prosody-modules
50f986deb3f7
mod_s2s_auth_dane/mod_s2s_auth_dane.lua

Find changesets by keywords by author, files, the commit message, revision number or hash, or revset expression.

Software / code / prosody-modules

Annotate

mod_s2s_auth_dane/mod_s2s_auth_dane.lua @ 1394:50f986deb3f7

mod_s2s_auth_dane: Launch DANE queries when sending or receiving stream-features instead of monkeypatching s2sout.lib
author Kim Alvefur <zash@zash.se>
date Sun, 27 Apr 2014 01:24:03 +0200
parent 1392:d99c10fc4d19
child 1395:33f132c3f4b7
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
1258
fc82d8eded7d mod_s2s_auth_dane: Experimental DANE implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
1 -- mod_s2s_auth_dane
1332
08a0241f5d2c mod_s2s_auth_dane: Add some comments
Kim Alvefur <zash@zash.se>
parents: 1330
diff changeset
2 -- Copyright (C) 2013-2014 Kim Alvefur
1258
fc82d8eded7d mod_s2s_auth_dane: Experimental DANE implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
3 --
1332
08a0241f5d2c mod_s2s_auth_dane: Add some comments
Kim Alvefur <zash@zash.se>
parents: 1330
diff changeset
4 -- This file is MIT/X11 licensed.
08a0241f5d2c mod_s2s_auth_dane: Add some comments
Kim Alvefur <zash@zash.se>
parents: 1330
diff changeset
5 --
1370
e3fe6c749bc3 mod_s2s_auth_dane: Merge functionality from mod_s2s_auth_dnssec_srv
Kim Alvefur <zash@zash.se>
parents: 1368
diff changeset
6 -- Implements DANE and Secure Delegation using DNS SRV as described in
e3fe6c749bc3 mod_s2s_auth_dane: Merge functionality from mod_s2s_auth_dnssec_srv
Kim Alvefur <zash@zash.se>
parents: 1368
diff changeset
7 -- http://tools.ietf.org/html/draft-miller-xmpp-dnssec-prooftype
1349
350e903b14ff mod_s2s_auth_dane: Comments and TODOs
Kim Alvefur <zash@zash.se>
parents: 1348
diff changeset
8 --
350e903b14ff mod_s2s_auth_dane: Comments and TODOs
Kim Alvefur <zash@zash.se>
parents: 1348
diff changeset
9 -- Known issues:
1332
08a0241f5d2c mod_s2s_auth_dane: Add some comments
Kim Alvefur <zash@zash.se>
parents: 1330
diff changeset
10 -- Could be done much cleaner if mod_s2s was using util.async
1349
350e903b14ff mod_s2s_auth_dane: Comments and TODOs
Kim Alvefur <zash@zash.se>
parents: 1348
diff changeset
11 --
350e903b14ff mod_s2s_auth_dane: Comments and TODOs
Kim Alvefur <zash@zash.se>
parents: 1348
diff changeset
12 -- TODO Things to test/handle:
350e903b14ff mod_s2s_auth_dane: Comments and TODOs
Kim Alvefur <zash@zash.se>
parents: 1348
diff changeset
13 -- Negative or bogus answers
350e903b14ff mod_s2s_auth_dane: Comments and TODOs
Kim Alvefur <zash@zash.se>
parents: 1348
diff changeset
14 -- No encryption offered
350e903b14ff mod_s2s_auth_dane: Comments and TODOs
Kim Alvefur <zash@zash.se>
parents: 1348
diff changeset
15 -- Different hostname before and after STARTTLS - mod_s2s should complain
350e903b14ff mod_s2s_auth_dane: Comments and TODOs
Kim Alvefur <zash@zash.se>
parents: 1348
diff changeset
16 -- Interaction with Dialback
1258
fc82d8eded7d mod_s2s_auth_dane: Experimental DANE implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
17
fc82d8eded7d mod_s2s_auth_dane: Experimental DANE implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
18 module:set_global();
fc82d8eded7d mod_s2s_auth_dane: Experimental DANE implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
19
1348
6191613959dc mod_s2s_auth_dane: Make supported DANE usages configurable, default to DANE-EE
Kim Alvefur <zash@zash.se>
parents: 1347
diff changeset
20 local type = type;
1351
a052740bbf48 mod_s2s_auth_dane: Back to _port._tcp.srvtarget.example.net
Kim Alvefur <zash@zash.se>
parents: 1350
diff changeset
21 local t_insert = table.insert;
1348
6191613959dc mod_s2s_auth_dane: Make supported DANE usages configurable, default to DANE-EE
Kim Alvefur <zash@zash.se>
parents: 1347
diff changeset
22 local set = require"util.set";
1258
fc82d8eded7d mod_s2s_auth_dane: Experimental DANE implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
23 local dns_lookup = require"net.adns".lookup;
fc82d8eded7d mod_s2s_auth_dane: Experimental DANE implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
24 local hashes = require"util.hashes";
fc82d8eded7d mod_s2s_auth_dane: Experimental DANE implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
25 local base64 = require"util.encodings".base64;
1347
52b419885f0a mod_s2s_auth_dane: Simplify, but diverge from DANE-SRV draft. Will now look for _xmpp-server.example.com IN TLSA for both directions
Kim Alvefur <zash@zash.se>
parents: 1344
diff changeset
26 local idna_to_ascii = require "util.encodings".idna.to_ascii;
1370
e3fe6c749bc3 mod_s2s_auth_dane: Merge functionality from mod_s2s_auth_dnssec_srv
Kim Alvefur <zash@zash.se>
parents: 1368
diff changeset
27 local idna_to_unicode = require"util.encodings".idna.to_unicode;
e3fe6c749bc3 mod_s2s_auth_dane: Merge functionality from mod_s2s_auth_dnssec_srv
Kim Alvefur <zash@zash.se>
parents: 1368
diff changeset
28 local nameprep = require"util.encodings".stringprep.nameprep;
e3fe6c749bc3 mod_s2s_auth_dane: Merge functionality from mod_s2s_auth_dnssec_srv
Kim Alvefur <zash@zash.se>
parents: 1368
diff changeset
29 local cert_verify_identity = require "util.x509".verify_identity;
1258
fc82d8eded7d mod_s2s_auth_dane: Experimental DANE implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
30
1358
497e1df4b7ee mod_s2s_auth_dane: Abort module loading if luaunbound is unavailable
Kim Alvefur <zash@zash.se>
parents: 1356
diff changeset
31 if not dns_lookup.types or not dns_lookup.types.TLSA then
497e1df4b7ee mod_s2s_auth_dane: Abort module loading if luaunbound is unavailable
Kim Alvefur <zash@zash.se>
parents: 1356
diff changeset
32 module:log("error", "No TLSA support available, DANE will not be supported");
497e1df4b7ee mod_s2s_auth_dane: Abort module loading if luaunbound is unavailable
Kim Alvefur <zash@zash.se>
parents: 1356
diff changeset
33 return
497e1df4b7ee mod_s2s_auth_dane: Abort module loading if luaunbound is unavailable
Kim Alvefur <zash@zash.se>
parents: 1356
diff changeset
34 end
497e1df4b7ee mod_s2s_auth_dane: Abort module loading if luaunbound is unavailable
Kim Alvefur <zash@zash.se>
parents: 1356
diff changeset
35
1258
fc82d8eded7d mod_s2s_auth_dane: Experimental DANE implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
36 local pat = "%-%-%-%-%-BEGIN ([A-Z ]+)%-%-%-%-%-\r?\n"..
fc82d8eded7d mod_s2s_auth_dane: Experimental DANE implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
37 "([0-9A-Za-z=+/\r\n]*)\r?\n%-%-%-%-%-END %1%-%-%-%-%-";
fc82d8eded7d mod_s2s_auth_dane: Experimental DANE implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
38 local function pem2der(pem)
fc82d8eded7d mod_s2s_auth_dane: Experimental DANE implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
39 local typ, data = pem:match(pat);
fc82d8eded7d mod_s2s_auth_dane: Experimental DANE implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
40 if typ and data then
fc82d8eded7d mod_s2s_auth_dane: Experimental DANE implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
41 return base64.decode(data), typ;
fc82d8eded7d mod_s2s_auth_dane: Experimental DANE implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
42 end
fc82d8eded7d mod_s2s_auth_dane: Experimental DANE implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
43 end
1348
6191613959dc mod_s2s_auth_dane: Make supported DANE usages configurable, default to DANE-EE
Kim Alvefur <zash@zash.se>
parents: 1347
diff changeset
44 local use_map = { ["DANE-EE"] = 3; ["DANE-TA"] = 2; ["PKIX-EE"] = 1; ["PKIX-CA"] = 0 }
6191613959dc mod_s2s_auth_dane: Make supported DANE usages configurable, default to DANE-EE
Kim Alvefur <zash@zash.se>
parents: 1347
diff changeset
45
6191613959dc mod_s2s_auth_dane: Make supported DANE usages configurable, default to DANE-EE
Kim Alvefur <zash@zash.se>
parents: 1347
diff changeset
46 local implemented_uses = set.new { "DANE-EE", "PKIX-EE" };
6191613959dc mod_s2s_auth_dane: Make supported DANE usages configurable, default to DANE-EE
Kim Alvefur <zash@zash.se>
parents: 1347
diff changeset
47 local configured_uses = module:get_option_set("dane_uses", { "DANE-EE" });
6191613959dc mod_s2s_auth_dane: Make supported DANE usages configurable, default to DANE-EE
Kim Alvefur <zash@zash.se>
parents: 1347
diff changeset
48 local enabled_uses = set.intersection(implemented_uses, configured_uses) / function(use) return use_map[use] end;
1258
fc82d8eded7d mod_s2s_auth_dane: Experimental DANE implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
49
1351
a052740bbf48 mod_s2s_auth_dane: Back to _port._tcp.srvtarget.example.net
Kim Alvefur <zash@zash.se>
parents: 1350
diff changeset
50 local function dane_lookup(host_session, cb, a,b,c,e)
a052740bbf48 mod_s2s_auth_dane: Back to _port._tcp.srvtarget.example.net
Kim Alvefur <zash@zash.se>
parents: 1350
diff changeset
51 if host_session.dane ~= nil then return end
a052740bbf48 mod_s2s_auth_dane: Back to _port._tcp.srvtarget.example.net
Kim Alvefur <zash@zash.se>
parents: 1350
diff changeset
52 if host_session.direction == "incoming" then
1362
920ac9a8480b mod_s2s_auth_dane: Fix tb when no hostname sent by remote
Kim Alvefur <zash@zash.se>
parents: 1359
diff changeset
53 local name = host_session.from_host and idna_to_ascii(host_session.from_host);
1351
a052740bbf48 mod_s2s_auth_dane: Back to _port._tcp.srvtarget.example.net
Kim Alvefur <zash@zash.se>
parents: 1350
diff changeset
54 if not name then return end
1356
a74ba847195a mod_s2s_auth_dane: Drop support for domains without SRV for now
Kim Alvefur <zash@zash.se>
parents: 1355
diff changeset
55 host_session.dane = dns_lookup(function (answer)
1354
93158d5758f3 mod_s2s_auth_dane: Skip TLSA lookups if SRV is insecure
Kim Alvefur <zash@zash.se>
parents: 1353
diff changeset
56 if not answer.secure then
93158d5758f3 mod_s2s_auth_dane: Skip TLSA lookups if SRV is insecure
Kim Alvefur <zash@zash.se>
parents: 1353
diff changeset
57 if cb then return cb(a,b,c,e); end
93158d5758f3 mod_s2s_auth_dane: Skip TLSA lookups if SRV is insecure
Kim Alvefur <zash@zash.se>
parents: 1353
diff changeset
58 return;
93158d5758f3 mod_s2s_auth_dane: Skip TLSA lookups if SRV is insecure
Kim Alvefur <zash@zash.se>
parents: 1353
diff changeset
59 end
1356
a74ba847195a mod_s2s_auth_dane: Drop support for domains without SRV for now
Kim Alvefur <zash@zash.se>
parents: 1355
diff changeset
60 local n = #answer
a74ba847195a mod_s2s_auth_dane: Drop support for domains without SRV for now
Kim Alvefur <zash@zash.se>
parents: 1355
diff changeset
61 if n == 0 then if cb then return cb(a,b,c,e); end return end
a74ba847195a mod_s2s_auth_dane: Drop support for domains without SRV for now
Kim Alvefur <zash@zash.se>
parents: 1355
diff changeset
62 if n == 1 and answer[1].srv.target == '.' then return end
1351
a052740bbf48 mod_s2s_auth_dane: Back to _port._tcp.srvtarget.example.net
Kim Alvefur <zash@zash.se>
parents: 1350
diff changeset
63 local srv_hosts = { answer = answer };
a052740bbf48 mod_s2s_auth_dane: Back to _port._tcp.srvtarget.example.net
Kim Alvefur <zash@zash.se>
parents: 1350
diff changeset
64 local dane = {};
a052740bbf48 mod_s2s_auth_dane: Back to _port._tcp.srvtarget.example.net
Kim Alvefur <zash@zash.se>
parents: 1350
diff changeset
65 host_session.dane = dane;
a052740bbf48 mod_s2s_auth_dane: Back to _port._tcp.srvtarget.example.net
Kim Alvefur <zash@zash.se>
parents: 1350
diff changeset
66 host_session.srv_hosts = srv_hosts;
a052740bbf48 mod_s2s_auth_dane: Back to _port._tcp.srvtarget.example.net
Kim Alvefur <zash@zash.se>
parents: 1350
diff changeset
67 for _, record in ipairs(answer) do
a052740bbf48 mod_s2s_auth_dane: Back to _port._tcp.srvtarget.example.net
Kim Alvefur <zash@zash.se>
parents: 1350
diff changeset
68 t_insert(srv_hosts, record.srv);
a052740bbf48 mod_s2s_auth_dane: Back to _port._tcp.srvtarget.example.net
Kim Alvefur <zash@zash.se>
parents: 1350
diff changeset
69 dns_lookup(function(dane_answer)
a052740bbf48 mod_s2s_auth_dane: Back to _port._tcp.srvtarget.example.net
Kim Alvefur <zash@zash.se>
parents: 1350
diff changeset
70 n = n - 1;
a052740bbf48 mod_s2s_auth_dane: Back to _port._tcp.srvtarget.example.net
Kim Alvefur <zash@zash.se>
parents: 1350
diff changeset
71 if dane_answer.bogus then
1390
1fcd280c226b mod_s2s_auth_dane: Remove non-working bogus handling
Kim Alvefur <zash@zash.se>
parents: 1389
diff changeset
72 -- How to handle this?
1351
a052740bbf48 mod_s2s_auth_dane: Back to _port._tcp.srvtarget.example.net
Kim Alvefur <zash@zash.se>
parents: 1350
diff changeset
73 elseif dane_answer.secure then
a052740bbf48 mod_s2s_auth_dane: Back to _port._tcp.srvtarget.example.net
Kim Alvefur <zash@zash.se>
parents: 1350
diff changeset
74 for _, record in ipairs(dane_answer) do
a052740bbf48 mod_s2s_auth_dane: Back to _port._tcp.srvtarget.example.net
Kim Alvefur <zash@zash.se>
parents: 1350
diff changeset
75 t_insert(dane, record);
a052740bbf48 mod_s2s_auth_dane: Back to _port._tcp.srvtarget.example.net
Kim Alvefur <zash@zash.se>
parents: 1350
diff changeset
76 end
a052740bbf48 mod_s2s_auth_dane: Back to _port._tcp.srvtarget.example.net
Kim Alvefur <zash@zash.se>
parents: 1350
diff changeset
77 end
a052740bbf48 mod_s2s_auth_dane: Back to _port._tcp.srvtarget.example.net
Kim Alvefur <zash@zash.se>
parents: 1350
diff changeset
78 if n == 0 and cb then return cb(a,b,c,e); end
a052740bbf48 mod_s2s_auth_dane: Back to _port._tcp.srvtarget.example.net
Kim Alvefur <zash@zash.se>
parents: 1350
diff changeset
79 end, ("_%d._tcp.%s."):format(record.srv.port, record.srv.target), "TLSA");
a052740bbf48 mod_s2s_auth_dane: Back to _port._tcp.srvtarget.example.net
Kim Alvefur <zash@zash.se>
parents: 1350
diff changeset
80 end
a052740bbf48 mod_s2s_auth_dane: Back to _port._tcp.srvtarget.example.net
Kim Alvefur <zash@zash.se>
parents: 1350
diff changeset
81 end, "_xmpp-server._tcp."..name..".", "SRV");
a052740bbf48 mod_s2s_auth_dane: Back to _port._tcp.srvtarget.example.net
Kim Alvefur <zash@zash.se>
parents: 1350
diff changeset
82 return true;
a052740bbf48 mod_s2s_auth_dane: Back to _port._tcp.srvtarget.example.net
Kim Alvefur <zash@zash.se>
parents: 1350
diff changeset
83 elseif host_session.direction == "outgoing" then
1359
74769c0c79f8 mod_s2s_auth_dane: Verify that the SRV is secure
Kim Alvefur <zash@zash.se>
parents: 1358
diff changeset
84 local srv_hosts = host_session.srv_hosts;
74769c0c79f8 mod_s2s_auth_dane: Verify that the SRV is secure
Kim Alvefur <zash@zash.se>
parents: 1358
diff changeset
85 if not ( srv_hosts and srv_hosts.answer and srv_hosts.answer.secure ) then return end
74769c0c79f8 mod_s2s_auth_dane: Verify that the SRV is secure
Kim Alvefur <zash@zash.se>
parents: 1358
diff changeset
86 local srv_choice = srv_hosts[host_session.srv_choice];
1351
a052740bbf48 mod_s2s_auth_dane: Back to _port._tcp.srvtarget.example.net
Kim Alvefur <zash@zash.se>
parents: 1350
diff changeset
87 host_session.dane = dns_lookup(function(answer)
a052740bbf48 mod_s2s_auth_dane: Back to _port._tcp.srvtarget.example.net
Kim Alvefur <zash@zash.se>
parents: 1350
diff changeset
88 if answer and (answer.secure and #answer > 0) or answer.bogus then
a052740bbf48 mod_s2s_auth_dane: Back to _port._tcp.srvtarget.example.net
Kim Alvefur <zash@zash.se>
parents: 1350
diff changeset
89 srv_choice.dane = answer;
a052740bbf48 mod_s2s_auth_dane: Back to _port._tcp.srvtarget.example.net
Kim Alvefur <zash@zash.se>
parents: 1350
diff changeset
90 else
a052740bbf48 mod_s2s_auth_dane: Back to _port._tcp.srvtarget.example.net
Kim Alvefur <zash@zash.se>
parents: 1350
diff changeset
91 srv_choice.dane = false;
a052740bbf48 mod_s2s_auth_dane: Back to _port._tcp.srvtarget.example.net
Kim Alvefur <zash@zash.se>
parents: 1350
diff changeset
92 end
a052740bbf48 mod_s2s_auth_dane: Back to _port._tcp.srvtarget.example.net
Kim Alvefur <zash@zash.se>
parents: 1350
diff changeset
93 host_session.dane = srv_choice.dane;
a052740bbf48 mod_s2s_auth_dane: Back to _port._tcp.srvtarget.example.net
Kim Alvefur <zash@zash.se>
parents: 1350
diff changeset
94 if cb then return cb(a,b,c,e); end
a052740bbf48 mod_s2s_auth_dane: Back to _port._tcp.srvtarget.example.net
Kim Alvefur <zash@zash.se>
parents: 1350
diff changeset
95 end, ("_%d._tcp.%s."):format(srv_choice.port, srv_choice.target), "TLSA");
a052740bbf48 mod_s2s_auth_dane: Back to _port._tcp.srvtarget.example.net
Kim Alvefur <zash@zash.se>
parents: 1350
diff changeset
96 return true;
a052740bbf48 mod_s2s_auth_dane: Back to _port._tcp.srvtarget.example.net
Kim Alvefur <zash@zash.se>
parents: 1350
diff changeset
97 end
1347
52b419885f0a mod_s2s_auth_dane: Simplify, but diverge from DANE-SRV draft. Will now look for _xmpp-server.example.com IN TLSA for both directions
Kim Alvefur <zash@zash.se>
parents: 1344
diff changeset
98 end
52b419885f0a mod_s2s_auth_dane: Simplify, but diverge from DANE-SRV draft. Will now look for _xmpp-server.example.com IN TLSA for both directions
Kim Alvefur <zash@zash.se>
parents: 1344
diff changeset
99
52b419885f0a mod_s2s_auth_dane: Simplify, but diverge from DANE-SRV draft. Will now look for _xmpp-server.example.com IN TLSA for both directions
Kim Alvefur <zash@zash.se>
parents: 1344
diff changeset
100 function module.add_host(module)
1394
50f986deb3f7 mod_s2s_auth_dane: Launch DANE queries when sending or receiving stream-features instead of monkeypatching s2sout.lib
Kim Alvefur <zash@zash.se>
parents: 1392
diff changeset
101 local function on_new_s2s(event)
1367
103d685e2153 mod_s2s_auth_dane: Pause s2sin while doing SRV and TLSA lookups, fixes race condition (Can haz util.async plz)
Kim Alvefur <zash@zash.se>
parents: 1362
diff changeset
102 local host_session = event.origin;
1394
50f986deb3f7 mod_s2s_auth_dane: Launch DANE queries when sending or receiving stream-features instead of monkeypatching s2sout.lib
Kim Alvefur <zash@zash.se>
parents: 1392
diff changeset
103 if host_session.type == "s2sout" or host_session.type == "s2sin" or host_session.dane ~= nil then return end -- Already authenticated
1367
103d685e2153 mod_s2s_auth_dane: Pause s2sin while doing SRV and TLSA lookups, fixes race condition (Can haz util.async plz)
Kim Alvefur <zash@zash.se>
parents: 1362
diff changeset
104 host_session.log("debug", "Pausing connection until DANE lookup is completed");
103d685e2153 mod_s2s_auth_dane: Pause s2sin while doing SRV and TLSA lookups, fixes race condition (Can haz util.async plz)
Kim Alvefur <zash@zash.se>
parents: 1362
diff changeset
105 host_session.conn:pause()
103d685e2153 mod_s2s_auth_dane: Pause s2sin while doing SRV and TLSA lookups, fixes race condition (Can haz util.async plz)
Kim Alvefur <zash@zash.se>
parents: 1362
diff changeset
106 local function resume()
1383
465e5d79551b mod_s2s_auth_dane: Improve debug message and log it on the session
Kim Alvefur <zash@zash.se>
parents: 1370
diff changeset
107 host_session.log("debug", "DANE lookup completed, resuming connection");
1367
103d685e2153 mod_s2s_auth_dane: Pause s2sin while doing SRV and TLSA lookups, fixes race condition (Can haz util.async plz)
Kim Alvefur <zash@zash.se>
parents: 1362
diff changeset
108 host_session.conn:resume()
103d685e2153 mod_s2s_auth_dane: Pause s2sin while doing SRV and TLSA lookups, fixes race condition (Can haz util.async plz)
Kim Alvefur <zash@zash.se>
parents: 1362
diff changeset
109 end
103d685e2153 mod_s2s_auth_dane: Pause s2sin while doing SRV and TLSA lookups, fixes race condition (Can haz util.async plz)
Kim Alvefur <zash@zash.se>
parents: 1362
diff changeset
110 if not dane_lookup(host_session, resume) then
103d685e2153 mod_s2s_auth_dane: Pause s2sin while doing SRV and TLSA lookups, fixes race condition (Can haz util.async plz)
Kim Alvefur <zash@zash.se>
parents: 1362
diff changeset
111 resume();
103d685e2153 mod_s2s_auth_dane: Pause s2sin while doing SRV and TLSA lookups, fixes race condition (Can haz util.async plz)
Kim Alvefur <zash@zash.se>
parents: 1362
diff changeset
112 end
1394
50f986deb3f7 mod_s2s_auth_dane: Launch DANE queries when sending or receiving stream-features instead of monkeypatching s2sout.lib
Kim Alvefur <zash@zash.se>
parents: 1392
diff changeset
113 end
50f986deb3f7 mod_s2s_auth_dane: Launch DANE queries when sending or receiving stream-features instead of monkeypatching s2sout.lib
Kim Alvefur <zash@zash.se>
parents: 1392
diff changeset
114
50f986deb3f7 mod_s2s_auth_dane: Launch DANE queries when sending or receiving stream-features instead of monkeypatching s2sout.lib
Kim Alvefur <zash@zash.se>
parents: 1392
diff changeset
115 -- New outgoing connections
50f986deb3f7 mod_s2s_auth_dane: Launch DANE queries when sending or receiving stream-features instead of monkeypatching s2sout.lib
Kim Alvefur <zash@zash.se>
parents: 1392
diff changeset
116 module:hook("stanza/http://etherx.jabber.org/streams:features", on_new_s2s, 501);
50f986deb3f7 mod_s2s_auth_dane: Launch DANE queries when sending or receiving stream-features instead of monkeypatching s2sout.lib
Kim Alvefur <zash@zash.se>
parents: 1392
diff changeset
117 module:hook("s2sout-authenticate-legacy", on_new_s2s, 200);
50f986deb3f7 mod_s2s_auth_dane: Launch DANE queries when sending or receiving stream-features instead of monkeypatching s2sout.lib
Kim Alvefur <zash@zash.se>
parents: 1392
diff changeset
118
50f986deb3f7 mod_s2s_auth_dane: Launch DANE queries when sending or receiving stream-features instead of monkeypatching s2sout.lib
Kim Alvefur <zash@zash.se>
parents: 1392
diff changeset
119 -- New incoming connections
50f986deb3f7 mod_s2s_auth_dane: Launch DANE queries when sending or receiving stream-features instead of monkeypatching s2sout.lib
Kim Alvefur <zash@zash.se>
parents: 1392
diff changeset
120 module:hook("s2s-stream-features", on_new_s2s, 10);
1347
52b419885f0a mod_s2s_auth_dane: Simplify, but diverge from DANE-SRV draft. Will now look for _xmpp-server.example.com IN TLSA for both directions
Kim Alvefur <zash@zash.se>
parents: 1344
diff changeset
121
52b419885f0a mod_s2s_auth_dane: Simplify, but diverge from DANE-SRV draft. Will now look for _xmpp-server.example.com IN TLSA for both directions
Kim Alvefur <zash@zash.se>
parents: 1344
diff changeset
122 module:hook("s2s-authenticated", function(event)
52b419885f0a mod_s2s_auth_dane: Simplify, but diverge from DANE-SRV draft. Will now look for _xmpp-server.example.com IN TLSA for both directions
Kim Alvefur <zash@zash.se>
parents: 1344
diff changeset
123 local session = event.session;
52b419885f0a mod_s2s_auth_dane: Simplify, but diverge from DANE-SRV draft. Will now look for _xmpp-server.example.com IN TLSA for both directions
Kim Alvefur <zash@zash.se>
parents: 1344
diff changeset
124 if session.dane and not session.secure then
52b419885f0a mod_s2s_auth_dane: Simplify, but diverge from DANE-SRV draft. Will now look for _xmpp-server.example.com IN TLSA for both directions
Kim Alvefur <zash@zash.se>
parents: 1344
diff changeset
125 -- TLSA record but no TLS, not ok.
52b419885f0a mod_s2s_auth_dane: Simplify, but diverge from DANE-SRV draft. Will now look for _xmpp-server.example.com IN TLSA for both directions
Kim Alvefur <zash@zash.se>
parents: 1344
diff changeset
126 -- TODO Optional?
52b419885f0a mod_s2s_auth_dane: Simplify, but diverge from DANE-SRV draft. Will now look for _xmpp-server.example.com IN TLSA for both directions
Kim Alvefur <zash@zash.se>
parents: 1344
diff changeset
127 -- Bogus replies should trigger this path
52b419885f0a mod_s2s_auth_dane: Simplify, but diverge from DANE-SRV draft. Will now look for _xmpp-server.example.com IN TLSA for both directions
Kim Alvefur <zash@zash.se>
parents: 1344
diff changeset
128 -- How does this interact with Dialback?
52b419885f0a mod_s2s_auth_dane: Simplify, but diverge from DANE-SRV draft. Will now look for _xmpp-server.example.com IN TLSA for both directions
Kim Alvefur <zash@zash.se>
parents: 1344
diff changeset
129 session:close({
52b419885f0a mod_s2s_auth_dane: Simplify, but diverge from DANE-SRV draft. Will now look for _xmpp-server.example.com IN TLSA for both directions
Kim Alvefur <zash@zash.se>
parents: 1344
diff changeset
130 condition = "policy-violation",
52b419885f0a mod_s2s_auth_dane: Simplify, but diverge from DANE-SRV draft. Will now look for _xmpp-server.example.com IN TLSA for both directions
Kim Alvefur <zash@zash.se>
parents: 1344
diff changeset
131 text = "Encrypted server-to-server communication is required but was not "
52b419885f0a mod_s2s_auth_dane: Simplify, but diverge from DANE-SRV draft. Will now look for _xmpp-server.example.com IN TLSA for both directions
Kim Alvefur <zash@zash.se>
parents: 1344
diff changeset
132 ..((session.direction == "outgoing" and "offered") or "used")
52b419885f0a mod_s2s_auth_dane: Simplify, but diverge from DANE-SRV draft. Will now look for _xmpp-server.example.com IN TLSA for both directions
Kim Alvefur <zash@zash.se>
parents: 1344
diff changeset
133 });
52b419885f0a mod_s2s_auth_dane: Simplify, but diverge from DANE-SRV draft. Will now look for _xmpp-server.example.com IN TLSA for both directions
Kim Alvefur <zash@zash.se>
parents: 1344
diff changeset
134 return false;
52b419885f0a mod_s2s_auth_dane: Simplify, but diverge from DANE-SRV draft. Will now look for _xmpp-server.example.com IN TLSA for both directions
Kim Alvefur <zash@zash.se>
parents: 1344
diff changeset
135 end
1392
d99c10fc4d19 mod_s2s_auth_dane: Clean up no longer needed DNS replies
Kim Alvefur <zash@zash.se>
parents: 1391
diff changeset
136 -- Cleanup
d99c10fc4d19 mod_s2s_auth_dane: Clean up no longer needed DNS replies
Kim Alvefur <zash@zash.se>
parents: 1391
diff changeset
137 session.dane = nil;
d99c10fc4d19 mod_s2s_auth_dane: Clean up no longer needed DNS replies
Kim Alvefur <zash@zash.se>
parents: 1391
diff changeset
138 session.srv_hosts = nil;
1347
52b419885f0a mod_s2s_auth_dane: Simplify, but diverge from DANE-SRV draft. Will now look for _xmpp-server.example.com IN TLSA for both directions
Kim Alvefur <zash@zash.se>
parents: 1344
diff changeset
139 end);
1258
fc82d8eded7d mod_s2s_auth_dane: Experimental DANE implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
140 end
fc82d8eded7d mod_s2s_auth_dane: Experimental DANE implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
141
1389
6bd9681d54b7 mod_s2s_auth_dane: Break out DANE check into a function
Kim Alvefur <zash@zash.se>
parents: 1383
diff changeset
142 local function one_dane_check(tlsa, cert)
6bd9681d54b7 mod_s2s_auth_dane: Break out DANE check into a function
Kim Alvefur <zash@zash.se>
parents: 1383
diff changeset
143 local select, match, certdata = tlsa.select, tlsa.match;
6bd9681d54b7 mod_s2s_auth_dane: Break out DANE check into a function
Kim Alvefur <zash@zash.se>
parents: 1383
diff changeset
144
6bd9681d54b7 mod_s2s_auth_dane: Break out DANE check into a function
Kim Alvefur <zash@zash.se>
parents: 1383
diff changeset
145 if select == 0 then
6bd9681d54b7 mod_s2s_auth_dane: Break out DANE check into a function
Kim Alvefur <zash@zash.se>
parents: 1383
diff changeset
146 certdata = pem2der(cert:pem());
6bd9681d54b7 mod_s2s_auth_dane: Break out DANE check into a function
Kim Alvefur <zash@zash.se>
parents: 1383
diff changeset
147 elseif select == 1 and cert.pubkey then
6bd9681d54b7 mod_s2s_auth_dane: Break out DANE check into a function
Kim Alvefur <zash@zash.se>
parents: 1383
diff changeset
148 certdata = pem2der(cert:pubkey());
6bd9681d54b7 mod_s2s_auth_dane: Break out DANE check into a function
Kim Alvefur <zash@zash.se>
parents: 1383
diff changeset
149 else
6bd9681d54b7 mod_s2s_auth_dane: Break out DANE check into a function
Kim Alvefur <zash@zash.se>
parents: 1383
diff changeset
150 module:log("warn", "DANE selector %s is unsupported", tlsa:getSelector() or select);
6bd9681d54b7 mod_s2s_auth_dane: Break out DANE check into a function
Kim Alvefur <zash@zash.se>
parents: 1383
diff changeset
151 return;
6bd9681d54b7 mod_s2s_auth_dane: Break out DANE check into a function
Kim Alvefur <zash@zash.se>
parents: 1383
diff changeset
152 end
6bd9681d54b7 mod_s2s_auth_dane: Break out DANE check into a function
Kim Alvefur <zash@zash.se>
parents: 1383
diff changeset
153
6bd9681d54b7 mod_s2s_auth_dane: Break out DANE check into a function
Kim Alvefur <zash@zash.se>
parents: 1383
diff changeset
154 if match == 1 then
6bd9681d54b7 mod_s2s_auth_dane: Break out DANE check into a function
Kim Alvefur <zash@zash.se>
parents: 1383
diff changeset
155 certdata = hashes.sha256(certdata);
6bd9681d54b7 mod_s2s_auth_dane: Break out DANE check into a function
Kim Alvefur <zash@zash.se>
parents: 1383
diff changeset
156 elseif match == 2 then
6bd9681d54b7 mod_s2s_auth_dane: Break out DANE check into a function
Kim Alvefur <zash@zash.se>
parents: 1383
diff changeset
157 certdata = hashes.sha512(certdata);
6bd9681d54b7 mod_s2s_auth_dane: Break out DANE check into a function
Kim Alvefur <zash@zash.se>
parents: 1383
diff changeset
158 elseif match ~= 0 then
6bd9681d54b7 mod_s2s_auth_dane: Break out DANE check into a function
Kim Alvefur <zash@zash.se>
parents: 1383
diff changeset
159 module:log("warn", "DANE match rule %s is unsupported", tlsa:getMatchType() or match);
6bd9681d54b7 mod_s2s_auth_dane: Break out DANE check into a function
Kim Alvefur <zash@zash.se>
parents: 1383
diff changeset
160 return;
6bd9681d54b7 mod_s2s_auth_dane: Break out DANE check into a function
Kim Alvefur <zash@zash.se>
parents: 1383
diff changeset
161 end
6bd9681d54b7 mod_s2s_auth_dane: Break out DANE check into a function
Kim Alvefur <zash@zash.se>
parents: 1383
diff changeset
162
6bd9681d54b7 mod_s2s_auth_dane: Break out DANE check into a function
Kim Alvefur <zash@zash.se>
parents: 1383
diff changeset
163 return certdata == tlsa.data;
6bd9681d54b7 mod_s2s_auth_dane: Break out DANE check into a function
Kim Alvefur <zash@zash.se>
parents: 1383
diff changeset
164 end
6bd9681d54b7 mod_s2s_auth_dane: Break out DANE check into a function
Kim Alvefur <zash@zash.se>
parents: 1383
diff changeset
165
1258
fc82d8eded7d mod_s2s_auth_dane: Experimental DANE implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
166 module:hook("s2s-check-certificate", function(event)
fc82d8eded7d mod_s2s_auth_dane: Experimental DANE implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
167 local session, cert = event.session, event.cert;
1347
52b419885f0a mod_s2s_auth_dane: Simplify, but diverge from DANE-SRV draft. Will now look for _xmpp-server.example.com IN TLSA for both directions
Kim Alvefur <zash@zash.se>
parents: 1344
diff changeset
168 local dane = session.dane;
52b419885f0a mod_s2s_auth_dane: Simplify, but diverge from DANE-SRV draft. Will now look for _xmpp-server.example.com IN TLSA for both directions
Kim Alvefur <zash@zash.se>
parents: 1344
diff changeset
169 if type(dane) == "table" then
1389
6bd9681d54b7 mod_s2s_auth_dane: Break out DANE check into a function
Kim Alvefur <zash@zash.se>
parents: 1383
diff changeset
170 local use, tlsa, match_found, supported_found, is_match;
1347
52b419885f0a mod_s2s_auth_dane: Simplify, but diverge from DANE-SRV draft. Will now look for _xmpp-server.example.com IN TLSA for both directions
Kim Alvefur <zash@zash.se>
parents: 1344
diff changeset
171 for i = 1, #dane do
52b419885f0a mod_s2s_auth_dane: Simplify, but diverge from DANE-SRV draft. Will now look for _xmpp-server.example.com IN TLSA for both directions
Kim Alvefur <zash@zash.se>
parents: 1344
diff changeset
172 tlsa = dane[i].tlsa;
1335
faf4bd226cad mod_s2s_auth_dane: Improve logging
Kim Alvefur <zash@zash.se>
parents: 1334
diff changeset
173 module:log("debug", "TLSA %s %s %s %d bytes of data", tlsa:getUsage(), tlsa:getSelector(), tlsa:getMatchType(), #tlsa.data);
1389
6bd9681d54b7 mod_s2s_auth_dane: Break out DANE check into a function
Kim Alvefur <zash@zash.se>
parents: 1383
diff changeset
174 use = tlsa.use;
1258
fc82d8eded7d mod_s2s_auth_dane: Experimental DANE implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
175
1348
6191613959dc mod_s2s_auth_dane: Make supported DANE usages configurable, default to DANE-EE
Kim Alvefur <zash@zash.se>
parents: 1347
diff changeset
176 if enabled_uses:contains(use) then
6191613959dc mod_s2s_auth_dane: Make supported DANE usages configurable, default to DANE-EE
Kim Alvefur <zash@zash.se>
parents: 1347
diff changeset
177 -- PKIX-EE or DANE-EE
6191613959dc mod_s2s_auth_dane: Make supported DANE usages configurable, default to DANE-EE
Kim Alvefur <zash@zash.se>
parents: 1347
diff changeset
178 if use == 1 or use == 3 then
1389
6bd9681d54b7 mod_s2s_auth_dane: Break out DANE check into a function
Kim Alvefur <zash@zash.se>
parents: 1383
diff changeset
179 -- Should we check if the cert subject matches?
6bd9681d54b7 mod_s2s_auth_dane: Break out DANE check into a function
Kim Alvefur <zash@zash.se>
parents: 1383
diff changeset
180 is_match = one_dane_check(tlsa, cert);
6bd9681d54b7 mod_s2s_auth_dane: Break out DANE check into a function
Kim Alvefur <zash@zash.se>
parents: 1383
diff changeset
181 if is_match ~= nil then
6bd9681d54b7 mod_s2s_auth_dane: Break out DANE check into a function
Kim Alvefur <zash@zash.se>
parents: 1383
diff changeset
182 supported_found = true;
1348
6191613959dc mod_s2s_auth_dane: Make supported DANE usages configurable, default to DANE-EE
Kim Alvefur <zash@zash.se>
parents: 1347
diff changeset
183 end
1389
6bd9681d54b7 mod_s2s_auth_dane: Break out DANE check into a function
Kim Alvefur <zash@zash.se>
parents: 1383
diff changeset
184 if is_match then
1348
6191613959dc mod_s2s_auth_dane: Make supported DANE usages configurable, default to DANE-EE
Kim Alvefur <zash@zash.se>
parents: 1347
diff changeset
185 (session.log or module._log)("info", "DANE validation successful");
6191613959dc mod_s2s_auth_dane: Make supported DANE usages configurable, default to DANE-EE
Kim Alvefur <zash@zash.se>
parents: 1347
diff changeset
186 session.cert_identity_status = "valid";
6191613959dc mod_s2s_auth_dane: Make supported DANE usages configurable, default to DANE-EE
Kim Alvefur <zash@zash.se>
parents: 1347
diff changeset
187 if use == 3 then -- DANE-EE, chain status equals DNSSEC chain status
6191613959dc mod_s2s_auth_dane: Make supported DANE usages configurable, default to DANE-EE
Kim Alvefur <zash@zash.se>
parents: 1347
diff changeset
188 session.cert_chain_status = "valid";
6191613959dc mod_s2s_auth_dane: Make supported DANE usages configurable, default to DANE-EE
Kim Alvefur <zash@zash.se>
parents: 1347
diff changeset
189 -- for usage 1, PKIX-EE, the chain has to be valid already
6191613959dc mod_s2s_auth_dane: Make supported DANE usages configurable, default to DANE-EE
Kim Alvefur <zash@zash.se>
parents: 1347
diff changeset
190 end
6191613959dc mod_s2s_auth_dane: Make supported DANE usages configurable, default to DANE-EE
Kim Alvefur <zash@zash.se>
parents: 1347
diff changeset
191 match_found = true;
6191613959dc mod_s2s_auth_dane: Make supported DANE usages configurable, default to DANE-EE
Kim Alvefur <zash@zash.se>
parents: 1347
diff changeset
192 break;
1258
fc82d8eded7d mod_s2s_auth_dane: Experimental DANE implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
193 end
fc82d8eded7d mod_s2s_auth_dane: Experimental DANE implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
194 end
fc82d8eded7d mod_s2s_auth_dane: Experimental DANE implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
195 end
fc82d8eded7d mod_s2s_auth_dane: Experimental DANE implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
196 end
1347
52b419885f0a mod_s2s_auth_dane: Simplify, but diverge from DANE-SRV draft. Will now look for _xmpp-server.example.com IN TLSA for both directions
Kim Alvefur <zash@zash.se>
parents: 1344
diff changeset
197 if supported_found and not match_found or dane.bogus then
1332
08a0241f5d2c mod_s2s_auth_dane: Add some comments
Kim Alvefur <zash@zash.se>
parents: 1330
diff changeset
198 -- No TLSA matched or response was bogus
1265
020165014e56 mod_s2s_auth_dane: Fix wording on validation failure
Kim Alvefur <zash@zash.se>
parents: 1262
diff changeset
199 (session.log or module._log)("warn", "DANE validation failed");
1262
1e84eebf3f46 mod_s2s_auth_dane: Invalidate trust if there are TLSA records but no matches, or bogus results
Kim Alvefur <zash@zash.se>
parents: 1261
diff changeset
200 session.cert_identity_status = "invalid";
1e84eebf3f46 mod_s2s_auth_dane: Invalidate trust if there are TLSA records but no matches, or bogus results
Kim Alvefur <zash@zash.se>
parents: 1261
diff changeset
201 session.cert_chain_status = "invalid";
1e84eebf3f46 mod_s2s_auth_dane: Invalidate trust if there are TLSA records but no matches, or bogus results
Kim Alvefur <zash@zash.se>
parents: 1261
diff changeset
202 end
1370
e3fe6c749bc3 mod_s2s_auth_dane: Merge functionality from mod_s2s_auth_dnssec_srv
Kim Alvefur <zash@zash.se>
parents: 1368
diff changeset
203 else
e3fe6c749bc3 mod_s2s_auth_dane: Merge functionality from mod_s2s_auth_dnssec_srv
Kim Alvefur <zash@zash.se>
parents: 1368
diff changeset
204 if session.cert_chain_status == "valid" and session.cert_identity_status ~= "valid"
e3fe6c749bc3 mod_s2s_auth_dane: Merge functionality from mod_s2s_auth_dnssec_srv
Kim Alvefur <zash@zash.se>
parents: 1368
diff changeset
205 and session.srv_hosts.answer and session.srv_hosts.answer.secure then
e3fe6c749bc3 mod_s2s_auth_dane: Merge functionality from mod_s2s_auth_dnssec_srv
Kim Alvefur <zash@zash.se>
parents: 1368
diff changeset
206 local srv_hosts, srv_choice, srv_target = session.srv_hosts, session.srv_choice;
e3fe6c749bc3 mod_s2s_auth_dane: Merge functionality from mod_s2s_auth_dnssec_srv
Kim Alvefur <zash@zash.se>
parents: 1368
diff changeset
207 for i = srv_choice or 1, srv_choice or #srv_hosts do
e3fe6c749bc3 mod_s2s_auth_dane: Merge functionality from mod_s2s_auth_dnssec_srv
Kim Alvefur <zash@zash.se>
parents: 1368
diff changeset
208 srv_target = nameprep(idna_to_unicode(session.srv_hosts[i].target:gsub("%.?$","")));
e3fe6c749bc3 mod_s2s_auth_dane: Merge functionality from mod_s2s_auth_dnssec_srv
Kim Alvefur <zash@zash.se>
parents: 1368
diff changeset
209 (session.log or module._log)("debug", "Comparing certificate with Secure SRV target %s", srv_target);
e3fe6c749bc3 mod_s2s_auth_dane: Merge functionality from mod_s2s_auth_dnssec_srv
Kim Alvefur <zash@zash.se>
parents: 1368
diff changeset
210 if srv_target and cert_verify_identity(srv_target, "xmpp-server", cert) then
e3fe6c749bc3 mod_s2s_auth_dane: Merge functionality from mod_s2s_auth_dnssec_srv
Kim Alvefur <zash@zash.se>
parents: 1368
diff changeset
211 (session.log or module._log)("info", "Certificate matches Secure SRV target %s", srv_target);
e3fe6c749bc3 mod_s2s_auth_dane: Merge functionality from mod_s2s_auth_dnssec_srv
Kim Alvefur <zash@zash.se>
parents: 1368
diff changeset
212 session.cert_identity_status = "valid";
e3fe6c749bc3 mod_s2s_auth_dane: Merge functionality from mod_s2s_auth_dnssec_srv
Kim Alvefur <zash@zash.se>
parents: 1368
diff changeset
213 return;
e3fe6c749bc3 mod_s2s_auth_dane: Merge functionality from mod_s2s_auth_dnssec_srv
Kim Alvefur <zash@zash.se>
parents: 1368
diff changeset
214 end
e3fe6c749bc3 mod_s2s_auth_dane: Merge functionality from mod_s2s_auth_dnssec_srv
Kim Alvefur <zash@zash.se>
parents: 1368
diff changeset
215 end
e3fe6c749bc3 mod_s2s_auth_dane: Merge functionality from mod_s2s_auth_dnssec_srv
Kim Alvefur <zash@zash.se>
parents: 1368
diff changeset
216 end
1258
fc82d8eded7d mod_s2s_auth_dane: Experimental DANE implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
217 end
fc82d8eded7d mod_s2s_auth_dane: Experimental DANE implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
218 end);
fc82d8eded7d mod_s2s_auth_dane: Experimental DANE implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
219