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fdaeea0ea9
Updated enum type. New description:
Enum's are supported in .bif and .bro scripts.
An enum in a bif will become available in the event engine and
the policy layer.
It is possible to assign an explicit value to an enum enumerator
element, or the enum type can automatically assign values. However,
the styles cannot be mixed. If automatic assignement is used, the first
element will have a value of 0, the next will have a value of 1, etc.
Enum type variables and identifiers can be formated using the "%s"
format specifier, in which case the symbolic name will be printed.
If the "%d" format specifier is used, the numerical value is
printed.
Example automatic assignment:
type foo: enum {
BAR_A, # value will be 0
BAR_B, # value will be 1
BAR_C, # value will be 2
};
Example with explicit assignment:
type foobar: enum {
BAR_X = 10, # value will be 10
BAR_Y = 23, # value will be 23
BAR_Z = 42, # value will be 42
};
Enumerator values can only by positive integer literals.
The literals can be specified in (0x....), but not in octal (bro policy
layer limitation). So, do not use 0123 as value in bifs!
Each enumerator value can only be used once per enum (C allows
to use the same value multiple times).
All these restrictions are enforced by the policy script layer and not
the bif compiler!
Enums can be redef'ed, i.e., extended. If the enum is automatic
increment assignment, then the value will continue to increment.
If the enum uses explicit assignment, then the redef need to use
explicit assignments as well.
Example 1::
redef enum foo += {
BAR_D, # value will be 3
BAR_E, # value will be 4
BAR_F, # value will be 5
};
Example 2::
redef enum foobar += {
BAR_W = 100,
};
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| aux | ||
| cmake | ||
| doc | ||
| policy | ||
| src | ||
| testing | ||
| .gitignore | ||
| .gitmodules | ||
| bro-path-dev.in | ||
| CHANGES | ||
| Checklist-for-Release | ||
| CMakeLists.txt | ||
| config.h.in | ||
| configure | ||
| COPYING | ||
| INSTALL | ||
| make-mac-packages | ||
| make-rpm-packages | ||
| Makefile | ||
| README | ||
| VERSION | ||
This is release 1.6 of Bro, a system for detecting network intruders in
real-time using passive network monitoring.
Please see the file INSTALL for installation instructions and
pointers for getting started. For more documentation, see the
documentation on Bro's home page:
http://www.bro-ids.org/docs
The main parts of Bro's documentation are also available in the doc/
directory of the distribution. (Please note that the documentation
is still a work in progress; there will be more in future releases.)
Numerous other Bro-related publications, including a paper describing the
system, can be found at
http://www.bro-ids.org/publications.html
Send comments, etc., to the Bro mailing list, bro@bro-ids.org.
However, please note that you must first subscribe to the list in
order to be able to post to it.
- Vern Paxson & Robin Sommer, on behalf of the Bro development team
Lawrence Berkeley National Laboratory
University of California, Berkeley USA
ICSI Center for Internet Research (ICIR)
International Computer Science Institute
Berkeley, CA USA
vern@icir.org / robin@icir.org