mod_http_errors: Add way to reuse the error page template

module:fire_event("http-message", {title = "hello"; message = "world"})

Goal is to enable consistent messages from Prosody. Not necessarily
error messages, but warnings or just notices.

This does cause some drift in the purpose of mod_http_errors, but that's
okay.

1 files changed, 7 insertions, 0 deletions

diff --git a/plugins/mod_http_errors.lua b/plugins/mod_http_errors.lua
index 2915a3e3..19433aee 100644
--- a/plugins/mod_http_errors.lua
+++ b/plugins/mod_http_errors.lua
@@ -64,6 +64,13 @@ module:hook_object_event(server, "http-error", function (event)
 	return get_page(event.code, (show_private and event.private_message) or event.message or (event.error and event.error.text));
 end);
 
+module:hook("http-message", function (event)
+	if event.response then
+		event.response.headers.content_type = "text/html; charset=utf-8";
+	end
+	return render(html, event);
+end);
+
 module:hook_object_event(server, "http-error", function (event)
 	local request, response = event.request, event.response;
 	if request and response and request.path == "/" and response.status_code == 404 then