STATIC
PAGEABLE
VOID
messagetable_CountingCallback(
_In_ PCMESSAGE_TABLE_ENTRY ptEntry,
_In_opt_ PCMESSAGE_TABLE_ENTRY ptPreviousEntry,
_In_ PVOID pvContext,
_Out_ PBOOLEAN pbContinueEnumeration
)
{
NTSTATUS eStatus = STATUS_UNSUCCESSFUL;
PCOUNTING_CALLBACK_CONTEXT ptContext = (PCOUNTING_CALLBACK_CONTEXT)pvContext;
PAGED_CODE();
#ifndef DBG
UNREFERENCED_PARAMETER(pbContinueEnumeration);
#endif // !DBG
ASSERT(NULL != ptEntry);
ASSERT(NULL != pvContext);
ASSERT(NULL != pbContinueEnumeration);
ASSERT(*pbContinueEnumeration);
if ((NULL == ptPreviousEntry) ||
(1 != ptEntry->nEntryId - ptPreviousEntry->nEntryId))
{
// This is either the first time we entered the callback,
// or the current ID begins a new block.
eStatus = RtlULongAdd(ptContext->nBlocks,
1,
&(ptContext->nBlocks));
ASSERT(NT_SUCCESS(eStatus));
}
// Add the size for the current string.
eStatus = RtlSIZETAdd(ptContext->cbTotalStrings,
messagetable_SizeofSerializedEntry(ptEntry),
&(ptContext->cbTotalStrings));
ASSERT(NT_SUCCESS(eStatus));
}
NTSTATUS
DsppLoadFontFile (
_In_ PWCHAR FontFileName
)
{
PBL_DEVICE_DESCRIPTOR FontDevice;
NTSTATUS Status;
SIZE_T NameLength, DirectoryLength, TotalLength;
PWCHAR FontPath, FontDirectory;
BL_LIBRARY_PARAMETERS LibraryParameters;
BOOLEAN CustomDirectory, CustomDevice;
/* Initialize locals */
CustomDirectory = TRUE;
CustomDevice = TRUE;
FontDevice = NULL;
FontPath = NULL;
FontDirectory = NULL;
/* Check if a custom font path should be used */
Status = BlGetBootOptionString(BlpApplicationEntry.BcdData,
BcdLibraryString_FontPath,
&FontDirectory);
if (!NT_SUCCESS(Status))
{
/* Nope, use the one configured by the library */
CustomDirectory = FALSE;
RtlCopyMemory(&LibraryParameters,
&BlpLibraryParameters,
sizeof(LibraryParameters)),
FontDirectory = LibraryParameters.FontBaseDirectory;
}
/* Do we still not have a font directory? */
if (!FontDirectory)
{
/* Use the boot device and boot directory */
FontDevice = BlpBootDevice;
FontDirectory = L"\\EFI\\Microsoft\\Boot\\Fonts";
CustomDevice = FALSE;
}
else
{
/* Otherwise, if we have a font directory, what device is the app on? */
Status = BlGetBootOptionDevice(BlpApplicationEntry.BcdData,
BcdLibraryDevice_ApplicationDevice,
&FontDevice,
NULL);
if (!NT_SUCCESS(Status))
{
/* If we don't know the device, we can't open the path */
goto Quickie;
}
}
/* Figure out the length of the file name, and of the directory */
NameLength = wcslen(FontFileName);
DirectoryLength = wcslen(FontDirectory);
/* Safely add them up*/
Status = RtlSIZETAdd(NameLength, DirectoryLength, &TotalLength);
if (!NT_SUCCESS(Status))
{
goto Quickie;
}
/* Convert to bytes */
Status = RtlSIZETMult(TotalLength, sizeof(WCHAR), &TotalLength);
if (!NT_SUCCESS(Status))
{
goto Quickie;
}
/* Add a terminating NUL */
Status = RtlSIZETAdd(TotalLength, sizeof(UNICODE_NULL), &TotalLength);
if (!NT_SUCCESS(Status))
{
goto Quickie;
}
/* Allocate the final buffer for it */
FontPath = BlMmAllocateHeap(TotalLength);
if (!FontPath)
{
Status = STATUS_NO_MEMORY;
goto Quickie;
}
/* Concatenate the directory with the file name */
wcscpy(FontPath, FontDirectory);
wcscat(FontPath, FontFileName);
/* Try to load this font */
Status = BfLoadFontFile(FontDevice, FontPath);
Quickie:
/* Check if we had a custom font device allocated and free it */
if ((CustomDevice) && (FontDevice))
{
BlMmFreeHeap(FontDevice);
}
/* Check if we had a custom font directory allocated and free it */
if ((FontDirectory) && (CustomDirectory))
{
BlMmFreeHeap(FontDirectory);
}
/* Check if we had allocated a font path and free it */
if (FontPath)
{
BlMmFreeHeap(FontPath);
}
/* Return back */
return Status;
}