mirror of
https://github.com/bjc/prosody.git
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169 lines
7.4 KiB
Lua
169 lines
7.4 KiB
Lua
-- Prosody IM
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-- Copyright (C) 2008-2010 Matthew Wild
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-- Copyright (C) 2008-2010 Waqas Hussain
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--
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-- This project is MIT/X11 licensed. Please see the
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-- COPYING file in the source package for more information.
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--
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local hosts = _G.hosts;
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local st = require "util.stanza";
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local datamanager = require "util.datamanager";
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local usermanager_user_exists = require "core.usermanager".user_exists;
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local usermanager_create_user = require "core.usermanager".create_user;
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local datamanager_store = require "util.datamanager".store;
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local os_time = os.time;
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local nodeprep = require "util.encodings".stringprep.nodeprep;
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module:add_feature("jabber:iq:register");
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module:add_iq_handler("c2s", "jabber:iq:register", function (session, stanza)
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if stanza.tags[1].name == "query" then
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local query = stanza.tags[1];
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if stanza.attr.type == "get" then
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local reply = st.reply(stanza);
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reply:tag("query", {xmlns = "jabber:iq:register"})
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:tag("registered"):up()
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:tag("username"):text(session.username):up()
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:tag("password"):up();
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session.send(reply);
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elseif stanza.attr.type == "set" then
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if query.tags[1] and query.tags[1].name == "remove" then
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-- TODO delete user auth data, send iq response, kick all user resources with a <not-authorized/>, delete all user data
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local username, host = session.username, session.host;
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--session.send(st.error_reply(stanza, "cancel", "not-allowed"));
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--return;
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usermanager_create_user(username, nil, host); -- Disable account
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-- FIXME the disabling currently allows a different user to recreate the account
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-- we should add an in-memory account block mode when we have threading
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session.send(st.reply(stanza));
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local roster = session.roster;
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for _, session in pairs(hosts[host].sessions[username].sessions) do -- disconnect all resources
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session:close({condition = "not-authorized", text = "Account deleted"});
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end
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-- TODO datamanager should be able to delete all user data itself
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datamanager.store(username, host, "vcard", nil);
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datamanager.store(username, host, "private", nil);
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datamanager.store(username, host, "offline", nil);
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local bare = username.."@"..host;
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for jid, item in pairs(roster) do
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if jid and jid ~= "pending" then
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if item.subscription == "both" or item.subscription == "from" or (roster.pending and roster.pending[jid]) then
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core_post_stanza(hosts[host], st.presence({type="unsubscribed", from=bare, to=jid}));
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end
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if item.subscription == "both" or item.subscription == "to" or item.ask then
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core_post_stanza(hosts[host], st.presence({type="unsubscribe", from=bare, to=jid}));
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end
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end
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end
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datamanager.store(username, host, "roster", nil);
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datamanager.store(username, host, "accounts", nil); -- delete accounts datastore at the end
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module:log("info", "User removed their account: %s@%s", username, host);
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module:fire_event("user-deregistered", { username = username, host = host, source = "mod_register", session = session });
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else
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local username = query:child_with_name("username");
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local password = query:child_with_name("password");
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if username and password then
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-- FIXME shouldn't use table.concat
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username = nodeprep(table.concat(username));
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password = table.concat(password);
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if username == session.username then
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if usermanager_create_user(username, password, session.host) then -- password change -- TODO is this the right way?
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session.send(st.reply(stanza));
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else
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-- TODO unable to write file, file may be locked, etc, what's the correct error?
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session.send(st.error_reply(stanza, "wait", "internal-server-error"));
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end
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else
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session.send(st.error_reply(stanza, "modify", "bad-request"));
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end
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else
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session.send(st.error_reply(stanza, "modify", "bad-request"));
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end
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end
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end
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else
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session.send(st.error_reply(stanza, "cancel", "service-unavailable"));
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end;
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end);
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local recent_ips = {};
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local min_seconds_between_registrations = module:get_option("min_seconds_between_registrations");
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local whitelist_only = module:get_option("whitelist_registration_only");
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local whitelisted_ips = module:get_option("registration_whitelist") or { "127.0.0.1" };
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local blacklisted_ips = module:get_option("registration_blacklist") or {};
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for _, ip in ipairs(whitelisted_ips) do whitelisted_ips[ip] = true; end
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for _, ip in ipairs(blacklisted_ips) do blacklisted_ips[ip] = true; end
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module:add_iq_handler("c2s_unauthed", "jabber:iq:register", function (session, stanza)
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if module:get_option("allow_registration") == false then
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session.send(st.error_reply(stanza, "cancel", "service-unavailable"));
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elseif stanza.tags[1].name == "query" then
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local query = stanza.tags[1];
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if stanza.attr.type == "get" then
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local reply = st.reply(stanza);
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reply:tag("query", {xmlns = "jabber:iq:register"})
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:tag("instructions"):text("Choose a username and password for use with this service."):up()
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:tag("username"):up()
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:tag("password"):up();
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session.send(reply);
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elseif stanza.attr.type == "set" then
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if query.tags[1] and query.tags[1].name == "remove" then
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session.send(st.error_reply(stanza, "auth", "registration-required"));
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else
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local username = query:child_with_name("username");
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local password = query:child_with_name("password");
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if username and password then
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-- Check that the user is not blacklisted or registering too often
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if not session.ip then
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module:log("debug", "User's IP not known; can't apply blacklist/whitelist");
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elseif blacklisted_ips[session.ip] or (whitelist_only and not whitelisted_ips[session.ip]) then
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session.send(st.error_reply(stanza, "cancel", "not-acceptable", "You are not allowed to register an account."));
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return;
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elseif min_seconds_between_registrations and not whitelisted_ips[session.ip] then
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if not recent_ips[session.ip] then
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recent_ips[session.ip] = { time = os_time(), count = 1 };
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else
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local ip = recent_ips[session.ip];
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ip.count = ip.count + 1;
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if os_time() - ip.time < min_seconds_between_registrations then
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ip.time = os_time();
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session.send(st.error_reply(stanza, "wait", "not-acceptable"));
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return;
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end
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ip.time = os_time();
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end
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end
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-- FIXME shouldn't use table.concat
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username = nodeprep(table.concat(username));
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password = table.concat(password);
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local host = module.host;
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if not username or username == "" then
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session.send(st.error_reply(stanza, "modify", "not-acceptable", "The requested username is invalid."));
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elseif usermanager_user_exists(username, host) then
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session.send(st.error_reply(stanza, "cancel", "conflict", "The requested username already exists."));
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else
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if usermanager_create_user(username, password, host) then
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session.send(st.reply(stanza)); -- user created!
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module:log("info", "User account created: %s@%s", username, host);
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module:fire_event("user-registered", {
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username = username, host = host, source = "mod_register",
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session = session });
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else
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-- TODO unable to write file, file may be locked, etc, what's the correct error?
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session.send(st.error_reply(stanza, "wait", "internal-server-error", "Failed to write data to disk."));
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end
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end
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else
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session.send(st.error_reply(stanza, "modify", "not-acceptable"));
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end
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end
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end
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else
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session.send(st.error_reply(stanza, "cancel", "service-unavailable"));
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end;
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end);
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