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# http://www.i-scream.org.uk |
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# |
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# An all-in-one script to act as an i-scream host on |
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# a typical Unix/Linux box. You may adapt the data-gathering |
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# methods as you see fit. |
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# - pjm2@ukc.ac.uk |
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# a typical Unix/Linux box. |
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# |
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# $Author$ |
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# $Id$ |
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$fqdn |
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$pidfile |
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$retry_wait |
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@statgrab |
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); |
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|
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if (@ARGV != 2) { |
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$filter_manager_port = $ARGV[1]; |
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|
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$seq_no = 1; |
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$retry_wait = 6; |
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$retry_wait = 60; |
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|
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# write our PID to a file |
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$pidfile = "/var/tmp/ihost.pid"; |
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else { |
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$delay = $next_tcp; |
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} |
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`sleep $delay`; |
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sleep $delay; |
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} |
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# we'll probably never get here... |
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#----------------------------------------------------------------------- |
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sub wait_then_retry() { |
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print "Will retry configuration with filter manager in $retry_wait seconds.\n"; |
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`sleep $retry_wait`; |
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sleep $retry_wait; |
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} |
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} |
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– |
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– |
|
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#----------------------------------------------------------------------- |
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# send_udp_packet |
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# Sends a UDP packet to an i-scream filter. |
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#----------------------------------------------------------------------- |
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sub send_udp_packet() { |
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my(@statgrab) = `./statgrab.pl`; |
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my(%packet); |
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for (my($i) = 0; $i <= $#statgrab; $i++) { |
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$statgrab[$i] =~ /^([^\s]*) (.*)$/; |
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$packet{$1} = $2; |
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} |
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@statgrab = `./statgrab.pl`; |
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|
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# get some extra data |
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my($date) = time; |
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my($ip); |
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$ip = inet_ntoa(scalar(gethostbyname(hostname())) || 'localhost') or $ip = 'localhost'; |
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my($disk_info) = "<disk>"; |
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my($i) = 0; |
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while (defined $packet{"packet.disk.p$i.attributes.mount"}) { |
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$disk_info .= "<p$i"; |
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$disk_info .= " name=\"" . $packet{"packet.disk.p$i.attributes.name"} . "\""; |
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$disk_info .= " kbytes=\"" . $packet{"packet.disk.p$i.attributes.kbytes"} . "\""; |
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$disk_info .= " used=\"" . $packet{"packet.disk.p$i.attributes.used"} . "\""; |
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$disk_info .= " avail=\"" . $packet{"packet.disk.p$i.attributes.avail"} . "\""; |
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$disk_info .= " mount=\"" . $packet{"packet.disk.p$i.attributes.mount"} . "\""; |
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$disk_info .= "></p$i>"; |
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++$i; |
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} |
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$disk_info .= "</disk>"; |
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|
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my($ip) = inet_ntoa(scalar(gethostbyname(hostname())) || 'localhost'); |
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|
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# Build the XML packet this way, as we can clearly |
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# see the structure and contents... I like this ;-) |
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# [Note that the server rejects UDP packets that are |
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# larger than 8196 bytes] |
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my($xml) = <<EOF; |
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# add some extra data to the array |
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push(@statgrab, "packet.attributes.seq_no=$seq_no"); |
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push(@statgrab, "packet.attributes.machine_name=$fqdn"); |
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push(@statgrab, "packet.attributes.date=$date"); |
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push(@statgrab, "packet.attributes.type=data"); |
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push(@statgrab, "packet.attributes.ip=$ip"); |
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|
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<packet seq_no="$seq_no" machine_name="$fqdn" date="$date" type="data" ip="$ip"> |
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<load> |
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<load1>$packet{"packet.load.load1"}</load1> |
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<load5>$packet{"packet.load.load5"}</load5> |
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<load15>$packet{"packet.load.load15"}</load15> |
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</load> |
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<os> |
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<name>$packet{"packet.os.name"}</name> |
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<release>$packet{"packet.os.release"}</release> |
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<platform>$packet{"packet.os.platform"}</platform> |
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<sysname>$packet{"packet.os.sysname"}</sysname> |
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<version>$packet{"packet.os.version"}</version> |
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<uptime>$packet{"packet.os.uptime"}</uptime> |
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</os> |
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<users> |
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<count>$packet{"packet.users.count"}</count> |
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<list>$packet{"packet.users.list"}</list> |
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</users> |
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<processes> |
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<total>$packet{"packet.processes.total"}</total> |
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<sleeping>$packet{"packet.processes.sleeping"}</sleeping> |
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<zombie>$packet{"packet.processes.zombie"}</zombie> |
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<stopped>$packet{"packet.processes.stopped"}</stopped> |
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<cpu>$packet{"packet.processes.cpu"}</cpu> |
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</processes> |
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<cpu> |
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<idle>$packet{"packet.cpu.idle"}</idle> |
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<user>$packet{"packet.cpu.user"}</user> |
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<kernel>$packet{"packet.cpu.kernel"}</kernel> |
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<iowait>$packet{"packet.cpu.iowait"}</iowait> |
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<swap>$packet{"packet.cpu.swap"}</swap> |
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</cpu> |
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<memory> |
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<total>$packet{"packet.memory.total"}</total> |
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<free>$packet{"packet.memory.free"}</free> |
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</memory> |
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<swap> |
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<total>$packet{"packet.swap.total"}</total> |
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<free>$packet{"packet.swap.free"}</free> |
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</swap> |
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$disk_info |
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</packet> |
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|
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EOF |
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|
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# Make the packet smaller by stripping out newlines and leading spaces. |
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$xml =~ s/\n\s*//g; |
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|
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> |
# turn the array into some nice XML |
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> |
my($xml) = &make_xml("", ""); |
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> |
|
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my($sock) = new IO::Socket::INET ( |
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PeerPort => $udp_port, |
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PeerAddr => $filter_addr, |
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Proto => 'udp' |
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) or die "Could not send UDP: $!\n"; |
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|
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> |
|
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print $sock $xml or die "Could not send UDP packet: $!\n"; |
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close($sock); |
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$seq_no++; |
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} |
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|
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|
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– |
|
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– |
|
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#----------------------------------------------------------------------- |
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# send_tcp_heartbeat |
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# Establishes a TCP connection to an i-scream filter. |
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# The heartbeat is used as a guaranteed "I'm alive" delivery mechanism. |
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+ |
# If we need to reconfigure, then we complete the heartbeat before |
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# doing so. |
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#----------------------------------------------------------------------- |
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sub send_tcp_heartbeat() { |
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|
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+ |
my ($doReconfigure) = 0; |
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+ |
|
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my($sock) = new IO::Socket::INET( |
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PeerAddr => $filter_addr, |
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PeerPort => $tcp_port, |
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if ($response eq "ERROR\n") { |
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close($sock); |
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print "Server configuration changed. Reconfiguring with filter manager.\n"; |
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< |
&tcp_configure(); |
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< |
return; |
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> |
$doReconfigure = 1; |
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} |
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if (!$response eq "OK\n") { |
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close($sock); |
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close($sock); |
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print "^"; |
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|
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+ |
&tcp_configure() if $doReconfigure; |
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+ |
|
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return; |
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} |
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|
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+ |
|
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#----------------------------------------------------------------------- |
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# write_pid |
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# Writes the PID (process ID) of this instance to $pidfile. |
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close PID; |
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|
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return; |
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+ |
} |
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+ |
|
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+ |
#----------------------------------------------------------------------- |
| 390 |
+ |
# make_xml |
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+ |
# Turns an array of statgrab data into an XML string. |
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+ |
#----------------------------------------------------------------------- |
| 393 |
+ |
sub make_xml() { |
| 394 |
+ |
my($curlevel, $curline) = @_; |
| 395 |
+ |
my($xmltemp) = ""; my($curtag) = ""; my($attributes) = ""; |
| 396 |
+ |
while(true) { |
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+ |
$curline = shift(@statgrab) if $curline eq ""; chomp $curline; |
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+ |
if($curline =~ /^$curlevel([^\.\s]+\.)/) { |
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+ |
$curtag=$1; |
| 400 |
+ |
} |
| 401 |
+ |
if($curline =~ /^$curlevel$curtag([^\.\s]+)\s+(.*)$/) { |
| 402 |
+ |
$xmltemp .= "<$1$attributes>$2</$1>"; |
| 403 |
+ |
} |
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+ |
elsif($curline =~ /^$curlevel$curtag(attributes)\.([^\.=]+)=(.*)$/) { |
| 405 |
+ |
$attributes .= " $2=\"$3\""; |
| 406 |
+ |
} |
| 407 |
+ |
else { |
| 408 |
+ |
$xmltemp .= &make_xml("$curlevel$curtag", $curline); |
| 409 |
+ |
} |
| 410 |
+ |
my($nextline) = $statgrab[0]; chomp $nextline if defined $nextline; |
| 411 |
+ |
$curtag =~ s/(.*)\./$1/; |
| 412 |
+ |
if(defined $nextline && $nextline =~ /^$curlevel$curtag\./) { |
| 413 |
+ |
$curline = ""; |
| 414 |
+ |
} |
| 415 |
+ |
else { |
| 416 |
+ |
$xmltemp = "<$curtag$attributes>$xmltemp</$curtag>" unless $curtag eq ""; |
| 417 |
+ |
return $xmltemp; |
| 418 |
+ |
} |
| 419 |
+ |
} |
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|
} |
