main.c revision 1.73
1 /* $NetBSD: main.c,v 1.73 2000/07/18 07:16:56 lukem Exp $ */ 2 3 /*- 4 * Copyright (c) 1996-2000 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 1.73 2000/07/18 07:16:56 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 static void setupoption(char *, char *, char *); 140 int main(int, char *[]); 141 142 int 143 main(int argc, char *argv[]) 144 { 145 int ch, rval; 146 struct passwd *pw = NULL; 147 char *cp, *ep, *anonuser, *anonpass, *upload_path; 148 int dumbterm, s, len, isupload; 149 150 ftpport = "ftp"; 151 httpport = "http"; 152 gateport = NULL; 153 cp = getenv("FTPSERVERPORT"); 154 if (cp != NULL) 155 gateport = cp; 156 else 157 gateport = "ftpgate"; 158 doglob = 1; 159 interactive = 1; 160 autologin = 1; 161 passivemode = 1; 162 activefallback = 1; 163 preserve = 1; 164 verbose = 0; 165 progress = 0; 166 gatemode = 0; 167 data = -1; 168 outfile = NULL; 169 restartautofetch = 0; 170 #ifndef NO_EDITCOMPLETE 171 editing = 0; 172 el = NULL; 173 hist = NULL; 174 #endif 175 bytes = 0; 176 mark = HASHBYTES; 177 rate_get = 0; 178 rate_get_incr = DEFAULTINCR; 179 rate_put = 0; 180 rate_put_incr = DEFAULTINCR; 181 #ifdef INET6 182 epsv4 = 1; 183 #else 184 epsv4 = 0; 185 #endif 186 epsv4bad = 0; 187 upload_path = NULL; 188 isupload = 0; 189 reply_callback = NULL; 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 = xsl_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 (strcasecmp(cp, "passive") == 0) { 222 passivemode = 1; 223 activefallback = 0; 224 } else if (strcasecmp(cp, "active") == 0) { 225 passivemode = 0; 226 activefallback = 0; 227 } else if (strcasecmp(cp, "gate") == 0) { 228 gatemode = 1; 229 } else if (strcasecmp(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:u: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 'u': 368 { 369 isupload = 1; 370 interactive = 0; 371 upload_path = xstrdup(optarg); 372 373 break; 374 } 375 376 case 'v': 377 progress = verbose = 1; 378 break; 379 380 case 'V': 381 progress = verbose = 0; 382 break; 383 384 default: 385 usage(); 386 } 387 } 388 /* set line buffering on ttyout */ 389 setvbuf(ttyout, NULL, _IOLBF, 0); 390 argc -= optind; 391 argv += optind; 392 393 cpend = 0; /* no pending replies */ 394 proxy = 0; /* proxy not active */ 395 crflag = 1; /* strip c.r. on ascii gets */ 396 sendport = -1; /* not using ports */ 397 /* 398 * Set up the home directory in case we're globbing. 399 */ 400 cp = getlogin(); 401 if (cp != NULL) 402 pw = getpwnam(cp); 403 if (pw == NULL) 404 pw = getpwuid(getuid()); 405 if (pw != NULL) { 406 (void)strlcpy(home, pw->pw_dir, sizeof(home)); 407 anonuser = pw->pw_name; 408 } else { 409 (void)strlcpy(home, "/", sizeof(home)); 410 anonuser = "anonymous"; 411 } 412 413 /* 414 * Every anonymous FTP server I've encountered will accept the 415 * string "username@", and will append the hostname itself. We 416 * do this by default since many servers are picky about not 417 * having a FQDN in the anonymous password. 418 * - thorpej (at) netbsd.org 419 */ 420 len = strlen(anonuser) + 2; 421 anonpass = xmalloc(len); 422 (void)strlcpy(anonpass, anonuser, len); 423 (void)strlcat(anonpass, "@", len); 424 425 /* 426 * set all the defaults for options defined in 427 * struct option optiontab[] declared in cmdtab.c 428 */ 429 setupoption("anonpass", getenv("FTPANONPASS"), anonpass); 430 setupoption("ftp_proxy", getenv(FTP_PROXY), ""); 431 setupoption("http_proxy", getenv(HTTP_PROXY), ""); 432 setupoption("no_proxy", getenv(NO_PROXY), ""); 433 setupoption("pager", getenv("PAGER"), DEFAULTPAGER); 434 setupoption("prompt", getenv("FTPPROMPT"), DEFAULTPROMPT); 435 setupoption("rprompt", getenv("FTPRPROMPT"), DEFAULTRPROMPT); 436 437 free(anonpass); 438 439 setttywidth(0); 440 #ifdef SIGINFO 441 (void)xsignal(SIGINFO, psummary); 442 #endif 443 (void)xsignal(SIGQUIT, psummary); 444 (void)xsignal(SIGUSR1, crankrate); 445 (void)xsignal(SIGUSR2, crankrate); 446 (void)xsignal(SIGWINCH, setttywidth); 447 448 #ifdef __GNUC__ /* to shut up gcc warnings */ 449 (void)&argc; 450 (void)&argv; 451 #endif 452 453 if (argc > 0) { 454 if (isupload) { 455 rval = auto_put(argc, argv, upload_path); 456 exit(rval); 457 } else if (strchr(argv[0], ':') != NULL 458 && ! isipv6addr(argv[0])) { 459 rval = auto_fetch(argc, argv); 460 if (rval >= 0) /* -1 == connected and cd-ed */ 461 exit(rval); 462 } else { 463 char *xargv[4], *user, *host; 464 465 if (sigsetjmp(toplevel, 1)) 466 exit(0); 467 (void)xsignal(SIGINT, intr); 468 (void)xsignal(SIGPIPE, lostpeer); 469 user = NULL; 470 host = argv[0]; 471 cp = strchr(host, '@'); 472 if (cp) { 473 *cp = '\0'; 474 user = host; 475 host = cp + 1; 476 } 477 xargv[0] = __progname; 478 xargv[1] = host; 479 xargv[2] = argv[1]; 480 xargv[3] = NULL; 481 do { 482 int oautologin; 483 484 oautologin = autologin; 485 if (user != NULL) { 486 anonftp = 0; 487 autologin = 0; 488 } 489 setpeer(argc+1, xargv); 490 autologin = oautologin; 491 if (connected == 1 && user != NULL) 492 (void)ftp_login(host, user, NULL); 493 if (!retry_connect) 494 break; 495 if (!connected) { 496 macnum = 0; 497 fprintf(ttyout, 498 "Retrying in %d seconds...\n", 499 retry_connect); 500 sleep(retry_connect); 501 } 502 } while (!connected); 503 retry_connect = 0; /* connected, stop hiding msgs */ 504 } 505 } 506 if (isupload) 507 usage(); 508 509 #ifndef NO_EDITCOMPLETE 510 controlediting(); 511 #endif /* !NO_EDITCOMPLETE */ 512 513 (void)sigsetjmp(toplevel, 1); 514 (void)xsignal(SIGINT, intr); 515 (void)xsignal(SIGPIPE, lostpeer); 516 for (;;) 517 cmdscanner(); 518 } 519 520 /* 521 * Generate a prompt 522 */ 523 char * 524 prompt(void) 525 { 526 static char **prompt; 527 static char buf[MAXPATHLEN]; 528 529 if (prompt == NULL) { 530 struct option *o; 531 532 o = getoption("prompt"); 533 if (o == NULL) 534 errx(1, "no such option `prompt'"); 535 prompt = &(o->value); 536 } 537 formatbuf(buf, sizeof(buf), *prompt ? *prompt : DEFAULTPROMPT); 538 return (buf); 539 } 540 541 /* 542 * Generate an rprompt 543 */ 544 char * 545 rprompt(void) 546 { 547 static char **rprompt; 548 static char buf[MAXPATHLEN]; 549 550 if (rprompt == NULL) { 551 struct option *o; 552 553 o = getoption("rprompt"); 554 if (o == NULL) 555 errx(1, "no such option `rprompt'"); 556 rprompt = &(o->value); 557 } 558 formatbuf(buf, sizeof(buf), *rprompt ? *rprompt : DEFAULTRPROMPT); 559 return (buf); 560 } 561 562 /* 563 * Command parser. 564 */ 565 void 566 cmdscanner(void) 567 { 568 struct cmd *c; 569 char *p; 570 int num; 571 572 for (;;) { 573 #ifndef NO_EDITCOMPLETE 574 if (!editing) { 575 #endif /* !NO_EDITCOMPLETE */ 576 if (fromatty) { 577 fputs(prompt(), ttyout); 578 p = rprompt(); 579 if (*p) 580 fprintf(ttyout, "%s ", p); 581 (void)fflush(ttyout); 582 } 583 if (fgets(line, sizeof(line), stdin) == NULL) { 584 if (fromatty) 585 putc('\n', ttyout); 586 quit(0, NULL); 587 } 588 num = strlen(line); 589 if (num == 0) 590 break; 591 if (line[--num] == '\n') { 592 if (num == 0) 593 break; 594 line[num] = '\0'; 595 } else if (num == sizeof(line) - 2) { 596 fputs("sorry, input line too long.\n", ttyout); 597 while ((num = getchar()) != '\n' && num != EOF) 598 /* void */; 599 break; 600 } /* else it was a line without a newline */ 601 #ifndef NO_EDITCOMPLETE 602 } else { 603 const char *buf; 604 HistEvent ev; 605 cursor_pos = NULL; 606 607 if ((buf = el_gets(el, &num)) == NULL || num == 0) { 608 if (fromatty) 609 putc('\n', ttyout); 610 quit(0, NULL); 611 } 612 if (buf[--num] == '\n') { 613 if (num == 0) 614 break; 615 } else if (num >= sizeof(line)) { 616 fputs("sorry, input line too long.\n", ttyout); 617 break; 618 } 619 memcpy(line, buf, num); 620 line[num] = '\0'; 621 history(hist, &ev, H_ENTER, buf); 622 } 623 #endif /* !NO_EDITCOMPLETE */ 624 625 makeargv(); 626 if (margc == 0) 627 continue; 628 c = getcmd(margv[0]); 629 if (c == (struct cmd *)-1) { 630 fputs("?Ambiguous command.\n", ttyout); 631 continue; 632 } 633 if (c == NULL) { 634 #if !defined(NO_EDITCOMPLETE) 635 /* 636 * attempt to el_parse() unknown commands. 637 * any command containing a ':' would be parsed 638 * as "[prog:]cmd ...", and will result in a 639 * false positive if prog != "ftp", so treat 640 * such commands as invalid. 641 */ 642 if (strchr(margv[0], ':') != NULL || 643 el_parse(el, margc, margv) != 0) 644 #endif /* !NO_EDITCOMPLETE */ 645 fputs("?Invalid command.\n", ttyout); 646 continue; 647 } 648 if (c->c_conn && !connected) { 649 fputs("Not connected.\n", ttyout); 650 continue; 651 } 652 confirmrest = 0; 653 (*c->c_handler)(margc, margv); 654 if (bell && c->c_bell) 655 (void)putc('\007', ttyout); 656 if (c->c_handler != help) 657 break; 658 } 659 (void)xsignal(SIGINT, intr); 660 (void)xsignal(SIGPIPE, lostpeer); 661 } 662 663 struct cmd * 664 getcmd(const char *name) 665 { 666 const char *p, *q; 667 struct cmd *c, *found; 668 int nmatches, longest; 669 670 if (name == NULL) 671 return (0); 672 673 longest = 0; 674 nmatches = 0; 675 found = 0; 676 for (c = cmdtab; (p = c->c_name) != NULL; c++) { 677 for (q = name; *q == *p++; q++) 678 if (*q == 0) /* exact match? */ 679 return (c); 680 if (!*q) { /* the name was a prefix */ 681 if (q - name > longest) { 682 longest = q - name; 683 nmatches = 1; 684 found = c; 685 } else if (q - name == longest) 686 nmatches++; 687 } 688 } 689 if (nmatches > 1) 690 return ((struct cmd *)-1); 691 return (found); 692 } 693 694 /* 695 * Slice a string up into argc/argv. 696 */ 697 698 int slrflag; 699 700 void 701 makeargv(void) 702 { 703 char *argp; 704 705 stringbase = line; /* scan from first of buffer */ 706 argbase = argbuf; /* store from first of buffer */ 707 slrflag = 0; 708 marg_sl->sl_cur = 0; /* reset to start of marg_sl */ 709 for (margc = 0; ; margc++) { 710 argp = slurpstring(); 711 xsl_add(marg_sl, argp); 712 if (argp == NULL) 713 break; 714 } 715 #ifndef NO_EDITCOMPLETE 716 if (cursor_pos == line) { 717 cursor_argc = 0; 718 cursor_argo = 0; 719 } else if (cursor_pos != NULL) { 720 cursor_argc = margc; 721 cursor_argo = strlen(margv[margc-1]); 722 } 723 #endif /* !NO_EDITCOMPLETE */ 724 } 725 726 #ifdef NO_EDITCOMPLETE 727 #define INC_CHKCURSOR(x) (x)++ 728 #else /* !NO_EDITCOMPLETE */ 729 #define INC_CHKCURSOR(x) { (x)++ ; \ 730 if (x == cursor_pos) { \ 731 cursor_argc = margc; \ 732 cursor_argo = ap-argbase; \ 733 cursor_pos = NULL; \ 734 } } 735 736 #endif /* !NO_EDITCOMPLETE */ 737 738 /* 739 * Parse string into argbuf; 740 * implemented with FSM to 741 * handle quoting and strings 742 */ 743 char * 744 slurpstring(void) 745 { 746 int got_one = 0; 747 char *sb = stringbase; 748 char *ap = argbase; 749 char *tmp = argbase; /* will return this if token found */ 750 751 if (*sb == '!' || *sb == '$') { /* recognize ! as a token for shell */ 752 switch (slrflag) { /* and $ as token for macro invoke */ 753 case 0: 754 slrflag++; 755 INC_CHKCURSOR(stringbase); 756 return ((*sb == '!') ? "!" : "$"); 757 /* NOTREACHED */ 758 case 1: 759 slrflag++; 760 altarg = stringbase; 761 break; 762 default: 763 break; 764 } 765 } 766 767 S0: 768 switch (*sb) { 769 770 case '\0': 771 goto OUT; 772 773 case ' ': 774 case '\t': 775 INC_CHKCURSOR(sb); 776 goto S0; 777 778 default: 779 switch (slrflag) { 780 case 0: 781 slrflag++; 782 break; 783 case 1: 784 slrflag++; 785 altarg = sb; 786 break; 787 default: 788 break; 789 } 790 goto S1; 791 } 792 793 S1: 794 switch (*sb) { 795 796 case ' ': 797 case '\t': 798 case '\0': 799 goto OUT; /* end of token */ 800 801 case '\\': 802 INC_CHKCURSOR(sb); 803 goto S2; /* slurp next character */ 804 805 case '"': 806 INC_CHKCURSOR(sb); 807 goto S3; /* slurp quoted string */ 808 809 default: 810 *ap = *sb; /* add character to token */ 811 ap++; 812 INC_CHKCURSOR(sb); 813 got_one = 1; 814 goto S1; 815 } 816 817 S2: 818 switch (*sb) { 819 820 case '\0': 821 goto OUT; 822 823 default: 824 *ap = *sb; 825 ap++; 826 INC_CHKCURSOR(sb); 827 got_one = 1; 828 goto S1; 829 } 830 831 S3: 832 switch (*sb) { 833 834 case '\0': 835 goto OUT; 836 837 case '"': 838 INC_CHKCURSOR(sb); 839 goto S1; 840 841 default: 842 *ap = *sb; 843 ap++; 844 INC_CHKCURSOR(sb); 845 got_one = 1; 846 goto S3; 847 } 848 849 OUT: 850 if (got_one) 851 *ap++ = '\0'; 852 argbase = ap; /* update storage pointer */ 853 stringbase = sb; /* update scan pointer */ 854 if (got_one) { 855 return (tmp); 856 } 857 switch (slrflag) { 858 case 0: 859 slrflag++; 860 break; 861 case 1: 862 slrflag++; 863 altarg = NULL; 864 break; 865 default: 866 break; 867 } 868 return (NULL); 869 } 870 871 /* 872 * Help/usage command. 873 * Call each command handler with argc == 0 and argv[0] == name. 874 */ 875 void 876 help(int argc, char *argv[]) 877 { 878 struct cmd *c; 879 char *nargv[1], *p, *cmd; 880 int isusage; 881 882 cmd = argv[0]; 883 isusage = (strcmp(cmd, "usage") == 0); 884 if (argc == 0 || (isusage && argc == 1)) { 885 fprintf(ttyout, "usage: %s [command [...]]\n", cmd); 886 return; 887 } 888 if (argc == 1) { 889 StringList *buf; 890 891 buf = xsl_init(); 892 fprintf(ttyout, 893 "%sommands may be abbreviated. Commands are:\n\n", 894 proxy ? "Proxy c" : "C"); 895 for (c = cmdtab; (p = c->c_name) != NULL; c++) 896 if (!proxy || c->c_proxy) 897 xsl_add(buf, p); 898 list_vertical(buf); 899 sl_free(buf, 0); 900 return; 901 } 902 903 #define HELPINDENT ((int) sizeof("disconnect")) 904 905 while (--argc > 0) { 906 char *arg; 907 908 arg = *++argv; 909 c = getcmd(arg); 910 if (c == (struct cmd *)-1) 911 fprintf(ttyout, "?Ambiguous %s command `%s'\n", 912 cmd, arg); 913 else if (c == NULL) 914 fprintf(ttyout, "?Invalid %s command `%s'\n", 915 cmd, arg); 916 else { 917 if (isusage) { 918 nargv[0] = arg; 919 (*c->c_handler)(0, nargv); 920 } else 921 fprintf(ttyout, "%-*s\t%s\n", HELPINDENT, 922 c->c_name, c->c_help); 923 } 924 } 925 } 926 927 struct option * 928 getoption(const char *name) 929 { 930 const char *p; 931 struct option *c; 932 933 if (name == NULL) 934 return (NULL); 935 for (c = optiontab; (p = c->name) != NULL; c++) { 936 if (strcasecmp(p, name) == 0) 937 return (c); 938 } 939 return (NULL); 940 } 941 942 char * 943 getoptionvalue(const char *name) 944 { 945 struct option *c; 946 947 if (name == NULL) 948 errx(1, "getoptionvalue() invoked with NULL name"); 949 c = getoption(name); 950 if (c != NULL) 951 return (c->value); 952 errx(1, "getoptionvalue() invoked with unknown option `%s'", name); 953 /* NOTREACHED */ 954 } 955 956 static void 957 setupoption(char *name, char *value, char *defaultvalue) 958 { 959 char *nargv[3]; 960 int overbose; 961 962 nargv[0] = "setupoption()"; 963 nargv[1] = name; 964 nargv[2] = (value ? value : defaultvalue); 965 overbose = verbose; 966 verbose = 0; 967 setoption(3, nargv); 968 verbose = overbose; 969 } 970 971 void 972 usage(void) 973 { 974 (void)fprintf(stderr, 975 "usage: %s [-AadefginpRtvV] [-o outfile] [-P port] [-r retry]\n" 976 " [-T dir,max[,inc][[user@]host [port]]] [host:path[/]]\n" 977 " [file:///file] [ftp://[user[:pass]@]host[:port]/path[/]]\n" 978 " [http://[user[:pass]@]host[:port]/path] [...]\n" 979 " %s -u url file [...]\n", __progname, __progname); 980 exit(1); 981 } 982
Indexes created Thu Sep 25 08:09:54 GMT 2025