main.c revision 1.77
1 /* $NetBSD: main.c,v 1.77 2001/02/19 23:03:46 cgd 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 1.77 2001/02/19 23:03:46 cgd Exp $"); 112 #endif 113 #endif /* not lint */ 114 115 /* 116 * FTP User Program -- Command Interface. 117 */ 118 #include <sys/types.h> 119 #include <sys/socket.h> 120 121 #include <err.h> 122 #include <errno.h> 123 #include <netdb.h> 124 #include <paths.h> 125 #include <pwd.h> 126 #include <stdio.h> 127 #include <stdlib.h> 128 #include <string.h> 129 #include <unistd.h> 130 #include <locale.h> 131 132 #define GLOBAL /* force GLOBAL decls in ftp_var.h to be declared */ 133 #include "ftp_var.h" 134 135 #define FTP_PROXY "ftp_proxy" /* env var with FTP proxy location */ 136 #define HTTP_PROXY "http_proxy" /* env var with HTTP proxy location */ 137 #define NO_PROXY "no_proxy" /* env var with list of non-proxied 138 * hosts, comma or space separated */ 139 140 static void setupoption(char *, char *, char *); 141 int main(int, char *[]); 142 143 int 144 main(int argc, char *argv[]) 145 { 146 int ch, rval; 147 struct passwd *pw; 148 char *cp, *ep, *anonuser, *anonpass, *upload_path; 149 int dumbterm, s, len, isupload; 150 151 setlocale(LC_ALL, ""); 152 153 ftpport = "ftp"; 154 httpport = "http"; 155 gateport = NULL; 156 cp = getenv("FTPSERVERPORT"); 157 if (cp != NULL) 158 gateport = cp; 159 else 160 gateport = "ftpgate"; 161 doglob = 1; 162 interactive = 1; 163 autologin = 1; 164 passivemode = 1; 165 activefallback = 1; 166 preserve = 1; 167 verbose = 0; 168 progress = 0; 169 gatemode = 0; 170 data = -1; 171 outfile = NULL; 172 restartautofetch = 0; 173 #ifndef NO_EDITCOMPLETE 174 editing = 0; 175 el = NULL; 176 hist = NULL; 177 #endif 178 bytes = 0; 179 mark = HASHBYTES; 180 rate_get = 0; 181 rate_get_incr = DEFAULTINCR; 182 rate_put = 0; 183 rate_put_incr = DEFAULTINCR; 184 #ifdef INET6 185 epsv4 = 1; 186 #else 187 epsv4 = 0; 188 #endif 189 epsv4bad = 0; 190 upload_path = NULL; 191 isupload = 0; 192 reply_callback = NULL; 193 194 netrc[0] = '\0'; 195 cp = getenv("NETRC"); 196 if (cp != NULL && strlcpy(netrc, cp, sizeof(netrc)) >= sizeof(netrc)) 197 errx(1, "$NETRC `%s': %s", cp, strerror(ENAMETOOLONG)); 198 199 /* 200 * Get the default socket buffer sizes if we don't already have them. 201 * It doesn't matter which socket we do this to, because on the first 202 * call no socket buffer sizes will have been modified, so we are 203 * guaranteed to get the system defaults. 204 */ 205 s = socket(AF_INET, SOCK_STREAM, 0); 206 if (s == -1) 207 err(1, "can't create socket"); 208 len = sizeof(rcvbuf_size); 209 if (getsockopt(s, SOL_SOCKET, SO_RCVBUF, (void *) &rcvbuf_size, &len) 210 < 0) 211 err(1, "unable to get default rcvbuf size"); 212 len = sizeof(sndbuf_size); 213 if (getsockopt(s, SOL_SOCKET, SO_SNDBUF, (void *) &sndbuf_size, &len) 214 < 0) 215 err(1, "unable to get default sndbuf size"); 216 (void)close(s); 217 /* sanity check returned buffer sizes */ 218 if (rcvbuf_size <= 0) 219 rcvbuf_size = 8192; 220 if (sndbuf_size <= 0) 221 sndbuf_size = 8192; 222 223 marg_sl = xsl_init(); 224 if ((tmpdir = getenv("TMPDIR")) == NULL) 225 tmpdir = _PATH_TMP; 226 227 /* Set default operation mode based on FTPMODE environment variable */ 228 if ((cp = getenv("FTPMODE")) != NULL) { 229 if (strcasecmp(cp, "passive") == 0) { 230 passivemode = 1; 231 activefallback = 0; 232 } else if (strcasecmp(cp, "active") == 0) { 233 passivemode = 0; 234 activefallback = 0; 235 } else if (strcasecmp(cp, "gate") == 0) { 236 gatemode = 1; 237 } else if (strcasecmp(cp, "auto") == 0) { 238 passivemode = 1; 239 activefallback = 1; 240 } else 241 warnx("unknown $FTPMODE '%s'; using defaults", cp); 242 } 243 244 if (strcmp(getprogname(), "pftp") == 0) { 245 passivemode = 1; 246 activefallback = 0; 247 } else if (strcmp(getprogname(), "gate-ftp") == 0) 248 gatemode = 1; 249 250 gateserver = getenv("FTPSERVER"); 251 if (gateserver == NULL || *gateserver == '\0') 252 gateserver = GATE_SERVER; 253 if (gatemode) { 254 if (*gateserver == '\0') { 255 warnx( 256 "Neither $FTPSERVER nor GATE_SERVER is defined; disabling gate-ftp"); 257 gatemode = 0; 258 } 259 } 260 261 cp = getenv("TERM"); 262 if (cp == NULL || strcmp(cp, "dumb") == 0) 263 dumbterm = 1; 264 else 265 dumbterm = 0; 266 fromatty = isatty(fileno(stdin)); 267 ttyout = stdout; 268 if (isatty(fileno(ttyout))) { 269 verbose = 1; /* verbose if to a tty */ 270 if (! dumbterm) { 271 #ifndef NO_EDITCOMPLETE 272 if (fromatty) /* editing mode on if tty is usable */ 273 editing = 1; 274 #endif 275 #ifndef NO_PROGRESS 276 if (foregroundproc()) 277 progress = 1; /* progress bar on if fg */ 278 #endif 279 } 280 } 281 282 while ((ch = getopt(argc, argv, "AadefginN:o:pP:r:RtT:u:vV")) != -1) { 283 switch (ch) { 284 case 'A': 285 activefallback = 0; 286 passivemode = 0; 287 break; 288 289 case 'a': 290 anonftp = 1; 291 break; 292 293 case 'd': 294 options |= SO_DEBUG; 295 debug++; 296 break; 297 298 case 'e': 299 #ifndef NO_EDITCOMPLETE 300 editing = 0; 301 #endif 302 break; 303 304 case 'f': 305 flushcache = 1; 306 break; 307 308 case 'g': 309 doglob = 0; 310 break; 311 312 case 'i': 313 interactive = 0; 314 break; 315 316 case 'n': 317 autologin = 0; 318 break; 319 320 case 'N': 321 if (strlcpy(netrc, optarg, sizeof(netrc)) 322 >= sizeof(netrc)) 323 errx(1, "%s: %s", optarg, 324 strerror(ENAMETOOLONG)); 325 break; 326 327 case 'o': 328 outfile = optarg; 329 if (strcmp(outfile, "-") == 0) 330 ttyout = stderr; 331 break; 332 333 case 'p': 334 passivemode = 1; 335 activefallback = 0; 336 break; 337 338 case 'P': 339 ftpport = optarg; 340 break; 341 342 case 'r': 343 retry_connect = strtol(optarg, &ep, 10); 344 if (retry_connect < 1 || *ep != '\0') 345 errx(1, "bad retry value: %s", optarg); 346 break; 347 348 case 'R': 349 restartautofetch = 1; 350 break; 351 352 case 't': 353 trace = 1; 354 break; 355 356 case 'T': 357 { 358 int targc; 359 char *targv[6], *oac; 360 361 /* look for `dir,max[,incr]' */ 362 targc = 0; 363 targv[targc++] = "-T"; 364 oac = xstrdup(optarg); 365 366 while ((cp = strsep(&oac, ",")) != NULL) { 367 if (*cp == '\0') { 368 warnx("bad throttle value: %s", optarg); 369 usage(); 370 /* NOTREACHED */ 371 } 372 targv[targc++] = cp; 373 if (targc >= 5) 374 break; 375 } 376 if (parserate(targc, targv, 1) == -1) 377 usage(); 378 free(oac); 379 break; 380 } 381 382 case 'u': 383 { 384 isupload = 1; 385 interactive = 0; 386 upload_path = xstrdup(optarg); 387 388 break; 389 } 390 391 case 'v': 392 progress = verbose = 1; 393 break; 394 395 case 'V': 396 progress = verbose = 0; 397 break; 398 399 default: 400 usage(); 401 } 402 } 403 /* set line buffering on ttyout */ 404 setvbuf(ttyout, NULL, _IOLBF, 0); 405 argc -= optind; 406 argv += optind; 407 408 cpend = 0; /* no pending replies */ 409 proxy = 0; /* proxy not active */ 410 crflag = 1; /* strip c.r. on ascii gets */ 411 sendport = -1; /* not using ports */ 412 413 /* 414 * Cache the user name and home directory. 415 */ 416 localhome = NULL; 417 localname = NULL; 418 anonuser = "anonymous"; 419 cp = getenv("HOME"); 420 if (! EMPTYSTRING(cp)) 421 localhome = xstrdup(cp); 422 pw = NULL; 423 cp = getlogin(); 424 if (cp != NULL) 425 pw = getpwnam(cp); 426 if (pw == NULL) 427 pw = getpwuid(getuid()); 428 if (pw != NULL) { 429 if (localhome == NULL && !EMPTYSTRING(pw->pw_dir)) 430 localhome = xstrdup(pw->pw_dir); 431 localname = xstrdup(pw->pw_name); 432 anonuser = localname; 433 } 434 if (netrc[0] == '\0' && localhome != NULL) { 435 if (strlcpy(netrc, localhome, sizeof(netrc)) >= sizeof(netrc) || 436 strlcat(netrc, "/.netrc", sizeof(netrc)) >= sizeof(netrc)) { 437 warnx("%s/.netrc: %s", localhome, 438 strerror(ENAMETOOLONG)); 439 netrc[0] = '\0'; 440 } 441 } 442 if (localhome == NULL) 443 localhome = xstrdup("/"); 444 445 /* 446 * Every anonymous FTP server I've encountered will accept the 447 * string "username@", and will append the hostname itself. We 448 * do this by default since many servers are picky about not 449 * having a FQDN in the anonymous password. 450 * - thorpej (at) netbsd.org 451 */ 452 len = strlen(anonuser) + 2; 453 anonpass = xmalloc(len); 454 (void)strlcpy(anonpass, anonuser, len); 455 (void)strlcat(anonpass, "@", len); 456 457 /* 458 * set all the defaults for options defined in 459 * struct option optiontab[] declared in cmdtab.c 460 */ 461 setupoption("anonpass", getenv("FTPANONPASS"), anonpass); 462 setupoption("ftp_proxy", getenv(FTP_PROXY), ""); 463 setupoption("http_proxy", getenv(HTTP_PROXY), ""); 464 setupoption("no_proxy", getenv(NO_PROXY), ""); 465 setupoption("pager", getenv("PAGER"), DEFAULTPAGER); 466 setupoption("prompt", getenv("FTPPROMPT"), DEFAULTPROMPT); 467 setupoption("rprompt", getenv("FTPRPROMPT"), DEFAULTRPROMPT); 468 469 free(anonpass); 470 471 setttywidth(0); 472 #ifdef SIGINFO 473 (void)xsignal(SIGINFO, psummary); 474 #endif 475 (void)xsignal(SIGQUIT, psummary); 476 (void)xsignal(SIGUSR1, crankrate); 477 (void)xsignal(SIGUSR2, crankrate); 478 (void)xsignal(SIGWINCH, setttywidth); 479 480 #ifdef __GNUC__ /* to shut up gcc warnings */ 481 (void)&argc; 482 (void)&argv; 483 #endif 484 485 if (argc > 0) { 486 if (isupload) { 487 rval = auto_put(argc, argv, upload_path); 488 exit(rval); 489 } else if (strchr(argv[0], ':') != NULL 490 && ! isipv6addr(argv[0])) { 491 rval = auto_fetch(argc, argv); 492 if (rval >= 0) /* -1 == connected and cd-ed */ 493 exit(rval); 494 } else { 495 char *xargv[4], *user, *host; 496 497 if (sigsetjmp(toplevel, 1)) 498 exit(0); 499 (void)xsignal(SIGINT, intr); 500 (void)xsignal(SIGPIPE, lostpeer); 501 user = NULL; 502 host = argv[0]; 503 cp = strchr(host, '@'); 504 if (cp) { 505 *cp = '\0'; 506 user = host; 507 host = cp + 1; 508 } 509 /* XXX discards const */ 510 xargv[0] = (char *)getprogname(); 511 xargv[1] = host; 512 xargv[2] = argv[1]; 513 xargv[3] = NULL; 514 do { 515 int oautologin; 516 517 oautologin = autologin; 518 if (user != NULL) { 519 anonftp = 0; 520 autologin = 0; 521 } 522 setpeer(argc+1, xargv); 523 autologin = oautologin; 524 if (connected == 1 && user != NULL) 525 (void)ftp_login(host, user, NULL); 526 if (!retry_connect) 527 break; 528 if (!connected) { 529 macnum = 0; 530 fprintf(ttyout, 531 "Retrying in %d seconds...\n", 532 retry_connect); 533 sleep(retry_connect); 534 } 535 } while (!connected); 536 retry_connect = 0; /* connected, stop hiding msgs */ 537 } 538 } 539 if (isupload) 540 usage(); 541 542 #ifndef NO_EDITCOMPLETE 543 controlediting(); 544 #endif /* !NO_EDITCOMPLETE */ 545 546 (void)sigsetjmp(toplevel, 1); 547 (void)xsignal(SIGINT, intr); 548 (void)xsignal(SIGPIPE, lostpeer); 549 for (;;) 550 cmdscanner(); 551 } 552 553 /* 554 * Generate a prompt 555 */ 556 char * 557 prompt(void) 558 { 559 static char **prompt; 560 static char buf[MAXPATHLEN]; 561 562 if (prompt == NULL) { 563 struct option *o; 564 565 o = getoption("prompt"); 566 if (o == NULL) 567 errx(1, "no such option `prompt'"); 568 prompt = &(o->value); 569 } 570 formatbuf(buf, sizeof(buf), *prompt ? *prompt : DEFAULTPROMPT); 571 return (buf); 572 } 573 574 /* 575 * Generate an rprompt 576 */ 577 char * 578 rprompt(void) 579 { 580 static char **rprompt; 581 static char buf[MAXPATHLEN]; 582 583 if (rprompt == NULL) { 584 struct option *o; 585 586 o = getoption("rprompt"); 587 if (o == NULL) 588 errx(1, "no such option `rprompt'"); 589 rprompt = &(o->value); 590 } 591 formatbuf(buf, sizeof(buf), *rprompt ? *rprompt : DEFAULTRPROMPT); 592 return (buf); 593 } 594 595 /* 596 * Command parser. 597 */ 598 void 599 cmdscanner(void) 600 { 601 struct cmd *c; 602 char *p; 603 int num; 604 605 for (;;) { 606 #ifndef NO_EDITCOMPLETE 607 if (!editing) { 608 #endif /* !NO_EDITCOMPLETE */ 609 if (fromatty) { 610 fputs(prompt(), ttyout); 611 p = rprompt(); 612 if (*p) 613 fprintf(ttyout, "%s ", p); 614 (void)fflush(ttyout); 615 } 616 if (fgets(line, sizeof(line), stdin) == NULL) { 617 if (fromatty) 618 putc('\n', ttyout); 619 quit(0, NULL); 620 } 621 num = strlen(line); 622 if (num == 0) 623 break; 624 if (line[--num] == '\n') { 625 if (num == 0) 626 break; 627 line[num] = '\0'; 628 } else if (num == sizeof(line) - 2) { 629 fputs("sorry, input line too long.\n", ttyout); 630 while ((num = getchar()) != '\n' && num != EOF) 631 /* void */; 632 break; 633 } /* else it was a line without a newline */ 634 #ifndef NO_EDITCOMPLETE 635 } else { 636 const char *buf; 637 HistEvent ev; 638 cursor_pos = NULL; 639 640 if ((buf = el_gets(el, &num)) == NULL || num == 0) { 641 if (fromatty) 642 putc('\n', ttyout); 643 quit(0, NULL); 644 } 645 if (buf[--num] == '\n') { 646 if (num == 0) 647 break; 648 } else if (num >= sizeof(line)) { 649 fputs("sorry, input line too long.\n", ttyout); 650 break; 651 } 652 memcpy(line, buf, num); 653 line[num] = '\0'; 654 history(hist, &ev, H_ENTER, buf); 655 } 656 #endif /* !NO_EDITCOMPLETE */ 657 658 makeargv(); 659 if (margc == 0) 660 continue; 661 c = getcmd(margv[0]); 662 if (c == (struct cmd *)-1) { 663 fputs("?Ambiguous command.\n", ttyout); 664 continue; 665 } 666 if (c == NULL) { 667 #if !defined(NO_EDITCOMPLETE) 668 /* 669 * attempt to el_parse() unknown commands. 670 * any command containing a ':' would be parsed 671 * as "[prog:]cmd ...", and will result in a 672 * false positive if prog != "ftp", so treat 673 * such commands as invalid. 674 */ 675 if (strchr(margv[0], ':') != NULL || 676 el_parse(el, margc, margv) != 0) 677 #endif /* !NO_EDITCOMPLETE */ 678 fputs("?Invalid command.\n", ttyout); 679 continue; 680 } 681 if (c->c_conn && !connected) { 682 fputs("Not connected.\n", ttyout); 683 continue; 684 } 685 confirmrest = 0; 686 margv[0] = c->c_name; 687 (*c->c_handler)(margc, margv); 688 if (bell && c->c_bell) 689 (void)putc('\007', ttyout); 690 if (c->c_handler != help) 691 break; 692 } 693 (void)xsignal(SIGINT, intr); 694 (void)xsignal(SIGPIPE, lostpeer); 695 } 696 697 struct cmd * 698 getcmd(const char *name) 699 { 700 const char *p, *q; 701 struct cmd *c, *found; 702 int nmatches, longest; 703 704 if (name == NULL) 705 return (0); 706 707 longest = 0; 708 nmatches = 0; 709 found = 0; 710 for (c = cmdtab; (p = c->c_name) != NULL; c++) { 711 for (q = name; *q == *p++; q++) 712 if (*q == 0) /* exact match? */ 713 return (c); 714 if (!*q) { /* the name was a prefix */ 715 if (q - name > longest) { 716 longest = q - name; 717 nmatches = 1; 718 found = c; 719 } else if (q - name == longest) 720 nmatches++; 721 } 722 } 723 if (nmatches > 1) 724 return ((struct cmd *)-1); 725 return (found); 726 } 727 728 /* 729 * Slice a string up into argc/argv. 730 */ 731 732 int slrflag; 733 734 void 735 makeargv(void) 736 { 737 char *argp; 738 739 stringbase = line; /* scan from first of buffer */ 740 argbase = argbuf; /* store from first of buffer */ 741 slrflag = 0; 742 marg_sl->sl_cur = 0; /* reset to start of marg_sl */ 743 for (margc = 0; ; margc++) { 744 argp = slurpstring(); 745 xsl_add(marg_sl, argp); 746 if (argp == NULL) 747 break; 748 } 749 #ifndef NO_EDITCOMPLETE 750 if (cursor_pos == line) { 751 cursor_argc = 0; 752 cursor_argo = 0; 753 } else if (cursor_pos != NULL) { 754 cursor_argc = margc; 755 cursor_argo = strlen(margv[margc-1]); 756 } 757 #endif /* !NO_EDITCOMPLETE */ 758 } 759 760 #ifdef NO_EDITCOMPLETE 761 #define INC_CHKCURSOR(x) (x)++ 762 #else /* !NO_EDITCOMPLETE */ 763 #define INC_CHKCURSOR(x) { (x)++ ; \ 764 if (x == cursor_pos) { \ 765 cursor_argc = margc; \ 766 cursor_argo = ap-argbase; \ 767 cursor_pos = NULL; \ 768 } } 769 770 #endif /* !NO_EDITCOMPLETE */ 771 772 /* 773 * Parse string into argbuf; 774 * implemented with FSM to 775 * handle quoting and strings 776 */ 777 char * 778 slurpstring(void) 779 { 780 int got_one = 0; 781 char *sb = stringbase; 782 char *ap = argbase; 783 char *tmp = argbase; /* will return this if token found */ 784 785 if (*sb == '!' || *sb == '$') { /* recognize ! as a token for shell */ 786 switch (slrflag) { /* and $ as token for macro invoke */ 787 case 0: 788 slrflag++; 789 INC_CHKCURSOR(stringbase); 790 return ((*sb == '!') ? "!" : "$"); 791 /* NOTREACHED */ 792 case 1: 793 slrflag++; 794 altarg = stringbase; 795 break; 796 default: 797 break; 798 } 799 } 800 801 S0: 802 switch (*sb) { 803 804 case '\0': 805 goto OUT; 806 807 case ' ': 808 case '\t': 809 INC_CHKCURSOR(sb); 810 goto S0; 811 812 default: 813 switch (slrflag) { 814 case 0: 815 slrflag++; 816 break; 817 case 1: 818 slrflag++; 819 altarg = sb; 820 break; 821 default: 822 break; 823 } 824 goto S1; 825 } 826 827 S1: 828 switch (*sb) { 829 830 case ' ': 831 case '\t': 832 case '\0': 833 goto OUT; /* end of token */ 834 835 case '\\': 836 INC_CHKCURSOR(sb); 837 goto S2; /* slurp next character */ 838 839 case '"': 840 INC_CHKCURSOR(sb); 841 goto S3; /* slurp quoted string */ 842 843 default: 844 *ap = *sb; /* add character to token */ 845 ap++; 846 INC_CHKCURSOR(sb); 847 got_one = 1; 848 goto S1; 849 } 850 851 S2: 852 switch (*sb) { 853 854 case '\0': 855 goto OUT; 856 857 default: 858 *ap = *sb; 859 ap++; 860 INC_CHKCURSOR(sb); 861 got_one = 1; 862 goto S1; 863 } 864 865 S3: 866 switch (*sb) { 867 868 case '\0': 869 goto OUT; 870 871 case '"': 872 INC_CHKCURSOR(sb); 873 goto S1; 874 875 default: 876 *ap = *sb; 877 ap++; 878 INC_CHKCURSOR(sb); 879 got_one = 1; 880 goto S3; 881 } 882 883 OUT: 884 if (got_one) 885 *ap++ = '\0'; 886 argbase = ap; /* update storage pointer */ 887 stringbase = sb; /* update scan pointer */ 888 if (got_one) { 889 return (tmp); 890 } 891 switch (slrflag) { 892 case 0: 893 slrflag++; 894 break; 895 case 1: 896 slrflag++; 897 altarg = NULL; 898 break; 899 default: 900 break; 901 } 902 return (NULL); 903 } 904 905 /* 906 * Help/usage command. 907 * Call each command handler with argc == 0 and argv[0] == name. 908 */ 909 void 910 help(int argc, char *argv[]) 911 { 912 struct cmd *c; 913 char *nargv[1], *p, *cmd; 914 int isusage; 915 916 cmd = argv[0]; 917 isusage = (strcmp(cmd, "usage") == 0); 918 if (argc == 0 || (isusage && argc == 1)) { 919 fprintf(ttyout, "usage: %s [command [...]]\n", cmd); 920 return; 921 } 922 if (argc == 1) { 923 StringList *buf; 924 925 buf = xsl_init(); 926 fprintf(ttyout, 927 "%sommands may be abbreviated. Commands are:\n\n", 928 proxy ? "Proxy c" : "C"); 929 for (c = cmdtab; (p = c->c_name) != NULL; c++) 930 if (!proxy || c->c_proxy) 931 xsl_add(buf, p); 932 list_vertical(buf); 933 sl_free(buf, 0); 934 return; 935 } 936 937 #define HELPINDENT ((int) sizeof("disconnect")) 938 939 while (--argc > 0) { 940 char *arg; 941 942 arg = *++argv; 943 c = getcmd(arg); 944 if (c == (struct cmd *)-1) 945 fprintf(ttyout, "?Ambiguous %s command `%s'\n", 946 cmd, arg); 947 else if (c == NULL) 948 fprintf(ttyout, "?Invalid %s command `%s'\n", 949 cmd, arg); 950 else { 951 if (isusage) { 952 nargv[0] = c->c_name; 953 (*c->c_handler)(0, nargv); 954 } else 955 fprintf(ttyout, "%-*s\t%s\n", HELPINDENT, 956 c->c_name, c->c_help); 957 } 958 } 959 } 960 961 struct option * 962 getoption(const char *name) 963 { 964 const char *p; 965 struct option *c; 966 967 if (name == NULL) 968 return (NULL); 969 for (c = optiontab; (p = c->name) != NULL; c++) { 970 if (strcasecmp(p, name) == 0) 971 return (c); 972 } 973 return (NULL); 974 } 975 976 char * 977 getoptionvalue(const char *name) 978 { 979 struct option *c; 980 981 if (name == NULL) 982 errx(1, "getoptionvalue() invoked with NULL name"); 983 c = getoption(name); 984 if (c != NULL) 985 return (c->value); 986 errx(1, "getoptionvalue() invoked with unknown option `%s'", name); 987 /* NOTREACHED */ 988 } 989 990 static void 991 setupoption(char *name, char *value, char *defaultvalue) 992 { 993 char *nargv[3]; 994 int overbose; 995 996 nargv[0] = "setupoption()"; 997 nargv[1] = name; 998 nargv[2] = (value ? value : defaultvalue); 999 overbose = verbose; 1000 verbose = 0; 1001 setoption(3, nargv); 1002 verbose = overbose; 1003 } 1004 1005 void 1006 usage(void) 1007 { 1008 const char *progname = getprogname(); 1009 1010 (void)fprintf(stderr, 1011 "usage: %s [-AadefginpRtvV] [-N netrc] [-o outfile] [-P port] [-r retry]\n" 1012 " [-T dir,max[,inc][[user@]host [port]]] [host:path[/]]\n" 1013 " [file:///file] [ftp://[user[:pass]@]host[:port]/path[/]]\n" 1014 " [http://[user[:pass]@]host[:port]/path] [...]\n" 1015 " %s -u url file [...]\n", progname, progname); 1016 exit(1); 1017 } 1018
Indexes created Thu Sep 25 08:09:54 GMT 2025