first commit

libraries/vendor/web-token/jwt-signature/Serializer/JSONFlattenedSerializer.php

@@ -0,0 +1,97 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Jose\Component\Signature\Serializer;
+
+use function count;
+use InvalidArgumentException;
+use function is_array;
+use Jose\Component\Core\Util\JsonConverter;
+use Jose\Component\Signature\JWS;
+use ParagonIE\ConstantTime\Base64UrlSafe;
+
+final class JSONFlattenedSerializer extends Serializer
+{
+    public const NAME = 'jws_json_flattened';
+
+    public function displayName(): string
+    {
+        return 'JWS JSON Flattened';
+    }
+
+    public function name(): string
+    {
+        return self::NAME;
+    }
+
+    public function serialize(JWS $jws, ?int $signatureIndex = null): string
+    {
+        if ($signatureIndex === null) {
+            $signatureIndex = 0;
+        }
+        $signature = $jws->getSignature($signatureIndex);
+
+        $data = [];
+        $encodedPayload = $jws->getEncodedPayload();
+        if ($encodedPayload !== null && $encodedPayload !== '') {
+            $data['payload'] = $encodedPayload;
+        }
+        $encodedProtectedHeader = $signature->getEncodedProtectedHeader();
+        if ($encodedProtectedHeader !== null && $encodedProtectedHeader !== '') {
+            $data['protected'] = $encodedProtectedHeader;
+        }
+        $header = $signature->getHeader();
+        if (count($header) !== 0) {
+            $data['header'] = $header;
+        }
+        $data['signature'] = Base64UrlSafe::encodeUnpadded($signature->getSignature());
+
+        return JsonConverter::encode($data);
+    }
+
+    public function unserialize(string $input): JWS
+    {
+        $data = JsonConverter::decode($input);
+        if (! is_array($data)) {
+            throw new InvalidArgumentException('Unsupported input.');
+        }
+        if (! isset($data['signature'])) {
+            throw new InvalidArgumentException('Unsupported input.');
+        }
+        $signature = Base64UrlSafe::decode($data['signature']);
+
+        if (isset($data['protected'])) {
+            $encodedProtectedHeader = $data['protected'];
+            $protectedHeader = JsonConverter::decode(Base64UrlSafe::decode($data['protected']));
+            if (! is_array($protectedHeader)) {
+                throw new InvalidArgumentException('Bad protected header.');
+            }
+        } else {
+            $encodedProtectedHeader = null;
+            $protectedHeader = [];
+        }
+        if (isset($data['header'])) {
+            if (! is_array($data['header'])) {
+                throw new InvalidArgumentException('Bad header.');
+            }
+            $header = $data['header'];
+        } else {
+            $header = [];
+        }
+
+        if (isset($data['payload'])) {
+            $encodedPayload = $data['payload'];
+            $payload = $this->isPayloadEncoded($protectedHeader) ? Base64UrlSafe::decode(
+                $encodedPayload
+            ) : $encodedPayload;
+        } else {
+            $payload = null;
+            $encodedPayload = null;
+        }
+
+        $jws = new JWS($payload, $encodedPayload, $encodedPayload === null);
+
+        return $jws->addSignature($signature, $protectedHeader, $encodedProtectedHeader, $header);
+    }
+}