update deprecated ioutil

accounts/abi/bind/auth.go

@@ -20,7 +20,6 @@ import (
 	"crypto/ecdsa"
 	"errors"
 	"io"
-	"io/ioutil"
 	"math/big"
 
 	"github.com/ethereum/go-ethereum/common"
@@ -44,7 +43,7 @@ var ErrNotAuthorized = errors.New("not authorized to sign this account")
 // Deprecated: Use NewTransactorWithChainID instead.
 func NewTransactor(keyin io.Reader, passphrase string) (*TransactOpts, error) {
 	log.Warn("WARNING: NewTransactor has been deprecated in favour of NewTransactorWithChainID")
-	json, err := ioutil.ReadAll(keyin)
+	json, err := io.ReadAll(keyin)
 	if err != nil {
 		return nil, err
 	}
@@ -103,7 +102,7 @@ func NewKeyedTransactor(key *ecdsa.PrivateKey) *TransactOpts {
 // NewTransactorWithChainID is a utility method to easily create a transaction signer from
 // an encrypted json key stream and the associated passphrase.
 func NewTransactorWithChainID(keyin io.Reader, passphrase string, chainID *big.Int) (*TransactOpts, error) {
-	json, err := ioutil.ReadAll(keyin)
+	json, err := io.ReadAll(keyin)
 	if err != nil {
 		return nil, err
 	}

accounts/keystore/account_cache_test.go

@@ -18,7 +18,6 @@ package keystore
 
 import (
 	"fmt"
-	"io/ioutil"
 	"math/rand"
 	"os"
 	"path/filepath"
@@ -133,11 +132,11 @@ func TestUpdatedKeyfileContents(t *testing.T) {
 		return
 	}
 
-	// needed so that modTime of `file` is different to its current value after ioutil.WriteFile
+	// needed so that modTime of `file` is different to its current value after io.WriteFile
 	time.Sleep(1000 * time.Millisecond)
 
 	// Now replace file contents with crap
-	if err := ioutil.WriteFile(file, []byte("foo"), 0644); err != nil {
+	if err := os.WriteFile(file, []byte("foo"), 0644); err != nil {
 		t.Fatal(err)
 		return
 	}
@@ -150,9 +149,9 @@ func TestUpdatedKeyfileContents(t *testing.T) {
 
 // forceCopyFile is like cp.CopyFile, but doesn't complain if the destination exists.
 func forceCopyFile(dst, src string) error {
-	data, err := ioutil.ReadFile(src)
+	data, err := os.ReadFile(src)
 	if err != nil {
 		return err
 	}
-	return ioutil.WriteFile(dst, data, 0644)
+	return os.WriteFile(dst, data, 0644)
 }

accounts/keystore/file_cache.go

@@ -17,7 +17,7 @@
 package keystore
 
 import (
-	"io/ioutil"
+	"io/fs"
 	"os"
 	"path/filepath"
 	"strings"
@@ -42,7 +42,7 @@ func (fc *fileCache) scan(keyDir string) (mapset.Set, mapset.Set, mapset.Set, er
 	t0 := time.Now()
 
 	// List all the failes from the keystore folder
-	files, err := ioutil.ReadDir(keyDir)
+	files, err := os.ReadDir(keyDir)
 	if err != nil {
 		return nil, nil, nil, err
 	}
@@ -63,15 +63,19 @@ func (fc *fileCache) scan(keyDir string) (mapset.Set, mapset.Set, mapset.Set, er
 			utils.Logger().Debug().Str("path", path).Msg("Ignoring file on account scan")
 			continue
 		}
-		// Gather the set of all and fresly modified files
+		// Gather the set of all and freshly modified files
 		all.Add(path)
 
-		modified := fi.ModTime()
-		if modified.After(fc.lastMod) {
-			mods.Add(path)
-		}
-		if modified.After(newLastMod) {
-			newLastMod = modified
+		if info, err := fi.Info(); err != nil {
+			continue
+		} else {
+			modified := info.ModTime()
+			if modified.After(fc.lastMod) {
+				mods.Add(path)
+			}
+			if modified.After(newLastMod) {
+				newLastMod = modified
+			}
 		}
 	}
 	t2 := time.Now()
@@ -94,14 +98,18 @@ func (fc *fileCache) scan(keyDir string) (mapset.Set, mapset.Set, mapset.Set, er
 }
 
 // nonKeyFile ignores editor backups, hidden files and folders/symlinks.
-func nonKeyFile(fi os.FileInfo) bool {
+func nonKeyFile(fi fs.DirEntry) bool {
 	// Skip editor backups and UNIX-style hidden files.
 	if strings.HasSuffix(fi.Name(), "~") || strings.HasPrefix(fi.Name(), ".") {
 		return true
 	}
 	// Skip misc special files, directories (yes, symlinks too).
-	if fi.IsDir() || fi.Mode()&os.ModeType != 0 {
+	if info, err := fi.Info(); err != nil {
 		return true
+	} else {
+		if fi.IsDir() || info.Mode()&os.ModeType != 0 {
+			return true
+		}
 	}
 	return false
 }

accounts/keystore/key.go

@@ -23,7 +23,6 @@ import (
 	"encoding/json"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"strings"
@@ -195,7 +194,7 @@ func writeTemporaryKeyFile(file string, content []byte) (string, error) {
 	}
 	// Atomic write: create a temporary hidden file first
 	// then move it into place. TempFile assigns mode 0600.
-	f, err := ioutil.TempFile(filepath.Dir(file), "."+filepath.Base(file)+".tmp")
+	f, err := os.CreateTemp(filepath.Dir(file), "."+filepath.Base(file)+".tmp")
 	if err != nil {
 		return "", err
 	}

accounts/keystore/keystore_test.go

@@ -17,7 +17,6 @@
 package keystore
 
 import (
-	"io/ioutil"
 	"os"
 	"runtime"
 	"strings"
@@ -213,7 +212,7 @@ func TestSignRace(t *testing.T) {
 }
 
 func tmpKeyStore(t *testing.T, encrypted bool) (string, *KeyStore) {
-	d, err := ioutil.TempDir("", "eth-keystore-test")
+	d, err := os.MkdirTemp("", "eth-keystore-test")
 	if err != nil {
 		t.Fatal(err)
 	}

accounts/keystore/passphrase.go

@@ -34,7 +34,6 @@ import (
 	"encoding/json"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 
@@ -82,7 +81,7 @@ type keyStorePassphrase struct {
 
 func (ks keyStorePassphrase) GetKey(addr common.Address, filename, auth string) (*Key, error) {
 	// Load the key from the keystore and decrypt its contents
-	keyjson, err := ioutil.ReadFile(filename)
+	keyjson, err := os.ReadFile(filename)
 	if err != nil {
 		return nil, err
 	}

accounts/keystore/passphrase_test.go

@@ -17,7 +17,7 @@
 package keystore
 
 import (
-	"io/ioutil"
+	"os"
 	"testing"
 
 	"github.com/ethereum/go-ethereum/common"
@@ -30,7 +30,7 @@ const (
 
 // Tests that a json key file can be decrypted and encrypted in multiple rounds.
 func TestKeyEncryptDecrypt(t *testing.T) {
-	keyjson, err := ioutil.ReadFile("testdata/very-light-scrypt.json")
+	keyjson, err := os.ReadFile("testdata/very-light-scrypt.json")
 	if err != nil {
 		t.Fatal(err)
 	}

accounts/keystore/plain_test.go

@@ -20,7 +20,6 @@ import (
 	"crypto/rand"
 	"encoding/hex"
 	"fmt"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"reflect"
@@ -32,7 +31,7 @@ import (
 )
 
 func tmpKeyStoreIface(t *testing.T, encrypted bool) (dir string, ks keyStore) {
-	d, err := ioutil.TempDir("", "geth-keystore-test")
+	d, err := os.MkdirTemp("", "geth-keystore-test")
 	if err != nil {
 		t.Fatal(err)
 	}

cmd/harmony/config.go

@@ -3,7 +3,6 @@ package main
 import (
 	"errors"
 	"fmt"
-	"io/ioutil"
 	"os"
 	"strings"
 	"time"
@@ -221,7 +220,7 @@ func promptConfigUpdate() bool {
 }
 
 func loadHarmonyConfig(file string) (harmonyconfig.HarmonyConfig, string, error) {
-	b, err := ioutil.ReadFile(file)
+	b, err := os.ReadFile(file)
 	if err != nil {
 		return harmonyconfig.HarmonyConfig{}, "", err
 	}
@@ -234,12 +233,12 @@ func loadHarmonyConfig(file string) (harmonyconfig.HarmonyConfig, string, error)
 }
 
 func updateConfigFile(file string) error {
-	configBytes, err := ioutil.ReadFile(file)
+	configBytes, err := os.ReadFile(file)
 	if err != nil {
 		return err
 	}
 	backup := fmt.Sprintf("%s.backup", file)
-	if err := ioutil.WriteFile(backup, configBytes, 0664); err != nil {
+	if err := os.WriteFile(backup, configBytes, 0664); err != nil {
 		return err
 	}
 	fmt.Printf("Original config backed up to %s\n", fmt.Sprintf("%s.backup", file))
@@ -259,5 +258,5 @@ func writeHarmonyConfigToFile(config harmonyconfig.HarmonyConfig, file string) e
 	if err != nil {
 		return err
 	}
-	return ioutil.WriteFile(file, b, 0644)
+	return os.WriteFile(file, b, 0644)
 }

cmd/harmony/config_test.go

@@ -2,7 +2,6 @@ package main
 
 import (
 	"fmt"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"reflect"
@@ -120,7 +119,7 @@ Version = "1.0.4"
 	os.RemoveAll(testDir)
 	os.MkdirAll(testDir, 0777)
 	file := filepath.Join(testDir, "test.config")
-	err := ioutil.WriteFile(file, []byte(testConfig), 0644)
+	err := os.WriteFile(file, []byte(testConfig), 0644)
 	if err != nil {
 		t.Fatal(err)
 	}

cmd/harmony/main.go

@@ -2,7 +2,6 @@ package main
 
 import (
 	"fmt"
-	"io/ioutil"
 	"math/big"
 	"math/rand"
 	_ "net/http/pprof"
@@ -1034,7 +1033,7 @@ func setupBlacklist(hc harmonyconfig.HarmonyConfig) (map[ethCommon.Address]struc
 	rosetta_common.InitRosettaFile(hc.TxPool.RosettaFixFile)
 
 	utils.Logger().Debug().Msgf("Using blacklist file at `%s`", hc.TxPool.BlacklistFile)
-	dat, err := ioutil.ReadFile(hc.TxPool.BlacklistFile)
+	dat, err := os.ReadFile(hc.TxPool.BlacklistFile)
 	if err != nil {
 		return nil, err
 	}
@@ -1085,7 +1084,7 @@ func parseAllowedTxs(data []byte) (map[ethCommon.Address]core.AllowedTxData, err
 
 func setupAllowedTxs(hc harmonyconfig.HarmonyConfig) (map[ethCommon.Address]core.AllowedTxData, error) {
 	utils.Logger().Debug().Msgf("Using AllowedTxs file at `%s`", hc.TxPool.AllowedTxsFile)
-	data, err := ioutil.ReadFile(hc.TxPool.AllowedTxsFile)
+	data, err := os.ReadFile(hc.TxPool.AllowedTxsFile)
 	if err != nil {
 		return nil, err
 	}
@@ -1097,7 +1096,7 @@ func setupLocalAccounts(hc harmonyconfig.HarmonyConfig, blacklist map[ethCommon.
 	// check if file exist
 	var fileData string
 	if _, err := os.Stat(file); err == nil {
-		b, err := ioutil.ReadFile(file)
+		b, err := os.ReadFile(file)
 		if err != nil {
 			return nil, err
 		}
@@ -1113,22 +1112,23 @@ func setupLocalAccounts(hc harmonyconfig.HarmonyConfig, blacklist map[ethCommon.
 	localAccounts := make(map[ethCommon.Address]struct{})
 	lines := strings.Split(fileData, "\n")
 	for _, line := range lines {
-		if len(line) != 0 { // the file may have trailing empty string line
-			trimmedLine := strings.TrimSpace(line)
-			if strings.HasPrefix(trimmedLine, "#") { //check the line is not commented
-				continue
-			}
-			addr, err := common.Bech32ToAddress(trimmedLine)
-			if err != nil {
-				return nil, err
-			}
-			// skip the blacklisted addresses
-			if _, exists := blacklist[addr]; exists {
-				utils.Logger().Warn().Msgf("local account with address %s is blacklisted", addr.String())
-				continue
-			}
-			localAccounts[addr] = struct{}{}
+		if len(line) == 0 { // the file may have trailing empty string line
+			continue
+		}
+		addrPart := strings.TrimSpace(strings.Split(string(line), "#")[0])
+		if len(addrPart) == 0 { // if the line is commented by #
+			continue
+		}
+		addr, err := common.ParseAddr(addrPart)
+		if err != nil {
+			return nil, err
+		}
+		// skip the blacklisted addresses
+		if _, exists := blacklist[addr]; exists {
+			utils.Logger().Warn().Msgf("local account with address %s is blacklisted", addr.String())
+			continue
 		}
+		localAccounts[addr] = struct{}{}
 	}
 	uniqueAddresses := make([]ethCommon.Address, 0, len(localAccounts))
 	for addr := range localAccounts {

core/genesis_util.go

@@ -3,8 +3,8 @@ package core
 import (
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
 	"math/big"
+	"os"
 	"sort"
 
 	"github.com/ethereum/go-ethereum/rlp"
@@ -29,7 +29,7 @@ func encodeGenesisConfig(ga []GenesisItem) string {
 }
 
 func parseGenesisConfigFile(fileName string) genesisConfig {
-	input, err := ioutil.ReadFile(fileName)
+	input, err := os.ReadFile(fileName)
 	if err != nil {
 		panic(fmt.Sprintf("cannot open genesisblock config file %v, err %v\n", fileName, err))
 	}

core/tx_pool_test.go

@@ -19,7 +19,6 @@ package core
 import (
 	"crypto/ecdsa"
 	"fmt"
-	"io/ioutil"
 	"math/big"
 	"math/rand"
 	"os"
@@ -1354,7 +1353,7 @@ func testTransactionJournaling(t *testing.T, nolocals bool) {
 	t.Parallel()
 
 	// Create a temporary file for the journal
-	file, err := ioutil.TempFile("", "")
+	file, err := os.CreateTemp("", "")
 	if err != nil {
 		t.Fatalf("failed to create temporary journal: %v", err)
 	}