75424cef3f940e9bd3984e1fed0177697daadb79
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 use strict;
22 use warnings;
23 use utf8;
24 use Getopt::Long;
25 use Config::IniFiles;
26 use POSIX;
27 use Time::HiRes qw( gettimeofday );
29 use POE qw(Component::Server::TCP Wheel::FollowTail);
30 use IO::Socket::INET;
31 use NetAddr::IP;
32 use Data::Dumper;
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 Net::DNS;
39 use File::Basename;
40 use File::Spec;
42 my $event_dir = "/usr/lib/gosa-si/client/events";
43 use lib "/usr/lib/gosa-si/client/events";
45 my (%cfg_defaults, $foreground, $verbose, $pid_file, $procid, $pid, $log_file, $fai_logpath);
46 my ($server_ip, $server_port, $server_key, $server_timeout, $server_domain, $server_key_lifetime);
47 my ($client_ip, $client_port, $client_mac_address, $ldap_enabled, $ldap_config, $pam_config, $nss_config);
48 my $xml;
49 my $default_server_key;
50 my $event_hash;
51 my @servers;
52 my $gotoHardwareChecksum;
53 my $gosa_si_client_fifo;
54 my %files_to_watch;
55 $verbose= 1;
57 # globalise variables which are used in imported events
58 our $cfg_file;
59 our $opts_file;
60 our $server_address;
61 our $client_address;
62 our $client_ip;
63 our $client_mac_address;
64 our $client_dnsname;
65 our $client_force_hostname;
66 our $server_key;
68 # default variables
69 our $REGISTERED = 0;
71 # path to fifo for non-gosa-si-client messages to gosa-si-server
72 $gosa_si_client_fifo = "/var/run/gosa-si-client.socket";
73 %files_to_watch = (fifo => $gosa_si_client_fifo);
75 # in function register_at_gosa_si_server, after which period of seconds a new registration should be tried if a registration was
76 # not successful until now
77 my $delay_set_time = 5;
78 our $prg= basename($0);
80 # all x seconds the client reports logged_in users to gosa-si-server
81 my $trigger_logged_in_users_report_delay = 600;
83 # directory where all log files from installation are stored
84 my $fai_log_dir = "/tmp/fai";
86 %cfg_defaults = (
87 "general" =>
88 {"log-file" => [\$log_file, "/var/run/".$prg.".log"],
89 "pid-file" => [\$pid_file, "/var/run/".$prg.".pid"],
90 "opts-file" => [\$opts_file, "/var/run/".$prg.".opts"],
91 },
92 "client" =>
93 {"port" => [\$client_port, "20083"],
94 "ip" => [\$client_ip, "0.0.0.0"],
95 "mac-address" => [\$client_mac_address, "00:00:00:00:00:00"],
96 "server-domain" => [\$server_domain, ""],
97 "ldap" => [\$ldap_enabled, 1],
98 "ldap-config" => [\$ldap_config, "/etc/ldap/ldap.conf"],
99 "pam-config" => [\$pam_config, "/etc/pam_ldap.conf"],
100 "nss-config" => [\$nss_config, "/etc/libnss-ldap.conf"],
101 "fai-logpath" => [\$fai_logpath, "/var/log/fai/fai.log"],
102 "force-hostname" => [\$client_force_hostname, "false"],
103 },
104 "server" => {
105 "ip" => [\$server_ip, "127.0.0.1"],
106 "port" => [\$server_port, "20081"],
107 "key" => [\$server_key, ""],
108 "timeout" => [\$server_timeout, 10],
109 "key-lifetime" => [\$server_key_lifetime, 600],
110 },
112 );
115 #=== FUNCTIONS = functions =====================================================
117 #=== FUNCTION ================================================================
118 # NAME: check_cmdline_param
119 # PARAMETERS:
120 # RETURNS:
121 # DESCRIPTION:
122 #===============================================================================
123 sub check_cmdline_param () {
124 my $err_config;
125 my $err_counter = 0;
126 if(not defined($cfg_file)) {
127 $cfg_file = "/etc/gosa-si/client.conf";
128 if(! -r $cfg_file) {
129 $err_config = "please specify a config file";
130 $err_counter += 1;
131 }
132 }
133 if( $err_counter > 0 ) {
134 &usage( "", 1 );
135 if( defined( $err_config)) { print STDERR "$err_config\n"}
136 print STDERR "\n";
137 exit( -1 );
138 }
139 }
142 #=== FUNCTION ================================================================
143 # NAME: read_configfile
144 # PARAMETERS: cfg_file - string -
145 # RETURNS:
146 # DESCRIPTION:
147 #===============================================================================
148 sub read_configfile {
149 my ($cfg_file, %cfg_defaults) = @_ ;
150 my $cfg;
151 if( defined( $cfg_file) && ( length($cfg_file) > 0 )) {
152 if( -r $cfg_file ) {
153 $cfg = Config::IniFiles->new( -file => $cfg_file );
154 } else {
155 print STDERR "Couldn't read config file!";
156 }
157 } else {
158 $cfg = Config::IniFiles->new() ;
159 }
160 foreach my $section (keys %cfg_defaults) {
161 foreach my $param (keys %{$cfg_defaults{ $section }}) {
162 my $pinfo = $cfg_defaults{ $section }{ $param };
163 ${@$pinfo[ 0 ]} = $cfg->val( $section, $param, @$pinfo[ 1 ] );
164 }
165 }
166 }
169 #=== FUNCTION ================================================================
170 # NAME: check_pid
171 # PARAMETERS:
172 # RETURNS:
173 # DESCRIPTION:
174 #===============================================================================
175 sub check_pid {
176 $pid = -1;
177 # Check, if we are already running
178 if( open(LOCK_FILE, "<$pid_file") ) {
179 $pid = <LOCK_FILE>;
180 if( defined $pid ) {
181 chomp( $pid );
182 if( -f "/proc/$pid/stat" ) {
183 my($stat) = `cat /proc/$pid/stat` =~ m/$pid \((.+)\).*/;
184 if( $0 eq $stat ) {
185 close( LOCK_FILE );
186 exit -1;
187 }
188 }
189 }
190 close( LOCK_FILE );
191 unlink( $pid_file );
192 }
194 # create a syslog msg if it is not to possible to open PID file
195 if (not sysopen(LOCK_FILE, $pid_file, O_WRONLY|O_CREAT|O_EXCL, 0644)) {
196 my($msg) = "Couldn't obtain lockfile '$pid_file' ";
197 if (open(LOCK_FILE, '<', $pid_file)
198 && ($pid = <LOCK_FILE>))
199 {
200 chomp($pid);
201 $msg .= "(PID $pid)\n";
202 } else {
203 $msg .= "(unable to read PID)\n";
204 }
205 if( ! ($foreground) ) {
206 openlog( $0, "cons,pid", "daemon" );
207 syslog( "warning", $msg );
208 closelog();
209 }
210 else {
211 print( STDERR " $msg " );
212 }
213 exit( -1 );
214 }
215 }
218 sub sig_int_handler {
219 my ($signal) = @_;
221 daemon_log("shutting down gosa-si-server", 1);
222 exit(1);
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 $log_file){
241 open(LOG_HANDLE, ">>$log_file");
242 if(not defined open( LOG_HANDLE, ">>$log_file" )) {
243 print STDERR "cannot open $log_file: $!";
244 return }
245 chomp($msg);
246 if($level <= $verbose){
247 my ($seconds, $minutes, $hours, $monthday, $month,
248 $year, $weekday, $yearday, $sommertime) = localtime(time);
249 $hours = $hours < 10 ? $hours = "0".$hours : $hours;
250 $minutes = $minutes < 10 ? $minutes = "0".$minutes : $minutes;
251 $seconds = $seconds < 10 ? $seconds = "0".$seconds : $seconds;
252 my @monthnames = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
253 $month = $monthnames[$month];
254 $monthday = $monthday < 10 ? $monthday = "0".$monthday : $monthday;
255 $year+=1900;
257 my $log_msg = "$month $monthday $hours:$minutes:$seconds $prg $msg\n";
258 print LOG_HANDLE $log_msg;
259 if( $foreground ) {
260 print STDERR $log_msg;
261 }
262 }
263 close( LOG_HANDLE );
264 }
265 }
268 #=== FUNCTION ================================================================
269 # NAME: get_interfaces
270 # PARAMETERS: none
271 # RETURNS: (list of interfaces)
272 # DESCRIPTION: Uses proc fs (/proc/net/dev) to get list of interfaces.
273 #===============================================================================
274 sub get_interfaces {
275 my @result;
276 my $PROC_NET_DEV= ('/proc/net/dev');
278 open(PROC_NET_DEV, "<$PROC_NET_DEV")
279 or die "Could not open $PROC_NET_DEV";
281 my @ifs = <PROC_NET_DEV>;
283 close(PROC_NET_DEV);
285 # Eat first two line
286 shift @ifs;
287 shift @ifs;
289 chomp @ifs;
290 foreach my $line(@ifs) {
291 my $if= (split /:/, $line)[0];
292 $if =~ s/^\s+//;
293 push @result, $if;
294 }
296 return @result;
297 }
299 #=== FUNCTION ================================================================
300 # NAME: get_mac
301 # PARAMETERS: interface name (i.e. eth0)
302 # RETURNS: (mac address)
303 # DESCRIPTION: Uses ioctl to get mac address directly from system.
304 #===============================================================================
305 sub get_mac {
306 my $ifreq= shift;
307 my $result;
308 if ($ifreq && length($ifreq) > 0) {
309 if($ifreq eq "all") {
310 if(defined($server_ip)) {
311 $result = &get_local_mac_for_remote_ip($server_ip);
312 }
313 elsif ($client_mac_address && length($client_mac_address) > 0 && !($client_mac_address eq "00:00:00:00:00:00")){
314 $result = &client_mac_address;
315 }
316 else {
317 $result = "00:00:00:00:00:00";
318 }
319 } else {
320 my $SIOCGIFHWADDR= 0x8927; # man 2 ioctl_list
322 # A configured MAC Address should always override a guessed value
323 if ($client_mac_address and length($client_mac_address) > 0 and not($client_mac_address eq "00:00:00:00:00:00")) {
324 $result= $client_mac_address;
325 }
326 else {
327 socket SOCKET, PF_INET, SOCK_DGRAM, getprotobyname('ip')
328 or die "socket: $!";
330 if(ioctl SOCKET, $SIOCGIFHWADDR, $ifreq) {
331 my ($if, $mac)= unpack 'h36 H12', $ifreq;
333 if (length($mac) > 0) {
334 $mac=~ m/^([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])$/;
335 $mac= sprintf("%s:%s:%s:%s:%s:%s", $1, $2, $3, $4, $5, $6);
336 $result = $mac;
337 }
338 }
339 }
340 }
341 }
342 return $result;
343 }
346 #=== FUNCTION ================================================================
347 # NAME: get_interface_for_ip
348 # PARAMETERS: ip address (i.e. 192.168.0.1)
349 # RETURNS: array: list of interfaces if ip=0.0.0.0, matching interface if found, undef else
350 # DESCRIPTION: Uses proc fs (/proc/net/dev) to get list of interfaces.
351 #===============================================================================
352 sub get_interface_for_ip {
353 my $result;
354 my $ip= shift;
355 if ($ip && length($ip) > 0) {
356 my @ifs= &get_interfaces();
357 if($ip eq "0.0.0.0") {
358 $result = "all";
359 } else {
360 foreach (@ifs) {
361 my $if=$_;
362 if(get_ip($if) eq $ip) {
363 $result = $if;
364 last;
365 }
366 }
367 }
368 }
369 return $result;
370 }
373 #=== FUNCTION ================================================================
374 # NAME: get_ip
375 # PARAMETERS: interface name (i.e. eth0)
376 # RETURNS: (ip address)
377 # DESCRIPTION: Uses ioctl to get ip address directly from system.
378 #===============================================================================
379 sub get_ip {
380 my $ifreq= shift;
381 my $result= "";
382 my $SIOCGIFADDR= 0x8915; # man 2 ioctl_list
383 my $proto= getprotobyname('ip');
385 socket SOCKET, PF_INET, SOCK_DGRAM, $proto
386 or die "socket: $!";
388 if(ioctl SOCKET, $SIOCGIFADDR, $ifreq) {
389 my ($if, $sin) = unpack 'a16 a16', $ifreq;
390 my ($port, $addr) = sockaddr_in $sin;
391 my $ip = inet_ntoa $addr;
393 if ($ip && length($ip) > 0) {
394 $result = $ip;
395 }
396 }
398 return $result;
399 }
402 #=== FUNCTION ================================================================
403 # NAME: get_local_mac_for_remote_ip
404 # PARAMETERS: none (takes server_ip from global variable)
405 # RETURNS: (ip address from interface that is used for communication)
406 # DESCRIPTION: Uses ioctl to get routing table from system, checks which entry
407 # matches (defaultroute last).
408 #===============================================================================
409 sub get_local_mac_for_remote_ip {
410 my $server_ip= shift;
411 my $result= "00:00:00:00:00:00";
413 if($server_ip =~ /^(\d\d?\d?\.){3}\d\d?\d?$/) {
414 my $PROC_NET_ROUTE= ('/proc/net/route');
416 open(PROC_NET_ROUTE, "<$PROC_NET_ROUTE")
417 or die "Could not open $PROC_NET_ROUTE";
419 my @ifs = <PROC_NET_ROUTE>;
421 close(PROC_NET_ROUTE);
423 # Eat header line
424 shift @ifs;
425 chomp @ifs;
426 foreach my $line(@ifs) {
427 my ($Iface,$Destination,$Gateway,$Flags,$RefCnt,$Use,$Metric,$Mask,$MTU,$Window,$IRTT)=split(/\s/, $line);
428 my $destination;
429 my $mask;
430 my ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Destination);
431 $destination= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
432 ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Mask);
433 $mask= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
434 if(new NetAddr::IP($server_ip)->within(new NetAddr::IP($destination, $mask))) {
435 # destination matches route, save mac and exit
436 $result= &get_mac($Iface);
437 last;
438 }
439 }
440 } else {
441 daemon_log("get_local_mac_for_remote_ip was called with a non-ip parameter: $server_ip", 1);
442 }
443 return $result;
444 }
446 sub get_local_ip_for_remote_ip {
447 my $server_ip= shift;
448 my $result="0.0.0.0";
450 if($server_ip =~ /^(\d\d?\d?\.){3}\d\d?\d?$/) {
451 if($server_ip eq "127.0.0.1") {
452 $result="127.0.0.1";
453 } else {
454 my $PROC_NET_ROUTE= ('/proc/net/route');
456 open(PROC_NET_ROUTE, "<$PROC_NET_ROUTE")
457 or die "Could not open $PROC_NET_ROUTE";
459 my @ifs = <PROC_NET_ROUTE>;
461 close(PROC_NET_ROUTE);
463 # Eat header line
464 shift @ifs;
465 chomp @ifs;
466 foreach my $line(@ifs) {
467 my ($Iface,$Destination,$Gateway,$Flags,$RefCnt,$Use,$Metric,$Mask,$MTU,$Window,$IRTT)=split(/\s/, $line);
468 my $destination;
469 my $mask;
470 my ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Destination);
471 $destination= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
472 ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Mask);
473 $mask= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
474 if(new NetAddr::IP($server_ip)->within(new NetAddr::IP($destination, $mask))) {
475 # destination matches route, save mac and exit
476 $result= &get_ip($Iface);
477 last;
478 }
479 }
480 }
481 } else {
482 daemon_log("get_local_ip_for_remote_ip was called with a non-ip parameter: $server_ip", 1);
483 }
484 return $result;
485 }
488 sub generate_hw_digest {
489 my $hw_data;
490 foreach my $line (split /\n/, `cat /proc/bus/pci/devices`) {
491 $hw_data.= sprintf "%s", $line =~ /[^\s]+\s([^\s]+)\s.*/;
492 }
493 return(md5_base64($hw_data));
494 }
497 sub create_passwd {
498 my $new_passwd = "";
499 for(my $i=0; $i<31; $i++) {
500 $new_passwd .= ("a".."z","A".."Z",0..9)[int(rand(62))]
501 }
503 return $new_passwd;
504 }
507 sub create_ciphering {
508 my ($passwd) = @_;
509 if((!defined($passwd)) || length($passwd)==0) {
510 $passwd = "";
511 }
512 $passwd = substr(md5_hex("$passwd") x 32, 0, 32);
513 my $iv = substr(md5_hex('GONICUS GmbH'),0, 16);
514 my $my_cipher = Crypt::Rijndael->new($passwd , Crypt::Rijndael::MODE_CBC());
515 $my_cipher->set_iv($iv);
516 return $my_cipher;
517 }
520 sub encrypt_msg {
521 my ($msg, $key) = @_;
522 my $my_cipher = &create_ciphering($key);
523 my $len;
524 {
525 use bytes;
526 $len= 16-length($msg)%16;
527 }
528 $msg = "\0"x($len).$msg;
529 $msg = $my_cipher->encrypt($msg);
530 chomp($msg = &encode_base64($msg));
531 # there are no newlines allowed inside msg
532 $msg=~ s/\n//g;
533 return $msg;
534 }
537 sub decrypt_msg {
539 my ($msg, $key) = @_ ;
540 $msg = &decode_base64($msg);
541 my $my_cipher = &create_ciphering($key);
542 $msg = $my_cipher->decrypt($msg);
543 $msg =~ s/\0*//g;
544 return $msg;
545 }
548 sub get_server_addresses {
549 my $domain= shift;
550 my @result;
552 my $error = 0;
553 my $res = Net::DNS::Resolver->new;
554 my $query = $res->send("_gosa-si._tcp.".$domain, "SRV");
555 my @hits;
557 if ($query) {
558 foreach my $rr ($query->answer) {
559 push(@hits, $rr->target.":".$rr->port);
560 }
561 }
562 else {
563 #warn "query failed: ", $res->errorstring, "\n";
564 $error++;
565 }
567 if( $error == 0 ) {
568 foreach my $hit (@hits) {
569 my ($hit_name, $hit_port) = split(/:/, $hit);
570 chomp($hit_name);
571 chomp($hit_port);
573 my $address_query = $res->send($hit_name);
574 if( 1 == length($address_query->answer) ) {
575 foreach my $rr ($address_query->answer) {
576 push(@result, $rr->address.":".$hit_port);
577 }
578 }
579 }
580 }
582 return @result;
583 }
586 #=== FUNCTION ================================================================
587 # NAME: send_msg_hash_to_target
588 # PARAMETERS: msg_hash - hash - xml_hash created with function create_xml_hash
589 # PeerAddr string - socket address to send msg
590 # PeerPort string - socket port, if not included in socket address
591 # RETURNS: nothing
592 # DESCRIPTION: ????
593 #===============================================================================
594 sub send_msg_hash_to_target {
595 my ($msg_hash, $address, $encrypt_key) = @_ ;
596 my $msg = &create_xml_string($msg_hash);
597 my $header = @{$msg_hash->{'header'}}[0];
598 my $error = &send_msg_to_target($msg, $address, $encrypt_key, $header);
600 return $error;
601 }
604 sub send_msg_to_target {
605 my ($msg, $address, $encrypt_key, $msg_header) = @_ ;
606 my $error = 0;
608 if( $msg_header ) { $msg_header = "'$msg_header'-"; }
609 else { $msg_header = ""; }
611 # encrypt xml msg
612 my $crypted_msg = &encrypt_msg($msg, $encrypt_key);
614 # opensocket
615 my $socket = &open_socket($address);
616 if( !$socket ) {
617 daemon_log("ERROR: cannot send ".$msg_header."msg to $address , host not reachable", 1);
618 $error++;
619 }
621 # send xml msg
622 if( $error == 0 ) {
623 print $socket $crypted_msg."\n";
624 daemon_log("INFO: send ".$msg_header."msg to $address", 5);
625 daemon_log("DEBUG: message:\n$msg", 8);
626 }
628 # close socket in any case
629 if( $socket ) {
630 close $socket;
631 }
633 return $error;
634 }
637 sub write_to_file {
638 my ($string, $file) = @_;
639 my $error = 0;
641 if( not defined $file || not -f $file ) {
642 &main::daemon_log("ERROR: $prg: check '-f file' failed: $file", 1);
643 $error++;
644 }
645 if( not defined $string || 0 == length($string)) {
646 &main::daemon_log("ERROR: $prg: empty string to write to file '$file'", 1);
647 $error++;
648 }
650 if( $error == 0 ) {
652 chomp($string);
654 if (open(FILE, ">> $file")){
655 print FILE $string."\n";
656 close(FILE);
657 }
658 }
660 return;
661 }
664 sub open_socket {
665 my ($PeerAddr, $PeerPort) = @_ ;
666 if(defined($PeerPort)){
667 $PeerAddr = $PeerAddr.":".$PeerPort;
668 }
669 my $socket;
670 $socket = new IO::Socket::INET(PeerAddr => $PeerAddr,
671 Porto => "tcp",
672 Type => SOCK_STREAM,
673 Timeout => 5,
674 );
675 if(not defined $socket) {
676 return;
677 }
678 &daemon_log("open_socket: $PeerAddr", 7);
679 return $socket;
680 }
683 #=== FUNCTION ================================================================
684 # NAME: register_at_server
685 # PARAMETERS:
686 # RETURNS:
687 # DESCRIPTION:
688 #===============================================================================
689 sub register_at_gosa_si_server {
690 my ($kernel) = $_[KERNEL];
691 my $try_to_register = 0;
693 if( not $REGISTERED ) {
694 # create new passwd and ciphering object for client-server communication
695 $server_key = &create_passwd();
697 my $events = join( ",", keys %{$event_hash} );
698 while(1) {
700 if( $try_to_register >= @servers ) {
701 last;
702 }
704 # fetch first gosa-si-server from @servers
705 my $server = shift(@servers);
707 # append shifted gosa-si-server at the end of @servers, so looking for servers never stop if
708 # a registration never occured
709 push( @servers, $server );
711 # Check if our ip is resolvable - if not: don't try to register
712 my $ip= &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
713 my $dnsname= gethostbyaddr(inet_aton($ip), AF_INET);
714 if(!defined($dnsname)) {
715 &write_to_file("goto-error-dns:$ip", $fai_logpath);
716 exit(1);
717 }
719 # create registration msg
720 my $local_ip = &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
721 my $local_mac = &get_local_mac_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
722 my $register_hash = &create_xml_hash("here_i_am", $local_ip.":".$client_port, $server);
723 &add_content2xml_hash($register_hash, "new_passwd", $server_key);
724 &add_content2xml_hash($register_hash, "mac_address", $local_mac);
725 &add_content2xml_hash($register_hash, "events", $events);
726 &add_content2xml_hash($register_hash, "gotoHardwareChecksum", $gotoHardwareChecksum);
728 # Add $HOSTNAME from ENV if force-hostname is set
729 if( defined($client_force_hostname) &&
730 $client_force_hostname eq "true") {
731 if(defined($ENV{HOSTNAME}) &&
732 length($ENV{HOSTNAME}) >0 ) {
733 &add_content2xml_hash($register_hash, "force-hostname", $ENV{HOSTNAME});
734 } else {
735 &main::daemon_log("force-hostname was set to true, but no \$HOSTNAME was found in Environment!",0);
736 }
737 }
739 # send xml hash to server with general server passwd
740 my $res = &send_msg_hash_to_target($register_hash, $server, $default_server_key);
741 if($res == 0) {
742 # reset try_to_register
743 $try_to_register = 0;
745 # Set fixed client address and mac address
746 $client_ip= &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
747 $client_address= "$client_ip:$client_port";
748 $client_mac_address = $local_mac;
749 $client_dnsname = $dnsname;
751 last;
752 } else {
753 $try_to_register++;
755 # wait 1 sec until trying to register again
756 sleep(1);
757 next;
758 }
759 }
761 if( $try_to_register >= @servers ) {
762 &write_to_file("gosa-si-no-server-available", $fai_logpath);
763 $kernel->delay_set('register_at_gosa_si_server', $delay_set_time);
764 }
765 else {
766 daemon_log("INFO: waiting for msg 'register_at_gosa_si_server'",5);
767 $kernel->delay_set('register_at_gosa_si_server', $delay_set_time);
768 # clear old settings and set it again
769 $kernel->delay_set('trigger_new_key', $server_key_lifetime);
770 }
771 }
772 return;
773 }
776 sub check_key_and_xml_validity {
777 my ($crypted_msg, $module_key) = @_;
779 my $msg;
780 my $msg_hash;
781 eval{
782 $msg = &decrypt_msg($crypted_msg, $module_key);
783 &main::daemon_log("decrypted_msg: \n$msg", 8);
785 $msg_hash = $xml->XMLin($msg, ForceArray=>1);
787 ##############
788 # check header
789 my $header_l = $msg_hash->{'header'};
790 if( 1 != @{$header_l} ) {
791 die 'no or more headers specified';
792 }
793 my $header = @{$header_l}[0];
794 if( 0 == length $header) {
795 die 'header has length 0';
796 }
798 ##############
799 # check source
800 my $source_l = $msg_hash->{'source'};
801 if( 1 != @{$source_l} ) {
802 die 'no or more than 1 sources specified';
803 }
804 my $source = @{$source_l}[0];
805 if( 0 == length $source) {
806 die 'source has length 0';
807 }
808 unless( $source =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ) {
809 die "source '$source' is neither a complete ip-address with port nor 'GOSA'";
810 }
812 ##############
813 # check target
814 my $target_l = $msg_hash->{'target'};
815 if( 1 != @{$target_l} ) {
816 die 'no or more than 1 targets specified ';
817 }
818 my $target = @{$target_l}[0];
819 if( 0 == length $target) {
820 die 'target has length 0 ';
821 }
822 unless( $target =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ){
823 die "source is neither a complete ip-address with port nor 'GOSA'";
824 }
825 };
826 if($@) {
827 &main::daemon_log("WARNING: do not understand the message or msg is not gosa-si envelope conform:", 5);
828 &main::daemon_log("$@", 8);
829 $msg = undef;
830 $msg_hash = undef;
831 }
833 return ($msg, $msg_hash);
834 }
837 sub check_outgoing_xml_validity {
838 my ($msg) = @_;
840 my $msg_hash;
841 eval{
842 $msg_hash = $xml->XMLin($msg, ForceArray=>1);
844 ##############
845 # check header
846 my $header_l = $msg_hash->{'header'};
847 if( 1 != @{$header_l} ) {
848 die 'no or more than one headers specified';
849 }
850 my $header = @{$header_l}[0];
851 if( 0 == length $header) {
852 die 'header has length 0';
853 }
855 ##############
856 # check source
857 my $source_l = $msg_hash->{'source'};
858 if( 1 != @{$source_l} ) {
859 die 'no or more than 1 sources specified';
860 }
861 my $source = @{$source_l}[0];
862 if( 0 == length $source) {
863 die 'source has length 0';
864 }
865 unless( $source =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ||
866 $source =~ /^GOSA$/i ) {
867 die "source '$source' is neither a complete ip-address with port";
868 }
870 ##############
871 # check target
872 my $target_l = $msg_hash->{'target'};
873 if( 1 != @{$target_l} ) {
874 die "no or more than one targets specified";
875 }
876 foreach my $target (@$target_l) {
877 if( 0 == length $target) {
878 die "target has length 0";
879 }
880 unless( $target =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ) {
881 die "target '$target' is not a complete ip-address with port or a valid target name";
882 }
883 }
884 };
885 if($@) {
886 daemon_log("WARNING: outgoing msg is not gosa-si envelope conform", 5);
887 daemon_log("$@ $msg", 8);
888 $msg_hash = undef;
889 }
890 return ($msg_hash);
891 }
894 sub import_events {
896 if (not -e $event_dir) {
897 daemon_log("ERROR: cannot find directory or directory is not readable: $event_dir", 1);
898 }
899 opendir (DIR, $event_dir) or die "ERROR while loading gosa-si-events from directory $event_dir : $!\n";
901 while (defined (my $event = readdir (DIR))) {
902 if( $event eq "." || $event eq ".." ) { next; }
904 eval{ require $event; };
905 if( $@ ) {
906 daemon_log("ERROR: import of event module '$event' failed", 1);
907 daemon_log("$@", 1);
908 next;
909 }
911 $event =~ /(\S*?).pm$/;
912 my $event_module = $1;
913 my $events_l = eval( $1."::get_events()") ;
914 foreach my $event_name (@{$events_l}) {
915 $event_hash->{$event_name} = $event_module;
916 }
918 }
920 my @all_events = keys %$event_hash;
921 my $all_events_string = join(", ", @all_events);
923 daemon_log("INFO: imported events: $all_events_string", 5);
924 }
926 sub trigger_new_key {
927 my ($kernel) = $_[KERNEL] ;
929 my $msg = "<xml><header>new_key</header><source>$client_address</source><target>$client_address</target></xml>";
930 &send_msg_to_target($msg, $client_address, $server_key, 'new_key');
932 $kernel->delay_set('trigger_new_key', $server_key_lifetime);
933 $kernel->delay_set('trigger_reregistering_process', 10);
934 }
937 sub trigger_logged_in_users_report {
938 my ($kernel) = $_[KERNEL] ;
940 # just do if client is registered already
941 if( $REGISTERED ) {
942 my $result = qx(/usr/bin/w -hs);
943 my @res_lines;
945 if( defined $result ) {
946 chomp($result);
947 @res_lines = split("\n", $result);
948 }
950 my @logged_in_user_list;
951 foreach my $line (@res_lines) {
952 chomp($line);
953 my @line_parts = split(/\s+/, $line);
954 push(@logged_in_user_list, $line_parts[0]);
955 }
956 system("echo 'CURRENTLY_LOGGED_IN ".join(" ", @logged_in_user_list)."' > /var/run/gosa-si-client.socket");
957 $kernel->delay_set('trigger_logged_in_users_report', $trigger_logged_in_users_report_delay);
958 } else {
959 # try it in 1 sec again
960 $kernel->delay_set('trigger_logged_in_users_report', 1);
961 }
962 }
964 sub trigger_reregistering_process {
965 $REGISTERED = 0;
966 }
969 sub generic_file_reset {
970 my ( $heap, $wheel_id ) = @_[ HEAP, ARG0 ];
972 my $service = $heap->{services}->{$wheel_id};
973 daemon_log("INFO: '$service' watching reset", 5);
974 return;
975 }
977 sub generic_file_error {
978 my ( $heap, $operation, $errno, $error_string, $wheel_id ) =
979 @_[ HEAP, ARG0, ARG1, ARG2, ARG3 ];
981 my $service = $heap->{services}->{$wheel_id};
982 daemon_log("ERROR: '$service' watcher $operation error $errno: $error_string", 1);
983 daemon_log("ERROR: shutting down '$service' file watcher", 1);
985 delete $heap->{services}->{$wheel_id};
986 delete $heap->{watchers}->{$wheel_id};
987 return;
988 }
991 sub fifo_got_record {
992 my $file_record = $_[ARG0];
993 my $header;
994 my $content = "";
995 daemon_log("DEBUG: fifo got record: $file_record", 7);
997 $file_record =~ /^(\S+)[ ]?([\s\S]+)?$/;
998 if( defined $1 ) {
999 $header = $1;
1000 } else {
1001 return;
1002 }
1004 if( defined $2 ) {
1005 $content = $2;
1006 }
1008 my $clmsg_hash = &create_xml_hash("CLMSG_$header", $client_address, $server_address, $content);
1009 &add_content2xml_hash($clmsg_hash, "macaddress", $client_mac_address);
1010 my $clmsg = &create_xml_string($clmsg_hash);
1011 &send_msg_to_target($clmsg, $server_address, $server_key, "CLMSG_$header");
1013 # if installation finished, save all log files
1014 if ($file_record eq "TASKBEGIN finish") {
1015 &save_fai_log($fai_log_dir);
1016 }
1018 return;
1019 }
1022 sub save_fai_log {
1023 my ($fai_log_dir) = @_ ;
1024 my $FAI_DIR;
1026 opendir($FAI_DIR, $fai_log_dir);
1027 if (not defined $FAI_DIR) {
1028 daemon_log("ERROR: can not open directory $fai_log_dir: $!", 1);
1029 return;
1030 }
1032 my @log_files = readdir($FAI_DIR);
1033 closedir($FAI_DIR);
1034 my @log_list;
1036 foreach my $log_file (@log_files) {
1037 if( $log_file eq "." || $log_file eq ".." ) { next; }
1038 my $log = "log_file:$log_file\n";
1039 $log_file = File::Spec->catfile( $fai_log_dir, $log_file );
1040 open(my $FILE, "<$log_file");
1041 if (not defined $FILE ) {
1042 daemon_log("ERROR: can not open '$log_file': $!", 1);
1043 next;
1044 }
1045 my @lines = <$FILE>;
1046 my $log_string = join("", @lines);
1047 $log .= &encode_base64($log_string);
1048 push(@log_list, $log);
1049 close ($FILE);
1050 }
1052 my $all_log_string = join("\n", @log_list);
1053 my $msg_hash = &create_xml_hash("CLMSG_save_fai_log", $client_address, $server_address, $all_log_string);
1054 &add_content2xml_hash($msg_hash, "macaddress", $client_mac_address);
1055 my $msg = &create_xml_string($msg_hash);
1056 &send_msg_to_target($msg, $server_address, $server_key, "CLMSG_save_fai_log");
1058 }
1061 sub _start {
1062 my ($kernel, $heap) = @_[KERNEL, HEAP];
1063 $kernel->alias_set('client_session');
1065 # force a registration at a gosa-si-server
1066 $kernel->yield('register_at_gosa_si_server');
1068 # install all file watcher defined
1069 while( my($file_name, $file) = each %files_to_watch ) {
1070 my $file_watcher = POE::Wheel::FollowTail->new(
1071 Filename => $file,
1072 InputEvent => $file_name."_record",
1073 ResetEvent => "file_reset",
1074 ErrorEvent => "file_error",
1075 );
1076 $heap->{services}->{ $file_watcher->ID } = $file_name;
1077 $heap->{watchers}->{ $file_watcher->ID } = $file_watcher;
1078 }
1079 $kernel->yield('trigger_logged_in_users_report');
1080 }
1083 sub _default {
1084 daemon_log("ERROR: can not handle incoming msg with header '$_[ARG0]'", 1);
1085 return;
1086 }
1089 sub server_input {
1090 my ($kernel, $heap, $input, $wheel) = @_[KERNEL, HEAP, ARG0, ARG1];
1091 my $error = 0;
1092 my $answer;
1094 daemon_log("DEBUG: Incoming msg:\n$input\n", 8);
1096 my ($msg, $msg_hash) = &check_key_and_xml_validity($input, $server_key);
1097 if( (!$msg) || (!$msg_hash) ) {
1098 daemon_log("WARNING: Deciphering of incoming msg failed", 3);
1099 $error++;
1100 }
1103 ######################
1104 # process incoming msg
1105 if( $error == 0 ) {
1106 my $header = @{$msg_hash->{header}}[0];
1107 my $source = @{$msg_hash->{source}}[0];
1109 if( exists $event_hash->{$header} ) {
1111 # preprocessing
1112 if($header eq "confirm_new_key") {
1113 $kernel->delay_set()
1114 }
1116 # a event exists with the header as name
1117 daemon_log("DEBUG: found event '$header' at event-module '".$event_hash->{$header}."'", 7);
1118 no strict 'refs';
1119 $answer = &{$event_hash->{$header}."::$header"}($msg, $msg_hash);
1120 }
1121 else {
1122 daemon_log("WARNING: no event '$header' found in event modules under $event_dir", 1);
1123 }
1124 }
1126 ########
1127 # answer
1128 if( $answer ) {
1130 #check gosa-si envelope validity
1131 my $answer_hash = &check_outgoing_xml_validity($answer);
1133 if( $answer_hash ) {
1134 # answer is valid
1136 # preprocessing
1137 if( $answer =~ "<header>registered</header>") {
1138 # set registered flag to true to stop sending further registered msgs
1139 $REGISTERED = 1;
1140 }
1141 else {
1142 $answer =~ /<header>(\S+)<\/header>/;
1143 &send_msg_to_target($answer, $server_address, $server_key, $1);
1144 }
1146 # postprocessing
1147 if( $answer =~ "<header>new_key</header>") {
1148 # set new key to global variable
1149 $answer =~ /<new_key>(\S*?)<\/new_key>/;
1150 my $new_key = $1;
1151 $server_key = $new_key;
1152 }
1153 }
1155 }
1157 return;
1158 }
1161 #==== MAIN = main ==============================================================
1162 # parse commandline options
1163 Getopt::Long::Configure( "bundling" );
1164 GetOptions("h|help" => \&usage,
1165 "c|config=s" => \$cfg_file,
1166 "f|foreground" => \$foreground,
1167 "v|verbose+" => \$verbose,
1168 );
1170 # read and set config parameters
1171 &check_cmdline_param ;
1172 &read_configfile($cfg_file, %cfg_defaults);
1173 &check_pid;
1176 # forward error messages to logfile
1177 if ( ! $foreground ) {
1178 open( STDIN, '+>/dev/null' );
1179 open( STDOUT, '+>&STDIN' );
1180 open( STDERR, '+>&STDIN' );
1181 }
1183 # Just fork, if we are not in foreground mode
1184 if( ! $foreground ) {
1185 chdir '/' or die "Can't chdir to /: $!";
1186 $pid = fork;
1187 setsid or die "Can't start a new session: $!";
1188 umask 0;
1189 }
1190 else {
1191 $pid = $$;
1192 }
1194 # Do something useful - put our PID into the pid_file
1195 if( 0 != $pid ) {
1196 open( LOCK_FILE, ">$pid_file" );
1197 print LOCK_FILE "$pid\n";
1198 close( LOCK_FILE );
1199 if( !$foreground ) {
1200 exit( 0 )
1201 };
1202 }
1204 daemon_log(" ", 1);
1205 daemon_log("$prg started!", 1);
1207 # delete old DBsqlite lock files
1208 system('rm -f /tmp/gosa_si_lock*gosa-si-client*');
1210 # detect ip and mac address and complete host address
1211 $client_address = $client_ip.":".$client_port;
1212 my $network_interface= &get_interface_for_ip($client_ip);
1213 $client_mac_address= &get_mac($network_interface);
1214 daemon_log("gosa-si-client ip address detected: $client_ip", 1);
1215 daemon_log("gosa-si-client mac address detected: $client_mac_address", 1);
1218 # import events
1219 &import_events();
1222 # compute hardware checksum
1223 $gotoHardwareChecksum= &generate_hw_digest();
1224 daemon_log("gosa-si-client gotoHardwareChecksum detected: $gotoHardwareChecksum", 1);
1227 # create socket for incoming xml messages
1228 POE::Component::Server::TCP->new(
1229 Alias => 'gosa-si-client',
1230 Port => $client_port,
1231 ClientInput => \&server_input,
1232 );
1233 daemon_log("start socket for incoming xml messages at port '$client_port' ", 1);
1236 # prepare variables
1237 if( inet_aton($server_ip) ){ $server_ip = inet_ntoa(inet_aton($server_ip)); }
1238 ############################################################
1239 # to change
1240 if( $server_ip eq "127.0.1.1" ) { $server_ip = "127.0.0.1" }
1241 ############################################################
1242 if (defined $server_ip && defined $server_port) {
1243 $server_address = $server_ip.":".$server_port;
1244 }
1245 $xml = new XML::Simple();
1246 $default_server_key = $server_key;
1249 # add gosa-si-server address from config file at first position of server list
1250 my $server_check_cfg = Config::IniFiles->new( -file => $cfg_file );
1251 my $server_check = $server_check_cfg->val( "server", "ip");
1252 if( defined $server_check ) {
1253 unshift(@servers, $server_address);
1254 my $servers_string = join(", ", @servers);
1255 daemon_log("INFO: found servers in configuration file: $servers_string", 5);
1256 } else {
1257 my @tmp_servers;
1258 if ( !$server_domain) {
1259 # Try our DNS Searchlist
1260 for my $domain(get_dns_domains()) {
1261 chomp($domain);
1262 my @tmp_domains= &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(@tmp_servers && length(@tmp_servers)==0) {
1270 daemon_log("ERROR: please specify a gosa-si-server address or a domain in config file", 1);
1271 kill 2, $$;
1272 }
1273 } else {
1274 @tmp_servers = &get_server_addresses($server_domain);
1275 if( 0 == @tmp_servers ) {
1276 daemon_log("ERROR: no gosa-si-server found in DNS for domain '$server_domain'",1);
1277 daemon_log("ERROR: please specify a gosa-si-server address or a domain in config file", 1);
1278 kill 2, $$;
1279 }
1280 }
1282 foreach my $server (@tmp_servers) {
1283 unshift(@servers, $server);
1284 }
1285 my $servers_string = join(", ", @servers);
1286 daemon_log("INFO: found servers in DNS: $servers_string", 5);
1287 }
1290 # open fifo for non-gosa-si-client-msgs to gosa-si-server
1291 POSIX::mkfifo("$gosa_si_client_fifo", "0600");
1294 POE::Session->create(
1295 inline_states => {
1296 _start => \&_start,
1297 _default => \&_default,
1298 register_at_gosa_si_server => \®ister_at_gosa_si_server,
1300 # trigger periodical tasks
1301 trigger_new_key => \&trigger_new_key,
1302 trigger_logged_in_users_report => \&trigger_logged_in_users_report,
1304 # handle records from each defined file differently
1305 fifo_record => \&fifo_got_record,
1307 # handle file resets and errors the same way for each file
1308 file_reset => \&generic_file_reset,
1309 file_error => \&generic_file_error,
1310 }
1311 );
1313 POE::Kernel->run();
1314 exit;