plugins/mod_auth_anonymous.lua

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-- Prosody IM
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-- Copyright (C) 2008-2010 Matthew Wild
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-- Copyright (C) 2008-2010 Waqas Hussain
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--
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-- This project is MIT/X11 licensed. Please see the
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-- COPYING file in the source package for more information.
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--
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local log = require "util.logger".init("auth_anonymous");
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local new_sasl = require "util.sasl".new;
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local datamanager = require "util.datamanager";
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function new_default_provider(host)
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	local provider = { name = "anonymous" };
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	function provider.test_password(username, password)
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		return nil, "Password based auth not supported.";
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	end
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	function provider.get_password(username)
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		return nil, "Password not available.";
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	end
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	function provider.set_password(username, password)
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		return nil, "Password based auth not supported.";
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	end
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	function provider.user_exists(username)
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		return nil, "Only anonymous users are supported."; -- FIXME check if anonymous user is connected?
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	end
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	function provider.create_user(username, password)
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		return nil, "Account creation/modification not supported.";
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	end
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	function provider.get_sasl_handler()
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		local realm = module:get_option("sasl_realm") or module.host;
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		local anonymous_authentication_profile = {
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			anonymous = function(sasl, username, realm)
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				return true; -- for normal usage you should always return true here
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			end
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		};
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		return new_sasl(realm, anonymous_authentication_profile);
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	end
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	return provider;
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end
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local function dm_callback(username, host, datastore, data)
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	if host == module.host then
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		return false;
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	end
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	return username, host, datastore, data;
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end
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local host = hosts[module.host];
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local _saved_disallow_s2s = host.disallow_s2s;
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function module.load()
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	_saved_disallow_s2s = host.disallow_s2s;
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	host.disallow_s2s = module:get_option("disallow_s2s") ~= false;
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	datamanager.add_callback(dm_callback);
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end
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function module.unload()
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	host.disallow_s2s = _saved_disallow_s2s;
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	datamanager.remove_callback(dm_callback);
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end
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module:add_item("auth-provider", new_default_provider(module.host));