121 lines
5.0 KiB
Rust
121 lines
5.0 KiB
Rust
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use zcash_primitives::transaction::builder::Builder;
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use crate::{CompactTxStreamerClient, AddressList, DbAdapter, NETWORK, connect_lightwalletd, get_latest_height, GetAddressUtxosArg};
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use tonic::transport::Channel;
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use tonic::Request;
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use zcash_primitives::consensus::{BlockHeight, Parameters, BranchId};
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use zcash_primitives::transaction::components::amount::DEFAULT_FEE;
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use zcash_primitives::transaction::components::{Amount, OutPoint, TxOut};
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use std::str::FromStr;
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use anyhow::Context;
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use zcash_primitives::legacy::{Script, TransparentAddress};
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use zcash_client_backend::encoding::{decode_extended_full_viewing_key, decode_payment_address, encode_transparent_address};
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use crate::chain::send_transaction;
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use zcash_proofs::prover::LocalTxProver;
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use ripemd160::{Ripemd160, Digest};
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use sha2::Sha256;
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use secp256k1::{SecretKey, PublicKey, Secp256k1, All};
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use tiny_hderive::bip32::ExtendedPrivKey;
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use bip39::{Mnemonic, Language, Seed};
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pub const BIP44_PATH: &str = "m/44'/133'/0'/0/0";
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pub async fn get_taddr_balance(client: &mut CompactTxStreamerClient<Channel>, address: &str) -> anyhow::Result<u64> {
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let req = AddressList {
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addresses: vec![address.to_string()],
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};
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let rep = client.get_taddress_balance(Request::new(req)).await?.into_inner();
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Ok(rep.value_zat as u64)
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}
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pub async fn shield_taddr(db: &DbAdapter, account: u32, prover: &LocalTxProver, ld_url: &str) -> anyhow::Result<String> {
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let mut client = connect_lightwalletd(ld_url).await?;
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let last_height = get_latest_height(&mut client).await?;
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let ivk = db.get_ivk(account)?;
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let fvk = decode_extended_full_viewing_key(NETWORK.hrp_sapling_extended_full_viewing_key(), &ivk)?.unwrap();
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let z_address = db.get_address(account)?;
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let pa = decode_payment_address(NETWORK.hrp_sapling_payment_address(), &z_address)?.unwrap();
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let t_address = db.get_taddr(account)?;
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if t_address.is_none() { anyhow::bail!("No transparent address"); }
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let t_address = t_address.unwrap();
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let mut builder = Builder::new(NETWORK, BlockHeight::from_u32(last_height));
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let amount = Amount::from_u64(get_taddr_balance(&mut client, &t_address).await?).unwrap();
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if amount <= DEFAULT_FEE { anyhow::bail!("Not enough balance"); }
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let amount = amount - DEFAULT_FEE;
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let sk = db.get_tsk(account)?;
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let seckey =
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secp256k1::SecretKey::from_str(&sk).context("Cannot parse secret key")?;
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let req = GetAddressUtxosArg {
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addresses: vec![t_address.to_string()],
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start_height: 0,
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max_entries: 0,
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};
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let utxo_rep = client.get_address_utxos(Request::new(req)).await?.into_inner();
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for utxo in utxo_rep.address_utxos.iter() {
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let mut tx_hash = [0u8; 32];
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tx_hash.copy_from_slice(&utxo.txid);
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let op = OutPoint::new(tx_hash, utxo.index as u32);
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let script = Script(utxo.script.clone());
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let txout = TxOut {
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value: Amount::from_i64(utxo.value_zat).unwrap(),
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script_pubkey: script,
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};
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builder.add_transparent_input(seckey, op, txout)?;
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}
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let ovk = fvk.fvk.ovk;
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builder.add_sapling_output(Some(ovk), pa, amount, None)?;
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let consensus_branch_id =
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BranchId::for_height(&NETWORK, BlockHeight::from_u32(last_height));
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let (tx, _) = builder.build(consensus_branch_id, prover)?;
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let mut raw_tx: Vec<u8> = vec![];
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tx.write(&mut raw_tx)?;
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let tx_id = send_transaction(&mut client, &raw_tx, last_height).await?;
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log::info!("Tx ID = {}", tx_id);
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Ok(tx_id)
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}
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pub fn derive_tkeys(phrase: &str, path: &str) -> anyhow::Result<(String, String)> {
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let mnemonic = Mnemonic::from_phrase(&phrase, Language::English)?;
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let seed = Seed::new(&mnemonic, "");
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let secp = Secp256k1::<All>::new();
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let ext = ExtendedPrivKey::derive(&seed.as_bytes(), path).unwrap();
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let secret_key = SecretKey::from_slice(&ext.secret()).unwrap();
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let pub_key = PublicKey::from_secret_key(&secp, &secret_key);
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let pub_key = pub_key.serialize();
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let pub_key = Ripemd160::digest(&Sha256::digest(&pub_key));
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let address = TransparentAddress::PublicKey(pub_key.into());
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let address = encode_transparent_address(&NETWORK.b58_pubkey_address_prefix(), &NETWORK.b58_script_address_prefix(), &address);
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let sk = secret_key.to_string();
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Ok((sk, address))
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}
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#[cfg(test)]
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mod tests {
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use crate::{DbAdapter, LWD_URL};
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use crate::db::DEFAULT_DB_PATH;
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use crate::taddr::{shield_taddr, derive_tkeys};
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use zcash_proofs::prover::LocalTxProver;
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#[tokio::test]
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async fn test_shield_addr() {
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let prover = LocalTxProver::with_default_location().unwrap();
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let db = DbAdapter::new(DEFAULT_DB_PATH).unwrap();
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let txid = shield_taddr(&db, 1, &prover, LWD_URL).await.unwrap();
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println!("{}", txid);
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}
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#[test]
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fn test_derive() {
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let seed = dotenv::var("SEED").unwrap();
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for i in 0..10 {
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let (_sk, addr) = derive_tkeys(&seed, &format!("m/44'/133'/0'/0/{}", i)).unwrap();
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println!("{}", addr);
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}
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}
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}
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