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fix: Eth API: accept input data in call arguments under field 'input' (#11505)

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The correct name for this field is 'input' according to the Ethereum specs [0].
However, for the longest time, clients have been using 'data' and servers have been
lenient to accept both, preferring 'input' over 'data' when both appear.

Our lack of support for 'input' had gone unnoticed until go-ethereum decided
to adjust their ethclient implementation to issue eth_call and eth_estimateGas
requests with the 'input' field instead of 'data' [1]. This suddenly broke apps
using this client against Lotus' Eth API.

[0]: https://github.com/ethereum/execution-apis/blob/main/src/schemas/transaction.yaml#L33-L35
[1]: ethereum/go-ethereum#28078

Co-authored-by: raulk <raul.kripalani@gmail.com>
This commit is contained in:
Steven Allen 2024-01-06 15:42:52 -08:00 committed by GitHub
parent 1d75af73fa
commit 156a3a400c
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 45 additions and 4 deletions
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18
chain/types/ethtypes/eth_types.go
View File

@ -229,13 +229,25 @@ type EthCall struct {
}
func (c *EthCall) UnmarshalJSON(b []byte) error {
type TempEthCall EthCall
var params TempEthCall
type EthCallRaw EthCall // Avoid a recursive call.
type EthCallDecode struct {
// The field should be "input" by spec, but many clients use "data" so we support
// both, but prefer "input".
Input *EthBytes `json:"input"`
EthCallRaw
}
var params EthCallDecode
if err := json.Unmarshal(b, &params); err != nil {
return err
}
*c = EthCall(params)
// If input is specified, prefer it.
if params.Input != nil {
params.Data = *params.Input
}
*c = EthCall(params.EthCallRaw)
return nil
}

31
chain/types/ethtypes/eth_types_test.go
View File

@ -194,11 +194,40 @@ func TestMaskedIDInF4(t *testing.T) {
}
func TestUnmarshalEthCall(t *testing.T) {
data := `{"from":"0x4D6D86b31a112a05A473c4aE84afaF873f632325","to":"0xFe01CC39f5Ae8553D6914DBb9dC27D219fa22D7f","gas":"0x5","gasPrice":"0x6","value":"0x123","data":""}`
data := `{"from":"0x4D6D86b31a112a05A473c4aE84afaF873f632325","to":"0xFe01CC39f5Ae8553D6914DBb9dC27D219fa22D7f","gas":"0x5","gasPrice":"0x6","value":"0x123","data":"0xFF"}`
var c EthCall
err := c.UnmarshalJSON([]byte(data))
require.Nil(t, err)
require.EqualValues(t, []byte{0xff}, c.Data)
}
func TestUnmarshalEthCallInput(t *testing.T) {
data := `{"from":"0x4D6D86b31a112a05A473c4aE84afaF873f632325","to":"0xFe01CC39f5Ae8553D6914DBb9dC27D219fa22D7f","gas":"0x5","gasPrice":"0x6","value":"0x123","input":"0xFF"}`
var c EthCall
err := c.UnmarshalJSON([]byte(data))
require.Nil(t, err)
require.EqualValues(t, []byte{0xff}, c.Data)
}
func TestUnmarshalEthCallInputAndData(t *testing.T) {
data := `{"from":"0x4D6D86b31a112a05A473c4aE84afaF873f632325","to":"0xFe01CC39f5Ae8553D6914DBb9dC27D219fa22D7f","gas":"0x5","gasPrice":"0x6","value":"0x123","data":"0xFE","input":"0xFF"}`
var c EthCall
err := c.UnmarshalJSON([]byte(data))
require.Nil(t, err)
require.EqualValues(t, []byte{0xff}, c.Data)
}
func TestUnmarshalEthCallInputAndDataEmpty(t *testing.T) {
// Even if the input is empty, it should be used when specified.
data := `{"from":"0x4D6D86b31a112a05A473c4aE84afaF873f632325","to":"0xFe01CC39f5Ae8553D6914DBb9dC27D219fa22D7f","gas":"0x5","gasPrice":"0x6","value":"0x123","data":"0xFE","input":""}`
var c EthCall
err := c.UnmarshalJSON([]byte(data))
require.Nil(t, err)
require.EqualValues(t, []byte{}, c.Data)
}
func TestUnmarshalEthBytes(t *testing.T) {