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FileAnalysis: add custom libmagic database.

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- It's derived from the magic database of libmagic 5.14, but with most
  everything not related to mime types removed.

- The custom database is always used by default for mime detection, but
  the more verbose file type detection will fall back on the default
  libmagic installation's database.  The result is: mime type strings
  are now guaranteed to be consistent across platforms, but the verbose
  file type descriptions are not.

- The custom database gets installed in $prefix/share/bro/magic, and
  should even be extensible if files with new patterns are added inside
  the directory.

- The search path for the mime magic database can be controlled via
  BROMAGIC environment variable.

- Remove mime_desc field from ftp.log.

- Stop using the mime/file type canonifier with unit tests.

- libmagic >= 5.04 is now a requirement.
This commit is contained in:
Jon Siwek 2013-04-12 11:58:19 -05:00
parent b8c98b8bf7
commit 037d582b0e
106 changed files with 2951 additions and 174 deletions
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4
testing/btest/Baseline/scripts.base.frameworks.file-analysis.bifs.remove_action/get.out
View file

@ -2,8 +2,8 @@ FILE_NEW
Cx92a0ym5R8, 0, 0
FILE_BOF_BUFFER
^J0.26 | 201
FILE_TYPE
mime type is set
MIME_TYPE
text/plain
FILE_STATE_REMOVE
Cx92a0ym5R8, 4705, 0
[orig_h=141.142.228.5, orig_p=59856/tcp, resp_h=192.150.187.43, resp_p=80/tcp]