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syscall_windows_test.go
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// Copyright 2012 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 windows_test
import (
"bufio"
"bytes"
"debug/pe"
"errors"
"fmt"
"os"
"os/exec"
"path/filepath"
"runtime"
"strconv"
"strings"
"syscall"
"testing"
"time"
"unicode/utf8"
"unsafe"
"golang.org/x/sys/windows"
)
func TestWin32finddata(t *testing.T) {
path := filepath.Join(t.TempDir(), "long_name.and_extension")
f, err := os.Create(path)
if err != nil {
t.Fatalf("failed to create %v: %v", path, err)
}
f.Close()
type X struct {
fd windows.Win32finddata
got byte
pad [10]byte // to protect ourselves
}
var want byte = 2 // it is unlikely to have this character in the filename
x := X{got: want}
pathp, _ := windows.UTF16PtrFromString(path)
h, err := windows.FindFirstFile(pathp, &(x.fd))
if err != nil {
t.Fatalf("FindFirstFile failed: %v", err)
}
err = windows.FindClose(h)
if err != nil {
t.Fatalf("FindClose failed: %v", err)
}
if x.got != want {
t.Fatalf("memory corruption: want=%d got=%d", want, x.got)
}
}
func TestFormatMessage(t *testing.T) {
dll := windows.MustLoadDLL("netevent.dll")
const TITLE_SC_MESSAGE_BOX uint32 = 0xC0001B75
const flags uint32 = syscall.FORMAT_MESSAGE_FROM_HMODULE | syscall.FORMAT_MESSAGE_ARGUMENT_ARRAY | syscall.FORMAT_MESSAGE_IGNORE_INSERTS
buf := make([]uint16, 300)
_, err := windows.FormatMessage(flags, uintptr(dll.Handle), TITLE_SC_MESSAGE_BOX, 0, buf, nil)
if err != nil {
t.Fatalf("FormatMessage for handle=%x and errno=%x failed: %v", dll.Handle, TITLE_SC_MESSAGE_BOX, err)
}
}
func abort(funcname string, err error) {
panic(funcname + " failed: " + err.Error())
}
func ExampleLoadLibrary() {
h, err := windows.LoadLibrary("kernel32.dll")
if err != nil {
abort("LoadLibrary", err)
}
defer windows.FreeLibrary(h)
proc, err := windows.GetProcAddress(h, "GetVersion")
if err != nil {
abort("GetProcAddress", err)
}
r, _, _ := syscall.Syscall(uintptr(proc), 0, 0, 0, 0)
major := byte(r)
minor := uint8(r >> 8)
build := uint16(r >> 16)
print("windows version ", major, ".", minor, " (Build ", build, ")\n")
}
func TestTOKEN_ALL_ACCESS(t *testing.T) {
if windows.TOKEN_ALL_ACCESS != 0xF01FF {
t.Errorf("TOKEN_ALL_ACCESS = %x, want 0xF01FF", windows.TOKEN_ALL_ACCESS)
}
}
func TestCreateWellKnownSid(t *testing.T) {
sid, err := windows.CreateWellKnownSid(windows.WinBuiltinAdministratorsSid)
if err != nil {
t.Fatalf("Unable to create well known sid for administrators: %v", err)
}
if got, want := sid.String(), "S-1-5-32-544"; got != want {
t.Fatalf("Builtin Administrators SID = %s, want %s", got, want)
}
}
func TestPseudoTokens(t *testing.T) {
version, err := windows.GetVersion()
if err != nil {
t.Fatal(err)
}
if ((version&0xffff)>>8)|((version&0xff)<<8) < 0x0602 {
return
}
realProcessToken, err := windows.OpenCurrentProcessToken()
if err != nil {
t.Fatal(err)
}
defer realProcessToken.Close()
realProcessUser, err := realProcessToken.GetTokenUser()
if err != nil {
t.Fatal(err)
}
pseudoProcessToken := windows.GetCurrentProcessToken()
pseudoProcessUser, err := pseudoProcessToken.GetTokenUser()
if err != nil {
t.Fatal(err)
}
if !windows.EqualSid(realProcessUser.User.Sid, pseudoProcessUser.User.Sid) {
t.Fatal("The real process token does not have the same as the pseudo process token")
}
runtime.LockOSThread()
defer runtime.UnlockOSThread()
err = windows.RevertToSelf()
if err != nil {
t.Fatal(err)
}
pseudoThreadToken := windows.GetCurrentThreadToken()
_, err = pseudoThreadToken.GetTokenUser()
if err != windows.ERROR_NO_TOKEN {
t.Fatal("Expected an empty thread token")
}
pseudoThreadEffectiveToken := windows.GetCurrentThreadEffectiveToken()
pseudoThreadEffectiveUser, err := pseudoThreadEffectiveToken.GetTokenUser()
if err != nil {
t.Fatal(nil)
}
if !windows.EqualSid(realProcessUser.User.Sid, pseudoThreadEffectiveUser.User.Sid) {
t.Fatal("The real process token does not have the same as the pseudo thread effective token, even though we aren't impersonating")
}
err = windows.ImpersonateSelf(windows.SecurityImpersonation)
if err != nil {
t.Fatal(err)
}
defer windows.RevertToSelf()
pseudoThreadUser, err := pseudoThreadToken.GetTokenUser()
if err != nil {
t.Fatal(err)
}
if !windows.EqualSid(realProcessUser.User.Sid, pseudoThreadUser.User.Sid) {
t.Fatal("The real process token does not have the same as the pseudo thread token after impersonating self")
}
}
func TestGUID(t *testing.T) {
guid, err := windows.GenerateGUID()
if err != nil {
t.Fatal(err)
}
if guid.Data1 == 0 && guid.Data2 == 0 && guid.Data3 == 0 && guid.Data4 == [8]byte{} {
t.Fatal("Got an all zero GUID, which is overwhelmingly unlikely")
}
want := fmt.Sprintf("{%08X-%04X-%04X-%04X-%012X}", guid.Data1, guid.Data2, guid.Data3, guid.Data4[:2], guid.Data4[2:])
got := guid.String()
if got != want {
t.Fatalf("String = %q; want %q", got, want)
}
guid2, err := windows.GUIDFromString(got)
if err != nil {
t.Fatal(err)
}
if guid2 != guid {
t.Fatalf("Did not parse string back to original GUID = %q; want %q", guid2, guid)
}
_, err = windows.GUIDFromString("not-a-real-guid")
if err != syscall.Errno(windows.CO_E_CLASSSTRING) {
t.Fatalf("Bad GUID string error = %v; want CO_E_CLASSSTRING", err)
}
}
func TestKnownFolderPath(t *testing.T) {
token, err := windows.OpenCurrentProcessToken()
if err != nil {
t.Fatal(err)
}
defer token.Close()
profileDir, err := token.GetUserProfileDirectory()
if err != nil {
t.Fatal(err)
}
want := filepath.Join(profileDir, "Desktop")
got, err := windows.KnownFolderPath(windows.FOLDERID_Desktop, windows.KF_FLAG_DEFAULT)
if err != nil {
t.Fatal(err)
}
if want != got {
t.Fatalf("Path = %q; want %q", got, want)
}
}
func TestRtlGetVersion(t *testing.T) {
version := windows.RtlGetVersion()
major, minor, build := windows.RtlGetNtVersionNumbers()
// Go is not explicitly added to the application compatibility database, so
// these two functions should return the same thing.
if version.MajorVersion != major || version.MinorVersion != minor || version.BuildNumber != build {
t.Fatalf("%d.%d.%d != %d.%d.%d", version.MajorVersion, version.MinorVersion, version.BuildNumber, major, minor, build)
}
}
func TestGetNamedSecurityInfo(t *testing.T) {
path, err := windows.GetSystemDirectory()
if err != nil {
t.Fatal(err)
}
sd, err := windows.GetNamedSecurityInfo(path, windows.SE_FILE_OBJECT, windows.OWNER_SECURITY_INFORMATION)
if err != nil {
t.Fatal(err)
}
if !sd.IsValid() {
t.Fatal("Invalid security descriptor")
}
sdOwner, _, err := sd.Owner()
if err != nil {
t.Fatal(err)
}
if !sdOwner.IsValid() {
t.Fatal("Invalid security descriptor owner")
}
}
func TestGetSecurityInfo(t *testing.T) {
sd, err := windows.GetSecurityInfo(windows.CurrentProcess(), windows.SE_KERNEL_OBJECT, windows.DACL_SECURITY_INFORMATION)
if err != nil {
t.Fatal(err)
}
if !sd.IsValid() {
t.Fatal("Invalid security descriptor")
}
sdStr := sd.String()
if !strings.HasPrefix(sdStr, "D:(A;") {
t.Fatalf("DACL = %q; want D:(A;...", sdStr)
}
}
func TestSddlConversion(t *testing.T) {
sd, err := windows.SecurityDescriptorFromString("O:BA")
if err != nil {
t.Fatal(err)
}
if !sd.IsValid() {
t.Fatal("Invalid security descriptor")
}
sdOwner, _, err := sd.Owner()
if err != nil {
t.Fatal(err)
}
if !sdOwner.IsValid() {
t.Fatal("Invalid security descriptor owner")
}
if !sdOwner.IsWellKnown(windows.WinBuiltinAdministratorsSid) {
t.Fatalf("Owner = %q; want S-1-5-32-544", sdOwner)
}
}
func TestBuildSecurityDescriptor(t *testing.T) {
const want = "O:SYD:(A;;GA;;;BA)"
adminSid, err := windows.CreateWellKnownSid(windows.WinBuiltinAdministratorsSid)
if err != nil {
t.Fatal(err)
}
systemSid, err := windows.CreateWellKnownSid(windows.WinLocalSystemSid)
if err != nil {
t.Fatal(err)
}
access := []windows.EXPLICIT_ACCESS{{
AccessPermissions: windows.GENERIC_ALL,
AccessMode: windows.GRANT_ACCESS,
Trustee: windows.TRUSTEE{
TrusteeForm: windows.TRUSTEE_IS_SID,
TrusteeType: windows.TRUSTEE_IS_GROUP,
TrusteeValue: windows.TrusteeValueFromSID(adminSid),
},
}}
owner := &windows.TRUSTEE{
TrusteeForm: windows.TRUSTEE_IS_SID,
TrusteeType: windows.TRUSTEE_IS_USER,
TrusteeValue: windows.TrusteeValueFromSID(systemSid),
}
sd, err := windows.BuildSecurityDescriptor(owner, nil, access, nil, nil)
if err != nil {
t.Fatal(err)
}
sd, err = sd.ToAbsolute()
if err != nil {
t.Fatal(err)
}
err = sd.SetSACL(nil, false, false)
if err != nil {
t.Fatal(err)
}
if got := sd.String(); got != want {
t.Fatalf("SD = %q; want %q", got, want)
}
sd, err = sd.ToSelfRelative()
if err != nil {
t.Fatal(err)
}
if got := sd.String(); got != want {
t.Fatalf("SD = %q; want %q", got, want)
}
sd, err = windows.NewSecurityDescriptor()
if err != nil {
t.Fatal(err)
}
acl, err := windows.ACLFromEntries(access, nil)
if err != nil {
t.Fatal(err)
}
err = sd.SetDACL(acl, true, false)
if err != nil {
t.Fatal(err)
}
err = sd.SetOwner(systemSid, false)
if err != nil {
t.Fatal(err)
}
if got := sd.String(); got != want {
t.Fatalf("SD = %q; want %q", got, want)
}
sd, err = sd.ToSelfRelative()
if err != nil {
t.Fatal(err)
}
if got := sd.String(); got != want {
t.Fatalf("SD = %q; want %q", got, want)
}
}
// getEntriesFromACL returns a list of explicit access control entries associated with the given ACL.
func getEntriesFromACL(acl *windows.ACL) (aces []*windows.ACCESS_ALLOWED_ACE, err error) {
aces = make([]*windows.ACCESS_ALLOWED_ACE, acl.AceCount)
for i := uint16(0); i < acl.AceCount; i++ {
err = windows.GetAce(acl, uint32(i), &aces[i])
if err != nil {
return nil, err
}
}
return aces, nil
}
func TestGetACEsFromACL(t *testing.T) {
// Create a temporary file to set ACLs on and test getting the ACEs from the ACL.
f, err := os.CreateTemp("", "foo.lish")
defer os.Remove(f.Name())
if err = f.Close(); err != nil {
t.Fatal(err)
}
// Well-known SID Strings:
// https://support.microsoft.com/en-us/help/243330/well-known-security-identifiers-in-windows-operating-systems
ownerSid, err := windows.StringToSid("S-1-3-2")
if err != nil {
t.Fatal(err)
}
groupSid, err := windows.StringToSid("S-1-3-3")
if err != nil {
t.Fatal(err)
}
worldSid, err := windows.StringToSid("S-1-1-0")
if err != nil {
t.Fatal(err)
}
ownerPermissions := windows.ACCESS_MASK(windows.GENERIC_ALL)
groupPermissions := windows.ACCESS_MASK(windows.GENERIC_READ | windows.GENERIC_EXECUTE)
worldPermissions := windows.ACCESS_MASK(windows.GENERIC_READ)
access := []windows.EXPLICIT_ACCESS{
{
AccessPermissions: ownerPermissions,
AccessMode: windows.GRANT_ACCESS,
Trustee: windows.TRUSTEE{
TrusteeForm: windows.TRUSTEE_IS_SID,
TrusteeValue: windows.TrusteeValueFromSID(ownerSid),
},
},
{
AccessPermissions: groupPermissions,
AccessMode: windows.GRANT_ACCESS,
Trustee: windows.TRUSTEE{
TrusteeForm: windows.TRUSTEE_IS_SID,
TrusteeType: windows.TRUSTEE_IS_GROUP,
TrusteeValue: windows.TrusteeValueFromSID(groupSid),
},
},
{
AccessPermissions: worldPermissions,
AccessMode: windows.GRANT_ACCESS,
Trustee: windows.TRUSTEE{
TrusteeForm: windows.TRUSTEE_IS_SID,
TrusteeType: windows.TRUSTEE_IS_GROUP,
TrusteeValue: windows.TrusteeValueFromSID(worldSid),
},
},
}
acl, err := windows.ACLFromEntries(access, nil)
if err != nil {
t.Fatal(err)
}
// Set new ACL.
err = windows.SetNamedSecurityInfo(
f.Name(),
windows.SE_FILE_OBJECT,
windows.DACL_SECURITY_INFORMATION|windows.PROTECTED_DACL_SECURITY_INFORMATION,
nil,
nil,
acl,
nil,
)
if err != nil {
t.Fatal(err)
}
descriptor, err := windows.GetNamedSecurityInfo(
f.Name(),
windows.SE_FILE_OBJECT,
windows.DACL_SECURITY_INFORMATION|windows.PROTECTED_DACL_SECURITY_INFORMATION|windows.OWNER_SECURITY_INFORMATION|windows.GROUP_SECURITY_INFORMATION,
)
if err != nil {
t.Fatal(err)
}
dacl, _, err := descriptor.DACL()
if err != nil {
t.Fatal(err)
}
owner, _, err := descriptor.Owner()
if err != nil {
t.Fatal(err)
}
group, _, err := descriptor.Group()
if err != nil {
t.Fatal(err)
}
entries, err := getEntriesFromACL(dacl)
if err != nil {
t.Fatal(err)
}
if len(entries) != 3 {
t.Fatalf("Expected newly set ACL to only have 3 entries.")
}
// https://docs.microsoft.com/en-us/windows/win32/fileio/file-access-rights-constants
read := uint32(windows.FILE_READ_DATA | windows.FILE_READ_ATTRIBUTES)
write := uint32(windows.FILE_WRITE_DATA | windows.FILE_APPEND_DATA | windows.FILE_WRITE_ATTRIBUTES | windows.FILE_WRITE_EA)
execute := uint32(windows.FILE_READ_DATA | windows.FILE_EXECUTE)
// Check the set ACEs. We should have the equivalent of 754.
for _, entry := range entries {
mask := uint32(entry.Mask)
actual := 0
if mask&read == read {
actual |= 4
}
if mask&write == write {
actual |= 2
}
if mask&execute == execute {
actual |= 1
}
entrySid := (*windows.SID)(unsafe.Pointer(&entry.SidStart))
if owner.Equals(entrySid) {
if actual != 7 {
t.Fatalf("Expected owner to have FullAccess permissions.")
}
} else if group.Equals(entrySid) {
if actual != 5 {
t.Fatalf("Expected group to have only Read and Execute permissions.")
}
} else if worldSid.Equals(entrySid) {
if actual != 4 {
t.Fatalf("Expected the World to have only Read permissions.")
}
} else {
t.Fatalf("Unexpected SID in ACEs: %s", entrySid.String())
}
}
}
func TestGetDiskFreeSpaceEx(t *testing.T) {
cwd, err := windows.UTF16PtrFromString(".")
if err != nil {
t.Fatalf(`failed to call UTF16PtrFromString("."): %v`, err)
}
var freeBytesAvailableToCaller, totalNumberOfBytes, totalNumberOfFreeBytes uint64
if err := windows.GetDiskFreeSpaceEx(cwd, &freeBytesAvailableToCaller, &totalNumberOfBytes, &totalNumberOfFreeBytes); err != nil {
t.Fatalf("failed to call GetDiskFreeSpaceEx: %v", err)
}
if freeBytesAvailableToCaller == 0 {
t.Errorf("freeBytesAvailableToCaller: got 0; want > 0")
}
if totalNumberOfBytes == 0 {
t.Errorf("totalNumberOfBytes: got 0; want > 0")
}
if totalNumberOfFreeBytes == 0 {
t.Errorf("totalNumberOfFreeBytes: got 0; want > 0")
}
}
func TestGetPreferredUILanguages(t *testing.T) {
tab := map[string]func(flags uint32) ([]string, error){
"GetProcessPreferredUILanguages": windows.GetProcessPreferredUILanguages,
"GetThreadPreferredUILanguages": windows.GetThreadPreferredUILanguages,
"GetUserPreferredUILanguages": windows.GetUserPreferredUILanguages,
"GetSystemPreferredUILanguages": windows.GetSystemPreferredUILanguages,
}
for fName, f := range tab {
lang, err := f(windows.MUI_LANGUAGE_ID)
if err != nil {
t.Errorf(`failed to call %v(MUI_LANGUAGE_ID): %v`, fName, err)
}
for _, l := range lang {
_, err := strconv.ParseUint(l, 16, 16)
if err != nil {
t.Errorf(`%v(MUI_LANGUAGE_ID) returned unexpected LANGID: %v`, fName, l)
}
}
lang, err = f(windows.MUI_LANGUAGE_NAME)
if err != nil {
t.Errorf(`failed to call %v(MUI_LANGUAGE_NAME): %v`, fName, err)
}
}
}
func TestProcessWorkingSetSizeEx(t *testing.T) {
// Grab a handle to the current process
hProcess := windows.CurrentProcess()
// Allocate memory to store the result of the query
var minimumWorkingSetSize, maximumWorkingSetSize uintptr
// Make the system-call
var flag uint32
windows.GetProcessWorkingSetSizeEx(hProcess, &minimumWorkingSetSize, &maximumWorkingSetSize, &flag)
// Set the new limits to the current ones
if err := windows.SetProcessWorkingSetSizeEx(hProcess, minimumWorkingSetSize, maximumWorkingSetSize, flag); err != nil {
t.Error(err)
}
}
func TestJobObjectInfo(t *testing.T) {
jo, err := windows.CreateJobObject(nil, nil)
if err != nil {
t.Fatalf("CreateJobObject failed: %v", err)
}
defer windows.CloseHandle(jo)
var info windows.JOBOBJECT_EXTENDED_LIMIT_INFORMATION
err = windows.QueryInformationJobObject(jo, windows.JobObjectExtendedLimitInformation,
uintptr(unsafe.Pointer(&info)), uint32(unsafe.Sizeof(info)), nil)
if err != nil {
t.Fatalf("QueryInformationJobObject failed: %v", err)
}
const wantMemLimit = 4 * 1024
info.BasicLimitInformation.LimitFlags |= windows.JOB_OBJECT_LIMIT_PROCESS_MEMORY
info.ProcessMemoryLimit = wantMemLimit
_, err = windows.SetInformationJobObject(jo, windows.JobObjectExtendedLimitInformation,
uintptr(unsafe.Pointer(&info)), uint32(unsafe.Sizeof(info)))
if err != nil {
t.Fatalf("SetInformationJobObject failed: %v", err)
}
err = windows.QueryInformationJobObject(jo, windows.JobObjectExtendedLimitInformation,
uintptr(unsafe.Pointer(&info)), uint32(unsafe.Sizeof(info)), nil)
if err != nil {
t.Fatalf("QueryInformationJobObject failed: %v", err)
}
if have := info.ProcessMemoryLimit; wantMemLimit != have {
t.Errorf("ProcessMemoryLimit is wrong: want %v have %v", wantMemLimit, have)
}
}
func TestIsWow64Process2(t *testing.T) {
var processMachine, nativeMachine uint16
err := windows.IsWow64Process2(windows.CurrentProcess(), &processMachine, &nativeMachine)
if errors.Is(err, windows.ERROR_PROC_NOT_FOUND) {
maj, min, build := windows.RtlGetNtVersionNumbers()
if maj < 10 || (maj == 10 && min == 0 && build < 17763) {
t.Skip("not available on older versions of Windows")
return
}
}
if err != nil {
t.Fatalf("IsWow64Process2 failed: %v", err)
}
if processMachine == pe.IMAGE_FILE_MACHINE_UNKNOWN {
processMachine = nativeMachine
}
switch {
case processMachine == pe.IMAGE_FILE_MACHINE_AMD64 && runtime.GOARCH == "amd64":
case processMachine == pe.IMAGE_FILE_MACHINE_I386 && runtime.GOARCH == "386":
case processMachine == pe.IMAGE_FILE_MACHINE_ARMNT && runtime.GOARCH == "arm":
case processMachine == pe.IMAGE_FILE_MACHINE_ARM64 && runtime.GOARCH == "arm64":
default:
t.Errorf("IsWow64Process2 is wrong: want %v have %v", runtime.GOARCH, processMachine)
}
}
func TestNTStatusString(t *testing.T) {
want := "The name limit for the local computer network adapter card was exceeded."
got := windows.STATUS_TOO_MANY_NAMES.Error()
if want != got {
t.Errorf("NTStatus.Error did not return an expected error string - want %q; got %q", want, got)
}
}
func TestNTStatusConversion(t *testing.T) {
want := windows.ERROR_TOO_MANY_NAMES
got := windows.STATUS_TOO_MANY_NAMES.Errno()
if want != got {
t.Errorf("NTStatus.Errno = %q (0x%x); want %q (0x%x)", got.Error(), got, want.Error(), want)
}
}
func TestPEBFilePath(t *testing.T) {
peb := windows.RtlGetCurrentPeb()
if peb == nil || peb.Ldr == nil {
t.Error("unable to retrieve PEB with valid Ldr")
}
var entry *windows.LDR_DATA_TABLE_ENTRY
for cur := peb.Ldr.InMemoryOrderModuleList.Flink; cur != &peb.Ldr.InMemoryOrderModuleList; cur = cur.Flink {
e := (*windows.LDR_DATA_TABLE_ENTRY)(unsafe.Pointer(uintptr(unsafe.Pointer(cur)) - unsafe.Offsetof(windows.LDR_DATA_TABLE_ENTRY{}.InMemoryOrderLinks)))
if e.DllBase == peb.ImageBaseAddress {
entry = e
break
}
}
if entry == nil {
t.Error("unable to find Ldr entry for current process")
}
osPath, err := os.Executable()
if err != nil {
t.Errorf("unable to get path to current executable: %v", err)
}
pebPath := entry.FullDllName.String()
if osPath != pebPath {
t.Errorf("peb.Ldr.{entry}.FullDllName = %#q; want %#q", pebPath, osPath)
}
paramPath := peb.ProcessParameters.ImagePathName.String()
if osPath != paramPath {
t.Errorf("peb.ProcessParameters.ImagePathName.{entry}.ImagePathName = %#q; want %#q", paramPath, osPath)
}
osCwd, err := os.Getwd()
if err != nil {
t.Errorf("unable to get working directory: %v", err)
}
osCwd = filepath.Clean(osCwd)
paramCwd := filepath.Clean(peb.ProcessParameters.CurrentDirectory.DosPath.String())
if paramCwd != osCwd {
t.Errorf("peb.ProcessParameters.CurrentDirectory.DosPath = %#q; want %#q", paramCwd, osCwd)
}
}
func TestResourceExtraction(t *testing.T) {
system32, err := windows.GetSystemDirectory()
if err != nil {
t.Errorf("unable to find system32 directory: %v", err)
}
cmd, err := windows.LoadLibrary(filepath.Join(system32, "cmd.exe"))
if err != nil {
t.Errorf("unable to load cmd.exe: %v", err)
}
defer windows.FreeLibrary(cmd)
rsrc, err := windows.FindResource(cmd, windows.CREATEPROCESS_MANIFEST_RESOURCE_ID, windows.RT_MANIFEST)
if err != nil {
t.Errorf("unable to find cmd.exe manifest resource: %v", err)
}
manifest, err := windows.LoadResourceData(cmd, rsrc)
if err != nil {
t.Errorf("unable to load cmd.exe manifest resource data: %v", err)
}
if !bytes.Contains(manifest, []byte("</assembly>")) {
t.Errorf("did not find </assembly> in manifest")
}
}
func FuzzComposeCommandLine(f *testing.F) {
f.Add(`C:\foo.exe /bar /baz "-bag qux"`)
f.Add(`"C:\Program Files\Go\bin\go.exe" env`)
f.Add(`C:\"Program Files"\Go\bin\go.exe env`)
f.Add(`C:\"Program Files"\Go\bin\go.exe env`)
f.Add(`C:\"Pro"gram Files\Go\bin\go.exe env`)
f.Add(``)
f.Add(` `)
f.Add(`W\"0`)
f.Add("\"\f")
f.Add("\f")
f.Add("\x16")
f.Add(`"" ` + strings.Repeat("a", 8193))
f.Add(strings.Repeat(`"" `, 8193))
f.Add("\x00abcd")
f.Add("ab\x00cd")
f.Add("abcd\x00")
f.Add("\x00abcd\x00")
f.Add("\x00ab\x00cd\x00")
f.Add("\x00\x00\x00")
f.Add("\x16\x00\x16")
f.Add(`C:\Program Files\Go\bin\go.exe` + "\x00env")
f.Add(`"C:\Program Files\Go\bin\go.exe"` + "\x00env")
f.Add(`C:\"Program Files"\Go\bin\go.exe` + "\x00env")
f.Add(`C:\"Pro"gram Files\Go\bin\go.exe` + "\x00env")
f.Add("\x00" + strings.Repeat("a", 8192))
f.Add("\x00" + strings.Repeat("a", 8193))
f.Add(strings.Repeat("\x00"+strings.Repeat("a", 8192), 4))
f.Fuzz(func(t *testing.T, s string) {
// DecomposeCommandLine is the “control” for our experiment:
// if it returns a particular list of arguments, then we know
// it must be possible to create an input string that produces
// exactly those arguments.
//
// However, DecomposeCommandLine returns an error if the string
// contains a NUL byte. In that case, we will fall back to
// strings.Split, and be a bit more permissive about the results.
args, err := windows.DecomposeCommandLine(s)
argsFromSplit := false
if err == nil {
if testing.Verbose() {
t.Logf("DecomposeCommandLine(%#q) = %#q", s, args)
}
} else {
t.Logf("DecomposeCommandLine: %v", err)
if !strings.Contains(s, "\x00") {
// The documentation for CommandLineToArgv takes for granted that
// the first argument is a valid file path, and doesn't describe any
// specific behavior for malformed arguments. Empirically it seems to
// tolerate anything we throw at it, but if we discover cases where it
// actually returns an error we might need to relax this check.
t.Fatal("(error unexpected)")
}
// Since DecomposeCommandLine can't handle this string,
// interpret it as the raw arguments to ComposeCommandLine.
args = strings.Split(s, "\x00")
argsFromSplit = true
for i, arg := range args {
if !utf8.ValidString(arg) {
// We need to encode the arguments as UTF-16 to pass them to
// CommandLineToArgvW, so skip inputs that are not valid: they might
// have one or more runes converted to replacement characters.
t.Skipf("skipping: input %d is not valid UTF-8", i)
}
}
if testing.Verbose() {
t.Logf("using input: %#q", args)
}
}
// It's ok if we compose a different command line than what was read.
// Just check that we are able to compose something that round-trips
// to the same results as the original.
commandLine := windows.ComposeCommandLine(args)
t.Logf("ComposeCommandLine(_) = %#q", commandLine)
got, err := windows.DecomposeCommandLine(commandLine)
if err != nil {
t.Fatalf("DecomposeCommandLine: unexpected error: %v", err)
}
if testing.Verbose() {
t.Logf("DecomposeCommandLine(_) = %#q", got)
}
var badMatches []int
for i := range args {
if i >= len(got) {
badMatches = append(badMatches, i)
continue
}
want := args[i]
if got[i] != want {
if i == 0 && argsFromSplit {
// It is possible that args[0] cannot be encoded exactly, because
// CommandLineToArgvW doesn't unescape that argument in the same way
// as the others: since the first argument is assumed to be the name
// of the program itself, we only have the option of quoted or not.
//
// If args[0] contains a space or control character, we must quote it
// to avoid it being split into multiple arguments.
// If args[0] already starts with a quote character, we have no way
// to indicate that character is part of the literal argument.
// In either case, if the string already contains a quote character
// we must avoid misinterpreting that character as the end of the
// quoted argument string.
//
// Unfortunately, ComposeCommandLine does not return an error, so we
// can't report existing quote characters as errors.
// Instead, we strip out the problematic quote characters from the
// argument, and quote the remainder.
// For paths like C:\"Program Files"\Go\bin\go.exe that is arguably
// what the caller intended anyway, and for other strings it seems
// less harmful than corrupting the subsequent arguments.
if got[i] == strings.ReplaceAll(want, `"`, ``) {
continue
}
}
badMatches = append(badMatches, i)
}
}
if len(badMatches) != 0 {
t.Errorf("Incorrect decomposition at indices: %v", badMatches)
}
})
}
func TestWinVerifyTrust(t *testing.T) {
evsignedfile := `.\testdata\ev-signed-file.exe`
evsignedfile16, err := windows.UTF16PtrFromString(evsignedfile)
if err != nil {
t.Fatalf("unable to get utf16 of %s: %v", evsignedfile, err)
}
data := &windows.WinTrustData{
Size: uint32(unsafe.Sizeof(windows.WinTrustData{})),
UIChoice: windows.WTD_UI_NONE,
RevocationChecks: windows.WTD_REVOKE_NONE, // No revocation checking, in case the tests don't have network connectivity.
UnionChoice: windows.WTD_CHOICE_FILE,
StateAction: windows.WTD_STATEACTION_VERIFY,
FileOrCatalogOrBlobOrSgnrOrCert: unsafe.Pointer(&windows.WinTrustFileInfo{
Size: uint32(unsafe.Sizeof(windows.WinTrustFileInfo{})),
FilePath: evsignedfile16,
}),
}
verifyErr := windows.WinVerifyTrustEx(windows.InvalidHWND, &windows.WINTRUST_ACTION_GENERIC_VERIFY_V2, data)
data.StateAction = windows.WTD_STATEACTION_CLOSE
closeErr := windows.WinVerifyTrustEx(windows.InvalidHWND, &windows.WINTRUST_ACTION_GENERIC_VERIFY_V2, data)
if verifyErr != nil {
t.Errorf("%s did not verify: %v", evsignedfile, verifyErr)
}
if closeErr != nil {
t.Errorf("unable to free verification resources: %v", closeErr)
}
// Now that we've verified the legitimate file verifies, let's corrupt it and see if it correctly fails.
corruptedEvsignedfile := filepath.Join(t.TempDir(), "corrupted-file")
evsignedfileBytes, err := os.ReadFile(evsignedfile)
if err != nil {
t.Fatalf("unable to read %s bytes: %v", evsignedfile, err)
}
if len(evsignedfileBytes) > 0 {
evsignedfileBytes[len(evsignedfileBytes)/2-1]++
}
err = os.WriteFile(corruptedEvsignedfile, evsignedfileBytes, 0755)
if err != nil {
t.Fatalf("unable to write corrupted ntoskrnl.exe bytes: %v", err)
}
evsignedfile16, err = windows.UTF16PtrFromString(corruptedEvsignedfile)
if err != nil {
t.Fatalf("unable to get utf16 of ntoskrnl.exe: %v", err)
}
data = &windows.WinTrustData{
Size: uint32(unsafe.Sizeof(windows.WinTrustData{})),
UIChoice: windows.WTD_UI_NONE,
RevocationChecks: windows.WTD_REVOKE_NONE, // No revocation checking, in case the tests don't have network connectivity.
UnionChoice: windows.WTD_CHOICE_FILE,
StateAction: windows.WTD_STATEACTION_VERIFY,
FileOrCatalogOrBlobOrSgnrOrCert: unsafe.Pointer(&windows.WinTrustFileInfo{
Size: uint32(unsafe.Sizeof(windows.WinTrustFileInfo{})),
FilePath: evsignedfile16,
}),
}
verifyErr = windows.WinVerifyTrustEx(windows.InvalidHWND, &windows.WINTRUST_ACTION_GENERIC_VERIFY_V2, data)
data.StateAction = windows.WTD_STATEACTION_CLOSE
closeErr = windows.WinVerifyTrustEx(windows.InvalidHWND, &windows.WINTRUST_ACTION_GENERIC_VERIFY_V2, data)
if verifyErr != windows.Errno(windows.TRUST_E_BAD_DIGEST) {
t.Errorf("%s did not fail to verify as expected: %v", corruptedEvsignedfile, verifyErr)
}
if closeErr != nil {
t.Errorf("unable to free verification resources: %v", closeErr)
}
}
func TestEnumProcesses(t *testing.T) {
var (
pids [2]uint32
outSize uint32
)
err := windows.EnumProcesses(pids[:], &outSize)
if err != nil {
t.Fatalf("unable to enumerate processes: %v", err)
}
// Regression check for go.dev/issue/60223
if outSize != 8 {
t.Errorf("unexpected bytes returned: %d", outSize)
}
// Most likely, this should be [0, 4].
// 0 is the system idle pseudo-process. 4 is the initial system process ID.
// This test expects that at least one of the PIDs is not 0.
if pids[0] == 0 && pids[1] == 0 {
t.Errorf("all PIDs are 0")
}
}
func TestProcessModules(t *testing.T) {
process, err := windows.GetCurrentProcess()
if err != nil {
t.Fatalf("unable to get current process: %v", err)
}
// NB: Assume that we're always the first module. This technically isn't documented anywhere (that I could find), but seems to always hold.
var module windows.Handle
var cbNeeded uint32
err = windows.EnumProcessModules(process, &module, uint32(unsafe.Sizeof(module)), &cbNeeded)
if err != nil {
t.Fatalf("EnumProcessModules failed: %v", err)
}
var moduleEx windows.Handle
err = windows.EnumProcessModulesEx(process, &moduleEx, uint32(unsafe.Sizeof(moduleEx)), &cbNeeded, windows.LIST_MODULES_DEFAULT)
if err != nil {
t.Fatalf("EnumProcessModulesEx failed: %v", err)
}
if module != moduleEx {
t.Fatalf("module from EnumProcessModules does not match EnumProcessModulesEx: %v != %v", module, moduleEx)
}
exePath, err := os.Executable()
if err != nil {
t.Fatalf("unable to get current executable path: %v", err)
}
modulePathUTF16 := make([]uint16, len(exePath)+1)
err = windows.GetModuleFileNameEx(process, module, &modulePathUTF16[0], uint32(len(modulePathUTF16)))
if err != nil {
t.Fatalf("GetModuleFileNameEx failed: %v", err)
}
modulePath := windows.UTF16ToString(modulePathUTF16)
if modulePath != exePath {
t.Fatalf("module does not match executable for GetModuleFileNameEx: %s != %s", modulePath, exePath)
}
err = windows.GetModuleBaseName(process, module, &modulePathUTF16[0], uint32(len(modulePathUTF16)))
if err != nil {
t.Fatalf("GetModuleBaseName failed: %v", err)
}
modulePath = windows.UTF16ToString(modulePathUTF16)
baseExePath := filepath.Base(exePath)
if modulePath != baseExePath {
t.Fatalf("module does not match executable for GetModuleBaseName: %s != %s", modulePath, baseExePath)
}
var moduleInfo windows.ModuleInfo
err = windows.GetModuleInformation(process, module, &moduleInfo, uint32(unsafe.Sizeof(moduleInfo)))
if err != nil {
t.Fatalf("GetModuleInformation failed: %v", err)