# Copyright (C) 2016-2019 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); sub new { my ($class, $pi_config) = @_; $pi_config ||= PublicInbox::Config->new; bless { pi_config => $pi_config }, $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!/!, $env->{PATH_INFO}); my ($ng, $article) = @parts; my $pi_config = $self->{pi_config}; if (my $ibx = $pi_config->lookup_newsgroup($ng)) { my $url = PublicInbox::Hval::prurl($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 $res; my @try = (join('/', @parts)); # trailing slash is in the rest of our WWW, so maybe some users # will assume it: if ($parts[-1] eq '') { pop @parts; push @try, join('/', @parts); } foreach my $mid (@try) { my $arg = [ $mid ]; $pi_config->each_inbox(\&try_inbox, $arg); defined($res = $arg->[1]) and last; } $res || [ 404, [qw(Content-Type text/plain)], ["404 Not Found\n"] ]; } 1;