Tag not found responses from file servers with X-Cascade header

Prepares internal file servers for revised Rack::Cascade that looks
for a magic header instead of discarding all 404 responses.

3 files changed, 11 insertions, 5 deletions

diff --git a/lib/rack/directory.rb b/lib/rack/directory.rb
index acdd3029..927ac0c9 100644
--- a/lib/rack/directory.rb
+++ b/lib/rack/directory.rb
@@ -71,7 +71,9 @@ table { width:100%%; }
 
       body = "Forbidden\n"
       size = Rack::Utils.bytesize(body)
-      return [403, {"Content-Type" => "text/plain","Content-Length" => size.to_s}, [body]]
+      return [403, {"Content-Type" => "text/plain",
+        "Content-Length" => size.to_s,
+        "X-Cascade" => "pass"}, [body]]
     end
 
     def list_directory
@@ -123,7 +125,9 @@ table { width:100%%; }
     def entity_not_found
       body = "Entity not found: #{@path_info}\n"
       size = Rack::Utils.bytesize(body)
-      return [404, {"Content-Type" => "text/plain", "Content-Length" => size.to_s}, [body]]
+      return [404, {"Content-Type" => "text/plain",
+        "Content-Length" => size.to_s,
+        "X-Cascade" => "pass"}, [body]]
     end
 
     def each
diff --git a/lib/rack/file.rb b/lib/rack/file.rb
index fe62bd6b..14af7b3b 100644
--- a/lib/rack/file.rb
+++ b/lib/rack/file.rb
@@ -45,7 +45,8 @@ module Rack
     def forbidden
       body = "Forbidden\n"
       [403, {"Content-Type" => "text/plain",
-             "Content-Length" => body.size.to_s},
+             "Content-Length" => body.size.to_s,
+             "X-Cascade" => "pass"},
        [body]]
     end
 
@@ -73,7 +74,8 @@ module Rack
     def not_found
       body = "File not found: #{@path_info}\n"
       [404, {"Content-Type" => "text/plain",
-         "Content-Length" => body.size.to_s},
+         "Content-Length" => body.size.to_s,
+         "X-Cascade" => "pass"},
        [body]]
     end
 
diff --git a/lib/rack/urlmap.rb b/lib/rack/urlmap.rb
index fcf6616c..262dec8d 100644
--- a/lib/rack/urlmap.rb
+++ b/lib/rack/urlmap.rb
@@ -48,7 +48,7 @@ module Rack
             'SCRIPT_NAME' => (script_name + location),
             'PATH_INFO'   => path[location.size..-1]))
       }
-      [404, {"Content-Type" => "text/plain"}, ["Not Found: #{path}"]]
+      [404, {"Content-Type" => "text/plain", "X-Cascade" => "pass"}, ["Not Found: #{path}"]]
     end
   end
 end