OpenBSM 1.0 alpha 6

[Robert Watson]

FYI, OpenBSM 1.0a6 is now online on the TrustedBSD web site.  A short list of 
changes in this revision can be found below.  The purpose of this release is 
primarily to do a code drop that can be brought back into the FreeBSD tree so 
that the new audit pipe changes can be merged.  The pipe changes are for 
support for per-auditpipe preselection properties, allowing IDS or other 
monitoring packages to separately configure the collection of audit records 
independent of the global trail.

Robert N M Watson

OpenBSM 1.0 alpha 6

- Use AU_TO_WRITE and AU_NO_TO_WRITE for the 'keep' argument to au_close();
   previously we used hard-coded 0 and 1 values.
- Add man page for au_open(), au_write(), au_close(), and
   au_close_buffer().
- Support a more complete range of data types for the arbitrary data token:
   add AUR_CHAR (alias to AUR_BYTE), remove AUR_LONG, add AUR_INT32 (alias
   to AUR_INT), add AUR_INT64.
- Add au_close_token(), which allows writing a single token_t to a memory
   buffer.  Not likely to be used much by applications, but useful for
   writing test tools.
- Modify au_to_file() so that it accepts a timeval in user space, not just
   kernel -- this is not a Solaris BSM API so can be modified without
   causing compatibility issues.
- Define a new API, au_to_header32_tm(), which adds a struct timeval
   argument to the ordinary au_to_header32(), which is now implemented by
   wrapping au_to_header32_tm() and calling gettimeofday().  #ifndef KERNEL
   the APIs that invoke gettimeofday(), rather than having a variable
   definition.  Don't try to retrieve time zone information using
   gettimeofday(), as it's not needed, and introduces possible failure
   modes.
- Don't perform byte order transformations on the addr/machine fields of
   the terminal ID that appears in the process32/subject32 tokens.  These
   are assumed to be IP addresses, and as such, to be in network byte
   order.
- Universally, APIs now assume that IP addresses and ports are provided
   in network byte order.  APIs now generally provide these types in
   network byte order when decoding.
- Beginnings of an OpenBSM test framework can now be found in openbsm/test.
   This code is not built or installed by default.
- auditd now assigns more appropriate syslog levels to its debugging and
   error information.
- Support for audit filters introduced: audit filters are dynamically
   loaded shared objects that run in the context of a new daemon,
   auditfilterd.  The daemon reads from an audit pipe and feeds both BSM and
   parsed versions of records to shared objects using a module API.  This
   will provide a framework for the writing of intrusion detection services.
- New utility API, audit_submit(), added to capture common elements of audit
   record submission for many applications.