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() return nil, "method not implemented"; 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}, {
  30                 __index = function(self, method) return dummy; end
  31         });
  32 end
  33
  34 local provider_mt = { __index = new_null_provider() };
  35
  36 function initialize_host(host)
  37         local host_session = hosts[host];
  38         if host_session.type ~= "local" then return; end
  39
  40         host_session.events.add_handler("item-added/auth-provider", function (event)
  41                 local provider = event.item;
  42                 local auth_provider = config.get(host, "core", "authentication") or default_provider;
  43                 if config.get(host, "core", "anonymous_login") then auth_provider = "anonymous"; end -- COMPAT 0.7
  44                 if provider.name == auth_provider then
  45                         host_session.users = setmetatable(provider, provider_mt);
  46                 end
  47                 if host_session.users ~= nil and host_session.users.name ~= nil then
  48                         log("debug", "host '%s' now set to use user provider '%s'", host, host_session.users.name);
  49                 end
  50         end);
  51         host_session.events.add_handler("item-removed/auth-provider", function (event)
  52                 local provider = event.item;
  53                 if host_session.users == provider then
  54                         host_session.users = new_null_provider();
  55                 end
  56         end);
  57         host_session.users = new_null_provider(); -- Start with the default usermanager provider
  58         local auth_provider = config.get(host, "core", "authentication") or default_provider;
  59         if config.get(host, "core", "anonymous_login") then auth_provider = "anonymous"; end -- COMPAT 0.7
  60         if auth_provider ~= "null" then
  61                 modulemanager.load(host, "auth_"..auth_provider);
  62         end
  63 end;
  64 prosody.events.add_handler("host-activated", initialize_host, 100);
  65
  66 function test_password(username, host, password)
  67         return hosts[host].users.test_password(username, password);
  68 end
  69
  70 function get_password(username, host)
  71         return hosts[host].users.get_password(username);
  72 end
  73
  74 function set_password(username, password, host)
  75         return hosts[host].users.set_password(username, password);
  76 end
  77
  78 function user_exists(username, host)
  79         return hosts[host].users.user_exists(username);
  80 end
  81
  82 function create_user(username, password, host)
  83         return hosts[host].users.create_user(username, password);
  84 end
  85
  86 function delete_user(username, host)
  87         return hosts[host].users.delete_user(username);
  88 end
  89
  90 function get_sasl_handler(host)
  91         return hosts[host].users.get_sasl_handler();
  92 end
  93
  94 function get_provider(host)
  95         return hosts[host].users;
  96 end
  97
  98 function is_admin(jid, host)
  99         local is_admin;
 100         jid = jid_bare(jid);
 101         host = host or "*";
 102
 103         local host_admins = config.get(host, "core", "admins");
 104         local global_admins = config.get("*", "core", "admins");
 105
 106         if host_admins and host_admins ~= global_admins then
 107                 if type(host_admins) == "table" then
 108                         for _,admin in ipairs(host_admins) do
 109                                 if admin == jid then
 110                                         is_admin = true;
 111                                         break;
 112                                 end
 113                         end
 114                 elseif host_admins then
 115                         log("error", "Option 'admins' for host '%s' is not a list", host);
 116                 end
 117         end
 118
 119         if not is_admin and global_admins then
 120                 if type(global_admins) == "table" then
 121                         for _,admin in ipairs(global_admins) do
 122                                 if admin == jid then
 123                                         is_admin = true;
 124                                         break;
 125                                 end
 126                         end
 127                 elseif global_admins then
 128                         log("error", "Global option 'admins' is not a list");
 129                 end
 130         end
 131
 132         -- Still not an admin, check with auth provider
 133         if not is_admin and host ~= "*" and hosts[host].users and hosts[host].users.is_admin then
 134                 is_admin = hosts[host].users.is_admin(jid);
 135         end
 136         return is_admin or false;
 137 end
 138
 139 return _M;