Windows: Fix potentially insecure library loading

2 files changed, 6 insertions, 3 deletions

diff --git a/src/win.c b/src/win.c
index e9c621e..33b37b6 100644
--- a/src/win.c
+++ b/src/win.c
@@ -167,7 +167,8 @@ puglWinGetMonitor(const PuglView* const view)
 static double
 puglWinGetViewScaleFactor(const PuglView* const view)
 {
-  const HMODULE shcore = LoadLibrary("Shcore.dll");
+  const HMODULE shcore =
+    LoadLibraryEx("Shcore.dll", NULL, LOAD_LIBRARY_SEARCH_SYSTEM32);
   if (!shcore) {
     return 1.0;
   }
@@ -201,7 +202,8 @@ puglInitWorldInternals(PuglWorldType type, PuglWorldFlags PUGL_UNUSED(flags))
   }
 
   if (type == PUGL_PROGRAM) {
-    HMODULE user32 = LoadLibrary("user32.dll");
+    HMODULE user32 =
+      LoadLibraryEx("user32.dll", NULL, LOAD_LIBRARY_SEARCH_SYSTEM32);
     if (user32) {
       PFN_SetProcessDPIAware SetProcessDPIAware =
         (PFN_SetProcessDPIAware)GetProcAddress(user32, "SetProcessDPIAware");
diff --git a/src/win_vulkan.c b/src/win_vulkan.c
index fa686ed..ddd3fbe 100644
--- a/src/win_vulkan.c
+++ b/src/win_vulkan.c
@@ -29,7 +29,8 @@ puglNewVulkanLoader(PuglWorld* PUGL_UNUSED(world))
     return NULL;
   }
 
-  if (!(loader->libvulkan = LoadLibrary("vulkan-1.dll"))) {
+  const DWORD flags = LOAD_LIBRARY_SEARCH_DEFAULT_DIRS;
+  if (!(loader->libvulkan = LoadLibraryEx("vulkan-1.dll", NULL, flags))) {
     free(loader);
     return NULL;
   }