2 -- Copyright (C) 2008-2010 Matthew Wild
3 -- Copyright (C) 2008-2010 Waqas Hussain
4 -- Copyright (C) 2010 Jeff Mitchell
6 -- This project is MIT/X11 licensed. Please see the
7 -- COPYING file in the source package for more information.
10 local datamanager = require "util.datamanager";
11 local log = require "util.logger".init("usermanager");
14 local ipairs = ipairs;
15 local hashes = require "util.hashes";
16 local jid_bare = require "util.jid".bare;
17 local saltedPasswordSHA1 = require "util.sasl.scram".saltedPasswordSHA1;
18 local config = require "core.configmanager";
19 local usermanager = require "core.usermanager";
20 local generate_uuid = require "util.uuid".generate;
21 local new_sasl = require "util.sasl".new;
22 local nodeprep = require "util.encodings".stringprep.nodeprep;
25 local prosody = _G.prosody;
27 local is_cyrus = usermanager.is_cyrus;
29 -- Default; can be set per-user
30 local iteration_count = 4096;
32 function new_hashpass_provider(host)
33 local provider = { name = "internal_hashed" };
34 log("debug", "initializing hashpass authentication provider for host '%s'", host);
36 function provider.test_password(username, password)
37 if is_cyrus(host) then return nil, "Legacy auth not supported with Cyrus SASL."; end
38 local credentials = datamanager.load(username, host, "accounts") or {};
40 if credentials.password ~= nil and string.len(credentials.password) ~= 0 then
41 if credentials.password ~= password then
42 return nil, "Auth failed. Provided password is incorrect.";
45 if provider.set_password(username, credentials.password) == nil then
46 return nil, "Auth failed. Could not set hashed password from plaintext.";
52 if credentials.iteration_count == nil or credentials.salt == nil or string.len(credentials.salt) == 0 then
53 return nil, "Auth failed. Stored salt and iteration count information is not complete.";
56 local valid, binpass = saltedPasswordSHA1(password, credentials.salt, credentials.iteration_count);
57 local hexpass = binpass:gsub(".", function (c) return ("%02x"):format(c:byte()); end);
59 if valid and hexpass == credentials.hashpass then
62 return nil, "Auth failed. Invalid username, password, or password hash information.";
66 function provider.set_password(username, password)
67 if is_cyrus(host) then return nil, "Passwords unavailable for Cyrus SASL."; end
68 local account = datamanager.load(username, host, "accounts");
70 if account.iteration_count == nil then
71 account.iteration_count = iteration_count;
74 if account.salt == nil then
75 account.salt = generate_uuid();
78 local valid, binpass = saltedPasswordSHA1(password, account.salt, account.iteration_count);
79 local hexpass = binpass:gsub(".", function (c) return ("%02x"):format(c:byte()); end);
80 account.hashpass = hexpass;
82 account.password = nil;
83 return datamanager.store(username, host, "accounts", account);
85 return nil, "Account not available.";
88 function provider.user_exists(username)
89 if is_cyrus(host) then return true; end
90 local account = datamanager.load(username, host, "accounts");
92 log("debug", "account not found for username '%s' at host '%s'", username, module.host);
93 return nil, "Auth failed. Invalid username";
95 if (account.hashpass == nil or string.len(account.hashpass) == 0) and (account.password == nil or string.len(account.password) == 0) then
96 log("debug", "account password not set or zero-length for username '%s' at host '%s'", username, module.host);
97 return nil, "Auth failed. Password invalid.";
102 function provider.create_user(username, password)
103 if is_cyrus(host) then return nil, "Account creation/modification not available with Cyrus SASL."; end
104 local salt = generate_uuid();
105 local valid, binpass = saltedPasswordSHA1(password, salt, iteration_count);
106 local hexpass = binpass:gsub(".", function (c) return ("%02x"):format(c:byte()); end);
107 return datamanager.store(username, host, "accounts", {hashpass = hexpass, salt = salt, iteration_count = iteration_count});
110 function provider.get_sasl_handler()
111 local realm = module:get_option("sasl_realm") or origin.host;
112 local testpass_authentication_profile = {
113 plain_test = function(username, password, realm)
114 local prepped_username = nodeprep(username);
115 if not prepped_username then
116 log("debug", "NODEprep failed on username: %s", username);
119 return usermanager.test_password(prepped_username, password, realm), true;
122 return new_sasl(realm, testpass_authentication_profile);
125 function provider.is_admin(jid)
126 local admins = config.get(host, "core", "admins");
127 if admins ~= config.get("*", "core", "admins") and type(admins) == "table" then
129 for _,admin in ipairs(admins) do
130 if admin == jid then return true; end
133 log("error", "Option 'admins' for host '%s' is not a table", host);
135 return is_admin(jid); -- Test whether it's a global admin instead
140 module:add_item("auth-provider", new_hashpass_provider(module.host));