Date: Fri, 2 Jun 2006 14:57:01 +0100 (BST) From: Robert Watson <rwatson@FreeBSD.org> To: trustedbsd-audit@TrustedBSD.org Subject: OpenBSM 1.0 alpha 6 Message-ID: <20060602145432.O4034@fledge.watson.org>
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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.
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