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<?php |
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namespace Rogierw\RwAcme\Support; |
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use OpenSSLAsymmetricKey; |
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use Rogierw\RwAcme\Exceptions\LetsEncryptClientException; |
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class OpenSsl |
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{ |
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public static function generatePrivateKey(): OpenSSLAsymmetricKey |
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{ |
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return openssl_pkey_new([ |
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'private_key_bits' => 2048, |
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'digest_alg' => 'sha256', |
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]); |
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} |
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public static function openSslKeyToString(OpenSSLAsymmetricKey $key): string |
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{ |
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if (!openssl_pkey_export($key, $output)) { |
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throw new LetsEncryptClientException('Exporting SSL key failed.'); |
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} |
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return trim($output); |
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} |
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public static function generateCsr( |
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array $domains, |
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OpenSSLAsymmetricKey $privateKey, |
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bool $isAssociative = false |
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): string { |
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if ($isAssociative) { |
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$san = []; |
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self::extractKey($domains, $san, 'dns', 'DNS'); |
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self::extractKey($domains, $san, 'ip', 'IP Address'); |
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$san = implode(',', $san); |
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$dn = implode(',', array_map(function ($key, $value) { |
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return $key . ':' . $value; |
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}, $domains)); |
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} else { |
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$dn = ['commonName' => $domains[0]]; |
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$san = implode(',', array_map(function ($dns) { |
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return 'DNS:' . $dns; |
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}, $domains)); |
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} |
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$tempFile = tmpfile(); |
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fwrite( |
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$tempFile, |
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'HOME = . |
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RANDFILE = $ENV::HOME/.rnd |
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[ req ] |
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default_bits = 4096 |
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default_keyfile = privkey.pem |
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distinguished_name = req_distinguished_name |
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req_extensions = v3_req |
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[ req_distinguished_name ] |
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countryName = Country Name (2 letter code) |
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[ v3_req ] |
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basicConstraints = CA:FALSE |
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subjectAltName = ' . $san . ' |
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keyUsage = nonRepudiation, digitalSignature, keyEncipherment' |
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); |
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$csr = openssl_csr_new($dn, $privateKey, [ |
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'digest_alg' => 'sha256', |
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'config' => stream_get_meta_data($tempFile)['uri'], |
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]); |
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fclose($tempFile); |
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if (!openssl_csr_export($csr, $out)) { |
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throw new LetsEncryptClientException('Exporting CSR failed.'); |
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} |
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return trim($out); |
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} |
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public static function extractKey(array &$domains, array &$san, string $key, string $name): void |
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{ |
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if (!empty($domains[$key])) { |
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$san = array_merge($san, array_map(function ($ip) use ($name) { |
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return $name . ':' . $ip; |
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}, $domains[$key])); |
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unset($domains[$key]); |
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} |
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} |
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} |
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RogierW /
rw-acme-client
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