From: Eric Dong Date: Thu, 26 Jun 2014 01:38:46 +0000 (+0000) Subject: Refine code to make it more safely. X-Git-Tag: edk2-stable201903~11400 X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=commitdiff_plain;h=81cd2f536ef0097392b51f96405321ce7b01350c Refine code to make it more safely. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Eric Dong Reviewed-by: Jaben Carsey git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15593 6f19259b-4bc3-4df7-8a09-765794883524 --- diff --git a/ShellPkg/Application/Shell/Shell.c b/ShellPkg/Application/Shell/Shell.c index 4abeafcd44..2f1e3eb65c 100644 --- a/ShellPkg/Application/Shell/Shell.c +++ b/ShellPkg/Application/Shell/Shell.c @@ -509,6 +509,7 @@ UefiMain ( // Reset page break back to default. // ShellInfoObject.PageBreakEnabled = PcdGetBool(PcdShellPageBreakDefault); + ASSERT (ShellInfoObject.ConsoleInfo != NULL); ShellInfoObject.ConsoleInfo->Enabled = TRUE; ShellInfoObject.ConsoleInfo->RowCounter = 0; @@ -2091,6 +2092,7 @@ ProcessCommandLineToFinal( if (EFI_ERROR(Status)) { return (Status); } + ASSERT (*CmdLine != NULL); TrimSpaces(CmdLine); diff --git a/ShellPkg/Application/Shell/ShellProtocol.c b/ShellPkg/Application/Shell/ShellProtocol.c index e4680139d0..3d01283b60 100644 --- a/ShellPkg/Application/Shell/ShellProtocol.c +++ b/ShellPkg/Application/Shell/ShellProtocol.c @@ -460,6 +460,7 @@ EfiShellGetFilePathFromDevicePath( ASSERT((PathForReturn == NULL && PathSize == 0) || (PathForReturn != NULL)); AlignedNode = AllocateCopyPool (DevicePathNodeLength(FilePath), FilePath); + ASSERT (AlignedNode != NULL); // File Path Device Path Nodes 'can optionally add a "\" separator to // the beginning and/or the end of the Path Name string.' diff --git a/ShellPkg/Library/UefiShellDebug1CommandsLib/Bcfg.c b/ShellPkg/Library/UefiShellDebug1CommandsLib/Bcfg.c index b19d8d9fb8..483aa5855e 100644 --- a/ShellPkg/Library/UefiShellDebug1CommandsLib/Bcfg.c +++ b/ShellPkg/Library/UefiShellDebug1CommandsLib/Bcfg.c @@ -1,7 +1,7 @@ /** @file Main file for bcfg shell Debug1 function. - Copyright (c) 2010 - 2013, Intel Corporation. All rights reserved.
+ Copyright (c) 2010 - 2014, Intel Corporation. All rights reserved.
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 @@ -1027,12 +1027,14 @@ BcfgDisplayDumpDebug1( Buffer); if (Status == EFI_BUFFER_TOO_SMALL) { Buffer = AllocateZeroPool(BufferSize); - Status = gRT->GetVariable( - VariableName, - (EFI_GUID*)&gEfiGlobalVariableGuid, - NULL, - &BufferSize, - Buffer); + if (Buffer != NULL) { + Status = gRT->GetVariable( + VariableName, + (EFI_GUID*)&gEfiGlobalVariableGuid, + NULL, + &BufferSize, + Buffer); + } } if (EFI_ERROR(Status) || Buffer == NULL) { @@ -1042,8 +1044,12 @@ BcfgDisplayDumpDebug1( if ((*(UINT16*)(Buffer+4)) != 0) { DevPath = AllocateZeroPool(*(UINT16*)(Buffer+4)); - CopyMem(DevPath, Buffer+6+StrSize((CHAR16*)(Buffer+6)), *(UINT16*)(Buffer+4)); - DevPathString = ConvertDevicePathToText(DevPath, TRUE, FALSE); + if (DevPath != NULL) { + CopyMem(DevPath, Buffer+6+StrSize((CHAR16*)(Buffer+6)), *(UINT16*)(Buffer+4)); + DevPathString = ConvertDevicePathToText(DevPath, TRUE, FALSE); + } else { + DevPathString = NULL; + } } else { DevPath = NULL; DevPathString = NULL; @@ -1213,12 +1219,16 @@ ShellCommandRunBcfg ( CurrentOperation.Order); if (Status == EFI_BUFFER_TOO_SMALL) { CurrentOperation.Order = AllocateZeroPool(Length+(4*sizeof(CurrentOperation.Order[0]))); - Status = gRT->GetVariable( - CurrentOperation.Target == BcfgTargetBootOrder?(CHAR16*)L"BootOrder":(CHAR16*)L"DriverOrder", - (EFI_GUID*)&gEfiGlobalVariableGuid, - NULL, - &Length, - CurrentOperation.Order); + if (CurrentOperation.Order != NULL) { + Status = gRT->GetVariable( + CurrentOperation.Target == BcfgTargetBootOrder?(CHAR16*)L"BootOrder":(CHAR16*)L"DriverOrder", + (EFI_GUID*)&gEfiGlobalVariableGuid, + NULL, + &Length, + CurrentOperation.Order); + } else { + ShellStatus = SHELL_OUT_OF_RESOURCES; + } } } diff --git a/ShellPkg/Library/UefiShellDebug1CommandsLib/Edit/FileBuffer.c b/ShellPkg/Library/UefiShellDebug1CommandsLib/Edit/FileBuffer.c index 179559833e..897700bd34 100644 --- a/ShellPkg/Library/UefiShellDebug1CommandsLib/Edit/FileBuffer.c +++ b/ShellPkg/Library/UefiShellDebug1CommandsLib/Edit/FileBuffer.c @@ -1,7 +1,7 @@ /** @file Implements filebuffer interface functions. - Copyright (c) 2005 - 2012, Intel Corporation. All rights reserved.
+ Copyright (c) 2005 - 2014, Intel Corporation. All rights reserved.
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 @@ -489,8 +489,9 @@ FileBufferPrintLine ( CHAR16 *Buffer; UINTN Limit; - CHAR16 PrintLine[200]; - CHAR16 PrintLine2[250]; + CHAR16 *PrintLine; + CHAR16 *PrintLine2; + UINTN BufLen; // // print start from correct character @@ -502,13 +503,21 @@ FileBufferPrintLine ( Limit = 0; } - StrnCpy (PrintLine, Buffer, MIN(MIN(Limit,MainEditor.ScreenSize.Column), 200)); + BufLen = (MainEditor.ScreenSize.Column + 1) * sizeof (CHAR16); + PrintLine = AllocatePool (BufLen); + ASSERT (PrintLine != NULL); + + StrnCpy (PrintLine, Buffer, MIN(Limit, MainEditor.ScreenSize.Column)); for (; Limit < MainEditor.ScreenSize.Column; Limit++) { PrintLine[Limit] = L' '; } PrintLine[MainEditor.ScreenSize.Column] = CHAR_NULL; - ShellCopySearchAndReplace(PrintLine, PrintLine2, 250, L"%", L"^%", FALSE, FALSE); + + PrintLine2 = AllocatePool (BufLen * 2); + ASSERT (PrintLine2 != NULL); + + ShellCopySearchAndReplace(PrintLine, PrintLine2, BufLen * 2, L"%", L"^%", FALSE, FALSE); ShellPrintEx ( 0, @@ -517,6 +526,9 @@ FileBufferPrintLine ( PrintLine2 ); + FreePool (PrintLine); + FreePool (PrintLine2); + return EFI_SUCCESS; } diff --git a/ShellPkg/Library/UefiShellDebug1CommandsLib/Mm.c b/ShellPkg/Library/UefiShellDebug1CommandsLib/Mm.c index 636acb21db..29411df11e 100644 --- a/ShellPkg/Library/UefiShellDebug1CommandsLib/Mm.c +++ b/ShellPkg/Library/UefiShellDebug1CommandsLib/Mm.c @@ -1,7 +1,7 @@ /** @file Main file for Mm shell Debug1 function. - Copyright (c) 2005 - 2013, Intel Corporation. All rights reserved.
+ Copyright (c) 2005 - 2014, Intel Corporation. All rights reserved.
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 @@ -229,6 +229,7 @@ ShellCommandRunMm ( SHELL_STATUS ShellStatus; CONST CHAR16 *Temp; + Value = 0; Address = 0; PciEAddress = 0; IoDev = NULL; diff --git a/ShellPkg/Library/UefiShellInstall1CommandsLib/Bcfg.c b/ShellPkg/Library/UefiShellInstall1CommandsLib/Bcfg.c index b91b34ffae..a7893f5eee 100644 --- a/ShellPkg/Library/UefiShellInstall1CommandsLib/Bcfg.c +++ b/ShellPkg/Library/UefiShellInstall1CommandsLib/Bcfg.c @@ -1,7 +1,7 @@ /** @file Main file for bcfg shell Install1 function. - Copyright (c) 2010 - 2013, Intel Corporation. All rights reserved.
+ Copyright (c) 2010 - 2014, Intel Corporation. All rights reserved.
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 @@ -1040,8 +1040,12 @@ BcfgDisplayDumpInstall1( if ((*(UINT16*)(Buffer+4)) != 0) { DevPath = AllocateZeroPool(*(UINT16*)(Buffer+4)); - CopyMem(DevPath, Buffer+6+StrSize((CHAR16*)(Buffer+6)), *(UINT16*)(Buffer+4)); - DevPathString = ConvertDevicePathToText(DevPath, TRUE, FALSE); + if (DevPath == NULL) { + DevPathString = NULL; + } else { + CopyMem(DevPath, Buffer+6+StrSize((CHAR16*)(Buffer+6)), *(UINT16*)(Buffer+4)); + DevPathString = ConvertDevicePathToText(DevPath, TRUE, FALSE); + } } else { DevPath = NULL; DevPathString = NULL; @@ -1211,12 +1215,16 @@ ShellCommandRunBcfgInstall ( CurrentOperation.Order); if (Status == EFI_BUFFER_TOO_SMALL) { CurrentOperation.Order = AllocateZeroPool(Length+(4*sizeof(CurrentOperation.Order[0]))); - Status = gRT->GetVariable( - CurrentOperation.Target == BcfgTargetBootOrder?(CHAR16*)L"BootOrder":(CHAR16*)L"DriverOrder", - (EFI_GUID*)&gEfiGlobalVariableGuid, - NULL, - &Length, - CurrentOperation.Order); + if (CurrentOperation.Order == NULL) { + ShellStatus = SHELL_OUT_OF_RESOURCES; + } else { + Status = gRT->GetVariable( + CurrentOperation.Target == BcfgTargetBootOrder?(CHAR16*)L"BootOrder":(CHAR16*)L"DriverOrder", + (EFI_GUID*)&gEfiGlobalVariableGuid, + NULL, + &Length, + CurrentOperation.Order); + } } } diff --git a/ShellPkg/Library/UefiShellLevel1CommandsLib/For.c b/ShellPkg/Library/UefiShellLevel1CommandsLib/For.c index 85b85d8dcf..4fdbdd051d 100644 --- a/ShellPkg/Library/UefiShellLevel1CommandsLib/For.c +++ b/ShellPkg/Library/UefiShellLevel1CommandsLib/For.c @@ -1,7 +1,7 @@ /** @file Main file for endfor and for shell level 1 functions. - Copyright (c) 2009 - 2012, Intel Corporation. All rights reserved.
+ Copyright (c) 2009 - 2014, Intel Corporation. All rights reserved.
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 @@ -333,7 +333,7 @@ ShellCommandRunFor ( CurrentScriptFile = ShellCommandGetCurrentScriptFile(); ASSERT(CurrentScriptFile != NULL); - if (CurrentScriptFile->CurrentCommand->Data == NULL) { + if ((CurrentScriptFile->CurrentCommand != NULL) && (CurrentScriptFile->CurrentCommand->Data == NULL)) { FirstPass = TRUE; // @@ -348,8 +348,7 @@ ShellCommandRunFor ( gShellLevel1HiiHandle, L"EndFor", L"For", - CurrentScriptFile->CurrentCommand!=NULL - ?CurrentScriptFile->CurrentCommand->Line:0); + CurrentScriptFile->CurrentCommand->Line); return (SHELL_DEVICE_ERROR); } @@ -459,9 +458,7 @@ ShellCommandRunFor ( STRING_TOKEN (STR_GEN_PROBLEM_SCRIPT), gShellLevel1HiiHandle, ArgSet, - CurrentScriptFile!=NULL - && CurrentScriptFile->CurrentCommand!=NULL - ? CurrentScriptFile->CurrentCommand->Line:0); + CurrentScriptFile->CurrentCommand->Line); ShellStatus = SHELL_INVALID_PARAMETER; } else { TempSpot = StrStr(ArgSetWalker, L")"); @@ -483,9 +480,7 @@ ShellCommandRunFor ( NULL, STRING_TOKEN (STR_GEN_PROBLEM_SCRIPT), gShellLevel1HiiHandle, - CurrentScriptFile!=NULL - && CurrentScriptFile->CurrentCommand!=NULL - ? CurrentScriptFile->CurrentCommand->Line:0); + CurrentScriptFile->CurrentCommand->Line); ShellStatus = SHELL_INVALID_PARAMETER; } else { *TempSpot = CHAR_NULL; @@ -501,9 +496,7 @@ ShellCommandRunFor ( STRING_TOKEN (STR_GEN_PROBLEM_SCRIPT), gShellLevel1HiiHandle, ArgSet, - CurrentScriptFile!=NULL - && CurrentScriptFile->CurrentCommand!=NULL - ? CurrentScriptFile->CurrentCommand->Line:0); + CurrentScriptFile->CurrentCommand->Line); ShellStatus = SHELL_INVALID_PARAMETER; } else { if (ArgSetWalker[0] == L'-') { @@ -523,9 +516,7 @@ ShellCommandRunFor ( STRING_TOKEN (STR_GEN_PROBLEM_SCRIPT), gShellLevel1HiiHandle, ArgSet, - CurrentScriptFile!=NULL - && CurrentScriptFile->CurrentCommand!=NULL - ? CurrentScriptFile->CurrentCommand->Line:0); + CurrentScriptFile->CurrentCommand->Line); ShellStatus = SHELL_INVALID_PARAMETER; } else { if (ArgSetWalker[0] == L'-') { @@ -552,9 +543,7 @@ ShellCommandRunFor ( STRING_TOKEN (STR_GEN_PROBLEM_SCRIPT), gShellLevel1HiiHandle, ArgSet, - CurrentScriptFile!=NULL - && CurrentScriptFile->CurrentCommand!=NULL - ? CurrentScriptFile->CurrentCommand->Line:0); + CurrentScriptFile->CurrentCommand->Line); ShellStatus = SHELL_INVALID_PARAMETER; } else { if (*ArgSetWalker == L')') { @@ -574,9 +563,7 @@ ShellCommandRunFor ( STRING_TOKEN (STR_GEN_PROBLEM_SCRIPT), gShellLevel1HiiHandle, ArgSet, - CurrentScriptFile!=NULL - && CurrentScriptFile->CurrentCommand!=NULL - ? CurrentScriptFile->CurrentCommand->Line:0); + CurrentScriptFile->CurrentCommand->Line); ShellStatus = SHELL_INVALID_PARAMETER; } }