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| | # Copyright (C) 2020 all contributors <meta@public-inbox.org>
# License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
# represents an IMAPD (currently a singleton),
# see script/public-inbox-imapd for how it is used
package PublicInbox::IMAPD;
use strict;
use PublicInbox::Config;
use PublicInbox::ConfigIter;
use PublicInbox::InboxIdle;
use PublicInbox::IMAP;
use PublicInbox::DummyInbox;
my $dummy = bless { uidvalidity => 0 }, 'PublicInbox::DummyInbox';
sub new {
my ($class) = @_;
bless {
mailboxes => {},
err => \*STDERR,
out => \*STDOUT,
# accept_tls => { SSL_server => 1, ..., SSL_reuse_ctx => ... }
# pi_config => PublicInbox::Config
# idler => PublicInbox::InboxIdle
}, $class;
}
sub imapd_refresh_ibx { # pi_config->each_inbox cb
my ($ibx, $imapd) = @_;
my $ngname = $ibx->{newsgroup} or return;
if (ref $ngname) {
warn 'multiple newsgroups not supported: '.
join(', ', @$ngname). "\n";
return;
} elsif ($ngname =~ m![^a-z0-9/_\.\-\~\@\+\=:]! ||
$ngname =~ /\.[0-9]+\z/) {
warn "mailbox name invalid: newsgroup=`$ngname'\n";
return;
}
$ibx->over or return;
$ibx->{over} = undef;
my $mm = $ibx->mm or return;
$ibx->{mm} = undef;
# RFC 3501 2.3.1.1 - "A good UIDVALIDITY value to use in
# this case is a 32-bit representation of the creation
# date/time of the mailbox"
defined($ibx->{uidvalidity} = $mm->created_at) or return;
PublicInbox::IMAP::ensure_slices_exist($imapd, $ibx, $mm->max // 0);
# preload to avoid fragmentation:
$ibx->description;
$ibx->base_url;
# ensure dummies are selectable
my $dummies = $imapd->{dummies};
do {
$dummies->{$ngname} = $dummy;
} while ($ngname =~ s/\.[^\.]+\z//);
}
sub imapd_refresh_finalize {
my ($imapd, $pi_config) = @_;
my $mailboxes;
if (my $next = delete $imapd->{imapd_next}) {
$imapd->{mailboxes} = delete $next->{mailboxes};
$mailboxes = delete $next->{dummies};
} else {
$mailboxes = delete $imapd->{dummies};
}
%$mailboxes = (%$mailboxes, %{$imapd->{mailboxes}});
$imapd->{mailboxes} = $mailboxes;
$imapd->{inboxlist} = [
map {
my $no = $mailboxes->{$_} == $dummy ? '' : 'No';
my $u = $_; # capitalize "INBOX" for user-familiarity
$u =~ s/\Ainbox(\.|\z)/INBOX$1/i;
qq[* LIST (\\Has${no}Children) "." $u\r\n]
} keys %$mailboxes
];
$imapd->{pi_config} = $pi_config;
if (my $idler = $imapd->{idler}) {
$idler->refresh($pi_config);
}
}
sub imapd_refresh_step { # pi_config->iterate_start cb
my ($pi_config, $section, $imapd) = @_;
if (defined($section)) {
return if $section !~ m!\Apublicinbox\.([^/]+)\z!;
my $ibx = $pi_config->lookup_name($1) or return;
imapd_refresh_ibx($ibx, $imapd->{imapd_next});
} else { # undef == "EOF"
imapd_refresh_finalize($imapd, $pi_config);
}
}
sub refresh_groups {
my ($self, $sig) = @_;
my $pi_config = PublicInbox::Config->new;
if ($sig) { # SIGHUP is handled through the event loop
$self->{imapd_next} = { dummies => {}, mailboxes => {} };
my $iter = PublicInbox::ConfigIter->new($pi_config,
\&imapd_refresh_step, $self);
$iter->event_step;
} else { # initial start is synchronous
$self->{dummies} = {};
$pi_config->each_inbox(\&imapd_refresh_ibx, $self);
imapd_refresh_finalize($self, $pi_config);
}
}
sub idler_start {
$_[0]->{idler} //= PublicInbox::InboxIdle->new($_[0]->{pi_config});
}
1;
|