From 941b54c3f89536e099fb07c75f83d450804e5dae Mon Sep 17 00:00:00 2001
From: yuanzonghao <yuanzonghao123@gmail.com>
Date: Thu, 18 Jun 2026 21:56:38 +0800
Subject: [PATCH] fix(share): require at least 1 byte of content in .infiplot
 files

Reject header-only files (37 bytes, empty plaintext) at the unpack
boundary instead of letting them through as empty strings.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
---
 lib/galleryCrypto.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/galleryCrypto.ts b/lib/galleryCrypto.ts
index cf650d6..c1e63b0 100644
--- a/lib/galleryCrypto.ts
+++ b/lib/galleryCrypto.ts
@@ -28,7 +28,7 @@ export async function packDoc(docStr: string): Promise<Uint8Array> {
 }
 
 export async function unpackDoc(blob: Uint8Array): Promise<string> {
-  if (blob.length < HEADER_LEN) {
+  if (blob.length < HEADER_LEN + 1) {
     throw new Error("文件太小,不是合法的分享文件");
   }
   for (let i = 0; i < MAGIC.length; i++) {