Windows support broken

[gvanem]

Hello. I just discovered this project.

But trying to build for _WIN32 is broken at the moment. Seems it has never worked.
Several issues:

• Use of std::vector w/o an #include <vector>
• Signature should be signature.
• getDMI() should be called get_dmi_data()
• etc.

So with this patch it works for MSVC and clang-cl:

--- a/smbios_decode.c 2024-12-13 01:43:15
+++ b/smbios_decode.c 2025-09-13 07:25:05
@@ -24,22 +24,24 @@

 #include <Windows.h>

-static bool getDMI( std::vector<uint8_t> &buffer )
+static bool get_dmi_data( uint8_t **buffer, size_t *size )
 {
     const BYTE byteSignature[] = { 'B', 'M', 'S', 'R' };
     const DWORD signature = *((DWORD*)byteSignature);

     // get the size of SMBIOS table
-    DWORD size = GetSystemFirmwareTable(signature, 0, NULL, 0);
-    if (size == 0) return false;
-    buffer.resize(size, 0);
+    *size = GetSystemFirmwareTable(signature, 0, NULL, 0);
+    if (*size == 0)
+       return false;
+
+    *buffer = (uint8_t*) malloc(*size);
+    if (*buffer == NULL)
+        return false;
+
     // retrieve the SMBIOS table

-    if (size != GetSystemFirmwareTable(Signature, 0, buffer.data(), size))
-    {
-        buffer.clear();
+    if (*size != GetSystemFirmwareTable(signature, 0, *buffer, *size))
         return false;
-    }

     return true;
 }

[gvanem]

Wait, there are more issues. If you were serious about compiling smbios.c as C++, there are these errors:

smbios.c(131,12): error: call to 'smbios_get_string' is ambiguous
  131 |     return smbios_get_string(&context->entry, index);
      |            ^~~~~~~~~~~~~~~~~
smbios.h(493,27): note: candidate function
  493 | SMBIOS_EXPORT const char *smbios_get_string( const struct Entry *entry, int index );
      |                           ^
smbios.c(115,13): note: candidate function
  115 | const char *smbios_get_string( const struct Entry *entry, int index )
      |             ^
smbios.c(753,9): error: call to 'smbios_reset' is ambiguous
  753 |         smbios_reset(context);
      |         ^~~~~~~~~~~~
smbios.h(461,19): note: candidate function
  461 | SMBIOS_EXPORT int smbios_reset(struct ParserContext * context);
      |                   ^
smbios.c(134,5): note: candidate function
  134 | int smbios_reset( struct ParserContext *context )
      |     ^
2 errors generated.

[brunexgeek]

Thanks for reporting this! I refactored the code a while back and overlooked those parts. I no longer have any Windows machines, so I forgot to update the code to load SMBIOS info in Windows environments. As for the C++ issue, it was caused by an outdated namespace definition, which has already been removed from the header file.