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 Data::Dumper;
34 use Crypt::Rijndael;
35 use GOSA::GosaSupportDaemon;
36 use Digest::MD5 qw(md5_hex md5 md5_base64);
37 use MIME::Base64;
38 use XML::Simple;
39 use File::Basename;
40 use File::Spec;
41 use Fcntl;
43 # Workaround: need pure perl to make it work with UTF-8 :-(
44 $XML::Simple::PREFERRED_PARSER= "XML::SAX::PurePerl";
46 my $client_headURL;
47 my $client_revision;
48 my $client_status;
49 my $event_dir = "/usr/lib/gosa-si/client/events";
50 use lib "/usr/lib/gosa-si/client/events";
52 my (%cfg_defaults, $foreground, $verbose, $pid_file, $procid, $pid, $log_file, $fai_logpath);
53 my ($server_ip, $server_port, $server_timeout, $server_domain, $server_key_lifetime);
54 my ($client_port, $ldap_enabled, $ldap_config, $pam_config, $nss_config);
55 my ($root_uid, $adm_gid);
56 my $xml;
57 my $event_hash;
58 my $default_server_key;
59 my @servers;
60 my $gotoHardwareChecksum;
61 my $gosa_si_client_fifo;
62 my %files_to_watch;
63 $verbose= 1;
65 # globalise variables which are used in imported events
66 our $global_kernel;
67 our $cfg_file;
68 our $opts_file;
69 our $server_address;
70 our $client_address;
71 our $client_ip;
72 our $client_mac_address;
73 our $client_dnsname;
74 our $client_force_hostname;
75 our $server_key;
77 # default variables
78 our $REGISTERED = 0;
80 # path to fifo for non-gosa-si-client messages to gosa-si-server
81 $gosa_si_client_fifo = "/var/run/gosa-si-client.socket";
82 %files_to_watch = (fifo => $gosa_si_client_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 },
116 "server" => {
117 "ip" => [\$server_ip, "127.0.0.1"],
118 "port" => [\$server_port, "20081"],
119 "key" => [\$server_key, ""],
120 "timeout" => [\$server_timeout, 10],
121 "key-lifetime" => [\$server_key_lifetime, 600],
122 },
124 );
127 #=== FUNCTIONS = functions =====================================================
129 sub usage {
130 print STDERR << "EOF" ;
131 usage: $prg [-hvf] [-c config]
133 -h : this (help) message
134 -c <file> : config file
135 -f : foreground, process will not be forked to background
136 -v : be verbose (multiple to increase verbosity)
138 EOF
139 print "\n" ;
140 }
142 #=== FUNCTION ================================================================
143 # NAME: check_cmdline_param
144 # PARAMETERS:
145 # RETURNS:
146 # DESCRIPTION:
147 #===============================================================================
148 sub check_cmdline_param () {
149 my $err_config;
150 my $err_counter = 0;
151 if(not defined($cfg_file)) {
152 $cfg_file = "/etc/gosa-si/client.conf";
153 if(! -r $cfg_file) {
154 $err_config = "please specify a config file";
155 $err_counter += 1;
156 }
157 }
158 if( $err_counter > 0 ) {
159 &usage( "", 1 );
160 if( defined( $err_config)) { print STDERR "$err_config\n"}
161 print STDERR "\n";
162 exit( -1 );
163 }
164 }
167 #=== FUNCTION ================================================================
168 # NAME: check_pid
169 # PARAMETERS:
170 # RETURNS:
171 # DESCRIPTION:
172 #===============================================================================
173 sub check_pid {
174 $pid = -1;
175 # Check, if we are already running
176 if( open(LOCK_FILE, "<$pid_file") ) {
177 $pid = <LOCK_FILE>;
178 if( defined $pid ) {
179 chomp( $pid );
180 if( -f "/proc/$pid/stat" ) {
181 my($stat) = `cat /proc/$pid/stat` =~ m/$pid \((.+)\).*/;
182 if( $0 eq $stat ) {
183 close( LOCK_FILE );
184 exit -1;
185 }
186 }
187 }
188 close( LOCK_FILE );
189 unlink( $pid_file );
190 }
192 # create a syslog msg if it is not to possible to open PID file
193 if (not sysopen(LOCK_FILE, $pid_file, O_WRONLY|O_CREAT|O_EXCL, 0644)) {
194 my($msg) = "Couldn't obtain lockfile '$pid_file' ";
195 if (open(LOCK_FILE, '<', $pid_file)
196 && ($pid = <LOCK_FILE>))
197 {
198 chomp($pid);
199 $msg .= "(PID $pid)\n";
200 } else {
201 $msg .= "(unable to read PID)\n";
202 }
203 if( ! ($foreground) ) {
204 openlog( $0, "cons,pid", "daemon" );
205 syslog( "warning", $msg );
206 closelog();
207 }
208 else {
209 print( STDERR " $msg " );
210 }
211 exit( -1 );
212 }
213 }
216 sub sig_int_handler {
217 my ($signal) = @_;
219 daemon_log("shutting down gosa-si-client", 1);
220 system("kill `ps -C gosa-si-client -o pid=`");
221 }
222 $SIG{INT} = \&sig_int_handler;
225 #=== FUNCTION ================================================================
226 # NAME: logging
227 # PARAMETERS: level - string - default 'info'
228 # msg - string -
229 # facility - string - default 'LOG_DAEMON'
230 # RETURNS:
231 # DESCRIPTION:
232 #===============================================================================
233 sub daemon_log {
234 # log into log_file
235 my( $msg, $level ) = @_;
236 if(not defined $msg) { return }
237 if(not defined $level) { $level = 1 }
238 if(defined $log_file){
239 my $open_log_fh = sysopen(LOG_HANDLE, $log_file, O_WRONLY | O_CREAT | O_APPEND , 0440);
240 if(not $open_log_fh) {
241 print STDERR "cannot open $log_file: $!";
242 return;
243 }
244 # check owner and group of log_file and update settings if necessary
245 my ($dev, $ino, $mode, $nlink, $uid, $gid, $rdev, $size, $atime, $mtime, $ctime, $blksize, $blocks) = stat($log_file);
246 if((not $uid eq $root_uid) || (not $gid eq $adm_gid)) {
247 chown($root_uid, $adm_gid, $log_file);
248 }
250 chomp($msg);
251 if($level <= $verbose){
252 my ($seconds, $minutes, $hours, $monthday, $month,
253 $year, $weekday, $yearday, $sommertime) = localtime(time);
254 $hours = $hours < 10 ? $hours = "0".$hours : $hours;
255 $minutes = $minutes < 10 ? $minutes = "0".$minutes : $minutes;
256 $seconds = $seconds < 10 ? $seconds = "0".$seconds : $seconds;
257 my @monthnames = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
258 $month = $monthnames[$month];
259 $monthday = $monthday < 10 ? $monthday = "0".$monthday : $monthday;
260 $year+=1900;
262 my $log_msg = "$month $monthday $hours:$minutes:$seconds $prg $msg\n";
263 print LOG_HANDLE $log_msg;
264 if( $foreground ) {
265 print STDERR $log_msg;
266 }
267 }
268 close( LOG_HANDLE );
269 }
270 }
273 #=== FUNCTION ================================================================
274 # NAME: get_mac
275 # PARAMETERS: interface name (i.e. eth0)
276 # RETURNS: (mac address)
277 # DESCRIPTION: Uses ioctl to get mac address directly from system.
278 #===============================================================================
279 sub get_mac {
280 my $ifreq= shift;
281 my $result;
282 if ($ifreq && length($ifreq) > 0) {
283 if($ifreq eq "all") {
284 if(defined($server_ip)) {
285 $result = &get_local_mac_for_remote_ip($server_ip);
286 }
287 elsif ($client_mac_address && length($client_mac_address) > 0 && !($client_mac_address eq "00:00:00:00:00:00")){
288 $result = &client_mac_address;
289 }
290 else {
291 $result = "00:00:00:00:00:00";
292 }
293 } else {
294 my $SIOCGIFHWADDR= 0x8927; # man 2 ioctl_list
296 # A configured MAC Address should always override a guessed value
297 if ($client_mac_address and length($client_mac_address) > 0 and not($client_mac_address eq "00:00:00:00:00:00")) {
298 $result= $client_mac_address;
299 }
300 else {
301 socket SOCKET, PF_INET, SOCK_DGRAM, getprotobyname('ip')
302 or die "socket: $!";
304 if(ioctl SOCKET, $SIOCGIFHWADDR, $ifreq) {
305 my ($if, $mac)= unpack 'h36 H12', $ifreq;
307 if (length($mac) > 0) {
308 $mac=~ m/^([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])$/;
309 $mac= sprintf("%s:%s:%s:%s:%s:%s", $1, $2, $3, $4, $5, $6);
310 $result = $mac;
311 }
312 }
313 }
314 }
315 }
316 return $result;
317 }
321 #=== FUNCTION ================================================================
322 # NAME: get_local_mac_for_remote_ip
323 # PARAMETERS: none (takes server_ip from global variable)
324 # RETURNS: (ip address from interface that is used for communication)
325 # DESCRIPTION: Uses ioctl to get routing table from system, checks which entry
326 # matches (defaultroute last).
327 #===============================================================================
328 sub get_local_mac_for_remote_ip {
329 my $server_ip= shift;
330 my $result= "00:00:00:00:00:00";
332 if($server_ip =~ /^(\d\d?\d?\.){3}\d\d?\d?$/) {
333 my $PROC_NET_ROUTE= ('/proc/net/route');
335 open(PROC_NET_ROUTE, "<$PROC_NET_ROUTE")
336 or die "Could not open $PROC_NET_ROUTE";
338 my @ifs = <PROC_NET_ROUTE>;
340 close(PROC_NET_ROUTE);
342 # Eat header line
343 shift @ifs;
344 chomp @ifs;
345 foreach my $line(@ifs) {
346 my ($Iface,$Destination,$Gateway,$Flags,$RefCnt,$Use,$Metric,$Mask,$MTU,$Window,$IRTT)=split(/\s/, $line);
347 my $destination;
348 my $mask;
349 my ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Destination);
350 $destination= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
351 ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Mask);
352 $mask= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
353 if(new NetAddr::IP($server_ip)->within(new NetAddr::IP($destination, $mask))) {
354 # destination matches route, save mac and exit
355 $result= &get_mac($Iface);
356 last;
357 }
358 }
359 } else {
360 daemon_log("get_local_mac_for_remote_ip was called with a non-ip parameter: $server_ip", 1);
361 }
362 return $result;
363 }
366 sub generate_hw_digest {
367 my $hw_data;
368 foreach my $line (split /\n/, `cat /proc/bus/pci/devices`) {
369 $hw_data.= sprintf "%s", $line =~ /[^\s]+\s([^\s]+)\s.*/;
370 }
371 return(md5_base64($hw_data));
372 }
375 sub create_ciphering {
376 my ($passwd) = @_;
377 if((!defined($passwd)) || length($passwd)==0) {
378 $passwd = "";
379 }
380 $passwd = substr(md5_hex("$passwd") x 32, 0, 32);
381 my $iv = substr(md5_hex('GONICUS GmbH'),0, 16);
382 my $my_cipher = Crypt::Rijndael->new($passwd , Crypt::Rijndael::MODE_CBC());
383 $my_cipher->set_iv($iv);
384 return $my_cipher;
385 }
388 sub encrypt_msg {
389 my ($msg, $key) = @_;
390 my $my_cipher = &create_ciphering($key);
391 my $len;
392 {
393 use bytes;
394 $len= 16-length($msg)%16;
395 }
396 $msg = "\0"x($len).$msg;
397 $msg = $my_cipher->encrypt($msg);
398 chomp($msg = &encode_base64($msg));
399 # there are no newlines allowed inside msg
400 $msg=~ s/\n//g;
401 return $msg;
402 }
405 sub decrypt_msg {
407 my ($msg, $key) = @_ ;
408 $msg = &decode_base64($msg);
409 my $my_cipher = &create_ciphering($key);
410 $msg = $my_cipher->decrypt($msg);
411 $msg =~ s/\0*//g;
412 return $msg;
413 }
416 #=== FUNCTION ================================================================
417 # NAME: send_msg_hash_to_target
418 # PARAMETERS: msg_hash - hash - xml_hash created with function create_xml_hash
419 # PeerAddr string - socket address to send msg
420 # PeerPort string - socket port, if not included in socket address
421 # RETURNS: nothing
422 # DESCRIPTION: ????
423 #===============================================================================
424 sub send_msg_hash_to_target {
425 my ($msg_hash, $address, $encrypt_key) = @_ ;
426 my $msg = &create_xml_string($msg_hash);
427 my $header = @{$msg_hash->{'header'}}[0];
428 my $error = &send_msg_to_target($msg, $address, $encrypt_key, $header);
430 return $error;
431 }
434 sub send_msg_to_target {
435 my ($msg, $address, $encrypt_key, $msg_header) = @_ ;
436 my $error = 0;
438 if( $msg_header ) { $msg_header = "'$msg_header'-"; }
439 else { $msg_header = ""; }
441 # Memorize own source address
442 $msg =~ /<source>(\S+)<\/source>/;
443 my $own_source_address = $1;
445 # encrypt xml msg
446 my $crypted_msg = &encrypt_msg($msg, $encrypt_key);
448 # opensocket
449 my $socket = &open_socket($address);
450 if( !$socket ) {
451 daemon_log("WARNING: cannot send ".$msg_header."msg to $address , host not reachable", 3);
452 if ($REGISTERED == 1) {
453 $REGISTERED = 0; # if server is not available, cause reregistering
454 daemon_log("INFO: cause reregistering at gosa-si-server", 5);
455 $global_kernel->yield('register_at_gosa_si_server');
457 }
458 $error++;
459 }
461 # send xml msg
462 if( $error == 0 ) {
463 print $socket $crypted_msg.";$own_source_address\n";
464 daemon_log("INFO: send ".$msg_header."msg to $address", 5);
465 daemon_log("DEBUG: message:\n$msg", 9);
466 }
468 # close socket in any case
469 if( $socket ) {
470 close $socket;
471 }
473 return $error;
474 }
477 sub write_to_file {
478 my ($string, $file) = @_;
479 my $error = 0;
481 if( not defined $file || not -f $file ) {
482 &main::daemon_log("ERROR: $prg: check '-f file' failed: $file", 1);
483 $error++;
484 }
485 if( not defined $string || 0 == length($string)) {
486 &main::daemon_log("ERROR: $prg: empty string to write to file '$file'", 1);
487 $error++;
488 }
490 if( $error == 0 ) {
492 chomp($string);
494 if (open(FILE, ">> $file")){
495 print FILE $string."\n";
496 close(FILE);
497 }
498 }
500 return;
501 }
504 sub open_socket {
505 my ($PeerAddr, $PeerPort) = @_ ;
506 if(defined($PeerPort)){
507 $PeerAddr = $PeerAddr.":".$PeerPort;
508 }
509 my $socket;
510 $socket = new IO::Socket::INET(PeerAddr => $PeerAddr,
511 Porto => "tcp",
512 Type => SOCK_STREAM,
513 Timeout => 5,
514 );
515 if(not defined $socket) {
516 return;
517 }
518 &daemon_log("DEBUG: open_socket: $PeerAddr", 7);
519 return $socket;
520 }
523 #=== FUNCTION ================================================================
524 # NAME: register_at_server
525 # PARAMETERS:
526 # RETURNS:
527 # DESCRIPTION:
528 #===============================================================================
529 sub register_at_gosa_si_server {
530 my ($kernel) = $_[KERNEL];
531 my $try_to_register = 0;
533 # if client is already registered, stop registration process
534 if ($REGISTERED) {
535 $kernel->delay('register_at_gosa_si_server');
537 # client is not registered, start registration process
538 } else {
539 # clear all other triggered events and wait till registration was successful
540 $kernel->delay('trigger_new_key');
542 # create new passwd and ciphering object for client-server communication
543 $server_key = &create_passwd();
545 my $events = join( ",", keys %{$event_hash} );
546 while(1) {
547 $try_to_register++;
549 # after one complete round through all server, stop trying to register
550 if( $try_to_register > @servers ) { last; }
552 # fetch first gosa-si-server from @servers
553 # append shifted gosa-si-server at the end of @servers, so looking for servers never stop if
554 # a registration never occured
555 my $server = shift(@servers);
556 push( @servers, $server );
558 # Check if our ip is resolvable - if not: don't try to register
559 if(!(defined($server) && $server =~ m/^[0-9\.]*?:.*$/)) {
560 &main::daemon_log("ERROR: Server with address '".defined($server)?$server:""."' is invalid!", 1);
561 if (length(@servers) == 1) {
562 &main::daemon_log("ERROR: No valid servers found!", 1);
563 exit(1);
564 }
565 }
567 # Check if our ip is resolvable - if not: don't try to register
568 my $ip= &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
569 my $dnsname= gethostbyaddr(inet_aton($ip), AF_INET);
570 if(!defined($dnsname)) {
571 if( defined($client_force_hostname) && $client_force_hostname eq "true") {
572 $dnsname = `hostname`;
573 } else {
574 &write_to_file("goto-error-dns:$ip", $fai_logpath);
575 &main::daemon_log("ERROR: ip is not resolvable, no registration possible. Write 'goto-error-dns:$ip' to $fai_logpath", 1);
576 exit(1);
577 }
578 }
580 # create registration msg
581 my $local_ip = &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
582 my $local_mac = &get_local_mac_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
583 my $register_hash = &create_xml_hash("here_i_am", $local_ip.":".$client_port, $server);
584 &add_content2xml_hash($register_hash, "new_passwd", $server_key);
585 &add_content2xml_hash($register_hash, "mac_address", $local_mac);
586 &add_content2xml_hash($register_hash, "events", $events);
587 &add_content2xml_hash($register_hash, "client_status", $client_status);
588 &add_content2xml_hash($register_hash, "client_revision", $client_revision);
589 &add_content2xml_hash($register_hash, "gotoHardwareChecksum", $gotoHardwareChecksum);
590 &add_content2xml_hash($register_hash, "key_lifetime", $server_key_lifetime);
592 # Add $HOSTNAME from ENV if force-hostname is set
593 if( defined($client_force_hostname) && $client_force_hostname eq "true") {
594 if(defined($ENV{HOSTNAME}) && length($ENV{HOSTNAME}) >0 ) {
595 &add_content2xml_hash($register_hash, "force-hostname", $ENV{HOSTNAME});
596 } else {
597 &main::daemon_log("force-hostname was set to true, but no \$HOSTNAME was found in Environment!",0);
598 }
599 }
601 # send xml hash to server with general server passwd
602 my $res = &send_msg_hash_to_target($register_hash, $server, $default_server_key);
604 # if delivery of registration msg succeed
605 if($res eq "0") {
606 # reset try_to_register
607 $try_to_register = 0;
609 # Set fixed client address and mac address
610 $client_ip= &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
611 $client_address= "$client_ip:$client_port";
612 $client_mac_address = $local_mac;
613 $client_dnsname = $dnsname;
614 last;
616 # delivery of registration msg failed
617 } else {
618 # wait 1 sec until trying to register again
619 sleep(1);
620 next;
621 }
623 } # end of while
624 # one circle through all servers finished and no registration succeed
625 if ( $try_to_register >= @servers ) {
626 &write_to_file("gosa-si-no-server-available", $fai_logpath);
627 $kernel->delay_set('register_at_gosa_si_server', $delay_set_time);
629 # delivery of registraion msg succeed, waiting for server response
630 } else {
631 daemon_log("INFO: waiting for msg 'register_at_gosa_si_server'",5);
632 $kernel->delay_set('register_at_gosa_si_server', $delay_set_time);
633 # clear old settings and set it again
634 $kernel->delay('trigger_new_key');
635 $kernel->delay_set('trigger_new_key', $server_key_lifetime);
636 }
638 }
639 return;
640 }
643 sub check_key_and_xml_validity {
644 my ($crypted_msg, $module_key) = @_;
646 my $msg;
647 my $msg_hash;
648 eval{
649 $msg = &decrypt_msg($crypted_msg, $module_key);
650 &main::daemon_log("decrypted_msg: \n$msg", 9);
652 $msg_hash = $xml->XMLin($msg, ForceArray=>1);
654 ##############
655 # check header
656 my $header_l = $msg_hash->{'header'};
657 if( 1 != @{$header_l} ) {
658 die 'no or more headers specified';
659 }
660 my $header = @{$header_l}[0];
661 if( 0 == length $header) {
662 die 'header has length 0';
663 }
665 ##############
666 # check source
667 my $source_l = $msg_hash->{'source'};
668 if( 1 != @{$source_l} ) {
669 die 'no or more than 1 sources specified';
670 }
671 my $source = @{$source_l}[0];
672 if( 0 == length $source) {
673 die 'source has length 0';
674 }
675 unless( $source =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ) {
676 die "source '$source' is neither a complete ip-address with port nor 'GOSA'";
677 }
679 ##############
680 # check target
681 my $target_l = $msg_hash->{'target'};
682 if( 1 != @{$target_l} ) {
683 die 'no or more than 1 targets specified ';
684 }
685 my $target = @{$target_l}[0];
686 if( 0 == length $target) {
687 die 'target has length 0 ';
688 }
689 unless( $target =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ){
690 die "source is neither a complete ip-address with port nor 'GOSA'";
691 }
692 };
693 if($@) {
694 &main::daemon_log("WARNING: do not understand the message or msg is not gosa-si envelope conform:", 5);
695 &main::daemon_log("$@", 8);
696 $msg = undef;
697 $msg_hash = undef;
698 }
700 return ($msg, $msg_hash);
701 }
704 sub check_outgoing_xml_validity {
705 my ($msg) = @_;
707 my $msg_hash;
708 eval{
709 $msg_hash = $xml->XMLin($msg, ForceArray=>1);
711 ##############
712 # check header
713 my $header_l = $msg_hash->{'header'};
714 if( 1 != @{$header_l} ) {
715 die 'no or more than one headers specified';
716 }
717 my $header = @{$header_l}[0];
718 if( 0 == length $header) {
719 die 'header has length 0';
720 }
722 ##############
723 # check source
724 my $source_l = $msg_hash->{'source'};
725 if( 1 != @{$source_l} ) {
726 die 'no or more than 1 sources specified';
727 }
728 my $source = @{$source_l}[0];
729 if( 0 == length $source) {
730 die 'source has length 0';
731 }
732 unless( $source =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ||
733 $source =~ /^GOSA$/i ) {
734 die "source '$source' is neither a complete ip-address with port";
735 }
737 ##############
738 # check target
739 my $target_l = $msg_hash->{'target'};
740 if( 1 != @{$target_l} ) {
741 die "no or more than one targets specified";
742 }
743 foreach my $target (@$target_l) {
744 if( 0 == length $target) {
745 die "target has length 0";
746 }
747 unless( $target =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ) {
748 die "target '$target' is not a complete ip-address with port or a valid target name";
749 }
750 }
751 };
752 if($@) {
753 daemon_log("WARNING: outgoing msg is not gosa-si envelope conform", 5);
754 daemon_log("$@ $msg", 8);
755 $msg_hash = undef;
756 }
757 return ($msg_hash);
758 }
761 sub trigger_new_key {
762 my ($kernel) = $_[KERNEL] ;
764 my $msg = "<xml><header>new_key</header><source>$client_address</source><target>$client_address</target></xml>";
765 &send_msg_to_target($msg, $client_address, $server_key, 'new_key');
767 $kernel->delay_set('trigger_new_key', $server_key_lifetime);
768 }
771 sub trigger_logged_in_users_report {
772 my ($kernel) = $_[KERNEL] ;
774 # just do if client is registered already
775 if( $REGISTERED ) {
776 my $result = qx(/usr/bin/users);
777 my @logged_in_user_list;
778 if( defined $result ) {
779 chomp($result);
780 @logged_in_user_list = split(/\s/, $result);
781 }
783 system("echo 'CURRENTLY_LOGGED_IN ".join(" ", @logged_in_user_list)."' > /var/run/gosa-si-client.socket");
784 $kernel->delay_set('trigger_logged_in_users_report', $trigger_logged_in_users_report_delay);
785 } else {
786 # try it in 10 sec again
787 $kernel->delay_set('trigger_logged_in_users_report', 10);
788 }
789 }
792 sub trigger_seen_messages {
793 my ($kernel) = $_[KERNEL] ;
795 # Select all files under /tmp with prefix 'goto_notify'
796 my $goto_dir = "/tmp";
797 opendir(DIR, $goto_dir);
798 my @goto_files = grep { /^goto_notify_/ && -f "$goto_dir/$_" } readdir(DIR);
799 closedir DIR;
801 # Check if file has 'seen' tag
802 foreach my $goto_file (@goto_files) {
803 open(FILE, "$goto_dir/$goto_file");
804 my @lines = <FILE>;
805 close FILE;
807 my $source;
808 my $target;
809 my $usr;
810 my $subject;
811 my $message;
812 my $seen = 0;
813 chomp(@lines);
814 foreach my $line (@lines) {
815 if ($line =~ /^source:([\S\s]*)$/) {
816 $source = $1
817 }
818 if ($line =~ /^target:([\S\s]*)$/) {
819 $target = $1;
820 }
821 if ($line =~ /^usr:([\S\s]*)$/) {
822 $usr = $1;
823 }
824 if ($line =~ /^subject:([\S\s]*)$/) {
825 $subject = $1;
826 }
827 if ($line =~ /^message:([\S\s]*)$/) {
828 $message = $1;
829 }
830 if ($line =~ /^seen$/) {
831 $seen++;
832 }
833 }
835 # Send 'confirm_usr_msg' back to msg-hosting server
836 if ($seen) {
837 my %data = ('usr'=>$usr, 'subject'=>$subject, 'message'=>$message);
838 my $confirm_msg = &build_msg("confirm_usr_msg", $target, $source, \%data);
839 my $send_error = &send_msg_to_target($confirm_msg, $server_address, $server_key);
841 # Delete file
842 if (not $send_error) {
843 system("rm $goto_dir/$goto_file");
844 }
845 }
846 }
848 $kernel->delay_set('trigger_seen_messages', $trigger_seen_messages_delay);
850 return;
851 }
854 sub generic_file_error {
855 my ( $heap, $operation, $errno, $error_string, $wheel_id ) =
856 @_[ HEAP, ARG0, ARG1, ARG2, ARG3 ];
858 my $service = $heap->{services}->{$wheel_id};
859 daemon_log("ERROR: '$service' watcher $operation error $errno: $error_string", 1);
860 daemon_log("ERROR: shutting down '$service' file watcher", 1);
862 delete $heap->{services}->{$wheel_id};
863 delete $heap->{watchers}->{$wheel_id};
864 return;
865 }
868 sub fifo_got_record {
869 my $file_record = $_[ARG0];
870 my $header;
871 my $content = "";
872 daemon_log("DEBUG: fifo got record: $file_record", 7);
874 $file_record =~ /^(\S+)[ ]?([\s\S]+)?$/;
875 if( defined $1 ) {
876 $header = $1;
877 } else {
878 return;
879 }
881 if( defined $2 ) {
882 $content = $2;
883 }
885 my $clmsg_hash = &create_xml_hash("CLMSG_$header", $client_address, $server_address, $content);
886 &add_content2xml_hash($clmsg_hash, "macaddress", $client_mac_address);
887 my $utc_ts = &main::get_utc_time();
888 &add_content2xml_hash($clmsg_hash, "timestamp", $utc_ts);
889 my $clmsg = &create_xml_string($clmsg_hash);
890 &send_msg_to_target($clmsg, $server_address, $server_key, "CLMSG_$header");
892 # if installation finished, save all log files
893 if ($file_record eq "TASKBEGIN finish") {
894 &save_fai_log($fai_log_dir);
895 }
897 return;
898 }
901 sub save_fai_log {
902 my ($fai_log_dir) = @_ ;
903 my $FAI_DIR;
905 # Directory for log files after a softupdate
906 my $log_dir = File::Spec->catdir($fai_log_dir, "localhost/last");
908 if (not -d $log_dir) {
909 # Directory for log files after a new installation
910 $log_dir = "/tmp/fai";
911 if (not -d $log_dir) {
912 daemon_log("ERROR: cannot open directory $log_dir", 1);
913 return;
914 }
915 }
917 opendir($FAI_DIR, "$log_dir");
918 my @log_files = readdir($FAI_DIR);
919 closedir($FAI_DIR);
921 my @log_list;
922 foreach my $log_file (@log_files) {
923 if( $log_file eq "." || $log_file eq ".." ) { next; }
925 my $log = "log_file:$log_file:";
926 $log_file = File::Spec->catfile( $log_dir, $log_file );
928 if (not -f $log_file) {
929 daemon_log("ERROR: cannot read $log_file", 1);
930 next;
931 }
933 open(FILE, "<$log_file");
934 my @lines = <FILE> ;
935 close (FILE);
936 my $log_string = join("", @lines);
937 $log .= &encode_base64($log_string);
938 push(@log_list, $log);
939 }
941 my $all_log_string = join("\n", @log_list);
942 my $msg_hash = &create_xml_hash("CLMSG_save_fai_log", $client_address, $server_address, $all_log_string);
943 &add_content2xml_hash($msg_hash, "macaddress", $client_mac_address);
944 my $msg = &create_xml_string($msg_hash);
945 &send_msg_to_target($msg, $server_address, $server_key, "CLMSG_save_fai_log");
947 }
950 sub sig_handler {
951 my ($kernel, $signal) = @_[KERNEL, ARG0] ;
952 daemon_log("0 INFO got signal '$signal'", 1);
953 $kernel->sig_handled();
954 return;
955 }
958 sub _start {
959 my ($kernel, $heap) = @_[KERNEL, HEAP];
960 $kernel->alias_set('client_session');
961 $global_kernel = $kernel; # this is used to throw events at each point of the skript
963 $kernel->sig(USR1 => "sig_handler");
965 # force a registration at a gosa-si-server
966 $kernel->yield('register_at_gosa_si_server');
968 # install all file watcher defined
969 while( my($name, $file) = each %files_to_watch ) {
970 my $watcher = POE::Wheel::FollowTail->new(
971 Filename => $file,
972 InputEvent => $name."_record",
973 # ResetEvent => "file_reset",
974 ErrorEvent => "file_error",
975 );
976 # $heap->{tail} = POE::Wheel::Run->new(
977 # Program => [ "/usr/bin/tail", "-f", $file ],
978 # StdoutEvent => $file_name."_record",
979 # );
980 $heap->{services}->{ $watcher->ID } = $name;
981 $heap->{watchers}->{ $watcher->ID } = $watcher;
982 }
983 $kernel->yield('trigger_logged_in_users_report');
984 $kernel->yield('trigger_seen_messages');
985 }
988 sub _default {
989 daemon_log("ERROR: can not handle incoming msg with header '$_[ARG0]'", 1);
990 return;
991 }
994 sub server_input {
995 my ($kernel, $heap, $input, $wheel) = @_[KERNEL, HEAP, ARG0, ARG1];
996 my $remote_ip = $heap->{'remote_ip'},
997 my $error = 0;
998 my $answer;
1001 daemon_log("INFO: Incoming msg from '$remote_ip'", 5);
1002 daemon_log("DEBUG: Incoming msg:\n$input\n", 9);
1004 my ($msg, $msg_hash) = &check_key_and_xml_validity($input, $server_key);
1005 if( (!$msg) || (!$msg_hash) ) {
1006 daemon_log("WARNING: Deciphering of incoming msg failed", 3);
1007 if($server_address =~ /$remote_ip/) {
1008 # got a msg from gosa-si-server which can not be decrypted, may the secrete not up-to-date
1009 # cause a reregistering with a new secrete handshake
1010 daemon_log("WARNING: Message from gosa-si-server could not be understood, cause reregistering at server", 3);
1012 # if client is alread in a registration process, that means not registered, do nothing
1013 # if not, cause re-registration
1014 if (not $REGISTERED) {
1015 &daemon_log("WARNING: gosa-si-client is already in a registration process so ignore this message", 3);
1016 } else {
1017 $REGISTERED = 0;
1018 $kernel->post('client_session', 'register_at_gosa_si_server');
1019 }
1020 }
1021 $error++;
1022 }
1025 ######################
1026 # process incoming msg
1027 if( $error == 0 ) {
1028 my $header = @{$msg_hash->{header}}[0];
1029 my $source = @{$msg_hash->{source}}[0];
1031 if( exists $event_hash->{$header} ) {
1033 # a event exists with the header as name
1034 daemon_log("INFO: found event '$header' at event-module '".$event_hash->{$header}."'", 5);
1035 no strict 'refs';
1036 $answer = &{$event_hash->{$header}."::$header"}($msg, $msg_hash);
1037 }
1038 else {
1039 daemon_log("WARNING: no event '$header' found in event modules under $event_dir", 3);
1040 }
1041 }
1043 ########
1044 # answer
1045 if( $answer ) {
1047 #check gosa-si envelope validity
1048 my $answer_hash = &check_outgoing_xml_validity($answer);
1050 if( $answer_hash ) {
1051 # answer is valid
1053 # preprocessing
1054 if( $answer =~ "<header>registered</header>") {
1055 # set registered flag to true to stop sending further registered msgs
1056 $REGISTERED = 1;
1057 }
1058 else {
1059 $answer =~ /<header>(\S+)<\/header>/;
1060 &send_msg_to_target($answer, $server_address, $server_key, $1);
1061 }
1063 # postprocessing
1064 if( $answer =~ "<header>new_key</header>") {
1065 # set new key to global variable
1066 $answer =~ /<new_key>(\S*?)<\/new_key>/;
1067 my $new_key = $1;
1068 $server_key = $new_key;
1069 }
1070 }
1072 }
1074 return;
1075 }
1078 #==== MAIN = main ==============================================================
1079 # parse commandline options
1080 Getopt::Long::Configure( "bundling" );
1081 GetOptions("h|help" => \&usage,
1082 "c|config=s" => \$cfg_file,
1083 "f|foreground" => \$foreground,
1084 "v|verbose+" => \$verbose,
1085 );
1087 # read and set config parameters
1088 &check_cmdline_param ;
1089 &read_configfile($cfg_file, %cfg_defaults);
1090 &check_pid;
1093 # forward error messages to logfile
1094 if ( ! $foreground ) {
1095 open( STDIN, '+>/dev/null' );
1096 open( STDOUT, '+>&STDIN' );
1097 open( STDERR, '+>&STDIN' );
1098 }
1100 # Just fork, if we are not in foreground mode
1101 if( ! $foreground ) {
1102 chdir '/' or die "Can't chdir to /: $!";
1103 $pid = fork;
1104 setsid or die "Can't start a new session: $!";
1105 umask 0;
1106 } else {
1107 $pid = $$;
1108 }
1110 # Do something useful - put our PID into the pid_file
1111 if( 0 != $pid ) {
1112 open( LOCK_FILE, ">$pid_file" );
1113 print LOCK_FILE "$pid\n";
1114 close( LOCK_FILE );
1115 if( !$foreground ) {
1116 exit( 0 )
1117 };
1118 }
1120 # parse head url and revision from svn
1121 my $client_status_hash = { 'developmental'=>'revision', 'stable'=>'release'};
1122 $client_version =~ /^\$HeadURL: (\S+) \$:\$Rev: (\d+) \$$/;
1123 $client_headURL = defined $1 ? $1 : 'unknown' ;
1124 $client_revision = defined $2 ? $2 : 'unknown' ;
1125 if ($client_headURL =~ /\/tag\// ||
1126 $client_headURL =~ /\/branches\// ) {
1127 $client_status = "stable";
1128 } else {
1129 $client_status = "developmental" ;
1130 }
1132 # Determine root uid and adm gid, used for creating log files
1133 $root_uid = getpwnam('root');
1134 $adm_gid = getgrnam('adm');
1135 if(not defined $adm_gid){
1136 $adm_gid = getgrnam('root');
1137 }
1140 daemon_log(" ", 1);
1141 daemon_log("$prg started!", 1);
1142 daemon_log("INFO: status: $client_status", 1);
1143 daemon_log("INFO: ".$client_status_hash->{$client_status}.": $client_revision", 1);
1145 # delete old DBsqlite lock files
1146 system('rm -f /tmp/gosa_si_lock*gosa-si-client*');
1148 # detect ip and mac address and complete host address
1149 $client_address = $client_ip.":".$client_port;
1150 my $network_interface= &get_interface_for_ip($client_ip);
1151 $client_mac_address= &get_mac($network_interface);
1152 daemon_log("INFO: ip address detected: $client_ip", 1);
1153 daemon_log("INFO: gosa-si-client mac address detected: $client_mac_address", 1);
1156 # import events
1157 my ($error, $result, $tmp_hash) = &import_events($event_dir);
1158 while (my ($module, $mod_event_hash) = each %$tmp_hash) {
1159 while (my ($event_name, $nothing) = each %$mod_event_hash) {
1160 $event_hash->{$event_name} = $module;
1161 }
1162 }
1164 foreach my $log_line (@$result) {
1165 if ($log_line =~ / succeed: /) {
1166 &main::daemon_log("0 DEBUG: $log_line", 7);
1167 } else {
1168 &main::daemon_log("0 ERROR: $log_line", 1);
1169 }
1170 }
1173 # compute hardware checksum
1174 $gotoHardwareChecksum= &generate_hw_digest();
1175 daemon_log("INFO: gotoHardwareChecksum detected: $gotoHardwareChecksum", 1);
1178 # create socket for incoming xml messages
1179 POE::Component::Server::TCP->new(
1180 Alias => 'gosa-si-client',
1181 Port => $client_port,
1182 ClientInput => \&server_input,
1183 );
1184 daemon_log("INFO: start socket for incoming xml messages at port '$client_port' ", 1);
1187 # prepare variables
1188 if( inet_aton($server_ip) ){ $server_ip = inet_ntoa(inet_aton($server_ip)); }
1189 if (defined $server_ip && defined $server_port) {
1190 $server_address = $server_ip.":".$server_port;
1191 }
1192 $xml = new XML::Simple();
1193 $default_server_key = $server_key;
1196 # add gosa-si-server address from config file at first position of server list
1197 my $server_check_cfg = Config::IniFiles->new( -file => $cfg_file );
1198 my $server_check = (defined($server_check_cfg))?$server_check_cfg->val( "server", "ip"):undef;
1199 if( defined $server_check ) {
1200 unshift(@servers, $server_address);
1201 my $servers_string = join(", ", @servers);
1202 daemon_log("INFO: found servers in configuration file: $servers_string", 1);
1203 } else {
1204 my @tmp_servers;
1205 if ( !$server_domain) {
1206 # Try our DNS Searchlist
1207 my @domain_list = &get_dns_domains();
1208 my $tmp_domains;
1209 my $error_string;
1210 for my $domain (@domain_list) {
1211 chomp($domain);
1212 ($tmp_domains, $error_string) = &get_server_addresses($domain);
1213 if(@$tmp_domains) {
1214 for my $tmp_server(@$tmp_domains) {
1215 push @tmp_servers, $tmp_server;
1216 }
1217 }
1218 }
1219 if (0 == @tmp_servers) {
1220 my $log_string = "no gosa-si-server found!";
1221 $log_string .= "\n\tdetermined domains out of /etc/resolv.conf: ".join(", ", @domain_list) if (@domain_list);
1222 $log_string .= "\n\tdetermined server addresses in domains: ".join(", ",@$tmp_domains) if (defined($tmp_domains));
1223 daemon_log("ERROR: $log_string", 1) if (defined($log_string));
1224 daemon_log("ERROR: $error_string", 1) if (defined($error_string));
1225 daemon_log("ERROR: please specify a gosa-si-server address or a domain in config file", 1);
1226 kill 2, $$;
1227 }
1228 } else {
1229 @tmp_servers = &get_server_addresses($server_domain);
1230 if( 0 == @tmp_servers ) {
1231 daemon_log("ERROR: no gosa-si-server found in DNS for domain '$server_domain'",1);
1232 daemon_log("ERROR: please specify a gosa-si-server address or a domain in config file", 1);
1233 kill 2, $$;
1234 }
1235 }
1237 foreach my $server (@tmp_servers) {
1238 unshift(@servers, $server);
1239 }
1240 my $servers_string = join(", ", @servers);
1241 daemon_log("INFO: found servers in DNS: $servers_string", 1);
1242 }
1245 # open fifo for non-gosa-si-client-msgs to gosa-si-server
1246 POSIX::mkfifo("$gosa_si_client_fifo", "0600");
1249 POE::Session->create(
1250 inline_states => {
1251 _start => \&_start,
1252 _default => \&_default,
1253 sig_handler => \&sig_handler,
1254 register_at_gosa_si_server => \®ister_at_gosa_si_server,
1256 # trigger periodical tasks
1257 trigger_new_key => \&trigger_new_key,
1258 trigger_logged_in_users_report => \&trigger_logged_in_users_report,
1259 trigger_seen_messages => \&trigger_seen_messages,
1261 # handle records from each defined file differently
1262 fifo_record => \&fifo_got_record,
1264 # handle file resets and errors the same way for each file
1265 file_reset => \&generic_file_reset,
1266 file_error => \&generic_file_error,
1267 }
1268 );
1270 POE::Kernel->run();
1271 exit;