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plugins/mod_auth_internal_hashed.lua @ 3209:cbceb398c1e4
Merge with tip.
author | Tobias Markmann <tm@ayena.de> |
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date | Tue, 08 Jun 2010 20:39:27 +0200 |
parent | 3208:4b660bf61048 |
child | 3210:5e51f8a7179b |
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-- 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("usermanager"); 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; -- TODO: remove these two lines in near future local hmac_sha1 = require "util.hmac".sha1; local sha1 = require "util.hashes".sha1; local prosody = _G.prosody; local is_cyrus = usermanager.is_cyrus; -- 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) if is_cyrus(host) then return nil, "Legacy auth not supported with Cyrus SASL."; end 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 local valid, stored_key, server_key if credentials.hexpass then -- convert hexpass to stored_key and server_key -- TODO: remove this in near future valid = true; local salted_password = credentials.hexpass:gsub("..", function(x) return string.char(tonumber(x, 16)); end); stored_key = sha1(hmac_sha1(salted_password, "Client Key")) server_key = hmac_sha1(salted_password, "Server Key"); else valid, stored_key, server_key = getAuthenticationDatabaseSHA1(password, credentials.salt, credentials.iteration_count); end local stored_key_hex = stored_key:gsub(".", function (c) return ("%02x"):format(c:byte()); end); local server_key_hex = server_key:gsub(".", function (c) return ("%02x"):format(c:byte()); end); if valid and stored_key_hex == credentials.stored_key and server_key_hex == credentials.server_key_hex then return true; else return nil, "Auth failed. Invalid username, password, or password hash information."; end end function provider.set_password(username, password) if is_cyrus(host) then return nil, "Passwords unavailable for Cyrus SASL."; end local account = datamanager.load(username, host, "accounts"); if account then if account.iteration_count == nil then account.iteration_count = iteration_count; end if account.salt == nil then account.salt = generate_uuid(); end local valid, stored_key, server_key = getAuthenticationDatabaseSHA1(password, credentials.salt, credentials.iteration_count); local stored_key_hex = stored_key:gsub(".", function (c) return ("%02x"):format(c:byte()); end); local server_key_hex = server_key:gsub(".", function (c) return ("%02x"):format(c:byte()); end); 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) if is_cyrus(host) then return true; end 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 if (account.hashpass == nil or string.len(account.hashpass) == 0) and (account.password == nil or string.len(account.password) == 0) then log("debug", "account password not set or zero-length for username '%s' at host '%s'", username, module.host); return nil, "Auth failed. Password invalid."; end return true; end function provider.create_user(username, password) if is_cyrus(host) then return nil, "Account creation/modification not available with Cyrus SASL."; end local salt = generate_uuid(); local valid, stored_key, server_key = saltedPasswordSHA1(password, salt, iteration_count); local stored_key_hex = stored_key:gsub(".", function (c) return ("%02x"):format(c:byte()); end); local server_key_hex = server_key:gsub(".", function (c) return ("%02x"):format(c:byte()); end); 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, password, realm), true; end, scram_sha_1 = function(username, realm) local credentials = datamanager.load(username, host, "accounts") or {}; if credentials.password then usermanager.set_password(username, credentials.password); credentials = datamanager.load(username, host, "accounts") or {}; 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 stored_key:gsub("..", function(x) return string.char(tonumber(x, 16)); end); server_key = server_key and server_key:gsub("..", function(x) return string.char(tonumber(x, 16)); end); return stored_key, server_key, iteration_count, salt, true; end }; return new_sasl(realm, testpass_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 module:add_item("auth-provider", new_hashpass_provider(module.host));