acme_chains/actors/validators/
mod.rs

1/*
2   Appellation: mod
3   Context:
4   Creator: FL03 <jo3mccain@icloud.com>
5   Description:
6       ... Summary ...
7*/
8
9pub use utils::*;
10
11mod utils {
12    use crate::{calculate_block_hash, convert_hash_into_binary, Block, DIFFICULTY_PREFIX};
13
14    pub fn determine_block_validity(block: &Block, pblock: &Block) -> bool {
15        if block.previous != pblock.hash {
16            log::warn!("block with id: {} has wrong previous hash", block.id);
17            return false;
18        } else if !convert_hash_into_binary(
19            &hex::decode(&block.hash).expect("Decoding Error: failed to decode the BlockHash"),
20        )
21            .starts_with(DIFFICULTY_PREFIX.as_ref())
22        {
23            log::warn!("block with id: {} has invalid difficulty", block.id);
24            return false;
25        } else if block.id != pblock.id + 1 {
26            log::warn!(
27                "block with id: {} is not the next block after the latest: {}",
28                block.id,
29                pblock.id
30            );
31            return false;
32        } else if hex::encode(calculate_block_hash(
33            block.id,
34            block.data.clone(),
35            block.nonce,
36            block.previous.clone(),
37            block.timestamp,
38        )) != block.hash
39        {
40            log::warn!("block with id: {} has invalid hash", block.id);
41            return false;
42        }
43        true
44    }
45
46    pub fn determine_chain_validity(chain: &[Block]) -> bool {
47        for i in 0..chain.len() {
48            if i == 0 {
49                continue;
50            }
51            let first = chain.get(i - 1).expect("has to exist");
52            let second = chain.get(i).expect("has to exist");
53            if !determine_block_validity(second, first) {
54                return false;
55            }
56        }
57        true
58    }
59}
acme_chains/actors/validators/mod.rs

acme_chains/actors/validators/
mod.rs
