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annotate mod_http_oauth2/mod_http_oauth2.lua @ 4256:c4b9d4ba839b

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mod_http_oauth2: Authorization code flow
author Kim Alvefur <zash@zash.se>
date Sat, 21 Nov 2020 01:08:30 +0100
parents a0ab7be0538d
children 145e8e8a247a
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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 local url = require "socket.url";
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7 local uuid = require "util.uuid";
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8 local encodings = require "util.encodings";
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9 local base64 = encodings.base64;
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10
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Matthew Wild <mwild1@gmail.com>
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11 local tokens = module:depends("tokenauth");
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12
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13 local clients = module:open_store("oauth2_clients");
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14 local codes = module:open_store("oauth2_codes", "map");
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15
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16 local function oauth_error(err_name, err_desc)
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17 return errors.new({
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18 type = "modify";
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19 condition = "bad-request";
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20 code = err_name == "invalid_client" and 401 or 400;
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21 text = err_desc and (err_name..": "..err_desc) or err_name;
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22 context = { oauth2_response = { error = err_name, error_description = err_desc } };
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23 });
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24 end
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25
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26 local function new_access_token(token_jid, scope, ttl)
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27 local token = tokens.create_jid_token(token_jid, token_jid, scope, ttl);
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28 return {
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29 token_type = "bearer";
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30 access_token = token;
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31 expires_in = ttl;
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32 -- TODO: include refresh_token when implemented
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33 };
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34 end
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35
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36 local grant_type_handlers = {};
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37 local response_type_handlers = {};
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38
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39 function grant_type_handlers.password(params)
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40 local request_jid = assert(params.username, oauth_error("invalid_request", "missing 'username' (JID)"));
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41 local request_password = assert(params.password, oauth_error("invalid_request", "missing 'password'"));
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42 local request_username, request_host, request_resource = jid.prepped_split(request_jid);
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43 if params.scope and params.scope ~= "" then
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44 return oauth_error("invalid_scope", "unknown scope requested");
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45 end
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46 if not (request_username and request_host) or request_host ~= module.host then
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47 return oauth_error("invalid_request", "invalid JID");
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48 end
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49 if usermanager.test_password(request_username, request_host, request_password) then
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50 local granted_jid = jid.join(request_username, request_host, request_resource);
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51 return json.encode(new_access_token(granted_jid, request_host, nil, nil));
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52 end
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53 return oauth_error("invalid_grant", "incorrect credentials");
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54 end
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55
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56 function response_type_handlers.code(params, granted_jid)
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57 if not params.client_id then return oauth_error("invalid_request", "missing 'client_id'"); end
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58 if not params.redirect_uri then return oauth_error("invalid_request", "missing 'redirect_uri'"); end
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59 if params.scope and params.scope ~= "" then
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60 return oauth_error("invalid_scope", "unknown scope requested");
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61 end
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62
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63 local client, err = clients:get(params.client_id);
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64 module:log("debug", "clients:get(%q) --> %q, %q", params.client_id, client, err);
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65 if err then error(err); end
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66 if not client then
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67 return oauth_error("invalid_client", "incorrect credentials");
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68 end
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69
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70 local code = uuid.generate();
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71 assert(codes:set(params.client_id, code, { issued = os.time(), granted_jid = granted_jid, }));
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72
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73 local redirect = url.parse(params.redirect_uri);
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74 local query = http.formdecode(redirect.query or "");
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75 if type(query) ~= "table" then query = {}; end
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76 table.insert(query, { name = "code", value = code })
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77 if params.state then
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78 table.insert(query, { name = "state", value = params.state });
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79 end
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80 redirect.query = http.formencode(query);
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81
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82 return {
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83 status_code = 302;
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84 headers = {
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85 location = url.build(redirect);
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86 };
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87 }
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88 end
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89
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90 function grant_type_handlers.authorization_code(params)
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91 if not params.client_id then return oauth_error("invalid_request", "missing 'client_id'"); end
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92 if not params.client_secret then return oauth_error("invalid_request", "missing 'client_secret'"); end
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93 if not params.code then return oauth_error("invalid_request", "missing 'code'"); end
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94 --if not params.redirect_uri then return oauth_error("invalid_request", "missing 'redirect_uri'"); end
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95 if params.scope and params.scope ~= "" then
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96 return oauth_error("invalid_scope", "unknown scope requested");
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97 end
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98
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99 local client, err = clients:get(params.client_id);
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100 if err then error(err); end
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101 if not client or client.secret ~= params.client_secret then
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102 return oauth_error("invalid_client", "incorrect credentials");
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103 end
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104 local code, err = codes:get(params.client_id, params.code);
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105 if err then error(err); end
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106 if not code or type(code) ~= "table" or os.difftime(os.time(), code.issued) > 900 then
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107 return oauth_error("invalid_client", "incorrect credentials");
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108 end
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109 assert(codes:set(params.client_id, params.code, nil));
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110
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111 if client.redirect_uri and client.redirect_uri ~= params.redirect_uri then
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112 return oauth_error("invalid_client", "incorrect 'redirect_uri'");
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113 end
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114
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115 return json.encode(new_access_token(code.granted_jid, nil, nil));
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116 end
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117
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118 local function check_credentials(request)
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119 local auth_type, auth_data = string.match(request.headers.authorization, "^(%S+)%s(.+)$");
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120
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121 if auth_type == "Basic" then
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122 local creds = base64.decode(auth_data);
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123 if not creds then return false; end
c4b9d4ba839b mod_http_oauth2: Authorization code flow
Kim Alvefur <zash@zash.se>
parents: 4237
diff changeset
124 local username, password = string.match(creds, "^([^:]+):(.*)$");
c4b9d4ba839b mod_http_oauth2: Authorization code flow
Kim Alvefur <zash@zash.se>
parents: 4237
diff changeset
125 if not username then return false; end
c4b9d4ba839b mod_http_oauth2: Authorization code flow
Kim Alvefur <zash@zash.se>
parents: 4237
diff changeset
126 username, password = encodings.stringprep.nodeprep(username), encodings.stringprep.saslprep(password);
c4b9d4ba839b mod_http_oauth2: Authorization code flow
Kim Alvefur <zash@zash.se>
parents: 4237
diff changeset
127 if not username then return false; end
c4b9d4ba839b mod_http_oauth2: Authorization code flow
Kim Alvefur <zash@zash.se>
parents: 4237
diff changeset
128 if not usermanager.test_password(username, module.host, password) then
c4b9d4ba839b mod_http_oauth2: Authorization code flow
Kim Alvefur <zash@zash.se>
parents: 4237
diff changeset
129 return false;
c4b9d4ba839b mod_http_oauth2: Authorization code flow
Kim Alvefur <zash@zash.se>
parents: 4237
diff changeset
130 end
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Kim Alvefur <zash@zash.se>
parents: 4237
diff changeset
131 return username;
c4b9d4ba839b mod_http_oauth2: Authorization code flow
Kim Alvefur <zash@zash.se>
parents: 4237
diff changeset
132 end
c4b9d4ba839b mod_http_oauth2: Authorization code flow
Kim Alvefur <zash@zash.se>
parents: 4237
diff changeset
133 return nil;
c4b9d4ba839b mod_http_oauth2: Authorization code flow
Kim Alvefur <zash@zash.se>
parents: 4237
diff changeset
134 end
c4b9d4ba839b mod_http_oauth2: Authorization code flow
Kim Alvefur <zash@zash.se>
parents: 4237
diff changeset
135
3920
cf92e3b30c18 mod_http_oauth2: Use component_secret setting as password on Components
Kim Alvefur <zash@zash.se>
parents: 3919
diff changeset
136 if module:get_host_type() == "component" then
cf92e3b30c18 mod_http_oauth2: Use component_secret setting as password on Components
Kim Alvefur <zash@zash.se>
parents: 3919
diff changeset
137 local component_secret = assert(module:get_option_string("component_secret"), "'component_secret' is a required setting when loaded on a Component");
cf92e3b30c18 mod_http_oauth2: Use component_secret setting as password on Components
Kim Alvefur <zash@zash.se>
parents: 3919
diff changeset
138
cf92e3b30c18 mod_http_oauth2: Use component_secret setting as password on Components
Kim Alvefur <zash@zash.se>
parents: 3919
diff changeset
139 function grant_type_handlers.password(params)
cf92e3b30c18 mod_http_oauth2: Use component_secret setting as password on Components
Kim Alvefur <zash@zash.se>
parents: 3919
diff changeset
140 local request_jid = assert(params.username, oauth_error("invalid_request", "missing 'username' (JID)"));
cf92e3b30c18 mod_http_oauth2: Use component_secret setting as password on Components
Kim Alvefur <zash@zash.se>
parents: 3919
diff changeset
141 local request_password = assert(params.password, oauth_error("invalid_request", "missing 'password'"));
cf92e3b30c18 mod_http_oauth2: Use component_secret setting as password on Components
Kim Alvefur <zash@zash.se>
parents: 3919
diff changeset
142 local request_username, request_host, request_resource = jid.prepped_split(request_jid);
cf92e3b30c18 mod_http_oauth2: Use component_secret setting as password on Components
Kim Alvefur <zash@zash.se>
parents: 3919
diff changeset
143 if params.scope then
cf92e3b30c18 mod_http_oauth2: Use component_secret setting as password on Components
Kim Alvefur <zash@zash.se>
parents: 3919
diff changeset
144 return oauth_error("invalid_scope", "unknown scope requested");
cf92e3b30c18 mod_http_oauth2: Use component_secret setting as password on Components
Kim Alvefur <zash@zash.se>
parents: 3919
diff changeset
145 end
cf92e3b30c18 mod_http_oauth2: Use component_secret setting as password on Components
Kim Alvefur <zash@zash.se>
parents: 3919
diff changeset
146 if not request_host or request_host ~= module.host then
cf92e3b30c18 mod_http_oauth2: Use component_secret setting as password on Components
Kim Alvefur <zash@zash.se>
parents: 3919
diff changeset
147 return oauth_error("invalid_request", "invalid JID");
cf92e3b30c18 mod_http_oauth2: Use component_secret setting as password on Components
Kim Alvefur <zash@zash.se>
parents: 3919
diff changeset
148 end
cf92e3b30c18 mod_http_oauth2: Use component_secret setting as password on Components
Kim Alvefur <zash@zash.se>
parents: 3919
diff changeset
149 if request_password == component_secret then
cf92e3b30c18 mod_http_oauth2: Use component_secret setting as password on Components
Kim Alvefur <zash@zash.se>
parents: 3919
diff changeset
150 local granted_jid = jid.join(request_username, request_host, request_resource);
cf92e3b30c18 mod_http_oauth2: Use component_secret setting as password on Components
Kim Alvefur <zash@zash.se>
parents: 3919
diff changeset
151 return json.encode(new_access_token(granted_jid, request_host, nil, nil));
cf92e3b30c18 mod_http_oauth2: Use component_secret setting as password on Components
Kim Alvefur <zash@zash.se>
parents: 3919
diff changeset
152 end
cf92e3b30c18 mod_http_oauth2: Use component_secret setting as password on Components
Kim Alvefur <zash@zash.se>
parents: 3919
diff changeset
153 return oauth_error("invalid_grant", "incorrect credentials");
cf92e3b30c18 mod_http_oauth2: Use component_secret setting as password on Components
Kim Alvefur <zash@zash.se>
parents: 3919
diff changeset
154 end
4256
c4b9d4ba839b mod_http_oauth2: Authorization code flow
Kim Alvefur <zash@zash.se>
parents: 4237
diff changeset
155
c4b9d4ba839b mod_http_oauth2: Authorization code flow
Kim Alvefur <zash@zash.se>
parents: 4237
diff changeset
156 -- TODO How would this make sense with components?
c4b9d4ba839b mod_http_oauth2: Authorization code flow
Kim Alvefur <zash@zash.se>
parents: 4237
diff changeset
157 -- Have an admin authenticate maybe?
c4b9d4ba839b mod_http_oauth2: Authorization code flow
Kim Alvefur <zash@zash.se>
parents: 4237
diff changeset
158 response_type_handlers.code = nil;
c4b9d4ba839b mod_http_oauth2: Authorization code flow
Kim Alvefur <zash@zash.se>
parents: 4237
diff changeset
159 grant_type_handlers.authorization_code = nil;
c4b9d4ba839b mod_http_oauth2: Authorization code flow
Kim Alvefur <zash@zash.se>
parents: 4237
diff changeset
160 check_credentials = function () return false end
3920
cf92e3b30c18 mod_http_oauth2: Use component_secret setting as password on Components
Kim Alvefur <zash@zash.se>
parents: 3919
diff changeset
161 end
cf92e3b30c18 mod_http_oauth2: Use component_secret setting as password on Components
Kim Alvefur <zash@zash.se>
parents: 3919
diff changeset
162
3903
cfeb93b80621 mod_http_oauth2: OAuth2 API (work in progress for developers only)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
163 function handle_token_grant(event)
3934
469408682152 mod_http_oauth2: Set content type on successful repsponses (fixes #1501)
Kim Alvefur <zash@zash.se>
parents: 3920
diff changeset
164 event.response.headers.content_type = "application/json";
3903
cfeb93b80621 mod_http_oauth2: OAuth2 API (work in progress for developers only)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
165 local params = http.formdecode(event.request.body);
cfeb93b80621 mod_http_oauth2: OAuth2 API (work in progress for developers only)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
166 if not params then
cfeb93b80621 mod_http_oauth2: OAuth2 API (work in progress for developers only)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
167 return oauth_error("invalid_request");
cfeb93b80621 mod_http_oauth2: OAuth2 API (work in progress for developers only)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
168 end
cfeb93b80621 mod_http_oauth2: OAuth2 API (work in progress for developers only)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
169 local grant_type = params.grant_type
cfeb93b80621 mod_http_oauth2: OAuth2 API (work in progress for developers only)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
170 local grant_handler = grant_type_handlers[grant_type];
cfeb93b80621 mod_http_oauth2: OAuth2 API (work in progress for developers only)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
171 if not grant_handler then
cfeb93b80621 mod_http_oauth2: OAuth2 API (work in progress for developers only)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
172 return oauth_error("unsupported_grant_type");
cfeb93b80621 mod_http_oauth2: OAuth2 API (work in progress for developers only)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
173 end
cfeb93b80621 mod_http_oauth2: OAuth2 API (work in progress for developers only)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
174 return grant_handler(params);
cfeb93b80621 mod_http_oauth2: OAuth2 API (work in progress for developers only)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
175 end
cfeb93b80621 mod_http_oauth2: OAuth2 API (work in progress for developers only)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
176
4256
c4b9d4ba839b mod_http_oauth2: Authorization code flow
Kim Alvefur <zash@zash.se>
parents: 4237
diff changeset
177 local function handle_authorization_request(event)
c4b9d4ba839b mod_http_oauth2: Authorization code flow
Kim Alvefur <zash@zash.se>
parents: 4237
diff changeset
178 if not event.request.headers.authorization then
c4b9d4ba839b mod_http_oauth2: Authorization code flow
Kim Alvefur <zash@zash.se>
parents: 4237
diff changeset
179 event.response.headers.www_authenticate = string.format("Basic realm=%q", module.host.."/"..module.name);
c4b9d4ba839b mod_http_oauth2: Authorization code flow
Kim Alvefur <zash@zash.se>
parents: 4237
diff changeset
180 return 401;
c4b9d4ba839b mod_http_oauth2: Authorization code flow
Kim Alvefur <zash@zash.se>
parents: 4237
diff changeset
181 end
c4b9d4ba839b mod_http_oauth2: Authorization code flow
Kim Alvefur <zash@zash.se>
parents: 4237
diff changeset
182 local user = check_credentials(event.request);
c4b9d4ba839b mod_http_oauth2: Authorization code flow
Kim Alvefur <zash@zash.se>
parents: 4237
diff changeset
183 if not user then
c4b9d4ba839b mod_http_oauth2: Authorization code flow
Kim Alvefur <zash@zash.se>
parents: 4237
diff changeset
184 return 401;
c4b9d4ba839b mod_http_oauth2: Authorization code flow
Kim Alvefur <zash@zash.se>
parents: 4237
diff changeset
185 end
c4b9d4ba839b mod_http_oauth2: Authorization code flow
Kim Alvefur <zash@zash.se>
parents: 4237
diff changeset
186 if not event.request.url.query then
c4b9d4ba839b mod_http_oauth2: Authorization code flow
Kim Alvefur <zash@zash.se>
parents: 4237
diff changeset
187 event.response.headers.content_type = "application/json";
c4b9d4ba839b mod_http_oauth2: Authorization code flow
Kim Alvefur <zash@zash.se>
parents: 4237
diff changeset
188 return oauth_error("invalid_request");
c4b9d4ba839b mod_http_oauth2: Authorization code flow
Kim Alvefur <zash@zash.se>
parents: 4237
diff changeset
189 end
c4b9d4ba839b mod_http_oauth2: Authorization code flow
Kim Alvefur <zash@zash.se>
parents: 4237
diff changeset
190 local params = http.formdecode(event.request.url.query);
c4b9d4ba839b mod_http_oauth2: Authorization code flow
Kim Alvefur <zash@zash.se>
parents: 4237
diff changeset
191 if not params then
c4b9d4ba839b mod_http_oauth2: Authorization code flow
Kim Alvefur <zash@zash.se>
parents: 4237
diff changeset
192 return oauth_error("invalid_request");
c4b9d4ba839b mod_http_oauth2: Authorization code flow
Kim Alvefur <zash@zash.se>
parents: 4237
diff changeset
193 end
c4b9d4ba839b mod_http_oauth2: Authorization code flow
Kim Alvefur <zash@zash.se>
parents: 4237
diff changeset
194 local response_type = params.response_type;
c4b9d4ba839b mod_http_oauth2: Authorization code flow
Kim Alvefur <zash@zash.se>
parents: 4237
diff changeset
195 local response_handler = response_type_handlers[response_type];
c4b9d4ba839b mod_http_oauth2: Authorization code flow
Kim Alvefur <zash@zash.se>
parents: 4237
diff changeset
196 if not response_handler then
c4b9d4ba839b mod_http_oauth2: Authorization code flow
Kim Alvefur <zash@zash.se>
parents: 4237
diff changeset
197 event.response.headers.content_type = "application/json";
c4b9d4ba839b mod_http_oauth2: Authorization code flow
Kim Alvefur <zash@zash.se>
parents: 4237
diff changeset
198 return oauth_error("unsupported_response_type");
c4b9d4ba839b mod_http_oauth2: Authorization code flow
Kim Alvefur <zash@zash.se>
parents: 4237
diff changeset
199 end
c4b9d4ba839b mod_http_oauth2: Authorization code flow
Kim Alvefur <zash@zash.se>
parents: 4237
diff changeset
200 return response_handler(params, jid.join(user, module.host));
c4b9d4ba839b mod_http_oauth2: Authorization code flow
Kim Alvefur <zash@zash.se>
parents: 4237
diff changeset
201 end
c4b9d4ba839b mod_http_oauth2: Authorization code flow
Kim Alvefur <zash@zash.se>
parents: 4237
diff changeset
202
3903
cfeb93b80621 mod_http_oauth2: OAuth2 API (work in progress for developers only)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
203 module:depends("http");
cfeb93b80621 mod_http_oauth2: OAuth2 API (work in progress for developers only)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
204 module:provides("http", {
cfeb93b80621 mod_http_oauth2: OAuth2 API (work in progress for developers only)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
205 route = {
cfeb93b80621 mod_http_oauth2: OAuth2 API (work in progress for developers only)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
206 ["POST /token"] = handle_token_grant;
4256
c4b9d4ba839b mod_http_oauth2: Authorization code flow
Kim Alvefur <zash@zash.se>
parents: 4237
diff changeset
207 ["GET /authorize"] = handle_authorization_request;
3903
cfeb93b80621 mod_http_oauth2: OAuth2 API (work in progress for developers only)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
208 };
cfeb93b80621 mod_http_oauth2: OAuth2 API (work in progress for developers only)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
209 });
cfeb93b80621 mod_http_oauth2: OAuth2 API (work in progress for developers only)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
210
cfeb93b80621 mod_http_oauth2: OAuth2 API (work in progress for developers only)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
211 local http_server = require "net.http.server";
cfeb93b80621 mod_http_oauth2: OAuth2 API (work in progress for developers only)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
212
cfeb93b80621 mod_http_oauth2: OAuth2 API (work in progress for developers only)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
213 module:hook_object_event(http_server, "http-error", function (event)
cfeb93b80621 mod_http_oauth2: OAuth2 API (work in progress for developers only)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
214 local oauth2_response = event.error and event.error.context and event.error.context.oauth2_response;
cfeb93b80621 mod_http_oauth2: OAuth2 API (work in progress for developers only)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
215 if not oauth2_response then
cfeb93b80621 mod_http_oauth2: OAuth2 API (work in progress for developers only)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
216 return;
cfeb93b80621 mod_http_oauth2: OAuth2 API (work in progress for developers only)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
217 end
cfeb93b80621 mod_http_oauth2: OAuth2 API (work in progress for developers only)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
218 event.response.headers.content_type = "application/json";
cfeb93b80621 mod_http_oauth2: OAuth2 API (work in progress for developers only)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
219 event.response.status_code = event.error.code or 400;
cfeb93b80621 mod_http_oauth2: OAuth2 API (work in progress for developers only)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
220 return json.encode(oauth2_response);
cfeb93b80621 mod_http_oauth2: OAuth2 API (work in progress for developers only)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
221 end, 5);