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https://issues.apache.org/jira/browse/COMPRESS-380?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16314726#comment-16314726
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Dawid Weiss edited comment on COMPRESS-380 at 1/6/18 4:19 PM:
--------------------------------------------------------------
I isolated a smaller example file that still fails at runtime, with a more
complex exception. Total commander (info-zip) decompresses this file just fine
(it's a png file) so it has to be something in the decoding routine.
https://github.com/apache/commons-compress/pull/58
{code}
java.lang.IllegalStateException: Attempt to read beyond memory: dist=5955
at
org.apache.commons.compress.compressors.deflate64.HuffmanDecoder$DecodingMemory.recordToBuffer(HuffmanDecoder.java:471)
at
org.apache.commons.compress.compressors.deflate64.HuffmanDecoder$HuffmanCodes.decodeNext(HuffmanDecoder.java:292)
at
org.apache.commons.compress.compressors.deflate64.HuffmanDecoder$HuffmanCodes.read(HuffmanDecoder.java:264)
at
org.apache.commons.compress.compressors.deflate64.HuffmanDecoder.decode(HuffmanDecoder.java:165)
at
org.apache.commons.compress.compressors.deflate64.Deflate64CompressorInputStream.read(Deflate64CompressorInputStream.java:77)
at java.io.InputStream.read(InputStream.java:101)
at
org.apache.commons.compress.compressors.deflate64.Deflate64BugTest.readBeyondMemoryException(Deflate64BugTest.java:23)
{code}
was (Author: dweiss):
I isolated a smaller example file that still fails at runtime, with a more
complex exception. Total commander (info-zip) decompresses this file just fine
(it's a png file) so it has to be something in the decoding routine.
https://github.com/apache/commons-compress/pull/58
> Support for ENHANCED_DEFLATED (Deflate64) in ZIP files
> ------------------------------------------------------
>
> Key: COMPRESS-380
> URL: https://issues.apache.org/jira/browse/COMPRESS-380
> Project: Commons Compress
> Issue Type: New Feature
> Reporter: Dawid Weiss
> Fix For: 1.16
>
> Attachments: archive-deflate.zip, archive-deflate64.zip, archive.zip,
> archive64.zip, compress-380.diff, hello.world, input2
>
>
> Some of the (large) ZIP files we try to process currently will throw this:
> {code}
> UnsupportedZipFeatureException: unsupported feature method
> 'ENHANCED_DEFLATED'
> {code}
> which is a bummer since JDK's implementation also doesn't support Deflate64.
> This seems to be PKWare's extensions, although code to decrypt it exists in
> zlib (and is appropriately licensed, I believe).
> https://github.com/madler/zlib/tree/master/contrib/infback9
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