prosody
82705ec87253
plugins/mod_http_errors.lua

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plugins/mod_http_errors.lua @ 10390:82705ec87253 0.11

util.startup: Ensure prosody.paths are absolute (see #1430) Normally these paths are injected into the installed 'prosody' executable as absolute paths, but it is possible to override at least the config path via environment variable or command line argument. This makes sure a path relative to pwd stays relative to that instead of the data directory.
author Kim Alvefur <zash@zash.se>
date Mon, 04 Nov 2019 00:29:49 +0100
parent 8364:f91ab40a3105
child 9760:88640b3ea6b8
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1 module:set_global();
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2
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3 local server = require "net.http.server";
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4 local codes = require "net.http.codes";
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5 local xml_escape = require "util.stanza".xml_escape;
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6 local render = require "util.interpolation".new("%b{}", xml_escape);
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7
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8 local show_private = module:get_option_boolean("http_errors_detailed", false);
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9 local always_serve = module:get_option_boolean("http_errors_always_show", true);
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10 local default_message = { module:get_option_string("http_errors_default_message", "That's all I know.") };
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11 local default_messages = {
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12 [400] = { "What kind of request do you call that??" };
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13 [403] = { "You're not allowed to do that." };
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14 [404] = { "Whatever you were looking for is not here. %";
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15 "Where did you put it?", "It's behind you.", "Keep looking." };
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16 [500] = { "% Check your error log for more info.";
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17 "Gremlins.", "It broke.", "Don't look at me." };
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18 };
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19
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20 local messages = setmetatable(module:get_option("http_errors_messages", {}), { __index = default_messages });
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21
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22 local html = [[
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23 <!DOCTYPE html>
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24 <html>
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25 <head>
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26 <meta charset="utf-8">
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27 <title>{title}</title>
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28 <style>
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29 body{
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30 margin-top:14%;
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31 text-align:center;
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32 background-color:#F8F8F8;
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33 font-family:sans-serif;
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34 }
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35 h1{
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36 font-size:xx-large;
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37 }
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38 p{
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39 font-size:x-large;
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40 }
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41 p+p {
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42 font-size:large;
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43 font-family:courier;
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44 }
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45 </style>
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46 </head>
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47 <body>
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48 <h1>{title}</h1>
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49 <p>{message}</p>
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50 <p>{extra?}</p>
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51 </body>
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52 </html>
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53 ]];
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54
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55 local function get_page(code, extra)
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56 local message = messages[code];
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57 if always_serve or message then
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58 message = message or default_message;
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59 return render(html, {
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60 title = rawget(codes, code) or ("Code "..tostring(code));
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61 message = message[1]:gsub("%%", function ()
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62 return message[math.random(2, math.max(#message,2))];
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63 end);
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64 extra = extra;
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65 });
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66 end
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67 end
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68
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69 module:hook_object_event(server, "http-error", function (event)
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70 if event.response then
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71 event.response.headers.content_type = "text/html; charset=utf-8";
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72 end
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73 return get_page(event.code, (show_private and event.private_message) or event.message);
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74 end);