cockpit_web_response_error (CockpitWebResponse *self,
                            guint code,
                            GHashTable *headers,
                            const gchar *format,
                            ...)
{
  va_list var_args;
  gchar *reason = NULL;
  gchar *escaped = NULL;
  const gchar *message;
  GBytes *input = NULL;
  GList *output, *l;
  GError *error = NULL;

  g_return_if_fail (COCKPIT_IS_WEB_RESPONSE (self));

  if (format)
    {
      va_start (var_args, format);
      reason = g_strdup_vprintf (format, var_args);
      va_end (var_args);
      message = reason;
    }
  else
    {
      switch (code)
        {
        case 400:
          message = "Bad request";
          break;
        case 401:
          message = "Not Authorized";
          break;
        case 403:
          message = "Forbidden";
          break;
        case 404:
          message = "Not Found";
          break;
        case 405:
          message = "Method Not Allowed";
          break;
        case 413:
          message = "Request Entity Too Large";
          break;
        case 502:
          message = "Remote Page is Unavailable";
          break;
        case 500:
          message = "Internal Server Error";
          break;
        default:
          if (code < 100)
            reason = g_strdup_printf ("%u Continue", code);
          else if (code < 200)
            reason = g_strdup_printf ("%u OK", code);
          else if (code < 300)
            reason = g_strdup_printf ("%u Moved", code);
          else
            reason = g_strdup_printf ("%u Failed", code);
          message = reason;
          break;
        }
    }

  g_debug ("%s: returning error: %u %s", self->logname, code, message);

  if (cockpit_web_failure_resource)
    {
      input = g_resources_lookup_data (cockpit_web_failure_resource, G_RESOURCE_LOOKUP_FLAGS_NONE, &error);
      if (input == NULL)
        {
          g_critical ("couldn't load: %s: %s", cockpit_web_failure_resource, error->message);
          g_error_free (error);
        }
    }

  if (!input)
    input = g_bytes_new_static (default_failure_template, strlen (default_failure_template));
  output = cockpit_template_expand (input, "@@", "@@", substitute_message, (gpointer) message);
  g_bytes_unref (input);

  /* If sending arbitrary messages, make sure they're escaped */
  if (reason)
    {
      g_strstrip (reason);
      escaped = g_uri_escape_string (reason, " :", FALSE);
      message = escaped;
    }

  if (headers)
    {
      if (!g_hash_table_lookup (headers, "Content-Type"))
        g_hash_table_replace (headers, g_strdup ("Content-Type"), g_strdup ("text/html; charset=utf8"));
      cockpit_web_response_headers_full (self, code, message, -1, headers);
    }
  else
    {
      cockpit_web_response_headers (self, code, message, -1, "Content-Type", "text/html; charset=utf8", NULL);
    }

  for (l = output; l != NULL; l = g_list_next (l))
    {
      if (!cockpit_web_response_queue (self, l->data))
        break;
    }
  if (l == NULL)
    cockpit_web_response_complete (self);
  g_list_free_full (output, (GDestroyNotify)g_bytes_unref);

  g_free (reason);
  g_free (escaped);
}
cockpit_web_response_error (CockpitWebResponse *self,
                            guint code,
                            GHashTable *headers,
                            const gchar *format,
                            ...)
{
  va_list var_args;
  gchar *reason = NULL;
  gchar *escaped = NULL;
  const gchar *message;
  GBytes *input = NULL;
  GList *output, *l;
  GError *error = NULL;

  g_return_if_fail (COCKPIT_IS_WEB_RESPONSE (self));

  if (format)
    {
      va_start (var_args, format);
      reason = g_strdup_vprintf (format, var_args);
      va_end (var_args);
      message = reason;
    }
  else
    {
      switch (code)
        {
        case 400:
          message = "Bad request";
          break;
        case 401:
          message = "Not Authorized";
          break;
        case 403:
          message = "Forbidden";
          break;
        case 404:
          message = "Not Found";
          break;
        case 405:
          message = "Method Not Allowed";
          break;
        case 413:
          message = "Request Entity Too Large";
          break;
        case 502:
          message = "Remote Page is Unavailable";
          break;
        case 500:
          message = "Internal Server Error";
          break;
        default:
          if (code < 100)
            reason = g_strdup_printf ("%u Continue", code);
          else if (code < 200)
            reason = g_strdup_printf ("%u OK", code);
          else if (code < 300)
            reason = g_strdup_printf ("%u Moved", code);
          else
            reason = g_strdup_printf ("%u Failed", code);
          message = reason;
          break;
        }
    }

  g_debug ("%s: returning error: %u %s", self->logname, code, message);

  if (cockpit_web_failure_resource)
    {
      input = g_resources_lookup_data (cockpit_web_failure_resource, G_RESOURCE_LOOKUP_FLAGS_NONE, &error);
      if (input == NULL)
        {
          g_critical ("couldn't load: %s: %s", cockpit_web_failure_resource, error->message);
          g_error_free (error);
        }
    }

  if (!input)
    input = g_bytes_new_static (default_failure_template, strlen (default_failure_template));
  output = cockpit_template_expand (input, "@@", "@@", substitute_message, (gpointer) message);
  g_bytes_unref (input);

   
  if (reason)
    {
      g_strstrip (reason);
      escaped = g_uri_escape_string (reason, " :", FALSE);
      message = escaped;
    }

  if (headers)
    {
      if (!g_hash_table_lookup (headers, "Content-Type"))
        g_hash_table_replace (headers, g_strdup ("Content-Type"), g_strdup ("text/html; charset=utf8"));
      cockpit_web_response_headers_full (self, code, message, -1, headers);
    }
  else
    {
      cockpit_web_response_headers (self, code, message, -1, "Content-Type", "text/html; charset=utf8", NULL);
    }

  for (l = output; l != NULL; l = g_list_next (l))
    {
      if (!cockpit_web_response_queue (self, l->data))
        break;
    }
  if (l == NULL)
    cockpit_web_response_complete (self);
  g_list_free_full (output, (GDestroyNotify)g_bytes_unref);

  g_free (reason);
  g_free (escaped);
}