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