//  getvid.c

#include "oidtst.h"


VOID
_cdecl
main(
    int argc,
    char *argv[]
    )
{
    HANDLE Volume;
    IO_STATUS_BLOCK IoStatusBlock;
    NTSTATUS Status;
    OBJECT_ATTRIBUTES ObjAttr;
    ANSI_STRING AnsiName;
    UNICODE_STRING UnicodeName;
    char DriveNameBuffer[32];

	FILE_OBJECTID_BUFFER ObjectIdBuffer;

    //
    //  Get parameters 
    //

    if (argc < 2) {
        printf("This program finds the object id of a volume (ntfs only).\n\n");
        printf("usage: %s <drive letter>:\n", argv[0]);
        return;
    }

    strcpy( DriveNameBuffer, "\\DosDevices\\" );
    strcat( DriveNameBuffer, argv[1] );
    RtlInitAnsiString( &AnsiName, DriveNameBuffer );
    Status = RtlAnsiStringToUnicodeString( &UnicodeName, &AnsiName, TRUE );

    if (!NT_SUCCESS(Status)) {
    
        printf( "Error initalizing strings" );
        return;
    }

    RtlZeroMemory( &ObjAttr, sizeof(OBJECT_ATTRIBUTES) );
    ObjAttr.Length = sizeof(OBJECT_ATTRIBUTES);
    ObjAttr.ObjectName = &UnicodeName;
    ObjAttr.Attributes = OBJ_CASE_INSENSITIVE;
    
    Status = NtOpenFile( &Volume,
                         SYNCHRONIZE | FILE_READ_DATA | FILE_WRITE_DATA,
                         &ObjAttr,
                         &IoStatusBlock,
                         FILE_SHARE_READ | FILE_SHARE_WRITE,
                         FILE_SYNCHRONOUS_IO_ALERT );

    if (Volume == INVALID_HANDLE_VALUE) {
    
        printf( "Error opening file %s %x\n", argv[1], GetLastError() );
        return;
    }

    // RtlZeroBytes( &ObjectIdBuffer, sizeof( ObjectIdBuffer ) );

    Status = NtQueryVolumeInformationFile( Volume,
                                           &IoStatusBlock,
                                           &ObjectIdBuffer, 
                                           sizeof(ObjectIdBuffer),
                                           FileFsObjectIdInformation );

    if (Status == STATUS_SUCCESS) {

        printf( "\nVolume Object Id is: " );
        FsTestHexDump( (UCHAR *)&ObjectIdBuffer.ObjectId, 16 );
        
        printf( "\nExtended info: " );
        FsTestHexDump( (UCHAR *)&ObjectIdBuffer.ExtendedInfo, 48 );
        
    } else {
    
        FsTestDecipherStatus( Status );
    }        
    
    CloseHandle( Volume );
}