1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
|
-- 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));
|
