first commit

libraries/vendor/web-auth/metadata-service/src/Service/FolderResourceMetadataService.php

@@ -0,0 +1,61 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Webauthn\MetadataService\Service;
+
+use const DIRECTORY_SEPARATOR;
+use function file_get_contents;
+use InvalidArgumentException;
+use function is_array;
+use RuntimeException;
+use function sprintf;
+use Webauthn\MetadataService\Statement\MetadataStatement;
+
+final class FolderResourceMetadataService implements MetadataService
+{
+    private readonly string $rootPath;
+
+    public function __construct(string $rootPath)
+    {
+        $this->rootPath = rtrim($rootPath, DIRECTORY_SEPARATOR);
+        is_dir($this->rootPath) || throw new InvalidArgumentException('The given parameter is not a valid folder.');
+        is_readable($this->rootPath) || throw new InvalidArgumentException(
+            'The given parameter is not a valid folder.'
+        );
+    }
+
+    public function list(): iterable
+    {
+        $files = glob($this->rootPath . DIRECTORY_SEPARATOR . '*');
+        is_array($files) || throw new RuntimeException('Unable to read files.');
+        foreach ($files as $file) {
+            if (is_dir($file) || ! is_readable($file)) {
+                continue;
+            }
+
+            yield basename($file);
+        }
+    }
+
+    public function has(string $aaguid): bool
+    {
+        $filename = $this->rootPath . DIRECTORY_SEPARATOR . $aaguid;
+
+        return is_file($filename) && is_readable($filename);
+    }
+
+    public function get(string $aaguid): MetadataStatement
+    {
+        $this->has($aaguid) || throw new InvalidArgumentException(sprintf(
+            'The MDS with the AAGUID "%s" does not exist.',
+            $aaguid
+        ));
+        $filename = $this->rootPath . DIRECTORY_SEPARATOR . $aaguid;
+        $data = trim(file_get_contents($filename));
+        $mds = MetadataStatement::createFromString($data);
+        $mds->getAaguid() !== null || throw new RuntimeException('Invalid Metadata Statement.');
+
+        return $mds;
+    }
+}