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