prosody-modules: mod_s2s_auth_dane/mod_s2s_auth

annotate mod_s2s_auth_dane/mod_s2s_auth_dane.lua @ 5160:8474a3b80200

mod_firewall: Fix 'is_admin' internal dependency rule #1797 (thanks diane) Looks like the boolean logic was inverted here. Instead, for now, simply check if is_admin is there. It is deprecated in trunk and was briefly removed before being brought back with a 'deprecated' warning as part of the new roles and permissions work. Making this dependency conditioned on the existence of the underlying function should make it work until it actually goes away for real.

author	Kim Alvefur <zash@zash.se>
date	Fri, 27 Jan 2023 23:06:25 +0100
parents	35381608d323
children

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

Mercurial > prosody-modules

annotate mod_s2s_auth_dane/mod_s2s_auth_dane.lua @ 5160:8474a3b80200