plugins/mod_register.lua

   1 -- Prosody IM v0.4
   2 -- Copyright (C) 2008-2009 Matthew Wild
   3 -- Copyright (C) 2008-2009 Waqas Hussain
   4 --
   5 -- This project is MIT/X11 licensed. Please see the
   6 -- COPYING file in the source package for more information.
   7 --
   8
   9
  10 local hosts = _G.hosts;
  11 local st = require "util.stanza";
  12 local config = require "core.configmanager";
  13 local datamanager = require "util.datamanager";
  14 local usermanager_user_exists = require "core.usermanager".user_exists;
  15 local usermanager_create_user = require "core.usermanager".create_user;
  16 local datamanager_store = require "util.datamanager".store;
  17 local os_time = os.time;
  18 local nodeprep = require "util.encodings".stringprep.nodeprep;
  19
  20 module:add_feature("jabber:iq:register");
  21
  22 module:add_iq_handler("c2s", "jabber:iq:register", function (session, stanza)
  23         if stanza.tags[1].name == "query" then
  24                 local query = stanza.tags[1];
  25                 if stanza.attr.type == "get" then
  26                         local reply = st.reply(stanza);
  27                         reply:tag("query", {xmlns = "jabber:iq:register"})
  28                                 :tag("registered"):up()
  29                                 :tag("username"):text(session.username):up()
  30                                 :tag("password"):up();
  31                         session.send(reply);
  32                 elseif stanza.attr.type == "set" then
  33                         if query.tags[1] and query.tags[1].name == "remove" then
  34                                 -- TODO delete user auth data, send iq response, kick all user resources with a <not-authorized/>, delete all user data
  35                                 local username, host = session.username, session.host;
  36                                 --session.send(st.error_reply(stanza, "cancel", "not-allowed"));
  37                                 --return;
  38                                 usermanager_create_user(username, nil, host); -- Disable account
  39                                 -- FIXME the disabling currently allows a different user to recreate the account
  40                                 -- we should add an in-memory account block mode when we have threading
  41                                 session.send(st.reply(stanza));
  42                                 local roster = session.roster;
  43                                 for _, session in pairs(hosts[host].sessions[username].sessions) do -- disconnect all resources
  44                                         session:close({condition = "not-authorized", text = "Account deleted"});
  45                                 end
  46                                 -- TODO datamanager should be able to delete all user data itself
  47                                 datamanager.store(username, host, "roster", nil);
  48                                 datamanager.store(username, host, "vcard", nil);
  49                                 datamanager.store(username, host, "private", nil);
  50                                 datamanager.store(username, host, "offline", nil);
  51                                 --local bare = username.."@"..host;
  52                                 for jid, item in pairs(roster) do
  53                                         if jid ~= "pending" then
  54                                                 if item.subscription == "both" or item.subscription == "to" then
  55                                                         -- TODO unsubscribe
  56                                                 end
  57                                                 if item.subscription == "both" or item.subscription == "from" then
  58                                                         -- TODO unsubscribe
  59                                                 end
  60                                         end
  61                                 end
  62                                 datamanager.store(username, host, "accounts", nil); -- delete accounts datastore at the end
  63                         else
  64                                 local username = query:child_with_name("username");
  65                                 local password = query:child_with_name("password");
  66                                 if username and password then
  67                                         -- FIXME shouldn't use table.concat
  68                                         username = nodeprep(table.concat(username));
  69                                         password = table.concat(password);
  70                                         if username == session.username then
  71                                                 if usermanager_create_user(username, password, session.host) then -- password change -- TODO is this the right way?
  72                                                         session.send(st.reply(stanza));
  73                                                 else
  74                                                         -- TODO unable to write file, file may be locked, etc, what's the correct error?
  75                                                         session.send(st.error_reply(stanza, "wait", "internal-server-error"));
  76                                                 end
  77                                         else
  78                                                 session.send(st.error_reply(stanza, "modify", "bad-request"));
  79                                         end
  80                                 else
  81                                         session.send(st.error_reply(stanza, "modify", "bad-request"));
  82                                 end
  83                         end
  84                 end
  85         else
  86                 session.send(st.error_reply(stanza, "cancel", "service-unavailable"));
  87         end;
  88 end);
  89
  90 local recent_ips = {};
  91 local min_seconds_between_registrations = config.get(module.host, "core", "min_seconds_between_registrations");
  92 local whitelist_only = config.get(module.host, "core", "whitelist_registration_only");
  93 local whitelisted_ips = config.get(module.host, "core", "registration_whitelist") or { "127.0.0.1" };
  94 local blacklisted_ips = config.get(module.host, "core", "registration_blacklist") or {};
  95
  96 for _, ip in ipairs(whitelisted_ips) do whitelisted_ips[ip] = true; end
  97 for _, ip in ipairs(blacklisted_ips) do blacklisted_ips[ip] = true; end
  98
  99 module:add_iq_handler("c2s_unauthed", "jabber:iq:register", function (session, stanza)
 100         if config.get(module.host, "core", "allow_registration") == false then
 101                 session.send(st.error_reply(stanza, "cancel", "service-unavailable"));
 102         elseif stanza.tags[1].name == "query" then
 103                 local query = stanza.tags[1];
 104                 if stanza.attr.type == "get" then
 105                         local reply = st.reply(stanza);
 106                         reply:tag("query", {xmlns = "jabber:iq:register"})
 107                                 :tag("instructions"):text("Choose a username and password for use with this service."):up()
 108                                 :tag("username"):up()
 109                                 :tag("password"):up();
 110                         session.send(reply);
 111                 elseif stanza.attr.type == "set" then
 112                         if query.tags[1] and query.tags[1].name == "remove" then
 113                                 session.send(st.error_reply(stanza, "auth", "registration-required"));
 114                         else
 115                                 local username = query:child_with_name("username");
 116                                 local password = query:child_with_name("password");
 117                                 if username and password then
 118                                         -- Check that the user is not blacklisted or registering too often
 119                                         if blacklisted_ips[session.ip] or (whitelist_only and not whitelisted_ips[session.ip]) then
 120                                                         session.send(st.error_reply(stanza, "cancel", "not-acceptable"));
 121                                                         return;
 122                                         elseif min_seconds_between_registrations and not whitelisted_ips[session.ip] then
 123                                                 if not recent_ips[session.ip] then
 124                                                         recent_ips[session.ip] = { time = os_time(), count = 1 };
 125                                                 else
 126
 127                                                         local ip = recent_ips[session.ip];
 128                                                         ip.count = ip.count + 1;
 129
 130                                                         if os_time() - ip.time < min_seconds_between_registrations then
 131                                                                 ip.time = os_time();
 132                                                                 session.send(st.error_reply(stanza, "cancel", "not-acceptable"));
 133                                                                 return;
 134                                                         end
 135                                                         ip.time = os_time();
 136                                                 end
 137                                         end
 138                                         -- FIXME shouldn't use table.concat
 139                                         username = nodeprep(table.concat(username));
 140                                         password = table.concat(password);
 141                                         if usermanager_user_exists(username, session.host) then
 142                                                 session.send(st.error_reply(stanza, "cancel", "conflict"));
 143                                         else
 144                                                 if usermanager_create_user(username, password, session.host) then
 145                                                         session.send(st.reply(stanza)); -- user created!
 146                                                 else
 147                                                         -- TODO unable to write file, file may be locked, etc, what's the correct error?
 148                                                         session.send(st.error_reply(stanza, "wait", "internal-server-error"));
 149                                                 end
 150                                         end
 151                                 else
 152                                         session.send(st.error_reply(stanza, "modify", "not-acceptable"));
 153                                 end
 154                         end
 155                 end
 156         else
 157                 session.send(st.error_reply(stanza, "cancel", "service-unavailable"));
 158         end;
 159 end);
 160