1OpenBSM Version History 2 3OpenBSM 1.1 alpha 4 4 5- With the addition of BSM error number mapping, we also need to map the 6 local error number passed to audit_submit(3) to a BSM error number, rather 7 than have the caller perform that conversion. 8- Reallocate user audit events to avoid collisions with Solaris; adopt a more 9 formal allocation scheme, and add some events allocated in Solaris that 10 will be of immediate use on other platforms. 11- Add an event for Calife. 12- Add au_strerror(3), which allows generating strings for BSM errors 13 directly, rather than requiring applications to map to the local error 14 space, which might not be able to entirely represent the BSM error number 15 space. 16- Major auditd rewrite for launchd(8) support. Add libauditd library that is 17 shared between launchd and auditd. 18- Add AUDIT_TRIGGER_INITIALIZE trigger (sent via 'audit -i') for (re)starting 19 auditing under launchd(8) on Mac OS X. 20- Add 'current' symlink to active audit trail. 21- Add crash recovery of previous audit trail file when detected on audit 22 startup that it has not been properly terminated. 23- Add the event AUE_audit_recovery to indicated when an audit trail file has 24 been recovered from not being properly terminated. This event is stored 25 in the new audit trail file and includes the path of recovered audit trail 26 file. 27- Mac OS X and FreeBSD dependent code in auditd.c is separated into 28 auditd_darwin.c and auditd_fbsd.c files. 29- Add an event for the posix_spawn(2) and fsgetpath(2) Mac OS X system calls. 30- For Mac OS X, we use ASL(3) instead of syslog(3) for logging. 31- Add support for NOTICE level logging. 32 33OpenBSM 1.1 alpha 3 34 35- Add two new functions, au_bsm_to_errno() and au_errno_to_bsm(), to map 36 between BSM error numbers (largely the Solaris definitions) and local 37 errno(2) values for 32-bit and 64-bit return tokens. This is required as 38 operating systems don't agree on some of the values of more recent error 39 numbers. 40- Fix a bug how au_to_exec_args(3) and au_to_exec_env(3) calculates the total 41 size for the token. This bug resulted in "unknown" tokens being printed 42 after the exec args/env tokens. 43- Support for AUT_SOCKET_EX extended socket tokens, which describe a socket 44 using a pair of IPv4/IPv6 and port tuples. 45- OpenBSM BSM file header version bumped for 1.1 release. 46- Deprecated Darwin constants, such as TRAILER_PAD_MAGIC, removed. 47 48OpenBSM 1.1 alpha 2 49 50- Include files in OpenBSM are now broken out into two parts: library builds 51 required solely for user space, and system includes, which may also be 52 required for use in the kernels of systems integrating OpenBSM. Submitted 53 by Stacey Son. 54- Configure option --with-native-includes allows forcing the use of native 55 include for system includes, rather than the versions bundled with OpenBSM. 56 This is intended specifically for platforms that ship OpenBSM, have adapted 57 versions of the system includes in a kernel source tree, and will use the 58 OpenBSM build infrastructure with an unmodified OpenBSM distribution, 59 allowing the customized system includes to be used with the OpenBSM build. 60 Submitted by Stacey Son. 61- Various strcpy()'s/strcat()'s have been changed to strlcpy()'s/strlcat()'s 62 or asprintf(). Added compat/strlcpy.h for Linux. 63- Remove compatibility defines for old Darwin token constant names; now only 64 BSM token names are provided and used. 65- Add support for extended header tokens, which contain space for information 66 on the host generating the record. 67- Add support for setting extended host information in the kernel, which is 68 used for setting host information in extended header tokens. The 69 audit_control file now supports a "host" parameter which can be used by 70 auditd to set the information; if not present, the kernel parameters won't 71 be set and auditd uses unextended headers for records that it generates. 72 73OpenBSM 1.1 alpha 1 74 75- Add option to auditreduce(1) which allows users to invert sense of 76 matching, such that BSM records that do not match, are selected. 77- Fix bug in audit_write() where we commit an incomplete record in the 78 event there is an error writing the subject token. This was submitted 79 by Diego Giagio. 80- Build support for Mac OS X 10.5.1 submitted by Eric Hall. 81- Fix a bug which resulted in host XML attributes not being printed 82 while processing extended header tokens. This patch was submitted by 83 Martin Voros. 84- Constification of function arguments so that const strings can be passed 85 as arguments to tokens. This patch was submitted by Xin LI. 86- Modify the -m option so users can select more then one audit event. 87- For Mac OS X, added Mach IPC support for audit trigger messages. 88- Fixed a bug in getacna() which resulted in a locking problem on Mac OS X. 89- Added LOG_PERROR flag to openlog when -d option is used with auditd. 90- AUE events added for Mac OS X Leopard system calls. 91 92OpenBSM 1.0 93 94- Fix bug in auditreduce(1) which resulted in a memory fault/crash when 95 the user specified an event name with -m. 96- Remove AU_.* hard-coded audit class constants, as audit classes are now 97 entirely dynamically configured using /etc/security/audit_class. 98 99OpenBSM 1.0 alpha 15 100 101- Fix bug when processing in_addr_ex tokens. 102- Restore the behavior of printing the string/text specified while 103 auditing arg32 tokens. 104- Synchronized audit event list to Solaris, picking up the *at(2) system call 105 definitions, now required for FreeBSD and Linux. Added additional events 106 for *at(2) system calls not present in Solaris. 107- Bugs in auditreduce(1) fixed allowing partial date strings to be used in 108 filtering events. 109 110OpenBSM 1.0 alpha 14 111 112- Fix endian issues when processing IPv6 addresses for extended subject 113 and process tokens. 114- gcc41 warnings clean. 115- Teach audit_submit(3) about getaudit_addr(2). 116- Add support for zonename tokens. 117 118OpenBSM 1.0 alpha 13 119 120- compat/clock_gettime.h now provides a compatibility implementation of 121 clock_gettime(), which fixes building on Mac OS X. 122- Countless man page improvements, markup fixes, content fixs, etc. 123- XML printing support via "praudit -x". 124- audit.log.5 expanded to include additional BSM token types. 125- Added encoding and decoding routines for process64_ex, process32_ex, 126 subject32_ex, header64, and attr64 tokens. 127- Additional audit event identifiers for listen, mlockall/munlockall, 128 getpath, POSIX message queues, and mandatory access control. 129 130OpenBSM 1.0 alpha 12 131 132- Correct bug in auditreduce which prevented the -c option from working 133 correctly when the user specifies to process successful or failed events. 134 The problem stemmed from not having access to the return token at the time 135 the initial preselection occurred, but now a second preselection process 136 occurs while processing the return token. 137- getacfilesz(3) API added to read new audit_control(5) filesz setting, 138 which auditd(8) now sets the kernel audit trail rotation size to. 139- auditreduce(1) now uses stdin if no file names are specified on the command 140 line; this was the documented behavior previously, but it was not 141 implemented. Be more specific in auditreduce(1)'s examples section about 142 what might be done with the output of auditreduce. 143- Add audit_warn(5) closefile event so that administrators can hook 144 termination of an audit trail file. For example, this might be used to 145 compress the trail file after it is closed. 146- auditreduce(1) now uses regular expressions for pathname matching. Users can 147 now supply one or more (comma delimited) regular expressions for searching 148 the pathnames. If one of the regular expressions is prefixed with a tilde 149 (~), and a path matches, it will be excluded from the search results. 150 151OpenBSM 1.0 alpha 11 152 153- Reclassify certain read/write operations as having no class rather than the 154 fr/fw class; our default classes audit intent (open) not operations (read, 155 write). 156- Introduce AUE_SYSCTL_WRITE event so that BSD/Darwin systems can audit reads 157 and writes of sysctls as separate events. Add additional kernel 158 environment and jail events for FreeBSD. 159- Break AUDIT_TRIGGER_OPEN_NEW into two events, AUDIT_TRIGGER_ROTATE_USER 160 (issued by the user audit(8) tool) and AUDIT_TRIGGER_ROTATE_KERNEL (issued 161 by the kernel audit implementation) so that they can be distinguished. 162- Disable rate limiting of rotate requests; as the kernel doesn't retransmit 163 a dropped request, the log file will otherwise grow indefinitely if the 164 trigger is dropped. 165- Improve auditd debugging output. 166- Fix a number of threading related bugs in audit_control file reading 167 routines. 168- Add APIs au_poltostr() and au_strtopol() to convert between text 169 representations of audit_control policy flags and the flags passed to 170 auditon(A_SETPOLICY) and retrieved from auditon(A_GETPOLICY). 171- Add API getacpol() to return the 'policy:' entry from audit_control, an 172 extension to the Solaris file format to allow specification of policy 173 persistent flags. 174- Update audump to print the audit_control policy field. 175- Update auditd to read the audit_control policy field and set the kernel 176 policy to match it when configuring/reconfiguring. Remove the -s and -h 177 arguments as these policies are now set via the configuration file. If a 178 policy line is not found in the configuration file, continue with the 179 current default of setting AUDIT_CNT. 180- Fix bugs in the parsing of large execve(2) arguments and environmental 181 variable tokens; increase maximum parsed argument and variable count. 182- configure now detects strlcat(), used by policy-related functions. 183- Reference token and record sample files added to test tree. 184 185OpenBSM 1.0 alpha 10 186 187- auditd now generates complete audit records for its events, as required for 188 application-submitted audit records in the FreeBSD kernel audit 189 implementation. 190 191OpenBSM 1.0 alpha 9 192 193- Rename many OpenBSM-specific constants and API elements containing the 194 strings "BSM" and "bsm" to "AUDIT" and "audit", observing that this is true 195 for almost all existing constants and APIs. 196- Instead of passing a per-instance cookie directly into all audit filter 197 APIs, pass in the audit filter daemon state pointer, which is then used by 198 the module using an audit_filter_{get,set}cookie() API. This will allow 199 future service APIs provided by the filter daemon to maintain their own 200 state -- for example, per-module preselection state. 201 202OpenBSM 1.0 alpha 8 203 204- Correct typo in definition of AUR_INT. 205- Adopt OpenSolaris constant values for AUDIT_* configuration flags. 206- Arguments to au_to_exec_args() and au_to_exec_env() no longer const. 207- Add kernel versions of au_to_exec_args() and au_to_exec_env(). 208- Fix exec argument type that is printed for env strings from 'arg' to 'env'. 209- New OpenBSM token version number assigned, constants added for other 210 commonly seen version numbers. 211- OpenBSM-specific events assigned numbers in the 43xxx range to avoid future 212 collisions with Solaris. Darwin events renamed to AUE_DARWIN_foo, as they 213 are now deprecated numberings. 214- autoconf now detects clock_gettime(), which is not available on Darwin. 215- praudit output fixes relating to arg32 and arg64 tokens. 216- Maximum record size updated to 64k-1 to match Solaris record size limit. 217- Various style and comment cleanups in include files. 218 219OpenBSM 1.0 alpha 7 220 221- Adopted Solaris-compatible format for subject32_ex and subject64_ex 222 tokens, which previously did not correctly implement variable length 223 address storage. 224- Prefer inttypes.h to stdint.h; enhance queue.h detection to test for 225 TAILQ_FOREACH_SAFE(), which is present in recent BSD queue.h's, but not 226 older ones. OpenBSM now builds on some FreeBSD 4.x versions. 227- New event types for extended attributes, ACLs, and scheduling. 228 229OpenBSM 1.0 alpha 6 230 231- Use AU_TO_WRITE and AU_NO_TO_WRITE for the 'keep' argument to au_close(); 232 previously we used hard-coded 0 and 1 values. 233- Add man page for au_open(), au_write(), au_close(), and 234 au_close_buffer(). 235- Support a more complete range of data types for the arbitrary data token: 236 add AUR_CHAR (alias to AUR_BYTE), remove AUR_LONG, add AUR_INT32 (alias 237 to AUR_INT), add AUR_INT64. 238- Add au_close_token(), which allows writing a single token_t to a memory 239 buffer. Not likely to be used much by applications, but useful for 240 writing test tools. 241- Modify au_to_file() so that it accepts a timeval in user space, not just 242 kernel -- this is not a Solaris BSM API so can be modified without 243 causing compatibility issues. 244- Define a new API, au_to_header32_tm(), which adds a struct timeval 245 argument to the ordinary au_to_header32(), which is now implemented by 246 wrapping au_to_header32_tm() and calling gettimeofday(). #ifndef KERNEL 247 the APIs that invoke gettimeofday(), rather than having a variable 248 definition. Don't try to retrieve time zone information using 249 gettimeofday(), as it's not needed, and introduces possible failure 250 modes. 251- Don't perform byte order transformations on the addr/machine fields of 252 the terminal ID that appears in the process32/subject32 tokens. These 253 are assumed to be IP addresses, and as such, to be in network byte 254 order. 255- Universally, APIs now assume that IP addresses and ports are provided 256 in network byte order. APIs now generally provide these types in 257 network byte order when decoding. 258- Beginnings of an OpenBSM test framework can now be found in openbsm/test. 259 This code is not built or installed by default. 260- auditd now assigns more appropriate syslog levels to its debugging and 261 error information. 262- Support for audit filters introduced: audit filters are dynamically 263 loaded shared objects that run in the context of a new daemon, 264 auditfilterd. The daemon reads from an audit pipe and feeds both BSM and 265 parsed versions of records to shared objects using a module API. This 266 will provide a framework for the writing of intrusion detection services. 267- New utility API, audit_submit(), added to capture common elements of audit 268 record submission for many applications. 269 270OpenBSM 1.0 alpha 5 271 272- Update install notes to indicate /etc files are to be installed manually. 273- On systems without LOG_SECURITY, use LOG_AUTH. 274- Convert to autoconf/automake in order to move to a more portable (not 275 BSD-specific) build infrastructure, and more easy conditional building of 276 components. Currently, the primary feature loss is that automake does 277 not have native support for manual symlinks. This will be addressed in a 278 future OpenBSM release. 279- Add compat/queue.h, to be used on systems dated BSD queue macro libraries 280 (as found on Linux). 281- Rename CHANGELOG to HISTORY, as our change log doesn't follow some of the 282 existing conventions for a CHANGELOG. 283- Some private data structures moved from audit.h to audit_internal.h to 284 prevent inappropriate use by applications and name space pollution. 285- Improved detection and use of endian macros using autoconf. 286- Avoid non-portable use of struct in6_addr, which is largely opaque. 287- Avoid leaking BSD kernel socket related token code to user space in 288 bsm_token.c. 289- Teach System V IPC calls to look for Linux naming variations for certain 290 struct ipc_perm fields. 291- Test for audit system calls, and if not present, don't build 292 bsm_wrappers.c, bsm_notify.c, audit(8), and auditd(8), which rely on 293 those system calls. 294- au_close() is not implemented on systems that don't have audit system 295 calls, but au_close_buffer() is. 296- Work around missing BSDisms in bsm_wrapper.c. 297- Fix nested includes so including libbsm.h in an application on Linux 298 picks up the necessary definitions. 299 300OpenBSM 1.0 alpha 4 301 302- Remove "audit" user example from audit_user, as it's not present on most 303 systems. 304- Add cannot_audit() function non-Darwin systems that wraps auditon(); 305 required by OpenSSH BSM support. Convert Darwin cannot_audit() into a 306 function rather than a macro. 307- Library build fixed on Darwin following include file tweaks. The native 308 Darwin sys/audit.h conflicts with bsm/audit.h due to duplicate types, so 309 for now we force bsm_wrappers.c to not perform a nested include of 310 sys/audit.h. 311 312OpenBSM 1.0 alpha 3 313 314- Man page formatting, cross reference, mlinks, and accuracy improvements. 315- auditd and tools now compile and run on FreeBSD/arm. 316- auditd will now fchown() the trail file to the audit review group, if 317 defined at compile-time. 318- Added AUE_SYSARCH for FreeBSD. 319- Definition of AUE_SETFSGID fixed for Linux. 320 321OpenBSM 1.0 alpha 2 322 323- Man page formatting improvements. 324- A number of new audit event identifiers for FreeBSD, Linux, and POSIX.1b 325 events. 326- Remove 'tfm' class, unused in OpenBSM. 327 328OpenBSM 1.0 alpha 1 329 330- Import of Darwin74 BSM drop 331- Use 'syslog' for audit log warnings, rather than echoing to a file in 332 audit_warn. 333- Compile using BSD make infrastructure. 334- Integrate bsm/ include files from Darwin74 XNU drop into OpenBSM. 335- Narrow set of symbols and defines that are exposed in user space: don't 336 compile in code relying on kernel-only types such as 'struct socket'. 337- Add README, including basic build documentation. 338- Compilation of Apple-specific notify and Machroutines now #ifdef __APPLE__. 339- Staticize libbsm global variables to avoid leakage into applications. 340- Add free_au_user_ent() so that au_user_ent's don't have to be leaked. 341- Clean up bogus nul-termination checks in libbsm. 342- Add libbsm API man pages: au_class.3 au_control.3 au_event.3 343 au_free_token.3 au_io.3 au_mask.3 au_token.3 au_user.3 libbsm.3. 344- Add man pages for BSM system calls: audit.2 auditctl.2 auditon.2 getaudit.2 345 getauid.2 setaudit.2 setauid.2 346- Modify various libbsm interfaces to more consistently return 'errno' values 347 on failure. 348- Break out au_close() into constituent parts, allowing records to be written 349 to memory as well as files. 350- Prefix various defines with 'BSM_' to reduce name space pollution. 351- Added audit_internal.h, which can be used by a kernel audit implementation 352 wanting to rely on libbsm components. 353- Build with warnings, and eliminate warnings. 354- Make libbsm endian-independent, storing and reading BSM are big endian 355 (network byte order) rather than native byte order. More consistently 356 print IP addresses using the IP address print routine. These changes 357 make use of sys/endian.h from *BSD; since this isn't present on Darwin, 358 add it to OpenBSM as compat/endian.h, which is used only on Darwin. 359- Import of Darwin80 BSM drop, including 64-bit file IDs, better 360 documentation of private APIs, and bug fixes. 361- White space cleanup. 362- Add audit.log.5, a first cut at a man page documenting the BSM file format. 363- Teach au_read_rec() to recognize stand-alone file tokens, which are present 364 at the beginning and end of Solaris audit trails. Technically, these 365 appear to violate the high level BSM spec, which suggests that all tokens 366 are present in records, but need to be supported. 367- Implement HEADER64, ATTR64, SUBJECT64 token types, which make it possible 368 to run praudit(1) on basic Solaris BSM streams. 369- Switched to Solaris spelling of token names; Darwin spellings are now 370 deprecated and will be removed in a future version of OpenBSM. 371- Adopt Solaris model for representing IPv4 and IPv6 addresses. 372- Prefer C99 types. 373- Attempt to universally adopt the BSD style(9) coding style for 374 consistency. 375- auditreduce(1) now has a usage message. 376- Update support for auditctl(2) system call to support FreeBSD. 377- Add support for /dev/audit as the trigger source on FreeBSD. 378- Add additional event types for Darwin, FreeBSD, and Solaris. Annotate 379 conflicts (there are a few, unfortunately). Correct spellings, comment, 380 sort, etc. These include {get,set}res[ug]id(), sendfile(), lchflags(), 381 eaccess(), kqueue(), kevent(), poll(), lchmod(). 382- Relicensed under a BSD license, many thanks to Apple, Inc! 383- Many bug fixes, cleanups, thread safety in the class, control, event, 384 and user system audit databases. Annotate some persisting atomicity 385 bugs associated with the API and implementation. 386- Add audump test tool. 387- Adopt OpenSolaris BSM API memory semantics: caller allocates memory, 388 or static memory is returned for non-_r() versions of API calls. 389 _free() calls dropped as a result, and source code compatibility with 390 OpenSolaris improved significantly. 391- Annotate BSM events with origin OS and compatibility information. 392- auditd(8), audit(8) added to the OpenBSM distribution. auditd extended 393 to support reloading of kernel event table. 394- Allow comments in /etc/security configuration files. 395 396$P4: //depot/projects/trustedbsd/openbsm/NEWS#21 $ 397