main.c revision 1.47
1 /* $NetBSD: main.c,v 1.47 1999/07/11 20:37:39 itojun Exp $ */ 2 3 /* 4 * Copyright (C) 1997 and 1998 WIDE Project. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the project nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * 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. All advertising materials mentioning features or use of this software 45 * must display the following acknowledgement: 46 * This product includes software developed by the University of 47 * California, Berkeley and its contributors. 48 * 4. Neither the name of the University nor the names of its contributors 49 * may be used to endorse or promote products derived from this software 50 * without specific prior written permission. 51 * 52 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 53 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 54 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 55 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 56 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 57 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 58 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 59 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 60 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 61 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 62 * SUCH DAMAGE. 63 */ 64 65 #include <sys/cdefs.h> 66 #ifndef lint 67 __COPYRIGHT("@(#) Copyright (c) 1985, 1989, 1993, 1994\n\ 68 The Regents of the University of California. All rights reserved.\n"); 69 #endif /* not lint */ 70 71 #ifndef lint 72 #if 0 73 static char sccsid[] = "@(#)main.c 8.6 (Berkeley) 10/9/94"; 74 #else 75 __RCSID("$NetBSD: main.c,v 1.47 1999/07/11 20:37:39 itojun Exp $"); 76 #endif 77 #endif /* not lint */ 78 79 /* 80 * FTP User Program -- Command Interface. 81 */ 82 #include <sys/types.h> 83 #include <sys/socket.h> 84 85 #include <err.h> 86 #include <netdb.h> 87 #include <pwd.h> 88 #include <signal.h> 89 #include <stdio.h> 90 #include <stdlib.h> 91 #include <string.h> 92 #include <unistd.h> 93 94 #include "ftp_var.h" 95 #include "pathnames.h" 96 97 #define FTP_PROXY "ftp_proxy" /* env var with FTP proxy location */ 98 #define HTTP_PROXY "http_proxy" /* env var with HTTP proxy location */ 99 #define NO_PROXY "no_proxy" /* env var with list of non-proxied 100 * hosts, comma or space separated */ 101 102 int main __P((int, char **)); 103 104 int 105 main(argc, argv) 106 int argc; 107 char *argv[]; 108 { 109 int ch, top, rval; 110 struct passwd *pw = NULL; 111 char *cp, *ep, homedir[MAXPATHLEN]; 112 int dumbterm; 113 114 ftpport = "ftp"; 115 httpport = "http"; 116 ftpproxy = getenv(FTP_PROXY); 117 httpproxy = getenv(HTTP_PROXY); 118 no_proxy = getenv(NO_PROXY); 119 gateport = NULL; 120 cp = getenv("FTPSERVERPORT"); 121 if (cp != NULL) 122 gateport = cp; 123 else 124 gateport = "ftpgate"; 125 doglob = 1; 126 interactive = 1; 127 autologin = 1; 128 passivemode = 1; 129 activefallback = 1; 130 preserve = 1; 131 verbose = 0; 132 progress = 0; 133 gatemode = 0; 134 outfile = NULL; 135 restartautofetch = 0; 136 #ifndef NO_EDITCOMPLETE 137 editing = 0; 138 el = NULL; 139 hist = NULL; 140 #endif 141 mark = HASHBYTES; 142 rate_get = 0; 143 rate_get_incr = DEFAULTINCR; 144 rate_put = 0; 145 rate_put_incr = DEFAULTINCR; 146 epsv4 = 1; 147 148 marg_sl = sl_init(); 149 if ((tmpdir = getenv("TMPDIR")) == NULL) 150 tmpdir = _PATH_TMP; 151 152 /* Set default operation mode based on FTPMODE environment variable */ 153 if ((cp = getenv("FTPMODE")) != NULL) { 154 if (strcmp(cp, "passive") == 0) { 155 passivemode = 1; 156 activefallback = 0; 157 } else if (strcmp(cp, "active") == 0) { 158 passivemode = 0; 159 activefallback = 0; 160 } else if (strcmp(cp, "gate") == 0) { 161 gatemode = 1; 162 } else if (strcmp(cp, "auto") == 0) { 163 passivemode = 1; 164 activefallback = 1; 165 } else 166 warnx("unknown $FTPMODE '%s'; using defaults", cp); 167 } 168 169 if (strcmp(__progname, "pftp") == 0) { 170 passivemode = 1; 171 activefallback = 0; 172 } else if (strcmp(__progname, "gate-ftp") == 0) 173 gatemode = 1; 174 175 gateserver = getenv("FTPSERVER"); 176 if (gateserver == NULL || *gateserver == '\0') 177 gateserver = GATE_SERVER; 178 if (gatemode) { 179 if (*gateserver == '\0') { 180 warnx( 181 "Neither $FTPSERVER nor GATE_SERVER is defined; disabling gate-ftp"); 182 gatemode = 0; 183 } 184 } 185 186 cp = getenv("TERM"); 187 if (cp == NULL || strcmp(cp, "dumb") == 0) 188 dumbterm = 1; 189 else 190 dumbterm = 0; 191 fromatty = isatty(fileno(stdin)); 192 ttyout = stdout; 193 if (isatty(fileno(ttyout))) { 194 verbose = 1; /* verbose if to a tty */ 195 if (! dumbterm) { 196 #ifndef NO_EDITCOMPLETE 197 if (fromatty) /* editing mode on if tty is usable */ 198 editing = 1; 199 #endif 200 #ifndef NO_PROGRESS 201 if (foregroundproc()) 202 progress = 1; /* progress bar on if fg */ 203 #endif 204 } 205 } 206 207 while ((ch = getopt(argc, argv, "Aadefgino:pP:r:RtT:vV")) != -1) { 208 switch (ch) { 209 case 'A': 210 activefallback = 0; 211 passivemode = 0; 212 break; 213 214 case 'a': 215 anonftp = 1; 216 break; 217 218 case 'd': 219 options |= SO_DEBUG; 220 debug++; 221 break; 222 223 case 'e': 224 #ifndef NO_EDITCOMPLETE 225 editing = 0; 226 #endif 227 break; 228 229 case 'f': 230 flushcache = 1; 231 break; 232 233 case 'g': 234 doglob = 0; 235 break; 236 237 case 'i': 238 interactive = 0; 239 break; 240 241 case 'n': 242 autologin = 0; 243 break; 244 245 case 'o': 246 outfile = optarg; 247 if (strcmp(outfile, "-") == 0) 248 ttyout = stderr; 249 break; 250 251 case 'p': 252 passivemode = 1; 253 activefallback = 0; 254 break; 255 256 case 'P': 257 ftpport = optarg; 258 break; 259 260 case 'r': 261 retry_connect = strtol(optarg, &ep, 10); 262 if (retry_connect < 1 || *ep != '\0') 263 errx(1, "bad retry value: %s", optarg); 264 break; 265 266 case 'R': 267 restartautofetch = 1; 268 break; 269 270 case 't': 271 trace = 1; 272 break; 273 274 case 'T': 275 { 276 int targc; 277 char *targv[6], *oac; 278 279 /* look for `dir,max[,incr]' */ 280 targc = 0; 281 targv[targc++] = "-T"; 282 oac = xstrdup(optarg); 283 284 while ((cp = strsep(&oac, ",")) != NULL) { 285 if (*cp == '\0') { 286 warnx("bad throttle value: %s", optarg); 287 usage(); 288 /* NOTREACHED */ 289 } 290 targv[targc++] = cp; 291 if (targc >= 5) 292 break; 293 } 294 if (parserate(targc, targv, 1) == -1) 295 usage(); 296 free(oac); 297 break; 298 } 299 300 case 'v': 301 progress = verbose = 1; 302 break; 303 304 case 'V': 305 progress = verbose = 0; 306 break; 307 308 default: 309 usage(); 310 } 311 } 312 /* set line buffering on ttyout */ 313 setvbuf(ttyout, NULL, _IOLBF, 0); 314 argc -= optind; 315 argv += optind; 316 317 cpend = 0; /* no pending replies */ 318 proxy = 0; /* proxy not active */ 319 crflag = 1; /* strip c.r. on ascii gets */ 320 sendport = -1; /* not using ports */ 321 /* 322 * Set up the home directory in case we're globbing. 323 */ 324 cp = getlogin(); 325 if (cp != NULL) { 326 pw = getpwnam(cp); 327 } 328 if (pw == NULL) 329 pw = getpwuid(getuid()); 330 if (pw != NULL) { 331 home = homedir; 332 (void)strcpy(home, pw->pw_dir); 333 } 334 335 setttywidth(0); 336 (void)xsignal(SIGWINCH, setttywidth); 337 (void)xsignal(SIGUSR1, crankrate); 338 (void)xsignal(SIGUSR2, crankrate); 339 340 #ifdef __GNUC__ /* to shut up gcc warnings */ 341 (void)&argc; 342 (void)&argv; 343 #endif 344 345 if (argc > 0) { 346 if (isurl(argv[0])) { 347 rval = auto_fetch(argc, argv); 348 if (rval >= 0) /* -1 == connected and cd-ed */ 349 exit(rval); 350 } else { 351 char *xargv[5]; 352 353 if (setjmp(toplevel)) 354 exit(0); 355 (void)signal(SIGINT, (sig_t)intr); 356 (void)signal(SIGPIPE, (sig_t)lostpeer); 357 xargv[0] = __progname; 358 xargv[1] = argv[0]; 359 xargv[2] = argv[1]; 360 xargv[3] = argv[2]; 361 xargv[4] = NULL; 362 do { 363 setpeer(argc+1, xargv); 364 if (!retry_connect) 365 break; 366 if (!connected) { 367 macnum = 0; 368 fprintf(ttyout, 369 "Retrying in %d seconds...\n", 370 retry_connect); 371 sleep(retry_connect); 372 } 373 } while (!connected); 374 retry_connect = 0; /* connected, stop hiding msgs */ 375 } 376 } 377 #ifndef NO_EDITCOMPLETE 378 controlediting(); 379 #endif /* !NO_EDITCOMPLETE */ 380 top = setjmp(toplevel) == 0; 381 if (top) { 382 (void)signal(SIGINT, (sig_t)intr); 383 (void)signal(SIGPIPE, (sig_t)lostpeer); 384 } 385 for (;;) { 386 cmdscanner(top); 387 top = 1; 388 } 389 } 390 391 void 392 intr() 393 { 394 395 alarmtimer(0); 396 longjmp(toplevel, 1); 397 } 398 399 void 400 lostpeer() 401 { 402 403 alarmtimer(0); 404 if (connected) { 405 if (cout != NULL) { 406 (void)shutdown(fileno(cout), 1+1); 407 (void)fclose(cout); 408 cout = NULL; 409 } 410 if (data >= 0) { 411 (void)shutdown(data, 1+1); 412 (void)close(data); 413 data = -1; 414 } 415 connected = 0; 416 } 417 pswitch(1); 418 if (connected) { 419 if (cout != NULL) { 420 (void)shutdown(fileno(cout), 1+1); 421 (void)fclose(cout); 422 cout = NULL; 423 } 424 connected = 0; 425 } 426 proxflag = 0; 427 pswitch(0); 428 } 429 430 /* 431 * Generate a prompt 432 */ 433 char * 434 prompt() 435 { 436 return ("ftp> "); 437 } 438 439 /* 440 * Command parser. 441 */ 442 void 443 cmdscanner(top) 444 int top; 445 { 446 struct cmd *c; 447 int num; 448 449 if (!top 450 #ifndef NO_EDITCOMPLETE 451 && !editing 452 #endif /* !NO_EDITCOMPLETE */ 453 ) 454 (void)putc('\n', ttyout); 455 for (;;) { 456 #ifndef NO_EDITCOMPLETE 457 if (!editing) { 458 #endif /* !NO_EDITCOMPLETE */ 459 if (fromatty) { 460 fputs(prompt(), ttyout); 461 (void)fflush(ttyout); 462 } 463 if (fgets(line, sizeof(line), stdin) == NULL) 464 quit(0, 0); 465 num = strlen(line); 466 if (num == 0) 467 break; 468 if (line[--num] == '\n') { 469 if (num == 0) 470 break; 471 line[num] = '\0'; 472 } else if (num == sizeof(line) - 2) { 473 fputs("sorry, input line too long.\n", ttyout); 474 while ((num = getchar()) != '\n' && num != EOF) 475 /* void */; 476 break; 477 } /* else it was a line without a newline */ 478 #ifndef NO_EDITCOMPLETE 479 } else { 480 const char *buf; 481 HistEvent ev; 482 cursor_pos = NULL; 483 484 if ((buf = el_gets(el, &num)) == NULL || num == 0) 485 quit(0, 0); 486 if (buf[--num] == '\n') { 487 if (num == 0) 488 break; 489 } else if (num >= sizeof(line)) { 490 fputs("sorry, input line too long.\n", ttyout); 491 break; 492 } 493 memcpy(line, buf, num); 494 line[num] = '\0'; 495 history(hist, &ev, H_ENTER, buf); 496 } 497 #endif /* !NO_EDITCOMPLETE */ 498 499 makeargv(); 500 if (margc == 0) 501 continue; 502 c = getcmd(margv[0]); 503 if (c == (struct cmd *)-1) { 504 fputs("?Ambiguous command.\n", ttyout); 505 continue; 506 } 507 if (c == NULL) { 508 #if !defined(NO_EDITCOMPLETE) 509 /* 510 * attempt to el_parse() unknown commands. 511 * any command containing a ':' would be parsed 512 * as "[prog:]cmd ...", and will result in a 513 * false positive if prog != "ftp", so treat 514 * such commands as invalid. 515 */ 516 if (strchr(margv[0], ':') != NULL || 517 el_parse(el, margc, margv) != 0) 518 #endif /* !NO_EDITCOMPLETE */ 519 fputs("?Invalid command.\n", ttyout); 520 continue; 521 } 522 if (c->c_conn && !connected) { 523 fputs("Not connected.\n", ttyout); 524 continue; 525 } 526 confirmrest = 0; 527 (*c->c_handler)(margc, margv); 528 if (bell && c->c_bell) 529 (void)putc('\007', ttyout); 530 if (c->c_handler != help) 531 break; 532 } 533 (void)signal(SIGINT, (sig_t)intr); 534 (void)signal(SIGPIPE, (sig_t)lostpeer); 535 } 536 537 struct cmd * 538 getcmd(name) 539 const char *name; 540 { 541 const char *p, *q; 542 struct cmd *c, *found; 543 int nmatches, longest; 544 545 if (name == NULL) 546 return (0); 547 548 longest = 0; 549 nmatches = 0; 550 found = 0; 551 for (c = cmdtab; (p = c->c_name) != NULL; c++) { 552 for (q = name; *q == *p++; q++) 553 if (*q == 0) /* exact match? */ 554 return (c); 555 if (!*q) { /* the name was a prefix */ 556 if (q - name > longest) { 557 longest = q - name; 558 nmatches = 1; 559 found = c; 560 } else if (q - name == longest) 561 nmatches++; 562 } 563 } 564 if (nmatches > 1) 565 return ((struct cmd *)-1); 566 return (found); 567 } 568 569 /* 570 * Slice a string up into argc/argv. 571 */ 572 573 int slrflag; 574 575 void 576 makeargv() 577 { 578 char *argp; 579 580 stringbase = line; /* scan from first of buffer */ 581 argbase = argbuf; /* store from first of buffer */ 582 slrflag = 0; 583 marg_sl->sl_cur = 0; /* reset to start of marg_sl */ 584 for (margc = 0; ; margc++) { 585 argp = slurpstring(); 586 sl_add(marg_sl, argp); 587 if (argp == NULL) 588 break; 589 } 590 #ifndef NO_EDITCOMPLETE 591 if (cursor_pos == line) { 592 cursor_argc = 0; 593 cursor_argo = 0; 594 } else if (cursor_pos != NULL) { 595 cursor_argc = margc; 596 cursor_argo = strlen(margv[margc-1]); 597 } 598 #endif /* !NO_EDITCOMPLETE */ 599 } 600 601 #ifdef NO_EDITCOMPLETE 602 #define INC_CHKCURSOR(x) (x)++ 603 #else /* !NO_EDITCOMPLETE */ 604 #define INC_CHKCURSOR(x) { (x)++ ; \ 605 if (x == cursor_pos) { \ 606 cursor_argc = margc; \ 607 cursor_argo = ap-argbase; \ 608 cursor_pos = NULL; \ 609 } } 610 611 #endif /* !NO_EDITCOMPLETE */ 612 613 /* 614 * Parse string into argbuf; 615 * implemented with FSM to 616 * handle quoting and strings 617 */ 618 char * 619 slurpstring() 620 { 621 int got_one = 0; 622 char *sb = stringbase; 623 char *ap = argbase; 624 char *tmp = argbase; /* will return this if token found */ 625 626 if (*sb == '!' || *sb == '$') { /* recognize ! as a token for shell */ 627 switch (slrflag) { /* and $ as token for macro invoke */ 628 case 0: 629 slrflag++; 630 INC_CHKCURSOR(stringbase); 631 return ((*sb == '!') ? "!" : "$"); 632 /* NOTREACHED */ 633 case 1: 634 slrflag++; 635 altarg = stringbase; 636 break; 637 default: 638 break; 639 } 640 } 641 642 S0: 643 switch (*sb) { 644 645 case '\0': 646 goto OUT; 647 648 case ' ': 649 case '\t': 650 INC_CHKCURSOR(sb); 651 goto S0; 652 653 default: 654 switch (slrflag) { 655 case 0: 656 slrflag++; 657 break; 658 case 1: 659 slrflag++; 660 altarg = sb; 661 break; 662 default: 663 break; 664 } 665 goto S1; 666 } 667 668 S1: 669 switch (*sb) { 670 671 case ' ': 672 case '\t': 673 case '\0': 674 goto OUT; /* end of token */ 675 676 case '\\': 677 INC_CHKCURSOR(sb); 678 goto S2; /* slurp next character */ 679 680 case '"': 681 INC_CHKCURSOR(sb); 682 goto S3; /* slurp quoted string */ 683 684 default: 685 *ap = *sb; /* add character to token */ 686 ap++; 687 INC_CHKCURSOR(sb); 688 got_one = 1; 689 goto S1; 690 } 691 692 S2: 693 switch (*sb) { 694 695 case '\0': 696 goto OUT; 697 698 default: 699 *ap = *sb; 700 ap++; 701 INC_CHKCURSOR(sb); 702 got_one = 1; 703 goto S1; 704 } 705 706 S3: 707 switch (*sb) { 708 709 case '\0': 710 goto OUT; 711 712 case '"': 713 INC_CHKCURSOR(sb); 714 goto S1; 715 716 default: 717 *ap = *sb; 718 ap++; 719 INC_CHKCURSOR(sb); 720 got_one = 1; 721 goto S3; 722 } 723 724 OUT: 725 if (got_one) 726 *ap++ = '\0'; 727 argbase = ap; /* update storage pointer */ 728 stringbase = sb; /* update scan pointer */ 729 if (got_one) { 730 return (tmp); 731 } 732 switch (slrflag) { 733 case 0: 734 slrflag++; 735 break; 736 case 1: 737 slrflag++; 738 altarg = NULL; 739 break; 740 default: 741 break; 742 } 743 return (NULL); 744 } 745 746 /* 747 * Help command. 748 * Call each command handler with argc == 0 and argv[0] == name. 749 */ 750 void 751 help(argc, argv) 752 int argc; 753 char *argv[]; 754 { 755 struct cmd *c; 756 757 if (argc == 1) { 758 StringList *buf; 759 760 buf = sl_init(); 761 fprintf(ttyout, 762 "%sommands may be abbreviated. Commands are:\n\n", 763 proxy ? "Proxy c" : "C"); 764 for (c = cmdtab; c < &cmdtab[NCMDS]; c++) 765 if (c->c_name && (!proxy || c->c_proxy)) 766 sl_add(buf, c->c_name); 767 list_vertical(buf); 768 sl_free(buf, 0); 769 return; 770 } 771 772 #define HELPINDENT ((int) sizeof("disconnect")) 773 774 while (--argc > 0) { 775 char *arg; 776 777 arg = *++argv; 778 c = getcmd(arg); 779 if (c == (struct cmd *)-1) 780 fprintf(ttyout, "?Ambiguous help command %s\n", arg); 781 else if (c == NULL) 782 fprintf(ttyout, "?Invalid help command %s\n", arg); 783 else 784 fprintf(ttyout, "%-*s\t%s\n", HELPINDENT, 785 c->c_name, c->c_help); 786 } 787 } 788 789 void 790 usage() 791 { 792 (void)fprintf(stderr, 793 "usage: %s [-AadefginpRtvV] [-r retry] [-o outfile] [-P port] [-T dir,max[,inc]\n" 794 " [host [port]] [file:///file] [ftp://[user[:pass]@]host[:port]/path[/]]\n" 795 " [http://[user[:pass]@]host[:port]/path] [host:path[/]]\n", __progname); 796 exit(1); 797 } 798
Indexes created Thu Sep 25 08:09:54 GMT 2025