[cros] Add *Safe methods to the ownership API

chromeos_login_helpers.h

Index: chromeos_login_helpers.h
diff --git a/chromeos_login_helpers.h b/chromeos_login_helpers.h
new file mode 100644
index 0000000000000000000000000000000000000000..d19c269a88e501441bac99d4379cca6b8414cd45
--- /dev/null
+++ b/chromeos_login_helpers.h
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+// Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include <vector>
+
+#include <base/basictypes.h>
+#include <chromeos/dbus/dbus.h>
+#include <glib.h>
+
+namespace chromeos {  // NOLINT
+
+struct CryptoBlob;
+struct Property;
+struct UserList;
+
+class ChromeOSLoginHelpers {
+ public:
+  static dbus::Proxy CreateProxy();
+  static uint8* NewBufferCopy(const uint8* x, int len);
+  static GArray* CreateGArrayFromBytes(const uint8* in, const int in_len);
+  static bool CheckWhitelistHelper(const char* email, GArray** sig);
+  static bool EnumerateWhitelistedHelper(gchar*** whitelisted);
+  static bool RetrievePropertyHelper(const char* name,
+                                     gchar** value,
+                                     GArray** sig);
+  static bool SetOwnerKeyHelper(GArray* key_der);
+  static bool StorePropertyHelper(const char* name,
+                                  const char* value,
+                                  GArray* sig);
+  static bool WhitelistOpHelper(const char* op,
+                                const char* email,
+                                const std::vector<uint8>& signature);
+  // Constructors, Destructors for useful structs
+  static CryptoBlob* CreateCryptoBlob(GArray* in);
+  static Property* CreateProperty(const char* name,
+                                  const gchar* value,
+                                  GArray* sig);
+  static UserList* CreateUserList(const char* const* users);
+  static void FreeCryptoBlob(CryptoBlob* blob);
+  static void FreeProperty(Property* property);
+  static void FreeUserList(UserList* userlist);
+
+ private:
+  ChromeOSLoginHelpers();
+  ~ChromeOSLoginHelpers();
+  DISALLOW_COPY_AND_ASSIGN(ChromeOSLoginHelpers);
+};
+
+}  // namespace chromeos