[jgardou] 64545: [NTOS/SE] - Do not fail when setting the same primary token for a process. - Fake equality of tokens when both of them are (not) restricted. CORE-8554 #resolve #comment JRE-7u65 no...

Author: jgardou
Date: Sun Oct  5 14:20:08 2014
New Revision: 64545

URL: http://svn.reactos.org/svn/reactos?rev=64545&view=rev
Log:
[NTOS/SE]
 - Do not fail when setting the same primary token for a process.
 - Fake equality of tokens when both of them are (not) restricted.
CORE-8554 #resolve #comment JRE-7u65 now installs fine

Modified:
    trunk/reactos/ntoskrnl/se/token.c

Modified: trunk/reactos/ntoskrnl/se/token.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/se/token.c?rev=64…
==============================================================================
--- trunk/reactos/ntoskrnl/se/token.c	[iso-8859-1] (original)
+++ trunk/reactos/ntoskrnl/se/token.c	[iso-8859-1] Sun Oct  5 14:20:08 2014
@@ -108,6 +108,8 @@
         }
 
         /* FIXME: Check if every privilege that is present in either token is also
present in the other one */
+        DPRINT1("FIXME: Pretending tokens are equal!\n");
+        IsEqual = TRUE;
     }
 
     *Equal = IsEqual;
@@ -231,7 +233,30 @@
     PAGED_CODE();
 
     if (NewToken->TokenType != TokenPrimary) return(STATUS_BAD_TOKEN_TYPE);
-    if (NewToken->TokenInUse) return(STATUS_TOKEN_ALREADY_IN_USE);
+    if (NewToken->TokenInUse)
+    {
+        BOOLEAN IsEqual;
+        NTSTATUS Status;
+
+        /* Maybe we're trying to set the same token */
+        OldToken = PsReferencePrimaryToken(Process);
+        if (OldToken == NewToken)
+        {
+            /* So it's a nop. */
+            PsDereferencePrimaryToken(OldToken);
+            return STATUS_SUCCESS;
+        }
+
+        Status = SepCompareTokens(OldToken, NewToken, &IsEqual);
+        if (!NT_SUCCESS(Status))
+        {
+            PsDereferencePrimaryToken(OldToken);
+            return Status;
+        }
+
+        PsDereferencePrimaryToken(OldToken);
+        return IsEqual ? STATUS_SUCCESS : STATUS_TOKEN_ALREADY_IN_USE;
+    }
 
     /* Mark new token in use */
     NewToken->TokenInUse = 1;