Restrict users to upload zip file with folder inside

Question

I have a file upload control. I restrict users to upload only zip files. the namespace i use is Ionic.Zip; I also want check if that zip file has a folder inside. I have to restrict the users not upload a zipfile with a folder inside. I could check how many files inside zip file like

using (ZipFile zip = ZipFile.Read(file_path))
{
    if (zip.Count < 5)
    {
    }

I do not know how to check for a folder inside

Anyone can help me please. thanks in advance

Have a look at [How to list the contents of a .zip folder in c#?](http://stackoverflow.com/questions/307774/how-to-list-the-contents-of-a-zip-folder-in-c) — huMpty duMpty, Apr 07 '14 at 11:03
CAn't you extract it to guid folder and check Directories count ? — Royi Namir, Apr 07 '14 at 11:05

score 2 · Answer 1 · answered Apr 07 '14 at 11:11

2

You can iterate on your zip object's ZipEntries - ZipEntry object contains IsDirectory property.

foreach(var entry in zip)
{
    if(entry.IsDirectory)
    {
        //your stuff
    }
}

answered Apr 07 '14 at 11:11

Tarec

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This too did no work . entry.isdirectory shows false – Shanna Apr 07 '14 at 11:23

Royi Namir · Accepted Answer · 2014-04-07T11:55:05.333

2

void Main()
{
var isGood=false;

    using (ZipFile zip = new ZipFile(@"c:\\1.zip"))
 {
     for (var i=0;i<zip.Count;i++)
     if (zip[i].Attributes==FileAttributes.Directory) 
      {
       isGood=false;
       break;
      }

 }

 if (isGood) Console.WriteLine ("ok");
 else
 Console.WriteLine ("error");
}

// Define other methods and classes here

edit :

there's seems to be a problem with the way you created this zip file.

I extracted the files from the file you sent me and created new zip : (named 3.zip):

enter image description here

and as you can see - the code works :

enter image description here

so I guess the dll is not powerful enough to recognize edge format

edited Apr 07 '14 at 11:55

answered Apr 07 '14 at 11:12

Royi Namir

144,742
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468
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This did not work. Even though I have a folder inside, it shows false – Shanna Apr 07 '14 at 11:23
can i attach the zip file here? sorry but i do not know how – Shanna Apr 07 '14 at 11:26
@Shanna send it to namir [dott] 78 [at] gmail – Royi Namir Apr 07 '14 at 11:27
I have sent the file. – Shanna Apr 07 '14 at 11:44
Thank you so much. But wat do i do to restrict the user not to upload a folder inside? – Shanna Apr 07 '14 at 12:04
@Shanna you can't restrict it on the client side ( cross browserly) , but you can upload it to the server and check it there and return a notification notice if it fails. – Royi Namir Apr 07 '14 at 12:05

Restrict users to upload zip file with folder inside

2 Answers2

edit :