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annotate mod_s2s_keysize_policy/mod_s2s_keysize_policy.lua @ 4211:0f26ae2f2a74

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mod_invites_page: Change client selection button text from 'Install' to 'Select' by default This also allows specific clients entries to override the text via the 'select_text' field. Rationale: 1) users may already have the software installed, we still want them to select it anyway for the tailored setup experience. 2) some clients (e.g. web clients) are not really "installed" so the text was misleading
author Matthew Wild <mwild1@gmail.com>
date Fri, 16 Oct 2020 11:06:25 +0100
parents 27ffa6521d4e
children
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5294c8c1861c mod_s2s_keysize_policy: Don't trust keys weaker than 2048 bit RSA after 31 December 2013
Kim Alvefur <zash@zash.se>
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1 -- mod_s2s_keysize_policy.lua
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fc42f8484451 mod_s2s_keysize_policy: Add note about required LuaSec patch
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2 -- Requires LuaSec with this patch: https://github.com/brunoos/luasec/pull/12
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4 module:set_global();
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5
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6 local datetime_parse = require"util.datetime".parse;
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7 local pat = "^([JFMAONSD][ceupao][glptbvyncr]) ?(%d%d?) (%d%d):(%d%d):(%d%d) (%d%d%d%d) GMT$";
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8 local months = {Jan=1,Feb=2,Mar=3,Apr=4,May=5,Jun=6,Jul=7,Aug=8,Sep=9,Oct=10,Nov=11,Dec=12};
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9 local function parse_x509_datetime(s)
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10 local month, day, hour, min, sec, year = s:match(pat); month = months[month];
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11 return datetime_parse(("%04d-%02d-%02dT%02d:%02d:%02dZ"):format(year, month, day, hour, min, sec));
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12 end
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13
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14 local weak_key_cutoff = datetime_parse("2014-01-01T00:00:00Z");
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15
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16 -- From RFC 4492
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17 local weak_key_size = {
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18 RSA = 2048,
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19 DSA = 2048,
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20 DH = 2048,
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21 EC = 233,
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22 }
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23
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24 module:hook("s2s-check-certificate", function(event)
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25 local host, session, cert = event.host, event.session, event.cert;
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26 if cert and cert.pubkey then
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27 local _, key_type, key_size = cert:pubkey();
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28 if key_size < ( weak_key_size[key_type] or 0 ) then
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b21236b6b8d8 Backed out changeset 853a382c9bd6
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parents: 1324
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29 local issued = parse_x509_datetime(cert:notbefore());
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30 if issued > weak_key_cutoff then
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31 session.log("warn", "%s has a %s-bit %s key issued after 31 December 2013, invalidating trust!", host, key_size, key_type);
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32 session.cert_chain_status = "invalid";
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33 session.cert_identity_status = "invalid";
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34 else
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35 session.log("warn", "%s has a %s-bit %s key", host, key_size, key_type);
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36 end
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37 else
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38 session.log("info", "%s has a %s-bit %s key", host, key_size, key_type);
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39 end
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40 end
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41 end);