core/usermanager.lua

   1 -- Prosody IM
   2 -- Copyright (C) 2008-2010 Matthew Wild
   3 -- Copyright (C) 2008-2010 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 local datamanager = require "util.datamanager";
  10 local modulemanager = require "core.modulemanager";
  11 local log = require "util.logger".init("usermanager");
  12 local type = type;
  13 local error = error;
  14 local ipairs = ipairs;
  15 local hashes = require "util.hashes";
  16 local jid_bare = require "util.jid".bare;
  17 local config = require "core.configmanager";
  18 local hosts = hosts;
  19 local sasl_new = require "util.sasl".new;
  20
  21 local prosody = _G.prosody;
  22
  23 local setmetatable = setmetatable;
  24
  25 local default_provider = "internal_plain";
  26
  27 module "usermanager"
  28
  29 function new_null_provider()
  30         local function dummy() end;
  31         local function dummy_get_sasl_handler() return sasl_new(nil, {}); end
  32         return setmetatable({name = "null", get_sasl_handler = dummy_get_sasl_handler}, { __index = function() return dummy; end });
  33 end
  34
  35 function initialize_host(host)
  36         local host_session = hosts[host];
  37         host_session.events.add_handler("item-added/auth-provider", function (event)
  38                 local provider = event.item;
  39                 local auth_provider = config.get(host, "core", "authentication") or default_provider;
  40                 if provider.name == auth_provider then
  41                         host_session.users = provider;
  42                 end
  43                 if host_session.users ~= nil and host_session.users.name ~= nil then
  44                         log("debug", "host '%s' now set to use user provider '%s'", host, host_session.users.name);
  45                 end
  46         end);
  47         host_session.events.add_handler("item-removed/auth-provider", function (event)
  48                 local provider = event.item;
  49                 if host_session.users == provider then
  50                         host_session.users = new_null_provider();
  51                 end
  52         end);
  53         host_session.users = new_null_provider(); -- Start with the default usermanager provider
  54         local auth_provider = config.get(host, "core", "authentication") or default_provider;
  55         if auth_provider ~= "null" then
  56                 modulemanager.load(host, "auth_"..auth_provider);
  57         end
  58 end;
  59 prosody.events.add_handler("host-activated", initialize_host, 100);
  60 prosody.events.add_handler("component-activated", initialize_host, 100);
  61
  62 function test_password(username, host, password)
  63         return hosts[host].users.test_password(username, password);
  64 end
  65
  66 function get_password(username, host)
  67         return hosts[host].users.get_password(username);
  68 end
  69
  70 function set_password(username, password, host)
  71         return hosts[host].users.set_password(username, password);
  72 end
  73
  74 function user_exists(username, host)
  75         return hosts[host].users.user_exists(username);
  76 end
  77
  78 function create_user(username, password, host)
  79         return hosts[host].users.create_user(username, password);
  80 end
  81
  82 function get_sasl_handler(host)
  83         return hosts[host].users.get_sasl_handler();
  84 end
  85
  86 function get_provider(host)
  87         return hosts[host].users;
  88 end
  89
  90 function is_admin(jid, host)
  91         local is_admin;
  92         jid = jid_bare(jid);
  93         host = host or "*";
  94
  95         local host_admins = config.get(host, "core", "admins");
  96         local global_admins = config.get("*", "core", "admins");
  97
  98         if host_admins and host_admins ~= global_admins then
  99                 if type(host_admins) == "table" then
 100                         for _,admin in ipairs(host_admins) do
 101                                 if admin == jid then
 102                                         is_admin = true;
 103                                         break;
 104                                 end
 105                         end
 106                 elseif host_admins then
 107                         log("error", "Option 'admins' for host '%s' is not a list", host);
 108                 end
 109         end
 110
 111         if not is_admin and global_admins then
 112                 if type(global_admins) == "table" then
 113                         for _,admin in ipairs(global_admins) do
 114                                 if admin == jid then
 115                                         is_admin = true;
 116                                         break;
 117                                 end
 118                         end
 119                 elseif global_admins then
 120                         log("error", "Global option 'admins' is not a list");
 121                 end
 122         end
 123
 124         -- Still not an admin, check with auth provider
 125         if not is_admin and host ~= "*" and hosts[host].users.is_admin then
 126                 is_admin = hosts[host].users.is_admin(jid);
 127         end
 128         return is_admin or false;
 129 end
 130
 131 return _M;