[TIKA-1487] Add mime for pre-OLE2 xls file

• Type: Improvement
• Status: Resolved
• Priority: Trivial
• Resolution: Fixed
• Fix Version/s: 1.7
• Assignee: Unassigned
• Reporter: Tim Allison
• Created: 25/Nov/14 16:50
• Updated: 27/Nov/14 14:49
• Resolved: 27/Nov/14 13:44

Description

On the govdocs1 corpus, nearly 91% of xls exceptions have this stacktrace:

Caused by: java.io.IOException: Invalid header signature; read 0x0010000000060409, expected 0xE11AB1A1E011CFD0 - Your file appears not to be a valid OLE2 document at org.apache.poi.poifs.storage.HeaderBlock.<init>(HeaderBlock.java:140) at org.apache.poi.poifs.storage.HeaderBlock.<init>(HeaderBlock.java:115) at org.apache.poi.poifs.filesystem.NPOIFSFileSystem.<init>(NPOIFSFileSystem.java:198) at org.apache.poi.poifs.filesystem.NPOIFSFileSystem.<init>(NPOIFSFileSystem.java:184) at org.apache.tika.parser.microsoft.OfficeParser.parse(OfficeParser.java:162) at org.apache.tika.parser.CompositeParser.parse(CompositeParser.java:242) ... 13 more

Excel is able to open the few files that I tried, and it looks like Excel thinks these are version 4.

On the POI user list, gagravarr identified this header as pre-OLE2 and asked that we add the mime to Tika so that we can handle appropriately. Test file soon to be attached.