prosody-modules
cfeb93b80621
mod_http_oauth2/mod_http_oauth2.lua

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mod_http_oauth2/mod_http_oauth2.lua @ 3903:cfeb93b80621

mod_http_oauth2: OAuth2 API (work in progress for developers only)
author Matthew Wild <mwild1@gmail.com>
date Sun, 23 Feb 2020 21:36:53 +0000
child 3908:8ac5d9933106
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1 module:set_global();
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2
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3 local http = require "util.http";
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4 local jid = require "util.jid";
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5 local json = require "util.json";
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6 local usermanager = require "core.usermanager";
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7 local errors = require "util.error";
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8
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9 local function oauth_error(err_name, err_desc)
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10 return errors.new({
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11 type = "modify";
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12 condition = "bad-request";
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13 code = err_name == "invalid_client" and 401 or 400;
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14 text = err_desc and (err_name..": "..err_desc) or err_name;
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15 context = { oauth2_response = { error = err_name, error_description = err_desc } };
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16 });
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17 end
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18
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19 local function new_access_token(username, host, scope, ttl)
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20 return {
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21 token_type = "bearer";
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22 access_token = "test-token";
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23 expires_in = ttl;
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24 -- TODO: include refresh_token when implemented
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25 };
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26 end
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27
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28 local grant_type_handlers = {};
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29
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30 function grant_type_handlers.password(params)
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31 local request_jid = assert(params.username, oauth_error("invalid_request", "missing 'username' (JID)"));
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32 local request_password = assert(params.password, oauth_error("invalid_request", "missing 'password'"));
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33 local request_username, request_host = jid.prepped_split(request_jid);
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34 if params.scope then
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35 return oauth_error("invalid_scope", "unknown scope requested");
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36 end
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37 if not (request_username and request_host) or not (hosts[request_host]) then
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38 return oauth_error("invalid_request", "invalid JID");
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39 end
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40 if usermanager.test_password(request_username, request_host, request_password) then
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41 return json.encode(new_access_token(request_username, request_host, nil, nil));
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42 end
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43 return oauth_error("invalid_grant", "incorrect credentials");
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44 end
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45
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46 function handle_token_grant(event)
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47 local params = http.formdecode(event.request.body);
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48 if not params then
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49 return oauth_error("invalid_request");
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50 end
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51 local grant_type = params.grant_type
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52 local grant_handler = grant_type_handlers[grant_type];
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53 if not grant_handler then
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54 return oauth_error("unsupported_grant_type");
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55 end
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56 return grant_handler(params);
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57 end
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58
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59 module:depends("http");
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60 module:provides("http", {
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61 route = {
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62 ["POST /token"] = handle_token_grant;
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63 };
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64 });
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65
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66 local http_server = require "net.http.server";
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67
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68 module:hook_object_event(http_server, "http-error", function (event)
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69 local oauth2_response = event.error and event.error.context and event.error.context.oauth2_response;
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70 if not oauth2_response then
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71 return;
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72 end
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73 event.response.headers.content_type = "application/json";
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74 event.response.status_code = event.error.code or 400;
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75 return json.encode(oauth2_response);
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76 end, 5);