1 files changed, 107 insertions, 0 deletions
diff --git a/src/detection/bios/bios_windows.c b/src/detection/bios/bios_windows.c
new file mode 100644
index 0000000..42b7674
--- /dev/null
+++ b/src/detection/bios/bios_windows.c
@@ -0,0 +1,107 @@
+#include "bios.h"
+#include "common/smbios.h"
+
+#ifdef _WIN32
+    #include "common/windows/registry.h"
+
+    #include <ntstatus.h>
+    #include "common/windows/nt.h"
+#elif __OpenBSD__
+    #include "common/io.h"
+
+    #include <fcntl.h>
+    #include <unistd.h>
+#elif __sun
+    #include <libdevinfo.h>
+    #include <sys/sunddi.h>
+#elif __APPLE__
+    #include "common/apple/cf_helpers.h"
+    #include <IOKit/IOKitLib.h>
+#endif
+
+typedef struct FFSmbiosBios {
+    FFSmbiosHeader Header;
+
+    uint8_t Vendor;                      // string
+    uint8_t BiosVersion;                 // string
+    uint16_t BiosStartingAddressSegment; // varies
+    uint8_t BiosReleaseDate;             // string
+    uint8_t BiosRomSize;                 // string
+    uint64_t BiosCharacteristics;        // bit field
+
+    // 2.4+
+    uint8_t BiosCharacteristicsExtensionBytes[2];   // bit field
+    uint8_t SystemBiosMajorRelease;                 // varies
+    uint8_t SystemBiosMinorRelease;                 // varies
+    uint8_t EmbeddedControllerFirmwareMajorRelease; // varies
+    uint8_t EmbeddedControllerFirmwareMinorRelease; // varies
+
+    // 3.1+
+    uint16_t ExtendedBiosRomSize; // bit field
+} FF_A_PACKED FFSmbiosBios;
+
+static_assert(offsetof(FFSmbiosBios, ExtendedBiosRomSize) == 0x18,
+    "FFSmbiosBios: Wrong struct alignment");
+
+const char* ffDetectBios(FFBiosResult* bios) {
+    const FFSmbiosHeaderTable* smbiosTable = ffGetSmbiosHeaderTable();
+    if (!smbiosTable) {
+        return "Failed to get SMBIOS data";
+    }
+
+    const FFSmbiosBios* data = (const FFSmbiosBios*) (*smbiosTable)[FF_SMBIOS_TYPE_BIOS];
+    if (!data) {
+        return "BIOS section is not found in SMBIOS data";
+    }
+
+    const char* strings = (const char*) data + data->Header.Length;
+
+    ffStrbufSetStatic(&bios->version, ffSmbiosLocateString(strings, data->BiosVersion));
+    ffCleanUpSmbiosValue(&bios->version);
+    ffStrbufSetStatic(&bios->vendor, ffSmbiosLocateString(strings, data->Vendor));
+    ffCleanUpSmbiosValue(&bios->vendor);
+    ffStrbufSetStatic(&bios->date, ffSmbiosLocateString(strings, data->BiosReleaseDate));
+    ffCleanUpSmbiosValue(&bios->date);
+
+    if (data->Header.Length > offsetof(FFSmbiosBios, SystemBiosMajorRelease)) {
+        ffStrbufSetF(&bios->release, "%u.%u", data->SystemBiosMajorRelease, data->SystemBiosMinorRelease);
+    }
+
+#ifdef _WIN32
+    // Same as GetFirmwareType, but support (?) Windows 7
+    // https://ntdoc.m417z.com/system_information_class
+    SYSTEM_BOOT_ENVIRONMENT_INFORMATION sbei;
+    if (NT_SUCCESS(NtQuerySystemInformation(SystemBootEnvironmentInformation, &sbei, sizeof(sbei), NULL))) {
+        switch (sbei.FirmwareType) {
+            case FirmwareTypeBios:
+                ffStrbufSetStatic(&bios->type, "BIOS");
+                break;
+            case FirmwareTypeUefi:
+                ffStrbufSetStatic(&bios->type, "UEFI");
+                break;
+            default:
+                break;
+        }
+    }
+#elif __sun
+    di_node_t rootNode = di_init("/", DINFOPROP);
+    if (rootNode != DI_NODE_NIL) {
+        char* efiVersion = NULL;
+        if (di_prop_lookup_strings(DDI_DEV_T_ANY, rootNode, "efi-version", &efiVersion) > 0) {
+            ffStrbufSetStatic(&bios->type, "UEFI");
+        } else {
+            ffStrbufSetStatic(&bios->type, "BIOS");
+        }
+    }
+    di_fini(rootNode);
+#elif __HAIKU__ || __OpenBSD__
+    // Currently SMBIOS detection is supported in legacy BIOS only
+    ffStrbufSetStatic(&bios->type, "BIOS");
+#elif __APPLE__
+    // Intel Macs use UEFI from day one
+    FF_IOOBJECT_AUTO_RELEASE io_registry_entry_t deviceEfi = IORegistryEntryFromPath(MACH_PORT_NULL, "IODeviceTree:/efi");
+    ffStrbufSetStatic(&bios->type, deviceEfi ? "UEFI" : "BIOS");
+#endif
+
+    return NULL;
+}