From 522042fd1200fbdbf49c76e55b4bceeebb80a0f9 Mon Sep 17 00:00:00 2001
From: Ethan Buchman <ethan@coinculture.info>
Date: Tue, 12 Jun 2018 22:17:11 -0700
Subject: [PATCH] gaiadebug tool

---
 Makefile                       |   5 +-
 cmd/gaia/cmd/gaiadebug/main.go | 122 +++++++++++++++++++++++++++++++++
 2 files changed, 126 insertions(+), 1 deletion(-)
 create mode 100644 cmd/gaia/cmd/gaiadebug/main.go

diff --git a/Makefile b/Makefile
index d6444b0b62..c0d18c4a39 100644
--- a/Makefile
+++ b/Makefile
@@ -46,6 +46,9 @@ install_examples:
 	go install $(BUILD_FLAGS) ./examples/democoin/cmd/democoind
 	go install $(BUILD_FLAGS) ./examples/democoin/cmd/democli
 
+install_debug:
+	go install $(BUILD_FLAGS) ./cmd/gaia/cmd/gaiadebug
+
 dist:
 	@bash publish/dist.sh
 	@bash publish/publish.sh
@@ -157,4 +160,4 @@ remotenet-status:
 # To avoid unintended conflicts with file names, always add to .PHONY
 # unless there is a reason not to.
 # https://www.gnu.org/software/make/manual/html_node/Phony-Targets.html
-.PHONY: build build_examples install install_examples dist check_tools get_tools get_vendor_deps draw_deps test test_cli test_unit test_cover test_lint benchmark devdoc_init devdoc devdoc_save devdoc_update remotenet-start remotenet-stop remotenet-status
+.PHONY: build build_examples install install_examples install_debug dist check_tools get_tools get_vendor_deps draw_deps test test_cli test_unit test_cover test_lint benchmark devdoc_init devdoc devdoc_save devdoc_update remotenet-start remotenet-stop remotenet-status
diff --git a/cmd/gaia/cmd/gaiadebug/main.go b/cmd/gaia/cmd/gaiadebug/main.go
new file mode 100644
index 0000000000..ed5344bdd0
--- /dev/null
+++ b/cmd/gaia/cmd/gaiadebug/main.go
@@ -0,0 +1,122 @@
+package main
+
+import (
+	"bytes"
+	"encoding/base64"
+	"encoding/hex"
+	"encoding/json"
+	"fmt"
+	"os"
+
+	gaia "github.com/cosmos/cosmos-sdk/cmd/gaia/app"
+	"github.com/cosmos/cosmos-sdk/x/auth"
+	"github.com/spf13/cobra"
+	crypto "github.com/tendermint/go-crypto"
+)
+
+func init() {
+	rootCmd.AddCommand(txCmd)
+	rootCmd.AddCommand(pubkeyCmd)
+}
+
+var rootCmd = &cobra.Command{
+	Use:          "gaiadebug",
+	Short:        "Gaia debug tool",
+	SilenceUsage: true,
+}
+
+var txCmd = &cobra.Command{
+	Use:   "tx",
+	Short: "Decode a gaia tx from hex or base64",
+	RunE:  runTxCmd,
+}
+
+var pubkeyCmd = &cobra.Command{
+	Use:   "pubkey",
+	Short: "Decode a pubkey from hex or base64",
+	RunE:  runPubKeyCmd,
+}
+
+func runPubKeyCmd(cmd *cobra.Command, args []string) error {
+	if len(args) != 1 {
+		return fmt.Errorf("Expected single arg")
+	}
+
+	pubkeyString := args[0]
+
+	// try hex, then base64
+	pubkeyBytes, err := hex.DecodeString(pubkeyString)
+	if err != nil {
+		var err2 error
+		pubkeyBytes, err2 = base64.StdEncoding.DecodeString(pubkeyString)
+		if err2 != nil {
+			return fmt.Errorf(`Expected hex or base64. Got errors:
+			hex: %v,
+			base64: %v
+			`, err, err2)
+		}
+	}
+
+	cdc := gaia.MakeCodec()
+	var pubKey crypto.PubKeyEd25519
+	copy(pubKey[:], pubkeyBytes)
+	pubKeyJSONBytes, err := cdc.MarshalJSON(pubKey)
+	if err != nil {
+		return err
+	}
+	fmt.Println("Address:", pubKey.Address())
+	fmt.Printf("Hex: %X\n", pubkeyBytes)
+	fmt.Println("JSON (base64):", string(pubKeyJSONBytes))
+	return nil
+}
+
+func runTxCmd(cmd *cobra.Command, args []string) error {
+	if len(args) != 1 {
+		return fmt.Errorf("Expected single arg")
+	}
+
+	txString := args[0]
+
+	// try hex, then base64
+	txBytes, err := hex.DecodeString(txString)
+	if err != nil {
+		var err2 error
+		txBytes, err2 = base64.StdEncoding.DecodeString(txString)
+		if err2 != nil {
+			return fmt.Errorf(`Expected hex or base64. Got errors:
+			hex: %v,
+			base64: %v
+			`, err, err2)
+		}
+	}
+
+	var tx = auth.StdTx{}
+	cdc := gaia.MakeCodec()
+
+	err = cdc.UnmarshalBinary(txBytes, &tx)
+	if err != nil {
+		return err
+	}
+
+	bz, err := cdc.MarshalJSON(tx)
+	if err != nil {
+		return err
+	}
+
+	buf := bytes.NewBuffer([]byte{})
+	err = json.Indent(buf, bz, "", "  ")
+	if err != nil {
+		return err
+	}
+
+	fmt.Println(buf.String())
+	return nil
+}
+
+func main() {
+	err := rootCmd.Execute()
+	if err != nil {
+		os.Exit(1)
+	}
+	os.Exit(0)
+}