Mercurial > prosody-modules

annotate mod_auth_token/token_auth_utils.lib.lua @ 5489:a7188eb4ded4

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
mod_http_debug: Add a brief README
author Kim Alvefur <zash@zash.se>
date Fri, 26 May 2023 15:20:04 +0200
parents 0fb12a4b6106
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
2956
d0ca211e1b0e New HMAC token authentication module for Prosody.
JC Brand <jc@opkode.com>
parents:
diff changeset
1 local base64 = require "util.encodings".base64;
d0ca211e1b0e New HMAC token authentication module for Prosody.
JC Brand <jc@opkode.com>
parents:
diff changeset
2 local hmac = require "openssl.hmac";
d0ca211e1b0e New HMAC token authentication module for Prosody.
JC Brand <jc@opkode.com>
parents:
diff changeset
3 local luatz = require "luatz";
d0ca211e1b0e New HMAC token authentication module for Prosody.
JC Brand <jc@opkode.com>
parents:
diff changeset
4 local otp = require "otp";
d0ca211e1b0e New HMAC token authentication module for Prosody.
JC Brand <jc@opkode.com>
parents:
diff changeset
5
d0ca211e1b0e New HMAC token authentication module for Prosody.
JC Brand <jc@opkode.com>
parents:
diff changeset
6 local DIGEST_TYPE = "SHA256";
d0ca211e1b0e New HMAC token authentication module for Prosody.
JC Brand <jc@opkode.com>
parents:
diff changeset
7 local OTP_DEVIATION = 1;
d0ca211e1b0e New HMAC token authentication module for Prosody.
JC Brand <jc@opkode.com>
parents:
diff changeset
8 local OTP_DIGITS = 8;
d0ca211e1b0e New HMAC token authentication module for Prosody.
JC Brand <jc@opkode.com>
parents:
diff changeset
9 local OTP_INTERVAL = 30;
d0ca211e1b0e New HMAC token authentication module for Prosody.
JC Brand <jc@opkode.com>
parents:
diff changeset
10
d0ca211e1b0e New HMAC token authentication module for Prosody.
JC Brand <jc@opkode.com>
parents:
diff changeset
11 local nonce_cache = {};
d0ca211e1b0e New HMAC token authentication module for Prosody.
JC Brand <jc@opkode.com>
parents:
diff changeset
12
3693
0fb12a4b6106 auth_token: Various updates, see below.
JC Brand <jc@opkode.com>
parents: 3568
diff changeset
13 local function check_nonce(jid, otp_value, nonce)
2956
d0ca211e1b0e New HMAC token authentication module for Prosody.
JC Brand <jc@opkode.com>
parents:
diff changeset
14 -- We cache all nonces used per OTP, to ensure that a token cannot be used
d0ca211e1b0e New HMAC token authentication module for Prosody.
JC Brand <jc@opkode.com>
parents:
diff changeset
15 -- more than once.
d0ca211e1b0e New HMAC token authentication module for Prosody.
JC Brand <jc@opkode.com>
parents:
diff changeset
16 --
d0ca211e1b0e New HMAC token authentication module for Prosody.
JC Brand <jc@opkode.com>
parents:
diff changeset
17 -- We assume that the OTP is valid in the current time window. This is the
d0ca211e1b0e New HMAC token authentication module for Prosody.
JC Brand <jc@opkode.com>
parents:
diff changeset
18 -- case because we only call check_nonce *after* the OTP has been verified.
d0ca211e1b0e New HMAC token authentication module for Prosody.
JC Brand <jc@opkode.com>
parents:
diff changeset
19 --
d0ca211e1b0e New HMAC token authentication module for Prosody.
JC Brand <jc@opkode.com>
parents:
diff changeset
20 -- We only store one OTP per JID, so if a new OTP comes in, we wipe the
d0ca211e1b0e New HMAC token authentication module for Prosody.
JC Brand <jc@opkode.com>
parents:
diff changeset
21 -- previous OTP and its cached nonces.
3693
0fb12a4b6106 auth_token: Various updates, see below.
JC Brand <jc@opkode.com>
parents: 3568
diff changeset
22 if nonce_cache[jid] == nil or nonce_cache[jid][otp_value] == nil then
2956
d0ca211e1b0e New HMAC token authentication module for Prosody.
JC Brand <jc@opkode.com>
parents:
diff changeset
23 nonce_cache[jid] = {}
3693
0fb12a4b6106 auth_token: Various updates, see below.
JC Brand <jc@opkode.com>
parents: 3568
diff changeset
24 nonce_cache[jid][otp_value] = {}
0fb12a4b6106 auth_token: Various updates, see below.
JC Brand <jc@opkode.com>
parents: 3568
diff changeset
25 nonce_cache[jid][otp_value][nonce] = true
2956
d0ca211e1b0e New HMAC token authentication module for Prosody.
JC Brand <jc@opkode.com>
parents:
diff changeset
26 return true;
d0ca211e1b0e New HMAC token authentication module for Prosody.
JC Brand <jc@opkode.com>
parents:
diff changeset
27 end
3693
0fb12a4b6106 auth_token: Various updates, see below.
JC Brand <jc@opkode.com>
parents: 3568
diff changeset
28 if nonce_cache[jid][otp_value][nonce] == true then
2956
d0ca211e1b0e New HMAC token authentication module for Prosody.
JC Brand <jc@opkode.com>
parents:
diff changeset
29 return false;
d0ca211e1b0e New HMAC token authentication module for Prosody.
JC Brand <jc@opkode.com>
parents:
diff changeset
30 else
3693
0fb12a4b6106 auth_token: Various updates, see below.
JC Brand <jc@opkode.com>
parents: 3568
diff changeset
31 nonce_cache[jid][otp_value][nonce] = true;
2956
d0ca211e1b0e New HMAC token authentication module for Prosody.
JC Brand <jc@opkode.com>
parents:
diff changeset
32 return true;
d0ca211e1b0e New HMAC token authentication module for Prosody.
JC Brand <jc@opkode.com>
parents:
diff changeset
33 end
d0ca211e1b0e New HMAC token authentication module for Prosody.
JC Brand <jc@opkode.com>
parents:
diff changeset
34 end
d0ca211e1b0e New HMAC token authentication module for Prosody.
JC Brand <jc@opkode.com>
parents:
diff changeset
35
d0ca211e1b0e New HMAC token authentication module for Prosody.
JC Brand <jc@opkode.com>
parents:
diff changeset
36
3693
0fb12a4b6106 auth_token: Various updates, see below.
JC Brand <jc@opkode.com>
parents: 3568
diff changeset
37 local function verify_token(username, password, otp_seed, token_secret, log)
2956
d0ca211e1b0e New HMAC token authentication module for Prosody.
JC Brand <jc@opkode.com>
parents:
diff changeset
38 local totp = otp.new_totp_from_key(otp_seed, OTP_DIGITS, OTP_INTERVAL)
d0ca211e1b0e New HMAC token authentication module for Prosody.
JC Brand <jc@opkode.com>
parents:
diff changeset
39 local token = string.match(password, "(%d+) ")
3693
0fb12a4b6106 auth_token: Various updates, see below.
JC Brand <jc@opkode.com>
parents: 3568
diff changeset
40 local otp_value = token:sub(1,8)
2956
d0ca211e1b0e New HMAC token authentication module for Prosody.
JC Brand <jc@opkode.com>
parents:
diff changeset
41 local nonce = token:sub(9)
d0ca211e1b0e New HMAC token authentication module for Prosody.
JC Brand <jc@opkode.com>
parents:
diff changeset
42 local signature = base64.decode(string.match(password, " (.+)"))
3693
0fb12a4b6106 auth_token: Various updates, see below.
JC Brand <jc@opkode.com>
parents: 3568
diff changeset
43 local jid = username.."@"..module.host
2956
d0ca211e1b0e New HMAC token authentication module for Prosody.
JC Brand <jc@opkode.com>
parents:
diff changeset
44
3693
0fb12a4b6106 auth_token: Various updates, see below.
JC Brand <jc@opkode.com>
parents: 3568
diff changeset
45 if totp:verify(otp_value, OTP_DEVIATION, luatz.time()) then
3472
ac1f63cdb6d6 mod_auth_token: Check realm against module.host
JC Brand <jc@opkode.com>
parents: 2956
diff changeset
46 log("debug", "The TOTP was verified");
2956
d0ca211e1b0e New HMAC token authentication module for Prosody.
JC Brand <jc@opkode.com>
parents:
diff changeset
47 local hmac_ctx = hmac.new(token_secret, DIGEST_TYPE)
3693
0fb12a4b6106 auth_token: Various updates, see below.
JC Brand <jc@opkode.com>
parents: 3568
diff changeset
48 if signature == hmac_ctx:final(otp_value..nonce..jid) then
3472
ac1f63cdb6d6 mod_auth_token: Check realm against module.host
JC Brand <jc@opkode.com>
parents: 2956
diff changeset
49 log("debug", "The key was verified");
3693
0fb12a4b6106 auth_token: Various updates, see below.
JC Brand <jc@opkode.com>
parents: 3568
diff changeset
50 if check_nonce(jid, otp_value, nonce) then
3472
ac1f63cdb6d6 mod_auth_token: Check realm against module.host
JC Brand <jc@opkode.com>
parents: 2956
diff changeset
51 log("debug", "The nonce was verified");
2956
d0ca211e1b0e New HMAC token authentication module for Prosody.
JC Brand <jc@opkode.com>
parents:
diff changeset
52 return true;
d0ca211e1b0e New HMAC token authentication module for Prosody.
JC Brand <jc@opkode.com>
parents:
diff changeset
53 end
d0ca211e1b0e New HMAC token authentication module for Prosody.
JC Brand <jc@opkode.com>
parents:
diff changeset
54 end
d0ca211e1b0e New HMAC token authentication module for Prosody.
JC Brand <jc@opkode.com>
parents:
diff changeset
55 end
3472
ac1f63cdb6d6 mod_auth_token: Check realm against module.host
JC Brand <jc@opkode.com>
parents: 2956
diff changeset
56 log("debug", "Verification failed");
2956
d0ca211e1b0e New HMAC token authentication module for Prosody.
JC Brand <jc@opkode.com>
parents:
diff changeset
57 return false;
d0ca211e1b0e New HMAC token authentication module for Prosody.
JC Brand <jc@opkode.com>
parents:
diff changeset
58 end
d0ca211e1b0e New HMAC token authentication module for Prosody.
JC Brand <jc@opkode.com>
parents:
diff changeset
59
d0ca211e1b0e New HMAC token authentication module for Prosody.
JC Brand <jc@opkode.com>
parents:
diff changeset
60 return {
d0ca211e1b0e New HMAC token authentication module for Prosody.
JC Brand <jc@opkode.com>
parents:
diff changeset
61 OTP_DEVIATION = OTP_DIGITS,
d0ca211e1b0e New HMAC token authentication module for Prosody.
JC Brand <jc@opkode.com>
parents:
diff changeset
62 OTP_DIGITS = OTP_DIGITS,
d0ca211e1b0e New HMAC token authentication module for Prosody.
JC Brand <jc@opkode.com>
parents:
diff changeset
63 OTP_INTERVAL = OTP_INTERVAL,
d0ca211e1b0e New HMAC token authentication module for Prosody.
JC Brand <jc@opkode.com>
parents:
diff changeset
64 DIGEST_TYPE = DIGEST_TYPE,
d0ca211e1b0e New HMAC token authentication module for Prosody.
JC Brand <jc@opkode.com>
parents:
diff changeset
65 verify_token = verify_token;
d0ca211e1b0e New HMAC token authentication module for Prosody.
JC Brand <jc@opkode.com>
parents:
diff changeset
66 }