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, $v);
411 my ($self, $ng, $n, $mid) = @_;
412 my $ret = "$ng->{domain} $ng->{newsgroup}:$n";
414 # num_for is pretty cheap and sometimes we'll lookup the existence
415 # of an article without getting even the OVER info. In other words,
416 # I'm not sure if its worth optimizing by scanning To:/Cc: and
417 # PublicInbox::ExtMsg on the PSGI end is just as expensive
418 foreach my $other (@{$self->{nntpd}->{grouplist}}) {
419 next if $ng eq $other;
420 my $num = eval { $other->mm->num_for($mid) } or next;
421 $ret .= " $other->{newsgroup}:$num";
426 sub set_nntp_headers ($$$$$) {
427 my ($self, $hdr, $ng, $n, $mid) = @_;
430 my $xref = xref($self, $ng, $n, $mid);
431 $hdr->header_set('Xref', $xref);
433 $hdr->header_set('Newsgroups', (split(/ /, $xref, 2))[1]);
434 header_append($hdr, 'List-Post', "<mailto:$ng->{-primary_address}>");
435 if (my $url = $ng->base_url) {
436 $mid = mid_escape($mid);
437 header_append($hdr, 'Archived-At', "<$url$mid/>");
438 header_append($hdr, 'List-Archive', "<$url>");
442 sub art_lookup ($$$) {
443 my ($self, $art, $set_headers) = @_;
444 my $ng = $self->{ng};
448 if ($art =~ /\A\d+\z/o) {
449 $err = '423 no such article number in this group';
452 } elsif ($art =~ /\A<([^>]+)>\z/) {
455 $n = $ng->mm->num_for($mid) if $ng;
456 goto found if defined $n;
457 foreach my $g (values %{$self->{nntpd}->{groups}}) {
458 $n = $g->mm->num_for($mid);
469 $err = '420 no current article has been selected';
470 $n = $self->{article};
471 defined $n or return $err;
473 $ng or return '412 no newsgroup has been selected';
474 $mid = $ng->mm->mid_for($n);
475 defined $mid or return $err;
478 my $smsg = $ng->search->{over_ro}->get_art($n) or return $err;
479 my $msg = $ng->msg_by_smsg($smsg) or return $err;
480 my $s = Email::Simple->new($msg);
482 set_nntp_headers($self, $s->header_obj, $ng, $n, $mid);
485 $s->body_set('') if ($set_headers == 2);
487 [ $n, $mid, $s, $smsg->bytes, $smsg->lines, $ng ];
490 sub simple_body_write ($$) {
494 $body =~ s/^\./../smg;
495 $body =~ s/(?<!\r)\n/\r\n/sg;
496 do_more($self, $body);
497 do_more($self, "\r\n") unless $body =~ /\r\n\z/s;
502 my ($self, $art) = @_;
503 $self->{article} = $art if defined $art && $art =~ /\A\d+\z/;
507 my $hdr = $_[0]->header_obj->as_string;
512 sub cmd_article ($;$) {
513 my ($self, $art) = @_;
514 my $r = art_lookup($self, $art, 1);
515 return $r unless ref $r;
516 my ($n, $mid, $s) = @$r;
517 set_art($self, $art);
518 more($self, "220 $n <$mid> article retrieved - head and body follow");
519 do_more($self, _header($s));
520 do_more($self, "\r\n");
521 simple_body_write($self, $s);
525 my ($self, $art) = @_;
526 my $r = art_lookup($self, $art, 2);
527 return $r unless ref $r;
528 my ($n, $mid, $s) = @$r;
529 set_art($self, $art);
530 more($self, "221 $n <$mid> article retrieved - head follows");
531 do_more($self, _header($s));
536 my ($self, $art) = @_;
537 my $r = art_lookup($self, $art, 0);
538 return $r unless ref $r;
539 my ($n, $mid, $s) = @$r;
540 set_art($self, $art);
541 more($self, "222 $n <$mid> article retrieved - body follows");
542 simple_body_write($self, $s);
546 my ($self, $art) = @_;
547 my $r = art_lookup($self, $art, 0);
548 return $r unless ref $r;
549 my ($n, $mid, undef) = @$r;
550 set_art($self, $art);
551 "223 $n <$mid> article retrieved - request text separately";
554 sub cmd_ihave ($) { '435 article not wanted - do not send it' }
556 sub cmd_date ($) { '111 '.strftime('%Y%m%d%H%M%S', gmtime(time)) }
560 more($self, '100 help text follows');
565 my ($self, $range) = @_;
566 my $ng = $self->{ng} or return '412 no news group has been selected';
567 defined $range or return '420 No article(s) selected';
569 my ($min, $max) = $ng->mm->minmax;
570 if ($range =~ /\A(\d+)\z/) {
572 } elsif ($range =~ /\A(\d+)-\z/) {
573 ($beg, $end) = ($1, $max);
574 } elsif ($range =~ /\A(\d+)-(\d+)\z/) {
575 ($beg, $end) = ($1, $2);
579 $beg = $min if ($beg < $min);
580 $end = $max if ($end > $max);
581 return '420 No article(s) selected' if ($beg > $end);
585 sub long_response ($$) {
586 my ($self, $cb) = @_;
587 die "BUG: nested long response" if $self->{long_res};
589 my $fd = $self->{fd};
590 defined $fd or return;
591 # make sure we disable reading during a long response,
592 # clients should not be sending us stuff and making us do more
593 # work while we are stream a response to them
594 $self->watch_read(0);
596 $self->{long_res} = sub {
597 my $more = eval { $cb->() };
598 if ($@ || $self->{closed}) {
599 $self->{long_res} = undef;
603 "%s during long response[$fd] - %0.6f",
606 if ($self->{closed}) {
607 out($self, " deferred[$fd] aborted - %0.6f",
610 update_idle_time($self);
611 $self->watch_read(1);
613 } elsif ($more) { # $self->{write_buf_size}:
614 # no recursion, schedule another call ASAP
615 # but only after all pending writes are done
616 update_idle_time($self);
619 $nextt ||= PublicInbox::EvCleanup::asap(*next_tick);
621 $self->{long_res} = undef;
622 $self->watch_read(1);
624 out($self, " deferred[$fd] done - %0.6f", now() - $t0);
627 $self->{long_res}->(); # kick off!
631 sub hdr_message_id ($$$) { # optimize XHDR Message-ID [range] for slrnpull.
632 my ($self, $xhdr, $range) = @_;
634 if (defined $range && $range =~ /\A<(.+)>\z/) { # Message-ID
635 my ($ng, $n) = mid_lookup($self, $1);
636 return r430 unless $n;
637 hdr_mid_response($self, $xhdr, $ng, $n, $range, $range);
638 } else { # numeric range
639 $range = $self->{article} unless defined $range;
640 my $r = get_range($self, $range);
641 return $r unless ref $r;
642 my $mm = $self->{ng}->mm;
643 my ($beg, $end) = @$r;
644 more($self, $xhdr ? r221 : r225);
645 long_response($self, sub {
646 my $r = $mm->msg_range(\$beg, $end);
648 more($self, join("\r\n", map {
656 sub mid_lookup ($$) {
657 my ($self, $mid) = @_;
658 my $self_ng = $self->{ng};
660 my $n = $self_ng->mm->num_for($mid);
661 return ($self_ng, $n) if defined $n;
663 foreach my $ng (values %{$self->{nntpd}->{groups}}) {
664 next if defined $self_ng && $ng eq $self_ng;
665 my $n = $ng->mm->num_for($mid);
666 return ($ng, $n) if defined $n;
671 sub hdr_xref ($$$) { # optimize XHDR Xref [range] for rtin
672 my ($self, $xhdr, $range) = @_;
674 if (defined $range && $range =~ /\A<(.+)>\z/) { # Message-ID
676 my ($ng, $n) = mid_lookup($self, $mid);
677 return r430 unless $n;
678 hdr_mid_response($self, $xhdr, $ng, $n, $range,
679 xref($self, $ng, $n, $mid));
680 } else { # numeric range
681 $range = $self->{article} unless defined $range;
682 my $r = get_range($self, $range);
683 return $r unless ref $r;
684 my $ng = $self->{ng};
686 my ($beg, $end) = @$r;
687 more($self, $xhdr ? r221 : r225);
688 long_response($self, sub {
689 my $r = $mm->msg_range(\$beg, $end);
691 more($self, join("\r\n", map {
693 "$num ".xref($self, $ng, $num, $_->[1]);
700 sub search_header_for {
701 my ($srch, $num, $field) = @_;
702 my $smsg = $srch->{over_ro}->get_art($num) or return;
703 return PublicInbox::SearchMsg::date($smsg) if $field eq 'date';
707 sub hdr_searchmsg ($$$$) {
708 my ($self, $xhdr, $field, $range) = @_;
709 if (defined $range && $range =~ /\A<(.+)>\z/) { # Message-ID
710 my ($ng, $n) = mid_lookup($self, $1);
711 return r430 unless defined $n;
712 my $v = search_header_for($ng->search, $n, $field);
713 hdr_mid_response($self, $xhdr, $ng, $n, $range, $v);
714 } else { # numeric range
715 $range = $self->{article} unless defined $range;
716 my $srch = $self->{ng}->search;
717 my $mm = $self->{ng}->mm;
718 my $r = get_range($self, $range);
719 return $r unless ref $r;
720 my ($beg, $end) = @$r;
721 more($self, $xhdr ? r221 : r225);
723 long_response($self, sub {
724 my $msgs = $srch->query_xover($cur, $end);
725 my $nr = scalar @$msgs or return;
727 foreach my $s (@$msgs) {
728 $tmp .= $s->{num} . ' ' . $s->$field . "\r\n";
731 do_more($self, $tmp);
732 $cur = $msgs->[-1]->{num} + 1;
738 my ($self, $xhdr, $header, $range) = @_;
739 my $sub = lc $header;
740 if ($sub eq 'message-id') {
741 hdr_message_id($self, $xhdr, $range);
742 } elsif ($sub eq 'xref') {
743 hdr_xref($self, $xhdr, $range);
744 } elsif ($sub =~ /\A(?:subject|references|date|from|to|cc|
746 hdr_searchmsg($self, $xhdr, $sub, $range);
747 } elsif ($sub =~ /\A:(bytes|lines)\z/) {
748 hdr_searchmsg($self, $xhdr, $1, $range);
750 $xhdr ? (r221 . "\r\n.") : "503 HDR not permitted on $header";
756 my ($self, $header, $range) = @_;
757 do_hdr($self, 0, $header, $range);
761 sub cmd_xhdr ($$;$) {
762 my ($self, $header, $range) = @_;
763 do_hdr($self, 1, $header, $range);
766 sub hdr_mid_prefix ($$$$$) {
767 my ($self, $xhdr, $ng, $n, $mid) = @_;
768 return $mid if $xhdr;
770 # HDR for RFC 3977 users
771 if (my $self_ng = $self->{ng}) {
772 ($self_ng eq $ng) ? $n : '0';
778 sub hdr_mid_response ($$$$$$) {
779 my ($self, $xhdr, $ng, $n, $mid, $v) = @_; # r: art_lookup result
782 $res .= r221 . "\r\n";
783 $res .= "$mid $v\r\n";
785 $res .= r225 . "\r\n";
786 my $pfx = hdr_mid_prefix($self, $xhdr, $ng, $n, $mid);
787 $res .= "$pfx $v\r\n";
789 res($self, $res .= '.');
793 sub cmd_xrover ($;$) {
794 my ($self, $range) = @_;
795 my $ng = $self->{ng} or return '412 no newsgroup selected';
796 (defined $range && $range =~ /[<>]/) and
797 return '420 No article(s) selected'; # no message IDs
799 $range = $self->{article} unless defined $range;
800 my $r = get_range($self, $range);
801 return $r unless ref $r;
802 my ($beg, $end) = @$r;
804 my $srch = $ng->search;
805 more($self, '224 Overview information follows');
807 long_response($self, sub {
808 my $h = search_header_for($srch, $beg, 'references');
809 more($self, "$beg $h") if defined($h);
815 my ($num, $smsg) = @_;
816 # n.b. field access and procedural calls can be
817 # 10%-15% faster than OO method calls:
818 my $s = join("\t", $num,
821 PublicInbox::SearchMsg::date($smsg),
831 my ($self, $range) = @_;
832 if ($range && $range =~ /\A<(.+)>\z/) {
833 my ($ng, $n) = mid_lookup($self, $1);
834 defined $n or return r430;
835 my $smsg = $ng->search->{over_ro}->get_art($n) or return r430;
836 more($self, '224 Overview information follows (multi-line)');
838 # Only set article number column if it's the current group
839 my $self_ng = $self->{ng};
840 $n = 0 if (!$self_ng || $self_ng ne $ng);
841 more($self, over_line($n, $smsg));
844 cmd_xover($self, $range);
848 sub cmd_xover ($;$) {
849 my ($self, $range) = @_;
850 $range = $self->{article} unless defined $range;
851 my $r = get_range($self, $range);
852 return $r unless ref $r;
853 my ($beg, $end) = @$r;
854 more($self, "224 Overview information follows for $beg to $end");
855 my $srch = $self->{ng}->search;
857 long_response($self, sub {
858 my $msgs = $srch->query_xover($cur, $end);
859 my $nr = scalar @$msgs or return;
862 more($self, join("\r\n", map {
863 over_line($_->{num}, $_);
865 $cur = $msgs->[-1]->{num} + 1;
870 my ($self, $mid) = @_;
871 return r501 unless $mid =~ /\A<(.+)>\z/;
874 foreach my $ng (values %{$self->{nntpd}->{groups}}) {
875 my $n = $ng->mm->num_for($mid);
876 push @paths, "$ng->{newsgroup}/$n" if defined $n;
878 return '430 no such article on server' unless @paths;
879 '223 '.join(' ', @paths);
883 my ($self, $line) = @_;
884 do_write($self, $line . "\r\n");
888 my ($self, $line) = @_;
889 do_more($self, $line . "\r\n");
893 my ($self, $data) = @_;
894 my $done = $self->write($data);
895 return if $self->{closed};
897 # Do not watch for readability if we have data in the queue,
898 # instead re-enable watching for readability when we can
899 $self->watch_read(0) if (!$done || $self->{long_res});
905 my ($self, $fmt, @args) = @_;
906 printf { $self->{nntpd}->{err} } $fmt."\n", @args;
910 my ($self, $fmt, @args) = @_;
911 printf { $self->{nntpd}->{out} } $fmt."\n", @args;
914 use constant MSG_MORE => ($^O eq 'linux') ? 0x8000 : 0;
917 my ($self, $data) = @_;
918 if (MSG_MORE && !$self->{write_buf_size}) {
919 my $n = send($self->{sock}, $data, MSG_MORE);
921 my $dlen = length($data);
922 return 1 if $n == $dlen; # all done!
923 $data = substr($data, $n, $dlen - $n);
926 do_write($self, $data);
929 # callbacks for Danga::Socket
931 sub event_hup { $_[0]->close }
932 sub event_err { $_[0]->close }
936 update_idle_time($self);
937 # only continue watching for readability when we are done writing:
938 if ($self->write(undef) == 1 && !$self->{long_res}) {
939 $self->watch_read(1);
945 use constant LINE_MAX => 512; # RFC 977 section 2.3
948 my $buf = $self->read(LINE_MAX) or return $self->close;
949 $self->{rbuf} .= $$buf;
950 while ($r > 0 && $self->{rbuf} =~ s/\A\s*([^\r\n]+)\r?\n//) {
952 return $self->close if $line =~ /[[:cntrl:]]/s;
954 my $fd = $self->{fd};
955 $r = eval { process_line($self, $line) };
956 my $d = $self->{long_res} ?
957 " deferred[$fd]" : '';
958 out($self, "[$fd] %s - %0.6f$d", $line, now() - $t0);
961 return $self->close if $r < 0;
962 my $len = length($self->{rbuf});
963 return $self->close if ($len >= LINE_MAX);
964 update_idle_time($self);
968 my ($self, $bool) = @_;
969 my $rv = $self->SUPER::watch_read($bool);
970 if ($bool && $self->{rbuf} ne '') {
971 # Force another read if there is a pipelined request.
972 # We don't know if the socket has anything for us to read,
973 # and we must double-check again by the time the timer fires
974 # in case we really did dispatch a read event and started
975 # another long response.
977 $nextt ||= PublicInbox::EvCleanup::asap(*next_tick);
982 sub not_idle_long ($$) {
983 my ($self, $now) = @_;
984 defined(my $fd = $self->{fd}) or return;
985 my $ary = $EXPMAP->{$fd} or return;
986 my $exp_at = $ary->[0] + $EXPTIME;
990 # for graceful shutdown in PublicInbox::Daemon:
992 my ($self, $now) = @_;
993 ($self->{rbuf} ne '' || $self->{long_res} || $self->{write_buf_size} ||
994 not_idle_long($self, $now));