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 /* If no transmission was required, then everything is OK. */
652 if (!(cmd & (DO_LIST | DO_RETR)))
655 if (!passive_mode_open) /* we are not using pasive mode so we need
658 /* Open the data transmission socket by calling acceptport(). */
659 err = acceptport (&dtsock);
660 /* Possible errors: ACCEPTERR. */
661 if (err == ACCEPTERR)
663 logprintf (LOG_NOTQUIET, "accept: %s\n", strerror (errno));
668 /* Open the file -- if opt.dfp is set, use it instead. */
669 if (!opt.dfp || con->cmd & DO_LIST)
671 mkalldirs (u->local);
673 rotate_backups (u->local);
674 /* #### Is this correct? */
675 chmod (u->local, 0600);
677 fp = fopen (u->local, restval ? "ab" : "wb");
680 logprintf (LOG_NOTQUIET, "%s: %s\n", u->local, strerror (errno));
682 rbuf_uninitialize (&con->rbuf);
690 /* Some FTP servers return the total length of file after REST command,
691 others just return the remaining size. */
692 if (*len && restval && expected_bytes
693 && (expected_bytes == *len - restval))
695 DEBUGP (("Lying FTP server found, adjusting.\n"));
696 expected_bytes = *len;
701 logprintf (LOG_VERBOSE, _("Length: %s"), legible (*len));
703 logprintf (LOG_VERBOSE, _(" [%s to go]"), legible (*len - restval));
704 logputs (LOG_VERBOSE, "\n");
706 else if (expected_bytes)
708 logprintf (LOG_VERBOSE, _("Length: %s"), legible (expected_bytes));
710 logprintf (LOG_VERBOSE, _(" [%s to go]"),
711 legible (expected_bytes - restval));
712 logputs (LOG_VERBOSE, _(" (unauthoritative)\n"));
715 /* Get the contents of the document. */
716 res = get_contents (dtsock, fp, len, restval, expected_bytes, &con->rbuf);
717 con->dltime = elapsed_time ();
718 tms = time_str (NULL);
719 tmrate = rate (*len - restval, con->dltime);
720 /* Close data connection socket. */
722 /* Close the local file. */
724 /* Close or flush the file. We have to be careful to check for
725 error here. Checking the result of fwrite() is not enough --
726 errors could go unnoticed! */
728 if (!opt.dfp || con->cmd & DO_LIST)
729 flush_res = fclose (fp);
731 flush_res = fflush (fp);
732 if (flush_res == EOF)
735 /* If get_contents couldn't write to fp, bail out. */
738 logprintf (LOG_NOTQUIET, _("%s: %s, closing control connection.\n"),
739 u->local, strerror (errno));
741 rbuf_uninitialize (&con->rbuf);
746 logprintf (LOG_NOTQUIET, _("%s (%s) - Data connection: %s; "),
747 tms, tmrate, strerror (errno));
748 if (opt.server_response)
749 logputs (LOG_ALWAYS, "\n");
752 /* Get the server to tell us if everything is retrieved. */
753 err = ftp_response (&con->rbuf, &respline);
754 /* ...and empty the buffer. */
755 rbuf_discard (&con->rbuf);
759 /* The control connection is decidedly closed. Print the time
760 only if it hasn't already been printed. */
762 logprintf (LOG_NOTQUIET, "%s (%s) - ", tms, tmrate);
763 logputs (LOG_NOTQUIET, _("Control connection closed.\n"));
764 /* If there is an error on the control connection, close it, but
765 return FTPRETRINT, since there is a possibility that the
766 whole file was retrieved nevertheless (but that is for
767 ftp_loop_internal to decide). */
769 rbuf_uninitialize (&con->rbuf);
772 /* If retrieval failed for any reason, return FTPRETRINT, but do not
773 close socket, since the control connection is still alive. If
774 there is something wrong with the control connection, it will
775 become apparent later. */
776 if (*respline != '2')
780 logprintf (LOG_NOTQUIET, "%s (%s) - ", tms, tmrate);
781 logputs (LOG_NOTQUIET, _("Data transfer aborted.\n"));
788 /* What now? The data connection was erroneous, whereas the
789 response says everything is OK. We shall play it safe. */
793 if (!(cmd & LEAVE_PENDING))
795 /* I should probably send 'QUIT' and check for a reply, but this
796 is faster. #### Is it OK, though? */
798 rbuf_uninitialize (&con->rbuf);
800 /* If it was a listing, and opt.server_response is true,
802 if (opt.server_response && (con->cmd & DO_LIST))
804 mkalldirs (u->local);
805 fp = fopen (u->local, "r");
807 logprintf (LOG_ALWAYS, "%s: %s\n", u->local, strerror (errno));
811 /* The lines are being read with read_whole_line because of
812 no-buffering on opt.lfile. */
813 while ((line = read_whole_line (fp)))
815 logprintf (LOG_ALWAYS, "%s\n", line);
820 } /* con->cmd & DO_LIST && server_response */
825 /* A one-file FTP loop. This is the part where FTP retrieval is
826 retried, and retried, and retried, and...
828 This loop either gets commands from con, or (if ON_YOUR_OWN is
829 set), makes them up to retrieve the file given by the URL. */
831 ftp_loop_internal (struct urlinfo *u, struct fileinfo *f, ccon *con)
833 static int first_retrieval = 1;
837 char *tms, *tmrate, *locf;
842 u->local = url_filename (u);
844 if (opt.noclobber && file_exists_p (u->local))
846 logprintf (LOG_VERBOSE,
847 _("File `%s' already there, not retrieving.\n"), u->local);
848 /* If the file is there, we suppose it's retrieved OK. */
852 /* Remove it if it's a link. */
853 remove_link (u->local);
854 if (!opt.output_document)
857 locf = opt.output_document;
861 if (con->st & ON_YOUR_OWN)
862 con->st = ON_YOUR_OWN;
864 orig_lp = con->cmd & LEAVE_PENDING ? 1 : 0;
869 /* Increment the pass counter. */
871 /* Wait before the retrieval (unless this is the very first
873 Check if we are retrying or not, wait accordingly - HEH */
874 if (!first_retrieval && (opt.wait || (count && opt.waitretry)))
878 if (count<opt.waitretry)
881 sleep(opt.waitretry);
888 if (con->st & ON_YOUR_OWN)
891 con->cmd |= (DO_RETR | LEAVE_PENDING);
892 if (rbuf_initialized_p (&con->rbuf))
893 con->cmd &= ~ (DO_LOGIN | DO_CWD);
895 con->cmd |= (DO_LOGIN | DO_CWD);
897 else /* not on your own */
899 if (rbuf_initialized_p (&con->rbuf))
900 con->cmd &= ~DO_LOGIN;
902 con->cmd |= DO_LOGIN;
903 if (con->st & DONE_CWD)
908 /* Assume no restarting. */
910 if ((count > 1 || opt.always_rest)
911 && !(con->cmd & DO_LIST)
912 && file_exists_p (u->local))
913 if (stat (u->local, &st) == 0)
914 restval = st.st_size;
915 /* Get the current time string. */
916 tms = time_str (NULL);
917 /* Print fetch message, if opt.verbose. */
920 char *hurl = str_url (u->proxy ? u->proxy : u, 1);
924 sprintf (tmp, _("(try:%2d)"), count);
925 logprintf (LOG_VERBOSE, "--%s-- %s\n %s => `%s'\n",
926 tms, hurl, tmp, locf);
928 ws_changetitle (hurl, 1);
932 /* Send getftp the proper length, if fileinfo was provided. */
937 err = getftp (u, &len, restval, con);
939 tms = time_str (NULL);
940 tmrate = rate (len - restval, con->dltime);
942 if (!rbuf_initialized_p (&con->rbuf))
943 con->st &= ~DONE_CWD;
949 case HOSTERR: case CONREFUSED: case FWRITEERR: case FOPENERR:
950 case FTPNSFOD: case FTPLOGINC: case FTPNOPASV:
951 /* Fatal errors, give up. */
954 case CONSOCKERR: case CONERROR: case FTPSRVERR: case FTPRERR:
955 case WRITEFAILED: case FTPUNKNOWNTYPE: case CONPORTERR:
956 case BINDERR: case LISTENERR: case ACCEPTERR:
957 case FTPPORTERR: case FTPLOGREFUSED: case FTPINVPASV:
958 printwhat (count, opt.ntry);
959 /* non-fatal errors */
963 /* If the control connection was closed, the retrieval
964 will be considered OK if f->size == len. */
965 if (!f || len != f->size)
967 printwhat (count, opt.ntry);
979 /* If we get out of the switch above without continue'ing, we've
980 successfully downloaded a file. Remember this fact. */
981 downloaded_file(FILE_DOWNLOADED_NORMALLY, locf);
983 if (con->st & ON_YOUR_OWN)
985 CLOSE (RBUF_FD (&con->rbuf));
986 rbuf_uninitialize (&con->rbuf);
988 logprintf (LOG_VERBOSE, _("%s (%s) - `%s' saved [%ld]\n\n"),
989 tms, tmrate, locf, len);
990 logprintf (LOG_NONVERBOSE, "%s URL: %s [%ld] -> \"%s\" [%d]\n",
991 tms, u->url, len, locf, count);
992 /* Do not count listings among the downloaded stuff, since they
993 will get deleted anyway. */
994 if (!(con->cmd & DO_LIST))
997 opt.downloaded += len;
999 /* Restore the original leave-pendingness. */
1001 con->cmd |= LEAVE_PENDING;
1003 con->cmd &= ~LEAVE_PENDING;
1005 } while (!opt.ntry || (count < opt.ntry));
1007 if (rbuf_initialized_p (&con->rbuf) && (con->st & ON_YOUR_OWN))
1009 CLOSE (RBUF_FD (&con->rbuf));
1010 rbuf_uninitialize (&con->rbuf);
1015 /* Return the directory listing in a reusable format. The directory
1016 is specifed in u->dir. */
1017 static struct fileinfo *
1018 ftp_get_listing (struct urlinfo *u, ccon *con)
1022 char *olocal = u->local;
1023 char *list_filename, *ofile;
1025 con->st &= ~ON_YOUR_OWN;
1026 con->cmd |= (DO_LIST | LEAVE_PENDING);
1027 con->cmd &= ~DO_RETR;
1028 /* Get the listing filename. */
1030 u->file = LIST_FILENAME;
1031 list_filename = url_filename (u);
1033 u->local = list_filename;
1034 DEBUGP ((_("Using `%s' as listing tmp file.\n"), list_filename));
1035 err = ftp_loop_internal (u, NULL, con);
1038 f = ftp_parse_ls (list_filename);
1041 if (opt.remove_listing)
1043 if (unlink (list_filename))
1044 logprintf (LOG_NOTQUIET, "unlink: %s\n", strerror (errno));
1046 logprintf (LOG_VERBOSE, _("Removed `%s'.\n"), list_filename);
1048 free (list_filename);
1049 con->cmd &= ~DO_LIST;
1053 static uerr_t ftp_retrieve_dirs PARAMS ((struct urlinfo *, struct fileinfo *,
1055 static uerr_t ftp_retrieve_glob PARAMS ((struct urlinfo *, ccon *, int));
1056 static struct fileinfo *delelement PARAMS ((struct fileinfo *,
1057 struct fileinfo **));
1058 static void freefileinfo PARAMS ((struct fileinfo *f));
1060 /* Retrieve a list of files given in struct fileinfo linked list. If
1061 a file is a symbolic link, do not retrieve it, but rather try to
1062 set up a similar link on the local disk, if the symlinks are
1065 If opt.recursive is set, after all files have been retrieved,
1066 ftp_retrieve_dirs will be called to retrieve the directories. */
1068 ftp_retrieve_list (struct urlinfo *u, struct fileinfo *f, ccon *con)
1070 static int depth = 0;
1072 char *olocal, *ofile;
1073 struct fileinfo *orig;
1078 /* Increase the depth. */
1080 if (opt.reclevel != INFINITE_RECURSION && depth > opt.reclevel)
1082 DEBUGP ((_("Recursion depth %d exceeded max. depth %d.\n"),
1083 depth, opt.reclevel));
1091 con->st &= ~ON_YOUR_OWN;
1092 if (!(con->st & DONE_CWD))
1095 con->cmd &= ~DO_CWD;
1096 con->cmd |= (DO_RETR | LEAVE_PENDING);
1098 if (!rbuf_initialized_p (&con->rbuf))
1099 con->cmd |= DO_LOGIN;
1101 con->cmd &= ~DO_LOGIN;
1103 err = RETROK; /* in case it's not used */
1107 if (opt.quota && opt.downloaded > opt.quota)
1115 u->local = url_filename (u);
1119 if (opt.timestamping && f->type == FT_PLAINFILE)
1122 /* If conversion of HTML files retrieved via FTP is ever implemented,
1123 we'll need to stat() <file>.orig here when -K has been specified.
1124 I'm not implementing it now since files on an FTP server are much
1125 more likely than files on an HTTP server to legitimately have a
1127 if (!stat (u->local, &st))
1129 /* Else, get it from the file. */
1130 local_size = st.st_size;
1132 if (local_size == f->size && tml >= f->tstamp)
1134 logprintf (LOG_VERBOSE, _("\
1135 Server file no newer than local file `%s' -- not retrieving.\n\n"), u->local);
1138 else if (local_size != f->size)
1140 logprintf (LOG_VERBOSE, _("\
1141 The sizes do not match (local %ld) -- retrieving.\n"), local_size);
1144 } /* opt.timestamping && f->type == FT_PLAINFILE */
1148 /* If opt.retr_symlinks is defined, we treat symlinks as
1149 if they were normal files. There is currently no way
1150 to distinguish whether they might be directories, and
1152 if (!opt.retr_symlinks)
1156 logputs (LOG_NOTQUIET,
1157 _("Invalid name of the symlink, skipping.\n"));
1161 /* Check whether we already have the correct
1163 int rc = lstat (u->local, &st);
1166 size_t len = strlen (f->linkto) + 1;
1167 if (S_ISLNK (st.st_mode))
1169 char *link_target = (char *)alloca (len);
1170 size_t n = readlink (u->local, link_target, len);
1172 && (memcmp (link_target, f->linkto, n) == 0))
1174 logprintf (LOG_VERBOSE, _("\
1175 Already have correct symlink %s -> %s\n\n"),
1176 u->local, f->linkto);
1182 logprintf (LOG_VERBOSE, _("Creating symlink %s -> %s\n"),
1183 u->local, f->linkto);
1184 /* Unlink before creating symlink! */
1186 if (symlink (f->linkto, u->local) == -1)
1187 logprintf (LOG_NOTQUIET, "symlink: %s\n",
1189 logputs (LOG_VERBOSE, "\n");
1190 } /* have f->linkto */
1191 #else /* not HAVE_SYMLINK */
1192 logprintf (LOG_NOTQUIET,
1193 _("Symlinks not supported, skipping symlink `%s'.\n"),
1195 #endif /* not HAVE_SYMLINK */
1197 else /* opt.retr_symlinks */
1200 err = ftp_loop_internal (u, f, con);
1201 } /* opt.retr_symlinks */
1205 logprintf (LOG_NOTQUIET, _("Skipping directory `%s'.\n"),
1209 /* Call the retrieve loop. */
1211 err = ftp_loop_internal (u, f, con);
1214 logprintf (LOG_NOTQUIET, _("%s: unknown/unsupported file type.\n"),
1219 /* Set the time-stamp information to the local file. Symlinks
1220 are not to be stamped because it sets the stamp on the
1223 && !(f->type == FT_SYMLINK && !opt.retr_symlinks)
1226 && file_exists_p (u->local))
1228 touch (u->local, f->tstamp);
1230 else if (f->tstamp == -1)
1231 logprintf (LOG_NOTQUIET, _("%s: corrupt time-stamp.\n"), u->local);
1233 if (f->perms && f->type == FT_PLAINFILE && dlthis)
1234 chmod (u->local, f->perms);
1236 DEBUGP (("Unrecognized permissions for %s.\n", u->local));
1241 /* Break on fatals. */
1242 if (err == QUOTEXC || err == HOSTERR || err == FWRITEERR)
1244 con->cmd &= ~ (DO_CWD | DO_LOGIN);
1247 /* We do not want to call ftp_retrieve_dirs here */
1248 if (opt.recursive &&
1249 !(opt.reclevel != INFINITE_RECURSION && depth >= opt.reclevel))
1250 err = ftp_retrieve_dirs (u, orig, con);
1251 else if (opt.recursive)
1252 DEBUGP ((_("Will not retrieve dirs since depth is %d (max %d).\n"),
1253 depth, opt.reclevel));
1258 /* Retrieve the directories given in a file list. This function works
1259 by simply going through the linked list and calling
1260 ftp_retrieve_glob on each directory entry. The function knows
1261 about excluded directories. */
1263 ftp_retrieve_dirs (struct urlinfo *u, struct fileinfo *f, ccon *con)
1266 char *current_container = NULL;
1267 int current_length = 0;
1269 for (; f; f = f->next)
1273 if (opt.quota && opt.downloaded > opt.quota)
1275 if (f->type != FT_DIRECTORY)
1278 len = 1 + strlen (u->dir) + 1 + strlen (f->name) + 1;
1279 /* Allocate u->dir off stack, but reallocate only if a larger
1280 string is needed. */
1281 if (len > current_length)
1282 current_container = (char *)alloca (len);
1283 u->dir = current_container;
1284 /* When retrieving recursively, all directories must be
1285 absolute. This restriction will (hopefully!) be lifted in
1287 sprintf (u->dir, "/%s%s%s", odir + (*odir == '/'),
1288 (!*odir || (*odir == '/' && !* (odir + 1))) ? "" : "/", f->name);
1289 if (!accdir (u->dir, ALLABS))
1291 logprintf (LOG_VERBOSE, _("\
1292 Not descending to `%s' as it is excluded/not-included.\n"), u->dir);
1296 con->st &= ~DONE_CWD;
1297 ftp_retrieve_glob (u, con, GETALL);
1298 /* Set the time-stamp? */
1301 if (opt.quota && opt.downloaded > opt.quota)
1308 /* A near-top-level function to retrieve the files in a directory.
1309 The function calls ftp_get_listing, to get a linked list of files.
1310 Then it weeds out the file names that do not match the pattern.
1311 ftp_retrieve_list is called with this updated list as an argument.
1313 If the argument ACTION is GETONE, just download the file (but first
1314 get the listing, so that the time-stamp is heeded); if it's GLOBALL,
1315 use globbing; if it's GETALL, download the whole directory. */
1317 ftp_retrieve_glob (struct urlinfo *u, ccon *con, int action)
1319 struct fileinfo *orig, *start;
1322 con->cmd |= LEAVE_PENDING;
1324 orig = ftp_get_listing (u, con);
1326 /* First: weed out that do not conform the global rules given in
1327 opt.accepts and opt.rejects. */
1328 if (opt.accepts || opt.rejects)
1330 struct fileinfo *f = orig;
1334 if (f->type != FT_DIRECTORY && !acceptable (f->name))
1336 logprintf (LOG_VERBOSE, _("Rejecting `%s'.\n"), f->name);
1337 f = delelement (f, &start);
1343 /* Now weed out the files that do not match our globbing pattern.
1344 If we are dealing with a globbing pattern, that is. */
1345 if (*u->file && (action == GLOBALL || action == GETONE))
1348 struct fileinfo *f = start;
1352 matchres = fnmatch (u->file, f->name, 0);
1355 logprintf (LOG_NOTQUIET, "%s: %s\n", u->local,
1359 if (matchres == FNM_NOMATCH)
1360 f = delelement (f, &start); /* delete the element from the list */
1362 f = f->next; /* leave the element in the list */
1366 freefileinfo (start);
1367 return RETRBADPATTERN;
1373 /* Just get everything. */
1374 ftp_retrieve_list (u, start, con);
1378 if (action == GLOBALL)
1381 /* #### This message SUCKS. We should see what was the
1382 reason that nothing was retrieved. */
1383 logprintf (LOG_VERBOSE, _("No matches on pattern `%s'.\n"), u->file);
1385 else /* GETONE or GETALL */
1387 /* Let's try retrieving it anyway. */
1388 con->st |= ON_YOUR_OWN;
1389 res = ftp_loop_internal (u, NULL, con);
1393 freefileinfo (start);
1394 if (opt.quota && opt.downloaded > opt.quota)
1397 /* #### Should we return `res' here? */
1401 /* The wrapper that calls an appropriate routine according to contents
1402 of URL. Inherently, its capabilities are limited on what can be
1403 encoded into a URL. */
1405 ftp_loop (struct urlinfo *u, int *dt)
1407 ccon con; /* FTP connection */
1412 rbuf_uninitialize (&con.rbuf);
1413 con.st = ON_YOUR_OWN;
1414 res = RETROK; /* in case it's not used */
1416 /* If the file name is empty, the user probably wants a directory
1417 index. We'll provide one, properly HTML-ized. Unless
1418 opt.htmlify is 0, of course. :-) */
1419 if (!*u->file && !opt.recursive)
1421 struct fileinfo *f = ftp_get_listing (u, &con);
1427 char *filename = (opt.output_document
1428 ? xstrdup (opt.output_document)
1429 : (u->local ? xstrdup (u->local)
1430 : url_filename (u)));
1431 res = ftp_index (filename, u, f);
1432 if (res == FTPOK && opt.verbose)
1434 if (!opt.output_document)
1438 if (stat (filename, &st) == 0)
1442 logprintf (LOG_NOTQUIET,
1443 _("Wrote HTML-ized index to `%s' [%ld].\n"),
1447 logprintf (LOG_NOTQUIET,
1448 _("Wrote HTML-ized index to `%s'.\n"),
1458 int wild = has_wildcards_p (u->file);
1459 if ((opt.ftp_glob && wild) || opt.recursive || opt.timestamping)
1461 /* ftp_retrieve_glob is a catch-all function that gets called
1462 if we need globbing, time-stamping or recursion. Its
1463 third argument is just what we really need. */
1464 ftp_retrieve_glob (u, &con,
1465 (opt.ftp_glob && wild) ? GLOBALL : GETONE);
1468 res = ftp_loop_internal (u, NULL, &con);
1474 /* If a connection was left, quench it. */
1475 if (rbuf_initialized_p (&con.rbuf))
1476 CLOSE (RBUF_FD (&con.rbuf));
1480 /* Delete an element from the fileinfo linked list. Returns the
1481 address of the next element, or NULL if the list is exhausted. It
1482 can modify the start of the list. */
1483 static struct fileinfo *
1484 delelement (struct fileinfo *f, struct fileinfo **start)
1486 struct fileinfo *prev = f->prev;
1487 struct fileinfo *next = f->next;
1490 FREE_MAYBE (f->linkto);
1502 /* Free the fileinfo linked list of files. */
1504 freefileinfo (struct fileinfo *f)
1508 struct fileinfo *next = f->next;