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;
23 local prosody = _G.prosody;
25 local is_cyrus = usermanager.is_cyrus;
27 -- Default; can be set per-user
28 local iteration_count = 4096;
30 function new_hashpass_provider(host)
31 local provider = { name = "hashpass" };
32 log("debug", "initializing hashpass authentication provider for host '%s'", host);
34 function provider.test_password(username, password)
35 if is_cyrus(host) then return nil, "Legacy auth not supported with Cyrus SASL."; end
36 local credentials = datamanager.load(username, host, "accounts") or {};
38 if credentials.iteration_count == nil or credentials.salt == nil or string.len(credentials.salt) == 0 then
39 return nil, "Auth failed. Stored salt and iteration count information is not complete.";
42 if credentials.password ~= nil and string.len(credentials.password) ~= 0 then
43 if credentials.password ~= password then
44 return nil, "Auth failed. Provided password is incorrect.";
47 if provider.set_password(username, credentials.password) == nil then
48 return nil, "Auth failed. Could not set hashed password from plaintext.";
54 local valid, binpass = saltedPasswordSHA1(password, credentials.salt, credentials.iteration_count);
55 local hexpass = binpass:gsub(".", function (c) return ("%02x"):format(c:byte()); end);
57 if valid and hexpass == credentials.hashpass then
60 return nil, "Auth failed. Invalid username, password, or password hash information.";
64 function provider.get_password(username)
65 if is_cyrus(host) then return nil, "Passwords unavailable for Cyrus SASL."; end
66 local credentials = datamanager.load(username, host, "accounts") or {};
67 if(credentials.password ~= nil or (credentials.password ~= nil and string.len(credentials.password) ~= 0)) then
68 if provider.set_password(username, credentials.password) == nil then
69 return nil, "Problem setting plaintext password to hashed password.";
71 credentials = datamanager.load(username, host, "accounts");
72 return credentials.hashpass;
74 return credentials.hashpass;
77 function provider.set_password(username, password)
78 if is_cyrus(host) then return nil, "Passwords unavailable for Cyrus SASL."; end
79 local account = datamanager.load(username, host, "accounts");
81 if account.iteration_count == nil then
82 account.iteration_count = iteration_count;
85 if account.salt == nil then
86 account.salt = generate_uuid();
89 local valid, binpass = saltedPasswordSHA1(password, account.salt, account.iteration_count);
90 local hexpass = binpass:gsub(".", function (c) return ("%02x"):format(c:byte()); end);
91 account.hashpass = hexpass;
93 account.password = nil;
94 return datamanager.store(username, host, "accounts", account);
96 return nil, "Account not available.";
99 function provider.user_exists(username)
100 if is_cyrus(host) then return true; end
101 local account = datamanager.load(username, host, "accounts");
103 log("debug", "account not found for username '%s' at host '%s'", username, module.host);
104 return nil, "Auth failed. Invalid username";
106 if (account.hashpass == nil or string.len(account.hashpass) == 0) and (account.password == nil or string.len(account.password) == 0) then
107 log("debug", "account password not set or zero-length for username '%s' at host '%s'", username, module.host);
108 return nil, "Auth failed. Password invalid.";
113 function provider.create_user(username, password)
114 if is_cyrus(host) then return nil, "Account creation/modification not available with Cyrus SASL."; end
115 local salt = generate_uuid();
116 local valid, binpass = saltedPasswordSHA1(password, salt, iteration_count);
117 local hexpass = binpass:gsub(".", function (c) return ("%02x"):format(c:byte()); end);
118 return datamanager.store(username, host, "accounts", {hashpass = hexpass, salt = salt, iteration_count = iteration_count});
121 function provider.get_supported_methods()
122 return {["PLAIN"] = true}; -- TODO this should be taken from the config
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));