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;
41 my $event_dir = "/usr/lib/gosa-si/client/events";
42 use lib "/usr/lib/gosa-si/client/events";
44 my ($cfg_file, %cfg_defaults, $foreground, $verbose, $pid_file, $opts_file, $procid, $pid, $log_file, $fai_logpath);
45 my ($server_ip, $server_port, $server_key, $server_timeout, $server_domain, $server_key_lifetime);
46 my ($client_ip, $client_port, $client_mac_address, $ldap_enabled, $ldap_config, $pam_config, $nss_config);
47 my $xml;
48 my $default_server_key;
49 my $event_hash;
50 my @servers;
51 my $gotoHardwareChecksum;
52 my $gosa_si_client_fifo;
53 my %files_to_watch;
54 $verbose= 1;
56 # globalise variables which are used in imported events
57 our $cfg_file;
58 our $server_address;
59 our $client_address;
60 our $server_key;
62 # default variables
63 our $REGISTERED = 0;
65 # path to fifo for non-gosa-si-client messages to gosa-si-server
66 $gosa_si_client_fifo = "/var/run/gosa-si-client.socket";
67 %files_to_watch = (fifo => $gosa_si_client_fifo);
69 # in function register_at_gosa_si_server, after which period of seconds a new registration should be tried if a registration was
70 # not successful until now
71 my $delay_set_time = 5;
72 our $prg= basename($0);
74 %cfg_defaults = (
75 "general" =>
76 {"log-file" => [\$log_file, "/var/run/".$prg.".log"],
77 "pid-file" => [\$pid_file, "/var/run/".$prg.".pid"],
78 "opts-file" => [\$opts_file, "/var/run/".$prg.".opts"],
79 },
80 "client" =>
81 {"port" => [\$client_port, "20083"],
82 "ip" => [\$client_ip, "0.0.0.0"],
83 "mac-address" => [\$client_mac_address, "00:00:00:00:00:00"],
84 "server-domain" => [\$server_domain, ""],
85 "ldap" => [\$ldap_enabled, 1],
86 "ldap-config" => [\$ldap_config, "/etc/ldap/ldap.conf"],
87 "pam-config" => [\$pam_config, "/etc/pam_ldap.conf"],
88 "nss-config" => [\$nss_config, "/etc/libnss_ldap.conf"],
89 "fai-logpath" => [\$fai_logpath, "/var/log/fai/fai.log"],
90 },
91 "server" => {
92 "ip" => [\$server_ip, "127.0.0.1"],
93 "port" => [\$server_port, "20081"],
94 "key" => [\$server_key, ""],
95 "timeout" => [\$server_timeout, 10],
96 "key-lifetime" => [\$server_key_lifetime, 600],
97 },
99 );
102 #=== FUNCTIONS = functions =====================================================
104 #=== FUNCTION ================================================================
105 # NAME: check_cmdline_param
106 # PARAMETERS:
107 # RETURNS:
108 # DESCRIPTION:
109 #===============================================================================
110 sub check_cmdline_param () {
111 my $err_config;
112 my $err_counter = 0;
113 if(not defined($cfg_file)) {
114 $cfg_file = "/etc/gosa-si/client.conf";
115 if(! -r $cfg_file) {
116 $err_config = "please specify a config file";
117 $err_counter += 1;
118 }
119 }
120 if( $err_counter > 0 ) {
121 &usage( "", 1 );
122 if( defined( $err_config)) { print STDERR "$err_config\n"}
123 print STDERR "\n";
124 exit( -1 );
125 }
126 }
129 #=== FUNCTION ================================================================
130 # NAME: read_configfile
131 # PARAMETERS: cfg_file - string -
132 # RETURNS:
133 # DESCRIPTION:
134 #===============================================================================
135 sub read_configfile {
136 my ($cfg_file, %cfg_defaults) = @_ ;
137 my $cfg;
138 if( defined( $cfg_file) && ( length($cfg_file) > 0 )) {
139 if( -r $cfg_file ) {
140 $cfg = Config::IniFiles->new( -file => $cfg_file );
141 } else {
142 print STDERR "Couldn't read config file!";
143 }
144 } else {
145 $cfg = Config::IniFiles->new() ;
146 }
147 foreach my $section (keys %cfg_defaults) {
148 foreach my $param (keys %{$cfg_defaults{ $section }}) {
149 my $pinfo = $cfg_defaults{ $section }{ $param };
150 ${@$pinfo[ 0 ]} = $cfg->val( $section, $param, @$pinfo[ 1 ] );
151 }
152 }
153 }
156 #=== FUNCTION ================================================================
157 # NAME: check_pid
158 # PARAMETERS:
159 # RETURNS:
160 # DESCRIPTION:
161 #===============================================================================
162 sub check_pid {
163 $pid = -1;
164 # Check, if we are already running
165 if( open(LOCK_FILE, "<$pid_file") ) {
166 $pid = <LOCK_FILE>;
167 if( defined $pid ) {
168 chomp( $pid );
169 if( -f "/proc/$pid/stat" ) {
170 my($stat) = `cat /proc/$pid/stat` =~ m/$pid \((.+)\).*/;
171 if( $0 eq $stat ) {
172 close( LOCK_FILE );
173 exit -1;
174 }
175 }
176 }
177 close( LOCK_FILE );
178 unlink( $pid_file );
179 }
181 # create a syslog msg if it is not to possible to open PID file
182 if (not sysopen(LOCK_FILE, $pid_file, O_WRONLY|O_CREAT|O_EXCL, 0644)) {
183 my($msg) = "Couldn't obtain lockfile '$pid_file' ";
184 if (open(LOCK_FILE, '<', $pid_file)
185 && ($pid = <LOCK_FILE>))
186 {
187 chomp($pid);
188 $msg .= "(PID $pid)\n";
189 } else {
190 $msg .= "(unable to read PID)\n";
191 }
192 if( ! ($foreground) ) {
193 openlog( $0, "cons,pid", "daemon" );
194 syslog( "warning", $msg );
195 closelog();
196 }
197 else {
198 print( STDERR " $msg " );
199 }
200 exit( -1 );
201 }
202 }
205 sub sig_int_handler {
206 my ($signal) = @_;
208 daemon_log("shutting down gosa-si-server", 1);
209 exit(1);
210 }
211 $SIG{INT} = \&sig_int_handler;
214 #=== FUNCTION ================================================================
215 # NAME: logging
216 # PARAMETERS: level - string - default 'info'
217 # msg - string -
218 # facility - string - default 'LOG_DAEMON'
219 # RETURNS:
220 # DESCRIPTION:
221 #===============================================================================
222 sub daemon_log {
223 # log into log_file
224 my( $msg, $level ) = @_;
225 if(not defined $msg) { return }
226 if(not defined $level) { $level = 1 }
227 if(defined $log_file){
228 open(LOG_HANDLE, ">>$log_file");
229 if(not defined open( LOG_HANDLE, ">>$log_file" )) {
230 print STDERR "cannot open $log_file: $!";
231 return }
232 chomp($msg);
233 if($level <= $verbose){
234 my ($seconds, $minutes, $hours, $monthday, $month,
235 $year, $weekday, $yearday, $sommertime) = localtime(time);
236 $hours = $hours < 10 ? $hours = "0".$hours : $hours;
237 $minutes = $minutes < 10 ? $minutes = "0".$minutes : $minutes;
238 $seconds = $seconds < 10 ? $seconds = "0".$seconds : $seconds;
239 my @monthnames = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
240 $month = $monthnames[$month];
241 $monthday = $monthday < 10 ? $monthday = "0".$monthday : $monthday;
242 $year+=1900;
244 my $log_msg = "$month $monthday $hours:$minutes:$seconds $prg $msg\n";
245 print LOG_HANDLE $log_msg;
246 if( $foreground ) {
247 print STDERR $log_msg;
248 }
249 }
250 close( LOG_HANDLE );
251 }
252 }
255 #=== FUNCTION ================================================================
256 # NAME: get_interfaces
257 # PARAMETERS: none
258 # RETURNS: (list of interfaces)
259 # DESCRIPTION: Uses proc fs (/proc/net/dev) to get list of interfaces.
260 #===============================================================================
261 sub get_interfaces {
262 my @result;
263 my $PROC_NET_DEV= ('/proc/net/dev');
265 open(PROC_NET_DEV, "<$PROC_NET_DEV")
266 or die "Could not open $PROC_NET_DEV";
268 my @ifs = <PROC_NET_DEV>;
270 close(PROC_NET_DEV);
272 # Eat first two line
273 shift @ifs;
274 shift @ifs;
276 chomp @ifs;
277 foreach my $line(@ifs) {
278 my $if= (split /:/, $line)[0];
279 $if =~ s/^\s+//;
280 push @result, $if;
281 }
283 return @result;
284 }
286 #=== FUNCTION ================================================================
287 # NAME: get_mac
288 # PARAMETERS: interface name (i.e. eth0)
289 # RETURNS: (mac address)
290 # DESCRIPTION: Uses ioctl to get mac address directly from system.
291 #===============================================================================
292 sub get_mac {
293 my $ifreq= shift;
294 my $result;
295 if ($ifreq && length($ifreq) > 0) {
296 if($ifreq eq "all") {
297 if(defined($server_ip)) {
298 $result = &get_local_mac_for_remote_ip($server_ip);
299 }
300 elsif ($client_mac_address && length($client_mac_address) > 0 && !($client_mac_address eq "00:00:00:00:00:00")){
301 $result = &client_mac_address;
302 }
303 else {
304 $result = "00:00:00:00:00:00";
305 }
306 } else {
307 my $SIOCGIFHWADDR= 0x8927; # man 2 ioctl_list
309 # A configured MAC Address should always override a guessed value
310 if ($client_mac_address and length($client_mac_address) > 0 and not($client_mac_address eq "00:00:00:00:00:00")) {
311 $result= $client_mac_address;
312 }
313 else {
314 socket SOCKET, PF_INET, SOCK_DGRAM, getprotobyname('ip')
315 or die "socket: $!";
317 if(ioctl SOCKET, $SIOCGIFHWADDR, $ifreq) {
318 my ($if, $mac)= unpack 'h36 H12', $ifreq;
320 if (length($mac) > 0) {
321 $mac=~ m/^([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])$/;
322 $mac= sprintf("%s:%s:%s:%s:%s:%s", $1, $2, $3, $4, $5, $6);
323 $result = $mac;
324 }
325 }
326 }
327 }
328 }
329 return $result;
330 }
333 #=== FUNCTION ================================================================
334 # NAME: get_interface_for_ip
335 # PARAMETERS: ip address (i.e. 192.168.0.1)
336 # RETURNS: array: list of interfaces if ip=0.0.0.0, matching interface if found, undef else
337 # DESCRIPTION: Uses proc fs (/proc/net/dev) to get list of interfaces.
338 #===============================================================================
339 sub get_interface_for_ip {
340 my $result;
341 my $ip= shift;
342 if ($ip && length($ip) > 0) {
343 my @ifs= &get_interfaces();
344 if($ip eq "0.0.0.0") {
345 $result = "all";
346 } else {
347 foreach (@ifs) {
348 my $if=$_;
349 if(get_ip($if) eq $ip) {
350 $result = $if;
351 last;
352 }
353 }
354 }
355 }
356 return $result;
357 }
360 #=== FUNCTION ================================================================
361 # NAME: get_ip
362 # PARAMETERS: interface name (i.e. eth0)
363 # RETURNS: (ip address)
364 # DESCRIPTION: Uses ioctl to get ip address directly from system.
365 #===============================================================================
366 sub get_ip {
367 my $ifreq= shift;
368 my $result= "";
369 my $SIOCGIFADDR= 0x8915; # man 2 ioctl_list
370 my $proto= getprotobyname('ip');
372 socket SOCKET, PF_INET, SOCK_DGRAM, $proto
373 or die "socket: $!";
375 if(ioctl SOCKET, $SIOCGIFADDR, $ifreq) {
376 my ($if, $sin) = unpack 'a16 a16', $ifreq;
377 my ($port, $addr) = sockaddr_in $sin;
378 my $ip = inet_ntoa $addr;
380 if ($ip && length($ip) > 0) {
381 $result = $ip;
382 }
383 }
385 return $result;
386 }
389 #=== FUNCTION ================================================================
390 # NAME: get_local_mac_for_remote_ip
391 # PARAMETERS: none (takes server_ip from global variable)
392 # RETURNS: (ip address from interface that is used for communication)
393 # DESCRIPTION: Uses ioctl to get routing table from system, checks which entry
394 # matches (defaultroute last).
395 #===============================================================================
396 sub get_local_mac_for_remote_ip {
397 my $server_ip= shift;
398 my $result= "00:00:00:00:00:00";
400 if($server_ip =~ /^(\d\d?\d?\.){3}\d\d?\d?$/) {
401 my $PROC_NET_ROUTE= ('/proc/net/route');
403 open(PROC_NET_ROUTE, "<$PROC_NET_ROUTE")
404 or die "Could not open $PROC_NET_ROUTE";
406 my @ifs = <PROC_NET_ROUTE>;
408 close(PROC_NET_ROUTE);
410 # Eat header line
411 shift @ifs;
412 chomp @ifs;
413 foreach my $line(@ifs) {
414 my ($Iface,$Destination,$Gateway,$Flags,$RefCnt,$Use,$Metric,$Mask,$MTU,$Window,$IRTT)=split(/\s/, $line);
415 my $destination;
416 my $mask;
417 my ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Destination);
418 $destination= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
419 ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Mask);
420 $mask= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
421 if(new NetAddr::IP($server_ip)->within(new NetAddr::IP($destination, $mask))) {
422 # destination matches route, save mac and exit
423 $result= &get_mac($Iface);
424 last;
425 }
426 }
427 } else {
428 daemon_log("get_local_mac_for_remote_ip was called with a non-ip parameter: $server_ip", 1);
429 }
430 return $result;
431 }
433 sub get_local_ip_for_remote_ip {
434 my $server_ip= shift;
435 my $result="0.0.0.0";
437 if($server_ip =~ /^(\d\d?\d?\.){3}\d\d?\d?$/) {
438 if($server_ip eq "127.0.0.1") {
439 $result="127.0.0.1";
440 } else {
441 my $PROC_NET_ROUTE= ('/proc/net/route');
443 open(PROC_NET_ROUTE, "<$PROC_NET_ROUTE")
444 or die "Could not open $PROC_NET_ROUTE";
446 my @ifs = <PROC_NET_ROUTE>;
448 close(PROC_NET_ROUTE);
450 # Eat header line
451 shift @ifs;
452 chomp @ifs;
453 foreach my $line(@ifs) {
454 my ($Iface,$Destination,$Gateway,$Flags,$RefCnt,$Use,$Metric,$Mask,$MTU,$Window,$IRTT)=split(/\s/, $line);
455 my $destination;
456 my $mask;
457 my ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Destination);
458 $destination= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
459 ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Mask);
460 $mask= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
461 if(new NetAddr::IP($server_ip)->within(new NetAddr::IP($destination, $mask))) {
462 # destination matches route, save mac and exit
463 $result= &get_ip($Iface);
464 last;
465 }
466 }
467 }
468 } else {
469 daemon_log("get_local_ip_for_remote_ip was called with a non-ip parameter: $server_ip", 1);
470 }
471 return $result;
472 }
475 sub generate_hw_digest {
476 my $hw_data;
477 foreach my $line (split /\n/, `cat /proc/bus/pci/devices`) {
478 $hw_data.= sprintf "%s", $line =~ /[^\s]+\s([^\s]+)\s.*/;
479 }
480 return(md5_base64($hw_data));
481 }
484 sub create_passwd {
485 my $new_passwd = "";
486 for(my $i=0; $i<31; $i++) {
487 $new_passwd .= ("a".."z","A".."Z",0..9)[int(rand(62))]
488 }
490 return $new_passwd;
491 }
494 sub create_ciphering {
495 my ($passwd) = @_;
496 if((!defined($passwd)) || length($passwd)==0) {
497 $passwd = "";
498 }
499 $passwd = substr(md5_hex("$passwd") x 32, 0, 32);
500 my $iv = substr(md5_hex('GONICUS GmbH'),0, 16);
501 my $my_cipher = Crypt::Rijndael->new($passwd , Crypt::Rijndael::MODE_CBC());
502 $my_cipher->set_iv($iv);
503 return $my_cipher;
504 }
507 sub encrypt_msg {
508 my ($msg, $key) = @_;
509 my $my_cipher = &create_ciphering($key);
510 my $len;
511 {
512 use bytes;
513 $len= 16-length($msg)%16;
514 }
515 $msg = "\0"x($len).$msg;
516 $msg = $my_cipher->encrypt($msg);
517 chomp($msg = &encode_base64($msg));
518 # there are no newlines allowed inside msg
519 $msg=~ s/\n//g;
520 return $msg;
521 }
524 sub decrypt_msg {
526 my ($msg, $key) = @_ ;
527 $msg = &decode_base64($msg);
528 my $my_cipher = &create_ciphering($key);
529 $msg = $my_cipher->decrypt($msg);
530 $msg =~ s/\0*//g;
531 return $msg;
532 }
535 sub get_server_addresses {
536 my $domain= shift;
537 my @result;
539 my $error = 0;
540 my $res = Net::DNS::Resolver->new;
541 my $query = $res->send("_gosa-si._tcp.".$domain, "SRV");
542 my @hits;
544 if ($query) {
545 foreach my $rr ($query->answer) {
546 push(@hits, $rr->target.":".$rr->port);
547 }
548 }
549 else {
550 #warn "query failed: ", $res->errorstring, "\n";
551 $error++;
552 }
554 if( $error == 0 ) {
555 foreach my $hit (@hits) {
556 my ($hit_name, $hit_port) = split(/:/, $hit);
557 chomp($hit_name);
558 chomp($hit_port);
560 my $address_query = $res->send($hit_name);
561 if( 1 == length($address_query->answer) ) {
562 foreach my $rr ($address_query->answer) {
563 push(@result, $rr->address.":".$hit_port);
564 }
565 }
566 }
567 }
569 return @result;
570 }
573 #=== FUNCTION ================================================================
574 # NAME: send_msg_hash_to_target
575 # PARAMETERS: msg_hash - hash - xml_hash created with function create_xml_hash
576 # PeerAddr string - socket address to send msg
577 # PeerPort string - socket port, if not included in socket address
578 # RETURNS: nothing
579 # DESCRIPTION: ????
580 #===============================================================================
581 sub send_msg_hash_to_target {
582 my ($msg_hash, $address, $encrypt_key) = @_ ;
583 my $msg = &create_xml_string($msg_hash);
584 my $header = @{$msg_hash->{'header'}}[0];
585 my $error = &send_msg_to_target($msg, $address, $encrypt_key, $header);
587 return $error;
588 }
591 sub send_msg_to_target {
592 my ($msg, $address, $encrypt_key, $msg_header) = @_ ;
593 my $error = 0;
595 if( $msg_header ) {
596 $msg_header = "'$msg_header'-";
597 }
598 else {
599 $msg_header = "";
600 }
602 # encrypt xml msg
603 my $crypted_msg = &encrypt_msg($msg, $encrypt_key);
605 # opensocket
606 my $socket = &open_socket($address);
607 if( !$socket ) {
608 daemon_log("cannot send ".$msg_header."msg to $address , host not reachable", 1);
609 $error++;
610 }
612 if( $error == 0 ) {
613 # send xml msg
614 print $socket $crypted_msg."\n";
616 daemon_log("send ".$msg_header."msg to $address", 1);
617 daemon_log("message:\n$msg", 8);
619 }
621 # close socket in any case
622 if( $socket ) {
623 close $socket;
624 }
626 return $error;
627 }
630 sub write_to_file {
631 my ($string, $file) = @_;
632 my $error = 0;
634 if( not defined $file || not -f $file ) {
635 &main::daemon_log("ERROR: $prg: check '-f file' failed: $file", 1);
636 $error++;
637 }
638 if( not defined $string || 0 == length($string)) {
639 &main::daemon_log("ERROR: $prg: empty string to write to file '$file'", 1);
640 $error++;
641 }
643 if( $error == 0 ) {
645 chomp($string);
647 open(FILE, ">> $file");
648 print FILE $string."\n";
649 close(FILE);
650 }
652 return;
653 }
656 sub open_socket {
657 my ($PeerAddr, $PeerPort) = @_ ;
658 if(defined($PeerPort)){
659 $PeerAddr = $PeerAddr.":".$PeerPort;
660 }
661 my $socket;
662 $socket = new IO::Socket::INET(PeerAddr => $PeerAddr,
663 Porto => "tcp",
664 Type => SOCK_STREAM,
665 Timeout => 5,
666 );
667 if(not defined $socket) {
668 return;
669 }
670 &daemon_log("open_socket: $PeerAddr", 7);
671 return $socket;
672 }
675 #=== FUNCTION ================================================================
676 # NAME: register_at_server
677 # PARAMETERS:
678 # RETURNS:
679 # DESCRIPTION:
680 #===============================================================================
681 sub register_at_gosa_si_server {
682 my ($kernel) = $_[KERNEL];
683 my $try_to_register = 0;
685 if( not $REGISTERED ) {
686 # create new passwd and ciphering object for client-server communication
687 $server_key = &create_passwd();
689 my $events = join( ",", keys %{$event_hash} );
690 while(1) {
692 if( $try_to_register >= @servers ) {
693 last;
694 }
696 # fetch first gosa-si-server from @servers
697 my $server = shift(@servers);
699 # append shifted gosa-si-server at the end of @servers, so looking for servers never stop if
700 # a registration never occured
701 push( @servers, $server );
703 # Check if our ip is resolvable - if not: don't try to register
704 my $ip= &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
705 my $dnsname= gethostbyaddr(inet_aton($ip), AF_INET);
706 if(!defined($dnsname)) {
707 &write_to_file("goto-error-dns:$ip", $fai_logpath);
708 exit(1);
709 }
711 # create registration msg
712 my $local_ip = &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
713 my $local_mac = &get_local_mac_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
714 my $register_hash = &create_xml_hash("here_i_am", $local_ip.":".$client_port, $server);
715 &add_content2xml_hash($register_hash, "new_passwd", $server_key);
716 &add_content2xml_hash($register_hash, "mac_address", $local_mac);
717 &add_content2xml_hash($register_hash, "events", $events);
718 &add_content2xml_hash($register_hash, "gotoHardwareChecksum", $gotoHardwareChecksum);
720 # send xml hash to server with general server passwd
721 my $res = &send_msg_hash_to_target($register_hash, $server, $default_server_key);
722 if($res == 0) {
723 # reset try_to_register
724 $try_to_register = 0;
726 # Set fixed client address and mac address
727 $client_ip= &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
728 $client_address= "$client_ip:$client_port";
729 $client_mac_address = $local_mac;
731 # Write the MAC address to file
732 if(stat($opts_file)) {
733 unlink($opts_file);
734 }
736 my $opts_file_FH;
737 my $hostname= $dnsname;
738 $hostname =~ s/\..*$//;
739 open($opts_file_FH, ">$opts_file");
740 print $opts_file_FH "MAC=\"$local_mac\"\n";
741 print $opts_file_FH "IPADDRESS=\"$client_ip\"\n";
742 print $opts_file_FH "HOSTNAME=\"$hostname\"\n";
743 print $opts_file_FH "FQDN=\"$dnsname\"\n";
744 close($opts_file_FH);
745 last;
746 } else {
747 $try_to_register++;
749 # wait 1 sec until trying to register again
750 sleep(1);
751 next;
752 }
753 }
755 if( $try_to_register >= @servers ) {
756 &write_to_file("gosa-si-no-server-available", $fai_logpath);
757 $kernel->delay_set('register_at_gosa_si_server', $delay_set_time);
758 }
759 else {
760 daemon_log("INFO: waiting for msg 'register_at_gosa_si_server'",5);
761 $kernel->delay_set('register_at_gosa_si_server', $delay_set_time);
762 # clear old settings and set it again
763 $kernel->delay_set('trigger_new_key', $server_key_lifetime);
764 }
765 }
766 return;
767 }
770 sub check_key_and_xml_validity {
771 my ($crypted_msg, $module_key) = @_;
773 my $msg;
774 my $msg_hash;
775 eval{
776 $msg = &decrypt_msg($crypted_msg, $module_key);
777 &main::daemon_log("decrypted_msg: \n$msg", 8);
779 $msg_hash = $xml->XMLin($msg, ForceArray=>1);
781 ##############
782 # check header
783 my $header_l = $msg_hash->{'header'};
784 if( 1 != @{$header_l} ) {
785 die 'no or more headers specified';
786 }
787 my $header = @{$header_l}[0];
788 if( 0 == length $header) {
789 die 'header has length 0';
790 }
792 ##############
793 # check source
794 my $source_l = $msg_hash->{'source'};
795 if( 1 != @{$source_l} ) {
796 die 'no or more than 1 sources specified';
797 }
798 my $source = @{$source_l}[0];
799 if( 0 == length $source) {
800 die 'source has length 0';
801 }
802 unless( $source =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ) {
803 die "source '$source' is neither a complete ip-address with port nor 'GOSA'";
804 }
806 ##############
807 # check target
808 my $target_l = $msg_hash->{'target'};
809 if( 1 != @{$target_l} ) {
810 die 'no or more than 1 targets specified ';
811 }
812 my $target = @{$target_l}[0];
813 if( 0 == length $target) {
814 die 'target has length 0 ';
815 }
816 unless( $target =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ){
817 die "source is neither a complete ip-address with port nor 'GOSA'";
818 }
819 };
820 if($@) {
821 &main::daemon_log("WARNING: do not understand the message or msg is not gosa-si envelope conform:", 5);
822 &main::daemon_log("$@", 8);
823 $msg = undef;
824 $msg_hash = undef;
825 }
827 return ($msg, $msg_hash);
828 }
831 sub check_outgoing_xml_validity {
832 my ($msg) = @_;
834 my $msg_hash;
835 eval{
836 $msg_hash = $xml->XMLin($msg, ForceArray=>1);
838 ##############
839 # check header
840 my $header_l = $msg_hash->{'header'};
841 if( 1 != @{$header_l} ) {
842 die 'no or more than one headers specified';
843 }
844 my $header = @{$header_l}[0];
845 if( 0 == length $header) {
846 die 'header has length 0';
847 }
849 ##############
850 # check source
851 my $source_l = $msg_hash->{'source'};
852 if( 1 != @{$source_l} ) {
853 die 'no or more than 1 sources specified';
854 }
855 my $source = @{$source_l}[0];
856 if( 0 == length $source) {
857 die 'source has length 0';
858 }
859 unless( $source =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ||
860 $source =~ /^GOSA$/i ) {
861 die "source '$source' is neither a complete ip-address with port";
862 }
864 ##############
865 # check target
866 my $target_l = $msg_hash->{'target'};
867 if( 1 != @{$target_l} ) {
868 die "no or more than one targets specified";
869 }
870 foreach my $target (@$target_l) {
871 if( 0 == length $target) {
872 die "target has length 0";
873 }
874 unless( $target =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ) {
875 die "target '$target' is not a complete ip-address with port or a valid target name";
876 }
877 }
878 };
879 if($@) {
880 daemon_log("WARNING: outgoing msg is not gosa-si envelope conform", 5);
881 daemon_log("$@ $msg", 8);
882 $msg_hash = undef;
883 }
884 return ($msg_hash);
885 }
888 sub import_events {
890 if (not -e $event_dir) {
891 daemon_log("ERROR: cannot find directory or directory is not readable: $event_dir", 1);
892 }
893 opendir (DIR, $event_dir) or die "ERROR while loading gosa-si-events from directory $event_dir : $!\n";
895 while (defined (my $event = readdir (DIR))) {
896 if( $event eq "." || $event eq ".." ) { next; }
898 eval{ require $event; };
899 if( $@ ) {
900 daemon_log("ERROR: import of event module '$event' failed", 1);
901 daemon_log("$@", 8);
902 next;
903 }
905 $event =~ /(\S*?).pm$/;
906 my $event_module = $1;
907 my $events_l = eval( $1."::get_events()") ;
908 foreach my $event_name (@{$events_l}) {
909 $event_hash->{$event_name} = $event_module;
910 }
912 }
914 my @all_events = keys %$event_hash;
915 my $all_events_string = join(", ", @all_events);
917 daemon_log("INFO: imported events: $all_events_string", 5);
918 }
920 sub trigger_new_key {
921 my ($kernel) = $_[KERNEL] ;
923 my $msg = "<xml><header>new_key</header><source>$client_address</source><target>$client_address</target></xml>";
924 &send_msg_to_target($msg, $client_address, $server_key, 'new_key');
926 $kernel->delay_set('trigger_new_key', $server_key_lifetime);
928 }
931 sub generic_file_reset {
932 my ( $heap, $wheel_id ) = @_[ HEAP, ARG0 ];
934 my $service = $heap->{services}->{$wheel_id};
935 daemon_log("INFO: '$service' watching reset", 5);
936 return;
937 }
939 sub generic_file_error {
940 my ( $heap, $operation, $errno, $error_string, $wheel_id ) =
941 @_[ HEAP, ARG0, ARG1, ARG2, ARG3 ];
943 my $service = $heap->{services}->{$wheel_id};
944 daemon_log("ERROR: '$service' watcher $operation error $errno: $error_string", 1);
945 daemon_log("ERROR: shutting down '$service' file watcher", 1);
947 delete $heap->{services}->{$wheel_id};
948 delete $heap->{watchers}->{$wheel_id};
949 return;
950 }
952 sub fifo_got_record {
953 my $file_record = $_[ARG0];
954 my $header;
955 my $content = "";
957 $file_record =~ /^(\S+)[ ]?([\s\S]+)?$/;
958 if( defined $1 ) {
959 $header = $1;
960 } else {
961 return;
962 }
964 if( defined $2 ) {
965 $content = $2;
966 }
968 my $clmsg_hash = &create_xml_hash("CLMSG_$header", $client_address, $server_address, $content);
969 &add_content2xml_hash($clmsg_hash, "macaddress", $client_mac_address);
970 my $clmsg = &create_xml_string($clmsg_hash);
971 &send_msg_to_target($clmsg, $server_address, $server_key);
972 return;
973 }
976 sub _start {
977 my ($kernel, $heap) = @_[KERNEL, HEAP];
978 $kernel->alias_set('client_session');
980 # force a registration at a gosa-si-server
981 $kernel->yield('register_at_gosa_si_server');
983 # install all file watcher defined
984 while( my($file_name, $file) = each %files_to_watch ) {
985 my $file_watcher = POE::Wheel::FollowTail->new(
986 Filename => $file,
987 InputEvent => $file_name."_record",
988 ResetEvent => "file_reset",
989 ErrorEvent => "file_error",
990 );
991 $heap->{services}->{ $file_watcher->ID } = $file_name;
992 $heap->{watchers}->{ $file_watcher->ID } = $file_watcher;
993 }
994 }
997 sub server_input {
998 my ($kernel, $heap, $input, $wheel) = @_[KERNEL, HEAP, ARG0, ARG1];
999 my $error = 0;
1000 my $answer;
1002 daemon_log("Incoming msg:\n$input\n", 8);
1004 my ($msg, $msg_hash) = &check_key_and_xml_validity($input, $server_key);
1005 if( (!$msg) || (!$msg_hash) ) {
1006 daemon_log("Deciphering of incoming msg failed", 5);
1007 $error++;
1008 }
1011 ######################
1012 # process incoming msg
1013 if( $error == 0 ) {
1014 my $header = @{$msg_hash->{header}}[0];
1015 my $source = @{$msg_hash->{source}}[0];
1017 if( exists $event_hash->{$header} ) {
1018 # a event exists with the header as name
1019 daemon_log("found event '$header' at event-module '".$event_hash->{$header}."'", 5);
1020 no strict 'refs';
1021 $answer = &{$event_hash->{$header}."::$header"}($msg, $msg_hash);
1022 }
1023 else {
1024 daemon_log("WARNING: no event '$header' found in event modules under $event_dir", 1);
1025 }
1026 }
1028 ########
1029 # answer
1030 if( $answer ) {
1032 #check gosa-si envelope validity
1033 my $answer_hash = &check_outgoing_xml_validity($answer);
1035 if( $answer_hash ) {
1036 # answer is valid
1038 # preprocessing
1039 if( $answer =~ "<header>registered</header>") {
1040 # set registered flag to true to stop sending further registered msgs
1041 $REGISTERED = 1;
1042 }
1043 else {
1044 &send_msg_to_target($answer, $server_address, $server_key);
1045 }
1047 # postprocessing
1048 if( $answer =~ "<header>new_key</header>") {
1049 # set new key to global variable
1050 $answer =~ /<new_key>(\S*?)<\/new_key>/;
1051 my $new_key = $1;
1052 $server_key = $new_key;
1053 }
1054 }
1056 }
1058 return;
1059 }
1062 #==== MAIN = main ==============================================================
1063 # parse commandline options
1064 Getopt::Long::Configure( "bundling" );
1065 GetOptions("h|help" => \&usage,
1066 "c|config=s" => \$cfg_file,
1067 "f|foreground" => \$foreground,
1068 "v|verbose+" => \$verbose,
1069 );
1071 # read and set config parameters
1072 &check_cmdline_param ;
1073 &read_configfile($cfg_file, %cfg_defaults);
1074 &check_pid;
1077 # forward error messages to logfile
1078 if ( ! $foreground ) {
1079 open STDIN, '/dev/null' or die "Can’t read /dev/null: $!";
1080 open STDOUT, '>>/dev/null' or die "Can't write to /dev/null: $!";
1081 open STDERR, '>>/dev/null' or die "Can't write to /dev/null: $!";
1082 }
1084 # Just fork, if we are not in foreground mode
1085 if( ! $foreground ) {
1086 chdir '/' or die "Can't chdir to /: $!";
1087 $pid = fork;
1088 setsid or die "Can't start a new session: $!";
1089 umask 0;
1090 }
1091 else {
1092 $pid = $$;
1093 }
1095 # Do something useful - put our PID into the pid_file
1096 if( 0 != $pid ) {
1097 open( LOCK_FILE, ">$pid_file" );
1098 print LOCK_FILE "$pid\n";
1099 close( LOCK_FILE );
1100 if( !$foreground ) {
1101 exit( 0 )
1102 };
1103 }
1105 daemon_log(" ", 1);
1106 daemon_log("$prg started!", 1);
1108 # delete old DBsqlite lock files
1109 system('rm -f /tmp/gosa_si_lock*gosa-si-client*');
1111 # detect ip and mac address and complete host address
1112 $client_address = $client_ip.":".$client_port;
1113 my $network_interface= &get_interface_for_ip($client_ip);
1114 $client_mac_address= &get_mac($network_interface);
1115 daemon_log("gosa-si-client ip address detected: $client_ip", 1);
1116 daemon_log("gosa-si-client mac address detected: $client_mac_address", 1);
1119 # import events
1120 &import_events();
1123 # compute hardware checksum
1124 $gotoHardwareChecksum= &generate_hw_digest();
1125 daemon_log("gosa-si-client gotoHardwareChecksum detected: $gotoHardwareChecksum", 1);
1128 # create socket for incoming xml messages
1129 POE::Component::Server::TCP->new(
1130 Alias => 'gosa-si-client',
1131 Port => $client_port,
1132 ClientInput => \&server_input,
1133 );
1134 daemon_log("start socket for incoming xml messages at port '$client_port' ", 1);
1137 # prepare variables
1138 if( inet_aton($server_ip) ){ $server_ip = inet_ntoa(inet_aton($server_ip)); }
1139 ############################################################
1140 # to change
1141 if( $server_ip eq "127.0.1.1" ) { $server_ip = "127.0.0.1" }
1142 ############################################################
1143 if (defined $server_ip && defined $server_port) {
1144 $server_address = $server_ip.":".$server_port;
1145 }
1146 $xml = new XML::Simple();
1147 $default_server_key = $server_key;
1150 # add gosa-si-server address from config file at first position of server list
1151 my $server_check_cfg = Config::IniFiles->new( -file => $cfg_file );
1152 my $server_check = $server_check_cfg->val( "server", "ip");
1153 if( defined $server_check ) {
1154 unshift(@servers, $server_address);
1155 my $servers_string = join(", ", @servers);
1156 daemon_log("INFO: found servers in configuration file: $servers_string", 5);
1157 } else {
1158 my @tmp_servers;
1159 if ( !$server_domain) {
1160 # Try our DNS Searchlist
1161 for my $domain(get_dns_domains()) {
1162 chomp($domain);
1163 my @tmp_domains= &get_server_addresses($domain);
1164 if(@tmp_domains) {
1165 for my $tmp_server(@tmp_domains) {
1166 push @tmp_servers, $tmp_server;
1167 }
1168 }
1169 }
1170 if(@tmp_servers && length(@tmp_servers)==0) {
1171 daemon_log("ERROR: please specify a gosa-si-server address or a domain in config file", 1);
1172 kill 2, $$;
1173 }
1174 } else {
1175 @tmp_servers = &get_server_addresses($server_domain);
1176 if( 0 == @tmp_servers ) {
1177 daemon_log("ERROR: no gosa-si-server found in DNS for domain '$server_domain'",1);
1178 daemon_log("ERROR: please specify a gosa-si-server address or a domain in config file", 1);
1179 kill 2, $$;
1180 }
1181 }
1183 foreach my $server (@tmp_servers) {
1184 unshift(@servers, $server);
1185 }
1186 my $servers_string = join(", ", @servers);
1187 daemon_log("INFO: found servers in DNS: $servers_string", 5);
1188 }
1191 # open fifo for non-gosa-si-client-msgs to gosa-si-server
1192 POSIX::mkfifo("$gosa_si_client_fifo", "0600");
1195 POE::Session->create(
1196 inline_states => {
1197 _start => \&_start,
1198 register_at_gosa_si_server => \®ister_at_gosa_si_server,
1199 trigger_new_key => \&trigger_new_key,
1201 # handle records from each defined file differently
1202 fifo_record => \&fifo_got_record,
1204 # handle file resets and errors the same way for each file
1205 file_reset => \&generic_file_reset,
1206 file_error => \&generic_file_error,
1207 }
1208 );
1210 POE::Kernel->run();
1211 exit;