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260 lines
7.3 KiB
Go
260 lines
7.3 KiB
Go
//go:build windows
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// +build windows
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package fs
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import (
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"crypto/rand"
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"fmt"
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"math/big"
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"os"
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"path/filepath"
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"reflect"
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"syscall"
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"testing"
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"unsafe"
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"golang.org/x/sys/windows"
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)
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// The code below was adapted from github.com/Microsoft/go-winio under MIT license.
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// The MIT License (MIT)
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// Copyright (c) 2015 Microsoft
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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// The code below was adapted from https://github.com/ambarve/go-winio/blob/a7564fd482feb903f9562a135f1317fd3b480739/ea_test.go
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// under MIT license.
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var (
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testEas = []ExtendedAttribute{
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{Name: "foo", Value: []byte("bar")},
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{Name: "fizz", Value: []byte("buzz")},
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}
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testEasEncoded = []byte{16, 0, 0, 0, 0, 3, 3, 0, 102, 111, 111, 0, 98, 97, 114, 0, 0,
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0, 0, 0, 0, 4, 4, 0, 102, 105, 122, 122, 0, 98, 117, 122, 122, 0, 0, 0}
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testEasNotPadded = testEasEncoded[0 : len(testEasEncoded)-3]
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testEasTruncated = testEasEncoded[0:20]
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)
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func TestRoundTripEas(t *testing.T) {
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b, err := EncodeExtendedAttributes(testEas)
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if err != nil {
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t.Fatal(err)
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}
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if !reflect.DeepEqual(testEasEncoded, b) {
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t.Fatalf("Encoded mismatch %v %v", testEasEncoded, b)
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}
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eas, err := DecodeExtendedAttributes(b)
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if err != nil {
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t.Fatal(err)
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}
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if !reflect.DeepEqual(testEas, eas) {
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t.Fatalf("mismatch %+v %+v", testEas, eas)
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}
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}
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func TestEasDontNeedPaddingAtEnd(t *testing.T) {
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eas, err := DecodeExtendedAttributes(testEasNotPadded)
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if err != nil {
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t.Fatal(err)
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}
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if !reflect.DeepEqual(testEas, eas) {
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t.Fatalf("mismatch %+v %+v", testEas, eas)
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}
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}
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func TestTruncatedEasFailCorrectly(t *testing.T) {
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_, err := DecodeExtendedAttributes(testEasTruncated)
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if err == nil {
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t.Fatal("expected error")
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}
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}
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func TestNilEasEncodeAndDecodeAsNil(t *testing.T) {
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b, err := EncodeExtendedAttributes(nil)
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if err != nil {
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t.Fatal(err)
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}
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if len(b) != 0 {
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t.Fatal("expected empty")
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}
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eas, err := DecodeExtendedAttributes(nil)
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if err != nil {
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t.Fatal(err)
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}
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if len(eas) != 0 {
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t.Fatal("expected empty")
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}
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}
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// TestSetFileEa makes sure that the test buffer is actually parsable by NtSetEaFile.
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func TestSetFileEa(t *testing.T) {
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f, err := os.CreateTemp("", "testea")
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if err != nil {
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t.Fatal(err)
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}
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defer func() {
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err := os.Remove(f.Name())
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if err != nil {
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t.Logf("Error removing file %s: %v\n", f.Name(), err)
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}
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err = f.Close()
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if err != nil {
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t.Logf("Error closing file %s: %v\n", f.Name(), err)
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}
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}()
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ntdll := syscall.MustLoadDLL("ntdll.dll")
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ntSetEaFile := ntdll.MustFindProc("NtSetEaFile")
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var iosb [2]uintptr
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r, _, _ := ntSetEaFile.Call(f.Fd(),
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uintptr(unsafe.Pointer(&iosb[0])),
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uintptr(unsafe.Pointer(&testEasEncoded[0])),
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uintptr(len(testEasEncoded)))
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if r != 0 {
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t.Fatalf("NtSetEaFile failed with %08x", r)
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}
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}
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func TestSetGetFileEA(t *testing.T) {
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tempDir := t.TempDir()
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testfilePath := filepath.Join(tempDir, "testfile.txt")
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// create temp file
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testfile, err := os.Create(testfilePath)
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if err != nil {
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t.Fatalf("failed to create temporary file: %s", err)
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}
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defer func() {
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err := testfile.Close()
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if err != nil {
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t.Logf("Error closing file %s: %v\n", testfile.Name(), err)
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}
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}()
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nAttrs := 3
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testEAs := make([]ExtendedAttribute, 3)
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// generate random extended attributes for test
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for i := 0; i < nAttrs; i++ {
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// EA name is automatically converted to upper case before storing, so
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// when reading it back it returns the upper case name. To avoid test
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// failures because of that keep the name upper cased.
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testEAs[i].Name = fmt.Sprintf("TESTEA%d", i+1)
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testEAs[i].Value = make([]byte, getRandomInt())
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_, err := rand.Read(testEAs[i].Value)
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if err != nil {
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t.Logf("Error reading rand for file %s: %v\n", testfilePath, err)
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}
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}
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utf16Path := windows.StringToUTF16Ptr(testfilePath)
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fileAccessRightReadWriteEA := (0x8 | 0x10)
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fileHandle, err := windows.CreateFile(utf16Path, uint32(fileAccessRightReadWriteEA), 0, nil, windows.OPEN_EXISTING, windows.FILE_ATTRIBUTE_NORMAL, 0)
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if err != nil {
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t.Fatalf("open file failed with: %s", err)
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}
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defer func() {
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err := windows.Close(fileHandle)
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if err != nil {
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t.Logf("Error closing file handle %s: %v\n", testfilePath, err)
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}
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}()
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if err := SetFileEA(fileHandle, testEAs); err != nil {
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t.Fatalf("set EA for file failed: %s", err)
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}
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var readEAs []ExtendedAttribute
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if readEAs, err = GetFileEA(fileHandle); err != nil {
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t.Fatalf("get EA for file failed: %s", err)
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}
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if !reflect.DeepEqual(readEAs, testEAs) {
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t.Logf("expected: %+v, found: %+v\n", testEAs, readEAs)
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t.Fatalf("EAs read from testfile don't match")
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}
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}
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func TestSetGetFolderEA(t *testing.T) {
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tempDir := t.TempDir()
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testfolderPath := filepath.Join(tempDir, "testfolder")
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// create temp folder
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err := os.Mkdir(testfolderPath, os.ModeDir)
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if err != nil {
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t.Fatalf("failed to create temporary file: %s", err)
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}
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nAttrs := 3
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testEAs := make([]ExtendedAttribute, 3)
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// generate random extended attributes for test
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for i := 0; i < nAttrs; i++ {
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// EA name is automatically converted to upper case before storing, so
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// when reading it back it returns the upper case name. To avoid test
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// failures because of that keep the name upper cased.
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testEAs[i].Name = fmt.Sprintf("TESTEA%d", i+1)
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testEAs[i].Value = make([]byte, getRandomInt())
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_, err := rand.Read(testEAs[i].Value)
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if err != nil {
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t.Logf("Error reading rand for file %s: %v\n", testfolderPath, err)
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}
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}
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utf16Path := windows.StringToUTF16Ptr(testfolderPath)
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fileAccessRightReadWriteEA := (0x8 | 0x10)
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fileHandle, err := windows.CreateFile(utf16Path, uint32(fileAccessRightReadWriteEA), 0, nil, windows.OPEN_EXISTING, windows.FILE_ATTRIBUTE_NORMAL|windows.FILE_FLAG_BACKUP_SEMANTICS, 0)
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if err != nil {
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t.Fatalf("open folder failed with: %s", err)
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}
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defer func() {
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err := windows.Close(fileHandle)
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if err != nil {
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t.Logf("Error closing file handle %s: %v\n", testfolderPath, err)
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}
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}()
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if err := SetFileEA(fileHandle, testEAs); err != nil {
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t.Fatalf("set EA for folder failed: %s", err)
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}
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var readEAs []ExtendedAttribute
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if readEAs, err = GetFileEA(fileHandle); err != nil {
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t.Fatalf("get EA for folder failed: %s", err)
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}
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if !reflect.DeepEqual(readEAs, testEAs) {
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t.Logf("expected: %+v, found: %+v\n", testEAs, readEAs)
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t.Fatalf("EAs read from test folder don't match")
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}
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}
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func getRandomInt() int64 {
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nBig, err := rand.Int(rand.Reader, big.NewInt(27))
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if err != nil {
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panic(err)
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}
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n := nBig.Int64()
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if n == 0 {
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n = getRandomInt()
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}
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return n
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}
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