main.c revision 1.58
1 /* $NetBSD: main.c,v 1.58 1999/10/01 08:01:13 lukem Exp $ */ 2 3 /* 4 * Copyright (c) 1985, 1989, 1993, 1994 5 * The Regents of the University of California. 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. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 /* 37 * Copyright (C) 1997 and 1998 WIDE Project. 38 * All rights reserved. 39 * 40 * Redistribution and use in source and binary forms, with or without 41 * modification, are permitted provided that the following conditions 42 * are met: 43 * 1. Redistributions of source code must retain the above copyright 44 * notice, this list of conditions and the following disclaimer. 45 * 2. Redistributions in binary form must reproduce the above copyright 46 * notice, this list of conditions and the following disclaimer in the 47 * documentation and/or other materials provided with the distribution. 48 * 3. Neither the name of the project 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 PROJECT 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 PROJECT 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 1.58 1999/10/01 08:01:13 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 <paths.h> 88 #include <pwd.h> 89 #include <stdio.h> 90 #include <stdlib.h> 91 #include <string.h> 92 #include <unistd.h> 93 94 #define GLOBAL /* force GLOBAL decls in ftp_var.h to be declared */ 95 #include "ftp_var.h" 96 97 #define FTP_PROXY "ftp_proxy" /* env var with FTP proxy location */ 98 #define HTTP_PROXY "http_proxy" /* env var with HTTP proxy location */ 99 #define NO_PROXY "no_proxy" /* env var with list of non-proxied 100 * hosts, comma or space separated */ 101 102 int main __P((int, char **)); 103 104 int 105 main(argc, argv) 106 int argc; 107 char *argv[]; 108 { 109 int ch, top, rval; 110 struct passwd *pw = NULL; 111 char *cp, *ep; 112 int dumbterm, s, len; 113 114 ftpport = "ftp"; 115 httpport = "http"; 116 ftpproxy = getenv(FTP_PROXY); 117 httpproxy = getenv(HTTP_PROXY); 118 no_proxy = getenv(NO_PROXY); 119 gateport = NULL; 120 cp = getenv("FTPSERVERPORT"); 121 if (cp != NULL) 122 gateport = cp; 123 else 124 gateport = "ftpgate"; 125 doglob = 1; 126 interactive = 1; 127 autologin = 1; 128 passivemode = 1; 129 activefallback = 1; 130 preserve = 1; 131 verbose = 0; 132 progress = 0; 133 gatemode = 0; 134 data = -1; 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 epsv4bad = 0; 153 154 /* 155 * Get the default socket buffer sizes if we don't already have them. 156 * It doesn't matter which socket we do this to, because on the first 157 * call no socket buffer sizes will have been modified, so we are 158 * guaranteed to get the system defaults. 159 */ 160 s = socket(AF_INET, SOCK_STREAM, 0); 161 if (s == -1) 162 err(1, "can't create socket"); 163 len = sizeof(rcvbuf_size); 164 if (getsockopt(s, SOL_SOCKET, SO_RCVBUF, (void *) &rcvbuf_size, &len) 165 < 0) 166 err(1, "unable to get default rcvbuf size"); 167 len = sizeof(sndbuf_size); 168 if (getsockopt(s, SOL_SOCKET, SO_SNDBUF, (void *) &sndbuf_size, &len) 169 < 0) 170 err(1, "unable to get default sndbuf size"); 171 (void)close(s); 172 /* sanity check returned buffer sizes */ 173 if (rcvbuf_size <= 0) 174 rcvbuf_size = 8192; 175 if (sndbuf_size <= 0) 176 sndbuf_size = 8192; 177 178 marg_sl = sl_init(); 179 if ((tmpdir = getenv("TMPDIR")) == NULL) 180 tmpdir = _PATH_TMP; 181 182 /* Set default operation mode based on FTPMODE environment variable */ 183 if ((cp = getenv("FTPMODE")) != NULL) { 184 if (strcmp(cp, "passive") == 0) { 185 passivemode = 1; 186 activefallback = 0; 187 } else if (strcmp(cp, "active") == 0) { 188 passivemode = 0; 189 activefallback = 0; 190 } else if (strcmp(cp, "gate") == 0) { 191 gatemode = 1; 192 } else if (strcmp(cp, "auto") == 0) { 193 passivemode = 1; 194 activefallback = 1; 195 } else 196 warnx("unknown $FTPMODE '%s'; using defaults", cp); 197 } 198 199 if (strcmp(__progname, "pftp") == 0) { 200 passivemode = 1; 201 activefallback = 0; 202 } else if (strcmp(__progname, "gate-ftp") == 0) 203 gatemode = 1; 204 205 gateserver = getenv("FTPSERVER"); 206 if (gateserver == NULL || *gateserver == '\0') 207 gateserver = GATE_SERVER; 208 if (gatemode) { 209 if (*gateserver == '\0') { 210 warnx( 211 "Neither $FTPSERVER nor GATE_SERVER is defined; disabling gate-ftp"); 212 gatemode = 0; 213 } 214 } 215 216 cp = getenv("TERM"); 217 if (cp == NULL || strcmp(cp, "dumb") == 0) 218 dumbterm = 1; 219 else 220 dumbterm = 0; 221 fromatty = isatty(fileno(stdin)); 222 ttyout = stdout; 223 if (isatty(fileno(ttyout))) { 224 verbose = 1; /* verbose if to a tty */ 225 if (! dumbterm) { 226 #ifndef NO_EDITCOMPLETE 227 if (fromatty) /* editing mode on if tty is usable */ 228 editing = 1; 229 #endif 230 #ifndef NO_PROGRESS 231 if (foregroundproc()) 232 progress = 1; /* progress bar on if fg */ 233 #endif 234 } 235 } 236 237 while ((ch = getopt(argc, argv, "Aadefgino:pP:r:RtT:vV")) != -1) { 238 switch (ch) { 239 case 'A': 240 activefallback = 0; 241 passivemode = 0; 242 break; 243 244 case 'a': 245 anonftp = 1; 246 break; 247 248 case 'd': 249 options |= SO_DEBUG; 250 debug++; 251 break; 252 253 case 'e': 254 #ifndef NO_EDITCOMPLETE 255 editing = 0; 256 #endif 257 break; 258 259 case 'f': 260 flushcache = 1; 261 break; 262 263 case 'g': 264 doglob = 0; 265 break; 266 267 case 'i': 268 interactive = 0; 269 break; 270 271 case 'n': 272 autologin = 0; 273 break; 274 275 case 'o': 276 outfile = optarg; 277 if (strcmp(outfile, "-") == 0) 278 ttyout = stderr; 279 break; 280 281 case 'p': 282 passivemode = 1; 283 activefallback = 0; 284 break; 285 286 case 'P': 287 ftpport = optarg; 288 break; 289 290 case 'r': 291 retry_connect = strtol(optarg, &ep, 10); 292 if (retry_connect < 1 || *ep != '\0') 293 errx(1, "bad retry value: %s", optarg); 294 break; 295 296 case 'R': 297 restartautofetch = 1; 298 break; 299 300 case 't': 301 trace = 1; 302 break; 303 304 case 'T': 305 { 306 int targc; 307 char *targv[6], *oac; 308 309 /* look for `dir,max[,incr]' */ 310 targc = 0; 311 targv[targc++] = "-T"; 312 oac = xstrdup(optarg); 313 314 while ((cp = strsep(&oac, ",")) != NULL) { 315 if (*cp == '\0') { 316 warnx("bad throttle value: %s", optarg); 317 usage(); 318 /* NOTREACHED */ 319 } 320 targv[targc++] = cp; 321 if (targc >= 5) 322 break; 323 } 324 if (parserate(targc, targv, 1) == -1) 325 usage(); 326 free(oac); 327 break; 328 } 329 330 case 'v': 331 progress = verbose = 1; 332 break; 333 334 case 'V': 335 progress = verbose = 0; 336 break; 337 338 default: 339 usage(); 340 } 341 } 342 /* set line buffering on ttyout */ 343 setvbuf(ttyout, NULL, _IOLBF, 0); 344 argc -= optind; 345 argv += optind; 346 347 cpend = 0; /* no pending replies */ 348 proxy = 0; /* proxy not active */ 349 crflag = 1; /* strip c.r. on ascii gets */ 350 sendport = -1; /* not using ports */ 351 /* 352 * Set up the home directory in case we're globbing. 353 */ 354 cp = getlogin(); 355 if (cp != NULL) { 356 pw = getpwnam(cp); 357 } 358 if (pw == NULL) 359 pw = getpwuid(getuid()); 360 if (pw != NULL) 361 (void)strlcpy(home, pw->pw_dir, sizeof(home)); 362 else 363 (void)strlcpy(home, "/", sizeof(home)); 364 365 setttywidth(0); 366 (void)xsignal(SIGWINCH, setttywidth); 367 (void)xsignal(SIGUSR1, crankrate); 368 (void)xsignal(SIGUSR2, crankrate); 369 370 #ifdef __GNUC__ /* to shut up gcc warnings */ 371 (void)&argc; 372 (void)&argv; 373 #endif 374 375 if (argc > 0) { 376 if (strchr(argv[0], ':') != NULL && ! isipv6addr(argv[0])) { 377 rval = auto_fetch(argc, argv); 378 if (rval >= 0) /* -1 == connected and cd-ed */ 379 exit(rval); 380 } else { 381 char *xargv[5]; 382 383 if (setjmp(toplevel)) 384 exit(0); 385 (void)xsignal(SIGINT, (sig_t)intr); 386 (void)xsignal(SIGPIPE, (sig_t)lostpeer); 387 xargv[0] = __progname; 388 xargv[1] = argv[0]; 389 xargv[2] = argv[1]; 390 xargv[3] = argv[2]; 391 xargv[4] = NULL; 392 do { 393 setpeer(argc+1, xargv); 394 if (!retry_connect) 395 break; 396 if (!connected) { 397 macnum = 0; 398 fprintf(ttyout, 399 "Retrying in %d seconds...\n", 400 retry_connect); 401 sleep(retry_connect); 402 } 403 } while (!connected); 404 retry_connect = 0; /* connected, stop hiding msgs */ 405 } 406 } 407 #ifndef NO_EDITCOMPLETE 408 controlediting(); 409 #endif /* !NO_EDITCOMPLETE */ 410 top = setjmp(toplevel) == 0; 411 if (top) { 412 (void)xsignal(SIGINT, (sig_t)intr); 413 (void)xsignal(SIGPIPE, (sig_t)lostpeer); 414 } 415 for (;;) { 416 cmdscanner(top); 417 top = 1; 418 } 419 } 420 421 void 422 intr() 423 { 424 425 alarmtimer(0); 426 longjmp(toplevel, 1); 427 } 428 429 void 430 lostpeer() 431 { 432 433 alarmtimer(0); 434 if (connected) { 435 if (cout != NULL) { 436 (void)shutdown(fileno(cout), 1+1); 437 (void)fclose(cout); 438 cout = NULL; 439 } 440 if (data >= 0) { 441 (void)shutdown(data, 1+1); 442 (void)close(data); 443 data = -1; 444 } 445 connected = 0; 446 } 447 pswitch(1); 448 if (connected) { 449 if (cout != NULL) { 450 (void)shutdown(fileno(cout), 1+1); 451 (void)fclose(cout); 452 cout = NULL; 453 } 454 connected = 0; 455 } 456 proxflag = 0; 457 pswitch(0); 458 } 459 460 /* 461 * Generate a prompt 462 */ 463 char * 464 prompt() 465 { 466 return ("ftp> "); 467 } 468 469 /* 470 * Command parser. 471 */ 472 void 473 cmdscanner(top) 474 int top; 475 { 476 struct cmd *c; 477 int num; 478 479 if (!top 480 #ifndef NO_EDITCOMPLETE 481 && !editing 482 #endif /* !NO_EDITCOMPLETE */ 483 ) 484 (void)putc('\n', ttyout); 485 for (;;) { 486 #ifndef NO_EDITCOMPLETE 487 if (!editing) { 488 #endif /* !NO_EDITCOMPLETE */ 489 if (fromatty) { 490 fputs(prompt(), ttyout); 491 (void)fflush(ttyout); 492 } 493 if (fgets(line, sizeof(line), stdin) == NULL) 494 quit(0, 0); 495 num = strlen(line); 496 if (num == 0) 497 break; 498 if (line[--num] == '\n') { 499 if (num == 0) 500 break; 501 line[num] = '\0'; 502 } else if (num == sizeof(line) - 2) { 503 fputs("sorry, input line too long.\n", ttyout); 504 while ((num = getchar()) != '\n' && num != EOF) 505 /* void */; 506 break; 507 } /* else it was a line without a newline */ 508 #ifndef NO_EDITCOMPLETE 509 } else { 510 const char *buf; 511 HistEvent ev; 512 cursor_pos = NULL; 513 514 if ((buf = el_gets(el, &num)) == NULL || num == 0) 515 quit(0, 0); 516 if (buf[--num] == '\n') { 517 if (num == 0) 518 break; 519 } else if (num >= sizeof(line)) { 520 fputs("sorry, input line too long.\n", ttyout); 521 break; 522 } 523 memcpy(line, buf, num); 524 line[num] = '\0'; 525 history(hist, &ev, H_ENTER, buf); 526 } 527 #endif /* !NO_EDITCOMPLETE */ 528 529 makeargv(); 530 if (margc == 0) 531 continue; 532 c = getcmd(margv[0]); 533 if (c == (struct cmd *)-1) { 534 fputs("?Ambiguous command.\n", ttyout); 535 continue; 536 } 537 if (c == NULL) { 538 #if !defined(NO_EDITCOMPLETE) 539 /* 540 * attempt to el_parse() unknown commands. 541 * any command containing a ':' would be parsed 542 * as "[prog:]cmd ...", and will result in a 543 * false positive if prog != "ftp", so treat 544 * such commands as invalid. 545 */ 546 if (strchr(margv[0], ':') != NULL || 547 el_parse(el, margc, margv) != 0) 548 #endif /* !NO_EDITCOMPLETE */ 549 fputs("?Invalid command.\n", ttyout); 550 continue; 551 } 552 if (c->c_conn && !connected) { 553 fputs("Not connected.\n", ttyout); 554 continue; 555 } 556 confirmrest = 0; 557 (*c->c_handler)(margc, margv); 558 if (bell && c->c_bell) 559 (void)putc('\007', ttyout); 560 if (c->c_handler != help) 561 break; 562 } 563 (void)xsignal(SIGINT, (sig_t)intr); 564 (void)xsignal(SIGPIPE, (sig_t)lostpeer); 565 } 566 567 struct cmd * 568 getcmd(name) 569 const char *name; 570 { 571 const char *p, *q; 572 struct cmd *c, *found; 573 int nmatches, longest; 574 575 if (name == NULL) 576 return (0); 577 578 longest = 0; 579 nmatches = 0; 580 found = 0; 581 for (c = cmdtab; (p = c->c_name) != NULL; c++) { 582 for (q = name; *q == *p++; q++) 583 if (*q == 0) /* exact match? */ 584 return (c); 585 if (!*q) { /* the name was a prefix */ 586 if (q - name > longest) { 587 longest = q - name; 588 nmatches = 1; 589 found = c; 590 } else if (q - name == longest) 591 nmatches++; 592 } 593 } 594 if (nmatches > 1) 595 return ((struct cmd *)-1); 596 return (found); 597 } 598 599 /* 600 * Slice a string up into argc/argv. 601 */ 602 603 int slrflag; 604 605 void 606 makeargv() 607 { 608 char *argp; 609 610 stringbase = line; /* scan from first of buffer */ 611 argbase = argbuf; /* store from first of buffer */ 612 slrflag = 0; 613 marg_sl->sl_cur = 0; /* reset to start of marg_sl */ 614 for (margc = 0; ; margc++) { 615 argp = slurpstring(); 616 sl_add(marg_sl, argp); 617 if (argp == NULL) 618 break; 619 } 620 #ifndef NO_EDITCOMPLETE 621 if (cursor_pos == line) { 622 cursor_argc = 0; 623 cursor_argo = 0; 624 } else if (cursor_pos != NULL) { 625 cursor_argc = margc; 626 cursor_argo = strlen(margv[margc-1]); 627 } 628 #endif /* !NO_EDITCOMPLETE */ 629 } 630 631 #ifdef NO_EDITCOMPLETE 632 #define INC_CHKCURSOR(x) (x)++ 633 #else /* !NO_EDITCOMPLETE */ 634 #define INC_CHKCURSOR(x) { (x)++ ; \ 635 if (x == cursor_pos) { \ 636 cursor_argc = margc; \ 637 cursor_argo = ap-argbase; \ 638 cursor_pos = NULL; \ 639 } } 640 641 #endif /* !NO_EDITCOMPLETE */ 642 643 /* 644 * Parse string into argbuf; 645 * implemented with FSM to 646 * handle quoting and strings 647 */ 648 char * 649 slurpstring() 650 { 651 int got_one = 0; 652 char *sb = stringbase; 653 char *ap = argbase; 654 char *tmp = argbase; /* will return this if token found */ 655 656 if (*sb == '!' || *sb == '$') { /* recognize ! as a token for shell */ 657 switch (slrflag) { /* and $ as token for macro invoke */ 658 case 0: 659 slrflag++; 660 INC_CHKCURSOR(stringbase); 661 return ((*sb == '!') ? "!" : "$"); 662 /* NOTREACHED */ 663 case 1: 664 slrflag++; 665 altarg = stringbase; 666 break; 667 default: 668 break; 669 } 670 } 671 672 S0: 673 switch (*sb) { 674 675 case '\0': 676 goto OUT; 677 678 case ' ': 679 case '\t': 680 INC_CHKCURSOR(sb); 681 goto S0; 682 683 default: 684 switch (slrflag) { 685 case 0: 686 slrflag++; 687 break; 688 case 1: 689 slrflag++; 690 altarg = sb; 691 break; 692 default: 693 break; 694 } 695 goto S1; 696 } 697 698 S1: 699 switch (*sb) { 700 701 case ' ': 702 case '\t': 703 case '\0': 704 goto OUT; /* end of token */ 705 706 case '\\': 707 INC_CHKCURSOR(sb); 708 goto S2; /* slurp next character */ 709 710 case '"': 711 INC_CHKCURSOR(sb); 712 goto S3; /* slurp quoted string */ 713 714 default: 715 *ap = *sb; /* add character to token */ 716 ap++; 717 INC_CHKCURSOR(sb); 718 got_one = 1; 719 goto S1; 720 } 721 722 S2: 723 switch (*sb) { 724 725 case '\0': 726 goto OUT; 727 728 default: 729 *ap = *sb; 730 ap++; 731 INC_CHKCURSOR(sb); 732 got_one = 1; 733 goto S1; 734 } 735 736 S3: 737 switch (*sb) { 738 739 case '\0': 740 goto OUT; 741 742 case '"': 743 INC_CHKCURSOR(sb); 744 goto S1; 745 746 default: 747 *ap = *sb; 748 ap++; 749 INC_CHKCURSOR(sb); 750 got_one = 1; 751 goto S3; 752 } 753 754 OUT: 755 if (got_one) 756 *ap++ = '\0'; 757 argbase = ap; /* update storage pointer */ 758 stringbase = sb; /* update scan pointer */ 759 if (got_one) { 760 return (tmp); 761 } 762 switch (slrflag) { 763 case 0: 764 slrflag++; 765 break; 766 case 1: 767 slrflag++; 768 altarg = NULL; 769 break; 770 default: 771 break; 772 } 773 return (NULL); 774 } 775 776 /* 777 * Help command. 778 * Call each command handler with argc == 0 and argv[0] == name. 779 */ 780 void 781 help(argc, argv) 782 int argc; 783 char *argv[]; 784 { 785 struct cmd *c; 786 787 if (argc == 1) { 788 StringList *buf; 789 790 buf = sl_init(); 791 fprintf(ttyout, 792 "%sommands may be abbreviated. Commands are:\n\n", 793 proxy ? "Proxy c" : "C"); 794 for (c = cmdtab; c < &cmdtab[NCMDS]; c++) 795 if (c->c_name && (!proxy || c->c_proxy)) 796 sl_add(buf, c->c_name); 797 list_vertical(buf); 798 sl_free(buf, 0); 799 return; 800 } 801 802 #define HELPINDENT ((int) sizeof("disconnect")) 803 804 while (--argc > 0) { 805 char *arg; 806 807 arg = *++argv; 808 c = getcmd(arg); 809 if (c == (struct cmd *)-1) 810 fprintf(ttyout, "?Ambiguous help command %s\n", arg); 811 else if (c == NULL) 812 fprintf(ttyout, "?Invalid help command %s\n", arg); 813 else 814 fprintf(ttyout, "%-*s\t%s\n", HELPINDENT, 815 c->c_name, c->c_help); 816 } 817 } 818 819 void 820 usage() 821 { 822 (void)fprintf(stderr, 823 "usage: %s [-AadefginpRtvV] [-r retry] [-o outfile] [-P port] [-T dir,max[,inc]\n" 824 " [host [port]] [file:///file] [ftp://[user[:pass]@]host[:port]/path[/]]\n" 825 " [http://[user[:pass]@]host[:port]/path] [host:path[/]]\n", __progname); 826 exit(1); 827 } 828
Indexes created Thu Sep 25 16:09:42 GMT 2025