1 files changed, 256 insertions, 0 deletions

diff --git a/vendor/web-token/jwt-key-mgmt/KeyConverter/KeyConverter.php b/vendor/web-token/jwt-key-mgmt/KeyConverter/KeyConverter.php
new file mode 100644
index 0000000..17a5428
--- /dev/null
+++ b/vendor/web-token/jwt-key-mgmt/KeyConverter/KeyConverter.php
@@ -0,0 +1,256 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2014-2018 Spomky-Labs
+ *
+ * This software may be modified and distributed under the terms
+ * of the MIT license.  See the LICENSE file for details.
+ */
+
+namespace Jose\Component\KeyManagement\KeyConverter;
+
+use Base64Url\Base64Url;
+
+/**
+ * @internal
+ */
+class KeyConverter
+{
+    /**
+     * @throws \InvalidArgumentException
+     */
+    public static function loadKeyFromCertificateFile(string $file): array
+    {
+        if (!\file_exists($file)) {
+            throw new \InvalidArgumentException(\sprintf('File "%s" does not exist.', $file));
+        }
+        $content = \file_get_contents($file);
+
+        return self::loadKeyFromCertificate($content);
+    }
+
+    /**
+     * @throws \InvalidArgumentException
+     */
+    public static function loadKeyFromCertificate(string $certificate): array
+    {
+        try {
+            $res = \openssl_x509_read($certificate);
+        } catch (\Exception $e) {
+            $certificate = self::convertDerToPem($certificate);
+            $res = \openssl_x509_read($certificate);
+        }
+        if (false === $res) {
+            throw new \InvalidArgumentException('Unable to load the certificate.');
+        }
+
+        $values = self::loadKeyFromX509Resource($res);
+        \openssl_x509_free($res);
+
+        return $values;
+    }
+
+    /**
+     * @param resource $res
+     *
+     * @throws \Exception
+     */
+    public static function loadKeyFromX509Resource($res): array
+    {
+        $key = \openssl_get_publickey($res);
+
+        $details = \openssl_pkey_get_details($key);
+        if (isset($details['key'])) {
+            $values = self::loadKeyFromPEM($details['key']);
+            \openssl_x509_export($res, $out);
+            $x5c = \preg_replace('#-.*-#', '', $out);
+            $x5c = \preg_replace('~\R~', PHP_EOL, $x5c);
+            $x5c = \trim($x5c);
+            $values['x5c'] = [$x5c];
+
+            $values['x5t'] = Base64Url::encode(\openssl_x509_fingerprint($res, 'sha1', true));
+            $values['x5t#256'] = Base64Url::encode(\openssl_x509_fingerprint($res, 'sha256', true));
+
+            return $values;
+        }
+
+        throw new \InvalidArgumentException('Unable to load the certificate');
+    }
+
+    /**
+     * @throws \Exception
+     */
+    public static function loadFromKeyFile(string $file, ?string $password = null): array
+    {
+        $content = \file_get_contents($file);
+
+        return self::loadFromKey($content, $password);
+    }
+
+    /**
+     * @throws \Exception
+     */
+    public static function loadFromKey(string $key, ?string $password = null): array
+    {
+        try {
+            return self::loadKeyFromDER($key, $password);
+        } catch (\Exception $e) {
+            return self::loadKeyFromPEM($key, $password);
+        }
+    }
+
+    /**
+     * @throws \Exception
+     */
+    private static function loadKeyFromDER(string $der, ?string $password = null): array
+    {
+        $pem = self::convertDerToPem($der);
+
+        return self::loadKeyFromPEM($pem, $password);
+    }
+
+    /**
+     * @throws \Exception
+     */
+    private static function loadKeyFromPEM(string $pem, ?string $password = null): array
+    {
+        if (\preg_match('#DEK-Info: (.+),(.+)#', $pem, $matches)) {
+            $pem = self::decodePem($pem, $matches, $password);
+        }
+
+        self::sanitizePEM($pem);
+
+        $res = \openssl_pkey_get_private($pem);
+        if (false === $res) {
+            $res = \openssl_pkey_get_public($pem);
+        }
+        if (false === $res) {
+            throw new \InvalidArgumentException('Unable to load the key.');
+        }
+
+        $details = \openssl_pkey_get_details($res);
+        if (!\is_array($details) || !\array_key_exists('type', $details)) {
+            throw new \InvalidArgumentException('Unable to get details of the key');
+        }
+
+        switch ($details['type']) {
+            case OPENSSL_KEYTYPE_EC:
+                $ec_key = ECKey::createFromPEM($pem);
+
+                return $ec_key->toArray();
+            case OPENSSL_KEYTYPE_RSA:
+                 $rsa_key = RSAKey::createFromPEM($pem);
+                $rsa_key->optimize();
+
+                 return $rsa_key->toArray();
+            default:
+                throw new \InvalidArgumentException('Unsupported key type');
+        }
+    }
+
+    /**
+     * This method modifies the PEM to get 64 char lines and fix bug with old OpenSSL versions.
+     */
+    private static function sanitizePEM(string &$pem)
+    {
+        \preg_match_all('#(-.*-)#', $pem, $matches, PREG_PATTERN_ORDER);
+        $ciphertext = \preg_replace('#-.*-|\r|\n| #', '', $pem);
+
+        $pem = $matches[0][0].PHP_EOL;
+        $pem .= \chunk_split($ciphertext, 64, PHP_EOL);
+        $pem .= $matches[0][1].PHP_EOL;
+    }
+
+    /**
+     * Be careful! The certificate chain is loaded, but it is NOT VERIFIED by any mean!
+     * It is mandatory to verify the root CA or intermediate  CA are trusted.
+     * If not done, it may lead to potential security issues.
+     */
+    public static function loadFromX5C(array $x5c): array
+    {
+        $certificate = null;
+        $last_issuer = null;
+        $last_subject = null;
+        foreach ($x5c as $cert) {
+            $current_cert = '-----BEGIN CERTIFICATE-----'.PHP_EOL.\chunk_split($cert,64,PHP_EOL).'-----END CERTIFICATE-----';
+            $x509 = \openssl_x509_read($current_cert);
+            if (false === $x509) {
+                $last_issuer = null;
+                $last_subject = null;
+
+                break;
+            }
+            $parsed = \openssl_x509_parse($x509);
+
+            \openssl_x509_free($x509);
+            if (false === $parsed) {
+                $last_issuer = null;
+                $last_subject = null;
+
+                break;
+            }
+            if (null === $last_subject) {
+                $last_subject = $parsed['subject'];
+                $last_issuer = $parsed['issuer'];
+                $certificate = $current_cert;
+            } else {
+                if (\json_encode($last_issuer) === \json_encode($parsed['subject'])) {
+                    $last_subject = $parsed['subject'];
+                    $last_issuer = $parsed['issuer'];
+                } else {
+                    $last_issuer = null;
+                    $last_subject = null;
+
+                    break;
+                }
+            }
+        }
+
+        return self::loadKeyFromCertificate($certificate);
+    }
+
+    /**
+     * @param string[] $matches
+     */
+    private static function decodePem(string $pem, array $matches, ?string $password = null): string
+    {
+        if (null === $password) {
+            throw new \InvalidArgumentException('Password required for encrypted keys.');
+        }
+
+        $iv = \pack('H*', \trim($matches[2]));
+        $iv_sub = \mb_substr($iv, 0, 8, '8bit');
+        $symkey = \pack('H*', \md5($password.$iv_sub));
+        $symkey .= \pack('H*', \md5($symkey.$password.$iv_sub));
+        $key = \preg_replace('#^(?:Proc-Type|DEK-Info): .*#m', '', $pem);
+        $ciphertext = \base64_decode(\preg_replace('#-.*-|\r|\n#', '', $key), true);
+
+        $decoded = \openssl_decrypt($ciphertext, \mb_strtolower($matches[1]), $symkey, OPENSSL_RAW_DATA, $iv);
+        if (!\is_string($decoded)) {
+            throw new \InvalidArgumentException('Incorrect password. Key decryption failed.');
+        }
+
+        $number = \preg_match_all('#-{5}.*-{5}#', $pem, $result);
+        if (2 !== $number) {
+            throw new \InvalidArgumentException('Unable to load the key');
+        }
+
+        $pem = $result[0][0].PHP_EOL;
+        $pem .= \chunk_split(\base64_encode($decoded), 64);
+        $pem .= $result[0][1].PHP_EOL;
+
+        return $pem;
+    }
+
+    private static function convertDerToPem(string $der_data): string
+    {
+        $pem = \chunk_split(\base64_encode($der_data), 64, PHP_EOL);
+        $pem = '-----BEGIN CERTIFICATE-----'.PHP_EOL.$pem.'-----END CERTIFICATE-----'.PHP_EOL;
+
+        return $pem;
+    }
+}