mod_tls: Cleanup.
[prosody.git] / plugins / mod_register.lua
index ad0ba47819ac90a44d64eeb75d743a81bf57ce2a..be1be0aebecb1dca7c28a74df66e74af49ff8c90 100644 (file)
@@ -1,10 +1,24 @@
+-- Prosody IM
+-- 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 hosts = _G.hosts;
 local st = require "util.stanza";
-local send = require "core.sessionmanager".send_to_session;
+local datamanager = require "util.datamanager";
 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;
+
+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
@@ -13,40 +27,80 @@ add_iq_handler("c2s", "jabber:iq:register", function (session, stanza)
                                :tag("registered"):up()
                                :tag("username"):text(session.username):up()
                                :tag("password"):up();
-                       send(session, reply);
+                       session.send(reply);
                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
-                               send(session, st.error_reply(stanza, "cancel", "not-allowed"));
+                               local username, host = session.username, session.host;
+                               --session.send(st.error_reply(stanza, "cancel", "not-allowed"));
+                               --return;
+                               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[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(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 and jid ~= "pending" then
+                                               if item.subscription == "both" or item.subscription == "from" or (roster.pending and roster.pending[jid]) then
+                                                       core_post_stanza(hosts[host], st.presence({type="unsubscribed", from=bare, to=jid}));
+                                               end
+                                               if item.subscription == "both" or item.subscription == "to" or item.ask then
+                                                       core_post_stanza(hosts[host], st.presence({type="unsubscribe", from=bare, to=jid}));
+                                               end
+                                       end
+                               end
+                               datamanager.store(username, host, "roster", nil);
+                               datamanager.store(username, host, "accounts", nil); -- delete accounts datastore at the end
+                               module:log("info", "User removed their account: %s@%s", username, host);
+                               module:fire_event("user-deregistered", { username = username, host = host, source = "mod_register", session = session });
                        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?
-                                                       send(session, st.reply(stanza));
+                                                       session.send(st.reply(stanza));
                                                else
                                                        -- TODO unable to write file, file may be locked, etc, what's the correct error?
-                                                       send(session, st.error_reply(stanza, "wait", "internal-server-error"));
+                                                       session.send(st.error_reply(stanza, "wait", "internal-server-error"));
                                                end
                                        else
-                                               send(session, st.error_reply(stanza, "modify", "bad-request"));
+                                               session.send(st.error_reply(stanza, "modify", "bad-request"));
                                        end
                                else
-                                       send(session, st.error_reply(stanza, "modify", "bad-request"));
+                                       session.send(st.error_reply(stanza, "modify", "bad-request"));
                                end
                        end
                end
        else
-               send(session, st.error_reply(stanza, "cancel", "service-unavailable"));
+               session.send(st.error_reply(stanza, "cancel", "service-unavailable"));
        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 = module:get_option("min_seconds_between_registrations");
+local whitelist_only = module:get_option("whitelist_registration_only");
+local whitelisted_ips = module:get_option("registration_whitelist") or { "127.0.0.1" };
+local blacklisted_ips = module:get_option("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 module:get_option("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);
@@ -54,33 +108,62 @@ add_iq_handler("c2s_unauthed", "jabber:iq:register", function (session, stanza)
                                :tag("instructions"):text("Choose a username and password for use with this service."):up()
                                :tag("username"):up()
                                :tag("password"):up();
-                       send(session, reply);
+                       session.send(reply);
                elseif stanza.attr.type == "set" then
                        if query.tags[1] and query.tags[1].name == "remove" then
-                               send(session, st.error_reply(stanza, "auth", "registration-required"));
+                               session.send(st.error_reply(stanza, "auth", "registration-required"));
                        else
                                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 not session.ip then
+                                               module:log("debug", "User's IP not known; can't apply blacklist/whitelist");
+                                       elseif blacklisted_ips[session.ip] or (whitelist_only and not whitelisted_ips[session.ip]) then
+                                               session.send(st.error_reply(stanza, "cancel", "not-acceptable", "You are not allowed to register an account."));
+                                               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, "wait", "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
-                                               send(session, st.error_reply(stanza, "cancel", "conflict"));
+                                       local host = module.host;
+                                       if not username or username == "" then
+                                               session.send(st.error_reply(stanza, "modify", "not-acceptable", "The requested username is invalid."));
+                                       elseif usermanager_user_exists(username, host) then
+                                               session.send(st.error_reply(stanza, "cancel", "conflict", "The requested username already exists."));
                                        else
-                                               if usermanager_create_user(username, password, session.host) then
-                                                       send(session, st.reply(stanza)); -- user created!
+                                               if usermanager_create_user(username, password, host) then
+                                                       session.send(st.reply(stanza)); -- user created!
+                                                       module:log("info", "User account created: %s@%s", username, host);
+                                                       module:fire_event("user-registered", { 
+                                                               username = username, host = host, source = "mod_register",
+                                                               session = session });
                                                else
                                                        -- TODO unable to write file, file may be locked, etc, what's the correct error?
-                                                       send(session, st.error_reply(stanza, "wait", "internal-server-error"));
+                                                       session.send(st.error_reply(stanza, "wait", "internal-server-error", "Failed to write data to disk."));
                                                end
                                        end
                                else
-                                       send(session, st.error_reply(stanza, "modify", "not-acceptable"));
+                                       session.send(st.error_reply(stanza, "modify", "not-acceptable"));
                                end
                        end
                end
        else
-               send(session, st.error_reply(stanza, "cancel", "service-unavailable"));
+               session.send(st.error_reply(stanza, "cancel", "service-unavailable"));
        end;
 end);
+