host/ihost-perl/ihost.pl

#!/usr/local/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:  $
# $Id:  $
#------------------------------------------------------------

$| = 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 . "\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.\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/^([^\.]*?)/$1/;
    my($domainname) = `cat /etc/resolv.conf`;
    $domainname =~ s/domain\s*([^\s]*?)/$1/;
    my($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:	1.1
Committed:	Fri Jan 26 17:09:29 2001 UTC (23 years, 10 months ago) by pjm2
Content type:	text/plain
Branch:	MAIN
Log Message:	The first working version of the solely perl-based host. Oh my word this is spangly.
#	User	Rev	Content
1	pjm2	1.1	#!/usr/local/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: $
12			# $Id: $
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 . "\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.\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/^([^\.]*?)/$1/;
173			my($domainname) = `cat /etc/resolv.conf`;
174			$domainname =~ s/domain\s([^\s]?)/$1/;
175			my($machine_name) = "$hostname.$domainname";
176			my($ip) = inet_ntoa(scalar(gethostbyname($hostname)) \|\| 'localhost');
177
178			# Build the XML packet this way, as we can clearly
179			# see the structure and contents... I like this ;-)
180			my($xml) = <<EOF;
181
182			<packet seq_no="$seq_no" machine_name="$machine_name" date="$date" type="data" ip="$ip">
183			<load>
184			<load1>$packet{"packet.load.load1"}</load1>
185			<load5>$packet{"packet.load.load5"}</load5>
186			<load15>$packet{"packet.load.load15"}</load15>
187			</load>
188			<os>
189			<name>$packet{"packet.os.name"}</name>
190			<release>$packet{"packet.os.release"}</release>
191			<platform>$packet{"packet.os.platform"}</platform>
192			<sysname>$packet{"packet.os.sysname"}</sysname>
193			<version>$packet{"packet.os.version"}</version>
194			</os>
195			<users>
196			<count>$packet{"packet.users.count"}</count>
197			<list>$packet{"packet.users.list"}</list>
198			</users>
199			<processes>
200			<total>$packet{"packet.processes.total"}</total>
201			<sleeping>$packet{"packet.processes.sleeping"}</sleeping>
202			<zombie>$packet{"packet.processes.zombie"}</zombie>
203			<stopped>$packet{"packet.processes.stopped"}</stopped>
204			<cpu>$packet{"packet.processes.cpu"}</cpu>
205			</processes>
206			<cpu>
207			<idle>$packet{"packet.cpu.idle"}</idle>
208			<user>$packet{"packet.cpu.user"}</user>
209			<kernel>$packet{"packet.cpu.kernel"}</kernel>
210			<iowait>$packet{"packet.cpu.iowait"}</iowait>
211			<swap>$packet{"packet.cpu.swap"}</swap>
212			</cpu>
213			<memory>
214			<total>$packet{"packet.memory.real"}</total>
215			<free>$packet{"packet.memory.free"}</free>
216			</memory>
217			<swap>
218			<total>$packet{"packet.memory.swap_total"}</total>
219			<free>$packet{"packet.memory.swap_free"}</free>
220			</swap>
221			$disk_info
222			</packet>
223
224			EOF
225
226			$xml =~ s/\n\s*//g;
227
228			my($sock) = new IO::Socket::INET (
229			PeerPort => $udp_port,
230			PeerAddr => $filter_addr,
231			Proto => 'udp'
232			) or die "Socket: $!\n";
233
234			print $sock $xml or die "Could not send UDP packet: $!\n";
235			close($sock);
236			$seq_no++;
237			print "-";
238			}
239
240			sub send_tcp_heartbeat() {
241
242			my($sock) = new IO::Socket::INET(
243			PeerAddr => $filter_addr,
244			PeerPort => $tcp_port,
245			Proto => 'tcp'
246			) or die "Could not perform heartbeat via TCP: $!\n";
247
248			die "Could not connect to the i-scream filter: $!\n" unless $sock;
249
250			# Now run through the configuration process.
251			my($response);
252
253			print $sock "HEARTBEAT\n";
254			$response = <$sock>;
255			chop $response;
256			if (!$response eq "OK") {
257			close($sock);
258			print "Server gave wrong response to HEARTBEAT: $response\n";
259			return;
260			}
261
262			print $sock "CONFIG\n";
263			$response = <$sock>;
264			chop $response;
265			if (!$response eq "OK") {
266			close($sock);
267			print "Server gave wrong response to CONFIG: $response\n";
268			return;
269			}
270
271			print $sock "$file_list\n";
272			$response = <$sock>;
273			chop $response;
274			if (!$response eq "OK") {
275			close($sock);
276			print "Server gave wrong response to file list: $response\n";
277			return;
278			}
279
280			print $sock "$last_modified\n";
281			$response = <$sock>;
282			chop $response;
283			if ($response eq "ERROR") {
284			close($sock);
285			&tcp_configure();
286			return;
287			}
288			if (!$response eq "OK") {
289			close($sock);
290			print "Server gave wrong response to HEARTBEAT: $response\n";
291			return;
292			}
293
294			print $sock "ENDHEARTBEAT\n";
295			$response = <$sock>;
296			chop $response;
297			if (!$response eq "OK") {
298			close($sock);
299			print "Server gave wrong response to ENDHEARTBEAT: $response\n";
300			return;
301			}
302
303			close($sock);
304			print "^";
305			}