feat: add customized Ledger support (#12935)

client/cmd.go

@@ -258,7 +258,7 @@ func readTxCommandFlags(clientCtx Context, flagSet *pflag.FlagSet) (Context, err
 		// If the `from` signer account is a ledger key, we need to use
 		// SIGN_MODE_AMINO_JSON, because ledger doesn't support proto yet.
 		// ref: https://github.com/cosmos/cosmos-sdk/issues/8109
-		if keyType == keyring.TypeLedger && clientCtx.SignModeStr != flags.SignModeLegacyAminoJSON {
+		if keyType == keyring.TypeLedger && clientCtx.SignModeStr != flags.SignModeLegacyAminoJSON && !clientCtx.LedgerHasProtobuf {
 			fmt.Println("Default sign-mode 'direct' not supported by Ledger, using sign-mode 'amino-json'.")
 			clientCtx = clientCtx.WithSignModeStr(flags.SignModeLegacyAminoJSON)
 		}

client/context.go

@@ -53,6 +53,7 @@ type Context struct {
 	FeePayer          sdk.AccAddress
 	FeeGranter        sdk.AccAddress
 	Viper             *viper.Viper
+	LedgerHasProtobuf bool
 	PreprocessTxHook  PreprocessTxFn
 
 	// IsAux is true when the signer is an auxiliary signer (e.g. the tipper).
@@ -266,6 +267,13 @@ func (ctx Context) WithAux(isAux bool) Context {
 	return ctx
 }
 
+// WithLedgerHasProto returns the context with the provided boolean value, indicating
+// whether the target Ledger application can support Protobuf payloads.
+func (ctx Context) WithLedgerHasProtobuf(val bool) Context {
+	ctx.LedgerHasProtobuf = val
+	return ctx
+}
+
 // WithPreprocessTxHook returns the context with the provided preprocessing hook, which
 // enables chains to preprocess the transaction using the builder.
 func (ctx Context) WithPreprocessTxHook(preprocessFn PreprocessTxFn) Context {