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 { $_ => 1 } qw(xover list_overview_fmt newnews xhdr);
37 my ($class, $sock, $nntpd) = @_;
38 my $self = fields::new($class);
39 binmode $sock, ':utf8'; # RFC 3977
40 $self->SUPER::new($sock);
41 $self->{nntpd} = $nntpd;
42 res($self, '201 server ready - post via email');
50 my $tot = prototype $cb;
51 my ($nreq, undef) = split(';', $tot);
52 $nreq = ($nreq =~ tr/$//) - 1;
53 $tot = ($tot =~ tr/$//) - 1;
54 ($argc <= $tot && $argc >= $nreq);
57 # returns 1 if we can continue, 0 if not due to buffered writes or disconnect
58 sub process_line ($$) {
60 my ($req, @args) = split(/\s+/, $l);
64 $req = $DISABLED{$req} ? undef : *{'cmd_'.$req}{CODE};
66 return res($self, '500 command not recognized') unless $req;
67 return res($self, r501) unless args_ok($req, scalar @args);
69 my $res = eval { $req->($self, @args) };
71 if ($err && !$self->{closed}) {
72 chomp($l = Dumper(\$l));
73 err($self, "error from: $l $err");
74 $res = '503 program fault - command not performed';
76 return 0 unless defined $res;
81 my ($self, $arg) = @_;
83 return r501 unless $arg eq 'READER';
84 '201 Posting prohibited';
87 sub cmd_slave ($) { '202 slave status noted' }
89 sub cmd_xgtitle ($;$) {
90 my ($self, $wildmat) = @_;
91 more($self, '282 list of groups and descriptions follows');
92 list_newsgroups($self, $wildmat);
96 sub list_overview_fmt ($) {
98 do_more($self, $OVERVIEW_FMT);
101 sub list_headers ($;$) {
103 do_more($self, $LIST_HEADERS);
106 sub list_active ($;$) {
107 my ($self, $wildmat) = @_;
108 wildmat2re($wildmat);
109 foreach my $ng (@{$self->{nntpd}->{grouplist}}) {
110 $ng->{name} =~ $wildmat or next;
111 group_line($self, $ng);
115 sub list_active_times ($;$) {
116 my ($self, $wildmat) = @_;
117 wildmat2re($wildmat);
118 foreach my $ng (@{$self->{nntpd}->{grouplist}}) {
119 $ng->{name} =~ $wildmat or next;
120 my $c = eval { $ng->mm->created_at } || time;
121 more($self, "$ng->{name} $c $ng->{address}");
125 sub list_newsgroups ($;$) {
126 my ($self, $wildmat) = @_;
127 wildmat2re($wildmat);
128 foreach my $ng (@{$self->{nntpd}->{grouplist}}) {
129 $ng->{name} =~ $wildmat or next;
130 my $d = $ng->description;
131 more($self, "$ng->{name} $d");
135 # LIST SUBSCRIPTIONS, DISTRIB.PATS are not supported
136 sub cmd_list ($;$$) {
137 my ($self, @args) = @_;
139 my $arg = shift @args;
140 $arg =~ tr/A-Z./a-z_/;
142 return r501 if $DISABLED{$arg};
148 return r501 unless $arg && args_ok($arg, scalar @args);
149 more($self, '215 information follows');
150 $arg->($self, @args);
152 more($self, '215 list of newsgroups follows');
153 foreach my $ng (@{$self->{nntpd}->{grouplist}}) {
154 group_line($self, $ng);
160 sub cmd_listgroup ($;$) {
161 my ($self, $group) = @_;
162 if (defined $group) {
163 my $res = cmd_group($self, $group);
164 return $res if ($res !~ /\A211 /);
168 $self->{ng} or return '412 no newsgroup selected';
169 $self->long_response(0, long_response_limit, sub {
171 my $nr = $self->{ng}->mm->id_batch($$i, sub {
173 more($self, join("\r\n", @$ary));
176 # -1 to adjust for implicit increment in long_response
177 $$i = $nr ? $$i + $nr - 1 : long_response_limit;
181 sub parse_time ($$;$) {
182 my ($date, $time, $gmt) = @_;
183 use Time::Local qw();
184 my ($hh, $mm, $ss) = unpack('A2A2A2', $time);
186 $gmt =~ /\A(?:UTC|GMT)\z/i or die "GM invalid: $gmt\n";
189 my @now = $gmt ? gmtime : localtime;
190 my ($YYYY, $MM, $DD);
191 if (length($date) == 8) { # RFC 3977 allows YYYYMMDD
192 ($YYYY, $MM, $DD) = unpack('A4A2A2', $date);
193 } else { # legacy clients send YYMMDD
194 ($YYYY, $MM, $DD) = unpack('A2A2A2', $date);
195 if ($YYYY > strftime('%y', @now)) {
196 my $cur_year = $now[5] + 1900;
197 $YYYY += int($cur_year / 1000) * 1000 - 100;
201 Time::Local::timegm($ss, $mm, $hh, $DD, $MM - 1, $YYYY);
203 Time::Local::timelocal($ss, $mm, $hh, $DD, $MM - 1, $YYYY);
207 sub group_line ($$) {
208 my ($self, $ng) = @_;
209 my ($min, $max) = $ng->mm->minmax;
210 more($self, "$ng->{name} $max $min n") if defined $min && defined $max;
213 sub cmd_newgroups ($$$;$$) {
214 my ($self, $date, $time, $gmt, $dists) = @_;
215 my $ts = eval { parse_time($date, $time, $gmt) };
219 more($self, '231 list of new newsgroups follows');
220 foreach my $ng (@{$self->{nntpd}->{grouplist}}) {
221 my $c = eval { $ng->mm->created_at } || 0;
222 next unless $c > $ts;
223 group_line($self, $ng);
228 sub wildmat2re (;$) {
229 return $_[0] = qr/.*/ if (!defined $_[0] || $_[0] eq '*');
232 use Digest::SHA qw(sha1_hex);
235 $tmp =~ s#(?<!\\)\[(.+)(?<!\\)\]#
237 my $key = sha1_hex($orig . $salt);
238 $orig =~ s/([^\w\-])+/\Q$1/g;
242 my %map = ('*' => '.*', '?' => '.' );
243 $tmp =~ s#(?<!\\)([^\w\\])#$map{$1} || "\Q$1"#ge;
245 $tmp =~ s#([a-f0-9]{40})#
246 my $orig = $keep{$1};
247 defined $orig ? $orig : $1;
250 $_[0] = qr/\A$tmp\z/;
254 return $_[0] = qr/\A\z/ unless defined $_[0];
255 my %map = ('*' => '.*', ',' => '|');
256 $_[0] =~ s!(.)!$map{$1} || "\Q$1"!ge;
257 $_[0] = qr/\A(?:$_[0])\z/;
260 sub cmd_newnews ($$$$;$$) {
261 my ($self, $newsgroups, $date, $time, $gmt, $dists) = @_;
262 my $ts = eval { parse_time($date, $time, $gmt) };
264 more($self, '230 list of new articles by message-id follows');
265 my ($keep, $skip) = split('!', $newsgroups, 2);
269 foreach my $ng (@{$self->{nntpd}->{grouplist}}) {
270 $ng->{name} =~ $keep or next;
271 $ng->{name} =~ $skip and next;
272 my $srch = $ng->search or next;
275 return '.' unless @srch;
278 my $opts = { asc => 1, limit => 1000, offset => 0 };
279 $self->long_response(0, long_response_limit, sub {
282 my $res = $srch->query($ts, $opts);
283 my $msgs = $res->{msgs};
284 if (my $nr = scalar @$msgs) {
286 join(">\r\n<", map { $_->mid } @$msgs ).
288 $opts->{offset} += $nr;
291 if (@srch) { # continue onto next newsgroup
293 } else { # break out of the long response.
294 $$i = long_response_limit;
301 my ($self, $group) = @_;
302 my $no_such = '411 no such news group';
303 my $ng = $self->{nntpd}->{groups}->{$group} or return $no_such;
306 my ($min, $max) = $ng->mm->minmax;
309 $self->{article} = $min;
310 my $est_size = $max - $min;
311 "211 $est_size $min $max $group";
314 sub article_adj ($$) {
315 my ($self, $off) = @_;
316 my $ng = $self->{ng} or return '412 no newsgroup selected';
318 my $n = $self->{article};
319 defined $n or return '420 no current article has been selected';
322 my $mid = $ng->mm->mid_for($n);
324 $n = $off > 0 ? 'next' : 'previous';
325 return "421 no $n article in this group";
327 $self->{article} = $n;
328 "223 $n <$mid> article retrieved - request text separately";
331 sub cmd_next ($) { article_adj($_[0], 1) }
332 sub cmd_last ($) { article_adj($_[0], -1) }
334 # We want to encourage using email and CC-ing everybody involved to avoid
335 # the single-point-of-failure a single server provides.
338 my $ng = $self->{ng};
339 $ng ? "440 mailto:$ng->{address} to post" : '440 posting not allowed'
344 res($self, '205 closing connection - goodbye!');
349 sub art_lookup ($$$) {
350 my ($self, $art, $set_headers) = @_;
351 my $ng = $self->{ng};
355 if ($art =~ /\A\d+\z/o) {
356 $err = '423 no such article number in this group';
359 } elsif ($art =~ /\A<([^>]+)>\z/) {
362 $n = $ng->mm->num_for($mid) if $ng;
363 goto found if defined $n;
364 foreach my $g (values %{$self->{nntpd}->{groups}}) {
365 $n = $g->mm->num_for($mid);
376 $err = '420 no current article has been selected';
377 $n = $self->{article};
378 defined $n or return $err;
380 $ng or return '412 no newsgroup has been selected';
381 $mid = $ng->mm->mid_for($n);
382 defined $mid or return $err;
385 my $o = 'HEAD:' . mid2path($mid);
387 my $s = eval { Email::MIME->new($ng->gcf->cat_file($o, \$bytes)) };
388 return $err unless $s;
391 $s->header_set('Newsgroups', $ng->{name});
392 $s->header_set('Xref', xref($ng, $n));
393 $lines = $s->body =~ tr!\n!\n!;
396 $s->body_set('') if ($set_headers == 2);
398 [ $n, $mid, $s, $bytes, $lines, $ng ];
401 sub simple_body_write ($$) {
405 $body =~ s/^\./../smg;
406 $body =~ s/(?<!\r)\n/\r\n/sg;
407 do_more($self, $body);
408 do_more($self, "\r\n") unless $body =~ /\r\n\z/s;
413 my ($self, $art) = @_;
414 $self->{article} = $art if defined $art && $art =~ /\A\d+\z/;
417 sub cmd_article ($;$) {
418 my ($self, $art) = @_;
419 my $r = $self->art_lookup($art, 1);
420 return $r unless ref $r;
421 my ($n, $mid, $s) = @$r;
422 set_art($self, $art);
423 more($self, "220 $n <$mid> article retrieved - head and body follow");
424 do_more($self, $s->header_obj->as_string);
425 do_more($self, "\r\n");
426 simple_body_write($self, $s);
430 my ($self, $art) = @_;
431 my $r = $self->art_lookup($art, 2);
432 return $r unless ref $r;
433 my ($n, $mid, $s) = @$r;
434 set_art($self, $art);
435 more($self, "221 $n <$mid> article retrieved - head follows");
436 do_more($self, $s->header_obj->as_string);
441 my ($self, $art) = @_;
442 my $r = $self->art_lookup($art, 0);
443 return $r unless ref $r;
444 my ($n, $mid, $s) = @$r;
445 set_art($self, $art);
446 more($self, "222 $n <$mid> article retrieved - body follows");
447 simple_body_write($self, $s);
451 my ($self, $art) = @_;
452 my $r = $self->art_lookup($art, 0);
453 return $r unless ref $r;
454 my ($n, $mid, undef) = @$r;
455 set_art($self, $art);
456 "223 $n <$mid> article retrieved - request text separately";
459 sub cmd_ihave ($) { '435 article not wanted - do not send it' }
461 sub cmd_date ($) { '111 '.strftime('%Y%m%d%H%M%S', gmtime(time)) }
465 more($self, '100 help text follows');
470 my ($self, $range) = @_;
471 my $ng = $self->{ng} or return '412 no news group has been selected';
472 defined $range or return '420 No article(s) selected';
474 my ($min, $max) = $ng->mm->minmax;
475 if ($range =~ /\A(\d+)\z/) {
477 } elsif ($range =~ /\A(\d+)-\z/) {
478 ($beg, $end) = ($1, $max);
479 } elsif ($range =~ /\A(\d+)-(\d+)\z/) {
480 ($beg, $end) = ($1, $2);
484 $beg = $min if ($beg < $min);
485 $end = $max if ($end > $max);
486 return '420 No article(s) selected' if ($beg > $end);
491 my ($r, $header) = @_;
492 return $r->[3] if $header =~ /\A:?bytes\z/i;
493 return $r->[4] if $header =~ /\A:?lines\z/i;
494 $r = $r->[2]->header_obj->header($header);
495 defined $r or return;
496 $r =~ s/[\r\n\t]+/ /sg;
500 sub long_response ($$$$) {
501 my ($self, $beg, $end, $cb) = @_;
502 die "BUG: nested long response" if $self->{long_res};
504 my $fd = $self->{fd};
505 defined $fd or return;
506 # make sure we disable reading during a long response,
507 # clients should not be sending us stuff and making us do more
508 # work while we are stream a response to them
509 $self->watch_read(0);
511 $self->{long_res} = sub {
512 # limit our own running time for fairness with other
513 # clients and to avoid buffering too much:
518 eval { $cb->(\$beg) };
519 } until (($err = $@) || $self->{closed} ||
520 ++$beg > $end || !--$lim || $self->{write_buf_size});
522 if ($err || $self->{closed}) {
523 $self->{long_res} = undef;
527 "$err during long response[$fd] - %0.6f",
530 if ($self->{closed}) {
531 out($self, " deferred[$fd] aborted - %0.6f",
534 $self->watch_read(1);
536 } elsif (!$lim || $self->{write_buf_size}) {
537 # no recursion, schedule another call ASAP
538 # but only after all pending writes are done
539 Danga::Socket->AddTimer(0, sub {
540 $self->write($self->{long_res});
543 $self->{long_res} = undef;
544 $self->watch_read(1);
546 out($self, " deferred[$fd] done - %0.6f", now() - $t0);
549 $self->{long_res}->(); # kick off!
553 sub hdr_message_id ($$$) { # optimize XHDR Message-ID [range] for slrnpull.
554 my ($self, $xhdr, $range) = @_;
556 if (defined $range && $range =~ /\A<(.+)>\z/) { # Message-ID
557 my ($ng, $n) = mid_lookup($self, $1);
558 return r430 unless $n;
559 hdr_mid_response($self, $xhdr, $ng, $n, $range, $range);
560 } else { # numeric range
561 $range = $self->{article} unless defined $range;
562 my $r = get_range($self, $range);
563 return $r unless ref $r;
564 my $mm = $self->{ng}->mm;
565 my ($beg, $end) = @$r;
566 more($self, $xhdr ? r221 : r225);
567 $self->long_response($beg, $end, sub {
569 my $mid = $mm->mid_for($$i);
570 more($self, "$$i <$mid>") if defined $mid;
577 "$ng->{domain} $ng->{name}:$n"
580 sub mid_lookup ($$) {
581 my ($self, $mid) = @_;
582 my $self_ng = $self->{ng};
584 my $n = $self_ng->mm->num_for($mid);
585 return ($self_ng, $n) if defined $n;
587 foreach my $ng (values %{$self->{nntpd}->{groups}}) {
588 next if defined $self_ng && $ng eq $self_ng;
589 my $n = $ng->mm->num_for($mid);
590 return ($ng, $n) if defined $n;
595 sub hdr_xref ($$$) { # optimize XHDR Xref [range] for rtin
596 my ($self, $xhdr, $range) = @_;
598 if (defined $range && $range =~ /\A<(.+)>\z/) { # Message-ID
599 my ($ng, $n) = mid_lookup($self, $1);
600 return r430 unless $n;
601 hdr_mid_response($self, $xhdr, $ng, $n, $range, xref($ng, $n));
602 } else { # numeric range
603 $range = $self->{article} unless defined $range;
604 my $r = get_range($self, $range);
605 return $r unless ref $r;
606 my $ng = $self->{ng};
608 my ($beg, $end) = @$r;
609 more($self, $xhdr ? r221 : r225);
610 $self->long_response($beg, $end, sub {
612 my $mid = $mm->mid_for($$i);
613 more($self, "$$i ".xref($ng, $$i)) if defined $mid;
618 sub search_header_for {
619 my ($srch, $mid, $field) = @_;
620 my $smsg = $srch->lookup_message($mid) or return;
621 $smsg = PublicInbox::SearchMsg->load_doc($smsg->{doc});
625 sub hdr_searchmsg ($$$$) {
626 my ($self, $xhdr, $field, $range) = @_;
627 if (defined $range && $range =~ /\A<(.+)>\z/) { # Message-ID
628 my ($ng, $n) = mid_lookup($self, $1);
629 return r430 unless $n;
630 my $v = search_header_for($ng->search, $range, $field);
631 hdr_mid_response($self, $xhdr, $ng, $n, $range, $v);
632 } else { # numeric range
633 $range = $self->{article} unless defined $range;
634 my $srch = $self->{ng}->search;
635 my $mm = $self->{ng}->mm;
636 my $r = get_range($self, $range);
637 return $r unless ref $r;
638 my ($beg, $end) = @$r;
639 more($self, $xhdr ? r221 : r225);
641 $self->long_response($beg, $end, sub {
643 my $res = $srch->query_xover($beg, $end, $off);
644 my $msgs = $res->{msgs};
645 my $nr = scalar @$msgs or return;
648 foreach my $s (@$msgs) {
649 $tmp .= $s->num . ' ' . $s->$field . "\r\n";
651 do_more($self, $tmp);
652 # -1 to adjust for implicit increment in long_response
653 $$i = $nr ? $$i + $nr - 1 : long_response_limit;
659 my ($self, $xhdr, $header, $range) = @_;
660 my $sub = lc $header;
661 if ($sub eq 'message-id') {
662 hdr_message_id($self, $xhdr, $range);
663 } elsif ($sub eq 'xref') {
664 hdr_xref($self, $xhdr, $range);
665 } elsif ($sub =~ /\A(?:subject|references|date|from|to|cc|
667 hdr_searchmsg($self, $xhdr, $sub, $range);
668 } elsif ($sub =~ /\A:(bytes|lines)\z/) {
669 hdr_searchmsg($self, $xhdr, $1, $range);
671 $xhdr ? (r221 . "\r\n.") : "503 HDR not permitted on $header";
677 my ($self, $header, $range) = @_;
678 do_hdr($self, 0, $header, $range);
682 sub cmd_xhdr ($$;$) {
683 my ($self, $header, $range) = @_;
684 do_hdr($self, 1, $header, $range);
687 sub hdr_mid_prefix ($$$$$) {
688 my ($self, $xhdr, $ng, $n, $mid) = @_;
689 return $mid if $xhdr;
691 # HDR for RFC 3977 users
692 if (my $self_ng = $self->{ng}) {
693 ($self_ng eq $ng) ? $n : '0';
699 sub hdr_mid_response ($$$$$$) {
700 my ($self, $xhdr, $ng, $n, $mid, $v) = @_; # r: art_lookup result
703 $res .= r221 . "\r\n";
704 $res .= "$mid $v\r\n";
706 $res .= r225 . "\r\n";
707 my $pfx = hdr_mid_prefix($self, $xhdr, $ng, $n, $mid);
708 $res .= "$pfx $v\r\n";
710 res($self, $res .= '.');
714 sub cmd_xrover ($;$) {
715 my ($self, $range) = @_;
716 my $ng = $self->{ng} or return '412 no newsgroup selected';
717 (defined $range && $range =~ /[<>]/) and
718 return '420 No article(s) selected'; # no message IDs
720 $range = $self->{article} unless defined $range;
721 my $r = get_range($self, $range);
722 return $r unless ref $r;
723 my ($beg, $end) = @$r;
725 my $srch = $ng->search;
726 more($self, '224 Overview information follows');
727 $self->long_response($beg, $end, sub {
729 my $mid = $mm->mid_for($$i) or return;
730 my $h = search_header_for($srch, $mid, 'references');
731 more($self, "$$i $h");
736 my ($num, $smsg) = @_;
737 # n.b. field access and procedural calls can be
738 # 10%-15% faster than OO method calls:
742 PublicInbox::SearchMsg::date($smsg),
743 '<'.PublicInbox::SearchMsg::mid($smsg).'>',
745 PublicInbox::SearchMsg::bytes($smsg),
746 PublicInbox::SearchMsg::lines($smsg));
750 my ($self, $range) = @_;
751 if ($range && $range =~ /\A<(.+)>\z/) {
752 my ($ng, $n) = mid_lookup($self, $1);
753 my $smsg = $ng->search->lookup_message($range) or
754 return '430 No article with that message-id';
755 more($self, '224 Overview information follows (multi-line)');
756 $smsg = PublicInbox::SearchMsg->load_doc($smsg->{doc});
758 # Only set article number column if it's the current group
759 my $self_ng = $self->{ng};
760 $n = 0 if (!$self_ng || $self_ng ne $ng);
761 more($self, over_line($n, $smsg));
764 cmd_xover($self, $range);
768 sub cmd_xover ($;$) {
769 my ($self, $range) = @_;
770 $range = $self->{article} unless defined $range;
771 my $r = get_range($self, $range);
772 return $r unless ref $r;
773 my ($beg, $end) = @$r;
774 more($self, "224 Overview information follows for $beg to $end");
775 my $srch = $self->{ng}->search;
777 $self->long_response($beg, $end, sub {
779 my $res = $srch->query_xover($beg, $end, $off);
780 my $msgs = $res->{msgs};
781 my $nr = scalar @$msgs or return;
785 more($self, join("\r\n", map {
786 over_line(PublicInbox::SearchMsg::num($_), $_);
789 # -1 to adjust for implicit increment in long_response
790 $$i = $nr ? $$i + $nr - 1 : long_response_limit;
795 my ($self, $mid) = @_;
796 return r501 unless $mid =~ /\A<(.+)>\z/;
799 foreach my $ng (values %{$self->{nntpd}->{groups}}) {
800 my $n = $ng->mm->num_for($mid);
801 push @paths, "$ng->{name}/$n" if defined $n;
803 return '430 no such article on server' unless @paths;
804 '223 '.join(' ', @paths);
808 my ($self, $line) = @_;
809 do_write($self, $line . "\r\n");
813 my ($self, $line) = @_;
814 do_more($self, $line . "\r\n");
818 my ($self, $data) = @_;
819 my $done = $self->write($data);
820 die if $self->{closed};
822 # Do not watch for readability if we have data in the queue,
823 # instead re-enable watching for readability when we can
824 $self->watch_read(0) if (!$done || $self->{long_res});
830 my ($self, $fmt, @args) = @_;
831 printf { $self->{nntpd}->{err} } $fmt."\n", @args;
835 my ($self, $fmt, @args) = @_;
836 printf { $self->{nntpd}->{out} } $fmt."\n", @args;
839 use constant MSG_MORE => ($^O eq 'linux') ? 0x8000 : 0;
842 my ($self, $data) = @_;
843 if (MSG_MORE && !$self->{write_buf_size}) {
844 my $n = send($self->{sock}, $data, MSG_MORE);
846 my $dlen = length($data);
847 return 1 if $n == $dlen; # all done!
848 $data = substr($data, $n, $dlen - $n);
851 $self->do_write($data);
854 # callbacks for by Danga::Socket
856 sub event_hup { $_[0]->close }
857 sub event_err { $_[0]->close }
861 # only continue watching for readability when we are done writing:
862 if ($self->write(undef) == 1 && !$self->{long_res}) {
863 $self->watch_read(1);
869 use constant LINE_MAX => 512; # RFC 977 section 2.3
872 my $buf = $self->read(LINE_MAX) or return $self->close;
873 $self->{rbuf} .= $$buf;
874 while ($r > 0 && $self->{rbuf} =~ s/\A\s*([^\r\n]+)\r?\n//) {
877 my $fd = $self->{fd};
878 $r = eval { $self->process_line($line) };
879 my $d = $self->{long_res} ?
880 " deferred[$fd]" : '';
881 out($self, "[$fd] $line - %0.6f$d", now() - $t0);
884 return $self->close if $r < 0;
885 my $len = length($self->{rbuf});
886 return $self->close if ($len >= LINE_MAX);
890 my ($self, $bool) = @_;
891 my $rv = $self->SUPER::watch_read($bool);
892 if ($bool && $self->{rbuf} ne '') {
893 # Force another read if there is a pipelined request.
894 # We don't know if the socket has anything for us to read,
895 # and we must double-check again by the time the timer fires
896 # in case we really did dispatch a read event and started
897 # another long response.
898 Danga::Socket->AddTimer(0, sub {
899 if (&Danga::Socket::POLLIN & $self->{event_watch}) {
909 ($self->{rbuf} ne '' || $self->{long_res} || $self->{write_buf_size});