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annotate mod_invites_page/mod_invites_page.lua @ 5853:97c9b76867ca

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mod_log_ringbuffer: Detach event handlers on logging reload (thanks Menel) Otherwise the global event handlers accumulate, one added each time logging is reoladed, and each invocation of the signal or event triggers one dump of each created ringbuffer.
author Kim Alvefur <zash@zash.se>
date Sun, 03 Mar 2024 11:23:40 +0100
parents efdaffc878a9
children
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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
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4 local base_url = "https://"..module.host.."/";
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5
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6 local render_html_template = require"util.interpolation".new("%b{}", st.xml_escape, {
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7 urlescape = url_escape;
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8 lower = string.lower;
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9 classname = function (s) return (s:gsub("%W+", "-")); end;
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10 relurl = function (s)
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11 if s:match("^%w+://") then
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12 return s;
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13 end
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14 return base_url.."/"..s;
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15 end;
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16 });
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17 local render_url = require "util.interpolation".new("%b{}", url_escape, {
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18 urlescape = url_escape;
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19 noscheme = function (url)
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20 return (url:gsub("^[^:]+:", ""));
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21 end;
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22 });
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23
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24 local site_name = module:get_option_string("site_name", module.host);
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25 local site_apps;
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26
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27 -- Enable/disable built-in invite pages
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28 local external_only = module:get_option_boolean("invites_page_external", false);
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29
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30 local http_files;
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32 if not external_only then
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33 -- Load HTTP-serving dependencies
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34 if prosody.shutdown then -- not if running under prosodyctl
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35 module:depends("http");
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36
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37 if prosody.process_type == "prosody" then
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38 http_files = require "net.http.files";
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39 else
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40 http_files = module:depends"http_files";
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41 end
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42 elseif prosody.process_type and module.get_option_period then
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43 module:depends("http");
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44 http_files = require "net.http.files";
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45 end
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46 -- Calculate automatic base_url default
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47 base_url = module.http_url and module:http_url();
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48
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49 -- Load site apps info
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50 module:depends("register_apps");
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51 site_apps = module:shared("register_apps/apps");
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52 end
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53
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54 local invites = module:depends("invites");
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55
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56 -- Point at eg https://github.com/ge0rg/easy-xmpp-invitation
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57 -- This URL must always be absolute, as it is shared standalone
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58 local invite_url_template = module:get_option_string("invites_page", base_url and (base_url.."?{invite.token}") or nil);
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59 -- This URL is relative to the invite page, or can be absolute
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60 local register_url_template = module:get_option_string("invites_registration_page", "register?t={invite.token}&c={app.id}");
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61
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62 local function add_landing_url(invite)
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63 if not invite_url_template then return; end
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64 -- TODO: we don't currently have a landing page for subscription-only invites,
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65 -- so the user will only receive a URI. The client should be able to handle this
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66 -- by automatically falling back to a client-specific landing page, per XEP-0401.
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67 if not invite.allow_registration then return; end
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68 invite.landing_page = render_url(invite_url_template, { host = module.host, invite = invite });
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69 end
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70
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71 module:hook("invite-created", add_landing_url);
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72
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73 if external_only then
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74 return;
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75 end
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76
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77 local function render_app_urls(apps, invite_vars)
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78 local rendered_apps = {};
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79 for _, unrendered_app in ipairs(apps) do
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80 local app = setmetatable({}, { __index = unrendered_app });
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81 local template_vars = { app = app, invite = invite_vars, base_url = base_url };
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82 if app.magic_link_format then
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83 -- Magic link generally links directly to third-party
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84 app.proceed_url = render_url(app.magic_link_format or app.link or "#", template_vars);
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85 elseif app.supports_preauth_uri then
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86 -- Proceed to a page that guides the user to download, and then
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87 -- click the URI button
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88 app.proceed_url = render_url("{base_url!}/setup/{app.id}?{invite.token}", template_vars);
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89 else
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90 -- Manual means proceed to web registration, but include app id
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91 -- so it can show post-registration instructions
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92 app.proceed_url = render_url(register_url_template, template_vars);
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93 end
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94 table.insert(rendered_apps, app);
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95 end
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96 return rendered_apps;
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97 end
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98
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99 function serve_invite_page(event)
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100 local invite_page_template = assert(module:load_resource("html/invite.html")):read("*a");
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101 local invalid_invite_page_template = assert(module:load_resource("html/invite_invalid.html")):read("*a");
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102
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103 event.response.headers["Content-Type"] = "text/html; charset=utf-8";
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104
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105 local invite = invites.get(event.request.url.query);
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106 if not invite then
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107 return render_html_template(invalid_invite_page_template, {
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108 site_name = site_name;
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109 static = base_url.."/static";
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110 });
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111 end
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112
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113 local template_vars = {
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114 site_name = site_name;
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115 token = invite.token;
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116 uri = invite.uri;
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117 type = invite.type;
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118 jid = invite.jid;
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119 inviter = invite.inviter;
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120 static = base_url.."/static";
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121 };
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122 template_vars.apps = render_app_urls(site_apps, template_vars);
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123
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124 local invite_page = render_html_template(invite_page_template, template_vars);
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125
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126 event.response.headers["Link"] = ([[<%s>; rel="alternate"]]):format(template_vars.uri);
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127 return invite_page;
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128 end
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129
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130 function serve_setup_page(event, app_id)
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131 local invite_page_template = assert(module:load_resource("html/client.html")):read("*a");
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132 local invalid_invite_page_template = assert(module:load_resource("html/invite_invalid.html")):read("*a");
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133
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134 event.response.headers["Content-Type"] = "text/html; charset=utf-8";
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135
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136 local invite = invites.get(event.request.url.query);
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137 if not invite then
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138 return render_html_template(invalid_invite_page_template, {
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139 site_name = site_name;
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140 static = base_url.."/static";
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141 });
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142 end
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143
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144 local template_vars = {
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145 site_name = site_name;
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146 apps = site_apps;
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147 token = invite.token;
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148 uri = invite.uri;
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149 type = invite.type;
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150 jid = invite.jid;
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151 static = base_url.."/static";
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152 };
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153 template_vars.app = render_app_urls({ site_apps[app_id] }, template_vars)[1];
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154
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155 local invite_page = render_html_template(invite_page_template, template_vars);
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156 return invite_page;
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157 end
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158
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159 local mime_map = {
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160 png = "image/png";
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161 svg = "image/svg+xml";
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162 js = "application/javascript";
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163 };
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164
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165 module:provides("http", {
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166 route = {
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167 ["GET"] = serve_invite_page;
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168 ["GET /setup/*"] = serve_setup_page;
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169 ["GET /static/*"] = http_files and http_files.serve({ path = module:get_directory().."/static", mime_map = mime_map });
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170 };
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171 });