1 /* $NetBSD: main.c,v 1.138 2026/02/08 08:31:58 lukem Exp $ */ 2 3 /*- 4 * Copyright (c) 1996-2026 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Luke Mewburn. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /* 33 * Copyright (c) 1985, 1989, 1993, 1994 34 * The Regents of the University of California. All rights reserved. 35 * 36 * Redistribution and use in source and binary forms, with or without 37 * modification, are permitted provided that the following conditions 38 * are met: 39 * 1. Redistributions of source code must retain the above copyright 40 * notice, this list of conditions and the following disclaimer. 41 * 2. Redistributions in binary form must reproduce the above copyright 42 * notice, this list of conditions and the following disclaimer in the 43 * documentation and/or other materials provided with the distribution. 44 * 3. Neither the name of the University nor the names of its contributors 45 * may be used to endorse or promote products derived from this software 46 * without specific prior written permission. 47 * 48 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 49 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 50 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 51 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 52 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 53 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 54 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 55 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 56 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 57 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 58 * SUCH DAMAGE. 59 */ 60 61 /* 62 * Copyright (C) 1997 and 1998 WIDE Project. 63 * All rights reserved. 64 * 65 * Redistribution and use in source and binary forms, with or without 66 * modification, are permitted provided that the following conditions 67 * are met: 68 * 1. Redistributions of source code must retain the above copyright 69 * notice, this list of conditions and the following disclaimer. 70 * 2. Redistributions in binary form must reproduce the above copyright 71 * notice, this list of conditions and the following disclaimer in the 72 * documentation and/or other materials provided with the distribution. 73 * 3. Neither the name of the project nor the names of its contributors 74 * may be used to endorse or promote products derived from this software 75 * without specific prior written permission. 76 * 77 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 78 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 79 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 80 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 81 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 82 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 83 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 84 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 85 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 86 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 87 * SUCH DAMAGE. 88 */ 89 90 #include <sys/cdefs.h> 91 #ifndef lint 92 __COPYRIGHT("@(#) Copyright (c) 1985, 1989, 1993, 1994\ 93 The Regents of the University of California. All rights reserved.\ 94 Copyright 1996-2015 The NetBSD Foundation, Inc. All rights reserved"); 95 #endif /* not lint */ 96 97 #ifndef lint 98 #if 0 99 static char sccsid[] = "@(#)main.c 8.6 (Berkeley) 10/9/94"; 100 #else 101 __RCSID("$NetBSD: main.c,v 1.138 2026/02/08 08:31:58 lukem Exp $"); 102 #endif 103 #endif /* not lint */ 104 105 /* 106 * FTP User Program -- Command Interface. 107 */ 108 #include <sys/types.h> 109 #include <sys/socket.h> 110 111 #include <err.h> 112 #include <errno.h> 113 #include <netdb.h> 114 #include <paths.h> 115 #include <pwd.h> 116 #include <signal.h> 117 #include <stdio.h> 118 #include <stdlib.h> 119 #include <string.h> 120 #include <time.h> 121 #include <unistd.h> 122 #include <locale.h> 123 124 #define GLOBAL /* force GLOBAL decls in ftp_var.h to be declared */ 125 #include "ftp_var.h" 126 127 #define FTP_PROXY "ftp_proxy" /* env var with FTP proxy location */ 128 #define HTTP_PROXY "http_proxy" /* env var with HTTP proxy location */ 129 #define HTTPS_PROXY "https_proxy" /* env var with HTTPS proxy location */ 130 #define NO_PROXY "no_proxy" /* env var with list of non-proxied 131 * hosts, comma or space separated */ 132 133 static int usage(void); 134 static int usage_help(void); 135 static void setupoption(const char *, const char *, const char *); 136 137 int 138 main(int volatile argc, char **volatile argv) 139 { 140 int ch, rval; 141 struct passwd *pw; 142 char *cp, *ep, *anonpass, *upload_path, *src_addr; 143 const char *anonuser; 144 int dumbterm, isupload; 145 size_t len; 146 147 tzset(); 148 setlocale(LC_ALL, ""); 149 setprogname(argv[0]); 150 151 sigint_raised = 0; 152 153 ftpport = "ftp"; 154 httpport = "http"; 155 #ifdef WITH_SSL 156 httpsport = "https"; 157 #endif 158 gateport = NULL; 159 cp = getenv("FTPSERVERPORT"); 160 if (cp != NULL) 161 gateport = cp; 162 else 163 gateport = "ftpgate"; 164 doglob = 1; 165 interactive = 1; 166 autologin = 1; 167 passivemode = 1; 168 activefallback = 1; 169 preserve = 1; 170 verbose = 0; 171 progress = 0; 172 gatemode = 0; 173 data = -1; 174 outfile = NULL; 175 restartautofetch = 0; 176 #ifndef NO_EDITCOMPLETE 177 editing = 0; 178 el = NULL; 179 hist = NULL; 180 #endif 181 bytes = 0; 182 mark = HASHBYTES; 183 rate_get = 0; 184 rate_get_incr = DEFAULTINCR; 185 rate_put = 0; 186 rate_put_incr = DEFAULTINCR; 187 #ifdef INET6 188 epsv4 = 1; 189 epsv6 = 1; 190 #else 191 epsv4 = 0; 192 epsv6 = 0; 193 #endif 194 epsv4bad = 0; 195 epsv6bad = 0; 196 src_addr = NULL; 197 upload_path = NULL; 198 isupload = 0; 199 reply_callback = NULL; 200 #ifdef INET6 201 family = AF_UNSPEC; 202 #else 203 family = AF_INET; /* force AF_INET if no INET6 support */ 204 #endif 205 206 netrc[0] = '\0'; 207 cp = getenv("NETRC"); 208 if (cp != NULL && strlcpy(netrc, cp, sizeof(netrc)) >= sizeof(netrc)) 209 errx(1, "$NETRC `%s': %s", cp, strerror(ENAMETOOLONG)); 210 211 marg_sl = ftp_sl_init(); 212 if ((tmpdir = getenv("TMPDIR")) == NULL) 213 tmpdir = _PATH_TMP; 214 215 /* Set default operation mode based on FTPMODE environment variable */ 216 if ((cp = getenv("FTPMODE")) != NULL) { 217 if (strcasecmp(cp, "passive") == 0) { 218 passivemode = 1; 219 activefallback = 0; 220 } else if (strcasecmp(cp, "active") == 0) { 221 passivemode = 0; 222 activefallback = 0; 223 } else if (strcasecmp(cp, "gate") == 0) { 224 gatemode = 1; 225 } else if (strcasecmp(cp, "auto") == 0) { 226 passivemode = 1; 227 activefallback = 1; 228 } else 229 warnx("Unknown $FTPMODE `%s'; using defaults", cp); 230 } 231 232 if (strcmp(getprogname(), "pftp") == 0) { 233 passivemode = 1; 234 activefallback = 0; 235 } else if (strcmp(getprogname(), "gate-ftp") == 0) 236 gatemode = 1; 237 238 gateserver = getenv("FTPSERVER"); 239 if (gateserver == NULL || *gateserver == '\0') 240 gateserver = GATE_SERVER; 241 if (gatemode) { 242 if (*gateserver == '\0') { 243 warnx( 244 "Neither $FTPSERVER nor GATE_SERVER is defined; disabling gate-ftp"); 245 gatemode = 0; 246 } 247 } 248 249 cp = getenv("TERM"); 250 if (cp == NULL || strcmp(cp, "dumb") == 0) 251 dumbterm = 1; 252 else 253 dumbterm = 0; 254 fromatty = isatty(fileno(stdin)); 255 ttyout = stdout; 256 if (isatty(fileno(ttyout))) { 257 verbose = 1; /* verbose if to a tty */ 258 if (! dumbterm) { 259 #ifndef NO_EDITCOMPLETE 260 if (fromatty) /* editing mode on if tty is usable */ 261 editing = 1; 262 #endif 263 #ifndef NO_PROGRESS 264 if (foregroundproc()) 265 progress = 1; /* progress bar on if fg */ 266 #endif 267 } 268 } 269 270 custom_headers = ftp_sl_init(); 271 while ((ch = getopt(argc, argv, ":46Aab:defgH:iN:no:P:pq:Rr:s:T:tu:Vvx:")) != -1) { 272 switch (ch) { 273 case '4': 274 family = AF_INET; 275 break; 276 277 case '6': 278 #ifdef INET6 279 family = AF_INET6; 280 #else 281 warnx("INET6 support is not available; ignoring -6"); 282 #endif 283 break; 284 285 case 'A': 286 activefallback = 0; 287 passivemode = 0; 288 break; 289 290 case 'a': 291 anonftp = 1; 292 break; 293 294 case 'b': 295 ftp_buflen = strtol(optarg, &ep, 0); 296 if (ftp_buflen < 1 || *ep != '\0') 297 errx(1, "Bad buflen value: %s", optarg); 298 break; 299 300 case 'd': 301 options |= SO_DEBUG; 302 ftp_debug++; 303 break; 304 305 case 'e': 306 #ifndef NO_EDITCOMPLETE 307 editing = 0; 308 #endif 309 break; 310 311 case 'f': 312 flushcache = 1; 313 break; 314 315 case 'g': 316 doglob = 0; 317 break; 318 319 case 'H': 320 ftp_sl_add(custom_headers, ftp_strdup(optarg)); 321 break; 322 323 case 'i': 324 interactive = 0; 325 break; 326 327 case 'N': 328 if (strlcpy(netrc, optarg, sizeof(netrc)) 329 >= sizeof(netrc)) 330 errx(1, "%s: %s", optarg, 331 strerror(ENAMETOOLONG)); 332 break; 333 334 case 'n': 335 autologin = 0; 336 break; 337 338 case 'o': 339 outfile = ftp_strdup(optarg); 340 if (strcmp(outfile, "-") == 0) 341 ttyout = stderr; 342 break; 343 344 case 'P': 345 ftpport = optarg; 346 break; 347 348 case 'p': 349 passivemode = 1; 350 activefallback = 0; 351 break; 352 353 case 'q': 354 quit_time = (int)strtol(optarg, &ep, 10); 355 if (quit_time < 1 || *ep != '\0') 356 errx(1, "Bad quit value: %s", optarg); 357 break; 358 359 case 'R': 360 restartautofetch = 1; 361 break; 362 363 case 'r': 364 retry_connect = (int)strtol(optarg, &ep, 10); 365 if (retry_connect < 1 || *ep != '\0') 366 errx(1, "Bad retry value: %s", optarg); 367 break; 368 369 case 's': 370 src_addr = optarg; 371 break; 372 373 case 'T': 374 { 375 int targc; 376 char *targv[6], *oac; 377 char cmdbuf[MAX_C_NAME]; 378 379 /* look for `dir,max[,incr]' */ 380 targc = 0; 381 (void)strlcpy(cmdbuf, "-T", sizeof(cmdbuf)); 382 targv[targc++] = cmdbuf; 383 oac = ftp_strdup(optarg); 384 385 while ((cp = strsep(&oac, ",")) != NULL) { 386 if (*cp == '\0') { 387 warnx("Bad throttle value `%s'", 388 optarg); 389 return usage(); 390 } 391 targv[targc++] = cp; 392 if (targc >= 5) 393 break; 394 } 395 if (parserate(targc, targv, 1) == -1) { 396 return usage(); 397 } 398 free(oac); 399 break; 400 } 401 402 case 't': 403 trace = 1; 404 break; 405 406 case 'u': 407 { 408 isupload = 1; 409 interactive = 0; 410 upload_path = ftp_strdup(optarg); 411 412 break; 413 } 414 415 case 'V': 416 progress = verbose = 0; 417 break; 418 419 case 'v': 420 progress = verbose = 1; 421 break; 422 423 case 'x': 424 sndbuf_size = strsuftoi(optarg); 425 if (sndbuf_size < 0) 426 errx(1, "Bad xferbuf value: %s", optarg); 427 rcvbuf_size = sndbuf_size; 428 break; 429 430 case '?': 431 if (optopt == '?') { 432 return usage_help(); 433 } 434 warnx("-%c: unknown option", optopt); 435 return usage(); 436 437 case ':': 438 warnx("-%c: missing argument", optopt); 439 return usage(); 440 441 default: 442 errx(1, "unimplemented option -%c", ch); 443 } 444 } 445 /* set line buffering on ttyout */ 446 setvbuf(ttyout, NULL, _IOLBF, 0); 447 argc -= optind; 448 argv += optind; 449 450 cpend = 0; /* no pending replies */ 451 proxy = 0; /* proxy not active */ 452 crflag = 1; /* strip c.r. on ascii gets */ 453 sendport = -1; /* not using ports */ 454 455 if (src_addr != NULL) { 456 struct addrinfo hints; 457 int error; 458 459 memset(&hints, 0, sizeof(hints)); 460 hints.ai_family = family; 461 hints.ai_socktype = SOCK_STREAM; 462 hints.ai_flags = AI_PASSIVE; 463 error = getaddrinfo(src_addr, NULL, &hints, &bindai); 464 if (error) { 465 errx(1, "Can't lookup `%s': %s", src_addr, 466 (error == EAI_SYSTEM) ? strerror(errno) 467 : gai_strerror(error)); 468 } 469 } 470 471 /* 472 * Cache the user name and home directory. 473 */ 474 localhome = NULL; 475 localname = NULL; 476 anonuser = "anonymous"; 477 cp = getenv("HOME"); 478 if (! EMPTYSTRING(cp)) 479 localhome = ftp_strdup(cp); 480 pw = NULL; 481 cp = getlogin(); 482 if (cp != NULL) 483 pw = getpwnam(cp); 484 if (pw == NULL) 485 pw = getpwuid(getuid()); 486 if (pw != NULL) { 487 if (localhome == NULL && !EMPTYSTRING(pw->pw_dir)) 488 localhome = ftp_strdup(pw->pw_dir); 489 localname = ftp_strdup(pw->pw_name); 490 } 491 if (netrc[0] == '\0' && localhome != NULL) { 492 if (strlcpy(netrc, localhome, sizeof(netrc)) >= sizeof(netrc) || 493 strlcat(netrc, "/.netrc", sizeof(netrc)) >= sizeof(netrc)) { 494 warnx("%s/.netrc: %s", localhome, 495 strerror(ENAMETOOLONG)); 496 netrc[0] = '\0'; 497 } 498 } 499 if (localhome == NULL) 500 localhome = ftp_strdup("/"); 501 502 /* 503 * Every anonymous FTP server I've encountered will accept the 504 * string "username@", and will append the hostname itself. We 505 * do this by default since many servers are picky about not 506 * having a FQDN in the anonymous password. 507 * - thorpej (at) NetBSD.org 508 */ 509 len = strlen(anonuser) + 2; 510 anonpass = ftp_malloc(len); 511 (void)strlcpy(anonpass, anonuser, len); 512 (void)strlcat(anonpass, "@", len); 513 514 /* 515 * set all the defaults for options defined in 516 * struct option optiontab[] declared in cmdtab.c 517 */ 518 setupoption("anonpass", getenv("FTPANONPASS"), anonpass); 519 setupoption("ftp_proxy", getenv(FTP_PROXY), ""); 520 setupoption("http_proxy", getenv(HTTP_PROXY), ""); 521 setupoption("https_proxy", getenv(HTTPS_PROXY), ""); 522 setupoption("no_proxy", getenv(NO_PROXY), ""); 523 setupoption("pager", getenv("PAGER"), DEFAULTPAGER); 524 setupoption("prompt", getenv("FTPPROMPT"), DEFAULTPROMPT); 525 setupoption("rprompt", getenv("FTPRPROMPT"), DEFAULTRPROMPT); 526 setupoption("sslnoverify", getenv("FTPSSLNOVERIFY"), ""); 527 528 free(anonpass); 529 530 setttywidth(0); 531 #ifdef SIGINFO 532 (void)xsignal(SIGINFO, psummary); 533 #endif 534 (void)xsignal(SIGQUIT, psummary); 535 (void)xsignal(SIGUSR1, crankrate); 536 (void)xsignal(SIGUSR2, crankrate); 537 (void)xsignal(SIGWINCH, setttywidth); 538 539 if (argc > 0) { 540 if (isupload) { 541 rval = auto_put(argc, argv, upload_path); 542 sigint_or_rval_exit: 543 if (sigint_raised) { 544 (void)xsignal(SIGINT, SIG_DFL); 545 raise(SIGINT); 546 } 547 exit(rval); 548 } else if (strchr(argv[0], ':') != NULL 549 && ! isipv6addr(argv[0])) { 550 rval = auto_fetch(argc, argv); 551 if (rval >= 0) /* -1 == connected and cd-ed */ 552 goto sigint_or_rval_exit; 553 } else { 554 char *xargv[4], *uuser, *host; 555 char cmdbuf[MAXPATHLEN]; 556 557 if ((rval = sigsetjmp(toplevel, 1))) 558 goto sigint_or_rval_exit; 559 (void)xsignal(SIGINT, intr); 560 (void)xsignal(SIGPIPE, lostpeer); 561 uuser = NULL; 562 host = argv[0]; 563 cp = strchr(host, '@'); 564 if (cp) { 565 *cp = '\0'; 566 uuser = host; 567 host = cp + 1; 568 } 569 (void)strlcpy(cmdbuf, getprogname(), sizeof(cmdbuf)); 570 xargv[0] = cmdbuf; 571 xargv[1] = host; 572 xargv[2] = argv[1]; 573 xargv[3] = NULL; 574 do { 575 int oautologin; 576 577 oautologin = autologin; 578 if (uuser != NULL) { 579 anonftp = 0; 580 autologin = 0; 581 } 582 setpeer(argc+1, xargv); 583 autologin = oautologin; 584 if (connected == 1 && uuser != NULL) 585 (void)ftp_login(host, uuser, NULL); 586 if (!retry_connect) 587 break; 588 if (!connected) { 589 macnum = 0; 590 fprintf(ttyout, 591 "Retrying in %d seconds...\n", 592 retry_connect); 593 sleep(retry_connect); 594 } 595 } while (!connected); 596 retry_connect = 0; /* connected, stop hiding msgs */ 597 } 598 } 599 if (isupload) { 600 return usage(); 601 } 602 603 #ifndef NO_EDITCOMPLETE 604 controlediting(); 605 #endif /* !NO_EDITCOMPLETE */ 606 607 (void)sigsetjmp(toplevel, 1); 608 (void)xsignal(SIGINT, intr); 609 (void)xsignal(SIGPIPE, lostpeer); 610 for (;;) 611 cmdscanner(); 612 } 613 614 /* 615 * Generate a prompt 616 */ 617 char * 618 prompt(void) 619 { 620 static char **promptopt; 621 static char buf[MAXPATHLEN]; 622 623 if (promptopt == NULL) { 624 struct option *o; 625 626 o = getoption("prompt"); 627 if (o == NULL) 628 errx(1, "prompt: no such option `prompt'"); 629 promptopt = &(o->value); 630 } 631 formatbuf(buf, sizeof(buf), *promptopt ? *promptopt : DEFAULTPROMPT); 632 return (buf); 633 } 634 635 /* 636 * Generate an rprompt 637 */ 638 char * 639 rprompt(void) 640 { 641 static char **rpromptopt; 642 static char buf[MAXPATHLEN]; 643 644 if (rpromptopt == NULL) { 645 struct option *o; 646 647 o = getoption("rprompt"); 648 if (o == NULL) 649 errx(1, "rprompt: no such option `rprompt'"); 650 rpromptopt = &(o->value); 651 } 652 formatbuf(buf, sizeof(buf), *rpromptopt ? *rpromptopt : DEFAULTRPROMPT); 653 return (buf); 654 } 655 656 /* 657 * Command parser. 658 */ 659 void 660 cmdscanner(void) 661 { 662 struct cmd *c; 663 char *p; 664 #ifndef NO_EDITCOMPLETE 665 int ch; 666 size_t num; 667 #endif 668 int len; 669 char cmdbuf[MAX_C_NAME]; 670 671 for (;;) { 672 #ifndef NO_EDITCOMPLETE 673 if (!editing) { 674 #endif /* !NO_EDITCOMPLETE */ 675 if (fromatty) { 676 fputs(prompt(), ttyout); 677 p = rprompt(); 678 if (*p) 679 fprintf(ttyout, "%s ", p); 680 } 681 (void)fflush(ttyout); 682 len = get_line(stdin, line, sizeof(line), NULL); 683 switch (len) { 684 case -1: /* EOF */ 685 case -2: /* error */ 686 if (fromatty) 687 putc('\n', ttyout); 688 justquit(); 689 /* NOTREACHED */ 690 case -3: /* too long; try again */ 691 fputs("Sorry, input line is too long.\n", 692 ttyout); 693 continue; 694 case 0: /* empty; try again */ 695 continue; 696 default: /* all ok */ 697 break; 698 } 699 #ifndef NO_EDITCOMPLETE 700 } else { 701 const char *buf; 702 HistEvent ev; 703 cursor_pos = NULL; 704 705 buf = el_gets(el, &ch); 706 num = ch; 707 if (buf == NULL || num == 0) { 708 if (fromatty) 709 putc('\n', ttyout); 710 justquit(); 711 } 712 if (num >= sizeof(line)) { 713 fputs("Sorry, input line is too long.\n", 714 ttyout); 715 break; 716 } 717 memcpy(line, buf, num); 718 if (line[--num] == '\n') { 719 line[num] = '\0'; 720 if (num == 0) 721 break; 722 } 723 history(hist, &ev, H_ENTER, buf); 724 } 725 #endif /* !NO_EDITCOMPLETE */ 726 727 makeargv(); 728 if (margc == 0) 729 continue; 730 c = getcmd(margv[0]); 731 if (c == (struct cmd *)-1) { 732 fputs("?Ambiguous command.\n", ttyout); 733 continue; 734 } 735 if (c == NULL) { 736 #if !defined(NO_EDITCOMPLETE) 737 /* 738 * attempt to el_parse() unknown commands. 739 * any command containing a ':' would be parsed 740 * as "[prog:]cmd ...", and will result in a 741 * false positive if prog != "ftp", so treat 742 * such commands as invalid. 743 */ 744 if (strchr(margv[0], ':') != NULL || 745 !editing || 746 el_parse(el, margc, (void *)margv) != 0) 747 #endif /* !NO_EDITCOMPLETE */ 748 fputs("?Invalid command.\n", ttyout); 749 continue; 750 } 751 if (c->c_conn && !connected) { 752 fputs("Not connected.\n", ttyout); 753 continue; 754 } 755 confirmrest = 0; 756 (void)strlcpy(cmdbuf, c->c_name, sizeof(cmdbuf)); 757 margv[0] = cmdbuf; 758 (*c->c_handler)(margc, margv); 759 if (bell && c->c_bell) 760 (void)putc('\007', ttyout); 761 if (c->c_handler != help) 762 break; 763 } 764 (void)xsignal(SIGINT, intr); 765 (void)xsignal(SIGPIPE, lostpeer); 766 } 767 768 struct cmd * 769 getcmd(const char *name) 770 { 771 const char *p, *q; 772 struct cmd *c, *found; 773 int nmatches; 774 ptrdiff_t longest; 775 776 if (name == NULL) 777 return (0); 778 779 longest = 0; 780 nmatches = 0; 781 found = 0; 782 for (c = cmdtab; (p = c->c_name) != NULL; c++) { 783 for (q = name; *q == *p++; q++) 784 if (*q == 0) /* exact match? */ 785 return (c); 786 if (!*q) { /* the name was a prefix */ 787 if (q - name > longest) { 788 longest = q - name; 789 nmatches = 1; 790 found = c; 791 } else if (q - name == longest) 792 nmatches++; 793 } 794 } 795 if (nmatches > 1) 796 return ((struct cmd *)-1); 797 return (found); 798 } 799 800 /* 801 * Slice a string up into argc/argv. 802 */ 803 804 static int slrflag; 805 806 void 807 makeargv(void) 808 { 809 char *argp; 810 811 stringbase = line; /* scan from first of buffer */ 812 argbase = argbuf; /* store from first of buffer */ 813 slrflag = 0; 814 marg_sl->sl_cur = 0; /* reset to start of marg_sl */ 815 for (margc = 0; ; margc++) { 816 argp = slurpstring(); 817 ftp_sl_add(marg_sl, argp); 818 if (argp == NULL) 819 break; 820 } 821 #ifndef NO_EDITCOMPLETE 822 if (cursor_pos == line) { 823 cursor_argc = 0; 824 cursor_argo = 0; 825 } else if (cursor_pos != NULL) { 826 cursor_argc = margc; 827 cursor_argo = strlen(margv[margc-1]); 828 } 829 #endif /* !NO_EDITCOMPLETE */ 830 } 831 832 #ifdef NO_EDITCOMPLETE 833 #define INC_CHKCURSOR(x) (x)++ 834 #else /* !NO_EDITCOMPLETE */ 835 #define INC_CHKCURSOR(x) { (x)++ ; \ 836 if (x == cursor_pos) { \ 837 cursor_argc = margc; \ 838 cursor_argo = ap-argbase; \ 839 cursor_pos = NULL; \ 840 } } 841 842 #endif /* !NO_EDITCOMPLETE */ 843 844 /* 845 * Parse string into argbuf; 846 * implemented with FSM to 847 * handle quoting and strings 848 */ 849 char * 850 slurpstring(void) 851 { 852 static char bangstr[2] = { '!', '\0' }; 853 static char dollarstr[2] = { '$', '\0' }; 854 int got_one = 0; 855 char *sb = stringbase; 856 char *ap = argbase; 857 char *tmp = argbase; /* will return this if token found */ 858 859 if (*sb == '!' || *sb == '$') { /* recognize ! as a token for shell */ 860 switch (slrflag) { /* and $ as token for macro invoke */ 861 case 0: 862 slrflag++; 863 INC_CHKCURSOR(stringbase); 864 return ((*sb == '!') ? bangstr : dollarstr); 865 case 1: 866 slrflag++; 867 altarg = stringbase; 868 break; 869 default: 870 break; 871 } 872 } 873 874 S0: 875 switch (*sb) { 876 877 case '\0': 878 goto OUT; 879 880 case ' ': 881 case '\t': 882 INC_CHKCURSOR(sb); 883 goto S0; 884 885 default: 886 switch (slrflag) { 887 case 0: 888 slrflag++; 889 break; 890 case 1: 891 slrflag++; 892 altarg = sb; 893 break; 894 default: 895 break; 896 } 897 goto S1; 898 } 899 900 S1: 901 switch (*sb) { 902 903 case ' ': 904 case '\t': 905 case '\0': 906 goto OUT; /* end of token */ 907 908 case '\\': 909 INC_CHKCURSOR(sb); 910 goto S2; /* slurp next character */ 911 912 case '"': 913 INC_CHKCURSOR(sb); 914 goto S3; /* slurp quoted string */ 915 916 default: 917 *ap = *sb; /* add character to token */ 918 ap++; 919 INC_CHKCURSOR(sb); 920 got_one = 1; 921 goto S1; 922 } 923 924 S2: 925 switch (*sb) { 926 927 case '\0': 928 goto OUT; 929 930 default: 931 *ap = *sb; 932 ap++; 933 INC_CHKCURSOR(sb); 934 got_one = 1; 935 goto S1; 936 } 937 938 S3: 939 switch (*sb) { 940 941 case '\0': 942 goto OUT; 943 944 case '"': 945 INC_CHKCURSOR(sb); 946 goto S1; 947 948 default: 949 *ap = *sb; 950 ap++; 951 INC_CHKCURSOR(sb); 952 got_one = 1; 953 goto S3; 954 } 955 956 OUT: 957 if (got_one) 958 *ap++ = '\0'; 959 argbase = ap; /* update storage pointer */ 960 stringbase = sb; /* update scan pointer */ 961 if (got_one) { 962 return (tmp); 963 } 964 switch (slrflag) { 965 case 0: 966 slrflag++; 967 break; 968 case 1: 969 slrflag++; 970 altarg = NULL; 971 break; 972 default: 973 break; 974 } 975 return (NULL); 976 } 977 978 /* 979 * Help/usage command. 980 * Call each command handler with argc == 0 and argv[0] == name. 981 */ 982 void 983 help(int argc, char *argv[]) 984 { 985 struct cmd *c; 986 char *nargv[1], *cmd; 987 const char *p; 988 int isusage; 989 990 cmd = argv[0]; 991 isusage = (strcmp(cmd, "usage") == 0); 992 if (argc == 0 || (isusage && argc == 1)) { 993 UPRINTF("usage: %s [command ...]\n", cmd); 994 return; 995 } 996 if (argc == 1) { 997 StringList *buf; 998 999 buf = ftp_sl_init(); 1000 fprintf(ttyout, 1001 "%sommands may be abbreviated. Commands are:\n\n", 1002 proxy ? "Proxy c" : "C"); 1003 for (c = cmdtab; (p = c->c_name) != NULL; c++) 1004 if (!proxy || c->c_proxy) 1005 ftp_sl_add(buf, ftp_strdup(p)); 1006 list_vertical(buf); 1007 sl_free(buf, 1); 1008 return; 1009 } 1010 1011 #define HELPINDENT ((int) sizeof("disconnect")) 1012 1013 while (--argc > 0) { 1014 char *arg; 1015 char cmdbuf[MAX_C_NAME]; 1016 1017 arg = *++argv; 1018 c = getcmd(arg); 1019 if (c == (struct cmd *)-1) 1020 fprintf(ttyout, "?Ambiguous %s command `%s'\n", 1021 cmd, arg); 1022 else if (c == NULL) 1023 fprintf(ttyout, "?Invalid %s command `%s'\n", 1024 cmd, arg); 1025 else { 1026 if (isusage) { 1027 (void)strlcpy(cmdbuf, c->c_name, sizeof(cmdbuf)); 1028 nargv[0] = cmdbuf; 1029 (*c->c_handler)(0, nargv); 1030 } else 1031 fprintf(ttyout, "%-*s\t%s\n", HELPINDENT, 1032 c->c_name, c->c_help); 1033 } 1034 } 1035 } 1036 1037 struct option * 1038 getoption(const char *name) 1039 { 1040 const char *p; 1041 struct option *c; 1042 1043 if (name == NULL) 1044 return (NULL); 1045 for (c = optiontab; (p = c->name) != NULL; c++) { 1046 if (strcasecmp(p, name) == 0) 1047 return (c); 1048 } 1049 return (NULL); 1050 } 1051 1052 char * 1053 getoptionvalue(const char *name) 1054 { 1055 struct option *c; 1056 1057 if (name == NULL) 1058 errx(1, "getoptionvalue: invoked with NULL name"); 1059 c = getoption(name); 1060 if (c != NULL) 1061 return (c->value); 1062 errx(1, "getoptionvalue: invoked with unknown option `%s'", name); 1063 /* NOTREACHED */ 1064 } 1065 1066 static void 1067 setupoption(const char *name, const char *value, const char *defaultvalue) 1068 { 1069 set_option(name, value ? value : defaultvalue, 0); 1070 } 1071 1072 static void 1073 synopsis(FILE * stream) 1074 { 1075 const char * progname = getprogname(); 1076 1077 /* Note: don't use tabs in the message below. */ 1078 fprintf(stream, 1079 "usage: %s [-46AadefginpRtVv] [-b BUFSIZE] [-H HEADER] [-N NETRC] [-o OUTPUT]\n" 1080 " [-P PORT] [-q QUITTIME] [-r RETRY] [-s SRCADDR] [-T DIR,MAX[,INC]]\n" 1081 " [-x XFERSIZE]\n" 1082 " [[USER@]HOST [PORT]]\n" 1083 " [[USER@]HOST:[PATH][/]]\n" 1084 " [file:///PATH]\n" 1085 " [ftp://[USER[:PASSWORD]@]HOST[:PORT]/PATH[/][;type=TYPE]]\n" 1086 " [http://[USER[:PASSWORD]@]HOST[:PORT]/PATH]\n" 1087 #ifdef WITH_SSL 1088 " [https://[USER[:PASSWORD]@]HOST[:PORT]/PATH]\n" 1089 #endif 1090 " ...\n" 1091 " %s -u URL FILE ...\n" 1092 " %s -?\n", 1093 progname, progname, progname); 1094 } 1095 1096 static int 1097 usage_help(void) 1098 { 1099 synopsis(stdout); 1100 #ifndef NO_USAGE 1101 /* Note: don't use tabs in the message below. */ 1102 printf( 1103 " -4 Only use IPv4 addresses\n" 1104 " -6 Only use IPv6 addresses\n" 1105 " -A Force active mode\n" 1106 " -a Use anonymous login\n" 1107 " -b BUFSIZE Use BUFSIZE bytes for fetch buffer\n" 1108 " -d Enable debugging\n" 1109 " -e Disable command-line editing\n" 1110 " -f Force cache reload for FTP or HTTP proxy transfers\n" 1111 " -g Disable file name globbing\n" 1112 " -H HEADER Add custom HTTP header HEADER for HTTP transfers;\n" 1113 " may be repeated for additional headers\n" 1114 " -i Disable interactive prompt during multiple file transfers\n" 1115 " -N NETRC Use NETRC instead of ~/.netrc\n" 1116 " -n Disable auto-login\n" 1117 " -o OUTPUT Save auto-fetched files to OUTPUT\n" 1118 " -P PORT Use port PORT\n" 1119 " -p Force passive mode\n" 1120 " -q QUITTIME Quit if connection stalls for QUITTIME seconds\n" 1121 " -R Restart non-proxy auto-fetch\n" 1122 " -r RETRY Retry failed connection attempts after RETRY seconds\n" 1123 " -s SRCADDR Use IP source address SRCADDR\n" 1124 " -T DIR,MAX[,INC]\n" 1125 " Set maximum transfer rate for direction DIR (all, get, or put)\n" 1126 " to MAX bytes/s, with optional increment INC bytes/s\n" 1127 " -t Enable packet tracing\n" 1128 " -u URL URL to upload file arguments to\n" 1129 " -V Disable verbose and progress\n" 1130 " -v Enable verbose and progress\n" 1131 " -x XFERSIZE Set socket send and receive size to XFERSIZE bytes\n" 1132 " -? Display this help and exit\n" 1133 ); 1134 #endif 1135 return EXIT_SUCCESS; 1136 } 1137 1138 static int 1139 usage(void) 1140 { 1141 synopsis(stderr); 1142 return EXIT_FAILURE; 1143 } 1144
Indexes created Mon Feb 23 08:20:23 UTC 2026