Robert Reif : advapi32: Add more helper functions.

[Alexandre Julliard]

Module: wine
Branch: refs/heads/master
Commit: 9d435046550dd44801784f96cb3a9ee94c112e7c
URL:    http://source.winehq.org/git/?p=wine.git;a=commit;h=9d435046550dd44801784f96cb3a9ee94c112e7c

Author: Robert Reif <reif at earthlink.net>
Date:   Mon Jul 31 06:59:43 2006 -0400

advapi32: Add more helper functions.

Add ADVAPI_GetComputerSid.

---

 dlls/advapi32/advapi32_misc.h |    1 +
 dlls/advapi32/security.c      |   37 +++++++++++++++++++++++++++++++++++++
 2 files changed, 38 insertions(+), 0 deletions(-)

diff --git a/dlls/advapi32/advapi32_misc.h b/dlls/advapi32/advapi32_misc.h
index 436c0fe..35f806e 100644
--- a/dlls/advapi32/advapi32_misc.h
+++ b/dlls/advapi32/advapi32_misc.h
@@ -22,5 +22,6 @@ #define __WINE_ADVAPI32MISC_H
 
 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 d2a5d81..3ff2081 100644
--- a/dlls/advapi32/security.c
+++ b/dlls/advapi32/security.c
@@ -342,6 +342,43 @@ BOOL ADVAPI_IsLocalComputer(LPCWSTR Serv
     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 ######
 	##############################