tdf#119050 sfx2 store: don't inherit temp file permissions when overwriting

The too aggressive error handling in commit
fb04780c (tdf#116117 sfx2 store: don't
inherit temp file permissions when renaming, 2018-03-12) means that if
the file is already there, then we don't try to stat() it; even if there
is no problem with that.

Change-Id: Ie0b9084064834e339bcae3ad7b4a35c54cb9d3c2
Reviewed-on: https://gerrit.libreoffice.org/59684Reviewed-by: Miklos Vajna <vmiklos@collabora.co.uk>
Tested-by: Jenkins

sfx2/qa/cppunit/test_misc.cxx

@@ -146,6 +146,14 @@ void MiscTest::testNoThumbnail()
     // umask requested so:
     CPPUNIT_ASSERT(aStatus.getAttributes() & osl_File_Attribute_GrpRead);
     CPPUNIT_ASSERT(aStatus.getAttributes() & osl_File_Attribute_OthRead);
+
+    // Now "save as" again to trigger the "overwrite" case.
+    xStorable->storeToURL(aTempFile.GetURL(), {});
+    CPPUNIT_ASSERT_EQUAL(osl::DirectoryItem::E_None, aItem.getFileStatus(aStatus));
+    // The following check used to fail in the past, result had temp file
+    // permissions.
+    CPPUNIT_ASSERT(aStatus.getAttributes() & osl_File_Attribute_GrpRead);
+
     umask(nMask);
 #endif
 

sfx2/source/doc/docfile.cxx

@@ -180,8 +180,10 @@ sal_uInt64 GetDefaultFileAttributes(const OUString& rURL)
     if (!comphelper::isFileUrl(rURL))
         return nRet;
 
+    // Make sure the file exists (and create it if not).
     osl::File aFile(rURL);
-    if (aFile.open(osl_File_OpenFlag_Create) != osl::File::E_None)
+    osl::File::RC nRes = aFile.open(osl_File_OpenFlag_Create);
+    if (nRes != osl::File::E_None && nRes != osl::File::E_EXIST)
         return nRet;
 
     aFile.close();