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2 | daniel-mar | 1 | <?php |
2 | |||
3 | /* |
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4 | * OIDplus 2.0 |
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511 | daniel-mar | 5 | * Copyright 2019 - 2021 Daniel Marschall, ViaThinkSoft |
2 | 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 | |||
511 | daniel-mar | 20 | if (!defined('INSIDE_OIDPLUS')) die(); |
21 | |||
2 | daniel-mar | 22 | class OIDplusAuthUtils { |
23 | |||
457 | daniel-mar | 24 | public static function getRandomBytes($len) { |
25 | if (function_exists('openssl_random_pseudo_bytes')) { |
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26 | $a = openssl_random_pseudo_bytes($len); |
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27 | if ($a) return $a; |
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28 | } |
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29 | |||
465 | daniel-mar | 30 | if (function_exists('mcrypt_create_iv')) { |
466 | daniel-mar | 31 | $a = bin2hex(mcrypt_create_iv($len, MCRYPT_DEV_URANDOM)); |
465 | daniel-mar | 32 | if ($a) return $a; |
33 | } |
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34 | |||
457 | daniel-mar | 35 | if (function_exists('random_bytes')) { |
36 | $a = random_bytes($len); |
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37 | if ($a) return $a; |
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38 | } |
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39 | |||
40 | // Fallback to non-secure RNG |
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41 | $a = ''; |
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42 | while (strlen($a) < $len*2) { |
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43 | $a .= sha1(uniqid(mt_rand(), true)); |
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44 | } |
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45 | $a = substr($a, 0, $len*2); |
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46 | return hex2bin($a); |
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47 | } |
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48 | |||
14 | daniel-mar | 49 | // RA authentication functions |
2 | daniel-mar | 50 | |
51 | public static function raLogin($email) { |
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52 | if (strpos($email, '|') !== false) return; |
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53 | |||
42 | daniel-mar | 54 | $ses = OIDplus::sesHandler(); |
2 | daniel-mar | 55 | $list = $ses->getValue('oidplus_logged_in'); |
56 | if (is_null($list)) $list = ''; |
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57 | |||
58 | $ary = ($list == '') ? array() : explode('|', $list); |
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59 | if (!in_array($email, $ary)) $ary[] = $email; |
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60 | $list = implode('|', $ary); |
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61 | |||
62 | $ses->setValue('oidplus_logged_in', $list); |
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63 | } |
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64 | |||
65 | public static function raLogout($email) { |
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42 | daniel-mar | 66 | $ses = OIDplus::sesHandler(); |
2 | daniel-mar | 67 | $list = $ses->getValue('oidplus_logged_in'); |
68 | if (is_null($list)) $list = ''; |
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69 | |||
70 | $ary = ($list == '') ? array() : explode('|', $list); |
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71 | $key = array_search($email, $ary); |
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72 | if ($key !== false) unset($ary[$key]); |
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73 | $list = implode('|', $ary); |
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74 | |||
75 | $ses->setValue('oidplus_logged_in', $list); |
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85 | daniel-mar | 76 | |
179 | daniel-mar | 77 | if (($list == '') && (!self::isAdminLoggedIn())) { |
85 | daniel-mar | 78 | // Nobody logged in anymore. Destroy session cookie to make GDPR people happy |
79 | $ses->destroySession(); |
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80 | } |
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2 | daniel-mar | 81 | } |
82 | |||
329 | daniel-mar | 83 | public static function raCheckPassword($ra_email, $password) { |
84 | $ra = new OIDplusRA($ra_email); |
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453 | daniel-mar | 85 | |
459 | daniel-mar | 86 | $authInfo = $ra->getAuthInfo(); |
453 | daniel-mar | 87 | |
88 | $plugins = OIDplus::getAuthPlugins(); |
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89 | if (count($plugins) == 0) { |
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90 | throw new OIDplusException(_L('No RA authentication plugins found')); |
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91 | } |
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92 | foreach ($plugins as $plugin) { |
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459 | daniel-mar | 93 | if ($plugin->verify($authInfo, $password)) return true; |
453 | daniel-mar | 94 | } |
95 | |||
96 | return false; |
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329 | daniel-mar | 97 | } |
98 | |||
85 | daniel-mar | 99 | public static function raNumLoggedIn() { |
329 | daniel-mar | 100 | return count(self::loggedInRaList()); |
85 | daniel-mar | 101 | } |
102 | |||
2 | daniel-mar | 103 | public static function raLogoutAll() { |
42 | daniel-mar | 104 | $ses = OIDplus::sesHandler(); |
2 | daniel-mar | 105 | $ses->setValue('oidplus_logged_in', ''); |
106 | } |
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107 | |||
108 | public static function loggedInRaList() { |
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329 | daniel-mar | 109 | if (self::forceAllLoggedOut()) { |
282 | daniel-mar | 110 | return array(); |
111 | } |
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329 | daniel-mar | 112 | |
42 | daniel-mar | 113 | $ses = OIDplus::sesHandler(); |
2 | daniel-mar | 114 | $list = $ses->getValue('oidplus_logged_in'); |
115 | if (is_null($list)) $list = ''; |
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115 | daniel-mar | 116 | |
117 | $res = array(); |
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329 | daniel-mar | 118 | foreach (array_unique(explode('|',$list)) as $ra_email) { |
115 | daniel-mar | 119 | if ($ra_email == '') continue; |
120 | $res[] = new OIDplusRA($ra_email); |
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121 | } |
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122 | return $res; |
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2 | daniel-mar | 123 | } |
124 | |||
125 | public static function isRaLoggedIn($email) { |
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115 | daniel-mar | 126 | foreach (self::loggedInRaList() as $ra) { |
127 | if ($email == $ra->raEmail()) return true; |
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128 | } |
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129 | return false; |
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2 | daniel-mar | 130 | } |
131 | |||
14 | daniel-mar | 132 | // Admin authentication functions |
2 | daniel-mar | 133 | |
134 | public static function adminLogin() { |
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42 | daniel-mar | 135 | $ses = OIDplus::sesHandler(); |
2 | daniel-mar | 136 | $ses->setValue('oidplus_admin_logged_in', '1'); |
137 | } |
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138 | |||
139 | public static function adminLogout() { |
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42 | daniel-mar | 140 | $ses = OIDplus::sesHandler(); |
85 | daniel-mar | 141 | $ses->setValue('oidplus_admin_logged_in', '0'); |
142 | |||
143 | if (self::raNumLoggedIn() == 0) { |
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144 | // Nobody logged in anymore. Destroy session cookie to make GDPR people happy |
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145 | $ses->destroySession(); |
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146 | } |
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2 | daniel-mar | 147 | } |
148 | |||
149 | public static function adminCheckPassword($password) { |
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421 | daniel-mar | 150 | $passwordData = OIDplus::baseConfig()->getValue('ADMIN_PASSWORD', ''); |
151 | if (empty($passwordData)) { |
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360 | daniel-mar | 152 | throw new OIDplusException(_L('No admin password set in %1','userdata/baseconfig/config.inc.php')); |
261 | daniel-mar | 153 | } |
456 | daniel-mar | 154 | |
421 | daniel-mar | 155 | if (strpos($passwordData, '$') !== false) { |
456 | daniel-mar | 156 | if ($passwordData[0] == '$') { |
157 | // Version 3: BCrypt |
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158 | return password_verify($password, $passwordData); |
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159 | } else { |
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457 | daniel-mar | 160 | // Version 2: SHA3-512 with salt |
456 | daniel-mar | 161 | list($s_salt, $hash) = explode('$', $passwordData, 2); |
162 | } |
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421 | daniel-mar | 163 | } else { |
456 | daniel-mar | 164 | // Version 1: SHA3-512 without salt |
421 | daniel-mar | 165 | $s_salt = ''; |
166 | $hash = $passwordData; |
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167 | } |
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168 | return strcmp(sha3_512($s_salt.$password, true), base64_decode($hash)) === 0; |
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2 | daniel-mar | 169 | } |
170 | |||
171 | public static function isAdminLoggedIn() { |
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329 | daniel-mar | 172 | if (self::forceAllLoggedOut()) { |
282 | daniel-mar | 173 | return false; |
174 | } |
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42 | daniel-mar | 175 | $ses = OIDplus::sesHandler(); |
2 | daniel-mar | 176 | return $ses->getValue('oidplus_admin_logged_in') == '1'; |
177 | } |
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178 | |||
310 | daniel-mar | 179 | // Authentication keys for validating arguments (e.g. sent by mail) |
2 | daniel-mar | 180 | |
181 | public static function makeAuthKey($data) { |
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424 | daniel-mar | 182 | $data = OIDplus::baseConfig()->getValue('SERVER_SECRET') . '/AUTHKEY/' . $data; |
421 | daniel-mar | 183 | $calc_authkey = sha3_512($data, false); |
2 | daniel-mar | 184 | return $calc_authkey; |
185 | } |
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186 | |||
187 | public static function validateAuthKey($data, $auth_key) { |
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421 | daniel-mar | 188 | return strcmp(self::makeAuthKey($data), $auth_key) === 0; |
2 | daniel-mar | 189 | } |
190 | |||
329 | daniel-mar | 191 | // "Veto" functions to force logout state |
192 | |||
193 | public static function forceAllLoggedOut() { |
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194 | if (isset($_SERVER['SCRIPT_FILENAME']) && (basename($_SERVER['SCRIPT_FILENAME']) == 'sitemap.php')) { |
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195 | // The sitemap may not contain any confidential information, |
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196 | // even if the user is logged in, because the admin could |
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197 | // accidentally copy-paste the sitemap to a |
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198 | // search engine control panel while they are logged in |
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199 | return true; |
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200 | } else { |
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201 | return false; |
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202 | } |
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203 | } |
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427 | daniel-mar | 204 | |
424 | daniel-mar | 205 | // CSRF functions |
427 | daniel-mar | 206 | |
424 | daniel-mar | 207 | private $enable_csrf = true; |
427 | daniel-mar | 208 | |
424 | daniel-mar | 209 | public function enableCSRF() { |
210 | $this->enable_csrf = true; |
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211 | } |
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427 | daniel-mar | 212 | |
424 | daniel-mar | 213 | public function disableCSRF() { |
214 | $this->enable_csrf = false; |
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215 | } |
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427 | daniel-mar | 216 | |
424 | daniel-mar | 217 | public function genCSRFToken() { |
457 | daniel-mar | 218 | return bin2hex(OIDplusAuthUtils::getRandomBytes(64)); |
424 | daniel-mar | 219 | } |
427 | daniel-mar | 220 | |
424 | daniel-mar | 221 | public function checkCSRF() { |
427 | daniel-mar | 222 | if (!$this->enable_csrf) return; |
424 | daniel-mar | 223 | if (!isset($_REQUEST['csrf_token']) || !isset($_COOKIE['csrf_token']) || ($_REQUEST['csrf_token'] != $_COOKIE['csrf_token'])) { |
224 | throw new Exception(_L('Wrong CSRF Token')); |
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225 | } |
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226 | } |
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329 | daniel-mar | 227 | |
421 | daniel-mar | 228 | // Generate RA passwords |
229 | |||
461 | daniel-mar | 230 | public static function raGeneratePassword($password): OIDplusRAAuthInfo { |
453 | daniel-mar | 231 | $def_method = OIDplus::config()->getValue('default_ra_auth_method'); |
232 | |||
233 | $plugins = OIDplus::getAuthPlugins(); |
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234 | foreach ($plugins as $plugin) { |
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235 | if (basename($plugin->getPluginDirectory()) === $def_method) { |
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236 | return $plugin->generate($password); |
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237 | } |
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238 | } |
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239 | throw new OIDplusException(_L('Default RA auth method/plugin "%1" not found',$def_method)); |
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421 | daniel-mar | 240 | } |
241 | |||
242 | // Generate admin password |
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243 | |||
244 | /* Nothing here; the admin password will be generated in setup_base.js */ |
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245 | |||
246 | } |