fix(stores): encode reserved path characters in win32 envs

lib/stores/filesystem.js

@@ -14,6 +14,23 @@ const { concatStreams, walk } = require("../utils");
 const S3RVER_SUFFIX = "%s._S3rver_%s";
 
 class FilesystemStore {
+  static decodeKeyPath(keyPath) {
+    return process.platform === "win32"
+      ? keyPath.replace(/&../g, ent =>
+          Buffer.from(ent.slice(1), "hex").toString()
+        )
+      : keyPath;
+  }
+
+  static encodeKeyPath(key) {
+    return process.platform === "win32"
+      ? key.replace(
+          /[<>:"\\|?*]/g,
+          ch => "&" + Buffer.from(ch, "utf8").toString("hex")
+        )
+      : key;
+  }
+
   constructor(rootDirectory) {
     this.rootDirectory = rootDirectory;
   }
@@ -25,7 +42,7 @@ class FilesystemStore {
   }
 
   getResourcePath(bucket, key = "", resource) {
-    const parts = key.split("/");
+    const parts = FilesystemStore.encodeKeyPath(key).split("/");
     const suffix = format(S3RVER_SUFFIX, parts.pop(), resource);
     return path.join(this.rootDirectory, bucket, ...parts, suffix);
   }
@@ -128,7 +145,10 @@ class FilesystemStore {
     const objectSuffix = format(S3RVER_SUFFIX, "", "object");
     let keys = [...walk(bucketPath)]
       .filter(file => file.endsWith(objectSuffix))
-      .map(key => key.slice(bucketPath.length + 1, -objectSuffix.length));
+      .map(keyPath =>
+        keyPath.slice(bucketPath.length + 1, -objectSuffix.length)
+      )
+      .map(FilesystemStore.decodeKeyPath);
 
     if (!keys.length) {
       return {