0ffe6e15867442010667644fdf8e93e45a22a9ba
1 #!/usr/bin/perl
2 #===============================================================================
3 #
4 # FILE: gosa-si-client
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 use strict;
22 use warnings;
23 use Getopt::Long;
24 use Config::IniFiles;
25 use POSIX;
26 use Time::HiRes qw( gettimeofday );
28 use POE qw(Component::Server::TCP Wheel::FollowTail Wheel::Run);
29 use IO::Socket::INET;
30 use NetAddr::IP;
31 use Crypt::Rijndael;
32 use GOSA::GosaSupportDaemon;
33 use Digest::MD5 qw(md5_hex md5 md5_base64);
34 use MIME::Base64;
35 use XML::Simple;
36 use File::Basename;
37 use File::Spec;
38 use Net::ARP;
39 use Fcntl;
41 # Workaround: need pure perl to make it work with UTF-8 :-(
42 $XML::Simple::PREFERRED_PARSER= "XML::SAX::PurePerl";
44 my $client_version = '$HeadURL$:$Rev$';
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 my $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(my $LOCK_FILE, "<","$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(my $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 # Microseconds since epoch
265 my $microSeconds = sprintf("%.2f", &Time::HiRes::clock_gettime());
266 $microSeconds =~ s/^\d*(.\d\d)$/$1/;
269 my $log_msg = "$month $monthday $hours:$minutes:$seconds$microSeconds $prg $msg\n";
270 print LOG_HANDLE $log_msg;
271 if( $foreground ) {
272 print STDERR $log_msg;
273 }
274 }
275 close( LOG_HANDLE );
276 }
277 }
280 #=== FUNCTION ================================================================
281 # NAME: get_mac
282 # PARAMETERS: interface name (i.e. eth0)
283 # RETURNS: (mac address)
284 # DESCRIPTION: Uses ioctl to get mac address directly from system.
285 #===============================================================================
286 sub get_mac {
287 my $ifreq= shift;
288 my $result;
289 if ($ifreq && length($ifreq) > 0) {
290 if($ifreq eq "all") {
291 if(defined($server_ip)) {
292 $result = &get_local_mac_for_remote_ip($server_ip);
293 }
294 elsif ($client_mac_address && length($client_mac_address) > 0 && !($client_mac_address eq "00:00:00:00:00:00")){
295 $result = &client_mac_address;
296 }
297 else {
298 $result = "00:00:00:00:00:00";
299 }
300 } else {
301 # A configured MAC Address should always override a guessed value
302 if ($client_mac_address and length($client_mac_address) > 0 and not($client_mac_address eq "00:00:00:00:00:00")) {
303 $result= $client_mac_address;
304 }
305 else {
306 $result = Net::ARP::get_mac($ifreq);
307 }
308 }
309 }
310 return $result;
311 }
315 #=== FUNCTION ================================================================
316 # NAME: get_local_mac_for_remote_ip
317 # PARAMETERS: none (takes server_ip from global variable)
318 # RETURNS: (ip address from interface that is used for communication)
319 # DESCRIPTION: Uses ioctl to get routing table from system, checks which entry
320 # matches (defaultroute last).
321 #===============================================================================
322 sub get_local_mac_for_remote_ip {
323 my $server_ip= shift;
324 my $result= "00:00:00:00:00:00";
326 if($server_ip =~ /^[a-z][a-z0-9\.]+/i) {
327 my $ip_address = inet_ntoa(scalar gethostbyname($server_ip));
328 if(defined($ip_address) && $ip_address =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}/) {
329 # Write ip address to $server_ip variable
330 $server_ip = $ip_address;
331 }
332 }
334 if($server_ip =~ /^(\d\d?\d?\.){3}\d\d?\d?$/) {
335 my $PROC_NET_ROUTE= ('/proc/net/route');
337 open(my $PROC_NET_ROUTE, "<","$PROC_NET_ROUTE")
338 or die "Could not open $PROC_NET_ROUTE";
340 my @ifs = <$PROC_NET_ROUTE>;
342 close($PROC_NET_ROUTE);
344 # Eat header line
345 shift @ifs;
346 chomp @ifs;
347 foreach my $line(@ifs) {
348 my ($Iface,$Destination,$Gateway,$Flags,$RefCnt,$Use,$Metric,$Mask,$MTU,$Window,$IRTT)=split(/\s/, $line);
349 my $destination;
350 my $mask;
351 my ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Destination);
352 $destination= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
353 ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Mask);
354 $mask= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
355 if(new NetAddr::IP($server_ip)->within(new NetAddr::IP($destination, $mask))) {
356 # destination matches route, save mac and exit
357 $result= &get_mac($Iface);
358 last;
359 }
360 }
361 } else {
362 daemon_log("get_local_mac_for_remote_ip was called with a non-ip parameter: $server_ip", 1);
363 }
364 return $result;
365 }
368 sub generate_hw_digest {
369 my $hw_data;
370 foreach my $line (split /\n/, `cat /proc/bus/pci/devices`) {
371 $hw_data.= sprintf "%s", $line =~ /[^\s]+\s([^\s]+)\s.*/;
372 }
373 # linux-vserver has no /proc/bus/pci/devices
374 if ( !$hw_data ) {
375 foreach my $line (split /\n/, `ifconfig | grep HWaddr`) {
376 $hw_data.= sprintf "%s", $line =~ /[^\s]+\s([^\s]+)\s.*/;
377 }
378 }
379 return(md5_base64($hw_data));
380 }
383 sub create_ciphering {
384 my ($passwd) = @_;
385 if((!defined($passwd)) || length($passwd)==0) {
386 $passwd = "";
387 }
388 $passwd = substr(md5_hex("$passwd") x 32, 0, 32);
389 my $iv = substr(md5_hex('GONICUS GmbH'),0, 16);
390 my $my_cipher = Crypt::Rijndael->new($passwd , Crypt::Rijndael::MODE_CBC());
391 $my_cipher->set_iv($iv);
392 return $my_cipher;
393 }
396 sub encrypt_msg {
397 my ($msg, $key) = @_;
398 my $my_cipher = &create_ciphering($key);
399 my $len;
400 {
401 use bytes;
402 $len= 16-length($msg)%16;
403 }
404 $msg = "\0"x($len).$msg;
405 $msg = $my_cipher->encrypt($msg);
406 chomp($msg = &encode_base64($msg));
407 # there are no newlines allowed inside msg
408 $msg=~ s/\n//g;
409 return $msg;
410 }
413 sub decrypt_msg {
415 my ($msg, $key) = @_ ;
416 $msg = &decode_base64($msg);
417 my $my_cipher = &create_ciphering($key);
418 $msg = $my_cipher->decrypt($msg);
419 $msg =~ s/\0*//g;
420 return $msg;
421 }
424 #=== FUNCTION ================================================================
425 # NAME: send_msg_hash_to_target
426 # PARAMETERS: msg_hash - hash - xml_hash created with function create_xml_hash
427 # PeerAddr string - socket address to send msg
428 # PeerPort string - socket port, if not included in socket address
429 # RETURNS: nothing
430 # DESCRIPTION: ????
431 #===============================================================================
432 sub send_msg_hash_to_target {
433 my ($msg_hash, $address, $encrypt_key) = @_ ;
434 my $msg = &create_xml_string($msg_hash);
435 my $header = @{$msg_hash->{'header'}}[0];
436 my $error = &send_msg_to_target($msg, $address, $encrypt_key, $header);
438 return $error;
439 }
441 sub _setREGISTERED {
442 my $newStatus = shift;
443 &daemon_log("DEBUG: set REGISTERED flag from '$REGISTERED' to '$newStatus'", 7);
444 $REGISTERED = $newStatus;
445 return;
446 }
448 sub send_msg_to_target {
449 my ($msg, $address, $encrypt_key, $msg_header) = @_ ;
450 my $error = 0;
452 if( $msg_header ) { $msg_header = "'$msg_header'-"; }
453 else { $msg_header = ""; }
455 # Memorize own source address
456 $msg =~ /<source>(\S+)<\/source>/;
457 my $own_source_address = $1;
459 # encrypt xml msg
460 my $crypted_msg = &encrypt_msg($msg, $encrypt_key);
462 # opensocket
463 my $socket = &open_socket($address);
464 if( !$socket ) {
465 daemon_log("WARNING: cannot send ".$msg_header."msg to '$address', host not reachable", 3);
466 if ($REGISTERED == 1) {
467 &_setREGISTERED(0); # if server is not available, cause reregistering
468 daemon_log("INFO: cause reregistering at gosa-si-server", 5);
469 $global_kernel->yield('register_at_gosa_si_server');
471 }
472 $error++;
473 }
475 # send xml msg
476 if( $error == 0 ) {
477 print $socket $crypted_msg.";$own_source_address\n";
478 daemon_log("INFO: send ".$msg_header."msg to $address", 5);
479 daemon_log("DEBUG: message:\n$msg", 9);
480 }
482 # close socket in any case
483 if( $socket ) {
484 close $socket;
485 }
487 return $error;
488 }
491 sub write_to_file {
492 my ($string, $file) = @_;
493 my $error = 0;
495 if( not defined $file || not -f $file ) {
496 &main::daemon_log("ERROR: $prg: check '-f file' failed: $file", 1);
497 $error++;
498 }
499 if( not defined $string || 0 == length($string)) {
500 &main::daemon_log("ERROR: $prg: empty string to write to file '$file'", 1);
501 $error++;
502 }
504 if( $error == 0 ) {
506 chomp($string);
508 if (open(my $FILE, ">>", "$file")){
509 print $FILE $string."\n";
510 close($FILE);
511 }
512 }
514 return;
515 }
518 sub open_socket {
519 my ($PeerAddr, $PeerPort) = @_ ;
520 if(defined($PeerPort)){
521 $PeerAddr = $PeerAddr.":".$PeerPort;
522 }
523 my $socket;
524 $socket = new IO::Socket::INET(PeerAddr => $PeerAddr,
525 Porto => "tcp",
526 Type => SOCK_STREAM,
527 Timeout => 5,
528 );
529 if(not defined $socket) {
530 return;
531 }
532 &daemon_log("DEBUG: open_socket: $PeerAddr", 7);
533 return $socket;
534 }
537 #=== FUNCTION ================================================================
538 # NAME: register_at_server
539 # PARAMETERS:
540 # RETURNS:
541 # DESCRIPTION:
542 #===============================================================================
543 sub register_at_gosa_si_server {
544 my ($kernel) = $_[KERNEL];
545 my $try_to_register = 0;
547 if ($REGISTERED) {
548 # Client is already registered, clear all other registration events
549 $kernel->delay('register_at_gosa_si_server');
550 } else {
551 # Client is not registered, start registration process
552 # Clear all other events and wait till registration was successful
553 $kernel->delay('register_at_gosa_si_server');
554 $kernel->delay('trigger_new_key');
556 # Create new passwd and ciphering object for client-server communication
557 $server_key = &create_passwd();
559 my $events = join( ",", keys %{$event_hash} );
560 while(1) {
561 $try_to_register++;
563 # after one complete round through all server, stop trying to register
564 if( $try_to_register > @servers ) { last; }
566 # fetch first gosa-si-server from @servers
567 # append shifted gosa-si-server at the end of @servers, so looking for servers never stop if
568 # a registration never occured
569 my $server = shift(@servers);
570 push( @servers, $server );
572 # Check if $server is a valid server address
573 if(!(defined($server) && $server =~ m/^[0-9\.]*?:.*$/)) {
574 &main::daemon_log("ERROR: Server with address '".defined($server)?$server:""."' is invalid!", 1);
575 if (length(@servers) == 1) {
576 &main::daemon_log("ERROR: No valid servers found!", 1);
577 exit(1);
578 }
579 }
581 # Check if our ip is resolvable - if not: don't try to register
582 my $ip= &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
583 my $dnsname= gethostbyaddr(inet_aton($ip), AF_INET);
584 if(!defined($dnsname)) {
585 if( defined($client_force_hostname) && $client_force_hostname eq "true") {
586 $dnsname = `hostname`;
587 } else {
588 &write_to_file("goto-error-dns:$ip", $fai_logpath);
589 &main::daemon_log("ERROR: ip is not resolvable, no registration possible. Write 'goto-error-dns:$ip' to $fai_logpath", 1);
590 exit(1);
591 }
592 }
594 # create registration msg
595 my $local_ip = &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
596 my $local_mac = &get_local_mac_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
597 my $register_hash = &create_xml_hash("here_i_am", $local_ip.":".$client_port, $server);
598 &add_content2xml_hash($register_hash, "new_passwd", $server_key);
599 &add_content2xml_hash($register_hash, "mac_address", $local_mac);
600 &add_content2xml_hash($register_hash, "events", $events);
601 &add_content2xml_hash($register_hash, "client_status", $client_status);
602 &add_content2xml_hash($register_hash, "client_revision", $client_revision);
603 &add_content2xml_hash($register_hash, "gotoHardwareChecksum", $gotoHardwareChecksum);
604 &add_content2xml_hash($register_hash, "key_lifetime", $server_key_lifetime);
606 # Add $HOSTNAME from ENV if force-hostname is set
607 if( defined($client_force_hostname) && $client_force_hostname eq "true") {
608 if(defined($ENV{HOSTNAME}) && length($ENV{HOSTNAME}) >0 ) {
609 &add_content2xml_hash($register_hash, "force-hostname", $ENV{HOSTNAME});
610 } else {
611 &main::daemon_log("force-hostname was set to true, but no \$HOSTNAME was found in Environment!",0);
612 }
613 }
615 # send xml hash to server with general server passwd
616 my $res = &send_msg_hash_to_target($register_hash, $server, $default_server_key);
618 # if delivery of registration msg succeed
619 if($res eq "0") {
620 # reset try_to_register
621 $try_to_register = 0;
623 # Set fixed client address and mac address
624 $client_ip= &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
625 $client_address= "$client_ip:$client_port";
626 $client_mac_address = $local_mac;
627 $client_dnsname = $dnsname;
628 last;
630 # delivery of registration msg failed
631 } else {
632 # wait 1 sec until trying to register again
633 sleep(1);
634 next;
635 }
637 } # end of while
639 if ( $try_to_register >= @servers ) {
640 # One circle through all servers finished and no registration succeed
641 &write_to_file("gosa-si-no-server-available", $fai_logpath);
642 } else {
643 # Delivery of registraion msg succeed, waiting for server response
644 daemon_log("INFO: waiting for msg 'register_at_gosa_si_server'",5);
645 # Clear old settings and set it again
646 $kernel->delay('trigger_new_key');
647 $kernel->delay_set('trigger_new_key', $server_key_lifetime);
648 }
650 # Set waiting time for 'register_at_gosa_si_server'-event
651 $kernel->delay_set('register_at_gosa_si_server', $delay_set_time);
652 }
653 return;
654 }
657 sub check_key_and_xml_validity {
658 my ($crypted_msg, $module_key) = @_;
660 my $msg;
661 my $msg_hash;
662 eval{
663 $msg = &decrypt_msg($crypted_msg, $module_key);
664 &main::daemon_log("decrypted_msg: \n$msg", 9);
666 $msg_hash = $xml->XMLin($msg, ForceArray=>1);
668 ##############
669 # check header
670 my $header_l = $msg_hash->{'header'};
671 if( 1 != @{$header_l} ) {
672 die 'no or more headers specified';
673 }
674 my $header = @{$header_l}[0];
675 if( 0 == length $header) {
676 die 'header has length 0';
677 }
679 ##############
680 # check source
681 my $source_l = $msg_hash->{'source'};
682 if( 1 != @{$source_l} ) {
683 die 'no or more than 1 sources specified';
684 }
685 my $source = @{$source_l}[0];
686 if( 0 == length $source) {
687 die 'source has length 0';
688 }
689 unless( $source =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ) {
690 die "source '$source' is neither a complete ip-address with port nor 'GOSA'";
691 }
693 ##############
694 # check target
695 my $target_l = $msg_hash->{'target'};
696 if( 1 != @{$target_l} ) {
697 die 'no or more than 1 targets specified ';
698 }
699 my $target = @{$target_l}[0];
700 if( 0 == length $target) {
701 die 'target has length 0 ';
702 }
703 unless( $target =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ){
704 die "source is neither a complete ip-address with port nor 'GOSA'";
705 }
706 };
707 if($@) {
708 &main::daemon_log("WARNING: do not understand the message or msg is not gosa-si envelope conform:", 5);
709 &main::daemon_log("$@", 8);
710 $msg = undef;
711 $msg_hash = undef;
712 }
714 return ($msg, $msg_hash);
715 }
718 sub check_outgoing_xml_validity {
719 my ($msg) = @_;
721 my $msg_hash;
722 eval{
723 $msg_hash = $xml->XMLin($msg, ForceArray=>1);
725 ##############
726 # check header
727 my $header_l = $msg_hash->{'header'};
728 if( 1 != @{$header_l} ) {
729 die 'no or more than one headers specified';
730 }
731 my $header = @{$header_l}[0];
732 if( 0 == length $header) {
733 die 'header has length 0';
734 }
736 ##############
737 # check source
738 my $source_l = $msg_hash->{'source'};
739 if( 1 != @{$source_l} ) {
740 die 'no or more than 1 sources specified';
741 }
742 my $source = @{$source_l}[0];
743 if( 0 == length $source) {
744 die 'source has length 0';
745 }
746 unless( $source =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ||
747 $source =~ /^GOSA$/i ) {
748 die "source '$source' is neither a complete ip-address with port";
749 }
751 ##############
752 # check target
753 my $target_l = $msg_hash->{'target'};
754 if( 1 != @{$target_l} ) {
755 die "no or more than one targets specified";
756 }
757 foreach my $target (@$target_l) {
758 if( 0 == length $target) {
759 die "target has length 0";
760 }
761 unless( $target =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ) {
762 die "target '$target' is not a complete ip-address with port or a valid target name";
763 }
764 }
765 };
766 if($@) {
767 daemon_log("WARNING: outgoing msg is not gosa-si envelope conform", 5);
768 daemon_log("$@ $msg", 8);
769 $msg_hash = undef;
770 }
771 return ($msg_hash);
772 }
775 sub trigger_new_key {
776 my ($kernel) = $_[KERNEL] ;
778 my $msg = "<xml><header>new_key</header><source>$client_address</source><target>$client_address</target></xml>";
779 &send_msg_to_target($msg, $client_address, $server_key, 'new_key');
781 $kernel->delay_set('trigger_new_key', $server_key_lifetime);
782 }
785 sub trigger_logged_in_users_report {
786 my ($kernel) = $_[KERNEL] ;
788 # just do if client is registered already
789 if( $REGISTERED ) {
790 my $result = qx(/usr/bin/users);
791 my @logged_in_user_list;
792 if( defined $result ) {
793 chomp($result);
794 @logged_in_user_list = split(/\s/, $result);
795 }
797 system("echo 'CURRENTLY_LOGGED_IN ".join(" ", @logged_in_user_list)."' > /var/run/gosa-si-client.socket");
798 $kernel->delay_set('trigger_logged_in_users_report', $trigger_logged_in_users_report_delay);
799 } else {
800 # try it in 10 sec again
801 $kernel->delay_set('trigger_logged_in_users_report', 10);
802 }
803 }
805 sub trigger_set_terminal_server
806 {
807 # Function is defined in load_reporter.pm
808 if (exists $event_hash->{set_terminal_server})
809 {
810 no strict 'refs';
811 &{$event_hash->{set_terminal_server}."::set_terminal_server"};
812 }
813 else
814 {
815 &daemon_log("0 ERROR: load_reporter.pm needs function set_terminal_server to write terminal server load information to client. Processing aborted!", 1);
816 }
817 return;
818 }
820 sub trigger_seen_messages {
821 my ($kernel) = $_[KERNEL] ;
823 # Select all files under /tmp with prefix 'goto_notify'
824 my $goto_dir = "/tmp";
825 opendir(DIR, $goto_dir);
826 my @goto_files = grep { /.+\.goto_notify$/ && -f "$goto_dir/$_" } readdir(DIR);
827 closedir DIR;
829 # Check if file has 'seen' tag
830 foreach my $goto_file (@goto_files) {
831 open(my $FILE, "$goto_dir/$goto_file");
832 my @lines = <$FILE>;
833 close($FILE);
835 my $source;
836 my $target;
837 my $usr;
838 my $subject;
839 my $message;
840 my $seen = 0;
841 chomp(@lines);
842 foreach my $line (@lines) {
843 if ($line =~ /^source:([\S\s]*)$/) {
844 $source = $1
845 }
846 if ($line =~ /^target:([\S\s]*)$/) {
847 $target = $1;
848 }
849 if ($line =~ /^usr:([\S\s]*)$/) {
850 $usr = $1;
851 }
852 if ($line =~ /^subject:([\S\s]*)$/) {
853 $subject = $1;
854 }
855 if ($line =~ /^message:([\S\s]*)$/) {
856 $message = $1;
857 }
858 if ($line =~ /^seen$/) {
859 $seen++;
860 }
861 }
863 # Send 'confirm_usr_msg' back to msg-hosting server
864 if ($seen) {
865 my %data = ('usr'=>$usr, 'subject'=>$subject, 'message'=>$message);
866 my $confirm_msg = &build_msg("confirm_usr_msg", $target, $source, \%data);
867 my $send_error = &send_msg_to_target($confirm_msg, $server_address, $server_key);
869 # Delete file
870 if (not $send_error) {
871 system("rm $goto_dir/$goto_file");
872 }
873 }
874 }
876 $kernel->delay_set('trigger_seen_messages', $trigger_seen_messages_delay);
878 return;
879 }
882 sub generic_file_error {
883 my ( $heap, $operation, $errno, $error_string, $wheel_id ) =
884 @_[ HEAP, ARG0, ARG1, ARG2, ARG3 ];
886 my $service = $heap->{services}->{$wheel_id};
887 daemon_log("ERROR: '$service' watcher $operation error $errno: $error_string", 1);
888 daemon_log("ERROR: shutting down '$service' file watcher", 1);
890 delete $heap->{services}->{$wheel_id};
891 delete $heap->{watchers}->{$wheel_id};
892 return;
893 }
896 sub fai_fifo_got_record {
897 my $file_record = $_[ARG0];
898 my $header;
899 my $content = "";
900 daemon_log("DEBUG: fifo got record: $file_record", 7);
902 $file_record =~ /^(\S+)[ ]?([\s\S]+)?$/;
903 if( defined $1 ) {
904 $header = $1;
905 } else {
906 return;
907 }
909 if( defined $2 ) {
910 $content = $2;
911 }
913 my $clmsg_hash = &create_xml_hash("CLMSG_$header", $client_address, $server_address, $content);
914 &add_content2xml_hash($clmsg_hash, "macaddress", $client_mac_address);
915 my $utc_ts = &main::get_utc_time();
916 &add_content2xml_hash($clmsg_hash, "timestamp", $utc_ts);
917 my $clmsg = &create_xml_string($clmsg_hash);
918 &send_msg_to_target($clmsg, $server_address, $server_key, "CLMSG_$header");
920 # if installation finished, save all log files
921 if ($file_record eq "TASKBEGIN finish") {
922 &save_fai_log($fai_log_dir);
923 }
925 return;
926 }
929 sub system_fifo_got_record {
930 my ($kernel, $socket_com_record) = @_[KERNEL, ARG0];
931 $socket_com_record =~ /^(\S+)\s?([\s\S]*)$/;
932 my $function = $1;
933 my $content = $2;
935 if( exists $event_hash->{$function} )
936 {
937 # a event exists with the header as name
938 daemon_log("INFO: found event '$function' at event-module '".$event_hash->{$function}."'", 5);
939 no strict 'refs';
940 my $answer = &{$event_hash->{$function}."::$function"}($content, $kernel);
941 &post_processing_and_sending($answer)
942 }
943 else
944 {
945 daemon_log("ERROR: Got input '$socket_com_record' from socket '$system_com_fifo'", 1);
946 daemon_log("ERROR: No event '$function' found in event modules under '$event_dir'.", 1);
947 }
949 # # Sanity check of fifo record
950 #
951 # # Create record message
952 # my $lr_msg_hash = &create_xml_hash("load_report", $client_address, $server_address, $file_record);
953 # &add_content2xml_hash($lr_msg_hash, "macaddress", $client_mac_address);
954 # my $utc_ts = &main::get_utc_time();
955 # &add_content2xml_hash($lr_msg_hash, "timestamp", $utc_ts);
956 # my $lr_msg = &create_xml_string($lr_msg_hash);
957 #
958 # # Report message to si-server
959 # &send_msg_to_target($lr_msg, $server_address, $server_key, "load_report");
961 return;
962 }
965 sub save_fai_log {
966 my ($fai_log_dir) = @_ ;
967 my $FAI_DIR;
969 # Directory for log files after a softupdate
970 my $log_dir = File::Spec->catdir($fai_log_dir, "localhost/last");
972 if (not -d $log_dir) {
973 # Directory for log files after a new installation
974 $log_dir = "/tmp/fai";
975 if (not -d $log_dir) {
976 daemon_log("ERROR: cannot open directory $log_dir", 1);
977 return;
978 }
979 }
981 opendir($FAI_DIR, "$log_dir");
982 my @log_files = readdir($FAI_DIR);
983 closedir($FAI_DIR);
985 my @log_list;
986 foreach my $log_file (@log_files) {
987 if( $log_file eq "." || $log_file eq ".." ) { next; }
989 my $log = "log_file:$log_file:";
990 $log_file = File::Spec->catfile( $log_dir, $log_file );
992 if (not -f $log_file) {
993 daemon_log("ERROR: cannot read $log_file", 1);
994 next;
995 }
997 open(my $FILE, "<","$log_file");
998 my @lines = <$FILE> ;
999 close ($FILE);
1000 my $log_string = join("", @lines);
1001 $log .= &encode_base64($log_string);
1002 push(@log_list, $log);
1003 }
1005 my $all_log_string = join("\n", @log_list);
1006 my $msg_hash = &create_xml_hash("CLMSG_save_fai_log", $client_address, $server_address, $all_log_string);
1007 &add_content2xml_hash($msg_hash, "macaddress", $client_mac_address);
1008 my $msg = &create_xml_string($msg_hash);
1009 &send_msg_to_target($msg, $server_address, $server_key, "CLMSG_save_fai_log");
1011 }
1014 sub sig_handler {
1015 my ($kernel, $signal) = @_[KERNEL, ARG0] ;
1016 daemon_log("0 INFO got signal '$signal'", 1);
1017 $kernel->sig_handled();
1018 return;
1019 }
1022 sub _start {
1023 my ($kernel, $heap) = @_[KERNEL, HEAP];
1024 $kernel->alias_set('client_session');
1025 $global_kernel = $kernel; # this is used to throw events at each point of the skript
1027 $kernel->sig(USR1 => "sig_handler");
1029 # force a registration at a gosa-si-server
1030 $kernel->yield('register_at_gosa_si_server');
1032 # install all file watcher defined
1033 while( my($name, $file) = each %files_to_watch ) {
1034 my $watcher = POE::Wheel::FollowTail->new(
1035 Filename => $file,
1036 InputEvent => $name."_record",
1037 ErrorEvent => "file_error",
1038 );
1039 $heap->{services}->{ $watcher->ID } = $name;
1040 $heap->{watchers}->{ $watcher->ID } = $watcher;
1041 }
1042 $kernel->yield('trigger_logged_in_users_report');
1043 $kernel->yield('trigger_seen_messages');
1044 }
1047 sub _default {
1048 daemon_log("ERROR: can not handle incoming msg with header '$_[ARG0]'", 1);
1049 return;
1050 }
1053 sub server_input {
1054 my ($kernel, $heap, $input, $wheel) = @_[KERNEL, HEAP, ARG0, ARG1];
1055 my $remote_ip = $heap->{'remote_ip'},
1056 my $error = 0;
1057 my $answer;
1059 daemon_log("INFO: Incoming msg from '$remote_ip'", 5);
1060 daemon_log("DEBUG: Incoming msg:\n$input\n", 9);
1062 # Cut of ip and port from msgs tail
1063 my ($encrypted_msg, $msg_source) = split(/;/, $input);
1065 my ($msg, $msg_hash) = &check_key_and_xml_validity($encrypted_msg, $server_key);
1066 if( (!$msg) || (!$msg_hash) ) {
1067 daemon_log("WARNING: Deciphering of incoming msg failed", 3);
1068 if($server_address =~ /$remote_ip/) {
1069 # Got a msg from gosa-si-server which can not be decrypted, the secrete is not up-to-date
1070 # cause a reregistering with a new secrete handshake
1071 daemon_log("ERROR: Message from gosa-si-server could not be understood, cause reregistering at server", 1);
1072 if ($REGISTERED) {
1073 daemon_log("INFO: Client has currently status registered so throw new registering event", 5);
1074 &_setREGISTERED(0);
1075 $kernel->post('client_session', 'register_at_gosa_si_server');
1076 } else {
1077 daemon_log("INFO: Client is currently within a registration process so wait for the next registration itteration", 5);
1078 }
1079 }
1080 $error++;
1081 }
1084 ######################
1085 # process incoming msg
1086 if( $error == 0 ) {
1087 my $header = @{$msg_hash->{header}}[0];
1088 my $source = @{$msg_hash->{source}}[0];
1090 if( exists $event_hash->{$header} ) {
1092 # a event exists with the header as name
1093 daemon_log("INFO: found event '$header' at event-module '".$event_hash->{$header}."'", 5);
1094 no strict 'refs';
1095 $answer = &{$event_hash->{$header}."::$header"}($msg, $msg_hash);
1096 }
1097 else {
1098 daemon_log("WARNING: no event '$header' found in event modules under $event_dir", 3);
1099 }
1100 }
1102 ########
1103 # answer
1104 &post_processing_and_sending($answer);
1106 return;
1107 }
1109 sub post_processing_and_sending
1110 {
1111 my ($answer) = @_ ;
1113 # Do nothing if answer does not exists
1114 if (not defined $answer) { return; }
1116 # Check gosa-si envelope validity
1117 my $answer_hash = &check_outgoing_xml_validity($answer);
1119 # If answer is valid go ahead
1120 if( not defined $answer_hash ) { return; }
1122 # Sending
1123 $answer =~ /<header>(\S+)<\/header>/;
1124 &send_msg_to_target($answer, $server_address, $server_key, $1);
1126 return;
1127 }
1130 #==== MAIN = main ==============================================================
1131 # parse commandline options
1132 Getopt::Long::Configure( "bundling" );
1133 GetOptions("h|help" => \&usage,
1134 "c|config=s" => \$cfg_file,
1135 "f|foreground" => \$foreground,
1136 "v|verbose+" => \$verbose,
1137 );
1139 # read and set config parameters
1140 &check_cmdline_param ;
1141 &read_configfile($cfg_file, %cfg_defaults);
1142 &check_pid;
1145 # forward error messages to logfile
1146 if ( ! $foreground ) {
1147 open( STDIN, '+>/dev/null' );
1148 open( STDOUT, '+>&STDIN' );
1149 open( STDERR, '+>&STDIN' );
1150 }
1152 # Just fork, if we are not in foreground mode
1153 if( ! $foreground ) {
1154 chdir '/' or die "Can't chdir to /: $!";
1155 $pid = fork;
1156 setsid or die "Can't start a new session: $!";
1157 umask 0;
1158 } else {
1159 $pid = $$;
1160 }
1162 # Do something useful - put our PID into the pid_file
1163 if( 0 != $pid ) {
1164 open( my $LOCK_FILE, ">", "$pid_file" );
1165 print $LOCK_FILE "$pid\n";
1166 close( $LOCK_FILE );
1167 if( !$foreground ) {
1168 exit( 0 )
1169 };
1170 }
1172 # parse head url and revision from svn
1173 my $client_status_hash = { 'developmental'=>'revision', 'stable'=>'release'};
1174 $client_version =~ /^\$HeadURL: (\S+) \$:\$Rev: (\d+) \$$/;
1175 $client_headURL = defined $1 ? $1 : 'unknown' ;
1176 $client_revision = defined $2 ? $2 : 'unknown' ;
1177 if ($client_headURL =~ /\/tag\// ||
1178 $client_headURL =~ /\/branches\// ) {
1179 $client_status = "stable";
1180 } else {
1181 $client_status = "developmental" ;
1182 }
1184 # Determine root uid and adm gid, used for creating log files
1185 $root_uid = getpwnam('root');
1186 $adm_gid = getgrnam('adm');
1187 if(not defined $adm_gid){
1188 $adm_gid = getgrnam('root');
1189 }
1191 daemon_log(" ", 1);
1192 daemon_log("$prg started!", 1);
1193 daemon_log("INFO: status: $client_status", 1);
1194 daemon_log("INFO: ".$client_status_hash->{$client_status}.": $client_revision", 1);
1196 # delete old DBsqlite lock files
1197 system('rm -f /tmp/gosa_si_lock*gosa-si-client*');
1199 # detect ip and mac address and complete host address
1200 $client_address = $client_ip.":".$client_port;
1201 my $network_interface= &get_interface_for_ip($client_ip);
1202 $client_mac_address= &get_mac($network_interface);
1203 daemon_log("INFO: ip address detected: $client_ip", 1);
1204 daemon_log("INFO: gosa-si-client mac address detected: $client_mac_address", 1);
1207 # import events
1208 my ($error, $result, $tmp_hash) = &import_events($event_dir);
1209 while (my ($module, $mod_event_hash) = each %$tmp_hash) {
1210 while (my ($event_name, $nothing) = each %$mod_event_hash) {
1211 $event_hash->{$event_name} = $module;
1212 }
1213 }
1215 foreach my $log_line (@$result) {
1216 if ($log_line =~ / succeed: /) {
1217 &main::daemon_log("0 DEBUG: $log_line", 7);
1218 } else {
1219 &main::daemon_log("0 ERROR: $log_line", 1);
1220 }
1221 }
1224 # compute hardware checksum
1225 $gotoHardwareChecksum= &generate_hw_digest();
1226 daemon_log("INFO: gotoHardwareChecksum detected: $gotoHardwareChecksum", 1);
1229 # create socket for incoming xml messages
1230 POE::Component::Server::TCP->new(
1231 Alias => 'gosa-si-client',
1232 Port => $client_port,
1233 ClientInput => \&server_input,
1234 );
1235 daemon_log("INFO: start socket for incoming xml messages at port '$client_port' ", 1);
1238 # prepare variables
1239 if( inet_aton($server_ip) ){ $server_ip = inet_ntoa(inet_aton($server_ip)); }
1240 if (defined $server_ip && defined $server_port) {
1241 $server_address = $server_ip.":".$server_port;
1242 }
1243 $xml = new XML::Simple();
1244 $default_server_key = $server_key;
1246 # add gosa-si-server address from config file at first position of server list
1247 my $server_check_cfg = Config::IniFiles->new( -file => $cfg_file );
1248 my $server_check = (defined($server_check_cfg))?$server_check_cfg->val( "server", "ip"):undef;
1249 if( defined $server_check ) {
1250 unshift(@servers, $server_address);
1251 my $servers_string = join(", ", @servers);
1252 daemon_log("INFO: found servers in configuration file: $servers_string", 1);
1253 } else {
1254 my @tmp_servers;
1255 if ( !$server_domain) {
1256 # Try our DNS Searchlist
1257 my @domain_list = &get_dns_domains();
1258 my $tmp_domains;
1259 my $error_string;
1260 for my $domain (@domain_list) {
1261 chomp($domain);
1262 ($tmp_domains, $error_string) = &get_server_addresses($domain);
1263 if(@$tmp_domains) {
1264 for my $tmp_server(@$tmp_domains) {
1265 push @tmp_servers, $tmp_server;
1266 }
1267 }
1268 }
1269 if (0 == @tmp_servers) {
1270 my $log_string = "no gosa-si-server found in DNS for domain: ".join(", ", @domain_list) if (@domain_list);
1271 my $log_string2 = "server addresses in domain: ".join(", ",@$tmp_domains) if (defined($tmp_domains));
1272 daemon_log("ERROR: $log_string", 1) if (defined($log_string));
1273 daemon_log("ERROR: $log_string2", 1) if (defined($log_string2));
1274 daemon_log("ERROR: $error_string", 1) if (defined($error_string));
1275 daemon_log("ERROR: please specify a gosa-si-server address or a domain in config file", 1);
1276 kill 2, $$;
1277 }
1278 } else {
1279 @tmp_servers = &get_server_addresses($server_domain);
1280 if( 0 == @tmp_servers ) {
1281 daemon_log("ERROR: no gosa-si-server found in DNS for domain '$server_domain'",1);
1282 daemon_log("ERROR: please specify a gosa-si-server address or a domain in config file", 1);
1283 kill 2, $$;
1284 }
1285 }
1287 foreach my $server (@tmp_servers) {
1288 unshift(@servers, $server);
1289 }
1290 my $servers_string = join(", ", @servers);
1291 daemon_log("INFO: found servers in DNS: $servers_string", 1);
1292 }
1295 # Open a new fifo for FAI messages to gosa-si-server
1296 if (-p $fai_com_fifo) { unlink $fai_com_fifo }
1297 POSIX::mkfifo("$fai_com_fifo", 0600);
1299 # Open a new fifo for system communication,
1300 if (-p $system_com_fifo) { unlink $system_com_fifo }
1301 if ($system_com eq "enabled")
1302 {
1303 POSIX::mkfifo("$system_com_fifo", 0600);
1304 }
1306 POE::Session->create(
1307 inline_states => {
1308 _start => \&_start,
1309 _default => \&_default,
1310 sig_handler => \&sig_handler,
1311 register_at_gosa_si_server => \®ister_at_gosa_si_server,
1313 # trigger periodical tasks
1314 trigger_new_key => \&trigger_new_key,
1315 trigger_logged_in_users_report => \&trigger_logged_in_users_report,
1316 trigger_seen_messages => \&trigger_seen_messages,
1318 # trigger non periodical tasks
1319 trigger_set_terminal_server => \&trigger_set_terminal_server,
1321 # handle records from each defined file differently
1322 fai_fifo_record => \&fai_fifo_got_record,
1323 system_fifo_record => \&system_fifo_got_record,
1325 # handle file resets and errors the same way for each file
1326 file_reset => \&generic_file_reset,
1327 file_error => \&generic_file_error,
1328 }
1329 );
1331 POE::Kernel->run();
1332 exit;