chore: update Go (#1469)

.github/workflows/go-cross.yml

@@ -16,7 +16,7 @@ jobs:
 
     strategy:
       matrix:
-        go-version: [ 1.15, 1.16, 1.x ]
+        go-version: [ 1.16, 1.17, 1.x ]
         os: [ubuntu-latest, macos-latest, windows-latest]
 
     steps:

.github/workflows/main.yml

@@ -14,8 +14,8 @@ jobs:
     name: Main Process
     runs-on: ubuntu-latest
     env:
-      GO_VERSION: 1.16
-      GOLANGCI_LINT_VERSION: v1.41.1
+      GO_VERSION: 1.17
+      GOLANGCI_LINT_VERSION: v1.42.0
       HUGO_VERSION: 0.54.0
       SEIHON_VERSION: v0.8.3
       CGO_ENABLED: 0

.golangci.toml

@@ -73,6 +73,7 @@
     "noctx",
     "forcetypeassert",
     "tagliatelle",
+    "errname",
   ]
 
 [issues]

acme/api/certificate.go

@@ -4,7 +4,7 @@ import (
 	"crypto/x509"
 	"encoding/pem"
 	"errors"
-	"io/ioutil"
+	"io"
 	"net/http"
 
 	"github.com/go-acme/lego/v4/acme"
@@ -71,7 +71,7 @@ func (c *CertificateService) get(certURL string, bundle bool) (*acme.RawCertific
 		return nil, nil, err
 	}
 
-	data, err := ioutil.ReadAll(http.MaxBytesReader(nil, resp.Body, maxBodySize))
+	data, err := io.ReadAll(http.MaxBytesReader(nil, resp.Body, maxBodySize))
 	if err != nil {
 		return nil, resp.Header, err
 	}

acme/api/internal/sender/sender.go

@@ -4,7 +4,6 @@ import (
 	"encoding/json"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"net/http"
 	"runtime"
 	"strings"
@@ -96,7 +95,7 @@ func (d *Doer) do(req *http.Request, response interface{}) (*http.Response, erro
 	}
 
 	if response != nil {
-		raw, err := ioutil.ReadAll(resp.Body)
+		raw, err := io.ReadAll(resp.Body)
 		if err != nil {
 			return resp, err
 		}
@@ -120,7 +119,7 @@ func (d *Doer) formatUserAgent() string {
 
 func checkError(req *http.Request, resp *http.Response) error {
 	if resp.StatusCode >= http.StatusBadRequest {
-		body, err := ioutil.ReadAll(resp.Body)
+		body, err := io.ReadAll(resp.Body)
 		if err != nil {
 			return fmt.Errorf("%d :: %s :: %s :: %w", resp.StatusCode, req.Method, req.URL, err)
 		}

acme/api/order_test.go

@@ -4,7 +4,7 @@ import (
 	"crypto/rand"
 	"crypto/rsa"
 	"encoding/json"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"testing"
 
@@ -12,7 +12,7 @@ import (
 	"github.com/go-acme/lego/v4/platform/tester"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
-	jose "gopkg.in/square/go-jose.v2"
+	"gopkg.in/square/go-jose.v2"
 )
 
 func TestOrderService_New(t *testing.T) {
@@ -67,7 +67,7 @@ func TestOrderService_New(t *testing.T) {
 }
 
 func readSignedBody(r *http.Request, privateKey *rsa.PrivateKey) ([]byte, error) {
-	reqBody, err := ioutil.ReadAll(r.Body)
+	reqBody, err := io.ReadAll(r.Body)
 	if err != nil {
 		return nil, err
 	}

certificate/certificates.go

@@ -7,7 +7,7 @@ import (
 	"encoding/base64"
 	"errors"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"strings"
 	"time"
@@ -465,7 +465,7 @@ func (c *Certifier) GetOCSP(bundle []byte) ([]byte, *ocsp.Response, error) {
 		}
 		defer resp.Body.Close()
 
-		issuerBytes, errC := ioutil.ReadAll(http.MaxBytesReader(nil, resp.Body, maxBodySize))
+		issuerBytes, errC := io.ReadAll(http.MaxBytesReader(nil, resp.Body, maxBodySize))
 		if errC != nil {
 			return nil, nil, errC
 		}
@@ -494,7 +494,7 @@ func (c *Certifier) GetOCSP(bundle []byte) ([]byte, *ocsp.Response, error) {
 	}
 	defer resp.Body.Close()
 
-	ocspResBytes, err := ioutil.ReadAll(http.MaxBytesReader(nil, resp.Body, maxBodySize))
+	ocspResBytes, err := io.ReadAll(http.MaxBytesReader(nil, resp.Body, maxBodySize))
 	if err != nil {
 		return nil, nil, err
 	}

challenge/http01/http_challenge_test.go

@@ -4,7 +4,7 @@ import (
 	"crypto/rand"
 	"crypto/rsa"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"net/textproto"
 	"testing"
@@ -36,7 +36,7 @@ func TestChallenge(t *testing.T) {
 			t.Errorf("Get(%q) Content-Type: got %q, want %q", uri, resp.Header.Get("Content-Type"), want)
 		}
 
-		body, err := ioutil.ReadAll(resp.Body)
+		body, err := io.ReadAll(resp.Body)
 		if err != nil {
 			return err
 		}
@@ -283,7 +283,7 @@ func testServeWithProxy(t *testing.T, header, extra *testProxyHeader, expectErro
 			return fmt.Errorf("Get(%q) Content-Type: got %q, want %q", uri, resp.Header.Get("Content-Type"), want)
 		}
 
-		body, err := ioutil.ReadAll(resp.Body)
+		body, err := io.ReadAll(resp.Body)
 		if err != nil {
 			return err
 		}

challenge/resolver/solver_manager_test.go

@@ -4,7 +4,7 @@ import (
 	"crypto/rand"
 	"crypto/rsa"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"sort"
 	"testing"
@@ -14,7 +14,7 @@ import (
 	"github.com/go-acme/lego/v4/platform/tester"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
-	jose "gopkg.in/square/go-jose.v2"
+	"gopkg.in/square/go-jose.v2"
 )
 
 func TestByType(t *testing.T) {
@@ -154,7 +154,7 @@ func TestValidate(t *testing.T) {
 // or if the JWS body is not the empty JSON payload "{}" or a POST-as-GET payload "" an error is returned.
 // We use this to verify challenge POSTs to the ts below do not send a JWS body.
 func validateNoBody(privateKey *rsa.PrivateKey, r *http.Request) error {
-	reqBody, err := ioutil.ReadAll(r.Body)
+	reqBody, err := io.ReadAll(r.Body)
 	if err != nil {
 		return err
 	}

cmd/accounts_storage.go

@@ -7,7 +7,6 @@ import (
 	"encoding/pem"
 	"errors"
 	"fmt"
-	"io/ioutil"
 	"net/url"
 	"os"
 	"path/filepath"
@@ -122,11 +121,11 @@ func (s *AccountsStorage) Save(account *Account) error {
 		return err
 	}
 
-	return ioutil.WriteFile(s.accountFilePath, jsonBytes, filePerm)
+	return os.WriteFile(s.accountFilePath, jsonBytes, filePerm)
 }
 
 func (s *AccountsStorage) LoadAccount(privateKey crypto.PrivateKey) *Account {
-	fileBytes, err := ioutil.ReadFile(s.accountFilePath)
+	fileBytes, err := os.ReadFile(s.accountFilePath)
 	if err != nil {
 		log.Fatalf("Could not load file for account %s: %v", s.userID, err)
 	}
@@ -207,7 +206,7 @@ func generatePrivateKey(file string, keyType certcrypto.KeyType) (crypto.Private
 }
 
 func loadPrivateKey(file string) (crypto.PrivateKey, error) {
-	keyBytes, err := ioutil.ReadFile(file)
+	keyBytes, err := os.ReadFile(file)
 	if err != nil {
 		return nil, err
 	}

cmd/certs_storage.go

@@ -4,7 +4,6 @@ import (
 	"bytes"
 	"crypto/x509"
 	"encoding/json"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"strconv"
@@ -144,7 +143,7 @@ func (s *CertificatesStorage) ExistsFile(domain, extension string) bool {
 }
 
 func (s *CertificatesStorage) ReadFile(domain, extension string) ([]byte, error) {
-	return ioutil.ReadFile(s.GetFileName(domain, extension))
+	return os.ReadFile(s.GetFileName(domain, extension))
 }
 
 func (s *CertificatesStorage) GetFileName(domain, extension string) string {
@@ -172,7 +171,7 @@ func (s *CertificatesStorage) WriteFile(domain, extension string, data []byte) e
 
 	filePath := filepath.Join(s.rootPath, baseFileName+extension)
 
-	return ioutil.WriteFile(filePath, data, filePerm)
+	return os.WriteFile(filePath, data, filePerm)
 }
 
 func (s *CertificatesStorage) MoveToArchive(domain string) error {

cmd/cmd_list.go

@@ -3,8 +3,8 @@ package cmd
 import (
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
 	"net/url"
+	"os"
 	"path/filepath"
 	"strings"
 
@@ -66,7 +66,7 @@ func listCertificates(ctx *cli.Context) error {
 			continue
 		}
 
-		data, err := ioutil.ReadFile(filename)
+		data, err := os.ReadFile(filename)
 		if err != nil {
 			return err
 		}
@@ -110,7 +110,7 @@ func listAccount(ctx *cli.Context) error {
 
 	fmt.Println("Found the following accounts:")
 	for _, filename := range matches {
-		data, err := ioutil.ReadFile(filename)
+		data, err := os.ReadFile(filename)
 		if err != nil {
 			return err
 		}

cmd/setup.go

@@ -4,7 +4,6 @@ import (
 	"crypto/x509"
 	"encoding/pem"
 	"fmt"
-	"io/ioutil"
 	"os"
 	"strings"
 	"time"
@@ -98,7 +97,7 @@ func createNonExistingFolder(path string) error {
 }
 
 func readCSRFile(filename string) (*x509.CertificateRequest, error) {
-	bytes, err := ioutil.ReadFile(filename)
+	bytes, err := os.ReadFile(filename)
 	if err != nil {
 		return nil, err
 	}

e2e/challenges_test.go

@@ -6,7 +6,6 @@ import (
 	"crypto/rsa"
 	"crypto/x509"
 	"fmt"
-	"io/ioutil"
 	"os"
 	"testing"
 
@@ -333,7 +332,7 @@ func TestChallengeTLS_Client_ObtainForCSR(t *testing.T) {
 	require.NoError(t, err)
 	user.registration = reg
 
-	csrRaw, err := ioutil.ReadFile("./fixtures/csr.raw")
+	csrRaw, err := os.ReadFile("./fixtures/csr.raw")
 	require.NoError(t, err)
 
 	csr, err := x509.ParseCertificateRequest(csrRaw)

go.mod

@@ -1,6 +1,6 @@
 module github.com/go-acme/lego/v4
 
-go 1.15
+go 1.16
 
 // github.com/exoscale/egoscale v1.19.0 => It is an error, please don't use it.
 // github.com/linode/linodego v1.0.0 => It is an error, please don't use it.

go.sum

@@ -343,7 +343,6 @@ github.com/modern-go/reflect2 v1.0.1/go.mod h1:bx2lNnkwVCuqBIxFjflWJWanXIb3Rllmb
 github.com/mwitkow/go-conntrack v0.0.0-20161129095857-cc309e4a2223/go.mod h1:qRWi+5nqEBWmkhHvq77mSJWrCKwh8bxhgT7d/eI7P4U=
 github.com/namedotcom/go v0.0.0-20180403034216-08470befbe04 h1:o6uBwrhM5C8Ll3MAAxrQxRHEu7FkapwTuI2WmL1rw4g=
 github.com/namedotcom/go v0.0.0-20180403034216-08470befbe04/go.mod h1:5sN+Lt1CaY4wsPvgQH/jsuJi4XO2ssZbdsIizr4CVC8=
-github.com/nbio/st v0.0.0-20140626010706-e9e8d9816f32 h1:W6apQkHrMkS0Muv8G/TipAy/FJl/rCYT0+EuS8+Z0z4=
 github.com/nbio/st v0.0.0-20140626010706-e9e8d9816f32/go.mod h1:9wM+0iRr9ahx58uYLpLIr5fm8diHn0JbqRycJi6w0Ms=
 github.com/nrdcg/auroradns v1.0.1 h1:m/kBq83Xvy3cU261MOknd8BdnOk12q4lAWM+kOdsC2Y=
 github.com/nrdcg/auroradns v1.0.1/go.mod h1:y4pc0i9QXYlFCWrhWrUSIETnZgrf4KuwjDIWmmXo3JI=
@@ -489,7 +488,6 @@ go.opencensus.io v0.22.2/go.mod h1:yxeiOL68Rb0Xd1ddK5vPZ/oVn4vY4Ynel7k9FzqtOIw=
 go.opencensus.io v0.22.3 h1:8sGtKOrtQqkN1bp2AtX+misvLIlOmsEsNd+9NIcPEm8=
 go.opencensus.io v0.22.3/go.mod h1:yxeiOL68Rb0Xd1ddK5vPZ/oVn4vY4Ynel7k9FzqtOIw=
 go.uber.org/atomic v1.3.2/go.mod h1:gD2HeocX3+yG+ygLZcrzQJaqmWj9AIm7n08wl/qW/PE=
-go.uber.org/atomic v1.4.0 h1:cxzIVoETapQEqDhQu3QfnvXAV4AlzcvUCxkVUFw3+EU=
 go.uber.org/atomic v1.4.0/go.mod h1:gD2HeocX3+yG+ygLZcrzQJaqmWj9AIm7n08wl/qW/PE=
 go.uber.org/multierr v1.1.0/go.mod h1:wR5kodmAFQ0UK8QlbwjlSNy0Z68gJhDJUG5sjR94q/0=
 go.uber.org/ratelimit v0.0.0-20180316092928-c15da0234277 h1:d9qaMM+ODpCq+9We41//fu/sHsTnXcrqd1en3x+GKy4=

internal/dnsdocs/generator.go

@@ -9,7 +9,6 @@ import (
 	"fmt"
 	"go/format"
 	"io"
-	"io/ioutil"
 	"log"
 	"os"
 	"path/filepath"
@@ -201,7 +200,7 @@ func generateReadMe(models *Providers) error {
 		return errors.New("missing end tag")
 	}
 
-	return ioutil.WriteFile(readmePath, buffer.Bytes(), 0o666)
+	return os.WriteFile(readmePath, buffer.Bytes(), 0o666)
 }
 
 func extractTableData(models *Providers) (int, [][]string) {

internal/release.go

@@ -7,7 +7,6 @@ import (
 	"go/format"
 	"go/parser"
 	"go/token"
-	"io/ioutil"
 	"log"
 	"os"
 	"regexp"
@@ -186,7 +185,7 @@ func writeUserAgentFile(filename, version, comment string) error {
 		return err
 	}
 
-	return ioutil.WriteFile(filename, source, 0o644)
+	return os.WriteFile(filename, source, 0o644)
 }
 
 func bumpVersion(userAgent, mode string) (string, error) {

lego/client_config.go

@@ -4,7 +4,6 @@ import (
 	"crypto/tls"
 	"crypto/x509"
 	"fmt"
-	"io/ioutil"
 	"net"
 	"net/http"
 	"os"
@@ -88,7 +87,7 @@ func createDefaultHTTPClient() *http.Client {
 // caCertificatesEnvVar value then initCertPool will panic.
 func initCertPool() *x509.CertPool {
 	if customCACertsPath := os.Getenv(caCertificatesEnvVar); customCACertsPath != "" {
-		customCAs, err := ioutil.ReadFile(customCACertsPath)
+		customCAs, err := os.ReadFile(customCACertsPath)
 		if err != nil {
 			panic(fmt.Sprintf("error reading %s=%q: %v",
 				caCertificatesEnvVar, customCACertsPath, err))

platform/config/env/env.go

@@ -3,7 +3,6 @@ package env
 import (
 	"errors"
 	"fmt"
-	"io/ioutil"
 	"os"
 	"strconv"
 	"strings"
@@ -155,7 +154,7 @@ func GetOrFile(envVar string) string {
 		return envVarValue
 	}
 
-	fileContents, err := ioutil.ReadFile(fileVarValue)
+	fileContents, err := os.ReadFile(fileVarValue)
 	if err != nil {
 		log.Printf("Failed to read the file %s (defined by env var %s): %s", fileVarValue, fileVar, err)
 		return ""

platform/config/env/env_test.go

@@ -313,7 +313,7 @@ func TestGetOrFile_ReadsFiles(t *testing.T) {
 			require.NoError(t, err)
 			defer os.Remove(file.Name())
 
-			err = ioutil.WriteFile(file.Name(), []byte("lego_file\n"), 0o644)
+			err = os.WriteFile(file.Name(), []byte("lego_file\n"), 0o644)
 			require.NoError(t, err)
 
 			err = os.Setenv(varEnvFileName, file.Name())
@@ -340,7 +340,7 @@ func TestGetOrFile_PrefersEnvVars(t *testing.T) {
 	require.NoError(t, err)
 	defer os.Remove(file.Name())
 
-	err = ioutil.WriteFile(file.Name(), []byte("lego_file"), 0o644)
+	err = os.WriteFile(file.Name(), []byte("lego_file"), 0o644)
 	require.NoError(t, err)
 
 	err = os.Setenv(varEnvFileName, file.Name())

providers/dns/allinkl/internal/client.go

@@ -6,7 +6,7 @@ import (
 	"encoding/json"
 	"encoding/xml"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"strconv"
 	"strings"
@@ -82,11 +82,11 @@ func (c Client) Authentication(sessionLifetime int, sessionUpdateLifetime bool)
 	defer func() { _ = resp.Body.Close() }()
 
 	if resp.StatusCode != http.StatusOK {
-		data, _ := ioutil.ReadAll(resp.Body)
+		data, _ := io.ReadAll(resp.Body)
 		return "", fmt.Errorf("invalid status code: %d %s", resp.StatusCode, string(data))
 	}
 
-	data, err := ioutil.ReadAll(resp.Body)
+	data, err := io.ReadAll(resp.Body)
 	if err != nil {
 		return "", fmt.Errorf("response read: %w", err)
 	}
@@ -206,11 +206,11 @@ func (c Client) do(credentialToken, action string, requestParams interface{}) (*
 	defer func() { _ = resp.Body.Close() }()
 
 	if resp.StatusCode != http.StatusOK {
-		data, _ := ioutil.ReadAll(resp.Body)
+		data, _ := io.ReadAll(resp.Body)
 		return nil, fmt.Errorf("invalid status code: %d %s", resp.StatusCode, string(data))
 	}
 
-	data, err := ioutil.ReadAll(resp.Body)
+	data, err := io.ReadAll(resp.Body)
 	if err != nil {
 		return nil, fmt.Errorf("response read: %w", err)
 	}

providers/dns/arvancloud/internal/client.go

@@ -5,7 +5,6 @@ import (
 	"encoding/json"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"net/http"
 	"net/url"
 	"path"
@@ -70,7 +69,7 @@ func (c *Client) getRecords(domain, search string) ([]DNSRecord, error) {
 
 	defer func() { _ = resp.Body.Close() }()
 
-	body, err := ioutil.ReadAll(resp.Body)
+	body, err := io.ReadAll(resp.Body)
 	if err != nil {
 		return nil, fmt.Errorf("failed to read response body: %w", err)
 	}
@@ -113,7 +112,7 @@ func (c *Client) CreateRecord(domain string, record DNSRecord) (*DNSRecord, erro
 		return nil, err
 	}
 
-	body, err := ioutil.ReadAll(resp.Body)
+	body, err := io.ReadAll(resp.Body)
 	if err != nil {
 		return nil, fmt.Errorf("failed to read response body: %w", err)
 	}
@@ -151,7 +150,7 @@ func (c *Client) DeleteRecord(domain, id string) error {
 	}
 
 	if resp.StatusCode != http.StatusOK {
-		body, _ := ioutil.ReadAll(resp.Body)
+		body, _ := io.ReadAll(resp.Body)
 		return fmt.Errorf("could not delete record %s; Domain: %s; Status: %s; Body: %s", id, domain, resp.Status, string(body))
 	}
 

providers/dns/auroradns/auroradns_test.go

@@ -2,7 +2,7 @@ package auroradns
 
 import (
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"net/http/httptest"
 	"testing"
@@ -163,7 +163,7 @@ func TestDNSProvider_Present(t *testing.T) {
 		assert.Equal(t, http.MethodPost, r.Method)
 		assert.Equal(t, "application/json", r.Header.Get("Content-Type"), "Content-Type")
 
-		reqBody, err := ioutil.ReadAll(r.Body)
+		reqBody, err := io.ReadAll(r.Body)
 		require.NoError(t, err)
 		assert.Equal(t, `{"type":"TXT","name":"_acme-challenge","content":"w6uP8Tcg6K2QR905Rms8iXTlksL6OD1KOWBxTK7wxPI","ttl":300}`, string(reqBody))
 

providers/dns/autodns/client.go

@@ -5,7 +5,6 @@ import (
 	"encoding/json"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"net/http"
 	"path"
 	"strconv"
@@ -132,7 +131,7 @@ func (d *DNSProvider) sendRequest(req *http.Request, result interface{}) error {
 		return nil
 	}
 
-	raw, err := ioutil.ReadAll(resp.Body)
+	raw, err := io.ReadAll(resp.Body)
 	if err != nil {
 		return err
 	}
@@ -155,7 +154,7 @@ func checkResponse(resp *http.Response) error {
 
 	defer func() { _ = resp.Body.Close() }()
 
-	raw, err := ioutil.ReadAll(resp.Body)
+	raw, err := io.ReadAll(resp.Body)
 	if err != nil {
 		return fmt.Errorf("unable to read body: status code=%d, error=%w", resp.StatusCode, err)
 	}

providers/dns/azure/azure.go

@@ -6,7 +6,7 @@ import (
 	"context"
 	"errors"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"strings"
 	"time"
@@ -319,7 +319,7 @@ func getMetadata(config *Config, field string) (string, error) {
 	}
 	defer resp.Body.Close()
 
-	respBody, err := ioutil.ReadAll(resp.Body)
+	respBody, err := io.ReadAll(resp.Body)
 	if err != nil {
 		return "", err
 	}

providers/dns/bluecat/bluecat.go

@@ -5,7 +5,7 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"strconv"
 	"time"
@@ -139,7 +139,7 @@ func (d *DNSProvider) Present(domain, token, keyAuth string) error {
 	}
 	defer resp.Body.Close()
 
-	addTxtBytes, _ := ioutil.ReadAll(resp.Body)
+	addTxtBytes, _ := io.ReadAll(resp.Body)
 	addTxtResp := string(addTxtBytes)
 	// addEntity responds only with body text containing the ID of the created record
 	_, err = strconv.ParseUint(addTxtResp, 10, 64)

providers/dns/bluecat/client.go

@@ -4,7 +4,7 @@ import (
 	"bytes"
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"regexp"
 	"strconv"
@@ -41,7 +41,7 @@ func (d *DNSProvider) login() error {
 	}
 	defer resp.Body.Close()
 
-	authBytes, err := ioutil.ReadAll(resp.Body)
+	authBytes, err := io.ReadAll(resp.Body)
 	if err != nil {
 		return fmt.Errorf("bluecat: %w", err)
 	}
@@ -74,7 +74,7 @@ func (d *DNSProvider) logout() error {
 		return fmt.Errorf("bluecat: request failed to delete session with HTTP status code %d", resp.StatusCode)
 	}
 
-	authBytes, err := ioutil.ReadAll(resp.Body)
+	authBytes, err := io.ReadAll(resp.Body)
 	if err != nil {
 		return err
 	}
@@ -240,7 +240,7 @@ func (d *DNSProvider) sendRequest(method, resource string, payload interface{},
 	}
 
 	if resp.StatusCode >= 400 {
-		errBytes, _ := ioutil.ReadAll(resp.Body)
+		errBytes, _ := io.ReadAll(resp.Body)
 		errResp := string(errBytes)
 		return nil, fmt.Errorf("bluecat: request failed with HTTP status code %d\n Full message: %s",
 			resp.StatusCode, errResp)

providers/dns/checkdomain/client.go

@@ -6,7 +6,6 @@ import (
 	"errors"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"net/http"
 	"strconv"
 	"strings"
@@ -385,7 +384,7 @@ func (d *DNSProvider) sendRequest(req *http.Request, result interface{}) error {
 		return nil
 	}
 
-	raw, err := ioutil.ReadAll(resp.Body)
+	raw, err := io.ReadAll(resp.Body)
 	if err != nil {
 		return err
 	}
@@ -408,7 +407,7 @@ func checkResponse(resp *http.Response) error {
 
 	defer func() { _ = resp.Body.Close() }()
 
-	raw, err := ioutil.ReadAll(resp.Body)
+	raw, err := io.ReadAll(resp.Body)
 	if err != nil {
 		return fmt.Errorf("unable to read body: status code=%d, error=%w", resp.StatusCode, err)
 	}

providers/dns/checkdomain/client_test.go

@@ -3,7 +3,7 @@ package checkdomain
 import (
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"net/http/httptest"
 	"net/url"
@@ -99,7 +99,7 @@ func Test_createRecord(t *testing.T) {
 			return
 		}
 
-		content, err := ioutil.ReadAll(req.Body)
+		content, err := io.ReadAll(req.Body)
 		if err != nil {
 			http.Error(rw, err.Error(), http.StatusBadRequest)
 			return

providers/dns/clouddns/internal/client.go

@@ -6,7 +6,6 @@ import (
 	"errors"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"net/http"
 )
 
@@ -235,7 +234,7 @@ func (c *Client) doRequest(req *http.Request) ([]byte, error) {
 		return nil, readError(req, resp)
 	}
 
-	content, err := ioutil.ReadAll(resp.Body)
+	content, err := io.ReadAll(resp.Body)
 	if err != nil {
 		return nil, err
 	}
@@ -243,7 +242,7 @@ func (c *Client) doRequest(req *http.Request) ([]byte, error) {
 }
 
 func readError(req *http.Request, resp *http.Response) error {
-	content, err := ioutil.ReadAll(resp.Body)
+	content, err := io.ReadAll(resp.Body)
 	if err != nil {
 		return errors.New(toUnreadableBodyMessage(req, content))
 	}

providers/dns/cloudns/internal/client.go

@@ -4,7 +4,7 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"net/url"
 	"path"
@@ -278,7 +278,7 @@ func (c *Client) doRequest(method string, uri *url.URL) (json.RawMessage, error)
 
 	defer resp.Body.Close()
 
-	content, err := ioutil.ReadAll(resp.Body)
+	content, err := io.ReadAll(resp.Body)
 	if err != nil {
 		return nil, errors.New(toUnreadableBodyMessage(req, content))
 	}

providers/dns/cloudxns/internal/client.go

@@ -7,7 +7,7 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"strconv"
 	"strings"
@@ -164,7 +164,7 @@ func (c *Client) doRequest(method, uri string, body []byte) (json.RawMessage, er
 
 	defer resp.Body.Close()
 
-	content, err := ioutil.ReadAll(resp.Body)
+	content, err := io.ReadAll(resp.Body)
 	if err != nil {
 		return nil, fmt.Errorf("CloudXNS: %s", toUnreadableBodyMessage(req, content))
 	}

providers/dns/cloudxns/internal/client_test.go

@@ -3,7 +3,7 @@ package internal
 import (
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"net/http/httptest"
 	"testing"
@@ -267,7 +267,7 @@ func TestClientAddTxtRecord(t *testing.T) {
 
 			server := httptest.NewServer(http.HandlerFunc(func(rw http.ResponseWriter, req *http.Request) {
 				assert.NotNil(t, req.Body)
-				content, err := ioutil.ReadAll(req.Body)
+				content, err := io.ReadAll(req.Body)
 				require.NoError(t, err)
 
 				assert.Equal(t, test.expected, string(content))

providers/dns/conoha/internal/client.go

@@ -5,7 +5,7 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 )
 
@@ -182,7 +182,7 @@ func (c *Client) do(method, path string, payload, result interface{}) error {
 	}
 
 	if resp.StatusCode != http.StatusOK {
-		respBody, err := ioutil.ReadAll(resp.Body)
+		respBody, err := io.ReadAll(resp.Body)
 		if err != nil {
 			return err
 		}
@@ -192,7 +192,7 @@ func (c *Client) do(method, path string, payload, result interface{}) error {
 	}
 
 	if result != nil {
-		respBody, err := ioutil.ReadAll(resp.Body)
+		respBody, err := io.ReadAll(resp.Body)
 		if err != nil {
 			return err
 		}

providers/dns/conoha/internal/client_test.go

@@ -2,7 +2,7 @@ package internal
 
 import (
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"net/http/httptest"
 	"testing"
@@ -151,7 +151,7 @@ func TestClient_CreateRecord(t *testing.T) {
 					return
 				}
 
-				raw, err := ioutil.ReadAll(req.Body)
+				raw, err := io.ReadAll(req.Body)
 				if err != nil {
 					http.Error(rw, err.Error(), http.StatusBadRequest)
 					return

providers/dns/constellix/internal/client.go

@@ -3,7 +3,7 @@ package internal
 import (
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"net/url"
 	"path"
@@ -63,7 +63,7 @@ func (c *Client) do(req *http.Request, v interface{}) error {
 		return err
 	}
 
-	raw, err := ioutil.ReadAll(resp.Body)
+	raw, err := io.ReadAll(resp.Body)
 	if err != nil {
 		return fmt.Errorf("failed to read body: %w", err)
 	}
@@ -94,7 +94,7 @@ func checkResponse(resp *http.Response) error {
 		return nil
 	}
 
-	data, err := ioutil.ReadAll(resp.Body)
+	data, err := io.ReadAll(resp.Body)
 	if err == nil && data != nil {
 		msg := &APIError{StatusCode: resp.StatusCode}
 

providers/dns/constellix/internal/txtrecords_test.go

@@ -3,7 +3,6 @@ package internal
 import (
 	"encoding/json"
 	"io"
-	"io/ioutil"
 	"net/http"
 	"os"
 	"testing"
@@ -42,7 +41,7 @@ func TestTxtRecordService_Create(t *testing.T) {
 	recordsJSON, err := json.Marshal(records)
 	require.NoError(t, err)
 
-	expectedContent, err := ioutil.ReadFile("./fixtures/records-Create.json")
+	expectedContent, err := os.ReadFile("./fixtures/records-Create.json")
 	require.NoError(t, err)
 
 	assert.JSONEq(t, string(expectedContent), string(recordsJSON))
@@ -78,7 +77,7 @@ func TestTxtRecordService_GetAll(t *testing.T) {
 	recordsJSON, err := json.Marshal(records)
 	require.NoError(t, err)
 
-	expectedContent, err := ioutil.ReadFile("./fixtures/records-GetAll.json")
+	expectedContent, err := os.ReadFile("./fixtures/records-GetAll.json")
 	require.NoError(t, err)
 
 	assert.JSONEq(t, string(expectedContent), string(recordsJSON))
@@ -211,7 +210,7 @@ func TestTxtRecordService_Search(t *testing.T) {
 	recordsJSON, err := json.Marshal(records)
 	require.NoError(t, err)
 
-	expectedContent, err := ioutil.ReadFile("./fixtures/records-Search.json")
+	expectedContent, err := os.ReadFile("./fixtures/records-Search.json")
 	require.NoError(t, err)
 
 	assert.JSONEq(t, string(expectedContent), string(recordsJSON))

providers/dns/digitalocean/client.go

@@ -6,7 +6,6 @@ import (
 	"errors"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"net/http"
 
 	"github.com/go-acme/lego/v4/challenge/dns01"
@@ -85,7 +84,7 @@ func (d *DNSProvider) addTxtRecord(fqdn, value string) (*txtRecordResponse, erro
 		return nil, readError(req, resp)
 	}
 
-	content, err := ioutil.ReadAll(resp.Body)
+	content, err := io.ReadAll(resp.Body)
 	if err != nil {
 		return nil, errors.New(toUnreadableBodyMessage(req, content))
 	}
@@ -113,7 +112,7 @@ func (d *DNSProvider) newRequest(method, reqURL string, body io.Reader) (*http.R
 }
 
 func readError(req *http.Request, resp *http.Response) error {
-	content, err := ioutil.ReadAll(resp.Body)
+	content, err := io.ReadAll(resp.Body)
 	if err != nil {
 		return errors.New(toUnreadableBodyMessage(req, content))
 	}

providers/dns/digitalocean/digitalocean_test.go

@@ -2,7 +2,7 @@ package digitalocean
 
 import (
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"net/http/httptest"
 	"testing"
@@ -117,7 +117,7 @@ func TestDNSProvider_Present(t *testing.T) {
 		assert.Equal(t, "application/json", r.Header.Get("Content-Type"), "Content-Type")
 		assert.Equal(t, "Bearer asdf1234", r.Header.Get("Authorization"), "Authorization")
 
-		reqBody, err := ioutil.ReadAll(r.Body)
+		reqBody, err := io.ReadAll(r.Body)
 		if err != nil {
 			http.Error(w, err.Error(), http.StatusInternalServerError)
 		}

providers/dns/dnsmadeeasy/internal/client.go

@@ -8,7 +8,7 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"time"
 )
@@ -153,7 +153,7 @@ func (c *Client) sendRequest(method, resource string, payload interface{}) (*htt
 	}
 
 	if resp.StatusCode > 299 {
-		body, err := ioutil.ReadAll(resp.Body)
+		body, err := io.ReadAll(resp.Body)
 		if err != nil {
 			return nil, fmt.Errorf("request failed with HTTP status code %d", resp.StatusCode)
 		}

providers/dns/dode/client.go

@@ -3,7 +3,7 @@ package dode
 import (
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/url"
 
 	"github.com/go-acme/lego/v4/challenge/dns01"
@@ -38,7 +38,7 @@ func (d *DNSProvider) updateTxtRecord(fqdn, token, txt string, clear bool) error
 	}
 	defer response.Body.Close()
 
-	bodyBytes, err := ioutil.ReadAll(response.Body)
+	bodyBytes, err := io.ReadAll(response.Body)
 	if err != nil {
 		return err
 	}

providers/dns/domeneshop/internal/client.go

@@ -4,7 +4,7 @@ import (
 	"bytes"
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"time"
 )
@@ -119,7 +119,7 @@ func (c *Client) doRequest(method string, endpoint string, reqBody []byte, v int
 	defer func() { _ = resp.Body.Close() }()
 
 	if resp.StatusCode >= http.StatusBadRequest {
-		respBody, err := ioutil.ReadAll(resp.Body)
+		respBody, err := io.ReadAll(resp.Body)
 		if err != nil {
 			return err
 		}

providers/dns/dreamhost/client.go

@@ -3,7 +3,7 @@ package dreamhost
 import (
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/url"
 
 	"github.com/go-acme/lego/v4/log"
@@ -53,7 +53,7 @@ func (d *DNSProvider) updateTxtRecord(u fmt.Stringer) error {
 		return fmt.Errorf("request failed with HTTP status code %d", resp.StatusCode)
 	}
 
-	raw, err := ioutil.ReadAll(resp.Body)
+	raw, err := io.ReadAll(resp.Body)
 	if err != nil {
 		return fmt.Errorf("failed to read body: %w", err)
 	}

providers/dns/duckdns/client.go

@@ -2,7 +2,7 @@ package duckdns
 
 import (
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/url"
 	"strconv"
 	"strings"
@@ -35,7 +35,7 @@ func (d *DNSProvider) updateTxtRecord(domain, token, txt string, clear bool) err
 	}
 	defer response.Body.Close()
 
-	bodyBytes, err := ioutil.ReadAll(response.Body)
+	bodyBytes, err := io.ReadAll(response.Body)
 	if err != nil {
 		return err
 	}

providers/dns/dynu/internal/client.go

@@ -6,7 +6,6 @@ import (
 	"errors"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"net/http"
 	"net/url"
 	"path"
@@ -164,7 +163,7 @@ func (c Client) doRetry(method, uri string, body []byte, data interface{}) error
 
 	defer func() { _ = resp.Body.Close() }()
 
-	all, err := ioutil.ReadAll(resp.Body)
+	all, err := io.ReadAll(resp.Body)
 	if err != nil {
 		return fmt.Errorf("failed to read response body: %w", err)
 	}

providers/dns/easydns/client.go

@@ -4,7 +4,7 @@ import (
 	"bytes"
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"path"
 )
@@ -81,7 +81,7 @@ func (d *DNSProvider) doRequest(method, resource string, requestMsg, responseMsg
 	defer response.Body.Close()
 
 	if response.StatusCode >= http.StatusBadRequest {
-		body, err := ioutil.ReadAll(response.Body)
+		body, err := io.ReadAll(response.Body)
 		if err != nil {
 			return fmt.Errorf("%d: failed to read response body: %w", response.StatusCode, err)
 		}

providers/dns/easydns/easydns_test.go

@@ -2,7 +2,7 @@ package easydns
 
 import (
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"net/http/httptest"
 	"net/url"
@@ -152,7 +152,7 @@ func TestDNSProvider_Present(t *testing.T) {
 		assert.Equal(t, "application/json", r.Header.Get("Content-Type"), "Content-Type")
 		assert.Equal(t, "Basic VE9LRU46U0VDUkVU", r.Header.Get("Authorization"), "Authorization")
 
-		reqBody, err := ioutil.ReadAll(r.Body)
+		reqBody, err := io.ReadAll(r.Body)
 		if err != nil {
 			http.Error(w, err.Error(), http.StatusInternalServerError)
 		}

providers/dns/gandi/client.go

@@ -6,7 +6,6 @@ import (
 	"errors"
 	"fmt"
 	"io"
-	"io/ioutil"
 )
 
 // types for XML-RPC method calls and parameters
@@ -314,7 +313,7 @@ func (d *DNSProvider) httpPost(url, bodyType string, body io.Reader) ([]byte, er
 	}
 	defer resp.Body.Close()
 
-	b, err := ioutil.ReadAll(resp.Body)
+	b, err := io.ReadAll(resp.Body)
 	if err != nil {
 		return nil, fmt.Errorf("HTTP Post Error: %w", err)
 	}

providers/dns/gandi/gandi_test.go

@@ -2,7 +2,6 @@ package gandi
 
 import (
 	"io"
-	"io/ioutil"
 	"net/http"
 	"net/http/httptest"
 	"regexp"
@@ -128,7 +127,7 @@ func TestDNSProvider(t *testing.T) {
 	fakeServer := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		require.Equal(t, "text/xml", r.Header.Get("Content-Type"), "invalid content type")
 
-		req, errS := ioutil.ReadAll(r.Body)
+		req, errS := io.ReadAll(r.Body)
 		require.NoError(t, errS)
 
 		req = regexpDate.ReplaceAllLiteral(req, []byte(`[ACME Challenge 01 Jan 16 00:00 +0000]`))

providers/dns/gandiv5/client.go

@@ -5,7 +5,7 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 
 	"github.com/go-acme/lego/v4/log"
@@ -191,7 +191,7 @@ func readBody(resp *http.Response) ([]byte, error) {
 
 	defer resp.Body.Close()
 
-	rawBody, err := ioutil.ReadAll(resp.Body)
+	rawBody, err := io.ReadAll(resp.Body)
 	if err != nil {
 		return nil, err
 	}

providers/dns/gandiv5/gandiv5_test.go

@@ -2,7 +2,7 @@ package gandiv5
 
 import (
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"net/http/httptest"
 	"regexp"
@@ -128,7 +128,7 @@ func TestDNSProvider(t *testing.T) {
 			return
 		}
 
-		body, errS := ioutil.ReadAll(req.Body)
+		body, errS := io.ReadAll(req.Body)
 		if errS != nil {
 			http.Error(rw, fmt.Sprintf(`{"message": "read body error: %v"}`, errS), http.StatusInternalServerError)
 			return

providers/dns/gcloud/googlecloud.go

@@ -5,8 +5,8 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
-	"io/ioutil"
 	"net/http"
+	"os"
 	"strconv"
 	"time"
 
@@ -145,7 +145,7 @@ func NewDNSProviderServiceAccount(saFile string) (*DNSProvider, error) {
 		return nil, errors.New("googlecloud: Service Account file missing")
 	}
 
-	saKey, err := ioutil.ReadFile(saFile)
+	saKey, err := os.ReadFile(saFile)
 	if err != nil {
 		return nil, fmt.Errorf("googlecloud: unable to read Service Account file: %w", err)
 	}

providers/dns/gcore/internal/client.go

@@ -5,7 +5,7 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"net/url"
 	"path"
@@ -142,7 +142,7 @@ func (c *Client) do(ctx context.Context, method, uri string, bodyParams interfac
 	defer func() { _ = resp.Body.Close() }()
 
 	if resp.StatusCode/100 != 2 {
-		all, _ := ioutil.ReadAll(resp.Body)
+		all, _ := io.ReadAll(resp.Body)
 
 		e := APIError{
 			StatusCode: resp.StatusCode,

providers/dns/godaddy/client.go

@@ -5,7 +5,6 @@ import (
 	"encoding/json"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"net/http"
 	"path"
 )
@@ -30,7 +29,7 @@ func (d *DNSProvider) getRecords(domainZone, rType, recordName string) ([]DNSRec
 	defer func() { _ = resp.Body.Close() }()
 
 	if resp.StatusCode != http.StatusOK {
-		bodyBytes, _ := ioutil.ReadAll(resp.Body)
+		bodyBytes, _ := io.ReadAll(resp.Body)
 		return nil, fmt.Errorf("could not get records: Domain: %s; Record: %s, Status: %v; Body: %s",
 			domainZone, recordName, resp.StatusCode, string(bodyBytes))
 	}
@@ -61,7 +60,7 @@ func (d *DNSProvider) updateTxtRecords(records []DNSRecord, domainZone, recordNa
 	defer func() { _ = resp.Body.Close() }()
 
 	if resp.StatusCode != http.StatusOK {
-		bodyBytes, _ := ioutil.ReadAll(resp.Body)
+		bodyBytes, _ := io.ReadAll(resp.Body)
 		return fmt.Errorf("could not create record %v; Status: %v; Body: %s", string(body), resp.StatusCode, string(bodyBytes))
 	}
 

providers/dns/hetzner/internal/client.go

@@ -5,7 +5,6 @@ import (
 	"encoding/json"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"net/http"
 	"net/url"
 	"path"
@@ -68,7 +67,7 @@ func (c *Client) getRecords(zoneID string) (*DNSRecords, error) {
 	defer func() { _ = resp.Body.Close() }()
 
 	if resp.StatusCode != http.StatusOK {
-		bodyBytes, _ := ioutil.ReadAll(resp.Body)
+		bodyBytes, _ := io.ReadAll(resp.Body)
 		return nil, fmt.Errorf("could not get records: zone ID: %s; Status: %s; Body: %s",
 			zoneID, resp.Status, string(bodyBytes))
 	}
@@ -101,7 +100,7 @@ func (c *Client) CreateRecord(record DNSRecord) error {
 	}
 
 	if resp.StatusCode != http.StatusOK {
-		bodyBytes, _ := ioutil.ReadAll(resp.Body)
+		bodyBytes, _ := io.ReadAll(resp.Body)
 		return fmt.Errorf("could not create record %s; Status: %s; Body: %s", string(body), resp.Status, string(bodyBytes))
 	}
 

providers/dns/hostingde/client.go

@@ -5,7 +5,7 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"time"
 
@@ -105,7 +105,7 @@ func (d *DNSProvider) post(uri string, request, response interface{}) ([]byte, e
 
 	defer resp.Body.Close()
 
-	content, err := ioutil.ReadAll(resp.Body)
+	content, err := io.ReadAll(resp.Body)
 	if err != nil {
 		return nil, errors.New(toUnreadableBodyMessage(uri, content))
 	}

providers/dns/hosttech/internal/client.go

@@ -4,7 +4,7 @@ import (
 	"bytes"
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"net/url"
 	"path"
@@ -198,7 +198,7 @@ func (c Client) do(req *http.Request) (json.RawMessage, error) {
 
 	switch resp.StatusCode {
 	case http.StatusOK, http.StatusCreated:
-		all, err := ioutil.ReadAll(resp.Body)
+		all, err := io.ReadAll(resp.Body)
 		if err != nil {
 			return nil, fmt.Errorf("read response: %w", err)
 		}
@@ -215,7 +215,7 @@ func (c Client) do(req *http.Request) (json.RawMessage, error) {
 		return nil, nil
 
 	default:
-		data, _ := ioutil.ReadAll(resp.Body)
+		data, _ := io.ReadAll(resp.Body)
 
 		e := APIError{StatusCode: resp.StatusCode}
 		err := json.Unmarshal(data, &e)

providers/dns/httpreq/httpreq.go

@@ -6,7 +6,7 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"net/url"
 	"path"
@@ -196,7 +196,7 @@ func (d *DNSProvider) doPost(uri string, msg interface{}) error {
 	defer resp.Body.Close()
 
 	if resp.StatusCode >= http.StatusBadRequest {
-		body, err := ioutil.ReadAll(resp.Body)
+		body, err := io.ReadAll(resp.Body)
 		if err != nil {
 			return fmt.Errorf("%d: failed to read response body: %w", resp.StatusCode, err)
 		}

providers/dns/hurricane/internal/client.go

@@ -4,7 +4,7 @@ import (
 	"bytes"
 	"context"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"log"
 	"net/http"
 	"net/url"
@@ -81,7 +81,7 @@ func (c *Client) UpdateTxtRecord(ctx context.Context, domain string, txt string)
 
 	defer func() { _ = resp.Body.Close() }()
 
-	bodyBytes, err := ioutil.ReadAll(resp.Body)
+	bodyBytes, err := io.ReadAll(resp.Body)
 	if err != nil {
 		return err
 	}

providers/dns/hyperone/internal/client.go

@@ -6,7 +6,6 @@ import (
 	"errors"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"net/http"
 	"net/url"
 	"path"
@@ -291,7 +290,7 @@ func (c *Client) do(req *http.Request, v interface{}) error {
 		return nil
 	}
 
-	raw, err := ioutil.ReadAll(resp.Body)
+	raw, err := io.ReadAll(resp.Body)
 	if err != nil {
 		return fmt.Errorf("failed to read body: %w", err)
 	}
@@ -316,7 +315,7 @@ func checkResponse(resp *http.Response) error {
 	}
 
 	// add response body to error message if not empty
-	responseBody, _ := ioutil.ReadAll(resp.Body)
+	responseBody, _ := io.ReadAll(resp.Body)
 	if len(responseBody) > 0 {
 		msg = fmt.Sprintf("%s: %s", msg, string(responseBody))
 	}

providers/dns/hyperone/internal/client_test.go

@@ -5,7 +5,6 @@ import (
 	"encoding/json"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"net/http"
 	"net/http/httptest"
 	"os"
@@ -186,7 +185,7 @@ type assertHandler func(http.ResponseWriter, *http.Request) (int, error)
 
 func hasReqBody(v interface{}) assertHandler {
 	return func(rw http.ResponseWriter, req *http.Request) (int, error) {
-		reqBody, err := ioutil.ReadAll(req.Body)
+		reqBody, err := io.ReadAll(req.Body)
 		if err != nil {
 			return http.StatusBadRequest, err
 		}

providers/dns/infomaniak/internal/client.go

@@ -5,7 +5,6 @@ import (
 	"encoding/json"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"net/http"
 	"net/url"
 	"path"
@@ -143,7 +142,7 @@ func (c *Client) do(req *http.Request) (*APIResponse, error) {
 
 	defer func() { _ = rawResp.Body.Close() }()
 
-	content, err := ioutil.ReadAll(rawResp.Body)
+	content, err := io.ReadAll(rawResp.Body)
 	if err != nil {
 		return nil, fmt.Errorf("failed to read the response body, status code: %d", rawResp.StatusCode)
 	}

providers/dns/infomaniak/internal/client_test.go

@@ -2,7 +2,7 @@ package internal
 
 import (
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"net/http/httptest"
 	"testing"
@@ -35,7 +35,7 @@ func TestClient_CreateDNSRecord(t *testing.T) {
 			return
 		}
 
-		raw, err := ioutil.ReadAll(req.Body)
+		raw, err := io.ReadAll(req.Body)
 		if err != nil {
 			http.Error(rw, err.Error(), http.StatusBadRequest)
 			return

providers/dns/internal/rimuhosting/client.go

@@ -3,7 +3,7 @@ package rimuhosting
 import (
 	"encoding/xml"
 	"errors"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"net/url"
 	"regexp"
@@ -132,7 +132,7 @@ func (c Client) do(params, data interface{}) error {
 
 	defer func() { _ = resp.Body.Close() }()
 
-	all, err := ioutil.ReadAll(resp.Body)
+	all, err := io.ReadAll(resp.Body)
 	if err != nil {
 		return err
 	}

providers/dns/internal/selectel/client.go

@@ -4,7 +4,7 @@ import (
 	"bytes"
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"strings"
 )
@@ -149,7 +149,7 @@ func checkResponse(resp *http.Response) error {
 			return fmt.Errorf("request failed with status code %d and empty body", resp.StatusCode)
 		}
 
-		body, err := ioutil.ReadAll(resp.Body)
+		body, err := io.ReadAll(resp.Body)
 		if err != nil {
 			return err
 		}
@@ -168,7 +168,7 @@ func checkResponse(resp *http.Response) error {
 }
 
 func unmarshalBody(resp *http.Response, to interface{}) error {
-	body, err := ioutil.ReadAll(resp.Body)
+	body, err := io.ReadAll(resp.Body)
 	if err != nil {
 		return err
 	}

providers/dns/internetbs/internal/client.go

@@ -3,9 +3,10 @@ package internal
 import (
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"net/url"
+	"os"
 	"path"
 	"path/filepath"
 	"strings"
@@ -110,7 +111,7 @@ func (c Client) do(action string, params interface{}, response interface{}) erro
 	defer func() { _ = resp.Body.Close() }()
 
 	if resp.StatusCode/100 != 2 {
-		data, _ := ioutil.ReadAll(resp.Body)
+		data, _ := io.ReadAll(resp.Body)
 		return fmt.Errorf("status code: %d, %s", resp.StatusCode, string(data))
 	}
 
@@ -122,7 +123,7 @@ func (c Client) do(action string, params interface{}, response interface{}) erro
 }
 
 func dump(endpoint *url.URL, resp *http.Response, response interface{}) error {
-	data, err := ioutil.ReadAll(resp.Body)
+	data, err := io.ReadAll(resp.Body)
 	if err != nil {
 		return err
 	}
@@ -131,7 +132,7 @@ func dump(endpoint *url.URL, resp *http.Response, response interface{}) error {
 		return !unicode.IsLetter(r) && !unicode.IsNumber(r)
 	})
 
-	err = ioutil.WriteFile(filepath.Join("fixtures", strings.Join(fields, "_")+".json"), data, 0o666)
+	err = os.WriteFile(filepath.Join("fixtures", strings.Join(fields, "_")+".json"), data, 0o666)
 	if err != nil {
 		return err
 	}

providers/dns/ionos/internal/client.go

@@ -6,7 +6,6 @@ import (
 	"encoding/json"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"net/http"
 	"net/url"
 	"path"
@@ -168,7 +167,7 @@ func (c *Client) makeRequest(ctx context.Context, method, uri string, body io.Re
 }
 
 func readError(body io.Reader, statusCode int) error {
-	bodyBytes, _ := ioutil.ReadAll(body)
+	bodyBytes, _ := io.ReadAll(body)
 
 	cErr := &ClientError{StatusCode: statusCode}
 

providers/dns/joker/internal/dmapi/client.go

@@ -5,7 +5,7 @@ package dmapi
 import (
 	"errors"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"net/url"
 	"path"
@@ -149,7 +149,7 @@ func (c *Client) postRequest(cmd string, data url.Values) (*Response, error) {
 	}
 	defer resp.Body.Close()
 
-	body, err := ioutil.ReadAll(resp.Body)
+	body, err := io.ReadAll(resp.Body)
 	if err != nil {
 		return nil, err
 	}

providers/dns/joker/internal/svc/client.go

@@ -4,7 +4,7 @@ package svc
 
 import (
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"strings"
 
@@ -59,7 +59,7 @@ func (c *Client) Send(zone, label, value string) error {
 		return err
 	}
 
-	all, err := ioutil.ReadAll(resp.Body)
+	all, err := io.ReadAll(resp.Body)
 	if err != nil {
 		return err
 	}

providers/dns/joker/internal/svc/client_test.go

@@ -2,7 +2,7 @@ package svc
 
 import (
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"net/http/httptest"
 	"testing"
@@ -20,7 +20,7 @@ func TestClient_Send(t *testing.T) {
 			return
 		}
 
-		all, _ := ioutil.ReadAll(req.Body)
+		all, _ := io.ReadAll(req.Body)
 
 		if string(all) != "label=_acme-challenge&password=secret&type=TXT&username=test&value=123&zone=example.com" {
 			http.Error(rw, fmt.Sprintf("invalid request: %q", string(all)), http.StatusBadRequest)
@@ -54,7 +54,7 @@ func TestClient_Send_empty(t *testing.T) {
 			return
 		}
 
-		all, _ := ioutil.ReadAll(req.Body)
+		all, _ := io.ReadAll(req.Body)
 
 		if string(all) != "label=_acme-challenge&password=secret&type=TXT&username=test&value=&zone=example.com" {
 			http.Error(rw, fmt.Sprintf("invalid request: %q", string(all)), http.StatusBadRequest)

providers/dns/liquidweb/liquidweb_test.go

@@ -2,7 +2,7 @@ package liquidweb
 
 import (
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"net/http/httptest"
 	"testing"
@@ -184,7 +184,7 @@ func TestDNSProvider_Present(t *testing.T) {
 		assert.Equal(t, "tacoman", password)
 		assert.True(t, ok)
 
-		reqBody, err := ioutil.ReadAll(r.Body)
+		reqBody, err := io.ReadAll(r.Body)
 		if err != nil {
 			http.Error(w, err.Error(), http.StatusInternalServerError)
 			return

providers/dns/loopia/internal/client.go

@@ -6,7 +6,6 @@ import (
 	"errors"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"net/http"
 	"strings"
 	"time"
@@ -167,7 +166,7 @@ func (c *Client) httpPost(url string, bodyType string, body io.Reader) ([]byte,
 		return nil, fmt.Errorf("HTTP Post Error: %d", resp.StatusCode)
 	}
 
-	b, err := ioutil.ReadAll(resp.Body)
+	b, err := io.ReadAll(resp.Body)
 	if err != nil {
 		return nil, fmt.Errorf("HTTP Post Error: %w", err)
 	}

providers/dns/loopia/internal/client_test.go

@@ -3,7 +3,7 @@ package internal
 import (
 	"encoding/xml"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"net/http/httptest"
 	"testing"
@@ -210,7 +210,7 @@ func TestClient_GetZoneRecord(t *testing.T) {
 
 func TestClient_rpcCall_404(t *testing.T) {
 	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-		_, err := ioutil.ReadAll(r.Body)
+		_, err := io.ReadAll(r.Body)
 		if err != nil {
 			http.Error(w, err.Error(), http.StatusBadRequest)
 			return
@@ -243,7 +243,7 @@ func TestClient_rpcCall_404(t *testing.T) {
 
 func TestClient_rpcCall_RPCError(t *testing.T) {
 	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-		_, err := ioutil.ReadAll(r.Body)
+		_, err := io.ReadAll(r.Body)
 		if err != nil {
 			http.Error(w, err.Error(), http.StatusBadRequest)
 			return
@@ -310,7 +310,7 @@ func createFakeServer(t *testing.T, serverResponses map[string]string) string {
 			return
 		}
 
-		req, err := ioutil.ReadAll(r.Body)
+		req, err := io.ReadAll(r.Body)
 		if err != nil {
 			http.Error(w, err.Error(), http.StatusBadRequest)
 			return

providers/dns/luadns/internal/client.go

@@ -5,7 +5,6 @@ import (
 	"encoding/json"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"net/http"
 )
 
@@ -42,7 +41,7 @@ func (d *Client) ListZones() ([]DNSZone, error) {
 	defer func() { _ = resp.Body.Close() }()
 
 	if resp.StatusCode != http.StatusOK {
-		bodyBytes, _ := ioutil.ReadAll(resp.Body)
+		bodyBytes, _ := io.ReadAll(resp.Body)
 
 		var errResp errorResponse
 		err = json.Unmarshal(bodyBytes, &errResp)
@@ -80,7 +79,7 @@ func (d *Client) CreateRecord(zone DNSZone, newRecord DNSRecord) (*DNSRecord, er
 	defer func() { _ = resp.Body.Close() }()
 
 	if resp.StatusCode != http.StatusOK {
-		bodyBytes, _ := ioutil.ReadAll(resp.Body)
+		bodyBytes, _ := io.ReadAll(resp.Body)
 
 		var errResp errorResponse
 		err = json.Unmarshal(bodyBytes, &errResp)
@@ -120,7 +119,7 @@ func (d *Client) DeleteRecord(record *DNSRecord) error {
 	defer func() { _ = resp.Body.Close() }()
 
 	if resp.StatusCode != http.StatusOK {
-		bodyBytes, _ := ioutil.ReadAll(resp.Body)
+		bodyBytes, _ := io.ReadAll(resp.Body)
 
 		var errResp errorResponse
 		err = json.Unmarshal(bodyBytes, &errResp)

providers/dns/mydnsjp/client.go

@@ -2,7 +2,7 @@ package mydnsjp
 
 import (
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"net/url"
 	"strings"
@@ -23,7 +23,7 @@ func (d *DNSProvider) doRequest(domain, value, cmd string) error {
 
 	if resp.StatusCode >= 400 {
 		var content []byte
-		content, err = ioutil.ReadAll(resp.Body)
+		content, err = io.ReadAll(resp.Body)
 		if err != nil {
 			return err
 		}

providers/dns/mythicbeasts/client.go

@@ -5,7 +5,7 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"path"
 	"strings"
@@ -83,7 +83,7 @@ func (d *DNSProvider) login() error {
 
 	defer func() { _ = resp.Body.Close() }()
 
-	body, err := ioutil.ReadAll(resp.Body)
+	body, err := io.ReadAll(resp.Body)
 	if err != nil {
 		return fmt.Errorf("login: %w", err)
 	}
@@ -159,7 +159,7 @@ func (d *DNSProvider) createTXTRecord(zone, leaf, value string) error {
 
 	defer func() { _ = resp.Body.Close() }()
 
-	body, err := ioutil.ReadAll(resp.Body)
+	body, err := io.ReadAll(resp.Body)
 	if err != nil {
 		return fmt.Errorf("createTXTRecord: %w", err)
 	}
@@ -211,7 +211,7 @@ func (d *DNSProvider) removeTXTRecord(zone, leaf, value string) error {
 
 	defer func() { _ = resp.Body.Close() }()
 
-	body, err := ioutil.ReadAll(resp.Body)
+	body, err := io.ReadAll(resp.Body)
 	if err != nil {
 		return fmt.Errorf("removeTXTRecord: %w", err)
 	}

providers/dns/namecheap/client.go

@@ -4,7 +4,7 @@ import (
 	"encoding/xml"
 	"errors"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"net/url"
 	"strings"
@@ -180,7 +180,7 @@ func readBody(resp *http.Response) ([]byte, error) {
 
 	defer resp.Body.Close()
 
-	rawBody, err := ioutil.ReadAll(resp.Body)
+	rawBody, err := io.ReadAll(resp.Body)
 	if err != nil {
 		return nil, err
 	}

providers/dns/namecheap/namecheap.go

@@ -4,7 +4,7 @@ package namecheap
 import (
 	"errors"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"strconv"
 	"strings"
@@ -220,7 +220,7 @@ func getClientIP(client *http.Client, debug bool) (addr string, err error) {
 	}
 	defer resp.Body.Close()
 
-	clientIP, err := ioutil.ReadAll(resp.Body)
+	clientIP, err := io.ReadAll(resp.Body)
 	if err != nil {
 		return "", err
 	}

providers/dns/netcup/internal/client.go

@@ -5,7 +5,7 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"time"
 )
@@ -282,7 +282,7 @@ func checkResponse(resp *http.Response) error {
 
 		defer resp.Body.Close()
 
-		raw, err := ioutil.ReadAll(resp.Body)
+		raw, err := io.ReadAll(resp.Body)
 		if err != nil {
 			return fmt.Errorf("unable to read body: status code=%d, error=%w", resp.StatusCode, err)
 		}
@@ -300,7 +300,7 @@ func decodeResponseMsg(resp *http.Response) (*ResponseMsg, error) {
 
 	defer resp.Body.Close()
 
-	raw, err := ioutil.ReadAll(resp.Body)
+	raw, err := io.ReadAll(resp.Body)
 	if err != nil {
 		return nil, fmt.Errorf("unable to read body: status code=%d, error=%w", resp.StatusCode, err)
 	}

providers/dns/netcup/internal/client_test.go

@@ -2,7 +2,7 @@ package internal
 
 import (
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"net/http/httptest"
 	"strconv"
@@ -141,7 +141,7 @@ func TestClient_Login(t *testing.T) {
 	defer tearDown()
 
 	mux.HandleFunc("/", func(rw http.ResponseWriter, req *http.Request) {
-		raw, err := ioutil.ReadAll(req.Body)
+		raw, err := io.ReadAll(req.Body)
 		if err != nil {
 			http.Error(rw, err.Error(), http.StatusInternalServerError)
 		}
@@ -251,7 +251,7 @@ func TestClient_Logout(t *testing.T) {
 	defer tearDown()
 
 	mux.HandleFunc("/", func(rw http.ResponseWriter, req *http.Request) {
-		raw, err := ioutil.ReadAll(req.Body)
+		raw, err := io.ReadAll(req.Body)
 		if err != nil {
 			http.Error(rw, err.Error(), http.StatusInternalServerError)
 		}
@@ -335,7 +335,7 @@ func TestClient_GetDNSRecords(t *testing.T) {
 	defer tearDown()
 
 	mux.HandleFunc("/", func(rw http.ResponseWriter, req *http.Request) {
-		raw, err := ioutil.ReadAll(req.Body)
+		raw, err := io.ReadAll(req.Body)
 		if err != nil {
 			http.Error(rw, err.Error(), http.StatusInternalServerError)
 		}
@@ -443,7 +443,7 @@ func TestClient_GetDNSRecords_errors(t *testing.T) {
 		{
 			desc: "responsedata marshaling error",
 			handler: func(rw http.ResponseWriter, req *http.Request) {
-				raw, err := ioutil.ReadAll(req.Body)
+				raw, err := io.ReadAll(req.Body)
 				if err != nil {
 					http.Error(rw, err.Error(), http.StatusInternalServerError)
 				}

providers/dns/netlify/internal/client.go

@@ -4,7 +4,7 @@ import (
 	"bytes"
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"net/url"
 	"path"
@@ -51,7 +51,7 @@ func (c *Client) GetRecords(zoneID string) ([]DNSRecord, error) {
 
 	defer func() { _ = resp.Body.Close() }()
 
-	body, err := ioutil.ReadAll(resp.Body)
+	body, err := io.ReadAll(resp.Body)
 	if err != nil {
 		return nil, fmt.Errorf("failed to read response body: %w", err)
 	}
@@ -97,7 +97,7 @@ func (c *Client) CreateRecord(zoneID string, record DNSRecord) (*DNSRecord, erro
 
 	defer func() { _ = resp.Body.Close() }()
 
-	body, err := ioutil.ReadAll(resp.Body)
+	body, err := io.ReadAll(resp.Body)
 	if err != nil {
 		return nil, fmt.Errorf("failed to read response body: %w", err)
 	}
@@ -137,7 +137,7 @@ func (c *Client) RemoveRecord(zoneID, recordID string) error {
 
 	defer func() { _ = resp.Body.Close() }()
 
-	body, err := ioutil.ReadAll(resp.Body)
+	body, err := io.ReadAll(resp.Body)
 	if err != nil {
 		return fmt.Errorf("failed to read response body: %w", err)
 	}

providers/dns/oraclecloud/configprovider.go

@@ -4,7 +4,6 @@ import (
 	"crypto/rsa"
 	"encoding/base64"
 	"fmt"
-	"io/ioutil"
 	"os"
 
 	"github.com/go-acme/lego/v4/platform/config/env"
@@ -83,7 +82,7 @@ func getPrivateKey(envVar string) ([]byte, error) {
 		return nil, fmt.Errorf("no value provided for: %s or %s", envVar, fileVar)
 	}
 
-	fileContents, err := ioutil.ReadFile(fileVarValue)
+	fileContents, err := os.ReadFile(fileVarValue)
 	if err != nil {
 		return nil, fmt.Errorf("failed to read the file %s (defined by env var %s): %w", fileVarValue, fileVar, err)
 	}

providers/dns/otc/client.go

@@ -6,7 +6,6 @@ import (
 	"errors"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"net/http"
 )
 
@@ -258,7 +257,7 @@ func (d *DNSProvider) sendRequest(method, resource string, payload interface{})
 		return nil, fmt.Errorf("OTC API request %s failed with HTTP status code %d", url, resp.StatusCode)
 	}
 
-	body1, err := ioutil.ReadAll(resp.Body)
+	body1, err := io.ReadAll(resp.Body)
 	if err != nil {
 		return nil, err
 	}

providers/dns/otc/mock_test.go

@@ -2,7 +2,7 @@ package otc
 
 import (
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"net/http/httptest"
 	"testing"
@@ -147,7 +147,7 @@ func (m *DNSServerMock) HandleListRecordsetsSuccessfully() {
 		if r.Method == http.MethodPost {
 			assert.Equal(m.t, r.Header.Get("Content-Type"), "application/json")
 
-			body, err := ioutil.ReadAll(r.Body)
+			body, err := io.ReadAll(r.Body)
 			assert.Nil(m.t, err)
 			exceptedString := `{
 				"name": "_acme-challenge.example.com.",

providers/dns/rackspace/rackspace_test.go

@@ -2,7 +2,7 @@ package rackspace
 
 import (
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"net/http/httptest"
 	"strings"
@@ -124,7 +124,7 @@ func startTestServers() (string, func()) {
 
 func identityHandler(dnsEndpoint string) http.Handler {
 	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-		reqBody, err := ioutil.ReadAll(r.Body)
+		reqBody, err := io.ReadAll(r.Body)
 		if err != nil {
 			w.WriteHeader(http.StatusInternalServerError)
 			return
@@ -158,7 +158,7 @@ func dnsHandler() *http.ServeMux {
 		switch r.Method {
 		// Used by `Present()` creating the TXT record
 		case http.MethodPost:
-			reqBody, err := ioutil.ReadAll(r.Body)
+			reqBody, err := io.ReadAll(r.Body)
 			if err != nil {
 				http.Error(w, err.Error(), http.StatusInternalServerError)
 				return

providers/dns/regru/internal/client.go

@@ -3,7 +3,7 @@ package internal
 import (
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"net/url"
 	"path"
@@ -102,7 +102,7 @@ func (c Client) do(request interface{}, fragments ...string) (*APIResponse, erro
 		return nil, fmt.Errorf("API error, status code: %d", resp.StatusCode)
 	}
 
-	all, err := ioutil.ReadAll(resp.Body)
+	all, err := io.ReadAll(resp.Body)
 	if err != nil {
 		return nil, err
 	}

providers/dns/servercow/internal/client.go

@@ -5,7 +5,7 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 )
 
@@ -48,7 +48,7 @@ func (c *Client) GetRecords(domain string) ([]Record, error) {
 		return nil, fmt.Errorf("error: status code %d", resp.StatusCode)
 	}
 
-	raw, err := ioutil.ReadAll(resp.Body)
+	raw, err := io.ReadAll(resp.Body)
 	if err != nil {
 		return nil, fmt.Errorf("failed to read body: %w", err)
 	}
@@ -80,7 +80,7 @@ func (c *Client) CreateUpdateRecord(domain string, data Record) (*Message, error
 		return nil, fmt.Errorf("error: status code %d", resp.StatusCode)
 	}
 
-	raw, err := ioutil.ReadAll(resp.Body)
+	raw, err := io.ReadAll(resp.Body)
 	if err != nil {
 		return nil, fmt.Errorf("failed to read body: %w", err)
 	}
@@ -116,7 +116,7 @@ func (c *Client) DeleteRecord(domain string, data Record) (*Message, error) {
 		return nil, fmt.Errorf("error: status code %d", resp.StatusCode)
 	}
 
-	raw, err := ioutil.ReadAll(resp.Body)
+	raw, err := io.ReadAll(resp.Body)
 	if err != nil {
 		return nil, fmt.Errorf("failed to read body: %w", err)
 	}

providers/dns/servercow/internal/client_test.go

@@ -3,7 +3,6 @@ package internal
 import (
 	"encoding/json"
 	"io"
-	"io/ioutil"
 	"net/http"
 	"net/http/httptest"
 	"os"
@@ -53,7 +52,7 @@ func TestClient_GetRecords(t *testing.T) {
 	recordsJSON, err := json.Marshal(records)
 	require.NoError(t, err)
 
-	expectedContent, err := ioutil.ReadFile("./fixtures/records-01.json")
+	expectedContent, err := os.ReadFile("./fixtures/records-01.json")
 	require.NoError(t, err)
 
 	assert.JSONEq(t, string(expectedContent), string(recordsJSON))
@@ -92,7 +91,7 @@ func TestClient_CreateUpdateRecord(t *testing.T) {
 			return
 		}
 
-		content, err := ioutil.ReadAll(req.Body)
+		content, err := io.ReadAll(req.Body)
 		if err != nil {
 			http.Error(rw, err.Error(), http.StatusBadRequest)
 			return
@@ -163,7 +162,7 @@ func TestClient_DeleteRecord(t *testing.T) {
 			return
 		}
 
-		content, err := ioutil.ReadAll(req.Body)
+		content, err := io.ReadAll(req.Body)
 		if err != nil {
 			http.Error(rw, err.Error(), http.StatusBadRequest)
 			return

providers/dns/sonic/internal/client.go

@@ -5,7 +5,7 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"time"
 )
@@ -81,7 +81,7 @@ func (c *Client) SetRecord(hostname string, value string, ttl int) error {
 
 	defer func() { _ = resp.Body.Close() }()
 
-	raw, err := ioutil.ReadAll(resp.Body)
+	raw, err := io.ReadAll(resp.Body)
 	if err != nil {
 		return fmt.Errorf("failed to read response body: %w", err)
 	}

providers/dns/stackpath/client.go

@@ -5,7 +5,7 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"path"
 
@@ -209,7 +209,7 @@ func readBody(resp *http.Response) ([]byte, error) {
 
 	defer resp.Body.Close()
 
-	rawBody, err := ioutil.ReadAll(resp.Body)
+	rawBody, err := io.ReadAll(resp.Body)
 	if err != nil {
 		return nil, err
 	}

providers/dns/versio/client.go

@@ -5,7 +5,6 @@ import (
 	"encoding/json"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"net/http"
 	"path"
 )
@@ -99,7 +98,7 @@ func (d *DNSProvider) do(req *http.Request, result interface{}) error {
 
 	if resp.StatusCode >= http.StatusBadRequest {
 		var body []byte
-		body, err = ioutil.ReadAll(resp.Body)
+		body, err = io.ReadAll(resp.Body)
 		if err != nil {
 			return fmt.Errorf("%d: failed to read response body: %w", resp.StatusCode, err)
 		}
@@ -113,7 +112,7 @@ func (d *DNSProvider) do(req *http.Request, result interface{}) error {
 	}
 
 	if result != nil {
-		content, err := ioutil.ReadAll(resp.Body)
+		content, err := io.ReadAll(resp.Body)
 		if err != nil {
 			return fmt.Errorf("request failed: %w", err)
 		}

providers/dns/vinyldns/mock_test.go

@@ -2,9 +2,9 @@ package vinyldns
 
 import (
 	"fmt"
-	"io/ioutil"
 	"net/http"
 	"net/http/httptest"
+	"os"
 	"sync"
 	"testing"
 
@@ -102,7 +102,7 @@ func (h *mockRouter) add(method, path string, statusCode int, filename string) {
 	h.routes[method][path] = func(rw http.ResponseWriter, req *http.Request) {
 		rw.WriteHeader(statusCode)
 
-		data, err := ioutil.ReadFile(fmt.Sprintf("./fixtures/%s.json", filename))
+		data, err := os.ReadFile(fmt.Sprintf("./fixtures/%s.json", filename))
 		if err != nil {
 			http.Error(rw, err.Error(), http.StatusInternalServerError)
 			return

providers/dns/wedos/internal/client.go

@@ -4,7 +4,7 @@ import (
 	"context"
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"net/url"
 	"strings"
@@ -196,7 +196,7 @@ func (c *Client) do(ctx context.Context, command string, payload interface{}) (*
 		return nil, err
 	}
 
-	body, err := ioutil.ReadAll(resp.Body)
+	body, err := io.ReadAll(resp.Body)
 	if err != nil {
 		return nil, err
 	}

providers/dns/wedos/internal/client_test.go

@@ -3,9 +3,9 @@ package internal
 import (
 	"context"
 	"fmt"
-	"io/ioutil"
 	"net/http"
 	"net/http/httptest"
+	"os"
 	"regexp"
 	"testing"
 
@@ -38,7 +38,7 @@ func setupNew(t *testing.T, expectedForm string, filename string) *Client {
 			return
 		}
 
-		data, err := ioutil.ReadFile(fmt.Sprintf("./fixtures/%s.json", filename))
+		data, err := os.ReadFile(fmt.Sprintf("./fixtures/%s.json", filename))
 		if err != nil {
 			http.Error(rw, err.Error(), http.StatusInternalServerError)
 			return

providers/dns/zoneee/client.go

@@ -5,7 +5,6 @@ import (
 	"encoding/json"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"net/http"
 	"path"
 )
@@ -100,7 +99,7 @@ func (d *DNSProvider) sendRequest(req *http.Request, result interface{}) error {
 		return nil
 	}
 
-	raw, err := ioutil.ReadAll(resp.Body)
+	raw, err := io.ReadAll(resp.Body)
 	if err != nil {
 		return err
 	}
@@ -123,7 +122,7 @@ func checkResponse(resp *http.Response) error {
 
 	defer resp.Body.Close()
 
-	raw, err := ioutil.ReadAll(resp.Body)
+	raw, err := io.ReadAll(resp.Body)
 	if err != nil {
 		return fmt.Errorf("unable to read body: status code=%d, error=%w", resp.StatusCode, err)
 	}

providers/http/webroot/webroot.go

@@ -4,7 +4,6 @@ package webroot
 import (
 	"errors"
 	"fmt"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 
@@ -35,7 +34,7 @@ func (w *HTTPProvider) Present(domain, token, keyAuth string) error {
 		return fmt.Errorf("could not create required directories in webroot for HTTP challenge: %w", err)
 	}
 
-	err = ioutil.WriteFile(challengeFilePath, []byte(keyAuth), 0o644)
+	err = os.WriteFile(challengeFilePath, []byte(keyAuth), 0o644)
 	if err != nil {
 		return fmt.Errorf("could not write file in webroot for HTTP challenge: %w", err)
 	}

providers/http/webroot/webroot_test.go

@@ -1,7 +1,6 @@
 package webroot
 
 import (
-	"io/ioutil"
 	"os"
 	"testing"
 
@@ -30,7 +29,7 @@ func TestHTTPProvider(t *testing.T) {
 	}
 
 	var data []byte
-	data, err = ioutil.ReadFile(challengeFilePath)
+	data, err = os.ReadFile(challengeFilePath)
 	require.NoError(t, err)
 
 	dataStr := string(data)