-# Copyright (C) 2015-2019 all contributors <meta@public-inbox.org>
+# Copyright (C) 2015-2020 all contributors <meta@public-inbox.org>
# License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
#
# Each instance of this represents a NNTP client socket
use warnings;
use base qw(PublicInbox::DS);
use fields qw(nntpd article ng long_cb);
-use PublicInbox::MID qw(mid_escape);
-use Email::Simple;
+use PublicInbox::MID qw(mid_escape $MID_EXTRACT);
+use PublicInbox::Eml;
use POSIX qw(strftime);
use PublicInbox::DS qw(now);
use Digest::SHA qw(sha1_hex);
};
use PublicInbox::Syscall qw(EPOLLIN EPOLLONESHOT);
use Errno qw(EAGAIN);
-
+my $ONE_MSGID = qr/\A$MID_EXTRACT\z/;
my @OVERVIEW = qw(Subject From Date Message-ID References);
my $OVERVIEW_FMT = join(":\r\n", @OVERVIEW, qw(Bytes Lines), '') .
"Xref:full\r\n";
LIST ACTIVE ACTIVE.TIMES NEWSGROUPS OVERVIEW.FMT\r
HDR\r
OVER\r
-
-my $have_deflate;
+COMPRESS DEFLATE\r
sub greet ($) { $_[0]->write($_[0]->{nntpd}->{greet}) };
# returns 1 if we can continue, 0 if not due to buffered writes or disconnect
sub process_line ($$) {
my ($self, $l) = @_;
- my ($req, @args) = split(/[ \t]/, $l);
+ my ($req, @args) = split(/[ \t]+/, $l);
return 1 unless defined($req); # skip blank line
$req = $self->can('cmd_'.lc($req));
return res($self, '500 command not recognized') unless $req;
$gmt =~ /\A(?:UTC|GMT)\z/i or die "GM invalid: $gmt";
$gmt = 1;
}
- my @now = $gmt ? gmtime : localtime;
my ($YYYY, $MM, $DD);
if (bytes::length($date) == 8) { # RFC 3977 allows YYYYMMDD
($YYYY, $MM, $DD) = unpack('A4A2A2', $date);
} else { # legacy clients send YYMMDD
- ($YYYY, $MM, $DD) = unpack('A2A2A2', $date);
+ my $YY;
+ ($YY, $MM, $DD) = unpack('A2A2A2', $date);
+ my @now = $gmt ? gmtime : localtime;
my $cur_year = $now[5] + 1900;
- if ($YYYY > $cur_year) {
- $YYYY += int($cur_year / 1000) * 1000 - 100;
- }
+ my $cur_cent = int($cur_year / 100) * 100;
+ $YYYY = (($YY + $cur_cent) > $cur_year) ?
+ ($YY + 1900) : ($YY + $cur_cent);
}
if ($gmt) {
timegm($ss, $mm, $hh, $DD, $MM - 1, $YYYY);
sub header_append ($$$) {
my ($hdr, $k, $v) = @_;
- my @v = $hdr->header($k);
+ my @v = $hdr->header_raw($k);
foreach (@v) {
return if $v eq $_;
}
# 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');
+ my @mids = $hdr->header_raw('Message-ID');
if (scalar(@mids) > 1) {
my $mid0 = "<$mid>";
$hdr->header_set('Message-ID', $mid0);
- my @alt = $hdr->header('X-Alt-Message-ID');
+ my @alt = $hdr->header_raw('X-Alt-Message-ID');
my %seen = map { $_ => 1 } (@alt, $mid0);
- foreach my $m (@mids) {
- next if $seen{$m}++;
- push @alt, $m;
- }
+ push(@alt, grep { !$seen{$_}++ } @mids);
$hdr->header_set('X-Alt-Message-ID', @alt);
}
$err = '423 no such article number in this group';
$n = int($art);
goto find_mid;
- } elsif ($art =~ /\A<([^>]+)>\z/) {
+ } elsif ($art =~ $ONE_MSGID) {
$mid = $1;
$err = r430;
$n = $ng->mm->num_for($mid) if $ng;
my $smsg = $ng->over->get_art($n) or return $err;
my $msg = $ng->msg_by_smsg($smsg) or return $err;
- # Email::Simple->new will modify $msg in-place as documented
- # in its manpage, so what's left is the body and we won't need
- # to call Email::Simple::body(), later
- my $hdr = Email::Simple->new($msg)->header_obj;
+ # PublicInbox::Eml->new will modify $msg in-place, so what's
+ # left is the body and we won't need to call ->body(), later
+ my $hdr = PublicInbox::Eml->new($msg)->header_obj;
set_nntp_headers($self, $hdr, $ng, $n, $mid) if $set_headers;
[ $n, $mid, $msg, $hdr ];
}
sub msg_hdr_write ($$$) {
my ($self, $hdr, $body_follows) = @_;
$hdr = $hdr->as_string;
+ # fixup old bug from import (pre-a0c07cba0e5d8b6a)
+ $hdr =~ s/\A[\r\n]*From [^\r\n]*\r?\n//s;
utf8::encode($hdr);
$hdr =~ s/(?<!\r)\n/\r\n/sg; # Alpine barfs without this
# for leafnode compatibility, we need to ensure Message-ID headers
- # are only a single line. We can't subclass Email::Simple::Header
- # and override _default_fold_at in here, either; since that won't
- # affect messages already in the archive.
+ # are only a single line.
$hdr =~ s/^(Message-ID:)[ \t]*\r\n[ \t]+([^\r]+)\r\n/$1 $2\r\n/igsm;
$hdr .= "\r\n" if $body_follows;
$self->msg_more($hdr);
sub long_step {
my ($self) = @_;
# wbuf is unset or empty, here; {long} may add to it
- my ($cb, $t0, @args) = @{$self->{long_cb}};
+ my ($fd, $cb, $t0, @args) = @{$self->{long_cb}};
my $more = eval { $cb->($self, @args) };
if ($@ || !$self->{sock}) { # something bad happened...
delete $self->{long_cb};
my $elapsed = now() - $t0;
- my $fd = fileno($self->{sock});
if ($@) {
err($self,
"%s during long response[$fd] - %0.6f",
# each other's data
$self->zflush;
- # no recursion, schedule another call ASAP
- # but only after all pending writes are done
- my $wbuf = $self->{wbuf} ||= [];
- push @$wbuf, \&long_step;
+ # no recursion, schedule another call ASAP, but only after
+ # all pending writes are done. autovivify wbuf:
+ my $new_size = push(@{$self->{wbuf}}, \&long_step);
# wbuf may be populated by $cb, no need to rearm if so:
- $self->requeue if scalar(@$wbuf) == 1;
+ $self->requeue if $new_size == 1;
} else { # all done!
delete $self->{long_cb};
res($self, '.');
my $elapsed = now() - $t0;
my $fd = fileno($self->{sock});
out($self, " deferred[$fd] done - %0.6f", $elapsed);
- my $wbuf = $self->{wbuf};
+ my $wbuf = $self->{wbuf}; # do NOT autovivify
$self->requeue unless $wbuf && @$wbuf;
}
}
sub long_response ($$;@) {
my ($self, $cb, @args) = @_; # cb returns true if more, false if done
- $self->{sock} or return;
+ my $sock = $self->{sock} or return;
# make sure we disable reading during a long response,
# clients should not be sending us stuff and making us do more
# work while we are stream a response to them
- $self->{long_cb} = [ $cb, now(), @args ];
+ $self->{long_cb} = [ fileno($sock), $cb, now(), @args ];
long_step($self); # kick off!
undef;
}
sub hdr_message_id ($$$) { # optimize XHDR Message-ID [range] for slrnpull.
my ($self, $xhdr, $range) = @_;
- if (defined $range && $range =~ /\A<(.+)>\z/) { # Message-ID
+ if (defined $range && $range =~ $ONE_MSGID) {
my ($ng, $n) = mid_lookup($self, $1);
return r430 unless $n;
hdr_mid_response($self, $xhdr, $ng, $n, $range, $range);
sub hdr_xref ($$$) { # optimize XHDR Xref [range] for rtin
my ($self, $xhdr, $range) = @_;
- if (defined $range && $range =~ /\A<(.+)>\z/) { # Message-ID
+ if (defined $range && $range =~ $ONE_MSGID) {
my $mid = $1;
my ($ng, $n) = mid_lookup($self, $mid);
return r430 unless $n;
sub over_header_for {
my ($over, $num, $field) = @_;
my $smsg = $over->get_art($num) or return;
- return PublicInbox::SearchMsg::date($smsg) if $field eq 'date';
+ return PublicInbox::Smsg::date($smsg) if $field eq 'date';
$smsg->{$field};
}
-sub searchmsg_range_i {
+sub smsg_range_i {
my ($self, $beg, $end, $field) = @_;
my $over = $self->{ng}->over;
my $msgs = $over->query_xover($$beg, $end);
$$beg = $msgs->[-1]->{num} + 1;
}
-sub hdr_searchmsg ($$$$) {
+sub hdr_smsg ($$$$) {
my ($self, $xhdr, $field, $range) = @_;
- if (defined $range && $range =~ /\A<(.+)>\z/) { # Message-ID
+ if (defined $range && $range =~ $ONE_MSGID) {
my ($ng, $n) = mid_lookup($self, $1);
return r430 unless defined $n;
my $v = over_header_for($ng->over, $n, $field);
my $r = get_range($self, $range);
return $r unless ref $r;
more($self, $xhdr ? r221 : r225);
- long_response($self, \&searchmsg_range_i, @$r, $field);
+ long_response($self, \&smsg_range_i, @$r, $field);
}
}
hdr_xref($self, $xhdr, $range);
} elsif ($sub =~ /\A(?:subject|references|date|from|to|cc|
bytes|lines)\z/x) {
- hdr_searchmsg($self, $xhdr, $sub, $range);
+ hdr_smsg($self, $xhdr, $sub, $range);
} elsif ($sub =~ /\A:(bytes|lines)\z/) {
- hdr_searchmsg($self, $xhdr, $1, $range);
+ hdr_smsg($self, $xhdr, $1, $range);
} else {
$xhdr ? (r221 . "\r\n.") : "503 HDR not permitted on $header";
}
my $s = join("\t", $num,
$smsg->{subject},
$smsg->{from},
- PublicInbox::SearchMsg::date($smsg),
+ PublicInbox::Smsg::date($smsg),
"<$smsg->{mid}>",
$smsg->{references},
$smsg->{bytes},
sub cmd_over ($;$) {
my ($self, $range) = @_;
- if ($range && $range =~ /\A<(.+)>\z/) {
+ if ($range && $range =~ $ONE_MSGID) {
my ($ng, $n) = mid_lookup($self, $1);
defined $n or return r430;
my $smsg = $ng->over->get_art($n) or return r430;
}
}
+sub xover_i {
+ my ($self, $beg, $end) = @_;
+ my $ng = $self->{ng};
+ my $msgs = $ng->over->query_xover($$beg, $end);
+ my $nr = scalar @$msgs or return;
+
+ # OVERVIEW.FMT
+ more($self, join("\r\n", map {
+ over_line($self, $ng, $_->{num}, $_);
+ } @$msgs));
+ $$beg = $msgs->[-1]->{num} + 1;
+}
+
sub cmd_xover ($;$) {
my ($self, $range) = @_;
$range = $self->{article} unless defined $range;
return $r unless ref $r;
my ($beg, $end) = @$r;
more($self, "224 Overview information follows for $$beg to $end");
- my $over = $self->{ng}->over;
- my $cur = $$beg;
- long_response($self, sub {
- my $msgs = $over->query_xover($cur, $end);
- my $nr = scalar @$msgs or return;
-
- # OVERVIEW.FMT
- more($self, join("\r\n", map {
- over_line($self, $self->{ng}, $_->{num}, $_);
- } @$msgs));
- $cur = $msgs->[-1]->{num} + 1;
- });
+ long_response($self, \&xover_i, @$r);
}
sub compressed { undef }
sub cmd_compress ($$) {
my ($self, $alg) = @_;
return '503 Only DEFLATE is supported' if uc($alg) ne 'DEFLATE';
- return r502 if $self->compressed || !$have_deflate;
+ return r502 if $self->compressed;
PublicInbox::NNTPdeflate->enable($self);
$self->requeue;
undef
sub cmd_xpath ($$) {
my ($self, $mid) = @_;
- return r501 unless $mid =~ /\A<(.+)>\z/;
+ return r501 unless $mid =~ $ONE_MSGID;
$mid = $1;
my @paths;
foreach my $ng (values %{$self->{nntpd}->{groups}}) {
($self->{rbuf} || $self->{wbuf} || $self->not_idle_long($now));
}
-# this is an import to prevent "perl -c" from complaining about fields
-sub import {
- $have_deflate = eval { require PublicInbox::NNTPdeflate } and
- $CAPABILITIES .= "COMPRESS DEFLATE\r\n";
-}
-
1;