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 local storagemanager = require "core.storagemanager";
  19
  20 local prosody = _G.prosody;
  21
  22 local setmetatable = setmetatable;
  23
  24 local default_provider = "internal_plain";
  25
  26 local _ENV = nil;
  27
  28 local function new_null_provider()
  29         local function dummy() return nil, "method not implemented"; end;
  30         local function dummy_get_sasl_handler() return sasl_new(nil, {}); end
  31         return setmetatable({name = "null", get_sasl_handler = dummy_get_sasl_handler}, {
  32                 __index = function(self, method) return dummy; end --luacheck: ignore 212
  33         });
  34 end
  35
  36 local provider_mt = { __index = new_null_provider() };
  37
  38 local function initialize_host(host)
  39         local host_session = hosts[host];
  40         if host_session.type ~= "local" then return; end
  41
  42         host_session.events.add_handler("item-added/auth-provider", function (event)
  43                 local provider = event.item;
  44                 local auth_provider = config.get(host, "authentication") or default_provider;
  45                 if config.get(host, "anonymous_login") then
  46                         log("error", "Deprecated config option 'anonymous_login'. Use authentication = 'anonymous' instead.");
  47                         auth_provider = "anonymous";
  48                 end -- COMPAT 0.7
  49                 if provider.name == auth_provider then
  50                         host_session.users = setmetatable(provider, provider_mt);
  51                 end
  52                 if host_session.users ~= nil and host_session.users.name ~= nil then
  53                         log("debug", "Host '%s' now set to use user provider '%s'", host, host_session.users.name);
  54                 end
  55         end);
  56         host_session.events.add_handler("item-removed/auth-provider", function (event)
  57                 local provider = event.item;
  58                 if host_session.users == provider then
  59                         host_session.users = new_null_provider();
  60                 end
  61         end);
  62         host_session.users = new_null_provider(); -- Start with the default usermanager provider
  63         local auth_provider = config.get(host, "authentication") or default_provider;
  64         if config.get(host, "anonymous_login") then auth_provider = "anonymous"; end -- COMPAT 0.7
  65         if auth_provider ~= "null" then
  66                 modulemanager.load(host, "auth_"..auth_provider);
  67         end
  68 end;
  69 prosody.events.add_handler("host-activated", initialize_host, 100);
  70
  71 local function test_password(username, host, password)
  72         return hosts[host].users.test_password(username, password);
  73 end
  74
  75 local function get_password(username, host)
  76         return hosts[host].users.get_password(username);
  77 end
  78
  79 local function set_password(username, password, host)
  80         return hosts[host].users.set_password(username, password);
  81 end
  82
  83 local function user_exists(username, host)
  84         if hosts[host].sessions[username] then return true; end
  85         return hosts[host].users.user_exists(username);
  86 end
  87
  88 local function create_user(username, password, host)
  89         return hosts[host].users.create_user(username, password);
  90 end
  91
  92 local 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 local function users(host)
 100         return hosts[host].users.users();
 101 end
 102
 103 local function get_sasl_handler(host, session)
 104         return hosts[host].users.get_sasl_handler(session);
 105 end
 106
 107 local function get_provider(host)
 108         return hosts[host].users;
 109 end
 110
 111 local 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         jid = jid_bare(jid);
 116         host = host or "*";
 117
 118         local host_admins = config.get(host, "admins");
 119         local global_admins = config.get("*", "admins");
 120
 121         if host_admins and host_admins ~= global_admins then
 122                 if type(host_admins) == "table" then
 123                         for _,admin in ipairs(host_admins) do
 124                                 if jid_prep(admin) == jid then
 125                                         return true;
 126                                 end
 127                         end
 128                 elseif host_admins then
 129                         log("error", "Option 'admins' for host '%s' is not a list", host);
 130                 end
 131         end
 132
 133         if global_admins then
 134                 if type(global_admins) == "table" then
 135                         for _,admin in ipairs(global_admins) do
 136                                 if jid_prep(admin) == jid then
 137                                         return true;
 138                                 end
 139                         end
 140                 elseif global_admins then
 141                         log("error", "Global option 'admins' is not a list");
 142                 end
 143         end
 144
 145         -- Still not an admin, check with auth provider
 146         if host ~= "*" and hosts[host].users and hosts[host].users.is_admin then
 147                 return hosts[host].users.is_admin(jid);
 148         end
 149         return false;
 150 end
 151
 152 return {
 153         new_null_provider = new_null_provider;
 154         initialize_host = initialize_host;
 155         test_password = test_password;
 156         get_password = get_password;
 157         set_password = set_password;
 158         user_exists = user_exists;
 159         create_user = create_user;
 160         delete_user = delete_user;
 161         users = users;
 162         get_sasl_handler = get_sasl_handler;
 163         get_provider = get_provider;
 164         is_admin = is_admin;
 165 };