[9.x] Checksums for filesystem disks

composer.json

@@ -24,7 +24,7 @@
         "fruitcake/php-cors": "^1.2",
         "laravel/serializable-closure": "^1.2.2",
         "league/commonmark": "^2.2",
-        "league/flysystem": "^3.0.16",
+        "league/flysystem": "^3.8.0",
         "monolog/monolog": "^2.0",
         "nesbot/carbon": "^2.62.1",
         "nunomaduro/termwind": "^1.13",

src/Illuminate/Filesystem/FilesystemAdapter.php

@@ -24,6 +24,7 @@
 use League\Flysystem\UnableToDeleteDirectory;
 use League\Flysystem\UnableToDeleteFile;
 use League\Flysystem\UnableToMoveFile;
+use League\Flysystem\UnableToProvideChecksum;
 use League\Flysystem\UnableToReadFile;
 use League\Flysystem\UnableToRetrieveMetadata;
 use League\Flysystem\UnableToSetVisibility;
@@ -554,6 +555,24 @@ public function size($path)
         return $this->driver->fileSize($path);
     }
 
+    /**
+     * Get the checksum for a file.
+     *
+     * @return string|false
+     *
+     * @throws UnableToProvideChecksum
+     */
+    public function checksum(string $path, array $options = []): string|false
+    {
+        try {
+            return $this->driver->checksum($path, $options);
+        } catch (UnableToProvideChecksum $e) {
+            throw_if($this->throwsExceptions(), $e);
+
+            return false;
+        }
+    }
+
     /**
      * Get the mime-type of a given file.
      *

tests/Filesystem/FilesystemAdapterTest.php

@@ -571,4 +571,13 @@ public function testPrefixesUrls()
 
         $this->assertEquals('https://example.org/images/picture.jpeg', $filesystemAdapter->url('picture.jpeg'));
     }
+
+    public function testGetChecksum()
+    {
+        $filesystemAdapter = new FilesystemAdapter($this->filesystem, $this->adapter);
+        $filesystemAdapter->write('path.txt', 'contents of file');
+
+        $this->assertEquals('730bed78bccf58c2cfe44c29b71e5e6b', $filesystemAdapter->checksum('path.txt'));
+        $this->assertEquals('a5c3556d', $filesystemAdapter->checksum('path.txt', ['checksum_algo' => 'crc32']));
+    }
 }