From a9f20984cd0ea327bfd5f509e6afc6c4a5b2ff1d Mon Sep 17 00:00:00 2001
From: Stanislav Motylkov <x86corez@gmail.com>
Date: Sun, 15 Apr 2018 01:56:32 +0300
Subject: [PATCH] [I8042PRT] Dump SMBIOS tables into registry for usermode
 access

Reference:
https://social.msdn.microsoft.com/Forums/en-US/0bb0840e-85f4-4cdb-9710-7581f7348f2f/how-to-get-motherboard-serial-number-without-using-wmi-in-c

CORE-12105 CORE-14867
---
 drivers/input/i8042prt/hwhacks.c | 70 ++++++++++++++++++++++++++++++++
 1 file changed, 70 insertions(+)

diff --git a/drivers/input/i8042prt/hwhacks.c b/drivers/input/i8042prt/hwhacks.c
index c7915e16fd4..885f0a25a54 100644
--- a/drivers/input/i8042prt/hwhacks.c
+++ b/drivers/input/i8042prt/hwhacks.c
@@ -226,6 +226,70 @@ i8042ParseSMBiosTables(
     }
 }
 
+static
+VOID
+i8042StoreSMBiosTables(
+    _In_reads_bytes_(TableSize) PVOID SMBiosTables,
+    _In_ ULONG TableSize)
+{
+    static UNICODE_STRING mssmbiosKeyName = RTL_CONSTANT_STRING(L"\\Registry\\Machine\\SYSTEM\\CurrentControlSet\\Services\\mssmbios");
+    static UNICODE_STRING DataName = RTL_CONSTANT_STRING(L"Data");
+    static UNICODE_STRING ValueName = RTL_CONSTANT_STRING(L"SMBiosData");
+    OBJECT_ATTRIBUTES ObjectAttributes;
+    HANDLE KeyHandle = NULL, SubKeyHandle = NULL;
+    NTSTATUS Status;
+
+    /* Create registry key */
+    InitializeObjectAttributes(&ObjectAttributes,
+                               &mssmbiosKeyName,
+                               OBJ_CASE_INSENSITIVE | OBJ_KERNEL_HANDLE,
+                               NULL,
+                               NULL);
+    Status = ZwCreateKey(&KeyHandle,
+                         KEY_WRITE,
+                         &ObjectAttributes,
+                         0,
+                         NULL,
+                         REG_OPTION_VOLATILE,
+                         NULL);
+
+    if (!NT_SUCCESS(Status))
+    {
+        return;
+    }
+
+    /* Create sub key */
+    InitializeObjectAttributes(&ObjectAttributes,
+                               &DataName,
+                               OBJ_CASE_INSENSITIVE | OBJ_KERNEL_HANDLE,
+                               KeyHandle,
+                               NULL);
+    Status = ZwCreateKey(&SubKeyHandle,
+                         KEY_WRITE,
+                         &ObjectAttributes,
+                         0,
+                         NULL,
+                         REG_OPTION_VOLATILE,
+                         NULL);
+
+    if (!NT_SUCCESS(Status))
+    {
+        ZwClose(KeyHandle);
+        return;
+    }
+
+    /* Write value */
+    ZwSetValueKey(SubKeyHandle,
+                  &ValueName,
+                  0,
+                  REG_BINARY,
+                  SMBiosTables,
+                  TableSize);
+
+    ZwClose(SubKeyHandle);
+    ZwClose(KeyHandle);
+}
+
 VOID
 NTAPI
 i8042InitializeHwHacks(
@@ -271,6 +335,12 @@ i8042InitializeHwHacks(
         return;
     }
 
+    /* FIXME: This function should be removed once the mssmbios driver is implemented */
+    /* Store SMBios data in registry */
+    i8042StoreSMBiosTables(AllData + 1,
+                           AllData->FixedInstanceSize);
+    DPRINT1("SMBiosTables HACK, see CORE-14867\n");
+
     /* Parse the table */
     i8042ParseSMBiosTables(AllData + 1,
                            AllData->WnodeHeader.BufferSize);