raiden_primitives/
impls.rs

1#![warn(clippy::missing_docs_in_private_items)]
2
3use web3::{
4	signing::{
5		keccak256,
6		Signature,
7	},
8	types::{
9		Address,
10		Bytes,
11		U256,
12	},
13};
14
15use crate::traits::{
16	Checksum,
17	Stringify,
18	ToBytes,
19	ToPexAddress,
20};
21
22impl ToBytes for U256 {
23	fn to_bytes(&self) -> Vec<u8> {
24		let mut bytes = [0u8; 32];
25		self.to_big_endian(&mut bytes);
26		bytes.to_vec()
27	}
28}
29
30impl ToBytes for Signature {
31	fn to_bytes(&self) -> Vec<u8> {
32		let rb = self.r.to_fixed_bytes();
33		let sb = self.s.to_fixed_bytes();
34		let sv = self.v.to_be_bytes();
35
36		let mut b = vec![];
37		b.extend(&rb);
38		b.extend(&sb);
39		b.push(sv[sv.len() - 1]);
40		b
41	}
42}
43
44impl Stringify for Signature {
45	fn as_string(&self) -> String {
46		let bytes = self.to_bytes();
47		format!("0x{}", hex::encode(bytes))
48	}
49}
50
51impl Stringify for Bytes {
52	fn as_string(&self) -> String {
53		let bytes = &self.0;
54		format!("0x{}", hex::encode(bytes))
55	}
56}
57
58/// Adapted from: <https://github.com/gakonst/ethers-rs/blob/da743fc8b29ffeb650c767f622bb19eba2f057b7/ethers-core/src/utils/mod.rs#L407>
59impl Checksum for Address {
60	fn checksum(&self) -> String {
61		let prefixed_address = format!("{self:x}");
62		let hash = hex::encode(keccak256(prefixed_address.as_bytes()));
63		let hash = hash.as_bytes();
64
65		let addr_hex = hex::encode(self.as_bytes());
66		let addr_hex = addr_hex.as_bytes();
67
68		addr_hex.iter().zip(hash).fold("0x".to_owned(), |mut encoded, (addr, hash)| {
69			encoded.push(if *hash >= 56 {
70				addr.to_ascii_uppercase() as char
71			} else {
72				addr.to_ascii_lowercase() as char
73			});
74			encoded
75		})
76	}
77}
78
79impl Checksum for Option<Address> {
80	fn checksum(&self) -> String {
81		if let Some(address) = self {
82			address.checksum()
83		} else {
84			String::new()
85		}
86	}
87}
88
89impl ToPexAddress for Address {
90	fn pex(&self) -> String {
91		hex::encode(&self.checksum()[..8])
92	}
93}
raiden_primitives/impls.rs

raiden_primitives/
impls.rs
