local st = require "util.stanza"; local jid_split = require "util.jid".split; local jid_bare = require "util.jid".bare; local rostermanager = require "core.rostermanager"; local require_encryption = module:get_option_boolean("c2s_require_encryption", module:get_option_boolean("require_encryption", false)); local invite_only = module:get_option_boolean("registration_invite_only", true); local invites; if prosody.shutdown then -- COMPAT hack to detect prosodyctl invites = module:depends("invites"); end local invite_stream_feature = st.stanza("register", { xmlns = "urn:xmpp:invite" }):up(); module:hook("stream-features", function(event) local session, features = event.origin, event.features; -- Advertise to unauthorized clients only. if session.type ~= "c2s_unauthed" or (require_encryption and not session.secure) then return end features:add_child(invite_stream_feature); end); -- XEP-0379: Pre-Authenticated Roster Subscription module:hook("presence/bare", function (event) local stanza = event.stanza; if stanza.attr.type ~= "subscribe" then return end local preauth = stanza:get_child("preauth", "urn:xmpp:pars:0"); if not preauth then return end local token = preauth.attr.token; if not token then return end local username, host = jid_split(stanza.attr.to); local invite, err = invites.get(token, username); if not invite then module:log("debug", "Got invalid token, error: %s", err); return; end local contact = jid_bare(stanza.attr.from); module:log("debug", "Approving inbound subscription to %s from %s", username, contact); if rostermanager.set_contact_pending_in(username, host, contact, stanza) then if rostermanager.subscribed(username, host, contact) then invite:use(); rostermanager.roster_push(username, host, contact); -- Send back a subscription request (goal is mutual subscription) if not rostermanager.is_user_subscribed(username, host, contact) and not rostermanager.is_contact_pending_out(username, host, contact) then module:log("debug", "Sending automatic subscription request to %s from %s", contact, username); if rostermanager.set_contact_pending_out(username, host, contact) then rostermanager.roster_push(username, host, contact); module:send(st.presence({type = "subscribe", from = username.."@"..host, to = contact })); else module:log("warn", "Failed to set contact pending out for %s", username); end end end end end, 1); -- Client is submitting a preauth token to allow registration module:hook("stanza/iq/urn:xmpp:pars:0:preauth", function(event) local preauth = event.stanza.tags[1]; local token = preauth.attr.token; local validated_invite = invites.get(token); if not validated_invite then local reply = st.error_reply(event.stanza, "cancel", "forbidden", "The invite token is invalid or expired"); event.origin.send(reply); return true; end event.origin.validated_invite = validated_invite; local reply = st.reply(event.stanza); event.origin.send(reply); return true; end); -- Registration attempt - ensure a valid preauth token has been supplied module:hook("user-registering", function (event) local validated_invite = event.validated_invite or (event.session and event.session.validated_invite); if invite_only and not validated_invite then event.allowed = false; event.reason = "Registration on this server is through invitation only"; return; elseif not validated_invite then -- This registration is not using an invite, but -- the server is not in invite-only mode, so nothing -- for this module to do... return; end if validated_invite and validated_invite.additional_data and validated_invite.additional_data.allow_reset then event.allow_reset = validated_invite.additional_data.allow_reset; end end); -- Make a *one-way* subscription. User will see when contact is online, -- contact will not see when user is online. function subscribe(host, user_username, contact_username) local user_jid = user_username.."@"..host; local contact_jid = contact_username.."@"..host; -- Update user's roster to say subscription request is pending... rostermanager.set_contact_pending_out(user_username, host, contact_jid); -- Update contact's roster to say subscription request is pending... rostermanager.set_contact_pending_in(contact_username, host, user_jid); -- Update contact's roster to say subscription request approved... rostermanager.subscribed(contact_username, host, user_jid); -- Update user's roster to say subscription request approved... rostermanager.process_inbound_subscription_approval(user_username, host, contact_jid); end -- Make a mutual subscription between jid1 and jid2. Each JID will see -- when the other one is online. function subscribe_both(host, user1, user2) subscribe(host, user1, user2); subscribe(host, user2, user1); end -- Registration successful, if there was a preauth token, mark it as used module:hook("user-registered", function (event) local validated_invite = event.validated_invite or (event.session and event.session.validated_invite); if not validated_invite then return; end local inviter_username = validated_invite.inviter; local contact_username = event.username; validated_invite:use(); if inviter_username then module:log("debug", "Creating mutual subscription between %s and %s", inviter_username, contact_username); subscribe_both(module.host, inviter_username, contact_username); end if validated_invite.additional_data then module:log("debug", "Importing roles from invite"); local roles = validated_invite.additional_data.roles; if roles then module:open_store("roles"):set(contact_username, roles); end end end); -- Equivalent of user-registered but for when the account already existed -- (i.e. password reset) module:hook("user-password-reset", function (event) local validated_invite = event.validated_invite or (event.session and event.session.validated_invite); if not validated_invite then return; end validated_invite:use(); end);