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SharpDevelop Community » IC#Code Projects » SharpZipLib » Library cannot extract this entry. Version required is (16660)

Library cannot extract this entry. Version required is (16660)

Last post 08-22-2008 8:18 AM by Devaraja. 9 replies.

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08-07-2008 5:04 PM

Devaraja
Joined on 08-07-2008
Posts 6

Library cannot extract this entry. Version required is (16660)

Reply Contact

Hi,

I am getting above error while trying to unzip the files using SharpZipLib dll. it works for some zipfiles and for some zipfiles its throwing the above error. i am using the latest dll version 0.85.4.369, still getting the above error.

using (ZipInputStream s = new ZipInputStream(File.OpenRead(ZipFilePath)))

{

ZipEntry theEntry;

while ((theEntry = s.GetNextEntry()) != null)

{

string directoryName = Path.GetDirectoryName(ZipFilePath);

string fileName = Path.GetFileName(theEntry.Name);

if (fileName != String.Empty)

{

sRet = Path.Combine(directoryName, fileName);using (FileStream streamWriter = File.Create(sRet))

{

//int size = 2048;

//byte[ data = new byte[2048];

int size = 4096;

byte[ data = new byte[4096];

while (true)

{

size = s.Read(data, 0, data.Length);

if (size > 0)

{

streamWriter.Write(data, 0, size);

}

else

{

break;

}

Plz Can anybody help?

Thanks

Dev

Filed under: Using #ZipLib, File extraction, #ZipLib feature request, ZipInputStream, #ZipLib, Zip64, Zip files for download, Zip, Zip password protection, zip ICSharpCode.SharpZipLib SharpZipLib, FastZip, ICSharpZip, ZipEntry, How i can test true password zip file ?, PDF spec 1.7 /FLATEDECODE SharpZipLib, #ZipLib gzip, ZipInputStream Read

08-08-2008 6:31 AM In reply to

JohnReilly
Joined on 08-23-2005
Posts 1.337

Re: Library cannot extract this entry. Version required is (16660)

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That seems a bit wonky. Version required should be like 45 or something. Are the files valid zip files? If they are then something is awry in that lot.

hth, -jr-

08-11-2008 7:39 AM In reply to

Devaraja
Joined on 08-07-2008
Posts 6

Re: Library cannot extract this entry. Version required is (16660)

Reply Contact

John,

Yes, the files are valid zip files, i can able to extract from windows manually but not thro code, while doing am getting above error.

I downloaded the source and set VERSION_MADE_BY to 16660; in ZipConstants.cs class and added (Version == 16660) in version ckecking in ZIpEntry class. Its working now but am not sure was that the correct way.

If anybody find correct fix for this, plz let me know......

Thank you John.....

Thanks & Regards

Devaraja

Filed under: Using #ZipLib, File extraction, ZipInputStream, #ZipLib, ZipException, Zip64, sharpZipLib, Zip, sharpziplib list files getnextentry cf, Store file inside directory in ZIP file, zip ICSharpCode.SharpZipLib SharpZipLib, zlib dwf extraction, FastZip, ICSharpZip, ZipFile, extract, ZipEntry, zlib, ziped file, How i can test true password zip file ?, SharpZipLib stream gzip httpresponse, zip read only zipentry, #ZipLib gzip, ZipInputStream Read

08-11-2008 12:11 PM In reply to

JohnReilly
Joined on 08-23-2005
Posts 1.337

Re: Library cannot extract this entry. Version required is (16660)

Reply Contact

Hi,

In that case the zip file is well formed apart from the version required being wrong. Do you know what program was used to create the archives?

I also wonder if there are any differences between the local and central headers that allow this to work. It would be interesting to see the output from AEX or similar program (http://www.geocities.com/licamft/) showing the two sets of headers.

Cheers, -jr-

08-11-2008 12:53 PM In reply to

Devaraja
Joined on 08-07-2008
Posts 6

Re: Library cannot extract this entry. Version required is (16660)

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The zip files are created by dot net application using ZipForge dll....

Thanks

Dev

08-20-2008 10:10 PM In reply to

JohnReilly
Joined on 08-23-2005
Posts 1.337

Re: Library cannot extract this entry. Version required is (16660)

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Is there a small example we can have a look at anywhere?

08-21-2008 7:38 AM In reply to

Devaraja
Joined on 08-07-2008
Posts 6

Re: Library cannot extract this entry. Version required is (16660)

Reply Contact

hi,

I downloaded the source for the version 0.85.4.369 and changed the code in Zipentry.cs like below..

if (versionToExtract != 0) {

//return versionToExtract; // original

return versionToExtract & 0xff; // changed

In the above code 16660 is converted into 20 and it works, means unzips properly before wasn't happening ......

am not sure wether it affects other functionality.

But the problem is, am also zipping 1 text file from the above fix and sending it to php page. The php page returns error message like

Warning: fopen(20080821105758882.txt) [<a href='function.fopen'>function.fopen</a>]: failed to open stream: No such file or directory in /u2/doc/data_capture.php on line 425

Cannot open file

This is happening after the above change in code i have made.

I am really confused.... plz help me out...

Thanks

Dev

Filed under: ZipInputStream, #ZipLib, ZipException, Zip64, sharpZipLib, FastZip Append, version required, zip ICSharpCode.SharpZipLib SharpZipLib, ICSharpZip, ZipFile, ZipEntry, zlib, SharpZipLib stream gzip httpresponse, Urgent, #ZipLib gzip, ZipInputStream Read

08-21-2008 8:01 AM In reply to

Devaraja
Joined on 08-07-2008
Posts 6

Re: Library cannot extract this entry. Version required is (16660)

Reply Contact

Hey,

If I removed that fix also its happening, means php page is throughing error for the files zipped by SharpZipLib dll version 0.85.4.369.

Plz suggest me the solution.....

Let me know if you need anything additional......

Thanx

Dev

08-21-2008 9:31 PM In reply to

JohnReilly
Joined on 08-23-2005
Posts 1.337

Re: Library cannot extract this entry. Version required is (16660)

Reply Contact

Hi,

Is there a small example file that we can look at?

Also note that there is a new version of the library which has a pile of fixes although I doubt it will handle this problem.

Cheers, -jr-

08-22-2008 8:18 AM In reply to

Devaraja
Joined on 08-07-2008
Posts 6

Re: Library cannot extract this entry. Version required is (16660)

Reply Contact

Hi John,

I am attaching the sample file, its created with the version 0.85.4.369... This file(20080822105336749.zip) is not unzipping by php page....

am also attaching the the file(6071957.zip) which is not unzipping by Sharpziplib.....

Hey replied to notification i recieved to my mail, am able to send across the file (607195) but my gmail is not allowing to send the other file 920080822105336749.zip).. So if provide ur mailid i can sent to you through my rediffmail id.....

Thanks

Dev

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