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fix(ics27): check packet data length explicitly over nil check #1882

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merged 3 commits into from
Aug 5, 2022
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fix(ics27): check packet data length explicitly over nil check #1882

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faca835
using len check in favour of nil check for interchain account packet …
damiannolan Aug 4, 2022
4630fff
adding changelog
damiannolan Aug 4, 2022
867b47d
updating changelog
damiannolan Aug 4, 2022
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2 changes: 2 additions & 0 deletions CHANGELOG.md
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Expand Up @@ -64,6 +64,8 @@ Ref: https://keepachangelog.com/en/1.0.0/

### State Machine Breaking

* (apps/27-interchain-accounts) [\#1882](https://github.com/cosmos/ibc-go/pull/1882) Explicitly check length of interchain account packet data in favour of nil check.

### Improvements

* (linting) [\#1418](https://github.com/cosmos/ibc-go/pull/1418) Fix linting errors, resulting compatiblity with go1.18 linting style, golangci-lint 1.46.2 and the revivie linter. This caused breaking changes in core/04-channel, core/ante, and the testing library.
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2 changes: 1 addition & 1 deletion modules/apps/27-interchain-accounts/types/packet.go
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Expand Up @@ -16,7 +16,7 @@ func (iapd InterchainAccountPacketData) ValidateBasic() error {
return sdkerrors.Wrap(ErrInvalidOutgoingData, "packet data type cannot be unspecified")
}

if iapd.Data == nil {
if len(iapd.Data) == 0 {
return sdkerrors.Wrap(ErrInvalidOutgoingData, "packet data cannot be empty")
}

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9 changes: 9 additions & 0 deletions modules/apps/27-interchain-accounts/types/packet_test.go
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Expand Up @@ -40,6 +40,15 @@ func (suite *TypesTestSuite) TestValidateBasic() {
},
{
"empty data",
types.InterchainAccountPacketData{
Type: types.EXECUTE_TX,
Data: []byte{},
Memo: "memo",
},
false,
},
{
"nil data",
types.InterchainAccountPacketData{
Type: types.EXECUTE_TX,
Data: nil,
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