1 #!/usr/bin/perl
2 #===============================================================================
3 #
4 # FILE: gosa-server
5 #
6 # USAGE: gosa-si-client
7 #
8 # DESCRIPTION:
9 #
10 # OPTIONS: ---
11 # REQUIREMENTS: libnetaddr-ip-perl
12 # BUGS: ---
13 # NOTES:
14 # AUTHOR: (Andreas Rettenberger), <rettenberger@gonicus.de>
15 # COMPANY:
16 # VERSION: 1.0
17 # CREATED: 12.09.2007 08:54:41 CEST
18 # REVISION: ---
19 #===============================================================================
21 my $client_version = '$HeadURL$:$Rev$';
23 use strict;
24 use warnings;
25 use Getopt::Long;
26 use Config::IniFiles;
27 use POSIX;
28 use Time::HiRes qw( gettimeofday );
30 use POE qw(Component::Server::TCP Wheel::FollowTail Wheel::Run);
31 use IO::Socket::INET;
32 use NetAddr::IP;
33 use Data::Dumper;
34 use Crypt::Rijndael;
35 use GOSA::GosaSupportDaemon;
36 use Digest::MD5 qw(md5_hex md5 md5_base64);
37 use MIME::Base64;
38 use XML::Simple;
39 use File::Basename;
40 use File::Spec;
41 use Fcntl;
43 # Workaround: need pure perl to make it work with UTF-8 :-(
44 $XML::Simple::PREFERRED_PARSER= "XML::SAX::PurePerl";
46 my $client_headURL;
47 my $client_revision;
48 my $client_status;
49 my $event_dir = "/usr/lib/gosa-si/client/events";
50 use lib "/usr/lib/gosa-si/client/events";
52 my (%cfg_defaults, $foreground, $verbose, $pid_file, $procid, $pid, $log_file, $fai_logpath);
53 my ($server_ip, $server_port, $server_timeout, $server_domain, $server_key_lifetime);
54 my ($client_port, $ldap_enabled, $ldap_config, $pam_config, $nss_config);
55 my ($root_uid, $adm_gid);
56 my $xml;
57 my $event_hash;
58 my $default_server_key;
59 my @servers;
60 my $gotoHardwareChecksum;
61 my $gosa_si_client_fifo;
62 my %files_to_watch;
63 $verbose= 1;
65 # globalise variables which are used in imported events
66 our $global_kernel;
67 our $cfg_file;
68 our $opts_file;
69 our $server_address;
70 our $client_address;
71 our $client_ip;
72 our $client_mac_address;
73 our $client_dnsname;
74 our $client_force_hostname;
75 our $server_key;
77 # default variables
78 our $REGISTERED = 0;
80 # path to fifo for non-gosa-si-client messages to gosa-si-server
81 $gosa_si_client_fifo = "/var/run/gosa-si-client.socket";
82 %files_to_watch = (fifo => $gosa_si_client_fifo);
84 # in function register_at_gosa_si_server, after which period of seconds a new registration should be tried if a registration was
85 # not successful until now
86 my $delay_set_time = 10;
87 our $prg= basename($0);
89 # all n seconds the client reports logged_in users to gosa-si-server
90 my $trigger_logged_in_users_report_delay = 600;
92 # all n seconds the client reports messages seen by user
93 my $trigger_seen_messages_delay = 30;
95 # directory where all log files from installation are stored
96 my $fai_log_dir = "/var/log/fai";
98 %cfg_defaults = (
99 "general" =>
100 {"log-file" => [\$log_file, "/var/run/".$prg.".log"],
101 "pid-file" => [\$pid_file, "/var/run/".$prg.".pid"],
102 "opts-file" => [\$opts_file, "/var/run/".$prg.".opts"],
103 },
104 "client" =>
105 {"port" => [\$client_port, "20083"],
106 "ip" => [\$client_ip, "0.0.0.0"],
107 "mac-address" => [\$client_mac_address, "00:00:00:00:00:00"],
108 "server-domain" => [\$server_domain, ""],
109 "ldap" => [\$ldap_enabled, 1],
110 "ldap-config" => [\$ldap_config, "/etc/ldap/ldap.conf"],
111 "pam-config" => [\$pam_config, "/etc/pam_ldap.conf"],
112 "nss-config" => [\$nss_config, "/etc/libnss-ldap.conf"],
113 "fai-logpath" => [\$fai_logpath, "/var/log/fai/fai.log"],
114 "force-hostname" => [\$client_force_hostname, "false"],
115 },
116 "server" => {
117 "ip" => [\$server_ip, "127.0.0.1"],
118 "port" => [\$server_port, "20081"],
119 "key" => [\$server_key, ""],
120 "timeout" => [\$server_timeout, 10],
121 "key-lifetime" => [\$server_key_lifetime, 600],
122 },
124 );
127 #=== FUNCTIONS = functions =====================================================
129 sub usage {
130 print STDERR << "EOF" ;
131 usage: $prg [-hvf] [-c config]
133 -h : this (help) message
134 -c <file> : config file
135 -f : foreground, process will not be forked to background
136 -v : be verbose (multiple to increase verbosity)
138 EOF
139 print "\n" ;
140 }
142 #=== FUNCTION ================================================================
143 # NAME: check_cmdline_param
144 # PARAMETERS:
145 # RETURNS:
146 # DESCRIPTION:
147 #===============================================================================
148 sub check_cmdline_param () {
149 my $err_config;
150 my $err_counter = 0;
151 if(not defined($cfg_file)) {
152 $cfg_file = "/etc/gosa-si/client.conf";
153 if(! -r $cfg_file) {
154 $err_config = "please specify a config file";
155 $err_counter += 1;
156 }
157 }
158 if( $err_counter > 0 ) {
159 &usage( "", 1 );
160 if( defined( $err_config)) { print STDERR "$err_config\n"}
161 print STDERR "\n";
162 exit( -1 );
163 }
164 }
167 #=== FUNCTION ================================================================
168 # NAME: check_pid
169 # PARAMETERS:
170 # RETURNS:
171 # DESCRIPTION:
172 #===============================================================================
173 sub check_pid {
174 $pid = -1;
175 # Check, if we are already running
176 if( open(LOCK_FILE, "<$pid_file") ) {
177 $pid = <LOCK_FILE>;
178 if( defined $pid ) {
179 chomp( $pid );
180 if( -f "/proc/$pid/stat" ) {
181 my($stat) = `cat /proc/$pid/stat` =~ m/$pid \((.+)\).*/;
182 if( $0 eq $stat ) {
183 close( LOCK_FILE );
184 exit -1;
185 }
186 }
187 }
188 close( LOCK_FILE );
189 unlink( $pid_file );
190 }
192 # create a syslog msg if it is not to possible to open PID file
193 if (not sysopen(LOCK_FILE, $pid_file, O_WRONLY|O_CREAT|O_EXCL, 0644)) {
194 my($msg) = "Couldn't obtain lockfile '$pid_file' ";
195 if (open(LOCK_FILE, '<', $pid_file)
196 && ($pid = <LOCK_FILE>))
197 {
198 chomp($pid);
199 $msg .= "(PID $pid)\n";
200 } else {
201 $msg .= "(unable to read PID)\n";
202 }
203 if( ! ($foreground) ) {
204 openlog( $0, "cons,pid", "daemon" );
205 syslog( "warning", $msg );
206 closelog();
207 }
208 else {
209 print( STDERR " $msg " );
210 }
211 exit( -1 );
212 }
213 }
216 sub sig_int_handler {
217 my ($signal) = @_;
219 daemon_log("shutting down gosa-si-client", 1);
220 system("kill `ps -C gosa-si-client -o pid=`");
221 }
222 $SIG{INT} = \&sig_int_handler;
225 #=== FUNCTION ================================================================
226 # NAME: logging
227 # PARAMETERS: level - string - default 'info'
228 # msg - string -
229 # facility - string - default 'LOG_DAEMON'
230 # RETURNS:
231 # DESCRIPTION:
232 #===============================================================================
233 sub daemon_log {
234 # log into log_file
235 my( $msg, $level ) = @_;
236 if(not defined $msg) { return }
237 if(not defined $level) { $level = 1 }
238 if(defined $log_file){
239 my $open_log_fh = sysopen(LOG_HANDLE, $log_file, O_WRONLY | O_CREAT | O_APPEND , 0440);
240 if(not $open_log_fh) {
241 print STDERR "cannot open $log_file: $!";
242 return;
243 }
244 # check owner and group of log_file and update settings if necessary
245 my ($dev, $ino, $mode, $nlink, $uid, $gid, $rdev, $size, $atime, $mtime, $ctime, $blksize, $blocks) = stat($log_file);
246 if((not $uid eq $root_uid) || (not $gid eq $adm_gid)) {
247 chown($root_uid, $adm_gid, $log_file);
248 }
250 chomp($msg);
251 if($level <= $verbose){
252 my ($seconds, $minutes, $hours, $monthday, $month,
253 $year, $weekday, $yearday, $sommertime) = localtime(time);
254 $hours = $hours < 10 ? $hours = "0".$hours : $hours;
255 $minutes = $minutes < 10 ? $minutes = "0".$minutes : $minutes;
256 $seconds = $seconds < 10 ? $seconds = "0".$seconds : $seconds;
257 my @monthnames = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
258 $month = $monthnames[$month];
259 $monthday = $monthday < 10 ? $monthday = "0".$monthday : $monthday;
260 $year+=1900;
262 my $log_msg = "$month $monthday $hours:$minutes:$seconds $prg $msg\n";
263 print LOG_HANDLE $log_msg;
264 if( $foreground ) {
265 print STDERR $log_msg;
266 }
267 }
268 close( LOG_HANDLE );
269 }
270 }
273 #=== FUNCTION ================================================================
274 # NAME: get_mac
275 # PARAMETERS: interface name (i.e. eth0)
276 # RETURNS: (mac address)
277 # DESCRIPTION: Uses ioctl to get mac address directly from system.
278 #===============================================================================
279 sub get_mac {
280 my $ifreq= shift;
281 my $result;
282 if ($ifreq && length($ifreq) > 0) {
283 if($ifreq eq "all") {
284 if(defined($server_ip)) {
285 $result = &get_local_mac_for_remote_ip($server_ip);
286 }
287 elsif ($client_mac_address && length($client_mac_address) > 0 && !($client_mac_address eq "00:00:00:00:00:00")){
288 $result = &client_mac_address;
289 }
290 else {
291 $result = "00:00:00:00:00:00";
292 }
293 } else {
294 my $SIOCGIFHWADDR= 0x8927; # man 2 ioctl_list
296 # A configured MAC Address should always override a guessed value
297 if ($client_mac_address and length($client_mac_address) > 0 and not($client_mac_address eq "00:00:00:00:00:00")) {
298 $result= $client_mac_address;
299 }
300 else {
301 socket SOCKET, PF_INET, SOCK_DGRAM, getprotobyname('ip')
302 or die "socket: $!";
304 if(ioctl SOCKET, $SIOCGIFHWADDR, $ifreq) {
305 my ($if, $mac)= unpack 'h36 H12', $ifreq;
307 if (length($mac) > 0) {
308 $mac=~ m/^([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])$/;
309 $mac= sprintf("%s:%s:%s:%s:%s:%s", $1, $2, $3, $4, $5, $6);
310 $result = $mac;
311 }
312 }
313 }
314 }
315 }
316 return $result;
317 }
321 #=== FUNCTION ================================================================
322 # NAME: get_local_mac_for_remote_ip
323 # PARAMETERS: none (takes server_ip from global variable)
324 # RETURNS: (ip address from interface that is used for communication)
325 # DESCRIPTION: Uses ioctl to get routing table from system, checks which entry
326 # matches (defaultroute last).
327 #===============================================================================
328 sub get_local_mac_for_remote_ip {
329 my $server_ip= shift;
330 my $result= "00:00:00:00:00:00";
332 if($server_ip =~ /^[a-z][a-z0-9\.]$/i) {
333 my $ip_address = inet_ntoa(scalar gethostbyname($server_ip));
334 if(defined($ip_address) && $ip_address =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}/) {
335 # Write ip address to $server_ip variable
336 $server_ip = $ip_address;
337 }
338 }
340 if($server_ip =~ /^(\d\d?\d?\.){3}\d\d?\d?$/) {
341 my $PROC_NET_ROUTE= ('/proc/net/route');
343 open(PROC_NET_ROUTE, "<$PROC_NET_ROUTE")
344 or die "Could not open $PROC_NET_ROUTE";
346 my @ifs = <PROC_NET_ROUTE>;
348 close(PROC_NET_ROUTE);
350 # Eat header line
351 shift @ifs;
352 chomp @ifs;
353 foreach my $line(@ifs) {
354 my ($Iface,$Destination,$Gateway,$Flags,$RefCnt,$Use,$Metric,$Mask,$MTU,$Window,$IRTT)=split(/\s/, $line);
355 my $destination;
356 my $mask;
357 my ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Destination);
358 $destination= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
359 ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Mask);
360 $mask= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
361 if(new NetAddr::IP($server_ip)->within(new NetAddr::IP($destination, $mask))) {
362 # destination matches route, save mac and exit
363 $result= &get_mac($Iface);
364 last;
365 }
366 }
367 } else {
368 daemon_log("get_local_mac_for_remote_ip was called with a non-ip parameter: $server_ip", 1);
369 }
370 return $result;
371 }
374 sub generate_hw_digest {
375 my $hw_data;
376 foreach my $line (split /\n/, `cat /proc/bus/pci/devices`) {
377 $hw_data.= sprintf "%s", $line =~ /[^\s]+\s([^\s]+)\s.*/;
378 }
379 return(md5_base64($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 $error;
439 }
442 sub send_msg_to_target {
443 my ($msg, $address, $encrypt_key, $msg_header) = @_ ;
444 my $error = 0;
446 if( $msg_header ) { $msg_header = "'$msg_header'-"; }
447 else { $msg_header = ""; }
449 # Memorize own source address
450 $msg =~ /<source>(\S+)<\/source>/;
451 my $own_source_address = $1;
453 # encrypt xml msg
454 my $crypted_msg = &encrypt_msg($msg, $encrypt_key);
456 # opensocket
457 my $socket = &open_socket($address);
458 if( !$socket ) {
459 daemon_log("WARNING: cannot send ".$msg_header."msg to $address , host not reachable", 3);
460 if ($REGISTERED == 1) {
461 $REGISTERED = 0; # if server is not available, cause reregistering
462 daemon_log("INFO: cause reregistering at gosa-si-server", 5);
463 $global_kernel->yield('register_at_gosa_si_server');
465 }
466 $error++;
467 }
469 # send xml msg
470 if( $error == 0 ) {
471 print $socket $crypted_msg.";$own_source_address\n";
472 daemon_log("INFO: send ".$msg_header."msg to $address", 5);
473 daemon_log("DEBUG: message:\n$msg", 9);
474 }
476 # close socket in any case
477 if( $socket ) {
478 close $socket;
479 }
481 return $error;
482 }
485 sub write_to_file {
486 my ($string, $file) = @_;
487 my $error = 0;
489 if( not defined $file || not -f $file ) {
490 &main::daemon_log("ERROR: $prg: check '-f file' failed: $file", 1);
491 $error++;
492 }
493 if( not defined $string || 0 == length($string)) {
494 &main::daemon_log("ERROR: $prg: empty string to write to file '$file'", 1);
495 $error++;
496 }
498 if( $error == 0 ) {
500 chomp($string);
502 if (open(FILE, ">> $file")){
503 print FILE $string."\n";
504 close(FILE);
505 }
506 }
508 return;
509 }
512 sub open_socket {
513 my ($PeerAddr, $PeerPort) = @_ ;
514 if(defined($PeerPort)){
515 $PeerAddr = $PeerAddr.":".$PeerPort;
516 }
517 my $socket;
518 $socket = new IO::Socket::INET(PeerAddr => $PeerAddr,
519 Porto => "tcp",
520 Type => SOCK_STREAM,
521 Timeout => 5,
522 );
523 if(not defined $socket) {
524 return;
525 }
526 &daemon_log("DEBUG: open_socket: $PeerAddr", 7);
527 return $socket;
528 }
531 #=== FUNCTION ================================================================
532 # NAME: register_at_server
533 # PARAMETERS:
534 # RETURNS:
535 # DESCRIPTION:
536 #===============================================================================
537 sub register_at_gosa_si_server {
538 my ($kernel) = $_[KERNEL];
539 my $try_to_register = 0;
541 # if client is already registered, stop registration process
542 if ($REGISTERED) {
543 $kernel->delay('register_at_gosa_si_server');
545 # client is not registered, start registration process
546 } else {
547 # clear all other triggered events and wait till registration was successful
548 $kernel->delay('trigger_new_key');
550 # create new passwd and ciphering object for client-server communication
551 $server_key = &create_passwd();
553 my $events = join( ",", keys %{$event_hash} );
554 while(1) {
555 $try_to_register++;
557 # after one complete round through all server, stop trying to register
558 if( $try_to_register > @servers ) { last; }
560 # fetch first gosa-si-server from @servers
561 # append shifted gosa-si-server at the end of @servers, so looking for servers never stop if
562 # a registration never occured
563 my $server = shift(@servers);
564 push( @servers, $server );
566 # Check if our ip is resolvable - if not: don't try to register
567 if(!(defined($server) && $server =~ m/^[0-9\.]*?:.*$/)) {
568 &main::daemon_log("ERROR: Server with address '".defined($server)?$server:""."' is invalid!", 1);
569 if (length(@servers) == 1) {
570 &main::daemon_log("ERROR: No valid servers found!", 1);
571 exit(1);
572 }
573 }
575 # Check if our ip is resolvable - if not: don't try to register
576 my $ip= &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
577 my $dnsname= gethostbyaddr(inet_aton($ip), AF_INET);
578 if(!defined($dnsname)) {
579 if( defined($client_force_hostname) && $client_force_hostname eq "true") {
580 $dnsname = `hostname`;
581 } else {
582 &write_to_file("goto-error-dns:$ip", $fai_logpath);
583 &main::daemon_log("ERROR: ip is not resolvable, no registration possible. Write 'goto-error-dns:$ip' to $fai_logpath", 1);
584 exit(1);
585 }
586 }
588 # create registration msg
589 my $local_ip = &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
590 my $local_mac = &get_local_mac_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
591 my $register_hash = &create_xml_hash("here_i_am", $local_ip.":".$client_port, $server);
592 &add_content2xml_hash($register_hash, "new_passwd", $server_key);
593 &add_content2xml_hash($register_hash, "mac_address", $local_mac);
594 &add_content2xml_hash($register_hash, "events", $events);
595 &add_content2xml_hash($register_hash, "client_status", $client_status);
596 &add_content2xml_hash($register_hash, "client_revision", $client_revision);
597 &add_content2xml_hash($register_hash, "gotoHardwareChecksum", $gotoHardwareChecksum);
598 &add_content2xml_hash($register_hash, "key_lifetime", $server_key_lifetime);
600 # Add $HOSTNAME from ENV if force-hostname is set
601 if( defined($client_force_hostname) && $client_force_hostname eq "true") {
602 if(defined($ENV{HOSTNAME}) && length($ENV{HOSTNAME}) >0 ) {
603 &add_content2xml_hash($register_hash, "force-hostname", $ENV{HOSTNAME});
604 } else {
605 &main::daemon_log("force-hostname was set to true, but no \$HOSTNAME was found in Environment!",0);
606 }
607 }
609 # send xml hash to server with general server passwd
610 my $res = &send_msg_hash_to_target($register_hash, $server, $default_server_key);
612 # if delivery of registration msg succeed
613 if($res eq "0") {
614 # reset try_to_register
615 $try_to_register = 0;
617 # Set fixed client address and mac address
618 $client_ip= &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
619 $client_address= "$client_ip:$client_port";
620 $client_mac_address = $local_mac;
621 $client_dnsname = $dnsname;
622 last;
624 # delivery of registration msg failed
625 } else {
626 # wait 1 sec until trying to register again
627 sleep(1);
628 next;
629 }
631 } # end of while
632 # one circle through all servers finished and no registration succeed
633 if ( $try_to_register >= @servers ) {
634 &write_to_file("gosa-si-no-server-available", $fai_logpath);
635 $kernel->delay_set('register_at_gosa_si_server', $delay_set_time);
637 # delivery of registraion msg succeed, waiting for server response
638 } else {
639 daemon_log("INFO: waiting for msg 'register_at_gosa_si_server'",5);
640 $kernel->delay_set('register_at_gosa_si_server', $delay_set_time);
641 # clear old settings and set it again
642 $kernel->delay('trigger_new_key');
643 $kernel->delay_set('trigger_new_key', $server_key_lifetime);
644 }
646 }
647 return;
648 }
651 sub check_key_and_xml_validity {
652 my ($crypted_msg, $module_key) = @_;
654 my $msg;
655 my $msg_hash;
656 eval{
657 $msg = &decrypt_msg($crypted_msg, $module_key);
658 &main::daemon_log("decrypted_msg: \n$msg", 9);
660 $msg_hash = $xml->XMLin($msg, ForceArray=>1);
662 ##############
663 # check header
664 my $header_l = $msg_hash->{'header'};
665 if( 1 != @{$header_l} ) {
666 die 'no or more headers specified';
667 }
668 my $header = @{$header_l}[0];
669 if( 0 == length $header) {
670 die 'header has length 0';
671 }
673 ##############
674 # check source
675 my $source_l = $msg_hash->{'source'};
676 if( 1 != @{$source_l} ) {
677 die 'no or more than 1 sources specified';
678 }
679 my $source = @{$source_l}[0];
680 if( 0 == length $source) {
681 die 'source has length 0';
682 }
683 unless( $source =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ) {
684 die "source '$source' is neither a complete ip-address with port nor 'GOSA'";
685 }
687 ##############
688 # check target
689 my $target_l = $msg_hash->{'target'};
690 if( 1 != @{$target_l} ) {
691 die 'no or more than 1 targets specified ';
692 }
693 my $target = @{$target_l}[0];
694 if( 0 == length $target) {
695 die 'target has length 0 ';
696 }
697 unless( $target =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ){
698 die "source is neither a complete ip-address with port nor 'GOSA'";
699 }
700 };
701 if($@) {
702 &main::daemon_log("WARNING: do not understand the message or msg is not gosa-si envelope conform:", 5);
703 &main::daemon_log("$@", 8);
704 $msg = undef;
705 $msg_hash = undef;
706 }
708 return ($msg, $msg_hash);
709 }
712 sub check_outgoing_xml_validity {
713 my ($msg) = @_;
715 my $msg_hash;
716 eval{
717 $msg_hash = $xml->XMLin($msg, ForceArray=>1);
719 ##############
720 # check header
721 my $header_l = $msg_hash->{'header'};
722 if( 1 != @{$header_l} ) {
723 die 'no or more than one headers specified';
724 }
725 my $header = @{$header_l}[0];
726 if( 0 == length $header) {
727 die 'header has length 0';
728 }
730 ##############
731 # check source
732 my $source_l = $msg_hash->{'source'};
733 if( 1 != @{$source_l} ) {
734 die 'no or more than 1 sources specified';
735 }
736 my $source = @{$source_l}[0];
737 if( 0 == length $source) {
738 die 'source has length 0';
739 }
740 unless( $source =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ||
741 $source =~ /^GOSA$/i ) {
742 die "source '$source' is neither a complete ip-address with port";
743 }
745 ##############
746 # check target
747 my $target_l = $msg_hash->{'target'};
748 if( 1 != @{$target_l} ) {
749 die "no or more than one targets specified";
750 }
751 foreach my $target (@$target_l) {
752 if( 0 == length $target) {
753 die "target has length 0";
754 }
755 unless( $target =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ) {
756 die "target '$target' is not a complete ip-address with port or a valid target name";
757 }
758 }
759 };
760 if($@) {
761 daemon_log("WARNING: outgoing msg is not gosa-si envelope conform", 5);
762 daemon_log("$@ $msg", 8);
763 $msg_hash = undef;
764 }
765 return ($msg_hash);
766 }
769 sub trigger_new_key {
770 my ($kernel) = $_[KERNEL] ;
772 my $msg = "<xml><header>new_key</header><source>$client_address</source><target>$client_address</target></xml>";
773 &send_msg_to_target($msg, $client_address, $server_key, 'new_key');
775 $kernel->delay_set('trigger_new_key', $server_key_lifetime);
776 }
779 sub trigger_logged_in_users_report {
780 my ($kernel) = $_[KERNEL] ;
782 # just do if client is registered already
783 if( $REGISTERED ) {
784 my $result = qx(/usr/bin/users);
785 my @logged_in_user_list;
786 if( defined $result ) {
787 chomp($result);
788 @logged_in_user_list = split(/\s/, $result);
789 }
791 system("echo 'CURRENTLY_LOGGED_IN ".join(" ", @logged_in_user_list)."' > /var/run/gosa-si-client.socket");
792 $kernel->delay_set('trigger_logged_in_users_report', $trigger_logged_in_users_report_delay);
793 } else {
794 # try it in 10 sec again
795 $kernel->delay_set('trigger_logged_in_users_report', 10);
796 }
797 }
800 sub trigger_seen_messages {
801 my ($kernel) = $_[KERNEL] ;
803 # Select all files under /tmp with prefix 'goto_notify'
804 my $goto_dir = "/tmp";
805 opendir(DIR, $goto_dir);
806 my @goto_files = grep { /^goto_notify_/ && -f "$goto_dir/$_" } readdir(DIR);
807 closedir DIR;
809 # Check if file has 'seen' tag
810 foreach my $goto_file (@goto_files) {
811 open(FILE, "$goto_dir/$goto_file");
812 my @lines = <FILE>;
813 close FILE;
815 my $source;
816 my $target;
817 my $usr;
818 my $subject;
819 my $message;
820 my $seen = 0;
821 chomp(@lines);
822 foreach my $line (@lines) {
823 if ($line =~ /^source:([\S\s]*)$/) {
824 $source = $1
825 }
826 if ($line =~ /^target:([\S\s]*)$/) {
827 $target = $1;
828 }
829 if ($line =~ /^usr:([\S\s]*)$/) {
830 $usr = $1;
831 }
832 if ($line =~ /^subject:([\S\s]*)$/) {
833 $subject = $1;
834 }
835 if ($line =~ /^message:([\S\s]*)$/) {
836 $message = $1;
837 }
838 if ($line =~ /^seen$/) {
839 $seen++;
840 }
841 }
843 # Send 'confirm_usr_msg' back to msg-hosting server
844 if ($seen) {
845 my %data = ('usr'=>$usr, 'subject'=>$subject, 'message'=>$message);
846 my $confirm_msg = &build_msg("confirm_usr_msg", $target, $source, \%data);
847 my $send_error = &send_msg_to_target($confirm_msg, $server_address, $server_key);
849 # Delete file
850 if (not $send_error) {
851 system("rm $goto_dir/$goto_file");
852 }
853 }
854 }
856 $kernel->delay_set('trigger_seen_messages', $trigger_seen_messages_delay);
858 return;
859 }
862 sub generic_file_error {
863 my ( $heap, $operation, $errno, $error_string, $wheel_id ) =
864 @_[ HEAP, ARG0, ARG1, ARG2, ARG3 ];
866 my $service = $heap->{services}->{$wheel_id};
867 daemon_log("ERROR: '$service' watcher $operation error $errno: $error_string", 1);
868 daemon_log("ERROR: shutting down '$service' file watcher", 1);
870 delete $heap->{services}->{$wheel_id};
871 delete $heap->{watchers}->{$wheel_id};
872 return;
873 }
876 sub fifo_got_record {
877 my $file_record = $_[ARG0];
878 my $header;
879 my $content = "";
880 daemon_log("DEBUG: fifo got record: $file_record", 7);
882 $file_record =~ /^(\S+)[ ]?([\s\S]+)?$/;
883 if( defined $1 ) {
884 $header = $1;
885 } else {
886 return;
887 }
889 if( defined $2 ) {
890 $content = $2;
891 }
893 my $clmsg_hash = &create_xml_hash("CLMSG_$header", $client_address, $server_address, $content);
894 &add_content2xml_hash($clmsg_hash, "macaddress", $client_mac_address);
895 my $utc_ts = &main::get_utc_time();
896 &add_content2xml_hash($clmsg_hash, "timestamp", $utc_ts);
897 my $clmsg = &create_xml_string($clmsg_hash);
898 &send_msg_to_target($clmsg, $server_address, $server_key, "CLMSG_$header");
900 # if installation finished, save all log files
901 if ($file_record eq "TASKBEGIN finish") {
902 &save_fai_log($fai_log_dir);
903 }
905 return;
906 }
909 sub save_fai_log {
910 my ($fai_log_dir) = @_ ;
911 my $FAI_DIR;
913 # Directory for log files after a softupdate
914 my $log_dir = File::Spec->catdir($fai_log_dir, "localhost/last");
916 if (not -d $log_dir) {
917 # Directory for log files after a new installation
918 $log_dir = "/tmp/fai";
919 if (not -d $log_dir) {
920 daemon_log("ERROR: cannot open directory $log_dir", 1);
921 return;
922 }
923 }
925 opendir($FAI_DIR, "$log_dir");
926 my @log_files = readdir($FAI_DIR);
927 closedir($FAI_DIR);
929 my @log_list;
930 foreach my $log_file (@log_files) {
931 if( $log_file eq "." || $log_file eq ".." ) { next; }
933 my $log = "log_file:$log_file:";
934 $log_file = File::Spec->catfile( $log_dir, $log_file );
936 if (not -f $log_file) {
937 daemon_log("ERROR: cannot read $log_file", 1);
938 next;
939 }
941 open(FILE, "<$log_file");
942 my @lines = <FILE> ;
943 close (FILE);
944 my $log_string = join("", @lines);
945 $log .= &encode_base64($log_string);
946 push(@log_list, $log);
947 }
949 my $all_log_string = join("\n", @log_list);
950 my $msg_hash = &create_xml_hash("CLMSG_save_fai_log", $client_address, $server_address, $all_log_string);
951 &add_content2xml_hash($msg_hash, "macaddress", $client_mac_address);
952 my $msg = &create_xml_string($msg_hash);
953 &send_msg_to_target($msg, $server_address, $server_key, "CLMSG_save_fai_log");
955 }
958 sub sig_handler {
959 my ($kernel, $signal) = @_[KERNEL, ARG0] ;
960 daemon_log("0 INFO got signal '$signal'", 1);
961 $kernel->sig_handled();
962 return;
963 }
966 sub _start {
967 my ($kernel, $heap) = @_[KERNEL, HEAP];
968 $kernel->alias_set('client_session');
969 $global_kernel = $kernel; # this is used to throw events at each point of the skript
971 $kernel->sig(USR1 => "sig_handler");
973 # force a registration at a gosa-si-server
974 $kernel->yield('register_at_gosa_si_server');
976 # install all file watcher defined
977 while( my($name, $file) = each %files_to_watch ) {
978 my $watcher = POE::Wheel::FollowTail->new(
979 Filename => $file,
980 InputEvent => $name."_record",
981 # ResetEvent => "file_reset",
982 ErrorEvent => "file_error",
983 );
984 # $heap->{tail} = POE::Wheel::Run->new(
985 # Program => [ "/usr/bin/tail", "-f", $file ],
986 # StdoutEvent => $file_name."_record",
987 # );
988 $heap->{services}->{ $watcher->ID } = $name;
989 $heap->{watchers}->{ $watcher->ID } = $watcher;
990 }
991 $kernel->yield('trigger_logged_in_users_report');
992 $kernel->yield('trigger_seen_messages');
993 }
996 sub _default {
997 daemon_log("ERROR: can not handle incoming msg with header '$_[ARG0]'", 1);
998 return;
999 }
1002 sub server_input {
1003 my ($kernel, $heap, $input, $wheel) = @_[KERNEL, HEAP, ARG0, ARG1];
1004 my $remote_ip = $heap->{'remote_ip'},
1005 my $error = 0;
1006 my $answer;
1009 daemon_log("INFO: Incoming msg from '$remote_ip'", 5);
1010 daemon_log("DEBUG: Incoming msg:\n$input\n", 9);
1012 my ($msg, $msg_hash) = &check_key_and_xml_validity($input, $server_key);
1013 if( (!$msg) || (!$msg_hash) ) {
1014 daemon_log("WARNING: Deciphering of incoming msg failed", 3);
1015 if($server_address =~ /$remote_ip/) {
1016 # got a msg from gosa-si-server which can not be decrypted, may the secrete not up-to-date
1017 # cause a reregistering with a new secrete handshake
1018 daemon_log("WARNING: Message from gosa-si-server could not be understood, cause reregistering at server", 3);
1020 # if client is alread in a registration process, that means not registered, do nothing
1021 # if not, cause re-registration
1022 if (not $REGISTERED) {
1023 &daemon_log("WARNING: gosa-si-client is already in a registration process so ignore this message", 3);
1024 } else {
1025 $REGISTERED = 0;
1026 $kernel->post('client_session', 'register_at_gosa_si_server');
1027 }
1028 }
1029 $error++;
1030 }
1033 ######################
1034 # process incoming msg
1035 if( $error == 0 ) {
1036 my $header = @{$msg_hash->{header}}[0];
1037 my $source = @{$msg_hash->{source}}[0];
1039 if( exists $event_hash->{$header} ) {
1041 # a event exists with the header as name
1042 daemon_log("INFO: found event '$header' at event-module '".$event_hash->{$header}."'", 5);
1043 no strict 'refs';
1044 $answer = &{$event_hash->{$header}."::$header"}($msg, $msg_hash);
1045 }
1046 else {
1047 daemon_log("WARNING: no event '$header' found in event modules under $event_dir", 3);
1048 }
1049 }
1051 ########
1052 # answer
1053 if( $answer ) {
1055 #check gosa-si envelope validity
1056 my $answer_hash = &check_outgoing_xml_validity($answer);
1058 if( $answer_hash ) {
1059 # answer is valid
1061 # preprocessing
1062 if( $answer =~ "<header>registered</header>") {
1063 # set registered flag to true to stop sending further registered msgs
1064 $REGISTERED = 1;
1065 }
1066 else {
1067 $answer =~ /<header>(\S+)<\/header>/;
1068 &send_msg_to_target($answer, $server_address, $server_key, $1);
1069 }
1071 # postprocessing
1072 if( $answer =~ "<header>new_key</header>") {
1073 # set new key to global variable
1074 $answer =~ /<new_key>(\S*?)<\/new_key>/;
1075 my $new_key = $1;
1076 $server_key = $new_key;
1077 }
1078 }
1080 }
1082 return;
1083 }
1086 #==== MAIN = main ==============================================================
1087 # parse commandline options
1088 Getopt::Long::Configure( "bundling" );
1089 GetOptions("h|help" => \&usage,
1090 "c|config=s" => \$cfg_file,
1091 "f|foreground" => \$foreground,
1092 "v|verbose+" => \$verbose,
1093 );
1095 # read and set config parameters
1096 &check_cmdline_param ;
1097 &read_configfile($cfg_file, %cfg_defaults);
1098 &check_pid;
1101 # forward error messages to logfile
1102 if ( ! $foreground ) {
1103 open( STDIN, '+>/dev/null' );
1104 open( STDOUT, '+>&STDIN' );
1105 open( STDERR, '+>&STDIN' );
1106 }
1108 # Just fork, if we are not in foreground mode
1109 if( ! $foreground ) {
1110 chdir '/' or die "Can't chdir to /: $!";
1111 $pid = fork;
1112 setsid or die "Can't start a new session: $!";
1113 umask 0;
1114 } else {
1115 $pid = $$;
1116 }
1118 # Do something useful - put our PID into the pid_file
1119 if( 0 != $pid ) {
1120 open( LOCK_FILE, ">$pid_file" );
1121 print LOCK_FILE "$pid\n";
1122 close( LOCK_FILE );
1123 if( !$foreground ) {
1124 exit( 0 )
1125 };
1126 }
1128 # parse head url and revision from svn
1129 my $client_status_hash = { 'developmental'=>'revision', 'stable'=>'release'};
1130 $client_version =~ /^\$HeadURL: (\S+) \$:\$Rev: (\d+) \$$/;
1131 $client_headURL = defined $1 ? $1 : 'unknown' ;
1132 $client_revision = defined $2 ? $2 : 'unknown' ;
1133 if ($client_headURL =~ /\/tag\// ||
1134 $client_headURL =~ /\/branches\// ) {
1135 $client_status = "stable";
1136 } else {
1137 $client_status = "developmental" ;
1138 }
1140 # Determine root uid and adm gid, used for creating log files
1141 $root_uid = getpwnam('root');
1142 $adm_gid = getgrnam('adm');
1143 if(not defined $adm_gid){
1144 $adm_gid = getgrnam('root');
1145 }
1148 daemon_log(" ", 1);
1149 daemon_log("$prg started!", 1);
1150 daemon_log("INFO: status: $client_status", 1);
1151 daemon_log("INFO: ".$client_status_hash->{$client_status}.": $client_revision", 1);
1153 # delete old DBsqlite lock files
1154 system('rm -f /tmp/gosa_si_lock*gosa-si-client*');
1156 # detect ip and mac address and complete host address
1157 $client_address = $client_ip.":".$client_port;
1158 my $network_interface= &get_interface_for_ip($client_ip);
1159 $client_mac_address= &get_mac($network_interface);
1160 daemon_log("INFO: ip address detected: $client_ip", 1);
1161 daemon_log("INFO: gosa-si-client mac address detected: $client_mac_address", 1);
1164 # import events
1165 my ($error, $result, $tmp_hash) = &import_events($event_dir);
1166 while (my ($module, $mod_event_hash) = each %$tmp_hash) {
1167 while (my ($event_name, $nothing) = each %$mod_event_hash) {
1168 $event_hash->{$event_name} = $module;
1169 }
1170 }
1172 foreach my $log_line (@$result) {
1173 if ($log_line =~ / succeed: /) {
1174 &main::daemon_log("0 DEBUG: $log_line", 7);
1175 } else {
1176 &main::daemon_log("0 ERROR: $log_line", 1);
1177 }
1178 }
1181 # compute hardware checksum
1182 $gotoHardwareChecksum= &generate_hw_digest();
1183 daemon_log("INFO: gotoHardwareChecksum detected: $gotoHardwareChecksum", 1);
1186 # create socket for incoming xml messages
1187 POE::Component::Server::TCP->new(
1188 Alias => 'gosa-si-client',
1189 Port => $client_port,
1190 ClientInput => \&server_input,
1191 );
1192 daemon_log("INFO: start socket for incoming xml messages at port '$client_port' ", 1);
1195 # prepare variables
1196 if( inet_aton($server_ip) ){ $server_ip = inet_ntoa(inet_aton($server_ip)); }
1197 if (defined $server_ip && defined $server_port) {
1198 $server_address = $server_ip.":".$server_port;
1199 }
1200 $xml = new XML::Simple();
1201 $default_server_key = $server_key;
1204 # add gosa-si-server address from config file at first position of server list
1205 my $server_check_cfg = Config::IniFiles->new( -file => $cfg_file );
1206 my $server_check = (defined($server_check_cfg))?$server_check_cfg->val( "server", "ip"):undef;
1207 if( defined $server_check ) {
1208 unshift(@servers, $server_address);
1209 my $servers_string = join(", ", @servers);
1210 daemon_log("INFO: found servers in configuration file: $servers_string", 1);
1211 } else {
1212 my @tmp_servers;
1213 if ( !$server_domain) {
1214 # Try our DNS Searchlist
1215 my @domain_list = &get_dns_domains();
1216 my $tmp_domains;
1217 my $error_string;
1218 for my $domain (@domain_list) {
1219 chomp($domain);
1220 ($tmp_domains, $error_string) = &get_server_addresses($domain);
1221 if(@$tmp_domains) {
1222 for my $tmp_server(@$tmp_domains) {
1223 push @tmp_servers, $tmp_server;
1224 }
1225 }
1226 }
1227 if (0 == @tmp_servers) {
1228 my $log_string = "no gosa-si-server found!";
1229 $log_string .= "\n\tdetermined domains out of /etc/resolv.conf: ".join(", ", @domain_list) if (@domain_list);
1230 $log_string .= "\n\tdetermined server addresses in domains: ".join(", ",@$tmp_domains) if (defined($tmp_domains));
1231 daemon_log("ERROR: $log_string", 1) if (defined($log_string));
1232 daemon_log("ERROR: $error_string", 1) if (defined($error_string));
1233 daemon_log("ERROR: please specify a gosa-si-server address or a domain in config file", 1);
1234 kill 2, $$;
1235 }
1236 } else {
1237 @tmp_servers = &get_server_addresses($server_domain);
1238 if( 0 == @tmp_servers ) {
1239 daemon_log("ERROR: no gosa-si-server found in DNS for domain '$server_domain'",1);
1240 daemon_log("ERROR: please specify a gosa-si-server address or a domain in config file", 1);
1241 kill 2, $$;
1242 }
1243 }
1245 foreach my $server (@tmp_servers) {
1246 unshift(@servers, $server);
1247 }
1248 my $servers_string = join(", ", @servers);
1249 daemon_log("INFO: found servers in DNS: $servers_string", 1);
1250 }
1253 # open fifo for non-gosa-si-client-msgs to gosa-si-server
1254 POSIX::mkfifo("$gosa_si_client_fifo", "0600");
1257 POE::Session->create(
1258 inline_states => {
1259 _start => \&_start,
1260 _default => \&_default,
1261 sig_handler => \&sig_handler,
1262 register_at_gosa_si_server => \®ister_at_gosa_si_server,
1264 # trigger periodical tasks
1265 trigger_new_key => \&trigger_new_key,
1266 trigger_logged_in_users_report => \&trigger_logged_in_users_report,
1267 trigger_seen_messages => \&trigger_seen_messages,
1269 # handle records from each defined file differently
1270 fifo_record => \&fifo_got_record,
1272 # handle file resets and errors the same way for each file
1273 file_reset => \&generic_file_reset,
1274 file_error => \&generic_file_error,
1275 }
1276 );
1278 POE::Kernel->run();
1279 exit;