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))
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);
692 logprintf (LOG_VERBOSE, _("Length: %s"), legible (*len));
694 logprintf (LOG_VERBOSE, _(" [%s to go]"), legible (*len - restval));
695 logputs (LOG_VERBOSE, "\n");
697 else if (expected_bytes)
699 logprintf (LOG_VERBOSE, _("Length: %s"), legible (expected_bytes));
701 logprintf (LOG_VERBOSE, _(" [%s to go]"),
702 legible (expected_bytes - restval));
703 logputs (LOG_VERBOSE, _(" (unauthoritative)\n"));
706 /* Get the contents of the document. */
707 res = get_contents (dtsock, fp, len, restval, expected_bytes, &con->rbuf);
708 con->dltime = elapsed_time ();
709 tms = time_str (NULL);
710 tmrate = rate (*len - restval, con->dltime);
711 /* Close data connection socket. */
713 /* Close the local file. */
715 /* Close or flush the file. We have to be careful to check for
716 error here. Checking the result of fwrite() is not enough --
717 errors could go unnoticed! */
719 if (!opt.dfp || con->cmd & DO_LIST)
720 flush_res = fclose (fp);
722 flush_res = fflush (fp);
723 if (flush_res == EOF)
726 /* If get_contents couldn't write to fp, bail out. */
729 logprintf (LOG_NOTQUIET, _("%s: %s, closing control connection.\n"),
730 u->local, strerror (errno));
732 rbuf_uninitialize (&con->rbuf);
737 logprintf (LOG_NOTQUIET, _("%s (%s) - Data connection: %s; "),
738 tms, tmrate, strerror (errno));
739 if (opt.server_response)
740 logputs (LOG_ALWAYS, "\n");
743 /* Get the server to tell us if everything is retrieved. */
744 err = ftp_response (&con->rbuf, &respline);
745 /* ...and empty the buffer. */
746 rbuf_discard (&con->rbuf);
750 /* The control connection is decidedly closed. Print the time
751 only if it hasn't already been printed. */
753 logprintf (LOG_NOTQUIET, "%s (%s) - ", tms, tmrate);
754 logputs (LOG_NOTQUIET, _("Control connection closed.\n"));
755 /* If there is an error on the control connection, close it, but
756 return FTPRETRINT, since there is a possibility that the
757 whole file was retrieved nevertheless (but that is for
758 ftp_loop_internal to decide). */
760 rbuf_uninitialize (&con->rbuf);
763 /* If retrieval failed for any reason, return FTPRETRINT, but do not
764 close socket, since the control connection is still alive. If
765 there is something wrong with the control connection, it will
766 become apparent later. */
767 if (*respline != '2')
771 logprintf (LOG_NOTQUIET, "%s (%s) - ", tms, tmrate);
772 logputs (LOG_NOTQUIET, _("Data transfer aborted.\n"));
779 /* What now? The data connection was erroneous, whereas the
780 response says everything is OK. We shall play it safe. */
784 if (!(cmd & LEAVE_PENDING))
786 /* I should probably send 'QUIT' and check for a reply, but this
787 is faster. #### Is it OK, though? */
789 rbuf_uninitialize (&con->rbuf);
791 /* If it was a listing, and opt.server_response is true,
793 if (opt.server_response && (con->cmd & DO_LIST))
795 mkalldirs (u->local);
796 fp = fopen (u->local, "r");
798 logprintf (LOG_ALWAYS, "%s: %s\n", u->local, strerror (errno));
802 /* The lines are being read with read_whole_line because of
803 no-buffering on opt.lfile. */
804 while ((line = read_whole_line (fp)))
806 logprintf (LOG_ALWAYS, "%s\n", line);
811 } /* con->cmd & DO_LIST && server_response */
816 /* A one-file FTP loop. This is the part where FTP retrieval is
817 retried, and retried, and retried, and...
819 This loop either gets commands from con, or (if ON_YOUR_OWN is
820 set), makes them up to retrieve the file given by the URL. */
822 ftp_loop_internal (struct urlinfo *u, struct fileinfo *f, ccon *con)
824 static int first_retrieval = 1;
828 char *tms, *tmrate, *locf;
833 u->local = url_filename (u);
835 if (opt.noclobber && file_exists_p (u->local))
837 logprintf (LOG_VERBOSE,
838 _("File `%s' already there, not retrieving.\n"), u->local);
839 /* If the file is there, we suppose it's retrieved OK. */
843 /* Remove it if it's a link. */
844 remove_link (u->local);
845 if (!opt.output_document)
848 locf = opt.output_document;
852 if (con->st & ON_YOUR_OWN)
853 con->st = ON_YOUR_OWN;
855 orig_lp = con->cmd & LEAVE_PENDING ? 1 : 0;
860 /* Increment the pass counter. */
862 /* Wait before the retrieval (unless this is the very first
864 Check if we are retrying or not, wait accordingly - HEH */
865 if (!first_retrieval && (opt.wait || (count && opt.waitretry)))
869 if (count<opt.waitretry)
872 sleep(opt.waitretry);
879 if (con->st & ON_YOUR_OWN)
882 con->cmd |= (DO_RETR | LEAVE_PENDING);
883 if (rbuf_initialized_p (&con->rbuf))
884 con->cmd &= ~ (DO_LOGIN | DO_CWD);
886 con->cmd |= (DO_LOGIN | DO_CWD);
888 else /* not on your own */
890 if (rbuf_initialized_p (&con->rbuf))
891 con->cmd &= ~DO_LOGIN;
893 con->cmd |= DO_LOGIN;
894 if (con->st & DONE_CWD)
899 /* Assume no restarting. */
901 if ((count > 1 || opt.always_rest)
902 && !(con->cmd & DO_LIST)
903 && file_exists_p (u->local))
904 if (stat (u->local, &st) == 0)
905 restval = st.st_size;
906 /* Get the current time string. */
907 tms = time_str (NULL);
908 /* Print fetch message, if opt.verbose. */
911 char *hurl = str_url (u->proxy ? u->proxy : u, 1);
915 sprintf (tmp, _("(try:%2d)"), count);
916 logprintf (LOG_VERBOSE, "--%s-- %s\n %s => `%s'\n",
917 tms, hurl, tmp, locf);
919 ws_changetitle (hurl, 1);
923 /* Send getftp the proper length, if fileinfo was provided. */
928 err = getftp (u, &len, restval, con);
930 tms = time_str (NULL);
931 tmrate = rate (len - restval, con->dltime);
933 if (!rbuf_initialized_p (&con->rbuf))
934 con->st &= ~DONE_CWD;
940 case HOSTERR: case CONREFUSED: case FWRITEERR: case FOPENERR:
941 case FTPNSFOD: case FTPLOGINC: case FTPNOPASV:
942 /* Fatal errors, give up. */
945 case CONSOCKERR: case CONERROR: case FTPSRVERR: case FTPRERR:
946 case WRITEFAILED: case FTPUNKNOWNTYPE: case CONPORTERR:
947 case BINDERR: case LISTENERR: case ACCEPTERR:
948 case FTPPORTERR: case FTPLOGREFUSED: case FTPINVPASV:
949 printwhat (count, opt.ntry);
950 /* non-fatal errors */
954 /* If the control connection was closed, the retrieval
955 will be considered OK if f->size == len. */
956 if (!f || len != f->size)
958 printwhat (count, opt.ntry);
970 /* If we get out of the switch above without continue'ing, we've
971 successfully downloaded a file. Remember this fact. */
972 downloaded_file(ADD_FILE, locf);
974 if (con->st & ON_YOUR_OWN)
976 CLOSE (RBUF_FD (&con->rbuf));
977 rbuf_uninitialize (&con->rbuf);
979 logprintf (LOG_VERBOSE, _("%s (%s) - `%s' saved [%ld]\n\n"),
980 tms, tmrate, locf, len);
981 logprintf (LOG_NONVERBOSE, "%s URL: %s [%ld] -> \"%s\" [%d]\n",
982 tms, u->url, len, locf, count);
983 /* Do not count listings among the downloaded stuff, since they
984 will get deleted anyway. */
985 if (!(con->cmd & DO_LIST))
988 opt.downloaded += len;
990 /* Restore the original leave-pendingness. */
992 con->cmd |= LEAVE_PENDING;
994 con->cmd &= ~LEAVE_PENDING;
996 } while (!opt.ntry || (count < opt.ntry));
998 if (rbuf_initialized_p (&con->rbuf) && (con->st & ON_YOUR_OWN))
1000 CLOSE (RBUF_FD (&con->rbuf));
1001 rbuf_uninitialize (&con->rbuf);
1006 /* Return the directory listing in a reusable format. The directory
1007 is specifed in u->dir. */
1008 static struct fileinfo *
1009 ftp_get_listing (struct urlinfo *u, ccon *con)
1013 char *olocal = u->local;
1014 char *list_filename, *ofile;
1016 con->st &= ~ON_YOUR_OWN;
1017 con->cmd |= (DO_LIST | LEAVE_PENDING);
1018 con->cmd &= ~DO_RETR;
1019 /* Get the listing filename. */
1021 u->file = LIST_FILENAME;
1022 list_filename = url_filename (u);
1024 u->local = list_filename;
1025 DEBUGP ((_("Using `%s' as listing tmp file.\n"), list_filename));
1026 err = ftp_loop_internal (u, NULL, con);
1029 f = ftp_parse_ls (list_filename);
1032 if (opt.remove_listing)
1034 if (unlink (list_filename))
1035 logprintf (LOG_NOTQUIET, "unlink: %s\n", strerror (errno));
1037 logprintf (LOG_VERBOSE, _("Removed `%s'.\n"), list_filename);
1039 free (list_filename);
1040 con->cmd &= ~DO_LIST;
1044 static uerr_t ftp_retrieve_dirs PARAMS ((struct urlinfo *, struct fileinfo *,
1046 static uerr_t ftp_retrieve_glob PARAMS ((struct urlinfo *, ccon *, int));
1047 static struct fileinfo *delelement PARAMS ((struct fileinfo *,
1048 struct fileinfo **));
1049 static void freefileinfo PARAMS ((struct fileinfo *f));
1051 /* Retrieve a list of files given in struct fileinfo linked list. If
1052 a file is a symbolic link, do not retrieve it, but rather try to
1053 set up a similar link on the local disk, if the symlinks are
1056 If opt.recursive is set, after all files have been retrieved,
1057 ftp_retrieve_dirs will be called to retrieve the directories. */
1059 ftp_retrieve_list (struct urlinfo *u, struct fileinfo *f, ccon *con)
1061 static int depth = 0;
1063 char *olocal, *ofile;
1064 struct fileinfo *orig;
1069 /* Increase the depth. */
1071 if (opt.reclevel != INFINITE_RECURSION && depth > opt.reclevel)
1073 DEBUGP ((_("Recursion depth %d exceeded max. depth %d.\n"),
1074 depth, opt.reclevel));
1082 con->st &= ~ON_YOUR_OWN;
1083 if (!(con->st & DONE_CWD))
1086 con->cmd &= ~DO_CWD;
1087 con->cmd |= (DO_RETR | LEAVE_PENDING);
1089 if (!rbuf_initialized_p (&con->rbuf))
1090 con->cmd |= DO_LOGIN;
1092 con->cmd &= ~DO_LOGIN;
1094 err = RETROK; /* in case it's not used */
1098 if (opt.quota && opt.downloaded > opt.quota)
1106 u->local = url_filename (u);
1110 if (opt.timestamping && f->type == FT_PLAINFILE)
1113 /* If conversion of HTML files retrieved via FTP is ever implemented,
1114 we'll need to stat() <file>.orig here when -K has been specified.
1115 I'm not implementing it now since files on an FTP server are much
1116 more likely than files on an HTTP server to legitimately have a
1118 if (!stat (u->local, &st))
1120 /* Else, get it from the file. */
1121 local_size = st.st_size;
1123 if (local_size == f->size && tml >= f->tstamp)
1125 logprintf (LOG_VERBOSE, _("\
1126 Server file no newer than local file `%s' -- not retrieving.\n\n"), u->local);
1129 else if (local_size != f->size)
1131 logprintf (LOG_VERBOSE, _("\
1132 The sizes do not match (local %ld) -- retrieving.\n"), local_size);
1135 } /* opt.timestamping && f->type == FT_PLAINFILE */
1139 /* If opt.retr_symlinks is defined, we treat symlinks as
1140 if they were normal files. There is currently no way
1141 to distinguish whether they might be directories, and
1143 if (!opt.retr_symlinks)
1147 logputs (LOG_NOTQUIET,
1148 _("Invalid name of the symlink, skipping.\n"));
1152 /* Check whether we already have the correct
1154 int rc = lstat (u->local, &st);
1157 size_t len = strlen (f->linkto) + 1;
1158 if (S_ISLNK (st.st_mode))
1160 char *link_target = (char *)alloca (len);
1161 size_t n = readlink (u->local, link_target, len);
1163 && (memcmp (link_target, f->linkto, n) == 0))
1165 logprintf (LOG_VERBOSE, _("\
1166 Already have correct symlink %s -> %s\n\n"),
1167 u->local, f->linkto);
1173 logprintf (LOG_VERBOSE, _("Creating symlink %s -> %s\n"),
1174 u->local, f->linkto);
1175 /* Unlink before creating symlink! */
1177 if (symlink (f->linkto, u->local) == -1)
1178 logprintf (LOG_NOTQUIET, "symlink: %s\n",
1180 logputs (LOG_VERBOSE, "\n");
1181 } /* have f->linkto */
1182 #else /* not HAVE_SYMLINK */
1183 logprintf (LOG_NOTQUIET,
1184 _("Symlinks not supported, skipping symlink `%s'.\n"),
1186 #endif /* not HAVE_SYMLINK */
1188 else /* opt.retr_symlinks */
1191 err = ftp_loop_internal (u, f, con);
1192 } /* opt.retr_symlinks */
1196 logprintf (LOG_NOTQUIET, _("Skipping directory `%s'.\n"),
1200 /* Call the retrieve loop. */
1202 err = ftp_loop_internal (u, f, con);
1205 logprintf (LOG_NOTQUIET, _("%s: unknown/unsupported file type.\n"),
1210 /* Set the time-stamp information to the local file. Symlinks
1211 are not to be stamped because it sets the stamp on the
1214 && !(f->type == FT_SYMLINK && !opt.retr_symlinks)
1217 && file_exists_p (u->local))
1219 touch (u->local, f->tstamp);
1221 else if (f->tstamp == -1)
1222 logprintf (LOG_NOTQUIET, _("%s: corrupt time-stamp.\n"), u->local);
1224 if (f->perms && f->type == FT_PLAINFILE && dlthis)
1225 chmod (u->local, f->perms);
1227 DEBUGP (("Unrecognized permissions for %s.\n", u->local));
1232 /* Break on fatals. */
1233 if (err == QUOTEXC || err == HOSTERR || err == FWRITEERR)
1235 con->cmd &= ~ (DO_CWD | DO_LOGIN);
1238 /* We do not want to call ftp_retrieve_dirs here */
1239 if (opt.recursive &&
1240 !(opt.reclevel != INFINITE_RECURSION && depth >= opt.reclevel))
1241 err = ftp_retrieve_dirs (u, orig, con);
1242 else if (opt.recursive)
1243 DEBUGP ((_("Will not retrieve dirs since depth is %d (max %d).\n"),
1244 depth, opt.reclevel));
1249 /* Retrieve the directories given in a file list. This function works
1250 by simply going through the linked list and calling
1251 ftp_retrieve_glob on each directory entry. The function knows
1252 about excluded directories. */
1254 ftp_retrieve_dirs (struct urlinfo *u, struct fileinfo *f, ccon *con)
1257 char *current_container = NULL;
1258 int current_length = 0;
1260 for (; f; f = f->next)
1264 if (opt.quota && opt.downloaded > opt.quota)
1266 if (f->type != FT_DIRECTORY)
1269 len = 1 + strlen (u->dir) + 1 + strlen (f->name) + 1;
1270 /* Allocate u->dir off stack, but reallocate only if a larger
1271 string is needed. */
1272 if (len > current_length)
1273 current_container = (char *)alloca (len);
1274 u->dir = current_container;
1275 /* When retrieving recursively, all directories must be
1276 absolute. This restriction will (hopefully!) be lifted in
1278 sprintf (u->dir, "/%s%s%s", odir + (*odir == '/'),
1279 (!*odir || (*odir == '/' && !* (odir + 1))) ? "" : "/", f->name);
1280 if (!accdir (u->dir, ALLABS))
1282 logprintf (LOG_VERBOSE, _("\
1283 Not descending to `%s' as it is excluded/not-included.\n"), u->dir);
1287 con->st &= ~DONE_CWD;
1288 ftp_retrieve_glob (u, con, GETALL);
1289 /* Set the time-stamp? */
1292 if (opt.quota && opt.downloaded > opt.quota)
1299 /* A near-top-level function to retrieve the files in a directory.
1300 The function calls ftp_get_listing, to get a linked list of files.
1301 Then it weeds out the file names that do not match the pattern.
1302 ftp_retrieve_list is called with this updated list as an argument.
1304 If the argument ACTION is GETONE, just download the file (but first
1305 get the listing, so that the time-stamp is heeded); if it's GLOBALL,
1306 use globbing; if it's GETALL, download the whole directory. */
1308 ftp_retrieve_glob (struct urlinfo *u, ccon *con, int action)
1310 struct fileinfo *orig, *start;
1313 con->cmd |= LEAVE_PENDING;
1315 orig = ftp_get_listing (u, con);
1317 /* First: weed out that do not conform the global rules given in
1318 opt.accepts and opt.rejects. */
1319 if (opt.accepts || opt.rejects)
1321 struct fileinfo *f = orig;
1325 if (f->type != FT_DIRECTORY && !acceptable (f->name))
1327 logprintf (LOG_VERBOSE, _("Rejecting `%s'.\n"), f->name);
1328 f = delelement (f, &start);
1334 /* Now weed out the files that do not match our globbing pattern.
1335 If we are dealing with a globbing pattern, that is. */
1336 if (*u->file && (action == GLOBALL || action == GETONE))
1339 struct fileinfo *f = start;
1343 matchres = fnmatch (u->file, f->name, 0);
1346 logprintf (LOG_NOTQUIET, "%s: %s\n", u->local,
1350 if (matchres == FNM_NOMATCH)
1351 f = delelement (f, &start); /* delete the element from the list */
1353 f = f->next; /* leave the element in the list */
1357 freefileinfo (start);
1358 return RETRBADPATTERN;
1364 /* Just get everything. */
1365 ftp_retrieve_list (u, start, con);
1369 if (action == GLOBALL)
1372 /* #### This message SUCKS. We should see what was the
1373 reason that nothing was retrieved. */
1374 logprintf (LOG_VERBOSE, _("No matches on pattern `%s'.\n"), u->file);
1376 else /* GETONE or GETALL */
1378 /* Let's try retrieving it anyway. */
1379 con->st |= ON_YOUR_OWN;
1380 res = ftp_loop_internal (u, NULL, con);
1384 freefileinfo (start);
1385 if (opt.quota && opt.downloaded > opt.quota)
1388 /* #### Should we return `res' here? */
1392 /* The wrapper that calls an appropriate routine according to contents
1393 of URL. Inherently, its capabilities are limited on what can be
1394 encoded into a URL. */
1396 ftp_loop (struct urlinfo *u, int *dt)
1398 ccon con; /* FTP connection */
1403 rbuf_uninitialize (&con.rbuf);
1404 con.st = ON_YOUR_OWN;
1405 res = RETROK; /* in case it's not used */
1407 /* If the file name is empty, the user probably wants a directory
1408 index. We'll provide one, properly HTML-ized. Unless
1409 opt.htmlify is 0, of course. :-) */
1410 if (!*u->file && !opt.recursive)
1412 struct fileinfo *f = ftp_get_listing (u, &con);
1418 char *filename = (opt.output_document
1419 ? xstrdup (opt.output_document)
1420 : (u->local ? xstrdup (u->local)
1421 : url_filename (u)));
1422 res = ftp_index (filename, u, f);
1423 if (res == FTPOK && opt.verbose)
1425 if (!opt.output_document)
1429 if (stat (filename, &st) == 0)
1433 logprintf (LOG_NOTQUIET,
1434 _("Wrote HTML-ized index to `%s' [%ld].\n"),
1438 logprintf (LOG_NOTQUIET,
1439 _("Wrote HTML-ized index to `%s'.\n"),
1449 int wild = has_wildcards_p (u->file);
1450 if ((opt.ftp_glob && wild) || opt.recursive || opt.timestamping)
1452 /* ftp_retrieve_glob is a catch-all function that gets called
1453 if we need globbing, time-stamping or recursion. Its
1454 third argument is just what we really need. */
1455 ftp_retrieve_glob (u, &con,
1456 (opt.ftp_glob && wild) ? GLOBALL : GETONE);
1459 res = ftp_loop_internal (u, NULL, &con);
1465 /* If a connection was left, quench it. */
1466 if (rbuf_initialized_p (&con.rbuf))
1467 CLOSE (RBUF_FD (&con.rbuf));
1471 /* Delete an element from the fileinfo linked list. Returns the
1472 address of the next element, or NULL if the list is exhausted. It
1473 can modify the start of the list. */
1474 static struct fileinfo *
1475 delelement (struct fileinfo *f, struct fileinfo **start)
1477 struct fileinfo *prev = f->prev;
1478 struct fileinfo *next = f->next;
1481 FREE_MAYBE (f->linkto);
1493 /* Free the fileinfo linked list of files. */
1495 freefileinfo (struct fileinfo *f)
1499 struct fileinfo *next = f->next;