prosody
f91ab40a3105
plugins/mod_http_errors.lua

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plugins/mod_http_errors.lua @ 8364:f91ab40a3105

mod_http_errors: Use util.interpolation to render HTML template
author Kim Alvefur <zash@zash.se>
date Fri, 27 Oct 2017 13:27:35 +0200
parent 8363:e2460edc2a2f
child 9760:88640b3ea6b8
comparison
equal deleted inserted replaced
8363:e2460edc2a2f 8364:f91ab40a3105
1 module:set_global(); 1 module:set_global();
2 2
3 local server = require "net.http.server"; 3 local server = require "net.http.server";
4 local codes = require "net.http.codes"; 4 local codes = require "net.http.codes";
5 local xml_escape = require "util.stanza".xml_escape;
6 local render = require "util.interpolation".new("%b{}", xml_escape);
5 7
6 local show_private = module:get_option_boolean("http_errors_detailed", false); 8 local show_private = module:get_option_boolean("http_errors_detailed", false);
7 local always_serve = module:get_option_boolean("http_errors_always_show", true); 9 local always_serve = module:get_option_boolean("http_errors_always_show", true);
8 local default_message = { module:get_option_string("http_errors_default_message", "That's all I know.") }; 10 local default_message = { module:get_option_string("http_errors_default_message", "That's all I know.") };
9 local default_messages = { 11 local default_messages = {
19 21
20 local html = [[ 22 local html = [[
21 <!DOCTYPE html> 23 <!DOCTYPE html>
22 <html> 24 <html>
23 <head> 25 <head>
24 <meta charset="utf-8"> 26 <meta charset="utf-8">
25 <style> 27 <title>{title}</title>
26 body{ 28 <style>
27 margin-top:14%; 29 body{
28 text-align:center; 30 margin-top:14%;
29 background-color:#F8F8F8; 31 text-align:center;
30 font-family:sans-serif; 32 background-color:#F8F8F8;
31 } 33 font-family:sans-serif;
32 h1{ 34 }
33 font-size:xx-large; 35 h1{
34 } 36 font-size:xx-large;
35 p{ 37 }
36 font-size:x-large; 38 p{
37 } 39 font-size:x-large;
38 p+p { font-size: large; font-family: courier } 40 }
39 </style> 41 p+p {
42 font-size:large;
43 font-family:courier;
44 }
45 </style>
40 </head> 46 </head>
41 <body> 47 <body>
42 <h1>$title</h1> 48 <h1>{title}</h1>
43 <p>$message</p> 49 <p>{message}</p>
44 <p>$extra</p> 50 <p>{extra?}</p>
45 </body> 51 </body>
46 </html> 52 </html>
47 ]]; 53 ]];
48 html = html:gsub("%s%s+", "");
49
50 local entities = {
51 ["<"] = "&lt;", [">"] = "&gt;", ["&"] = "&amp;",
52 ["'"] = "&apos;", ["\""] = "&quot;", ["\n"] = "<br/>",
53 };
54
55 local function tohtml(plain)
56 return (plain:gsub("[<>&'\"\n]", entities));
57
58 end
59 54
60 local function get_page(code, extra) 55 local function get_page(code, extra)
61 local message = messages[code]; 56 local message = messages[code];
62 if always_serve or message then 57 if always_serve or message then
63 message = message or default_message; 58 message = message or default_message;
64 return (html:gsub("$(%a+)", { 59 return render(html, {
65 title = rawget(codes, code) or ("Code "..tostring(code)); 60 title = rawget(codes, code) or ("Code "..tostring(code));
66 message = message[1]:gsub("%%", function () 61 message = message[1]:gsub("%%", function ()
67 return message[math.random(2, math.max(#message,2))]; 62 return message[math.random(2, math.max(#message,2))];
68 end); 63 end);
69 extra = tohtml(extra or ""); 64 extra = extra;
70 })); 65 });
71 end 66 end
72 end 67 end
73 68
74 module:hook_object_event(server, "http-error", function (event) 69 module:hook_object_event(server, "http-error", function (event)
75 if event.response then 70 if event.response then