From 9d435046550dd44801784f96cb3a9ee94c112e7c Mon Sep 17 00:00:00 2001
From: Robert Reif <reif@earthlink.net>
Date: Mon, 31 Jul 2006 06:59:43 -0400
Subject: [PATCH] advapi32: Add more helper functions.

Add ADVAPI_GetComputerSid.
---
 dlls/advapi32/advapi32_misc.h |  1 +
 dlls/advapi32/security.c      | 37 +++++++++++++++++++++++++++++++++++++
 2 files changed, 38 insertions(+)

diff --git a/dlls/advapi32/advapi32_misc.h b/dlls/advapi32/advapi32_misc.h
index 436c0fe46fc..35f806e538f 100644
--- a/dlls/advapi32/advapi32_misc.h
+++ b/dlls/advapi32/advapi32_misc.h
@@ -22,5 +22,6 @@
 
 const char * debugstr_sid(PSID sid);
 BOOL ADVAPI_IsLocalComputer(LPCWSTR ServerName);
+BOOL ADVAPI_GetComputerSid(PSID sid);
 
 #endif /* __WINE_ADVAPI32MISC_H */
diff --git a/dlls/advapi32/security.c b/dlls/advapi32/security.c
index d2a5d810e37..3ff208122d8 100644
--- a/dlls/advapi32/security.c
+++ b/dlls/advapi32/security.c
@@ -342,6 +342,43 @@ BOOL ADVAPI_IsLocalComputer(LPCWSTR ServerName)
     return Result;
 }
 
+/************************************************************
+ *                ADVAPI_GetComputerSid
+ *
+ * Reads the computer SID from the registry.
+ */
+BOOL ADVAPI_GetComputerSid(PSID sid)
+{
+    HKEY key;
+    LONG ret;
+                                                                                
+    if ((ret = RegOpenKeyExA(HKEY_LOCAL_MACHINE,
+        "SECURITY\\SAM\\Domains\\Account", 0,
+        KEY_READ, &key)) == ERROR_SUCCESS)
+    {
+        static const WCHAR V[] = { 'V',0 };
+        DWORD size = 0;
+        ret = RegQueryValueExW(key, V, NULL, NULL, NULL, &size);
+        if (ret == ERROR_MORE_DATA || ret == ERROR_SUCCESS)
+        {
+            BYTE * data = HeapAlloc(GetProcessHeap(), 0, size);
+            if (data)
+            {
+                if ((ret = RegQueryValueExW(key, V, NULL, NULL,
+                     data, &size)) == ERROR_SUCCESS)
+                {
+                    /* the SID is in the last 24 bytes of the binary data */
+                    CopyMemory(sid, &data[size-24], 24);
+                    return TRUE;
+                }
+            }
+        }
+        RegCloseKey(key);
+    }
+                                                                                
+    return FALSE;
+}
+
 /*	##############################
 	######	TOKEN FUNCTIONS ######
 	##############################
-- 
2.11.4.GIT