main.c revision 1.132
1 /* $NetBSD: main.c,v 1.132 2024/09/25 16:55:39 christos 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 1.132 2024/09/25 16:55:39 christos 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 struct http_headers custom_headers; 138 139 int 140 main(int volatile argc, char **volatile argv) 141 { 142 int ch, rval; 143 struct passwd *pw; 144 struct entry *p; 145 char *cp, *ep, *anonpass, *upload_path, *src_addr; 146 const char *anonuser; 147 int dumbterm, isupload; 148 size_t len; 149 150 tzset(); 151 setlocale(LC_ALL, ""); 152 setprogname(argv[0]); 153 154 sigint_raised = 0; 155 156 ftpport = "ftp"; 157 httpport = "http"; 158 #ifdef WITH_SSL 159 httpsport = "https"; 160 #endif 161 gateport = NULL; 162 cp = getenv("FTPSERVERPORT"); 163 if (cp != NULL) 164 gateport = cp; 165 else 166 gateport = "ftpgate"; 167 doglob = 1; 168 interactive = 1; 169 autologin = 1; 170 passivemode = 1; 171 activefallback = 1; 172 preserve = 1; 173 verbose = 0; 174 progress = 0; 175 gatemode = 0; 176 data = -1; 177 outfile = NULL; 178 restartautofetch = 0; 179 #ifndef NO_EDITCOMPLETE 180 editing = 0; 181 el = NULL; 182 hist = NULL; 183 #endif 184 bytes = 0; 185 mark = HASHBYTES; 186 rate_get = 0; 187 rate_get_incr = DEFAULTINCR; 188 rate_put = 0; 189 rate_put_incr = DEFAULTINCR; 190 #ifdef INET6 191 epsv4 = 1; 192 epsv6 = 1; 193 #else 194 epsv4 = 0; 195 epsv6 = 0; 196 #endif 197 epsv4bad = 0; 198 epsv6bad = 0; 199 src_addr = NULL; 200 upload_path = NULL; 201 isupload = 0; 202 reply_callback = NULL; 203 #ifdef INET6 204 family = AF_UNSPEC; 205 #else 206 family = AF_INET; /* force AF_INET if no INET6 support */ 207 #endif 208 209 netrc[0] = '\0'; 210 cp = getenv("NETRC"); 211 if (cp != NULL && strlcpy(netrc, cp, sizeof(netrc)) >= sizeof(netrc)) 212 errx(1, "$NETRC `%s': %s", cp, strerror(ENAMETOOLONG)); 213 214 marg_sl = ftp_sl_init(); 215 if ((tmpdir = getenv("TMPDIR")) == NULL) 216 tmpdir = _PATH_TMP; 217 218 /* Set default operation mode based on FTPMODE environment variable */ 219 if ((cp = getenv("FTPMODE")) != NULL) { 220 if (strcasecmp(cp, "passive") == 0) { 221 passivemode = 1; 222 activefallback = 0; 223 } else if (strcasecmp(cp, "active") == 0) { 224 passivemode = 0; 225 activefallback = 0; 226 } else if (strcasecmp(cp, "gate") == 0) { 227 gatemode = 1; 228 } else if (strcasecmp(cp, "auto") == 0) { 229 passivemode = 1; 230 activefallback = 1; 231 } else 232 warnx("Unknown $FTPMODE `%s'; using defaults", cp); 233 } 234 235 if (strcmp(getprogname(), "pftp") == 0) { 236 passivemode = 1; 237 activefallback = 0; 238 } else if (strcmp(getprogname(), "gate-ftp") == 0) 239 gatemode = 1; 240 241 gateserver = getenv("FTPSERVER"); 242 if (gateserver == NULL || *gateserver == '\0') 243 gateserver = GATE_SERVER; 244 if (gatemode) { 245 if (*gateserver == '\0') { 246 warnx( 247 "Neither $FTPSERVER nor GATE_SERVER is defined; disabling gate-ftp"); 248 gatemode = 0; 249 } 250 } 251 252 cp = getenv("TERM"); 253 if (cp == NULL || strcmp(cp, "dumb") == 0) 254 dumbterm = 1; 255 else 256 dumbterm = 0; 257 fromatty = isatty(fileno(stdin)); 258 ttyout = stdout; 259 if (isatty(fileno(ttyout))) { 260 verbose = 1; /* verbose if to a tty */ 261 if (! dumbterm) { 262 #ifndef NO_EDITCOMPLETE 263 if (fromatty) /* editing mode on if tty is usable */ 264 editing = 1; 265 #endif 266 #ifndef NO_PROGRESS 267 if (foregroundproc()) 268 progress = 1; /* progress bar on if fg */ 269 #endif 270 } 271 } 272 273 SLIST_INIT(&custom_headers); 274 while ((ch = getopt(argc, argv, ":46Aab:defgH:inN:o:pP:q:r:Rs:tT:u:vVx:")) != -1) { 275 switch (ch) { 276 case '4': 277 family = AF_INET; 278 break; 279 280 case '6': 281 #ifdef INET6 282 family = AF_INET6; 283 #else 284 warnx("INET6 support is not available; ignoring -6"); 285 #endif 286 break; 287 288 case 'A': 289 activefallback = 0; 290 passivemode = 0; 291 break; 292 293 case 'a': 294 anonftp = 1; 295 break; 296 297 case 'b': 298 ftp_buflen = strtol(optarg, &ep, 0); 299 if (ftp_buflen < 1 || *ep != '\0') 300 errx(1, "Bad buflen value: %s", optarg); 301 break; 302 303 case 'd': 304 options |= SO_DEBUG; 305 ftp_debug++; 306 break; 307 308 case 'e': 309 #ifndef NO_EDITCOMPLETE 310 editing = 0; 311 #endif 312 break; 313 314 case 'f': 315 flushcache = 1; 316 break; 317 318 case 'g': 319 doglob = 0; 320 break; 321 322 case 'H': 323 p = ftp_malloc(sizeof(*p)); 324 p->header = ftp_strdup(optarg); 325 SLIST_INSERT_HEAD(&custom_headers, p, entries); 326 break; 327 328 case 'i': 329 interactive = 0; 330 break; 331 332 case 'n': 333 autologin = 0; 334 break; 335 336 case 'N': 337 if (strlcpy(netrc, optarg, sizeof(netrc)) 338 >= sizeof(netrc)) 339 errx(1, "%s: %s", optarg, 340 strerror(ENAMETOOLONG)); 341 break; 342 343 case 'o': 344 outfile = ftp_strdup(optarg); 345 if (strcmp(outfile, "-") == 0) 346 ttyout = stderr; 347 break; 348 349 case 'p': 350 passivemode = 1; 351 activefallback = 0; 352 break; 353 354 case 'P': 355 ftpport = optarg; 356 break; 357 358 case 'q': 359 quit_time = (int)strtol(optarg, &ep, 10); 360 if (quit_time < 1 || *ep != '\0') 361 errx(1, "Bad quit value: %s", optarg); 362 break; 363 364 case 'r': 365 retry_connect = (int)strtol(optarg, &ep, 10); 366 if (retry_connect < 1 || *ep != '\0') 367 errx(1, "Bad retry value: %s", optarg); 368 break; 369 370 case 'R': 371 restartautofetch = 1; 372 break; 373 374 case 's': 375 src_addr = optarg; 376 break; 377 378 case 't': 379 trace = 1; 380 break; 381 382 case 'T': 383 { 384 int targc; 385 char *targv[6], *oac; 386 char cmdbuf[MAX_C_NAME]; 387 388 /* look for `dir,max[,incr]' */ 389 targc = 0; 390 (void)strlcpy(cmdbuf, "-T", sizeof(cmdbuf)); 391 targv[targc++] = cmdbuf; 392 oac = ftp_strdup(optarg); 393 394 while ((cp = strsep(&oac, ",")) != NULL) { 395 if (*cp == '\0') { 396 warnx("Bad throttle value `%s'", 397 optarg); 398 return usage(); 399 } 400 targv[targc++] = cp; 401 if (targc >= 5) 402 break; 403 } 404 if (parserate(targc, targv, 1) == -1) { 405 return usage(); 406 } 407 free(oac); 408 break; 409 } 410 411 case 'u': 412 { 413 isupload = 1; 414 interactive = 0; 415 upload_path = ftp_strdup(optarg); 416 417 break; 418 } 419 420 case 'v': 421 progress = verbose = 1; 422 break; 423 424 case 'V': 425 progress = verbose = 0; 426 break; 427 428 case 'x': 429 sndbuf_size = strsuftoi(optarg); 430 if (sndbuf_size < 1) 431 errx(1, "Bad xferbuf value: %s", optarg); 432 rcvbuf_size = sndbuf_size; 433 break; 434 435 case '?': 436 if (optopt == '?') { 437 return usage_help(); 438 } 439 warnx("-%c: unknown option", optopt); 440 return usage(); 441 442 case ':': 443 warnx("-%c: missing argument", optopt); 444 return usage(); 445 446 default: 447 errx(1, "unimplemented option -%c", ch); 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 } 496 if (netrc[0] == '\0' && localhome != NULL) { 497 if (strlcpy(netrc, localhome, sizeof(netrc)) >= sizeof(netrc) || 498 strlcat(netrc, "/.netrc", sizeof(netrc)) >= sizeof(netrc)) { 499 warnx("%s/.netrc: %s", localhome, 500 strerror(ENAMETOOLONG)); 501 netrc[0] = '\0'; 502 } 503 } 504 if (localhome == NULL) 505 localhome = ftp_strdup("/"); 506 507 /* 508 * Every anonymous FTP server I've encountered will accept the 509 * string "username@", and will append the hostname itself. We 510 * do this by default since many servers are picky about not 511 * having a FQDN in the anonymous password. 512 * - thorpej (at) NetBSD.org 513 */ 514 len = strlen(anonuser) + 2; 515 anonpass = ftp_malloc(len); 516 (void)strlcpy(anonpass, anonuser, len); 517 (void)strlcat(anonpass, "@", len); 518 519 /* 520 * set all the defaults for options defined in 521 * struct option optiontab[] declared in cmdtab.c 522 */ 523 setupoption("anonpass", getenv("FTPANONPASS"), anonpass); 524 setupoption("ftp_proxy", getenv(FTP_PROXY), ""); 525 setupoption("http_proxy", getenv(HTTP_PROXY), ""); 526 setupoption("https_proxy", getenv(HTTPS_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 setupoption("sslnoverify", getenv("FTPSSLNOVERIFY"), ""); 532 533 free(anonpass); 534 535 setttywidth(0); 536 #ifdef SIGINFO 537 (void)xsignal(SIGINFO, psummary); 538 #endif 539 (void)xsignal(SIGQUIT, psummary); 540 (void)xsignal(SIGUSR1, crankrate); 541 (void)xsignal(SIGUSR2, crankrate); 542 (void)xsignal(SIGWINCH, setttywidth); 543 544 if (argc > 0) { 545 if (isupload) { 546 rval = auto_put(argc, argv, upload_path); 547 sigint_or_rval_exit: 548 if (sigint_raised) { 549 (void)xsignal(SIGINT, SIG_DFL); 550 raise(SIGINT); 551 } 552 exit(rval); 553 } else if (strchr(argv[0], ':') != NULL 554 && ! isipv6addr(argv[0])) { 555 rval = auto_fetch(argc, argv); 556 if (rval >= 0) /* -1 == connected and cd-ed */ 557 goto sigint_or_rval_exit; 558 } else { 559 char *xargv[4], *uuser, *host; 560 char cmdbuf[MAXPATHLEN]; 561 562 if ((rval = sigsetjmp(toplevel, 1))) 563 goto sigint_or_rval_exit; 564 (void)xsignal(SIGINT, intr); 565 (void)xsignal(SIGPIPE, lostpeer); 566 uuser = NULL; 567 host = argv[0]; 568 cp = strchr(host, '@'); 569 if (cp) { 570 *cp = '\0'; 571 uuser = host; 572 host = cp + 1; 573 } 574 (void)strlcpy(cmdbuf, getprogname(), sizeof(cmdbuf)); 575 xargv[0] = cmdbuf; 576 xargv[1] = host; 577 xargv[2] = argv[1]; 578 xargv[3] = NULL; 579 do { 580 int oautologin; 581 582 oautologin = autologin; 583 if (uuser != NULL) { 584 anonftp = 0; 585 autologin = 0; 586 } 587 setpeer(argc+1, xargv); 588 autologin = oautologin; 589 if (connected == 1 && uuser != NULL) 590 (void)ftp_login(host, uuser, NULL); 591 if (!retry_connect) 592 break; 593 if (!connected) { 594 macnum = 0; 595 fprintf(ttyout, 596 "Retrying in %d seconds...\n", 597 retry_connect); 598 sleep(retry_connect); 599 } 600 } while (!connected); 601 retry_connect = 0; /* connected, stop hiding msgs */ 602 } 603 } 604 if (isupload) { 605 return usage(); 606 } 607 608 #ifndef NO_EDITCOMPLETE 609 controlediting(); 610 #endif /* !NO_EDITCOMPLETE */ 611 612 (void)sigsetjmp(toplevel, 1); 613 (void)xsignal(SIGINT, intr); 614 (void)xsignal(SIGPIPE, lostpeer); 615 for (;;) 616 cmdscanner(); 617 } 618 619 /* 620 * Generate a prompt 621 */ 622 char * 623 prompt(void) 624 { 625 static char **promptopt; 626 static char buf[MAXPATHLEN]; 627 628 if (promptopt == NULL) { 629 struct option *o; 630 631 o = getoption("prompt"); 632 if (o == NULL) 633 errx(1, "prompt: no such option `prompt'"); 634 promptopt = &(o->value); 635 } 636 formatbuf(buf, sizeof(buf), *promptopt ? *promptopt : DEFAULTPROMPT); 637 return (buf); 638 } 639 640 /* 641 * Generate an rprompt 642 */ 643 char * 644 rprompt(void) 645 { 646 static char **rpromptopt; 647 static char buf[MAXPATHLEN]; 648 649 if (rpromptopt == NULL) { 650 struct option *o; 651 652 o = getoption("rprompt"); 653 if (o == NULL) 654 errx(1, "rprompt: no such option `rprompt'"); 655 rpromptopt = &(o->value); 656 } 657 formatbuf(buf, sizeof(buf), *rpromptopt ? *rpromptopt : DEFAULTRPROMPT); 658 return (buf); 659 } 660 661 /* 662 * Command parser. 663 */ 664 void 665 cmdscanner(void) 666 { 667 struct cmd *c; 668 char *p; 669 #ifndef NO_EDITCOMPLETE 670 int ch; 671 size_t num; 672 #endif 673 int len; 674 char cmdbuf[MAX_C_NAME]; 675 676 for (;;) { 677 #ifndef NO_EDITCOMPLETE 678 if (!editing) { 679 #endif /* !NO_EDITCOMPLETE */ 680 if (fromatty) { 681 fputs(prompt(), ttyout); 682 p = rprompt(); 683 if (*p) 684 fprintf(ttyout, "%s ", p); 685 } 686 (void)fflush(ttyout); 687 len = get_line(stdin, line, sizeof(line), NULL); 688 switch (len) { 689 case -1: /* EOF */ 690 case -2: /* error */ 691 if (fromatty) 692 putc('\n', ttyout); 693 justquit(); 694 /* NOTREACHED */ 695 case -3: /* too long; try again */ 696 fputs("Sorry, input line is too long.\n", 697 ttyout); 698 continue; 699 case 0: /* empty; try again */ 700 continue; 701 default: /* all ok */ 702 break; 703 } 704 #ifndef NO_EDITCOMPLETE 705 } else { 706 const char *buf; 707 HistEvent ev; 708 cursor_pos = NULL; 709 710 buf = el_gets(el, &ch); 711 num = ch; 712 if (buf == NULL || num == 0) { 713 if (fromatty) 714 putc('\n', ttyout); 715 justquit(); 716 } 717 if (num >= sizeof(line)) { 718 fputs("Sorry, input line is too long.\n", 719 ttyout); 720 break; 721 } 722 memcpy(line, buf, num); 723 if (line[--num] == '\n') { 724 line[num] = '\0'; 725 if (num == 0) 726 break; 727 } 728 history(hist, &ev, H_ENTER, buf); 729 } 730 #endif /* !NO_EDITCOMPLETE */ 731 732 makeargv(); 733 if (margc == 0) 734 continue; 735 c = getcmd(margv[0]); 736 if (c == (struct cmd *)-1) { 737 fputs("?Ambiguous command.\n", ttyout); 738 continue; 739 } 740 if (c == NULL) { 741 #if !defined(NO_EDITCOMPLETE) 742 /* 743 * attempt to el_parse() unknown commands. 744 * any command containing a ':' would be parsed 745 * as "[prog:]cmd ...", and will result in a 746 * false positive if prog != "ftp", so treat 747 * such commands as invalid. 748 */ 749 if (strchr(margv[0], ':') != NULL || 750 !editing || 751 el_parse(el, margc, (void *)margv) != 0) 752 #endif /* !NO_EDITCOMPLETE */ 753 fputs("?Invalid command.\n", ttyout); 754 continue; 755 } 756 if (c->c_conn && !connected) { 757 fputs("Not connected.\n", ttyout); 758 continue; 759 } 760 confirmrest = 0; 761 (void)strlcpy(cmdbuf, c->c_name, sizeof(cmdbuf)); 762 margv[0] = cmdbuf; 763 (*c->c_handler)(margc, margv); 764 if (bell && c->c_bell) 765 (void)putc('\007', ttyout); 766 if (c->c_handler != help) 767 break; 768 } 769 (void)xsignal(SIGINT, intr); 770 (void)xsignal(SIGPIPE, lostpeer); 771 } 772 773 struct cmd * 774 getcmd(const char *name) 775 { 776 const char *p, *q; 777 struct cmd *c, *found; 778 int nmatches; 779 ptrdiff_t longest; 780 781 if (name == NULL) 782 return (0); 783 784 longest = 0; 785 nmatches = 0; 786 found = 0; 787 for (c = cmdtab; (p = c->c_name) != NULL; c++) { 788 for (q = name; *q == *p++; q++) 789 if (*q == 0) /* exact match? */ 790 return (c); 791 if (!*q) { /* the name was a prefix */ 792 if (q - name > longest) { 793 longest = q - name; 794 nmatches = 1; 795 found = c; 796 } else if (q - name == longest) 797 nmatches++; 798 } 799 } 800 if (nmatches > 1) 801 return ((struct cmd *)-1); 802 return (found); 803 } 804 805 /* 806 * Slice a string up into argc/argv. 807 */ 808 809 static int slrflag; 810 811 void 812 makeargv(void) 813 { 814 char *argp; 815 816 stringbase = line; /* scan from first of buffer */ 817 argbase = argbuf; /* store from first of buffer */ 818 slrflag = 0; 819 marg_sl->sl_cur = 0; /* reset to start of marg_sl */ 820 for (margc = 0; ; margc++) { 821 argp = slurpstring(); 822 ftp_sl_add(marg_sl, argp); 823 if (argp == NULL) 824 break; 825 } 826 #ifndef NO_EDITCOMPLETE 827 if (cursor_pos == line) { 828 cursor_argc = 0; 829 cursor_argo = 0; 830 } else if (cursor_pos != NULL) { 831 cursor_argc = margc; 832 cursor_argo = strlen(margv[margc-1]); 833 } 834 #endif /* !NO_EDITCOMPLETE */ 835 } 836 837 #ifdef NO_EDITCOMPLETE 838 #define INC_CHKCURSOR(x) (x)++ 839 #else /* !NO_EDITCOMPLETE */ 840 #define INC_CHKCURSOR(x) { (x)++ ; \ 841 if (x == cursor_pos) { \ 842 cursor_argc = margc; \ 843 cursor_argo = ap-argbase; \ 844 cursor_pos = NULL; \ 845 } } 846 847 #endif /* !NO_EDITCOMPLETE */ 848 849 /* 850 * Parse string into argbuf; 851 * implemented with FSM to 852 * handle quoting and strings 853 */ 854 char * 855 slurpstring(void) 856 { 857 static char bangstr[2] = { '!', '\0' }; 858 static char dollarstr[2] = { '$', '\0' }; 859 int got_one = 0; 860 char *sb = stringbase; 861 char *ap = argbase; 862 char *tmp = argbase; /* will return this if token found */ 863 864 if (*sb == '!' || *sb == '$') { /* recognize ! as a token for shell */ 865 switch (slrflag) { /* and $ as token for macro invoke */ 866 case 0: 867 slrflag++; 868 INC_CHKCURSOR(stringbase); 869 return ((*sb == '!') ? bangstr : dollarstr); 870 case 1: 871 slrflag++; 872 altarg = stringbase; 873 break; 874 default: 875 break; 876 } 877 } 878 879 S0: 880 switch (*sb) { 881 882 case '\0': 883 goto OUT; 884 885 case ' ': 886 case '\t': 887 INC_CHKCURSOR(sb); 888 goto S0; 889 890 default: 891 switch (slrflag) { 892 case 0: 893 slrflag++; 894 break; 895 case 1: 896 slrflag++; 897 altarg = sb; 898 break; 899 default: 900 break; 901 } 902 goto S1; 903 } 904 905 S1: 906 switch (*sb) { 907 908 case ' ': 909 case '\t': 910 case '\0': 911 goto OUT; /* end of token */ 912 913 case '\\': 914 INC_CHKCURSOR(sb); 915 goto S2; /* slurp next character */ 916 917 case '"': 918 INC_CHKCURSOR(sb); 919 goto S3; /* slurp quoted string */ 920 921 default: 922 *ap = *sb; /* add character to token */ 923 ap++; 924 INC_CHKCURSOR(sb); 925 got_one = 1; 926 goto S1; 927 } 928 929 S2: 930 switch (*sb) { 931 932 case '\0': 933 goto OUT; 934 935 default: 936 *ap = *sb; 937 ap++; 938 INC_CHKCURSOR(sb); 939 got_one = 1; 940 goto S1; 941 } 942 943 S3: 944 switch (*sb) { 945 946 case '\0': 947 goto OUT; 948 949 case '"': 950 INC_CHKCURSOR(sb); 951 goto S1; 952 953 default: 954 *ap = *sb; 955 ap++; 956 INC_CHKCURSOR(sb); 957 got_one = 1; 958 goto S3; 959 } 960 961 OUT: 962 if (got_one) 963 *ap++ = '\0'; 964 argbase = ap; /* update storage pointer */ 965 stringbase = sb; /* update scan pointer */ 966 if (got_one) { 967 return (tmp); 968 } 969 switch (slrflag) { 970 case 0: 971 slrflag++; 972 break; 973 case 1: 974 slrflag++; 975 altarg = NULL; 976 break; 977 default: 978 break; 979 } 980 return (NULL); 981 } 982 983 /* 984 * Help/usage command. 985 * Call each command handler with argc == 0 and argv[0] == name. 986 */ 987 void 988 help(int argc, char *argv[]) 989 { 990 struct cmd *c; 991 char *nargv[1], *cmd; 992 const char *p; 993 int isusage; 994 995 cmd = argv[0]; 996 isusage = (strcmp(cmd, "usage") == 0); 997 if (argc == 0 || (isusage && argc == 1)) { 998 UPRINTF("usage: %s [command ...]\n", cmd); 999 return; 1000 } 1001 if (argc == 1) { 1002 StringList *buf; 1003 1004 buf = ftp_sl_init(); 1005 fprintf(ttyout, 1006 "%sommands may be abbreviated. Commands are:\n\n", 1007 proxy ? "Proxy c" : "C"); 1008 for (c = cmdtab; (p = c->c_name) != NULL; c++) 1009 if (!proxy || c->c_proxy) 1010 ftp_sl_add(buf, ftp_strdup(p)); 1011 list_vertical(buf); 1012 sl_free(buf, 1); 1013 return; 1014 } 1015 1016 #define HELPINDENT ((int) sizeof("disconnect")) 1017 1018 while (--argc > 0) { 1019 char *arg; 1020 char cmdbuf[MAX_C_NAME]; 1021 1022 arg = *++argv; 1023 c = getcmd(arg); 1024 if (c == (struct cmd *)-1) 1025 fprintf(ttyout, "?Ambiguous %s command `%s'\n", 1026 cmd, arg); 1027 else if (c == NULL) 1028 fprintf(ttyout, "?Invalid %s command `%s'\n", 1029 cmd, arg); 1030 else { 1031 if (isusage) { 1032 (void)strlcpy(cmdbuf, c->c_name, sizeof(cmdbuf)); 1033 nargv[0] = cmdbuf; 1034 (*c->c_handler)(0, nargv); 1035 } else 1036 fprintf(ttyout, "%-*s\t%s\n", HELPINDENT, 1037 c->c_name, c->c_help); 1038 } 1039 } 1040 } 1041 1042 struct option * 1043 getoption(const char *name) 1044 { 1045 const char *p; 1046 struct option *c; 1047 1048 if (name == NULL) 1049 return (NULL); 1050 for (c = optiontab; (p = c->name) != NULL; c++) { 1051 if (strcasecmp(p, name) == 0) 1052 return (c); 1053 } 1054 return (NULL); 1055 } 1056 1057 char * 1058 getoptionvalue(const char *name) 1059 { 1060 struct option *c; 1061 1062 if (name == NULL) 1063 errx(1, "getoptionvalue: invoked with NULL name"); 1064 c = getoption(name); 1065 if (c != NULL) 1066 return (c->value); 1067 errx(1, "getoptionvalue: invoked with unknown option `%s'", name); 1068 /* NOTREACHED */ 1069 } 1070 1071 static void 1072 setupoption(const char *name, const char *value, const char *defaultvalue) 1073 { 1074 set_option(name, value ? value : defaultvalue, 0); 1075 } 1076 1077 static void 1078 synopsis(FILE * stream) 1079 { 1080 const char * progname = getprogname(); 1081 1082 fprintf(stream, 1083 "usage: %s [-46AadefginpRtVv] [-N NETRC] [-o OUTPUT] [-P PORT] [-q QUITTIME]\n" 1084 " [-r RETRY] [-s SRCADDR] [-T DIR,MAX[,INC]] [-x XFERSIZE]\n" 1085 " [[USER@]HOST [PORT]]\n" 1086 " [[USER@]HOST:[PATH][/]]\n" 1087 " [file:///PATH]\n" 1088 " [ftp://[USER[:PASSWORD]@]HOST[:PORT]/PATH[/][;type=TYPE]]\n" 1089 " [http://[USER[:PASSWORD]@]HOST[:PORT]/PATH]\n" 1090 #ifdef WITH_SSL 1091 " [https://[USER[:PASSWORD]@]HOST[:PORT]/PATH]\n" 1092 #endif 1093 " ...\n" 1094 " %s -u URL FILE ...\n" 1095 " %s -?\n", 1096 progname, progname, progname); 1097 } 1098 1099 static int 1100 usage_help(void) 1101 { 1102 synopsis(stdout); 1103 #ifndef NO_USAGE 1104 printf( 1105 " -4 Only use IPv4 addresses\n" 1106 " -6 Only use IPv6 addresses\n" 1107 " -A Force active mode\n" 1108 " -a Use anonymous login\n" 1109 " -b BUFLEN Use BUFLEN bytes for fetch buffer\n" 1110 " -d Enable debugging\n" 1111 " -e Disable command-line editing\n" 1112 " -f Force cache reload for FTP or HTTP proxy transfers\n" 1113 " -g Disable file name globbing\n" 1114 " -i Disable interactive prompt during multiple file transfers\n" 1115 " -N NETRC Use NETRC instead of ~/.netrc\n" 1116 " -n Disable auto-login\n" 1117 " -o OUTPUT Save auto-fetched files to OUTPUT\n" 1118 " -P PORT Use port PORT\n" 1119 " -p Force passive mode\n" 1120 " -q QUITTIME Quit if connection stalls for QUITTIME seconds\n" 1121 " -R Restart non-proxy auto-fetch\n" 1122 " -r RETRY Retry failed connection attempts after RETRY seconds\n" 1123 " -s SRCADDR Use source address SRCADDR\n" 1124 " -t Enable packet tracing\n" 1125 " -T DIR,MAX[,INC]\n" 1126 " Set maximum transfer rate for direction DIR to MAX bytes/s,\n" 1127 " with optional increment INC bytes/s\n" 1128 " -u URL URL to upload file arguments to\n" 1129 " -V Disable verbose and progress\n" 1130 " -v Enable verbose and progress\n" 1131 " -x XFERSIZE Set socket send and receive size to XFERSIZE\n" 1132 " -? Display this help and exit\n" 1133 ); 1134 #endif 1135 return EXIT_SUCCESS; 1136 } 1137 1138 static int 1139 usage(void) 1140 { 1141 synopsis(stderr); 1142 return EXIT_FAILURE; 1143 } 1144
Indexes created Thu Sep 25 08:09:54 GMT 2025