50 lines
1008 B
Rust
50 lines
1008 B
Rust
#![no_std]
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#[macro_use]
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extern crate alloc;
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use alloc::vec::Vec;
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use cryptography::hashing::checksum;
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use process::PID;
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use versioning::Version;
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pub const VERSION: Version = Version::new(0, 1, 0);
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#[repr(C)]
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pub struct Message {
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src: PID, // bytes 0-3
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dest: PID, // bytes 4-7
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version: Version, // bytes 8-10
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checksum: u64, // bytes 11-19
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length: usize, // bytes 20-23
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timestamp: u64, // bytes 24-31
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body: Vec<u8>,
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}
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impl Message {
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pub fn set_checksum(&mut self) {
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self.checksum = self.compute_body_checksum()
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}
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fn compute_body_checksum(&mut self) -> u64 {
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checksum(&self.body)
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}
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}
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#[test]
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fn test_checksum() {
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let mut message = Message {
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src: 123,
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dest: 456,
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version: Version::new(0, 1, 0),
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checksum: 0,
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timestamp: 0,
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length: 5,
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body: vec![1, 2],
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};
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message.set_checksum();
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assert_eq!(message.checksum, 3);
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assert_ne!(message.checksum, 1)
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}
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