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 pairs = pairs;
  14 local jid_bare = require "util.jid".bare;
  15 local jid_prep = require "util.jid".prep;
  16 local config = require "core.configmanager";
  17 local hosts = hosts;
  18 local sasl_new = require "util.sasl".new;
  19 local storagemanager = require "core.storagemanager";
  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() return nil, "method not implemented"; 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}, {
  33                 __index = function(self, method) return dummy; end
  34         });
  35 end
  36
  37 local provider_mt = { __index = new_null_provider() };
  38
  39 function initialize_host(host)
  40         local host_session = hosts[host];
  41         if host_session.type ~= "local" then return; end
  42
  43         host_session.events.add_handler("item-added/auth-provider", function (event)
  44                 local provider = event.item;
  45                 local auth_provider = config.get(host, "authentication") or default_provider;
  46                 if config.get(host, "anonymous_login") then
  47                         log("error", "Deprecated config option 'anonymous_login'. Use authentication = 'anonymous' instead.");
  48                         auth_provider = "anonymous";
  49                 end -- COMPAT 0.7
  50                 if provider.name == auth_provider then
  51                         host_session.users = setmetatable(provider, provider_mt);
  52                 end
  53                 if host_session.users ~= nil and host_session.users.name ~= nil then
  54                         log("debug", "host '%s' now set to use user provider '%s'", host, host_session.users.name);
  55                 end
  56         end);
  57         host_session.events.add_handler("item-removed/auth-provider", function (event)
  58                 local provider = event.item;
  59                 if host_session.users == provider then
  60                         host_session.users = new_null_provider();
  61                 end
  62         end);
  63         host_session.users = new_null_provider(); -- Start with the default usermanager provider
  64         local auth_provider = config.get(host, "authentication") or default_provider;
  65         if config.get(host, "anonymous_login") then auth_provider = "anonymous"; end -- COMPAT 0.7
  66         if auth_provider ~= "null" then
  67                 modulemanager.load(host, "auth_"..auth_provider);
  68         end
  69 end;
  70 prosody.events.add_handler("host-activated", initialize_host, 100);
  71
  72 function test_password(username, host, password)
  73         return hosts[host].users.test_password(username, password);
  74 end
  75
  76 function get_password(username, host)
  77         return hosts[host].users.get_password(username);
  78 end
  79
  80 function set_password(username, password, host)
  81         return hosts[host].users.set_password(username, password);
  82 end
  83
  84 function user_exists(username, host)
  85         return hosts[host].users.user_exists(username);
  86 end
  87
  88 function create_user(username, password, host)
  89         return hosts[host].users.create_user(username, password);
  90 end
  91
  92 function delete_user(username, host)
  93         local ok, err = hosts[host].users.delete_user(username);
  94         if not ok then return nil, err; end
  95         prosody.events.fire_event("user-deleted", { username = username, host = host });
  96         return storagemanager.purge(username, host);
  97 end
  98
  99 function users(host)
 100         return hosts[host].users.users();
 101 end
 102
 103 function get_sasl_handler(host, session)
 104         return hosts[host].users.get_sasl_handler(session);
 105 end
 106
 107 function get_provider(host)
 108         return hosts[host].users;
 109 end
 110
 111 function is_admin(jid, host)
 112         if host and not hosts[host] then return false; end
 113         if type(jid) ~= "string" then return false; end
 114
 115         local is_admin;
 116         jid = jid_bare(jid);
 117         host = host or "*";
 118
 119         local host_admins = config.get(host, "admins");
 120         local global_admins = config.get("*", "admins");
 121
 122         if host_admins and host_admins ~= global_admins then
 123                 if type(host_admins) == "table" then
 124                         for _,admin in ipairs(host_admins) do
 125                                 if jid_prep(admin) == jid then
 126                                         is_admin = true;
 127                                         break;
 128                                 end
 129                         end
 130                 elseif host_admins then
 131                         log("error", "Option 'admins' for host '%s' is not a list", host);
 132                 end
 133         end
 134
 135         if not is_admin and global_admins then
 136                 if type(global_admins) == "table" then
 137                         for _,admin in ipairs(global_admins) do
 138                                 if jid_prep(admin) == jid then
 139                                         is_admin = true;
 140                                         break;
 141                                 end
 142                         end
 143                 elseif global_admins then
 144                         log("error", "Global option 'admins' is not a list");
 145                 end
 146         end
 147
 148         -- Still not an admin, check with auth provider
 149         if not is_admin and host ~= "*" and hosts[host].users and hosts[host].users.is_admin then
 150                 is_admin = hosts[host].users.is_admin(jid);
 151         end
 152         return is_admin or false;
 153 end
 154
 155 return _M;