# Copyright (C) 2016-2021 all contributors # License: AGPL-3.0+ # # Plack app redirector for mapping /$NEWSGROUP requests to # the appropriate /$INBOX in PublicInbox::WWW because some # auto-linkifiers cannot handle nntp:// redirects properly. # This is also used directly by PublicInbox::WWW package PublicInbox::NewsWWW; use strict; use warnings; use PublicInbox::Config; use PublicInbox::MID qw(mid_escape); use PublicInbox::Hval qw(prurl); sub new { my ($class, $pi_cfg) = @_; bless { pi_cfg => $pi_cfg // PublicInbox::Config->new }, $class; } sub redirect ($$) { my ($code, $url) = @_; [ $code, [ Location => $url, 'Content-Type' => 'text/plain' ], [ "Redirecting to $url\n" ] ] } sub try_inbox { my ($ibx, $arg) = @_; return if scalar(@$arg) > 1; # do not pass $env since HTTP_HOST may differ my $url = $ibx->base_url or return; my ($mid) = @$arg; eval { $ibx->mm->num_for($mid) } or return; # 302 since the same message may show up on # multiple inboxes and inboxes can be added/reordered $arg->[1] = redirect(302, $url .= mid_escape($mid) . '/'); } sub call { my ($self, $env) = @_; # some links may have the article number in them: # /inbox.foo.bar/123456 my (undef, @parts) = split(m!/!, $env->{PATH_INFO}); @parts or return [ 404, [qw(Content-Type text/plain)], ["404 Not Found\n"] ]; my ($ng, $article) = @parts; my $pi_cfg = $self->{pi_cfg}; if (my $ibx = $pi_cfg->lookup_newsgroup($ng)) { my $url = prurl($env, $ibx->{url}); my $code = 301; if (defined $article && $article =~ /\A[0-9]+\z/) { my $mid = eval { $ibx->mm->mid_for($article) }; if (defined $mid) { # article IDs are not stable across clones, # do not encourage caching/bookmarking them $code = 302; $url .= mid_escape($mid) . '/'; } } return redirect($code, $url); } my @try = (join('/', @parts)); # trailing slash is in the rest of our WWW, so maybe some users # will assume it: if ($parts[-1] eq '') { pop @parts; push @try, join('/', @parts); } my $ALL = $pi_cfg->ALL; if (my $over = $ALL ? $ALL->over : undef) { my $by_eidx_key = $pi_cfg->{-by_eidx_key}; for my $mid (@try) { my ($id, $prev); while (my $x = $over->next_by_mid($mid, \$id, \$prev)) { my $xr3 = $over->get_xref3($x->{num}); for (@$xr3) { s/:[0-9]+:$x->{blob}\z// or next; my $ibx = $by_eidx_key->{$_} // next; my $url = $ALL->base_url($env) // $ibx->base_url // next; $url .= mid_escape($mid) . '/'; return redirect(302, $url); } } } } else { # slow path, scan every inbox for my $mid (@try) { my $arg = [ $mid ]; # [1] => result $pi_cfg->each_inbox(\&try_inbox, $arg); return $arg->[1] if $arg->[1]; } } [ 404, [qw(Content-Type text/plain)], ["404 Not Found\n"] ]; } 1;