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annotate mod_auth_oauthbearer/mod_auth_oauthbearer.lua @ 4942:e7b9bc629ecc

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mod_rest: Add special handling to catch MAM results from remote hosts Makes MAM queries to remote hosts works. As the comment says, MAM results from users' local archives or local MUCs are returned via origin.send() which is provided in the event and thus already worked. Results from remote hosts go via normal stanza routing and events, which need this extra handling to catch. This pattern of iq-set, message+, iq-result is generally limited to MAM. Closest similar thing might be MUC join, but to really handle that you would need the webhook callback mechanism.
author Kim Alvefur <zash@zash.se>
date Mon, 16 May 2022 19:47:09 +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);