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