[janderwald] 28794: - add hActiveBuffer member to struct to ensure that modifying the screenbuffer is secured - fix a bugs in the screen buffer resize code - resizing now "works" (unfortunately a few drawing bugs show up)
3 Sep
2007
3 Sep
'07
1:58 a.m.
Author: janderwald
Date: Mon Sep 3 05:58:43 2007
New Revision: 28794
URL: http://svn.reactos.org/svn/reactos?rev=28794&view=rev
Log:
- add hActiveBuffer member to struct to ensure that modifying the screenbuffer is secured
- fix a bugs in the screen buffer resize code
- resizing now "works" (unfortunately a few drawing bugs show up)
Modified:
trunk/reactos/subsystems/win32/csrss/include/conio.h
trunk/reactos/subsystems/win32/csrss/win32csr/conio.c
trunk/reactos/subsystems/win32/csrss/win32csr/guiconsole.c
trunk/reactos/subsystems/win32/csrss/win32csr/w32csr.h
Modified: trunk/reactos/subsystems/win32/csrss/include/conio.h
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/subsystems/win32/csrss/inc…
==============================================================================
--- trunk/reactos/subsystems/win32/csrss/include/conio.h (original)
+++ trunk/reactos/subsystems/win32/csrss/include/conio.h Mon Sep 3 05:58:43 2007
@@ -70,6 +70,7 @@
WORD WaitingChars;
WORD WaitingLines; /* number of chars and lines in input queue */
PCSRSS_SCREEN_BUFFER ActiveBuffer; /* Pointer to currently active screen buffer */
+ HANDLE hActiveBuffer;
WORD Mode; /* Console mode flags */
WORD EchoCount; /* count of chars to echo, in line buffered mode
*/
UNICODE_STRING Title; /* Title of console */
Modified: trunk/reactos/subsystems/win32/csrss/win32csr/conio.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/subsystems/win32/csrss/win…
==============================================================================
--- trunk/reactos/subsystems/win32/csrss/win32csr/conio.c (original)
+++ trunk/reactos/subsystems/win32/csrss/win32csr/conio.c Mon Sep 3 05:58:43 2007
@@ -153,6 +153,7 @@
Console->Mode = ENABLE_LINE_INPUT | ENABLE_ECHO_INPUT | ENABLE_PROCESSED_INPUT |
ENABLE_MOUSE_INPUT;
Console->EarlyReturn = FALSE;
Console->ActiveBuffer = NULL;
+ Console->hActiveBuffer = INVALID_HANDLE_VALUE;
InitializeListHead(&Console->InputEvents);
Console->CodePage = GetOEMCP();
Console->OutputCodePage = GetOEMCP();
@@ -174,20 +175,22 @@
/* allocate console screen buffer */
NewBuffer = HeapAlloc(Win32CsrApiHeap, HEAP_ZERO_MEMORY, sizeof(CSRSS_SCREEN_BUFFER));
+ if (NULL == NewBuffer)
+ {
+ RtlFreeUnicodeString(&Console->Title);
+ DeleteCriticalSection(&Console->Header.Lock);
+ CloseHandle(Console->ActiveEvent);
+ return STATUS_INSUFFICIENT_RESOURCES;
+ }
/* init screen buffer with defaults */
NewBuffer->CursorInfo.bVisible = TRUE;
NewBuffer->CursorInfo.dwSize = 5;
/* make console active, and insert into console list */
Console->ActiveBuffer = (PCSRSS_SCREEN_BUFFER) NewBuffer;
+ Console->hActiveBuffer = INVALID_HANDLE_VALUE;
/* add a reference count because the buffer is tied to the console */
InterlockedIncrement(&Console->ActiveBuffer->Header.ReferenceCount);
- if (NULL == NewBuffer)
- {
- RtlFreeUnicodeString(&Console->Title);
- DeleteCriticalSection(&Console->Header.Lock);
- CloseHandle(Console->ActiveEvent);
- return STATUS_INSUFFICIENT_RESOURCES;
- }
+
if (! GuiMode)
{
@@ -332,6 +335,7 @@
ProcessData->Console = 0;
return Request->Status = Status;
}
+ Console->hActiveBuffer = Request->Data.AllocConsoleRequest.OutputHandle;
}
/* Duplicate the Event */
@@ -1065,6 +1069,7 @@
#endif
Console->ActiveBuffer = NULL;
+ Console->hActiveBuffer = INVALID_HANDLE_VALUE;
ConioCleanupConsole(Console);
CloseHandle(Console->ActiveEvent);
@@ -2272,6 +2277,7 @@
}
/* tie console to new buffer */
Console->ActiveBuffer = Buff;
+ Console->hActiveBuffer = Request->Data.SetScreenBufferRequest.OutputHandle;
/* inc ref count on new buffer */
InterlockedIncrement(&Buff->Header.ReferenceCount);
/* Redraw the console */
Modified: trunk/reactos/subsystems/win32/csrss/win32csr/guiconsole.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/subsystems/win32/csrss/win…
==============================================================================
--- trunk/reactos/subsystems/win32/csrss/win32csr/guiconsole.c (original)
+++ trunk/reactos/subsystems/win32/csrss/win32csr/guiconsole.c Mon Sep 3 05:58:43 2007
@@ -1614,7 +1614,15 @@
{
DWORD windx, windy;
RECT rect;
-
+ PCSRSS_SCREEN_BUFFER ActiveBuffer;
+ PCSRSS_PROCESS_DATA ProcessData = NULL;
+
+ if (Console->ProcessList.Flink != &Console->ProcessList)
+ {
+ ProcessData = CONTAINING_RECORD(Console->ProcessList.Flink, CSRSS_PROCESS_DATA,
ProcessEntry);
+ ConioLockScreenBuffer(ProcessData, Console->hActiveBuffer, (Object_t
**)&ActiveBuffer);
+ }
+
/* apply text / background color */
GuiData->ScreenText = pConInfo->ScreenText;
GuiData->ScreenBackground = pConInfo->ScreenBackground;
@@ -1625,38 +1633,51 @@
windx = LOWORD(pConInfo->ScreenBuffer);
windy = HIWORD(pConInfo->ScreenBuffer);
- if (windx != Console->ActiveBuffer->MaxX || windy !=
Console->ActiveBuffer->MaxY)
+ if (windx != ActiveBuffer->MaxX || windy != ActiveBuffer->MaxY)
{
BYTE * Buffer = HeapAlloc(Win32CsrApiHeap, 0, windx * windy * 2);
+
if (Buffer)
{
DWORD Offset = 0;
DWORD BufferOffset = 0;
USHORT CurrentY;
BYTE * OldBuffer;
+ USHORT value;
DWORD diff;
- DWORD value = ((((DWORD)Console->ActiveBuffer->DefaultAttrib) << 16)
| 0x20);
-
- OldBuffer = Console->ActiveBuffer->Buffer;
-
- for (CurrentY = 0; CurrentY < min(Console->ActiveBuffer->MaxY, windy);
CurrentY++)
- {
- if (windx < Console->ActiveBuffer->MaxX)
+ DWORD i;
+
+ value = MAKEWORD(' ', ActiveBuffer->DefaultAttrib);
+
+ DPRINT("MaxX %d MaxY %d windx %d windy %d value %04x DefaultAttrib
%d\n",ActiveBuffer->MaxX, ActiveBuffer->MaxY, windx, windy, value,
ActiveBuffer->DefaultAttrib);
+ OldBuffer = ActiveBuffer->Buffer;
+
+ for (CurrentY = 0; CurrentY < min(ActiveBuffer->MaxY, windy); CurrentY++)
+ {
+ if (windx <= ActiveBuffer->MaxX)
{
/* reduce size */
RtlCopyMemory(&Buffer[Offset], &OldBuffer[BufferOffset], windx *
2);
Offset += (windx * 2);
- BufferOffset += (Console->ActiveBuffer->MaxX * 2);
+ BufferOffset += (ActiveBuffer->MaxX * 2);
}
else
{
/* enlarge size */
- diff = windx - Console->ActiveBuffer->MaxX;
-
- RtlCopyMemory(&Buffer[Offset], &OldBuffer[BufferOffset],
Console->ActiveBuffer->MaxX * 2);
- Offset += (Console->ActiveBuffer->MaxX * 2);
+ RtlCopyMemory(&Buffer[Offset], &OldBuffer[BufferOffset],
ActiveBuffer->MaxX * 2);
+ Offset += (ActiveBuffer->MaxX * 2);
+
+ diff = windx - ActiveBuffer->MaxX;
/* zero new part of it */
- memset(&Buffer[Offset], value, (diff * 2));
+#if HAVE_WMEMSET
+ wmemset((WCHAR*)&Buffer[Offset], value, diff);
+#else
+ for (i = 0; i < diff * 2; i++)
+ {
+ Buffer[Offset * 2] = ' ';
+ Buffer[Offset * 2 + 1] = ActiveBuffer->DefaultAttrib;
+ }
+#endif
Offset += (diff * 2);
BufferOffset += (Console->ActiveBuffer->MaxX * 2);
}
@@ -1665,17 +1686,54 @@
if (windy > Console->ActiveBuffer->MaxY)
{
diff = windy - Console->ActiveBuffer->MaxX;
- memset(&Buffer[Offset], value, diff * 2 * windx);
- }
- (void)InterlockedExchangePointer((PVOID volatile
*)Console->ActiveBuffer->Buffer, Buffer);
+#if HAVE_WMEMSET
+ wmemset((WCHAR*)&Buffer[Offset], value, diff * windx);
+#else
+ for (i = 0; i < diff * 2; i++)
+ {
+ Buffer[Offset * 2] = ' ';
+ Buffer[Offset * 2 + 1] = ActiveBuffer->DefaultAttrib;
+ }
+#endif
+ }
+
+ (void)InterlockedExchangePointer((PVOID volatile
*)&Console->ActiveBuffer->Buffer, Buffer);
HeapFree(Win32CsrApiHeap, 0, OldBuffer);
Console->ActiveBuffer->MaxX = windx;
Console->ActiveBuffer->MaxY = windy;
+ InvalidateRect(pConInfo->hConsoleWindow, NULL, TRUE);
+ }
+ else
+ {
+ if (ProcessData)
+ {
+ ConioUnlockScreenBuffer(ActiveBuffer);
+ }
+ return;
}
}
windx = LOWORD(pConInfo->WindowSize);
windy = HIWORD(pConInfo->WindowSize);
+
+ if (windx > Console->Size.X)
+ {
+ PWCHAR LineBuffer = HeapAlloc(Win32CsrApiHeap, HEAP_ZERO_MEMORY, windx *
sizeof(WCHAR));
+ if (LineBuffer)
+ {
+ HeapFree(Win32CsrApiHeap, 0, GuiData->LineBuffer);
+ GuiData->LineBuffer = LineBuffer;
+ }
+ else
+ {
+ if (ProcessData)
+ {
+ ConioUnlockScreenBuffer(ActiveBuffer);
+ }
+ return;
+ }
+ }
+
if (windx != Console->Size.X || windy != Console->Size.Y)
{
@@ -1701,7 +1759,10 @@
//ShowScrollBar(GuiData->hHScrollBar, SB_CTL, FALSE);
}
}
- /* repaint window */
+ if (ProcessData)
+ {
+ ConioUnlockScreenBuffer(ActiveBuffer);
+ }
InvalidateRect(pConInfo->hConsoleWindow, NULL, TRUE);
}
Modified: trunk/reactos/subsystems/win32/csrss/win32csr/w32csr.h
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/subsystems/win32/csrss/win…
==============================================================================
--- trunk/reactos/subsystems/win32/csrss/win32csr/w32csr.h (original)
+++ trunk/reactos/subsystems/win32/csrss/win32csr/w32csr.h Mon Sep 3 05:58:43 2007
@@ -23,6 +23,7 @@
#include <win32csr.h>
#include <tchar.h>
+#include <wchar.h>
#include <cpl.h>
#include "resource.h"
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janderwald＠svn.reactos.org