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direct_aux.go
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direct_aux.go
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package tx
import (
"fmt"
"strings"
errorsmod "cosmossdk.io/errors"
codectypes "github.com/cosmos/cosmos-sdk/codec/types"
sdk "github.com/cosmos/cosmos-sdk/types"
sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
types "github.com/cosmos/cosmos-sdk/types/tx"
signingtypes "github.com/cosmos/cosmos-sdk/types/tx/signing"
"github.com/cosmos/cosmos-sdk/x/auth/signing"
)
var _ signing.SignModeHandler = signModeDirectAuxHandler{}
// signModeDirectAuxHandler defines the SIGN_MODE_DIRECT_AUX SignModeHandler
type signModeDirectAuxHandler struct{}
// DefaultMode implements SignModeHandler.DefaultMode
func (signModeDirectAuxHandler) DefaultMode() signingtypes.SignMode {
return signingtypes.SignMode_SIGN_MODE_DIRECT_AUX
}
// Modes implements SignModeHandler.Modes
func (signModeDirectAuxHandler) Modes() []signingtypes.SignMode {
return []signingtypes.SignMode{signingtypes.SignMode_SIGN_MODE_DIRECT_AUX}
}
// GetSignBytes implements SignModeHandler.GetSignBytes
func (signModeDirectAuxHandler) GetSignBytes(
mode signingtypes.SignMode, data signing.SignerData, tx sdk.Tx,
) ([]byte, error) {
if mode != signingtypes.SignMode_SIGN_MODE_DIRECT_AUX {
return nil, fmt.Errorf("expected %s, got %s", signingtypes.SignMode_SIGN_MODE_DIRECT_AUX, mode)
}
protoTx, ok := tx.(*wrapper)
if !ok {
return nil, fmt.Errorf("can only handle a protobuf Tx, got %T", tx)
}
pkAny, err := codectypes.NewAnyWithValue(data.PubKey)
if err != nil {
return nil, err
}
addr := data.Address
if addr == "" {
return nil, errorsmod.Wrapf(sdkerrors.ErrInvalidRequest, "got empty address in %s handler", signingtypes.SignMode_SIGN_MODE_DIRECT_AUX)
}
feePayer := protoTx.FeePayer()
// Fee payer cannot use SIGN_MODE_DIRECT_AUX, because SIGN_MODE_DIRECT_AUX
// does not sign over fees, which would create malleability issues.
if strings.EqualFold(sdk.AccAddress(feePayer).String(), data.Address) {
return nil, sdkerrors.ErrUnauthorized.Wrapf("fee payer %s cannot sign with %s", sdk.AccAddress(feePayer).String(), signingtypes.SignMode_SIGN_MODE_DIRECT_AUX)
}
signDocDirectAux := types.SignDocDirectAux{
BodyBytes: protoTx.getBodyBytes(),
ChainId: data.ChainID,
AccountNumber: data.AccountNumber,
Sequence: data.Sequence,
Tip: protoTx.tx.AuthInfo.Tip,
PublicKey: pkAny,
}
return signDocDirectAux.Marshal()
}