1 /* $NetBSD: fetch.c,v 1.214 2015/12/16 19:17:16 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 1997-2015 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 * This code is derived from software contributed to The NetBSD Foundation 11 * by Scott Aaron Bamford. 12 * 13 * This code is derived from software contributed to The NetBSD Foundation 14 * by Thomas Klausner. 15 * 16 * Redistribution and use in source and binary forms, with or without 17 * modification, are permitted provided that the following conditions 18 * are met: 19 * 1. Redistributions of source code must retain the above copyright 20 * notice, this list of conditions and the following disclaimer. 21 * 2. Redistributions in binary form must reproduce the above copyright 22 * notice, this list of conditions and the following disclaimer in the 23 * documentation and/or other materials provided with the distribution. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 26 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGE. 36 */ 37 38 #include <sys/cdefs.h> 39 #ifndef lint 40 __RCSID("$NetBSD: fetch.c,v 1.214 2015/12/16 19:17:16 christos Exp $"); 41 #endif /* not lint */ 42 43 /* 44 * FTP User Program -- Command line file retrieval 45 */ 46 47 #include <sys/types.h> 48 #include <sys/param.h> 49 #include <sys/socket.h> 50 #include <sys/stat.h> 51 #include <sys/time.h> 52 53 #include <netinet/in.h> 54 55 #include <arpa/ftp.h> 56 #include <arpa/inet.h> 57 58 #include <assert.h> 59 #include <ctype.h> 60 #include <err.h> 61 #include <errno.h> 62 #include <netdb.h> 63 #include <fcntl.h> 64 #include <stdio.h> 65 #include <stdlib.h> 66 #include <string.h> 67 #include <unistd.h> 68 #include <time.h> 69 70 #include "ssl.h" 71 #include "ftp_var.h" 72 #include "version.h" 73 74 typedef enum { 75 UNKNOWN_URL_T=-1, 76 HTTP_URL_T, 77 HTTPS_URL_T, 78 FTP_URL_T, 79 FILE_URL_T, 80 CLASSIC_URL_T 81 } url_t; 82 83 struct authinfo { 84 char *auth; 85 char *user; 86 char *pass; 87 }; 88 89 struct urlinfo { 90 char *host; 91 char *port; 92 char *path; 93 url_t utype; 94 in_port_t portnum; 95 }; 96 97 __dead static void aborthttp(int); 98 __dead static void timeouthttp(int); 99 #ifndef NO_AUTH 100 static int auth_url(const char *, char **, const struct authinfo *); 101 static void base64_encode(const unsigned char *, size_t, unsigned char *); 102 #endif 103 static int go_fetch(const char *); 104 static int fetch_ftp(const char *); 105 static int fetch_url(const char *, const char *, char *, char *); 106 static const char *match_token(const char **, const char *); 107 static int parse_url(const char *, const char *, struct urlinfo *, 108 struct authinfo *); 109 static void url_decode(char *); 110 static void freeauthinfo(struct authinfo *); 111 static void freeurlinfo(struct urlinfo *); 112 113 static int redirect_loop; 114 115 116 #define STRNEQUAL(a,b) (strncasecmp((a), (b), sizeof((b))-1) == 0) 117 #define ISLWS(x) ((x)=='\r' || (x)=='\n' || (x)==' ' || (x)=='\t') 118 #define SKIPLWS(x) do { while (ISLWS((*x))) x++; } while (0) 119 120 121 #define ABOUT_URL "about:" /* propaganda */ 122 #define FILE_URL "file://" /* file URL prefix */ 123 #define FTP_URL "ftp://" /* ftp URL prefix */ 124 #define HTTP_URL "http://" /* http URL prefix */ 125 #ifdef WITH_SSL 126 #define HTTPS_URL "https://" /* https URL prefix */ 127 128 #define IS_HTTP_TYPE(urltype) \ 129 (((urltype) == HTTP_URL_T) || ((urltype) == HTTPS_URL_T)) 130 #else 131 #define IS_HTTP_TYPE(urltype) \ 132 ((urltype) == HTTP_URL_T) 133 #endif 134 135 /* 136 * Determine if token is the next word in buf (case insensitive). 137 * If so, advance buf past the token and any trailing LWS, and 138 * return a pointer to the token (in buf). Otherwise, return NULL. 139 * token may be preceded by LWS. 140 * token must be followed by LWS or NUL. (I.e, don't partial match). 141 */ 142 static const char * 143 match_token(const char **buf, const char *token) 144 { 145 const char *p, *orig; 146 size_t tlen; 147 148 tlen = strlen(token); 149 p = *buf; 150 SKIPLWS(p); 151 orig = p; 152 if (strncasecmp(p, token, tlen) != 0) 153 return NULL; 154 p += tlen; 155 if (*p != '\0' && !ISLWS(*p)) 156 return NULL; 157 SKIPLWS(p); 158 orig = *buf; 159 *buf = p; 160 return orig; 161 } 162 163 static void 164 initauthinfo(struct authinfo *ai, char *auth) 165 { 166 ai->auth = auth; 167 ai->user = ai->pass = 0; 168 } 169 170 static void 171 freeauthinfo(struct authinfo *a) 172 { 173 FREEPTR(a->user); 174 if (a->pass != NULL) 175 memset(a->pass, 0, strlen(a->pass)); 176 FREEPTR(a->pass); 177 } 178 179 static void 180 initurlinfo(struct urlinfo *ui) 181 { 182 ui->host = ui->port = ui->path = 0; 183 ui->utype = UNKNOWN_URL_T; 184 ui->portnum = 0; 185 } 186 187 static void 188 freeurlinfo(struct urlinfo *ui) 189 { 190 FREEPTR(ui->host); 191 FREEPTR(ui->port); 192 FREEPTR(ui->path); 193 } 194 195 #ifndef NO_AUTH 196 /* 197 * Generate authorization response based on given authentication challenge. 198 * Returns -1 if an error occurred, otherwise 0. 199 * Sets response to a malloc(3)ed string; caller should free. 200 */ 201 static int 202 auth_url(const char *challenge, char **response, const struct authinfo *auth) 203 { 204 const char *cp, *scheme, *errormsg; 205 char *ep, *clear, *realm; 206 char uuser[BUFSIZ], *gotpass; 207 const char *upass; 208 int rval; 209 size_t len, clen, rlen; 210 211 *response = NULL; 212 clear = realm = NULL; 213 rval = -1; 214 cp = challenge; 215 scheme = "Basic"; /* only support Basic authentication */ 216 gotpass = NULL; 217 218 DPRINTF("auth_url: challenge `%s'\n", challenge); 219 220 if (! match_token(&cp, scheme)) { 221 warnx("Unsupported authentication challenge `%s'", 222 challenge); 223 goto cleanup_auth_url; 224 } 225 226 #define REALM "realm=\"" 227 if (STRNEQUAL(cp, REALM)) 228 cp += sizeof(REALM) - 1; 229 else { 230 warnx("Unsupported authentication challenge `%s'", 231 challenge); 232 goto cleanup_auth_url; 233 } 234 /* XXX: need to improve quoted-string parsing to support \ quoting, etc. */ 235 if ((ep = strchr(cp, '\"')) != NULL) { 236 len = ep - cp; 237 realm = (char *)ftp_malloc(len + 1); 238 (void)strlcpy(realm, cp, len + 1); 239 } else { 240 warnx("Unsupported authentication challenge `%s'", 241 challenge); 242 goto cleanup_auth_url; 243 } 244 245 fprintf(ttyout, "Username for `%s': ", realm); 246 if (auth->user != NULL) { 247 (void)strlcpy(uuser, auth->user, sizeof(uuser)); 248 fprintf(ttyout, "%s\n", uuser); 249 } else { 250 (void)fflush(ttyout); 251 if (get_line(stdin, uuser, sizeof(uuser), &errormsg) < 0) { 252 warnx("%s; can't authenticate", errormsg); 253 goto cleanup_auth_url; 254 } 255 } 256 if (auth->pass != NULL) 257 upass = auth->pass; 258 else { 259 gotpass = getpass("Password: "); 260 if (gotpass == NULL) { 261 warnx("Can't read password"); 262 goto cleanup_auth_url; 263 } 264 upass = gotpass; 265 } 266 267 clen = strlen(uuser) + strlen(upass) + 2; /* user + ":" + pass + "\0" */ 268 clear = (char *)ftp_malloc(clen); 269 (void)strlcpy(clear, uuser, clen); 270 (void)strlcat(clear, ":", clen); 271 (void)strlcat(clear, upass, clen); 272 if (gotpass) 273 memset(gotpass, 0, strlen(gotpass)); 274 275 /* scheme + " " + enc + "\0" */ 276 rlen = strlen(scheme) + 1 + (clen + 2) * 4 / 3 + 1; 277 *response = ftp_malloc(rlen); 278 (void)strlcpy(*response, scheme, rlen); 279 len = strlcat(*response, " ", rlen); 280 /* use `clen - 1' to not encode the trailing NUL */ 281 base64_encode((unsigned char *)clear, clen - 1, 282 (unsigned char *)*response + len); 283 memset(clear, 0, clen); 284 rval = 0; 285 286 cleanup_auth_url: 287 FREEPTR(clear); 288 FREEPTR(realm); 289 return (rval); 290 } 291 292 /* 293 * Encode len bytes starting at clear using base64 encoding into encoded, 294 * which should be at least ((len + 2) * 4 / 3 + 1) in size. 295 */ 296 static void 297 base64_encode(const unsigned char *clear, size_t len, unsigned char *encoded) 298 { 299 static const unsigned char enc[] = 300 "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"; 301 unsigned char *cp; 302 size_t i; 303 304 cp = encoded; 305 for (i = 0; i < len; i += 3) { 306 *(cp++) = enc[((clear[i + 0] >> 2))]; 307 *(cp++) = enc[((clear[i + 0] << 4) & 0x30) 308 | ((clear[i + 1] >> 4) & 0x0f)]; 309 *(cp++) = enc[((clear[i + 1] << 2) & 0x3c) 310 | ((clear[i + 2] >> 6) & 0x03)]; 311 *(cp++) = enc[((clear[i + 2] ) & 0x3f)]; 312 } 313 *cp = '\0'; 314 while (i-- > len) 315 *(--cp) = '='; 316 } 317 #endif 318 319 /* 320 * Decode %xx escapes in given string, `in-place'. 321 */ 322 static void 323 url_decode(char *url) 324 { 325 unsigned char *p, *q; 326 327 if (EMPTYSTRING(url)) 328 return; 329 p = q = (unsigned char *)url; 330 331 #define HEXTOINT(x) (x - (isdigit(x) ? '0' : (islower(x) ? 'a' : 'A') - 10)) 332 while (*p) { 333 if (p[0] == '%' 334 && p[1] && isxdigit((unsigned char)p[1]) 335 && p[2] && isxdigit((unsigned char)p[2])) { 336 *q++ = HEXTOINT(p[1]) * 16 + HEXTOINT(p[2]); 337 p+=3; 338 } else 339 *q++ = *p++; 340 } 341 *q = '\0'; 342 } 343 344 345 /* 346 * Parse URL of form (per RFC 3986): 347 * <type>://[<user>[:<password>]@]<host>[:<port>][/<path>] 348 * Returns -1 if a parse error occurred, otherwise 0. 349 * It's the caller's responsibility to url_decode() the returned 350 * user, pass and path. 351 * 352 * Sets type to url_t, each of the given char ** pointers to a 353 * malloc(3)ed strings of the relevant section, and port to 354 * the number given, or ftpport if ftp://, or httpport if http://. 355 * 356 * XXX: this is not totally RFC 3986 compliant; <path> will have the 357 * leading `/' unless it's an ftp:// URL, as this makes things easier 358 * for file:// and http:// URLs. ftp:// URLs have the `/' between the 359 * host and the URL-path removed, but any additional leading slashes 360 * in the URL-path are retained (because they imply that we should 361 * later do "CWD" with a null argument). 362 * 363 * Examples: 364 * input URL output path 365 * --------- ----------- 366 * "http://host" "/" 367 * "http://host/" "/" 368 * "http://host/path" "/path" 369 * "file://host/dir/file" "dir/file" 370 * "ftp://host" "" 371 * "ftp://host/" "" 372 * "ftp://host//" "/" 373 * "ftp://host/dir/file" "dir/file" 374 * "ftp://host//dir/file" "/dir/file" 375 */ 376 377 static int 378 parse_url(const char *url, const char *desc, struct urlinfo *ui, 379 struct authinfo *auth) 380 { 381 const char *origurl, *tport; 382 char *cp, *ep, *thost; 383 size_t len; 384 385 if (url == NULL || desc == NULL || ui == NULL || auth == NULL) 386 errx(1, "parse_url: invoked with NULL argument!"); 387 DPRINTF("parse_url: %s `%s'\n", desc, url); 388 389 origurl = url; 390 tport = NULL; 391 392 if (STRNEQUAL(url, HTTP_URL)) { 393 url += sizeof(HTTP_URL) - 1; 394 ui->utype = HTTP_URL_T; 395 ui->portnum = HTTP_PORT; 396 tport = httpport; 397 } else if (STRNEQUAL(url, FTP_URL)) { 398 url += sizeof(FTP_URL) - 1; 399 ui->utype = FTP_URL_T; 400 ui->portnum = FTP_PORT; 401 tport = ftpport; 402 } else if (STRNEQUAL(url, FILE_URL)) { 403 url += sizeof(FILE_URL) - 1; 404 ui->utype = FILE_URL_T; 405 #ifdef WITH_SSL 406 } else if (STRNEQUAL(url, HTTPS_URL)) { 407 url += sizeof(HTTPS_URL) - 1; 408 ui->utype = HTTPS_URL_T; 409 ui->portnum = HTTPS_PORT; 410 tport = httpsport; 411 #endif 412 } else { 413 warnx("Invalid %s `%s'", desc, url); 414 cleanup_parse_url: 415 freeauthinfo(auth); 416 freeurlinfo(ui); 417 return (-1); 418 } 419 420 if (*url == '\0') 421 return (0); 422 423 /* find [user[:pass]@]host[:port] */ 424 ep = strchr(url, '/'); 425 if (ep == NULL) 426 thost = ftp_strdup(url); 427 else { 428 len = ep - url; 429 thost = (char *)ftp_malloc(len + 1); 430 (void)strlcpy(thost, url, len + 1); 431 if (ui->utype == FTP_URL_T) /* skip first / for ftp URLs */ 432 ep++; 433 ui->path = ftp_strdup(ep); 434 } 435 436 cp = strchr(thost, '@'); /* look for user[:pass]@ in URLs */ 437 if (cp != NULL) { 438 if (ui->utype == FTP_URL_T) 439 anonftp = 0; /* disable anonftp */ 440 auth->user = thost; 441 *cp = '\0'; 442 thost = ftp_strdup(cp + 1); 443 cp = strchr(auth->user, ':'); 444 if (cp != NULL) { 445 *cp = '\0'; 446 auth->pass = ftp_strdup(cp + 1); 447 } 448 url_decode(auth->user); 449 if (auth->pass) 450 url_decode(auth->pass); 451 } 452 453 #ifdef INET6 454 /* 455 * Check if thost is an encoded IPv6 address, as per 456 * RFC 3986: 457 * `[' ipv6-address ']' 458 */ 459 if (*thost == '[') { 460 cp = thost + 1; 461 if ((ep = strchr(cp, ']')) == NULL || 462 (ep[1] != '\0' && ep[1] != ':')) { 463 warnx("Invalid address `%s' in %s `%s'", 464 thost, desc, origurl); 465 goto cleanup_parse_url; 466 } 467 len = ep - cp; /* change `[xyz]' -> `xyz' */ 468 memmove(thost, thost + 1, len); 469 thost[len] = '\0'; 470 if (! isipv6addr(thost)) { 471 warnx("Invalid IPv6 address `%s' in %s `%s'", 472 thost, desc, origurl); 473 goto cleanup_parse_url; 474 } 475 cp = ep + 1; 476 if (*cp == ':') 477 cp++; 478 else 479 cp = NULL; 480 } else 481 #endif /* INET6 */ 482 if ((cp = strchr(thost, ':')) != NULL) 483 *cp++ = '\0'; 484 ui->host = thost; 485 486 /* look for [:port] */ 487 if (cp != NULL) { 488 unsigned long nport; 489 490 nport = strtoul(cp, &ep, 10); 491 if (*cp == '\0' || *ep != '\0' || 492 nport < 1 || nport > MAX_IN_PORT_T) { 493 warnx("Unknown port `%s' in %s `%s'", 494 cp, desc, origurl); 495 goto cleanup_parse_url; 496 } 497 ui->portnum = nport; 498 tport = cp; 499 } 500 501 if (tport != NULL) 502 ui->port = ftp_strdup(tport); 503 if (ui->path == NULL) { 504 const char *emptypath = "/"; 505 if (ui->utype == FTP_URL_T) /* skip first / for ftp URLs */ 506 emptypath++; 507 ui->path = ftp_strdup(emptypath); 508 } 509 510 DPRINTF("parse_url: user `%s' pass `%s' host %s port %s(%d) " 511 "path `%s'\n", 512 STRorNULL(auth->user), STRorNULL(auth->pass), 513 STRorNULL(ui->host), STRorNULL(ui->port), 514 ui->portnum ? ui->portnum : -1, STRorNULL(ui->path)); 515 516 return (0); 517 } 518 519 sigjmp_buf httpabort; 520 521 static int 522 ftp_socket(const struct urlinfo *ui, void **ssl) 523 { 524 struct addrinfo hints, *res, *res0 = NULL; 525 int error; 526 int s; 527 const char *host = ui->host; 528 const char *port = ui->port; 529 530 if (ui->utype != HTTPS_URL_T) 531 ssl = NULL; 532 533 memset(&hints, 0, sizeof(hints)); 534 hints.ai_flags = 0; 535 hints.ai_family = family; 536 hints.ai_socktype = SOCK_STREAM; 537 hints.ai_protocol = 0; 538 539 error = getaddrinfo(host, port, &hints, &res0); 540 if (error) { 541 warnx("Can't LOOKUP `%s:%s': %s", host, port, 542 (error == EAI_SYSTEM) ? strerror(errno) 543 : gai_strerror(error)); 544 return -1; 545 } 546 547 if (res0->ai_canonname) 548 host = res0->ai_canonname; 549 550 s = -1; 551 if (ssl) 552 *ssl = NULL; 553 for (res = res0; res; res = res->ai_next) { 554 char hname[NI_MAXHOST], sname[NI_MAXSERV]; 555 556 ai_unmapped(res); 557 if (getnameinfo(res->ai_addr, res->ai_addrlen, 558 hname, sizeof(hname), sname, sizeof(sname), 559 NI_NUMERICHOST | NI_NUMERICSERV) != 0) { 560 strlcpy(hname, "?", sizeof(hname)); 561 strlcpy(sname, "?", sizeof(sname)); 562 } 563 564 if (verbose && res0->ai_next) { 565 #ifdef INET6 566 if(res->ai_family == AF_INET6) { 567 fprintf(ttyout, "Trying [%s]:%s ...\n", 568 hname, sname); 569 } else { 570 #endif 571 fprintf(ttyout, "Trying %s:%s ...\n", 572 hname, sname); 573 #ifdef INET6 574 } 575 #endif 576 } 577 578 s = socket(res->ai_family, SOCK_STREAM, res->ai_protocol); 579 if (s < 0) { 580 warn( 581 "Can't create socket for connection to " 582 "`%s:%s'", hname, sname); 583 continue; 584 } 585 586 if (ftp_connect(s, res->ai_addr, res->ai_addrlen, 587 verbose || !res->ai_next) < 0) { 588 close(s); 589 s = -1; 590 continue; 591 } 592 593 #ifdef WITH_SSL 594 if (ssl) { 595 if ((*ssl = fetch_start_ssl(s, host)) == NULL) { 596 close(s); 597 s = -1; 598 continue; 599 } 600 } 601 #endif 602 break; 603 } 604 if (res0) 605 freeaddrinfo(res0); 606 return s; 607 } 608 609 static int 610 handle_noproxy(const char *host, in_port_t portnum) 611 { 612 613 char *cp, *ep, *np, *np_copy, *np_iter, *no_proxy; 614 unsigned long np_port; 615 size_t hlen, plen; 616 int isproxy = 1; 617 618 /* check URL against list of no_proxied sites */ 619 no_proxy = getoptionvalue("no_proxy"); 620 if (EMPTYSTRING(no_proxy)) 621 return isproxy; 622 623 np_iter = np_copy = ftp_strdup(no_proxy); 624 hlen = strlen(host); 625 while ((cp = strsep(&np_iter, " ,")) != NULL) { 626 if (*cp == '\0') 627 continue; 628 if ((np = strrchr(cp, ':')) != NULL) { 629 *np++ = '\0'; 630 np_port = strtoul(np, &ep, 10); 631 if (*np == '\0' || *ep != '\0') 632 continue; 633 if (np_port != portnum) 634 continue; 635 } 636 plen = strlen(cp); 637 if (hlen < plen) 638 continue; 639 if (strncasecmp(host + hlen - plen, cp, plen) == 0) { 640 isproxy = 0; 641 break; 642 } 643 } 644 FREEPTR(np_copy); 645 return isproxy; 646 } 647 648 static int 649 handle_proxy(const char *url, const char *penv, struct urlinfo *ui, 650 struct authinfo *pauth) 651 { 652 struct urlinfo pui; 653 654 if (isipv6addr(ui->host) && strchr(ui->host, '%') != NULL) { 655 warnx("Scoped address notation `%s' disallowed via web proxy", 656 ui->host); 657 return -1; 658 } 659 660 initurlinfo(&pui); 661 if (parse_url(penv, "proxy URL", &pui, pauth) == -1) 662 return -1; 663 664 if ((!IS_HTTP_TYPE(pui.utype) && pui.utype != FTP_URL_T) || 665 EMPTYSTRING(pui.host) || 666 (! EMPTYSTRING(pui.path) && strcmp(pui.path, "/") != 0)) { 667 warnx("Malformed proxy URL `%s'", penv); 668 freeurlinfo(&pui); 669 return -1; 670 } 671 672 FREEPTR(pui.path); 673 pui.path = ftp_strdup(url); 674 675 freeurlinfo(ui); 676 *ui = pui; 677 678 return 0; 679 } 680 681 static void 682 print_host(FETCH *fin, const char *host) 683 { 684 char *h, *p; 685 686 if (strchr(host, ':') == NULL) { 687 fetch_printf(fin, "Host: %s", host); 688 return; 689 } 690 691 /* 692 * strip off IPv6 scope identifier, since it is 693 * local to the node 694 */ 695 h = ftp_strdup(host); 696 if (isipv6addr(h) && (p = strchr(h, '%')) != NULL) 697 *p = '\0'; 698 699 fetch_printf(fin, "Host: [%s]", h); 700 free(h); 701 } 702 703 static void 704 print_agent(FETCH *fin) 705 { 706 const char *useragent; 707 if ((useragent = getenv("FTPUSERAGENT")) != NULL) { 708 fetch_printf(fin, "User-Agent: %s\r\n", useragent); 709 } else { 710 fetch_printf(fin, "User-Agent: %s/%s\r\n", 711 FTP_PRODUCT, FTP_VERSION); 712 } 713 } 714 715 static void 716 print_cache(FETCH *fin, int isproxy) 717 { 718 fetch_printf(fin, isproxy ? 719 "Pragma: no-cache\r\n" : 720 "Cache-Control: no-cache\r\n"); 721 } 722 723 static int 724 print_get(FETCH *fin, int isproxy, const struct urlinfo *ui) 725 { 726 int hasleading = 0; 727 const char *leading = " ("; 728 729 if (isproxy) { 730 if (verbose) { 731 fprintf(ttyout, "%svia %s:%u", leading, 732 ui->host, ui->portnum); 733 leading = ", "; 734 hasleading++; 735 } 736 fetch_printf(fin, "GET %s HTTP/1.0\r\n", ui->path); 737 return hasleading; 738 } 739 740 fetch_printf(fin, "GET %s HTTP/1.1\r\n", ui->path); 741 print_host(fin, ui->host); 742 743 if ((ui->utype == HTTP_URL_T && ui->portnum != HTTP_PORT) || 744 (ui->utype == HTTPS_URL_T && ui->portnum != HTTPS_PORT)) 745 fetch_printf(fin, ":%u", ui->portnum); 746 747 fetch_printf(fin, "\r\n"); 748 fetch_printf(fin, "Accept: */*\r\n"); 749 fetch_printf(fin, "Connection: close\r\n"); 750 if (restart_point) { 751 fputs(leading, ttyout); 752 fetch_printf(fin, "Range: bytes=" LLF "-\r\n", 753 (LLT)restart_point); 754 fprintf(ttyout, "restarting at " LLF, (LLT)restart_point); 755 hasleading++; 756 } 757 return hasleading; 758 } 759 760 static void 761 getmtime(const char *cp, time_t *mtime) 762 { 763 struct tm parsed; 764 const char *t; 765 766 memset(&parsed, 0, sizeof(parsed)); 767 t = parse_rfc2616time(&parsed, cp); 768 769 if (t == NULL) 770 return; 771 772 parsed.tm_isdst = -1; 773 if (*t == '\0') 774 *mtime = timegm(&parsed); 775 776 #ifndef NO_DEBUG 777 if (ftp_debug && *mtime != -1) { 778 fprintf(ttyout, "parsed time as: %s", 779 rfc2822time(localtime(mtime))); 780 } 781 #endif 782 } 783 784 static int 785 print_proxy(FETCH *fin, const char *leading, 786 const char *wwwauth, const char *proxyauth) 787 { 788 int hasleading = 0; 789 790 if (wwwauth) { 791 if (verbose) { 792 fprintf(ttyout, "%swith authorization", leading); 793 hasleading++; 794 } 795 fetch_printf(fin, "Authorization: %s\r\n", wwwauth); 796 } 797 if (proxyauth) { 798 if (verbose) { 799 fprintf(ttyout, "%swith proxy authorization", leading); 800 hasleading++; 801 } 802 fetch_printf(fin, "Proxy-Authorization: %s\r\n", proxyauth); 803 } 804 return hasleading; 805 } 806 807 #define C_OK 0 808 #define C_CLEANUP 1 809 #define C_IMPROPER 2 810 811 812 static int 813 negotiate_connection(FETCH *fin, const char *url, const char *penv, 814 off_t *rangestart, off_t *rangeend, off_t *entitylen, 815 time_t *mtime, struct authinfo *wauth, struct authinfo *pauth, 816 int *rval, int *ischunked) 817 { 818 int len, hcode, rv; 819 char buf[FTPBUFLEN], *ep; 820 const char *errormsg, *cp, *token; 821 char *location, *message, *auth; 822 823 auth = message = location = NULL; 824 825 /* Read the response */ 826 alarmtimer(quit_time ? quit_time : 60); 827 len = fetch_getline(fin, buf, sizeof(buf), &errormsg); 828 alarmtimer(0); 829 if (len < 0) { 830 if (*errormsg == '\n') 831 errormsg++; 832 warnx("Receiving HTTP reply: %s", errormsg); 833 goto cleanup_fetch_url; 834 } 835 while (len > 0 && (ISLWS(buf[len-1]))) 836 buf[--len] = '\0'; 837 838 DPRINTF("%s: received `%s'\n", __func__, buf); 839 840 /* Determine HTTP response code */ 841 cp = strchr(buf, ' '); 842 if (cp == NULL) 843 goto improper; 844 else 845 cp++; 846 847 hcode = strtol(cp, &ep, 10); 848 if (*ep != '\0' && !isspace((unsigned char)*ep)) 849 goto improper; 850 851 message = ftp_strdup(cp); 852 853 /* Read the rest of the header. */ 854 855 for (;;) { 856 alarmtimer(quit_time ? quit_time : 60); 857 len = fetch_getline(fin, buf, sizeof(buf), &errormsg); 858 alarmtimer(0); 859 if (len < 0) { 860 if (*errormsg == '\n') 861 errormsg++; 862 warnx("Receiving HTTP reply: %s", errormsg); 863 goto cleanup_fetch_url; 864 } 865 while (len > 0 && (ISLWS(buf[len-1]))) 866 buf[--len] = '\0'; 867 if (len == 0) 868 break; 869 DPRINTF("%s: received `%s'\n", __func__, buf); 870 871 /* 872 * Look for some headers 873 */ 874 875 cp = buf; 876 877 if (match_token(&cp, "Content-Length:")) { 878 filesize = STRTOLL(cp, &ep, 10); 879 if (filesize < 0 || *ep != '\0') 880 goto improper; 881 DPRINTF("%s: parsed len as: " LLF "\n", 882 __func__, (LLT)filesize); 883 884 } else if (match_token(&cp, "Content-Range:")) { 885 if (! match_token(&cp, "bytes")) 886 goto improper; 887 888 if (*cp == '*') 889 cp++; 890 else { 891 *rangestart = STRTOLL(cp, &ep, 10); 892 if (*rangestart < 0 || *ep != '-') 893 goto improper; 894 cp = ep + 1; 895 *rangeend = STRTOLL(cp, &ep, 10); 896 if (*rangeend < 0 || *rangeend < *rangestart) 897 goto improper; 898 cp = ep; 899 } 900 if (*cp != '/') 901 goto improper; 902 cp++; 903 if (*cp == '*') 904 cp++; 905 else { 906 *entitylen = STRTOLL(cp, &ep, 10); 907 if (*entitylen < 0) 908 goto improper; 909 cp = ep; 910 } 911 if (*cp != '\0') 912 goto improper; 913 914 #ifndef NO_DEBUG 915 if (ftp_debug) { 916 fprintf(ttyout, "parsed range as: "); 917 if (*rangestart == -1) 918 fprintf(ttyout, "*"); 919 else 920 fprintf(ttyout, LLF "-" LLF, 921 (LLT)*rangestart, 922 (LLT)*rangeend); 923 fprintf(ttyout, "/" LLF "\n", (LLT)*entitylen); 924 } 925 #endif 926 if (! restart_point) { 927 warnx( 928 "Received unexpected Content-Range header"); 929 goto cleanup_fetch_url; 930 } 931 932 } else if (match_token(&cp, "Last-Modified:")) { 933 getmtime(cp, mtime); 934 935 } else if (match_token(&cp, "Location:")) { 936 location = ftp_strdup(cp); 937 DPRINTF("%s: parsed location as `%s'\n", 938 __func__, cp); 939 940 } else if (match_token(&cp, "Transfer-Encoding:")) { 941 if (match_token(&cp, "binary")) { 942 warnx( 943 "Bogus transfer encoding `binary' (fetching anyway)"); 944 continue; 945 } 946 if (! (token = match_token(&cp, "chunked"))) { 947 warnx( 948 "Unsupported transfer encoding `%s'", 949 token); 950 goto cleanup_fetch_url; 951 } 952 (*ischunked)++; 953 DPRINTF("%s: using chunked encoding\n", 954 __func__); 955 956 } else if (match_token(&cp, "Proxy-Authenticate:") 957 || match_token(&cp, "WWW-Authenticate:")) { 958 if (! (token = match_token(&cp, "Basic"))) { 959 DPRINTF("%s: skipping unknown auth " 960 "scheme `%s'\n", __func__, token); 961 continue; 962 } 963 FREEPTR(auth); 964 auth = ftp_strdup(token); 965 DPRINTF("%s: parsed auth as `%s'\n", 966 __func__, cp); 967 } 968 969 } 970 /* finished parsing header */ 971 972 switch (hcode) { 973 case 200: 974 break; 975 case 206: 976 if (! restart_point) { 977 warnx("Not expecting partial content header"); 978 goto cleanup_fetch_url; 979 } 980 break; 981 case 300: 982 case 301: 983 case 302: 984 case 303: 985 case 305: 986 case 307: 987 if (EMPTYSTRING(location)) { 988 warnx( 989 "No redirection Location provided by server"); 990 goto cleanup_fetch_url; 991 } 992 if (redirect_loop++ > 5) { 993 warnx("Too many redirections requested"); 994 goto cleanup_fetch_url; 995 } 996 if (hcode == 305) { 997 if (verbose) 998 fprintf(ttyout, "Redirected via %s\n", 999 location); 1000 *rval = fetch_url(url, location, 1001 pauth->auth, wauth->auth); 1002 } else { 1003 if (verbose) 1004 fprintf(ttyout, "Redirected to %s\n", 1005 location); 1006 *rval = go_fetch(location); 1007 } 1008 goto cleanup_fetch_url; 1009 #ifndef NO_AUTH 1010 case 401: 1011 case 407: 1012 { 1013 struct authinfo aauth; 1014 char **authp; 1015 1016 if (hcode == 401) 1017 aauth = *wauth; 1018 else 1019 aauth = *pauth; 1020 1021 if (verbose || aauth.auth == NULL || 1022 aauth.user == NULL || aauth.pass == NULL) 1023 fprintf(ttyout, "%s\n", message); 1024 if (EMPTYSTRING(auth)) { 1025 warnx( 1026 "No authentication challenge provided by server"); 1027 goto cleanup_fetch_url; 1028 } 1029 1030 if (aauth.auth != NULL) { 1031 char reply[10]; 1032 1033 fprintf(ttyout, 1034 "Authorization failed. Retry (y/n)? "); 1035 if (get_line(stdin, reply, sizeof(reply), NULL) 1036 < 0) { 1037 goto cleanup_fetch_url; 1038 } 1039 if (tolower((unsigned char)reply[0]) != 'y') 1040 goto cleanup_fetch_url; 1041 aauth.user = NULL; 1042 aauth.pass = NULL; 1043 } 1044 1045 authp = &aauth.auth; 1046 if (auth_url(auth, authp, &aauth) == 0) { 1047 *rval = fetch_url(url, penv, 1048 pauth->auth, wauth->auth); 1049 memset(*authp, 0, strlen(*authp)); 1050 FREEPTR(*authp); 1051 } 1052 goto cleanup_fetch_url; 1053 } 1054 #endif 1055 default: 1056 if (message) 1057 warnx("Error retrieving file `%s'", message); 1058 else 1059 warnx("Unknown error retrieving file"); 1060 goto cleanup_fetch_url; 1061 } 1062 rv = C_OK; 1063 goto out; 1064 1065 cleanup_fetch_url: 1066 rv = C_CLEANUP; 1067 goto out; 1068 improper: 1069 rv = C_IMPROPER; 1070 goto out; 1071 out: 1072 FREEPTR(auth); 1073 FREEPTR(message); 1074 FREEPTR(location); 1075 return rv; 1076 } /* end of ftp:// or http:// specific setup */ 1077 1078 1079 /* 1080 * Retrieve URL, via a proxy if necessary, using HTTP. 1081 * If proxyenv is set, use that for the proxy, otherwise try ftp_proxy or 1082 * http_proxy/https_proxy as appropriate. 1083 * Supports HTTP redirects. 1084 * Returns 1 on failure, 0 on completed xfer, -1 if ftp connection 1085 * is still open (e.g, ftp xfer with trailing /) 1086 */ 1087 static int 1088 fetch_url(const char *url, const char *proxyenv, char *proxyauth, char *wwwauth) 1089 { 1090 sigfunc volatile oldint; 1091 sigfunc volatile oldpipe; 1092 sigfunc volatile oldalrm; 1093 sigfunc volatile oldquit; 1094 int volatile s; 1095 struct stat sb; 1096 int volatile isproxy; 1097 int rval, ischunked; 1098 size_t flen; 1099 static size_t bufsize; 1100 static char *xferbuf; 1101 const char *cp; 1102 char *ep; 1103 char *volatile savefile; 1104 char *volatile auth; 1105 char *volatile location; 1106 char *volatile message; 1107 char *volatile decodedpath; 1108 struct authinfo wauth, pauth; 1109 off_t hashbytes, rangestart, rangeend, entitylen; 1110 int (*volatile closefunc)(FILE *); 1111 FETCH *volatile fin; 1112 FILE *volatile fout; 1113 const char *volatile penv = proxyenv; 1114 struct urlinfo ui; 1115 time_t mtime; 1116 void *ssl = NULL; 1117 1118 DPRINTF("%s: `%s' proxyenv `%s'\n", __func__, url, STRorNULL(penv)); 1119 1120 oldquit = oldalrm = oldint = oldpipe = NULL; 1121 closefunc = NULL; 1122 fin = NULL; 1123 fout = NULL; 1124 s = -1; 1125 savefile = NULL; 1126 auth = location = message = NULL; 1127 ischunked = isproxy = 0; 1128 rval = 1; 1129 1130 initurlinfo(&ui); 1131 initauthinfo(&wauth, wwwauth); 1132 initauthinfo(&pauth, proxyauth); 1133 1134 decodedpath = NULL; 1135 1136 if (sigsetjmp(httpabort, 1)) 1137 goto cleanup_fetch_url; 1138 1139 if (parse_url(url, "URL", &ui, &wauth) == -1) 1140 goto cleanup_fetch_url; 1141 1142 if (ui.utype == FILE_URL_T && ! EMPTYSTRING(ui.host) 1143 && strcasecmp(ui.host, "localhost") != 0) { 1144 warnx("No support for non local file URL `%s'", url); 1145 goto cleanup_fetch_url; 1146 } 1147 1148 if (EMPTYSTRING(ui.path)) { 1149 if (ui.utype == FTP_URL_T) { 1150 rval = fetch_ftp(url); 1151 goto cleanup_fetch_url; 1152 } 1153 if (!IS_HTTP_TYPE(ui.utype) || outfile == NULL) { 1154 warnx("Invalid URL (no file after host) `%s'", url); 1155 goto cleanup_fetch_url; 1156 } 1157 } 1158 1159 decodedpath = ftp_strdup(ui.path); 1160 url_decode(decodedpath); 1161 1162 if (outfile) 1163 savefile = outfile; 1164 else { 1165 cp = strrchr(decodedpath, '/'); /* find savefile */ 1166 if (cp != NULL) 1167 savefile = ftp_strdup(cp + 1); 1168 else 1169 savefile = ftp_strdup(decodedpath); 1170 } 1171 DPRINTF("%s: savefile `%s'\n", __func__, savefile); 1172 if (EMPTYSTRING(savefile)) { 1173 if (ui.utype == FTP_URL_T) { 1174 rval = fetch_ftp(url); 1175 goto cleanup_fetch_url; 1176 } 1177 warnx("No file after directory (you must specify an " 1178 "output file) `%s'", url); 1179 goto cleanup_fetch_url; 1180 } 1181 1182 restart_point = 0; 1183 filesize = -1; 1184 rangestart = rangeend = entitylen = -1; 1185 mtime = -1; 1186 if (restartautofetch) { 1187 if (stat(savefile, &sb) == 0) 1188 restart_point = sb.st_size; 1189 } 1190 if (ui.utype == FILE_URL_T) { /* file:// URLs */ 1191 direction = "copied"; 1192 fin = fetch_open(decodedpath, "r"); 1193 if (fin == NULL) { 1194 warn("Can't open `%s'", decodedpath); 1195 goto cleanup_fetch_url; 1196 } 1197 if (fstat(fetch_fileno(fin), &sb) == 0) { 1198 mtime = sb.st_mtime; 1199 filesize = sb.st_size; 1200 } 1201 if (restart_point) { 1202 if (lseek(fetch_fileno(fin), restart_point, SEEK_SET) < 0) { 1203 warn("Can't seek to restart `%s'", 1204 decodedpath); 1205 goto cleanup_fetch_url; 1206 } 1207 } 1208 if (verbose) { 1209 fprintf(ttyout, "Copying %s", decodedpath); 1210 if (restart_point) 1211 fprintf(ttyout, " (restarting at " LLF ")", 1212 (LLT)restart_point); 1213 fputs("\n", ttyout); 1214 } 1215 if (0 == rcvbuf_size) { 1216 rcvbuf_size = 8 * 1024; /* XXX */ 1217 } 1218 } else { /* ftp:// or http:// URLs */ 1219 const char *leading; 1220 int hasleading; 1221 1222 if (penv == NULL) { 1223 #ifdef WITH_SSL 1224 if (ui.utype == HTTPS_URL_T) 1225 penv = getoptionvalue("https_proxy"); 1226 #endif 1227 if (penv == NULL && IS_HTTP_TYPE(ui.utype)) 1228 penv = getoptionvalue("http_proxy"); 1229 else if (ui.utype == FTP_URL_T) 1230 penv = getoptionvalue("ftp_proxy"); 1231 } 1232 direction = "retrieved"; 1233 if (! EMPTYSTRING(penv)) { /* use proxy */ 1234 1235 isproxy = handle_noproxy(ui.host, ui.portnum); 1236 1237 if (isproxy == 0 && ui.utype == FTP_URL_T) { 1238 rval = fetch_ftp(url); 1239 goto cleanup_fetch_url; 1240 } 1241 1242 if (isproxy) { 1243 if (restart_point) { 1244 warnx( 1245 "Can't restart via proxy URL `%s'", 1246 penv); 1247 goto cleanup_fetch_url; 1248 } 1249 if (handle_proxy(url, penv, &ui, &pauth) < 0) 1250 goto cleanup_fetch_url; 1251 } 1252 } /* ! EMPTYSTRING(penv) */ 1253 1254 s = ftp_socket(&ui, &ssl); 1255 if (s < 0) { 1256 warnx("Can't connect to `%s:%s'", ui.host, ui.port); 1257 goto cleanup_fetch_url; 1258 } 1259 1260 oldalrm = xsignal(SIGALRM, timeouthttp); 1261 alarmtimer(quit_time ? quit_time : 60); 1262 fin = fetch_fdopen(s, "r+"); 1263 fetch_set_ssl(fin, ssl); 1264 alarmtimer(0); 1265 1266 alarmtimer(quit_time ? quit_time : 60); 1267 /* 1268 * Construct and send the request. 1269 */ 1270 if (verbose) 1271 fprintf(ttyout, "Requesting %s\n", url); 1272 1273 hasleading = print_get(fin, isproxy, &ui); 1274 if (hasleading) 1275 leading = ", "; 1276 else 1277 leading = " ("; 1278 1279 if (flushcache) 1280 print_cache(fin, isproxy); 1281 1282 print_agent(fin); 1283 hasleading = print_proxy(fin, leading, wauth.auth, pauth.auth); 1284 if (hasleading) { 1285 leading = ", "; 1286 if (verbose) 1287 fputs(")\n", ttyout); 1288 } 1289 1290 fetch_printf(fin, "\r\n"); 1291 if (fetch_flush(fin) == EOF) { 1292 warn("Writing HTTP request"); 1293 alarmtimer(0); 1294 goto cleanup_fetch_url; 1295 } 1296 alarmtimer(0); 1297 1298 switch (negotiate_connection(fin, url, penv, 1299 &rangestart, &rangeend, &entitylen, 1300 &mtime, &wauth, &pauth, &rval, &ischunked)) { 1301 case C_OK: 1302 break; 1303 case C_CLEANUP: 1304 goto cleanup_fetch_url; 1305 case C_IMPROPER: 1306 goto improper; 1307 default: 1308 abort(); 1309 } 1310 } 1311 1312 /* Open the output file. */ 1313 1314 /* 1315 * Only trust filenames with special meaning if they came from 1316 * the command line 1317 */ 1318 if (outfile == savefile) { 1319 if (strcmp(savefile, "-") == 0) { 1320 fout = stdout; 1321 } else if (*savefile == '|') { 1322 oldpipe = xsignal(SIGPIPE, SIG_IGN); 1323 fout = popen(savefile + 1, "w"); 1324 if (fout == NULL) { 1325 warn("Can't execute `%s'", savefile + 1); 1326 goto cleanup_fetch_url; 1327 } 1328 closefunc = pclose; 1329 } 1330 } 1331 if (fout == NULL) { 1332 if ((rangeend != -1 && rangeend <= restart_point) || 1333 (rangestart == -1 && filesize != -1 && filesize <= restart_point)) { 1334 /* already done */ 1335 if (verbose) 1336 fprintf(ttyout, "already done\n"); 1337 rval = 0; 1338 goto cleanup_fetch_url; 1339 } 1340 if (restart_point && rangestart != -1) { 1341 if (entitylen != -1) 1342 filesize = entitylen; 1343 if (rangestart != restart_point) { 1344 warnx( 1345 "Size of `%s' differs from save file `%s'", 1346 url, savefile); 1347 goto cleanup_fetch_url; 1348 } 1349 fout = fopen(savefile, "a"); 1350 } else 1351 fout = fopen(savefile, "w"); 1352 if (fout == NULL) { 1353 warn("Can't open `%s'", savefile); 1354 goto cleanup_fetch_url; 1355 } 1356 closefunc = fclose; 1357 } 1358 1359 /* Trap signals */ 1360 oldquit = xsignal(SIGQUIT, psummary); 1361 oldint = xsignal(SIGINT, aborthttp); 1362 1363 assert(rcvbuf_size > 0); 1364 if ((size_t)rcvbuf_size > bufsize) { 1365 if (xferbuf) 1366 (void)free(xferbuf); 1367 bufsize = rcvbuf_size; 1368 xferbuf = ftp_malloc(bufsize); 1369 } 1370 1371 bytes = 0; 1372 hashbytes = mark; 1373 if (oldalrm) { 1374 (void)xsignal(SIGALRM, oldalrm); 1375 oldalrm = NULL; 1376 } 1377 progressmeter(-1); 1378 1379 /* Finally, suck down the file. */ 1380 do { 1381 long chunksize; 1382 short lastchunk; 1383 1384 chunksize = 0; 1385 lastchunk = 0; 1386 /* read chunk-size */ 1387 if (ischunked) { 1388 if (fetch_getln(xferbuf, bufsize, fin) == NULL) { 1389 warnx("Unexpected EOF reading chunk-size"); 1390 goto cleanup_fetch_url; 1391 } 1392 errno = 0; 1393 chunksize = strtol(xferbuf, &ep, 16); 1394 if (ep == xferbuf) { 1395 warnx("Invalid chunk-size"); 1396 goto cleanup_fetch_url; 1397 } 1398 if (errno == ERANGE || chunksize < 0) { 1399 errno = ERANGE; 1400 warn("Chunk-size `%.*s'", 1401 (int)(ep-xferbuf), xferbuf); 1402 goto cleanup_fetch_url; 1403 } 1404 1405 /* 1406 * XXX: Work around bug in Apache 1.3.9 and 1407 * 1.3.11, which incorrectly put trailing 1408 * space after the chunk-size. 1409 */ 1410 while (*ep == ' ') 1411 ep++; 1412 1413 /* skip [ chunk-ext ] */ 1414 if (*ep == ';') { 1415 while (*ep && *ep != '\r') 1416 ep++; 1417 } 1418 1419 if (strcmp(ep, "\r\n") != 0) { 1420 warnx("Unexpected data following chunk-size"); 1421 goto cleanup_fetch_url; 1422 } 1423 DPRINTF("%s: got chunk-size of " LLF "\n", __func__, 1424 (LLT)chunksize); 1425 if (chunksize == 0) { 1426 lastchunk = 1; 1427 goto chunkdone; 1428 } 1429 } 1430 /* transfer file or chunk */ 1431 while (1) { 1432 struct timeval then, now, td; 1433 volatile off_t bufrem; 1434 1435 if (rate_get) 1436 (void)gettimeofday(&then, NULL); 1437 bufrem = rate_get ? rate_get : (off_t)bufsize; 1438 if (ischunked) 1439 bufrem = MIN(chunksize, bufrem); 1440 while (bufrem > 0) { 1441 flen = fetch_read(xferbuf, sizeof(char), 1442 MIN((off_t)bufsize, bufrem), fin); 1443 if (flen <= 0) 1444 goto chunkdone; 1445 bytes += flen; 1446 bufrem -= flen; 1447 if (fwrite(xferbuf, sizeof(char), flen, fout) 1448 != flen) { 1449 warn("Writing `%s'", savefile); 1450 goto cleanup_fetch_url; 1451 } 1452 if (hash && !progress) { 1453 while (bytes >= hashbytes) { 1454 (void)putc('#', ttyout); 1455 hashbytes += mark; 1456 } 1457 (void)fflush(ttyout); 1458 } 1459 if (ischunked) { 1460 chunksize -= flen; 1461 if (chunksize <= 0) 1462 break; 1463 } 1464 } 1465 if (rate_get) { 1466 while (1) { 1467 (void)gettimeofday(&now, NULL); 1468 timersub(&now, &then, &td); 1469 if (td.tv_sec > 0) 1470 break; 1471 usleep(1000000 - td.tv_usec); 1472 } 1473 } 1474 if (ischunked && chunksize <= 0) 1475 break; 1476 } 1477 /* read CRLF after chunk*/ 1478 chunkdone: 1479 if (ischunked) { 1480 if (fetch_getln(xferbuf, bufsize, fin) == NULL) { 1481 alarmtimer(0); 1482 warnx("Unexpected EOF reading chunk CRLF"); 1483 goto cleanup_fetch_url; 1484 } 1485 if (strcmp(xferbuf, "\r\n") != 0) { 1486 warnx("Unexpected data following chunk"); 1487 goto cleanup_fetch_url; 1488 } 1489 if (lastchunk) 1490 break; 1491 } 1492 } while (ischunked); 1493 1494 /* XXX: deal with optional trailer & CRLF here? */ 1495 1496 if (hash && !progress && bytes > 0) { 1497 if (bytes < mark) 1498 (void)putc('#', ttyout); 1499 (void)putc('\n', ttyout); 1500 } 1501 if (fetch_error(fin)) { 1502 warn("Reading file"); 1503 goto cleanup_fetch_url; 1504 } 1505 progressmeter(1); 1506 (void)fflush(fout); 1507 if (closefunc == fclose && mtime != -1) { 1508 struct timeval tval[2]; 1509 1510 (void)gettimeofday(&tval[0], NULL); 1511 tval[1].tv_sec = mtime; 1512 tval[1].tv_usec = 0; 1513 (*closefunc)(fout); 1514 fout = NULL; 1515 1516 if (utimes(savefile, tval) == -1) { 1517 fprintf(ttyout, 1518 "Can't change modification time to %s", 1519 rfc2822time(localtime(&mtime))); 1520 } 1521 } 1522 if (bytes > 0) 1523 ptransfer(0); 1524 bytes = 0; 1525 1526 rval = 0; 1527 goto cleanup_fetch_url; 1528 1529 improper: 1530 warnx("Improper response from `%s:%s'", ui.host, ui.port); 1531 1532 cleanup_fetch_url: 1533 if (oldint) 1534 (void)xsignal(SIGINT, oldint); 1535 if (oldpipe) 1536 (void)xsignal(SIGPIPE, oldpipe); 1537 if (oldalrm) 1538 (void)xsignal(SIGALRM, oldalrm); 1539 if (oldquit) 1540 (void)xsignal(SIGQUIT, oldpipe); 1541 if (fin != NULL) 1542 fetch_close(fin); 1543 else if (s != -1) 1544 close(s); 1545 if (closefunc != NULL && fout != NULL) 1546 (*closefunc)(fout); 1547 if (savefile != outfile) 1548 FREEPTR(savefile); 1549 freeurlinfo(&ui); 1550 freeauthinfo(&wauth); 1551 freeauthinfo(&pauth); 1552 FREEPTR(decodedpath); 1553 FREEPTR(auth); 1554 FREEPTR(location); 1555 FREEPTR(message); 1556 return (rval); 1557 } 1558 1559 /* 1560 * Abort a HTTP retrieval 1561 */ 1562 static void 1563 aborthttp(int notused) 1564 { 1565 char msgbuf[100]; 1566 int len; 1567 1568 sigint_raised = 1; 1569 alarmtimer(0); 1570 if (fromatty) { 1571 len = snprintf(msgbuf, sizeof(msgbuf), 1572 "\n%s: HTTP fetch aborted.\n", getprogname()); 1573 if (len > 0) 1574 write(fileno(ttyout), msgbuf, len); 1575 } 1576 siglongjmp(httpabort, 1); 1577 } 1578 1579 static void 1580 timeouthttp(int notused) 1581 { 1582 char msgbuf[100]; 1583 int len; 1584 1585 alarmtimer(0); 1586 if (fromatty) { 1587 len = snprintf(msgbuf, sizeof(msgbuf), 1588 "\n%s: HTTP fetch timeout.\n", getprogname()); 1589 if (len > 0) 1590 write(fileno(ttyout), msgbuf, len); 1591 } 1592 siglongjmp(httpabort, 1); 1593 } 1594 1595 /* 1596 * Retrieve ftp URL or classic ftp argument using FTP. 1597 * Returns 1 on failure, 0 on completed xfer, -1 if ftp connection 1598 * is still open (e.g, ftp xfer with trailing /) 1599 */ 1600 static int 1601 fetch_ftp(const char *url) 1602 { 1603 char *cp, *xargv[5], rempath[MAXPATHLEN]; 1604 char *dir, *file; 1605 char cmdbuf[MAXPATHLEN]; 1606 char dirbuf[4]; 1607 int dirhasglob, filehasglob, rval, transtype, xargc; 1608 int oanonftp, oautologin; 1609 struct authinfo auth; 1610 struct urlinfo ui; 1611 1612 DPRINTF("fetch_ftp: `%s'\n", url); 1613 dir = file = NULL; 1614 rval = 1; 1615 transtype = TYPE_I; 1616 1617 initurlinfo(&ui); 1618 initauthinfo(&auth, NULL); 1619 1620 if (STRNEQUAL(url, FTP_URL)) { 1621 if ((parse_url(url, "URL", &ui, &auth) == -1) || 1622 (auth.user != NULL && *auth.user == '\0') || 1623 EMPTYSTRING(ui.host)) { 1624 warnx("Invalid URL `%s'", url); 1625 goto cleanup_fetch_ftp; 1626 } 1627 /* 1628 * Note: Don't url_decode(path) here. We need to keep the 1629 * distinction between "/" and "%2F" until later. 1630 */ 1631 1632 /* check for trailing ';type=[aid]' */ 1633 if (! EMPTYSTRING(ui.path) && (cp = strrchr(ui.path, ';')) != NULL) { 1634 if (strcasecmp(cp, ";type=a") == 0) 1635 transtype = TYPE_A; 1636 else if (strcasecmp(cp, ";type=i") == 0) 1637 transtype = TYPE_I; 1638 else if (strcasecmp(cp, ";type=d") == 0) { 1639 warnx( 1640 "Directory listing via a URL is not supported"); 1641 goto cleanup_fetch_ftp; 1642 } else { 1643 warnx("Invalid suffix `%s' in URL `%s'", cp, 1644 url); 1645 goto cleanup_fetch_ftp; 1646 } 1647 *cp = 0; 1648 } 1649 } else { /* classic style `[user@]host:[file]' */ 1650 ui.utype = CLASSIC_URL_T; 1651 ui.host = ftp_strdup(url); 1652 cp = strchr(ui.host, '@'); 1653 if (cp != NULL) { 1654 *cp = '\0'; 1655 auth.user = ui.host; 1656 anonftp = 0; /* disable anonftp */ 1657 ui.host = ftp_strdup(cp + 1); 1658 } 1659 cp = strchr(ui.host, ':'); 1660 if (cp != NULL) { 1661 *cp = '\0'; 1662 ui.path = ftp_strdup(cp + 1); 1663 } 1664 } 1665 if (EMPTYSTRING(ui.host)) 1666 goto cleanup_fetch_ftp; 1667 1668 /* Extract the file and (if present) directory name. */ 1669 dir = ui.path; 1670 if (! EMPTYSTRING(dir)) { 1671 /* 1672 * If we are dealing with classic `[user@]host:[path]' syntax, 1673 * then a path of the form `/file' (resulting from input of the 1674 * form `host:/file') means that we should do "CWD /" before 1675 * retrieving the file. So we set dir="/" and file="file". 1676 * 1677 * But if we are dealing with URLs like `ftp://host/path' then 1678 * a path of the form `/file' (resulting from a URL of the form 1679 * `ftp://host//file') means that we should do `CWD ' (with an 1680 * empty argument) before retrieving the file. So we set 1681 * dir="" and file="file". 1682 * 1683 * If the path does not contain / at all, we set dir=NULL. 1684 * (We get a path without any slashes if we are dealing with 1685 * classic `[user@]host:[file]' or URL `ftp://host/file'.) 1686 * 1687 * In all other cases, we set dir to a string that does not 1688 * include the final '/' that separates the dir part from the 1689 * file part of the path. (This will be the empty string if 1690 * and only if we are dealing with a path of the form `/file' 1691 * resulting from an URL of the form `ftp://host//file'.) 1692 */ 1693 cp = strrchr(dir, '/'); 1694 if (cp == dir && ui.utype == CLASSIC_URL_T) { 1695 file = cp + 1; 1696 (void)strlcpy(dirbuf, "/", sizeof(dirbuf)); 1697 dir = dirbuf; 1698 } else if (cp != NULL) { 1699 *cp++ = '\0'; 1700 file = cp; 1701 } else { 1702 file = dir; 1703 dir = NULL; 1704 } 1705 } else 1706 dir = NULL; 1707 if (ui.utype == FTP_URL_T && file != NULL) { 1708 url_decode(file); 1709 /* but still don't url_decode(dir) */ 1710 } 1711 DPRINTF("fetch_ftp: user `%s' pass `%s' host %s port %s " 1712 "path `%s' dir `%s' file `%s'\n", 1713 STRorNULL(auth.user), STRorNULL(auth.pass), 1714 STRorNULL(ui.host), STRorNULL(ui.port), 1715 STRorNULL(ui.path), STRorNULL(dir), STRorNULL(file)); 1716 1717 dirhasglob = filehasglob = 0; 1718 if (doglob && ui.utype == CLASSIC_URL_T) { 1719 if (! EMPTYSTRING(dir) && strpbrk(dir, "*?[]{}") != NULL) 1720 dirhasglob = 1; 1721 if (! EMPTYSTRING(file) && strpbrk(file, "*?[]{}") != NULL) 1722 filehasglob = 1; 1723 } 1724 1725 /* Set up the connection */ 1726 oanonftp = anonftp; 1727 if (connected) 1728 disconnect(0, NULL); 1729 anonftp = oanonftp; 1730 (void)strlcpy(cmdbuf, getprogname(), sizeof(cmdbuf)); 1731 xargv[0] = cmdbuf; 1732 xargv[1] = ui.host; 1733 xargv[2] = NULL; 1734 xargc = 2; 1735 if (ui.port) { 1736 xargv[2] = ui.port; 1737 xargv[3] = NULL; 1738 xargc = 3; 1739 } 1740 oautologin = autologin; 1741 /* don't autologin in setpeer(), use ftp_login() below */ 1742 autologin = 0; 1743 setpeer(xargc, xargv); 1744 autologin = oautologin; 1745 if ((connected == 0) || 1746 (connected == 1 && !ftp_login(ui.host, auth.user, auth.pass))) { 1747 warnx("Can't connect or login to host `%s:%s'", 1748 ui.host, ui.port ? ui.port : "?"); 1749 goto cleanup_fetch_ftp; 1750 } 1751 1752 switch (transtype) { 1753 case TYPE_A: 1754 setascii(1, xargv); 1755 break; 1756 case TYPE_I: 1757 setbinary(1, xargv); 1758 break; 1759 default: 1760 errx(1, "fetch_ftp: unknown transfer type %d", transtype); 1761 } 1762 1763 /* 1764 * Change directories, if necessary. 1765 * 1766 * Note: don't use EMPTYSTRING(dir) below, because 1767 * dir=="" means something different from dir==NULL. 1768 */ 1769 if (dir != NULL && !dirhasglob) { 1770 char *nextpart; 1771 1772 /* 1773 * If we are dealing with a classic `[user@]host:[path]' 1774 * (urltype is CLASSIC_URL_T) then we have a raw directory 1775 * name (not encoded in any way) and we can change 1776 * directories in one step. 1777 * 1778 * If we are dealing with an `ftp://host/path' URL 1779 * (urltype is FTP_URL_T), then RFC 3986 says we need to 1780 * send a separate CWD command for each unescaped "/" 1781 * in the path, and we have to interpret %hex escaping 1782 * *after* we find the slashes. It's possible to get 1783 * empty components here, (from multiple adjacent 1784 * slashes in the path) and RFC 3986 says that we should 1785 * still do `CWD ' (with a null argument) in such cases. 1786 * 1787 * Many ftp servers don't support `CWD ', so if there's an 1788 * error performing that command, bail out with a descriptive 1789 * message. 1790 * 1791 * Examples: 1792 * 1793 * host: dir="", urltype=CLASSIC_URL_T 1794 * logged in (to default directory) 1795 * host:file dir=NULL, urltype=CLASSIC_URL_T 1796 * "RETR file" 1797 * host:dir/ dir="dir", urltype=CLASSIC_URL_T 1798 * "CWD dir", logged in 1799 * ftp://host/ dir="", urltype=FTP_URL_T 1800 * logged in (to default directory) 1801 * ftp://host/dir/ dir="dir", urltype=FTP_URL_T 1802 * "CWD dir", logged in 1803 * ftp://host/file dir=NULL, urltype=FTP_URL_T 1804 * "RETR file" 1805 * ftp://host//file dir="", urltype=FTP_URL_T 1806 * "CWD ", "RETR file" 1807 * host:/file dir="/", urltype=CLASSIC_URL_T 1808 * "CWD /", "RETR file" 1809 * ftp://host///file dir="/", urltype=FTP_URL_T 1810 * "CWD ", "CWD ", "RETR file" 1811 * ftp://host/%2F/file dir="%2F", urltype=FTP_URL_T 1812 * "CWD /", "RETR file" 1813 * ftp://host/foo/file dir="foo", urltype=FTP_URL_T 1814 * "CWD foo", "RETR file" 1815 * ftp://host/foo/bar/file dir="foo/bar" 1816 * "CWD foo", "CWD bar", "RETR file" 1817 * ftp://host//foo/bar/file dir="/foo/bar" 1818 * "CWD ", "CWD foo", "CWD bar", "RETR file" 1819 * ftp://host/foo//bar/file dir="foo//bar" 1820 * "CWD foo", "CWD ", "CWD bar", "RETR file" 1821 * ftp://host/%2F/foo/bar/file dir="%2F/foo/bar" 1822 * "CWD /", "CWD foo", "CWD bar", "RETR file" 1823 * ftp://host/%2Ffoo/bar/file dir="%2Ffoo/bar" 1824 * "CWD /foo", "CWD bar", "RETR file" 1825 * ftp://host/%2Ffoo%2Fbar/file dir="%2Ffoo%2Fbar" 1826 * "CWD /foo/bar", "RETR file" 1827 * ftp://host/%2Ffoo%2Fbar%2Ffile dir=NULL 1828 * "RETR /foo/bar/file" 1829 * 1830 * Note that we don't need `dir' after this point. 1831 */ 1832 do { 1833 if (ui.utype == FTP_URL_T) { 1834 nextpart = strchr(dir, '/'); 1835 if (nextpart) { 1836 *nextpart = '\0'; 1837 nextpart++; 1838 } 1839 url_decode(dir); 1840 } else 1841 nextpart = NULL; 1842 DPRINTF("fetch_ftp: dir `%s', nextpart `%s'\n", 1843 STRorNULL(dir), STRorNULL(nextpart)); 1844 if (ui.utype == FTP_URL_T || *dir != '\0') { 1845 (void)strlcpy(cmdbuf, "cd", sizeof(cmdbuf)); 1846 xargv[0] = cmdbuf; 1847 xargv[1] = dir; 1848 xargv[2] = NULL; 1849 dirchange = 0; 1850 cd(2, xargv); 1851 if (! dirchange) { 1852 if (*dir == '\0' && code == 500) 1853 fprintf(stderr, 1854 "\n" 1855 "ftp: The `CWD ' command (without a directory), which is required by\n" 1856 " RFC 3986 to support the empty directory in the URL pathname (`//'),\n" 1857 " conflicts with the server's conformance to RFC 959.\n" 1858 " Try the same URL without the `//' in the URL pathname.\n" 1859 "\n"); 1860 goto cleanup_fetch_ftp; 1861 } 1862 } 1863 dir = nextpart; 1864 } while (dir != NULL); 1865 } 1866 1867 if (EMPTYSTRING(file)) { 1868 rval = -1; 1869 goto cleanup_fetch_ftp; 1870 } 1871 1872 if (dirhasglob) { 1873 (void)strlcpy(rempath, dir, sizeof(rempath)); 1874 (void)strlcat(rempath, "/", sizeof(rempath)); 1875 (void)strlcat(rempath, file, sizeof(rempath)); 1876 file = rempath; 1877 } 1878 1879 /* Fetch the file(s). */ 1880 xargc = 2; 1881 (void)strlcpy(cmdbuf, "get", sizeof(cmdbuf)); 1882 xargv[0] = cmdbuf; 1883 xargv[1] = file; 1884 xargv[2] = NULL; 1885 if (dirhasglob || filehasglob) { 1886 int ointeractive; 1887 1888 ointeractive = interactive; 1889 interactive = 0; 1890 if (restartautofetch) 1891 (void)strlcpy(cmdbuf, "mreget", sizeof(cmdbuf)); 1892 else 1893 (void)strlcpy(cmdbuf, "mget", sizeof(cmdbuf)); 1894 xargv[0] = cmdbuf; 1895 mget(xargc, xargv); 1896 interactive = ointeractive; 1897 } else { 1898 if (outfile == NULL) { 1899 cp = strrchr(file, '/'); /* find savefile */ 1900 if (cp != NULL) 1901 outfile = cp + 1; 1902 else 1903 outfile = file; 1904 } 1905 xargv[2] = (char *)outfile; 1906 xargv[3] = NULL; 1907 xargc++; 1908 if (restartautofetch) 1909 reget(xargc, xargv); 1910 else 1911 get(xargc, xargv); 1912 } 1913 1914 if ((code / 100) == COMPLETE) 1915 rval = 0; 1916 1917 cleanup_fetch_ftp: 1918 freeurlinfo(&ui); 1919 freeauthinfo(&auth); 1920 return (rval); 1921 } 1922 1923 /* 1924 * Retrieve the given file to outfile. 1925 * Supports arguments of the form: 1926 * "host:path", "ftp://host/path" if $ftpproxy, call fetch_url() else 1927 * call fetch_ftp() 1928 * "http://host/path" call fetch_url() to use HTTP 1929 * "file:///path" call fetch_url() to copy 1930 * "about:..." print a message 1931 * 1932 * Returns 1 on failure, 0 on completed xfer, -1 if ftp connection 1933 * is still open (e.g, ftp xfer with trailing /) 1934 */ 1935 static int 1936 go_fetch(const char *url) 1937 { 1938 char *proxyenv; 1939 char *p; 1940 1941 #ifndef NO_ABOUT 1942 /* 1943 * Check for about:* 1944 */ 1945 if (STRNEQUAL(url, ABOUT_URL)) { 1946 url += sizeof(ABOUT_URL) -1; 1947 if (strcasecmp(url, "ftp") == 0 || 1948 strcasecmp(url, "tnftp") == 0) { 1949 fputs( 1950 "This version of ftp has been enhanced by Luke Mewburn <lukem@NetBSD.org>\n" 1951 "for the NetBSD project. Execute `man ftp' for more details.\n", ttyout); 1952 } else if (strcasecmp(url, "lukem") == 0) { 1953 fputs( 1954 "Luke Mewburn is the author of most of the enhancements in this ftp client.\n" 1955 "Please email feedback to <lukem@NetBSD.org>.\n", ttyout); 1956 } else if (strcasecmp(url, "netbsd") == 0) { 1957 fputs( 1958 "NetBSD is a freely available and redistributable UNIX-like operating system.\n" 1959 "For more information, see http://www.NetBSD.org/\n", ttyout); 1960 } else if (strcasecmp(url, "version") == 0) { 1961 fprintf(ttyout, "Version: %s %s%s\n", 1962 FTP_PRODUCT, FTP_VERSION, 1963 #ifdef INET6 1964 "" 1965 #else 1966 " (-IPv6)" 1967 #endif 1968 ); 1969 } else { 1970 fprintf(ttyout, "`%s' is an interesting topic.\n", url); 1971 } 1972 fputs("\n", ttyout); 1973 return (0); 1974 } 1975 #endif 1976 1977 /* 1978 * Check for file:// and http:// URLs. 1979 */ 1980 if (STRNEQUAL(url, HTTP_URL) 1981 #ifdef WITH_SSL 1982 || STRNEQUAL(url, HTTPS_URL) 1983 #endif 1984 || STRNEQUAL(url, FILE_URL)) 1985 return (fetch_url(url, NULL, NULL, NULL)); 1986 1987 /* 1988 * If it contains "://" but does not begin with ftp:// 1989 * or something that was already handled, then it's 1990 * unsupported. 1991 * 1992 * If it contains ":" but not "://" then we assume the 1993 * part before the colon is a host name, not an URL scheme, 1994 * so we don't try to match that here. 1995 */ 1996 if ((p = strstr(url, "://")) != NULL && ! STRNEQUAL(url, FTP_URL)) 1997 errx(1, "Unsupported URL scheme `%.*s'", (int)(p - url), url); 1998 1999 /* 2000 * Try FTP URL-style and host:file arguments next. 2001 * If ftpproxy is set with an FTP URL, use fetch_url() 2002 * Othewise, use fetch_ftp(). 2003 */ 2004 proxyenv = getoptionvalue("ftp_proxy"); 2005 if (!EMPTYSTRING(proxyenv) && STRNEQUAL(url, FTP_URL)) 2006 return (fetch_url(url, NULL, NULL, NULL)); 2007 2008 return (fetch_ftp(url)); 2009 } 2010 2011 /* 2012 * Retrieve multiple files from the command line, 2013 * calling go_fetch() for each file. 2014 * 2015 * If an ftp path has a trailing "/", the path will be cd-ed into and 2016 * the connection remains open, and the function will return -1 2017 * (to indicate the connection is alive). 2018 * If an error occurs the return value will be the offset+1 in 2019 * argv[] of the file that caused a problem (i.e, argv[x] 2020 * returns x+1) 2021 * Otherwise, 0 is returned if all files retrieved successfully. 2022 */ 2023 int 2024 auto_fetch(int argc, char *argv[]) 2025 { 2026 volatile int argpos, rval; 2027 2028 argpos = rval = 0; 2029 2030 if (sigsetjmp(toplevel, 1)) { 2031 if (connected) 2032 disconnect(0, NULL); 2033 if (rval > 0) 2034 rval = argpos + 1; 2035 return (rval); 2036 } 2037 (void)xsignal(SIGINT, intr); 2038 (void)xsignal(SIGPIPE, lostpeer); 2039 2040 /* 2041 * Loop through as long as there's files to fetch. 2042 */ 2043 for (; (rval == 0) && (argpos < argc); argpos++) { 2044 if (strchr(argv[argpos], ':') == NULL) 2045 break; 2046 redirect_loop = 0; 2047 if (!anonftp) 2048 anonftp = 2; /* Handle "automatic" transfers. */ 2049 rval = go_fetch(argv[argpos]); 2050 if (outfile != NULL && strcmp(outfile, "-") != 0 2051 && outfile[0] != '|') 2052 outfile = NULL; 2053 if (rval > 0) 2054 rval = argpos + 1; 2055 } 2056 2057 if (connected && rval != -1) 2058 disconnect(0, NULL); 2059 return (rval); 2060 } 2061 2062 2063 /* 2064 * Upload multiple files from the command line. 2065 * 2066 * If an error occurs the return value will be the offset+1 in 2067 * argv[] of the file that caused a problem (i.e, argv[x] 2068 * returns x+1) 2069 * Otherwise, 0 is returned if all files uploaded successfully. 2070 */ 2071 int 2072 auto_put(int argc, char **argv, const char *uploadserver) 2073 { 2074 char *uargv[4], *path, *pathsep; 2075 int uargc, rval, argpos; 2076 size_t len; 2077 char cmdbuf[MAX_C_NAME]; 2078 2079 (void)strlcpy(cmdbuf, "mput", sizeof(cmdbuf)); 2080 uargv[0] = cmdbuf; 2081 uargv[1] = argv[0]; 2082 uargc = 2; 2083 uargv[2] = uargv[3] = NULL; 2084 pathsep = NULL; 2085 rval = 1; 2086 2087 DPRINTF("auto_put: target `%s'\n", uploadserver); 2088 2089 path = ftp_strdup(uploadserver); 2090 len = strlen(path); 2091 if (path[len - 1] != '/' && path[len - 1] != ':') { 2092 /* 2093 * make sure we always pass a directory to auto_fetch 2094 */ 2095 if (argc > 1) { /* more than one file to upload */ 2096 len = strlen(uploadserver) + 2; /* path + "/" + "\0" */ 2097 free(path); 2098 path = (char *)ftp_malloc(len); 2099 (void)strlcpy(path, uploadserver, len); 2100 (void)strlcat(path, "/", len); 2101 } else { /* single file to upload */ 2102 (void)strlcpy(cmdbuf, "put", sizeof(cmdbuf)); 2103 uargv[0] = cmdbuf; 2104 pathsep = strrchr(path, '/'); 2105 if (pathsep == NULL) { 2106 pathsep = strrchr(path, ':'); 2107 if (pathsep == NULL) { 2108 warnx("Invalid URL `%s'", path); 2109 goto cleanup_auto_put; 2110 } 2111 pathsep++; 2112 uargv[2] = ftp_strdup(pathsep); 2113 pathsep[0] = '/'; 2114 } else 2115 uargv[2] = ftp_strdup(pathsep + 1); 2116 pathsep[1] = '\0'; 2117 uargc++; 2118 } 2119 } 2120 DPRINTF("auto_put: URL `%s' argv[2] `%s'\n", 2121 path, STRorNULL(uargv[2])); 2122 2123 /* connect and cwd */ 2124 rval = auto_fetch(1, &path); 2125 if(rval >= 0) 2126 goto cleanup_auto_put; 2127 2128 rval = 0; 2129 2130 /* target filename provided; upload 1 file */ 2131 /* XXX : is this the best way? */ 2132 if (uargc == 3) { 2133 uargv[1] = argv[0]; 2134 put(uargc, uargv); 2135 if ((code / 100) != COMPLETE) 2136 rval = 1; 2137 } else { /* otherwise a target dir: upload all files to it */ 2138 for(argpos = 0; argv[argpos] != NULL; argpos++) { 2139 uargv[1] = argv[argpos]; 2140 mput(uargc, uargv); 2141 if ((code / 100) != COMPLETE) { 2142 rval = argpos + 1; 2143 break; 2144 } 2145 } 2146 } 2147 2148 cleanup_auto_put: 2149 free(path); 2150 FREEPTR(uargv[2]); 2151 return (rval); 2152 } 2153