1 /* $NetBSD: main.c,v 1.17 2009/11/15 10:12:37 lukem Exp $ */ 2 /* from NetBSD: main.c,v 1.117 2009/07/13 19:05:41 roy Exp */ 3 4 /*- 5 * Copyright (c) 1996-2009 The NetBSD Foundation, Inc. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to The NetBSD Foundation 9 * by Luke Mewburn. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 /* 34 * Copyright (c) 1985, 1989, 1993, 1994 35 * The Regents of the University of California. All rights reserved. 36 * 37 * Redistribution and use in source and binary forms, with or without 38 * modification, are permitted provided that the following conditions 39 * are met: 40 * 1. Redistributions of source code must retain the above copyright 41 * notice, this list of conditions and the following disclaimer. 42 * 2. Redistributions in binary form must reproduce the above copyright 43 * notice, this list of conditions and the following disclaimer in the 44 * documentation and/or other materials provided with the distribution. 45 * 3. Neither the name of the University nor the names of its contributors 46 * may be used to endorse or promote products derived from this software 47 * without specific prior written permission. 48 * 49 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 50 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 51 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 52 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 53 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 54 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 55 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 56 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 57 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 58 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 59 * SUCH DAMAGE. 60 */ 61 62 /* 63 * Copyright (C) 1997 and 1998 WIDE Project. 64 * All rights reserved. 65 * 66 * Redistribution and use in source and binary forms, with or without 67 * modification, are permitted provided that the following conditions 68 * are met: 69 * 1. Redistributions of source code must retain the above copyright 70 * notice, this list of conditions and the following disclaimer. 71 * 2. Redistributions in binary form must reproduce the above copyright 72 * notice, this list of conditions and the following disclaimer in the 73 * documentation and/or other materials provided with the distribution. 74 * 3. Neither the name of the project nor the names of its contributors 75 * may be used to endorse or promote products derived from this software 76 * without specific prior written permission. 77 * 78 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 79 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 80 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 81 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 82 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 83 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 84 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 85 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 86 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 87 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 88 * SUCH DAMAGE. 89 */ 90 91 #include "tnftp.h" 92 93 #if 0 /* tnftp */ 94 95 #include <sys/cdefs.h> 96 #ifndef lint 97 __COPYRIGHT("@(#) Copyright (c) 1985, 1989, 1993, 1994\ 98 The Regents of the University of California. All rights reserved.\ 99 Copyright 1996-2008 The NetBSD Foundation, Inc. All rights reserved"); 100 #endif /* not lint */ 101 102 #ifndef lint 103 #if 0 104 static char sccsid[] = "@(#)main.c 8.6 (Berkeley) 10/9/94"; 105 #else 106 __RCSID(" NetBSD: main.c,v 1.117 2009/07/13 19:05:41 roy Exp "); 107 #endif 108 #endif /* not lint */ 109 110 /* 111 * FTP User Program -- Command Interface. 112 */ 113 #include <sys/types.h> 114 #include <sys/socket.h> 115 116 #include <err.h> 117 #include <errno.h> 118 #include <netdb.h> 119 #include <paths.h> 120 #include <pwd.h> 121 #include <signal.h> 122 #include <stdio.h> 123 #include <stdlib.h> 124 #include <string.h> 125 #include <time.h> 126 #include <unistd.h> 127 #include <locale.h> 128 129 #endif /* tnftp */ 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(const char *, const char *, const char *); 140 int main(int, char *[]); 141 142 int 143 main(int volatile argc, char **volatile argv) 144 { 145 int ch, rval; 146 struct passwd *pw; 147 char *cp, *ep, *anonpass, *upload_path, *src_addr; 148 const char *anonuser; 149 int dumbterm, s, isupload; 150 size_t len; 151 socklen_t slen; 152 153 tzset(); 154 #if 0 /* tnftp */ /* XXX */ 155 setlocale(LC_ALL, ""); 156 #endif /* tnftp */ 157 setprogname(argv[0]); 158 159 sigint_raised = 0; 160 161 ftpport = "ftp"; 162 httpport = "http"; 163 gateport = NULL; 164 cp = getenv("FTPSERVERPORT"); 165 if (cp != NULL) 166 gateport = cp; 167 else 168 gateport = "ftpgate"; 169 doglob = 1; 170 interactive = 1; 171 autologin = 1; 172 passivemode = 1; 173 activefallback = 1; 174 preserve = 1; 175 verbose = 0; 176 progress = 0; 177 gatemode = 0; 178 data = -1; 179 outfile = NULL; 180 restartautofetch = 0; 181 #ifndef NO_EDITCOMPLETE 182 editing = 0; 183 el = NULL; 184 hist = NULL; 185 #endif 186 bytes = 0; 187 mark = HASHBYTES; 188 rate_get = 0; 189 rate_get_incr = DEFAULTINCR; 190 rate_put = 0; 191 rate_put_incr = DEFAULTINCR; 192 #ifdef INET6 193 epsv4 = 1; 194 epsv6 = 1; 195 #else 196 epsv4 = 0; 197 epsv6 = 0; 198 #endif 199 epsv4bad = 0; 200 epsv6bad = 0; 201 src_addr = NULL; 202 upload_path = NULL; 203 isupload = 0; 204 reply_callback = NULL; 205 #ifdef INET6 206 family = AF_UNSPEC; 207 #else 208 family = AF_INET; /* force AF_INET if no INET6 support */ 209 #endif 210 211 netrc[0] = '\0'; 212 cp = getenv("NETRC"); 213 if (cp != NULL && strlcpy(netrc, cp, sizeof(netrc)) >= sizeof(netrc)) 214 errx(1, "$NETRC `%s': %s", cp, strerror(ENAMETOOLONG)); 215 216 /* 217 * Get the default socket buffer sizes if we don't already have them. 218 * It doesn't matter which socket we do this to, because on the first 219 * call no socket buffer sizes will have been modified, so we are 220 * guaranteed to get the system defaults. 221 */ 222 s = socket(AF_INET, SOCK_STREAM, 0); 223 if (s == -1) 224 err(1, "Can't create socket to determine default socket sizes"); 225 slen = sizeof(rcvbuf_size); 226 if (getsockopt(s, SOL_SOCKET, SO_RCVBUF, 227 (void *)&rcvbuf_size, &slen) == -1) 228 err(1, "Unable to get default rcvbuf size"); 229 slen = sizeof(sndbuf_size); 230 if (getsockopt(s, SOL_SOCKET, SO_SNDBUF, 231 (void *)&sndbuf_size, &slen) == -1) 232 err(1, "Unable to get default sndbuf size"); 233 (void)close(s); 234 /* sanity check returned buffer sizes */ 235 if (rcvbuf_size <= 0) 236 rcvbuf_size = 8 * 1024; 237 if (sndbuf_size <= 0) 238 sndbuf_size = 8 * 1024; 239 240 if (sndbuf_size > 8 * 1024 * 1024) 241 sndbuf_size = 8 * 1024 * 1024; 242 if (rcvbuf_size > 8 * 1024 * 1024) 243 rcvbuf_size = 8 * 1024 * 1024; 244 245 marg_sl = ftp_sl_init(); 246 if ((tmpdir = getenv("TMPDIR")) == NULL) 247 tmpdir = _PATH_TMP; 248 249 /* Set default operation mode based on FTPMODE environment variable */ 250 if ((cp = getenv("FTPMODE")) != NULL) { 251 if (strcasecmp(cp, "passive") == 0) { 252 passivemode = 1; 253 activefallback = 0; 254 } else if (strcasecmp(cp, "active") == 0) { 255 passivemode = 0; 256 activefallback = 0; 257 } else if (strcasecmp(cp, "gate") == 0) { 258 gatemode = 1; 259 } else if (strcasecmp(cp, "auto") == 0) { 260 passivemode = 1; 261 activefallback = 1; 262 } else 263 warnx("Unknown $FTPMODE `%s'; using defaults", cp); 264 } 265 266 if (strcmp(getprogname(), "pftp") == 0) { 267 passivemode = 1; 268 activefallback = 0; 269 } else if (strcmp(getprogname(), "gate-ftp") == 0) 270 gatemode = 1; 271 272 gateserver = getenv("FTPSERVER"); 273 if (gateserver == NULL || *gateserver == '\0') 274 gateserver = GATE_SERVER; 275 if (gatemode) { 276 if (*gateserver == '\0') { 277 warnx( 278 "Neither $FTPSERVER nor GATE_SERVER is defined; disabling gate-ftp"); 279 gatemode = 0; 280 } 281 } 282 283 cp = getenv("TERM"); 284 if (cp == NULL || strcmp(cp, "dumb") == 0) 285 dumbterm = 1; 286 else 287 dumbterm = 0; 288 fromatty = isatty(fileno(stdin)); 289 ttyout = stdout; 290 if (isatty(fileno(ttyout))) { 291 verbose = 1; /* verbose if to a tty */ 292 if (! dumbterm) { 293 #ifndef NO_EDITCOMPLETE 294 if (fromatty) /* editing mode on if tty is usable */ 295 editing = 1; 296 #endif 297 #ifndef NO_PROGRESS 298 if (foregroundproc()) 299 progress = 1; /* progress bar on if fg */ 300 #endif 301 } 302 } 303 304 while ((ch = getopt(argc, argv, "46AadefginN:o:pP:q:r:Rs:tT:u:vV")) != -1) { 305 switch (ch) { 306 case '4': 307 family = AF_INET; 308 break; 309 310 case '6': 311 #ifdef INET6 312 family = AF_INET6; 313 #else 314 warnx("INET6 support is not available; ignoring -6"); 315 #endif 316 break; 317 318 case 'A': 319 activefallback = 0; 320 passivemode = 0; 321 break; 322 323 case 'a': 324 anonftp = 1; 325 break; 326 327 case 'd': 328 options |= SO_DEBUG; 329 ftp_debug++; 330 break; 331 332 case 'e': 333 #ifndef NO_EDITCOMPLETE 334 editing = 0; 335 #endif 336 break; 337 338 case 'f': 339 flushcache = 1; 340 break; 341 342 case 'g': 343 doglob = 0; 344 break; 345 346 case 'i': 347 interactive = 0; 348 break; 349 350 case 'n': 351 autologin = 0; 352 break; 353 354 case 'N': 355 if (strlcpy(netrc, optarg, sizeof(netrc)) 356 >= sizeof(netrc)) 357 errx(1, "%s: %s", optarg, 358 strerror(ENAMETOOLONG)); 359 break; 360 361 case 'o': 362 outfile = optarg; 363 if (strcmp(outfile, "-") == 0) 364 ttyout = stderr; 365 break; 366 367 case 'p': 368 passivemode = 1; 369 activefallback = 0; 370 break; 371 372 case 'P': 373 ftpport = optarg; 374 break; 375 376 case 'q': 377 quit_time = strtol(optarg, &ep, 10); 378 if (quit_time < 1 || *ep != '\0') 379 errx(1, "Bad quit value: %s", optarg); 380 break; 381 382 case 'r': 383 retry_connect = strtol(optarg, &ep, 10); 384 if (retry_connect < 1 || *ep != '\0') 385 errx(1, "Bad retry value: %s", optarg); 386 break; 387 388 case 'R': 389 restartautofetch = 1; 390 break; 391 392 case 's': 393 src_addr = optarg; 394 break; 395 396 case 't': 397 trace = 1; 398 break; 399 400 case 'T': 401 { 402 int targc; 403 char *targv[6], *oac; 404 char cmdbuf[MAX_C_NAME]; 405 406 /* look for `dir,max[,incr]' */ 407 targc = 0; 408 (void)strlcpy(cmdbuf, "-T", sizeof(cmdbuf)); 409 targv[targc++] = cmdbuf; 410 oac = ftp_strdup(optarg); 411 412 while ((cp = strsep(&oac, ",")) != NULL) { 413 if (*cp == '\0') { 414 warnx("Bad throttle value `%s'", 415 optarg); 416 usage(); 417 /* NOTREACHED */ 418 } 419 targv[targc++] = cp; 420 if (targc >= 5) 421 break; 422 } 423 if (parserate(targc, targv, 1) == -1) 424 usage(); 425 free(oac); 426 break; 427 } 428 429 case 'u': 430 { 431 isupload = 1; 432 interactive = 0; 433 upload_path = ftp_strdup(optarg); 434 435 break; 436 } 437 438 case 'v': 439 progress = verbose = 1; 440 break; 441 442 case 'V': 443 progress = verbose = 0; 444 break; 445 446 default: 447 usage(); 448 } 449 } 450 /* set line buffering on ttyout */ 451 setvbuf(ttyout, NULL, _IOLBF, 0); 452 argc -= optind; 453 argv += optind; 454 455 cpend = 0; /* no pending replies */ 456 proxy = 0; /* proxy not active */ 457 crflag = 1; /* strip c.r. on ascii gets */ 458 sendport = -1; /* not using ports */ 459 460 if (src_addr != NULL) { 461 struct addrinfo hints; 462 int error; 463 464 memset(&hints, 0, sizeof(hints)); 465 hints.ai_family = family; 466 hints.ai_socktype = SOCK_STREAM; 467 hints.ai_flags = AI_PASSIVE; 468 error = getaddrinfo(src_addr, NULL, &hints, &bindai); 469 if (error) { 470 errx(1, "Can't lookup `%s': %s", src_addr, 471 (error == EAI_SYSTEM) ? strerror(errno) 472 : gai_strerror(error)); 473 } 474 } 475 476 /* 477 * Cache the user name and home directory. 478 */ 479 localhome = NULL; 480 localname = NULL; 481 anonuser = "anonymous"; 482 cp = getenv("HOME"); 483 if (! EMPTYSTRING(cp)) 484 localhome = ftp_strdup(cp); 485 pw = NULL; 486 cp = getlogin(); 487 if (cp != NULL) 488 pw = getpwnam(cp); 489 if (pw == NULL) 490 pw = getpwuid(getuid()); 491 if (pw != NULL) { 492 if (localhome == NULL && !EMPTYSTRING(pw->pw_dir)) 493 localhome = ftp_strdup(pw->pw_dir); 494 localname = ftp_strdup(pw->pw_name); 495 anonuser = localname; 496 } 497 if (netrc[0] == '\0' && localhome != NULL) { 498 if (strlcpy(netrc, localhome, sizeof(netrc)) >= sizeof(netrc) || 499 strlcat(netrc, "/.netrc", sizeof(netrc)) >= sizeof(netrc)) { 500 warnx("%s/.netrc: %s", localhome, 501 strerror(ENAMETOOLONG)); 502 netrc[0] = '\0'; 503 } 504 } 505 if (localhome == NULL) 506 localhome = ftp_strdup("/"); 507 508 /* 509 * Every anonymous FTP server I've encountered will accept the 510 * string "username@", and will append the hostname itself. We 511 * do this by default since many servers are picky about not 512 * having a FQDN in the anonymous password. 513 * - thorpej@NetBSD.org 514 */ 515 len = strlen(anonuser) + 2; 516 anonpass = ftp_malloc(len); 517 (void)strlcpy(anonpass, anonuser, len); 518 (void)strlcat(anonpass, "@", len); 519 520 /* 521 * set all the defaults for options defined in 522 * struct option optiontab[] declared in cmdtab.c 523 */ 524 setupoption("anonpass", getenv("FTPANONPASS"), anonpass); 525 setupoption("ftp_proxy", getenv(FTP_PROXY), ""); 526 setupoption("http_proxy", getenv(HTTP_PROXY), ""); 527 setupoption("no_proxy", getenv(NO_PROXY), ""); 528 setupoption("pager", getenv("PAGER"), DEFAULTPAGER); 529 setupoption("prompt", getenv("FTPPROMPT"), DEFAULTPROMPT); 530 setupoption("rprompt", getenv("FTPRPROMPT"), DEFAULTRPROMPT); 531 532 free(anonpass); 533 534 setttywidth(0); 535 #ifdef SIGINFO 536 (void)xsignal(SIGINFO, psummary); 537 #endif 538 (void)xsignal(SIGQUIT, psummary); 539 (void)xsignal(SIGUSR1, crankrate); 540 (void)xsignal(SIGUSR2, crankrate); 541 (void)xsignal(SIGWINCH, setttywidth); 542 543 if (argc > 0) { 544 if (isupload) { 545 rval = auto_put(argc, argv, upload_path); 546 sigint_or_rval_exit: 547 if (sigint_raised) { 548 (void)xsignal(SIGINT, SIG_DFL); 549 raise(SIGINT); 550 } 551 exit(rval); 552 } else if (strchr(argv[0], ':') != NULL 553 && ! isipv6addr(argv[0])) { 554 rval = auto_fetch(argc, argv); 555 if (rval >= 0) /* -1 == connected and cd-ed */ 556 goto sigint_or_rval_exit; 557 } else { 558 char *xargv[4], *uuser, *host; 559 char cmdbuf[MAXPATHLEN]; 560 561 if ((rval = sigsetjmp(toplevel, 1))) 562 goto sigint_or_rval_exit; 563 (void)xsignal(SIGINT, intr); 564 (void)xsignal(SIGPIPE, lostpeer); 565 uuser = NULL; 566 host = argv[0]; 567 cp = strchr(host, '@'); 568 if (cp) { 569 *cp = '\0'; 570 uuser = host; 571 host = cp + 1; 572 } 573 (void)strlcpy(cmdbuf, getprogname(), sizeof(cmdbuf)); 574 xargv[0] = cmdbuf; 575 xargv[1] = host; 576 xargv[2] = argv[1]; 577 xargv[3] = NULL; 578 do { 579 int oautologin; 580 581 oautologin = autologin; 582 if (uuser != NULL) { 583 anonftp = 0; 584 autologin = 0; 585 } 586 setpeer(argc+1, xargv); 587 autologin = oautologin; 588 if (connected == 1 && uuser != NULL) 589 (void)ftp_login(host, uuser, NULL); 590 if (!retry_connect) 591 break; 592 if (!connected) { 593 macnum = 0; 594 fprintf(ttyout, 595 "Retrying in %d seconds...\n", 596 retry_connect); 597 sleep(retry_connect); 598 } 599 } while (!connected); 600 retry_connect = 0; /* connected, stop hiding msgs */ 601 } 602 } 603 if (isupload) 604 usage(); 605 606 #ifndef NO_EDITCOMPLETE 607 controlediting(); 608 #endif /* !NO_EDITCOMPLETE */ 609 610 (void)sigsetjmp(toplevel, 1); 611 (void)xsignal(SIGINT, intr); 612 (void)xsignal(SIGPIPE, lostpeer); 613 for (;;) 614 cmdscanner(); 615 } 616 617 /* 618 * Generate a prompt 619 */ 620 char * 621 prompt(void) 622 { 623 static char **promptopt; 624 static char buf[MAXPATHLEN]; 625 626 if (promptopt == NULL) { 627 struct option *o; 628 629 o = getoption("prompt"); 630 if (o == NULL) 631 errx(1, "prompt: no such option `prompt'"); 632 promptopt = &(o->value); 633 } 634 formatbuf(buf, sizeof(buf), *promptopt ? *promptopt : DEFAULTPROMPT); 635 return (buf); 636 } 637 638 /* 639 * Generate an rprompt 640 */ 641 char * 642 rprompt(void) 643 { 644 static char **rpromptopt; 645 static char buf[MAXPATHLEN]; 646 647 if (rpromptopt == NULL) { 648 struct option *o; 649 650 o = getoption("rprompt"); 651 if (o == NULL) 652 errx(1, "rprompt: no such option `rprompt'"); 653 rpromptopt = &(o->value); 654 } 655 formatbuf(buf, sizeof(buf), *rpromptopt ? *rpromptopt : DEFAULTRPROMPT); 656 return (buf); 657 } 658 659 /* 660 * Command parser. 661 */ 662 void 663 cmdscanner(void) 664 { 665 struct cmd *c; 666 char *p; 667 #ifndef NO_EDITCOMPLETE 668 int ch; 669 size_t num; 670 #endif 671 int len; 672 char cmdbuf[MAX_C_NAME]; 673 674 for (;;) { 675 #ifndef NO_EDITCOMPLETE 676 if (!editing) { 677 #endif /* !NO_EDITCOMPLETE */ 678 if (fromatty) { 679 fputs(prompt(), ttyout); 680 p = rprompt(); 681 if (*p) 682 fprintf(ttyout, "%s ", p); 683 } 684 (void)fflush(ttyout); 685 len = get_line(stdin, line, sizeof(line), NULL); 686 switch (len) { 687 case -1: /* EOF */ 688 case -2: /* error */ 689 if (fromatty) 690 putc('\n', ttyout); 691 quit(0, NULL); 692 /* NOTREACHED */ 693 case -3: /* too long; try again */ 694 fputs("Sorry, input line is too long.\n", 695 ttyout); 696 continue; 697 case 0: /* empty; try again */ 698 continue; 699 default: /* all ok */ 700 break; 701 } 702 #ifndef NO_EDITCOMPLETE 703 } else { 704 const char *buf; 705 HistEvent ev; 706 cursor_pos = NULL; 707 708 buf = el_gets(el, &ch); 709 num = ch; 710 if (buf == NULL || num == 0) { 711 if (fromatty) 712 putc('\n', ttyout); 713 quit(0, NULL); 714 } 715 if (num >= sizeof(line)) { 716 fputs("Sorry, input line is too long.\n", 717 ttyout); 718 break; 719 } 720 memcpy(line, buf, num); 721 if (line[--num] == '\n') { 722 line[num] = '\0'; 723 if (num == 0) 724 break; 725 } 726 history(hist, &ev, H_ENTER, buf); 727 } 728 #endif /* !NO_EDITCOMPLETE */ 729 730 makeargv(); 731 if (margc == 0) 732 continue; 733 c = getcmd(margv[0]); 734 if (c == (struct cmd *)-1) { 735 fputs("?Ambiguous command.\n", ttyout); 736 continue; 737 } 738 if (c == NULL) { 739 #if !defined(NO_EDITCOMPLETE) 740 /* 741 * attempt to el_parse() unknown commands. 742 * any command containing a ':' would be parsed 743 * as "[prog:]cmd ...", and will result in a 744 * false positive if prog != "ftp", so treat 745 * such commands as invalid. 746 */ 747 if (strchr(margv[0], ':') != NULL || 748 !editing || 749 el_parse(el, margc, (const char **)margv) != 0) 750 #endif /* !NO_EDITCOMPLETE */ 751 fputs("?Invalid command.\n", ttyout); 752 continue; 753 } 754 if (c->c_conn && !connected) { 755 fputs("Not connected.\n", ttyout); 756 continue; 757 } 758 confirmrest = 0; 759 (void)strlcpy(cmdbuf, c->c_name, sizeof(cmdbuf)); 760 margv[0] = cmdbuf; 761 (*c->c_handler)(margc, margv); 762 if (bell && c->c_bell) 763 (void)putc('\007', ttyout); 764 if (c->c_handler != help) 765 break; 766 } 767 (void)xsignal(SIGINT, intr); 768 (void)xsignal(SIGPIPE, lostpeer); 769 } 770 771 struct cmd * 772 getcmd(const char *name) 773 { 774 const char *p, *q; 775 struct cmd *c, *found; 776 int nmatches, longest; 777 778 if (name == NULL) 779 return (0); 780 781 longest = 0; 782 nmatches = 0; 783 found = 0; 784 for (c = cmdtab; (p = c->c_name) != NULL; c++) { 785 for (q = name; *q == *p++; q++) 786 if (*q == 0) /* exact match? */ 787 return (c); 788 if (!*q) { /* the name was a prefix */ 789 if (q - name > longest) { 790 longest = q - name; 791 nmatches = 1; 792 found = c; 793 } else if (q - name == longest) 794 nmatches++; 795 } 796 } 797 if (nmatches > 1) 798 return ((struct cmd *)-1); 799 return (found); 800 } 801 802 /* 803 * Slice a string up into argc/argv. 804 */ 805 806 int slrflag; 807 808 void 809 makeargv(void) 810 { 811 char *argp; 812 813 stringbase = line; /* scan from first of buffer */ 814 argbase = argbuf; /* store from first of buffer */ 815 slrflag = 0; 816 marg_sl->sl_cur = 0; /* reset to start of marg_sl */ 817 for (margc = 0; ; margc++) { 818 argp = slurpstring(); 819 ftp_sl_add(marg_sl, argp); 820 if (argp == NULL) 821 break; 822 } 823 #ifndef NO_EDITCOMPLETE 824 if (cursor_pos == line) { 825 cursor_argc = 0; 826 cursor_argo = 0; 827 } else if (cursor_pos != NULL) { 828 cursor_argc = margc; 829 cursor_argo = strlen(margv[margc-1]); 830 } 831 #endif /* !NO_EDITCOMPLETE */ 832 } 833 834 #ifdef NO_EDITCOMPLETE 835 #define INC_CHKCURSOR(x) (x)++ 836 #else /* !NO_EDITCOMPLETE */ 837 #define INC_CHKCURSOR(x) { (x)++ ; \ 838 if (x == cursor_pos) { \ 839 cursor_argc = margc; \ 840 cursor_argo = ap-argbase; \ 841 cursor_pos = NULL; \ 842 } } 843 844 #endif /* !NO_EDITCOMPLETE */ 845 846 /* 847 * Parse string into argbuf; 848 * implemented with FSM to 849 * handle quoting and strings 850 */ 851 char * 852 slurpstring(void) 853 { 854 static char bangstr[2] = { '!', '\0' }; 855 static char dollarstr[2] = { '$', '\0' }; 856 int got_one = 0; 857 char *sb = stringbase; 858 char *ap = argbase; 859 char *tmp = argbase; /* will return this if token found */ 860 861 if (*sb == '!' || *sb == '$') { /* recognize ! as a token for shell */ 862 switch (slrflag) { /* and $ as token for macro invoke */ 863 case 0: 864 slrflag++; 865 INC_CHKCURSOR(stringbase); 866 return ((*sb == '!') ? bangstr : dollarstr); 867 /* NOTREACHED */ 868 case 1: 869 slrflag++; 870 altarg = stringbase; 871 break; 872 default: 873 break; 874 } 875 } 876 877 S0: 878 switch (*sb) { 879 880 case '\0': 881 goto OUT; 882 883 case ' ': 884 case '\t': 885 INC_CHKCURSOR(sb); 886 goto S0; 887 888 default: 889 switch (slrflag) { 890 case 0: 891 slrflag++; 892 break; 893 case 1: 894 slrflag++; 895 altarg = sb; 896 break; 897 default: 898 break; 899 } 900 goto S1; 901 } 902 903 S1: 904 switch (*sb) { 905 906 case ' ': 907 case '\t': 908 case '\0': 909 goto OUT; /* end of token */ 910 911 case '\\': 912 INC_CHKCURSOR(sb); 913 goto S2; /* slurp next character */ 914 915 case '"': 916 INC_CHKCURSOR(sb); 917 goto S3; /* slurp quoted string */ 918 919 default: 920 *ap = *sb; /* add character to token */ 921 ap++; 922 INC_CHKCURSOR(sb); 923 got_one = 1; 924 goto S1; 925 } 926 927 S2: 928 switch (*sb) { 929 930 case '\0': 931 goto OUT; 932 933 default: 934 *ap = *sb; 935 ap++; 936 INC_CHKCURSOR(sb); 937 got_one = 1; 938 goto S1; 939 } 940 941 S3: 942 switch (*sb) { 943 944 case '\0': 945 goto OUT; 946 947 case '"': 948 INC_CHKCURSOR(sb); 949 goto S1; 950 951 default: 952 *ap = *sb; 953 ap++; 954 INC_CHKCURSOR(sb); 955 got_one = 1; 956 goto S3; 957 } 958 959 OUT: 960 if (got_one) 961 *ap++ = '\0'; 962 argbase = ap; /* update storage pointer */ 963 stringbase = sb; /* update scan pointer */ 964 if (got_one) { 965 return (tmp); 966 } 967 switch (slrflag) { 968 case 0: 969 slrflag++; 970 break; 971 case 1: 972 slrflag++; 973 altarg = NULL; 974 break; 975 default: 976 break; 977 } 978 return (NULL); 979 } 980 981 /* 982 * Help/usage command. 983 * Call each command handler with argc == 0 and argv[0] == name. 984 */ 985 void 986 help(int argc, char *argv[]) 987 { 988 struct cmd *c; 989 char *nargv[1], *cmd; 990 const char *p; 991 int isusage; 992 993 cmd = argv[0]; 994 isusage = (strcmp(cmd, "usage") == 0); 995 if (argc == 0 || (isusage && argc == 1)) { 996 UPRINTF("usage: %s [command [...]]\n", cmd); 997 return; 998 } 999 if (argc == 1) { 1000 StringList *buf; 1001 1002 buf = ftp_sl_init(); 1003 fprintf(ttyout, 1004 "%sommands may be abbreviated. Commands are:\n\n", 1005 proxy ? "Proxy c" : "C"); 1006 for (c = cmdtab; (p = c->c_name) != NULL; c++) 1007 if (!proxy || c->c_proxy) 1008 ftp_sl_add(buf, ftp_strdup(p)); 1009 list_vertical(buf); 1010 sl_free(buf, 1); 1011 return; 1012 } 1013 1014 #define HELPINDENT ((int) sizeof("disconnect")) 1015 1016 while (--argc > 0) { 1017 char *arg; 1018 char cmdbuf[MAX_C_NAME]; 1019 1020 arg = *++argv; 1021 c = getcmd(arg); 1022 if (c == (struct cmd *)-1) 1023 fprintf(ttyout, "?Ambiguous %s command `%s'\n", 1024 cmd, arg); 1025 else if (c == NULL) 1026 fprintf(ttyout, "?Invalid %s command `%s'\n", 1027 cmd, arg); 1028 else { 1029 if (isusage) { 1030 (void)strlcpy(cmdbuf, c->c_name, sizeof(cmdbuf)); 1031 nargv[0] = cmdbuf; 1032 (*c->c_handler)(0, nargv); 1033 } else 1034 fprintf(ttyout, "%-*s\t%s\n", HELPINDENT, 1035 c->c_name, c->c_help); 1036 } 1037 } 1038 } 1039 1040 struct option * 1041 getoption(const char *name) 1042 { 1043 const char *p; 1044 struct option *c; 1045 1046 if (name == NULL) 1047 return (NULL); 1048 for (c = optiontab; (p = c->name) != NULL; c++) { 1049 if (strcasecmp(p, name) == 0) 1050 return (c); 1051 } 1052 return (NULL); 1053 } 1054 1055 char * 1056 getoptionvalue(const char *name) 1057 { 1058 struct option *c; 1059 1060 if (name == NULL) 1061 errx(1, "getoptionvalue: invoked with NULL name"); 1062 c = getoption(name); 1063 if (c != NULL) 1064 return (c->value); 1065 errx(1, "getoptionvalue: invoked with unknown option `%s'", name); 1066 /* NOTREACHED */ 1067 } 1068 1069 static void 1070 setupoption(const char *name, const char *value, const char *defaultvalue) 1071 { 1072 set_option(name, value ? value : defaultvalue, 0); 1073 } 1074 1075 void 1076 usage(void) 1077 { 1078 const char *progname = getprogname(); 1079 1080 (void)fprintf(stderr, 1081 "usage: %s [-46AadefginpRtVv] [-N netrc] [-o outfile] [-P port] [-q quittime]\n" 1082 " [-r retry] [-s srcaddr] [-T dir,max[,inc]]\n" 1083 " [[user@]host [port]] [host:path[/]] [file:///file]\n" 1084 " [ftp://[user[:pass]@]host[:port]/path[/]]\n" 1085 " [http://[user[:pass]@]host[:port]/path] [...]\n" 1086 " %s -u URL file [...]\n", progname, progname); 1087 exit(1); 1088 } 1089