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Comparing projects/cms/source/host/ihost-perl/ihost.pl (file contents):
Revision 1.11 by pjm2, Thu Feb 1 09:10:52 2001 UTC vs.
Revision 1.44 by tdb, Tue Dec 18 04:07:17 2001 UTC

#	Line 2 | Line 2
2
3		# -----------------------------------------------------------
4		# Perl i-scream Host.
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
8	<	# methods as you see fit.
9	<	#  - pjm2@ukc.ac.uk
8	>	# a typical Unix/Linux box.
9		#
10		# $Author$
11		# $Id$
#	Line 31 | Line 30 | use vars qw (
30		$tcp_port
31		$filter_addr
32		$file_list
33	+	$fqdn
34	+	$pidfile
35	+	$retry_wait
36	+	$ostype
37	+	@data
38		);
39
40		if (@ARGV != 2) {
#	Line 41 | Line 45 | $filter_manager_addr = $ARGV[0];
45		$filter_manager_port = $ARGV[1];
46
47		$seq_no = 1;
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 $ostype;
54	+
55	+	# write our PID to a file
56	+	# use home dir by default
57	+	#$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();
64		&send_udp_packet();
65
#	Line 66 | 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...
91	+	`rm -f $pidfile`;
92		exit(0);
93
94	+
95	+	#-----------------------------------------------------------------------
96	+	# wait_then_retry
97	+	# Waits for the period of time specified in $retry_wait, then attempts
98	+	# to reconfigure with the server.
99	+	#-----------------------------------------------------------------------
100	+	sub wait_then_retry() {
101	+	print "Will retry configuration with filter manager in $retry_wait seconds.\n";
102	+	sleep $retry_wait;
103	+	}
104	+
105	+
106	+	#-----------------------------------------------------------------------
107	+	# tcp_configure
108	+	# Establishes a TCP connection to the specified i-scream filter manager.
109	+	# The host then requests details from the server, such as the intervals
110	+	# at which to send UDP packets.
111	+	#-----------------------------------------------------------------------
112		sub tcp_configure() {
113
114	<	my($sock) = new IO::Socket::INET(
115	<	PeerAddr => $filter_manager_addr,
116	<	PeerPort => $filter_manager_port,
117	<	Proto => 'tcp'
118	<	);
119	<	if (!defined $sock) {
120	<	print "IHOST ERROR: Could not connect to $filter_manager_addr:$filter_manager_port.\n";
121	<	print "Please check that there is an i-scream server at this address.\n";
122	<	print "Program ended.\n";
123	<	exit(1);
124	<	}
114	>	while (1) {
115	>	my($sock) = new IO::Socket::INET(
116	>	PeerAddr => $filter_manager_addr,
117	>	PeerPort => $filter_manager_port,
118	>	Proto => 'tcp'
119	>	) or die "Cannot connect!";
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";
123	>	wait_then_retry();
124	>	next;
125	>	}
126
127	<	# Now run through the configuration process.
128	<	my($response);
127	>	# Now run through the configuration process...
128	>	my($response);
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.";
134	<	exit(1);
135	<	}
130	>	print $sock "STARTCONFIG\n";
131	>	$response = <$sock>;
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;
137	>	}
138
139	<	print "Config started okay.\n";
139	>	print "Config started okay.\n";
140
141	<	print $sock "LASTMODIFIED\n";
142	<	$response = <$sock>;
143	<	chop $response;
144	<	$last_modified = $response;
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
152	<	print "Config last modified: ". (scalar localtime $last_modified/1000) . "\n";
152	>	print "Config last modified: ". (scalar localtime $last_modified/1000) . "\n";
153
154	<	print $sock "FILELIST\n";
155	<	$response = <$sock>;
156	<	chop $response;
157	<	$file_list = $response;
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
165	<	print "File list obtained: $file_list\n";
165	>	print "File list obtained: $file_list\n";
166
167	<	print $sock "UDPUpdateTime\n";
168	<	$response = <$sock>;
169	<	chop $response;
170	<	$udp_update_time = $response;
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
178	<	print $sock "TCPUpdateTime\n";
179	<	$response = <$sock>;
180	<	chop $response;
181	<	$tcp_update_time = $response;
178	>	print "FQDN returned: $fqdn\n";
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
202	<	print "UDP packet period: $udp_update_time seconds.\nTCP heartbeat period: $tcp_update_time seconds.\n";
202	>	print "UDP packet period: $udp_update_time seconds.\nTCP heartbeat period: $tcp_update_time seconds.\n";
203
204	<	print $sock "ENDCONFIG\n";
205	<	$response = <$sock>;
206	<	chomp $response;
207	<	if (!$response eq "OK") {
208	<	print "ENDCONFIG command to server failed.  Terminated.\n";
209	<	exit(1);
210	<	}
204	>	print $sock "ENDCONFIG\n";
205	>	$response = <$sock>;
206	>	if ($response && !($response eq "OK\n")) {
207	>	print "ENDCONFIG command to server failed.  Terminated.\n";
208	>	close($sock);
209	>	wait_then_retry();
210	>	next;
211	>	}
212
213	<	print "Config ended.\n";
213	>	print "Config ended.\n";
214
215	<	print $sock "FILTER\n";
216	<	$response = <$sock>;
217	<	chop $response;
218	<	$response =~ /(.*);(.*);(.*)/;
219	<	($filter_addr, $udp_port, $tcp_port) = ($1, $2, $3);
215	>	print $sock "FILTER\n";
216	>	$response = <$sock>;
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	>	$response =~ /^(.*);(.*);(.*)/;
225	>	if ($response eq "ERROR") {
226	>	print "There are no active configured filters for your host.\n";
227	>	close($sock);
228	>	wait_then_retry();
229	>	next;
230	>	}
231	>	($filter_addr, $udp_port, $tcp_port) = ($1, $2, $3);
232	>	unless (defined($filter_addr) && defined($udp_port) && defined($tcp_port)) {
233	>	print "Failed: Filter address response from server did not make sense: $response\n";
234	>	close($sock);
235	>	wait_then_retry();
236	>	next;
237	>	}
238
239	<	print "Got filter data ($filter_addr, $udp_port, $tcp_port)\n";
239	>	print "Got filter data ($filter_addr, $udp_port, $tcp_port)\n";
240
241	<	print $sock "END\n";
242	<	$response = <$sock>;
243	<	chop $response;
244	<	if ($response eq "OK") {
245	<	print "Host successfully configured via TCP.\n"
246	<	}
247	<	else {
248	<	print "The server failed the host configuration on the END command.";
249	<	exit(1);
250	<	}
241	>	print $sock "END\n";
242	>	$response = <$sock>;
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.\n";
248	>	close($sock);
249	>	wait_then_retry();
250	>	next;
251	>	}
252
253	<	close($sock);
253	>	close($sock);
254
255	<	print "Configuration finished sucessfully!\n";
255	>	print "Configuration finished sucessfully!\n";
256	>	last;
257	>	}
258	>	return;
259		}
260
261	+
262	+	#-----------------------------------------------------------------------
263	+	# send_udp_packet
264	+	# Sends a UDP packet to an i-scream filter.
265	+	# The packet contains XML markup describing some of the machine's state.
266	+	# Receipt of UDP packets is not guaranteed.
267	+	#-----------------------------------------------------------------------
268		sub send_udp_packet() {
269
270	<	my(@statgrab) = `./statgrab.pl`;
271	<	my(%packet);
272	<	for (my($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	<	$disk_info .= qq/<name>$packet{"packet.disk.p$i.attributes.name"}<\/name>/;
288	<	$disk_info .= qq/<kbytes>$packet{"packet.disk.p$i.attributes.kbytes"}<\/kbytes>/;
177	<	$disk_info .= qq/<used>$packet{"packet.disk.p$i.attributes.used"}<\/used>/;
178	<	$disk_info .= qq/<avail>$packet{"packet.disk.p$i.attributes.avail"}<\/avail>/;
179	<	$disk_info .= qq/<mount>$packet{"packet.disk.p$i.attributes.mount"}<\/mount>/;
180	<	$disk_info .= "</p$i>";
181	<	++$i;
182	<	}
183	<	$disk_info .= "</disk>";
184	<
185	<	my($hostname) = hostname();
186	<	$hostname =~ s/\..*$//g;
187	<	`cat /etc/resolv.conf` =~ /domain\s+([^\s]+)/;
188	<	my($domainname) = $1;
189	<	my($machine_name) = "$hostname.$domainname";
190	<	my($ip) = inet_ntoa(scalar(gethostbyname($hostname)) || 'localhost');
191	<
192	<	# Build the XML packet this way, as we can clearly
193	<	# see the structure and contents... I like this ;-)
194	<	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="$machine_name" date="$date" type="data" ip="$ip">
291	<	<load>
198	<	<load1>$packet{"packet.load.load1"}</load1>
199	<	<load5>$packet{"packet.load.load5"}</load5>
200	<	<load15>$packet{"packet.load.load15"}</load15>
201	<	</load>
202	<	<os>
203	<	<name>$packet{"packet.os.name"}</name>
204	<	<release>$packet{"packet.os.release"}</release>
205	<	<platform>$packet{"packet.os.platform"}</platform>
206	<	<sysname>$packet{"packet.os.sysname"}</sysname>
207	<	<version>$packet{"packet.os.version"}</version>
208	<	<uptime>$packet{"packet.os.uptime"}</uptime>
209	<	</os>
210	<	<users>
211	<	<count>$packet{"packet.users.count"}</count>
212	<	<list>$packet{"packet.users.list"}</list>
213	<	</users>
214	<	<processes>
215	<	<total>$packet{"packet.processes.total"}</total>
216	<	<sleeping>$packet{"packet.processes.sleeping"}</sleeping>
217	<	<zombie>$packet{"packet.processes.zombie"}</zombie>
218	<	<stopped>$packet{"packet.processes.stopped"}</stopped>
219	<	<cpu>$packet{"packet.processes.cpu"}</cpu>
220	<	</processes>
221	<	<cpu>
222	<	<idle>$packet{"packet.cpu.idle"}</idle>
223	<	<user>$packet{"packet.cpu.user"}</user>
224	<	<kernel>$packet{"packet.cpu.kernel"}</kernel>
225	<	<iowait>$packet{"packet.cpu.iowait"}</iowait>
226	<	<swap>$packet{"packet.cpu.swap"}</swap>
227	<	</cpu>
228	<	<memory>
229	<	<total>$packet{"packet.memory.real"}</total>
230	<	<free>$packet{"packet.memory.free"}</free>
231	<	</memory>
232	<	<swap>
233	<	<total>$packet{"packet.memory.swap_total"}</total>
234	<	<free>$packet{"packet.memory.swap_free"}</free>
235	<	</swap>
236	<	$disk_info
237	<	</packet>
290	>	# sort the data
291	>	@data = sort(grep(!/^$/, grep(/^packet\./, @data)));
292
293	<	EOF
293	>	# turn the array into some nice XML
294	>	my($xml) = &make_xml("", "");
295
241	–	$xml =~ s/\n\s*//g;
242	–
296		my($sock) = new IO::Socket::INET (
297		PeerPort => $udp_port,
298		PeerAddr => $filter_addr,
299		Proto => 'udp'
300	<	) or die "Socket: $!\n";
301	<
300	>	) or die "Could not send UDP: $!\n";
301	>
302		print $sock $xml or die "Could not send UDP packet: $!\n";
303		close($sock);
304		$seq_no++;
305		print "-";
306	+
307	+	return;
308		}
309
310	+
311	+	#-----------------------------------------------------------------------
312	+	# send_tcp_heartbeat
313	+	# Establishes a TCP connection to an i-scream filter.
314	+	# The heartbeat is used as a guaranteed "I'm alive" delivery mechanism.
315	+	# If we need to reconfigure, then we complete the heartbeat before
316	+	# doing so.
317	+	#-----------------------------------------------------------------------
318		sub send_tcp_heartbeat() {
319
320	+	my ($doReconfigure) = 0;
321	+
322		my($sock) = new IO::Socket::INET(
323		PeerAddr => $filter_addr,
324		PeerPort => $tcp_port,
325		Proto => 'tcp'
326	<	);
326	>	) or return;
327		if (!defined $sock) {
328		print "IHOST WARNING: Failed to deliver a heartbeat to the i-scream filter.\n";
329	+	&tcp_configure();
330		return;
331		}
332
#	Line 269 | Line 335 | sub send_tcp_heartbeat() {
335
336		print $sock "HEARTBEAT\n";
337		$response = <$sock>;
338	<	chop $response;
273	<	if (!$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();
342		return;
343		}
344
345		print $sock "CONFIG\n";
346		$response = <$sock>;
347	<	chop $response;
282	<	if (!$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();
351		return;
352		}
353
354		print $sock "$file_list\n";
355		$response = <$sock>;
356	<	chop $response;
291	<	if (!$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();
360		return;
361		}
362
363		print $sock "$last_modified\n";
364		$response = <$sock>;
365	<	chop $response;
300	<	if ($response eq "ERROR") {
365	>	if ($response eq "ERROR\n") {
366		close($sock);
367	<	&tcp_configure();
368	<	return;
367	>	print "Server configuration changed.  Reconfiguring with filter manager.\n";
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();
374		return;
375		}
376
377		print $sock "ENDHEARTBEAT\n";
378		$response = <$sock>;
379	<	chop $response;
314	<	if (!$response eq "OK") {
379	>	if (!$response eq "OK\n") {
380		close($sock);
381		print "Server gave wrong response to ENDHEARTBEAT: $response\n";
382	+	&tcp_configure();
383		return;
384		}
385
386		close($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 $pidfile.
398	+	# This is then used by a seperate script to check (and restart) ihost.
399	+	#-----------------------------------------------------------------------
400	+	sub write_pid() {
401	+	open PID, ">$pidfile";
402	+	print 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	+	if((defined $nextline) && ($nextline =~ /^$curlevel$curtag/)) {
433	+	$curline = "";
434	+	}
435	+	else {
436	+	$curtag =~ s/(.*)\./$1/;
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	+	}
455		}

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