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 my $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 # Microseconds since epoch
264 my $microSeconds = sprintf("%.2f", &Time::HiRes::clock_gettime());
265 $microSeconds =~ s/^\d*(.\d\d)$/$1/;
268 my $log_msg = "$month $monthday $hours:$minutes:$seconds$microSeconds $prg $msg\n";
269 print LOG_HANDLE $log_msg;
270 if( $foreground ) {
271 print STDERR $log_msg;
272 }
273 }
274 close( LOG_HANDLE );
275 }
276 }
279 #=== FUNCTION ================================================================
280 # NAME: get_mac
281 # PARAMETERS: interface name (i.e. eth0)
282 # RETURNS: (mac address)
283 # DESCRIPTION: Uses ioctl to get mac address directly from system.
284 #===============================================================================
285 sub get_mac {
286 my $ifreq= shift;
287 my $result;
288 if ($ifreq && length($ifreq) > 0) {
289 if($ifreq eq "all") {
290 if(defined($server_ip)) {
291 $result = &get_local_mac_for_remote_ip($server_ip);
292 }
293 elsif ($client_mac_address && length($client_mac_address) > 0 && !($client_mac_address eq "00:00:00:00:00:00")){
294 $result = &client_mac_address;
295 }
296 else {
297 $result = "00:00:00:00:00:00";
298 }
299 } else {
300 my $SIOCGIFHWADDR= 0x8927; # man 2 ioctl_list
302 # A configured MAC Address should always override a guessed value
303 if ($client_mac_address and length($client_mac_address) > 0 and not($client_mac_address eq "00:00:00:00:00:00")) {
304 $result= $client_mac_address;
305 }
306 else {
307 socket SOCKET, PF_INET, SOCK_DGRAM, getprotobyname('ip')
308 or die "socket: $!";
310 if(ioctl SOCKET, $SIOCGIFHWADDR, $ifreq) {
311 my ($if, $mac)= unpack 'h36 H12', $ifreq;
313 if (length($mac) > 0) {
314 $mac=~ m/^([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])$/;
315 $mac= sprintf("%s:%s:%s:%s:%s:%s", $1, $2, $3, $4, $5, $6);
316 $result = $mac;
317 }
318 }
319 }
320 }
321 }
322 return $result;
323 }
327 #=== FUNCTION ================================================================
328 # NAME: get_local_mac_for_remote_ip
329 # PARAMETERS: none (takes server_ip from global variable)
330 # RETURNS: (ip address from interface that is used for communication)
331 # DESCRIPTION: Uses ioctl to get routing table from system, checks which entry
332 # matches (defaultroute last).
333 #===============================================================================
334 sub get_local_mac_for_remote_ip {
335 my $server_ip= shift;
336 my $result= "00:00:00:00:00:00";
338 if($server_ip =~ /^[a-z][a-z0-9\.]+/i) {
339 my $ip_address = inet_ntoa(scalar gethostbyname($server_ip));
340 if(defined($ip_address) && $ip_address =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}/) {
341 # Write ip address to $server_ip variable
342 $server_ip = $ip_address;
343 }
344 }
346 if($server_ip =~ /^(\d\d?\d?\.){3}\d\d?\d?$/) {
347 my $PROC_NET_ROUTE= ('/proc/net/route');
349 open(PROC_NET_ROUTE, "<$PROC_NET_ROUTE")
350 or die "Could not open $PROC_NET_ROUTE";
352 my @ifs = <PROC_NET_ROUTE>;
354 close(PROC_NET_ROUTE);
356 # Eat header line
357 shift @ifs;
358 chomp @ifs;
359 foreach my $line(@ifs) {
360 my ($Iface,$Destination,$Gateway,$Flags,$RefCnt,$Use,$Metric,$Mask,$MTU,$Window,$IRTT)=split(/\s/, $line);
361 my $destination;
362 my $mask;
363 my ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Destination);
364 $destination= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
365 ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Mask);
366 $mask= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
367 if(new NetAddr::IP($server_ip)->within(new NetAddr::IP($destination, $mask))) {
368 # destination matches route, save mac and exit
369 $result= &get_mac($Iface);
370 last;
371 }
372 }
373 } else {
374 daemon_log("get_local_mac_for_remote_ip was called with a non-ip parameter: $server_ip", 1);
375 }
376 return $result;
377 }
380 sub generate_hw_digest {
381 my $hw_data;
382 foreach my $line (split /\n/, `cat /proc/bus/pci/devices`) {
383 $hw_data.= sprintf "%s", $line =~ /[^\s]+\s([^\s]+)\s.*/;
384 }
385 # linux-vserver has no /proc/bus/pci/devices
386 if ( !$hw_data ) {
387 foreach my $line (split /\n/, `ifconfig | grep HWaddr`) {
388 $hw_data.= sprintf "%s", $line =~ /[^\s]+\s([^\s]+)\s.*/;
389 }
390 }
391 return(md5_base64($hw_data));
392 }
395 sub create_ciphering {
396 my ($passwd) = @_;
397 if((!defined($passwd)) || length($passwd)==0) {
398 $passwd = "";
399 }
400 $passwd = substr(md5_hex("$passwd") x 32, 0, 32);
401 my $iv = substr(md5_hex('GONICUS GmbH'),0, 16);
402 my $my_cipher = Crypt::Rijndael->new($passwd , Crypt::Rijndael::MODE_CBC());
403 $my_cipher->set_iv($iv);
404 return $my_cipher;
405 }
408 sub encrypt_msg {
409 my ($msg, $key) = @_;
410 my $my_cipher = &create_ciphering($key);
411 my $len;
412 {
413 use bytes;
414 $len= 16-length($msg)%16;
415 }
416 $msg = "\0"x($len).$msg;
417 $msg = $my_cipher->encrypt($msg);
418 chomp($msg = &encode_base64($msg));
419 # there are no newlines allowed inside msg
420 $msg=~ s/\n//g;
421 return $msg;
422 }
425 sub decrypt_msg {
427 my ($msg, $key) = @_ ;
428 $msg = &decode_base64($msg);
429 my $my_cipher = &create_ciphering($key);
430 $msg = $my_cipher->decrypt($msg);
431 $msg =~ s/\0*//g;
432 return $msg;
433 }
436 #=== FUNCTION ================================================================
437 # NAME: send_msg_hash_to_target
438 # PARAMETERS: msg_hash - hash - xml_hash created with function create_xml_hash
439 # PeerAddr string - socket address to send msg
440 # PeerPort string - socket port, if not included in socket address
441 # RETURNS: nothing
442 # DESCRIPTION: ????
443 #===============================================================================
444 sub send_msg_hash_to_target {
445 my ($msg_hash, $address, $encrypt_key) = @_ ;
446 my $msg = &create_xml_string($msg_hash);
447 my $header = @{$msg_hash->{'header'}}[0];
448 my $error = &send_msg_to_target($msg, $address, $encrypt_key, $header);
450 return $error;
451 }
453 sub _setREGISTERED {
454 my $newStatus = shift;
455 &daemon_log("DEBUG: set REGISTERED flag from '$REGISTERED' to '$newStatus'", 7);
456 $REGISTERED = $newStatus;
457 return;
458 }
460 sub send_msg_to_target {
461 my ($msg, $address, $encrypt_key, $msg_header) = @_ ;
462 my $error = 0;
464 if( $msg_header ) { $msg_header = "'$msg_header'-"; }
465 else { $msg_header = ""; }
467 # Memorize own source address
468 $msg =~ /<source>(\S+)<\/source>/;
469 my $own_source_address = $1;
471 # encrypt xml msg
472 my $crypted_msg = &encrypt_msg($msg, $encrypt_key);
474 # opensocket
475 my $socket = &open_socket($address);
476 if( !$socket ) {
477 daemon_log("WARNING: cannot send ".$msg_header."msg to '$address', host not reachable", 3);
478 if ($REGISTERED == 1) {
479 &_setREGISTERED(0); # if server is not available, cause reregistering
480 daemon_log("INFO: cause reregistering at gosa-si-server", 5);
481 $global_kernel->yield('register_at_gosa_si_server');
483 }
484 $error++;
485 }
487 # send xml msg
488 if( $error == 0 ) {
489 print $socket $crypted_msg.";$own_source_address\n";
490 daemon_log("INFO: send ".$msg_header."msg to $address", 5);
491 daemon_log("DEBUG: message:\n$msg", 9);
492 }
494 # close socket in any case
495 if( $socket ) {
496 close $socket;
497 }
499 return $error;
500 }
503 sub write_to_file {
504 my ($string, $file) = @_;
505 my $error = 0;
507 if( not defined $file || not -f $file ) {
508 &main::daemon_log("ERROR: $prg: check '-f file' failed: $file", 1);
509 $error++;
510 }
511 if( not defined $string || 0 == length($string)) {
512 &main::daemon_log("ERROR: $prg: empty string to write to file '$file'", 1);
513 $error++;
514 }
516 if( $error == 0 ) {
518 chomp($string);
520 if (open(FILE, ">> $file")){
521 print FILE $string."\n";
522 close(FILE);
523 }
524 }
526 return;
527 }
530 sub open_socket {
531 my ($PeerAddr, $PeerPort) = @_ ;
532 if(defined($PeerPort)){
533 $PeerAddr = $PeerAddr.":".$PeerPort;
534 }
535 my $socket;
536 $socket = new IO::Socket::INET(PeerAddr => $PeerAddr,
537 Porto => "tcp",
538 Type => SOCK_STREAM,
539 Timeout => 5,
540 );
541 if(not defined $socket) {
542 return;
543 }
544 &daemon_log("DEBUG: open_socket: $PeerAddr", 7);
545 return $socket;
546 }
549 #=== FUNCTION ================================================================
550 # NAME: register_at_server
551 # PARAMETERS:
552 # RETURNS:
553 # DESCRIPTION:
554 #===============================================================================
555 sub register_at_gosa_si_server {
556 my ($kernel) = $_[KERNEL];
557 my $try_to_register = 0;
559 if ($REGISTERED) {
560 # Client is already registered, clear all other registration events
561 $kernel->delay('register_at_gosa_si_server');
562 } else {
563 # Client is not registered, start registration process
564 # Clear all other events and wait till registration was successful
565 $kernel->delay('register_at_gosa_si_server');
566 $kernel->delay('trigger_new_key');
568 # Create new passwd and ciphering object for client-server communication
569 $server_key = &create_passwd();
571 my $events = join( ",", keys %{$event_hash} );
572 while(1) {
573 $try_to_register++;
575 # after one complete round through all server, stop trying to register
576 if( $try_to_register > @servers ) { last; }
578 # fetch first gosa-si-server from @servers
579 # append shifted gosa-si-server at the end of @servers, so looking for servers never stop if
580 # a registration never occured
581 my $server = shift(@servers);
582 push( @servers, $server );
584 # Check if $server is a valid server address
585 if(!(defined($server) && $server =~ m/^[0-9\.]*?:.*$/)) {
586 &main::daemon_log("ERROR: Server with address '".defined($server)?$server:""."' is invalid!", 1);
587 if (length(@servers) == 1) {
588 &main::daemon_log("ERROR: No valid servers found!", 1);
589 exit(1);
590 }
591 }
593 # Check if our ip is resolvable - if not: don't try to register
594 my $ip= &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
595 my $dnsname= gethostbyaddr(inet_aton($ip), AF_INET);
596 if(!defined($dnsname)) {
597 if( defined($client_force_hostname) && $client_force_hostname eq "true") {
598 $dnsname = `hostname`;
599 } else {
600 &write_to_file("goto-error-dns:$ip", $fai_logpath);
601 &main::daemon_log("ERROR: ip is not resolvable, no registration possible. Write 'goto-error-dns:$ip' to $fai_logpath", 1);
602 exit(1);
603 }
604 }
606 # create registration msg
607 my $local_ip = &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
608 my $local_mac = &get_local_mac_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
609 my $register_hash = &create_xml_hash("here_i_am", $local_ip.":".$client_port, $server);
610 &add_content2xml_hash($register_hash, "new_passwd", $server_key);
611 &add_content2xml_hash($register_hash, "mac_address", $local_mac);
612 &add_content2xml_hash($register_hash, "events", $events);
613 &add_content2xml_hash($register_hash, "client_status", $client_status);
614 &add_content2xml_hash($register_hash, "client_revision", $client_revision);
615 &add_content2xml_hash($register_hash, "gotoHardwareChecksum", $gotoHardwareChecksum);
616 &add_content2xml_hash($register_hash, "key_lifetime", $server_key_lifetime);
618 # Add $HOSTNAME from ENV if force-hostname is set
619 if( defined($client_force_hostname) && $client_force_hostname eq "true") {
620 if(defined($ENV{HOSTNAME}) && length($ENV{HOSTNAME}) >0 ) {
621 &add_content2xml_hash($register_hash, "force-hostname", $ENV{HOSTNAME});
622 } else {
623 &main::daemon_log("force-hostname was set to true, but no \$HOSTNAME was found in Environment!",0);
624 }
625 }
627 # send xml hash to server with general server passwd
628 my $res = &send_msg_hash_to_target($register_hash, $server, $default_server_key);
630 # if delivery of registration msg succeed
631 if($res eq "0") {
632 # reset try_to_register
633 $try_to_register = 0;
635 # Set fixed client address and mac address
636 $client_ip= &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
637 $client_address= "$client_ip:$client_port";
638 $client_mac_address = $local_mac;
639 $client_dnsname = $dnsname;
640 last;
642 # delivery of registration msg failed
643 } else {
644 # wait 1 sec until trying to register again
645 sleep(1);
646 next;
647 }
649 } # end of while
651 if ( $try_to_register >= @servers ) {
652 # One circle through all servers finished and no registration succeed
653 &write_to_file("gosa-si-no-server-available", $fai_logpath);
654 } else {
655 # Delivery of registraion msg succeed, waiting for server response
656 daemon_log("INFO: waiting for msg 'register_at_gosa_si_server'",5);
657 # Clear old settings and set it again
658 $kernel->delay('trigger_new_key');
659 $kernel->delay_set('trigger_new_key', $server_key_lifetime);
660 }
662 # Set waiting time for 'register_at_gosa_si_server'-event
663 $kernel->delay_set('register_at_gosa_si_server', $delay_set_time);
664 }
665 return;
666 }
669 sub check_key_and_xml_validity {
670 my ($crypted_msg, $module_key) = @_;
672 my $msg;
673 my $msg_hash;
674 eval{
675 $msg = &decrypt_msg($crypted_msg, $module_key);
676 &main::daemon_log("decrypted_msg: \n$msg", 9);
678 $msg_hash = $xml->XMLin($msg, ForceArray=>1);
680 ##############
681 # check header
682 my $header_l = $msg_hash->{'header'};
683 if( 1 != @{$header_l} ) {
684 die 'no or more headers specified';
685 }
686 my $header = @{$header_l}[0];
687 if( 0 == length $header) {
688 die 'header has length 0';
689 }
691 ##############
692 # check source
693 my $source_l = $msg_hash->{'source'};
694 if( 1 != @{$source_l} ) {
695 die 'no or more than 1 sources specified';
696 }
697 my $source = @{$source_l}[0];
698 if( 0 == length $source) {
699 die 'source has length 0';
700 }
701 unless( $source =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ) {
702 die "source '$source' is neither a complete ip-address with port nor 'GOSA'";
703 }
705 ##############
706 # check target
707 my $target_l = $msg_hash->{'target'};
708 if( 1 != @{$target_l} ) {
709 die 'no or more than 1 targets specified ';
710 }
711 my $target = @{$target_l}[0];
712 if( 0 == length $target) {
713 die 'target has length 0 ';
714 }
715 unless( $target =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ){
716 die "source is neither a complete ip-address with port nor 'GOSA'";
717 }
718 };
719 if($@) {
720 &main::daemon_log("WARNING: do not understand the message or msg is not gosa-si envelope conform:", 5);
721 &main::daemon_log("$@", 8);
722 $msg = undef;
723 $msg_hash = undef;
724 }
726 return ($msg, $msg_hash);
727 }
730 sub check_outgoing_xml_validity {
731 my ($msg) = @_;
733 my $msg_hash;
734 eval{
735 $msg_hash = $xml->XMLin($msg, ForceArray=>1);
737 ##############
738 # check header
739 my $header_l = $msg_hash->{'header'};
740 if( 1 != @{$header_l} ) {
741 die 'no or more than one headers specified';
742 }
743 my $header = @{$header_l}[0];
744 if( 0 == length $header) {
745 die 'header has length 0';
746 }
748 ##############
749 # check source
750 my $source_l = $msg_hash->{'source'};
751 if( 1 != @{$source_l} ) {
752 die 'no or more than 1 sources specified';
753 }
754 my $source = @{$source_l}[0];
755 if( 0 == length $source) {
756 die 'source has length 0';
757 }
758 unless( $source =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ||
759 $source =~ /^GOSA$/i ) {
760 die "source '$source' is neither a complete ip-address with port";
761 }
763 ##############
764 # check target
765 my $target_l = $msg_hash->{'target'};
766 if( 1 != @{$target_l} ) {
767 die "no or more than one targets specified";
768 }
769 foreach my $target (@$target_l) {
770 if( 0 == length $target) {
771 die "target has length 0";
772 }
773 unless( $target =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ) {
774 die "target '$target' is not a complete ip-address with port or a valid target name";
775 }
776 }
777 };
778 if($@) {
779 daemon_log("WARNING: outgoing msg is not gosa-si envelope conform", 5);
780 daemon_log("$@ $msg", 8);
781 $msg_hash = undef;
782 }
783 return ($msg_hash);
784 }
787 sub trigger_new_key {
788 my ($kernel) = $_[KERNEL] ;
790 my $msg = "<xml><header>new_key</header><source>$client_address</source><target>$client_address</target></xml>";
791 &send_msg_to_target($msg, $client_address, $server_key, 'new_key');
793 $kernel->delay_set('trigger_new_key', $server_key_lifetime);
794 }
797 sub trigger_logged_in_users_report {
798 my ($kernel) = $_[KERNEL] ;
800 # just do if client is registered already
801 if( $REGISTERED ) {
802 my $result = qx(/usr/bin/users);
803 my @logged_in_user_list;
804 if( defined $result ) {
805 chomp($result);
806 @logged_in_user_list = split(/\s/, $result);
807 }
809 system("echo 'CURRENTLY_LOGGED_IN ".join(" ", @logged_in_user_list)."' > /var/run/gosa-si-client.socket");
810 $kernel->delay_set('trigger_logged_in_users_report', $trigger_logged_in_users_report_delay);
811 } else {
812 # try it in 10 sec again
813 $kernel->delay_set('trigger_logged_in_users_report', 10);
814 }
815 }
817 sub trigger_set_terminal_server
818 {
819 # Function is defined in load_reporter.pm
820 if (exists $event_hash->{set_terminal_server})
821 {
822 no strict 'refs';
823 &{$event_hash->{set_terminal_server}."::set_terminal_server"};
824 }
825 else
826 {
827 &daemon_log("0 ERROR: load_reporter.pm needs function set_terminal_server to write terminal server load information to client. Processing aborted!", 1);
828 }
829 return;
830 }
832 sub trigger_seen_messages {
833 my ($kernel) = $_[KERNEL] ;
835 # Select all files under /tmp with prefix 'goto_notify'
836 my $goto_dir = "/tmp";
837 opendir(DIR, $goto_dir);
838 my @goto_files = grep { /.+\.goto_notify$/ && -f "$goto_dir/$_" } readdir(DIR);
839 closedir DIR;
841 # Check if file has 'seen' tag
842 foreach my $goto_file (@goto_files) {
843 open(FILE, "$goto_dir/$goto_file");
844 my @lines = <FILE>;
845 close FILE;
847 my $source;
848 my $target;
849 my $usr;
850 my $subject;
851 my $message;
852 my $seen = 0;
853 chomp(@lines);
854 foreach my $line (@lines) {
855 if ($line =~ /^source:([\S\s]*)$/) {
856 $source = $1
857 }
858 if ($line =~ /^target:([\S\s]*)$/) {
859 $target = $1;
860 }
861 if ($line =~ /^usr:([\S\s]*)$/) {
862 $usr = $1;
863 }
864 if ($line =~ /^subject:([\S\s]*)$/) {
865 $subject = $1;
866 }
867 if ($line =~ /^message:([\S\s]*)$/) {
868 $message = $1;
869 }
870 if ($line =~ /^seen$/) {
871 $seen++;
872 }
873 }
875 # Send 'confirm_usr_msg' back to msg-hosting server
876 if ($seen) {
877 my %data = ('usr'=>$usr, 'subject'=>$subject, 'message'=>$message);
878 my $confirm_msg = &build_msg("confirm_usr_msg", $target, $source, \%data);
879 my $send_error = &send_msg_to_target($confirm_msg, $server_address, $server_key);
881 # Delete file
882 if (not $send_error) {
883 system("rm $goto_dir/$goto_file");
884 }
885 }
886 }
888 $kernel->delay_set('trigger_seen_messages', $trigger_seen_messages_delay);
890 return;
891 }
894 sub generic_file_error {
895 my ( $heap, $operation, $errno, $error_string, $wheel_id ) =
896 @_[ HEAP, ARG0, ARG1, ARG2, ARG3 ];
898 my $service = $heap->{services}->{$wheel_id};
899 daemon_log("ERROR: '$service' watcher $operation error $errno: $error_string", 1);
900 daemon_log("ERROR: shutting down '$service' file watcher", 1);
902 delete $heap->{services}->{$wheel_id};
903 delete $heap->{watchers}->{$wheel_id};
904 return;
905 }
908 sub fai_fifo_got_record {
909 my $file_record = $_[ARG0];
910 my $header;
911 my $content = "";
912 daemon_log("DEBUG: fifo got record: $file_record", 7);
914 $file_record =~ /^(\S+)[ ]?([\s\S]+)?$/;
915 if( defined $1 ) {
916 $header = $1;
917 } else {
918 return;
919 }
921 if( defined $2 ) {
922 $content = $2;
923 }
925 my $clmsg_hash = &create_xml_hash("CLMSG_$header", $client_address, $server_address, $content);
926 &add_content2xml_hash($clmsg_hash, "macaddress", $client_mac_address);
927 my $utc_ts = &main::get_utc_time();
928 &add_content2xml_hash($clmsg_hash, "timestamp", $utc_ts);
929 my $clmsg = &create_xml_string($clmsg_hash);
930 &send_msg_to_target($clmsg, $server_address, $server_key, "CLMSG_$header");
932 # if installation finished, save all log files
933 if ($file_record eq "TASKBEGIN finish") {
934 &save_fai_log($fai_log_dir);
935 }
937 return;
938 }
941 sub system_fifo_got_record {
942 my ($kernel, $socket_com_record) = @_[KERNEL, ARG0];
943 $socket_com_record =~ /^(\S+)\s?([\s\S]*)$/;
944 my $function = $1;
945 my $content = $2;
947 if( exists $event_hash->{$function} )
948 {
949 # a event exists with the header as name
950 daemon_log("INFO: found event '$function' at event-module '".$event_hash->{$function}."'", 5);
951 no strict 'refs';
952 my $answer = &{$event_hash->{$function}."::$function"}($content, $kernel);
953 &post_processing_and_sending($answer)
954 }
955 else
956 {
957 daemon_log("ERROR: Got input '$socket_com_record' from socket '$system_com_fifo'", 1);
958 daemon_log("ERROR: No event '$function' found in event modules under '$event_dir'.", 1);
959 }
961 # # Sanity check of fifo record
962 #
963 # # Create record message
964 # my $lr_msg_hash = &create_xml_hash("load_report", $client_address, $server_address, $file_record);
965 # &add_content2xml_hash($lr_msg_hash, "macaddress", $client_mac_address);
966 # my $utc_ts = &main::get_utc_time();
967 # &add_content2xml_hash($lr_msg_hash, "timestamp", $utc_ts);
968 # my $lr_msg = &create_xml_string($lr_msg_hash);
969 #
970 # # Report message to si-server
971 # &send_msg_to_target($lr_msg, $server_address, $server_key, "load_report");
973 return;
974 }
977 sub save_fai_log {
978 my ($fai_log_dir) = @_ ;
979 my $FAI_DIR;
981 # Directory for log files after a softupdate
982 my $log_dir = File::Spec->catdir($fai_log_dir, "localhost/last");
984 if (not -d $log_dir) {
985 # Directory for log files after a new installation
986 $log_dir = "/tmp/fai";
987 if (not -d $log_dir) {
988 daemon_log("ERROR: cannot open directory $log_dir", 1);
989 return;
990 }
991 }
993 opendir($FAI_DIR, "$log_dir");
994 my @log_files = readdir($FAI_DIR);
995 closedir($FAI_DIR);
997 my @log_list;
998 foreach my $log_file (@log_files) {
999 if( $log_file eq "." || $log_file eq ".." ) { next; }
1001 my $log = "log_file:$log_file:";
1002 $log_file = File::Spec->catfile( $log_dir, $log_file );
1004 if (not -f $log_file) {
1005 daemon_log("ERROR: cannot read $log_file", 1);
1006 next;
1007 }
1009 open(FILE, "<$log_file");
1010 my @lines = <FILE> ;
1011 close (FILE);
1012 my $log_string = join("", @lines);
1013 $log .= &encode_base64($log_string);
1014 push(@log_list, $log);
1015 }
1017 my $all_log_string = join("\n", @log_list);
1018 my $msg_hash = &create_xml_hash("CLMSG_save_fai_log", $client_address, $server_address, $all_log_string);
1019 &add_content2xml_hash($msg_hash, "macaddress", $client_mac_address);
1020 my $msg = &create_xml_string($msg_hash);
1021 &send_msg_to_target($msg, $server_address, $server_key, "CLMSG_save_fai_log");
1023 }
1026 sub sig_handler {
1027 my ($kernel, $signal) = @_[KERNEL, ARG0] ;
1028 daemon_log("0 INFO got signal '$signal'", 1);
1029 $kernel->sig_handled();
1030 return;
1031 }
1034 sub _start {
1035 my ($kernel, $heap) = @_[KERNEL, HEAP];
1036 $kernel->alias_set('client_session');
1037 $global_kernel = $kernel; # this is used to throw events at each point of the skript
1039 $kernel->sig(USR1 => "sig_handler");
1041 # force a registration at a gosa-si-server
1042 $kernel->yield('register_at_gosa_si_server');
1044 # install all file watcher defined
1045 while( my($name, $file) = each %files_to_watch ) {
1046 my $watcher = POE::Wheel::FollowTail->new(
1047 Filename => $file,
1048 InputEvent => $name."_record",
1049 ErrorEvent => "file_error",
1050 );
1051 $heap->{services}->{ $watcher->ID } = $name;
1052 $heap->{watchers}->{ $watcher->ID } = $watcher;
1053 }
1054 $kernel->yield('trigger_logged_in_users_report');
1055 $kernel->yield('trigger_seen_messages');
1056 }
1059 sub _default {
1060 daemon_log("ERROR: can not handle incoming msg with header '$_[ARG0]'", 1);
1061 return;
1062 }
1065 sub server_input {
1066 my ($kernel, $heap, $input, $wheel) = @_[KERNEL, HEAP, ARG0, ARG1];
1067 my $remote_ip = $heap->{'remote_ip'},
1068 my $error = 0;
1069 my $answer;
1071 daemon_log("INFO: Incoming msg from '$remote_ip'", 5);
1072 daemon_log("DEBUG: Incoming msg:\n$input\n", 9);
1074 # Cut of ip and port from msgs tail
1075 my ($encrypted_msg, $msg_source) = split(/;/, $input);
1077 my ($msg, $msg_hash) = &check_key_and_xml_validity($encrypted_msg, $server_key);
1078 if( (!$msg) || (!$msg_hash) ) {
1079 daemon_log("WARNING: Deciphering of incoming msg failed", 3);
1080 if($server_address =~ /$remote_ip/) {
1081 # Got a msg from gosa-si-server which can not be decrypted, the secrete is not up-to-date
1082 # cause a reregistering with a new secrete handshake
1083 daemon_log("ERROR: Message from gosa-si-server could not be understood, cause reregistering at server", 1);
1084 if ($REGISTERED) {
1085 daemon_log("INFO: Client has currently status registered so throw new registering event", 5);
1086 &_setREGISTERED(0);
1087 $kernel->post('client_session', 'register_at_gosa_si_server');
1088 } else {
1089 daemon_log("INFO: Client is currently within a registration process so wait for the next registration itteration", 5);
1090 }
1091 }
1092 $error++;
1093 }
1096 ######################
1097 # process incoming msg
1098 if( $error == 0 ) {
1099 my $header = @{$msg_hash->{header}}[0];
1100 my $source = @{$msg_hash->{source}}[0];
1102 if( exists $event_hash->{$header} ) {
1104 # a event exists with the header as name
1105 daemon_log("INFO: found event '$header' at event-module '".$event_hash->{$header}."'", 5);
1106 no strict 'refs';
1107 $answer = &{$event_hash->{$header}."::$header"}($msg, $msg_hash);
1108 }
1109 else {
1110 daemon_log("WARNING: no event '$header' found in event modules under $event_dir", 3);
1111 }
1112 }
1114 ########
1115 # answer
1116 &post_processing_and_sending($answer);
1118 return;
1119 }
1121 sub post_processing_and_sending
1122 {
1123 my ($answer) = @_ ;
1125 # Do nothing if answer does not exists
1126 if (not defined $answer) { return; }
1128 # Check gosa-si envelope validity
1129 my $answer_hash = &check_outgoing_xml_validity($answer);
1131 # If answer is valid go ahead
1132 if( not defined $answer_hash ) { return; }
1134 # Sending
1135 $answer =~ /<header>(\S+)<\/header>/;
1136 &send_msg_to_target($answer, $server_address, $server_key, $1);
1138 return;
1139 }
1142 #==== MAIN = main ==============================================================
1143 # parse commandline options
1144 Getopt::Long::Configure( "bundling" );
1145 GetOptions("h|help" => \&usage,
1146 "c|config=s" => \$cfg_file,
1147 "f|foreground" => \$foreground,
1148 "v|verbose+" => \$verbose,
1149 );
1151 # read and set config parameters
1152 &check_cmdline_param ;
1153 &read_configfile($cfg_file, %cfg_defaults);
1154 &check_pid;
1157 # forward error messages to logfile
1158 if ( ! $foreground ) {
1159 open( STDIN, '+>/dev/null' );
1160 open( STDOUT, '+>&STDIN' );
1161 open( STDERR, '+>&STDIN' );
1162 }
1164 # Just fork, if we are not in foreground mode
1165 if( ! $foreground ) {
1166 chdir '/' or die "Can't chdir to /: $!";
1167 $pid = fork;
1168 setsid or die "Can't start a new session: $!";
1169 umask 0;
1170 } else {
1171 $pid = $$;
1172 }
1174 # Do something useful - put our PID into the pid_file
1175 if( 0 != $pid ) {
1176 open( LOCK_FILE, ">$pid_file" );
1177 print LOCK_FILE "$pid\n";
1178 close( LOCK_FILE );
1179 if( !$foreground ) {
1180 exit( 0 )
1181 };
1182 }
1184 # parse head url and revision from svn
1185 my $client_status_hash = { 'developmental'=>'revision', 'stable'=>'release'};
1186 $client_version =~ /^\$HeadURL: (\S+) \$:\$Rev: (\d+) \$$/;
1187 $client_headURL = defined $1 ? $1 : 'unknown' ;
1188 $client_revision = defined $2 ? $2 : 'unknown' ;
1189 if ($client_headURL =~ /\/tag\// ||
1190 $client_headURL =~ /\/branches\// ) {
1191 $client_status = "stable";
1192 } else {
1193 $client_status = "developmental" ;
1194 }
1196 # Determine root uid and adm gid, used for creating log files
1197 $root_uid = getpwnam('root');
1198 $adm_gid = getgrnam('adm');
1199 if(not defined $adm_gid){
1200 $adm_gid = getgrnam('root');
1201 }
1203 daemon_log(" ", 1);
1204 daemon_log("$prg started!", 1);
1205 daemon_log("INFO: status: $client_status", 1);
1206 daemon_log("INFO: ".$client_status_hash->{$client_status}.": $client_revision", 1);
1208 # delete old DBsqlite lock files
1209 system('rm -f /tmp/gosa_si_lock*gosa-si-client*');
1211 # detect ip and mac address and complete host address
1212 $client_address = $client_ip.":".$client_port;
1213 my $network_interface= &get_interface_for_ip($client_ip);
1214 $client_mac_address= &get_mac($network_interface);
1215 daemon_log("INFO: ip address detected: $client_ip", 1);
1216 daemon_log("INFO: gosa-si-client mac address detected: $client_mac_address", 1);
1219 # import events
1220 my ($error, $result, $tmp_hash) = &import_events($event_dir);
1221 while (my ($module, $mod_event_hash) = each %$tmp_hash) {
1222 while (my ($event_name, $nothing) = each %$mod_event_hash) {
1223 $event_hash->{$event_name} = $module;
1224 }
1225 }
1227 foreach my $log_line (@$result) {
1228 if ($log_line =~ / succeed: /) {
1229 &main::daemon_log("0 DEBUG: $log_line", 7);
1230 } else {
1231 &main::daemon_log("0 ERROR: $log_line", 1);
1232 }
1233 }
1236 # compute hardware checksum
1237 $gotoHardwareChecksum= &generate_hw_digest();
1238 daemon_log("INFO: gotoHardwareChecksum detected: $gotoHardwareChecksum", 1);
1241 # create socket for incoming xml messages
1242 POE::Component::Server::TCP->new(
1243 Alias => 'gosa-si-client',
1244 Port => $client_port,
1245 ClientInput => \&server_input,
1246 );
1247 daemon_log("INFO: start socket for incoming xml messages at port '$client_port' ", 1);
1250 # prepare variables
1251 if( inet_aton($server_ip) ){ $server_ip = inet_ntoa(inet_aton($server_ip)); }
1252 if (defined $server_ip && defined $server_port) {
1253 $server_address = $server_ip.":".$server_port;
1254 }
1255 $xml = new XML::Simple();
1256 $default_server_key = $server_key;
1258 # add gosa-si-server address from config file at first position of server list
1259 my $server_check_cfg = Config::IniFiles->new( -file => $cfg_file );
1260 my $server_check = (defined($server_check_cfg))?$server_check_cfg->val( "server", "ip"):undef;
1261 if( defined $server_check ) {
1262 unshift(@servers, $server_address);
1263 my $servers_string = join(", ", @servers);
1264 daemon_log("INFO: found servers in configuration file: $servers_string", 1);
1265 } else {
1266 my @tmp_servers;
1267 if ( !$server_domain) {
1268 # Try our DNS Searchlist
1269 my @domain_list = &get_dns_domains();
1270 my $tmp_domains;
1271 my $error_string;
1272 for my $domain (@domain_list) {
1273 chomp($domain);
1274 ($tmp_domains, $error_string) = &get_server_addresses($domain);
1275 if(@$tmp_domains) {
1276 for my $tmp_server(@$tmp_domains) {
1277 push @tmp_servers, $tmp_server;
1278 }
1279 }
1280 }
1281 if (0 == @tmp_servers) {
1282 my $log_string = "no gosa-si-server found in DNS for domain: ".join(", ", @domain_list) if (@domain_list);
1283 my $log_string2 = "server addresses in domain: ".join(", ",@$tmp_domains) if (defined($tmp_domains));
1284 daemon_log("ERROR: $log_string", 1) if (defined($log_string));
1285 daemon_log("ERROR: $log_string2", 1) if (defined($log_string2));
1286 daemon_log("ERROR: $error_string", 1) if (defined($error_string));
1287 daemon_log("ERROR: please specify a gosa-si-server address or a domain in config file", 1);
1288 kill 2, $$;
1289 }
1290 } else {
1291 @tmp_servers = &get_server_addresses($server_domain);
1292 if( 0 == @tmp_servers ) {
1293 daemon_log("ERROR: no gosa-si-server found in DNS for domain '$server_domain'",1);
1294 daemon_log("ERROR: please specify a gosa-si-server address or a domain in config file", 1);
1295 kill 2, $$;
1296 }
1297 }
1299 foreach my $server (@tmp_servers) {
1300 unshift(@servers, $server);
1301 }
1302 my $servers_string = join(", ", @servers);
1303 daemon_log("INFO: found servers in DNS: $servers_string", 1);
1304 }
1307 # Open a new fifo for FAI messages to gosa-si-server
1308 if (-p $fai_com_fifo) { unlink $fai_com_fifo }
1309 POSIX::mkfifo("$fai_com_fifo", 0600);
1311 # Open a new fifo for system communication,
1312 if (-p $system_com_fifo) { unlink $system_com_fifo }
1313 if ($system_com eq "enabled")
1314 {
1315 POSIX::mkfifo("$system_com_fifo", 0600);
1316 }
1318 POE::Session->create(
1319 inline_states => {
1320 _start => \&_start,
1321 _default => \&_default,
1322 sig_handler => \&sig_handler,
1323 register_at_gosa_si_server => \®ister_at_gosa_si_server,
1325 # trigger periodical tasks
1326 trigger_new_key => \&trigger_new_key,
1327 trigger_logged_in_users_report => \&trigger_logged_in_users_report,
1328 trigger_seen_messages => \&trigger_seen_messages,
1330 # trigger non periodical tasks
1331 trigger_set_terminal_server => \&trigger_set_terminal_server,
1333 # handle records from each defined file differently
1334 fai_fifo_record => \&fai_fifo_got_record,
1335 system_fifo_record => \&system_fifo_got_record,
1337 # handle file resets and errors the same way for each file
1338 file_reset => \&generic_file_reset,
1339 file_error => \&generic_file_error,
1340 }
1341 );
1343 POE::Kernel->run();
1344 exit;