fetch.c revision 1.29
1 /* $NetBSD: fetch.c,v 1.29 1998/08/04 03:35:24 lukem Exp $ */ 2 3 /*- 4 * Copyright (c) 1997, 1998 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason Thorpe and 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 #include <sys/cdefs.h> 40 #ifndef lint 41 __RCSID("$NetBSD: fetch.c,v 1.29 1998/08/04 03:35:24 lukem Exp $"); 42 #endif /* not lint */ 43 44 /* 45 * FTP User Program -- Command line file retrieval 46 */ 47 48 #include <sys/types.h> 49 #include <sys/param.h> 50 #include <sys/socket.h> 51 52 #include <netinet/in.h> 53 54 #include <arpa/ftp.h> 55 #include <arpa/inet.h> 56 57 #include <ctype.h> 58 #include <err.h> 59 #include <errno.h> 60 #include <netdb.h> 61 #include <fcntl.h> 62 #include <signal.h> 63 #include <stdio.h> 64 #include <stdlib.h> 65 #include <string.h> 66 #include <unistd.h> 67 #include <util.h> 68 69 #include "ftp_var.h" 70 71 typedef enum { 72 UNKNOWN_URL_T=-1, 73 HTTP_URL_T, 74 FTP_URL_T, 75 FILE_URL_T 76 } url_t; 77 78 static int parse_url __P((const char *, const char *, url_t *, char **, 79 char **, char **, in_port_t *, char **)); 80 static int url_get __P((const char *, const char *, const char *)); 81 void aborthttp __P((int)); 82 83 84 #define ABOUT_URL "about:" /* propaganda */ 85 #define FILE_URL "file://" /* file URL prefix */ 86 #define FTP_URL "ftp://" /* ftp URL prefix */ 87 #define HTTP_URL "http://" /* http URL prefix */ 88 #define FTP_PROXY "ftp_proxy" /* env var with ftp proxy location */ 89 #define HTTP_PROXY "http_proxy" /* env var with http proxy location */ 90 #define NO_PROXY "no_proxy" /* env var with list of non-proxied 91 * hosts, comma or space separated */ 92 93 94 #define EMPTYSTRING(x) ((x) == NULL || (*(x) == '\0')) 95 #define FREEPTR(x) if ((x) != NULL) { free(x); (x) = NULL; } 96 97 /* 98 * Parse URL of form: 99 * <type>://[<user>[:<password>@]]<host>[:<port>]/<url-path> 100 * Returns -1 if a parse error occurred, otherwise 0. 101 * Sets type to url_t, each of the given char ** pointers to a 102 * malloc(3)ed strings of the relevant section, and port to 103 * 0 if not given, or the number given. 104 */ 105 static int 106 parse_url(url, desc, type, user, pass, host, port, path) 107 const char *url; 108 const char *desc; 109 url_t *type; 110 char **user; 111 char **pass; 112 char **host; 113 in_port_t *port; 114 char **path; 115 { 116 char *cp, *ep, *thost; 117 118 if (url == NULL || desc == NULL || type == NULL || user == NULL 119 || pass == NULL || host == NULL || port == NULL || path == NULL) 120 errx(1, "parse_url: invoked with NULL argument!"); 121 122 *type = UNKNOWN_URL_T; 123 *user = *pass = *host = *path = NULL; 124 *port = 0; 125 126 if (strncasecmp(url, HTTP_URL, sizeof(HTTP_URL) - 1) == 0) { 127 url += sizeof(HTTP_URL) - 1; 128 *type = HTTP_URL_T; 129 } else if (strncasecmp(url, FTP_URL, sizeof(FTP_URL) - 1) == 0) { 130 url += sizeof(FTP_URL) - 1; 131 *type = FTP_URL_T; 132 } else if (strncasecmp(url, FILE_URL, sizeof(FILE_URL) - 1) == 0) { 133 url += sizeof(FILE_URL) - 1; 134 *type = FILE_URL_T; 135 } else { 136 warnx("Invalid %s `%s'", desc, url); 137 cleanup_parse_url: 138 FREEPTR(*user); 139 FREEPTR(*pass); 140 FREEPTR(*host); 141 FREEPTR(*path); 142 return (-1); 143 } 144 145 if (*url == '\0') 146 return (0); 147 148 /* find [user[:pass]@]host[:port] */ 149 ep = strchr(url, '/'); 150 if (ep == NULL) 151 thost = xstrdup(url); 152 else { 153 size_t len = ep - url; 154 thost = (char *)xmalloc(len + 1); 155 strncpy(thost, url, len); 156 thost[len] = '\0'; 157 *path = xstrdup(ep); 158 } 159 160 cp = strchr(thost, '@'); 161 if (cp != NULL) { 162 *user = thost; 163 *cp = '\0'; 164 *host = xstrdup(cp + 1); 165 cp = strchr(*user, ':'); 166 if (cp != NULL) { 167 *cp = '\0'; 168 *pass = xstrdup(cp + 1); 169 } 170 } else 171 *host = thost; 172 173 /* look for [:port] */ 174 cp = strrchr(*host, ':'); 175 if (cp != NULL) { 176 long nport; 177 178 *cp = '\0'; 179 nport = strtol(cp + 1, &ep, 10); 180 if (nport < 1 || nport > MAX_IN_PORT_T || *ep != '\0') { 181 warnx("Invalid port `%s' in %s `%s'", cp, desc, line); 182 goto cleanup_parse_url; 183 } 184 *port = htons((in_port_t)nport); 185 } 186 187 if (debug) 188 fprintf(ttyout, 189 "parse_url: user `%s', pass `%s', host %s:%d, path `%s'\n", 190 *user ? *user : "", *pass ? *pass : "", *host ? *host : "", 191 ntohs(*port), *path ? *path : ""); 192 193 return (0); 194 } 195 196 197 jmp_buf httpabort; 198 199 /* 200 * Retrieve URL, via the proxy in $proxyvar if necessary. 201 * Modifies the string argument given. 202 * Returns -1 on failure, 0 on success 203 */ 204 static int 205 url_get(url, proxyenv, outfile) 206 const char *url; 207 const char *proxyenv; 208 const char *outfile; 209 { 210 struct sockaddr_in sin; 211 int isredirected, isproxy; 212 volatile int s; 213 size_t len; 214 char *cp, *ep; 215 char *buf, *savefile; 216 volatile sig_t oldintr, oldintp; 217 off_t hashbytes; 218 struct hostent *hp = NULL; 219 int (*closefunc) __P((FILE *)); 220 FILE *fin, *fout; 221 int retval; 222 time_t mtime; 223 url_t urltype; 224 char *user, *pass, *host; 225 in_port_t port; 226 char *path; 227 228 closefunc = NULL; 229 fin = fout = NULL; 230 s = -1; 231 buf = savefile = NULL; 232 isredirected = isproxy = 0; 233 retval = -1; 234 235 #ifdef __GNUC__ /* shut up gcc warnings */ 236 (void)&closefunc; 237 (void)&fin; 238 (void)&fout; 239 (void)&buf; 240 (void)&savefile; 241 (void)&retval; 242 (void)&isproxy; 243 #endif 244 245 if (parse_url(url, "URL", &urltype, &user, &pass, &host, &port, &path) 246 == -1) 247 goto cleanup_url_get; 248 if (port == 0) 249 port = httpport; 250 251 if (urltype == FILE_URL_T && ! EMPTYSTRING(host) 252 && strcasecmp(host, "localhost") != 0) { 253 warnx("No support for non local file URL `%s'", url); 254 goto cleanup_url_get; 255 } 256 257 if (EMPTYSTRING(path)) { 258 if (urltype == FTP_URL_T) 259 goto noftpautologin; 260 if (urltype != HTTP_URL_T || outfile == NULL) { 261 warnx("Invalid URL (no file after host) `%s'", url); 262 goto cleanup_url_get; 263 } 264 } 265 266 if (outfile) 267 savefile = xstrdup(outfile); 268 else { 269 cp = strrchr(path, '/'); /* find savefile */ 270 if (cp != NULL) 271 savefile = xstrdup(cp + 1); 272 else 273 savefile = xstrdup(path); 274 } 275 if (EMPTYSTRING(savefile)) { 276 if (urltype == FTP_URL_T) 277 goto noftpautologin; 278 warnx("Invalid URL (no file after directory) `%s'", url); 279 goto cleanup_url_get; 280 } 281 282 filesize = -1; 283 mtime = -1; 284 if (urltype == FILE_URL_T) { /* file:// URLs */ 285 struct stat sb; 286 287 direction = "copied"; 288 fin = fopen(path, "r"); 289 if (fin == NULL) { 290 warn("Cannot open file `%s'", path); 291 goto cleanup_url_get; 292 } 293 if (fstat(fileno(fin), &sb) == 0) { 294 mtime = sb.st_mtime; 295 filesize = sb.st_size; 296 } 297 fprintf(ttyout, "Copying %s\n", path); 298 } else { /* ftp:// or http:// URLs */ 299 direction = "retrieved"; 300 if (proxyenv != NULL) { /* use proxy */ 301 url_t purltype; 302 char *puser, *ppass, *phost; 303 in_port_t pport; 304 char *ppath; 305 char *no_proxy; 306 307 isproxy = 1; 308 309 /* check URL against list of no_proxied sites */ 310 no_proxy = getenv(NO_PROXY); 311 if (no_proxy != NULL) { 312 char *np, *np_copy; 313 long np_port; 314 size_t hlen, plen; 315 316 np_copy = xstrdup(no_proxy); 317 hlen = strlen(host); 318 while ((cp = strsep(&np_copy, " ,")) != NULL) { 319 if (*cp == '\0') 320 continue; 321 if ((np = strchr(cp, ':')) != NULL) { 322 *np = '\0'; 323 np_port = 324 strtol(np + 1, &ep, 10); 325 if (*ep != '\0') 326 continue; 327 if (port != 328 htons((in_port_t)np_port)) 329 continue; 330 } 331 plen = strlen(cp); 332 if (strncasecmp(host + hlen - plen, 333 cp, plen) == 0) { 334 isproxy = 0; 335 break; 336 } 337 } 338 FREEPTR(np_copy); 339 } 340 341 if (isproxy) { 342 if (parse_url(proxyenv, "proxy URL", &purltype, 343 &puser, &ppass, &phost, &pport, &ppath) 344 == -1) 345 goto cleanup_url_get; 346 347 if ((purltype != HTTP_URL_T 348 && purltype != FTP_URL_T) || 349 EMPTYSTRING(phost) || 350 (! EMPTYSTRING(ppath) 351 && strcmp(ppath, "/") != 0)) { 352 warnx("Malformed proxy URL `%s'", 353 proxyenv); 354 FREEPTR(puser); 355 FREEPTR(ppass); 356 FREEPTR(phost); 357 FREEPTR(ppath); 358 goto cleanup_url_get; 359 } 360 361 FREEPTR(user); 362 user = puser; 363 FREEPTR(pass); 364 pass = ppass; 365 FREEPTR(host); 366 host = phost; 367 if (pport == 0) 368 port = httpport; 369 else 370 port = pport; 371 FREEPTR(path); 372 FREEPTR(ppath); 373 path = xstrdup(url); 374 } 375 } /* proxyenv != NULL */ 376 377 memset(&sin, 0, sizeof(sin)); 378 sin.sin_family = AF_INET; 379 380 if (isdigit((unsigned char)host[0])) { 381 if (inet_aton(host, &sin.sin_addr) == 0) { 382 warnx("Invalid IP address `%s'", host); 383 goto cleanup_url_get; 384 } 385 } else { 386 hp = gethostbyname(host); 387 if (hp == NULL) { 388 warnx("%s: %s", host, hstrerror(h_errno)); 389 goto cleanup_url_get; 390 } 391 if (hp->h_addrtype != AF_INET) { 392 warnx("`%s': not an Internet address?", host); 393 goto cleanup_url_get; 394 } 395 memcpy(&sin.sin_addr, hp->h_addr, hp->h_length); 396 } 397 398 if (port == 0) 399 port = httpport; 400 sin.sin_port = port; 401 402 s = socket(AF_INET, SOCK_STREAM, 0); 403 if (s == -1) { 404 warn("Can't create socket"); 405 goto cleanup_url_get; 406 } 407 408 while (xconnect(s, (struct sockaddr *)&sin, 409 sizeof(sin)) == -1) { 410 if (errno == EINTR) 411 continue; 412 if (hp && hp->h_addr_list[1]) { 413 int oerrno = errno; 414 char *ia; 415 416 ia = inet_ntoa(sin.sin_addr); 417 errno = oerrno; 418 warn("Connect to address `%s'", ia); 419 hp->h_addr_list++; 420 memcpy(&sin.sin_addr, hp->h_addr_list[0], 421 (size_t)hp->h_length); 422 fprintf(ttyout, "Trying %s...\n", 423 inet_ntoa(sin.sin_addr)); 424 (void)close(s); 425 s = socket(AF_INET, SOCK_STREAM, 0); 426 if (s < 0) { 427 warn("Can't create socket"); 428 goto cleanup_url_get; 429 } 430 continue; 431 } 432 warn("Can't connect to `%s'", host); 433 goto cleanup_url_get; 434 } 435 436 fin = fdopen(s, "r+"); 437 /* 438 * Construct and send the request. 439 * Proxy requests don't want leading /. 440 */ 441 if (isproxy) { 442 fprintf(ttyout, "Requesting %s\n (via %s)\n", 443 url, proxyenv); 444 fprintf(fin, "GET %s HTTP/1.0\r\n\r\n", path); 445 } else { 446 fprintf(ttyout, "Requesting %s\n", url); 447 fprintf(fin, "GET %s HTTP/1.1\r\n", path); 448 fprintf(fin, "Host: %s\r\n", host); 449 fprintf(fin, "Connection: close\r\n\r\n"); 450 } 451 if (fflush(fin) == EOF) { 452 warn("Writing HTTP request"); 453 goto cleanup_url_get; 454 } 455 456 /* Read the response */ 457 if ((buf = fparseln(fin, &len, NULL, "\0\0\0", 0)) == NULL) { 458 warn("Receiving HTTP reply"); 459 goto cleanup_url_get; 460 } 461 while (len > 0 && (buf[len-1] == '\r' || buf[len-1] == '\n')) 462 buf[--len] = '\0'; 463 if (debug) 464 fprintf(ttyout, "received `%s'\n", buf); 465 466 cp = strchr(buf, ' '); 467 if (cp == NULL) 468 goto improper; 469 else 470 cp++; 471 if (strncmp(cp, "301", 3) == 0 || strncmp(cp, "302", 3) == 0) { 472 isredirected++; 473 } else if (strncmp(cp, "200", 3)) { 474 warnx("Error retrieving file `%s'", cp); 475 goto cleanup_url_get; 476 } 477 478 /* Read the rest of the header. */ 479 FREEPTR(buf); 480 while (1) { 481 if ((buf = fparseln(fin, &len, NULL, "\0\0\0", 0)) 482 == NULL) { 483 warn("Receiving HTTP reply"); 484 goto cleanup_url_get; 485 } 486 while (len > 0 && 487 (buf[len-1] == '\r' || buf[len-1] == '\n')) 488 buf[--len] = '\0'; 489 if (len == 0) 490 break; 491 if (debug) 492 fprintf(ttyout, "received `%s'\n", buf); 493 494 /* Look for some headers */ 495 cp = buf; 496 #define CONTENTLEN "Content-Length: " 497 if (strncasecmp(cp, CONTENTLEN, 498 sizeof(CONTENTLEN) - 1) == 0) { 499 cp += sizeof(CONTENTLEN) - 1; 500 filesize = strtol(cp, &ep, 10); 501 if (filesize < 1 || *ep != '\0') 502 goto improper; 503 if (debug) 504 fprintf(ttyout, 505 #ifndef NO_QUAD 506 "parsed length as: %qd\n", 507 (long long)filesize); 508 #else 509 "parsed length as: %ld\n", 510 (long)filesize); 511 #endif 512 #define LASTMOD "Last-Modified: " 513 } else if (strncasecmp(cp, LASTMOD, 514 sizeof(LASTMOD) - 1) == 0) { 515 struct tm parsed; 516 char *t; 517 518 cp += sizeof(LASTMOD) - 1; 519 /* RFC 1123 */ 520 if ((t = strptime(cp, 521 "%a, %d %b %Y %H:%M:%S GMT", 522 &parsed)) 523 /* RFC 850 */ 524 || (t = strptime(cp, 525 "%a, %d-%b-%y %H:%M:%S GMT", 526 &parsed)) 527 /* asctime */ 528 || (t = strptime(cp, 529 "%a, %b %d %H:%M:%S %Y", 530 &parsed))) { 531 if (*t == '\0') 532 mtime = mktime(&parsed); 533 if (debug && mtime != -1) 534 fprintf(ttyout, 535 "parsed date as: %s", 536 ctime(&mtime)); 537 } 538 #define LOCATION "Location: " 539 } else if (isredirected && 540 strncasecmp(cp, LOCATION, 541 sizeof(LOCATION) - 1) == 0) { 542 cp += sizeof(LOCATION) - 1; 543 if (debug) 544 fprintf(ttyout, 545 "parsed location as: %s\n", cp); 546 if (verbose) 547 fprintf(ttyout, 548 "Redirected to %s\n", cp); 549 retval = url_get(cp, proxyenv, outfile); 550 goto cleanup_url_get; 551 } 552 } 553 FREEPTR(buf); 554 } 555 556 oldintr = oldintp = NULL; 557 558 /* Open the output file. */ 559 if (strcmp(savefile, "-") == 0) { 560 fout = stdout; 561 } else if (*savefile == '|') { 562 oldintp = signal(SIGPIPE, SIG_IGN); 563 fout = popen(savefile + 1, "w"); 564 if (fout == NULL) { 565 warn("Can't run `%s'", savefile + 1); 566 goto cleanup_url_get; 567 } 568 closefunc = pclose; 569 } else { 570 fout = fopen(savefile, "w"); 571 if (fout == NULL) { 572 warn("Can't open `%s'", savefile); 573 goto cleanup_url_get; 574 } 575 closefunc = fclose; 576 } 577 578 /* Trap signals */ 579 if (setjmp(httpabort)) { 580 if (oldintr) 581 (void)signal(SIGINT, oldintr); 582 if (oldintp) 583 (void)signal(SIGPIPE, oldintp); 584 goto cleanup_url_get; 585 } 586 oldintr = signal(SIGINT, aborthttp); 587 588 bytes = 0; 589 hashbytes = mark; 590 progressmeter(-1); 591 592 /* Finally, suck down the file. */ 593 buf = xmalloc(BUFSIZ); 594 while ((len = fread(buf, sizeof(char), BUFSIZ, fin)) > 0) { 595 bytes += len; 596 if (fwrite(buf, sizeof(char), len, fout) != len) { 597 warn("Writing `%s'", savefile); 598 goto cleanup_url_get; 599 } 600 if (hash && !progress) { 601 while (bytes >= hashbytes) { 602 (void)putc('#', ttyout); 603 hashbytes += mark; 604 } 605 (void)fflush(ttyout); 606 } 607 } 608 if (hash && !progress && bytes > 0) { 609 if (bytes < mark) 610 (void)putc('#', ttyout); 611 (void)putc('\n', ttyout); 612 (void)fflush(ttyout); 613 } 614 if (ferror(fin)) { 615 warn("Reading file"); 616 goto cleanup_url_get; 617 } 618 progressmeter(1); 619 (void)fflush(fout); 620 (void)signal(SIGINT, oldintr); 621 if (oldintp) 622 (void)signal(SIGPIPE, oldintp); 623 if (closefunc == fclose && mtime != -1) { 624 struct timeval tval[2]; 625 626 (void)gettimeofday(&tval[0], NULL); 627 tval[1].tv_sec = mtime; 628 tval[1].tv_usec = 0; 629 if (futimes(fileno(fout), tval) == -1) { 630 fprintf(ttyout, 631 "Can't change modification time to %s", 632 asctime(localtime(&mtime))); 633 } 634 } 635 if (bytes > 0) 636 ptransfer(0); 637 638 retval = 0; 639 goto cleanup_url_get; 640 641 noftpautologin: 642 warnx( 643 "Auto-login using ftp URLs isn't supported when using $ftp_proxy"); 644 goto cleanup_url_get; 645 646 improper: 647 warnx("Improper response from `%s'", host); 648 649 cleanup_url_get: 650 resetsockbufsize(); 651 if (fin != NULL) 652 fclose(fin); 653 else if (s != -1) 654 close(s); 655 if (closefunc != NULL && fout != NULL) 656 (*closefunc)(fout); 657 FREEPTR(savefile); 658 FREEPTR(user); 659 FREEPTR(pass); 660 FREEPTR(host); 661 FREEPTR(path); 662 FREEPTR(buf); 663 return (retval); 664 } 665 666 /* 667 * Abort a http retrieval 668 */ 669 void 670 aborthttp(notused) 671 int notused; 672 { 673 674 alarmtimer(0); 675 fputs("\nHTTP fetch aborted.\n", ttyout); 676 (void)fflush(ttyout); 677 longjmp(httpabort, 1); 678 } 679 680 /* 681 * Retrieve multiple files from the command line, transferring 682 * URLs of the form "host:path", "ftp://host/path" using the 683 * ftp protocol, URLs of the form "http://host/path" using the 684 * http protocol, and URLs of the form "file:///" by simple 685 * copying. 686 * If path has a trailing "/", then return (-1); 687 * the path will be cd-ed into and the connection remains open, 688 * and the function will return -1 (to indicate the connection 689 * is alive). 690 * If an error occurs the return value will be the offset+1 in 691 * argv[] of the file that caused a problem (i.e, argv[x] 692 * returns x+1) 693 * Otherwise, 0 is returned if all files retrieved successfully. 694 */ 695 int 696 auto_fetch(argc, argv, outfile) 697 int argc; 698 char *argv[]; 699 char *outfile; 700 { 701 static char lasthost[MAXHOSTNAMELEN]; 702 char portnum[6]; /* large enough for "65535\0" */ 703 char *xargv[5]; 704 const char *line; 705 char *cp, *host, *path, *dir, *file; 706 char *user, *pass; 707 in_port_t port; 708 char *ftpproxy, *httpproxy; 709 int rval, xargc; 710 volatile int argpos; 711 int dirhasglob, filehasglob; 712 char rempath[MAXPATHLEN]; 713 714 #ifdef __GNUC__ /* to shut up gcc warnings */ 715 (void)&outfile; 716 #endif 717 718 argpos = 0; 719 720 if (setjmp(toplevel)) { 721 if (connected) 722 disconnect(0, NULL); 723 return (argpos + 1); 724 } 725 (void)signal(SIGINT, (sig_t)intr); 726 (void)signal(SIGPIPE, (sig_t)lostpeer); 727 728 ftpproxy = getenv(FTP_PROXY); 729 httpproxy = getenv(HTTP_PROXY); 730 host = path = dir = file = user = pass = NULL; 731 732 /* 733 * Loop through as long as there's files to fetch. 734 */ 735 for (rval = 0; (rval == 0) && (argpos < argc); argpos++) { 736 if (strchr(argv[argpos], ':') == NULL) 737 break; 738 host = path = dir = file = user = pass = NULL; 739 line = argv[argpos]; 740 741 #ifndef SMALL 742 /* 743 * Check for about:* 744 */ 745 if (strncasecmp(line, ABOUT_URL, sizeof(ABOUT_URL) - 1) == 0) { 746 line += sizeof(ABOUT_URL) -1; 747 if (strcasecmp(line, "ftp") == 0) { 748 fprintf(ttyout, "%s\n%s\n", 749 "This version of ftp has been enhanced by Luke Mewburn <lukem (at) netbsd.org>.", 750 "Execute 'man ftp' for more details"); 751 } else if (strcasecmp(line, "netbsd") == 0) { 752 fprintf(ttyout, "%s\n%s\n", 753 "NetBSD is a freely available and redistributable UNIX-like operating system.", 754 "For more information, see http://www.netbsd.org/index.html"); 755 } else { 756 fprintf(ttyout, 757 "`%s' is an interesting topic.\n", line); 758 } 759 continue; 760 } 761 #endif /* SMALL */ 762 763 /* 764 * Check for file:// and http:// URLs. 765 */ 766 if (strncasecmp(line, HTTP_URL, sizeof(HTTP_URL) - 1) == 0 || 767 strncasecmp(line, FILE_URL, sizeof(FILE_URL) - 1) == 0) { 768 if (url_get(line, httpproxy, outfile) == -1) 769 rval = argpos + 1; 770 continue; 771 } 772 773 /* 774 * Try FTP URL-style arguments next. If ftpproxy is 775 * set, use url_get() instead of standard ftp. 776 * Finally, try host:file. 777 */ 778 if (strncasecmp(line, FTP_URL, sizeof(FTP_URL) - 1) == 0) { 779 int urltype; 780 781 if (ftpproxy) { 782 if (url_get(line, ftpproxy, outfile) == -1) 783 rval = argpos + 1; 784 continue; 785 } 786 if ((parse_url(line, "URL", &urltype, &user, &pass, 787 &host, &port, &path) == -1) || 788 (user != NULL && *user == '\0') || 789 (pass != NULL && *pass == '\0') || 790 EMPTYSTRING(host)) { 791 warnx("Invalid URL `%s'", argv[argpos]); 792 rval = argpos + 1; 793 break; 794 } 795 } else { /* classic style `host:file' */ 796 host = xstrdup(line); 797 cp = strchr(host, ':'); 798 if (cp != NULL) { 799 *cp = '\0'; 800 path = xstrdup(cp + 1); 801 } 802 } 803 if (EMPTYSTRING(host)) { 804 rval = argpos + 1; 805 break; 806 } 807 808 /* 809 * If dir is NULL, the file wasn't specified 810 * (URL looked something like ftp://host) 811 */ 812 dir = path; 813 if (dir != NULL) 814 *dir++ = '\0'; 815 816 /* 817 * Extract the file and (if present) directory name. 818 */ 819 if (! EMPTYSTRING(dir)) { 820 cp = strrchr(dir, '/'); 821 if (cp != NULL) { 822 *cp++ = '\0'; 823 file = cp; 824 } else { 825 file = dir; 826 dir = NULL; 827 } 828 } 829 if (debug) 830 fprintf(ttyout, 831 "auto_fetch: user `%s', pass `%s', host %s:%d, path, `%s', dir `%s', file `%s'\n", 832 user ? user : "", pass ? pass : "", 833 host ? host : "", ntohs(port), path ? path : "", 834 dir ? dir : "", file ? file : ""); 835 836 /* 837 * Set up the connection if we don't have one. 838 */ 839 if (strcasecmp(host, lasthost) != 0) { 840 int oautologin; 841 842 (void)strcpy(lasthost, host); 843 if (connected) 844 disconnect(0, NULL); 845 xargv[0] = __progname; 846 xargv[1] = host; 847 xargv[2] = NULL; 848 xargc = 2; 849 if (port) { 850 snprintf(portnum, sizeof(portnum), 851 "%d", (int)port); 852 xargv[2] = portnum; 853 xargv[3] = NULL; 854 xargc = 3; 855 } 856 oautologin = autologin; 857 if (user != NULL) 858 autologin = 0; 859 setpeer(xargc, xargv); 860 autologin = oautologin; 861 if ((connected == 0) 862 || ((connected == 1) && 863 !ftp_login(host, user, pass)) ) { 864 warnx("Can't connect or login to host `%s'", 865 host); 866 rval = argpos + 1; 867 break; 868 } 869 870 /* Always use binary transfers. */ 871 setbinary(0, NULL); 872 } 873 /* cd back to `/' */ 874 xargv[0] = "cd"; 875 xargv[1] = "/"; 876 xargv[2] = NULL; 877 cd(2, xargv); 878 if (! dirchange) { 879 rval = argpos + 1; 880 break; 881 } 882 883 dirhasglob = filehasglob = 0; 884 if (doglob) { 885 if (! EMPTYSTRING(dir) && 886 strpbrk(dir, "*?[]{}") != NULL) 887 dirhasglob = 1; 888 if (! EMPTYSTRING(file) && 889 strpbrk(file, "*?[]{}") != NULL) 890 filehasglob = 1; 891 } 892 893 /* Change directories, if necessary. */ 894 if (! EMPTYSTRING(dir) && !dirhasglob) { 895 xargv[0] = "cd"; 896 xargv[1] = dir; 897 xargv[2] = NULL; 898 cd(2, xargv); 899 if (! dirchange) { 900 rval = argpos + 1; 901 break; 902 } 903 } 904 905 if (EMPTYSTRING(file)) { 906 rval = -1; 907 break; 908 } 909 910 if (!verbose) 911 fprintf(ttyout, "Retrieving %s/%s\n", dir ? dir : "", 912 file); 913 914 if (dirhasglob) { 915 snprintf(rempath, sizeof(rempath), "%s/%s", dir, file); 916 file = rempath; 917 } 918 919 /* Fetch the file(s). */ 920 xargc = 2; 921 xargv[0] = "get"; 922 xargv[1] = file; 923 xargv[2] = NULL; 924 if (dirhasglob || filehasglob) { 925 int ointeractive; 926 927 ointeractive = interactive; 928 interactive = 0; 929 xargv[0] = "mget"; 930 mget(xargc, xargv); 931 interactive = ointeractive; 932 } else { 933 if (outfile != NULL) { 934 xargv[2] = outfile; 935 xargv[3] = NULL; 936 xargc++; 937 } 938 get(xargc, xargv); 939 if (outfile != NULL && strcmp(outfile, "-") != 0 940 && outfile[0] != '|') 941 outfile = NULL; 942 } 943 944 if ((code / 100) != COMPLETE) 945 rval = argpos + 1; 946 } 947 if (connected && rval != -1) 948 disconnect(0, NULL); 949 FREEPTR(host); 950 FREEPTR(path); 951 FREEPTR(user); 952 FREEPTR(pass); 953 return (rval); 954 } 955
Indexes created Tue Sep 23 07:09:52 GMT 2025