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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 Fcntl qw(O_WRONLY O_RDONLY O_APPEND O_CREAT O_TRUNC); | |
23 | # use AutoLoader qw(AUTOLOAD); | |
24 | ||
25 | $VERSION = "2.65"; # $Id: //depot/libnet/Net/FTP.pm#68 $ | |
26 | @ISA = qw(Exporter Net::Cmd IO::Socket::INET); | |
27 | ||
28 | # Someday I will "use constant", when I am not bothered to much about | |
29 | # compatability with older releases of perl | |
30 | ||
31 | use vars qw($TELNET_IAC $TELNET_IP $TELNET_DM); | |
32 | ($TELNET_IAC,$TELNET_IP,$TELNET_DM) = (255,244,242); | |
33 | ||
34 | # Name is too long for AutoLoad, it clashes with pasv_xfer | |
35 | sub pasv_xfer_unique { | |
36 | my($sftp,$sfile,$dftp,$dfile) = @_; | |
37 | $sftp->pasv_xfer($sfile,$dftp,$dfile,1); | |
38 | } | |
39 | ||
40 | BEGIN { | |
41 | # make a constant so code is fast'ish | |
42 | my $is_os390 = $^O eq 'os390'; | |
43 | *trEBCDIC = sub () { $is_os390 } | |
44 | } | |
45 | ||
46 | 1; | |
47 | # Having problems with AutoLoader | |
48 | #__END__ | |
49 | ||
50 | sub new | |
51 | { | |
52 | my $pkg = shift; | |
53 | my $peer = shift; | |
54 | my %arg = @_; | |
55 | ||
56 | my $host = $peer; | |
57 | my $fire = undef; | |
58 | my $fire_type = undef; | |
59 | ||
60 | if(exists($arg{Firewall}) || Net::Config->requires_firewall($peer)) | |
61 | { | |
62 | $fire = $arg{Firewall} | |
63 | || $ENV{FTP_FIREWALL} | |
64 | || $NetConfig{ftp_firewall} | |
65 | || undef; | |
66 | ||
67 | if(defined $fire) | |
68 | { | |
69 | $peer = $fire; | |
70 | delete $arg{Port}; | |
71 | $fire_type = $arg{FirewallType} | |
72 | || $ENV{FTP_FIREWALL_TYPE} | |
73 | || undef; | |
74 | } | |
75 | } | |
76 | ||
77 | my $ftp = $pkg->SUPER::new(PeerAddr => $peer, | |
78 | PeerPort => $arg{Port} || 'ftp(21)', | |
79 | Proto => 'tcp', | |
80 | Timeout => defined $arg{Timeout} | |
81 | ? $arg{Timeout} | |
82 | : 120 | |
83 | ) or return undef; | |
84 | ||
85 | ${*$ftp}{'net_ftp_host'} = $host; # Remote hostname | |
86 | ${*$ftp}{'net_ftp_type'} = 'A'; # ASCII/binary/etc mode | |
87 | ${*$ftp}{'net_ftp_blksize'} = abs($arg{'BlockSize'} || 10240); | |
88 | ||
89 | ${*$ftp}{'net_ftp_firewall'} = $fire | |
90 | if(defined $fire); | |
91 | ${*$ftp}{'net_ftp_firewall_type'} = $fire_type | |
92 | if(defined $fire_type); | |
93 | ||
94 | ${*$ftp}{'net_ftp_passive'} = int | |
95 | exists $arg{Passive} | |
96 | ? $arg{Passive} | |
97 | : exists $ENV{FTP_PASSIVE} | |
98 | ? $ENV{FTP_PASSIVE} | |
99 | : defined $fire | |
100 | ? $NetConfig{ftp_ext_passive} | |
101 | : $NetConfig{ftp_int_passive}; # Whew! :-) | |
102 | ||
103 | $ftp->hash(exists $arg{Hash} ? $arg{Hash} : 0, 1024); | |
104 | ||
105 | $ftp->autoflush(1); | |
106 | ||
107 | $ftp->debug(exists $arg{Debug} ? $arg{Debug} : undef); | |
108 | ||
109 | unless ($ftp->response() == CMD_OK) | |
110 | { | |
111 | $ftp->close(); | |
112 | $@ = $ftp->message; | |
113 | undef $ftp; | |
114 | } | |
115 | ||
116 | $ftp; | |
117 | } | |
118 | ||
119 | ## | |
120 | ## User interface methods | |
121 | ## | |
122 | ||
123 | sub hash { | |
124 | my $ftp = shift; # self | |
125 | ||
126 | my($h,$b) = @_; | |
127 | unless($h) { | |
128 | delete ${*$ftp}{'net_ftp_hash'}; | |
129 | return [\*STDERR,0]; | |
130 | } | |
131 | ($h,$b) = (ref($h)? $h : \*STDERR, $b || 1024); | |
132 | select((select($h), $|=1)[0]); | |
133 | $b = 512 if $b < 512; | |
134 | ${*$ftp}{'net_ftp_hash'} = [$h, $b]; | |
135 | } | |
136 | ||
137 | sub quit | |
138 | { | |
139 | my $ftp = shift; | |
140 | ||
141 | $ftp->_QUIT; | |
142 | $ftp->close; | |
143 | } | |
144 | ||
145 | sub DESTROY {} | |
146 | ||
147 | sub ascii { shift->type('A',@_); } | |
148 | sub binary { shift->type('I',@_); } | |
149 | ||
150 | sub ebcdic | |
151 | { | |
152 | carp "TYPE E is unsupported, shall default to I"; | |
153 | shift->type('E',@_); | |
154 | } | |
155 | ||
156 | sub byte | |
157 | { | |
158 | carp "TYPE L is unsupported, shall default to I"; | |
159 | shift->type('L',@_); | |
160 | } | |
161 | ||
162 | # Allow the user to send a command directly, BE CAREFUL !! | |
163 | ||
164 | sub quot | |
165 | { | |
166 | my $ftp = shift; | |
167 | my $cmd = shift; | |
168 | ||
169 | $ftp->command( uc $cmd, @_); | |
170 | $ftp->response(); | |
171 | } | |
172 | ||
173 | sub site | |
174 | { | |
175 | my $ftp = shift; | |
176 | ||
177 | $ftp->command("SITE", @_); | |
178 | $ftp->response(); | |
179 | } | |
180 | ||
181 | sub mdtm | |
182 | { | |
183 | my $ftp = shift; | |
184 | my $file = shift; | |
185 | ||
186 | # Server Y2K bug workaround | |
187 | # | |
188 | # sigh; some idiotic FTP servers use ("19%d",tm.tm_year) instead of | |
189 | # ("%d",tm.tm_year+1900). This results in an extra digit in the | |
190 | # string returned. To account for this we allow an optional extra | |
191 | # digit in the year. Then if the first two digits are 19 we use the | |
192 | # remainder, otherwise we subtract 1900 from the whole year. | |
193 | ||
194 | $ftp->_MDTM($file) && $ftp->message =~ /((\d\d)(\d\d\d?))(\d\d)(\d\d)(\d\d)(\d\d)(\d\d)/ | |
195 | ? timegm($8,$7,$6,$5,$4-1,$2 eq '19' ? $3 : ($1-1900)) | |
196 | : undef; | |
197 | } | |
198 | ||
199 | sub size { | |
200 | my $ftp = shift; | |
201 | my $file = shift; | |
202 | my $io; | |
203 | if($ftp->supported("SIZE")) { | |
204 | return $ftp->_SIZE($file) | |
205 | ? ($ftp->message =~ /(\d+)$/)[0] | |
206 | : undef; | |
207 | } | |
208 | elsif($ftp->supported("STAT")) { | |
209 | my @msg; | |
210 | return undef | |
211 | unless $ftp->_STAT($file) && (@msg = $ftp->message) == 3; | |
212 | my $line; | |
213 | foreach $line (@msg) { | |
214 | return (split(/\s+/,$line))[4] | |
215 | if $line =~ /^[-rwx]{10}/ | |
216 | } | |
217 | } | |
218 | else { | |
219 | my @files = $ftp->dir($file); | |
220 | if(@files) { | |
221 | return (split(/\s+/,$1))[4] | |
222 | if $files[0] =~ /^([-rwx]{10}.*)$/; | |
223 | } | |
224 | } | |
225 | undef; | |
226 | } | |
227 | ||
228 | sub login { | |
229 | my($ftp,$user,$pass,$acct) = @_; | |
230 | my($ok,$ruser,$fwtype); | |
231 | ||
232 | unless (defined $user) { | |
233 | require Net::Netrc; | |
234 | ||
235 | my $rc = Net::Netrc->lookup(${*$ftp}{'net_ftp_host'}); | |
236 | ||
237 | ($user,$pass,$acct) = $rc->lpa() | |
238 | if ($rc); | |
239 | } | |
240 | ||
241 | $user ||= "anonymous"; | |
242 | $ruser = $user; | |
243 | ||
244 | $fwtype = ${*$ftp}{'net_ftp_firewall_type'} | |
245 | || $NetConfig{'ftp_firewall_type'} | |
246 | || 0; | |
247 | ||
248 | if ($fwtype && defined ${*$ftp}{'net_ftp_firewall'}) { | |
249 | if ($fwtype == 1 || $fwtype == 7) { | |
250 | $user .= '@' . ${*$ftp}{'net_ftp_host'}; | |
251 | } | |
252 | else { | |
253 | require Net::Netrc; | |
254 | ||
255 | my $rc = Net::Netrc->lookup(${*$ftp}{'net_ftp_firewall'}); | |
256 | ||
257 | my($fwuser,$fwpass,$fwacct) = $rc ? $rc->lpa() : (); | |
258 | ||
259 | if ($fwtype == 5) { | |
260 | $user = join('@',$user,$fwuser,${*$ftp}{'net_ftp_host'}); | |
261 | $pass = $pass . '@' . $fwpass; | |
262 | } | |
263 | else { | |
264 | if ($fwtype == 2) { | |
265 | $user .= '@' . ${*$ftp}{'net_ftp_host'}; | |
266 | } | |
267 | elsif ($fwtype == 6) { | |
268 | $fwuser .= '@' . ${*$ftp}{'net_ftp_host'}; | |
269 | } | |
270 | ||
271 | $ok = $ftp->_USER($fwuser); | |
272 | ||
273 | return 0 unless $ok == CMD_OK || $ok == CMD_MORE; | |
274 | ||
275 | $ok = $ftp->_PASS($fwpass || ""); | |
276 | ||
277 | return 0 unless $ok == CMD_OK || $ok == CMD_MORE; | |
278 | ||
279 | $ok = $ftp->_ACCT($fwacct) | |
280 | if defined($fwacct); | |
281 | ||
282 | if ($fwtype == 3) { | |
283 | $ok = $ftp->command("SITE",${*$ftp}{'net_ftp_host'})->response; | |
284 | } | |
285 | elsif ($fwtype == 4) { | |
286 | $ok = $ftp->command("OPEN",${*$ftp}{'net_ftp_host'})->response; | |
287 | } | |
288 | ||
289 | return 0 unless $ok == CMD_OK || $ok == CMD_MORE; | |
290 | } | |
291 | } | |
292 | } | |
293 | ||
294 | $ok = $ftp->_USER($user); | |
295 | ||
296 | # Some dumb firewalls don't prefix the connection messages | |
297 | $ok = $ftp->response() | |
298 | if ($ok == CMD_OK && $ftp->code == 220 && $user =~ /\@/); | |
299 | ||
300 | if ($ok == CMD_MORE) { | |
301 | unless(defined $pass) { | |
302 | require Net::Netrc; | |
303 | ||
304 | my $rc = Net::Netrc->lookup(${*$ftp}{'net_ftp_host'}, $ruser); | |
305 | ||
306 | ($ruser,$pass,$acct) = $rc->lpa() | |
307 | if ($rc); | |
308 | ||
309 | $pass = '-anonymous@' | |
310 | if (!defined $pass && (!defined($ruser) || $ruser =~ /^anonymous/o)); | |
311 | } | |
312 | ||
313 | $ok = $ftp->_PASS($pass || ""); | |
314 | } | |
315 | ||
316 | $ok = $ftp->_ACCT($acct) | |
317 | if (defined($acct) && ($ok == CMD_MORE || $ok == CMD_OK)); | |
318 | ||
319 | if ($fwtype == 7 && $ok == CMD_OK && defined ${*$ftp}{'net_ftp_firewall'}) { | |
320 | my($f,$auth,$resp) = _auth_id($ftp); | |
321 | $ftp->authorize($auth,$resp) if defined($resp); | |
322 | } | |
323 | ||
324 | $ok == CMD_OK; | |
325 | } | |
326 | ||
327 | sub account | |
328 | { | |
329 | @_ == 2 or croak 'usage: $ftp->account( ACCT )'; | |
330 | my $ftp = shift; | |
331 | my $acct = shift; | |
332 | $ftp->_ACCT($acct) == CMD_OK; | |
333 | } | |
334 | ||
335 | sub _auth_id { | |
336 | my($ftp,$auth,$resp) = @_; | |
337 | ||
338 | unless(defined $resp) | |
339 | { | |
340 | require Net::Netrc; | |
341 | ||
342 | $auth ||= eval { (getpwuid($>))[0] } || $ENV{NAME}; | |
343 | ||
344 | my $rc = Net::Netrc->lookup(${*$ftp}{'net_ftp_firewall'}, $auth) | |
345 | || Net::Netrc->lookup(${*$ftp}{'net_ftp_firewall'}); | |
346 | ||
347 | ($auth,$resp) = $rc->lpa() | |
348 | if ($rc); | |
349 | } | |
350 | ($ftp,$auth,$resp); | |
351 | } | |
352 | ||
353 | sub authorize | |
354 | { | |
355 | @_ >= 1 || @_ <= 3 or croak 'usage: $ftp->authorize( [AUTH [, RESP]])'; | |
356 | ||
357 | my($ftp,$auth,$resp) = &_auth_id; | |
358 | ||
359 | my $ok = $ftp->_AUTH($auth || ""); | |
360 | ||
361 | $ok = $ftp->_RESP($resp || "") | |
362 | if ($ok == CMD_MORE); | |
363 | ||
364 | $ok == CMD_OK; | |
365 | } | |
366 | ||
367 | sub rename | |
368 | { | |
369 | @_ == 3 or croak 'usage: $ftp->rename(FROM, TO)'; | |
370 | ||
371 | my($ftp,$from,$to) = @_; | |
372 | ||
373 | $ftp->_RNFR($from) | |
374 | && $ftp->_RNTO($to); | |
375 | } | |
376 | ||
377 | sub type | |
378 | { | |
379 | my $ftp = shift; | |
380 | my $type = shift; | |
381 | my $oldval = ${*$ftp}{'net_ftp_type'}; | |
382 | ||
383 | return $oldval | |
384 | unless (defined $type); | |
385 | ||
386 | return undef | |
387 | unless ($ftp->_TYPE($type,@_)); | |
388 | ||
389 | ${*$ftp}{'net_ftp_type'} = join(" ",$type,@_); | |
390 | ||
391 | $oldval; | |
392 | } | |
393 | ||
394 | sub abort | |
395 | { | |
396 | my $ftp = shift; | |
397 | ||
398 | send($ftp,pack("CCC", $TELNET_IAC, $TELNET_IP, $TELNET_IAC),MSG_OOB); | |
399 | ||
400 | $ftp->command(pack("C",$TELNET_DM) . "ABOR"); | |
401 | ||
402 | ${*$ftp}{'net_ftp_dataconn'}->close() | |
403 | if defined ${*$ftp}{'net_ftp_dataconn'}; | |
404 | ||
405 | $ftp->response(); | |
406 | ||
407 | $ftp->status == CMD_OK; | |
408 | } | |
409 | ||
410 | sub get | |
411 | { | |
412 | my($ftp,$remote,$local,$where) = @_; | |
413 | ||
414 | my($loc,$len,$buf,$resp,$data); | |
415 | local *FD; | |
416 | ||
417 | my $localfd = ref($local) || ref(\$local) eq "GLOB"; | |
418 | ||
419 | ($local = $remote) =~ s#^.*/## | |
420 | unless(defined $local); | |
421 | ||
422 | croak("Bad remote filename '$remote'\n") | |
423 | if $remote =~ /[\r\n]/s; | |
424 | ||
425 | ${*$ftp}{'net_ftp_rest'} = $where | |
426 | if ($where); | |
427 | ||
428 | delete ${*$ftp}{'net_ftp_port'}; | |
429 | delete ${*$ftp}{'net_ftp_pasv'}; | |
430 | ||
431 | $data = $ftp->retr($remote) or | |
432 | return undef; | |
433 | ||
434 | if($localfd) | |
435 | { | |
436 | $loc = $local; | |
437 | } | |
438 | else | |
439 | { | |
440 | $loc = \*FD; | |
441 | ||
442 | unless(sysopen($loc, $local, O_CREAT | O_WRONLY | ($where ? O_APPEND : O_TRUNC))) | |
443 | { | |
444 | carp "Cannot open Local file $local: $!\n"; | |
445 | $data->abort; | |
446 | return undef; | |
447 | } | |
448 | } | |
449 | ||
450 | if($ftp->type eq 'I' && !binmode($loc)) | |
451 | { | |
452 | carp "Cannot binmode Local file $local: $!\n"; | |
453 | $data->abort; | |
454 | close($loc) unless $localfd; | |
455 | return undef; | |
456 | } | |
457 | ||
458 | $buf = ''; | |
459 | my($count,$hashh,$hashb,$ref) = (0); | |
460 | ||
461 | ($hashh,$hashb) = @$ref | |
462 | if($ref = ${*$ftp}{'net_ftp_hash'}); | |
463 | ||
464 | my $blksize = ${*$ftp}{'net_ftp_blksize'}; | |
465 | ||
466 | while(1) | |
467 | { | |
468 | last unless $len = $data->read($buf,$blksize); | |
469 | ||
470 | if (trEBCDIC && $ftp->type ne 'I') | |
471 | { | |
472 | $buf = $ftp->toebcdic($buf); | |
473 | $len = length($buf); | |
474 | } | |
475 | ||
476 | if($hashh) { | |
477 | $count += $len; | |
478 | print $hashh "#" x (int($count / $hashb)); | |
479 | $count %= $hashb; | |
480 | } | |
481 | my $written = syswrite($loc,$buf,$len); | |
482 | unless(defined($written) && $written == $len) | |
483 | { | |
484 | carp "Cannot write to Local file $local: $!\n"; | |
485 | $data->abort; | |
486 | close($loc) | |
487 | unless $localfd; | |
488 | return undef; | |
489 | } | |
490 | } | |
491 | ||
492 | print $hashh "\n" if $hashh; | |
493 | ||
494 | unless ($localfd) | |
495 | { | |
496 | unless (close($loc)) | |
497 | { | |
498 | carp "Cannot close file $local (perhaps disk space) $!\n"; | |
499 | return undef; | |
500 | } | |
501 | } | |
502 | ||
503 | unless ($data->close()) # implied $ftp->response | |
504 | { | |
505 | carp "Unable to close datastream"; | |
506 | return undef; | |
507 | } | |
508 | ||
509 | return $local; | |
510 | } | |
511 | ||
512 | sub cwd | |
513 | { | |
514 | @_ == 1 || @_ == 2 or croak 'usage: $ftp->cwd( [ DIR ] )'; | |
515 | ||
516 | my($ftp,$dir) = @_; | |
517 | ||
518 | $dir = "/" unless defined($dir) && $dir =~ /\S/; | |
519 | ||
520 | $dir eq ".." | |
521 | ? $ftp->_CDUP() | |
522 | : $ftp->_CWD($dir); | |
523 | } | |
524 | ||
525 | sub cdup | |
526 | { | |
527 | @_ == 1 or croak 'usage: $ftp->cdup()'; | |
528 | $_[0]->_CDUP; | |
529 | } | |
530 | ||
531 | sub pwd | |
532 | { | |
533 | @_ == 1 || croak 'usage: $ftp->pwd()'; | |
534 | my $ftp = shift; | |
535 | ||
536 | $ftp->_PWD(); | |
537 | $ftp->_extract_path; | |
538 | } | |
539 | ||
540 | # rmdir( $ftp, $dir, [ $recurse ] ) | |
541 | # | |
542 | # Removes $dir on remote host via FTP. | |
543 | # $ftp is handle for remote host | |
544 | # | |
545 | # If $recurse is TRUE, the directory and deleted recursively. | |
546 | # This means all of its contents and subdirectories. | |
547 | # | |
548 | # Initial version contributed by Dinkum Software | |
549 | # | |
550 | sub rmdir | |
551 | { | |
552 | @_ == 2 || @_ == 3 or croak('usage: $ftp->rmdir( DIR [, RECURSE ] )'); | |
553 | ||
554 | # Pick off the args | |
555 | my ($ftp, $dir, $recurse) = @_ ; | |
556 | my $ok; | |
557 | ||
558 | return $ok | |
559 | if $ok = $ftp->_RMD( $dir ) or !$recurse; | |
560 | ||
561 | # Try to delete the contents | |
562 | # Get a list of all the files in the directory | |
563 | my $filelist = $ftp->ls($dir); | |
564 | ||
565 | return undef | |
566 | unless $filelist && @$filelist; # failed, it is probably not a directory | |
567 | ||
568 | # Go thru and delete each file or the directory | |
569 | my $file; | |
570 | foreach $file (map { m,/, ? $_ : "$dir/$_" } @$filelist) | |
571 | { | |
572 | next # successfully deleted the file | |
573 | if $ftp->delete($file); | |
574 | ||
575 | # Failed to delete it, assume its a directory | |
576 | # Recurse and ignore errors, the final rmdir() will | |
577 | # fail on any errors here | |
578 | return $ok | |
579 | unless $ok = $ftp->rmdir($file, 1) ; | |
580 | } | |
581 | ||
582 | # Directory should be empty | |
583 | # Try to remove the directory again | |
584 | # Pass results directly to caller | |
585 | # If any of the prior deletes failed, this | |
586 | # rmdir() will fail because directory is not empty | |
587 | return $ftp->_RMD($dir) ; | |
588 | } | |
589 | ||
590 | sub restart | |
591 | { | |
592 | @_ == 2 || croak 'usage: $ftp->restart( BYTE_OFFSET )'; | |
593 | ||
594 | my($ftp,$where) = @_; | |
595 | ||
596 | ${*$ftp}{'net_ftp_rest'} = $where; | |
597 | ||
598 | return undef; | |
599 | } | |
600 | ||
601 | ||
602 | sub mkdir | |
603 | { | |
604 | @_ == 2 || @_ == 3 or croak 'usage: $ftp->mkdir( DIR [, RECURSE ] )'; | |
605 | ||
606 | my($ftp,$dir,$recurse) = @_; | |
607 | ||
608 | $ftp->_MKD($dir) || $recurse or | |
609 | return undef; | |
610 | ||
611 | my $path = $dir; | |
612 | ||
613 | unless($ftp->ok) | |
614 | { | |
615 | my @path = split(m#(?=/+)#, $dir); | |
616 | ||
617 | $path = ""; | |
618 | ||
619 | while(@path) | |
620 | { | |
621 | $path .= shift @path; | |
622 | ||
623 | $ftp->_MKD($path); | |
624 | ||
625 | $path = $ftp->_extract_path($path); | |
626 | } | |
627 | ||
628 | # If the creation of the last element was not sucessful, see if we | |
629 | # can cd to it, if so then return path | |
630 | ||
631 | unless($ftp->ok) | |
632 | { | |
633 | my($status,$message) = ($ftp->status,$ftp->message); | |
634 | my $pwd = $ftp->pwd; | |
635 | ||
636 | if($pwd && $ftp->cwd($dir)) | |
637 | { | |
638 | $path = $dir; | |
639 | $ftp->cwd($pwd); | |
640 | } | |
641 | else | |
642 | { | |
643 | undef $path; | |
644 | } | |
645 | $ftp->set_status($status,$message); | |
646 | } | |
647 | } | |
648 | ||
649 | $path; | |
650 | } | |
651 | ||
652 | sub delete | |
653 | { | |
654 | @_ == 2 || croak 'usage: $ftp->delete( FILENAME )'; | |
655 | ||
656 | $_[0]->_DELE($_[1]); | |
657 | } | |
658 | ||
659 | sub put { shift->_store_cmd("stor",@_) } | |
660 | sub put_unique { shift->_store_cmd("stou",@_) } | |
661 | sub append { shift->_store_cmd("appe",@_) } | |
662 | ||
663 | sub nlst { shift->_data_cmd("NLST",@_) } | |
664 | sub list { shift->_data_cmd("LIST",@_) } | |
665 | sub retr { shift->_data_cmd("RETR",@_) } | |
666 | sub stor { shift->_data_cmd("STOR",@_) } | |
667 | sub stou { shift->_data_cmd("STOU",@_) } | |
668 | sub appe { shift->_data_cmd("APPE",@_) } | |
669 | ||
670 | sub _store_cmd | |
671 | { | |
672 | my($ftp,$cmd,$local,$remote) = @_; | |
673 | my($loc,$sock,$len,$buf); | |
674 | local *FD; | |
675 | ||
676 | my $localfd = ref($local) || ref(\$local) eq "GLOB"; | |
677 | ||
678 | unless(defined $remote) | |
679 | { | |
680 | croak 'Must specify remote filename with stream input' | |
681 | if $localfd; | |
682 | ||
683 | require File::Basename; | |
684 | $remote = File::Basename::basename($local); | |
685 | } | |
686 | ||
687 | croak("Bad remote filename '$remote'\n") | |
688 | if $remote =~ /[\r\n]/s; | |
689 | ||
690 | if($localfd) | |
691 | { | |
692 | $loc = $local; | |
693 | } | |
694 | else | |
695 | { | |
696 | $loc = \*FD; | |
697 | ||
698 | unless(sysopen($loc, $local, O_RDONLY)) | |
699 | { | |
700 | carp "Cannot open Local file $local: $!\n"; | |
701 | return undef; | |
702 | } | |
703 | } | |
704 | ||
705 | if($ftp->type eq 'I' && !binmode($loc)) | |
706 | { | |
707 | carp "Cannot binmode Local file $local: $!\n"; | |
708 | return undef; | |
709 | } | |
710 | ||
711 | delete ${*$ftp}{'net_ftp_port'}; | |
712 | delete ${*$ftp}{'net_ftp_pasv'}; | |
713 | ||
714 | $sock = $ftp->_data_cmd($cmd, $remote) or | |
715 | return undef; | |
716 | ||
717 | my $blksize = ${*$ftp}{'net_ftp_blksize'}; | |
718 | ||
719 | my($count,$hashh,$hashb,$ref) = (0); | |
720 | ||
721 | ($hashh,$hashb) = @$ref | |
722 | if($ref = ${*$ftp}{'net_ftp_hash'}); | |
723 | ||
724 | while(1) | |
725 | { | |
726 | last unless $len = sysread($loc,$buf="",$blksize); | |
727 | ||
728 | if (trEBCDIC && $ftp->type ne 'I') | |
729 | { | |
730 | $buf = $ftp->toascii($buf); | |
731 | $len = length($buf); | |
732 | } | |
733 | ||
734 | if($hashh) { | |
735 | $count += $len; | |
736 | print $hashh "#" x (int($count / $hashb)); | |
737 | $count %= $hashb; | |
738 | } | |
739 | ||
740 | my $wlen; | |
741 | unless(defined($wlen = $sock->write($buf,$len)) && $wlen == $len) | |
742 | { | |
743 | $sock->abort; | |
744 | close($loc) | |
745 | unless $localfd; | |
746 | print $hashh "\n" if $hashh; | |
747 | return undef; | |
748 | } | |
749 | } | |
750 | ||
751 | print $hashh "\n" if $hashh; | |
752 | ||
753 | close($loc) | |
754 | unless $localfd; | |
755 | ||
756 | $sock->close() or | |
757 | return undef; | |
758 | ||
759 | if ('STOU' eq uc $cmd and $ftp->message =~ m/unique\s+file\s*name\s*:\s*(.*)\)|"(.*)"/) | |
760 | { | |
761 | require File::Basename; | |
762 | $remote = File::Basename::basename($+) | |
763 | } | |
764 | ||
765 | return $remote; | |
766 | } | |
767 | ||
768 | sub port | |
769 | { | |
770 | @_ == 1 || @_ == 2 or croak 'usage: $ftp->port([PORT])'; | |
771 | ||
772 | my($ftp,$port) = @_; | |
773 | my $ok; | |
774 | ||
775 | delete ${*$ftp}{'net_ftp_intern_port'}; | |
776 | ||
777 | unless(defined $port) | |
778 | { | |
779 | # create a Listen socket at same address as the command socket | |
780 | ||
781 | ${*$ftp}{'net_ftp_listen'} ||= IO::Socket::INET->new(Listen => 5, | |
782 | Proto => 'tcp', | |
783 | Timeout => $ftp->timeout, | |
784 | LocalAddr => $ftp->sockhost, | |
785 | ); | |
786 | ||
787 | my $listen = ${*$ftp}{'net_ftp_listen'}; | |
788 | ||
789 | my($myport, @myaddr) = ($listen->sockport, split(/\./,$listen->sockhost)); | |
790 | ||
791 | $port = join(',', @myaddr, $myport >> 8, $myport & 0xff); | |
792 | ||
793 | ${*$ftp}{'net_ftp_intern_port'} = 1; | |
794 | } | |
795 | ||
796 | $ok = $ftp->_PORT($port); | |
797 | ||
798 | ${*$ftp}{'net_ftp_port'} = $port; | |
799 | ||
800 | $ok; | |
801 | } | |
802 | ||
803 | sub ls { shift->_list_cmd("NLST",@_); } | |
804 | sub dir { shift->_list_cmd("LIST",@_); } | |
805 | ||
806 | sub pasv | |
807 | { | |
808 | @_ == 1 or croak 'usage: $ftp->pasv()'; | |
809 | ||
810 | my $ftp = shift; | |
811 | ||
812 | delete ${*$ftp}{'net_ftp_intern_port'}; | |
813 | ||
814 | $ftp->_PASV && $ftp->message =~ /(\d+(,\d+)+)/ | |
815 | ? ${*$ftp}{'net_ftp_pasv'} = $1 | |
816 | : undef; | |
817 | } | |
818 | ||
819 | sub unique_name | |
820 | { | |
821 | my $ftp = shift; | |
822 | ${*$ftp}{'net_ftp_unique'} || undef; | |
823 | } | |
824 | ||
825 | sub supported { | |
826 | @_ == 2 or croak 'usage: $ftp->supported( CMD )'; | |
827 | my $ftp = shift; | |
828 | my $cmd = uc shift; | |
829 | my $hash = ${*$ftp}{'net_ftp_supported'} ||= {}; | |
830 | ||
831 | return $hash->{$cmd} | |
832 | if exists $hash->{$cmd}; | |
833 | ||
834 | return $hash->{$cmd} = 0 | |
835 | unless $ftp->_HELP($cmd); | |
836 | ||
837 | my $text = $ftp->message; | |
838 | if($text =~ /following\s+commands/i) { | |
839 | $text =~ s/^.*\n//; | |
840 | while($text =~ /(\*?)(\w+)(\*?)/sg) { | |
841 | $hash->{"\U$2"} = !length("$1$3"); | |
842 | } | |
843 | } | |
844 | else { | |
845 | $hash->{$cmd} = $text !~ /unimplemented/i; | |
846 | } | |
847 | ||
848 | $hash->{$cmd} ||= 0; | |
849 | } | |
850 | ||
851 | ## | |
852 | ## Deprecated methods | |
853 | ## | |
854 | ||
855 | sub lsl | |
856 | { | |
857 | carp "Use of Net::FTP::lsl deprecated, use 'dir'" | |
858 | if $^W; | |
859 | goto &dir; | |
860 | } | |
861 | ||
862 | sub authorise | |
863 | { | |
864 | carp "Use of Net::FTP::authorise deprecated, use 'authorize'" | |
865 | if $^W; | |
866 | goto &authorize; | |
867 | } | |
868 | ||
869 | ||
870 | ## | |
871 | ## Private methods | |
872 | ## | |
873 | ||
874 | sub _extract_path | |
875 | { | |
876 | my($ftp, $path) = @_; | |
877 | ||
878 | # This tries to work both with and without the quote doubling | |
879 | # convention (RFC 959 requires it, but the first 3 servers I checked | |
880 | # didn't implement it). It will fail on a server which uses a quote in | |
881 | # the message which isn't a part of or surrounding the path. | |
882 | $ftp->ok && | |
883 | $ftp->message =~ /(?:^|\s)\"(.*)\"(?:$|\s)/ && | |
884 | ($path = $1) =~ s/\"\"/\"/g; | |
885 | ||
886 | $path; | |
887 | } | |
888 | ||
889 | ## | |
890 | ## Communication methods | |
891 | ## | |
892 | ||
893 | sub _dataconn | |
894 | { | |
895 | my $ftp = shift; | |
896 | my $data = undef; | |
897 | my $pkg = "Net::FTP::" . $ftp->type; | |
898 | ||
899 | eval "require " . $pkg; | |
900 | ||
901 | $pkg =~ s/ /_/g; | |
902 | ||
903 | delete ${*$ftp}{'net_ftp_dataconn'}; | |
904 | ||
905 | if(defined ${*$ftp}{'net_ftp_pasv'}) | |
906 | { | |
907 | my @port = split(/,/,${*$ftp}{'net_ftp_pasv'}); | |
908 | ||
909 | $data = $pkg->new(PeerAddr => join(".",@port[0..3]), | |
910 | PeerPort => $port[4] * 256 + $port[5], | |
911 | Proto => 'tcp' | |
912 | ); | |
913 | } | |
914 | elsif(defined ${*$ftp}{'net_ftp_listen'}) | |
915 | { | |
916 | $data = ${*$ftp}{'net_ftp_listen'}->accept($pkg); | |
917 | close(delete ${*$ftp}{'net_ftp_listen'}); | |
918 | } | |
919 | ||
920 | if($data) | |
921 | { | |
922 | ${*$data} = ""; | |
923 | $data->timeout($ftp->timeout); | |
924 | ${*$ftp}{'net_ftp_dataconn'} = $data; | |
925 | ${*$data}{'net_ftp_cmd'} = $ftp; | |
926 | ${*$data}{'net_ftp_blksize'} = ${*$ftp}{'net_ftp_blksize'}; | |
927 | } | |
928 | ||
929 | $data; | |
930 | } | |
931 | ||
932 | sub _list_cmd | |
933 | { | |
934 | my $ftp = shift; | |
935 | my $cmd = uc shift; | |
936 | ||
937 | delete ${*$ftp}{'net_ftp_port'}; | |
938 | delete ${*$ftp}{'net_ftp_pasv'}; | |
939 | ||
940 | my $data = $ftp->_data_cmd($cmd,@_); | |
941 | ||
942 | return | |
943 | unless(defined $data); | |
944 | ||
945 | require Net::FTP::A; | |
946 | bless $data, "Net::FTP::A"; # Force ASCII mode | |
947 | ||
948 | my $databuf = ''; | |
949 | my $buf = ''; | |
950 | my $blksize = ${*$ftp}{'net_ftp_blksize'}; | |
951 | ||
952 | while($data->read($databuf,$blksize)) { | |
953 | $buf .= $databuf; | |
954 | } | |
955 | ||
956 | my $list = [ split(/\n/,$buf) ]; | |
957 | ||
958 | $data->close(); | |
959 | ||
960 | if (trEBCDIC) | |
961 | { | |
962 | for (@$list) { $_ = $ftp->toebcdic($_) } | |
963 | } | |
964 | ||
965 | wantarray ? @{$list} | |
966 | : $list; | |
967 | } | |
968 | ||
969 | sub _data_cmd | |
970 | { | |
971 | my $ftp = shift; | |
972 | my $cmd = uc shift; | |
973 | my $ok = 1; | |
974 | my $where = delete ${*$ftp}{'net_ftp_rest'} || 0; | |
975 | my $arg; | |
976 | ||
977 | for $arg (@_) { | |
978 | croak("Bad argument '$arg'\n") | |
979 | if $arg =~ /[\r\n]/s; | |
980 | } | |
981 | ||
982 | if(${*$ftp}{'net_ftp_passive'} && | |
983 | !defined ${*$ftp}{'net_ftp_pasv'} && | |
984 | !defined ${*$ftp}{'net_ftp_port'}) | |
985 | { | |
986 | my $data = undef; | |
987 | ||
988 | $ok = defined $ftp->pasv; | |
989 | $ok = $ftp->_REST($where) | |
990 | if $ok && $where; | |
991 | ||
992 | if($ok) | |
993 | { | |
994 | $ftp->command($cmd,@_); | |
995 | $data = $ftp->_dataconn(); | |
996 | $ok = CMD_INFO == $ftp->response(); | |
997 | if($ok) | |
998 | { | |
999 | $data->reading | |
1000 | if $data && $cmd =~ /RETR|LIST|NLST/; | |
1001 | return $data | |
1002 | } | |
1003 | $data->_close | |
1004 | if $data; | |
1005 | } | |
1006 | return undef; | |
1007 | } | |
1008 | ||
1009 | $ok = $ftp->port | |
1010 | unless (defined ${*$ftp}{'net_ftp_port'} || | |
1011 | defined ${*$ftp}{'net_ftp_pasv'}); | |
1012 | ||
1013 | $ok = $ftp->_REST($where) | |
1014 | if $ok && $where; | |
1015 | ||
1016 | return undef | |
1017 | unless $ok; | |
1018 | ||
1019 | $ftp->command($cmd,@_); | |
1020 | ||
1021 | return 1 | |
1022 | if(defined ${*$ftp}{'net_ftp_pasv'}); | |
1023 | ||
1024 | $ok = CMD_INFO == $ftp->response(); | |
1025 | ||
1026 | return $ok | |
1027 | unless exists ${*$ftp}{'net_ftp_intern_port'}; | |
1028 | ||
1029 | if($ok) { | |
1030 | my $data = $ftp->_dataconn(); | |
1031 | ||
1032 | $data->reading | |
1033 | if $data && $cmd =~ /RETR|LIST|NLST/; | |
1034 | ||
1035 | return $data; | |
1036 | } | |
1037 | ||
1038 | ||
1039 | close(delete ${*$ftp}{'net_ftp_listen'}); | |
1040 | ||
1041 | return undef; | |
1042 | } | |
1043 | ||
1044 | ## | |
1045 | ## Over-ride methods (Net::Cmd) | |
1046 | ## | |
1047 | ||
1048 | sub debug_text { $_[2] =~ /^(pass|resp|acct)/i ? "$1 ....\n" : $_[2]; } | |
1049 | ||
1050 | sub command | |
1051 | { | |
1052 | my $ftp = shift; | |
1053 | ||
1054 | delete ${*$ftp}{'net_ftp_port'}; | |
1055 | $ftp->SUPER::command(@_); | |
1056 | } | |
1057 | ||
1058 | sub response | |
1059 | { | |
1060 | my $ftp = shift; | |
1061 | my $code = $ftp->SUPER::response(); | |
1062 | ||
1063 | delete ${*$ftp}{'net_ftp_pasv'} | |
1064 | if ($code != CMD_MORE && $code != CMD_INFO); | |
1065 | ||
1066 | $code; | |
1067 | } | |
1068 | ||
1069 | sub parse_response | |
1070 | { | |
1071 | return ($1, $2 eq "-") | |
1072 | if $_[1] =~ s/^(\d\d\d)(.?)//o; | |
1073 | ||
1074 | my $ftp = shift; | |
1075 | ||
1076 | # Darn MS FTP server is a load of CRAP !!!! | |
1077 | return () | |
1078 | unless ${*$ftp}{'net_cmd_code'} + 0; | |
1079 | ||
1080 | (${*$ftp}{'net_cmd_code'},1); | |
1081 | } | |
1082 | ||
1083 | ## | |
1084 | ## Allow 2 servers to talk directly | |
1085 | ## | |
1086 | ||
1087 | sub pasv_xfer { | |
1088 | my($sftp,$sfile,$dftp,$dfile,$unique) = @_; | |
1089 | ||
1090 | ($dfile = $sfile) =~ s#.*/## | |
1091 | unless(defined $dfile); | |
1092 | ||
1093 | my $port = $sftp->pasv or | |
1094 | return undef; | |
1095 | ||
1096 | $dftp->port($port) or | |
1097 | return undef; | |
1098 | ||
1099 | return undef | |
1100 | unless($unique ? $dftp->stou($dfile) : $dftp->stor($dfile)); | |
1101 | ||
1102 | unless($sftp->retr($sfile) && $sftp->response == CMD_INFO) { | |
1103 | $sftp->retr($sfile); | |
1104 | $dftp->abort; | |
1105 | $dftp->response(); | |
1106 | return undef; | |
1107 | } | |
1108 | ||
1109 | $dftp->pasv_wait($sftp); | |
1110 | } | |
1111 | ||
1112 | sub pasv_wait | |
1113 | { | |
1114 | @_ == 2 or croak 'usage: $ftp->pasv_wait(NON_PASV_FTP)'; | |
1115 | ||
1116 | my($ftp, $non_pasv) = @_; | |
1117 | my($file,$rin,$rout); | |
1118 | ||
1119 | vec($rin='',fileno($ftp),1) = 1; | |
1120 | select($rout=$rin, undef, undef, undef); | |
1121 | ||
1122 | $ftp->response(); | |
1123 | $non_pasv->response(); | |
1124 | ||
1125 | return undef | |
1126 | unless $ftp->ok() && $non_pasv->ok(); | |
1127 | ||
1128 | return $1 | |
1129 | if $ftp->message =~ /unique file name:\s*(\S*)\s*\)/; | |
1130 | ||
1131 | return $1 | |
1132 | if $non_pasv->message =~ /unique file name:\s*(\S*)\s*\)/; | |
1133 | ||
1134 | return 1; | |
1135 | } | |
1136 | ||
1137 | sub cmd { shift->command(@_)->response() } | |
1138 | ||
1139 | ######################################## | |
1140 | # | |
1141 | # RFC959 commands | |
1142 | # | |
1143 | ||
1144 | sub _ABOR { shift->command("ABOR")->response() == CMD_OK } | |
1145 | sub _CDUP { shift->command("CDUP")->response() == CMD_OK } | |
1146 | sub _NOOP { shift->command("NOOP")->response() == CMD_OK } | |
1147 | sub _PASV { shift->command("PASV")->response() == CMD_OK } | |
1148 | sub _QUIT { shift->command("QUIT")->response() == CMD_OK } | |
1149 | sub _DELE { shift->command("DELE",@_)->response() == CMD_OK } | |
1150 | sub _CWD { shift->command("CWD", @_)->response() == CMD_OK } | |
1151 | sub _PORT { shift->command("PORT",@_)->response() == CMD_OK } | |
1152 | sub _RMD { shift->command("RMD", @_)->response() == CMD_OK } | |
1153 | sub _MKD { shift->command("MKD", @_)->response() == CMD_OK } | |
1154 | sub _PWD { shift->command("PWD", @_)->response() == CMD_OK } | |
1155 | sub _TYPE { shift->command("TYPE",@_)->response() == CMD_OK } | |
1156 | sub _RNTO { shift->command("RNTO",@_)->response() == CMD_OK } | |
1157 | sub _RESP { shift->command("RESP",@_)->response() == CMD_OK } | |
1158 | sub _MDTM { shift->command("MDTM",@_)->response() == CMD_OK } | |
1159 | sub _SIZE { shift->command("SIZE",@_)->response() == CMD_OK } | |
1160 | sub _HELP { shift->command("HELP",@_)->response() == CMD_OK } | |
1161 | sub _STAT { shift->command("STAT",@_)->response() == CMD_OK } | |
1162 | sub _APPE { shift->command("APPE",@_)->response() == CMD_INFO } | |
1163 | sub _LIST { shift->command("LIST",@_)->response() == CMD_INFO } | |
1164 | sub _NLST { shift->command("NLST",@_)->response() == CMD_INFO } | |
1165 | sub _RETR { shift->command("RETR",@_)->response() == CMD_INFO } | |
1166 | sub _STOR { shift->command("STOR",@_)->response() == CMD_INFO } | |
1167 | sub _STOU { shift->command("STOU",@_)->response() == CMD_INFO } | |
1168 | sub _RNFR { shift->command("RNFR",@_)->response() == CMD_MORE } | |
1169 | sub _REST { shift->command("REST",@_)->response() == CMD_MORE } | |
1170 | sub _USER { shift->command("user",@_)->response() } # A certain brain dead firewall :-) | |
1171 | sub _PASS { shift->command("PASS",@_)->response() } | |
1172 | sub _ACCT { shift->command("ACCT",@_)->response() } | |
1173 | sub _AUTH { shift->command("AUTH",@_)->response() } | |
1174 | ||
1175 | sub _ALLO { shift->unsupported(@_) } | |
1176 | sub _SMNT { shift->unsupported(@_) } | |
1177 | sub _MODE { shift->unsupported(@_) } | |
1178 | sub _SYST { shift->unsupported(@_) } | |
1179 | sub _STRU { shift->unsupported(@_) } | |
1180 | sub _REIN { shift->unsupported(@_) } | |
1181 | ||
1182 | 1; | |
1183 | ||
1184 | __END__ | |
1185 | ||
1186 | =head1 NAME | |
1187 | ||
1188 | Net::FTP - FTP Client class | |
1189 | ||
1190 | =head1 SYNOPSIS | |
1191 | ||
1192 | use Net::FTP; | |
1193 | ||
1194 | $ftp = Net::FTP->new("some.host.name", Debug => 0); | |
1195 | $ftp->login("anonymous",'-anonymous@'); | |
1196 | $ftp->cwd("/pub"); | |
1197 | $ftp->get("that.file"); | |
1198 | $ftp->quit; | |
1199 | ||
1200 | =head1 DESCRIPTION | |
1201 | ||
1202 | C<Net::FTP> is a class implementing a simple FTP client in Perl as | |
1203 | described in RFC959. It provides wrappers for a subset of the RFC959 | |
1204 | commands. | |
1205 | ||
1206 | =head1 OVERVIEW | |
1207 | ||
1208 | FTP stands for File Transfer Protocol. It is a way of transferring | |
1209 | files between networked machines. The protocol defines a client | |
1210 | (whose commands are provided by this module) and a server (not | |
1211 | implemented in this module). Communication is always initiated by the | |
1212 | client, and the server responds with a message and a status code (and | |
1213 | sometimes with data). | |
1214 | ||
1215 | The FTP protocol allows files to be sent to or fetched from the | |
1216 | server. Each transfer involves a B<local file> (on the client) and a | |
1217 | B<remote file> (on the server). In this module, the same file name | |
1218 | will be used for both local and remote if only one is specified. This | |
1219 | means that transferring remote file C</path/to/file> will try to put | |
1220 | that file in C</path/to/file> locally, unless you specify a local file | |
1221 | name. | |
1222 | ||
1223 | The protocol also defines several standard B<translations> which the | |
1224 | file can undergo during transfer. These are ASCII, EBCDIC, binary, | |
1225 | and byte. ASCII is the default type, and indicates that the sender of | |
1226 | files will translate the ends of lines to a standard representation | |
1227 | which the receiver will then translate back into their local | |
1228 | representation. EBCDIC indicates the file being transferred is in | |
1229 | EBCDIC format. Binary (also known as image) format sends the data as | |
1230 | a contiguous bit stream. Byte format transfers the data as bytes, the | |
1231 | values of which remain the same regardless of differences in byte size | |
1232 | between the two machines (in theory - in practice you should only use | |
1233 | this if you really know what you're doing). | |
1234 | ||
1235 | =head1 CONSTRUCTOR | |
1236 | ||
1237 | =over 4 | |
1238 | ||
1239 | =item new (HOST [,OPTIONS]) | |
1240 | ||
1241 | This is the constructor for a new Net::FTP object. C<HOST> is the | |
1242 | name of the remote host to which an FTP connection is required. | |
1243 | ||
1244 | C<OPTIONS> are passed in a hash like fashion, using key and value pairs. | |
1245 | Possible options are: | |
1246 | ||
1247 | B<Firewall> - The name of a machine which acts as an FTP firewall. This can be | |
1248 | overridden by an environment variable C<FTP_FIREWALL>. If specified, and the | |
1249 | given host cannot be directly connected to, then the | |
1250 | connection is made to the firewall machine and the string C<@hostname> is | |
1251 | appended to the login identifier. This kind of setup is also refered to | |
1252 | as an ftp proxy. | |
1253 | ||
1254 | B<FirewallType> - The type of firewall running on the machine indicated by | |
1255 | B<Firewall>. This can be overridden by an environment variable | |
1256 | C<FTP_FIREWALL_TYPE>. For a list of permissible types, see the description of | |
1257 | ftp_firewall_type in L<Net::Config>. | |
1258 | ||
1259 | B<BlockSize> - This is the block size that Net::FTP will use when doing | |
1260 | transfers. (defaults to 10240) | |
1261 | ||
1262 | B<Port> - The port number to connect to on the remote machine for the | |
1263 | FTP connection | |
1264 | ||
1265 | B<Timeout> - Set a timeout value (defaults to 120) | |
1266 | ||
1267 | B<Debug> - debug level (see the debug method in L<Net::Cmd>) | |
1268 | ||
1269 | B<Passive> - If set to a non-zero value then all data transfers will be done | |
1270 | using passive mode. This is not usually required except for some I<dumb> | |
1271 | servers, and some firewall configurations. This can also be set by the | |
1272 | environment variable C<FTP_PASSIVE>. | |
1273 | ||
1274 | B<Hash> - If given a reference to a file handle (e.g., C<\*STDERR>), | |
1275 | print hash marks (#) on that filehandle every 1024 bytes. This | |
1276 | simply invokes the C<hash()> method for you, so that hash marks | |
1277 | are displayed for all transfers. You can, of course, call C<hash()> | |
1278 | explicitly whenever you'd like. | |
1279 | ||
1280 | If the constructor fails undef will be returned and an error message will | |
1281 | be in $@ | |
1282 | ||
1283 | =back | |
1284 | ||
1285 | =head1 METHODS | |
1286 | ||
1287 | Unless otherwise stated all methods return either a I<true> or I<false> | |
1288 | value, with I<true> meaning that the operation was a success. When a method | |
1289 | states that it returns a value, failure will be returned as I<undef> or an | |
1290 | empty list. | |
1291 | ||
1292 | =over 4 | |
1293 | ||
1294 | =item login ([LOGIN [,PASSWORD [, ACCOUNT] ] ]) | |
1295 | ||
1296 | Log into the remote FTP server with the given login information. If | |
1297 | no arguments are given then the C<Net::FTP> uses the C<Net::Netrc> | |
1298 | package to lookup the login information for the connected host. | |
1299 | If no information is found then a login of I<anonymous> is used. | |
1300 | If no password is given and the login is I<anonymous> then I<anonymous@> | |
1301 | will be used for password. | |
1302 | ||
1303 | If the connection is via a firewall then the C<authorize> method will | |
1304 | be called with no arguments. | |
1305 | ||
1306 | =item authorize ( [AUTH [, RESP]]) | |
1307 | ||
1308 | This is a protocol used by some firewall ftp proxies. It is used | |
1309 | to authorise the user to send data out. If both arguments are not specified | |
1310 | then C<authorize> uses C<Net::Netrc> to do a lookup. | |
1311 | ||
1312 | =item site (ARGS) | |
1313 | ||
1314 | Send a SITE command to the remote server and wait for a response. | |
1315 | ||
1316 | Returns most significant digit of the response code. | |
1317 | ||
1318 | =item type (TYPE [, ARGS]) | |
1319 | ||
1320 | This method will send the TYPE command to the remote FTP server | |
1321 | to change the type of data transfer. The return value is the previous | |
1322 | value. | |
1323 | ||
1324 | =item ascii ([ARGS]) binary([ARGS]) ebcdic([ARGS]) byte([ARGS]) | |
1325 | ||
1326 | Synonyms for C<type> with the first arguments set correctly | |
1327 | ||
1328 | B<NOTE> ebcdic and byte are not fully supported. | |
1329 | ||
1330 | =item rename ( OLDNAME, NEWNAME ) | |
1331 | ||
1332 | Rename a file on the remote FTP server from C<OLDNAME> to C<NEWNAME>. This | |
1333 | is done by sending the RNFR and RNTO commands. | |
1334 | ||
1335 | =item delete ( FILENAME ) | |
1336 | ||
1337 | Send a request to the server to delete C<FILENAME>. | |
1338 | ||
1339 | =item cwd ( [ DIR ] ) | |
1340 | ||
1341 | Attempt to change directory to the directory given in C<$dir>. If | |
1342 | C<$dir> is C<"..">, the FTP C<CDUP> command is used to attempt to | |
1343 | move up one directory. If no directory is given then an attempt is made | |
1344 | to change the directory to the root directory. | |
1345 | ||
1346 | =item cdup () | |
1347 | ||
1348 | Change directory to the parent of the current directory. | |
1349 | ||
1350 | =item pwd () | |
1351 | ||
1352 | Returns the full pathname of the current directory. | |
1353 | ||
1354 | =item restart ( WHERE ) | |
1355 | ||
1356 | Set the byte offset at which to begin the next data transfer. Net::FTP simply | |
1357 | records this value and uses it when during the next data transfer. For this | |
1358 | reason this method will not return an error, but setting it may cause | |
1359 | a subsequent data transfer to fail. | |
1360 | ||
1361 | =item rmdir ( DIR ) | |
1362 | ||
1363 | Remove the directory with the name C<DIR>. | |
1364 | ||
1365 | =item mkdir ( DIR [, RECURSE ]) | |
1366 | ||
1367 | Create a new directory with the name C<DIR>. If C<RECURSE> is I<true> then | |
1368 | C<mkdir> will attempt to create all the directories in the given path. | |
1369 | ||
1370 | Returns the full pathname to the new directory. | |
1371 | ||
1372 | =item ls ( [ DIR ] ) | |
1373 | ||
1374 | Get a directory listing of C<DIR>, or the current directory. | |
1375 | ||
1376 | In an array context, returns a list of lines returned from the server. In | |
1377 | a scalar context, returns a reference to a list. | |
1378 | ||
1379 | =item dir ( [ DIR ] ) | |
1380 | ||
1381 | Get a directory listing of C<DIR>, or the current directory in long format. | |
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 get ( REMOTE_FILE [, LOCAL_FILE [, WHERE]] ) | |
1387 | ||
1388 | Get C<REMOTE_FILE> from the server and store locally. C<LOCAL_FILE> may be | |
1389 | a filename or a filehandle. If not specified, the file will be stored in | |
1390 | the current directory with the same leafname as the remote file. | |
1391 | ||
1392 | If C<WHERE> is given then the first C<WHERE> bytes of the file will | |
1393 | not be transfered, and the remaining bytes will be appended to | |
1394 | the local file if it already exists. | |
1395 | ||
1396 | Returns C<LOCAL_FILE>, or the generated local file name if C<LOCAL_FILE> | |
1397 | is not given. If an error was encountered undef is returned. | |
1398 | ||
1399 | =item put ( LOCAL_FILE [, REMOTE_FILE ] ) | |
1400 | ||
1401 | Put a file on the remote server. C<LOCAL_FILE> may be a name or a filehandle. | |
1402 | If C<LOCAL_FILE> is a filehandle then C<REMOTE_FILE> must be specified. If | |
1403 | C<REMOTE_FILE> is not specified then the file will be stored in the current | |
1404 | directory with the same leafname as C<LOCAL_FILE>. | |
1405 | ||
1406 | Returns C<REMOTE_FILE>, or the generated remote filename if C<REMOTE_FILE> | |
1407 | is not given. | |
1408 | ||
1409 | B<NOTE>: If for some reason the transfer does not complete and an error is | |
1410 | returned then the contents that had been transfered will not be remove | |
1411 | automatically. | |
1412 | ||
1413 | =item put_unique ( LOCAL_FILE [, REMOTE_FILE ] ) | |
1414 | ||
1415 | Same as put but uses the C<STOU> command. | |
1416 | ||
1417 | Returns the name of the file on the server. | |
1418 | ||
1419 | =item append ( LOCAL_FILE [, REMOTE_FILE ] ) | |
1420 | ||
1421 | Same as put but appends to the file on the remote server. | |
1422 | ||
1423 | Returns C<REMOTE_FILE>, or the generated remote filename if C<REMOTE_FILE> | |
1424 | is not given. | |
1425 | ||
1426 | =item unique_name () | |
1427 | ||
1428 | Returns the name of the last file stored on the server using the | |
1429 | C<STOU> command. | |
1430 | ||
1431 | =item mdtm ( FILE ) | |
1432 | ||
1433 | Returns the I<modification time> of the given file | |
1434 | ||
1435 | =item size ( FILE ) | |
1436 | ||
1437 | Returns the size in bytes for the given file as stored on the remote server. | |
1438 | ||
1439 | B<NOTE>: The size reported is the size of the stored file on the remote server. | |
1440 | If the file is subsequently transfered from the server in ASCII mode | |
1441 | and the remote server and local machine have different ideas about | |
1442 | "End Of Line" then the size of file on the local machine after transfer | |
1443 | may be different. | |
1444 | ||
1445 | =item supported ( CMD ) | |
1446 | ||
1447 | Returns TRUE if the remote server supports the given command. | |
1448 | ||
1449 | =item hash ( [FILEHANDLE_GLOB_REF],[ BYTES_PER_HASH_MARK] ) | |
1450 | ||
1451 | Called without parameters, or with the first argument false, hash marks | |
1452 | are suppressed. If the first argument is true but not a reference to a | |
1453 | file handle glob, then \*STDERR is used. The second argument is the number | |
1454 | of bytes per hash mark printed, and defaults to 1024. In all cases the | |
1455 | return value is a reference to an array of two: the filehandle glob reference | |
1456 | and the bytes per hash mark. | |
1457 | ||
1458 | =back | |
1459 | ||
1460 | The following methods can return different results depending on | |
1461 | how they are called. If the user explicitly calls either | |
1462 | of the C<pasv> or C<port> methods then these methods will | |
1463 | return a I<true> or I<false> value. If the user does not | |
1464 | call either of these methods then the result will be a | |
1465 | reference to a C<Net::FTP::dataconn> based object. | |
1466 | ||
1467 | =over 4 | |
1468 | ||
1469 | =item nlst ( [ DIR ] ) | |
1470 | ||
1471 | Send an C<NLST> command to the server, with an optional parameter. | |
1472 | ||
1473 | =item list ( [ DIR ] ) | |
1474 | ||
1475 | Same as C<nlst> but using the C<LIST> command | |
1476 | ||
1477 | =item retr ( FILE ) | |
1478 | ||
1479 | Begin the retrieval of a file called C<FILE> from the remote server. | |
1480 | ||
1481 | =item stor ( FILE ) | |
1482 | ||
1483 | Tell the server that you wish to store a file. C<FILE> is the | |
1484 | name of the new file that should be created. | |
1485 | ||
1486 | =item stou ( FILE ) | |
1487 | ||
1488 | Same as C<stor> but using the C<STOU> command. The name of the unique | |
1489 | file which was created on the server will be available via the C<unique_name> | |
1490 | method after the data connection has been closed. | |
1491 | ||
1492 | =item appe ( FILE ) | |
1493 | ||
1494 | Tell the server that we want to append some data to the end of a file | |
1495 | called C<FILE>. If this file does not exist then create it. | |
1496 | ||
1497 | =back | |
1498 | ||
1499 | If for some reason you want to have complete control over the data connection, | |
1500 | this includes generating it and calling the C<response> method when required, | |
1501 | then the user can use these methods to do so. | |
1502 | ||
1503 | However calling these methods only affects the use of the methods above that | |
1504 | can return a data connection. They have no effect on methods C<get>, C<put>, | |
1505 | C<put_unique> and those that do not require data connections. | |
1506 | ||
1507 | =over 4 | |
1508 | ||
1509 | =item port ( [ PORT ] ) | |
1510 | ||
1511 | Send a C<PORT> command to the server. If C<PORT> is specified then it is sent | |
1512 | to the server. If not, then a listen socket is created and the correct information | |
1513 | sent to the server. | |
1514 | ||
1515 | =item pasv () | |
1516 | ||
1517 | Tell the server to go into passive mode. Returns the text that represents the | |
1518 | port on which the server is listening, this text is in a suitable form to | |
1519 | sent to another ftp server using the C<port> method. | |
1520 | ||
1521 | =back | |
1522 | ||
1523 | The following methods can be used to transfer files between two remote | |
1524 | servers, providing that these two servers can connect directly to each other. | |
1525 | ||
1526 | =over 4 | |
1527 | ||
1528 | =item pasv_xfer ( SRC_FILE, DEST_SERVER [, DEST_FILE ] ) | |
1529 | ||
1530 | This method will do a file transfer between two remote ftp servers. If | |
1531 | C<DEST_FILE> is omitted then the leaf name of C<SRC_FILE> will be used. | |
1532 | ||
1533 | =item pasv_xfer_unique ( SRC_FILE, DEST_SERVER [, DEST_FILE ] ) | |
1534 | ||
1535 | Like C<pasv_xfer> but the file is stored on the remote server using | |
1536 | the STOU command. | |
1537 | ||
1538 | =item pasv_wait ( NON_PASV_SERVER ) | |
1539 | ||
1540 | This method can be used to wait for a transfer to complete between a passive | |
1541 | server and a non-passive server. The method should be called on the passive | |
1542 | server with the C<Net::FTP> object for the non-passive server passed as an | |
1543 | argument. | |
1544 | ||
1545 | =item abort () | |
1546 | ||
1547 | Abort the current data transfer. | |
1548 | ||
1549 | =item quit () | |
1550 | ||
1551 | Send the QUIT command to the remote FTP server and close the socket connection. | |
1552 | ||
1553 | =back | |
1554 | ||
1555 | =head2 Methods for the adventurous | |
1556 | ||
1557 | C<Net::FTP> inherits from C<Net::Cmd> so methods defined in C<Net::Cmd> may | |
1558 | be used to send commands to the remote FTP server. | |
1559 | ||
1560 | =over 4 | |
1561 | ||
1562 | =item quot (CMD [,ARGS]) | |
1563 | ||
1564 | Send a command, that Net::FTP does not directly support, to the remote | |
1565 | server and wait for a response. | |
1566 | ||
1567 | Returns most significant digit of the response code. | |
1568 | ||
1569 | B<WARNING> This call should only be used on commands that do not require | |
1570 | data connections. Misuse of this method can hang the connection. | |
1571 | ||
1572 | =back | |
1573 | ||
1574 | =head1 THE dataconn CLASS | |
1575 | ||
1576 | Some of the methods defined in C<Net::FTP> return an object which will | |
1577 | be derived from this class.The dataconn class itself is derived from | |
1578 | the C<IO::Socket::INET> class, so any normal IO operations can be performed. | |
1579 | However the following methods are defined in the dataconn class and IO should | |
1580 | be performed using these. | |
1581 | ||
1582 | =over 4 | |
1583 | ||
1584 | =item read ( BUFFER, SIZE [, TIMEOUT ] ) | |
1585 | ||
1586 | Read C<SIZE> bytes of data from the server and place it into C<BUFFER>, also | |
1587 | performing any <CRLF> translation necessary. C<TIMEOUT> is optional, if not | |
1588 | given, the timeout value from the command connection will be used. | |
1589 | ||
1590 | Returns the number of bytes read before any <CRLF> translation. | |
1591 | ||
1592 | =item write ( BUFFER, SIZE [, TIMEOUT ] ) | |
1593 | ||
1594 | Write C<SIZE> bytes of data from C<BUFFER> to the server, also | |
1595 | performing any <CRLF> translation necessary. C<TIMEOUT> is optional, if not | |
1596 | given, the timeout value from the command connection will be used. | |
1597 | ||
1598 | Returns the number of bytes written before any <CRLF> translation. | |
1599 | ||
1600 | =item bytes_read () | |
1601 | ||
1602 | Returns the number of bytes read so far. | |
1603 | ||
1604 | =item abort () | |
1605 | ||
1606 | Abort the current data transfer. | |
1607 | ||
1608 | =item close () | |
1609 | ||
1610 | Close the data connection and get a response from the FTP server. Returns | |
1611 | I<true> if the connection was closed successfully and the first digit of | |
1612 | the response from the server was a '2'. | |
1613 | ||
1614 | =back | |
1615 | ||
1616 | =head1 UNIMPLEMENTED | |
1617 | ||
1618 | The following RFC959 commands have not been implemented: | |
1619 | ||
1620 | =over 4 | |
1621 | ||
1622 | =item B<ALLO> | |
1623 | ||
1624 | Allocates storage for the file to be transferred. | |
1625 | ||
1626 | =item B<SMNT> | |
1627 | ||
1628 | Mount a different file system structure without changing login or | |
1629 | accounting information. | |
1630 | ||
1631 | =item B<HELP> | |
1632 | ||
1633 | Ask the server for "helpful information" (that's what the RFC says) on | |
1634 | the commands it accepts. | |
1635 | ||
1636 | =item B<MODE> | |
1637 | ||
1638 | Specifies transfer mode (stream, block or compressed) for file to be | |
1639 | transferred. | |
1640 | ||
1641 | =item B<SYST> | |
1642 | ||
1643 | Request remote server system identification. | |
1644 | ||
1645 | =item B<STAT> | |
1646 | ||
1647 | Request remote server status. | |
1648 | ||
1649 | =item B<STRU> | |
1650 | ||
1651 | Specifies file structure for file to be transferred. | |
1652 | ||
1653 | =item B<REIN> | |
1654 | ||
1655 | Reinitialize the connection, flushing all I/O and account information. | |
1656 | ||
1657 | =back | |
1658 | ||
1659 | =head1 REPORTING BUGS | |
1660 | ||
1661 | When reporting bugs/problems please include as much information as possible. | |
1662 | It may be difficult for me to reproduce the problem as almost every setup | |
1663 | is different. | |
1664 | ||
1665 | A small script which yields the problem will probably be of help. It would | |
1666 | also be useful if this script was run with the extra options C<Debug => 1> | |
1667 | passed to the constructor, and the output sent with the bug report. If you | |
1668 | cannot include a small script then please include a Debug trace from a | |
1669 | run of your program which does yield the problem. | |
1670 | ||
1671 | =head1 AUTHOR | |
1672 | ||
1673 | Graham Barr <gbarr@pobox.com> | |
1674 | ||
1675 | =head1 SEE ALSO | |
1676 | ||
1677 | L<Net::Netrc> | |
1678 | L<Net::Cmd> | |
1679 | ||
1680 | ftp(1), ftpd(8), RFC 959 | |
1681 | http://www.cis.ohio-state.edu/htbin/rfc/rfc959.html | |
1682 | ||
1683 | =head1 USE EXAMPLES | |
1684 | ||
1685 | For an example of the use of Net::FTP see | |
1686 | ||
1687 | =over 4 | |
1688 | ||
1689 | =item http://www.csh.rit.edu/~adam/Progs/autoftp-2.0.tar.gz | |
1690 | ||
1691 | C<autoftp> is a program that can retrieve, send, or list files via | |
1692 | the FTP protocol in a non-interactive manner. | |
1693 | ||
1694 | =back | |
1695 | ||
1696 | =head1 CREDITS | |
1697 | ||
1698 | Henry Gabryjelski <henryg@WPI.EDU> - for the suggestion of creating directories | |
1699 | recursively. | |
1700 | ||
1701 | Nathan Torkington <gnat@frii.com> - for some input on the documentation. | |
1702 | ||
1703 | Roderick Schertler <roderick@gate.net> - for various inputs | |
1704 | ||
1705 | =head1 COPYRIGHT | |
1706 | ||
1707 | Copyright (c) 1995-1998 Graham Barr. All rights reserved. | |
1708 | This program is free software; you can redistribute it and/or modify it | |
1709 | under the same terms as Perl itself. | |
1710 | ||
1711 | =for html <hr> | |
1712 | ||
1713 | I<$Id: //depot/libnet/Net/FTP.pm#68 $> | |
1714 | ||
1715 | =cut |