Fri, 17 Dec 2010 17:28:05 +0100
util.stanza: Iterate on childtags instead of all childs.
-- 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 datamanager = require "util.datamanager"; local log = require "util.logger".init("auth_internal_hashed"); local type = type; local error = error; local ipairs = ipairs; local hashes = require "util.hashes"; local jid_bare = require "util.jid".bare; local getAuthenticationDatabaseSHA1 = require "util.sasl.scram".getAuthenticationDatabaseSHA1; local config = require "core.configmanager"; local usermanager = require "core.usermanager"; local generate_uuid = require "util.uuid".generate; local new_sasl = require "util.sasl".new; local nodeprep = require "util.encodings".stringprep.nodeprep; local hosts = hosts; -- COMPAT w/old trunk: remove these two lines before 0.8 release local hmac_sha1 = require "util.hmac".sha1; local sha1 = require "util.hashes".sha1; local to_hex; do local function replace_byte_with_hex(byte) return ("%02x"):format(byte:byte()); end function to_hex(binary_string) return binary_string:gsub(".", replace_byte_with_hex); end end local from_hex; do local function replace_hex_with_byte(hex) return string.char(tonumber(hex, 16)); end function from_hex(hex_string) return hex_string:gsub("..", replace_hex_with_byte); end end local prosody = _G.prosody; -- Default; can be set per-user local iteration_count = 4096; function new_hashpass_provider(host) local provider = { name = "internal_hashed" }; log("debug", "initializing hashpass authentication provider for host '%s'", host); function provider.test_password(username, password) local credentials = datamanager.load(username, host, "accounts") or {}; if credentials.password ~= nil and string.len(credentials.password) ~= 0 then if credentials.password ~= password then return nil, "Auth failed. Provided password is incorrect."; end if provider.set_password(username, credentials.password) == nil then return nil, "Auth failed. Could not set hashed password from plaintext."; else return true; end end 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 -- convert hexpass to stored_key and server_key -- COMPAT w/old trunk: remove before 0.8 release if credentials.hashpass then local salted_password = from_hex(credentials.hashpass); credentials.stored_key = sha1(hmac_sha1(salted_password, "Client Key"), true); credentials.server_key = to_hex(hmac_sha1(salted_password, "Server Key")); credentials.hashpass = nil datamanager.store(username, host, "accounts", credentials); 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 return nil, "Auth failed. Invalid username, password, or password hash information."; end end function provider.set_password(username, password) local account = datamanager.load(username, host, "accounts"); if account then account.salt = account.salt or generate_uuid(); account.iteration_count = account.iteration_count or 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 account.password = nil; return datamanager.store(username, host, "accounts", account); end return nil, "Account not available."; end function provider.user_exists(username) local account = datamanager.load(username, host, "accounts"); if not account then log("debug", "account not found for username '%s' at host '%s'", username, module.host); return nil, "Auth failed. Invalid username"; end return true; end function provider.create_user(username, password) if password == nil then return datamanager.store(username, host, "accounts", {}); end local salt = generate_uuid(); local valid, stored_key, server_key = getAuthenticationDatabaseSHA1(password, salt, iteration_count); local stored_key_hex = to_hex(stored_key); local server_key_hex = to_hex(server_key); return datamanager.store(username, host, "accounts", {stored_key = stored_key_hex, server_key = server_key_hex, salt = salt, iteration_count = iteration_count}); end function provider.get_sasl_handler() local realm = module:get_option("sasl_realm") or module.host; local testpass_authentication_profile = { plain_test = function(username, password, realm) local prepped_username = nodeprep(username); if not prepped_username then log("debug", "NODEprep failed on username: %s", username); return "", nil; end return usermanager.test_password(prepped_username, realm, password), true; end, scram_sha_1 = function(username, realm) local credentials = datamanager.load(username, host, "accounts"); if not credentials then return; end if credentials.password then usermanager.set_password(username, credentials.password, host); credentials = datamanager.load(username, host, "accounts"); if not credentials then return; end end -- convert hexpass to stored_key and server_key -- COMPAT w/old trunk: remove before 0.8 release if credentials.hashpass then local salted_password = from_hex(credentials.hashpass); credentials.stored_key = sha1(hmac_sha1(salted_password, "Client Key"), true); credentials.server_key = to_hex(hmac_sha1(salted_password, "Server Key")); credentials.hashpass = nil datamanager.store(username, host, "accounts", credentials); 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); return stored_key, server_key, iteration_count, salt, true; end }; return new_sasl(realm, testpass_authentication_profile); end return provider; end module:add_item("auth-provider", new_hashpass_provider(module.host));