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rtlfuncs.c
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rtlfuncs.c
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#include "precomp.h"
HANDLE hEvent;
WCHAR DisplayBuffer[1024];
USHORT LinePos = 0;
WCHAR PutChar[2] = L" ";
UNICODE_STRING CharString = {2, 2, PutChar};
NTSTATUS
__cdecl
RtlCliDisplayString(IN PCH Message, ...)
{
va_list MessageList;
PCHAR MessageBuffer;
UNICODE_STRING MessageString;
NTSTATUS Status;
//
// Allocate Memory for the String Buffer
//
MessageBuffer = RtlAllocateHeap(RtlGetProcessHeap(), 0, 512);
//
// First, combine the message
//
va_start(MessageList, Message);
_vsnprintf(MessageBuffer, 512, Message, MessageList);
va_end(MessageList);
//
// Now make it a unicode string
//
RtlCreateUnicodeStringFromAsciiz(&MessageString, MessageBuffer);
//
// Display it on screen
//
Status = RtlCliPrintString(&MessageString);
//
// Free Memory
//
RtlFreeHeap(RtlGetProcessHeap(), 0, MessageBuffer);
RtlFreeUnicodeString(&MessageString);
//
// Return to the caller
//
return Status;
}
NTSTATUS
RtlCliPrintString(IN PUNICODE_STRING Message)
{
NTSTATUS Status;
ULONG i;
//
// Loop every character
//
for (i = 0; i < (Message->Length / sizeof(WCHAR)); i++)
{
//
// Print the character
//
Status = RtlCliPutChar(Message->Buffer[i]);
}
//
// Return status
//
return Status;
}
NTSTATUS
RtlCliPutChar(IN WCHAR Char)
{
//
// Initialize the string
//
CharString.Buffer[0] = Char;
//
// Check for overflow, or simply update.
//
#if 0
if (LinePos++ > 80)
{
//
// We'll be on a new line. Do the math and see how far.
//
MessageLength = NewPos - 80;
LinePos = sizeof(WCHAR);
}
#endif
//
// Make sure that this isn't backspace
//
if (Char != '\r')
{
//
// Check if it's a new line
//
if (Char == '\n')
{
//
// Reset the display buffer
//
LinePos = 0;
DisplayBuffer[LinePos] = UNICODE_NULL;
}
else
{
//
// Add the character in our buffer
//
DisplayBuffer[LinePos] = Char;
LinePos++;
}
}
//
// Print the character
//
return NtDisplayString(&CharString);
}
NTSTATUS
RtlCliOpenInputDevice(OUT PHANDLE Handle,
IN CON_DEVICE_TYPE Type)
{
UNICODE_STRING Driver;
OBJECT_ATTRIBUTES ObjectAttributes;
IO_STATUS_BLOCK Iosb;
HANDLE hDriver;
NTSTATUS Status;
//
// Chose the driver to use
// FIXME: Support MouseType later
// FIXME: Don't hardcode keyboard path
//
if (Type == KeyboardType)
{
RtlInitUnicodeString(&Driver, L"\\Device\\KeyboardClass0");
}
//
// Initialize the object attributes
//
InitializeObjectAttributes(&ObjectAttributes,
&Driver,
OBJ_CASE_INSENSITIVE,
NULL,
NULL);
//
// Open a handle to it
//
Status = NtCreateFile(&hDriver,
SYNCHRONIZE | GENERIC_READ | FILE_READ_ATTRIBUTES,
&ObjectAttributes,
&Iosb,
NULL,
FILE_ATTRIBUTE_NORMAL,
0,
FILE_OPEN,
FILE_DIRECTORY_FILE,
NULL,
0);
//
// Now create an event that will be used to wait on the device
//
InitializeObjectAttributes(&ObjectAttributes, NULL, 0, NULL, NULL);
Status = NtCreateEvent(&hEvent, EVENT_ALL_ACCESS, &ObjectAttributes, 1, 0);
//
// Return the handle
//
*Handle = hDriver;
return Status;
}
NTSTATUS
RtlCliShutdown(VOID)
{
BOOLEAN Old;
//
// Get the shutdown privilege and shutdown the system
//
RtlAdjustPrivilege(SE_SHUTDOWN_PRIVILEGE, TRUE, FALSE, &Old);
return ZwShutdownSystem(ShutdownNoReboot);
}
NTSTATUS
RtlCliReboot(VOID)
{
BOOLEAN Old;
//
// Get the shutdown privilege and shutdown the system
//
RtlAdjustPrivilege(SE_SHUTDOWN_PRIVILEGE, TRUE, FALSE, &Old);
return ZwShutdownSystem(ShutdownReboot);
}