prosody-modules
e7b9bc629ecc
mod_invite/mod_invite.lua

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mod_invite/mod_invite.lua @ 4941:e7b9bc629ecc

mod_rest: Add special handling to catch MAM results from remote hosts Makes MAM queries to remote hosts works. As the comment says, MAM results from users' local archives or local MUCs are returned via origin.send() which is provided in the event and thus already worked. Results from remote hosts go via normal stanza routing and events, which need this extra handling to catch. This pattern of iq-set, message+, iq-result is generally limited to MAM. Closest similar thing might be MUC join, but to really handle that you would need the webhook callback mechanism.
author Kim Alvefur <zash@zash.se>
date Mon, 16 May 2022 19:47:09 +0200
parent 3779:5e69a4358053
child 4976:75b6e5df65f9
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1 local adhoc_new = module:require "adhoc".new;
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2 local uuid_new = require "util.uuid".generate;
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3 local jid_split = require "util.jid".split;
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4 local jid_join = require "util.jid".join;
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5 local http_formdecode = require "net.http".formdecode;
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6 local usermanager = require "core.usermanager";
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7 local rostermanager = require "core.rostermanager";
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8 local tohtml = require "util.stanza".xml_escape
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9 local nodeprep = require "util.encodings".stringprep.nodeprep;
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10 local tostring = tostring;
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12 local invite_storage = module:open_store();
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13 local inviter_storage = module:open_store("inviter");
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14
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15 local serve;
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16 if not pcall(function ()
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17 local http_files = require "net.http.files";
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18 serve = http_files.serve;
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19 end) then
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20 serve = module:depends"http_files".serve;
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21 end
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22
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23 module:depends"adhoc";
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24 module:depends"http";
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26 local function apply_template(template, args)
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27 return
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28 template:gsub("{{([^}]*)}}", function (k)
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29 if args[k] then
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30 return tohtml(args[k])
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31 else
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32 return k
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33 end
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34 end)
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35 end
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37 function generate_page(event, token)
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38 local response = event.response;
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40 local tokens = invite_storage:get() or {};
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42 response.headers.content_type = "text/html; charset=utf-8";
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43
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44 if not token or token == "" then
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45 local template = assert(module:load_resource("invite/invite_result.html")):read("*a");
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46
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47 -- TODO maybe show a friendlier information page instead?
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48 return apply_template(template, { classes = "alert-danger", message = "No token given" })
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49 elseif not tokens[token] then
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50 local template = assert(module:load_resource("invite/invite_result.html")):read("*a");
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52 return apply_template(template, { classes = "alert-danger", message = "This invite has expired." })
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53 end
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55 local template = assert(module:load_resource("invite/invite.html")):read("*a");
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57 return apply_template(template, { user = jid_join(tokens[token], module.host), server = module.host, token = token });
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58 end
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59
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60 function subscribe(user1, user2)
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61 local user1_jid = jid_join(user1, module.host);
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62 local user2_jid = jid_join(user2, module.host);
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63
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64 rostermanager.set_contact_pending_out(user2, module.host, user1_jid);
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65 rostermanager.set_contact_pending_in(user1, module.host, user2_jid);
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66 rostermanager.subscribed(user1, module.host, user2_jid);
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67 rostermanager.process_inbound_subscription_approval(user2, module.host, user1_jid);
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68 end
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69
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70 function handle_form(event)
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71 local request, response = event.request, event.response;
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72 local form_data = http_formdecode(request.body);
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73 local user, password, token = form_data["user"], form_data["password"], form_data["token"];
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74 local tokens = invite_storage:get() or {};
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76 local template = assert(module:load_resource("invite/invite_result.html")):read("*a");
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78 response.headers.content_type = "text/html; charset=utf-8";
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79
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80 if not user or #user == 0 or not password or #password == 0 or not token then
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81 return apply_template(template, { classes = "alert-warning", message = "Please fill in all fields." })
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82 end
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83
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84 if not tokens[token] then
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85 return apply_template(template, { classes = "alert-danger", message = "This invite has expired." })
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86 end
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87
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88 -- Shamelessly copied from mod_register_web.
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89 local prepped_username = nodeprep(user);
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90
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91 if not prepped_username or #prepped_username == 0 then
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92 return apply_template(template, { classes = "alert-warning", message = "This username contains invalid characters." })
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93 end
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95 if usermanager.user_exists(prepped_username, module.host) then
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96 return apply_template(template, { classes = "alert-warning", message = "This username is already in use." })
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97 end
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98
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99 local registering = { username = prepped_username , host = module.host, allowed = true }
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100
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101 module:fire_event("user-registering", registering);
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102
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103 if not registering.allowed then
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104 return apply_template(template, { classes = "alert-danger", message = "Registration is not allowed." })
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105 end
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106
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107 local ok, err = usermanager.create_user(prepped_username, password, module.host);
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108
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109 if ok then
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110 subscribe(prepped_username, tokens[token]);
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111 subscribe(tokens[token], prepped_username);
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112
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113 inviter_storage:set(prepped_username, { inviter = tokens[token] });
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114
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115 rostermanager.roster_push(tokens[token], module.host, jid_join(prepped_username, module.host));
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116
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117 tokens[token] = nil;
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118
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119 invite_storage:set(nil, tokens);
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120
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121 module:fire_event("user-registered", {
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122 username = prepped_username, host = module.host, source = "mod_invite", });
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123
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124 return apply_template(template, { classes = "alert-success",
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125 message = "Your account has been created! You can now log in using an XMPP client." })
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126 else
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127 module:log("debug", "Registration failed: " .. tostring(err));
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128
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129 return apply_template(template, { classes = "alert-danger", message = "An unknown error has occurred." })
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130 end
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131 end
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132
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133 module:provides("http", {
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134 route = {
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135 ["GET /bootstrap.min.css"] = serve(module:get_directory() .. "/invite/bootstrap.min.css");
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136 ["GET /*"] = generate_page;
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137 POST = handle_form;
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138 };
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139 });
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140
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141 function invite_command_handler(_, data)
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142 local uuid = uuid_new();
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143
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144 local user, host = jid_split(data.from);
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145
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146 if host ~= module.host then
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147 return { status = "completed", error = { message = "You are not allowed to invite users to this server." }};
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148 end
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149
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150 local tokens = invite_storage:get() or {};
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151
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152 tokens[uuid] = user;
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153
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154 invite_storage:set(nil, tokens);
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155
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156 return { info = module:http_url() .. "/" .. uuid, status = "completed" };
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157 end
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158
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159 local adhoc_invite = adhoc_new("Invite user", "invite", invite_command_handler, "local_user")
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160
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161 module:add_item("adhoc", adhoc_invite);