1 package server_server_com;
2 use Exporter;
3 @ISA = qw(Exporter);
4 my @events = (
5 'information_sharing',
6 'new_server',
7 'confirm_new_server',
8 'new_foreign_client',
9 'trigger_wake',
10 'foreign_job_updates',
11 'confirm_usr_msg',
12 );
13 @EXPORT = @events;
15 use strict;
16 use warnings;
17 use Data::Dumper;
18 use GOSA::GosaSupportDaemon;
19 use Time::HiRes qw( usleep);
20 use Socket;
23 BEGIN {}
25 END {}
27 ### Start ######################################################################
29 sub get_events {
30 return \@events;
31 }
34 sub information_sharing {
35 my ($msg, $msg_hash, $session_id) = @_ ;
36 my $header = @{$msg_hash->{'header'}}[0];
37 my $source = @{$msg_hash->{'source'}}[0];
38 my $target = @{$msg_hash->{'target'}}[0];
40 # Handling of msg tag 'new_user'
41 if (exists $msg_hash->{'new_user'}) {
42 my $new_user_list = $msg_hash->{'new_user'};
44 # Sanity check of new_user_list
45 if (ref($new_user_list) eq 'HASH') {
46 &main::daemon_log("$session_id ERROR: 'new_user'-tag in incoming msg has no content!", 1);
48 } else {
49 # Add each user to login_users_db
50 foreach my $new_user_info (@$new_user_list) {
51 my ($client, $user) = split(/;/, $new_user_info);
52 &main::daemon_log("$session_id INFO: server '$source' reports user '$user' is logged in at client '$client'", 5);
53 my %add_hash = ( table=>$main::login_users_tn,
54 primkey=> ['client', 'user'],
55 client=>$client,
56 user=>$user,
57 timestamp=>&get_time,
58 regserver=>$source,
59 );
60 my ($res, $error_str) = $main::login_users_db->add_dbentry( \%add_hash );
61 if ($res != 0) {
62 &main::daemon_log("$session_id ERROR: cannot add entry to known_clients: $error_str", 1);
63 }
64 }
65 }
66 }
68 # Handling of msg tag 'user_db'
69 if (exists $msg_hash->{'user_db'}) {
70 my $user_db_list = $msg_hash->{'user_db'};
72 # Sanity check of user_db_list
73 if (ref($user_db_list) eq 'HASH') {
74 &main::daemon_log("$session_id ERROR: 'user_db'-tag in incoming msg has no content!", 1);
76 } else {
77 # Delete all old login information
78 my $sql = "DELETE FROM $main::login_users_tn WHERE regserver='$source'";
79 my $res = $main::login_users_db->exec_statement($sql);
81 # Add each user to login_users_db
82 foreach my $user_db_info (@$user_db_list) {
83 my ($client, $user) = split(/;/, $user_db_info);
84 &main::daemon_log("$session_id INFO: server '$source' reports user '$user' is logged in at client '$client'", 5);
85 my %add_hash = ( table=>$main::login_users_tn,
86 primkey=> ['client', 'user'],
87 client=>$client,
88 user=>$user,
89 timestamp=>&get_time,
90 regserver=>$source,
91 );
92 my ($res, $error_str) = $main::login_users_db->add_dbentry( \%add_hash );
93 if ($res != 0) {
94 &main::daemon_log("$session_id ERROR: cannot add entry to known_clients: $error_str", 1);
95 }
96 }
97 }
98 }
100 return;
101 }
103 sub foreign_job_updates {
104 my ($msg, $msg_hash, $session_id) = @_ ;
105 my $header = @{$msg_hash->{'header'}}[0];
106 my $source = @{$msg_hash->{'source'}}[0];
107 my $target = @{$msg_hash->{'target'}}[0];
109 my @act_keys = keys %$msg_hash;
110 my @jobs;
111 foreach my $key (@act_keys) {
112 if ($key =~ /answer\d+/ ) { push(@jobs, $key); }
113 }
115 foreach my $foreign_job (@jobs) {
117 # add job to job queue
118 my $func_dic = {table=>$main::job_queue_tn,
119 primkey=>['macaddress', 'headertag'],
120 timestamp=>@{@{$msg_hash->{$foreign_job}}[0]->{'timestamp'}}[0],
121 status=>@{@{$msg_hash->{$foreign_job}}[0]->{'status'}}[0],
122 result=>@{@{$msg_hash->{$foreign_job}}[0]->{'result'}}[0],
123 progress=>@{@{$msg_hash->{$foreign_job}}[0]->{'progress'}}[0],
124 headertag=>@{@{$msg_hash->{$foreign_job}}[0]->{'headertag'}}[0],
125 targettag=>@{@{$msg_hash->{$foreign_job}}[0]->{'targettag'}}[0],
126 xmlmessage=>@{@{$msg_hash->{$foreign_job}}[0]->{'xmlmessage'}}[0],
127 macaddress=>@{@{$msg_hash->{$foreign_job}}[0]->{'macaddress'}}[0],
128 plainname=>@{@{$msg_hash->{$foreign_job}}[0]->{'plainname'}}[0],
129 siserver=>$source,
130 modified=>"0",
131 };
132 my $res = $main::job_db->add_dbentry($func_dic);
133 if (not $res == 0) {
134 &main::daemon_log("$session_id ERROR: ServerPackages: process_job_msg: $res", 1);
135 } else {
136 &main::daemon_log("$session_id INFO: ServerPackages: $header, job '".@{@{$msg_hash->{$foreign_job}}[0]->{'headertag'}}[0].
137 "' successfully added to job queue", 5);
138 }
139 }
141 return;
142 }
145 sub new_server {
146 my ($msg, $msg_hash, $session_id) = @_ ;
147 my $header = @{$msg_hash->{'header'}}[0];
148 my $source = @{$msg_hash->{'source'}}[0];
149 my $target = @{$msg_hash->{'target'}}[0];
150 my $key = @{$msg_hash->{'key'}}[0];
151 my $mac = exists $msg_hash->{'macaddress'} ? @{$msg_hash->{'macaddress'}}[0] : "" ;
152 my @clients = exists $msg_hash->{'client'} ? @{$msg_hash->{'client'}} : qw();
153 my @loaded_modules = exists $msg_hash->{'loaded_modules'} ? @{$msg_hash->{'loaded_modules'}} : qw();
155 # Ignor message if I'm already within a registration process for server $source
156 my $check_statement = "SELECT * FROM $main::known_server_tn WHERE status='new_server' AND hostname='$source'";
157 &main::daemon_log("$session_id DEBUG $check_statement", 7);
158 my $check_res = $main::known_server_db->select_dbentry($check_statement);
159 my $blocking_process = keys(%$check_res);
160 if ($blocking_process)
161 {
162 return;
163 }
165 # Sanity check
166 if (ref $key eq 'HASH') {
167 &main::daemon_log("$session_id ERROR: 'new_server'-message from host '$source' contains no key!", 1);
168 return;
169 }
170 # Add foreign server to known_server_db
171 my $new_update_time = &calc_timestamp(&get_time(), 'plus', $main::foreign_servers_register_delay);
172 my $func_dic = {table=>$main::known_server_tn,
173 primkey=>['hostname'],
174 hostname => $source,
175 macaddress => $mac,
176 status => "new_server",
177 hostkey => $key,
178 loaded_modules => join(',', @loaded_modules),
179 timestamp=>&get_time(),
180 update_time=>$new_update_time,
181 };
182 my $res = $main::known_server_db->add_dbentry($func_dic);
183 if (not $res == 0) {
184 &main::daemon_log("$session_id ERROR: server_server_com.pm: cannot add server to known_server_db: $res", 1);
185 } else {
186 &main::daemon_log("$session_id INFO: server_server_com.pm: server '$source' successfully added to known_server_db", 5);
187 }
189 # delete all entries at foreign_clients_db coresponding to this server
190 my $del_sql = "DELETE FROM $main::foreign_clients_tn WHERE regserver='$source' ";
191 my $del_res = $main::foreign_clients_db->exec_statement($del_sql);
193 # add clients of foreign server to known_foreign_clients_db
194 my @sql_list;
195 foreach my $client (@clients) {
196 my @client_details = split(/,/, $client);
198 # workaround to avoid double entries in foreign_clients_db
199 my $del_sql = "DELETE FROM $main::foreign_clients_tn WHERE hostname='".$client_details[0]."'";
200 push(@sql_list, $del_sql);
202 my $sql = "INSERT INTO $main::foreign_clients_tn VALUES ("
203 ."'".$client_details[0]."'," # hostname
204 ."'".$client_details[1]."'," # macaddress
205 ."'".$source."'," # regserver
206 ."'".&get_time()."')"; # timestamp
207 push(@sql_list, $sql);
208 }
209 if (@sql_list) {
210 my $len = @sql_list;
211 $len /= 2;
212 &main::daemon_log("$session_id DEBUG: Inserting ".$len." entries to foreign_clients_db", 8);
213 my $res = $main::foreign_clients_db->exec_statementlist(\@sql_list);
214 }
216 # fetch all registered clients
217 my $client_sql = "SELECT * FROM $main::known_clients_tn";
218 my $client_res = $main::known_clients_db->exec_statement($client_sql);
221 # add already connected clients to registration message
222 my $myhash = &create_xml_hash('confirm_new_server', $main::server_address, $source);
223 &add_content2xml_hash($myhash, 'key', $key);
224 map(&add_content2xml_hash($myhash, 'client', @{$_}[0].",".@{$_}[4]), @$client_res);
226 # add locally loaded gosa-si modules to registration message
227 my $loaded_modules = {};
228 while (my ($package, $pck_info) = each %$main::known_modules) {
229 foreach my $act_module (keys(%{@$pck_info[2]})) {
230 $loaded_modules->{$act_module} = "";
231 }
232 }
233 map(&add_content2xml_hash($myhash, "loaded_modules", $_), keys(%$loaded_modules));
235 # add macaddress to registration message
236 my ($host_ip, $host_port) = split(/:/, $source);
237 my $local_ip = &get_local_ip_for_remote_ip($host_ip);
238 my $network_interface= &get_interface_for_ip($local_ip);
239 my $host_mac = &get_mac_for_interface($network_interface);
240 &add_content2xml_hash($myhash, 'macaddress', $host_mac);
242 # build registration message and send it
243 my $out_msg = &create_xml_string($myhash);
244 my $error = &main::send_msg_to_target($out_msg, $source, $main::ServerPackages_key, 'confirm_new_server', $session_id);
246 return;
247 }
250 sub confirm_new_server {
251 my ($msg, $msg_hash, $session_id) = @_ ;
252 my $header = @{$msg_hash->{'header'}}[0];
253 my $source = @{$msg_hash->{'source'}}[0];
254 my $key = @{$msg_hash->{'key'}}[0];
255 my $mac = exists $msg_hash->{'macaddress'} ? @{$msg_hash->{'macaddress'}}[0] : "" ;
256 my @clients = exists $msg_hash->{'client'} ? @{$msg_hash->{'client'}} : qw();
257 my @loaded_modules = exists $msg_hash->{'loaded_modules'} ? @{$msg_hash->{'loaded_modules'}} : qw();
259 my $new_update_time = &calc_timestamp(&get_time(), 'plus', $main::foreign_servers_register_delay);
260 my $sql = "UPDATE $main::known_server_tn".
261 " SET status='$header', hostkey='$key', loaded_modules='".join(",",@loaded_modules)."', macaddress='$mac', update_time='$new_update_time'".
262 " WHERE hostname='$source'";
263 my $res = $main::known_server_db->update_dbentry($sql);
265 # add clients of foreign server to known_foreign_clients_db
266 my @sql_list;
267 foreach my $client (@clients) {
268 my @client_details = split(/,/, $client);
270 # workaround to avoid double entries in foreign_clients_db
271 my $del_sql = "DELETE FROM $main::foreign_clients_tn WHERE hostname='".$client_details[0]."'";
272 push(@sql_list, $del_sql);
274 my $sql = "INSERT INTO $main::foreign_clients_tn VALUES ("
275 ."'".$client_details[0]."'," # hostname
276 ."'".$client_details[1]."'," # macaddress
277 ."'".$source."'," # regserver
278 ."'".&get_time()."')"; # timestamp
279 push(@sql_list, $sql);
280 }
281 if (@sql_list) {
282 my $len = @sql_list;
283 $len /= 2;
284 &main::daemon_log("$session_id DEBUG: Inserting ".$len." entries to foreign_clients_db", 8);
285 my $res = $main::foreign_clients_db->exec_statementlist(\@sql_list);
286 }
289 return;
290 }
293 sub new_foreign_client {
294 my ($msg, $msg_hash, $session_id) = @_ ;
295 my $header = @{$msg_hash->{'header'}}[0];
296 my $source = @{$msg_hash->{'source'}}[0];
297 my $hostname = @{$msg_hash->{'client'}}[0];
298 my $macaddress = @{$msg_hash->{'macaddress'}}[0];
299 # if new client is known in known_clients_db
300 my $check_sql = "SELECT * FROM $main::known_clients_tn WHERE (macaddress LIKE '$macaddress')";
301 my $check_res = $main::known_clients_db->select_dbentry($check_sql);
303 if( (keys(%$check_res) == 1) ) {
304 my $host_key = $check_res->{1}->{'hostkey'};
306 # check if new client is still alive
307 my $client_hash = &create_xml_hash("ping", $main::server_address, $hostname);
308 &add_content2xml_hash($client_hash, 'session_id', $session_id);
309 my $client_msg = &create_xml_string($client_hash);
310 my $error = &main::send_msg_to_target($client_msg, $hostname, $host_key, 'ping', $session_id);
311 my $message_id;
312 my $i = 0;
313 while (1) {
314 $i++;
315 my $sql = "SELECT * FROM $main::incoming_tn WHERE headertag='answer_$session_id'";
316 my $res = $main::incoming_db->exec_statement($sql);
317 if (ref @$res[0] eq "ARRAY") {
318 $message_id = @{@$res[0]}[0];
319 last;
320 }
322 # do not run into a endless loop
323 if ($i > 50) { last; }
324 usleep(100000);
325 }
327 # client is alive
328 # -> new_foreign_client will be ignored
329 if (defined $message_id) {
330 &main::daemon_log("$session_id ERROR: At new_foreign_clients: host '$hostname' is reported as a new foreign client, ".
331 "but the host is still registered at this server. So, the new_foreign_client-msg will be ignored: $msg", 1);
332 }
333 }
336 # new client is not found in known_clients_db or
337 # new client is dead -> new_client-msg from foreign server is valid
338 # -> client will be deleted from known_clients_db
339 # -> inserted to foreign_clients_db
341 my $del_sql = "DELETE FROM $main::known_clients_tn WHERE (hostname='$hostname')";
342 my $del_res = $main::known_clients_db->exec_statement($del_sql);
343 my $func_dic = { table => $main::foreign_clients_tn,
344 primkey => ['hostname'],
345 hostname => $hostname,
346 macaddress => $macaddress,
347 regserver => $source,
348 timestamp => &get_time(),
349 };
350 my $res = $main::foreign_clients_db->add_dbentry($func_dic);
351 if (not $res == 0) {
352 &main::daemon_log("$session_id ERROR: server_server_com.pm: cannot add server to foreign_clients_db: $res", 1);
353 } else {
354 &main::daemon_log("$session_id INFO: server_server_com.pm: client '$hostname' successfully added to foreign_clients_db", 5);
355 }
357 return;
358 }
361 sub trigger_wake {
362 my ($msg, $msg_hash, $session_id) = @_ ;
364 foreach (@{$msg_hash->{'macaddress'}}){
365 &main::daemon_log("$session_id INFO: trigger wake for $_", 5);
366 my $host = $_;
367 my $ipaddr = '255.255.255.255';
368 my $port = getservbyname('discard', 'udp');
369 if (not defined $port) {
370 &main::daemon_log("$session_id ERROR: cannot determine port for wol $_: 'getservbyname('discard', 'udp')' failed!",1);
371 next;
372 }
374 my ($raddr, $them, $proto);
375 my ($hwaddr, $hwaddr_re, $pkt);
377 # get the hardware address (ethernet address)
378 $hwaddr_re = join(':', ('[0-9A-Fa-f]{1,2}') x 6);
379 if ($host =~ m/^$hwaddr_re$/) {
380 $hwaddr = $host;
381 } else {
382 &main::daemon_log("$session_id ERROR: trigger_wake called with non mac address", 1);
383 }
385 # Generate magic sequence
386 foreach (split /:/, $hwaddr) {
387 $pkt .= chr(hex($_));
388 }
389 $pkt = chr(0xFF) x 6 . $pkt x 16 . $main::wake_on_lan_passwd;
391 # Allocate socket and send packet
393 $raddr = gethostbyname($ipaddr);
394 if (not defined $raddr) {
395 &main::daemon_log("$session_id ERROR: cannot determine raddr for wol $_: 'gethostbyname($ipaddr)' failed!", 1);
396 next;
397 }
399 $them = pack_sockaddr_in($port, $raddr);
400 $proto = getprotobyname('udp');
402 socket(S, AF_INET, SOCK_DGRAM, $proto) or die "socket : $!";
403 setsockopt(S, SOL_SOCKET, SO_BROADCAST, 1) or die "setsockopt : $!";
404 send(S, $pkt, 0, $them) or die "send : $!";
405 close S;
406 }
408 return;
409 }
412 sub confirm_usr_msg {
413 my ($msg, $msg_hash, $session_id) = @_ ;
414 &clMessages::confirm_usr_msg($msg, $msg_hash, $session_id);
415 return;
416 }
419 1;