Mercurial > prosody-modules

annotate mod_auth_oauthbearer/mod_auth_oauthbearer.lua @ 5173:460f78654864

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mod_muc_rtbl: also filter messages This was a bit tricky because we don't want to run the JIDs through SHA256 on each message. Took a while to come up with this simple plan of just caching the SHA256 of the JIDs on the occupants. This will leave some dirt in the occupants after unloading the module, but that should be ok; once they cycle the room, the hashes will be gone. This is direly needed, otherwise, there is a tight race between the moderation activities and the actors joining the room.
author Jonas Schäfer <jonas@wielicki.name>
date Tue, 21 Feb 2023 21:37:27 +0100
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);