From 6f4339f16aff49bb327ad6d8ba49da1db704f938 Mon Sep 17 00:00:00 2001
From: FunkyFr3sh <cc.red.alert.1@googlemail.com>
Date: Sat, 28 Sep 2024 22:07:33 +0200
Subject: [PATCH] fix versionhelpers for legacy build

---
 inc/versionhelpers.h | 11 +++++------
 src/versionhelpers.c | 13 +++++++++++++
 2 files changed, 18 insertions(+), 6 deletions(-)

diff --git a/inc/versionhelpers.h b/inc/versionhelpers.h
index bf622e6..7191349 100644
--- a/inc/versionhelpers.h
+++ b/inc/versionhelpers.h
@@ -29,13 +29,12 @@
 #endif
 
 #if (_WIN32_WINNT < _WIN32_WINNT_WIN2K)
-#define RtlVerifyVersionInfo(a,b,c) 1
 #define VerifyVersionInfoW(a,b,c) 0 
-#define VerSetConditionMask(a,b,c) 0
 #endif
 
 void verhelp_init();
 BOOL verhelp_verify_version(PRTL_OSVERSIONINFOEXW versionInfo, ULONG typeMask, ULONGLONG conditionMask);
+ULONGLONG verhelp_set_mask(ULONGLONG ConditionMask, DWORD TypeMask, BYTE Condition);
 const char* verhelp_wine_get_version();
 void verhelp_wine_get_host_version(const char** sysname, const char** release);
 
@@ -43,7 +42,7 @@ VERSIONHELPERAPI IsWindowsVersionOrGreater(DWORD major, DWORD minor, DWORD build
 {
     RTL_OSVERSIONINFOEXW vi = { sizeof(vi),major,minor,build,0,{0},servpack };
     return verhelp_verify_version(&vi, VER_MAJORVERSION | VER_MINORVERSION | VER_BUILDNUMBER | VER_SERVICEPACKMAJOR,
-        VerSetConditionMask(VerSetConditionMask(VerSetConditionMask(VerSetConditionMask(0,
+        verhelp_set_mask(verhelp_set_mask(verhelp_set_mask(verhelp_set_mask(0,
             VER_MAJORVERSION, VER_GREATER_EQUAL),
             VER_MINORVERSION, VER_GREATER_EQUAL),
             VER_BUILDNUMBER, VER_GREATER_EQUAL),
@@ -54,7 +53,7 @@ VERSIONHELPERAPI IsWindowsVersion(DWORD major, DWORD minor, DWORD build, WORD se
 {
     RTL_OSVERSIONINFOEXW vi = { sizeof(vi),major,minor,build,0,{0},servpack };
     return verhelp_verify_version(&vi, VER_MAJORVERSION | VER_MINORVERSION | VER_BUILDNUMBER | VER_SERVICEPACKMAJOR,
-        VerSetConditionMask(VerSetConditionMask(VerSetConditionMask(VerSetConditionMask(0,
+        verhelp_set_mask(verhelp_set_mask(verhelp_set_mask(verhelp_set_mask(0,
             VER_MAJORVERSION, VER_EQUAL),
             VER_MINORVERSION, VER_EQUAL),
             VER_BUILDNUMBER, VER_GREATER_EQUAL),
@@ -65,7 +64,7 @@ VERSIONHELPERAPI IsWindowsVersionAnySP(DWORD major, DWORD minor, DWORD build)
 {
     RTL_OSVERSIONINFOEXW vi = { sizeof(vi),major,minor,build,0,{0},0 };
     return verhelp_verify_version(&vi, VER_MAJORVERSION | VER_MINORVERSION | VER_BUILDNUMBER | VER_SERVICEPACKMAJOR,
-        VerSetConditionMask(VerSetConditionMask(VerSetConditionMask(VerSetConditionMask(0,
+        verhelp_set_mask(verhelp_set_mask(verhelp_set_mask(verhelp_set_mask(0,
             VER_MAJORVERSION, VER_EQUAL),
             VER_MINORVERSION, VER_EQUAL),
             VER_BUILDNUMBER, VER_GREATER_EQUAL),
@@ -134,7 +133,7 @@ VERSIONHELPERAPI IsWindows11OrGreater(void) {
 
 VERSIONHELPERAPI IsWindowsServer(void) {
     OSVERSIONINFOEXW vi = {sizeof(vi),0,0,0,0,{0},0,0,0,VER_NT_WORKSTATION};
-    return !verhelp_verify_version(&vi, VER_PRODUCT_TYPE, VerSetConditionMask(0, VER_PRODUCT_TYPE, VER_EQUAL));
+    return !verhelp_verify_version(&vi, VER_PRODUCT_TYPE, verhelp_set_mask(0, VER_PRODUCT_TYPE, VER_EQUAL));
 }
 
 VERSIONHELPERAPI IsWindowsXP(void) {
diff --git a/src/versionhelpers.c b/src/versionhelpers.c
index e422e90..7c19528 100644
--- a/src/versionhelpers.c
+++ b/src/versionhelpers.c
@@ -2,10 +2,12 @@
 #include "versionhelpers.h"
 
 typedef NTSTATUS(WINAPI* RTLVERIFYVERSIONINFOPROC)(PRTL_OSVERSIONINFOEXW, ULONG, ULONGLONG);
+typedef ULONGLONG(WINAPI* VERSETCONDITIONMASKPROC)(ULONGLONG, DWORD, BYTE);
 typedef const char* (CDECL* WINE_GET_VERSIONPROC)();
 typedef void (CDECL* WINE_GET_HOST_VERSIONPROC)(const char** sysname, const char** release);
 
 static RTLVERIFYVERSIONINFOPROC RtlVerifyVersionInfo;
+static VERSETCONDITIONMASKPROC VerSetConditionMaskProc;
 static WINE_GET_VERSIONPROC wine_get_version;
 static WINE_GET_HOST_VERSIONPROC wine_get_host_version;
 
@@ -19,6 +21,12 @@ void verhelp_init()
         wine_get_version = (WINE_GET_VERSIONPROC)GetProcAddress(mod, "wine_get_version");
         wine_get_host_version = (WINE_GET_HOST_VERSIONPROC)GetProcAddress(mod, "wine_get_host_version");
     }
+
+    mod = GetModuleHandleA("Kernel32.dll");
+    if (mod)
+    {
+        VerSetConditionMaskProc = (VERSETCONDITIONMASKPROC)GetProcAddress(mod, "VerSetConditionMask");
+    }
 }
 
 BOOL verhelp_verify_version(PRTL_OSVERSIONINFOEXW versionInfo, ULONG typeMask, ULONGLONG conditionMask)
@@ -28,6 +36,11 @@ BOOL verhelp_verify_version(PRTL_OSVERSIONINFOEXW versionInfo, ULONG typeMask, U
         VerifyVersionInfoW(versionInfo, typeMask, conditionMask);
 }
 
+ULONGLONG verhelp_set_mask(ULONGLONG ConditionMask, DWORD TypeMask, BYTE Condition)
+{
+    return VerSetConditionMaskProc ? VerSetConditionMaskProc(ConditionMask, TypeMask, Condition) : 0;
+}
+
 const char* verhelp_wine_get_version()
 {
     return wine_get_version ? wine_get_version() : NULL;