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Comparing projects/cms/source/host/ihost-perl/ihost.pl (file contents):
Revision 1.30 by pjm2, Thu Mar 15 09:44:08 2001 UTC vs.
Revision 1.45 by tdb, Tue Dec 18 06:07:00 2001 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 +             @data
38              );
39  
40   if (@ARGV != 2) {
# Line 45 | Line 45 | $filter_manager_addr = $ARGV[0];
45   $filter_manager_port = $ARGV[1];
46  
47   $seq_no = 1;
48 < $retry_wait = 600;
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 < $pidfile = "/var/tmp/ihost.pid";
56 > # use home dir by default
57 > #$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();
# Line 75 | 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...
# Line 90 | Line 99 | exit(0);
99   #-----------------------------------------------------------------------
100   sub wait_then_retry() {
101      print "Will retry configuration with filter manager in $retry_wait seconds.\n";
102 <    `sleep $retry_wait`;
102 >    sleep $retry_wait;
103   }
104  
105  
# Line 102 | Line 111 | sub wait_then_retry() {
111   #-----------------------------------------------------------------------
112   sub tcp_configure() {
113      
114 <    while (1 == 1) {
114 >    while (1) {
115          my($sock) = new IO::Socket::INET(
116                                           PeerAddr => $filter_manager_addr,
117                                           PeerPort => $filter_manager_port,
# Line 120 | Line 129 | sub tcp_configure() {
129      
130          print $sock "STARTCONFIG\n";
131          $response = <$sock>;
132 <        if (!chop $response eq "OK") {
133 <            print "The i-scream server rejected the STARTCONFIG command.  Terminated.";
132 >        if ($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;
# Line 131 | Line 140 | sub tcp_configure() {
140      
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      
# Line 138 | Line 153 | sub tcp_configure() {
153  
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  
# Line 145 | Line 166 | sub tcp_configure() {
166  
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  
# Line 152 | Line 179 | sub tcp_configure() {
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      
# Line 164 | Line 203 | sub tcp_configure() {
203  
204          print $sock "ENDCONFIG\n";
205          $response = <$sock>;
206 <        chomp $response;
168 <        if (!$response eq "OK") {
206 >        if ($response && !($response eq "OK\n")) {
207              print "ENDCONFIG command to server failed.  Terminated.\n";
208              close($sock);
209              wait_then_retry();
# Line 176 | Line 214 | sub tcp_configure() {
214      
215          print $sock "FILTER\n";
216          $response = <$sock>;
217 <        unless (defined($response)) {
217 >        if (!$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 =~ /(.*);(.*);(.*)/;
224 >        $response =~ /^(.*);(.*);(.*)/;
225          if ($response eq "ERROR") {
226              print "There are no active configured filters for your host.\n";
227              close($sock);
# Line 202 | Line 240 | sub tcp_configure() {
240  
241          print $sock "END\n";
242          $response = <$sock>;
243 <        chop $response;
206 <        if ($response eq "OK") {
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.";
247 >            print "The server failed the host configuration on the END command.\n";
248              close($sock);
249              wait_then_retry();
250              next;
# Line 222 | Line 259 | sub tcp_configure() {
259   }
260  
261  
225
226
262   #-----------------------------------------------------------------------
263   # send_udp_packet
264   # Sends a UDP packet to an i-scream filter.
# Line 232 | Line 267 | sub tcp_configure() {
267   #-----------------------------------------------------------------------
268   sub send_udp_packet() {
269  
270 <    my(@statgrab) = `./statgrab.pl`;
271 <    my(%packet);
272 <    for (my($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 .= " name=\"" . $packet{"packet.disk.p$i.attributes.name"} . "\"";
288 <        $disk_info .= " kbytes=\"" . $packet{"packet.disk.p$i.attributes.kbytes"} . "\"";
250 <        $disk_info .= " used=\"" . $packet{"packet.disk.p$i.attributes.used"} . "\"";
251 <        $disk_info .= " avail=\"" . $packet{"packet.disk.p$i.attributes.avail"} . "\"";
252 <        $disk_info .= " mount=\"" . $packet{"packet.disk.p$i.attributes.mount"} . "\"";
253 <        $disk_info .= "></p$i>";
254 <        ++$i;
255 <    }
256 <    $disk_info .= "</disk>";
257 <
258 <    my($ip) = inet_ntoa(scalar(gethostbyname(hostname())) || 'localhost');
259 <
260 <    # Build the XML packet this way, as we can clearly
261 <    # see the structure and contents... I like this ;-)
262 <    # [Note that the server rejects UDP packets that are
263 <    # larger than 8196 bytes]
264 <    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="$fqdn" date="$date" type="data" ip="$ip">
291 <    <load>
268 <        <load1>$packet{"packet.load.load1"}</load1>
269 <        <load5>$packet{"packet.load.load5"}</load5>
270 <        <load15>$packet{"packet.load.load15"}</load15>
271 <    </load>
272 <    <os>
273 <        <name>$packet{"packet.os.name"}</name>
274 <        <release>$packet{"packet.os.release"}</release>
275 <        <platform>$packet{"packet.os.platform"}</platform>
276 <        <sysname>$packet{"packet.os.sysname"}</sysname>
277 <        <version>$packet{"packet.os.version"}</version>
278 <        <uptime>$packet{"packet.os.uptime"}</uptime>
279 <    </os>
280 <    <users>
281 <        <count>$packet{"packet.users.count"}</count>
282 <        <list>$packet{"packet.users.list"}</list>
283 <    </users>
284 <    <processes>
285 <        <total>$packet{"packet.processes.total"}</total>
286 <        <sleeping>$packet{"packet.processes.sleeping"}</sleeping>
287 <        <zombie>$packet{"packet.processes.zombie"}</zombie>
288 <        <stopped>$packet{"packet.processes.stopped"}</stopped>
289 <        <cpu>$packet{"packet.processes.cpu"}</cpu>
290 <    </processes>
291 <    <cpu>
292 <        <idle>$packet{"packet.cpu.idle"}</idle>
293 <        <user>$packet{"packet.cpu.user"}</user>
294 <        <kernel>$packet{"packet.cpu.kernel"}</kernel>
295 <        <iowait>$packet{"packet.cpu.iowait"}</iowait>
296 <        <swap>$packet{"packet.cpu.swap"}</swap>
297 <    </cpu>
298 <    <memory>
299 <        <total>$packet{"packet.memory.total"}</total>
300 <        <free>$packet{"packet.memory.free"}</free>
301 <    </memory>
302 <    <swap>
303 <        <total>$packet{"packet.swap.total"}</total>
304 <        <free>$packet{"packet.swap.free"}</free>
305 <    </swap>
306 <    $disk_info
307 < </packet>
290 >    # sort the data
291 >    @data = sort(grep(!/^$/, grep(/^packet\./, @data)));
292  
293 < EOF
293 >    # turn the array into some nice XML
294 >    my($xml) = &make_xml("", "");
295  
311    # Make the packet smaller by stripping out newlines and leading spaces.
312    $xml =~ s/\n\s*//g;
313
296      my($sock) = new IO::Socket::INET (
297                                        PeerPort => $udp_port,
298                                        PeerAddr => $filter_addr,
299                                        Proto => 'udp'
300                                       ) or die "Could not send UDP: $!\n";
301 <
301 >    
302      print $sock $xml or die "Could not send UDP packet: $!\n";
303      close($sock);
304      $seq_no++;
# Line 326 | Line 308 | EOF
308   }
309  
310  
329
330
311   #-----------------------------------------------------------------------
312   # send_tcp_heartbeat
313   # Establishes a TCP connection to an i-scream filter.
314   # The heartbeat is used as a guaranteed "I'm alive" delivery mechanism.
315 + # If we need to reconfigure, then we complete the heartbeat before
316 + # doing so.
317   #-----------------------------------------------------------------------
318   sub send_tcp_heartbeat() {
319  
320 +    my ($doReconfigure) = 0;
321 +
322      my($sock) = new IO::Socket::INET(
323                                       PeerAddr => $filter_addr,
324                                       PeerPort => $tcp_port,
# Line 351 | Line 335 | sub send_tcp_heartbeat() {
335  
336      print $sock "HEARTBEAT\n";
337      $response = <$sock>;
338 <    return if (!defined $response);
355 <    chop $response;
356 <    if (!$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();
# Line 362 | Line 344 | sub send_tcp_heartbeat() {
344      
345      print $sock "CONFIG\n";
346      $response = <$sock>;
347 <    return if (!defined $response);
366 <    chop $response;
367 <    if (!$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();
# Line 373 | Line 353 | sub send_tcp_heartbeat() {
353  
354      print $sock "$file_list\n";
355      $response = <$sock>;
356 <    return if (!defined $response);
377 <    chop $response;
378 <    if (!$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();
# Line 384 | Line 362 | sub send_tcp_heartbeat() {
362      
363      print $sock "$last_modified\n";
364      $response = <$sock>;
365 <    return if (!defined $response);
388 <    chop $response;
389 <    if ($response eq "ERROR") {
365 >    if ($response eq "ERROR\n") {
366          close($sock);
367          print "Server configuration changed.  Reconfiguring with filter manager.\n";
368 <        &tcp_configure();
393 <        return;
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();
# Line 401 | Line 376 | sub send_tcp_heartbeat() {
376      
377      print $sock "ENDHEARTBEAT\n";
378      $response = <$sock>;
379 <    return if (!defined $response);
405 <    chop $response;
406 <    if (!$response eq "OK") {
379 >    if (!$response eq "OK\n") {
380          close($sock);
381          print "Server gave wrong response to ENDHEARTBEAT: $response\n";
382          &tcp_configure();
# Line 413 | Line 386 | sub send_tcp_heartbeat() {
386      close($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 $pidfile.
# Line 427 | Line 403 | sub write_pid() {
403      close PID;
404      
405      return;
406 + }
407 +
408 + #-----------------------------------------------------------------------
409 + # make_xml
410 + # Turns an array of plugins data into an XML string.
411 + #-----------------------------------------------------------------------
412 + sub make_xml() {
413 +    my($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 +            $curtag =~ s/(.*)\./$1/;
433 +            if((defined $nextline) && ($nextline =~ /^$curlevel$curtag\./)) {
434 +                $curline = "";
435 +            }
436 +            else {
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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