diff options
Diffstat (limited to 'plugins/mod_auth_internal_hashed.lua')
| -rw-r--r-- | plugins/mod_auth_internal_hashed.lua | 151 |
1 files changed, 151 insertions, 0 deletions
diff --git a/plugins/mod_auth_internal_hashed.lua b/plugins/mod_auth_internal_hashed.lua new file mode 100644 index 00000000..9cffcc6e --- /dev/null +++ b/plugins/mod_auth_internal_hashed.lua @@ -0,0 +1,151 @@ +-- 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 saltedPasswordSHA1 = require "util.sasl.scram".saltedPasswordSHA1; +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; + +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, binpass = saltedPasswordSHA1(password, credentials.salt, credentials.iteration_count); + local hexpass = binpass:gsub(".", function (c) return ("%02x"):format(c:byte()); end); + + if valid and hexpass == credentials.hashpass 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, binpass = saltedPasswordSHA1(password, account.salt, account.iteration_count); + local hexpass = binpass:gsub(".", function (c) return ("%02x"):format(c:byte()); end); + account.hashpass = hexpass; + + 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, binpass = saltedPasswordSHA1(password, salt, iteration_count); + local hexpass = binpass:gsub(".", function (c) return ("%02x"):format(c:byte()); end); + return datamanager.store(username, host, "accounts", {hashpass = hexpass, 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 salted_password, iteration_count, salt = credentials.hashpass, credentials.iteration_count, credentials.salt; + salted_password = salted_password and salted_password:gsub("..", function(x) return string.char(tonumber(x, 16)); end); + return salted_password, 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)); + |