make updates due to linter update

Signed-off-by: Alex Goodman <alex.goodman@anchore.com>

internal/file/zip_file_traversal.go

@@ -24,12 +24,12 @@ const (
 
 const perFileReadLimit = 2 * GB
 
-type errZipSlipDetected struct {
+type zipSlipDetectedError struct {
 	Prefix   string
 	JoinArgs []string
 }
 
-func (e *errZipSlipDetected) Error() string {
+func (e *zipSlipDetectedError) Error() string {
 	return fmt.Sprintf("paths are not allowed to resolve outside of the root prefix (%q). Destination: %q", e.Prefix, e.JoinArgs)
 }
 
@@ -197,7 +197,7 @@ func safeJoin(prefix string, dest ...string) (string, error) {
 	joinResult := filepath.Join(append([]string{prefix}, dest...)...)
 	cleanJoinResult := filepath.Clean(joinResult)
 	if !strings.HasPrefix(cleanJoinResult, filepath.Clean(prefix)) {
-		return "", &errZipSlipDetected{
+		return "", &zipSlipDetectedError{
 			Prefix:   prefix,
 			JoinArgs: dest,
 		}

internal/file/zip_file_traversal_test.go

@@ -299,7 +299,7 @@ func TestSafeJoin(t *testing.T) {
 				"../../../etc/passwd",
 			},
 			expected:     "",
-			errAssertion: assertErrorAs(&errZipSlipDetected{}),
+			errAssertion: assertErrorAs(&zipSlipDetectedError{}),
 		},
 		{
 			prefix: "/a/place",
@@ -308,7 +308,7 @@ func TestSafeJoin(t *testing.T) {
 				"../",
 			},
 			expected:     "",
-			errAssertion: assertErrorAs(&errZipSlipDetected{}),
+			errAssertion: assertErrorAs(&zipSlipDetectedError{}),
 		},
 		{
 			prefix: "/a/place",
@@ -316,7 +316,7 @@ func TestSafeJoin(t *testing.T) {
 				"../",
 			},
 			expected:     "",
-			errAssertion: assertErrorAs(&errZipSlipDetected{}),
+			errAssertion: assertErrorAs(&zipSlipDetectedError{}),
 		},
 	}
 

internal/file/zip_read_closer.go

@@ -3,6 +3,7 @@ package file
 import (
 	"archive/zip"
 	"encoding/binary"
+	"errors"
 	"fmt"
 	"io"
 	"os"
@@ -91,7 +92,7 @@ func findArchiveStartOffset(r io.ReaderAt, size int64) (startOfArchive uint64, e
 			bLen = size
 		}
 		buf = make([]byte, int(bLen))
-		if _, err := r.ReadAt(buf, size-bLen); err != nil && err != io.EOF {
+		if _, err := r.ReadAt(buf, size-bLen); err != nil && !errors.Is(err, io.EOF) {
 			return 0, err
 		}
 		if p := findSignatureInBlock(buf); p >= 0 {