Harden file resume prefix validation

2026-07-11 17:59:41 -04:00
parent 4ea05fc14f
commit bfe75dfbd2
6 changed files with 264 additions and 68 deletions
@@ -46,13 +46,32 @@ pub enum FileRequest {
 #[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq)]
 pub enum FileResponse {
    Ok,
-    Resume { offset: u64 },
-    Stat { meta: FileMeta },
-    List { entries: Vec<FileEntry> },
-    Start { meta: FileMeta, offset: u64 },
-    Chunk { offset: u64, bytes: Vec<u8> },
-    Done { sha256: [u8; 32], bytes: u64 },
-    Error { message: String },
+    Resume {
+        offset: u64,
+        prefix_sha256: Option<[u8; 32]>,
+    },
+    Stat {
+        meta: FileMeta,
+    },
+    List {
+        entries: Vec<FileEntry>,
+    },
+    Start {
+        meta: FileMeta,
+        offset: u64,
+        prefix_sha256: Option<[u8; 32]>,
+    },
+    Chunk {
+        offset: u64,
+        bytes: Vec<u8>,
+    },
+    Done {
+        sha256: [u8; 32],
+        bytes: u64,
+    },
+    Error {
+        message: String,
+    },
 }

 #[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq)]