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src/backup/catalog.rs - CatalogReader: verify magic number

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This commit is contained in:
Dietmar Maurer 2019-11-12 12:54:06 +01:00
parent 2ec208aef5
commit 6aa906b547
1 changed files with 6 additions and 1 deletions
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7
src/backup/catalog.rs
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@ -396,7 +396,12 @@ impl <R: Read + Seek> CatalogReader<R> {
/// Get the root DirEntry /// Get the root DirEntry
pub fn root(&mut self) -> Result<DirEntry, Error> { pub fn root(&mut self) -> Result<DirEntry, Error> {
// Root dir is special // Root dir is special
// mixme: verify magic self.reader.seek(SeekFrom::Start(0))?;
let mut magic = [ 0u8; 8];
self.reader.read_exact(&mut magic)?;
if magic != PROXMOX_CATALOG_FILE_MAGIC_1_0 {
bail!("got unexpected magic number for catalog");
}
self.reader.seek(SeekFrom::End(-8))?; self.reader.seek(SeekFrom::End(-8))?;
let start = unsafe { self.reader.read_le_value::<u64>()? }; let start = unsafe { self.reader.read_le_value::<u64>()? };
Ok(DirEntry { name: b"".to_vec(), attr: DirEntryAttribute::Directory { start } }) Ok(DirEntry { name: b"".to_vec(), attr: DirEntryAttribute::Directory { start } })