feat: support Solana wallet address in zetacore for SOL withdrawals

changelog.md

@@ -32,6 +32,7 @@
 * [2372](https://github.com/zeta-chain/node/pull/2372) - add queries for tss fund migration info
 * [2416](https://github.com/zeta-chain/node/pull/2416) - add Solana chain information
 * [2465](https://github.com/zeta-chain/node/pull/2465) - add Solana inbound SOL token observation
+* [2518](https://github.com/zeta-chain/node/pull/2518) - add support for Solana address in zetacore
 
 ### Refactor
 

pkg/chains/address.go

@@ -1,12 +1,13 @@
 package chains
 
 import (
-	"errors"
 	"fmt"
 	"strings"
 
 	"github.com/btcsuite/btcutil"
 	eth "github.com/ethereum/go-ethereum/common"
+	"github.com/gagliardetto/solana-go"
+	"github.com/pkg/errors"
 )
 
 type Address string
@@ -87,6 +88,22 @@ func DecodeBtcAddress(inputAddress string, chainID int64) (address btcutil.Addre
 	return
 }
 
+// DecodeSolanaWalletAddress decodes a Solana wallet address from a given string
+func DecodeSolanaWalletAddress(inputAddress string) (pk solana.PublicKey, err error) {
+	// decode the Base58 encoded address
+	pk, err = solana.PublicKeyFromBase58(inputAddress)
+	if err != nil {
+		return solana.PublicKey{}, errors.Wrapf(err, "error decoding solana wallet address %s", inputAddress)
+	}
+
+	// accept address that is generated from keypair
+	// reject off-curve address such as program derived address from 'findProgramAddress'
+	if !pk.IsOnCurve() {
+		return solana.PublicKey{}, fmt.Errorf("address %s is not on ed25519 curve", inputAddress)
+	}
+	return
+}
+
 // IsBtcAddressSupported returns true if the given BTC address is supported
 func IsBtcAddressSupported(addr btcutil.Address) bool {
 	switch addr.(type) {

pkg/chains/address_test.go

@@ -98,6 +98,58 @@ func TestDecodeBtcAddress(t *testing.T) {
 	})
 }
 
+func Test_DecodeSolanaWalletAddress(t *testing.T) {
+	tests := []struct {
+		name    string
+		address string
+		want    string
+		fail    bool
+		message string
+	}{
+		{
+			name:    "should decode a valid Solana wallet address",
+			address: "DCAK36VfExkPdAkYUQg6ewgxyinvcEyPLyHjRbmveKFw",
+			want:    "DCAK36VfExkPdAkYUQg6ewgxyinvcEyPLyHjRbmveKFw",
+			fail:    false,
+		},
+		{
+			name:    "should fail to decode an address with invalid length",
+			address: "DCAK36VfExkPdAkYUQg6ewgxyinvcEyPLyHjRbmveK",
+			want:    "",
+			fail:    true,
+			message: "error decoding solana wallet address",
+		},
+		{
+			name:    "should fail to decode an invalid Base58 address",
+			address: "DCAK36VfExkPdAkYUQg6ewgxyinvcEyPLyHjRbmveKFl", // contains invalid character 'l'
+			want:    "",
+			fail:    true,
+			message: "error decoding solana wallet address",
+		},
+		{
+			name:    "should fail to decode a program derived address (not on ed25519 curve)",
+			address: "9dcAyYG4bawApZocwZSyJBi9Mynf5EuKAJfifXdfkqik",
+			want:    "",
+			fail:    true,
+			message: "is not on ed25519 curve",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			pk, err := DecodeSolanaWalletAddress(tt.address)
+			if tt.fail {
+				require.Error(t, err)
+				require.Contains(t, err.Error(), tt.message)
+				return
+			}
+
+			require.NoError(t, err)
+			require.Equal(t, tt.want, pk.String())
+		})
+	}
+}
+
 func Test_IsBtcAddressSupported_P2TR(t *testing.T) {
 	tests := []struct {
 		name      string

pkg/chains/chain.go

@@ -52,13 +52,14 @@ func (chain Chain) IsExternalChain() bool {
 // on EVM chain, it is 20Bytes
 // on Bitcoin chain, it is P2WPKH address, []byte(bech32 encoded string)
 func (chain Chain) EncodeAddress(b []byte) (string, error) {
-	if chain.Consensus == Consensus_ethereum {
+	switch chain.Consensus {
+	case Consensus_ethereum:
 		addr := ethcommon.BytesToAddress(b)
 		if addr == (ethcommon.Address{}) {
 			return "", fmt.Errorf("invalid EVM address")
 		}
 		return addr.Hex(), nil
-	} else if chain.Consensus == Consensus_bitcoin {
+	case Consensus_bitcoin:
 		addrStr := string(b)
 		chainParams, err := GetBTCChainParams(chain.ChainId)
 		if err != nil {
@@ -72,8 +73,15 @@ func (chain Chain) EncodeAddress(b []byte) (string, error) {
 			return "", fmt.Errorf("address is not for network %s", chainParams.Name)
 		}
 		return addrStr, nil
+	case Consensus_solana_consensus:
+		pk, err := DecodeSolanaWalletAddress(string(b))
+		if err != nil {
+			return "", err
+		}
+		return pk.String(), nil
+	default:
+		return "", fmt.Errorf("chain (%d) not supported", chain.ChainId)
 	}
-	return "", fmt.Errorf("chain (%d) not supported", chain.ChainId)
 }
 
 func (chain Chain) IsEVMChain() bool {
@@ -111,7 +119,7 @@ func IsEVMChain(chainID int64, additionalChains []Chain) bool {
 // additionalChains is a list of additional chains to search from
 // in practice, it is used in the protocol to dynamically support new chains without doing an upgrade
 func IsBitcoinChain(chainID int64, additionalChains []Chain) bool {
-	return ChainIDInChainList(chainID, ChainListByConsensus(Consensus_bitcoin, additionalChains))
+	return ChainIDInChainList(chainID, ChainListByNetwork(Network_btc, additionalChains))
 }
 
 // IsSolanaChain returns true if the chain is a Solana chain

pkg/chains/chain_test.go

@@ -1,9 +1,10 @@
 package chains_test
 
 import (
-	"github.com/zeta-chain/zetacore/testutil/sample"
 	"testing"
 
+	"github.com/zeta-chain/zetacore/testutil/sample"
+
 	"github.com/btcsuite/btcd/chaincfg"
 	ethcommon "github.com/ethereum/go-ethereum/common"
 	"github.com/stretchr/testify/require"
@@ -146,43 +147,43 @@ func TestChain_EncodeAddress(t *testing.T) {
 		wantErr bool
 	}{
 		{
-			name: "should error if b is not a valid address on the bitcoin network",
-			chain: chains.Chain{
-				ChainName: chains.ChainName_btc_testnet,
-				ChainId:   18332,
-				Consensus: chains.Consensus_bitcoin,
-			},
+			name:    "should error if b is not a valid address on the bitcoin network",
+			chain:   chains.BitcoinTestnet,
 			b:       []byte("bc1qk0cc73p8m7hswn8y2q080xa4e5pxapnqgp7h9c"),
 			want:    "",
 			wantErr: true,
 		},
 		{
-			name: "should pass if b is a valid address on the network",
-			chain: chains.Chain{
-				ChainName: chains.ChainName_btc_mainnet,
-				ChainId:   8332,
-				Consensus: chains.Consensus_bitcoin,
-			},
+			name:    "should pass if b is a valid address on the network",
+			chain:   chains.BitcoinMainnet,
 			b:       []byte("bc1qk0cc73p8m7hswn8y2q080xa4e5pxapnqgp7h9c"),
 			want:    "bc1qk0cc73p8m7hswn8y2q080xa4e5pxapnqgp7h9c",
 			wantErr: false,
 		},
 		{
-			name: "should error if b is not a valid address on the evm network",
-			chain: chains.Chain{
-				ChainName: chains.ChainName_goerli_testnet,
-				ChainId:   5,
-			},
+			name:    "should pass if b is a valid wallet address on the solana network",
+			chain:   chains.SolanaMainnet,
+			b:       []byte("DCAK36VfExkPdAkYUQg6ewgxyinvcEyPLyHjRbmveKFw"),
+			want:    "DCAK36VfExkPdAkYUQg6ewgxyinvcEyPLyHjRbmveKFw",
+			wantErr: false,
+		},
+		{
+			name:    "should error if b is not a valid Base58 address",
+			chain:   chains.SolanaMainnet,
+			b:       []byte("9G0P8HkKqegZ7B6cE2hGvkZjHjSH14WZXDNZQmwYLokAc"), // contains invalid digit '0'
+			want:    "",
+			wantErr: true,
+		},
+		{
+			name:    "should error if b is not a valid address on the evm network",
+			chain:   chains.Ethereum,
 			b:       ethcommon.Hex2Bytes("0x321"),
 			want:    "",
 			wantErr: true,
 		},
 		{
-			name: "should pass if b is a valid address on the evm network",
-			chain: chains.Chain{
-				ChainName: chains.ChainName_goerli_testnet,
-				ChainId:   5,
-			},
+			name:    "should pass if b is a valid address on the evm network",
+			chain:   chains.Ethereum,
 			b:       []byte("0x321"),
 			want:    "0x0000000000000000000000000000003078333231",
 			wantErr: false,
@@ -294,6 +295,12 @@ func TestDecodeAddressFromChainID(t *testing.T) {
 			addr:    "bc1qk0cc73p8m7hswn8y2q080xa4e5pxapnqgp7h9c",
 			want:    []byte("bc1qk0cc73p8m7hswn8y2q080xa4e5pxapnqgp7h9c"),
 		},
+		{
+			name:    "Solana",
+			chainID: chains.SolanaMainnet.ChainId,
+			addr:    "DCAK36VfExkPdAkYUQg6ewgxyinvcEyPLyHjRbmveKFw",
+			want:    []byte("DCAK36VfExkPdAkYUQg6ewgxyinvcEyPLyHjRbmveKFw"),
+		},
 		{
 			name:    "Non-supported chain",
 			chainID: 9999,