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406c51ee |
1 | # Net::FTP.pm |
2 | # |
3 | # Copyright (c) 1995-8 Graham Barr <gbarr@pobox.com>. All rights reserved. |
4 | # This program is free software; you can redistribute it and/or |
5 | # modify it under the same terms as Perl itself. |
6 | # |
7 | # Documentation (at end) improved 1996 by Nathan Torkington <gnat@frii.com>. |
8 | |
9 | package Net::FTP; |
10 | |
11 | require 5.001; |
12 | |
13 | use strict; |
14 | use vars qw(@ISA $VERSION); |
15 | use Carp; |
16 | |
17 | use Socket 1.3; |
18 | use IO::Socket; |
19 | use Time::Local; |
20 | use Net::Cmd; |
21 | use Net::Config; |
302c2e6b |
22 | use Fcntl qw(O_WRONLY O_RDONLY O_APPEND O_CREAT O_TRUNC); |
406c51ee |
23 | # use AutoLoader qw(AUTOLOAD); |
24 | |
c8570720 |
25 | $VERSION = "2.62"; # $Id: //depot/libnet/Net/FTP.pm#64 $ |
406c51ee |
26 | @ISA = qw(Exporter Net::Cmd IO::Socket::INET); |
27 | |
28 | # Someday I will "use constant", when I am not bothered to much about |
29 | # compatability with older releases of perl |
30 | |
31 | use vars qw($TELNET_IAC $TELNET_IP $TELNET_DM); |
32 | ($TELNET_IAC,$TELNET_IP,$TELNET_DM) = (255,244,242); |
33 | |
34 | # Name is too long for AutoLoad, it clashes with pasv_xfer |
35 | sub pasv_xfer_unique { |
36 | my($sftp,$sfile,$dftp,$dfile) = @_; |
37 | $sftp->pasv_xfer($sfile,$dftp,$dfile,1); |
38 | } |
39 | |
686337f3 |
40 | BEGIN { |
41 | # make a constant so code is fast'ish |
42 | my $is_os390 = $^O eq 'os390'; |
43 | *trEBCDIC = sub () { $is_os390 } |
44 | } |
45 | |
406c51ee |
46 | 1; |
47 | # Having problems with AutoLoader |
48 | #__END__ |
49 | |
50 | sub new |
51 | { |
52 | my $pkg = shift; |
53 | my $peer = shift; |
54 | my %arg = @_; |
55 | |
56 | my $host = $peer; |
57 | my $fire = undef; |
302c2e6b |
58 | my $fire_type = undef; |
406c51ee |
59 | |
60 | if(exists($arg{Firewall}) || Net::Config->requires_firewall($peer)) |
61 | { |
62 | $fire = $arg{Firewall} |
63 | || $ENV{FTP_FIREWALL} |
64 | || $NetConfig{ftp_firewall} |
65 | || undef; |
66 | |
67 | if(defined $fire) |
68 | { |
69 | $peer = $fire; |
70 | delete $arg{Port}; |
302c2e6b |
71 | $fire_type = $arg{FirewallType} |
72 | || $ENV{FTP_FIREWALL_TYPE} |
73 | || undef; |
406c51ee |
74 | } |
75 | } |
76 | |
77 | my $ftp = $pkg->SUPER::new(PeerAddr => $peer, |
78 | PeerPort => $arg{Port} || 'ftp(21)', |
79 | Proto => 'tcp', |
80 | Timeout => defined $arg{Timeout} |
81 | ? $arg{Timeout} |
82 | : 120 |
83 | ) or return undef; |
84 | |
85 | ${*$ftp}{'net_ftp_host'} = $host; # Remote hostname |
86 | ${*$ftp}{'net_ftp_type'} = 'A'; # ASCII/binary/etc mode |
87 | ${*$ftp}{'net_ftp_blksize'} = abs($arg{'BlockSize'} || 10240); |
88 | |
89 | ${*$ftp}{'net_ftp_firewall'} = $fire |
90 | if(defined $fire); |
302c2e6b |
91 | ${*$ftp}{'net_ftp_firewall_type'} = $fire_type |
92 | if(defined $fire_type); |
406c51ee |
93 | |
94 | ${*$ftp}{'net_ftp_passive'} = int |
95 | exists $arg{Passive} |
96 | ? $arg{Passive} |
97 | : exists $ENV{FTP_PASSIVE} |
98 | ? $ENV{FTP_PASSIVE} |
99 | : defined $fire |
100 | ? $NetConfig{ftp_ext_passive} |
101 | : $NetConfig{ftp_int_passive}; # Whew! :-) |
102 | |
103 | $ftp->hash(exists $arg{Hash} ? $arg{Hash} : 0, 1024); |
104 | |
105 | $ftp->autoflush(1); |
106 | |
107 | $ftp->debug(exists $arg{Debug} ? $arg{Debug} : undef); |
108 | |
109 | unless ($ftp->response() == CMD_OK) |
110 | { |
111 | $ftp->close(); |
112 | $@ = $ftp->message; |
113 | undef $ftp; |
114 | } |
115 | |
116 | $ftp; |
117 | } |
118 | |
119 | ## |
120 | ## User interface methods |
121 | ## |
122 | |
123 | sub hash { |
124 | my $ftp = shift; # self |
406c51ee |
125 | |
406c51ee |
126 | my($h,$b) = @_; |
302c2e6b |
127 | unless($h) { |
128 | delete ${*$ftp}{'net_ftp_hash'}; |
129 | return [\*STDERR,0]; |
406c51ee |
130 | } |
302c2e6b |
131 | ($h,$b) = (ref($h)? $h : \*STDERR, $b || 1024); |
406c51ee |
132 | select((select($h), $|=1)[0]); |
133 | $b = 512 if $b < 512; |
134 | ${*$ftp}{'net_ftp_hash'} = [$h, $b]; |
406c51ee |
135 | } |
136 | |
137 | sub quit |
138 | { |
139 | my $ftp = shift; |
140 | |
141 | $ftp->_QUIT; |
142 | $ftp->close; |
143 | } |
144 | |
c8570720 |
145 | sub DESTROY {} |
406c51ee |
146 | |
147 | sub ascii { shift->type('A',@_); } |
148 | sub binary { shift->type('I',@_); } |
149 | |
150 | sub ebcdic |
151 | { |
152 | carp "TYPE E is unsupported, shall default to I"; |
153 | shift->type('E',@_); |
154 | } |
155 | |
156 | sub byte |
157 | { |
158 | carp "TYPE L is unsupported, shall default to I"; |
159 | shift->type('L',@_); |
160 | } |
161 | |
162 | # Allow the user to send a command directly, BE CAREFUL !! |
163 | |
164 | sub quot |
165 | { |
166 | my $ftp = shift; |
167 | my $cmd = shift; |
168 | |
169 | $ftp->command( uc $cmd, @_); |
170 | $ftp->response(); |
171 | } |
172 | |
173 | sub site |
174 | { |
175 | my $ftp = shift; |
176 | |
177 | $ftp->command("SITE", @_); |
178 | $ftp->response(); |
179 | } |
180 | |
181 | sub mdtm |
182 | { |
183 | my $ftp = shift; |
184 | my $file = shift; |
185 | |
186 | # Server Y2K bug workaround |
187 | # |
188 | # sigh; some idiotic FTP servers use ("19%d",tm.tm_year) instead of |
189 | # ("%d",tm.tm_year+1900). This results in an extra digit in the |
190 | # string returned. To account for this we allow an optional extra |
191 | # digit in the year. Then if the first two digits are 19 we use the |
192 | # remainder, otherwise we subtract 1900 from the whole year. |
193 | |
194 | $ftp->_MDTM($file) && $ftp->message =~ /((\d\d)(\d\d\d?))(\d\d)(\d\d)(\d\d)(\d\d)(\d\d)/ |
195 | ? timegm($8,$7,$6,$5,$4-1,$2 eq '19' ? $3 : ($1-1900)) |
196 | : undef; |
197 | } |
198 | |
199 | sub size { |
200 | my $ftp = shift; |
201 | my $file = shift; |
202 | my $io; |
203 | if($ftp->supported("SIZE")) { |
204 | return $ftp->_SIZE($file) |
686337f3 |
205 | ? ($ftp->message =~ /(\d+)$/)[0] |
406c51ee |
206 | : undef; |
207 | } |
208 | elsif($ftp->supported("STAT")) { |
209 | my @msg; |
210 | return undef |
211 | unless $ftp->_STAT($file) && (@msg = $ftp->message) == 3; |
212 | my $line; |
213 | foreach $line (@msg) { |
214 | return (split(/\s+/,$line))[4] |
302c2e6b |
215 | if $line =~ /^[-rwx]{10}/ |
406c51ee |
216 | } |
217 | } |
218 | else { |
219 | my @files = $ftp->dir($file); |
220 | if(@files) { |
221 | return (split(/\s+/,$1))[4] |
302c2e6b |
222 | if $files[0] =~ /^([-rwx]{10}.*)$/; |
406c51ee |
223 | } |
224 | } |
225 | undef; |
226 | } |
227 | |
228 | sub login { |
229 | my($ftp,$user,$pass,$acct) = @_; |
230 | my($ok,$ruser,$fwtype); |
231 | |
232 | unless (defined $user) { |
233 | require Net::Netrc; |
234 | |
235 | my $rc = Net::Netrc->lookup(${*$ftp}{'net_ftp_host'}); |
236 | |
237 | ($user,$pass,$acct) = $rc->lpa() |
238 | if ($rc); |
239 | } |
240 | |
241 | $user ||= "anonymous"; |
242 | $ruser = $user; |
243 | |
302c2e6b |
244 | $fwtype = ${*$ftp}{'net_ftp_firewall_type'} |
245 | || $NetConfig{'ftp_firewall_type'} |
246 | || 0; |
406c51ee |
247 | |
248 | if ($fwtype && defined ${*$ftp}{'net_ftp_firewall'}) { |
249 | if ($fwtype == 1 || $fwtype == 7) { |
250 | $user .= '@' . ${*$ftp}{'net_ftp_host'}; |
251 | } |
252 | else { |
253 | require Net::Netrc; |
254 | |
255 | my $rc = Net::Netrc->lookup(${*$ftp}{'net_ftp_firewall'}); |
256 | |
257 | my($fwuser,$fwpass,$fwacct) = $rc ? $rc->lpa() : (); |
258 | |
259 | if ($fwtype == 5) { |
260 | $user = join('@',$user,$fwuser,${*$ftp}{'net_ftp_host'}); |
261 | $pass = $pass . '@' . $fwpass; |
262 | } |
263 | else { |
264 | if ($fwtype == 2) { |
265 | $user .= '@' . ${*$ftp}{'net_ftp_host'}; |
266 | } |
267 | elsif ($fwtype == 6) { |
268 | $fwuser .= '@' . ${*$ftp}{'net_ftp_host'}; |
269 | } |
270 | |
271 | $ok = $ftp->_USER($fwuser); |
272 | |
273 | return 0 unless $ok == CMD_OK || $ok == CMD_MORE; |
274 | |
275 | $ok = $ftp->_PASS($fwpass || ""); |
276 | |
277 | return 0 unless $ok == CMD_OK || $ok == CMD_MORE; |
278 | |
279 | $ok = $ftp->_ACCT($fwacct) |
280 | if defined($fwacct); |
281 | |
282 | if ($fwtype == 3) { |
283 | $ok = $ftp->command("SITE",${*$ftp}{'net_ftp_host'})->response; |
284 | } |
285 | elsif ($fwtype == 4) { |
286 | $ok = $ftp->command("OPEN",${*$ftp}{'net_ftp_host'})->response; |
287 | } |
288 | |
289 | return 0 unless $ok == CMD_OK || $ok == CMD_MORE; |
290 | } |
291 | } |
292 | } |
293 | |
294 | $ok = $ftp->_USER($user); |
295 | |
296 | # Some dumb firewalls don't prefix the connection messages |
297 | $ok = $ftp->response() |
298 | if ($ok == CMD_OK && $ftp->code == 220 && $user =~ /\@/); |
299 | |
300 | if ($ok == CMD_MORE) { |
301 | unless(defined $pass) { |
302 | require Net::Netrc; |
303 | |
304 | my $rc = Net::Netrc->lookup(${*$ftp}{'net_ftp_host'}, $ruser); |
305 | |
306 | ($ruser,$pass,$acct) = $rc->lpa() |
307 | if ($rc); |
308 | |
c8570720 |
309 | $pass = '-anonymous@' |
406c51ee |
310 | if (!defined $pass && (!defined($ruser) || $ruser =~ /^anonymous/o)); |
311 | } |
312 | |
313 | $ok = $ftp->_PASS($pass || ""); |
314 | } |
315 | |
316 | $ok = $ftp->_ACCT($acct) |
317 | if (defined($acct) && ($ok == CMD_MORE || $ok == CMD_OK)); |
318 | |
319 | if ($fwtype == 7 && $ok == CMD_OK && defined ${*$ftp}{'net_ftp_firewall'}) { |
320 | my($f,$auth,$resp) = _auth_id($ftp); |
321 | $ftp->authorize($auth,$resp) if defined($resp); |
322 | } |
323 | |
324 | $ok == CMD_OK; |
325 | } |
326 | |
327 | sub account |
328 | { |
329 | @_ == 2 or croak 'usage: $ftp->account( ACCT )'; |
330 | my $ftp = shift; |
331 | my $acct = shift; |
332 | $ftp->_ACCT($acct) == CMD_OK; |
333 | } |
334 | |
335 | sub _auth_id { |
336 | my($ftp,$auth,$resp) = @_; |
337 | |
338 | unless(defined $resp) |
339 | { |
340 | require Net::Netrc; |
341 | |
342 | $auth ||= eval { (getpwuid($>))[0] } || $ENV{NAME}; |
343 | |
344 | my $rc = Net::Netrc->lookup(${*$ftp}{'net_ftp_firewall'}, $auth) |
345 | || Net::Netrc->lookup(${*$ftp}{'net_ftp_firewall'}); |
346 | |
347 | ($auth,$resp) = $rc->lpa() |
348 | if ($rc); |
349 | } |
350 | ($ftp,$auth,$resp); |
351 | } |
352 | |
353 | sub authorize |
354 | { |
355 | @_ >= 1 || @_ <= 3 or croak 'usage: $ftp->authorize( [AUTH [, RESP]])'; |
356 | |
357 | my($ftp,$auth,$resp) = &_auth_id; |
358 | |
359 | my $ok = $ftp->_AUTH($auth || ""); |
360 | |
361 | $ok = $ftp->_RESP($resp || "") |
362 | if ($ok == CMD_MORE); |
363 | |
364 | $ok == CMD_OK; |
365 | } |
366 | |
367 | sub rename |
368 | { |
369 | @_ == 3 or croak 'usage: $ftp->rename(FROM, TO)'; |
370 | |
371 | my($ftp,$from,$to) = @_; |
372 | |
373 | $ftp->_RNFR($from) |
374 | && $ftp->_RNTO($to); |
375 | } |
376 | |
377 | sub type |
378 | { |
379 | my $ftp = shift; |
380 | my $type = shift; |
381 | my $oldval = ${*$ftp}{'net_ftp_type'}; |
382 | |
383 | return $oldval |
384 | unless (defined $type); |
385 | |
386 | return undef |
387 | unless ($ftp->_TYPE($type,@_)); |
388 | |
389 | ${*$ftp}{'net_ftp_type'} = join(" ",$type,@_); |
390 | |
391 | $oldval; |
392 | } |
393 | |
394 | sub abort |
395 | { |
396 | my $ftp = shift; |
397 | |
398 | send($ftp,pack("CCC", $TELNET_IAC, $TELNET_IP, $TELNET_IAC),MSG_OOB); |
399 | |
400 | $ftp->command(pack("C",$TELNET_DM) . "ABOR"); |
686337f3 |
401 | |
406c51ee |
402 | ${*$ftp}{'net_ftp_dataconn'}->close() |
403 | if defined ${*$ftp}{'net_ftp_dataconn'}; |
404 | |
405 | $ftp->response(); |
406 | |
407 | $ftp->status == CMD_OK; |
408 | } |
409 | |
410 | sub get |
411 | { |
412 | my($ftp,$remote,$local,$where) = @_; |
413 | |
414 | my($loc,$len,$buf,$resp,$localfd,$data); |
415 | local *FD; |
416 | |
417 | $localfd = ref($local) || ref(\$local) eq "GLOB" |
418 | ? fileno($local) |
419 | : undef; |
420 | |
421 | ($local = $remote) =~ s#^.*/## |
422 | unless(defined $local); |
423 | |
424 | croak("Bad remote filename '$remote'\n") |
425 | if $remote =~ /[\r\n]/s; |
426 | |
427 | ${*$ftp}{'net_ftp_rest'} = $where |
428 | if ($where); |
429 | |
430 | delete ${*$ftp}{'net_ftp_port'}; |
431 | delete ${*$ftp}{'net_ftp_pasv'}; |
432 | |
433 | $data = $ftp->retr($remote) or |
434 | return undef; |
435 | |
436 | if(defined $localfd) |
437 | { |
438 | $loc = $local; |
439 | } |
440 | else |
441 | { |
442 | $loc = \*FD; |
443 | |
302c2e6b |
444 | unless(sysopen($loc, $local, O_CREAT | O_WRONLY | ($where ? O_APPEND : O_TRUNC))) |
406c51ee |
445 | { |
446 | carp "Cannot open Local file $local: $!\n"; |
447 | $data->abort; |
448 | return undef; |
449 | } |
450 | } |
451 | |
452 | if($ftp->type eq 'I' && !binmode($loc)) |
453 | { |
454 | carp "Cannot binmode Local file $local: $!\n"; |
455 | $data->abort; |
456 | close($loc) unless $localfd; |
457 | return undef; |
458 | } |
459 | |
460 | $buf = ''; |
461 | my($count,$hashh,$hashb,$ref) = (0); |
462 | |
463 | ($hashh,$hashb) = @$ref |
464 | if($ref = ${*$ftp}{'net_ftp_hash'}); |
465 | |
466 | my $blksize = ${*$ftp}{'net_ftp_blksize'}; |
467 | |
468 | while(1) |
469 | { |
470 | last unless $len = $data->read($buf,$blksize); |
686337f3 |
471 | |
472 | if (trEBCDIC && $ftp->type ne 'I') |
473 | { |
474 | $buf = $ftp->toebcdic($buf); |
475 | $len = length($buf); |
476 | } |
477 | |
406c51ee |
478 | if($hashh) { |
479 | $count += $len; |
480 | print $hashh "#" x (int($count / $hashb)); |
481 | $count %= $hashb; |
482 | } |
483 | my $written = syswrite($loc,$buf,$len); |
484 | unless(defined($written) && $written == $len) |
485 | { |
486 | carp "Cannot write to Local file $local: $!\n"; |
487 | $data->abort; |
488 | close($loc) |
489 | unless defined $localfd; |
490 | return undef; |
491 | } |
492 | } |
493 | |
494 | print $hashh "\n" if $hashh; |
495 | |
686337f3 |
496 | unless (defined $localfd) |
497 | { |
498 | unless (close($loc)) |
499 | { |
500 | carp "Cannot close file $local (perhaps disk space) $!\n"; |
501 | return undef; |
502 | } |
503 | } |
504 | |
505 | unless ($data->close()) # implied $ftp->response |
506 | { |
507 | carp "Unable to close datastream"; |
508 | return undef; |
509 | } |
406c51ee |
510 | |
511 | return $local; |
512 | } |
513 | |
514 | sub cwd |
515 | { |
516 | @_ == 1 || @_ == 2 or croak 'usage: $ftp->cwd( [ DIR ] )'; |
517 | |
518 | my($ftp,$dir) = @_; |
519 | |
520 | $dir = "/" unless defined($dir) && $dir =~ /\S/; |
521 | |
522 | $dir eq ".." |
523 | ? $ftp->_CDUP() |
524 | : $ftp->_CWD($dir); |
525 | } |
526 | |
527 | sub cdup |
528 | { |
529 | @_ == 1 or croak 'usage: $ftp->cdup()'; |
530 | $_[0]->_CDUP; |
531 | } |
532 | |
533 | sub pwd |
534 | { |
535 | @_ == 1 || croak 'usage: $ftp->pwd()'; |
536 | my $ftp = shift; |
537 | |
538 | $ftp->_PWD(); |
539 | $ftp->_extract_path; |
540 | } |
541 | |
542 | # rmdir( $ftp, $dir, [ $recurse ] ) |
543 | # |
544 | # Removes $dir on remote host via FTP. |
545 | # $ftp is handle for remote host |
546 | # |
547 | # If $recurse is TRUE, the directory and deleted recursively. |
548 | # This means all of its contents and subdirectories. |
549 | # |
550 | # Initial version contributed by Dinkum Software |
551 | # |
552 | sub rmdir |
553 | { |
554 | @_ == 2 || @_ == 3 or croak('usage: $ftp->rmdir( DIR [, RECURSE ] )'); |
555 | |
556 | # Pick off the args |
557 | my ($ftp, $dir, $recurse) = @_ ; |
558 | my $ok; |
559 | |
560 | return $ok |
686337f3 |
561 | if $ok = $ftp->_RMD( $dir ) or !$recurse; |
406c51ee |
562 | |
563 | # Try to delete the contents |
564 | # Get a list of all the files in the directory |
565 | my $filelist = $ftp->ls($dir); |
566 | |
567 | return undef |
568 | unless $filelist && @$filelist; # failed, it is probably not a directory |
569 | |
570 | # Go thru and delete each file or the directory |
571 | my $file; |
572 | foreach $file (map { m,/, ? $_ : "$dir/$_" } @$filelist) |
573 | { |
574 | next # successfully deleted the file |
575 | if $ftp->delete($file); |
576 | |
577 | # Failed to delete it, assume its a directory |
578 | # Recurse and ignore errors, the final rmdir() will |
579 | # fail on any errors here |
580 | return $ok |
581 | unless $ok = $ftp->rmdir($file, 1) ; |
582 | } |
583 | |
584 | # Directory should be empty |
585 | # Try to remove the directory again |
586 | # Pass results directly to caller |
587 | # If any of the prior deletes failed, this |
588 | # rmdir() will fail because directory is not empty |
589 | return $ftp->_RMD($dir) ; |
590 | } |
591 | |
686337f3 |
592 | sub restart |
593 | { |
594 | @_ == 2 || croak 'usage: $ftp->restart( BYTE_OFFSET )'; |
595 | |
596 | my($ftp,$where) = @_; |
597 | |
598 | ${*$ftp}{'net_ftp_rest'} = $where; |
599 | |
600 | return undef; |
601 | } |
602 | |
603 | |
406c51ee |
604 | sub mkdir |
605 | { |
606 | @_ == 2 || @_ == 3 or croak 'usage: $ftp->mkdir( DIR [, RECURSE ] )'; |
607 | |
608 | my($ftp,$dir,$recurse) = @_; |
609 | |
610 | $ftp->_MKD($dir) || $recurse or |
611 | return undef; |
612 | |
613 | my $path = $dir; |
614 | |
615 | unless($ftp->ok) |
616 | { |
617 | my @path = split(m#(?=/+)#, $dir); |
618 | |
619 | $path = ""; |
620 | |
621 | while(@path) |
622 | { |
623 | $path .= shift @path; |
624 | |
625 | $ftp->_MKD($path); |
626 | |
627 | $path = $ftp->_extract_path($path); |
628 | } |
629 | |
630 | # If the creation of the last element was not sucessful, see if we |
631 | # can cd to it, if so then return path |
632 | |
633 | unless($ftp->ok) |
634 | { |
635 | my($status,$message) = ($ftp->status,$ftp->message); |
636 | my $pwd = $ftp->pwd; |
686337f3 |
637 | |
406c51ee |
638 | if($pwd && $ftp->cwd($dir)) |
639 | { |
640 | $path = $dir; |
641 | $ftp->cwd($pwd); |
642 | } |
643 | else |
644 | { |
645 | undef $path; |
646 | } |
647 | $ftp->set_status($status,$message); |
648 | } |
649 | } |
650 | |
651 | $path; |
652 | } |
653 | |
654 | sub delete |
655 | { |
656 | @_ == 2 || croak 'usage: $ftp->delete( FILENAME )'; |
657 | |
658 | $_[0]->_DELE($_[1]); |
659 | } |
660 | |
661 | sub put { shift->_store_cmd("stor",@_) } |
662 | sub put_unique { shift->_store_cmd("stou",@_) } |
663 | sub append { shift->_store_cmd("appe",@_) } |
664 | |
665 | sub nlst { shift->_data_cmd("NLST",@_) } |
666 | sub list { shift->_data_cmd("LIST",@_) } |
667 | sub retr { shift->_data_cmd("RETR",@_) } |
668 | sub stor { shift->_data_cmd("STOR",@_) } |
669 | sub stou { shift->_data_cmd("STOU",@_) } |
670 | sub appe { shift->_data_cmd("APPE",@_) } |
671 | |
672 | sub _store_cmd |
673 | { |
674 | my($ftp,$cmd,$local,$remote) = @_; |
675 | my($loc,$sock,$len,$buf,$localfd); |
676 | local *FD; |
677 | |
678 | $localfd = ref($local) || ref(\$local) eq "GLOB" |
679 | ? fileno($local) |
680 | : undef; |
681 | |
682 | unless(defined $remote) |
683 | { |
684 | croak 'Must specify remote filename with stream input' |
685 | if defined $localfd; |
686 | |
687 | require File::Basename; |
688 | $remote = File::Basename::basename($local); |
689 | } |
690 | |
691 | croak("Bad remote filename '$remote'\n") |
692 | if $remote =~ /[\r\n]/s; |
693 | |
694 | if(defined $localfd) |
695 | { |
696 | $loc = $local; |
697 | } |
698 | else |
699 | { |
700 | $loc = \*FD; |
701 | |
302c2e6b |
702 | unless(sysopen($loc, $local, O_RDONLY)) |
406c51ee |
703 | { |
704 | carp "Cannot open Local file $local: $!\n"; |
705 | return undef; |
706 | } |
707 | } |
708 | |
709 | if($ftp->type eq 'I' && !binmode($loc)) |
710 | { |
711 | carp "Cannot binmode Local file $local: $!\n"; |
712 | return undef; |
713 | } |
714 | |
715 | delete ${*$ftp}{'net_ftp_port'}; |
716 | delete ${*$ftp}{'net_ftp_pasv'}; |
717 | |
718 | $sock = $ftp->_data_cmd($cmd, $remote) or |
719 | return undef; |
720 | |
721 | my $blksize = ${*$ftp}{'net_ftp_blksize'}; |
722 | |
723 | my($count,$hashh,$hashb,$ref) = (0); |
724 | |
725 | ($hashh,$hashb) = @$ref |
726 | if($ref = ${*$ftp}{'net_ftp_hash'}); |
727 | |
728 | while(1) |
729 | { |
730 | last unless $len = sysread($loc,$buf="",$blksize); |
731 | |
686337f3 |
732 | if (trEBCDIC) |
733 | { |
734 | $buf = $ftp->toascii($buf); |
735 | $len = length($buf); |
736 | } |
737 | |
406c51ee |
738 | if($hashh) { |
739 | $count += $len; |
740 | print $hashh "#" x (int($count / $hashb)); |
741 | $count %= $hashb; |
742 | } |
743 | |
744 | my $wlen; |
745 | unless(defined($wlen = $sock->write($buf,$len)) && $wlen == $len) |
746 | { |
747 | $sock->abort; |
748 | close($loc) |
749 | unless defined $localfd; |
750 | print $hashh "\n" if $hashh; |
751 | return undef; |
752 | } |
753 | } |
754 | |
755 | print $hashh "\n" if $hashh; |
756 | |
757 | close($loc) |
758 | unless defined $localfd; |
759 | |
760 | $sock->close() or |
761 | return undef; |
762 | |
686337f3 |
763 | if ('STOU' eq uc $cmd and $ftp->message =~ m/unique\ file\ name:(.*)\)|"(.*)"/) |
764 | { |
765 | require File::Basename; |
766 | $remote = File::Basename::basename($+) |
767 | } |
406c51ee |
768 | |
769 | return $remote; |
770 | } |
771 | |
772 | sub port |
773 | { |
774 | @_ == 1 || @_ == 2 or croak 'usage: $ftp->port([PORT])'; |
775 | |
776 | my($ftp,$port) = @_; |
777 | my $ok; |
778 | |
779 | delete ${*$ftp}{'net_ftp_intern_port'}; |
780 | |
781 | unless(defined $port) |
782 | { |
783 | # create a Listen socket at same address as the command socket |
784 | |
785 | ${*$ftp}{'net_ftp_listen'} ||= IO::Socket::INET->new(Listen => 5, |
786 | Proto => 'tcp', |
686337f3 |
787 | Timeout => $ftp->timeout, |
788 | LocalAddr => $ftp->sockhost, |
406c51ee |
789 | ); |
686337f3 |
790 | |
406c51ee |
791 | my $listen = ${*$ftp}{'net_ftp_listen'}; |
792 | |
686337f3 |
793 | my($myport, @myaddr) = ($listen->sockport, split(/\./,$listen->sockhost)); |
406c51ee |
794 | |
795 | $port = join(',', @myaddr, $myport >> 8, $myport & 0xff); |
796 | |
797 | ${*$ftp}{'net_ftp_intern_port'} = 1; |
798 | } |
799 | |
800 | $ok = $ftp->_PORT($port); |
801 | |
802 | ${*$ftp}{'net_ftp_port'} = $port; |
803 | |
804 | $ok; |
805 | } |
806 | |
807 | sub ls { shift->_list_cmd("NLST",@_); } |
808 | sub dir { shift->_list_cmd("LIST",@_); } |
809 | |
810 | sub pasv |
811 | { |
812 | @_ == 1 or croak 'usage: $ftp->pasv()'; |
813 | |
814 | my $ftp = shift; |
815 | |
816 | delete ${*$ftp}{'net_ftp_intern_port'}; |
817 | |
818 | $ftp->_PASV && $ftp->message =~ /(\d+(,\d+)+)/ |
819 | ? ${*$ftp}{'net_ftp_pasv'} = $1 |
820 | : undef; |
821 | } |
822 | |
823 | sub unique_name |
824 | { |
825 | my $ftp = shift; |
826 | ${*$ftp}{'net_ftp_unique'} || undef; |
827 | } |
828 | |
829 | sub supported { |
830 | @_ == 2 or croak 'usage: $ftp->supported( CMD )'; |
831 | my $ftp = shift; |
832 | my $cmd = uc shift; |
833 | my $hash = ${*$ftp}{'net_ftp_supported'} ||= {}; |
834 | |
835 | return $hash->{$cmd} |
836 | if exists $hash->{$cmd}; |
837 | |
838 | return $hash->{$cmd} = 0 |
839 | unless $ftp->_HELP($cmd); |
840 | |
841 | my $text = $ftp->message; |
842 | if($text =~ /following\s+commands/i) { |
843 | $text =~ s/^.*\n//; |
302c2e6b |
844 | while($text =~ /(\*?)(\w+)(\*?)/sg) { |
845 | $hash->{"\U$2"} = !length("$1$3"); |
846 | } |
406c51ee |
847 | } |
848 | else { |
849 | $hash->{$cmd} = $text !~ /unimplemented/i; |
850 | } |
851 | |
852 | $hash->{$cmd} ||= 0; |
853 | } |
854 | |
855 | ## |
856 | ## Deprecated methods |
857 | ## |
858 | |
859 | sub lsl |
860 | { |
861 | carp "Use of Net::FTP::lsl deprecated, use 'dir'" |
862 | if $^W; |
863 | goto &dir; |
864 | } |
865 | |
866 | sub authorise |
867 | { |
868 | carp "Use of Net::FTP::authorise deprecated, use 'authorize'" |
869 | if $^W; |
870 | goto &authorize; |
871 | } |
872 | |
873 | |
874 | ## |
875 | ## Private methods |
876 | ## |
877 | |
878 | sub _extract_path |
879 | { |
880 | my($ftp, $path) = @_; |
881 | |
882 | # This tries to work both with and without the quote doubling |
883 | # convention (RFC 959 requires it, but the first 3 servers I checked |
884 | # didn't implement it). It will fail on a server which uses a quote in |
885 | # the message which isn't a part of or surrounding the path. |
886 | $ftp->ok && |
887 | $ftp->message =~ /(?:^|\s)\"(.*)\"(?:$|\s)/ && |
888 | ($path = $1) =~ s/\"\"/\"/g; |
889 | |
890 | $path; |
891 | } |
892 | |
893 | ## |
894 | ## Communication methods |
895 | ## |
896 | |
897 | sub _dataconn |
898 | { |
899 | my $ftp = shift; |
900 | my $data = undef; |
901 | my $pkg = "Net::FTP::" . $ftp->type; |
902 | |
903 | eval "require " . $pkg; |
904 | |
905 | $pkg =~ s/ /_/g; |
906 | |
907 | delete ${*$ftp}{'net_ftp_dataconn'}; |
908 | |
909 | if(defined ${*$ftp}{'net_ftp_pasv'}) |
910 | { |
911 | my @port = split(/,/,${*$ftp}{'net_ftp_pasv'}); |
912 | |
913 | $data = $pkg->new(PeerAddr => join(".",@port[0..3]), |
914 | PeerPort => $port[4] * 256 + $port[5], |
915 | Proto => 'tcp' |
916 | ); |
917 | } |
918 | elsif(defined ${*$ftp}{'net_ftp_listen'}) |
919 | { |
920 | $data = ${*$ftp}{'net_ftp_listen'}->accept($pkg); |
921 | close(delete ${*$ftp}{'net_ftp_listen'}); |
922 | } |
923 | |
924 | if($data) |
925 | { |
926 | ${*$data} = ""; |
927 | $data->timeout($ftp->timeout); |
928 | ${*$ftp}{'net_ftp_dataconn'} = $data; |
929 | ${*$data}{'net_ftp_cmd'} = $ftp; |
930 | ${*$data}{'net_ftp_blksize'} = ${*$ftp}{'net_ftp_blksize'}; |
931 | } |
932 | |
933 | $data; |
934 | } |
935 | |
936 | sub _list_cmd |
937 | { |
938 | my $ftp = shift; |
939 | my $cmd = uc shift; |
940 | |
941 | delete ${*$ftp}{'net_ftp_port'}; |
942 | delete ${*$ftp}{'net_ftp_pasv'}; |
943 | |
944 | my $data = $ftp->_data_cmd($cmd,@_); |
945 | |
946 | return |
947 | unless(defined $data); |
948 | |
949 | require Net::FTP::A; |
950 | bless $data, "Net::FTP::A"; # Force ASCII mode |
951 | |
952 | my $databuf = ''; |
953 | my $buf = ''; |
954 | my $blksize = ${*$ftp}{'net_ftp_blksize'}; |
955 | |
956 | while($data->read($databuf,$blksize)) { |
957 | $buf .= $databuf; |
958 | } |
959 | |
960 | my $list = [ split(/\n/,$buf) ]; |
961 | |
962 | $data->close(); |
963 | |
686337f3 |
964 | if (trEBCDIC) |
965 | { |
966 | for (@$list) { $_ = $ftp->toebcdic($_) } |
967 | } |
968 | |
406c51ee |
969 | wantarray ? @{$list} |
970 | : $list; |
971 | } |
972 | |
973 | sub _data_cmd |
974 | { |
975 | my $ftp = shift; |
976 | my $cmd = uc shift; |
977 | my $ok = 1; |
978 | my $where = delete ${*$ftp}{'net_ftp_rest'} || 0; |
979 | my $arg; |
980 | |
981 | for $arg (@_) { |
982 | croak("Bad argument '$arg'\n") |
983 | if $arg =~ /[\r\n]/s; |
984 | } |
985 | |
986 | if(${*$ftp}{'net_ftp_passive'} && |
987 | !defined ${*$ftp}{'net_ftp_pasv'} && |
988 | !defined ${*$ftp}{'net_ftp_port'}) |
989 | { |
990 | my $data = undef; |
991 | |
992 | $ok = defined $ftp->pasv; |
993 | $ok = $ftp->_REST($where) |
994 | if $ok && $where; |
995 | |
996 | if($ok) |
997 | { |
998 | $ftp->command($cmd,@_); |
999 | $data = $ftp->_dataconn(); |
1000 | $ok = CMD_INFO == $ftp->response(); |
1001 | if($ok) |
1002 | { |
1003 | $data->reading |
1004 | if $data && $cmd =~ /RETR|LIST|NLST/; |
1005 | return $data |
1006 | } |
1007 | $data->_close |
1008 | if $data; |
1009 | } |
1010 | return undef; |
1011 | } |
1012 | |
1013 | $ok = $ftp->port |
1014 | unless (defined ${*$ftp}{'net_ftp_port'} || |
1015 | defined ${*$ftp}{'net_ftp_pasv'}); |
1016 | |
1017 | $ok = $ftp->_REST($where) |
1018 | if $ok && $where; |
1019 | |
1020 | return undef |
1021 | unless $ok; |
1022 | |
1023 | $ftp->command($cmd,@_); |
1024 | |
1025 | return 1 |
1026 | if(defined ${*$ftp}{'net_ftp_pasv'}); |
1027 | |
1028 | $ok = CMD_INFO == $ftp->response(); |
1029 | |
1030 | return $ok |
1031 | unless exists ${*$ftp}{'net_ftp_intern_port'}; |
1032 | |
1033 | if($ok) { |
1034 | my $data = $ftp->_dataconn(); |
1035 | |
1036 | $data->reading |
1037 | if $data && $cmd =~ /RETR|LIST|NLST/; |
1038 | |
1039 | return $data; |
1040 | } |
1041 | |
686337f3 |
1042 | |
406c51ee |
1043 | close(delete ${*$ftp}{'net_ftp_listen'}); |
686337f3 |
1044 | |
406c51ee |
1045 | return undef; |
1046 | } |
1047 | |
1048 | ## |
1049 | ## Over-ride methods (Net::Cmd) |
1050 | ## |
1051 | |
1052 | sub debug_text { $_[2] =~ /^(pass|resp|acct)/i ? "$1 ....\n" : $_[2]; } |
1053 | |
1054 | sub command |
1055 | { |
1056 | my $ftp = shift; |
1057 | |
1058 | delete ${*$ftp}{'net_ftp_port'}; |
1059 | $ftp->SUPER::command(@_); |
1060 | } |
1061 | |
1062 | sub response |
1063 | { |
1064 | my $ftp = shift; |
1065 | my $code = $ftp->SUPER::response(); |
1066 | |
1067 | delete ${*$ftp}{'net_ftp_pasv'} |
1068 | if ($code != CMD_MORE && $code != CMD_INFO); |
1069 | |
1070 | $code; |
1071 | } |
1072 | |
1073 | sub parse_response |
1074 | { |
1075 | return ($1, $2 eq "-") |
1076 | if $_[1] =~ s/^(\d\d\d)(.?)//o; |
1077 | |
1078 | my $ftp = shift; |
1079 | |
1080 | # Darn MS FTP server is a load of CRAP !!!! |
1081 | return () |
1082 | unless ${*$ftp}{'net_cmd_code'} + 0; |
1083 | |
1084 | (${*$ftp}{'net_cmd_code'},1); |
1085 | } |
1086 | |
1087 | ## |
1088 | ## Allow 2 servers to talk directly |
1089 | ## |
1090 | |
1091 | sub pasv_xfer { |
1092 | my($sftp,$sfile,$dftp,$dfile,$unique) = @_; |
1093 | |
1094 | ($dfile = $sfile) =~ s#.*/## |
1095 | unless(defined $dfile); |
1096 | |
1097 | my $port = $sftp->pasv or |
1098 | return undef; |
1099 | |
1100 | $dftp->port($port) or |
1101 | return undef; |
1102 | |
1103 | return undef |
1104 | unless($unique ? $dftp->stou($dfile) : $dftp->stor($dfile)); |
1105 | |
1106 | unless($sftp->retr($sfile) && $sftp->response == CMD_INFO) { |
1107 | $sftp->retr($sfile); |
1108 | $dftp->abort; |
1109 | $dftp->response(); |
1110 | return undef; |
1111 | } |
1112 | |
1113 | $dftp->pasv_wait($sftp); |
1114 | } |
1115 | |
1116 | sub pasv_wait |
1117 | { |
1118 | @_ == 2 or croak 'usage: $ftp->pasv_wait(NON_PASV_FTP)'; |
1119 | |
1120 | my($ftp, $non_pasv) = @_; |
1121 | my($file,$rin,$rout); |
1122 | |
1123 | vec($rin='',fileno($ftp),1) = 1; |
1124 | select($rout=$rin, undef, undef, undef); |
1125 | |
1126 | $ftp->response(); |
1127 | $non_pasv->response(); |
1128 | |
1129 | return undef |
1130 | unless $ftp->ok() && $non_pasv->ok(); |
1131 | |
1132 | return $1 |
1133 | if $ftp->message =~ /unique file name:\s*(\S*)\s*\)/; |
1134 | |
1135 | return $1 |
1136 | if $non_pasv->message =~ /unique file name:\s*(\S*)\s*\)/; |
1137 | |
1138 | return 1; |
1139 | } |
1140 | |
1141 | sub cmd { shift->command(@_)->response() } |
1142 | |
1143 | ######################################## |
1144 | # |
1145 | # RFC959 commands |
1146 | # |
1147 | |
1148 | sub _ABOR { shift->command("ABOR")->response() == CMD_OK } |
1149 | sub _CDUP { shift->command("CDUP")->response() == CMD_OK } |
1150 | sub _NOOP { shift->command("NOOP")->response() == CMD_OK } |
1151 | sub _PASV { shift->command("PASV")->response() == CMD_OK } |
1152 | sub _QUIT { shift->command("QUIT")->response() == CMD_OK } |
1153 | sub _DELE { shift->command("DELE",@_)->response() == CMD_OK } |
1154 | sub _CWD { shift->command("CWD", @_)->response() == CMD_OK } |
1155 | sub _PORT { shift->command("PORT",@_)->response() == CMD_OK } |
1156 | sub _RMD { shift->command("RMD", @_)->response() == CMD_OK } |
1157 | sub _MKD { shift->command("MKD", @_)->response() == CMD_OK } |
1158 | sub _PWD { shift->command("PWD", @_)->response() == CMD_OK } |
1159 | sub _TYPE { shift->command("TYPE",@_)->response() == CMD_OK } |
1160 | sub _RNTO { shift->command("RNTO",@_)->response() == CMD_OK } |
1161 | sub _RESP { shift->command("RESP",@_)->response() == CMD_OK } |
1162 | sub _MDTM { shift->command("MDTM",@_)->response() == CMD_OK } |
1163 | sub _SIZE { shift->command("SIZE",@_)->response() == CMD_OK } |
1164 | sub _HELP { shift->command("HELP",@_)->response() == CMD_OK } |
1165 | sub _STAT { shift->command("STAT",@_)->response() == CMD_OK } |
1166 | sub _APPE { shift->command("APPE",@_)->response() == CMD_INFO } |
1167 | sub _LIST { shift->command("LIST",@_)->response() == CMD_INFO } |
1168 | sub _NLST { shift->command("NLST",@_)->response() == CMD_INFO } |
1169 | sub _RETR { shift->command("RETR",@_)->response() == CMD_INFO } |
1170 | sub _STOR { shift->command("STOR",@_)->response() == CMD_INFO } |
1171 | sub _STOU { shift->command("STOU",@_)->response() == CMD_INFO } |
1172 | sub _RNFR { shift->command("RNFR",@_)->response() == CMD_MORE } |
1173 | sub _REST { shift->command("REST",@_)->response() == CMD_MORE } |
1174 | sub _USER { shift->command("user",@_)->response() } # A certain brain dead firewall :-) |
1175 | sub _PASS { shift->command("PASS",@_)->response() } |
1176 | sub _ACCT { shift->command("ACCT",@_)->response() } |
1177 | sub _AUTH { shift->command("AUTH",@_)->response() } |
1178 | |
1179 | sub _ALLO { shift->unsupported(@_) } |
1180 | sub _SMNT { shift->unsupported(@_) } |
1181 | sub _MODE { shift->unsupported(@_) } |
1182 | sub _SYST { shift->unsupported(@_) } |
1183 | sub _STRU { shift->unsupported(@_) } |
1184 | sub _REIN { shift->unsupported(@_) } |
1185 | |
1186 | 1; |
1187 | |
1188 | __END__ |
1189 | |
1190 | =head1 NAME |
1191 | |
1192 | Net::FTP - FTP Client class |
1193 | |
1194 | =head1 SYNOPSIS |
1195 | |
1196 | use Net::FTP; |
686337f3 |
1197 | |
406c51ee |
1198 | $ftp = Net::FTP->new("some.host.name", Debug => 0); |
c8570720 |
1199 | $ftp->login("anonymous",'-anonymous@'); |
406c51ee |
1200 | $ftp->cwd("/pub"); |
1201 | $ftp->get("that.file"); |
1202 | $ftp->quit; |
1203 | |
1204 | =head1 DESCRIPTION |
1205 | |
1206 | C<Net::FTP> is a class implementing a simple FTP client in Perl as |
1207 | described in RFC959. It provides wrappers for a subset of the RFC959 |
1208 | commands. |
1209 | |
1210 | =head1 OVERVIEW |
1211 | |
1212 | FTP stands for File Transfer Protocol. It is a way of transferring |
1213 | files between networked machines. The protocol defines a client |
1214 | (whose commands are provided by this module) and a server (not |
1215 | implemented in this module). Communication is always initiated by the |
1216 | client, and the server responds with a message and a status code (and |
1217 | sometimes with data). |
1218 | |
1219 | The FTP protocol allows files to be sent to or fetched from the |
1220 | server. Each transfer involves a B<local file> (on the client) and a |
1221 | B<remote file> (on the server). In this module, the same file name |
1222 | will be used for both local and remote if only one is specified. This |
1223 | means that transferring remote file C</path/to/file> will try to put |
1224 | that file in C</path/to/file> locally, unless you specify a local file |
1225 | name. |
1226 | |
1227 | The protocol also defines several standard B<translations> which the |
1228 | file can undergo during transfer. These are ASCII, EBCDIC, binary, |
1229 | and byte. ASCII is the default type, and indicates that the sender of |
1230 | files will translate the ends of lines to a standard representation |
1231 | which the receiver will then translate back into their local |
1232 | representation. EBCDIC indicates the file being transferred is in |
1233 | EBCDIC format. Binary (also known as image) format sends the data as |
1234 | a contiguous bit stream. Byte format transfers the data as bytes, the |
1235 | values of which remain the same regardless of differences in byte size |
1236 | between the two machines (in theory - in practice you should only use |
1237 | this if you really know what you're doing). |
1238 | |
1239 | =head1 CONSTRUCTOR |
1240 | |
1241 | =over 4 |
1242 | |
1243 | =item new (HOST [,OPTIONS]) |
1244 | |
1245 | This is the constructor for a new Net::FTP object. C<HOST> is the |
d1be9408 |
1246 | name of the remote host to which an FTP connection is required. |
406c51ee |
1247 | |
1248 | C<OPTIONS> are passed in a hash like fashion, using key and value pairs. |
1249 | Possible options are: |
1250 | |
d1be9408 |
1251 | B<Firewall> - The name of a machine which acts as an FTP firewall. This can be |
406c51ee |
1252 | overridden by an environment variable C<FTP_FIREWALL>. If specified, and the |
1253 | given host cannot be directly connected to, then the |
1254 | connection is made to the firewall machine and the string C<@hostname> is |
1255 | appended to the login identifier. This kind of setup is also refered to |
d1be9408 |
1256 | as an ftp proxy. |
406c51ee |
1257 | |
302c2e6b |
1258 | B<FirewallType> - The type of firewall running on the machine indicated by |
1259 | B<Firewall>. This can be overridden by an environment variable |
1260 | C<FTP_FIREWALL_TYPE>. For a list of permissible types, see the description of |
1261 | ftp_firewall_type in L<Net::Config>. |
1262 | |
406c51ee |
1263 | B<BlockSize> - This is the block size that Net::FTP will use when doing |
1264 | transfers. (defaults to 10240) |
1265 | |
1266 | B<Port> - The port number to connect to on the remote machine for the |
1267 | FTP connection |
1268 | |
1269 | B<Timeout> - Set a timeout value (defaults to 120) |
1270 | |
1271 | B<Debug> - debug level (see the debug method in L<Net::Cmd>) |
1272 | |
1273 | B<Passive> - If set to a non-zero value then all data transfers will be done |
1274 | using passive mode. This is not usually required except for some I<dumb> |
1275 | servers, and some firewall configurations. This can also be set by the |
1276 | environment variable C<FTP_PASSIVE>. |
1277 | |
a816fa74 |
1278 | B<Hash> - If given a reference to a file handle (e.g., C<\*STDERR>), |
1279 | print hash marks (#) on that filehandle every 1024 bytes. This |
1280 | simply invokes the C<hash()> method for you, so that hash marks |
1281 | are displayed for all transfers. You can, of course, call C<hash()> |
1282 | explicitly whenever you'd like. |
406c51ee |
1283 | |
1284 | If the constructor fails undef will be returned and an error message will |
1285 | be in $@ |
1286 | |
1287 | =back |
1288 | |
1289 | =head1 METHODS |
1290 | |
1291 | Unless otherwise stated all methods return either a I<true> or I<false> |
1292 | value, with I<true> meaning that the operation was a success. When a method |
1293 | states that it returns a value, failure will be returned as I<undef> or an |
1294 | empty list. |
1295 | |
1296 | =over 4 |
1297 | |
1298 | =item login ([LOGIN [,PASSWORD [, ACCOUNT] ] ]) |
1299 | |
1300 | Log into the remote FTP server with the given login information. If |
1301 | no arguments are given then the C<Net::FTP> uses the C<Net::Netrc> |
1302 | package to lookup the login information for the connected host. |
1303 | If no information is found then a login of I<anonymous> is used. |
1304 | If no password is given and the login is I<anonymous> then the users |
1305 | Email address will be used for a password. |
1306 | |
1307 | If the connection is via a firewall then the C<authorize> method will |
1308 | be called with no arguments. |
1309 | |
1310 | =item authorize ( [AUTH [, RESP]]) |
1311 | |
1312 | This is a protocol used by some firewall ftp proxies. It is used |
1313 | to authorise the user to send data out. If both arguments are not specified |
1314 | then C<authorize> uses C<Net::Netrc> to do a lookup. |
1315 | |
1316 | =item site (ARGS) |
1317 | |
1318 | Send a SITE command to the remote server and wait for a response. |
1319 | |
1320 | Returns most significant digit of the response code. |
1321 | |
1322 | =item type (TYPE [, ARGS]) |
1323 | |
1324 | This method will send the TYPE command to the remote FTP server |
1325 | to change the type of data transfer. The return value is the previous |
1326 | value. |
1327 | |
1328 | =item ascii ([ARGS]) binary([ARGS]) ebcdic([ARGS]) byte([ARGS]) |
1329 | |
1330 | Synonyms for C<type> with the first arguments set correctly |
1331 | |
1332 | B<NOTE> ebcdic and byte are not fully supported. |
1333 | |
1334 | =item rename ( OLDNAME, NEWNAME ) |
1335 | |
1336 | Rename a file on the remote FTP server from C<OLDNAME> to C<NEWNAME>. This |
1337 | is done by sending the RNFR and RNTO commands. |
1338 | |
1339 | =item delete ( FILENAME ) |
1340 | |
1341 | Send a request to the server to delete C<FILENAME>. |
1342 | |
1343 | =item cwd ( [ DIR ] ) |
1344 | |
1345 | Attempt to change directory to the directory given in C<$dir>. If |
1346 | C<$dir> is C<"..">, the FTP C<CDUP> command is used to attempt to |
1347 | move up one directory. If no directory is given then an attempt is made |
1348 | to change the directory to the root directory. |
1349 | |
1350 | =item cdup () |
1351 | |
1352 | Change directory to the parent of the current directory. |
1353 | |
1354 | =item pwd () |
1355 | |
1356 | Returns the full pathname of the current directory. |
1357 | |
686337f3 |
1358 | =item restart ( WHERE ) |
1359 | |
1360 | Set the byte offset at which to begin the next data transfer. Net::FTP simply |
1361 | records this value and uses it when during the next data transfer. For this |
1362 | reason this method will not return an error, but setting it may cause |
1363 | a subsequent data transfer to fail. |
1364 | |
406c51ee |
1365 | =item rmdir ( DIR ) |
1366 | |
1367 | Remove the directory with the name C<DIR>. |
1368 | |
1369 | =item mkdir ( DIR [, RECURSE ]) |
1370 | |
1371 | Create a new directory with the name C<DIR>. If C<RECURSE> is I<true> then |
1372 | C<mkdir> will attempt to create all the directories in the given path. |
1373 | |
1374 | Returns the full pathname to the new directory. |
1375 | |
1376 | =item ls ( [ DIR ] ) |
1377 | |
1378 | Get a directory listing of C<DIR>, or the current directory. |
1379 | |
1380 | In an array context, returns a list of lines returned from the server. In |
1381 | a scalar context, returns a reference to a list. |
1382 | |
1383 | =item dir ( [ DIR ] ) |
1384 | |
1385 | Get a directory listing of C<DIR>, or the current directory in long format. |
1386 | |
1387 | In an array context, returns a list of lines returned from the server. In |
1388 | a scalar context, returns a reference to a list. |
1389 | |
1390 | =item get ( REMOTE_FILE [, LOCAL_FILE [, WHERE]] ) |
1391 | |
1392 | Get C<REMOTE_FILE> from the server and store locally. C<LOCAL_FILE> may be |
d1be9408 |
1393 | a filename or a filehandle. If not specified, the file will be stored in |
406c51ee |
1394 | the current directory with the same leafname as the remote file. |
1395 | |
1396 | If C<WHERE> is given then the first C<WHERE> bytes of the file will |
1397 | not be transfered, and the remaining bytes will be appended to |
1398 | the local file if it already exists. |
1399 | |
1400 | Returns C<LOCAL_FILE>, or the generated local file name if C<LOCAL_FILE> |
686337f3 |
1401 | is not given. If an error was encountered undef is returned. |
406c51ee |
1402 | |
1403 | =item put ( LOCAL_FILE [, REMOTE_FILE ] ) |
1404 | |
1405 | Put a file on the remote server. C<LOCAL_FILE> may be a name or a filehandle. |
1406 | If C<LOCAL_FILE> is a filehandle then C<REMOTE_FILE> must be specified. If |
1407 | C<REMOTE_FILE> is not specified then the file will be stored in the current |
1408 | directory with the same leafname as C<LOCAL_FILE>. |
1409 | |
1410 | Returns C<REMOTE_FILE>, or the generated remote filename if C<REMOTE_FILE> |
1411 | is not given. |
1412 | |
1413 | B<NOTE>: If for some reason the transfer does not complete and an error is |
1414 | returned then the contents that had been transfered will not be remove |
1415 | automatically. |
1416 | |
1417 | =item put_unique ( LOCAL_FILE [, REMOTE_FILE ] ) |
1418 | |
1419 | Same as put but uses the C<STOU> command. |
1420 | |
1421 | Returns the name of the file on the server. |
1422 | |
1423 | =item append ( LOCAL_FILE [, REMOTE_FILE ] ) |
1424 | |
1425 | Same as put but appends to the file on the remote server. |
1426 | |
1427 | Returns C<REMOTE_FILE>, or the generated remote filename if C<REMOTE_FILE> |
1428 | is not given. |
1429 | |
1430 | =item unique_name () |
1431 | |
1432 | Returns the name of the last file stored on the server using the |
1433 | C<STOU> command. |
1434 | |
1435 | =item mdtm ( FILE ) |
1436 | |
1437 | Returns the I<modification time> of the given file |
1438 | |
1439 | =item size ( FILE ) |
1440 | |
1441 | Returns the size in bytes for the given file as stored on the remote server. |
1442 | |
1443 | B<NOTE>: The size reported is the size of the stored file on the remote server. |
1444 | If the file is subsequently transfered from the server in ASCII mode |
1445 | and the remote server and local machine have different ideas about |
1446 | "End Of Line" then the size of file on the local machine after transfer |
1447 | may be different. |
1448 | |
1449 | =item supported ( CMD ) |
1450 | |
1451 | Returns TRUE if the remote server supports the given command. |
1452 | |
1453 | =item hash ( [FILEHANDLE_GLOB_REF],[ BYTES_PER_HASH_MARK] ) |
1454 | |
1455 | Called without parameters, or with the first argument false, hash marks |
1456 | are suppressed. If the first argument is true but not a reference to a |
1457 | file handle glob, then \*STDERR is used. The second argument is the number |
1458 | of bytes per hash mark printed, and defaults to 1024. In all cases the |
1459 | return value is a reference to an array of two: the filehandle glob reference |
1460 | and the bytes per hash mark. |
1461 | |
1462 | =back |
1463 | |
1464 | The following methods can return different results depending on |
1465 | how they are called. If the user explicitly calls either |
1466 | of the C<pasv> or C<port> methods then these methods will |
1467 | return a I<true> or I<false> value. If the user does not |
1468 | call either of these methods then the result will be a |
1469 | reference to a C<Net::FTP::dataconn> based object. |
1470 | |
1471 | =over 4 |
1472 | |
1473 | =item nlst ( [ DIR ] ) |
1474 | |
d1be9408 |
1475 | Send an C<NLST> command to the server, with an optional parameter. |
406c51ee |
1476 | |
1477 | =item list ( [ DIR ] ) |
1478 | |
1479 | Same as C<nlst> but using the C<LIST> command |
1480 | |
1481 | =item retr ( FILE ) |
1482 | |
1483 | Begin the retrieval of a file called C<FILE> from the remote server. |
1484 | |
1485 | =item stor ( FILE ) |
1486 | |
1487 | Tell the server that you wish to store a file. C<FILE> is the |
1488 | name of the new file that should be created. |
1489 | |
1490 | =item stou ( FILE ) |
1491 | |
1492 | Same as C<stor> but using the C<STOU> command. The name of the unique |
1493 | file which was created on the server will be available via the C<unique_name> |
1494 | method after the data connection has been closed. |
1495 | |
1496 | =item appe ( FILE ) |
1497 | |
1498 | Tell the server that we want to append some data to the end of a file |
1499 | called C<FILE>. If this file does not exist then create it. |
1500 | |
1501 | =back |
1502 | |
1503 | If for some reason you want to have complete control over the data connection, |
1504 | this includes generating it and calling the C<response> method when required, |
1505 | then the user can use these methods to do so. |
1506 | |
1507 | However calling these methods only affects the use of the methods above that |
1508 | can return a data connection. They have no effect on methods C<get>, C<put>, |
1509 | C<put_unique> and those that do not require data connections. |
1510 | |
1511 | =over 4 |
1512 | |
1513 | =item port ( [ PORT ] ) |
1514 | |
1515 | Send a C<PORT> command to the server. If C<PORT> is specified then it is sent |
c8570720 |
1516 | to the server. If not, then a listen socket is created and the correct information |
406c51ee |
1517 | sent to the server. |
1518 | |
1519 | =item pasv () |
1520 | |
1521 | Tell the server to go into passive mode. Returns the text that represents the |
1522 | port on which the server is listening, this text is in a suitable form to |
1523 | sent to another ftp server using the C<port> method. |
1524 | |
1525 | =back |
1526 | |
1527 | The following methods can be used to transfer files between two remote |
1528 | servers, providing that these two servers can connect directly to each other. |
1529 | |
1530 | =over 4 |
1531 | |
1532 | =item pasv_xfer ( SRC_FILE, DEST_SERVER [, DEST_FILE ] ) |
1533 | |
1534 | This method will do a file transfer between two remote ftp servers. If |
1535 | C<DEST_FILE> is omitted then the leaf name of C<SRC_FILE> will be used. |
1536 | |
1537 | =item pasv_xfer_unique ( SRC_FILE, DEST_SERVER [, DEST_FILE ] ) |
1538 | |
1539 | Like C<pasv_xfer> but the file is stored on the remote server using |
1540 | the STOU command. |
1541 | |
1542 | =item pasv_wait ( NON_PASV_SERVER ) |
1543 | |
1544 | This method can be used to wait for a transfer to complete between a passive |
1545 | server and a non-passive server. The method should be called on the passive |
1546 | server with the C<Net::FTP> object for the non-passive server passed as an |
1547 | argument. |
1548 | |
1549 | =item abort () |
1550 | |
1551 | Abort the current data transfer. |
1552 | |
1553 | =item quit () |
1554 | |
1555 | Send the QUIT command to the remote FTP server and close the socket connection. |
1556 | |
1557 | =back |
1558 | |
1559 | =head2 Methods for the adventurous |
1560 | |
1561 | C<Net::FTP> inherits from C<Net::Cmd> so methods defined in C<Net::Cmd> may |
1562 | be used to send commands to the remote FTP server. |
1563 | |
1564 | =over 4 |
1565 | |
1566 | =item quot (CMD [,ARGS]) |
1567 | |
1568 | Send a command, that Net::FTP does not directly support, to the remote |
1569 | server and wait for a response. |
1570 | |
1571 | Returns most significant digit of the response code. |
1572 | |
1573 | B<WARNING> This call should only be used on commands that do not require |
1574 | data connections. Misuse of this method can hang the connection. |
1575 | |
1576 | =back |
1577 | |
1578 | =head1 THE dataconn CLASS |
1579 | |
1580 | Some of the methods defined in C<Net::FTP> return an object which will |
1581 | be derived from this class.The dataconn class itself is derived from |
1582 | the C<IO::Socket::INET> class, so any normal IO operations can be performed. |
1583 | However the following methods are defined in the dataconn class and IO should |
1584 | be performed using these. |
1585 | |
1586 | =over 4 |
1587 | |
1588 | =item read ( BUFFER, SIZE [, TIMEOUT ] ) |
1589 | |
1590 | Read C<SIZE> bytes of data from the server and place it into C<BUFFER>, also |
1591 | performing any <CRLF> translation necessary. C<TIMEOUT> is optional, if not |
d1be9408 |
1592 | given, the timeout value from the command connection will be used. |
406c51ee |
1593 | |
1594 | Returns the number of bytes read before any <CRLF> translation. |
1595 | |
1596 | =item write ( BUFFER, SIZE [, TIMEOUT ] ) |
1597 | |
1598 | Write C<SIZE> bytes of data from C<BUFFER> to the server, also |
1599 | performing any <CRLF> translation necessary. C<TIMEOUT> is optional, if not |
d1be9408 |
1600 | given, the timeout value from the command connection will be used. |
406c51ee |
1601 | |
1602 | Returns the number of bytes written before any <CRLF> translation. |
1603 | |
686337f3 |
1604 | =item bytes_read () |
1605 | |
1606 | Returns the number of bytes read so far. |
1607 | |
406c51ee |
1608 | =item abort () |
1609 | |
1610 | Abort the current data transfer. |
1611 | |
1612 | =item close () |
1613 | |
1614 | Close the data connection and get a response from the FTP server. Returns |
1615 | I<true> if the connection was closed successfully and the first digit of |
1616 | the response from the server was a '2'. |
1617 | |
1618 | =back |
1619 | |
1620 | =head1 UNIMPLEMENTED |
1621 | |
1622 | The following RFC959 commands have not been implemented: |
1623 | |
1624 | =over 4 |
1625 | |
1626 | =item B<ALLO> |
1627 | |
1628 | Allocates storage for the file to be transferred. |
1629 | |
1630 | =item B<SMNT> |
1631 | |
1632 | Mount a different file system structure without changing login or |
1633 | accounting information. |
1634 | |
1635 | =item B<HELP> |
1636 | |
1637 | Ask the server for "helpful information" (that's what the RFC says) on |
1638 | the commands it accepts. |
1639 | |
1640 | =item B<MODE> |
1641 | |
1642 | Specifies transfer mode (stream, block or compressed) for file to be |
1643 | transferred. |
1644 | |
1645 | =item B<SYST> |
1646 | |
1647 | Request remote server system identification. |
1648 | |
1649 | =item B<STAT> |
1650 | |
1651 | Request remote server status. |
1652 | |
1653 | =item B<STRU> |
1654 | |
1655 | Specifies file structure for file to be transferred. |
1656 | |
1657 | =item B<REIN> |
1658 | |
1659 | Reinitialize the connection, flushing all I/O and account information. |
1660 | |
1661 | =back |
1662 | |
1663 | =head1 REPORTING BUGS |
1664 | |
1665 | When reporting bugs/problems please include as much information as possible. |
1666 | It may be difficult for me to reproduce the problem as almost every setup |
1667 | is different. |
1668 | |
1669 | A small script which yields the problem will probably be of help. It would |
1670 | also be useful if this script was run with the extra options C<Debug => 1> |
1671 | passed to the constructor, and the output sent with the bug report. If you |
1672 | cannot include a small script then please include a Debug trace from a |
1673 | run of your program which does yield the problem. |
1674 | |
1675 | =head1 AUTHOR |
1676 | |
1677 | Graham Barr <gbarr@pobox.com> |
1678 | |
1679 | =head1 SEE ALSO |
1680 | |
1681 | L<Net::Netrc> |
1682 | L<Net::Cmd> |
1683 | |
1684 | ftp(1), ftpd(8), RFC 959 |
1685 | http://www.cis.ohio-state.edu/htbin/rfc/rfc959.html |
1686 | |
686337f3 |
1687 | =head1 USE EXAMPLES |
1688 | |
1689 | For an example of the use of Net::FTP see |
1690 | |
1691 | =over 4 |
1692 | |
1693 | =item http://www.csh.rit.edu/~adam/Progs/autoftp-2.0.tar.gz |
1694 | |
1695 | C<autoftp> is a program that can retrieve, send, or list files via |
1696 | the FTP protocol in a non-interactive manner. |
1697 | |
1698 | =back |
1699 | |
406c51ee |
1700 | =head1 CREDITS |
1701 | |
1702 | Henry Gabryjelski <henryg@WPI.EDU> - for the suggestion of creating directories |
1703 | recursively. |
1704 | |
1705 | Nathan Torkington <gnat@frii.com> - for some input on the documentation. |
1706 | |
1707 | Roderick Schertler <roderick@gate.net> - for various inputs |
1708 | |
1709 | =head1 COPYRIGHT |
1710 | |
1711 | Copyright (c) 1995-1998 Graham Barr. All rights reserved. |
1712 | This program is free software; you can redistribute it and/or modify it |
1713 | under the same terms as Perl itself. |
1714 | |
686337f3 |
1715 | =for html <hr> |
1716 | |
c8570720 |
1717 | I<$Id: //depot/libnet/Net/FTP.pm#64 $> |
686337f3 |
1718 | |
406c51ee |
1719 | =cut |