-# Copyright (C) 2020-2021 all contributors <meta@public-inbox.org>
+# Copyright (C) all contributors <meta@public-inbox.org>
# License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
#
# Each instance of this represents an IMAP client connected to
use PublicInbox::Eml;
use PublicInbox::EmlContentFoo qw(parse_content_disposition);
use PublicInbox::DS qw(now);
-use PublicInbox::Syscall qw(EPOLLIN EPOLLONESHOT);
use PublicInbox::GitAsyncCat;
use Text::ParseWords qw(parse_line);
use Errno qw(EAGAIN);
my $valid_range = '[0-9]+|[0-9]+:[0-9]+|[0-9]+:\*';
$valid_range = qr/\A(?:$valid_range)(?:,(?:$valid_range))*\z/;
-# RFC 3501 5.4. Autologout Timer needs to be >= 30min
-$PublicInbox::DS::EXPTIME = 60 * 30;
-
-sub greet ($) {
+sub do_greet {
my ($self) = @_;
my $capa = capa($self);
$self->write(\"* OK [$capa] public-inbox-imapd ready\r\n");
}
-sub new ($$$) {
- my ($class, $sock, $imapd) = @_;
- my $self = bless { imapd => $imapd }, 'PublicInbox::IMAP_preauth';
- my $ev = EPOLLIN;
- my $wbuf;
- if ($sock->can('accept_SSL') && !$sock->accept_SSL) {
- return CORE::close($sock) if $! != EAGAIN;
- $ev = PublicInbox::TLS::epollbit() or return CORE::close($sock);
- $wbuf = [ \&PublicInbox::DS::accept_tls_step, \&greet ];
- }
- $self->SUPER::new($sock, $ev | EPOLLONESHOT);
- if ($wbuf) {
- $self->{wbuf} = $wbuf;
- } else {
- greet($self);
- }
- $self->update_idle_time;
- $self;
+sub new {
+ my (undef, $sock, $imapd) = @_;
+ (bless { imapd => $imapd }, 'PublicInbox::IMAP_preauth')->greet($sock)
}
sub logged_in { 1 }
}
}
-# called every X minute(s) or so by PublicInbox::DS::later
-my $IDLERS = {};
-my $idle_timer;
+# called every minute or so by PublicInbox::DS::later
+my $IDLERS; # fileno($obj->{sock}) => PublicInbox::IMAP
sub idle_tick_all {
my $old = $IDLERS;
- $IDLERS = {};
+ $IDLERS = undef;
for my $i (values %$old) {
next if ($i->{wbuf} || !exists($i->{-idle_tag}));
- $i->update_idle_time or next;
$IDLERS->{fileno($i->{sock})} = $i;
$i->write(\"* OK Still here\r\n");
}
- $idle_timer = scalar keys %$IDLERS ?
- PublicInbox::DS::later(\&idle_tick_all) : undef;
+ $IDLERS and
+ PublicInbox::DS::add_uniq_timer('idle', 60, \&idle_tick_all);
}
sub cmd_idle ($$) {
$ibx->subscribe_unlock($fd, $self);
$self->{imapd}->idler_start;
}
- $idle_timer //= PublicInbox::DS::later(\&idle_tick_all);
+ PublicInbox::DS::add_uniq_timer('idle', 60, \&idle_tick_all);
$IDLERS->{$fd} = $self;
\"+ idling\r\n"
}
die "BUG: unexpected dummy mailbox: $mailbox\n";
$uid_base = $1 * UID_SLICE;
- # ->num_highwater caches for writers, so use ->meta_accessor
- $uidmax = $ibx->mm->meta_accessor('num_highwater') // 0;
+ $uidmax = $ibx->mm->num_highwater // 0;
if ($examine) {
$self->{uid_base} = $uid_base;
$self->{ibx} = $ibx;
$self->{uo2m} = uo2m_ary_new($self, \$exists);
} else {
- $exists = $over->imap_exists;
+ my $uid_end = $uid_base + UID_SLICE;
+ $exists = $over->imap_exists($uid_base, $uid_end);
}
ensure_slices_exist($self->{imapd}, $ibx, $over->max);
} else {
join('', @hold);
}
-sub requeue_once ($) {
- my ($self) = @_;
- # COMPRESS users all share the same DEFLATE context.
- # Flush it here to ensure clients don't see
- # each other's data
- $self->zflush;
-
- # no recursion, schedule another call ASAP,
- # but only after all pending writes are done.
- # autovivify wbuf:
- my $new_size = push(@{$self->{wbuf}}, \&long_step);
-
- # wbuf may be populated by $cb, no need to rearm if so:
- $self->requeue if $new_size == 1;
-}
-
sub fetch_run_ops {
my ($self, $smsg, $bref, $ops, $partial) = @_;
my $uid = $smsg->{num};
# it's possible to have TOCTOU if an admin runs
# public-inbox-(edit|purge), just move onto the next message
warn "E: $smsg->{blob} missing in $ibx->{inboxdir}\n";
- return requeue_once($self);
+ return $self->requeue_once;
} else {
$smsg->{blob} eq $oid or die "BUG: $smsg->{blob} != $oid";
}
\&fetch_blob_cb, $fetch_arg);
}
fetch_run_ops($self, $smsg, $bref, $ops, $partial);
- $pre ? $self->zflush : requeue_once($self);
+ $pre ? $self->zflush : $self->requeue_once;
}
sub emit_rfc822 {
# prepares an index for BODY[$SECTION_IDX] fetches
sub eml_body_idx ($$) {
my ($eml, $section_idx) = @_;
- my $idx = $eml->{imap_all_parts} //= do {
+ my $idx = $eml->{imap_all_parts} // do {
my $all = {};
$eml->each_part(\&eml_index_offs_i, $all, 0, 1);
# top-level of multipart, BODY[0] not allowed (nz-number)
delete $all->{0};
- $all;
+ $eml->{imap_all_parts} = $all;
};
$idx->{$section_idx};
}
my $range_info = range_step($self, \$range_csv);
return "$tag $range_info\r\n" if !ref($range_info);
uo2m_hibernate($self) if $cb == \&fetch_blob; # slow, save RAM
- long_response($self, $cb, $tag, [], $range_info, $ops, $partial);
+ $self->long_response($cb, $tag, [], $range_info, $ops, $partial);
}
sub cmd_fetch ($$$$;@) {
my $range_info = range_step($self, \$range_csv);
return "$tag $range_info\r\n" if !ref($range_info);
uo2m_hibernate($self) if $cb == \&fetch_blob; # slow, save RAM
- long_response($self, $cb, $tag, [], $range_info, $ops, $partial);
+ $self->long_response($cb, $tag, [], $range_info, $ops, $partial);
}
sub msn_convert ($$) {
my ($sql, $range_info) = delete @$q{qw(sql range_info)};
if (!scalar(keys %$q)) { # overview.sqlite3
$self->msg_more('* SEARCH');
- long_response($self, \&search_uid_range,
+ $self->long_response(\&search_uid_range,
$tag, $sql, $range_info, $want_msn);
} elsif ($q = $q->{xap}) {
my $srch = $self->{ibx}->isrch or
search_common($self, $tag, $query, 1);
}
-sub args_ok ($$) { # duplicated from PublicInbox::NNTP
- my ($cb, $argc) = @_;
- my $tot = prototype $cb;
- my ($nreq, undef) = split(';', $tot);
- $nreq = ($nreq =~ tr/$//) - 1;
- $tot = ($tot =~ tr/$//) - 1;
- ($argc <= $tot && $argc >= $nreq);
-}
-
# returns 1 if we can continue, 0 if not due to buffered writes or disconnect
sub process_line ($$) {
my ($self, $l) = @_;
$self->write($res);
}
-sub long_step {
- my ($self) = @_;
- # wbuf is unset or empty, here; {long} may add to it
- my ($fd, $cb, $t0, @args) = @{$self->{long_cb}};
- my $more = eval { $cb->($self, @args) };
- if ($@ || !$self->{sock}) { # something bad happened...
- delete $self->{long_cb};
- my $elapsed = now() - $t0;
- if ($@) {
- err($self,
- "%s during long response[$fd] - %0.6f",
- $@, $elapsed);
- }
- out($self, " deferred[$fd] aborted - %0.6f", $elapsed);
- $self->close;
- } elsif ($more) { # $self->{wbuf}:
- $self->update_idle_time;
-
- # control passed to ibx_async_cat if $more == \undef
- requeue_once($self) if !ref($more);
- } else { # all done!
- delete $self->{long_cb};
- my $elapsed = now() - $t0;
- my $fd = fileno($self->{sock});
- out($self, " deferred[$fd] done - %0.6f", $elapsed);
- my $wbuf = $self->{wbuf}; # do NOT autovivify
-
- $self->requeue unless $wbuf && @$wbuf;
- }
-}
-
sub err ($$;@) {
my ($self, $fmt, @args) = @_;
printf { $self->{imapd}->{err} } $fmt."\n", @args;
printf { $self->{imapd}->{out} } $fmt."\n", @args;
}
-sub long_response ($$;@) {
- my ($self, $cb, @args) = @_; # cb returns true if more, false if done
-
- my $sock = $self->{sock} or return;
- # make sure we disable reading during a long response,
- # clients should not be sending us stuff and making us do more
- # work while we are stream a response to them
- $self->{long_cb} = [ fileno($sock), $cb, now(), @args ];
- long_step($self); # kick off!
- undef;
-}
-
# callback used by PublicInbox::DS for any (e)poll (in/out/hup/err)
sub event_step {
my ($self) = @_;
return unless $self->flush_write && $self->{sock} && !$self->{long_cb};
- $self->update_idle_time;
# only read more requests if we've drained the write buffer,
# otherwise we can be buffering infinitely w/o backpressure
return $self->close if $r < 0;
$self->rbuf_idle($rbuf);
- $self->update_idle_time;
# maybe there's more pipelined data, or we'll have
# to register it for socket-readiness notifications
sub compressed { undef }
-sub zflush {} # overridden by IMAPdeflate
-
# RFC 4978
sub cmd_compress ($$$) {
my ($self, $tag, $alg) = @_;
undef;
}
-# for graceful shutdown in PublicInbox::Daemon:
-sub busy {
- my ($self, $now) = @_;
+sub busy { # for graceful shutdown in PublicInbox::Daemon:
+ my ($self) = @_;
if (defined($self->{-idle_tag})) {
$self->write(\"* BYE server shutting down\r\n");
return; # not busy anymore
}
- ($self->{rbuf} || $self->{wbuf} || $self->not_idle_long($now));
+ defined($self->{rbuf}) || defined($self->{wbuf}) ||
+ !$self->write(\"* BYE server shutting down\r\n");
}
sub close {