prosody
db9def53fe9c
plugins/mod_hashpassauth.lua

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plugins/mod_hashpassauth.lua @ 3164:db9def53fe9c

Check in mod_hashpassauth -- works!
author Jeff Mitchell <jeff@jefferai.org>
date Wed, 26 May 2010 18:16:58 -0400
child 3166:3c46cb94caed
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3163:a23168cc4af5 3164:db9def53fe9c
1 -- Prosody IM
2 -- Copyright (C) 2008-2010 Matthew Wild
3 -- Copyright (C) 2008-2010 Waqas Hussain
4 -- Copyright (C) 2010 Jeff Mitchell
5 --
6 -- This project is MIT/X11 licensed. Please see the
7 -- COPYING file in the source package for more information.
8 --
9
10 local datamanager = require "util.datamanager";
11 local log = require "util.logger".init("usermanager");
12 local type = type;
13 local error = error;
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 hosts = hosts;
22
23 local prosody = _G.prosody;
24
25 local is_cyrus = usermanager.is_cyrus;
26
27 -- Default; can be set per-user
28 local iteration_count = 4096;
29
30 function new_hashpass_provider(host)
31 local provider = { name = "hashpass" };
32 log("debug", "initializing hashpass authentication provider for host '%s'", host);
33
34 function provider.test_password(username, password)
35 log("debug", "test password for user %s at host %s", username, module.host);
36 if is_cyrus(host) then return nil, "Legacy auth not supported with Cyrus SASL."; end
37 local credentials = datamanager.load(username, host, "accounts") or {};
38
39 if credentials.hashpass == nil or credentials.iteration_count == nil or credentials.salt == nil then
40 return nil, "Auth failed. Stored credential information is not complete.";
41 end
42
43 local valid, binpass = saltedPasswordSHA1(password, credentials.salt, credentials.iteration_count);
44 local hexpass = binpass:gsub(".", function (c) return ("%02x"):format(c:byte()); end);
45 if valid then
46 log("debug", "salted password returned valid");
47 else
48 log("debug", "salted password returned not valid");
49 end
50 log("debug", "hexpass is '%s', stored pass is '%s'", hexpass, credentials.hashpass);
51 if valid and hexpass == credentials.hashpass then
52 return true;
53 else
54 return nil, "Auth failed. Invalid username, password, or password hash information.";
55 end
56 end
57
58 function provider.get_password(username)
59 log("debug", "get_password for username '%s' at host '%s'", username, module.host);
60 if is_cyrus(host) then return nil, "Passwords unavailable for Cyrus SASL."; end
61 return (datamanager.load(username, host, "accounts") or {}).hashpass;
62 end
63
64 function provider.set_password(username, password)
65 if is_cyrus(host) then return nil, "Passwords unavailable for Cyrus SASL."; end
66 local account = datamanager.load(username, host, "accounts");
67 if account then
68 if account.iteration_count == nil then
69 account.iteration_count = iteration_count;
70 end
71
72 if account.salt == nil then
73 account.salt = generate_uuid();
74 end
75
76 local valid, binpass = saltedPasswordSHA1(password, account.salt, account.iteration_count);
77 local hexpass = binpass:gsub(".", function (c) return ("%02x"):format(c:byte()); end);
78 account.hashpass = hexpass;
79
80 return datamanager.store(username, host, "accounts", account);
81 end
82 return nil, "Account not available.";
83 end
84
85 function provider.user_exists(username)
86 if is_cyrus(host) then return true; end
87 local account = datamanager.load(username, host, "accounts");
88 if not account then
89 log("debug", "account not found for username '%s' at host '%s'", username, module.host);
90 return nil, "Auth failed. Invalid username";
91 end
92 if account.hashpass == nil or string.len(account.hashpass) == 0 then
93 log("debug", "account password not set or zero-length for username '%s' at host '%s'", username, module.host);
94 return nil, "Auth failed. Password invalid.";
95 end
96 return true;
97 end
98
99 function provider.create_user(username, password)
100 if is_cyrus(host) then return nil, "Account creation/modification not available with Cyrus SASL."; end
101 local salt = generate_uuid();
102 local valid, binpass = saltedPasswordSHA1(password, salt, iteration_count);
103 local hexpass = binpass:gsub(".", function (c) return ("%02x"):format(c:byte()); end);
104 return datamanager.store(username, host, "accounts", {hashpass = hexpass, salt = salt, iteration_count = iteration_count});
105 end
106
107 function provider.get_supported_methods()
108 return {["PLAIN"] = true}; -- TODO this should be taken from the config
109 end
110
111 function provider.is_admin(jid)
112 local admins = config.get(host, "core", "admins");
113 if admins ~= config.get("*", "core", "admins") and type(admins) == "table" then
114 jid = jid_bare(jid);
115 for _,admin in ipairs(admins) do
116 if admin == jid then return true; end
117 end
118 elseif admins then
119 log("error", "Option 'admins' for host '%s' is not a table", host);
120 end
121 return is_admin(jid); -- Test whether it's a global admin instead
122 end
123 return provider;
124 end
125
126 module:add_item("auth-provider", new_hashpass_provider(module.host));
127