main.c revision 1.86
1 /* $NetBSD: main.c,v 1.86 2003/08/07 11:13:56 agc Exp $ */ 2 3 /*- 4 * Copyright (c) 1996-2002 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 1.86 2003/08/07 11:13:56 agc 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 <stdio.h> 123 #include <stdlib.h> 124 #include <string.h> 125 #include <unistd.h> 126 #include <locale.h> 127 128 #define GLOBAL /* force GLOBAL decls in ftp_var.h to be declared */ 129 #include "ftp_var.h" 130 131 #define FTP_PROXY "ftp_proxy" /* env var with FTP proxy location */ 132 #define HTTP_PROXY "http_proxy" /* env var with HTTP proxy location */ 133 #define NO_PROXY "no_proxy" /* env var with list of non-proxied 134 * hosts, comma or space separated */ 135 136 static void setupoption(char *, char *, char *); 137 int main(int, char *[]); 138 139 int 140 main(int argc, char *argv[]) 141 { 142 int ch, rval; 143 struct passwd *pw; 144 char *cp, *ep, *anonuser, *anonpass, *upload_path; 145 int dumbterm, s, len, isupload; 146 147 setlocale(LC_ALL, ""); 148 setprogname(argv[0]); 149 150 ftpport = "ftp"; 151 httpport = "http"; 152 gateport = NULL; 153 cp = getenv("FTPSERVERPORT"); 154 if (cp != NULL) 155 gateport = cp; 156 else 157 gateport = "ftpgate"; 158 doglob = 1; 159 interactive = 1; 160 autologin = 1; 161 passivemode = 1; 162 activefallback = 1; 163 preserve = 1; 164 verbose = 0; 165 progress = 0; 166 gatemode = 0; 167 data = -1; 168 outfile = NULL; 169 restartautofetch = 0; 170 #ifndef NO_EDITCOMPLETE 171 editing = 0; 172 el = NULL; 173 hist = NULL; 174 #endif 175 bytes = 0; 176 mark = HASHBYTES; 177 rate_get = 0; 178 rate_get_incr = DEFAULTINCR; 179 rate_put = 0; 180 rate_put_incr = DEFAULTINCR; 181 #ifdef INET6 182 epsv4 = 1; 183 #else 184 epsv4 = 0; 185 #endif 186 epsv4bad = 0; 187 upload_path = NULL; 188 isupload = 0; 189 reply_callback = NULL; 190 family = AF_UNSPEC; 191 192 netrc[0] = '\0'; 193 cp = getenv("NETRC"); 194 if (cp != NULL && strlcpy(netrc, cp, sizeof(netrc)) >= sizeof(netrc)) 195 errx(1, "$NETRC `%s': %s", cp, strerror(ENAMETOOLONG)); 196 197 /* 198 * Get the default socket buffer sizes if we don't already have them. 199 * It doesn't matter which socket we do this to, because on the first 200 * call no socket buffer sizes will have been modified, so we are 201 * guaranteed to get the system defaults. 202 */ 203 s = socket(AF_INET, SOCK_STREAM, 0); 204 if (s == -1) 205 err(1, "can't create socket"); 206 len = sizeof(rcvbuf_size); 207 if (getsockopt(s, SOL_SOCKET, SO_RCVBUF, (void *) &rcvbuf_size, &len) 208 < 0) 209 err(1, "unable to get default rcvbuf size"); 210 len = sizeof(sndbuf_size); 211 if (getsockopt(s, SOL_SOCKET, SO_SNDBUF, (void *) &sndbuf_size, &len) 212 < 0) 213 err(1, "unable to get default sndbuf size"); 214 (void)close(s); 215 /* sanity check returned buffer sizes */ 216 if (rcvbuf_size <= 0) 217 rcvbuf_size = 8192; 218 if (sndbuf_size <= 0) 219 sndbuf_size = 8192; 220 221 marg_sl = xsl_init(); 222 if ((tmpdir = getenv("TMPDIR")) == NULL) 223 tmpdir = _PATH_TMP; 224 225 /* Set default operation mode based on FTPMODE environment variable */ 226 if ((cp = getenv("FTPMODE")) != NULL) { 227 if (strcasecmp(cp, "passive") == 0) { 228 passivemode = 1; 229 activefallback = 0; 230 } else if (strcasecmp(cp, "active") == 0) { 231 passivemode = 0; 232 activefallback = 0; 233 } else if (strcasecmp(cp, "gate") == 0) { 234 gatemode = 1; 235 } else if (strcasecmp(cp, "auto") == 0) { 236 passivemode = 1; 237 activefallback = 1; 238 } else 239 warnx("unknown $FTPMODE '%s'; using defaults", cp); 240 } 241 242 if (strcmp(getprogname(), "pftp") == 0) { 243 passivemode = 1; 244 activefallback = 0; 245 } else if (strcmp(getprogname(), "gate-ftp") == 0) 246 gatemode = 1; 247 248 gateserver = getenv("FTPSERVER"); 249 if (gateserver == NULL || *gateserver == '\0') 250 gateserver = GATE_SERVER; 251 if (gatemode) { 252 if (*gateserver == '\0') { 253 warnx( 254 "Neither $FTPSERVER nor GATE_SERVER is defined; disabling gate-ftp"); 255 gatemode = 0; 256 } 257 } 258 259 cp = getenv("TERM"); 260 if (cp == NULL || strcmp(cp, "dumb") == 0) 261 dumbterm = 1; 262 else 263 dumbterm = 0; 264 fromatty = isatty(fileno(stdin)); 265 ttyout = stdout; 266 if (isatty(fileno(ttyout))) { 267 verbose = 1; /* verbose if to a tty */ 268 if (! dumbterm) { 269 #ifndef NO_EDITCOMPLETE 270 if (fromatty) /* editing mode on if tty is usable */ 271 editing = 1; 272 #endif 273 #ifndef NO_PROGRESS 274 if (foregroundproc()) 275 progress = 1; /* progress bar on if fg */ 276 #endif 277 } 278 } 279 280 while ((ch = getopt(argc, argv, "46AadefginN:o:pP:q:r:RtT:u:vV")) != -1) { 281 switch (ch) { 282 case '4': 283 family = AF_INET; 284 break; 285 286 case '6': 287 #ifdef INET6 288 family = AF_INET6; 289 #else 290 warnx("INET6 support is not available; ignoring -6"); 291 #endif 292 break; 293 294 case 'A': 295 activefallback = 0; 296 passivemode = 0; 297 break; 298 299 case 'a': 300 anonftp = 1; 301 break; 302 303 case 'd': 304 options |= SO_DEBUG; 305 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 'i': 323 interactive = 0; 324 break; 325 326 case 'n': 327 autologin = 0; 328 break; 329 330 case 'N': 331 if (strlcpy(netrc, optarg, sizeof(netrc)) 332 >= sizeof(netrc)) 333 errx(1, "%s: %s", optarg, 334 strerror(ENAMETOOLONG)); 335 break; 336 337 case 'o': 338 outfile = optarg; 339 if (strcmp(outfile, "-") == 0) 340 ttyout = stderr; 341 break; 342 343 case 'p': 344 passivemode = 1; 345 activefallback = 0; 346 break; 347 348 case 'P': 349 ftpport = optarg; 350 break; 351 352 case 'q': 353 quit_time = strtol(optarg, &ep, 10); 354 if (quit_time < 1 || *ep != '\0') 355 errx(1, "bad quit value: %s", optarg); 356 break; 357 358 case 'r': 359 retry_connect = strtol(optarg, &ep, 10); 360 if (retry_connect < 1 || *ep != '\0') 361 errx(1, "bad retry value: %s", optarg); 362 break; 363 364 case 'R': 365 restartautofetch = 1; 366 break; 367 368 case 't': 369 trace = 1; 370 break; 371 372 case 'T': 373 { 374 int targc; 375 char *targv[6], *oac; 376 377 /* look for `dir,max[,incr]' */ 378 targc = 0; 379 targv[targc++] = "-T"; 380 oac = xstrdup(optarg); 381 382 while ((cp = strsep(&oac, ",")) != NULL) { 383 if (*cp == '\0') { 384 warnx("bad throttle value: %s", optarg); 385 usage(); 386 /* NOTREACHED */ 387 } 388 targv[targc++] = cp; 389 if (targc >= 5) 390 break; 391 } 392 if (parserate(targc, targv, 1) == -1) 393 usage(); 394 free(oac); 395 break; 396 } 397 398 case 'u': 399 { 400 isupload = 1; 401 interactive = 0; 402 upload_path = xstrdup(optarg); 403 404 break; 405 } 406 407 case 'v': 408 progress = verbose = 1; 409 break; 410 411 case 'V': 412 progress = verbose = 0; 413 break; 414 415 default: 416 usage(); 417 } 418 } 419 /* set line buffering on ttyout */ 420 setvbuf(ttyout, NULL, _IOLBF, 0); 421 argc -= optind; 422 argv += optind; 423 424 cpend = 0; /* no pending replies */ 425 proxy = 0; /* proxy not active */ 426 crflag = 1; /* strip c.r. on ascii gets */ 427 sendport = -1; /* not using ports */ 428 429 /* 430 * Cache the user name and home directory. 431 */ 432 localhome = NULL; 433 localname = NULL; 434 anonuser = "anonymous"; 435 cp = getenv("HOME"); 436 if (! EMPTYSTRING(cp)) 437 localhome = xstrdup(cp); 438 pw = NULL; 439 cp = getlogin(); 440 if (cp != NULL) 441 pw = getpwnam(cp); 442 if (pw == NULL) 443 pw = getpwuid(getuid()); 444 if (pw != NULL) { 445 if (localhome == NULL && !EMPTYSTRING(pw->pw_dir)) 446 localhome = xstrdup(pw->pw_dir); 447 localname = xstrdup(pw->pw_name); 448 anonuser = localname; 449 } 450 if (netrc[0] == '\0' && localhome != NULL) { 451 if (strlcpy(netrc, localhome, sizeof(netrc)) >= sizeof(netrc) || 452 strlcat(netrc, "/.netrc", sizeof(netrc)) >= sizeof(netrc)) { 453 warnx("%s/.netrc: %s", localhome, 454 strerror(ENAMETOOLONG)); 455 netrc[0] = '\0'; 456 } 457 } 458 if (localhome == NULL) 459 localhome = xstrdup("/"); 460 461 /* 462 * Every anonymous FTP server I've encountered will accept the 463 * string "username@", and will append the hostname itself. We 464 * do this by default since many servers are picky about not 465 * having a FQDN in the anonymous password. 466 * - thorpej (at) NetBSD.org 467 */ 468 len = strlen(anonuser) + 2; 469 anonpass = xmalloc(len); 470 (void)strlcpy(anonpass, anonuser, len); 471 (void)strlcat(anonpass, "@", len); 472 473 /* 474 * set all the defaults for options defined in 475 * struct option optiontab[] declared in cmdtab.c 476 */ 477 setupoption("anonpass", getenv("FTPANONPASS"), anonpass); 478 setupoption("ftp_proxy", getenv(FTP_PROXY), ""); 479 setupoption("http_proxy", getenv(HTTP_PROXY), ""); 480 setupoption("no_proxy", getenv(NO_PROXY), ""); 481 setupoption("pager", getenv("PAGER"), DEFAULTPAGER); 482 setupoption("prompt", getenv("FTPPROMPT"), DEFAULTPROMPT); 483 setupoption("rprompt", getenv("FTPRPROMPT"), DEFAULTRPROMPT); 484 485 free(anonpass); 486 487 setttywidth(0); 488 #ifdef SIGINFO 489 (void)xsignal(SIGINFO, psummary); 490 #endif 491 (void)xsignal(SIGQUIT, psummary); 492 (void)xsignal(SIGUSR1, crankrate); 493 (void)xsignal(SIGUSR2, crankrate); 494 (void)xsignal(SIGWINCH, setttywidth); 495 496 #ifdef __GNUC__ /* to shut up gcc warnings */ 497 (void)&argc; 498 (void)&argv; 499 #endif 500 501 if (argc > 0) { 502 if (isupload) { 503 rval = auto_put(argc, argv, upload_path); 504 exit(rval); 505 } else if (strchr(argv[0], ':') != NULL 506 && ! isipv6addr(argv[0])) { 507 rval = auto_fetch(argc, argv); 508 if (rval >= 0) /* -1 == connected and cd-ed */ 509 exit(rval); 510 } else { 511 char *xargv[4], *user, *host; 512 513 if (sigsetjmp(toplevel, 1)) 514 exit(0); 515 (void)xsignal(SIGINT, intr); 516 (void)xsignal(SIGPIPE, lostpeer); 517 user = NULL; 518 host = argv[0]; 519 cp = strchr(host, '@'); 520 if (cp) { 521 *cp = '\0'; 522 user = host; 523 host = cp + 1; 524 } 525 /* XXX discards const */ 526 xargv[0] = (char *)getprogname(); 527 xargv[1] = host; 528 xargv[2] = argv[1]; 529 xargv[3] = NULL; 530 do { 531 int oautologin; 532 533 oautologin = autologin; 534 if (user != NULL) { 535 anonftp = 0; 536 autologin = 0; 537 } 538 setpeer(argc+1, xargv); 539 autologin = oautologin; 540 if (connected == 1 && user != NULL) 541 (void)ftp_login(host, user, NULL); 542 if (!retry_connect) 543 break; 544 if (!connected) { 545 macnum = 0; 546 fprintf(ttyout, 547 "Retrying in %d seconds...\n", 548 retry_connect); 549 sleep(retry_connect); 550 } 551 } while (!connected); 552 retry_connect = 0; /* connected, stop hiding msgs */ 553 } 554 } 555 if (isupload) 556 usage(); 557 558 #ifndef NO_EDITCOMPLETE 559 controlediting(); 560 #endif /* !NO_EDITCOMPLETE */ 561 562 (void)sigsetjmp(toplevel, 1); 563 (void)xsignal(SIGINT, intr); 564 (void)xsignal(SIGPIPE, lostpeer); 565 for (;;) 566 cmdscanner(); 567 } 568 569 /* 570 * Generate a prompt 571 */ 572 char * 573 prompt(void) 574 { 575 static char **prompt; 576 static char buf[MAXPATHLEN]; 577 578 if (prompt == NULL) { 579 struct option *o; 580 581 o = getoption("prompt"); 582 if (o == NULL) 583 errx(1, "no such option `prompt'"); 584 prompt = &(o->value); 585 } 586 formatbuf(buf, sizeof(buf), *prompt ? *prompt : DEFAULTPROMPT); 587 return (buf); 588 } 589 590 /* 591 * Generate an rprompt 592 */ 593 char * 594 rprompt(void) 595 { 596 static char **rprompt; 597 static char buf[MAXPATHLEN]; 598 599 if (rprompt == NULL) { 600 struct option *o; 601 602 o = getoption("rprompt"); 603 if (o == NULL) 604 errx(1, "no such option `rprompt'"); 605 rprompt = &(o->value); 606 } 607 formatbuf(buf, sizeof(buf), *rprompt ? *rprompt : DEFAULTRPROMPT); 608 return (buf); 609 } 610 611 /* 612 * Command parser. 613 */ 614 void 615 cmdscanner(void) 616 { 617 struct cmd *c; 618 char *p; 619 int num; 620 621 for (;;) { 622 #ifndef NO_EDITCOMPLETE 623 if (!editing) { 624 #endif /* !NO_EDITCOMPLETE */ 625 if (fromatty) { 626 fputs(prompt(), ttyout); 627 p = rprompt(); 628 if (*p) 629 fprintf(ttyout, "%s ", p); 630 (void)fflush(ttyout); 631 } 632 if (fgets(line, sizeof(line), stdin) == NULL) { 633 if (fromatty) 634 putc('\n', ttyout); 635 quit(0, NULL); 636 } 637 num = strlen(line); 638 if (num == 0) 639 break; 640 if (line[--num] == '\n') { 641 if (num == 0) 642 break; 643 line[num] = '\0'; 644 } else if (num == sizeof(line) - 2) { 645 fputs("sorry, input line too long.\n", ttyout); 646 while ((num = getchar()) != '\n' && num != EOF) 647 /* void */; 648 break; 649 } /* else it was a line without a newline */ 650 #ifndef NO_EDITCOMPLETE 651 } else { 652 const char *buf; 653 HistEvent ev; 654 cursor_pos = NULL; 655 656 if ((buf = el_gets(el, &num)) == NULL || num == 0) { 657 if (fromatty) 658 putc('\n', ttyout); 659 quit(0, NULL); 660 } 661 if (buf[--num] == '\n') { 662 if (num == 0) 663 break; 664 } else if (num >= sizeof(line)) { 665 fputs("sorry, input line too long.\n", ttyout); 666 break; 667 } 668 memcpy(line, buf, num); 669 line[num] = '\0'; 670 history(hist, &ev, H_ENTER, buf); 671 } 672 #endif /* !NO_EDITCOMPLETE */ 673 674 makeargv(); 675 if (margc == 0) 676 continue; 677 c = getcmd(margv[0]); 678 if (c == (struct cmd *)-1) { 679 fputs("?Ambiguous command.\n", ttyout); 680 continue; 681 } 682 if (c == NULL) { 683 #if !defined(NO_EDITCOMPLETE) 684 /* 685 * attempt to el_parse() unknown commands. 686 * any command containing a ':' would be parsed 687 * as "[prog:]cmd ...", and will result in a 688 * false positive if prog != "ftp", so treat 689 * such commands as invalid. 690 */ 691 if (strchr(margv[0], ':') != NULL || 692 el_parse(el, margc, (const char **)margv) != 0) 693 #endif /* !NO_EDITCOMPLETE */ 694 fputs("?Invalid command.\n", ttyout); 695 continue; 696 } 697 if (c->c_conn && !connected) { 698 fputs("Not connected.\n", ttyout); 699 continue; 700 } 701 confirmrest = 0; 702 margv[0] = c->c_name; 703 (*c->c_handler)(margc, margv); 704 if (bell && c->c_bell) 705 (void)putc('\007', ttyout); 706 if (c->c_handler != help) 707 break; 708 } 709 (void)xsignal(SIGINT, intr); 710 (void)xsignal(SIGPIPE, lostpeer); 711 } 712 713 struct cmd * 714 getcmd(const char *name) 715 { 716 const char *p, *q; 717 struct cmd *c, *found; 718 int nmatches, longest; 719 720 if (name == NULL) 721 return (0); 722 723 longest = 0; 724 nmatches = 0; 725 found = 0; 726 for (c = cmdtab; (p = c->c_name) != NULL; c++) { 727 for (q = name; *q == *p++; q++) 728 if (*q == 0) /* exact match? */ 729 return (c); 730 if (!*q) { /* the name was a prefix */ 731 if (q - name > longest) { 732 longest = q - name; 733 nmatches = 1; 734 found = c; 735 } else if (q - name == longest) 736 nmatches++; 737 } 738 } 739 if (nmatches > 1) 740 return ((struct cmd *)-1); 741 return (found); 742 } 743 744 /* 745 * Slice a string up into argc/argv. 746 */ 747 748 int slrflag; 749 750 void 751 makeargv(void) 752 { 753 char *argp; 754 755 stringbase = line; /* scan from first of buffer */ 756 argbase = argbuf; /* store from first of buffer */ 757 slrflag = 0; 758 marg_sl->sl_cur = 0; /* reset to start of marg_sl */ 759 for (margc = 0; ; margc++) { 760 argp = slurpstring(); 761 xsl_add(marg_sl, argp); 762 if (argp == NULL) 763 break; 764 } 765 #ifndef NO_EDITCOMPLETE 766 if (cursor_pos == line) { 767 cursor_argc = 0; 768 cursor_argo = 0; 769 } else if (cursor_pos != NULL) { 770 cursor_argc = margc; 771 cursor_argo = strlen(margv[margc-1]); 772 } 773 #endif /* !NO_EDITCOMPLETE */ 774 } 775 776 #ifdef NO_EDITCOMPLETE 777 #define INC_CHKCURSOR(x) (x)++ 778 #else /* !NO_EDITCOMPLETE */ 779 #define INC_CHKCURSOR(x) { (x)++ ; \ 780 if (x == cursor_pos) { \ 781 cursor_argc = margc; \ 782 cursor_argo = ap-argbase; \ 783 cursor_pos = NULL; \ 784 } } 785 786 #endif /* !NO_EDITCOMPLETE */ 787 788 /* 789 * Parse string into argbuf; 790 * implemented with FSM to 791 * handle quoting and strings 792 */ 793 char * 794 slurpstring(void) 795 { 796 int got_one = 0; 797 char *sb = stringbase; 798 char *ap = argbase; 799 char *tmp = argbase; /* will return this if token found */ 800 801 if (*sb == '!' || *sb == '$') { /* recognize ! as a token for shell */ 802 switch (slrflag) { /* and $ as token for macro invoke */ 803 case 0: 804 slrflag++; 805 INC_CHKCURSOR(stringbase); 806 return ((*sb == '!') ? "!" : "$"); 807 /* NOTREACHED */ 808 case 1: 809 slrflag++; 810 altarg = stringbase; 811 break; 812 default: 813 break; 814 } 815 } 816 817 S0: 818 switch (*sb) { 819 820 case '\0': 821 goto OUT; 822 823 case ' ': 824 case '\t': 825 INC_CHKCURSOR(sb); 826 goto S0; 827 828 default: 829 switch (slrflag) { 830 case 0: 831 slrflag++; 832 break; 833 case 1: 834 slrflag++; 835 altarg = sb; 836 break; 837 default: 838 break; 839 } 840 goto S1; 841 } 842 843 S1: 844 switch (*sb) { 845 846 case ' ': 847 case '\t': 848 case '\0': 849 goto OUT; /* end of token */ 850 851 case '\\': 852 INC_CHKCURSOR(sb); 853 goto S2; /* slurp next character */ 854 855 case '"': 856 INC_CHKCURSOR(sb); 857 goto S3; /* slurp quoted string */ 858 859 default: 860 *ap = *sb; /* add character to token */ 861 ap++; 862 INC_CHKCURSOR(sb); 863 got_one = 1; 864 goto S1; 865 } 866 867 S2: 868 switch (*sb) { 869 870 case '\0': 871 goto OUT; 872 873 default: 874 *ap = *sb; 875 ap++; 876 INC_CHKCURSOR(sb); 877 got_one = 1; 878 goto S1; 879 } 880 881 S3: 882 switch (*sb) { 883 884 case '\0': 885 goto OUT; 886 887 case '"': 888 INC_CHKCURSOR(sb); 889 goto S1; 890 891 default: 892 *ap = *sb; 893 ap++; 894 INC_CHKCURSOR(sb); 895 got_one = 1; 896 goto S3; 897 } 898 899 OUT: 900 if (got_one) 901 *ap++ = '\0'; 902 argbase = ap; /* update storage pointer */ 903 stringbase = sb; /* update scan pointer */ 904 if (got_one) { 905 return (tmp); 906 } 907 switch (slrflag) { 908 case 0: 909 slrflag++; 910 break; 911 case 1: 912 slrflag++; 913 altarg = NULL; 914 break; 915 default: 916 break; 917 } 918 return (NULL); 919 } 920 921 /* 922 * Help/usage command. 923 * Call each command handler with argc == 0 and argv[0] == name. 924 */ 925 void 926 help(int argc, char *argv[]) 927 { 928 struct cmd *c; 929 char *nargv[1], *p, *cmd; 930 int isusage; 931 932 cmd = argv[0]; 933 isusage = (strcmp(cmd, "usage") == 0); 934 if (argc == 0 || (isusage && argc == 1)) { 935 fprintf(ttyout, "usage: %s [command [...]]\n", cmd); 936 return; 937 } 938 if (argc == 1) { 939 StringList *buf; 940 941 buf = xsl_init(); 942 fprintf(ttyout, 943 "%sommands may be abbreviated. Commands are:\n\n", 944 proxy ? "Proxy c" : "C"); 945 for (c = cmdtab; (p = c->c_name) != NULL; c++) 946 if (!proxy || c->c_proxy) 947 xsl_add(buf, p); 948 list_vertical(buf); 949 sl_free(buf, 0); 950 return; 951 } 952 953 #define HELPINDENT ((int) sizeof("disconnect")) 954 955 while (--argc > 0) { 956 char *arg; 957 958 arg = *++argv; 959 c = getcmd(arg); 960 if (c == (struct cmd *)-1) 961 fprintf(ttyout, "?Ambiguous %s command `%s'\n", 962 cmd, arg); 963 else if (c == NULL) 964 fprintf(ttyout, "?Invalid %s command `%s'\n", 965 cmd, arg); 966 else { 967 if (isusage) { 968 nargv[0] = c->c_name; 969 (*c->c_handler)(0, nargv); 970 } else 971 fprintf(ttyout, "%-*s\t%s\n", HELPINDENT, 972 c->c_name, c->c_help); 973 } 974 } 975 } 976 977 struct option * 978 getoption(const char *name) 979 { 980 const char *p; 981 struct option *c; 982 983 if (name == NULL) 984 return (NULL); 985 for (c = optiontab; (p = c->name) != NULL; c++) { 986 if (strcasecmp(p, name) == 0) 987 return (c); 988 } 989 return (NULL); 990 } 991 992 char * 993 getoptionvalue(const char *name) 994 { 995 struct option *c; 996 997 if (name == NULL) 998 errx(1, "getoptionvalue() invoked with NULL name"); 999 c = getoption(name); 1000 if (c != NULL) 1001 return (c->value); 1002 errx(1, "getoptionvalue() invoked with unknown option `%s'", name); 1003 /* NOTREACHED */ 1004 } 1005 1006 static void 1007 setupoption(char *name, char *value, char *defaultvalue) 1008 { 1009 char *nargv[3]; 1010 int overbose; 1011 1012 nargv[0] = "setupoption()"; 1013 nargv[1] = name; 1014 nargv[2] = (value ? value : defaultvalue); 1015 overbose = verbose; 1016 verbose = 0; 1017 setoption(3, nargv); 1018 verbose = overbose; 1019 } 1020 1021 void 1022 usage(void) 1023 { 1024 const char *progname = getprogname(); 1025 1026 (void)fprintf(stderr, 1027 "usage: %s [-46AadefginpRtvV] [-N netrc] [-o outfile] [-P port] [-r retry]\n" 1028 " [-T dir,max[,inc][[user@]host [port]]] [host:path[/]]\n" 1029 " [file:///file] [ftp://[user[:pass]@]host[:port]/path[/]]\n" 1030 " [http://[user[:pass]@]host[:port]/path] [...]\n" 1031 " %s -u URL file [...]\n", progname, progname); 1032 exit(1); 1033 } 1034
Indexes created Fri Sep 26 20:09:58 GMT 2025