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Add more check to make sure code run safely.

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git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10574 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
lgao4
2010-06-11 07:47:06 +00:00
parent 61ece967cb
commit 4ac4deb706
25 changed files with 275 additions and 102 deletions
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6
EdkCompatibilityPkg/Foundation/Library/Dxe/GraphicsLite/Graphics.c
View File

@@ -1,6 +1,6 @@
/*++
Copyright (c) 2004 - 2009, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2004 - 2010, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
@@ -435,11 +435,13 @@ Returns:
if (GraphicsOutput != NULL) {
SizeOfX = GraphicsOutput->Mode->Info->HorizontalResolution;
SizeOfY = GraphicsOutput->Mode->Info->VerticalResolution;
} else {
} else if (UgaDraw != NULL) {
Status = UgaDraw->GetMode (UgaDraw, &SizeOfX, &SizeOfY, &ColorDepth, &RefreshRate);
if (EFI_ERROR (Status)) {
return EFI_UNSUPPORTED;
}
} else {
return EFI_UNSUPPORTED;
}
Instance = 0;

25
EdkCompatibilityPkg/Foundation/Library/Dxe/GraphicsLite/Print.c
View File

@@ -1,6 +1,6 @@
/*++
Copyright (c) 2004 - 2007, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2004 - 2010, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
@@ -125,8 +125,7 @@ Arguments:
Returns:
EFI_SUCCESS - success
EFI_OUT_OF_RESOURCES - out of resources
Length of string printed to the console
--*/
{
@@ -158,7 +157,7 @@ Returns:
//
Buffer = EfiLibAllocateZeroPool (0x10000);
if (Buffer == NULL) {
return EFI_OUT_OF_RESOURCES;
return 0;
}
if (GraphicsOutput != NULL) {
@@ -337,10 +336,15 @@ Error:
EfiLibSafeFreePool (Blt);
EfiLibSafeFreePool (FontInfo);
#else
gBS->FreePool (LineBuffer);
EfiLibSafeFreePool (LineBuffer);
#endif
gBS->FreePool (Buffer);
return Status;
if (EFI_ERROR (Status)) {
return 0;
}
return BufferLen;
}
@@ -406,19 +410,20 @@ Returns:
(VOID **) &UgaDraw
);
if (EFI_ERROR (Status)) {
return Status;
if (EFI_ERROR (Status) || (UgaDraw != NULL)) {
return 0;
}
}
Sto = NULL;
Status = gBS->HandleProtocol (
Handle,
&gEfiSimpleTextOutProtocolGuid,
(VOID **) &Sto
);
if (EFI_ERROR (Status)) {
return Status;
if (EFI_ERROR (Status) || (Sto != NULL)) {
return 0;
}
return _IPrint (GraphicsOutput, UgaDraw, Sto, X, Y, ForeGround, BackGround, Fmt, Args);

8
EdkCompatibilityPkg/Foundation/Library/Dxe/GraphicsLite/Unicode/Sprint.c
View File

@@ -1,6 +1,6 @@
/*++
Copyright (c) 2004, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2004 - 2010, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
@@ -123,8 +123,8 @@ Returns:
--*/
{
UINTN Index;
CHAR16 UnicodeFormat[EFI_DRIVER_LIB_MAX_PRINT_BUFFER];
CHAR16 UnicodeResult[EFI_DRIVER_LIB_MAX_PRINT_BUFFER];
CHAR16 UnicodeFormat[EFI_DRIVER_LIB_MAX_PRINT_BUFFER+1];
CHAR16 UnicodeResult[EFI_DRIVER_LIB_MAX_PRINT_BUFFER+1];
for (Index = 0; Index < EFI_DRIVER_LIB_MAX_PRINT_BUFFER && FormatString[Index] != '\0'; Index++) {
UnicodeFormat[Index] = (CHAR16) FormatString[Index];
@@ -132,7 +132,7 @@ Returns:
UnicodeFormat[Index] = '\0';
Index = VSPrint (UnicodeResult, EFI_DRIVER_LIB_MAX_PRINT_BUFFER, UnicodeFormat, Marker);
Index = VSPrint (UnicodeResult, sizeof (UnicodeResult), UnicodeFormat, Marker);
for (Index = 0; (Index < (BufferSize - 1)) && UnicodeResult[Index] != '\0'; Index++) {
Buffer[Index] = (CHAR8) UnicodeResult[Index];