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1 | # Net::POP3.pm |
2 | # |
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3 | # Copyright (c) 1995-2004 Graham Barr <gbarr@pobox.com>. All rights reserved. |
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4 | # This program is free software; you can redistribute it and/or |
5 | # modify it under the same terms as Perl itself. |
6 | |
7 | package Net::POP3; |
8 | |
9 | use strict; |
10 | use IO::Socket; |
11 | use vars qw(@ISA $VERSION $debug); |
12 | use Net::Cmd; |
13 | use Carp; |
14 | use Net::Config; |
15 | |
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16 | $VERSION = "2.27"; |
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17 | |
18 | @ISA = qw(Net::Cmd IO::Socket::INET); |
19 | |
20 | sub new |
21 | { |
22 | my $self = shift; |
23 | my $type = ref($self) || $self; |
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24 | my ($host,%arg); |
25 | if (@_ % 2) { |
26 | $host = shift ; |
27 | %arg = @_; |
28 | } else { |
29 | %arg = @_; |
30 | $host=delete $arg{Host}; |
31 | } |
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32 | my $hosts = defined $host ? [ $host ] : $NetConfig{pop3_hosts}; |
33 | my $obj; |
34 | my @localport = exists $arg{ResvPort} ? ( LocalPort => $arg{ResvPort} ): (); |
35 | |
36 | my $h; |
37 | foreach $h (@{$hosts}) |
38 | { |
39 | $obj = $type->SUPER::new(PeerAddr => ($host = $h), |
40 | PeerPort => $arg{Port} || 'pop3(110)', |
41 | Proto => 'tcp', |
42 | @localport, |
43 | Timeout => defined $arg{Timeout} |
44 | ? $arg{Timeout} |
45 | : 120 |
46 | ) and last; |
47 | } |
48 | |
49 | return undef |
50 | unless defined $obj; |
51 | |
52 | ${*$obj}{'net_pop3_host'} = $host; |
53 | |
54 | $obj->autoflush(1); |
55 | $obj->debug(exists $arg{Debug} ? $arg{Debug} : undef); |
56 | |
57 | unless ($obj->response() == CMD_OK) |
58 | { |
59 | $obj->close(); |
60 | return undef; |
61 | } |
62 | |
63 | ${*$obj}{'net_pop3_banner'} = $obj->message; |
64 | |
65 | $obj; |
66 | } |
67 | |
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68 | sub host { |
69 | my $me = shift; |
70 | ${*$me}{'net_pop3_host'}; |
71 | } |
72 | |
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73 | ## |
74 | ## We don't want people sending me their passwords when they report problems |
75 | ## now do we :-) |
76 | ## |
77 | |
78 | sub debug_text { $_[2] =~ /^(pass|rpop)/i ? "$1 ....\n" : $_[2]; } |
79 | |
80 | sub login |
81 | { |
82 | @_ >= 1 && @_ <= 3 or croak 'usage: $pop3->login( USER, PASS )'; |
83 | my($me,$user,$pass) = @_; |
84 | |
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85 | if (@_ <= 2) { |
86 | ($user, $pass) = $me->_lookup_credentials($user); |
87 | } |
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88 | |
89 | $me->user($user) and |
90 | $me->pass($pass); |
91 | } |
92 | |
93 | sub apop |
94 | { |
95 | @_ >= 1 && @_ <= 3 or croak 'usage: $pop3->apop( USER, PASS )'; |
96 | my($me,$user,$pass) = @_; |
97 | my $banner; |
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98 | my $md; |
99 | |
100 | if (eval { local $SIG{__DIE__}; require Digest::MD5 }) { |
101 | $md = Digest::MD5->new(); |
102 | } elsif (eval { local $SIG{__DIE__}; require MD5 }) { |
103 | $md = MD5->new(); |
104 | } else { |
105 | carp "You need to install Digest::MD5 or MD5 to use the APOP command"; |
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106 | return undef; |
12df23ee |
107 | } |
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108 | |
109 | return undef |
110 | unless ( $banner = (${*$me}{'net_pop3_banner'} =~ /(<.*>)/)[0] ); |
111 | |
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112 | if (@_ <= 2) { |
113 | ($user, $pass) = $me->_lookup_credentials($user); |
114 | } |
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115 | |
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116 | $md->add($banner,$pass); |
117 | |
118 | return undef |
119 | unless($me->_APOP($user,$md->hexdigest)); |
120 | |
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121 | $me->_get_mailbox_count(); |
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122 | } |
123 | |
124 | sub user |
125 | { |
126 | @_ == 2 or croak 'usage: $pop3->user( USER )'; |
127 | $_[0]->_USER($_[1]) ? 1 : undef; |
128 | } |
129 | |
130 | sub pass |
131 | { |
132 | @_ == 2 or croak 'usage: $pop3->pass( PASS )'; |
133 | |
134 | my($me,$pass) = @_; |
135 | |
136 | return undef |
137 | unless($me->_PASS($pass)); |
138 | |
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139 | $me->_get_mailbox_count(); |
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140 | } |
141 | |
142 | sub reset |
143 | { |
144 | @_ == 1 or croak 'usage: $obj->reset()'; |
145 | |
146 | my $me = shift; |
147 | |
148 | return 0 |
149 | unless($me->_RSET); |
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150 | |
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151 | if(defined ${*$me}{'net_pop3_mail'}) |
152 | { |
153 | local $_; |
154 | foreach (@{${*$me}{'net_pop3_mail'}}) |
155 | { |
156 | delete $_->{'net_pop3_deleted'}; |
157 | } |
158 | } |
159 | } |
160 | |
161 | sub last |
162 | { |
163 | @_ == 1 or croak 'usage: $obj->last()'; |
164 | |
165 | return undef |
166 | unless $_[0]->_LAST && $_[0]->message =~ /(\d+)/; |
167 | |
168 | return $1; |
169 | } |
170 | |
171 | sub top |
172 | { |
173 | @_ == 2 || @_ == 3 or croak 'usage: $pop3->top( MSGNUM [, NUMLINES ])'; |
174 | my $me = shift; |
175 | |
176 | return undef |
177 | unless $me->_TOP($_[0], $_[1] || 0); |
178 | |
179 | $me->read_until_dot; |
180 | } |
181 | |
182 | sub popstat |
183 | { |
184 | @_ == 1 or croak 'usage: $pop3->popstat()'; |
185 | my $me = shift; |
186 | |
187 | return () |
188 | unless $me->_STAT && $me->message =~ /(\d+)\D+(\d+)/; |
189 | |
190 | ($1 || 0, $2 || 0); |
191 | } |
192 | |
193 | sub list |
194 | { |
195 | @_ == 1 || @_ == 2 or croak 'usage: $pop3->list( [ MSGNUM ] )'; |
196 | my $me = shift; |
197 | |
198 | return undef |
199 | unless $me->_LIST(@_); |
200 | |
201 | if(@_) |
202 | { |
203 | $me->message =~ /\d+\D+(\d+)/; |
204 | return $1 || undef; |
205 | } |
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206 | |
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207 | my $info = $me->read_until_dot |
208 | or return undef; |
209 | |
210 | my %hash = map { (/(\d+)\D+(\d+)/) } @$info; |
211 | |
212 | return \%hash; |
213 | } |
214 | |
215 | sub get |
216 | { |
217 | @_ == 2 or @_ == 3 or croak 'usage: $pop3->get( MSGNUM [, FH ])'; |
218 | my $me = shift; |
219 | |
220 | return undef |
221 | unless $me->_RETR(shift); |
222 | |
223 | $me->read_until_dot(@_); |
224 | } |
225 | |
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226 | sub getfh |
227 | { |
228 | @_ == 2 or croak 'usage: $pop3->getfh( MSGNUM )'; |
229 | my $me = shift; |
230 | |
231 | return unless $me->_RETR(shift); |
232 | return $me->tied_fh; |
233 | } |
234 | |
235 | |
236 | |
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237 | sub delete |
238 | { |
239 | @_ == 2 or croak 'usage: $pop3->delete( MSGNUM )'; |
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240 | my $me = shift; |
241 | return 0 unless $me->_DELE(@_); |
242 | ${*$me}{'net_pop3_deleted'} = 1; |
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243 | } |
244 | |
245 | sub uidl |
246 | { |
247 | @_ == 1 || @_ == 2 or croak 'usage: $pop3->uidl( [ MSGNUM ] )'; |
248 | my $me = shift; |
249 | my $uidl; |
250 | |
251 | $me->_UIDL(@_) or |
252 | return undef; |
253 | if(@_) |
254 | { |
255 | $uidl = ($me->message =~ /\d+\s+([\041-\176]+)/)[0]; |
256 | } |
257 | else |
258 | { |
259 | my $ref = $me->read_until_dot |
260 | or return undef; |
261 | my $ln; |
262 | $uidl = {}; |
263 | foreach $ln (@$ref) { |
264 | my($msg,$uid) = $ln =~ /^\s*(\d+)\s+([\041-\176]+)/; |
265 | $uidl->{$msg} = $uid; |
266 | } |
267 | } |
268 | return $uidl; |
269 | } |
270 | |
271 | sub ping |
272 | { |
273 | @_ == 2 or croak 'usage: $pop3->ping( USER )'; |
274 | my $me = shift; |
275 | |
276 | return () unless $me->_PING(@_) && $me->message =~ /(\d+)\D+(\d+)/; |
277 | |
278 | ($1 || 0, $2 || 0); |
279 | } |
280 | |
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281 | sub _lookup_credentials |
282 | { |
283 | my ($me, $user) = @_; |
284 | |
285 | require Net::Netrc; |
286 | |
287 | $user ||= eval { local $SIG{__DIE__}; (getpwuid($>))[0] } || |
288 | $ENV{NAME} || $ENV{USER} || $ENV{LOGNAME}; |
289 | |
290 | my $m = Net::Netrc->lookup(${*$me}{'net_pop3_host'},$user); |
291 | $m ||= Net::Netrc->lookup(${*$me}{'net_pop3_host'}); |
292 | |
293 | my $pass = $m ? $m->password || "" |
294 | : ""; |
295 | |
296 | ($user, $pass); |
297 | } |
298 | |
299 | sub _get_mailbox_count |
300 | { |
301 | my ($me) = @_; |
302 | my $ret = ${*$me}{'net_pop3_count'} = ($me->message =~ /(\d+)\s+message/io) |
303 | ? $1 : ($me->popstat)[0]; |
304 | |
305 | $ret ? $ret : "0E0"; |
306 | } |
307 | |
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308 | |
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309 | sub _STAT { shift->command('STAT')->response() == CMD_OK } |
310 | sub _LIST { shift->command('LIST',@_)->response() == CMD_OK } |
311 | sub _RETR { shift->command('RETR',$_[0])->response() == CMD_OK } |
312 | sub _DELE { shift->command('DELE',$_[0])->response() == CMD_OK } |
313 | sub _NOOP { shift->command('NOOP')->response() == CMD_OK } |
314 | sub _RSET { shift->command('RSET')->response() == CMD_OK } |
315 | sub _QUIT { shift->command('QUIT')->response() == CMD_OK } |
316 | sub _TOP { shift->command('TOP', @_)->response() == CMD_OK } |
317 | sub _UIDL { shift->command('UIDL',@_)->response() == CMD_OK } |
318 | sub _USER { shift->command('USER',$_[0])->response() == CMD_OK } |
319 | sub _PASS { shift->command('PASS',$_[0])->response() == CMD_OK } |
320 | sub _APOP { shift->command('APOP',@_)->response() == CMD_OK } |
321 | sub _PING { shift->command('PING',$_[0])->response() == CMD_OK } |
322 | |
323 | sub _RPOP { shift->command('RPOP',$_[0])->response() == CMD_OK } |
324 | sub _LAST { shift->command('LAST')->response() == CMD_OK } |
325 | |
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326 | sub _CAPA { shift->command('CAPA')->response() == CMD_OK } |
327 | |
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328 | sub quit |
329 | { |
330 | my $me = shift; |
331 | |
332 | $me->_QUIT; |
333 | $me->close; |
334 | } |
335 | |
336 | sub DESTROY |
337 | { |
338 | my $me = shift; |
339 | |
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340 | if(defined fileno($me) and ${*$me}{'net_pop3_deleted'}) |
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341 | { |
342 | $me->reset; |
343 | $me->quit; |
344 | } |
345 | } |
346 | |
347 | ## |
348 | ## POP3 has weird responses, so we emulate them to look the same :-) |
349 | ## |
350 | |
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351 | sub response { |
352 | my $cmd = shift; |
353 | my $str = $cmd->getline() or return undef; |
354 | my $code = "500"; |
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355 | |
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356 | $cmd->debug_print(0, $str) |
357 | if ($cmd->debug); |
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358 | |
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359 | if ($str =~ s/^\+OK\s*//io) { |
360 | $code = "200"; |
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361 | } |
f92f3fcb |
362 | elsif ($str =~ s/^\+\s*//io) { |
363 | $code = "300"; |
364 | } |
365 | else { |
366 | $str =~ s/^-ERR\s*//io; |
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367 | } |
368 | |
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369 | ${*$cmd}{'net_cmd_resp'} = [$str]; |
370 | ${*$cmd}{'net_cmd_code'} = $code; |
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371 | |
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372 | substr($code, 0, 1); |
373 | } |
374 | |
375 | |
376 | sub capa { |
377 | my $this = shift; |
378 | my ($capa, %capabilities); |
379 | |
380 | # Fake a capability here |
381 | $capabilities{APOP} = '' if ($this->banner() =~ /<.*>/); |
382 | |
383 | return \%capabilities unless $this->_CAPA(); |
384 | |
385 | $capa = $this->read_until_dot(); |
386 | %capabilities = map { /^\s*(\S+)\s*(.*)/ } @$capa; |
387 | $capabilities{APOP} = '' if ($this->banner() =~ /<.*>/); |
388 | |
389 | return ${*$this}{'net_pop3e_capabilities'} = \%capabilities; |
390 | } |
391 | |
392 | sub capabilities { |
393 | my $this = shift; |
394 | |
395 | ${*$this}{'net_pop3e_capabilities'} || $this->capa; |
396 | } |
397 | |
398 | sub auth { |
399 | my ($self, $username, $password) = @_; |
400 | |
401 | eval { |
402 | require MIME::Base64; |
403 | require Authen::SASL; |
404 | } or return $self->set_error(500,["Need MIME::Base64 and Authen::SASL todo auth"]); |
405 | |
406 | my $capa = $self->capa; |
407 | my $mechanisms = $capa->{SASL} || 'CRAM-MD5'; |
408 | |
409 | my $sasl; |
410 | |
411 | if (ref($username) and UNIVERSAL::isa($username,'Authen::SASL')) { |
412 | $sasl = $username; |
413 | $sasl->mechanism($mechanisms); |
414 | } |
415 | else { |
416 | die "auth(username, password)" if not length $username; |
417 | $sasl = Authen::SASL->new(mechanism=> $mechanisms, |
418 | callback => { user => $username, |
419 | pass => $password, |
420 | authname => $username, |
421 | }); |
422 | } |
423 | |
424 | # We should probably allow the user to pass the host, but I don't |
425 | # currently know and SASL mechanisms that are used by smtp that need it |
426 | my $client = $sasl->client_new('pop3',${*$self}{'net_pop3_host'},0); |
427 | my $str = $client->client_start; |
428 | |
429 | # We dont support sasl mechanisms that encrypt the socket traffic. |
430 | # todo that we would really need to change the ISA hierarchy |
431 | # so we dont inherit from IO::Socket, but instead hold it in an attribute |
432 | |
433 | my @cmd = ("AUTH", $client->mechanism); |
434 | my $code; |
435 | |
436 | push @cmd, MIME::Base64::encode_base64($str,'') |
437 | if defined $str and length $str; |
438 | |
439 | while (($code = $self->command(@cmd)->response()) == CMD_MORE) { |
440 | @cmd = (MIME::Base64::encode_base64( |
441 | $client->client_step( |
442 | MIME::Base64::decode_base64( |
443 | ($self->message)[0] |
444 | ) |
445 | ), '' |
446 | )); |
447 | } |
448 | |
449 | $code == CMD_OK; |
450 | } |
451 | |
452 | sub banner { |
453 | my $this = shift; |
454 | |
455 | return ${*$this}{'net_pop3_banner'}; |
406c51ee |
456 | } |
457 | |
458 | 1; |
459 | |
460 | __END__ |
461 | |
462 | =head1 NAME |
463 | |
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464 | Net::POP3 - Post Office Protocol 3 Client class (RFC1939) |
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465 | |
466 | =head1 SYNOPSIS |
467 | |
468 | use Net::POP3; |
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469 | |
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470 | # Constructors |
471 | $pop = Net::POP3->new('pop3host'); |
472 | $pop = Net::POP3->new('pop3host', Timeout => 60); |
473 | |
dea4d7df |
474 | if ($pop->login($username, $password) > 0) { |
475 | my $msgnums = $pop->list; # hashref of msgnum => size |
476 | foreach my $msgnum (keys %$msgnums) { |
477 | my $msg = $pop->get($msgnum); |
478 | print @$msg; |
479 | $pop->delete($msgnum); |
480 | } |
481 | } |
482 | |
483 | $pop->quit; |
484 | |
406c51ee |
485 | =head1 DESCRIPTION |
486 | |
487 | This module implements a client interface to the POP3 protocol, enabling |
488 | a perl5 application to talk to POP3 servers. This documentation assumes |
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489 | that you are familiar with the POP3 protocol described in RFC1939. |
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490 | |
491 | A new Net::POP3 object must be created with the I<new> method. Once |
492 | this has been done, all POP3 commands are accessed via method calls |
493 | on the object. |
494 | |
406c51ee |
495 | =head1 CONSTRUCTOR |
496 | |
497 | =over 4 |
498 | |
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499 | =item new ( [ HOST ] [, OPTIONS ] 0 |
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500 | |
501 | This is the constructor for a new Net::POP3 object. C<HOST> is the |
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502 | name of the remote host to which an POP3 connection is required. |
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503 | |
f92f3fcb |
504 | C<HOST> is optional. If C<HOST> is not given then it may instead be |
505 | passed as the C<Host> option described below. If neither is given then |
506 | the C<POP3_Hosts> specified in C<Net::Config> will be used. |
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507 | |
508 | C<OPTIONS> are passed in a hash like fashion, using key and value pairs. |
509 | Possible options are: |
510 | |
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511 | B<Host> - POP3 host to connect to. It may be a single scalar, as defined for |
512 | the C<PeerAddr> option in L<IO::Socket::INET>, or a reference to |
513 | an array with hosts to try in turn. The L</host> method will return the value |
514 | which was used to connect to the host. |
515 | |
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516 | B<ResvPort> - If given then the socket for the C<Net::POP3> object |
517 | will be bound to the local port given using C<bind> when the socket is |
518 | created. |
519 | |
520 | B<Timeout> - Maximum time, in seconds, to wait for a response from the |
521 | POP3 server (default: 120) |
522 | |
523 | B<Debug> - Enable debugging information |
524 | |
525 | =back |
526 | |
527 | =head1 METHODS |
528 | |
529 | Unless otherwise stated all methods return either a I<true> or I<false> |
530 | value, with I<true> meaning that the operation was a success. When a method |
531 | states that it returns a value, failure will be returned as I<undef> or an |
532 | empty list. |
533 | |
534 | =over 4 |
535 | |
f92f3fcb |
536 | =item auth ( USERNAME, PASSWORD ) |
537 | |
538 | Attempt SASL authentication. |
539 | |
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540 | =item user ( USER ) |
541 | |
542 | Send the USER command. |
543 | |
544 | =item pass ( PASS ) |
545 | |
546 | Send the PASS command. Returns the number of messages in the mailbox. |
547 | |
548 | =item login ( [ USER [, PASS ]] ) |
549 | |
d1be9408 |
550 | Send both the USER and PASS commands. If C<PASS> is not given the |
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551 | C<Net::POP3> uses C<Net::Netrc> to lookup the password using the host |
552 | and username. If the username is not specified then the current user name |
553 | will be used. |
554 | |
555 | Returns the number of messages in the mailbox. However if there are no |
556 | messages on the server the string C<"0E0"> will be returned. This is |
557 | will give a true value in a boolean context, but zero in a numeric context. |
558 | |
559 | If there was an error authenticating the user then I<undef> will be returned. |
560 | |
12df23ee |
561 | =item apop ( [ USER [, PASS ]] ) |
406c51ee |
562 | |
563 | Authenticate with the server identifying as C<USER> with password C<PASS>. |
12df23ee |
564 | Similar to L</login>, but the password is not sent in clear text. |
406c51ee |
565 | |
12df23ee |
566 | To use this method you must have the Digest::MD5 or the MD5 module installed, |
567 | otherwise this method will return I<undef>. |
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568 | |
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569 | =item banner () |
570 | |
571 | Return the sever's connection banner |
572 | |
573 | =item capa () |
574 | |
575 | Return a reference to a hash of the capabilties of the server. APOP |
576 | is added as a pseudo capability. Note that I've been unable to |
577 | find a list of the standard capability values, and some appear to |
578 | be multi-word and some are not. We make an attempt at intelligently |
579 | parsing them, but it may not be correct. |
580 | |
581 | =item capabilities () |
582 | |
583 | Just like capa, but only uses a cache from the last time we asked |
584 | the server, so as to avoid asking more than once. |
585 | |
406c51ee |
586 | =item top ( MSGNUM [, NUMLINES ] ) |
587 | |
588 | Get the header and the first C<NUMLINES> of the body for the message |
589 | C<MSGNUM>. Returns a reference to an array which contains the lines of text |
590 | read from the server. |
591 | |
592 | =item list ( [ MSGNUM ] ) |
593 | |
594 | If called with an argument the C<list> returns the size of the message |
595 | in octets. |
596 | |
597 | If called without arguments a reference to a hash is returned. The |
598 | keys will be the C<MSGNUM>'s of all undeleted messages and the values will |
599 | be their size in octets. |
600 | |
601 | =item get ( MSGNUM [, FH ] ) |
602 | |
603 | Get the message C<MSGNUM> from the remote mailbox. If C<FH> is not given |
604 | then get returns a reference to an array which contains the lines of |
605 | text read from the server. If C<FH> is given then the lines returned |
606 | from the server are printed to the filehandle C<FH>. |
607 | |
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608 | =item getfh ( MSGNUM ) |
609 | |
610 | As per get(), but returns a tied filehandle. Reading from this |
611 | filehandle returns the requested message. The filehandle will return |
612 | EOF at the end of the message and should not be reused. |
613 | |
406c51ee |
614 | =item last () |
615 | |
616 | Returns the highest C<MSGNUM> of all the messages accessed. |
617 | |
618 | =item popstat () |
619 | |
620 | Returns a list of two elements. These are the number of undeleted |
621 | elements and the size of the mbox in octets. |
622 | |
623 | =item ping ( USER ) |
624 | |
625 | Returns a list of two elements. These are the number of new messages |
626 | and the total number of messages for C<USER>. |
627 | |
628 | =item uidl ( [ MSGNUM ] ) |
629 | |
630 | Returns a unique identifier for C<MSGNUM> if given. If C<MSGNUM> is not |
631 | given C<uidl> returns a reference to a hash where the keys are the |
632 | message numbers and the values are the unique identifiers. |
633 | |
634 | =item delete ( MSGNUM ) |
635 | |
636 | Mark message C<MSGNUM> to be deleted from the remote mailbox. All messages |
637 | that are marked to be deleted will be removed from the remote mailbox |
638 | when the server connection closed. |
639 | |
640 | =item reset () |
641 | |
642 | Reset the status of the remote POP3 server. This includes reseting the |
643 | status of all messages to not be deleted. |
644 | |
645 | =item quit () |
646 | |
647 | Quit and close the connection to the remote POP3 server. Any messages marked |
648 | as deleted will be deleted from the remote mailbox. |
649 | |
650 | =back |
651 | |
652 | =head1 NOTES |
653 | |
654 | If a C<Net::POP3> object goes out of scope before C<quit> method is called |
655 | then the C<reset> method will called before the connection is closed. This |
656 | means that any messages marked to be deleted will not be. |
657 | |
658 | =head1 SEE ALSO |
659 | |
12df23ee |
660 | L<Net::Netrc>, |
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661 | L<Net::Cmd> |
662 | |
663 | =head1 AUTHOR |
664 | |
665 | Graham Barr <gbarr@pobox.com> |
666 | |
667 | =head1 COPYRIGHT |
668 | |
f92f3fcb |
669 | Copyright (c) 1995-2003 Graham Barr. All rights reserved. |
406c51ee |
670 | This program is free software; you can redistribute it and/or modify |
671 | it under the same terms as Perl itself. |
672 | |
673 | =cut |