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native: check that oracle request GAS IsInt64()

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We use int64 value down below, so check for IsInt64() while MinimumResponseGas
check still covers for values less than zero.
This commit is contained in:
Roman Khimov 2021-07-19 15:17:45 +03:00
parent 5f13de3a76
commit 79b1bf72aa
1 changed files with 2 additions and 2 deletions
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4
pkg/core/native/oracle.go
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@ -329,10 +329,10 @@ func (o *Oracle) request(ic *interop.Context, args []stackitem.Item) stackitem.I
// RequestInternal processes oracle request.
func (o *Oracle) RequestInternal(ic *interop.Context, url string, filter *string, cb string, userData stackitem.Item, gas *big.Int) error {
if len(url) > maxURLLength || (filter != nil && len(*filter) > maxFilterLength) || len(cb) > maxCallbackLength {
if len(url) > maxURLLength || (filter != nil && len(*filter) > maxFilterLength) || len(cb) > maxCallbackLength || !gas.IsInt64() {
return ErrBigArgument
}
if gas.Uint64() < MinimumResponseGas {
if gas.Int64() < MinimumResponseGas {
return ErrLowResponseGas
}
if strings.HasPrefix(cb, "_") {