plugins/mod_register.lua

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