prosody-modules
84e60c3d6e61
mod_invites/mod_invites.lua

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mod_invites/mod_invites.lua @ 4342:84e60c3d6e61

mod_invites: Fix luacheck warning
author Matthew Wild <mwild1@gmail.com>
date Sun, 17 Jan 2021 12:47:56 +0000
parent 4341:a104440c20a4
child 4344:844cfc8c4039
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 local id = require "util.id";
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2 local it = require "util.iterators";
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3 local url = require "socket.url";
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4 local jid_node = require "util.jid".node;
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5 local jid_split = require "util.jid".split;
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6
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7 local invite_ttl = module:get_option_number("invite_expiry", 86400 * 7);
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8
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9 local token_storage;
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10 if prosody.process_type == "prosody" or prosody.shutdown then
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11 token_storage = module:open_store("invite_token", "map");
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12 end
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13
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14 local function get_uri(action, jid, token, params) --> string
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15 return url.build({
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16 scheme = "xmpp",
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17 path = jid,
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18 query = action..";preauth="..token..(params and (";"..params) or ""),
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19 });
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20 end
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21
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22 local function create_invite(invite_action, invite_jid, allow_registration, additional_data)
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23 local token = id.medium();
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24
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25 local created_at = os.time();
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26 local expires = created_at + invite_ttl;
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27
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28 local invite_params = (invite_action == "roster" and allow_registration) and "ibr=y" or nil;
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29
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30 local invite = {
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31 type = invite_action;
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32 jid = invite_jid;
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33
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34 token = token;
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35 allow_registration = allow_registration;
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36 additional_data = additional_data;
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37
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38 uri = get_uri(invite_action, invite_jid, token, invite_params);
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39
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40 created_at = created_at;
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41 expires = expires;
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42 };
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43
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44 module:fire_event("invite-created", invite);
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45
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46 if allow_registration then
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47 local ok, err = token_storage:set(nil, token, invite);
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48 if not ok then
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49 module:log("warn", "Failed to store account invite: %s", err);
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50 return nil, "internal-server-error";
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51 end
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52 end
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53
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54 if invite_action == "roster" then
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55 local username = jid_node(invite_jid);
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56 local ok, err = token_storage:set(username, token, expires);
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57 if not ok then
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58 module:log("warn", "Failed to store subscription invite: %s", err);
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59 return nil, "internal-server-error";
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60 end
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61 end
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62
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63 return invite;
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64 end
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65
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66 -- Create invitation to register an account (optionally restricted to the specified username)
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67 function create_account(account_username, additional_data) --luacheck: ignore 131/create_account
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68 local jid = account_username and (account_username.."@"..module.host) or module.host;
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69 return create_invite("register", jid, true, additional_data);
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70 end
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71
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72 -- Create invitation to reset the password for an account
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73 function create_account_reset(account_username) --luacheck: ignore 131/create_account_reset
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74 return create_account(account_username, { allow_reset = account_username });
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75 end
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76
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77 -- Create invitation to become a contact of a local user
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78 function create_contact(username, allow_registration, additional_data) --luacheck: ignore 131/create_contact
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79 return create_invite("roster", username.."@"..module.host, allow_registration, additional_data);
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80 end
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81
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82 -- Iterates pending (non-expired, unused) invites that allow registration
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83 function pending_account_invites() --luacheck: ignore 131/pending_account_invites
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84 local store = module:open_store("invite_token");
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85 local now = os.time();
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86 local function is_valid_invite(_, invite)
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87 return invite.expires > now;
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88 end
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89 return it.filter(is_valid_invite, pairs(store:get(nil) or {}));
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90 end
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91
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92 function get_account_invite_info(token)
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93 if not token then
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94 return nil, "no-token";
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95 end
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96
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97 -- Fetch from host store (account invite)
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98 local token_info = token_storage:get(nil, token);
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99 if not token_info then
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100 return nil, "token-invalid";
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101 elseif os.time() > token_info.expires then
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102 return nil, "token-expired";
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103 end
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104
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105 return token_info;
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106 end
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107
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108 function delete_account_invite(token)
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109 if not token then
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110 return nil, "no-token";
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111 end
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112
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113 return token_storage:set(nil, token, nil);
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114 end
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115
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116 local valid_invite_methods = {};
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117 local valid_invite_mt = { __index = valid_invite_methods };
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118
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119 function valid_invite_methods:use()
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120 if self.username then
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121 -- Also remove the contact invite if present, on the
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122 -- assumption that they now have a mutual subscription
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123 token_storage:set(self.username, self.token, nil);
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124 end
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125 token_storage:set(nil, self.token, nil);
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126
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127 return true;
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128 end
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129
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130 -- Get a validated invite (or nil, err). Must call :use() on the
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131 -- returned invite after it is actually successfully used
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132 -- For "roster" invites, the username of the local user (who issued
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133 -- the invite) must be passed.
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134 -- If no username is passed, but the registration is a roster invite
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135 -- from a local user, the "inviter" field of the returned invite will
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136 -- be set to their username.
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137 function get(token, username)
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138 if not token then
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139 return nil, "no-token";
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140 end
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141
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142 local valid_until, inviter;
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143
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144 -- Fetch from host store (account invite)
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145 local token_info = token_storage:get(nil, token);
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146
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147 if username then -- token being used for subscription
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148 -- Fetch from user store (subscription invite)
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149 valid_until = token_storage:get(username, token);
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150 else -- token being used for account creation
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151 valid_until = token_info and token_info.expires;
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152 if token_info and token_info.type == "roster" then
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153 username = jid_node(token_info.jid);
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154 inviter = username;
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155 end
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156 end
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157
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158 if not valid_until then
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159 module:log("debug", "Got unknown token: %s", token);
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160 return nil, "token-invalid";
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161 elseif os.time() > valid_until then
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162 module:log("debug", "Got expired token: %s", token);
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163 return nil, "token-expired";
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164 end
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165
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166 return setmetatable({
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167 token = token;
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168 username = username;
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169 inviter = inviter;
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170 type = token_info and token_info.type or "roster";
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171 uri = token_info and token_info.uri or get_uri("roster", username.."@"..module.host, token);
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172 additional_data = token_info and token_info.additional_data or nil;
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173 }, valid_invite_mt);
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174 end
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175
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176 function use(token) --luacheck: ignore 131/use
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177 local invite = get(token);
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178 return invite and invite:use();
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179 end
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180
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181 --- shell command
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182 do
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183 -- Since the console is global this overwrites the command for
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184 -- each host it's loaded on, but this should be fine.
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185
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186 local get_module = require "core.modulemanager".get_module;
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187
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188 local console_env = module:shared("/*/admin_shell/env");
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189
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190 -- luacheck: ignore 212/self
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191 console_env.invite = {};
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192 function console_env.invite:create_account(user_jid)
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193 local username, host = jid_split(user_jid);
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194 local mod_invites, err = get_module(host, "invites");
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195 if not mod_invites then return nil, err or "mod_invites not loaded on this host"; end
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196 local invite, err = mod_invites.create_account(username);
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197 if not invite then return nil, err; end
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198 return true, invite.uri;
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199 end
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200
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201 function console_env.invite:create_contact(user_jid, allow_registration)
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202 local username, host = jid_split(user_jid);
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203 local mod_invites, err = get_module(host, "invites");
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204 if not mod_invites then return nil, err or "mod_invites not loaded on this host"; end
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205 local invite, err = mod_invites.create_contact(username, allow_registration);
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206 if not invite then return nil, err; end
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207 return true, invite.uri;
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208 end
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209 end
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210
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211 --- prosodyctl command
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212 function module.command(arg)
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213 if #arg < 2 or arg[1] ~= "generate" then
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214 print("usage: prosodyctl mod_"..module.name.." generate example.com");
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215 return;
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216 end
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217 table.remove(arg, 1); -- pop command
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218
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219 local sm = require "core.storagemanager";
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220 local mm = require "core.modulemanager";
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221
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222 local host = arg[1];
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223 assert(hosts[host], "Host "..tostring(host).." does not exist");
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224 sm.initialize_host(host);
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225 table.remove(arg, 1); -- pop host
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226 module.host = host; --luacheck: ignore 122/module
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227 token_storage = module:open_store("invite_token", "map");
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228
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229 -- Load mod_invites
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230 local invites = module:depends("invites");
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231 local invites_page_module = module:get_option_string("invites_page_module", "invites_page");
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232 if mm.get_modules_for_host(host):contains(invites_page_module) then
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233 module:depends(invites_page_module);
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234 end
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235
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236
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237 local invite, roles;
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238 if arg[1] == "--reset" then
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239 local nodeprep = require "util.encodings".stringprep.nodeprep;
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240 local username = nodeprep(arg[2]);
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241 if not username then
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242 print("Please supply a valid username to generate a reset link for");
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243 return;
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244 end
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245 invite = assert(invites.create_account_reset(username));
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246 else
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247 if arg[1] == "--admin" then
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248 roles = { ["prosody:admin"] = true };
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249 elseif arg[1] == "--role" then
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250 roles = { [arg[2]] = true };
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251 end
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252 invite = assert(invites.create_account(nil, { roles = roles }));
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253 end
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254
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255 print(invite.landing_page or invite.uri);
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256 end