1 /* $NetBSD: main.c,v 1.127 2020/07/18 03:00:37 lukem Exp $ */ 2 3 /*- 4 * Copyright (c) 1996-2015 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\ 93 The Regents of the University of California. All rights reserved.\ 94 Copyright 1996-2015 The NetBSD Foundation, Inc. All rights reserved"); 95 #endif /* not lint */ 96 97 #ifndef lint 98 #if 0 99 static char sccsid[] = "@(#)main.c 8.6 (Berkeley) 10/9/94"; 100 #else 101 __RCSID("$NetBSD: main.c,v 1.127 2020/07/18 03:00:37 lukem Exp $"); 102 #endif 103 #endif /* not lint */ 104 105 /* 106 * FTP User Program -- Command Interface. 107 */ 108 #include <sys/types.h> 109 #include <sys/socket.h> 110 111 #include <err.h> 112 #include <errno.h> 113 #include <netdb.h> 114 #include <paths.h> 115 #include <pwd.h> 116 #include <signal.h> 117 #include <stdio.h> 118 #include <stdlib.h> 119 #include <string.h> 120 #include <time.h> 121 #include <unistd.h> 122 #include <locale.h> 123 124 #define GLOBAL /* force GLOBAL decls in ftp_var.h to be declared */ 125 #include "ftp_var.h" 126 127 #define FTP_PROXY "ftp_proxy" /* env var with FTP proxy location */ 128 #define HTTP_PROXY "http_proxy" /* env var with HTTP proxy location */ 129 #define HTTPS_PROXY "https_proxy" /* env var with HTTPS proxy location */ 130 #define NO_PROXY "no_proxy" /* env var with list of non-proxied 131 * hosts, comma or space separated */ 132 133 static int usage(void); 134 static int usage_help(void); 135 static void setupoption(const char *, const char *, const char *); 136 137 int 138 main(int volatile argc, char **volatile argv) 139 { 140 int ch, rval; 141 struct passwd *pw; 142 char *cp, *ep, *anonpass, *upload_path, *src_addr; 143 const char *anonuser; 144 int dumbterm, isupload; 145 size_t len; 146 147 tzset(); 148 setlocale(LC_ALL, ""); 149 setprogname(argv[0]); 150 151 sigint_raised = 0; 152 153 ftpport = "ftp"; 154 httpport = "http"; 155 #ifdef WITH_SSL 156 httpsport = "https"; 157 #endif 158 gateport = NULL; 159 cp = getenv("FTPSERVERPORT"); 160 if (cp != NULL) 161 gateport = cp; 162 else 163 gateport = "ftpgate"; 164 doglob = 1; 165 interactive = 1; 166 autologin = 1; 167 passivemode = 1; 168 activefallback = 1; 169 preserve = 1; 170 verbose = 0; 171 progress = 0; 172 gatemode = 0; 173 data = -1; 174 outfile = NULL; 175 restartautofetch = 0; 176 #ifndef NO_EDITCOMPLETE 177 editing = 0; 178 el = NULL; 179 hist = NULL; 180 #endif 181 bytes = 0; 182 mark = HASHBYTES; 183 rate_get = 0; 184 rate_get_incr = DEFAULTINCR; 185 rate_put = 0; 186 rate_put_incr = DEFAULTINCR; 187 #ifdef INET6 188 epsv4 = 1; 189 epsv6 = 1; 190 #else 191 epsv4 = 0; 192 epsv6 = 0; 193 #endif 194 epsv4bad = 0; 195 epsv6bad = 0; 196 src_addr = NULL; 197 upload_path = NULL; 198 isupload = 0; 199 reply_callback = NULL; 200 #ifdef INET6 201 family = AF_UNSPEC; 202 #else 203 family = AF_INET; /* force AF_INET if no INET6 support */ 204 #endif 205 206 netrc[0] = '\0'; 207 cp = getenv("NETRC"); 208 if (cp != NULL && strlcpy(netrc, cp, sizeof(netrc)) >= sizeof(netrc)) 209 errx(1, "$NETRC `%s': %s", cp, strerror(ENAMETOOLONG)); 210 211 marg_sl = ftp_sl_init(); 212 if ((tmpdir = getenv("TMPDIR")) == NULL) 213 tmpdir = _PATH_TMP; 214 215 /* Set default operation mode based on FTPMODE environment variable */ 216 if ((cp = getenv("FTPMODE")) != NULL) { 217 if (strcasecmp(cp, "passive") == 0) { 218 passivemode = 1; 219 activefallback = 0; 220 } else if (strcasecmp(cp, "active") == 0) { 221 passivemode = 0; 222 activefallback = 0; 223 } else if (strcasecmp(cp, "gate") == 0) { 224 gatemode = 1; 225 } else if (strcasecmp(cp, "auto") == 0) { 226 passivemode = 1; 227 activefallback = 1; 228 } else 229 warnx("Unknown $FTPMODE `%s'; using defaults", cp); 230 } 231 232 if (strcmp(getprogname(), "pftp") == 0) { 233 passivemode = 1; 234 activefallback = 0; 235 } else if (strcmp(getprogname(), "gate-ftp") == 0) 236 gatemode = 1; 237 238 gateserver = getenv("FTPSERVER"); 239 if (gateserver == NULL || *gateserver == '\0') 240 gateserver = GATE_SERVER; 241 if (gatemode) { 242 if (*gateserver == '\0') { 243 warnx( 244 "Neither $FTPSERVER nor GATE_SERVER is defined; disabling gate-ftp"); 245 gatemode = 0; 246 } 247 } 248 249 cp = getenv("TERM"); 250 if (cp == NULL || strcmp(cp, "dumb") == 0) 251 dumbterm = 1; 252 else 253 dumbterm = 0; 254 fromatty = isatty(fileno(stdin)); 255 ttyout = stdout; 256 if (isatty(fileno(ttyout))) { 257 verbose = 1; /* verbose if to a tty */ 258 if (! dumbterm) { 259 #ifndef NO_EDITCOMPLETE 260 if (fromatty) /* editing mode on if tty is usable */ 261 editing = 1; 262 #endif 263 #ifndef NO_PROGRESS 264 if (foregroundproc()) 265 progress = 1; /* progress bar on if fg */ 266 #endif 267 } 268 } 269 270 while ((ch = getopt(argc, argv, "?46AadefginN:o:pP:q:r:Rs:tT:u:vVx:")) != -1) { 271 switch (ch) { 272 case '4': 273 family = AF_INET; 274 break; 275 276 case '6': 277 #ifdef INET6 278 family = AF_INET6; 279 #else 280 warnx("INET6 support is not available; ignoring -6"); 281 #endif 282 break; 283 284 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 ftp_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 = ftp_strdup(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 'q': 343 quit_time = strtol(optarg, &ep, 10); 344 if (quit_time < 1 || *ep != '\0') 345 errx(1, "Bad quit value: %s", optarg); 346 break; 347 348 case 'r': 349 retry_connect = strtol(optarg, &ep, 10); 350 if (retry_connect < 1 || *ep != '\0') 351 errx(1, "Bad retry value: %s", optarg); 352 break; 353 354 case 'R': 355 restartautofetch = 1; 356 break; 357 358 case 's': 359 src_addr = optarg; 360 break; 361 362 case 't': 363 trace = 1; 364 break; 365 366 case 'T': 367 { 368 int targc; 369 char *targv[6], *oac; 370 char cmdbuf[MAX_C_NAME]; 371 372 /* look for `dir,max[,incr]' */ 373 targc = 0; 374 (void)strlcpy(cmdbuf, "-T", sizeof(cmdbuf)); 375 targv[targc++] = cmdbuf; 376 oac = ftp_strdup(optarg); 377 378 while ((cp = strsep(&oac, ",")) != NULL) { 379 if (*cp == '\0') { 380 warnx("Bad throttle value `%s'", 381 optarg); 382 return usage(); 383 } 384 targv[targc++] = cp; 385 if (targc >= 5) 386 break; 387 } 388 if (parserate(targc, targv, 1) == -1) { 389 return usage(); 390 } 391 free(oac); 392 break; 393 } 394 395 case 'u': 396 { 397 isupload = 1; 398 interactive = 0; 399 upload_path = ftp_strdup(optarg); 400 401 break; 402 } 403 404 case 'v': 405 progress = verbose = 1; 406 break; 407 408 case 'V': 409 progress = verbose = 0; 410 break; 411 412 case 'x': 413 sndbuf_size = strsuftoi(optarg); 414 if (sndbuf_size < 1) 415 errx(1, "Bad xferbuf value: %s", optarg); 416 rcvbuf_size = sndbuf_size; 417 break; 418 419 case '?': 420 if (optopt == '?') { 421 return usage_help(); 422 } 423 return usage(); 424 425 default: 426 errx(1, "unimplemented option -%c", ch); 427 } 428 } 429 /* set line buffering on ttyout */ 430 setvbuf(ttyout, NULL, _IOLBF, 0); 431 argc -= optind; 432 argv += optind; 433 434 cpend = 0; /* no pending replies */ 435 proxy = 0; /* proxy not active */ 436 crflag = 1; /* strip c.r. on ascii gets */ 437 sendport = -1; /* not using ports */ 438 439 if (src_addr != NULL) { 440 struct addrinfo hints; 441 int error; 442 443 memset(&hints, 0, sizeof(hints)); 444 hints.ai_family = family; 445 hints.ai_socktype = SOCK_STREAM; 446 hints.ai_flags = AI_PASSIVE; 447 error = getaddrinfo(src_addr, NULL, &hints, &bindai); 448 if (error) { 449 errx(1, "Can't lookup `%s': %s", src_addr, 450 (error == EAI_SYSTEM) ? strerror(errno) 451 : gai_strerror(error)); 452 } 453 } 454 455 /* 456 * Cache the user name and home directory. 457 */ 458 localhome = NULL; 459 localname = NULL; 460 anonuser = "anonymous"; 461 cp = getenv("HOME"); 462 if (! EMPTYSTRING(cp)) 463 localhome = ftp_strdup(cp); 464 pw = NULL; 465 cp = getlogin(); 466 if (cp != NULL) 467 pw = getpwnam(cp); 468 if (pw == NULL) 469 pw = getpwuid(getuid()); 470 if (pw != NULL) { 471 if (localhome == NULL && !EMPTYSTRING(pw->pw_dir)) 472 localhome = ftp_strdup(pw->pw_dir); 473 localname = ftp_strdup(pw->pw_name); 474 } 475 if (netrc[0] == '\0' && localhome != NULL) { 476 if (strlcpy(netrc, localhome, sizeof(netrc)) >= sizeof(netrc) || 477 strlcat(netrc, "/.netrc", sizeof(netrc)) >= sizeof(netrc)) { 478 warnx("%s/.netrc: %s", localhome, 479 strerror(ENAMETOOLONG)); 480 netrc[0] = '\0'; 481 } 482 } 483 if (localhome == NULL) 484 localhome = ftp_strdup("/"); 485 486 /* 487 * Every anonymous FTP server I've encountered will accept the 488 * string "username@", and will append the hostname itself. We 489 * do this by default since many servers are picky about not 490 * having a FQDN in the anonymous password. 491 * - thorpej@NetBSD.org 492 */ 493 len = strlen(anonuser) + 2; 494 anonpass = ftp_malloc(len); 495 (void)strlcpy(anonpass, anonuser, len); 496 (void)strlcat(anonpass, "@", len); 497 498 /* 499 * set all the defaults for options defined in 500 * struct option optiontab[] declared in cmdtab.c 501 */ 502 setupoption("anonpass", getenv("FTPANONPASS"), anonpass); 503 setupoption("ftp_proxy", getenv(FTP_PROXY), ""); 504 setupoption("http_proxy", getenv(HTTP_PROXY), ""); 505 setupoption("https_proxy", getenv(HTTPS_PROXY), ""); 506 setupoption("no_proxy", getenv(NO_PROXY), ""); 507 setupoption("pager", getenv("PAGER"), DEFAULTPAGER); 508 setupoption("prompt", getenv("FTPPROMPT"), DEFAULTPROMPT); 509 setupoption("rprompt", getenv("FTPRPROMPT"), DEFAULTRPROMPT); 510 511 free(anonpass); 512 513 setttywidth(0); 514 #ifdef SIGINFO 515 (void)xsignal(SIGINFO, psummary); 516 #endif 517 (void)xsignal(SIGQUIT, psummary); 518 (void)xsignal(SIGUSR1, crankrate); 519 (void)xsignal(SIGUSR2, crankrate); 520 (void)xsignal(SIGWINCH, setttywidth); 521 522 if (argc > 0) { 523 if (isupload) { 524 rval = auto_put(argc, argv, upload_path); 525 sigint_or_rval_exit: 526 if (sigint_raised) { 527 (void)xsignal(SIGINT, SIG_DFL); 528 raise(SIGINT); 529 } 530 exit(rval); 531 } else if (strchr(argv[0], ':') != NULL 532 && ! isipv6addr(argv[0])) { 533 rval = auto_fetch(argc, argv); 534 if (rval >= 0) /* -1 == connected and cd-ed */ 535 goto sigint_or_rval_exit; 536 } else { 537 char *xargv[4], *uuser, *host; 538 char cmdbuf[MAXPATHLEN]; 539 540 if ((rval = sigsetjmp(toplevel, 1))) 541 goto sigint_or_rval_exit; 542 (void)xsignal(SIGINT, intr); 543 (void)xsignal(SIGPIPE, lostpeer); 544 uuser = NULL; 545 host = argv[0]; 546 cp = strchr(host, '@'); 547 if (cp) { 548 *cp = '\0'; 549 uuser = host; 550 host = cp + 1; 551 } 552 (void)strlcpy(cmdbuf, getprogname(), sizeof(cmdbuf)); 553 xargv[0] = cmdbuf; 554 xargv[1] = host; 555 xargv[2] = argv[1]; 556 xargv[3] = NULL; 557 do { 558 int oautologin; 559 560 oautologin = autologin; 561 if (uuser != NULL) { 562 anonftp = 0; 563 autologin = 0; 564 } 565 setpeer(argc+1, xargv); 566 autologin = oautologin; 567 if (connected == 1 && uuser != NULL) 568 (void)ftp_login(host, uuser, NULL); 569 if (!retry_connect) 570 break; 571 if (!connected) { 572 macnum = 0; 573 fprintf(ttyout, 574 "Retrying in %d seconds...\n", 575 retry_connect); 576 sleep(retry_connect); 577 } 578 } while (!connected); 579 retry_connect = 0; /* connected, stop hiding msgs */ 580 } 581 } 582 if (isupload) { 583 return usage(); 584 } 585 586 #ifndef NO_EDITCOMPLETE 587 controlediting(); 588 #endif /* !NO_EDITCOMPLETE */ 589 590 (void)sigsetjmp(toplevel, 1); 591 (void)xsignal(SIGINT, intr); 592 (void)xsignal(SIGPIPE, lostpeer); 593 for (;;) 594 cmdscanner(); 595 } 596 597 /* 598 * Generate a prompt 599 */ 600 char * 601 prompt(void) 602 { 603 static char **promptopt; 604 static char buf[MAXPATHLEN]; 605 606 if (promptopt == NULL) { 607 struct option *o; 608 609 o = getoption("prompt"); 610 if (o == NULL) 611 errx(1, "prompt: no such option `prompt'"); 612 promptopt = &(o->value); 613 } 614 formatbuf(buf, sizeof(buf), *promptopt ? *promptopt : DEFAULTPROMPT); 615 return (buf); 616 } 617 618 /* 619 * Generate an rprompt 620 */ 621 char * 622 rprompt(void) 623 { 624 static char **rpromptopt; 625 static char buf[MAXPATHLEN]; 626 627 if (rpromptopt == NULL) { 628 struct option *o; 629 630 o = getoption("rprompt"); 631 if (o == NULL) 632 errx(1, "rprompt: no such option `rprompt'"); 633 rpromptopt = &(o->value); 634 } 635 formatbuf(buf, sizeof(buf), *rpromptopt ? *rpromptopt : DEFAULTRPROMPT); 636 return (buf); 637 } 638 639 /* 640 * Command parser. 641 */ 642 void 643 cmdscanner(void) 644 { 645 struct cmd *c; 646 char *p; 647 #ifndef NO_EDITCOMPLETE 648 int ch; 649 size_t num; 650 #endif 651 int len; 652 char cmdbuf[MAX_C_NAME]; 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 len = get_line(stdin, line, sizeof(line), NULL); 666 switch (len) { 667 case -1: /* EOF */ 668 case -2: /* error */ 669 if (fromatty) 670 putc('\n', ttyout); 671 justquit(); 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 justquit(); 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, (void *)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 (void)strlcpy(cmdbuf, c->c_name, sizeof(cmdbuf)); 740 margv[0] = cmdbuf; 741 (*c->c_handler)(margc, margv); 742 if (bell && c->c_bell) 743 (void)putc('\007', ttyout); 744 if (c->c_handler != help) 745 break; 746 } 747 (void)xsignal(SIGINT, intr); 748 (void)xsignal(SIGPIPE, lostpeer); 749 } 750 751 struct cmd * 752 getcmd(const char *name) 753 { 754 const char *p, *q; 755 struct cmd *c, *found; 756 int nmatches, longest; 757 758 if (name == NULL) 759 return (0); 760 761 longest = 0; 762 nmatches = 0; 763 found = 0; 764 for (c = cmdtab; (p = c->c_name) != NULL; c++) { 765 for (q = name; *q == *p++; q++) 766 if (*q == 0) /* exact match? */ 767 return (c); 768 if (!*q) { /* the name was a prefix */ 769 if (q - name > longest) { 770 longest = q - name; 771 nmatches = 1; 772 found = c; 773 } else if (q - name == longest) 774 nmatches++; 775 } 776 } 777 if (nmatches > 1) 778 return ((struct cmd *)-1); 779 return (found); 780 } 781 782 /* 783 * Slice a string up into argc/argv. 784 */ 785 786 int slrflag; 787 788 void 789 makeargv(void) 790 { 791 char *argp; 792 793 stringbase = line; /* scan from first of buffer */ 794 argbase = argbuf; /* store from first of buffer */ 795 slrflag = 0; 796 marg_sl->sl_cur = 0; /* reset to start of marg_sl */ 797 for (margc = 0; ; margc++) { 798 argp = slurpstring(); 799 ftp_sl_add(marg_sl, argp); 800 if (argp == NULL) 801 break; 802 } 803 #ifndef NO_EDITCOMPLETE 804 if (cursor_pos == line) { 805 cursor_argc = 0; 806 cursor_argo = 0; 807 } else if (cursor_pos != NULL) { 808 cursor_argc = margc; 809 cursor_argo = strlen(margv[margc-1]); 810 } 811 #endif /* !NO_EDITCOMPLETE */ 812 } 813 814 #ifdef NO_EDITCOMPLETE 815 #define INC_CHKCURSOR(x) (x)++ 816 #else /* !NO_EDITCOMPLETE */ 817 #define INC_CHKCURSOR(x) { (x)++ ; \ 818 if (x == cursor_pos) { \ 819 cursor_argc = margc; \ 820 cursor_argo = ap-argbase; \ 821 cursor_pos = NULL; \ 822 } } 823 824 #endif /* !NO_EDITCOMPLETE */ 825 826 /* 827 * Parse string into argbuf; 828 * implemented with FSM to 829 * handle quoting and strings 830 */ 831 char * 832 slurpstring(void) 833 { 834 static char bangstr[2] = { '!', '\0' }; 835 static char dollarstr[2] = { '$', '\0' }; 836 int got_one = 0; 837 char *sb = stringbase; 838 char *ap = argbase; 839 char *tmp = argbase; /* will return this if token found */ 840 841 if (*sb == '!' || *sb == '$') { /* recognize ! as a token for shell */ 842 switch (slrflag) { /* and $ as token for macro invoke */ 843 case 0: 844 slrflag++; 845 INC_CHKCURSOR(stringbase); 846 return ((*sb == '!') ? bangstr : dollarstr); 847 case 1: 848 slrflag++; 849 altarg = stringbase; 850 break; 851 default: 852 break; 853 } 854 } 855 856 S0: 857 switch (*sb) { 858 859 case '\0': 860 goto OUT; 861 862 case ' ': 863 case '\t': 864 INC_CHKCURSOR(sb); 865 goto S0; 866 867 default: 868 switch (slrflag) { 869 case 0: 870 slrflag++; 871 break; 872 case 1: 873 slrflag++; 874 altarg = sb; 875 break; 876 default: 877 break; 878 } 879 goto S1; 880 } 881 882 S1: 883 switch (*sb) { 884 885 case ' ': 886 case '\t': 887 case '\0': 888 goto OUT; /* end of token */ 889 890 case '\\': 891 INC_CHKCURSOR(sb); 892 goto S2; /* slurp next character */ 893 894 case '"': 895 INC_CHKCURSOR(sb); 896 goto S3; /* slurp quoted string */ 897 898 default: 899 *ap = *sb; /* add character to token */ 900 ap++; 901 INC_CHKCURSOR(sb); 902 got_one = 1; 903 goto S1; 904 } 905 906 S2: 907 switch (*sb) { 908 909 case '\0': 910 goto OUT; 911 912 default: 913 *ap = *sb; 914 ap++; 915 INC_CHKCURSOR(sb); 916 got_one = 1; 917 goto S1; 918 } 919 920 S3: 921 switch (*sb) { 922 923 case '\0': 924 goto OUT; 925 926 case '"': 927 INC_CHKCURSOR(sb); 928 goto S1; 929 930 default: 931 *ap = *sb; 932 ap++; 933 INC_CHKCURSOR(sb); 934 got_one = 1; 935 goto S3; 936 } 937 938 OUT: 939 if (got_one) 940 *ap++ = '\0'; 941 argbase = ap; /* update storage pointer */ 942 stringbase = sb; /* update scan pointer */ 943 if (got_one) { 944 return (tmp); 945 } 946 switch (slrflag) { 947 case 0: 948 slrflag++; 949 break; 950 case 1: 951 slrflag++; 952 altarg = NULL; 953 break; 954 default: 955 break; 956 } 957 return (NULL); 958 } 959 960 /* 961 * Help/usage command. 962 * Call each command handler with argc == 0 and argv[0] == name. 963 */ 964 void 965 help(int argc, char *argv[]) 966 { 967 struct cmd *c; 968 char *nargv[1], *cmd; 969 const char *p; 970 int isusage; 971 972 cmd = argv[0]; 973 isusage = (strcmp(cmd, "usage") == 0); 974 if (argc == 0 || (isusage && argc == 1)) { 975 UPRINTF("usage: %s [command ...]\n", cmd); 976 return; 977 } 978 if (argc == 1) { 979 StringList *buf; 980 981 buf = ftp_sl_init(); 982 fprintf(ttyout, 983 "%sommands may be abbreviated. Commands are:\n\n", 984 proxy ? "Proxy c" : "C"); 985 for (c = cmdtab; (p = c->c_name) != NULL; c++) 986 if (!proxy || c->c_proxy) 987 ftp_sl_add(buf, ftp_strdup(p)); 988 list_vertical(buf); 989 sl_free(buf, 1); 990 return; 991 } 992 993 #define HELPINDENT ((int) sizeof("disconnect")) 994 995 while (--argc > 0) { 996 char *arg; 997 char cmdbuf[MAX_C_NAME]; 998 999 arg = *++argv; 1000 c = getcmd(arg); 1001 if (c == (struct cmd *)-1) 1002 fprintf(ttyout, "?Ambiguous %s command `%s'\n", 1003 cmd, arg); 1004 else if (c == NULL) 1005 fprintf(ttyout, "?Invalid %s command `%s'\n", 1006 cmd, arg); 1007 else { 1008 if (isusage) { 1009 (void)strlcpy(cmdbuf, c->c_name, sizeof(cmdbuf)); 1010 nargv[0] = cmdbuf; 1011 (*c->c_handler)(0, nargv); 1012 } else 1013 fprintf(ttyout, "%-*s\t%s\n", HELPINDENT, 1014 c->c_name, c->c_help); 1015 } 1016 } 1017 } 1018 1019 struct option * 1020 getoption(const char *name) 1021 { 1022 const char *p; 1023 struct option *c; 1024 1025 if (name == NULL) 1026 return (NULL); 1027 for (c = optiontab; (p = c->name) != NULL; c++) { 1028 if (strcasecmp(p, name) == 0) 1029 return (c); 1030 } 1031 return (NULL); 1032 } 1033 1034 char * 1035 getoptionvalue(const char *name) 1036 { 1037 struct option *c; 1038 1039 if (name == NULL) 1040 errx(1, "getoptionvalue: invoked with NULL name"); 1041 c = getoption(name); 1042 if (c != NULL) 1043 return (c->value); 1044 errx(1, "getoptionvalue: invoked with unknown option `%s'", name); 1045 /* NOTREACHED */ 1046 } 1047 1048 static void 1049 setupoption(const char *name, const char *value, const char *defaultvalue) 1050 { 1051 set_option(name, value ? value : defaultvalue, 0); 1052 } 1053 1054 static void 1055 synopsis(FILE * stream) 1056 { 1057 const char * progname = getprogname(); 1058 1059 fprintf(stream, 1060 "usage: %s [-46AadefginpRtVv] [-N NETRC] [-o OUTPUT] [-P PORT] [-q QUITTIME]\n" 1061 " [-r RETRY] [-s SRCADDR] [-T DIR,MAX[,INC]] [-x XFERSIZE]\n" 1062 " [[USER@]HOST [PORT]]\n" 1063 " [[USER@]HOST:[PATH][/]]\n" 1064 " [file:///PATH]\n" 1065 " [ftp://[USER[:PASSWORD]@]HOST[:PORT]/PATH[/][;type=TYPE]]\n" 1066 " [http://[USER[:PASSWORD]@]HOST[:PORT]/PATH]\n" 1067 #ifdef WITH_SSL 1068 " [https://[USER[:PASSWORD]@]HOST[:PORT]/PATH]\n" 1069 #endif 1070 " ...\n" 1071 " %s -u URL FILE ...\n" 1072 " %s -?\n", 1073 progname, progname, progname); 1074 } 1075 1076 static int 1077 usage_help(void) 1078 { 1079 synopsis(stdout); 1080 #ifndef NO_USAGE 1081 printf( 1082 " -4 Only use IPv4 addresses\n" 1083 " -6 Only use IPv6 addresses\n" 1084 " -A Force active mode\n" 1085 " -a Use anonymous login\n" 1086 " -d Enable debugging\n" 1087 " -e Disable command-line editing\n" 1088 " -f Force cache reload for FTP or HTTP proxy transfers\n" 1089 " -g Disable file name globbing\n" 1090 " -i Disable interactive prompt during multiple file transfers\n" 1091 " -N NETRC Use NETRC instead of ~/.netrc\n" 1092 " -n Disable auto-login\n" 1093 " -o OUTPUT Save auto-fetched files to OUTPUT\n" 1094 " -P PORT Use port PORT\n" 1095 " -p Force passive mode\n" 1096 " -q QUITTIME Quit if connection stalls for QUITTIME seconds\n" 1097 " -R Restart non-proxy auto-fetch\n" 1098 " -r RETRY Retry failed connection attempts after RETRY seconds\n" 1099 " -s SRCADDR Use source address SRCADDR\n" 1100 " -t Enable packet tracing\n" 1101 " -T DIR,MAX[,INC]\n" 1102 " Set maximum transfer rate for direction DIR to MAX bytes/s,\n" 1103 " with optional increment INC bytes/s\n" 1104 " -u URL URL to upload file arguments to\n" 1105 " -V Disable verbose and progress\n" 1106 " -v Enable verbose and progress\n" 1107 " -x XFERSIZE Set socket send and receive size to XFERSIZE\n" 1108 " -? Display this help and exit\n" 1109 ); 1110 #endif 1111 return EXIT_SUCCESS; 1112 } 1113 1114 static int 1115 usage(void) 1116 { 1117 synopsis(stderr); 1118 return EXIT_FAILURE; 1119 } 1120