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counter: fix tx buffer overflow

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This commit is contained in:
Ethan Buchman
2016-11-23 18:22:22 -05:00
parent f4e97a5db1
commit e813b8c71d
1 changed files with 6 additions and 0 deletions
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example/counter/counter.go
+6
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@@ -30,6 +30,9 @@ func (app *CounterApplication) SetOption(key string, value string) (log string)
func (app *CounterApplication) AppendTx(tx []byte) types.Result {
if app.serial {
if len(tx) > 8 {
return types.ErrEncodingError.SetLog(Fmt("Max tx size is 8 bytes, got %d", len(tx)))
}
tx8 := make([]byte, 8)
copy(tx8[len(tx8)-len(tx):], tx)
txValue := binary.BigEndian.Uint64(tx8)
@@ -43,6 +46,9 @@ func (app *CounterApplication) AppendTx(tx []byte) types.Result {
func (app *CounterApplication) CheckTx(tx []byte) types.Result {
if app.serial {
if len(tx) > 8 {
return types.ErrEncodingError.SetLog(Fmt("Max tx size is 8 bytes, got %d", len(tx)))
}
tx8 := make([]byte, 8)
copy(tx8[len(tx8)-len(tx):], tx)
txValue := binary.BigEndian.Uint64(tx8)