+##################################################
+# Check for SpamAssassin and ClamAV #
+##################################################
+
+# These are crude tests. If they aren't good enough, we'll have to improve
+# them, for example by actually passing a message through spamc or clamscan.
+
+sub check_running_spamassassin
+{
+my $sock = new FileHandle;
+
+if (system("spamc -h 2>/dev/null >/dev/null") == 0)
+ {
+ print "The spamc command works:\n";
+
+ # This test for an active SpamAssassin is courtesy of John Jetmore.
+ # The tests are hard coded to localhost:783, so no point in making
+ # this test flexible like the clamav test until the test scripts are
+ # changed. spamd doesn't have the nice PING/PONG protocol that
+ # clamd does, but it does respond to errors in an informative manner,
+ # so use that.
+
+ my($sint,$sport) = ('127.0.0.1',783);
+ eval
+ {
+ my $sin = sockaddr_in($sport, inet_aton($sint))
+ or die "** Failed packing $sint:$sport\n";
+ socket($sock, PF_INET, SOCK_STREAM, getprotobyname('tcp'))
+ or die "** Unable to open socket $sint:$sport\n";
+
+ local $SIG{ALRM} =
+ sub { die "** Timeout while connecting to socket $sint:$sport\n"; };
+ alarm(5);
+ connect($sock, $sin)
+ or die "** Unable to connect to socket $sint:$sport\n";
+ alarm(0);
+
+ select((select($sock), $| = 1)[0]);
+ print $sock "bad command\r\n";
+
+ $SIG{ALRM} =
+ sub { die "** Timeout while reading from socket $sint:$sport\n"; };
+ alarm(10);
+ my $res = <$sock>;
+ alarm(0);
+
+ $res =~ m|^SPAMD/|
+ or die "** Did not get SPAMD from socket $sint:$sport. "
+ ."It said: $res\n";
+ };
+ alarm(0);
+ if($@)
+ {
+ print " $@";
+ print " Assume SpamAssassin (spamd) is not running\n";
+ }
+ else
+ {
+ $parm_running{SpamAssassin} = ' ';
+ print " SpamAssassin (spamd) seems to be running\n";
+ }
+ }
+else
+ {
+ print "The spamc command failed: assume SpamAssassin (spamd) is not running\n";
+ }
+}
+
+sub check_running_clamav
+{
+my $sock;
+
+# For ClamAV, we need to find the clamd socket for use in the Exim
+# configuration. Search for the clamd configuration file.
+
+if (system("clamscan -h 2>/dev/null >/dev/null") == 0)
+ {
+ my($f, $clamconf, $test_prefix);
+
+ print "The clamscan command works";
+
+ $test_prefix = $ENV{EXIM_TEST_PREFIX};
+ $test_prefix = '' if !defined $test_prefix;
+
+ foreach $f ("$test_prefix/etc/clamd.conf",
+ "$test_prefix/usr/local/etc/clamd.conf",
+ "$test_prefix/etc/clamav/clamd.conf", '')
+ {
+ if (-e $f)
+ {
+ $clamconf = $f;
+ last;
+ }
+ }
+
+ # Read the ClamAV configuration file and find the socket interface.
+
+ if ($clamconf ne '')
+ {
+ my $socket_domain;
+ open(IN, "$clamconf") || die "\n** Unable to open $clamconf: $!\n";
+ while (<IN>)
+ {
+ if (/^LocalSocket\s+(.*)/)
+ {
+ $parm_clamsocket = $1;
+ $socket_domain = AF_UNIX;
+ last;
+ }
+ if (/^TCPSocket\s+(\d+)/)
+ {
+ if (defined $parm_clamsocket)
+ {
+ $parm_clamsocket .= " $1";
+ $socket_domain = AF_INET;
+ last;
+ }
+ else
+ {
+ $parm_clamsocket = " $1";
+ }
+ }
+ elsif (/^TCPAddr\s+(\S+)/)
+ {
+ if (defined $parm_clamsocket)
+ {
+ $parm_clamsocket = $1 . $parm_clamsocket;
+ $socket_domain = AF_INET;
+ last;
+ }
+ else
+ {
+ $parm_clamsocket = $1;
+ }
+ }
+ }
+ close(IN);
+
+ if (defined $socket_domain)
+ {
+ print ":\n The clamd socket is $parm_clamsocket\n";
+ # This test for an active ClamAV is courtesy of Daniel Tiefnig.
+ eval
+ {
+ my $socket;
+ if ($socket_domain == AF_UNIX)
+ {
+ $socket = sockaddr_un($parm_clamsocket) or die "** Failed packing '$parm_clamsocket'\n";
+ }
+ elsif ($socket_domain == AF_INET)
+ {
+ my ($ca_host, $ca_port) = split(/\s+/,$parm_clamsocket);
+ my $ca_hostent = gethostbyname($ca_host) or die "** Failed to get raw address for host '$ca_host'\n";
+ $socket = sockaddr_in($ca_port, $ca_hostent) or die "** Failed packing '$parm_clamsocket'\n";
+ }
+ else
+ {
+ die "** Unknown socket domain '$socket_domain' (should not happen)\n";
+ }
+ socket($sock, $socket_domain, SOCK_STREAM, 0) or die "** Unable to open socket '$parm_clamsocket'\n";
+ local $SIG{ALRM} = sub { die "** Timeout while connecting to socket '$parm_clamsocket'\n"; };
+ alarm(5);
+ connect($sock, $socket) or die "** Unable to connect to socket '$parm_clamsocket'\n";
+ alarm(0);
+
+ my $ofh = select $sock; $| = 1; select $ofh;
+ print $sock "PING\n";
+
+ $SIG{ALRM} = sub { die "** Timeout while reading from socket '$parm_clamsocket'\n"; };
+ alarm(10);
+ my $res = <$sock>;
+ alarm(0);
+
+ $res =~ /PONG/ or die "** Did not get PONG from socket '$parm_clamsocket'. It said: $res\n";
+ };
+ alarm(0);
+
+ if($@)
+ {
+ print " $@";
+ print " Assume ClamAV is not running\n";
+ }
+ else
+ {
+ $parm_running{ClamAV} = ' ';
+ print " ClamAV seems to be running\n";
+ }
+ }
+ else
+ {
+ print ", but the socket for clamd could not be determined\n";
+ print "Assume ClamAV is not running\n";
+ }
+ }
+
+ else
+ {
+ print ", but I can't find a configuration for clamd\n";
+ print "Assume ClamAV is not running\n";
+ }
+ }
+}
+
+
+sub check_running_redis
+{
+if (defined $parm_lookups{redis})
+ {
+ if (system("redis-server -v 2>/dev/null >/dev/null") == 0)
+ {
+ print "The redis-server command works\n";
+ $parm_running{redis} = ' ';
+ }
+ else
+ {
+ print "The redis-server command failed: assume Redis not installed\n";
+ }
+ }
+}
+
+sub check_running_dovecot
+{
+system('dovecot --version >/dev/null');
+if ($? == 0)
+ {
+ print "Dovecot appears to be available\n";
+ $parm_running{dovecot} = ' ';
+ }
+else
+ {
+ print "Dovecot not found\n";
+ }
+}
+
+
+
+###############################################################################
+###############################################################################
+
+# Here begins the Main Program ...
+
+###############################################################################
+###############################################################################