prosody
c673ff1075bd
util/sasl/oauthbearer.lua

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util/sasl/oauthbearer.lua @ 13461:c673ff1075bd

mod_posix: Move everything to util.startup This allows greater control over the order of events. Notably, the internal ordering between daemonization, initialization of libunbound and setup of signal handling is sensitive. libunbound starts a separate thread for processing DNS requests. If this thread is started before signal handling has been set up, it will not inherit the signal handlers and instead behave as it would have before signal handlers were set up, i.e. cause the whole process to immediately exit. libunbound is usually initialized on the first DNS request, usually triggered by an outgoing s2s connection attempt. If daemonization happens before signals have been set up, signals may not be processed at all.
author Kim Alvefur <zash@zash.se>
date Sat, 23 Mar 2024 20:48:19 +0100
parent 13112:b6aaab0846fe
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rev   line source
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1 local json = require "prosody.util.json";
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2 local _ENV = nil;
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3
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4
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5 local function oauthbearer(self, message)
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6 if not message then
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7 return "failure", "malformed-request";
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8 end
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9
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10 if message == "\001" then
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11 return "failure", "not-authorized";
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12 end
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13
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14 -- gs2-header kvsep *kvpair kvsep
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15 local gs2_header, kvpairs = message:match("^(n,[^,]*,)\001(.+)\001$");
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16 if not gs2_header then
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17 return "failure", "malformed-request";
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18 end
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19 local gs2_authzid = gs2_header:match("^[^,]*,a=([^,]*),$");
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20
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21 -- key "=" value kvsep
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22 local auth_header;
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23 for k, v in kvpairs:gmatch("([a-zA-Z]+)=([\033-\126 \009\r\n]*)\001") do
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24 if k == "auth" then
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25 auth_header = v;
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26 break;
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27 end
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28 end
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29
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30 if not auth_header then
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31 return "failure", "malformed-request";
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32 end
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33
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34 local token = auth_header:match("^Bearer (.+)$");
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35
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36 local username, state, token_info = self.profile.oauthbearer(self, token, self.realm, gs2_authzid);
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37
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38 if state == false then
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39 return "failure", "account-disabled";
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40 elseif state == nil or not username then
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41 -- For token-level errors, RFC 7628 demands use of a JSON-encoded
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42 -- challenge response upon failure. We relay additional info from
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43 -- the auth backend if available.
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44 return "challenge", json.encode({
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45 status = token_info and token_info.status or "invalid_token";
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46 scope = token_info and token_info.scope or nil;
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47 ["openid-configuration"] = token_info and token_info.oidc_discovery_url or nil;
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48 });
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49 end
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50 self.username = username;
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51 self.token_info = token_info;
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52
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53 return "success";
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54 end
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55
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56 local function init(registerMechanism)
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57 registerMechanism("OAUTHBEARER", {"oauthbearer"}, oauthbearer);
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58 end
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59
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60 return {
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61 init = init;
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62 }