         mflag = 0;
749 }
750
751 /*
752  * Read list of filenames from a local file and get those
753  */
754 void
755 fget(int argc, char *argv[])
756 {
757         const char *gmode;
758         FILE    *fp;
759         char    buf[MAXPATHLEN], cmdbuf[MAX_C_NAME];
760
761         if (argc != 2) {
762                 UPRINTF("usage: %s localfile\n", argv[0]);
763                 code = -1;
764                 return;
765         }
766
767         fp = fopen(argv[1], "r");
768         if (fp == NULL) {
769                 fprintf(ttyout, "Can't open source file %s\n", argv[1]);
770                 code = -1;
771                 return;
772         }
773
774         (void)strlcpy(cmdbuf, "get", sizeof(cmdbuf));
775         argv[0] = cmdbuf;
776         gmode = restart_point ? "r+" : "w";
777
778         while (get_line(fp, buf, sizeof(buf), NULL) >= 0) {
779                 if (buf[0] == '\0')
780                         continue;
781                 argv[1] = buf;
782                 (void)getit(argc, argv, 0, gmode);
783         }
784         fclose(fp);
785 }
786
787 const char *
788 onoff(int val)
789 {
790
791         return (val ? "on" : "off");
792 }
793
794 /*
795  * Show status.
796  */
797 /*ARGSUSED*/
798 void
799 status(int argc, char *argv[])
800 {
801
802         if (argc == 0) {
803                 UPRINTF("usage: %s\n", argv[0]);
804                 code = -1;
805                 return;
806         }
807 #ifndef NO_STATUS
808         if (connected)
809                 fprintf(ttyout, "Connected %sto %s.\n",
810                     connected == -1 ? "and logged in" : "", hostname);
811         else
812                 fputs("Not connected.\n", ttyout);
813         if (!proxy) {
814                 pswitch(1);
815                 if (connected) {
816                         fprintf(ttyout, "Connected for proxy commands to %s.\n",
817                             hostname);
818                 }
819                 else {
820                         fputs("No proxy connection.\n", ttyout);
821                 }
822                 pswitch(0);
823         }
824         fprintf(ttyout, "Gate ftp: %s, server %s, port %s.\n", onoff(gatemode),
825             *gateserver ? gateserver : "(none)", gateport);
826         fprintf(ttyout, "Passive mode: %s; fallback to active mode: %s.\n",
827             onoff(passivemode), onoff(activefallback));
828         fprintf(ttyout, "Mode: %s; Type: %s; Form: %s; Structure: %s.\n",
829             modename, typename, formname, structname);
830         fprintf(ttyout, "Verbose: %s; Bell: %s; Prompting: %s; Globbing: %s.\n",
831             onoff(verbose), onoff(bell), onoff(interactive), onoff(doglob));
832         fprintf(ttyout, "Store unique: %s; Receive unique: %s.\n",
833             onoff(sunique), onoff(runique));
834         fprintf(ttyout, "Preserve modification times: %s.\n", onoff(preserve));
835         fprintf(ttyout, "Case: %s; CR stripping: %s.\n", onoff(mcase),
836             onoff(crflag));
837         if (ntflag) {
838                 fprintf(ttyout, "Ntrans: (in) %s (out) %s\n", ntin, ntout);
839         }
840         else {
841                 fputs("Ntrans: off.\n", ttyout);
842         }
843         if (mapflag) {
844                 fprintf(ttyout, "Nmap: (in) %s (out) %s\n", mapin, mapout);
845         }
846         else {
847                 fputs("Nmap: off.\n", ttyout);
848         }
849         fprintf(ttyout,
850             "Hash mark printing: %s; Mark count: %d; Progress bar: %s.\n",
851             onoff(hash), mark, onoff(progress));
852         fprintf(ttyout,
853             "Get transfer rate throttle: %s; maximum: %d; increment %d.\n",
854             onoff(rate_get), rate_get, rate_get_incr);
855         fprintf(ttyout,
856             "Put transfer rate throttle: %s; maximum: %d; increment %d.\n",
857             onoff(rate_put), rate_put, rate_put_incr);
858         fprintf(ttyout,
859             "Socket buffer sizes: send %d, receive %d.\n",
860             sndbuf_size, rcvbuf_size);
861         fprintf(ttyout, "Use of PORT cmds: %s.\n", onoff(sendport));
862         fprintf(ttyout, "Use of EPSV/EPRT cmds for IPv4: %s%s.\n", onoff(epsv4),
863             epsv4bad ? " (disabled for this connection)" : "");
864         fprintf(ttyout, "Use of EPSV/EPRT cmds for IPv6: %s%s.\n", onoff(epsv6),
865             epsv6bad ? " (disabled for this connection)" : "");
866         fprintf(ttyout, "Command line editing: %s.\n",
867 #ifdef NO_EDITCOMPLETE
868             "support not compiled in"
869 #else   /* !def NO_EDITCOMPLETE */
870             onoff(editing)
871 #endif  /* !def NO_EDITCOMPLETE */
872             );
873         if (macnum > 0) {
874                 int i;
875
876                 fputs("Macros:\n", ttyout);
877                 for (i=0; i<macnum; i++) {
878                         fprintf(ttyout, "\t%s\n", macros[i].mac_name);
879                 }
880         }
881 #endif /* !def NO_STATUS */
882         fprintf(ttyout, "Version: %s %s\n", FTP_PRODUCT, FTP_VERSION);
883         code = 0;
884 }
885
886 /*
887  * Toggle a variable
888  */
889 int
890 togglevar(int argc, char *argv[], int *var, const char *mesg)
891 {
892         if (argc == 1) {
893                 *var = !*var;
894         } else if (argc == 2 && strcasecmp(argv[1], "on") == 0) {
895                 *var = 1;
896         } else if (argc == 2 && strcasecmp(argv[1], "off") == 0) {
897                 *var = 0;
898         } else {
899                 UPRINTF("usage: %s [ on | off ]\n", argv[0]);
900                 return (-1);
901         }
902         if (mesg)
903                 fprintf(ttyout, "%s %s.\n", mesg, onoff(*var));
904         return (*var);
905 }
906
907 /*
908  * Set beep on cmd completed mode.
909  */
910 /*VARARGS*/
911 void
912 setbell(int argc, char *argv[])
913 {
914
915         code = togglevar(argc, argv, &bell, "Bell mode");
916 }
917
918 /*
919  * Set command line editing
920  */
921 /*VARARGS*/
922 void
923 setedit(int argc, char *argv[])
924 {
925
926 #ifdef NO_EDITCOMPLETE
927         if (argc == 0) {
928                 UPRINTF("usage: %s\n", argv[0]);
929                 code = -1;
930                 return;
931         }
932         if (verbose)
933                 fputs("Editing support not compiled in; ignoring command.\n",
934                     ttyout);
935 #else   /* !def NO_EDITCOMPLETE */
936         code = togglevar(argc, argv, &editing, "Editing mode");
937         controlediting();
938 #endif  /* !def NO_EDITCOMPLETE */
939 }
940
941 /*
942  * Turn on packet tracing.
943  */
944 /*VARARGS*/
945 void
946 settrace(int argc, char *argv[])
947 {
948
949         code = togglevar(argc, argv, &trace, "Packet tracing");
950 }
951
952 /*
953  * Toggle hash mark printing during transfers, or set hash mark bytecount.
954  */
955 /*VARARGS*/
956 void
957 sethash(int argc, char *argv[])
958 {
959         if (argc == 1)
960                 hash = !hash;
961         else if (argc != 2) {
962                 UPRINTF("usage: %s [ on | off | bytecount ]\n",
963                     argv[0]);
964                 code = -1;
965                 return;
966         } else if (strcasecmp(argv[1], "on") == 0)
967                 hash = 1;
968         else if (strcasecmp(argv[1], "off") == 0)
969                 hash = 0;
970         else {
971                 int nmark;
972
973                 nmark = strsuftoi(argv[1]);
974                 if (nmark < 1) {
975                         fprintf(ttyout, "mark: bad bytecount value `%s'.\n",
976                             argv[1]);
977                         code = -1;
978                         return;
979                 }
980                 mark = nmark;
981                 hash = 1;
982         }
983         fprintf(ttyout, "Hash mark printing %s", onoff(hash));
984         if (hash)
985                 fprintf(ttyout, " (%d bytes/hash mark)", mark);
986         fputs(".\n", ttyout);
987         if (hash)
988                 progress = 0;
989         code = hash;
990 }
991
992 /*
993  * Turn on printing of server echo's.
994  */
995 /*VARARGS*/
996 void
997 setverbose(int argc, char *argv[])
998 {
999
1000         code = togglevar(argc, argv, &verbose, "Verbose mode");
1001 }
1002
1003 /*
1004  * Toggle PORT/LPRT cmd use before each data connection.
1005  */
1006 /*VARARGS*/
1007 void
1008 setport(int argc, char *argv[])
1009 {
1010
1011         code = togglevar(argc, argv, &sendport, "Use of PORT/LPRT cmds");
1012 }
1013
1014 /*
1015  * Toggle transfer progress bar.
1016  */
1017 /*VARARGS*/
1018 void
1019 setprogress(int argc, char *argv[])
1020 {
1021
1022         code = togglevar(argc, argv, &progress, "Progress bar");
1023         if (progress)
1024                 hash = 0;
1025 }
1026
1027 /*
1028  * Turn on interactive prompting during mget, mput, and mdelete.
1029  */
1030 /*VARARGS*/
1031 void
1032 setprompt(int argc, char *argv[])
1033 {
1034
1035         code = togglevar(argc, argv, &interactive, "Interactive mode");
1036 }
1037
1038 /*
1039  * Toggle gate-ftp mode, or set gate-ftp server
1040  */
1041 /*VARARGS*/
1042 void
1043 setgate(int argc, char *argv[])
1044 {
1045         static char gsbuf[MAXHOSTNAMELEN];
1046
1047         if (argc == 0 || argc > 3) {
1048                 UPRINTF(
1049                     "usage: %s [ on | off | gateserver [port] ]\n", argv[0]);
1050                 code = -1;
1051                 return;
1052         } else if (argc < 2) {
1053                 gatemode = !gatemode;
1054         } else {
1055                 if (argc == 2 && strcasecmp(argv[1], "on") == 0)
1056                         gatemode = 1;
1057                 else if (argc == 2 && strcasecmp(argv[1], "off") == 0)
1058                         gatemode = 0;
1059                 else {
1060                         if (argc == 3)
1061                                 gateport = ftp_strdup(argv[2]);
1062                         (void)strlcpy(gsbuf, argv[1], sizeof(gsbuf));
1063                         gateserver = gsbuf;
1064                         gatemode = 1;
1065                 }
1066         }
1067         if (gatemode && (gateserver == NULL || *gateserver == '\0')) {
1068                 fprintf(ttyout,
1069                     "Disabling gate-ftp mode - no gate-ftp server defined.\n");
1070                 gatemode = 0;
1071         } else {
1072                 fprintf(ttyout, "Gate ftp: %s, server %s, port %s.\n",
1073                     onoff(gatemode), *gateserver ? gateserver : "(none)",
1074                     gateport);
1075         }
1076         code = gatemode;
1077 }
1078
1079 /*
1080  * Toggle metacharacter interpretation on local file names.
1081  */
1082 /*VARARGS*/
1083 void
1084 setglob(int argc, char *argv[])
1085 {
1086
1087         code = togglevar(argc, argv, &doglob, "Globbing");
1088 }
1089
1090 /*
1091  * Toggle preserving modification times on retrieved files.
1092  */
1093 /*VARARGS*/
1094 void
1095 setpreserve(int argc, char *argv[])
1096 {
1097
1098         code = togglevar(argc, argv, &preserve, "Preserve modification times");
1099 }
1100
1101 /*
1102  * Set debugging mode on/off and/or set level of debugging.
1103  */
1104 /*VARARGS*/
1105 void
1106 setdebug(int argc, char *argv[])
1107 {
1108         if (argc == 0 || argc > 2) {
1109                 UPRINTF("usage: %s [ on | off | debuglevel ]\n", argv[0]);
1110                 code = -1;
1111                 return;
1112         } else if (argc == 2) {
1113                 if (strcasecmp(argv[1], "on") == 0)
1114                         ftp_debug = 1;
1115                 else if (strcasecmp(argv[1], "off") == 0)
1116                         ftp_debug = 0;
1117                 else {
1118                         int val;
1119
1120                         val = strsuftoi(argv[1]);
1121                         if (val < 0) {
1122                                 fprintf(ttyout, "%s: bad debugging value.\n",
1123                                     argv[1]);
1124                                 code = -1;
1125                                 return;
1126                         }
1127                         ftp_debug = val;
1128                 }
1129         } else
1130                 ftp_debug = !ftp_debug;
1131         if (ftp_debug)
1132                 options |= SO_DEBUG;
1133         else
1134                 options &= ~SO_DEBUG;
1135         fprintf(ttyout, "Debugging %s (ftp_debug=%d).\n", onoff(ftp_debug), ftp_debug);
1136         code = ftp_debug > 0;
1137 }
1138
1139 /*
1140  * Set current working directory on remote machine.
1141  */
1142 void
1143 cd(int argc, char *argv[])
1144 {
1145         int r;
1146
1147         if (argc == 0 || argc > 2 ||
1148             (argc == 1 && !another(&argc, &argv, "remote-directory"))) {
1149                 UPRINTF("usage: %s remote-directory\n", argv[0]);
1150                 code = -1;
1151                 return;
1152         }
1153         r = command("CWD %s", argv[1]);
1154         if (r == ERROR && code == 500) {
1155                 if (verbose)
1156                         fputs("CWD command not recognized, trying XCWD.\n",
1157                             ttyout);
1158                 r = command("XCWD %s", argv[1]);
1159         }
1160         if (r == COMPLETE) {
1161                 dirchange = 1;
1162                 updateremotecwd();
1163         }
1164 }
1165
1166 /*
1167  * Set current working directory on local machine.
1168  */
1169 void
1170 lcd(int argc, char *argv[])
1171 {
1172         char *locdir;
1173
1174         code = -1;
1175         if (argc == 1) {
1176                 argc++;
1177                 argv[1] = localhome;
1178         }
1179         if (argc != 2) {
1180                 UPRINTF("usage: %s [local-directory]\n", argv[0]);
1181                 return;
1182         }
1183         if ((locdir = globulize(argv[1])) == NULL)
1184                 return;
1185         if (chdir(locdir) == -1)
1186                 warn("Can't chdir `%s'", locdir);
1187         else {
1188                 updatelocalcwd();
1189                 if (localcwd[0]) {
1190                         fprintf(ttyout, "Local directory now: %s\n", localcwd);
1191                         code = 0;
1192                 } else {
1193                         fprintf(ttyout, "Unable to determine local directory\n");
1194                 }
1195         }
1196         (void)free(locdir);
1197 }
1198
1199 /*
1200  * Delete a single file.
1201  */
1202 void
1203 delete(int argc, char *argv[])
1204 {
1205
1206         if (argc == 0 || argc > 2 ||
1207             (argc == 1 && !another(&argc, &argv, "remote-file"))) {
1208                 UPRINTF("usage: %s remote-file\n", argv[0]);
1209                 code = -1;
1210                 return;
1211         }
1212         if (command("DELE %s", argv[1]) == COMPLETE)
1213                 dirchange = 1;
1214 }
1215
1216 /*
1217  * Delete multiple files.
1218  */
1219 void
1220 mdelete(int argc, char *argv[])
1221 {
1222         sigfunc oldintr;
1223         int ointer;
1224         char *cp;
1225
1226         if (argc == 0 ||
1227             (argc == 1 && !another(&argc, &argv, "remote-files"))) {
1228                 UPRINTF("usage: %s [remote-files]\n", argv[0]);
1229                 code = -1;
1230                 return;
1231         }
1232         mflag = 1;
1233         oldintr = xsignal(SIGINT, mintr);
1234         if (sigsetjmp(jabort, 1))
1235                 mabort(argv[0]);
1236         while ((cp = remglob(argv, 0, NULL)) != NULL) {
1237                 if (*cp == '\0') {
1238                         mflag = 0;
1239                         continue;
1240                 }
1241                 if (mflag && confirm(argv[0], cp)) {
1242                         if (command("DELE %s", cp) == COMPLETE)
1243                                 dirchange = 1;
1244                         if (!mflag && fromatty) {
1245                                 ointer = interactive;
1246                                 interactive = 1;
1247                                 if (confirm(argv[0], NULL)) {
1248                                         mflag++;
1249                                 }
1250                                 interactive = ointer;
1251                         }
1252                 }
1253         }
1254         (void)xsignal(SIGINT, oldintr);
1255         mflag = 0;
1256 }
1257
1258 /*
1259  * Rename a remote file.
1260  */
1261 void
1262 renamefile(int argc, char *argv[])
1263 {
1264
1265         if (argc == 0 || (argc == 1 && !another(&argc, &argv, "from-name")))
1266                 goto usage;
1267         if ((argc < 3 && !another(&argc, &argv, "to-name")) || argc > 3) {
1268  usage:
1269                 UPRINTF("usage: %s from-name to-name\n", argv[0]);
1270                 code = -1;
1271                 return;
1272         }
1273         if (command("RNFR %s", argv[1]) == CONTINUE &&
1274             command("RNTO %s", argv[2]) == COMPLETE)
1275                 dirchange = 1;
1276 }
1277
1278 /*
1279  * Get a directory listing of remote files.
1280  * Supports being invoked as:
1281  *      cmd             runs
1282  *      ---             ----
1283  *      dir, ls         LIST
1284  *      mlsd            MLSD
1285  *      nlist           NLST
1286  *      pdir, pls       LIST |$PAGER
1287  *      pmlsd           MLSD |$PAGER
1288  */
1289 void
1290 ls(int argc, char *argv[])
1291 {
1292         const char *cmd;
1293         char *remdir, *locbuf;
1294         const char *locfile;
1295         int pagecmd, mlsdcmd;
1296
1297         remdir = NULL;
1298         locbuf = NULL;
1299         locfile = "-";
1300         pagecmd = mlsdcmd = 0;
1301                         /*
1302                          * the only commands that start with `p' are
1303                          * the `pager' versions.
1304                          */
1305         if (argv[0][0] == 'p')
1306                 pagecmd = 1;
1307         if (strcmp(argv[0] + pagecmd , "mlsd") == 0) {
1308                 if (! features[FEAT_MLST]) {
1309                         fprintf(ttyout,
1310                            "MLSD is not supported by the remote server.\n");
1311                         return;
1312                 }
1313                 mlsdcmd = 1;
1314         }
1315         if (argc == 0)
1316                 goto usage;
1317
1318         if (mlsdcmd)
1319                 cmd = "MLSD";
1320         else if (strcmp(argv[0] + pagecmd, "nlist") == 0)
1321                 cmd = "NLST";
1322         else
1323                 cmd = "LIST";
1324
1325         if (argc > 1)
1326                 remdir = argv[1];
1327         if (argc > 2)
1328                 locfile = argv[2];
1329         if (argc > 3 || ((pagecmd | mlsdcmd) && argc > 2)) {
1330  usage:
1331                 if (pagecmd || mlsdcmd)
1332                         UPRINTF("usage: %s [remote-path]\n", argv[0]);
1333                 else
1334                         UPRINTF("usage: %s [remote-path [local-file]]\n",
1335                             argv[0]);
1336                 code = -1;
1337                 goto freels;
1338         }
1339
1340         if (pagecmd) {
1341                 const char *p;
1342                 size_t len;
1343
1344                 p = getoptionvalue("pager");
1345                 if (EMPTYSTRING(p))
1346                         p = DEFAULTPAGER;
1347                 len = strlen(p) + 2;
1348                 locbuf = ftp_malloc(len);
1349                 locbuf[0] = '|';
1350                 (void)strlcpy(locbuf + 1, p, len - 1);
1351                 locfile = locbuf;
1352         } else if ((strcmp(locfile, "-") != 0) && *locfile != '|') {
1353                 if ((locbuf = globulize(locfile)) == NULL ||
1354                     !confirm("output to local-file:", locbuf)) {
1355                         code = -1;
1356                         goto freels;
1357                 }
1358                 locfile = locbuf;
1359         }
1360         recvrequest(cmd, locfile, remdir, "w", 0, 0);
1361  freels:
1362         if (locbuf)
1363                 (void)free(locbuf);
1364 }
1365
1366 /*
1367  * Get a directory listing of multiple remote files.
1368  */
1369 void
1370 mls(int argc, char *argv[])
1371 {
1372         sigfunc oldintr;
1373         int ointer, i;
1374         int volatile dolist;
1375         char * volatile dest, *odest;
1376         const char *lmode;
1377
1378         if (argc == 0)
1379                 goto usage;
1380         if (argc < 2 && !another(&argc, &argv, "remote-files"))
1381                 goto usage;
1382         if (argc < 3 && !another(&argc, &argv, "local-file")) {
1383  usage:
1384                 UPRINTF("usage: %s remote-files local-file\n", argv[0]);
1385                 code = -1;
1386                 return;
1387         }
1388         odest = dest = argv[argc - 1];
1389         argv[argc - 1] = NULL;
1390         if (strcmp(dest, "-") && *dest != '|')
1391                 if (((dest = globulize(dest)) == NULL) ||
1392                     !confirm("output to local-file:", dest)) {
1393                         code = -1;
1394                         return;
1395         }
1396         dolist = strcmp(argv[0], "mls");
1397         mflag = 1;
1398         oldintr = xsignal(SIGINT, mintr);
1399         if (sigsetjmp(jabort, 1))
1400                 mabort(argv[0]);
1401         for (i = 1; mflag && i < argc-1 && connected; i++) {
1402                 lmode = (i == 1) ? "w" : "a";
1403                 recvrequest(dolist ? "LIST" : "NLST", dest, argv[i], lmode,
1404                     0, 0);
1405                 if (!mflag && fromatty) {
1406                         ointer = interactive;
1407                         interactive = 1;
1408                         if (confirm(argv[0], NULL)) {
1409                                 mflag++;
1410                         }
1411                         interactive = ointer;
1412                 }
1413         }
1414         (void)xsignal(SIGINT, oldintr);
1415         mflag = 0;
1416         if (dest != odest)                      /* free up after globulize() */
1417                 free(dest);
1418 }
1419
1420 /*
1421  * Do a shell escape
1422  */
1423 /*ARGSUSED*/
1424 void
1425 shell(int argc, char *argv[])
1426 {
1427         pid_t pid;
1428         sigfunc oldintr;
1429         char shellnam[MAXPATHLEN];
1430         const char *shellp, *namep;
1431         int wait_status;
1432
1433         if (argc == 0) {
1434                 UPRINTF("usage: %s [command [args]]\n", argv[0]);
1435                 code = -1;
1436                 return;
1437         }
1438         oldintr = xsignal(SIGINT, SIG_IGN);
1439         if ((pid = fork()) == 0) {
1440                 for (pid = 3; pid < 20; pid++)
1441                         (void)close(pid);
1442                 (void)xsignal(SIGINT, SIG_DFL);
1443                 shellp = getenv("SHELL");
1444                 if (shellp == NULL)
1445                         shellp = _PATH_BSHELL;
1446                 namep = strrchr(shellp, '/');
1447                 if (namep == NULL)
1448                         namep = shellp;
1449                 else
1450                         namep++;
1451                 (void)strlcpy(shellnam, namep, sizeof(shellnam));
1452                 if (ftp_debug) {
1453                         fputs(shellp, ttyout);
1454                         putc('\n', ttyout);
1455                 }
1456                 if (argc > 1) {
1457                         execl(shellp, shellnam, "-c", altarg, (char *)0);
1458                 }
1459                 else {
1460                         execl(shellp, shellnam, (char *)0);
1461                 }
1462                 warn("Can't execute `%s'", shellp);
1463                 code = -1;
1464                 exit(1);
1465         }
1466         if (pid > 0)
1467                 while (wait(&wait_status) != pid)
1468                         ;
1469         (void)xsignal(SIGINT, oldintr);
1470         if (pid == -1) {
1471                 warn("Can't fork a subshell; try again later");
1472                 code = -1;
1473         } else
1474                 code = 0;
1475 }
1476
1477 /*
1478  * Send new user information (re-login)
1479  */
1480 void
1481 user(int argc, char *argv[])
1482 {
1483         char *password;
1484         char emptypass[] = "";
1485         int n, aflag = 0;
1486
1487         if (argc == 0)
1488                 goto usage;
1489         if (argc < 2)
1490                 (void)another(&argc, &argv, "username");
1491         if (argc < 2 || argc > 4) {
1492  usage:
1493                 UPRINTF("usage: %s username [password [account]]\n",
1494                     argv[0]);
1495                 code = -1;
1496                 return;
1497         }
1498         n = command("USER %s", argv[1]);
1499         if (n == CONTINUE) {
1500                 if (argc < 3) {
1501                         password = getpass("Password: ");
1502                         if (password == NULL)
1503                                 password = emptypass;
1504                 } else {
1505                         password = argv[2];
1506                 }
1507                 n = command("PASS %s", password);
1508                 memset(password, 0, strlen(password));
1509         }
1510         if (n == CONTINUE) {
1511                 aflag++;
1512                 if (argc < 4) {
1513                         password = getpass("Account: ");
1514                         if (password == NULL)
1515                                 password = emptypass;
1516                 } else {
1517                         password = argv[3];
1518                 }
1519                 n = command("ACCT %s", password);
1520                 memset(password, 0, strlen(password));
1521         }
1522         if (n != COMPLETE) {
1523                 fputs("Login failed.\n", ttyout);
1524                 return;
1525         }
1526         if (!aflag && argc == 4) {
1527                 password = argv[3];
1528                 (void)command("ACCT %s", password);
1529                 memset(password, 0, strlen(password));
1530         }
1531         connected = -1;
1532         getremoteinfo();
1533 }
1534
1535 /*
1536  * Print working directory on remote machine.
1537  */
1538 /*VARARGS*/
1539 void
1540 pwd(int argc, char *argv[])
1541 {
1542
1543         code = -1;
1544         if (argc != 1) {
1545                 UPRINTF("usage: %s\n", argv[0]);
1546                 return;
1547         }
1548         if (! remotecwd[0])
1549                 updateremotecwd();
1550         if (! remotecwd[0])
1551                 fprintf(ttyout, "Unable to determine remote directory\n");
1552         else {
1553                 fprintf(ttyout, "Remote directory: %s\n", remotecwd);
1554                 code = 0;
1555         }
1556 }
1557
1558 /*
1559  * Print working directory on local machine.
1560  */
1561 void
1562 lpwd(int argc, char *argv[])
1563 {
1564
1565         code = -1;
1566         if (argc != 1) {
1567                 UPRINTF("usage: %s\n", argv[0]);
1568                 return;
1569         }
1570         if (! localcwd[0])
1571                 updatelocalcwd();
1572         if (! localcwd[0])
1573                 fprintf(ttyout, "Unable to determine local directory\n");
1574         else {
1575                 fprintf(ttyout, "Local directory: %s\n", localcwd);
1576                 code = 0;
1577         }
1578 }
1579
1580 /*
1581  * Make a directory.
1582  */
1583 void
1584 makedir(int argc, char *argv[])
1585 {
1586         int r;
1587
1588         if (argc == 0 || argc > 2 ||
1589             (argc == 1 && !another(&argc, &argv, "directory-name"))) {
1590                 UPRINTF("usage: %s directory-name\n", argv[0]);
1591                 code = -1;
1592                 return;
1593         }
1594         r = command("MKD %s", argv[1]);
1595         if (r == ERROR && code == 500) {
1596                 if (verbose)
1597                         fputs("MKD command not recognized, trying XMKD.\n",
1598                             ttyout);
1599                 r = command("XMKD %s", argv[1]);
1600         }
1601         if (r == COMPLETE)
1602                 dirchange = 1;
1603 }
1604
1605 /*
1606  * Remove a directory.
1607  */
1608 void
1609 removedir(int argc, char *argv[])
1610 {
1611         int r;
1612
1613         if (argc == 0 || argc > 2 ||
1614             (argc == 1 && !another(&argc, &argv, "directory-name"))) {
1615                 UPRINTF("usage: %s directory-name\n", argv[0]);
1616                 code = -1;
1617                 return;
1618         }
1619         r = command("RMD %s", argv[1]);
1620         if (r == ERROR && code == 500) {
1621                 if (verbose)
1622                         fputs("RMD command not recognized, trying XRMD.\n",
1623                             ttyout);
1624                 r = command("XRMD %s", argv[1]);
1625         }
1626         if (r == COMPLETE)
1627                 dirchange = 1;
1628 }
1629
1630 /*
1631  * Send a line, verbatim, to the remote machine.
1632  */
1633 void
1634 quote(int argc, char *argv[])
1635 {
1636
1637         if (argc == 0 ||
1638             (argc == 1 && !another(&argc, &argv, "command line to send"))) {
1639                 UPRINTF("usage: %s line-to-send\n", argv[0]);
1640                 code = -1;
1641                 return;
1642         }
1643         quote1("", argc, argv);
1644 }
1645
1646 /*
1647  * Send a SITE command to the remote machine.  The line
1648  * is sent verbatim to the remote machine, except that the
1649  * word "SITE" is added at the front.
1650  */
1651 void
1652 site(int argc, char *argv[])
1653 {
1654
1655         if (argc == 0 ||
1656             (argc == 1 && !another(&argc, &argv, "arguments to SITE command"))){
1657                 UPRINTF("usage: %s line-to-send\n", argv[0]);
1658                 code = -1;
1659                 return;
1660         }
1661         quote1("SITE ", argc, argv);
1662 }
1663
1664 /*
1665  * Turn argv[1..argc) into a space-separated string, then prepend initial text.
1666  * Send the result as a one-line command and get response.
1667  */
1668 void
1669 quote1(const char *initial, int argc, char *argv[])
1670 {
1671         int i;
1672         char buf[BUFSIZ];               /* must be >= sizeof(line) */
1673
1674         (void)strlcpy(buf, initial, sizeof(buf));
1675         for (i = 1; i < argc; i++) {
1676                 (void)strlcat(buf, argv[i], sizeof(buf));
1677                 if (i < (argc - 1))
1678                         (void)strlcat(buf, " ", sizeof(buf));
1679         }
1680         if (command("%s", buf) == PRELIM) {
1681                 while (getreply(0) == PRELIM)
1682                         continue;
1683         }
1684         dirchange = 1;
1685 }
1686
1687 void
1688 do_chmod(int argc, char *argv[])
1689 {
1690
1691         if (argc == 0 || (argc == 1 && !another(&argc, &argv, "mode")))
1692                 goto usage;
1693         if ((argc < 3 && !another(&argc, &argv, "remote-file")) || argc > 3) {
1694  usage:
1695                 UPRINTF("usage: %s mode remote-file\n", argv[0]);
1696                 code = -1;
1697                 return;
1698         }
1699         (void)command("SITE CHMOD %s %s", argv[1], argv[2]);
1700 }
1701
1702 #define COMMAND_1ARG(argc, argv, cmd)                   \
1703         if (argc == 1)                                  \
1704                 command(cmd);                           \
1705         else                                            \
1706                 command(cmd " %s", argv[1])
1707
1708 void
1709 do_umask(int argc, char *argv[])
1710 {
1711         int oldverbose = verbose;
1712
1713         if (argc == 0) {
1714                 UPRINTF("usage: %s [umask]\n", argv[0]);
1715                 code = -1;
1716                 return;
1717         }
1718         verbose = 1;
1719         COMMAND_1ARG(argc, argv, "SITE UMASK");
1720         verbose = oldverbose;
1721 }
1722
1723 void
1724 idlecmd(int argc, char *argv[])
1725 {
1726         int oldverbose = verbose;
1727
1728         if (argc < 1 || argc > 2) {
1729                 UPRINTF("usage: %s [seconds]\n", argv[0]);
1730                 code = -1;
1731                 return;
1732         }
1733         verbose = 1;
1734         COMMAND_1ARG(argc, argv, "SITE IDLE");
1735         verbose = oldverbose;
1736 }
1737
1738 /*
1739  * Ask the other side for help.
1740  */
1741 void
1742 rmthelp(int argc, char *argv[])
1743 {
1744         int oldverbose = verbose;
1745
1746         if (argc == 0) {
1747                 UPRINTF("usage: %s\n", argv[0]);
1748                 code = -1;
1749                 return;
1750         }
1751         verbose = 1;
1752         COMMAND_1ARG(argc, argv, "HELP");
1753         verbose = oldverbose;
1754 }
1755
1756 /*
1757  * Terminate session and exit.
1758  * May be called with 0, NULL.
1759  */
1760 /*VARARGS*/
1761 void
1762 quit(int argc, char *argv[])
1763 {
1764
1765                         /* this may be called with argc == 0, argv == NULL */
1766         if (argc == 0 && argv != NULL) {
1767                 UPRINTF("usage: %s\n", argv[0]);
1768                 code = -1;
1769                 return;
1770         }
1771         if (connected)
1772                 disconnect(0, NULL);
1773         pswitch(1);
1774         if (connected)
1775                 disconnect(0, NULL);
1776         exit(0);
1777 }
1778
1779 /*
1780  * Terminate session, but don't exit.
1781  * May be called with 0, NULL.
1782  */
1783 void
1784 disconnect(int argc, char *argv[])
1785 {
1786
1787                         /* this may be called with argc == 0, argv == NULL */
1788         if (argc == 0 && argv != NULL) {
1789                 UPRINTF("usage: %s\n", argv[0]);
1790                 code = -1;
1791                 return;
1792         }
1793         if (!connected)
1794                 return;
1795         (void)command("QUIT");
1796         cleanuppeer();
1797 }
1798
1799 void
1800 account(int argc, char *argv[])
1801 {
1802         char *ap;
1803         char emptypass[] = "";
1804
1805         if (argc == 0 || argc > 2) {
1806                 UPRINTF("usage: %s [password]\n", argv[0]);
1807                 code = -1;
1808                 return;
1809         }
1810         else if (argc == 2)
1811                 ap = argv[1];
1812         else {
1813                 ap = getpass("Account:");
1814                 if (ap == NULL)
1815                         ap = emptypass;
1816         }
1817         (void)command("ACCT %s", ap);
1818         memset(ap, 0, strlen(ap));
1819 }
1820
1821 sigjmp_buf abortprox;
1822
1823 void
1824 proxabort(int notused)
1825 {
1826
1827         sigint_raised = 1;
1828         alarmtimer(0);
1829         if (!proxy) {
1830                 pswitch(1);
1831         }
1832         if (connected) {
1833                 proxflag = 1;
1834         }
1835         else {
1836                 proxflag = 0;
1837         }
1838         pswitch(0);
1839         siglongjmp(abortprox, 1);
1840 }
1841
1842 void
1843 doproxy(int argc, char *argv[])
1844 {
1845         struct cmd *c;
1846         int cmdpos;
1847         sigfunc oldintr;
1848         char cmdbuf[MAX_C_NAME];
1849
1850         if (argc == 0 || (argc == 1 && !another(&argc, &argv, "command"))) {
1851                 UPRINTF("usage: %s command\n", argv[0]);
1852                 code = -1;
1853                 return;
1854         }
1855         c = getcmd(argv[1]);
1856         if (c == (struct cmd *) -1) {
1857                 fputs("?Ambiguous command.\n", ttyout);
1858                 code = -1;
1859                 return;
1860         }
1861         if (c == 0) {
1862                 fputs("?Invalid command.\n", ttyout);
1863                 code = -1;
1864                 return;
1865         }
1866         if (!c->c_proxy) {
1867                 fputs("?Invalid proxy command.\n", ttyout);
1868                 code = -1;
1869                 return;
1870         }
1871         if (sigsetjmp(abortprox, 1)) {
1872                 code = -1;
1873                 return;
1874         }
1875         oldintr = xsignal(SIGINT, proxabort);
1876         pswitch(1);
1877         if (c->c_conn && !connected) {
1878                 fputs("Not connected.\n", ttyout);
1879                 pswitch(0);
1880                 (void)xsignal(SIGINT, oldintr);
1881                 code = -1;
1882                 return;
1883         }
1884         cmdpos = strcspn(line, " \t");
1885         if (cmdpos > 0)         /* remove leading "proxy " from input buffer */
1886                 memmove(line, line + cmdpos + 1, strlen(line) - cmdpos + 1);
1887         (void)strlcpy(cmdbuf, c->c_name, sizeof(cmdbuf));
1888         argv[1] = cmdbuf;
1889         (*c->c_handler)(argc-1, argv+1);
1890         if (connected) {
1891                 proxflag = 1;
1892         }
1893         else {
1894                 proxflag = 0;
1895         }
1896         pswitch(0);
1897         (void)xsignal(SIGINT, oldintr);
1898 }
1899
1900 void
1901 setcase(int argc, char *argv[])
1902 {
1903
1904         code = togglevar(argc, argv, &mcase, "Case mapping");
1905 }
1906
1907 /*
1908  * convert the given name to lower case if it's all upper case, into
1909  * a static buffer which is returned to the caller
1910  */
1911 static const char *
1912 docase(char *dst, size_t dlen, const char *src)
1913 {
1914         size_t i;
1915         int dochange = 1;
1916
1917         for (i = 0; src[i] != '\0' && i < dlen - 1; i++) {
1918                 dst[i] = src[i];
1919                 if (islower((unsigned char)dst[i]))
1920                         dochange = 0;
1921         }
1922         dst[i] = '\0';
1923
1924         if (dochange) {
1925                 for (i = 0; dst[i] != '\0'; i++)
1926                         if (isupper((unsigned char)dst[i]))
1927                                 dst[i] = tolower((unsigned char)dst[i]);
1928         }
1929         return dst;
1930 }
1931
1932 void
1933 setcr(int argc, char *argv[])
1934 {
1935
1936         code = togglevar(argc, argv, &crflag, "Carriage Return stripping");
1937 }
1938
1939 void
1940 setntrans(int argc, char *argv[])
1941 {
1942
1943         if (argc == 0 || argc > 3) {
1944                 UPRINTF("usage: %s [inchars [outchars]]\n", argv[0]);
1945                 code = -1;
1946                 return;
1947         }
1948         if (argc == 1) {
1949                 ntflag = 0;
1950                 fputs("Ntrans off.\n", ttyout);
1951                 code = ntflag;
1952                 return;
1953         }
1954         ntflag++;
1955         code = ntflag;
1956         (void)strlcpy(ntin, argv[1], sizeof(ntin));
1957         if (argc == 2) {
1958                 ntout[0] = '\0';
1959                 return;
1960         }
1961         (void)strlcpy(ntout, argv[2], sizeof(ntout));
1962 }
1963
1964 static const char *
1965 dotrans(char *dst, size_t dlen, const char *src)
1966 {
1967         const char *cp1;
1968         char *cp2 = dst;
1969         size_t i, ostop;
1970
1971         for (ostop = 0; *(ntout + ostop) && ostop < 16; ostop++)
1972                 continue;
1973         for (cp1 = src; *cp1; cp1++) {
1974                 int found = 0;
1975                 for (i = 0; *(ntin + i) && i < 16; i++) {
1976                         if (*cp1 == *(ntin + i)) {
1977                                 found++;
1978                                 if (i < ostop) {
1979                                         *cp2++ = *(ntout + i);
1980                                         if (cp2 - dst >= (ptrdiff_t)(dlen - 1))
1981                                                 goto out;
1982                                 }
1983                                 break;
1984                         }
1985                 }
1986                 if (!found) {
1987                         *cp2++ = *cp1;
1988                 }
1989         }
1990 out:
1991         *cp2 = '\0';
1992         return dst;
1993 }
1994
1995 void
1996 setnmap(int argc, char *argv[])
1997 {
1998         char *cp;
1999
2000         if (argc == 1) {
2001                 mapflag = 0;
2002                 fputs("Nmap off.\n", ttyout);
2003                 code = mapflag;
2004                 return;
2005         }
2006         if (argc == 0 ||
2007             (argc < 3 && !another(&argc, &argv, "mapout")) || argc > 3) {
2008                 UPRINTF("usage: %s [mapin mapout]\n", argv[0]);
2009                 code = -1;
2010                 return;
2011         }
2012         mapflag = 1;
2013         code = 1;
2014         cp = strchr(altarg, ' ');
2015         if (proxy) {
2016                 while(*++cp == ' ')
2017                         continue;
2018                 altarg = cp;
2019                 cp = strchr(altarg, ' ');
2020         }
2021         *cp = '\0';
2022         (void)strlcpy(mapin, altarg, MAXPATHLEN);
2023         while (*++cp == ' ')
2024                 continue;
2025         (void)strlcpy(mapout, cp, MAXPATHLEN);
2026 }
2027
2028 static const char *
2029 domap(char *dst, size_t dlen, const char *src)
2030 {
2031         const char *cp1 = src;
2032         char *cp2 = mapin;
2033         const char *tp[9], *te[9];
2034         int i, toks[9], toknum = 0, match = 1;
2035
2036         for (i=0; i < 9; ++i) {
2037                 toks[i] = 0;
2038         }
2039         while (match && *cp1 && *cp2) {
2040                 switch (*cp2) {
2041                         case '\\':
2042                                 if (*++cp2 != *cp1) {
2043                                         match = 0;
2044                                 }
2045                                 break;
2046                         case '$':
2047                                 if (*(cp2+1) >= '1' && (*cp2+1) <= '9') {
2048                                         if (*cp1 != *(++cp2+1)) {
2049                                                 toks[toknum = *cp2 - '1']++;
2050                                                 tp[toknum] = cp1;
2051                                                 while (*++cp1 && *(cp2+1)
2052                                                         != *cp1);
2053                                                 te[toknum] = cp1;
2054                                         }
2055                                         cp2++;
2056                                         break;
2057                                 }
2058                                 /* FALLTHROUGH */
2059                         default:
2060                                 if (*cp2 != *cp1) {
2061                                         match = 0;
2062                                 }
2063                                 break;
2064                 }
2065                 if (match && *cp1) {
2066                         cp1++;
2067                 }
2068                 if (match && *cp2) {
2069                         cp2++;
2070                 }
2071         }
2072         if (!match && *cp1) /* last token mismatch */
2073         {
2074                 toks[toknum] = 0;
2075         }
2076         cp2 = dst;
2077         *cp2 = '\0';
2078         cp1 = mapout;
2079         while (*cp1) {
2080                 match = 0;
2081                 switch (*cp1) {
2082                         case '\\':
2083                                 if (*(cp1 + 1)) {
2084                                         *cp2++ = *++cp1;
2085                                 }
2086                                 break;
2087                         case '[':
2088 LOOP:
2089                                 if (*++cp1 == '$' &&
2090                                     isdigit((unsigned char)*(cp1+1))) {
2091                                         if (*++cp1 == '0') {
2092                                                 const char *cp3 = src;
2093
2094                                                 while (*cp3) {
2095                                                         *cp2++ = *cp3++;
2096                                                 }
2097                                                 match = 1;
2098                                         }
2099                                         else if (toks[toknum = *cp1 - '1']) {
2100                                                 const char *cp3 = tp[toknum];
2101
2102                                                 while (cp3 != te[toknum]) {
2103                                                         *cp2++ = *cp3++;
2104                                                 }
2105                                                 match = 1;
2106                                         }
2107                                 }
2108                                 else {
2109                                         while (*cp1 && *cp1 != ',' &&
2110                                             *cp1 != ']') {
2111                                                 if (*cp1 == '\\') {
2112                                                         cp1++;
2113                                                 }
2114                                                 else if (*cp1 == '$' &&
2115                                                     isdigit((unsigned char)*(cp1+1))) {
2116                                                         if (*++cp1 == '0') {
2117                                                            const char *cp3 = src;
2118
2119                                                            while (*cp3) {
2120                                                                 *cp2++ = *cp3++;
2121                                                            }
2122                                                         }
2123                                                         else if (toks[toknum =
2124                                                             *cp1 - '1']) {
2125                                                            const char *cp3=tp[toknum];
2126
2127                                                            while (cp3 !=
2128                                                                   te[toknum]) {
2129                                                                 *cp2++ = *cp3++;
2130                                                            }
2131                                                         }
2132                                                 }
2133                                                 else if (*cp1) {
2134                                                         *cp2++ = *cp1++;
2135                                                 }
2136                                         }
2137                                         if (!*cp1) {
2138                                                 fputs(
2139                                                 "nmap: unbalanced brackets.\n",
2140                                                     ttyout);
2141                                                 return (src);
2142                                         }
2143                                         match = 1;
2144                                         cp1--;
2145                                 }
2146                                 if (match) {
2147                                         while (*++cp1 && *cp1 != ']') {
2148                                               if (*cp1 == '\\' && *(cp1 + 1)) {
2149                                                         cp1++;
2150                                               }
2151                                         }
2152                                         if (!*cp1) {
2153                                                 fputs(
2154                                                 "nmap: unbalanced brackets.\n",
2155                                                     ttyout);
2156                                                 return (src);
2157                                         }
2158                                         break;
2159                                 }
2160                                 switch (*++cp1) {
2161                                         case ',':
2162                                                 goto LOOP;
2163                                         case ']':
2164                                                 break;
2165                                         default:
2166                                                 cp1--;
2167                                                 goto LOOP;
2168                                 }
2169                                 break;
2170                         case '$':
2171                                 if (isdigit((unsigned char)*(cp1 + 1))) {
2172                                         if (*++cp1 == '0') {
2173                                                 const char *cp3 = src;
2174
2175                                                 while (*cp3) {
2176                                                         *cp2++ = *cp3++;
2177                                                 }
2178                                         }
2179                                         else if (toks[toknum = *cp1 - '1']) {
2180                                                 const char *cp3 = tp[toknum];
2181
2182                                                 while (cp3 != te[toknum]) {
2183                                                         *cp2++ = *cp3++;
2184                                                 }
2185                                         }
2186                                         break;
2187                                 }
2188                                 /* intentional drop through */
2189                         default:
2190                                 *cp2++ = *cp1;
2191                                 break;
2192                 }
2193                 cp1++;
2194         }
2195         *cp2 = '\0';
2196         return *dst ? dst : src;
2197 }
2198
2199 void
2200 setpassive(int argc, char *argv[])
2201 {
2202
2203         if (argc == 1) {
2204                 passivemode = !passivemode;
2205                 activefallback = passivemode;
2206         } else if (argc != 2) {
2207  passiveusage:
2208                 UPRINTF("usage: %s [ on | off | auto ]\n", argv[0]);
2209                 code = -1;
2210                 return;
2211         } else if (strcasecmp(argv[1], "on") == 0) {
2212                 passivemode = 1;
2213                 activefallback = 0;
2214         } else if (strcasecmp(argv[1], "off") == 0) {
2215                 passivemode = 0;
2216                 activefallback = 0;
2217         } else if (strcasecmp(argv[1], "auto") == 0) {
2218                 passivemode = 1;
2219                 activefallback = 1;
2220         } else
2221                 goto passiveusage;
2222         fprintf(ttyout, "Passive mode: %s; fallback to active mode: %s.\n",
2223             onoff(passivemode), onoff(activefallback));
2224         code = passivemode;
2225 }
2226
2227
2228 void
2229 setepsv4(int argc, char *argv[])
2230 {
2231         code = togglevar(argc, argv, &epsv4,
2232             verbose ? "EPSV/EPRT on IPv4" : NULL);
2233         epsv4bad = 0;
2234 }
2235
2236 void
2237 setepsv6(int argc, char *argv[])
2238 {
2239         code = togglevar(argc, argv, &epsv6,
2240             verbose ? "EPSV/EPRT on IPv6" : NULL);
2241         epsv6bad = 0;
2242 }
2243
2244 void
2245 setepsv(int argc, char*argv[])
2246 {
2247         setepsv4(argc,argv);
2248         setepsv6(argc,argv);
2249 }
2250
2251 void
2252 setsunique(int argc, char *argv[])
2253 {
2254
2255         code = togglevar(argc, argv, &sunique, "Store unique");
2256 }
2257
2258 void
2259 setrunique(int argc, char *argv[])
2260 {
2261
2262         code = togglevar(argc, argv, &runique, "Receive unique");
2263 }
2264
2265 int
2266 parserate(int argc, char *argv[], int cmdlineopt)
2267 {
2268         int dir, max, incr, showonly;
2269         sigfunc oldusr1, oldusr2;
2270
2271         if (argc > 4 || (argc < (cmdlineopt ? 3 : 2))) {
2272  usage:
2273                 if (cmdlineopt)
2274                         UPRINTF(
2275         "usage: %s (all|get|put),maximum-bytes[,increment-bytes]]\n",
2276                             argv[0]);
2277                 else
2278                         UPRINTF(
2279         "usage: %s (all|get|put) [maximum-bytes [increment-bytes]]\n",
2280                             argv[0]);
2281                 return -1;
2282         }
2283         dir = max = incr = showonly = 0;
2284 #define RATE_GET        1
2285 #define RATE_PUT        2
2286 #define RATE_ALL        (RATE_GET | RATE_PUT)
2287
2288         if (strcasecmp(argv[1], "all") == 0)
2289                 dir = RATE_ALL;
2290         else if (strcasecmp(argv[1], "get") == 0)
2291                 dir = RATE_GET;
2292         else if (strcasecmp(argv[1], "put") == 0)
2293                 dir = RATE_PUT;
2294         else
2295                 goto usage;
2296
2297         if (argc >= 3) {
2298                 if ((max = strsuftoi(argv[2])) < 0)
2299                         goto usage;
2300         } else
2301                 showonly = 1;
2302
2303         if (argc == 4) {
2304                 if ((incr = strsuftoi(argv[3])) <= 0)
2305                         goto usage;
2306         } else
2307                 incr = DEFAULTINCR;
2308
2309         oldusr1 = xsignal(SIGUSR1, SIG_IGN);
2310         oldusr2 = xsignal(SIGUSR2, SIG_IGN);
2311         if (dir & RATE_GET) {
2312                 if (!showonly) {
2313                         rate_get = max;
2314                         rate_get_incr = incr;
2315                 }
2316                 if (!cmdlineopt || verbose)
2317                         fprintf(ttyout,
2318                 "Get transfer rate throttle: %s; maximum: %d; increment %d.\n",
2319                             onoff(rate_get), rate_get, rate_get_incr);
2320         }
2321         if (dir & RATE_PUT) {
2322                 if (!showonly) {
2323                         rate_put = max;
2324                         rate_put_incr = incr;
2325                 }
2326                 if (!cmdlineopt || verbose)
2327                         fprintf(ttyout,
2328                 "Put transfer rate throttle: %s; maximum: %d; increment %d.\n",
2329                             onoff(rate_put), rate_put, rate_put_incr);
2330         }
2331         (void)xsignal(SIGUSR1, oldusr1);
2332         (void)xsignal(SIGUSR2, oldusr2);
2333         return 0;
2334 }
2335
2336 void
2337 setrate(int argc, char *argv[])
2338 {
2339
2340         code = parserate(argc, argv, 0);
2341 }
2342
2343 /* change directory to parent directory */
2344 void
2345 cdup(int argc, char *argv[])
2346 {
2347         int r;
2348
2349         if (argc == 0) {
2350                 UPRINTF("usage: %s\n", argv[0]);
2351                 code = -1;
2352                 return;
2353         }
2354         r = command("CDUP");
2355         if (r == ERROR && code == 500) {
2356                 if (verbose)
2357                         fputs("CDUP command not recognized, trying XCUP.\n",
2358                             ttyout);
2359                 r = command("XCUP");
2360         }
2361         if (r == COMPLETE) {
2362                 dirchange = 1;
2363                 updateremotecwd();
2364         }
2365 }
2366
2367 /*
2368  * Restart transfer at specific point
2369  */
2370 void
2371 restart(int argc, char *argv[])
2372 {
2373
2374         if (argc == 0 || argc > 2) {
2375                 UPRINTF("usage: %s [restart-point]\n", argv[0]);
2376                 code = -1;
2377                 return;
2378         }
2379         if (! features[FEAT_REST_STREAM]) {
2380                 fprintf(ttyout,
2381                     "Restart is not supported by the remote server.\n");
2382                 return;
2383         }
2384         if (argc == 2) {
2385                 off_t rp;
2386                 char *ep;
2387
2388                 rp = STRTOLL(argv[1], &ep, 10);
2389                 if (rp < 0 || *ep != '\0')
2390                         fprintf(ttyout, "restart: Invalid offset `%s'\n",
2391                             argv[1]);
2392                 else
2393                         restart_point = rp;
2394         }
2395         if (restart_point == 0)
2396                 fputs("No restart point defined.\n", ttyout);
2397         else
2398                 fprintf(ttyout,
2399                     "Restarting at " LLF " for next get, put or append\n",
2400                     (LLT)restart_point);
2401 }
2402
2403 /*
2404  * Show remote system type
2405  */
2406 void
2407 syst(int argc, char *argv[])
2408 {
2409         int oldverbose = verbose;
2410
2411         if (argc == 0) {
2412                 UPRINTF("usage: %s\n", argv[0]);
2413                 code = -1;
2414                 return;
2415         }
2416         verbose = 1;    /* If we aren't verbose, this doesn't do anything! */
2417         (void)command("SYST");
2418         verbose = oldverbose;
2419 }
2420
2421 void
2422 macdef(int argc, char *argv[])
2423 {
2424         char *tmp;
2425         int c;
2426
2427         if (argc == 0)
2428                 goto usage;
2429         if (macnum == 16) {
2430                 fputs("Limit of 16 macros have already been defined.\n",
2431                     ttyout);
2432                 code = -1;
2433                 return;
2434         }
2435         if ((argc < 2 && !another(&argc, &argv, "macro name")) || argc > 2) {
2436  usage:
2437                 UPRINTF("usage: %s macro_name\n", argv[0]);
2438                 code = -1;
2439                 return;
2440         }
2441         if (interactive)
2442                 fputs(
2443                 "Enter macro line by line, terminating it with a null line.\n",
2444                     ttyout);
2445         (void)strlcpy(macros[macnum].mac_name, argv[1],
2446             sizeof(macros[macnum].mac_name));
2447         if (macnum == 0)
2448                 macros[macnum].mac_start = macbuf;
2449         else
2450                 macros[macnum].mac_start = macros[macnum - 1].mac_end + 1;
2451         tmp = macros[macnum].mac_start;
2452         while (tmp != macbuf+4096) {
2453                 if ((c = getchar()) == EOF) {
2454                         fputs("macdef: end of file encountered.\n", ttyout);
2455                         code = -1;
2456                         return;
2457                 }
2458                 if ((*tmp = c) == '\n') {
2459                         if (tmp == macros[macnum].mac_start) {
2460                                 macros[macnum++].mac_end = tmp;
2461                                 code = 0;
2462                                 return;
2463                         }
2464                         if (*(tmp-1) == '\0') {
2465                                 macros[macnum++].mac_end = tmp - 1;
2466                                 code = 0;
2467                                 return;
2468                         }
2469                         *tmp = '\0';
2470                 }
2471                 tmp++;
2472         }
2473         while (1) {
2474                 while ((c = getchar()) != '\n' && c != EOF)
2475                         /* LOOP */;
2476                 if (c == EOF || getchar() == '\n') {
2477                         fputs("Macro not defined - 4K buffer exceeded.\n",
2478                             ttyout);
2479                         code = -1;
2480                         return;
2481                 }
2482         }
2483 }
2484
2485 /*
2486  * Get size of file on remote machine
2487  */
2488 void
2489 sizecmd(int argc, char *argv[])
2490 {
2491         off_t size;
2492
2493         if (argc == 0 || argc > 2 ||
2494             (argc == 1 && !another(&argc, &argv, "remote-file"))) {
2495                 UPRINTF("usage: %s remote-file\n", argv[0]);
2496                 code = -1;
2497                 return;
2498         }
2499         size = remotesize(argv[1], 1);
2500         if (size != -1)
2501                 fprintf(ttyout,
2502                     "%s\t" LLF "\n", argv[1], (LLT)size);
2503         code = (size > 0);
2504 }
2505
2506 /*
2507  * Get last modification time of file on remote machine
2508  */
2509 void
2510 modtime(int argc, char *argv[])
2511 {
2512         time_t mtime;
2513
2514         if (argc == 0 || argc > 2 ||
2515             (argc == 1 && !another(&argc, &argv, "remote-file"))) {
2516                 UPRINTF("usage: %s remote-file\n", argv[0]);
2517                 code = -1;
2518                 return;
2519         }
2520         mtime = remotemodtime(argv[1], 1);
2521         if (mtime != -1)
2522                 fprintf(ttyout, "%s\t%s", argv[1],
2523                     rfc2822time(localtime(&mtime)));
2524         code = (mtime > 0);
2525 }
2526
2527 /*
2528  * Show status on remote machine
2529  */
2530 void
2531 rmtstatus(int argc, char *argv[])
2532 {
2533
2534         if (argc == 0) {
2535                 UPRINTF("usage: %s [remote-file]\n", argv[0]);
2536                 code = -1;
2537                 return;
2538         }
2539         COMMAND_1ARG(argc, argv, "STAT");
2540 }
2541
2542 /*
2543  * Get file if modtime is more recent than current file
2544  */
2545 void
2546 newer(int argc, char *argv[])
2547 {
2548
2549         if (getit(argc, argv, -1, "w"))
2550                 fprintf(ttyout,
2551                     "Local file \"%s\" is newer than remote file \"%s\".\n",
2552                     argv[2], argv[1]);
2553 }
2554
2555 /*
2556  * Display one local file through $PAGER.
2557  */
2558 void
2559 lpage(int argc, char *argv[])
2560 {
2561         size_t len;
2562         const char *p;
2563         char *pager, *locfile;
2564
2565         if (argc == 0 || argc > 2 ||
2566             (argc == 1 && !another(&argc, &argv, "local-file"))) {
2567                 UPRINTF("usage: %s local-file\n", argv[0]);
2568                 code = -1;
2569                 return;
2570         }
2571         if ((locfile = globulize(argv[1])) == NULL) {
2572                 code = -1;
2573                 return;
2574         }
2575         p = getoptionvalue("pager");
2576         if (EMPTYSTRING(p))
2577                 p = DEFAULTPAGER;
2578         len = strlen(p) + strlen(locfile) + 2;
2579         pager = ftp_malloc(len);
2580         (void)strlcpy(pager, p,         len);
2581         (void)strlcat(pager, " ",       len);
2582         (void)strlcat(pager, locfile,   len);
2583         system(pager);
2584         code = 0;
2585         (void)free(pager);
2586         (void)free(locfile);
2587 }
2588
2589 /*
2590  * Display one remote file through $PAGER.
2591  */
2592 void
2593 page(int argc, char *argv[])
2594 {
2595         int ohash, orestart_point, overbose;
2596         size_t len;
2597         const char *p;
2598         char *pager;
2599
2600         if (argc == 0 || argc > 2 ||
2601             (argc == 1 && !another(&argc, &argv, "remote-file"))) {
2602                 UPRINTF("usage: %s remote-file\n", argv[0]);
2603                 code = -1;
2604                 return;
2605         }
2606         p = getoptionvalue("pager");
2607         if (EMPTYSTRING(p))
2608                 p = DEFAULTPAGER;
2609         len = strlen(p) + 2;
2610         pager = ftp_malloc(len);
2611         pager[0] = '|';
2612         (void)strlcpy(pager + 1, p, len - 1);
2613
2614         ohash = hash;
2615         orestart_point = restart_point;
2616         overbose = verbose;
2617         hash = restart_point = verbose = 0;
2618         recvrequest("RETR", pager, argv[1], "r+", 1, 0);
2619         hash = ohash;
2620         restart_point = orestart_point;
2621         verbose = overbose;
2622         (void)free(pager);
2623 }
2624
2625 /*
2626  * Set the socket send or receive buffer size.
2627  */
2628 void
2629 setxferbuf(int argc, char *argv[])
2630 {
2631         int size, dir;
2632
2633         if (argc != 2) {
2634  usage:
2635                 UPRINTF("usage: %s size\n", argv[0]);
2636                 code = -1;
2637                 return;
2638         }
2639         if (strcasecmp(argv[0], "sndbuf") == 0)
2640                 dir = RATE_PUT;
2641         else if (strcasecmp(argv[0], "rcvbuf") == 0)
2642                 dir = RATE_GET;
2643         else if (strcasecmp(argv[0], "xferbuf") == 0)
2644                 dir = RATE_ALL;
2645         else
2646                 goto usage;
2647
2648         if ((size = strsuftoi(argv[1])) == -1)
2649                 goto usage;
2650
2651         if (size == 0) {
2652                 fprintf(ttyout, "%s: size must be positive.\n", argv[0]);
2653                 goto usage;
2654         }
2655
2656         if (dir & RATE_PUT)
2657                 sndbuf_size = size;
2658         if (dir & RATE_GET)
2659                 rcvbuf_size = size;
2660         fprintf(ttyout, "Socket buffer sizes: send %d, receive %d.\n",
2661             sndbuf_size, rcvbuf_size);
2662         code = 0;
2663 }
2664
2665 /*
2666  * Set or display options (defaults are provided by various env vars)
2667  */
2668 void
2669 setoption(int argc, char *argv[])
2670 {
2671         struct option *o;
2672
2673         code = -1;
2674         if (argc == 0 || (argc != 1 && argc != 3)) {
2675                 UPRINTF("usage: %s [option value]\n", argv[0]);
2676                 return;
2677         }
2678
2679 #define OPTIONINDENT ((int) sizeof("http_proxy"))
2680         if (argc == 1) {
2681                 for (o = optiontab; o->name != NULL; o++) {
2682                         fprintf(ttyout, "%-*s\t%s\n", OPTIONINDENT,
2683                             o->name, o->value ? o->value : "");
2684                 }
2685         } else {
2686                 set_option(argv[1], argv[2], 1);
2687         }
2688         code = 0;
2689 }
2690
2691 void
2692 set_option(const char * option, const char * value, int doverbose)
2693 {
2694         struct option *o;
2695
2696         o = getoption(option);
2697         if (o == NULL) {
2698                 fprintf(ttyout, "No such option `%s'.\n", option);
2699                 return;
2700         }
2701         FREEPTR(o->value);
2702         o->value = ftp_strdup(value);
2703         if (verbose && doverbose)
2704                 fprintf(ttyout, "Setting `%s' to `%s'.\n",
2705                     o->name, o->value);
2706 }
2707
2708 /*
2709  * Unset an option
2710  */
2711 void
2712 unsetoption(int argc, char *argv[])
2713 {
2714         struct option *o;
2715
2716         code = -1;
2717         if (argc == 0 || argc != 2) {
2718                 UPRINTF("usage: %s option\n", argv[0]);
2719                 return;
2720         }
2721
2722         o = getoption(argv[1]);
2723         if (o == NULL) {
2724                 fprintf(ttyout, "No such option `%s'.\n", argv[1]);
2725                 return;
2726         }
2727         FREEPTR(o->value);
2728         fprintf(ttyout, "Unsetting `%s'.\n", o->name);
2729         code = 0;
2730 }
2731
2732 /*
2733  * Display features supported by the remote host.
2734  */
2735 void
2736 feat(int argc, char *argv[])
2737 {
2738         int oldverbose = verbose;
2739
2740         if (argc == 0) {
2741                 UPRINTF("usage: %s\n", argv[0]);
2742                 code = -1;
2743                 return;
2744         }
2745         if (! features[FEAT_FEAT]) {
2746                 fprintf(ttyout,
2747                     "FEAT is not supported by the remote server.\n");
2748                 return;
2749         }
2750         verbose = 1;    /* If we aren't verbose, this doesn't do anything! */
2751         (void)command("FEAT");
2752         verbose = oldverbose;
2753 }
2754
2755 void
2756 mlst(int argc, char *argv[])
2757 {
2758         int oldverbose = verbose;
2759
2760         if (argc < 1 || argc > 2) {
2761                 UPRINTF("usage: %s [remote-path]\n", argv[0]);
2762                 code = -1;
2763                 return;
2764         }
2765         if (! features[FEAT_MLST]) {
2766                 fprintf(ttyout,
2767                     "MLST is not supported by the remote server.\n");
2768                 return;
2769         }
2770         verbose = 1;    /* If we aren't verbose, this doesn't do anything! */
2771         COMMAND_1ARG(argc, argv, "MLST");
2772         verbose = oldverbose;
2773 }
2774
2775 void
2776 opts(int argc, char *argv[])
2777 {
2778         int oldverbose = verbose;
2779
2780         if (argc < 2 || argc > 3) {
2781                 UPRINTF("usage: %s command [options]\n", argv[0]);
2782                 code = -1;
2783                 return;
2784         }
2785         if (! features[FEAT_FEAT]) {
2786                 fprintf(ttyout,
2787                     "OPTS is not supported by the remote server.\n");
2788                 return;
2789         }
2790         verbose = 1;    /* If we aren't verbose, this doesn't do anything! */
2791         if (argc == 2)
2792                 command("OPTS %s", argv[1]);
2793         else
2794                 command("OPTS %s %s", argv[1], argv[2]);
2795         verbose = oldverbose;
2796 }