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 $system_com;
62 $verbose= 1;
64 # globalise variables which are used in imported events
65 our $global_kernel;
66 our $cfg_file;
67 our $opts_file;
68 our $server_address;
69 our $client_address;
70 our $client_ip;
71 our $client_mac_address;
72 our $client_dnsname;
73 our $client_force_hostname;
74 our $server_key;
75 our $terminal_server_hash;
77 # default variables
78 our $REGISTERED = 0;
80 # path to fifo for non-gosa-si-client messages to gosa-si-server
81 my $fai_com_fifo = "/var/run/gosa-si-client.socket";
82 my $system_com_fifo = "/var/run/gosa-si-client-system-com.socket";
83 my %files_to_watch = (fai_fifo => $fai_com_fifo, system_fifo => $system_com_fifo);
85 # in function register_at_gosa_si_server, after which period of seconds a new registration should be tried if a registration was
86 # not successful until now
87 my $delay_set_time = 10;
88 our $prg= basename($0);
90 # all n seconds the client reports logged_in users to gosa-si-server
91 my $trigger_logged_in_users_report_delay = 600;
93 # all n seconds the client reports messages seen by user
94 my $trigger_seen_messages_delay = 30;
96 # directory where all log files from installation are stored
97 my $fai_log_dir = "/var/log/fai";
99 %cfg_defaults = (
100 "general" =>
101 {"log-file" => [\$log_file, "/var/run/".$prg.".log"],
102 "pid-file" => [\$pid_file, "/var/run/".$prg.".pid"],
103 "opts-file" => [\$opts_file, "/var/run/".$prg.".opts"],
104 },
105 "client" =>
106 {"port" => [\$client_port, "20083"],
107 "ip" => [\$client_ip, "0.0.0.0"],
108 "mac-address" => [\$client_mac_address, "00:00:00:00:00:00"],
109 "server-domain" => [\$server_domain, ""],
110 "ldap" => [\$ldap_enabled, 1],
111 "ldap-config" => [\$ldap_config, "/etc/ldap/ldap.conf"],
112 "pam-config" => [\$pam_config, "/etc/pam_ldap.conf"],
113 "nss-config" => [\$nss_config, "/etc/libnss-ldap.conf"],
114 "fai-logpath" => [\$fai_logpath, "/var/log/fai/fai.log"],
115 "force-hostname" => [\$client_force_hostname, "false"],
116 "system-com" => [\$system_com, "disabled"],
117 },
118 "server" => {
119 "ip" => [\$server_ip, "127.0.0.1"],
120 "port" => [\$server_port, "20081"],
121 "key" => [\$server_key, ""],
122 "timeout" => [\$server_timeout, 10],
123 "key-lifetime" => [\$server_key_lifetime, 600],
124 },
126 );
129 #=== FUNCTIONS = functions =====================================================
131 sub usage {
132 print STDERR << "EOF" ;
133 usage: $prg [-hvf] [-c config]
135 -h : this (help) message
136 -c <file> : config file
137 -f : foreground, process will not be forked to background
138 -v : be verbose (multiple to increase verbosity)
140 EOF
141 print "\n" ;
142 }
144 #=== FUNCTION ================================================================
145 # NAME: check_cmdline_param
146 # PARAMETERS:
147 # RETURNS:
148 # DESCRIPTION:
149 #===============================================================================
150 sub check_cmdline_param () {
151 my $err_config;
152 my $err_counter = 0;
153 if(not defined($cfg_file)) {
154 $cfg_file = "/etc/gosa-si/client.conf";
155 if(! -r $cfg_file) {
156 $err_config = "please specify a config file";
157 $err_counter += 1;
158 }
159 }
160 if( $err_counter > 0 ) {
161 &usage( "", 1 );
162 if( defined( $err_config)) { print STDERR "$err_config\n"}
163 print STDERR "\n";
164 exit( -1 );
165 }
166 }
169 #=== FUNCTION ================================================================
170 # NAME: check_pid
171 # PARAMETERS:
172 # RETURNS:
173 # DESCRIPTION:
174 #===============================================================================
175 sub check_pid {
176 $pid = -1;
177 # Check, if we are already running
178 if( open(LOCK_FILE, "<$pid_file") ) {
179 $pid = <LOCK_FILE>;
180 if( defined $pid ) {
181 chomp( $pid );
182 if( -f "/proc/$pid/stat" ) {
183 my($stat) = `cat /proc/$pid/stat` =~ m/$pid \((.+)\).*/;
184 if( $0 eq $stat ) {
185 close( LOCK_FILE );
186 exit -1;
187 }
188 }
189 }
190 close( LOCK_FILE );
191 unlink( $pid_file );
192 }
194 # create a syslog msg if it is not to possible to open PID file
195 if (not sysopen(LOCK_FILE, $pid_file, O_WRONLY|O_CREAT|O_EXCL, 0644)) {
196 my($msg) = "Couldn't obtain lockfile '$pid_file' ";
197 if (open(LOCK_FILE, '<', $pid_file)
198 && ($pid = <LOCK_FILE>))
199 {
200 chomp($pid);
201 $msg .= "(PID $pid)\n";
202 } else {
203 $msg .= "(unable to read PID)\n";
204 }
205 if( ! ($foreground) ) {
206 openlog( $0, "cons,pid", "daemon" );
207 syslog( "warning", $msg );
208 closelog();
209 }
210 else {
211 print( STDERR " $msg " );
212 }
213 exit( -1 );
214 }
215 }
218 sub sig_int_handler {
219 my ($signal) = @_;
221 daemon_log("shutting down gosa-si-client", 1);
222 system("kill `ps -C gosa-si-client -o pid=`");
223 }
224 $SIG{INT} = \&sig_int_handler;
227 #=== FUNCTION ================================================================
228 # NAME: logging
229 # PARAMETERS: level - string - default 'info'
230 # msg - string -
231 # facility - string - default 'LOG_DAEMON'
232 # RETURNS:
233 # DESCRIPTION:
234 #===============================================================================
235 sub daemon_log {
236 # log into log_file
237 my( $msg, $level ) = @_;
238 if(not defined $msg) { return }
239 if(not defined $level) { $level = 1 }
240 if(defined $log_file){
241 my $open_log_fh = sysopen(LOG_HANDLE, $log_file, O_WRONLY | O_CREAT | O_APPEND , 0440);
242 if(not $open_log_fh) {
243 print STDERR "cannot open $log_file: $!";
244 return;
245 }
246 # check owner and group of log_file and update settings if necessary
247 my ($dev, $ino, $mode, $nlink, $uid, $gid, $rdev, $size, $atime, $mtime, $ctime, $blksize, $blocks) = stat($log_file);
248 if((not $uid eq $root_uid) || (not $gid eq $adm_gid)) {
249 chown($root_uid, $adm_gid, $log_file);
250 }
252 chomp($msg);
253 if($level <= $verbose){
254 my ($seconds, $minutes, $hours, $monthday, $month,
255 $year, $weekday, $yearday, $sommertime) = localtime(time);
256 $hours = $hours < 10 ? $hours = "0".$hours : $hours;
257 $minutes = $minutes < 10 ? $minutes = "0".$minutes : $minutes;
258 $seconds = $seconds < 10 ? $seconds = "0".$seconds : $seconds;
259 my @monthnames = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
260 $month = $monthnames[$month];
261 $monthday = $monthday < 10 ? $monthday = "0".$monthday : $monthday;
262 $year+=1900;
264 my $log_msg = "$month $monthday $hours:$minutes:$seconds $prg $msg\n";
265 print LOG_HANDLE $log_msg;
266 if( $foreground ) {
267 print STDERR $log_msg;
268 }
269 }
270 close( LOG_HANDLE );
271 }
272 }
275 #=== FUNCTION ================================================================
276 # NAME: get_mac
277 # PARAMETERS: interface name (i.e. eth0)
278 # RETURNS: (mac address)
279 # DESCRIPTION: Uses ioctl to get mac address directly from system.
280 #===============================================================================
281 sub get_mac {
282 my $ifreq= shift;
283 my $result;
284 if ($ifreq && length($ifreq) > 0) {
285 if($ifreq eq "all") {
286 if(defined($server_ip)) {
287 $result = &get_local_mac_for_remote_ip($server_ip);
288 }
289 elsif ($client_mac_address && length($client_mac_address) > 0 && !($client_mac_address eq "00:00:00:00:00:00")){
290 $result = &client_mac_address;
291 }
292 else {
293 $result = "00:00:00:00:00:00";
294 }
295 } else {
296 my $SIOCGIFHWADDR= 0x8927; # man 2 ioctl_list
298 # A configured MAC Address should always override a guessed value
299 if ($client_mac_address and length($client_mac_address) > 0 and not($client_mac_address eq "00:00:00:00:00:00")) {
300 $result= $client_mac_address;
301 }
302 else {
303 socket SOCKET, PF_INET, SOCK_DGRAM, getprotobyname('ip')
304 or die "socket: $!";
306 if(ioctl SOCKET, $SIOCGIFHWADDR, $ifreq) {
307 my ($if, $mac)= unpack 'h36 H12', $ifreq;
309 if (length($mac) > 0) {
310 $mac=~ m/^([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])$/;
311 $mac= sprintf("%s:%s:%s:%s:%s:%s", $1, $2, $3, $4, $5, $6);
312 $result = $mac;
313 }
314 }
315 }
316 }
317 }
318 return $result;
319 }
323 #=== FUNCTION ================================================================
324 # NAME: get_local_mac_for_remote_ip
325 # PARAMETERS: none (takes server_ip from global variable)
326 # RETURNS: (ip address from interface that is used for communication)
327 # DESCRIPTION: Uses ioctl to get routing table from system, checks which entry
328 # matches (defaultroute last).
329 #===============================================================================
330 sub get_local_mac_for_remote_ip {
331 my $server_ip= shift;
332 my $result= "00:00:00:00:00:00";
334 if($server_ip =~ /^[a-z][a-z0-9\.]+/i) {
335 my $ip_address = inet_ntoa(scalar gethostbyname($server_ip));
336 if(defined($ip_address) && $ip_address =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}/) {
337 # Write ip address to $server_ip variable
338 $server_ip = $ip_address;
339 }
340 }
342 if($server_ip =~ /^(\d\d?\d?\.){3}\d\d?\d?$/) {
343 my $PROC_NET_ROUTE= ('/proc/net/route');
345 open(PROC_NET_ROUTE, "<$PROC_NET_ROUTE")
346 or die "Could not open $PROC_NET_ROUTE";
348 my @ifs = <PROC_NET_ROUTE>;
350 close(PROC_NET_ROUTE);
352 # Eat header line
353 shift @ifs;
354 chomp @ifs;
355 foreach my $line(@ifs) {
356 my ($Iface,$Destination,$Gateway,$Flags,$RefCnt,$Use,$Metric,$Mask,$MTU,$Window,$IRTT)=split(/\s/, $line);
357 my $destination;
358 my $mask;
359 my ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Destination);
360 $destination= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
361 ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Mask);
362 $mask= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
363 if(new NetAddr::IP($server_ip)->within(new NetAddr::IP($destination, $mask))) {
364 # destination matches route, save mac and exit
365 $result= &get_mac($Iface);
366 last;
367 }
368 }
369 } else {
370 daemon_log("get_local_mac_for_remote_ip was called with a non-ip parameter: $server_ip", 1);
371 }
372 return $result;
373 }
376 sub generate_hw_digest {
377 my $hw_data;
378 foreach my $line (split /\n/, `cat /proc/bus/pci/devices`) {
379 $hw_data.= sprintf "%s", $line =~ /[^\s]+\s([^\s]+)\s.*/;
380 }
381 return(md5_base64($hw_data));
382 }
385 sub create_ciphering {
386 my ($passwd) = @_;
387 if((!defined($passwd)) || length($passwd)==0) {
388 $passwd = "";
389 }
390 $passwd = substr(md5_hex("$passwd") x 32, 0, 32);
391 my $iv = substr(md5_hex('GONICUS GmbH'),0, 16);
392 my $my_cipher = Crypt::Rijndael->new($passwd , Crypt::Rijndael::MODE_CBC());
393 $my_cipher->set_iv($iv);
394 return $my_cipher;
395 }
398 sub encrypt_msg {
399 my ($msg, $key) = @_;
400 my $my_cipher = &create_ciphering($key);
401 my $len;
402 {
403 use bytes;
404 $len= 16-length($msg)%16;
405 }
406 $msg = "\0"x($len).$msg;
407 $msg = $my_cipher->encrypt($msg);
408 chomp($msg = &encode_base64($msg));
409 # there are no newlines allowed inside msg
410 $msg=~ s/\n//g;
411 return $msg;
412 }
415 sub decrypt_msg {
417 my ($msg, $key) = @_ ;
418 $msg = &decode_base64($msg);
419 my $my_cipher = &create_ciphering($key);
420 $msg = $my_cipher->decrypt($msg);
421 $msg =~ s/\0*//g;
422 return $msg;
423 }
426 #=== FUNCTION ================================================================
427 # NAME: send_msg_hash_to_target
428 # PARAMETERS: msg_hash - hash - xml_hash created with function create_xml_hash
429 # PeerAddr string - socket address to send msg
430 # PeerPort string - socket port, if not included in socket address
431 # RETURNS: nothing
432 # DESCRIPTION: ????
433 #===============================================================================
434 sub send_msg_hash_to_target {
435 my ($msg_hash, $address, $encrypt_key) = @_ ;
436 my $msg = &create_xml_string($msg_hash);
437 my $header = @{$msg_hash->{'header'}}[0];
438 my $error = &send_msg_to_target($msg, $address, $encrypt_key, $header);
440 return $error;
441 }
444 sub send_msg_to_target {
445 my ($msg, $address, $encrypt_key, $msg_header) = @_ ;
446 my $error = 0;
448 if( $msg_header ) { $msg_header = "'$msg_header'-"; }
449 else { $msg_header = ""; }
451 # Memorize own source address
452 $msg =~ /<source>(\S+)<\/source>/;
453 my $own_source_address = $1;
455 # encrypt xml msg
456 my $crypted_msg = &encrypt_msg($msg, $encrypt_key);
458 # opensocket
459 my $socket = &open_socket($address);
460 if( !$socket ) {
461 daemon_log("WARNING: cannot send ".$msg_header."msg to '$address', host not reachable", 3);
462 if ($REGISTERED == 1) {
463 $REGISTERED = 0; # if server is not available, cause reregistering
464 daemon_log("INFO: cause reregistering at gosa-si-server", 5);
465 $global_kernel->yield('register_at_gosa_si_server');
467 }
468 $error++;
469 }
471 # send xml msg
472 if( $error == 0 ) {
473 print $socket $crypted_msg.";$own_source_address\n";
474 daemon_log("INFO: send ".$msg_header."msg to $address", 5);
475 daemon_log("DEBUG: message:\n$msg", 9);
476 }
478 # close socket in any case
479 if( $socket ) {
480 close $socket;
481 }
483 return $error;
484 }
487 sub write_to_file {
488 my ($string, $file) = @_;
489 my $error = 0;
491 if( not defined $file || not -f $file ) {
492 &main::daemon_log("ERROR: $prg: check '-f file' failed: $file", 1);
493 $error++;
494 }
495 if( not defined $string || 0 == length($string)) {
496 &main::daemon_log("ERROR: $prg: empty string to write to file '$file'", 1);
497 $error++;
498 }
500 if( $error == 0 ) {
502 chomp($string);
504 if (open(FILE, ">> $file")){
505 print FILE $string."\n";
506 close(FILE);
507 }
508 }
510 return;
511 }
514 sub open_socket {
515 my ($PeerAddr, $PeerPort) = @_ ;
516 if(defined($PeerPort)){
517 $PeerAddr = $PeerAddr.":".$PeerPort;
518 }
519 my $socket;
520 $socket = new IO::Socket::INET(PeerAddr => $PeerAddr,
521 Porto => "tcp",
522 Type => SOCK_STREAM,
523 Timeout => 5,
524 );
525 if(not defined $socket) {
526 return;
527 }
528 &daemon_log("DEBUG: open_socket: $PeerAddr", 7);
529 return $socket;
530 }
533 #=== FUNCTION ================================================================
534 # NAME: register_at_server
535 # PARAMETERS:
536 # RETURNS:
537 # DESCRIPTION:
538 #===============================================================================
539 sub register_at_gosa_si_server {
540 my ($kernel) = $_[KERNEL];
541 my $try_to_register = 0;
543 # if client is already registered, stop registration process
544 if ($REGISTERED) {
545 $kernel->delay('register_at_gosa_si_server');
547 # client is not registered, start registration process
548 } else {
549 # clear all other triggered events and wait till registration was successful
550 $kernel->delay('trigger_new_key');
552 # create new passwd and ciphering object for client-server communication
553 $server_key = &create_passwd();
555 my $events = join( ",", keys %{$event_hash} );
556 while(1) {
557 $try_to_register++;
559 # after one complete round through all server, stop trying to register
560 if( $try_to_register > @servers ) { last; }
562 # fetch first gosa-si-server from @servers
563 # append shifted gosa-si-server at the end of @servers, so looking for servers never stop if
564 # a registration never occured
565 my $server = shift(@servers);
566 push( @servers, $server );
568 # Check if our ip is resolvable - if not: don't try to register
569 if(!(defined($server) && $server =~ m/^[0-9\.]*?:.*$/)) {
570 &main::daemon_log("ERROR: Server with address '".defined($server)?$server:""."' is invalid!", 1);
571 if (length(@servers) == 1) {
572 &main::daemon_log("ERROR: No valid servers found!", 1);
573 exit(1);
574 }
575 }
577 # Check if our ip is resolvable - if not: don't try to register
578 my $ip= &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
579 my $dnsname= gethostbyaddr(inet_aton($ip), AF_INET);
580 if(!defined($dnsname)) {
581 if( defined($client_force_hostname) && $client_force_hostname eq "true") {
582 $dnsname = `hostname`;
583 } else {
584 &write_to_file("goto-error-dns:$ip", $fai_logpath);
585 &main::daemon_log("ERROR: ip is not resolvable, no registration possible. Write 'goto-error-dns:$ip' to $fai_logpath", 1);
586 exit(1);
587 }
588 }
590 # create registration msg
591 my $local_ip = &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
592 my $local_mac = &get_local_mac_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
593 my $register_hash = &create_xml_hash("here_i_am", $local_ip.":".$client_port, $server);
594 &add_content2xml_hash($register_hash, "new_passwd", $server_key);
595 &add_content2xml_hash($register_hash, "mac_address", $local_mac);
596 &add_content2xml_hash($register_hash, "events", $events);
597 &add_content2xml_hash($register_hash, "client_status", $client_status);
598 &add_content2xml_hash($register_hash, "client_revision", $client_revision);
599 &add_content2xml_hash($register_hash, "gotoHardwareChecksum", $gotoHardwareChecksum);
600 &add_content2xml_hash($register_hash, "key_lifetime", $server_key_lifetime);
602 # Add $HOSTNAME from ENV if force-hostname is set
603 if( defined($client_force_hostname) && $client_force_hostname eq "true") {
604 if(defined($ENV{HOSTNAME}) && length($ENV{HOSTNAME}) >0 ) {
605 &add_content2xml_hash($register_hash, "force-hostname", $ENV{HOSTNAME});
606 } else {
607 &main::daemon_log("force-hostname was set to true, but no \$HOSTNAME was found in Environment!",0);
608 }
609 }
611 # send xml hash to server with general server passwd
612 my $res = &send_msg_hash_to_target($register_hash, $server, $default_server_key);
614 # if delivery of registration msg succeed
615 if($res eq "0") {
616 # reset try_to_register
617 $try_to_register = 0;
619 # Set fixed client address and mac address
620 $client_ip= &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
621 $client_address= "$client_ip:$client_port";
622 $client_mac_address = $local_mac;
623 $client_dnsname = $dnsname;
624 last;
626 # delivery of registration msg failed
627 } else {
628 # wait 1 sec until trying to register again
629 sleep(1);
630 next;
631 }
633 } # end of while
634 # one circle through all servers finished and no registration succeed
635 if ( $try_to_register >= @servers ) {
636 &write_to_file("gosa-si-no-server-available", $fai_logpath);
637 $kernel->delay_set('register_at_gosa_si_server', $delay_set_time);
639 # delivery of registraion msg succeed, waiting for server response
640 } else {
641 daemon_log("INFO: waiting for msg 'register_at_gosa_si_server'",5);
642 $kernel->delay_set('register_at_gosa_si_server', $delay_set_time);
643 # clear old settings and set it again
644 $kernel->delay('trigger_new_key');
645 $kernel->delay_set('trigger_new_key', $server_key_lifetime);
646 }
648 }
649 return;
650 }
653 sub check_key_and_xml_validity {
654 my ($crypted_msg, $module_key) = @_;
656 my $msg;
657 my $msg_hash;
658 eval{
659 $msg = &decrypt_msg($crypted_msg, $module_key);
660 &main::daemon_log("decrypted_msg: \n$msg", 9);
662 $msg_hash = $xml->XMLin($msg, ForceArray=>1);
664 ##############
665 # check header
666 my $header_l = $msg_hash->{'header'};
667 if( 1 != @{$header_l} ) {
668 die 'no or more headers specified';
669 }
670 my $header = @{$header_l}[0];
671 if( 0 == length $header) {
672 die 'header has length 0';
673 }
675 ##############
676 # check source
677 my $source_l = $msg_hash->{'source'};
678 if( 1 != @{$source_l} ) {
679 die 'no or more than 1 sources specified';
680 }
681 my $source = @{$source_l}[0];
682 if( 0 == length $source) {
683 die 'source has length 0';
684 }
685 unless( $source =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ) {
686 die "source '$source' is neither a complete ip-address with port nor 'GOSA'";
687 }
689 ##############
690 # check target
691 my $target_l = $msg_hash->{'target'};
692 if( 1 != @{$target_l} ) {
693 die 'no or more than 1 targets specified ';
694 }
695 my $target = @{$target_l}[0];
696 if( 0 == length $target) {
697 die 'target has length 0 ';
698 }
699 unless( $target =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ){
700 die "source is neither a complete ip-address with port nor 'GOSA'";
701 }
702 };
703 if($@) {
704 &main::daemon_log("WARNING: do not understand the message or msg is not gosa-si envelope conform:", 5);
705 &main::daemon_log("$@", 8);
706 $msg = undef;
707 $msg_hash = undef;
708 }
710 return ($msg, $msg_hash);
711 }
714 sub check_outgoing_xml_validity {
715 my ($msg) = @_;
717 my $msg_hash;
718 eval{
719 $msg_hash = $xml->XMLin($msg, ForceArray=>1);
721 ##############
722 # check header
723 my $header_l = $msg_hash->{'header'};
724 if( 1 != @{$header_l} ) {
725 die 'no or more than one headers specified';
726 }
727 my $header = @{$header_l}[0];
728 if( 0 == length $header) {
729 die 'header has length 0';
730 }
732 ##############
733 # check source
734 my $source_l = $msg_hash->{'source'};
735 if( 1 != @{$source_l} ) {
736 die 'no or more than 1 sources specified';
737 }
738 my $source = @{$source_l}[0];
739 if( 0 == length $source) {
740 die 'source has length 0';
741 }
742 unless( $source =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ||
743 $source =~ /^GOSA$/i ) {
744 die "source '$source' is neither a complete ip-address with port";
745 }
747 ##############
748 # check target
749 my $target_l = $msg_hash->{'target'};
750 if( 1 != @{$target_l} ) {
751 die "no or more than one targets specified";
752 }
753 foreach my $target (@$target_l) {
754 if( 0 == length $target) {
755 die "target has length 0";
756 }
757 unless( $target =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ) {
758 die "target '$target' is not a complete ip-address with port or a valid target name";
759 }
760 }
761 };
762 if($@) {
763 daemon_log("WARNING: outgoing msg is not gosa-si envelope conform", 5);
764 daemon_log("$@ $msg", 8);
765 $msg_hash = undef;
766 }
767 return ($msg_hash);
768 }
771 sub trigger_new_key {
772 my ($kernel) = $_[KERNEL] ;
774 my $msg = "<xml><header>new_key</header><source>$client_address</source><target>$client_address</target></xml>";
775 &send_msg_to_target($msg, $client_address, $server_key, 'new_key');
777 $kernel->delay_set('trigger_new_key', $server_key_lifetime);
778 }
781 sub trigger_logged_in_users_report {
782 my ($kernel) = $_[KERNEL] ;
784 # just do if client is registered already
785 if( $REGISTERED ) {
786 my $result = qx(/usr/bin/users);
787 my @logged_in_user_list;
788 if( defined $result ) {
789 chomp($result);
790 @logged_in_user_list = split(/\s/, $result);
791 }
793 system("echo 'CURRENTLY_LOGGED_IN ".join(" ", @logged_in_user_list)."' > /var/run/gosa-si-client.socket");
794 $kernel->delay_set('trigger_logged_in_users_report', $trigger_logged_in_users_report_delay);
795 } else {
796 # try it in 10 sec again
797 $kernel->delay_set('trigger_logged_in_users_report', 10);
798 }
799 }
801 sub trigger_set_terminal_server
802 {
803 # Function is defined in load_reporter.pm
804 if (exists $event_hash->{set_terminal_server})
805 {
806 no strict 'refs';
807 &{$event_hash->{set_terminal_server}."::set_terminal_server"};
808 }
809 else
810 {
811 &daemon_log("0 ERROR: load_reporter.pm needs function set_terminal_server to write terminal server load information to client. Processing aborted!", 1);
812 }
813 return;
814 }
816 sub trigger_seen_messages {
817 my ($kernel) = $_[KERNEL] ;
819 # Select all files under /tmp with prefix 'goto_notify'
820 my $goto_dir = "/tmp";
821 opendir(DIR, $goto_dir);
822 my @goto_files = grep { /^goto_notify_/ && -f "$goto_dir/$_" } readdir(DIR);
823 closedir DIR;
825 # Check if file has 'seen' tag
826 foreach my $goto_file (@goto_files) {
827 open(FILE, "$goto_dir/$goto_file");
828 my @lines = <FILE>;
829 close FILE;
831 my $source;
832 my $target;
833 my $usr;
834 my $subject;
835 my $message;
836 my $seen = 0;
837 chomp(@lines);
838 foreach my $line (@lines) {
839 if ($line =~ /^source:([\S\s]*)$/) {
840 $source = $1
841 }
842 if ($line =~ /^target:([\S\s]*)$/) {
843 $target = $1;
844 }
845 if ($line =~ /^usr:([\S\s]*)$/) {
846 $usr = $1;
847 }
848 if ($line =~ /^subject:([\S\s]*)$/) {
849 $subject = $1;
850 }
851 if ($line =~ /^message:([\S\s]*)$/) {
852 $message = $1;
853 }
854 if ($line =~ /^seen$/) {
855 $seen++;
856 }
857 }
859 # Send 'confirm_usr_msg' back to msg-hosting server
860 if ($seen) {
861 my %data = ('usr'=>$usr, 'subject'=>$subject, 'message'=>$message);
862 my $confirm_msg = &build_msg("confirm_usr_msg", $target, $source, \%data);
863 my $send_error = &send_msg_to_target($confirm_msg, $server_address, $server_key);
865 # Delete file
866 if (not $send_error) {
867 system("rm $goto_dir/$goto_file");
868 }
869 }
870 }
872 $kernel->delay_set('trigger_seen_messages', $trigger_seen_messages_delay);
874 return;
875 }
878 sub generic_file_error {
879 my ( $heap, $operation, $errno, $error_string, $wheel_id ) =
880 @_[ HEAP, ARG0, ARG1, ARG2, ARG3 ];
882 my $service = $heap->{services}->{$wheel_id};
883 daemon_log("ERROR: '$service' watcher $operation error $errno: $error_string", 1);
884 daemon_log("ERROR: shutting down '$service' file watcher", 1);
886 delete $heap->{services}->{$wheel_id};
887 delete $heap->{watchers}->{$wheel_id};
888 return;
889 }
892 sub fai_fifo_got_record {
893 my $file_record = $_[ARG0];
894 my $header;
895 my $content = "";
896 daemon_log("DEBUG: fifo got record: $file_record", 7);
898 $file_record =~ /^(\S+)[ ]?([\s\S]+)?$/;
899 if( defined $1 ) {
900 $header = $1;
901 } else {
902 return;
903 }
905 if( defined $2 ) {
906 $content = $2;
907 }
909 my $clmsg_hash = &create_xml_hash("CLMSG_$header", $client_address, $server_address, $content);
910 &add_content2xml_hash($clmsg_hash, "macaddress", $client_mac_address);
911 my $utc_ts = &main::get_utc_time();
912 &add_content2xml_hash($clmsg_hash, "timestamp", $utc_ts);
913 my $clmsg = &create_xml_string($clmsg_hash);
914 &send_msg_to_target($clmsg, $server_address, $server_key, "CLMSG_$header");
916 # if installation finished, save all log files
917 if ($file_record eq "TASKBEGIN finish") {
918 &save_fai_log($fai_log_dir);
919 }
921 return;
922 }
925 sub system_fifo_got_record {
926 my ($kernel, $socket_com_record) = @_[KERNEL, ARG0];
927 $socket_com_record =~ /^(\S+)\s?([\s\S]*)$/;
928 my $function = $1;
929 my $content = $2;
931 if( exists $event_hash->{$function} )
932 {
933 # a event exists with the header as name
934 daemon_log("INFO: found event '$function' at event-module '".$event_hash->{$function}."'", 5);
935 no strict 'refs';
936 my $answer = &{$event_hash->{$function}."::$function"}($content, $kernel);
937 &post_processing_and_sending($answer)
938 }
939 else
940 {
941 daemon_log("ERROR: Got input '$socket_com_record' from socket '$system_com_fifo'", 1);
942 daemon_log("ERROR: No event '$function' found in event modules under '$event_dir'.", 1);
943 }
945 # # Sanity check of fifo record
946 #
947 # # Create record message
948 # my $lr_msg_hash = &create_xml_hash("load_report", $client_address, $server_address, $file_record);
949 # &add_content2xml_hash($lr_msg_hash, "macaddress", $client_mac_address);
950 # my $utc_ts = &main::get_utc_time();
951 # &add_content2xml_hash($lr_msg_hash, "timestamp", $utc_ts);
952 # my $lr_msg = &create_xml_string($lr_msg_hash);
953 #
954 # # Report message to si-server
955 # &send_msg_to_target($lr_msg, $server_address, $server_key, "load_report");
957 return;
958 }
961 sub save_fai_log {
962 my ($fai_log_dir) = @_ ;
963 my $FAI_DIR;
965 # Directory for log files after a softupdate
966 my $log_dir = File::Spec->catdir($fai_log_dir, "localhost/last");
968 if (not -d $log_dir) {
969 # Directory for log files after a new installation
970 $log_dir = "/tmp/fai";
971 if (not -d $log_dir) {
972 daemon_log("ERROR: cannot open directory $log_dir", 1);
973 return;
974 }
975 }
977 opendir($FAI_DIR, "$log_dir");
978 my @log_files = readdir($FAI_DIR);
979 closedir($FAI_DIR);
981 my @log_list;
982 foreach my $log_file (@log_files) {
983 if( $log_file eq "." || $log_file eq ".." ) { next; }
985 my $log = "log_file:$log_file:";
986 $log_file = File::Spec->catfile( $log_dir, $log_file );
988 if (not -f $log_file) {
989 daemon_log("ERROR: cannot read $log_file", 1);
990 next;
991 }
993 open(FILE, "<$log_file");
994 my @lines = <FILE> ;
995 close (FILE);
996 my $log_string = join("", @lines);
997 $log .= &encode_base64($log_string);
998 push(@log_list, $log);
999 }
1001 my $all_log_string = join("\n", @log_list);
1002 my $msg_hash = &create_xml_hash("CLMSG_save_fai_log", $client_address, $server_address, $all_log_string);
1003 &add_content2xml_hash($msg_hash, "macaddress", $client_mac_address);
1004 my $msg = &create_xml_string($msg_hash);
1005 &send_msg_to_target($msg, $server_address, $server_key, "CLMSG_save_fai_log");
1007 }
1010 sub sig_handler {
1011 my ($kernel, $signal) = @_[KERNEL, ARG0] ;
1012 daemon_log("0 INFO got signal '$signal'", 1);
1013 $kernel->sig_handled();
1014 return;
1015 }
1018 sub _start {
1019 my ($kernel, $heap) = @_[KERNEL, HEAP];
1020 $kernel->alias_set('client_session');
1021 $global_kernel = $kernel; # this is used to throw events at each point of the skript
1023 $kernel->sig(USR1 => "sig_handler");
1025 # force a registration at a gosa-si-server
1026 $kernel->yield('register_at_gosa_si_server');
1028 # install all file watcher defined
1029 while( my($name, $file) = each %files_to_watch ) {
1030 my $watcher = POE::Wheel::FollowTail->new(
1031 Filename => $file,
1032 InputEvent => $name."_record",
1033 ErrorEvent => "file_error",
1034 );
1035 $heap->{services}->{ $watcher->ID } = $name;
1036 $heap->{watchers}->{ $watcher->ID } = $watcher;
1037 }
1038 $kernel->yield('trigger_logged_in_users_report');
1039 $kernel->yield('trigger_seen_messages');
1040 }
1043 sub _default {
1044 daemon_log("ERROR: can not handle incoming msg with header '$_[ARG0]'", 1);
1045 return;
1046 }
1049 sub server_input {
1050 my ($kernel, $heap, $input, $wheel) = @_[KERNEL, HEAP, ARG0, ARG1];
1051 my $remote_ip = $heap->{'remote_ip'},
1052 my $error = 0;
1053 my $answer;
1055 daemon_log("INFO: Incoming msg from '$remote_ip'", 5);
1056 daemon_log("DEBUG: Incoming msg:\n$input\n", 9);
1058 # Cut of ip and port from msgs tail
1059 my ($encrypted_msg, $msg_source) = split(/;/, $input);
1061 my ($msg, $msg_hash) = &check_key_and_xml_validity($encrypted_msg, $server_key);
1062 if( (!$msg) || (!$msg_hash) ) {
1063 daemon_log("WARNING: Deciphering of incoming msg failed", 3);
1064 if($server_address =~ /$remote_ip/) {
1065 # got a msg from gosa-si-server which can not be decrypted, may the secrete not up-to-date
1066 # cause a reregistering with a new secrete handshake
1067 daemon_log("WARNING: Message from gosa-si-server could not be understood, cause reregistering at server", 3);
1069 # if client is alread in a registration process, that means not registered, do nothing
1070 # if not, cause re-registration
1071 if (not $REGISTERED) {
1072 &daemon_log("WARNING: gosa-si-client is already in a registration process so ignore this message", 3);
1073 } else {
1074 $REGISTERED = 0;
1075 $kernel->post('client_session', 'register_at_gosa_si_server');
1076 }
1077 }
1078 $error++;
1079 }
1082 ######################
1083 # process incoming msg
1084 if( $error == 0 ) {
1085 my $header = @{$msg_hash->{header}}[0];
1086 my $source = @{$msg_hash->{source}}[0];
1088 if( exists $event_hash->{$header} ) {
1090 # a event exists with the header as name
1091 daemon_log("INFO: found event '$header' at event-module '".$event_hash->{$header}."'", 5);
1092 no strict 'refs';
1093 $answer = &{$event_hash->{$header}."::$header"}($msg, $msg_hash);
1094 }
1095 else {
1096 daemon_log("WARNING: no event '$header' found in event modules under $event_dir", 3);
1097 }
1098 }
1100 ########
1101 # answer
1102 &post_processing_and_sending($answer);
1104 return;
1105 }
1107 sub post_processing_and_sending
1108 {
1109 my ($answer) = @_ ;
1111 # Do nothing if answer does not exists
1112 if (not defined $answer) { return; }
1114 # Check gosa-si envelope validity
1115 my $answer_hash = &check_outgoing_xml_validity($answer);
1117 if( $answer_hash )
1118 {
1119 # Answer is valid
1120 # Pre-sending
1121 if( $answer =~ "<header>registered</header>")
1122 {
1123 # Set registered flag to true to stop sending further registered msgs
1124 $REGISTERED = 1;
1125 }
1126 else
1127 {
1128 $answer =~ /<header>(\S+)<\/header>/;
1129 &send_msg_to_target($answer, $server_address, $server_key, $1);
1130 }
1132 # Post-sending
1133 if( $answer =~ "<header>new_key</header>")
1134 {
1135 # Set new key to global variable
1136 $answer =~ /<new_key>(\S*?)<\/new_key>/;
1137 my $new_key = $1;
1138 $server_key = $new_key;
1139 }
1140 }
1142 return;
1143 }
1146 #==== MAIN = main ==============================================================
1147 # parse commandline options
1148 Getopt::Long::Configure( "bundling" );
1149 GetOptions("h|help" => \&usage,
1150 "c|config=s" => \$cfg_file,
1151 "f|foreground" => \$foreground,
1152 "v|verbose+" => \$verbose,
1153 );
1155 # read and set config parameters
1156 &check_cmdline_param ;
1157 &read_configfile($cfg_file, %cfg_defaults);
1158 &check_pid;
1161 # forward error messages to logfile
1162 if ( ! $foreground ) {
1163 open( STDIN, '+>/dev/null' );
1164 open( STDOUT, '+>&STDIN' );
1165 open( STDERR, '+>&STDIN' );
1166 }
1168 # Just fork, if we are not in foreground mode
1169 if( ! $foreground ) {
1170 chdir '/' or die "Can't chdir to /: $!";
1171 $pid = fork;
1172 setsid or die "Can't start a new session: $!";
1173 umask 0;
1174 } else {
1175 $pid = $$;
1176 }
1178 # Do something useful - put our PID into the pid_file
1179 if( 0 != $pid ) {
1180 open( LOCK_FILE, ">$pid_file" );
1181 print LOCK_FILE "$pid\n";
1182 close( LOCK_FILE );
1183 if( !$foreground ) {
1184 exit( 0 )
1185 };
1186 }
1188 # parse head url and revision from svn
1189 my $client_status_hash = { 'developmental'=>'revision', 'stable'=>'release'};
1190 $client_version =~ /^\$HeadURL: (\S+) \$:\$Rev: (\d+) \$$/;
1191 $client_headURL = defined $1 ? $1 : 'unknown' ;
1192 $client_revision = defined $2 ? $2 : 'unknown' ;
1193 if ($client_headURL =~ /\/tag\// ||
1194 $client_headURL =~ /\/branches\// ) {
1195 $client_status = "stable";
1196 } else {
1197 $client_status = "developmental" ;
1198 }
1200 # Determine root uid and adm gid, used for creating log files
1201 $root_uid = getpwnam('root');
1202 $adm_gid = getgrnam('adm');
1203 if(not defined $adm_gid){
1204 $adm_gid = getgrnam('root');
1205 }
1207 daemon_log(" ", 1);
1208 daemon_log("$prg started!", 1);
1209 daemon_log("INFO: status: $client_status", 1);
1210 daemon_log("INFO: ".$client_status_hash->{$client_status}.": $client_revision", 1);
1212 # delete old DBsqlite lock files
1213 system('rm -f /tmp/gosa_si_lock*gosa-si-client*');
1215 # detect ip and mac address and complete host address
1216 $client_address = $client_ip.":".$client_port;
1217 my $network_interface= &get_interface_for_ip($client_ip);
1218 $client_mac_address= &get_mac($network_interface);
1219 daemon_log("INFO: ip address detected: $client_ip", 1);
1220 daemon_log("INFO: gosa-si-client mac address detected: $client_mac_address", 1);
1223 # import events
1224 my ($error, $result, $tmp_hash) = &import_events($event_dir);
1225 while (my ($module, $mod_event_hash) = each %$tmp_hash) {
1226 while (my ($event_name, $nothing) = each %$mod_event_hash) {
1227 $event_hash->{$event_name} = $module;
1228 }
1229 }
1231 foreach my $log_line (@$result) {
1232 if ($log_line =~ / succeed: /) {
1233 &main::daemon_log("0 DEBUG: $log_line", 7);
1234 } else {
1235 &main::daemon_log("0 ERROR: $log_line", 1);
1236 }
1237 }
1240 # compute hardware checksum
1241 $gotoHardwareChecksum= &generate_hw_digest();
1242 daemon_log("INFO: gotoHardwareChecksum detected: $gotoHardwareChecksum", 1);
1245 # create socket for incoming xml messages
1246 POE::Component::Server::TCP->new(
1247 Alias => 'gosa-si-client',
1248 Port => $client_port,
1249 ClientInput => \&server_input,
1250 );
1251 daemon_log("INFO: start socket for incoming xml messages at port '$client_port' ", 1);
1254 # prepare variables
1255 if( inet_aton($server_ip) ){ $server_ip = inet_ntoa(inet_aton($server_ip)); }
1256 if (defined $server_ip && defined $server_port) {
1257 $server_address = $server_ip.":".$server_port;
1258 }
1259 $xml = new XML::Simple();
1260 $default_server_key = $server_key;
1263 # add gosa-si-server address from config file at first position of server list
1264 my $server_check_cfg = Config::IniFiles->new( -file => $cfg_file );
1265 my $server_check = (defined($server_check_cfg))?$server_check_cfg->val( "server", "ip"):undef;
1266 if( defined $server_check ) {
1267 unshift(@servers, $server_address);
1268 my $servers_string = join(", ", @servers);
1269 daemon_log("INFO: found servers in configuration file: $servers_string", 1);
1270 } else {
1271 my @tmp_servers;
1272 if ( !$server_domain) {
1273 # Try our DNS Searchlist
1274 my @domain_list = &get_dns_domains();
1275 my $tmp_domains;
1276 my $error_string;
1277 for my $domain (@domain_list) {
1278 chomp($domain);
1279 ($tmp_domains, $error_string) = &get_server_addresses($domain);
1280 if(@$tmp_domains) {
1281 for my $tmp_server(@$tmp_domains) {
1282 push @tmp_servers, $tmp_server;
1283 }
1284 }
1285 }
1286 if (0 == @tmp_servers) {
1287 my $log_string = "no gosa-si-server found!";
1288 $log_string .= "\n\tdetermined domains out of /etc/resolv.conf: ".join(", ", @domain_list) if (@domain_list);
1289 $log_string .= "\n\tdetermined server addresses in domains: ".join(", ",@$tmp_domains) if (defined($tmp_domains));
1290 daemon_log("ERROR: $log_string", 1) if (defined($log_string));
1291 daemon_log("ERROR: $error_string", 1) if (defined($error_string));
1292 daemon_log("ERROR: please specify a gosa-si-server address or a domain in config file", 1);
1293 kill 2, $$;
1294 }
1295 } else {
1296 @tmp_servers = &get_server_addresses($server_domain);
1297 if( 0 == @tmp_servers ) {
1298 daemon_log("ERROR: no gosa-si-server found in DNS for domain '$server_domain'",1);
1299 daemon_log("ERROR: please specify a gosa-si-server address or a domain in config file", 1);
1300 kill 2, $$;
1301 }
1302 }
1304 foreach my $server (@tmp_servers) {
1305 unshift(@servers, $server);
1306 }
1307 my $servers_string = join(", ", @servers);
1308 daemon_log("INFO: found servers in DNS: $servers_string", 1);
1309 }
1312 # Open a new fifo for FAI messages to gosa-si-server
1313 if (-p $fai_com_fifo) { unlink $fai_com_fifo }
1314 POSIX::mkfifo("$fai_com_fifo", "0600");
1316 # Open a new fifo for system communication,
1317 if (-p $system_com_fifo) { unlink $system_com_fifo }
1318 if ($system_com eq "enabled")
1319 {
1320 POSIX::mkfifo("$system_com_fifo", "0600");
1321 }
1323 POE::Session->create(
1324 inline_states => {
1325 _start => \&_start,
1326 _default => \&_default,
1327 sig_handler => \&sig_handler,
1328 register_at_gosa_si_server => \®ister_at_gosa_si_server,
1330 # trigger periodical tasks
1331 trigger_new_key => \&trigger_new_key,
1332 trigger_logged_in_users_report => \&trigger_logged_in_users_report,
1333 trigger_seen_messages => \&trigger_seen_messages,
1335 # trigger non periodical tasks
1336 trigger_set_terminal_server => \&trigger_set_terminal_server,
1338 # handle records from each defined file differently
1339 fai_fifo_record => \&fai_fifo_got_record,
1340 system_fifo_record => \&system_fifo_got_record,
1342 # handle file resets and errors the same way for each file
1343 file_reset => \&generic_file_reset,
1344 file_error => \&generic_file_error,
1345 }
1346 );
1348 POE::Kernel->run();
1349 exit;