tyler/proxmox-backup
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add DataBlob::crypt_mode

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and move use statements up

Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
This commit is contained in:
Wolfgang Bumiller 2020-07-08 09:18:44 +02:00
parent af3a0ae7b1
commit 3b66040de6
1 changed files with 18 additions and 3 deletions
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21
src/backup/data_blob.rs
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@ -3,10 +3,10 @@ use std::convert::TryInto;
use proxmox::tools::io::{ReadExt, WriteExt}; use proxmox::tools::io::{ReadExt, WriteExt};
const MAX_BLOB_SIZE: usize = 128*1024*1024;
use super::file_formats::*; use super::file_formats::*;
use super::CryptConfig; use super::{CryptConfig, CryptMode};
const MAX_BLOB_SIZE: usize = 128*1024*1024;
/// Encoded data chunk with digest and positional information /// Encoded data chunk with digest and positional information
pub struct ChunkInfo { pub struct ChunkInfo {
@ -166,6 +166,21 @@ impl DataBlob {
Ok(blob) Ok(blob)
} }
/// Get the encryption mode for this blob.
pub fn crypt_mode(&self) -> Result<CryptMode, Error> {
let magic = self.magic();
Ok(if magic == &UNCOMPRESSED_BLOB_MAGIC_1_0 || magic == &COMPRESSED_BLOB_MAGIC_1_0 {
CryptMode::None
} else if magic == &ENCR_COMPR_BLOB_MAGIC_1_0 || magic == &ENCRYPTED_BLOB_MAGIC_1_0 {
CryptMode::Encrypt
} else if magic == &AUTH_COMPR_BLOB_MAGIC_1_0 || magic == &AUTHENTICATED_BLOB_MAGIC_1_0 {
CryptMode::SignOnly
} else {
bail!("Invalid blob magic number.");
})
}
/// Decode blob data /// Decode blob data
pub fn decode(&self, config: Option<&CryptConfig>) -> Result<Vec<u8>, Error> { pub fn decode(&self, config: Option<&CryptConfig>) -> Result<Vec<u8>, Error> {