main.c revision 1.60
1 /* $NetBSD: main.c,v 1.60 1999/10/05 13:05:41 lukem Exp $ */ 2 3 /*- 4 * Copyright (c) 1996-1999 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 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /* 40 * Copyright (c) 1985, 1989, 1993, 1994 41 * The Regents of the University of California. All rights reserved. 42 * 43 * Redistribution and use in source and binary forms, with or without 44 * modification, are permitted provided that the following conditions 45 * are met: 46 * 1. Redistributions of source code must retain the above copyright 47 * notice, this list of conditions and the following disclaimer. 48 * 2. Redistributions in binary form must reproduce the above copyright 49 * notice, this list of conditions and the following disclaimer in the 50 * documentation and/or other materials provided with the distribution. 51 * 3. All advertising materials mentioning features or use of this software 52 * must display the following acknowledgement: 53 * This product includes software developed by the University of 54 * California, Berkeley and its contributors. 55 * 4. Neither the name of the University nor the names of its contributors 56 * may be used to endorse or promote products derived from this software 57 * without specific prior written permission. 58 * 59 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 60 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 61 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 62 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 63 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 64 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 65 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 66 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 67 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 68 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 69 * SUCH DAMAGE. 70 */ 71 72 /* 73 * Copyright (C) 1997 and 1998 WIDE Project. 74 * All rights reserved. 75 * 76 * Redistribution and use in source and binary forms, with or without 77 * modification, are permitted provided that the following conditions 78 * are met: 79 * 1. Redistributions of source code must retain the above copyright 80 * notice, this list of conditions and the following disclaimer. 81 * 2. Redistributions in binary form must reproduce the above copyright 82 * notice, this list of conditions and the following disclaimer in the 83 * documentation and/or other materials provided with the distribution. 84 * 3. Neither the name of the project nor the names of its contributors 85 * may be used to endorse or promote products derived from this software 86 * without specific prior written permission. 87 * 88 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 89 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 90 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 91 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 92 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 93 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 94 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 95 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 96 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 97 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 98 * SUCH DAMAGE. 99 */ 100 101 #include <sys/cdefs.h> 102 #ifndef lint 103 __COPYRIGHT("@(#) Copyright (c) 1985, 1989, 1993, 1994\n\ 104 The Regents of the University of California. All rights reserved.\n"); 105 #endif /* not lint */ 106 107 #ifndef lint 108 #if 0 109 static char sccsid[] = "@(#)main.c 8.6 (Berkeley) 10/9/94"; 110 #else 111 __RCSID("$NetBSD: main.c,v 1.60 1999/10/05 13:05:41 lukem Exp $"); 112 #endif 113 #endif /* not lint */ 114 115 /* 116 * FTP User Program -- Command Interface. 117 */ 118 #include <sys/types.h> 119 #include <sys/socket.h> 120 121 #include <err.h> 122 #include <netdb.h> 123 #include <paths.h> 124 #include <pwd.h> 125 #include <stdio.h> 126 #include <stdlib.h> 127 #include <string.h> 128 #include <unistd.h> 129 130 #define GLOBAL /* force GLOBAL decls in ftp_var.h to be declared */ 131 #include "ftp_var.h" 132 133 #define FTP_PROXY "ftp_proxy" /* env var with FTP proxy location */ 134 #define HTTP_PROXY "http_proxy" /* env var with HTTP proxy location */ 135 #define NO_PROXY "no_proxy" /* env var with list of non-proxied 136 * hosts, comma or space separated */ 137 138 int main __P((int, char **)); 139 140 int 141 main(argc, argv) 142 int argc; 143 char *argv[]; 144 { 145 int ch, top, rval; 146 struct passwd *pw = NULL; 147 char *cp, *ep; 148 int dumbterm, s, len; 149 150 ftpport = "ftp"; 151 httpport = "http"; 152 ftpproxy = getenv(FTP_PROXY); 153 httpproxy = getenv(HTTP_PROXY); 154 no_proxy = getenv(NO_PROXY); 155 gateport = NULL; 156 cp = getenv("FTPSERVERPORT"); 157 if (cp != NULL) 158 gateport = cp; 159 else 160 gateport = "ftpgate"; 161 doglob = 1; 162 interactive = 1; 163 autologin = 1; 164 passivemode = 1; 165 activefallback = 1; 166 preserve = 1; 167 verbose = 0; 168 progress = 0; 169 gatemode = 0; 170 data = -1; 171 outfile = NULL; 172 restartautofetch = 0; 173 #ifndef NO_EDITCOMPLETE 174 editing = 0; 175 el = NULL; 176 hist = NULL; 177 #endif 178 bytes = 0; 179 mark = HASHBYTES; 180 rate_get = 0; 181 rate_get_incr = DEFAULTINCR; 182 rate_put = 0; 183 rate_put_incr = DEFAULTINCR; 184 #ifdef INET6 185 epsv4 = 1; 186 #else 187 epsv4 = 0; 188 #endif 189 epsv4bad = 0; 190 191 /* 192 * Get the default socket buffer sizes if we don't already have them. 193 * It doesn't matter which socket we do this to, because on the first 194 * call no socket buffer sizes will have been modified, so we are 195 * guaranteed to get the system defaults. 196 */ 197 s = socket(AF_INET, SOCK_STREAM, 0); 198 if (s == -1) 199 err(1, "can't create socket"); 200 len = sizeof(rcvbuf_size); 201 if (getsockopt(s, SOL_SOCKET, SO_RCVBUF, (void *) &rcvbuf_size, &len) 202 < 0) 203 err(1, "unable to get default rcvbuf size"); 204 len = sizeof(sndbuf_size); 205 if (getsockopt(s, SOL_SOCKET, SO_SNDBUF, (void *) &sndbuf_size, &len) 206 < 0) 207 err(1, "unable to get default sndbuf size"); 208 (void)close(s); 209 /* sanity check returned buffer sizes */ 210 if (rcvbuf_size <= 0) 211 rcvbuf_size = 8192; 212 if (sndbuf_size <= 0) 213 sndbuf_size = 8192; 214 215 marg_sl = sl_init(); 216 if ((tmpdir = getenv("TMPDIR")) == NULL) 217 tmpdir = _PATH_TMP; 218 219 /* Set default operation mode based on FTPMODE environment variable */ 220 if ((cp = getenv("FTPMODE")) != NULL) { 221 if (strcmp(cp, "passive") == 0) { 222 passivemode = 1; 223 activefallback = 0; 224 } else if (strcmp(cp, "active") == 0) { 225 passivemode = 0; 226 activefallback = 0; 227 } else if (strcmp(cp, "gate") == 0) { 228 gatemode = 1; 229 } else if (strcmp(cp, "auto") == 0) { 230 passivemode = 1; 231 activefallback = 1; 232 } else 233 warnx("unknown $FTPMODE '%s'; using defaults", cp); 234 } 235 236 if (strcmp(__progname, "pftp") == 0) { 237 passivemode = 1; 238 activefallback = 0; 239 } else if (strcmp(__progname, "gate-ftp") == 0) 240 gatemode = 1; 241 242 gateserver = getenv("FTPSERVER"); 243 if (gateserver == NULL || *gateserver == '\0') 244 gateserver = GATE_SERVER; 245 if (gatemode) { 246 if (*gateserver == '\0') { 247 warnx( 248 "Neither $FTPSERVER nor GATE_SERVER is defined; disabling gate-ftp"); 249 gatemode = 0; 250 } 251 } 252 253 cp = getenv("TERM"); 254 if (cp == NULL || strcmp(cp, "dumb") == 0) 255 dumbterm = 1; 256 else 257 dumbterm = 0; 258 fromatty = isatty(fileno(stdin)); 259 ttyout = stdout; 260 if (isatty(fileno(ttyout))) { 261 verbose = 1; /* verbose if to a tty */ 262 if (! dumbterm) { 263 #ifndef NO_EDITCOMPLETE 264 if (fromatty) /* editing mode on if tty is usable */ 265 editing = 1; 266 #endif 267 #ifndef NO_PROGRESS 268 if (foregroundproc()) 269 progress = 1; /* progress bar on if fg */ 270 #endif 271 } 272 } 273 274 while ((ch = getopt(argc, argv, "Aadefgino:pP:r:RtT:vV")) != -1) { 275 switch (ch) { 276 case 'A': 277 activefallback = 0; 278 passivemode = 0; 279 break; 280 281 case 'a': 282 anonftp = 1; 283 break; 284 285 case 'd': 286 options |= SO_DEBUG; 287 debug++; 288 break; 289 290 case 'e': 291 #ifndef NO_EDITCOMPLETE 292 editing = 0; 293 #endif 294 break; 295 296 case 'f': 297 flushcache = 1; 298 break; 299 300 case 'g': 301 doglob = 0; 302 break; 303 304 case 'i': 305 interactive = 0; 306 break; 307 308 case 'n': 309 autologin = 0; 310 break; 311 312 case 'o': 313 outfile = optarg; 314 if (strcmp(outfile, "-") == 0) 315 ttyout = stderr; 316 break; 317 318 case 'p': 319 passivemode = 1; 320 activefallback = 0; 321 break; 322 323 case 'P': 324 ftpport = optarg; 325 break; 326 327 case 'r': 328 retry_connect = strtol(optarg, &ep, 10); 329 if (retry_connect < 1 || *ep != '\0') 330 errx(1, "bad retry value: %s", optarg); 331 break; 332 333 case 'R': 334 restartautofetch = 1; 335 break; 336 337 case 't': 338 trace = 1; 339 break; 340 341 case 'T': 342 { 343 int targc; 344 char *targv[6], *oac; 345 346 /* look for `dir,max[,incr]' */ 347 targc = 0; 348 targv[targc++] = "-T"; 349 oac = xstrdup(optarg); 350 351 while ((cp = strsep(&oac, ",")) != NULL) { 352 if (*cp == '\0') { 353 warnx("bad throttle value: %s", optarg); 354 usage(); 355 /* NOTREACHED */ 356 } 357 targv[targc++] = cp; 358 if (targc >= 5) 359 break; 360 } 361 if (parserate(targc, targv, 1) == -1) 362 usage(); 363 free(oac); 364 break; 365 } 366 367 case 'v': 368 progress = verbose = 1; 369 break; 370 371 case 'V': 372 progress = verbose = 0; 373 break; 374 375 default: 376 usage(); 377 } 378 } 379 /* set line buffering on ttyout */ 380 setvbuf(ttyout, NULL, _IOLBF, 0); 381 argc -= optind; 382 argv += optind; 383 384 cpend = 0; /* no pending replies */ 385 proxy = 0; /* proxy not active */ 386 crflag = 1; /* strip c.r. on ascii gets */ 387 sendport = -1; /* not using ports */ 388 /* 389 * Set up the home directory in case we're globbing. 390 */ 391 cp = getlogin(); 392 if (cp != NULL) { 393 pw = getpwnam(cp); 394 } 395 if (pw == NULL) 396 pw = getpwuid(getuid()); 397 if (pw != NULL) 398 (void)strlcpy(home, pw->pw_dir, sizeof(home)); 399 else 400 (void)strlcpy(home, "/", sizeof(home)); 401 402 setttywidth(0); 403 #ifdef SIGINFO 404 (void)xsignal(SIGINFO, psummary); 405 #endif 406 (void)xsignal(SIGQUIT, psummary); 407 (void)xsignal(SIGUSR1, crankrate); 408 (void)xsignal(SIGUSR2, crankrate); 409 (void)xsignal(SIGWINCH, setttywidth); 410 411 #ifdef __GNUC__ /* to shut up gcc warnings */ 412 (void)&argc; 413 (void)&argv; 414 #endif 415 416 if (argc > 0) { 417 if (strchr(argv[0], ':') != NULL && ! isipv6addr(argv[0])) { 418 rval = auto_fetch(argc, argv); 419 if (rval >= 0) /* -1 == connected and cd-ed */ 420 exit(rval); 421 } else { 422 char *xargv[5]; 423 424 if (setjmp(toplevel)) 425 exit(0); 426 (void)xsignal(SIGINT, (sig_t)intr); 427 (void)xsignal(SIGPIPE, (sig_t)lostpeer); 428 xargv[0] = __progname; 429 xargv[1] = argv[0]; 430 xargv[2] = argv[1]; 431 xargv[3] = argv[2]; 432 xargv[4] = NULL; 433 do { 434 setpeer(argc+1, xargv); 435 if (!retry_connect) 436 break; 437 if (!connected) { 438 macnum = 0; 439 fprintf(ttyout, 440 "Retrying in %d seconds...\n", 441 retry_connect); 442 sleep(retry_connect); 443 } 444 } while (!connected); 445 retry_connect = 0; /* connected, stop hiding msgs */ 446 } 447 } 448 #ifndef NO_EDITCOMPLETE 449 controlediting(); 450 #endif /* !NO_EDITCOMPLETE */ 451 top = setjmp(toplevel) == 0; 452 if (top) { 453 (void)xsignal(SIGINT, (sig_t)intr); 454 (void)xsignal(SIGPIPE, (sig_t)lostpeer); 455 } 456 for (;;) { 457 cmdscanner(top); 458 top = 1; 459 } 460 } 461 462 void 463 intr() 464 { 465 466 alarmtimer(0); 467 longjmp(toplevel, 1); 468 } 469 470 void 471 lostpeer() 472 { 473 474 alarmtimer(0); 475 if (connected) { 476 if (cout != NULL) { 477 (void)shutdown(fileno(cout), 1+1); 478 (void)fclose(cout); 479 cout = NULL; 480 } 481 if (data >= 0) { 482 (void)shutdown(data, 1+1); 483 (void)close(data); 484 data = -1; 485 } 486 connected = 0; 487 } 488 pswitch(1); 489 if (connected) { 490 if (cout != NULL) { 491 (void)shutdown(fileno(cout), 1+1); 492 (void)fclose(cout); 493 cout = NULL; 494 } 495 connected = 0; 496 } 497 proxflag = 0; 498 pswitch(0); 499 } 500 501 /* 502 * Generate a prompt 503 */ 504 char * 505 prompt() 506 { 507 return ("ftp> "); 508 } 509 510 /* 511 * Command parser. 512 */ 513 void 514 cmdscanner(top) 515 int top; 516 { 517 struct cmd *c; 518 int num; 519 520 if (!top 521 #ifndef NO_EDITCOMPLETE 522 && !editing 523 #endif /* !NO_EDITCOMPLETE */ 524 ) 525 (void)putc('\n', ttyout); 526 for (;;) { 527 #ifndef NO_EDITCOMPLETE 528 if (!editing) { 529 #endif /* !NO_EDITCOMPLETE */ 530 if (fromatty) { 531 fputs(prompt(), ttyout); 532 (void)fflush(ttyout); 533 } 534 if (fgets(line, sizeof(line), stdin) == NULL) 535 quit(0, 0); 536 num = strlen(line); 537 if (num == 0) 538 break; 539 if (line[--num] == '\n') { 540 if (num == 0) 541 break; 542 line[num] = '\0'; 543 } else if (num == sizeof(line) - 2) { 544 fputs("sorry, input line too long.\n", ttyout); 545 while ((num = getchar()) != '\n' && num != EOF) 546 /* void */; 547 break; 548 } /* else it was a line without a newline */ 549 #ifndef NO_EDITCOMPLETE 550 } else { 551 const char *buf; 552 HistEvent ev; 553 cursor_pos = NULL; 554 555 if ((buf = el_gets(el, &num)) == NULL || num == 0) 556 quit(0, 0); 557 if (buf[--num] == '\n') { 558 if (num == 0) 559 break; 560 } else if (num >= sizeof(line)) { 561 fputs("sorry, input line too long.\n", ttyout); 562 break; 563 } 564 memcpy(line, buf, num); 565 line[num] = '\0'; 566 history(hist, &ev, H_ENTER, buf); 567 } 568 #endif /* !NO_EDITCOMPLETE */ 569 570 makeargv(); 571 if (margc == 0) 572 continue; 573 c = getcmd(margv[0]); 574 if (c == (struct cmd *)-1) { 575 fputs("?Ambiguous command.\n", ttyout); 576 continue; 577 } 578 if (c == NULL) { 579 #if !defined(NO_EDITCOMPLETE) 580 /* 581 * attempt to el_parse() unknown commands. 582 * any command containing a ':' would be parsed 583 * as "[prog:]cmd ...", and will result in a 584 * false positive if prog != "ftp", so treat 585 * such commands as invalid. 586 */ 587 if (strchr(margv[0], ':') != NULL || 588 el_parse(el, margc, margv) != 0) 589 #endif /* !NO_EDITCOMPLETE */ 590 fputs("?Invalid command.\n", ttyout); 591 continue; 592 } 593 if (c->c_conn && !connected) { 594 fputs("Not connected.\n", ttyout); 595 continue; 596 } 597 confirmrest = 0; 598 (*c->c_handler)(margc, margv); 599 if (bell && c->c_bell) 600 (void)putc('\007', ttyout); 601 if (c->c_handler != help) 602 break; 603 } 604 (void)xsignal(SIGINT, (sig_t)intr); 605 (void)xsignal(SIGPIPE, (sig_t)lostpeer); 606 } 607 608 struct cmd * 609 getcmd(name) 610 const char *name; 611 { 612 const char *p, *q; 613 struct cmd *c, *found; 614 int nmatches, longest; 615 616 if (name == NULL) 617 return (0); 618 619 longest = 0; 620 nmatches = 0; 621 found = 0; 622 for (c = cmdtab; (p = c->c_name) != NULL; c++) { 623 for (q = name; *q == *p++; q++) 624 if (*q == 0) /* exact match? */ 625 return (c); 626 if (!*q) { /* the name was a prefix */ 627 if (q - name > longest) { 628 longest = q - name; 629 nmatches = 1; 630 found = c; 631 } else if (q - name == longest) 632 nmatches++; 633 } 634 } 635 if (nmatches > 1) 636 return ((struct cmd *)-1); 637 return (found); 638 } 639 640 /* 641 * Slice a string up into argc/argv. 642 */ 643 644 int slrflag; 645 646 void 647 makeargv() 648 { 649 char *argp; 650 651 stringbase = line; /* scan from first of buffer */ 652 argbase = argbuf; /* store from first of buffer */ 653 slrflag = 0; 654 marg_sl->sl_cur = 0; /* reset to start of marg_sl */ 655 for (margc = 0; ; margc++) { 656 argp = slurpstring(); 657 sl_add(marg_sl, argp); 658 if (argp == NULL) 659 break; 660 } 661 #ifndef NO_EDITCOMPLETE 662 if (cursor_pos == line) { 663 cursor_argc = 0; 664 cursor_argo = 0; 665 } else if (cursor_pos != NULL) { 666 cursor_argc = margc; 667 cursor_argo = strlen(margv[margc-1]); 668 } 669 #endif /* !NO_EDITCOMPLETE */ 670 } 671 672 #ifdef NO_EDITCOMPLETE 673 #define INC_CHKCURSOR(x) (x)++ 674 #else /* !NO_EDITCOMPLETE */ 675 #define INC_CHKCURSOR(x) { (x)++ ; \ 676 if (x == cursor_pos) { \ 677 cursor_argc = margc; \ 678 cursor_argo = ap-argbase; \ 679 cursor_pos = NULL; \ 680 } } 681 682 #endif /* !NO_EDITCOMPLETE */ 683 684 /* 685 * Parse string into argbuf; 686 * implemented with FSM to 687 * handle quoting and strings 688 */ 689 char * 690 slurpstring() 691 { 692 int got_one = 0; 693 char *sb = stringbase; 694 char *ap = argbase; 695 char *tmp = argbase; /* will return this if token found */ 696 697 if (*sb == '!' || *sb == '$') { /* recognize ! as a token for shell */ 698 switch (slrflag) { /* and $ as token for macro invoke */ 699 case 0: 700 slrflag++; 701 INC_CHKCURSOR(stringbase); 702 return ((*sb == '!') ? "!" : "$"); 703 /* NOTREACHED */ 704 case 1: 705 slrflag++; 706 altarg = stringbase; 707 break; 708 default: 709 break; 710 } 711 } 712 713 S0: 714 switch (*sb) { 715 716 case '\0': 717 goto OUT; 718 719 case ' ': 720 case '\t': 721 INC_CHKCURSOR(sb); 722 goto S0; 723 724 default: 725 switch (slrflag) { 726 case 0: 727 slrflag++; 728 break; 729 case 1: 730 slrflag++; 731 altarg = sb; 732 break; 733 default: 734 break; 735 } 736 goto S1; 737 } 738 739 S1: 740 switch (*sb) { 741 742 case ' ': 743 case '\t': 744 case '\0': 745 goto OUT; /* end of token */ 746 747 case '\\': 748 INC_CHKCURSOR(sb); 749 goto S2; /* slurp next character */ 750 751 case '"': 752 INC_CHKCURSOR(sb); 753 goto S3; /* slurp quoted string */ 754 755 default: 756 *ap = *sb; /* add character to token */ 757 ap++; 758 INC_CHKCURSOR(sb); 759 got_one = 1; 760 goto S1; 761 } 762 763 S2: 764 switch (*sb) { 765 766 case '\0': 767 goto OUT; 768 769 default: 770 *ap = *sb; 771 ap++; 772 INC_CHKCURSOR(sb); 773 got_one = 1; 774 goto S1; 775 } 776 777 S3: 778 switch (*sb) { 779 780 case '\0': 781 goto OUT; 782 783 case '"': 784 INC_CHKCURSOR(sb); 785 goto S1; 786 787 default: 788 *ap = *sb; 789 ap++; 790 INC_CHKCURSOR(sb); 791 got_one = 1; 792 goto S3; 793 } 794 795 OUT: 796 if (got_one) 797 *ap++ = '\0'; 798 argbase = ap; /* update storage pointer */ 799 stringbase = sb; /* update scan pointer */ 800 if (got_one) { 801 return (tmp); 802 } 803 switch (slrflag) { 804 case 0: 805 slrflag++; 806 break; 807 case 1: 808 slrflag++; 809 altarg = NULL; 810 break; 811 default: 812 break; 813 } 814 return (NULL); 815 } 816 817 /* 818 * Help command. 819 * Call each command handler with argc == 0 and argv[0] == name. 820 */ 821 void 822 help(argc, argv) 823 int argc; 824 char *argv[]; 825 { 826 struct cmd *c; 827 828 if (argc == 1) { 829 StringList *buf; 830 831 buf = sl_init(); 832 fprintf(ttyout, 833 "%sommands may be abbreviated. Commands are:\n\n", 834 proxy ? "Proxy c" : "C"); 835 for (c = cmdtab; c < &cmdtab[NCMDS]; c++) 836 if (c->c_name && (!proxy || c->c_proxy)) 837 sl_add(buf, c->c_name); 838 list_vertical(buf); 839 sl_free(buf, 0); 840 return; 841 } 842 843 #define HELPINDENT ((int) sizeof("disconnect")) 844 845 while (--argc > 0) { 846 char *arg; 847 848 arg = *++argv; 849 c = getcmd(arg); 850 if (c == (struct cmd *)-1) 851 fprintf(ttyout, "?Ambiguous help command %s\n", arg); 852 else if (c == NULL) 853 fprintf(ttyout, "?Invalid help command %s\n", arg); 854 else 855 fprintf(ttyout, "%-*s\t%s\n", HELPINDENT, 856 c->c_name, c->c_help); 857 } 858 } 859 860 void 861 usage() 862 { 863 (void)fprintf(stderr, 864 "usage: %s [-AadefginpRtvV] [-r retry] [-o outfile] [-P port] [-T dir,max[,inc]\n" 865 " [host [port]] [file:///file] [ftp://[user[:pass]@]host[:port]/path[/]]\n" 866 " [http://[user[:pass]@]host[:port]/path] [host:path[/]]\n", __progname); 867 exit(1); 868 } 869
Indexes created Fri Sep 26 08:10:20 GMT 2025