Revert tree-restructure attempt: r66583, r66582, r66581, r66578, sauf ntdll changes...

[reactos.git] / reactos / win32ss / user / ntuser / misc / file.c

diff --git a/reactos/win32ss/user/ntuser/misc/file.c b/reactos/win32ss/user/ntuser/misc/file.c
new file mode 100644 (file)
index 0000000..8b4d0e2
--- /dev/null
+++ b/reactos/win32ss/user/ntuser/misc/file.c
@@ -0,0 +1,249 @@
+/*
+ * COPYRIGHT:        GPL, see COPYING in the top level directory
+ * PROJECT:          ReactOS win32 kernel mode subsystem server
+ * PURPOSE:          File access support routines
+ * FILE:             subsystem/win32/win32k/misc/registry.c
+ * PROGRAMER:        Timo Kreuzer (timo.kreuzer@reactos.org)
+ */
+
+#include <win32k.h>
+
+#define NDEBUG
+#include <debug.h>
+
+BOOL
+NTAPI
+W32kDosPathNameToNtPathName(
+    IN PCWSTR pwszDosPathName,
+    OUT PUNICODE_STRING pustrNtPathName)
+{
+    NTSTATUS Status;
+
+    /* Prepend "\??\" */
+    pustrNtPathName->Length = 0;
+    Status = RtlAppendUnicodeToString(pustrNtPathName, L"\\??\\");
+    if (!NT_SUCCESS(Status))
+    {
+        return FALSE;
+    }
+
+    /* Append the dos name */
+    Status = RtlAppendUnicodeToString(pustrNtPathName, pwszDosPathName);
+    if (!NT_SUCCESS(Status))
+    {
+        return FALSE;
+    }
+
+    return TRUE;
+}
+
+
+HANDLE
+NTAPI
+W32kOpenFile(PCWSTR pwszFileName, DWORD dwDesiredAccess)
+{
+    UNICODE_STRING ustrFile;
+    OBJECT_ATTRIBUTES ObjectAttributes;
+    IO_STATUS_BLOCK IoStatusBlock;
+    HANDLE hFile = INVALID_HANDLE_VALUE;
+    NTSTATUS Status;
+
+    DPRINT("W32kOpenFile(%S)\n", pwszFileName);
+
+    RtlInitUnicodeString(&ustrFile, pwszFileName);
+
+    InitializeObjectAttributes(&ObjectAttributes, &ustrFile, 0, NULL, NULL);
+
+    Status = ZwCreateFile(&hFile,
+                          dwDesiredAccess,
+                          &ObjectAttributes,
+                          &IoStatusBlock,
+                          NULL,
+                          FILE_ATTRIBUTE_NORMAL,
+                          0,
+                          FILE_OPEN,
+                          FILE_NON_DIRECTORY_FILE,
+                          NULL,
+                          0);
+    if (!NT_SUCCESS(Status))
+    {
+        SetLastNtError(Status);
+        hFile = NULL;
+    }
+
+    DPRINT("Leaving W32kOpenFile, Status=0x%lx, hFile=0x%p\n", Status, hFile);
+    return hFile;
+}
+
+HANDLE
+NTAPI
+W32kCreateFileSection(HANDLE hFile,
+                      ULONG flAllocation,
+                      DWORD flPageProtection,
+                      ULONGLONG ullMaxSize)
+{
+    NTSTATUS Status;
+    HANDLE hSection = NULL;
+    ACCESS_MASK amDesiredAccess;
+
+    /* Set access mask */
+    amDesiredAccess = STANDARD_RIGHTS_REQUIRED | SECTION_QUERY | SECTION_MAP_READ;
+
+    /* Check if write access is requested */
+    if (flPageProtection == PAGE_READWRITE)
+    {
+        /* Add it to access mask */
+        amDesiredAccess |= SECTION_MAP_WRITE;
+    }
+
+    /* Now create the actual section */
+    Status = ZwCreateSection(&hSection,
+                             amDesiredAccess,
+                             NULL,
+                             NULL,
+                             flPageProtection,
+                             flAllocation,
+                             hFile);
+    if (!NT_SUCCESS(Status))
+    {
+        SetLastNtError(Status);
+    }
+
+    DPRINT("Leaving W32kCreateFileSection, Status=0x%lx, hSection=0x%p\n", Status, hSection);
+
+    /* Return section handle */
+    return hSection;
+}
+
+PVOID
+NTAPI
+W32kMapViewOfSection(
+    HANDLE hSection,
+    DWORD dwPageProtect,
+    ULONG_PTR ulSectionOffset)
+{
+    NTSTATUS Status;
+    LARGE_INTEGER liSectionOffset;
+    ULONG_PTR ulViewSize;
+    PVOID pvBase = 0;
+
+    liSectionOffset.QuadPart = ulViewSize = ulSectionOffset;
+    Status = ZwMapViewOfSection(hSection,
+                                NtCurrentProcess(),
+                                &pvBase,
+                                0,
+                                0,
+                                &liSectionOffset,
+                                &ulViewSize,
+                                ViewShare,
+                                0,
+                                dwPageProtect);
+    if (!NT_SUCCESS(Status))
+    {
+        SetLastNtError(Status);
+    }
+
+    DPRINT("Leaving W32kMapViewOfSection, Status=0x%lx, pvBase=0x%p\n", Status, pvBase);
+
+    return pvBase;
+}
+
+HBITMAP
+NTAPI
+UserLoadImage(PCWSTR pwszName)
+{
+    NTSTATUS Status = STATUS_SUCCESS;
+    HANDLE hFile, hSection;
+    BITMAPFILEHEADER *pbmfh;
+    LPBITMAPINFO pbmi;
+    PVOID pvBits;
+    HBITMAP hbmp = 0;
+
+    DPRINT("Enter UserLoadImage(%ls)\n", pwszName);
+
+    /* Open the file */
+    hFile = W32kOpenFile(pwszName, FILE_READ_DATA);
+    if (!hFile)
+    {
+        return NULL;
+    }
+
+    /* Create a section */
+    hSection = W32kCreateFileSection(hFile, SEC_COMMIT, PAGE_READONLY, 0);
+    ZwClose(hFile);
+    if (!hSection)
+    {
+        return NULL;
+    }
+
+    /* Map the section */
+    pbmfh = W32kMapViewOfSection(hSection, PAGE_READONLY, 0);
+    ZwClose(hSection);
+    if (!pbmfh)
+    {
+        return NULL;
+    }
+
+    /* Get a pointer to the BITMAPINFO */
+    pbmi = (LPBITMAPINFO)(pbmfh + 1);
+
+       _SEH2_TRY
+       {
+               ProbeForRead(&pbmfh->bfSize, sizeof(DWORD), 1);
+               ProbeForRead(pbmfh, pbmfh->bfSize, 1);
+       }
+       _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
+       {
+               Status = _SEH2_GetExceptionCode();
+       }
+       _SEH2_END
+
+       if(!NT_SUCCESS(Status))
+       {
+               DPRINT1("Bad File?\n");
+               goto leave;
+       }
+
+    if (pbmfh->bfType == 0x4D42 /* 'BM' */)
+    {
+               /* Could be BITMAPCOREINFO */
+               BITMAPINFO* pConvertedInfo;
+               HDC hdc;
+
+               pvBits = (PVOID)((PCHAR)pbmfh + pbmfh->bfOffBits);
+
+               pConvertedInfo = DIB_ConvertBitmapInfo(pbmi, DIB_RGB_COLORS);
+               if(!pConvertedInfo)
+               {
+                       DPRINT1("Unable to convert the bitmap Info\n");
+                       goto leave;
+               }
+
+               hdc = IntGdiCreateDC(NULL, NULL, NULL, NULL,FALSE);
+
+        hbmp = GreCreateDIBitmapInternal(hdc,
+                                         pConvertedInfo->bmiHeader.biWidth,
+                                                        pConvertedInfo->bmiHeader.biHeight,
+                                         CBM_INIT,
+                                         pvBits,
+                                         pConvertedInfo,
+                                         DIB_RGB_COLORS,
+                                         0,
+                                         pbmfh->bfSize - pbmfh->bfOffBits,
+                                         0);
+
+               NtGdiDeleteObjectApp(hdc);
+               DIB_FreeConvertedBitmapInfo(pConvertedInfo, pbmi, -1);
+    }
+       else
+       {
+               DPRINT1("Unknown file type!\n");
+       }
+
+leave:
+    /* Unmap our section, we don't need it anymore */
+    ZwUnmapViewOfSection(NtCurrentProcess(), pbmfh);
+
+    DPRINT("Leaving UserLoadImage, hbmp = %p\n", hbmp);
+    return hbmp;
+}