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From "Tim Allison (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (TIKA-2727) Parsing and detect mime type of XML file stuck in infinite loop
Date Mon, 24 Sep 2018 20:43:00 GMT

    [ https://issues.apache.org/jira/browse/TIKA-2727?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16626439#comment-16626439
] 

Tim Allison commented on TIKA-2727:
-----------------------------------

Y. I can reproduce this on the 10th iteration single threaded.

> Parsing and detect mime type of XML file stuck in infinite loop
> ---------------------------------------------------------------
>
>                 Key: TIKA-2727
>                 URL: https://issues.apache.org/jira/browse/TIKA-2727
>             Project: Tika
>          Issue Type: Bug
>          Components: detector, parser
>    Affects Versions: 1.17
>            Reporter: Slava G
>            Assignee: Tim Allison
>            Priority: Major
>             Fix For: 1.19, 2.0.0
>
>         Attachments: 1_6e4b115e-7d2d-45f1-a842-35b5ad7ba559, 1_e3e13f0e-7085-4000-a558-5d255ed7a944.xml
>
>
> Hi,
> I'm trying to parse (even mime type detect) some XML file that it's not large, but kinda
tricky and my process hangs on :
> XMLStringBuffer.append(char[], int, int) line: not available 
> XMLStringBuffer.append(XMLString) line: not available 
> XMLNSDocumentScannerImpl(XMLScanner).scanAttributeValue(XMLString, XMLString, String,
boolean, String) line: not available 
> XMLNSDocumentScannerImpl.scanAttribute(XMLAttributesImpl) line: not available 
> XMLNSDocumentScannerImpl.scanStartElement() line: not available 
> XMLNSDocumentScannerImpl$NSContentDispatcher.scanRootElementHook() line: not available

> XMLNSDocumentScannerImpl$NSContentDispatcher(XMLDocumentFragmentScannerImpl$FragmentContentDispatcher).dispatch(boolean)
line: not available 
> XMLNSDocumentScannerImpl(XMLDocumentFragmentScannerImpl).scanDocument(boolean) line:
not available 
> XIncludeAwareParserConfiguration(XML11Configuration).parse(boolean) line: not available

> XIncludeAwareParserConfiguration(XML11Configuration).parse(XMLInputSource) line: not
available 
> SAXParserImpl$JAXPSAXParser(XMLParser).parse(XMLInputSource) line: not available 
> SAXParserImpl$JAXPSAXParser(AbstractSAXParser).parse(InputSource) line: not available

> SAXParserImpl$JAXPSAXParser.parse(InputSource) line: not available 
> SAXParserImpl.parse(InputSource, DefaultHandler) line: not available 
> SAXParserImpl(SAXParser).parse(InputStream, DefaultHandler) line: 195 
> XmlRootExtractor.extractRootElement(InputStream) line: 62 
> XmlRootExtractor.extractRootElement(byte[]) line: 42 
> MimeTypes.getMimeType(byte[]) line: 212 
> MimeTypes.detect(InputStream, Metadata) line: 494 
> DefaultDetector(CompositeDetector).detect(InputStream, Metadata) line: 84
>  
> Please see attached XML file.
> Please advise.
> Thanks



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