Software / code / prosody
Diff
plugins/mod_http_errors.lua @ 4711:4ddf3ba0c749
mod_http_errors: Module to handle HTTP errors with a HTML page
| author | Matthew Wild <mwild1@gmail.com> |
|---|---|
| date | Thu, 26 Apr 2012 15:16:29 +0100 |
| child | 4737:7b9e2a8c4710 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/plugins/mod_http_errors.lua Thu Apr 26 15:16:29 2012 +0100 @@ -0,0 +1,75 @@ +module:set_global(); +module:depends("http"); + +local server = require "net.http.server"; +local codes = require "net.http.codes"; +local termcolours = require "util.termcolours"; + +local show_private = module:get_option_boolean("http_errors_detailed", false); + +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"> + <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>$extra</p> +</body> +</html>]]; +html = html:gsub("%s%s+", ""); + +local entities = { + ["<"] = "<", [">"] = ">", ["&"] = "&", + ["'"] = "'", ["\""] = """, ["\n"] = "<br/>", +}; + +local function tohtml(plain) + return (plain:gsub("[<>&'\"\n]", entities)); + +end + +local function get_page(code, extra) + local message = messages[code]; + if message then + return (html:gsub("$(%a+)", { + title = rawget(codes, code) or ("Code "..tostring(code)); + message = message[1]:gsub("%%", function () + return message[math.random(2, math.max(#message,2))]; + end); + extra = tohtml(extra or ""); + })); + end +end + +module:hook_object_event(server, "http-error", function (event) + return get_page(event.code, (show_private and event.private_message) or event.message); +end);
