installed plugin WP-WebAuthn version 1.2.8

wp-content/plugins/wp-webauthn/vendor/web-token/jwt-signature/Serializer/CompactSerializer.php

@@ -0,0 +1,96 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2014-2020 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\Signature\Serializer;
+
+use Base64Url\Base64Url;
+use function count;
+use InvalidArgumentException;
+use Jose\Component\Core\Util\JsonConverter;
+use Jose\Component\Signature\JWS;
+use LogicException;
+use Throwable;
+
+final class CompactSerializer extends Serializer
+{
+    public const NAME = 'jws_compact';
+
+    public function displayName(): string
+    {
+        return 'JWS Compact';
+    }
+
+    public function name(): string
+    {
+        return self::NAME;
+    }
+
+    /**
+     * @throws LogicException if the JWS has unprotected header (invalid for compact JSON)
+     * @throws LogicException if the payload is not encoded but contains unauthorized characters
+     */
+    public function serialize(JWS $jws, ?int $signatureIndex = null): string
+    {
+        if (null === $signatureIndex) {
+            $signatureIndex = 0;
+        }
+        $signature = $jws->getSignature($signatureIndex);
+        if (0 !== count($signature->getHeader())) {
+            throw new LogicException('The signature contains unprotected header parameters and cannot be converted into compact JSON.');
+        }
+        $isEmptyPayload = null === $jws->getEncodedPayload() || '' === $jws->getEncodedPayload();
+        if (!$this->isPayloadEncoded($signature->getProtectedHeader()) && !$isEmptyPayload) {
+            if (1 !== preg_match('/^[\x{20}-\x{2d}|\x{2f}-\x{7e}]*$/u', $jws->getPayload())) {
+                throw new LogicException('Unable to convert the JWS with non-encoded payload.');
+            }
+        }
+
+        return sprintf(
+            '%s.%s.%s',
+            $signature->getEncodedProtectedHeader(),
+            $jws->getEncodedPayload(),
+            Base64Url::encode($signature->getSignature())
+        );
+    }
+
+    /**
+     * @throws InvalidArgumentException if the input is invalid
+     */
+    public function unserialize(string $input): JWS
+    {
+        $parts = explode('.', $input);
+        if (3 !== count($parts)) {
+            throw new InvalidArgumentException('Unsupported input');
+        }
+
+        try {
+            $encodedProtectedHeader = $parts[0];
+            $protectedHeader = JsonConverter::decode(Base64Url::decode($parts[0]));
+            $hasPayload = '' !== $parts[1];
+            if (!$hasPayload) {
+                $payload = null;
+                $encodedPayload = null;
+            } else {
+                $encodedPayload = $parts[1];
+                $payload = $this->isPayloadEncoded($protectedHeader) ? Base64Url::decode($encodedPayload) : $encodedPayload;
+            }
+            $signature = Base64Url::decode($parts[2]);
+
+            $jws = new JWS($payload, $encodedPayload, !$hasPayload);
+
+            return $jws->addSignature($signature, $protectedHeader, $encodedProtectedHeader);
+        } catch (Throwable $throwable) {
+            throw new InvalidArgumentException('Unsupported input', $throwable->getCode(), $throwable);
+        }
+    }
+}