main.c revision 1.61
1 /* $NetBSD: main.c,v 1.61 1999/10/09 03:00:56 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 1.61 1999/10/09 03:00:56 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, top, 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 top = sigsetjmp(toplevel, 1) == 0; 453 if (top) { 454 (void)xsignal(SIGINT, intr); 455 (void)xsignal(SIGPIPE, (sig_t)lostpeer); 456 } 457 for (;;) { 458 cmdscanner(top); 459 top = 1; 460 } 461 } 462 463 void 464 intr(dummy) 465 int dummy; 466 { 467 468 alarmtimer(0); 469 siglongjmp(toplevel, 1); 470 } 471 472 void 473 lostpeer() 474 { 475 int oerrno = errno; 476 477 alarmtimer(0); 478 if (connected) { 479 if (cout != NULL) { 480 (void)shutdown(fileno(cout), 1+1); 481 (void)fclose(cout); 482 cout = NULL; 483 } 484 if (data >= 0) { 485 (void)shutdown(data, 1+1); 486 (void)close(data); 487 data = -1; 488 } 489 connected = 0; 490 } 491 pswitch(1); 492 if (connected) { 493 if (cout != NULL) { 494 (void)shutdown(fileno(cout), 1+1); 495 (void)fclose(cout); 496 cout = NULL; 497 } 498 connected = 0; 499 } 500 proxflag = 0; 501 pswitch(0); 502 errno = oerrno; 503 } 504 505 /* 506 * Generate a prompt 507 */ 508 char * 509 prompt() 510 { 511 return ("ftp> "); 512 } 513 514 /* 515 * Command parser. 516 */ 517 void 518 cmdscanner(top) 519 int top; 520 { 521 struct cmd *c; 522 int num; 523 524 if (!top 525 #ifndef NO_EDITCOMPLETE 526 && !editing 527 #endif /* !NO_EDITCOMPLETE */ 528 ) 529 (void)putc('\n', ttyout); 530 for (;;) { 531 #ifndef NO_EDITCOMPLETE 532 if (!editing) { 533 #endif /* !NO_EDITCOMPLETE */ 534 if (fromatty) { 535 fputs(prompt(), ttyout); 536 (void)fflush(ttyout); 537 } 538 if (fgets(line, sizeof(line), stdin) == NULL) 539 quit(0, 0); 540 num = strlen(line); 541 if (num == 0) 542 break; 543 if (line[--num] == '\n') { 544 if (num == 0) 545 break; 546 line[num] = '\0'; 547 } else if (num == sizeof(line) - 2) { 548 fputs("sorry, input line too long.\n", ttyout); 549 while ((num = getchar()) != '\n' && num != EOF) 550 /* void */; 551 break; 552 } /* else it was a line without a newline */ 553 #ifndef NO_EDITCOMPLETE 554 } else { 555 const char *buf; 556 HistEvent ev; 557 cursor_pos = NULL; 558 559 if ((buf = el_gets(el, &num)) == NULL || num == 0) 560 quit(0, 0); 561 if (buf[--num] == '\n') { 562 if (num == 0) 563 break; 564 } else if (num >= sizeof(line)) { 565 fputs("sorry, input line too long.\n", ttyout); 566 break; 567 } 568 memcpy(line, buf, num); 569 line[num] = '\0'; 570 history(hist, &ev, H_ENTER, buf); 571 } 572 #endif /* !NO_EDITCOMPLETE */ 573 574 makeargv(); 575 if (margc == 0) 576 continue; 577 c = getcmd(margv[0]); 578 if (c == (struct cmd *)-1) { 579 fputs("?Ambiguous command.\n", ttyout); 580 continue; 581 } 582 if (c == NULL) { 583 #if !defined(NO_EDITCOMPLETE) 584 /* 585 * attempt to el_parse() unknown commands. 586 * any command containing a ':' would be parsed 587 * as "[prog:]cmd ...", and will result in a 588 * false positive if prog != "ftp", so treat 589 * such commands as invalid. 590 */ 591 if (strchr(margv[0], ':') != NULL || 592 el_parse(el, margc, margv) != 0) 593 #endif /* !NO_EDITCOMPLETE */ 594 fputs("?Invalid command.\n", ttyout); 595 continue; 596 } 597 if (c->c_conn && !connected) { 598 fputs("Not connected.\n", ttyout); 599 continue; 600 } 601 confirmrest = 0; 602 (*c->c_handler)(margc, margv); 603 if (bell && c->c_bell) 604 (void)putc('\007', ttyout); 605 if (c->c_handler != help) 606 break; 607 } 608 (void)xsignal(SIGINT, intr); 609 (void)xsignal(SIGPIPE, (sig_t)lostpeer); 610 } 611 612 struct cmd * 613 getcmd(name) 614 const char *name; 615 { 616 const char *p, *q; 617 struct cmd *c, *found; 618 int nmatches, longest; 619 620 if (name == NULL) 621 return (0); 622 623 longest = 0; 624 nmatches = 0; 625 found = 0; 626 for (c = cmdtab; (p = c->c_name) != NULL; c++) { 627 for (q = name; *q == *p++; q++) 628 if (*q == 0) /* exact match? */ 629 return (c); 630 if (!*q) { /* the name was a prefix */ 631 if (q - name > longest) { 632 longest = q - name; 633 nmatches = 1; 634 found = c; 635 } else if (q - name == longest) 636 nmatches++; 637 } 638 } 639 if (nmatches > 1) 640 return ((struct cmd *)-1); 641 return (found); 642 } 643 644 /* 645 * Slice a string up into argc/argv. 646 */ 647 648 int slrflag; 649 650 void 651 makeargv() 652 { 653 char *argp; 654 655 stringbase = line; /* scan from first of buffer */ 656 argbase = argbuf; /* store from first of buffer */ 657 slrflag = 0; 658 marg_sl->sl_cur = 0; /* reset to start of marg_sl */ 659 for (margc = 0; ; margc++) { 660 argp = slurpstring(); 661 sl_add(marg_sl, argp); 662 if (argp == NULL) 663 break; 664 } 665 #ifndef NO_EDITCOMPLETE 666 if (cursor_pos == line) { 667 cursor_argc = 0; 668 cursor_argo = 0; 669 } else if (cursor_pos != NULL) { 670 cursor_argc = margc; 671 cursor_argo = strlen(margv[margc-1]); 672 } 673 #endif /* !NO_EDITCOMPLETE */ 674 } 675 676 #ifdef NO_EDITCOMPLETE 677 #define INC_CHKCURSOR(x) (x)++ 678 #else /* !NO_EDITCOMPLETE */ 679 #define INC_CHKCURSOR(x) { (x)++ ; \ 680 if (x == cursor_pos) { \ 681 cursor_argc = margc; \ 682 cursor_argo = ap-argbase; \ 683 cursor_pos = NULL; \ 684 } } 685 686 #endif /* !NO_EDITCOMPLETE */ 687 688 /* 689 * Parse string into argbuf; 690 * implemented with FSM to 691 * handle quoting and strings 692 */ 693 char * 694 slurpstring() 695 { 696 int got_one = 0; 697 char *sb = stringbase; 698 char *ap = argbase; 699 char *tmp = argbase; /* will return this if token found */ 700 701 if (*sb == '!' || *sb == '$') { /* recognize ! as a token for shell */ 702 switch (slrflag) { /* and $ as token for macro invoke */ 703 case 0: 704 slrflag++; 705 INC_CHKCURSOR(stringbase); 706 return ((*sb == '!') ? "!" : "$"); 707 /* NOTREACHED */ 708 case 1: 709 slrflag++; 710 altarg = stringbase; 711 break; 712 default: 713 break; 714 } 715 } 716 717 S0: 718 switch (*sb) { 719 720 case '\0': 721 goto OUT; 722 723 case ' ': 724 case '\t': 725 INC_CHKCURSOR(sb); 726 goto S0; 727 728 default: 729 switch (slrflag) { 730 case 0: 731 slrflag++; 732 break; 733 case 1: 734 slrflag++; 735 altarg = sb; 736 break; 737 default: 738 break; 739 } 740 goto S1; 741 } 742 743 S1: 744 switch (*sb) { 745 746 case ' ': 747 case '\t': 748 case '\0': 749 goto OUT; /* end of token */ 750 751 case '\\': 752 INC_CHKCURSOR(sb); 753 goto S2; /* slurp next character */ 754 755 case '"': 756 INC_CHKCURSOR(sb); 757 goto S3; /* slurp quoted string */ 758 759 default: 760 *ap = *sb; /* add character to token */ 761 ap++; 762 INC_CHKCURSOR(sb); 763 got_one = 1; 764 goto S1; 765 } 766 767 S2: 768 switch (*sb) { 769 770 case '\0': 771 goto OUT; 772 773 default: 774 *ap = *sb; 775 ap++; 776 INC_CHKCURSOR(sb); 777 got_one = 1; 778 goto S1; 779 } 780 781 S3: 782 switch (*sb) { 783 784 case '\0': 785 goto OUT; 786 787 case '"': 788 INC_CHKCURSOR(sb); 789 goto S1; 790 791 default: 792 *ap = *sb; 793 ap++; 794 INC_CHKCURSOR(sb); 795 got_one = 1; 796 goto S3; 797 } 798 799 OUT: 800 if (got_one) 801 *ap++ = '\0'; 802 argbase = ap; /* update storage pointer */ 803 stringbase = sb; /* update scan pointer */ 804 if (got_one) { 805 return (tmp); 806 } 807 switch (slrflag) { 808 case 0: 809 slrflag++; 810 break; 811 case 1: 812 slrflag++; 813 altarg = NULL; 814 break; 815 default: 816 break; 817 } 818 return (NULL); 819 } 820 821 /* 822 * Help command. 823 * Call each command handler with argc == 0 and argv[0] == name. 824 */ 825 void 826 help(argc, argv) 827 int argc; 828 char *argv[]; 829 { 830 struct cmd *c; 831 832 if (argc == 1) { 833 StringList *buf; 834 835 buf = sl_init(); 836 fprintf(ttyout, 837 "%sommands may be abbreviated. Commands are:\n\n", 838 proxy ? "Proxy c" : "C"); 839 for (c = cmdtab; c < &cmdtab[NCMDS]; c++) 840 if (c->c_name && (!proxy || c->c_proxy)) 841 sl_add(buf, c->c_name); 842 list_vertical(buf); 843 sl_free(buf, 0); 844 return; 845 } 846 847 #define HELPINDENT ((int) sizeof("disconnect")) 848 849 while (--argc > 0) { 850 char *arg; 851 852 arg = *++argv; 853 c = getcmd(arg); 854 if (c == (struct cmd *)-1) 855 fprintf(ttyout, "?Ambiguous help command %s\n", arg); 856 else if (c == NULL) 857 fprintf(ttyout, "?Invalid help command %s\n", arg); 858 else 859 fprintf(ttyout, "%-*s\t%s\n", HELPINDENT, 860 c->c_name, c->c_help); 861 } 862 } 863 864 void 865 usage() 866 { 867 (void)fprintf(stderr, 868 "usage: %s [-AadefginpRtvV] [-r retry] [-o outfile] [-P port] [-T dir,max[,inc]\n" 869 " [host [port]] [file:///file] [ftp://[user[:pass]@]host[:port]/path[/]]\n" 870 " [http://[user[:pass]@]host[:port]/path] [host:path[/]]\n", __progname); 871 exit(1); 872 } 873
Indexes created Thu Oct 23 22:10:10 GMT 2025