/// <summary>
/// Asynchronously waits for the process to exit.
/// </summary>
public static Task WaitForExitAsync(this Process process)
{
if (process.HasExited)
{
return(Task.CompletedTask);
}
var safeProcessHandle = process.SafeHandle;
if (safeProcessHandle.IsClosed)
{
throw new ObjectDisposedException("Process");
}
var tcs = new TaskCompletionSource <object?>();
var waitHandle = new ProcessWaitHandle(safeProcessHandle);
RegisteredWaitHandle?registeredWaitHandle = null;
lock (tcs) {
registeredWaitHandle = ThreadPool.RegisterWaitForSingleObject(waitHandle, WaitForExitAsyncCallback, null, -1, true);
}
return(tcs.Task);
void WaitForExitAsyncCallback(object context, bool wasSignaled)
{
// The lock is used to ensure `registeredWaitHandle` is initialized here
// even if the process terminates while `RegisterWaitForSingleObject` is returning.
lock (tcs) {
registeredWaitHandle !.Unregister(null);
}
waitHandle.Close();
tcs.SetResult(null);
}
}
IntPtr GetProcessHandle(Kernel32.ProcessAccessFlags access, bool throwIfExited)
{
if (_haveProcessHandle)
{
if (throwIfExited)
{
// Since haveProcessHandle is true, we know we have the process handle
// open with at least SYNCHRONIZE access, so we can wait on it with
// zero timeout to see if the process has exited.
ProcessWaitHandle waitHandle = null;
try {
waitHandle = new ProcessWaitHandle(_processHandle);
if (waitHandle.WaitOne(0, false))
{
throw new InvalidOperationException("Process has exited");
}
} finally {
waitHandle?.Close();
}
}
return(_processHandle);
}
var handle = Kernel32.OpenProcess(access, false, _inner.Id);
if (throwIfExited && (access & Kernel32.ProcessAccessFlags.QueryInformation) != 0)
{
if (Kernel32.GetExitCodeProcess(handle, out var exitCode) && exitCode != Kernel32.STILL_ACTIVE)
{
throw new InvalidOperationException("Process has exited");
}
}
return(handle);
}
private void WaitForExitAsyncCallback(object context, bool wasSignaled)
{
waitForExitAsyncRegisteredWaitHandle.Unregister(null);
waitForExitAsyncRegisteredWaitHandle = null;
waitForExitAsyncWaitHandle.Close();
waitForExitAsyncWaitHandle = null;
// Wait until the output is processed
// if (standardOutputTask != null)
// await standardOutputTask;
// if (standardErrorTask != null)
// await standardErrorTask;
waitForExitTCS.SetResult(null);
}
private static unsafe int ExecWaitWithCaptureUnimpersonated(SafeUserTokenHandle userToken, string cmd, string currentDir, TempFileCollection tempFiles, ref string outputName, ref string errorName, string trueCmdLine)
{
IntSecurity.UnmanagedCode.Demand();
FileStream output;
FileStream error;
int retValue = 0;
if (outputName == null || outputName.Length == 0)
{
outputName = tempFiles.AddExtension("out");
}
if (errorName == null || errorName.Length == 0)
{
errorName = tempFiles.AddExtension("err");
}
// Create the files
output = CreateInheritedFile(outputName);
error = CreateInheritedFile(errorName);
bool success = false;
SafeNativeMethods.PROCESS_INFORMATION pi = new SafeNativeMethods.PROCESS_INFORMATION();
SafeProcessHandle procSH = new SafeProcessHandle();
SafeThreadHandle threadSH = new SafeThreadHandle();
SafeUserTokenHandle primaryToken = null;
try {
// Output the command line...
StreamWriter sw = new StreamWriter(output, Encoding.UTF8);
sw.Write(currentDir);
sw.Write("> ");
// 'true' command line is used in case the command line points to
// a response file
sw.WriteLine(trueCmdLine != null ? trueCmdLine : cmd);
sw.WriteLine();
sw.WriteLine();
sw.Flush();
NativeMethods.STARTUPINFO si = new NativeMethods.STARTUPINFO();
si.cb = Marshal.SizeOf(si);
#if FEATURE_PAL
si.dwFlags = NativeMethods.STARTF_USESTDHANDLES;
#else //!FEATURE_PAL
si.dwFlags = NativeMethods.STARTF_USESTDHANDLES | NativeMethods.STARTF_USESHOWWINDOW;
si.wShowWindow = NativeMethods.SW_HIDE;
#endif //!FEATURE_PAL
si.hStdOutput = output.SafeFileHandle;
si.hStdError = error.SafeFileHandle;
si.hStdInput = new SafeFileHandle(UnsafeNativeMethods.GetStdHandle(NativeMethods.STD_INPUT_HANDLE), false);
//
// Prepare the environment
//
#if PLATFORM_UNIX
StringDictionary environment = new CaseSensitiveStringDictionary();
#else
StringDictionary environment = new StringDictionary();
#endif // PLATFORM_UNIX
// Add the current environment
foreach (DictionaryEntry entry in Environment.GetEnvironmentVariables())
{
environment[(string)entry.Key] = (string)entry.Value;
}
// Add the flag to indicate restricted security in the process
environment["_ClrRestrictSecAttributes"] = "1";
#if DEBUG
environment["OANOCACHE"] = "1";
#endif
// set up the environment block parameter
byte[] environmentBytes = EnvironmentBlock.ToByteArray(environment, false);
fixed(byte *environmentBytesPtr = environmentBytes)
{
IntPtr environmentPtr = new IntPtr((void *)environmentBytesPtr);
if (userToken == null || userToken.IsInvalid)
{
RuntimeHelpers.PrepareConstrainedRegions();
try {} finally {
success = NativeMethods.CreateProcess(
null, // String lpApplicationName,
new StringBuilder(cmd), // String lpCommandLine,
null, // SECURITY_ATTRIBUTES lpProcessAttributes,
null, // SECURITY_ATTRIBUTES lpThreadAttributes,
true, // bool bInheritHandles,
0, // int dwCreationFlags,
environmentPtr, // IntPtr lpEnvironment,
currentDir, // String lpCurrentDirectory,
si, // STARTUPINFO lpStartupInfo,
pi); // PROCESS_INFORMATION lpProcessInformation);
if (pi.hProcess != (IntPtr)0 && pi.hProcess != (IntPtr)NativeMethods.INVALID_HANDLE_VALUE)
{
procSH.InitialSetHandle(pi.hProcess);
}
if (pi.hThread != (IntPtr)0 && pi.hThread != (IntPtr)NativeMethods.INVALID_HANDLE_VALUE)
{
threadSH.InitialSetHandle(pi.hThread);
}
}
}
else
{
#if FEATURE_PAL
throw new NotSupportedException();
#else
success = SafeUserTokenHandle.DuplicateTokenEx(
userToken,
NativeMethods.TOKEN_ALL_ACCESS,
null,
NativeMethods.IMPERSONATION_LEVEL_SecurityImpersonation,
NativeMethods.TOKEN_TYPE_TokenPrimary,
out primaryToken
);
if (success)
{
RuntimeHelpers.PrepareConstrainedRegions();
try {} finally {
success = NativeMethods.CreateProcessAsUser(
primaryToken, // int token,
null, // String lpApplicationName,
cmd, // String lpCommandLine,
null, // SECURITY_ATTRIBUTES lpProcessAttributes,
null, // SECURITY_ATTRIBUTES lpThreadAttributes,
true, // bool bInheritHandles,
0, // int dwCreationFlags,
new HandleRef(null, environmentPtr), // IntPtr lpEnvironment,
currentDir, // String lpCurrentDirectory,
si, // STARTUPINFO lpStartupInfo,
pi); // PROCESS_INFORMATION lpProcessInformation);
if (pi.hProcess != (IntPtr)0 && pi.hProcess != (IntPtr)NativeMethods.INVALID_HANDLE_VALUE)
{
procSH.InitialSetHandle(pi.hProcess);
}
if (pi.hThread != (IntPtr)0 && pi.hThread != (IntPtr)NativeMethods.INVALID_HANDLE_VALUE)
{
threadSH.InitialSetHandle(pi.hThread);
}
}
}
#endif // !FEATURE_PAL
}
}
}
finally {
// Close the file handles
if (!success && (primaryToken != null && !primaryToken.IsInvalid))
{
primaryToken.Close();
primaryToken = null;
}
output.Close();
error.Close();
}
if (success)
{
try {
bool signaled;
ProcessWaitHandle pwh = null;
try {
pwh = new ProcessWaitHandle(procSH);
signaled = pwh.WaitOne(ProcessTimeOut, false);
} finally {
if (pwh != null)
{
pwh.Close();
}
}
// Check for timeout
if (!signaled)
{
throw new ExternalException(SR.GetString(SR.ExecTimeout, cmd), NativeMethods.WAIT_TIMEOUT);
}
// Check the process's exit code
int status = NativeMethods.STILL_ACTIVE;
if (!NativeMethods.GetExitCodeProcess(procSH, out status))
{
throw new ExternalException(SR.GetString(SR.ExecCantGetRetCode, cmd), Marshal.GetLastWin32Error());
}
retValue = status;
}
finally {
procSH.Close();
threadSH.Close();
if (primaryToken != null && !primaryToken.IsInvalid)
{
primaryToken.Close();
}
}
}
else
{
int err = Marshal.GetLastWin32Error();
if (err == NativeMethods.ERROR_NOT_ENOUGH_MEMORY)
{
throw new OutOfMemoryException();
}
Win32Exception win32Exception = new Win32Exception(err);
ExternalException ex = new ExternalException(SR.GetString(SR.ExecCantExec, cmd), win32Exception);
throw ex;
}
return(retValue);
}
private static unsafe int ExecWaitWithCaptureUnimpersonated(SafeUserTokenHandle userToken, string cmd, string currentDir, TempFileCollection tempFiles, ref string outputName, ref string errorName, string trueCmdLine)
{
IntSecurity.UnmanagedCode.Demand();
if ((outputName == null) || (outputName.Length == 0))
{
outputName = tempFiles.AddExtension("out");
}
if ((errorName == null) || (errorName.Length == 0))
{
errorName = tempFiles.AddExtension("err");
}
FileStream stream = CreateInheritedFile(outputName);
FileStream stream2 = CreateInheritedFile(errorName);
bool flag = false;
Microsoft.Win32.SafeNativeMethods.PROCESS_INFORMATION lpProcessInformation = new Microsoft.Win32.SafeNativeMethods.PROCESS_INFORMATION();
Microsoft.Win32.SafeHandles.SafeProcessHandle processHandle = new Microsoft.Win32.SafeHandles.SafeProcessHandle();
Microsoft.Win32.SafeHandles.SafeThreadHandle handle2 = new Microsoft.Win32.SafeHandles.SafeThreadHandle();
SafeUserTokenHandle hNewToken = null;
try
{
Microsoft.Win32.NativeMethods.STARTUPINFO startupinfo;
StreamWriter writer = new StreamWriter(stream, Encoding.UTF8);
writer.Write(currentDir);
writer.Write("> ");
writer.WriteLine((trueCmdLine != null) ? trueCmdLine : cmd);
writer.WriteLine();
writer.WriteLine();
writer.Flush();
startupinfo = new Microsoft.Win32.NativeMethods.STARTUPINFO {
cb = Marshal.SizeOf(startupinfo),
dwFlags = 0x101,
wShowWindow = 0,
hStdOutput = stream.SafeFileHandle,
hStdError = stream2.SafeFileHandle,
hStdInput = new SafeFileHandle(Microsoft.Win32.UnsafeNativeMethods.GetStdHandle(-10), false)
};
StringDictionary sd = new StringDictionary();
foreach (DictionaryEntry entry in Environment.GetEnvironmentVariables())
{
sd[(string)entry.Key] = (string)entry.Value;
}
sd["_ClrRestrictSecAttributes"] = "1";
byte[] buffer = EnvironmentBlock.ToByteArray(sd, false);
try
{
fixed(byte *numRef = buffer)
{
IntPtr lpEnvironment = new IntPtr((void *)numRef);
if ((userToken == null) || userToken.IsInvalid)
{
RuntimeHelpers.PrepareConstrainedRegions();
try
{
goto Label_0325;
}
finally
{
flag = Microsoft.Win32.NativeMethods.CreateProcess(null, new StringBuilder(cmd), null, null, true, 0, lpEnvironment, currentDir, startupinfo, lpProcessInformation);
if ((lpProcessInformation.hProcess != IntPtr.Zero) && (lpProcessInformation.hProcess != Microsoft.Win32.NativeMethods.INVALID_HANDLE_VALUE))
{
processHandle.InitialSetHandle(lpProcessInformation.hProcess);
}
if ((lpProcessInformation.hThread != IntPtr.Zero) && (lpProcessInformation.hThread != Microsoft.Win32.NativeMethods.INVALID_HANDLE_VALUE))
{
handle2.InitialSetHandle(lpProcessInformation.hThread);
}
}
}
flag = SafeUserTokenHandle.DuplicateTokenEx(userToken, 0xf01ff, null, 2, 1, out hNewToken);
if (flag)
{
RuntimeHelpers.PrepareConstrainedRegions();
try
{
}
finally
{
flag = Microsoft.Win32.NativeMethods.CreateProcessAsUser(hNewToken, null, cmd, null, null, true, 0, new HandleRef(null, lpEnvironment), currentDir, startupinfo, lpProcessInformation);
if ((lpProcessInformation.hProcess != IntPtr.Zero) && (lpProcessInformation.hProcess != Microsoft.Win32.NativeMethods.INVALID_HANDLE_VALUE))
{
processHandle.InitialSetHandle(lpProcessInformation.hProcess);
}
if ((lpProcessInformation.hThread != IntPtr.Zero) && (lpProcessInformation.hThread != Microsoft.Win32.NativeMethods.INVALID_HANDLE_VALUE))
{
handle2.InitialSetHandle(lpProcessInformation.hThread);
}
}
}
}
}
finally
{
numRef = null;
}
}
finally
{
if ((!flag && (hNewToken != null)) && !hNewToken.IsInvalid)
{
hNewToken.Close();
hNewToken = null;
}
stream.Close();
stream2.Close();
}
Label_0325:
if (flag)
{
try
{
bool flag2;
ProcessWaitHandle handle4 = null;
try
{
handle4 = new ProcessWaitHandle(processHandle);
flag2 = handle4.WaitOne(0x927c0, false);
}
finally
{
if (handle4 != null)
{
handle4.Close();
}
}
if (!flag2)
{
throw new ExternalException(SR.GetString("ExecTimeout", new object[] { cmd }), 0x102);
}
int exitCode = 0x103;
if (!Microsoft.Win32.NativeMethods.GetExitCodeProcess(processHandle, out exitCode))
{
throw new ExternalException(SR.GetString("ExecCantGetRetCode", new object[] { cmd }), Marshal.GetLastWin32Error());
}
return(exitCode);
}
finally
{
processHandle.Close();
handle2.Close();
if ((hNewToken != null) && !hNewToken.IsInvalid)
{
hNewToken.Close();
}
}
}
int error = Marshal.GetLastWin32Error();
if (error == 8)
{
throw new OutOfMemoryException();
}
Win32Exception inner = new Win32Exception(error);
ExternalException exception2 = new ExternalException(SR.GetString("ExecCantExec", new object[] { cmd }), inner);
throw exception2;
}
private void MonitorThread()
{
ProcessWaitHandle procWaitHandle = null;
WaitHandle[] waitHandles;
try
{
unsafe
{
// Get pointers to shared memory objects.
ConsoleParams* consoleParams = (ConsoleParams*)_consoleParams.Get();
CONSOLE_SCREEN_BUFFER_INFO* consoleScreenInfo = (CONSOLE_SCREEN_BUFFER_INFO*)
_consoleScreenInfo.Get();
ConsoleBufferInfo* consoleBufferInfo = (ConsoleBufferInfo*)_consoleBufferInfo.Get();
// Keep waiting for new events until process has exitted or thread is aborted.
procWaitHandle = new ProcessWaitHandle(_procSafeWaitHandle);
waitHandles = new WaitHandle[] { procWaitHandle, _consoleBufferInfo.RequestEvent };
// Loop until console has exitted.
while (WaitHandle.WaitAny(waitHandles) > 0)
{
// Get current window and buffer size.
int columns = consoleScreenInfo->srWindow.Right - consoleScreenInfo->srWindow.Left + 1;
int rows = consoleScreenInfo->srWindow.Bottom - consoleScreenInfo->srWindow.Top + 1;
int bufferColumns = consoleScreenInfo->dwSize.X;
int bufferRows = consoleScreenInfo->dwSize.Y;
// Check if window size has changed.
if (consoleParams->Columns != columns || consoleParams->Rows != rows)
{
consoleParams->Columns = columns;
consoleParams->Rows = rows;
// Raise event, window has been resized.
if (ConsoleWindowResized != null) ConsoleWindowResized(this, new EventArgs());
}
// Check if buffer size has changed.
if ((consoleParams->BufferColumns != 0
&& consoleParams->BufferColumns != bufferColumns) ||
(consoleParams->BufferRows != 0 && consoleParams->BufferRows != bufferRows))
{
consoleParams->BufferColumns = bufferColumns;
consoleParams->BufferRows = bufferRows;
// Raise event, buffer has been resized.
if (ConsoleBufferResized != null) ConsoleBufferResized(this, new EventArgs());
}
if (consoleBufferInfo->NewDataFound || consoleBufferInfo->CursorPositionChanged)
{
// Raise event, console has sent new data.
if (ConsoleNewData != null) ConsoleNewData(this, new EventArgs());
// Check if new data was found.
if (consoleBufferInfo->NewDataFound)
{
// Raise event, buffer data has changed.
if (ConsoleBufferChanged != null) ConsoleBufferChanged(this, new EventArgs());
}
// Check if cursor posistion has changed.
if (consoleBufferInfo->CursorPositionChanged)
{
// Raise event, cursor position has changed.
if (ConsoleCursorPositionChanged != null) ConsoleCursorPositionChanged(this,
new EventArgs());
}
}
}
}
}
catch (ThreadAbortException)
{
}
finally
{
if (procWaitHandle != null) procWaitHandle.Close();
// Raise event.
if (ConsoleClosed != null) ConsoleClosed(this, new EventArgs());
}
}
