[BCH]: Migrate BitcoinCash to BitcoinV2 (Rust)

android/app/src/androidTest/java/com/trustwallet/core/app/blockchains/bitcoincash/TestBitcoinCashSigning.kt

@@ -0,0 +1,81 @@
+package com.trustwallet.core.app.blockchains.bitcoincash
+
+import com.trustwallet.core.app.utils.Numeric
+import com.trustwallet.core.app.utils.toHexBytesInByteString
+import org.junit.Assert.assertEquals
+import org.junit.Test
+import wallet.core.java.AnySigner
+import wallet.core.jni.BitcoinSigHashType
+import wallet.core.jni.CoinType
+import wallet.core.jni.proto.Bitcoin
+import wallet.core.jni.proto.BitcoinV2
+import wallet.core.jni.proto.Common.SigningError
+
+class TestBitcoinCashSigning {
+
+    init {
+        System.loadLibrary("TrustWalletCore")
+    }
+
+    @Test
+    fun testSignV2P2PKH() {
+        val privateKey = "7fdafb9db5bc501f2096e7d13d331dc7a75d9594af3d251313ba8b6200f4e384".toHexBytesInByteString()
+
+        val utxo1 = BitcoinV2.Input.newBuilder().apply {
+            outPoint = BitcoinV2.OutPoint.newBuilder().apply {
+                hash = "e28c2b955293159898e34c6840d99bf4d390e2ee1c6f606939f18ee1e2000d05".toHexBytesInByteString()
+                vout = 2
+            }.build()
+            value = 5151
+            sighashType = BitcoinSigHashType.ALL.value() + BitcoinSigHashType.FORK.value()
+            receiverAddress = "bitcoincash:qzhlrcrcne07x94h99thved2pgzdtv8ccujjy73xya"
+        }
+
+        val out1 = BitcoinV2.Output.newBuilder().apply {
+            value = 600
+            // Legacy address
+            toAddress = "1Bp9U1ogV3A14FMvKbRJms7ctyso4Z4Tcx"
+        }
+        val changeOutputExplicit = BitcoinV2.Output.newBuilder().apply {
+            value = 4325
+            // Legacy address
+            toAddress = "qz0q3xmg38sr94rw8wg45vujah7kzma3cskxymnw06"
+        }
+
+        val builder = BitcoinV2.TransactionBuilder.newBuilder()
+            .setVersion(BitcoinV2.TransactionVersion.V1)
+            .addInputs(utxo1)
+            .addOutputs(out1)
+            .addOutputs(changeOutputExplicit)
+            .setInputSelector(BitcoinV2.InputSelector.UseAll)
+            .setFixedDustThreshold(546)
+            .build()
+
+        val input = BitcoinV2.SigningInput.newBuilder()
+            .addPrivateKeys(privateKey)
+            .setBuilder(builder)
+            .setChainInfo(BitcoinV2.ChainInfo.newBuilder().apply {
+                p2PkhPrefix = 0
+                p2ShPrefix = 5
+                hrp = "bitcoincash"
+            })
+            .build()
+
+        val legacyInput = Bitcoin.SigningInput.newBuilder()
+            .setSigningV2(input)
+            // `CoinType` must be set to be handled correctly.
+            .setCoinType(CoinType.BITCOINCASH.value())
+            .build()
+
+        val outputLegacy = AnySigner.sign(legacyInput, CoinType.BITCOINCASH, Bitcoin.SigningOutput.parser())
+        assertEquals(outputLegacy.error, SigningError.OK)
+        assert(outputLegacy.hasSigningResultV2())
+
+        val output = outputLegacy.signingResultV2
+        assertEquals(output.error, SigningError.OK)
+        assertEquals(
+            Numeric.toHexString(output.encoded.toByteArray()),
+            "0x0100000001e28c2b955293159898e34c6840d99bf4d390e2ee1c6f606939f18ee1e2000d05020000006b483045022100b70d158b43cbcded60e6977e93f9a84966bc0cec6f2dfd1463d1223a90563f0d02207548d081069de570a494d0967ba388ff02641d91cadb060587ead95a98d4e3534121038eab72ec78e639d02758e7860cdec018b49498c307791f785aa3019622f4ea5bffffffff0258020000000000001976a914769bdff96a02f9135a1d19b749db6a78fe07dc9088ace5100000000000001976a9149e089b6889e032d46e3b915a3392edfd616fb1c488ac00000000"
+        )
+    }
+}

codegen-v2/src/codegen/rust/templates/blockchain_crate/entry.rs

@@ -49,11 +49,7 @@ impl CoinEntry for {BLOCKCHAIN}Entry {
     }
 
     #[inline]
-    fn parse_address_unchecked(
-        &self,
-        _coin: &dyn CoinContext,
-        address: &str,
-    ) -> AddressResult<Self::Address> {
+    fn parse_address_unchecked(&self, address: &str) -> AddressResult<Self::Address> {
         {BLOCKCHAIN}Address::from_str(address)
     }
 

include/TrustWalletCore/TWBlockchain.h

@@ -65,6 +65,7 @@ enum TWBlockchain {
     TWBlockchainInternetComputer = 52,
     TWBlockchainNativeEvmos = 53, // Cosmos
     TWBlockchainNativeInjective = 54, // Cosmos
+    TWBlockchainBitcoinCash = 55,
 };
 
 TW_EXTERN_C_END

registry.json

@@ -1453,7 +1453,7 @@
     "coinId": 145,
     "symbol": "BCH",
     "decimals": 8,
-    "blockchain": "Bitcoin",
+    "blockchain": "BitcoinCash",
     "derivation": [
       {
         "path": "m/44'/145'/0'/0/0",
@@ -3667,7 +3667,7 @@
     "coinId": 899,
     "symbol": "XEC",
     "decimals": 2,
-    "blockchain": "Bitcoin",
+    "blockchain": "BitcoinCash",
     "derivation": [
       {
         "path": "m/44'/899'/0'/0/0",

rust/Cargo.toml

@@ -3,6 +3,7 @@ members = [
     "chains/tw_aptos",
     "chains/tw_binance",
     "chains/tw_bitcoin",
+    "chains/tw_bitcoincash",
     "chains/tw_cosmos",
     "chains/tw_ethereum",
     "chains/tw_greenfield",

rust/chains/tw_aptos/src/entry.rs

@@ -49,11 +49,7 @@ impl CoinEntry for AptosEntry {
     }
 
     #[inline]
-    fn parse_address_unchecked(
-        &self,
-        _coin: &dyn CoinContext,
-        address: &str,
-    ) -> AddressResult<Self::Address> {
+    fn parse_address_unchecked(&self, address: &str) -> AddressResult<Self::Address> {
         Address::from_str(address)
     }
 

rust/chains/tw_binance/src/entry.rs

@@ -49,11 +49,7 @@ impl CoinEntry for BinanceEntry {
     }
 
     #[inline]
-    fn parse_address_unchecked(
-        &self,
-        _coin: &dyn CoinContext,
-        address: &str,
-    ) -> AddressResult<Self::Address> {
+    fn parse_address_unchecked(&self, address: &str) -> AddressResult<Self::Address> {
         BinanceAddress::from_str(address)
     }
 

rust/chains/tw_bitcoin/src/context.rs

@@ -0,0 +1,28 @@
+// SPDX-License-Identifier: Apache-2.0
+//
+// Copyright © 2017 Trust Wallet.
+
+use tw_coin_entry::error::prelude::SigningResult;
+use tw_utxo::address::standard_bitcoin::StandardBitcoinAddress;
+use tw_utxo::context::{AddressPrefixes, UtxoContext};
+use tw_utxo::script::Script;
+
+#[derive(Default)]
+pub struct StandardBitcoinContext;
+
+impl UtxoContext for StandardBitcoinContext {
+    type Address = StandardBitcoinAddress;
+
+    fn addr_to_script_pubkey(
+        addr: &Self::Address,
+        prefixes: AddressPrefixes,
+    ) -> SigningResult<Script> {
+        match addr {
+            StandardBitcoinAddress::Legacy(legacy) => {
+                legacy.to_script_pubkey(prefixes.p2pkh_prefix, prefixes.p2sh_prefix)
+            },
+            StandardBitcoinAddress::Segwit(segwit) => segwit.to_script_pubkey(),
+            StandardBitcoinAddress::Taproot(taproot) => taproot.to_script_pubkey(),
+        }
+    }
+}

rust/chains/tw_bitcoin/src/entry.rs

@@ -1,3 +1,4 @@
+use crate::context::StandardBitcoinContext;
 use crate::modules::compiler::BitcoinCompiler;
 use crate::modules::planner::BitcoinPlanner;
 use crate::modules::signer::BitcoinSigner;
@@ -26,7 +27,7 @@ impl CoinEntry for BitcoinEntry {
 
     // Optional modules:
     type JsonSigner = NoJsonSigner;
-    type PlanBuilder = BitcoinPlanner;
+    type PlanBuilder = BitcoinPlanner<StandardBitcoinContext>;
     type MessageSigner = NoMessageSigner;
     type WalletConnector = NoWalletConnector;
     type TransactionDecoder = NoTransactionDecoder;
@@ -43,11 +44,7 @@ impl CoinEntry for BitcoinEntry {
     }
 
     #[inline]
-    fn parse_address_unchecked(
-        &self,
-        _coin: &dyn CoinContext,
-        address: &str,
-    ) -> AddressResult<Self::Address> {
+    fn parse_address_unchecked(&self, address: &str) -> AddressResult<Self::Address> {
         StandardBitcoinAddress::from_str(address)
     }
 
@@ -64,7 +61,7 @@ impl CoinEntry for BitcoinEntry {
 
     #[inline]
     fn sign(&self, coin: &dyn CoinContext, proto: Self::SigningInput<'_>) -> Self::SigningOutput {
-        BitcoinSigner::sign(coin, &proto)
+        BitcoinSigner::<StandardBitcoinContext>::sign(coin, &proto)
     }
 
     #[inline]
@@ -73,7 +70,7 @@ impl CoinEntry for BitcoinEntry {
         coin: &dyn CoinContext,
         proto: Proto::SigningInput<'_>,
     ) -> Self::PreSigningOutput {
-        BitcoinCompiler::preimage_hashes(coin, proto)
+        BitcoinCompiler::<StandardBitcoinContext>::preimage_hashes(coin, proto)
     }
 
     #[inline]
@@ -84,12 +81,12 @@ impl CoinEntry for BitcoinEntry {
         signatures: Vec<SignatureBytes>,
         public_keys: Vec<PublicKeyBytes>,
     ) -> Self::SigningOutput {
-        BitcoinCompiler::compile(coin, proto, signatures, public_keys)
+        BitcoinCompiler::<StandardBitcoinContext>::compile(coin, proto, signatures, public_keys)
     }
 
     #[inline]
     fn plan_builder(&self) -> Option<Self::PlanBuilder> {
-        Some(BitcoinPlanner)
+        Some(BitcoinPlanner::<StandardBitcoinContext>::default())
     }
 
     #[inline]

rust/chains/tw_bitcoin/src/lib.rs

@@ -2,5 +2,6 @@
 //
 // Copyright © 2017 Trust Wallet.
 
+pub mod context;
 pub mod entry;
 pub mod modules;

rust/chains/tw_bitcoin/src/modules/compiler.rs

@@ -6,6 +6,7 @@ use crate::modules::protobuf_builder::ProtobufBuilder;
 use crate::modules::psbt_request::PsbtRequest;
 use crate::modules::signing_request::SigningRequestBuilder;
 use std::borrow::Cow;
+use std::marker::PhantomData;
 use tw_coin_entry::coin_context::CoinContext;
 use tw_coin_entry::coin_entry::{PublicKeyBytes, SignatureBytes};
 use tw_coin_entry::error::prelude::*;
@@ -15,6 +16,7 @@ use tw_proto::BitcoinV2::Proto::mod_PreSigningOutput::{
     SigningMethod as ProtoSigningMethod, TaprootTweak as ProtoTaprootTweak,
 };
 use tw_proto::BitcoinV2::Proto::mod_SigningInput::OneOftransaction as TransactionType;
+use tw_utxo::context::UtxoContext;
 use tw_utxo::modules::sighash_computer::{SighashComputer, TaprootTweak, TxPreimage};
 use tw_utxo::modules::sighash_verifier::SighashVerifier;
 use tw_utxo::modules::tx_compiler::TxCompiler;
@@ -23,9 +25,11 @@ use tw_utxo::modules::utxo_selector::SelectResult;
 use tw_utxo::signing_mode::SigningMethod;
 use tw_utxo::transaction::transaction_interface::TransactionInterface;
 
-pub struct BitcoinCompiler;
+pub struct BitcoinCompiler<Context: UtxoContext> {
+    _phantom: PhantomData<Context>,
+}
 
-impl BitcoinCompiler {
+impl<Context: UtxoContext> BitcoinCompiler<Context> {
     /// Please note that [`Proto::SigningInput::public_key`] must be set.
     /// If the public key should be derived from a private key, please do it before this method is called.
     #[inline]
@@ -43,10 +47,12 @@ impl BitcoinCompiler {
     ) -> SigningResult<Proto::PreSigningOutput<'static>> {
         let unsigned_tx = match input.transaction {
             TransactionType::builder(ref tx_builder) => {
-                let request = SigningRequestBuilder::build(coin, &input, tx_builder)?;
+                let request = SigningRequestBuilder::<Context>::build(coin, &input, tx_builder)?;
                 TxPlanner::plan(request)?.unsigned_tx
             },
-            TransactionType::psbt(ref psbt) => PsbtRequest::build(&input, psbt)?.unsigned_tx,
+            TransactionType::psbt(ref psbt) => {
+                PsbtRequest::<Context>::build(&input, psbt)?.unsigned_tx
+            },
             TransactionType::None => {
                 return SigningError::err(SigningErrorType::Error_invalid_params)
                     .context("Either `TransactionBuilder` or `Psbt` should be set")
@@ -104,7 +110,7 @@ impl BitcoinCompiler {
         tx_builder_input: &Proto::TransactionBuilder,
         signatures: Vec<SignatureBytes>,
     ) -> SigningResult<Proto::SigningOutput<'static>> {
-        let request = SigningRequestBuilder::build(coin, input, tx_builder_input)?;
+        let request = SigningRequestBuilder::<Context>::build(coin, input, tx_builder_input)?;
         let SelectResult { unsigned_tx, plan } = TxPlanner::plan(request)?;
 
         SighashVerifier::verify_signatures(&unsigned_tx, &signatures)?;
@@ -130,7 +136,7 @@ impl BitcoinCompiler {
         psbt: &Proto::Psbt,
         signatures: Vec<SignatureBytes>,
     ) -> SigningResult<Proto::SigningOutput<'static>> {
-        let PsbtRequest { unsigned_tx, .. } = PsbtRequest::build(input, psbt)?;
+        let PsbtRequest { unsigned_tx, .. } = PsbtRequest::<Context>::build(input, psbt)?;
         let fee = unsigned_tx.fee()?;
 
         SighashVerifier::verify_signatures(&unsigned_tx, &signatures)?;

rust/chains/tw_bitcoin/src/modules/planner/mod.rs

@@ -6,19 +6,24 @@ use crate::modules::signing_request::SigningRequestBuilder;
 use crate::modules::tx_builder::utxo_protobuf::parse_out_point;
 use std::borrow::Cow;
 use std::collections::HashMap;
+use std::marker::PhantomData;
 use tw_coin_entry::coin_context::CoinContext;
 use tw_coin_entry::error::prelude::*;
 use tw_coin_entry::modules::plan_builder::PlanBuilder;
 use tw_coin_entry::signing_output_error;
 use tw_proto::BitcoinV2::Proto;
+use tw_utxo::context::UtxoContext;
 use tw_utxo::modules::tx_planner::TxPlanner;
 use tw_utxo::modules::utxo_selector::SelectResult;
 
 pub mod psbt_planner;
 
-pub struct BitcoinPlanner;
+#[derive(Default)]
+pub struct BitcoinPlanner<Context: UtxoContext> {
+    _phantom: PhantomData<Context>,
+}
 
-impl BitcoinPlanner {
+impl<Context: UtxoContext> BitcoinPlanner<Context> {
     pub fn plan_impl<'a>(
         coin: &dyn CoinContext,
         input: &Proto::SigningInput<'a>,
@@ -28,7 +33,7 @@ impl BitcoinPlanner {
         match input.transaction {
             TransactionType::builder(ref tx) => Self::plan_with_tx_builder(coin, input, tx),
             TransactionType::psbt(ref psbt) => {
-                psbt_planner::PsbtPlanner::plan_psbt(coin, input, psbt)
+                psbt_planner::PsbtPlanner::<Context>::plan_psbt(coin, input, psbt)
             },
             TransactionType::None => SigningError::err(SigningErrorType::Error_invalid_params)
                 .context("Either `TransactionBuilder` or `Psbt` should be set"),
@@ -40,7 +45,7 @@ impl BitcoinPlanner {
         input: &Proto::SigningInput<'a>,
         tx_builder: &Proto::TransactionBuilder<'a>,
     ) -> SigningResult<Proto::TransactionPlan<'a>> {
-        let request = SigningRequestBuilder::build(coin, input, tx_builder)?;
+        let request = SigningRequestBuilder::<Context>::build(coin, input, tx_builder)?;
         let SelectResult { unsigned_tx, plan } = TxPlanner::plan(request)?;
 
         // Prepare a map of source Inputs Proto `{ OutPoint -> Input }`.
@@ -93,7 +98,7 @@ impl BitcoinPlanner {
     }
 }
 
-impl PlanBuilder for BitcoinPlanner {
+impl<Context: UtxoContext> PlanBuilder for BitcoinPlanner<Context> {
     type SigningInput<'a> = Proto::SigningInput<'a>;
     type Plan<'a> = Proto::TransactionPlan<'a>;