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ShellPkg: Add checking for memory allocation and pointer returns from functions. 

signed-off-by: jcarsey
reviewed-by: lgrosenb

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12542 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
jcarsey 2011-10-17 17:49:21 +00:00
parent 532691c8ba
commit c8c2259156
4 changed files with 16 additions and 9 deletions
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2
ShellPkg/Application/Shell/ShellParametersProtocol.c
View File

@ -1040,7 +1040,7 @@ UpdateStdInStdOutStdErr(
TempHandle = CreateFileInterfaceFile(TempHandle, FALSE);
}
Size = 0;
if (((EFI_FILE_PROTOCOL*)TempHandle)->Read(TempHandle, &Size, NULL) != EFI_BUFFER_TOO_SMALL) {
if (TempHandle != NULL || ((EFI_FILE_PROTOCOL*)TempHandle)->Read(TempHandle, &Size, NULL) != EFI_BUFFER_TOO_SMALL) {
Status = EFI_INVALID_PARAMETER;
} else {
ShellParameters->StdIn = TempHandle;

4
ShellPkg/Application/Shell/ShellProtocol.c
View File

@ -2249,9 +2249,7 @@ EfiShellFindFiles(
MapName = StrnCatGrow(&MapName, NULL, PatternCopy, Count);
if (MapName == NULL) {
Status = EFI_OUT_OF_RESOURCES;
}
if (!EFI_ERROR(Status)) {
} else {
RootDevicePath = EfiShellGetDevicePathFromFilePath(PatternCopy);
if (RootDevicePath == NULL) {
Status = EFI_INVALID_PARAMETER;

8
ShellPkg/Library/UefiShellLevel2CommandsLib/UefiShellLevel2CommandsLib.c
View File

@ -163,8 +163,8 @@ ShellLevel2CommandsLibDestructor (
@param[in] Path The unknown Path Value
@retval NULL A memory allocation failed
@retval NULL a fully qualified path could not be discovered.
@retval other pointer to a fuly qualified path.
@retval NULL A fully qualified path could not be discovered.
@retval other An allocated pointer to a fuly qualified path.
**/
CHAR16*
EFIAPI
@ -194,6 +194,10 @@ GetFullyQualifiedPath(
PathCleanUpDirectories(PathToReturn);
if (PathTpReturn == NULL) {
return NULL;
}
while (PathToReturn[StrLen(PathToReturn)-1] == L'*') {
PathToReturn[StrLen(PathToReturn)-1] = CHAR_NULL;
}

7
ShellPkg/Library/UefiShellLib/UefiShellLib.c
View File

@ -2867,7 +2867,8 @@ ShellPrintHiiEx(
@retval EFI_SUCCESS The Path represents a directory
@retval EFI_NOT_FOUND The Path does not represent a directory
@return other The path failed to open
@retval EFI_OUT_OF_RESOURCES A memory allocation failed.
@return The path failed to open
**/
EFI_STATUS
EFIAPI
@ -2892,6 +2893,10 @@ ShellIsDirectory(
//
if (gEfiShellProtocol != NULL) {
TempLocation = StrnCatGrow(&TempLocation, NULL, DirName, 0);
if (TempLocation == NULL) {
ShellCloseFile(&Handle);
return (EFI_OUT_OF_RESOURCES);
}
TempLocation2 = StrStr(TempLocation, L":");
if (TempLocation2 != NULL && StrLen(StrStr(TempLocation, L":")) == 2) {
*(TempLocation2+1) = CHAR_NULL;