prosody
b892f5489d79
plugins/mod_http_errors.lua

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plugins/mod_http_errors.lua @ 12074:b892f5489d79

mod_smacks: Check if session was really sleeping before logging message It could have been resumed without going into hibernation first, i.e. when the client notices the disconnect before the server, or if it switches networks etc.
author Kim Alvefur <zash@zash.se>
date Sat, 18 Dec 2021 15:45:06 +0100
parent 11820:0375ef78ed64
child 12977:74b9e05af71e
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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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 "A study in simplicity.";
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20 "Better catch it!";
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21 "Don't just stand there, go after it!";
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22 "Well, say something, before it runs too far!";
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23 "Welcome to the world of XMPP!";
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24 "You can do anything in XMPP!"; -- "The only limit is XML.";
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25 "You can do anything with Prosody!"; -- the only limit is memory?
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26 };
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27 };
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28
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29 local messages = setmetatable(module:get_option("http_errors_messages", {}), { __index = default_messages });
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30
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31 local html = [[
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32 <!DOCTYPE html>
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33 <html>
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34 <head>
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35 <meta charset="utf-8">
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36 <title>{title}</title>
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37 <style>
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38 body{margin-top:14%;text-align:center;background-color:#f8f8f8;font-family:sans-serif}
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39 h1{font-size:xx-large}
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40 p{font-size:x-large}
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41 p.warning>span{font-size:large;background-color:yellow}
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42 p.extra{font-size:large;font-family:courier}
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43 @media(prefers-color-scheme:dark){
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44 body{background-color:#161616;color:#eee}
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45 p.warning>span{background-color:inherit;color:yellow}
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46 }
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47 </style>
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48 </head>
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49 <body>
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50 <h1>{icon?{icon_raw!?}} {title}</h1>
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51 <p>{message}</p>
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52 {warning&<p class="warning"><span>&#9888; {warning?} &#9888;</span></p>}
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53 {extra&<p class="extra">{extra?}</p>}
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54 </body>
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55 </html>
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56 ]];
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57
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58 local function get_page(code, extra)
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59 local message = messages[code];
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60 if always_serve or message then
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61 message = message or default_message;
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62 return render(html, {
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63 title = rawget(codes, code) or ("Code "..tostring(code));
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64 message = message[1]:gsub("%%", function ()
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65 return message[math.random(2, math.max(#message,2))];
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66 end);
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67 extra = extra;
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68 });
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69 end
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70 end
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71
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72 -- Main error page handler
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73 module:hook_object_event(server, "http-error", function (event)
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74 if event.response then
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75 event.response.headers.content_type = "text/html; charset=utf-8";
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76 end
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77 return get_page(event.code, (show_private and event.private_message) or event.message or (event.error and event.error.text));
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78 end);
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79
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80 -- Way to use the template for other things so to give a consistent appearance
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81 module:hook("http-message", function (event)
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82 if event.response then
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83 event.response.headers.content_type = "text/html; charset=utf-8";
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84 end
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85 return render(html, event);
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86 end, -1);
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87
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88 local icon = [[
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89 <svg xmlns="http://www.w3.org/2000/svg" height="0.7em" viewBox="0 0 480 480" width="0.7em">
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90 <rect fill="#6197df" height="220" rx="60" ry="60" width="220" x="10" y="10"></rect>
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91 <rect fill="#f29b00" height="220" rx="60" ry="60" width="220" x="10" y="240"></rect>
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92 <rect fill="#f29b00" height="220" rx="60" ry="60" width="220" x="240" y="10"></rect>
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93 <rect fill="#6197df" height="220" rx="60" ry="60" width="220" x="240" y="240"></rect>
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94 </svg>
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95 ]];
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96
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97 -- Something nicer shown instead of 404 at the root path, if nothing else handles this path
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98 module:hook_object_event(server, "http-error", function (event)
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99 local request, response = event.request, event.response;
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100 if request and response and request.path == "/" and response.status_code == 404 then
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101 response.status_code = 200;
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102 response.headers.content_type = "text/html; charset=utf-8";
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103 local message = messages["/"];
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104 return render(html, {
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105 icon_raw = icon,
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106 title = "Prosody is running!";
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107 message = message[math.random(#message)];
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108 });
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109 end
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110 end, 1);
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111