1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
|
module:set_global();
local cert_verify_identity = require "prosody.util.x509".verify_identity;
local log = module._log;
local measure_cert_statuses = module:metric("counter", "checked", "", "Certificate validation results",
{ "chain"; "identity" })
module:hook("s2s-check-certificate", function(event)
local session, host, cert = event.session, event.host, event.cert;
local conn = session.conn;
local log = session.log or log;
local secure_hostname = conn.extra and conn.extra.secure_hostname;
if not cert then
log("warn", "No certificate provided by %s", host or "unknown host");
return;
end
local chain_valid, errors = conn:ssl_peerverification();
-- Is there any interest in printing out all/the number of errors here?
if not chain_valid then
log("debug", "certificate chain validation result: invalid");
if type(errors) == "table" then
for depth, t in pairs(errors) do
log("debug", "certificate error(s) at depth %d: %s", depth-1, table.concat(t, ", "));
end
else
log("debug", "certificate error: %s", errors);
end
session.cert_chain_status = "invalid";
session.cert_chain_errors = errors;
else
log("debug", "certificate chain validation result: valid");
session.cert_chain_status = "valid";
-- We'll go ahead and verify the asserted identity if the
-- connecting server specified one.
if host then
if cert_verify_identity(host, "xmpp-server", cert) then
session.cert_identity_status = "valid"
else
session.cert_identity_status = "invalid"
end
log("debug", "certificate identity validation result: %s", session.cert_identity_status);
end
-- Check for DNSSEC-signed SRV hostname
if secure_hostname and session.cert_identity_status ~= "valid" then
if cert_verify_identity(secure_hostname, "xmpp-server", cert) then
module:log("info", "Secure SRV name delegation %q -> %q", secure_hostname, host);
session.cert_identity_status = "valid"
end
end
end
measure_cert_statuses:with_labels(session.cert_chain_status or "unknown", session.cert_identity_status or "unknown"):add(1);
end, 509);
|
