C# SharpZipLib extract .TGZ NotSupportedException

Question

I'm new to programming so please be patient.

I am currently developing a small Program in Visual C# 2010 Express, .NET Framework 4.0, which starts a Script on a Linux Machine (what creates the File /tmp/logs.tgz), downloads the File and then I want to extract it. Running the Script and downloading the File via Renci.SshNet works flawlessly. But when I want to extract it, it gives me an Error "NotSupportedException" my Filepath Format is incorrect (which is not the case, I think?). I copy and pasted the Code directly from here (Simple full extract from a TGZ (.tar.gz)) and edited it for my Needs:

        using System.IO;
        using System.IO.Compression;
        using ICSharpCode.SharpZipLib.GZip;
        using ICSharpCode.SharpZipLib.Tar;
        //it executed the Script and created the file on the Linux Machine /tmp/logs.tgz
        //now I want to download it

        string myTime = DateTime.Now.ToString("yyyyMMdd");
        var pathWithEnv = (@"%USERPROFILE%\Desktop\logs" + myTime + ".tgz");
        var filePath = Environment.ExpandEnvironmentVariables(pathWithEnv);
        string localFile = filePath;

        //then downloads /tmp/logs.tgz to ..\Desktop\logs+ myTime +.tgz
        //everything great until now. here I want to extract .TGZ:

        var pathWithEnv2 = (@"%USERPROFILE%\Desktop\logs" + myTime);
        var fileDir = Environment.ExpandEnvironmentVariables(pathWithEnv2);
        string localDir = fileDir;

        Stream inStream = File.OpenRead(localFile);
        Stream gzipStream = new GZipInputStream(inStream);

        TarArchive tarArchive = TarArchive.CreateInputTarArchive(gzipStream);
        //ERROR OCCURS HERE:
        tarArchive.ExtractContents(localDir);

        tarArchive.Close();
        gzipStream.Close();
        inStream.Close();

I even tried to set the localFile and localDir string without the EnviromentVariable, but that didnt help. I tried: - download and extract it directly on C:\ (or on a mapped Network Drive U:) to prevent too long filenames (which should not be the case as it should never get longer than 86 characters). - string = @"C:..\logs", string = "C:\..\logs", string = @"C:..\logs\", etc. - tried it without myTime - using ICSharpCode.SharpZipLib.Core;

I did a MessageBox.Show(localDir); before the tarArchive.ExtractContents(localDir); and it showed "C:\Users\Baumann\Desktop\logs20140530" which is correct, thats the Directory I want to extract it to. Even creating the Directory before executing it doesn't help.

I also created a new Project with just one button which should start the Extraction and the same error occurs.

I tried, doing it separately, first extract the GZip and then the .tar, but it also gives me the same Error when extracting the GZip (using ICSharpCode.SharpZipLib.Core; of course).

What drives me even more crazy about it, is, that it starts to extract it, but not everything, before it fails. And always the same Files, whats not clear for me why these and why not the others.

I'm on Windows 8.1, using SharpZipLib 0.86.0.518, downloaded directly from the Website.

Thanks in advance.

Answer 1

well, I finally fixed the Problem. The Linux machine is creating a file which includes the MAC-Adress and since Windows can't handle ":" in a Filename, it crashes. I am now extracting file by file and checking each file for ":" and replacing it with "_", works flawlessly.