prosody: plugins/mod_http_errors.lua@c2a476f4712a (annotated)

4711 4ddf3ba0c749 mod_http_errors: Module to handle HTTP errors with a HTML page Matthew Wild <mwild1@gmail.com> parents: diff changeset	1	module:set_global();
4ddf3ba0c749 mod_http_errors: Module to handle HTTP errors with a HTML page Matthew Wild <mwild1@gmail.com> parents: diff changeset	2
12981 74b9e05af71e plugins: Prefix module imports with prosody namespace Kim Alvefur <zash@zash.se> parents: 11824 diff changeset	3	local server = require "prosody.net.http.server";
74b9e05af71e plugins: Prefix module imports with prosody namespace Kim Alvefur <zash@zash.se> parents: 11824 diff changeset	4	local codes = require "prosody.net.http.codes";
74b9e05af71e plugins: Prefix module imports with prosody namespace Kim Alvefur <zash@zash.se> parents: 11824 diff changeset	5	local xml_escape = require "prosody.util.stanza".xml_escape;
74b9e05af71e plugins: Prefix module imports with prosody namespace Kim Alvefur <zash@zash.se> parents: 11824 diff changeset	6	local render = require "prosody.util.interpolation".new("%b{}", xml_escape);
4711 4ddf3ba0c749 mod_http_errors: Module to handle HTTP errors with a HTML page Matthew Wild <mwild1@gmail.com> parents: diff changeset	7
4ddf3ba0c749 mod_http_errors: Module to handle HTTP errors with a HTML page Matthew Wild <mwild1@gmail.com> parents: diff changeset	8	local show_private = module:get_option_boolean("http_errors_detailed", false);
4737 7b9e2a8c4710 mod_http_errors: Add two new config options, http_errors_always_show (show even for unknown errors) and http_errors_default_message (message for unknown errors) Matthew Wild <mwild1@gmail.com> parents: 4711 diff changeset	9	local always_serve = module:get_option_boolean("http_errors_always_show", true);
7b9e2a8c4710 mod_http_errors: Add two new config options, http_errors_always_show (show even for unknown errors) and http_errors_default_message (message for unknown errors) Matthew Wild <mwild1@gmail.com> parents: 4711 diff changeset	10	local default_message = { module:get_option_string("http_errors_default_message", "That's all I know.") };
4711 4ddf3ba0c749 mod_http_errors: Module to handle HTTP errors with a HTML page Matthew Wild <mwild1@gmail.com> parents: diff changeset	11	local default_messages = {
4ddf3ba0c749 mod_http_errors: Module to handle HTTP errors with a HTML page Matthew Wild <mwild1@gmail.com> parents: diff changeset	12	[400] = { "What kind of request do you call that??" };
4ddf3ba0c749 mod_http_errors: Module to handle HTTP errors with a HTML page Matthew Wild <mwild1@gmail.com> parents: diff changeset	13	[403] = { "You're not allowed to do that." };
4ddf3ba0c749 mod_http_errors: Module to handle HTTP errors with a HTML page Matthew Wild <mwild1@gmail.com> parents: diff changeset	14	[404] = { "Whatever you were looking for is not here. %";
4ddf3ba0c749 mod_http_errors: Module to handle HTTP errors with a HTML page Matthew Wild <mwild1@gmail.com> parents: diff changeset	15	"Where did you put it?", "It's behind you.", "Keep looking." };
4ddf3ba0c749 mod_http_errors: Module to handle HTTP errors with a HTML page Matthew Wild <mwild1@gmail.com> parents: diff changeset	16	[500] = { "% Check your error log for more info.";
4ddf3ba0c749 mod_http_errors: Module to handle HTTP errors with a HTML page Matthew Wild <mwild1@gmail.com> parents: diff changeset	17	"Gremlins.", "It broke.", "Don't look at me." };
11407 747e8245f180 mod_http_errors: Add some silly variations for the '/' page Kim Alvefur <zash@zash.se> parents: 11399 diff changeset	18	["/"] = {
747e8245f180 mod_http_errors: Add some silly variations for the '/' page Kim Alvefur <zash@zash.se> parents: 11399 diff changeset	19	"A study in simplicity.";
747e8245f180 mod_http_errors: Add some silly variations for the '/' page Kim Alvefur <zash@zash.se> parents: 11399 diff changeset	20	"Better catch it!";
747e8245f180 mod_http_errors: Add some silly variations for the '/' page Kim Alvefur <zash@zash.se> parents: 11399 diff changeset	21	"Don't just stand there, go after it!";
747e8245f180 mod_http_errors: Add some silly variations for the '/' page Kim Alvefur <zash@zash.se> parents: 11399 diff changeset	22	"Well, say something, before it runs too far!";
747e8245f180 mod_http_errors: Add some silly variations for the '/' page Kim Alvefur <zash@zash.se> parents: 11399 diff changeset	23	"Welcome to the world of XMPP!";
747e8245f180 mod_http_errors: Add some silly variations for the '/' page Kim Alvefur <zash@zash.se> parents: 11399 diff changeset	24	"You can do anything in XMPP!"; -- "The only limit is XML.";
747e8245f180 mod_http_errors: Add some silly variations for the '/' page Kim Alvefur <zash@zash.se> parents: 11399 diff changeset	25	"You can do anything with Prosody!"; -- the only limit is memory?
747e8245f180 mod_http_errors: Add some silly variations for the '/' page Kim Alvefur <zash@zash.se> parents: 11399 diff changeset	26	};
4711 4ddf3ba0c749 mod_http_errors: Module to handle HTTP errors with a HTML page Matthew Wild <mwild1@gmail.com> parents: diff changeset	27	};
4ddf3ba0c749 mod_http_errors: Module to handle HTTP errors with a HTML page Matthew Wild <mwild1@gmail.com> parents: diff changeset	28
4ddf3ba0c749 mod_http_errors: Module to handle HTTP errors with a HTML page Matthew Wild <mwild1@gmail.com> parents: diff changeset	29	local messages = setmetatable(module:get_option("http_errors_messages", {}), { __index = default_messages });
4ddf3ba0c749 mod_http_errors: Module to handle HTTP errors with a HTML page Matthew Wild <mwild1@gmail.com> parents: diff changeset	30
4ddf3ba0c749 mod_http_errors: Module to handle HTTP errors with a HTML page Matthew Wild <mwild1@gmail.com> parents: diff changeset	31	local html = [[
4ddf3ba0c749 mod_http_errors: Module to handle HTTP errors with a HTML page Matthew Wild <mwild1@gmail.com> parents: diff changeset	32	<!DOCTYPE html>
4ddf3ba0c749 mod_http_errors: Module to handle HTTP errors with a HTML page Matthew Wild <mwild1@gmail.com> parents: diff changeset	33	<html>
4ddf3ba0c749 mod_http_errors: Module to handle HTTP errors with a HTML page Matthew Wild <mwild1@gmail.com> parents: diff changeset	34	<head>
8367 f91ab40a3105 mod_http_errors: Use util.interpolation to render HTML template Kim Alvefur <zash@zash.se> parents: 8366 diff changeset	35	<meta charset="utf-8">
f91ab40a3105 mod_http_errors: Use util.interpolation to render HTML template Kim Alvefur <zash@zash.se> parents: 8366 diff changeset	36	<title>{title}</title>
f91ab40a3105 mod_http_errors: Use util.interpolation to render HTML template Kim Alvefur <zash@zash.se> parents: 8366 diff changeset	37	<style>
13397 f72ca74de456 mod_http_errors: Simplify CSS via built-in dark mode Kim Alvefur <zash@zash.se> parents: 12981 diff changeset	38	:root{color-scheme:light dark}
f72ca74de456 mod_http_errors: Simplify CSS via built-in dark mode Kim Alvefur <zash@zash.se> parents: 12981 diff changeset	39	body{margin-top:14%;text-align:center;font-family:sans-serif}
11392 60a61c509d87 mod_http_errors: Minify CSS Kim Alvefur <zash@zash.se> parents: 11159 diff changeset	40	h1{font-size:xx-large}
60a61c509d87 mod_http_errors: Minify CSS Kim Alvefur <zash@zash.se> parents: 11159 diff changeset	41	p{font-size:x-large}
11399 d336b28b4002 mod_http_errors: Style tweak Kim Alvefur <zash@zash.se> parents: 11394 diff changeset	42	p.warning>span{font-size:large;background-color:yellow}
11392 60a61c509d87 mod_http_errors: Minify CSS Kim Alvefur <zash@zash.se> parents: 11159 diff changeset	43	p.extra{font-size:large;font-family:courier}
60a61c509d87 mod_http_errors: Minify CSS Kim Alvefur <zash@zash.se> parents: 11159 diff changeset	44	@media(prefers-color-scheme:dark){
11399 d336b28b4002 mod_http_errors: Style tweak Kim Alvefur <zash@zash.se> parents: 11394 diff changeset	45	p.warning>span{background-color:inherit;color:yellow}
11158 dd81a318a794 mod_http_errors: Dark theme! Kim Alvefur <zash@zash.se> parents: 11157 diff changeset	46	}
8367 f91ab40a3105 mod_http_errors: Use util.interpolation to render HTML template Kim Alvefur <zash@zash.se> parents: 8366 diff changeset	47	</style>
4711 4ddf3ba0c749 mod_http_errors: Module to handle HTTP errors with a HTML page Matthew Wild <mwild1@gmail.com> parents: diff changeset	48	</head>
4ddf3ba0c749 mod_http_errors: Module to handle HTTP errors with a HTML page Matthew Wild <mwild1@gmail.com> parents: diff changeset	49	<body>
11666 a8798e04b5c8 mod_http_errors: Allow adding icons on error pages Kim Alvefur <zash@zash.se> parents: 11408 diff changeset	50	<h1>{icon?{icon_raw!?}} {title}</h1>
8367 f91ab40a3105 mod_http_errors: Use util.interpolation to render HTML template Kim Alvefur <zash@zash.se> parents: 8366 diff changeset	51	<p>{message}</p>
11399 d336b28b4002 mod_http_errors: Style tweak Kim Alvefur <zash@zash.se> parents: 11394 diff changeset	52	{warning&<p class="warning"><span>⚠ {warning?} ⚠</span></p>}
11159 8d692a8a8f48 mod_http_errors: Remove 'extra' element when empty Kim Alvefur <zash@zash.se> parents: 11158 diff changeset	53	{extra&<p class="extra">{extra?}</p>}
4711 4ddf3ba0c749 mod_http_errors: Module to handle HTTP errors with a HTML page Matthew Wild <mwild1@gmail.com> parents: diff changeset	54	</body>
7495 9a749cf8c1ba mod_http_errors: Add a newline after end of HTML Kim Alvefur <zash@zash.se> parents: 5776 diff changeset	55	</html>
9a749cf8c1ba mod_http_errors: Add a newline after end of HTML Kim Alvefur <zash@zash.se> parents: 5776 diff changeset	56	]];
4711 4ddf3ba0c749 mod_http_errors: Module to handle HTTP errors with a HTML page Matthew Wild <mwild1@gmail.com> parents: diff changeset	57
4ddf3ba0c749 mod_http_errors: Module to handle HTTP errors with a HTML page Matthew Wild <mwild1@gmail.com> parents: diff changeset	58	local function get_page(code, extra)
4ddf3ba0c749 mod_http_errors: Module to handle HTTP errors with a HTML page Matthew Wild <mwild1@gmail.com> parents: diff changeset	59	local message = messages[code];
4737 7b9e2a8c4710 mod_http_errors: Add two new config options, http_errors_always_show (show even for unknown errors) and http_errors_default_message (message for unknown errors) Matthew Wild <mwild1@gmail.com> parents: 4711 diff changeset	60	if always_serve or message then
7b9e2a8c4710 mod_http_errors: Add two new config options, http_errors_always_show (show even for unknown errors) and http_errors_default_message (message for unknown errors) Matthew Wild <mwild1@gmail.com> parents: 4711 diff changeset	61	message = message or default_message;
8367 f91ab40a3105 mod_http_errors: Use util.interpolation to render HTML template Kim Alvefur <zash@zash.se> parents: 8366 diff changeset	62	return render(html, {
4711 4ddf3ba0c749 mod_http_errors: Module to handle HTTP errors with a HTML page Matthew Wild <mwild1@gmail.com> parents: diff changeset	63	title = rawget(codes, code) or ("Code "..tostring(code));
4ddf3ba0c749 mod_http_errors: Module to handle HTTP errors with a HTML page Matthew Wild <mwild1@gmail.com> parents: diff changeset	64	message = message[1]:gsub("%%", function ()
4ddf3ba0c749 mod_http_errors: Module to handle HTTP errors with a HTML page Matthew Wild <mwild1@gmail.com> parents: diff changeset	65	return message[math.random(2, math.max(#message,2))];
4ddf3ba0c749 mod_http_errors: Module to handle HTTP errors with a HTML page Matthew Wild <mwild1@gmail.com> parents: diff changeset	66	end);
8367 f91ab40a3105 mod_http_errors: Use util.interpolation to render HTML template Kim Alvefur <zash@zash.se> parents: 8366 diff changeset	67	extra = extra;
f91ab40a3105 mod_http_errors: Use util.interpolation to render HTML template Kim Alvefur <zash@zash.se> parents: 8366 diff changeset	68	});
4711 4ddf3ba0c749 mod_http_errors: Module to handle HTTP errors with a HTML page Matthew Wild <mwild1@gmail.com> parents: diff changeset	69	end
4ddf3ba0c749 mod_http_errors: Module to handle HTTP errors with a HTML page Matthew Wild <mwild1@gmail.com> parents: diff changeset	70	end
4ddf3ba0c749 mod_http_errors: Module to handle HTTP errors with a HTML page Matthew Wild <mwild1@gmail.com> parents: diff changeset	71
11408 f7704f987439 mod_http_errors: Add some comments Kim Alvefur <zash@zash.se> parents: 11407 diff changeset	72	-- Main error page handler
4711 4ddf3ba0c749 mod_http_errors: Module to handle HTTP errors with a HTML page Matthew Wild <mwild1@gmail.com> parents: diff changeset	73	module:hook_object_event(server, "http-error", function (event)
8366 e2460edc2a2f mod_http_errors: Set Content-Type header to HTML (fixes #1030) Kim Alvefur <zash@zash.se> parents: 7495 diff changeset	74	if event.response then
e2460edc2a2f mod_http_errors: Set Content-Type header to HTML (fixes #1030) Kim Alvefur <zash@zash.se> parents: 7495 diff changeset	75	event.response.headers.content_type = "text/html; charset=utf-8";
e2460edc2a2f mod_http_errors: Set Content-Type header to HTML (fixes #1030) Kim Alvefur <zash@zash.se> parents: 7495 diff changeset	76	end
10578 f70c874b7936 mod_http_errors: Use text from util.errror object if included Kim Alvefur <zash@zash.se> parents: 10434 diff changeset	77	return get_page(event.code, (show_private and event.private_message) or event.message or (event.error and event.error.text));
4711 4ddf3ba0c749 mod_http_errors: Module to handle HTTP errors with a HTML page Matthew Wild <mwild1@gmail.com> parents: diff changeset	78	end);
10434 46dd9df2db0c mod_http_errors: Show a friendly page instead of 404 on top level Kim Alvefur <zash@zash.se> parents: 9764 diff changeset	79
11408 f7704f987439 mod_http_errors: Add some comments Kim Alvefur <zash@zash.se> parents: 11407 diff changeset	80	-- Way to use the template for other things so to give a consistent appearance
11393 29e7ed75ed3f mod_http_errors: Add way to reuse the error page template Kim Alvefur <zash@zash.se> parents: 11392 diff changeset	81	module:hook("http-message", function (event)
29e7ed75ed3f mod_http_errors: Add way to reuse the error page template Kim Alvefur <zash@zash.se> parents: 11392 diff changeset	82	if event.response then
29e7ed75ed3f mod_http_errors: Add way to reuse the error page template Kim Alvefur <zash@zash.se> parents: 11392 diff changeset	83	event.response.headers.content_type = "text/html; charset=utf-8";
29e7ed75ed3f mod_http_errors: Add way to reuse the error page template Kim Alvefur <zash@zash.se> parents: 11392 diff changeset	84	end
29e7ed75ed3f mod_http_errors: Add way to reuse the error page template Kim Alvefur <zash@zash.se> parents: 11392 diff changeset	85	return render(html, event);
11824 0375ef78ed64 mod_http_errors: Make it easier to override 'http-message' handler Kim Alvefur <zash@zash.se> parents: 11668 diff changeset	86	end, -1);
11393 29e7ed75ed3f mod_http_errors: Add way to reuse the error page template Kim Alvefur <zash@zash.se> parents: 11392 diff changeset	87
11667 04fa947784bc mod_http_errors: Add a Prosody logo to root page Kim Alvefur <zash@zash.se> parents: 11666 diff changeset	88	local icon = [[
04fa947784bc mod_http_errors: Add a Prosody logo to root page Kim Alvefur <zash@zash.se> parents: 11666 diff changeset	89	<svg xmlns="http://www.w3.org/2000/svg" height="0.7em" viewBox="0 0 480 480" width="0.7em">
04fa947784bc mod_http_errors: Add a Prosody logo to root page Kim Alvefur <zash@zash.se> parents: 11666 diff changeset	90	<rect fill="#6197df" height="220" rx="60" ry="60" width="220" x="10" y="10"></rect>
04fa947784bc mod_http_errors: Add a Prosody logo to root page Kim Alvefur <zash@zash.se> parents: 11666 diff changeset	91	<rect fill="#f29b00" height="220" rx="60" ry="60" width="220" x="10" y="240"></rect>
04fa947784bc mod_http_errors: Add a Prosody logo to root page Kim Alvefur <zash@zash.se> parents: 11666 diff changeset	92	<rect fill="#f29b00" height="220" rx="60" ry="60" width="220" x="240" y="10"></rect>
04fa947784bc mod_http_errors: Add a Prosody logo to root page Kim Alvefur <zash@zash.se> parents: 11666 diff changeset	93	<rect fill="#6197df" height="220" rx="60" ry="60" width="220" x="240" y="240"></rect>
04fa947784bc mod_http_errors: Add a Prosody logo to root page Kim Alvefur <zash@zash.se> parents: 11666 diff changeset	94	</svg>
04fa947784bc mod_http_errors: Add a Prosody logo to root page Kim Alvefur <zash@zash.se> parents: 11666 diff changeset	95	]];
04fa947784bc mod_http_errors: Add a Prosody logo to root page Kim Alvefur <zash@zash.se> parents: 11666 diff changeset	96
11408 f7704f987439 mod_http_errors: Add some comments Kim Alvefur <zash@zash.se> parents: 11407 diff changeset	97	-- Something nicer shown instead of 404 at the root path, if nothing else handles this path
10434 46dd9df2db0c mod_http_errors: Show a friendly page instead of 404 on top level Kim Alvefur <zash@zash.se> parents: 9764 diff changeset	98	module:hook_object_event(server, "http-error", function (event)
46dd9df2db0c mod_http_errors: Show a friendly page instead of 404 on top level Kim Alvefur <zash@zash.se> parents: 9764 diff changeset	99	local request, response = event.request, event.response;
46dd9df2db0c mod_http_errors: Show a friendly page instead of 404 on top level Kim Alvefur <zash@zash.se> parents: 9764 diff changeset	100	if request and response and request.path == "/" and response.status_code == 404 then
11668 d83f8f44caea mod_http_errors: Set status code 200 from root page Kim Alvefur <zash@zash.se> parents: 11667 diff changeset	101	response.status_code = 200;
10434 46dd9df2db0c mod_http_errors: Show a friendly page instead of 404 on top level Kim Alvefur <zash@zash.se> parents: 9764 diff changeset	102	response.headers.content_type = "text/html; charset=utf-8";
11407 747e8245f180 mod_http_errors: Add some silly variations for the '/' page Kim Alvefur <zash@zash.se> parents: 11399 diff changeset	103	local message = messages["/"];
10434 46dd9df2db0c mod_http_errors: Show a friendly page instead of 404 on top level Kim Alvefur <zash@zash.se> parents: 9764 diff changeset	104	return render(html, {
11667 04fa947784bc mod_http_errors: Add a Prosody logo to root page Kim Alvefur <zash@zash.se> parents: 11666 diff changeset	105	icon_raw = icon,
10434 46dd9df2db0c mod_http_errors: Show a friendly page instead of 404 on top level Kim Alvefur <zash@zash.se> parents: 9764 diff changeset	106	title = "Prosody is running!";
11407 747e8245f180 mod_http_errors: Add some silly variations for the '/' page Kim Alvefur <zash@zash.se> parents: 11399 diff changeset	107	message = message[math.random(#message)];
10434 46dd9df2db0c mod_http_errors: Show a friendly page instead of 404 on top level Kim Alvefur <zash@zash.se> parents: 9764 diff changeset	108	});
46dd9df2db0c mod_http_errors: Show a friendly page instead of 404 on top level Kim Alvefur <zash@zash.se> parents: 9764 diff changeset	109	end
46dd9df2db0c mod_http_errors: Show a friendly page instead of 404 on top level Kim Alvefur <zash@zash.se> parents: 9764 diff changeset	110	end, 1);
46dd9df2db0c mod_http_errors: Show a friendly page instead of 404 on top level Kim Alvefur <zash@zash.se> parents: 9764 diff changeset	111

author	Kim Alvefur <zash@zash.se>
	Wed, 27 Mar 2024 19:33:11 +0100
changeset 13471	c2a476f4712a
parent 13397	f72ca74de456
permissions	-rw-r--r--