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