Commit | Line | Data |
---|---|---|
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 | ||
24 | $VERSION = "2.56"; # $Id:$ | |
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 | ||
39 | 1; | |
40 | # Having problems with AutoLoader | |
41 | #__END__ | |
42 | ||
43 | sub new | |
44 | { | |
45 | my $pkg = shift; | |
46 | my $peer = shift; | |
47 | my %arg = @_; | |
48 | ||
49 | my $host = $peer; | |
50 | my $fire = undef; | |
51 | ||
52 | if(exists($arg{Firewall}) || Net::Config->requires_firewall($peer)) | |
53 | { | |
54 | $fire = $arg{Firewall} | |
55 | || $ENV{FTP_FIREWALL} | |
56 | || $NetConfig{ftp_firewall} | |
57 | || undef; | |
58 | ||
59 | if(defined $fire) | |
60 | { | |
61 | $peer = $fire; | |
62 | delete $arg{Port}; | |
63 | } | |
64 | } | |
65 | ||
66 | my $ftp = $pkg->SUPER::new(PeerAddr => $peer, | |
67 | PeerPort => $arg{Port} || 'ftp(21)', | |
68 | Proto => 'tcp', | |
69 | Timeout => defined $arg{Timeout} | |
70 | ? $arg{Timeout} | |
71 | : 120 | |
72 | ) or return undef; | |
73 | ||
74 | ${*$ftp}{'net_ftp_host'} = $host; # Remote hostname | |
75 | ${*$ftp}{'net_ftp_type'} = 'A'; # ASCII/binary/etc mode | |
76 | ${*$ftp}{'net_ftp_blksize'} = abs($arg{'BlockSize'} || 10240); | |
77 | ||
78 | ${*$ftp}{'net_ftp_firewall'} = $fire | |
79 | if(defined $fire); | |
80 | ||
81 | ${*$ftp}{'net_ftp_passive'} = int | |
82 | exists $arg{Passive} | |
83 | ? $arg{Passive} | |
84 | : exists $ENV{FTP_PASSIVE} | |
85 | ? $ENV{FTP_PASSIVE} | |
86 | : defined $fire | |
87 | ? $NetConfig{ftp_ext_passive} | |
88 | : $NetConfig{ftp_int_passive}; # Whew! :-) | |
89 | ||
90 | $ftp->hash(exists $arg{Hash} ? $arg{Hash} : 0, 1024); | |
91 | ||
92 | $ftp->autoflush(1); | |
93 | ||
94 | $ftp->debug(exists $arg{Debug} ? $arg{Debug} : undef); | |
95 | ||
96 | unless ($ftp->response() == CMD_OK) | |
97 | { | |
98 | $ftp->close(); | |
99 | $@ = $ftp->message; | |
100 | undef $ftp; | |
101 | } | |
102 | ||
103 | $ftp; | |
104 | } | |
105 | ||
106 | ## | |
107 | ## User interface methods | |
108 | ## | |
109 | ||
110 | sub hash { | |
111 | my $ftp = shift; # self | |
112 | my $prev = ${*$ftp}{'net_ftp_hash'} || [\*STDERR, 0]; | |
113 | ||
114 | unless(@_) { | |
115 | return $prev; | |
116 | } | |
117 | my($h,$b) = @_; | |
118 | if(@_ == 1) { | |
119 | unless($h) { | |
120 | delete ${*$ftp}{'net_ftp_hash'}; | |
121 | return $prev; | |
122 | } | |
123 | elsif(ref($h)) { | |
124 | $b = 1024; | |
125 | } | |
126 | else { | |
127 | ($h,$b) = (\*STDERR,$h); | |
128 | } | |
129 | } | |
130 | select((select($h), $|=1)[0]); | |
131 | $b = 512 if $b < 512; | |
132 | ${*$ftp}{'net_ftp_hash'} = [$h, $b]; | |
133 | $prev; | |
134 | } | |
135 | ||
136 | sub quit | |
137 | { | |
138 | my $ftp = shift; | |
139 | ||
140 | $ftp->_QUIT; | |
141 | $ftp->close; | |
142 | } | |
143 | ||
144 | sub DESTROY | |
145 | { | |
146 | my $ftp = shift; | |
147 | defined(fileno($ftp)) && $ftp->quit | |
148 | } | |
149 | ||
150 | sub ascii { shift->type('A',@_); } | |
151 | sub binary { shift->type('I',@_); } | |
152 | ||
153 | sub ebcdic | |
154 | { | |
155 | carp "TYPE E is unsupported, shall default to I"; | |
156 | shift->type('E',@_); | |
157 | } | |
158 | ||
159 | sub byte | |
160 | { | |
161 | carp "TYPE L is unsupported, shall default to I"; | |
162 | shift->type('L',@_); | |
163 | } | |
164 | ||
165 | # Allow the user to send a command directly, BE CAREFUL !! | |
166 | ||
167 | sub quot | |
168 | { | |
169 | my $ftp = shift; | |
170 | my $cmd = shift; | |
171 | ||
172 | $ftp->command( uc $cmd, @_); | |
173 | $ftp->response(); | |
174 | } | |
175 | ||
176 | sub site | |
177 | { | |
178 | my $ftp = shift; | |
179 | ||
180 | $ftp->command("SITE", @_); | |
181 | $ftp->response(); | |
182 | } | |
183 | ||
184 | sub mdtm | |
185 | { | |
186 | my $ftp = shift; | |
187 | my $file = shift; | |
188 | ||
189 | # Server Y2K bug workaround | |
190 | # | |
191 | # sigh; some idiotic FTP servers use ("19%d",tm.tm_year) instead of | |
192 | # ("%d",tm.tm_year+1900). This results in an extra digit in the | |
193 | # string returned. To account for this we allow an optional extra | |
194 | # digit in the year. Then if the first two digits are 19 we use the | |
195 | # remainder, otherwise we subtract 1900 from the whole year. | |
196 | ||
197 | $ftp->_MDTM($file) && $ftp->message =~ /((\d\d)(\d\d\d?))(\d\d)(\d\d)(\d\d)(\d\d)(\d\d)/ | |
198 | ? timegm($8,$7,$6,$5,$4-1,$2 eq '19' ? $3 : ($1-1900)) | |
199 | : undef; | |
200 | } | |
201 | ||
202 | sub size { | |
203 | my $ftp = shift; | |
204 | my $file = shift; | |
205 | my $io; | |
206 | if($ftp->supported("SIZE")) { | |
207 | return $ftp->_SIZE($file) | |
208 | ? ($ftp->message =~ /(\d+)/)[0] | |
209 | : undef; | |
210 | } | |
211 | elsif($ftp->supported("STAT")) { | |
212 | my @msg; | |
213 | return undef | |
214 | unless $ftp->_STAT($file) && (@msg = $ftp->message) == 3; | |
215 | my $line; | |
216 | foreach $line (@msg) { | |
217 | return (split(/\s+/,$line))[4] | |
218 | if $line =~ /^[-rw]{10}/ | |
219 | } | |
220 | } | |
221 | else { | |
222 | my @files = $ftp->dir($file); | |
223 | if(@files) { | |
224 | return (split(/\s+/,$1))[4] | |
225 | if $files[0] =~ /^([-rw]{10}.*)$/; | |
226 | } | |
227 | } | |
228 | undef; | |
229 | } | |
230 | ||
231 | sub login { | |
232 | my($ftp,$user,$pass,$acct) = @_; | |
233 | my($ok,$ruser,$fwtype); | |
234 | ||
235 | unless (defined $user) { | |
236 | require Net::Netrc; | |
237 | ||
238 | my $rc = Net::Netrc->lookup(${*$ftp}{'net_ftp_host'}); | |
239 | ||
240 | ($user,$pass,$acct) = $rc->lpa() | |
241 | if ($rc); | |
242 | } | |
243 | ||
244 | $user ||= "anonymous"; | |
245 | $ruser = $user; | |
246 | ||
247 | $fwtype = $NetConfig{'ftp_firewall_type'} || 0; | |
248 | ||
249 | if ($fwtype && defined ${*$ftp}{'net_ftp_firewall'}) { | |
250 | if ($fwtype == 1 || $fwtype == 7) { | |
251 | $user .= '@' . ${*$ftp}{'net_ftp_host'}; | |
252 | } | |
253 | else { | |
254 | require Net::Netrc; | |
255 | ||
256 | my $rc = Net::Netrc->lookup(${*$ftp}{'net_ftp_firewall'}); | |
257 | ||
258 | my($fwuser,$fwpass,$fwacct) = $rc ? $rc->lpa() : (); | |
259 | ||
260 | if ($fwtype == 5) { | |
261 | $user = join('@',$user,$fwuser,${*$ftp}{'net_ftp_host'}); | |
262 | $pass = $pass . '@' . $fwpass; | |
263 | } | |
264 | else { | |
265 | if ($fwtype == 2) { | |
266 | $user .= '@' . ${*$ftp}{'net_ftp_host'}; | |
267 | } | |
268 | elsif ($fwtype == 6) { | |
269 | $fwuser .= '@' . ${*$ftp}{'net_ftp_host'}; | |
270 | } | |
271 | ||
272 | $ok = $ftp->_USER($fwuser); | |
273 | ||
274 | return 0 unless $ok == CMD_OK || $ok == CMD_MORE; | |
275 | ||
276 | $ok = $ftp->_PASS($fwpass || ""); | |
277 | ||
278 | return 0 unless $ok == CMD_OK || $ok == CMD_MORE; | |
279 | ||
280 | $ok = $ftp->_ACCT($fwacct) | |
281 | if defined($fwacct); | |
282 | ||
283 | if ($fwtype == 3) { | |
284 | $ok = $ftp->command("SITE",${*$ftp}{'net_ftp_host'})->response; | |
285 | } | |
286 | elsif ($fwtype == 4) { | |
287 | $ok = $ftp->command("OPEN",${*$ftp}{'net_ftp_host'})->response; | |
288 | } | |
289 | ||
290 | return 0 unless $ok == CMD_OK || $ok == CMD_MORE; | |
291 | } | |
292 | } | |
293 | } | |
294 | ||
295 | $ok = $ftp->_USER($user); | |
296 | ||
297 | # Some dumb firewalls don't prefix the connection messages | |
298 | $ok = $ftp->response() | |
299 | if ($ok == CMD_OK && $ftp->code == 220 && $user =~ /\@/); | |
300 | ||
301 | if ($ok == CMD_MORE) { | |
302 | unless(defined $pass) { | |
303 | require Net::Netrc; | |
304 | ||
305 | my $rc = Net::Netrc->lookup(${*$ftp}{'net_ftp_host'}, $ruser); | |
306 | ||
307 | ($ruser,$pass,$acct) = $rc->lpa() | |
308 | if ($rc); | |
309 | ||
310 | $pass = "-" . (eval { (getpwuid($>))[0] } || $ENV{NAME} ) . '@' | |
311 | if (!defined $pass && (!defined($ruser) || $ruser =~ /^anonymous/o)); | |
312 | } | |
313 | ||
314 | $ok = $ftp->_PASS($pass || ""); | |
315 | } | |
316 | ||
317 | $ok = $ftp->_ACCT($acct) | |
318 | if (defined($acct) && ($ok == CMD_MORE || $ok == CMD_OK)); | |
319 | ||
320 | if ($fwtype == 7 && $ok == CMD_OK && defined ${*$ftp}{'net_ftp_firewall'}) { | |
321 | my($f,$auth,$resp) = _auth_id($ftp); | |
322 | $ftp->authorize($auth,$resp) if defined($resp); | |
323 | } | |
324 | ||
325 | $ok == CMD_OK; | |
326 | } | |
327 | ||
328 | sub account | |
329 | { | |
330 | @_ == 2 or croak 'usage: $ftp->account( ACCT )'; | |
331 | my $ftp = shift; | |
332 | my $acct = shift; | |
333 | $ftp->_ACCT($acct) == CMD_OK; | |
334 | } | |
335 | ||
336 | sub _auth_id { | |
337 | my($ftp,$auth,$resp) = @_; | |
338 | ||
339 | unless(defined $resp) | |
340 | { | |
341 | require Net::Netrc; | |
342 | ||
343 | $auth ||= eval { (getpwuid($>))[0] } || $ENV{NAME}; | |
344 | ||
345 | my $rc = Net::Netrc->lookup(${*$ftp}{'net_ftp_firewall'}, $auth) | |
346 | || Net::Netrc->lookup(${*$ftp}{'net_ftp_firewall'}); | |
347 | ||
348 | ($auth,$resp) = $rc->lpa() | |
349 | if ($rc); | |
350 | } | |
351 | ($ftp,$auth,$resp); | |
352 | } | |
353 | ||
354 | sub authorize | |
355 | { | |
356 | @_ >= 1 || @_ <= 3 or croak 'usage: $ftp->authorize( [AUTH [, RESP]])'; | |
357 | ||
358 | my($ftp,$auth,$resp) = &_auth_id; | |
359 | ||
360 | my $ok = $ftp->_AUTH($auth || ""); | |
361 | ||
362 | $ok = $ftp->_RESP($resp || "") | |
363 | if ($ok == CMD_MORE); | |
364 | ||
365 | $ok == CMD_OK; | |
366 | } | |
367 | ||
368 | sub rename | |
369 | { | |
370 | @_ == 3 or croak 'usage: $ftp->rename(FROM, TO)'; | |
371 | ||
372 | my($ftp,$from,$to) = @_; | |
373 | ||
374 | $ftp->_RNFR($from) | |
375 | && $ftp->_RNTO($to); | |
376 | } | |
377 | ||
378 | sub type | |
379 | { | |
380 | my $ftp = shift; | |
381 | my $type = shift; | |
382 | my $oldval = ${*$ftp}{'net_ftp_type'}; | |
383 | ||
384 | return $oldval | |
385 | unless (defined $type); | |
386 | ||
387 | return undef | |
388 | unless ($ftp->_TYPE($type,@_)); | |
389 | ||
390 | ${*$ftp}{'net_ftp_type'} = join(" ",$type,@_); | |
391 | ||
392 | $oldval; | |
393 | } | |
394 | ||
395 | sub abort | |
396 | { | |
397 | my $ftp = shift; | |
398 | ||
399 | send($ftp,pack("CCC", $TELNET_IAC, $TELNET_IP, $TELNET_IAC),MSG_OOB); | |
400 | ||
401 | $ftp->command(pack("C",$TELNET_DM) . "ABOR"); | |
402 | ||
403 | ${*$ftp}{'net_ftp_dataconn'}->close() | |
404 | if defined ${*$ftp}{'net_ftp_dataconn'}; | |
405 | ||
406 | $ftp->response(); | |
407 | ||
408 | $ftp->status == CMD_OK; | |
409 | } | |
410 | ||
411 | sub get | |
412 | { | |
413 | my($ftp,$remote,$local,$where) = @_; | |
414 | ||
415 | my($loc,$len,$buf,$resp,$localfd,$data); | |
416 | local *FD; | |
417 | ||
418 | $localfd = ref($local) || ref(\$local) eq "GLOB" | |
419 | ? fileno($local) | |
420 | : undef; | |
421 | ||
422 | ($local = $remote) =~ s#^.*/## | |
423 | unless(defined $local); | |
424 | ||
425 | croak("Bad remote filename '$remote'\n") | |
426 | if $remote =~ /[\r\n]/s; | |
427 | ||
428 | ${*$ftp}{'net_ftp_rest'} = $where | |
429 | if ($where); | |
430 | ||
431 | delete ${*$ftp}{'net_ftp_port'}; | |
432 | delete ${*$ftp}{'net_ftp_pasv'}; | |
433 | ||
434 | $data = $ftp->retr($remote) or | |
435 | return undef; | |
436 | ||
437 | if(defined $localfd) | |
438 | { | |
439 | $loc = $local; | |
440 | } | |
441 | else | |
442 | { | |
443 | $loc = \*FD; | |
444 | ||
445 | unless(($where) ? open($loc,">>$local") : open($loc,">$local")) | |
446 | { | |
447 | carp "Cannot open Local file $local: $!\n"; | |
448 | $data->abort; | |
449 | return undef; | |
450 | } | |
451 | } | |
452 | ||
453 | if($ftp->type eq 'I' && !binmode($loc)) | |
454 | { | |
455 | carp "Cannot binmode Local file $local: $!\n"; | |
456 | $data->abort; | |
457 | close($loc) unless $localfd; | |
458 | return undef; | |
459 | } | |
460 | ||
461 | $buf = ''; | |
462 | my($count,$hashh,$hashb,$ref) = (0); | |
463 | ||
464 | ($hashh,$hashb) = @$ref | |
465 | if($ref = ${*$ftp}{'net_ftp_hash'}); | |
466 | ||
467 | my $blksize = ${*$ftp}{'net_ftp_blksize'}; | |
468 | ||
469 | while(1) | |
470 | { | |
471 | last unless $len = $data->read($buf,$blksize); | |
472 | if($hashh) { | |
473 | $count += $len; | |
474 | print $hashh "#" x (int($count / $hashb)); | |
475 | $count %= $hashb; | |
476 | } | |
477 | my $written = syswrite($loc,$buf,$len); | |
478 | unless(defined($written) && $written == $len) | |
479 | { | |
480 | carp "Cannot write to Local file $local: $!\n"; | |
481 | $data->abort; | |
482 | close($loc) | |
483 | unless defined $localfd; | |
484 | return undef; | |
485 | } | |
486 | } | |
487 | ||
488 | print $hashh "\n" if $hashh; | |
489 | ||
490 | close($loc) | |
491 | unless defined $localfd; | |
492 | ||
493 | $data->close(); # implied $ftp->response | |
494 | ||
495 | return $local; | |
496 | } | |
497 | ||
498 | sub cwd | |
499 | { | |
500 | @_ == 1 || @_ == 2 or croak 'usage: $ftp->cwd( [ DIR ] )'; | |
501 | ||
502 | my($ftp,$dir) = @_; | |
503 | ||
504 | $dir = "/" unless defined($dir) && $dir =~ /\S/; | |
505 | ||
506 | $dir eq ".." | |
507 | ? $ftp->_CDUP() | |
508 | : $ftp->_CWD($dir); | |
509 | } | |
510 | ||
511 | sub cdup | |
512 | { | |
513 | @_ == 1 or croak 'usage: $ftp->cdup()'; | |
514 | $_[0]->_CDUP; | |
515 | } | |
516 | ||
517 | sub pwd | |
518 | { | |
519 | @_ == 1 || croak 'usage: $ftp->pwd()'; | |
520 | my $ftp = shift; | |
521 | ||
522 | $ftp->_PWD(); | |
523 | $ftp->_extract_path; | |
524 | } | |
525 | ||
526 | # rmdir( $ftp, $dir, [ $recurse ] ) | |
527 | # | |
528 | # Removes $dir on remote host via FTP. | |
529 | # $ftp is handle for remote host | |
530 | # | |
531 | # If $recurse is TRUE, the directory and deleted recursively. | |
532 | # This means all of its contents and subdirectories. | |
533 | # | |
534 | # Initial version contributed by Dinkum Software | |
535 | # | |
536 | sub rmdir | |
537 | { | |
538 | @_ == 2 || @_ == 3 or croak('usage: $ftp->rmdir( DIR [, RECURSE ] )'); | |
539 | ||
540 | # Pick off the args | |
541 | my ($ftp, $dir, $recurse) = @_ ; | |
542 | my $ok; | |
543 | ||
544 | return $ok | |
545 | if $ftp->_RMD( $dir ) || !$recurse; | |
546 | ||
547 | # Try to delete the contents | |
548 | # Get a list of all the files in the directory | |
549 | my $filelist = $ftp->ls($dir); | |
550 | ||
551 | return undef | |
552 | unless $filelist && @$filelist; # failed, it is probably not a directory | |
553 | ||
554 | # Go thru and delete each file or the directory | |
555 | my $file; | |
556 | foreach $file (map { m,/, ? $_ : "$dir/$_" } @$filelist) | |
557 | { | |
558 | next # successfully deleted the file | |
559 | if $ftp->delete($file); | |
560 | ||
561 | # Failed to delete it, assume its a directory | |
562 | # Recurse and ignore errors, the final rmdir() will | |
563 | # fail on any errors here | |
564 | return $ok | |
565 | unless $ok = $ftp->rmdir($file, 1) ; | |
566 | } | |
567 | ||
568 | # Directory should be empty | |
569 | # Try to remove the directory again | |
570 | # Pass results directly to caller | |
571 | # If any of the prior deletes failed, this | |
572 | # rmdir() will fail because directory is not empty | |
573 | return $ftp->_RMD($dir) ; | |
574 | } | |
575 | ||
576 | sub mkdir | |
577 | { | |
578 | @_ == 2 || @_ == 3 or croak 'usage: $ftp->mkdir( DIR [, RECURSE ] )'; | |
579 | ||
580 | my($ftp,$dir,$recurse) = @_; | |
581 | ||
582 | $ftp->_MKD($dir) || $recurse or | |
583 | return undef; | |
584 | ||
585 | my $path = $dir; | |
586 | ||
587 | unless($ftp->ok) | |
588 | { | |
589 | my @path = split(m#(?=/+)#, $dir); | |
590 | ||
591 | $path = ""; | |
592 | ||
593 | while(@path) | |
594 | { | |
595 | $path .= shift @path; | |
596 | ||
597 | $ftp->_MKD($path); | |
598 | ||
599 | $path = $ftp->_extract_path($path); | |
600 | } | |
601 | ||
602 | # If the creation of the last element was not sucessful, see if we | |
603 | # can cd to it, if so then return path | |
604 | ||
605 | unless($ftp->ok) | |
606 | { | |
607 | my($status,$message) = ($ftp->status,$ftp->message); | |
608 | my $pwd = $ftp->pwd; | |
609 | ||
610 | if($pwd && $ftp->cwd($dir)) | |
611 | { | |
612 | $path = $dir; | |
613 | $ftp->cwd($pwd); | |
614 | } | |
615 | else | |
616 | { | |
617 | undef $path; | |
618 | } | |
619 | $ftp->set_status($status,$message); | |
620 | } | |
621 | } | |
622 | ||
623 | $path; | |
624 | } | |
625 | ||
626 | sub delete | |
627 | { | |
628 | @_ == 2 || croak 'usage: $ftp->delete( FILENAME )'; | |
629 | ||
630 | $_[0]->_DELE($_[1]); | |
631 | } | |
632 | ||
633 | sub put { shift->_store_cmd("stor",@_) } | |
634 | sub put_unique { shift->_store_cmd("stou",@_) } | |
635 | sub append { shift->_store_cmd("appe",@_) } | |
636 | ||
637 | sub nlst { shift->_data_cmd("NLST",@_) } | |
638 | sub list { shift->_data_cmd("LIST",@_) } | |
639 | sub retr { shift->_data_cmd("RETR",@_) } | |
640 | sub stor { shift->_data_cmd("STOR",@_) } | |
641 | sub stou { shift->_data_cmd("STOU",@_) } | |
642 | sub appe { shift->_data_cmd("APPE",@_) } | |
643 | ||
644 | sub _store_cmd | |
645 | { | |
646 | my($ftp,$cmd,$local,$remote) = @_; | |
647 | my($loc,$sock,$len,$buf,$localfd); | |
648 | local *FD; | |
649 | ||
650 | $localfd = ref($local) || ref(\$local) eq "GLOB" | |
651 | ? fileno($local) | |
652 | : undef; | |
653 | ||
654 | unless(defined $remote) | |
655 | { | |
656 | croak 'Must specify remote filename with stream input' | |
657 | if defined $localfd; | |
658 | ||
659 | require File::Basename; | |
660 | $remote = File::Basename::basename($local); | |
661 | } | |
662 | ||
663 | croak("Bad remote filename '$remote'\n") | |
664 | if $remote =~ /[\r\n]/s; | |
665 | ||
666 | if(defined $localfd) | |
667 | { | |
668 | $loc = $local; | |
669 | } | |
670 | else | |
671 | { | |
672 | $loc = \*FD; | |
673 | ||
674 | unless(open($loc,"<$local")) | |
675 | { | |
676 | carp "Cannot open Local file $local: $!\n"; | |
677 | return undef; | |
678 | } | |
679 | } | |
680 | ||
681 | if($ftp->type eq 'I' && !binmode($loc)) | |
682 | { | |
683 | carp "Cannot binmode Local file $local: $!\n"; | |
684 | return undef; | |
685 | } | |
686 | ||
687 | delete ${*$ftp}{'net_ftp_port'}; | |
688 | delete ${*$ftp}{'net_ftp_pasv'}; | |
689 | ||
690 | $sock = $ftp->_data_cmd($cmd, $remote) or | |
691 | return undef; | |
692 | ||
693 | my $blksize = ${*$ftp}{'net_ftp_blksize'}; | |
694 | ||
695 | my($count,$hashh,$hashb,$ref) = (0); | |
696 | ||
697 | ($hashh,$hashb) = @$ref | |
698 | if($ref = ${*$ftp}{'net_ftp_hash'}); | |
699 | ||
700 | while(1) | |
701 | { | |
702 | last unless $len = sysread($loc,$buf="",$blksize); | |
703 | ||
704 | if($hashh) { | |
705 | $count += $len; | |
706 | print $hashh "#" x (int($count / $hashb)); | |
707 | $count %= $hashb; | |
708 | } | |
709 | ||
710 | my $wlen; | |
711 | unless(defined($wlen = $sock->write($buf,$len)) && $wlen == $len) | |
712 | { | |
713 | $sock->abort; | |
714 | close($loc) | |
715 | unless defined $localfd; | |
716 | print $hashh "\n" if $hashh; | |
717 | return undef; | |
718 | } | |
719 | } | |
720 | ||
721 | print $hashh "\n" if $hashh; | |
722 | ||
723 | close($loc) | |
724 | unless defined $localfd; | |
725 | ||
726 | $sock->close() or | |
727 | return undef; | |
728 | ||
729 | ($remote) = $ftp->message =~ /unique file name:\s*(\S*)\s*\)/ | |
730 | if ('STOU' eq uc $cmd); | |
731 | ||
732 | return $remote; | |
733 | } | |
734 | ||
735 | sub port | |
736 | { | |
737 | @_ == 1 || @_ == 2 or croak 'usage: $ftp->port([PORT])'; | |
738 | ||
739 | my($ftp,$port) = @_; | |
740 | my $ok; | |
741 | ||
742 | delete ${*$ftp}{'net_ftp_intern_port'}; | |
743 | ||
744 | unless(defined $port) | |
745 | { | |
746 | # create a Listen socket at same address as the command socket | |
747 | ||
748 | ${*$ftp}{'net_ftp_listen'} ||= IO::Socket::INET->new(Listen => 5, | |
749 | Proto => 'tcp', | |
750 | ); | |
751 | ||
752 | my $listen = ${*$ftp}{'net_ftp_listen'}; | |
753 | ||
754 | my($myport, @myaddr) = ($listen->sockport, split(/\./,$ftp->sockhost)); | |
755 | ||
756 | $port = join(',', @myaddr, $myport >> 8, $myport & 0xff); | |
757 | ||
758 | ${*$ftp}{'net_ftp_intern_port'} = 1; | |
759 | } | |
760 | ||
761 | $ok = $ftp->_PORT($port); | |
762 | ||
763 | ${*$ftp}{'net_ftp_port'} = $port; | |
764 | ||
765 | $ok; | |
766 | } | |
767 | ||
768 | sub ls { shift->_list_cmd("NLST",@_); } | |
769 | sub dir { shift->_list_cmd("LIST",@_); } | |
770 | ||
771 | sub pasv | |
772 | { | |
773 | @_ == 1 or croak 'usage: $ftp->pasv()'; | |
774 | ||
775 | my $ftp = shift; | |
776 | ||
777 | delete ${*$ftp}{'net_ftp_intern_port'}; | |
778 | ||
779 | $ftp->_PASV && $ftp->message =~ /(\d+(,\d+)+)/ | |
780 | ? ${*$ftp}{'net_ftp_pasv'} = $1 | |
781 | : undef; | |
782 | } | |
783 | ||
784 | sub unique_name | |
785 | { | |
786 | my $ftp = shift; | |
787 | ${*$ftp}{'net_ftp_unique'} || undef; | |
788 | } | |
789 | ||
790 | sub supported { | |
791 | @_ == 2 or croak 'usage: $ftp->supported( CMD )'; | |
792 | my $ftp = shift; | |
793 | my $cmd = uc shift; | |
794 | my $hash = ${*$ftp}{'net_ftp_supported'} ||= {}; | |
795 | ||
796 | return $hash->{$cmd} | |
797 | if exists $hash->{$cmd}; | |
798 | ||
799 | return $hash->{$cmd} = 0 | |
800 | unless $ftp->_HELP($cmd); | |
801 | ||
802 | my $text = $ftp->message; | |
803 | if($text =~ /following\s+commands/i) { | |
804 | $text =~ s/^.*\n//; | |
805 | $text =~ s/\n/ /sog; | |
806 | while($text =~ /(\w+)([* ])/g) { | |
807 | $hash->{"\U$1"} = $2 eq " " ? 1 : 0; | |
808 | } | |
809 | } | |
810 | else { | |
811 | $hash->{$cmd} = $text !~ /unimplemented/i; | |
812 | } | |
813 | ||
814 | $hash->{$cmd} ||= 0; | |
815 | } | |
816 | ||
817 | ## | |
818 | ## Deprecated methods | |
819 | ## | |
820 | ||
821 | sub lsl | |
822 | { | |
823 | carp "Use of Net::FTP::lsl deprecated, use 'dir'" | |
824 | if $^W; | |
825 | goto &dir; | |
826 | } | |
827 | ||
828 | sub authorise | |
829 | { | |
830 | carp "Use of Net::FTP::authorise deprecated, use 'authorize'" | |
831 | if $^W; | |
832 | goto &authorize; | |
833 | } | |
834 | ||
835 | ||
836 | ## | |
837 | ## Private methods | |
838 | ## | |
839 | ||
840 | sub _extract_path | |
841 | { | |
842 | my($ftp, $path) = @_; | |
843 | ||
844 | # This tries to work both with and without the quote doubling | |
845 | # convention (RFC 959 requires it, but the first 3 servers I checked | |
846 | # didn't implement it). It will fail on a server which uses a quote in | |
847 | # the message which isn't a part of or surrounding the path. | |
848 | $ftp->ok && | |
849 | $ftp->message =~ /(?:^|\s)\"(.*)\"(?:$|\s)/ && | |
850 | ($path = $1) =~ s/\"\"/\"/g; | |
851 | ||
852 | $path; | |
853 | } | |
854 | ||
855 | ## | |
856 | ## Communication methods | |
857 | ## | |
858 | ||
859 | sub _dataconn | |
860 | { | |
861 | my $ftp = shift; | |
862 | my $data = undef; | |
863 | my $pkg = "Net::FTP::" . $ftp->type; | |
864 | ||
865 | eval "require " . $pkg; | |
866 | ||
867 | $pkg =~ s/ /_/g; | |
868 | ||
869 | delete ${*$ftp}{'net_ftp_dataconn'}; | |
870 | ||
871 | if(defined ${*$ftp}{'net_ftp_pasv'}) | |
872 | { | |
873 | my @port = split(/,/,${*$ftp}{'net_ftp_pasv'}); | |
874 | ||
875 | $data = $pkg->new(PeerAddr => join(".",@port[0..3]), | |
876 | PeerPort => $port[4] * 256 + $port[5], | |
877 | Proto => 'tcp' | |
878 | ); | |
879 | } | |
880 | elsif(defined ${*$ftp}{'net_ftp_listen'}) | |
881 | { | |
882 | $data = ${*$ftp}{'net_ftp_listen'}->accept($pkg); | |
883 | close(delete ${*$ftp}{'net_ftp_listen'}); | |
884 | } | |
885 | ||
886 | if($data) | |
887 | { | |
888 | ${*$data} = ""; | |
889 | $data->timeout($ftp->timeout); | |
890 | ${*$ftp}{'net_ftp_dataconn'} = $data; | |
891 | ${*$data}{'net_ftp_cmd'} = $ftp; | |
892 | ${*$data}{'net_ftp_blksize'} = ${*$ftp}{'net_ftp_blksize'}; | |
893 | } | |
894 | ||
895 | $data; | |
896 | } | |
897 | ||
898 | sub _list_cmd | |
899 | { | |
900 | my $ftp = shift; | |
901 | my $cmd = uc shift; | |
902 | ||
903 | delete ${*$ftp}{'net_ftp_port'}; | |
904 | delete ${*$ftp}{'net_ftp_pasv'}; | |
905 | ||
906 | my $data = $ftp->_data_cmd($cmd,@_); | |
907 | ||
908 | return | |
909 | unless(defined $data); | |
910 | ||
911 | require Net::FTP::A; | |
912 | bless $data, "Net::FTP::A"; # Force ASCII mode | |
913 | ||
914 | my $databuf = ''; | |
915 | my $buf = ''; | |
916 | my $blksize = ${*$ftp}{'net_ftp_blksize'}; | |
917 | ||
918 | while($data->read($databuf,$blksize)) { | |
919 | $buf .= $databuf; | |
920 | } | |
921 | ||
922 | my $list = [ split(/\n/,$buf) ]; | |
923 | ||
924 | $data->close(); | |
925 | ||
926 | wantarray ? @{$list} | |
927 | : $list; | |
928 | } | |
929 | ||
930 | sub _data_cmd | |
931 | { | |
932 | my $ftp = shift; | |
933 | my $cmd = uc shift; | |
934 | my $ok = 1; | |
935 | my $where = delete ${*$ftp}{'net_ftp_rest'} || 0; | |
936 | my $arg; | |
937 | ||
938 | for $arg (@_) { | |
939 | croak("Bad argument '$arg'\n") | |
940 | if $arg =~ /[\r\n]/s; | |
941 | } | |
942 | ||
943 | if(${*$ftp}{'net_ftp_passive'} && | |
944 | !defined ${*$ftp}{'net_ftp_pasv'} && | |
945 | !defined ${*$ftp}{'net_ftp_port'}) | |
946 | { | |
947 | my $data = undef; | |
948 | ||
949 | $ok = defined $ftp->pasv; | |
950 | $ok = $ftp->_REST($where) | |
951 | if $ok && $where; | |
952 | ||
953 | if($ok) | |
954 | { | |
955 | $ftp->command($cmd,@_); | |
956 | $data = $ftp->_dataconn(); | |
957 | $ok = CMD_INFO == $ftp->response(); | |
958 | if($ok) | |
959 | { | |
960 | $data->reading | |
961 | if $data && $cmd =~ /RETR|LIST|NLST/; | |
962 | return $data | |
963 | } | |
964 | $data->_close | |
965 | if $data; | |
966 | } | |
967 | return undef; | |
968 | } | |
969 | ||
970 | $ok = $ftp->port | |
971 | unless (defined ${*$ftp}{'net_ftp_port'} || | |
972 | defined ${*$ftp}{'net_ftp_pasv'}); | |
973 | ||
974 | $ok = $ftp->_REST($where) | |
975 | if $ok && $where; | |
976 | ||
977 | return undef | |
978 | unless $ok; | |
979 | ||
980 | $ftp->command($cmd,@_); | |
981 | ||
982 | return 1 | |
983 | if(defined ${*$ftp}{'net_ftp_pasv'}); | |
984 | ||
985 | $ok = CMD_INFO == $ftp->response(); | |
986 | ||
987 | return $ok | |
988 | unless exists ${*$ftp}{'net_ftp_intern_port'}; | |
989 | ||
990 | if($ok) { | |
991 | my $data = $ftp->_dataconn(); | |
992 | ||
993 | $data->reading | |
994 | if $data && $cmd =~ /RETR|LIST|NLST/; | |
995 | ||
996 | return $data; | |
997 | } | |
998 | ||
999 | ||
1000 | close(delete ${*$ftp}{'net_ftp_listen'}); | |
1001 | ||
1002 | return undef; | |
1003 | } | |
1004 | ||
1005 | ## | |
1006 | ## Over-ride methods (Net::Cmd) | |
1007 | ## | |
1008 | ||
1009 | sub debug_text { $_[2] =~ /^(pass|resp|acct)/i ? "$1 ....\n" : $_[2]; } | |
1010 | ||
1011 | sub command | |
1012 | { | |
1013 | my $ftp = shift; | |
1014 | ||
1015 | delete ${*$ftp}{'net_ftp_port'}; | |
1016 | $ftp->SUPER::command(@_); | |
1017 | } | |
1018 | ||
1019 | sub response | |
1020 | { | |
1021 | my $ftp = shift; | |
1022 | my $code = $ftp->SUPER::response(); | |
1023 | ||
1024 | delete ${*$ftp}{'net_ftp_pasv'} | |
1025 | if ($code != CMD_MORE && $code != CMD_INFO); | |
1026 | ||
1027 | $code; | |
1028 | } | |
1029 | ||
1030 | sub parse_response | |
1031 | { | |
1032 | return ($1, $2 eq "-") | |
1033 | if $_[1] =~ s/^(\d\d\d)(.?)//o; | |
1034 | ||
1035 | my $ftp = shift; | |
1036 | ||
1037 | # Darn MS FTP server is a load of CRAP !!!! | |
1038 | return () | |
1039 | unless ${*$ftp}{'net_cmd_code'} + 0; | |
1040 | ||
1041 | (${*$ftp}{'net_cmd_code'},1); | |
1042 | } | |
1043 | ||
1044 | ## | |
1045 | ## Allow 2 servers to talk directly | |
1046 | ## | |
1047 | ||
1048 | sub pasv_xfer { | |
1049 | my($sftp,$sfile,$dftp,$dfile,$unique) = @_; | |
1050 | ||
1051 | ($dfile = $sfile) =~ s#.*/## | |
1052 | unless(defined $dfile); | |
1053 | ||
1054 | my $port = $sftp->pasv or | |
1055 | return undef; | |
1056 | ||
1057 | $dftp->port($port) or | |
1058 | return undef; | |
1059 | ||
1060 | return undef | |
1061 | unless($unique ? $dftp->stou($dfile) : $dftp->stor($dfile)); | |
1062 | ||
1063 | unless($sftp->retr($sfile) && $sftp->response == CMD_INFO) { | |
1064 | $sftp->retr($sfile); | |
1065 | $dftp->abort; | |
1066 | $dftp->response(); | |
1067 | return undef; | |
1068 | } | |
1069 | ||
1070 | $dftp->pasv_wait($sftp); | |
1071 | } | |
1072 | ||
1073 | sub pasv_wait | |
1074 | { | |
1075 | @_ == 2 or croak 'usage: $ftp->pasv_wait(NON_PASV_FTP)'; | |
1076 | ||
1077 | my($ftp, $non_pasv) = @_; | |
1078 | my($file,$rin,$rout); | |
1079 | ||
1080 | vec($rin='',fileno($ftp),1) = 1; | |
1081 | select($rout=$rin, undef, undef, undef); | |
1082 | ||
1083 | $ftp->response(); | |
1084 | $non_pasv->response(); | |
1085 | ||
1086 | return undef | |
1087 | unless $ftp->ok() && $non_pasv->ok(); | |
1088 | ||
1089 | return $1 | |
1090 | if $ftp->message =~ /unique file name:\s*(\S*)\s*\)/; | |
1091 | ||
1092 | return $1 | |
1093 | if $non_pasv->message =~ /unique file name:\s*(\S*)\s*\)/; | |
1094 | ||
1095 | return 1; | |
1096 | } | |
1097 | ||
1098 | sub cmd { shift->command(@_)->response() } | |
1099 | ||
1100 | ######################################## | |
1101 | # | |
1102 | # RFC959 commands | |
1103 | # | |
1104 | ||
1105 | sub _ABOR { shift->command("ABOR")->response() == CMD_OK } | |
1106 | sub _CDUP { shift->command("CDUP")->response() == CMD_OK } | |
1107 | sub _NOOP { shift->command("NOOP")->response() == CMD_OK } | |
1108 | sub _PASV { shift->command("PASV")->response() == CMD_OK } | |
1109 | sub _QUIT { shift->command("QUIT")->response() == CMD_OK } | |
1110 | sub _DELE { shift->command("DELE",@_)->response() == CMD_OK } | |
1111 | sub _CWD { shift->command("CWD", @_)->response() == CMD_OK } | |
1112 | sub _PORT { shift->command("PORT",@_)->response() == CMD_OK } | |
1113 | sub _RMD { shift->command("RMD", @_)->response() == CMD_OK } | |
1114 | sub _MKD { shift->command("MKD", @_)->response() == CMD_OK } | |
1115 | sub _PWD { shift->command("PWD", @_)->response() == CMD_OK } | |
1116 | sub _TYPE { shift->command("TYPE",@_)->response() == CMD_OK } | |
1117 | sub _RNTO { shift->command("RNTO",@_)->response() == CMD_OK } | |
1118 | sub _RESP { shift->command("RESP",@_)->response() == CMD_OK } | |
1119 | sub _MDTM { shift->command("MDTM",@_)->response() == CMD_OK } | |
1120 | sub _SIZE { shift->command("SIZE",@_)->response() == CMD_OK } | |
1121 | sub _HELP { shift->command("HELP",@_)->response() == CMD_OK } | |
1122 | sub _STAT { shift->command("STAT",@_)->response() == CMD_OK } | |
1123 | sub _APPE { shift->command("APPE",@_)->response() == CMD_INFO } | |
1124 | sub _LIST { shift->command("LIST",@_)->response() == CMD_INFO } | |
1125 | sub _NLST { shift->command("NLST",@_)->response() == CMD_INFO } | |
1126 | sub _RETR { shift->command("RETR",@_)->response() == CMD_INFO } | |
1127 | sub _STOR { shift->command("STOR",@_)->response() == CMD_INFO } | |
1128 | sub _STOU { shift->command("STOU",@_)->response() == CMD_INFO } | |
1129 | sub _RNFR { shift->command("RNFR",@_)->response() == CMD_MORE } | |
1130 | sub _REST { shift->command("REST",@_)->response() == CMD_MORE } | |
1131 | sub _USER { shift->command("user",@_)->response() } # A certain brain dead firewall :-) | |
1132 | sub _PASS { shift->command("PASS",@_)->response() } | |
1133 | sub _ACCT { shift->command("ACCT",@_)->response() } | |
1134 | sub _AUTH { shift->command("AUTH",@_)->response() } | |
1135 | ||
1136 | sub _ALLO { shift->unsupported(@_) } | |
1137 | sub _SMNT { shift->unsupported(@_) } | |
1138 | sub _MODE { shift->unsupported(@_) } | |
1139 | sub _SYST { shift->unsupported(@_) } | |
1140 | sub _STRU { shift->unsupported(@_) } | |
1141 | sub _REIN { shift->unsupported(@_) } | |
1142 | ||
1143 | 1; | |
1144 | ||
1145 | __END__ | |
1146 | ||
1147 | =head1 NAME | |
1148 | ||
1149 | Net::FTP - FTP Client class | |
1150 | ||
1151 | =head1 SYNOPSIS | |
1152 | ||
1153 | use Net::FTP; | |
1154 | ||
1155 | $ftp = Net::FTP->new("some.host.name", Debug => 0); | |
1156 | $ftp->login("anonymous",'me@here.there'); | |
1157 | $ftp->cwd("/pub"); | |
1158 | $ftp->get("that.file"); | |
1159 | $ftp->quit; | |
1160 | ||
1161 | =head1 DESCRIPTION | |
1162 | ||
1163 | C<Net::FTP> is a class implementing a simple FTP client in Perl as | |
1164 | described in RFC959. It provides wrappers for a subset of the RFC959 | |
1165 | commands. | |
1166 | ||
1167 | =head1 OVERVIEW | |
1168 | ||
1169 | FTP stands for File Transfer Protocol. It is a way of transferring | |
1170 | files between networked machines. The protocol defines a client | |
1171 | (whose commands are provided by this module) and a server (not | |
1172 | implemented in this module). Communication is always initiated by the | |
1173 | client, and the server responds with a message and a status code (and | |
1174 | sometimes with data). | |
1175 | ||
1176 | The FTP protocol allows files to be sent to or fetched from the | |
1177 | server. Each transfer involves a B<local file> (on the client) and a | |
1178 | B<remote file> (on the server). In this module, the same file name | |
1179 | will be used for both local and remote if only one is specified. This | |
1180 | means that transferring remote file C</path/to/file> will try to put | |
1181 | that file in C</path/to/file> locally, unless you specify a local file | |
1182 | name. | |
1183 | ||
1184 | The protocol also defines several standard B<translations> which the | |
1185 | file can undergo during transfer. These are ASCII, EBCDIC, binary, | |
1186 | and byte. ASCII is the default type, and indicates that the sender of | |
1187 | files will translate the ends of lines to a standard representation | |
1188 | which the receiver will then translate back into their local | |
1189 | representation. EBCDIC indicates the file being transferred is in | |
1190 | EBCDIC format. Binary (also known as image) format sends the data as | |
1191 | a contiguous bit stream. Byte format transfers the data as bytes, the | |
1192 | values of which remain the same regardless of differences in byte size | |
1193 | between the two machines (in theory - in practice you should only use | |
1194 | this if you really know what you're doing). | |
1195 | ||
1196 | =head1 CONSTRUCTOR | |
1197 | ||
1198 | =over 4 | |
1199 | ||
1200 | =item new (HOST [,OPTIONS]) | |
1201 | ||
1202 | This is the constructor for a new Net::FTP object. C<HOST> is the | |
1203 | name of the remote host to which a FTP connection is required. | |
1204 | ||
1205 | C<OPTIONS> are passed in a hash like fashion, using key and value pairs. | |
1206 | Possible options are: | |
1207 | ||
1208 | B<Firewall> - The name of a machine which acts as a FTP firewall. This can be | |
1209 | overridden by an environment variable C<FTP_FIREWALL>. If specified, and the | |
1210 | given host cannot be directly connected to, then the | |
1211 | connection is made to the firewall machine and the string C<@hostname> is | |
1212 | appended to the login identifier. This kind of setup is also refered to | |
1213 | as a ftp proxy. | |
1214 | ||
1215 | B<BlockSize> - This is the block size that Net::FTP will use when doing | |
1216 | transfers. (defaults to 10240) | |
1217 | ||
1218 | B<Port> - The port number to connect to on the remote machine for the | |
1219 | FTP connection | |
1220 | ||
1221 | B<Timeout> - Set a timeout value (defaults to 120) | |
1222 | ||
1223 | B<Debug> - debug level (see the debug method in L<Net::Cmd>) | |
1224 | ||
1225 | B<Passive> - If set to a non-zero value then all data transfers will be done | |
1226 | using passive mode. This is not usually required except for some I<dumb> | |
1227 | servers, and some firewall configurations. This can also be set by the | |
1228 | environment variable C<FTP_PASSIVE>. | |
1229 | ||
a816fa74 MG |
1230 | B<Hash> - If given a reference to a file handle (e.g., C<\*STDERR>), |
1231 | print hash marks (#) on that filehandle every 1024 bytes. This | |
1232 | simply invokes the C<hash()> method for you, so that hash marks | |
1233 | are displayed for all transfers. You can, of course, call C<hash()> | |
1234 | explicitly whenever you'd like. | |
406c51ee JH |
1235 | |
1236 | If the constructor fails undef will be returned and an error message will | |
1237 | be in $@ | |
1238 | ||
1239 | =back | |
1240 | ||
1241 | =head1 METHODS | |
1242 | ||
1243 | Unless otherwise stated all methods return either a I<true> or I<false> | |
1244 | value, with I<true> meaning that the operation was a success. When a method | |
1245 | states that it returns a value, failure will be returned as I<undef> or an | |
1246 | empty list. | |
1247 | ||
1248 | =over 4 | |
1249 | ||
1250 | =item login ([LOGIN [,PASSWORD [, ACCOUNT] ] ]) | |
1251 | ||
1252 | Log into the remote FTP server with the given login information. If | |
1253 | no arguments are given then the C<Net::FTP> uses the C<Net::Netrc> | |
1254 | package to lookup the login information for the connected host. | |
1255 | If no information is found then a login of I<anonymous> is used. | |
1256 | If no password is given and the login is I<anonymous> then the users | |
1257 | Email address will be used for a password. | |
1258 | ||
1259 | If the connection is via a firewall then the C<authorize> method will | |
1260 | be called with no arguments. | |
1261 | ||
1262 | =item authorize ( [AUTH [, RESP]]) | |
1263 | ||
1264 | This is a protocol used by some firewall ftp proxies. It is used | |
1265 | to authorise the user to send data out. If both arguments are not specified | |
1266 | then C<authorize> uses C<Net::Netrc> to do a lookup. | |
1267 | ||
1268 | =item site (ARGS) | |
1269 | ||
1270 | Send a SITE command to the remote server and wait for a response. | |
1271 | ||
1272 | Returns most significant digit of the response code. | |
1273 | ||
1274 | =item type (TYPE [, ARGS]) | |
1275 | ||
1276 | This method will send the TYPE command to the remote FTP server | |
1277 | to change the type of data transfer. The return value is the previous | |
1278 | value. | |
1279 | ||
1280 | =item ascii ([ARGS]) binary([ARGS]) ebcdic([ARGS]) byte([ARGS]) | |
1281 | ||
1282 | Synonyms for C<type> with the first arguments set correctly | |
1283 | ||
1284 | B<NOTE> ebcdic and byte are not fully supported. | |
1285 | ||
1286 | =item rename ( OLDNAME, NEWNAME ) | |
1287 | ||
1288 | Rename a file on the remote FTP server from C<OLDNAME> to C<NEWNAME>. This | |
1289 | is done by sending the RNFR and RNTO commands. | |
1290 | ||
1291 | =item delete ( FILENAME ) | |
1292 | ||
1293 | Send a request to the server to delete C<FILENAME>. | |
1294 | ||
1295 | =item cwd ( [ DIR ] ) | |
1296 | ||
1297 | Attempt to change directory to the directory given in C<$dir>. If | |
1298 | C<$dir> is C<"..">, the FTP C<CDUP> command is used to attempt to | |
1299 | move up one directory. If no directory is given then an attempt is made | |
1300 | to change the directory to the root directory. | |
1301 | ||
1302 | =item cdup () | |
1303 | ||
1304 | Change directory to the parent of the current directory. | |
1305 | ||
1306 | =item pwd () | |
1307 | ||
1308 | Returns the full pathname of the current directory. | |
1309 | ||
1310 | =item rmdir ( DIR ) | |
1311 | ||
1312 | Remove the directory with the name C<DIR>. | |
1313 | ||
1314 | =item mkdir ( DIR [, RECURSE ]) | |
1315 | ||
1316 | Create a new directory with the name C<DIR>. If C<RECURSE> is I<true> then | |
1317 | C<mkdir> will attempt to create all the directories in the given path. | |
1318 | ||
1319 | Returns the full pathname to the new directory. | |
1320 | ||
1321 | =item ls ( [ DIR ] ) | |
1322 | ||
1323 | Get a directory listing of C<DIR>, or the current directory. | |
1324 | ||
1325 | In an array context, returns a list of lines returned from the server. In | |
1326 | a scalar context, returns a reference to a list. | |
1327 | ||
1328 | =item dir ( [ DIR ] ) | |
1329 | ||
1330 | Get a directory listing of C<DIR>, or the current directory in long format. | |
1331 | ||
1332 | In an array context, returns a list of lines returned from the server. In | |
1333 | a scalar context, returns a reference to a list. | |
1334 | ||
1335 | =item get ( REMOTE_FILE [, LOCAL_FILE [, WHERE]] ) | |
1336 | ||
1337 | Get C<REMOTE_FILE> from the server and store locally. C<LOCAL_FILE> may be | |
1338 | a filename or a filehandle. If not specified the the file will be stored in | |
1339 | the current directory with the same leafname as the remote file. | |
1340 | ||
1341 | If C<WHERE> is given then the first C<WHERE> bytes of the file will | |
1342 | not be transfered, and the remaining bytes will be appended to | |
1343 | the local file if it already exists. | |
1344 | ||
1345 | Returns C<LOCAL_FILE>, or the generated local file name if C<LOCAL_FILE> | |
1346 | is not given. | |
1347 | ||
1348 | =item put ( LOCAL_FILE [, REMOTE_FILE ] ) | |
1349 | ||
1350 | Put a file on the remote server. C<LOCAL_FILE> may be a name or a filehandle. | |
1351 | If C<LOCAL_FILE> is a filehandle then C<REMOTE_FILE> must be specified. If | |
1352 | C<REMOTE_FILE> is not specified then the file will be stored in the current | |
1353 | directory with the same leafname as C<LOCAL_FILE>. | |
1354 | ||
1355 | Returns C<REMOTE_FILE>, or the generated remote filename if C<REMOTE_FILE> | |
1356 | is not given. | |
1357 | ||
1358 | B<NOTE>: If for some reason the transfer does not complete and an error is | |
1359 | returned then the contents that had been transfered will not be remove | |
1360 | automatically. | |
1361 | ||
1362 | =item put_unique ( LOCAL_FILE [, REMOTE_FILE ] ) | |
1363 | ||
1364 | Same as put but uses the C<STOU> command. | |
1365 | ||
1366 | Returns the name of the file on the server. | |
1367 | ||
1368 | =item append ( LOCAL_FILE [, REMOTE_FILE ] ) | |
1369 | ||
1370 | Same as put but appends to the file on the remote server. | |
1371 | ||
1372 | Returns C<REMOTE_FILE>, or the generated remote filename if C<REMOTE_FILE> | |
1373 | is not given. | |
1374 | ||
1375 | =item unique_name () | |
1376 | ||
1377 | Returns the name of the last file stored on the server using the | |
1378 | C<STOU> command. | |
1379 | ||
1380 | =item mdtm ( FILE ) | |
1381 | ||
1382 | Returns the I<modification time> of the given file | |
1383 | ||
1384 | =item size ( FILE ) | |
1385 | ||
1386 | Returns the size in bytes for the given file as stored on the remote server. | |
1387 | ||
1388 | B<NOTE>: The size reported is the size of the stored file on the remote server. | |
1389 | If the file is subsequently transfered from the server in ASCII mode | |
1390 | and the remote server and local machine have different ideas about | |
1391 | "End Of Line" then the size of file on the local machine after transfer | |
1392 | may be different. | |
1393 | ||
1394 | =item supported ( CMD ) | |
1395 | ||
1396 | Returns TRUE if the remote server supports the given command. | |
1397 | ||
1398 | =item hash ( [FILEHANDLE_GLOB_REF],[ BYTES_PER_HASH_MARK] ) | |
1399 | ||
1400 | Called without parameters, or with the first argument false, hash marks | |
1401 | are suppressed. If the first argument is true but not a reference to a | |
1402 | file handle glob, then \*STDERR is used. The second argument is the number | |
1403 | of bytes per hash mark printed, and defaults to 1024. In all cases the | |
1404 | return value is a reference to an array of two: the filehandle glob reference | |
1405 | and the bytes per hash mark. | |
1406 | ||
1407 | =back | |
1408 | ||
1409 | The following methods can return different results depending on | |
1410 | how they are called. If the user explicitly calls either | |
1411 | of the C<pasv> or C<port> methods then these methods will | |
1412 | return a I<true> or I<false> value. If the user does not | |
1413 | call either of these methods then the result will be a | |
1414 | reference to a C<Net::FTP::dataconn> based object. | |
1415 | ||
1416 | =over 4 | |
1417 | ||
1418 | =item nlst ( [ DIR ] ) | |
1419 | ||
1420 | Send a C<NLST> command to the server, with an optional parameter. | |
1421 | ||
1422 | =item list ( [ DIR ] ) | |
1423 | ||
1424 | Same as C<nlst> but using the C<LIST> command | |
1425 | ||
1426 | =item retr ( FILE ) | |
1427 | ||
1428 | Begin the retrieval of a file called C<FILE> from the remote server. | |
1429 | ||
1430 | =item stor ( FILE ) | |
1431 | ||
1432 | Tell the server that you wish to store a file. C<FILE> is the | |
1433 | name of the new file that should be created. | |
1434 | ||
1435 | =item stou ( FILE ) | |
1436 | ||
1437 | Same as C<stor> but using the C<STOU> command. The name of the unique | |
1438 | file which was created on the server will be available via the C<unique_name> | |
1439 | method after the data connection has been closed. | |
1440 | ||
1441 | =item appe ( FILE ) | |
1442 | ||
1443 | Tell the server that we want to append some data to the end of a file | |
1444 | called C<FILE>. If this file does not exist then create it. | |
1445 | ||
1446 | =back | |
1447 | ||
1448 | If for some reason you want to have complete control over the data connection, | |
1449 | this includes generating it and calling the C<response> method when required, | |
1450 | then the user can use these methods to do so. | |
1451 | ||
1452 | However calling these methods only affects the use of the methods above that | |
1453 | can return a data connection. They have no effect on methods C<get>, C<put>, | |
1454 | C<put_unique> and those that do not require data connections. | |
1455 | ||
1456 | =over 4 | |
1457 | ||
1458 | =item port ( [ PORT ] ) | |
1459 | ||
1460 | Send a C<PORT> command to the server. If C<PORT> is specified then it is sent | |
1461 | to the server. If not the a listen socket is created and the correct information | |
1462 | sent to the server. | |
1463 | ||
1464 | =item pasv () | |
1465 | ||
1466 | Tell the server to go into passive mode. Returns the text that represents the | |
1467 | port on which the server is listening, this text is in a suitable form to | |
1468 | sent to another ftp server using the C<port> method. | |
1469 | ||
1470 | =back | |
1471 | ||
1472 | The following methods can be used to transfer files between two remote | |
1473 | servers, providing that these two servers can connect directly to each other. | |
1474 | ||
1475 | =over 4 | |
1476 | ||
1477 | =item pasv_xfer ( SRC_FILE, DEST_SERVER [, DEST_FILE ] ) | |
1478 | ||
1479 | This method will do a file transfer between two remote ftp servers. If | |
1480 | C<DEST_FILE> is omitted then the leaf name of C<SRC_FILE> will be used. | |
1481 | ||
1482 | =item pasv_xfer_unique ( SRC_FILE, DEST_SERVER [, DEST_FILE ] ) | |
1483 | ||
1484 | Like C<pasv_xfer> but the file is stored on the remote server using | |
1485 | the STOU command. | |
1486 | ||
1487 | =item pasv_wait ( NON_PASV_SERVER ) | |
1488 | ||
1489 | This method can be used to wait for a transfer to complete between a passive | |
1490 | server and a non-passive server. The method should be called on the passive | |
1491 | server with the C<Net::FTP> object for the non-passive server passed as an | |
1492 | argument. | |
1493 | ||
1494 | =item abort () | |
1495 | ||
1496 | Abort the current data transfer. | |
1497 | ||
1498 | =item quit () | |
1499 | ||
1500 | Send the QUIT command to the remote FTP server and close the socket connection. | |
1501 | ||
1502 | =back | |
1503 | ||
1504 | =head2 Methods for the adventurous | |
1505 | ||
1506 | C<Net::FTP> inherits from C<Net::Cmd> so methods defined in C<Net::Cmd> may | |
1507 | be used to send commands to the remote FTP server. | |
1508 | ||
1509 | =over 4 | |
1510 | ||
1511 | =item quot (CMD [,ARGS]) | |
1512 | ||
1513 | Send a command, that Net::FTP does not directly support, to the remote | |
1514 | server and wait for a response. | |
1515 | ||
1516 | Returns most significant digit of the response code. | |
1517 | ||
1518 | B<WARNING> This call should only be used on commands that do not require | |
1519 | data connections. Misuse of this method can hang the connection. | |
1520 | ||
1521 | =back | |
1522 | ||
1523 | =head1 THE dataconn CLASS | |
1524 | ||
1525 | Some of the methods defined in C<Net::FTP> return an object which will | |
1526 | be derived from this class.The dataconn class itself is derived from | |
1527 | the C<IO::Socket::INET> class, so any normal IO operations can be performed. | |
1528 | However the following methods are defined in the dataconn class and IO should | |
1529 | be performed using these. | |
1530 | ||
1531 | =over 4 | |
1532 | ||
1533 | =item read ( BUFFER, SIZE [, TIMEOUT ] ) | |
1534 | ||
1535 | Read C<SIZE> bytes of data from the server and place it into C<BUFFER>, also | |
1536 | performing any <CRLF> translation necessary. C<TIMEOUT> is optional, if not | |
1537 | given the the timeout value from the command connection will be used. | |
1538 | ||
1539 | Returns the number of bytes read before any <CRLF> translation. | |
1540 | ||
1541 | =item write ( BUFFER, SIZE [, TIMEOUT ] ) | |
1542 | ||
1543 | Write C<SIZE> bytes of data from C<BUFFER> to the server, also | |
1544 | performing any <CRLF> translation necessary. C<TIMEOUT> is optional, if not | |
1545 | given the the timeout value from the command connection will be used. | |
1546 | ||
1547 | Returns the number of bytes written before any <CRLF> translation. | |
1548 | ||
1549 | =item abort () | |
1550 | ||
1551 | Abort the current data transfer. | |
1552 | ||
1553 | =item close () | |
1554 | ||
1555 | Close the data connection and get a response from the FTP server. Returns | |
1556 | I<true> if the connection was closed successfully and the first digit of | |
1557 | the response from the server was a '2'. | |
1558 | ||
1559 | =back | |
1560 | ||
1561 | =head1 UNIMPLEMENTED | |
1562 | ||
1563 | The following RFC959 commands have not been implemented: | |
1564 | ||
1565 | =over 4 | |
1566 | ||
1567 | =item B<ALLO> | |
1568 | ||
1569 | Allocates storage for the file to be transferred. | |
1570 | ||
1571 | =item B<SMNT> | |
1572 | ||
1573 | Mount a different file system structure without changing login or | |
1574 | accounting information. | |
1575 | ||
1576 | =item B<HELP> | |
1577 | ||
1578 | Ask the server for "helpful information" (that's what the RFC says) on | |
1579 | the commands it accepts. | |
1580 | ||
1581 | =item B<MODE> | |
1582 | ||
1583 | Specifies transfer mode (stream, block or compressed) for file to be | |
1584 | transferred. | |
1585 | ||
1586 | =item B<SYST> | |
1587 | ||
1588 | Request remote server system identification. | |
1589 | ||
1590 | =item B<STAT> | |
1591 | ||
1592 | Request remote server status. | |
1593 | ||
1594 | =item B<STRU> | |
1595 | ||
1596 | Specifies file structure for file to be transferred. | |
1597 | ||
1598 | =item B<REIN> | |
1599 | ||
1600 | Reinitialize the connection, flushing all I/O and account information. | |
1601 | ||
1602 | =back | |
1603 | ||
1604 | =head1 REPORTING BUGS | |
1605 | ||
1606 | When reporting bugs/problems please include as much information as possible. | |
1607 | It may be difficult for me to reproduce the problem as almost every setup | |
1608 | is different. | |
1609 | ||
1610 | A small script which yields the problem will probably be of help. It would | |
1611 | also be useful if this script was run with the extra options C<Debug => 1> | |
1612 | passed to the constructor, and the output sent with the bug report. If you | |
1613 | cannot include a small script then please include a Debug trace from a | |
1614 | run of your program which does yield the problem. | |
1615 | ||
1616 | =head1 AUTHOR | |
1617 | ||
1618 | Graham Barr <gbarr@pobox.com> | |
1619 | ||
1620 | =head1 SEE ALSO | |
1621 | ||
1622 | L<Net::Netrc> | |
1623 | L<Net::Cmd> | |
1624 | ||
1625 | ftp(1), ftpd(8), RFC 959 | |
1626 | http://www.cis.ohio-state.edu/htbin/rfc/rfc959.html | |
1627 | ||
1628 | =head1 CREDITS | |
1629 | ||
1630 | Henry Gabryjelski <henryg@WPI.EDU> - for the suggestion of creating directories | |
1631 | recursively. | |
1632 | ||
1633 | Nathan Torkington <gnat@frii.com> - for some input on the documentation. | |
1634 | ||
1635 | Roderick Schertler <roderick@gate.net> - for various inputs | |
1636 | ||
1637 | =head1 COPYRIGHT | |
1638 | ||
1639 | Copyright (c) 1995-1998 Graham Barr. All rights reserved. | |
1640 | This program is free software; you can redistribute it and/or modify it | |
1641 | under the same terms as Perl itself. | |
1642 | ||
1643 | =cut |