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::Msgmap;
9 use PublicInbox::GitCatFile;
10 use PublicInbox::MID qw(mid2path);
12 use Data::Dumper qw(Dumper);
13 use POSIX qw(strftime);
14 use Time::HiRes qw(clock_gettime ualarm CLOCK_MONOTONIC);
16 r501 => '501 command syntax error',
17 r221 => '221 Header follows',
18 r224 => '224 Overview information follows (multi-line)',
19 r430 => '430 No article with that message-id',
20 long_response_limit => 0xffffffff,
23 sub now () { clock_gettime(CLOCK_MONOTONIC) };
25 my @OVERVIEW = qw(Subject From Date Message-ID References Bytes Lines);
26 my %OVERVIEW = map { $_ => 1 } @OVERVIEW;
28 # disable commands with easy DoS potential:
29 # LISTGROUP could get pretty bad, too...
30 my %DISABLED; # = map { $_ => 1 } qw(xover list_overview_fmt newnews xhdr);
33 my ($class, $sock, $nntpd) = @_;
34 my $self = fields::new($class);
35 binmode $sock, ':utf8'; # RFC 3977
36 $self->SUPER::new($sock);
37 $self->{nntpd} = $nntpd;
38 res($self, '201 server ready - post via email');
46 my $tot = prototype $cb;
47 my ($nreq, undef) = split(';', $tot);
48 $nreq = ($nreq =~ tr/$//) - 1;
49 $tot = ($tot =~ tr/$//) - 1;
50 ($argc <= $tot && $argc >= $nreq);
53 # returns 1 if we can continue, 0 if not due to buffered writes or disconnect
54 sub process_line ($$) {
56 my ($req, @args) = split(/\s+/, $l);
60 $req = $DISABLED{$req} ? undef : *{'cmd_'.$req}{CODE};
62 return res($self, '500 command not recognized') unless $req;
63 return res($self, r501) unless args_ok($req, scalar @args);
65 my $res = eval { $req->($self, @args) };
67 if ($err && !$self->{closed}) {
68 chomp($l = Dumper(\$l));
69 err($self, "error from: $l $err");
70 $res = '503 program fault - command not performed';
72 return 0 unless defined $res;
77 my ($self, $arg) = @_;
79 return r501 unless $arg eq 'READER';
80 '200 reader status acknowledged';
83 sub cmd_slave ($) { '202 slave status noted' }
85 sub cmd_xgtitle ($;$) {
86 my ($self, $wildmat) = @_;
87 more($self, '282 list of groups and descriptions follows');
88 list_newsgroups($self, $wildmat);
92 sub list_overview_fmt ($$) {
94 more($self, $_ . ':') foreach @OVERVIEW;
97 sub list_active ($;$) {
98 my ($self, $wildmat) = @_;
100 foreach my $ng (@{$self->{nntpd}->{grouplist}}) {
101 $ng->{name} =~ $wildmat or next;
102 group_line($self, $ng);
106 sub list_active_times ($;$) {
107 my ($self, $wildmat) = @_;
108 wildmat2re($wildmat);
109 foreach my $ng (@{$self->{nntpd}->{grouplist}}) {
110 $ng->{name} =~ $wildmat or next;
111 my $c = eval { $ng->mm->created_at } || time;
112 more($self, "$ng->{name} $c $ng->{address}");
116 sub list_newsgroups ($;$) {
117 my ($self, $wildmat) = @_;
118 wildmat2re($wildmat);
119 foreach my $ng (@{$self->{nntpd}->{grouplist}}) {
120 $ng->{name} =~ $wildmat or next;
121 my $d = $ng->description;
122 more($self, "$ng->{name} $d");
126 # LIST SUBSCRIPTIONS not supported
127 sub cmd_list ($;$$) {
128 my ($self, @args) = @_;
130 my $arg = shift @args;
131 $arg =~ tr/A-Z./a-z_/;
133 return '503 function not performed' if $DISABLED{$arg};
139 return r501 unless $arg && args_ok($arg, scalar @args);
140 more($self, '215 information follows');
141 $arg->($self, @args);
143 more($self, '215 list of newsgroups follows');
144 foreach my $ng (@{$self->{nntpd}->{grouplist}}) {
145 group_line($self, $ng);
151 sub cmd_listgroup ($;$) {
152 my ($self, $group) = @_;
153 if (defined $group) {
154 my $res = cmd_group($self, $group);
155 return $res if ($res !~ /\A211 /);
159 $self->{ng} or return '412 no newsgroup selected';
160 $self->long_response(0, long_response_limit, sub {
162 my $nr = $self->{ng}->mm->id_batch($$i, sub {
164 more($self, join("\r\n", @$ary));
167 # -1 to adjust for implicit increment in long_response
168 $$i = $nr ? $$i + $nr - 1 : long_response_limit;
172 sub parse_time ($$;$) {
173 my ($date, $time, $gmt) = @_;
174 use Time::Local qw();
175 my ($hh, $mm, $ss) = unpack('A2A2A2', $time);
177 $gmt =~ /\A(?:UTC|GMT)\z/i or die "GM invalid: $gmt\n";
180 my @now = $gmt ? gmtime : localtime;
181 my ($YYYY, $MM, $DD);
182 if (length($date) == 8) { # RFC 3977 allows YYYYMMDD
183 ($YYYY, $MM, $DD) = unpack('A4A2A2', $date);
184 } else { # legacy clients send YYMMDD
185 ($YYYY, $MM, $DD) = unpack('A2A2A2', $date);
186 if ($YYYY > strftime('%y', @now)) {
187 my $cur_year = $now[5] + 1900;
188 $YYYY += int($cur_year / 1000) * 1000 - 100;
192 Time::Local::timegm($ss, $mm, $hh, $DD, $MM - 1, $YYYY);
194 Time::Local::timelocal($ss, $mm, $hh, $DD, $MM - 1, $YYYY);
198 sub group_line ($$) {
199 my ($self, $ng) = @_;
200 my ($min, $max) = $ng->mm->minmax;
201 more($self, "$ng->{name} $max $min n") if defined $min && defined $max;
204 sub cmd_newgroups ($$$;$$) {
205 my ($self, $date, $time, $gmt, $dists) = @_;
206 my $ts = eval { parse_time($date, $time, $gmt) };
210 more($self, '231 list of new newsgroups follows');
211 foreach my $ng (@{$self->{nntpd}->{grouplist}}) {
212 my $c = eval { $ng->mm->created_at } || 0;
213 next unless $c > $ts;
214 group_line($self, $ng);
219 sub wildmat2re (;$) {
220 return $_[0] = qr/.*/ if (!defined $_[0] || $_[0] eq '*');
223 use Digest::SHA qw(sha1_hex);
226 $tmp =~ s#(?<!\\)\[(.+)(?<!\\)\]#
228 my $key = sha1_hex($orig . $salt);
229 $orig =~ s/([^\w\-])+/\Q$1/g;
233 my %map = ('*' => '.*', '?' => '.' );
234 $tmp =~ s#(?<!\\)([^\w\\])#$map{$1} || "\Q$1"#ge;
236 $tmp =~ s#([a-f0-9]{40})#
237 my $orig = $keep{$1};
238 defined $orig ? $orig : $1;
241 $_[0] = qr/\A$tmp\z/;
245 return $_[0] = qr/\A\z/ unless defined $_[0];
246 my %map = ('*' => '.*', ',' => '|');
247 $_[0] =~ s!(.)!$map{$1} || "\Q$1"!ge;
248 $_[0] = qr/\A(?:$_[0])\z/;
251 sub cmd_newnews ($$$$;$$) {
252 my ($self, $newsgroups, $date, $time, $gmt, $dists) = @_;
253 my $ts = eval { parse_time($date, $time, $gmt) };
255 more($self, '230 list of new articles by message-id follows');
256 my ($keep, $skip) = split('!', $newsgroups, 2);
260 foreach my $ng (@{$self->{nntpd}->{grouplist}}) {
261 $ng->{name} =~ $keep or next;
262 $ng->{name} =~ $skip and next;
263 my $srch = $ng->search or next;
266 return '.' unless @srch;
269 my $opts = { asc => 1, limit => 1000, offset => 0 };
270 $self->long_response(0, long_response_limit, sub {
273 my $res = $srch->query($ts, $opts);
274 my $msgs = $res->{msgs};
275 if (my $nr = scalar @$msgs) {
277 join(">\r\n<", map { $_->mid } @$msgs ).
279 $opts->{offset} += $nr;
282 if (@srch) { # continue onto next newsgroup
284 } else { # break out of the long response.
285 $$i = long_response_limit;
292 my ($self, $group) = @_;
293 my $no_such = '411 no such news group';
294 my $ng = $self->{nntpd}->{groups}->{$group} or return $no_such;
297 my ($min, $max) = $ng->mm->minmax;
300 $self->{article} = $min;
301 my $est_size = $max - $min;
302 "211 $est_size $min $max $group";
305 sub article_adj ($$) {
306 my ($self, $off) = @_;
307 my $ng = $self->{ng} or return '412 no newsgroup selected';
309 my $n = $self->{article};
310 defined $n or return '420 no current article has been selected';
313 my $mid = $ng->mm->mid_for($n);
315 $n = $off > 0 ? 'next' : 'previous';
316 return "421 no $n article in this group";
318 $self->{article} = $n;
319 "223 $n <$mid> article retrieved - request text separately";
322 sub cmd_next ($) { article_adj($_[0], 1) }
323 sub cmd_last ($) { article_adj($_[0], -1) }
325 # We want to encourage using email and CC-ing everybody involved to avoid
326 # the single-point-of-failure a single server provides.
329 my $ng = $self->{ng};
330 $ng ? "440 mailto:$ng->{address} to post" : '440 posting not allowed'
335 res($self, '205 closing connection - goodbye!');
340 sub art_lookup ($$$) {
341 my ($self, $art, $set_headers) = @_;
342 my $ng = $self->{ng};
346 if ($art =~ /\A\d+\z/o) {
347 $err = '423 no such article number in this group';
350 } elsif ($art =~ /\A<([^>]+)>\z/) {
353 $n = $ng->mm->num_for($mid) if $ng;
354 goto found if defined $n;
355 foreach my $g (values %{$self->{nntpd}->{groups}}) {
356 $n = $g->mm->num_for($mid);
367 $err = '420 no current article has been selected';
368 $n = $self->{article};
369 defined $n or return $err;
371 $ng or return '412 no newsgroup has been selected';
372 $mid = $ng->mm->mid_for($n);
373 defined $mid or return $err;
376 my $o = 'HEAD:' . mid2path($mid);
378 my $s = eval { Email::MIME->new($ng->gcf->cat_file($o, \$bytes)) };
379 return $err unless $s;
382 $s->header_set('Newsgroups', $ng->{name});
383 $s->header_set('Xref', xref($ng, $n));
384 $lines = $s->body =~ tr!\n!\n!;
387 $s->body_set('') if ($set_headers == 2);
389 [ $n, $mid, $s, $bytes, $lines, $ng ];
392 sub simple_body_write ($$) {
396 $body =~ s/^\./../smg;
397 $body =~ s/(?<!\r)\n/\r\n/sg;
398 do_more($self, $body);
399 do_more($self, "\r\n") unless $body =~ /\r\n\z/s;
404 my ($self, $art) = @_;
405 $self->{article} = $art if defined $art && $art =~ /\A\d+\z/;
408 sub cmd_article ($;$) {
409 my ($self, $art) = @_;
410 my $r = $self->art_lookup($art, 1);
411 return $r unless ref $r;
412 my ($n, $mid, $s) = @$r;
413 set_art($self, $art);
414 more($self, "220 $n <$mid> article retrieved - head and body follow");
415 do_more($self, $s->header_obj->as_string);
416 do_more($self, "\r\n");
417 simple_body_write($self, $s);
421 my ($self, $art) = @_;
422 my $r = $self->art_lookup($art, 2);
423 return $r unless ref $r;
424 my ($n, $mid, $s) = @$r;
425 set_art($self, $art);
426 more($self, "221 $n <$mid> article retrieved - head follows");
427 do_more($self, $s->header_obj->as_string);
432 my ($self, $art) = @_;
433 my $r = $self->art_lookup($art, 0);
434 return $r unless ref $r;
435 my ($n, $mid, $s) = @$r;
436 set_art($self, $art);
437 more($self, "222 $n <$mid> article retrieved - body follows");
438 simple_body_write($self, $s);
442 my ($self, $art) = @_;
443 my $r = $self->art_lookup($art, 0);
444 return $r unless ref $r;
445 my ($n, $mid, undef) = @$r;
446 set_art($self, $art);
447 "223 $n <$mid> article retrieved - request text separately";
450 sub cmd_ihave ($) { '435 article not wanted - do not send it' }
452 sub cmd_date ($) { '111 '.strftime('%Y%m%d%H%M%S', gmtime(time)) }
456 more($self, '100 help text follows');
461 my ($self, $range) = @_;
462 my $ng = $self->{ng} or return '412 no news group has been selected';
463 defined $range or return '420 No article(s) selected';
465 my ($min, $max) = $ng->mm->minmax;
466 if ($range =~ /\A(\d+)\z/) {
468 } elsif ($range =~ /\A(\d+)-\z/) {
469 ($beg, $end) = ($1, $max);
470 } elsif ($range =~ /\A(\d+)-(\d+)\z/) {
471 ($beg, $end) = ($1, $2);
475 $beg = $min if ($beg < $min);
476 $end = $max if ($end > $max);
477 return '420 No article(s) selected' if ($beg > $end);
482 my ($r, $header) = @_;
483 $header = lc $header;
484 return $r->[3] if ($header eq 'bytes');
485 return $r->[4] if ($header eq 'lines');
486 $r = $r->[2]->header_obj->header($header);
487 defined $r or return;
488 $r =~ s/[\r\n\t]+/ /sg;
492 sub long_response ($$$$) {
493 my ($self, $beg, $end, $cb) = @_;
494 die "BUG: nested long response" if $self->{long_res};
496 # make sure we disable reading during a long response,
497 # clients should not be sending us stuff and making us do more
498 # work while we are stream a response to them
499 $self->watch_read(0);
500 my $fd = fileno $self->{sock};
502 $self->{long_res} = sub {
503 # limit our own running time for fairness with other
504 # clients and to avoid buffering too much:
506 local $SIG{ALRM} = sub { $yield = 1 };
511 eval { $cb->(\$beg) };
512 } until (($err = $@) || $self->{closed} || $yield ||
513 $self->{write_buf_size} || ++$beg > $end);
516 if ($err || $self->{closed}) {
517 $self->{long_res} = undef;
521 "$err during long response[$fd] - %0.6f",
524 if ($self->{closed}) {
525 out($self, " deferred[$fd] aborted - %0.6f",
528 $self->watch_read(1);
530 } elsif ($yield || $self->{write_buf_size}) {
531 # no recursion, schedule another call ASAP
532 # but only after all pending writes are done
533 Danga::Socket->AddTimer(0, sub {
534 $self->write($self->{long_res});
537 $self->{long_res} = undef;
538 $self->watch_read(1);
540 out($self, " deferred[$fd] done - %0.6f", now() - $t0);
543 $self->{long_res}->(); # kick off!
547 sub hdr_message_id ($$$) { # optimize XHDR Message-ID [range] for slrnpull.
548 my ($self, $xhdr, $range) = @_;
550 if (defined $range && $range =~ /\A<(.+)>\z/) { # Message-ID
551 my ($ng, $n) = mid_lookup($self, $1);
552 return r430 unless $n;
553 hdr_mid_response($self, $xhdr, $ng, $n, $range, $range);
554 } else { # numeric range
555 $range = $self->{article} unless defined $range;
556 my $r = get_range($self, $range);
557 return $r unless ref $r;
558 my $mm = $self->{ng}->mm;
559 my ($beg, $end) = @$r;
560 more($self, '221 Header follows');
561 $self->long_response($beg, $end, sub {
563 my $mid = $mm->mid_for($$i);
564 more($self, "$$i <$mid>") if defined $mid;
571 "$ng->{domain} $ng->{name}:$n"
574 sub mid_lookup ($$) {
575 my ($self, $mid) = @_;
576 my $self_ng = $self->{ng};
578 my $n = $self_ng->mm->num_for($mid);
579 return ($self_ng, $n) if defined $n;
581 foreach my $ng (values %{$self->{nntpd}->{groups}}) {
582 next if defined $self_ng && $ng eq $self_ng;
583 my $n = $ng->mm->num_for($mid);
584 return ($ng, $n) if defined $n;
589 sub hdr_xref ($$$) { # optimize XHDR Xref [range] for rtin
590 my ($self, $xhdr, $range) = @_;
592 if (defined $range && $range =~ /\A<(.+)>\z/) { # Message-ID
593 my ($ng, $n) = mid_lookup($self, $1);
594 return r430 unless $n;
595 hdr_mid_response($self, $xhdr, $ng, $n, $range, xref($ng, $n));
596 } else { # numeric range
597 $range = $self->{article} unless defined $range;
598 my $r = get_range($self, $range);
599 return $r unless ref $r;
600 my $ng = $self->{ng};
602 my ($beg, $end) = @$r;
603 more($self, '221 Header follows');
604 $self->long_response($beg, $end, sub {
606 my $mid = $mm->mid_for($$i);
607 more($self, "$$i ".xref($ng, $$i)) if defined $mid;
613 my ($srch, $mid) = @_;
615 my $smsg = $srch->lookup_message($mid);
616 $smsg = PublicInbox::SearchMsg->load_doc($smsg->{doc});
617 $smsg->mini_mime->header_obj;
621 sub hdr_searchmsg ($$$$) {
622 my ($self, $xhdr, $hdr, $range) = @_;
624 if ($hdr eq 'date') {
627 strftime('%a, %d %b %Y %T %z', gmtime($_[0]));
631 if (defined $range && $range =~ /\A<(.+)>\z/) { # Message-ID
632 my ($ng, $n) = mid_lookup($self, $1);
633 return r430 unless $n;
634 if (my $srch = $ng->search) {
635 my $m = header_obj_for($srch, $range);
636 my $v = $m->header($hdr);
637 $v = $filter->($v) if defined $v && $filter;
638 hdr_mid_response($self, $xhdr, $ng, $n, $range, $v);
640 hdr_slow($self, $xhdr, $hdr, $range);
642 } else { # numeric range
643 $range = $self->{article} unless defined $range;
644 my $srch = $self->{ng}->search or
645 return hdr_slow($self, $xhdr, $hdr, $range);
646 my $mm = $self->{ng}->mm;
647 my $r = get_range($self, $range);
648 return $r unless ref $r;
649 my ($beg, $end) = @$r;
650 more($self, '221 Header follows');
651 $self->long_response($beg, $end, sub {
653 my $mid = $mm->mid_for($$i) or return;
654 my $m = header_obj_for($srch, $mid) or return;
655 my $v = $m->header($hdr);
656 defined $v or return;
657 $v = $filter->($v) if $filter;
658 more($self, "$$i $v");
664 my ($self, $xhdr, $header, $range) = @_;
665 my $sub = lc $header;
666 if ($sub eq 'message-id') {
667 hdr_message_id($self, $xhdr, $range);
668 } elsif ($sub eq 'xref') {
669 hdr_xref($self, $xhdr, $range);
670 } elsif ($sub =~ /\A(subject|references|date)\z/) {
671 hdr_searchmsg($self, $xhdr, $sub, $range);
673 hdr_slow($self, $xhdr, $header, $range);
679 my ($self, $header, $range) = @_;
680 do_hdr($self, 0, $header, $range);
684 sub cmd_xhdr ($$;$) {
685 my ($self, $header, $range) = @_;
686 do_hdr($self, 1, $header, $range);
689 sub hdr_mid_prefix ($$$$$) {
690 my ($self, $xhdr, $ng, $n, $mid) = @_;
691 return $mid if $xhdr;
693 # HDR for RFC 3977 users
694 if (my $self_ng = $self->{ng}) {
695 ($self_ng eq $ng) ? $n : '0';
701 sub hdr_mid_response ($$$$$$) {
702 my ($self, $xhdr, $ng, $n, $mid, $v) = @_; # r: art_lookup result
705 $res .= r221 . "\r\n";
706 $res .= "$mid $v\r\n" if defined $v;
708 $res .= r224 . "\r\n";
710 my $pfx = hdr_mid_prefix($self, $xhdr, $ng, $n, $mid);
711 $res .= "$pfx $v\r\n";
714 res($self, $res .= '.');
718 sub hdr_slow ($$$$) {
719 my ($self, $xhdr, $header, $range) = @_;
721 if (defined $range && $range =~ /\A<.+>\z/) { # Message-ID
722 my $r = $self->art_lookup($range, 2);
723 return $r unless ref $r;
724 my ($n, $ng) = ($r->[0], $r->[5]);
725 my $v = hdr_val($r, $header);
726 hdr_mid_response($self, $xhdr, $ng, $n, $range, $v);
727 } else { # numeric range
728 $range = $self->{article} unless defined $range;
729 my $r = get_range($self, $range);
730 return $r unless ref $r;
731 my ($beg, $end) = @$r;
732 more($self, $xhdr ? r221 : r224);
733 $self->long_response($beg, $end, sub {
735 $r = $self->art_lookup($$i, 2);
736 return unless ref $r;
737 defined($r = hdr_val($r, $header)) or return;
738 more($self, "$$i $r");
743 sub cmd_xrover ($;$) {
744 my ($self, $range) = @_;
745 my $ng = $self->{ng} or return '412 no newsgroup selected';
746 (defined $range && $range =~ /[<>]/) and
747 return '420 No article(s) selected'; # no message IDs
749 $range = $self->{article} unless defined $range;
750 my $r = get_range($self, $range);
751 return $r unless ref $r;
752 my ($beg, $end) = @$r;
754 my $srch = $ng->search;
755 more($self, '224 Overview information follows');
756 $self->long_response($beg, $end, sub {
758 my $mid = $mm->mid_for($$i) or return;
759 my $m = header_obj_for($srch, $mid) or return;
760 my $h = $m->header('references');
761 more($self, "$$i $h") if defined $h;
768 more($self, join("\t", $r->[0], map {
769 my $h = hdr_val($r, $_);
770 defined $h ? $h : '';
775 my ($self, $range) = @_;
776 if ($range && $range =~ /\A<.+>\z/) {
777 my $r = $self->art_lookup($range, 2);
778 return '430 No article with that message-id' unless ref $r;
779 more($self, '224 Overview information follows (multi-line)');
781 # Only set article number column if it's the current group
782 my $ng = $self->{ng};
783 $r->[0] = 0 if (!$ng || $ng ne $r->[5]);
784 over_line($self, $r);
787 cmd_xover($self, $range);
791 sub cmd_xover ($;$) {
792 my ($self, $range) = @_;
793 $range = $self->{article} unless defined $range;
794 my $r = get_range($self, $range);
795 return $r unless ref $r;
796 my ($beg, $end) = @$r;
797 more($self, "224 Overview information follows for $beg to $end");
798 $self->long_response($beg, $end, sub {
800 my $r = $self->art_lookup($$i, 2);
801 return unless ref $r;
802 over_line($self, $r);
807 my ($self, $mid) = @_;
808 return r501 unless $mid =~ /\A<(.+)>\z/;
811 foreach my $ng (values %{$self->{nntpd}->{groups}}) {
812 my $n = $ng->mm->num_for($mid);
813 push @paths, "$ng->{name}/$n" if defined $n;
815 return '430 no such article on server' unless @paths;
816 '223 '.join(' ', @paths);
820 my ($self, $line) = @_;
821 do_write($self, $line . "\r\n");
825 my ($self, $line) = @_;
826 do_more($self, $line . "\r\n");
830 my ($self, $data) = @_;
831 my $done = $self->write($data);
832 die if $self->{closed};
834 # Do not watch for readability if we have data in the queue,
835 # instead re-enable watching for readability when we can
836 $self->watch_read(0) if (!$done || $self->{long_res});
842 my ($self, $fmt, @args) = @_;
843 printf { $self->{nntpd}->{err} } $fmt."\n", @args;
847 my ($self, $fmt, @args) = @_;
848 printf { $self->{nntpd}->{out} } $fmt."\n", @args;
851 use constant MSG_MORE => ($^O eq 'linux') ? 0x8000 : 0;
854 my ($self, $data) = @_;
855 if (MSG_MORE && !$self->{write_buf_size}) {
856 my $n = send($self->{sock}, $data, MSG_MORE);
858 my $dlen = length($data);
859 return 1 if $n == $dlen; # all done!
860 $data = substr($data, $n, $dlen - $n);
863 $self->do_write($data);
866 # callbacks for by Danga::Socket
868 sub event_hup { $_[0]->close }
869 sub event_err { $_[0]->close }
873 # only continue watching for readability when we are done writing:
874 if ($self->write(undef) == 1 && !$self->{long_res}) {
875 $self->watch_read(1);
881 use constant LINE_MAX => 512; # RFC 977 section 2.3
884 my $buf = $self->read(LINE_MAX) or return $self->close;
885 $self->{rbuf} .= $$buf;
886 while ($r > 0 && $self->{rbuf} =~ s/\A\s*([^\r\n]+)\r?\n//) {
889 $r = eval { $self->process_line($line) };
890 my $d = $self->{long_res} ?
891 ' deferred['.fileno($self->{sock}).']' : '';
892 out($self, "$line - %0.6f$d", now() - $t0);
895 return $self->close if $r < 0;
896 my $len = length($self->{rbuf});
897 return $self->close if ($len >= LINE_MAX);
901 my ($self, $bool) = @_;
902 my $rv = $self->SUPER::watch_read($bool);
903 if ($bool && $self->{rbuf} ne '') {
904 # Force another read if there is a pipelined request.
905 # We don't know if the socket has anything for us to read,
906 # and we must double-check again by the time the timer fires
907 # in case we really did dispatch a read event and started
908 # another long response.
909 Danga::Socket->AddTimer(0, sub {
910 if (&Danga::Socket::POLLIN & $self->{event_watch}) {
920 ($self->{rbuf} ne '' || $self->{long_res} || $self->{write_buf_size});