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mod_invites_page/mod_invites_page.lua

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mod_invites_page/mod_invites_page.lua @ 6245:ea58d2893afb draft default tip

Merge update
author Trần H. Trung <xmpp:trần.h.trung@trung.fun>
date Tue, 29 Apr 2025 23:27:06 +0700
parent 6232:d72010642b31
parent 6234:d68e640e76ad
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1 local st = require "util.stanza";
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2 local url_escape = require "util.http".urlencode;
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3 local http_formdecode = require "net.http".formdecode;
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4
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5 local base_url = "https://"..module.host.."/";
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6
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7 local render_html_template = require"util.interpolation".new("%b{}", st.xml_escape, {
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8 urlescape = url_escape;
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9 lower = string.lower;
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10 classname = function (s) return (s:gsub("%W+", "-")); end;
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11 relurl = function (s)
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12 if s:match("^%w+://") then
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13 return s;
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14 end
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15 return base_url.."/"..s;
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16 end;
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17 });
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18 local render_url = require "util.interpolation".new("%b{}", url_escape, {
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19 urlescape = url_escape;
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20 noscheme = function (url)
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21 return (url:gsub("^[^:]+:", ""));
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22 end;
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23 });
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24
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25 local site_name = module:get_option_string("site_name", module.host);
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26 local site_apps;
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27
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28 -- Enable/disable built-in invite pages
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29 local external_only = module:get_option_boolean("invites_page_external", false);
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30
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31 local http_files;
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32
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33 if not external_only then
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34 -- Load HTTP-serving dependencies
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35 if prosody.shutdown then -- not if running under prosodyctl
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36 module:depends("http");
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37 http_files = require "net.http.files";
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38 elseif prosody.process_type and module.get_option_period then
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39 module:depends("http");
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40 http_files = require "net.http.files";
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41 end
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42 -- Calculate automatic base_url default
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43 base_url = module.http_url and module:http_url();
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44
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45 -- Load site apps info
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46 module:depends("register_apps");
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47 site_apps = module:shared("register_apps/apps");
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48 end
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49
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50 local invites = module:depends("invites");
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51
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52 -- Point at eg https://github.com/ge0rg/easy-xmpp-invitation
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53 -- This URL must always be absolute, as it is shared standalone
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54 local invite_url_template = module:get_option_string("invites_page", base_url and (base_url.."?{invite.token}") or nil);
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55 -- This URL is relative to the invite page, or can be absolute
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56 local register_url_template = module:get_option_string("invites_registration_page", "register?t={invite.token}&c={app.id}");
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57
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58 local function add_landing_url(invite)
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59 if not invite_url_template then return; end
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60 -- TODO: we don't currently have a landing page for subscription-only invites,
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61 -- so the user will only receive a URI. The client should be able to handle this
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62 -- by automatically falling back to a client-specific landing page, per XEP-0401.
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63 if not invite.allow_registration then return; end
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64 -- password reset invites are not currently supported
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65 if invite.additional_data and invite.additional_data.allow_reset then return end
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66 invite.landing_page = render_url(invite_url_template, { host = module.host, invite = invite });
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67 end
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68
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69 module:hook("invite-created", add_landing_url);
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70
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71 if external_only then
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72 return;
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73 end
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74
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75 local function render_app_urls(apps, invite_vars)
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76 local rendered_apps = {};
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77 for _, unrendered_app in ipairs(apps) do
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78 local app = setmetatable({}, { __index = unrendered_app });
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79 local template_vars = { app = app, invite = invite_vars, base_url = base_url };
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80 if app.magic_link_format then
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81 -- Magic link generally links directly to third-party
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82 app.proceed_url = render_url(app.magic_link_format or app.link or "#", template_vars);
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83 elseif app.supports_preauth_uri then
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84 -- Proceed to a page that guides the user to download, and then
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85 -- click the URI button
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86 app.proceed_url = render_url("{base_url!}/setup/{app.id}?{invite.token}", template_vars);
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87 else
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88 -- Manual means proceed to web registration, but include app id
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89 -- so it can show post-registration instructions
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90 app.proceed_url = render_url(register_url_template, template_vars);
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91 end
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92 table.insert(rendered_apps, app);
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93 end
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94 return rendered_apps;
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95 end
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96
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97 local templatePath = module:get_option_string("invites_template_html", "html");
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98 local function template_get(filename, lang)
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99 local template = lang and templatePath.."/"..filename.."."..lang..".html"
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100 or templatePath.."/"..filename..".html";
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101 return assert(module:load_resource(template):read("*a"));
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102 end
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103
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104 function serve_invite_page(event)
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105 local query_params = event.request.url.query and http_formdecode(event.request.url.query);
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106 local lang = query_params and query_params.l;
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107
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108 local invite_page_template = template_get("invite", lang);
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109 local invalid_invite_page_template = template_get("invite_invalid", lang);
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110
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111 event.response.headers["Content-Type"] = "text/html; charset=utf-8";
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112
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113 local invite = invites.get(event.request.url.query.t);
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114 if not invite then
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115 return render_html_template(invalid_invite_page_template, {
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116 site_name = site_name;
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117 static = base_url.."/static";
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118 });
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119 end
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120
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121 local template_vars = {
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122 site_name = site_name;
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123 token = invite.token;
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124 uri = invite.uri;
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125 type = invite.type;
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126 jid = invite.jid;
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127 inviter = invite.inviter;
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128 static = base_url.."/static";
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129 };
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130 template_vars.apps = render_app_urls(site_apps, template_vars);
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131
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132 local invite_page = render_html_template(invite_page_template, template_vars);
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133
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134 event.response.headers["Link"] = ([[<%s>; rel="alternate"]]):format(template_vars.uri);
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135 return invite_page;
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136 end
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137
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138 function serve_setup_page(event, app_id)
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139 local query_params = event.request.url.query and http_formdecode(event.request.url.query);
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140 local lang = query_params and query_params.l;
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141
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142 local invite_page_template = template_get("client", lang);
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143 local invalid_invite_page_template = template_get("invite_invalid", lang);
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144
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145 event.response.headers["Content-Type"] = "text/html; charset=utf-8";
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146
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147 local invite = invites.get(event.request.url.query.t);
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148 if not invite then
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149 return render_html_template(invalid_invite_page_template, {
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150 site_name = site_name;
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151 static = base_url.."/static";
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152 });
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153 end
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154
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155 local template_vars = {
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156 site_name = site_name;
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157 apps = site_apps;
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158 token = invite.token;
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159 uri = invite.uri;
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160 type = invite.type;
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161 jid = invite.jid;
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162 static = base_url.."/static";
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163 };
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164 template_vars.app = render_app_urls({ site_apps[app_id] }, template_vars)[1];
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165
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166 local invite_page = render_html_template(invite_page_template, template_vars);
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167 return invite_page;
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168 end
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169
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170 local mime_map = {
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171 png = "image/png";
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172 svg = "image/svg+xml";
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173 js = "application/javascript";
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174 };
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175
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176 module:provides("http", {
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177 route = {
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178 ["GET"] = serve_invite_page;
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179 ["GET /setup/*"] = serve_setup_page;
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180 ["GET /static/*"] = http_files and http_files.serve({ path = module:get_directory().."/static", mime_map = mime_map });
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181 };
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182 });