Diff

--- a/plugins/mod_auth_internal_hashed.lua	Wed Apr 02 14:31:19 2014 +0100
+++ b/plugins/mod_auth_internal_hashed.lua	Wed Apr 02 17:41:38 2014 +0100
@@ -7,12 +7,16 @@
 -- COPYING file in the source package for more information.
 --
 
-local log = require "util.logger".init("auth_internal_hashed");
+local max = math.max;
+
 local getAuthenticationDatabaseSHA1 = require "util.sasl.scram".getAuthenticationDatabaseSHA1;
 local usermanager = require "core.usermanager";
 local generate_uuid = require "util.uuid".generate;
 local new_sasl = require "util.sasl".new;
 
+local log = module._log;
+local host = module.host;
+
 local accounts = module:open_store("accounts");
 
 local to_hex;
@@ -37,14 +41,13 @@
 
 
 -- Default; can be set per-user
-local iteration_count = 4096;
+local default_iteration_count = 4096;
 
-local host = module.host;
 -- define auth provider
 local provider = {};
-log("debug", "initializing internal_hashed authentication provider for host '%s'", host);
 
 function provider.test_password(username, password)
+	log("debug", "test password for user '%s'", username);
 	local credentials = accounts:get(username) or {};
 
 	if credentials.password ~= nil and string.len(credentials.password) ~= 0 then
@@ -62,12 +65,12 @@
 	if credentials.iteration_count == nil or credentials.salt == nil or string.len(credentials.salt) == 0 then
 		return nil, "Auth failed. Stored salt and iteration count information is not complete.";
 	end
-	
+
 	local valid, stored_key, server_key = getAuthenticationDatabaseSHA1(password, credentials.salt, credentials.iteration_count);
-	
+
 	local stored_key_hex = to_hex(stored_key);
 	local server_key_hex = to_hex(server_key);
-	
+
 	if valid and stored_key_hex == credentials.stored_key and server_key_hex == credentials.server_key then
 		return true;
 	else
@@ -76,14 +79,15 @@
 end
 
 function provider.set_password(username, password)
+	log("debug", "set_password for username '%s'", username);
 	local account = accounts:get(username);
 	if account then
-		account.salt = account.salt or generate_uuid();
-		account.iteration_count = account.iteration_count or iteration_count;
+		account.salt = generate_uuid();
+		account.iteration_count = max(account.iteration_count or 0, default_iteration_count);
 		local valid, stored_key, server_key = getAuthenticationDatabaseSHA1(password, account.salt, account.iteration_count);
 		local stored_key_hex = to_hex(stored_key);
 		local server_key_hex = to_hex(server_key);
-		
+
 		account.stored_key = stored_key_hex
 		account.server_key = server_key_hex
 
@@ -96,7 +100,7 @@
 function provider.user_exists(username)
 	local account = accounts:get(username);
 	if not account then
-		log("debug", "account not found for username '%s' at host '%s'", username, host);
+		log("debug", "account not found for username '%s'", username);
 		return nil, "Auth failed. Invalid username";
 	end
 	return true;
@@ -111,10 +115,10 @@
 		return accounts:set(username, {});
 	end
 	local salt = generate_uuid();
-	local valid, stored_key, server_key = getAuthenticationDatabaseSHA1(password, salt, iteration_count);
+	local valid, stored_key, server_key = getAuthenticationDatabaseSHA1(password, salt, default_iteration_count);
 	local stored_key_hex = to_hex(stored_key);
 	local server_key_hex = to_hex(server_key);
-	return accounts:set(username, {stored_key = stored_key_hex, server_key = server_key_hex, salt = salt, iteration_count = iteration_count});
+	return accounts:set(username, {stored_key = stored_key_hex, server_key = server_key_hex, salt = salt, iteration_count = default_iteration_count});
 end
 
 function provider.delete_user(username)
@@ -134,7 +138,7 @@
 				credentials = accounts:get(username);
 				if not credentials then return; end
 			end
-			
+
 			local stored_key, server_key, iteration_count, salt = credentials.stored_key, credentials.server_key, credentials.iteration_count, credentials.salt;
 			stored_key = stored_key and from_hex(stored_key);
 			server_key = server_key and from_hex(server_key);
@@ -143,6 +147,6 @@
 	};
 	return new_sasl(host, testpass_authentication_profile);
 end
-	
+
 module:provides("auth", provider);