Mercurial > prosody-modules

annotate mod_sasl_oauthbearer/mod_sasl_oauthbearer.lua @ 5616:59d5fc50f602

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mod_http_oauth2: Implement refresh token rotation Makes refresh tokens one-time-use, handing out a new refresh token with each access token. Thus if a refresh token is stolen and used by an attacker, the next time the legitimate client tries to use the previous refresh token, it will not work and the attack will be noticed. If the attacker does not use the refresh token, it becomes invalid after the legitimate client uses it. This behavior is recommended by draft-ietf-oauth-security-topics
author Kim Alvefur <zash@zash.se>
date Sun, 23 Jul 2023 02:56:08 +0200
parents 73ada978dabc
children
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1 local s_match = string.match;
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2 local registerMechanism = require "util.sasl".registerMechanism;
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3 local saslprep = require "util.encodings".stringprep.saslprep;
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4 local nodeprep = require "util.encodings".stringprep.nodeprep;
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5 local log = require "util.logger".init("sasl");
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6 local _ENV = nil;
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9 local function oauthbearer(self, message)
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10 if not message then
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11 return "failure", "malformed-request";
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12 end
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14 local authorization, password = s_match(message, "^n,a=([^,]*),\1auth=Bearer ([^\1]+)");
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15 if not authorization then
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16 return "failure", "malformed-request";
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17 end
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19 local authentication = s_match(authorization, "(.-)@.*");
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20
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21 -- SASLprep password and authentication
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22 authentication = saslprep(authentication);
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23 password = saslprep(password);
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25 if (not password) or (password == "") or (not authentication) or (authentication == "") then
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26 log("debug", "Username or password violates SASLprep.");
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27 return "failure", "malformed-request", "Invalid username or password.";
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28 end
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30 local _nodeprep = self.profile.nodeprep;
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31 if _nodeprep ~= false then
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32 authentication = (_nodeprep or nodeprep)(authentication);
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33 if not authentication or authentication == "" then
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34 return "failure", "malformed-request", "Invalid username or password."
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35 end
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36 end
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38 local correct, state = false, false;
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39 correct, state = self.profile.oauthbearer(self, authentication, password, self.realm);
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41 self.username = authentication
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42 if state == false then
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43 return "failure", "account-disabled";
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44 elseif state == nil or not correct then
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45 return "failure", "not-authorized", "Unable to authorize you with the authentication credentials you've sent.";
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46 end
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47 return "success";
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48 end
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49
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50 registerMechanism("OAUTHBEARER", {"oauthbearer"}, oauthbearer);