chore: remove refs to deprecated io/ioutil (#459)

thanks @testwill

client/client.go

@@ -8,10 +8,10 @@ import (
 	"encoding/base64"
 	"errors"
 	"fmt"
-	"io/ioutil"
 	"net"
 	"net/http"
 	"net/url"
+	"os"
 	"regexp"
 	"strings"
 	"time"
@@ -118,7 +118,7 @@ func NewClient(c *Config) (*Client, error) {
 			tc.InsecureSkipVerify = true
 		} else if c.TLS.CA != "" {
 			rootCAs := x509.NewCertPool()
-			if b, err := ioutil.ReadFile(c.TLS.CA); err != nil {
+			if b, err := os.ReadFile(c.TLS.CA); err != nil {
 				return nil, fmt.Errorf("Failed to load file: %s", c.TLS.CA)
 			} else if ok := rootCAs.AppendCertsFromPEM(b); !ok {
 				return nil, fmt.Errorf("Failed to decode PEM: %s", c.TLS.CA)

main.go

@@ -3,7 +3,6 @@ package main
 import (
 	"flag"
 	"fmt"
-	"io/ioutil"
 	"log"
 	"net/http"
 	"os"
@@ -89,7 +88,7 @@ var commonHelp = `
 
 func generatePidFile() {
 	pid := []byte(strconv.Itoa(os.Getpid()))
-	if err := ioutil.WriteFile("chisel.pid", pid, 0644); err != nil {
+	if err := os.WriteFile("chisel.pid", pid, 0644); err != nil {
 		log.Fatal(err)
 	}
 }

server/server_listen.go

@@ -4,7 +4,6 @@ import (
 	"crypto/tls"
 	"crypto/x509"
 	"errors"
-	"io/ioutil"
 	"net"
 	"os"
 	"os/user"
@@ -116,7 +115,7 @@ func addCA(ca string, c *tls.Config) error {
 	clientCAPool := x509.NewCertPool()
 	if fileInfo.IsDir() {
 		//this is a directory holding CA bundle files
-		files, err := ioutil.ReadDir(ca)
+		files, err := os.ReadDir(ca)
 		if err != nil {
 			return err
 		}
@@ -140,7 +139,7 @@ func addCA(ca string, c *tls.Config) error {
 }
 
 func addPEMFile(path string, pool *x509.CertPool) error {
-	content, err := ioutil.ReadFile(path)
+	content, err := os.ReadFile(path)
 	if err != nil {
 		return err
 	}

share/cio/stdio.go

@@ -2,7 +2,6 @@ package cio
 
 import (
 	"io"
-	"io/ioutil"
 	"os"
 )
 
@@ -11,6 +10,6 @@ var Stdio = &struct {
 	io.ReadCloser
 	io.Writer
 }{
-	ioutil.NopCloser(os.Stdin),
+	io.NopCloser(os.Stdin),
 	os.Stdout,
 }

share/settings/users.go

@@ -4,7 +4,7 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
-	"io/ioutil"
+	"os"
 	"regexp"
 	"sync"
 
@@ -125,7 +125,7 @@ func (u *UserIndex) loadUserIndex() error {
 	if u.configFile == "" {
 		return errors.New("configuration file not set")
 	}
-	b, err := ioutil.ReadFile(u.configFile)
+	b, err := os.ReadFile(u.configFile)
 	if err != nil {
 		return fmt.Errorf("Failed to read auth file: %s, error: %s", u.configFile, err)
 	}

share/tunnel/tunnel.go

@@ -4,7 +4,7 @@ import (
 	"bytes"
 	"context"
 	"errors"
-	"io/ioutil"
+	"io"
 	"log"
 	"os"
 	"sync"
@@ -57,7 +57,7 @@ func New(c Config) *Tunnel {
 	//setup socks server (not listening on any port!)
 	extra := ""
 	if c.Socks {
-		sl := log.New(ioutil.Discard, "", 0)
+		sl := log.New(io.Discard, "", 0)
 		if t.Logger.Debug {
 			sl = log.New(os.Stdout, "[socks]", log.Ldate|log.Ltime)
 		}

test/bench/main.go

@@ -17,7 +17,6 @@ import (
 	"flag"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"log"
 	"net/http"
 	"os"
@@ -86,7 +85,7 @@ func testTunnel(port string, size int) {
 		fatal(err)
 	}
 
-	n, err := io.Copy(ioutil.Discard, resp.Body)
+	n, err := io.Copy(io.Discard, resp.Body)
 	if err != nil {
 		fatal(err)
 	}

test/e2e/cert_utils_test.go

@@ -11,7 +11,6 @@ import (
 	"crypto/x509/pkix"
 	"encoding/pem"
 	"fmt"
-	"io/ioutil"
 	"math/big"
 	"net"
 	"os"
@@ -53,7 +52,7 @@ func newTestTLSConfig() (*tlsConfig, error) {
 		return nil, err
 	}
 
-	tlsConfig.tmpDir, err = ioutil.TempDir("", "")
+	tlsConfig.tmpDir, err = os.MkdirTemp("", "")
 	if err != nil {
 		return nil, err
 	}
@@ -63,7 +62,7 @@ func newTestTLSConfig() (*tlsConfig, error) {
 		return nil, err
 	}
 	pathServerCACrt := path.Join(dirServerCA, "client.crt")
-	if err := ioutil.WriteFile(pathServerCACrt, clientCertPEM, 0666); err != nil {
+	if err := os.WriteFile(pathServerCACrt, clientCertPEM, 0666); err != nil {
 		return nil, err
 	}
 
@@ -72,7 +71,7 @@ func newTestTLSConfig() (*tlsConfig, error) {
 		return nil, err
 	}
 	pathClientCACrt := path.Join(dirClientCA, "server.crt")
-	if err := ioutil.WriteFile(pathClientCACrt, serverCertPEM, 0666); err != nil {
+	if err := os.WriteFile(pathClientCACrt, serverCertPEM, 0666); err != nil {
 		return nil, err
 	}
 
@@ -81,11 +80,11 @@ func newTestTLSConfig() (*tlsConfig, error) {
 		return nil, err
 	}
 	pathServerCrtCrt := path.Join(dirServerCrt, "server.crt")
-	if err := ioutil.WriteFile(pathServerCrtCrt, serverCertPEM, 0666); err != nil {
+	if err := os.WriteFile(pathServerCrtCrt, serverCertPEM, 0666); err != nil {
 		return nil, err
 	}
 	pathServerCrtKey := path.Join(dirServerCrt, "server.key")
-	if err := ioutil.WriteFile(pathServerCrtKey, serverKeyPEM, 0666); err != nil {
+	if err := os.WriteFile(pathServerCrtKey, serverKeyPEM, 0666); err != nil {
 		return nil, err
 	}
 
@@ -94,11 +93,11 @@ func newTestTLSConfig() (*tlsConfig, error) {
 		return nil, err
 	}
 	pathClientCrtCrt := path.Join(dirClientCrt, "client.crt")
-	if err := ioutil.WriteFile(pathClientCrtCrt, clientCertPEM, 0666); err != nil {
+	if err := os.WriteFile(pathClientCrtCrt, clientCertPEM, 0666); err != nil {
 		return nil, err
 	}
 	pathClientCrtKey := path.Join(dirClientCrt, "client.key")
-	if err := ioutil.WriteFile(pathClientCrtKey, clientKeyPEM, 0666); err != nil {
+	if err := os.WriteFile(pathClientCrtKey, clientKeyPEM, 0666); err != nil {
 		return nil, err
 	}
 

test/e2e/setup_test.go

@@ -2,7 +2,7 @@ package e2e_test
 
 import (
 	"context"
-	"io/ioutil"
+	"io"
 	"log"
 	"net"
 	"net/http"
@@ -36,7 +36,7 @@ func (tl *testLayout) setup(t *testing.T) (server *chserver.Server, client *chcl
 		fileAddr := "127.0.0.1:" + filePort
 		f := http.Server{
 			Handler: http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-				b, _ := ioutil.ReadAll(r.Body)
+				b, _ := io.ReadAll(r.Body)
 				w.Write(append(b, '!'))
 			}),
 		}
@@ -133,7 +133,7 @@ func post(url, body string) (string, error) {
 	if err != nil {
 		return "", err
 	}
-	b, err := ioutil.ReadAll(resp.Body)
+	b, err := io.ReadAll(resp.Body)
 	if err != nil {
 		return "", err
 	}