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| 1 | <?php |
| 2 | |
| 3 | declare(strict_types=1); |
| 4 | /** |
| 5 | * SPDX-FileCopyrightText: 2020-2024 LibreCode coop and contributors |
| 6 | * SPDX-License-Identifier: AGPL-3.0-or-later |
| 7 | */ |
| 8 | |
| 9 | namespace OCA\Libresign\Handler; |
| 10 | |
| 11 | use Closure; |
| 12 | use OCA\Libresign\Exception\LibresignException; |
| 13 | use OCA\Libresign\Service\CertificatePolicyService; |
| 14 | |
| 15 | class CfsslServerHandler { |
| 16 | private string $csrServerFile = ''; |
| 17 | private string $configServerFile = ''; |
| 18 | private string $configServerFileHash = ''; |
| 19 | private string $crlUrl = ''; |
| 20 | private Closure $getCurrentConfigPath; |
| 21 | |
| 22 | public function __construct( |
| 23 | private CertificatePolicyService $certificatePolicyService, |
| 24 | ) { |
| 25 | } |
| 26 | |
| 27 | /** |
| 28 | * Create a callback to get config path not at the constructor because |
| 29 | * getting at constructor, every time that the class is instantiated, will |
| 30 | * try to create the config path if not exists. |
| 31 | */ |
| 32 | public function configCallback(Closure $callback): void { |
| 33 | $this->getCurrentConfigPath = $callback; |
| 34 | $this->getCurrentConfigPath = function () use ($callback): void { |
| 35 | if ($this->csrServerFile) { |
| 36 | return; |
| 37 | } |
| 38 | $configPath = $callback(); |
| 39 | $this->csrServerFile = $configPath . DIRECTORY_SEPARATOR . 'csr_server.json'; |
| 40 | $this->configServerFile = $configPath . DIRECTORY_SEPARATOR . 'config_server.json'; |
| 41 | $this->configServerFileHash = $configPath . DIRECTORY_SEPARATOR . 'hashes.sha256'; |
| 42 | }; |
| 43 | } |
| 44 | |
| 45 | public function createConfigServer( |
| 46 | string $commonName, |
| 47 | array $names, |
| 48 | int $expirityInDays, |
| 49 | string $crlUrl = '', |
| 50 | ): void { |
| 51 | $this->crlUrl = $crlUrl; |
| 52 | $this->putCsrServer( |
| 53 | $commonName, |
| 54 | $names, |
| 55 | $expirityInDays, |
| 56 | $crlUrl, |
| 57 | ); |
| 58 | $this->saveNewConfig($expirityInDays); |
| 59 | } |
| 60 | |
| 61 | private function putCsrServer( |
| 62 | string $commonName, |
| 63 | array $names, |
| 64 | int $expirityInDays, |
| 65 | string $crlUrl, |
| 66 | ): void { |
| 67 | $content = [ |
| 68 | 'CN' => $commonName, |
| 69 | 'key' => [ |
| 70 | 'algo' => 'rsa', |
| 71 | 'size' => 2048, |
| 72 | ], |
| 73 | 'ca' => [ |
| 74 | 'expiry' => ($expirityInDays * 24) . 'h', |
| 75 | /** |
| 76 | * Look the RFC about pathlen constraint |
| 77 | * |
| 78 | * @link https://www.rfc-editor.org/rfc/rfc5280#section-4.2.1.9 |
| 79 | */ |
| 80 | 'pathlen' => 1, |
| 81 | ], |
| 82 | 'names' => [], |
| 83 | ]; |
| 84 | if (!empty($crlUrl)) { |
| 85 | $content['crl_url'] = $crlUrl; |
| 86 | } |
| 87 | foreach ($names as $id => $name) { |
| 88 | $content['names'][0][$id] = is_array($name['value']) ? implode(', ', $name['value']) : $name['value']; |
| 89 | } |
| 90 | ($this->getCurrentConfigPath)(); |
| 91 | $response = file_put_contents($this->csrServerFile, json_encode($content)); |
| 92 | if ($response === false) { |
| 93 | throw new LibresignException( |
| 94 | "Error while writing CSR server file.\n" |
| 95 | . 'Remove the CFSSL API URI and Config path to use the default values.', |
| 96 | 500 |
| 97 | ); |
| 98 | } |
| 99 | } |
| 100 | private function saveNewConfig(int $expirity): void { |
| 101 | $config = [ |
| 102 | 'signing' => [ |
| 103 | 'profiles' => [ |
| 104 | 'client' => [ |
| 105 | 'expiry' => ($expirity * 24) . 'h', |
| 106 | 'usages' => [ |
| 107 | 'signing', |
| 108 | 'digital signature', |
| 109 | 'content commitment', |
| 110 | 'key encipherment', |
| 111 | 'client auth', |
| 112 | 'email protection' |
| 113 | ], |
| 114 | 'ca_constraint' => [ |
| 115 | 'is_ca' => false |
| 116 | ], |
| 117 | ], |
| 118 | ], |
| 119 | ], |
| 120 | ]; |
| 121 | |
| 122 | if (!empty($this->crlUrl)) { |
| 123 | $config['signing']['profiles']['client']['crl_url'] = $this->crlUrl; |
| 124 | } |
| 125 | |
| 126 | $oid = $this->certificatePolicyService->getOid(); |
| 127 | $cps = $this->certificatePolicyService->getCps(); |
| 128 | if ($oid && $cps) { |
| 129 | $config['signing']['profiles']['client']['policies'][] = [ |
| 130 | 'id' => $oid, |
| 131 | 'qualifiers' => [ |
| 132 | [ |
| 133 | 'type' => 'id-qt-cps', |
| 134 | 'value' => $cps, |
| 135 | ], |
| 136 | ], |
| 137 | ]; |
| 138 | } |
| 139 | $this->saveConfig($config); |
| 140 | } |
| 141 | |
| 142 | private function saveConfig(array $config): void { |
| 143 | $jsonConfig = json_encode($config); |
| 144 | ($this->getCurrentConfigPath)(); |
| 145 | $response = file_put_contents($this->configServerFile, $jsonConfig); |
| 146 | if ($response === false) { |
| 147 | throw new LibresignException('Error while writing config server file!', 500); |
| 148 | } |
| 149 | $hash = hash('sha256', $jsonConfig) . ' config_server.json'; |
| 150 | file_put_contents($this->configServerFileHash, $hash); |
| 151 | } |
| 152 | |
| 153 | public function updateExpirity(int $expirity): void { |
| 154 | ($this->getCurrentConfigPath)(); |
| 155 | if (file_exists($this->configServerFileHash)) { |
| 156 | $hashes = file_get_contents($this->configServerFileHash); |
| 157 | preg_match('/(?<hash>\w*) +config_server.json/', $hashes, $matches); |
| 158 | $savedHash = $matches['hash']; |
| 159 | } else { |
| 160 | $savedHash = ''; |
| 161 | } |
| 162 | $jsonConfig = file_get_contents($this->configServerFile); |
| 163 | $currentHash = hash('sha256', $jsonConfig); |
| 164 | if ($currentHash === $savedHash) { |
| 165 | return; |
| 166 | } |
| 167 | $config = json_decode($jsonConfig, true); |
| 168 | $config['signing']['profiles']['CA']['expiry'] = ($expirity * 24) . 'h'; |
| 169 | $config['signing']['profiles']['client']['expiry'] = ($expirity * 24) . 'h'; |
| 170 | $this->saveConfig($config); |
| 171 | } |
| 172 | } |