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msvc: adjust build options to harden binaries
authorLev Stipakov <lev@openvpn.net>
Fri, 18 Feb 2022 23:52:55 +0000 (01:52 +0200)
committerGert Doering <gert@greenie.muc.de>
Thu, 17 Mar 2022 13:01:38 +0000 (14:01 +0100)
 - enable hardware-enforced stack protection on
compatible hardware/software (/CETCOMPAT linker option)

 - hash object files with SHA256 (/ZH:SHA_256 compiler option)

 - enable SDL. The required to add

    _CRT_NONSTDC_NO_DEPRECATE
    _CRT_SECURE_NO_WARNINGS
    _WINSOCK_DEPRECATED_NO_WARNINGS

preprocessor definitions. I don't feel like replacing strdup (which is
correct POSIX function) and inet_ntoa (we always pass IPv4 address to
it, inet_ntop will make code more complex)

Above issues were discovered by bitskim.

Before applying this patch, this one must be applied from master:

https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg21774.h
tml

Signed-off-by: Lev Stipakov <lev@openvpn.net>
Acked-by: Frank Lichtenheld <frank@lichtenheld.com>
Message-Id: <20220218235255.334-1-lstipakov@gmail.com>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg23852.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>
src/openvpn/auth_token.c patch | blob | blame | history
src/openvpn/openvpn.vcxproj patch | blob | blame | history
src/openvpnmsica/openvpnmsica.vcxproj patch | blob | blame | history
src/openvpnserv/openvpnserv.vcxproj patch | blob | blame | history
src/tapctl/tapctl.vcxproj patch | blob | blame | history

diff --git a/src/openvpn/auth_token.c b/src/openvpn/auth_token.c
index ca7e5a4dd2faf8c955cc03c7757ffcf51b476eb2..37af6605897ba8735b9c4eb84ac7972901767051 100644 (file)
--- a/src/openvpn/auth_token.c
+++ b/src/openvpn/auth_token.c
@@ -87,6 +87,7 @@ add_session_token_env(struct tls_session *session, struct tls_multi *multi,
 
             default:
                 /* Silence compiler warning, all four possible combinations are covered */
+                state = NULL;
                 ASSERT(0);
         }
     }
diff --git a/src/openvpn/openvpn.vcxproj b/src/openvpn/openvpn.vcxproj
index 91d5ebbe2d94b34cc38cd3baff7955f4d698d6f8..05c63b03530e27dee7af3d0fc8b80fb5fdb23649 100644 (file)
--- a/src/openvpn/openvpn.vcxproj
+++ b/src/openvpn/openvpn.vcxproj
@@ -147,11 +147,13 @@
   </PropertyGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
     <ClCompile>
-      <PreprocessorDefinitions>_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_WARNINGS;_WINSOCK_DEPRECATED_NO_WARNINGS;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <UndefinePreprocessorDefinitions>%(UndefinePreprocessorDefinitions)</UndefinePreprocessorDefinitions>
-      <WarningLevel>Level2</WarningLevel>
       <TreatWarningAsError>true</TreatWarningAsError>
       <AdditionalIncludeDirectories>..\compat;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <WarningLevel>Level2</WarningLevel>
+      <AdditionalOptions>/ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
+      <SDLCheck>true</SDLCheck>
     </ClCompile>
     <ResourceCompile />
     <Link>
@@ -162,11 +164,13 @@
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
     <ClCompile>
-      <PreprocessorDefinitions>_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_WARNINGS;_WINSOCK_DEPRECATED_NO_WARNINGS;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <UndefinePreprocessorDefinitions>%(UndefinePreprocessorDefinitions)</UndefinePreprocessorDefinitions>
-      <WarningLevel>Level2</WarningLevel>
       <TreatWarningAsError>true</TreatWarningAsError>
       <AdditionalIncludeDirectories>..\compat;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <WarningLevel>Level2</WarningLevel>
+      <AdditionalOptions>/ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
+      <SDLCheck>true</SDLCheck>
     </ClCompile>
     <ResourceCompile />
     <Link>
@@ -177,11 +181,13 @@
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|ARM64'">
     <ClCompile>
-      <PreprocessorDefinitions>_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_WARNINGS;_WINSOCK_DEPRECATED_NO_WARNINGS;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <UndefinePreprocessorDefinitions>%(UndefinePreprocessorDefinitions)</UndefinePreprocessorDefinitions>
-      <WarningLevel>Level2</WarningLevel>
       <TreatWarningAsError>true</TreatWarningAsError>
       <AdditionalIncludeDirectories>..\compat;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <WarningLevel>Level2</WarningLevel>
+      <AdditionalOptions>/ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
+      <SDLCheck>true</SDLCheck>
     </ClCompile>
     <ResourceCompile />
     <Link>
@@ -192,44 +198,52 @@
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
     <ClCompile>
-      <PreprocessorDefinitions>_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_WARNINGS;_WINSOCK_DEPRECATED_NO_WARNINGS;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <UndefinePreprocessorDefinitions>%(UndefinePreprocessorDefinitions)</UndefinePreprocessorDefinitions>
-      <WarningLevel>Level2</WarningLevel>
       <TreatWarningAsError>true</TreatWarningAsError>
       <AdditionalIncludeDirectories>..\compat;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <ControlFlowGuard>Guard</ControlFlowGuard>
+      <WarningLevel>Level2</WarningLevel>
+      <AdditionalOptions>/ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
+      <SDLCheck>true</SDLCheck>
     </ClCompile>
     <ResourceCompile />
     <Link>
       <AdditionalDependencies>Ncrypt.lib;gdi32.lib;ws2_32.lib;wininet.lib;crypt32.lib;iphlpapi.lib;winmm.lib;Fwpuclnt.lib;Rpcrt4.lib;setupapi.lib;Advapi32.lib</AdditionalDependencies>
       <AdditionalLibraryDirectories>$(OPENSSL_HOME)/lib;$(LZO_HOME)/lib;$(PKCS11H_HOME)/lib;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
       <SubSystem>Console</SubSystem>
+      <CETCompat>true</CETCompat>
     </Link>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
     <ClCompile>
-      <PreprocessorDefinitions>_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_WARNINGS;_WINSOCK_DEPRECATED_NO_WARNINGS;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <UndefinePreprocessorDefinitions>%(UndefinePreprocessorDefinitions)</UndefinePreprocessorDefinitions>
-      <WarningLevel>Level2</WarningLevel>
       <TreatWarningAsError>true</TreatWarningAsError>
       <AdditionalIncludeDirectories>..\compat;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <ControlFlowGuard>Guard</ControlFlowGuard>
+      <SDLCheck>true</SDLCheck>
+      <WarningLevel>Level2</WarningLevel>
+      <AdditionalOptions>/ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
     <ResourceCompile />
     <Link>
       <AdditionalDependencies>Ncrypt.lib;gdi32.lib;ws2_32.lib;wininet.lib;crypt32.lib;iphlpapi.lib;winmm.lib;Fwpuclnt.lib;Rpcrt4.lib;setupapi.lib;Advapi32.lib</AdditionalDependencies>
       <AdditionalLibraryDirectories>$(OPENSSL_HOME)/lib;$(LZO_HOME)/lib;$(PKCS11H_HOME)/lib;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
       <SubSystem>Console</SubSystem>
+      <CETCompat>true</CETCompat>
     </Link>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|ARM64'">
     <ClCompile>
-      <PreprocessorDefinitions>_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_WARNINGS;_WINSOCK_DEPRECATED_NO_WARNINGS;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <UndefinePreprocessorDefinitions>%(UndefinePreprocessorDefinitions)</UndefinePreprocessorDefinitions>
-      <WarningLevel>Level2</WarningLevel>
       <TreatWarningAsError>true</TreatWarningAsError>
       <AdditionalIncludeDirectories>..\compat;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <ControlFlowGuard>Guard</ControlFlowGuard>
+      <WarningLevel>Level2</WarningLevel>
+      <AdditionalOptions>/ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
+      <SDLCheck>true</SDLCheck>
     </ClCompile>
     <ResourceCompile />
     <Link>
diff --git a/src/openvpnmsica/openvpnmsica.vcxproj b/src/openvpnmsica/openvpnmsica.vcxproj
index 11aa78bb006b62036360da78b09e4de37170855f..3a9f0c97003a3382729dc44d6045402e2922d98c 100644 (file)
--- a/src/openvpnmsica/openvpnmsica.vcxproj
+++ b/src/openvpnmsica/openvpnmsica.vcxproj
@@ -135,6 +135,54 @@
   <PropertyGroup Label="Vcpkg" Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
     <VcpkgEnabled>true</VcpkgEnabled>
   </PropertyGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <Link>
+      <CETCompat>true</CETCompat>
+    </Link>
+    <ClCompile>
+      <AdditionalOptions>/ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
+      <PreprocessorDefinitions>%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <SDLCheck>true</SDLCheck>
+    </ClCompile>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <Link>
+      <CETCompat>true</CETCompat>
+    </Link>
+    <ClCompile>
+      <AdditionalOptions>/ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>%(PreprocessorDefinitions)</PreprocessorDefinitions>
+    </ClCompile>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|ARM64'">
+    <ClCompile>
+      <AdditionalOptions>/ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
+      <PreprocessorDefinitions>%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <SDLCheck>true</SDLCheck>
+    </ClCompile>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|ARM64'">
+    <ClCompile>
+      <AdditionalOptions>/ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
+      <PreprocessorDefinitions>%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <SDLCheck>true</SDLCheck>
+    </ClCompile>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <ClCompile>
+      <AdditionalOptions>/ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
+      <PreprocessorDefinitions>%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <SDLCheck>true</SDLCheck>
+    </ClCompile>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <ClCompile>
+      <AdditionalOptions>/ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
+      <PreprocessorDefinitions>%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <SDLCheck>true</SDLCheck>
+    </ClCompile>
+  </ItemDefinitionGroup>
   <ItemGroup>
     <ClCompile Include="..\tapctl\error.c" />
     <ClCompile Include="..\tapctl\tap.c" />
diff --git a/src/openvpnserv/openvpnserv.vcxproj b/src/openvpnserv/openvpnserv.vcxproj
index 520242f4bc64213ba980704bf7b9072ad1106490..c70db229ea3c35771800b29462190e92290f44ba 100644 (file)
--- a/src/openvpnserv/openvpnserv.vcxproj
+++ b/src/openvpnserv/openvpnserv.vcxproj
@@ -124,7 +124,9 @@
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
     <ClCompile>
       <AdditionalIncludeDirectories>..\openvpn;..\compat;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>_CRT_SECURE_NO_WARNINGS;_CRT_NONSTDC_NO_WARNINGS;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <SDLCheck>true</SDLCheck>
+      <AdditionalOptions>/ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
     <ResourceCompile />
     <Link>
@@ -135,7 +137,9 @@
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
     <ClCompile>
       <AdditionalIncludeDirectories>..\openvpn;..\compat;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>_CRT_SECURE_NO_WARNINGS;_CRT_NONSTDC_NO_WARNINGS;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <SDLCheck>true</SDLCheck>
+      <AdditionalOptions>/ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
     <ResourceCompile />
     <Link>
@@ -146,7 +150,9 @@
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|ARM64'">
     <ClCompile>
       <AdditionalIncludeDirectories>..\openvpn;..\compat;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>_CRT_SECURE_NO_WARNINGS;_CRT_NONSTDC_NO_WARNINGS;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <SDLCheck>true</SDLCheck>
+      <AdditionalOptions>/ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
     <ResourceCompile />
     <Link>
@@ -157,29 +163,37 @@
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
     <ClCompile>
       <AdditionalIncludeDirectories>..\openvpn;..\compat;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>_CRT_SECURE_NO_WARNINGS;_CRT_NONSTDC_NO_WARNINGS;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <SDLCheck>true</SDLCheck>
+      <AdditionalOptions>/ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
     <ResourceCompile />
     <Link>
       <AdditionalDependencies>Userenv.lib;Iphlpapi.lib;ntdll.lib;Fwpuclnt.lib;Netapi32.lib;Shlwapi.lib;%(AdditionalDependencies)</AdditionalDependencies>
       <SubSystem>Console</SubSystem>
+      <CETCompat>true</CETCompat>
     </Link>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
     <ClCompile>
       <AdditionalIncludeDirectories>..\openvpn;..\compat;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>_CRT_SECURE_NO_WARNINGS;_CRT_NONSTDC_NO_WARNINGS;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <SDLCheck>true</SDLCheck>
+      <AdditionalOptions>/ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
     <ResourceCompile />
     <Link>
       <AdditionalDependencies>legacy_stdio_definitions.lib;Userenv.lib;Iphlpapi.lib;ntdll.lib;Fwpuclnt.lib;Netapi32.lib;Shlwapi.lib;%(AdditionalDependencies)</AdditionalDependencies>
       <SubSystem>Console</SubSystem>
+      <CETCompat>true</CETCompat>
     </Link>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|ARM64'">
     <ClCompile>
       <AdditionalIncludeDirectories>..\openvpn;..\compat;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>_CRT_SECURE_NO_WARNINGS;_CRT_NONSTDC_NO_WARNINGS;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <SDLCheck>true</SDLCheck>
+      <AdditionalOptions>/ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
     <ResourceCompile />
     <Link>
diff --git a/src/tapctl/tapctl.vcxproj b/src/tapctl/tapctl.vcxproj
index 79da9d3376f58f71175bfe71f8f9a241b3a20e1c..f439dc4fb13132169050c5e561f2e12d489912ef 100644 (file)
--- a/src/tapctl/tapctl.vcxproj
+++ b/src/tapctl/tapctl.vcxproj
@@ -135,12 +135,54 @@
   <PropertyGroup Label="Vcpkg" Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
     <VcpkgEnabled>true</VcpkgEnabled>
   </PropertyGroup>
-  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|ARM64'" />
-  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|ARM64'" />
-  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" />
-  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" />
-  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" />
-  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" />
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|ARM64'">
+    <ClCompile>
+      <SDLCheck>true</SDLCheck>
+      <AdditionalOptions>/ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
+      <PreprocessorDefinitions>%(PreprocessorDefinitions)</PreprocessorDefinitions>
+    </ClCompile>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|ARM64'">
+    <ClCompile>
+      <SDLCheck>true</SDLCheck>
+      <AdditionalOptions>/ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
+      <PreprocessorDefinitions>%(PreprocessorDefinitions)</PreprocessorDefinitions>
+    </ClCompile>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <ClCompile>
+      <SDLCheck>true</SDLCheck>
+      <AdditionalOptions>/ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
+      <PreprocessorDefinitions>%(PreprocessorDefinitions)</PreprocessorDefinitions>
+    </ClCompile>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <ClCompile>
+      <SDLCheck>true</SDLCheck>
+      <AdditionalOptions>/ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
+      <PreprocessorDefinitions>%(PreprocessorDefinitions)</PreprocessorDefinitions>
+    </ClCompile>
+    <Link>
+      <CETCompat>true</CETCompat>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <ClCompile>
+      <SDLCheck>true</SDLCheck>
+      <AdditionalOptions>/ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
+      <PreprocessorDefinitions>%(PreprocessorDefinitions)</PreprocessorDefinitions>
+    </ClCompile>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <Link>
+      <CETCompat>true</CETCompat>
+    </Link>
+    <ClCompile>
+      <SDLCheck>true</SDLCheck>
+      <AdditionalOptions>/ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
+      <PreprocessorDefinitions>%(PreprocessorDefinitions)</PreprocessorDefinitions>
+    </ClCompile>
+  </ItemDefinitionGroup>
   <ItemGroup>
     <ClCompile Include="error.c" />
     <ClCompile Include="tap.c" />
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