Added capabilities to read private key generated by `solana-keygen new` command line

cmd/slnc/cmd/token_list_mints.go

@@ -26,7 +26,7 @@ import (
 var tokenListMintsCmd = &cobra.Command{
 	Use:   "mints",
 	Short: "Lists mints",
-	RunE: func(cmd *cobra.Command, args []string) error {
+	RunE: func(cmd *cobra.Command, _ []string) error {
 		rpcCli := getClient()
 
 		mints, err := token.FetchMints(cmd.Context(), rpcCli)
@@ -36,7 +36,7 @@ var tokenListMintsCmd = &cobra.Command{
 		out := []string{"Mint | Decimals | Supply | Token Authority | Freeze Authority"}
 		for _, m := range mints {
 			line := []string{
-				fmt.Sprintf("%d", m),
+				fmt.Sprintf("%d", m.MintAuthorityOption),
 				fmt.Sprintf("%d", m.Supply),
 				fmt.Sprintf("%d", m.Decimals),
 			}

keys.go

@@ -5,14 +5,22 @@ import (
 	"crypto/ed25519"
 	crypto_rand "crypto/rand"
 	"encoding/json"
-	"errors"
 	"fmt"
+	"io/ioutil"
 
 	"github.com/mr-tron/base58"
 )
 
 type PrivateKey []byte
 
+func MustPrivateKeyFromBase58(in string) PrivateKey {
+	out, err := PrivateKeyFromBase58(in)
+	if err != nil {
+		panic(err)
+	}
+	return out
+}
+
 func PrivateKeyFromBase58(privkey string) (PrivateKey, error) {
 	res, err := base58.Decode(privkey)
 	if err != nil {
@@ -21,6 +29,21 @@ func PrivateKeyFromBase58(privkey string) (PrivateKey, error) {
 	return res, nil
 }
 
+func PrivateKeyFromSolanaKeygenFile(file string) (PrivateKey, error) {
+	content, err := ioutil.ReadFile(file)
+	if err != nil {
+		return nil, fmt.Errorf("read keygen file: %w", err)
+	}
+
+	var values []uint8
+	err = json.Unmarshal(content, &values)
+	if err != nil {
+		return nil, fmt.Errorf("decode keygen file: %w", err)
+	}
+
+	return PrivateKey([]byte(values)), nil
+}
+
 func (k PrivateKey) String() string {
 	return base58.Encode(k)
 }
@@ -58,7 +81,6 @@ func (k PrivateKey) PublicKey() PublicKey {
 	return publicKey
 }
 
-///
 type PublicKey [32]byte
 
 func (p PublicKey) Equals(pb PublicKey) bool {
@@ -76,13 +98,13 @@ func MustPublicKeyFromBase58(in string) PublicKey {
 func PublicKeyFromBase58(in string) (out PublicKey, err error) {
 	val, err := base58.Decode(in)
 	if err != nil {
-		return
+		return out, fmt.Errorf("decode: %w", err)
 	}
 
 	if len(val) != 32 {
-		err = fmt.Errorf("invalid length, expected 32, got %d", len(val))
-		return
+		return out, fmt.Errorf("invalid length, expected 32, got %d", len(val))
 	}
+
 	copy(out[:], val)
 	return
 }
@@ -93,23 +115,14 @@ func (p PublicKey) MarshalJSON() ([]byte, error) {
 
 func (p *PublicKey) UnmarshalJSON(data []byte) (err error) {
 	var s string
-	err = json.Unmarshal(data, &s)
-	if err != nil {
-		return
-	}
-
-	dat, err := base58.Decode(s)
-	if err != nil {
+	if err := json.Unmarshal(data, &s); err != nil {
 		return err
 	}
 
-	if len(dat) != 32 {
-		return errors.New("invalid data length for public key")
+	*p, err = PublicKeyFromBase58(s)
+	if err != nil {
+		return fmt.Errorf("invalid public key %q: %w", s, err)
 	}
-
-	target := PublicKey{}
-	copy(target[:], dat)
-	*p = target
 	return
 }
 

keys_test.go

@@ -0,0 +1,38 @@
+package solana
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestPrivateKeyFromSolanaKeygenFile(t *testing.T) {
+	tests := []struct {
+		inFile      string
+		expected    PrivateKey
+		expectedPub PublicKey
+		expectedErr error
+	}{
+		{
+			"testdata/standard.solana-keygen.json",
+			MustPrivateKeyFromBase58("66cDvko73yAf8LYvFMM3r8vF5vJtkk7JKMgEKwkmBC86oHdq41C7i1a2vS3zE1yCcdLLk6VUatUb32ZzVjSBXtRs"),
+			MustPublicKeyFromBase58("F8UvVsKnzWyp2nF8aDcqvQ2GVcRpqT91WDsAtvBKCMt9"),
+			nil,
+		},
+	}
+
+	for _, test := range tests {
+		t.Run(test.inFile, func(t *testing.T) {
+			actual, err := PrivateKeyFromSolanaKeygenFile(test.inFile)
+			if test.expectedErr == nil {
+				require.NoError(t, err)
+				assert.Equal(t, test.expected, actual)
+				assert.Equal(t, test.expectedPub, actual.PublicKey(), "%s != %s", test.expectedPub, actual.PublicKey())
+
+			} else {
+				assert.Equal(t, test.expectedErr, err)
+			}
+		})
+	}
+}

testdata/standard.solana-keygen.json

@@ -0,0 +1 @@
+[254,235,166,85,112,29,132,16,126,87,234,58,144,120,98,141,75,133,85,10,31,71,74,147,81,189,128,180,112,21,110,62,209,238,65,42,248,12,152,28,130,46,170,32,19,8,11,29,255,208,207,18,123,131,230,60,249,157,68,133,246,187,45,62]