annotate mod_auth_token/mod_auth_token.lua @ 3503:882180b459a0

mod_pubsub_post: Restructure authentication and authorization (BC) This deprecates the default "superuser" actor model and makes the default equivalent to the previous "request.id". A single actor and secret per node is supported because HTTP and WebHooks don't normally include any authorization identity. Allowing authentication bypass when no secret is given should be relatively safe when the actor is unprivileged, as will be unless explicitly configured otherwise.
author Kim Alvefur <zash@zash.se>
date Sat, 30 Mar 2019 21:16:13 +0100
parents d0ca211e1b0e
children 0fb12a4b6106
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1 -- Copyright (C) 2018 Minddistrict
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2 --
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3 -- This file is MIT/X11 licensed.
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4 --
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5
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6 local host = module.host;
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7 local log = module._log;
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8 local new_sasl = require "util.sasl".new;
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9 local verify_token = module:require "token_auth_utils".verify_token;
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10
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11 local provider = {};
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12
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13
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14 function provider.test_password(username, password, realm)
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15 log("debug", "Testing signed OTP for user %s at host %s", username, host);
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16 return verify_token(
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17 username,
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18 password,
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19 realm,
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20 module:get_option_string("otp_seed"),
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21 module:get_option_string("token_secret"),
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22 log
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23 );
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24 end
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25
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26 function provider.users()
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27 return function()
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28 return nil;
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29 end
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30 end
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31
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32 function provider.set_password(username, password)
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33 return nil, "Changing passwords not supported";
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34 end
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35
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36 function provider.user_exists(username)
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37 return true;
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38 end
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39
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40 function provider.create_user(username, password)
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41 return nil, "User creation not supported";
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42 end
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43
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44 function provider.delete_user(username)
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45 return nil , "User deletion not supported";
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46 end
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47
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48 function provider.get_sasl_handler()
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49 local supported_mechanisms = {};
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50 supported_mechanisms["X-TOKEN"] = true;
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51 return new_sasl(host, {
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52 token = function(sasl, username, password, realm)
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53 return provider.test_password(username, password, realm), true;
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54 end,
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55 mechanisms = supported_mechanisms
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56 });
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57 end
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58
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59 module:provides("auth", provider);