/**
* {@inheritdoc}
*/
public function generate(KeyPair $keyPair, array $domains)
{
if (!($privateKey = openssl_pkey_get_private($keyPair->getPrivate()))) {
// TODO: Improve error message
throw new AcmeException("Couldn't use private key.");
}
$san = implode(",", array_map(function ($dns) {
return "DNS:{$dns}";
}, $domains));
// http://www.heise.de/netze/rfc/rfcs/rfc7633.shtml
// http://www.heise.de/netze/rfc/rfcs/rfc6066.shtml
$mustStaple = $this->mustStaple ? "tlsfeature = status_request" : "";
$tempFile = tempnam(sys_get_temp_dir(), "acme-openssl-config-");
$tempConf = <<<EOL
[ req ]
distinguished_name = req_distinguished_name
req_extensions = v3_req
{$mustStaple}
[ req_distinguished_name ]
[ v3_req ]
basicConstraints = CA:FALSE
keyUsage = digitalSignature, nonRepudiation
subjectAltName = {$san}
EOL;
(yield \Amp\File\put($tempFile, $tempConf));
$csr = openssl_csr_new(["CN" => reset($domains)], $privateKey, ["digest_alg" => "sha256", "config" => $tempFile]);
(yield \Amp\File\unlink($tempFile));
if (!$csr) {
// TODO: Improve error message
throw new AcmeException("CSR could not be generated.");
}
(yield new CoroutineResult(openssl_csr_export($csr, $csr)));
}
private function doPut($token, $payload, $user = null)
{
Assert::string($token, "Token must be a string. Got: %s");
Assert::string($payload, "Payload must be a string. Got: %s");
Assert::nullOrString($user, "User must be a string or null. Got: %s");
$path = $this->docroot . "/.well-known/acme-challenge";
$realpath = realpath($path);
if (!realpath($this->docroot)) {
throw new ChallengeStoreException("Document root doesn't exist: '{$this->docroot}'");
}
if (!$realpath && !@mkdir($path, 0755, true)) {
throw new ChallengeStoreException("Couldn't create public directory to serve the challenges: '{$path}'");
}
if ($user) {
if (!($userInfo = posix_getpwnam($user))) {
throw new ChallengeStoreException("Unknown user: '******'");
}
}
if (isset($userInfo)) {
(yield \Amp\File\chown($this->docroot . "/.well-known", $userInfo["uid"], -1));
(yield \Amp\File\chown($this->docroot . "/.well-known/acme-challenge", $userInfo["uid"], -1));
}
(yield \Amp\File\put("{$path}/{$token}", $payload));
if (isset($userInfo)) {
(yield \Amp\File\chown("{$path}/{$token}", $userInfo["uid"], -1));
}
(yield \Amp\File\chmod("{$path}/{$token}", 0644));
}
private function doPut(array $certificates)
{
if (empty($certificates)) {
throw new InvalidArgumentException("Empty array not allowed");
}
$cert = new Certificate($certificates[0]);
$commonName = $cert->getSubject()->getCommonName();
if (!$commonName) {
throw new CertificateStoreException("Certificate doesn't have a common name.");
}
// See https://github.com/amphp/dns/blob/4c4d450d4af26fc55dc56dcf45ec7977373a38bf/lib/functions.php#L83
if (isset($commonName[253]) || !preg_match("~^(?:[a-z0-9](?:[a-z0-9-]{0,61}[a-z0-9]){0,1})(?:\\.[a-z0-9][a-z0-9-]{0,61}[a-z0-9])*\$~i", $commonName)) {
throw new CertificateStoreException("Invalid common name: '{$commonName}'");
}
try {
$chain = array_slice($certificates, 1);
$path = $this->root . "/" . $commonName;
$realpath = realpath($path);
if (!$realpath && !mkdir($path, 0775, true)) {
throw new FilesystemException("Couldn't create certificate directory: '{$path}'");
}
(yield \Amp\File\put($path . "/cert.pem", $certificates[0]));
(yield \Amp\File\chmod($path . "/cert.pem", 0644));
(yield \Amp\File\put($path . "/fullchain.pem", implode("\n", $certificates)));
(yield \Amp\File\chmod($path . "/fullchain.pem", 0644));
(yield \Amp\File\put($path . "/chain.pem", implode("\n", $chain)));
(yield \Amp\File\chmod($path . "/chain.pem", 0644));
} catch (FilesystemException $e) {
throw new CertificateStoreException("Couldn't save certificates for '{$commonName}'", 0, $e);
}
}
private function doPut($path, KeyPair $keyPair)
{
if (!is_string($path)) {
throw new InvalidArgumentException(sprintf("\$root must be of type string, %s given.", gettype($path)));
}
$file = $this->root . "/" . $path;
try {
// TODO: Replace with async version once available
if (!file_exists(dirname($file))) {
$success = mkdir(dirname($file), 0755, true);
if (!$success) {
throw new KeyStoreException("Could not create key store directory.");
}
}
(yield \Amp\File\put($file, $keyPair->getPrivate()));
(yield \Amp\File\chmod($file, 0600));
} catch (FilesystemException $e) {
throw new KeyStoreException("Could not save key.", 0, $e);
}
(yield new CoroutineResult($keyPair));
}
private function doRequestCertificate(KeyPair $keyPair, array $domains)
{
if (empty($domains)) {
throw new AcmeException("Parameter \$domains must not be empty.");
}
if (!($privateKey = openssl_pkey_get_private($keyPair->getPrivate()))) {
// TODO: Improve error message
throw new AcmeException("Couldn't use private key.");
}
$tempFile = tempnam(sys_get_temp_dir(), "acme_openssl_config_");
$tempConf = <<<EOL
[ req ]
distinguished_name = req_distinguished_name
req_extensions = v3_req
[ req_distinguished_name ]
[ v3_req ]
basicConstraints = CA:FALSE
keyUsage = nonRepudiation, digitalSignature, keyEncipherment
subjectAltName = @san
[ san ]
EOL;
$i = 0;
$san = implode("\n", array_map(function ($dns) use(&$i) {
$i++;
return "DNS.{$i} = {$dns}";
}, $domains));
(yield \Amp\File\put($tempFile, $tempConf . "\n" . $san . "\n"));
$csr = openssl_csr_new(["CN" => reset($domains), "ST" => "Germany", "C" => "DE", "O" => "Unknown"], $privateKey, ["digest_alg" => "sha256", "req_extensions" => "v3_req", "config" => $tempFile]);
(yield \Amp\File\unlink($tempFile));
if (!$csr) {
// TODO: Improve error message
throw new AcmeException("CSR could not be generated.");
}
openssl_csr_export($csr, $csr);
$begin = "REQUEST-----";
$end = "----END";
$csr = substr($csr, strpos($csr, $begin) + strlen($begin));
$csr = substr($csr, 0, strpos($csr, $end));
$enc = new Base64UrlSafeEncoder();
/** @var Response $response */
$response = (yield $this->acmeClient->post(AcmeResource::NEW_CERTIFICATE, ["csr" => $enc->encode(base64_decode($csr))]));
if ($response->getStatus() === 201) {
if (!$response->hasHeader("location")) {
throw new AcmeException("Protocol Violation: No Location Header");
}
(yield new CoroutineResult(current($response->getHeader("location"))));
return;
}
throw $this->generateException($response);
}
