package PublicInbox::NNTP;
use strict;
use warnings;
-use base qw(Danga::Socket);
+use base qw(PublicInbox::DS);
use fields qw(nntpd article rbuf ng long_res);
use PublicInbox::Search;
use PublicInbox::Msgmap;
require PublicInbox::EvCleanup;
use Email::Simple;
use POSIX qw(strftime);
-use Time::HiRes qw(clock_gettime CLOCK_MONOTONIC);
+PublicInbox::DS->import(qw(now msg_more));
use Digest::SHA qw(sha1_hex);
use Time::Local qw(timegm timelocal);
use constant {
r430 => '430 No article with that message-id',
};
-sub now () { clock_gettime(CLOCK_MONOTONIC) };
-
my @OVERVIEW = qw(Subject From Date Message-ID References Xref);
my $OVERVIEW_FMT = join(":\r\n", @OVERVIEW, qw(Bytes Lines)) . ":\r\n";
my $LIST_HEADERS = join("\r\n", @OVERVIEW,
} else {
# pipelined request, we bypassed socket-readiness
# checks to get here:
- event_read($nntp);
+ event_step($nntp);
# maybe there's more pipelined data, or we'll have
# to register it for socket-readiness notifications
- if (!$nntp->{long_res} && !$nntp->{closed}) {
+ if (!$nntp->{long_res} && $nntp->{sock}) {
check_read($nntp);
}
}
sub update_idle_time ($) {
my ($self) = @_;
- my $fd = $self->{fd};
- defined $fd and $EXPMAP->{$fd} = [ now(), $self ];
+ my $sock = $self->{sock} or return;
+ $EXPMAP->{fileno($sock)} = [ now(), $self ];
}
sub expire_old () {
sub new ($$$) {
my ($class, $sock, $nntpd) = @_;
my $self = fields::new($class);
- $self->SUPER::new($sock);
+ $self->SUPER::new($sock, PublicInbox::DS::EPOLLIN());
$self->{nntpd} = $nntpd;
res($self, '201 ' . $nntpd->{servername} . ' ready - post via email');
$self->{rbuf} = '';
- $self->watch_read(1);
update_idle_time($self);
$expt ||= PublicInbox::EvCleanup::later(*expire_old);
$self;
# returns 1 if we can continue, 0 if not due to buffered writes or disconnect
sub process_line ($$) {
my ($self, $l) = @_;
- my ($req, @args) = split(/\s+/, $l);
- return unless defined($req);
+ my ($req, @args) = split(/[ \t]/, $l);
+ return 1 unless defined($req); # skip blank line
$req = lc($req);
$req = eval {
no strict 'refs';
my $res = eval { $req->($self, @args) };
my $err = $@;
- if ($err && !$self->{closed}) {
+ if ($err && $self->{sock}) {
local $/ = "\n";
chomp($l);
err($self, 'error from: %s (%s)', $l, $err);
sub list_overview_fmt ($) {
my ($self) = @_;
- do_more($self, $OVERVIEW_FMT);
+ msg_more($self, $OVERVIEW_FMT);
}
sub list_headers ($;$) {
my ($self) = @_;
- do_more($self, $LIST_HEADERS);
+ msg_more($self, $LIST_HEADERS);
}
sub list_active ($;$) {
my ($keep, $skip) = split('!', $newsgroups, 2);
ngpat2re($keep);
ngpat2re($skip);
- my @srch;
+ my @over;
foreach my $ng (@{$self->{nntpd}->{grouplist}}) {
$ng->{newsgroup} =~ $keep or next;
$ng->{newsgroup} =~ $skip and next;
- my $srch = $ng->search or next;
- push @srch, $srch;
+ my $over = $ng->over or next;
+ push @over, $over;
};
- return '.' unless @srch;
+ return '.' unless @over;
my $prev = 0;
long_response($self, sub {
- my $srch = $srch[0];
- my $msgs = $srch->query_ts($ts, $prev);
+ my $over = $over[0];
+ my $msgs = $over->query_ts($ts, $prev);
if (scalar @$msgs) {
more($self, '<' .
join(">\r\n<", map { $_->mid } @$msgs ).
'>');
$prev = $msgs->[-1]->{num};
} else {
- shift @srch;
- if (@srch) { # continue onto next newsgroup
+ shift @over;
+ if (@over) { # continue onto next newsgroup
$prev = 0;
return 1;
} else { # break out of the long response.
sub set_nntp_headers ($$$$$) {
my ($self, $hdr, $ng, $n, $mid) = @_;
+ # why? leafnode requires a Path: header for some inexplicable
+ # reason. We'll fake the shortest one possible.
+ $hdr->header_set('Path', 'y');
+
+ # leafnode (and maybe other NNTP clients) have trouble dealing
+ # with v2 messages which have multiple Message-IDs (either due
+ # to our own content-based dedupe or buggy git-send-email versions).
+ my @mids = $hdr->header('Message-ID');
+ if (scalar(@mids) > 1) {
+ my $mid0 = "<$mid>";
+ $hdr->header_set('Message-ID', $mid0);
+ my @alt = $hdr->header('X-Alt-Message-ID');
+ my %seen = map { $_ => 1 } (@alt, $mid0);
+ foreach my $m (@mids) {
+ next if $seen{$m}++;
+ push @alt, $m;
+ }
+ $hdr->header_set('X-Alt-Message-ID', @alt);
+ }
+
# clobber some
my $xref = xref($self, $ng, $n, $mid);
$hdr->header_set('Xref', $xref);
- $xref =~ s/:\d+//g;
+ $xref =~ s/:[0-9]+//g;
$hdr->header_set('Newsgroups', (split(/ /, $xref, 2))[1]);
header_append($hdr, 'List-Post', "<mailto:$ng->{-primary_address}>");
if (my $url = $ng->base_url) {
my ($n, $mid);
my $err;
if (defined $art) {
- if ($art =~ /\A\d+\z/o) {
+ if ($art =~ /\A[0-9]+\z/) {
$err = '423 no such article number in this group';
$n = int($art);
goto find_mid;
defined $mid or return $err;
}
found:
- my $smsg = $ng->search->{over_ro}->get_art($n) or return $err;
+ my $smsg = $ng->over->get_art($n) or return $err;
my $msg = $ng->msg_by_smsg($smsg) or return $err;
my $s = Email::Simple->new($msg);
if ($set_headers) {
$s->body_set('');
$body =~ s/^\./../smg;
$body =~ s/(?<!\r)\n/\r\n/sg;
- do_more($self, $body);
- do_more($self, "\r\n") unless $body =~ /\r\n\z/s;
+ msg_more($self, $body);
+ msg_more($self, "\r\n") unless $body =~ /\r\n\z/s;
'.'
}
sub set_art {
my ($self, $art) = @_;
- $self->{article} = $art if defined $art && $art =~ /\A\d+\z/;
+ $self->{article} = $art if defined $art && $art =~ /\A[0-9]+\z/;
}
sub _header ($) {
my $hdr = $_[0]->header_obj->as_string;
utf8::encode($hdr);
$hdr =~ s/(?<!\r)\n/\r\n/sg;
+
+ # for leafnode compatibility, we need to ensure Message-ID headers
+ # are only a single line. We can't subclass Email::Simple::Header
+ # and override _default_fold_at in here, either; since that won't
+ # affect messages already in the archive.
+ $hdr =~ s/^(Message-ID:)[ \t]*\r\n[ \t]+([^\r]+)\r\n/$1 $2\r\n/igsm;
+
$hdr
}
my ($n, $mid, $s) = @$r;
set_art($self, $art);
more($self, "220 $n <$mid> article retrieved - head and body follow");
- do_more($self, _header($s));
- do_more($self, "\r\n");
+ msg_more($self, _header($s));
+ msg_more($self, "\r\n");
simple_body_write($self, $s);
}
my ($n, $mid, $s) = @$r;
set_art($self, $art);
more($self, "221 $n <$mid> article retrieved - head follows");
- do_more($self, _header($s));
+ msg_more($self, _header($s));
'.'
}
defined $range or return '420 No article(s) selected';
my ($beg, $end);
my ($min, $max) = $ng->mm->minmax;
- if ($range =~ /\A(\d+)\z/) {
+ if ($range =~ /\A([0-9]+)\z/) {
$beg = $end = $1;
- } elsif ($range =~ /\A(\d+)-\z/) {
+ } elsif ($range =~ /\A([0-9]+)-\z/) {
($beg, $end) = ($1, $max);
- } elsif ($range =~ /\A(\d+)-(\d+)\z/) {
+ } elsif ($range =~ /\A([0-9]+)-([0-9]+)\z/) {
($beg, $end) = ($1, $2);
} else {
return r501;
my ($self, $cb) = @_;
die "BUG: nested long response" if $self->{long_res};
- my $fd = $self->{fd};
+ my $fd = fileno($self->{sock});
defined $fd or return;
# make sure we disable reading during a long response,
# clients should not be sending us stuff and making us do more
my $t0 = now();
$self->{long_res} = sub {
my $more = eval { $cb->() };
- if ($@ || $self->{closed}) {
+ if ($@ || !$self->{sock}) {
$self->{long_res} = undef;
if ($@) {
"%s during long response[$fd] - %0.6f",
$@, now() - $t0);
}
- if ($self->{closed}) {
- out($self, " deferred[$fd] aborted - %0.6f",
- now() - $t0);
- } else {
+ if ($self->{sock}) {
update_idle_time($self);
check_read($self);
+ } else {
+ out($self, " deferred[$fd] aborted - %0.6f",
+ now() - $t0);
}
- } elsif ($more) { # $self->{write_buf_size}:
+ } elsif ($more) { # $self->{wbuf}:
# no recursion, schedule another call ASAP
# but only after all pending writes are done
update_idle_time($self);
}
}
-sub search_header_for {
- my ($srch, $num, $field) = @_;
- my $smsg = $srch->{over_ro}->get_art($num) or return;
+sub over_header_for {
+ my ($over, $num, $field) = @_;
+ my $smsg = $over->get_art($num) or return;
return PublicInbox::SearchMsg::date($smsg) if $field eq 'date';
$smsg->{$field};
}
if (defined $range && $range =~ /\A<(.+)>\z/) { # Message-ID
my ($ng, $n) = mid_lookup($self, $1);
return r430 unless defined $n;
- my $v = search_header_for($ng->search, $n, $field);
+ my $v = over_header_for($ng->over, $n, $field);
hdr_mid_response($self, $xhdr, $ng, $n, $range, $v);
} else { # numeric range
$range = $self->{article} unless defined $range;
- my $srch = $self->{ng}->search;
+ my $over = $self->{ng}->over;
my $mm = $self->{ng}->mm;
my $r = get_range($self, $range);
return $r unless ref $r;
more($self, $xhdr ? r221 : r225);
my $cur = $beg;
long_response($self, sub {
- my $msgs = $srch->query_xover($cur, $end);
+ my $msgs = $over->query_xover($cur, $end);
my $nr = scalar @$msgs or return;
my $tmp = '';
foreach my $s (@$msgs) {
$tmp .= $s->{num} . ' ' . $s->$field . "\r\n";
}
utf8::encode($tmp);
- do_more($self, $tmp);
+ msg_more($self, $tmp);
$cur = $msgs->[-1]->{num} + 1;
});
}
return $r unless ref $r;
my ($beg, $end) = @$r;
my $mm = $ng->mm;
- my $srch = $ng->search;
+ my $over = $ng->over;
more($self, '224 Overview information follows');
long_response($self, sub {
- my $h = search_header_for($srch, $beg, 'references');
+ my $h = over_header_for($over, $beg, 'references');
more($self, "$beg $h") if defined($h);
$beg++ < $end;
});
if ($range && $range =~ /\A<(.+)>\z/) {
my ($ng, $n) = mid_lookup($self, $1);
defined $n or return r430;
- my $smsg = $ng->search->{over_ro}->get_art($n) or return r430;
+ my $smsg = $ng->over->get_art($n) or return r430;
more($self, '224 Overview information follows (multi-line)');
# Only set article number column if it's the current group
return $r unless ref $r;
my ($beg, $end) = @$r;
more($self, "224 Overview information follows for $beg to $end");
- my $srch = $self->{ng}->search;
+ my $over = $self->{ng}->over;
my $cur = $beg;
long_response($self, sub {
- my $msgs = $srch->query_xover($cur, $end);
+ my $msgs = $over->query_xover($cur, $end);
my $nr = scalar @$msgs or return;
# OVERVIEW.FMT
'223 '.join(' ', @paths);
}
-sub res ($$) {
- my ($self, $line) = @_;
- do_write($self, $line . "\r\n");
-}
+sub res ($$) { do_write($_[0], $_[1] . "\r\n") }
-sub more ($$) {
- my ($self, $line) = @_;
- do_more($self, $line . "\r\n");
-}
+sub more ($$) { msg_more($_[0], $_[1] . "\r\n") }
sub do_write ($$) {
- my ($self, $data) = @_;
- my $done = $self->write($data);
- return 0 if $self->{closed};
+ my $self = $_[0];
+ my $done = $self->write(\($_[1]));
+ return 0 unless $self->{sock};
# Do not watch for readability if we have data in the queue,
# instead re-enable watching for readability when we can
printf { $self->{nntpd}->{out} } $fmt."\n", @args;
}
-use constant MSG_MORE => ($^O eq 'linux') ? 0x8000 : 0;
-
-sub do_more ($$) {
- my ($self, $data) = @_;
- if (MSG_MORE && !$self->{write_buf_size}) {
- my $n = send($self->{sock}, $data, MSG_MORE);
- if (defined $n) {
- my $dlen = length($data);
- return 1 if $n == $dlen; # all done!
- $data = substr($data, $n, $dlen - $n);
- }
- }
- do_write($self, $data);
-}
-
-# callbacks for Danga::Socket
+sub event_step {
+ my ($self) = @_;
-sub event_hup { $_[0]->close }
-sub event_err { $_[0]->close }
+ return unless $self->flush_write && $self->{sock};
+ return if $self->{long_res};
-sub event_write {
- my ($self) = @_;
update_idle_time($self);
- # only continue watching for readability when we are done writing:
- if ($self->write(undef) == 1 && !$self->{long_res}) {
- $self->watch_read(1);
- }
-}
+ # only read more requests if we've drained the write buffer,
+ # otherwise we can be buffering infinitely w/o backpressure
-sub event_read {
- my ($self) = @_;
use constant LINE_MAX => 512; # RFC 977 section 2.3
-
- if (index($self->{rbuf}, "\n") < 0) {
- my $buf = $self->read(LINE_MAX) or return $self->close;
- $self->{rbuf} .= $$buf;
+ my $rbuf = \($self->{rbuf});
+ my $r;
+
+ if (index($$rbuf, "\n") < 0) {
+ my $off = length($$rbuf);
+ $r = sysread($self->{sock}, $$rbuf, LINE_MAX, $off);
+ unless (defined $r) {
+ return if $!{EAGAIN};
+ return $self->close;
+ }
+ return $self->close if $r == 0;
}
- my $r = 1;
- while ($r > 0 && $self->{rbuf} =~ s/\A\s*([^\r\n]*)\r?\n//) {
+ $r = 1;
+ while ($r > 0 && $$rbuf =~ s/\A[ \t\r\n]*([^\r\n]*)\r?\n//) {
my $line = $1;
return $self->close if $line =~ /[[:cntrl:]]/s;
my $t0 = now();
- my $fd = $self->{fd};
+ my $fd = fileno($self->{sock});
$r = eval { process_line($self, $line) };
my $d = $self->{long_res} ?
" deferred[$fd]" : '';
}
return $self->close if $r < 0;
- my $len = length($self->{rbuf});
+ my $len = length($$rbuf);
return $self->close if ($len >= LINE_MAX);
update_idle_time($self);
}
} else {
# no pipelined requests available, let the kernel know
# to wake us up if there's more
- $self->watch_read(1); # Danga::Socket::watch_read
+ $self->watch_read(1); # PublicInbox::DS::watch_read
}
}
sub not_idle_long ($$) {
my ($self, $now) = @_;
- defined(my $fd = $self->{fd}) or return;
- my $ary = $EXPMAP->{$fd} or return;
+ my $sock = $self->{sock} or return;
+ my $ary = $EXPMAP->{fileno($sock)} or return;
my $exp_at = $ary->[0] + $EXPTIME;
$exp_at > $now;
}
# for graceful shutdown in PublicInbox::Daemon:
sub busy {
my ($self, $now) = @_;
- ($self->{rbuf} ne '' || $self->{long_res} || $self->{write_buf_size} ||
- not_idle_long($self, $now));
+ ($self->{rbuf} ne '' || $self->{long_res} ||
+ $self->{wbuf} || not_idle_long($self, $now));
}
1;