1 #!/usr/bin/perl
2 #===============================================================================
3 #
4 # FILE: gosa-server
5 #
6 # USAGE: gosa-si-client
7 #
8 # DESCRIPTION:
9 #
10 # OPTIONS: ---
11 # REQUIREMENTS: libnetaddr-ip-perl
12 # BUGS: ---
13 # NOTES:
14 # AUTHOR: (Andreas Rettenberger), <rettenberger@gonicus.de>
15 # COMPANY:
16 # VERSION: 1.0
17 # CREATED: 12.09.2007 08:54:41 CEST
18 # REVISION: ---
19 #===============================================================================
21 my $client_version = '$HeadURL$:$Rev$';
23 use strict;
24 use warnings;
25 use Getopt::Long;
26 use Config::IniFiles;
27 use POSIX;
28 use Time::HiRes qw( gettimeofday );
30 use POE qw(Component::Server::TCP Wheel::FollowTail Wheel::Run);
31 use IO::Socket::INET;
32 use NetAddr::IP;
33 use Crypt::Rijndael;
34 use GOSA::GosaSupportDaemon;
35 use Digest::MD5 qw(md5_hex md5 md5_base64);
36 use MIME::Base64;
37 use XML::Simple;
38 use File::Basename;
39 use File::Spec;
40 use Fcntl;
42 # Workaround: need pure perl to make it work with UTF-8 :-(
43 $XML::Simple::PREFERRED_PARSER= "XML::SAX::PurePerl";
45 my $client_headURL;
46 my $client_revision;
47 my $client_status;
48 my $event_dir = "/usr/lib/gosa-si/client/events";
49 use lib "/usr/lib/gosa-si/client/events";
51 my (%cfg_defaults, $foreground, $verbose, $pid_file, $procid, $pid, $log_file, $fai_logpath);
52 my ($server_ip, $server_port, $server_timeout, $server_domain, $server_key_lifetime);
53 my ($client_port, $ldap_enabled, $ldap_config, $pam_config, $nss_config);
54 my ($root_uid, $adm_gid);
55 my $xml;
56 my $event_hash;
57 my $default_server_key;
58 my @servers;
59 my $gotoHardwareChecksum;
60 my $system_com;
61 $verbose= 1;
63 # globalise variables which are used in imported events
64 our $global_kernel;
65 our $cfg_file;
66 our $opts_file;
67 our $server_address;
68 our $client_address;
69 our $client_ip;
70 our $client_mac_address;
71 our $client_dnsname;
72 our $client_force_hostname;
73 our $server_key;
74 our $terminal_server_hash;
76 # default variables
77 our $REGISTERED = 0;
79 # path to fifo for non-gosa-si-client messages to gosa-si-server
80 my $fai_com_fifo = "/var/run/gosa-si-client.socket";
81 my $system_com_fifo = "/var/run/gosa-si-client-system-com.socket";
82 my %files_to_watch = (fai_fifo => $fai_com_fifo, system_fifo => $system_com_fifo);
84 # in function register_at_gosa_si_server, after which period of seconds a new registration should be tried if a registration was
85 # not successful until now
86 my $delay_set_time = 10;
87 our $prg= basename($0);
89 # all n seconds the client reports logged_in users to gosa-si-server
90 my $trigger_logged_in_users_report_delay = 600;
92 # all n seconds the client reports messages seen by user
93 my $trigger_seen_messages_delay = 30;
95 # directory where all log files from installation are stored
96 my $fai_log_dir = "/var/log/fai";
98 %cfg_defaults = (
99 "general" =>
100 {"log-file" => [\$log_file, "/var/run/".$prg.".log"],
101 "pid-file" => [\$pid_file, "/var/run/".$prg.".pid"],
102 "opts-file" => [\$opts_file, "/var/run/".$prg.".opts"],
103 },
104 "client" =>
105 {"port" => [\$client_port, "20083"],
106 "ip" => [\$client_ip, "0.0.0.0"],
107 "mac-address" => [\$client_mac_address, "00:00:00:00:00:00"],
108 "server-domain" => [\$server_domain, ""],
109 "ldap" => [\$ldap_enabled, 1],
110 "ldap-config" => [\$ldap_config, "/etc/ldap/ldap.conf"],
111 "pam-config" => [\$pam_config, "/etc/pam_ldap.conf"],
112 "nss-config" => [\$nss_config, "/etc/libnss-ldap.conf"],
113 "fai-logpath" => [\$fai_logpath, "/var/log/fai/fai.log"],
114 "force-hostname" => [\$client_force_hostname, "false"],
115 "system-com" => [\$system_com, "disabled"],
116 },
117 "server" => {
118 "ip" => [\$server_ip, "127.0.0.1"],
119 "port" => [\$server_port, "20081"],
120 "key" => [\$server_key, ""],
121 "timeout" => [\$server_timeout, 10],
122 "key-lifetime" => [\$server_key_lifetime, 600],
123 },
125 );
128 #=== FUNCTIONS = functions =====================================================
130 sub usage {
131 print STDERR << "EOF" ;
132 usage: $prg [-hvf] [-c config]
134 -h : this (help) message
135 -c <file> : config file
136 -f : foreground, process will not be forked to background
137 -v : be verbose (multiple to increase verbosity)
139 EOF
140 print "\n" ;
141 }
143 #=== FUNCTION ================================================================
144 # NAME: check_cmdline_param
145 # PARAMETERS:
146 # RETURNS:
147 # DESCRIPTION:
148 #===============================================================================
149 sub check_cmdline_param () {
150 my $err_config;
151 my $err_counter = 0;
152 if(not defined($cfg_file)) {
153 $cfg_file = "/etc/gosa-si/client.conf";
154 if(! -r $cfg_file) {
155 $err_config = "please specify a config file";
156 $err_counter += 1;
157 }
158 }
159 if( $err_counter > 0 ) {
160 &usage( "", 1 );
161 if( defined( $err_config)) { print STDERR "$err_config\n"}
162 print STDERR "\n";
163 exit( -1 );
164 }
165 }
168 #=== FUNCTION ================================================================
169 # NAME: check_pid
170 # PARAMETERS:
171 # RETURNS:
172 # DESCRIPTION:
173 #===============================================================================
174 sub check_pid {
175 $pid = -1;
176 # Check, if we are already running
177 if( open(LOCK_FILE, "<$pid_file") ) {
178 $pid = <LOCK_FILE>;
179 if( defined $pid ) {
180 chomp( $pid );
181 if( -f "/proc/$pid/stat" ) {
182 my($stat) = `cat /proc/$pid/stat` =~ m/$pid \((.+)\).*/;
183 if( $0 eq $stat ) {
184 close( LOCK_FILE );
185 exit -1;
186 }
187 }
188 }
189 close( LOCK_FILE );
190 unlink( $pid_file );
191 }
193 # create a syslog msg if it is not to possible to open PID file
194 if (not sysopen(LOCK_FILE, $pid_file, O_WRONLY|O_CREAT|O_EXCL, 0644)) {
195 my($msg) = "Couldn't obtain lockfile '$pid_file' ";
196 if (open(LOCK_FILE, '<', $pid_file)
197 && ($pid = <LOCK_FILE>))
198 {
199 chomp($pid);
200 $msg .= "(PID $pid)\n";
201 } else {
202 $msg .= "(unable to read PID)\n";
203 }
204 if( ! ($foreground) ) {
205 openlog( $0, "cons,pid", "daemon" );
206 syslog( "warning", $msg );
207 closelog();
208 }
209 else {
210 print( STDERR " $msg " );
211 }
212 exit( -1 );
213 }
214 }
217 sub sig_int_handler {
218 my ($signal) = @_;
220 daemon_log("shutting down gosa-si-client", 1);
221 system("kill `ps -C gosa-si-client -o pid=`");
222 }
223 $SIG{INT} = \&sig_int_handler;
226 #=== FUNCTION ================================================================
227 # NAME: logging
228 # PARAMETERS: level - string - default 'info'
229 # msg - string -
230 # facility - string - default 'LOG_DAEMON'
231 # RETURNS:
232 # DESCRIPTION:
233 #===============================================================================
234 sub daemon_log {
235 # log into log_file
236 my( $msg, $level ) = @_;
237 if(not defined $msg) { return }
238 if(not defined $level) { $level = 1 }
239 if(defined $log_file){
240 my $open_log_fh = sysopen(LOG_HANDLE, $log_file, O_WRONLY | O_CREAT | O_APPEND , 0440);
241 if(not $open_log_fh) {
242 print STDERR "cannot open $log_file: $!";
243 return;
244 }
245 # check owner and group of log_file and update settings if necessary
246 my ($dev, $ino, $mode, $nlink, $uid, $gid, $rdev, $size, $atime, $mtime, $ctime, $blksize, $blocks) = stat($log_file);
247 if((not $uid eq $root_uid) || (not $gid eq $adm_gid)) {
248 chown($root_uid, $adm_gid, $log_file);
249 }
251 chomp($msg);
252 if($level <= $verbose){
253 my ($seconds, $minutes, $hours, $monthday, $month,
254 $year, $weekday, $yearday, $sommertime) = localtime(time);
255 $hours = $hours < 10 ? $hours = "0".$hours : $hours;
256 $minutes = $minutes < 10 ? $minutes = "0".$minutes : $minutes;
257 $seconds = $seconds < 10 ? $seconds = "0".$seconds : $seconds;
258 my @monthnames = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
259 $month = $monthnames[$month];
260 $monthday = $monthday < 10 ? $monthday = "0".$monthday : $monthday;
261 $year+=1900;
263 my $log_msg = "$month $monthday $hours:$minutes:$seconds $prg $msg\n";
264 print LOG_HANDLE $log_msg;
265 if( $foreground ) {
266 print STDERR $log_msg;
267 }
268 }
269 close( LOG_HANDLE );
270 }
271 }
274 #=== FUNCTION ================================================================
275 # NAME: get_mac
276 # PARAMETERS: interface name (i.e. eth0)
277 # RETURNS: (mac address)
278 # DESCRIPTION: Uses ioctl to get mac address directly from system.
279 #===============================================================================
280 sub get_mac {
281 my $ifreq= shift;
282 my $result;
283 if ($ifreq && length($ifreq) > 0) {
284 if($ifreq eq "all") {
285 if(defined($server_ip)) {
286 $result = &get_local_mac_for_remote_ip($server_ip);
287 }
288 elsif ($client_mac_address && length($client_mac_address) > 0 && !($client_mac_address eq "00:00:00:00:00:00")){
289 $result = &client_mac_address;
290 }
291 else {
292 $result = "00:00:00:00:00:00";
293 }
294 } else {
295 my $SIOCGIFHWADDR= 0x8927; # man 2 ioctl_list
297 # A configured MAC Address should always override a guessed value
298 if ($client_mac_address and length($client_mac_address) > 0 and not($client_mac_address eq "00:00:00:00:00:00")) {
299 $result= $client_mac_address;
300 }
301 else {
302 socket SOCKET, PF_INET, SOCK_DGRAM, getprotobyname('ip')
303 or die "socket: $!";
305 if(ioctl SOCKET, $SIOCGIFHWADDR, $ifreq) {
306 my ($if, $mac)= unpack 'h36 H12', $ifreq;
308 if (length($mac) > 0) {
309 $mac=~ m/^([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])$/;
310 $mac= sprintf("%s:%s:%s:%s:%s:%s", $1, $2, $3, $4, $5, $6);
311 $result = $mac;
312 }
313 }
314 }
315 }
316 }
317 return $result;
318 }
322 #=== FUNCTION ================================================================
323 # NAME: get_local_mac_for_remote_ip
324 # PARAMETERS: none (takes server_ip from global variable)
325 # RETURNS: (ip address from interface that is used for communication)
326 # DESCRIPTION: Uses ioctl to get routing table from system, checks which entry
327 # matches (defaultroute last).
328 #===============================================================================
329 sub get_local_mac_for_remote_ip {
330 my $server_ip= shift;
331 my $result= "00:00:00:00:00:00";
333 if($server_ip =~ /^[a-z][a-z0-9\.]+/i) {
334 my $ip_address = inet_ntoa(scalar gethostbyname($server_ip));
335 if(defined($ip_address) && $ip_address =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}/) {
336 # Write ip address to $server_ip variable
337 $server_ip = $ip_address;
338 }
339 }
341 if($server_ip =~ /^(\d\d?\d?\.){3}\d\d?\d?$/) {
342 my $PROC_NET_ROUTE= ('/proc/net/route');
344 open(PROC_NET_ROUTE, "<$PROC_NET_ROUTE")
345 or die "Could not open $PROC_NET_ROUTE";
347 my @ifs = <PROC_NET_ROUTE>;
349 close(PROC_NET_ROUTE);
351 # Eat header line
352 shift @ifs;
353 chomp @ifs;
354 foreach my $line(@ifs) {
355 my ($Iface,$Destination,$Gateway,$Flags,$RefCnt,$Use,$Metric,$Mask,$MTU,$Window,$IRTT)=split(/\s/, $line);
356 my $destination;
357 my $mask;
358 my ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Destination);
359 $destination= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
360 ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Mask);
361 $mask= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
362 if(new NetAddr::IP($server_ip)->within(new NetAddr::IP($destination, $mask))) {
363 # destination matches route, save mac and exit
364 $result= &get_mac($Iface);
365 last;
366 }
367 }
368 } else {
369 daemon_log("get_local_mac_for_remote_ip was called with a non-ip parameter: $server_ip", 1);
370 }
371 return $result;
372 }
375 sub generate_hw_digest {
376 my $hw_data;
377 foreach my $line (split /\n/, `cat /proc/bus/pci/devices`) {
378 $hw_data.= sprintf "%s", $line =~ /[^\s]+\s([^\s]+)\s.*/;
379 }
380 # linux-vserver has no /proc/bus/pci/devices
381 if ( !$hw_data ) {
382 foreach my $line (split /\n/, `ifconfig | grep HWaddr`) {
383 $hw_data.= sprintf "%s", $line =~ /[^\s]+\s([^\s]+)\s.*/;
384 }
385 }
386 return(md5_base64($hw_data));
387 }
390 sub create_ciphering {
391 my ($passwd) = @_;
392 if((!defined($passwd)) || length($passwd)==0) {
393 $passwd = "";
394 }
395 $passwd = substr(md5_hex("$passwd") x 32, 0, 32);
396 my $iv = substr(md5_hex('GONICUS GmbH'),0, 16);
397 my $my_cipher = Crypt::Rijndael->new($passwd , Crypt::Rijndael::MODE_CBC());
398 $my_cipher->set_iv($iv);
399 return $my_cipher;
400 }
403 sub encrypt_msg {
404 my ($msg, $key) = @_;
405 my $my_cipher = &create_ciphering($key);
406 my $len;
407 {
408 use bytes;
409 $len= 16-length($msg)%16;
410 }
411 $msg = "\0"x($len).$msg;
412 $msg = $my_cipher->encrypt($msg);
413 chomp($msg = &encode_base64($msg));
414 # there are no newlines allowed inside msg
415 $msg=~ s/\n//g;
416 return $msg;
417 }
420 sub decrypt_msg {
422 my ($msg, $key) = @_ ;
423 $msg = &decode_base64($msg);
424 my $my_cipher = &create_ciphering($key);
425 $msg = $my_cipher->decrypt($msg);
426 $msg =~ s/\0*//g;
427 return $msg;
428 }
431 #=== FUNCTION ================================================================
432 # NAME: send_msg_hash_to_target
433 # PARAMETERS: msg_hash - hash - xml_hash created with function create_xml_hash
434 # PeerAddr string - socket address to send msg
435 # PeerPort string - socket port, if not included in socket address
436 # RETURNS: nothing
437 # DESCRIPTION: ????
438 #===============================================================================
439 sub send_msg_hash_to_target {
440 my ($msg_hash, $address, $encrypt_key) = @_ ;
441 my $msg = &create_xml_string($msg_hash);
442 my $header = @{$msg_hash->{'header'}}[0];
443 my $error = &send_msg_to_target($msg, $address, $encrypt_key, $header);
445 return $error;
446 }
449 sub send_msg_to_target {
450 my ($msg, $address, $encrypt_key, $msg_header) = @_ ;
451 my $error = 0;
453 if( $msg_header ) { $msg_header = "'$msg_header'-"; }
454 else { $msg_header = ""; }
456 # Memorize own source address
457 $msg =~ /<source>(\S+)<\/source>/;
458 my $own_source_address = $1;
460 # encrypt xml msg
461 my $crypted_msg = &encrypt_msg($msg, $encrypt_key);
463 # opensocket
464 my $socket = &open_socket($address);
465 if( !$socket ) {
466 daemon_log("WARNING: cannot send ".$msg_header."msg to '$address', host not reachable", 3);
467 if ($REGISTERED == 1) {
468 $REGISTERED = 0; # if server is not available, cause reregistering
469 daemon_log("INFO: cause reregistering at gosa-si-server", 5);
470 $global_kernel->yield('register_at_gosa_si_server');
472 }
473 $error++;
474 }
476 # send xml msg
477 if( $error == 0 ) {
478 print $socket $crypted_msg.";$own_source_address\n";
479 daemon_log("INFO: send ".$msg_header."msg to $address", 5);
480 daemon_log("DEBUG: message:\n$msg", 9);
481 }
483 # close socket in any case
484 if( $socket ) {
485 close $socket;
486 }
488 return $error;
489 }
492 sub write_to_file {
493 my ($string, $file) = @_;
494 my $error = 0;
496 if( not defined $file || not -f $file ) {
497 &main::daemon_log("ERROR: $prg: check '-f file' failed: $file", 1);
498 $error++;
499 }
500 if( not defined $string || 0 == length($string)) {
501 &main::daemon_log("ERROR: $prg: empty string to write to file '$file'", 1);
502 $error++;
503 }
505 if( $error == 0 ) {
507 chomp($string);
509 if (open(FILE, ">> $file")){
510 print FILE $string."\n";
511 close(FILE);
512 }
513 }
515 return;
516 }
519 sub open_socket {
520 my ($PeerAddr, $PeerPort) = @_ ;
521 if(defined($PeerPort)){
522 $PeerAddr = $PeerAddr.":".$PeerPort;
523 }
524 my $socket;
525 $socket = new IO::Socket::INET(PeerAddr => $PeerAddr,
526 Porto => "tcp",
527 Type => SOCK_STREAM,
528 Timeout => 5,
529 );
530 if(not defined $socket) {
531 return;
532 }
533 &daemon_log("DEBUG: open_socket: $PeerAddr", 7);
534 return $socket;
535 }
538 #=== FUNCTION ================================================================
539 # NAME: register_at_server
540 # PARAMETERS:
541 # RETURNS:
542 # DESCRIPTION:
543 #===============================================================================
544 sub register_at_gosa_si_server {
545 my ($kernel) = $_[KERNEL];
546 my $try_to_register = 0;
548 if ($REGISTERED) {
549 # Client is already registered, clear all other registration events
550 $kernel->delay('register_at_gosa_si_server');
551 } else {
552 # Client is not registered, start registration process
553 # Clear all other events and wait till registration was successful
554 $kernel->delay('register_at_gosa_si_server');
555 $kernel->delay('trigger_new_key');
557 # Create new passwd and ciphering object for client-server communication
558 $server_key = &create_passwd();
560 my $events = join( ",", keys %{$event_hash} );
561 while(1) {
562 $try_to_register++;
564 # after one complete round through all server, stop trying to register
565 if( $try_to_register > @servers ) { last; }
567 # fetch first gosa-si-server from @servers
568 # append shifted gosa-si-server at the end of @servers, so looking for servers never stop if
569 # a registration never occured
570 my $server = shift(@servers);
571 push( @servers, $server );
573 # Check if $server is a valid server address
574 if(!(defined($server) && $server =~ m/^[0-9\.]*?:.*$/)) {
575 &main::daemon_log("ERROR: Server with address '".defined($server)?$server:""."' is invalid!", 1);
576 if (length(@servers) == 1) {
577 &main::daemon_log("ERROR: No valid servers found!", 1);
578 exit(1);
579 }
580 }
582 # Check if our ip is resolvable - if not: don't try to register
583 my $ip= &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
584 my $dnsname= gethostbyaddr(inet_aton($ip), AF_INET);
585 if(!defined($dnsname)) {
586 if( defined($client_force_hostname) && $client_force_hostname eq "true") {
587 $dnsname = `hostname`;
588 } else {
589 &write_to_file("goto-error-dns:$ip", $fai_logpath);
590 &main::daemon_log("ERROR: ip is not resolvable, no registration possible. Write 'goto-error-dns:$ip' to $fai_logpath", 1);
591 exit(1);
592 }
593 }
595 # create registration msg
596 my $local_ip = &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
597 my $local_mac = &get_local_mac_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
598 my $register_hash = &create_xml_hash("here_i_am", $local_ip.":".$client_port, $server);
599 &add_content2xml_hash($register_hash, "new_passwd", $server_key);
600 &add_content2xml_hash($register_hash, "mac_address", $local_mac);
601 &add_content2xml_hash($register_hash, "events", $events);
602 &add_content2xml_hash($register_hash, "client_status", $client_status);
603 &add_content2xml_hash($register_hash, "client_revision", $client_revision);
604 &add_content2xml_hash($register_hash, "gotoHardwareChecksum", $gotoHardwareChecksum);
605 &add_content2xml_hash($register_hash, "key_lifetime", $server_key_lifetime);
607 # Add $HOSTNAME from ENV if force-hostname is set
608 if( defined($client_force_hostname) && $client_force_hostname eq "true") {
609 if(defined($ENV{HOSTNAME}) && length($ENV{HOSTNAME}) >0 ) {
610 &add_content2xml_hash($register_hash, "force-hostname", $ENV{HOSTNAME});
611 } else {
612 &main::daemon_log("force-hostname was set to true, but no \$HOSTNAME was found in Environment!",0);
613 }
614 }
616 # send xml hash to server with general server passwd
617 my $res = &send_msg_hash_to_target($register_hash, $server, $default_server_key);
619 # if delivery of registration msg succeed
620 if($res eq "0") {
621 # reset try_to_register
622 $try_to_register = 0;
624 # Set fixed client address and mac address
625 $client_ip= &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
626 $client_address= "$client_ip:$client_port";
627 $client_mac_address = $local_mac;
628 $client_dnsname = $dnsname;
629 last;
631 # delivery of registration msg failed
632 } else {
633 # wait 1 sec until trying to register again
634 sleep(1);
635 next;
636 }
638 } # end of while
640 if ( $try_to_register >= @servers ) {
641 # One circle through all servers finished and no registration succeed
642 &write_to_file("gosa-si-no-server-available", $fai_logpath);
643 } else {
644 # Delivery of registraion msg succeed, waiting for server response
645 daemon_log("INFO: waiting for msg 'register_at_gosa_si_server'",5);
646 # Clear old settings and set it again
647 $kernel->delay('trigger_new_key');
648 $kernel->delay_set('trigger_new_key', $server_key_lifetime);
649 }
651 # Set waiting time for 'register_at_gosa_si_server'-event
652 $kernel->delay_set('register_at_gosa_si_server', $delay_set_time);
653 }
654 return;
655 }
658 sub check_key_and_xml_validity {
659 my ($crypted_msg, $module_key) = @_;
661 my $msg;
662 my $msg_hash;
663 eval{
664 $msg = &decrypt_msg($crypted_msg, $module_key);
665 &main::daemon_log("decrypted_msg: \n$msg", 9);
667 $msg_hash = $xml->XMLin($msg, ForceArray=>1);
669 ##############
670 # check header
671 my $header_l = $msg_hash->{'header'};
672 if( 1 != @{$header_l} ) {
673 die 'no or more headers specified';
674 }
675 my $header = @{$header_l}[0];
676 if( 0 == length $header) {
677 die 'header has length 0';
678 }
680 ##############
681 # check source
682 my $source_l = $msg_hash->{'source'};
683 if( 1 != @{$source_l} ) {
684 die 'no or more than 1 sources specified';
685 }
686 my $source = @{$source_l}[0];
687 if( 0 == length $source) {
688 die 'source has length 0';
689 }
690 unless( $source =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ) {
691 die "source '$source' is neither a complete ip-address with port nor 'GOSA'";
692 }
694 ##############
695 # check target
696 my $target_l = $msg_hash->{'target'};
697 if( 1 != @{$target_l} ) {
698 die 'no or more than 1 targets specified ';
699 }
700 my $target = @{$target_l}[0];
701 if( 0 == length $target) {
702 die 'target has length 0 ';
703 }
704 unless( $target =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ){
705 die "source is neither a complete ip-address with port nor 'GOSA'";
706 }
707 };
708 if($@) {
709 &main::daemon_log("WARNING: do not understand the message or msg is not gosa-si envelope conform:", 5);
710 &main::daemon_log("$@", 8);
711 $msg = undef;
712 $msg_hash = undef;
713 }
715 return ($msg, $msg_hash);
716 }
719 sub check_outgoing_xml_validity {
720 my ($msg) = @_;
722 my $msg_hash;
723 eval{
724 $msg_hash = $xml->XMLin($msg, ForceArray=>1);
726 ##############
727 # check header
728 my $header_l = $msg_hash->{'header'};
729 if( 1 != @{$header_l} ) {
730 die 'no or more than one headers specified';
731 }
732 my $header = @{$header_l}[0];
733 if( 0 == length $header) {
734 die 'header has length 0';
735 }
737 ##############
738 # check source
739 my $source_l = $msg_hash->{'source'};
740 if( 1 != @{$source_l} ) {
741 die 'no or more than 1 sources specified';
742 }
743 my $source = @{$source_l}[0];
744 if( 0 == length $source) {
745 die 'source has length 0';
746 }
747 unless( $source =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ||
748 $source =~ /^GOSA$/i ) {
749 die "source '$source' is neither a complete ip-address with port";
750 }
752 ##############
753 # check target
754 my $target_l = $msg_hash->{'target'};
755 if( 1 != @{$target_l} ) {
756 die "no or more than one targets specified";
757 }
758 foreach my $target (@$target_l) {
759 if( 0 == length $target) {
760 die "target has length 0";
761 }
762 unless( $target =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ) {
763 die "target '$target' is not a complete ip-address with port or a valid target name";
764 }
765 }
766 };
767 if($@) {
768 daemon_log("WARNING: outgoing msg is not gosa-si envelope conform", 5);
769 daemon_log("$@ $msg", 8);
770 $msg_hash = undef;
771 }
772 return ($msg_hash);
773 }
776 sub trigger_new_key {
777 my ($kernel) = $_[KERNEL] ;
779 my $msg = "<xml><header>new_key</header><source>$client_address</source><target>$client_address</target></xml>";
780 &send_msg_to_target($msg, $client_address, $server_key, 'new_key');
782 $kernel->delay_set('trigger_new_key', $server_key_lifetime);
783 }
786 sub trigger_logged_in_users_report {
787 my ($kernel) = $_[KERNEL] ;
789 # just do if client is registered already
790 if( $REGISTERED ) {
791 my $result = qx(/usr/bin/users);
792 my @logged_in_user_list;
793 if( defined $result ) {
794 chomp($result);
795 @logged_in_user_list = split(/\s/, $result);
796 }
798 system("echo 'CURRENTLY_LOGGED_IN ".join(" ", @logged_in_user_list)."' > /var/run/gosa-si-client.socket");
799 $kernel->delay_set('trigger_logged_in_users_report', $trigger_logged_in_users_report_delay);
800 } else {
801 # try it in 10 sec again
802 $kernel->delay_set('trigger_logged_in_users_report', 10);
803 }
804 }
806 sub trigger_set_terminal_server
807 {
808 # Function is defined in load_reporter.pm
809 if (exists $event_hash->{set_terminal_server})
810 {
811 no strict 'refs';
812 &{$event_hash->{set_terminal_server}."::set_terminal_server"};
813 }
814 else
815 {
816 &daemon_log("0 ERROR: load_reporter.pm needs function set_terminal_server to write terminal server load information to client. Processing aborted!", 1);
817 }
818 return;
819 }
821 sub trigger_seen_messages {
822 my ($kernel) = $_[KERNEL] ;
824 # Select all files under /tmp with prefix 'goto_notify'
825 my $goto_dir = "/tmp";
826 opendir(DIR, $goto_dir);
827 my @goto_files = grep { /.+\.goto_notify$/ && -f "$goto_dir/$_" } readdir(DIR);
828 closedir DIR;
830 # Check if file has 'seen' tag
831 foreach my $goto_file (@goto_files) {
832 open(FILE, "$goto_dir/$goto_file");
833 my @lines = <FILE>;
834 close FILE;
836 my $source;
837 my $target;
838 my $usr;
839 my $subject;
840 my $message;
841 my $seen = 0;
842 chomp(@lines);
843 foreach my $line (@lines) {
844 if ($line =~ /^source:([\S\s]*)$/) {
845 $source = $1
846 }
847 if ($line =~ /^target:([\S\s]*)$/) {
848 $target = $1;
849 }
850 if ($line =~ /^usr:([\S\s]*)$/) {
851 $usr = $1;
852 }
853 if ($line =~ /^subject:([\S\s]*)$/) {
854 $subject = $1;
855 }
856 if ($line =~ /^message:([\S\s]*)$/) {
857 $message = $1;
858 }
859 if ($line =~ /^seen$/) {
860 $seen++;
861 }
862 }
864 # Send 'confirm_usr_msg' back to msg-hosting server
865 if ($seen) {
866 my %data = ('usr'=>$usr, 'subject'=>$subject, 'message'=>$message);
867 my $confirm_msg = &build_msg("confirm_usr_msg", $target, $source, \%data);
868 my $send_error = &send_msg_to_target($confirm_msg, $server_address, $server_key);
870 # Delete file
871 if (not $send_error) {
872 system("rm $goto_dir/$goto_file");
873 }
874 }
875 }
877 $kernel->delay_set('trigger_seen_messages', $trigger_seen_messages_delay);
879 return;
880 }
883 sub generic_file_error {
884 my ( $heap, $operation, $errno, $error_string, $wheel_id ) =
885 @_[ HEAP, ARG0, ARG1, ARG2, ARG3 ];
887 my $service = $heap->{services}->{$wheel_id};
888 daemon_log("ERROR: '$service' watcher $operation error $errno: $error_string", 1);
889 daemon_log("ERROR: shutting down '$service' file watcher", 1);
891 delete $heap->{services}->{$wheel_id};
892 delete $heap->{watchers}->{$wheel_id};
893 return;
894 }
897 sub fai_fifo_got_record {
898 my $file_record = $_[ARG0];
899 my $header;
900 my $content = "";
901 daemon_log("DEBUG: fifo got record: $file_record", 7);
903 $file_record =~ /^(\S+)[ ]?([\s\S]+)?$/;
904 if( defined $1 ) {
905 $header = $1;
906 } else {
907 return;
908 }
910 if( defined $2 ) {
911 $content = $2;
912 }
914 my $clmsg_hash = &create_xml_hash("CLMSG_$header", $client_address, $server_address, $content);
915 &add_content2xml_hash($clmsg_hash, "macaddress", $client_mac_address);
916 my $utc_ts = &main::get_utc_time();
917 &add_content2xml_hash($clmsg_hash, "timestamp", $utc_ts);
918 my $clmsg = &create_xml_string($clmsg_hash);
919 &send_msg_to_target($clmsg, $server_address, $server_key, "CLMSG_$header");
921 # if installation finished, save all log files
922 if ($file_record eq "TASKBEGIN finish") {
923 &save_fai_log($fai_log_dir);
924 }
926 return;
927 }
930 sub system_fifo_got_record {
931 my ($kernel, $socket_com_record) = @_[KERNEL, ARG0];
932 $socket_com_record =~ /^(\S+)\s?([\s\S]*)$/;
933 my $function = $1;
934 my $content = $2;
936 if( exists $event_hash->{$function} )
937 {
938 # a event exists with the header as name
939 daemon_log("INFO: found event '$function' at event-module '".$event_hash->{$function}."'", 5);
940 no strict 'refs';
941 my $answer = &{$event_hash->{$function}."::$function"}($content, $kernel);
942 &post_processing_and_sending($answer)
943 }
944 else
945 {
946 daemon_log("ERROR: Got input '$socket_com_record' from socket '$system_com_fifo'", 1);
947 daemon_log("ERROR: No event '$function' found in event modules under '$event_dir'.", 1);
948 }
950 # # Sanity check of fifo record
951 #
952 # # Create record message
953 # my $lr_msg_hash = &create_xml_hash("load_report", $client_address, $server_address, $file_record);
954 # &add_content2xml_hash($lr_msg_hash, "macaddress", $client_mac_address);
955 # my $utc_ts = &main::get_utc_time();
956 # &add_content2xml_hash($lr_msg_hash, "timestamp", $utc_ts);
957 # my $lr_msg = &create_xml_string($lr_msg_hash);
958 #
959 # # Report message to si-server
960 # &send_msg_to_target($lr_msg, $server_address, $server_key, "load_report");
962 return;
963 }
966 sub save_fai_log {
967 my ($fai_log_dir) = @_ ;
968 my $FAI_DIR;
970 # Directory for log files after a softupdate
971 my $log_dir = File::Spec->catdir($fai_log_dir, "localhost/last");
973 if (not -d $log_dir) {
974 # Directory for log files after a new installation
975 $log_dir = "/tmp/fai";
976 if (not -d $log_dir) {
977 daemon_log("ERROR: cannot open directory $log_dir", 1);
978 return;
979 }
980 }
982 opendir($FAI_DIR, "$log_dir");
983 my @log_files = readdir($FAI_DIR);
984 closedir($FAI_DIR);
986 my @log_list;
987 foreach my $log_file (@log_files) {
988 if( $log_file eq "." || $log_file eq ".." ) { next; }
990 my $log = "log_file:$log_file:";
991 $log_file = File::Spec->catfile( $log_dir, $log_file );
993 if (not -f $log_file) {
994 daemon_log("ERROR: cannot read $log_file", 1);
995 next;
996 }
998 open(FILE, "<$log_file");
999 my @lines = <FILE> ;
1000 close (FILE);
1001 my $log_string = join("", @lines);
1002 $log .= &encode_base64($log_string);
1003 push(@log_list, $log);
1004 }
1006 my $all_log_string = join("\n", @log_list);
1007 my $msg_hash = &create_xml_hash("CLMSG_save_fai_log", $client_address, $server_address, $all_log_string);
1008 &add_content2xml_hash($msg_hash, "macaddress", $client_mac_address);
1009 my $msg = &create_xml_string($msg_hash);
1010 &send_msg_to_target($msg, $server_address, $server_key, "CLMSG_save_fai_log");
1012 }
1015 sub sig_handler {
1016 my ($kernel, $signal) = @_[KERNEL, ARG0] ;
1017 daemon_log("0 INFO got signal '$signal'", 1);
1018 $kernel->sig_handled();
1019 return;
1020 }
1023 sub _start {
1024 my ($kernel, $heap) = @_[KERNEL, HEAP];
1025 $kernel->alias_set('client_session');
1026 $global_kernel = $kernel; # this is used to throw events at each point of the skript
1028 $kernel->sig(USR1 => "sig_handler");
1030 # force a registration at a gosa-si-server
1031 $kernel->yield('register_at_gosa_si_server');
1033 # install all file watcher defined
1034 while( my($name, $file) = each %files_to_watch ) {
1035 my $watcher = POE::Wheel::FollowTail->new(
1036 Filename => $file,
1037 InputEvent => $name."_record",
1038 ErrorEvent => "file_error",
1039 );
1040 $heap->{services}->{ $watcher->ID } = $name;
1041 $heap->{watchers}->{ $watcher->ID } = $watcher;
1042 }
1043 $kernel->yield('trigger_logged_in_users_report');
1044 $kernel->yield('trigger_seen_messages');
1045 }
1048 sub _default {
1049 daemon_log("ERROR: can not handle incoming msg with header '$_[ARG0]'", 1);
1050 return;
1051 }
1054 sub server_input {
1055 my ($kernel, $heap, $input, $wheel) = @_[KERNEL, HEAP, ARG0, ARG1];
1056 my $remote_ip = $heap->{'remote_ip'},
1057 my $error = 0;
1058 my $answer;
1060 daemon_log("INFO: Incoming msg from '$remote_ip'", 5);
1061 daemon_log("DEBUG: Incoming msg:\n$input\n", 9);
1063 # Cut of ip and port from msgs tail
1064 my ($encrypted_msg, $msg_source) = split(/;/, $input);
1066 my ($msg, $msg_hash) = &check_key_and_xml_validity($encrypted_msg, $server_key);
1067 if( (!$msg) || (!$msg_hash) ) {
1068 daemon_log("WARNING: Deciphering of incoming msg failed", 3);
1069 if($server_address =~ /$remote_ip/) {
1070 # Got a msg from gosa-si-server which can not be decrypted, the secrete is not up-to-date
1071 # cause a reregistering with a new secrete handshake
1072 daemon_log("ERROR: Message from gosa-si-server could not be understood, cause reregistering at server", 1);
1073 daemon_log("INFO: Set status of si-client to unregistered and throw new registering event", 5);
1074 $REGISTERED = 0;
1075 $kernel->post('client_session', 'register_at_gosa_si_server');
1076 }
1077 $error++;
1078 }
1081 ######################
1082 # process incoming msg
1083 if( $error == 0 ) {
1084 my $header = @{$msg_hash->{header}}[0];
1085 my $source = @{$msg_hash->{source}}[0];
1087 if( exists $event_hash->{$header} ) {
1089 # a event exists with the header as name
1090 daemon_log("INFO: found event '$header' at event-module '".$event_hash->{$header}."'", 5);
1091 no strict 'refs';
1092 $answer = &{$event_hash->{$header}."::$header"}($msg, $msg_hash);
1093 }
1094 else {
1095 daemon_log("WARNING: no event '$header' found in event modules under $event_dir", 3);
1096 }
1097 }
1099 ########
1100 # answer
1101 &post_processing_and_sending($answer);
1103 return;
1104 }
1106 sub post_processing_and_sending
1107 {
1108 my ($answer) = @_ ;
1110 # Do nothing if answer does not exists
1111 if (not defined $answer) { return; }
1113 # Check gosa-si envelope validity
1114 my $answer_hash = &check_outgoing_xml_validity($answer);
1116 # If answer is valid go ahead
1117 if( not defined $answer_hash ) { return; }
1119 # Sending
1120 $answer =~ /<header>(\S+)<\/header>/;
1121 &send_msg_to_target($answer, $server_address, $server_key, $1);
1123 return;
1124 }
1127 #==== MAIN = main ==============================================================
1128 # parse commandline options
1129 Getopt::Long::Configure( "bundling" );
1130 GetOptions("h|help" => \&usage,
1131 "c|config=s" => \$cfg_file,
1132 "f|foreground" => \$foreground,
1133 "v|verbose+" => \$verbose,
1134 );
1136 # read and set config parameters
1137 &check_cmdline_param ;
1138 &read_configfile($cfg_file, %cfg_defaults);
1139 &check_pid;
1142 # forward error messages to logfile
1143 if ( ! $foreground ) {
1144 open( STDIN, '+>/dev/null' );
1145 open( STDOUT, '+>&STDIN' );
1146 open( STDERR, '+>&STDIN' );
1147 }
1149 # Just fork, if we are not in foreground mode
1150 if( ! $foreground ) {
1151 chdir '/' or die "Can't chdir to /: $!";
1152 $pid = fork;
1153 setsid or die "Can't start a new session: $!";
1154 umask 0;
1155 } else {
1156 $pid = $$;
1157 }
1159 # Do something useful - put our PID into the pid_file
1160 if( 0 != $pid ) {
1161 open( LOCK_FILE, ">$pid_file" );
1162 print LOCK_FILE "$pid\n";
1163 close( LOCK_FILE );
1164 if( !$foreground ) {
1165 exit( 0 )
1166 };
1167 }
1169 # parse head url and revision from svn
1170 my $client_status_hash = { 'developmental'=>'revision', 'stable'=>'release'};
1171 $client_version =~ /^\$HeadURL: (\S+) \$:\$Rev: (\d+) \$$/;
1172 $client_headURL = defined $1 ? $1 : 'unknown' ;
1173 $client_revision = defined $2 ? $2 : 'unknown' ;
1174 if ($client_headURL =~ /\/tag\// ||
1175 $client_headURL =~ /\/branches\// ) {
1176 $client_status = "stable";
1177 } else {
1178 $client_status = "developmental" ;
1179 }
1181 # Determine root uid and adm gid, used for creating log files
1182 $root_uid = getpwnam('root');
1183 $adm_gid = getgrnam('adm');
1184 if(not defined $adm_gid){
1185 $adm_gid = getgrnam('root');
1186 }
1188 daemon_log(" ", 1);
1189 daemon_log("$prg started!", 1);
1190 daemon_log("INFO: status: $client_status", 1);
1191 daemon_log("INFO: ".$client_status_hash->{$client_status}.": $client_revision", 1);
1193 # delete old DBsqlite lock files
1194 system('rm -f /tmp/gosa_si_lock*gosa-si-client*');
1196 # detect ip and mac address and complete host address
1197 $client_address = $client_ip.":".$client_port;
1198 my $network_interface= &get_interface_for_ip($client_ip);
1199 $client_mac_address= &get_mac($network_interface);
1200 daemon_log("INFO: ip address detected: $client_ip", 1);
1201 daemon_log("INFO: gosa-si-client mac address detected: $client_mac_address", 1);
1204 # import events
1205 my ($error, $result, $tmp_hash) = &import_events($event_dir);
1206 while (my ($module, $mod_event_hash) = each %$tmp_hash) {
1207 while (my ($event_name, $nothing) = each %$mod_event_hash) {
1208 $event_hash->{$event_name} = $module;
1209 }
1210 }
1212 foreach my $log_line (@$result) {
1213 if ($log_line =~ / succeed: /) {
1214 &main::daemon_log("0 DEBUG: $log_line", 7);
1215 } else {
1216 &main::daemon_log("0 ERROR: $log_line", 1);
1217 }
1218 }
1221 # compute hardware checksum
1222 $gotoHardwareChecksum= &generate_hw_digest();
1223 daemon_log("INFO: gotoHardwareChecksum detected: $gotoHardwareChecksum", 1);
1226 # create socket for incoming xml messages
1227 POE::Component::Server::TCP->new(
1228 Alias => 'gosa-si-client',
1229 Port => $client_port,
1230 ClientInput => \&server_input,
1231 );
1232 daemon_log("INFO: start socket for incoming xml messages at port '$client_port' ", 1);
1235 # prepare variables
1236 if( inet_aton($server_ip) ){ $server_ip = inet_ntoa(inet_aton($server_ip)); }
1237 if (defined $server_ip && defined $server_port) {
1238 $server_address = $server_ip.":".$server_port;
1239 }
1240 $xml = new XML::Simple();
1241 $default_server_key = $server_key;
1243 # add gosa-si-server address from config file at first position of server list
1244 my $server_check_cfg = Config::IniFiles->new( -file => $cfg_file );
1245 my $server_check = (defined($server_check_cfg))?$server_check_cfg->val( "server", "ip"):undef;
1246 if( defined $server_check ) {
1247 unshift(@servers, $server_address);
1248 my $servers_string = join(", ", @servers);
1249 daemon_log("INFO: found servers in configuration file: $servers_string", 1);
1250 } else {
1251 my @tmp_servers;
1252 if ( !$server_domain) {
1253 # Try our DNS Searchlist
1254 my @domain_list = &get_dns_domains();
1255 my $tmp_domains;
1256 my $error_string;
1257 for my $domain (@domain_list) {
1258 chomp($domain);
1259 ($tmp_domains, $error_string) = &get_server_addresses($domain);
1260 if(@$tmp_domains) {
1261 for my $tmp_server(@$tmp_domains) {
1262 push @tmp_servers, $tmp_server;
1263 }
1264 }
1265 }
1266 if (0 == @tmp_servers) {
1267 my $log_string = "no gosa-si-server found in DNS for domain: ".join(", ", @domain_list) if (@domain_list);
1268 my $log_string2 = "server addresses in domain: ".join(", ",@$tmp_domains) if (defined($tmp_domains));
1269 daemon_log("ERROR: $log_string", 1) if (defined($log_string));
1270 daemon_log("ERROR: $log_string2", 1) if (defined($log_string2));
1271 daemon_log("ERROR: $error_string", 1) if (defined($error_string));
1272 daemon_log("ERROR: please specify a gosa-si-server address or a domain in config file", 1);
1273 kill 2, $$;
1274 }
1275 } else {
1276 @tmp_servers = &get_server_addresses($server_domain);
1277 if( 0 == @tmp_servers ) {
1278 daemon_log("ERROR: no gosa-si-server found in DNS for domain '$server_domain'",1);
1279 daemon_log("ERROR: please specify a gosa-si-server address or a domain in config file", 1);
1280 kill 2, $$;
1281 }
1282 }
1284 foreach my $server (@tmp_servers) {
1285 unshift(@servers, $server);
1286 }
1287 my $servers_string = join(", ", @servers);
1288 daemon_log("INFO: found servers in DNS: $servers_string", 1);
1289 }
1292 # Open a new fifo for FAI messages to gosa-si-server
1293 if (-p $fai_com_fifo) { unlink $fai_com_fifo }
1294 POSIX::mkfifo("$fai_com_fifo", 0600);
1296 # Open a new fifo for system communication,
1297 if (-p $system_com_fifo) { unlink $system_com_fifo }
1298 if ($system_com eq "enabled")
1299 {
1300 POSIX::mkfifo("$system_com_fifo", 0600);
1301 }
1303 POE::Session->create(
1304 inline_states => {
1305 _start => \&_start,
1306 _default => \&_default,
1307 sig_handler => \&sig_handler,
1308 register_at_gosa_si_server => \®ister_at_gosa_si_server,
1310 # trigger periodical tasks
1311 trigger_new_key => \&trigger_new_key,
1312 trigger_logged_in_users_report => \&trigger_logged_in_users_report,
1313 trigger_seen_messages => \&trigger_seen_messages,
1315 # trigger non periodical tasks
1316 trigger_set_terminal_server => \&trigger_set_terminal_server,
1318 # handle records from each defined file differently
1319 fai_fifo_record => \&fai_fifo_got_record,
1320 system_fifo_record => \&system_fifo_got_record,
1322 # handle file resets and errors the same way for each file
1323 file_reset => \&generic_file_reset,
1324 file_error => \&generic_file_error,
1325 }
1326 );
1328 POE::Kernel->run();
1329 exit;