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mod_s2s_auth_fingerprint/mod_s2s_auth_fingerprint.lua @ 1380:703041357f89
mod_s2s_auth_fingerprint: Allways pin fingerprints
author | Kim Alvefur <zash@zash.se> |
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date | Sat, 05 Apr 2014 13:40:13 +0200 |
parent | 1325:b21236b6b8d8 |
child | 1381:11b6170a50f7 |
rev | line source |
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mod_s2s_auth_fingerprint: Allways pin fingerprints
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1 -- Copyright (C) 2013-2014 Kim Alvefur |
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2 -- This file is MIT/X11 licensed. |
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3 |
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4 module:set_global(); |
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5 |
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6 local digest_algo = module:get_option_string(module:get_name().."_digest", "sha1"); |
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7 |
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8 local fingerprints = {}; |
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9 |
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10 local function hashprep(h) |
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11 return tostring(h):lower():gsub(":",""); |
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12 end |
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14 for host, set in pairs(module:get_option("s2s_trusted_fingerprints", {})) do |
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15 local host_set = {} |
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16 if type(set) == "table" then -- list of fingerprints |
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17 for i=1,#set do |
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18 host_set[hashprep(set[i])] = true; |
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19 end |
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20 else -- assume single fingerprint |
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21 host_set[hashprep(set)] = true; |
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22 end |
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23 fingerprints[host] = host_set; |
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24 end |
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26 module:hook("s2s-check-certificate", function(event) |
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27 local session, host, cert = event.session, event.host, event.cert; |
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28 |
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29 local host_fingerprints = fingerprints[host]; |
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30 if host_fingerprints then |
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31 local digest = cert and cert:digest(digest_algo); |
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32 if host_fingerprints[digest] then |
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33 session.cert_chain_status = "valid"; |
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34 session.cert_identity_status = "valid"; |
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35 return true; |
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36 else |
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37 session.cert_chain_status = "invalid"; |
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38 session.cert_identity_status = "invalid"; |
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39 end |
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40 end |
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41 end); |