plugins/mod_auth_cyrus.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 -- luacheck: ignore 212
   9
  10 local log = require "util.logger".init("auth_cyrus");
  11
  12 local usermanager_user_exists = require "core.usermanager".user_exists;
  13
  14 local cyrus_service_realm = module:get_option("cyrus_service_realm");
  15 local cyrus_service_name = module:get_option("cyrus_service_name");
  16 local cyrus_application_name = module:get_option("cyrus_application_name");
  17 local require_provisioning = module:get_option("cyrus_require_provisioning") or false;
  18 local host_fqdn = module:get_option("cyrus_server_fqdn");
  19
  20 prosody.unlock_globals(); --FIXME: Figure out why this is needed and
  21                                                   -- why cyrussasl isn't caught by the sandbox
  22 local cyrus_new = require "util.sasl_cyrus".new;
  23 prosody.lock_globals();
  24 local new_sasl = function(realm)
  25         return cyrus_new(
  26                 cyrus_service_realm or realm,
  27                 cyrus_service_name or "xmpp",
  28                 cyrus_application_name or "prosody",
  29                 host_fqdn
  30         );
  31 end
  32
  33 do -- diagnostic
  34         local list;
  35         for mechanism in pairs(new_sasl(module.host):mechanisms()) do
  36                 list = (not(list) and mechanism) or (list..", "..mechanism);
  37         end
  38         if not list then
  39                 module:log("error", "No Cyrus SASL mechanisms available");
  40         else
  41                 module:log("debug", "Available Cyrus SASL mechanisms: %s", list);
  42         end
  43 end
  44
  45 local host = module.host;
  46
  47 -- define auth provider
  48 local provider = {};
  49 log("debug", "initializing default authentication provider for host '%s'", host);
  50
  51 function provider.test_password(username, password)
  52         return nil, "Legacy auth not supported with Cyrus SASL.";
  53 end
  54
  55 function provider.get_password(username)
  56         return nil, "Passwords unavailable for Cyrus SASL.";
  57 end
  58
  59 function provider.set_password(username, password)
  60         return nil, "Passwords unavailable for Cyrus SASL.";
  61 end
  62
  63 function provider.user_exists(username)
  64         if require_provisioning then
  65                 return usermanager_user_exists(username, host);
  66         end
  67         return true;
  68 end
  69
  70 function provider.create_user(username, password)
  71         return nil, "Account creation/modification not available with Cyrus SASL.";
  72 end
  73
  74 function provider.get_sasl_handler()
  75         local handler = new_sasl(host);
  76         if require_provisioning then
  77                 function handler.require_provisioning(username)
  78                         return usermanager_user_exists(username, host);
  79                 end
  80         end
  81         return handler;
  82 end
  83
  84 module:provides("auth", provider);
  85