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aminojson.go
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aminojson.go
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package aminojson
import (
"context"
"errors"
"fmt"
"google.golang.org/protobuf/reflect/protoregistry"
signingv1beta1 "cosmossdk.io/api/cosmos/tx/signing/v1beta1"
"cosmossdk.io/x/tx/decode"
"cosmossdk.io/x/tx/signing"
"cosmossdk.io/x/tx/signing/aminojson/internal/aminojsonpb"
)
// SignModeHandler implements the SIGN_MODE_LEGACY_AMINO_JSON signing mode.
type SignModeHandler struct {
fileResolver signing.ProtoFileResolver
typeResolver protoregistry.MessageTypeResolver
encoder Encoder
}
// SignModeHandlerOptions are the options for the SignModeHandler.
type SignModeHandlerOptions struct {
FileResolver signing.ProtoFileResolver
TypeResolver signing.TypeResolver
Encoder *Encoder
}
// NewSignModeHandler returns a new SignModeHandler.
func NewSignModeHandler(options SignModeHandlerOptions) *SignModeHandler {
h := &SignModeHandler{}
if options.FileResolver == nil {
h.fileResolver = protoregistry.GlobalFiles
} else {
h.fileResolver = options.FileResolver
}
if options.TypeResolver == nil {
h.typeResolver = protoregistry.GlobalTypes
} else {
h.typeResolver = options.TypeResolver
}
if options.Encoder == nil {
h.encoder = NewEncoder(EncoderOptions{
FileResolver: options.FileResolver,
TypeResolver: options.TypeResolver,
})
} else {
h.encoder = *options.Encoder
}
return h
}
// Mode implements the Mode method of the SignModeHandler interface.
func (h SignModeHandler) Mode() signingv1beta1.SignMode {
return signingv1beta1.SignMode_SIGN_MODE_LEGACY_AMINO_JSON
}
// GetSignBytes implements the GetSignBytes method of the SignModeHandler interface.
func (h SignModeHandler) GetSignBytes(_ context.Context, signerData signing.SignerData, txData signing.TxData) ([]byte, error) {
body := txData.Body
_, err := decode.RejectUnknownFields(
txData.BodyBytes, body.ProtoReflect().Descriptor(), false, h.fileResolver)
if err != nil {
return nil, err
}
if (len(body.ExtensionOptions) > 0) || (len(body.NonCriticalExtensionOptions) > 0) {
return nil, fmt.Errorf("%s does not support protobuf extension options: invalid request", h.Mode())
}
if signerData.Address == "" {
return nil, fmt.Errorf("got empty address in %s handler: invalid request", h.Mode())
}
// We set a convention that if the tipper signs with LEGACY_AMINO_JSON, then
// they sign over empty fees and 0 gas.
var fee *aminojsonpb.AminoSignFee
f := txData.AuthInfo.Fee
if f == nil {
return nil, errors.New("fee cannot be nil when tipper is not signer")
}
fee = &aminojsonpb.AminoSignFee{
Amount: f.Amount,
Gas: f.GasLimit,
Payer: f.Payer,
Granter: f.Granter,
}
signDoc := &aminojsonpb.AminoSignDoc{
AccountNumber: signerData.AccountNumber,
TimeoutHeight: body.TimeoutHeight,
ChainId: signerData.ChainID,
Sequence: signerData.Sequence,
Memo: body.Memo,
Msgs: txData.Body.Messages,
Fee: fee,
}
return h.encoder.Marshal(signDoc)
}
var _ signing.SignModeHandler = (*SignModeHandler)(nil)