70 lines
2.1 KiB
Go
70 lines
2.1 KiB
Go
// Copyright 2020 Coinbase, Inc.
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
package bitcoin
|
|
|
|
import (
|
|
"fmt"
|
|
"strconv"
|
|
"strings"
|
|
|
|
"github.com/btcsuite/btcd/chaincfg"
|
|
"github.com/btcsuite/btcd/chaincfg/chainhash"
|
|
"github.com/btcsuite/btcd/txscript"
|
|
"github.com/btcsuite/btcutil"
|
|
"github.com/coinbase/rosetta-sdk-go/types"
|
|
)
|
|
|
|
// ParseCoinIdentifier returns the corresponding hash and index associated
|
|
// with a *types.CoinIdentifier.
|
|
func ParseCoinIdentifier(coinIdentifier *types.CoinIdentifier) (*chainhash.Hash, uint32, error) {
|
|
utxoSpent := strings.Split(coinIdentifier.Identifier, ":")
|
|
|
|
outpointHash := utxoSpent[0]
|
|
if len(outpointHash) != TransactionHashLength {
|
|
return nil, 0, fmt.Errorf("outpoint_hash %s is not length 64", outpointHash)
|
|
}
|
|
|
|
hash, err := chainhash.NewHashFromStr(outpointHash)
|
|
if err != nil {
|
|
return nil, 0, fmt.Errorf("%w unable to construct has from string %s", err, outpointHash)
|
|
}
|
|
|
|
outpointIndex, err := strconv.ParseUint(utxoSpent[1], 10, 32)
|
|
if err != nil {
|
|
return nil, 0, fmt.Errorf("%w unable to parse outpoint_index", err)
|
|
}
|
|
|
|
return hash, uint32(outpointIndex), nil
|
|
}
|
|
|
|
// ParseSingleAddress extracts a single address from a pkscript or
|
|
// throws an error.
|
|
func ParseSingleAddress(
|
|
chainParams *chaincfg.Params,
|
|
script []byte,
|
|
) (txscript.ScriptClass, btcutil.Address, error) {
|
|
class, addresses, nRequired, err := txscript.ExtractPkScriptAddrs(script, chainParams)
|
|
if err != nil {
|
|
return 0, nil, fmt.Errorf("%w unable to extract script addresses", err)
|
|
}
|
|
|
|
if nRequired != 1 {
|
|
return 0, nil, fmt.Errorf("expecting 1 address, got %d", nRequired)
|
|
}
|
|
|
|
address := addresses[0]
|
|
|
|
return class, address, nil
|
|
}
|