chore: remove refs to deprecated io/ioutil

framework/buffer/memory.go

@@ -20,7 +20,6 @@ package buffer
 
 import (
 	"io"
-	"io/ioutil"
 )
 
 // MemoryBuffer implements Buffer interface using byte slice.
@@ -43,7 +42,7 @@ func (mb MemoryBuffer) Remove() error {
 // BufferInMemory is a convenience function which creates MemoryBuffer with
 // contents of the passed io.Reader.
 func BufferInMemory(r io.Reader) (Buffer, error) {
-	blob, err := ioutil.ReadAll(r)
+	blob, err := io.ReadAll(r)
 	if err != nil {
 		return nil, err
 	}

framework/config/tls/client.go

@@ -22,7 +22,7 @@ import (
 	"crypto/tls"
 	"crypto/x509"
 	"fmt"
-	"io/ioutil"
+	"os"
 
 	"github.com/foxcpp/maddy/framework/config"
 	"github.com/foxcpp/maddy/framework/log"
@@ -58,7 +58,7 @@ func TLSClientBlock(_ *config.Map, node config.Node) (interface{}, error) {
 	if len(rootCAPaths) != 0 {
 		pool := x509.NewCertPool()
 		for _, path := range rootCAPaths {
-			blob, err := ioutil.ReadFile(path)
+			blob, err := os.ReadFile(path)
 			if err != nil {
 				return nil, err
 			}

framework/log/log.go

@@ -22,7 +22,6 @@ package log
 import (
 	"fmt"
 	"io"
-	"io/ioutil"
 	"os"
 	"strings"
 	"time"
@@ -199,7 +198,7 @@ func (l Logger) Write(s []byte) (int, error) {
 // Write method of returned object will be no-op.
 func (l Logger) DebugWriter() io.Writer {
 	if !l.Debug {
-		return ioutil.Discard
+		return io.Discard
 	}
 	l.Debug = true
 	return &l

internal/modify/dkim/dkim_test.go

@@ -21,7 +21,7 @@ package dkim
 import (
 	"bytes"
 	"context"
-	"io/ioutil"
+	"os"
 	"path/filepath"
 	"reflect"
 	"sort"
@@ -106,7 +106,7 @@ func verifyTestMsg(t *testing.T, keysPath string, expectedDomains []string, hdr
 	domainsMap := make(map[string]bool)
 	zones := map[string]mockdns.Zone{}
 	for _, domain := range expectedDomains {
-		dnsRecord, err := ioutil.ReadFile(filepath.Join(keysPath, domain+".dns"))
+		dnsRecord, err := os.ReadFile(filepath.Join(keysPath, domain+".dns"))
 		if err != nil {
 			t.Fatal(err)
 		}

internal/modify/dkim/keys.go

@@ -29,7 +29,6 @@ import (
 	"encoding/pem"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 )
@@ -45,7 +44,7 @@ func (m *Modifier) loadOrGenerateKey(keyPath, newKeyAlgo string) (pkey crypto.Si
 	}
 	defer f.Close()
 
-	pemBlob, err := ioutil.ReadAll(f)
+	pemBlob, err := io.ReadAll(f)
 	if err != nil {
 		return nil, false, err
 	}

internal/modify/dkim/keys_test.go

@@ -22,7 +22,7 @@ import (
 	"crypto/ed25519"
 	"crypto/rsa"
 	"encoding/base64"
-	"io/ioutil"
+	"os"
 	"path/filepath"
 	"strings"
 	"testing"
@@ -44,7 +44,7 @@ func TestKeyLoad_new(t *testing.T) {
 		t.Fatal("newKey=false")
 	}
 
-	recordBlob, err := ioutil.ReadFile(filepath.Join(dir, "testkey.dns"))
+	recordBlob, err := os.ReadFile(filepath.Join(dir, "testkey.dns"))
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -82,7 +82,7 @@ func TestKeyLoad_existing_pkcs8(t *testing.T) {
 
 	dir := t.TempDir()
 
-	if err := ioutil.WriteFile(filepath.Join(dir, "testkey.key"), []byte(pkeyEd25519), 0o600); err != nil {
+	if err := os.WriteFile(filepath.Join(dir, "testkey.key"), []byte(pkeyEd25519), 0o600); err != nil {
 		t.Fatal(err)
 	}
 
@@ -134,7 +134,7 @@ func TestKeyLoad_existing_pkcs1(t *testing.T) {
 
 	dir := t.TempDir()
 
-	if err := ioutil.WriteFile(filepath.Join(dir, "testkey.key"), []byte(pkeyRSA), 0o600); err != nil {
+	if err := os.WriteFile(filepath.Join(dir, "testkey.key"), []byte(pkeyRSA), 0o600); err != nil {
 		t.Fatal(err)
 	}
 

internal/table/file_test.go

@@ -19,7 +19,6 @@ along with this program.  If not, see <https://www.gnu.org/licenses/>.
 package table
 
 import (
-	"io/ioutil"
 	"os"
 	"reflect"
 	"testing"
@@ -33,7 +32,7 @@ func TestReadFile(t *testing.T) {
 	test := func(file string, expected map[string][]string) {
 		t.Helper()
 
-		f, err := ioutil.TempFile("", "maddy-tests-")
+		f, err := os.CreateTemp("", "maddy-tests-")
 		if err != nil {
 			t.Fatal(err)
 		}
@@ -88,7 +87,7 @@ func TestFileReload(t *testing.T) {
 
 	const file = `cat: dog`
 
-	f, err := ioutil.TempFile("", "maddy-tests-")
+	f, err := os.CreateTemp("", "maddy-tests-")
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -139,7 +138,7 @@ func TestFileReload_Broken(t *testing.T) {
 
 	const file = `cat: dog`
 
-	f, err := ioutil.TempFile("", "maddy-tests-")
+	f, err := os.CreateTemp("", "maddy-tests-")
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -185,7 +184,7 @@ func TestFileReload_Removed(t *testing.T) {
 
 	const file = `cat: dog`
 
-	f, err := ioutil.TempFile("", "maddy-tests-")
+	f, err := os.CreateTemp("", "maddy-tests-")
 	if err != nil {
 		t.Fatal(err)
 	}

internal/target/queue/queue.go

@@ -63,7 +63,6 @@ import (
 	"errors"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"math"
 	"os"
 	"path/filepath"
@@ -640,7 +639,7 @@ func (q *Queue) removeFromDisk(msgMeta *module.MsgMetadata) {
 }
 
 func (q *Queue) readDiskQueue() error {
-	dirInfo, err := ioutil.ReadDir(q.location)
+	dirInfo, err := os.ReadDir(q.location)
 	if err != nil {
 		return err
 	}

internal/target/queue/queue_test.go

@@ -24,7 +24,7 @@ import (
 	"crypto/sha1"
 	"encoding/hex"
 	"errors"
-	"io/ioutil"
+	"io"
 	"os"
 	"path/filepath"
 	"reflect"
@@ -122,7 +122,7 @@ func (utd *unreliableTargetDelivery) Body(ctx context.Context, header textproto.
 	}
 
 	r, _ := body.Open()
-	utd.msg.Body, _ = ioutil.ReadAll(r)
+	utd.msg.Body, _ = io.ReadAll(r)
 
 	if len(utd.ut.bodyFailures) > utd.ut.passedMessages {
 		return utd.ut.bodyFailures[utd.ut.passedMessages]
@@ -133,7 +133,7 @@ func (utd *unreliableTargetDelivery) Body(ctx context.Context, header textproto.
 
 func (utd *unreliableTargetDeliveryPartial) BodyNonAtomic(ctx context.Context, c module.StatusCollector, header textproto.Header, body buffer.Buffer) {
 	r, _ := body.Open()
-	utd.msg.Body, _ = ioutil.ReadAll(r)
+	utd.msg.Body, _ = io.ReadAll(r)
 
 	if len(utd.ut.bodyFailuresPartial) > utd.ut.passedMessages {
 		for rcpt, err := range utd.ut.bodyFailuresPartial[utd.ut.passedMessages] {
@@ -200,7 +200,7 @@ func checkQueueDir(t *testing.T, q *Queue, expectedIDs []string) {
 		expectedMap[id] = false
 	}
 
-	dir, err := ioutil.ReadDir(q.location)
+	dir, err := os.ReadDir(q.location)
 	if err != nil {
 		t.Fatalf("failed to read queue directory: %v", err)
 	}

internal/testutils/bench_delivery.go

@@ -23,7 +23,7 @@ import (
 	"context"
 	"crypto/sha1"
 	"encoding/hex"
-	"io/ioutil"
+	"io"
 	"strconv"
 	"strings"
 	"testing"
@@ -100,7 +100,7 @@ func RandomMsg(b *testing.B) (module.MsgMetadata, textproto.Header, buffer.Buffe
 	for i := 0; i < ExtraMessageHeaderFields; i++ {
 		hdr.Add("AAAAAAAAAAAA-"+strconv.Itoa(i), strings.Repeat("A", ExtraMessageHeaderFieldSize))
 	}
-	bodyBlob, _ := ioutil.ReadAll(body)
+	bodyBlob, _ := io.ReadAll(body)
 
 	return module.MsgMetadata{
 		DontTraceSender: true,

internal/testutils/buffer.go

@@ -22,7 +22,6 @@ import (
 	"bufio"
 	"bytes"
 	"io"
-	"io/ioutil"
 	"strings"
 	"testing"
 
@@ -38,7 +37,7 @@ func BodyFromStr(t *testing.T, literal string) (textproto.Header, buffer.MemoryB
 	if err != nil {
 		t.Fatal(err)
 	}
-	body, err := ioutil.ReadAll(bufr)
+	body, err := io.ReadAll(bufr)
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -67,10 +66,10 @@ type FailingBuffer struct {
 }
 
 func (fb FailingBuffer) Open() (io.ReadCloser, error) {
-	r := ioutil.NopCloser(bytes.NewReader(fb.Blob))
+	r := io.NopCloser(bytes.NewReader(fb.Blob))
 
 	if fb.IOError != nil {
-		return ioutil.NopCloser(&errorReader{r, fb.IOError}), fb.OpenError
+		return io.NopCloser(&errorReader{r, fb.IOError}), fb.OpenError
 	}
 
 	return r, fb.OpenError

internal/testutils/filesystem.go

@@ -19,14 +19,14 @@ along with this program.  If not, see <https://www.gnu.org/licenses/>.
 package testutils
 
 import (
-	"io/ioutil"
+	"os"
 	"testing"
 )
 
-// Dir is a wrapper for ioutil.TempDir that
+// Dir is a wrapper for os.MkdirTemp that
 // fails the test on errors.
 func Dir(t *testing.T) string {
-	dir, err := ioutil.TempDir("", "maddy-tests-")
+	dir, err := os.MkdirTemp("", "maddy-tests-")
 	if err != nil {
 		t.Fatalf("can't create test dir: %v", err)
 	}

internal/testutils/smtp_server.go

@@ -22,7 +22,6 @@ import (
 	"crypto/tls"
 	"crypto/x509"
 	"io"
-	"io/ioutil"
 	"net"
 	"reflect"
 	"sort"
@@ -144,7 +143,7 @@ func (s *session) Data(r io.Reader) error {
 		return s.backend.DataErr
 	}
 
-	b, err := ioutil.ReadAll(r)
+	b, err := io.ReadAll(r)
 	if err != nil {
 		return err
 	}
@@ -161,7 +160,7 @@ func (s *session) LMTPData(r io.Reader, status smtp.StatusCollector) error {
 		return s.backend.DataErr
 	}
 
-	b, err := ioutil.ReadAll(r)
+	b, err := io.ReadAll(r)
 	if err != nil {
 		return err
 	}

internal/testutils/target.go

@@ -24,7 +24,6 @@ import (
 	"encoding/hex"
 	"errors"
 	"io"
-	"io/ioutil"
 	"reflect"
 	"sort"
 	"testing"
@@ -131,7 +130,7 @@ func (dtd *testTargetDeliveryPartial) BodyNonAtomic(ctx context.Context, c modul
 	}
 	defer body.Close()
 
-	dtd.msg.Body, err = ioutil.ReadAll(body)
+	dtd.msg.Body, err = io.ReadAll(body)
 	if err != nil {
 		for rcpt, err := range dtd.tgt.PartialBodyErr {
 			c.SetStatus(rcpt, err)
@@ -157,11 +156,11 @@ func (dtd *testTargetDelivery) Body(ctx context.Context, header textproto.Header
 
 	if dtd.tgt.DiscardMessages {
 		// Don't bother.
-		_, err = io.Copy(ioutil.Discard, body)
+		_, err = io.Copy(io.Discard, body)
 		return err
 	}
 
-	dtd.msg.Body, err = ioutil.ReadAll(body)
+	dtd.msg.Body, err = io.ReadAll(body)
 	return err
 }
 

tests/t.go

@@ -27,7 +27,6 @@ import (
 	"bufio"
 	"flag"
 	"fmt"
-	"io/ioutil"
 	"math/rand"
 	"net"
 	"os"
@@ -150,7 +149,7 @@ func (t *T) Run(waitListeners int) {
 	}
 
 	// Setup file system, create statedir, runtimedir, write out config.
-	testDir, err := ioutil.TempDir("", "maddy-tests-")
+	testDir, err := os.MkdirTemp("", "maddy-tests-")
 	if err != nil {
 		t.Fatal("Test configuration failed:", err)
 	}
@@ -182,7 +181,7 @@ func (t *T) Run(waitListeners int) {
 	configPreable := "state_dir " + filepath.Join(t.testDir, "statedir") + "\n" +
 		"runtime_dir " + filepath.Join(t.testDir, "runtime") + "\n\n"
 
-	err = ioutil.WriteFile(filepath.Join(t.testDir, "maddy.conf"), []byte(configPreable+t.cfg), os.ModePerm)
+	err = os.WriteFile(filepath.Join(t.testDir, "maddy.conf"), []byte(configPreable+t.cfg), os.ModePerm)
 	if err != nil {
 		t.Fatal("Test configuration failed:", err)
 	}