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 jid_prep = require "util.jid".prep;
  15 local config = require "core.configmanager";
  16 local hosts = hosts;
  17 local sasl_new = require "util.sasl".new;
  18
  19 local prosody = _G.prosody;
  20
  21 local setmetatable = setmetatable;
  22
  23 local default_provider = "internal_plain";
  24
  25 module "usermanager"
  26
  27 function new_null_provider()
  28         local function dummy() return nil, "method not implemented"; end;
  29         local function dummy_get_sasl_handler() return sasl_new(nil, {}); end
  30         return setmetatable({name = "null", get_sasl_handler = dummy_get_sasl_handler}, {
  31                 __index = function(self, method) return dummy; end
  32         });
  33 end
  34
  35 local provider_mt = { __index = new_null_provider() };
  36
  37 function initialize_host(host)
  38         local host_session = hosts[host];
  39         if host_session.type ~= "local" then return; end
  40
  41         host_session.events.add_handler("item-added/auth-provider", function (event)
  42                 local provider = event.item;
  43                 local auth_provider = config.get(host, "core", "authentication") or default_provider;
  44                 if config.get(host, "core", "anonymous_login") then auth_provider = "anonymous"; end -- COMPAT 0.7
  45                 if provider.name == auth_provider then
  46                         host_session.users = setmetatable(provider, provider_mt);
  47                 end
  48                 if host_session.users ~= nil and host_session.users.name ~= nil then
  49                         log("debug", "host '%s' now set to use user provider '%s'", host, host_session.users.name);
  50                 end
  51         end);
  52         host_session.events.add_handler("item-removed/auth-provider", function (event)
  53                 local provider = event.item;
  54                 if host_session.users == provider then
  55                         host_session.users = new_null_provider();
  56                 end
  57         end);
  58         host_session.users = new_null_provider(); -- Start with the default usermanager provider
  59         local auth_provider = config.get(host, "core", "authentication") or default_provider;
  60         if config.get(host, "core", "anonymous_login") then auth_provider = "anonymous"; end -- COMPAT 0.7
  61         if auth_provider ~= "null" then
  62                 modulemanager.load(host, "auth_"..auth_provider);
  63         end
  64 end;
  65 prosody.events.add_handler("host-activated", initialize_host, 100);
  66
  67 function test_password(username, host, password)
  68         return hosts[host].users.test_password(username, password);
  69 end
  70
  71 function get_password(username, host)
  72         return hosts[host].users.get_password(username);
  73 end
  74
  75 function set_password(username, password, host)
  76         return hosts[host].users.set_password(username, password);
  77 end
  78
  79 function user_exists(username, host)
  80         return hosts[host].users.user_exists(username);
  81 end
  82
  83 function create_user(username, password, host)
  84         return hosts[host].users.create_user(username, password);
  85 end
  86
  87 function delete_user(username, host)
  88         return hosts[host].users.delete_user(username);
  89 end
  90
  91 function get_sasl_handler(host)
  92         return hosts[host].users.get_sasl_handler();
  93 end
  94
  95 function get_provider(host)
  96         return hosts[host].users;
  97 end
  98
  99 function is_admin(jid, host)
 100         if host and not hosts[host] then return false; end
 101         if type(jid) ~= "string" then return false; end
 102
 103         local is_admin;
 104         jid = jid_bare(jid);
 105         host = host or "*";
 106
 107         local host_admins = config.get(host, "core", "admins");
 108         local global_admins = config.get("*", "core", "admins");
 109
 110         if host_admins and host_admins ~= global_admins then
 111                 if type(host_admins) == "table" then
 112                         for _,admin in ipairs(host_admins) do
 113                                 if jid_prep(admin) == jid then
 114                                         is_admin = true;
 115                                         break;
 116                                 end
 117                         end
 118                 elseif host_admins then
 119                         log("error", "Option 'admins' for host '%s' is not a list", host);
 120                 end
 121         end
 122
 123         if not is_admin and global_admins then
 124                 if type(global_admins) == "table" then
 125                         for _,admin in ipairs(global_admins) do
 126                                 if jid_prep(admin) == jid then
 127                                         is_admin = true;
 128                                         break;
 129                                 end
 130                         end
 131                 elseif global_admins then
 132                         log("error", "Global option 'admins' is not a list");
 133                 end
 134         end
 135
 136         -- Still not an admin, check with auth provider
 137         if not is_admin and host ~= "*" and hosts[host].users and hosts[host].users.is_admin then
 138                 is_admin = hosts[host].users.is_admin(jid);
 139         end
 140         return is_admin or false;
 141 end
 142
 143 return _M;