arcis_interface/
path_with_hash.rs

1use sha2::{Digest, Sha256};
2use std::io::Write;
3
4fn compute_hash(src: &[u8]) -> [u8; 32] {
5    Sha256::digest(src).into()
6}
7
8#[derive(Debug, Clone)]
9pub struct PathWithHash {
10    pub path: String,
11    pub hash: [u8; 32],
12}
13
14impl PathWithHash {
15    pub fn new(contents: &[u8], path: String) -> Result<Self, std::io::Error> {
16        let mut file = std::fs::File::create(&path)?;
17        file.write_all(contents)?;
18        let hash = compute_hash(contents);
19        Ok(PathWithHash { path, hash })
20    }
21    pub fn check(&self) -> bool {
22        let Ok(file) = std::fs::read(&self.path) else {
23            return false;
24        };
25        let hash = compute_hash(&file);
26        self.hash == hash
27    }
28    pub fn checked_read(&self) -> Result<Vec<u8>, Box<dyn std::error::Error>> {
29        let file = std::fs::read(&self.path)?;
30        let hash = compute_hash(&file);
31        if self.hash == hash {
32            Ok(file)
33        } else {
34            Err("Hash mismatch".into())
35        }
36    }
37}
arcis_interface/path_with_hash.rs

arcis_interface/
path_with_hash.rs
