1 /* $NetBSD: main.c,v 1.129 2023/02/25 12:07:25 mlelstv Exp $ */ 2 3 /*- 4 * Copyright (c) 1996-2023 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 1.129 2023/02/25 12:07:25 mlelstv 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 warnx("-%c: unknown option", optopt); 424 return usage(); 425 426 case ':': 427 warnx("-%c: missing argument", optopt); 428 return usage(); 429 430 default: 431 errx(1, "unimplemented option -%c", ch); 432 } 433 } 434 /* set line buffering on ttyout */ 435 setvbuf(ttyout, NULL, _IOLBF, 0); 436 argc -= optind; 437 argv += optind; 438 439 cpend = 0; /* no pending replies */ 440 proxy = 0; /* proxy not active */ 441 crflag = 1; /* strip c.r. on ascii gets */ 442 sendport = -1; /* not using ports */ 443 444 if (src_addr != NULL) { 445 struct addrinfo hints; 446 int error; 447 448 memset(&hints, 0, sizeof(hints)); 449 hints.ai_family = family; 450 hints.ai_socktype = SOCK_STREAM; 451 hints.ai_flags = AI_PASSIVE; 452 error = getaddrinfo(src_addr, NULL, &hints, &bindai); 453 if (error) { 454 errx(1, "Can't lookup `%s': %s", src_addr, 455 (error == EAI_SYSTEM) ? strerror(errno) 456 : gai_strerror(error)); 457 } 458 } 459 460 /* 461 * Cache the user name and home directory. 462 */ 463 localhome = NULL; 464 localname = NULL; 465 anonuser = "anonymous"; 466 cp = getenv("HOME"); 467 if (! EMPTYSTRING(cp)) 468 localhome = ftp_strdup(cp); 469 pw = NULL; 470 cp = getlogin(); 471 if (cp != NULL) 472 pw = getpwnam(cp); 473 if (pw == NULL) 474 pw = getpwuid(getuid()); 475 if (pw != NULL) { 476 if (localhome == NULL && !EMPTYSTRING(pw->pw_dir)) 477 localhome = ftp_strdup(pw->pw_dir); 478 localname = ftp_strdup(pw->pw_name); 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@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("https_proxy", getenv(HTTPS_PROXY), ""); 511 setupoption("no_proxy", getenv(NO_PROXY), ""); 512 setupoption("pager", getenv("PAGER"), DEFAULTPAGER); 513 setupoption("prompt", getenv("FTPPROMPT"), DEFAULTPROMPT); 514 setupoption("rprompt", getenv("FTPRPROMPT"), DEFAULTRPROMPT); 515 setupoption("sslnoverify", getenv("FTPSSLNOVERIFY"), ""); 516 517 free(anonpass); 518 519 setttywidth(0); 520 #ifdef SIGINFO 521 (void)xsignal(SIGINFO, psummary); 522 #endif 523 (void)xsignal(SIGQUIT, psummary); 524 (void)xsignal(SIGUSR1, crankrate); 525 (void)xsignal(SIGUSR2, crankrate); 526 (void)xsignal(SIGWINCH, setttywidth); 527 528 if (argc > 0) { 529 if (isupload) { 530 rval = auto_put(argc, argv, upload_path); 531 sigint_or_rval_exit: 532 if (sigint_raised) { 533 (void)xsignal(SIGINT, SIG_DFL); 534 raise(SIGINT); 535 } 536 exit(rval); 537 } else if (strchr(argv[0], ':') != NULL 538 && ! isipv6addr(argv[0])) { 539 rval = auto_fetch(argc, argv); 540 if (rval >= 0) /* -1 == connected and cd-ed */ 541 goto sigint_or_rval_exit; 542 } else { 543 char *xargv[4], *uuser, *host; 544 char cmdbuf[MAXPATHLEN]; 545 546 if ((rval = sigsetjmp(toplevel, 1))) 547 goto sigint_or_rval_exit; 548 (void)xsignal(SIGINT, intr); 549 (void)xsignal(SIGPIPE, lostpeer); 550 uuser = NULL; 551 host = argv[0]; 552 cp = strchr(host, '@'); 553 if (cp) { 554 *cp = '\0'; 555 uuser = host; 556 host = cp + 1; 557 } 558 (void)strlcpy(cmdbuf, getprogname(), sizeof(cmdbuf)); 559 xargv[0] = cmdbuf; 560 xargv[1] = host; 561 xargv[2] = argv[1]; 562 xargv[3] = NULL; 563 do { 564 int oautologin; 565 566 oautologin = autologin; 567 if (uuser != NULL) { 568 anonftp = 0; 569 autologin = 0; 570 } 571 setpeer(argc+1, xargv); 572 autologin = oautologin; 573 if (connected == 1 && uuser != NULL) 574 (void)ftp_login(host, uuser, NULL); 575 if (!retry_connect) 576 break; 577 if (!connected) { 578 macnum = 0; 579 fprintf(ttyout, 580 "Retrying in %d seconds...\n", 581 retry_connect); 582 sleep(retry_connect); 583 } 584 } while (!connected); 585 retry_connect = 0; /* connected, stop hiding msgs */ 586 } 587 } 588 if (isupload) { 589 return usage(); 590 } 591 592 #ifndef NO_EDITCOMPLETE 593 controlediting(); 594 #endif /* !NO_EDITCOMPLETE */ 595 596 (void)sigsetjmp(toplevel, 1); 597 (void)xsignal(SIGINT, intr); 598 (void)xsignal(SIGPIPE, lostpeer); 599 for (;;) 600 cmdscanner(); 601 } 602 603 /* 604 * Generate a prompt 605 */ 606 char * 607 prompt(void) 608 { 609 static char **promptopt; 610 static char buf[MAXPATHLEN]; 611 612 if (promptopt == NULL) { 613 struct option *o; 614 615 o = getoption("prompt"); 616 if (o == NULL) 617 errx(1, "prompt: no such option `prompt'"); 618 promptopt = &(o->value); 619 } 620 formatbuf(buf, sizeof(buf), *promptopt ? *promptopt : DEFAULTPROMPT); 621 return (buf); 622 } 623 624 /* 625 * Generate an rprompt 626 */ 627 char * 628 rprompt(void) 629 { 630 static char **rpromptopt; 631 static char buf[MAXPATHLEN]; 632 633 if (rpromptopt == NULL) { 634 struct option *o; 635 636 o = getoption("rprompt"); 637 if (o == NULL) 638 errx(1, "rprompt: no such option `rprompt'"); 639 rpromptopt = &(o->value); 640 } 641 formatbuf(buf, sizeof(buf), *rpromptopt ? *rpromptopt : DEFAULTRPROMPT); 642 return (buf); 643 } 644 645 /* 646 * Command parser. 647 */ 648 void 649 cmdscanner(void) 650 { 651 struct cmd *c; 652 char *p; 653 #ifndef NO_EDITCOMPLETE 654 int ch; 655 size_t num; 656 #endif 657 int len; 658 char cmdbuf[MAX_C_NAME]; 659 660 for (;;) { 661 #ifndef NO_EDITCOMPLETE 662 if (!editing) { 663 #endif /* !NO_EDITCOMPLETE */ 664 if (fromatty) { 665 fputs(prompt(), ttyout); 666 p = rprompt(); 667 if (*p) 668 fprintf(ttyout, "%s ", p); 669 } 670 (void)fflush(ttyout); 671 len = get_line(stdin, line, sizeof(line), NULL); 672 switch (len) { 673 case -1: /* EOF */ 674 case -2: /* error */ 675 if (fromatty) 676 putc('\n', ttyout); 677 justquit(); 678 /* NOTREACHED */ 679 case -3: /* too long; try again */ 680 fputs("Sorry, input line is too long.\n", 681 ttyout); 682 continue; 683 case 0: /* empty; try again */ 684 continue; 685 default: /* all ok */ 686 break; 687 } 688 #ifndef NO_EDITCOMPLETE 689 } else { 690 const char *buf; 691 HistEvent ev; 692 cursor_pos = NULL; 693 694 buf = el_gets(el, &ch); 695 num = ch; 696 if (buf == NULL || num == 0) { 697 if (fromatty) 698 putc('\n', ttyout); 699 justquit(); 700 } 701 if (num >= sizeof(line)) { 702 fputs("Sorry, input line is too long.\n", 703 ttyout); 704 break; 705 } 706 memcpy(line, buf, num); 707 if (line[--num] == '\n') { 708 line[num] = '\0'; 709 if (num == 0) 710 break; 711 } 712 history(hist, &ev, H_ENTER, buf); 713 } 714 #endif /* !NO_EDITCOMPLETE */ 715 716 makeargv(); 717 if (margc == 0) 718 continue; 719 c = getcmd(margv[0]); 720 if (c == (struct cmd *)-1) { 721 fputs("?Ambiguous command.\n", ttyout); 722 continue; 723 } 724 if (c == NULL) { 725 #if !defined(NO_EDITCOMPLETE) 726 /* 727 * attempt to el_parse() unknown commands. 728 * any command containing a ':' would be parsed 729 * as "[prog:]cmd ...", and will result in a 730 * false positive if prog != "ftp", so treat 731 * such commands as invalid. 732 */ 733 if (strchr(margv[0], ':') != NULL || 734 !editing || 735 el_parse(el, margc, (void *)margv) != 0) 736 #endif /* !NO_EDITCOMPLETE */ 737 fputs("?Invalid command.\n", ttyout); 738 continue; 739 } 740 if (c->c_conn && !connected) { 741 fputs("Not connected.\n", ttyout); 742 continue; 743 } 744 confirmrest = 0; 745 (void)strlcpy(cmdbuf, c->c_name, sizeof(cmdbuf)); 746 margv[0] = cmdbuf; 747 (*c->c_handler)(margc, margv); 748 if (bell && c->c_bell) 749 (void)putc('\007', ttyout); 750 if (c->c_handler != help) 751 break; 752 } 753 (void)xsignal(SIGINT, intr); 754 (void)xsignal(SIGPIPE, lostpeer); 755 } 756 757 struct cmd * 758 getcmd(const char *name) 759 { 760 const char *p, *q; 761 struct cmd *c, *found; 762 int nmatches, longest; 763 764 if (name == NULL) 765 return (0); 766 767 longest = 0; 768 nmatches = 0; 769 found = 0; 770 for (c = cmdtab; (p = c->c_name) != NULL; c++) { 771 for (q = name; *q == *p++; q++) 772 if (*q == 0) /* exact match? */ 773 return (c); 774 if (!*q) { /* the name was a prefix */ 775 if (q - name > longest) { 776 longest = q - name; 777 nmatches = 1; 778 found = c; 779 } else if (q - name == longest) 780 nmatches++; 781 } 782 } 783 if (nmatches > 1) 784 return ((struct cmd *)-1); 785 return (found); 786 } 787 788 /* 789 * Slice a string up into argc/argv. 790 */ 791 792 int slrflag; 793 794 void 795 makeargv(void) 796 { 797 char *argp; 798 799 stringbase = line; /* scan from first of buffer */ 800 argbase = argbuf; /* store from first of buffer */ 801 slrflag = 0; 802 marg_sl->sl_cur = 0; /* reset to start of marg_sl */ 803 for (margc = 0; ; margc++) { 804 argp = slurpstring(); 805 ftp_sl_add(marg_sl, argp); 806 if (argp == NULL) 807 break; 808 } 809 #ifndef NO_EDITCOMPLETE 810 if (cursor_pos == line) { 811 cursor_argc = 0; 812 cursor_argo = 0; 813 } else if (cursor_pos != NULL) { 814 cursor_argc = margc; 815 cursor_argo = strlen(margv[margc-1]); 816 } 817 #endif /* !NO_EDITCOMPLETE */ 818 } 819 820 #ifdef NO_EDITCOMPLETE 821 #define INC_CHKCURSOR(x) (x)++ 822 #else /* !NO_EDITCOMPLETE */ 823 #define INC_CHKCURSOR(x) { (x)++ ; \ 824 if (x == cursor_pos) { \ 825 cursor_argc = margc; \ 826 cursor_argo = ap-argbase; \ 827 cursor_pos = NULL; \ 828 } } 829 830 #endif /* !NO_EDITCOMPLETE */ 831 832 /* 833 * Parse string into argbuf; 834 * implemented with FSM to 835 * handle quoting and strings 836 */ 837 char * 838 slurpstring(void) 839 { 840 static char bangstr[2] = { '!', '\0' }; 841 static char dollarstr[2] = { '$', '\0' }; 842 int got_one = 0; 843 char *sb = stringbase; 844 char *ap = argbase; 845 char *tmp = argbase; /* will return this if token found */ 846 847 if (*sb == '!' || *sb == '$') { /* recognize ! as a token for shell */ 848 switch (slrflag) { /* and $ as token for macro invoke */ 849 case 0: 850 slrflag++; 851 INC_CHKCURSOR(stringbase); 852 return ((*sb == '!') ? bangstr : dollarstr); 853 case 1: 854 slrflag++; 855 altarg = stringbase; 856 break; 857 default: 858 break; 859 } 860 } 861 862 S0: 863 switch (*sb) { 864 865 case '\0': 866 goto OUT; 867 868 case ' ': 869 case '\t': 870 INC_CHKCURSOR(sb); 871 goto S0; 872 873 default: 874 switch (slrflag) { 875 case 0: 876 slrflag++; 877 break; 878 case 1: 879 slrflag++; 880 altarg = sb; 881 break; 882 default: 883 break; 884 } 885 goto S1; 886 } 887 888 S1: 889 switch (*sb) { 890 891 case ' ': 892 case '\t': 893 case '\0': 894 goto OUT; /* end of token */ 895 896 case '\\': 897 INC_CHKCURSOR(sb); 898 goto S2; /* slurp next character */ 899 900 case '"': 901 INC_CHKCURSOR(sb); 902 goto S3; /* slurp quoted string */ 903 904 default: 905 *ap = *sb; /* add character to token */ 906 ap++; 907 INC_CHKCURSOR(sb); 908 got_one = 1; 909 goto S1; 910 } 911 912 S2: 913 switch (*sb) { 914 915 case '\0': 916 goto OUT; 917 918 default: 919 *ap = *sb; 920 ap++; 921 INC_CHKCURSOR(sb); 922 got_one = 1; 923 goto S1; 924 } 925 926 S3: 927 switch (*sb) { 928 929 case '\0': 930 goto OUT; 931 932 case '"': 933 INC_CHKCURSOR(sb); 934 goto S1; 935 936 default: 937 *ap = *sb; 938 ap++; 939 INC_CHKCURSOR(sb); 940 got_one = 1; 941 goto S3; 942 } 943 944 OUT: 945 if (got_one) 946 *ap++ = '\0'; 947 argbase = ap; /* update storage pointer */ 948 stringbase = sb; /* update scan pointer */ 949 if (got_one) { 950 return (tmp); 951 } 952 switch (slrflag) { 953 case 0: 954 slrflag++; 955 break; 956 case 1: 957 slrflag++; 958 altarg = NULL; 959 break; 960 default: 961 break; 962 } 963 return (NULL); 964 } 965 966 /* 967 * Help/usage command. 968 * Call each command handler with argc == 0 and argv[0] == name. 969 */ 970 void 971 help(int argc, char *argv[]) 972 { 973 struct cmd *c; 974 char *nargv[1], *cmd; 975 const char *p; 976 int isusage; 977 978 cmd = argv[0]; 979 isusage = (strcmp(cmd, "usage") == 0); 980 if (argc == 0 || (isusage && argc == 1)) { 981 UPRINTF("usage: %s [command ...]\n", cmd); 982 return; 983 } 984 if (argc == 1) { 985 StringList *buf; 986 987 buf = ftp_sl_init(); 988 fprintf(ttyout, 989 "%sommands may be abbreviated. Commands are:\n\n", 990 proxy ? "Proxy c" : "C"); 991 for (c = cmdtab; (p = c->c_name) != NULL; c++) 992 if (!proxy || c->c_proxy) 993 ftp_sl_add(buf, ftp_strdup(p)); 994 list_vertical(buf); 995 sl_free(buf, 1); 996 return; 997 } 998 999 #define HELPINDENT ((int) sizeof("disconnect")) 1000 1001 while (--argc > 0) { 1002 char *arg; 1003 char cmdbuf[MAX_C_NAME]; 1004 1005 arg = *++argv; 1006 c = getcmd(arg); 1007 if (c == (struct cmd *)-1) 1008 fprintf(ttyout, "?Ambiguous %s command `%s'\n", 1009 cmd, arg); 1010 else if (c == NULL) 1011 fprintf(ttyout, "?Invalid %s command `%s'\n", 1012 cmd, arg); 1013 else { 1014 if (isusage) { 1015 (void)strlcpy(cmdbuf, c->c_name, sizeof(cmdbuf)); 1016 nargv[0] = cmdbuf; 1017 (*c->c_handler)(0, nargv); 1018 } else 1019 fprintf(ttyout, "%-*s\t%s\n", HELPINDENT, 1020 c->c_name, c->c_help); 1021 } 1022 } 1023 } 1024 1025 struct option * 1026 getoption(const char *name) 1027 { 1028 const char *p; 1029 struct option *c; 1030 1031 if (name == NULL) 1032 return (NULL); 1033 for (c = optiontab; (p = c->name) != NULL; c++) { 1034 if (strcasecmp(p, name) == 0) 1035 return (c); 1036 } 1037 return (NULL); 1038 } 1039 1040 char * 1041 getoptionvalue(const char *name) 1042 { 1043 struct option *c; 1044 1045 if (name == NULL) 1046 errx(1, "getoptionvalue: invoked with NULL name"); 1047 c = getoption(name); 1048 if (c != NULL) 1049 return (c->value); 1050 errx(1, "getoptionvalue: invoked with unknown option `%s'", name); 1051 /* NOTREACHED */ 1052 } 1053 1054 static void 1055 setupoption(const char *name, const char *value, const char *defaultvalue) 1056 { 1057 set_option(name, value ? value : defaultvalue, 0); 1058 } 1059 1060 static void 1061 synopsis(FILE * stream) 1062 { 1063 const char * progname = getprogname(); 1064 1065 fprintf(stream, 1066 "usage: %s [-46AadefginpRtVv] [-N NETRC] [-o OUTPUT] [-P PORT] [-q QUITTIME]\n" 1067 " [-r RETRY] [-s SRCADDR] [-T DIR,MAX[,INC]] [-x XFERSIZE]\n" 1068 " [[USER@]HOST [PORT]]\n" 1069 " [[USER@]HOST:[PATH][/]]\n" 1070 " [file:///PATH]\n" 1071 " [ftp://[USER[:PASSWORD]@]HOST[:PORT]/PATH[/][;type=TYPE]]\n" 1072 " [http://[USER[:PASSWORD]@]HOST[:PORT]/PATH]\n" 1073 #ifdef WITH_SSL 1074 " [https://[USER[:PASSWORD]@]HOST[:PORT]/PATH]\n" 1075 #endif 1076 " ...\n" 1077 " %s -u URL FILE ...\n" 1078 " %s -?\n", 1079 progname, progname, progname); 1080 } 1081 1082 static int 1083 usage_help(void) 1084 { 1085 synopsis(stdout); 1086 #ifndef NO_USAGE 1087 printf( 1088 " -4 Only use IPv4 addresses\n" 1089 " -6 Only use IPv6 addresses\n" 1090 " -A Force active mode\n" 1091 " -a Use anonymous login\n" 1092 " -d Enable debugging\n" 1093 " -e Disable command-line editing\n" 1094 " -f Force cache reload for FTP or HTTP proxy transfers\n" 1095 " -g Disable file name globbing\n" 1096 " -i Disable interactive prompt during multiple file transfers\n" 1097 " -N NETRC Use NETRC instead of ~/.netrc\n" 1098 " -n Disable auto-login\n" 1099 " -o OUTPUT Save auto-fetched files to OUTPUT\n" 1100 " -P PORT Use port PORT\n" 1101 " -p Force passive mode\n" 1102 " -q QUITTIME Quit if connection stalls for QUITTIME seconds\n" 1103 " -R Restart non-proxy auto-fetch\n" 1104 " -r RETRY Retry failed connection attempts after RETRY seconds\n" 1105 " -s SRCADDR Use source address SRCADDR\n" 1106 " -t Enable packet tracing\n" 1107 " -T DIR,MAX[,INC]\n" 1108 " Set maximum transfer rate for direction DIR to MAX bytes/s,\n" 1109 " with optional increment INC bytes/s\n" 1110 " -u URL URL to upload file arguments to\n" 1111 " -V Disable verbose and progress\n" 1112 " -v Enable verbose and progress\n" 1113 " -x XFERSIZE Set socket send and receive size to XFERSIZE\n" 1114 " -? Display this help and exit\n" 1115 ); 1116 #endif 1117 return EXIT_SUCCESS; 1118 } 1119 1120 static int 1121 usage(void) 1122 { 1123 synopsis(stderr); 1124 return EXIT_FAILURE; 1125 } 1126