mod_auth_anonymous: Auth provider with support for SASL ANONYMOUS.

diff --git a/plugins/mod_auth_anonymous.lua b/plugins/mod_auth_anonymous.lua
new file mode 100644 (file)
index 0000000..e0a6a6c
--- /dev/null
+++ b/plugins/mod_auth_anonymous.lua
@@ -0,0 +1,85 @@
+-- Prosody IM
+-- Copyright (C) 2008-2010 Matthew Wild
+-- Copyright (C) 2008-2010 Waqas Hussain
+-- Copyright (C) 2010 Jeff Mitchell
+--
+-- This project is MIT/X11 licensed. Please see the
+-- COPYING file in the source package for more information.
+--
+
+local log = require "util.logger".init("usermanager");
+local type = type;
+local ipairs = ipairs;
+local jid_bare = require "util.jid".bare;
+local config = require "core.configmanager";
+local new_sasl = require "util.sasl".new;
+local datamanager = require "util.datamanager";
+
+function new_default_provider(host)
+       local provider = { name = "anonymous" };
+
+       function provider.test_password(username, password)
+               return nil, "Password based auth not supported.";
+       end
+
+       function provider.get_password(username)
+               return nil, "Password not available.";
+       end
+       
+       function provider.set_password(username, password)
+               return nil, "Password based auth not supported.";
+       end
+
+       function provider.user_exists(username)
+               return nil, "Only anonymous users are supported."; -- FIXME check if anonymous user is connected?
+       end
+
+       function provider.create_user(username, password)
+               return nil, "Account creation/modification not supported."; end
+       end
+
+       function provider.get_sasl_handler()
+               local realm = module:get_option("sasl_realm") or module.host;
+               local anonymous_authentication_profile = {
+                       anonymous = function(username, realm)
+                               return true; -- for normal usage you should always return true here
+                       end
+               };
+               return new_sasl(realm, anonymous_authentication_profile);
+       end
+
+       function provider.is_admin(jid)
+               local admins = config.get(host, "core", "admins");
+               if admins ~= config.get("*", "core", "admins") and type(admins) == "table" then
+                       jid = jid_bare(jid);
+                       for _,admin in ipairs(admins) do
+                               if admin == jid then return true; end
+                       end
+               elseif admins then
+                       log("error", "Option 'admins' for host '%s' is not a table", host);
+               end
+               return is_admin(jid); -- Test whether it's a global admin instead
+       end
+       return provider;
+end
+
+local function dm_callback(username, host, datastore, data)
+       if host == module.host then
+               return false;
+       end
+       return username, host, datastore, data;
+end
+local host = hosts[module.host];
+local _saved_disallow_s2s = host.disallow_s2s;
+function module.load()
+       _saved_disallow_s2s = host.disallow_s2s;
+       host.disallow_s2s = module:get_option("disallow_s2s") ~= false;
+       datamanager.add_callback(dm_callback);
+end
+function module.unload()
+       host.disallow_s2s = _saved_disallow_s2s;
+       datamanager.remove_callback(dm_callback);
+end
+
+module:add_item("auth-provider", new_default_provider(module.host));
+