host/ihost-perl/ihost.pl

#!/usr/bin/perl -w

# -----------------------------------------------------------
# Perl i-scream Host.
#
# An all-in-one script to act as an i-scream host on
# a typical Unix/Linux box.  You may adapt the data-gathering
# methods as you see fit.
#  - pjm2@ukc.ac.uk
#
# $Author: pjm2 $
# $Id: ihost.pl,v 1.6 2001/01/26 17:47:18 pjm2 Exp $
#------------------------------------------------------------

$| = 1;

use strict;
use IO::Socket;
use Sys::Hostname;

use vars qw (
             $filter_manager_addr
             $filter_manager_port
             $seq_no
             $udp_update_time
             $tcp_update_time
             $last_udp_time
             $last_tcp_time
             $last_modified
             $udp_port
             $tcp_port
             $filter_addr
             $file_list
            );

if (@ARGV != 2) {
    die "Usage: ihost.pl [i-scream filter manager] [TCP port]\n";
}

$filter_manager_addr = $ARGV[0];
$filter_manager_port = $ARGV[1];

$seq_no = 1;

&tcp_configure();
&send_udp_packet();

$last_udp_time = time;
$last_tcp_time = time;
while (1) {
    if (time >= $last_udp_time + $udp_update_time) {
        &send_udp_packet();
        $last_udp_time = time;
    }
    if (time >= $last_tcp_time + $tcp_update_time) {
        &send_tcp_heartbeat();
        $last_tcp_time = time;
    }
    `sleep 1`;
}

exit(0);

sub tcp_configure() {
    
    my($sock) = new IO::Socket::INET(
                                     PeerAddr => $filter_manager_addr,
                                     PeerPort => $filter_manager_port,
                                     Proto => 'tcp'
                                    ) or die "Could not perform configuration via TCP: $!\n";

    die "Could not connect to the i-scream filter manager: $!\n" unless $sock;

    # Now run through the configuration process.
    my($response);
    
    print $sock "STARTCONFIG\n";
    $response = <$sock>;
    if (!chop $response eq "OK") {
        print "The i-scream server rejected the STARTCONFIG command.  Terminated.";
        exit(1);
    }

    print "Config started okay.\n";
    
    print $sock "LASTMODIFIED\n";
    $response = <$sock>;
    chop $response;
    $last_modified = $response;
    
    print "Config last modified: ". (scalar localtime $last_modified/1000) . "\n";

    print $sock "FILELIST\n";
    $response = <$sock>;
    chop $response;
    $file_list = $response;

    print "File list obtained: $file_list\n";

    print $sock "UDPUpdateTime\n";
    $response = <$sock>;
    chop $response;
    $udp_update_time = $response;

    print $sock "TCPUpdateTime\n";
    $response = <$sock>;
    chop $response;
    $tcp_update_time = $response;
    
    print "UDP packet period: $udp_update_time seconds.\nTCP heartbeat period: $tcp_update_time seconds.\n";

    print $sock "ENDCONFIG\n";
    $response = <$sock>;
    chomp $response;
    if (!$response eq "OK") {
        print "ENDCONFIG command to server failed.  Terminated.\n";
        exit(1);
    }

    print "Config ended.\n";
    
    print $sock "FILTER\n";
    $response = <$sock>;
    chop $response;
    $response =~ /(.*);(.*);(.*)/;
    ($filter_addr, $udp_port, $tcp_port) = ($1, $2, $3);
    
    print "Got filter data ($filter_addr, $udp_port, $tcp_port)\n";

    print $sock "END\n";
    $response = <$sock>;
    chop $response;
    if ($response eq "OK") {
        print "Host successfully configured via TCP.\n"
    }
    else {
        print "The server failed the host configuration on the END command.";
        exit(1);
    }
    
    close($sock);

    print "Configuration finished sucessfully!\n";
}

sub send_udp_packet() {

    my(@statgrab) = `./statgrab.pl`;
    my(%packet);
    for (my($i) = 0; $i < $#statgrab; $i++) {
        $statgrab[$i] =~ /^([^\s]*) (.*)$/;
        $packet{$1} = $2;
    }
    
    my($date) = time;
    
    my($disk_info) = "<disk>";
    my($i) = 0;
    while (defined $packet{"packet.disk.p$i.attributes.mount"}) {
        $disk_info .= "<p$i>";
        $disk_info .= qq/<name>$packet{"packet.disk.p$i.attributes.name"}<\/name>/;
        $disk_info .= qq/<kbytes>$packet{"packet.disk.p$i.attributes.kbytes"}<\/kbytes>/;
        $disk_info .= qq/<used>$packet{"packet.disk.p$i.attributes.used"}<\/used>/;
        $disk_info .= qq/<avail>$packet{"packet.disk.p$i.attributes.avail"}<\/avail>/;
        $disk_info .= qq/<mount>$packet{"packet.disk.p$i.attributes.mount"}<\/mount>/;
        $disk_info .= "</p$i>";
        ++$i;
    }
    $disk_info .= "</disk>";

    my($hostname) = hostname();
    $hostname =~ s/\..*$//g;
    my($domainname) = `cat /etc/resolv.conf`;
    $domainname =~ /domain\s+([^\s]+)/;
    $domainname = $1;
    my($machine_name) = "$hostname.$domainname";
    my($ip) = inet_ntoa(scalar(gethostbyname($hostname)) || 'localhost');

    # Build the XML packet this way, as we can clearly
    # see the structure and contents... I like this ;-)
    my($xml) = <<EOF;
    
<packet seq_no="$seq_no" machine_name="$machine_name" date="$date" type="data" ip="$ip">
    <load>
        <load1>$packet{"packet.load.load1"}</load1>
        <load5>$packet{"packet.load.load5"}</load5>
        <load15>$packet{"packet.load.load15"}</load15>
    </load>
    <os>
        <name>$packet{"packet.os.name"}</name>
        <release>$packet{"packet.os.release"}</release>
        <platform>$packet{"packet.os.platform"}</platform>
        <sysname>$packet{"packet.os.sysname"}</sysname>
        <version>$packet{"packet.os.version"}</version>
    </os>
    <users>
        <count>$packet{"packet.users.count"}</count>
        <list>$packet{"packet.users.list"}</list>
    </users>
    <processes>
        <total>$packet{"packet.processes.total"}</total>
        <sleeping>$packet{"packet.processes.sleeping"}</sleeping>
        <zombie>$packet{"packet.processes.zombie"}</zombie>
        <stopped>$packet{"packet.processes.stopped"}</stopped>
        <cpu>$packet{"packet.processes.cpu"}</cpu>
    </processes>
    <cpu>
        <idle>$packet{"packet.cpu.idle"}</idle>
        <user>$packet{"packet.cpu.user"}</user>
        <kernel>$packet{"packet.cpu.kernel"}</kernel>
        <iowait>$packet{"packet.cpu.iowait"}</iowait>
        <swap>$packet{"packet.cpu.swap"}</swap>
    </cpu>
    <memory>
        <total>$packet{"packet.memory.real"}</total>
        <free>$packet{"packet.memory.free"}</free>
    </memory>
    <swap>
        <total>$packet{"packet.memory.swap_total"}</total>
        <free>$packet{"packet.memory.swap_free"}</free>
    </swap>
    $disk_info
</packet>

EOF

    $xml =~ s/\n\s*//g;
    
    my($sock) = new IO::Socket::INET (
                                      PeerPort => $udp_port,
                                      PeerAddr => $filter_addr,
                                      Proto => 'udp'
                                     ) or die "Socket: $!\n";

    print $sock $xml or die "Could not send UDP packet: $!\n";
    close($sock);
    $seq_no++;
    print "-";
}

sub send_tcp_heartbeat() {

    my($sock) = new IO::Socket::INET(
                                     PeerAddr => $filter_addr,
                                     PeerPort => $tcp_port,
                                     Proto => 'tcp'
                                    ) or die "Could not perform heartbeat via TCP: $!\n";

    die "Could not connect to the i-scream filter: $!\n" unless $sock;

    # Now run through the configuration process.
    my($response);

    print $sock "HEARTBEAT\n";
    $response = <$sock>;
    chop $response;
    if (!$response eq "OK") {
        close($sock);
        print "Server gave wrong response to HEARTBEAT: $response\n";
        return;
    }
    
    print $sock "CONFIG\n";
    $response = <$sock>;
    chop $response;
    if (!$response eq "OK") {
        close($sock);
        print "Server gave wrong response to CONFIG: $response\n";
        return;
    }

    print $sock "$file_list\n";
    $response = <$sock>;
    chop $response;
    if (!$response eq "OK") {
        close($sock);
        print "Server gave wrong response to file list: $response\n";
        return;
    }
    
    print $sock "$last_modified\n";
    $response = <$sock>;
    chop $response;
    if ($response eq "ERROR") {
        close($sock);
        &tcp_configure();
        return;
    }
    if (!$response eq "OK") {
        close($sock);
        print "Server gave wrong response to HEARTBEAT: $response\n";
        return;
    }
    
    print $sock "ENDHEARTBEAT\n";
    $response = <$sock>;
    chop $response;
    if (!$response eq "OK") {
        close($sock);
        print "Server gave wrong response to ENDHEARTBEAT: $response\n";
        return;
    }
    
    close($sock);
    print "^";
}
Revision:	1.7
Committed:	Mon Jan 29 09:04:18 2001 UTC (23 years, 10 months ago) by pjm2
Content type:	text/plain
Branch:	MAIN
Changes since 1.6:	+5 -4 lines
Log Message:	Fixed a few minor print statements. Time is now expressed in milliseconds. The regexp for returning the machine name has been altered.
#	Content
1	#!/usr/bin/perl -w
2
3	# -----------------------------------------------------------
4	# Perl i-scream Host.
5	#
6	# An all-in-one script to act as an i-scream host on
7	# a typical Unix/Linux box. You may adapt the data-gathering
8	# methods as you see fit.
9	# - pjm2@ukc.ac.uk
10	#
11	# $Author: pjm2 $
12	# $Id: ihost.pl,v 1.6 2001/01/26 17:47:18 pjm2 Exp $
13	#------------------------------------------------------------
14
15	$\| = 1;
16
17	use strict;
18	use IO::Socket;
19	use Sys::Hostname;
20
21	use vars qw (
22	$filter_manager_addr
23	$filter_manager_port
24	$seq_no
25	$udp_update_time
26	$tcp_update_time
27	$last_udp_time
28	$last_tcp_time
29	$last_modified
30	$udp_port
31	$tcp_port
32	$filter_addr
33	$file_list
34	);
35
36	if (@ARGV != 2) {
37	die "Usage: ihost.pl [i-scream filter manager] [TCP port]\n";
38	}
39
40	$filter_manager_addr = $ARGV[0];
41	$filter_manager_port = $ARGV[1];
42
43	$seq_no = 1;
44
45	&tcp_configure();
46	&send_udp_packet();
47
48	$last_udp_time = time;
49	$last_tcp_time = time;
50	while (1) {
51	if (time >= $last_udp_time + $udp_update_time) {
52	&send_udp_packet();
53	$last_udp_time = time;
54	}
55	if (time >= $last_tcp_time + $tcp_update_time) {
56	&send_tcp_heartbeat();
57	$last_tcp_time = time;
58	}
59	`sleep 1`;
60	}
61
62	exit(0);
63
64	sub tcp_configure() {
65
66	my($sock) = new IO::Socket::INET(
67	PeerAddr => $filter_manager_addr,
68	PeerPort => $filter_manager_port,
69	Proto => 'tcp'
70	) or die "Could not perform configuration via TCP: $!\n";
71
72	die "Could not connect to the i-scream filter manager: $!\n" unless $sock;
73
74	# Now run through the configuration process.
75	my($response);
76
77	print $sock "STARTCONFIG\n";
78	$response = <$sock>;
79	if (!chop $response eq "OK") {
80	print "The i-scream server rejected the STARTCONFIG command. Terminated.";
81	exit(1);
82	}
83
84	print "Config started okay.\n";
85
86	print $sock "LASTMODIFIED\n";
87	$response = <$sock>;
88	chop $response;
89	$last_modified = $response;
90
91	print "Config last modified: ". (scalar localtime $last_modified/1000) . "\n";
92
93	print $sock "FILELIST\n";
94	$response = <$sock>;
95	chop $response;
96	$file_list = $response;
97
98	print "File list obtained: $file_list\n";
99
100	print $sock "UDPUpdateTime\n";
101	$response = <$sock>;
102	chop $response;
103	$udp_update_time = $response;
104
105	print $sock "TCPUpdateTime\n";
106	$response = <$sock>;
107	chop $response;
108	$tcp_update_time = $response;
109
110	print "UDP packet period: $udp_update_time seconds.\nTCP heartbeat period: $tcp_update_time seconds.\n";
111
112	print $sock "ENDCONFIG\n";
113	$response = <$sock>;
114	chomp $response;
115	if (!$response eq "OK") {
116	print "ENDCONFIG command to server failed. Terminated.\n";
117	exit(1);
118	}
119
120	print "Config ended.\n";
121
122	print $sock "FILTER\n";
123	$response = <$sock>;
124	chop $response;
125	$response =~ /(.);(.);(.*)/;
126	($filter_addr, $udp_port, $tcp_port) = ($1, $2, $3);
127
128	print "Got filter data ($filter_addr, $udp_port, $tcp_port)\n";
129
130	print $sock "END\n";
131	$response = <$sock>;
132	chop $response;
133	if ($response eq "OK") {
134	print "Host successfully configured via TCP.\n"
135	}
136	else {
137	print "The server failed the host configuration on the END command.";
138	exit(1);
139	}
140
141	close($sock);
142
143	print "Configuration finished sucessfully!\n";
144	}
145
146	sub send_udp_packet() {
147
148	my(@statgrab) = `./statgrab.pl`;
149	my(%packet);
150	for (my($i) = 0; $i < $#statgrab; $i++) {
151	$statgrab[$i] =~ /^([^\s]) (.)$/;
152	$packet{$1} = $2;
153	}
154
155	my($date) = time;
156
157	my($disk_info) = "<disk>";
158	my($i) = 0;
159	while (defined $packet{"packet.disk.p$i.attributes.mount"}) {
160	$disk_info .= "<p$i>";
161	$disk_info .= qq/<name>$packet{"packet.disk.p$i.attributes.name"}<\/name>/;
162	$disk_info .= qq/<kbytes>$packet{"packet.disk.p$i.attributes.kbytes"}<\/kbytes>/;
163	$disk_info .= qq/<used>$packet{"packet.disk.p$i.attributes.used"}<\/used>/;
164	$disk_info .= qq/<avail>$packet{"packet.disk.p$i.attributes.avail"}<\/avail>/;
165	$disk_info .= qq/<mount>$packet{"packet.disk.p$i.attributes.mount"}<\/mount>/;
166	$disk_info .= "</p$i>";
167	++$i;
168	}
169	$disk_info .= "</disk>";
170
171	my($hostname) = hostname();
172	$hostname =~ s/\..*$//g;
173	my($domainname) = `cat /etc/resolv.conf`;
174	$domainname =~ /domain\s+([^\s]+)/;
175	$domainname = $1;
176	my($machine_name) = "$hostname.$domainname";
177	my($ip) = inet_ntoa(scalar(gethostbyname($hostname)) \|\| 'localhost');
178
179	# Build the XML packet this way, as we can clearly
180	# see the structure and contents... I like this ;-)
181	my($xml) = <<EOF;
182
183	<packet seq_no="$seq_no" machine_name="$machine_name" date="$date" type="data" ip="$ip">
184	<load>
185	<load1>$packet{"packet.load.load1"}</load1>
186	<load5>$packet{"packet.load.load5"}</load5>
187	<load15>$packet{"packet.load.load15"}</load15>
188	</load>
189	<os>
190	<name>$packet{"packet.os.name"}</name>
191	<release>$packet{"packet.os.release"}</release>
192	<platform>$packet{"packet.os.platform"}</platform>
193	<sysname>$packet{"packet.os.sysname"}</sysname>
194	<version>$packet{"packet.os.version"}</version>
195	</os>
196	<users>
197	<count>$packet{"packet.users.count"}</count>
198	<list>$packet{"packet.users.list"}</list>
199	</users>
200	<processes>
201	<total>$packet{"packet.processes.total"}</total>
202	<sleeping>$packet{"packet.processes.sleeping"}</sleeping>
203	<zombie>$packet{"packet.processes.zombie"}</zombie>
204	<stopped>$packet{"packet.processes.stopped"}</stopped>
205	<cpu>$packet{"packet.processes.cpu"}</cpu>
206	</processes>
207	<cpu>
208	<idle>$packet{"packet.cpu.idle"}</idle>
209	<user>$packet{"packet.cpu.user"}</user>
210	<kernel>$packet{"packet.cpu.kernel"}</kernel>
211	<iowait>$packet{"packet.cpu.iowait"}</iowait>
212	<swap>$packet{"packet.cpu.swap"}</swap>
213	</cpu>
214	<memory>
215	<total>$packet{"packet.memory.real"}</total>
216	<free>$packet{"packet.memory.free"}</free>
217	</memory>
218	<swap>
219	<total>$packet{"packet.memory.swap_total"}</total>
220	<free>$packet{"packet.memory.swap_free"}</free>
221	</swap>
222	$disk_info
223	</packet>
224
225	EOF
226
227	$xml =~ s/\n\s*//g;
228
229	my($sock) = new IO::Socket::INET (
230	PeerPort => $udp_port,
231	PeerAddr => $filter_addr,
232	Proto => 'udp'
233	) or die "Socket: $!\n";
234
235	print $sock $xml or die "Could not send UDP packet: $!\n";
236	close($sock);
237	$seq_no++;
238	print "-";
239	}
240
241	sub send_tcp_heartbeat() {
242
243	my($sock) = new IO::Socket::INET(
244	PeerAddr => $filter_addr,
245	PeerPort => $tcp_port,
246	Proto => 'tcp'
247	) or die "Could not perform heartbeat via TCP: $!\n";
248
249	die "Could not connect to the i-scream filter: $!\n" unless $sock;
250
251	# Now run through the configuration process.
252	my($response);
253
254	print $sock "HEARTBEAT\n";
255	$response = <$sock>;
256	chop $response;
257	if (!$response eq "OK") {
258	close($sock);
259	print "Server gave wrong response to HEARTBEAT: $response\n";
260	return;
261	}
262
263	print $sock "CONFIG\n";
264	$response = <$sock>;
265	chop $response;
266	if (!$response eq "OK") {
267	close($sock);
268	print "Server gave wrong response to CONFIG: $response\n";
269	return;
270	}
271
272	print $sock "$file_list\n";
273	$response = <$sock>;
274	chop $response;
275	if (!$response eq "OK") {
276	close($sock);
277	print "Server gave wrong response to file list: $response\n";
278	return;
279	}
280
281	print $sock "$last_modified\n";
282	$response = <$sock>;
283	chop $response;
284	if ($response eq "ERROR") {
285	close($sock);
286	&tcp_configure();
287	return;
288	}
289	if (!$response eq "OK") {
290	close($sock);
291	print "Server gave wrong response to HEARTBEAT: $response\n";
292	return;
293	}
294
295	print $sock "ENDHEARTBEAT\n";
296	$response = <$sock>;
297	chop $response;
298	if (!$response eq "OK") {
299	close($sock);
300	print "Server gave wrong response to ENDHEARTBEAT: $response\n";
301	return;
302	}
303
304	close($sock);
305	print "^";
306	}