1 # Copyright (C) 2015-2018 all contributors <meta@public-inbox.org>
2 # License: AGPL-3.0+ <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;
12 use PublicInbox::MID qw(mid_escape);
14 require PublicInbox::EvCleanup;
16 use POSIX qw(strftime);
17 use Time::HiRes qw(clock_gettime CLOCK_MONOTONIC);
18 use Digest::SHA qw(sha1_hex);
19 use Time::Local qw(timegm timelocal);
21 r501 => '501 command syntax error',
22 r221 => '221 Header follows',
23 r224 => '224 Overview information follows (multi-line)',
24 r225 => '225 Headers follow (multi-line)',
25 r430 => '430 No article with that message-id',
26 long_response_limit => 0xffffffff,
29 sub now () { clock_gettime(CLOCK_MONOTONIC) };
31 my @OVERVIEW = qw(Subject From Date Message-ID References);
32 my $OVERVIEW_FMT = join(":\r\n", @OVERVIEW, qw(Bytes Lines)) . ":\r\n";
33 my $LIST_HEADERS = join("\r\n", @OVERVIEW,
34 qw(:bytes :lines Xref To Cc)) . "\r\n";
36 # disable commands with easy DoS potential:
37 my %DISABLED; # = map { $_ => 1 } qw(xover list_overview_fmt newnews xhdr);
39 my $EXPMAP; # fd -> [ idle_time, $self ]
41 our $EXPTIME = 180; # 3 minutes
49 foreach my $nntp (@$q) {
50 # for request && response protocols, always finish writing
51 # before finishing reading:
52 if (my $long_cb = $nntp->{long_res}) {
53 $nntp->write($long_cb);
54 } elsif (&Danga::Socket::POLLIN & $nntp->{event_watch}) {
60 sub update_idle_time ($) {
63 defined $fd and $EXPMAP->{$fd} = [ now(), $self ];
69 my $old = $now - $exp;
72 while (my ($fd, $v) = each %$EXPMAP) {
73 my ($idle_time, $nntp) = @$v;
74 if ($idle_time < $old) {
75 $nntp->close; # idempotent
83 $expt = PublicInbox::EvCleanup::later(*expire_old);
86 # noop to kick outselves out of the loop ASAP so descriptors
88 PublicInbox::EvCleanup::asap(sub {});
93 my ($class, $sock, $nntpd) = @_;
94 my $self = fields::new($class);
95 $self->SUPER::new($sock);
96 $self->{nntpd} = $nntpd;
97 res($self, '201 server ready - post via email');
100 update_idle_time($self);
101 $expt ||= PublicInbox::EvCleanup::later(*expire_old);
106 my ($cb, $argc) = @_;
107 my $tot = prototype $cb;
108 my ($nreq, undef) = split(';', $tot);
109 $nreq = ($nreq =~ tr/$//) - 1;
110 $tot = ($tot =~ tr/$//) - 1;
111 ($argc <= $tot && $argc >= $nreq);
114 # returns 1 if we can continue, 0 if not due to buffered writes or disconnect
115 sub process_line ($$) {
117 my ($req, @args) = split(/\s+/, $l);
121 $req = $DISABLED{$req} ? undef : *{'cmd_'.$req}{CODE};
123 return res($self, '500 command not recognized') unless $req;
124 return res($self, r501) unless args_ok($req, scalar @args);
126 my $res = eval { $req->($self, @args) };
128 if ($err && !$self->{closed}) {
131 err($self, 'error from: %s (%s)', $l, $err);
132 $res = '503 program fault - command not performed';
134 return 0 unless defined $res;
139 my ($self, $arg) = @_;
141 return r501 unless $arg eq 'READER';
142 '201 Posting prohibited';
145 sub cmd_slave ($) { '202 slave status noted' }
147 sub cmd_xgtitle ($;$) {
148 my ($self, $wildmat) = @_;
149 more($self, '282 list of groups and descriptions follows');
150 list_newsgroups($self, $wildmat);
154 sub list_overview_fmt ($) {
156 do_more($self, $OVERVIEW_FMT);
159 sub list_headers ($;$) {
161 do_more($self, $LIST_HEADERS);
164 sub list_active ($;$) {
165 my ($self, $wildmat) = @_;
166 wildmat2re($wildmat);
167 foreach my $ng (@{$self->{nntpd}->{grouplist}}) {
168 $ng->{newsgroup} =~ $wildmat or next;
169 group_line($self, $ng);
173 sub list_active_times ($;$) {
174 my ($self, $wildmat) = @_;
175 wildmat2re($wildmat);
176 foreach my $ng (@{$self->{nntpd}->{grouplist}}) {
177 $ng->{newsgroup} =~ $wildmat or next;
178 my $c = eval { $ng->mm->created_at } || time;
179 more($self, "$ng->{newsgroup} $c $ng->{-primary_address}");
183 sub list_newsgroups ($;$) {
184 my ($self, $wildmat) = @_;
185 wildmat2re($wildmat);
186 foreach my $ng (@{$self->{nntpd}->{grouplist}}) {
187 $ng->{newsgroup} =~ $wildmat or next;
188 my $d = $ng->description;
189 more($self, "$ng->{newsgroup} $d");
193 # LIST SUBSCRIPTIONS, DISTRIB.PATS are not supported
194 sub cmd_list ($;$$) {
195 my ($self, @args) = @_;
197 my $arg = shift @args;
198 $arg =~ tr/A-Z./a-z_/;
200 return r501 if $DISABLED{$arg};
206 return r501 unless $arg && args_ok($arg, scalar @args);
207 more($self, '215 information follows');
208 $arg->($self, @args);
210 more($self, '215 list of newsgroups follows');
211 foreach my $ng (@{$self->{nntpd}->{grouplist}}) {
212 group_line($self, $ng);
218 sub cmd_listgroup ($;$) {
219 my ($self, $group) = @_;
220 if (defined $group) {
221 my $res = cmd_group($self, $group);
222 return $res if ($res !~ /\A211 /);
226 $self->{ng} or return '412 no newsgroup selected';
228 long_response($self, sub {
229 my $ary = $self->{ng}->mm->ids_after(\$n);
230 scalar @$ary or return;
231 more($self, join("\r\n", @$ary));
236 sub parse_time ($$;$) {
237 my ($date, $time, $gmt) = @_;
238 my ($hh, $mm, $ss) = unpack('A2A2A2', $time);
240 $gmt =~ /\A(?:UTC|GMT)\z/i or die "GM invalid: $gmt";
243 my @now = $gmt ? gmtime : localtime;
244 my ($YYYY, $MM, $DD);
245 if (length($date) == 8) { # RFC 3977 allows YYYYMMDD
246 ($YYYY, $MM, $DD) = unpack('A4A2A2', $date);
247 } else { # legacy clients send YYMMDD
248 ($YYYY, $MM, $DD) = unpack('A2A2A2', $date);
249 my $cur_year = $now[5] + 1900;
250 if ($YYYY > $cur_year) {
251 $YYYY += int($cur_year / 1000) * 1000 - 100;
255 timegm($ss, $mm, $hh, $DD, $MM - 1, $YYYY);
257 timelocal($ss, $mm, $hh, $DD, $MM - 1, $YYYY);
261 sub group_line ($$) {
262 my ($self, $ng) = @_;
263 my ($min, $max) = $ng->mm->minmax;
264 more($self, "$ng->{newsgroup} $max $min n") if defined $min && defined $max;
267 sub cmd_newgroups ($$$;$$) {
268 my ($self, $date, $time, $gmt, $dists) = @_;
269 my $ts = eval { parse_time($date, $time, $gmt) };
273 more($self, '231 list of new newsgroups follows');
274 foreach my $ng (@{$self->{nntpd}->{grouplist}}) {
275 my $c = eval { $ng->mm->created_at } || 0;
276 next unless $c > $ts;
277 group_line($self, $ng);
282 sub wildmat2re (;$) {
283 return $_[0] = qr/.*/ if (!defined $_[0] || $_[0] eq '*');
288 $tmp =~ s#(?<!\\)\[(.+)(?<!\\)\]#
290 my $key = sha1_hex($orig . $salt);
291 $orig =~ s/([^\w\-])+/\Q$1/g;
295 my %map = ('*' => '.*', '?' => '.' );
296 $tmp =~ s#(?<!\\)([^\w\\])#$map{$1} || "\Q$1"#ge;
298 $tmp =~ s#([a-f0-9]{40})#
299 my $orig = $keep{$1};
300 defined $orig ? $orig : $1;
303 $_[0] = qr/\A$tmp\z/;
307 return $_[0] = qr/\A\z/ unless defined $_[0];
308 my %map = ('*' => '.*', ',' => '|');
309 $_[0] =~ s!(.)!$map{$1} || "\Q$1"!ge;
310 $_[0] = qr/\A(?:$_[0])\z/;
313 sub cmd_newnews ($$$$;$$) {
314 my ($self, $newsgroups, $date, $time, $gmt, $dists) = @_;
315 my $ts = eval { parse_time($date, $time, $gmt) };
317 more($self, '230 list of new articles by message-id follows');
318 my ($keep, $skip) = split('!', $newsgroups, 2);
322 foreach my $ng (@{$self->{nntpd}->{grouplist}}) {
323 $ng->{newsgroup} =~ $keep or next;
324 $ng->{newsgroup} =~ $skip and next;
325 my $srch = $ng->search or next;
328 return '.' unless @srch;
331 long_response($self, sub {
333 my $msgs = $srch->query_ts($ts, $prev);
336 join(">\r\n<", map { $_->mid } @$msgs ).
338 $prev = $msgs->[-1]->{num};
341 if (@srch) { # continue onto next newsgroup
344 } else { # break out of the long response.
352 my ($self, $group) = @_;
353 my $no_such = '411 no such news group';
354 my $ng = $self->{nntpd}->{groups}->{$group} or return $no_such;
357 my ($min, $max) = $ng->mm->minmax;
360 $self->{article} = $min;
361 my $est_size = $max - $min;
362 "211 $est_size $min $max $group";
365 sub article_adj ($$) {
366 my ($self, $off) = @_;
367 my $ng = $self->{ng} or return '412 no newsgroup selected';
369 my $n = $self->{article};
370 defined $n or return '420 no current article has been selected';
373 my $mid = $ng->mm->mid_for($n);
375 $n = $off > 0 ? 'next' : 'previous';
376 return "421 no $n article in this group";
378 $self->{article} = $n;
379 "223 $n <$mid> article retrieved - request text separately";
382 sub cmd_next ($) { article_adj($_[0], 1) }
383 sub cmd_last ($) { article_adj($_[0], -1) }
385 # We want to encourage using email and CC-ing everybody involved to avoid
386 # the single-point-of-failure a single server provides.
389 my $ng = $self->{ng};
390 $ng ? "440 mailto:$ng->{-primary_address} to post"
391 : '440 posting not allowed'
396 res($self, '205 closing connection - goodbye!');
401 sub header_append ($$$) {
402 my ($hdr, $k, $v) = @_;
403 my @v = $hdr->header($k);
407 $hdr->header_set($k, @v, $v);
410 sub set_nntp_headers {
411 my ($hdr, $ng, $n, $mid) = @_;
414 $hdr->header_set('Newsgroups', $ng->{newsgroup});
415 $hdr->header_set('Xref', xref($ng, $n));
416 header_append($hdr, 'List-Post', "<mailto:$ng->{-primary_address}>");
417 if (my $url = $ng->base_url) {
418 $mid = mid_escape($mid);
419 header_append($hdr, 'Archived-At', "<$url$mid/>");
420 header_append($hdr, 'List-Archive', "<$url>");
424 sub art_lookup ($$$) {
425 my ($self, $art, $set_headers) = @_;
426 my $ng = $self->{ng};
430 if ($art =~ /\A\d+\z/o) {
431 $err = '423 no such article number in this group';
434 } elsif ($art =~ /\A<([^>]+)>\z/) {
437 $n = $ng->mm->num_for($mid) if $ng;
438 goto found if defined $n;
439 foreach my $g (values %{$self->{nntpd}->{groups}}) {
440 $n = $g->mm->num_for($mid);
451 $err = '420 no current article has been selected';
452 $n = $self->{article};
453 defined $n or return $err;
455 $ng or return '412 no newsgroup has been selected';
456 $mid = $ng->mm->mid_for($n);
457 defined $mid or return $err;
460 my $smsg = $ng->search->{over_ro}->get_art($n) or return $err;
461 my $msg = $ng->msg_by_smsg($smsg) or return $err;
462 my $s = Email::Simple->new($msg);
464 set_nntp_headers($s->header_obj, $ng, $n, $mid);
467 $s->body_set('') if ($set_headers == 2);
469 [ $n, $mid, $s, $smsg->bytes, $smsg->lines, $ng ];
472 sub simple_body_write ($$) {
476 $body =~ s/^\./../smg;
477 $body =~ s/(?<!\r)\n/\r\n/sg;
478 do_more($self, $body);
479 do_more($self, "\r\n") unless $body =~ /\r\n\z/s;
484 my ($self, $art) = @_;
485 $self->{article} = $art if defined $art && $art =~ /\A\d+\z/;
489 my $hdr = $_[0]->header_obj->as_string;
494 sub cmd_article ($;$) {
495 my ($self, $art) = @_;
496 my $r = art_lookup($self, $art, 1);
497 return $r unless ref $r;
498 my ($n, $mid, $s) = @$r;
499 set_art($self, $art);
500 more($self, "220 $n <$mid> article retrieved - head and body follow");
501 do_more($self, _header($s));
502 do_more($self, "\r\n");
503 simple_body_write($self, $s);
507 my ($self, $art) = @_;
508 my $r = art_lookup($self, $art, 2);
509 return $r unless ref $r;
510 my ($n, $mid, $s) = @$r;
511 set_art($self, $art);
512 more($self, "221 $n <$mid> article retrieved - head follows");
513 do_more($self, _header($s));
518 my ($self, $art) = @_;
519 my $r = art_lookup($self, $art, 0);
520 return $r unless ref $r;
521 my ($n, $mid, $s) = @$r;
522 set_art($self, $art);
523 more($self, "222 $n <$mid> article retrieved - body follows");
524 simple_body_write($self, $s);
528 my ($self, $art) = @_;
529 my $r = art_lookup($self, $art, 0);
530 return $r unless ref $r;
531 my ($n, $mid, undef) = @$r;
532 set_art($self, $art);
533 "223 $n <$mid> article retrieved - request text separately";
536 sub cmd_ihave ($) { '435 article not wanted - do not send it' }
538 sub cmd_date ($) { '111 '.strftime('%Y%m%d%H%M%S', gmtime(time)) }
542 more($self, '100 help text follows');
547 my ($self, $range) = @_;
548 my $ng = $self->{ng} or return '412 no news group has been selected';
549 defined $range or return '420 No article(s) selected';
551 my ($min, $max) = $ng->mm->minmax;
552 if ($range =~ /\A(\d+)\z/) {
554 } elsif ($range =~ /\A(\d+)-\z/) {
555 ($beg, $end) = ($1, $max);
556 } elsif ($range =~ /\A(\d+)-(\d+)\z/) {
557 ($beg, $end) = ($1, $2);
561 $beg = $min if ($beg < $min);
562 $end = $max if ($end > $max);
563 return '420 No article(s) selected' if ($beg > $end);
567 sub long_response ($$) {
568 my ($self, $cb) = @_;
569 die "BUG: nested long response" if $self->{long_res};
571 my $fd = $self->{fd};
572 defined $fd or return;
573 # make sure we disable reading during a long response,
574 # clients should not be sending us stuff and making us do more
575 # work while we are stream a response to them
576 $self->watch_read(0);
578 $self->{long_res} = sub {
579 my $more = eval { $cb->() };
580 if ($@ || $self->{closed}) {
581 $self->{long_res} = undef;
585 "%s during long response[$fd] - %0.6f",
588 if ($self->{closed}) {
589 out($self, " deferred[$fd] aborted - %0.6f",
592 update_idle_time($self);
593 $self->watch_read(1);
595 } elsif ($more) { # $self->{write_buf_size}:
596 # no recursion, schedule another call ASAP
597 # but only after all pending writes are done
598 update_idle_time($self);
601 $nextt ||= PublicInbox::EvCleanup::asap(*next_tick);
603 $self->{long_res} = undef;
604 $self->watch_read(1);
606 out($self, " deferred[$fd] done - %0.6f", now() - $t0);
609 $self->{long_res}->(); # kick off!
613 sub hdr_message_id ($$$) { # optimize XHDR Message-ID [range] for slrnpull.
614 my ($self, $xhdr, $range) = @_;
616 if (defined $range && $range =~ /\A<(.+)>\z/) { # Message-ID
617 my ($ng, $n) = mid_lookup($self, $1);
618 return r430 unless $n;
619 hdr_mid_response($self, $xhdr, $ng, $n, $range, $range);
620 } else { # numeric range
621 $range = $self->{article} unless defined $range;
622 my $r = get_range($self, $range);
623 return $r unless ref $r;
624 my $mm = $self->{ng}->mm;
625 my ($beg, $end) = @$r;
626 more($self, $xhdr ? r221 : r225);
627 long_response($self, sub {
628 my $r = $mm->msg_range(\$beg, $end);
630 more($self, join("\r\n", map {
640 "$ng->{domain} $ng->{newsgroup}:$n"
643 sub mid_lookup ($$) {
644 my ($self, $mid) = @_;
645 my $self_ng = $self->{ng};
647 my $n = $self_ng->mm->num_for($mid);
648 return ($self_ng, $n) if defined $n;
650 foreach my $ng (values %{$self->{nntpd}->{groups}}) {
651 next if defined $self_ng && $ng eq $self_ng;
652 my $n = $ng->mm->num_for($mid);
653 return ($ng, $n) if defined $n;
658 sub hdr_xref ($$$) { # optimize XHDR Xref [range] for rtin
659 my ($self, $xhdr, $range) = @_;
661 if (defined $range && $range =~ /\A<(.+)>\z/) { # Message-ID
662 my ($ng, $n) = mid_lookup($self, $1);
663 return r430 unless $n;
664 hdr_mid_response($self, $xhdr, $ng, $n, $range, xref($ng, $n));
665 } else { # numeric range
666 $range = $self->{article} unless defined $range;
667 my $r = get_range($self, $range);
668 return $r unless ref $r;
669 my $ng = $self->{ng};
671 my ($beg, $end) = @$r;
672 more($self, $xhdr ? r221 : r225);
673 long_response($self, sub {
674 my $r = $mm->msg_range(\$beg, $end);
676 more($self, join("\r\n", map {
677 # TODO: use $_->[1] (mid) to fill
678 # Xref: from other inboxes
680 "$num ".xref($ng, $num);
687 sub search_header_for {
688 my ($srch, $num, $field) = @_;
689 my $smsg = $srch->{over_ro}->get_art($num) or return;
690 return PublicInbox::SearchMsg::date($smsg) if $field eq 'date';
694 sub hdr_searchmsg ($$$$) {
695 my ($self, $xhdr, $field, $range) = @_;
696 if (defined $range && $range =~ /\A<(.+)>\z/) { # Message-ID
697 my ($ng, $n) = mid_lookup($self, $1);
698 return r430 unless defined $n;
699 my $v = search_header_for($ng->search, $n, $field);
700 hdr_mid_response($self, $xhdr, $ng, $n, $range, $v);
701 } else { # numeric range
702 $range = $self->{article} unless defined $range;
703 my $srch = $self->{ng}->search;
704 my $mm = $self->{ng}->mm;
705 my $r = get_range($self, $range);
706 return $r unless ref $r;
707 my ($beg, $end) = @$r;
708 more($self, $xhdr ? r221 : r225);
710 long_response($self, sub {
711 my $msgs = $srch->query_xover($cur, $end);
712 my $nr = scalar @$msgs or return;
714 foreach my $s (@$msgs) {
715 $tmp .= $s->num . ' ' . $s->$field . "\r\n";
718 do_more($self, $tmp);
719 $cur = $msgs->[-1]->{num} + 1;
725 my ($self, $xhdr, $header, $range) = @_;
726 my $sub = lc $header;
727 if ($sub eq 'message-id') {
728 hdr_message_id($self, $xhdr, $range);
729 } elsif ($sub eq 'xref') {
730 hdr_xref($self, $xhdr, $range);
731 } elsif ($sub =~ /\A(?:subject|references|date|from|to|cc|
733 hdr_searchmsg($self, $xhdr, $sub, $range);
734 } elsif ($sub =~ /\A:(bytes|lines)\z/) {
735 hdr_searchmsg($self, $xhdr, $1, $range);
737 $xhdr ? (r221 . "\r\n.") : "503 HDR not permitted on $header";
743 my ($self, $header, $range) = @_;
744 do_hdr($self, 0, $header, $range);
748 sub cmd_xhdr ($$;$) {
749 my ($self, $header, $range) = @_;
750 do_hdr($self, 1, $header, $range);
753 sub hdr_mid_prefix ($$$$$) {
754 my ($self, $xhdr, $ng, $n, $mid) = @_;
755 return $mid if $xhdr;
757 # HDR for RFC 3977 users
758 if (my $self_ng = $self->{ng}) {
759 ($self_ng eq $ng) ? $n : '0';
765 sub hdr_mid_response ($$$$$$) {
766 my ($self, $xhdr, $ng, $n, $mid, $v) = @_; # r: art_lookup result
769 $res .= r221 . "\r\n";
770 $res .= "$mid $v\r\n";
772 $res .= r225 . "\r\n";
773 my $pfx = hdr_mid_prefix($self, $xhdr, $ng, $n, $mid);
774 $res .= "$pfx $v\r\n";
776 res($self, $res .= '.');
780 sub cmd_xrover ($;$) {
781 my ($self, $range) = @_;
782 my $ng = $self->{ng} or return '412 no newsgroup selected';
783 (defined $range && $range =~ /[<>]/) and
784 return '420 No article(s) selected'; # no message IDs
786 $range = $self->{article} unless defined $range;
787 my $r = get_range($self, $range);
788 return $r unless ref $r;
789 my ($beg, $end) = @$r;
791 my $srch = $ng->search;
792 more($self, '224 Overview information follows');
794 long_response($self, sub {
795 my $h = search_header_for($srch, $beg, 'references');
796 more($self, "$beg $h") if defined($h);
802 my ($num, $smsg) = @_;
803 # n.b. field access and procedural calls can be
804 # 10%-15% faster than OO method calls:
805 my $s = join("\t", $num,
808 PublicInbox::SearchMsg::date($smsg),
818 my ($self, $range) = @_;
819 if ($range && $range =~ /\A<(.+)>\z/) {
820 my ($ng, $n) = mid_lookup($self, $1);
821 defined $n or return r430;
822 my $smsg = $ng->search->{over_ro}->get_art($n) or return r430;
823 more($self, '224 Overview information follows (multi-line)');
825 # Only set article number column if it's the current group
826 my $self_ng = $self->{ng};
827 $n = 0 if (!$self_ng || $self_ng ne $ng);
828 more($self, over_line($n, $smsg));
831 cmd_xover($self, $range);
835 sub cmd_xover ($;$) {
836 my ($self, $range) = @_;
837 $range = $self->{article} unless defined $range;
838 my $r = get_range($self, $range);
839 return $r unless ref $r;
840 my ($beg, $end) = @$r;
841 more($self, "224 Overview information follows for $beg to $end");
842 my $srch = $self->{ng}->search;
844 long_response($self, sub {
845 my $msgs = $srch->query_xover($cur, $end);
846 my $nr = scalar @$msgs or return;
849 more($self, join("\r\n", map {
850 over_line($_->{num}, $_);
852 $cur = $msgs->[-1]->{num} + 1;
857 my ($self, $mid) = @_;
858 return r501 unless $mid =~ /\A<(.+)>\z/;
861 foreach my $ng (values %{$self->{nntpd}->{groups}}) {
862 my $n = $ng->mm->num_for($mid);
863 push @paths, "$ng->{newsgroup}/$n" if defined $n;
865 return '430 no such article on server' unless @paths;
866 '223 '.join(' ', @paths);
870 my ($self, $line) = @_;
871 do_write($self, $line . "\r\n");
875 my ($self, $line) = @_;
876 do_more($self, $line . "\r\n");
880 my ($self, $data) = @_;
881 my $done = $self->write($data);
882 return if $self->{closed};
884 # Do not watch for readability if we have data in the queue,
885 # instead re-enable watching for readability when we can
886 $self->watch_read(0) if (!$done || $self->{long_res});
892 my ($self, $fmt, @args) = @_;
893 printf { $self->{nntpd}->{err} } $fmt."\n", @args;
897 my ($self, $fmt, @args) = @_;
898 printf { $self->{nntpd}->{out} } $fmt."\n", @args;
901 use constant MSG_MORE => ($^O eq 'linux') ? 0x8000 : 0;
904 my ($self, $data) = @_;
905 if (MSG_MORE && !$self->{write_buf_size}) {
906 my $n = send($self->{sock}, $data, MSG_MORE);
908 my $dlen = length($data);
909 return 1 if $n == $dlen; # all done!
910 $data = substr($data, $n, $dlen - $n);
913 do_write($self, $data);
916 # callbacks for Danga::Socket
918 sub event_hup { $_[0]->close }
919 sub event_err { $_[0]->close }
923 update_idle_time($self);
924 # only continue watching for readability when we are done writing:
925 if ($self->write(undef) == 1 && !$self->{long_res}) {
926 $self->watch_read(1);
932 use constant LINE_MAX => 512; # RFC 977 section 2.3
935 my $buf = $self->read(LINE_MAX) or return $self->close;
936 $self->{rbuf} .= $$buf;
937 while ($r > 0 && $self->{rbuf} =~ s/\A\s*([^\r\n]+)\r?\n//) {
939 return $self->close if $line =~ /[[:cntrl:]]/s;
941 my $fd = $self->{fd};
942 $r = eval { process_line($self, $line) };
943 my $d = $self->{long_res} ?
944 " deferred[$fd]" : '';
945 out($self, "[$fd] %s - %0.6f$d", $line, now() - $t0);
948 return $self->close if $r < 0;
949 my $len = length($self->{rbuf});
950 return $self->close if ($len >= LINE_MAX);
951 update_idle_time($self);
955 my ($self, $bool) = @_;
956 my $rv = $self->SUPER::watch_read($bool);
957 if ($bool && $self->{rbuf} ne '') {
958 # Force another read if there is a pipelined request.
959 # We don't know if the socket has anything for us to read,
960 # and we must double-check again by the time the timer fires
961 # in case we really did dispatch a read event and started
962 # another long response.
964 $nextt ||= PublicInbox::EvCleanup::asap(*next_tick);
969 sub not_idle_long ($$) {
970 my ($self, $now) = @_;
971 defined(my $fd = $self->{fd}) or return;
972 my $ary = $EXPMAP->{$fd} or return;
973 my $exp_at = $ary->[0] + $EXPTIME;
977 # for graceful shutdown in PublicInbox::Daemon:
979 my ($self, $now) = @_;
980 ($self->{rbuf} ne '' || $self->{long_res} || $self->{write_buf_size} ||
981 not_idle_long($self, $now));