When getting the value from FileSystemInfo.LastAccessTime, it will internally convert
the FILETIME value from Windows API to a DateTime. If the value represents a date after
12/31/9999 it will throw ArgumentOutOfRangeException, because this is not supported by
DateTime. Some file systems seem to set strange access timestamps on files, which
may lead to this exception being thrown. Since the last accessed timestamp is not
important such exceptions are now just silently ignored.
Fix SystemIOWindows.PathGetFullPath per review comments.
Add unit tests for SystemIOWindows.PathGetFullPath and SystemIOWindows.PrefixWithUNC. Also, fix a bug in the SystemIOWindows.PrefixWithUNC change that was exposed by these new unit tests.
In BackendToolTests, remove unused [Setup] and [TearDown] methods.
The handling of relative paths in SystemIOWindows was broken by changes for #4256.
Change SystemIOWindows.PrefixWithUNC to only prefix paths with `\\?\` when they can be prefixed; i.e., only prefix paths that are fully qualified and that don't contain relative path components like `.` or `..`. This way, relative paths passed to SystemIOWindows methods work correctly again. Also support network paths specified using forward slashes; e.g., `//example.com/share/foo.txt`.
Simplify SystemIOWindows.GetFullPath since Path.GetFullPath will honor `\\?\` prefixes and can replace forward slashes with backslashes, etc.
Copy and adapt source for Path.IsPathFullyQualified from https://github.com/dotnet/runtime, which is MIT licensed.
Add unit test for Duplicati.CommandLine.BackendTool to validate the fix.
This fixes#4632.
Change SystemIOWindows.PathGetFullPath() to convert forward
slashes to backslashes.
Change Duplicati.UnitTest.BasicSetupHelper.ZipFileExtractToDirectory()
to rely on slash fix-ups.
Even in .NET 4.6.2
`System.IO.Compression.ZipFile.ExtractToDirectory()` cannot handle
long paths. Replace call to
`System.IO.Compression.ZipFile.ExtractToDirectory()` with an
equivalent that extracts files to a temporary location and uses I/O
functions that support long paths to move them to their final
location.
In CommandLineOperationsTests.cs, use ISystemIO functions to handle
potentially long paths.
Add a fix to RecoveryTool for long paths that was missed by #4258.
This fixes#3863.
Fix pull request string comparisons in SystemIOWindows.cs to use
StringComparison.Ordinal.
Fix pull request to use SystemIO.IO_WIN.PathCombine() in
WindowsSnapshot.cs.
Allow historically problematic Windows paths (i.e., files or
directories that end in a dot or a space) to be backed up with
Duplicati in Windows.
This fixes#3839.
