1 # Copyright (C) 2015 all contributors <meta@public-inbox.org>
2 # License: AGPLv3 or later (https://www.gnu.org/licenses/agpl-3.0.txt)
4 # Each instance of this represents a NNTP client socket
5 package PublicInbox::NNTP;
8 use base qw(Danga::Socket);
9 use fields qw(nntpd article rbuf ng long_res);
10 use PublicInbox::Search;
11 use PublicInbox::Msgmap;
13 use PublicInbox::MID qw(mid2path);
15 use Data::Dumper qw(Dumper);
16 use POSIX qw(strftime);
17 use Time::HiRes qw(clock_gettime CLOCK_MONOTONIC);
19 r501 => '501 command syntax error',
20 r221 => '221 Header follows',
21 r224 => '224 Overview information follows (multi-line)',
22 r225 => '225 Headers follow (multi-line)',
23 r430 => '430 No article with that message-id',
24 long_response_limit => 0xffffffff,
27 sub now () { clock_gettime(CLOCK_MONOTONIC) };
29 my @OVERVIEW = qw(Subject From Date Message-ID References);
30 my $OVERVIEW_FMT = join(":\r\n", @OVERVIEW, qw(Bytes Lines)) . ":\r\n";
31 my $LIST_HEADERS = join("\r\n", @OVERVIEW,
32 qw(:bytes :lines Xref To Cc)) . "\r\n";
34 # disable commands with easy DoS potential:
35 # LISTGROUP could get pretty bad, too...
36 my %DISABLED; # = map { $_ => 1 } qw(xover list_overview_fmt newnews xhdr);
38 my $EXPMAP; # fd -> [ idle_time, $self ]
40 our $EXPTIME = 180; # 3 minutes
42 sub update_idle_time ($) {
44 my $tmp = $self->{sock} or return;
46 defined $tmp and $EXPMAP->{$tmp} = [ now(), $self ];
52 my $old = $now - $exp;
53 my $next = $now + $exp;
56 while (my ($fd, $v) = each %$EXPMAP) {
57 my ($idle_time, $nntp) = @$v;
58 if ($idle_time < $old) {
59 $nntp->close; # idempotent
61 my $nexp = $idle_time + $exp;
62 $next = $nexp if ($nexp < $next);
70 $next = 0 if $next < 0;
71 $EXPTIMER = Danga::Socket->AddTimer($next, *expire_old);
74 # noop to kick outselves out of the loop so descriptors
76 Danga::Socket->AddTimer(0, sub {});
81 my ($class, $sock, $nntpd) = @_;
82 my $self = fields::new($class);
83 binmode $sock, ':utf8'; # RFC 3977
84 $self->SUPER::new($sock);
85 $self->{nntpd} = $nntpd;
86 res($self, '201 server ready - post via email');
89 update_idle_time($self);
90 $EXPTIMER ||= Danga::Socket->AddTimer($EXPTIME, *expire_old);
96 my $tot = prototype $cb;
97 my ($nreq, undef) = split(';', $tot);
98 $nreq = ($nreq =~ tr/$//) - 1;
99 $tot = ($tot =~ tr/$//) - 1;
100 ($argc <= $tot && $argc >= $nreq);
103 # returns 1 if we can continue, 0 if not due to buffered writes or disconnect
104 sub process_line ($$) {
106 my ($req, @args) = split(/\s+/, $l);
110 $req = $DISABLED{$req} ? undef : *{'cmd_'.$req}{CODE};
112 return res($self, '500 command not recognized') unless $req;
113 return res($self, r501) unless args_ok($req, scalar @args);
115 my $res = eval { $req->($self, @args) };
117 if ($err && !$self->{closed}) {
118 chomp($l = Dumper(\$l));
119 err($self, 'error from: %s (%s)', $l, $err);
120 $res = '503 program fault - command not performed';
122 return 0 unless defined $res;
127 my ($self, $arg) = @_;
129 return r501 unless $arg eq 'READER';
130 '201 Posting prohibited';
133 sub cmd_slave ($) { '202 slave status noted' }
135 sub cmd_xgtitle ($;$) {
136 my ($self, $wildmat) = @_;
137 more($self, '282 list of groups and descriptions follows');
138 list_newsgroups($self, $wildmat);
142 sub list_overview_fmt ($) {
144 do_more($self, $OVERVIEW_FMT);
147 sub list_headers ($;$) {
149 do_more($self, $LIST_HEADERS);
152 sub list_active ($;$) {
153 my ($self, $wildmat) = @_;
154 wildmat2re($wildmat);
155 foreach my $ng (@{$self->{nntpd}->{grouplist}}) {
156 $ng->{name} =~ $wildmat or next;
157 group_line($self, $ng);
161 sub list_active_times ($;$) {
162 my ($self, $wildmat) = @_;
163 wildmat2re($wildmat);
164 foreach my $ng (@{$self->{nntpd}->{grouplist}}) {
165 $ng->{name} =~ $wildmat or next;
166 my $c = eval { $ng->mm->created_at } || time;
167 more($self, "$ng->{name} $c $ng->{address}");
171 sub list_newsgroups ($;$) {
172 my ($self, $wildmat) = @_;
173 wildmat2re($wildmat);
174 foreach my $ng (@{$self->{nntpd}->{grouplist}}) {
175 $ng->{name} =~ $wildmat or next;
176 my $d = $ng->description;
177 more($self, "$ng->{name} $d");
181 # LIST SUBSCRIPTIONS, DISTRIB.PATS are not supported
182 sub cmd_list ($;$$) {
183 my ($self, @args) = @_;
185 my $arg = shift @args;
186 $arg =~ tr/A-Z./a-z_/;
188 return r501 if $DISABLED{$arg};
194 return r501 unless $arg && args_ok($arg, scalar @args);
195 more($self, '215 information follows');
196 $arg->($self, @args);
198 more($self, '215 list of newsgroups follows');
199 foreach my $ng (@{$self->{nntpd}->{grouplist}}) {
200 group_line($self, $ng);
206 sub cmd_listgroup ($;$) {
207 my ($self, $group) = @_;
208 if (defined $group) {
209 my $res = cmd_group($self, $group);
210 return $res if ($res !~ /\A211 /);
214 $self->{ng} or return '412 no newsgroup selected';
215 long_response($self, 0, long_response_limit, sub {
217 my $nr = $self->{ng}->mm->id_batch($$i, sub {
219 more($self, join("\r\n", @$ary));
222 # -1 to adjust for implicit increment in long_response
223 $$i = $nr ? $$i + $nr - 1 : long_response_limit;
227 sub parse_time ($$;$) {
228 my ($date, $time, $gmt) = @_;
229 use Time::Local qw();
230 my ($hh, $mm, $ss) = unpack('A2A2A2', $time);
232 $gmt =~ /\A(?:UTC|GMT)\z/i or die "GM invalid: $gmt";
235 my @now = $gmt ? gmtime : localtime;
236 my ($YYYY, $MM, $DD);
237 if (length($date) == 8) { # RFC 3977 allows YYYYMMDD
238 ($YYYY, $MM, $DD) = unpack('A4A2A2', $date);
239 } else { # legacy clients send YYMMDD
240 ($YYYY, $MM, $DD) = unpack('A2A2A2', $date);
241 if ($YYYY > strftime('%y', @now)) {
242 my $cur_year = $now[5] + 1900;
243 $YYYY += int($cur_year / 1000) * 1000 - 100;
247 Time::Local::timegm($ss, $mm, $hh, $DD, $MM - 1, $YYYY);
249 Time::Local::timelocal($ss, $mm, $hh, $DD, $MM - 1, $YYYY);
253 sub group_line ($$) {
254 my ($self, $ng) = @_;
255 my ($min, $max) = $ng->mm->minmax;
256 more($self, "$ng->{name} $max $min n") if defined $min && defined $max;
259 sub cmd_newgroups ($$$;$$) {
260 my ($self, $date, $time, $gmt, $dists) = @_;
261 my $ts = eval { parse_time($date, $time, $gmt) };
265 more($self, '231 list of new newsgroups follows');
266 foreach my $ng (@{$self->{nntpd}->{grouplist}}) {
267 my $c = eval { $ng->mm->created_at } || 0;
268 next unless $c > $ts;
269 group_line($self, $ng);
274 sub wildmat2re (;$) {
275 return $_[0] = qr/.*/ if (!defined $_[0] || $_[0] eq '*');
278 use Digest::SHA qw(sha1_hex);
281 $tmp =~ s#(?<!\\)\[(.+)(?<!\\)\]#
283 my $key = sha1_hex($orig . $salt);
284 $orig =~ s/([^\w\-])+/\Q$1/g;
288 my %map = ('*' => '.*', '?' => '.' );
289 $tmp =~ s#(?<!\\)([^\w\\])#$map{$1} || "\Q$1"#ge;
291 $tmp =~ s#([a-f0-9]{40})#
292 my $orig = $keep{$1};
293 defined $orig ? $orig : $1;
296 $_[0] = qr/\A$tmp\z/;
300 return $_[0] = qr/\A\z/ unless defined $_[0];
301 my %map = ('*' => '.*', ',' => '|');
302 $_[0] =~ s!(.)!$map{$1} || "\Q$1"!ge;
303 $_[0] = qr/\A(?:$_[0])\z/;
306 sub cmd_newnews ($$$$;$$) {
307 my ($self, $newsgroups, $date, $time, $gmt, $dists) = @_;
308 my $ts = eval { parse_time($date, $time, $gmt) };
310 more($self, '230 list of new articles by message-id follows');
311 my ($keep, $skip) = split('!', $newsgroups, 2);
315 foreach my $ng (@{$self->{nntpd}->{grouplist}}) {
316 $ng->{name} =~ $keep or next;
317 $ng->{name} =~ $skip and next;
318 my $srch = $ng->search or next;
321 return '.' unless @srch;
324 my $opts = { asc => 1, limit => 1000, offset => 0 };
325 long_response($self, 0, long_response_limit, sub {
328 my $res = $srch->query($ts, $opts);
329 my $msgs = $res->{msgs};
330 if (my $nr = scalar @$msgs) {
332 join(">\r\n<", map { $_->mid } @$msgs ).
334 $opts->{offset} += $nr;
337 if (@srch) { # continue onto next newsgroup
339 } else { # break out of the long response.
340 $$i = long_response_limit;
347 my ($self, $group) = @_;
348 my $no_such = '411 no such news group';
349 my $ng = $self->{nntpd}->{groups}->{$group} or return $no_such;
352 my ($min, $max) = $ng->mm->minmax;
355 $self->{article} = $min;
356 my $est_size = $max - $min;
357 "211 $est_size $min $max $group";
360 sub article_adj ($$) {
361 my ($self, $off) = @_;
362 my $ng = $self->{ng} or return '412 no newsgroup selected';
364 my $n = $self->{article};
365 defined $n or return '420 no current article has been selected';
368 my $mid = $ng->mm->mid_for($n);
370 $n = $off > 0 ? 'next' : 'previous';
371 return "421 no $n article in this group";
373 $self->{article} = $n;
374 "223 $n <$mid> article retrieved - request text separately";
377 sub cmd_next ($) { article_adj($_[0], 1) }
378 sub cmd_last ($) { article_adj($_[0], -1) }
380 # We want to encourage using email and CC-ing everybody involved to avoid
381 # the single-point-of-failure a single server provides.
384 my $ng = $self->{ng};
385 $ng ? "440 mailto:$ng->{address} to post" : '440 posting not allowed'
390 res($self, '205 closing connection - goodbye!');
395 sub art_lookup ($$$) {
396 my ($self, $art, $set_headers) = @_;
397 my $ng = $self->{ng};
401 if ($art =~ /\A\d+\z/o) {
402 $err = '423 no such article number in this group';
405 } elsif ($art =~ /\A<([^>]+)>\z/) {
408 $n = $ng->mm->num_for($mid) if $ng;
409 goto found if defined $n;
410 foreach my $g (values %{$self->{nntpd}->{groups}}) {
411 $n = $g->mm->num_for($mid);
422 $err = '420 no current article has been selected';
423 $n = $self->{article};
424 defined $n or return $err;
426 $ng or return '412 no newsgroup has been selected';
427 $mid = $ng->mm->mid_for($n);
428 defined $mid or return $err;
431 my $o = 'HEAD:' . mid2path($mid);
433 my $s = eval { Email::MIME->new($ng->gcf->cat_file($o, \$bytes)) };
434 return $err unless $s;
437 $s->header_set('Newsgroups', $ng->{name});
438 $s->header_set('Xref', xref($ng, $n));
439 $lines = $s->body =~ tr!\n!\n!;
442 $s->body_set('') if ($set_headers == 2);
444 [ $n, $mid, $s, $bytes, $lines, $ng ];
447 sub simple_body_write ($$) {
451 $body =~ s/^\./../smg;
452 $body =~ s/(?<!\r)\n/\r\n/sg;
453 do_more($self, $body);
454 do_more($self, "\r\n") unless $body =~ /\r\n\z/s;
459 my ($self, $art) = @_;
460 $self->{article} = $art if defined $art && $art =~ /\A\d+\z/;
463 sub cmd_article ($;$) {
464 my ($self, $art) = @_;
465 my $r = art_lookup($self, $art, 1);
466 return $r unless ref $r;
467 my ($n, $mid, $s) = @$r;
468 set_art($self, $art);
469 more($self, "220 $n <$mid> article retrieved - head and body follow");
470 do_more($self, $s->header_obj->as_string);
471 do_more($self, "\r\n");
472 simple_body_write($self, $s);
476 my ($self, $art) = @_;
477 my $r = art_lookup($self, $art, 2);
478 return $r unless ref $r;
479 my ($n, $mid, $s) = @$r;
480 set_art($self, $art);
481 more($self, "221 $n <$mid> article retrieved - head follows");
482 do_more($self, $s->header_obj->as_string);
487 my ($self, $art) = @_;
488 my $r = art_lookup($self, $art, 0);
489 return $r unless ref $r;
490 my ($n, $mid, $s) = @$r;
491 set_art($self, $art);
492 more($self, "222 $n <$mid> article retrieved - body follows");
493 simple_body_write($self, $s);
497 my ($self, $art) = @_;
498 my $r = art_lookup($self, $art, 0);
499 return $r unless ref $r;
500 my ($n, $mid, undef) = @$r;
501 set_art($self, $art);
502 "223 $n <$mid> article retrieved - request text separately";
505 sub cmd_ihave ($) { '435 article not wanted - do not send it' }
507 sub cmd_date ($) { '111 '.strftime('%Y%m%d%H%M%S', gmtime(time)) }
511 more($self, '100 help text follows');
516 my ($self, $range) = @_;
517 my $ng = $self->{ng} or return '412 no news group has been selected';
518 defined $range or return '420 No article(s) selected';
520 my ($min, $max) = $ng->mm->minmax;
521 if ($range =~ /\A(\d+)\z/) {
523 } elsif ($range =~ /\A(\d+)-\z/) {
524 ($beg, $end) = ($1, $max);
525 } elsif ($range =~ /\A(\d+)-(\d+)\z/) {
526 ($beg, $end) = ($1, $2);
530 $beg = $min if ($beg < $min);
531 $end = $max if ($end > $max);
532 return '420 No article(s) selected' if ($beg > $end);
536 sub long_response ($$$$) {
537 my ($self, $beg, $end, $cb) = @_;
538 die "BUG: nested long response" if $self->{long_res};
540 my $fd = $self->{fd};
541 defined $fd or return;
542 # make sure we disable reading during a long response,
543 # clients should not be sending us stuff and making us do more
544 # work while we are stream a response to them
545 $self->watch_read(0);
547 $self->{long_res} = sub {
548 # limit our own running time for fairness with other
549 # clients and to avoid buffering too much:
554 eval { $cb->(\$beg) };
555 } until (($err = $@) || $self->{closed} ||
556 ++$beg > $end || !--$lim || $self->{write_buf_size});
558 if ($err || $self->{closed}) {
559 $self->{long_res} = undef;
563 "%s during long response[$fd] - %0.6f",
566 if ($self->{closed}) {
567 out($self, " deferred[$fd] aborted - %0.6f",
570 update_idle_time($self);
571 $self->watch_read(1);
573 } elsif (!$lim || $self->{write_buf_size}) {
574 # no recursion, schedule another call ASAP
575 # but only after all pending writes are done
576 update_idle_time($self);
577 Danga::Socket->AddTimer(0, sub {
578 $self->write($self->{long_res});
581 $self->{long_res} = undef;
582 $self->watch_read(1);
584 out($self, " deferred[$fd] done - %0.6f", now() - $t0);
587 $self->{long_res}->(); # kick off!
591 sub hdr_message_id ($$$) { # optimize XHDR Message-ID [range] for slrnpull.
592 my ($self, $xhdr, $range) = @_;
594 if (defined $range && $range =~ /\A<(.+)>\z/) { # Message-ID
595 my ($ng, $n) = mid_lookup($self, $1);
596 return r430 unless $n;
597 hdr_mid_response($self, $xhdr, $ng, $n, $range, $range);
598 } else { # numeric range
599 $range = $self->{article} unless defined $range;
600 my $r = get_range($self, $range);
601 return $r unless ref $r;
602 my $mm = $self->{ng}->mm;
603 my ($beg, $end) = @$r;
604 more($self, $xhdr ? r221 : r225);
605 long_response($self, $beg, $end, sub {
607 my $mid = $mm->mid_for($$i);
608 more($self, "$$i <$mid>") if defined $mid;
615 "$ng->{domain} $ng->{name}:$n"
618 sub mid_lookup ($$) {
619 my ($self, $mid) = @_;
620 my $self_ng = $self->{ng};
622 my $n = $self_ng->mm->num_for($mid);
623 return ($self_ng, $n) if defined $n;
625 foreach my $ng (values %{$self->{nntpd}->{groups}}) {
626 next if defined $self_ng && $ng eq $self_ng;
627 my $n = $ng->mm->num_for($mid);
628 return ($ng, $n) if defined $n;
633 sub hdr_xref ($$$) { # optimize XHDR Xref [range] for rtin
634 my ($self, $xhdr, $range) = @_;
636 if (defined $range && $range =~ /\A<(.+)>\z/) { # Message-ID
637 my ($ng, $n) = mid_lookup($self, $1);
638 return r430 unless $n;
639 hdr_mid_response($self, $xhdr, $ng, $n, $range, xref($ng, $n));
640 } else { # numeric range
641 $range = $self->{article} unless defined $range;
642 my $r = get_range($self, $range);
643 return $r unless ref $r;
644 my $ng = $self->{ng};
646 my ($beg, $end) = @$r;
647 more($self, $xhdr ? r221 : r225);
648 long_response($self, $beg, $end, sub {
650 my $mid = $mm->mid_for($$i);
651 more($self, "$$i ".xref($ng, $$i)) if defined $mid;
656 sub search_header_for {
657 my ($srch, $mid, $field) = @_;
658 my $smsg = $srch->lookup_message($mid) or return;
659 $smsg = PublicInbox::SearchMsg->load_doc($smsg->{doc});
663 sub hdr_searchmsg ($$$$) {
664 my ($self, $xhdr, $field, $range) = @_;
665 if (defined $range && $range =~ /\A<(.+)>\z/) { # Message-ID
666 my ($ng, $n) = mid_lookup($self, $1);
667 return r430 unless $n;
668 my $v = search_header_for($ng->search, $range, $field);
669 hdr_mid_response($self, $xhdr, $ng, $n, $range, $v);
670 } else { # numeric range
671 $range = $self->{article} unless defined $range;
672 my $srch = $self->{ng}->search;
673 my $mm = $self->{ng}->mm;
674 my $r = get_range($self, $range);
675 return $r unless ref $r;
676 my ($beg, $end) = @$r;
677 more($self, $xhdr ? r221 : r225);
679 long_response($self, $beg, $end, sub {
681 my $res = $srch->query_xover($beg, $end, $off);
682 my $msgs = $res->{msgs};
683 my $nr = scalar @$msgs or return;
686 foreach my $s (@$msgs) {
687 $tmp .= $s->num . ' ' . $s->$field . "\r\n";
689 do_more($self, $tmp);
690 # -1 to adjust for implicit increment in long_response
691 $$i = $nr ? $$i + $nr - 1 : long_response_limit;
697 my ($self, $xhdr, $header, $range) = @_;
698 my $sub = lc $header;
699 if ($sub eq 'message-id') {
700 hdr_message_id($self, $xhdr, $range);
701 } elsif ($sub eq 'xref') {
702 hdr_xref($self, $xhdr, $range);
703 } elsif ($sub =~ /\A(?:subject|references|date|from|to|cc|
705 hdr_searchmsg($self, $xhdr, $sub, $range);
706 } elsif ($sub =~ /\A:(bytes|lines)\z/) {
707 hdr_searchmsg($self, $xhdr, $1, $range);
709 $xhdr ? (r221 . "\r\n.") : "503 HDR not permitted on $header";
715 my ($self, $header, $range) = @_;
716 do_hdr($self, 0, $header, $range);
720 sub cmd_xhdr ($$;$) {
721 my ($self, $header, $range) = @_;
722 do_hdr($self, 1, $header, $range);
725 sub hdr_mid_prefix ($$$$$) {
726 my ($self, $xhdr, $ng, $n, $mid) = @_;
727 return $mid if $xhdr;
729 # HDR for RFC 3977 users
730 if (my $self_ng = $self->{ng}) {
731 ($self_ng eq $ng) ? $n : '0';
737 sub hdr_mid_response ($$$$$$) {
738 my ($self, $xhdr, $ng, $n, $mid, $v) = @_; # r: art_lookup result
741 $res .= r221 . "\r\n";
742 $res .= "$mid $v\r\n";
744 $res .= r225 . "\r\n";
745 my $pfx = hdr_mid_prefix($self, $xhdr, $ng, $n, $mid);
746 $res .= "$pfx $v\r\n";
748 res($self, $res .= '.');
752 sub cmd_xrover ($;$) {
753 my ($self, $range) = @_;
754 my $ng = $self->{ng} or return '412 no newsgroup selected';
755 (defined $range && $range =~ /[<>]/) and
756 return '420 No article(s) selected'; # no message IDs
758 $range = $self->{article} unless defined $range;
759 my $r = get_range($self, $range);
760 return $r unless ref $r;
761 my ($beg, $end) = @$r;
763 my $srch = $ng->search;
764 more($self, '224 Overview information follows');
765 long_response($self, $beg, $end, sub {
767 my $mid = $mm->mid_for($$i) or return;
768 my $h = search_header_for($srch, $mid, 'references');
769 more($self, "$$i $h");
774 my ($num, $smsg) = @_;
775 # n.b. field access and procedural calls can be
776 # 10%-15% faster than OO method calls:
780 PublicInbox::SearchMsg::date($smsg),
781 '<'.PublicInbox::SearchMsg::mid($smsg).'>',
783 PublicInbox::SearchMsg::bytes($smsg),
784 PublicInbox::SearchMsg::lines($smsg));
788 my ($self, $range) = @_;
789 if ($range && $range =~ /\A<(.+)>\z/) {
790 my ($ng, $n) = mid_lookup($self, $1);
791 my $smsg = $ng->search->lookup_message($range) or
792 return '430 No article with that message-id';
793 more($self, '224 Overview information follows (multi-line)');
794 $smsg = PublicInbox::SearchMsg->load_doc($smsg->{doc});
796 # Only set article number column if it's the current group
797 my $self_ng = $self->{ng};
798 $n = 0 if (!$self_ng || $self_ng ne $ng);
799 more($self, over_line($n, $smsg));
802 cmd_xover($self, $range);
806 sub cmd_xover ($;$) {
807 my ($self, $range) = @_;
808 $range = $self->{article} unless defined $range;
809 my $r = get_range($self, $range);
810 return $r unless ref $r;
811 my ($beg, $end) = @$r;
812 more($self, "224 Overview information follows for $beg to $end");
813 my $srch = $self->{ng}->search;
815 long_response($self, $beg, $end, sub {
817 my $res = $srch->query_xover($beg, $end, $off);
818 my $msgs = $res->{msgs};
819 my $nr = scalar @$msgs or return;
823 more($self, join("\r\n", map {
824 over_line(PublicInbox::SearchMsg::num($_), $_);
827 # -1 to adjust for implicit increment in long_response
828 $$i = $nr ? $$i + $nr - 1 : long_response_limit;
833 my ($self, $mid) = @_;
834 return r501 unless $mid =~ /\A<(.+)>\z/;
837 foreach my $ng (values %{$self->{nntpd}->{groups}}) {
838 my $n = $ng->mm->num_for($mid);
839 push @paths, "$ng->{name}/$n" if defined $n;
841 return '430 no such article on server' unless @paths;
842 '223 '.join(' ', @paths);
846 my ($self, $line) = @_;
847 do_write($self, $line . "\r\n");
851 my ($self, $line) = @_;
852 do_more($self, $line . "\r\n");
856 my ($self, $data) = @_;
857 my $done = $self->write($data);
858 die if $self->{closed};
860 # Do not watch for readability if we have data in the queue,
861 # instead re-enable watching for readability when we can
862 $self->watch_read(0) if (!$done || $self->{long_res});
868 my ($self, $fmt, @args) = @_;
869 printf { $self->{nntpd}->{err} } $fmt."\n", @args;
873 my ($self, $fmt, @args) = @_;
874 printf { $self->{nntpd}->{out} } $fmt."\n", @args;
877 use constant MSG_MORE => ($^O eq 'linux') ? 0x8000 : 0;
880 my ($self, $data) = @_;
881 if (MSG_MORE && !$self->{write_buf_size}) {
882 my $n = send($self->{sock}, $data, MSG_MORE);
884 my $dlen = length($data);
885 return 1 if $n == $dlen; # all done!
886 $data = substr($data, $n, $dlen - $n);
889 do_write($self, $data);
892 # callbacks for Danga::Socket
894 sub event_hup { $_[0]->close }
895 sub event_err { $_[0]->close }
899 update_idle_time($self);
900 # only continue watching for readability when we are done writing:
901 if ($self->write(undef) == 1 && !$self->{long_res}) {
902 $self->watch_read(1);
908 use constant LINE_MAX => 512; # RFC 977 section 2.3
911 my $buf = $self->read(LINE_MAX) or return $self->close;
912 $self->{rbuf} .= $$buf;
913 while ($r > 0 && $self->{rbuf} =~ s/\A\s*([^\r\n]+)\r?\n//) {
916 my $fd = $self->{fd};
917 $r = eval { process_line($self, $line) };
918 my $d = $self->{long_res} ?
919 " deferred[$fd]" : '';
920 out($self, "[$fd] %s - %0.6f$d", $line, now() - $t0);
923 return $self->close if $r < 0;
924 my $len = length($self->{rbuf});
925 return $self->close if ($len >= LINE_MAX);
926 update_idle_time($self);
930 my ($self, $bool) = @_;
931 my $rv = $self->SUPER::watch_read($bool);
932 if ($bool && $self->{rbuf} ne '') {
933 # Force another read if there is a pipelined request.
934 # We don't know if the socket has anything for us to read,
935 # and we must double-check again by the time the timer fires
936 # in case we really did dispatch a read event and started
937 # another long response.
938 Danga::Socket->AddTimer(0, sub {
939 if (&Danga::Socket::POLLIN & $self->{event_watch}) {
947 # for graceful shutdown in PublicInbox::Daemon:
950 ($self->{rbuf} ne '' || $self->{long_res} || $self->{write_buf_size});