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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 1.47 by tdb, Thu Mar 21 17:57:13 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	+	$key
38	+	@data
39		);
40
41		if (@ARGV != 2) {
#	Line 45 | Line 46 | $filter_manager_addr = $ARGV[0];
46		$filter_manager_port = $ARGV[1];
47
48		$seq_no = 1;
49	<	$retry_wait = 600;
49	>	$retry_wait = 60;
50
51	+	# work out our platform, if we can.
52	+	$ostype = `uname -s`;
53	+	chomp $ostype;
54	+	$ostype = "unknown" if not defined $ostype;
55	+
56		# write our PID to a file
57	<	$pidfile = "/var/tmp/ihost.pid";
57	>	# use home dir by default
58	>	#$pidfile = $ENV{"HOME"};
59	>	# or drop it in /var/tmp if we can't find HOME
60	>	$pidfile = "/var/tmp" if not defined $pidfile;
61	>	$pidfile .= "/.ihost.pid";
62		&write_pid();
63
64		&tcp_configure();
65	+	&send_tcp_heartbeat();
66		&send_udp_packet();
67
68		$last_udp_time = time;
#	Line 75 | Line 86 | while (1) {
86		else {
87		$delay = $next_tcp;
88		}
89	<	`sleep $delay`;
89	>	sleep $delay;
90		}
91
92		# we'll probably never get here...
#	Line 90 | Line 101 | exit(0);
101		#-----------------------------------------------------------------------
102		sub wait_then_retry() {
103		print "Will retry configuration with filter manager in $retry_wait seconds.\n";
104	<	`sleep $retry_wait`;
104	>	sleep $retry_wait;
105		}
106
107
#	Line 102 | Line 113 | sub wait_then_retry() {
113		#-----------------------------------------------------------------------
114		sub tcp_configure() {
115
116	<	while (1 == 1) {
116	>	while (1) {
117		my($sock) = new IO::Socket::INET(
118		PeerAddr => $filter_manager_addr,
119		PeerPort => $filter_manager_port,
#	Line 111 | Line 122 | sub tcp_configure() {
122		if (!defined $sock) {
123		print "IHOST ERROR: Could not connect to $filter_manager_addr:$filter_manager_port.\n";
124		print "Please check that there is an i-scream server at this address.\n";
114	–	close($sock);
125		wait_then_retry();
126		next;
127		}
#	Line 121 | Line 131 | sub tcp_configure() {
131
132		print $sock "STARTCONFIG\n";
133		$response = <$sock>;
134	<	if (!chop $response eq "OK") {
135	<	print "The i-scream server rejected the STARTCONFIG command.  Terminated.";
134	>	if ($response && !($response eq "OK\n")) {
135	>	print "The i-scream server rejected the STARTCONFIG command.\n";
136		close($sock);
137		wait_then_retry();
138		next;
#	Line 132 | Line 142 | sub tcp_configure() {
142
143		print $sock "LASTMODIFIED\n";
144		$response = <$sock>;
145	+	if (!$response) {
146	+	print "The i-scream server did not return anything for the LASTMODIFIED command.\n";
147	+	close($sock);
148	+	wait_then_retry();
149	+	next;
150	+	}
151		chop $response;
152		$last_modified = $response;
153
#	Line 139 | Line 155 | sub tcp_configure() {
155
156		print $sock "FILELIST\n";
157		$response = <$sock>;
158	+	if (!$response) {
159	+	print "The i-scream server did not provide a configuration file list.\n";
160	+	close($sock);
161	+	wait_then_retry();
162	+	next;
163	+	}
164		chop $response;
165		$file_list = $response;
166
#	Line 146 | Line 168 | sub tcp_configure() {
168
169		print $sock "FQDN\n";
170		$response = <$sock>;
171	+	if (!$response) {
172	+	print "The i-scream server did not tell us our FQDN.\n";
173	+	close($sock);
174	+	wait_then_retry();
175	+	next;
176	+	}
177		chop $response;
178		$fqdn = $response;
179
#	Line 153 | Line 181 | sub tcp_configure() {
181
182		print $sock "UDPUpdateTime\n";
183		$response = <$sock>;
184	+	if (!$response) {
185	+	print "The i-scream server did not give us a UDPUpdateTime.\n";
186	+	close($sock);
187	+	wait_then_retry();
188	+	next;
189	+	}
190		chop $response;
191		$udp_update_time = $response;
192
193		print $sock "TCPUpdateTime\n";
194		$response = <$sock>;
195	+	if (!$response) {
196	+	print "The i-scream server did not give us a TCPUpdateTime.\n";
197	+	close($sock);
198	+	wait_then_retry();
199	+	next;
200	+	}
201		chop $response;
202		$tcp_update_time = $response;
203
#	Line 165 | Line 205 | sub tcp_configure() {
205
206		print $sock "ENDCONFIG\n";
207		$response = <$sock>;
208	<	chomp $response;
169	<	if (!$response eq "OK") {
208	>	if ($response && !($response eq "OK\n")) {
209		print "ENDCONFIG command to server failed.  Terminated.\n";
210		close($sock);
211		wait_then_retry();
#	Line 177 | Line 216 | sub tcp_configure() {
216
217		print $sock "FILTER\n";
218		$response = <$sock>;
219	<	unless (defined($response)) {
219	>	if (!$response) {
220		print "Failed: Could not get a filter address from the filter manager.\n";
221		close($sock);
222		wait_then_retry();
223		next;
224		}
225		chop $response;
226	<	$response =~ /(.*);(.*);(.*)/;
226	>	$response =~ /^(.*);(.*);(.*)/;
227		if ($response eq "ERROR") {
228		print "There are no active configured filters for your host.\n";
229		close($sock);
#	Line 203 | Line 242 | sub tcp_configure() {
242
243		print $sock "END\n";
244		$response = <$sock>;
245	<	chop $response;
207	<	if ($response eq "OK") {
245	>	if ($response && ($response eq "OK\n")) {
246		print "Host successfully configured via TCP.\n"
247		}
248		else {
249	<	print "The server failed the host configuration on the END command.";
249	>	print "The server failed the host configuration on the END command.\n";
250		close($sock);
251		wait_then_retry();
252		next;
#	Line 223 | Line 261 | sub tcp_configure() {
261		}
262
263
226	–
227	–
264		#-----------------------------------------------------------------------
265		# send_udp_packet
266		# Sends a UDP packet to an i-scream filter.
#	Line 233 | Line 269 | sub tcp_configure() {
269		#-----------------------------------------------------------------------
270		sub send_udp_packet() {
271
272	<	my(@statgrab) = `./statgrab.pl`;
273	<	my(%packet);
274	<	for (my($i) = 0; $i <= $#statgrab; $i++) {
275	<	$statgrab[$i] =~ /^([^\s]*) (.*)$/;
276	<	$packet{$1} = $2;
272	>	my($plugins_dir) = "plugins";
273	>
274	>	opendir PLUGINS, $plugins_dir;
275	>	my(@plugins) = readdir PLUGINS;
276	>	foreach my $plugin (@plugins) {
277	>	push @data, `$plugins_dir/$plugin $ostype` if -x "$plugins_dir/$plugin" && -f "$plugins_dir/$plugin";
278		}
279
280	+	# get some extra data
281		my($date) = time;
282	+	my($ip);
283	+	$ip = inet_ntoa(scalar(gethostbyname(hostname())) || 'localhost') or $ip = 'localhost';
284
285	<	my($disk_info) = "<disk>";
286	<	my($i) = 0;
287	<	while (defined $packet{"packet.disk.p$i.attributes.mount"}) {
288	<	$disk_info .= "<p$i";
289	<	$disk_info .= " name=\"" . $packet{"packet.disk.p$i.attributes.name"} . "\"";
290	<	$disk_info .= " kbytes=\"" . $packet{"packet.disk.p$i.attributes.kbytes"} . "\"";
291	<	$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;
285	>	# add some extra data to the array
286	>	push(@data, "packet.attributes.seq_no $seq_no");
287	>	push(@data, "packet.attributes.machine_name $fqdn");
288	>	push(@data, "packet.attributes.date $date");
289	>	push(@data, "packet.attributes.type data");
290	>	push(@data, "packet.attributes.ip $ip");
291	>	push(@data, "packet.attributes.key $key");
292
293	<	<packet seq_no="$seq_no" machine_name="$fqdn" date="$date" type="data" ip="$ip">
294	<	<load>
269	<	<load1>$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	<	$disk_info
308	<	</packet>
293	>	# sort the data
294	>	@data = sort(grep(!/^$/, grep(/^packet\./, @data)));
295
296	<	EOF
296	>	# turn the array into some nice XML
297	>	my($xml) = &make_xml("", "");
298
312	–	# Make the packet smaller by stripping out newlines and leading spaces.
313	–	$xml =~ s/\n\s*//g;
314	–
299		my($sock) = new IO::Socket::INET (
300		PeerPort => $udp_port,
301		PeerAddr => $filter_addr,
302		Proto => 'udp'
303		) or die "Could not send UDP: $!\n";
304	<
304	>
305		print $sock $xml or die "Could not send UDP packet: $!\n";
306		close($sock);
307		$seq_no++;
#	Line 327 | Line 311 | EOF
311		}
312
313
330	–
331	–
314		#-----------------------------------------------------------------------
315		# send_tcp_heartbeat
316		# Establishes a TCP connection to an i-scream filter.
317		# The heartbeat is used as a guaranteed "I'm alive" delivery mechanism.
318	+	# If we need to reconfigure, then we complete the heartbeat before
319	+	# doing so.
320		#-----------------------------------------------------------------------
321		sub send_tcp_heartbeat() {
322
323	+	my ($doReconfigure) = 0;
324	+
325		my($sock) = new IO::Socket::INET(
326		PeerAddr => $filter_addr,
327		PeerPort => $tcp_port,
#	Line 352 | Line 338 | sub send_tcp_heartbeat() {
338
339		print $sock "HEARTBEAT\n";
340		$response = <$sock>;
341	<	return if (!defined $response);
356	<	chop $response;
357	<	if (!$response eq "OK") {
341	>	if (!$response eq "OK\n") {
342		close($sock);
343		print "Server gave wrong response to HEARTBEAT: $response\n";
344		&tcp_configure();
#	Line 363 | Line 347 | sub send_tcp_heartbeat() {
347
348		print $sock "CONFIG\n";
349		$response = <$sock>;
350	<	return if (!defined $response);
367	<	chop $response;
368	<	if (!$response eq "OK") {
350	>	if (!$response eq "OK\n") {
351		close($sock);
352		print "Server gave wrong response to CONFIG: $response\n";
353		&tcp_configure();
#	Line 374 | Line 356 | sub send_tcp_heartbeat() {
356
357		print $sock "$file_list\n";
358		$response = <$sock>;
359	<	return if (!defined $response);
378	<	chop $response;
379	<	if (!$response eq "OK") {
359	>	if (!$response eq "OK\n") {
360		close($sock);
361		print "Server gave wrong response to file list: $response\n";
362		&tcp_configure();
#	Line 385 | Line 365 | sub send_tcp_heartbeat() {
365
366		print $sock "$last_modified\n";
367		$response = <$sock>;
368	<	return if (!defined $response);
389	<	chop $response;
390	<	if ($response eq "ERROR") {
368	>	if ($response eq "ERROR\n") {
369		close($sock);
370		print "Server configuration changed.  Reconfiguring with filter manager.\n";
371	<	&tcp_configure();
394	<	return;
371	>	$doReconfigure = 1;
372		}
373	<	if (!$response eq "OK") {
373	>	if (!$response eq "OK\n") {
374		close($sock);
375		print "Server gave wrong response to HEARTBEAT: $response\n";
376		&tcp_configure();
377		return;
378		}
379
380	+	print $sock "KEY\n";
381	+	$key = <$sock>;
382	+
383		print $sock "ENDHEARTBEAT\n";
384		$response = <$sock>;
385	<	return if (!defined $response);
406	<	chop $response;
407	<	if (!$response eq "OK") {
385	>	if (!$response eq "OK\n") {
386		close($sock);
387		print "Server gave wrong response to ENDHEARTBEAT: $response\n";
388		&tcp_configure();
#	Line 414 | Line 392 | sub send_tcp_heartbeat() {
392		close($sock);
393		print "^";
394
395	+	&tcp_configure() if $doReconfigure;
396	+
397		return;
398		}
399
400	+
401		#-----------------------------------------------------------------------
402		# write_pid
403		# Writes the PID (process ID) of this instance to $pidfile.
#	Line 428 | Line 409 | sub write_pid() {
409		close PID;
410
411		return;
412	+	}
413	+
414	+	#-----------------------------------------------------------------------
415	+	# make_xml
416	+	# Turns an array of plugins data into an XML string.
417	+	#-----------------------------------------------------------------------
418	+	sub make_xml() {
419	+	my($curlevel, $curline) = @_;
420	+	my($xmltemp) = ""; my($curtag) = ""; my($attributes) = "";
421	+	while(1) {
422	+	$curline = shift(@data) if $curline eq "";
423	+	return $xmltemp if not defined $curline;
424	+	chomp $curline;
425	+	# dealing with nest (or attributes)
426	+	if($curline =~ /^$curlevel([^\.\s]+\.)/) {
427	+	$curtag=$1;
428	+	if($curline =~ /^$curlevel$curtag([^\.\s]+)\s+(.*)$/) {
429	+	$xmltemp .= &make_xml("$curlevel$curtag", $curline);
430	+	}
431	+	elsif($curline =~ /^$curlevel$curtag(attributes)\.([^\.\s]+)\s+(.*)$/) {
432	+	$attributes .= " $2=\"$3\"";
433	+	}
434	+	else {
435	+	$xmltemp .= &make_xml("$curlevel$curtag", $curline);
436	+	}
437	+	my($nextline) = $data[0]; chomp $nextline if defined $nextline;
438	+	$curtag =~ s/(.*)\./$1/;
439	+	if((defined $nextline) && ($nextline =~ /^$curlevel$curtag\./)) {
440	+	$curline = "";
441	+	}
442	+	else {
443	+	$xmltemp = "<$curtag$attributes>$xmltemp</$curtag>" unless $curtag eq "";
444	+	return $xmltemp;
445	+	}
446	+	}
447	+	# dealing with value
448	+	elsif($curline =~ /^$curlevel([^\.\s]+)\s+(.*)$/) {
449	+	$curtag=$1;
450	+	$xmltemp=$2;
451	+	my($nextline) = $data[0]; chomp $nextline if defined $nextline;
452	+	if(defined $nextline && ($nextline =~ /^$curlevel$curtag\./ || $nextline =~ /^$curlevel$curtag\s+/)) {
453	+	$curline = "";
454	+	}
455	+	else {
456	+	$xmltemp = "<$curtag$attributes>$xmltemp</$curtag>" unless $curtag eq "";
457	+	return $xmltemp;
458	+	}
459	+	}
460	+	# dealing with a null value
461	+	elsif($curline =~ /^$curlevel([^\.\s]+)$/) {
462	+	# simply adding a space makes the above elsif deal with it :)
463	+	# just level with an empty tag in the XML
464	+	$curline .= " ";
465	+	}
466	+	# failing all that, skip the line
467	+	else {
468	+	$curline = "";
469	+	}
470	+	}
471		}

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