main.c revision 1.64
1 /* $NetBSD: main.c,v 1.64 1999/10/13 02:47:54 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 1.64 1999/10/13 02:47:54 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 <errno.h> 123 #include <netdb.h> 124 #include <paths.h> 125 #include <pwd.h> 126 #include <stdio.h> 127 #include <stdlib.h> 128 #include <string.h> 129 #include <unistd.h> 130 131 #define GLOBAL /* force GLOBAL decls in ftp_var.h to be declared */ 132 #include "ftp_var.h" 133 134 #define FTP_PROXY "ftp_proxy" /* env var with FTP proxy location */ 135 #define HTTP_PROXY "http_proxy" /* env var with HTTP proxy location */ 136 #define NO_PROXY "no_proxy" /* env var with list of non-proxied 137 * hosts, comma or space separated */ 138 139 int main __P((int, char **)); 140 141 int 142 main(argc, argv) 143 int argc; 144 char *argv[]; 145 { 146 int ch, rval; 147 struct passwd *pw = NULL; 148 char *cp, *ep; 149 int dumbterm, s, len; 150 151 ftpport = "ftp"; 152 httpport = "http"; 153 ftpproxy = getenv(FTP_PROXY); 154 httpproxy = getenv(HTTP_PROXY); 155 no_proxy = getenv(NO_PROXY); 156 gateport = NULL; 157 cp = getenv("FTPSERVERPORT"); 158 if (cp != NULL) 159 gateport = cp; 160 else 161 gateport = "ftpgate"; 162 doglob = 1; 163 interactive = 1; 164 autologin = 1; 165 passivemode = 1; 166 activefallback = 1; 167 preserve = 1; 168 verbose = 0; 169 progress = 0; 170 gatemode = 0; 171 data = -1; 172 outfile = NULL; 173 restartautofetch = 0; 174 #ifndef NO_EDITCOMPLETE 175 editing = 0; 176 el = NULL; 177 hist = NULL; 178 #endif 179 bytes = 0; 180 mark = HASHBYTES; 181 rate_get = 0; 182 rate_get_incr = DEFAULTINCR; 183 rate_put = 0; 184 rate_put_incr = DEFAULTINCR; 185 #ifdef INET6 186 epsv4 = 1; 187 #else 188 epsv4 = 0; 189 #endif 190 epsv4bad = 0; 191 192 /* 193 * Get the default socket buffer sizes if we don't already have them. 194 * It doesn't matter which socket we do this to, because on the first 195 * call no socket buffer sizes will have been modified, so we are 196 * guaranteed to get the system defaults. 197 */ 198 s = socket(AF_INET, SOCK_STREAM, 0); 199 if (s == -1) 200 err(1, "can't create socket"); 201 len = sizeof(rcvbuf_size); 202 if (getsockopt(s, SOL_SOCKET, SO_RCVBUF, (void *) &rcvbuf_size, &len) 203 < 0) 204 err(1, "unable to get default rcvbuf size"); 205 len = sizeof(sndbuf_size); 206 if (getsockopt(s, SOL_SOCKET, SO_SNDBUF, (void *) &sndbuf_size, &len) 207 < 0) 208 err(1, "unable to get default sndbuf size"); 209 (void)close(s); 210 /* sanity check returned buffer sizes */ 211 if (rcvbuf_size <= 0) 212 rcvbuf_size = 8192; 213 if (sndbuf_size <= 0) 214 sndbuf_size = 8192; 215 216 marg_sl = sl_init(); 217 if ((tmpdir = getenv("TMPDIR")) == NULL) 218 tmpdir = _PATH_TMP; 219 220 /* Set default operation mode based on FTPMODE environment variable */ 221 if ((cp = getenv("FTPMODE")) != NULL) { 222 if (strcmp(cp, "passive") == 0) { 223 passivemode = 1; 224 activefallback = 0; 225 } else if (strcmp(cp, "active") == 0) { 226 passivemode = 0; 227 activefallback = 0; 228 } else if (strcmp(cp, "gate") == 0) { 229 gatemode = 1; 230 } else if (strcmp(cp, "auto") == 0) { 231 passivemode = 1; 232 activefallback = 1; 233 } else 234 warnx("unknown $FTPMODE '%s'; using defaults", cp); 235 } 236 237 if (strcmp(__progname, "pftp") == 0) { 238 passivemode = 1; 239 activefallback = 0; 240 } else if (strcmp(__progname, "gate-ftp") == 0) 241 gatemode = 1; 242 243 gateserver = getenv("FTPSERVER"); 244 if (gateserver == NULL || *gateserver == '\0') 245 gateserver = GATE_SERVER; 246 if (gatemode) { 247 if (*gateserver == '\0') { 248 warnx( 249 "Neither $FTPSERVER nor GATE_SERVER is defined; disabling gate-ftp"); 250 gatemode = 0; 251 } 252 } 253 254 cp = getenv("TERM"); 255 if (cp == NULL || strcmp(cp, "dumb") == 0) 256 dumbterm = 1; 257 else 258 dumbterm = 0; 259 fromatty = isatty(fileno(stdin)); 260 ttyout = stdout; 261 if (isatty(fileno(ttyout))) { 262 verbose = 1; /* verbose if to a tty */ 263 if (! dumbterm) { 264 #ifndef NO_EDITCOMPLETE 265 if (fromatty) /* editing mode on if tty is usable */ 266 editing = 1; 267 #endif 268 #ifndef NO_PROGRESS 269 if (foregroundproc()) 270 progress = 1; /* progress bar on if fg */ 271 #endif 272 } 273 } 274 275 while ((ch = getopt(argc, argv, "Aadefgino:pP:r:RtT:vV")) != -1) { 276 switch (ch) { 277 case 'A': 278 activefallback = 0; 279 passivemode = 0; 280 break; 281 282 case 'a': 283 anonftp = 1; 284 break; 285 286 case 'd': 287 options |= SO_DEBUG; 288 debug++; 289 break; 290 291 case 'e': 292 #ifndef NO_EDITCOMPLETE 293 editing = 0; 294 #endif 295 break; 296 297 case 'f': 298 flushcache = 1; 299 break; 300 301 case 'g': 302 doglob = 0; 303 break; 304 305 case 'i': 306 interactive = 0; 307 break; 308 309 case 'n': 310 autologin = 0; 311 break; 312 313 case 'o': 314 outfile = optarg; 315 if (strcmp(outfile, "-") == 0) 316 ttyout = stderr; 317 break; 318 319 case 'p': 320 passivemode = 1; 321 activefallback = 0; 322 break; 323 324 case 'P': 325 ftpport = optarg; 326 break; 327 328 case 'r': 329 retry_connect = strtol(optarg, &ep, 10); 330 if (retry_connect < 1 || *ep != '\0') 331 errx(1, "bad retry value: %s", optarg); 332 break; 333 334 case 'R': 335 restartautofetch = 1; 336 break; 337 338 case 't': 339 trace = 1; 340 break; 341 342 case 'T': 343 { 344 int targc; 345 char *targv[6], *oac; 346 347 /* look for `dir,max[,incr]' */ 348 targc = 0; 349 targv[targc++] = "-T"; 350 oac = xstrdup(optarg); 351 352 while ((cp = strsep(&oac, ",")) != NULL) { 353 if (*cp == '\0') { 354 warnx("bad throttle value: %s", optarg); 355 usage(); 356 /* NOTREACHED */ 357 } 358 targv[targc++] = cp; 359 if (targc >= 5) 360 break; 361 } 362 if (parserate(targc, targv, 1) == -1) 363 usage(); 364 free(oac); 365 break; 366 } 367 368 case 'v': 369 progress = verbose = 1; 370 break; 371 372 case 'V': 373 progress = verbose = 0; 374 break; 375 376 default: 377 usage(); 378 } 379 } 380 /* set line buffering on ttyout */ 381 setvbuf(ttyout, NULL, _IOLBF, 0); 382 argc -= optind; 383 argv += optind; 384 385 cpend = 0; /* no pending replies */ 386 proxy = 0; /* proxy not active */ 387 crflag = 1; /* strip c.r. on ascii gets */ 388 sendport = -1; /* not using ports */ 389 /* 390 * Set up the home directory in case we're globbing. 391 */ 392 cp = getlogin(); 393 if (cp != NULL) { 394 pw = getpwnam(cp); 395 } 396 if (pw == NULL) 397 pw = getpwuid(getuid()); 398 if (pw != NULL) 399 (void)strlcpy(home, pw->pw_dir, sizeof(home)); 400 else 401 (void)strlcpy(home, "/", sizeof(home)); 402 403 setttywidth(0); 404 #ifdef SIGINFO 405 (void)xsignal(SIGINFO, psummary); 406 #endif 407 (void)xsignal(SIGQUIT, psummary); 408 (void)xsignal(SIGUSR1, crankrate); 409 (void)xsignal(SIGUSR2, crankrate); 410 (void)xsignal(SIGWINCH, setttywidth); 411 412 #ifdef __GNUC__ /* to shut up gcc warnings */ 413 (void)&argc; 414 (void)&argv; 415 #endif 416 417 if (argc > 0) { 418 if (strchr(argv[0], ':') != NULL && ! isipv6addr(argv[0])) { 419 rval = auto_fetch(argc, argv); 420 if (rval >= 0) /* -1 == connected and cd-ed */ 421 exit(rval); 422 } else { 423 char *xargv[5]; 424 425 if (sigsetjmp(toplevel, 1)) 426 exit(0); 427 (void)xsignal(SIGINT, intr); 428 (void)xsignal(SIGPIPE, (sig_t)lostpeer); 429 xargv[0] = __progname; 430 xargv[1] = argv[0]; 431 xargv[2] = argv[1]; 432 xargv[3] = argv[2]; 433 xargv[4] = NULL; 434 do { 435 setpeer(argc+1, xargv); 436 if (!retry_connect) 437 break; 438 if (!connected) { 439 macnum = 0; 440 fprintf(ttyout, 441 "Retrying in %d seconds...\n", 442 retry_connect); 443 sleep(retry_connect); 444 } 445 } while (!connected); 446 retry_connect = 0; /* connected, stop hiding msgs */ 447 } 448 } 449 #ifndef NO_EDITCOMPLETE 450 controlediting(); 451 #endif /* !NO_EDITCOMPLETE */ 452 453 (void)sigsetjmp(toplevel, 1); 454 (void)xsignal(SIGINT, intr); 455 (void)xsignal(SIGPIPE, (sig_t)lostpeer); 456 for (;;) 457 cmdscanner(); 458 } 459 460 void 461 intr(dummy) 462 int dummy; 463 { 464 465 alarmtimer(0); 466 if (fromatty) 467 write(fileno(ttyout), "\n", 1); 468 siglongjmp(toplevel, 1); 469 } 470 471 void 472 lostpeer() 473 { 474 int oerrno = errno; 475 476 alarmtimer(0); 477 if (connected) { 478 if (cout != NULL) { 479 (void)shutdown(fileno(cout), 1+1); 480 (void)fclose(cout); 481 cout = NULL; 482 } 483 if (data >= 0) { 484 (void)shutdown(data, 1+1); 485 (void)close(data); 486 data = -1; 487 } 488 connected = 0; 489 } 490 pswitch(1); 491 if (connected) { 492 if (cout != NULL) { 493 (void)shutdown(fileno(cout), 1+1); 494 (void)fclose(cout); 495 cout = NULL; 496 } 497 connected = 0; 498 } 499 proxflag = 0; 500 pswitch(0); 501 errno = oerrno; 502 } 503 504 /* 505 * Generate a prompt 506 */ 507 char * 508 prompt() 509 { 510 return ("ftp> "); 511 } 512 513 /* 514 * Command parser. 515 */ 516 void 517 cmdscanner() 518 { 519 struct cmd *c; 520 int num; 521 522 for (;;) { 523 #ifndef NO_EDITCOMPLETE 524 if (!editing) { 525 #endif /* !NO_EDITCOMPLETE */ 526 if (fromatty) { 527 fputs(prompt(), ttyout); 528 (void)fflush(ttyout); 529 } 530 if (fgets(line, sizeof(line), stdin) == NULL) { 531 if (fromatty) 532 putc('\n', ttyout); 533 quit(0, 0); 534 } 535 num = strlen(line); 536 if (num == 0) 537 break; 538 if (line[--num] == '\n') { 539 if (num == 0) 540 break; 541 line[num] = '\0'; 542 } else if (num == sizeof(line) - 2) { 543 fputs("sorry, input line too long.\n", ttyout); 544 while ((num = getchar()) != '\n' && num != EOF) 545 /* void */; 546 break; 547 } /* else it was a line without a newline */ 548 #ifndef NO_EDITCOMPLETE 549 } else { 550 const char *buf; 551 HistEvent ev; 552 cursor_pos = NULL; 553 554 if ((buf = el_gets(el, &num)) == NULL || num == 0) { 555 if (fromatty) 556 putc('\n', ttyout); 557 quit(0, 0); 558 } 559 if (buf[--num] == '\n') { 560 if (num == 0) 561 break; 562 } else if (num >= sizeof(line)) { 563 fputs("sorry, input line too long.\n", ttyout); 564 break; 565 } 566 memcpy(line, buf, num); 567 line[num] = '\0'; 568 history(hist, &ev, H_ENTER, buf); 569 } 570 #endif /* !NO_EDITCOMPLETE */ 571 572 makeargv(); 573 if (margc == 0) 574 continue; 575 c = getcmd(margv[0]); 576 if (c == (struct cmd *)-1) { 577 fputs("?Ambiguous command.\n", ttyout); 578 continue; 579 } 580 if (c == NULL) { 581 #if !defined(NO_EDITCOMPLETE) 582 /* 583 * attempt to el_parse() unknown commands. 584 * any command containing a ':' would be parsed 585 * as "[prog:]cmd ...", and will result in a 586 * false positive if prog != "ftp", so treat 587 * such commands as invalid. 588 */ 589 if (strchr(margv[0], ':') != NULL || 590 el_parse(el, margc, margv) != 0) 591 #endif /* !NO_EDITCOMPLETE */ 592 fputs("?Invalid command.\n", ttyout); 593 continue; 594 } 595 if (c->c_conn && !connected) { 596 fputs("Not connected.\n", ttyout); 597 continue; 598 } 599 confirmrest = 0; 600 (*c->c_handler)(margc, margv); 601 if (bell && c->c_bell) 602 (void)putc('\007', ttyout); 603 if (c->c_handler != help) 604 break; 605 } 606 (void)xsignal(SIGINT, intr); 607 (void)xsignal(SIGPIPE, (sig_t)lostpeer); 608 } 609 610 struct cmd * 611 getcmd(name) 612 const char *name; 613 { 614 const char *p, *q; 615 struct cmd *c, *found; 616 int nmatches, longest; 617 618 if (name == NULL) 619 return (0); 620 621 longest = 0; 622 nmatches = 0; 623 found = 0; 624 for (c = cmdtab; (p = c->c_name) != NULL; c++) { 625 for (q = name; *q == *p++; q++) 626 if (*q == 0) /* exact match? */ 627 return (c); 628 if (!*q) { /* the name was a prefix */ 629 if (q - name > longest) { 630 longest = q - name; 631 nmatches = 1; 632 found = c; 633 } else if (q - name == longest) 634 nmatches++; 635 } 636 } 637 if (nmatches > 1) 638 return ((struct cmd *)-1); 639 return (found); 640 } 641 642 /* 643 * Slice a string up into argc/argv. 644 */ 645 646 int slrflag; 647 648 void 649 makeargv() 650 { 651 char *argp; 652 653 stringbase = line; /* scan from first of buffer */ 654 argbase = argbuf; /* store from first of buffer */ 655 slrflag = 0; 656 marg_sl->sl_cur = 0; /* reset to start of marg_sl */ 657 for (margc = 0; ; margc++) { 658 argp = slurpstring(); 659 sl_add(marg_sl, argp); 660 if (argp == NULL) 661 break; 662 } 663 #ifndef NO_EDITCOMPLETE 664 if (cursor_pos == line) { 665 cursor_argc = 0; 666 cursor_argo = 0; 667 } else if (cursor_pos != NULL) { 668 cursor_argc = margc; 669 cursor_argo = strlen(margv[margc-1]); 670 } 671 #endif /* !NO_EDITCOMPLETE */ 672 } 673 674 #ifdef NO_EDITCOMPLETE 675 #define INC_CHKCURSOR(x) (x)++ 676 #else /* !NO_EDITCOMPLETE */ 677 #define INC_CHKCURSOR(x) { (x)++ ; \ 678 if (x == cursor_pos) { \ 679 cursor_argc = margc; \ 680 cursor_argo = ap-argbase; \ 681 cursor_pos = NULL; \ 682 } } 683 684 #endif /* !NO_EDITCOMPLETE */ 685 686 /* 687 * Parse string into argbuf; 688 * implemented with FSM to 689 * handle quoting and strings 690 */ 691 char * 692 slurpstring() 693 { 694 int got_one = 0; 695 char *sb = stringbase; 696 char *ap = argbase; 697 char *tmp = argbase; /* will return this if token found */ 698 699 if (*sb == '!' || *sb == '$') { /* recognize ! as a token for shell */ 700 switch (slrflag) { /* and $ as token for macro invoke */ 701 case 0: 702 slrflag++; 703 INC_CHKCURSOR(stringbase); 704 return ((*sb == '!') ? "!" : "$"); 705 /* NOTREACHED */ 706 case 1: 707 slrflag++; 708 altarg = stringbase; 709 break; 710 default: 711 break; 712 } 713 } 714 715 S0: 716 switch (*sb) { 717 718 case '\0': 719 goto OUT; 720 721 case ' ': 722 case '\t': 723 INC_CHKCURSOR(sb); 724 goto S0; 725 726 default: 727 switch (slrflag) { 728 case 0: 729 slrflag++; 730 break; 731 case 1: 732 slrflag++; 733 altarg = sb; 734 break; 735 default: 736 break; 737 } 738 goto S1; 739 } 740 741 S1: 742 switch (*sb) { 743 744 case ' ': 745 case '\t': 746 case '\0': 747 goto OUT; /* end of token */ 748 749 case '\\': 750 INC_CHKCURSOR(sb); 751 goto S2; /* slurp next character */ 752 753 case '"': 754 INC_CHKCURSOR(sb); 755 goto S3; /* slurp quoted string */ 756 757 default: 758 *ap = *sb; /* add character to token */ 759 ap++; 760 INC_CHKCURSOR(sb); 761 got_one = 1; 762 goto S1; 763 } 764 765 S2: 766 switch (*sb) { 767 768 case '\0': 769 goto OUT; 770 771 default: 772 *ap = *sb; 773 ap++; 774 INC_CHKCURSOR(sb); 775 got_one = 1; 776 goto S1; 777 } 778 779 S3: 780 switch (*sb) { 781 782 case '\0': 783 goto OUT; 784 785 case '"': 786 INC_CHKCURSOR(sb); 787 goto S1; 788 789 default: 790 *ap = *sb; 791 ap++; 792 INC_CHKCURSOR(sb); 793 got_one = 1; 794 goto S3; 795 } 796 797 OUT: 798 if (got_one) 799 *ap++ = '\0'; 800 argbase = ap; /* update storage pointer */ 801 stringbase = sb; /* update scan pointer */ 802 if (got_one) { 803 return (tmp); 804 } 805 switch (slrflag) { 806 case 0: 807 slrflag++; 808 break; 809 case 1: 810 slrflag++; 811 altarg = NULL; 812 break; 813 default: 814 break; 815 } 816 return (NULL); 817 } 818 819 /* 820 * Help command. 821 * Call each command handler with argc == 0 and argv[0] == name. 822 */ 823 void 824 help(argc, argv) 825 int argc; 826 char *argv[]; 827 { 828 struct cmd *c; 829 830 if (argc == 1) { 831 StringList *buf; 832 833 buf = sl_init(); 834 fprintf(ttyout, 835 "%sommands may be abbreviated. Commands are:\n\n", 836 proxy ? "Proxy c" : "C"); 837 for (c = cmdtab; c < &cmdtab[NCMDS]; c++) 838 if (c->c_name && (!proxy || c->c_proxy)) 839 sl_add(buf, c->c_name); 840 list_vertical(buf); 841 sl_free(buf, 0); 842 return; 843 } 844 845 #define HELPINDENT ((int) sizeof("disconnect")) 846 847 while (--argc > 0) { 848 char *arg; 849 850 arg = *++argv; 851 c = getcmd(arg); 852 if (c == (struct cmd *)-1) 853 fprintf(ttyout, "?Ambiguous help command %s\n", arg); 854 else if (c == NULL) 855 fprintf(ttyout, "?Invalid help command %s\n", arg); 856 else 857 fprintf(ttyout, "%-*s\t%s\n", HELPINDENT, 858 c->c_name, c->c_help); 859 } 860 } 861 862 void 863 usage() 864 { 865 (void)fprintf(stderr, 866 "usage: %s [-AadefginpRtvV] [-r retry] [-o outfile] [-P port] [-T dir,max[,inc]\n" 867 " [host [port]] [file:///file] [ftp://[user[:pass]@]host[:port]/path[/]]\n" 868 " [http://[user[:pass]@]host[:port]/path] [host:path[/]]\n", __progname); 869 exit(1); 870 } 871
Indexes created Thu Sep 25 16:09:42 GMT 2025