1 files changed, 40 insertions, 0 deletions
diff --git a/cdn/src/util/FileStorage.ts b/cdn/src/util/FileStorage.ts
new file mode 100644
index 00000000..6e74788f
--- /dev/null
+++ b/cdn/src/util/FileStorage.ts
@@ -0,0 +1,40 @@
+import { Storage } from "./Storage";
+import fs from "fs";
+import fse from "fs-extra";
+import { join, relative, dirname } from "path";
+import "missing-native-js-functions";
+import { Readable } from "stream";
+import ExifTransformer = require("exif-be-gone");
+
+function getPath(path: string) {
+ // STORAGE_LOCATION has a default value in start.ts
+ const root = process.env.STORAGE_LOCATION || "../";
+ var filename = join(root, path);
+
+ if (path.indexOf("\0") !== -1 || !filename.startsWith(root)) throw new Error("invalid path");
+ return filename;
+}
+
+export class FileStorage implements Storage {
+ async get(path: string): Promise<Buffer | null> {
+ try {
+ return fs.readFileSync(getPath(path));
+ } catch (error) {
+ return null;
+ }
+ }
+
+ async set(path: string, value: any) {
+ path = getPath(path);
+ fse.ensureDirSync(dirname(path));
+
+ value = Readable.from(value);
+ const cleaned_file = fs.createWriteStream(path);
+
+ return value.pipe(new ExifTransformer()).pipe(cleaned_file);
+ }
+
+ async delete(path: string) {
+ fs.unlinkSync(getPath(path));
+ }
+}
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