mod_component: Deregister component on disconnect
[prosody.git] / plugins / mod_register.lua
index 0974725da0e8b5fb45e5731744b700d1343a859f..c04eca0a702abe4859e3d81b175425443b372148 100644 (file)
@@ -1,12 +1,23 @@
+-- Prosody IM v0.4
+-- Copyright (C) 2008-2009 Matthew Wild
+-- Copyright (C) 2008-2009 Waqas Hussain
+-- 
+-- This project is MIT/X11 licensed. Please see the
+-- COPYING file in the source package for more information.
+--
+
+
 
 local st = require "util.stanza";
 local usermanager_user_exists = require "core.usermanager".user_exists;
 local usermanager_create_user = require "core.usermanager".create_user;
 local datamanager_store = require "util.datamanager".store;
+local os_time = os.time;
+local nodeprep = require "util.encodings".stringprep.nodeprep;
 
-require "core.discomanager".set("register", "jabber:iq:register");
+module:add_feature("jabber:iq:register");
 
-add_iq_handler("c2s", "jabber:iq:register", function (session, stanza)
+module:add_iq_handler("c2s", "jabber:iq:register", function (session, stanza)
        if stanza.tags[1].name == "query" then
                local query = stanza.tags[1];
                if stanza.attr.type == "get" then
@@ -19,22 +30,23 @@ add_iq_handler("c2s", "jabber:iq:register", function (session, stanza)
                elseif stanza.attr.type == "set" then
                        if query.tags[1] and query.tags[1].name == "remove" then
                                -- TODO delete user auth data, send iq response, kick all user resources with a <not-authorized/>, delete all user data
+                               local username, host = session.username, session.host;
                                --session.send(st.error_reply(stanza, "cancel", "not-allowed"));
                                --return;
-                               usermanager_create_user(session.username, nil, session.host); -- Disable account
+                               usermanager_create_user(username, nil, host); -- Disable account
                                -- FIXME the disabling currently allows a different user to recreate the account
                                -- we should add an in-memory account block mode when we have threading
                                session.send(st.reply(stanza));
                                local roster = session.roster;
-                               for _, session in pairs(hosts[session.host].sessions[session.username].sessions) do -- disconnect all resources
-                                       session:disconnect({condition = "not-authorized", text = "Account deleted"});
+                               for _, session in pairs(hosts[host].sessions[username].sessions) do -- disconnect all resources
+                                       session:close({condition = "not-authorized", text = "Account deleted"});
                                end
                                -- TODO datamanager should be able to delete all user data itself
-                               datamanager.store(session.username, session.host, "roster", nil);
-                               datamanager.store(session.username, session.host, "vCard", nil);
-                               datamanager.store(session.username, session.host, "private", nil);
-                               datamanager.store(session.username, session.host, "offline", nil);
-                               local bare = session.username.."@"..session.host;
+                               datamanager.store(username, host, "roster", nil);
+                               datamanager.store(username, host, "vcard", nil);
+                               datamanager.store(username, host, "private", nil);
+                               datamanager.store(username, host, "offline", nil);
+                               --local bare = username.."@"..host;
                                for jid, item in pairs(roster) do
                                        if jid ~= "pending" then
                                                if item.subscription == "both" or item.subscription == "to" then
@@ -45,13 +57,13 @@ add_iq_handler("c2s", "jabber:iq:register", function (session, stanza)
                                                end
                                        end
                                end
-                               datamanager.store(session.username, session.host, "accounts", nil); -- delete accounts datastore at the end
+                               datamanager.store(username, host, "accounts", nil); -- delete accounts datastore at the end
                        else
                                local username = query:child_with_name("username");
                                local password = query:child_with_name("password");
                                if username and password then
                                        -- FIXME shouldn't use table.concat
-                                       username = table.concat(username);
+                                       username = nodeprep(table.concat(username));
                                        password = table.concat(password);
                                        if username == session.username then
                                                if usermanager_create_user(username, password, session.host) then -- password change -- TODO is this the right way?
@@ -73,8 +85,19 @@ add_iq_handler("c2s", "jabber:iq:register", function (session, stanza)
        end;
 end);
 
-add_iq_handler("c2s_unauthed", "jabber:iq:register", function (session, stanza)
-       if stanza.tags[1].name == "query" then
+local recent_ips = {};
+local min_seconds_between_registrations = config.get(module.host, "core", "min_seconds_between_registrations");
+local whitelist_only = config.get(module.host, "core", "whitelist_registration_only");
+local whitelisted_ips = config.get(module.host, "core", "registration_whitelist") or { "127.0.0.1" };
+local blacklisted_ips = config.get(module.host, "core", "registration_blacklist") or {};
+
+for _, ip in ipairs(whitelisted_ips) do whitelisted_ips[ip] = true; end
+for _, ip in ipairs(blacklisted_ips) do blacklisted_ips[ip] = true; end
+
+module:add_iq_handler("c2s_unauthed", "jabber:iq:register", function (session, stanza)
+       if config.get(module.host, "core", "allow_registration") == false then
+               session.send(st.error_reply(stanza, "cancel", "service-unavailable"));
+       elseif stanza.tags[1].name == "query" then
                local query = stanza.tags[1];
                if stanza.attr.type == "get" then
                        local reply = st.reply(stanza);
@@ -90,8 +113,28 @@ add_iq_handler("c2s_unauthed", "jabber:iq:register", function (session, stanza)
                                local username = query:child_with_name("username");
                                local password = query:child_with_name("password");
                                if username and password then
+                                       -- Check that the user is not blacklisted or registering too often
+                                       if blacklisted_ips[session.ip] or (whitelist_only and not whitelisted_ips[session.ip]) then
+                                                       session.send(st.error_reply(stanza, "cancel", "not-acceptable"));
+                                                       return;
+                                       elseif min_seconds_between_registrations and not whitelisted_ips[session.ip] then
+                                               if not recent_ips[session.ip] then
+                                                       recent_ips[session.ip] = { time = os_time(), count = 1 };
+                                               else
+                                               
+                                                       local ip = recent_ips[session.ip];
+                                                       ip.count = ip.count + 1;
+                                                       
+                                                       if os_time() - ip.time < min_seconds_between_registrations then
+                                                               ip.time = os_time();
+                                                               session.send(st.error_reply(stanza, "cancel", "not-acceptable"));
+                                                               return;
+                                                       end
+                                                       ip.time = os_time();
+                                               end
+                                       end
                                        -- FIXME shouldn't use table.concat
-                                       username = table.concat(username);
+                                       username = nodeprep(table.concat(username));
                                        password = table.concat(password);
                                        if usermanager_user_exists(username, session.host) then
                                                session.send(st.error_reply(stanza, "cancel", "conflict"));
@@ -112,3 +155,4 @@ add_iq_handler("c2s_unauthed", "jabber:iq:register", function (session, stanza)
                session.send(st.error_reply(stanza, "cancel", "service-unavailable"));
        end;
 end);
+