package PublicInbox::POP3;
use v5.12;
use parent qw(PublicInbox::DS);
-use PublicInbox::Syscall qw(EPOLLIN EPOLLONESHOT);
use PublicInbox::GitAsyncCat;
use PublicInbox::DS qw(now);
use Errno qw(EAGAIN);
printf { $self->{pop3d}->{out} } $fmt."\n", @args;
}
-sub zflush {} # noop
-
-sub requeue_once ($) {
- 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 $new_size == 1;
-}
-
-sub long_step {
- my ($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}:
- # 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 long_response ($$;@) {
- my ($self, $cb, @args) = @_; # cb returns true if more, false if done
- my $sock = $self->{sock} or return;
- # make sure we disable reading during a long response,
- # clients should not be sending us stuff and making us do more
- # work while we are stream a response to them
- $self->{long_cb} = [ fileno($sock), $cb, now(), @args ];
- long_step($self); # kick off!
- undef;
-}
-
-sub _greet ($) {
+sub do_greet {
my ($self) = @_;
my $s = $self->{salt} = sprintf('%x.%x', int(rand(0x7fffffff)), time);
$self->write("+OK POP3 server ready <$s\@public-inbox>\r\n");
}
-sub new ($$$) {
- my ($class, $sock, $pop3d) = @_;
- my $self = bless { pop3d => $pop3d }, __PACKAGE__;
- 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);
- }
- $self;
+sub new {
+ my ($cls, $sock, $pop3d) = @_;
+ (bless { pop3d => $pop3d }, $cls)->greet($sock)
}
# POP user is $UUID1@$NEWSGROUP.$SLICE
# RFC 2449
sub cmd_capa {
my ($self) = @_;
+ my $STLS = !$self->{ibx} && !$self->{sock}->can('stop_SSL') &&
+ $self->{pop3d}->{accept_tls} ? "\nSTLS\r" : '';
$self->{expire} = ''; # "EXPIRE 0" allows clients to avoid DELE commands
- \<<EOM;
+ <<EOM;
+OK Capability list follows\r
TOP\r
USER\r
PIPELINING\r
UIDL\r
EXPIRE 0\r
-RESP-CODES\r
+RESP-CODES\r$STLS
.\r
EOM
}