1 /* $NetBSD: main.c,v 1.20 2015/10/04 04:53:26 lukem Exp $ */ 2 /* from NetBSD: main.c,v 1.123 2015/04/23 23:31:23 lukem Exp */ 3 4 /*- 5 * Copyright (c) 1996-2015 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 1996-2015 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 1.123 2015/04/23 23:31:23 lukem 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 HTTPS_PROXY "https_proxy" /* env var with HTTPS proxy location */ 137 #define NO_PROXY "no_proxy" /* env var with list of non-proxied 138 * hosts, comma or space separated */ 139 140 __dead static void usage(void); 141 static void setupoption(const char *, const char *, const char *); 142 143 int 144 main(int volatile argc, char **volatile argv) 145 { 146 int ch, rval; 147 struct passwd *pw; 148 char *cp, *ep, *anonpass, *upload_path, *src_addr; 149 const char *anonuser; 150 int dumbterm, isupload; 151 size_t len; 152 153 tzset(); 154 #if defined(HAVE_SETLOCALE) 155 setlocale(LC_ALL, ""); 156 #endif 157 setprogname(argv[0]); 158 159 sigint_raised = 0; 160 161 ftpport = "ftp"; 162 httpport = "http"; 163 #ifdef WITH_SSL 164 httpsport = "https"; 165 #endif 166 gateport = NULL; 167 cp = getenv("FTPSERVERPORT"); 168 if (cp != NULL) 169 gateport = cp; 170 else 171 gateport = "ftpgate"; 172 doglob = 1; 173 interactive = 1; 174 autologin = 1; 175 passivemode = 1; 176 activefallback = 1; 177 preserve = 1; 178 verbose = 0; 179 progress = 0; 180 gatemode = 0; 181 data = -1; 182 outfile = NULL; 183 restartautofetch = 0; 184 #ifndef NO_EDITCOMPLETE 185 editing = 0; 186 el = NULL; 187 hist = NULL; 188 #endif 189 bytes = 0; 190 mark = HASHBYTES; 191 rate_get = 0; 192 rate_get_incr = DEFAULTINCR; 193 rate_put = 0; 194 rate_put_incr = DEFAULTINCR; 195 #ifdef INET6 196 epsv4 = 1; 197 epsv6 = 1; 198 #else 199 epsv4 = 0; 200 epsv6 = 0; 201 #endif 202 epsv4bad = 0; 203 epsv6bad = 0; 204 src_addr = NULL; 205 upload_path = NULL; 206 isupload = 0; 207 reply_callback = NULL; 208 #ifdef INET6 209 family = AF_UNSPEC; 210 #else 211 family = AF_INET; /* force AF_INET if no INET6 support */ 212 #endif 213 214 netrc[0] = '\0'; 215 cp = getenv("NETRC"); 216 if (cp != NULL && strlcpy(netrc, cp, sizeof(netrc)) >= sizeof(netrc)) 217 errx(1, "$NETRC `%s': %s", cp, strerror(ENAMETOOLONG)); 218 219 marg_sl = ftp_sl_init(); 220 if ((tmpdir = getenv("TMPDIR")) == NULL) 221 tmpdir = _PATH_TMP; 222 223 /* Set default operation mode based on FTPMODE environment variable */ 224 if ((cp = getenv("FTPMODE")) != NULL) { 225 if (strcasecmp(cp, "passive") == 0) { 226 passivemode = 1; 227 activefallback = 0; 228 } else if (strcasecmp(cp, "active") == 0) { 229 passivemode = 0; 230 activefallback = 0; 231 } else if (strcasecmp(cp, "gate") == 0) { 232 gatemode = 1; 233 } else if (strcasecmp(cp, "auto") == 0) { 234 passivemode = 1; 235 activefallback = 1; 236 } else 237 warnx("Unknown $FTPMODE `%s'; using defaults", cp); 238 } 239 240 if (strcmp(getprogname(), "pftp") == 0) { 241 passivemode = 1; 242 activefallback = 0; 243 } else if (strcmp(getprogname(), "gate-ftp") == 0) 244 gatemode = 1; 245 246 gateserver = getenv("FTPSERVER"); 247 if (gateserver == NULL || *gateserver == '\0') 248 gateserver = GATE_SERVER; 249 if (gatemode) { 250 if (*gateserver == '\0') { 251 warnx( 252 "Neither $FTPSERVER nor GATE_SERVER is defined; disabling gate-ftp"); 253 gatemode = 0; 254 } 255 } 256 257 cp = getenv("TERM"); 258 if (cp == NULL || strcmp(cp, "dumb") == 0) 259 dumbterm = 1; 260 else 261 dumbterm = 0; 262 fromatty = isatty(fileno(stdin)); 263 ttyout = stdout; 264 if (isatty(fileno(ttyout))) { 265 verbose = 1; /* verbose if to a tty */ 266 if (! dumbterm) { 267 #ifndef NO_EDITCOMPLETE 268 if (fromatty) /* editing mode on if tty is usable */ 269 editing = 1; 270 #endif 271 #ifndef NO_PROGRESS 272 if (foregroundproc()) 273 progress = 1; /* progress bar on if fg */ 274 #endif 275 } 276 } 277 278 while ((ch = getopt(argc, argv, "46AadefginN:o:pP:q:r:Rs:tT:u:vVx:")) != -1) { 279 switch (ch) { 280 case '4': 281 family = AF_INET; 282 break; 283 284 case '6': 285 #ifdef INET6 286 family = AF_INET6; 287 #else 288 warnx("INET6 support is not available; ignoring -6"); 289 #endif 290 break; 291 292 case 'A': 293 activefallback = 0; 294 passivemode = 0; 295 break; 296 297 case 'a': 298 anonftp = 1; 299 break; 300 301 case 'd': 302 options |= SO_DEBUG; 303 ftp_debug++; 304 break; 305 306 case 'e': 307 #ifndef NO_EDITCOMPLETE 308 editing = 0; 309 #endif 310 break; 311 312 case 'f': 313 flushcache = 1; 314 break; 315 316 case 'g': 317 doglob = 0; 318 break; 319 320 case 'i': 321 interactive = 0; 322 break; 323 324 case 'n': 325 autologin = 0; 326 break; 327 328 case 'N': 329 if (strlcpy(netrc, optarg, sizeof(netrc)) 330 >= sizeof(netrc)) 331 errx(1, "%s: %s", optarg, 332 strerror(ENAMETOOLONG)); 333 break; 334 335 case 'o': 336 outfile = optarg; 337 if (strcmp(outfile, "-") == 0) 338 ttyout = stderr; 339 break; 340 341 case 'p': 342 passivemode = 1; 343 activefallback = 0; 344 break; 345 346 case 'P': 347 ftpport = optarg; 348 break; 349 350 case 'q': 351 quit_time = strtol(optarg, &ep, 10); 352 if (quit_time < 1 || *ep != '\0') 353 errx(1, "Bad quit value: %s", optarg); 354 break; 355 356 case 'r': 357 retry_connect = strtol(optarg, &ep, 10); 358 if (retry_connect < 1 || *ep != '\0') 359 errx(1, "Bad retry value: %s", optarg); 360 break; 361 362 case 'R': 363 restartautofetch = 1; 364 break; 365 366 case 's': 367 src_addr = optarg; 368 break; 369 370 case 't': 371 trace = 1; 372 break; 373 374 case 'T': 375 { 376 int targc; 377 char *targv[6], *oac; 378 char cmdbuf[MAX_C_NAME]; 379 380 /* look for `dir,max[,incr]' */ 381 targc = 0; 382 (void)strlcpy(cmdbuf, "-T", sizeof(cmdbuf)); 383 targv[targc++] = cmdbuf; 384 oac = ftp_strdup(optarg); 385 386 while ((cp = strsep(&oac, ",")) != NULL) { 387 if (*cp == '\0') { 388 warnx("Bad throttle value `%s'", 389 optarg); 390 usage(); 391 /* NOTREACHED */ 392 } 393 targv[targc++] = cp; 394 if (targc >= 5) 395 break; 396 } 397 if (parserate(targc, targv, 1) == -1) 398 usage(); 399 free(oac); 400 break; 401 } 402 403 case 'u': 404 { 405 isupload = 1; 406 interactive = 0; 407 upload_path = ftp_strdup(optarg); 408 409 break; 410 } 411 412 case 'v': 413 progress = verbose = 1; 414 break; 415 416 case 'V': 417 progress = verbose = 0; 418 break; 419 420 case 'x': 421 sndbuf_size = strsuftoi(optarg); 422 if (sndbuf_size < 1) 423 errx(1, "Bad xferbuf value: %s", optarg); 424 rcvbuf_size = sndbuf_size; 425 break; 426 427 default: 428 usage(); 429 } 430 } 431 /* set line buffering on ttyout */ 432 setvbuf(ttyout, NULL, _IOLBF, 0); 433 argc -= optind; 434 argv += optind; 435 436 cpend = 0; /* no pending replies */ 437 proxy = 0; /* proxy not active */ 438 crflag = 1; /* strip c.r. on ascii gets */ 439 sendport = -1; /* not using ports */ 440 441 if (src_addr != NULL) { 442 struct addrinfo hints; 443 int error; 444 445 memset(&hints, 0, sizeof(hints)); 446 hints.ai_family = family; 447 hints.ai_socktype = SOCK_STREAM; 448 hints.ai_flags = AI_PASSIVE; 449 error = getaddrinfo(src_addr, NULL, &hints, &bindai); 450 if (error) { 451 errx(1, "Can't lookup `%s': %s", src_addr, 452 (error == EAI_SYSTEM) ? strerror(errno) 453 : gai_strerror(error)); 454 } 455 } 456 457 /* 458 * Cache the user name and home directory. 459 */ 460 localhome = NULL; 461 localname = NULL; 462 anonuser = "anonymous"; 463 cp = getenv("HOME"); 464 if (! EMPTYSTRING(cp)) 465 localhome = ftp_strdup(cp); 466 pw = NULL; 467 cp = getlogin(); 468 if (cp != NULL) 469 pw = getpwnam(cp); 470 if (pw == NULL) 471 pw = getpwuid(getuid()); 472 if (pw != NULL) { 473 if (localhome == NULL && !EMPTYSTRING(pw->pw_dir)) 474 localhome = ftp_strdup(pw->pw_dir); 475 localname = ftp_strdup(pw->pw_name); 476 anonuser = localname; 477 } 478 if (netrc[0] == '\0' && localhome != NULL) { 479 if (strlcpy(netrc, localhome, sizeof(netrc)) >= sizeof(netrc) || 480 strlcat(netrc, "/.netrc", sizeof(netrc)) >= sizeof(netrc)) { 481 warnx("%s/.netrc: %s", localhome, 482 strerror(ENAMETOOLONG)); 483 netrc[0] = '\0'; 484 } 485 } 486 if (localhome == NULL) 487 localhome = ftp_strdup("/"); 488 489 /* 490 * Every anonymous FTP server I've encountered will accept the 491 * string "username@", and will append the hostname itself. We 492 * do this by default since many servers are picky about not 493 * having a FQDN in the anonymous password. 494 * - thorpej@NetBSD.org 495 */ 496 len = strlen(anonuser) + 2; 497 anonpass = ftp_malloc(len); 498 (void)strlcpy(anonpass, anonuser, len); 499 (void)strlcat(anonpass, "@", len); 500 501 /* 502 * set all the defaults for options defined in 503 * struct option optiontab[] declared in cmdtab.c 504 */ 505 setupoption("anonpass", getenv("FTPANONPASS"), anonpass); 506 setupoption("ftp_proxy", getenv(FTP_PROXY), ""); 507 setupoption("http_proxy", getenv(HTTP_PROXY), ""); 508 setupoption("https_proxy", getenv(HTTPS_PROXY), ""); 509 setupoption("no_proxy", getenv(NO_PROXY), ""); 510 setupoption("pager", getenv("PAGER"), DEFAULTPAGER); 511 setupoption("prompt", getenv("FTPPROMPT"), DEFAULTPROMPT); 512 setupoption("rprompt", getenv("FTPRPROMPT"), DEFAULTRPROMPT); 513 514 free(anonpass); 515 516 setttywidth(0); 517 #ifdef SIGINFO 518 (void)xsignal(SIGINFO, psummary); 519 #endif 520 (void)xsignal(SIGQUIT, psummary); 521 (void)xsignal(SIGUSR1, crankrate); 522 (void)xsignal(SIGUSR2, crankrate); 523 (void)xsignal(SIGWINCH, setttywidth); 524 525 if (argc > 0) { 526 if (isupload) { 527 rval = auto_put(argc, argv, upload_path); 528 sigint_or_rval_exit: 529 if (sigint_raised) { 530 (void)xsignal(SIGINT, SIG_DFL); 531 raise(SIGINT); 532 } 533 exit(rval); 534 } else if (strchr(argv[0], ':') != NULL 535 && ! isipv6addr(argv[0])) { 536 rval = auto_fetch(argc, argv); 537 if (rval >= 0) /* -1 == connected and cd-ed */ 538 goto sigint_or_rval_exit; 539 } else { 540 char *xargv[4], *uuser, *host; 541 char cmdbuf[MAXPATHLEN]; 542 543 if ((rval = sigsetjmp(toplevel, 1))) 544 goto sigint_or_rval_exit; 545 (void)xsignal(SIGINT, intr); 546 (void)xsignal(SIGPIPE, lostpeer); 547 uuser = NULL; 548 host = argv[0]; 549 cp = strchr(host, '@'); 550 if (cp) { 551 *cp = '\0'; 552 uuser = host; 553 host = cp + 1; 554 } 555 (void)strlcpy(cmdbuf, getprogname(), sizeof(cmdbuf)); 556 xargv[0] = cmdbuf; 557 xargv[1] = host; 558 xargv[2] = argv[1]; 559 xargv[3] = NULL; 560 do { 561 int oautologin; 562 563 oautologin = autologin; 564 if (uuser != NULL) { 565 anonftp = 0; 566 autologin = 0; 567 } 568 setpeer(argc+1, xargv); 569 autologin = oautologin; 570 if (connected == 1 && uuser != NULL) 571 (void)ftp_login(host, uuser, NULL); 572 if (!retry_connect) 573 break; 574 if (!connected) { 575 macnum = 0; 576 fprintf(ttyout, 577 "Retrying in %d seconds...\n", 578 retry_connect); 579 sleep(retry_connect); 580 } 581 } while (!connected); 582 retry_connect = 0; /* connected, stop hiding msgs */ 583 } 584 } 585 if (isupload) 586 usage(); 587 588 #ifndef NO_EDITCOMPLETE 589 controlediting(); 590 #endif /* !NO_EDITCOMPLETE */ 591 592 (void)sigsetjmp(toplevel, 1); 593 (void)xsignal(SIGINT, intr); 594 (void)xsignal(SIGPIPE, lostpeer); 595 for (;;) 596 cmdscanner(); 597 } 598 599 /* 600 * Generate a prompt 601 */ 602 char * 603 prompt(void) 604 { 605 static char **promptopt; 606 static char buf[MAXPATHLEN]; 607 608 if (promptopt == NULL) { 609 struct option *o; 610 611 o = getoption("prompt"); 612 if (o == NULL) 613 errx(1, "prompt: no such option `prompt'"); 614 promptopt = &(o->value); 615 } 616 formatbuf(buf, sizeof(buf), *promptopt ? *promptopt : DEFAULTPROMPT); 617 return (buf); 618 } 619 620 /* 621 * Generate an rprompt 622 */ 623 char * 624 rprompt(void) 625 { 626 static char **rpromptopt; 627 static char buf[MAXPATHLEN]; 628 629 if (rpromptopt == NULL) { 630 struct option *o; 631 632 o = getoption("rprompt"); 633 if (o == NULL) 634 errx(1, "rprompt: no such option `rprompt'"); 635 rpromptopt = &(o->value); 636 } 637 formatbuf(buf, sizeof(buf), *rpromptopt ? *rpromptopt : DEFAULTRPROMPT); 638 return (buf); 639 } 640 641 /* 642 * Command parser. 643 */ 644 void 645 cmdscanner(void) 646 { 647 struct cmd *c; 648 char *p; 649 #ifndef NO_EDITCOMPLETE 650 int ch; 651 size_t num; 652 #endif 653 int len; 654 char cmdbuf[MAX_C_NAME]; 655 656 for (;;) { 657 #ifndef NO_EDITCOMPLETE 658 if (!editing) { 659 #endif /* !NO_EDITCOMPLETE */ 660 if (fromatty) { 661 fputs(prompt(), ttyout); 662 p = rprompt(); 663 if (*p) 664 fprintf(ttyout, "%s ", p); 665 } 666 (void)fflush(ttyout); 667 len = get_line(stdin, line, sizeof(line), NULL); 668 switch (len) { 669 case -1: /* EOF */ 670 case -2: /* error */ 671 if (fromatty) 672 putc('\n', ttyout); 673 quit(0, NULL); 674 /* NOTREACHED */ 675 case -3: /* too long; try again */ 676 fputs("Sorry, input line is too long.\n", 677 ttyout); 678 continue; 679 case 0: /* empty; try again */ 680 continue; 681 default: /* all ok */ 682 break; 683 } 684 #ifndef NO_EDITCOMPLETE 685 } else { 686 const char *buf; 687 HistEvent ev; 688 cursor_pos = NULL; 689 690 buf = el_gets(el, &ch); 691 num = ch; 692 if (buf == NULL || num == 0) { 693 if (fromatty) 694 putc('\n', ttyout); 695 quit(0, NULL); 696 } 697 if (num >= sizeof(line)) { 698 fputs("Sorry, input line is too long.\n", 699 ttyout); 700 break; 701 } 702 memcpy(line, buf, num); 703 if (line[--num] == '\n') { 704 line[num] = '\0'; 705 if (num == 0) 706 break; 707 } 708 history(hist, &ev, H_ENTER, buf); 709 } 710 #endif /* !NO_EDITCOMPLETE */ 711 712 makeargv(); 713 if (margc == 0) 714 continue; 715 c = getcmd(margv[0]); 716 if (c == (struct cmd *)-1) { 717 fputs("?Ambiguous command.\n", ttyout); 718 continue; 719 } 720 if (c == NULL) { 721 #if !defined(NO_EDITCOMPLETE) 722 /* 723 * attempt to el_parse() unknown commands. 724 * any command containing a ':' would be parsed 725 * as "[prog:]cmd ...", and will result in a 726 * false positive if prog != "ftp", so treat 727 * such commands as invalid. 728 */ 729 if (strchr(margv[0], ':') != NULL || 730 !editing || 731 el_parse(el, margc, (void *)margv) != 0) 732 #endif /* !NO_EDITCOMPLETE */ 733 fputs("?Invalid command.\n", ttyout); 734 continue; 735 } 736 if (c->c_conn && !connected) { 737 fputs("Not connected.\n", ttyout); 738 continue; 739 } 740 confirmrest = 0; 741 (void)strlcpy(cmdbuf, c->c_name, sizeof(cmdbuf)); 742 margv[0] = cmdbuf; 743 (*c->c_handler)(margc, margv); 744 if (bell && c->c_bell) 745 (void)putc('\007', ttyout); 746 if (c->c_handler != help) 747 break; 748 } 749 (void)xsignal(SIGINT, intr); 750 (void)xsignal(SIGPIPE, lostpeer); 751 } 752 753 struct cmd * 754 getcmd(const char *name) 755 { 756 const char *p, *q; 757 struct cmd *c, *found; 758 int nmatches, longest; 759 760 if (name == NULL) 761 return (0); 762 763 longest = 0; 764 nmatches = 0; 765 found = 0; 766 for (c = cmdtab; (p = c->c_name) != NULL; c++) { 767 for (q = name; *q == *p++; q++) 768 if (*q == 0) /* exact match? */ 769 return (c); 770 if (!*q) { /* the name was a prefix */ 771 if (q - name > longest) { 772 longest = q - name; 773 nmatches = 1; 774 found = c; 775 } else if (q - name == longest) 776 nmatches++; 777 } 778 } 779 if (nmatches > 1) 780 return ((struct cmd *)-1); 781 return (found); 782 } 783 784 /* 785 * Slice a string up into argc/argv. 786 */ 787 788 int slrflag; 789 790 void 791 makeargv(void) 792 { 793 char *argp; 794 795 stringbase = line; /* scan from first of buffer */ 796 argbase = argbuf; /* store from first of buffer */ 797 slrflag = 0; 798 marg_sl->sl_cur = 0; /* reset to start of marg_sl */ 799 for (margc = 0; ; margc++) { 800 argp = slurpstring(); 801 ftp_sl_add(marg_sl, argp); 802 if (argp == NULL) 803 break; 804 } 805 #ifndef NO_EDITCOMPLETE 806 if (cursor_pos == line) { 807 cursor_argc = 0; 808 cursor_argo = 0; 809 } else if (cursor_pos != NULL) { 810 cursor_argc = margc; 811 cursor_argo = strlen(margv[margc-1]); 812 } 813 #endif /* !NO_EDITCOMPLETE */ 814 } 815 816 #ifdef NO_EDITCOMPLETE 817 #define INC_CHKCURSOR(x) (x)++ 818 #else /* !NO_EDITCOMPLETE */ 819 #define INC_CHKCURSOR(x) { (x)++ ; \ 820 if (x == cursor_pos) { \ 821 cursor_argc = margc; \ 822 cursor_argo = ap-argbase; \ 823 cursor_pos = NULL; \ 824 } } 825 826 #endif /* !NO_EDITCOMPLETE */ 827 828 /* 829 * Parse string into argbuf; 830 * implemented with FSM to 831 * handle quoting and strings 832 */ 833 char * 834 slurpstring(void) 835 { 836 static char bangstr[2] = { '!', '\0' }; 837 static char dollarstr[2] = { '$', '\0' }; 838 int got_one = 0; 839 char *sb = stringbase; 840 char *ap = argbase; 841 char *tmp = argbase; /* will return this if token found */ 842 843 if (*sb == '!' || *sb == '$') { /* recognize ! as a token for shell */ 844 switch (slrflag) { /* and $ as token for macro invoke */ 845 case 0: 846 slrflag++; 847 INC_CHKCURSOR(stringbase); 848 return ((*sb == '!') ? bangstr : dollarstr); 849 /* NOTREACHED */ 850 case 1: 851 slrflag++; 852 altarg = stringbase; 853 break; 854 default: 855 break; 856 } 857 } 858 859 S0: 860 switch (*sb) { 861 862 case '\0': 863 goto OUT; 864 865 case ' ': 866 case '\t': 867 INC_CHKCURSOR(sb); 868 goto S0; 869 870 default: 871 switch (slrflag) { 872 case 0: 873 slrflag++; 874 break; 875 case 1: 876 slrflag++; 877 altarg = sb; 878 break; 879 default: 880 break; 881 } 882 goto S1; 883 } 884 885 S1: 886 switch (*sb) { 887 888 case ' ': 889 case '\t': 890 case '\0': 891 goto OUT; /* end of token */ 892 893 case '\\': 894 INC_CHKCURSOR(sb); 895 goto S2; /* slurp next character */ 896 897 case '"': 898 INC_CHKCURSOR(sb); 899 goto S3; /* slurp quoted string */ 900 901 default: 902 *ap = *sb; /* add character to token */ 903 ap++; 904 INC_CHKCURSOR(sb); 905 got_one = 1; 906 goto S1; 907 } 908 909 S2: 910 switch (*sb) { 911 912 case '\0': 913 goto OUT; 914 915 default: 916 *ap = *sb; 917 ap++; 918 INC_CHKCURSOR(sb); 919 got_one = 1; 920 goto S1; 921 } 922 923 S3: 924 switch (*sb) { 925 926 case '\0': 927 goto OUT; 928 929 case '"': 930 INC_CHKCURSOR(sb); 931 goto S1; 932 933 default: 934 *ap = *sb; 935 ap++; 936 INC_CHKCURSOR(sb); 937 got_one = 1; 938 goto S3; 939 } 940 941 OUT: 942 if (got_one) 943 *ap++ = '\0'; 944 argbase = ap; /* update storage pointer */ 945 stringbase = sb; /* update scan pointer */ 946 if (got_one) { 947 return (tmp); 948 } 949 switch (slrflag) { 950 case 0: 951 slrflag++; 952 break; 953 case 1: 954 slrflag++; 955 altarg = NULL; 956 break; 957 default: 958 break; 959 } 960 return (NULL); 961 } 962 963 /* 964 * Help/usage command. 965 * Call each command handler with argc == 0 and argv[0] == name. 966 */ 967 void 968 help(int argc, char *argv[]) 969 { 970 struct cmd *c; 971 char *nargv[1], *cmd; 972 const char *p; 973 int isusage; 974 975 cmd = argv[0]; 976 isusage = (strcmp(cmd, "usage") == 0); 977 if (argc == 0 || (isusage && argc == 1)) { 978 UPRINTF("usage: %s [command [...]]\n", cmd); 979 return; 980 } 981 if (argc == 1) { 982 StringList *buf; 983 984 buf = ftp_sl_init(); 985 fprintf(ttyout, 986 "%sommands may be abbreviated. Commands are:\n\n", 987 proxy ? "Proxy c" : "C"); 988 for (c = cmdtab; (p = c->c_name) != NULL; c++) 989 if (!proxy || c->c_proxy) 990 ftp_sl_add(buf, ftp_strdup(p)); 991 list_vertical(buf); 992 sl_free(buf, 1); 993 return; 994 } 995 996 #define HELPINDENT ((int) sizeof("disconnect")) 997 998 while (--argc > 0) { 999 char *arg; 1000 char cmdbuf[MAX_C_NAME]; 1001 1002 arg = *++argv; 1003 c = getcmd(arg); 1004 if (c == (struct cmd *)-1) 1005 fprintf(ttyout, "?Ambiguous %s command `%s'\n", 1006 cmd, arg); 1007 else if (c == NULL) 1008 fprintf(ttyout, "?Invalid %s command `%s'\n", 1009 cmd, arg); 1010 else { 1011 if (isusage) { 1012 (void)strlcpy(cmdbuf, c->c_name, sizeof(cmdbuf)); 1013 nargv[0] = cmdbuf; 1014 (*c->c_handler)(0, nargv); 1015 } else 1016 fprintf(ttyout, "%-*s\t%s\n", HELPINDENT, 1017 c->c_name, c->c_help); 1018 } 1019 } 1020 } 1021 1022 struct option * 1023 getoption(const char *name) 1024 { 1025 const char *p; 1026 struct option *c; 1027 1028 if (name == NULL) 1029 return (NULL); 1030 for (c = optiontab; (p = c->name) != NULL; c++) { 1031 if (strcasecmp(p, name) == 0) 1032 return (c); 1033 } 1034 return (NULL); 1035 } 1036 1037 char * 1038 getoptionvalue(const char *name) 1039 { 1040 struct option *c; 1041 1042 if (name == NULL) 1043 errx(1, "getoptionvalue: invoked with NULL name"); 1044 c = getoption(name); 1045 if (c != NULL) 1046 return (c->value); 1047 errx(1, "getoptionvalue: invoked with unknown option `%s'", name); 1048 /* NOTREACHED */ 1049 } 1050 1051 static void 1052 setupoption(const char *name, const char *value, const char *defaultvalue) 1053 { 1054 set_option(name, value ? value : defaultvalue, 0); 1055 } 1056 1057 void 1058 usage(void) 1059 { 1060 const char *progname = getprogname(); 1061 1062 (void)fprintf(stderr, 1063 "usage: %s [-46AadefginpRtVv] [-N netrc] [-o outfile] [-P port] [-q quittime]\n" 1064 " [-r retry] [-s srcaddr] [-T dir,max[,inc]] [-x xferbufsize]\n" 1065 " [[user@]host [port]] [host:path[/]] [file:///file]\n" 1066 " [ftp://[user[:pass]@]host[:port]/path[/]]\n" 1067 " [http://[user[:pass]@]host[:port]/path] [...]\n" 1068 #ifdef WITH_SSL 1069 " [https://[user[:pass]@]host[:port]/path] [...]\n" 1070 #endif 1071 " %s -u URL file [...]\n", progname, progname); 1072 exit(1); 1073 } 1074