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loopin: public scope for ValidateLoopInContract

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Slyghtning 2024-09-26 11:42:44 +02:00
parent c11e90138b
commit 2b31a48323
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2 changed files with 19 additions and 5 deletions
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6
client.go
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@ -43,9 +43,13 @@ var (
ErrSwapAmountTooHigh = errors.New("swap amount too high")
// ErrExpiryTooFar is returned when the server proposes an expiry that
// is too soon for us.
// is too far in the future.
ErrExpiryTooFar = errors.New("swap expiry too far")
// ErrExpiryTooSoon is returned when the server proposes an expiry that
// is too soon.
ErrExpiryTooSoon = errors.New("swap expiry too soon")
// ErrInsufficientBalance indicates insufficient confirmed balance to
// publish a swap.
ErrInsufficientBalance = errors.New("insufficient confirmed balance")

18
loopin.go
View file

@ -38,6 +38,10 @@ var (
// getting us to lock up our funds to an arbitrary point in the future.
MaxLoopInAcceptDelta = int32(1500)
// MinLoopInExpiryDelta defines the minimum number of remaining blocks
// that we accept until htlc expiry path that opens up for us to sweep.
MinLoopInExpiryDelta = int32(100)
// MinLoopInPublishDelta defines the minimum number of remaining blocks
// until on-chain htlc expiry required to proceed to publishing the htlc
// tx. This value isn't critical, as we could even safely publish the
@ -248,7 +252,7 @@ func newLoopInSwap(globalCtx context.Context, cfg *swapConfig,
// Validate if the response parameters are outside our allowed range
// preventing us from continuing with a swap.
err = validateLoopInContract(currentHeight, swapResp)
err = ValidateLoopInContract(currentHeight, swapResp.expiry)
if err != nil {
return nil, err
}
@ -429,14 +433,20 @@ func resumeLoopInSwap(_ context.Context, cfg *swapConfig,
return swap, nil
}
// validateLoopInContract validates the contract parameters against our request.
func validateLoopInContract(height int32, response *newLoopInResponse) error {
// ValidateLoopInContract validates the contract parameters against our
// configured maximum values.
func ValidateLoopInContract(height int32, htlcExpiry int32) error {
// Verify that we are not forced to publish a htlc that locks up our
// funds for too long in case the server doesn't follow through.
if response.expiry-height > MaxLoopInAcceptDelta {
if htlcExpiry-height > MaxLoopInAcceptDelta {
return ErrExpiryTooFar
}
// Ensure that the expiry height is in the future.
if htlcExpiry < height+MinLoopInExpiryDelta {
return ErrExpiryTooSoon
}
return nil
}