1 # Copyright (C) 2015 all contributors <meta@public-inbox.org>
2 # License: AGPLv3 or later (https://www.gnu.org/licenses/agpl-3.0.txt)
3 package PublicInbox::NNTP;
6 use base qw(Danga::Socket);
7 use fields qw(nntpd article rbuf ng long_res);
8 use PublicInbox::Search;
9 use PublicInbox::Msgmap;
10 use PublicInbox::GitCatFile;
11 use PublicInbox::MID qw(mid2path);
13 use Data::Dumper qw(Dumper);
14 use POSIX qw(strftime);
15 use Time::HiRes qw(clock_gettime CLOCK_MONOTONIC);
17 r501 => '501 command syntax error',
18 r221 => '221 Header follows',
19 r224 => '224 Overview information follows (multi-line)',
20 r225 => '225 Headers follow (multi-line)',
21 r430 => '430 No article with that message-id',
22 long_response_limit => 0xffffffff,
25 sub now () { clock_gettime(CLOCK_MONOTONIC) };
27 my @OVERVIEW = qw(Subject From Date Message-ID References);
28 my $OVERVIEW_FMT = join(":\r\n", @OVERVIEW, qw(Bytes Lines)) . ":\r\n";
29 my $LIST_HEADERS = join("\r\n", @OVERVIEW,
30 qw(:bytes :lines Xref To Cc)) . "\r\n";
32 # disable commands with easy DoS potential:
33 # LISTGROUP could get pretty bad, too...
34 my %DISABLED; # = map { $_ => 1 } qw(xover list_overview_fmt newnews xhdr);
36 my $EXPMAP; # fd -> [ idle_time, $self ]
38 our $EXPTIME = 180; # 3 minutes
40 sub update_idle_time ($) {
42 my $tmp = $self->{sock} or return;
44 defined $tmp and $EXPMAP->{$tmp} = [ now(), $self ];
50 my $old = $now - $exp;
51 my $next = $now + $exp;
54 while (my ($fd, $v) = each %$EXPMAP) {
55 my ($idle_time, $nntp) = @$v;
56 if ($idle_time < $old) {
57 $nntp->close; # idempotent
59 my $nexp = $idle_time + $exp;
60 $next = $nexp if ($nexp < $next);
68 $next = 0 if $next < 0;
69 $EXPTIMER = Danga::Socket->AddTimer($next, *expire_old);
72 # noop to kick outselves out of the loop so descriptors
74 Danga::Socket->AddTimer(0, *expire_cleanup);
79 my ($class, $sock, $nntpd) = @_;
80 my $self = fields::new($class);
81 binmode $sock, ':utf8'; # RFC 3977
82 $self->SUPER::new($sock);
83 $self->{nntpd} = $nntpd;
84 res($self, '201 server ready - post via email');
87 update_idle_time($self);
88 $EXPTIMER ||= Danga::Socket->AddTimer($EXPTIME, *expire_old);
94 my $tot = prototype $cb;
95 my ($nreq, undef) = split(';', $tot);
96 $nreq = ($nreq =~ tr/$//) - 1;
97 $tot = ($tot =~ tr/$//) - 1;
98 ($argc <= $tot && $argc >= $nreq);
101 # returns 1 if we can continue, 0 if not due to buffered writes or disconnect
102 sub process_line ($$) {
104 my ($req, @args) = split(/\s+/, $l);
108 $req = $DISABLED{$req} ? undef : *{'cmd_'.$req}{CODE};
110 return res($self, '500 command not recognized') unless $req;
111 return res($self, r501) unless args_ok($req, scalar @args);
113 my $res = eval { $req->($self, @args) };
115 if ($err && !$self->{closed}) {
116 chomp($l = Dumper(\$l));
117 err($self, "error from: $l $err");
118 $res = '503 program fault - command not performed';
120 return 0 unless defined $res;
125 my ($self, $arg) = @_;
127 return r501 unless $arg eq 'READER';
128 '201 Posting prohibited';
131 sub cmd_slave ($) { '202 slave status noted' }
133 sub cmd_xgtitle ($;$) {
134 my ($self, $wildmat) = @_;
135 more($self, '282 list of groups and descriptions follows');
136 list_newsgroups($self, $wildmat);
140 sub list_overview_fmt ($) {
142 do_more($self, $OVERVIEW_FMT);
145 sub list_headers ($;$) {
147 do_more($self, $LIST_HEADERS);
150 sub list_active ($;$) {
151 my ($self, $wildmat) = @_;
152 wildmat2re($wildmat);
153 foreach my $ng (@{$self->{nntpd}->{grouplist}}) {
154 $ng->{name} =~ $wildmat or next;
155 group_line($self, $ng);
159 sub list_active_times ($;$) {
160 my ($self, $wildmat) = @_;
161 wildmat2re($wildmat);
162 foreach my $ng (@{$self->{nntpd}->{grouplist}}) {
163 $ng->{name} =~ $wildmat or next;
164 my $c = eval { $ng->mm->created_at } || time;
165 more($self, "$ng->{name} $c $ng->{address}");
169 sub list_newsgroups ($;$) {
170 my ($self, $wildmat) = @_;
171 wildmat2re($wildmat);
172 foreach my $ng (@{$self->{nntpd}->{grouplist}}) {
173 $ng->{name} =~ $wildmat or next;
174 my $d = $ng->description;
175 more($self, "$ng->{name} $d");
179 # LIST SUBSCRIPTIONS, DISTRIB.PATS are not supported
180 sub cmd_list ($;$$) {
181 my ($self, @args) = @_;
183 my $arg = shift @args;
184 $arg =~ tr/A-Z./a-z_/;
186 return r501 if $DISABLED{$arg};
192 return r501 unless $arg && args_ok($arg, scalar @args);
193 more($self, '215 information follows');
194 $arg->($self, @args);
196 more($self, '215 list of newsgroups follows');
197 foreach my $ng (@{$self->{nntpd}->{grouplist}}) {
198 group_line($self, $ng);
204 sub cmd_listgroup ($;$) {
205 my ($self, $group) = @_;
206 if (defined $group) {
207 my $res = cmd_group($self, $group);
208 return $res if ($res !~ /\A211 /);
212 $self->{ng} or return '412 no newsgroup selected';
213 $self->long_response(0, long_response_limit, sub {
215 my $nr = $self->{ng}->mm->id_batch($$i, sub {
217 more($self, join("\r\n", @$ary));
220 # -1 to adjust for implicit increment in long_response
221 $$i = $nr ? $$i + $nr - 1 : long_response_limit;
225 sub parse_time ($$;$) {
226 my ($date, $time, $gmt) = @_;
227 use Time::Local qw();
228 my ($hh, $mm, $ss) = unpack('A2A2A2', $time);
230 $gmt =~ /\A(?:UTC|GMT)\z/i or die "GM invalid: $gmt\n";
233 my @now = $gmt ? gmtime : localtime;
234 my ($YYYY, $MM, $DD);
235 if (length($date) == 8) { # RFC 3977 allows YYYYMMDD
236 ($YYYY, $MM, $DD) = unpack('A4A2A2', $date);
237 } else { # legacy clients send YYMMDD
238 ($YYYY, $MM, $DD) = unpack('A2A2A2', $date);
239 if ($YYYY > strftime('%y', @now)) {
240 my $cur_year = $now[5] + 1900;
241 $YYYY += int($cur_year / 1000) * 1000 - 100;
245 Time::Local::timegm($ss, $mm, $hh, $DD, $MM - 1, $YYYY);
247 Time::Local::timelocal($ss, $mm, $hh, $DD, $MM - 1, $YYYY);
251 sub group_line ($$) {
252 my ($self, $ng) = @_;
253 my ($min, $max) = $ng->mm->minmax;
254 more($self, "$ng->{name} $max $min n") if defined $min && defined $max;
257 sub cmd_newgroups ($$$;$$) {
258 my ($self, $date, $time, $gmt, $dists) = @_;
259 my $ts = eval { parse_time($date, $time, $gmt) };
263 more($self, '231 list of new newsgroups follows');
264 foreach my $ng (@{$self->{nntpd}->{grouplist}}) {
265 my $c = eval { $ng->mm->created_at } || 0;
266 next unless $c > $ts;
267 group_line($self, $ng);
272 sub wildmat2re (;$) {
273 return $_[0] = qr/.*/ if (!defined $_[0] || $_[0] eq '*');
276 use Digest::SHA qw(sha1_hex);
279 $tmp =~ s#(?<!\\)\[(.+)(?<!\\)\]#
281 my $key = sha1_hex($orig . $salt);
282 $orig =~ s/([^\w\-])+/\Q$1/g;
286 my %map = ('*' => '.*', '?' => '.' );
287 $tmp =~ s#(?<!\\)([^\w\\])#$map{$1} || "\Q$1"#ge;
289 $tmp =~ s#([a-f0-9]{40})#
290 my $orig = $keep{$1};
291 defined $orig ? $orig : $1;
294 $_[0] = qr/\A$tmp\z/;
298 return $_[0] = qr/\A\z/ unless defined $_[0];
299 my %map = ('*' => '.*', ',' => '|');
300 $_[0] =~ s!(.)!$map{$1} || "\Q$1"!ge;
301 $_[0] = qr/\A(?:$_[0])\z/;
304 sub cmd_newnews ($$$$;$$) {
305 my ($self, $newsgroups, $date, $time, $gmt, $dists) = @_;
306 my $ts = eval { parse_time($date, $time, $gmt) };
308 more($self, '230 list of new articles by message-id follows');
309 my ($keep, $skip) = split('!', $newsgroups, 2);
313 foreach my $ng (@{$self->{nntpd}->{grouplist}}) {
314 $ng->{name} =~ $keep or next;
315 $ng->{name} =~ $skip and next;
316 my $srch = $ng->search or next;
319 return '.' unless @srch;
322 my $opts = { asc => 1, limit => 1000, offset => 0 };
323 $self->long_response(0, long_response_limit, sub {
326 my $res = $srch->query($ts, $opts);
327 my $msgs = $res->{msgs};
328 if (my $nr = scalar @$msgs) {
330 join(">\r\n<", map { $_->mid } @$msgs ).
332 $opts->{offset} += $nr;
335 if (@srch) { # continue onto next newsgroup
337 } else { # break out of the long response.
338 $$i = long_response_limit;
345 my ($self, $group) = @_;
346 my $no_such = '411 no such news group';
347 my $ng = $self->{nntpd}->{groups}->{$group} or return $no_such;
350 my ($min, $max) = $ng->mm->minmax;
353 $self->{article} = $min;
354 my $est_size = $max - $min;
355 "211 $est_size $min $max $group";
358 sub article_adj ($$) {
359 my ($self, $off) = @_;
360 my $ng = $self->{ng} or return '412 no newsgroup selected';
362 my $n = $self->{article};
363 defined $n or return '420 no current article has been selected';
366 my $mid = $ng->mm->mid_for($n);
368 $n = $off > 0 ? 'next' : 'previous';
369 return "421 no $n article in this group";
371 $self->{article} = $n;
372 "223 $n <$mid> article retrieved - request text separately";
375 sub cmd_next ($) { article_adj($_[0], 1) }
376 sub cmd_last ($) { article_adj($_[0], -1) }
378 # We want to encourage using email and CC-ing everybody involved to avoid
379 # the single-point-of-failure a single server provides.
382 my $ng = $self->{ng};
383 $ng ? "440 mailto:$ng->{address} to post" : '440 posting not allowed'
388 res($self, '205 closing connection - goodbye!');
393 sub art_lookup ($$$) {
394 my ($self, $art, $set_headers) = @_;
395 my $ng = $self->{ng};
399 if ($art =~ /\A\d+\z/o) {
400 $err = '423 no such article number in this group';
403 } elsif ($art =~ /\A<([^>]+)>\z/) {
406 $n = $ng->mm->num_for($mid) if $ng;
407 goto found if defined $n;
408 foreach my $g (values %{$self->{nntpd}->{groups}}) {
409 $n = $g->mm->num_for($mid);
420 $err = '420 no current article has been selected';
421 $n = $self->{article};
422 defined $n or return $err;
424 $ng or return '412 no newsgroup has been selected';
425 $mid = $ng->mm->mid_for($n);
426 defined $mid or return $err;
429 my $o = 'HEAD:' . mid2path($mid);
431 my $s = eval { Email::MIME->new($ng->gcf->cat_file($o, \$bytes)) };
432 return $err unless $s;
435 $s->header_set('Newsgroups', $ng->{name});
436 $s->header_set('Xref', xref($ng, $n));
437 $lines = $s->body =~ tr!\n!\n!;
440 $s->body_set('') if ($set_headers == 2);
442 [ $n, $mid, $s, $bytes, $lines, $ng ];
445 sub simple_body_write ($$) {
449 $body =~ s/^\./../smg;
450 $body =~ s/(?<!\r)\n/\r\n/sg;
451 do_more($self, $body);
452 do_more($self, "\r\n") unless $body =~ /\r\n\z/s;
457 my ($self, $art) = @_;
458 $self->{article} = $art if defined $art && $art =~ /\A\d+\z/;
461 sub cmd_article ($;$) {
462 my ($self, $art) = @_;
463 my $r = $self->art_lookup($art, 1);
464 return $r unless ref $r;
465 my ($n, $mid, $s) = @$r;
466 set_art($self, $art);
467 more($self, "220 $n <$mid> article retrieved - head and body follow");
468 do_more($self, $s->header_obj->as_string);
469 do_more($self, "\r\n");
470 simple_body_write($self, $s);
474 my ($self, $art) = @_;
475 my $r = $self->art_lookup($art, 2);
476 return $r unless ref $r;
477 my ($n, $mid, $s) = @$r;
478 set_art($self, $art);
479 more($self, "221 $n <$mid> article retrieved - head follows");
480 do_more($self, $s->header_obj->as_string);
485 my ($self, $art) = @_;
486 my $r = $self->art_lookup($art, 0);
487 return $r unless ref $r;
488 my ($n, $mid, $s) = @$r;
489 set_art($self, $art);
490 more($self, "222 $n <$mid> article retrieved - body follows");
491 simple_body_write($self, $s);
495 my ($self, $art) = @_;
496 my $r = $self->art_lookup($art, 0);
497 return $r unless ref $r;
498 my ($n, $mid, undef) = @$r;
499 set_art($self, $art);
500 "223 $n <$mid> article retrieved - request text separately";
503 sub cmd_ihave ($) { '435 article not wanted - do not send it' }
505 sub cmd_date ($) { '111 '.strftime('%Y%m%d%H%M%S', gmtime(time)) }
509 more($self, '100 help text follows');
514 my ($self, $range) = @_;
515 my $ng = $self->{ng} or return '412 no news group has been selected';
516 defined $range or return '420 No article(s) selected';
518 my ($min, $max) = $ng->mm->minmax;
519 if ($range =~ /\A(\d+)\z/) {
521 } elsif ($range =~ /\A(\d+)-\z/) {
522 ($beg, $end) = ($1, $max);
523 } elsif ($range =~ /\A(\d+)-(\d+)\z/) {
524 ($beg, $end) = ($1, $2);
528 $beg = $min if ($beg < $min);
529 $end = $max if ($end > $max);
530 return '420 No article(s) selected' if ($beg > $end);
535 my ($r, $header) = @_;
536 return $r->[3] if $header =~ /\A:?bytes\z/i;
537 return $r->[4] if $header =~ /\A:?lines\z/i;
538 $r = $r->[2]->header_obj->header($header);
539 defined $r or return;
540 $r =~ s/[\r\n\t]+/ /sg;
544 sub long_response ($$$$) {
545 my ($self, $beg, $end, $cb) = @_;
546 die "BUG: nested long response" if $self->{long_res};
548 my $fd = $self->{fd};
549 defined $fd or return;
550 # make sure we disable reading during a long response,
551 # clients should not be sending us stuff and making us do more
552 # work while we are stream a response to them
553 $self->watch_read(0);
555 $self->{long_res} = sub {
556 # limit our own running time for fairness with other
557 # clients and to avoid buffering too much:
562 eval { $cb->(\$beg) };
563 } until (($err = $@) || $self->{closed} ||
564 ++$beg > $end || !--$lim || $self->{write_buf_size});
566 if ($err || $self->{closed}) {
567 $self->{long_res} = undef;
571 "$err during long response[$fd] - %0.6f",
574 if ($self->{closed}) {
575 out($self, " deferred[$fd] aborted - %0.6f",
578 update_idle_time($self);
579 $self->watch_read(1);
581 } elsif (!$lim || $self->{write_buf_size}) {
582 # no recursion, schedule another call ASAP
583 # but only after all pending writes are done
584 update_idle_time($self);
585 Danga::Socket->AddTimer(0, sub {
586 $self->write($self->{long_res});
589 $self->{long_res} = undef;
590 $self->watch_read(1);
592 out($self, " deferred[$fd] done - %0.6f", now() - $t0);
595 $self->{long_res}->(); # kick off!
599 sub hdr_message_id ($$$) { # optimize XHDR Message-ID [range] for slrnpull.
600 my ($self, $xhdr, $range) = @_;
602 if (defined $range && $range =~ /\A<(.+)>\z/) { # Message-ID
603 my ($ng, $n) = mid_lookup($self, $1);
604 return r430 unless $n;
605 hdr_mid_response($self, $xhdr, $ng, $n, $range, $range);
606 } else { # numeric range
607 $range = $self->{article} unless defined $range;
608 my $r = get_range($self, $range);
609 return $r unless ref $r;
610 my $mm = $self->{ng}->mm;
611 my ($beg, $end) = @$r;
612 more($self, $xhdr ? r221 : r225);
613 $self->long_response($beg, $end, sub {
615 my $mid = $mm->mid_for($$i);
616 more($self, "$$i <$mid>") if defined $mid;
623 "$ng->{domain} $ng->{name}:$n"
626 sub mid_lookup ($$) {
627 my ($self, $mid) = @_;
628 my $self_ng = $self->{ng};
630 my $n = $self_ng->mm->num_for($mid);
631 return ($self_ng, $n) if defined $n;
633 foreach my $ng (values %{$self->{nntpd}->{groups}}) {
634 next if defined $self_ng && $ng eq $self_ng;
635 my $n = $ng->mm->num_for($mid);
636 return ($ng, $n) if defined $n;
641 sub hdr_xref ($$$) { # optimize XHDR Xref [range] for rtin
642 my ($self, $xhdr, $range) = @_;
644 if (defined $range && $range =~ /\A<(.+)>\z/) { # Message-ID
645 my ($ng, $n) = mid_lookup($self, $1);
646 return r430 unless $n;
647 hdr_mid_response($self, $xhdr, $ng, $n, $range, xref($ng, $n));
648 } else { # numeric range
649 $range = $self->{article} unless defined $range;
650 my $r = get_range($self, $range);
651 return $r unless ref $r;
652 my $ng = $self->{ng};
654 my ($beg, $end) = @$r;
655 more($self, $xhdr ? r221 : r225);
656 $self->long_response($beg, $end, sub {
658 my $mid = $mm->mid_for($$i);
659 more($self, "$$i ".xref($ng, $$i)) if defined $mid;
664 sub search_header_for {
665 my ($srch, $mid, $field) = @_;
666 my $smsg = $srch->lookup_message($mid) or return;
667 $smsg = PublicInbox::SearchMsg->load_doc($smsg->{doc});
671 sub hdr_searchmsg ($$$$) {
672 my ($self, $xhdr, $field, $range) = @_;
673 if (defined $range && $range =~ /\A<(.+)>\z/) { # Message-ID
674 my ($ng, $n) = mid_lookup($self, $1);
675 return r430 unless $n;
676 my $v = search_header_for($ng->search, $range, $field);
677 hdr_mid_response($self, $xhdr, $ng, $n, $range, $v);
678 } else { # numeric range
679 $range = $self->{article} unless defined $range;
680 my $srch = $self->{ng}->search;
681 my $mm = $self->{ng}->mm;
682 my $r = get_range($self, $range);
683 return $r unless ref $r;
684 my ($beg, $end) = @$r;
685 more($self, $xhdr ? r221 : r225);
687 $self->long_response($beg, $end, sub {
689 my $res = $srch->query_xover($beg, $end, $off);
690 my $msgs = $res->{msgs};
691 my $nr = scalar @$msgs or return;
694 foreach my $s (@$msgs) {
695 $tmp .= $s->num . ' ' . $s->$field . "\r\n";
697 do_more($self, $tmp);
698 # -1 to adjust for implicit increment in long_response
699 $$i = $nr ? $$i + $nr - 1 : long_response_limit;
705 my ($self, $xhdr, $header, $range) = @_;
706 my $sub = lc $header;
707 if ($sub eq 'message-id') {
708 hdr_message_id($self, $xhdr, $range);
709 } elsif ($sub eq 'xref') {
710 hdr_xref($self, $xhdr, $range);
711 } elsif ($sub =~ /\A(?:subject|references|date|from|to|cc|
713 hdr_searchmsg($self, $xhdr, $sub, $range);
714 } elsif ($sub =~ /\A:(bytes|lines)\z/) {
715 hdr_searchmsg($self, $xhdr, $1, $range);
717 $xhdr ? (r221 . "\r\n.") : "503 HDR not permitted on $header";
723 my ($self, $header, $range) = @_;
724 do_hdr($self, 0, $header, $range);
728 sub cmd_xhdr ($$;$) {
729 my ($self, $header, $range) = @_;
730 do_hdr($self, 1, $header, $range);
733 sub hdr_mid_prefix ($$$$$) {
734 my ($self, $xhdr, $ng, $n, $mid) = @_;
735 return $mid if $xhdr;
737 # HDR for RFC 3977 users
738 if (my $self_ng = $self->{ng}) {
739 ($self_ng eq $ng) ? $n : '0';
745 sub hdr_mid_response ($$$$$$) {
746 my ($self, $xhdr, $ng, $n, $mid, $v) = @_; # r: art_lookup result
749 $res .= r221 . "\r\n";
750 $res .= "$mid $v\r\n";
752 $res .= r225 . "\r\n";
753 my $pfx = hdr_mid_prefix($self, $xhdr, $ng, $n, $mid);
754 $res .= "$pfx $v\r\n";
756 res($self, $res .= '.');
760 sub cmd_xrover ($;$) {
761 my ($self, $range) = @_;
762 my $ng = $self->{ng} or return '412 no newsgroup selected';
763 (defined $range && $range =~ /[<>]/) and
764 return '420 No article(s) selected'; # no message IDs
766 $range = $self->{article} unless defined $range;
767 my $r = get_range($self, $range);
768 return $r unless ref $r;
769 my ($beg, $end) = @$r;
771 my $srch = $ng->search;
772 more($self, '224 Overview information follows');
773 $self->long_response($beg, $end, sub {
775 my $mid = $mm->mid_for($$i) or return;
776 my $h = search_header_for($srch, $mid, 'references');
777 more($self, "$$i $h");
782 my ($num, $smsg) = @_;
783 # n.b. field access and procedural calls can be
784 # 10%-15% faster than OO method calls:
788 PublicInbox::SearchMsg::date($smsg),
789 '<'.PublicInbox::SearchMsg::mid($smsg).'>',
791 PublicInbox::SearchMsg::bytes($smsg),
792 PublicInbox::SearchMsg::lines($smsg));
796 my ($self, $range) = @_;
797 if ($range && $range =~ /\A<(.+)>\z/) {
798 my ($ng, $n) = mid_lookup($self, $1);
799 my $smsg = $ng->search->lookup_message($range) or
800 return '430 No article with that message-id';
801 more($self, '224 Overview information follows (multi-line)');
802 $smsg = PublicInbox::SearchMsg->load_doc($smsg->{doc});
804 # Only set article number column if it's the current group
805 my $self_ng = $self->{ng};
806 $n = 0 if (!$self_ng || $self_ng ne $ng);
807 more($self, over_line($n, $smsg));
810 cmd_xover($self, $range);
814 sub cmd_xover ($;$) {
815 my ($self, $range) = @_;
816 $range = $self->{article} unless defined $range;
817 my $r = get_range($self, $range);
818 return $r unless ref $r;
819 my ($beg, $end) = @$r;
820 more($self, "224 Overview information follows for $beg to $end");
821 my $srch = $self->{ng}->search;
823 $self->long_response($beg, $end, sub {
825 my $res = $srch->query_xover($beg, $end, $off);
826 my $msgs = $res->{msgs};
827 my $nr = scalar @$msgs or return;
831 more($self, join("\r\n", map {
832 over_line(PublicInbox::SearchMsg::num($_), $_);
835 # -1 to adjust for implicit increment in long_response
836 $$i = $nr ? $$i + $nr - 1 : long_response_limit;
841 my ($self, $mid) = @_;
842 return r501 unless $mid =~ /\A<(.+)>\z/;
845 foreach my $ng (values %{$self->{nntpd}->{groups}}) {
846 my $n = $ng->mm->num_for($mid);
847 push @paths, "$ng->{name}/$n" if defined $n;
849 return '430 no such article on server' unless @paths;
850 '223 '.join(' ', @paths);
854 my ($self, $line) = @_;
855 do_write($self, $line . "\r\n");
859 my ($self, $line) = @_;
860 do_more($self, $line . "\r\n");
864 my ($self, $data) = @_;
865 my $done = $self->write($data);
866 die if $self->{closed};
868 # Do not watch for readability if we have data in the queue,
869 # instead re-enable watching for readability when we can
870 $self->watch_read(0) if (!$done || $self->{long_res});
876 my ($self, $fmt, @args) = @_;
877 printf { $self->{nntpd}->{err} } $fmt."\n", @args;
881 my ($self, $fmt, @args) = @_;
882 printf { $self->{nntpd}->{out} } $fmt."\n", @args;
885 use constant MSG_MORE => ($^O eq 'linux') ? 0x8000 : 0;
888 my ($self, $data) = @_;
889 if (MSG_MORE && !$self->{write_buf_size}) {
890 my $n = send($self->{sock}, $data, MSG_MORE);
892 my $dlen = length($data);
893 return 1 if $n == $dlen; # all done!
894 $data = substr($data, $n, $dlen - $n);
897 $self->do_write($data);
900 # callbacks for by Danga::Socket
902 sub event_hup { $_[0]->close }
903 sub event_err { $_[0]->close }
907 update_idle_time($self);
908 # only continue watching for readability when we are done writing:
909 if ($self->write(undef) == 1 && !$self->{long_res}) {
910 $self->watch_read(1);
916 use constant LINE_MAX => 512; # RFC 977 section 2.3
919 my $buf = $self->read(LINE_MAX) or return $self->close;
920 $self->{rbuf} .= $$buf;
921 while ($r > 0 && $self->{rbuf} =~ s/\A\s*([^\r\n]+)\r?\n//) {
924 my $fd = $self->{fd};
925 $r = eval { $self->process_line($line) };
926 my $d = $self->{long_res} ?
927 " deferred[$fd]" : '';
928 out($self, "[$fd] $line - %0.6f$d", now() - $t0);
931 return $self->close if $r < 0;
932 my $len = length($self->{rbuf});
933 return $self->close if ($len >= LINE_MAX);
934 update_idle_time($self);
938 my ($self, $bool) = @_;
939 my $rv = $self->SUPER::watch_read($bool);
940 if ($bool && $self->{rbuf} ne '') {
941 # Force another read if there is a pipelined request.
942 # We don't know if the socket has anything for us to read,
943 # and we must double-check again by the time the timer fires
944 # in case we really did dispatch a read event and started
945 # another long response.
946 Danga::Socket->AddTimer(0, sub {
947 if (&Danga::Socket::POLLIN & $self->{event_watch}) {
957 ($self->{rbuf} ne '' || $self->{long_res} || $self->{write_buf_size});