freebsd-dev/contrib/openbsm/HISTORY

OpenBSM 1.0 alpha 9

- Rename many OpenBSM-specific constants and API elements containing the
  strings "BSM" and "bsm" to "AUDIT" and "audit", observing that this is true
  for almost all existing constants and APIs.
- Instead of passing a per-instance cookie directly into all audit filter
  APIs, pass in the audit filter daemon state pointer, which is then used by
  the module using an audit_filter_{get,set}cookie() API.  This will allow
  future service APIs provided by the filter daemon to maintain their own
  state -- for example, per-module preselection state.

OpenBSM 1.0 alpha 8

- Correct typo in definition of AUR_INT.
- Adopt OpenSolaris constant values for AUDIT_* configuration flags.
- Arguments to au_to_exec_args() and au_to_exec_env() no longer const.
- Add kernel versions of au_to_exec_args() and au_to_exec_env().
- Fix exec argument type that is printed for env strings from 'arg' to 'env'.
- New OpenBSM token version number assigned, constants added for other
  commonly seen version numbers.
- OpenBSM-specific events assigned numbers in the 43xxx range to avoid future
  collisions with Solaris.  Darwin events renamed to AUE_DARWIN_foo, as they
  are now deprecated numberings.
- autoconf now detects clock_gettime(), which is not available on Darwin.
- praudit output fixes relating to arg32 and arg64 tokens.
- Maximum record size updated to 64k-1 to match Solaris record size limit.
- Various style and comment cleanups in include files.

OpenBSM 1.0 alpha 7

- Adopted Solaris-compatible format for subject32_ex and subject64_ex
  tokens, which previously did not correctly implement variable length
  address storage.
- Prefer inttypes.h to stdint.h; enhance queue.h detection to test for
  TAILQ_FOREACH_SAFE(), which is present in recent BSD queue.h's, but not
  older ones.  OpenBSM now builds on some FreeBSD 4.x version.
- New event types for extended attributes, ACLs, and scheduling.

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.

OpenBSM 1.0 alpha 5

- Update install notes to indicate /etc files are to be installed manually.
- On systems without LOG_SECURITY, use LOG_AUTH.
- Convert to autoconf/automake in order to move to a more portable (not
  BSD-specific) build infrastructure, and more easy conditional building of
  components.  Currently, the primary feature loss is that automake does
  not have native support for manual symlinks.  This will be addressed in a
  future OpenBSM release.
- Add compat/queue.h, to be used on systems dated BSD queue macro libraries
  (as found on Linux).
- Rename CHANGELOG to HISTORY, as our change log doesn't follow some of the
  existing conventions for a CHANGELOG.
- Some private data structures moved from audit.h to audit_internal.h to
  prevent inappropriate use by applications and name space pollution.
- Improved detection and use of endian macros using autoconf.
- Avoid non-portable use of struct in6_addr, which is largely opaque.
- Avoid leaking BSD kernel socket related token code to user space in
  bsm_token.c.
- Teach System V IPC calls to look for Linux naming variations for certain
  struct ipc_perm fields.
- Test for audit system calls, and if not present, don't build
  bsm_wrappers.c, bsm_notify.c, audit(8), and auditd(8), which rely on
  those system calls.
- au_close() is not implemented on systems that don't have audit system
  calls, but au_close_buffer() is.
- Work around missing BSDisms in bsm_wrapper.c.
- Fix nested includes so including libbsm.h in an application on Linux
  picks up the necessary definitions.

OpenBSM 1.0 alpha 4

- Remove "audit" user example from audit_user, as it's not present on most
  systems.
- Add cannot_audit() function non-Darwin systems that wraps auditon();
  required by OpenSSH BSM support.  Convert Darwin cannot_audit() into a
  function rather than a macro.
- Library build fixed on Darwin following include file tweaks.  The native
  Darwin sys/audit.h conflicts with bsm/audit.h due to duplicate types, so
  for now we force bsm_wrappers.c to not perform a nested include of
  sys/audit.h.

OpenBSM 1.0 alpha 3

- Man page formatting, cross reference, mlinks, and accuracy improvements.
- auditd and tools now compile and run on FreeBSD/arm.
- auditd will now fchown() the trail file to the audit review group, if
  defined at compile-time.
- Added AUE_SYSARCH for FreeBSD.
- Definition of AUE_SETFSGID fixed for Linux.

OpenBSM 1.0 alpha 2

- Man page formatting improvements.
- A number of new audit event identifiers for FreeBSD, Linux, and POSIX.1b
  events.
- Remove 'tfm' class, unused in OpenBSM.

OpenBSM 1.0 alpha 1

- Import of Darwin74 BSM drop
- Use 'syslog' for audit log warnings, rather than echoing to a file in
  audit_warn.
- Compile using BSD make infrastructure.
- Integrate bsm/ include files from Darwin74 XNU drop into OpenBSM.
- Narrow set of symbols and defines that are exposed in user space: don't
  compile in code relying on kernel-only types such as 'struct socket'.
- Add README, including basic build documentation.
- Compilation of Apple-specific notify and Machroutines now #ifdef __APPLE__.
- Staticize libbsm global variables to avoid leakage into application.
- Add free_au_user_ent() so that au_user_ent's don't have to be leaked.
- Clean up bogus nul-termination checks in libbsm.
- Add libbsm API man pages: au_class.3 au_control.3 au_event.3
  au_free_token.3 au_io.3 au_mask.3 au_token.3 au_user.3 libbsm.3.
- Add man pages for BSM system calls: audit.2 auditctl.2 auditon.2 getaudit.2
  getauid.2 setaudit.2 setauid.2
- Modify various libbsm interfaces to more consistently return 'errno' values
  on failure.
- Break out au_close() into constituent parts, allowing records to be written
  to memory as well as files.
- Prefix various defines with 'BSM_' to reduce name space pollution.
- Added audit_internal.h, which can be used by a kernel audit implementation
  wanting to rely on libbsm components.
- Build with warnings, and eliminate warnings.
- Make libbsm endian-independent, storing and reading BSM are big endian
  (network byte order) rather than native byte order.  More consistently
  print IP addresses using the IP address print routine.  These changes
  make use of sys/endian.h from *BSD; since this isn't present on Darwin,
  add it to OpenBSM as compat/endian.h, which is used only on Darwin.
- Import of Darwin80 BSM drop, including 64-bit file IDs, better
  documentation of private APIs, and bug fixes.
- White space cleanup.
- Add audit.log.5, a first cut at a man page documenting the BSM file format.
- Teach au_read_rec() to recognize stand-alone file tokens, which are present
  at the beginning and end of Solaris audit trails.  Technically, these
  appear to violate the high level BSM spec, which suggests that all tokens
  are present in records, but need to be supported.
- Implement HEADER64, ATTR64, SUBJECT64 token types, which make it possible
  to run praudit(1) on basic Solaris BSM streams.
- Switched to Solaris spelling of token names; Darwin spellings are now
  deprecated and will be removed in a future version of OpenBSM.
- Adopt Solaris model for representing IPv4 and IPv6 addresses.
- Prefer C99 types.
- Attempt to universally adopt the BSD style(9) coding style for
  consistency.
- auditreduce(1) now has a usage message.
- Update support for auditctl(2) system call to support FreeBSD.
- Add support for /dev/audit as the trigger source on FreeBSD.
- Add additional event types for Darwin, FreeBSD, and Solaris.  Annotate
  conflicts (there are a few, unfortunately).  Correct spellings, comment,
  sort, etc.  These include {get,set}res[ug]id(), sendfile(), lchflags(),
  eaccess(), kqueue(), kevent(), poll(), lchmod().
- Relicensed under a BSD license, many thanks to Apple, Inc!
- Many bug fixes, cleanups, thread safety in the class, control, event,
  and user system audit databases.  Annotate some persisting atomicity
  bugs associated with the API and implementation.
- Add audump test tool.
- Adopt OpenSolaris BSM API memory semantics: caller allocates memory,
  or static memory is returned for non-_r() versions of API calls.
  _free() calls dropped as a result, and source code compatibility with
  OpenSolaris improved significantly.
- Annotate BSM events with origin OS and compatibility information.
- auditd(8), audit(8) added to the OpenBSM distribution.  auditd extended
  to support reloading of kernel event table.
- Allow comments in /etc/security configuration files.

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