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fixed NtUserEnumDisplaySettings bug inside IntEnumDisplaySettings DWORD DisplayNumber was not init before it was use.

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GetDisplayNumberFromDeviceName did not allown pdevice with NULL value or string lenght is 0 thuse have been fixed. 


svn path=/trunk/; revision=33274
This commit is contained in:
Magnus Olsen 2008-05-04 17:58:43 +00:00
parent 2260e9862a
commit 958edf5d4b
1 changed files with 43 additions and 4 deletions
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47
reactos/subsystems/win32/win32k/objects/dc.c
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@ -2717,8 +2717,17 @@ GetDisplayNumberFromDeviceName(
if (DisplayNumber == NULL)
return STATUS_INVALID_PARAMETER_2;
if (pDeviceName && pDeviceName->Length <= DisplayString.Length)
return STATUS_OBJECT_NAME_INVALID;
DPRINT1("GetDisplayNumberFromDeviceName Pass 1 seh \n");
if ((pDeviceName != NULL) && (pDeviceName->Length != 0))
{
if (pDeviceName->Length <= DisplayString.Length)
{
DPRINT1("GetDisplayNumberFromDeviceName FAIL pDeviceName : %wZ \n",pDeviceName);
DPRINT1("GetDisplayNumberFromDeviceName FAIL pDeviceName->Length : %d \n",pDeviceName->Length);
return STATUS_OBJECT_NAME_INVALID;
}
}
if (pDeviceName == NULL || pDeviceName->Length == 0)
{
@ -2757,7 +2766,7 @@ GetDisplayNumberFromDeviceName(
Number = Number * 10 + Char - L'0';
else if (Char != L'\0')
return STATUS_OBJECT_NAME_INVALID;
}
}
*DisplayNumber = Number - 1;
}
@ -2783,7 +2792,7 @@ IntEnumDisplaySettings(
static UNICODE_STRING CachedDeviceName;
PDEVMODEW CachedMode = NULL;
DEVMODEW DevMode;
ULONG DisplayNumber;
ULONG DisplayNumber = 0;
if (!NT_SUCCESS(GetDisplayNumberFromDeviceName(pDeviceName, &DisplayNumber)))
{
@ -2791,6 +2800,8 @@ IntEnumDisplaySettings(
return FALSE;
}
DPRINT1("IntEnumDisplaySettings Pass 1 seh \n");
DPRINT("DevMode->dmSize = %d\n", pDevMode->dmSize);
DPRINT("DevMode->dmExtraSize = %d\n", pDevMode->dmDriverExtra);
if (pDevMode->dmSize != SIZEOF_DEVMODEW_300 &&
@ -2801,13 +2812,17 @@ IntEnumDisplaySettings(
return FALSE;
}
DPRINT1("IntEnumDisplaySettings Pass 2 seh \n");
if (iModeNum == ENUM_CURRENT_SETTINGS)
{
DPRINT1("IntEnumDisplaySettings ENUM_CURRENT_SETTINGS \n");
CachedMode = &PrimarySurface.DMW;
ASSERT(CachedMode->dmSize > 0);
}
else if (iModeNum == ENUM_REGISTRY_SETTINGS)
{
DPRINT1("IntEnumDisplaySettings ENUM_REGISTRY_SETTINGS \n");
RtlZeroMemory(&DevMode, sizeof (DevMode));
DevMode.dmSize = sizeof (DevMode);
DevMode.dmDriverExtra = 0;
@ -2821,9 +2836,13 @@ IntEnumDisplaySettings(
/* FIXME: Maybe look for the matching devmode supplied by the
* driver so we can provide driver private/extra data?
*/
DPRINT1("IntEnumDisplaySettings Pass 3 seh \n");
}
else
{
DPRINT1("IntEnumDisplaySettings NO FLAGs \n");
BOOL IsCachedDevice = (CachedDevModes != NULL);
if (CachedDevModes &&
@ -2840,6 +2859,8 @@ IntEnumDisplaySettings(
LPWSTR CurrentName;
DRVENABLEDATA DrvEnableData;
DPRINT1("IntEnumDisplaySettings iModeNum \n");
/* Free resources from last driver cache */
if (IsCachedDevice == FALSE && CachedDeviceName.Buffer != NULL)
{
@ -2854,12 +2875,16 @@ IntEnumDisplaySettings(
return FALSE;
}
DPRINT1("IntEnumDisplaySettings Pass 4 seh \n");
if (!IntPrepareDriverIfNeeded())
{
DPRINT1("IntPrepareDriverIfNeeded failed\n");
return FALSE;
}
DPRINT1("IntEnumDisplaySettings Pass 5 seh \n");
/*
* DriverFileNames may be a list of drivers in REG_SZ_MULTI format,
* scan all of them until a good one found.
@ -2940,6 +2965,9 @@ IntEnumDisplaySettings(
SetLastWin32Error(STATUS_NO_MEMORY);
return FALSE;
}
DPRINT1("IntEnumDisplaySettings Pass 6 seh \n");
if (CachedDevModes != NULL)
{
RtlCopyMemory(NewBuffer, CachedDevModes, SizeUsed);
@ -2978,12 +3006,19 @@ IntEnumDisplaySettings(
}
/* return cached info */
DPRINT1("IntEnumDisplaySettings return cached info \n");
CachedMode = CachedDevModes;
if (CachedMode >= CachedDevModesEnd)
{
SetLastWin32Error(STATUS_NO_MORE_ENTRIES);
return FALSE;
}
DPRINT1("IntEnumDisplaySettings Pass 7 seh \n");
while (iModeNum-- > 0 && CachedMode < CachedDevModesEnd)
{
assert(CachedMode->dmSize > 0);
@ -2994,10 +3029,14 @@ IntEnumDisplaySettings(
SetLastWin32Error(STATUS_NO_MORE_ENTRIES);
return FALSE;
}
DPRINT1("IntEnumDisplaySettings Pass 8 seh \n");
}
ASSERT(CachedMode != NULL);
DPRINT1("IntEnumDisplaySettings Pass 9 seh \n");
RtlCopyMemory(pDevMode, CachedMode, min(pDevMode->dmSize, CachedMode->dmSize));
RtlZeroMemory(pDevMode + pDevMode->dmSize, pDevMode->dmDriverExtra);
RtlCopyMemory(pDevMode + min(pDevMode->dmSize, CachedMode->dmSize), CachedMode + CachedMode->dmSize, min(pDevMode->dmDriverExtra, CachedMode->dmDriverExtra));