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58 lines
1.5 KiB
Go
58 lines
1.5 KiB
Go
package chantools
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import (
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"encoding/hex"
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"fmt"
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"github.com/btcsuite/btcd/btcec"
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"github.com/lightningnetwork/lnd/channeldb"
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"github.com/lightningnetwork/lnd/keychain"
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)
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const (
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lndInternalDerivationPath = "m/1017'/0'/%d'/0/%d"
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)
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// dumpChanCfg is the information we want to dump from a channel configuration.
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// See `channeldb.ChannelConfig` for more information about the fields.
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type dumpChanCfg struct {
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channeldb.ChannelConstraints
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MultiSigKey dumpDescriptor
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RevocationBasePoint dumpDescriptor
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PaymentBasePoint dumpDescriptor
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DelayBasePoint dumpDescriptor
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HtlcBasePoint dumpDescriptor
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}
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type dumpDescriptor struct {
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Path string
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Pubkey string
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}
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func toDumpChanCfg(cfg channeldb.ChannelConfig) dumpChanCfg {
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return dumpChanCfg{
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ChannelConstraints: cfg.ChannelConstraints,
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MultiSigKey: toDumpDescriptor(cfg.MultiSigKey),
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RevocationBasePoint: toDumpDescriptor(cfg.RevocationBasePoint),
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PaymentBasePoint: toDumpDescriptor(cfg.PaymentBasePoint),
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DelayBasePoint: toDumpDescriptor(cfg.DelayBasePoint),
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HtlcBasePoint: toDumpDescriptor(cfg.HtlcBasePoint),
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}
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}
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func toDumpDescriptor(desc keychain.KeyDescriptor) dumpDescriptor {
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return dumpDescriptor{
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Path: fmt.Sprintf(
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lndInternalDerivationPath, desc.Family, desc.Index,
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),
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Pubkey: pubKeyToString(desc.PubKey),
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}
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}
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func pubKeyToString(pubkey *btcec.PublicKey) string {
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if pubkey == nil {
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return "<nil>"
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}
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return hex.EncodeToString(pubkey.SerializeCompressed())
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}
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