1 # Copyright (C) 2015 all contributors <meta@public-inbox.org>
2 # License: AGPLv3 or later (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;
13 require PublicInbox::EvCleanup;
15 use POSIX qw(strftime);
16 use Time::HiRes qw(clock_gettime CLOCK_MONOTONIC);
17 use URI::Escape qw(uri_escape_utf8);
19 r501 => '501 command syntax error',
20 r221 => '221 Header follows',
21 r224 => '224 Overview information follows (multi-line)',
22 r225 => '225 Headers follow (multi-line)',
23 r430 => '430 No article with that message-id',
24 long_response_limit => 0xffffffff,
27 sub now () { clock_gettime(CLOCK_MONOTONIC) };
29 my @OVERVIEW = qw(Subject From Date Message-ID References);
30 my $OVERVIEW_FMT = join(":\r\n", @OVERVIEW, qw(Bytes Lines)) . ":\r\n";
31 my $LIST_HEADERS = join("\r\n", @OVERVIEW,
32 qw(:bytes :lines Xref To Cc)) . "\r\n";
34 # disable commands with easy DoS potential:
35 # LISTGROUP could get pretty bad, too...
36 my %DISABLED; # = map { $_ => 1 } qw(xover list_overview_fmt newnews xhdr);
38 my $EXPMAP; # fd -> [ idle_time, $self ]
40 our $EXPTIME = 180; # 3 minutes
48 foreach my $nntp (@$q) {
49 # for request && response protocols, always finish writing
50 # before finishing reading:
51 if (my $long_cb = $nntp->{long_res}) {
52 $nntp->write($long_cb);
53 } elsif (&Danga::Socket::POLLIN & $nntp->{event_watch}) {
59 sub update_idle_time ($) {
62 defined $fd and $EXPMAP->{$fd} = [ now(), $self ];
68 my $old = $now - $exp;
71 while (my ($fd, $v) = each %$EXPMAP) {
72 my ($idle_time, $nntp) = @$v;
73 if ($idle_time < $old) {
74 $nntp->close; # idempotent
82 $expt = PublicInbox::EvCleanup::later(*expire_old);
85 # noop to kick outselves out of the loop ASAP so descriptors
87 PublicInbox::EvCleanup::asap(sub {});
92 my ($class, $sock, $nntpd) = @_;
93 my $self = fields::new($class);
94 $self->SUPER::new($sock);
95 $self->{nntpd} = $nntpd;
96 res($self, '201 server ready - post via email');
99 update_idle_time($self);
100 $expt ||= PublicInbox::EvCleanup::later(*expire_old);
105 my ($cb, $argc) = @_;
106 my $tot = prototype $cb;
107 my ($nreq, undef) = split(';', $tot);
108 $nreq = ($nreq =~ tr/$//) - 1;
109 $tot = ($tot =~ tr/$//) - 1;
110 ($argc <= $tot && $argc >= $nreq);
113 # returns 1 if we can continue, 0 if not due to buffered writes or disconnect
114 sub process_line ($$) {
116 my ($req, @args) = split(/\s+/, $l);
120 $req = $DISABLED{$req} ? undef : *{'cmd_'.$req}{CODE};
122 return res($self, '500 command not recognized') unless $req;
123 return res($self, r501) unless args_ok($req, scalar @args);
125 my $res = eval { $req->($self, @args) };
127 if ($err && !$self->{closed}) {
129 err($self, 'error from: %s (%s)', $l, $err);
130 $res = '503 program fault - command not performed';
132 return 0 unless defined $res;
137 my ($self, $arg) = @_;
139 return r501 unless $arg eq 'READER';
140 '201 Posting prohibited';
143 sub cmd_slave ($) { '202 slave status noted' }
145 sub cmd_xgtitle ($;$) {
146 my ($self, $wildmat) = @_;
147 more($self, '282 list of groups and descriptions follows');
148 list_newsgroups($self, $wildmat);
152 sub list_overview_fmt ($) {
154 do_more($self, $OVERVIEW_FMT);
157 sub list_headers ($;$) {
159 do_more($self, $LIST_HEADERS);
162 sub list_active ($;$) {
163 my ($self, $wildmat) = @_;
164 wildmat2re($wildmat);
165 foreach my $ng (@{$self->{nntpd}->{grouplist}}) {
166 $ng->{newsgroup} =~ $wildmat or next;
167 group_line($self, $ng);
171 sub list_active_times ($;$) {
172 my ($self, $wildmat) = @_;
173 wildmat2re($wildmat);
174 foreach my $ng (@{$self->{nntpd}->{grouplist}}) {
175 $ng->{newsgroup} =~ $wildmat or next;
176 my $c = eval { $ng->mm->created_at } || time;
177 more($self, "$ng->{newsgroup} $c $ng->{-primary_address}");
181 sub list_newsgroups ($;$) {
182 my ($self, $wildmat) = @_;
183 wildmat2re($wildmat);
184 foreach my $ng (@{$self->{nntpd}->{grouplist}}) {
185 $ng->{newsgroup} =~ $wildmat or next;
186 my $d = $ng->description;
187 more($self, "$ng->{newsgroup} $d");
191 # LIST SUBSCRIPTIONS, DISTRIB.PATS are not supported
192 sub cmd_list ($;$$) {
193 my ($self, @args) = @_;
195 my $arg = shift @args;
196 $arg =~ tr/A-Z./a-z_/;
198 return r501 if $DISABLED{$arg};
204 return r501 unless $arg && args_ok($arg, scalar @args);
205 more($self, '215 information follows');
206 $arg->($self, @args);
208 more($self, '215 list of newsgroups follows');
209 foreach my $ng (@{$self->{nntpd}->{grouplist}}) {
210 group_line($self, $ng);
216 sub cmd_listgroup ($;$) {
217 my ($self, $group) = @_;
218 if (defined $group) {
219 my $res = cmd_group($self, $group);
220 return $res if ($res !~ /\A211 /);
224 $self->{ng} or return '412 no newsgroup selected';
225 long_response($self, 0, long_response_limit, sub {
227 my $nr = $self->{ng}->mm->id_batch($$i, sub {
229 more($self, join("\r\n", @$ary));
232 # -1 to adjust for implicit increment in long_response
233 $$i = $nr ? $$i + $nr - 1 : long_response_limit;
237 sub parse_time ($$;$) {
238 my ($date, $time, $gmt) = @_;
239 use Time::Local qw();
240 my ($hh, $mm, $ss) = unpack('A2A2A2', $time);
242 $gmt =~ /\A(?:UTC|GMT)\z/i or die "GM invalid: $gmt";
245 my @now = $gmt ? gmtime : localtime;
246 my ($YYYY, $MM, $DD);
247 if (length($date) == 8) { # RFC 3977 allows YYYYMMDD
248 ($YYYY, $MM, $DD) = unpack('A4A2A2', $date);
249 } else { # legacy clients send YYMMDD
250 ($YYYY, $MM, $DD) = unpack('A2A2A2', $date);
251 if ($YYYY > strftime('%y', @now)) {
252 my $cur_year = $now[5] + 1900;
253 $YYYY += int($cur_year / 1000) * 1000 - 100;
257 Time::Local::timegm($ss, $mm, $hh, $DD, $MM - 1, $YYYY);
259 Time::Local::timelocal($ss, $mm, $hh, $DD, $MM - 1, $YYYY);
263 sub group_line ($$) {
264 my ($self, $ng) = @_;
265 my ($min, $max) = $ng->mm->minmax;
266 more($self, "$ng->{newsgroup} $max $min n") if defined $min && defined $max;
269 sub cmd_newgroups ($$$;$$) {
270 my ($self, $date, $time, $gmt, $dists) = @_;
271 my $ts = eval { parse_time($date, $time, $gmt) };
275 more($self, '231 list of new newsgroups follows');
276 foreach my $ng (@{$self->{nntpd}->{grouplist}}) {
277 my $c = eval { $ng->mm->created_at } || 0;
278 next unless $c > $ts;
279 group_line($self, $ng);
284 sub wildmat2re (;$) {
285 return $_[0] = qr/.*/ if (!defined $_[0] || $_[0] eq '*');
288 use Digest::SHA qw(sha1_hex);
291 $tmp =~ s#(?<!\\)\[(.+)(?<!\\)\]#
293 my $key = sha1_hex($orig . $salt);
294 $orig =~ s/([^\w\-])+/\Q$1/g;
298 my %map = ('*' => '.*', '?' => '.' );
299 $tmp =~ s#(?<!\\)([^\w\\])#$map{$1} || "\Q$1"#ge;
301 $tmp =~ s#([a-f0-9]{40})#
302 my $orig = $keep{$1};
303 defined $orig ? $orig : $1;
306 $_[0] = qr/\A$tmp\z/;
310 return $_[0] = qr/\A\z/ unless defined $_[0];
311 my %map = ('*' => '.*', ',' => '|');
312 $_[0] =~ s!(.)!$map{$1} || "\Q$1"!ge;
313 $_[0] = qr/\A(?:$_[0])\z/;
316 sub cmd_newnews ($$$$;$$) {
317 my ($self, $newsgroups, $date, $time, $gmt, $dists) = @_;
318 my $ts = eval { parse_time($date, $time, $gmt) };
320 more($self, '230 list of new articles by message-id follows');
321 my ($keep, $skip) = split('!', $newsgroups, 2);
325 foreach my $ng (@{$self->{nntpd}->{grouplist}}) {
326 $ng->{newsgroup} =~ $keep or next;
327 $ng->{newsgroup} =~ $skip and next;
328 my $srch = $ng->search or next;
331 return '.' unless @srch;
334 my $opts = { asc => 1, limit => 1000, offset => 0 };
335 long_response($self, 0, long_response_limit, sub {
338 my $res = $srch->query($ts, $opts);
339 my $msgs = $res->{msgs};
340 if (my $nr = scalar @$msgs) {
342 join(">\r\n<", map { $_->mid } @$msgs ).
344 $opts->{offset} += $nr;
347 if (@srch) { # continue onto next newsgroup
349 } else { # break out of the long response.
350 $$i = long_response_limit;
357 my ($self, $group) = @_;
358 my $no_such = '411 no such news group';
359 my $ng = $self->{nntpd}->{groups}->{$group} or return $no_such;
362 my ($min, $max) = $ng->mm->minmax;
365 $self->{article} = $min;
366 my $est_size = $max - $min;
367 "211 $est_size $min $max $group";
370 sub article_adj ($$) {
371 my ($self, $off) = @_;
372 my $ng = $self->{ng} or return '412 no newsgroup selected';
374 my $n = $self->{article};
375 defined $n or return '420 no current article has been selected';
378 my $mid = $ng->mm->mid_for($n);
380 $n = $off > 0 ? 'next' : 'previous';
381 return "421 no $n article in this group";
383 $self->{article} = $n;
384 "223 $n <$mid> article retrieved - request text separately";
387 sub cmd_next ($) { article_adj($_[0], 1) }
388 sub cmd_last ($) { article_adj($_[0], -1) }
390 # We want to encourage using email and CC-ing everybody involved to avoid
391 # the single-point-of-failure a single server provides.
394 my $ng = $self->{ng};
395 $ng ? "440 mailto:$ng->{-primary_address} to post"
396 : '440 posting not allowed'
401 res($self, '205 closing connection - goodbye!');
406 sub header_append ($$$) {
407 my ($hdr, $k, $v) = @_;
408 my @v = $hdr->header($k);
412 $hdr->header_set($k, @v, $v);
415 sub set_nntp_headers {
416 my ($hdr, $ng, $n, $mid) = @_;
419 $hdr->header_set('Newsgroups', $ng->{newsgroup});
420 $hdr->header_set('Xref', xref($ng, $n));
421 header_append($hdr, 'List-Post', "<mailto:$ng->{-primary_address}>");
422 if (my $url = $ng->base_url) {
423 $mid = uri_escape_utf8($mid);
424 header_append($hdr, 'Archived-At', "<$url$mid/>");
425 header_append($hdr, 'List-Archive', "<$url>");
429 sub art_lookup ($$$) {
430 my ($self, $art, $set_headers) = @_;
431 my $ng = $self->{ng};
435 if ($art =~ /\A\d+\z/o) {
436 $err = '423 no such article number in this group';
439 } elsif ($art =~ /\A<([^>]+)>\z/) {
442 $n = $ng->mm->num_for($mid) if $ng;
443 goto found if defined $n;
444 foreach my $g (values %{$self->{nntpd}->{groups}}) {
445 $n = $g->mm->num_for($mid);
456 $err = '420 no current article has been selected';
457 $n = $self->{article};
458 defined $n or return $err;
460 $ng or return '412 no newsgroup has been selected';
461 $mid = $ng->mm->mid_for($n);
462 defined $mid or return $err;
466 my $s = eval { $ng->msg_by_mid($mid, \$bytes) } or return $err;
467 $s = Email::Simple->new($s);
470 set_nntp_headers($s->header_obj, $ng, $n, $mid);
471 $lines = $s->body =~ tr!\n!\n!;
474 $s->body_set('') if ($set_headers == 2);
476 [ $n, $mid, $s, $bytes, $lines, $ng ];
479 sub simple_body_write ($$) {
483 $body =~ s/^\./../smg;
484 $body =~ s/(?<!\r)\n/\r\n/sg;
485 do_more($self, $body);
486 do_more($self, "\r\n") unless $body =~ /\r\n\z/s;
491 my ($self, $art) = @_;
492 $self->{article} = $art if defined $art && $art =~ /\A\d+\z/;
496 my $hdr = $_[0]->header_obj->as_string;
501 sub cmd_article ($;$) {
502 my ($self, $art) = @_;
503 my $r = art_lookup($self, $art, 1);
504 return $r unless ref $r;
505 my ($n, $mid, $s) = @$r;
506 set_art($self, $art);
507 more($self, "220 $n <$mid> article retrieved - head and body follow");
508 do_more($self, _header($s));
509 do_more($self, "\r\n");
510 simple_body_write($self, $s);
514 my ($self, $art) = @_;
515 my $r = art_lookup($self, $art, 2);
516 return $r unless ref $r;
517 my ($n, $mid, $s) = @$r;
518 set_art($self, $art);
519 more($self, "221 $n <$mid> article retrieved - head follows");
520 do_more($self, _header($s));
525 my ($self, $art) = @_;
526 my $r = art_lookup($self, $art, 0);
527 return $r unless ref $r;
528 my ($n, $mid, $s) = @$r;
529 set_art($self, $art);
530 more($self, "222 $n <$mid> article retrieved - body follows");
531 simple_body_write($self, $s);
535 my ($self, $art) = @_;
536 my $r = art_lookup($self, $art, 0);
537 return $r unless ref $r;
538 my ($n, $mid, undef) = @$r;
539 set_art($self, $art);
540 "223 $n <$mid> article retrieved - request text separately";
543 sub cmd_ihave ($) { '435 article not wanted - do not send it' }
545 sub cmd_date ($) { '111 '.strftime('%Y%m%d%H%M%S', gmtime(time)) }
549 more($self, '100 help text follows');
554 my ($self, $range) = @_;
555 my $ng = $self->{ng} or return '412 no news group has been selected';
556 defined $range or return '420 No article(s) selected';
558 my ($min, $max) = $ng->mm->minmax;
559 if ($range =~ /\A(\d+)\z/) {
561 } elsif ($range =~ /\A(\d+)-\z/) {
562 ($beg, $end) = ($1, $max);
563 } elsif ($range =~ /\A(\d+)-(\d+)\z/) {
564 ($beg, $end) = ($1, $2);
568 $beg = $min if ($beg < $min);
569 $end = $max if ($end > $max);
570 return '420 No article(s) selected' if ($beg > $end);
574 sub long_response ($$$$) {
575 my ($self, $beg, $end, $cb) = @_;
576 die "BUG: nested long response" if $self->{long_res};
578 my $fd = $self->{fd};
579 defined $fd or return;
580 # make sure we disable reading during a long response,
581 # clients should not be sending us stuff and making us do more
582 # work while we are stream a response to them
583 $self->watch_read(0);
585 $self->{long_res} = sub {
586 # limit our own running time for fairness with other
587 # clients and to avoid buffering too much:
592 eval { $cb->(\$beg) };
593 } until (($err = $@) || $self->{closed} ||
594 ++$beg > $end || !--$lim || $self->{write_buf_size});
596 if ($err || $self->{closed}) {
597 $self->{long_res} = undef;
601 "%s during long response[$fd] - %0.6f",
604 if ($self->{closed}) {
605 out($self, " deferred[$fd] aborted - %0.6f",
608 update_idle_time($self);
609 $self->watch_read(1);
611 } elsif (!$lim || $self->{write_buf_size}) {
612 # no recursion, schedule another call ASAP
613 # but only after all pending writes are done
614 update_idle_time($self);
617 $nextt ||= PublicInbox::EvCleanup::asap(*next_tick);
619 $self->{long_res} = undef;
620 $self->watch_read(1);
622 out($self, " deferred[$fd] done - %0.6f", now() - $t0);
625 $self->{long_res}->(); # kick off!
629 sub hdr_message_id ($$$) { # optimize XHDR Message-ID [range] for slrnpull.
630 my ($self, $xhdr, $range) = @_;
632 if (defined $range && $range =~ /\A<(.+)>\z/) { # Message-ID
633 my ($ng, $n) = mid_lookup($self, $1);
634 return r430 unless $n;
635 hdr_mid_response($self, $xhdr, $ng, $n, $range, $range);
636 } else { # numeric range
637 $range = $self->{article} unless defined $range;
638 my $r = get_range($self, $range);
639 return $r unless ref $r;
640 my $mm = $self->{ng}->mm;
641 my ($beg, $end) = @$r;
642 more($self, $xhdr ? r221 : r225);
643 long_response($self, $beg, $end, sub {
645 my $mid = $mm->mid_for($$i);
646 more($self, "$$i <$mid>") if defined $mid;
653 "$ng->{domain} $ng->{newsgroup}:$n"
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 && $range =~ /\A<(.+)>\z/) { # Message-ID
675 my ($ng, $n) = mid_lookup($self, $1);
676 return r430 unless $n;
677 hdr_mid_response($self, $xhdr, $ng, $n, $range, xref($ng, $n));
678 } else { # numeric range
679 $range = $self->{article} unless defined $range;
680 my $r = get_range($self, $range);
681 return $r unless ref $r;
682 my $ng = $self->{ng};
684 my ($beg, $end) = @$r;
685 more($self, $xhdr ? r221 : r225);
686 long_response($self, $beg, $end, sub {
688 my $mid = $mm->mid_for($$i);
689 more($self, "$$i ".xref($ng, $$i)) if defined $mid;
694 sub search_header_for {
695 my ($srch, $mid, $field) = @_;
696 my $smsg = $srch->lookup_mail($mid) or return;
700 sub hdr_searchmsg ($$$$) {
701 my ($self, $xhdr, $field, $range) = @_;
702 if (defined $range && $range =~ /\A<(.+)>\z/) { # Message-ID
703 my ($ng, $n) = mid_lookup($self, $1);
704 return r430 unless $n;
705 my $v = search_header_for($ng->search, $range, $field);
706 hdr_mid_response($self, $xhdr, $ng, $n, $range, $v);
707 } else { # numeric range
708 $range = $self->{article} unless defined $range;
709 my $srch = $self->{ng}->search;
710 my $mm = $self->{ng}->mm;
711 my $r = get_range($self, $range);
712 return $r unless ref $r;
713 my ($beg, $end) = @$r;
714 more($self, $xhdr ? r221 : r225);
716 long_response($self, $beg, $end, sub {
718 my $res = $srch->query_xover($beg, $end, $off);
719 my $msgs = $res->{msgs};
720 my $nr = scalar @$msgs or return;
723 foreach my $s (@$msgs) {
724 $tmp .= $s->num . ' ' . $s->$field . "\r\n";
727 do_more($self, $tmp);
728 # -1 to adjust for implicit increment in long_response
729 $$i = $nr ? $$i + $nr - 1 : long_response_limit;
735 my ($self, $xhdr, $header, $range) = @_;
736 my $sub = lc $header;
737 if ($sub eq 'message-id') {
738 hdr_message_id($self, $xhdr, $range);
739 } elsif ($sub eq 'xref') {
740 hdr_xref($self, $xhdr, $range);
741 } elsif ($sub =~ /\A(?:subject|references|date|from|to|cc|
743 hdr_searchmsg($self, $xhdr, $sub, $range);
744 } elsif ($sub =~ /\A:(bytes|lines)\z/) {
745 hdr_searchmsg($self, $xhdr, $1, $range);
747 $xhdr ? (r221 . "\r\n.") : "503 HDR not permitted on $header";
753 my ($self, $header, $range) = @_;
754 do_hdr($self, 0, $header, $range);
758 sub cmd_xhdr ($$;$) {
759 my ($self, $header, $range) = @_;
760 do_hdr($self, 1, $header, $range);
763 sub hdr_mid_prefix ($$$$$) {
764 my ($self, $xhdr, $ng, $n, $mid) = @_;
765 return $mid if $xhdr;
767 # HDR for RFC 3977 users
768 if (my $self_ng = $self->{ng}) {
769 ($self_ng eq $ng) ? $n : '0';
775 sub hdr_mid_response ($$$$$$) {
776 my ($self, $xhdr, $ng, $n, $mid, $v) = @_; # r: art_lookup result
779 $res .= r221 . "\r\n";
780 $res .= "$mid $v\r\n";
782 $res .= r225 . "\r\n";
783 my $pfx = hdr_mid_prefix($self, $xhdr, $ng, $n, $mid);
784 $res .= "$pfx $v\r\n";
786 res($self, $res .= '.');
790 sub cmd_xrover ($;$) {
791 my ($self, $range) = @_;
792 my $ng = $self->{ng} or return '412 no newsgroup selected';
793 (defined $range && $range =~ /[<>]/) and
794 return '420 No article(s) selected'; # no message IDs
796 $range = $self->{article} unless defined $range;
797 my $r = get_range($self, $range);
798 return $r unless ref $r;
799 my ($beg, $end) = @$r;
801 my $srch = $ng->search;
802 more($self, '224 Overview information follows');
803 long_response($self, $beg, $end, sub {
805 my $mid = $mm->mid_for($$i) or return;
806 my $h = search_header_for($srch, $mid, 'references');
807 more($self, "$$i $h");
812 my ($num, $smsg) = @_;
813 # n.b. field access and procedural calls can be
814 # 10%-15% faster than OO method calls:
815 my $s = join("\t", $num,
818 PublicInbox::SearchMsg::date($smsg),
819 '<'.PublicInbox::SearchMsg::mid($smsg).'>',
821 PublicInbox::SearchMsg::bytes($smsg),
822 PublicInbox::SearchMsg::lines($smsg));
828 my ($self, $range) = @_;
829 if ($range && $range =~ /\A<(.+)>\z/) {
830 my ($ng, $n) = mid_lookup($self, $1);
831 my $smsg = $ng->search->lookup_mail($range) or
832 return '430 No article with that message-id';
833 more($self, '224 Overview information follows (multi-line)');
835 # Only set article number column if it's the current group
836 my $self_ng = $self->{ng};
837 $n = 0 if (!$self_ng || $self_ng ne $ng);
838 more($self, over_line($n, $smsg));
841 cmd_xover($self, $range);
845 sub cmd_xover ($;$) {
846 my ($self, $range) = @_;
847 $range = $self->{article} unless defined $range;
848 my $r = get_range($self, $range);
849 return $r unless ref $r;
850 my ($beg, $end) = @$r;
851 more($self, "224 Overview information follows for $beg to $end");
852 my $srch = $self->{ng}->search;
854 long_response($self, $beg, $end, sub {
856 my $res = $srch->query_xover($beg, $end, $off);
857 my $msgs = $res->{msgs};
858 my $nr = scalar @$msgs or return;
862 more($self, join("\r\n", map {
863 over_line(PublicInbox::SearchMsg::num($_), $_);
866 # -1 to adjust for implicit increment in long_response
867 $$i = $nr ? $$i + $nr - 1 : long_response_limit;
872 my ($self, $mid) = @_;
873 return r501 unless $mid =~ /\A<(.+)>\z/;
876 foreach my $ng (values %{$self->{nntpd}->{groups}}) {
877 my $n = $ng->mm->num_for($mid);
878 push @paths, "$ng->{newsgroup}/$n" if defined $n;
880 return '430 no such article on server' unless @paths;
881 '223 '.join(' ', @paths);
885 my ($self, $line) = @_;
886 do_write($self, $line . "\r\n");
890 my ($self, $line) = @_;
891 do_more($self, $line . "\r\n");
895 my ($self, $data) = @_;
896 my $done = $self->write($data);
897 return if $self->{closed};
899 # Do not watch for readability if we have data in the queue,
900 # instead re-enable watching for readability when we can
901 $self->watch_read(0) if (!$done || $self->{long_res});
907 my ($self, $fmt, @args) = @_;
908 printf { $self->{nntpd}->{err} } $fmt."\n", @args;
912 my ($self, $fmt, @args) = @_;
913 printf { $self->{nntpd}->{out} } $fmt."\n", @args;
916 use constant MSG_MORE => ($^O eq 'linux') ? 0x8000 : 0;
919 my ($self, $data) = @_;
920 if (MSG_MORE && !$self->{write_buf_size}) {
921 my $n = send($self->{sock}, $data, MSG_MORE);
923 my $dlen = length($data);
924 return 1 if $n == $dlen; # all done!
925 $data = substr($data, $n, $dlen - $n);
928 do_write($self, $data);
931 # callbacks for Danga::Socket
933 sub event_hup { $_[0]->close }
934 sub event_err { $_[0]->close }
938 update_idle_time($self);
939 # only continue watching for readability when we are done writing:
940 if ($self->write(undef) == 1 && !$self->{long_res}) {
941 $self->watch_read(1);
947 use constant LINE_MAX => 512; # RFC 977 section 2.3
950 my $buf = $self->read(LINE_MAX) or return $self->close;
951 $self->{rbuf} .= $$buf;
952 while ($r > 0 && $self->{rbuf} =~ s/\A\s*([^\r\n]+)\r?\n//) {
954 return $self->close if $line =~ /[[:cntrl:]]/s;
956 my $fd = $self->{fd};
957 $r = eval { process_line($self, $line) };
958 my $d = $self->{long_res} ?
959 " deferred[$fd]" : '';
960 out($self, "[$fd] %s - %0.6f$d", $line, now() - $t0);
963 return $self->close if $r < 0;
964 my $len = length($self->{rbuf});
965 return $self->close if ($len >= LINE_MAX);
966 update_idle_time($self);
970 my ($self, $bool) = @_;
971 my $rv = $self->SUPER::watch_read($bool);
972 if ($bool && $self->{rbuf} ne '') {
973 # Force another read if there is a pipelined request.
974 # We don't know if the socket has anything for us to read,
975 # and we must double-check again by the time the timer fires
976 # in case we really did dispatch a read event and started
977 # another long response.
979 $nextt ||= PublicInbox::EvCleanup::asap(*next_tick);
984 sub not_idle_long ($$) {
985 my ($self, $now) = @_;
986 defined(my $fd = $self->{fd}) or return;
987 my $ary = $EXPMAP->{$fd} or return;
988 my $exp_at = $ary->[0] + $EXPTIME;
992 # for graceful shutdown in PublicInbox::Daemon:
994 my ($self, $now) = @_;
995 ($self->{rbuf} ne '' || $self->{long_res} || $self->{write_buf_size} ||
996 not_idle_long($self, $now));