Merge pull request #133 from gnustep/NSSecureCoding_branch

Start implementing some secure coding methods.

Headers/Foundation/NSKeyedArchiver.h

@@ -87,6 +87,18 @@ extern "C" {
  */
 + (NSData*) archivedDataWithRootObject: (id)anObject;
 
+
+#if OS_API_VERSION(MAC_OS_X_VERSION_10_13,GS_API_LATEST)
+/**
+ * Encodes anObject and returns the resulting data object.  Allows
+ * secure coding if specified.  Returns an error if an object 
+ * violates secure coding rules.
+ */
++ (NSData *) archivedDataWithRootObject: (id)anObject
+                  requiringSecureCoding: (BOOL)requiresSecureCoding
+                                  error: (NSError **)error;
+#endif
+
 /**
  * Encodes anObject and writes the resulting data ti aPath.
  */

Source/NSKeyedArchiver.m

@@ -430,16 +430,18 @@ static NSDictionary *makeReference(unsigned ref)
 
 @implementation	NSKeyedArchiver
 
-/*
- * When I tried this on MacOS 10.3 it encoded the object with the key 'root',
- * so this implementation does the same.
- */
 + (NSData *) archivedDataWithRootObject: (id)anObject
+                  requiringSecureCoding: (BOOL)requiresSecureCoding
+                                  error: (NSError **)error
+{
+  NSData *d = nil;
+
+  if (requiresSecureCoding == NO)
     {
       NSMutableData	*m = nil;
       NSKeyedArchiver	*a = nil;
-  NSData		*d = nil;
 
+      error = NULL;
       NS_DURING
         {
           m = [[NSMutableData alloc] initWithCapacity: 10240];
@@ -456,10 +458,23 @@ static NSDictionary *makeReference(unsigned ref)
           DESTROY(a);
           [localException raise];
         }
-  NS_ENDHANDLER
+      NS_ENDHANDLER;
+    }
+
   return AUTORELEASE(d);
 }
 
+/*
+ * When I tried this on MacOS 10.3 it encoded the object with the key 'root',
+ * so this implementation does the same.
+ */
++ (NSData*) archivedDataWithRootObject: (id)anObject
+{
+  return [self archivedDataWithRootObject: anObject
+                    requiringSecureCoding: NO
+                                    error: NULL];
+}
+
 + (BOOL) archiveRootObject: (id)anObject toFile: (NSString*)aPath
 {
   NSAutoreleasePool	*pool = [NSAutoreleasePool new];