[Avcheck] Announce: avcheck-0.3

[Michael Tokarev]

I just uploaded avcheck-0.3 into

 ftp://ftp.corpit.ru/pub/avpcheck/avcheck-0.3.tar.gz

Note: INCOMPATIBILITY COMMAND-LINE OPTIONS CHANGE was made.

Most important change was introduction of timeout for daemon
operations -- an attempt to implement a workaround for
broken avpdaemon.  This is not a real workaround, -- a message
that can't be checked by a daemon will sit in queue and
will be retried again and again, with the same effect...
But at least one will be able to notice this process and
save a message somehow...  Ugly like a hell, but I can't
think of any other better solution.

Command line options was changed because of:

 a timeout was introduced - a good candidate for -t option
  that was already used.

 -s (av socket) option can be easily "overloaded" with "protocol
  name" -- instead of having
    -t avp -s /var/spool/avp/ctl/AvpCtl
  it is simpler and shorter to have
    -s avp:/var/spool/avp/ctl/AvpCtl
  or
    -s drweb:localhost:3000
  so both -s and -t as them was before seems to be redundrand
  (why I not figured this before?? ;)

I'm sorry for this change, and I don't expect any other such
changes in the future.  Note that I changed avcheck's exit code
to EX_TEMPFAIL in *all* non-successeful cases, including ones
where it previously exited with EX_USAGE (i.e. command-line
options parsing) -- so it will not bounce mails even in case
you will forget to change main.cf settings.

Other changes include:

 added signal handlers to both avcheck and example infected scripts --
  it is now safe to interrupt process, and it will clean up temp
  file(s).  Postfix sends SIGKILL when command_time_limit exceeded.

 addition of README.AVP -- instruction of setting up kavdaemon in
  chroot environment, derived from Ralf's HOWTO.  Still needs some
  more work, but usable as it is now.

 some minor tweaks in scripts ("$@" => "$SENDER" typo change)

 infected.ex2 now built from template and language files, so
  there are infected.ex2.de, infected.ex2.pl etc now. ;)

Due to limited time, I can't incorporate other stuff now, I'm sorry
for this.  Next release will contain more examples, some startup
scripts and actually tested drweb support (I'm enouth with avp and
switching to drweb).

Regards,
 Michael.