module:set_global(); local server = require "net.http.server"; local codes = require "net.http.codes"; local xml_escape = require "util.stanza".xml_escape; local render = require "util.interpolation".new("%b{}", xml_escape); local show_private = module:get_option_boolean("http_errors_detailed", false); local always_serve = module:get_option_boolean("http_errors_always_show", true); local default_message = { module:get_option_string("http_errors_default_message", "That's all I know.") }; local default_messages = { [400] = { "What kind of request do you call that??" }; [403] = { "You're not allowed to do that." }; [404] = { "Whatever you were looking for is not here. %"; "Where did you put it?", "It's behind you.", "Keep looking." }; [500] = { "% Check your error log for more info."; "Gremlins.", "It broke.", "Don't look at me." }; }; local messages = setmetatable(module:get_option("http_errors_messages", {}), { __index = default_messages }); local html = [[ <!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>{title}</title> <style> body{ margin-top:14%; text-align:center; background-color:#F8F8F8; font-family:sans-serif; } h1{ font-size:xx-large; } p{ font-size:x-large; } p+p { font-size:large; font-family:courier; } </style> </head> <body> <h1>{title}</h1> <p>{message}</p> <p>{extra?}</p> </body> </html> ]]; local function get_page(code, extra) local message = messages[code]; if always_serve or message then message = message or default_message; return render(html, { title = rawget(codes, code) or ("Code "..tostring(code)); message = message[1]:gsub("%%", function () return message[math.random(2, math.max(#message,2))]; end); extra = extra; }); end end module:hook_object_event(server, "http-error", function (event) if event.response then event.response.headers.content_type = "text/html; charset=utf-8"; end return get_page(event.code, (show_private and event.private_message) or event.message); end);