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From "Torsten Krah (JIRA)" <j...@apache.org>
Subject [jira] [Created] (TIKA-913) MagicMime detection of msdos executables does not work
Date Mon, 07 May 2012 13:24:50 GMT
Torsten Krah created TIKA-913:
---------------------------------

             Summary: MagicMime detection of msdos executables does not work
                 Key: TIKA-913
                 URL: https://issues.apache.org/jira/browse/TIKA-913
             Project: Tika
          Issue Type: Bug
          Components: mime
    Affects Versions: 1.1
         Environment: Linux, JDK 1.6
            Reporter: Torsten Krah


Mime detection does not work as expected (at least from me) in contrast e.g. to sourceforge
mime-util detection or "file" utility.
For example using putty ms-dos executable does result in wrong detections:

krah@sf050:~$ java -jar /tmp/tika-app-1.1.jar --detect /tmp/putty
application/octet-stream
krah@sf050:~$ java -jar /tmp/tika-app-1.1.jar --detect /tmp/putty.jpg
image/jpeg
krah@sf050:~$ java -jar /tmp/tika-app-1.1.jar --detect /tmp/putty.exe
application/x-msdownload


Its everytime the same binary resource only with different names.
In contrast using "file" does output:

krah@sf050:~$ file /tmp/putty
/tmp/putty: PE32 executable for MS Windows (GUI) Intel 80386 32-bit
krah@sf050:~$ file /tmp/putty.jpg
/tmp/putty.jpg: PE32 executable for MS Windows (GUI) Intel 80386 32-bit
krah@sf050:~$ file /tmp/putty.exe
/tmp/putty.exe: PE32 executable for MS Windows (GUI) Intel 80386 32-bit

So magic mime detection should be able to detect that this is actually an executable.

E.g. for a PDF it does work:

krah@sf050:~$ java -jar /tmp/tika-app-1.1.jar --detect /tmp/print.pdf
application/pdf
krah@sf050:~$ java -jar /tmp/tika-app-1.1.jar --detect /tmp/print
application/pdf
krah@sf050:~$ java -jar /tmp/tika-app-1.1.jar --detect /tmp/print.jpg 
application/pdf

Here Tika detects what is expected.


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