Joh*_*opp 3 c# windows security named-pipes
我使用System.IO.Pipes. 它运行良好,直到我不得不在管理员模式下运行该程序。提升后,客户端无法再连接(客户端未提升运行)。如果我以管理员身份运行客户端,它会正常连接,因此看起来像是权限问题。我一直在研究如何解决这个问题,但没有成功(我发现处理 Windows 安全问题令人难以置信)。我的目标是允许任何客户端——无论是否提升——能够连接到管道。
我改变的第一件事是打开具有访问权限的管道:
pipeServer = new NamedPipeServerStream(pipeName,
PipeDirection.InOut,
1,
PipeTransmissionMode.Message,
PipeOptions.Asynchronous,
0x4000,
0x400,
null,
HandleInheritability.Inheritable,
PipeAccessRights.ChangePermissions | PipeAccessRights.AccessSystemSecurity);
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然后我把这段代码拼凑在一起。一切正常,直到SetEntriesInAcl调用失败:
错误:0x534
“未完成帐户名称和安全 ID 之间的映射。”
IntPtr ownerSid = IntPtr.Zero;
IntPtr groupSid = IntPtr.Zero;
IntPtr dacl = IntPtr.Zero, newDacl = IntPtr.Zero;
IntPtr sacl = IntPtr.Zero;
IntPtr securityDescriptor = IntPtr.Zero;
if (SUCCEEDED(GetSecurityInfo(pipeServer.SafePipeHandle.handle.DangerousGetHandle(),
SE_OBJECT_TYPE.SE_KERNEL_OBJECT,
SECURITY_INFORMATION.DACL_SECURITY_INFORMATION,
out ownerSid,
out groupSid,
out dacl,
out sacl,
out securityDescriptor))) {
EXPLICIT_ACCESS ea = new EXPLICIT_ACCESS();
BuildExplicitAccessWithName(ref ea, "Everyone", GENERIC_ALL, ACCESS_MODE.GRANT_ACCESS, NO_INHERITANCE);
// Next line fails
if (SUCCEEDED(SetEntriesInAcl(1, ref ea, dacl, out newDacl))) {
uint retval = SetSecurityInfo(handle,
SE_OBJECT_TYPE.SE_KERNEL_OBJECT,
SECURITY_INFORMATION.DACL_SECURITY_INFORMATION,
IntPtr.Zero,
IntPtr.Zero,
newDacl,
IntPtr.Zero);
// Haven't reached this point yet
}
}
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该BuildExplicitAccessWithName函数没有返回值,但似乎成功了。这是调用后的样子:

我很感激这里的任何帮助。
(所有 Win32 函数和数据类型都可以在 pinvoke.net 上找到。另外,我使用的是 Windows 10。)
我最终不必使用任何本机调用。该PipeSecurity班工作。诀窍是我必须将它传递给构造函数:
// Creates a PipeSecurity that allows users read/write access
PipeSecurity CreateSystemIOPipeSecurity()
{
PipeSecurity pipeSecurity = new PipeSecurity();
var id = new SecurityIdentifier(WellKnownSidType.AuthenticatedUserSid, null);
// Allow Everyone read and write access to the pipe.
pipeSecurity.SetAccessRule(new PipeAccessRule(id, PipeAccessRights.ReadWrite, AccessControlType.Allow));
return pipeSecurity;
}
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创建管道时使用该函数:
PipeSecurity pipeSecurity = CreateSystemIOPipeSecurity();
pipeServer = new NamedPipeServerStream(pipeName,
PipeDirection.InOut,
1,
PipeTransmissionMode.Message,
PipeOptions.Asynchronous,
0x4000,
0x400,
pipeSecurity,
HandleInheritability.Inheritable);
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