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annotate mod_http_oauth2/mod_http_oauth2.lua @ 4075:4841cf3fded5

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mod_external_service: Include for users of older versions of Prosody
author Kim Alvefur <zash@zash.se>
date Sat, 22 Aug 2020 18:28:19 +0200
parents 469408682152
children 3eb595cf847f
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cfeb93b80621 mod_http_oauth2: OAuth2 API (work in progress for developers only)
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1 local http = require "util.http";
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2 local jid = require "util.jid";
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3 local json = require "util.json";
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4 local usermanager = require "core.usermanager";
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5 local errors = require "util.error";
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6
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80dffbbd056b mod_rest, mod_http_oauth2: Switch from mod_authtokens to mod_tokenauth per Prosody bf81523e2ff4
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7 local tokens = module:depends("tokenauth");
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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(token_jid, scope, ttl)
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20 local token = tokens.create_jid_token(token_jid, token_jid, scope, ttl);
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21 return {
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22 token_type = "bearer";
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23 access_token = token;
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24 expires_in = ttl;
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25 -- TODO: include refresh_token when implemented
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26 };
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27 end
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28
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29 local grant_type_handlers = {};
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30
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31 function grant_type_handlers.password(params)
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32 local request_jid = assert(params.username, oauth_error("invalid_request", "missing 'username' (JID)"));
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33 local request_password = assert(params.password, oauth_error("invalid_request", "missing 'password'"));
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34 local request_username, request_host, request_resource = jid.prepped_split(request_jid);
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35 if params.scope then
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36 return oauth_error("invalid_scope", "unknown scope requested");
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37 end
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38 if not (request_username and request_host) or request_host ~= module.host then
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39 return oauth_error("invalid_request", "invalid JID");
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40 end
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41 if usermanager.test_password(request_username, request_host, request_password) then
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42 local granted_jid = jid.join(request_username, request_host, request_resource);
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43 return json.encode(new_access_token(granted_jid, request_host, nil, nil));
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44 end
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45 return oauth_error("invalid_grant", "incorrect credentials");
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46 end
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47
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48 if module:get_host_type() == "component" then
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49 local component_secret = assert(module:get_option_string("component_secret"), "'component_secret' is a required setting when loaded on a Component");
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50
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51 function grant_type_handlers.password(params)
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52 local request_jid = assert(params.username, oauth_error("invalid_request", "missing 'username' (JID)"));
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53 local request_password = assert(params.password, oauth_error("invalid_request", "missing 'password'"));
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54 local request_username, request_host, request_resource = jid.prepped_split(request_jid);
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55 if params.scope then
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56 return oauth_error("invalid_scope", "unknown scope requested");
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57 end
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58 if not request_host or request_host ~= module.host then
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59 return oauth_error("invalid_request", "invalid JID");
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60 end
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61 if request_password == component_secret then
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62 local granted_jid = jid.join(request_username, request_host, request_resource);
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63 return json.encode(new_access_token(granted_jid, request_host, nil, nil));
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64 end
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65 return oauth_error("invalid_grant", "incorrect credentials");
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66 end
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67 end
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68
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69 function handle_token_grant(event)
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70 event.response.headers.content_type = "application/json";
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71 local params = http.formdecode(event.request.body);
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72 if not params then
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73 return oauth_error("invalid_request");
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74 end
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75 local grant_type = params.grant_type
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76 local grant_handler = grant_type_handlers[grant_type];
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77 if not grant_handler then
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78 return oauth_error("unsupported_grant_type");
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79 end
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80 return grant_handler(params);
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81 end
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82
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83 module:depends("http");
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84 module:provides("http", {
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85 route = {
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86 ["POST /token"] = handle_token_grant;
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87 };
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88 });
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89
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90 local http_server = require "net.http.server";
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91
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92 module:hook_object_event(http_server, "http-error", function (event)
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93 local oauth2_response = event.error and event.error.context and event.error.context.oauth2_response;
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94 if not oauth2_response then
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95 return;
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96 end
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97 event.response.headers.content_type = "application/json";
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98 event.response.status_code = event.error.code or 400;
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99 return json.encode(oauth2_response);
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100 end, 5);