mirror of https://github.com/guggero/chantools
parent
a01dd32e55
commit
083453ef5d
@ -0,0 +1,202 @@
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package main
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import (
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"fmt"
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"net"
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"strconv"
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"strings"
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"time"
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"github.com/btcsuite/btcd/chaincfg/chainhash"
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"github.com/btcsuite/btcd/connmgr"
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"github.com/btcsuite/btcd/wire"
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"github.com/guggero/chantools/btc"
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"github.com/guggero/chantools/lnd"
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"github.com/lightningnetwork/lnd/brontide"
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"github.com/lightningnetwork/lnd/keychain"
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"github.com/lightningnetwork/lnd/lncfg"
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"github.com/lightningnetwork/lnd/lnwire"
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"github.com/lightningnetwork/lnd/tor"
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"github.com/spf13/cobra"
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)
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var (
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dialTimeout = time.Minute
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)
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type triggerForceCloseCommand struct {
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Peer string
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ChannelPoint string
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APIURL string
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rootKey *rootKey
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cmd *cobra.Command
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}
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func newTriggerForceCloseCommand() *cobra.Command {
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cc := &triggerForceCloseCommand{}
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cc.cmd = &cobra.Command{
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Use: "triggerforceclose",
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Short: "Connect to a peer and send a custom message to " +
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"trigger a force close of the specified channel",
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Example: `chantools triggerforceclose \
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--peer 03abce...@xx.yy.zz.aa:9735 \
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--channel_point abcdef01234...:x`,
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RunE: cc.Execute,
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}
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cc.cmd.Flags().StringVar(
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&cc.Peer, "peer", "", "remote peer address "+
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"(<pubkey>@<host>[:<port>])",
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)
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cc.cmd.Flags().StringVar(
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&cc.ChannelPoint, "channel_point", "", "funding transaction "+
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"outpoint of the channel to trigger the force close "+
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"of (<txid>:<txindex>)",
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)
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cc.cmd.Flags().StringVar(
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&cc.APIURL, "apiurl", defaultAPIURL, "API URL to use (must "+
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"be esplora compatible)",
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)
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cc.rootKey = newRootKey(cc.cmd, "deriving the identity key")
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return cc.cmd
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}
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func (c *triggerForceCloseCommand) Execute(_ *cobra.Command, _ []string) error {
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extendedKey, err := c.rootKey.read()
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if err != nil {
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return fmt.Errorf("error reading root key: %w", err)
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}
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identityPath := lnd.IdentityPath(chainParams)
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child, pubKey, _, err := lnd.DeriveKey(
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extendedKey, identityPath, chainParams,
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)
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if err != nil {
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return fmt.Errorf("could not derive identity key: %w", err)
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}
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identityPriv, err := child.ECPrivKey()
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if err != nil {
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return fmt.Errorf("could not get identity private key: %w", err)
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}
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identityECDH := &keychain.PrivKeyECDH{
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PrivKey: identityPriv,
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}
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peerAddr, err := lncfg.ParseLNAddressString(
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c.Peer, "9735", net.ResolveTCPAddr,
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)
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if err != nil {
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return fmt.Errorf("error parsing peer address: %w", err)
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}
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outPoint, err := parseOutPoint(c.ChannelPoint)
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if err != nil {
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return fmt.Errorf("error parsing channel point: %w", err)
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}
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channelID := lnwire.NewChanIDFromOutPoint(outPoint)
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conn, err := noiseDial(
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identityECDH, peerAddr, &tor.ClearNet{}, dialTimeout,
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)
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if err != nil {
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return fmt.Errorf("error dialing peer: %w", err)
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}
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log.Infof("Attempting to connect to peer %x, dial timeout is %v",
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pubKey.SerializeCompressed(), dialTimeout)
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req := &connmgr.ConnReq{
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Addr: peerAddr,
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Permanent: false,
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}
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p, err := lnd.ConnectPeer(conn, req, chainParams, identityECDH)
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if err != nil {
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return fmt.Errorf("error connecting to peer: %w", err)
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}
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log.Infof("Connection established to peer %x",
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pubKey.SerializeCompressed())
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// We'll wait until the peer is active.
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select {
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case <-p.ActiveSignal():
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case <-p.QuitSignal():
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return fmt.Errorf("peer %x disconnected",
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pubKey.SerializeCompressed())
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}
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// Channel ID (32 byte) + u16 for the data length (which will be 0).
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data := make([]byte, 34)
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copy(data[:32], channelID[:])
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log.Infof("Sending channel error message to peer to trigger force "+
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"close of channel %v", c.ChannelPoint)
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_ = lnwire.SetCustomOverrides([]uint16{lnwire.MsgError})
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msg, err := lnwire.NewCustom(lnwire.MsgError, data)
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if err != nil {
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return err
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}
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err = p.SendMessageLazy(true, msg)
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if err != nil {
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return fmt.Errorf("error sending message: %w", err)
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}
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log.Infof("Message sent, waiting for force close transaction to " +
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"appear in mempool")
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api := &btc.ExplorerAPI{BaseURL: c.APIURL}
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channelAddress, err := api.Address(c.ChannelPoint)
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if err != nil {
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return fmt.Errorf("error getting channel address: %w", err)
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}
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spends, err := api.Spends(channelAddress)
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if err != nil {
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return fmt.Errorf("error getting spends: %w", err)
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}
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for len(spends) == 0 {
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log.Infof("No spends found yet, waiting 5 seconds...")
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time.Sleep(5 * time.Second)
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spends, err = api.Spends(channelAddress)
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if err != nil {
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return fmt.Errorf("error getting spends: %w", err)
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}
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}
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log.Infof("Found force close transaction %v", spends[0].TXID)
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log.Infof("You can now use the sweepremoteclosed command to sweep " +
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"the funds from the channel")
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return nil
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}
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func noiseDial(idKey keychain.SingleKeyECDH, lnAddr *lnwire.NetAddress,
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netCfg tor.Net, timeout time.Duration) (*brontide.Conn, error) {
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return brontide.Dial(idKey, lnAddr, timeout, netCfg.Dial)
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}
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func parseOutPoint(s string) (*wire.OutPoint, error) {
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split := strings.Split(s, ":")
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if len(split) != 2 || len(split[0]) == 0 || len(split[1]) == 0 {
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return nil, fmt.Errorf("invalid channel point format: %v", s)
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}
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index, err := strconv.ParseInt(split[1], 10, 64)
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if err != nil {
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return nil, fmt.Errorf("unable to decode output index: %v", err)
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}
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txid, err := chainhash.NewHashFromStr(split[0])
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if err != nil {
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return nil, fmt.Errorf("unable to parse hex string: %v", err)
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}
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return &wire.OutPoint{
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Hash: *txid,
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Index: uint32(index),
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}, nil
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}
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@ -0,0 +1,38 @@
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## chantools triggerforceclose
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Connect to a peer and send a custom message to trigger a force close of the specified channel
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```
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chantools triggerforceclose [flags]
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```
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### Examples
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```
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chantools triggerforceclose \
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--peer 03abce...@xx.yy.zz.aa:9735 \
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--channel_point abcdef01234...:x
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```
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### Options
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```
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--apiurl string API URL to use (must be esplora compatible) (default "https://blockstream.info/api")
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--bip39 read a classic BIP39 seed and passphrase from the terminal instead of asking for lnd seed format or providing the --rootkey flag
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--channel_point string funding transaction outpoint of the channel to trigger the force close of (<txid>:<txindex>)
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-h, --help help for triggerforceclose
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--peer string remote peer address (<pubkey>@<host>[:<port>])
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--rootkey string BIP32 HD root key of the wallet to use for deriving the identity key; leave empty to prompt for lnd 24 word aezeed
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```
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### Options inherited from parent commands
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```
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-r, --regtest Indicates if regtest parameters should be used
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-t, --testnet Indicates if testnet parameters should be used
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```
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### SEE ALSO
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* [chantools](chantools.md) - Chantools helps recover funds from lightning channels
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@ -0,0 +1,235 @@
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package lnd
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import (
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"fmt"
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"os"
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"time"
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"github.com/btcsuite/btcd/btcec/v2"
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"github.com/btcsuite/btcd/btcec/v2/ecdsa"
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"github.com/btcsuite/btcd/chaincfg"
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"github.com/btcsuite/btcd/connmgr"
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"github.com/lightningnetwork/lnd/aliasmgr"
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"github.com/lightningnetwork/lnd/brontide"
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"github.com/lightningnetwork/lnd/channeldb"
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"github.com/lightningnetwork/lnd/discovery"
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"github.com/lightningnetwork/lnd/feature"
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"github.com/lightningnetwork/lnd/htlcswitch"
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"github.com/lightningnetwork/lnd/htlcswitch/hodl"
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"github.com/lightningnetwork/lnd/keychain"
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"github.com/lightningnetwork/lnd/lncfg"
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"github.com/lightningnetwork/lnd/lnpeer"
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"github.com/lightningnetwork/lnd/lntest/mock"
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"github.com/lightningnetwork/lnd/lnwallet"
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"github.com/lightningnetwork/lnd/lnwallet/chainfee"
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"github.com/lightningnetwork/lnd/lnwire"
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"github.com/lightningnetwork/lnd/netann"
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"github.com/lightningnetwork/lnd/peer"
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"github.com/lightningnetwork/lnd/pool"
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"github.com/lightningnetwork/lnd/queue"
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"github.com/lightningnetwork/lnd/routing/route"
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"github.com/lightningnetwork/lnd/ticker"
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)
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const (
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defaultChannelCommitBatchSize = 10
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defaultCoopCloseTargetConfs = 6
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)
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var (
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chanEnableTimeout = 19 * time.Minute
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defaultChannelCommitInterval = 50 * time.Millisecond
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defaultPendingCommitInterval = 1 * time.Minute
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)
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func ConnectPeer(conn *brontide.Conn, connReq *connmgr.ConnReq,
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netParams *chaincfg.Params,
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identityECDH keychain.SingleKeyECDH) (*peer.Brontide, error) {
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featureMgr, err := feature.NewManager(feature.Config{})
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if err != nil {
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return nil, err
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}
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initFeatures := featureMgr.Get(feature.SetInit)
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legacyFeatures := featureMgr.Get(feature.SetLegacyGlobal)
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addr := conn.RemoteAddr()
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pubKey := conn.RemotePub()
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peerAddr := &lnwire.NetAddress{
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IdentityKey: pubKey,
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Address: addr,
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ChainNet: netParams.Net,
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}
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errBuffer, err := queue.NewCircularBuffer(500)
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if err != nil {
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return nil, err
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}
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pongBuf := make([]byte, lnwire.MaxPongBytes)
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writeBufferPool := pool.NewWriteBuffer(
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pool.DefaultWriteBufferGCInterval,
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pool.DefaultWriteBufferExpiryInterval,
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)
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writePool := pool.NewWrite(
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writeBufferPool, lncfg.DefaultWriteWorkers,
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pool.DefaultWorkerTimeout,
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)
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readBufferPool := pool.NewReadBuffer(
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pool.DefaultReadBufferGCInterval,
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pool.DefaultReadBufferExpiryInterval,
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)
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readPool := pool.NewRead(
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readBufferPool, lncfg.DefaultWriteWorkers,
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pool.DefaultWorkerTimeout,
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)
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commitFee := chainfee.SatPerKVByte(
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lnwallet.DefaultAnchorsCommitMaxFeeRateSatPerVByte * 1000,
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)
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if err := writePool.Start(); err != nil {
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return nil, fmt.Errorf("unable to start write pool: %v", err)
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}
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if err := readPool.Start(); err != nil {
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return nil, fmt.Errorf("unable to start read pool: %v", err)
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}
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channelDB, err := channeldb.Open(os.TempDir())
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if err != nil {
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return nil, err
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}
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gossiper := discovery.New(discovery.Config{
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ChainHash: *netParams.GenesisHash,
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Broadcast: func(skips map[route.Vertex]struct{},
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msg ...lnwire.Message) error {
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|
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return nil
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},
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NotifyWhenOnline: func(peerPubKey [33]byte,
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peerChan chan<- lnpeer.Peer) {
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|
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},
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NotifyWhenOffline: func(peerPubKey [33]byte) <-chan struct{} {
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return make(chan struct{})
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},
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SelfNodeAnnouncement: func(
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|
refresh bool) (lnwire.NodeAnnouncement, error) {
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|
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return lnwire.NodeAnnouncement{}, nil
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},
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ProofMatureDelta: 0,
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TrickleDelay: time.Millisecond * 50,
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RetransmitTicker: ticker.New(time.Minute * 30),
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RebroadcastInterval: time.Hour * 24,
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RotateTicker: ticker.New(discovery.DefaultSyncerRotationInterval),
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HistoricalSyncTicker: ticker.New(discovery.DefaultHistoricalSyncInterval),
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NumActiveSyncers: 0,
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MinimumBatchSize: 10,
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SubBatchDelay: discovery.DefaultSubBatchDelay,
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IgnoreHistoricalFilters: true,
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PinnedSyncers: make(map[route.Vertex]struct{}),
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MaxChannelUpdateBurst: discovery.DefaultMaxChannelUpdateBurst,
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ChannelUpdateInterval: discovery.DefaultChannelUpdateInterval,
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IsAlias: aliasmgr.IsAlias,
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SignAliasUpdate: func(u *lnwire.ChannelUpdate) (*ecdsa.Signature, error) {
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return nil, fmt.Errorf("unimplemented")
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},
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FindBaseByAlias: func(alias lnwire.ShortChannelID) (lnwire.ShortChannelID, error) {
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return lnwire.ShortChannelID{}, fmt.Errorf("unimplemented")
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},
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GetAlias: func(id lnwire.ChannelID) (lnwire.ShortChannelID, error) {
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return lnwire.ShortChannelID{}, fmt.Errorf("unimplemented")
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},
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FindChannel: func(node *btcec.PublicKey,
|
||||||
|
chanID lnwire.ChannelID) (*channeldb.OpenChannel, error) {
|
||||||
|
|
||||||
|
return nil, fmt.Errorf("unimplemented")
|
||||||
|
},
|
||||||
|
}, &keychain.KeyDescriptor{
|
||||||
|
KeyLocator: keychain.KeyLocator{},
|
||||||
|
PubKey: identityECDH.PubKey(),
|
||||||
|
})
|
||||||
|
|
||||||
|
pCfg := peer.Config{
|
||||||
|
Conn: conn,
|
||||||
|
ConnReq: connReq,
|
||||||
|
Addr: peerAddr,
|
||||||
|
Inbound: false,
|
||||||
|
Features: initFeatures,
|
||||||
|
LegacyFeatures: legacyFeatures,
|
||||||
|
OutgoingCltvRejectDelta: lncfg.DefaultOutgoingCltvRejectDelta,
|
||||||
|
ChanActiveTimeout: chanEnableTimeout,
|
||||||
|
ErrorBuffer: errBuffer,
|
||||||
|
WritePool: writePool,
|
||||||
|
ReadPool: readPool,
|
||||||
|
ChannelDB: channelDB.ChannelStateDB(),
|
||||||
|
AuthGossiper: gossiper,
|
||||||
|
ChainNotifier: &mock.ChainNotifier{},
|
||||||
|
DisconnectPeer: func(key *btcec.PublicKey) error {
|
||||||
|
fmt.Printf("Peer %x disconnected\n",
|
||||||
|
key.SerializeCompressed())
|
||||||
|
return nil
|
||||||
|
},
|
||||||
|
GenNodeAnnouncement: func(b bool,
|
||||||
|
modifier ...netann.NodeAnnModifier) (
|
||||||
|
lnwire.NodeAnnouncement, error) {
|
||||||
|
|
||||||
|
return lnwire.NodeAnnouncement{},
|
||||||
|
fmt.Errorf("unimplemented")
|
||||||
|
},
|
||||||
|
|
||||||
|
PongBuf: pongBuf,
|
||||||
|
|
||||||
|
PrunePersistentPeerConnection: func(bytes [33]byte) {},
|
||||||
|
|
||||||
|
FetchLastChanUpdate: func(id lnwire.ShortChannelID) (
|
||||||
|
*lnwire.ChannelUpdate, error) {
|
||||||
|
|
||||||
|
return nil, fmt.Errorf("unimplemented")
|
||||||
|
},
|
||||||
|
|
||||||
|
Hodl: &hodl.Config{},
|
||||||
|
UnsafeReplay: false,
|
||||||
|
MaxOutgoingCltvExpiry: htlcswitch.DefaultMaxOutgoingCltvExpiry,
|
||||||
|
MaxChannelFeeAllocation: htlcswitch.DefaultMaxLinkFeeAllocation,
|
||||||
|
CoopCloseTargetConfs: defaultCoopCloseTargetConfs,
|
||||||
|
MaxAnchorsCommitFeeRate: commitFee.FeePerKWeight(),
|
||||||
|
ChannelCommitInterval: defaultChannelCommitInterval,
|
||||||
|
PendingCommitInterval: defaultPendingCommitInterval,
|
||||||
|
ChannelCommitBatchSize: defaultChannelCommitBatchSize,
|
||||||
|
HandleCustomMessage: func(peer [33]byte,
|
||||||
|
msg *lnwire.Custom) error {
|
||||||
|
|
||||||
|
fmt.Printf("Received custom message from %x: %v\n",
|
||||||
|
peer[:], msg)
|
||||||
|
return nil
|
||||||
|
},
|
||||||
|
GetAliases: func(
|
||||||
|
base lnwire.ShortChannelID) []lnwire.ShortChannelID {
|
||||||
|
|
||||||
|
return nil
|
||||||
|
},
|
||||||
|
RequestAlias: func() (lnwire.ShortChannelID, error) {
|
||||||
|
return lnwire.ShortChannelID{}, nil
|
||||||
|
},
|
||||||
|
AddLocalAlias: func(alias, base lnwire.ShortChannelID,
|
||||||
|
gossip bool) error {
|
||||||
|
|
||||||
|
return nil
|
||||||
|
},
|
||||||
|
Quit: make(chan struct{}),
|
||||||
|
}
|
||||||
|
|
||||||
|
copy(pCfg.PubKeyBytes[:], peerAddr.IdentityKey.SerializeCompressed())
|
||||||
|
copy(pCfg.ServerPubKey[:], identityECDH.PubKey().SerializeCompressed())
|
||||||
|
|
||||||
|
p := peer.NewBrontide(pCfg)
|
||||||
|
if err := p.Start(); err != nil {
|
||||||
|
return nil, err
|
||||||
|
}
|
||||||
|
|
||||||
|
return p, nil
|
||||||
|
}
|
Loading…
Reference in New Issue