Re: releasibility in mcstransd

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On Jun 9, 2008, at 4:04 PM, Chad Hanson wrote:


Seems reasonable to me unless you want to create a nice new encoding
language ;)

How would the user process translate, eg, s0:c102.c128, just s0?

-Chad

Attached is a source rpm based on the mcstransd we are using internally. It can translate ranges that look like:

Secret Releasable to USA/FRA/DEU/ZWI
Confidential Rel GBR
Secret A
Secret Noforn
Secret Rel to USA/GBR-Secret Noforn
Restricted Handle Via Iron,Plastic,Copper Pipes Only-Restricted Handle Via Iron Pipes Only
...

It supports the idea of default inverse bits, multiple domains of translation (still needs some protocol support) and aliases for levels and compartments. The example setrans.conf include an implementation of releasabilities based on ISO 3166 three letter country codes and FIPS-10 two letter country codes pulled from the CIA World Factbook. Any combination or permutation of releasabilities with arbitrary prefix and suffix is supported.

There is an include mechanism to allow segregating category configuration into separate files of related words and a python test harness with the tests in separate files.

We have used the code internally to translate the US CAPCO markings standard (minus the words with '-' in them).

I've been meaning to release it for the better part of a year and Josh's email persuaded me to go ahead even though there are a number of things remaining on the TO DO list: - a simple constraints language so you can say that categories foo and bar can not be in the same level together. - finish the multiple domain of translation support (multiple languages and paragraph markings)
 - more hardening
- better first translation performance (subsequent translations are cached)
 - words with embedded '-'
 - man pages :(

There is a README in the conf directory describing the configuration file format and a number of examples in the sample configuration and test files.

To install and test (as root in MLS/Permissive)

rpm -ivh mcstrans-0.3.0-1.jnall.src.rpm
rpmbuild -bb /usr/src/redhat/SPECS/mcstrans.spec
rpm -Uvh /usr/src/redhat/RPMS/*/mcstrans-*.rpm

cd /usr/src/redhat/BUILD/mcstrans-0.3.0/conf
cp -rp setrans.conf setrans.d /etc/selinux/mls/
restorecon -rv /etc/selinux/mls
service mcstrans restart

cd /usr/src/redhat/BUILD/mcstrans-0.3.0/utils
make test

joe

Attachment: mcstrans-0.3.0-1.jnall.src.rpm
Description: application/vnd.rn-realmedia


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