first commit

libraries/vendor/web-token/jwt-signature/JWSTokenSupport.php

@@ -0,0 +1,36 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Jose\Component\Signature;
+
+use InvalidArgumentException;
+use Jose\Component\Checker\TokenTypeSupport;
+use Jose\Component\Core\JWT;
+
+final class JWSTokenSupport implements TokenTypeSupport
+{
+    public function supports(JWT $jwt): bool
+    {
+        return $jwt instanceof JWS;
+    }
+
+    /**
+     * @param array<string, mixed> $protectedHeader
+     * @param array<string, mixed> $unprotectedHeader
+     */
+    public function retrieveTokenHeaders(JWT $jwt, int $index, array &$protectedHeader, array &$unprotectedHeader): void
+    {
+        if (! $jwt instanceof JWS) {
+            return;
+        }
+
+        if ($index > $jwt->countSignatures()) {
+            throw new InvalidArgumentException('Unknown signature index.');
+        }
+        $protectedHeader = $jwt->getSignature($index)
+            ->getProtectedHeader();
+        $unprotectedHeader = $jwt->getSignature($index)
+            ->getHeader();
+    }
+}