main.c revision 1.109
1 /* $NetBSD: main.c,v 1.109 2008/05/10 00:05:31 skd Exp $ */ 2 3 /*- 4 * Copyright (c) 1996-2008 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /* 33 * Copyright (c) 1985, 1989, 1993, 1994 34 * The Regents of the University of California. All rights reserved. 35 * 36 * Redistribution and use in source and binary forms, with or without 37 * modification, are permitted provided that the following conditions 38 * are met: 39 * 1. Redistributions of source code must retain the above copyright 40 * notice, this list of conditions and the following disclaimer. 41 * 2. Redistributions in binary form must reproduce the above copyright 42 * notice, this list of conditions and the following disclaimer in the 43 * documentation and/or other materials provided with the distribution. 44 * 3. Neither the name of the University nor the names of its contributors 45 * may be used to endorse or promote products derived from this software 46 * without specific prior written permission. 47 * 48 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 49 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 50 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 51 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 52 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 53 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 54 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 55 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 56 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 57 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 58 * SUCH DAMAGE. 59 */ 60 61 /* 62 * Copyright (C) 1997 and 1998 WIDE Project. 63 * All rights reserved. 64 * 65 * Redistribution and use in source and binary forms, with or without 66 * modification, are permitted provided that the following conditions 67 * are met: 68 * 1. Redistributions of source code must retain the above copyright 69 * notice, this list of conditions and the following disclaimer. 70 * 2. Redistributions in binary form must reproduce the above copyright 71 * notice, this list of conditions and the following disclaimer in the 72 * documentation and/or other materials provided with the distribution. 73 * 3. Neither the name of the project nor the names of its contributors 74 * may be used to endorse or promote products derived from this software 75 * without specific prior written permission. 76 * 77 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 78 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 79 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 80 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 81 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 82 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 83 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 84 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 85 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 86 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 87 * SUCH DAMAGE. 88 */ 89 90 #include <sys/cdefs.h> 91 #ifndef lint 92 __COPYRIGHT("@(#) Copyright (c) 1985, 1989, 1993, 1994\n\ 93 The Regents of the University of California. All rights reserved.\n"); 94 #endif /* not lint */ 95 96 #ifndef lint 97 #if 0 98 static char sccsid[] = "@(#)main.c 8.6 (Berkeley) 10/9/94"; 99 #else 100 __RCSID("$NetBSD: main.c,v 1.109 2008/05/10 00:05:31 skd Exp $"); 101 #endif 102 #endif /* not lint */ 103 104 /* 105 * FTP User Program -- Command Interface. 106 */ 107 #include <sys/types.h> 108 #include <sys/socket.h> 109 110 #include <err.h> 111 #include <errno.h> 112 #include <netdb.h> 113 #include <paths.h> 114 #include <pwd.h> 115 #include <signal.h> 116 #include <stdio.h> 117 #include <stdlib.h> 118 #include <string.h> 119 #include <time.h> 120 #include <unistd.h> 121 #include <locale.h> 122 123 #define GLOBAL /* force GLOBAL decls in ftp_var.h to be declared */ 124 #include "ftp_var.h" 125 126 #define FTP_PROXY "ftp_proxy" /* env var with FTP proxy location */ 127 #define HTTP_PROXY "http_proxy" /* env var with HTTP proxy location */ 128 #define NO_PROXY "no_proxy" /* env var with list of non-proxied 129 * hosts, comma or space separated */ 130 131 static void setupoption(char *, char *, char *); 132 int main(int, char *[]); 133 134 int 135 main(int volatile argc, char **volatile argv) 136 { 137 int ch, rval; 138 struct passwd *pw; 139 char *cp, *ep, *anonuser, *anonpass, *upload_path, *src_addr; 140 int dumbterm, s, isupload; 141 size_t len; 142 socklen_t slen; 143 144 tzset(); 145 setlocale(LC_ALL, ""); 146 setprogname(argv[0]); 147 148 sigint_raised = 0; 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 epsv6 = 1; 184 #else 185 epsv4 = 0; 186 epsv6 = 0; 187 #endif 188 epsv4bad = 0; 189 epsv6bad = 0; 190 src_addr = NULL; 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 to determine default socket sizes"); 210 slen = sizeof(rcvbuf_size); 211 if (getsockopt(s, SOL_SOCKET, SO_RCVBUF, 212 (void *)&rcvbuf_size, &slen) == -1) 213 err(1, "Unable to get default rcvbuf size"); 214 slen = sizeof(sndbuf_size); 215 if (getsockopt(s, SOL_SOCKET, SO_SNDBUF, 216 (void *)&sndbuf_size, &slen) == -1) 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 = 8 * 1024; 222 if (sndbuf_size <= 0) 223 sndbuf_size = 8 * 1024; 224 225 if (sndbuf_size > 8 * 1024 * 1024) 226 sndbuf_size = 8 * 1024 * 1024; 227 if (rcvbuf_size > 8 * 1024 * 1024) 228 rcvbuf_size = 8 * 1024 * 1024; 229 230 marg_sl = ftp_sl_init(); 231 if ((tmpdir = getenv("TMPDIR")) == NULL) 232 tmpdir = _PATH_TMP; 233 234 /* Set default operation mode based on FTPMODE environment variable */ 235 if ((cp = getenv("FTPMODE")) != NULL) { 236 if (strcasecmp(cp, "passive") == 0) { 237 passivemode = 1; 238 activefallback = 0; 239 } else if (strcasecmp(cp, "active") == 0) { 240 passivemode = 0; 241 activefallback = 0; 242 } else if (strcasecmp(cp, "gate") == 0) { 243 gatemode = 1; 244 } else if (strcasecmp(cp, "auto") == 0) { 245 passivemode = 1; 246 activefallback = 1; 247 } else 248 warnx("Unknown $FTPMODE `%s'; using defaults", cp); 249 } 250 251 if (strcmp(getprogname(), "pftp") == 0) { 252 passivemode = 1; 253 activefallback = 0; 254 } else if (strcmp(getprogname(), "gate-ftp") == 0) 255 gatemode = 1; 256 257 gateserver = getenv("FTPSERVER"); 258 if (gateserver == NULL || *gateserver == '\0') 259 gateserver = GATE_SERVER; 260 if (gatemode) { 261 if (*gateserver == '\0') { 262 warnx( 263 "Neither $FTPSERVER nor GATE_SERVER is defined; disabling gate-ftp"); 264 gatemode = 0; 265 } 266 } 267 268 cp = getenv("TERM"); 269 if (cp == NULL || strcmp(cp, "dumb") == 0) 270 dumbterm = 1; 271 else 272 dumbterm = 0; 273 fromatty = isatty(fileno(stdin)); 274 ttyout = stdout; 275 if (isatty(fileno(ttyout))) { 276 verbose = 1; /* verbose if to a tty */ 277 if (! dumbterm) { 278 #ifndef NO_EDITCOMPLETE 279 if (fromatty) /* editing mode on if tty is usable */ 280 editing = 1; 281 #endif 282 #ifndef NO_PROGRESS 283 if (foregroundproc()) 284 progress = 1; /* progress bar on if fg */ 285 #endif 286 } 287 } 288 289 while ((ch = getopt(argc, argv, "46AadefginN:o:pP:q:r:Rs:tT:u:vV")) != -1) { 290 switch (ch) { 291 case '4': 292 family = AF_INET; 293 break; 294 295 case '6': 296 #ifdef INET6 297 family = AF_INET6; 298 #else 299 warnx("INET6 support is not available; ignoring -6"); 300 #endif 301 break; 302 303 case 'A': 304 activefallback = 0; 305 passivemode = 0; 306 break; 307 308 case 'a': 309 anonftp = 1; 310 break; 311 312 case 'd': 313 options |= SO_DEBUG; 314 ftp_debug++; 315 break; 316 317 case 'e': 318 #ifndef NO_EDITCOMPLETE 319 editing = 0; 320 #endif 321 break; 322 323 case 'f': 324 flushcache = 1; 325 break; 326 327 case 'g': 328 doglob = 0; 329 break; 330 331 case 'i': 332 interactive = 0; 333 break; 334 335 case 'n': 336 autologin = 0; 337 break; 338 339 case 'N': 340 if (strlcpy(netrc, optarg, sizeof(netrc)) 341 >= sizeof(netrc)) 342 errx(1, "%s: %s", optarg, 343 strerror(ENAMETOOLONG)); 344 break; 345 346 case 'o': 347 outfile = optarg; 348 if (strcmp(outfile, "-") == 0) 349 ttyout = stderr; 350 break; 351 352 case 'p': 353 passivemode = 1; 354 activefallback = 0; 355 break; 356 357 case 'P': 358 ftpport = optarg; 359 break; 360 361 case 'q': 362 quit_time = strtol(optarg, &ep, 10); 363 if (quit_time < 1 || *ep != '\0') 364 errx(1, "Bad quit value: %s", optarg); 365 break; 366 367 case 'r': 368 retry_connect = strtol(optarg, &ep, 10); 369 if (retry_connect < 1 || *ep != '\0') 370 errx(1, "Bad retry value: %s", optarg); 371 break; 372 373 case 'R': 374 restartautofetch = 1; 375 break; 376 377 case 's': 378 src_addr = optarg; 379 break; 380 381 case 't': 382 trace = 1; 383 break; 384 385 case 'T': 386 { 387 int targc; 388 char *targv[6], *oac; 389 390 /* look for `dir,max[,incr]' */ 391 targc = 0; 392 targv[targc++] = "-T"; 393 oac = ftp_strdup(optarg); 394 395 while ((cp = strsep(&oac, ",")) != NULL) { 396 if (*cp == '\0') { 397 warnx("Bad throttle value `%s'", 398 optarg); 399 usage(); 400 /* NOTREACHED */ 401 } 402 targv[targc++] = cp; 403 if (targc >= 5) 404 break; 405 } 406 if (parserate(targc, targv, 1) == -1) 407 usage(); 408 free(oac); 409 break; 410 } 411 412 case 'u': 413 { 414 isupload = 1; 415 interactive = 0; 416 upload_path = ftp_strdup(optarg); 417 418 break; 419 } 420 421 case 'v': 422 progress = verbose = 1; 423 break; 424 425 case 'V': 426 progress = verbose = 0; 427 break; 428 429 default: 430 usage(); 431 } 432 } 433 /* set line buffering on ttyout */ 434 setvbuf(ttyout, NULL, _IOLBF, 0); 435 argc -= optind; 436 argv += optind; 437 438 cpend = 0; /* no pending replies */ 439 proxy = 0; /* proxy not active */ 440 crflag = 1; /* strip c.r. on ascii gets */ 441 sendport = -1; /* not using ports */ 442 443 if (src_addr != NULL) { 444 struct addrinfo hints; 445 int error; 446 447 memset(&hints, 0, sizeof(hints)); 448 hints.ai_family = family; 449 hints.ai_socktype = SOCK_STREAM; 450 hints.ai_flags = AI_PASSIVE; 451 error = getaddrinfo(src_addr, NULL, &hints, &bindai); 452 if (error) { 453 errx(1, "Can't lookup `%s': %s", src_addr, 454 (error == EAI_SYSTEM) ? strerror(errno) 455 : gai_strerror(error)); 456 } 457 } 458 459 /* 460 * Cache the user name and home directory. 461 */ 462 localhome = NULL; 463 localname = NULL; 464 anonuser = "anonymous"; 465 cp = getenv("HOME"); 466 if (! EMPTYSTRING(cp)) 467 localhome = ftp_strdup(cp); 468 pw = NULL; 469 cp = getlogin(); 470 if (cp != NULL) 471 pw = getpwnam(cp); 472 if (pw == NULL) 473 pw = getpwuid(getuid()); 474 if (pw != NULL) { 475 if (localhome == NULL && !EMPTYSTRING(pw->pw_dir)) 476 localhome = ftp_strdup(pw->pw_dir); 477 localname = ftp_strdup(pw->pw_name); 478 anonuser = localname; 479 } 480 if (netrc[0] == '\0' && localhome != NULL) { 481 if (strlcpy(netrc, localhome, sizeof(netrc)) >= sizeof(netrc) || 482 strlcat(netrc, "/.netrc", sizeof(netrc)) >= sizeof(netrc)) { 483 warnx("%s/.netrc: %s", localhome, 484 strerror(ENAMETOOLONG)); 485 netrc[0] = '\0'; 486 } 487 } 488 if (localhome == NULL) 489 localhome = ftp_strdup("/"); 490 491 /* 492 * Every anonymous FTP server I've encountered will accept the 493 * string "username@", and will append the hostname itself. We 494 * do this by default since many servers are picky about not 495 * having a FQDN in the anonymous password. 496 * - thorpej (at) NetBSD.org 497 */ 498 len = strlen(anonuser) + 2; 499 anonpass = ftp_malloc(len); 500 (void)strlcpy(anonpass, anonuser, len); 501 (void)strlcat(anonpass, "@", len); 502 503 /* 504 * set all the defaults for options defined in 505 * struct option optiontab[] declared in cmdtab.c 506 */ 507 setupoption("anonpass", getenv("FTPANONPASS"), anonpass); 508 setupoption("ftp_proxy", getenv(FTP_PROXY), ""); 509 setupoption("http_proxy", getenv(HTTP_PROXY), ""); 510 setupoption("no_proxy", getenv(NO_PROXY), ""); 511 setupoption("pager", getenv("PAGER"), DEFAULTPAGER); 512 setupoption("prompt", getenv("FTPPROMPT"), DEFAULTPROMPT); 513 setupoption("rprompt", getenv("FTPRPROMPT"), DEFAULTRPROMPT); 514 515 free(anonpass); 516 517 setttywidth(0); 518 #ifdef SIGINFO 519 (void)xsignal(SIGINFO, psummary); 520 #endif 521 (void)xsignal(SIGQUIT, psummary); 522 (void)xsignal(SIGUSR1, crankrate); 523 (void)xsignal(SIGUSR2, crankrate); 524 (void)xsignal(SIGWINCH, setttywidth); 525 526 if (argc > 0) { 527 if (isupload) { 528 rval = auto_put(argc, argv, upload_path); 529 sigint_or_rval_exit: 530 if (sigint_raised) { 531 (void)xsignal(SIGINT, SIG_DFL); 532 raise(SIGINT); 533 } 534 exit(rval); 535 } else if (strchr(argv[0], ':') != NULL 536 && ! isipv6addr(argv[0])) { 537 rval = auto_fetch(argc, argv); 538 if (rval >= 0) /* -1 == connected and cd-ed */ 539 goto sigint_or_rval_exit; 540 } else { 541 char *xargv[4], *user, *host; 542 543 if ((rval = sigsetjmp(toplevel, 1))) 544 goto sigint_or_rval_exit; 545 (void)xsignal(SIGINT, intr); 546 (void)xsignal(SIGPIPE, lostpeer); 547 user = NULL; 548 host = argv[0]; 549 cp = strchr(host, '@'); 550 if (cp) { 551 *cp = '\0'; 552 user = host; 553 host = cp + 1; 554 } 555 /* XXX discards const */ 556 xargv[0] = (char *)getprogname(); 557 xargv[1] = host; 558 xargv[2] = argv[1]; 559 xargv[3] = NULL; 560 do { 561 int oautologin; 562 563 oautologin = autologin; 564 if (user != NULL) { 565 anonftp = 0; 566 autologin = 0; 567 } 568 setpeer(argc+1, xargv); 569 autologin = oautologin; 570 if (connected == 1 && user != NULL) 571 (void)ftp_login(host, user, NULL); 572 if (!retry_connect) 573 break; 574 if (!connected) { 575 macnum = 0; 576 fprintf(ttyout, 577 "Retrying in %d seconds...\n", 578 retry_connect); 579 sleep(retry_connect); 580 } 581 } while (!connected); 582 retry_connect = 0; /* connected, stop hiding msgs */ 583 } 584 } 585 if (isupload) 586 usage(); 587 588 #ifndef NO_EDITCOMPLETE 589 controlediting(); 590 #endif /* !NO_EDITCOMPLETE */ 591 592 (void)sigsetjmp(toplevel, 1); 593 (void)xsignal(SIGINT, intr); 594 (void)xsignal(SIGPIPE, lostpeer); 595 for (;;) 596 cmdscanner(); 597 } 598 599 /* 600 * Generate a prompt 601 */ 602 char * 603 prompt(void) 604 { 605 static char **prompt; 606 static char buf[MAXPATHLEN]; 607 608 if (prompt == NULL) { 609 struct option *o; 610 611 o = getoption("prompt"); 612 if (o == NULL) 613 errx(1, "prompt: no such option `prompt'"); 614 prompt = &(o->value); 615 } 616 formatbuf(buf, sizeof(buf), *prompt ? *prompt : DEFAULTPROMPT); 617 return (buf); 618 } 619 620 /* 621 * Generate an rprompt 622 */ 623 char * 624 rprompt(void) 625 { 626 static char **rprompt; 627 static char buf[MAXPATHLEN]; 628 629 if (rprompt == NULL) { 630 struct option *o; 631 632 o = getoption("rprompt"); 633 if (o == NULL) 634 errx(1, "rprompt: no such option `rprompt'"); 635 rprompt = &(o->value); 636 } 637 formatbuf(buf, sizeof(buf), *rprompt ? *rprompt : DEFAULTRPROMPT); 638 return (buf); 639 } 640 641 /* 642 * Command parser. 643 */ 644 void 645 cmdscanner(void) 646 { 647 struct cmd *c; 648 char *p; 649 #ifndef NO_EDITCOMPLETE 650 int ch; 651 #endif 652 size_t num; 653 654 for (;;) { 655 #ifndef NO_EDITCOMPLETE 656 if (!editing) { 657 #endif /* !NO_EDITCOMPLETE */ 658 if (fromatty) { 659 fputs(prompt(), ttyout); 660 p = rprompt(); 661 if (*p) 662 fprintf(ttyout, "%s ", p); 663 } 664 (void)fflush(ttyout); 665 num = getline(stdin, line, sizeof(line), NULL); 666 switch (num) { 667 case -1: /* EOF */ 668 case -2: /* error */ 669 if (fromatty) 670 putc('\n', ttyout); 671 quit(0, NULL); 672 /* NOTREACHED */ 673 case -3: /* too long; try again */ 674 fputs("Sorry, input line is too long.\n", 675 ttyout); 676 continue; 677 case 0: /* empty; try again */ 678 continue; 679 default: /* all ok */ 680 break; 681 } 682 #ifndef NO_EDITCOMPLETE 683 } else { 684 const char *buf; 685 HistEvent ev; 686 cursor_pos = NULL; 687 688 buf = el_gets(el, &ch); 689 num = ch; 690 if (buf == NULL || num == 0) { 691 if (fromatty) 692 putc('\n', ttyout); 693 quit(0, NULL); 694 } 695 if (num >= sizeof(line)) { 696 fputs("Sorry, input line is too long.\n", 697 ttyout); 698 break; 699 } 700 memcpy(line, buf, num); 701 if (line[--num] == '\n') { 702 line[num] = '\0'; 703 if (num == 0) 704 break; 705 } 706 history(hist, &ev, H_ENTER, buf); 707 } 708 #endif /* !NO_EDITCOMPLETE */ 709 710 makeargv(); 711 if (margc == 0) 712 continue; 713 c = getcmd(margv[0]); 714 if (c == (struct cmd *)-1) { 715 fputs("?Ambiguous command.\n", ttyout); 716 continue; 717 } 718 if (c == NULL) { 719 #if !defined(NO_EDITCOMPLETE) 720 /* 721 * attempt to el_parse() unknown commands. 722 * any command containing a ':' would be parsed 723 * as "[prog:]cmd ...", and will result in a 724 * false positive if prog != "ftp", so treat 725 * such commands as invalid. 726 */ 727 if (strchr(margv[0], ':') != NULL || 728 !editing || 729 el_parse(el, margc, (const char **)margv) != 0) 730 #endif /* !NO_EDITCOMPLETE */ 731 fputs("?Invalid command.\n", ttyout); 732 continue; 733 } 734 if (c->c_conn && !connected) { 735 fputs("Not connected.\n", ttyout); 736 continue; 737 } 738 confirmrest = 0; 739 margv[0] = c->c_name; 740 (*c->c_handler)(margc, margv); 741 if (bell && c->c_bell) 742 (void)putc('\007', ttyout); 743 if (c->c_handler != help) 744 break; 745 } 746 (void)xsignal(SIGINT, intr); 747 (void)xsignal(SIGPIPE, lostpeer); 748 } 749 750 struct cmd * 751 getcmd(const char *name) 752 { 753 const char *p, *q; 754 struct cmd *c, *found; 755 int nmatches, longest; 756 757 if (name == NULL) 758 return (0); 759 760 longest = 0; 761 nmatches = 0; 762 found = 0; 763 for (c = cmdtab; (p = c->c_name) != NULL; c++) { 764 for (q = name; *q == *p++; q++) 765 if (*q == 0) /* exact match? */ 766 return (c); 767 if (!*q) { /* the name was a prefix */ 768 if (q - name > longest) { 769 longest = q - name; 770 nmatches = 1; 771 found = c; 772 } else if (q - name == longest) 773 nmatches++; 774 } 775 } 776 if (nmatches > 1) 777 return ((struct cmd *)-1); 778 return (found); 779 } 780 781 /* 782 * Slice a string up into argc/argv. 783 */ 784 785 int slrflag; 786 787 void 788 makeargv(void) 789 { 790 char *argp; 791 792 stringbase = line; /* scan from first of buffer */ 793 argbase = argbuf; /* store from first of buffer */ 794 slrflag = 0; 795 marg_sl->sl_cur = 0; /* reset to start of marg_sl */ 796 for (margc = 0; ; margc++) { 797 argp = slurpstring(); 798 ftp_sl_add(marg_sl, argp); 799 if (argp == NULL) 800 break; 801 } 802 #ifndef NO_EDITCOMPLETE 803 if (cursor_pos == line) { 804 cursor_argc = 0; 805 cursor_argo = 0; 806 } else if (cursor_pos != NULL) { 807 cursor_argc = margc; 808 cursor_argo = strlen(margv[margc-1]); 809 } 810 #endif /* !NO_EDITCOMPLETE */ 811 } 812 813 #ifdef NO_EDITCOMPLETE 814 #define INC_CHKCURSOR(x) (x)++ 815 #else /* !NO_EDITCOMPLETE */ 816 #define INC_CHKCURSOR(x) { (x)++ ; \ 817 if (x == cursor_pos) { \ 818 cursor_argc = margc; \ 819 cursor_argo = ap-argbase; \ 820 cursor_pos = NULL; \ 821 } } 822 823 #endif /* !NO_EDITCOMPLETE */ 824 825 /* 826 * Parse string into argbuf; 827 * implemented with FSM to 828 * handle quoting and strings 829 */ 830 char * 831 slurpstring(void) 832 { 833 int got_one = 0; 834 char *sb = stringbase; 835 char *ap = argbase; 836 char *tmp = argbase; /* will return this if token found */ 837 838 if (*sb == '!' || *sb == '$') { /* recognize ! as a token for shell */ 839 switch (slrflag) { /* and $ as token for macro invoke */ 840 case 0: 841 slrflag++; 842 INC_CHKCURSOR(stringbase); 843 return ((*sb == '!') ? "!" : "$"); 844 /* NOTREACHED */ 845 case 1: 846 slrflag++; 847 altarg = stringbase; 848 break; 849 default: 850 break; 851 } 852 } 853 854 S0: 855 switch (*sb) { 856 857 case '\0': 858 goto OUT; 859 860 case ' ': 861 case '\t': 862 INC_CHKCURSOR(sb); 863 goto S0; 864 865 default: 866 switch (slrflag) { 867 case 0: 868 slrflag++; 869 break; 870 case 1: 871 slrflag++; 872 altarg = sb; 873 break; 874 default: 875 break; 876 } 877 goto S1; 878 } 879 880 S1: 881 switch (*sb) { 882 883 case ' ': 884 case '\t': 885 case '\0': 886 goto OUT; /* end of token */ 887 888 case '\\': 889 INC_CHKCURSOR(sb); 890 goto S2; /* slurp next character */ 891 892 case '"': 893 INC_CHKCURSOR(sb); 894 goto S3; /* slurp quoted string */ 895 896 default: 897 *ap = *sb; /* add character to token */ 898 ap++; 899 INC_CHKCURSOR(sb); 900 got_one = 1; 901 goto S1; 902 } 903 904 S2: 905 switch (*sb) { 906 907 case '\0': 908 goto OUT; 909 910 default: 911 *ap = *sb; 912 ap++; 913 INC_CHKCURSOR(sb); 914 got_one = 1; 915 goto S1; 916 } 917 918 S3: 919 switch (*sb) { 920 921 case '\0': 922 goto OUT; 923 924 case '"': 925 INC_CHKCURSOR(sb); 926 goto S1; 927 928 default: 929 *ap = *sb; 930 ap++; 931 INC_CHKCURSOR(sb); 932 got_one = 1; 933 goto S3; 934 } 935 936 OUT: 937 if (got_one) 938 *ap++ = '\0'; 939 argbase = ap; /* update storage pointer */ 940 stringbase = sb; /* update scan pointer */ 941 if (got_one) { 942 return (tmp); 943 } 944 switch (slrflag) { 945 case 0: 946 slrflag++; 947 break; 948 case 1: 949 slrflag++; 950 altarg = NULL; 951 break; 952 default: 953 break; 954 } 955 return (NULL); 956 } 957 958 /* 959 * Help/usage command. 960 * Call each command handler with argc == 0 and argv[0] == name. 961 */ 962 void 963 help(int argc, char *argv[]) 964 { 965 struct cmd *c; 966 char *nargv[1], *p, *cmd; 967 int isusage; 968 969 cmd = argv[0]; 970 isusage = (strcmp(cmd, "usage") == 0); 971 if (argc == 0 || (isusage && argc == 1)) { 972 UPRINTF("usage: %s [command [...]]\n", cmd); 973 return; 974 } 975 if (argc == 1) { 976 StringList *buf; 977 978 buf = ftp_sl_init(); 979 fprintf(ttyout, 980 "%sommands may be abbreviated. Commands are:\n\n", 981 proxy ? "Proxy c" : "C"); 982 for (c = cmdtab; (p = c->c_name) != NULL; c++) 983 if (!proxy || c->c_proxy) 984 ftp_sl_add(buf, p); 985 list_vertical(buf); 986 sl_free(buf, 0); 987 return; 988 } 989 990 #define HELPINDENT ((int) sizeof("disconnect")) 991 992 while (--argc > 0) { 993 char *arg; 994 995 arg = *++argv; 996 c = getcmd(arg); 997 if (c == (struct cmd *)-1) 998 fprintf(ttyout, "?Ambiguous %s command `%s'\n", 999 cmd, arg); 1000 else if (c == NULL) 1001 fprintf(ttyout, "?Invalid %s command `%s'\n", 1002 cmd, arg); 1003 else { 1004 if (isusage) { 1005 nargv[0] = c->c_name; 1006 (*c->c_handler)(0, nargv); 1007 } else 1008 fprintf(ttyout, "%-*s\t%s\n", HELPINDENT, 1009 c->c_name, c->c_help); 1010 } 1011 } 1012 } 1013 1014 struct option * 1015 getoption(const char *name) 1016 { 1017 const char *p; 1018 struct option *c; 1019 1020 if (name == NULL) 1021 return (NULL); 1022 for (c = optiontab; (p = c->name) != NULL; c++) { 1023 if (strcasecmp(p, name) == 0) 1024 return (c); 1025 } 1026 return (NULL); 1027 } 1028 1029 char * 1030 getoptionvalue(const char *name) 1031 { 1032 struct option *c; 1033 1034 if (name == NULL) 1035 errx(1, "getoptionvalue: invoked with NULL name"); 1036 c = getoption(name); 1037 if (c != NULL) 1038 return (c->value); 1039 errx(1, "getoptionvalue: invoked with unknown option `%s'", name); 1040 /* NOTREACHED */ 1041 } 1042 1043 static void 1044 setupoption(char *name, char *value, char *defaultvalue) 1045 { 1046 char *nargv[3]; 1047 int overbose; 1048 1049 nargv[0] = "setupoption()"; 1050 nargv[1] = name; 1051 nargv[2] = (value ? value : defaultvalue); 1052 overbose = verbose; 1053 verbose = 0; 1054 setoption(3, nargv); 1055 verbose = overbose; 1056 } 1057 1058 void 1059 usage(void) 1060 { 1061 const char *progname = getprogname(); 1062 1063 (void)fprintf(stderr, 1064 "usage: %s [-46AadefginpRtVv] [-N netrc] [-o outfile] [-P port] [-q quittime]\n" 1065 " [-r retry] [-s srcaddr] [-T dir,max[,inc]]\n" 1066 " [[user@]host [port]] [host:path[/]] [file:///file]\n" 1067 " [ftp://[user[:pass]@]host[:port]/path[/]]\n" 1068 " [http://[user[:pass]@]host[:port]/path] [...]\n" 1069 " %s -u URL file [...]\n", progname, progname); 1070 exit(1); 1071 } 1072
Indexes created Fri Sep 26 20:09:58 GMT 2025