在服务中创建用户进程的方法（C#版）

Windows NT/2000提供了一个函数CreateProcessAsUser，它的功能类似于CreateProcess函数，所不同的是CreateProcessAsUser创建的新进程能以用户（任何用户）的安全上下文方式运行。

1
//
PlatformInvoke Stuff

2
[StructLayout(LayoutKind.Sequential)]

3

struct
STARTUPINFO

4
{

5

public
Int32 cb;

6
[MarshalAs(UnmanagedType.LPTStr)]

7

public
String lpReserved;

8
[MarshalAs(UnmanagedType.LPTStr)]

9

public
String lpDesktop;

10
[MarshalAs(UnmanagedType.LPTStr)]

11

public
String lpTitle;

12

public
UInt32 dwX;

13

public
UInt32 dwY;

14

public
UInt32 dwXSize;

15

public
UInt32 dwYSize;

16

public
UInt32 dwXCountChars;

17

public
UInt32 dwYCountChars;

18

public
UInt32 dwFillAttribute;

19

public
UInt32 dwFlags;

20

public
Int16 wShowWindow;

21

public
Int16 cbReserved2;

22

public
IntPtr lpReserved2;

23

public
HandleRef hStdInput;

24

public
HandleRef hStdOutput;

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public
HandleRef hStdError;

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}

27

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const

int
NORMAL_PRIORITY_CLASS
=

0x00000020
;

29

30

struct
PROCESS_INFORMATION

31
{

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public
HandleRef hProcess;

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public
HandleRef hThread;

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public
UInt32 dwProcessId;

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public
UInt32 dwThreadId;

36
}

37

38

struct
SECURITY_ATTRIBUTES

39
{

40

public
UInt32 nLength;

41

public
IntPtr lpSecurityDescriptor;

42

public
Boolean bInheritHandle;

43
}

44

45
[DllImport(
"
advapi32.dll
"
, CharSet
=
CharSet.Unicode)]

46

static

extern
Boolean CreateProcessAsUser(

47
IntPtr hToken,

48
String lpApplicationName,

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String lpCommandLine,

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IntPtr lpProcessAttributes,

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IntPtr lpThreadAttributes,

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Boolean bInheritHandles,

53
UInt32 dwCreationFlags,

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IntPtr lpEnvironment,

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String lpCurrentDirectory,

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ref
STARTUPINFO lpStartupInfo,

57

out
PROCESS_INFORMATION lpProcessInformation);

58

59
[DllImport(
"
advapi32.dll
"
, CharSet
=
CharSet.Unicode)]

60

static

extern
Boolean LogonUser(

61
String lpszUsername,

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String lpszDomain,

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String lpszPassword,

64
Int32 dwLogonType,

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Int32 dwLogonProvider,

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ref
IntPtr phToken

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);

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const

int
LOGON32_LOGON_INTERACTIVE
=

2
;

69

70

public

void
Execute(
string
File)

71
{

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try

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{

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//
unsafe

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{

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PROCESS_INFORMATION pi
=

new
PROCESS_INFORMATION();

77

78
STARTUPINFO si
=

new
STARTUPINFO();

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si.cb
=
Marshal.SizeOf(si);

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si.lpDesktop
=

"
winsta0\\default
"
;

81

82
IntPtr hToken
=

new
IntPtr(
0
);

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if
(LogonUser(
"
auser
"
,
"
mydomain
"
,
"
Passw0rd!
"
,

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LOGON32_LOGON_INTERACTIVE,
0
,
ref
hToken))

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{

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Boolean bResult
=
CreateProcessAsUser(

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hToken,

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File,
//
file to execute

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null
,
//
command line

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IntPtr.Zero,
//
pointer to process SECURITY_ATTRIBUTES

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IntPtr.Zero,
//
pointer to thread SECURITY_ATTRIBUTES

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false
,
//
handles are not inheritable

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0
,
//
creation flags

94
IntPtr.Zero,
//
pointer to new environment block

95

null
,
//
name of current directory

96

ref
si,
//
pointer to STARTUPINFO structure

97

out
pi
//
receives information about new process

98
);

99

100

if
(bResult)

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{

102
}

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}

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}

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}

106

catch
(Exception e)

107
{

108
}

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}