main.c revision 1.83
1 /* $NetBSD: main.c,v 1.83 2002/08/27 13:11:02 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 1996-2002 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 1.83 2002/08/27 13:11:02 christos 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 setprogname(argv[0]); 153 154 ftpport = "ftp"; 155 httpport = "http"; 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 upload_path = NULL; 192 isupload = 0; 193 reply_callback = NULL; 194 family = AF_UNSPEC; 195 196 netrc[0] = '\0'; 197 cp = getenv("NETRC"); 198 if (cp != NULL && strlcpy(netrc, cp, sizeof(netrc)) >= sizeof(netrc)) 199 errx(1, "$NETRC `%s': %s", cp, strerror(ENAMETOOLONG)); 200 201 /* 202 * Get the default socket buffer sizes if we don't already have them. 203 * It doesn't matter which socket we do this to, because on the first 204 * call no socket buffer sizes will have been modified, so we are 205 * guaranteed to get the system defaults. 206 */ 207 s = socket(AF_INET, SOCK_STREAM, 0); 208 if (s == -1) 209 err(1, "can't create socket"); 210 len = sizeof(rcvbuf_size); 211 if (getsockopt(s, SOL_SOCKET, SO_RCVBUF, (void *) &rcvbuf_size, &len) 212 < 0) 213 err(1, "unable to get default rcvbuf size"); 214 len = sizeof(sndbuf_size); 215 if (getsockopt(s, SOL_SOCKET, SO_SNDBUF, (void *) &sndbuf_size, &len) 216 < 0) 217 err(1, "unable to get default sndbuf size"); 218 (void)close(s); 219 /* sanity check returned buffer sizes */ 220 if (rcvbuf_size <= 0) 221 rcvbuf_size = 8192; 222 if (sndbuf_size <= 0) 223 sndbuf_size = 8192; 224 225 marg_sl = xsl_init(); 226 if ((tmpdir = getenv("TMPDIR")) == NULL) 227 tmpdir = _PATH_TMP; 228 229 /* Set default operation mode based on FTPMODE environment variable */ 230 if ((cp = getenv("FTPMODE")) != NULL) { 231 if (strcasecmp(cp, "passive") == 0) { 232 passivemode = 1; 233 activefallback = 0; 234 } else if (strcasecmp(cp, "active") == 0) { 235 passivemode = 0; 236 activefallback = 0; 237 } else if (strcasecmp(cp, "gate") == 0) { 238 gatemode = 1; 239 } else if (strcasecmp(cp, "auto") == 0) { 240 passivemode = 1; 241 activefallback = 1; 242 } else 243 warnx("unknown $FTPMODE '%s'; using defaults", cp); 244 } 245 246 if (strcmp(getprogname(), "pftp") == 0) { 247 passivemode = 1; 248 activefallback = 0; 249 } else if (strcmp(getprogname(), "gate-ftp") == 0) 250 gatemode = 1; 251 252 gateserver = getenv("FTPSERVER"); 253 if (gateserver == NULL || *gateserver == '\0') 254 gateserver = GATE_SERVER; 255 if (gatemode) { 256 if (*gateserver == '\0') { 257 warnx( 258 "Neither $FTPSERVER nor GATE_SERVER is defined; disabling gate-ftp"); 259 gatemode = 0; 260 } 261 } 262 263 cp = getenv("TERM"); 264 if (cp == NULL || strcmp(cp, "dumb") == 0) 265 dumbterm = 1; 266 else 267 dumbterm = 0; 268 fromatty = isatty(fileno(stdin)); 269 ttyout = stdout; 270 if (isatty(fileno(ttyout))) { 271 verbose = 1; /* verbose if to a tty */ 272 if (! dumbterm) { 273 #ifndef NO_EDITCOMPLETE 274 if (fromatty) /* editing mode on if tty is usable */ 275 editing = 1; 276 #endif 277 #ifndef NO_PROGRESS 278 if (foregroundproc()) 279 progress = 1; /* progress bar on if fg */ 280 #endif 281 } 282 } 283 284 while ((ch = getopt(argc, argv, "46AadefginN:o:pP:q:r:RtT:u:vV")) != -1) { 285 switch (ch) { 286 case '4': 287 family = AF_INET; 288 break; 289 290 case '6': 291 #ifdef INET6 292 family = AF_INET6; 293 #else 294 warnx("INET6 support is not available; ignoring -6"); 295 #endif 296 break; 297 298 case 'A': 299 activefallback = 0; 300 passivemode = 0; 301 break; 302 303 case 'a': 304 anonftp = 1; 305 break; 306 307 case 'd': 308 options |= SO_DEBUG; 309 debug++; 310 break; 311 312 case 'e': 313 #ifndef NO_EDITCOMPLETE 314 editing = 0; 315 #endif 316 break; 317 318 case 'f': 319 flushcache = 1; 320 break; 321 322 case 'g': 323 doglob = 0; 324 break; 325 326 case 'i': 327 interactive = 0; 328 break; 329 330 case 'n': 331 autologin = 0; 332 break; 333 334 case 'N': 335 if (strlcpy(netrc, optarg, sizeof(netrc)) 336 >= sizeof(netrc)) 337 errx(1, "%s: %s", optarg, 338 strerror(ENAMETOOLONG)); 339 break; 340 341 case 'o': 342 outfile = optarg; 343 if (strcmp(outfile, "-") == 0) 344 ttyout = stderr; 345 break; 346 347 case 'p': 348 passivemode = 1; 349 activefallback = 0; 350 break; 351 352 case 'P': 353 ftpport = optarg; 354 break; 355 356 case 'q': 357 quit_time = strtol(optarg, &ep, 10); 358 if (quit_time < 1 || *ep != '\0') 359 errx(1, "bad quit value: %s", optarg); 360 break; 361 362 case 'r': 363 retry_connect = strtol(optarg, &ep, 10); 364 if (retry_connect < 1 || *ep != '\0') 365 errx(1, "bad retry value: %s", optarg); 366 break; 367 368 case 'R': 369 restartautofetch = 1; 370 break; 371 372 case 't': 373 trace = 1; 374 break; 375 376 case 'T': 377 { 378 int targc; 379 char *targv[6], *oac; 380 381 /* look for `dir,max[,incr]' */ 382 targc = 0; 383 targv[targc++] = "-T"; 384 oac = xstrdup(optarg); 385 386 while ((cp = strsep(&oac, ",")) != NULL) { 387 if (*cp == '\0') { 388 warnx("bad throttle value: %s", optarg); 389 usage(); 390 /* NOTREACHED */ 391 } 392 targv[targc++] = cp; 393 if (targc >= 5) 394 break; 395 } 396 if (parserate(targc, targv, 1) == -1) 397 usage(); 398 free(oac); 399 break; 400 } 401 402 case 'u': 403 { 404 isupload = 1; 405 interactive = 0; 406 upload_path = xstrdup(optarg); 407 408 break; 409 } 410 411 case 'v': 412 progress = verbose = 1; 413 break; 414 415 case 'V': 416 progress = verbose = 0; 417 break; 418 419 default: 420 usage(); 421 } 422 } 423 /* set line buffering on ttyout */ 424 setvbuf(ttyout, NULL, _IOLBF, 0); 425 argc -= optind; 426 argv += optind; 427 428 cpend = 0; /* no pending replies */ 429 proxy = 0; /* proxy not active */ 430 crflag = 1; /* strip c.r. on ascii gets */ 431 sendport = -1; /* not using ports */ 432 433 /* 434 * Cache the user name and home directory. 435 */ 436 localhome = NULL; 437 localname = NULL; 438 anonuser = "anonymous"; 439 cp = getenv("HOME"); 440 if (! EMPTYSTRING(cp)) 441 localhome = xstrdup(cp); 442 pw = NULL; 443 cp = getlogin(); 444 if (cp != NULL) 445 pw = getpwnam(cp); 446 if (pw == NULL) 447 pw = getpwuid(getuid()); 448 if (pw != NULL) { 449 if (localhome == NULL && !EMPTYSTRING(pw->pw_dir)) 450 localhome = xstrdup(pw->pw_dir); 451 localname = xstrdup(pw->pw_name); 452 anonuser = localname; 453 } 454 if (netrc[0] == '\0' && localhome != NULL) { 455 if (strlcpy(netrc, localhome, sizeof(netrc)) >= sizeof(netrc) || 456 strlcat(netrc, "/.netrc", sizeof(netrc)) >= sizeof(netrc)) { 457 warnx("%s/.netrc: %s", localhome, 458 strerror(ENAMETOOLONG)); 459 netrc[0] = '\0'; 460 } 461 } 462 if (localhome == NULL) 463 localhome = xstrdup("/"); 464 465 /* 466 * Every anonymous FTP server I've encountered will accept the 467 * string "username@", and will append the hostname itself. We 468 * do this by default since many servers are picky about not 469 * having a FQDN in the anonymous password. 470 * - thorpej (at) netbsd.org 471 */ 472 len = strlen(anonuser) + 2; 473 anonpass = xmalloc(len); 474 (void)strlcpy(anonpass, anonuser, len); 475 (void)strlcat(anonpass, "@", len); 476 477 /* 478 * set all the defaults for options defined in 479 * struct option optiontab[] declared in cmdtab.c 480 */ 481 setupoption("anonpass", getenv("FTPANONPASS"), anonpass); 482 setupoption("ftp_proxy", getenv(FTP_PROXY), ""); 483 setupoption("http_proxy", getenv(HTTP_PROXY), ""); 484 setupoption("no_proxy", getenv(NO_PROXY), ""); 485 setupoption("pager", getenv("PAGER"), DEFAULTPAGER); 486 setupoption("prompt", getenv("FTPPROMPT"), DEFAULTPROMPT); 487 setupoption("rprompt", getenv("FTPRPROMPT"), DEFAULTRPROMPT); 488 489 free(anonpass); 490 491 setttywidth(0); 492 #ifdef SIGINFO 493 (void)xsignal(SIGINFO, psummary); 494 #endif 495 (void)xsignal(SIGQUIT, psummary); 496 (void)xsignal(SIGUSR1, crankrate); 497 (void)xsignal(SIGUSR2, crankrate); 498 (void)xsignal(SIGWINCH, setttywidth); 499 500 #ifdef __GNUC__ /* to shut up gcc warnings */ 501 (void)&argc; 502 (void)&argv; 503 #endif 504 505 if (argc > 0) { 506 if (isupload) { 507 rval = auto_put(argc, argv, upload_path); 508 exit(rval); 509 } else if (strchr(argv[0], ':') != NULL 510 && ! isipv6addr(argv[0])) { 511 rval = auto_fetch(argc, argv); 512 if (rval >= 0) /* -1 == connected and cd-ed */ 513 exit(rval); 514 } else { 515 char *xargv[4], *user, *host; 516 517 if (sigsetjmp(toplevel, 1)) 518 exit(0); 519 (void)xsignal(SIGINT, intr); 520 (void)xsignal(SIGPIPE, lostpeer); 521 user = NULL; 522 host = argv[0]; 523 cp = strchr(host, '@'); 524 if (cp) { 525 *cp = '\0'; 526 user = host; 527 host = cp + 1; 528 } 529 /* XXX discards const */ 530 xargv[0] = (char *)getprogname(); 531 xargv[1] = host; 532 xargv[2] = argv[1]; 533 xargv[3] = NULL; 534 do { 535 int oautologin; 536 537 oautologin = autologin; 538 if (user != NULL) { 539 anonftp = 0; 540 autologin = 0; 541 } 542 setpeer(argc+1, xargv); 543 autologin = oautologin; 544 if (connected == 1 && user != NULL) 545 (void)ftp_login(host, user, NULL); 546 if (!retry_connect) 547 break; 548 if (!connected) { 549 macnum = 0; 550 fprintf(ttyout, 551 "Retrying in %d seconds...\n", 552 retry_connect); 553 sleep(retry_connect); 554 } 555 } while (!connected); 556 retry_connect = 0; /* connected, stop hiding msgs */ 557 } 558 } 559 if (isupload) 560 usage(); 561 562 #ifndef NO_EDITCOMPLETE 563 controlediting(); 564 #endif /* !NO_EDITCOMPLETE */ 565 566 (void)sigsetjmp(toplevel, 1); 567 (void)xsignal(SIGINT, intr); 568 (void)xsignal(SIGPIPE, lostpeer); 569 for (;;) 570 cmdscanner(); 571 } 572 573 /* 574 * Generate a prompt 575 */ 576 char * 577 prompt(void) 578 { 579 static char **prompt; 580 static char buf[MAXPATHLEN]; 581 582 if (prompt == NULL) { 583 struct option *o; 584 585 o = getoption("prompt"); 586 if (o == NULL) 587 errx(1, "no such option `prompt'"); 588 prompt = &(o->value); 589 } 590 formatbuf(buf, sizeof(buf), *prompt ? *prompt : DEFAULTPROMPT); 591 return (buf); 592 } 593 594 /* 595 * Generate an rprompt 596 */ 597 char * 598 rprompt(void) 599 { 600 static char **rprompt; 601 static char buf[MAXPATHLEN]; 602 603 if (rprompt == NULL) { 604 struct option *o; 605 606 o = getoption("rprompt"); 607 if (o == NULL) 608 errx(1, "no such option `rprompt'"); 609 rprompt = &(o->value); 610 } 611 formatbuf(buf, sizeof(buf), *rprompt ? *rprompt : DEFAULTRPROMPT); 612 return (buf); 613 } 614 615 /* 616 * Command parser. 617 */ 618 void 619 cmdscanner(void) 620 { 621 struct cmd *c; 622 char *p; 623 int num; 624 625 for (;;) { 626 #ifndef NO_EDITCOMPLETE 627 if (!editing) { 628 #endif /* !NO_EDITCOMPLETE */ 629 if (fromatty) { 630 fputs(prompt(), ttyout); 631 p = rprompt(); 632 if (*p) 633 fprintf(ttyout, "%s ", p); 634 (void)fflush(ttyout); 635 } 636 if (fgets(line, sizeof(line), stdin) == NULL) { 637 if (fromatty) 638 putc('\n', ttyout); 639 quit(0, NULL); 640 } 641 num = strlen(line); 642 if (num == 0) 643 break; 644 if (line[--num] == '\n') { 645 if (num == 0) 646 break; 647 line[num] = '\0'; 648 } else if (num == sizeof(line) - 2) { 649 fputs("sorry, input line too long.\n", ttyout); 650 while ((num = getchar()) != '\n' && num != EOF) 651 /* void */; 652 break; 653 } /* else it was a line without a newline */ 654 #ifndef NO_EDITCOMPLETE 655 } else { 656 const char *buf; 657 HistEvent ev; 658 cursor_pos = NULL; 659 660 if ((buf = el_gets(el, &num)) == NULL || num == 0) { 661 if (fromatty) 662 putc('\n', ttyout); 663 quit(0, NULL); 664 } 665 if (buf[--num] == '\n') { 666 if (num == 0) 667 break; 668 } else if (num >= sizeof(line)) { 669 fputs("sorry, input line too long.\n", ttyout); 670 break; 671 } 672 memcpy(line, buf, num); 673 line[num] = '\0'; 674 history(hist, &ev, H_ENTER, buf); 675 } 676 #endif /* !NO_EDITCOMPLETE */ 677 678 makeargv(); 679 if (margc == 0) 680 continue; 681 c = getcmd(margv[0]); 682 if (c == (struct cmd *)-1) { 683 fputs("?Ambiguous command.\n", ttyout); 684 continue; 685 } 686 if (c == NULL) { 687 #if !defined(NO_EDITCOMPLETE) 688 /* 689 * attempt to el_parse() unknown commands. 690 * any command containing a ':' would be parsed 691 * as "[prog:]cmd ...", and will result in a 692 * false positive if prog != "ftp", so treat 693 * such commands as invalid. 694 */ 695 if (strchr(margv[0], ':') != NULL || 696 el_parse(el, margc, (const char **)margv) != 0) 697 #endif /* !NO_EDITCOMPLETE */ 698 fputs("?Invalid command.\n", ttyout); 699 continue; 700 } 701 if (c->c_conn && !connected) { 702 fputs("Not connected.\n", ttyout); 703 continue; 704 } 705 confirmrest = 0; 706 margv[0] = c->c_name; 707 (*c->c_handler)(margc, margv); 708 if (bell && c->c_bell) 709 (void)putc('\007', ttyout); 710 if (c->c_handler != help) 711 break; 712 } 713 (void)xsignal(SIGINT, intr); 714 (void)xsignal(SIGPIPE, lostpeer); 715 } 716 717 struct cmd * 718 getcmd(const char *name) 719 { 720 const char *p, *q; 721 struct cmd *c, *found; 722 int nmatches, longest; 723 724 if (name == NULL) 725 return (0); 726 727 longest = 0; 728 nmatches = 0; 729 found = 0; 730 for (c = cmdtab; (p = c->c_name) != NULL; c++) { 731 for (q = name; *q == *p++; q++) 732 if (*q == 0) /* exact match? */ 733 return (c); 734 if (!*q) { /* the name was a prefix */ 735 if (q - name > longest) { 736 longest = q - name; 737 nmatches = 1; 738 found = c; 739 } else if (q - name == longest) 740 nmatches++; 741 } 742 } 743 if (nmatches > 1) 744 return ((struct cmd *)-1); 745 return (found); 746 } 747 748 /* 749 * Slice a string up into argc/argv. 750 */ 751 752 int slrflag; 753 754 void 755 makeargv(void) 756 { 757 char *argp; 758 759 stringbase = line; /* scan from first of buffer */ 760 argbase = argbuf; /* store from first of buffer */ 761 slrflag = 0; 762 marg_sl->sl_cur = 0; /* reset to start of marg_sl */ 763 for (margc = 0; ; margc++) { 764 argp = slurpstring(); 765 xsl_add(marg_sl, argp); 766 if (argp == NULL) 767 break; 768 } 769 #ifndef NO_EDITCOMPLETE 770 if (cursor_pos == line) { 771 cursor_argc = 0; 772 cursor_argo = 0; 773 } else if (cursor_pos != NULL) { 774 cursor_argc = margc; 775 cursor_argo = strlen(margv[margc-1]); 776 } 777 #endif /* !NO_EDITCOMPLETE */ 778 } 779 780 #ifdef NO_EDITCOMPLETE 781 #define INC_CHKCURSOR(x) (x)++ 782 #else /* !NO_EDITCOMPLETE */ 783 #define INC_CHKCURSOR(x) { (x)++ ; \ 784 if (x == cursor_pos) { \ 785 cursor_argc = margc; \ 786 cursor_argo = ap-argbase; \ 787 cursor_pos = NULL; \ 788 } } 789 790 #endif /* !NO_EDITCOMPLETE */ 791 792 /* 793 * Parse string into argbuf; 794 * implemented with FSM to 795 * handle quoting and strings 796 */ 797 char * 798 slurpstring(void) 799 { 800 int got_one = 0; 801 char *sb = stringbase; 802 char *ap = argbase; 803 char *tmp = argbase; /* will return this if token found */ 804 805 if (*sb == '!' || *sb == '$') { /* recognize ! as a token for shell */ 806 switch (slrflag) { /* and $ as token for macro invoke */ 807 case 0: 808 slrflag++; 809 INC_CHKCURSOR(stringbase); 810 return ((*sb == '!') ? "!" : "$"); 811 /* NOTREACHED */ 812 case 1: 813 slrflag++; 814 altarg = stringbase; 815 break; 816 default: 817 break; 818 } 819 } 820 821 S0: 822 switch (*sb) { 823 824 case '\0': 825 goto OUT; 826 827 case ' ': 828 case '\t': 829 INC_CHKCURSOR(sb); 830 goto S0; 831 832 default: 833 switch (slrflag) { 834 case 0: 835 slrflag++; 836 break; 837 case 1: 838 slrflag++; 839 altarg = sb; 840 break; 841 default: 842 break; 843 } 844 goto S1; 845 } 846 847 S1: 848 switch (*sb) { 849 850 case ' ': 851 case '\t': 852 case '\0': 853 goto OUT; /* end of token */ 854 855 case '\\': 856 INC_CHKCURSOR(sb); 857 goto S2; /* slurp next character */ 858 859 case '"': 860 INC_CHKCURSOR(sb); 861 goto S3; /* slurp quoted string */ 862 863 default: 864 *ap = *sb; /* add character to token */ 865 ap++; 866 INC_CHKCURSOR(sb); 867 got_one = 1; 868 goto S1; 869 } 870 871 S2: 872 switch (*sb) { 873 874 case '\0': 875 goto OUT; 876 877 default: 878 *ap = *sb; 879 ap++; 880 INC_CHKCURSOR(sb); 881 got_one = 1; 882 goto S1; 883 } 884 885 S3: 886 switch (*sb) { 887 888 case '\0': 889 goto OUT; 890 891 case '"': 892 INC_CHKCURSOR(sb); 893 goto S1; 894 895 default: 896 *ap = *sb; 897 ap++; 898 INC_CHKCURSOR(sb); 899 got_one = 1; 900 goto S3; 901 } 902 903 OUT: 904 if (got_one) 905 *ap++ = '\0'; 906 argbase = ap; /* update storage pointer */ 907 stringbase = sb; /* update scan pointer */ 908 if (got_one) { 909 return (tmp); 910 } 911 switch (slrflag) { 912 case 0: 913 slrflag++; 914 break; 915 case 1: 916 slrflag++; 917 altarg = NULL; 918 break; 919 default: 920 break; 921 } 922 return (NULL); 923 } 924 925 /* 926 * Help/usage command. 927 * Call each command handler with argc == 0 and argv[0] == name. 928 */ 929 void 930 help(int argc, char *argv[]) 931 { 932 struct cmd *c; 933 char *nargv[1], *p, *cmd; 934 int isusage; 935 936 cmd = argv[0]; 937 isusage = (strcmp(cmd, "usage") == 0); 938 if (argc == 0 || (isusage && argc == 1)) { 939 fprintf(ttyout, "usage: %s [command [...]]\n", cmd); 940 return; 941 } 942 if (argc == 1) { 943 StringList *buf; 944 945 buf = xsl_init(); 946 fprintf(ttyout, 947 "%sommands may be abbreviated. Commands are:\n\n", 948 proxy ? "Proxy c" : "C"); 949 for (c = cmdtab; (p = c->c_name) != NULL; c++) 950 if (!proxy || c->c_proxy) 951 xsl_add(buf, p); 952 list_vertical(buf); 953 sl_free(buf, 0); 954 return; 955 } 956 957 #define HELPINDENT ((int) sizeof("disconnect")) 958 959 while (--argc > 0) { 960 char *arg; 961 962 arg = *++argv; 963 c = getcmd(arg); 964 if (c == (struct cmd *)-1) 965 fprintf(ttyout, "?Ambiguous %s command `%s'\n", 966 cmd, arg); 967 else if (c == NULL) 968 fprintf(ttyout, "?Invalid %s command `%s'\n", 969 cmd, arg); 970 else { 971 if (isusage) { 972 nargv[0] = c->c_name; 973 (*c->c_handler)(0, nargv); 974 } else 975 fprintf(ttyout, "%-*s\t%s\n", HELPINDENT, 976 c->c_name, c->c_help); 977 } 978 } 979 } 980 981 struct option * 982 getoption(const char *name) 983 { 984 const char *p; 985 struct option *c; 986 987 if (name == NULL) 988 return (NULL); 989 for (c = optiontab; (p = c->name) != NULL; c++) { 990 if (strcasecmp(p, name) == 0) 991 return (c); 992 } 993 return (NULL); 994 } 995 996 char * 997 getoptionvalue(const char *name) 998 { 999 struct option *c; 1000 1001 if (name == NULL) 1002 errx(1, "getoptionvalue() invoked with NULL name"); 1003 c = getoption(name); 1004 if (c != NULL) 1005 return (c->value); 1006 errx(1, "getoptionvalue() invoked with unknown option `%s'", name); 1007 /* NOTREACHED */ 1008 } 1009 1010 static void 1011 setupoption(char *name, char *value, char *defaultvalue) 1012 { 1013 char *nargv[3]; 1014 int overbose; 1015 1016 nargv[0] = "setupoption()"; 1017 nargv[1] = name; 1018 nargv[2] = (value ? value : defaultvalue); 1019 overbose = verbose; 1020 verbose = 0; 1021 setoption(3, nargv); 1022 verbose = overbose; 1023 } 1024 1025 void 1026 usage(void) 1027 { 1028 const char *progname = getprogname(); 1029 1030 (void)fprintf(stderr, 1031 "usage: %s [-46AadefginpRtvV] [-N netrc] [-o outfile] [-P port] [-r retry]\n" 1032 " [-T dir,max[,inc][[user@]host [port]]] [host:path[/]]\n" 1033 " [file:///file] [ftp://[user[:pass]@]host[:port]/path[/]]\n" 1034 " [http://[user[:pass]@]host[:port]/path] [...]\n" 1035 " %s -u url file [...]\n", progname, progname); 1036 exit(1); 1037 } 1038
Indexes created Thu Sep 25 16:09:42 GMT 2025