prosody-modules
caf7e88dc9e5
mod_password_policy/mod_password_policy.lua

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mod_password_policy/mod_password_policy.lua @ 4829:caf7e88dc9e5

mod_password_policy: Add check that password doesn't contain username
author Matthew Wild <mwild1@gmail.com>
date Wed, 22 Dec 2021 14:03:25 +0000
parent 4828:56eba4bca28f
child 4830:af6143cf7d22
comparison
equal deleted inserted replaced
4828:56eba4bca28f 4829:caf7e88dc9e5
11 11
12 local options = module:get_option("password_policy"); 12 local options = module:get_option("password_policy");
13 13
14 options = options or {}; 14 options = options or {};
15 options.length = options.length or 8; 15 options.length = options.length or 8;
16 if options.exclude_username == nil then
17 options.exclude_username = true;
18 end
16 19
17 local st = require "util.stanza"; 20 local st = require "util.stanza";
18 21
19 function check_password(password) 22 function check_password(password, additional_info)
20 if #password < options.length then 23 if #password < options.length then
21 return nil, ("Password is too short (minimum %d characters)"):format(options.length), "length"; 24 return nil, ("Password is too short (minimum %d characters)"):format(options.length), "length";
25 end
26
27 if additional_info then
28 local username = additional_info.username;
29 if username and password:lower():find(username:lower(), 1, true) then
30 return nil, "Password must not include your username", "username";
31 end
22 end 32 end
23 return true; 33 return true;
24 end 34 end
25 35
26 function get_policy() 36 function get_policy()
44 end 54 end
45 end 55 end
46 56
47 table.insert(passwords, query:get_child_text("password")); 57 table.insert(passwords, query:get_child_text("password"));
48 58
59 local additional_info = {
60 username = origin.username;
61 };
62
49 for _,password in ipairs(passwords) do 63 for _,password in ipairs(passwords) do
50 if password then 64 if password then
51 local pw_ok, pw_err, pw_failed_policy = check_password(password); 65 local pw_ok, pw_err, pw_failed_policy = check_password(password, additional_info);
52 if not pw_ok then 66 if not pw_ok then
53 module:log("debug", "Password failed check against '%s' policy", pw_failed_policy); 67 module:log("debug", "Password failed check against '%s' policy", pw_failed_policy);
54 origin.send(st.error_reply(stanza, "cancel", "not-acceptable", pw_err)); 68 origin.send(st.error_reply(stanza, "cancel", "not-acceptable", pw_err));
55 return true; 69 return true;
56 end 70 end