util/sasl/plain.lua

branch
sasl
changeset 2182
1112871916eb
child 2183
f0a85d11823e
equal deleted inserted replaced
2181:e92339c48ee6 2182:1112871916eb
1 -- sasl.lua v0.4
2 -- Copyright (C) 2008-2009 Tobias Markmann
3 --
4 -- All rights reserved.
5 --
6 -- Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
7 --
8 -- * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
9 -- * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
10 -- * Neither the name of Tobias Markmann nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
11 --
12 -- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
13
14 local registerMechanism = registerMechanism
15
16 module "plain"
17
18 --=========================
19 --SASL PLAIN according to RFC 4616
20 local function plain(self, message)
21 local response = message
22 local authorization = s_match(response, "([^%z]+)")
23 local authentication = s_match(response, "%z([^%z]+)%z")
24 local password = s_match(response, "%z[^%z]+%z([^%z]+)")
25
26 if authentication == nil or password == nil then
27 return "failure", "malformed-request";
28 end
29
30 local correct, state = false, false;
31 if self.profile.plain then
32 local correct_password;
33 correct_password, state = self.profile.plain(authentication, self.realm);
34 if correct_password == password then correct = true; else correct = false; end
35 elseif self.profile.plain_test then
36 correct, state = self.profile.plain_test(authentication, self.realm, password);
37 end
38
39 self.username = authentication
40 if not state then
41 return "failure", "account-disabled";
42 end
43
44 if correct then
45 return "success";
46 else
47 return "failure", "not-authorized";
48 end
49 end
50
51 registerMechanism("PLAIN", {"plain", "plain_test"}, plain);
52
53 return _M;

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