host/ihost-perl/ihost.pl

#!/usr/bin/perl -w

# -----------------------------------------------------------
# Perl i-scream Host.
# http://www.i-scream.org.uk
#
# An all-in-one script to act as an i-scream host on
# a typical Unix/Linux box.
#
# $Author: tdb1 $
# $Id: ihost.pl,v 1.41 2001/11/20 12:47:03 tdb1 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
             $fqdn
             $pidfile
             $retry_wait
             @data
            );

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;
$retry_wait = 60;

# write our PID to a file
# use home dir by default
#$pidfile = $ENV{"HOME"};
# or drop it in /var/tmp if we can't find HOME
$pidfile = "/var/tmp" if not defined $pidfile;
$pidfile .= "/.ihost.pid";
&write_pid();

&tcp_configure();
&send_udp_packet();

$last_udp_time = time;
$last_tcp_time = time;
while (1) {
    my($time) = time;
    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 = $time;
    }
    my($next_udp) = $udp_update_time - $time + $last_udp_time;
    my($next_tcp) = $tcp_update_time - $time + $last_tcp_time;
    my($delay);
    if ($next_udp < $next_tcp) {
        $delay = $next_udp
    }
    else {
        $delay = $next_tcp;
    }
    sleep $delay;
}

# we'll probably never get here...
`rm -f $pidfile`;
exit(0);


#-----------------------------------------------------------------------
# wait_then_retry
# Waits for the period of time specified in $retry_wait, then attempts
# to reconfigure with the server.
#-----------------------------------------------------------------------
sub wait_then_retry() {
    print "Will retry configuration with filter manager in $retry_wait seconds.\n";
    sleep $retry_wait;
}


#-----------------------------------------------------------------------
# tcp_configure
# Establishes a TCP connection to the specified i-scream filter manager.
# The host then requests details from the server, such as the intervals
# at which to send UDP packets.
#-----------------------------------------------------------------------
sub tcp_configure() {
    
    while (1) {
        my($sock) = new IO::Socket::INET(
                                         PeerAddr => $filter_manager_addr,
                                         PeerPort => $filter_manager_port,
                                         Proto => 'tcp'
                                        ) or die "Cannot connect!";
        if (!defined $sock) {
            print "IHOST ERROR: Could not connect to $filter_manager_addr:$filter_manager_port.\n";
            print "Please check that there is an i-scream server at this address.\n";
            wait_then_retry();
            next;
        }

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

        print "Config started okay.\n";
    
        print $sock "LASTMODIFIED\n";
        $response = <$sock>;
        if (!$response) {
            print "The i-scream server did not return anything for the LASTMODIFIED command.\n";
            close($sock);
            wait_then_retry();
            next;
        }
        chop $response;
        $last_modified = $response;
    
        print "Config last modified: ". (scalar localtime $last_modified/1000) . "\n";

        print $sock "FILELIST\n";
        $response = <$sock>;
        if (!$response) {
            print "The i-scream server did not provide a configuration file list.\n";
            close($sock);
            wait_then_retry();
            next;
        }
        chop $response;
        $file_list = $response;

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

        print $sock "FQDN\n";
        $response = <$sock>;
        if (!$response) {
            print "The i-scream server did not tell us our FQDN.\n";
            close($sock);
            wait_then_retry();
            next;
        }
        chop $response;
        $fqdn = $response;

        print "FQDN returned: $fqdn\n";

        print $sock "UDPUpdateTime\n";
        $response = <$sock>;
        if (!$response) {
            print "The i-scream server did not give us a UDPUpdateTime.\n";
            close($sock);
            wait_then_retry();
            next;
        }
        chop $response;
        $udp_update_time = $response;

        print $sock "TCPUpdateTime\n";
        $response = <$sock>;
        if (!$response) {
            print "The i-scream server did not give us a TCPUpdateTime.\n";
            close($sock);
            wait_then_retry();
            next;
        }
        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>;
        if ($response && !($response eq "OK\n")) {
            print "ENDCONFIG command to server failed.  Terminated.\n";
            close($sock);
            wait_then_retry();
            next;
        }

        print "Config ended.\n";
    
        print $sock "FILTER\n";
        $response = <$sock>;
        if (!$response) {
            print "Failed: Could not get a filter address from the filter manager.\n";
            close($sock);
            wait_then_retry();
            next;
        }
        chop $response;
        $response =~ /^(.*);(.*);(.*)/;
        if ($response eq "ERROR") {
            print "There are no active configured filters for your host.\n";
            close($sock);
            wait_then_retry();
            next;
        }
        ($filter_addr, $udp_port, $tcp_port) = ($1, $2, $3);
        unless (defined($filter_addr) && defined($udp_port) && defined($tcp_port)) {
            print "Failed: Filter address response from server did not make sense: $response\n";
            close($sock);
            wait_then_retry();
            next;
        }
    
        print "Got filter data ($filter_addr, $udp_port, $tcp_port)\n";

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

        print "Configuration finished sucessfully!\n";
        last;
    }
    return;
}


#-----------------------------------------------------------------------
# send_udp_packet
# Sends a UDP packet to an i-scream filter.
# The packet contains XML markup describing some of the machine's state.
# Receipt of UDP packets is not guaranteed.
#-----------------------------------------------------------------------
sub send_udp_packet() {

    my($plugins_dir) = "plugins";
    
    opendir PLUGINS, $plugins_dir;
    my(@plugins) = readdir PLUGINS;
    foreach my $plugin (@plugins) {
        push @data, `$plugins_dir/$plugin` if -x "$plugins_dir/$plugin" && -f "$plugins_dir/$plugin";
    }
    
    # get some extra data
    my($date) = time;
    my($ip);
    $ip = inet_ntoa(scalar(gethostbyname(hostname())) || 'localhost') or $ip = 'localhost';
    
    # add some extra data to the array
    push(@data, "packet.attributes.seq_no=$seq_no");
    push(@data, "packet.attributes.machine_name=$fqdn");
    push(@data, "packet.attributes.date=$date");
    push(@data, "packet.attributes.type=data");
    push(@data, "packet.attributes.ip=$ip");
    
    # sort the data
    @data = sort(@data);
    
    # turn the array into some nice XML
    my($xml) = &make_xml("", "");
    
    my($sock) = new IO::Socket::INET (
                                      PeerPort => $udp_port,
                                      PeerAddr => $filter_addr,
                                      Proto => 'udp'
                                     ) or die "Could not send UDP: $!\n";
    
    print $sock $xml or die "Could not send UDP packet: $!\n";
    close($sock);
    $seq_no++;
    print "-";
    
    return;
}


#-----------------------------------------------------------------------
# send_tcp_heartbeat
# Establishes a TCP connection to an i-scream filter.
# The heartbeat is used as a guaranteed "I'm alive" delivery mechanism.
# If we need to reconfigure, then we complete the heartbeat before
# doing so.
#-----------------------------------------------------------------------
sub send_tcp_heartbeat() {

    my ($doReconfigure) = 0;

    my($sock) = new IO::Socket::INET(
                                     PeerAddr => $filter_addr,
                                     PeerPort => $tcp_port,
                                     Proto => 'tcp'
                                    ) or return;
    if (!defined $sock) {
        print "IHOST WARNING: Failed to deliver a heartbeat to the i-scream filter.\n";
        &tcp_configure();
        return;
    }

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

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

    print $sock "$file_list\n";
    $response = <$sock>;
    if (!$response eq "OK\n") {
        close($sock);
        print "Server gave wrong response to file list: $response\n";
        &tcp_configure();
        return;
    }
    
    print $sock "$last_modified\n";
    $response = <$sock>;
    if ($response eq "ERROR\n") {
        close($sock);
        print "Server configuration changed.  Reconfiguring with filter manager.\n";
        $doReconfigure = 1;
    }
    if (!$response eq "OK\n") {
        close($sock);
        print "Server gave wrong response to HEARTBEAT: $response\n";
        &tcp_configure();
        return;
    }
    
    print $sock "ENDHEARTBEAT\n";
    $response = <$sock>;
    if (!$response eq "OK\n") {
        close($sock);
        print "Server gave wrong response to ENDHEARTBEAT: $response\n";
        &tcp_configure();
        return;
    }
    
    close($sock);
    print "^";
    
    &tcp_configure() if $doReconfigure;
    
    return;
}


#-----------------------------------------------------------------------
# write_pid
# Writes the PID (process ID) of this instance to $pidfile.
# This is then used by a seperate script to check (and restart) ihost.
#-----------------------------------------------------------------------
sub write_pid() {
    open PID, ">$pidfile";
    print PID $$;
    close PID;
    
    return;
}

#-----------------------------------------------------------------------
# make_xml
# Turns an array of plugins data into an XML string.
#-----------------------------------------------------------------------
sub make_xml() {
    my($curlevel, $curline) = @_;
    my($xmltemp) = ""; my($curtag) = ""; my($attributes) = "";
    while(1) {
        $curline = shift(@data) if $curline eq ""; chomp $curline;
        if($curline =~ /^$curlevel([^\.\s]+\.)/) {
            $curtag=$1;
        }
        if($curline =~ /^$curlevel$curtag([^\.\s]+)\s+(.*)$/) {
            $xmltemp .= "<$1$attributes>$2</$1>";
        }
        elsif($curline =~ /^$curlevel$curtag(attributes)\.([^\.=]+)=(.*)$/) {
            $attributes .= " $2=\"$3\"";
        }
        else {
            $xmltemp .= &make_xml("$curlevel$curtag", $curline);
        }
        my($nextline) = $data[0]; chomp $nextline if defined $nextline;
        $curtag =~ s/(.*)\./$1/;                
        if((defined $nextline) && ($nextline =~ /^$curlevel$curtag\./)) {
            $curline = "";
        }
        else {
            $xmltemp = "<$curtag$attributes>$xmltemp</$curtag>" unless $curtag eq "";
            return $xmltemp;
        }
    }
}
Revision:	1.42
Committed:	Wed Nov 21 10:08:20 2001 UTC (23 years ago) by tdb
Content type:	text/plain
Branch:	MAIN
Changes since 1.41:	+2 -2 lines
Log Message:	This change has been rolled back. It caused no end of problems for us because our home directories are NFS mounted - so the PID file was the same on a whole block of our hosts... which meant the PID checking really didn't want to work :) Not to mention the problems introduced with the NFS going funny at times ;) <sigh>
#	Content
1	#!/usr/bin/perl -w
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.
9	#
10	# $Author: tdb1 $
11	# $Id: ihost.pl,v 1.41 2001/11/20 12:47:03 tdb1 Exp $
12	#------------------------------------------------------------
13
14	$\| = 1;
15
16	use strict;
17	use IO::Socket;
18	use Sys::Hostname;
19
20	use vars qw (
21	$filter_manager_addr
22	$filter_manager_port
23	$seq_no
24	$udp_update_time
25	$tcp_update_time
26	$last_udp_time
27	$last_tcp_time
28	$last_modified
29	$udp_port
30	$tcp_port
31	$filter_addr
32	$file_list
33	$fqdn
34	$pidfile
35	$retry_wait
36	@data
37	);
38
39	if (@ARGV != 2) {
40	die "Usage: ihost.pl [i-scream filter manager] [TCP port]\n";
41	}
42
43	$filter_manager_addr = $ARGV[0];
44	$filter_manager_port = $ARGV[1];
45
46	$seq_no = 1;
47	$retry_wait = 60;
48
49	# write our PID to a file
50	# use home dir by default
51	#$pidfile = $ENV{"HOME"};
52	# or drop it in /var/tmp if we can't find HOME
53	$pidfile = "/var/tmp" if not defined $pidfile;
54	$pidfile .= "/.ihost.pid";
55	&write_pid();
56
57	&tcp_configure();
58	&send_udp_packet();
59
60	$last_udp_time = time;
61	$last_tcp_time = time;
62	while (1) {
63	my($time) = time;
64	if ($time >= $last_udp_time + $udp_update_time) {
65	&send_udp_packet();
66	$last_udp_time = $time;
67	}
68	if ($time >= $last_tcp_time + $tcp_update_time) {
69	&send_tcp_heartbeat();
70	$last_tcp_time = $time;
71	}
72	my($next_udp) = $udp_update_time - $time + $last_udp_time;
73	my($next_tcp) = $tcp_update_time - $time + $last_tcp_time;
74	my($delay);
75	if ($next_udp < $next_tcp) {
76	$delay = $next_udp
77	}
78	else {
79	$delay = $next_tcp;
80	}
81	sleep $delay;
82	}
83
84	# we'll probably never get here...
85	`rm -f $pidfile`;
86	exit(0);
87
88
89	#-----------------------------------------------------------------------
90	# wait_then_retry
91	# Waits for the period of time specified in $retry_wait, then attempts
92	# to reconfigure with the server.
93	#-----------------------------------------------------------------------
94	sub wait_then_retry() {
95	print "Will retry configuration with filter manager in $retry_wait seconds.\n";
96	sleep $retry_wait;
97	}
98
99
100	#-----------------------------------------------------------------------
101	# tcp_configure
102	# Establishes a TCP connection to the specified i-scream filter manager.
103	# The host then requests details from the server, such as the intervals
104	# at which to send UDP packets.
105	#-----------------------------------------------------------------------
106	sub tcp_configure() {
107
108	while (1) {
109	my($sock) = new IO::Socket::INET(
110	PeerAddr => $filter_manager_addr,
111	PeerPort => $filter_manager_port,
112	Proto => 'tcp'
113	) or die "Cannot connect!";
114	if (!defined $sock) {
115	print "IHOST ERROR: Could not connect to $filter_manager_addr:$filter_manager_port.\n";
116	print "Please check that there is an i-scream server at this address.\n";
117	wait_then_retry();
118	next;
119	}
120
121	# Now run through the configuration process...
122	my($response);
123
124	print $sock "STARTCONFIG\n";
125	$response = <$sock>;
126	if ($response && !($response eq "OK\n")) {
127	print "The i-scream server rejected the STARTCONFIG command.\n";
128	close($sock);
129	wait_then_retry();
130	next;
131	}
132
133	print "Config started okay.\n";
134
135	print $sock "LASTMODIFIED\n";
136	$response = <$sock>;
137	if (!$response) {
138	print "The i-scream server did not return anything for the LASTMODIFIED command.\n";
139	close($sock);
140	wait_then_retry();
141	next;
142	}
143	chop $response;
144	$last_modified = $response;
145
146	print "Config last modified: ". (scalar localtime $last_modified/1000) . "\n";
147
148	print $sock "FILELIST\n";
149	$response = <$sock>;
150	if (!$response) {
151	print "The i-scream server did not provide a configuration file list.\n";
152	close($sock);
153	wait_then_retry();
154	next;
155	}
156	chop $response;
157	$file_list = $response;
158
159	print "File list obtained: $file_list\n";
160
161	print $sock "FQDN\n";
162	$response = <$sock>;
163	if (!$response) {
164	print "The i-scream server did not tell us our FQDN.\n";
165	close($sock);
166	wait_then_retry();
167	next;
168	}
169	chop $response;
170	$fqdn = $response;
171
172	print "FQDN returned: $fqdn\n";
173
174	print $sock "UDPUpdateTime\n";
175	$response = <$sock>;
176	if (!$response) {
177	print "The i-scream server did not give us a UDPUpdateTime.\n";
178	close($sock);
179	wait_then_retry();
180	next;
181	}
182	chop $response;
183	$udp_update_time = $response;
184
185	print $sock "TCPUpdateTime\n";
186	$response = <$sock>;
187	if (!$response) {
188	print "The i-scream server did not give us a TCPUpdateTime.\n";
189	close($sock);
190	wait_then_retry();
191	next;
192	}
193	chop $response;
194	$tcp_update_time = $response;
195
196	print "UDP packet period: $udp_update_time seconds.\nTCP heartbeat period: $tcp_update_time seconds.\n";
197
198	print $sock "ENDCONFIG\n";
199	$response = <$sock>;
200	if ($response && !($response eq "OK\n")) {
201	print "ENDCONFIG command to server failed. Terminated.\n";
202	close($sock);
203	wait_then_retry();
204	next;
205	}
206
207	print "Config ended.\n";
208
209	print $sock "FILTER\n";
210	$response = <$sock>;
211	if (!$response) {
212	print "Failed: Could not get a filter address from the filter manager.\n";
213	close($sock);
214	wait_then_retry();
215	next;
216	}
217	chop $response;
218	$response =~ /^(.);(.);(.*)/;
219	if ($response eq "ERROR") {
220	print "There are no active configured filters for your host.\n";
221	close($sock);
222	wait_then_retry();
223	next;
224	}
225	($filter_addr, $udp_port, $tcp_port) = ($1, $2, $3);
226	unless (defined($filter_addr) && defined($udp_port) && defined($tcp_port)) {
227	print "Failed: Filter address response from server did not make sense: $response\n";
228	close($sock);
229	wait_then_retry();
230	next;
231	}
232
233	print "Got filter data ($filter_addr, $udp_port, $tcp_port)\n";
234
235	print $sock "END\n";
236	$response = <$sock>;
237	if ($response && ($response eq "OK\n")) {
238	print "Host successfully configured via TCP.\n"
239	}
240	else {
241	print "The server failed the host configuration on the END command.\n";
242	close($sock);
243	wait_then_retry();
244	next;
245	}
246
247	close($sock);
248
249	print "Configuration finished sucessfully!\n";
250	last;
251	}
252	return;
253	}
254
255
256	#-----------------------------------------------------------------------
257	# send_udp_packet
258	# Sends a UDP packet to an i-scream filter.
259	# The packet contains XML markup describing some of the machine's state.
260	# Receipt of UDP packets is not guaranteed.
261	#-----------------------------------------------------------------------
262	sub send_udp_packet() {
263
264	my($plugins_dir) = "plugins";
265
266	opendir PLUGINS, $plugins_dir;
267	my(@plugins) = readdir PLUGINS;
268	foreach my $plugin (@plugins) {
269	push @data, `$plugins_dir/$plugin` if -x "$plugins_dir/$plugin" && -f "$plugins_dir/$plugin";
270	}
271
272	# get some extra data
273	my($date) = time;
274	my($ip);
275	$ip = inet_ntoa(scalar(gethostbyname(hostname())) \|\| 'localhost') or $ip = 'localhost';
276
277	# add some extra data to the array
278	push(@data, "packet.attributes.seq_no=$seq_no");
279	push(@data, "packet.attributes.machine_name=$fqdn");
280	push(@data, "packet.attributes.date=$date");
281	push(@data, "packet.attributes.type=data");
282	push(@data, "packet.attributes.ip=$ip");
283
284	# sort the data
285	@data = sort(@data);
286
287	# turn the array into some nice XML
288	my($xml) = &make_xml("", "");
289
290	my($sock) = new IO::Socket::INET (
291	PeerPort => $udp_port,
292	PeerAddr => $filter_addr,
293	Proto => 'udp'
294	) or die "Could not send UDP: $!\n";
295
296	print $sock $xml or die "Could not send UDP packet: $!\n";
297	close($sock);
298	$seq_no++;
299	print "-";
300
301	return;
302	}
303
304
305	#-----------------------------------------------------------------------
306	# send_tcp_heartbeat
307	# Establishes a TCP connection to an i-scream filter.
308	# The heartbeat is used as a guaranteed "I'm alive" delivery mechanism.
309	# If we need to reconfigure, then we complete the heartbeat before
310	# doing so.
311	#-----------------------------------------------------------------------
312	sub send_tcp_heartbeat() {
313
314	my ($doReconfigure) = 0;
315
316	my($sock) = new IO::Socket::INET(
317	PeerAddr => $filter_addr,
318	PeerPort => $tcp_port,
319	Proto => 'tcp'
320	) or return;
321	if (!defined $sock) {
322	print "IHOST WARNING: Failed to deliver a heartbeat to the i-scream filter.\n";
323	&tcp_configure();
324	return;
325	}
326
327	# Now run through the configuration process.
328	my($response);
329
330	print $sock "HEARTBEAT\n";
331	$response = <$sock>;
332	if (!$response eq "OK\n") {
333	close($sock);
334	print "Server gave wrong response to HEARTBEAT: $response\n";
335	&tcp_configure();
336	return;
337	}
338
339	print $sock "CONFIG\n";
340	$response = <$sock>;
341	if (!$response eq "OK\n") {
342	close($sock);
343	print "Server gave wrong response to CONFIG: $response\n";
344	&tcp_configure();
345	return;
346	}
347
348	print $sock "$file_list\n";
349	$response = <$sock>;
350	if (!$response eq "OK\n") {
351	close($sock);
352	print "Server gave wrong response to file list: $response\n";
353	&tcp_configure();
354	return;
355	}
356
357	print $sock "$last_modified\n";
358	$response = <$sock>;
359	if ($response eq "ERROR\n") {
360	close($sock);
361	print "Server configuration changed. Reconfiguring with filter manager.\n";
362	$doReconfigure = 1;
363	}
364	if (!$response eq "OK\n") {
365	close($sock);
366	print "Server gave wrong response to HEARTBEAT: $response\n";
367	&tcp_configure();
368	return;
369	}
370
371	print $sock "ENDHEARTBEAT\n";
372	$response = <$sock>;
373	if (!$response eq "OK\n") {
374	close($sock);
375	print "Server gave wrong response to ENDHEARTBEAT: $response\n";
376	&tcp_configure();
377	return;
378	}
379
380	close($sock);
381	print "^";
382
383	&tcp_configure() if $doReconfigure;
384
385	return;
386	}
387
388
389	#-----------------------------------------------------------------------
390	# write_pid
391	# Writes the PID (process ID) of this instance to $pidfile.
392	# This is then used by a seperate script to check (and restart) ihost.
393	#-----------------------------------------------------------------------
394	sub write_pid() {
395	open PID, ">$pidfile";
396	print PID $$;
397	close PID;
398
399	return;
400	}
401
402	#-----------------------------------------------------------------------
403	# make_xml
404	# Turns an array of plugins data into an XML string.
405	#-----------------------------------------------------------------------
406	sub make_xml() {
407	my($curlevel, $curline) = @_;
408	my($xmltemp) = ""; my($curtag) = ""; my($attributes) = "";
409	while(1) {
410	$curline = shift(@data) if $curline eq ""; chomp $curline;
411	if($curline =~ /^$curlevel([^\.\s]+\.)/) {
412	$curtag=$1;
413	}
414	if($curline =~ /^$curlevel$curtag([^\.\s]+)\s+(.*)$/) {
415	$xmltemp .= "<$1$attributes>$2</$1>";
416	}
417	elsif($curline =~ /^$curlevel$curtag(attributes)\.([^\.=]+)=(.*)$/) {
418	$attributes .= " $2=\"$3\"";
419	}
420	else {
421	$xmltemp .= &make_xml("$curlevel$curtag", $curline);
422	}
423	my($nextline) = $data[0]; chomp $nextline if defined $nextline;
424	$curtag =~ s/(.*)\./$1/;
425	if((defined $nextline) && ($nextline =~ /^$curlevel$curtag\./)) {
426	$curline = "";
427	}
428	else {
429	$xmltemp = "<$curtag$attributes>$xmltemp</$curtag>" unless $curtag eq "";
430	return $xmltemp;
431	}
432	}
433	}