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 Getopt::Long;
24 use Config::IniFiles;
25 use POSIX;
26 use Time::HiRes qw( gettimeofday );
28 use POE qw(Component::Server::TCP Wheel::FollowTail);
29 use IO::Socket::INET;
30 use NetAddr::IP;
31 use Data::Dumper;
32 use Crypt::Rijndael;
33 use GOSA::GosaSupportDaemon;
34 use Digest::MD5 qw(md5_hex md5 md5_base64);
35 use MIME::Base64;
36 use XML::Simple;
37 use Net::DNS;
38 use File::Basename;
39 use File::Spec;
41 # Workaround: need pure perl to make it work with UTF-8 :-(
42 $XML::Simple::PREFERRED_PARSER= "XML::SAX::PurePerl";
44 my $event_dir = "/usr/lib/gosa-si/client/events";
45 use lib "/usr/lib/gosa-si/client/events";
47 my (%cfg_defaults, $foreground, $verbose, $pid_file, $procid, $pid, $log_file, $fai_logpath);
48 my ($server_ip, $server_port, $server_key, $server_timeout, $server_domain, $server_key_lifetime);
49 my ($client_ip, $client_port, $client_mac_address, $ldap_enabled, $ldap_config, $pam_config, $nss_config);
50 my $xml;
51 my $default_server_key;
52 my $event_hash;
53 my @servers;
54 my $gotoHardwareChecksum;
55 my $gosa_si_client_fifo;
56 my %files_to_watch;
57 $verbose= 1;
59 # globalise variables which are used in imported events
60 our $cfg_file;
61 our $opts_file;
62 our $server_address;
63 our $client_address;
64 our $client_ip;
65 our $client_mac_address;
66 our $client_dnsname;
67 our $client_force_hostname;
68 our $server_key;
70 # default variables
71 our $REGISTERED = 0;
73 # path to fifo for non-gosa-si-client messages to gosa-si-server
74 $gosa_si_client_fifo = "/var/run/gosa-si-client.socket";
75 %files_to_watch = (fifo => $gosa_si_client_fifo);
77 # in function register_at_gosa_si_server, after which period of seconds a new registration should be tried if a registration was
78 # not successful until now
79 my $delay_set_time = 5;
80 our $prg= basename($0);
82 # all x seconds the client reports logged_in users to gosa-si-server
83 my $trigger_logged_in_users_report_delay = 600;
85 # directory where all log files from installation are stored
86 my $fai_log_dir = "/tmp/fai";
88 %cfg_defaults = (
89 "general" =>
90 {"log-file" => [\$log_file, "/var/run/".$prg.".log"],
91 "pid-file" => [\$pid_file, "/var/run/".$prg.".pid"],
92 "opts-file" => [\$opts_file, "/var/run/".$prg.".opts"],
93 },
94 "client" =>
95 {"port" => [\$client_port, "20083"],
96 "ip" => [\$client_ip, "0.0.0.0"],
97 "mac-address" => [\$client_mac_address, "00:00:00:00:00:00"],
98 "server-domain" => [\$server_domain, ""],
99 "ldap" => [\$ldap_enabled, 1],
100 "ldap-config" => [\$ldap_config, "/etc/ldap/ldap.conf"],
101 "pam-config" => [\$pam_config, "/etc/pam_ldap.conf"],
102 "nss-config" => [\$nss_config, "/etc/libnss-ldap.conf"],
103 "fai-logpath" => [\$fai_logpath, "/var/log/fai/fai.log"],
104 "force-hostname" => [\$client_force_hostname, "false"],
105 },
106 "server" => {
107 "ip" => [\$server_ip, "127.0.0.1"],
108 "port" => [\$server_port, "20081"],
109 "key" => [\$server_key, ""],
110 "timeout" => [\$server_timeout, 10],
111 "key-lifetime" => [\$server_key_lifetime, 600],
112 },
114 );
117 #=== FUNCTIONS = functions =====================================================
119 #=== FUNCTION ================================================================
120 # NAME: check_cmdline_param
121 # PARAMETERS:
122 # RETURNS:
123 # DESCRIPTION:
124 #===============================================================================
125 sub check_cmdline_param () {
126 my $err_config;
127 my $err_counter = 0;
128 if(not defined($cfg_file)) {
129 $cfg_file = "/etc/gosa-si/client.conf";
130 if(! -r $cfg_file) {
131 $err_config = "please specify a config file";
132 $err_counter += 1;
133 }
134 }
135 if( $err_counter > 0 ) {
136 &usage( "", 1 );
137 if( defined( $err_config)) { print STDERR "$err_config\n"}
138 print STDERR "\n";
139 exit( -1 );
140 }
141 }
144 #=== FUNCTION ================================================================
145 # NAME: read_configfile
146 # PARAMETERS: cfg_file - string -
147 # RETURNS:
148 # DESCRIPTION:
149 #===============================================================================
150 sub read_configfile {
151 my ($cfg_file, %cfg_defaults) = @_ ;
152 my $cfg;
153 if( defined( $cfg_file) && ( length($cfg_file) > 0 )) {
154 if( -r $cfg_file ) {
155 $cfg = Config::IniFiles->new( -file => $cfg_file );
156 } else {
157 print STDERR "Couldn't read config file!";
158 }
159 } else {
160 $cfg = Config::IniFiles->new() ;
161 }
162 foreach my $section (keys %cfg_defaults) {
163 foreach my $param (keys %{$cfg_defaults{ $section }}) {
164 my $pinfo = $cfg_defaults{ $section }{ $param };
165 ${@$pinfo[ 0 ]} = $cfg->val( $section, $param, @$pinfo[ 1 ] );
166 }
167 }
168 }
171 #=== FUNCTION ================================================================
172 # NAME: check_pid
173 # PARAMETERS:
174 # RETURNS:
175 # DESCRIPTION:
176 #===============================================================================
177 sub check_pid {
178 $pid = -1;
179 # Check, if we are already running
180 if( open(LOCK_FILE, "<$pid_file") ) {
181 $pid = <LOCK_FILE>;
182 if( defined $pid ) {
183 chomp( $pid );
184 if( -f "/proc/$pid/stat" ) {
185 my($stat) = `cat /proc/$pid/stat` =~ m/$pid \((.+)\).*/;
186 if( $0 eq $stat ) {
187 close( LOCK_FILE );
188 exit -1;
189 }
190 }
191 }
192 close( LOCK_FILE );
193 unlink( $pid_file );
194 }
196 # create a syslog msg if it is not to possible to open PID file
197 if (not sysopen(LOCK_FILE, $pid_file, O_WRONLY|O_CREAT|O_EXCL, 0644)) {
198 my($msg) = "Couldn't obtain lockfile '$pid_file' ";
199 if (open(LOCK_FILE, '<', $pid_file)
200 && ($pid = <LOCK_FILE>))
201 {
202 chomp($pid);
203 $msg .= "(PID $pid)\n";
204 } else {
205 $msg .= "(unable to read PID)\n";
206 }
207 if( ! ($foreground) ) {
208 openlog( $0, "cons,pid", "daemon" );
209 syslog( "warning", $msg );
210 closelog();
211 }
212 else {
213 print( STDERR " $msg " );
214 }
215 exit( -1 );
216 }
217 }
220 sub sig_int_handler {
221 my ($signal) = @_;
223 daemon_log("shutting down gosa-si-server", 1);
224 exit(1);
225 }
226 $SIG{INT} = \&sig_int_handler;
229 #=== FUNCTION ================================================================
230 # NAME: logging
231 # PARAMETERS: level - string - default 'info'
232 # msg - string -
233 # facility - string - default 'LOG_DAEMON'
234 # RETURNS:
235 # DESCRIPTION:
236 #===============================================================================
237 sub daemon_log {
238 # log into log_file
239 my( $msg, $level ) = @_;
240 if(not defined $msg) { return }
241 if(not defined $level) { $level = 1 }
242 if(defined $log_file){
243 open(LOG_HANDLE, ">>$log_file");
244 if(not defined open( LOG_HANDLE, ">>$log_file" )) {
245 print STDERR "cannot open $log_file: $!";
246 return }
247 chomp($msg);
248 if($level <= $verbose){
249 my ($seconds, $minutes, $hours, $monthday, $month,
250 $year, $weekday, $yearday, $sommertime) = localtime(time);
251 $hours = $hours < 10 ? $hours = "0".$hours : $hours;
252 $minutes = $minutes < 10 ? $minutes = "0".$minutes : $minutes;
253 $seconds = $seconds < 10 ? $seconds = "0".$seconds : $seconds;
254 my @monthnames = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
255 $month = $monthnames[$month];
256 $monthday = $monthday < 10 ? $monthday = "0".$monthday : $monthday;
257 $year+=1900;
259 my $log_msg = "$month $monthday $hours:$minutes:$seconds $prg $msg\n";
260 print LOG_HANDLE $log_msg;
261 if( $foreground ) {
262 print STDERR $log_msg;
263 }
264 }
265 close( LOG_HANDLE );
266 }
267 }
270 #=== FUNCTION ================================================================
271 # NAME: get_interfaces
272 # PARAMETERS: none
273 # RETURNS: (list of interfaces)
274 # DESCRIPTION: Uses proc fs (/proc/net/dev) to get list of interfaces.
275 #===============================================================================
276 sub get_interfaces {
277 my @result;
278 my $PROC_NET_DEV= ('/proc/net/dev');
280 open(PROC_NET_DEV, "<$PROC_NET_DEV")
281 or die "Could not open $PROC_NET_DEV";
283 my @ifs = <PROC_NET_DEV>;
285 close(PROC_NET_DEV);
287 # Eat first two line
288 shift @ifs;
289 shift @ifs;
291 chomp @ifs;
292 foreach my $line(@ifs) {
293 my $if= (split /:/, $line)[0];
294 $if =~ s/^\s+//;
295 push @result, $if;
296 }
298 return @result;
299 }
301 #=== FUNCTION ================================================================
302 # NAME: get_mac
303 # PARAMETERS: interface name (i.e. eth0)
304 # RETURNS: (mac address)
305 # DESCRIPTION: Uses ioctl to get mac address directly from system.
306 #===============================================================================
307 sub get_mac {
308 my $ifreq= shift;
309 my $result;
310 if ($ifreq && length($ifreq) > 0) {
311 if($ifreq eq "all") {
312 if(defined($server_ip)) {
313 $result = &get_local_mac_for_remote_ip($server_ip);
314 }
315 elsif ($client_mac_address && length($client_mac_address) > 0 && !($client_mac_address eq "00:00:00:00:00:00")){
316 $result = &client_mac_address;
317 }
318 else {
319 $result = "00:00:00:00:00:00";
320 }
321 } else {
322 my $SIOCGIFHWADDR= 0x8927; # man 2 ioctl_list
324 # A configured MAC Address should always override a guessed value
325 if ($client_mac_address and length($client_mac_address) > 0 and not($client_mac_address eq "00:00:00:00:00:00")) {
326 $result= $client_mac_address;
327 }
328 else {
329 socket SOCKET, PF_INET, SOCK_DGRAM, getprotobyname('ip')
330 or die "socket: $!";
332 if(ioctl SOCKET, $SIOCGIFHWADDR, $ifreq) {
333 my ($if, $mac)= unpack 'h36 H12', $ifreq;
335 if (length($mac) > 0) {
336 $mac=~ m/^([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])$/;
337 $mac= sprintf("%s:%s:%s:%s:%s:%s", $1, $2, $3, $4, $5, $6);
338 $result = $mac;
339 }
340 }
341 }
342 }
343 }
344 return $result;
345 }
348 #=== FUNCTION ================================================================
349 # NAME: get_interface_for_ip
350 # PARAMETERS: ip address (i.e. 192.168.0.1)
351 # RETURNS: array: list of interfaces if ip=0.0.0.0, matching interface if found, undef else
352 # DESCRIPTION: Uses proc fs (/proc/net/dev) to get list of interfaces.
353 #===============================================================================
354 sub get_interface_for_ip {
355 my $result;
356 my $ip= shift;
357 if ($ip && length($ip) > 0) {
358 my @ifs= &get_interfaces();
359 if($ip eq "0.0.0.0") {
360 $result = "all";
361 } else {
362 foreach (@ifs) {
363 my $if=$_;
364 if(get_ip($if) eq $ip) {
365 $result = $if;
366 last;
367 }
368 }
369 }
370 }
371 return $result;
372 }
375 #=== FUNCTION ================================================================
376 # NAME: get_ip
377 # PARAMETERS: interface name (i.e. eth0)
378 # RETURNS: (ip address)
379 # DESCRIPTION: Uses ioctl to get ip address directly from system.
380 #===============================================================================
381 sub get_ip {
382 my $ifreq= shift;
383 my $result= "";
384 my $SIOCGIFADDR= 0x8915; # man 2 ioctl_list
385 my $proto= getprotobyname('ip');
387 socket SOCKET, PF_INET, SOCK_DGRAM, $proto
388 or die "socket: $!";
390 if(ioctl SOCKET, $SIOCGIFADDR, $ifreq) {
391 my ($if, $sin) = unpack 'a16 a16', $ifreq;
392 my ($port, $addr) = sockaddr_in $sin;
393 my $ip = inet_ntoa $addr;
395 if ($ip && length($ip) > 0) {
396 $result = $ip;
397 }
398 }
400 return $result;
401 }
404 #=== FUNCTION ================================================================
405 # NAME: get_local_mac_for_remote_ip
406 # PARAMETERS: none (takes server_ip from global variable)
407 # RETURNS: (ip address from interface that is used for communication)
408 # DESCRIPTION: Uses ioctl to get routing table from system, checks which entry
409 # matches (defaultroute last).
410 #===============================================================================
411 sub get_local_mac_for_remote_ip {
412 my $server_ip= shift;
413 my $result= "00:00:00:00:00:00";
415 if($server_ip =~ /^(\d\d?\d?\.){3}\d\d?\d?$/) {
416 my $PROC_NET_ROUTE= ('/proc/net/route');
418 open(PROC_NET_ROUTE, "<$PROC_NET_ROUTE")
419 or die "Could not open $PROC_NET_ROUTE";
421 my @ifs = <PROC_NET_ROUTE>;
423 close(PROC_NET_ROUTE);
425 # Eat header line
426 shift @ifs;
427 chomp @ifs;
428 foreach my $line(@ifs) {
429 my ($Iface,$Destination,$Gateway,$Flags,$RefCnt,$Use,$Metric,$Mask,$MTU,$Window,$IRTT)=split(/\s/, $line);
430 my $destination;
431 my $mask;
432 my ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Destination);
433 $destination= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
434 ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Mask);
435 $mask= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
436 if(new NetAddr::IP($server_ip)->within(new NetAddr::IP($destination, $mask))) {
437 # destination matches route, save mac and exit
438 $result= &get_mac($Iface);
439 last;
440 }
441 }
442 } else {
443 daemon_log("get_local_mac_for_remote_ip was called with a non-ip parameter: $server_ip", 1);
444 }
445 return $result;
446 }
448 sub get_local_ip_for_remote_ip {
449 my $server_ip= shift;
450 my $result="0.0.0.0";
452 if($server_ip =~ /^(\d\d?\d?\.){3}\d\d?\d?$/) {
453 if($server_ip eq "127.0.0.1") {
454 $result="127.0.0.1";
455 } else {
456 my $PROC_NET_ROUTE= ('/proc/net/route');
458 open(PROC_NET_ROUTE, "<$PROC_NET_ROUTE")
459 or die "Could not open $PROC_NET_ROUTE";
461 my @ifs = <PROC_NET_ROUTE>;
463 close(PROC_NET_ROUTE);
465 # Eat header line
466 shift @ifs;
467 chomp @ifs;
468 foreach my $line(@ifs) {
469 my ($Iface,$Destination,$Gateway,$Flags,$RefCnt,$Use,$Metric,$Mask,$MTU,$Window,$IRTT)=split(/\s/, $line);
470 my $destination;
471 my $mask;
472 my ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Destination);
473 $destination= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
474 ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Mask);
475 $mask= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
476 if(new NetAddr::IP($server_ip)->within(new NetAddr::IP($destination, $mask))) {
477 # destination matches route, save mac and exit
478 $result= &get_ip($Iface);
479 last;
480 }
481 }
482 }
483 } else {
484 daemon_log("get_local_ip_for_remote_ip was called with a non-ip parameter: $server_ip", 1);
485 }
486 return $result;
487 }
490 sub generate_hw_digest {
491 my $hw_data;
492 foreach my $line (split /\n/, `cat /proc/bus/pci/devices`) {
493 $hw_data.= sprintf "%s", $line =~ /[^\s]+\s([^\s]+)\s.*/;
494 }
495 return(md5_base64($hw_data));
496 }
499 sub create_passwd {
500 my $new_passwd = "";
501 for(my $i=0; $i<31; $i++) {
502 $new_passwd .= ("a".."z","A".."Z",0..9)[int(rand(62))]
503 }
505 return $new_passwd;
506 }
509 sub create_ciphering {
510 my ($passwd) = @_;
511 if((!defined($passwd)) || length($passwd)==0) {
512 $passwd = "";
513 }
514 $passwd = substr(md5_hex("$passwd") x 32, 0, 32);
515 my $iv = substr(md5_hex('GONICUS GmbH'),0, 16);
516 my $my_cipher = Crypt::Rijndael->new($passwd , Crypt::Rijndael::MODE_CBC());
517 $my_cipher->set_iv($iv);
518 return $my_cipher;
519 }
522 sub encrypt_msg {
523 my ($msg, $key) = @_;
524 my $my_cipher = &create_ciphering($key);
525 my $len;
526 {
527 use bytes;
528 $len= 16-length($msg)%16;
529 }
530 $msg = "\0"x($len).$msg;
531 $msg = $my_cipher->encrypt($msg);
532 chomp($msg = &encode_base64($msg));
533 # there are no newlines allowed inside msg
534 $msg=~ s/\n//g;
535 return $msg;
536 }
539 sub decrypt_msg {
541 my ($msg, $key) = @_ ;
542 $msg = &decode_base64($msg);
543 my $my_cipher = &create_ciphering($key);
544 $msg = $my_cipher->decrypt($msg);
545 $msg =~ s/\0*//g;
546 return $msg;
547 }
550 sub get_server_addresses {
551 my $domain= shift;
552 my @result;
554 my $error = 0;
555 my $res = Net::DNS::Resolver->new;
556 my $query = $res->send("_gosa-si._tcp.".$domain, "SRV");
557 my @hits;
559 if ($query) {
560 foreach my $rr ($query->answer) {
561 push(@hits, $rr->target.":".$rr->port);
562 }
563 }
564 else {
565 #warn "query failed: ", $res->errorstring, "\n";
566 $error++;
567 }
569 if( $error == 0 ) {
570 foreach my $hit (@hits) {
571 my ($hit_name, $hit_port) = split(/:/, $hit);
572 chomp($hit_name);
573 chomp($hit_port);
575 my $address_query = $res->send($hit_name);
576 if( 1 == length($address_query->answer) ) {
577 foreach my $rr ($address_query->answer) {
578 push(@result, $rr->address.":".$hit_port);
579 }
580 }
581 }
582 }
584 return @result;
585 }
588 #=== FUNCTION ================================================================
589 # NAME: send_msg_hash_to_target
590 # PARAMETERS: msg_hash - hash - xml_hash created with function create_xml_hash
591 # PeerAddr string - socket address to send msg
592 # PeerPort string - socket port, if not included in socket address
593 # RETURNS: nothing
594 # DESCRIPTION: ????
595 #===============================================================================
596 sub send_msg_hash_to_target {
597 my ($msg_hash, $address, $encrypt_key) = @_ ;
598 my $msg = &create_xml_string($msg_hash);
599 my $header = @{$msg_hash->{'header'}}[0];
600 my $error = &send_msg_to_target($msg, $address, $encrypt_key, $header);
602 return $error;
603 }
606 sub send_msg_to_target {
607 my ($msg, $address, $encrypt_key, $msg_header) = @_ ;
608 my $error = 0;
610 if( $msg_header ) { $msg_header = "'$msg_header'-"; }
611 else { $msg_header = ""; }
613 # encrypt xml msg
614 my $crypted_msg = &encrypt_msg($msg, $encrypt_key);
616 # opensocket
617 my $socket = &open_socket($address);
618 if( !$socket ) {
619 daemon_log("ERROR: cannot send ".$msg_header."msg to $address , host not reachable", 1);
620 $error++;
621 }
623 # send xml msg
624 if( $error == 0 ) {
625 print $socket $crypted_msg."\n";
626 daemon_log("INFO: send ".$msg_header."msg to $address", 5);
627 daemon_log("DEBUG: message:\n$msg", 8);
628 }
630 # close socket in any case
631 if( $socket ) {
632 close $socket;
633 }
635 return $error;
636 }
639 sub write_to_file {
640 my ($string, $file) = @_;
641 my $error = 0;
643 if( not defined $file || not -f $file ) {
644 &main::daemon_log("ERROR: $prg: check '-f file' failed: $file", 1);
645 $error++;
646 }
647 if( not defined $string || 0 == length($string)) {
648 &main::daemon_log("ERROR: $prg: empty string to write to file '$file'", 1);
649 $error++;
650 }
652 if( $error == 0 ) {
654 chomp($string);
656 if (open(FILE, ">> $file")){
657 print FILE $string."\n";
658 close(FILE);
659 }
660 }
662 return;
663 }
666 sub open_socket {
667 my ($PeerAddr, $PeerPort) = @_ ;
668 if(defined($PeerPort)){
669 $PeerAddr = $PeerAddr.":".$PeerPort;
670 }
671 my $socket;
672 $socket = new IO::Socket::INET(PeerAddr => $PeerAddr,
673 Porto => "tcp",
674 Type => SOCK_STREAM,
675 Timeout => 5,
676 );
677 if(not defined $socket) {
678 return;
679 }
680 &daemon_log("open_socket: $PeerAddr", 7);
681 return $socket;
682 }
685 #=== FUNCTION ================================================================
686 # NAME: register_at_server
687 # PARAMETERS:
688 # RETURNS:
689 # DESCRIPTION:
690 #===============================================================================
691 sub register_at_gosa_si_server {
692 my ($kernel) = $_[KERNEL];
693 my $try_to_register = 0;
695 if( not $REGISTERED ) {
696 # clear all other triggered events and wait till registration was successful
697 $kernel->delay('trigger_new_key');
699 # create new passwd and ciphering object for client-server communication
700 $server_key = &create_passwd();
702 my $events = join( ",", keys %{$event_hash} );
703 while(1) {
705 if( $try_to_register >= @servers ) {
706 last;
707 }
709 # fetch first gosa-si-server from @servers
710 my $server = shift(@servers);
712 # append shifted gosa-si-server at the end of @servers, so looking for servers never stop if
713 # a registration never occured
714 push( @servers, $server );
716 # Check if our ip is resolvable - if not: don't try to register
717 my $ip= &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
718 my $dnsname= gethostbyaddr(inet_aton($ip), AF_INET);
719 if(!defined($dnsname)) {
720 &write_to_file("goto-error-dns:$ip", $fai_logpath);
721 exit(1);
722 }
724 # create registration msg
725 my $local_ip = &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
726 my $local_mac = &get_local_mac_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
727 my $register_hash = &create_xml_hash("here_i_am", $local_ip.":".$client_port, $server);
728 &add_content2xml_hash($register_hash, "new_passwd", $server_key);
729 &add_content2xml_hash($register_hash, "mac_address", $local_mac);
730 &add_content2xml_hash($register_hash, "events", $events);
731 &add_content2xml_hash($register_hash, "gotoHardwareChecksum", $gotoHardwareChecksum);
733 # Add $HOSTNAME from ENV if force-hostname is set
734 if( defined($client_force_hostname) &&
735 $client_force_hostname eq "true") {
736 if(defined($ENV{HOSTNAME}) &&
737 length($ENV{HOSTNAME}) >0 ) {
738 &add_content2xml_hash($register_hash, "force-hostname", $ENV{HOSTNAME});
739 } else {
740 &main::daemon_log("force-hostname was set to true, but no \$HOSTNAME was found in Environment!",0);
741 }
742 }
744 # send xml hash to server with general server passwd
745 my $res = &send_msg_hash_to_target($register_hash, $server, $default_server_key);
746 if($res == 0) {
747 # reset try_to_register
748 $try_to_register = 0;
750 # Set fixed client address and mac address
751 $client_ip= &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
752 $client_address= "$client_ip:$client_port";
753 $client_mac_address = $local_mac;
754 $client_dnsname = $dnsname;
756 last;
757 } else {
758 $try_to_register++;
760 # wait 1 sec until trying to register again
761 sleep(1);
762 next;
763 }
764 }
766 if( $try_to_register >= @servers ) {
767 &write_to_file("gosa-si-no-server-available", $fai_logpath);
768 $kernel->delay_set('register_at_gosa_si_server', $delay_set_time);
769 }
770 else {
771 daemon_log("INFO: waiting for msg 'register_at_gosa_si_server'",5);
772 $kernel->delay_set('register_at_gosa_si_server', $delay_set_time);
773 # clear old settings and set it again
774 $kernel->delay_set('trigger_new_key', $server_key_lifetime);
775 }
777 } else {
778 $kernel->delay('register_at_gosa_si_server');
779 }
780 return;
781 }
784 sub check_key_and_xml_validity {
785 my ($crypted_msg, $module_key) = @_;
787 my $msg;
788 my $msg_hash;
789 eval{
790 $msg = &decrypt_msg($crypted_msg, $module_key);
791 &main::daemon_log("decrypted_msg: \n$msg", 8);
793 $msg_hash = $xml->XMLin($msg, ForceArray=>1);
795 ##############
796 # check header
797 my $header_l = $msg_hash->{'header'};
798 if( 1 != @{$header_l} ) {
799 die 'no or more headers specified';
800 }
801 my $header = @{$header_l}[0];
802 if( 0 == length $header) {
803 die 'header has length 0';
804 }
806 ##############
807 # check source
808 my $source_l = $msg_hash->{'source'};
809 if( 1 != @{$source_l} ) {
810 die 'no or more than 1 sources specified';
811 }
812 my $source = @{$source_l}[0];
813 if( 0 == length $source) {
814 die 'source has length 0';
815 }
816 unless( $source =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ) {
817 die "source '$source' is neither a complete ip-address with port nor 'GOSA'";
818 }
820 ##############
821 # check target
822 my $target_l = $msg_hash->{'target'};
823 if( 1 != @{$target_l} ) {
824 die 'no or more than 1 targets specified ';
825 }
826 my $target = @{$target_l}[0];
827 if( 0 == length $target) {
828 die 'target has length 0 ';
829 }
830 unless( $target =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ){
831 die "source is neither a complete ip-address with port nor 'GOSA'";
832 }
833 };
834 if($@) {
835 &main::daemon_log("WARNING: do not understand the message or msg is not gosa-si envelope conform:", 5);
836 &main::daemon_log("$@", 8);
837 $msg = undef;
838 $msg_hash = undef;
839 }
841 return ($msg, $msg_hash);
842 }
845 sub check_outgoing_xml_validity {
846 my ($msg) = @_;
848 my $msg_hash;
849 eval{
850 $msg_hash = $xml->XMLin($msg, ForceArray=>1);
852 ##############
853 # check header
854 my $header_l = $msg_hash->{'header'};
855 if( 1 != @{$header_l} ) {
856 die 'no or more than one headers specified';
857 }
858 my $header = @{$header_l}[0];
859 if( 0 == length $header) {
860 die 'header has length 0';
861 }
863 ##############
864 # check source
865 my $source_l = $msg_hash->{'source'};
866 if( 1 != @{$source_l} ) {
867 die 'no or more than 1 sources specified';
868 }
869 my $source = @{$source_l}[0];
870 if( 0 == length $source) {
871 die 'source has length 0';
872 }
873 unless( $source =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ||
874 $source =~ /^GOSA$/i ) {
875 die "source '$source' is neither a complete ip-address with port";
876 }
878 ##############
879 # check target
880 my $target_l = $msg_hash->{'target'};
881 if( 1 != @{$target_l} ) {
882 die "no or more than one targets specified";
883 }
884 foreach my $target (@$target_l) {
885 if( 0 == length $target) {
886 die "target has length 0";
887 }
888 unless( $target =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ) {
889 die "target '$target' is not a complete ip-address with port or a valid target name";
890 }
891 }
892 };
893 if($@) {
894 daemon_log("WARNING: outgoing msg is not gosa-si envelope conform", 5);
895 daemon_log("$@ $msg", 8);
896 $msg_hash = undef;
897 }
898 return ($msg_hash);
899 }
902 sub import_events {
904 if (not -e $event_dir) {
905 daemon_log("ERROR: cannot find directory or directory is not readable: $event_dir", 1);
906 }
907 opendir (DIR, $event_dir) or die "ERROR while loading gosa-si-events from directory $event_dir : $!\n";
909 while (defined (my $event = readdir (DIR))) {
910 if( $event eq "." || $event eq ".." ) { next; }
912 eval{ require $event; };
913 if( $@ ) {
914 daemon_log("ERROR: import of event module '$event' failed", 1);
915 daemon_log("$@", 1);
916 next;
917 }
919 $event =~ /(\S*?).pm$/;
920 my $event_module = $1;
921 my $events_l = eval( $1."::get_events()") ;
922 foreach my $event_name (@{$events_l}) {
923 $event_hash->{$event_name} = $event_module;
924 }
926 }
928 my @all_events = keys %$event_hash;
929 my $all_events_string = join(", ", @all_events);
931 daemon_log("INFO: imported events: $all_events_string", 5);
932 }
934 sub trigger_new_key {
935 my ($kernel) = $_[KERNEL] ;
937 my $msg = "<xml><header>new_key</header><source>$client_address</source><target>$client_address</target></xml>";
938 &send_msg_to_target($msg, $client_address, $server_key, 'new_key');
940 $kernel->delay_set('trigger_new_key', $server_key_lifetime);
941 }
944 sub trigger_logged_in_users_report {
945 my ($kernel) = $_[KERNEL] ;
947 # just do if client is registered already
948 if( $REGISTERED ) {
949 my $result = qx(/usr/bin/w -hs);
950 my @res_lines;
952 if( defined $result ) {
953 chomp($result);
954 @res_lines = split("\n", $result);
955 }
957 my @logged_in_user_list;
958 foreach my $line (@res_lines) {
959 chomp($line);
960 my @line_parts = split(/\s+/, $line);
961 push(@logged_in_user_list, $line_parts[0]);
962 }
963 system("echo 'CURRENTLY_LOGGED_IN ".join(" ", @logged_in_user_list)."' > /var/run/gosa-si-client.socket");
964 $kernel->delay_set('trigger_logged_in_users_report', $trigger_logged_in_users_report_delay);
965 } else {
966 # try it in 1 sec again
967 $kernel->delay_set('trigger_logged_in_users_report', 1);
968 }
969 }
972 sub generic_file_reset {
973 my ( $heap, $wheel_id ) = @_[ HEAP, ARG0 ];
975 my $service = $heap->{services}->{$wheel_id};
976 daemon_log("INFO: '$service' watching reset", 5);
977 return;
978 }
980 sub generic_file_error {
981 my ( $heap, $operation, $errno, $error_string, $wheel_id ) =
982 @_[ HEAP, ARG0, ARG1, ARG2, ARG3 ];
984 my $service = $heap->{services}->{$wheel_id};
985 daemon_log("ERROR: '$service' watcher $operation error $errno: $error_string", 1);
986 daemon_log("ERROR: shutting down '$service' file watcher", 1);
988 delete $heap->{services}->{$wheel_id};
989 delete $heap->{watchers}->{$wheel_id};
990 return;
991 }
994 sub fifo_got_record {
995 my $file_record = $_[ARG0];
996 my $header;
997 my $content = "";
998 daemon_log("DEBUG: fifo got record: $file_record", 7);
1000 $file_record =~ /^(\S+)[ ]?([\s\S]+)?$/;
1001 if( defined $1 ) {
1002 $header = $1;
1003 } else {
1004 return;
1005 }
1007 if( defined $2 ) {
1008 $content = $2;
1009 }
1011 my $clmsg_hash = &create_xml_hash("CLMSG_$header", $client_address, $server_address, $content);
1012 &add_content2xml_hash($clmsg_hash, "macaddress", $client_mac_address);
1013 my $clmsg = &create_xml_string($clmsg_hash);
1014 &send_msg_to_target($clmsg, $server_address, $server_key, "CLMSG_$header");
1016 # if installation finished, save all log files
1017 if ($file_record eq "TASKBEGIN finish") {
1018 &save_fai_log($fai_log_dir);
1019 }
1021 return;
1022 }
1025 sub save_fai_log {
1026 my ($fai_log_dir) = @_ ;
1027 my $FAI_DIR;
1029 opendir($FAI_DIR, $fai_log_dir);
1030 if (not defined $FAI_DIR) {
1031 daemon_log("ERROR: can not open directory $fai_log_dir: $!", 1);
1032 return;
1033 }
1035 my @log_files = readdir($FAI_DIR);
1036 closedir($FAI_DIR);
1037 my @log_list;
1039 foreach my $log_file (@log_files) {
1040 if( $log_file eq "." || $log_file eq ".." ) { next; }
1041 my $log = "log_file:$log_file\n";
1042 $log_file = File::Spec->catfile( $fai_log_dir, $log_file );
1043 open(my $FILE, "<$log_file");
1044 if (not defined $FILE ) {
1045 daemon_log("ERROR: can not open '$log_file': $!", 1);
1046 next;
1047 }
1048 my @lines = <$FILE>;
1049 my $log_string = join("", @lines);
1050 $log .= &encode_base64($log_string);
1051 push(@log_list, $log);
1052 close ($FILE);
1053 }
1055 my $all_log_string = join("\n", @log_list);
1056 my $msg_hash = &create_xml_hash("CLMSG_save_fai_log", $client_address, $server_address, $all_log_string);
1057 &add_content2xml_hash($msg_hash, "macaddress", $client_mac_address);
1058 my $msg = &create_xml_string($msg_hash);
1059 &send_msg_to_target($msg, $server_address, $server_key, "CLMSG_save_fai_log");
1061 }
1064 sub _start {
1065 my ($kernel, $heap) = @_[KERNEL, HEAP];
1066 $kernel->alias_set('client_session');
1068 # force a registration at a gosa-si-server
1069 $kernel->yield('register_at_gosa_si_server');
1071 # install all file watcher defined
1072 while( my($file_name, $file) = each %files_to_watch ) {
1073 my $file_watcher = POE::Wheel::FollowTail->new(
1074 Filename => $file,
1075 InputEvent => $file_name."_record",
1076 ResetEvent => "file_reset",
1077 ErrorEvent => "file_error",
1078 );
1079 $heap->{services}->{ $file_watcher->ID } = $file_name;
1080 $heap->{watchers}->{ $file_watcher->ID } = $file_watcher;
1081 }
1082 $kernel->yield('trigger_logged_in_users_report');
1083 }
1086 sub _default {
1087 daemon_log("ERROR: can not handle incoming msg with header '$_[ARG0]'", 1);
1088 return;
1089 }
1092 sub server_input {
1093 my ($kernel, $heap, $input, $wheel) = @_[KERNEL, HEAP, ARG0, ARG1];
1094 my $remote_ip = $heap->{'remote_ip'},
1095 my $error = 0;
1096 my $answer;
1099 daemon_log("INFO: Incoming msg from '$remote_ip'", 5);
1100 daemon_log("DEBUG: Incoming msg:\n$input\n", 8);
1102 my ($msg, $msg_hash) = &check_key_and_xml_validity($input, $server_key);
1103 if( (!$msg) || (!$msg_hash) ) {
1104 daemon_log("WARNING: Deciphering of incoming msg failed", 3);
1105 if($server_address =~ /$remote_ip/) {
1106 # got a msg from gosa-si-server which can not be decrypted, may the secrete not up-to-date
1107 # cause a reregistering with a new secrete handshake
1108 daemon_log("WARNING: Message from gosa-si-server could not be understood, cause reregistering at server", 3);
1109 $REGISTERED = 0;
1110 $kernel->post('client_session', 'register_at_gosa_si_server');
1111 }
1112 $error++;
1113 }
1116 ######################
1117 # process incoming msg
1118 if( $error == 0 ) {
1119 my $header = @{$msg_hash->{header}}[0];
1120 my $source = @{$msg_hash->{source}}[0];
1122 if( exists $event_hash->{$header} ) {
1124 # a event exists with the header as name
1125 daemon_log("DEBUG: found event '$header' at event-module '".$event_hash->{$header}."'", 7);
1126 no strict 'refs';
1127 $answer = &{$event_hash->{$header}."::$header"}($msg, $msg_hash);
1128 }
1129 else {
1130 daemon_log("WARNING: no event '$header' found in event modules under $event_dir", 1);
1131 }
1132 }
1134 ########
1135 # answer
1136 if( $answer ) {
1138 #check gosa-si envelope validity
1139 my $answer_hash = &check_outgoing_xml_validity($answer);
1141 if( $answer_hash ) {
1142 # answer is valid
1144 # preprocessing
1145 if( $answer =~ "<header>registered</header>") {
1146 # set registered flag to true to stop sending further registered msgs
1147 $REGISTERED = 1;
1148 }
1149 else {
1150 $answer =~ /<header>(\S+)<\/header>/;
1151 &send_msg_to_target($answer, $server_address, $server_key, $1);
1152 }
1154 # postprocessing
1155 if( $answer =~ "<header>new_key</header>") {
1156 # set new key to global variable
1157 $answer =~ /<new_key>(\S*?)<\/new_key>/;
1158 my $new_key = $1;
1159 $server_key = $new_key;
1160 }
1161 }
1163 }
1165 return;
1166 }
1169 #==== MAIN = main ==============================================================
1170 # parse commandline options
1171 Getopt::Long::Configure( "bundling" );
1172 GetOptions("h|help" => \&usage,
1173 "c|config=s" => \$cfg_file,
1174 "f|foreground" => \$foreground,
1175 "v|verbose+" => \$verbose,
1176 );
1178 # read and set config parameters
1179 &check_cmdline_param ;
1180 &read_configfile($cfg_file, %cfg_defaults);
1181 &check_pid;
1184 # forward error messages to logfile
1185 if ( ! $foreground ) {
1186 open( STDIN, '+>/dev/null' );
1187 open( STDOUT, '+>&STDIN' );
1188 open( STDERR, '+>&STDIN' );
1189 }
1191 # Just fork, if we are not in foreground mode
1192 if( ! $foreground ) {
1193 chdir '/' or die "Can't chdir to /: $!";
1194 $pid = fork;
1195 setsid or die "Can't start a new session: $!";
1196 umask 0;
1197 }
1198 else {
1199 $pid = $$;
1200 }
1202 # Do something useful - put our PID into the pid_file
1203 if( 0 != $pid ) {
1204 open( LOCK_FILE, ">$pid_file" );
1205 print LOCK_FILE "$pid\n";
1206 close( LOCK_FILE );
1207 if( !$foreground ) {
1208 exit( 0 )
1209 };
1210 }
1212 daemon_log(" ", 1);
1213 daemon_log("$prg started!", 1);
1215 # delete old DBsqlite lock files
1216 system('rm -f /tmp/gosa_si_lock*gosa-si-client*');
1218 # detect ip and mac address and complete host address
1219 $client_address = $client_ip.":".$client_port;
1220 my $network_interface= &get_interface_for_ip($client_ip);
1221 $client_mac_address= &get_mac($network_interface);
1222 daemon_log("gosa-si-client ip address detected: $client_ip", 1);
1223 daemon_log("gosa-si-client mac address detected: $client_mac_address", 1);
1226 # import events
1227 &import_events();
1230 # compute hardware checksum
1231 $gotoHardwareChecksum= &generate_hw_digest();
1232 daemon_log("gosa-si-client gotoHardwareChecksum detected: $gotoHardwareChecksum", 1);
1235 # create socket for incoming xml messages
1236 POE::Component::Server::TCP->new(
1237 Alias => 'gosa-si-client',
1238 Port => $client_port,
1239 ClientInput => \&server_input,
1240 );
1241 daemon_log("start socket for incoming xml messages at port '$client_port' ", 1);
1244 # prepare variables
1245 if( inet_aton($server_ip) ){ $server_ip = inet_ntoa(inet_aton($server_ip)); }
1246 ############################################################
1247 # to change
1248 if( $server_ip eq "127.0.1.1" ) { $server_ip = "127.0.0.1" }
1249 ############################################################
1250 if (defined $server_ip && defined $server_port) {
1251 $server_address = $server_ip.":".$server_port;
1252 }
1253 $xml = new XML::Simple();
1254 $default_server_key = $server_key;
1257 # add gosa-si-server address from config file at first position of server list
1258 my $server_check_cfg = Config::IniFiles->new( -file => $cfg_file );
1259 my $server_check = $server_check_cfg->val( "server", "ip");
1260 if( defined $server_check ) {
1261 unshift(@servers, $server_address);
1262 my $servers_string = join(", ", @servers);
1263 daemon_log("INFO: found servers in configuration file: $servers_string", 5);
1264 } else {
1265 my @tmp_servers;
1266 if ( !$server_domain) {
1267 # Try our DNS Searchlist
1268 for my $domain(get_dns_domains()) {
1269 chomp($domain);
1270 my @tmp_domains= &get_server_addresses($domain);
1271 if(@tmp_domains) {
1272 for my $tmp_server(@tmp_domains) {
1273 push @tmp_servers, $tmp_server;
1274 }
1275 }
1276 }
1277 if(@tmp_servers && length(@tmp_servers)==0) {
1278 daemon_log("ERROR: please specify a gosa-si-server address or a domain in config file", 1);
1279 kill 2, $$;
1280 }
1281 } else {
1282 @tmp_servers = &get_server_addresses($server_domain);
1283 if( 0 == @tmp_servers ) {
1284 daemon_log("ERROR: no gosa-si-server found in DNS for domain '$server_domain'",1);
1285 daemon_log("ERROR: please specify a gosa-si-server address or a domain in config file", 1);
1286 kill 2, $$;
1287 }
1288 }
1290 foreach my $server (@tmp_servers) {
1291 unshift(@servers, $server);
1292 }
1293 my $servers_string = join(", ", @servers);
1294 daemon_log("INFO: found servers in DNS: $servers_string", 5);
1295 }
1298 # open fifo for non-gosa-si-client-msgs to gosa-si-server
1299 POSIX::mkfifo("$gosa_si_client_fifo", "0600");
1302 POE::Session->create(
1303 inline_states => {
1304 _start => \&_start,
1305 _default => \&_default,
1306 register_at_gosa_si_server => \®ister_at_gosa_si_server,
1308 # trigger periodical tasks
1309 trigger_new_key => \&trigger_new_key,
1310 trigger_logged_in_users_report => \&trigger_logged_in_users_report,
1312 # handle records from each defined file differently
1313 fifo_record => \&fifo_got_record,
1315 # handle file resets and errors the same way for each file
1316 file_reset => \&generic_file_reset,
1317 file_error => \&generic_file_error,
1318 }
1319 );
1321 POE::Kernel->run();
1322 exit;