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 sasl_new = require "util.sasl".new;
  17 local storagemanager = require "core.storagemanager";
  18
  19 local prosody = _G.prosody;
  20 local hosts = prosody.hosts;
  21
  22 local setmetatable = setmetatable;
  23
  24 local default_provider = "internal_plain";
  25
  26 local _ENV = nil;
  27 -- luacheck: std none
  28
  29 local 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 --luacheck: ignore 212
  34         });
  35 end
  36
  37 local provider_mt = { __index = new_null_provider() };
  38
  39 local 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 local function test_password(username, host, password)
  73         return hosts[host].users.test_password(username, password);
  74 end
  75
  76 local function get_password(username, host)
  77         return hosts[host].users.get_password(username);
  78 end
  79
  80 local function set_password(username, password, host, resource)
  81         local ok, err = hosts[host].users.set_password(username, password);
  82         if ok then
  83                 prosody.events.fire_event("user-password-changed", { username = username, host = host, resource = resource });
  84         end
  85         return ok, err;
  86 end
  87
  88 local function user_exists(username, host)
  89         if hosts[host].sessions[username] then return true; end
  90         return hosts[host].users.user_exists(username);
  91 end
  92
  93 local function create_user(username, password, host)
  94         return hosts[host].users.create_user(username, password);
  95 end
  96
  97 local function delete_user(username, host)
  98         local ok, err = hosts[host].users.delete_user(username);
  99         if not ok then return nil, err; end
 100         prosody.events.fire_event("user-deleted", { username = username, host = host });
 101         return storagemanager.purge(username, host);
 102 end
 103
 104 local function users(host)
 105         return hosts[host].users.users();
 106 end
 107
 108 local function get_sasl_handler(host, session)
 109         return hosts[host].users.get_sasl_handler(session);
 110 end
 111
 112 local function get_provider(host)
 113         return hosts[host].users;
 114 end
 115
 116 local function is_admin(jid, host)
 117         if host and not hosts[host] then return false; end
 118         if type(jid) ~= "string" then return false; end
 119
 120         jid = jid_bare(jid);
 121         host = host or "*";
 122
 123         local host_admins = config.get(host, "admins");
 124         local global_admins = config.get("*", "admins");
 125
 126         if host_admins and host_admins ~= global_admins then
 127                 if type(host_admins) == "table" then
 128                         for _,admin in ipairs(host_admins) do
 129                                 if jid_prep(admin) == jid then
 130                                         return true;
 131                                 end
 132                         end
 133                 elseif host_admins then
 134                         log("error", "Option 'admins' for host '%s' is not a list", host);
 135                 end
 136         end
 137
 138         if global_admins then
 139                 if type(global_admins) == "table" then
 140                         for _,admin in ipairs(global_admins) do
 141                                 if jid_prep(admin) == jid then
 142                                         return true;
 143                                 end
 144                         end
 145                 elseif global_admins then
 146                         log("error", "Global option 'admins' is not a list");
 147                 end
 148         end
 149
 150         -- Still not an admin, check with auth provider
 151         if host ~= "*" and hosts[host].users and hosts[host].users.is_admin then
 152                 return hosts[host].users.is_admin(jid);
 153         end
 154         return false;
 155 end
 156
 157 return {
 158         new_null_provider = new_null_provider;
 159         initialize_host = initialize_host;
 160         test_password = test_password;
 161         get_password = get_password;
 162         set_password = set_password;
 163         user_exists = user_exists;
 164         create_user = create_user;
 165         delete_user = delete_user;
 166         users = users;
 167         get_sasl_handler = get_sasl_handler;
 168         get_provider = get_provider;
 169         is_admin = is_admin;
 170 };