primo commit

libraries/vendor/web-token/jwt-library/Encryption/Compression/Deflate.php

@@ -0,0 +1,65 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Jose\Component\Encryption\Compression;
+
+use InvalidArgumentException;
+use Throwable;
+use function is_string;
+
+/**
+ * @deprecated This class is deprecated and will be removed in v4.0. Compression is not recommended for JWE.
+ */
+final class Deflate implements CompressionMethod
+{
+    private int $compressionLevel = -1;
+
+    public function __construct(int $compressionLevel = -1)
+    {
+        if ($compressionLevel < -1 || $compressionLevel > 9) {
+            throw new InvalidArgumentException(
+                'The compression level can be given as 0 for no compression up to 9 for maximum compression. If -1 given, the default compression level will be the default compression level of the zlib library.'
+            );
+        }
+        $this->compressionLevel = $compressionLevel;
+    }
+
+    public function name(): string
+    {
+        return 'DEF';
+    }
+
+    public function compress(string $data): string
+    {
+        try {
+            $bin = gzdeflate($data, $this->getCompressionLevel());
+            if (! is_string($bin)) {
+                throw new InvalidArgumentException('Unable to encode the data');
+            }
+
+            return $bin;
+        } catch (Throwable $throwable) {
+            throw new InvalidArgumentException('Unable to compress data.', $throwable->getCode(), $throwable);
+        }
+    }
+
+    public function uncompress(string $data): string
+    {
+        try {
+            $bin = gzinflate($data);
+            if (! is_string($bin)) {
+                throw new InvalidArgumentException('Unable to encode the data');
+            }
+
+            return $bin;
+        } catch (Throwable $throwable) {
+            throw new InvalidArgumentException('Unable to uncompress data.', $throwable->getCode(), $throwable);
+        }
+    }
+
+    private function getCompressionLevel(): int
+    {
+        return $this->compressionLevel;
+    }
+}