1 package server_server_com;
2 use Exporter;
3 @ISA = qw(Exporter);
4 my @events = (
5 'new_server',
6 'confirm_new_server',
7 'new_foreign_client',
8 'trigger_wake',
9 );
10 @EXPORT = @events;
12 use strict;
13 use warnings;
14 use Data::Dumper;
15 use GOSA::GosaSupportDaemon;
16 use Time::HiRes qw( usleep);
17 use Socket;
20 BEGIN {}
22 END {}
24 ### Start ######################################################################
26 sub get_events {
27 return \@events;
28 }
31 sub new_server {
32 my ($msg, $msg_hash, $session_id) = @_ ;
33 my $header = @{$msg_hash->{'header'}}[0];
34 my $source = @{$msg_hash->{'source'}}[0];
35 my $target = @{$msg_hash->{'target'}}[0];
36 my $key = @{$msg_hash->{'key'}}[0];
37 my @clients = exists $msg_hash->{'client'} ? @{$msg_hash->{'client'}} : qw();
39 # sanity check
40 if (ref $key eq 'HASH') {
41 &main::daemon_log("$session_id ERROR: 'new_server'-message from host '$source' contains no key!", 1);
42 return;
43 }
45 # add foreign server to known_server_db
46 my $func_dic = {table=>$main::known_server_tn,
47 primkey=>['hostname'],
48 hostname => $source,
49 status => "new_server",
50 hostkey => $key,
51 timestamp=>&get_time(),
52 };
53 my $res = $main::known_server_db->add_dbentry($func_dic);
54 if (not $res == 0) {
55 &main::daemon_log("$session_id ERROR: server_server_com.pm: cannot add server to known_server_db: $res", 1);
56 } else {
57 &main::daemon_log("$session_id INFO: server_server_com.pm: server '$source' successfully added to known_server_db", 5);
58 }
60 # delete all entries at foreign_clients_db coresponding to this server
61 my $del_sql = "DELETE FROM $main::foreign_clients_tn WHERE regserver='$source' ";
62 my $del_res = $main::foreign_clients_db->exec_statement($del_sql);
64 # add clients of foreign server to known_foreign_clients_db
65 my @sql_list;
66 foreach my $client (@clients) {
67 my @client_details = split(/,/, $client);
69 # workaround to avoid double entries in foreign_clients_db
70 my $del_sql = "DELETE FROM $main::foreign_clients_tn WHERE hostname='".$client_details[0]."'";
71 push(@sql_list, $del_sql);
73 my $sql = "INSERT INTO $main::foreign_clients_tn VALUES ("
74 ."'".$client_details[0]."'," # hostname
75 ."'".$client_details[1]."'," # macaddress
76 ."'".$source."'," # regserver
77 ."'".&get_time()."')"; # timestamp
78 push(@sql_list, $sql);
79 }
80 if (@sql_list) {
81 my $len = @sql_list;
82 $len /= 2;
83 &main::daemon_log("$session_id DEBUG: Inserting ".$len." entries to foreign_clients_db", 8);
84 my $res = $main::foreign_clients_db->exec_statementlist(\@sql_list);
85 }
87 # fetch all registered clients
88 my $client_sql = "SELECT * FROM $main::known_clients_tn";
89 my $client_res = $main::known_clients_db->exec_statement($client_sql);
92 # add already connected clients to registration message
93 my $myhash = &create_xml_hash('confirm_new_server', $main::server_address, $source);
94 &add_content2xml_hash($myhash, 'key', $key);
95 map(&add_content2xml_hash($myhash, 'client', @{$_}[0].",".@{$_}[4]), @$client_res);
97 # build registration message and send it
98 my $out_msg = &create_xml_string($myhash);
101 # build confirm_new_server message
102 #my %data = ( key=>$key );
103 #my $out_msg = &build_msg('confirm_new_server', $main::server_address, $source, \%data);
104 my $error = &main::send_msg_to_target($out_msg, $source, $main::ServerPackages_key, 'confirm_new_server', $session_id);
106 return;
107 }
110 sub confirm_new_server {
111 my ($msg, $msg_hash, $session_id) = @_ ;
112 my $header = @{$msg_hash->{'header'}}[0];
113 my $source = @{$msg_hash->{'source'}}[0];
114 my $key = @{$msg_hash->{'key'}}[0];
115 my @clients = exists $msg_hash->{'client'} ? @{$msg_hash->{'client'}} : qw();
117 my $sql = "UPDATE $main::known_server_tn SET status='$header', hostkey='$key' WHERE hostname='$source'";
118 my $res = $main::known_server_db->update_dbentry($sql);
120 # add clients of foreign server to known_foreign_clients_db
121 my @sql_list;
122 foreach my $client (@clients) {
123 my @client_details = split(/,/, $client);
125 # workaround to avoid double entries in foreign_clients_db
126 my $del_sql = "DELETE FROM $main::foreign_clients_tn WHERE hostname='".$client_details[0]."'";
127 push(@sql_list, $del_sql);
129 my $sql = "INSERT INTO $main::foreign_clients_tn VALUES ("
130 ."'".$client_details[0]."'," # hostname
131 ."'".$client_details[1]."'," # macaddress
132 ."'".$source."'," # regserver
133 ."'".&get_time()."')"; # timestamp
134 push(@sql_list, $sql);
135 }
136 if (@sql_list) {
137 my $len = @sql_list;
138 $len /= 2;
139 &main::daemon_log("$session_id DEBUG: Inserting ".$len." entries to foreign_clients_db", 8);
140 my $res = $main::foreign_clients_db->exec_statementlist(\@sql_list);
141 }
144 return;
145 }
148 sub new_foreign_client {
149 my ($msg, $msg_hash, $session_id) = @_ ;
150 my $header = @{$msg_hash->{'header'}}[0];
151 my $source = @{$msg_hash->{'source'}}[0];
152 my $hostname = @{$msg_hash->{'client'}}[0];
153 my $macaddress = @{$msg_hash->{'macaddress'}}[0];
154 # if new client is known in known_clients_db
155 my $check_sql = "SELECT * FROM $main::known_clients_tn WHERE (macaddress LIKE '$macaddress')";
156 my $check_res = $main::known_clients_db->select_dbentry($check_sql);
158 if( (keys(%$check_res) == 1) ) {
159 my $host_key = $check_res->{1}->{'hostkey'};
161 # check if new client is still alive
162 my $client_hash = &create_xml_hash("ping", $main::server_address, $hostname);
163 &add_content2xml_hash($client_hash, 'session_id', $session_id);
164 my $client_msg = &create_xml_string($client_hash);
165 my $error = &main::send_msg_to_target($client_msg, $hostname, $host_key, 'ping', $session_id);
166 my $message_id;
167 my $i = 0;
168 while (1) {
169 $i++;
170 my $sql = "SELECT * FROM $main::incoming_tn WHERE headertag='answer_$session_id'";
171 my $res = $main::incoming_db->exec_statement($sql);
172 if (ref @$res[0] eq "ARRAY") {
173 $message_id = @{@$res[0]}[0];
174 last;
175 }
177 # do not run into a endless loop
178 if ($i > 50) { last; }
179 usleep(100000);
180 }
182 # client is alive
183 # -> new_foreign_client will be ignored
184 if (defined $message_id) {
185 &main::daemon_log("$session_id ERROR: At new_foreign_clients: host '$hostname' is reported as a new foreign client, ".
186 "but the host is still registered at this server. So, the new_foreign_client-msg will be ignored: $msg", 1);
187 }
188 }
191 # new client is not found in known_clients_db or
192 # new client is dead -> new_client-msg from foreign server is valid
193 # -> client will be deleted from known_clients_db
194 # -> inserted to foreign_clients_db
196 my $del_sql = "DELETE FROM $main::known_clients_tn WHERE (hostname='$hostname')";
197 my $del_res = $main::known_clients_db->exec_statement($del_sql);
198 my $func_dic = { table => $main::foreign_clients_tn,
199 primkey => ['hostname'],
200 hostname => $hostname,
201 macaddress => $macaddress,
202 regserver => $source,
203 timestamp => &get_time(),
204 };
205 my $res = $main::foreign_clients_db->add_dbentry($func_dic);
206 if (not $res == 0) {
207 &main::daemon_log("$session_id ERROR: server_server_com.pm: cannot add server to foreign_clients_db: $res", 1);
208 } else {
209 &main::daemon_log("$session_id INFO: server_server_com.pm: client '$hostname' successfully added to foreign_clients_db", 5);
210 }
212 return;
213 }
216 sub trigger_wake {
217 my ($msg, $msg_hash, $session_id) = @_ ;
219 foreach (@{$msg_hash->{macAddress}}){
220 &main::daemon_log("$session_id INFO: trigger wake for $_", 5);
221 my $host = $_;
222 my $ipaddr = '255.255.255.255';
223 my $port = getservbyname('discard', 'udp');
225 my ($raddr, $them, $proto);
226 my ($hwaddr, $hwaddr_re, $pkt);
228 # get the hardware address (ethernet address)
229 $hwaddr_re = join(':', ('[0-9A-Fa-f]{1,2}') x 6);
230 if ($host =~ m/^$hwaddr_re$/) {
231 $hwaddr = $host;
232 } else {
233 &main::daemon_log("$session_id ERROR: trigger_wake called with non mac address", 1);
234 }
236 # Generate magic sequence
237 foreach (split /:/, $hwaddr) {
238 $pkt .= chr(hex($_));
239 }
240 $pkt = chr(0xFF) x 6 . $pkt x 16 . $main::wake_on_lan_passwd;
242 # Allocate socket and send packet
244 $raddr = gethostbyname($ipaddr);
245 $them = pack_sockaddr_in($port, $raddr);
246 $proto = getprotobyname('udp');
248 socket(S, AF_INET, SOCK_DGRAM, $proto) or die "socket : $!";
249 setsockopt(S, SOL_SOCKET, SO_BROADCAST, 1) or die "setsockopt : $!";
251 send(S, $pkt, 0, $them) or die "send : $!";
252 close S;
253 }
255 return;
256 }
259 1;