github.com/core-coin/go-core/v2@v2.1.9/cmd/xcbkey/inspect.go (about)

     1  // Copyright 2017 by the Authors
     2  // This file is part of go-core.
     3  //
     4  // go-core is free software: you can redistribute it and/or modify
     5  // it under the terms of the GNU General Public License as published by
     6  // the Free Software Foundation, either version 3 of the License, or
     7  // (at your option) any later version.
     8  //
     9  // go-core is distributed in the hope that it will be useful,
    10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
    11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    12  // GNU General Public License for more details.
    13  //
    14  // You should have received a copy of the GNU General Public License
    15  // along with go-core. If not, see <http://www.gnu.org/licenses/>.
    16  
    17  package main
    18  
    19  import (
    20  	"encoding/hex"
    21  	"fmt"
    22  	"io/ioutil"
    23  
    24  	"gopkg.in/urfave/cli.v1"
    25  
    26  	"github.com/core-coin/go-core/v2/accounts/keystore"
    27  	"github.com/core-coin/go-core/v2/cmd/utils"
    28  	"github.com/core-coin/go-core/v2/common"
    29  	"github.com/core-coin/go-core/v2/crypto"
    30  )
    31  
    32  type outputInspect struct {
    33  	Address    string
    34  	PublicKey  string
    35  	PrivateKey string
    36  }
    37  
    38  var commandInspect = cli.Command{
    39  	Name:      "inspect",
    40  	Usage:     "inspect a keyfile",
    41  	ArgsUsage: "<keyfile>",
    42  	Description: `
    43  Print various information about the keyfile.
    44  
    45  Private key information can be printed by using the --private flag;
    46  make sure to use this feature with great caution!`,
    47  	Flags: []cli.Flag{
    48  		passphraseFlag,
    49  		jsonFlag,
    50  		cli.BoolFlag{
    51  			Name:  "private",
    52  			Usage: "include the private key in the output",
    53  		},
    54  		utils.NetworkIdFlag,
    55  	},
    56  	Action: func(ctx *cli.Context) error {
    57  		if ctx.IsSet(utils.NetworkIdFlag.Name) {
    58  			common.DefaultNetworkID = common.NetworkID(ctx.Uint64(utils.NetworkIdFlag.Name))
    59  		}
    60  
    61  		keyfilepath := ctx.Args().First()
    62  
    63  		// Read key from file.
    64  		keyjson, err := ioutil.ReadFile(keyfilepath)
    65  		if err != nil {
    66  			utils.Fatalf("Failed to read the keyfile at '%s': %v", keyfilepath, err)
    67  		}
    68  
    69  		// Decrypt key with passphrase.
    70  		passphrase := getPassphrase(ctx, false)
    71  		key, err := keystore.DecryptKey(keyjson, passphrase)
    72  		if err != nil {
    73  			utils.Fatalf("Error decrypting key: %v", err)
    74  		}
    75  
    76  		// Output all relevant information we can retrieve.
    77  		showPrivate := ctx.Bool("private")
    78  		out := outputInspect{
    79  			Address:   key.Address.Hex(),
    80  			PublicKey: hex.EncodeToString(key.PrivateKey.PublicKey()[:]),
    81  		}
    82  		if showPrivate {
    83  			out.PrivateKey = hex.EncodeToString(crypto.MarshalPrivateKey(key.PrivateKey))
    84  		}
    85  
    86  		if ctx.Bool(jsonFlag.Name) {
    87  			mustPrintJSON(out)
    88  		} else {
    89  			fmt.Println("Address:       ", out.Address)
    90  			fmt.Println("Public key:    ", out.PublicKey)
    91  			if showPrivate {
    92  				fmt.Println("Private key:   ", out.PrivateKey)
    93  			}
    94  		}
    95  		return nil
    96  	},
    97  }