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Comparing projects/cms/source/host/ihost-perl/ihost.pl (file contents):
Revision 1.29 by pjm2, Wed Mar 14 18:49:00 2001 UTC vs.
Revision 1.46 by tdb, Mon Mar 11 13:34:24 2002 UTC

#	Line 5 | Line 5
5		# http://www.i-scream.org.uk
6		#
7		# An all-in-one script to act as an i-scream host on
8	<	# a typical Unix/Linux box.  You may adapt the data-gathering
9	<	# methods as you see fit.
10	<	#  - pjm2@ukc.ac.uk
8	>	# a typical Unix/Linux box.
9		#
10		# $Author$
11		# $Id$
#	Line 35 | Line 33 | use vars qw (
33		$fqdn
34		$pidfile
35		$retry_wait
36	+	$ostype
37	+	@data
38		);
39
40		if (@ARGV != 2) {
#	Line 45 | Line 45 | $filter_manager_addr = $ARGV[0];
45		$filter_manager_port = $ARGV[1];
46
47		$seq_no = 1;
48	<	$retry_wait = 600;
48	>	$retry_wait = 60;
49
50	+	# work out our platform, if we can.
51	+	$ostype = `uname -s`;
52	+	chomp $ostype;
53	+	$ostype = "unknown" if not defined $ostype;
54	+
55		# write our PID to a file
56	<	$pidfile = "/var/tmp/ihost.pid";
56	>	# use home dir by default
57	>	#$pidfile = $ENV{"HOME"};
58	>	# or drop it in /var/tmp if we can't find HOME
59	>	$pidfile = "/var/tmp" if not defined $pidfile;
60	>	$pidfile .= "/.ihost.pid";
61		&write_pid();
62
63		&tcp_configure();
#	Line 75 | Line 84 | while (1) {
84		else {
85		$delay = $next_tcp;
86		}
87	<	`sleep $delay`;
87	>	sleep $delay;
88		}
89
90		# we'll probably never get here...
#	Line 90 | Line 99 | exit(0);
99		#-----------------------------------------------------------------------
100		sub wait_then_retry() {
101		print "Will retry configuration with filter manager in $retry_wait seconds.\n";
102	<	`sleep $retry_wait`;
102	>	sleep $retry_wait;
103		}
104
105
#	Line 102 | Line 111 | sub wait_then_retry() {
111		#-----------------------------------------------------------------------
112		sub tcp_configure() {
113
114	<	while (1 == 1) {
114	>	while (1) {
115		my($sock) = new IO::Socket::INET(
116		PeerAddr => $filter_manager_addr,
117		PeerPort => $filter_manager_port,
#	Line 111 | Line 120 | sub tcp_configure() {
120		if (!defined $sock) {
121		print "IHOST ERROR: Could not connect to $filter_manager_addr:$filter_manager_port.\n";
122		print "Please check that there is an i-scream server at this address.\n";
114	–	close($sock);
123		wait_then_retry();
124		next;
125		}
#	Line 121 | Line 129 | sub tcp_configure() {
129
130		print $sock "STARTCONFIG\n";
131		$response = <$sock>;
132	<	if (!chop $response eq "OK") {
133	<	print "The i-scream server rejected the STARTCONFIG command.  Terminated.";
132	>	if ($response && !($response eq "OK\n")) {
133	>	print "The i-scream server rejected the STARTCONFIG command.\n";
134		close($sock);
135		wait_then_retry();
136		next;
#	Line 132 | Line 140 | sub tcp_configure() {
140
141		print $sock "LASTMODIFIED\n";
142		$response = <$sock>;
143	+	if (!$response) {
144	+	print "The i-scream server did not return anything for the LASTMODIFIED command.\n";
145	+	close($sock);
146	+	wait_then_retry();
147	+	next;
148	+	}
149		chop $response;
150		$last_modified = $response;
151
#	Line 139 | Line 153 | sub tcp_configure() {
153
154		print $sock "FILELIST\n";
155		$response = <$sock>;
156	+	if (!$response) {
157	+	print "The i-scream server did not provide a configuration file list.\n";
158	+	close($sock);
159	+	wait_then_retry();
160	+	next;
161	+	}
162		chop $response;
163		$file_list = $response;
164
#	Line 146 | Line 166 | sub tcp_configure() {
166
167		print $sock "FQDN\n";
168		$response = <$sock>;
169	+	if (!$response) {
170	+	print "The i-scream server did not tell us our FQDN.\n";
171	+	close($sock);
172	+	wait_then_retry();
173	+	next;
174	+	}
175		chop $response;
176		$fqdn = $response;
177
#	Line 153 | Line 179 | sub tcp_configure() {
179
180		print $sock "UDPUpdateTime\n";
181		$response = <$sock>;
182	+	if (!$response) {
183	+	print "The i-scream server did not give us a UDPUpdateTime.\n";
184	+	close($sock);
185	+	wait_then_retry();
186	+	next;
187	+	}
188		chop $response;
189		$udp_update_time = $response;
190
191		print $sock "TCPUpdateTime\n";
192		$response = <$sock>;
193	+	if (!$response) {
194	+	print "The i-scream server did not give us a TCPUpdateTime.\n";
195	+	close($sock);
196	+	wait_then_retry();
197	+	next;
198	+	}
199		chop $response;
200		$tcp_update_time = $response;
201
#	Line 165 | Line 203 | sub tcp_configure() {
203
204		print $sock "ENDCONFIG\n";
205		$response = <$sock>;
206	<	chomp $response;
169	<	if (!$response eq "OK") {
206	>	if ($response && !($response eq "OK\n")) {
207		print "ENDCONFIG command to server failed.  Terminated.\n";
208		close($sock);
209		wait_then_retry();
#	Line 177 | Line 214 | sub tcp_configure() {
214
215		print $sock "FILTER\n";
216		$response = <$sock>;
217	<	unless (defined($response)) {
217	>	if (!$response) {
218		print "Failed: Could not get a filter address from the filter manager.\n";
219		close($sock);
220		wait_then_retry();
221		next;
222		}
223		chop $response;
224	<	$response =~ /(.*);(.*);(.*)/;
224	>	$response =~ /^(.*);(.*);(.*)/;
225		if ($response eq "ERROR") {
226		print "There are no active configured filters for your host.\n";
227		close($sock);
#	Line 203 | Line 240 | sub tcp_configure() {
240
241		print $sock "END\n";
242		$response = <$sock>;
243	<	chop $response;
207	<	if ($response eq "OK") {
243	>	if ($response && ($response eq "OK\n")) {
244		print "Host successfully configured via TCP.\n"
245		}
246		else {
247	<	print "The server failed the host configuration on the END command.";
247	>	print "The server failed the host configuration on the END command.\n";
248		close($sock);
249		wait_then_retry();
250		next;
#	Line 223 | Line 259 | sub tcp_configure() {
259		}
260
261
226	–
227	–
262		#-----------------------------------------------------------------------
263		# send_udp_packet
264		# Sends a UDP packet to an i-scream filter.
#	Line 233 | Line 267 | sub tcp_configure() {
267		#-----------------------------------------------------------------------
268		sub send_udp_packet() {
269
270	<	my(@statgrab) = `./statgrab.pl`;
271	<	my(%packet);
272	<	for (my($i) = 0; $i <= $#statgrab; $i++) {
273	<	$statgrab[$i] =~ /^([^\s]*) (.*)$/;
274	<	$packet{$1} = $2;
270	>	my($plugins_dir) = "plugins";
271	>
272	>	opendir PLUGINS, $plugins_dir;
273	>	my(@plugins) = readdir PLUGINS;
274	>	foreach my $plugin (@plugins) {
275	>	push @data, `$plugins_dir/$plugin $ostype` if -x "$plugins_dir/$plugin" && -f "$plugins_dir/$plugin";
276		}
277
278	+	# get some extra data
279		my($date) = time;
280	+	my($ip);
281	+	$ip = inet_ntoa(scalar(gethostbyname(hostname())) || 'localhost') or $ip = 'localhost';
282
283	<	my($disk_info) = "<disk>";
284	<	my($i) = 0;
285	<	while (defined $packet{"packet.disk.p$i.attributes.mount"}) {
286	<	$disk_info .= "<p$i";
287	<	$disk_info .= " name=\"" . $packet{"packet.disk.p$i.attributes.name"} . "\"";
288	<	$disk_info .= " kbytes=\"" . $packet{"packet.disk.p$i.attributes.kbytes"} . "\"";
251	<	$disk_info .= " used=\"" . $packet{"packet.disk.p$i.attributes.used"} . "\"";
252	<	$disk_info .= " avail=\"" . $packet{"packet.disk.p$i.attributes.avail"} . "\"";
253	<	$disk_info .= " mount=\"" . $packet{"packet.disk.p$i.attributes.mount"} . "\"";
254	<	$disk_info .= "></p$i>";
255	<	++$i;
256	<	}
257	<	$disk_info .= "</disk>";
258	<
259	<	my($ip) = inet_ntoa(scalar(gethostbyname(hostname())) || 'localhost');
260	<
261	<	# Build the XML packet this way, as we can clearly
262	<	# see the structure and contents... I like this ;-)
263	<	# [Note that the server rejects UDP packets that are
264	<	# larger than 8196 bytes]
265	<	my($xml) = <<EOF;
283	>	# add some extra data to the array
284	>	push(@data, "packet.attributes.seq_no $seq_no");
285	>	push(@data, "packet.attributes.machine_name $fqdn");
286	>	push(@data, "packet.attributes.date $date");
287	>	push(@data, "packet.attributes.type data");
288	>	push(@data, "packet.attributes.ip $ip");
289
290	<	<packet seq_no="$seq_no" machine_name="$fqdn" date="$date" type="data" ip="$ip">
291	<	<load>
269	<	<load1>$packet{"packet.load.load1"}</load1>
270	<	<load5>$packet{"packet.load.load5"}</load5>
271	<	<load15>$packet{"packet.load.load15"}</load15>
272	<	</load>
273	<	<os>
274	<	<name>$packet{"packet.os.name"}</name>
275	<	<release>$packet{"packet.os.release"}</release>
276	<	<platform>$packet{"packet.os.platform"}</platform>
277	<	<sysname>$packet{"packet.os.sysname"}</sysname>
278	<	<version>$packet{"packet.os.version"}</version>
279	<	<uptime>$packet{"packet.os.uptime"}</uptime>
280	<	</os>
281	<	<users>
282	<	<count>$packet{"packet.users.count"}</count>
283	<	<list>$packet{"packet.users.list"}</list>
284	<	</users>
285	<	<processes>
286	<	<total>$packet{"packet.processes.total"}</total>
287	<	<sleeping>$packet{"packet.processes.sleeping"}</sleeping>
288	<	<zombie>$packet{"packet.processes.zombie"}</zombie>
289	<	<stopped>$packet{"packet.processes.stopped"}</stopped>
290	<	<cpu>$packet{"packet.processes.cpu"}</cpu>
291	<	</processes>
292	<	<cpu>
293	<	<idle>$packet{"packet.cpu.idle"}</idle>
294	<	<user>$packet{"packet.cpu.user"}</user>
295	<	<kernel>$packet{"packet.cpu.kernel"}</kernel>
296	<	<iowait>$packet{"packet.cpu.iowait"}</iowait>
297	<	<swap>$packet{"packet.cpu.swap"}</swap>
298	<	</cpu>
299	<	<memory>
300	<	<total>$packet{"packet.memory.total"}</total>
301	<	<free>$packet{"packet.memory.free"}</free>
302	<	</memory>
303	<	<swap>
304	<	<total>$packet{"packet.swap.total"}</total>
305	<	<free>$packet{"packet.swap.free"}</free>
306	<	</swap>
307	<	$disk_info
308	<	</packet>
290	>	# sort the data
291	>	@data = sort(grep(!/^$/, grep(/^packet\./, @data)));
292
293	<	EOF
293	>	# turn the array into some nice XML
294	>	my($xml) = &make_xml("", "");
295
312	–	# Make the packet smaller by stripping out newlines and leading spaces.
313	–	$xml =~ s/\n\s*//g;
314	–
296		my($sock) = new IO::Socket::INET (
297		PeerPort => $udp_port,
298		PeerAddr => $filter_addr,
299		Proto => 'udp'
300		) or die "Could not send UDP: $!\n";
301	<
301	>
302		print $sock $xml or die "Could not send UDP packet: $!\n";
303		close($sock);
304		$seq_no++;
#	Line 327 | Line 308 | EOF
308		}
309
310
330	–
331	–
311		#-----------------------------------------------------------------------
312		# send_tcp_heartbeat
313		# Establishes a TCP connection to an i-scream filter.
314		# The heartbeat is used as a guaranteed "I'm alive" delivery mechanism.
315	+	# If we need to reconfigure, then we complete the heartbeat before
316	+	# doing so.
317		#-----------------------------------------------------------------------
318		sub send_tcp_heartbeat() {
319
320	+	my ($doReconfigure) = 0;
321	+
322		my($sock) = new IO::Socket::INET(
323		PeerAddr => $filter_addr,
324		PeerPort => $tcp_port,
#	Line 352 | Line 335 | sub send_tcp_heartbeat() {
335
336		print $sock "HEARTBEAT\n";
337		$response = <$sock>;
338	<	return if (!defined $response);
356	<	chop $response;
357	<	if (!$response eq "OK") {
338	>	if (!$response eq "OK\n") {
339		close($sock);
340		print "Server gave wrong response to HEARTBEAT: $response\n";
341		&tcp_configure();
#	Line 363 | Line 344 | sub send_tcp_heartbeat() {
344
345		print $sock "CONFIG\n";
346		$response = <$sock>;
347	<	return if (!defined $response);
367	<	chop $response;
368	<	if (!$response eq "OK") {
347	>	if (!$response eq "OK\n") {
348		close($sock);
349		print "Server gave wrong response to CONFIG: $response\n";
350		&tcp_configure();
#	Line 374 | Line 353 | sub send_tcp_heartbeat() {
353
354		print $sock "$file_list\n";
355		$response = <$sock>;
356	<	return if (!defined $response);
378	<	chop $response;
379	<	if (!$response eq "OK") {
356	>	if (!$response eq "OK\n") {
357		close($sock);
358		print "Server gave wrong response to file list: $response\n";
359		&tcp_configure();
#	Line 385 | Line 362 | sub send_tcp_heartbeat() {
362
363		print $sock "$last_modified\n";
364		$response = <$sock>;
365	<	return if (!defined $response);
389	<	chop $response;
390	<	if ($response eq "ERROR") {
365	>	if ($response eq "ERROR\n") {
366		close($sock);
367		print "Server configuration changed.  Reconfiguring with filter manager.\n";
368	<	&tcp_configure();
394	<	return;
368	>	$doReconfigure = 1;
369		}
370	<	if (!$response eq "OK") {
370	>	if (!$response eq "OK\n") {
371		close($sock);
372		print "Server gave wrong response to HEARTBEAT: $response\n";
373		&tcp_configure();
#	Line 402 | Line 376 | sub send_tcp_heartbeat() {
376
377		print $sock "ENDHEARTBEAT\n";
378		$response = <$sock>;
379	<	return if (!defined $response);
406	<	chop $response;
407	<	if (!$response eq "OK") {
379	>	if (!$response eq "OK\n") {
380		close($sock);
381		print "Server gave wrong response to ENDHEARTBEAT: $response\n";
382		&tcp_configure();
#	Line 414 | Line 386 | sub send_tcp_heartbeat() {
386		close($sock);
387		print "^";
388
389	+	&tcp_configure() if $doReconfigure;
390	+
391		return;
392		}
393
394	+
395		#-----------------------------------------------------------------------
396		# write_pid
397		# Writes the PID (process ID) of this instance to $pidfile.
#	Line 428 | Line 403 | sub write_pid() {
403		close PID;
404
405		return;
406	+	}
407	+
408	+	#-----------------------------------------------------------------------
409	+	# make_xml
410	+	# Turns an array of plugins data into an XML string.
411	+	#-----------------------------------------------------------------------
412	+	sub make_xml() {
413	+	my($curlevel, $curline) = @_;
414	+	my($xmltemp) = ""; my($curtag) = ""; my($attributes) = "";
415	+	while(1) {
416	+	$curline = shift(@data) if $curline eq "";
417	+	return $xmltemp if not defined $curline;
418	+	chomp $curline;
419	+	# dealing with nest (or attributes)
420	+	if($curline =~ /^$curlevel([^\.\s]+\.)/) {
421	+	$curtag=$1;
422	+	if($curline =~ /^$curlevel$curtag([^\.\s]+)\s+(.*)$/) {
423	+	$xmltemp .= &make_xml("$curlevel$curtag", $curline);
424	+	}
425	+	elsif($curline =~ /^$curlevel$curtag(attributes)\.([^\.\s]+)\s+(.*)$/) {
426	+	$attributes .= " $2=\"$3\"";
427	+	}
428	+	else {
429	+	$xmltemp .= &make_xml("$curlevel$curtag", $curline);
430	+	}
431	+	my($nextline) = $data[0]; chomp $nextline if defined $nextline;
432	+	$curtag =~ s/(.*)\./$1/;
433	+	if((defined $nextline) && ($nextline =~ /^$curlevel$curtag\./)) {
434	+	$curline = "";
435	+	}
436	+	else {
437	+	$xmltemp = "<$curtag$attributes>$xmltemp</$curtag>" unless $curtag eq "";
438	+	return $xmltemp;
439	+	}
440	+	}
441	+	# dealing with value
442	+	elsif($curline =~ /^$curlevel([^\.\s]+)\s+(.*)$/) {
443	+	$curtag=$1;
444	+	$xmltemp=$2;
445	+	my($nextline) = $data[0]; chomp $nextline if defined $nextline;
446	+	if(defined $nextline && ($nextline =~ /^$curlevel$curtag\./ || $nextline =~ /^$curlevel$curtag\s+/)) {
447	+	$curline = "";
448	+	}
449	+	else {
450	+	$xmltemp = "<$curtag$attributes>$xmltemp</$curtag>" unless $curtag eq "";
451	+	return $xmltemp;
452	+	}
453	+	}
454	+	# dealing with a null value
455	+	elsif($curline =~ /^$curlevel([^\.\s]+)$/) {
456	+	# simply adding a space makes the above elsif deal with it :)
457	+	# just level with an empty tag in the XML
458	+	$curline .= " ";
459	+	}
460	+	# failing all that, skip the line
461	+	else {
462	+	$curline = "";
463	+	}
464	+	}
465		}

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