59 lines
1.8 KiB
Rust
59 lines
1.8 KiB
Rust
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use ethers::utils::keccak256;
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use eyre::Result;
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use serde::Deserialize;
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use serde::de::Error;
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use jsonrpsee::{http_client::HttpClientBuilder, rpc_params, core::client::ClientT};
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use ethers::utils::rlp::RlpStream;
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use ethers::prelude::{U256, H256, Address};
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use super::utils::hex_str_to_bytes;
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pub async fn get_proof(address: &str, block: u64) -> Result<Proof> {
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let rpc = "https://eth-mainnet.g.alchemy.com:443/v2/sUiZsY3BSTYXjSHIvPc9rGDipR7lAlT4";
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let client = HttpClientBuilder::default().build(rpc)?;
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let block_hex = format!("0x{:x}", block);
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let params = rpc_params!(address, [""], block_hex);
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Ok(client.request("eth_getProof", params).await?)
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}
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pub fn verify(proof: &Proof) -> Result<()> {
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let account_encoded = encode_account(proof);
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println!("{:?}", account_encoded);
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let state_root = hex_str_to_bytes("0xeb5eb01bd4f503a5698d136c75b37ef2660d6842bf77d0453f2a7fa4a6780d91")?;
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let address_hash = keccak256(proof.address);
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Ok(())
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}
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fn encode_account(proof: &Proof) -> Vec<u8> {
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let mut stream = RlpStream::new_list(4);
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stream.append(&proof.nonce);
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stream.append(&proof.balance);
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stream.append(&proof.storage_hash);
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stream.append(&proof.code_hash);
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let encoded = stream.out();
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encoded.to_vec()
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}
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#[derive(Deserialize, Debug)]
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#[serde(rename_all = "camelCase")]
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pub struct Proof {
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address: Address,
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balance: U256,
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code_hash: H256,
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nonce: U256,
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storage_hash: H256,
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#[serde(deserialize_with = "proof_deserialize")]
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account_proof: Vec<Vec<u8>>,
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}
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fn proof_deserialize<'de, D>(deserializer: D) -> Result<Vec<Vec<u8>>, D::Error> where D: serde::Deserializer<'de> {
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let branch: Vec<String> = serde::Deserialize::deserialize(deserializer)?;
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Ok(branch.iter().map(|elem| {
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hex_str_to_bytes(elem)
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}).collect::<Result<_>>().map_err(D::Error::custom)?)
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}
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