Revert "Bug 1893698 - Remove the cache-friendly redirect from / to /h…

…ome that originally addressed a DoS from Firefox version 52"

This reverts commit d95c7d7.

Bugzilla/App.pm

@@ -24,6 +24,7 @@ use Bugzilla::Logging;
 use Bugzilla::App::API;
 use Bugzilla::App::BouncedEmails;
 use Bugzilla::App::CGI;
+use Bugzilla::App::Main;
 use Bugzilla::App::OAuth2::Provider::Clients;
 use Bugzilla::App::SES;
 use Bugzilla::App::Static;
@@ -209,6 +210,7 @@ sub setup_routes {
   Bugzilla::App::API->setup_routes($r);
   Bugzilla::App::BouncedEmails->setup_routes($r);
   Bugzilla::App::CGI->setup_routes($r);
+  Bugzilla::App::Main->setup_routes($r);
   Bugzilla::App::OAuth2::Provider::Clients->setup_routes($r);
   Bugzilla::App::SES->setup_routes($r);
   Bugzilla::App::BMO::AntiSpam->setup_routes($r);

Bugzilla/App/CGI.pm

@@ -29,8 +29,6 @@ sub setup_routes {
     $class->load_one($name, $file);
     $r->any("/$file")->to("CGI#$name");
   }
-
-  $r->any('/')->to('CGI#index_cgi');
   $r->any('/home')->to('CGI#index_cgi');
 
   $r->any('/bug/<id:num>')->to('CGI#show_bug_cgi');
@@ -50,20 +48,6 @@ sub setup_routes {
     $c->res->code(301);
     $c->redirect_to(Bugzilla->localconfig->basepath . 'enter_bug.cgi');
   });
-
-  $r->get('/testagent.cgi' => sub { shift->render(text => 'OK Mojolicious')});
-
-  $r->add_type('hex32' => qr/[[:xdigit:]]{32}/);
-  $r->post('/announcement/hide/<checksum:hex32>')->to('CGI#announcement_hide');
-}
-
-sub announcement_hide {
-  my ($self) = @_;
-  my $checksum = $self->param('checksum');
-  if ($checksum && $checksum =~ /^[[:xdigit:]]{32}$/) {
-    $self->session->{announcement_checksum} = $checksum;
-  }
-  $self->render(json => {});
 }
 
 sub load_one {

Bugzilla/App/Main.pm

@@ -0,0 +1,47 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+# This Source Code Form is "Incompatible With Secondary Licenses", as
+# defined by the Mozilla Public License, v. 2.0.
+
+package Bugzilla::App::Main;
+use Mojo::Base 'Mojolicious::Controller';
+
+use Bugzilla::Error;
+use Try::Tiny;
+use Bugzilla::Constants;
+
+sub setup_routes {
+  my ($class, $r) = @_;
+
+  $r->any('/')->to('Main#root');
+
+  $r->get('/testagent.cgi')->to('Main#testagent');
+
+  $r->add_type('hex32' => qr/[[:xdigit:]]{32}/);
+  $r->post('/announcement/hide/<checksum:hex32>')->to('Main#announcement_hide');
+}
+
+sub root {
+  my ($c) = @_;
+  $c->res->headers->cache_control('public, max-age=3600, immutable');
+  $c->stash('urlbase', Bugzilla->localconfig->urlbase);
+  $c->render(handler => 'bugzilla');
+}
+
+sub testagent {
+  my ($self) = @_;
+  $self->render(text => "OK Mojolicious");
+}
+
+sub announcement_hide {
+  my ($self) = @_;
+  my $checksum = $self->param('checksum');
+  if ($checksum && $checksum =~ /^[[:xdigit:]]{32}$/) {
+    $self->session->{announcement_checksum} = $checksum;
+  }
+  $self->render(json => {});
+}
+
+1;

template/en/default/main/root.html.tmpl

@@ -0,0 +1,2 @@
+[% SET home_url = c.stash.urlbase _ 'home' %]
+[% PROCESS index.html.tmpl meta_refresh="0;URL='$home_url'" %]