main.c revision 1.104
1 /* $NetBSD: main.c,v 1.104 2007/04/17 05:52:03 lukem Exp $ */ 2 3 /*- 4 * Copyright (c) 1996-2005 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 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /* 40 * Copyright (c) 1985, 1989, 1993, 1994 41 * The Regents of the University of California. All rights reserved. 42 * 43 * Redistribution and use in source and binary forms, with or without 44 * modification, are permitted provided that the following conditions 45 * are met: 46 * 1. Redistributions of source code must retain the above copyright 47 * notice, this list of conditions and the following disclaimer. 48 * 2. Redistributions in binary form must reproduce the above copyright 49 * notice, this list of conditions and the following disclaimer in the 50 * documentation and/or other materials provided with the distribution. 51 * 3. Neither the name of the University nor the names of its contributors 52 * may be used to endorse or promote products derived from this software 53 * without specific prior written permission. 54 * 55 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 56 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 57 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 58 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 59 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 60 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 61 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 62 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 63 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 64 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 65 * SUCH DAMAGE. 66 */ 67 68 /* 69 * Copyright (C) 1997 and 1998 WIDE Project. 70 * All rights reserved. 71 * 72 * Redistribution and use in source and binary forms, with or without 73 * modification, are permitted provided that the following conditions 74 * are met: 75 * 1. Redistributions of source code must retain the above copyright 76 * notice, this list of conditions and the following disclaimer. 77 * 2. Redistributions in binary form must reproduce the above copyright 78 * notice, this list of conditions and the following disclaimer in the 79 * documentation and/or other materials provided with the distribution. 80 * 3. Neither the name of the project nor the names of its contributors 81 * may be used to endorse or promote products derived from this software 82 * without specific prior written permission. 83 * 84 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 85 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 86 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 87 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 88 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 89 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 90 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 91 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 92 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 93 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 94 * SUCH DAMAGE. 95 */ 96 97 #include <sys/cdefs.h> 98 #ifndef lint 99 __COPYRIGHT("@(#) Copyright (c) 1985, 1989, 1993, 1994\n\ 100 The Regents of the University of California. All rights reserved.\n"); 101 #endif /* not lint */ 102 103 #ifndef lint 104 #if 0 105 static char sccsid[] = "@(#)main.c 8.6 (Berkeley) 10/9/94"; 106 #else 107 __RCSID("$NetBSD: main.c,v 1.104 2007/04/17 05:52:03 lukem Exp $"); 108 #endif 109 #endif /* not lint */ 110 111 /* 112 * FTP User Program -- Command Interface. 113 */ 114 #include <sys/types.h> 115 #include <sys/socket.h> 116 117 #include <err.h> 118 #include <errno.h> 119 #include <netdb.h> 120 #include <paths.h> 121 #include <pwd.h> 122 #include <signal.h> 123 #include <stdio.h> 124 #include <stdlib.h> 125 #include <string.h> 126 #include <unistd.h> 127 #include <locale.h> 128 129 #define GLOBAL /* force GLOBAL decls in ftp_var.h to be declared */ 130 #include "ftp_var.h" 131 132 #define FTP_PROXY "ftp_proxy" /* env var with FTP proxy location */ 133 #define HTTP_PROXY "http_proxy" /* env var with HTTP proxy location */ 134 #define NO_PROXY "no_proxy" /* env var with list of non-proxied 135 * hosts, comma or space separated */ 136 137 static void setupoption(char *, char *, char *); 138 int main(int, char *[]); 139 140 int 141 main(int volatile argc, char **volatile argv) 142 { 143 int ch, rval; 144 struct passwd *pw; 145 char *cp, *ep, *anonuser, *anonpass, *upload_path, *src_addr; 146 int dumbterm, s, isupload; 147 size_t len; 148 socklen_t slen; 149 150 setlocale(LC_ALL, ""); 151 setprogname(argv[0]); 152 153 sigint_raised = 0; 154 155 ftpport = "ftp"; 156 httpport = "http"; 157 gateport = NULL; 158 cp = getenv("FTPSERVERPORT"); 159 if (cp != NULL) 160 gateport = cp; 161 else 162 gateport = "ftpgate"; 163 doglob = 1; 164 interactive = 1; 165 autologin = 1; 166 passivemode = 1; 167 activefallback = 1; 168 preserve = 1; 169 verbose = 0; 170 progress = 0; 171 gatemode = 0; 172 data = -1; 173 outfile = NULL; 174 restartautofetch = 0; 175 #ifndef NO_EDITCOMPLETE 176 editing = 0; 177 el = NULL; 178 hist = NULL; 179 #endif 180 bytes = 0; 181 mark = HASHBYTES; 182 rate_get = 0; 183 rate_get_incr = DEFAULTINCR; 184 rate_put = 0; 185 rate_put_incr = DEFAULTINCR; 186 #ifdef INET6 187 epsv4 = 1; 188 #else 189 epsv4 = 0; 190 #endif 191 epsv4bad = 0; 192 src_addr = NULL; 193 upload_path = NULL; 194 isupload = 0; 195 reply_callback = NULL; 196 family = AF_UNSPEC; 197 198 netrc[0] = '\0'; 199 cp = getenv("NETRC"); 200 if (cp != NULL && strlcpy(netrc, cp, sizeof(netrc)) >= sizeof(netrc)) 201 errx(1, "$NETRC `%s': %s", cp, strerror(ENAMETOOLONG)); 202 203 /* 204 * Get the default socket buffer sizes if we don't already have them. 205 * It doesn't matter which socket we do this to, because on the first 206 * call no socket buffer sizes will have been modified, so we are 207 * guaranteed to get the system defaults. 208 */ 209 s = socket(AF_INET, SOCK_STREAM, 0); 210 if (s == -1) 211 err(1, "Can't create socket to determine default socket sizes"); 212 slen = sizeof(rcvbuf_size); 213 if (getsockopt(s, SOL_SOCKET, SO_RCVBUF, 214 (void *)&rcvbuf_size, &slen) == -1) 215 err(1, "Unable to get default rcvbuf size"); 216 slen = sizeof(sndbuf_size); 217 if (getsockopt(s, SOL_SOCKET, SO_SNDBUF, 218 (void *)&sndbuf_size, &slen) == -1) 219 err(1, "Unable to get default sndbuf size"); 220 (void)close(s); 221 /* sanity check returned buffer sizes */ 222 if (rcvbuf_size <= 0) 223 rcvbuf_size = 8 * 1024; 224 if (sndbuf_size <= 0) 225 sndbuf_size = 8 * 1024; 226 227 if (sndbuf_size > 8 * 1024 * 1024) 228 sndbuf_size = 8 * 1024 * 1024; 229 if (rcvbuf_size > 8 * 1024 * 1024) 230 rcvbuf_size = 8 * 1024 * 1024; 231 232 marg_sl = ftp_sl_init(); 233 if ((tmpdir = getenv("TMPDIR")) == NULL) 234 tmpdir = _PATH_TMP; 235 236 /* Set default operation mode based on FTPMODE environment variable */ 237 if ((cp = getenv("FTPMODE")) != NULL) { 238 if (strcasecmp(cp, "passive") == 0) { 239 passivemode = 1; 240 activefallback = 0; 241 } else if (strcasecmp(cp, "active") == 0) { 242 passivemode = 0; 243 activefallback = 0; 244 } else if (strcasecmp(cp, "gate") == 0) { 245 gatemode = 1; 246 } else if (strcasecmp(cp, "auto") == 0) { 247 passivemode = 1; 248 activefallback = 1; 249 } else 250 warnx("Unknown $FTPMODE `%s'; using defaults", cp); 251 } 252 253 if (strcmp(getprogname(), "pftp") == 0) { 254 passivemode = 1; 255 activefallback = 0; 256 } else if (strcmp(getprogname(), "gate-ftp") == 0) 257 gatemode = 1; 258 259 gateserver = getenv("FTPSERVER"); 260 if (gateserver == NULL || *gateserver == '\0') 261 gateserver = GATE_SERVER; 262 if (gatemode) { 263 if (*gateserver == '\0') { 264 warnx( 265 "Neither $FTPSERVER nor GATE_SERVER is defined; disabling gate-ftp"); 266 gatemode = 0; 267 } 268 } 269 270 cp = getenv("TERM"); 271 if (cp == NULL || strcmp(cp, "dumb") == 0) 272 dumbterm = 1; 273 else 274 dumbterm = 0; 275 fromatty = isatty(fileno(stdin)); 276 ttyout = stdout; 277 if (isatty(fileno(ttyout))) { 278 verbose = 1; /* verbose if to a tty */ 279 if (! dumbterm) { 280 #ifndef NO_EDITCOMPLETE 281 if (fromatty) /* editing mode on if tty is usable */ 282 editing = 1; 283 #endif 284 #ifndef NO_PROGRESS 285 if (foregroundproc()) 286 progress = 1; /* progress bar on if fg */ 287 #endif 288 } 289 } 290 291 while ((ch = getopt(argc, argv, "46AadefginN:o:pP:q:r:Rs:tT:u:vV")) != -1) { 292 switch (ch) { 293 case '4': 294 family = AF_INET; 295 break; 296 297 case '6': 298 #ifdef INET6 299 family = AF_INET6; 300 #else 301 warnx("INET6 support is not available; ignoring -6"); 302 #endif 303 break; 304 305 case 'A': 306 activefallback = 0; 307 passivemode = 0; 308 break; 309 310 case 'a': 311 anonftp = 1; 312 break; 313 314 case 'd': 315 options |= SO_DEBUG; 316 ftp_debug++; 317 break; 318 319 case 'e': 320 #ifndef NO_EDITCOMPLETE 321 editing = 0; 322 #endif 323 break; 324 325 case 'f': 326 flushcache = 1; 327 break; 328 329 case 'g': 330 doglob = 0; 331 break; 332 333 case 'i': 334 interactive = 0; 335 break; 336 337 case 'n': 338 autologin = 0; 339 break; 340 341 case 'N': 342 if (strlcpy(netrc, optarg, sizeof(netrc)) 343 >= sizeof(netrc)) 344 errx(1, "%s: %s", optarg, 345 strerror(ENAMETOOLONG)); 346 break; 347 348 case 'o': 349 outfile = optarg; 350 if (strcmp(outfile, "-") == 0) 351 ttyout = stderr; 352 break; 353 354 case 'p': 355 passivemode = 1; 356 activefallback = 0; 357 break; 358 359 case 'P': 360 ftpport = optarg; 361 break; 362 363 case 'q': 364 quit_time = strtol(optarg, &ep, 10); 365 if (quit_time < 1 || *ep != '\0') 366 errx(1, "Bad quit value: %s", optarg); 367 break; 368 369 case 'r': 370 retry_connect = strtol(optarg, &ep, 10); 371 if (retry_connect < 1 || *ep != '\0') 372 errx(1, "Bad retry value: %s", optarg); 373 break; 374 375 case 'R': 376 restartautofetch = 1; 377 break; 378 379 case 's': 380 src_addr = optarg; 381 break; 382 383 case 't': 384 trace = 1; 385 break; 386 387 case 'T': 388 { 389 int targc; 390 char *targv[6], *oac; 391 392 /* look for `dir,max[,incr]' */ 393 targc = 0; 394 targv[targc++] = "-T"; 395 oac = ftp_strdup(optarg); 396 397 while ((cp = strsep(&oac, ",")) != NULL) { 398 if (*cp == '\0') { 399 warnx("Bad throttle value `%s'", 400 optarg); 401 usage(); 402 /* NOTREACHED */ 403 } 404 targv[targc++] = cp; 405 if (targc >= 5) 406 break; 407 } 408 if (parserate(targc, targv, 1) == -1) 409 usage(); 410 free(oac); 411 break; 412 } 413 414 case 'u': 415 { 416 isupload = 1; 417 interactive = 0; 418 upload_path = ftp_strdup(optarg); 419 420 break; 421 } 422 423 case 'v': 424 progress = verbose = 1; 425 break; 426 427 case 'V': 428 progress = verbose = 0; 429 break; 430 431 default: 432 usage(); 433 } 434 } 435 /* set line buffering on ttyout */ 436 setvbuf(ttyout, NULL, _IOLBF, 0); 437 argc -= optind; 438 argv += optind; 439 440 cpend = 0; /* no pending replies */ 441 proxy = 0; /* proxy not active */ 442 crflag = 1; /* strip c.r. on ascii gets */ 443 sendport = -1; /* not using ports */ 444 445 if (src_addr != NULL) { 446 struct addrinfo hints; 447 int error; 448 449 memset(&hints, 0, sizeof(hints)); 450 hints.ai_family = family; 451 hints.ai_socktype = SOCK_STREAM; 452 hints.ai_flags = AI_PASSIVE; 453 error = getaddrinfo(src_addr, NULL, &hints, &bindai); 454 if (error) { 455 errx(1, "Can't lookup `%s': %s", src_addr, 456 (error == EAI_SYSTEM) ? strerror(errno) 457 : gai_strerror(error)); 458 } 459 } 460 461 /* 462 * Cache the user name and home directory. 463 */ 464 localhome = NULL; 465 localname = NULL; 466 anonuser = "anonymous"; 467 cp = getenv("HOME"); 468 if (! EMPTYSTRING(cp)) 469 localhome = ftp_strdup(cp); 470 pw = NULL; 471 cp = getlogin(); 472 if (cp != NULL) 473 pw = getpwnam(cp); 474 if (pw == NULL) 475 pw = getpwuid(getuid()); 476 if (pw != NULL) { 477 if (localhome == NULL && !EMPTYSTRING(pw->pw_dir)) 478 localhome = ftp_strdup(pw->pw_dir); 479 localname = ftp_strdup(pw->pw_name); 480 anonuser = localname; 481 } 482 if (netrc[0] == '\0' && localhome != NULL) { 483 if (strlcpy(netrc, localhome, sizeof(netrc)) >= sizeof(netrc) || 484 strlcat(netrc, "/.netrc", sizeof(netrc)) >= sizeof(netrc)) { 485 warnx("%s/.netrc: %s", localhome, 486 strerror(ENAMETOOLONG)); 487 netrc[0] = '\0'; 488 } 489 } 490 if (localhome == NULL) 491 localhome = ftp_strdup("/"); 492 493 /* 494 * Every anonymous FTP server I've encountered will accept the 495 * string "username@", and will append the hostname itself. We 496 * do this by default since many servers are picky about not 497 * having a FQDN in the anonymous password. 498 * - thorpej (at) NetBSD.org 499 */ 500 len = strlen(anonuser) + 2; 501 anonpass = ftp_malloc(len); 502 (void)strlcpy(anonpass, anonuser, len); 503 (void)strlcat(anonpass, "@", len); 504 505 /* 506 * set all the defaults for options defined in 507 * struct option optiontab[] declared in cmdtab.c 508 */ 509 setupoption("anonpass", getenv("FTPANONPASS"), anonpass); 510 setupoption("ftp_proxy", getenv(FTP_PROXY), ""); 511 setupoption("http_proxy", getenv(HTTP_PROXY), ""); 512 setupoption("no_proxy", getenv(NO_PROXY), ""); 513 setupoption("pager", getenv("PAGER"), DEFAULTPAGER); 514 setupoption("prompt", getenv("FTPPROMPT"), DEFAULTPROMPT); 515 setupoption("rprompt", getenv("FTPRPROMPT"), DEFAULTRPROMPT); 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], *user, *host; 544 545 if ((rval = sigsetjmp(toplevel, 1))) 546 goto sigint_or_rval_exit; 547 (void)xsignal(SIGINT, intr); 548 (void)xsignal(SIGPIPE, lostpeer); 549 user = NULL; 550 host = argv[0]; 551 cp = strchr(host, '@'); 552 if (cp) { 553 *cp = '\0'; 554 user = host; 555 host = cp + 1; 556 } 557 /* XXX discards const */ 558 xargv[0] = (char *)getprogname(); 559 xargv[1] = host; 560 xargv[2] = argv[1]; 561 xargv[3] = NULL; 562 do { 563 int oautologin; 564 565 oautologin = autologin; 566 if (user != NULL) { 567 anonftp = 0; 568 autologin = 0; 569 } 570 setpeer(argc+1, xargv); 571 autologin = oautologin; 572 if (connected == 1 && user != NULL) 573 (void)ftp_login(host, user, NULL); 574 if (!retry_connect) 575 break; 576 if (!connected) { 577 macnum = 0; 578 fprintf(ttyout, 579 "Retrying in %d seconds...\n", 580 retry_connect); 581 sleep(retry_connect); 582 } 583 } while (!connected); 584 retry_connect = 0; /* connected, stop hiding msgs */ 585 } 586 } 587 if (isupload) 588 usage(); 589 590 #ifndef NO_EDITCOMPLETE 591 controlediting(); 592 #endif /* !NO_EDITCOMPLETE */ 593 594 (void)sigsetjmp(toplevel, 1); 595 (void)xsignal(SIGINT, intr); 596 (void)xsignal(SIGPIPE, lostpeer); 597 for (;;) 598 cmdscanner(); 599 } 600 601 /* 602 * Generate a prompt 603 */ 604 char * 605 prompt(void) 606 { 607 static char **prompt; 608 static char buf[MAXPATHLEN]; 609 610 if (prompt == NULL) { 611 struct option *o; 612 613 o = getoption("prompt"); 614 if (o == NULL) 615 errx(1, "prompt: no such option `prompt'"); 616 prompt = &(o->value); 617 } 618 formatbuf(buf, sizeof(buf), *prompt ? *prompt : DEFAULTPROMPT); 619 return (buf); 620 } 621 622 /* 623 * Generate an rprompt 624 */ 625 char * 626 rprompt(void) 627 { 628 static char **rprompt; 629 static char buf[MAXPATHLEN]; 630 631 if (rprompt == NULL) { 632 struct option *o; 633 634 o = getoption("rprompt"); 635 if (o == NULL) 636 errx(1, "rprompt: no such option `rprompt'"); 637 rprompt = &(o->value); 638 } 639 formatbuf(buf, sizeof(buf), *rprompt ? *rprompt : DEFAULTRPROMPT); 640 return (buf); 641 } 642 643 /* 644 * Command parser. 645 */ 646 void 647 cmdscanner(void) 648 { 649 struct cmd *c; 650 char *p; 651 #ifndef NO_EDITCOMPLETE 652 int ch; 653 #endif 654 size_t num; 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 num = getline(stdin, line, sizeof(line), NULL); 668 switch (num) { 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 el_parse(el, margc, (const char **)margv) != 0) 731 #endif /* !NO_EDITCOMPLETE */ 732 fputs("?Invalid command.\n", ttyout); 733 continue; 734 } 735 if (c->c_conn && !connected) { 736 fputs("Not connected.\n", ttyout); 737 continue; 738 } 739 confirmrest = 0; 740 margv[0] = c->c_name; 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 int got_one = 0; 835 char *sb = stringbase; 836 char *ap = argbase; 837 char *tmp = argbase; /* will return this if token found */ 838 839 if (*sb == '!' || *sb == '$') { /* recognize ! as a token for shell */ 840 switch (slrflag) { /* and $ as token for macro invoke */ 841 case 0: 842 slrflag++; 843 INC_CHKCURSOR(stringbase); 844 return ((*sb == '!') ? "!" : "$"); 845 /* NOTREACHED */ 846 case 1: 847 slrflag++; 848 altarg = stringbase; 849 break; 850 default: 851 break; 852 } 853 } 854 855 S0: 856 switch (*sb) { 857 858 case '\0': 859 goto OUT; 860 861 case ' ': 862 case '\t': 863 INC_CHKCURSOR(sb); 864 goto S0; 865 866 default: 867 switch (slrflag) { 868 case 0: 869 slrflag++; 870 break; 871 case 1: 872 slrflag++; 873 altarg = sb; 874 break; 875 default: 876 break; 877 } 878 goto S1; 879 } 880 881 S1: 882 switch (*sb) { 883 884 case ' ': 885 case '\t': 886 case '\0': 887 goto OUT; /* end of token */ 888 889 case '\\': 890 INC_CHKCURSOR(sb); 891 goto S2; /* slurp next character */ 892 893 case '"': 894 INC_CHKCURSOR(sb); 895 goto S3; /* slurp quoted string */ 896 897 default: 898 *ap = *sb; /* add character to token */ 899 ap++; 900 INC_CHKCURSOR(sb); 901 got_one = 1; 902 goto S1; 903 } 904 905 S2: 906 switch (*sb) { 907 908 case '\0': 909 goto OUT; 910 911 default: 912 *ap = *sb; 913 ap++; 914 INC_CHKCURSOR(sb); 915 got_one = 1; 916 goto S1; 917 } 918 919 S3: 920 switch (*sb) { 921 922 case '\0': 923 goto OUT; 924 925 case '"': 926 INC_CHKCURSOR(sb); 927 goto S1; 928 929 default: 930 *ap = *sb; 931 ap++; 932 INC_CHKCURSOR(sb); 933 got_one = 1; 934 goto S3; 935 } 936 937 OUT: 938 if (got_one) 939 *ap++ = '\0'; 940 argbase = ap; /* update storage pointer */ 941 stringbase = sb; /* update scan pointer */ 942 if (got_one) { 943 return (tmp); 944 } 945 switch (slrflag) { 946 case 0: 947 slrflag++; 948 break; 949 case 1: 950 slrflag++; 951 altarg = NULL; 952 break; 953 default: 954 break; 955 } 956 return (NULL); 957 } 958 959 /* 960 * Help/usage command. 961 * Call each command handler with argc == 0 and argv[0] == name. 962 */ 963 void 964 help(int argc, char *argv[]) 965 { 966 struct cmd *c; 967 char *nargv[1], *p, *cmd; 968 int isusage; 969 970 cmd = argv[0]; 971 isusage = (strcmp(cmd, "usage") == 0); 972 if (argc == 0 || (isusage && argc == 1)) { 973 UPRINTF("usage: %s [command [...]]\n", cmd); 974 return; 975 } 976 if (argc == 1) { 977 StringList *buf; 978 979 buf = ftp_sl_init(); 980 fprintf(ttyout, 981 "%sommands may be abbreviated. Commands are:\n\n", 982 proxy ? "Proxy c" : "C"); 983 for (c = cmdtab; (p = c->c_name) != NULL; c++) 984 if (!proxy || c->c_proxy) 985 ftp_sl_add(buf, p); 986 list_vertical(buf); 987 sl_free(buf, 0); 988 return; 989 } 990 991 #define HELPINDENT ((int) sizeof("disconnect")) 992 993 while (--argc > 0) { 994 char *arg; 995 996 arg = *++argv; 997 c = getcmd(arg); 998 if (c == (struct cmd *)-1) 999 fprintf(ttyout, "?Ambiguous %s command `%s'\n", 1000 cmd, arg); 1001 else if (c == NULL) 1002 fprintf(ttyout, "?Invalid %s command `%s'\n", 1003 cmd, arg); 1004 else { 1005 if (isusage) { 1006 nargv[0] = c->c_name; 1007 (*c->c_handler)(0, nargv); 1008 } else 1009 fprintf(ttyout, "%-*s\t%s\n", HELPINDENT, 1010 c->c_name, c->c_help); 1011 } 1012 } 1013 } 1014 1015 struct option * 1016 getoption(const char *name) 1017 { 1018 const char *p; 1019 struct option *c; 1020 1021 if (name == NULL) 1022 return (NULL); 1023 for (c = optiontab; (p = c->name) != NULL; c++) { 1024 if (strcasecmp(p, name) == 0) 1025 return (c); 1026 } 1027 return (NULL); 1028 } 1029 1030 char * 1031 getoptionvalue(const char *name) 1032 { 1033 struct option *c; 1034 1035 if (name == NULL) 1036 errx(1, "getoptionvalue: invoked with NULL name"); 1037 c = getoption(name); 1038 if (c != NULL) 1039 return (c->value); 1040 errx(1, "getoptionvalue: invoked with unknown option `%s'", name); 1041 /* NOTREACHED */ 1042 } 1043 1044 static void 1045 setupoption(char *name, char *value, char *defaultvalue) 1046 { 1047 char *nargv[3]; 1048 int overbose; 1049 1050 nargv[0] = "setupoption()"; 1051 nargv[1] = name; 1052 nargv[2] = (value ? value : defaultvalue); 1053 overbose = verbose; 1054 verbose = 0; 1055 setoption(3, nargv); 1056 verbose = overbose; 1057 } 1058 1059 void 1060 usage(void) 1061 { 1062 const char *progname = getprogname(); 1063 1064 (void)fprintf(stderr, 1065 "usage: %s [-46AadefginpRtvV] [-N netrc] [-o outfile] [-P port] [-q quittime]\n" 1066 " [-r retry] [-s srcaddr] [-T dir,max[,inc]]\n" 1067 " [[user@]host [port]] [host:path[/]] [file:///file]\n" 1068 " [ftp://[user[:pass]@]host[:port]/path[/]]\n" 1069 " [http://[user[:pass]@]host[:port]/path] [...]\n" 1070 " %s -u URL file [...]\n", progname, progname); 1071 exit(1); 1072 } 1073
Indexes created Fri Sep 26 08:10:20 GMT 2025