Mercurial > prosody-modules

annotate mod_s2s_auth_dane/mod_s2s_auth_dane.lua @ 5818:d3b69859553a

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
mod_password_policy: Change error type from 'cancel' to 'modify' This makes more sense, as the problem relates to the data that has been entered, and therefore the request could be retried with different data.
author Matthew Wild <mwild1@gmail.com>
date Mon, 08 Jan 2024 17:28:39 +0000
parents 35381608d323
children
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
1758
7ba877e2d660 mod_s2s_auth_dane: Ignore mutating of the 'module' global, that is ok in prosody plugins [luacheck]
Kim Alvefur <zash@zash.se>
parents: 1757
diff changeset
17 --
7ba877e2d660 mod_s2s_auth_dane: Ignore mutating of the 'module' global, that is ok in prosody plugins [luacheck]
Kim Alvefur <zash@zash.se>
parents: 1757
diff changeset
18 -- luacheck: ignore module
1258
fc82d8eded7d mod_s2s_auth_dane: Experimental DANE implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
19
fc82d8eded7d mod_s2s_auth_dane: Experimental DANE implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
20 module:set_global();
fc82d8eded7d mod_s2s_auth_dane: Experimental DANE implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
21
2197
90a444ccaa8e mod_s2s_auth_dane: Use util.async if available (current prosody trunk)
Kim Alvefur <zash@zash.se>
parents: 2185
diff changeset
22 local have_async, async = pcall(require, "util.async");
1626
aed20f9e78c8 mod_s2s_auth_dane: Comments and cleanup
Kim Alvefur <zash@zash.se>
parents: 1507
diff changeset
23 local noop = function () end
4491
35381608d323 mod_s2s_auth_dane: Fix traceback in DANE-TA check because unpack() moved
Kim Alvefur <zash@zash.se>
parents: 4490
diff changeset
24 local unpack = table.unpack or _G.unpack;
1348
6191613959dc mod_s2s_auth_dane: Make supported DANE usages configurable, default to DANE-EE
Kim Alvefur <zash@zash.se>
parents: 1347
diff changeset
25 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
26 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
27 local set = require"util.set";
1258
fc82d8eded7d mod_s2s_auth_dane: Experimental DANE implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
28 local dns_lookup = require"net.adns".lookup;
fc82d8eded7d mod_s2s_auth_dane: Experimental DANE implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
29 local hashes = require"util.hashes";
1412
d85695be0441 Backout 33f132c3f4b7 until 0.10
Kim Alvefur <zash@zash.se>
parents: 1411
diff changeset
30 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
31 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
32 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
33 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
34 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
35
1410
f4e497a53c6e mod_s2s_auth_dane: Change how TLSA support is detected
Kim Alvefur <zash@zash.se>
parents: 1409
diff changeset
36 do
f4e497a53c6e mod_s2s_auth_dane: Change how TLSA support is detected
Kim Alvefur <zash@zash.se>
parents: 1409
diff changeset
37 local net_dns = require"net.dns";
f4e497a53c6e mod_s2s_auth_dane: Change how TLSA support is detected
Kim Alvefur <zash@zash.se>
parents: 1409
diff changeset
38 if not net_dns.types or not net_dns.types[52] then
f4e497a53c6e mod_s2s_auth_dane: Change how TLSA support is detected
Kim Alvefur <zash@zash.se>
parents: 1409
diff changeset
39 module:log("error", "No TLSA support available, DANE will not be supported");
f4e497a53c6e mod_s2s_auth_dane: Change how TLSA support is detected
Kim Alvefur <zash@zash.se>
parents: 1409
diff changeset
40 return
f4e497a53c6e mod_s2s_auth_dane: Change how TLSA support is detected
Kim Alvefur <zash@zash.se>
parents: 1409
diff changeset
41 end
1358
497e1df4b7ee mod_s2s_auth_dane: Abort module loading if luaunbound is unavailable
Kim Alvefur <zash@zash.se>
parents: 1356
diff changeset
42 end
497e1df4b7ee mod_s2s_auth_dane: Abort module loading if luaunbound is unavailable
Kim Alvefur <zash@zash.se>
parents: 1356
diff changeset
43
1412
d85695be0441 Backout 33f132c3f4b7 until 0.10
Kim Alvefur <zash@zash.se>
parents: 1411
diff changeset
44 local pat = "%-%-%-%-%-BEGIN ([A-Z ]+)%-%-%-%-%-\r?\n"..
d85695be0441 Backout 33f132c3f4b7 until 0.10
Kim Alvefur <zash@zash.se>
parents: 1411
diff changeset
45 "([0-9A-Za-z=+/\r\n]*)\r?\n%-%-%-%-%-END %1%-%-%-%-%-";
d85695be0441 Backout 33f132c3f4b7 until 0.10
Kim Alvefur <zash@zash.se>
parents: 1411
diff changeset
46 local function pem2der(pem)
d85695be0441 Backout 33f132c3f4b7 until 0.10
Kim Alvefur <zash@zash.se>
parents: 1411
diff changeset
47 local typ, data = pem:match(pat);
d85695be0441 Backout 33f132c3f4b7 until 0.10
Kim Alvefur <zash@zash.se>
parents: 1411
diff changeset
48 if typ and data then
d85695be0441 Backout 33f132c3f4b7 until 0.10
Kim Alvefur <zash@zash.se>
parents: 1411
diff changeset
49 return base64.decode(data), typ;
d85695be0441 Backout 33f132c3f4b7 until 0.10
Kim Alvefur <zash@zash.se>
parents: 1411
diff changeset
50 end
d85695be0441 Backout 33f132c3f4b7 until 0.10
Kim Alvefur <zash@zash.se>
parents: 1411
diff changeset
51 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
52 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
53
6191613959dc mod_s2s_auth_dane: Make supported DANE usages configurable, default to DANE-EE
Kim Alvefur <zash@zash.se>
parents: 1347
diff changeset
54 local implemented_uses = set.new { "DANE-EE", "PKIX-EE" };
1502
72ef98818b90 mod_s2s_auth_dane: Fix traceback caused by LuaSec not being loaded
Kim Alvefur <zash@zash.se>
parents: 1437
diff changeset
55 do
72ef98818b90 mod_s2s_auth_dane: Fix traceback caused by LuaSec not being loaded
Kim Alvefur <zash@zash.se>
parents: 1437
diff changeset
56 local cert_mt = debug.getregistry()["SSL:Certificate"];
72ef98818b90 mod_s2s_auth_dane: Fix traceback caused by LuaSec not being loaded
Kim Alvefur <zash@zash.se>
parents: 1437
diff changeset
57 if cert_mt and cert_mt.__index.issued then
72ef98818b90 mod_s2s_auth_dane: Fix traceback caused by LuaSec not being loaded
Kim Alvefur <zash@zash.se>
parents: 1437
diff changeset
58 -- Need cert:issued() for these
72ef98818b90 mod_s2s_auth_dane: Fix traceback caused by LuaSec not being loaded
Kim Alvefur <zash@zash.se>
parents: 1437
diff changeset
59 implemented_uses:add("DANE-TA");
72ef98818b90 mod_s2s_auth_dane: Fix traceback caused by LuaSec not being loaded
Kim Alvefur <zash@zash.se>
parents: 1437
diff changeset
60 implemented_uses:add("PKIX-CA");
72ef98818b90 mod_s2s_auth_dane: Fix traceback caused by LuaSec not being loaded
Kim Alvefur <zash@zash.se>
parents: 1437
diff changeset
61 else
2003
8ccf347c7753 mod_s2s_auth_dane: Warn only if there enabled uses that can't be supported
Kim Alvefur <zash@zash.se>
parents: 1972
diff changeset
62 module:log("debug", "The cert:issued() method is unavailable, DANE-TA and PKIX-CA can't be enabled");
1502
72ef98818b90 mod_s2s_auth_dane: Fix traceback caused by LuaSec not being loaded
Kim Alvefur <zash@zash.se>
parents: 1437
diff changeset
63 end
2032
6645838c6475 mod_s2s_auth_dane: Check if cert:pubkey() is available
Kim Alvefur <zash@zash.se>
parents: 2003
diff changeset
64 if not cert_mt.__index.pubkey then
2035
39774b078dde mod_s2s_auth_dane: Correct message about not being able to support SPKI
Kim Alvefur <zash@zash.se>
parents: 2032
diff changeset
65 module:log("debug", "The cert:pubkey() method is unavailable, the SPKI usage can't be supported");
2032
6645838c6475 mod_s2s_auth_dane: Check if cert:pubkey() is available
Kim Alvefur <zash@zash.se>
parents: 2003
diff changeset
66 end
1396
cf4e39334ef7 mod_s2s_auth_dane: Add support for DANE-TA and PKIX-CA (requires LuaSec changes)
Kim Alvefur <zash@zash.se>
parents: 1395
diff changeset
67 end
cf4e39334ef7 mod_s2s_auth_dane: Add support for DANE-TA and PKIX-CA (requires LuaSec changes)
Kim Alvefur <zash@zash.se>
parents: 1395
diff changeset
68 local configured_uses = module:get_option_set("dane_uses", { "DANE-EE", "DANE-TA" });
1348
6191613959dc mod_s2s_auth_dane: Make supported DANE usages configurable, default to DANE-EE
Kim Alvefur <zash@zash.se>
parents: 1347
diff changeset
69 local enabled_uses = set.intersection(implemented_uses, configured_uses) / function(use) return use_map[use] end;
2003
8ccf347c7753 mod_s2s_auth_dane: Warn only if there enabled uses that can't be supported
Kim Alvefur <zash@zash.se>
parents: 1972
diff changeset
70 local unsupported = configured_uses - implemented_uses;
8ccf347c7753 mod_s2s_auth_dane: Warn only if there enabled uses that can't be supported
Kim Alvefur <zash@zash.se>
parents: 1972
diff changeset
71 if not unsupported:empty() then
8ccf347c7753 mod_s2s_auth_dane: Warn only if there enabled uses that can't be supported
Kim Alvefur <zash@zash.se>
parents: 1972
diff changeset
72 module:log("warn", "Unable to support DANE uses %s", tostring(unsupported));
8ccf347c7753 mod_s2s_auth_dane: Warn only if there enabled uses that can't be supported
Kim Alvefur <zash@zash.se>
parents: 1972
diff changeset
73 end
1258
fc82d8eded7d mod_s2s_auth_dane: Experimental DANE implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
74
1626
aed20f9e78c8 mod_s2s_auth_dane: Comments and cleanup
Kim Alvefur <zash@zash.se>
parents: 1507
diff changeset
75 -- Find applicable TLSA records
aed20f9e78c8 mod_s2s_auth_dane: Comments and cleanup
Kim Alvefur <zash@zash.se>
parents: 1507
diff changeset
76 -- Takes a s2sin/out and a callback
aed20f9e78c8 mod_s2s_auth_dane: Comments and cleanup
Kim Alvefur <zash@zash.se>
parents: 1507
diff changeset
77 local function dane_lookup(host_session, cb)
aed20f9e78c8 mod_s2s_auth_dane: Comments and cleanup
Kim Alvefur <zash@zash.se>
parents: 1507
diff changeset
78 cb = cb or noop;
1970
5ea6f4e6fa8c mod_s2s_auth_dane: Log as much as possible through session logger instance
Kim Alvefur <zash@zash.se>
parents: 1963
diff changeset
79 local log = host_session.log or module._log;
1626
aed20f9e78c8 mod_s2s_auth_dane: Comments and cleanup
Kim Alvefur <zash@zash.se>
parents: 1507
diff changeset
80 if host_session.dane ~= nil then return end -- Has already done a lookup
aed20f9e78c8 mod_s2s_auth_dane: Comments and cleanup
Kim Alvefur <zash@zash.se>
parents: 1507
diff changeset
81
1351
a052740bbf48 mod_s2s_auth_dane: Back to _port._tcp.srvtarget.example.net
Kim Alvefur <zash@zash.se>
parents: 1350
diff changeset
82 if host_session.direction == "incoming" then
1674
7f4c64cfed09 mod_s2s_auth_dane: Abort earlier for sessions from hosts that don't say who they are
Kim Alvefur <zash@zash.se>
parents: 1673
diff changeset
83 if not host_session.from_host then
1970
5ea6f4e6fa8c mod_s2s_auth_dane: Log as much as possible through session logger instance
Kim Alvefur <zash@zash.se>
parents: 1963
diff changeset
84 log("debug", "Session doesn't have a 'from' host set");
1674
7f4c64cfed09 mod_s2s_auth_dane: Abort earlier for sessions from hosts that don't say who they are
Kim Alvefur <zash@zash.se>
parents: 1673
diff changeset
85 return;
7f4c64cfed09 mod_s2s_auth_dane: Abort earlier for sessions from hosts that don't say who they are
Kim Alvefur <zash@zash.se>
parents: 1673
diff changeset
86 end
1626
aed20f9e78c8 mod_s2s_auth_dane: Comments and cleanup
Kim Alvefur <zash@zash.se>
parents: 1507
diff changeset
87 -- We don't know what hostname or port to use for Incoming connections
aed20f9e78c8 mod_s2s_auth_dane: Comments and cleanup
Kim Alvefur <zash@zash.se>
parents: 1507
diff changeset
88 -- so we do a SRV lookup and then request TLSA records for each SRV
aed20f9e78c8 mod_s2s_auth_dane: Comments and cleanup
Kim Alvefur <zash@zash.se>
parents: 1507
diff changeset
89 -- Most servers will probably use the same certificate on outgoing
aed20f9e78c8 mod_s2s_auth_dane: Comments and cleanup
Kim Alvefur <zash@zash.se>
parents: 1507
diff changeset
90 -- and incoming connections, so this should work well
1362
920ac9a8480b mod_s2s_auth_dane: Fix tb when no hostname sent by remote
Kim Alvefur <zash@zash.se>
parents: 1359
diff changeset
91 local name = host_session.from_host and idna_to_ascii(host_session.from_host);
1626
aed20f9e78c8 mod_s2s_auth_dane: Comments and cleanup
Kim Alvefur <zash@zash.se>
parents: 1507
diff changeset
92 if not name then
1970
5ea6f4e6fa8c mod_s2s_auth_dane: Log as much as possible through session logger instance
Kim Alvefur <zash@zash.se>
parents: 1963
diff changeset
93 log("warn", "Could not convert '%s' to ASCII for DNS lookup", tostring(host_session.from_host));
1673
aac5e56615ce mod_s2s_auth_dane: Demote log message about failure to ASCII-ify hostname from error to warning
Kim Alvefur <zash@zash.se>
parents: 1652
diff changeset
94 return;
aac5e56615ce mod_s2s_auth_dane: Demote log message about failure to ASCII-ify hostname from error to warning
Kim Alvefur <zash@zash.se>
parents: 1652
diff changeset
95 end
1972
b10118d7c0df mod_s2s_auth_dane: More DNS related debug logging
Kim Alvefur <zash@zash.se>
parents: 1971
diff changeset
96 log("debug", "Querying SRV records from _xmpp-server._tcp.%s.", name);
1626
aed20f9e78c8 mod_s2s_auth_dane: Comments and cleanup
Kim Alvefur <zash@zash.se>
parents: 1507
diff changeset
97 host_session.dane = dns_lookup(function (answer, err)
aed20f9e78c8 mod_s2s_auth_dane: Comments and cleanup
Kim Alvefur <zash@zash.se>
parents: 1507
diff changeset
98 host_session.dane = false; -- Mark that we already did the lookup
aed20f9e78c8 mod_s2s_auth_dane: Comments and cleanup
Kim Alvefur <zash@zash.se>
parents: 1507
diff changeset
99
aed20f9e78c8 mod_s2s_auth_dane: Comments and cleanup
Kim Alvefur <zash@zash.se>
parents: 1507
diff changeset
100 if not answer then
1970
5ea6f4e6fa8c mod_s2s_auth_dane: Log as much as possible through session logger instance
Kim Alvefur <zash@zash.se>
parents: 1963
diff changeset
101 log("debug", "Resolver error: %s", tostring(err));
1626
aed20f9e78c8 mod_s2s_auth_dane: Comments and cleanup
Kim Alvefur <zash@zash.se>
parents: 1507
diff changeset
102 return cb(host_session);
aed20f9e78c8 mod_s2s_auth_dane: Comments and cleanup
Kim Alvefur <zash@zash.se>
parents: 1507
diff changeset
103 end
aed20f9e78c8 mod_s2s_auth_dane: Comments and cleanup
Kim Alvefur <zash@zash.se>
parents: 1507
diff changeset
104
1971
54405541d0ba mod_s2s_auth_dane: Abort on bogus reply to SRV lookup
Kim Alvefur <zash@zash.se>
parents: 1970
diff changeset
105 if answer.bogus then
54405541d0ba mod_s2s_auth_dane: Abort on bogus reply to SRV lookup
Kim Alvefur <zash@zash.se>
parents: 1970
diff changeset
106 log("warn", "Results are bogus!");
54405541d0ba mod_s2s_auth_dane: Abort on bogus reply to SRV lookup
Kim Alvefur <zash@zash.se>
parents: 1970
diff changeset
107 -- Bad sign, probably not a good idea to do any fallback here
54405541d0ba mod_s2s_auth_dane: Abort on bogus reply to SRV lookup
Kim Alvefur <zash@zash.se>
parents: 1970
diff changeset
108 host_session.dane = answer;
54405541d0ba mod_s2s_auth_dane: Abort on bogus reply to SRV lookup
Kim Alvefur <zash@zash.se>
parents: 1970
diff changeset
109 elseif not answer.secure then
1970
5ea6f4e6fa8c mod_s2s_auth_dane: Log as much as possible through session logger instance
Kim Alvefur <zash@zash.se>
parents: 1963
diff changeset
110 log("debug", "Results are not secure");
1626
aed20f9e78c8 mod_s2s_auth_dane: Comments and cleanup
Kim Alvefur <zash@zash.se>
parents: 1507
diff changeset
111 return cb(host_session);
aed20f9e78c8 mod_s2s_auth_dane: Comments and cleanup
Kim Alvefur <zash@zash.se>
parents: 1507
diff changeset
112 end
aed20f9e78c8 mod_s2s_auth_dane: Comments and cleanup
Kim Alvefur <zash@zash.se>
parents: 1507
diff changeset
113
1700
ab3175685f94 mod_s2s_auth_dane: Don't count number of RRs in DNS reply if the DNS lib already did
Kim Alvefur <zash@zash.se>
parents: 1674
diff changeset
114 local n = answer.n or #answer;
1626
aed20f9e78c8 mod_s2s_auth_dane: Comments and cleanup
Kim Alvefur <zash@zash.se>
parents: 1507
diff changeset
115 if n == 0 then
1943
7e04ca0aa757 mod_s2s_auth_dane: Support servers without SRV records by falling back to port 5269 and the bare hostname for TLSA lookups
Kim Alvefur <zash@zash.se>
parents: 1758
diff changeset
116 -- No SRV records, synthesize fallback host and port
7e04ca0aa757 mod_s2s_auth_dane: Support servers without SRV records by falling back to port 5269 and the bare hostname for TLSA lookups
Kim Alvefur <zash@zash.se>
parents: 1758
diff changeset
117 -- this may behave oddly for connections in the other direction if
7e04ca0aa757 mod_s2s_auth_dane: Support servers without SRV records by falling back to port 5269 and the bare hostname for TLSA lookups
Kim Alvefur <zash@zash.se>
parents: 1758
diff changeset
118 -- mod_s2s doesn't keep the answer around
7e04ca0aa757 mod_s2s_auth_dane: Support servers without SRV records by falling back to port 5269 and the bare hostname for TLSA lookups
Kim Alvefur <zash@zash.se>
parents: 1758
diff changeset
119 answer[1] = { srv = { target = name, port = 5269 } };
7e04ca0aa757 mod_s2s_auth_dane: Support servers without SRV records by falling back to port 5269 and the bare hostname for TLSA lookups
Kim Alvefur <zash@zash.se>
parents: 1758
diff changeset
120 n = 1;
7e04ca0aa757 mod_s2s_auth_dane: Support servers without SRV records by falling back to port 5269 and the bare hostname for TLSA lookups
Kim Alvefur <zash@zash.se>
parents: 1758
diff changeset
121 elseif n == 1 and answer[1].srv.target == '.' then
1626
aed20f9e78c8 mod_s2s_auth_dane: Comments and cleanup
Kim Alvefur <zash@zash.se>
parents: 1507
diff changeset
122 return cb(host_session); -- No service ... This shouldn't happen?
aed20f9e78c8 mod_s2s_auth_dane: Comments and cleanup
Kim Alvefur <zash@zash.se>
parents: 1507
diff changeset
123 end
1351
a052740bbf48 mod_s2s_auth_dane: Back to _port._tcp.srvtarget.example.net
Kim Alvefur <zash@zash.se>
parents: 1350
diff changeset
124 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
125 host_session.srv_hosts = srv_hosts;
1701
9b429fc9e8a0 mod_s2s_auth_dane: Simplify cases where there are only one SRV record
Kim Alvefur <zash@zash.se>
parents: 1700
diff changeset
126 local dane;
1351
a052740bbf48 mod_s2s_auth_dane: Back to _port._tcp.srvtarget.example.net
Kim Alvefur <zash@zash.se>
parents: 1350
diff changeset
127 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
128 t_insert(srv_hosts, record.srv);
1972
b10118d7c0df mod_s2s_auth_dane: More DNS related debug logging
Kim Alvefur <zash@zash.se>
parents: 1971
diff changeset
129 log("debug", "Querying TLSA record for %s:%d", record.srv.target, record.srv.port);
1351
a052740bbf48 mod_s2s_auth_dane: Back to _port._tcp.srvtarget.example.net
Kim Alvefur <zash@zash.se>
parents: 1350
diff changeset
130 dns_lookup(function(dane_answer)
1970
5ea6f4e6fa8c mod_s2s_auth_dane: Log as much as possible through session logger instance
Kim Alvefur <zash@zash.se>
parents: 1963
diff changeset
131 log("debug", "Got answer for %s:%d", record.srv.target, record.srv.port);
1351
a052740bbf48 mod_s2s_auth_dane: Back to _port._tcp.srvtarget.example.net
Kim Alvefur <zash@zash.se>
parents: 1350
diff changeset
132 n = n - 1;
1701
9b429fc9e8a0 mod_s2s_auth_dane: Simplify cases where there are only one SRV record
Kim Alvefur <zash@zash.se>
parents: 1700
diff changeset
133 -- There are three kinds of answers
9b429fc9e8a0 mod_s2s_auth_dane: Simplify cases where there are only one SRV record
Kim Alvefur <zash@zash.se>
parents: 1700
diff changeset
134 -- Insecure, Secure and Bogus
9b429fc9e8a0 mod_s2s_auth_dane: Simplify cases where there are only one SRV record
Kim Alvefur <zash@zash.se>
parents: 1700
diff changeset
135 --
9b429fc9e8a0 mod_s2s_auth_dane: Simplify cases where there are only one SRV record
Kim Alvefur <zash@zash.se>
parents: 1700
diff changeset
136 -- We collect Secure answers for later use
9b429fc9e8a0 mod_s2s_auth_dane: Simplify cases where there are only one SRV record
Kim Alvefur <zash@zash.se>
parents: 1700
diff changeset
137 --
9b429fc9e8a0 mod_s2s_auth_dane: Simplify cases where there are only one SRV record
Kim Alvefur <zash@zash.se>
parents: 1700
diff changeset
138 -- Insecure (legacy) answers are simply ignored
9b429fc9e8a0 mod_s2s_auth_dane: Simplify cases where there are only one SRV record
Kim Alvefur <zash@zash.se>
parents: 1700
diff changeset
139 --
9b429fc9e8a0 mod_s2s_auth_dane: Simplify cases where there are only one SRV record
Kim Alvefur <zash@zash.se>
parents: 1700
diff changeset
140 -- If we get a Bogus (dnssec error) reply, keep the
9b429fc9e8a0 mod_s2s_auth_dane: Simplify cases where there are only one SRV record
Kim Alvefur <zash@zash.se>
parents: 1700
diff changeset
141 -- status around. If there were only bogus replies, the
9b429fc9e8a0 mod_s2s_auth_dane: Simplify cases where there are only one SRV record
Kim Alvefur <zash@zash.se>
parents: 1700
diff changeset
142 -- connection will be aborted. If there were at least
9b429fc9e8a0 mod_s2s_auth_dane: Simplify cases where there are only one SRV record
Kim Alvefur <zash@zash.se>
parents: 1700
diff changeset
143 -- one non-Bogus reply, we proceed. If none of the
9b429fc9e8a0 mod_s2s_auth_dane: Simplify cases where there are only one SRV record
Kim Alvefur <zash@zash.se>
parents: 1700
diff changeset
144 -- replies matched, we consider the connection insecure.
9b429fc9e8a0 mod_s2s_auth_dane: Simplify cases where there are only one SRV record
Kim Alvefur <zash@zash.se>
parents: 1700
diff changeset
145
9b429fc9e8a0 mod_s2s_auth_dane: Simplify cases where there are only one SRV record
Kim Alvefur <zash@zash.se>
parents: 1700
diff changeset
146 if (dane_answer.bogus or dane_answer.secure) and not dane then
9b429fc9e8a0 mod_s2s_auth_dane: Simplify cases where there are only one SRV record
Kim Alvefur <zash@zash.se>
parents: 1700
diff changeset
147 -- The first answer we care about
9b429fc9e8a0 mod_s2s_auth_dane: Simplify cases where there are only one SRV record
Kim Alvefur <zash@zash.se>
parents: 1700
diff changeset
148 -- For services with only one SRV record, this will be the only one
1970
5ea6f4e6fa8c mod_s2s_auth_dane: Log as much as possible through session logger instance
Kim Alvefur <zash@zash.se>
parents: 1963
diff changeset
149 log("debug", "First secure (or bogus) TLSA")
1701
9b429fc9e8a0 mod_s2s_auth_dane: Simplify cases where there are only one SRV record
Kim Alvefur <zash@zash.se>
parents: 1700
diff changeset
150 dane = dane_answer;
9b429fc9e8a0 mod_s2s_auth_dane: Simplify cases where there are only one SRV record
Kim Alvefur <zash@zash.se>
parents: 1700
diff changeset
151 elseif dane_answer.bogus then
1970
5ea6f4e6fa8c mod_s2s_auth_dane: Log as much as possible through session logger instance
Kim Alvefur <zash@zash.se>
parents: 1963
diff changeset
152 log("debug", "Got additional bogus TLSA")
1626
aed20f9e78c8 mod_s2s_auth_dane: Comments and cleanup
Kim Alvefur <zash@zash.se>
parents: 1507
diff changeset
153 dane.bogus = dane_answer.bogus;
1351
a052740bbf48 mod_s2s_auth_dane: Back to _port._tcp.srvtarget.example.net
Kim Alvefur <zash@zash.se>
parents: 1350
diff changeset
154 elseif dane_answer.secure then
1970
5ea6f4e6fa8c mod_s2s_auth_dane: Log as much as possible through session logger instance
Kim Alvefur <zash@zash.se>
parents: 1963
diff changeset
155 log("debug", "Got additional secure TLSA")
1652
9a3d2f1479a4 mod_s2s_auth_dane: Cleanup [luacheck]
Kim Alvefur <zash@zash.se>
parents: 1642
diff changeset
156 for _, dane_record in ipairs(dane_answer) do
9a3d2f1479a4 mod_s2s_auth_dane: Cleanup [luacheck]
Kim Alvefur <zash@zash.se>
parents: 1642
diff changeset
157 t_insert(dane, dane_record);
1351
a052740bbf48 mod_s2s_auth_dane: Back to _port._tcp.srvtarget.example.net
Kim Alvefur <zash@zash.se>
parents: 1350
diff changeset
158 end
a052740bbf48 mod_s2s_auth_dane: Back to _port._tcp.srvtarget.example.net
Kim Alvefur <zash@zash.se>
parents: 1350
diff changeset
159 end
1626
aed20f9e78c8 mod_s2s_auth_dane: Comments and cleanup
Kim Alvefur <zash@zash.se>
parents: 1507
diff changeset
160 if n == 0 then
1701
9b429fc9e8a0 mod_s2s_auth_dane: Simplify cases where there are only one SRV record
Kim Alvefur <zash@zash.se>
parents: 1700
diff changeset
161 if dane then
9b429fc9e8a0 mod_s2s_auth_dane: Simplify cases where there are only one SRV record
Kim Alvefur <zash@zash.se>
parents: 1700
diff changeset
162 host_session.dane = dane;
9b429fc9e8a0 mod_s2s_auth_dane: Simplify cases where there are only one SRV record
Kim Alvefur <zash@zash.se>
parents: 1700
diff changeset
163 if #dane > 0 and dane.bogus then
9b429fc9e8a0 mod_s2s_auth_dane: Simplify cases where there are only one SRV record
Kim Alvefur <zash@zash.se>
parents: 1700
diff changeset
164 -- Got at least one non-bogus reply,
9b429fc9e8a0 mod_s2s_auth_dane: Simplify cases where there are only one SRV record
Kim Alvefur <zash@zash.se>
parents: 1700
diff changeset
165 -- This should trigger a failure if one of them did not match
1970
5ea6f4e6fa8c mod_s2s_auth_dane: Log as much as possible through session logger instance
Kim Alvefur <zash@zash.se>
parents: 1963
diff changeset
166 log("warn", "Ignoring bogus replies");
1701
9b429fc9e8a0 mod_s2s_auth_dane: Simplify cases where there are only one SRV record
Kim Alvefur <zash@zash.se>
parents: 1700
diff changeset
167 dane.bogus = nil;
9b429fc9e8a0 mod_s2s_auth_dane: Simplify cases where there are only one SRV record
Kim Alvefur <zash@zash.se>
parents: 1700
diff changeset
168 end
9b429fc9e8a0 mod_s2s_auth_dane: Simplify cases where there are only one SRV record
Kim Alvefur <zash@zash.se>
parents: 1700
diff changeset
169 if #dane == 0 and dane.bogus == nil then
9b429fc9e8a0 mod_s2s_auth_dane: Simplify cases where there are only one SRV record
Kim Alvefur <zash@zash.se>
parents: 1700
diff changeset
170 -- Got no usable data
9b429fc9e8a0 mod_s2s_auth_dane: Simplify cases where there are only one SRV record
Kim Alvefur <zash@zash.se>
parents: 1700
diff changeset
171 host_session.dane = false;
9b429fc9e8a0 mod_s2s_auth_dane: Simplify cases where there are only one SRV record
Kim Alvefur <zash@zash.se>
parents: 1700
diff changeset
172 end
1626
aed20f9e78c8 mod_s2s_auth_dane: Comments and cleanup
Kim Alvefur <zash@zash.se>
parents: 1507
diff changeset
173 end
aed20f9e78c8 mod_s2s_auth_dane: Comments and cleanup
Kim Alvefur <zash@zash.se>
parents: 1507
diff changeset
174 return cb(host_session);
aed20f9e78c8 mod_s2s_auth_dane: Comments and cleanup
Kim Alvefur <zash@zash.se>
parents: 1507
diff changeset
175 end
1351
a052740bbf48 mod_s2s_auth_dane: Back to _port._tcp.srvtarget.example.net
Kim Alvefur <zash@zash.se>
parents: 1350
diff changeset
176 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
177 end
a052740bbf48 mod_s2s_auth_dane: Back to _port._tcp.srvtarget.example.net
Kim Alvefur <zash@zash.se>
parents: 1350
diff changeset
178 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
179 return true;
a052740bbf48 mod_s2s_auth_dane: Back to _port._tcp.srvtarget.example.net
Kim Alvefur <zash@zash.se>
parents: 1350
diff changeset
180 elseif host_session.direction == "outgoing" then
1626
aed20f9e78c8 mod_s2s_auth_dane: Comments and cleanup
Kim Alvefur <zash@zash.se>
parents: 1507
diff changeset
181 -- Prosody has already done SRV lookups for outgoing session, so check if those are secure
1359
74769c0c79f8 mod_s2s_auth_dane: Verify that the SRV is secure
Kim Alvefur <zash@zash.se>
parents: 1358
diff changeset
182 local srv_hosts = host_session.srv_hosts;
1626
aed20f9e78c8 mod_s2s_auth_dane: Comments and cleanup
Kim Alvefur <zash@zash.se>
parents: 1507
diff changeset
183 if not ( srv_hosts and srv_hosts.answer and srv_hosts.answer.secure ) then
aed20f9e78c8 mod_s2s_auth_dane: Comments and cleanup
Kim Alvefur <zash@zash.se>
parents: 1507
diff changeset
184 return; -- No secure SRV records, fall back to non-DANE mode
1943
7e04ca0aa757 mod_s2s_auth_dane: Support servers without SRV records by falling back to port 5269 and the bare hostname for TLSA lookups
Kim Alvefur <zash@zash.se>
parents: 1758
diff changeset
185 -- Empty response were not kept by older mod_s2s/s2sout
1626
aed20f9e78c8 mod_s2s_auth_dane: Comments and cleanup
Kim Alvefur <zash@zash.se>
parents: 1507
diff changeset
186 end
aed20f9e78c8 mod_s2s_auth_dane: Comments and cleanup
Kim Alvefur <zash@zash.se>
parents: 1507
diff changeset
187 -- Do TLSA lookup for currently selected SRV record
1943
7e04ca0aa757 mod_s2s_auth_dane: Support servers without SRV records by falling back to port 5269 and the bare hostname for TLSA lookups
Kim Alvefur <zash@zash.se>
parents: 1758
diff changeset
188 local srv_choice = srv_hosts[host_session.srv_choice or 0] or { target = idna_to_ascii(host_session.to_host), port = 5269 };
1972
b10118d7c0df mod_s2s_auth_dane: More DNS related debug logging
Kim Alvefur <zash@zash.se>
parents: 1971
diff changeset
189 log("debug", "Querying TLSA record for %s:%d", srv_choice.target, srv_choice.port);
1351
a052740bbf48 mod_s2s_auth_dane: Back to _port._tcp.srvtarget.example.net
Kim Alvefur <zash@zash.se>
parents: 1350
diff changeset
190 host_session.dane = dns_lookup(function(answer)
1409
151aa00559d1 mod_s2s_auth_dane: Fix logic precedence issue
Kim Alvefur <zash@zash.se>
parents: 1396
diff changeset
191 if answer and ((answer.secure and #answer > 0) or answer.bogus) then
1351
a052740bbf48 mod_s2s_auth_dane: Back to _port._tcp.srvtarget.example.net
Kim Alvefur <zash@zash.se>
parents: 1350
diff changeset
192 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
193 else
a052740bbf48 mod_s2s_auth_dane: Back to _port._tcp.srvtarget.example.net
Kim Alvefur <zash@zash.se>
parents: 1350
diff changeset
194 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
195 end
a052740bbf48 mod_s2s_auth_dane: Back to _port._tcp.srvtarget.example.net
Kim Alvefur <zash@zash.se>
parents: 1350
diff changeset
196 host_session.dane = srv_choice.dane;
1626
aed20f9e78c8 mod_s2s_auth_dane: Comments and cleanup
Kim Alvefur <zash@zash.se>
parents: 1507
diff changeset
197 return cb(host_session);
1351
a052740bbf48 mod_s2s_auth_dane: Back to _port._tcp.srvtarget.example.net
Kim Alvefur <zash@zash.se>
parents: 1350
diff changeset
198 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
199 return true;
a052740bbf48 mod_s2s_auth_dane: Back to _port._tcp.srvtarget.example.net
Kim Alvefur <zash@zash.se>
parents: 1350
diff changeset
200 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
201 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
202
2185
2cbd7876ba14 mod_s2s_auth_dane: Move pausing code to a function
Kim Alvefur <zash@zash.se>
parents: 2184
diff changeset
203 local function pause(host_session)
2cbd7876ba14 mod_s2s_auth_dane: Move pausing code to a function
Kim Alvefur <zash@zash.se>
parents: 2184
diff changeset
204 host_session.log("debug", "Pausing connection until DANE lookup is completed");
2cbd7876ba14 mod_s2s_auth_dane: Move pausing code to a function
Kim Alvefur <zash@zash.se>
parents: 2184
diff changeset
205 host_session.conn:pause()
2cbd7876ba14 mod_s2s_auth_dane: Move pausing code to a function
Kim Alvefur <zash@zash.se>
parents: 2184
diff changeset
206 end
2cbd7876ba14 mod_s2s_auth_dane: Move pausing code to a function
Kim Alvefur <zash@zash.se>
parents: 2184
diff changeset
207
2184
7155ed1fb540 Backed out changeset f00cbfb812cd, it only half-worked and broke things
Kim Alvefur <zash@zash.se>
parents: 2182
diff changeset
208 local function resume(host_session)
7155ed1fb540 Backed out changeset f00cbfb812cd, it only half-worked and broke things
Kim Alvefur <zash@zash.se>
parents: 2182
diff changeset
209 host_session.log("debug", "DANE lookup completed, resuming connection");
7155ed1fb540 Backed out changeset f00cbfb812cd, it only half-worked and broke things
Kim Alvefur <zash@zash.se>
parents: 2182
diff changeset
210 host_session.conn:resume()
7155ed1fb540 Backed out changeset f00cbfb812cd, it only half-worked and broke things
Kim Alvefur <zash@zash.se>
parents: 2182
diff changeset
211 end
7155ed1fb540 Backed out changeset f00cbfb812cd, it only half-worked and broke things
Kim Alvefur <zash@zash.se>
parents: 2182
diff changeset
212
2197
90a444ccaa8e mod_s2s_auth_dane: Use util.async if available (current prosody trunk)
Kim Alvefur <zash@zash.se>
parents: 2185
diff changeset
213 if have_async then
90a444ccaa8e mod_s2s_auth_dane: Use util.async if available (current prosody trunk)
Kim Alvefur <zash@zash.se>
parents: 2185
diff changeset
214 function pause(host_session)
90a444ccaa8e mod_s2s_auth_dane: Use util.async if available (current prosody trunk)
Kim Alvefur <zash@zash.se>
parents: 2185
diff changeset
215 host_session.log("debug", "Pausing connection until DANE lookup is completed");
90a444ccaa8e mod_s2s_auth_dane: Use util.async if available (current prosody trunk)
Kim Alvefur <zash@zash.se>
parents: 2185
diff changeset
216 local wait, done = async.waiter();
90a444ccaa8e mod_s2s_auth_dane: Use util.async if available (current prosody trunk)
Kim Alvefur <zash@zash.se>
parents: 2185
diff changeset
217 host_session._done_waiting_for_dane = done;
90a444ccaa8e mod_s2s_auth_dane: Use util.async if available (current prosody trunk)
Kim Alvefur <zash@zash.se>
parents: 2185
diff changeset
218 wait();
90a444ccaa8e mod_s2s_auth_dane: Use util.async if available (current prosody trunk)
Kim Alvefur <zash@zash.se>
parents: 2185
diff changeset
219 end
90a444ccaa8e mod_s2s_auth_dane: Use util.async if available (current prosody trunk)
Kim Alvefur <zash@zash.se>
parents: 2185
diff changeset
220 local function _resume(_, host_session)
90a444ccaa8e mod_s2s_auth_dane: Use util.async if available (current prosody trunk)
Kim Alvefur <zash@zash.se>
parents: 2185
diff changeset
221 if host_session._done_waiting_for_dane then
90a444ccaa8e mod_s2s_auth_dane: Use util.async if available (current prosody trunk)
Kim Alvefur <zash@zash.se>
parents: 2185
diff changeset
222 host_session.log("debug", "DANE lookup completed, resuming connection");
90a444ccaa8e mod_s2s_auth_dane: Use util.async if available (current prosody trunk)
Kim Alvefur <zash@zash.se>
parents: 2185
diff changeset
223 host_session._done_waiting_for_dane();
90a444ccaa8e mod_s2s_auth_dane: Use util.async if available (current prosody trunk)
Kim Alvefur <zash@zash.se>
parents: 2185
diff changeset
224 host_session._done_waiting_for_dane = nil;
90a444ccaa8e mod_s2s_auth_dane: Use util.async if available (current prosody trunk)
Kim Alvefur <zash@zash.se>
parents: 2185
diff changeset
225 end
90a444ccaa8e mod_s2s_auth_dane: Use util.async if available (current prosody trunk)
Kim Alvefur <zash@zash.se>
parents: 2185
diff changeset
226 end
90a444ccaa8e mod_s2s_auth_dane: Use util.async if available (current prosody trunk)
Kim Alvefur <zash@zash.se>
parents: 2185
diff changeset
227 function resume(host_session)
90a444ccaa8e mod_s2s_auth_dane: Use util.async if available (current prosody trunk)
Kim Alvefur <zash@zash.se>
parents: 2185
diff changeset
228 -- Something about the way luaunbound calls callbacks is messed up
90a444ccaa8e mod_s2s_auth_dane: Use util.async if available (current prosody trunk)
Kim Alvefur <zash@zash.se>
parents: 2185
diff changeset
229 if host_session._done_waiting_for_dane then
90a444ccaa8e mod_s2s_auth_dane: Use util.async if available (current prosody trunk)
Kim Alvefur <zash@zash.se>
parents: 2185
diff changeset
230 module:add_timer(0, _resume, host_session);
90a444ccaa8e mod_s2s_auth_dane: Use util.async if available (current prosody trunk)
Kim Alvefur <zash@zash.se>
parents: 2185
diff changeset
231 end
90a444ccaa8e mod_s2s_auth_dane: Use util.async if available (current prosody trunk)
Kim Alvefur <zash@zash.se>
parents: 2185
diff changeset
232 end
90a444ccaa8e mod_s2s_auth_dane: Use util.async if available (current prosody trunk)
Kim Alvefur <zash@zash.se>
parents: 2185
diff changeset
233 end
90a444ccaa8e mod_s2s_auth_dane: Use util.async if available (current prosody trunk)
Kim Alvefur <zash@zash.se>
parents: 2185
diff changeset
234
4490
cf2bdb2aaa57 mod_s2s_auth_dane: Disable now redundant validation done in trunk
Kim Alvefur <zash@zash.se>
parents: 2869
diff changeset
235 local new_dane = module:get_option_boolean("use_dane", false);
cf2bdb2aaa57 mod_s2s_auth_dane: Disable now redundant validation done in trunk
Kim Alvefur <zash@zash.se>
parents: 2869
diff changeset
236
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
237 function module.add_host(module)
2184
7155ed1fb540 Backed out changeset f00cbfb812cd, it only half-worked and broke things
Kim Alvefur <zash@zash.se>
parents: 2182
diff changeset
238 local function on_new_s2s(event)
7155ed1fb540 Backed out changeset f00cbfb812cd, it only half-worked and broke things
Kim Alvefur <zash@zash.se>
parents: 2182
diff changeset
239 local host_session = event.origin;
7155ed1fb540 Backed out changeset f00cbfb812cd, it only half-worked and broke things
Kim Alvefur <zash@zash.se>
parents: 2182
diff changeset
240 if host_session.type == "s2sout" or host_session.type == "s2sin" then
7155ed1fb540 Backed out changeset f00cbfb812cd, it only half-worked and broke things
Kim Alvefur <zash@zash.se>
parents: 2182
diff changeset
241 return; -- Already authenticated
7155ed1fb540 Backed out changeset f00cbfb812cd, it only half-worked and broke things
Kim Alvefur <zash@zash.se>
parents: 2182
diff changeset
242 end
7155ed1fb540 Backed out changeset f00cbfb812cd, it only half-worked and broke things
Kim Alvefur <zash@zash.se>
parents: 2182
diff changeset
243 if host_session.dane ~= nil then
7155ed1fb540 Backed out changeset f00cbfb812cd, it only half-worked and broke things
Kim Alvefur <zash@zash.se>
parents: 2182
diff changeset
244 return; -- Already done DANE lookup
7155ed1fb540 Backed out changeset f00cbfb812cd, it only half-worked and broke things
Kim Alvefur <zash@zash.se>
parents: 2182
diff changeset
245 end
2197
90a444ccaa8e mod_s2s_auth_dane: Use util.async if available (current prosody trunk)
Kim Alvefur <zash@zash.se>
parents: 2185
diff changeset
246 dane_lookup(host_session, resume);
2869
77498ea07795 mod_s2s_auth_dane: Fix typo in comment [codespell]
Kim Alvefur <zash@zash.se>
parents: 2197
diff changeset
247 -- Let it run in parallel until we need to check the cert
2184
7155ed1fb540 Backed out changeset f00cbfb812cd, it only half-worked and broke things
Kim Alvefur <zash@zash.se>
parents: 2182
diff changeset
248 end
7155ed1fb540 Backed out changeset f00cbfb812cd, it only half-worked and broke things
Kim Alvefur <zash@zash.se>
parents: 2182
diff changeset
249
4490
cf2bdb2aaa57 mod_s2s_auth_dane: Disable now redundant validation done in trunk
Kim Alvefur <zash@zash.se>
parents: 2869
diff changeset
250 if not new_dane then
cf2bdb2aaa57 mod_s2s_auth_dane: Disable now redundant validation done in trunk
Kim Alvefur <zash@zash.se>
parents: 2869
diff changeset
251 -- New outgoing connections
cf2bdb2aaa57 mod_s2s_auth_dane: Disable now redundant validation done in trunk
Kim Alvefur <zash@zash.se>
parents: 2869
diff changeset
252 module:hook("stanza/http://etherx.jabber.org/streams:features", on_new_s2s, 501);
cf2bdb2aaa57 mod_s2s_auth_dane: Disable now redundant validation done in trunk
Kim Alvefur <zash@zash.se>
parents: 2869
diff changeset
253 module:hook("s2sout-authenticate-legacy", on_new_s2s, 200);
cf2bdb2aaa57 mod_s2s_auth_dane: Disable now redundant validation done in trunk
Kim Alvefur <zash@zash.se>
parents: 2869
diff changeset
254 end
2184
7155ed1fb540 Backed out changeset f00cbfb812cd, it only half-worked and broke things
Kim Alvefur <zash@zash.se>
parents: 2182
diff changeset
255
7155ed1fb540 Backed out changeset f00cbfb812cd, it only half-worked and broke things
Kim Alvefur <zash@zash.se>
parents: 2182
diff changeset
256 -- New incoming connections
7155ed1fb540 Backed out changeset f00cbfb812cd, it only half-worked and broke things
Kim Alvefur <zash@zash.se>
parents: 2182
diff changeset
257 module:hook("s2s-stream-features", on_new_s2s, 10);
7155ed1fb540 Backed out changeset f00cbfb812cd, it only half-worked and broke things
Kim Alvefur <zash@zash.se>
parents: 2182
diff changeset
258
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
259 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
260 local session = event.session;
2180
5e0102a07fdc mod_s2s_auth_dane: Make sure dane field has correct type
Kim Alvefur <zash@zash.se>
parents: 2035
diff changeset
261 if session.dane and type(session.dane) == "table" and next(session.dane) ~= nil and not session.secure then
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
262 -- 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
263 -- 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
264 -- 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
265 -- 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
266 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
267 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
268 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
269 ..((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
270 });
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
271 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
272 end
1392
d99c10fc4d19 mod_s2s_auth_dane: Clean up no longer needed DNS replies
Kim Alvefur <zash@zash.se>
parents: 1391
diff changeset
273 -- Cleanup
d99c10fc4d19 mod_s2s_auth_dane: Clean up no longer needed DNS replies
Kim Alvefur <zash@zash.se>
parents: 1391
diff changeset
274 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
275 end);
1258
fc82d8eded7d mod_s2s_auth_dane: Experimental DANE implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
276 end
fc82d8eded7d mod_s2s_auth_dane: Experimental DANE implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
277
1626
aed20f9e78c8 mod_s2s_auth_dane: Comments and cleanup
Kim Alvefur <zash@zash.se>
parents: 1507
diff changeset
278 -- Compare one TLSA record against a certificate
1970
5ea6f4e6fa8c mod_s2s_auth_dane: Log as much as possible through session logger instance
Kim Alvefur <zash@zash.se>
parents: 1963
diff changeset
279 local function one_dane_check(tlsa, cert, log)
1389
6bd9681d54b7 mod_s2s_auth_dane: Break out DANE check into a function
Kim Alvefur <zash@zash.se>
parents: 1383
diff changeset
280 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
281
6bd9681d54b7 mod_s2s_auth_dane: Break out DANE check into a function
Kim Alvefur <zash@zash.se>
parents: 1383
diff changeset
282 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
283 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
284 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
285 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
286 else
1970
5ea6f4e6fa8c mod_s2s_auth_dane: Log as much as possible through session logger instance
Kim Alvefur <zash@zash.se>
parents: 1963
diff changeset
287 log("warn", "DANE selector %s is unsupported", tlsa:getSelector() or select);
1389
6bd9681d54b7 mod_s2s_auth_dane: Break out DANE check into a function
Kim Alvefur <zash@zash.se>
parents: 1383
diff changeset
288 return;
6bd9681d54b7 mod_s2s_auth_dane: Break out DANE check into a function
Kim Alvefur <zash@zash.se>
parents: 1383
diff changeset
289 end
6bd9681d54b7 mod_s2s_auth_dane: Break out DANE check into a function
Kim Alvefur <zash@zash.se>
parents: 1383
diff changeset
290
6bd9681d54b7 mod_s2s_auth_dane: Break out DANE check into a function
Kim Alvefur <zash@zash.se>
parents: 1383
diff changeset
291 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
292 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
293 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
294 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
295 elseif match ~= 0 then
1970
5ea6f4e6fa8c mod_s2s_auth_dane: Log as much as possible through session logger instance
Kim Alvefur <zash@zash.se>
parents: 1963
diff changeset
296 log("warn", "DANE match rule %s is unsupported", tlsa:getMatchType() or match);
1389
6bd9681d54b7 mod_s2s_auth_dane: Break out DANE check into a function
Kim Alvefur <zash@zash.se>
parents: 1383
diff changeset
297 return;
6bd9681d54b7 mod_s2s_auth_dane: Break out DANE check into a function
Kim Alvefur <zash@zash.se>
parents: 1383
diff changeset
298 end
6bd9681d54b7 mod_s2s_auth_dane: Break out DANE check into a function
Kim Alvefur <zash@zash.se>
parents: 1383
diff changeset
299
1626
aed20f9e78c8 mod_s2s_auth_dane: Comments and cleanup
Kim Alvefur <zash@zash.se>
parents: 1507
diff changeset
300 if #certdata ~= #tlsa.data then
1970
5ea6f4e6fa8c mod_s2s_auth_dane: Log as much as possible through session logger instance
Kim Alvefur <zash@zash.se>
parents: 1963
diff changeset
301 log("warn", "Length mismatch: Cert: %d, TLSA: %d", #certdata, #tlsa.data);
1626
aed20f9e78c8 mod_s2s_auth_dane: Comments and cleanup
Kim Alvefur <zash@zash.se>
parents: 1507
diff changeset
302 end
1389
6bd9681d54b7 mod_s2s_auth_dane: Break out DANE check into a function
Kim Alvefur <zash@zash.se>
parents: 1383
diff changeset
303 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
304 end
6bd9681d54b7 mod_s2s_auth_dane: Break out DANE check into a function
Kim Alvefur <zash@zash.se>
parents: 1383
diff changeset
305
1258
fc82d8eded7d mod_s2s_auth_dane: Experimental DANE implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
306 module:hook("s2s-check-certificate", function(event)
1437
161bbe0b9dd3 mod_s2s_auth_dane: Tweak log messages
Kim Alvefur <zash@zash.se>
parents: 1436
diff changeset
307 local session, cert, host = event.session, event.cert, event.host;
1434
1caf971a2f0f mod_s2s_auth_dane: Return if no certificate found
Kim Alvefur <zash@zash.se>
parents: 1431
diff changeset
308 if not cert then return end
1431
33a796b2cb91 mod_s2s_auth_dane: Cache logger to save some table lookups and improve readability
Kim Alvefur <zash@zash.se>
parents: 1415
diff changeset
309 local log = session.log or module._log;
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
310 local dane = session.dane;
2197
90a444ccaa8e mod_s2s_auth_dane: Use util.async if available (current prosody trunk)
Kim Alvefur <zash@zash.se>
parents: 2185
diff changeset
311 if type(dane) ~= "table" then
90a444ccaa8e mod_s2s_auth_dane: Use util.async if available (current prosody trunk)
Kim Alvefur <zash@zash.se>
parents: 2185
diff changeset
312 if dane == nil and dane_lookup(session, resume) then
90a444ccaa8e mod_s2s_auth_dane: Use util.async if available (current prosody trunk)
Kim Alvefur <zash@zash.se>
parents: 2185
diff changeset
313 pause(session);
90a444ccaa8e mod_s2s_auth_dane: Use util.async if available (current prosody trunk)
Kim Alvefur <zash@zash.se>
parents: 2185
diff changeset
314 dane = session.dane;
90a444ccaa8e mod_s2s_auth_dane: Use util.async if available (current prosody trunk)
Kim Alvefur <zash@zash.se>
parents: 2185
diff changeset
315 end
90a444ccaa8e mod_s2s_auth_dane: Use util.async if available (current prosody trunk)
Kim Alvefur <zash@zash.se>
parents: 2185
diff changeset
316 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
317 if type(dane) == "table" then
1642
a4a6b4be973a mod_s2s_auth_dane: Update for recent changes in Zashs LuaSec branch
Kim Alvefur <zash@zash.se>
parents: 1626
diff changeset
318 local match_found, supported_found;
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
319 for i = 1, #dane do
1642
a4a6b4be973a mod_s2s_auth_dane: Update for recent changes in Zashs LuaSec branch
Kim Alvefur <zash@zash.se>
parents: 1626
diff changeset
320 local tlsa = dane[i].tlsa;
1970
5ea6f4e6fa8c mod_s2s_auth_dane: Log as much as possible through session logger instance
Kim Alvefur <zash@zash.se>
parents: 1963
diff changeset
321 log("debug", "TLSA #%d: %s", i, tostring(tlsa))
1642
a4a6b4be973a mod_s2s_auth_dane: Update for recent changes in Zashs LuaSec branch
Kim Alvefur <zash@zash.se>
parents: 1626
diff changeset
322 local use = tlsa.use;
1258
fc82d8eded7d mod_s2s_auth_dane: Experimental DANE implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
323
1348
6191613959dc mod_s2s_auth_dane: Make supported DANE usages configurable, default to DANE-EE
Kim Alvefur <zash@zash.se>
parents: 1347
diff changeset
324 if enabled_uses:contains(use) then
1944
1950fa6aa0c0 mod_s2s_auth_dane: Consider the current certificate chain status before checking PKIX-{EE,CA} TLSA records
Kim Alvefur <zash@zash.se>
parents: 1943
diff changeset
325 -- DANE-EE or PKIX-EE
1951
7974a24d29b6 mod_s2s_auth_dane: Consider TLSA records with PKIX uses as supported (if enabled) even if the chain is invalid (if no match is found the session is considered insecure)
Kim Alvefur <zash@zash.se>
parents: 1944
diff changeset
326 if use == 3 or use == 1 then
1389
6bd9681d54b7 mod_s2s_auth_dane: Break out DANE check into a function
Kim Alvefur <zash@zash.se>
parents: 1383
diff changeset
327 -- Should we check if the cert subject matches?
1970
5ea6f4e6fa8c mod_s2s_auth_dane: Log as much as possible through session logger instance
Kim Alvefur <zash@zash.se>
parents: 1963
diff changeset
328 local is_match = one_dane_check(tlsa, cert, log);
1389
6bd9681d54b7 mod_s2s_auth_dane: Break out DANE check into a function
Kim Alvefur <zash@zash.se>
parents: 1383
diff changeset
329 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
330 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
331 end
1951
7974a24d29b6 mod_s2s_auth_dane: Consider TLSA records with PKIX uses as supported (if enabled) even if the chain is invalid (if no match is found the session is considered insecure)
Kim Alvefur <zash@zash.se>
parents: 1944
diff changeset
332 if is_match and use == 1 and session.cert_chain_status ~= "valid" then
7974a24d29b6 mod_s2s_auth_dane: Consider TLSA records with PKIX uses as supported (if enabled) even if the chain is invalid (if no match is found the session is considered insecure)
Kim Alvefur <zash@zash.se>
parents: 1944
diff changeset
333 -- for usage 1, PKIX-EE, the chain has to be valid already
7974a24d29b6 mod_s2s_auth_dane: Consider TLSA records with PKIX uses as supported (if enabled) even if the chain is invalid (if no match is found the session is considered insecure)
Kim Alvefur <zash@zash.se>
parents: 1944
diff changeset
334 log("debug", "PKIX-EE TLSA matches untrusted certificate");
7974a24d29b6 mod_s2s_auth_dane: Consider TLSA records with PKIX uses as supported (if enabled) even if the chain is invalid (if no match is found the session is considered insecure)
Kim Alvefur <zash@zash.se>
parents: 1944
diff changeset
335 is_match = false;
7974a24d29b6 mod_s2s_auth_dane: Consider TLSA records with PKIX uses as supported (if enabled) even if the chain is invalid (if no match is found the session is considered insecure)
Kim Alvefur <zash@zash.se>
parents: 1944
diff changeset
336 end
1389
6bd9681d54b7 mod_s2s_auth_dane: Break out DANE check into a function
Kim Alvefur <zash@zash.se>
parents: 1383
diff changeset
337 if is_match then
1437
161bbe0b9dd3 mod_s2s_auth_dane: Tweak log messages
Kim Alvefur <zash@zash.se>
parents: 1436
diff changeset
338 log("info", "DANE validated ok for %s using %s", host, tlsa:getUsage());
1348
6191613959dc mod_s2s_auth_dane: Make supported DANE usages configurable, default to DANE-EE
Kim Alvefur <zash@zash.se>
parents: 1347
diff changeset
339 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
340 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
341 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
342 end
6191613959dc mod_s2s_auth_dane: Make supported DANE usages configurable, default to DANE-EE
Kim Alvefur <zash@zash.se>
parents: 1347
diff changeset
343 match_found = true;
1962
2f32196586bb mod_s2s_auth_dane: Keep DANE response around after the connection is established to aid in debugging
Kim Alvefur <zash@zash.se>
parents: 1961
diff changeset
344 dane.matching = tlsa;
1348
6191613959dc mod_s2s_auth_dane: Make supported DANE usages configurable, default to DANE-EE
Kim Alvefur <zash@zash.se>
parents: 1347
diff changeset
345 break;
1258
fc82d8eded7d mod_s2s_auth_dane: Experimental DANE implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
346 end
1944
1950fa6aa0c0 mod_s2s_auth_dane: Consider the current certificate chain status before checking PKIX-{EE,CA} TLSA records
Kim Alvefur <zash@zash.se>
parents: 1943
diff changeset
347 -- DANE-TA or PKIX-CA
1951
7974a24d29b6 mod_s2s_auth_dane: Consider TLSA records with PKIX uses as supported (if enabled) even if the chain is invalid (if no match is found the session is considered insecure)
Kim Alvefur <zash@zash.se>
parents: 1944
diff changeset
348 elseif use == 2 or use == 0 then
1396
cf4e39334ef7 mod_s2s_auth_dane: Add support for DANE-TA and PKIX-CA (requires LuaSec changes)
Kim Alvefur <zash@zash.se>
parents: 1395
diff changeset
349 supported_found = true;
1642
a4a6b4be973a mod_s2s_auth_dane: Update for recent changes in Zashs LuaSec branch
Kim Alvefur <zash@zash.se>
parents: 1626
diff changeset
350 local chain = session.conn:socket():getpeerchain();
1652
9a3d2f1479a4 mod_s2s_auth_dane: Cleanup [luacheck]
Kim Alvefur <zash@zash.se>
parents: 1642
diff changeset
351 for c = 1, #chain do
9a3d2f1479a4 mod_s2s_auth_dane: Cleanup [luacheck]
Kim Alvefur <zash@zash.se>
parents: 1642
diff changeset
352 local cacert = chain[c];
1970
5ea6f4e6fa8c mod_s2s_auth_dane: Log as much as possible through session logger instance
Kim Alvefur <zash@zash.se>
parents: 1963
diff changeset
353 local is_match = one_dane_check(tlsa, cacert, log);
1396
cf4e39334ef7 mod_s2s_auth_dane: Add support for DANE-TA and PKIX-CA (requires LuaSec changes)
Kim Alvefur <zash@zash.se>
parents: 1395
diff changeset
354 if is_match ~= nil then
cf4e39334ef7 mod_s2s_auth_dane: Add support for DANE-TA and PKIX-CA (requires LuaSec changes)
Kim Alvefur <zash@zash.se>
parents: 1395
diff changeset
355 supported_found = true;
cf4e39334ef7 mod_s2s_auth_dane: Add support for DANE-TA and PKIX-CA (requires LuaSec changes)
Kim Alvefur <zash@zash.se>
parents: 1395
diff changeset
356 end
1951
7974a24d29b6 mod_s2s_auth_dane: Consider TLSA records with PKIX uses as supported (if enabled) even if the chain is invalid (if no match is found the session is considered insecure)
Kim Alvefur <zash@zash.se>
parents: 1944
diff changeset
357 if is_match and not cacert:issued(cert, unpack(chain)) then
7974a24d29b6 mod_s2s_auth_dane: Consider TLSA records with PKIX uses as supported (if enabled) even if the chain is invalid (if no match is found the session is considered insecure)
Kim Alvefur <zash@zash.se>
parents: 1944
diff changeset
358 is_match = false;
7974a24d29b6 mod_s2s_auth_dane: Consider TLSA records with PKIX uses as supported (if enabled) even if the chain is invalid (if no match is found the session is considered insecure)
Kim Alvefur <zash@zash.se>
parents: 1944
diff changeset
359 end
7974a24d29b6 mod_s2s_auth_dane: Consider TLSA records with PKIX uses as supported (if enabled) even if the chain is invalid (if no match is found the session is considered insecure)
Kim Alvefur <zash@zash.se>
parents: 1944
diff changeset
360 if is_match and use == 0 and session.cert_chain_status ~= "valid" then
7974a24d29b6 mod_s2s_auth_dane: Consider TLSA records with PKIX uses as supported (if enabled) even if the chain is invalid (if no match is found the session is considered insecure)
Kim Alvefur <zash@zash.se>
parents: 1944
diff changeset
361 -- for usage 0, PKIX-CA, identity and chain has to be valid already
7974a24d29b6 mod_s2s_auth_dane: Consider TLSA records with PKIX uses as supported (if enabled) even if the chain is invalid (if no match is found the session is considered insecure)
Kim Alvefur <zash@zash.se>
parents: 1944
diff changeset
362 is_match = false;
7974a24d29b6 mod_s2s_auth_dane: Consider TLSA records with PKIX uses as supported (if enabled) even if the chain is invalid (if no match is found the session is considered insecure)
Kim Alvefur <zash@zash.se>
parents: 1944
diff changeset
363 end
7974a24d29b6 mod_s2s_auth_dane: Consider TLSA records with PKIX uses as supported (if enabled) even if the chain is invalid (if no match is found the session is considered insecure)
Kim Alvefur <zash@zash.se>
parents: 1944
diff changeset
364 if is_match then
1437
161bbe0b9dd3 mod_s2s_auth_dane: Tweak log messages
Kim Alvefur <zash@zash.se>
parents: 1436
diff changeset
365 log("info", "DANE validated ok for %s using %s", host, tlsa:getUsage());
1396
cf4e39334ef7 mod_s2s_auth_dane: Add support for DANE-TA and PKIX-CA (requires LuaSec changes)
Kim Alvefur <zash@zash.se>
parents: 1395
diff changeset
366 if use == 2 then -- DANE-TA
cf4e39334ef7 mod_s2s_auth_dane: Add support for DANE-TA and PKIX-CA (requires LuaSec changes)
Kim Alvefur <zash@zash.se>
parents: 1395
diff changeset
367 session.cert_identity_status = "valid";
1757
d011b87b7f58 mod_s2s_auth_dane: Validate names of DANE-TA certs
Kim Alvefur <zash@zash.se>
parents: 1701
diff changeset
368 if cert_verify_identity(host, "xmpp-server", cert) then
d011b87b7f58 mod_s2s_auth_dane: Validate names of DANE-TA certs
Kim Alvefur <zash@zash.se>
parents: 1701
diff changeset
369 session.cert_chain_status = "valid";
d011b87b7f58 mod_s2s_auth_dane: Validate names of DANE-TA certs
Kim Alvefur <zash@zash.se>
parents: 1701
diff changeset
370 -- else -- TODO Check against SRV target?
d011b87b7f58 mod_s2s_auth_dane: Validate names of DANE-TA certs
Kim Alvefur <zash@zash.se>
parents: 1701
diff changeset
371 end
1396
cf4e39334ef7 mod_s2s_auth_dane: Add support for DANE-TA and PKIX-CA (requires LuaSec changes)
Kim Alvefur <zash@zash.se>
parents: 1395
diff changeset
372 end
cf4e39334ef7 mod_s2s_auth_dane: Add support for DANE-TA and PKIX-CA (requires LuaSec changes)
Kim Alvefur <zash@zash.se>
parents: 1395
diff changeset
373 match_found = true;
1962
2f32196586bb mod_s2s_auth_dane: Keep DANE response around after the connection is established to aid in debugging
Kim Alvefur <zash@zash.se>
parents: 1961
diff changeset
374 dane.matching = tlsa;
1396
cf4e39334ef7 mod_s2s_auth_dane: Add support for DANE-TA and PKIX-CA (requires LuaSec changes)
Kim Alvefur <zash@zash.se>
parents: 1395
diff changeset
375 break;
cf4e39334ef7 mod_s2s_auth_dane: Add support for DANE-TA and PKIX-CA (requires LuaSec changes)
Kim Alvefur <zash@zash.se>
parents: 1395
diff changeset
376 end
cf4e39334ef7 mod_s2s_auth_dane: Add support for DANE-TA and PKIX-CA (requires LuaSec changes)
Kim Alvefur <zash@zash.se>
parents: 1395
diff changeset
377 end
cf4e39334ef7 mod_s2s_auth_dane: Add support for DANE-TA and PKIX-CA (requires LuaSec changes)
Kim Alvefur <zash@zash.se>
parents: 1395
diff changeset
378 if match_found then break end
1258
fc82d8eded7d mod_s2s_auth_dane: Experimental DANE implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
379 end
fc82d8eded7d mod_s2s_auth_dane: Experimental DANE implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
380 end
fc82d8eded7d mod_s2s_auth_dane: Experimental DANE implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
381 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
382 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
383 -- No TLSA matched or response was bogus
1436
3944e364ba88 mod_s2s_auth_dane: Add some more info to log messages
Kim Alvefur <zash@zash.se>
parents: 1435
diff changeset
384 local why = "No TLSA matched certificate";
3944e364ba88 mod_s2s_auth_dane: Add some more info to log messages
Kim Alvefur <zash@zash.se>
parents: 1435
diff changeset
385 if dane.bogus then
3944e364ba88 mod_s2s_auth_dane: Add some more info to log messages
Kim Alvefur <zash@zash.se>
parents: 1435
diff changeset
386 why = "Bogus: "..tostring(dane.bogus);
3944e364ba88 mod_s2s_auth_dane: Add some more info to log messages
Kim Alvefur <zash@zash.se>
parents: 1435
diff changeset
387 end
1507
6ea13869753f mod_s2s_auth_dane: Include hostname when logging a failure
Kim Alvefur <zash@zash.se>
parents: 1506
diff changeset
388 log("warn", "DANE validation failed for %s: %s", host, why);
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
389 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
390 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
391 end
1370
e3fe6c749bc3 mod_s2s_auth_dane: Merge functionality from mod_s2s_auth_dnssec_srv
Kim Alvefur <zash@zash.se>
parents: 1368
diff changeset
392 else
e3fe6c749bc3 mod_s2s_auth_dane: Merge functionality from mod_s2s_auth_dnssec_srv
Kim Alvefur <zash@zash.se>
parents: 1368
diff changeset
393 if session.cert_chain_status == "valid" and session.cert_identity_status ~= "valid"
1411
8626abe100e2 mod_s2s_auth_dane: Fix traceback if session.srv_hosts is nil
Kim Alvefur <zash@zash.se>
parents: 1410
diff changeset
394 and session.srv_hosts and session.srv_hosts.answer and session.srv_hosts.answer.secure then
1370
e3fe6c749bc3 mod_s2s_auth_dane: Merge functionality from mod_s2s_auth_dnssec_srv
Kim Alvefur <zash@zash.se>
parents: 1368
diff changeset
395 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
396 for i = srv_choice or 1, srv_choice or #srv_hosts do
1415
8791fa8a18c8 mod_s2s_auth_dane: Fix potential traceback in logging if SRV target fails nameprep
Kim Alvefur <zash@zash.se>
parents: 1414
diff changeset
397 srv_target = session.srv_hosts[i].target:gsub("%.?$","");
1431
33a796b2cb91 mod_s2s_auth_dane: Cache logger to save some table lookups and improve readability
Kim Alvefur <zash@zash.se>
parents: 1415
diff changeset
398 log("debug", "Comparing certificate with Secure SRV target %s", srv_target);
1506
a40f9b8661d8 mod_s2s_auth_dane: Fix stringprepping when doing "DANE Light"
Kim Alvefur <zash@zash.se>
parents: 1502
diff changeset
399 srv_target = nameprep(idna_to_unicode(srv_target));
1370
e3fe6c749bc3 mod_s2s_auth_dane: Merge functionality from mod_s2s_auth_dnssec_srv
Kim Alvefur <zash@zash.se>
parents: 1368
diff changeset
400 if srv_target and cert_verify_identity(srv_target, "xmpp-server", cert) then
1437
161bbe0b9dd3 mod_s2s_auth_dane: Tweak log messages
Kim Alvefur <zash@zash.se>
parents: 1436
diff changeset
401 log("info", "Certificate for %s matches Secure SRV target %s", host, srv_target);
1370
e3fe6c749bc3 mod_s2s_auth_dane: Merge functionality from mod_s2s_auth_dnssec_srv
Kim Alvefur <zash@zash.se>
parents: 1368
diff changeset
402 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
403 return;
e3fe6c749bc3 mod_s2s_auth_dane: Merge functionality from mod_s2s_auth_dnssec_srv
Kim Alvefur <zash@zash.se>
parents: 1368
diff changeset
404 end
e3fe6c749bc3 mod_s2s_auth_dane: Merge functionality from mod_s2s_auth_dnssec_srv
Kim Alvefur <zash@zash.se>
parents: 1368
diff changeset
405 end
e3fe6c749bc3 mod_s2s_auth_dane: Merge functionality from mod_s2s_auth_dnssec_srv
Kim Alvefur <zash@zash.se>
parents: 1368
diff changeset
406 end
1258
fc82d8eded7d mod_s2s_auth_dane: Experimental DANE implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
407 end
fc82d8eded7d mod_s2s_auth_dane: Experimental DANE implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
408 end);
fc82d8eded7d mod_s2s_auth_dane: Experimental DANE implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
409
1963
98d757dc0771 mod_s2s_auth_dane: Add a telnet console command that exposes DANE information
Kim Alvefur <zash@zash.se>
parents: 1962
diff changeset
410 -- Telnet command
98d757dc0771 mod_s2s_auth_dane: Add a telnet console command that exposes DANE information
Kim Alvefur <zash@zash.se>
parents: 1962
diff changeset
411 if module:get_option_set("modules_enabled", {}):contains("admin_telnet") then
98d757dc0771 mod_s2s_auth_dane: Add a telnet console command that exposes DANE information
Kim Alvefur <zash@zash.se>
parents: 1962
diff changeset
412 module:depends("admin_telnet"); -- Make sure the env is there
98d757dc0771 mod_s2s_auth_dane: Add a telnet console command that exposes DANE information
Kim Alvefur <zash@zash.se>
parents: 1962
diff changeset
413 local def_env = module:shared("admin_telnet/env");
98d757dc0771 mod_s2s_auth_dane: Add a telnet console command that exposes DANE information
Kim Alvefur <zash@zash.se>
parents: 1962
diff changeset
414
98d757dc0771 mod_s2s_auth_dane: Add a telnet console command that exposes DANE information
Kim Alvefur <zash@zash.se>
parents: 1962
diff changeset
415 local function annotate(session, line)
98d757dc0771 mod_s2s_auth_dane: Add a telnet console command that exposes DANE information
Kim Alvefur <zash@zash.se>
parents: 1962
diff changeset
416 line = line or {};
98d757dc0771 mod_s2s_auth_dane: Add a telnet console command that exposes DANE information
Kim Alvefur <zash@zash.se>
parents: 1962
diff changeset
417 table.insert(line, "--");
98d757dc0771 mod_s2s_auth_dane: Add a telnet console command that exposes DANE information
Kim Alvefur <zash@zash.se>
parents: 1962
diff changeset
418 if session.dane == nil then
98d757dc0771 mod_s2s_auth_dane: Add a telnet console command that exposes DANE information
Kim Alvefur <zash@zash.se>
parents: 1962
diff changeset
419 table.insert(line, "No DANE attempted, probably insecure SRV response");
98d757dc0771 mod_s2s_auth_dane: Add a telnet console command that exposes DANE information
Kim Alvefur <zash@zash.se>
parents: 1962
diff changeset
420 elseif session.dane == false then
98d757dc0771 mod_s2s_auth_dane: Add a telnet console command that exposes DANE information
Kim Alvefur <zash@zash.se>
parents: 1962
diff changeset
421 table.insert(line, "DANE failed or response was insecure");
98d757dc0771 mod_s2s_auth_dane: Add a telnet console command that exposes DANE information
Kim Alvefur <zash@zash.se>
parents: 1962
diff changeset
422 elseif type(session.dane) ~= "table" then
98d757dc0771 mod_s2s_auth_dane: Add a telnet console command that exposes DANE information
Kim Alvefur <zash@zash.se>
parents: 1962
diff changeset
423 table.insert(line, "Waiting for DANE records...");
98d757dc0771 mod_s2s_auth_dane: Add a telnet console command that exposes DANE information
Kim Alvefur <zash@zash.se>
parents: 1962
diff changeset
424 elseif session.dane.matching then
98d757dc0771 mod_s2s_auth_dane: Add a telnet console command that exposes DANE information
Kim Alvefur <zash@zash.se>
parents: 1962
diff changeset
425 table.insert(line, "Matching DANE record:\n| " .. tostring(session.dane.matching));
98d757dc0771 mod_s2s_auth_dane: Add a telnet console command that exposes DANE information
Kim Alvefur <zash@zash.se>
parents: 1962
diff changeset
426 else
98d757dc0771 mod_s2s_auth_dane: Add a telnet console command that exposes DANE information
Kim Alvefur <zash@zash.se>
parents: 1962
diff changeset
427 table.insert(line, "DANE records:\n| " .. tostring(session.dane));
98d757dc0771 mod_s2s_auth_dane: Add a telnet console command that exposes DANE information
Kim Alvefur <zash@zash.se>
parents: 1962
diff changeset
428 end
98d757dc0771 mod_s2s_auth_dane: Add a telnet console command that exposes DANE information
Kim Alvefur <zash@zash.se>
parents: 1962
diff changeset
429 return table.concat(line, " ");
98d757dc0771 mod_s2s_auth_dane: Add a telnet console command that exposes DANE information
Kim Alvefur <zash@zash.se>
parents: 1962
diff changeset
430 end
98d757dc0771 mod_s2s_auth_dane: Add a telnet console command that exposes DANE information
Kim Alvefur <zash@zash.se>
parents: 1962
diff changeset
431
98d757dc0771 mod_s2s_auth_dane: Add a telnet console command that exposes DANE information
Kim Alvefur <zash@zash.se>
parents: 1962
diff changeset
432 function def_env.s2s:show_dane(...)
98d757dc0771 mod_s2s_auth_dane: Add a telnet console command that exposes DANE information
Kim Alvefur <zash@zash.se>
parents: 1962
diff changeset
433 return self:show(..., annotate);
98d757dc0771 mod_s2s_auth_dane: Add a telnet console command that exposes DANE information
Kim Alvefur <zash@zash.se>
parents: 1962
diff changeset
434 end
98d757dc0771 mod_s2s_auth_dane: Add a telnet console command that exposes DANE information
Kim Alvefur <zash@zash.se>
parents: 1962
diff changeset
435 end
98d757dc0771 mod_s2s_auth_dane: Add a telnet console command that exposes DANE information
Kim Alvefur <zash@zash.se>
parents: 1962
diff changeset
436