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lnrpc+rpcserver: add remote reserve to openchannel request

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This commit is contained in:
Roei Erez
2022-09-29 12:32:28 +02:00
committed by Elle Mouton
parent 6467b0ee12
commit b6a24b52fe
4 changed files with 1935 additions and 1900 deletions
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41
rpcserver.go
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@ -1910,6 +1910,7 @@ func (r *rpcServer) parseOpenChannelReq(in *lnrpc.OpenChannelRequest,
remoteCsvDelay := uint16(in.RemoteCsvDelay)
maxValue := lnwire.MilliSatoshi(in.RemoteMaxValueInFlightMsat)
maxHtlcs := uint16(in.RemoteMaxHtlcs)
remoteChanReserve := btcutil.Amount(in.RemoteChanReserveSat)
globalFeatureSet := r.server.featureMgr.Get(feature.SetNodeAnn)
@ -1937,6 +1938,13 @@ func (r *rpcServer) parseOpenChannelReq(in *lnrpc.OpenChannelRequest,
channelFeeRate = &in.FeeRate
}
// Ensure that the remote channel reserve does not exceed 20% of the
// channel capacity.
if remoteChanReserve >= localFundingAmt/5 {
return nil, fmt.Errorf("remote channel reserve must be less " +
"than the %%20 of the channel capacity")
}
// Ensure that the user doesn't exceed the current soft-limit for
// channel size. If the funding amount is above the soft-limit, then
// we'll reject the request.
@ -2092,22 +2100,23 @@ func (r *rpcServer) parseOpenChannelReq(in *lnrpc.OpenChannelRequest,
// open a new channel. A stream is returned in place, this stream will
// be used to consume updates of the state of the pending channel.
return &funding.InitFundingMsg{
TargetPubkey: nodePubKey,
ChainHash: *r.cfg.ActiveNetParams.GenesisHash,
LocalFundingAmt: localFundingAmt,
BaseFee: channelBaseFee,
FeeRate: channelFeeRate,
PushAmt: lnwire.NewMSatFromSatoshis(remoteInitialBalance),
MinHtlcIn: minHtlcIn,
FundingFeePerKw: feeRate,
Private: in.Private,
RemoteCsvDelay: remoteCsvDelay,
MinConfs: minConfs,
ShutdownScript: script,
MaxValueInFlight: maxValue,
MaxHtlcs: maxHtlcs,
MaxLocalCsv: uint16(in.MaxLocalCsv),
ChannelType: channelType,
TargetPubkey: nodePubKey,
ChainHash: *r.cfg.ActiveNetParams.GenesisHash,
LocalFundingAmt: localFundingAmt,
BaseFee: channelBaseFee,
FeeRate: channelFeeRate,
PushAmt: lnwire.NewMSatFromSatoshis(remoteInitialBalance),
MinHtlcIn: minHtlcIn,
FundingFeePerKw: feeRate,
Private: in.Private,
RemoteCsvDelay: remoteCsvDelay,
RemoteChanReserve: remoteChanReserve,
MinConfs: minConfs,
ShutdownScript: script,
MaxValueInFlight: maxValue,
MaxHtlcs: maxHtlcs,
MaxLocalCsv: uint16(in.MaxLocalCsv),
ChannelType: channelType,
}, nil
}