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Comparing projects/cms/source/host/ihost-perl/ihost.pl (file contents):
Revision 1.10 by tdb, Thu Feb 1 03:17:32 2001 UTC vs.
Revision 1.48 by tdb, Sat May 11 17:20:07 2002 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	+	$key
38	+	@data
39		);
40
41		if (@ARGV != 2) {
#	Line 41 | Line 46 | $filter_manager_addr = $ARGV[0];
46		$filter_manager_port = $ARGV[1];
47
48		$seq_no = 1;
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 $ostype;
55	+
56	+	# write our PID to a file
57	+	# use home dir by default
58	+	#$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 66 | 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...
93	+	`rm -f $pidfile`;
94		exit(0);
95
96	+
97	+	#-----------------------------------------------------------------------
98	+	# wait_then_retry
99	+	# Waits for the period of time specified in $retry_wait, then attempts
100	+	# to reconfigure with the server.
101	+	#-----------------------------------------------------------------------
102	+	sub wait_then_retry() {
103	+	print "Will retry configuration with filter manager in $retry_wait seconds.\n";
104	+	sleep $retry_wait;
105	+	}
106	+
107	+
108	+	#-----------------------------------------------------------------------
109	+	# tcp_configure
110	+	# Establishes a TCP connection to the specified i-scream filter manager.
111	+	# The host then requests details from the server, such as the intervals
112	+	# at which to send UDP packets.
113	+	#-----------------------------------------------------------------------
114		sub tcp_configure() {
115
116	<	my($sock) = new IO::Socket::INET(
117	<	PeerAddr => $filter_manager_addr,
118	<	PeerPort => $filter_manager_port,
119	<	Proto => 'tcp'
120	<	) or die "Could not perform configuration via TCP: $!\n";
116	>	while (1) {
117	>	my($sock) = new IO::Socket::INET(
118	>	PeerAddr => $filter_manager_addr,
119	>	PeerPort => $filter_manager_port,
120	>	Proto => 'tcp'
121	>	) or die "Cannot connect!";
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";
125	>	wait_then_retry();
126	>	next;
127	>	}
128
129	<	die "Could not connect to the i-scream filter manager: $!\n" unless $sock;
130	<
84	<	# Now run through the configuration process.
85	<	my($response);
129	>	# Now run through the configuration process...
130	>	my($response);
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.";
136	<	exit(1);
137	<	}
132	>	print $sock "STARTCONFIG\n";
133	>	$response = <$sock>;
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;
139	>	}
140
141	<	print "Config started okay.\n";
141	>	print "Config started okay.\n";
142
143	<	print $sock "LASTMODIFIED\n";
144	<	$response = <$sock>;
145	<	chop $response;
146	<	$last_modified = $response;
143	>	print $sock "LASTMODIFIED\n";
144	>	$response = <$sock>;
145	>	if (!$response || $response eq "ERROR\n") {
146	>	print "The i-scream server did not provide the LASTMODIFIED value.\n";
147	>	close($sock);
148	>	wait_then_retry();
149	>	next;
150	>	}
151	>	chomp $response;
152	>	$last_modified = $response;
153
154	<	print "Config last modified: ". (scalar localtime $last_modified/1000) . "\n";
154	>	print "Config last modified: ". (scalar localtime $last_modified/1000) . "\n";
155
156	<	print $sock "FILELIST\n";
157	<	$response = <$sock>;
158	<	chop $response;
159	<	$file_list = $response;
156	>	print $sock "FILELIST\n";
157	>	$response = <$sock>;
158	>	if (!$response || $response eq "ERROR\n") {
159	>	print "The i-scream server did not provide a configuration file list.\n";
160	>	close($sock);
161	>	wait_then_retry();
162	>	next;
163	>	}
164	>	chomp $response;
165	>	$file_list = $response;
166
167	<	print "File list obtained: $file_list\n";
167	>	print "File list obtained: $file_list\n";
168
169	<	print $sock "UDPUpdateTime\n";
170	<	$response = <$sock>;
171	<	chop $response;
172	<	$udp_update_time = $response;
169	>	print $sock "FQDN\n";
170	>	$response = <$sock>;
171	>	if (!$response || $response eq "ERROR\n") {
172	>	print "The i-scream server did not tell us our FQDN.\n";
173	>	close($sock);
174	>	wait_then_retry();
175	>	next;
176	>	}
177	>	chomp $response;
178	>	$fqdn = $response;
179
180	<	print $sock "TCPUpdateTime\n";
181	<	$response = <$sock>;
182	<	chop $response;
183	<	$tcp_update_time = $response;
180	>	print "FQDN returned: $fqdn\n";
181	>
182	>	print $sock "UDPUpdateTime\n";
183	>	$response = <$sock>;
184	>	if (!$response || $response eq "ERROR\n") {
185	>	print "The i-scream server did not give us a UDPUpdateTime.\n";
186	>	close($sock);
187	>	wait_then_retry();
188	>	next;
189	>	}
190	>	chomp $response;
191	>	$udp_update_time = $response;
192	>
193	>	print $sock "TCPUpdateTime\n";
194	>	$response = <$sock>;
195	>	if (!$response || $response eq "ERROR\n") {
196	>	print "The i-scream server did not give us a TCPUpdateTime.\n";
197	>	close($sock);
198	>	wait_then_retry();
199	>	next;
200	>	}
201	>	chomp $response;
202	>	$tcp_update_time = $response;
203
204	<	print "UDP packet period: $udp_update_time seconds.\nTCP heartbeat period: $tcp_update_time seconds.\n";
204	>	print "UDP packet period: $udp_update_time seconds.\nTCP heartbeat period: $tcp_update_time seconds.\n";
205
206	<	print $sock "ENDCONFIG\n";
207	<	$response = <$sock>;
208	<	chomp $response;
209	<	if (!$response eq "OK") {
210	<	print "ENDCONFIG command to server failed.  Terminated.\n";
211	<	exit(1);
212	<	}
206	>	print $sock "ENDCONFIG\n";
207	>	$response = <$sock>;
208	>	if ($response && !($response eq "OK\n")) {
209	>	print "ENDCONFIG command to server failed.  Terminated.\n";
210	>	close($sock);
211	>	wait_then_retry();
212	>	next;
213	>	}
214
215	<	print "Config ended.\n";
215	>	print "Config ended.\n";
216
217	<	print $sock "FILTER\n";
218	<	$response = <$sock>;
219	<	chop $response;
220	<	$response =~ /(.*);(.*);(.*)/;
221	<	($filter_addr, $udp_port, $tcp_port) = ($1, $2, $3);
217	>	print $sock "FILTER\n";
218	>	$response = <$sock>;
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	>	chomp $response;
226	>	if ($response eq "ERROR") {
227	>	print "There are no active configured filters for your host.\n";
228	>	close($sock);
229	>	wait_then_retry();
230	>	next;
231	>	}
232	>	$response =~ /^(.*);(.*);(.*)/;
233	>	($filter_addr, $udp_port, $tcp_port) = ($1, $2, $3);
234	>	unless (defined($filter_addr) && defined($udp_port) && defined($tcp_port)) {
235	>	print "Failed: Filter address response from server did not make sense: $response\n";
236	>	close($sock);
237	>	wait_then_retry();
238	>	next;
239	>	}
240
241	<	print "Got filter data ($filter_addr, $udp_port, $tcp_port)\n";
241	>	print "Got filter data ($filter_addr, $udp_port, $tcp_port)\n";
242
243	<	print $sock "END\n";
244	<	$response = <$sock>;
245	<	chop $response;
246	<	if ($response eq "OK") {
247	<	print "Host successfully configured via TCP.\n"
248	<	}
249	<	else {
250	<	print "The server failed the host configuration on the END command.";
251	<	exit(1);
252	<	}
243	>	print $sock "END\n";
244	>	$response = <$sock>;
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.\n";
250	>	close($sock);
251	>	wait_then_retry();
252	>	next;
253	>	}
254
255	<	close($sock);
255	>	close($sock);
256
257	<	print "Configuration finished sucessfully!\n";
257	>	print "Configuration finished sucessfully!\n";
258	>	last;
259	>	}
260	>	return;
261		}
262
263	+
264	+	#-----------------------------------------------------------------------
265	+	# send_udp_packet
266	+	# Sends a UDP packet to an i-scream filter.
267	+	# The packet contains XML markup describing some of the machine's state.
268	+	# Receipt of UDP packets is not guaranteed.
269	+	#-----------------------------------------------------------------------
270		sub send_udp_packet() {
271
272	<	my(@statgrab) = `./statgrab.pl`;
273	<	my(%packet);
274	<	for (my($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	<	$disk_info .= qq/<name>$packet{"packet.disk.p$i.attributes.name"}<\/name>/;
290	<	$disk_info .= qq/<kbytes>$packet{"packet.disk.p$i.attributes.kbytes"}<\/kbytes>/;
291	<	$disk_info .= qq/<used>$packet{"packet.disk.p$i.attributes.used"}<\/used>/;
174	<	$disk_info .= qq/<avail>$packet{"packet.disk.p$i.attributes.avail"}<\/avail>/;
175	<	$disk_info .= qq/<mount>$packet{"packet.disk.p$i.attributes.mount"}<\/mount>/;
176	<	$disk_info .= "</p$i>";
177	<	++$i;
178	<	}
179	<	$disk_info .= "</disk>";
180	<
181	<	my($hostname) = hostname();
182	<	$hostname =~ s/\..*$//g;
183	<	`cat /etc/resolv.conf` =~ /domain\s+([^\s]+)/;
184	<	my($domainname) = $1;
185	<	my($machine_name) = "$hostname.$domainname";
186	<	my($ip) = inet_ntoa(scalar(gethostbyname($hostname)) || 'localhost');
187	<
188	<	# Build the XML packet this way, as we can clearly
189	<	# see the structure and contents... I like this ;-)
190	<	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="$machine_name" date="$date" type="data" ip="$ip">
294	<	<load>
194	<	<load1>$packet{"packet.load.load1"}</load1>
195	<	<load5>$packet{"packet.load.load5"}</load5>
196	<	<load15>$packet{"packet.load.load15"}</load15>
197	<	</load>
198	<	<os>
199	<	<name>$packet{"packet.os.name"}</name>
200	<	<release>$packet{"packet.os.release"}</release>
201	<	<platform>$packet{"packet.os.platform"}</platform>
202	<	<sysname>$packet{"packet.os.sysname"}</sysname>
203	<	<version>$packet{"packet.os.version"}</version>
204	<	<uptime>$packet{"packet.os.uptime"}</uptime>
205	<	</os>
206	<	<users>
207	<	<count>$packet{"packet.users.count"}</count>
208	<	<list>$packet{"packet.users.list"}</list>
209	<	</users>
210	<	<processes>
211	<	<total>$packet{"packet.processes.total"}</total>
212	<	<sleeping>$packet{"packet.processes.sleeping"}</sleeping>
213	<	<zombie>$packet{"packet.processes.zombie"}</zombie>
214	<	<stopped>$packet{"packet.processes.stopped"}</stopped>
215	<	<cpu>$packet{"packet.processes.cpu"}</cpu>
216	<	</processes>
217	<	<cpu>
218	<	<idle>$packet{"packet.cpu.idle"}</idle>
219	<	<user>$packet{"packet.cpu.user"}</user>
220	<	<kernel>$packet{"packet.cpu.kernel"}</kernel>
221	<	<iowait>$packet{"packet.cpu.iowait"}</iowait>
222	<	<swap>$packet{"packet.cpu.swap"}</swap>
223	<	</cpu>
224	<	<memory>
225	<	<total>$packet{"packet.memory.real"}</total>
226	<	<free>$packet{"packet.memory.free"}</free>
227	<	</memory>
228	<	<swap>
229	<	<total>$packet{"packet.memory.swap_total"}</total>
230	<	<free>$packet{"packet.memory.swap_free"}</free>
231	<	</swap>
232	<	$disk_info
233	<	</packet>
293	>	# sort the data
294	>	@data = sort(grep(!/^$/, grep(/^packet\./, @data)));
295
296	<	EOF
296	>	# turn the array into some nice XML
297	>	my($xml) = &make_xml("", "");
298
237	–	$xml =~ s/\n\s*//g;
238	–
299		my($sock) = new IO::Socket::INET (
300		PeerPort => $udp_port,
301		PeerAddr => $filter_addr,
302		Proto => 'udp'
303	<	) or die "Socket: $!\n";
304	<
303	>	) or die "Could not send UDP: $!\n";
304	>
305		print $sock $xml or die "Could not send UDP packet: $!\n";
306		close($sock);
307		$seq_no++;
308		print "-";
309	+
310	+	return;
311		}
312
313	+
314	+	#-----------------------------------------------------------------------
315	+	# send_tcp_heartbeat
316	+	# Establishes a TCP connection to an i-scream filter.
317	+	# The heartbeat is used as a guaranteed "I'm alive" delivery mechanism.
318	+	# If we need to reconfigure, then we complete the heartbeat before
319	+	# doing so.
320	+	#-----------------------------------------------------------------------
321		sub send_tcp_heartbeat() {
322
323	+	my ($doReconfigure) = 0;
324	+
325		my($sock) = new IO::Socket::INET(
326		PeerAddr => $filter_addr,
327		PeerPort => $tcp_port,
328		Proto => 'tcp'
329	<	) or die "Could not perform heartbeat via TCP: $!\n";
329	>	) or return;
330	>	if (!defined $sock) {
331	>	print "IHOST WARNING: Failed to deliver a heartbeat to the i-scream filter.\n";
332	>	&tcp_configure();
333	>	return;
334	>	}
335
259	–	die "Could not connect to the i-scream filter: $!\n" unless $sock;
260	–
336		# Now run through the configuration process.
337		my($response);
338
339		print $sock "HEARTBEAT\n";
340		$response = <$sock>;
341	<	chop $response;
267	<	if (!$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();
345		return;
346		}
347
348		print $sock "CONFIG\n";
349		$response = <$sock>;
350	<	chop $response;
276	<	if (!$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();
354		return;
355		}
356
357		print $sock "$file_list\n";
358		$response = <$sock>;
359	<	chop $response;
285	<	if (!$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();
363		return;
364		}
365
366		print $sock "$last_modified\n";
367		$response = <$sock>;
368	<	chop $response;
294	<	if ($response eq "ERROR") {
368	>	if ($response eq "ERROR\n") {
369		close($sock);
370	<	&tcp_configure();
371	<	return;
370	>	print "Server configuration changed.  Reconfiguring with filter manager.\n";
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	<	chop $response;
308	<	if (!$response eq "OK") {
385	>	if (!$response eq "OK\n") {
386		close($sock);
387		print "Server gave wrong response to ENDHEARTBEAT: $response\n";
388	+	&tcp_configure();
389		return;
390		}
391
392		close($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 $pidfile.
404	+	# This is then used by a seperate script to check (and restart) ihost.
405	+	#-----------------------------------------------------------------------
406	+	sub write_pid() {
407	+	open PID, ">$pidfile";
408	+	print 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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