contrib/tnftp/src/cmds.c

   1 /*      $NetBSD: cmds.c,v 1.17 2010/01/12 06:55:47 lukem Exp $  */
   2 /*      from    NetBSD: cmds.c,v 1.130 2009/07/13 19:05:41 roy Exp      */
   3
   4 /*-
   5  * Copyright (c) 1996-2009 The NetBSD Foundation, Inc.
   6  * All rights reserved.
   7  *
   8  * This code is derived from software contributed to The NetBSD Foundation
   9  * by Luke Mewburn.
  10  *
  11  * This code is derived from software contributed to The NetBSD Foundation
  12  * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
  13  * NASA Ames Research Center.
  14  *
  15  * Redistribution and use in source and binary forms, with or without
  16  * modification, are permitted provided that the following conditions
  17  * are met:
  18  * 1. Redistributions of source code must retain the above copyright
  19  *    notice, this list of conditions and the following disclaimer.
  20  * 2. Redistributions in binary form must reproduce the above copyright
  21  *    notice, this list of conditions and the following disclaimer in the
  22  *    documentation and/or other materials provided with the distribution.
  23  *
  24  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  25  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  26  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  27  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  28  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  29  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  30  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  31  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  32  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  33  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  34  * POSSIBILITY OF SUCH DAMAGE.
  35  */
  36
  37 /*
  38  * Copyright (c) 1985, 1989, 1993, 1994
  39  *      The Regents of the University of California.  All rights reserved.
  40  *
  41  * Redistribution and use in source and binary forms, with or without
  42  * modification, are permitted provided that the following conditions
  43  * are met:
  44  * 1. Redistributions of source code must retain the above copyright
  45  *    notice, this list of conditions and the following disclaimer.
  46  * 2. Redistributions in binary form must reproduce the above copyright
  47  *    notice, this list of conditions and the following disclaimer in the
  48  *    documentation and/or other materials provided with the distribution.
  49  * 3. Neither the name of the University nor the names of its contributors
  50  *    may be used to endorse or promote products derived from this software
  51  *    without specific prior written permission.
  52  *
  53  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  54  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  55  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  56  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  57  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  58  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  59  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  60  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  61  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  62  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  63  * SUCH DAMAGE.
  64  */
  65
  66 /*
  67  * Copyright (C) 1997 and 1998 WIDE Project.
  68  * All rights reserved.
  69  *
  70  * Redistribution and use in source and binary forms, with or without
  71  * modification, are permitted provided that the following conditions
  72  * are met:
  73  * 1. Redistributions of source code must retain the above copyright
  74  *    notice, this list of conditions and the following disclaimer.
  75  * 2. Redistributions in binary form must reproduce the above copyright
  76  *    notice, this list of conditions and the following disclaimer in the
  77  *    documentation and/or other materials provided with the distribution.
  78  * 3. Neither the name of the project nor the names of its contributors
  79  *    may be used to endorse or promote products derived from this software
  80  *    without specific prior written permission.
  81  *
  82  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
  83  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  84  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  85  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
  86  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  87  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  88  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  89  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  90  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  91  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  92  * SUCH DAMAGE.
  93  */
  94
  95 #include "tnftp.h"
  96
  97 #if 0   /* tnftp */
  98
  99 #include <sys/cdefs.h>
 100 #ifndef lint
 101 #if 0
 102 static char sccsid[] = "@(#)cmds.c      8.6 (Berkeley) 10/9/94";
 103 #else
 104 __RCSID(" NetBSD: cmds.c,v 1.130 2009/07/13 19:05:41 roy Exp  ");
 105 #endif
 106 #endif /* not lint */
 107
 108 /*
 109  * FTP User Program -- Command Routines.
 110  */
 111 #include <sys/types.h>
 112 #include <sys/socket.h>
 113 #include <sys/stat.h>
 114 #include <sys/wait.h>
 115 #include <arpa/ftp.h>
 116
 117 #include <ctype.h>
 118 #include <err.h>
 119 #include <glob.h>
 120 #include <limits.h>
 121 #include <netdb.h>
 122 #include <paths.h>
 123 #include <stddef.h>
 124 #include <stdio.h>
 125 #include <stdlib.h>
 126 #include <string.h>
 127 #include <time.h>
 128 #include <unistd.h>
 129
 130 #endif  /* tnftp */
 131
 132 #include "ftp_var.h"
 133 #include "version.h"
 134
 135 static struct types {
 136         const char      *t_name;
 137         const char      *t_mode;
 138         int             t_type;
 139         const char      *t_arg;
 140 } types[] = {
 141         { "ascii",      "A",    TYPE_A, 0 },
 142         { "binary",     "I",    TYPE_I, 0 },
 143         { "image",      "I",    TYPE_I, 0 },
 144         { "ebcdic",     "E",    TYPE_E, 0 },
 145         { "tenex",      "L",    TYPE_L, bytename },
 146         { NULL,         NULL,   0, NULL }
 147 };
 148
 149 static sigjmp_buf        jabort;
 150
 151 static int      confirm(const char *, const char *);
 152 static void     mintr(int);
 153 static void     mabort(const char *);
 154 static void     set_type(const char *);
 155
 156 static const char *doprocess(char *, size_t, const char *, int, int, int);
 157 static const char *domap(char *, size_t, const char *);
 158 static const char *docase(char *, size_t, const char *);
 159 static const char *dotrans(char *, size_t, const char *);
 160
 161 /*
 162  * Confirm if "cmd" is to be performed upon "file".
 163  * If "file" is NULL, generate a "Continue with" prompt instead.
 164  */
 165 static int
 166 confirm(const char *cmd, const char *file)
 167 {
 168         const char *errormsg;
 169         char cline[BUFSIZ];
 170         const char *promptleft, *promptright;
 171
 172         if (!interactive || confirmrest)
 173                 return (1);
 174         if (file == NULL) {
 175                 promptleft = "Continue with";
 176                 promptright = cmd;
 177         } else {
 178                 promptleft = cmd;
 179                 promptright = file;
 180         }
 181         while (1) {
 182                 fprintf(ttyout, "%s %s [anpqy?]? ", promptleft, promptright);
 183                 (void)fflush(ttyout);
 184                 if (get_line(stdin, cline, sizeof(cline), &errormsg) < 0) {
 185                         mflag = 0;
 186                         fprintf(ttyout, "%s; %s aborted\n", errormsg, cmd);
 187                         return (0);
 188                 }
 189                 switch (tolower((unsigned char)*cline)) {
 190                         case 'a':
 191                                 confirmrest = 1;
 192                                 fprintf(ttyout,
 193                                     "Prompting off for duration of %s.\n", cmd);
 194                                 break;
 195                         case 'p':
 196                                 interactive = 0;
 197                                 fputs("Interactive mode: off.\n", ttyout);
 198                                 break;
 199                         case 'q':
 200                                 mflag = 0;
 201                                 fprintf(ttyout, "%s aborted.\n", cmd);
 202                                 /* FALLTHROUGH */
 203                         case 'n':
 204                                 return (0);
 205                         case '?':
 206                                 fprintf(ttyout,
 207                                     "  confirmation options:\n"
 208                                     "\ta  answer `yes' for the duration of %s\n"
 209                                     "\tn  answer `no' for this file\n"
 210                                     "\tp  turn off `prompt' mode\n"
 211                                     "\tq  stop the current %s\n"
 212                                     "\ty  answer `yes' for this file\n"
 213                                     "\t?  this help list\n",
 214                                     cmd, cmd);
 215                                 continue;       /* back to while(1) */
 216                 }
 217                 return (1);
 218         }
 219         /* NOTREACHED */
 220 }
 221
 222 /*
 223  * Set transfer type.
 224  */
 225 void
 226 settype(int argc, char *argv[])
 227 {
 228         struct types *p;
 229
 230         if (argc == 0 || argc > 2) {
 231                 const char *sep;
 232
 233                 UPRINTF("usage: %s [", argv[0]);
 234                 sep = " ";
 235                 for (p = types; p->t_name; p++) {
 236                         fprintf(ttyout, "%s%s", sep, p->t_name);
 237                         sep = " | ";
 238                 }
 239                 fputs(" ]\n", ttyout);
 240                 code = -1;
 241                 return;
 242         }
 243         if (argc < 2) {
 244                 fprintf(ttyout, "Using %s mode to transfer files.\n", typename);
 245                 code = 0;
 246                 return;
 247         }
 248         set_type(argv[1]);
 249 }
 250
 251 void
 252 set_type(const char *ttype)
 253 {
 254         struct types *p;
 255         int comret;
 256
 257         for (p = types; p->t_name; p++)
 258                 if (strcmp(ttype, p->t_name) == 0)
 259                         break;
 260         if (p->t_name == 0) {
 261                 fprintf(ttyout, "%s: unknown mode.\n", ttype);
 262                 code = -1;
 263                 return;
 264         }
 265         if ((p->t_arg != NULL) && (*(p->t_arg) != '\0'))
 266                 comret = command("TYPE %s %s", p->t_mode, p->t_arg);
 267         else
 268                 comret = command("TYPE %s", p->t_mode);
 269         if (comret == COMPLETE) {
 270                 (void)strlcpy(typename, p->t_name, sizeof(typename));
 271                 curtype = type = p->t_type;
 272         }
 273 }
 274
 275 /*
 276  * Internal form of settype; changes current type in use with server
 277  * without changing our notion of the type for data transfers.
 278  * Used to change to and from ascii for listings.
 279  */
 280 void
 281 changetype(int newtype, int show)
 282 {
 283         struct types *p;
 284         int comret, oldverbose = verbose;
 285
 286         if (newtype == 0)
 287                 newtype = TYPE_I;
 288         if (newtype == curtype)
 289                 return;
 290         if (ftp_debug == 0 && show == 0)
 291                 verbose = 0;
 292         for (p = types; p->t_name; p++)
 293                 if (newtype == p->t_type)
 294                         break;
 295         if (p->t_name == 0) {
 296                 errx(1, "changetype: unknown type %d", newtype);
 297         }
 298         if (newtype == TYPE_L && bytename[0] != '\0')
 299                 comret = command("TYPE %s %s", p->t_mode, bytename);
 300         else
 301                 comret = command("TYPE %s", p->t_mode);
 302         if (comret == COMPLETE)
 303                 curtype = newtype;
 304         verbose = oldverbose;
 305 }
 306
 307 /*
 308  * Set binary transfer type.
 309  */
 310 /*VARARGS*/
 311 void
 312 setbinary(int argc, char *argv[])
 313 {
 314
 315         if (argc == 0) {
 316                 UPRINTF("usage: %s\n", argv[0]);
 317                 code = -1;
 318                 return;
 319         }
 320         set_type("binary");
 321 }
 322
 323 /*
 324  * Set ascii transfer type.
 325  */
 326 /*VARARGS*/
 327 void
 328 setascii(int argc, char *argv[])
 329 {
 330
 331         if (argc == 0) {
 332                 UPRINTF("usage: %s\n", argv[0]);
 333                 code = -1;
 334                 return;
 335         }
 336         set_type("ascii");
 337 }
 338
 339 /*
 340  * Set tenex transfer type.
 341  */
 342 /*VARARGS*/
 343 void
 344 settenex(int argc, char *argv[])
 345 {
 346
 347         if (argc == 0) {
 348                 UPRINTF("usage: %s\n", argv[0]);
 349                 code = -1;
 350                 return;
 351         }
 352         set_type("tenex");
 353 }
 354
 355 /*
 356  * Set file transfer mode.
 357  */
 358 /*ARGSUSED*/
 359 void
 360 setftmode(int argc, char *argv[])
 361 {
 362
 363         if (argc != 2) {
 364                 UPRINTF("usage: %s mode-name\n", argv[0]);
 365                 code = -1;
 366                 return;
 367         }
 368         fprintf(ttyout, "We only support %s mode, sorry.\n", modename);
 369         code = -1;
 370 }
 371
 372 /*
 373  * Set file transfer format.
 374  */
 375 /*ARGSUSED*/
 376 void
 377 setform(int argc, char *argv[])
 378 {
 379
 380         if (argc != 2) {
 381                 UPRINTF("usage: %s format\n", argv[0]);
 382                 code = -1;
 383                 return;
 384         }
 385         fprintf(ttyout, "We only support %s format, sorry.\n", formname);
 386         code = -1;
 387 }
 388
 389 /*
 390  * Set file transfer structure.
 391  */
 392 /*ARGSUSED*/
 393 void
 394 setstruct(int argc, char *argv[])
 395 {
 396
 397         if (argc != 2) {
 398                 UPRINTF("usage: %s struct-mode\n", argv[0]);
 399                 code = -1;
 400                 return;
 401         }
 402         fprintf(ttyout, "We only support %s structure, sorry.\n", structname);
 403         code = -1;
 404 }
 405
 406 /*
 407  * Send a single file.
 408  */
 409 void
 410 put(int argc, char *argv[])
 411 {
 412         char buf[MAXPATHLEN];
 413         const char *cmd;
 414         int loc = 0;
 415         char *locfile;
 416         const char *remfile;
 417
 418         if (argc == 2) {
 419                 argc++;
 420                 argv[2] = argv[1];
 421                 loc++;
 422         }
 423         if (argc == 0 || (argc == 1 && !another(&argc, &argv, "local-file")))
 424                 goto usage;
 425         if ((argc < 3 && !another(&argc, &argv, "remote-file")) || argc > 3) {
 426  usage:
 427                 UPRINTF("usage: %s local-file [remote-file]\n", argv[0]);
 428                 code = -1;
 429                 return;
 430         }
 431         if ((locfile = globulize(argv[1])) == NULL) {
 432                 code = -1;
 433                 return;
 434         }
 435         remfile = argv[2];
 436         if (loc)        /* If argv[2] is a copy of the old argv[1], update it */
 437                 remfile = locfile;
 438         cmd = (argv[0][0] == 'a') ? "APPE" : ((sunique) ? "STOU" : "STOR");
 439         remfile = doprocess(buf, sizeof(buf), remfile,
 440                 0, loc && ntflag, loc && mapflag);
 441         sendrequest(cmd, locfile, remfile,
 442             locfile != argv[1] || remfile != argv[2]);
 443         free(locfile);
 444 }
 445
 446 static const char *
 447 doprocess(char *dst, size_t dlen, const char *src,
 448     int casef, int transf, int mapf)
 449 {
 450         if (casef)
 451                 src = docase(dst, dlen, src);
 452         if (transf)
 453                 src = dotrans(dst, dlen, src);
 454         if (mapf)
 455                 src = domap(dst, dlen, src);
 456         return src;
 457 }
 458
 459 /*
 460  * Send multiple files.
 461  */
 462 void
 463 mput(int argc, char *argv[])
 464 {
 465         int i;
 466         sigfunc oldintr;
 467         int ointer;
 468         const char *tp;
 469
 470         if (argc == 0 || (argc == 1 && !another(&argc, &argv, "local-files"))) {
 471                 UPRINTF("usage: %s local-files\n", argv[0]);
 472                 code = -1;
 473                 return;
 474         }
 475         mflag = 1;
 476         oldintr = xsignal(SIGINT, mintr);
 477         if (sigsetjmp(jabort, 1))
 478                 mabort(argv[0]);
 479         if (proxy) {
 480                 char *cp;
 481
 482                 while ((cp = remglob(argv, 0, NULL)) != NULL) {
 483                         if (*cp == '\0' || !connected) {
 484                                 mflag = 0;
 485                                 continue;
 486                         }
 487                         if (mflag && confirm(argv[0], cp)) {
 488                                 char buf[MAXPATHLEN];
 489                                 tp = doprocess(buf, sizeof(buf), cp,
 490                                     mcase, ntflag, mapflag);
 491                                 sendrequest((sunique) ? "STOU" : "STOR",
 492                                     cp, tp, cp != tp || !interactive);
 493                                 if (!mflag && fromatty) {
 494                                         ointer = interactive;
 495                                         interactive = 1;
 496                                         if (confirm(argv[0], NULL)) {
 497                                                 mflag++;
 498                                         }
 499                                         interactive = ointer;
 500                                 }
 501                         }
 502                 }
 503                 goto cleanupmput;
 504         }
 505         for (i = 1; i < argc && connected; i++) {
 506                 char **cpp;
 507                 glob_t gl;
 508                 int flags;
 509
 510                 if (!doglob) {
 511                         if (mflag && confirm(argv[0], argv[i])) {
 512                                 char buf[MAXPATHLEN];
 513                                 tp = doprocess(buf, sizeof(buf), argv[i],
 514                                         0, ntflag, mapflag);
 515                                 sendrequest((sunique) ? "STOU" : "STOR",
 516                                     argv[i], tp, tp != argv[i] || !interactive);
 517                                 if (!mflag && fromatty) {
 518                                         ointer = interactive;
 519                                         interactive = 1;
 520                                         if (confirm(argv[0], NULL)) {
 521                                                 mflag++;
 522                                         }
 523                                         interactive = ointer;
 524                                 }
 525                         }
 526                         continue;
 527                 }
 528
 529                 memset(&gl, 0, sizeof(gl));
 530                 flags = GLOB_BRACE|GLOB_NOCHECK|GLOB_TILDE;
 531                 if (glob(argv[i], flags, NULL, &gl) || gl.gl_pathc == 0) {
 532                         warnx("Glob pattern `%s' not found", argv[i]);
 533                         globfree(&gl);
 534                         continue;
 535                 }
 536                 for (cpp = gl.gl_pathv; cpp && *cpp != NULL && connected;
 537                     cpp++) {
 538                         if (mflag && confirm(argv[0], *cpp)) {
 539                                 char buf[MAXPATHLEN];
 540                                 tp = *cpp;
 541                                 tp = doprocess(buf, sizeof(buf), *cpp,
 542                                     0, ntflag, mapflag);
 543                                 sendrequest((sunique) ? "STOU" : "STOR",
 544                                     *cpp, tp, *cpp != tp || !interactive);
 545                                 if (!mflag && fromatty) {
 546                                         ointer = interactive;
 547                                         interactive = 1;
 548                                         if (confirm(argv[0], NULL)) {
 549                                                 mflag++;
 550                                         }
 551                                         interactive = ointer;
 552                                 }
 553                         }
 554                 }
 555                 globfree(&gl);
 556         }
 557  cleanupmput:
 558         (void)xsignal(SIGINT, oldintr);
 559         mflag = 0;
 560 }
 561
 562 void
 563 reget(int argc, char *argv[])
 564 {
 565
 566         (void)getit(argc, argv, 1, "r+");
 567 }
 568
 569 void
 570 get(int argc, char *argv[])
 571 {
 572
 573         (void)getit(argc, argv, 0, restart_point ? "r+" : "w" );
 574 }
 575
 576 /*
 577  * Receive one file.
 578  * If restartit is  1, restart the xfer always.
 579  * If restartit is -1, restart the xfer only if the remote file is newer.
 580  */
 581 int
 582 getit(int argc, char *argv[], int restartit, const char *gmode)
 583 {
 584         int     loc, rval;
 585         char    *remfile, *olocfile;
 586         const char *locfile;
 587         char    buf[MAXPATHLEN];
 588
 589         loc = rval = 0;
 590         if (argc == 2) {
 591                 argc++;
 592                 argv[2] = argv[1];
 593                 loc++;
 594         }
 595         if (argc == 0 || (argc == 1 && !another(&argc, &argv, "remote-file")))
 596                 goto usage;
 597         if ((argc < 3 && !another(&argc, &argv, "local-file")) || argc > 3) {
 598  usage:
 599                 UPRINTF("usage: %s remote-file [local-file]\n", argv[0]);
 600                 code = -1;
 601                 return (0);
 602         }
 603         remfile = argv[1];
 604         if ((olocfile = globulize(argv[2])) == NULL) {
 605                 code = -1;
 606                 return (0);
 607         }
 608         locfile = doprocess(buf, sizeof(buf), olocfile,
 609                 loc && mcase, loc && ntflag, loc && mapflag);
 610         if (restartit) {
 611                 struct stat stbuf;
 612                 int ret;
 613
 614                 if (! features[FEAT_REST_STREAM]) {
 615                         fprintf(ttyout,
 616                             "Restart is not supported by the remote server.\n");
 617                         return (0);
 618                 }
 619                 ret = stat(locfile, &stbuf);
 620                 if (restartit == 1) {
 621                         if (ret < 0) {
 622                                 warn("Can't stat `%s'", locfile);
 623                                 goto freegetit;
 624                         }
 625                         restart_point = stbuf.st_size;
 626                 } else {
 627                         if (ret == 0) {
 628                                 time_t mtime;
 629
 630                                 mtime = remotemodtime(argv[1], 0);
 631                                 if (mtime == -1)
 632                                         goto freegetit;
 633                                 if (stbuf.st_mtime >= mtime) {
 634                                         rval = 1;
 635                                         goto freegetit;
 636                                 }
 637                         }
 638                 }
 639         }
 640
 641         recvrequest("RETR", locfile, remfile, gmode,
 642             remfile != argv[1] || locfile != argv[2], loc);
 643         restart_point = 0;
 644  freegetit:
 645         (void)free(olocfile);
 646         return (rval);
 647 }
 648
 649 /* ARGSUSED */
 650 static void
 651 mintr(int signo)
 652 {
 653
 654         alarmtimer(0);
 655         if (fromatty)
 656                 write(fileno(ttyout), "\n", 1);
 657         siglongjmp(jabort, 1);
 658 }
 659
 660 static void
 661 mabort(const char *cmd)
 662 {
 663         int ointer, oconf;
 664
 665         if (mflag && fromatty) {
 666                 ointer = interactive;
 667                 oconf = confirmrest;
 668                 interactive = 1;
 669                 confirmrest = 0;
 670                 if (confirm(cmd, NULL)) {
 671                         interactive = ointer;
 672                         confirmrest = oconf;
 673                         return;
 674                 }
 675                 interactive = ointer;
 676                 confirmrest = oconf;
 677         }
 678         mflag = 0;
 679 }
 680
 681 /*
 682  * Get multiple files.
 683  */
 684 void
 685 mget(int argc, char *argv[])
 686 {
 687         sigfunc oldintr;
 688         int ointer;
 689         char *cp;
 690         const char *tp;
 691         int volatile restartit;
 692
 693         if (argc == 0 ||
 694             (argc == 1 && !another(&argc, &argv, "remote-files"))) {
 695                 UPRINTF("usage: %s remote-files\n", argv[0]);
 696                 code = -1;
 697                 return;
 698         }
 699         mflag = 1;
 700         restart_point = 0;
 701         restartit = 0;
 702         if (strcmp(argv[0], "mreget") == 0) {
 703                 if (! features[FEAT_REST_STREAM]) {
 704                         fprintf(ttyout,
 705                     "Restart is not supported by the remote server.\n");
 706                         return;
 707                 }
 708                 restartit = 1;
 709         }
 710         oldintr = xsignal(SIGINT, mintr);
 711         if (sigsetjmp(jabort, 1))
 712                 mabort(argv[0]);
 713         while ((cp = remglob(argv, proxy, NULL)) != NULL) {
 714                 char buf[MAXPATHLEN];
 715                 if (*cp == '\0' || !connected) {
 716                         mflag = 0;
 717                         continue;
 718                 }
 719                 if (! mflag)
 720                         continue;
 721                 if (! fileindir(cp, localcwd)) {
 722                         fprintf(ttyout, "Skipping non-relative filename `%s'\n",
 723                             cp);
 724                         continue;
 725                 }
 726                 if (!confirm(argv[0], cp))
 727                         continue;
 728                 tp = doprocess(buf, sizeof(buf), cp, mcase, ntflag, mapflag);
 729                 if (restartit) {
 730                         struct stat stbuf;
 731
 732                         if (stat(tp, &stbuf) == 0)
 733                                 restart_point = stbuf.st_size;
 734                         else
 735                                 warn("Can't stat `%s'", tp);
 736                 }
 737                 recvrequest("RETR", tp, cp, restart_point ? "r+" : "w",
 738                     tp != cp || !interactive, 1);
 739                 restart_point = 0;
 740                 if (!mflag && fromatty) {
 741                         ointer = interactive;
 742                         interactive = 1;
 743                         if (confirm(argv[0], NULL))
 744                                 mflag++;
 745                         interactive = ointer;
 746                 }
 747         }
 748         (void)xsignal(SIGINT, oldintr);
 749         mflag = 0;
 750 }
 751
 752 /*
 753  * Read list of filenames from a local file and get those
 754  */
 755 void
 756 fget(int argc, char *argv[])
 757 {
 758         const char *gmode;
 759         FILE    *fp;
 760         char    buf[MAXPATHLEN], cmdbuf[MAX_C_NAME];
 761
 762         if (argc != 2) {
 763                 UPRINTF("usage: %s localfile\n", argv[0]);
 764                 code = -1;
 765                 return;
 766         }
 767
 768         fp = fopen(argv[1], "r");
 769         if (fp == NULL) {
 770                 fprintf(ttyout, "Can't open source file %s\n", argv[1]);
 771                 code = -1;
 772                 return;
 773         }
 774
 775         (void)strlcpy(cmdbuf, "get", sizeof(cmdbuf));
 776         argv[0] = cmdbuf;
 777         gmode = restart_point ? "r+" : "w";
 778
 779         while (get_line(fp, buf, sizeof(buf), NULL) >= 0) {
 780                 if (buf[0] == '\0')
 781                         continue;
 782                 argv[1] = buf;
 783                 (void)getit(argc, argv, 0, gmode);
 784         }
 785         fclose(fp);
 786 }
 787
 788 const char *
 789 onoff(int val)
 790 {
 791
 792         return (val ? "on" : "off");
 793 }
 794
 795 /*
 796  * Show status.
 797  */
 798 /*ARGSUSED*/
 799 void
 800 status(int argc, char *argv[])
 801 {
 802
 803         if (argc == 0) {
 804                 UPRINTF("usage: %s\n", argv[0]);
 805                 code = -1;
 806                 return;
 807         }
 808 #ifndef NO_STATUS
 809         if (connected)
 810                 fprintf(ttyout, "Connected %sto %s.\n",
 811                     connected == -1 ? "and logged in" : "", hostname);
 812         else
 813                 fputs("Not connected.\n", ttyout);
 814         if (!proxy) {
 815                 pswitch(1);
 816                 if (connected) {
 817                         fprintf(ttyout, "Connected for proxy commands to %s.\n",
 818                             hostname);
 819                 }
 820                 else {
 821                         fputs("No proxy connection.\n", ttyout);
 822                 }
 823                 pswitch(0);
 824         }
 825         fprintf(ttyout, "Gate ftp: %s, server %s, port %s.\n", onoff(gatemode),
 826             *gateserver ? gateserver : "(none)", gateport);
 827         fprintf(ttyout, "Passive mode: %s; fallback to active mode: %s.\n",
 828             onoff(passivemode), onoff(activefallback));
 829         fprintf(ttyout, "Mode: %s; Type: %s; Form: %s; Structure: %s.\n",
 830             modename, typename, formname, structname);
 831         fprintf(ttyout, "Verbose: %s; Bell: %s; Prompting: %s; Globbing: %s.\n",
 832             onoff(verbose), onoff(bell), onoff(interactive), onoff(doglob));
 833         fprintf(ttyout, "Store unique: %s; Receive unique: %s.\n",
 834             onoff(sunique), onoff(runique));
 835         fprintf(ttyout, "Preserve modification times: %s.\n", onoff(preserve));
 836         fprintf(ttyout, "Case: %s; CR stripping: %s.\n", onoff(mcase),
 837             onoff(crflag));
 838         if (ntflag) {
 839                 fprintf(ttyout, "Ntrans: (in) %s (out) %s\n", ntin, ntout);
 840         }
 841         else {
 842                 fputs("Ntrans: off.\n", ttyout);
 843         }
 844         if (mapflag) {
 845                 fprintf(ttyout, "Nmap: (in) %s (out) %s\n", mapin, mapout);
 846         }
 847         else {
 848                 fputs("Nmap: off.\n", ttyout);
 849         }
 850         fprintf(ttyout,
 851             "Hash mark printing: %s; Mark count: %d; Progress bar: %s.\n",
 852             onoff(hash), mark, onoff(progress));
 853         fprintf(ttyout,
 854             "Get transfer rate throttle: %s; maximum: %d; increment %d.\n",
 855             onoff(rate_get), rate_get, rate_get_incr);
 856         fprintf(ttyout,
 857             "Put transfer rate throttle: %s; maximum: %d; increment %d.\n",
 858             onoff(rate_put), rate_put, rate_put_incr);
 859         fprintf(ttyout,
 860             "Socket buffer sizes: send %d, receive %d.\n",
 861             sndbuf_size, rcvbuf_size);
 862         fprintf(ttyout, "Use of PORT cmds: %s.\n", onoff(sendport));
 863         fprintf(ttyout, "Use of EPSV/EPRT cmds for IPv4: %s%s.\n", onoff(epsv4),
 864             epsv4bad ? " (disabled for this connection)" : "");
 865         fprintf(ttyout, "Use of EPSV/EPRT cmds for IPv6: %s%s.\n", onoff(epsv6),
 866             epsv6bad ? " (disabled for this connection)" : "");
 867         fprintf(ttyout, "Command line editing: %s.\n",
 868 #ifdef NO_EDITCOMPLETE
 869             "support not compiled in"
 870 #else   /* !def NO_EDITCOMPLETE */
 871             onoff(editing)
 872 #endif  /* !def NO_EDITCOMPLETE */
 873             );
 874         if (macnum > 0) {
 875                 int i;
 876
 877                 fputs("Macros:\n", ttyout);
 878                 for (i=0; i<macnum; i++) {
 879                         fprintf(ttyout, "\t%s\n", macros[i].mac_name);
 880                 }
 881         }
 882 #endif /* !def NO_STATUS */
 883         fprintf(ttyout, "Version: %s %s\n", FTP_PRODUCT, FTP_VERSION);
 884         code = 0;
 885 }
 886
 887 /*
 888  * Toggle a variable
 889  */
 890 int
 891 togglevar(int argc, char *argv[], int *var, const char *mesg)
 892 {
 893         if (argc == 1) {
 894                 *var = !*var;
 895         } else if (argc == 2 && strcasecmp(argv[1], "on") == 0) {
 896                 *var = 1;
 897         } else if (argc == 2 && strcasecmp(argv[1], "off") == 0) {
 898                 *var = 0;
 899         } else {
 900                 UPRINTF("usage: %s [ on | off ]\n", argv[0]);
 901                 return (-1);
 902         }
 903         if (mesg)
 904                 fprintf(ttyout, "%s %s.\n", mesg, onoff(*var));
 905         return (*var);
 906 }
 907
 908 /*
 909  * Set beep on cmd completed mode.
 910  */
 911 /*VARARGS*/
 912 void
 913 setbell(int argc, char *argv[])
 914 {
 915
 916         code = togglevar(argc, argv, &bell, "Bell mode");
 917 }
 918
 919 /*
 920  * Set command line editing
 921  */
 922 /*VARARGS*/
 923 void
 924 setedit(int argc, char *argv[])
 925 {
 926
 927 #ifdef NO_EDITCOMPLETE
 928         if (argc == 0) {
 929                 UPRINTF("usage: %s\n", argv[0]);
 930                 code = -1;
 931                 return;
 932         }
 933         if (verbose)
 934                 fputs("Editing support not compiled in; ignoring command.\n",
 935                     ttyout);
 936 #else   /* !def NO_EDITCOMPLETE */
 937         code = togglevar(argc, argv, &editing, "Editing mode");
 938         controlediting();
 939 #endif  /* !def NO_EDITCOMPLETE */
 940 }
 941
 942 /*
 943  * Turn on packet tracing.
 944  */
 945 /*VARARGS*/
 946 void
 947 settrace(int argc, char *argv[])
 948 {
 949
 950         code = togglevar(argc, argv, &trace, "Packet tracing");
 951 }
 952
 953 /*
 954  * Toggle hash mark printing during transfers, or set hash mark bytecount.
 955  */
 956 /*VARARGS*/
 957 void
 958 sethash(int argc, char *argv[])
 959 {
 960         if (argc == 1)
 961                 hash = !hash;
 962         else if (argc != 2) {
 963                 UPRINTF("usage: %s [ on | off | bytecount ]\n",
 964                     argv[0]);
 965                 code = -1;
 966                 return;
 967         } else if (strcasecmp(argv[1], "on") == 0)
 968                 hash = 1;
 969         else if (strcasecmp(argv[1], "off") == 0)
 970                 hash = 0;
 971         else {
 972                 int nmark;
 973
 974                 nmark = strsuftoi(argv[1]);
 975                 if (nmark < 1) {
 976                         fprintf(ttyout, "mark: bad bytecount value `%s'.\n",
 977                             argv[1]);
 978                         code = -1;
 979                         return;
 980                 }
 981                 mark = nmark;
 982                 hash = 1;
 983         }
 984         fprintf(ttyout, "Hash mark printing %s", onoff(hash));
 985         if (hash)
 986                 fprintf(ttyout, " (%d bytes/hash mark)", mark);
 987         fputs(".\n", ttyout);
 988         if (hash)
 989                 progress = 0;
 990         code = hash;
 991 }
 992
 993 /*
 994  * Turn on printing of server echo's.
 995  */
 996 /*VARARGS*/
 997 void
 998 setverbose(int argc, char *argv[])
 999 {
1000
1001         code = togglevar(argc, argv, &verbose, "Verbose mode");
1002 }
1003
1004 /*
1005  * Toggle PORT/LPRT cmd use before each data connection.
1006  */
1007 /*VARARGS*/
1008 void
1009 setport(int argc, char *argv[])
1010 {
1011
1012         code = togglevar(argc, argv, &sendport, "Use of PORT/LPRT cmds");
1013 }
1014
1015 /*
1016  * Toggle transfer progress bar.
1017  */
1018 /*VARARGS*/
1019 void
1020 setprogress(int argc, char *argv[])
1021 {
1022
1023         code = togglevar(argc, argv, &progress, "Progress bar");
1024         if (progress)
1025                 hash = 0;
1026 }
1027
1028 /*
1029  * Turn on interactive prompting during mget, mput, and mdelete.
1030  */
1031 /*VARARGS*/
1032 void
1033 setprompt(int argc, char *argv[])
1034 {
1035
1036         code = togglevar(argc, argv, &interactive, "Interactive mode");
1037 }
1038
1039 /*
1040  * Toggle gate-ftp mode, or set gate-ftp server
1041  */
1042 /*VARARGS*/
1043 void
1044 setgate(int argc, char *argv[])
1045 {
1046         static char gsbuf[MAXHOSTNAMELEN];
1047
1048         if (argc == 0 || argc > 3) {
1049                 UPRINTF(
1050                     "usage: %s [ on | off | gateserver [port] ]\n", argv[0]);
1051                 code = -1;
1052                 return;
1053         } else if (argc < 2) {
1054                 gatemode = !gatemode;
1055         } else {
1056                 if (argc == 2 && strcasecmp(argv[1], "on") == 0)
1057                         gatemode = 1;
1058                 else if (argc == 2 && strcasecmp(argv[1], "off") == 0)
1059                         gatemode = 0;
1060                 else {
1061                         if (argc == 3)
1062                                 gateport = ftp_strdup(argv[2]);
1063                         (void)strlcpy(gsbuf, argv[1], sizeof(gsbuf));
1064                         gateserver = gsbuf;
1065                         gatemode = 1;
1066                 }
1067         }
1068         if (gatemode && (gateserver == NULL || *gateserver == '\0')) {
1069                 fprintf(ttyout,
1070                     "Disabling gate-ftp mode - no gate-ftp server defined.\n");
1071                 gatemode = 0;
1072         } else {
1073                 fprintf(ttyout, "Gate ftp: %s, server %s, port %s.\n",
1074                     onoff(gatemode), *gateserver ? gateserver : "(none)",
1075                     gateport);
1076         }
1077         code = gatemode;
1078 }
1079
1080 /*
1081  * Toggle metacharacter interpretation on local file names.
1082  */
1083 /*VARARGS*/
1084 void
1085 setglob(int argc, char *argv[])
1086 {
1087
1088         code = togglevar(argc, argv, &doglob, "Globbing");
1089 }
1090
1091 /*
1092  * Toggle preserving modification times on retrieved files.
1093  */
1094 /*VARARGS*/
1095 void
1096 setpreserve(int argc, char *argv[])
1097 {
1098
1099         code = togglevar(argc, argv, &preserve, "Preserve modification times");
1100 }
1101
1102 /*
1103  * Set debugging mode on/off and/or set level of debugging.
1104  */
1105 /*VARARGS*/
1106 void
1107 setdebug(int argc, char *argv[])
1108 {
1109         if (argc == 0 || argc > 2) {
1110                 UPRINTF("usage: %s [ on | off | debuglevel ]\n", argv[0]);
1111                 code = -1;
1112                 return;
1113         } else if (argc == 2) {
1114                 if (strcasecmp(argv[1], "on") == 0)
1115                         ftp_debug = 1;
1116                 else if (strcasecmp(argv[1], "off") == 0)
1117                         ftp_debug = 0;
1118                 else {
1119                         int val;
1120
1121                         val = strsuftoi(argv[1]);
1122                         if (val < 0) {
1123                                 fprintf(ttyout, "%s: bad debugging value.\n",
1124                                     argv[1]);
1125                                 code = -1;
1126                                 return;
1127                         }
1128                         ftp_debug = val;
1129                 }
1130         } else
1131                 ftp_debug = !ftp_debug;
1132         if (ftp_debug)
1133                 options |= SO_DEBUG;
1134         else
1135                 options &= ~SO_DEBUG;
1136         fprintf(ttyout, "Debugging %s (ftp_debug=%d).\n", onoff(ftp_debug), ftp_debug);
1137         code = ftp_debug > 0;
1138 }
1139
1140 /*
1141  * Set current working directory on remote machine.
1142  */
1143 void
1144 cd(int argc, char *argv[])
1145 {
1146         int r;
1147
1148         if (argc == 0 || argc > 2 ||
1149             (argc == 1 && !another(&argc, &argv, "remote-directory"))) {
1150                 UPRINTF("usage: %s remote-directory\n", argv[0]);
1151                 code = -1;
1152                 return;
1153         }
1154         r = command("CWD %s", argv[1]);
1155         if (r == ERROR && code == 500) {
1156                 if (verbose)
1157                         fputs("CWD command not recognized, trying XCWD.\n",
1158                             ttyout);
1159                 r = command("XCWD %s", argv[1]);
1160         }
1161         if (r == COMPLETE) {
1162                 dirchange = 1;
1163                 updateremotecwd();
1164         }
1165 }
1166
1167 /*
1168  * Set current working directory on local machine.
1169  */
1170 void
1171 lcd(int argc, char *argv[])
1172 {
1173         char *locdir;
1174
1175         code = -1;
1176         if (argc == 1) {
1177                 argc++;
1178                 argv[1] = localhome;
1179         }
1180         if (argc != 2) {
1181                 UPRINTF("usage: %s [local-directory]\n", argv[0]);
1182                 return;
1183         }
1184         if ((locdir = globulize(argv[1])) == NULL)
1185                 return;
1186         if (chdir(locdir) == -1)
1187                 warn("Can't chdir `%s'", locdir);
1188         else {
1189                 updatelocalcwd();
1190                 if (localcwd[0]) {
1191                         fprintf(ttyout, "Local directory now: %s\n", localcwd);
1192                         code = 0;
1193                 } else {
1194                         fprintf(ttyout, "Unable to determine local directory\n");
1195                 }
1196         }
1197         (void)free(locdir);
1198 }
1199
1200 /*
1201  * Delete a single file.
1202  */
1203 void
1204 delete(int argc, char *argv[])
1205 {
1206
1207         if (argc == 0 || argc > 2 ||
1208             (argc == 1 && !another(&argc, &argv, "remote-file"))) {
1209                 UPRINTF("usage: %s remote-file\n", argv[0]);
1210                 code = -1;
1211                 return;
1212         }
1213         if (command("DELE %s", argv[1]) == COMPLETE)
1214                 dirchange = 1;
1215 }
1216
1217 /*
1218  * Delete multiple files.
1219  */
1220 void
1221 mdelete(int argc, char *argv[])
1222 {
1223         sigfunc oldintr;
1224         int ointer;
1225         char *cp;
1226
1227         if (argc == 0 ||
1228             (argc == 1 && !another(&argc, &argv, "remote-files"))) {
1229                 UPRINTF("usage: %s [remote-files]\n", argv[0]);
1230                 code = -1;
1231                 return;
1232         }
1233         mflag = 1;
1234         oldintr = xsignal(SIGINT, mintr);
1235         if (sigsetjmp(jabort, 1))
1236                 mabort(argv[0]);
1237         while ((cp = remglob(argv, 0, NULL)) != NULL) {
1238                 if (*cp == '\0') {
1239                         mflag = 0;
1240                         continue;
1241                 }
1242                 if (mflag && confirm(argv[0], cp)) {
1243                         if (command("DELE %s", cp) == COMPLETE)
1244                                 dirchange = 1;
1245                         if (!mflag && fromatty) {
1246                                 ointer = interactive;
1247                                 interactive = 1;
1248                                 if (confirm(argv[0], NULL)) {
1249                                         mflag++;
1250                                 }
1251                                 interactive = ointer;
1252                         }
1253                 }
1254         }
1255         (void)xsignal(SIGINT, oldintr);
1256         mflag = 0;
1257 }
1258
1259 /*
1260  * Rename a remote file.
1261  */
1262 void
1263 renamefile(int argc, char *argv[])
1264 {
1265
1266         if (argc == 0 || (argc == 1 && !another(&argc, &argv, "from-name")))
1267                 goto usage;
1268         if ((argc < 3 && !another(&argc, &argv, "to-name")) || argc > 3) {
1269  usage:
1270                 UPRINTF("usage: %s from-name to-name\n", argv[0]);
1271                 code = -1;
1272                 return;
1273         }
1274         if (command("RNFR %s", argv[1]) == CONTINUE &&
1275             command("RNTO %s", argv[2]) == COMPLETE)
1276                 dirchange = 1;
1277 }
1278
1279 /*
1280  * Get a directory listing of remote files.
1281  * Supports being invoked as:
1282  *      cmd             runs
1283  *      ---             ----
1284  *      dir, ls         LIST
1285  *      mlsd            MLSD
1286  *      nlist           NLST
1287  *      pdir, pls       LIST |$PAGER
1288  *      pmlsd           MLSD |$PAGER
1289  */
1290 void
1291 ls(int argc, char *argv[])
1292 {
1293         const char *cmd;
1294         char *remdir, *locbuf;
1295         const char *locfile;
1296         int pagecmd, mlsdcmd;
1297
1298         remdir = NULL;
1299         locbuf = NULL;
1300         locfile = "-";
1301         pagecmd = mlsdcmd = 0;
1302                         /*
1303                          * the only commands that start with `p' are
1304                          * the `pager' versions.
1305                          */
1306         if (argv[0][0] == 'p')
1307                 pagecmd = 1;
1308         if (strcmp(argv[0] + pagecmd , "mlsd") == 0) {
1309                 if (! features[FEAT_MLST]) {
1310                         fprintf(ttyout,
1311                            "MLSD is not supported by the remote server.\n");
1312                         return;
1313                 }
1314                 mlsdcmd = 1;
1315         }
1316         if (argc == 0)
1317                 goto usage;
1318
1319         if (mlsdcmd)
1320                 cmd = "MLSD";
1321         else if (strcmp(argv[0] + pagecmd, "nlist") == 0)
1322                 cmd = "NLST";
1323         else
1324                 cmd = "LIST";
1325
1326         if (argc > 1)
1327                 remdir = argv[1];
1328         if (argc > 2)
1329                 locfile = argv[2];
1330         if (argc > 3 || ((pagecmd | mlsdcmd) && argc > 2)) {
1331  usage:
1332                 if (pagecmd || mlsdcmd)
1333                         UPRINTF("usage: %s [remote-path]\n", argv[0]);
1334                 else
1335                         UPRINTF("usage: %s [remote-path [local-file]]\n",
1336                             argv[0]);
1337                 code = -1;
1338                 goto freels;
1339         }
1340
1341         if (pagecmd) {
1342                 const char *p;
1343                 size_t len;
1344
1345                 p = getoptionvalue("pager");
1346                 if (EMPTYSTRING(p))
1347                         p = DEFAULTPAGER;
1348                 len = strlen(p) + 2;
1349                 locbuf = ftp_malloc(len);
1350                 locbuf[0] = '|';
1351                 (void)strlcpy(locbuf + 1, p, len - 1);
1352                 locfile = locbuf;
1353         } else if ((strcmp(locfile, "-") != 0) && *locfile != '|') {
1354                 if ((locbuf = globulize(locfile)) == NULL ||
1355                     !confirm("output to local-file:", locbuf)) {
1356                         code = -1;
1357                         goto freels;
1358                 }
1359                 locfile = locbuf;
1360         }
1361         recvrequest(cmd, locfile, remdir, "w", 0, 0);
1362  freels:
1363         if (locbuf)
1364                 (void)free(locbuf);
1365 }
1366
1367 /*
1368  * Get a directory listing of multiple remote files.
1369  */
1370 void
1371 mls(int argc, char *argv[])
1372 {
1373         sigfunc oldintr;
1374         int ointer, i;
1375         int volatile dolist;
1376         char * volatile dest, *odest;
1377         const char *lmode;
1378
1379         if (argc == 0)
1380                 goto usage;
1381         if (argc < 2 && !another(&argc, &argv, "remote-files"))
1382                 goto usage;
1383         if (argc < 3 && !another(&argc, &argv, "local-file")) {
1384  usage:
1385                 UPRINTF("usage: %s remote-files local-file\n", argv[0]);
1386                 code = -1;
1387                 return;
1388         }
1389         odest = dest = argv[argc - 1];
1390         argv[argc - 1] = NULL;
1391         if (strcmp(dest, "-") && *dest != '|')
1392                 if (((dest = globulize(dest)) == NULL) ||
1393                     !confirm("output to local-file:", dest)) {
1394                         code = -1;
1395                         return;
1396         }
1397         dolist = strcmp(argv[0], "mls");
1398         mflag = 1;
1399         oldintr = xsignal(SIGINT, mintr);
1400         if (sigsetjmp(jabort, 1))
1401                 mabort(argv[0]);
1402         for (i = 1; mflag && i < argc-1 && connected; i++) {
1403                 lmode = (i == 1) ? "w" : "a";
1404                 recvrequest(dolist ? "LIST" : "NLST", dest, argv[i], lmode,
1405                     0, 0);
1406                 if (!mflag && fromatty) {
1407                         ointer = interactive;
1408                         interactive = 1;
1409                         if (confirm(argv[0], NULL)) {
1410                                 mflag++;
1411                         }
1412                         interactive = ointer;
1413                 }
1414         }
1415         (void)xsignal(SIGINT, oldintr);
1416         mflag = 0;
1417         if (dest != odest)                      /* free up after globulize() */
1418                 free(dest);
1419 }
1420
1421 /*
1422  * Do a shell escape
1423  */
1424 /*ARGSUSED*/
1425 void
1426 shell(int argc, char *argv[])
1427 {
1428         pid_t pid;
1429         sigfunc oldintr;
1430         char shellnam[MAXPATHLEN];
1431         const char *shellp, *namep;
1432         int wait_status;
1433
1434         if (argc == 0) {
1435                 UPRINTF("usage: %s [command [args]]\n", argv[0]);
1436                 code = -1;
1437                 return;
1438         }
1439         oldintr = xsignal(SIGINT, SIG_IGN);
1440         if ((pid = fork()) == 0) {
1441                 (void)closefrom(3);
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                 auto_sndbuf = 0;
2659         }
2660         if (dir & RATE_GET) {
2661                 rcvbuf_size = size;
2662                 auto_rcvbuf = 0;
2663         }
2664         fprintf(ttyout, "Socket buffer sizes: send %d, receive %d.\n",
2665             sndbuf_size, rcvbuf_size);
2666         code = 0;
2667 }
2668
2669 /*
2670  * Set or display options (defaults are provided by various env vars)
2671  */
2672 void
2673 setoption(int argc, char *argv[])
2674 {
2675         struct option *o;
2676
2677         code = -1;
2678         if (argc == 0 || (argc != 1 && argc != 3)) {
2679                 UPRINTF("usage: %s [option value]\n", argv[0]);
2680                 return;
2681         }
2682
2683 #define OPTIONINDENT ((int) sizeof("http_proxy"))
2684         if (argc == 1) {
2685                 for (o = optiontab; o->name != NULL; o++) {
2686                         fprintf(ttyout, "%-*s\t%s\n", OPTIONINDENT,
2687                             o->name, o->value ? o->value : "");
2688                 }
2689         } else {
2690                 set_option(argv[1], argv[2], 1);
2691         }
2692         code = 0;
2693 }
2694
2695 void
2696 set_option(const char * option, const char * value, int doverbose)
2697 {
2698         struct option *o;
2699
2700         o = getoption(option);
2701         if (o == NULL) {
2702                 fprintf(ttyout, "No such option `%s'.\n", option);
2703                 return;
2704         }
2705         FREEPTR(o->value);
2706         o->value = ftp_strdup(value);
2707         if (verbose && doverbose)
2708                 fprintf(ttyout, "Setting `%s' to `%s'.\n",
2709                     o->name, o->value);
2710 }
2711
2712 /*
2713  * Unset an option
2714  */
2715 void
2716 unsetoption(int argc, char *argv[])
2717 {
2718         struct option *o;
2719
2720         code = -1;
2721         if (argc == 0 || argc != 2) {
2722                 UPRINTF("usage: %s option\n", argv[0]);
2723                 return;
2724         }
2725
2726         o = getoption(argv[1]);
2727         if (o == NULL) {
2728                 fprintf(ttyout, "No such option `%s'.\n", argv[1]);
2729                 return;
2730         }
2731         FREEPTR(o->value);
2732         fprintf(ttyout, "Unsetting `%s'.\n", o->name);
2733         code = 0;
2734 }
2735
2736 /*
2737  * Display features supported by the remote host.
2738  */
2739 void
2740 feat(int argc, char *argv[])
2741 {
2742         int oldverbose = verbose;
2743
2744         if (argc == 0) {
2745                 UPRINTF("usage: %s\n", argv[0]);
2746                 code = -1;
2747                 return;
2748         }
2749         if (! features[FEAT_FEAT]) {
2750                 fprintf(ttyout,
2751                     "FEAT is not supported by the remote server.\n");
2752                 return;
2753         }
2754         verbose = 1;    /* If we aren't verbose, this doesn't do anything! */
2755         (void)command("FEAT");
2756         verbose = oldverbose;
2757 }
2758
2759 void
2760 mlst(int argc, char *argv[])
2761 {
2762         int oldverbose = verbose;
2763
2764         if (argc < 1 || argc > 2) {
2765                 UPRINTF("usage: %s [remote-path]\n", argv[0]);
2766                 code = -1;
2767                 return;
2768         }
2769         if (! features[FEAT_MLST]) {
2770                 fprintf(ttyout,
2771                     "MLST is not supported by the remote server.\n");
2772                 return;
2773         }
2774         verbose = 1;    /* If we aren't verbose, this doesn't do anything! */
2775         COMMAND_1ARG(argc, argv, "MLST");
2776         verbose = oldverbose;
2777 }
2778
2779 void
2780 opts(int argc, char *argv[])
2781 {
2782         int oldverbose = verbose;
2783
2784         if (argc < 2 || argc > 3) {
2785                 UPRINTF("usage: %s command [options]\n", argv[0]);
2786                 code = -1;
2787                 return;
2788         }
2789         if (! features[FEAT_FEAT]) {
2790                 fprintf(ttyout,
2791                     "OPTS is not supported by the remote server.\n");
2792                 return;
2793         }
2794         verbose = 1;    /* If we aren't verbose, this doesn't do anything! */
2795         if (argc == 2)
2796                 command("OPTS %s", argv[1]);
2797         else
2798                 command("OPTS %s %s", argv[1], argv[2]);
2799         verbose = oldverbose;
2800 }