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Ignore "Compressed size mismatch" error from Xceed #41

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dgrunwald opened this issue Dec 29, 2013 · 1 comment
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Ignore "Compressed size mismatch" error from Xceed #41

dgrunwald opened this issue Dec 29, 2013 · 1 comment
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enhancement Feature request or other improvements of existing functionality
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1.0

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@dgrunwald
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SD-1801, originally created on 12/20/2010 02:06:14 by David Pierson

When a password is applied, Xceed is incorrectly setting values in the
local header. This results in a “Compressed size mismatch between
central header(2399) and local header(0)” exception in
ZipFile.TestLocalHeader.

Sample code in ZipFile.cs at line 1259 ...

if (compressedSize != entry.CompressedSize &&
                        compressedSize != 0xFFFFFFFF && compressedSize
!= -1**&& compressedSize != 0**) {
                        throw new ZipException(
                            string.Format("Compressed size mismatch
between central header({0}) and local header({1})",
                            entry.CompressedSize, compressedSize));
                    }

Forum thread:

http://community.sharpdevelop.net/forums/t/12404.aspx
"Errors unzipping zip files created using Xceed V4.0"
bbenoist added a commit to bbenoist/SharpZipLib that referenced this issue Apr 27, 2015
@bbenoist
Closes icsharpcode#41 - Do not fail when local header compressed size…
582cb3f 
… equals to 0

As extracting some "valid" ZIP files was not possible...

Example ZIP file failing before the fix:
http://www.cmake.org/files/v3.2/cmake-3.2.2-win32-x86.zip

Also related to:
* icsharpcode#41
* http://community.sharpdevelop.net/forums/t/12404.aspx
This was referenced Apr 27, 2015
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@McNeight McNeight mentioned this issue Mar 2, 2016
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@McNeight McNeight self-assigned this Apr 14, 2016
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McNeight commented May 9, 2016

With commit 3bd09a7 from both PR #18 and #93, this issue is now fixed.

-Neil

@McNeight McNeight closed this as completed May 9, 2016
@icsharpcode icsharpcode locked and limited conversation to collaborators May 9, 2016
@McNeight McNeight modified the milestone: 1.0 May 17, 2016
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