/// <summary>Starts the process using the supplied start info.</summary>
/// <param name="startInfo">The start info with which to start the process.</param>
private unsafe bool StartWithCreateProcess(ProcessStartInfo startInfo)
{
// See knowledge base article Q190351 for an explanation of the following code. Noteworthy tricky points:
// * The handles are duplicated as non-inheritable before they are passed to CreateProcess so
// that the child process can not close them
// * CreateProcess allows you to redirect all or none of the standard IO handles, so we use
// GetStdHandle for the handles that are not being redirected
StringBuilder commandLine = BuildCommandLine(startInfo.FileName, StartInfo.Arguments);
Process.AppendArguments(commandLine, StartInfo.ArgumentList);
Interop.Kernel32.STARTUPINFO startupInfo = new Interop.Kernel32.STARTUPINFO();
Interop.Kernel32.PROCESS_INFORMATION processInfo = new Interop.Kernel32.PROCESS_INFORMATION();
Interop.Kernel32.SECURITY_ATTRIBUTES unused_SecAttrs = new Interop.Kernel32.SECURITY_ATTRIBUTES();
SafeProcessHandle procSH = new SafeProcessHandle();
SafeThreadHandle threadSH = new SafeThreadHandle();
// handles used in parent process
SafeFileHandle parentInputPipeHandle = null;
SafeFileHandle childInputPipeHandle = null;
SafeFileHandle parentOutputPipeHandle = null;
SafeFileHandle childOutputPipeHandle = null;
SafeFileHandle parentErrorPipeHandle = null;
SafeFileHandle childErrorPipeHandle = null;
lock (s_createProcessLock)
{
try
{
startupInfo.cb = sizeof(Interop.Kernel32.STARTUPINFO);
// set up the streams
if (startInfo.RedirectStandardInput || startInfo.RedirectStandardOutput || startInfo.RedirectStandardError)
{
if (startInfo.RedirectStandardInput)
{
CreatePipe(out parentInputPipeHandle, out childInputPipeHandle, true);
}
else
{
childInputPipeHandle = new SafeFileHandle(Interop.Kernel32.GetStdHandle(Interop.Kernel32.HandleTypes.STD_INPUT_HANDLE), false);
}
if (startInfo.RedirectStandardOutput)
{
CreatePipe(out parentOutputPipeHandle, out childOutputPipeHandle, false);
}
else
{
childOutputPipeHandle = new SafeFileHandle(Interop.Kernel32.GetStdHandle(Interop.Kernel32.HandleTypes.STD_OUTPUT_HANDLE), false);
}
if (startInfo.RedirectStandardError)
{
CreatePipe(out parentErrorPipeHandle, out childErrorPipeHandle, false);
}
else
{
childErrorPipeHandle = new SafeFileHandle(Interop.Kernel32.GetStdHandle(Interop.Kernel32.HandleTypes.STD_ERROR_HANDLE), false);
}
startupInfo.hStdInput = childInputPipeHandle.DangerousGetHandle();
startupInfo.hStdOutput = childOutputPipeHandle.DangerousGetHandle();
startupInfo.hStdError = childErrorPipeHandle.DangerousGetHandle();
startupInfo.dwFlags = Interop.Advapi32.StartupInfoOptions.STARTF_USESTDHANDLES;
}
// set up the creation flags parameter
int creationFlags = 0;
if (startInfo.CreateNoWindow)
{
creationFlags |= Interop.Advapi32.StartupInfoOptions.CREATE_NO_WINDOW;
}
// set up the environment block parameter
string environmentBlock = null;
if (startInfo._environmentVariables != null)
{
creationFlags |= Interop.Advapi32.StartupInfoOptions.CREATE_UNICODE_ENVIRONMENT;
environmentBlock = GetEnvironmentVariablesBlock(startInfo._environmentVariables);
}
string workingDirectory = startInfo.WorkingDirectory;
if (workingDirectory == string.Empty)
{
workingDirectory = Directory.GetCurrentDirectory();
}
bool retVal;
int errorCode = 0;
if (startInfo.UserName.Length != 0)
{
if (startInfo.Password != null && startInfo.PasswordInClearText != null)
{
throw new ArgumentException(SR.CantSetDuplicatePassword);
}
Interop.Advapi32.LogonFlags logonFlags = (Interop.Advapi32.LogonFlags) 0;
if (startInfo.LoadUserProfile)
{
logonFlags = Interop.Advapi32.LogonFlags.LOGON_WITH_PROFILE;
}
fixed(char *passwordInClearTextPtr = startInfo.PasswordInClearText ?? string.Empty)
fixed(char *environmentBlockPtr = environmentBlock)
{
IntPtr passwordPtr = (startInfo.Password != null) ?
Marshal.SecureStringToGlobalAllocUnicode(startInfo.Password) : IntPtr.Zero;
try
{
retVal = Interop.Advapi32.CreateProcessWithLogonW(
startInfo.UserName,
startInfo.Domain,
(passwordPtr != IntPtr.Zero) ? passwordPtr : (IntPtr)passwordInClearTextPtr,
logonFlags,
null, // we don't need this since all the info is in commandLine
commandLine,
creationFlags,
(IntPtr)environmentBlockPtr,
workingDirectory,
ref startupInfo, // pointer to STARTUPINFO
ref processInfo // pointer to PROCESS_INFORMATION
);
if (!retVal)
{
errorCode = Marshal.GetLastWin32Error();
}
}
finally
{
if (passwordPtr != IntPtr.Zero)
{
Marshal.ZeroFreeGlobalAllocUnicode(passwordPtr);
}
}
}
}
else
{
fixed(char *environmentBlockPtr = environmentBlock)
{
retVal = Interop.Kernel32.CreateProcess(
null, // we don't need this since all the info is in commandLine
commandLine, // pointer to the command line string
ref unused_SecAttrs, // address to process security attributes, we don't need to inherit the handle
ref unused_SecAttrs, // address to thread security attributes.
true, // handle inheritance flag
creationFlags, // creation flags
(IntPtr)environmentBlockPtr, // pointer to new environment block
workingDirectory, // pointer to current directory name
ref startupInfo, // pointer to STARTUPINFO
ref processInfo // pointer to PROCESS_INFORMATION
);
if (!retVal)
{
errorCode = Marshal.GetLastWin32Error();
}
}
}
if (processInfo.hProcess != IntPtr.Zero && processInfo.hProcess != new IntPtr(-1))
{
procSH.InitialSetHandle(processInfo.hProcess);
}
if (processInfo.hThread != IntPtr.Zero && processInfo.hThread != new IntPtr(-1))
{
threadSH.InitialSetHandle(processInfo.hThread);
}
if (!retVal)
{
if (errorCode == Interop.Errors.ERROR_BAD_EXE_FORMAT || errorCode == Interop.Errors.ERROR_EXE_MACHINE_TYPE_MISMATCH)
{
throw new Win32Exception(errorCode, SR.InvalidApplication);
}
throw new Win32Exception(errorCode);
}
}
finally
{
childInputPipeHandle?.Dispose();
childOutputPipeHandle?.Dispose();
childErrorPipeHandle?.Dispose();
threadSH?.Dispose();
}
}
if (startInfo.RedirectStandardInput)
{
Encoding enc = startInfo.StandardInputEncoding ?? GetEncoding((int)Interop.Kernel32.GetConsoleCP());
_standardInput = new StreamWriter(new FileStream(parentInputPipeHandle, FileAccess.Write, 4096, false), enc, 4096);
_standardInput.AutoFlush = true;
}
if (startInfo.RedirectStandardOutput)
{
Encoding enc = startInfo.StandardOutputEncoding ?? GetEncoding((int)Interop.Kernel32.GetConsoleOutputCP());
_standardOutput = new StreamReader(new FileStream(parentOutputPipeHandle, FileAccess.Read, 4096, false), enc, true, 4096);
}
if (startInfo.RedirectStandardError)
{
Encoding enc = startInfo.StandardErrorEncoding ?? GetEncoding((int)Interop.Kernel32.GetConsoleOutputCP());
_standardError = new StreamReader(new FileStream(parentErrorPipeHandle, FileAccess.Read, 4096, false), enc, true, 4096);
}
if (procSH.IsInvalid)
{
return(false);
}
SetProcessHandle(procSH);
SetProcessId((int)processInfo.dwProcessId);
return(true);
}
private unsafe bool StartWithShellExecuteEx(ProcessStartInfo startInfo)
{
if (!string.IsNullOrEmpty(startInfo.UserName) || startInfo.Password != null)
{
throw new InvalidOperationException(SR.CantStartAsUser);
}
if (startInfo.RedirectStandardInput || startInfo.RedirectStandardOutput || startInfo.RedirectStandardError)
{
throw new InvalidOperationException(SR.CantRedirectStreams);
}
if (startInfo.StandardInputEncoding != null)
{
throw new InvalidOperationException(SR.StandardInputEncodingNotAllowed);
}
if (startInfo.StandardErrorEncoding != null)
{
throw new InvalidOperationException(SR.StandardErrorEncodingNotAllowed);
}
if (startInfo.StandardOutputEncoding != null)
{
throw new InvalidOperationException(SR.StandardOutputEncodingNotAllowed);
}
if (startInfo._environmentVariables != null)
{
throw new InvalidOperationException(SR.CantUseEnvVars);
}
string arguments;
if (startInfo.ArgumentList.Count > 0)
{
StringBuilder sb = new StringBuilder();
Process.AppendArguments(sb, startInfo.ArgumentList);
arguments = sb.ToString();
}
else
{
arguments = startInfo.Arguments;
}
fixed(char *fileName = startInfo.FileName.Length > 0?startInfo.FileName : null)
fixed(char *verb = startInfo.Verb.Length > 0 ? startInfo.Verb : null)
fixed(char *parameters = arguments.Length > 0 ? arguments : null)
fixed(char *directory = startInfo.WorkingDirectory.Length > 0 ? startInfo.WorkingDirectory : null)
{
Interop.Shell32.SHELLEXECUTEINFO shellExecuteInfo = new Interop.Shell32.SHELLEXECUTEINFO()
{
cbSize = (uint)sizeof(Interop.Shell32.SHELLEXECUTEINFO),
lpFile = fileName,
lpVerb = verb,
lpParameters = parameters,
lpDirectory = directory,
fMask = Interop.Shell32.SEE_MASK_NOCLOSEPROCESS | Interop.Shell32.SEE_MASK_FLAG_DDEWAIT
};
if (startInfo.ErrorDialog)
{
shellExecuteInfo.hwnd = startInfo.ErrorDialogParentHandle;
}
else
{
shellExecuteInfo.fMask |= Interop.Shell32.SEE_MASK_FLAG_NO_UI;
}
switch (startInfo.WindowStyle)
{
case ProcessWindowStyle.Hidden:
shellExecuteInfo.nShow = Interop.Shell32.SW_HIDE;
break;
case ProcessWindowStyle.Minimized:
shellExecuteInfo.nShow = Interop.Shell32.SW_SHOWMINIMIZED;
break;
case ProcessWindowStyle.Maximized:
shellExecuteInfo.nShow = Interop.Shell32.SW_SHOWMAXIMIZED;
break;
default:
shellExecuteInfo.nShow = Interop.Shell32.SW_SHOWNORMAL;
break;
}
ShellExecuteHelper executeHelper = new ShellExecuteHelper(&shellExecuteInfo);
if (!executeHelper.ShellExecuteOnSTAThread())
{
int error = executeHelper.ErrorCode;
if (error == 0)
{
error = GetShellError(shellExecuteInfo.hInstApp);
}
switch (error)
{
case Interop.Errors.ERROR_BAD_EXE_FORMAT:
case Interop.Errors.ERROR_EXE_MACHINE_TYPE_MISMATCH:
throw new Win32Exception(error, SR.InvalidApplication);
case Interop.Errors.ERROR_CALL_NOT_IMPLEMENTED:
// This happens on Windows Nano
throw new PlatformNotSupportedException(SR.UseShellExecuteNotSupported);
default:
throw new Win32Exception(error);
}
}
if (shellExecuteInfo.hProcess != IntPtr.Zero)
{
SetProcessHandle(new SafeProcessHandle(shellExecuteInfo.hProcess));
return(true);
}
}
return(false);
}
