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channel pair support

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callebtc
2022-07-09 00:57:28 +02:00
parent 49ee79c04c
commit 1377ccedcd
2 changed files with 48 additions and 11 deletions
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3
config.yaml.example
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@@ -28,6 +28,7 @@ forward-mode: "blacklist"
# List of channel IDs to whitelist or blacklist
forward-whitelist:
- "7143424x65537x0"
- "12320768x65536x0->7143424x65537x0"
forward-blacklist:
- "12320768x65536x0"
- "7929856x65537x1"
- "7929856x65537x1->12320768x65536x0"

56
htlcInterceptor.go
View File

@@ -4,6 +4,7 @@ import (
"context"
"errors"
"fmt"
"strings"
"sync"
"time"
@@ -149,25 +150,60 @@ func (app *app) interceptHtlcEvents(ctx context.Context, interceptor routerrpc.R
}
}
// htlcInterceptDecision implements the rules upon which the
// decision is made whether or not to relay an HTLC to the next
// peer.
// The decision is made based on the following rules:
// 1. Either use a whitelist (accept) or a blacklist (deny).
// 2. If a single channel ID is used (12320768x65536x0), check the incoming ID of the HTLC against the list.
// 3. If two channel IDs are used (7929856x65537x0->7143424x65537x0), check the incoming ID and the outgoing ID of the HTLC against the list.
func (app *app) htlcInterceptDecision(ctx context.Context, event *routerrpc.ForwardHtlcInterceptRequest, decision_chan chan bool) {
var accept bool
if Configuration.ForwardMode == "whitelist" {
switch Configuration.ForwardMode {
case "whitelist":
accept = false
for _, channel_id := range Configuration.ForwardWhitelist {
if parse_channelID(event.IncomingCircuitKey.ChanId) == channel_id {
accept = true
break
for _, forward_whitelist_entry := range Configuration.ForwardWhitelist {
if len(strings.Split(forward_whitelist_entry, "->")) == 2 {
// check if channel_id is actually from-to channel
split := strings.Split(forward_whitelist_entry, "->")
from_channel_id, to_channel_id := split[0], split[1]
if parse_channelID(event.IncomingCircuitKey.ChanId) == from_channel_id &&
parse_channelID(event.OutgoingRequestedChanId) == to_channel_id {
accept = true
break
}
} else {
// single entry
if parse_channelID(event.IncomingCircuitKey.ChanId) == forward_whitelist_entry {
accept = true
break
}
}
}
} else if Configuration.ForwardMode == "blacklist" {
case "blacklist":
accept = true
for _, channel_id := range Configuration.ForwardBlacklist {
if parse_channelID(event.IncomingCircuitKey.ChanId) == channel_id {
accept = false
break
for _, forward_whitelist_entry := range Configuration.ForwardWhitelist {
if len(strings.Split(forward_whitelist_entry, "->")) == 2 {
// check if channel_id is actually from-to channel
split := strings.Split(forward_whitelist_entry, "->")
from_channel_id, to_channel_id := split[0], split[1]
if parse_channelID(event.IncomingCircuitKey.ChanId) == from_channel_id &&
parse_channelID(event.OutgoingRequestedChanId) == to_channel_id {
accept = false
break
}
} else {
// single entry
if parse_channelID(event.IncomingCircuitKey.ChanId) == forward_whitelist_entry {
accept = false
break
}
}
}
default:
err := fmt.Errorf("unknown forward mode: %s", Configuration.ForwardMode)
panic(err)
}
decision_chan <- accept
}