Refine code to make it more safely.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Eric Dong <eric.dong@intel.com>
Reviewed-by: Feng Tian <feng.tian@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15598 6f19259b-4bc3-4df7-8a09-765794883524

8 files changed, 15 insertions, 7 deletions

diff --git a/MdeModulePkg/Universal/Network/Dhcp4Dxe/Dhcp4Io.c b/MdeModulePkg/Universal/Network/Dhcp4Dxe/Dhcp4Io.c
index 19ad101..995bbcf 100644
--- a/MdeModulePkg/Universal/Network/Dhcp4Dxe/Dhcp4Io.c
+++ b/MdeModulePkg/Universal/Network/Dhcp4Dxe/Dhcp4Io.c
@@ -1,7 +1,7 @@
 /** @file

   EFI DHCP protocol implementation.

   

-Copyright (c) 2006 - 2012, Intel Corporation. All rights reserved.<BR>

+Copyright (c) 2006 - 2014, 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

@@ -404,6 +404,7 @@ DhcpLeaseAcquired (
 

   if (DhcpSb->Netmask == 0) {

     Class           = NetGetIpClass (DhcpSb->ClientAddr);

+    ASSERT (Class < IP4_ADDR_CLASSE);

     DhcpSb->Netmask = gIp4AllMasks[Class << 3];

   }

 

diff --git a/MdeModulePkg/Universal/Network/IScsiDxe/IScsiConfig.c b/MdeModulePkg/Universal/Network/IScsiDxe/IScsiConfig.c
index a9c6df9..f8ae161 100644
--- a/MdeModulePkg/Universal/Network/IScsiDxe/IScsiConfig.c
+++ b/MdeModulePkg/Universal/Network/IScsiDxe/IScsiConfig.c
@@ -227,6 +227,7 @@ IScsiUpdateDeviceList (
                   );

   if (Status == EFI_BUFFER_TOO_SMALL) {

     DeviceList = (ISCSI_DEVICE_LIST *) AllocatePool (DataSize);

+    ASSERT (DeviceList != NULL);

 

     gRT->GetVariable (

           L"iSCSIDeviceList",

@@ -291,6 +292,7 @@ IScsiUpdateDeviceList (
   //

   DeviceListSize        = sizeof (ISCSI_DEVICE_LIST) + (NumHandles - 1) * sizeof (ISCSI_MAC_INFO);

   DeviceList            = (ISCSI_DEVICE_LIST *) AllocatePool (DeviceListSize);

+  ASSERT (DeviceList != NULL);

   DeviceList->NumDevice = (UINT8) NumHandles;

 

   for (Index = 0; Index < NumHandles; Index++) {

diff --git a/MdeModulePkg/Universal/Network/IScsiDxe/IScsiMisc.c b/MdeModulePkg/Universal/Network/IScsiDxe/IScsiMisc.c
index a00d805..1cb1fb8 100644
--- a/MdeModulePkg/Universal/Network/IScsiDxe/IScsiMisc.c
+++ b/MdeModulePkg/Universal/Network/IScsiDxe/IScsiMisc.c
@@ -219,6 +219,7 @@ IScsiLunToUnicodeStr (
     TempStr += StrLen (TempStr);

   }

 

+  ASSERT (StrLen(Str) >= 1);

   Str[StrLen (Str) - 1] = 0;

 

   for (Index = StrLen (Str) - 1; Index > 1; Index = Index - 2) {

diff --git a/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4If.c b/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4If.c
index e4ab17a..3c29f75 100644
--- a/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4If.c
+++ b/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4If.c
@@ -1,7 +1,7 @@
 /** @file

   Implement IP4 pesudo interface.

   

-Copyright (c) 2005 - 2013, Intel Corporation. All rights reserved.<BR>

+Copyright (c) 2005 - 2014, 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

@@ -582,6 +582,7 @@ Ip4SetAddress (
 

   Type                      = NetGetIpClass (IpAddr);

   Len                       = NetGetMaskLength (SubnetMask);

+  ASSERT (Len >= 1);

   Netmask                   = gIp4AllMasks[MIN ((Len - 1), Type << 3)];

   Interface->NetBrdcast     = (IpAddr | ~Netmask);

 

diff --git a/MdeModulePkg/Universal/Network/Mtftp4Dxe/Mtftp4Rrq.c b/MdeModulePkg/Universal/Network/Mtftp4Dxe/Mtftp4Rrq.c
index ae157c5..21547ee 100644
--- a/MdeModulePkg/Universal/Network/Mtftp4Dxe/Mtftp4Rrq.c
+++ b/MdeModulePkg/Universal/Network/Mtftp4Dxe/Mtftp4Rrq.c
@@ -1,7 +1,7 @@
 /** @file

   Routines to process Rrq (download).

   

-Copyright (c) 2006 - 2012, Intel Corporation. All rights reserved.<BR>

+Copyright (c) 2006 - 2014, 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

@@ -704,6 +704,7 @@ Mtftp4RrqInput (
 

   } else {

     Packet = (EFI_MTFTP4_PACKET *) NetbufGetByte (UdpPacket, 0, NULL);

+    ASSERT (Packet != NULL);

   }

 

   Opcode = NTOHS (Packet->OpCode);

diff --git a/MdeModulePkg/Universal/Network/Mtftp4Dxe/Mtftp4Wrq.c b/MdeModulePkg/Universal/Network/Mtftp4Dxe/Mtftp4Wrq.c
index 412c472..e825714 100644
--- a/MdeModulePkg/Universal/Network/Mtftp4Dxe/Mtftp4Wrq.c
+++ b/MdeModulePkg/Universal/Network/Mtftp4Dxe/Mtftp4Wrq.c
@@ -1,7 +1,7 @@
 /** @file

   Routines to process Wrq (upload).

   

-Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>

+Copyright (c) 2006 - 2014, 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

@@ -398,6 +398,7 @@ Mtftp4WrqInput (
 

   } else {

     Packet = (EFI_MTFTP4_PACKET *) NetbufGetByte (UdpPacket, 0, NULL);

+    ASSERT (Packet != NULL);

   }

 

   Opcode = NTOHS (Packet->OpCode);

diff --git a/MdeModulePkg/Universal/Network/SnpDxe/Snp.c b/MdeModulePkg/Universal/Network/SnpDxe/Snp.c
index ed583b4..ff93167 100644
--- a/MdeModulePkg/Universal/Network/SnpDxe/Snp.c
+++ b/MdeModulePkg/Universal/Network/SnpDxe/Snp.c
@@ -1,7 +1,7 @@
 /** @file

   Implementation of driver entry point and driver binding protocol.

 

-Copyright (c) 2004 - 2013, Intel Corporation. All rights reserved.<BR>

+Copyright (c) 2004 - 2014, 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

@@ -545,8 +545,8 @@ SimpleNetworkDriverStart (
   // the IO BAR.  Save the index of the BAR into the adapter info structure.

   // for  regular 32bit BARs, 0 is memory mapped, 1 is io mapped

   //

-  ConfigHeader  = (PCI_TYPE00 *) &ConfigInfo.Config.Byte[0];

-  TempBar       = (UINT32 *) &ConfigHeader->Device.Bar[0];

+  ConfigHeader  = (PCI_TYPE00 *) ConfigInfo.Config.Byte;

+  TempBar       = (UINT32 *) ConfigHeader->Device.Bar;

   for (BarIndex = 0; BarIndex <= 5; BarIndex++) {

     if ((*TempBar & PCI_BAR_MEM_MASK) == PCI_BAR_MEM_64BIT) {

       //

diff --git a/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcDhcp.c b/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcDhcp.c
index e016cc0..1293f67 100644
--- a/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcDhcp.c
+++ b/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcDhcp.c
@@ -477,6 +477,7 @@ PxeBcCheckSelectedOffer (
         //

         Status = EFI_NO_RESPONSE;

 

+        ASSERT (Private->NumOffers < PXEBC_MAX_OFFER_NUM);

         for (Index = 0; Index < Private->NumOffers; Index++) {

 

           Offer = &Private->Dhcp4Offers[Index].Packet.Offer;