1 /* File Transfer Protocol support.
2 Copyright (C) 1995, 1996, 1997, 1998 Free Software Foundation, Inc.
4 This file is part of Wget.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
33 #include <sys/types.h>
56 /* File where the "ls -al" listing will be saved. */
57 #define LIST_FILENAME ".listing"
59 extern char ftp_last_respline[];
61 /* Look for regexp "( *[0-9]+ *byte" (literal parenthesis) anywhere in
62 the string S, and return the number converted to long, if found, 0
65 ftp_expected_bytes (const char *s)
71 while (*s && *s != '(')
75 for (++s; *s && ISSPACE (*s); s++);
83 res = (*s - '0') + 10 * res;
86 while (*s && ISDIGIT (*s));
89 while (*s && ISSPACE (*s))
93 if (TOLOWER (*s) != 'b')
95 if (strncasecmp (s, "byte", 4))
103 /* Retrieves a file with denoted parameters through opening an FTP
104 connection to the server. It always closes the data connection,
105 and closes the control connection in case of error. */
107 getftp (const struct urlinfo *u, long *len, long restval, ccon *con)
109 int csock, dtsock, res;
112 char *user, *passwd, *respline;
114 unsigned char pasv_addr[6];
116 int passive_mode_open = 0;
117 long expected_bytes = 0L;
119 assert (con != NULL);
120 assert (u->local != NULL);
121 /* Debug-check of the sanity of the request by making sure that LIST
122 and RETR are never both requested (since we can handle only one
124 assert (!((cmd & DO_LIST) && (cmd & DO_RETR)));
125 /* Make sure that at least *something* is requested. */
126 assert ((cmd & (DO_LIST | DO_CWD | DO_RETR | DO_LOGIN)) != 0);
130 search_netrc (u->host, (const char **)&user, (const char **)&passwd, 1);
131 user = user ? user : opt.ftp_acc;
133 opt.ftp_pass = xstrdup (ftp_getaddress ());
134 passwd = passwd ? passwd : opt.ftp_pass;
135 assert (user && passwd);
140 if (!(cmd & DO_LOGIN))
141 csock = RBUF_FD (&con->rbuf);
142 else /* cmd & DO_LOGIN */
144 /* Login to the server: */
146 /* First: Establish the control connection. */
147 logprintf (LOG_VERBOSE, _("Connecting to %s:%hu... "), u->host, u->port);
148 err = make_connection (&csock, u->host, u->port);
149 if (cmd & LEAVE_PENDING)
150 rbuf_initialize (&con->rbuf, csock);
152 rbuf_uninitialize (&con->rbuf);
155 /* Do not close the socket in first several cases, since it
156 wasn't created at all. */
158 logputs (LOG_VERBOSE, "\n");
159 logprintf (LOG_NOTQUIET, "%s: %s\n", u->host, herrmsg (h_errno));
163 logputs (LOG_VERBOSE, "\n");
164 logprintf (LOG_NOTQUIET, "socket: %s\n", strerror (errno));
168 logputs (LOG_VERBOSE, "\n");
169 logprintf (LOG_NOTQUIET, _("Connection to %s:%hu refused.\n"),
172 rbuf_uninitialize (&con->rbuf);
175 logputs (LOG_VERBOSE, "\n");
176 logprintf (LOG_NOTQUIET, "connect: %s\n", strerror (errno));
178 rbuf_uninitialize (&con->rbuf);
185 /* Since this is a new connection, we may safely discard
186 anything left in the buffer. */
187 rbuf_discard (&con->rbuf);
189 /* Second: Login with proper USER/PASS sequence. */
190 logputs (LOG_VERBOSE, _("connected!\n"));
191 logprintf (LOG_VERBOSE, _("Logging in as %s ... "), user);
192 if (opt.server_response)
193 logputs (LOG_ALWAYS, "\n");
194 err = ftp_login (&con->rbuf, user, passwd);
195 /* FTPRERR, FTPSRVERR, WRITEFAILED, FTPLOGREFUSED, FTPLOGINC */
199 logputs (LOG_VERBOSE, "\n");
200 logputs (LOG_NOTQUIET, _("\
201 Error in server response, closing control connection.\n"));
203 rbuf_uninitialize (&con->rbuf);
207 logputs (LOG_VERBOSE, "\n");
208 logputs (LOG_NOTQUIET, _("Error in server greeting.\n"));
210 rbuf_uninitialize (&con->rbuf);
214 logputs (LOG_VERBOSE, "\n");
215 logputs (LOG_NOTQUIET,
216 _("Write failed, closing control connection.\n"));
218 rbuf_uninitialize (&con->rbuf);
222 logputs (LOG_VERBOSE, "\n");
223 logputs (LOG_NOTQUIET, _("The server refuses login.\n"));
225 rbuf_uninitialize (&con->rbuf);
226 return FTPLOGREFUSED;
229 logputs (LOG_VERBOSE, "\n");
230 logputs (LOG_NOTQUIET, _("Login incorrect.\n"));
232 rbuf_uninitialize (&con->rbuf);
236 if (!opt.server_response)
237 logputs (LOG_VERBOSE, _("Logged in!\n"));
244 /* Third: Set type to Image (binary). */
245 if (!opt.server_response)
246 logprintf (LOG_VERBOSE, "==> TYPE %c ... ", TOUPPER (u->ftp_type));
247 err = ftp_type (&con->rbuf, TOUPPER (u->ftp_type));
248 /* FTPRERR, WRITEFAILED, FTPUNKNOWNTYPE */
252 logputs (LOG_VERBOSE, "\n");
253 logputs (LOG_NOTQUIET, _("\
254 Error in server response, closing control connection.\n"));
256 rbuf_uninitialize (&con->rbuf);
260 logputs (LOG_VERBOSE, "\n");
261 logputs (LOG_NOTQUIET,
262 _("Write failed, closing control connection.\n"));
264 rbuf_uninitialize (&con->rbuf);
268 logputs (LOG_VERBOSE, "\n");
269 logprintf (LOG_NOTQUIET,
270 _("Unknown type `%c', closing control connection.\n"),
271 TOUPPER (u->ftp_type));
273 rbuf_uninitialize (&con->rbuf);
276 /* Everything is OK. */
282 if (!opt.server_response)
283 logputs (LOG_VERBOSE, _("done. "));
289 logputs (LOG_VERBOSE, _("==> CWD not needed.\n"));
292 /* Change working directory. */
293 if (!opt.server_response)
294 logprintf (LOG_VERBOSE, "==> CWD %s ... ", u->dir);
295 err = ftp_cwd (&con->rbuf, u->dir);
296 /* FTPRERR, WRITEFAILED, FTPNSFOD */
300 logputs (LOG_VERBOSE, "\n");
301 logputs (LOG_NOTQUIET, _("\
302 Error in server response, closing control connection.\n"));
304 rbuf_uninitialize (&con->rbuf);
308 logputs (LOG_VERBOSE, "\n");
309 logputs (LOG_NOTQUIET,
310 _("Write failed, closing control connection.\n"));
312 rbuf_uninitialize (&con->rbuf);
316 logputs (LOG_VERBOSE, "\n");
317 logprintf (LOG_NOTQUIET, _("No such directory `%s'.\n\n"),
320 rbuf_uninitialize (&con->rbuf);
330 if (!opt.server_response)
331 logputs (LOG_VERBOSE, _("done.\n"));
334 else /* do not CWD */
335 logputs (LOG_VERBOSE, _("==> CWD not required.\n"));
337 /* If anything is to be retrieved, PORT (or PASV) must be sent. */
338 if (cmd & (DO_LIST | DO_RETR))
340 if (opt.ftp_pasv > 0)
343 unsigned short tport;
345 if (!opt.server_response)
346 logputs (LOG_VERBOSE, "==> PASV ... ");
347 err = ftp_pasv (&con->rbuf, pasv_addr);
348 /* FTPRERR, WRITEFAILED, FTPNOPASV, FTPINVPASV */
352 logputs (LOG_VERBOSE, "\n");
353 logputs (LOG_NOTQUIET, _("\
354 Error in server response, closing control connection.\n"));
356 rbuf_uninitialize (&con->rbuf);
360 logputs (LOG_VERBOSE, "\n");
361 logputs (LOG_NOTQUIET,
362 _("Write failed, closing control connection.\n"));
364 rbuf_uninitialize (&con->rbuf);
368 logputs (LOG_VERBOSE, "\n");
369 logputs (LOG_NOTQUIET, _("Cannot initiate PASV transfer.\n"));
372 logputs (LOG_VERBOSE, "\n");
373 logputs (LOG_NOTQUIET, _("Cannot parse PASV response.\n"));
384 sprintf (thost, "%d.%d.%d.%d",
385 pasv_addr[0], pasv_addr[1], pasv_addr[2], pasv_addr[3]);
386 tport = (pasv_addr[4] << 8) + pasv_addr[5];
387 DEBUGP ((_("Will try connecting to %s:%hu.\n"), thost, tport));
388 err = make_connection (&dtsock, thost, tport);
391 /* Do not close the socket in first several cases,
392 since it wasn't created at all. */
394 logputs (LOG_VERBOSE, "\n");
395 logprintf (LOG_NOTQUIET, "%s: %s\n", thost,
398 rbuf_uninitialize (&con->rbuf);
402 logputs (LOG_VERBOSE, "\n");
403 logprintf (LOG_NOTQUIET, "socket: %s\n", strerror (errno));
405 rbuf_uninitialize (&con->rbuf);
409 logputs (LOG_VERBOSE, "\n");
410 logprintf (LOG_NOTQUIET,
411 _("Connection to %s:%hu refused.\n"),
414 rbuf_uninitialize (&con->rbuf);
418 logputs (LOG_VERBOSE, "\n");
419 logprintf (LOG_NOTQUIET, "connect: %s\n",
422 rbuf_uninitialize (&con->rbuf);
430 passive_mode_open= 1; /* Flag to avoid accept port */
431 if (!opt.server_response)
432 logputs (LOG_VERBOSE, _("done. "));
436 if (!passive_mode_open) /* Try to use a port command if PASV failed */
438 if (!opt.server_response)
439 logputs (LOG_VERBOSE, "==> PORT ... ");
440 err = ftp_port (&con->rbuf);
441 /* FTPRERR, WRITEFAILED, bindport (CONSOCKERR, CONPORTERR, BINDERR,
442 LISTENERR), HOSTERR, FTPPORTERR */
446 logputs (LOG_VERBOSE, "\n");
447 logputs (LOG_NOTQUIET, _("\
448 Error in server response, closing control connection.\n"));
451 rbuf_uninitialize (&con->rbuf);
455 logputs (LOG_VERBOSE, "\n");
456 logputs (LOG_NOTQUIET,
457 _("Write failed, closing control connection.\n"));
460 rbuf_uninitialize (&con->rbuf);
464 logputs (LOG_VERBOSE, "\n");
465 logprintf (LOG_NOTQUIET, "socket: %s\n", strerror (errno));
468 rbuf_uninitialize (&con->rbuf);
471 case CONPORTERR: case BINDERR: case LISTENERR:
472 /* What now? These problems are local... */
473 logputs (LOG_VERBOSE, "\n");
474 logprintf (LOG_NOTQUIET, _("Bind error (%s).\n"),
480 logputs (LOG_VERBOSE, "\n");
481 logprintf (LOG_NOTQUIET, "%s: %s\n", u->host,
485 rbuf_uninitialize (&con->rbuf);
489 logputs (LOG_VERBOSE, "\n");
490 logputs (LOG_NOTQUIET, _("Invalid PORT.\n"));
493 rbuf_uninitialize (&con->rbuf);
503 if (!opt.server_response)
504 logputs (LOG_VERBOSE, _("done. "));
506 } /* cmd & (DO_LIST | DO_RETR) */
508 /* Restart if needed. */
509 if (restval && (cmd & DO_RETR))
511 if (!opt.server_response)
512 logprintf (LOG_VERBOSE, "==> REST %ld ... ", restval);
513 err = ftp_rest (&con->rbuf, restval);
515 /* FTPRERR, WRITEFAILED, FTPRESTFAIL */
519 logputs (LOG_VERBOSE, "\n");
520 logputs (LOG_NOTQUIET, _("\
521 Error in server response, closing control connection.\n"));
524 rbuf_uninitialize (&con->rbuf);
528 logputs (LOG_VERBOSE, "\n");
529 logputs (LOG_NOTQUIET,
530 _("Write failed, closing control connection.\n"));
533 rbuf_uninitialize (&con->rbuf);
537 logputs (LOG_VERBOSE, _("\nREST failed, starting from scratch.\n"));
547 if (err != FTPRESTFAIL && !opt.server_response)
548 logputs (LOG_VERBOSE, _("done. "));
549 } /* restval && cmd & DO_RETR */
555 if (!opt.server_response)
558 logputs (LOG_VERBOSE, "\n");
559 logprintf (LOG_VERBOSE, "==> RETR %s ... ", u->file);
562 err = ftp_retr (&con->rbuf, u->file);
563 /* FTPRERR, WRITEFAILED, FTPNSFOD */
567 logputs (LOG_VERBOSE, "\n");
568 logputs (LOG_NOTQUIET, _("\
569 Error in server response, closing control connection.\n"));
572 rbuf_uninitialize (&con->rbuf);
576 logputs (LOG_VERBOSE, "\n");
577 logputs (LOG_NOTQUIET,
578 _("Write failed, closing control connection.\n"));
581 rbuf_uninitialize (&con->rbuf);
585 logputs (LOG_VERBOSE, "\n");
586 logprintf (LOG_NOTQUIET, _("No such file `%s'.\n\n"), u->file);
598 if (!opt.server_response)
599 logputs (LOG_VERBOSE, _("done.\n"));
600 expected_bytes = ftp_expected_bytes (ftp_last_respline);
605 if (!opt.server_response)
606 logputs (LOG_VERBOSE, "==> LIST ... ");
607 /* As Maciej W. Rozycki (macro@ds2.pg.gda.pl) says, `LIST'
608 without arguments is better than `LIST .'; confirmed by
610 err = ftp_list (&con->rbuf, NULL);
611 /* FTPRERR, WRITEFAILED */
615 logputs (LOG_VERBOSE, "\n");
616 logputs (LOG_NOTQUIET, _("\
617 Error in server response, closing control connection.\n"));
620 rbuf_uninitialize (&con->rbuf);
624 logputs (LOG_VERBOSE, "\n");
625 logputs (LOG_NOTQUIET,
626 _("Write failed, closing control connection.\n"));
629 rbuf_uninitialize (&con->rbuf);
633 logputs (LOG_VERBOSE, "\n");
634 logprintf (LOG_NOTQUIET, _("No such file or directory `%s'.\n\n"),
646 if (!opt.server_response)
647 logputs (LOG_VERBOSE, _("done.\n"));
648 expected_bytes = ftp_expected_bytes (ftp_last_respline);
649 } /* cmd & DO_LIST */
651 /* Some FTP servers return the total length of file after REST
652 command, others just return the remaining size. */
653 if (*len && restval && expected_bytes
654 && (expected_bytes == *len - restval))
656 DEBUGP (("Lying FTP server found, adjusting.\n"));
657 expected_bytes = *len;
660 /* If no transmission was required, then everything is OK. */
661 if (!(cmd & (DO_LIST | DO_RETR)))
664 if (!passive_mode_open) /* we are not using pasive mode so we need
667 /* Open the data transmission socket by calling acceptport(). */
668 err = acceptport (&dtsock);
669 /* Possible errors: ACCEPTERR. */
670 if (err == ACCEPTERR)
672 logprintf (LOG_NOTQUIET, "accept: %s\n", strerror (errno));
677 /* Open the file -- if opt.dfp is set, use it instead. */
678 if (!opt.dfp || con->cmd & DO_LIST)
680 mkalldirs (u->local);
682 rotate_backups (u->local);
683 /* #### Is this correct? */
684 chmod (u->local, 0600);
686 fp = fopen (u->local, restval ? "ab" : "wb");
689 logprintf (LOG_NOTQUIET, "%s: %s\n", u->local, strerror (errno));
691 rbuf_uninitialize (&con->rbuf);
701 /* This will silently fail for streams that don't correspond
702 to regular files, but that's OK. */
710 logprintf (LOG_VERBOSE, _("Length: %s"), legible (*len));
712 logprintf (LOG_VERBOSE, _(" [%s to go]"), legible (*len - restval));
713 logputs (LOG_VERBOSE, "\n");
715 else if (expected_bytes)
717 logprintf (LOG_VERBOSE, _("Length: %s"), legible (expected_bytes));
719 logprintf (LOG_VERBOSE, _(" [%s to go]"),
720 legible (expected_bytes - restval));
721 logputs (LOG_VERBOSE, _(" (unauthoritative)\n"));
724 /* Get the contents of the document. */
725 res = get_contents (dtsock, fp, len, restval, expected_bytes, &con->rbuf);
726 con->dltime = elapsed_time ();
727 tms = time_str (NULL);
728 tmrate = rate (*len - restval, con->dltime);
729 /* Close data connection socket. */
731 /* Close the local file. */
733 /* Close or flush the file. We have to be careful to check for
734 error here. Checking the result of fwrite() is not enough --
735 errors could go unnoticed! */
737 if (!opt.dfp || con->cmd & DO_LIST)
738 flush_res = fclose (fp);
740 flush_res = fflush (fp);
741 if (flush_res == EOF)
744 /* If get_contents couldn't write to fp, bail out. */
747 logprintf (LOG_NOTQUIET, _("%s: %s, closing control connection.\n"),
748 u->local, strerror (errno));
750 rbuf_uninitialize (&con->rbuf);
755 logprintf (LOG_NOTQUIET, _("%s (%s) - Data connection: %s; "),
756 tms, tmrate, strerror (errno));
757 if (opt.server_response)
758 logputs (LOG_ALWAYS, "\n");
761 /* Get the server to tell us if everything is retrieved. */
762 err = ftp_response (&con->rbuf, &respline);
763 /* ...and empty the buffer. */
764 rbuf_discard (&con->rbuf);
768 /* The control connection is decidedly closed. Print the time
769 only if it hasn't already been printed. */
771 logprintf (LOG_NOTQUIET, "%s (%s) - ", tms, tmrate);
772 logputs (LOG_NOTQUIET, _("Control connection closed.\n"));
773 /* If there is an error on the control connection, close it, but
774 return FTPRETRINT, since there is a possibility that the
775 whole file was retrieved nevertheless (but that is for
776 ftp_loop_internal to decide). */
778 rbuf_uninitialize (&con->rbuf);
781 /* If retrieval failed for any reason, return FTPRETRINT, but do not
782 close socket, since the control connection is still alive. If
783 there is something wrong with the control connection, it will
784 become apparent later. */
785 if (*respline != '2')
789 logprintf (LOG_NOTQUIET, "%s (%s) - ", tms, tmrate);
790 logputs (LOG_NOTQUIET, _("Data transfer aborted.\n"));
797 /* What now? The data connection was erroneous, whereas the
798 response says everything is OK. We shall play it safe. */
802 if (!(cmd & LEAVE_PENDING))
804 /* I should probably send 'QUIT' and check for a reply, but this
805 is faster. #### Is it OK, though? */
807 rbuf_uninitialize (&con->rbuf);
809 /* If it was a listing, and opt.server_response is true,
811 if (opt.server_response && (con->cmd & DO_LIST))
813 mkalldirs (u->local);
814 fp = fopen (u->local, "r");
816 logprintf (LOG_ALWAYS, "%s: %s\n", u->local, strerror (errno));
820 /* The lines are being read with read_whole_line because of
821 no-buffering on opt.lfile. */
822 while ((line = read_whole_line (fp)))
824 logprintf (LOG_ALWAYS, "%s\n", line);
829 } /* con->cmd & DO_LIST && server_response */
834 /* A one-file FTP loop. This is the part where FTP retrieval is
835 retried, and retried, and retried, and...
837 This loop either gets commands from con, or (if ON_YOUR_OWN is
838 set), makes them up to retrieve the file given by the URL. */
840 ftp_loop_internal (struct urlinfo *u, struct fileinfo *f, ccon *con)
842 static int first_retrieval = 1;
846 char *tms, *tmrate, *locf;
851 u->local = url_filename (u);
853 if (opt.noclobber && file_exists_p (u->local))
855 logprintf (LOG_VERBOSE,
856 _("File `%s' already there, not retrieving.\n"), u->local);
857 /* If the file is there, we suppose it's retrieved OK. */
861 /* Remove it if it's a link. */
862 remove_link (u->local);
863 if (!opt.output_document)
866 locf = opt.output_document;
870 if (con->st & ON_YOUR_OWN)
871 con->st = ON_YOUR_OWN;
873 orig_lp = con->cmd & LEAVE_PENDING ? 1 : 0;
878 /* Increment the pass counter. */
880 /* Wait before the retrieval (unless this is the very first
882 Check if we are retrying or not, wait accordingly - HEH */
883 if (!first_retrieval && (opt.wait || (count && opt.waitretry)))
887 if (count<opt.waitretry)
890 sleep(opt.waitretry);
897 if (con->st & ON_YOUR_OWN)
900 con->cmd |= (DO_RETR | LEAVE_PENDING);
901 if (rbuf_initialized_p (&con->rbuf))
902 con->cmd &= ~ (DO_LOGIN | DO_CWD);
904 con->cmd |= (DO_LOGIN | DO_CWD);
906 else /* not on your own */
908 if (rbuf_initialized_p (&con->rbuf))
909 con->cmd &= ~DO_LOGIN;
911 con->cmd |= DO_LOGIN;
912 if (con->st & DONE_CWD)
917 /* Assume no restarting. */
919 if ((count > 1 || opt.always_rest)
920 && !(con->cmd & DO_LIST)
921 && file_exists_p (u->local))
922 if (stat (u->local, &st) == 0)
923 restval = st.st_size;
924 /* Get the current time string. */
925 tms = time_str (NULL);
926 /* Print fetch message, if opt.verbose. */
929 char *hurl = str_url (u->proxy ? u->proxy : u, 1);
933 sprintf (tmp, _("(try:%2d)"), count);
934 logprintf (LOG_VERBOSE, "--%s-- %s\n %s => `%s'\n",
935 tms, hurl, tmp, locf);
937 ws_changetitle (hurl, 1);
941 /* Send getftp the proper length, if fileinfo was provided. */
946 err = getftp (u, &len, restval, con);
948 tms = time_str (NULL);
949 tmrate = rate (len - restval, con->dltime);
951 if (!rbuf_initialized_p (&con->rbuf))
952 con->st &= ~DONE_CWD;
958 case HOSTERR: case CONREFUSED: case FWRITEERR: case FOPENERR:
959 case FTPNSFOD: case FTPLOGINC: case FTPNOPASV:
960 /* Fatal errors, give up. */
963 case CONSOCKERR: case CONERROR: case FTPSRVERR: case FTPRERR:
964 case WRITEFAILED: case FTPUNKNOWNTYPE: case CONPORTERR:
965 case BINDERR: case LISTENERR: case ACCEPTERR:
966 case FTPPORTERR: case FTPLOGREFUSED: case FTPINVPASV:
967 printwhat (count, opt.ntry);
968 /* non-fatal errors */
972 /* If the control connection was closed, the retrieval
973 will be considered OK if f->size == len. */
974 if (!f || len != f->size)
976 printwhat (count, opt.ntry);
988 /* If we get out of the switch above without continue'ing, we've
989 successfully downloaded a file. Remember this fact. */
990 downloaded_file(FILE_DOWNLOADED_NORMALLY, locf);
992 if (con->st & ON_YOUR_OWN)
994 CLOSE (RBUF_FD (&con->rbuf));
995 rbuf_uninitialize (&con->rbuf);
997 logprintf (LOG_VERBOSE, _("%s (%s) - `%s' saved [%ld]\n\n"),
998 tms, tmrate, locf, len);
999 logprintf (LOG_NONVERBOSE, "%s URL: %s [%ld] -> \"%s\" [%d]\n",
1000 tms, u->url, len, locf, count);
1002 if ((con->cmd & DO_LIST))
1003 /* This is a directory listing file. */
1005 if (!opt.remove_listing)
1006 /* --dont-remove-listing was specified, so do count this towards the
1007 number of bytes and files downloaded. */
1009 opt.downloaded += len;
1013 /* Deletion of listing files is not controlled by --delete-after, but
1014 by the more specific option --dont-remove-listing, and the code
1015 to do this deletion is in another function. */
1018 /* This is not a directory listing file. */
1020 /* Unlike directory listing files, don't pretend normal files weren't
1021 downloaded if they're going to be deleted. People seeding proxies,
1022 for instance, may want to know how many bytes and files they've
1023 downloaded through it. */
1024 opt.downloaded += len;
1027 if (opt.delete_after)
1029 DEBUGP (("Removing file due to --delete-after in"
1030 " ftp_loop_internal():\n"));
1031 logprintf (LOG_VERBOSE, _("Removing %s.\n"), locf);
1033 logprintf (LOG_NOTQUIET, "unlink: %s\n", strerror (errno));
1037 /* Restore the original leave-pendingness. */
1039 con->cmd |= LEAVE_PENDING;
1041 con->cmd &= ~LEAVE_PENDING;
1043 } while (!opt.ntry || (count < opt.ntry));
1045 if (rbuf_initialized_p (&con->rbuf) && (con->st & ON_YOUR_OWN))
1047 CLOSE (RBUF_FD (&con->rbuf));
1048 rbuf_uninitialize (&con->rbuf);
1053 /* Return the directory listing in a reusable format. The directory
1054 is specifed in u->dir. */
1055 static struct fileinfo *
1056 ftp_get_listing (struct urlinfo *u, ccon *con)
1060 char *olocal = u->local;
1061 char *list_filename, *ofile;
1063 con->st &= ~ON_YOUR_OWN;
1064 con->cmd |= (DO_LIST | LEAVE_PENDING);
1065 con->cmd &= ~DO_RETR;
1066 /* Get the listing filename. */
1068 u->file = LIST_FILENAME;
1069 list_filename = url_filename (u);
1071 u->local = list_filename;
1072 DEBUGP ((_("Using `%s' as listing tmp file.\n"), list_filename));
1073 err = ftp_loop_internal (u, NULL, con);
1076 f = ftp_parse_ls (list_filename);
1079 if (opt.remove_listing)
1081 if (unlink (list_filename))
1082 logprintf (LOG_NOTQUIET, "unlink: %s\n", strerror (errno));
1084 logprintf (LOG_VERBOSE, _("Removed `%s'.\n"), list_filename);
1086 free (list_filename);
1087 con->cmd &= ~DO_LIST;
1091 static uerr_t ftp_retrieve_dirs PARAMS ((struct urlinfo *, struct fileinfo *,
1093 static uerr_t ftp_retrieve_glob PARAMS ((struct urlinfo *, ccon *, int));
1094 static struct fileinfo *delelement PARAMS ((struct fileinfo *,
1095 struct fileinfo **));
1096 static void freefileinfo PARAMS ((struct fileinfo *f));
1098 /* Retrieve a list of files given in struct fileinfo linked list. If
1099 a file is a symbolic link, do not retrieve it, but rather try to
1100 set up a similar link on the local disk, if the symlinks are
1103 If opt.recursive is set, after all files have been retrieved,
1104 ftp_retrieve_dirs will be called to retrieve the directories. */
1106 ftp_retrieve_list (struct urlinfo *u, struct fileinfo *f, ccon *con)
1108 static int depth = 0;
1110 char *olocal, *ofile;
1111 struct fileinfo *orig;
1116 /* Increase the depth. */
1118 if (opt.reclevel != INFINITE_RECURSION && depth > opt.reclevel)
1120 DEBUGP ((_("Recursion depth %d exceeded max. depth %d.\n"),
1121 depth, opt.reclevel));
1129 con->st &= ~ON_YOUR_OWN;
1130 if (!(con->st & DONE_CWD))
1133 con->cmd &= ~DO_CWD;
1134 con->cmd |= (DO_RETR | LEAVE_PENDING);
1136 if (!rbuf_initialized_p (&con->rbuf))
1137 con->cmd |= DO_LOGIN;
1139 con->cmd &= ~DO_LOGIN;
1141 err = RETROK; /* in case it's not used */
1145 if (opt.quota && opt.downloaded > opt.quota)
1153 u->local = url_filename (u);
1157 if (opt.timestamping && f->type == FT_PLAINFILE)
1160 /* If conversion of HTML files retrieved via FTP is ever implemented,
1161 we'll need to stat() <file>.orig here when -K has been specified.
1162 I'm not implementing it now since files on an FTP server are much
1163 more likely than files on an HTTP server to legitimately have a
1165 if (!stat (u->local, &st))
1167 /* Else, get it from the file. */
1168 local_size = st.st_size;
1170 if (local_size == f->size && tml >= f->tstamp)
1172 logprintf (LOG_VERBOSE, _("\
1173 Server file no newer than local file `%s' -- not retrieving.\n\n"), u->local);
1176 else if (local_size != f->size)
1178 logprintf (LOG_VERBOSE, _("\
1179 The sizes do not match (local %ld) -- retrieving.\n"), local_size);
1182 } /* opt.timestamping && f->type == FT_PLAINFILE */
1186 /* If opt.retr_symlinks is defined, we treat symlinks as
1187 if they were normal files. There is currently no way
1188 to distinguish whether they might be directories, and
1190 if (!opt.retr_symlinks)
1194 logputs (LOG_NOTQUIET,
1195 _("Invalid name of the symlink, skipping.\n"));
1199 /* Check whether we already have the correct
1201 int rc = lstat (u->local, &st);
1204 size_t len = strlen (f->linkto) + 1;
1205 if (S_ISLNK (st.st_mode))
1207 char *link_target = (char *)alloca (len);
1208 size_t n = readlink (u->local, link_target, len);
1210 && (memcmp (link_target, f->linkto, n) == 0))
1212 logprintf (LOG_VERBOSE, _("\
1213 Already have correct symlink %s -> %s\n\n"),
1214 u->local, f->linkto);
1220 logprintf (LOG_VERBOSE, _("Creating symlink %s -> %s\n"),
1221 u->local, f->linkto);
1222 /* Unlink before creating symlink! */
1224 if (symlink (f->linkto, u->local) == -1)
1225 logprintf (LOG_NOTQUIET, "symlink: %s\n",
1227 logputs (LOG_VERBOSE, "\n");
1228 } /* have f->linkto */
1229 #else /* not HAVE_SYMLINK */
1230 logprintf (LOG_NOTQUIET,
1231 _("Symlinks not supported, skipping symlink `%s'.\n"),
1233 #endif /* not HAVE_SYMLINK */
1235 else /* opt.retr_symlinks */
1238 err = ftp_loop_internal (u, f, con);
1239 } /* opt.retr_symlinks */
1243 logprintf (LOG_NOTQUIET, _("Skipping directory `%s'.\n"),
1247 /* Call the retrieve loop. */
1249 err = ftp_loop_internal (u, f, con);
1252 logprintf (LOG_NOTQUIET, _("%s: unknown/unsupported file type.\n"),
1257 /* Set the time-stamp information to the local file. Symlinks
1258 are not to be stamped because it sets the stamp on the
1261 && !(f->type == FT_SYMLINK && !opt.retr_symlinks)
1264 && file_exists_p (u->local))
1266 touch (u->local, f->tstamp);
1268 else if (f->tstamp == -1)
1269 logprintf (LOG_NOTQUIET, _("%s: corrupt time-stamp.\n"), u->local);
1271 if (f->perms && f->type == FT_PLAINFILE && dlthis)
1272 chmod (u->local, f->perms);
1274 DEBUGP (("Unrecognized permissions for %s.\n", u->local));
1279 /* Break on fatals. */
1280 if (err == QUOTEXC || err == HOSTERR || err == FWRITEERR)
1282 con->cmd &= ~ (DO_CWD | DO_LOGIN);
1285 /* We do not want to call ftp_retrieve_dirs here */
1286 if (opt.recursive &&
1287 !(opt.reclevel != INFINITE_RECURSION && depth >= opt.reclevel))
1288 err = ftp_retrieve_dirs (u, orig, con);
1289 else if (opt.recursive)
1290 DEBUGP ((_("Will not retrieve dirs since depth is %d (max %d).\n"),
1291 depth, opt.reclevel));
1296 /* Retrieve the directories given in a file list. This function works
1297 by simply going through the linked list and calling
1298 ftp_retrieve_glob on each directory entry. The function knows
1299 about excluded directories. */
1301 ftp_retrieve_dirs (struct urlinfo *u, struct fileinfo *f, ccon *con)
1304 char *current_container = NULL;
1305 int current_length = 0;
1307 for (; f; f = f->next)
1311 if (opt.quota && opt.downloaded > opt.quota)
1313 if (f->type != FT_DIRECTORY)
1316 len = 1 + strlen (u->dir) + 1 + strlen (f->name) + 1;
1317 /* Allocate u->dir off stack, but reallocate only if a larger
1318 string is needed. */
1319 if (len > current_length)
1320 current_container = (char *)alloca (len);
1321 u->dir = current_container;
1322 /* When retrieving recursively, all directories must be
1323 absolute. This restriction will (hopefully!) be lifted in
1325 sprintf (u->dir, "/%s%s%s", odir + (*odir == '/'),
1326 (!*odir || (*odir == '/' && !* (odir + 1))) ? "" : "/", f->name);
1327 if (!accdir (u->dir, ALLABS))
1329 logprintf (LOG_VERBOSE, _("\
1330 Not descending to `%s' as it is excluded/not-included.\n"), u->dir);
1334 con->st &= ~DONE_CWD;
1335 ftp_retrieve_glob (u, con, GETALL);
1336 /* Set the time-stamp? */
1339 if (opt.quota && opt.downloaded > opt.quota)
1346 /* A near-top-level function to retrieve the files in a directory.
1347 The function calls ftp_get_listing, to get a linked list of files.
1348 Then it weeds out the file names that do not match the pattern.
1349 ftp_retrieve_list is called with this updated list as an argument.
1351 If the argument ACTION is GETONE, just download the file (but first
1352 get the listing, so that the time-stamp is heeded); if it's GLOBALL,
1353 use globbing; if it's GETALL, download the whole directory. */
1355 ftp_retrieve_glob (struct urlinfo *u, ccon *con, int action)
1357 struct fileinfo *orig, *start;
1360 con->cmd |= LEAVE_PENDING;
1362 orig = ftp_get_listing (u, con);
1364 /* First: weed out that do not conform the global rules given in
1365 opt.accepts and opt.rejects. */
1366 if (opt.accepts || opt.rejects)
1368 struct fileinfo *f = orig;
1372 if (f->type != FT_DIRECTORY && !acceptable (f->name))
1374 logprintf (LOG_VERBOSE, _("Rejecting `%s'.\n"), f->name);
1375 f = delelement (f, &start);
1381 /* Now weed out the files that do not match our globbing pattern.
1382 If we are dealing with a globbing pattern, that is. */
1383 if (*u->file && (action == GLOBALL || action == GETONE))
1386 struct fileinfo *f = start;
1390 matchres = fnmatch (u->file, f->name, 0);
1393 logprintf (LOG_NOTQUIET, "%s: %s\n", u->local,
1397 if (matchres == FNM_NOMATCH)
1398 f = delelement (f, &start); /* delete the element from the list */
1400 f = f->next; /* leave the element in the list */
1404 freefileinfo (start);
1405 return RETRBADPATTERN;
1411 /* Just get everything. */
1412 ftp_retrieve_list (u, start, con);
1416 if (action == GLOBALL)
1419 /* #### This message SUCKS. We should see what was the
1420 reason that nothing was retrieved. */
1421 logprintf (LOG_VERBOSE, _("No matches on pattern `%s'.\n"), u->file);
1423 else /* GETONE or GETALL */
1425 /* Let's try retrieving it anyway. */
1426 con->st |= ON_YOUR_OWN;
1427 res = ftp_loop_internal (u, NULL, con);
1431 freefileinfo (start);
1432 if (opt.quota && opt.downloaded > opt.quota)
1435 /* #### Should we return `res' here? */
1439 /* The wrapper that calls an appropriate routine according to contents
1440 of URL. Inherently, its capabilities are limited on what can be
1441 encoded into a URL. */
1443 ftp_loop (struct urlinfo *u, int *dt)
1445 ccon con; /* FTP connection */
1450 rbuf_uninitialize (&con.rbuf);
1451 con.st = ON_YOUR_OWN;
1452 res = RETROK; /* in case it's not used */
1454 /* If the file name is empty, the user probably wants a directory
1455 index. We'll provide one, properly HTML-ized. Unless
1456 opt.htmlify is 0, of course. :-) */
1457 if (!*u->file && !opt.recursive)
1459 struct fileinfo *f = ftp_get_listing (u, &con);
1465 char *filename = (opt.output_document
1466 ? xstrdup (opt.output_document)
1467 : (u->local ? xstrdup (u->local)
1468 : url_filename (u)));
1469 res = ftp_index (filename, u, f);
1470 if (res == FTPOK && opt.verbose)
1472 if (!opt.output_document)
1476 if (stat (filename, &st) == 0)
1480 logprintf (LOG_NOTQUIET,
1481 _("Wrote HTML-ized index to `%s' [%ld].\n"),
1485 logprintf (LOG_NOTQUIET,
1486 _("Wrote HTML-ized index to `%s'.\n"),
1496 int wild = has_wildcards_p (u->file);
1497 if ((opt.ftp_glob && wild) || opt.recursive || opt.timestamping)
1499 /* ftp_retrieve_glob is a catch-all function that gets called
1500 if we need globbing, time-stamping or recursion. Its
1501 third argument is just what we really need. */
1502 ftp_retrieve_glob (u, &con,
1503 (opt.ftp_glob && wild) ? GLOBALL : GETONE);
1506 res = ftp_loop_internal (u, NULL, &con);
1512 /* If a connection was left, quench it. */
1513 if (rbuf_initialized_p (&con.rbuf))
1514 CLOSE (RBUF_FD (&con.rbuf));
1518 /* Delete an element from the fileinfo linked list. Returns the
1519 address of the next element, or NULL if the list is exhausted. It
1520 can modify the start of the list. */
1521 static struct fileinfo *
1522 delelement (struct fileinfo *f, struct fileinfo **start)
1524 struct fileinfo *prev = f->prev;
1525 struct fileinfo *next = f->next;
1528 FREE_MAYBE (f->linkto);
1540 /* Free the fileinfo linked list of files. */
1542 freefileinfo (struct fileinfo *f)
1546 struct fileinfo *next = f->next;