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mod_easy_invite/mod_easy_invite.lua @ 3885:1ec45dbc7db5
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author | Kim Alvefur <zash@zash.se> |
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date | Fri, 07 Feb 2020 20:49:07 +0100 |
parent | 3788:14028430638b |
child | 4022:3ac31ddab7eb |
rev | line source |
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1 -- XEP-0401: Easy User Onboarding |
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2 local dataforms = require "util.dataforms"; |
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3 local datetime = require "util.datetime"; |
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4 local jid_bare = require "util.jid".bare; |
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5 local jid_split = require "util.jid".split; |
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6 local split_jid = require "util.jid".split; |
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7 local rostermanager = require "core.rostermanager"; |
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8 local st = require "util.stanza"; |
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9 |
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10 local invite_only = module:get_option_boolean("registration_invite_only", true); |
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11 local require_encryption = module:get_option_boolean("c2s_require_encryption", |
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12 module:get_option_boolean("require_encryption", false)); |
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13 |
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14 local new_adhoc = module:require("adhoc").new; |
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15 |
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16 -- Whether local users can invite other users to create an account on this server |
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17 local allow_user_invites = module:get_option_boolean("allow_user_invites", true); |
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18 |
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19 local invites; |
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20 if prosody.shutdown then -- COMPAT hack to detect prosodyctl |
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21 invites = module:depends("invites"); |
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22 end |
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23 |
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24 local invite_result_form = dataforms.new({ |
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25 title = "Your Invite", |
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26 -- TODO instructions = something helpful |
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27 { |
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28 name = "uri"; |
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29 label = "Invite URI"; |
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30 -- TODO desc = something helpful |
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31 }, |
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32 { |
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33 name = "url" ; |
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34 var = "landing-url"; |
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35 label = "Invite landing URL"; |
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36 }, |
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37 { |
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38 name = "expire"; |
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39 label = "Token valid until"; |
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40 }, |
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41 }); |
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42 |
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43 module:depends("adhoc"); |
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44 module:provides("adhoc", new_adhoc("New Invite", "urn:xmpp:invite#invite", |
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45 function (_, data) |
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46 local username = split_jid(data.from); |
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47 local invite = invites.create_contact(username, allow_user_invites); |
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48 --TODO: check errors |
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49 return { |
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50 status = "completed"; |
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51 form = { |
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52 layout = invite_result_form; |
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53 values = { |
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54 uri = invite.uri; |
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55 url = invite.landing_page; |
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56 expire = datetime.datetime(invite.expires); |
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57 }; |
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58 }; |
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59 }; |
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60 end, "local_user")); |
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61 |
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62 |
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63 -- TODO |
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64 -- module:provides("adhoc", new_adhoc("Create account", "urn:xmpp:invite#create-account", function () end, "admin")); |
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65 |
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66 -- XEP-0379: Pre-Authenticated Roster Subscription |
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67 module:hook("presence/bare", function (event) |
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68 local stanza = event.stanza; |
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69 if stanza.attr.type ~= "subscribe" then return end |
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70 |
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71 local preauth = stanza:get_child("preauth", "urn:xmpp:pars:0"); |
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72 if not preauth then return end |
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73 local token = preauth.attr.token; |
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74 if not token then return end |
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75 |
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76 local username, host = jid_split(stanza.attr.to); |
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77 |
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78 local invite, err = invites.get(token, username); |
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79 |
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80 if not invite then |
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81 module:log("debug", "Got invalid token, error: %s", err); |
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82 return; |
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83 end |
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84 |
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85 local contact = jid_bare(stanza.attr.from); |
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86 |
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87 module:log("debug", "Approving inbound subscription to %s from %s", username, contact); |
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88 if rostermanager.set_contact_pending_in(username, host, contact, stanza) then |
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89 if rostermanager.subscribed(username, host, contact) then |
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90 invite:use(); |
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91 rostermanager.roster_push(username, host, contact); |
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92 |
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93 -- Send back a subscription request (goal is mutual subscription) |
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94 if not rostermanager.is_user_subscribed(username, host, contact) |
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95 and not rostermanager.is_contact_pending_out(username, host, contact) then |
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96 module:log("debug", "Sending automatic subscription request to %s from %s", contact, username); |
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97 if rostermanager.set_contact_pending_out(username, host, contact) then |
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98 rostermanager.roster_push(username, host, contact); |
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99 module:send(st.presence({type = "subscribe", to = contact })); |
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100 else |
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101 module:log("warn", "Failed to set contact pending out for %s", username); |
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102 end |
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103 end |
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104 end |
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105 end |
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106 end, 1); |
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107 |
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108 -- TODO sender side, magic automatic mutual subscription |
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109 |
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110 local invite_stream_feature = st.stanza("register", { xmlns = "urn:xmpp:invite" }):up(); |
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111 module:hook("stream-features", function(event) |
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112 local session, features = event.origin, event.features; |
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113 |
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114 -- Advertise to unauthorized clients only. |
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115 if session.type ~= "c2s_unauthed" or (require_encryption and not session.secure) then |
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116 return |
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117 end |
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118 |
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119 features:add_child(invite_stream_feature); |
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120 end); |
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121 |
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122 -- Client is submitting a preauth token to allow registration |
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123 module:hook("stanza/iq/urn:xmpp:pars:0:preauth", function(event) |
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124 local preauth = event.stanza.tags[1]; |
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125 local token = preauth.attr.token; |
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126 local validated_invite = invites.get(token); |
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127 if not validated_invite then |
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128 local reply = st.error_reply(event.stanza, "cancel", "forbidden", "The invite token is invalid or expired"); |
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129 event.origin.send(reply); |
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130 return true; |
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131 end |
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132 event.origin.validated_invite = validated_invite; |
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133 local reply = st.reply(event.stanza); |
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134 event.origin.send(reply); |
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135 return true; |
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136 end); |
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137 |
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138 -- Registration attempt - ensure a valid preauth token has been supplied |
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139 module:hook("user-registering", function (event) |
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140 local validated_invite = event.session.validated_invite; |
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141 if invite_only and not validated_invite then |
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142 event.allowed = false; |
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143 event.reason = "Registration on this server is through invitation only"; |
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144 return; |
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145 end |
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146 end); |
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147 |
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148 -- Make a *one-way* subscription. User will see when contact is online, |
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149 -- contact will not see when user is online. |
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150 function subscribe(host, user_username, contact_username) |
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151 local user_jid = user_username.."@"..host; |
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152 local contact_jid = contact_username.."@"..host; |
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153 -- Update user's roster to say subscription request is pending... |
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154 rostermanager.set_contact_pending_out(user_username, host, contact_jid); |
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155 -- Update contact's roster to say subscription request is pending... |
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156 rostermanager.set_contact_pending_in(contact_username, host, user_jid); |
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157 -- Update contact's roster to say subscription request approved... |
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158 rostermanager.subscribed(contact_username, host, user_jid); |
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159 -- Update user's roster to say subscription request approved... |
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160 rostermanager.process_inbound_subscription_approval(user_username, host, contact_jid); |
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161 end |
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162 |
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163 -- Make a mutual subscription between jid1 and jid2. Each JID will see |
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164 -- when the other one is online. |
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165 function subscribe_both(host, user1, user2) |
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166 subscribe(host, user1, user2); |
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167 subscribe(host, user2, user1); |
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168 end |
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169 |
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170 -- Registration successful, if there was a preauth token, mark it as used |
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171 module:hook("user-registered", function (event) |
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172 local validated_invite = event.session.validated_invite; |
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173 if not validated_invite then |
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174 return; |
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175 end |
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176 local inviter_username = validated_invite.inviter; |
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177 validated_invite:use(); |
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178 |
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179 if not inviter_username then return; end |
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180 |
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181 local contact_username = event.username; |
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182 |
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183 module:log("debug", "Creating mutual subscription between %s and %s", inviter_username, contact_username); |
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184 subscribe_both(module.host, inviter_username, contact_username); |
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185 end); |
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186 |
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187 |
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188 local sm = require "core.storagemanager"; |
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189 function module.command(arg) |
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190 if #arg < 2 or arg[2] ~= "generate" then |
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191 print("usage: prosodyctl mod_easy_invite example.net generate"); |
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192 return; |
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193 end |
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194 |
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195 local host = arg[1]; |
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196 assert(hosts[host], "Host "..tostring(host).." does not exist"); |
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197 sm.initialize_host(host); |
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198 |
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199 invites = module:context(host):depends("invites"); |
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200 local invite = invites.create_account(); |
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201 print(invite.uri); |
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202 end |
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203 |