Don't create temp file in save destination folder when sandboxed

In a sandboxed environment we don't want to attempt to create
temporary files in the same directory where the user has selected an
output file to be stored. The sandboxed process has permission only to
create the specifically named output file that the user chose in the
system file dialog in that directory.

Change-Id: I65274b4c433bd66b436429bea4b287a0505b72c9
(cherry picked from commit 54c2e3c8)
Reviewed-on: https://gerrit.libreoffice.org/63918
Tested-by: Jenkins
Reviewed-by: Tor Lillqvist <tml@collabora.com>

sfx2/source/doc/docfile.cxx

-/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
 /*
  * This file is part of the LibreOffice project.
  *
@@ -3506,6 +3506,11 @@ OUString GetLogicBase(std::unique_ptr<SfxMedium_Impl> const & pImpl)
 {
     OUString aLogicBase;
 
+// In a sandboxed environment we don't want to attempt to create temporary files in the same
+// directory where the user has selected an output file to be stored. The sandboxed process has
+// permission only to create the specifically named output file in that directory.
+#if !HAVE_FEATURE_MACOSX_SANDBOX
+
     if (comphelper::isFileUrl(pImpl->m_aLogicName) && !pImpl->m_pInStream)
     {
         // Try to create the temp file in the same directory when storing.
@@ -3521,6 +3526,8 @@ OUString GetLogicBase(std::unique_ptr<SfxMedium_Impl> const & pImpl)
         // Embedded objects would mean a special base, ignore that.
         aLogicBase.clear();
 
+#endif // !HAVE_FEATURE_MACOSX_SANDBOX
+
     return aLogicBase;
 }
 }