# License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
#
# Each instance of this represents a NNTP client socket
+# fields:
+# nntpd: PublicInbox::NNTPD ref
+# article: per-session current article number
+# ng: PublicInbox::Inbox ref
+# long_cb: long_response private data
package PublicInbox::NNTP;
use strict;
-use warnings;
-use base qw(PublicInbox::DS);
-use fields qw(nntpd article ng long_cb);
+use parent qw(PublicInbox::DS);
use PublicInbox::MID qw(mid_escape $MID_EXTRACT);
use PublicInbox::Eml;
use POSIX qw(strftime);
sub new ($$$) {
my ($class, $sock, $nntpd) = @_;
- my $self = fields::new($class);
+ my $self = bless { nntpd => $nntpd }, $class;
my $ev = EPOLLIN;
my $wbuf;
if ($sock->can('accept_SSL') && !$sock->accept_SSL) {
return CORE::close($sock) if $! != EAGAIN;
- $ev = PublicInbox::TLS::epollbit();
+ $ev = PublicInbox::TLS::epollbit() or return CORE::close($sock);
$wbuf = [ \&PublicInbox::DS::accept_tls_step, \&greet ];
}
$self->SUPER::new($sock, $ev | EPOLLONESHOT);
- $self->{nntpd} = $nntpd;
if ($wbuf) {
$self->{wbuf} = $wbuf;
} else {
sub list_active ($;$) {
my ($self, $wildmat) = @_;
wildmat2re($wildmat);
- foreach my $ng (@{$self->{nntpd}->{grouplist}}) {
- $ng->{newsgroup} =~ $wildmat or next;
- group_line($self, $ng);
+ my $groups = $self->{nntpd}->{groups};
+ for my $ngname (grep(/$wildmat/, @{$self->{nntpd}->{groupnames}})) {
+ group_line($self, $groups->{$ngname});
}
}
sub list_active_times ($;$) {
my ($self, $wildmat) = @_;
wildmat2re($wildmat);
- foreach my $ng (@{$self->{nntpd}->{grouplist}}) {
- $ng->{newsgroup} =~ $wildmat or next;
- my $c = eval { $ng->mm->created_at } || time;
- more($self, "$ng->{newsgroup} $c $ng->{-primary_address}");
+ my $groups = $self->{nntpd}->{groups};
+ for my $ngname (grep(/$wildmat/, @{$self->{nntpd}->{groupnames}})) {
+ my $ibx = $groups->{$ngname};
+ my $c = eval { $ibx->uidvalidity } // time;
+ more($self, "$ngname $c $ibx->{-primary_address}");
}
}
sub list_newsgroups ($;$) {
my ($self, $wildmat) = @_;
wildmat2re($wildmat);
- foreach my $ng (@{$self->{nntpd}->{grouplist}}) {
- $ng->{newsgroup} =~ $wildmat or next;
- my $d = $ng->description;
- more($self, "$ng->{newsgroup} $d");
+ my $groups = $self->{nntpd}->{groups};
+ for my $ngname (grep(/$wildmat/, @{$self->{nntpd}->{groupnames}})) {
+ more($self, "$ngname ".$groups->{$ngname}->description);
}
}
sub group_line ($$) {
my ($self, $ng) = @_;
my ($min, $max) = $ng->mm->minmax;
- more($self, "$ng->{newsgroup} $max $min n") if defined $min && defined $max;
+ more($self, "$ng->{newsgroup} $max $min n");
}
sub cmd_newgroups ($$$;$$) {
# TODO dists
more($self, '231 list of new newsgroups follows');
foreach my $ng (@{$self->{nntpd}->{grouplist}}) {
- my $c = eval { $ng->mm->created_at } || 0;
+ my $c = eval { $ng->uidvalidity } // 0;
next unless $c > $ts;
group_line($self, $ng);
}
$self->{ng} = $ng;
my ($min, $max) = $ng->mm->minmax;
- $min ||= 0;
- $max ||= 0;
$self->{article} = $min;
my $est_size = $max - $min;
"211 $est_size $min $max $group";
$ret;
}
-sub set_nntp_headers ($$$) {
- my ($self, $hdr, $smsg) = @_;
+sub set_nntp_headers ($$) {
+ my ($hdr, $smsg) = @_;
my ($mid) = $smsg->{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).
$hdr->header_set('X-Alt-Message-ID', @alt);
}
- # clobber some
- my $ng = $self->{ng};
- my $xref = xref($self, $ng, $smsg->{num}, $mid);
+ # clobber some existing headers
+ my $ibx = $smsg->{-ibx};
+ my $xref = xref($smsg->{nntp}, $ibx, $smsg->{num}, $mid);
$hdr->header_set('Xref', $xref);
- $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 = $ng->base_url) {
+
+ # RFC 5536 3.1.4
+ my ($server_name, $newsgroups) = split(/ /, $xref, 2);
+ $newsgroups =~ s/:[0-9]+\b//g; # drop NNTP article numbers
+ $newsgroups =~ tr/ /,/;
+ $hdr->header_set('Newsgroups', $newsgroups);
+
+ # *something* here is required for leafnode, try to follow
+ # RFC 5536 3.1.5...
+ $hdr->header_set('Path', $server_name . '!not-for-mail');
+
+ header_append($hdr, 'List-Post', "<mailto:$ibx->{-primary_address}>");
+ if (my $url = $ibx->base_url) {
$mid = mid_escape($mid);
header_append($hdr, 'Archived-At', "<$url$mid/>");
header_append($hdr, 'List-Archive', "<$url>");
}
}
-sub art_lookup ($$) {
- my ($self, $art) = @_;
+sub art_lookup ($$$) {
+ my ($self, $art, $code) = @_;
my $ng = $self->{ng};
my ($n, $mid);
my $err;
}
found:
my $smsg = $ng->over->get_art($n) or return $err;
- $smsg;
+ $smsg->{-ibx} = $ng;
+ if ($code == 223) { # STAT
+ set_art($self, $n);
+ "223 $n <$smsg->{mid}> article retrieved - " .
+ "request text separately";
+ } else { # HEAD | BODY | ARTICLE
+ $smsg->{nntp} = $self;
+ $smsg->{nntp_code} = $code;
+ set_art($self, $art);
+ # this dereferences to `undef'
+ ${git_async_cat($ng->git, $smsg->{blob}, \&blob_cb, $smsg)};
+ }
}
sub msg_body_write ($$) {
$self->{article} = $art if defined $art && $art =~ /\A[0-9]+\z/;
}
-sub msg_hdr_write ($$$) {
- my ($self, $eml, $smsg) = @_;
- set_nntp_headers($self, $eml, $smsg);
+sub msg_hdr_write ($$) {
+ my ($eml, $smsg) = @_;
+ set_nntp_headers($eml, $smsg);
my $hdr = $eml->{hdr} // \(my $x = '');
# fixup old bug from import (pre-a0c07cba0e5d8b6a)
# for leafnode compatibility, we need to ensure Message-ID headers
# are only a single line.
$$hdr =~ s/^(Message-ID:)[ \t]*\r\n[ \t]+([^\r]+)\r\n/$1 $2\r\n/igsm;
- $self->msg_more($$hdr);
+ $smsg->{nntp}->msg_more($$hdr);
}
sub blob_cb { # called by git->cat_async via git_async_cat
my ($bref, $oid, $type, $size, $smsg) = @_;
my $self = $smsg->{nntp};
- my $code = $smsg->{nntp_code} // 220;
+ my $code = $smsg->{nntp_code};
if (!defined($oid)) {
# it's possible to have TOCTOU if an admin runs
# public-inbox-(edit|purge), just move onto the next message
+ warn "E: $smsg->{blob} missing in $smsg->{-ibx}->{inboxdir}\n";
return $self->requeue;
} elsif ($smsg->{blob} ne $oid) {
$self->close;
my $eml = PublicInbox::Eml->new($bref);
if ($code == 220) {
more($self, $r .= 'head and body follow');
- msg_hdr_write($self, $eml, $smsg);
+ msg_hdr_write($eml, $smsg);
$self->msg_more("\r\n");
msg_body_write($self, $bref);
} elsif ($code == 221) {
more($self, $r .= 'head follows');
- msg_hdr_write($self, $eml, $smsg);
+ msg_hdr_write($eml, $smsg);
} elsif ($code == 222) {
more($self, $r .= 'body follows');
msg_body_write($self, $bref);
sub cmd_article ($;$) {
my ($self, $art) = @_;
- my $smsg = art_lookup($self, $art);
- return $smsg unless ref $smsg;
- set_art($self, $art);
- $smsg->{nntp} = $self;
- git_async_cat($self->{ng}->git, $smsg->{blob}, \&blob_cb, $smsg);
- undef;
+ art_lookup($self, $art, 220);
}
sub cmd_head ($;$) {
my ($self, $art) = @_;
- my $smsg = art_lookup($self, $art);
- return $smsg unless ref $smsg;
- set_art($self, $art);
- $smsg->{nntp} = $self;
- $smsg->{nntp_code} = 221;
- git_async_cat($self->{ng}->git, $smsg->{blob}, \&blob_cb, $smsg);
- undef;
+ art_lookup($self, $art, 221);
}
sub cmd_body ($;$) {
my ($self, $art) = @_;
- my $smsg = art_lookup($self, $art);
- return $smsg unless ref $smsg;
- set_art($self, $art);
- $smsg->{nntp} = $self;
- $smsg->{nntp_code} = 222;
- git_async_cat($self->{ng}->git, $smsg->{blob}, \&blob_cb, $smsg);
- undef;
+ art_lookup($self, $art, 222);
}
sub cmd_stat ($;$) {
my ($self, $art) = @_;
- my $r = art_lookup($self, $art);
- return $r unless ref $r;
- my ($n, $mid) = @$r;
- set_art($self, $art);
- "223 $n <$mid> article retrieved - request text separately";
+ art_lookup($self, $art, 223); # art may be msgid
}
sub cmd_ihave ($) { '435 article not wanted - do not send it' }