1 files changed, 25 insertions, 0 deletions
diff --git a/repoze/bfg/wsgi.py b/repoze/bfg/wsgi.py
index b0feef29e..38cca58a3 100644
--- a/repoze/bfg/wsgi.py
+++ b/repoze/bfg/wsgi.py
@@ -1,3 +1,5 @@
+from cgi import escape
+
 try:
     from functools import wraps
 except ImportError:
@@ -31,3 +33,26 @@ def wsgiapp(wrapped):
     def decorator(context, request):
         return request.get_response(wrapped)
     return wraps(wrapped)(decorator) # pickleability
+
+class HTTPException(object):
+    def __call__(self, environ, start_response, exc_info=False):
+        try:
+            msg = escape(environ['message'])
+        except KeyError:
+            msg = ''
+        html = """<body>
+        <html><title>%s</title><body><h1>%s</h1>
+        <code>%s</code>
+        """ % (self.status, self.status, msg)
+        headers = [('Content-Length', len(html)), ('Content-Type', 'text/html')]
+        start_response(self.status, headers)
+        return [html]
+
+class NotFound(HTTPException):
+    """ The default NotFound WSGI application """
+    status = '404 Not Found'
+
+class Unauthorized(HTTPException):
+    """ The default Unauthorized WSGI application """
+    status = '401 Unauthorized'
+