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63 lines
1.7 KiB
Go
63 lines
1.7 KiB
Go
package main
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import (
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"fmt"
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"path"
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"github.com/btcsuite/btcutil/hdkeychain"
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"github.com/guggero/chantools/lnd"
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"github.com/lightningnetwork/lnd/chanbackup"
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"github.com/lightningnetwork/lnd/channeldb"
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)
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type chanBackupCommand struct {
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RootKey string `long:"rootkey" description:"BIP32 HD root key of the wallet that should be used to create the backup. Leave empty to prompt for lnd 24 word aezeed."`
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ChannelDB string `long:"channeldb" description:"The lnd channel.db file to create the backup from."`
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MultiFile string `long:"multi_file" description:"The lnd channel.backup file to create."`
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}
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func (c *chanBackupCommand) Execute(_ []string) error {
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setupChainParams(cfg)
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var (
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extendedKey *hdkeychain.ExtendedKey
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err error
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)
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// Check that root key is valid or fall back to console input.
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switch {
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case c.RootKey != "":
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extendedKey, err = hdkeychain.NewKeyFromString(c.RootKey)
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default:
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extendedKey, _, err = lnd.ReadAezeedFromTerminal(chainParams)
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}
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if err != nil {
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return fmt.Errorf("error reading root key: %v", err)
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}
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// Check that we have a backup file.
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if c.MultiFile == "" {
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return fmt.Errorf("backup file is required")
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}
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// Check that we have a channel DB.
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if c.ChannelDB == "" {
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return fmt.Errorf("channel DB is required")
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}
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db, err := channeldb.Open(
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path.Dir(c.ChannelDB), path.Base(c.ChannelDB),
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channeldb.OptionSetSyncFreelist(true),
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channeldb.OptionReadOnly(true),
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)
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if err != nil {
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return fmt.Errorf("error opening rescue DB: %v", err)
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}
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multiFile := chanbackup.NewMultiFile(c.MultiFile)
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keyRing := &lnd.HDKeyRing{
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ExtendedKey: extendedKey,
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ChainParams: chainParams,
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}
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return lnd.CreateChannelBackup(db, multiFile, keyRing)
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}
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