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 ($$) {
117 my ($req, @args) = split(/\s+/, $l);
118 return unless defined($req);
122 $req = $DISABLED{$req} ? undef : *{'cmd_'.$req}{CODE};
124 return res($self, '500 command not recognized') unless $req;
125 return res($self, r501) unless args_ok($req, scalar @args);
127 my $res = eval { $req->($self, @args) };
129 if ($err && !$self->{closed}) {
132 err($self, 'error from: %s (%s)', $l, $err);
133 $res = '503 program fault - command not performed';
135 return 0 unless defined $res;
140 my ($self, $arg) = @_;
142 return r501 unless $arg eq 'READER';
143 '201 Posting prohibited';
146 sub cmd_slave ($) { '202 slave status noted' }
148 sub cmd_xgtitle ($;$) {
149 my ($self, $wildmat) = @_;
150 more($self, '282 list of groups and descriptions follows');
151 list_newsgroups($self, $wildmat);
155 sub list_overview_fmt ($) {
157 do_more($self, $OVERVIEW_FMT);
160 sub list_headers ($;$) {
162 do_more($self, $LIST_HEADERS);
165 sub list_active ($;$) {
166 my ($self, $wildmat) = @_;
167 wildmat2re($wildmat);
168 foreach my $ng (@{$self->{nntpd}->{grouplist}}) {
169 $ng->{newsgroup} =~ $wildmat or next;
170 group_line($self, $ng);
174 sub list_active_times ($;$) {
175 my ($self, $wildmat) = @_;
176 wildmat2re($wildmat);
177 foreach my $ng (@{$self->{nntpd}->{grouplist}}) {
178 $ng->{newsgroup} =~ $wildmat or next;
179 my $c = eval { $ng->mm->created_at } || time;
180 more($self, "$ng->{newsgroup} $c $ng->{-primary_address}");
184 sub list_newsgroups ($;$) {
185 my ($self, $wildmat) = @_;
186 wildmat2re($wildmat);
187 foreach my $ng (@{$self->{nntpd}->{grouplist}}) {
188 $ng->{newsgroup} =~ $wildmat or next;
189 my $d = $ng->description;
190 more($self, "$ng->{newsgroup} $d");
194 # LIST SUBSCRIPTIONS, DISTRIB.PATS are not supported
195 sub cmd_list ($;$$) {
196 my ($self, @args) = @_;
198 my $arg = shift @args;
199 $arg =~ tr/A-Z./a-z_/;
201 return r501 if $DISABLED{$arg};
207 return r501 unless $arg && args_ok($arg, scalar @args);
208 more($self, '215 information follows');
209 $arg->($self, @args);
211 more($self, '215 list of newsgroups follows');
212 foreach my $ng (@{$self->{nntpd}->{grouplist}}) {
213 group_line($self, $ng);
219 sub cmd_listgroup ($;$) {
220 my ($self, $group) = @_;
221 if (defined $group) {
222 my $res = cmd_group($self, $group);
223 return $res if ($res !~ /\A211 /);
227 $self->{ng} or return '412 no newsgroup selected';
229 long_response($self, sub {
230 my $ary = $self->{ng}->mm->ids_after(\$n);
231 scalar @$ary or return;
232 more($self, join("\r\n", @$ary));
237 sub parse_time ($$;$) {
238 my ($date, $time, $gmt) = @_;
239 my ($hh, $mm, $ss) = unpack('A2A2A2', $time);
241 $gmt =~ /\A(?:UTC|GMT)\z/i or die "GM invalid: $gmt";
244 my @now = $gmt ? gmtime : localtime;
245 my ($YYYY, $MM, $DD);
246 if (length($date) == 8) { # RFC 3977 allows YYYYMMDD
247 ($YYYY, $MM, $DD) = unpack('A4A2A2', $date);
248 } else { # legacy clients send YYMMDD
249 ($YYYY, $MM, $DD) = unpack('A2A2A2', $date);
250 my $cur_year = $now[5] + 1900;
251 if ($YYYY > $cur_year) {
252 $YYYY += int($cur_year / 1000) * 1000 - 100;
256 timegm($ss, $mm, $hh, $DD, $MM - 1, $YYYY);
258 timelocal($ss, $mm, $hh, $DD, $MM - 1, $YYYY);
262 sub group_line ($$) {
263 my ($self, $ng) = @_;
264 my ($min, $max) = $ng->mm->minmax;
265 more($self, "$ng->{newsgroup} $max $min n") if defined $min && defined $max;
268 sub cmd_newgroups ($$$;$$) {
269 my ($self, $date, $time, $gmt, $dists) = @_;
270 my $ts = eval { parse_time($date, $time, $gmt) };
274 more($self, '231 list of new newsgroups follows');
275 foreach my $ng (@{$self->{nntpd}->{grouplist}}) {
276 my $c = eval { $ng->mm->created_at } || 0;
277 next unless $c > $ts;
278 group_line($self, $ng);
283 sub wildmat2re (;$) {
284 return $_[0] = qr/.*/ if (!defined $_[0] || $_[0] eq '*');
289 $tmp =~ s#(?<!\\)\[(.+)(?<!\\)\]#
291 my $key = sha1_hex($orig . $salt);
292 $orig =~ s/([^\w\-])+/\Q$1/g;
296 my %map = ('*' => '.*', '?' => '.' );
297 $tmp =~ s#(?<!\\)([^\w\\])#$map{$1} || "\Q$1"#ge;
299 $tmp =~ s#([a-f0-9]{40})#
300 my $orig = $keep{$1};
301 defined $orig ? $orig : $1;
304 $_[0] = qr/\A$tmp\z/;
308 return $_[0] = qr/\A\z/ unless defined $_[0];
309 my %map = ('*' => '.*', ',' => '|');
310 $_[0] =~ s!(.)!$map{$1} || "\Q$1"!ge;
311 $_[0] = qr/\A(?:$_[0])\z/;
314 sub cmd_newnews ($$$$;$$) {
315 my ($self, $newsgroups, $date, $time, $gmt, $dists) = @_;
316 my $ts = eval { parse_time($date, $time, $gmt) };
318 more($self, '230 list of new articles by message-id follows');
319 my ($keep, $skip) = split('!', $newsgroups, 2);
323 foreach my $ng (@{$self->{nntpd}->{grouplist}}) {
324 $ng->{newsgroup} =~ $keep or next;
325 $ng->{newsgroup} =~ $skip and next;
326 my $srch = $ng->search or next;
329 return '.' unless @srch;
332 long_response($self, sub {
334 my $msgs = $srch->query_ts($ts, $prev);
337 join(">\r\n<", map { $_->mid } @$msgs ).
339 $prev = $msgs->[-1]->{num};
342 if (@srch) { # continue onto next newsgroup
345 } else { # break out of the long response.
353 my ($self, $group) = @_;
354 my $no_such = '411 no such news group';
355 my $ng = $self->{nntpd}->{groups}->{$group} or return $no_such;
358 my ($min, $max) = $ng->mm->minmax;
361 $self->{article} = $min;
362 my $est_size = $max - $min;
363 "211 $est_size $min $max $group";
366 sub article_adj ($$) {
367 my ($self, $off) = @_;
368 my $ng = $self->{ng} or return '412 no newsgroup selected';
370 my $n = $self->{article};
371 defined $n or return '420 no current article has been selected';
374 my $mid = $ng->mm->mid_for($n);
376 $n = $off > 0 ? 'next' : 'previous';
377 return "421 no $n article in this group";
379 $self->{article} = $n;
380 "223 $n <$mid> article retrieved - request text separately";
383 sub cmd_next ($) { article_adj($_[0], 1) }
384 sub cmd_last ($) { article_adj($_[0], -1) }
386 # We want to encourage using email and CC-ing everybody involved to avoid
387 # the single-point-of-failure a single server provides.
390 my $ng = $self->{ng};
391 $ng ? "440 mailto:$ng->{-primary_address} to post"
392 : '440 posting not allowed'
397 res($self, '205 closing connection - goodbye!');
402 sub header_append ($$$) {
403 my ($hdr, $k, $v) = @_;
404 my @v = $hdr->header($k);
408 $hdr->header_set($k, @v, $v);
412 my ($self, $ng, $n, $mid) = @_;
413 my $ret = "$ng->{domain} $ng->{newsgroup}:$n";
415 # num_for is pretty cheap and sometimes we'll lookup the existence
416 # of an article without getting even the OVER info. In other words,
417 # I'm not sure if its worth optimizing by scanning To:/Cc: and
418 # PublicInbox::ExtMsg on the PSGI end is just as expensive
419 foreach my $other (@{$self->{nntpd}->{grouplist}}) {
420 next if $ng eq $other;
421 my $num = eval { $other->mm->num_for($mid) } or next;
422 $ret .= " $other->{newsgroup}:$num";
427 sub set_nntp_headers ($$$$$) {
428 my ($self, $hdr, $ng, $n, $mid) = @_;
431 my $xref = xref($self, $ng, $n, $mid);
432 $hdr->header_set('Xref', $xref);
434 $hdr->header_set('Newsgroups', (split(/ /, $xref, 2))[1]);
435 header_append($hdr, 'List-Post', "<mailto:$ng->{-primary_address}>");
436 if (my $url = $ng->base_url) {
437 $mid = mid_escape($mid);
438 header_append($hdr, 'Archived-At', "<$url$mid/>");
439 header_append($hdr, 'List-Archive', "<$url>");
443 sub art_lookup ($$$) {
444 my ($self, $art, $set_headers) = @_;
445 my $ng = $self->{ng};
449 if ($art =~ /\A\d+\z/o) {
450 $err = '423 no such article number in this group';
453 } elsif ($art =~ /\A<([^>]+)>\z/) {
456 $n = $ng->mm->num_for($mid) if $ng;
457 goto found if defined $n;
458 foreach my $g (values %{$self->{nntpd}->{groups}}) {
459 $n = $g->mm->num_for($mid);
470 $err = '420 no current article has been selected';
471 $n = $self->{article};
472 defined $n or return $err;
474 $ng or return '412 no newsgroup has been selected';
475 $mid = $ng->mm->mid_for($n);
476 defined $mid or return $err;
479 my $smsg = $ng->search->{over_ro}->get_art($n) or return $err;
480 my $msg = $ng->msg_by_smsg($smsg) or return $err;
481 my $s = Email::Simple->new($msg);
483 set_nntp_headers($self, $s->header_obj, $ng, $n, $mid);
486 $s->body_set('') if ($set_headers == 2);
488 [ $n, $mid, $s, $smsg->bytes, $smsg->lines, $ng ];
491 sub simple_body_write ($$) {
495 $body =~ s/^\./../smg;
496 $body =~ s/(?<!\r)\n/\r\n/sg;
497 do_more($self, $body);
498 do_more($self, "\r\n") unless $body =~ /\r\n\z/s;
503 my ($self, $art) = @_;
504 $self->{article} = $art if defined $art && $art =~ /\A\d+\z/;
508 my $hdr = $_[0]->header_obj->as_string;
513 sub cmd_article ($;$) {
514 my ($self, $art) = @_;
515 my $r = art_lookup($self, $art, 1);
516 return $r unless ref $r;
517 my ($n, $mid, $s) = @$r;
518 set_art($self, $art);
519 more($self, "220 $n <$mid> article retrieved - head and body follow");
520 do_more($self, _header($s));
521 do_more($self, "\r\n");
522 simple_body_write($self, $s);
526 my ($self, $art) = @_;
527 my $r = art_lookup($self, $art, 2);
528 return $r unless ref $r;
529 my ($n, $mid, $s) = @$r;
530 set_art($self, $art);
531 more($self, "221 $n <$mid> article retrieved - head follows");
532 do_more($self, _header($s));
537 my ($self, $art) = @_;
538 my $r = art_lookup($self, $art, 0);
539 return $r unless ref $r;
540 my ($n, $mid, $s) = @$r;
541 set_art($self, $art);
542 more($self, "222 $n <$mid> article retrieved - body follows");
543 simple_body_write($self, $s);
547 my ($self, $art) = @_;
548 my $r = art_lookup($self, $art, 0);
549 return $r unless ref $r;
550 my ($n, $mid, undef) = @$r;
551 set_art($self, $art);
552 "223 $n <$mid> article retrieved - request text separately";
555 sub cmd_ihave ($) { '435 article not wanted - do not send it' }
557 sub cmd_date ($) { '111 '.strftime('%Y%m%d%H%M%S', gmtime(time)) }
561 more($self, '100 help text follows');
566 my ($self, $range) = @_;
567 my $ng = $self->{ng} or return '412 no news group has been selected';
568 defined $range or return '420 No article(s) selected';
570 my ($min, $max) = $ng->mm->minmax;
571 if ($range =~ /\A(\d+)\z/) {
573 } elsif ($range =~ /\A(\d+)-\z/) {
574 ($beg, $end) = ($1, $max);
575 } elsif ($range =~ /\A(\d+)-(\d+)\z/) {
576 ($beg, $end) = ($1, $2);
580 $beg = $min if ($beg < $min);
581 $end = $max if ($end > $max);
582 return '420 No article(s) selected' if ($beg > $end);
586 sub long_response ($$) {
587 my ($self, $cb) = @_;
588 die "BUG: nested long response" if $self->{long_res};
590 my $fd = $self->{fd};
591 defined $fd or return;
592 # make sure we disable reading during a long response,
593 # clients should not be sending us stuff and making us do more
594 # work while we are stream a response to them
595 $self->watch_read(0);
597 $self->{long_res} = sub {
598 my $more = eval { $cb->() };
599 if ($@ || $self->{closed}) {
600 $self->{long_res} = undef;
604 "%s during long response[$fd] - %0.6f",
607 if ($self->{closed}) {
608 out($self, " deferred[$fd] aborted - %0.6f",
611 update_idle_time($self);
612 $self->watch_read(1);
614 } elsif ($more) { # $self->{write_buf_size}:
615 # no recursion, schedule another call ASAP
616 # but only after all pending writes are done
617 update_idle_time($self);
620 $nextt ||= PublicInbox::EvCleanup::asap(*next_tick);
622 $self->{long_res} = undef;
623 $self->watch_read(1);
625 out($self, " deferred[$fd] done - %0.6f", now() - $t0);
628 $self->{long_res}->(); # kick off!
632 sub hdr_message_id ($$$) { # optimize XHDR Message-ID [range] for slrnpull.
633 my ($self, $xhdr, $range) = @_;
635 if (defined $range && $range =~ /\A<(.+)>\z/) { # Message-ID
636 my ($ng, $n) = mid_lookup($self, $1);
637 return r430 unless $n;
638 hdr_mid_response($self, $xhdr, $ng, $n, $range, $range);
639 } else { # numeric range
640 $range = $self->{article} unless defined $range;
641 my $r = get_range($self, $range);
642 return $r unless ref $r;
643 my $mm = $self->{ng}->mm;
644 my ($beg, $end) = @$r;
645 more($self, $xhdr ? r221 : r225);
646 long_response($self, sub {
647 my $r = $mm->msg_range(\$beg, $end);
649 more($self, join("\r\n", map {
657 sub mid_lookup ($$) {
658 my ($self, $mid) = @_;
659 my $self_ng = $self->{ng};
661 my $n = $self_ng->mm->num_for($mid);
662 return ($self_ng, $n) if defined $n;
664 foreach my $ng (values %{$self->{nntpd}->{groups}}) {
665 next if defined $self_ng && $ng eq $self_ng;
666 my $n = $ng->mm->num_for($mid);
667 return ($ng, $n) if defined $n;
672 sub hdr_xref ($$$) { # optimize XHDR Xref [range] for rtin
673 my ($self, $xhdr, $range) = @_;
675 if (defined $range && $range =~ /\A<(.+)>\z/) { # Message-ID
677 my ($ng, $n) = mid_lookup($self, $mid);
678 return r430 unless $n;
679 hdr_mid_response($self, $xhdr, $ng, $n, $range,
680 xref($self, $ng, $n, $mid));
681 } else { # numeric range
682 $range = $self->{article} unless defined $range;
683 my $r = get_range($self, $range);
684 return $r unless ref $r;
685 my $ng = $self->{ng};
687 my ($beg, $end) = @$r;
688 more($self, $xhdr ? r221 : r225);
689 long_response($self, sub {
690 my $r = $mm->msg_range(\$beg, $end);
692 more($self, join("\r\n", map {
694 "$num ".xref($self, $ng, $num, $_->[1]);
701 sub search_header_for {
702 my ($srch, $num, $field) = @_;
703 my $smsg = $srch->{over_ro}->get_art($num) or return;
704 return PublicInbox::SearchMsg::date($smsg) if $field eq 'date';
708 sub hdr_searchmsg ($$$$) {
709 my ($self, $xhdr, $field, $range) = @_;
710 if (defined $range && $range =~ /\A<(.+)>\z/) { # Message-ID
711 my ($ng, $n) = mid_lookup($self, $1);
712 return r430 unless defined $n;
713 my $v = search_header_for($ng->search, $n, $field);
714 hdr_mid_response($self, $xhdr, $ng, $n, $range, $v);
715 } else { # numeric range
716 $range = $self->{article} unless defined $range;
717 my $srch = $self->{ng}->search;
718 my $mm = $self->{ng}->mm;
719 my $r = get_range($self, $range);
720 return $r unless ref $r;
721 my ($beg, $end) = @$r;
722 more($self, $xhdr ? r221 : r225);
724 long_response($self, sub {
725 my $msgs = $srch->query_xover($cur, $end);
726 my $nr = scalar @$msgs or return;
728 foreach my $s (@$msgs) {
729 $tmp .= $s->{num} . ' ' . $s->$field . "\r\n";
732 do_more($self, $tmp);
733 $cur = $msgs->[-1]->{num} + 1;
739 my ($self, $xhdr, $header, $range) = @_;
740 my $sub = lc $header;
741 if ($sub eq 'message-id') {
742 hdr_message_id($self, $xhdr, $range);
743 } elsif ($sub eq 'xref') {
744 hdr_xref($self, $xhdr, $range);
745 } elsif ($sub =~ /\A(?:subject|references|date|from|to|cc|
747 hdr_searchmsg($self, $xhdr, $sub, $range);
748 } elsif ($sub =~ /\A:(bytes|lines)\z/) {
749 hdr_searchmsg($self, $xhdr, $1, $range);
751 $xhdr ? (r221 . "\r\n.") : "503 HDR not permitted on $header";
757 my ($self, $header, $range) = @_;
758 do_hdr($self, 0, $header, $range);
762 sub cmd_xhdr ($$;$) {
763 my ($self, $header, $range) = @_;
764 do_hdr($self, 1, $header, $range);
767 sub hdr_mid_prefix ($$$$$) {
768 my ($self, $xhdr, $ng, $n, $mid) = @_;
769 return $mid if $xhdr;
771 # HDR for RFC 3977 users
772 if (my $self_ng = $self->{ng}) {
773 ($self_ng eq $ng) ? $n : '0';
779 sub hdr_mid_response ($$$$$$) {
780 my ($self, $xhdr, $ng, $n, $mid, $v) = @_; # r: art_lookup result
783 $res .= r221 . "\r\n";
784 $res .= "$mid $v\r\n";
786 $res .= r225 . "\r\n";
787 my $pfx = hdr_mid_prefix($self, $xhdr, $ng, $n, $mid);
788 $res .= "$pfx $v\r\n";
790 res($self, $res .= '.');
794 sub cmd_xrover ($;$) {
795 my ($self, $range) = @_;
796 my $ng = $self->{ng} or return '412 no newsgroup selected';
797 (defined $range && $range =~ /[<>]/) and
798 return '420 No article(s) selected'; # no message IDs
800 $range = $self->{article} unless defined $range;
801 my $r = get_range($self, $range);
802 return $r unless ref $r;
803 my ($beg, $end) = @$r;
805 my $srch = $ng->search;
806 more($self, '224 Overview information follows');
808 long_response($self, sub {
809 my $h = search_header_for($srch, $beg, 'references');
810 more($self, "$beg $h") if defined($h);
816 my ($num, $smsg) = @_;
817 # n.b. field access and procedural calls can be
818 # 10%-15% faster than OO method calls:
819 my $s = join("\t", $num,
822 PublicInbox::SearchMsg::date($smsg),
832 my ($self, $range) = @_;
833 if ($range && $range =~ /\A<(.+)>\z/) {
834 my ($ng, $n) = mid_lookup($self, $1);
835 defined $n or return r430;
836 my $smsg = $ng->search->{over_ro}->get_art($n) or return r430;
837 more($self, '224 Overview information follows (multi-line)');
839 # Only set article number column if it's the current group
840 my $self_ng = $self->{ng};
841 $n = 0 if (!$self_ng || $self_ng ne $ng);
842 more($self, over_line($n, $smsg));
845 cmd_xover($self, $range);
849 sub cmd_xover ($;$) {
850 my ($self, $range) = @_;
851 $range = $self->{article} unless defined $range;
852 my $r = get_range($self, $range);
853 return $r unless ref $r;
854 my ($beg, $end) = @$r;
855 more($self, "224 Overview information follows for $beg to $end");
856 my $srch = $self->{ng}->search;
858 long_response($self, sub {
859 my $msgs = $srch->query_xover($cur, $end);
860 my $nr = scalar @$msgs or return;
863 more($self, join("\r\n", map {
864 over_line($_->{num}, $_);
866 $cur = $msgs->[-1]->{num} + 1;
871 my ($self, $mid) = @_;
872 return r501 unless $mid =~ /\A<(.+)>\z/;
875 foreach my $ng (values %{$self->{nntpd}->{groups}}) {
876 my $n = $ng->mm->num_for($mid);
877 push @paths, "$ng->{newsgroup}/$n" if defined $n;
879 return '430 no such article on server' unless @paths;
880 '223 '.join(' ', @paths);
884 my ($self, $line) = @_;
885 do_write($self, $line . "\r\n");
889 my ($self, $line) = @_;
890 do_more($self, $line . "\r\n");
894 my ($self, $data) = @_;
895 my $done = $self->write($data);
896 return if $self->{closed};
898 # Do not watch for readability if we have data in the queue,
899 # instead re-enable watching for readability when we can
900 $self->watch_read(0) if (!$done || $self->{long_res});
906 my ($self, $fmt, @args) = @_;
907 printf { $self->{nntpd}->{err} } $fmt."\n", @args;
911 my ($self, $fmt, @args) = @_;
912 printf { $self->{nntpd}->{out} } $fmt."\n", @args;
915 use constant MSG_MORE => ($^O eq 'linux') ? 0x8000 : 0;
918 my ($self, $data) = @_;
919 if (MSG_MORE && !$self->{write_buf_size}) {
920 my $n = send($self->{sock}, $data, MSG_MORE);
922 my $dlen = length($data);
923 return 1 if $n == $dlen; # all done!
924 $data = substr($data, $n, $dlen - $n);
927 do_write($self, $data);
930 # callbacks for Danga::Socket
932 sub event_hup { $_[0]->close }
933 sub event_err { $_[0]->close }
937 update_idle_time($self);
938 # only continue watching for readability when we are done writing:
939 if ($self->write(undef) == 1 && !$self->{long_res}) {
940 $self->watch_read(1);
946 use constant LINE_MAX => 512; # RFC 977 section 2.3
948 if (index($self->{rbuf}, "\n") < 0) {
949 my $buf = $self->read(LINE_MAX) or return $self->close;
950 $self->{rbuf} .= $$buf;
953 while ($r > 0 && $self->{rbuf} =~ s/\A\s*([^\r\n]*)\r?\n//) {
955 return $self->close if $line =~ /[[:cntrl:]]/s;
957 my $fd = $self->{fd};
958 $r = eval { process_line($self, $line) };
959 my $d = $self->{long_res} ?
960 " deferred[$fd]" : '';
961 out($self, "[$fd] %s - %0.6f$d", $line, now() - $t0);
964 return $self->close if $r < 0;
965 my $len = length($self->{rbuf});
966 return $self->close if ($len >= LINE_MAX);
967 update_idle_time($self);
971 my ($self, $bool) = @_;
972 my $rv = $self->SUPER::watch_read($bool);
973 if ($bool && index($self->{rbuf}, "\n") >= 0) {
974 # Force another read if there is a pipelined request.
975 # We don't know if the socket has anything for us to read,
976 # and we must double-check again by the time the timer fires
977 # in case we really did dispatch a read event and started
978 # another long response.
980 $nextt ||= PublicInbox::EvCleanup::asap(*next_tick);
985 sub not_idle_long ($$) {
986 my ($self, $now) = @_;
987 defined(my $fd = $self->{fd}) or return;
988 my $ary = $EXPMAP->{$fd} or return;
989 my $exp_at = $ary->[0] + $EXPTIME;
993 # for graceful shutdown in PublicInbox::Daemon:
995 my ($self, $now) = @_;
996 ($self->{rbuf} ne '' || $self->{long_res} || $self->{write_buf_size} ||
997 not_idle_long($self, $now));