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mobile: don't retain transient []byte in CallMsg.SetData (#14804)

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* mobile: don't retain transient []byte in CallMsg.SetData

Go mobile doesn't copy []byte parameters, for performance and to allow
writes to the byte array be reflected in the native byte array.
Unfortunately, that means []byte arguments are only valid during the
call it is being passed into.

CallMsg.SetData retains such a byte array. Copy it instead

Fixes #14675

* mobile: copy all []byte arguments from gomobile

To avoid subtle errors when accidentially retaining an otherwise
transient byte slice coming from gomobile, copy all byte slices before
use.

* mobile: replace copySlice with common.CopyBytes
This commit is contained in:
Elias Naur
2017-07-17 14:25:46 +02:00
committed by Péter Szilágyi
parent cf5d4b5541
commit 23c6fcdbe8
7 changed files with 21 additions and 17 deletions
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2
mobile/ethereum.go
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@ -64,7 +64,7 @@ func (msg *CallMsg) SetFrom(address *Address) { msg.msg.From = address.address
func (msg *CallMsg) SetGas(gas int64) { msg.msg.Gas = big.NewInt(gas) }
func (msg *CallMsg) SetGasPrice(price *BigInt) { msg.msg.GasPrice = price.bigint }
func (msg *CallMsg) SetValue(value *BigInt) { msg.msg.Value = value.bigint }
func (msg *CallMsg) SetData(data []byte) { msg.msg.Data = data }
func (msg *CallMsg) SetData(data []byte) { msg.msg.Data = common.CopyBytes(data) }
func (msg *CallMsg) SetTo(address *Address) {
if address == nil {
msg.msg.To = nil