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 CLOCK_MONOTONIC);
16 r501 => '501 command syntax error',
17 r221 => '221 Header follows',
18 r224 => '224 Overview information follows (multi-line)',
19 r225 => '225 Headers follow (multi-line)',
20 r430 => '430 No article with that message-id',
21 long_response_limit => 0xffffffff,
24 sub now () { clock_gettime(CLOCK_MONOTONIC) };
26 my @OVERVIEW = qw(Subject From Date Message-ID References Bytes Lines);
27 my $OVERVIEW_FMT = join(":\r\n", @OVERVIEW) . ":\r\n";
28 my $LIST_HEADERS = join("\r\n", qw(Subject From Date Message-ID References
29 :bytes :lines Xref To Cc)) . "\r\n";
31 # disable commands with easy DoS potential:
32 # LISTGROUP could get pretty bad, too...
33 my %DISABLED; # = map { $_ => 1 } qw(xover list_overview_fmt newnews xhdr);
36 my ($class, $sock, $nntpd) = @_;
37 my $self = fields::new($class);
38 binmode $sock, ':utf8'; # RFC 3977
39 $self->SUPER::new($sock);
40 $self->{nntpd} = $nntpd;
41 res($self, '201 server ready - post via email');
49 my $tot = prototype $cb;
50 my ($nreq, undef) = split(';', $tot);
51 $nreq = ($nreq =~ tr/$//) - 1;
52 $tot = ($tot =~ tr/$//) - 1;
53 ($argc <= $tot && $argc >= $nreq);
56 # returns 1 if we can continue, 0 if not due to buffered writes or disconnect
57 sub process_line ($$) {
59 my ($req, @args) = split(/\s+/, $l);
63 $req = $DISABLED{$req} ? undef : *{'cmd_'.$req}{CODE};
65 return res($self, '500 command not recognized') unless $req;
66 return res($self, r501) unless args_ok($req, scalar @args);
68 my $res = eval { $req->($self, @args) };
70 if ($err && !$self->{closed}) {
71 chomp($l = Dumper(\$l));
72 err($self, "error from: $l $err");
73 $res = '503 program fault - command not performed';
75 return 0 unless defined $res;
80 my ($self, $arg) = @_;
82 return r501 unless $arg eq 'READER';
83 '201 Posting prohibited';
86 sub cmd_slave ($) { '202 slave status noted' }
88 sub cmd_xgtitle ($;$) {
89 my ($self, $wildmat) = @_;
90 more($self, '282 list of groups and descriptions follows');
91 list_newsgroups($self, $wildmat);
95 sub list_overview_fmt ($) {
97 do_more($self, $OVERVIEW_FMT);
100 sub list_headers ($;$) {
102 do_more($self, $LIST_HEADERS);
105 sub list_active ($;$) {
106 my ($self, $wildmat) = @_;
107 wildmat2re($wildmat);
108 foreach my $ng (@{$self->{nntpd}->{grouplist}}) {
109 $ng->{name} =~ $wildmat or next;
110 group_line($self, $ng);
114 sub list_active_times ($;$) {
115 my ($self, $wildmat) = @_;
116 wildmat2re($wildmat);
117 foreach my $ng (@{$self->{nntpd}->{grouplist}}) {
118 $ng->{name} =~ $wildmat or next;
119 my $c = eval { $ng->mm->created_at } || time;
120 more($self, "$ng->{name} $c $ng->{address}");
124 sub list_newsgroups ($;$) {
125 my ($self, $wildmat) = @_;
126 wildmat2re($wildmat);
127 foreach my $ng (@{$self->{nntpd}->{grouplist}}) {
128 $ng->{name} =~ $wildmat or next;
129 my $d = $ng->description;
130 more($self, "$ng->{name} $d");
134 # LIST SUBSCRIPTIONS, DISTRIB.PATS are not supported
135 sub cmd_list ($;$$) {
136 my ($self, @args) = @_;
138 my $arg = shift @args;
139 $arg =~ tr/A-Z./a-z_/;
141 return r501 if $DISABLED{$arg};
147 return r501 unless $arg && args_ok($arg, scalar @args);
148 more($self, '215 information follows');
149 $arg->($self, @args);
151 more($self, '215 list of newsgroups follows');
152 foreach my $ng (@{$self->{nntpd}->{grouplist}}) {
153 group_line($self, $ng);
159 sub cmd_listgroup ($;$) {
160 my ($self, $group) = @_;
161 if (defined $group) {
162 my $res = cmd_group($self, $group);
163 return $res if ($res !~ /\A211 /);
167 $self->{ng} or return '412 no newsgroup selected';
168 $self->long_response(0, long_response_limit, sub {
170 my $nr = $self->{ng}->mm->id_batch($$i, sub {
172 more($self, join("\r\n", @$ary));
175 # -1 to adjust for implicit increment in long_response
176 $$i = $nr ? $$i + $nr - 1 : long_response_limit;
180 sub parse_time ($$;$) {
181 my ($date, $time, $gmt) = @_;
182 use Time::Local qw();
183 my ($hh, $mm, $ss) = unpack('A2A2A2', $time);
185 $gmt =~ /\A(?:UTC|GMT)\z/i or die "GM invalid: $gmt\n";
188 my @now = $gmt ? gmtime : localtime;
189 my ($YYYY, $MM, $DD);
190 if (length($date) == 8) { # RFC 3977 allows YYYYMMDD
191 ($YYYY, $MM, $DD) = unpack('A4A2A2', $date);
192 } else { # legacy clients send YYMMDD
193 ($YYYY, $MM, $DD) = unpack('A2A2A2', $date);
194 if ($YYYY > strftime('%y', @now)) {
195 my $cur_year = $now[5] + 1900;
196 $YYYY += int($cur_year / 1000) * 1000 - 100;
200 Time::Local::timegm($ss, $mm, $hh, $DD, $MM - 1, $YYYY);
202 Time::Local::timelocal($ss, $mm, $hh, $DD, $MM - 1, $YYYY);
206 sub group_line ($$) {
207 my ($self, $ng) = @_;
208 my ($min, $max) = $ng->mm->minmax;
209 more($self, "$ng->{name} $max $min n") if defined $min && defined $max;
212 sub cmd_newgroups ($$$;$$) {
213 my ($self, $date, $time, $gmt, $dists) = @_;
214 my $ts = eval { parse_time($date, $time, $gmt) };
218 more($self, '231 list of new newsgroups follows');
219 foreach my $ng (@{$self->{nntpd}->{grouplist}}) {
220 my $c = eval { $ng->mm->created_at } || 0;
221 next unless $c > $ts;
222 group_line($self, $ng);
227 sub wildmat2re (;$) {
228 return $_[0] = qr/.*/ if (!defined $_[0] || $_[0] eq '*');
231 use Digest::SHA qw(sha1_hex);
234 $tmp =~ s#(?<!\\)\[(.+)(?<!\\)\]#
236 my $key = sha1_hex($orig . $salt);
237 $orig =~ s/([^\w\-])+/\Q$1/g;
241 my %map = ('*' => '.*', '?' => '.' );
242 $tmp =~ s#(?<!\\)([^\w\\])#$map{$1} || "\Q$1"#ge;
244 $tmp =~ s#([a-f0-9]{40})#
245 my $orig = $keep{$1};
246 defined $orig ? $orig : $1;
249 $_[0] = qr/\A$tmp\z/;
253 return $_[0] = qr/\A\z/ unless defined $_[0];
254 my %map = ('*' => '.*', ',' => '|');
255 $_[0] =~ s!(.)!$map{$1} || "\Q$1"!ge;
256 $_[0] = qr/\A(?:$_[0])\z/;
259 sub cmd_newnews ($$$$;$$) {
260 my ($self, $newsgroups, $date, $time, $gmt, $dists) = @_;
261 my $ts = eval { parse_time($date, $time, $gmt) };
263 more($self, '230 list of new articles by message-id follows');
264 my ($keep, $skip) = split('!', $newsgroups, 2);
268 foreach my $ng (@{$self->{nntpd}->{grouplist}}) {
269 $ng->{name} =~ $keep or next;
270 $ng->{name} =~ $skip and next;
271 my $srch = $ng->search or next;
274 return '.' unless @srch;
277 my $opts = { asc => 1, limit => 1000, offset => 0 };
278 $self->long_response(0, long_response_limit, sub {
281 my $res = $srch->query($ts, $opts);
282 my $msgs = $res->{msgs};
283 if (my $nr = scalar @$msgs) {
285 join(">\r\n<", map { $_->mid } @$msgs ).
287 $opts->{offset} += $nr;
290 if (@srch) { # continue onto next newsgroup
292 } else { # break out of the long response.
293 $$i = long_response_limit;
300 my ($self, $group) = @_;
301 my $no_such = '411 no such news group';
302 my $ng = $self->{nntpd}->{groups}->{$group} or return $no_such;
305 my ($min, $max) = $ng->mm->minmax;
308 $self->{article} = $min;
309 my $est_size = $max - $min;
310 "211 $est_size $min $max $group";
313 sub article_adj ($$) {
314 my ($self, $off) = @_;
315 my $ng = $self->{ng} or return '412 no newsgroup selected';
317 my $n = $self->{article};
318 defined $n or return '420 no current article has been selected';
321 my $mid = $ng->mm->mid_for($n);
323 $n = $off > 0 ? 'next' : 'previous';
324 return "421 no $n article in this group";
326 $self->{article} = $n;
327 "223 $n <$mid> article retrieved - request text separately";
330 sub cmd_next ($) { article_adj($_[0], 1) }
331 sub cmd_last ($) { article_adj($_[0], -1) }
333 # We want to encourage using email and CC-ing everybody involved to avoid
334 # the single-point-of-failure a single server provides.
337 my $ng = $self->{ng};
338 $ng ? "440 mailto:$ng->{address} to post" : '440 posting not allowed'
343 res($self, '205 closing connection - goodbye!');
348 sub art_lookup ($$$) {
349 my ($self, $art, $set_headers) = @_;
350 my $ng = $self->{ng};
354 if ($art =~ /\A\d+\z/o) {
355 $err = '423 no such article number in this group';
358 } elsif ($art =~ /\A<([^>]+)>\z/) {
361 $n = $ng->mm->num_for($mid) if $ng;
362 goto found if defined $n;
363 foreach my $g (values %{$self->{nntpd}->{groups}}) {
364 $n = $g->mm->num_for($mid);
375 $err = '420 no current article has been selected';
376 $n = $self->{article};
377 defined $n or return $err;
379 $ng or return '412 no newsgroup has been selected';
380 $mid = $ng->mm->mid_for($n);
381 defined $mid or return $err;
384 my $o = 'HEAD:' . mid2path($mid);
386 my $s = eval { Email::MIME->new($ng->gcf->cat_file($o, \$bytes)) };
387 return $err unless $s;
390 $s->header_set('Newsgroups', $ng->{name});
391 $s->header_set('Xref', xref($ng, $n));
392 $lines = $s->body =~ tr!\n!\n!;
395 $s->body_set('') if ($set_headers == 2);
397 [ $n, $mid, $s, $bytes, $lines, $ng ];
400 sub simple_body_write ($$) {
404 $body =~ s/^\./../smg;
405 $body =~ s/(?<!\r)\n/\r\n/sg;
406 do_more($self, $body);
407 do_more($self, "\r\n") unless $body =~ /\r\n\z/s;
412 my ($self, $art) = @_;
413 $self->{article} = $art if defined $art && $art =~ /\A\d+\z/;
416 sub cmd_article ($;$) {
417 my ($self, $art) = @_;
418 my $r = $self->art_lookup($art, 1);
419 return $r unless ref $r;
420 my ($n, $mid, $s) = @$r;
421 set_art($self, $art);
422 more($self, "220 $n <$mid> article retrieved - head and body follow");
423 do_more($self, $s->header_obj->as_string);
424 do_more($self, "\r\n");
425 simple_body_write($self, $s);
429 my ($self, $art) = @_;
430 my $r = $self->art_lookup($art, 2);
431 return $r unless ref $r;
432 my ($n, $mid, $s) = @$r;
433 set_art($self, $art);
434 more($self, "221 $n <$mid> article retrieved - head follows");
435 do_more($self, $s->header_obj->as_string);
440 my ($self, $art) = @_;
441 my $r = $self->art_lookup($art, 0);
442 return $r unless ref $r;
443 my ($n, $mid, $s) = @$r;
444 set_art($self, $art);
445 more($self, "222 $n <$mid> article retrieved - body follows");
446 simple_body_write($self, $s);
450 my ($self, $art) = @_;
451 my $r = $self->art_lookup($art, 0);
452 return $r unless ref $r;
453 my ($n, $mid, undef) = @$r;
454 set_art($self, $art);
455 "223 $n <$mid> article retrieved - request text separately";
458 sub cmd_ihave ($) { '435 article not wanted - do not send it' }
460 sub cmd_date ($) { '111 '.strftime('%Y%m%d%H%M%S', gmtime(time)) }
464 more($self, '100 help text follows');
469 my ($self, $range) = @_;
470 my $ng = $self->{ng} or return '412 no news group has been selected';
471 defined $range or return '420 No article(s) selected';
473 my ($min, $max) = $ng->mm->minmax;
474 if ($range =~ /\A(\d+)\z/) {
476 } elsif ($range =~ /\A(\d+)-\z/) {
477 ($beg, $end) = ($1, $max);
478 } elsif ($range =~ /\A(\d+)-(\d+)\z/) {
479 ($beg, $end) = ($1, $2);
483 $beg = $min if ($beg < $min);
484 $end = $max if ($end > $max);
485 return '420 No article(s) selected' if ($beg > $end);
490 my ($r, $header) = @_;
491 return $r->[3] if $header =~ /\A:?bytes\z/i;
492 return $r->[4] if $header =~ /\A:?lines\z/i;
493 $r = $r->[2]->header_obj->header($header);
494 defined $r or return;
495 $r =~ s/[\r\n\t]+/ /sg;
499 sub long_response ($$$$) {
500 my ($self, $beg, $end, $cb) = @_;
501 die "BUG: nested long response" if $self->{long_res};
503 my $fd = $self->{fd};
504 defined $fd or return;
505 # make sure we disable reading during a long response,
506 # clients should not be sending us stuff and making us do more
507 # work while we are stream a response to them
508 $self->watch_read(0);
510 $self->{long_res} = sub {
511 # limit our own running time for fairness with other
512 # clients and to avoid buffering too much:
517 eval { $cb->(\$beg) };
518 } until (($err = $@) || $self->{closed} ||
519 ++$beg > $end || !--$lim || $self->{write_buf_size});
521 if ($err || $self->{closed}) {
522 $self->{long_res} = undef;
526 "$err during long response[$fd] - %0.6f",
529 if ($self->{closed}) {
530 out($self, " deferred[$fd] aborted - %0.6f",
533 $self->watch_read(1);
535 } elsif (!$lim || $self->{write_buf_size}) {
536 # no recursion, schedule another call ASAP
537 # but only after all pending writes are done
538 Danga::Socket->AddTimer(0, sub {
539 $self->write($self->{long_res});
542 $self->{long_res} = undef;
543 $self->watch_read(1);
545 out($self, " deferred[$fd] done - %0.6f", now() - $t0);
548 $self->{long_res}->(); # kick off!
552 sub hdr_message_id ($$$) { # optimize XHDR Message-ID [range] for slrnpull.
553 my ($self, $xhdr, $range) = @_;
555 if (defined $range && $range =~ /\A<(.+)>\z/) { # Message-ID
556 my ($ng, $n) = mid_lookup($self, $1);
557 return r430 unless $n;
558 hdr_mid_response($self, $xhdr, $ng, $n, $range, $range);
559 } else { # numeric range
560 $range = $self->{article} unless defined $range;
561 my $r = get_range($self, $range);
562 return $r unless ref $r;
563 my $mm = $self->{ng}->mm;
564 my ($beg, $end) = @$r;
565 more($self, $xhdr ? r221 : r225);
566 $self->long_response($beg, $end, sub {
568 my $mid = $mm->mid_for($$i);
569 more($self, "$$i <$mid>") if defined $mid;
576 "$ng->{domain} $ng->{name}:$n"
579 sub mid_lookup ($$) {
580 my ($self, $mid) = @_;
581 my $self_ng = $self->{ng};
583 my $n = $self_ng->mm->num_for($mid);
584 return ($self_ng, $n) if defined $n;
586 foreach my $ng (values %{$self->{nntpd}->{groups}}) {
587 next if defined $self_ng && $ng eq $self_ng;
588 my $n = $ng->mm->num_for($mid);
589 return ($ng, $n) if defined $n;
594 sub hdr_xref ($$$) { # optimize XHDR Xref [range] for rtin
595 my ($self, $xhdr, $range) = @_;
597 if (defined $range && $range =~ /\A<(.+)>\z/) { # Message-ID
598 my ($ng, $n) = mid_lookup($self, $1);
599 return r430 unless $n;
600 hdr_mid_response($self, $xhdr, $ng, $n, $range, xref($ng, $n));
601 } else { # numeric range
602 $range = $self->{article} unless defined $range;
603 my $r = get_range($self, $range);
604 return $r unless ref $r;
605 my $ng = $self->{ng};
607 my ($beg, $end) = @$r;
608 more($self, $xhdr ? r221 : r225);
609 $self->long_response($beg, $end, sub {
611 my $mid = $mm->mid_for($$i);
612 more($self, "$$i ".xref($ng, $$i)) if defined $mid;
618 my ($srch, $mid) = @_;
620 my $smsg = $srch->lookup_message($mid);
621 $smsg = PublicInbox::SearchMsg->load_doc($smsg->{doc});
622 $smsg->mini_mime->header_obj;
626 sub hdr_searchmsg ($$$$) {
627 my ($self, $xhdr, $hdr, $range) = @_;
629 if ($hdr eq 'date') {
632 strftime('%a, %d %b %Y %T %z', gmtime($_[0]));
636 if (defined $range && $range =~ /\A<(.+)>\z/) { # Message-ID
637 my ($ng, $n) = mid_lookup($self, $1);
638 return r430 unless $n;
639 if (my $srch = $ng->search) {
640 my $m = header_obj_for($srch, $range);
641 my $v = $m->header($hdr);
642 $v = $filter->($v) if defined $v && $filter;
643 hdr_mid_response($self, $xhdr, $ng, $n, $range, $v);
645 hdr_slow($self, $xhdr, $hdr, $range);
647 } else { # numeric range
648 $range = $self->{article} unless defined $range;
649 my $srch = $self->{ng}->search or
650 return hdr_slow($self, $xhdr, $hdr, $range);
651 my $mm = $self->{ng}->mm;
652 my $r = get_range($self, $range);
653 return $r unless ref $r;
654 my ($beg, $end) = @$r;
655 more($self, $xhdr ? r221 : r225);
656 $self->long_response($beg, $end, sub {
658 my $mid = $mm->mid_for($$i) or return;
659 my $m = header_obj_for($srch, $mid) or return;
660 my $v = $m->header($hdr);
661 defined $v or return;
662 $v = $filter->($v) if $filter;
663 more($self, "$$i $v");
669 my ($self, $xhdr, $header, $range) = @_;
670 my $sub = lc $header;
671 if ($sub eq 'message-id') {
672 hdr_message_id($self, $xhdr, $range);
673 } elsif ($sub eq 'xref') {
674 hdr_xref($self, $xhdr, $range);
675 } elsif ($sub =~ /\A(subject|references|date)\z/) {
676 hdr_searchmsg($self, $xhdr, $sub, $range);
678 hdr_slow($self, $xhdr, $header, $range);
684 my ($self, $header, $range) = @_;
685 do_hdr($self, 0, $header, $range);
689 sub cmd_xhdr ($$;$) {
690 my ($self, $header, $range) = @_;
691 do_hdr($self, 1, $header, $range);
694 sub hdr_mid_prefix ($$$$$) {
695 my ($self, $xhdr, $ng, $n, $mid) = @_;
696 return $mid if $xhdr;
698 # HDR for RFC 3977 users
699 if (my $self_ng = $self->{ng}) {
700 ($self_ng eq $ng) ? $n : '0';
706 sub hdr_mid_response ($$$$$$) {
707 my ($self, $xhdr, $ng, $n, $mid, $v) = @_; # r: art_lookup result
710 $res .= r221 . "\r\n";
711 $res .= "$mid $v\r\n" if defined $v;
713 $res .= r225 . "\r\n";
715 my $pfx = hdr_mid_prefix($self, $xhdr, $ng, $n, $mid);
716 $res .= "$pfx $v\r\n";
719 res($self, $res .= '.');
723 sub hdr_slow ($$$$) {
724 my ($self, $xhdr, $header, $range) = @_;
726 if (defined $range && $range =~ /\A<.+>\z/) { # Message-ID
727 my $r = $self->art_lookup($range, 2);
728 return $r unless ref $r;
729 my ($n, $ng) = ($r->[0], $r->[5]);
730 my $v = hdr_val($r, $header);
731 hdr_mid_response($self, $xhdr, $ng, $n, $range, $v);
732 } else { # numeric range
733 $range = $self->{article} unless defined $range;
734 my $r = get_range($self, $range);
735 return $r unless ref $r;
736 my ($beg, $end) = @$r;
737 more($self, $xhdr ? r221 : r225);
738 $self->long_response($beg, $end, sub {
740 $r = $self->art_lookup($$i, 2);
741 return unless ref $r;
742 defined($r = hdr_val($r, $header)) or return;
743 more($self, "$$i $r");
748 sub cmd_xrover ($;$) {
749 my ($self, $range) = @_;
750 my $ng = $self->{ng} or return '412 no newsgroup selected';
751 (defined $range && $range =~ /[<>]/) and
752 return '420 No article(s) selected'; # no message IDs
754 $range = $self->{article} unless defined $range;
755 my $r = get_range($self, $range);
756 return $r unless ref $r;
757 my ($beg, $end) = @$r;
759 my $srch = $ng->search;
760 more($self, '224 Overview information follows');
761 $self->long_response($beg, $end, sub {
763 my $mid = $mm->mid_for($$i) or return;
764 my $m = header_obj_for($srch, $mid) or return;
765 my $h = $m->header('references');
766 more($self, "$$i $h") if defined $h;
773 more($self, join("\t", $r->[0], map {
774 my $h = hdr_val($r, $_);
775 defined $h ? $h : '';
780 my ($self, $range) = @_;
781 if ($range && $range =~ /\A<.+>\z/) {
782 my $r = $self->art_lookup($range, 2);
783 return '430 No article with that message-id' unless ref $r;
784 more($self, '224 Overview information follows (multi-line)');
786 # Only set article number column if it's the current group
787 my $ng = $self->{ng};
788 $r->[0] = 0 if (!$ng || $ng ne $r->[5]);
789 over_line($self, $r);
792 cmd_xover($self, $range);
796 sub cmd_xover ($;$) {
797 my ($self, $range) = @_;
798 $range = $self->{article} unless defined $range;
799 my $r = get_range($self, $range);
800 return $r unless ref $r;
801 my ($beg, $end) = @$r;
802 more($self, "224 Overview information follows for $beg to $end");
803 $self->long_response($beg, $end, sub {
805 my $r = $self->art_lookup($$i, 2);
806 return unless ref $r;
807 over_line($self, $r);
812 my ($self, $mid) = @_;
813 return r501 unless $mid =~ /\A<(.+)>\z/;
816 foreach my $ng (values %{$self->{nntpd}->{groups}}) {
817 my $n = $ng->mm->num_for($mid);
818 push @paths, "$ng->{name}/$n" if defined $n;
820 return '430 no such article on server' unless @paths;
821 '223 '.join(' ', @paths);
825 my ($self, $line) = @_;
826 do_write($self, $line . "\r\n");
830 my ($self, $line) = @_;
831 do_more($self, $line . "\r\n");
835 my ($self, $data) = @_;
836 my $done = $self->write($data);
837 die if $self->{closed};
839 # Do not watch for readability if we have data in the queue,
840 # instead re-enable watching for readability when we can
841 $self->watch_read(0) if (!$done || $self->{long_res});
847 my ($self, $fmt, @args) = @_;
848 printf { $self->{nntpd}->{err} } $fmt."\n", @args;
852 my ($self, $fmt, @args) = @_;
853 printf { $self->{nntpd}->{out} } $fmt."\n", @args;
856 use constant MSG_MORE => ($^O eq 'linux') ? 0x8000 : 0;
859 my ($self, $data) = @_;
860 if (MSG_MORE && !$self->{write_buf_size}) {
861 my $n = send($self->{sock}, $data, MSG_MORE);
863 my $dlen = length($data);
864 return 1 if $n == $dlen; # all done!
865 $data = substr($data, $n, $dlen - $n);
868 $self->do_write($data);
871 # callbacks for by Danga::Socket
873 sub event_hup { $_[0]->close }
874 sub event_err { $_[0]->close }
878 # only continue watching for readability when we are done writing:
879 if ($self->write(undef) == 1 && !$self->{long_res}) {
880 $self->watch_read(1);
886 use constant LINE_MAX => 512; # RFC 977 section 2.3
889 my $buf = $self->read(LINE_MAX) or return $self->close;
890 $self->{rbuf} .= $$buf;
891 while ($r > 0 && $self->{rbuf} =~ s/\A\s*([^\r\n]+)\r?\n//) {
894 my $fd = $self->{fd};
895 $r = eval { $self->process_line($line) };
896 my $d = $self->{long_res} ?
897 " deferred[$fd]" : '';
898 out($self, "[$fd] $line - %0.6f$d", now() - $t0);
901 return $self->close if $r < 0;
902 my $len = length($self->{rbuf});
903 return $self->close if ($len >= LINE_MAX);
907 my ($self, $bool) = @_;
908 my $rv = $self->SUPER::watch_read($bool);
909 if ($bool && $self->{rbuf} ne '') {
910 # Force another read if there is a pipelined request.
911 # We don't know if the socket has anything for us to read,
912 # and we must double-check again by the time the timer fires
913 # in case we really did dispatch a read event and started
914 # another long response.
915 Danga::Socket->AddTimer(0, sub {
916 if (&Danga::Socket::POLLIN & $self->{event_watch}) {
926 ($self->{rbuf} ne '' || $self->{long_res} || $self->{write_buf_size});