// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package filepath_test
import (
"flag"
"fmt"
"internal/testenv"
"io/ioutil"
"os"
"os/exec"
"path/filepath"
"reflect"
"runtime/debug"
"strings"
"testing"
)
func TestWinSplitListTestsAreValid(t *testing.T) {
comspec := os.Getenv("ComSpec")
if comspec == "" {
t.Fatal("%ComSpec% must be set")
}
for ti, tt := range winsplitlisttests {
testWinSplitListTestIsValid(t, ti, tt, comspec)
}
}
func testWinSplitListTestIsValid(t *testing.T, ti int, tt SplitListTest,
comspec string) {
const (
cmdfile = `printdir.cmd`
perm os.FileMode = 0700
)
tmp, err := ioutil.TempDir("", "testWinSplitListTestIsValid")
if err != nil {
t.Fatalf("TempDir failed: %v", err)
}
defer os.RemoveAll(tmp)
for i, d := range tt.result {
if d == "" {
continue
}
if cd := filepath.Clean(d); filepath.VolumeName(cd) != "" ||
cd[0] == '\\' || cd == ".." || (len(cd) >= 3 && cd[0:3] == `..\`) {
t.Errorf("%d,%d: %#q refers outside working directory", ti, i, d)
return
}
dd := filepath.Join(tmp, d)
if _, err := os.Stat(dd); err == nil {
t.Errorf("%d,%d: %#q already exists", ti, i, d)
return
}
if err = os.MkdirAll(dd, perm); err != nil {
t.Errorf("%d,%d: MkdirAll(%#q) failed: %v", ti, i, dd, err)
return
}
fn, data := filepath.Join(dd, cmdfile), []byte("@echo "+d+"\r\n")
if err = ioutil.WriteFile(fn, data, perm); err != nil {
t.Errorf("%d,%d: WriteFile(%#q) failed: %v", ti, i, fn, err)
return
}
}
// on some systems, SystemRoot is required for cmd to work
systemRoot := os.Getenv("SystemRoot")
for i, d := range tt.result {
if d == "" {
continue
}
exp := []byte(d + "\r\n")
cmd := &exec.Cmd{
Path: comspec,
Args: []string{`/c`, cmdfile},
Env: []string{`Path=` + systemRoot + "/System32;" + tt.list, `SystemRoot=` + systemRoot},
Dir: tmp,
}
out, err := cmd.CombinedOutput()
switch {
case err != nil:
t.Errorf("%d,%d: execution error %v\n%q", ti, i, err, out)
return
case !reflect.DeepEqual(out, exp):
t.Errorf("%d,%d: expected %#q, got %#q", ti, i, exp, out)
return
default:
// unshadow cmdfile in next directory
err = os.Remove(filepath.Join(tmp, d, cmdfile))
if err != nil {
t.Fatalf("Remove test command failed: %v", err)
}
}
}
}
func TestWindowsEvalSymlinks(t *testing.T) {
testenv.MustHaveSymlink(t)
tmpDir, err := ioutil.TempDir("", "TestWindowsEvalSymlinks")
if err != nil {
t.Fatal(err)
}
defer os.RemoveAll(tmpDir)
// /tmp may itself be a symlink! Avoid the confusion, although
// it means trusting the thing we're testing.
tmpDir, err = filepath.EvalSymlinks(tmpDir)
if err != nil {
t.Fatal(err)
}
if len(tmpDir) < 3 {
t.Fatalf("tmpDir path %q is too short", tmpDir)
}
if tmpDir[1] != ':' {
t.Fatalf("tmpDir path %q must have drive letter in it", tmpDir)
}
test := EvalSymlinksTest{"test/linkabswin", tmpDir[:3]}
// Create the symlink farm using relative paths.
testdirs := append(EvalSymlinksTestDirs, test)
for _, d := range testdirs {
var err error
path := simpleJoin(tmpDir, d.path)
if d.dest == "" {
err = os.Mkdir(path, 0755)
} else {
err = os.Symlink(d.dest, path)
}
if err != nil {
t.Fatal(err)
}
}
path := simpleJoin(tmpDir, test.path)
testEvalSymlinks(t, path, test.dest)
testEvalSymlinksAfterChdir(t, path, ".", test.dest)
testEvalSymlinksAfterChdir(t,
path,
filepath.VolumeName(tmpDir)+".",
test.dest)
testEvalSymlinksAfterChdir(t,
simpleJoin(tmpDir, "test"),
simpleJoin("..", test.path),
test.dest)
testEvalSymlinksAfterChdir(t, tmpDir, test.path, test.dest)
}
// TestEvalSymlinksCanonicalNames verify that EvalSymlinks
// returns "canonical" path names on windows.
func TestEvalSymlinksCanonicalNames(t *testing.T) {
tmp, err := ioutil.TempDir("", "evalsymlinkcanonical")
if err != nil {
t.Fatal("creating temp dir:", err)
}
defer os.RemoveAll(tmp)
// ioutil.TempDir might return "non-canonical" name.
cTmpName, err := filepath.EvalSymlinks(tmp)
if err != nil {
t.Errorf("EvalSymlinks(%q) error: %v", tmp, err)
}
dirs := []string{
"test",
"test/dir",
"testing_long_dir",
"TEST2",
}
for _, d := range dirs {
dir := filepath.Join(cTmpName, d)
err := os.Mkdir(dir, 0755)
if err != nil {
t.Fatal(err)
}
cname, err := filepath.EvalSymlinks(dir)
if err != nil {
t.Errorf("EvalSymlinks(%q) error: %v", dir, err)
continue
}
if dir != cname {
t.Errorf("EvalSymlinks(%q) returns %q, but should return %q", dir, cname, dir)
continue
}
// test non-canonical names
test := strings.ToUpper(dir)
p, err := filepath.EvalSymlinks(test)
if err != nil {
t.Errorf("EvalSymlinks(%q) error: %v", test, err)
continue
}
if p != cname {
t.Errorf("EvalSymlinks(%q) returns %q, but should return %q", test, p, cname)
continue
}
// another test
test = strings.ToLower(dir)
p, err = filepath.EvalSymlinks(test)
if err != nil {
t.Errorf("EvalSymlinks(%q) error: %v", test, err)
continue
}
if p != cname {
t.Errorf("EvalSymlinks(%q) returns %q, but should return %q", test, p, cname)
continue
}
}
}
// checkVolume8dot3Setting runs "fsutil 8dot3name query c:" command
// (where c: is vol parameter) to discover "8dot3 name creation state".
// The state is combination of 2 flags. The global flag controls if it
// is per volume or global setting:
// 0 - Enable 8dot3 name creation on all volumes on the system
// 1 - Disable 8dot3 name creation on all volumes on the system
// 2 - Set 8dot3 name creation on a per volume basis
// 3 - Disable 8dot3 name creation on all volumes except the system volume
// If global flag is set to 2, then per-volume flag needs to be examined:
// 0 - Enable 8dot3 name creation on this volume
// 1 - Disable 8dot3 name creation on this volume
// checkVolume8dot3Setting verifies that "8dot3 name creation" flags
// are set to 2 and 0, if enabled parameter is true, or 2 and 1, if enabled
// is false. Otherwise checkVolume8dot3Setting returns error.
func checkVolume8dot3Setting(vol string, enabled bool) error {
// It appears, on some systems "fsutil 8dot3name query ..." command always
// exits with error. Ignore exit code, and look at fsutil output instead.
out, _ := exec.Command("fsutil", "8dot3name", "query", vol).CombinedOutput()
// Check that system has "Volume level setting" set.
expected := "The registry state of NtfsDisable8dot3NameCreation is 2, the default (Volume level setting)"
if !strings.Contains(string(out), expected) {
// Windows 10 version of fsutil has different output message.
expectedWindow10 := "The registry state is: 2 (Per volume setting - the default)"
if !strings.Contains(string(out), expectedWindow10) {
return fmt.Errorf("fsutil output should contain %q, but is %q", expected, string(out))
}
}
// Now check the volume setting.
expected = "Based on the above two settings, 8dot3 name creation is %s on %s"
if enabled {
expected = fmt.Sprintf(expected, "enabled", vol)
} else {
expected = fmt.Sprintf(expected, "disabled", vol)
}
if !strings.Contains(string(out), expected) {
return fmt.Errorf("unexpected fsutil output: %q", string(out))
}
return nil
}
func setVolume8dot3Setting(vol string, enabled bool) error {
cmd := []string{"fsutil", "8dot3name", "set", vol}
if enabled {
cmd = append(cmd, "0")
} else {
cmd = append(cmd, "1")
}
// It appears, on some systems "fsutil 8dot3name set ..." command always
// exits with error. Ignore exit code, and look at fsutil output instead.
out, _ := exec.Command(cmd[0], cmd[1:]...).CombinedOutput()
if string(out) != "\r\nSuccessfully set 8dot3name behavior.\r\n" {
// Windows 10 version of fsutil has different output message.
expectedWindow10 := "Successfully %s 8dot3name generation on %s\r\n"
if enabled {
expectedWindow10 = fmt.Sprintf(expectedWindow10, "enabled", vol)
} else {
expectedWindow10 = fmt.Sprintf(expectedWindow10, "disabled", vol)
}
if string(out) != expectedWindow10 {
return fmt.Errorf("%v command failed: %q", cmd, string(out))
}
}
return nil
}
var runFSModifyTests = flag.Bool("run_fs_modify_tests", false, "run tests which modify filesystem parameters")
// This test assumes registry state of NtfsDisable8dot3NameCreation is 2,
// the default (Volume level setting).
func TestEvalSymlinksCanonicalNamesWith8dot3Disabled(t *testing.T) {
if !*runFSModifyTests {
t.Skip("skipping test that modifies file system setting; enable with -run_fs_modify_tests")
}
tempVol := filepath.VolumeName(os.TempDir())
if len(tempVol) != 2 {
t.Fatalf("unexpected temp volume name %q", tempVol)
}
err := checkVolume8dot3Setting(tempVol, true)
if err != nil {
t.Fatal(err)
}
err = setVolume8dot3Setting(tempVol, false)
if err != nil {
t.Fatal(err)
}
defer func() {
err := setVolume8dot3Setting(tempVol, true)
if err != nil {
t.Fatal(err)
}
err = checkVolume8dot3Setting(tempVol, true)
if err != nil {
t.Fatal(err)
}
}()
err = checkVolume8dot3Setting(tempVol, false)
if err != nil {
t.Fatal(err)
}
TestEvalSymlinksCanonicalNames(t)
}
func TestToNorm(t *testing.T) {
stubBase := func(path string) (string, error) {
vol := filepath.VolumeName(path)
path = path[len(vol):]
if strings.Contains(path, "/") {
return "", fmt.Errorf("invalid path is given to base: %s", vol+path)
}
if path == "" || path == "." || path == `\` {
return "", fmt.Errorf("invalid path is given to base: %s", vol+path)
}
i := strings.LastIndexByte(path, filepath.Separator)
if i == len(path)-1 { // trailing '\' is invalid
return "", fmt.Errorf("invalid path is given to base: %s", vol+path)
}
if i == -1 {
return strings.ToUpper(path), nil
}
return strings.ToUpper(path[i+1:]), nil
}
// On this test, toNorm should be same as string.ToUpper(filepath.Clean(path)) except empty string.
tests := []struct {
arg string
want string
}{
{"", ""},
{".", "."},
{"./foo/bar", `FOO\BAR`},
{"/", `\`},
{"/foo/bar", `\FOO\BAR`},
{"/foo/bar/baz/qux", `\FOO\BAR\BAZ\QUX`},
{"foo/bar", `FOO\BAR`},
{"C:/foo/bar", `C:\FOO\BAR`},
{"C:foo/bar", `C:FOO\BAR`},
{"c:/foo/bar", `C:\FOO\BAR`},
{"C:/foo/bar", `C:\FOO\BAR`},
{"C:/foo/bar/", `C:\FOO\BAR`},
{`C:\foo\bar`, `C:\FOO\BAR`},
{`C:\foo/bar\`, `C:\FOO\BAR`},
{"C:/ふー/バー", `C:\ふー\バー`},
}
for _, test := range tests {
got, err := filepath.ToNorm(test.arg, stubBase)
if err != nil {
t.Errorf("toNorm(%s) failed: %v\n", test.arg, err)
} else if got != test.want {
t.Errorf("toNorm(%s) returns %s, but %s expected\n", test.arg, got, test.want)
}
}
testPath := `{{tmp}}\test\foo\bar`
testsDir := []struct {
wd string
arg string
want string
}{
// test absolute paths
{".", `{{tmp}}\test\foo\bar`, `{{tmp}}\test\foo\bar`},
{".", `{{tmp}}\.\test/foo\bar`, `{{tmp}}\test\foo\bar`},
{".", `{{tmp}}\test\..\test\foo\bar`, `{{tmp}}\test\foo\bar`},
{".", `{{tmp}}\TEST\FOO\BAR`, `{{tmp}}\test\foo\bar`},
// test relative paths begin with drive letter
{`{{tmp}}\test`, `{{tmpvol}}.`, `{{tmpvol}}.`},
{`{{tmp}}\test`, `{{tmpvol}}..`, `{{tmpvol}}..`},
{`{{tmp}}\test`, `{{tmpvol}}foo\bar`, `{{tmpvol}}foo\bar`},
{`{{tmp}}\test`, `{{tmpvol}}.\foo\bar`, `{{tmpvol}}foo\bar`},
{`{{tmp}}\test`, `{{tmpvol}}foo\..\foo\bar`, `{{tmpvol}}foo\bar`},
{`{{tmp}}\test`, `{{tmpvol}}FOO\BAR`, `{{tmpvol}}foo\bar`},
// test relative paths begin with '\'
{"{{tmp}}", `{{tmpnovol}}\test\foo\bar`, `{{tmpnovol}}\test\foo\bar`},
{"{{tmp}}", `{{tmpnovol}}\.\test\foo\bar`, `{{tmpnovol}}\test\foo\bar`},
{"{{tmp}}", `{{tmpnovol}}\test\..\test\foo\bar`, `{{tmpnovol}}\test\foo\bar`},
{"{{tmp}}", `{{tmpnovol}}\TEST\FOO\BAR`, `{{tmpnovol}}\test\foo\bar`},
// test relative paths begin without '\'
{`{{tmp}}\test`, ".", `.`},
{`{{tmp}}\test`, "..", `..`},
{`{{tmp}}\test`, `foo\bar`, `foo\bar`},
{`{{tmp}}\test`, `.\foo\bar`, `foo\bar`},
{`{{tmp}}\test`, `foo\..\foo\bar`, `foo\bar`},
{`{{tmp}}\test`, `FOO\BAR`, `foo\bar`},
}
tmp, err := ioutil.TempDir("", "testToNorm")
if err != nil {
t.Fatal(err)
}
defer func() {
err := os.RemoveAll(tmp)
if err != nil {
t.Fatal(err)
}
}()
// ioutil.TempDir might return "non-canonical" name.
ctmp, err := filepath.EvalSymlinks(tmp)
if err != nil {
t.Fatal(err)
}
err = os.MkdirAll(strings.ReplaceAll(testPath, "{{tmp}}", ctmp), 0777)
if err != nil {
t.Fatal(err)
}
cwd, err := os.Getwd()
if err != nil {
t.Fatal(err)
}
defer func() {
err := os.Chdir(cwd)
if err != nil {
t.Fatal(err)
}
}()
tmpVol := filepath.VolumeName(ctmp)
if len(tmpVol) != 2 {
t.Fatalf("unexpected temp volume name %q", tmpVol)
}
tmpNoVol := ctmp[len(tmpVol):]
replacer := strings.NewReplacer("{{tmp}}", ctmp, "{{tmpvol}}", tmpVol, "{{tmpnovol}}", tmpNoVol)
for _, test := range testsDir {
wd := replacer.Replace(test.wd)
arg := replacer.Replace(test.arg)
want := replacer.Replace(test.want)
if test.wd == "." {
err := os.Chdir(cwd)
if err != nil {
t.Error(err)
continue
}
} else {
err := os.Chdir(wd)
if err != nil {
t.Error(err)
continue
}
}
got, err := filepath.ToNorm(arg, filepath.NormBase)
if err != nil {
t.Errorf("toNorm(%s) failed: %v (wd=%s)\n", arg, err, wd)
} else if got != want {
t.Errorf("toNorm(%s) returns %s, but %s expected (wd=%s)\n", arg, got, want, wd)
}
}
}
func TestUNC(t *testing.T) {
// Test that this doesn't go into an infinite recursion.
// See golang.org/issue/15879.
defer debug.SetMaxStack(debug.SetMaxStack(1e6))
filepath.Glob(`\\?\c:\*`)
}
func testWalkMklink(t *testing.T, linktype string) {
output, _ := exec.Command("cmd", "/c", "mklink", "/?").Output()
if !strings.Contains(string(output), fmt.Sprintf(" /%s ", linktype)) {
t.Skipf(`skipping test; mklink does not supports /%s parameter`, linktype)
}
testWalkSymlink(t, func(target, link string) error {
output, err := exec.Command("cmd", "/c", "mklink", "/"+linktype, link, target).CombinedOutput()
if err != nil {
return fmt.Errorf(`"mklink /%s %v %v" command failed: %v\n%v`, linktype, link, target, err, string(output))
}
return nil
})
}
func TestWalkDirectoryJunction(t *testing.T) {
testenv.MustHaveSymlink(t)
testWalkMklink(t, "J")
}
func TestWalkDirectorySymlink(t *testing.T) {
testenv.MustHaveSymlink(t)
testWalkMklink(t, "D")
}
func TestNTNamespaceSymlink(t *testing.T) {
output, _ := exec.Command("cmd", "/c", "mklink", "/?").Output()
if !strings.Contains(string(output), " /J ") {
t.Skip("skipping test because mklink command does not support junctions")
}
tmpdir, err := ioutil.TempDir("", "TestNTNamespaceSymlink")
if err != nil {
t.Fatal(err)
}
defer os.RemoveAll(tmpdir)
// Make sure tmpdir is not a symlink, otherwise tests will fail.
tmpdir, err = filepath.EvalSymlinks(tmpdir)
if err != nil {
t.Fatal(err)
}
vol := filepath.VolumeName(tmpdir)
output, err = exec.Command("cmd", "/c", "mountvol", vol, "/L").CombinedOutput()
if err != nil {
t.Fatalf("failed to run mountvol %v /L: %v %q", vol, err, output)
}
target := strings.Trim(string(output), " \n\r")
dirlink := filepath.Join(tmpdir, "dirlink")
output, err = exec.Command("cmd", "/c", "mklink", "/J", dirlink, target).CombinedOutput()
if err != nil {
t.Fatalf("failed to run mklink %v %v: %v %q", dirlink, target, err, output)
}
got, err := filepath.EvalSymlinks(dirlink)
if err != nil {
t.Fatal(err)
}
if want := vol + `\`; got != want {
t.Errorf(`EvalSymlinks(%q): got %q, want %q`, dirlink, got, want)
}
// Make sure we have sufficient privilege to run mklink command.
testenv.MustHaveSymlink(t)
file := filepath.Join(tmpdir, "file")
err = ioutil.WriteFile(file, []byte(""), 0666)
if err != nil {
t.Fatal(err)
}
target += file[len(filepath.VolumeName(file)):]
filelink := filepath.Join(tmpdir, "filelink")
output, err = exec.Command("cmd", "/c", "mklink", filelink, target).CombinedOutput()
if err != nil {
t.Fatalf("failed to run mklink %v %v: %v %q", filelink, target, err, output)
}
got, err = filepath.EvalSymlinks(filelink)
if err != nil {
t.Fatal(err)
}
if want := file; got != want {
t.Errorf(`EvalSymlinks(%q): got %q, want %q`, filelink, got, want)
}
}
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