Rev 639 | Rev 699 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed
Rev | Author | Line No. | Line |
---|---|---|---|
566 | daniel-mar | 1 | <?php |
2 | |||
3 | /* |
||
4 | * OIDplus 2.0 |
||
5 | * Copyright 2019 - 2021 Daniel Marschall, ViaThinkSoft |
||
6 | * |
||
7 | * Licensed under the Apache License, Version 2.0 (the "License"); |
||
8 | * you may not use this file except in compliance with the License. |
||
9 | * You may obtain a copy of the License at |
||
10 | * |
||
11 | * http://www.apache.org/licenses/LICENSE-2.0 |
||
12 | * |
||
13 | * Unless required by applicable law or agreed to in writing, software |
||
14 | * distributed under the License is distributed on an "AS IS" BASIS, |
||
15 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
||
16 | * See the License for the specific language governing permissions and |
||
17 | * limitations under the License. |
||
18 | */ |
||
19 | |||
20 | if (!defined('INSIDE_OIDPLUS')) die(); |
||
21 | |||
22 | class OIDplusAuthContentStoreJWT extends OIDplusAuthContentStoreDummy { |
||
23 | |||
585 | daniel-mar | 24 | const COOKIE_NAME = 'OIDPLUS_AUTH_JWT'; |
25 | |||
26 | const JWT_GENERATOR_AJAX = 0; // "Automated AJAX" plugin |
||
27 | const JWT_GENERATOR_LOGIN = 1; // "Remember me" login method |
||
28 | const JWT_GENERATOR_MANUAL = 2; // "Manually crafted" JWT tokens |
||
29 | |||
30 | private static function jwtGetBlacklistConfigKey($gen, $sub) { |
||
31 | // Note: Needs to be <= 50 characters! |
||
32 | return 'jwt_blacklist_gen('.$gen.')_sub('.trim(base64_encode(md5($sub,true)),'=').')'; |
||
33 | } |
||
34 | |||
35 | public static function jwtBlacklist($gen, $sub) { |
||
36 | $cfg = self::jwtGetBlacklistConfigKey($gen, $sub); |
||
37 | $bl_time = time()-1; |
||
38 | |||
39 | $gen_desc = 'Unknown'; |
||
40 | if ($gen === self::JWT_GENERATOR_AJAX) $gen_desc = 'Automated AJAX calls'; |
||
41 | if ($gen === self::JWT_GENERATOR_LOGIN) $gen_desc = 'Login ("Remember me")'; |
||
42 | if ($gen === self::JWT_GENERATOR_MANUAL) $gen_desc = 'Manually created'; |
||
43 | |||
44 | OIDplus::config()->prepareConfigKey($cfg, 'Revoke timestamp of all JWT tokens for $sub with generator $gen ($gen_desc)', $bl_time, OIDplusConfig::PROTECTION_HIDDEN, function($value) {}); |
||
45 | OIDplus::config()->setValue($cfg, $bl_time); |
||
46 | } |
||
47 | |||
48 | public static function jwtGetBlacklistTime($gen, $sub) { |
||
49 | $cfg = self::jwtGetBlacklistConfigKey($gen, $sub); |
||
50 | return OIDplus::config()->getValue($cfg,0); |
||
51 | } |
||
52 | |||
53 | private static function jwtSecurityCheck($contentProvider) { |
||
54 | // Check if the token is intended for us |
||
55 | if ($contentProvider->getValue('aud','') !== "http://oidplus.com") { |
||
56 | throw new OIDplusException(_L('Token has wrong audience')); |
||
57 | } |
||
58 | $gen = $contentProvider->getValue('oidplus_generator', -1); |
||
59 | |||
60 | $has_admin = $contentProvider->isAdminLoggedIn(); |
||
61 | $has_ra = $contentProvider->raNumLoggedIn() > 0; |
||
62 | |||
63 | // Check if the token generator is allowed |
||
64 | if ($gen === self::JWT_GENERATOR_AJAX) { |
||
65 | if (($has_admin) && !OIDplus::baseConfig()->getValue('JWT_ALLOW_AJAX_ADMIN', true)) { |
||
635 | daniel-mar | 66 | // Generator: plugins/viathinksoft/adminPages/910_automated_ajax_calls/OIDplusPageAdminAutomatedAJAXCalls.class.php |
585 | daniel-mar | 67 | throw new OIDplusException(_L('The administrator has disabled this feature. (Base configuration setting %1).','JWT_ALLOW_AJAX_ADMIN')); |
68 | } |
||
69 | if (($has_ra) && !OIDplus::baseConfig()->getValue('JWT_ALLOW_AJAX_USER', true)) { |
||
635 | daniel-mar | 70 | // Generator: plugins/viathinksoft/raPages/910_automated_ajax_calls/OIDplusPageRaAutomatedAJAXCalls.class.php |
585 | daniel-mar | 71 | throw new OIDplusException(_L('The administrator has disabled this feature. (Base configuration setting %1).','JWT_ALLOW_AJAX_USER')); |
72 | } |
||
73 | } |
||
74 | else if ($gen === self::JWT_GENERATOR_LOGIN) { |
||
75 | // Used for feature "Remember me" (use JWT token in a cookie as alternative to PHP session): |
||
76 | // - No PHP session will be used |
||
77 | // - Session will not be bound to IP address (therefore, you can switch between mobile/WiFi for example) |
||
78 | // - No server-side session needed |
||
79 | if (($has_admin) && !OIDplus::baseConfig()->getValue('JWT_ALLOW_LOGIN_ADMIN', true)) { |
||
80 | throw new OIDplusException(_L('The administrator has disabled this feature. (Base configuration setting %1).','JWT_ALLOW_LOGIN_ADMIN')); |
||
81 | } |
||
82 | if (($has_ra) && !OIDplus::baseConfig()->getValue('JWT_ALLOW_LOGIN_USER', true)) { |
||
83 | throw new OIDplusException(_L('The administrator has disabled this feature. (Base configuration setting %1).','JWT_ALLOW_LOGIN_USER')); |
||
84 | } |
||
85 | } |
||
86 | else if ($gen === self::JWT_GENERATOR_MANUAL) { |
||
87 | // Generator 2 are "hand-crafted" tokens |
||
88 | if (!OIDplus::baseConfig()->getValue('JWT_ALLOW_MANUAL', false)) { |
||
89 | throw new OIDplusException(_L('The administrator has disabled this feature. (Base configuration setting %1).','JWT_ALLOW_MANUAL')); |
||
90 | } |
||
91 | } else { |
||
92 | throw new OIDplusException(_L('Token generator %1 not recognized',$gen)); |
||
93 | } |
||
94 | |||
95 | // Make sure that the IAT (issued at time) isn't in a blacklisted timeframe |
||
96 | // When an user believes that a token was compromised, then they can blacklist the tokens identified by their "iat" ("Issued at") property |
||
97 | // When a user logs out of a "remember me" session, the JWT token will be blacklisted as well |
||
98 | // Small side effect: All "remember me" sessions of that user will be revoked then |
||
99 | $sublist = $contentProvider->loggedInRaList(); |
||
100 | foreach ($sublist as &$sub) { |
||
101 | $sub = $sub->raEmail(); |
||
102 | } |
||
103 | if ($has_admin) $sublist[] = 'admin'; |
||
104 | foreach ($sublist as $sub) { |
||
105 | $bl_time = self::jwtGetBlacklistTime($gen, $sub); |
||
106 | $iat = $contentProvider->getValue('iat',0); |
||
107 | if ($iat <= $bl_time) { |
||
108 | throw new OIDplusException(_L('The JWT token was blacklisted on %1. Please generate a new one',date('d F Y, H:i:s',$bl_time))); |
||
109 | } |
||
110 | } |
||
111 | |||
112 | // Optional feature: Limit the JWT to a specific IP address |
||
113 | // Currently not used in OIDplus |
||
114 | $ip = $contentProvider->getValue('ip',''); |
||
115 | if ($ip !== '') { |
||
116 | if (isset($_SERVER['REMOTE_ADDR']) && ($ip !== $_SERVER['REMOTE_ADDR'])) { |
||
117 | throw new OIDplusException(_L('Your IP address is not allowed to use this token')); |
||
118 | } |
||
119 | } |
||
120 | |||
121 | // Checks which are dependent on the generator |
||
122 | if ($gen === self::JWT_GENERATOR_LOGIN) { |
||
123 | if (!isset($_COOKIE[self::COOKIE_NAME])) { |
||
124 | throw new OIDplusException(_L('This kind of JWT token can only be used with the %1 request type','COOKIE')); |
||
125 | } |
||
126 | } |
||
127 | if ($gen === self::JWT_GENERATOR_AJAX) { |
||
128 | if (!isset($_GET[self::COOKIE_NAME]) && !isset($_POST[self::COOKIE_NAME])) { |
||
129 | throw new OIDplusException(_L('This kind of JWT token can only be used with the %1 request type','GET/POST')); |
||
130 | } |
||
131 | if (isset($_SERVER['SCRIPT_FILENAME']) && (strtolower(basename($_SERVER['SCRIPT_FILENAME'])) !== 'ajax.php')) { |
||
132 | throw new OIDplusException(_L('This kind of JWT token can only be used in ajax.php')); |
||
133 | } |
||
134 | } |
||
135 | } |
||
136 | |||
137 | // Override abstract functions |
||
138 | |||
139 | public function activate() { |
||
620 | daniel-mar | 140 | // Send cookie at the end of the HTTP request, in case there are multiple activate() calls |
639 | daniel-mar | 141 | OIDplus::register_shutdown_function(array($this,'activateNow')); |
620 | daniel-mar | 142 | } |
143 | |||
144 | public function activateNow() { |
||
585 | daniel-mar | 145 | $token = $this->getJWTToken(); |
146 | $exp = $this->getValue('exp',0); |
||
147 | OIDplus::cookieUtils()->setcookie(self::COOKIE_NAME, $token, $exp, false); |
||
148 | } |
||
149 | |||
150 | public function destroySession() { |
||
151 | OIDplus::cookieUtils()->unsetcookie(self::COOKIE_NAME); |
||
152 | } |
||
153 | |||
154 | public function raLogout($email) { |
||
155 | $gen = $this->getValue('oidplus_generator', -1); |
||
156 | if ($gen >= 0) self::jwtBlacklist($gen, $email); |
||
157 | parent::raLogout($email); |
||
158 | } |
||
159 | |||
160 | public function raLogoutEx($email, &$loginfo) { |
||
161 | $this->raLogout($email); |
||
162 | $loginfo = 'from JWT session'; |
||
163 | } |
||
164 | |||
165 | public function adminLogout() { |
||
166 | $gen = $this->getValue('oidplus_generator', -1); |
||
167 | if ($gen >= 0) self::jwtBlacklist($gen, 'admin'); |
||
168 | parent::adminLogout(); |
||
169 | } |
||
170 | |||
171 | public function adminLogoutEx(&$loginfo) { |
||
172 | $this->adminLogout(); |
||
173 | $loginfo = 'from JWT session'; |
||
174 | } |
||
175 | |||
620 | daniel-mar | 176 | private static $contentProvider = null; |
585 | daniel-mar | 177 | public static function getActiveProvider() { |
620 | daniel-mar | 178 | if (!self::$contentProvider) { |
585 | daniel-mar | 179 | $jwt = ''; |
180 | if (isset($_COOKIE[self::COOKIE_NAME])) $jwt = $_COOKIE[self::COOKIE_NAME]; |
||
181 | if (isset($_POST[self::COOKIE_NAME])) $jwt = $_POST[self::COOKIE_NAME]; |
||
182 | if (isset($_GET[self::COOKIE_NAME])) $jwt = $_GET[self::COOKIE_NAME]; |
||
183 | |||
184 | if (!empty($jwt)) { |
||
185 | $tmp = new OIDplusAuthContentStoreJWT(); |
||
186 | |||
187 | try { |
||
188 | // Decode the JWT. In this step, the signature as well as EXP/NBF times will be checked |
||
189 | $tmp->loadJWT($jwt); |
||
190 | |||
191 | // Do various checks if the token is allowed and not blacklisted |
||
192 | self::jwtSecurityCheck($tmp); |
||
193 | } catch (Exception $e) { |
||
194 | if (isset($_GET[self::COOKIE_NAME]) || isset($_POST[self::COOKIE_NAME])) { |
||
195 | // Most likely an AJAX request. We can throw an Exception |
||
196 | throw new OIDplusException(_L('The JWT token was rejected: %1',$e->getMessage())); |
||
197 | } else { |
||
198 | // Most likely an expired Cookie/Login session. We must not throw an Exception, otherwise we will break jsTree |
||
199 | OIDplus::cookieUtils()->unsetcookie(self::COOKIE_NAME); |
||
200 | return null; |
||
201 | } |
||
202 | } |
||
203 | |||
620 | daniel-mar | 204 | self::$contentProvider = $tmp; |
585 | daniel-mar | 205 | } |
206 | } |
||
207 | |||
620 | daniel-mar | 208 | return self::$contentProvider; |
585 | daniel-mar | 209 | } |
210 | |||
211 | public function raLoginEx($email, &$loginfo) { |
||
212 | if (is_null(self::getActiveProvider())) { |
||
213 | $this->raLogin($email); |
||
214 | $loginfo = 'into new JWT session'; |
||
620 | daniel-mar | 215 | self::$contentProvider = $this; |
585 | daniel-mar | 216 | } else { |
217 | $gen = $this->getValue('oidplus_generator',-1); |
||
218 | switch ($gen) { |
||
219 | case OIDplusAuthContentStoreJWT::JWT_GENERATOR_AJAX : |
||
220 | case OIDplusAuthContentStoreJWT::JWT_GENERATOR_MANUAL : |
||
221 | throw new OIDplusException(_L('This kind of JWT token cannot be altered. Therefore you cannot do this action.')); |
||
222 | case OIDplusAuthContentStoreJWT::JWT_GENERATOR_LOGIN : |
||
223 | if (!OIDplus::baseConfig()->getValue('JWT_ALLOW_LOGIN_USER', true)) { |
||
224 | throw new OIDplusException(_L('You cannot add this login credential to your existing "remember me" session. You need to log-out first.')); |
||
225 | } |
||
226 | break; |
||
227 | default: |
||
228 | assert(false); // This cannot happen because jwtSecurityCheck will check for unknown generators |
||
229 | break; |
||
230 | } |
||
231 | $this->raLogin($email); |
||
232 | $loginfo = 'into existing JWT session'; |
||
233 | } |
||
234 | } |
||
235 | |||
236 | public function adminLoginEx(&$loginfo) { |
||
237 | if (is_null(self::getActiveProvider())) { |
||
238 | $this->adminLogin(); |
||
239 | $loginfo = 'into new JWT session'; |
||
620 | daniel-mar | 240 | self::$contentProvider = $this; |
585 | daniel-mar | 241 | } else { |
242 | $gen = $this->getValue('oidplus_generator',-1); |
||
243 | switch ($gen) { |
||
244 | case OIDplusAuthContentStoreJWT::JWT_GENERATOR_AJAX : |
||
245 | case OIDplusAuthContentStoreJWT::JWT_GENERATOR_MANUAL : |
||
246 | throw new OIDplusException(_L('This kind of JWT token cannot be altered. Therefore you cannot do this action.')); |
||
247 | case OIDplusAuthContentStoreJWT::JWT_GENERATOR_LOGIN : |
||
248 | if (!OIDplus::baseConfig()->getValue('JWT_ALLOW_LOGIN_ADMIN', true)) { |
||
249 | throw new OIDplusException(_L('You cannot add this login credential to your existing "remember me" session. You need to log-out first.')); |
||
250 | } |
||
251 | break; |
||
252 | default: |
||
253 | assert(false); // This cannot happen because jwtSecurityCheck will check for unknown generators |
||
254 | break; |
||
255 | } |
||
256 | $this->adminLogin(); |
||
257 | $loginfo = 'into existing JWT session'; |
||
258 | } |
||
259 | } |
||
260 | |||
566 | daniel-mar | 261 | // Individual functions |
262 | |||
570 | daniel-mar | 263 | public function loadJWT($jwt) { |
571 | daniel-mar | 264 | \Firebase\JWT\JWT::$leeway = 60; // leeway in seconds |
570 | daniel-mar | 265 | if (OIDplus::getPkiStatus()) { |
266 | $pubKey = OIDplus::config()->getValue('oidplus_public_key'); |
||
679 | daniel-mar | 267 | $k = new \Firebase\JWT\Key($pubKey, 'RS256'); // RSA+SHA256 ist hardcoded in getPkiStatus() generation |
268 | $this->content = (array) \Firebase\JWT\JWT::decode($jwt, $k); |
||
570 | daniel-mar | 269 | } else { |
622 | daniel-mar | 270 | $key = OIDplus::baseConfig()->getValue('SERVER_SECRET', '').'/OIDplusAuthContentStoreJWT'; |
570 | daniel-mar | 271 | $key = hash_pbkdf2('sha512', $key, '', 10000, 64/*256bit*/, false); |
679 | daniel-mar | 272 | $k = new \Firebase\JWT\Key($key, 'HS512'); // HMAC+SHA512 is hardcoded here |
273 | $this->content = (array) \Firebase\JWT\JWT::decode($jwt, $k); |
||
570 | daniel-mar | 274 | } |
566 | daniel-mar | 275 | } |
276 | |||
585 | daniel-mar | 277 | public function getJWTToken() { |
566 | daniel-mar | 278 | $payload = $this->content; |
279 | $payload["iss"] = "http://oidplus.com"; |
||
280 | $payload["aud"] = "http://oidplus.com"; |
||
570 | daniel-mar | 281 | $payload["jti"] = gen_uuid(); |
566 | daniel-mar | 282 | $payload["iat"] = time(); |
570 | daniel-mar | 283 | |
284 | if (OIDplus::getPkiStatus()) { |
||
285 | $privKey = OIDplus::config()->getValue('oidplus_private_key'); |
||
679 | daniel-mar | 286 | return \Firebase\JWT\JWT::encode($payload, $privKey, 'RS256'); // RSA+SHA256 ist hardcoded in getPkiStatus() generation |
570 | daniel-mar | 287 | } else { |
622 | daniel-mar | 288 | $key = OIDplus::baseConfig()->getValue('SERVER_SECRET', '').'/OIDplusAuthContentStoreJWT'; |
570 | daniel-mar | 289 | $key = hash_pbkdf2('sha512', $key, '', 10000, 64/*256bit*/, false); |
679 | daniel-mar | 290 | return \Firebase\JWT\JWT::encode($payload, $key, 'HS512'); // HMAC+SHA512 is hardcoded here |
570 | daniel-mar | 291 | } |
566 | daniel-mar | 292 | } |
293 | |||
570 | daniel-mar | 294 | } |