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406c51ee JH |
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; | |
22 | # use AutoLoader qw(AUTOLOAD); | |
23 | ||
686337f3 | 24 | $VERSION = "2.58"; # $Id: //depot/libnet/Net/FTP.pm#57 $ |
406c51ee JH |
25 | @ISA = qw(Exporter Net::Cmd IO::Socket::INET); |
26 | ||
27 | # Someday I will "use constant", when I am not bothered to much about | |
28 | # compatability with older releases of perl | |
29 | ||
30 | use vars qw($TELNET_IAC $TELNET_IP $TELNET_DM); | |
31 | ($TELNET_IAC,$TELNET_IP,$TELNET_DM) = (255,244,242); | |
32 | ||
33 | # Name is too long for AutoLoad, it clashes with pasv_xfer | |
34 | sub pasv_xfer_unique { | |
35 | my($sftp,$sfile,$dftp,$dfile) = @_; | |
36 | $sftp->pasv_xfer($sfile,$dftp,$dfile,1); | |
37 | } | |
38 | ||
686337f3 JH |
39 | BEGIN { |
40 | # make a constant so code is fast'ish | |
41 | my $is_os390 = $^O eq 'os390'; | |
42 | *trEBCDIC = sub () { $is_os390 } | |
43 | } | |
44 | ||
406c51ee JH |
45 | 1; |
46 | # Having problems with AutoLoader | |
47 | #__END__ | |
48 | ||
49 | sub new | |
50 | { | |
51 | my $pkg = shift; | |
52 | my $peer = shift; | |
53 | my %arg = @_; | |
54 | ||
55 | my $host = $peer; | |
56 | my $fire = undef; | |
57 | ||
58 | if(exists($arg{Firewall}) || Net::Config->requires_firewall($peer)) | |
59 | { | |
60 | $fire = $arg{Firewall} | |
61 | || $ENV{FTP_FIREWALL} | |
62 | || $NetConfig{ftp_firewall} | |
63 | || undef; | |
64 | ||
65 | if(defined $fire) | |
66 | { | |
67 | $peer = $fire; | |
68 | delete $arg{Port}; | |
69 | } | |
70 | } | |
71 | ||
72 | my $ftp = $pkg->SUPER::new(PeerAddr => $peer, | |
73 | PeerPort => $arg{Port} || 'ftp(21)', | |
74 | Proto => 'tcp', | |
75 | Timeout => defined $arg{Timeout} | |
76 | ? $arg{Timeout} | |
77 | : 120 | |
78 | ) or return undef; | |
79 | ||
80 | ${*$ftp}{'net_ftp_host'} = $host; # Remote hostname | |
81 | ${*$ftp}{'net_ftp_type'} = 'A'; # ASCII/binary/etc mode | |
82 | ${*$ftp}{'net_ftp_blksize'} = abs($arg{'BlockSize'} || 10240); | |
83 | ||
84 | ${*$ftp}{'net_ftp_firewall'} = $fire | |
85 | if(defined $fire); | |
86 | ||
87 | ${*$ftp}{'net_ftp_passive'} = int | |
88 | exists $arg{Passive} | |
89 | ? $arg{Passive} | |
90 | : exists $ENV{FTP_PASSIVE} | |
91 | ? $ENV{FTP_PASSIVE} | |
92 | : defined $fire | |
93 | ? $NetConfig{ftp_ext_passive} | |
94 | : $NetConfig{ftp_int_passive}; # Whew! :-) | |
95 | ||
96 | $ftp->hash(exists $arg{Hash} ? $arg{Hash} : 0, 1024); | |
97 | ||
98 | $ftp->autoflush(1); | |
99 | ||
100 | $ftp->debug(exists $arg{Debug} ? $arg{Debug} : undef); | |
101 | ||
102 | unless ($ftp->response() == CMD_OK) | |
103 | { | |
104 | $ftp->close(); | |
105 | $@ = $ftp->message; | |
106 | undef $ftp; | |
107 | } | |
108 | ||
109 | $ftp; | |
110 | } | |
111 | ||
112 | ## | |
113 | ## User interface methods | |
114 | ## | |
115 | ||
116 | sub hash { | |
117 | my $ftp = shift; # self | |
118 | my $prev = ${*$ftp}{'net_ftp_hash'} || [\*STDERR, 0]; | |
119 | ||
120 | unless(@_) { | |
121 | return $prev; | |
122 | } | |
123 | my($h,$b) = @_; | |
124 | if(@_ == 1) { | |
125 | unless($h) { | |
126 | delete ${*$ftp}{'net_ftp_hash'}; | |
127 | return $prev; | |
128 | } | |
129 | elsif(ref($h)) { | |
130 | $b = 1024; | |
131 | } | |
132 | else { | |
133 | ($h,$b) = (\*STDERR,$h); | |
134 | } | |
135 | } | |
136 | select((select($h), $|=1)[0]); | |
137 | $b = 512 if $b < 512; | |
138 | ${*$ftp}{'net_ftp_hash'} = [$h, $b]; | |
139 | $prev; | |
140 | } | |
141 | ||
142 | sub quit | |
143 | { | |
144 | my $ftp = shift; | |
145 | ||
146 | $ftp->_QUIT; | |
147 | $ftp->close; | |
148 | } | |
149 | ||
150 | sub DESTROY | |
151 | { | |
152 | my $ftp = shift; | |
153 | defined(fileno($ftp)) && $ftp->quit | |
154 | } | |
155 | ||
156 | sub ascii { shift->type('A',@_); } | |
157 | sub binary { shift->type('I',@_); } | |
158 | ||
159 | sub ebcdic | |
160 | { | |
161 | carp "TYPE E is unsupported, shall default to I"; | |
162 | shift->type('E',@_); | |
163 | } | |
164 | ||
165 | sub byte | |
166 | { | |
167 | carp "TYPE L is unsupported, shall default to I"; | |
168 | shift->type('L',@_); | |
169 | } | |
170 | ||
171 | # Allow the user to send a command directly, BE CAREFUL !! | |
172 | ||
173 | sub quot | |
174 | { | |
175 | my $ftp = shift; | |
176 | my $cmd = shift; | |
177 | ||
178 | $ftp->command( uc $cmd, @_); | |
179 | $ftp->response(); | |
180 | } | |
181 | ||
182 | sub site | |
183 | { | |
184 | my $ftp = shift; | |
185 | ||
186 | $ftp->command("SITE", @_); | |
187 | $ftp->response(); | |
188 | } | |
189 | ||
190 | sub mdtm | |
191 | { | |
192 | my $ftp = shift; | |
193 | my $file = shift; | |
194 | ||
195 | # Server Y2K bug workaround | |
196 | # | |
197 | # sigh; some idiotic FTP servers use ("19%d",tm.tm_year) instead of | |
198 | # ("%d",tm.tm_year+1900). This results in an extra digit in the | |
199 | # string returned. To account for this we allow an optional extra | |
200 | # digit in the year. Then if the first two digits are 19 we use the | |
201 | # remainder, otherwise we subtract 1900 from the whole year. | |
202 | ||
203 | $ftp->_MDTM($file) && $ftp->message =~ /((\d\d)(\d\d\d?))(\d\d)(\d\d)(\d\d)(\d\d)(\d\d)/ | |
204 | ? timegm($8,$7,$6,$5,$4-1,$2 eq '19' ? $3 : ($1-1900)) | |
205 | : undef; | |
206 | } | |
207 | ||
208 | sub size { | |
209 | my $ftp = shift; | |
210 | my $file = shift; | |
211 | my $io; | |
212 | if($ftp->supported("SIZE")) { | |
213 | return $ftp->_SIZE($file) | |
686337f3 | 214 | ? ($ftp->message =~ /(\d+)$/)[0] |
406c51ee JH |
215 | : undef; |
216 | } | |
217 | elsif($ftp->supported("STAT")) { | |
218 | my @msg; | |
219 | return undef | |
220 | unless $ftp->_STAT($file) && (@msg = $ftp->message) == 3; | |
221 | my $line; | |
222 | foreach $line (@msg) { | |
223 | return (split(/\s+/,$line))[4] | |
224 | if $line =~ /^[-rw]{10}/ | |
225 | } | |
226 | } | |
227 | else { | |
228 | my @files = $ftp->dir($file); | |
229 | if(@files) { | |
230 | return (split(/\s+/,$1))[4] | |
231 | if $files[0] =~ /^([-rw]{10}.*)$/; | |
232 | } | |
233 | } | |
234 | undef; | |
235 | } | |
236 | ||
237 | sub login { | |
238 | my($ftp,$user,$pass,$acct) = @_; | |
239 | my($ok,$ruser,$fwtype); | |
240 | ||
241 | unless (defined $user) { | |
242 | require Net::Netrc; | |
243 | ||
244 | my $rc = Net::Netrc->lookup(${*$ftp}{'net_ftp_host'}); | |
245 | ||
246 | ($user,$pass,$acct) = $rc->lpa() | |
247 | if ($rc); | |
248 | } | |
249 | ||
250 | $user ||= "anonymous"; | |
251 | $ruser = $user; | |
252 | ||
253 | $fwtype = $NetConfig{'ftp_firewall_type'} || 0; | |
254 | ||
255 | if ($fwtype && defined ${*$ftp}{'net_ftp_firewall'}) { | |
256 | if ($fwtype == 1 || $fwtype == 7) { | |
257 | $user .= '@' . ${*$ftp}{'net_ftp_host'}; | |
258 | } | |
259 | else { | |
260 | require Net::Netrc; | |
261 | ||
262 | my $rc = Net::Netrc->lookup(${*$ftp}{'net_ftp_firewall'}); | |
263 | ||
264 | my($fwuser,$fwpass,$fwacct) = $rc ? $rc->lpa() : (); | |
265 | ||
266 | if ($fwtype == 5) { | |
267 | $user = join('@',$user,$fwuser,${*$ftp}{'net_ftp_host'}); | |
268 | $pass = $pass . '@' . $fwpass; | |
269 | } | |
270 | else { | |
271 | if ($fwtype == 2) { | |
272 | $user .= '@' . ${*$ftp}{'net_ftp_host'}; | |
273 | } | |
274 | elsif ($fwtype == 6) { | |
275 | $fwuser .= '@' . ${*$ftp}{'net_ftp_host'}; | |
276 | } | |
277 | ||
278 | $ok = $ftp->_USER($fwuser); | |
279 | ||
280 | return 0 unless $ok == CMD_OK || $ok == CMD_MORE; | |
281 | ||
282 | $ok = $ftp->_PASS($fwpass || ""); | |
283 | ||
284 | return 0 unless $ok == CMD_OK || $ok == CMD_MORE; | |
285 | ||
286 | $ok = $ftp->_ACCT($fwacct) | |
287 | if defined($fwacct); | |
288 | ||
289 | if ($fwtype == 3) { | |
290 | $ok = $ftp->command("SITE",${*$ftp}{'net_ftp_host'})->response; | |
291 | } | |
292 | elsif ($fwtype == 4) { | |
293 | $ok = $ftp->command("OPEN",${*$ftp}{'net_ftp_host'})->response; | |
294 | } | |
295 | ||
296 | return 0 unless $ok == CMD_OK || $ok == CMD_MORE; | |
297 | } | |
298 | } | |
299 | } | |
300 | ||
301 | $ok = $ftp->_USER($user); | |
302 | ||
303 | # Some dumb firewalls don't prefix the connection messages | |
304 | $ok = $ftp->response() | |
305 | if ($ok == CMD_OK && $ftp->code == 220 && $user =~ /\@/); | |
306 | ||
307 | if ($ok == CMD_MORE) { | |
308 | unless(defined $pass) { | |
309 | require Net::Netrc; | |
310 | ||
311 | my $rc = Net::Netrc->lookup(${*$ftp}{'net_ftp_host'}, $ruser); | |
312 | ||
313 | ($ruser,$pass,$acct) = $rc->lpa() | |
314 | if ($rc); | |
315 | ||
316 | $pass = "-" . (eval { (getpwuid($>))[0] } || $ENV{NAME} ) . '@' | |
317 | if (!defined $pass && (!defined($ruser) || $ruser =~ /^anonymous/o)); | |
318 | } | |
319 | ||
320 | $ok = $ftp->_PASS($pass || ""); | |
321 | } | |
322 | ||
323 | $ok = $ftp->_ACCT($acct) | |
324 | if (defined($acct) && ($ok == CMD_MORE || $ok == CMD_OK)); | |
325 | ||
326 | if ($fwtype == 7 && $ok == CMD_OK && defined ${*$ftp}{'net_ftp_firewall'}) { | |
327 | my($f,$auth,$resp) = _auth_id($ftp); | |
328 | $ftp->authorize($auth,$resp) if defined($resp); | |
329 | } | |
330 | ||
331 | $ok == CMD_OK; | |
332 | } | |
333 | ||
334 | sub account | |
335 | { | |
336 | @_ == 2 or croak 'usage: $ftp->account( ACCT )'; | |
337 | my $ftp = shift; | |
338 | my $acct = shift; | |
339 | $ftp->_ACCT($acct) == CMD_OK; | |
340 | } | |
341 | ||
342 | sub _auth_id { | |
343 | my($ftp,$auth,$resp) = @_; | |
344 | ||
345 | unless(defined $resp) | |
346 | { | |
347 | require Net::Netrc; | |
348 | ||
349 | $auth ||= eval { (getpwuid($>))[0] } || $ENV{NAME}; | |
350 | ||
351 | my $rc = Net::Netrc->lookup(${*$ftp}{'net_ftp_firewall'}, $auth) | |
352 | || Net::Netrc->lookup(${*$ftp}{'net_ftp_firewall'}); | |
353 | ||
354 | ($auth,$resp) = $rc->lpa() | |
355 | if ($rc); | |
356 | } | |
357 | ($ftp,$auth,$resp); | |
358 | } | |
359 | ||
360 | sub authorize | |
361 | { | |
362 | @_ >= 1 || @_ <= 3 or croak 'usage: $ftp->authorize( [AUTH [, RESP]])'; | |
363 | ||
364 | my($ftp,$auth,$resp) = &_auth_id; | |
365 | ||
366 | my $ok = $ftp->_AUTH($auth || ""); | |
367 | ||
368 | $ok = $ftp->_RESP($resp || "") | |
369 | if ($ok == CMD_MORE); | |
370 | ||
371 | $ok == CMD_OK; | |
372 | } | |
373 | ||
374 | sub rename | |
375 | { | |
376 | @_ == 3 or croak 'usage: $ftp->rename(FROM, TO)'; | |
377 | ||
378 | my($ftp,$from,$to) = @_; | |
379 | ||
380 | $ftp->_RNFR($from) | |
381 | && $ftp->_RNTO($to); | |
382 | } | |
383 | ||
384 | sub type | |
385 | { | |
386 | my $ftp = shift; | |
387 | my $type = shift; | |
388 | my $oldval = ${*$ftp}{'net_ftp_type'}; | |
389 | ||
390 | return $oldval | |
391 | unless (defined $type); | |
392 | ||
393 | return undef | |
394 | unless ($ftp->_TYPE($type,@_)); | |
395 | ||
396 | ${*$ftp}{'net_ftp_type'} = join(" ",$type,@_); | |
397 | ||
398 | $oldval; | |
399 | } | |
400 | ||
401 | sub abort | |
402 | { | |
403 | my $ftp = shift; | |
404 | ||
405 | send($ftp,pack("CCC", $TELNET_IAC, $TELNET_IP, $TELNET_IAC),MSG_OOB); | |
406 | ||
407 | $ftp->command(pack("C",$TELNET_DM) . "ABOR"); | |
686337f3 | 408 | |
406c51ee JH |
409 | ${*$ftp}{'net_ftp_dataconn'}->close() |
410 | if defined ${*$ftp}{'net_ftp_dataconn'}; | |
411 | ||
412 | $ftp->response(); | |
413 | ||
414 | $ftp->status == CMD_OK; | |
415 | } | |
416 | ||
417 | sub get | |
418 | { | |
419 | my($ftp,$remote,$local,$where) = @_; | |
420 | ||
421 | my($loc,$len,$buf,$resp,$localfd,$data); | |
422 | local *FD; | |
423 | ||
424 | $localfd = ref($local) || ref(\$local) eq "GLOB" | |
425 | ? fileno($local) | |
426 | : undef; | |
427 | ||
428 | ($local = $remote) =~ s#^.*/## | |
429 | unless(defined $local); | |
430 | ||
431 | croak("Bad remote filename '$remote'\n") | |
432 | if $remote =~ /[\r\n]/s; | |
433 | ||
434 | ${*$ftp}{'net_ftp_rest'} = $where | |
435 | if ($where); | |
436 | ||
437 | delete ${*$ftp}{'net_ftp_port'}; | |
438 | delete ${*$ftp}{'net_ftp_pasv'}; | |
439 | ||
440 | $data = $ftp->retr($remote) or | |
441 | return undef; | |
442 | ||
443 | if(defined $localfd) | |
444 | { | |
445 | $loc = $local; | |
446 | } | |
447 | else | |
448 | { | |
449 | $loc = \*FD; | |
450 | ||
451 | unless(($where) ? open($loc,">>$local") : open($loc,">$local")) | |
452 | { | |
453 | carp "Cannot open Local file $local: $!\n"; | |
454 | $data->abort; | |
455 | return undef; | |
456 | } | |
457 | } | |
458 | ||
459 | if($ftp->type eq 'I' && !binmode($loc)) | |
460 | { | |
461 | carp "Cannot binmode Local file $local: $!\n"; | |
462 | $data->abort; | |
463 | close($loc) unless $localfd; | |
464 | return undef; | |
465 | } | |
466 | ||
467 | $buf = ''; | |
468 | my($count,$hashh,$hashb,$ref) = (0); | |
469 | ||
470 | ($hashh,$hashb) = @$ref | |
471 | if($ref = ${*$ftp}{'net_ftp_hash'}); | |
472 | ||
473 | my $blksize = ${*$ftp}{'net_ftp_blksize'}; | |
474 | ||
475 | while(1) | |
476 | { | |
477 | last unless $len = $data->read($buf,$blksize); | |
686337f3 JH |
478 | |
479 | if (trEBCDIC && $ftp->type ne 'I') | |
480 | { | |
481 | $buf = $ftp->toebcdic($buf); | |
482 | $len = length($buf); | |
483 | } | |
484 | ||
406c51ee JH |
485 | if($hashh) { |
486 | $count += $len; | |
487 | print $hashh "#" x (int($count / $hashb)); | |
488 | $count %= $hashb; | |
489 | } | |
490 | my $written = syswrite($loc,$buf,$len); | |
491 | unless(defined($written) && $written == $len) | |
492 | { | |
493 | carp "Cannot write to Local file $local: $!\n"; | |
494 | $data->abort; | |
495 | close($loc) | |
496 | unless defined $localfd; | |
497 | return undef; | |
498 | } | |
499 | } | |
500 | ||
501 | print $hashh "\n" if $hashh; | |
502 | ||
686337f3 JH |
503 | unless (defined $localfd) |
504 | { | |
505 | unless (close($loc)) | |
506 | { | |
507 | carp "Cannot close file $local (perhaps disk space) $!\n"; | |
508 | return undef; | |
509 | } | |
510 | } | |
511 | ||
512 | unless ($data->close()) # implied $ftp->response | |
513 | { | |
514 | carp "Unable to close datastream"; | |
515 | return undef; | |
516 | } | |
406c51ee JH |
517 | |
518 | return $local; | |
519 | } | |
520 | ||
521 | sub cwd | |
522 | { | |
523 | @_ == 1 || @_ == 2 or croak 'usage: $ftp->cwd( [ DIR ] )'; | |
524 | ||
525 | my($ftp,$dir) = @_; | |
526 | ||
527 | $dir = "/" unless defined($dir) && $dir =~ /\S/; | |
528 | ||
529 | $dir eq ".." | |
530 | ? $ftp->_CDUP() | |
531 | : $ftp->_CWD($dir); | |
532 | } | |
533 | ||
534 | sub cdup | |
535 | { | |
536 | @_ == 1 or croak 'usage: $ftp->cdup()'; | |
537 | $_[0]->_CDUP; | |
538 | } | |
539 | ||
540 | sub pwd | |
541 | { | |
542 | @_ == 1 || croak 'usage: $ftp->pwd()'; | |
543 | my $ftp = shift; | |
544 | ||
545 | $ftp->_PWD(); | |
546 | $ftp->_extract_path; | |
547 | } | |
548 | ||
549 | # rmdir( $ftp, $dir, [ $recurse ] ) | |
550 | # | |
551 | # Removes $dir on remote host via FTP. | |
552 | # $ftp is handle for remote host | |
553 | # | |
554 | # If $recurse is TRUE, the directory and deleted recursively. | |
555 | # This means all of its contents and subdirectories. | |
556 | # | |
557 | # Initial version contributed by Dinkum Software | |
558 | # | |
559 | sub rmdir | |
560 | { | |
561 | @_ == 2 || @_ == 3 or croak('usage: $ftp->rmdir( DIR [, RECURSE ] )'); | |
562 | ||
563 | # Pick off the args | |
564 | my ($ftp, $dir, $recurse) = @_ ; | |
565 | my $ok; | |
566 | ||
567 | return $ok | |
686337f3 | 568 | if $ok = $ftp->_RMD( $dir ) or !$recurse; |
406c51ee JH |
569 | |
570 | # Try to delete the contents | |
571 | # Get a list of all the files in the directory | |
572 | my $filelist = $ftp->ls($dir); | |
573 | ||
574 | return undef | |
575 | unless $filelist && @$filelist; # failed, it is probably not a directory | |
576 | ||
577 | # Go thru and delete each file or the directory | |
578 | my $file; | |
579 | foreach $file (map { m,/, ? $_ : "$dir/$_" } @$filelist) | |
580 | { | |
581 | next # successfully deleted the file | |
582 | if $ftp->delete($file); | |
583 | ||
584 | # Failed to delete it, assume its a directory | |
585 | # Recurse and ignore errors, the final rmdir() will | |
586 | # fail on any errors here | |
587 | return $ok | |
588 | unless $ok = $ftp->rmdir($file, 1) ; | |
589 | } | |
590 | ||
591 | # Directory should be empty | |
592 | # Try to remove the directory again | |
593 | # Pass results directly to caller | |
594 | # If any of the prior deletes failed, this | |
595 | # rmdir() will fail because directory is not empty | |
596 | return $ftp->_RMD($dir) ; | |
597 | } | |
598 | ||
686337f3 JH |
599 | sub restart |
600 | { | |
601 | @_ == 2 || croak 'usage: $ftp->restart( BYTE_OFFSET )'; | |
602 | ||
603 | my($ftp,$where) = @_; | |
604 | ||
605 | ${*$ftp}{'net_ftp_rest'} = $where; | |
606 | ||
607 | return undef; | |
608 | } | |
609 | ||
610 | ||
406c51ee JH |
611 | sub mkdir |
612 | { | |
613 | @_ == 2 || @_ == 3 or croak 'usage: $ftp->mkdir( DIR [, RECURSE ] )'; | |
614 | ||
615 | my($ftp,$dir,$recurse) = @_; | |
616 | ||
617 | $ftp->_MKD($dir) || $recurse or | |
618 | return undef; | |
619 | ||
620 | my $path = $dir; | |
621 | ||
622 | unless($ftp->ok) | |
623 | { | |
624 | my @path = split(m#(?=/+)#, $dir); | |
625 | ||
626 | $path = ""; | |
627 | ||
628 | while(@path) | |
629 | { | |
630 | $path .= shift @path; | |
631 | ||
632 | $ftp->_MKD($path); | |
633 | ||
634 | $path = $ftp->_extract_path($path); | |
635 | } | |
636 | ||
637 | # If the creation of the last element was not sucessful, see if we | |
638 | # can cd to it, if so then return path | |
639 | ||
640 | unless($ftp->ok) | |
641 | { | |
642 | my($status,$message) = ($ftp->status,$ftp->message); | |
643 | my $pwd = $ftp->pwd; | |
686337f3 | 644 | |
406c51ee JH |
645 | if($pwd && $ftp->cwd($dir)) |
646 | { | |
647 | $path = $dir; | |
648 | $ftp->cwd($pwd); | |
649 | } | |
650 | else | |
651 | { | |
652 | undef $path; | |
653 | } | |
654 | $ftp->set_status($status,$message); | |
655 | } | |
656 | } | |
657 | ||
658 | $path; | |
659 | } | |
660 | ||
661 | sub delete | |
662 | { | |
663 | @_ == 2 || croak 'usage: $ftp->delete( FILENAME )'; | |
664 | ||
665 | $_[0]->_DELE($_[1]); | |
666 | } | |
667 | ||
668 | sub put { shift->_store_cmd("stor",@_) } | |
669 | sub put_unique { shift->_store_cmd("stou",@_) } | |
670 | sub append { shift->_store_cmd("appe",@_) } | |
671 | ||
672 | sub nlst { shift->_data_cmd("NLST",@_) } | |
673 | sub list { shift->_data_cmd("LIST",@_) } | |
674 | sub retr { shift->_data_cmd("RETR",@_) } | |
675 | sub stor { shift->_data_cmd("STOR",@_) } | |
676 | sub stou { shift->_data_cmd("STOU",@_) } | |
677 | sub appe { shift->_data_cmd("APPE",@_) } | |
678 | ||
679 | sub _store_cmd | |
680 | { | |
681 | my($ftp,$cmd,$local,$remote) = @_; | |
682 | my($loc,$sock,$len,$buf,$localfd); | |
683 | local *FD; | |
684 | ||
685 | $localfd = ref($local) || ref(\$local) eq "GLOB" | |
686 | ? fileno($local) | |
687 | : undef; | |
688 | ||
689 | unless(defined $remote) | |
690 | { | |
691 | croak 'Must specify remote filename with stream input' | |
692 | if defined $localfd; | |
693 | ||
694 | require File::Basename; | |
695 | $remote = File::Basename::basename($local); | |
696 | } | |
697 | ||
698 | croak("Bad remote filename '$remote'\n") | |
699 | if $remote =~ /[\r\n]/s; | |
700 | ||
701 | if(defined $localfd) | |
702 | { | |
703 | $loc = $local; | |
704 | } | |
705 | else | |
706 | { | |
707 | $loc = \*FD; | |
708 | ||
709 | unless(open($loc,"<$local")) | |
710 | { | |
711 | carp "Cannot open Local file $local: $!\n"; | |
712 | return undef; | |
713 | } | |
714 | } | |
715 | ||
716 | if($ftp->type eq 'I' && !binmode($loc)) | |
717 | { | |
718 | carp "Cannot binmode Local file $local: $!\n"; | |
719 | return undef; | |
720 | } | |
721 | ||
722 | delete ${*$ftp}{'net_ftp_port'}; | |
723 | delete ${*$ftp}{'net_ftp_pasv'}; | |
724 | ||
725 | $sock = $ftp->_data_cmd($cmd, $remote) or | |
726 | return undef; | |
727 | ||
728 | my $blksize = ${*$ftp}{'net_ftp_blksize'}; | |
729 | ||
730 | my($count,$hashh,$hashb,$ref) = (0); | |
731 | ||
732 | ($hashh,$hashb) = @$ref | |
733 | if($ref = ${*$ftp}{'net_ftp_hash'}); | |
734 | ||
735 | while(1) | |
736 | { | |
737 | last unless $len = sysread($loc,$buf="",$blksize); | |
738 | ||
686337f3 JH |
739 | if (trEBCDIC) |
740 | { | |
741 | $buf = $ftp->toascii($buf); | |
742 | $len = length($buf); | |
743 | } | |
744 | ||
406c51ee JH |
745 | if($hashh) { |
746 | $count += $len; | |
747 | print $hashh "#" x (int($count / $hashb)); | |
748 | $count %= $hashb; | |
749 | } | |
750 | ||
751 | my $wlen; | |
752 | unless(defined($wlen = $sock->write($buf,$len)) && $wlen == $len) | |
753 | { | |
754 | $sock->abort; | |
755 | close($loc) | |
756 | unless defined $localfd; | |
757 | print $hashh "\n" if $hashh; | |
758 | return undef; | |
759 | } | |
760 | } | |
761 | ||
762 | print $hashh "\n" if $hashh; | |
763 | ||
764 | close($loc) | |
765 | unless defined $localfd; | |
766 | ||
767 | $sock->close() or | |
768 | return undef; | |
769 | ||
686337f3 JH |
770 | if ('STOU' eq uc $cmd and $ftp->message =~ m/unique\ file\ name:(.*)\)|"(.*)"/) |
771 | { | |
772 | require File::Basename; | |
773 | $remote = File::Basename::basename($+) | |
774 | } | |
406c51ee JH |
775 | |
776 | return $remote; | |
777 | } | |
778 | ||
779 | sub port | |
780 | { | |
781 | @_ == 1 || @_ == 2 or croak 'usage: $ftp->port([PORT])'; | |
782 | ||
783 | my($ftp,$port) = @_; | |
784 | my $ok; | |
785 | ||
786 | delete ${*$ftp}{'net_ftp_intern_port'}; | |
787 | ||
788 | unless(defined $port) | |
789 | { | |
790 | # create a Listen socket at same address as the command socket | |
791 | ||
792 | ${*$ftp}{'net_ftp_listen'} ||= IO::Socket::INET->new(Listen => 5, | |
793 | Proto => 'tcp', | |
686337f3 JH |
794 | Timeout => $ftp->timeout, |
795 | LocalAddr => $ftp->sockhost, | |
406c51ee | 796 | ); |
686337f3 | 797 | |
406c51ee JH |
798 | my $listen = ${*$ftp}{'net_ftp_listen'}; |
799 | ||
686337f3 | 800 | my($myport, @myaddr) = ($listen->sockport, split(/\./,$listen->sockhost)); |
406c51ee JH |
801 | |
802 | $port = join(',', @myaddr, $myport >> 8, $myport & 0xff); | |
803 | ||
804 | ${*$ftp}{'net_ftp_intern_port'} = 1; | |
805 | } | |
806 | ||
807 | $ok = $ftp->_PORT($port); | |
808 | ||
809 | ${*$ftp}{'net_ftp_port'} = $port; | |
810 | ||
811 | $ok; | |
812 | } | |
813 | ||
814 | sub ls { shift->_list_cmd("NLST",@_); } | |
815 | sub dir { shift->_list_cmd("LIST",@_); } | |
816 | ||
817 | sub pasv | |
818 | { | |
819 | @_ == 1 or croak 'usage: $ftp->pasv()'; | |
820 | ||
821 | my $ftp = shift; | |
822 | ||
823 | delete ${*$ftp}{'net_ftp_intern_port'}; | |
824 | ||
825 | $ftp->_PASV && $ftp->message =~ /(\d+(,\d+)+)/ | |
826 | ? ${*$ftp}{'net_ftp_pasv'} = $1 | |
827 | : undef; | |
828 | } | |
829 | ||
830 | sub unique_name | |
831 | { | |
832 | my $ftp = shift; | |
833 | ${*$ftp}{'net_ftp_unique'} || undef; | |
834 | } | |
835 | ||
836 | sub supported { | |
837 | @_ == 2 or croak 'usage: $ftp->supported( CMD )'; | |
838 | my $ftp = shift; | |
839 | my $cmd = uc shift; | |
840 | my $hash = ${*$ftp}{'net_ftp_supported'} ||= {}; | |
841 | ||
842 | return $hash->{$cmd} | |
843 | if exists $hash->{$cmd}; | |
844 | ||
845 | return $hash->{$cmd} = 0 | |
846 | unless $ftp->_HELP($cmd); | |
847 | ||
848 | my $text = $ftp->message; | |
849 | if($text =~ /following\s+commands/i) { | |
850 | $text =~ s/^.*\n//; | |
851 | $text =~ s/\n/ /sog; | |
852 | while($text =~ /(\w+)([* ])/g) { | |
853 | $hash->{"\U$1"} = $2 eq " " ? 1 : 0; | |
854 | } | |
855 | } | |
856 | else { | |
857 | $hash->{$cmd} = $text !~ /unimplemented/i; | |
858 | } | |
859 | ||
860 | $hash->{$cmd} ||= 0; | |
861 | } | |
862 | ||
863 | ## | |
864 | ## Deprecated methods | |
865 | ## | |
866 | ||
867 | sub lsl | |
868 | { | |
869 | carp "Use of Net::FTP::lsl deprecated, use 'dir'" | |
870 | if $^W; | |
871 | goto &dir; | |
872 | } | |
873 | ||
874 | sub authorise | |
875 | { | |
876 | carp "Use of Net::FTP::authorise deprecated, use 'authorize'" | |
877 | if $^W; | |
878 | goto &authorize; | |
879 | } | |
880 | ||
881 | ||
882 | ## | |
883 | ## Private methods | |
884 | ## | |
885 | ||
886 | sub _extract_path | |
887 | { | |
888 | my($ftp, $path) = @_; | |
889 | ||
890 | # This tries to work both with and without the quote doubling | |
891 | # convention (RFC 959 requires it, but the first 3 servers I checked | |
892 | # didn't implement it). It will fail on a server which uses a quote in | |
893 | # the message which isn't a part of or surrounding the path. | |
894 | $ftp->ok && | |
895 | $ftp->message =~ /(?:^|\s)\"(.*)\"(?:$|\s)/ && | |
896 | ($path = $1) =~ s/\"\"/\"/g; | |
897 | ||
898 | $path; | |
899 | } | |
900 | ||
901 | ## | |
902 | ## Communication methods | |
903 | ## | |
904 | ||
905 | sub _dataconn | |
906 | { | |
907 | my $ftp = shift; | |
908 | my $data = undef; | |
909 | my $pkg = "Net::FTP::" . $ftp->type; | |
910 | ||
911 | eval "require " . $pkg; | |
912 | ||
913 | $pkg =~ s/ /_/g; | |
914 | ||
915 | delete ${*$ftp}{'net_ftp_dataconn'}; | |
916 | ||
917 | if(defined ${*$ftp}{'net_ftp_pasv'}) | |
918 | { | |
919 | my @port = split(/,/,${*$ftp}{'net_ftp_pasv'}); | |
920 | ||
921 | $data = $pkg->new(PeerAddr => join(".",@port[0..3]), | |
922 | PeerPort => $port[4] * 256 + $port[5], | |
923 | Proto => 'tcp' | |
924 | ); | |
925 | } | |
926 | elsif(defined ${*$ftp}{'net_ftp_listen'}) | |
927 | { | |
928 | $data = ${*$ftp}{'net_ftp_listen'}->accept($pkg); | |
929 | close(delete ${*$ftp}{'net_ftp_listen'}); | |
930 | } | |
931 | ||
932 | if($data) | |
933 | { | |
934 | ${*$data} = ""; | |
935 | $data->timeout($ftp->timeout); | |
936 | ${*$ftp}{'net_ftp_dataconn'} = $data; | |
937 | ${*$data}{'net_ftp_cmd'} = $ftp; | |
938 | ${*$data}{'net_ftp_blksize'} = ${*$ftp}{'net_ftp_blksize'}; | |
939 | } | |
940 | ||
941 | $data; | |
942 | } | |
943 | ||
944 | sub _list_cmd | |
945 | { | |
946 | my $ftp = shift; | |
947 | my $cmd = uc shift; | |
948 | ||
949 | delete ${*$ftp}{'net_ftp_port'}; | |
950 | delete ${*$ftp}{'net_ftp_pasv'}; | |
951 | ||
952 | my $data = $ftp->_data_cmd($cmd,@_); | |
953 | ||
954 | return | |
955 | unless(defined $data); | |
956 | ||
957 | require Net::FTP::A; | |
958 | bless $data, "Net::FTP::A"; # Force ASCII mode | |
959 | ||
960 | my $databuf = ''; | |
961 | my $buf = ''; | |
962 | my $blksize = ${*$ftp}{'net_ftp_blksize'}; | |
963 | ||
964 | while($data->read($databuf,$blksize)) { | |
965 | $buf .= $databuf; | |
966 | } | |
967 | ||
968 | my $list = [ split(/\n/,$buf) ]; | |
969 | ||
970 | $data->close(); | |
971 | ||
686337f3 JH |
972 | if (trEBCDIC) |
973 | { | |
974 | for (@$list) { $_ = $ftp->toebcdic($_) } | |
975 | } | |
976 | ||
406c51ee JH |
977 | wantarray ? @{$list} |
978 | : $list; | |
979 | } | |
980 | ||
981 | sub _data_cmd | |
982 | { | |
983 | my $ftp = shift; | |
984 | my $cmd = uc shift; | |
985 | my $ok = 1; | |
986 | my $where = delete ${*$ftp}{'net_ftp_rest'} || 0; | |
987 | my $arg; | |
988 | ||
989 | for $arg (@_) { | |
990 | croak("Bad argument '$arg'\n") | |
991 | if $arg =~ /[\r\n]/s; | |
992 | } | |
993 | ||
994 | if(${*$ftp}{'net_ftp_passive'} && | |
995 | !defined ${*$ftp}{'net_ftp_pasv'} && | |
996 | !defined ${*$ftp}{'net_ftp_port'}) | |
997 | { | |
998 | my $data = undef; | |
999 | ||
1000 | $ok = defined $ftp->pasv; | |
1001 | $ok = $ftp->_REST($where) | |
1002 | if $ok && $where; | |
1003 | ||
1004 | if($ok) | |
1005 | { | |
1006 | $ftp->command($cmd,@_); | |
1007 | $data = $ftp->_dataconn(); | |
1008 | $ok = CMD_INFO == $ftp->response(); | |
1009 | if($ok) | |
1010 | { | |
1011 | $data->reading | |
1012 | if $data && $cmd =~ /RETR|LIST|NLST/; | |
1013 | return $data | |
1014 | } | |
1015 | $data->_close | |
1016 | if $data; | |
1017 | } | |
1018 | return undef; | |
1019 | } | |
1020 | ||
1021 | $ok = $ftp->port | |
1022 | unless (defined ${*$ftp}{'net_ftp_port'} || | |
1023 | defined ${*$ftp}{'net_ftp_pasv'}); | |
1024 | ||
1025 | $ok = $ftp->_REST($where) | |
1026 | if $ok && $where; | |
1027 | ||
1028 | return undef | |
1029 | unless $ok; | |
1030 | ||
1031 | $ftp->command($cmd,@_); | |
1032 | ||
1033 | return 1 | |
1034 | if(defined ${*$ftp}{'net_ftp_pasv'}); | |
1035 | ||
1036 | $ok = CMD_INFO == $ftp->response(); | |
1037 | ||
1038 | return $ok | |
1039 | unless exists ${*$ftp}{'net_ftp_intern_port'}; | |
1040 | ||
1041 | if($ok) { | |
1042 | my $data = $ftp->_dataconn(); | |
1043 | ||
1044 | $data->reading | |
1045 | if $data && $cmd =~ /RETR|LIST|NLST/; | |
1046 | ||
1047 | return $data; | |
1048 | } | |
1049 | ||
686337f3 | 1050 | |
406c51ee | 1051 | close(delete ${*$ftp}{'net_ftp_listen'}); |
686337f3 | 1052 | |
406c51ee JH |
1053 | return undef; |
1054 | } | |
1055 | ||
1056 | ## | |
1057 | ## Over-ride methods (Net::Cmd) | |
1058 | ## | |
1059 | ||
1060 | sub debug_text { $_[2] =~ /^(pass|resp|acct)/i ? "$1 ....\n" : $_[2]; } | |
1061 | ||
1062 | sub command | |
1063 | { | |
1064 | my $ftp = shift; | |
1065 | ||
1066 | delete ${*$ftp}{'net_ftp_port'}; | |
1067 | $ftp->SUPER::command(@_); | |
1068 | } | |
1069 | ||
1070 | sub response | |
1071 | { | |
1072 | my $ftp = shift; | |
1073 | my $code = $ftp->SUPER::response(); | |
1074 | ||
1075 | delete ${*$ftp}{'net_ftp_pasv'} | |
1076 | if ($code != CMD_MORE && $code != CMD_INFO); | |
1077 | ||
1078 | $code; | |
1079 | } | |
1080 | ||
1081 | sub parse_response | |
1082 | { | |
1083 | return ($1, $2 eq "-") | |
1084 | if $_[1] =~ s/^(\d\d\d)(.?)//o; | |
1085 | ||
1086 | my $ftp = shift; | |
1087 | ||
1088 | # Darn MS FTP server is a load of CRAP !!!! | |
1089 | return () | |
1090 | unless ${*$ftp}{'net_cmd_code'} + 0; | |
1091 | ||
1092 | (${*$ftp}{'net_cmd_code'},1); | |
1093 | } | |
1094 | ||
1095 | ## | |
1096 | ## Allow 2 servers to talk directly | |
1097 | ## | |
1098 | ||
1099 | sub pasv_xfer { | |
1100 | my($sftp,$sfile,$dftp,$dfile,$unique) = @_; | |
1101 | ||
1102 | ($dfile = $sfile) =~ s#.*/## | |
1103 | unless(defined $dfile); | |
1104 | ||
1105 | my $port = $sftp->pasv or | |
1106 | return undef; | |
1107 | ||
1108 | $dftp->port($port) or | |
1109 | return undef; | |
1110 | ||
1111 | return undef | |
1112 | unless($unique ? $dftp->stou($dfile) : $dftp->stor($dfile)); | |
1113 | ||
1114 | unless($sftp->retr($sfile) && $sftp->response == CMD_INFO) { | |
1115 | $sftp->retr($sfile); | |
1116 | $dftp->abort; | |
1117 | $dftp->response(); | |
1118 | return undef; | |
1119 | } | |
1120 | ||
1121 | $dftp->pasv_wait($sftp); | |
1122 | } | |
1123 | ||
1124 | sub pasv_wait | |
1125 | { | |
1126 | @_ == 2 or croak 'usage: $ftp->pasv_wait(NON_PASV_FTP)'; | |
1127 | ||
1128 | my($ftp, $non_pasv) = @_; | |
1129 | my($file,$rin,$rout); | |
1130 | ||
1131 | vec($rin='',fileno($ftp),1) = 1; | |
1132 | select($rout=$rin, undef, undef, undef); | |
1133 | ||
1134 | $ftp->response(); | |
1135 | $non_pasv->response(); | |
1136 | ||
1137 | return undef | |
1138 | unless $ftp->ok() && $non_pasv->ok(); | |
1139 | ||
1140 | return $1 | |
1141 | if $ftp->message =~ /unique file name:\s*(\S*)\s*\)/; | |
1142 | ||
1143 | return $1 | |
1144 | if $non_pasv->message =~ /unique file name:\s*(\S*)\s*\)/; | |
1145 | ||
1146 | return 1; | |
1147 | } | |
1148 | ||
1149 | sub cmd { shift->command(@_)->response() } | |
1150 | ||
1151 | ######################################## | |
1152 | # | |
1153 | # RFC959 commands | |
1154 | # | |
1155 | ||
1156 | sub _ABOR { shift->command("ABOR")->response() == CMD_OK } | |
1157 | sub _CDUP { shift->command("CDUP")->response() == CMD_OK } | |
1158 | sub _NOOP { shift->command("NOOP")->response() == CMD_OK } | |
1159 | sub _PASV { shift->command("PASV")->response() == CMD_OK } | |
1160 | sub _QUIT { shift->command("QUIT")->response() == CMD_OK } | |
1161 | sub _DELE { shift->command("DELE",@_)->response() == CMD_OK } | |
1162 | sub _CWD { shift->command("CWD", @_)->response() == CMD_OK } | |
1163 | sub _PORT { shift->command("PORT",@_)->response() == CMD_OK } | |
1164 | sub _RMD { shift->command("RMD", @_)->response() == CMD_OK } | |
1165 | sub _MKD { shift->command("MKD", @_)->response() == CMD_OK } | |
1166 | sub _PWD { shift->command("PWD", @_)->response() == CMD_OK } | |
1167 | sub _TYPE { shift->command("TYPE",@_)->response() == CMD_OK } | |
1168 | sub _RNTO { shift->command("RNTO",@_)->response() == CMD_OK } | |
1169 | sub _RESP { shift->command("RESP",@_)->response() == CMD_OK } | |
1170 | sub _MDTM { shift->command("MDTM",@_)->response() == CMD_OK } | |
1171 | sub _SIZE { shift->command("SIZE",@_)->response() == CMD_OK } | |
1172 | sub _HELP { shift->command("HELP",@_)->response() == CMD_OK } | |
1173 | sub _STAT { shift->command("STAT",@_)->response() == CMD_OK } | |
1174 | sub _APPE { shift->command("APPE",@_)->response() == CMD_INFO } | |
1175 | sub _LIST { shift->command("LIST",@_)->response() == CMD_INFO } | |
1176 | sub _NLST { shift->command("NLST",@_)->response() == CMD_INFO } | |
1177 | sub _RETR { shift->command("RETR",@_)->response() == CMD_INFO } | |
1178 | sub _STOR { shift->command("STOR",@_)->response() == CMD_INFO } | |
1179 | sub _STOU { shift->command("STOU",@_)->response() == CMD_INFO } | |
1180 | sub _RNFR { shift->command("RNFR",@_)->response() == CMD_MORE } | |
1181 | sub _REST { shift->command("REST",@_)->response() == CMD_MORE } | |
1182 | sub _USER { shift->command("user",@_)->response() } # A certain brain dead firewall :-) | |
1183 | sub _PASS { shift->command("PASS",@_)->response() } | |
1184 | sub _ACCT { shift->command("ACCT",@_)->response() } | |
1185 | sub _AUTH { shift->command("AUTH",@_)->response() } | |
1186 | ||
1187 | sub _ALLO { shift->unsupported(@_) } | |
1188 | sub _SMNT { shift->unsupported(@_) } | |
1189 | sub _MODE { shift->unsupported(@_) } | |
1190 | sub _SYST { shift->unsupported(@_) } | |
1191 | sub _STRU { shift->unsupported(@_) } | |
1192 | sub _REIN { shift->unsupported(@_) } | |
1193 | ||
1194 | 1; | |
1195 | ||
1196 | __END__ | |
1197 | ||
1198 | =head1 NAME | |
1199 | ||
1200 | Net::FTP - FTP Client class | |
1201 | ||
1202 | =head1 SYNOPSIS | |
1203 | ||
1204 | use Net::FTP; | |
686337f3 | 1205 | |
406c51ee JH |
1206 | $ftp = Net::FTP->new("some.host.name", Debug => 0); |
1207 | $ftp->login("anonymous",'me@here.there'); | |
1208 | $ftp->cwd("/pub"); | |
1209 | $ftp->get("that.file"); | |
1210 | $ftp->quit; | |
1211 | ||
1212 | =head1 DESCRIPTION | |
1213 | ||
1214 | C<Net::FTP> is a class implementing a simple FTP client in Perl as | |
1215 | described in RFC959. It provides wrappers for a subset of the RFC959 | |
1216 | commands. | |
1217 | ||
1218 | =head1 OVERVIEW | |
1219 | ||
1220 | FTP stands for File Transfer Protocol. It is a way of transferring | |
1221 | files between networked machines. The protocol defines a client | |
1222 | (whose commands are provided by this module) and a server (not | |
1223 | implemented in this module). Communication is always initiated by the | |
1224 | client, and the server responds with a message and a status code (and | |
1225 | sometimes with data). | |
1226 | ||
1227 | The FTP protocol allows files to be sent to or fetched from the | |
1228 | server. Each transfer involves a B<local file> (on the client) and a | |
1229 | B<remote file> (on the server). In this module, the same file name | |
1230 | will be used for both local and remote if only one is specified. This | |
1231 | means that transferring remote file C</path/to/file> will try to put | |
1232 | that file in C</path/to/file> locally, unless you specify a local file | |
1233 | name. | |
1234 | ||
1235 | The protocol also defines several standard B<translations> which the | |
1236 | file can undergo during transfer. These are ASCII, EBCDIC, binary, | |
1237 | and byte. ASCII is the default type, and indicates that the sender of | |
1238 | files will translate the ends of lines to a standard representation | |
1239 | which the receiver will then translate back into their local | |
1240 | representation. EBCDIC indicates the file being transferred is in | |
1241 | EBCDIC format. Binary (also known as image) format sends the data as | |
1242 | a contiguous bit stream. Byte format transfers the data as bytes, the | |
1243 | values of which remain the same regardless of differences in byte size | |
1244 | between the two machines (in theory - in practice you should only use | |
1245 | this if you really know what you're doing). | |
1246 | ||
1247 | =head1 CONSTRUCTOR | |
1248 | ||
1249 | =over 4 | |
1250 | ||
1251 | =item new (HOST [,OPTIONS]) | |
1252 | ||
1253 | This is the constructor for a new Net::FTP object. C<HOST> is the | |
1254 | name of the remote host to which a FTP connection is required. | |
1255 | ||
1256 | C<OPTIONS> are passed in a hash like fashion, using key and value pairs. | |
1257 | Possible options are: | |
1258 | ||
1259 | B<Firewall> - The name of a machine which acts as a FTP firewall. This can be | |
1260 | overridden by an environment variable C<FTP_FIREWALL>. If specified, and the | |
1261 | given host cannot be directly connected to, then the | |
1262 | connection is made to the firewall machine and the string C<@hostname> is | |
1263 | appended to the login identifier. This kind of setup is also refered to | |
1264 | as a ftp proxy. | |
1265 | ||
1266 | B<BlockSize> - This is the block size that Net::FTP will use when doing | |
1267 | transfers. (defaults to 10240) | |
1268 | ||
1269 | B<Port> - The port number to connect to on the remote machine for the | |
1270 | FTP connection | |
1271 | ||
1272 | B<Timeout> - Set a timeout value (defaults to 120) | |
1273 | ||
1274 | B<Debug> - debug level (see the debug method in L<Net::Cmd>) | |
1275 | ||
1276 | B<Passive> - If set to a non-zero value then all data transfers will be done | |
1277 | using passive mode. This is not usually required except for some I<dumb> | |
1278 | servers, and some firewall configurations. This can also be set by the | |
1279 | environment variable C<FTP_PASSIVE>. | |
1280 | ||
a816fa74 MG |
1281 | B<Hash> - If given a reference to a file handle (e.g., C<\*STDERR>), |
1282 | print hash marks (#) on that filehandle every 1024 bytes. This | |
1283 | simply invokes the C<hash()> method for you, so that hash marks | |
1284 | are displayed for all transfers. You can, of course, call C<hash()> | |
1285 | explicitly whenever you'd like. | |
406c51ee JH |
1286 | |
1287 | If the constructor fails undef will be returned and an error message will | |
1288 | be in $@ | |
1289 | ||
1290 | =back | |
1291 | ||
1292 | =head1 METHODS | |
1293 | ||
1294 | Unless otherwise stated all methods return either a I<true> or I<false> | |
1295 | value, with I<true> meaning that the operation was a success. When a method | |
1296 | states that it returns a value, failure will be returned as I<undef> or an | |
1297 | empty list. | |
1298 | ||
1299 | =over 4 | |
1300 | ||
1301 | =item login ([LOGIN [,PASSWORD [, ACCOUNT] ] ]) | |
1302 | ||
1303 | Log into the remote FTP server with the given login information. If | |
1304 | no arguments are given then the C<Net::FTP> uses the C<Net::Netrc> | |
1305 | package to lookup the login information for the connected host. | |
1306 | If no information is found then a login of I<anonymous> is used. | |
1307 | If no password is given and the login is I<anonymous> then the users | |
1308 | Email address will be used for a password. | |
1309 | ||
1310 | If the connection is via a firewall then the C<authorize> method will | |
1311 | be called with no arguments. | |
1312 | ||
1313 | =item authorize ( [AUTH [, RESP]]) | |
1314 | ||
1315 | This is a protocol used by some firewall ftp proxies. It is used | |
1316 | to authorise the user to send data out. If both arguments are not specified | |
1317 | then C<authorize> uses C<Net::Netrc> to do a lookup. | |
1318 | ||
1319 | =item site (ARGS) | |
1320 | ||
1321 | Send a SITE command to the remote server and wait for a response. | |
1322 | ||
1323 | Returns most significant digit of the response code. | |
1324 | ||
1325 | =item type (TYPE [, ARGS]) | |
1326 | ||
1327 | This method will send the TYPE command to the remote FTP server | |
1328 | to change the type of data transfer. The return value is the previous | |
1329 | value. | |
1330 | ||
1331 | =item ascii ([ARGS]) binary([ARGS]) ebcdic([ARGS]) byte([ARGS]) | |
1332 | ||
1333 | Synonyms for C<type> with the first arguments set correctly | |
1334 | ||
1335 | B<NOTE> ebcdic and byte are not fully supported. | |
1336 | ||
1337 | =item rename ( OLDNAME, NEWNAME ) | |
1338 | ||
1339 | Rename a file on the remote FTP server from C<OLDNAME> to C<NEWNAME>. This | |
1340 | is done by sending the RNFR and RNTO commands. | |
1341 | ||
1342 | =item delete ( FILENAME ) | |
1343 | ||
1344 | Send a request to the server to delete C<FILENAME>. | |
1345 | ||
1346 | =item cwd ( [ DIR ] ) | |
1347 | ||
1348 | Attempt to change directory to the directory given in C<$dir>. If | |
1349 | C<$dir> is C<"..">, the FTP C<CDUP> command is used to attempt to | |
1350 | move up one directory. If no directory is given then an attempt is made | |
1351 | to change the directory to the root directory. | |
1352 | ||
1353 | =item cdup () | |
1354 | ||
1355 | Change directory to the parent of the current directory. | |
1356 | ||
1357 | =item pwd () | |
1358 | ||
1359 | Returns the full pathname of the current directory. | |
1360 | ||
686337f3 JH |
1361 | =item restart ( WHERE ) |
1362 | ||
1363 | Set the byte offset at which to begin the next data transfer. Net::FTP simply | |
1364 | records this value and uses it when during the next data transfer. For this | |
1365 | reason this method will not return an error, but setting it may cause | |
1366 | a subsequent data transfer to fail. | |
1367 | ||
406c51ee JH |
1368 | =item rmdir ( DIR ) |
1369 | ||
1370 | Remove the directory with the name C<DIR>. | |
1371 | ||
1372 | =item mkdir ( DIR [, RECURSE ]) | |
1373 | ||
1374 | Create a new directory with the name C<DIR>. If C<RECURSE> is I<true> then | |
1375 | C<mkdir> will attempt to create all the directories in the given path. | |
1376 | ||
1377 | Returns the full pathname to the new directory. | |
1378 | ||
1379 | =item ls ( [ DIR ] ) | |
1380 | ||
1381 | Get a directory listing of C<DIR>, or the current directory. | |
1382 | ||
1383 | In an array context, returns a list of lines returned from the server. In | |
1384 | a scalar context, returns a reference to a list. | |
1385 | ||
1386 | =item dir ( [ DIR ] ) | |
1387 | ||
1388 | Get a directory listing of C<DIR>, or the current directory in long format. | |
1389 | ||
1390 | In an array context, returns a list of lines returned from the server. In | |
1391 | a scalar context, returns a reference to a list. | |
1392 | ||
1393 | =item get ( REMOTE_FILE [, LOCAL_FILE [, WHERE]] ) | |
1394 | ||
1395 | Get C<REMOTE_FILE> from the server and store locally. C<LOCAL_FILE> may be | |
1396 | a filename or a filehandle. If not specified the the file will be stored in | |
1397 | the current directory with the same leafname as the remote file. | |
1398 | ||
1399 | If C<WHERE> is given then the first C<WHERE> bytes of the file will | |
1400 | not be transfered, and the remaining bytes will be appended to | |
1401 | the local file if it already exists. | |
1402 | ||
1403 | Returns C<LOCAL_FILE>, or the generated local file name if C<LOCAL_FILE> | |
686337f3 | 1404 | is not given. If an error was encountered undef is returned. |
406c51ee JH |
1405 | |
1406 | =item put ( LOCAL_FILE [, REMOTE_FILE ] ) | |
1407 | ||
1408 | Put a file on the remote server. C<LOCAL_FILE> may be a name or a filehandle. | |
1409 | If C<LOCAL_FILE> is a filehandle then C<REMOTE_FILE> must be specified. If | |
1410 | C<REMOTE_FILE> is not specified then the file will be stored in the current | |
1411 | directory with the same leafname as C<LOCAL_FILE>. | |
1412 | ||
1413 | Returns C<REMOTE_FILE>, or the generated remote filename if C<REMOTE_FILE> | |
1414 | is not given. | |
1415 | ||
1416 | B<NOTE>: If for some reason the transfer does not complete and an error is | |
1417 | returned then the contents that had been transfered will not be remove | |
1418 | automatically. | |
1419 | ||
1420 | =item put_unique ( LOCAL_FILE [, REMOTE_FILE ] ) | |
1421 | ||
1422 | Same as put but uses the C<STOU> command. | |
1423 | ||
1424 | Returns the name of the file on the server. | |
1425 | ||
1426 | =item append ( LOCAL_FILE [, REMOTE_FILE ] ) | |
1427 | ||
1428 | Same as put but appends to the file on the remote server. | |
1429 | ||
1430 | Returns C<REMOTE_FILE>, or the generated remote filename if C<REMOTE_FILE> | |
1431 | is not given. | |
1432 | ||
1433 | =item unique_name () | |
1434 | ||
1435 | Returns the name of the last file stored on the server using the | |
1436 | C<STOU> command. | |
1437 | ||
1438 | =item mdtm ( FILE ) | |
1439 | ||
1440 | Returns the I<modification time> of the given file | |
1441 | ||
1442 | =item size ( FILE ) | |
1443 | ||
1444 | Returns the size in bytes for the given file as stored on the remote server. | |
1445 | ||
1446 | B<NOTE>: The size reported is the size of the stored file on the remote server. | |
1447 | If the file is subsequently transfered from the server in ASCII mode | |
1448 | and the remote server and local machine have different ideas about | |
1449 | "End Of Line" then the size of file on the local machine after transfer | |
1450 | may be different. | |
1451 | ||
1452 | =item supported ( CMD ) | |
1453 | ||
1454 | Returns TRUE if the remote server supports the given command. | |
1455 | ||
1456 | =item hash ( [FILEHANDLE_GLOB_REF],[ BYTES_PER_HASH_MARK] ) | |
1457 | ||
1458 | Called without parameters, or with the first argument false, hash marks | |
1459 | are suppressed. If the first argument is true but not a reference to a | |
1460 | file handle glob, then \*STDERR is used. The second argument is the number | |
1461 | of bytes per hash mark printed, and defaults to 1024. In all cases the | |
1462 | return value is a reference to an array of two: the filehandle glob reference | |
1463 | and the bytes per hash mark. | |
1464 | ||
1465 | =back | |
1466 | ||
1467 | The following methods can return different results depending on | |
1468 | how they are called. If the user explicitly calls either | |
1469 | of the C<pasv> or C<port> methods then these methods will | |
1470 | return a I<true> or I<false> value. If the user does not | |
1471 | call either of these methods then the result will be a | |
1472 | reference to a C<Net::FTP::dataconn> based object. | |
1473 | ||
1474 | =over 4 | |
1475 | ||
1476 | =item nlst ( [ DIR ] ) | |
1477 | ||
1478 | Send a C<NLST> command to the server, with an optional parameter. | |
1479 | ||
1480 | =item list ( [ DIR ] ) | |
1481 | ||
1482 | Same as C<nlst> but using the C<LIST> command | |
1483 | ||
1484 | =item retr ( FILE ) | |
1485 | ||
1486 | Begin the retrieval of a file called C<FILE> from the remote server. | |
1487 | ||
1488 | =item stor ( FILE ) | |
1489 | ||
1490 | Tell the server that you wish to store a file. C<FILE> is the | |
1491 | name of the new file that should be created. | |
1492 | ||
1493 | =item stou ( FILE ) | |
1494 | ||
1495 | Same as C<stor> but using the C<STOU> command. The name of the unique | |
1496 | file which was created on the server will be available via the C<unique_name> | |
1497 | method after the data connection has been closed. | |
1498 | ||
1499 | =item appe ( FILE ) | |
1500 | ||
1501 | Tell the server that we want to append some data to the end of a file | |
1502 | called C<FILE>. If this file does not exist then create it. | |
1503 | ||
1504 | =back | |
1505 | ||
1506 | If for some reason you want to have complete control over the data connection, | |
1507 | this includes generating it and calling the C<response> method when required, | |
1508 | then the user can use these methods to do so. | |
1509 | ||
1510 | However calling these methods only affects the use of the methods above that | |
1511 | can return a data connection. They have no effect on methods C<get>, C<put>, | |
1512 | C<put_unique> and those that do not require data connections. | |
1513 | ||
1514 | =over 4 | |
1515 | ||
1516 | =item port ( [ PORT ] ) | |
1517 | ||
1518 | Send a C<PORT> command to the server. If C<PORT> is specified then it is sent | |
1519 | to the server. If not the a listen socket is created and the correct information | |
1520 | sent to the server. | |
1521 | ||
1522 | =item pasv () | |
1523 | ||
1524 | Tell the server to go into passive mode. Returns the text that represents the | |
1525 | port on which the server is listening, this text is in a suitable form to | |
1526 | sent to another ftp server using the C<port> method. | |
1527 | ||
1528 | =back | |
1529 | ||
1530 | The following methods can be used to transfer files between two remote | |
1531 | servers, providing that these two servers can connect directly to each other. | |
1532 | ||
1533 | =over 4 | |
1534 | ||
1535 | =item pasv_xfer ( SRC_FILE, DEST_SERVER [, DEST_FILE ] ) | |
1536 | ||
1537 | This method will do a file transfer between two remote ftp servers. If | |
1538 | C<DEST_FILE> is omitted then the leaf name of C<SRC_FILE> will be used. | |
1539 | ||
1540 | =item pasv_xfer_unique ( SRC_FILE, DEST_SERVER [, DEST_FILE ] ) | |
1541 | ||
1542 | Like C<pasv_xfer> but the file is stored on the remote server using | |
1543 | the STOU command. | |
1544 | ||
1545 | =item pasv_wait ( NON_PASV_SERVER ) | |
1546 | ||
1547 | This method can be used to wait for a transfer to complete between a passive | |
1548 | server and a non-passive server. The method should be called on the passive | |
1549 | server with the C<Net::FTP> object for the non-passive server passed as an | |
1550 | argument. | |
1551 | ||
1552 | =item abort () | |
1553 | ||
1554 | Abort the current data transfer. | |
1555 | ||
1556 | =item quit () | |
1557 | ||
1558 | Send the QUIT command to the remote FTP server and close the socket connection. | |
1559 | ||
1560 | =back | |
1561 | ||
1562 | =head2 Methods for the adventurous | |
1563 | ||
1564 | C<Net::FTP> inherits from C<Net::Cmd> so methods defined in C<Net::Cmd> may | |
1565 | be used to send commands to the remote FTP server. | |
1566 | ||
1567 | =over 4 | |
1568 | ||
1569 | =item quot (CMD [,ARGS]) | |
1570 | ||
1571 | Send a command, that Net::FTP does not directly support, to the remote | |
1572 | server and wait for a response. | |
1573 | ||
1574 | Returns most significant digit of the response code. | |
1575 | ||
1576 | B<WARNING> This call should only be used on commands that do not require | |
1577 | data connections. Misuse of this method can hang the connection. | |
1578 | ||
1579 | =back | |
1580 | ||
1581 | =head1 THE dataconn CLASS | |
1582 | ||
1583 | Some of the methods defined in C<Net::FTP> return an object which will | |
1584 | be derived from this class.The dataconn class itself is derived from | |
1585 | the C<IO::Socket::INET> class, so any normal IO operations can be performed. | |
1586 | However the following methods are defined in the dataconn class and IO should | |
1587 | be performed using these. | |
1588 | ||
1589 | =over 4 | |
1590 | ||
1591 | =item read ( BUFFER, SIZE [, TIMEOUT ] ) | |
1592 | ||
1593 | Read C<SIZE> bytes of data from the server and place it into C<BUFFER>, also | |
1594 | performing any <CRLF> translation necessary. C<TIMEOUT> is optional, if not | |
1595 | given the the timeout value from the command connection will be used. | |
1596 | ||
1597 | Returns the number of bytes read before any <CRLF> translation. | |
1598 | ||
1599 | =item write ( BUFFER, SIZE [, TIMEOUT ] ) | |
1600 | ||
1601 | Write C<SIZE> bytes of data from C<BUFFER> to the server, also | |
1602 | performing any <CRLF> translation necessary. C<TIMEOUT> is optional, if not | |
1603 | given the the timeout value from the command connection will be used. | |
1604 | ||
1605 | Returns the number of bytes written before any <CRLF> translation. | |
1606 | ||
686337f3 JH |
1607 | =item bytes_read () |
1608 | ||
1609 | Returns the number of bytes read so far. | |
1610 | ||
406c51ee JH |
1611 | =item abort () |
1612 | ||
1613 | Abort the current data transfer. | |
1614 | ||
1615 | =item close () | |
1616 | ||
1617 | Close the data connection and get a response from the FTP server. Returns | |
1618 | I<true> if the connection was closed successfully and the first digit of | |
1619 | the response from the server was a '2'. | |
1620 | ||
1621 | =back | |
1622 | ||
1623 | =head1 UNIMPLEMENTED | |
1624 | ||
1625 | The following RFC959 commands have not been implemented: | |
1626 | ||
1627 | =over 4 | |
1628 | ||
1629 | =item B<ALLO> | |
1630 | ||
1631 | Allocates storage for the file to be transferred. | |
1632 | ||
1633 | =item B<SMNT> | |
1634 | ||
1635 | Mount a different file system structure without changing login or | |
1636 | accounting information. | |
1637 | ||
1638 | =item B<HELP> | |
1639 | ||
1640 | Ask the server for "helpful information" (that's what the RFC says) on | |
1641 | the commands it accepts. | |
1642 | ||
1643 | =item B<MODE> | |
1644 | ||
1645 | Specifies transfer mode (stream, block or compressed) for file to be | |
1646 | transferred. | |
1647 | ||
1648 | =item B<SYST> | |
1649 | ||
1650 | Request remote server system identification. | |
1651 | ||
1652 | =item B<STAT> | |
1653 | ||
1654 | Request remote server status. | |
1655 | ||
1656 | =item B<STRU> | |
1657 | ||
1658 | Specifies file structure for file to be transferred. | |
1659 | ||
1660 | =item B<REIN> | |
1661 | ||
1662 | Reinitialize the connection, flushing all I/O and account information. | |
1663 | ||
1664 | =back | |
1665 | ||
1666 | =head1 REPORTING BUGS | |
1667 | ||
1668 | When reporting bugs/problems please include as much information as possible. | |
1669 | It may be difficult for me to reproduce the problem as almost every setup | |
1670 | is different. | |
1671 | ||
1672 | A small script which yields the problem will probably be of help. It would | |
1673 | also be useful if this script was run with the extra options C<Debug => 1> | |
1674 | passed to the constructor, and the output sent with the bug report. If you | |
1675 | cannot include a small script then please include a Debug trace from a | |
1676 | run of your program which does yield the problem. | |
1677 | ||
1678 | =head1 AUTHOR | |
1679 | ||
1680 | Graham Barr <gbarr@pobox.com> | |
1681 | ||
1682 | =head1 SEE ALSO | |
1683 | ||
1684 | L<Net::Netrc> | |
1685 | L<Net::Cmd> | |
1686 | ||
1687 | ftp(1), ftpd(8), RFC 959 | |
1688 | http://www.cis.ohio-state.edu/htbin/rfc/rfc959.html | |
1689 | ||
686337f3 JH |
1690 | =head1 USE EXAMPLES |
1691 | ||
1692 | For an example of the use of Net::FTP see | |
1693 | ||
1694 | =over 4 | |
1695 | ||
1696 | =item http://www.csh.rit.edu/~adam/Progs/autoftp-2.0.tar.gz | |
1697 | ||
1698 | C<autoftp> is a program that can retrieve, send, or list files via | |
1699 | the FTP protocol in a non-interactive manner. | |
1700 | ||
1701 | =back | |
1702 | ||
406c51ee JH |
1703 | =head1 CREDITS |
1704 | ||
1705 | Henry Gabryjelski <henryg@WPI.EDU> - for the suggestion of creating directories | |
1706 | recursively. | |
1707 | ||
1708 | Nathan Torkington <gnat@frii.com> - for some input on the documentation. | |
1709 | ||
1710 | Roderick Schertler <roderick@gate.net> - for various inputs | |
1711 | ||
1712 | =head1 COPYRIGHT | |
1713 | ||
1714 | Copyright (c) 1995-1998 Graham Barr. All rights reserved. | |
1715 | This program is free software; you can redistribute it and/or modify it | |
1716 | under the same terms as Perl itself. | |
1717 | ||
686337f3 JH |
1718 | =for html <hr> |
1719 | ||
1720 | I<$Id: //depot/libnet/Net/FTP.pm#57 $> | |
1721 | ||
406c51ee | 1722 | =cut |