sfilter 中如何判断当前的IRP是否来自网络?

王朝other·作者佚名  2006-01-09
窄屏简体版  字體: |||超大  

再仍一块砖头,sfilter 中如何判断当前的IRP是否来自网络?:

如何从IrpStackLocation中判断来自网络的文件访问?

//---------------------------------------------------

NTSTATUS status;

PACCESS_TOKEN pToken = NULL;

PTOKEN_SOURCE pTokenSrc = NULL ;

PSECURITY_SUBJECT_CONTEXT secSubCtx;

secSubCtx = &(IrpSp->Parameters.Create.SecurityContext->AccessState->SubjectSecurityContext);

if (secSubCtx->ClientToken != NULL || secSubCtx->PrimaryToken != NULL)

{

pToken = SeQuerySubjectContextToken(secSubCtx);

}

if (pToken == NULL)

{

//KdPrint(("SeQuerySubjectContextToken Errorn"));

return 0

}

//

// Get TokenSource Name If SourceName is "NtLmSsp" it was logged-in via Lanmanager,

// "User32" represents localy logged-in users.

//

__try

{

status = SeQueryInformationToken(pToken,TokenSource,&pTokenSrc);

if (NT_SUCCESS(status))

{

pTokenSrc->SourceName[TOKEN_SOURCE_LENGTH-1] = 0x00;

KdPrint(("Token Name :%s Len:%dn",pTokenSrc->SourceName,strlen(pTokenSrc->SourceName)));

if (_stricmp(pTokenSrc->SourceName,"NtLmSsp") == 0 )

{

KdPrint(("NetWork Access Token Findn"));

return 123

}

}

else

{

KdPrint(("SeQueryInformationToken Error:0x%xn",status));

}

}

__finally

{

ExFreePool(pTokenSrc);

}

return 0

 
 
 
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