Error Invalid Compressed Data To Inflate Unzip Linux

Error Invalid Compressed Data To Inflate Unzip Linux

Error Invalid Compressed Data To Inflate Unzip Linux https://blltly.com/2t848Y

$ file AS2_Captures.zipAS2_Captures.zip: Zip archive data, at least v2.0 to extract$ unzip AS2_Captures.zip Archive: AS2_Captures.zip End-of-central-directory signature not found. Either this file is not a zipfile, or it constitutes one disk of a multi-part archive. In the latter case the central directory and zipfile comment will be found on the last disk(s) of this archive.unzip: cannot find zipfile directory in one of AS2_Captures.zip or AS2_Captures.zip.zip, and cannot find AS2_Captures.zip.ZIP, period.$But I was able to uncompress the zip file and extract data from it usingthe Java archive (jar) utilityon the system, though it also displayed an error message.

[root@backup auth-prod]# unzip backup-20200619-0420.zipArchive: backup-20200619-0420.zip inflating: cq-author-p4502.jarerror: invalid zip file with overlapped components (possible zip bomb)[root@backup auth-prod]#

By default, the zlib methods will throw an error when decompressingtruncated data. However, if it is known that the data is incomplete, orthe desire is to inspect only the beginning of a compressed file, it ispossible to suppress the default error handling by changing the flushingmethod that is used to decompress the last chunk of input data:

This will not change the behavior in other error-throwing situations, e.g.when the input data has an invalid format. Using this method, it will not bepossible to determine whether the input ended prematurely or lacks theintegrity checks, making it necessary to manually check that thedecompressed result is valid.

The following code fragment demonstrates a trivial compression and decompression of a string using Deflater and Inflater. try { // Encode a String into bytes String inputString = "blahblahblah??"; byte[] input = inputString.getBytes("UTF-8"); // Compress the bytes byte[] output = new byte[100]; Deflater compresser = new Deflater(); compresser.setInput(input); compresser.finish(); int compressedDataLength = compresser.deflate(output); // Decompress the bytes Inflater decompresser = new Inflater(); decompresser.setInput(output, 0, compressedDataLength); byte[] result = new byte[100]; int resultLength = decompresser.inflate(result); decompresser.end(); // Decode the bytes into a String String outputString = new String(result, 0, resultLength, "UTF-8"); } catch(java.io.UnsupportedEncodingException ex) { // handle } catch (java.util.zip.DataFormatException ex) { // handle } See Also:DeflaterConstructor SummaryConstructors Constructor and DescriptionInflater()Creates a new decompressor.Inflater(boolean nowrap)Creates a new decompressor.Method SummaryMethods Modifier and TypeMethod and Descriptionvoidend()Closes the decompressor and discards any unprocessed input.protected voidfinalize()Closes the decompressor when garbage is collected.booleanfinished()Returns true if the end of the compressed data stream has been reached.intgetAdler()Returns the ADLER-32 value of the uncompressed data.longgetBytesRead()Returns the total number of compressed bytes input so far.longgetBytesWritten()Returns the total number of uncompressed bytes output so far.intgetRemaining()Returns the total number of bytes remaining in the input buffer.intgetTotalIn()Returns the total number of compressed bytes input so far.intgetTotalOut()Returns the total number of uncompressed bytes output so far.intinflate(byte[] b)Uncompresses bytes into specified buffer.intinflate(byte[] b, int off, int len)Uncompresses bytes into specified buffer.booleanneedsDictionary()Returns true if a preset dictionary is needed for decompression.booleanneedsInput()Returns true if no data remains in the input buffer.voidreset()Resets inflater so that a new set of input data can be processed.voidsetDictionary(byte[] b)Sets the preset dictionary to the given array of bytes.voidsetDictionary(byte[] b, int off, int len)Sets the preset dictionary to the given array of bytes.voidsetInput(byte[] b)Sets input data for decompression.voidsetInput(byte[] b, int off, int len)Sets input data for decompression.Methods inherited from class java.lang.Objectclone, equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, waitConstructor DetailInflaterpublic Inflater(boolean nowrap)Creates a new decompressor. If the parameter 'nowrap' is true then the ZLIB header and checksum fields will not be used. This provides compatibility with the compression format used by both GZIP and PKZIP. Note: When using the 'nowrap' option it is also necessary to provide an extra "dummy" byte as input. This is required by the ZLIB native library in order to support certain optimizations.Parameters:nowrap - if true then support GZIP compatible compressionInflaterpublic Inflater()Creates a new decompressor.Method DetailsetInputpublic void setInput(byte[] b, int off, int len)Sets input data for decompression. Should be called whenever needsInput() returns true indicating that more input data is required.Parameters:b - the input data bytesoff - the start offset of the input datalen - the length of the input dataSee Also:needsInput()setInputpublic void setInput(byte[] b)Sets input data for decompression. Should be called whenever needsInput() returns true indicating that more input data is required.Parameters:b - the input data bytesSee Also:needsInput()setDictionarypublic void setDictionary(byte[] b, int off, int len)Sets the preset dictionary to the given array of bytes. Should be called when inflate() returns 0 and needsDictionary() returns true indicating that a preset dictionary is required. The method getAdler() can be used to get the Adler-32 value of the dictionary needed.Parameters:b - the dictionary data bytesoff - the start offset of the datalen - the length of the dataSee Also:needsDictionary(), getAdler()setDictionarypublic void setDictionary(byte[] b)Sets the preset dictionary to the given array of bytes. Should be called when inflate() returns 0 and needsDictionary() returns true indicating that a preset dictionary is required. The method getAdler() can be used to get the Adler-32 value of the dictionary needed.Parameters:b - the dictionary data bytesSee Also:needsDictionary(), getAdler()getRemainingpublic int getRemaining()Returns the total number of bytes remaining in the input buffer. This can be used to find out what bytes still remain in the input buffer after decompression has finished.Returns:the total number of bytes remaining in the input bufferneedsInputpublic boolean needsInput()Returns true if no data remains in the input buffer. This can be used to determine if #setInput should be called in order to provide more input.Returns:true if no data remains in the input bufferneedsDictionarypublic boolean needsDictionary()Returns true if a preset dictionary is needed for decompression.Returns:true if a preset dictionary is needed for decompressionSee Also:setDictionary(byte[], int, int)finishedpublic boolean finished()Returns true if the end of the compressed data stream has been reached.Returns:true if the end of the compressed data stream has been reachedinflatepublic int inflate(byte[] b, int off, int len) throws DataFormatExceptionUncompresses bytes into specified buffer. Returns actual number of bytes uncompressed. A return value of 0 indicates that needsInput() or needsDictionary() should be called in order to determine if more input data or a preset dictionary is required. In the latter case, getAdler() can be used to get the Adler-32 value of the dictionary required.Parameters:b - the buffer for the uncompressed dataoff - the start offset of the datalen - the maximum number of uncompressed bytesReturns:the actual number of uncompressed bytesThrows:DataFormatException - if the compressed data format is invalidSee Also:needsInput(), needsDictionary()inflatepublic int inflate(byte[] b) throws DataFormatExceptionUncompresses bytes into specified buffer. Returns actual number of bytes uncompressed. A return value of 0 indicates that needsInput() or needsDictionary() should be called in order to determine if more input data or a preset dictionary is required. In the latter case, getAdler() can be used to get the Adler-32 value of the dictionary required.Parameters:b - the buffer for the uncompressed dataReturns:the actual number of uncompressed bytesThrows:DataFormatException - if the compressed data format is invalidSee Also:needsInput(), needsDictionary()getAdlerpublic int getAdler()Returns the ADLER-32 value of the uncompressed data.Returns:the ADLER-32 value of the uncompressed datagetTotalInpublic int getTotalIn()Returns the total number of compressed bytes input so far. Since the number of bytes may be greater than Integer.MAX_VALUE, the getBytesRead() method is now the preferred means of obtaining this information.

As noted above, the -P option may be used to supply a password on the command line, but at a cost in security. The preferred decryption method is simply to extract normally; if a zipfile member is encrypted, unzip will prompt for the password without echoing what is typed. unzip continues to use the same password as long as it appears to be valid, by testing a 12-byte header on each file. The correct password will always check out against the header, but there is a 1-in-256 chance that an incorrect password will as well. (This is a security feature of the PKWARE zipfile format; it helps prevent brute-force attacks that might otherwise gain a large speed advantage by testing only the header.) In the case that an incorrect password is given but it passes the header test anyway, either an incorrect CRC will be generated for the extracted data or else unzip will fail during the extraction because the ``decrypted'' bytes do not constitute a valid compressed data stream. 2b1af7f3a8