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annotate mod_auth_oauthbearer/mod_auth_oauthbearer.lua @ 4565:3b2ae854842c

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mod_muc_bot: Save occupant to room This has some side-effects: Firstly, the bot shows up in occupant list, which is nice. Secondly, the bot starts receiving messages from the room which might be wanted, but it would be better to join the room for real in this case.
author Kim Alvefur <zash@zash.se>
date Sat, 10 Apr 2021 19:23:25 +0200
parents d2bf9c8be3a3
children
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1 local host = module.host;
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2 local log = module._log;
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3 local new_sasl = require "util.sasl".new;
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4 local base64 = require "util.encodings".base64.encode;
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5
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6 local provider = {};
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7
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8 local oauth_client_id = module:get_option_string("oauth_client_id", "");
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9 local oauth_client_secret = module:get_option_string("oauth_client_secret", "");
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10 local oauth_url = module:get_option_string("oauth_url", "");
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11
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12 if oauth_client_id == "" then error("oauth_client_id required") end
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13 if oauth_client_secret == "" then error("oauth_client_secret required") end
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14 if oauth_url == "" then error("oauth_url required") end
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15
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16 -- globals required by socket.http
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17 if rawget(_G, "PROXY") == nil then
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18 rawset(_G, "PROXY", false)
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19 end
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20 if rawget(_G, "base_parsed") == nil then
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21 rawset(_G, "base_parsed", false)
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22 end
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23
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24 local function interp(s, tab)
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25 -- String interpolation, so that we can make the oauth_url configurable
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26 -- e.g. oauth_url = "https://api.github.com/applications/{{oauth_client_id}}/tokens/{{password}}";
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27 --
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28 -- See: http://lua-users.org/wiki/StringInterpolation
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29 return (s:gsub('(%b{})', function(w) return tab[w:sub(3, -3)] or w end))
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30 end
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31
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32 function provider.test_password(username, password, realm)
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33 log("debug", "Testing signed OAuth2 for user %s at realm %s", username, realm);
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34 local https = require "ssl.https";
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35 local url = interp(oauth_url, {oauth_client_id = oauth_client_id, password = password});
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36
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37 module:log("debug", "The URL is: "..url);
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38 local _, code, headers, status = https.request{
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39 url = url,
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40 headers = {
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41 Authorization = "Basic "..base64(oauth_client_id..":"..oauth_client_secret);
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42 }
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43 };
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44 if type(code) == "number" and code >= 200 and code <= 299 then
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45 module:log("debug", "OAuth provider confirmed valid password");
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46 return true;
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47 else
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48 module:log("debug", "OAuth provider returned status code: "..code);
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49 end
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50 module:log("warn", "Auth failed. Invalid username/password or misconfiguration.");
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51 return nil;
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52 end
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53
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54 function provider.users()
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55 return function()
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56 return nil;
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57 end
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58 end
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59
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60 function provider.set_password(username, password)
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61 return nil, "Changing passwords not supported";
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62 end
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63
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64 function provider.user_exists(username)
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65 return true;
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66 end
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67
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68 function provider.create_user(username, password)
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69 return nil, "User creation not supported";
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70 end
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71
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72 function provider.delete_user(username)
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73 return nil , "User deletion not supported";
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74 end
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75
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76 function provider.get_sasl_handler()
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77 local supported_mechanisms = {};
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78 supported_mechanisms["OAUTHBEARER"] = true;
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79 return new_sasl(host, {
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80 oauthbearer = function(sasl, username, password, realm)
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81 return provider.test_password(username, password, realm), true;
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82 end,
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83 mechanisms = supported_mechanisms
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84 });
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85 end
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86
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87 module:provides("auth", provider);