#!/usr/bin/perl -w
use strict;
 
my $calog = "/var/log/ca/ca.log.1";
my $line;
my @certs;
my $i;
my @newlist;
 
open LOG, "$calog" or die "Can't open $calog: $!\n";
while ($line = <DATA>){
  if ($line =~ m/\'([\w.]+)\' added/) {
      push(@certs, $1);
 } #end if
   
for $i (@certs){ 
  if ($line =~ m^/([\w.]+\.2048|512).+renewed|revoked/) {
    push(@newlist, $1);
  } #close if
 } #close for
} #end while
 
print "@newlist";

__DATA__
Sep 14 14:00:04 nt-na-pk NA(Domain-ca): Certificate came 'tuser.512' added to database.
Sep 14 14:00:04 nt-na-pk NA(Domain-ca): tuser.512: This Certificate has been renewed.
Sep 14 14:02:02 nt-na-pk NA(Domain-ca): [mless] Certificate came 'muser.2048' has been revoked.
Sep 14 14:02:31 nt-na-pk NA(Domain-ca): [mless] Certificate came 'muser.2048' added to database.
Sep 14 14:08:49 nt-na-pk NA(Domain-ca): Certificate came 'muser.2048' added to database.
Sep 14 14:48:20 nt-na-pk NA(Domain-ca): Certificate came 'psmith.512' added to database.
Sep 14 14:48:20 nt-na-pk NA(Domain-ca): Certificate came 'mchin.2048' added to database.