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mod_auth_ldap/mod_auth_ldap.lua @ 1196:f45ca6edc159
mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
author | Kim Alvefur <zash@zash.se> |
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date | Thu, 26 Sep 2013 13:43:27 +0200 |
parent | 1192:db4085433e5f |
child | 1221:3e5f8e844325 |
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local new_sasl = require "util.sasl".new; local log = require "util.logger".init("auth_ldap"); local ldap_server = module:get_option_string("ldap_server", "localhost"); local ldap_rootdn = module:get_option_string("ldap_rootdn", ""); local ldap_password = module:get_option_string("ldap_password", ""); local ldap_tls = module:get_option_boolean("ldap_tls"); local ldap_scope = module:get_option_string("ldap_scope", "onelevel"); local ldap_filter = module:get_option_string("ldap_filter", "(uid=%s)"); local ldap_base = assert(module:get_option_string("ldap_base"), "ldap_base is a required option for ldap"); local lualdap = require "lualdap"; local ld = assert(lualdap.open_simple(ldap_server, ldap_rootdn, ldap_password, ldap_tls)); module.unload = function() ld:close(); end local function ldap_filter_escape(s) return (s:gsub("[\\*\\(\\)\\\\%z]", function(c) return ("\\%02x"):format(c:byte()) end)); end local function get_user(username) module:log("debug", "get_user(%q)", username); return ld:search({ base = ldap_base; scope = ldap_scope; filter = ldap_filter:format(ldap_filter_escape(username)); })(); end local provider = {}; function provider.get_password(username) local dn, attr = get_user(username); if dn and attr then return attr.userPassword; end end function provider.test_password(username, password) return provider.get_password(username) == password; end function provider.user_exists(username) return not not get_user(username); end function provider.set_password(username, password) local dn, attr = get_user(username); if not dn then return nil, attr end if attr.password ~= password then ld:modify(dn, { '=', userPassword = password }); end return true end function provider.create_user(username, password) return nil, "Account creation not available with LDAP."; end function provider.get_sasl_handler() return new_sasl(module.host, { plain = function(sasl, username) local password = provider.get_password(username); if not password then return "", nil; end return password, true; end }); end module:provides("auth", provider);