1 /* File Transfer Protocol support.
2 Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
3 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
5 This file is part of GNU Wget.
7 GNU Wget is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 GNU Wget is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with Wget. If not, see <http://www.gnu.org/licenses/>.
20 Additional permission under GNU GPL version 3 section 7
22 If you modify this program, or any covered work, by linking or
23 combining it with the OpenSSL project's OpenSSL library (or a
24 modified version of that library), containing parts covered by the
25 terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
26 grants you additional permission to convey the resulting work.
27 Corresponding Source for a non-source form of such a combination
28 shall include the source code for the parts of OpenSSL used as well
29 as that of the covered work. */
51 #include "convert.h" /* for downloaded_file */
52 #include "recur.h" /* for INFINITE_RECURSION */
56 #endif /* def __VMS */
59 /* File where the "ls -al" listing will be saved. */
61 #define LIST_FILENAME "_listing"
63 #define LIST_FILENAME ".listing"
68 int st; /* connection status */
69 int cmd; /* command code */
70 int csock; /* control connection socket */
71 double dltime; /* time of the download in msecs */
72 enum stype rs; /* remote system reported by ftp server */
73 char *id; /* initial directory */
74 char *target; /* target file name */
75 struct url *proxy; /* FTWK-style proxy */
80 /* Look for regexp "( *[0-9]+ *byte" (literal parenthesis) anywhere in
81 the string S, and return the number converted to wgint, if found, 0
84 ftp_expected_bytes (const char *s)
90 while (*s && *s != '(')
94 ++s; /* skip the '(' */
95 res = str_to_wgint (s, (char **) &s, 10);
98 while (*s && c_isspace (*s))
102 if (c_tolower (*s) != 'b')
104 if (strncasecmp (s, "byte", 4))
114 * This function sets up a passive data connection with the FTP server.
115 * It is merely a wrapper around ftp_epsv, ftp_lpsv and ftp_pasv.
118 ftp_do_pasv (int csock, ip_address *addr, int *port)
122 /* We need to determine the address family and need to call
123 getpeername, so while we're at it, store the address to ADDR.
124 ftp_pasv and ftp_lpsv can simply override it. */
125 if (!socket_ip_address (csock, addr, ENDPOINT_PEER))
128 /* If our control connection is over IPv6, then we first try EPSV and then
129 * LPSV if the former is not supported. If the control connection is over
130 * IPv4, we simply issue the good old PASV request. */
131 switch (addr->family)
134 if (!opt.server_response)
135 logputs (LOG_VERBOSE, "==> PASV ... ");
136 err = ftp_pasv (csock, addr, port);
139 if (!opt.server_response)
140 logputs (LOG_VERBOSE, "==> EPSV ... ");
141 err = ftp_epsv (csock, addr, port);
143 /* If EPSV is not supported try LPSV */
144 if (err == FTPNOPASV)
146 if (!opt.server_response)
147 logputs (LOG_VERBOSE, "==> LPSV ... ");
148 err = ftp_lpsv (csock, addr, port);
159 * This function sets up an active data connection with the FTP server.
160 * It is merely a wrapper around ftp_eprt, ftp_lprt and ftp_port.
163 ftp_do_port (int csock, int *local_sock)
168 if (!socket_ip_address (csock, &cip, ENDPOINT_PEER))
171 /* If our control connection is over IPv6, then we first try EPRT and then
172 * LPRT if the former is not supported. If the control connection is over
173 * IPv4, we simply issue the good old PORT request. */
177 if (!opt.server_response)
178 logputs (LOG_VERBOSE, "==> PORT ... ");
179 err = ftp_port (csock, local_sock);
182 if (!opt.server_response)
183 logputs (LOG_VERBOSE, "==> EPRT ... ");
184 err = ftp_eprt (csock, local_sock);
186 /* If EPRT is not supported try LPRT */
187 if (err == FTPPORTERR)
189 if (!opt.server_response)
190 logputs (LOG_VERBOSE, "==> LPRT ... ");
191 err = ftp_lprt (csock, local_sock);
202 ftp_do_pasv (int csock, ip_address *addr, int *port)
204 if (!opt.server_response)
205 logputs (LOG_VERBOSE, "==> PASV ... ");
206 return ftp_pasv (csock, addr, port);
210 ftp_do_port (int csock, int *local_sock)
212 if (!opt.server_response)
213 logputs (LOG_VERBOSE, "==> PORT ... ");
214 return ftp_port (csock, local_sock);
219 print_length (wgint size, wgint start, bool authoritative)
221 logprintf (LOG_VERBOSE, _("Length: %s"), number_to_static_string (size));
223 logprintf (LOG_VERBOSE, " (%s)", human_readable (size));
226 if (size - start >= 1024)
227 logprintf (LOG_VERBOSE, _(", %s (%s) remaining"),
228 number_to_static_string (size - start),
229 human_readable (size - start));
231 logprintf (LOG_VERBOSE, _(", %s remaining"),
232 number_to_static_string (size - start));
234 logputs (LOG_VERBOSE, !authoritative ? _(" (unauthoritative)\n") : "\n");
237 static uerr_t ftp_get_listing (struct url *, ccon *, struct fileinfo **);
239 /* Retrieves a file with denoted parameters through opening an FTP
240 connection to the server. It always closes the data connection,
241 and closes the control connection in case of error. */
243 getftp (struct url *u, wgint passed_expected_bytes, wgint *qtyread,
244 wgint restval, ccon *con)
246 int csock, dtsock, local_sock, res;
247 uerr_t err = RETROK; /* appease the compiler */
249 char *user, *passwd, *respline;
253 bool pasv_mode_open = false;
254 wgint expected_bytes = 0;
255 bool got_expected_bytes = false;
256 bool rest_failed = false;
261 assert (con != NULL);
262 assert (con->target != NULL);
264 /* Debug-check of the sanity of the request by making sure that LIST
265 and RETR are never both requested (since we can handle only one
267 assert (!((cmd & DO_LIST) && (cmd & DO_RETR)));
268 /* Make sure that at least *something* is requested. */
269 assert ((cmd & (DO_LIST | DO_CWD | DO_RETR | DO_LOGIN)) != 0);
275 search_netrc (u->host, (const char **)&user, (const char **)&passwd, 1);
276 user = user ? user : (opt.ftp_user ? opt.ftp_user : opt.user);
277 if (!user) user = "anonymous";
278 passwd = passwd ? passwd : (opt.ftp_passwd ? opt.ftp_passwd : opt.passwd);
279 if (!passwd) passwd = "-wget@";
285 if (!(cmd & DO_LOGIN))
287 else /* cmd & DO_LOGIN */
289 char *host = con->proxy ? con->proxy->host : u->host;
290 int port = con->proxy ? con->proxy->port : u->port;
291 char *logname = user;
295 /* If proxy is in use, log in as username@target-site. */
296 logname = concat_strings (user, "@", u->host, (char *) 0);
299 /* Login to the server: */
301 /* First: Establish the control connection. */
303 csock = connect_to_host (host, port);
307 return (retryable_socket_connect_error (errno)
308 ? CONERROR : CONIMPOSSIBLE);
310 if (cmd & LEAVE_PENDING)
315 /* Second: Login with proper USER/PASS sequence. */
316 logprintf (LOG_VERBOSE, _("Logging in as %s ... "),
317 quotearg_style (escape_quoting_style, user));
318 if (opt.server_response)
319 logputs (LOG_ALWAYS, "\n");
320 err = ftp_login (csock, logname, passwd);
325 /* FTPRERR, FTPSRVERR, WRITEFAILED, FTPLOGREFUSED, FTPLOGINC */
329 logputs (LOG_VERBOSE, "\n");
330 logputs (LOG_NOTQUIET, _("\
331 Error in server response, closing control connection.\n"));
336 logputs (LOG_VERBOSE, "\n");
337 logputs (LOG_NOTQUIET, _("Error in server greeting.\n"));
342 logputs (LOG_VERBOSE, "\n");
343 logputs (LOG_NOTQUIET,
344 _("Write failed, closing control connection.\n"));
349 logputs (LOG_VERBOSE, "\n");
350 logputs (LOG_NOTQUIET, _("The server refuses login.\n"));
353 return FTPLOGREFUSED;
355 logputs (LOG_VERBOSE, "\n");
356 logputs (LOG_NOTQUIET, _("Login incorrect.\n"));
361 if (!opt.server_response)
362 logputs (LOG_VERBOSE, _("Logged in!\n"));
367 /* Third: Get the system type */
368 if (!opt.server_response)
369 logprintf (LOG_VERBOSE, "==> SYST ... ");
370 err = ftp_syst (csock, &con->rs);
375 logputs (LOG_VERBOSE, "\n");
376 logputs (LOG_NOTQUIET, _("\
377 Error in server response, closing control connection.\n"));
382 logputs (LOG_VERBOSE, "\n");
383 logputs (LOG_NOTQUIET,
384 _("Server error, can't determine system type.\n"));
387 /* Everything is OK. */
392 if (!opt.server_response && err != FTPSRVERR)
393 logputs (LOG_VERBOSE, _("done. "));
395 /* Fourth: Find the initial ftp directory */
397 if (!opt.server_response)
398 logprintf (LOG_VERBOSE, "==> PWD ... ");
399 err = ftp_pwd (csock, &con->id);
404 logputs (LOG_VERBOSE, "\n");
405 logputs (LOG_NOTQUIET, _("\
406 Error in server response, closing control connection.\n"));
411 /* PWD unsupported -- assume "/". */
412 xfree_null (con->id);
413 con->id = xstrdup ("/");
416 /* Everything is OK. */
424 Don't help me out. Please.
425 A reasonably recent VMS FTP server will cope just fine with
426 UNIX file specifications. This code just spoils things.
427 Discarding the device name, for example, is not a wise move.
428 This code was disabled but left in as an example of what not
432 /* VMS will report something like "PUB$DEVICE:[INITIAL.FOLDER]".
433 Convert it to "/INITIAL/FOLDER" */
434 if (con->rs == ST_VMS)
436 char *path = strchr (con->id, '[');
437 char *pathend = path ? strchr (path + 1, ']') : NULL;
438 if (!path || !pathend)
439 DEBUGP (("Initial VMS directory not in the form [...]!\n"));
442 char *idir = con->id;
443 DEBUGP (("Preprocessing the initial VMS directory\n"));
444 DEBUGP ((" old = '%s'\n", con->id));
445 /* We do the conversion in-place by copying the stuff
446 between [ and ] to the beginning, and changing dots
447 to slashes at the same time. */
449 for (++path; path < pathend; path++, idir++)
450 *idir = *path == '.' ? '/' : *path;
452 DEBUGP ((" new = '%s'\n\n", con->id));
457 if (!opt.server_response)
458 logputs (LOG_VERBOSE, _("done.\n"));
460 /* Fifth: Set the FTP type. */
461 type_char = ftp_process_type (u->params);
462 if (!opt.server_response)
463 logprintf (LOG_VERBOSE, "==> TYPE %c ... ", type_char);
464 err = ftp_type (csock, type_char);
465 /* FTPRERR, WRITEFAILED, FTPUNKNOWNTYPE */
469 logputs (LOG_VERBOSE, "\n");
470 logputs (LOG_NOTQUIET, _("\
471 Error in server response, closing control connection.\n"));
476 logputs (LOG_VERBOSE, "\n");
477 logputs (LOG_NOTQUIET,
478 _("Write failed, closing control connection.\n"));
483 logputs (LOG_VERBOSE, "\n");
484 logprintf (LOG_NOTQUIET,
485 _("Unknown type `%c', closing control connection.\n"),
491 /* Everything is OK. */
496 if (!opt.server_response)
497 logputs (LOG_VERBOSE, _("done. "));
503 logputs (LOG_VERBOSE, _("==> CWD not needed.\n"));
511 char *target = u->dir;
513 DEBUGP (("changing working directory\n"));
515 /* Change working directory. To change to a non-absolute
516 Unix directory, we need to prepend initial directory
517 (con->id) to it. Absolute directories "just work".
519 A relative directory is one that does not begin with '/'
520 and, on non-Unix OS'es, one that doesn't begin with
523 This is not done for OS400, which doesn't use
524 "/"-delimited directories, nor does it support directory
525 hierarchies. "CWD foo" followed by "CWD bar" leaves us
526 in "bar", not in "foo/bar", as would be customary
530 Why is this wise even on UNIX? It certainly fouls VMS.
531 See below for a more reliable, more universal method.
535 I'm not crazy about it either. I'm informed it's useful
536 for misconfigured servers that have some dirs in the path
537 with +x but -r, but this method is not RFC-conformant. I
538 understand the need to deal with crappy server
539 configurations, but it's far better to use the canonical
540 method first, and fall back to kludges second.
544 && !(con->rs != ST_UNIX
545 && c_isalpha (target[0])
547 && (con->rs != ST_OS400)
548 && (con->rs != ST_VMS))
550 int idlen = strlen (con->id);
553 /* Strip trailing slash(es) from con->id. */
554 while (idlen > 0 && con->id[idlen - 1] == '/')
556 p = ntarget = (char *)alloca (idlen + 1 + strlen (u->dir) + 1);
557 memcpy (p, con->id, idlen);
562 DEBUGP (("Prepended initial PWD to relative path:\n"));
563 DEBUGP ((" pwd: '%s'\n old: '%s'\n new: '%s'\n",
564 con->id, target, ntarget));
570 Don't help me out. Please.
571 A reasonably recent VMS FTP server will cope just fine with
572 UNIX file specifications. This code just spoils things.
573 Discarding the device name, for example, is not a wise
575 This code was disabled but left in as an example of what
579 /* If the FTP host runs VMS, we will have to convert the absolute
580 directory path in UNIX notation to absolute directory path in
581 VMS notation as VMS FTP servers do not like UNIX notation of
582 absolute paths. "VMS notation" is [dir.subdir.subsubdir]. */
584 if (con->rs == ST_VMS)
587 char *ntarget = (char *)alloca (strlen (target) + 2);
588 /* We use a converted initial dir, so directories in
589 TARGET will be separated with slashes, something like
590 "/INITIAL/FOLDER/DIR/SUBDIR". Convert that to
591 "[INITIAL.FOLDER.DIR.SUBDIR]". */
592 strcpy (ntarget, target);
593 assert (*ntarget == '/');
595 for (tmpp = ntarget + 1; *tmpp; tmpp++)
600 DEBUGP (("Changed file name to VMS syntax:\n"));
601 DEBUGP ((" Unix: '%s'\n VMS: '%s'\n", target, ntarget));
607 A relative directory is relative to the initial directory.
608 Thus, what _is_ useful on VMS (and probably elsewhere) is
609 to CWD to the initial directory (ideally, whatever the
610 server reports, _exactly_, NOT badly UNIX-ixed), and then
611 CWD to the (new) relative directory. This should probably
612 be restructured as a function, called once or twice, but
613 I'm lazy enough to take the badly indented loop short-cut
617 /* Decide on one pass (absolute) or two (relative).
618 The VMS restriction may be relaxed when the squirrely code
621 if ((con->rs == ST_VMS) && (target[0] != '/'))
624 DEBUGP (("Using two-step CWD for relative path.\n"));
628 /* Go straight to the target. */
632 /* At least one VMS FTP server (TCPware V5.6-2) can switch to
633 a UNIX emulation mode when given a UNIX-like directory
634 specification (like "a/b/c"). If allowed to continue this
635 way, LIST interpretation will be confused, because the
636 system type (SYST response) will not be re-checked, and
637 future UNIX-format directory listings (for multiple URLs or
638 "-r") will be horribly misinterpreted.
640 The cheap and nasty work-around is to do a "CWD []" after a
641 UNIX-like directory specification is used. (A single-level
642 directory is harmless.) This puts the TCPware server back
643 into VMS mode, and does no harm on other servers.
645 Unlike the rest of this block, this particular behavior
646 _is_ VMS-specific, so it gets its own VMS test.
648 if ((con->rs == ST_VMS) && (strchr( target, '/') != NULL))
651 DEBUGP (("Using extra \"CWD []\" step for VMS server.\n"));
658 /* 2004-09-20 SMS. */
659 /* Sorry about the deviant indenting. Laziness. */
661 for (cwd_count = cwd_start; cwd_count < cwd_end; cwd_count++)
666 /* Step one (optional): Go to the initial directory,
667 exactly as reported by the server.
673 /* Step two: Go to the target directory. (Absolute or
674 relative will work now.)
680 /* Step three (optional): "CWD []" to restore server
691 if (!opt.server_response)
692 logprintf (LOG_VERBOSE, "==> CWD (%d) %s ... ", cwd_count,
693 quotearg_style (escape_quoting_style, target));
694 err = ftp_cwd (csock, targ);
695 /* FTPRERR, WRITEFAILED, FTPNSFOD */
699 logputs (LOG_VERBOSE, "\n");
700 logputs (LOG_NOTQUIET, _("\
701 Error in server response, closing control connection.\n"));
706 logputs (LOG_VERBOSE, "\n");
707 logputs (LOG_NOTQUIET,
708 _("Write failed, closing control connection.\n"));
713 logputs (LOG_VERBOSE, "\n");
714 logprintf (LOG_NOTQUIET, _("No such directory %s.\n\n"),
724 if (!opt.server_response)
725 logputs (LOG_VERBOSE, _("done.\n"));
729 /* 2004-09-20 SMS. */
730 /* End of deviant indenting. */
734 else /* do not CWD */
735 logputs (LOG_VERBOSE, _("==> CWD not required.\n"));
737 if ((cmd & DO_RETR) && passed_expected_bytes == 0)
741 if (!opt.server_response)
742 logprintf (LOG_VERBOSE, "==> SIZE %s ... ",
743 quotearg_style (escape_quoting_style, u->file));
746 err = ftp_size (csock, u->file, &expected_bytes);
752 logputs (LOG_VERBOSE, "\n");
753 logputs (LOG_NOTQUIET, _("\
754 Error in server response, closing control connection.\n"));
759 got_expected_bytes = true;
760 /* Everything is OK. */
765 if (!opt.server_response)
766 logprintf (LOG_VERBOSE, expected_bytes ? "%s\n" : _("done.\n"),
767 number_to_static_string (expected_bytes));
770 if (cmd & DO_RETR && restval > 0 && restval == expected_bytes)
772 /* Server confirms that file has length restval. We should stop now.
773 Some servers (f.e. NcFTPd) return error when receive REST 0 */
774 logputs (LOG_VERBOSE, _("File has already been retrieved.\n"));
780 /* If anything is to be retrieved, PORT (or PASV) must be sent. */
781 if (cmd & (DO_LIST | DO_RETR))
785 ip_address passive_addr;
787 err = ftp_do_pasv (csock, &passive_addr, &passive_port);
788 /* FTPRERR, WRITEFAILED, FTPNOPASV, FTPINVPASV */
792 logputs (LOG_VERBOSE, "\n");
793 logputs (LOG_NOTQUIET, _("\
794 Error in server response, closing control connection.\n"));
799 logputs (LOG_VERBOSE, "\n");
800 logputs (LOG_NOTQUIET,
801 _("Write failed, closing control connection.\n"));
806 logputs (LOG_VERBOSE, "\n");
807 logputs (LOG_NOTQUIET, _("Cannot initiate PASV transfer.\n"));
810 logputs (LOG_VERBOSE, "\n");
811 logputs (LOG_NOTQUIET, _("Cannot parse PASV response.\n"));
820 DEBUGP (("trying to connect to %s port %d\n",
821 print_address (&passive_addr), passive_port));
822 dtsock = connect_to_ip (&passive_addr, passive_port, NULL);
825 int save_errno = errno;
828 logprintf (LOG_VERBOSE, _("couldn't connect to %s port %d: %s\n"),
829 print_address (&passive_addr), passive_port,
830 strerror (save_errno));
831 return (retryable_socket_connect_error (save_errno)
832 ? CONERROR : CONIMPOSSIBLE);
835 pasv_mode_open = true; /* Flag to avoid accept port */
836 if (!opt.server_response)
837 logputs (LOG_VERBOSE, _("done. "));
841 if (!pasv_mode_open) /* Try to use a port command if PASV failed */
843 err = ftp_do_port (csock, &local_sock);
844 /* FTPRERR, WRITEFAILED, bindport (FTPSYSERR), HOSTERR,
849 logputs (LOG_VERBOSE, "\n");
850 logputs (LOG_NOTQUIET, _("\
851 Error in server response, closing control connection.\n"));
855 fd_close (local_sock);
858 logputs (LOG_VERBOSE, "\n");
859 logputs (LOG_NOTQUIET,
860 _("Write failed, closing control connection.\n"));
864 fd_close (local_sock);
867 logputs (LOG_VERBOSE, "\n");
868 logprintf (LOG_NOTQUIET, "socket: %s\n", strerror (errno));
872 fd_close (local_sock);
875 logputs (LOG_VERBOSE, "\n");
876 logprintf (LOG_NOTQUIET, _("Bind error (%s).\n"),
881 logputs (LOG_VERBOSE, "\n");
882 logputs (LOG_NOTQUIET, _("Invalid PORT.\n"));
886 fd_close (local_sock);
893 if (!opt.server_response)
894 logputs (LOG_VERBOSE, _("done. "));
896 } /* cmd & (DO_LIST | DO_RETR) */
898 /* Restart if needed. */
899 if (restval && (cmd & DO_RETR))
901 if (!opt.server_response)
902 logprintf (LOG_VERBOSE, "==> REST %s ... ",
903 number_to_static_string (restval));
904 err = ftp_rest (csock, restval);
906 /* FTPRERR, WRITEFAILED, FTPRESTFAIL */
910 logputs (LOG_VERBOSE, "\n");
911 logputs (LOG_NOTQUIET, _("\
912 Error in server response, closing control connection.\n"));
916 fd_close (local_sock);
919 logputs (LOG_VERBOSE, "\n");
920 logputs (LOG_NOTQUIET,
921 _("Write failed, closing control connection.\n"));
925 fd_close (local_sock);
928 logputs (LOG_VERBOSE, _("\nREST failed, starting from scratch.\n"));
936 if (err != FTPRESTFAIL && !opt.server_response)
937 logputs (LOG_VERBOSE, _("done. "));
938 } /* restval && cmd & DO_RETR */
942 /* If we're in spider mode, don't really retrieve anything except
943 the directory listing and verify whether the given "file" exists. */
949 res = ftp_get_listing (u, con, &f);
950 /* Set the DO_RETR command flag again, because it gets unset when
951 calling ftp_get_listing() and would otherwise cause an assertion
952 failure earlier on when this function gets repeatedly called
953 (e.g., when recursing). */
959 if (!strcmp (f->name, u->file))
968 logputs (LOG_VERBOSE, "\n");
969 logprintf (LOG_NOTQUIET, _("File %s exists.\n"),
974 logputs (LOG_VERBOSE, "\n");
975 logprintf (LOG_NOTQUIET, _("No such file %s.\n"),
982 fd_close (local_sock);
988 if (!opt.server_response)
991 logputs (LOG_VERBOSE, "\n");
992 logprintf (LOG_VERBOSE, "==> RETR %s ... ",
993 quotearg_style (escape_quoting_style, u->file));
997 err = ftp_retr (csock, u->file);
998 /* FTPRERR, WRITEFAILED, FTPNSFOD */
1002 logputs (LOG_VERBOSE, "\n");
1003 logputs (LOG_NOTQUIET, _("\
1004 Error in server response, closing control connection.\n"));
1008 fd_close (local_sock);
1011 logputs (LOG_VERBOSE, "\n");
1012 logputs (LOG_NOTQUIET,
1013 _("Write failed, closing control connection.\n"));
1017 fd_close (local_sock);
1020 logputs (LOG_VERBOSE, "\n");
1021 logprintf (LOG_NOTQUIET, _("No such file %s.\n\n"),
1024 fd_close (local_sock);
1032 if (!opt.server_response)
1033 logputs (LOG_VERBOSE, _("done.\n"));
1035 if (! got_expected_bytes)
1036 expected_bytes = ftp_expected_bytes (ftp_last_respline);
1041 if (!opt.server_response)
1042 logputs (LOG_VERBOSE, "==> LIST ... ");
1043 /* As Maciej W. Rozycki (macro@ds2.pg.gda.pl) says, `LIST'
1044 without arguments is better than `LIST .'; confirmed by
1046 err = ftp_list (csock, NULL, con->rs);
1047 /* FTPRERR, WRITEFAILED */
1051 logputs (LOG_VERBOSE, "\n");
1052 logputs (LOG_NOTQUIET, _("\
1053 Error in server response, closing control connection.\n"));
1057 fd_close (local_sock);
1060 logputs (LOG_VERBOSE, "\n");
1061 logputs (LOG_NOTQUIET,
1062 _("Write failed, closing control connection.\n"));
1066 fd_close (local_sock);
1069 logputs (LOG_VERBOSE, "\n");
1070 logprintf (LOG_NOTQUIET, _("No such file or directory %s.\n\n"),
1073 fd_close (local_sock);
1080 if (!opt.server_response)
1081 logputs (LOG_VERBOSE, _("done.\n"));
1083 if (! got_expected_bytes)
1084 expected_bytes = ftp_expected_bytes (ftp_last_respline);
1085 } /* cmd & DO_LIST */
1087 if (!(cmd & (DO_LIST | DO_RETR)) || (opt.spider && !(cmd & DO_LIST)))
1088 return RETRFINISHED;
1090 /* Some FTP servers return the total length of file after REST
1091 command, others just return the remaining size. */
1092 if (passed_expected_bytes && restval && expected_bytes
1093 && (expected_bytes == passed_expected_bytes - restval))
1095 DEBUGP (("Lying FTP server found, adjusting.\n"));
1096 expected_bytes = passed_expected_bytes;
1099 /* If no transmission was required, then everything is OK. */
1100 if (!pasv_mode_open) /* we are not using pasive mode so we need
1103 /* Wait for the server to connect to the address we're waiting
1105 dtsock = accept_connection (local_sock);
1108 logprintf (LOG_NOTQUIET, "accept: %s\n", strerror (errno));
1113 /* Open the file -- if output_stream is set, use it instead. */
1116 Note that having the output_stream ("-O") file opened in main()
1117 (main.c) rather limits the ability in VMS to open the file
1118 differently for ASCII versus binary FTP here. (Of course, doing it
1119 there allows a open failure to be detected immediately, without first
1120 connecting to the server.)
1122 if (!output_stream || con->cmd & DO_LIST)
1124 /* On VMS, alter the name as required. */
1128 targ = ods_conform (con->target);
1129 if (targ != con->target)
1131 xfree (con->target);
1134 #endif /* def __VMS */
1136 mkalldirs (con->target);
1138 rotate_backups (con->target);
1141 For VMS, define common fopen() optional arguments, and a handy macro
1142 for use as a variable "binary" flag.
1143 Elsewhere, define a constant "binary" flag.
1144 Isn't it nice to have distinct text and binary file types?
1146 # define BIN_TYPE_TRANSFER (type_char != 'A')
1148 # define FOPEN_OPT_ARGS "fop=sqo", "acc", acc_cb, &open_id
1149 # define FOPEN_OPT_ARGS_BIN "ctx=bin,stm", "rfm=fix", "mrs=512" FOPEN_OPT_ARGS
1150 # define BIN_TYPE_FILE (BIN_TYPE_TRANSFER && (opt.ftp_stmlf == 0))
1151 #else /* def __VMS */
1152 # define BIN_TYPE_FILE 1
1153 #endif /* def __VMS [else] */
1155 if (restval && !(con->cmd & DO_LIST))
1163 fp = fopen (con->target, "ab", FOPEN_OPT_ARGS_BIN);
1168 fp = fopen (con->target, "a", FOPEN_OPT_ARGS);
1170 #else /* def __VMS */
1171 fp = fopen (con->target, "ab");
1172 #endif /* def __VMS [else] */
1174 else if (opt.noclobber || opt.always_rest || opt.timestamping || opt.dirstruct
1175 || opt.output_document)
1183 fp = fopen (con->target, "wb", FOPEN_OPT_ARGS_BIN);
1188 fp = fopen (con->target, "w", FOPEN_OPT_ARGS);
1190 #else /* def __VMS */
1191 fp = fopen (con->target, "wb");
1192 #endif /* def __VMS [else] */
1196 fp = fopen_excl (con->target, true);
1197 if (!fp && errno == EEXIST)
1199 /* We cannot just invent a new name and use it (which is
1200 what functions like unique_create typically do)
1201 because we told the user we'd use this name.
1202 Instead, return and retry the download. */
1203 logprintf (LOG_NOTQUIET, _("%s has sprung into existence.\n"),
1208 fd_close (local_sock);
1209 return FOPEN_EXCL_ERR;
1214 logprintf (LOG_NOTQUIET, "%s: %s\n", con->target, strerror (errno));
1218 fd_close (local_sock);
1225 if (passed_expected_bytes)
1227 print_length (passed_expected_bytes, restval, true);
1228 expected_bytes = passed_expected_bytes;
1229 /* for fd_read_body's progress bar */
1231 else if (expected_bytes)
1232 print_length (expected_bytes, restval, false);
1234 /* Get the contents of the document. */
1236 if (restval && rest_failed)
1237 flags |= rb_skip_startpos;
1239 res = fd_read_body (dtsock, fp,
1240 expected_bytes ? expected_bytes - restval : 0,
1241 restval, &rd_size, qtyread, &con->dltime, flags);
1243 tms = datetime_str (time (NULL));
1244 tmrate = retr_rate (rd_size, con->dltime);
1245 total_download_time += con->dltime;
1247 fd_close (local_sock);
1248 /* Close the local file. */
1249 if (!output_stream || con->cmd & DO_LIST)
1252 /* If fd_read_body couldn't write to fp, bail out. */
1255 logprintf (LOG_NOTQUIET, _("%s: %s, closing control connection.\n"),
1256 con->target, strerror (errno));
1264 logprintf (LOG_NOTQUIET, _("%s (%s) - Data connection: %s; "),
1265 tms, tmrate, fd_errstr (dtsock));
1266 if (opt.server_response)
1267 logputs (LOG_ALWAYS, "\n");
1271 /* Get the server to tell us if everything is retrieved. */
1272 err = ftp_response (csock, &respline);
1275 /* The control connection is decidedly closed. Print the time
1276 only if it hasn't already been printed. */
1278 logprintf (LOG_NOTQUIET, "%s (%s) - ", tms, tmrate);
1279 logputs (LOG_NOTQUIET, _("Control connection closed.\n"));
1280 /* If there is an error on the control connection, close it, but
1281 return FTPRETRINT, since there is a possibility that the
1282 whole file was retrieved nevertheless (but that is for
1283 ftp_loop_internal to decide). */
1287 } /* err != FTPOK */
1288 /* If retrieval failed for any reason, return FTPRETRINT, but do not
1289 close socket, since the control connection is still alive. If
1290 there is something wrong with the control connection, it will
1291 become apparent later. */
1292 if (*respline != '2')
1296 logprintf (LOG_NOTQUIET, "%s (%s) - ", tms, tmrate);
1297 logputs (LOG_NOTQUIET, _("Data transfer aborted.\n"));
1304 /* What now? The data connection was erroneous, whereas the
1305 response says everything is OK. We shall play it safe. */
1309 if (!(cmd & LEAVE_PENDING))
1311 /* Closing the socket is faster than sending 'QUIT' and the
1312 effect is the same. */
1316 /* If it was a listing, and opt.server_response is true,
1318 if (opt.server_response && (con->cmd & DO_LIST))
1321 Much of this work may already have been done, but repeating it should
1322 do no damage beyond wasting time.
1324 /* On VMS, alter the name as required. */
1328 targ = ods_conform( con->target);
1329 if (targ != con->target)
1331 xfree( con->target);
1334 #endif /* def __VMS */
1336 mkalldirs (con->target);
1337 fp = fopen (con->target, "r");
1339 logprintf (LOG_ALWAYS, "%s: %s\n", con->target, strerror (errno));
1343 /* The lines are being read with read_whole_line because of
1344 no-buffering on opt.lfile. */
1345 while ((line = read_whole_line (fp)) != NULL)
1347 char *p = strchr (line, '\0');
1348 while (p > line && (p[-1] == '\n' || p[-1] == '\r'))
1350 logprintf (LOG_ALWAYS, "%s\n",
1351 quotearg_style (escape_quoting_style, line));
1356 } /* con->cmd & DO_LIST && server_response */
1358 return RETRFINISHED;
1361 /* A one-file FTP loop. This is the part where FTP retrieval is
1362 retried, and retried, and retried, and...
1364 This loop either gets commands from con, or (if ON_YOUR_OWN is
1365 set), makes them up to retrieve the file given by the URL. */
1367 ftp_loop_internal (struct url *u, struct fileinfo *f, ccon *con, char **local_file)
1370 wgint restval, len = 0, qtyread = 0;
1372 const char *tmrate = NULL;
1376 /* Get the target, and set the name for the message accordingly. */
1377 if ((f == NULL) && (con->target))
1379 /* Explicit file (like ".listing"). */
1384 /* URL-derived file. Consider "-O file" name. */
1385 con->target = url_file_name (u);
1386 if (!opt.output_document)
1389 locf = opt.output_document;
1392 /* If the output_document was given, then this check was already done and
1393 the file didn't exist. Hence the !opt.output_document */
1394 if (opt.noclobber && !opt.output_document && file_exists_p (con->target))
1396 logprintf (LOG_VERBOSE,
1397 _("File %s already there; not retrieving.\n"), quote (con->target));
1398 /* If the file is there, we suppose it's retrieved OK. */
1402 /* Remove it if it's a link. */
1403 remove_link (con->target);
1407 if (con->st & ON_YOUR_OWN)
1408 con->st = ON_YOUR_OWN;
1410 orig_lp = con->cmd & LEAVE_PENDING ? 1 : 0;
1415 /* Increment the pass counter. */
1417 sleep_between_retrievals (count);
1418 if (con->st & ON_YOUR_OWN)
1421 con->cmd |= (DO_RETR | LEAVE_PENDING);
1422 if (con->csock != -1)
1423 con->cmd &= ~ (DO_LOGIN | DO_CWD);
1425 con->cmd |= (DO_LOGIN | DO_CWD);
1427 else /* not on your own */
1429 if (con->csock != -1)
1430 con->cmd &= ~DO_LOGIN;
1432 con->cmd |= DO_LOGIN;
1433 if (con->st & DONE_CWD)
1434 con->cmd &= ~DO_CWD;
1439 /* Decide whether or not to restart. */
1440 if (con->cmd & DO_LIST)
1442 else if (opt.always_rest
1443 && stat (locf, &st) == 0
1444 && S_ISREG (st.st_mode))
1445 /* When -c is used, continue from on-disk size. (Can't use
1446 hstat.len even if count>1 because we don't want a failed
1447 first attempt to clobber existing data.) */
1448 restval = st.st_size;
1450 restval = qtyread; /* start where the previous run left off */
1454 /* Get the current time string. */
1455 tms = datetime_str (time (NULL));
1456 /* Print fetch message, if opt.verbose. */
1459 char *hurl = url_string (u, URL_AUTH_HIDE_PASSWD);
1463 sprintf (tmp, _("(try:%2d)"), count);
1464 logprintf (LOG_VERBOSE, "--%s-- %s\n %s => %s\n",
1465 tms, hurl, tmp, quote (locf));
1467 ws_changetitle (hurl);
1471 /* Send getftp the proper length, if fileinfo was provided. */
1472 if (f && f->type != FT_SYMLINK)
1476 err = getftp (u, len, &qtyread, restval, con);
1478 if (con->csock == -1)
1479 con->st &= ~DONE_CWD;
1481 con->st |= DONE_CWD;
1485 case HOSTERR: case CONIMPOSSIBLE: case FWRITEERR: case FOPENERR:
1486 case FTPNSFOD: case FTPLOGINC: case FTPNOPASV: case CONTNOTSUPPORTED:
1487 /* Fatal errors, give up. */
1489 case CONSOCKERR: case CONERROR: case FTPSRVERR: case FTPRERR:
1490 case WRITEFAILED: case FTPUNKNOWNTYPE: case FTPSYSERR:
1491 case FTPPORTERR: case FTPLOGREFUSED: case FTPINVPASV:
1492 case FOPEN_EXCL_ERR:
1493 printwhat (count, opt.ntry);
1494 /* non-fatal errors */
1495 if (err == FOPEN_EXCL_ERR)
1497 /* Re-determine the file name. */
1498 xfree_null (con->target);
1499 con->target = url_file_name (u);
1504 /* If the control connection was closed, the retrieval
1505 will be considered OK if f->size == len. */
1506 if (!f || qtyread != f->size)
1508 printwhat (count, opt.ntry);
1519 tms = datetime_str (time (NULL));
1521 tmrate = retr_rate (qtyread - restval, con->dltime);
1523 /* If we get out of the switch above without continue'ing, we've
1524 successfully downloaded a file. Remember this fact. */
1525 downloaded_file (FILE_DOWNLOADED_NORMALLY, locf);
1527 if (con->st & ON_YOUR_OWN)
1529 fd_close (con->csock);
1534 bool write_to_stdout = (opt.output_document && HYPHENP (opt.output_document));
1536 logprintf (LOG_VERBOSE,
1538 ? _("%s (%s) - written to stdout %s[%s]\n\n")
1539 : _("%s (%s) - %s saved [%s]\n\n"),
1541 write_to_stdout ? "" : quote (locf),
1542 number_to_static_string (qtyread));
1544 if (!opt.verbose && !opt.quiet)
1546 /* Need to hide the password from the URL. The `if' is here
1547 so that we don't do the needless allocation every
1549 char *hurl = url_string (u, URL_AUTH_HIDE_PASSWD);
1550 logprintf (LOG_NONVERBOSE, "%s URL: %s [%s] -> \"%s\" [%d]\n",
1551 tms, hurl, number_to_static_string (qtyread), locf, count);
1555 if ((con->cmd & DO_LIST))
1556 /* This is a directory listing file. */
1558 if (!opt.remove_listing)
1559 /* --dont-remove-listing was specified, so do count this towards the
1560 number of bytes and files downloaded. */
1562 total_downloaded_bytes += qtyread;
1566 /* Deletion of listing files is not controlled by --delete-after, but
1567 by the more specific option --dont-remove-listing, and the code
1568 to do this deletion is in another function. */
1570 else if (!opt.spider)
1571 /* This is not a directory listing file. */
1573 /* Unlike directory listing files, don't pretend normal files weren't
1574 downloaded if they're going to be deleted. People seeding proxies,
1575 for instance, may want to know how many bytes and files they've
1576 downloaded through it. */
1577 total_downloaded_bytes += qtyread;
1580 if (opt.delete_after && !input_file_url (opt.input_filename))
1583 Removing file due to --delete-after in ftp_loop_internal():\n"));
1584 logprintf (LOG_VERBOSE, _("Removing %s.\n"), locf);
1586 logprintf (LOG_NOTQUIET, "unlink: %s\n", strerror (errno));
1590 /* Restore the original leave-pendingness. */
1592 con->cmd |= LEAVE_PENDING;
1594 con->cmd &= ~LEAVE_PENDING;
1597 *local_file = xstrdup (locf);
1600 } while (!opt.ntry || (count < opt.ntry));
1602 if (con->csock != -1 && (con->st & ON_YOUR_OWN))
1604 fd_close (con->csock);
1610 /* Return the directory listing in a reusable format. The directory
1611 is specifed in u->dir. */
1613 ftp_get_listing (struct url *u, ccon *con, struct fileinfo **f)
1616 char *uf; /* url file name */
1617 char *lf; /* list file name */
1618 char *old_target = con->target;
1620 con->st &= ~ON_YOUR_OWN;
1621 con->cmd |= (DO_LIST | LEAVE_PENDING);
1622 con->cmd &= ~DO_RETR;
1624 /* Find the listing file name. We do it by taking the file name of
1625 the URL and replacing the last component with the listing file
1627 uf = url_file_name (u);
1628 lf = file_merge (uf, LIST_FILENAME);
1630 DEBUGP ((_("Using %s as listing tmp file.\n"), quote (lf)));
1632 con->target = xstrdup (lf);
1634 err = ftp_loop_internal (u, NULL, con, NULL);
1635 lf = xstrdup (con->target);
1636 xfree (con->target);
1637 con->target = old_target;
1641 *f = ftp_parse_ls (lf, con->rs);
1642 if (opt.remove_listing)
1645 logprintf (LOG_NOTQUIET, "unlink: %s\n", strerror (errno));
1647 logprintf (LOG_VERBOSE, _("Removed %s.\n"), quote (lf));
1653 con->cmd &= ~DO_LIST;
1657 static uerr_t ftp_retrieve_dirs (struct url *, struct fileinfo *, ccon *);
1658 static uerr_t ftp_retrieve_glob (struct url *, ccon *, int);
1659 static struct fileinfo *delelement (struct fileinfo *, struct fileinfo **);
1660 static void freefileinfo (struct fileinfo *f);
1662 /* Retrieve a list of files given in struct fileinfo linked list. If
1663 a file is a symbolic link, do not retrieve it, but rather try to
1664 set up a similar link on the local disk, if the symlinks are
1667 If opt.recursive is set, after all files have been retrieved,
1668 ftp_retrieve_dirs will be called to retrieve the directories. */
1670 ftp_retrieve_list (struct url *u, struct fileinfo *f, ccon *con)
1672 static int depth = 0;
1674 struct fileinfo *orig;
1677 bool dlthis; /* Download this (file). */
1678 const char *actual_target = NULL;
1680 /* Increase the depth. */
1682 if (opt.reclevel != INFINITE_RECURSION && depth > opt.reclevel)
1684 DEBUGP ((_("Recursion depth %d exceeded max. depth %d.\n"),
1685 depth, opt.reclevel));
1693 con->st &= ~ON_YOUR_OWN;
1694 if (!(con->st & DONE_CWD))
1697 con->cmd &= ~DO_CWD;
1698 con->cmd |= (DO_RETR | LEAVE_PENDING);
1701 con->cmd |= DO_LOGIN;
1703 con->cmd &= ~DO_LOGIN;
1705 err = RETROK; /* in case it's not used */
1709 char *old_target, *ofile;
1711 if (opt.quota && total_downloaded_bytes > opt.quota)
1716 old_target = con->target;
1718 ofile = xstrdup (u->file);
1719 url_set_file (u, f->name);
1721 con->target = url_file_name (u);
1725 if (opt.timestamping && f->type == FT_PLAINFILE)
1728 /* If conversion of HTML files retrieved via FTP is ever implemented,
1729 we'll need to stat() <file>.orig here when -K has been specified.
1730 I'm not implementing it now since files on an FTP server are much
1731 more likely than files on an HTTP server to legitimately have a
1733 if (!stat (con->target, &st))
1737 /* Else, get it from the file. */
1738 local_size = st.st_size;
1741 /* Modification time granularity is 2 seconds for Windows, so
1742 increase local time by 1 second for later comparison. */
1745 /* Compare file sizes only for servers that tell us correct
1746 values. Assume sizes being equal for servers that lie
1748 cor_val = (con->rs == ST_UNIX || con->rs == ST_WINNT);
1749 eq_size = cor_val ? (local_size == f->size) : true;
1750 if (f->tstamp <= tml && eq_size)
1752 /* Remote file is older, file sizes can be compared and
1754 logprintf (LOG_VERBOSE, _("\
1755 Remote file no newer than local file %s -- not retrieving.\n"), quote (con->target));
1760 /* Remote file is newer or sizes cannot be matched */
1761 logprintf (LOG_VERBOSE, _("\
1762 Remote file is newer than local file %s -- retrieving.\n\n"),
1763 quote (con->target));
1767 /* Sizes do not match */
1768 logprintf (LOG_VERBOSE, _("\
1769 The sizes do not match (local %s) -- retrieving.\n\n"),
1770 number_to_static_string (local_size));
1773 } /* opt.timestamping && f->type == FT_PLAINFILE */
1777 /* If opt.retr_symlinks is defined, we treat symlinks as
1778 if they were normal files. There is currently no way
1779 to distinguish whether they might be directories, and
1781 if (!opt.retr_symlinks)
1785 logputs (LOG_NOTQUIET,
1786 _("Invalid name of the symlink, skipping.\n"));
1790 /* Check whether we already have the correct
1792 int rc = lstat (con->target, &st);
1795 size_t len = strlen (f->linkto) + 1;
1796 if (S_ISLNK (st.st_mode))
1798 char *link_target = (char *)alloca (len);
1799 size_t n = readlink (con->target, link_target, len);
1801 && (memcmp (link_target, f->linkto, n) == 0))
1803 logprintf (LOG_VERBOSE, _("\
1804 Already have correct symlink %s -> %s\n\n"),
1805 quote (con->target),
1812 logprintf (LOG_VERBOSE, _("Creating symlink %s -> %s\n"),
1813 quote (con->target), quote (f->linkto));
1814 /* Unlink before creating symlink! */
1815 unlink (con->target);
1816 if (symlink (f->linkto, con->target) == -1)
1817 logprintf (LOG_NOTQUIET, "symlink: %s\n", strerror (errno));
1818 logputs (LOG_VERBOSE, "\n");
1819 } /* have f->linkto */
1820 #else /* not HAVE_SYMLINK */
1821 logprintf (LOG_NOTQUIET,
1822 _("Symlinks not supported, skipping symlink %s.\n"),
1823 quote (con->target));
1824 #endif /* not HAVE_SYMLINK */
1826 else /* opt.retr_symlinks */
1829 err = ftp_loop_internal (u, f, con, NULL);
1830 } /* opt.retr_symlinks */
1834 logprintf (LOG_NOTQUIET, _("Skipping directory %s.\n"),
1838 /* Call the retrieve loop. */
1840 err = ftp_loop_internal (u, f, con, NULL);
1843 logprintf (LOG_NOTQUIET, _("%s: unknown/unsupported file type.\n"),
1850 * Set permissions _before_ setting the times, as setting the
1851 * permissions changes the modified-time, at least on VMS.
1852 * Also, use the opt.output_document name here, too, as
1853 * appropriate. (Do the test once, and save the result.)
1856 set_local_file (&actual_target, con->target);
1858 /* If downloading a plain file, set valid (non-zero) permissions. */
1859 if (dlthis && (actual_target != NULL) && (f->type == FT_PLAINFILE))
1862 chmod (actual_target, f->perms);
1864 DEBUGP (("Unrecognized permissions for %s.\n", actual_target));
1867 /* Set the time-stamp information to the local file. Symlinks
1868 are not to be stamped because it sets the stamp on the
1870 if (actual_target != NULL)
1872 if (opt.useservertimestamps
1873 && !(f->type == FT_SYMLINK && !opt.retr_symlinks)
1876 && file_exists_p (con->target))
1878 touch (actual_target, f->tstamp);
1880 else if (f->tstamp == -1)
1881 logprintf (LOG_NOTQUIET, _("%s: corrupt time-stamp.\n"),
1885 xfree (con->target);
1886 con->target = old_target;
1888 url_set_file (u, ofile);
1891 /* Break on fatals. */
1892 if (err == QUOTEXC || err == HOSTERR || err == FWRITEERR)
1894 con->cmd &= ~ (DO_CWD | DO_LOGIN);
1898 /* We do not want to call ftp_retrieve_dirs here */
1899 if (opt.recursive &&
1900 !(opt.reclevel != INFINITE_RECURSION && depth >= opt.reclevel))
1901 err = ftp_retrieve_dirs (u, orig, con);
1902 else if (opt.recursive)
1903 DEBUGP ((_("Will not retrieve dirs since depth is %d (max %d).\n"),
1904 depth, opt.reclevel));
1909 /* Retrieve the directories given in a file list. This function works
1910 by simply going through the linked list and calling
1911 ftp_retrieve_glob on each directory entry. The function knows
1912 about excluded directories. */
1914 ftp_retrieve_dirs (struct url *u, struct fileinfo *f, ccon *con)
1916 char *container = NULL;
1917 int container_size = 0;
1919 for (; f; f = f->next)
1922 char *odir, *newdir;
1924 if (opt.quota && total_downloaded_bytes > opt.quota)
1926 if (f->type != FT_DIRECTORY)
1929 /* Allocate u->dir off stack, but reallocate only if a larger
1930 string is needed. It's a pity there's no "realloca" for an
1931 item on the bottom of the stack. */
1932 size = strlen (u->dir) + 1 + strlen (f->name) + 1;
1933 if (size > container_size)
1934 container = (char *)alloca (size);
1939 || (*odir == '/' && *(odir + 1) == '\0'))
1940 /* If ODIR is empty or just "/", simply append f->name to
1941 ODIR. (In the former case, to preserve u->dir being
1942 relative; in the latter case, to avoid double slash.) */
1943 sprintf (newdir, "%s%s", odir, f->name);
1945 /* Else, use a separator. */
1946 sprintf (newdir, "%s/%s", odir, f->name);
1948 DEBUGP (("Composing new CWD relative to the initial directory.\n"));
1949 DEBUGP ((" odir = '%s'\n f->name = '%s'\n newdir = '%s'\n\n",
1950 odir, f->name, newdir));
1951 if (!accdir (newdir))
1953 logprintf (LOG_VERBOSE, _("\
1954 Not descending to %s as it is excluded/not-included.\n"),
1959 con->st &= ~DONE_CWD;
1961 odir = xstrdup (u->dir); /* because url_set_dir will free
1963 url_set_dir (u, newdir);
1964 ftp_retrieve_glob (u, con, GLOB_GETALL);
1965 url_set_dir (u, odir);
1968 /* Set the time-stamp? */
1971 if (opt.quota && total_downloaded_bytes > opt.quota)
1977 /* Return true if S has a leading '/' or contains '../' */
1979 has_insecure_name_p (const char *s)
1984 if (strstr (s, "../") != 0)
1990 /* A near-top-level function to retrieve the files in a directory.
1991 The function calls ftp_get_listing, to get a linked list of files.
1992 Then it weeds out the file names that do not match the pattern.
1993 ftp_retrieve_list is called with this updated list as an argument.
1995 If the argument ACTION is GLOB_GETONE, just download the file (but
1996 first get the listing, so that the time-stamp is heeded); if it's
1997 GLOB_GLOBALL, use globbing; if it's GLOB_GETALL, download the whole
2000 ftp_retrieve_glob (struct url *u, ccon *con, int action)
2002 struct fileinfo *f, *start;
2005 con->cmd |= LEAVE_PENDING;
2007 res = ftp_get_listing (u, con, &start);
2010 /* First: weed out that do not conform the global rules given in
2011 opt.accepts and opt.rejects. */
2012 if (opt.accepts || opt.rejects)
2017 if (f->type != FT_DIRECTORY && !acceptable (f->name))
2019 logprintf (LOG_VERBOSE, _("Rejecting %s.\n"),
2021 f = delelement (f, &start);
2027 /* Remove all files with possible harmful names */
2031 if (has_insecure_name_p (f->name))
2033 logprintf (LOG_VERBOSE, _("Rejecting %s.\n"),
2035 f = delelement (f, &start);
2040 /* Now weed out the files that do not match our globbing pattern.
2041 If we are dealing with a globbing pattern, that is. */
2044 if (action == GLOB_GLOBALL)
2046 int (*matcher) (const char *, const char *, int)
2047 = opt.ignore_case ? fnmatch_nocase : fnmatch;
2053 matchres = matcher (u->file, f->name, 0);
2056 logprintf (LOG_NOTQUIET, _("Error matching %s against %s: %s\n"),
2057 u->file, quotearg_style (escape_quoting_style, f->name),
2061 if (matchres == FNM_NOMATCH)
2062 f = delelement (f, &start); /* delete the element from the list */
2064 f = f->next; /* leave the element in the list */
2068 freefileinfo (start);
2069 return RETRBADPATTERN;
2072 else if (action == GLOB_GETONE)
2076 * Odd-ball compiler ("HP C V7.3-009 on OpenVMS Alpha V7.3-2")
2077 * bug causes spurious %CC-E-BADCONDIT complaint with this
2078 * "?:" statement. (Different linkage attributes for strcmp()
2079 * and strcasecmp().) Converting to "if" changes the
2080 * complaint to %CC-W-PTRMISMATCH on "cmp = strcmp;". Adding
2081 * the senseless type cast clears the complaint, and looks
2084 int (*cmp) (const char *, const char *)
2085 = opt.ignore_case ? strcasecmp : (int (*)())strcmp;
2086 #else /* def __VMS */
2087 int (*cmp) (const char *, const char *)
2088 = opt.ignore_case ? strcasecmp : strcmp;
2089 #endif /* def __VMS [else] */
2093 if (0 != cmp(u->file, f->name))
2094 f = delelement (f, &start);
2102 /* Just get everything. */
2103 ftp_retrieve_list (u, start, con);
2107 if (action == GLOB_GLOBALL)
2110 /* #### This message SUCKS. We should see what was the
2111 reason that nothing was retrieved. */
2112 logprintf (LOG_VERBOSE, _("No matches on pattern %s.\n"),
2115 else if (action == GLOB_GETONE) /* GLOB_GETONE or GLOB_GETALL */
2117 /* Let's try retrieving it anyway. */
2118 con->st |= ON_YOUR_OWN;
2119 res = ftp_loop_internal (u, NULL, con, NULL);
2123 /* If action == GLOB_GETALL, and the file list is empty, there's
2124 no point in trying to download anything or in complaining about
2125 it. (An empty directory should not cause complaints.)
2128 freefileinfo (start);
2129 if (opt.quota && total_downloaded_bytes > opt.quota)
2132 /* #### Should we return `res' here? */
2136 /* The wrapper that calls an appropriate routine according to contents
2137 of URL. Inherently, its capabilities are limited on what can be
2138 encoded into a URL. */
2140 ftp_loop (struct url *u, char **local_file, int *dt, struct url *proxy,
2141 bool recursive, bool glob)
2143 ccon con; /* FTP connection */
2151 con.st = ON_YOUR_OWN;
2156 /* If the file name is empty, the user probably wants a directory
2157 index. We'll provide one, properly HTML-ized. Unless
2158 opt.htmlify is 0, of course. :-) */
2159 if (!*u->file && !recursive)
2162 res = ftp_get_listing (u, &con, &f);
2166 if (opt.htmlify && !opt.spider)
2168 char *filename = (opt.output_document
2169 ? xstrdup (opt.output_document)
2170 : (con.target ? xstrdup (con.target)
2171 : url_file_name (u)));
2172 res = ftp_index (filename, u, f);
2173 if (res == FTPOK && opt.verbose)
2175 if (!opt.output_document)
2179 if (stat (filename, &st) == 0)
2183 logprintf (LOG_NOTQUIET,
2184 _("Wrote HTML-ized index to %s [%s].\n"),
2185 quote (filename), number_to_static_string (sz));
2188 logprintf (LOG_NOTQUIET,
2189 _("Wrote HTML-ized index to %s.\n"),
2199 bool ispattern = false;
2202 /* Treat the URL as a pattern if the file name part of the
2203 URL path contains wildcards. (Don't check for u->file
2204 because it is unescaped and therefore doesn't leave users
2205 the option to escape literal '*' as %2A.) */
2206 char *file_part = strrchr (u->path, '/');
2208 file_part = u->path;
2209 ispattern = has_wildcards_p (file_part);
2211 if (ispattern || recursive || opt.timestamping)
2213 /* ftp_retrieve_glob is a catch-all function that gets called
2214 if we need globbing, time-stamping or recursion. Its
2215 third argument is just what we really need. */
2216 res = ftp_retrieve_glob (u, &con,
2217 ispattern ? GLOB_GLOBALL : GLOB_GETONE);
2220 res = ftp_loop_internal (u, NULL, &con, local_file);
2226 /* If a connection was left, quench it. */
2227 if (con.csock != -1)
2228 fd_close (con.csock);
2229 xfree_null (con.id);
2231 xfree_null (con.target);
2236 /* Delete an element from the fileinfo linked list. Returns the
2237 address of the next element, or NULL if the list is exhausted. It
2238 can modify the start of the list. */
2239 static struct fileinfo *
2240 delelement (struct fileinfo *f, struct fileinfo **start)
2242 struct fileinfo *prev = f->prev;
2243 struct fileinfo *next = f->next;
2246 xfree_null (f->linkto);
2258 /* Free the fileinfo linked list of files. */
2260 freefileinfo (struct fileinfo *f)
2264 struct fileinfo *next = f->next;