Mercurial > prosody-modules

annotate mod_password_policy/mod_password_policy.lua @ 5623:8de02381e80a

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
mod_http_oauth2: Conform to XHTML in templates Mostly because pedantic. Seems appropriate. Nice to be able to use an XML parser.
author Kim Alvefur <zash@zash.se>
date Mon, 31 Jul 2023 02:04:05 +0200
parents bfd4af4caddc
children d3b69859553a
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
841
0649883de4d3 mod_password_policy: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
1 -- Password policy enforcement for Prosody
0649883de4d3 mod_password_policy: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
2 --
0649883de4d3 mod_password_policy: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
3 -- Copyright (C) 2012 Waqas Hussain
0649883de4d3 mod_password_policy: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
4 --
0649883de4d3 mod_password_policy: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
5 --
0649883de4d3 mod_password_policy: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
6 -- Configuration:
0649883de4d3 mod_password_policy: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
7 -- password_policy = {
0649883de4d3 mod_password_policy: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
8 -- length = 8;
0649883de4d3 mod_password_policy: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
9 -- }
0649883de4d3 mod_password_policy: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
10
0649883de4d3 mod_password_policy: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
11
4832
bfd4af4caddc mod_password_policy: Support for additional policies provided by other modules
Matthew Wild <mwild1@gmail.com>
parents: 4831
diff changeset
12 local it = require "util.iterators";
bfd4af4caddc mod_password_policy: Support for additional policies provided by other modules
Matthew Wild <mwild1@gmail.com>
parents: 4831
diff changeset
13 local set = require "util.set";
bfd4af4caddc mod_password_policy: Support for additional policies provided by other modules
Matthew Wild <mwild1@gmail.com>
parents: 4831
diff changeset
14 local st = require "util.stanza";
bfd4af4caddc mod_password_policy: Support for additional policies provided by other modules
Matthew Wild <mwild1@gmail.com>
parents: 4831
diff changeset
15
841
0649883de4d3 mod_password_policy: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
16 local options = module:get_option("password_policy");
0649883de4d3 mod_password_policy: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
17
0649883de4d3 mod_password_policy: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
18 options = options or {};
0649883de4d3 mod_password_policy: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
19 options.length = options.length or 8;
4829
caf7e88dc9e5 mod_password_policy: Add check that password doesn't contain username
Matthew Wild <mwild1@gmail.com>
parents: 4828
diff changeset
20 if options.exclude_username == nil then
caf7e88dc9e5 mod_password_policy: Add check that password doesn't contain username
Matthew Wild <mwild1@gmail.com>
parents: 4828
diff changeset
21 options.exclude_username = true;
caf7e88dc9e5 mod_password_policy: Add check that password doesn't contain username
Matthew Wild <mwild1@gmail.com>
parents: 4828
diff changeset
22 end
841
0649883de4d3 mod_password_policy: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
23
4832
bfd4af4caddc mod_password_policy: Support for additional policies provided by other modules
Matthew Wild <mwild1@gmail.com>
parents: 4831
diff changeset
24 local builtin_policies = set.new({ "length", "exclude_username" });
bfd4af4caddc mod_password_policy: Support for additional policies provided by other modules
Matthew Wild <mwild1@gmail.com>
parents: 4831
diff changeset
25 local extra_policies = set.new(it.to_array(it.keys(options))) - builtin_policies;
bfd4af4caddc mod_password_policy: Support for additional policies provided by other modules
Matthew Wild <mwild1@gmail.com>
parents: 4831
diff changeset
26
bfd4af4caddc mod_password_policy: Support for additional policies provided by other modules
Matthew Wild <mwild1@gmail.com>
parents: 4831
diff changeset
27 local extra_policy_handlers = {};
bfd4af4caddc mod_password_policy: Support for additional policies provided by other modules
Matthew Wild <mwild1@gmail.com>
parents: 4831
diff changeset
28
bfd4af4caddc mod_password_policy: Support for additional policies provided by other modules
Matthew Wild <mwild1@gmail.com>
parents: 4831
diff changeset
29 module:handle_items("password-policy-provider", function (event)
bfd4af4caddc mod_password_policy: Support for additional policies provided by other modules
Matthew Wild <mwild1@gmail.com>
parents: 4831
diff changeset
30 -- Password policy handler added
bfd4af4caddc mod_password_policy: Support for additional policies provided by other modules
Matthew Wild <mwild1@gmail.com>
parents: 4831
diff changeset
31 local item = event.item;
bfd4af4caddc mod_password_policy: Support for additional policies provided by other modules
Matthew Wild <mwild1@gmail.com>
parents: 4831
diff changeset
32 module:log("error", "Adding password policy handler '%s'", item.name);
bfd4af4caddc mod_password_policy: Support for additional policies provided by other modules
Matthew Wild <mwild1@gmail.com>
parents: 4831
diff changeset
33 extra_policy_handlers[item.name] = item.check_password;
bfd4af4caddc mod_password_policy: Support for additional policies provided by other modules
Matthew Wild <mwild1@gmail.com>
parents: 4831
diff changeset
34 end, function (event)
bfd4af4caddc mod_password_policy: Support for additional policies provided by other modules
Matthew Wild <mwild1@gmail.com>
parents: 4831
diff changeset
35 -- Password policy handler removed
bfd4af4caddc mod_password_policy: Support for additional policies provided by other modules
Matthew Wild <mwild1@gmail.com>
parents: 4831
diff changeset
36 local item = event.item;
bfd4af4caddc mod_password_policy: Support for additional policies provided by other modules
Matthew Wild <mwild1@gmail.com>
parents: 4831
diff changeset
37 extra_policy_handlers[item.name] = nil;
bfd4af4caddc mod_password_policy: Support for additional policies provided by other modules
Matthew Wild <mwild1@gmail.com>
parents: 4831
diff changeset
38 end);
841
0649883de4d3 mod_password_policy: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
39
4829
caf7e88dc9e5 mod_password_policy: Add check that password doesn't contain username
Matthew Wild <mwild1@gmail.com>
parents: 4828
diff changeset
40 function check_password(password, additional_info)
4830
af6143cf7d22 mod_password_policy: Hard failure on missing/empty passwords
Matthew Wild <mwild1@gmail.com>
parents: 4829
diff changeset
41 if not password or password == "" then
af6143cf7d22 mod_password_policy: Hard failure on missing/empty passwords
Matthew Wild <mwild1@gmail.com>
parents: 4829
diff changeset
42 return nil, "No password provided", "no-password";
af6143cf7d22 mod_password_policy: Hard failure on missing/empty passwords
Matthew Wild <mwild1@gmail.com>
parents: 4829
diff changeset
43 end
af6143cf7d22 mod_password_policy: Hard failure on missing/empty passwords
Matthew Wild <mwild1@gmail.com>
parents: 4829
diff changeset
44
3350
cb26d04b391c mod_password_policy: Return error as second result explaining failure reason
Matthew Wild <mwild1@gmail.com>
parents: 845
diff changeset
45 if #password < options.length then
4828
56eba4bca28f mod_password_policy: Allow check_password() to indicate the policy that failed
Matthew Wild <mwild1@gmail.com>
parents: 3351
diff changeset
46 return nil, ("Password is too short (minimum %d characters)"):format(options.length), "length";
3350
cb26d04b391c mod_password_policy: Return error as second result explaining failure reason
Matthew Wild <mwild1@gmail.com>
parents: 845
diff changeset
47 end
4829
caf7e88dc9e5 mod_password_policy: Add check that password doesn't contain username
Matthew Wild <mwild1@gmail.com>
parents: 4828
diff changeset
48
caf7e88dc9e5 mod_password_policy: Add check that password doesn't contain username
Matthew Wild <mwild1@gmail.com>
parents: 4828
diff changeset
49 if additional_info then
caf7e88dc9e5 mod_password_policy: Add check that password doesn't contain username
Matthew Wild <mwild1@gmail.com>
parents: 4828
diff changeset
50 local username = additional_info.username;
caf7e88dc9e5 mod_password_policy: Add check that password doesn't contain username
Matthew Wild <mwild1@gmail.com>
parents: 4828
diff changeset
51 if username and password:lower():find(username:lower(), 1, true) then
caf7e88dc9e5 mod_password_policy: Add check that password doesn't contain username
Matthew Wild <mwild1@gmail.com>
parents: 4828
diff changeset
52 return nil, "Password must not include your username", "username";
caf7e88dc9e5 mod_password_policy: Add check that password doesn't contain username
Matthew Wild <mwild1@gmail.com>
parents: 4828
diff changeset
53 end
caf7e88dc9e5 mod_password_policy: Add check that password doesn't contain username
Matthew Wild <mwild1@gmail.com>
parents: 4828
diff changeset
54 end
4832
bfd4af4caddc mod_password_policy: Support for additional policies provided by other modules
Matthew Wild <mwild1@gmail.com>
parents: 4831
diff changeset
55
bfd4af4caddc mod_password_policy: Support for additional policies provided by other modules
Matthew Wild <mwild1@gmail.com>
parents: 4831
diff changeset
56 for policy in extra_policies do
bfd4af4caddc mod_password_policy: Support for additional policies provided by other modules
Matthew Wild <mwild1@gmail.com>
parents: 4831
diff changeset
57 local handler = extra_policy_handlers[policy];
bfd4af4caddc mod_password_policy: Support for additional policies provided by other modules
Matthew Wild <mwild1@gmail.com>
parents: 4831
diff changeset
58 if not handler then
bfd4af4caddc mod_password_policy: Support for additional policies provided by other modules
Matthew Wild <mwild1@gmail.com>
parents: 4831
diff changeset
59 module:log("error", "No policy handler found for '%s' (typo, or module not loaded?)", policy);
bfd4af4caddc mod_password_policy: Support for additional policies provided by other modules
Matthew Wild <mwild1@gmail.com>
parents: 4831
diff changeset
60 return nil, "Internal error while verifying password", "internal";
bfd4af4caddc mod_password_policy: Support for additional policies provided by other modules
Matthew Wild <mwild1@gmail.com>
parents: 4831
diff changeset
61 end
bfd4af4caddc mod_password_policy: Support for additional policies provided by other modules
Matthew Wild <mwild1@gmail.com>
parents: 4831
diff changeset
62 local ok, reason_text, reason_name = handler(password, options[policy], additional_info);
bfd4af4caddc mod_password_policy: Support for additional policies provided by other modules
Matthew Wild <mwild1@gmail.com>
parents: 4831
diff changeset
63 if ok ~= true then
bfd4af4caddc mod_password_policy: Support for additional policies provided by other modules
Matthew Wild <mwild1@gmail.com>
parents: 4831
diff changeset
64 return nil, reason_text or ("Password failed %s check"):format(policy), reason_name or policy;
bfd4af4caddc mod_password_policy: Support for additional policies provided by other modules
Matthew Wild <mwild1@gmail.com>
parents: 4831
diff changeset
65 end
bfd4af4caddc mod_password_policy: Support for additional policies provided by other modules
Matthew Wild <mwild1@gmail.com>
parents: 4831
diff changeset
66 end
bfd4af4caddc mod_password_policy: Support for additional policies provided by other modules
Matthew Wild <mwild1@gmail.com>
parents: 4831
diff changeset
67
3350
cb26d04b391c mod_password_policy: Return error as second result explaining failure reason
Matthew Wild <mwild1@gmail.com>
parents: 845
diff changeset
68 return true;
841
0649883de4d3 mod_password_policy: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
69 end
0649883de4d3 mod_password_policy: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
70
4831
5a42cb84c8ee mod_password_policy: Silence luacheck warning for intentional global
Matthew Wild <mwild1@gmail.com>
parents: 4830
diff changeset
71 function get_policy() --luacheck: ignore 131/get_policy
3351
662f2722f745 mod_password_policy: Export function to get policy in use by the module
Matthew Wild <mwild1@gmail.com>
parents: 3350
diff changeset
72 return options;
662f2722f745 mod_password_policy: Export function to get policy in use by the module
Matthew Wild <mwild1@gmail.com>
parents: 3350
diff changeset
73 end
662f2722f745 mod_password_policy: Export function to get policy in use by the module
Matthew Wild <mwild1@gmail.com>
parents: 3350
diff changeset
74
841
0649883de4d3 mod_password_policy: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
75 function handler(event)
0649883de4d3 mod_password_policy: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
76 local origin, stanza = event.origin, event.stanza;
0649883de4d3 mod_password_policy: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
77
0649883de4d3 mod_password_policy: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
78 if stanza.attr.type == "set" then
0649883de4d3 mod_password_policy: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
79 local query = stanza.tags[1];
0649883de4d3 mod_password_policy: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
80
0649883de4d3 mod_password_policy: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
81 local passwords = {};
0649883de4d3 mod_password_policy: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
82
0649883de4d3 mod_password_policy: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
83 local dataform = query:get_child("x", "jabber:x:data");
0649883de4d3 mod_password_policy: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
84 if dataform then
0649883de4d3 mod_password_policy: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
85 for _,tag in ipairs(dataform.tags) do
0649883de4d3 mod_password_policy: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
86 if tag.attr.var == "password" then
0649883de4d3 mod_password_policy: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
87 table.insert(passwords, tag:get_child_text("value"));
0649883de4d3 mod_password_policy: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
88 end
0649883de4d3 mod_password_policy: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
89 end
0649883de4d3 mod_password_policy: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
90 end
0649883de4d3 mod_password_policy: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
91
0649883de4d3 mod_password_policy: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
92 table.insert(passwords, query:get_child_text("password"));
0649883de4d3 mod_password_policy: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
93
4829
caf7e88dc9e5 mod_password_policy: Add check that password doesn't contain username
Matthew Wild <mwild1@gmail.com>
parents: 4828
diff changeset
94 local additional_info = {
caf7e88dc9e5 mod_password_policy: Add check that password doesn't contain username
Matthew Wild <mwild1@gmail.com>
parents: 4828
diff changeset
95 username = origin.username;
caf7e88dc9e5 mod_password_policy: Add check that password doesn't contain username
Matthew Wild <mwild1@gmail.com>
parents: 4828
diff changeset
96 };
caf7e88dc9e5 mod_password_policy: Add check that password doesn't contain username
Matthew Wild <mwild1@gmail.com>
parents: 4828
diff changeset
97
841
0649883de4d3 mod_password_policy: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
98 for _,password in ipairs(passwords) do
4828
56eba4bca28f mod_password_policy: Allow check_password() to indicate the policy that failed
Matthew Wild <mwild1@gmail.com>
parents: 3351
diff changeset
99 if password then
4829
caf7e88dc9e5 mod_password_policy: Add check that password doesn't contain username
Matthew Wild <mwild1@gmail.com>
parents: 4828
diff changeset
100 local pw_ok, pw_err, pw_failed_policy = check_password(password, additional_info);
4828
56eba4bca28f mod_password_policy: Allow check_password() to indicate the policy that failed
Matthew Wild <mwild1@gmail.com>
parents: 3351
diff changeset
101 if not pw_ok then
56eba4bca28f mod_password_policy: Allow check_password() to indicate the policy that failed
Matthew Wild <mwild1@gmail.com>
parents: 3351
diff changeset
102 module:log("debug", "Password failed check against '%s' policy", pw_failed_policy);
56eba4bca28f mod_password_policy: Allow check_password() to indicate the policy that failed
Matthew Wild <mwild1@gmail.com>
parents: 3351
diff changeset
103 origin.send(st.error_reply(stanza, "cancel", "not-acceptable", pw_err));
56eba4bca28f mod_password_policy: Allow check_password() to indicate the policy that failed
Matthew Wild <mwild1@gmail.com>
parents: 3351
diff changeset
104 return true;
56eba4bca28f mod_password_policy: Allow check_password() to indicate the policy that failed
Matthew Wild <mwild1@gmail.com>
parents: 3351
diff changeset
105 end
841
0649883de4d3 mod_password_policy: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
106 end
0649883de4d3 mod_password_policy: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
107 end
0649883de4d3 mod_password_policy: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
108 end
0649883de4d3 mod_password_policy: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
109 end
0649883de4d3 mod_password_policy: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
110
0649883de4d3 mod_password_policy: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
111 module:hook("iq/self/jabber:iq:register:query", handler, 10);
0649883de4d3 mod_password_policy: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
112 module:hook("iq/host/jabber:iq:register:query", handler, 10);
0649883de4d3 mod_password_policy: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
113 module:hook("stanza/iq/jabber:iq:register:query", handler, 10);