lnd: add PrevoutInput Fetcher for SignDesc

ziggie1984 · ziggie1984 · commit 49632cce5a6c · 2023-04-20T14:18:03.000+02:00
Currently chantools crashes when trying to get the force-close
summary because the new btcd version needs a prevoutInput fetcher
otherwise we get a nil error.
diff --git a/lnd/channel.go b/lnd/channel.go
@@ -45,6 +45,9 @@ func (lc *LightningChannel) CreateSignDesc() error {
 		},
 		HashType:   txscript.SigHashAll,
 		InputIndex: 0,
+		PrevOutputFetcher: txscript.NewCannedPrevOutputFetcher(
+			fundingPkScript, int64(lc.ChannelState.Capacity),
+		),
 	}
 
 	return nil

Original file line number	Diff line number	Diff line change
`@@ -45,6 +45,9 @@ func (lc *LightningChannel) CreateSignDesc() error {`
`45`	`45`	`},`
`46`	`46`	`HashType: txscript.SigHashAll,`
`47`	`47`	`InputIndex: 0,`
	`48`	`+ PrevOutputFetcher: txscript.NewCannedPrevOutputFetcher(`
	`49`	`+ fundingPkScript, int64(lc.ChannelState.Capacity),`
	`50`	`+ ),`
`48`	`51`	`}`
`49`	`52`
`50`	`53`	`return nil`