main.c revision 1.59
1 /* $NetBSD: main.c,v 1.59 1999/10/05 01:16:14 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 1.59 1999/10/05 01:16:14 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 mark = HASHBYTES; 179 rate_get = 0; 180 rate_get_incr = DEFAULTINCR; 181 rate_put = 0; 182 rate_put_incr = DEFAULTINCR; 183 #ifdef INET6 184 epsv4 = 1; 185 #else 186 epsv4 = 0; 187 #endif 188 epsv4bad = 0; 189 190 /* 191 * Get the default socket buffer sizes if we don't already have them. 192 * It doesn't matter which socket we do this to, because on the first 193 * call no socket buffer sizes will have been modified, so we are 194 * guaranteed to get the system defaults. 195 */ 196 s = socket(AF_INET, SOCK_STREAM, 0); 197 if (s == -1) 198 err(1, "can't create socket"); 199 len = sizeof(rcvbuf_size); 200 if (getsockopt(s, SOL_SOCKET, SO_RCVBUF, (void *) &rcvbuf_size, &len) 201 < 0) 202 err(1, "unable to get default rcvbuf size"); 203 len = sizeof(sndbuf_size); 204 if (getsockopt(s, SOL_SOCKET, SO_SNDBUF, (void *) &sndbuf_size, &len) 205 < 0) 206 err(1, "unable to get default sndbuf size"); 207 (void)close(s); 208 /* sanity check returned buffer sizes */ 209 if (rcvbuf_size <= 0) 210 rcvbuf_size = 8192; 211 if (sndbuf_size <= 0) 212 sndbuf_size = 8192; 213 214 marg_sl = sl_init(); 215 if ((tmpdir = getenv("TMPDIR")) == NULL) 216 tmpdir = _PATH_TMP; 217 218 /* Set default operation mode based on FTPMODE environment variable */ 219 if ((cp = getenv("FTPMODE")) != NULL) { 220 if (strcmp(cp, "passive") == 0) { 221 passivemode = 1; 222 activefallback = 0; 223 } else if (strcmp(cp, "active") == 0) { 224 passivemode = 0; 225 activefallback = 0; 226 } else if (strcmp(cp, "gate") == 0) { 227 gatemode = 1; 228 } else if (strcmp(cp, "auto") == 0) { 229 passivemode = 1; 230 activefallback = 1; 231 } else 232 warnx("unknown $FTPMODE '%s'; using defaults", cp); 233 } 234 235 if (strcmp(__progname, "pftp") == 0) { 236 passivemode = 1; 237 activefallback = 0; 238 } else if (strcmp(__progname, "gate-ftp") == 0) 239 gatemode = 1; 240 241 gateserver = getenv("FTPSERVER"); 242 if (gateserver == NULL || *gateserver == '\0') 243 gateserver = GATE_SERVER; 244 if (gatemode) { 245 if (*gateserver == '\0') { 246 warnx( 247 "Neither $FTPSERVER nor GATE_SERVER is defined; disabling gate-ftp"); 248 gatemode = 0; 249 } 250 } 251 252 cp = getenv("TERM"); 253 if (cp == NULL || strcmp(cp, "dumb") == 0) 254 dumbterm = 1; 255 else 256 dumbterm = 0; 257 fromatty = isatty(fileno(stdin)); 258 ttyout = stdout; 259 if (isatty(fileno(ttyout))) { 260 verbose = 1; /* verbose if to a tty */ 261 if (! dumbterm) { 262 #ifndef NO_EDITCOMPLETE 263 if (fromatty) /* editing mode on if tty is usable */ 264 editing = 1; 265 #endif 266 #ifndef NO_PROGRESS 267 if (foregroundproc()) 268 progress = 1; /* progress bar on if fg */ 269 #endif 270 } 271 } 272 273 while ((ch = getopt(argc, argv, "Aadefgino:pP:r:RtT:vV")) != -1) { 274 switch (ch) { 275 case 'A': 276 activefallback = 0; 277 passivemode = 0; 278 break; 279 280 case 'a': 281 anonftp = 1; 282 break; 283 284 case 'd': 285 options |= SO_DEBUG; 286 debug++; 287 break; 288 289 case 'e': 290 #ifndef NO_EDITCOMPLETE 291 editing = 0; 292 #endif 293 break; 294 295 case 'f': 296 flushcache = 1; 297 break; 298 299 case 'g': 300 doglob = 0; 301 break; 302 303 case 'i': 304 interactive = 0; 305 break; 306 307 case 'n': 308 autologin = 0; 309 break; 310 311 case 'o': 312 outfile = optarg; 313 if (strcmp(outfile, "-") == 0) 314 ttyout = stderr; 315 break; 316 317 case 'p': 318 passivemode = 1; 319 activefallback = 0; 320 break; 321 322 case 'P': 323 ftpport = optarg; 324 break; 325 326 case 'r': 327 retry_connect = strtol(optarg, &ep, 10); 328 if (retry_connect < 1 || *ep != '\0') 329 errx(1, "bad retry value: %s", optarg); 330 break; 331 332 case 'R': 333 restartautofetch = 1; 334 break; 335 336 case 't': 337 trace = 1; 338 break; 339 340 case 'T': 341 { 342 int targc; 343 char *targv[6], *oac; 344 345 /* look for `dir,max[,incr]' */ 346 targc = 0; 347 targv[targc++] = "-T"; 348 oac = xstrdup(optarg); 349 350 while ((cp = strsep(&oac, ",")) != NULL) { 351 if (*cp == '\0') { 352 warnx("bad throttle value: %s", optarg); 353 usage(); 354 /* NOTREACHED */ 355 } 356 targv[targc++] = cp; 357 if (targc >= 5) 358 break; 359 } 360 if (parserate(targc, targv, 1) == -1) 361 usage(); 362 free(oac); 363 break; 364 } 365 366 case 'v': 367 progress = verbose = 1; 368 break; 369 370 case 'V': 371 progress = verbose = 0; 372 break; 373 374 default: 375 usage(); 376 } 377 } 378 /* set line buffering on ttyout */ 379 setvbuf(ttyout, NULL, _IOLBF, 0); 380 argc -= optind; 381 argv += optind; 382 383 cpend = 0; /* no pending replies */ 384 proxy = 0; /* proxy not active */ 385 crflag = 1; /* strip c.r. on ascii gets */ 386 sendport = -1; /* not using ports */ 387 /* 388 * Set up the home directory in case we're globbing. 389 */ 390 cp = getlogin(); 391 if (cp != NULL) { 392 pw = getpwnam(cp); 393 } 394 if (pw == NULL) 395 pw = getpwuid(getuid()); 396 if (pw != NULL) 397 (void)strlcpy(home, pw->pw_dir, sizeof(home)); 398 else 399 (void)strlcpy(home, "/", sizeof(home)); 400 401 setttywidth(0); 402 (void)xsignal(SIGWINCH, setttywidth); 403 (void)xsignal(SIGUSR1, crankrate); 404 (void)xsignal(SIGUSR2, crankrate); 405 406 #ifdef __GNUC__ /* to shut up gcc warnings */ 407 (void)&argc; 408 (void)&argv; 409 #endif 410 411 if (argc > 0) { 412 if (strchr(argv[0], ':') != NULL && ! isipv6addr(argv[0])) { 413 rval = auto_fetch(argc, argv); 414 if (rval >= 0) /* -1 == connected and cd-ed */ 415 exit(rval); 416 } else { 417 char *xargv[5]; 418 419 if (setjmp(toplevel)) 420 exit(0); 421 (void)xsignal(SIGINT, (sig_t)intr); 422 (void)xsignal(SIGPIPE, (sig_t)lostpeer); 423 xargv[0] = __progname; 424 xargv[1] = argv[0]; 425 xargv[2] = argv[1]; 426 xargv[3] = argv[2]; 427 xargv[4] = NULL; 428 do { 429 setpeer(argc+1, xargv); 430 if (!retry_connect) 431 break; 432 if (!connected) { 433 macnum = 0; 434 fprintf(ttyout, 435 "Retrying in %d seconds...\n", 436 retry_connect); 437 sleep(retry_connect); 438 } 439 } while (!connected); 440 retry_connect = 0; /* connected, stop hiding msgs */ 441 } 442 } 443 #ifndef NO_EDITCOMPLETE 444 controlediting(); 445 #endif /* !NO_EDITCOMPLETE */ 446 top = setjmp(toplevel) == 0; 447 if (top) { 448 (void)xsignal(SIGINT, (sig_t)intr); 449 (void)xsignal(SIGPIPE, (sig_t)lostpeer); 450 } 451 for (;;) { 452 cmdscanner(top); 453 top = 1; 454 } 455 } 456 457 void 458 intr() 459 { 460 461 alarmtimer(0); 462 longjmp(toplevel, 1); 463 } 464 465 void 466 lostpeer() 467 { 468 469 alarmtimer(0); 470 if (connected) { 471 if (cout != NULL) { 472 (void)shutdown(fileno(cout), 1+1); 473 (void)fclose(cout); 474 cout = NULL; 475 } 476 if (data >= 0) { 477 (void)shutdown(data, 1+1); 478 (void)close(data); 479 data = -1; 480 } 481 connected = 0; 482 } 483 pswitch(1); 484 if (connected) { 485 if (cout != NULL) { 486 (void)shutdown(fileno(cout), 1+1); 487 (void)fclose(cout); 488 cout = NULL; 489 } 490 connected = 0; 491 } 492 proxflag = 0; 493 pswitch(0); 494 } 495 496 /* 497 * Generate a prompt 498 */ 499 char * 500 prompt() 501 { 502 return ("ftp> "); 503 } 504 505 /* 506 * Command parser. 507 */ 508 void 509 cmdscanner(top) 510 int top; 511 { 512 struct cmd *c; 513 int num; 514 515 if (!top 516 #ifndef NO_EDITCOMPLETE 517 && !editing 518 #endif /* !NO_EDITCOMPLETE */ 519 ) 520 (void)putc('\n', ttyout); 521 for (;;) { 522 #ifndef NO_EDITCOMPLETE 523 if (!editing) { 524 #endif /* !NO_EDITCOMPLETE */ 525 if (fromatty) { 526 fputs(prompt(), ttyout); 527 (void)fflush(ttyout); 528 } 529 if (fgets(line, sizeof(line), stdin) == NULL) 530 quit(0, 0); 531 num = strlen(line); 532 if (num == 0) 533 break; 534 if (line[--num] == '\n') { 535 if (num == 0) 536 break; 537 line[num] = '\0'; 538 } else if (num == sizeof(line) - 2) { 539 fputs("sorry, input line too long.\n", ttyout); 540 while ((num = getchar()) != '\n' && num != EOF) 541 /* void */; 542 break; 543 } /* else it was a line without a newline */ 544 #ifndef NO_EDITCOMPLETE 545 } else { 546 const char *buf; 547 HistEvent ev; 548 cursor_pos = NULL; 549 550 if ((buf = el_gets(el, &num)) == NULL || num == 0) 551 quit(0, 0); 552 if (buf[--num] == '\n') { 553 if (num == 0) 554 break; 555 } else if (num >= sizeof(line)) { 556 fputs("sorry, input line too long.\n", ttyout); 557 break; 558 } 559 memcpy(line, buf, num); 560 line[num] = '\0'; 561 history(hist, &ev, H_ENTER, buf); 562 } 563 #endif /* !NO_EDITCOMPLETE */ 564 565 makeargv(); 566 if (margc == 0) 567 continue; 568 c = getcmd(margv[0]); 569 if (c == (struct cmd *)-1) { 570 fputs("?Ambiguous command.\n", ttyout); 571 continue; 572 } 573 if (c == NULL) { 574 #if !defined(NO_EDITCOMPLETE) 575 /* 576 * attempt to el_parse() unknown commands. 577 * any command containing a ':' would be parsed 578 * as "[prog:]cmd ...", and will result in a 579 * false positive if prog != "ftp", so treat 580 * such commands as invalid. 581 */ 582 if (strchr(margv[0], ':') != NULL || 583 el_parse(el, margc, margv) != 0) 584 #endif /* !NO_EDITCOMPLETE */ 585 fputs("?Invalid command.\n", ttyout); 586 continue; 587 } 588 if (c->c_conn && !connected) { 589 fputs("Not connected.\n", ttyout); 590 continue; 591 } 592 confirmrest = 0; 593 (*c->c_handler)(margc, margv); 594 if (bell && c->c_bell) 595 (void)putc('\007', ttyout); 596 if (c->c_handler != help) 597 break; 598 } 599 (void)xsignal(SIGINT, (sig_t)intr); 600 (void)xsignal(SIGPIPE, (sig_t)lostpeer); 601 } 602 603 struct cmd * 604 getcmd(name) 605 const char *name; 606 { 607 const char *p, *q; 608 struct cmd *c, *found; 609 int nmatches, longest; 610 611 if (name == NULL) 612 return (0); 613 614 longest = 0; 615 nmatches = 0; 616 found = 0; 617 for (c = cmdtab; (p = c->c_name) != NULL; c++) { 618 for (q = name; *q == *p++; q++) 619 if (*q == 0) /* exact match? */ 620 return (c); 621 if (!*q) { /* the name was a prefix */ 622 if (q - name > longest) { 623 longest = q - name; 624 nmatches = 1; 625 found = c; 626 } else if (q - name == longest) 627 nmatches++; 628 } 629 } 630 if (nmatches > 1) 631 return ((struct cmd *)-1); 632 return (found); 633 } 634 635 /* 636 * Slice a string up into argc/argv. 637 */ 638 639 int slrflag; 640 641 void 642 makeargv() 643 { 644 char *argp; 645 646 stringbase = line; /* scan from first of buffer */ 647 argbase = argbuf; /* store from first of buffer */ 648 slrflag = 0; 649 marg_sl->sl_cur = 0; /* reset to start of marg_sl */ 650 for (margc = 0; ; margc++) { 651 argp = slurpstring(); 652 sl_add(marg_sl, argp); 653 if (argp == NULL) 654 break; 655 } 656 #ifndef NO_EDITCOMPLETE 657 if (cursor_pos == line) { 658 cursor_argc = 0; 659 cursor_argo = 0; 660 } else if (cursor_pos != NULL) { 661 cursor_argc = margc; 662 cursor_argo = strlen(margv[margc-1]); 663 } 664 #endif /* !NO_EDITCOMPLETE */ 665 } 666 667 #ifdef NO_EDITCOMPLETE 668 #define INC_CHKCURSOR(x) (x)++ 669 #else /* !NO_EDITCOMPLETE */ 670 #define INC_CHKCURSOR(x) { (x)++ ; \ 671 if (x == cursor_pos) { \ 672 cursor_argc = margc; \ 673 cursor_argo = ap-argbase; \ 674 cursor_pos = NULL; \ 675 } } 676 677 #endif /* !NO_EDITCOMPLETE */ 678 679 /* 680 * Parse string into argbuf; 681 * implemented with FSM to 682 * handle quoting and strings 683 */ 684 char * 685 slurpstring() 686 { 687 int got_one = 0; 688 char *sb = stringbase; 689 char *ap = argbase; 690 char *tmp = argbase; /* will return this if token found */ 691 692 if (*sb == '!' || *sb == '$') { /* recognize ! as a token for shell */ 693 switch (slrflag) { /* and $ as token for macro invoke */ 694 case 0: 695 slrflag++; 696 INC_CHKCURSOR(stringbase); 697 return ((*sb == '!') ? "!" : "$"); 698 /* NOTREACHED */ 699 case 1: 700 slrflag++; 701 altarg = stringbase; 702 break; 703 default: 704 break; 705 } 706 } 707 708 S0: 709 switch (*sb) { 710 711 case '\0': 712 goto OUT; 713 714 case ' ': 715 case '\t': 716 INC_CHKCURSOR(sb); 717 goto S0; 718 719 default: 720 switch (slrflag) { 721 case 0: 722 slrflag++; 723 break; 724 case 1: 725 slrflag++; 726 altarg = sb; 727 break; 728 default: 729 break; 730 } 731 goto S1; 732 } 733 734 S1: 735 switch (*sb) { 736 737 case ' ': 738 case '\t': 739 case '\0': 740 goto OUT; /* end of token */ 741 742 case '\\': 743 INC_CHKCURSOR(sb); 744 goto S2; /* slurp next character */ 745 746 case '"': 747 INC_CHKCURSOR(sb); 748 goto S3; /* slurp quoted string */ 749 750 default: 751 *ap = *sb; /* add character to token */ 752 ap++; 753 INC_CHKCURSOR(sb); 754 got_one = 1; 755 goto S1; 756 } 757 758 S2: 759 switch (*sb) { 760 761 case '\0': 762 goto OUT; 763 764 default: 765 *ap = *sb; 766 ap++; 767 INC_CHKCURSOR(sb); 768 got_one = 1; 769 goto S1; 770 } 771 772 S3: 773 switch (*sb) { 774 775 case '\0': 776 goto OUT; 777 778 case '"': 779 INC_CHKCURSOR(sb); 780 goto S1; 781 782 default: 783 *ap = *sb; 784 ap++; 785 INC_CHKCURSOR(sb); 786 got_one = 1; 787 goto S3; 788 } 789 790 OUT: 791 if (got_one) 792 *ap++ = '\0'; 793 argbase = ap; /* update storage pointer */ 794 stringbase = sb; /* update scan pointer */ 795 if (got_one) { 796 return (tmp); 797 } 798 switch (slrflag) { 799 case 0: 800 slrflag++; 801 break; 802 case 1: 803 slrflag++; 804 altarg = NULL; 805 break; 806 default: 807 break; 808 } 809 return (NULL); 810 } 811 812 /* 813 * Help command. 814 * Call each command handler with argc == 0 and argv[0] == name. 815 */ 816 void 817 help(argc, argv) 818 int argc; 819 char *argv[]; 820 { 821 struct cmd *c; 822 823 if (argc == 1) { 824 StringList *buf; 825 826 buf = sl_init(); 827 fprintf(ttyout, 828 "%sommands may be abbreviated. Commands are:\n\n", 829 proxy ? "Proxy c" : "C"); 830 for (c = cmdtab; c < &cmdtab[NCMDS]; c++) 831 if (c->c_name && (!proxy || c->c_proxy)) 832 sl_add(buf, c->c_name); 833 list_vertical(buf); 834 sl_free(buf, 0); 835 return; 836 } 837 838 #define HELPINDENT ((int) sizeof("disconnect")) 839 840 while (--argc > 0) { 841 char *arg; 842 843 arg = *++argv; 844 c = getcmd(arg); 845 if (c == (struct cmd *)-1) 846 fprintf(ttyout, "?Ambiguous help command %s\n", arg); 847 else if (c == NULL) 848 fprintf(ttyout, "?Invalid help command %s\n", arg); 849 else 850 fprintf(ttyout, "%-*s\t%s\n", HELPINDENT, 851 c->c_name, c->c_help); 852 } 853 } 854 855 void 856 usage() 857 { 858 (void)fprintf(stderr, 859 "usage: %s [-AadefginpRtvV] [-r retry] [-o outfile] [-P port] [-T dir,max[,inc]\n" 860 " [host [port]] [file:///file] [ftp://[user[:pass]@]host[:port]/path[/]]\n" 861 " [http://[user[:pass]@]host[:port]/path] [host:path[/]]\n", __progname); 862 exit(1); 863 } 864
Indexes created Sun Oct 19 22:09:57 GMT 2025