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annotate mod_conversejs/mod_conversejs.lua @ 3656:3e0f4d727825

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mod_vcard_muc: Add an alternative method of signaling avatar change When the avatar has been changed, a signal is sent that the room configuration has changed. Clients then do a disco#info query to find the SHA-1 of the new avatar. They can then fetch it as before, or not if they have it cached already. This is meant to be less disruptive than signaling via presence, which caused problems for some clients. If clients transition to the new method, the old one can eventually be removed. The namespace is made up while waiting for standardization. Otherwise it is very close to what's described in https://xmpp.org/extensions/inbox/muc-avatars.html
author Kim Alvefur <zash@zash.se>
date Sun, 25 Aug 2019 20:46:43 +0200
parents 58b49d883f0c
children 49e65a7e9415
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1 -- mod_conversejs
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2 -- Copyright (C) 2017 Kim Alvefur
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3
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4 local json_encode = require"util.json".encode;
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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, { json = json_encode });
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7
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8 module:depends"http";
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9
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10 local has_bosh = pcall(function ()
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11 module:depends"bosh";
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12 end);
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13
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14 local has_ws = pcall(function ()
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15 module:depends("websocket");
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16 end);
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17
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18 pcall(function ()
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19 module:depends("bookmarks");
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20 end);
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21
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22 local cdn_url = module:get_option_string("conversejs_cdn", "https://cdn.conversejs.org");
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23
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24 local version = module:get_option_string("conversejs_version", "");
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25 if version ~= "" then version = "/" .. version end
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26 local js_url = module:get_option_string("conversejs_script", cdn_url..version.."/dist/converse.min.js");
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27 local css_url = module:get_option_string("conversejs_css", cdn_url..version.."/dist/converse.min.css");
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29 local html_template;
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31 do
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32 local template_filename = module:get_option_string(module.name .. "_html_template", "template.html");
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33 local template_file, err = module:load_resource(template_filename);
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34 if template_file then
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35 html_template, err = template_file:read("*a");
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36 template_file:close();
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37 end
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38 if not html_template then
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39 module:log("error", "Error loading HTML template: %s", err);
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40 html_template = render("<h1>mod_{module} could not read the template</h1>\
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41 <p>Tried to open <b>{filename}</b></p>\
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42 <pre>{error}</pre>",
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43 { module = module.name, filename = template_filename, error = err });
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44 end
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45 end
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46
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47 local js_template;
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48 do
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49 local template_filename = module:get_option_string(module.name .. "_js_template", "template.js");
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50 local template_file, err = module:load_resource(template_filename);
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51 if template_file then
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52 js_template, err = template_file:read("*a");
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53 template_file:close();
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54 end
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55 if not js_template then
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56 module:log("error", "Error loading JS template: %s", err);
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57 js_template = render("console.log(\"mod_{module} could not read the JS template: %s\", {error|json})",
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58 { module = module.name, filename = template_filename, error = err });
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59 end
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60 end
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61
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62 local user_options = module:get_option("conversejs_options");
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63
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64 local function get_converse_options()
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65 local allow_registration = module:get_option_boolean("allow_registration", false);
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66 local converse_options = {
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67 bosh_service_url = has_bosh and module:http_url("bosh","/http-bind") or nil;
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68 websocket_url = has_ws and module:http_url("websocket","xmpp-websocket"):gsub("^http", "ws") or nil;
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69 authentication = module:get_option_string("authentication") == "anonymous" and "anonymous" or "login";
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70 jid = module.host;
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71 default_domain = module.host;
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72 domain_placeholder = module.host;
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73 allow_registration = allow_registration;
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74 registration_domain = allow_registration and module.host or nil;
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75 };
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76
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77 if type(user_options) == "table" then
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78 for k,v in pairs(user_options) do
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79 converse_options[k] = v;
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80 end
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81 end
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82
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83 return converse_options;
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84 end
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85
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86 local add_tags = module:get_option_array("conversejs_tags", {});
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87
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88 module:provides("http", {
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89 title = "Converse.js";
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90 route = {
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91 GET = function (event)
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92 local converse_options = get_converse_options();
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93
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94 event.response.headers.content_type = "text/html";
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95 return render(html_template, {
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96 service_name = module:get_option_string("name");
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97 header_scripts = { js_url };
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98 header_style = { css_url };
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99 header_tags = add_tags;
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100 conversejs = {
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101 options = converse_options;
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102 startup = { script = js_template:format(json_encode(converse_options)); }
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103 };
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104 });
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105 end;
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106
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107 ["GET /prosody-converse.js"] = function (event)
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108 local converse_options = get_converse_options();
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109
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110 event.response.headers.content_type = "application/javascript";
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111 return js_template:format(json_encode(converse_options));
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112 end;
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113 }
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114 });
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115