main.c revision 1.54
1 /* $NetBSD: main.c,v 1.54 1999/09/30 12:18:04 lukem Exp $ */ 2 3 /* 4 * Copyright (C) 1997 and 1998 WIDE Project. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the project nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * 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. All advertising materials mentioning features or use of this software 45 * must display the following acknowledgement: 46 * This product includes software developed by the University of 47 * California, Berkeley and its contributors. 48 * 4. Neither the name of the University nor the names of its contributors 49 * may be used to endorse or promote products derived from this software 50 * without specific prior written permission. 51 * 52 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 53 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 54 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 55 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 56 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 57 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 58 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 59 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 60 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 61 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 62 * SUCH DAMAGE. 63 */ 64 65 #include <sys/cdefs.h> 66 #ifndef lint 67 __COPYRIGHT("@(#) Copyright (c) 1985, 1989, 1993, 1994\n\ 68 The Regents of the University of California. All rights reserved.\n"); 69 #endif /* not lint */ 70 71 #ifndef lint 72 #if 0 73 static char sccsid[] = "@(#)main.c 8.6 (Berkeley) 10/9/94"; 74 #else 75 __RCSID("$NetBSD: main.c,v 1.54 1999/09/30 12:18:04 lukem Exp $"); 76 #endif 77 #endif /* not lint */ 78 79 /* 80 * FTP User Program -- Command Interface. 81 */ 82 #include <sys/types.h> 83 #include <sys/socket.h> 84 85 #include <err.h> 86 #include <netdb.h> 87 #include <pwd.h> 88 #include <stdio.h> 89 #include <stdlib.h> 90 #include <string.h> 91 #include <unistd.h> 92 93 #include "ftp_var.h" 94 #include "pathnames.h" 95 96 #define FTP_PROXY "ftp_proxy" /* env var with FTP proxy location */ 97 #define HTTP_PROXY "http_proxy" /* env var with HTTP proxy location */ 98 #define NO_PROXY "no_proxy" /* env var with list of non-proxied 99 * hosts, comma or space separated */ 100 101 char home[MAXPATHLEN] = "/"; 102 103 int main __P((int, char **)); 104 105 int 106 main(argc, argv) 107 int argc; 108 char *argv[]; 109 { 110 int ch, top, rval; 111 struct passwd *pw = NULL; 112 char *cp, *ep; 113 int dumbterm, s, len; 114 115 ftpport = "ftp"; 116 httpport = "http"; 117 ftpproxy = getenv(FTP_PROXY); 118 httpproxy = getenv(HTTP_PROXY); 119 no_proxy = getenv(NO_PROXY); 120 gateport = NULL; 121 cp = getenv("FTPSERVERPORT"); 122 if (cp != NULL) 123 gateport = cp; 124 else 125 gateport = "ftpgate"; 126 doglob = 1; 127 interactive = 1; 128 autologin = 1; 129 passivemode = 1; 130 activefallback = 1; 131 preserve = 1; 132 verbose = 0; 133 progress = 0; 134 gatemode = 0; 135 outfile = NULL; 136 restartautofetch = 0; 137 #ifndef NO_EDITCOMPLETE 138 editing = 0; 139 el = NULL; 140 hist = NULL; 141 #endif 142 mark = HASHBYTES; 143 rate_get = 0; 144 rate_get_incr = DEFAULTINCR; 145 rate_put = 0; 146 rate_put_incr = DEFAULTINCR; 147 #ifdef INET6 148 epsv4 = 1; 149 #else 150 epsv4 = 0; 151 #endif 152 153 /* 154 * Get the default socket buffer sizes if we don't already have them. 155 * It doesn't matter which socket we do this to, because on the first 156 * call no socket buffer sizes will have been modified, so we are 157 * guaranteed to get the system defaults. 158 */ 159 s = socket(AF_INET, SOCK_STREAM, 0); 160 if (s == -1) 161 err(1, "can't create socket"); 162 len = sizeof(rcvbuf_size); 163 if (getsockopt(s, SOL_SOCKET, SO_RCVBUF, (void *) &rcvbuf_size, &len) 164 < 0) 165 err(1, "unable to get default rcvbuf size"); 166 len = sizeof(sndbuf_size); 167 if (getsockopt(s, SOL_SOCKET, SO_SNDBUF, (void *) &sndbuf_size, &len) 168 < 0) 169 err(1, "unable to get default sndbuf size"); 170 (void)close(s); 171 /* sanity check returned buffer sizes */ 172 if (rcvbuf_size <= 0) 173 rcvbuf_size = 8192; 174 if (sndbuf_size <= 0) 175 sndbuf_size = 8192; 176 177 marg_sl = sl_init(); 178 if ((tmpdir = getenv("TMPDIR")) == NULL) 179 tmpdir = _PATH_TMP; 180 181 /* Set default operation mode based on FTPMODE environment variable */ 182 if ((cp = getenv("FTPMODE")) != NULL) { 183 if (strcmp(cp, "passive") == 0) { 184 passivemode = 1; 185 activefallback = 0; 186 } else if (strcmp(cp, "active") == 0) { 187 passivemode = 0; 188 activefallback = 0; 189 } else if (strcmp(cp, "gate") == 0) { 190 gatemode = 1; 191 } else if (strcmp(cp, "auto") == 0) { 192 passivemode = 1; 193 activefallback = 1; 194 } else 195 warnx("unknown $FTPMODE '%s'; using defaults", cp); 196 } 197 198 if (strcmp(__progname, "pftp") == 0) { 199 passivemode = 1; 200 activefallback = 0; 201 } else if (strcmp(__progname, "gate-ftp") == 0) 202 gatemode = 1; 203 204 gateserver = getenv("FTPSERVER"); 205 if (gateserver == NULL || *gateserver == '\0') 206 gateserver = GATE_SERVER; 207 if (gatemode) { 208 if (*gateserver == '\0') { 209 warnx( 210 "Neither $FTPSERVER nor GATE_SERVER is defined; disabling gate-ftp"); 211 gatemode = 0; 212 } 213 } 214 215 cp = getenv("TERM"); 216 if (cp == NULL || strcmp(cp, "dumb") == 0) 217 dumbterm = 1; 218 else 219 dumbterm = 0; 220 fromatty = isatty(fileno(stdin)); 221 ttyout = stdout; 222 if (isatty(fileno(ttyout))) { 223 verbose = 1; /* verbose if to a tty */ 224 if (! dumbterm) { 225 #ifndef NO_EDITCOMPLETE 226 if (fromatty) /* editing mode on if tty is usable */ 227 editing = 1; 228 #endif 229 #ifndef NO_PROGRESS 230 if (foregroundproc()) 231 progress = 1; /* progress bar on if fg */ 232 #endif 233 } 234 } 235 236 while ((ch = getopt(argc, argv, "Aadefgino:pP:r:RtT:vV")) != -1) { 237 switch (ch) { 238 case 'A': 239 activefallback = 0; 240 passivemode = 0; 241 break; 242 243 case 'a': 244 anonftp = 1; 245 break; 246 247 case 'd': 248 options |= SO_DEBUG; 249 debug++; 250 break; 251 252 case 'e': 253 #ifndef NO_EDITCOMPLETE 254 editing = 0; 255 #endif 256 break; 257 258 case 'f': 259 flushcache = 1; 260 break; 261 262 case 'g': 263 doglob = 0; 264 break; 265 266 case 'i': 267 interactive = 0; 268 break; 269 270 case 'n': 271 autologin = 0; 272 break; 273 274 case 'o': 275 outfile = optarg; 276 if (strcmp(outfile, "-") == 0) 277 ttyout = stderr; 278 break; 279 280 case 'p': 281 passivemode = 1; 282 activefallback = 0; 283 break; 284 285 case 'P': 286 ftpport = optarg; 287 break; 288 289 case 'r': 290 retry_connect = strtol(optarg, &ep, 10); 291 if (retry_connect < 1 || *ep != '\0') 292 errx(1, "bad retry value: %s", optarg); 293 break; 294 295 case 'R': 296 restartautofetch = 1; 297 break; 298 299 case 't': 300 trace = 1; 301 break; 302 303 case 'T': 304 { 305 int targc; 306 char *targv[6], *oac; 307 308 /* look for `dir,max[,incr]' */ 309 targc = 0; 310 targv[targc++] = "-T"; 311 oac = xstrdup(optarg); 312 313 while ((cp = strsep(&oac, ",")) != NULL) { 314 if (*cp == '\0') { 315 warnx("bad throttle value: %s", optarg); 316 usage(); 317 /* NOTREACHED */ 318 } 319 targv[targc++] = cp; 320 if (targc >= 5) 321 break; 322 } 323 if (parserate(targc, targv, 1) == -1) 324 usage(); 325 free(oac); 326 break; 327 } 328 329 case 'v': 330 progress = verbose = 1; 331 break; 332 333 case 'V': 334 progress = verbose = 0; 335 break; 336 337 default: 338 usage(); 339 } 340 } 341 /* set line buffering on ttyout */ 342 setvbuf(ttyout, NULL, _IOLBF, 0); 343 argc -= optind; 344 argv += optind; 345 346 cpend = 0; /* no pending replies */ 347 proxy = 0; /* proxy not active */ 348 crflag = 1; /* strip c.r. on ascii gets */ 349 sendport = -1; /* not using ports */ 350 /* 351 * Set up the home directory in case we're globbing. 352 */ 353 cp = getlogin(); 354 if (cp != NULL) { 355 pw = getpwnam(cp); 356 } 357 if (pw == NULL) 358 pw = getpwuid(getuid()); 359 if (pw != NULL) 360 (void)strlcpy(home, pw->pw_dir, sizeof(home)); 361 362 setttywidth(0); 363 (void)xsignal(SIGWINCH, setttywidth); 364 (void)xsignal(SIGUSR1, crankrate); 365 (void)xsignal(SIGUSR2, crankrate); 366 367 #ifdef __GNUC__ /* to shut up gcc warnings */ 368 (void)&argc; 369 (void)&argv; 370 #endif 371 372 if (argc > 0) { 373 if (strchr(argv[0], ':') != NULL && ! isipv6addr(argv[0])) { 374 rval = auto_fetch(argc, argv); 375 if (rval >= 0) /* -1 == connected and cd-ed */ 376 exit(rval); 377 } else { 378 char *xargv[5]; 379 380 if (setjmp(toplevel)) 381 exit(0); 382 (void)xsignal(SIGINT, (sig_t)intr); 383 (void)xsignal(SIGPIPE, (sig_t)lostpeer); 384 xargv[0] = __progname; 385 xargv[1] = argv[0]; 386 xargv[2] = argv[1]; 387 xargv[3] = argv[2]; 388 xargv[4] = NULL; 389 do { 390 setpeer(argc+1, xargv); 391 if (!retry_connect) 392 break; 393 if (!connected) { 394 macnum = 0; 395 fprintf(ttyout, 396 "Retrying in %d seconds...\n", 397 retry_connect); 398 sleep(retry_connect); 399 } 400 } while (!connected); 401 retry_connect = 0; /* connected, stop hiding msgs */ 402 } 403 } 404 #ifndef NO_EDITCOMPLETE 405 controlediting(); 406 #endif /* !NO_EDITCOMPLETE */ 407 top = setjmp(toplevel) == 0; 408 if (top) { 409 (void)xsignal(SIGINT, (sig_t)intr); 410 (void)xsignal(SIGPIPE, (sig_t)lostpeer); 411 } 412 for (;;) { 413 cmdscanner(top); 414 top = 1; 415 } 416 } 417 418 void 419 intr() 420 { 421 422 alarmtimer(0); 423 longjmp(toplevel, 1); 424 } 425 426 void 427 lostpeer() 428 { 429 430 alarmtimer(0); 431 if (connected) { 432 if (cout != NULL) { 433 (void)shutdown(fileno(cout), 1+1); 434 (void)fclose(cout); 435 cout = NULL; 436 } 437 if (data >= 0) { 438 (void)shutdown(data, 1+1); 439 (void)close(data); 440 data = -1; 441 } 442 connected = 0; 443 } 444 pswitch(1); 445 if (connected) { 446 if (cout != NULL) { 447 (void)shutdown(fileno(cout), 1+1); 448 (void)fclose(cout); 449 cout = NULL; 450 } 451 connected = 0; 452 } 453 proxflag = 0; 454 pswitch(0); 455 } 456 457 /* 458 * Generate a prompt 459 */ 460 char * 461 prompt() 462 { 463 return ("ftp> "); 464 } 465 466 /* 467 * Command parser. 468 */ 469 void 470 cmdscanner(top) 471 int top; 472 { 473 struct cmd *c; 474 int num; 475 476 if (!top 477 #ifndef NO_EDITCOMPLETE 478 && !editing 479 #endif /* !NO_EDITCOMPLETE */ 480 ) 481 (void)putc('\n', ttyout); 482 for (;;) { 483 #ifndef NO_EDITCOMPLETE 484 if (!editing) { 485 #endif /* !NO_EDITCOMPLETE */ 486 if (fromatty) { 487 fputs(prompt(), ttyout); 488 (void)fflush(ttyout); 489 } 490 if (fgets(line, sizeof(line), stdin) == NULL) 491 quit(0, 0); 492 num = strlen(line); 493 if (num == 0) 494 break; 495 if (line[--num] == '\n') { 496 if (num == 0) 497 break; 498 line[num] = '\0'; 499 } else if (num == sizeof(line) - 2) { 500 fputs("sorry, input line too long.\n", ttyout); 501 while ((num = getchar()) != '\n' && num != EOF) 502 /* void */; 503 break; 504 } /* else it was a line without a newline */ 505 #ifndef NO_EDITCOMPLETE 506 } else { 507 const char *buf; 508 HistEvent ev; 509 cursor_pos = NULL; 510 511 if ((buf = el_gets(el, &num)) == NULL || num == 0) 512 quit(0, 0); 513 if (buf[--num] == '\n') { 514 if (num == 0) 515 break; 516 } else if (num >= sizeof(line)) { 517 fputs("sorry, input line too long.\n", ttyout); 518 break; 519 } 520 memcpy(line, buf, num); 521 line[num] = '\0'; 522 history(hist, &ev, H_ENTER, buf); 523 } 524 #endif /* !NO_EDITCOMPLETE */ 525 526 makeargv(); 527 if (margc == 0) 528 continue; 529 c = getcmd(margv[0]); 530 if (c == (struct cmd *)-1) { 531 fputs("?Ambiguous command.\n", ttyout); 532 continue; 533 } 534 if (c == NULL) { 535 #if !defined(NO_EDITCOMPLETE) 536 /* 537 * attempt to el_parse() unknown commands. 538 * any command containing a ':' would be parsed 539 * as "[prog:]cmd ...", and will result in a 540 * false positive if prog != "ftp", so treat 541 * such commands as invalid. 542 */ 543 if (strchr(margv[0], ':') != NULL || 544 el_parse(el, margc, margv) != 0) 545 #endif /* !NO_EDITCOMPLETE */ 546 fputs("?Invalid command.\n", ttyout); 547 continue; 548 } 549 if (c->c_conn && !connected) { 550 fputs("Not connected.\n", ttyout); 551 continue; 552 } 553 confirmrest = 0; 554 (*c->c_handler)(margc, margv); 555 if (bell && c->c_bell) 556 (void)putc('\007', ttyout); 557 if (c->c_handler != help) 558 break; 559 } 560 (void)xsignal(SIGINT, (sig_t)intr); 561 (void)xsignal(SIGPIPE, (sig_t)lostpeer); 562 } 563 564 struct cmd * 565 getcmd(name) 566 const char *name; 567 { 568 const char *p, *q; 569 struct cmd *c, *found; 570 int nmatches, longest; 571 572 if (name == NULL) 573 return (0); 574 575 longest = 0; 576 nmatches = 0; 577 found = 0; 578 for (c = cmdtab; (p = c->c_name) != NULL; c++) { 579 for (q = name; *q == *p++; q++) 580 if (*q == 0) /* exact match? */ 581 return (c); 582 if (!*q) { /* the name was a prefix */ 583 if (q - name > longest) { 584 longest = q - name; 585 nmatches = 1; 586 found = c; 587 } else if (q - name == longest) 588 nmatches++; 589 } 590 } 591 if (nmatches > 1) 592 return ((struct cmd *)-1); 593 return (found); 594 } 595 596 /* 597 * Slice a string up into argc/argv. 598 */ 599 600 int slrflag; 601 602 void 603 makeargv() 604 { 605 char *argp; 606 607 stringbase = line; /* scan from first of buffer */ 608 argbase = argbuf; /* store from first of buffer */ 609 slrflag = 0; 610 marg_sl->sl_cur = 0; /* reset to start of marg_sl */ 611 for (margc = 0; ; margc++) { 612 argp = slurpstring(); 613 sl_add(marg_sl, argp); 614 if (argp == NULL) 615 break; 616 } 617 #ifndef NO_EDITCOMPLETE 618 if (cursor_pos == line) { 619 cursor_argc = 0; 620 cursor_argo = 0; 621 } else if (cursor_pos != NULL) { 622 cursor_argc = margc; 623 cursor_argo = strlen(margv[margc-1]); 624 } 625 #endif /* !NO_EDITCOMPLETE */ 626 } 627 628 #ifdef NO_EDITCOMPLETE 629 #define INC_CHKCURSOR(x) (x)++ 630 #else /* !NO_EDITCOMPLETE */ 631 #define INC_CHKCURSOR(x) { (x)++ ; \ 632 if (x == cursor_pos) { \ 633 cursor_argc = margc; \ 634 cursor_argo = ap-argbase; \ 635 cursor_pos = NULL; \ 636 } } 637 638 #endif /* !NO_EDITCOMPLETE */ 639 640 /* 641 * Parse string into argbuf; 642 * implemented with FSM to 643 * handle quoting and strings 644 */ 645 char * 646 slurpstring() 647 { 648 int got_one = 0; 649 char *sb = stringbase; 650 char *ap = argbase; 651 char *tmp = argbase; /* will return this if token found */ 652 653 if (*sb == '!' || *sb == '$') { /* recognize ! as a token for shell */ 654 switch (slrflag) { /* and $ as token for macro invoke */ 655 case 0: 656 slrflag++; 657 INC_CHKCURSOR(stringbase); 658 return ((*sb == '!') ? "!" : "$"); 659 /* NOTREACHED */ 660 case 1: 661 slrflag++; 662 altarg = stringbase; 663 break; 664 default: 665 break; 666 } 667 } 668 669 S0: 670 switch (*sb) { 671 672 case '\0': 673 goto OUT; 674 675 case ' ': 676 case '\t': 677 INC_CHKCURSOR(sb); 678 goto S0; 679 680 default: 681 switch (slrflag) { 682 case 0: 683 slrflag++; 684 break; 685 case 1: 686 slrflag++; 687 altarg = sb; 688 break; 689 default: 690 break; 691 } 692 goto S1; 693 } 694 695 S1: 696 switch (*sb) { 697 698 case ' ': 699 case '\t': 700 case '\0': 701 goto OUT; /* end of token */ 702 703 case '\\': 704 INC_CHKCURSOR(sb); 705 goto S2; /* slurp next character */ 706 707 case '"': 708 INC_CHKCURSOR(sb); 709 goto S3; /* slurp quoted string */ 710 711 default: 712 *ap = *sb; /* add character to token */ 713 ap++; 714 INC_CHKCURSOR(sb); 715 got_one = 1; 716 goto S1; 717 } 718 719 S2: 720 switch (*sb) { 721 722 case '\0': 723 goto OUT; 724 725 default: 726 *ap = *sb; 727 ap++; 728 INC_CHKCURSOR(sb); 729 got_one = 1; 730 goto S1; 731 } 732 733 S3: 734 switch (*sb) { 735 736 case '\0': 737 goto OUT; 738 739 case '"': 740 INC_CHKCURSOR(sb); 741 goto S1; 742 743 default: 744 *ap = *sb; 745 ap++; 746 INC_CHKCURSOR(sb); 747 got_one = 1; 748 goto S3; 749 } 750 751 OUT: 752 if (got_one) 753 *ap++ = '\0'; 754 argbase = ap; /* update storage pointer */ 755 stringbase = sb; /* update scan pointer */ 756 if (got_one) { 757 return (tmp); 758 } 759 switch (slrflag) { 760 case 0: 761 slrflag++; 762 break; 763 case 1: 764 slrflag++; 765 altarg = NULL; 766 break; 767 default: 768 break; 769 } 770 return (NULL); 771 } 772 773 /* 774 * Help command. 775 * Call each command handler with argc == 0 and argv[0] == name. 776 */ 777 void 778 help(argc, argv) 779 int argc; 780 char *argv[]; 781 { 782 struct cmd *c; 783 784 if (argc == 1) { 785 StringList *buf; 786 787 buf = sl_init(); 788 fprintf(ttyout, 789 "%sommands may be abbreviated. Commands are:\n\n", 790 proxy ? "Proxy c" : "C"); 791 for (c = cmdtab; c < &cmdtab[NCMDS]; c++) 792 if (c->c_name && (!proxy || c->c_proxy)) 793 sl_add(buf, c->c_name); 794 list_vertical(buf); 795 sl_free(buf, 0); 796 return; 797 } 798 799 #define HELPINDENT ((int) sizeof("disconnect")) 800 801 while (--argc > 0) { 802 char *arg; 803 804 arg = *++argv; 805 c = getcmd(arg); 806 if (c == (struct cmd *)-1) 807 fprintf(ttyout, "?Ambiguous help command %s\n", arg); 808 else if (c == NULL) 809 fprintf(ttyout, "?Invalid help command %s\n", arg); 810 else 811 fprintf(ttyout, "%-*s\t%s\n", HELPINDENT, 812 c->c_name, c->c_help); 813 } 814 } 815 816 void 817 usage() 818 { 819 (void)fprintf(stderr, 820 "usage: %s [-AadefginpRtvV] [-r retry] [-o outfile] [-P port] [-T dir,max[,inc]\n" 821 " [host [port]] [file:///file] [ftp://[user[:pass]@]host[:port]/path[/]]\n" 822 " [http://[user[:pass]@]host[:port]/path] [host:path[/]]\n", __progname); 823 exit(1); 824 } 825
Indexes created Thu Sep 25 16:09:42 GMT 2025