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566 | daniel-mar | 1 | <?php |
2 | |||
3 | /* |
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4 | * OIDplus 2.0 |
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1086 | daniel-mar | 5 | * Copyright 2019 - 2023 Daniel Marschall, ViaThinkSoft |
566 | daniel-mar | 6 | * |
7 | * Licensed under the Apache License, Version 2.0 (the "License"); |
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8 | * you may not use this file except in compliance with the License. |
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9 | * You may obtain a copy of the License at |
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10 | * |
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11 | * http://www.apache.org/licenses/LICENSE-2.0 |
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12 | * |
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13 | * Unless required by applicable law or agreed to in writing, software |
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14 | * distributed under the License is distributed on an "AS IS" BASIS, |
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15 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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16 | * See the License for the specific language governing permissions and |
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17 | * limitations under the License. |
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18 | */ |
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19 | |||
1050 | daniel-mar | 20 | namespace ViaThinkSoft\OIDplus; |
566 | daniel-mar | 21 | |
1086 | daniel-mar | 22 | // phpcs:disable PSR1.Files.SideEffects |
23 | \defined('INSIDE_OIDPLUS') or die; |
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24 | // phpcs:enable PSR1.Files.SideEffects |
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25 | |||
1303 | daniel-mar | 26 | /** |
1305 | daniel-mar | 27 | * Auth content store for JWT tokens (web browser login cookies, Automated AJAX argument, or REST Bearer) |
1303 | daniel-mar | 28 | */ |
1306 | daniel-mar | 29 | class OIDplusAuthContentStoreJWT implements OIDplusGetterSetterInterface { |
566 | daniel-mar | 30 | |
1130 | daniel-mar | 31 | /** |
32 | * Cookie name for the JWT auth token |
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33 | */ |
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585 | daniel-mar | 34 | const COOKIE_NAME = 'OIDPLUS_AUTH_JWT'; |
35 | |||
1130 | daniel-mar | 36 | /** |
1305 | daniel-mar | 37 | * Token generator; must be one of OIDplusAuthContentStoreJWT::JWT_GENERATOR_* |
38 | */ |
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39 | const CLAIM_GENERATOR = 'urn:oid:1.3.6.1.4.1.37476.2.5.2.7.1'; |
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40 | |||
41 | /** |
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42 | * List of logged-in users |
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43 | */ |
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44 | const CLAIM_LOGIN_LIST = 'urn:oid:1.3.6.1.4.1.37476.2.5.2.7.2'; |
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45 | |||
46 | /** |
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47 | * SSH = Server Secret Hash |
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48 | */ |
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49 | const CLAIM_SSH = 'urn:oid:1.3.6.1.4.1.37476.2.5.2.7.3'; |
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50 | |||
51 | /** |
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52 | * IP-Adress limit |
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53 | */ |
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54 | const CLAIM_LIMIT_IP = 'urn:oid:1.3.6.1.4.1.37476.2.5.2.7.4'; |
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55 | |||
56 | /** |
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1310 | daniel-mar | 57 | * Trace JTI, IP, and UserAgent |
58 | */ |
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59 | const CLAIM_TRACE = 'urn:oid:1.3.6.1.4.1.37476.2.5.2.7.5'; |
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60 | |||
61 | /** |
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1130 | daniel-mar | 62 | * "Automated AJAX" plugin |
63 | */ |
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1265 | daniel-mar | 64 | const JWT_GENERATOR_AJAX = 10; |
1130 | daniel-mar | 65 | /** |
1265 | daniel-mar | 66 | * "REST API" plugin |
67 | */ |
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68 | const JWT_GENERATOR_REST = 20; |
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69 | /** |
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1305 | daniel-mar | 70 | * Web browser login method |
1130 | daniel-mar | 71 | */ |
1265 | daniel-mar | 72 | const JWT_GENERATOR_LOGIN = 40; |
1130 | daniel-mar | 73 | /** |
74 | * "Manually crafted" JWT tokens |
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75 | */ |
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1265 | daniel-mar | 76 | const JWT_GENERATOR_MANUAL = 80; |
585 | daniel-mar | 77 | |
1116 | daniel-mar | 78 | /** |
79 | * @param int $gen OIDplusAuthContentStoreJWT::JWT_GENERATOR_... |
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80 | * @param string $sub |
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81 | * @return string |
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82 | */ |
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83 | private static function jwtGetBlacklistConfigKey(int $gen, string $sub): string { |
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1265 | daniel-mar | 84 | // Note: Needs to be <= 50 characters! If $gen is 2 chars, then the config key is 49 chars long |
585 | daniel-mar | 85 | return 'jwt_blacklist_gen('.$gen.')_sub('.trim(base64_encode(md5($sub,true)),'=').')'; |
86 | } |
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87 | |||
1116 | daniel-mar | 88 | /** |
1265 | daniel-mar | 89 | * @param int $gen |
90 | */ |
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91 | private static function generatorName($gen) { |
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92 | // Note: The strings are not translated, because the name is used in config keys or logs |
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93 | if ($gen === self::JWT_GENERATOR_AJAX) return 'Automated AJAX calls'; |
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94 | if ($gen === self::JWT_GENERATOR_REST) return 'REST API'; |
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1305 | daniel-mar | 95 | if ($gen === self::JWT_GENERATOR_LOGIN) return 'Browser login'; |
1265 | daniel-mar | 96 | if ($gen === self::JWT_GENERATOR_MANUAL) return 'Manually created'; |
97 | return 'Unknown generator'; |
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98 | } |
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99 | |||
100 | /** |
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1116 | daniel-mar | 101 | * @param int $gen OIDplusAuthContentStoreJWT::JWT_GENERATOR_... |
102 | * @param string $sub |
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103 | * @return void |
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104 | * @throws OIDplusException |
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105 | */ |
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106 | public static function jwtBlacklist(int $gen, string $sub) { |
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585 | daniel-mar | 107 | $cfg = self::jwtGetBlacklistConfigKey($gen, $sub); |
108 | $bl_time = time()-1; |
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109 | |||
1265 | daniel-mar | 110 | $gen_desc = self::generatorName($gen); |
585 | daniel-mar | 111 | |
1305 | daniel-mar | 112 | OIDplus::config()->prepareConfigKey($cfg, "Revoke timestamp of all JWT tokens for $sub with generator $gen ($gen_desc)", "$bl_time", OIDplusConfig::PROTECTION_HIDDEN, function($value) {}); |
585 | daniel-mar | 113 | OIDplus::config()->setValue($cfg, $bl_time); |
114 | } |
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115 | |||
1116 | daniel-mar | 116 | /** |
117 | * @param int $gen OIDplusAuthContentStoreJWT::JWT_GENERATOR_... |
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118 | * @param string $sub |
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119 | * @return int |
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120 | * @throws OIDplusException |
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121 | */ |
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122 | public static function jwtGetBlacklistTime(int $gen, string $sub): int { |
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585 | daniel-mar | 123 | $cfg = self::jwtGetBlacklistConfigKey($gen, $sub); |
1116 | daniel-mar | 124 | return (int)OIDplus::config()->getValue($cfg,0); |
585 | daniel-mar | 125 | } |
126 | |||
1116 | daniel-mar | 127 | /** |
1298 | daniel-mar | 128 | * We include a hash of the server-secret here (ssh = server-secret-hash), so that the JWT can be invalidated by changing the server-secret |
129 | * @return string |
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130 | * @throws OIDplusException |
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131 | */ |
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132 | private static function getSsh(): string { |
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1305 | daniel-mar | 133 | $hexadecimal_string = OIDplus::authUtils()->makeSecret(['bb1aebd6-fe6a-11ed-a553-3c4a92df8582']); |
134 | return base64_encode(pack('H*',$hexadecimal_string)); |
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1298 | daniel-mar | 135 | } |
136 | |||
137 | /** |
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1265 | daniel-mar | 138 | * Do various checks if the token is allowed and not blacklisted |
1305 | daniel-mar | 139 | * @param OIDplusAuthContentStoreJWT $contentProvider |
1277 | daniel-mar | 140 | * @param int|null $validGenerators Bitmask which generators to allow (null = allow all) |
1116 | daniel-mar | 141 | * @return void |
142 | * @throws OIDplusException |
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143 | */ |
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1305 | daniel-mar | 144 | private static function jwtSecurityCheck(OIDplusAuthContentStoreJWT $contentProvider, int $validGenerators=null) { |
585 | daniel-mar | 145 | // Check if the token is intended for us |
1308 | daniel-mar | 146 | // Note 'aud' is mandatory, so we do not check for exists() |
699 | daniel-mar | 147 | if ($contentProvider->getValue('aud','') !== OIDplus::getEditionInfo()['jwtaud']) { |
585 | daniel-mar | 148 | throw new OIDplusException(_L('Token has wrong audience')); |
149 | } |
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1298 | daniel-mar | 150 | |
1308 | daniel-mar | 151 | // Note CLAIM_SSH is mandatory, so we do not check for exists() |
1305 | daniel-mar | 152 | if ($contentProvider->getValue(self::CLAIM_SSH, '') !== self::getSsh()) { |
1298 | daniel-mar | 153 | throw new OIDplusException(_L('"Server Secret" was changed; therefore the JWT is not valid anymore')); |
154 | } |
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155 | |||
1308 | daniel-mar | 156 | // Note CLAIM_GENERATOR is mandatory, so we do not check for exists() |
1305 | daniel-mar | 157 | $gen = $contentProvider->getValue(self::CLAIM_GENERATOR, -1); |
585 | daniel-mar | 158 | |
159 | $has_admin = $contentProvider->isAdminLoggedIn(); |
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160 | $has_ra = $contentProvider->raNumLoggedIn() > 0; |
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161 | |||
162 | // Check if the token generator is allowed |
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163 | if ($gen === self::JWT_GENERATOR_AJAX) { |
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164 | if (($has_admin) && !OIDplus::baseConfig()->getValue('JWT_ALLOW_AJAX_ADMIN', true)) { |
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635 | daniel-mar | 165 | // Generator: plugins/viathinksoft/adminPages/910_automated_ajax_calls/OIDplusPageAdminAutomatedAJAXCalls.class.php |
585 | daniel-mar | 166 | throw new OIDplusException(_L('The administrator has disabled this feature. (Base configuration setting %1).','JWT_ALLOW_AJAX_ADMIN')); |
167 | } |
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168 | if (($has_ra) && !OIDplus::baseConfig()->getValue('JWT_ALLOW_AJAX_USER', true)) { |
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635 | daniel-mar | 169 | // Generator: plugins/viathinksoft/raPages/910_automated_ajax_calls/OIDplusPageRaAutomatedAJAXCalls.class.php |
585 | daniel-mar | 170 | throw new OIDplusException(_L('The administrator has disabled this feature. (Base configuration setting %1).','JWT_ALLOW_AJAX_USER')); |
171 | } |
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172 | } |
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1265 | daniel-mar | 173 | else if ($gen === self::JWT_GENERATOR_REST) { |
174 | if (($has_admin) && !OIDplus::baseConfig()->getValue('JWT_ALLOW_REST_ADMIN', true)) { |
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175 | // Generator: plugins/viathinksoft/adminPages/911_rest_api/OIDplusPageAdminRestApi.class.php |
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176 | throw new OIDplusException(_L('The administrator has disabled this feature. (Base configuration setting %1).','JWT_ALLOW_REST_ADMIN')); |
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177 | } |
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178 | if (($has_ra) && !OIDplus::baseConfig()->getValue('JWT_ALLOW_REST_USER', true)) { |
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179 | // Generator: plugins/viathinksoft/raPages/911_rest_api/OIDplusPageRaRestApi.class.php |
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180 | throw new OIDplusException(_L('The administrator has disabled this feature. (Base configuration setting %1).','JWT_ALLOW_REST_USER')); |
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181 | } |
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182 | } |
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585 | daniel-mar | 183 | else if ($gen === self::JWT_GENERATOR_LOGIN) { |
1305 | daniel-mar | 184 | // Used for web browser login (use JWT token in a cookie as alternative to PHP session): |
585 | daniel-mar | 185 | // - No PHP session will be used |
186 | // - Session will not be bound to IP address (therefore, you can switch between mobile/WiFi for example) |
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187 | // - No server-side session needed |
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188 | if (($has_admin) && !OIDplus::baseConfig()->getValue('JWT_ALLOW_LOGIN_ADMIN', true)) { |
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189 | throw new OIDplusException(_L('The administrator has disabled this feature. (Base configuration setting %1).','JWT_ALLOW_LOGIN_ADMIN')); |
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190 | } |
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191 | if (($has_ra) && !OIDplus::baseConfig()->getValue('JWT_ALLOW_LOGIN_USER', true)) { |
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192 | throw new OIDplusException(_L('The administrator has disabled this feature. (Base configuration setting %1).','JWT_ALLOW_LOGIN_USER')); |
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193 | } |
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194 | } |
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195 | else if ($gen === self::JWT_GENERATOR_MANUAL) { |
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1300 | daniel-mar | 196 | // Generator: "hand-crafted" tokens |
197 | if (($has_admin) && !OIDplus::baseConfig()->getValue('JWT_ALLOW_MANUAL_ADMIN', false)) { |
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198 | throw new OIDplusException(_L('The administrator has disabled this feature. (Base configuration setting %1).','JWT_ALLOW_MANUAL_ADMIN')); |
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585 | daniel-mar | 199 | } |
1300 | daniel-mar | 200 | if (($has_ra) && !OIDplus::baseConfig()->getValue('JWT_ALLOW_MANUAL_USER', false)) { |
201 | throw new OIDplusException(_L('The administrator has disabled this feature. (Base configuration setting %1).','JWT_ALLOW_MANUAL_USER')); |
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202 | } |
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585 | daniel-mar | 203 | } else { |
204 | throw new OIDplusException(_L('Token generator %1 not recognized',$gen)); |
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205 | } |
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206 | |||
1307 | daniel-mar | 207 | // Every token must have and issued timestamp |
208 | $iat = $contentProvider->getValue('iat',null); |
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209 | if (is_null($iat)) { |
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210 | throw new OIDplusException(_L('The claim "%1" of the JWT token is missing or invalid','iat')); |
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211 | } |
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212 | |||
213 | // Verify that IAT has a valid value |
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214 | // Note: This check is already done in Firebase\JWT. However, we do it again, just to be 100% sure. |
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215 | if (($iat-120/*leeway 2min*/) > time()) { |
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216 | // Token was created in the future. Something is wrong! |
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217 | throw new OIDplusException(_L('JWT Token cannot be verified because the server time is wrong')); |
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218 | } |
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219 | |||
220 | // Check if token is not yet valid |
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221 | // Note: This check is already done in Firebase\JWT. However, we do it again, just to be 100% sure. |
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222 | $nbf = $contentProvider->getValue('nbf',null); |
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223 | if (!is_null($nbf)) { |
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224 | if (time() < $nbf-120/*leeway 2min*/) { |
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225 | throw new OIDplusException(_L('Token not valid before %1',date('d F Y, H:i:s',$nbf))); |
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226 | } |
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227 | } |
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228 | |||
1306 | daniel-mar | 229 | // Check if token has expired |
1307 | daniel-mar | 230 | // Note: This check is already done in Firebase\JWT. However, we do it again, just to be 100% sure. |
1306 | daniel-mar | 231 | $exp = $contentProvider->getValue('exp',null); |
232 | if (!is_null($exp)) { |
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1307 | daniel-mar | 233 | if (time() > $exp+120/*leeway 2min*/) { |
1306 | daniel-mar | 234 | throw new OIDplusException(_L('Token has expired on %1',date('d F Y, H:i:s',$exp))); |
235 | } |
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236 | } |
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237 | |||
585 | daniel-mar | 238 | // Make sure that the IAT (issued at time) isn't in a blacklisted timeframe |
239 | // When an user believes that a token was compromised, then they can blacklist the tokens identified by their "iat" ("Issued at") property |
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1305 | daniel-mar | 240 | // When a user logs out of a web browser session, the JWT token will be blacklisted as well |
241 | // Small side effect: All web browser login sessions of that user will be revoked then |
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585 | daniel-mar | 242 | $sublist = $contentProvider->loggedInRaList(); |
1281 | daniel-mar | 243 | $usernames = array(); |
244 | foreach ($sublist as $sub) { |
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245 | $usernames[] = $sub->raEmail(); |
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585 | daniel-mar | 246 | } |
1281 | daniel-mar | 247 | if ($has_admin) $usernames[] = 'admin'; |
248 | foreach ($usernames as $username) { |
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249 | $bl_time = self::jwtGetBlacklistTime($gen, $username); |
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585 | daniel-mar | 250 | if ($iat <= $bl_time) { |
1281 | daniel-mar | 251 | // Token is blacklisted (it was created before the last blacklist time) |
585 | daniel-mar | 252 | throw new OIDplusException(_L('The JWT token was blacklisted on %1. Please generate a new one',date('d F Y, H:i:s',$bl_time))); |
253 | } |
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254 | } |
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255 | |||
256 | // Optional feature: Limit the JWT to a specific IP address |
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257 | // Currently not used in OIDplus |
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1305 | daniel-mar | 258 | $ip = $contentProvider->getValue(self::CLAIM_LIMIT_IP, null); |
259 | if (!is_null($ip)) { |
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585 | daniel-mar | 260 | if (isset($_SERVER['REMOTE_ADDR']) && ($ip !== $_SERVER['REMOTE_ADDR'])) { |
261 | throw new OIDplusException(_L('Your IP address is not allowed to use this token')); |
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262 | } |
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263 | } |
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264 | |||
1265 | daniel-mar | 265 | // Checks if JWT are dependent on the generator |
1277 | daniel-mar | 266 | if (!is_null($validGenerators)) { |
1265 | daniel-mar | 267 | if (($gen & $validGenerators) === 0) { |
268 | throw new OIDplusException(_L('This kind of JWT token (%1) cannot be used in this request type', self::generatorName($gen))); |
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585 | daniel-mar | 269 | } |
270 | } |
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271 | } |
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272 | |||
273 | // Override abstract functions |
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274 | |||
1116 | daniel-mar | 275 | /** |
1301 | daniel-mar | 276 | * @var array |
277 | */ |
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278 | protected $content = array(); |
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279 | |||
280 | /** |
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281 | * @param string $name |
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282 | * @param mixed|null $default |
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283 | * @return mixed|null |
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284 | */ |
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285 | public function getValue(string $name, $default = NULL) { |
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286 | return $this->content[$name] ?? $default; |
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287 | } |
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288 | |||
289 | /** |
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290 | * @param string $name |
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291 | * @param mixed $value |
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1116 | daniel-mar | 292 | * @return void |
293 | */ |
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1301 | daniel-mar | 294 | public function setValue(string $name, $value) { |
295 | $this->content[$name] = $value; |
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296 | } |
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297 | |||
298 | /** |
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299 | * @param string $name |
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300 | * @return bool |
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301 | */ |
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302 | public function exists(string $name): bool { |
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303 | return isset($this->content[$name]); |
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304 | } |
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305 | |||
306 | /** |
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307 | * @param string $name |
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308 | * @return void |
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309 | */ |
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310 | public function delete(string $name) { |
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311 | unset($this->content[$name]); |
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312 | } |
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313 | |||
314 | /** |
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315 | * @return void |
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316 | */ |
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585 | daniel-mar | 317 | public function activate() { |
620 | daniel-mar | 318 | // Send cookie at the end of the HTTP request, in case there are multiple activate() calls |
639 | daniel-mar | 319 | OIDplus::register_shutdown_function(array($this,'activateNow')); |
620 | daniel-mar | 320 | } |
321 | |||
1116 | daniel-mar | 322 | /** |
323 | * @return void |
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324 | * @throws OIDplusException |
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325 | */ |
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620 | daniel-mar | 326 | public function activateNow() { |
585 | daniel-mar | 327 | $token = $this->getJWTToken(); |
328 | $exp = $this->getValue('exp',0); |
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329 | OIDplus::cookieUtils()->setcookie(self::COOKIE_NAME, $token, $exp, false); |
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330 | } |
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331 | |||
1116 | daniel-mar | 332 | /** |
333 | * @return void |
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334 | * @throws OIDplusException |
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335 | */ |
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585 | daniel-mar | 336 | public function destroySession() { |
337 | OIDplus::cookieUtils()->unsetcookie(self::COOKIE_NAME); |
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338 | } |
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339 | |||
1305 | daniel-mar | 340 | // RA authentication functions (low-level) |
341 | |||
1116 | daniel-mar | 342 | /** |
343 | * @param string $email |
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344 | * @return void |
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1305 | daniel-mar | 345 | */ |
346 | public function raLogin(string $email) { |
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347 | if ($email == 'admin') return; |
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348 | |||
349 | $list = $this->getValue(self::CLAIM_LOGIN_LIST, null); |
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350 | if (is_null($list)) $list = []; |
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351 | if (!in_array($email, $list)) $list[] = $email; |
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352 | $this->setValue(self::CLAIM_LOGIN_LIST, $list); |
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353 | } |
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354 | |||
355 | /** |
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356 | * @return int |
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357 | */ |
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358 | public function raNumLoggedIn(): int { |
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359 | return count($this->loggedInRaList()); |
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360 | } |
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361 | |||
362 | /** |
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363 | * @return OIDplusRA[] |
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364 | */ |
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365 | public function loggedInRaList(): array { |
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366 | $list = $this->getValue(self::CLAIM_LOGIN_LIST, null); |
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367 | if (is_null($list)) $list = []; |
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368 | |||
369 | $res = array(); |
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370 | foreach (array_unique($list) as $username) { |
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371 | if ($username == '') continue; // should not happen |
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372 | if ($username == 'admin') continue; |
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373 | $res[] = new OIDplusRA($username); |
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374 | } |
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375 | return $res; |
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376 | } |
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377 | |||
378 | /** |
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379 | * @param string $email |
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380 | * @return bool |
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381 | */ |
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382 | public function isRaLoggedIn(string $email): bool { |
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383 | foreach ($this->loggedInRaList() as $ra) { |
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384 | if ($email == $ra->raEmail()) return true; |
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385 | } |
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386 | return false; |
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387 | } |
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388 | |||
389 | /** |
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390 | * @param string $email |
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391 | * @return void |
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1116 | daniel-mar | 392 | * @throws OIDplusException |
393 | */ |
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394 | public function raLogout(string $email) { |
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1305 | daniel-mar | 395 | if ($email == 'admin') return; |
396 | |||
397 | $gen = $this->getValue(self::CLAIM_GENERATOR, -1); |
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585 | daniel-mar | 398 | if ($gen >= 0) self::jwtBlacklist($gen, $email); |
1305 | daniel-mar | 399 | |
400 | $list = $this->getValue(self::CLAIM_LOGIN_LIST, null); |
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401 | if (is_null($list)) $list = []; |
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402 | $key = array_search($email, $list); |
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403 | if ($key !== false) unset($list[$key]); |
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404 | $this->setValue(self::CLAIM_LOGIN_LIST, $list); |
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585 | daniel-mar | 405 | } |
406 | |||
1116 | daniel-mar | 407 | /** |
408 | * @param string $email |
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409 | * @param string $loginfo |
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410 | * @return void |
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411 | * @throws OIDplusException |
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412 | */ |
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413 | public function raLogoutEx(string $email, string &$loginfo) { |
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585 | daniel-mar | 414 | $this->raLogout($email); |
415 | $loginfo = 'from JWT session'; |
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416 | } |
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417 | |||
1305 | daniel-mar | 418 | // Admin authentication functions (low-level) |
419 | |||
1116 | daniel-mar | 420 | /** |
421 | * @return void |
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1305 | daniel-mar | 422 | */ |
423 | public function adminLogin() { |
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424 | $list = $this->getValue(self::CLAIM_LOGIN_LIST, null); |
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425 | if (is_null($list)) $list = []; |
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426 | if (!in_array('admin', $list)) $list[] = 'admin'; |
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427 | $this->setValue(self::CLAIM_LOGIN_LIST, $list); |
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428 | } |
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429 | |||
430 | /** |
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431 | * @return bool |
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432 | */ |
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433 | public function isAdminLoggedIn(): bool { |
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434 | $list = $this->getValue(self::CLAIM_LOGIN_LIST, null); |
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435 | if (is_null($list)) $list = []; |
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436 | return in_array('admin', $list); |
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437 | } |
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438 | |||
439 | /** |
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440 | * @return void |
||
1116 | daniel-mar | 441 | * @throws OIDplusException |
442 | */ |
||
585 | daniel-mar | 443 | public function adminLogout() { |
1305 | daniel-mar | 444 | $gen = $this->getValue(self::CLAIM_GENERATOR, -1); |
585 | daniel-mar | 445 | if ($gen >= 0) self::jwtBlacklist($gen, 'admin'); |
1305 | daniel-mar | 446 | |
447 | $list = $this->getValue(self::CLAIM_LOGIN_LIST, null); |
||
448 | if (is_null($list)) $list = []; |
||
449 | $key = array_search('admin', $list); |
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450 | if ($key !== false) unset($list[$key]); |
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451 | $this->setValue(self::CLAIM_LOGIN_LIST, $list); |
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585 | daniel-mar | 452 | } |
453 | |||
1116 | daniel-mar | 454 | /** |
455 | * @param string $loginfo |
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456 | * @return void |
||
457 | * @throws OIDplusException |
||
458 | */ |
||
459 | public function adminLogoutEx(string &$loginfo) { |
||
585 | daniel-mar | 460 | $this->adminLogout(); |
461 | $loginfo = 'from JWT session'; |
||
462 | } |
||
463 | |||
620 | daniel-mar | 464 | private static $contentProvider = null; |
1116 | daniel-mar | 465 | |
466 | /** |
||
1305 | daniel-mar | 467 | * @return OIDplusAuthContentStoreJWT|null |
1116 | daniel-mar | 468 | * @throws OIDplusException |
469 | */ |
||
1305 | daniel-mar | 470 | public static function getActiveProvider()/*: ?OIDplusAuthContentStoreJWT*/ { |
620 | daniel-mar | 471 | if (!self::$contentProvider) { |
585 | daniel-mar | 472 | |
1265 | daniel-mar | 473 | $tmp = null; |
474 | $silent_error = false; |
||
585 | daniel-mar | 475 | |
1265 | daniel-mar | 476 | try { |
585 | daniel-mar | 477 | |
1265 | daniel-mar | 478 | $rel_url = substr($_SERVER['REQUEST_URI'], strlen(OIDplus::webpath(null, OIDplus::PATH_RELATIVE_TO_ROOT))); |
479 | if (str_starts_with($rel_url, 'rest/')) { // <== TODO: Find a way how to move this into the plugin, since REST does not belong to the core. |
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480 | |||
481 | // REST may only use Bearer Authentication |
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482 | $bearer = getBearerToken(); |
||
483 | if (!is_null($bearer)) { |
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484 | $silent_error = false; |
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485 | $tmp = new OIDplusAuthContentStoreJWT(); |
||
486 | $tmp->loadJWT($bearer); |
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487 | self::jwtSecurityCheck($tmp, self::JWT_GENERATOR_REST | self::JWT_GENERATOR_MANUAL); |
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585 | daniel-mar | 488 | } |
1265 | daniel-mar | 489 | |
490 | } else { |
||
491 | |||
1305 | daniel-mar | 492 | // A web-visitor (HTML and AJAX, but not REST) can use a JWT Cookie |
1265 | daniel-mar | 493 | if (isset($_COOKIE[self::COOKIE_NAME])) { |
494 | $silent_error = true; |
||
495 | $tmp = new OIDplusAuthContentStoreJWT(); |
||
496 | $tmp->loadJWT($_COOKIE[self::COOKIE_NAME]); |
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497 | self::jwtSecurityCheck($tmp, self::JWT_GENERATOR_LOGIN | self::JWT_GENERATOR_MANUAL); |
||
498 | } |
||
499 | |||
1305 | daniel-mar | 500 | // AJAX may additionally use GET/POST automated AJAX (in addition to the normal web browser login Cookie) |
1265 | daniel-mar | 501 | if (isset($_SERVER['SCRIPT_FILENAME']) && (strtolower(basename($_SERVER['SCRIPT_FILENAME'])) !== 'ajax.php')) { |
502 | if (isset($_POST[self::COOKIE_NAME])) { |
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503 | $silent_error = false; |
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504 | $tmp = new OIDplusAuthContentStoreJWT(); |
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505 | $tmp->loadJWT($_POST[self::COOKIE_NAME]); |
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506 | self::jwtSecurityCheck($tmp, self::JWT_GENERATOR_AJAX | self::JWT_GENERATOR_MANUAL); |
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507 | } |
||
508 | if (isset($_GET[self::COOKIE_NAME])) { |
||
509 | $silent_error = false; |
||
510 | $tmp = new OIDplusAuthContentStoreJWT(); |
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511 | $tmp->loadJWT($_GET[self::COOKIE_NAME]); |
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512 | self::jwtSecurityCheck($tmp, self::JWT_GENERATOR_AJAX | self::JWT_GENERATOR_MANUAL); |
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513 | } |
||
514 | } |
||
515 | |||
585 | daniel-mar | 516 | } |
517 | |||
1265 | daniel-mar | 518 | } catch (\Exception $e) { |
1306 | daniel-mar | 519 | if (!$silent_error || OIDplus::baseConfig()->getValue('DEBUG',false)) { |
1265 | daniel-mar | 520 | // Most likely an AJAX request. We can throw an Exception |
521 | throw new OIDplusException(_L('The JWT token was rejected: %1',$e->getMessage())); |
||
522 | } else { |
||
523 | // Most likely an expired Cookie/Login session. We must not throw an Exception, otherwise we will break jsTree |
||
524 | OIDplus::cookieUtils()->unsetcookie(self::COOKIE_NAME); |
||
525 | return null; |
||
526 | } |
||
585 | daniel-mar | 527 | } |
1265 | daniel-mar | 528 | |
529 | self::$contentProvider = $tmp; |
||
585 | daniel-mar | 530 | } |
531 | |||
620 | daniel-mar | 532 | return self::$contentProvider; |
585 | daniel-mar | 533 | } |
534 | |||
1116 | daniel-mar | 535 | /** |
536 | * @param string $email |
||
537 | * @param string $loginfo |
||
538 | * @return void |
||
539 | * @throws OIDplusException |
||
540 | */ |
||
541 | public function raLoginEx(string $email, string &$loginfo) { |
||
585 | daniel-mar | 542 | if (is_null(self::getActiveProvider())) { |
543 | $this->raLogin($email); |
||
544 | $loginfo = 'into new JWT session'; |
||
620 | daniel-mar | 545 | self::$contentProvider = $this; |
585 | daniel-mar | 546 | } else { |
1305 | daniel-mar | 547 | $gen = $this->getValue(self::CLAIM_GENERATOR,-1); |
585 | daniel-mar | 548 | switch ($gen) { |
549 | case OIDplusAuthContentStoreJWT::JWT_GENERATOR_AJAX : |
||
1265 | daniel-mar | 550 | case OIDplusAuthContentStoreJWT::JWT_GENERATOR_REST : |
585 | daniel-mar | 551 | case OIDplusAuthContentStoreJWT::JWT_GENERATOR_MANUAL : |
552 | throw new OIDplusException(_L('This kind of JWT token cannot be altered. Therefore you cannot do this action.')); |
||
553 | case OIDplusAuthContentStoreJWT::JWT_GENERATOR_LOGIN : |
||
554 | if (!OIDplus::baseConfig()->getValue('JWT_ALLOW_LOGIN_USER', true)) { |
||
1305 | daniel-mar | 555 | throw new OIDplusException(_L('The administrator has disabled this feature. (Base configuration setting %1).','JWT_ALLOW_LOGIN_USER')); |
585 | daniel-mar | 556 | } |
557 | break; |
||
558 | default: |
||
559 | assert(false); // This cannot happen because jwtSecurityCheck will check for unknown generators |
||
560 | break; |
||
561 | } |
||
562 | $this->raLogin($email); |
||
563 | $loginfo = 'into existing JWT session'; |
||
564 | } |
||
1306 | daniel-mar | 565 | $ttl = OIDplus::baseConfig()->getValue('JWT_TTL_LOGIN_USER', 10*365*24*60*60); |
566 | $this->setValue('exp', time()+$ttl); // JWT "exp" attribute |
||
585 | daniel-mar | 567 | } |
568 | |||
1116 | daniel-mar | 569 | /** |
570 | * @param string $loginfo |
||
571 | * @return void |
||
572 | * @throws OIDplusException |
||
573 | */ |
||
574 | public function adminLoginEx(string &$loginfo) { |
||
585 | daniel-mar | 575 | if (is_null(self::getActiveProvider())) { |
576 | $this->adminLogin(); |
||
577 | $loginfo = 'into new JWT session'; |
||
620 | daniel-mar | 578 | self::$contentProvider = $this; |
585 | daniel-mar | 579 | } else { |
1305 | daniel-mar | 580 | $gen = $this->getValue(self::CLAIM_GENERATOR,-1); |
585 | daniel-mar | 581 | switch ($gen) { |
582 | case OIDplusAuthContentStoreJWT::JWT_GENERATOR_AJAX : |
||
1265 | daniel-mar | 583 | case OIDplusAuthContentStoreJWT::JWT_GENERATOR_REST : |
585 | daniel-mar | 584 | case OIDplusAuthContentStoreJWT::JWT_GENERATOR_MANUAL : |
585 | throw new OIDplusException(_L('This kind of JWT token cannot be altered. Therefore you cannot do this action.')); |
||
586 | case OIDplusAuthContentStoreJWT::JWT_GENERATOR_LOGIN : |
||
587 | if (!OIDplus::baseConfig()->getValue('JWT_ALLOW_LOGIN_ADMIN', true)) { |
||
1305 | daniel-mar | 588 | throw new OIDplusException(_L('The administrator has disabled this feature. (Base configuration setting %1).','JWT_ALLOW_LOGIN_ADMIN')); |
585 | daniel-mar | 589 | } |
590 | break; |
||
591 | default: |
||
592 | assert(false); // This cannot happen because jwtSecurityCheck will check for unknown generators |
||
593 | break; |
||
594 | } |
||
595 | $this->adminLogin(); |
||
596 | $loginfo = 'into existing JWT session'; |
||
597 | } |
||
1306 | daniel-mar | 598 | $ttl = OIDplus::baseConfig()->getValue('JWT_TTL_LOGIN_ADMIN', 10*365*24*60*60); |
599 | $this->setValue('exp', time()+$ttl); // JWT "exp" attribute |
||
585 | daniel-mar | 600 | } |
601 | |||
566 | daniel-mar | 602 | // Individual functions |
603 | |||
1116 | daniel-mar | 604 | /** |
1265 | daniel-mar | 605 | * Decode the JWT. In this step, the signature as well as EXP/NBF times will be checked |
1116 | daniel-mar | 606 | * @param string $jwt |
607 | * @return void |
||
608 | * @throws OIDplusException |
||
609 | */ |
||
610 | public function loadJWT(string $jwt) { |
||
571 | daniel-mar | 611 | \Firebase\JWT\JWT::$leeway = 60; // leeway in seconds |
570 | daniel-mar | 612 | if (OIDplus::getPkiStatus()) { |
830 | daniel-mar | 613 | $pubKey = OIDplus::getSystemPublicKey(); |
1298 | daniel-mar | 614 | $k = new \Firebase\JWT\Key($pubKey, 'RS256'); // RSA+SHA256 is hardcoded in getPkiStatus() generation |
679 | daniel-mar | 615 | $this->content = (array) \Firebase\JWT\JWT::decode($jwt, $k); |
570 | daniel-mar | 616 | } else { |
1283 | daniel-mar | 617 | $key = OIDplus::authUtils()->makeSecret(['0be35e52-f4ef-11ed-b67e-3c4a92df8582']); |
826 | daniel-mar | 618 | $key = hash_pbkdf2('sha512', $key, '', 10000, 32/*256bit*/, false); |
679 | daniel-mar | 619 | $k = new \Firebase\JWT\Key($key, 'HS512'); // HMAC+SHA512 is hardcoded here |
620 | $this->content = (array) \Firebase\JWT\JWT::decode($jwt, $k); |
||
570 | daniel-mar | 621 | } |
566 | daniel-mar | 622 | } |
623 | |||
1116 | daniel-mar | 624 | /** |
625 | * @return string |
||
626 | * @throws OIDplusException |
||
627 | */ |
||
628 | public function getJWTToken(): string { |
||
566 | daniel-mar | 629 | $payload = $this->content; |
1305 | daniel-mar | 630 | $payload[self::CLAIM_SSH] = self::getSsh(); // SSH = Server Secret Hash |
1307 | daniel-mar | 631 | // see also https://www.iana.org/assignments/jwt/jwt.xhtml#claims for some generic claims |
632 | $payload["iss"] = OIDplus::getEditionInfo()['jwtaud']; // sic: jwtaud |
||
699 | daniel-mar | 633 | $payload["aud"] = OIDplus::getEditionInfo()['jwtaud']; |
570 | daniel-mar | 634 | $payload["jti"] = gen_uuid(); |
566 | daniel-mar | 635 | $payload["iat"] = time(); |
1307 | daniel-mar | 636 | if (!isset($payload["nbf"])) $payload["nbf"] = time(); |
1306 | daniel-mar | 637 | if (!isset($payload["exp"])) $payload["exp"] = time()+3600/*1h*/; |
570 | daniel-mar | 638 | |
1310 | daniel-mar | 639 | if (!isset($payload[self::CLAIM_TRACE])) { |
640 | // "Trace" can be used for later updates |
||
641 | // For example, if the IP changes "too much" (different country, different AS, etc.) |
||
642 | // Or revoke all tokens from a single login flow (sequence 1, 2, 3, ...) |
||
643 | $payload[self::CLAIM_TRACE] = array(); |
||
644 | $payload[self::CLAIM_TRACE]['jti_1st'] = $payload["jti"]; |
||
645 | $payload[self::CLAIM_TRACE]['seq'] = 1; |
||
646 | $payload[self::CLAIM_TRACE]['ip'] = $_SERVER['REMOTE_ADDR'] ?? ''; |
||
647 | $payload[self::CLAIM_TRACE]['ip_1st'] = $payload[self::CLAIM_TRACE]['ip']; |
||
648 | $payload[self::CLAIM_TRACE]['ua'] = $_SERVER['HTTP_USER_AGENT'] ?? ''; |
||
649 | $payload[self::CLAIM_TRACE]['ua_1st'] = $payload[self::CLAIM_TRACE]['ua']; |
||
650 | } else { |
||
651 | assert(is_numeric($payload[self::CLAIM_TRACE]['seq'])); |
||
652 | $payload[self::CLAIM_TRACE]['seq']++; |
||
653 | $payload[self::CLAIM_TRACE]['ip'] = $_SERVER['REMOTE_ADDR'] ?? ''; |
||
654 | $payload[self::CLAIM_TRACE]['ua'] = $_SERVER['HTTP_USER_AGENT'] ?? ''; |
||
655 | } |
||
656 | |||
1306 | daniel-mar | 657 | uksort($payload, "strnatcmp"); // this is natsort on the key. Just to make the JWT look nicer. |
658 | |||
570 | daniel-mar | 659 | if (OIDplus::getPkiStatus()) { |
830 | daniel-mar | 660 | $privKey = OIDplus::getSystemPrivateKey(); |
1298 | daniel-mar | 661 | return \Firebase\JWT\JWT::encode($payload, $privKey, 'RS256'); // RSA+SHA256 is hardcoded in getPkiStatus() generation |
570 | daniel-mar | 662 | } else { |
1283 | daniel-mar | 663 | $key = OIDplus::authUtils()->makeSecret(['0be35e52-f4ef-11ed-b67e-3c4a92df8582']); |
826 | daniel-mar | 664 | $key = hash_pbkdf2('sha512', $key, '', 10000, 32/*256bit*/, false); |
679 | daniel-mar | 665 | return \Firebase\JWT\JWT::encode($payload, $key, 'HS512'); // HMAC+SHA512 is hardcoded here |
570 | daniel-mar | 666 | } |
566 | daniel-mar | 667 | } |
668 | |||
570 | daniel-mar | 669 | } |