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_defaults, $foreground, $verbose, $pid_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 $opts_file;
59 our $server_address;
60 our $client_address;
61 our $client_ip;
62 our $client_mac_address;
63 our $client_dnsname;
64 our $server_key;
66 # default variables
67 our $REGISTERED = 0;
69 # path to fifo for non-gosa-si-client messages to gosa-si-server
70 $gosa_si_client_fifo = "/var/run/gosa-si-client.socket";
71 %files_to_watch = (fifo => $gosa_si_client_fifo);
73 # in function register_at_gosa_si_server, after which period of seconds a new registration should be tried if a registration was
74 # not successful until now
75 my $delay_set_time = 5;
76 our $prg= basename($0);
78 %cfg_defaults = (
79 "general" =>
80 {"log-file" => [\$log_file, "/var/run/".$prg.".log"],
81 "pid-file" => [\$pid_file, "/var/run/".$prg.".pid"],
82 "opts-file" => [\$opts_file, "/var/run/".$prg.".opts"],
83 },
84 "client" =>
85 {"port" => [\$client_port, "20083"],
86 "ip" => [\$client_ip, "0.0.0.0"],
87 "mac-address" => [\$client_mac_address, "00:00:00:00:00:00"],
88 "server-domain" => [\$server_domain, ""],
89 "ldap" => [\$ldap_enabled, 1],
90 "ldap-config" => [\$ldap_config, "/etc/ldap/ldap.conf"],
91 "pam-config" => [\$pam_config, "/etc/pam_ldap.conf"],
92 "nss-config" => [\$nss_config, "/etc/libnss_ldap.conf"],
93 "fai-logpath" => [\$fai_logpath, "/var/log/fai/fai.log"],
94 },
95 "server" => {
96 "ip" => [\$server_ip, "127.0.0.1"],
97 "port" => [\$server_port, "20081"],
98 "key" => [\$server_key, ""],
99 "timeout" => [\$server_timeout, 10],
100 "key-lifetime" => [\$server_key_lifetime, 600],
101 },
103 );
106 #=== FUNCTIONS = functions =====================================================
108 #=== FUNCTION ================================================================
109 # NAME: check_cmdline_param
110 # PARAMETERS:
111 # RETURNS:
112 # DESCRIPTION:
113 #===============================================================================
114 sub check_cmdline_param () {
115 my $err_config;
116 my $err_counter = 0;
117 if(not defined($cfg_file)) {
118 $cfg_file = "/etc/gosa-si/client.conf";
119 if(! -r $cfg_file) {
120 $err_config = "please specify a config file";
121 $err_counter += 1;
122 }
123 }
124 if( $err_counter > 0 ) {
125 &usage( "", 1 );
126 if( defined( $err_config)) { print STDERR "$err_config\n"}
127 print STDERR "\n";
128 exit( -1 );
129 }
130 }
133 #=== FUNCTION ================================================================
134 # NAME: read_configfile
135 # PARAMETERS: cfg_file - string -
136 # RETURNS:
137 # DESCRIPTION:
138 #===============================================================================
139 sub read_configfile {
140 my ($cfg_file, %cfg_defaults) = @_ ;
141 my $cfg;
142 if( defined( $cfg_file) && ( length($cfg_file) > 0 )) {
143 if( -r $cfg_file ) {
144 $cfg = Config::IniFiles->new( -file => $cfg_file );
145 } else {
146 print STDERR "Couldn't read config file!";
147 }
148 } else {
149 $cfg = Config::IniFiles->new() ;
150 }
151 foreach my $section (keys %cfg_defaults) {
152 foreach my $param (keys %{$cfg_defaults{ $section }}) {
153 my $pinfo = $cfg_defaults{ $section }{ $param };
154 ${@$pinfo[ 0 ]} = $cfg->val( $section, $param, @$pinfo[ 1 ] );
155 }
156 }
157 }
160 #=== FUNCTION ================================================================
161 # NAME: check_pid
162 # PARAMETERS:
163 # RETURNS:
164 # DESCRIPTION:
165 #===============================================================================
166 sub check_pid {
167 $pid = -1;
168 # Check, if we are already running
169 if( open(LOCK_FILE, "<$pid_file") ) {
170 $pid = <LOCK_FILE>;
171 if( defined $pid ) {
172 chomp( $pid );
173 if( -f "/proc/$pid/stat" ) {
174 my($stat) = `cat /proc/$pid/stat` =~ m/$pid \((.+)\).*/;
175 if( $0 eq $stat ) {
176 close( LOCK_FILE );
177 exit -1;
178 }
179 }
180 }
181 close( LOCK_FILE );
182 unlink( $pid_file );
183 }
185 # create a syslog msg if it is not to possible to open PID file
186 if (not sysopen(LOCK_FILE, $pid_file, O_WRONLY|O_CREAT|O_EXCL, 0644)) {
187 my($msg) = "Couldn't obtain lockfile '$pid_file' ";
188 if (open(LOCK_FILE, '<', $pid_file)
189 && ($pid = <LOCK_FILE>))
190 {
191 chomp($pid);
192 $msg .= "(PID $pid)\n";
193 } else {
194 $msg .= "(unable to read PID)\n";
195 }
196 if( ! ($foreground) ) {
197 openlog( $0, "cons,pid", "daemon" );
198 syslog( "warning", $msg );
199 closelog();
200 }
201 else {
202 print( STDERR " $msg " );
203 }
204 exit( -1 );
205 }
206 }
209 sub sig_int_handler {
210 my ($signal) = @_;
212 daemon_log("shutting down gosa-si-server", 1);
213 exit(1);
214 }
215 $SIG{INT} = \&sig_int_handler;
218 #=== FUNCTION ================================================================
219 # NAME: logging
220 # PARAMETERS: level - string - default 'info'
221 # msg - string -
222 # facility - string - default 'LOG_DAEMON'
223 # RETURNS:
224 # DESCRIPTION:
225 #===============================================================================
226 sub daemon_log {
227 # log into log_file
228 my( $msg, $level ) = @_;
229 if(not defined $msg) { return }
230 if(not defined $level) { $level = 1 }
231 if(defined $log_file){
232 open(LOG_HANDLE, ">>$log_file");
233 if(not defined open( LOG_HANDLE, ">>$log_file" )) {
234 print STDERR "cannot open $log_file: $!";
235 return }
236 chomp($msg);
237 if($level <= $verbose){
238 my ($seconds, $minutes, $hours, $monthday, $month,
239 $year, $weekday, $yearday, $sommertime) = localtime(time);
240 $hours = $hours < 10 ? $hours = "0".$hours : $hours;
241 $minutes = $minutes < 10 ? $minutes = "0".$minutes : $minutes;
242 $seconds = $seconds < 10 ? $seconds = "0".$seconds : $seconds;
243 my @monthnames = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
244 $month = $monthnames[$month];
245 $monthday = $monthday < 10 ? $monthday = "0".$monthday : $monthday;
246 $year+=1900;
248 my $log_msg = "$month $monthday $hours:$minutes:$seconds $prg $msg\n";
249 print LOG_HANDLE $log_msg;
250 if( $foreground ) {
251 print STDERR $log_msg;
252 }
253 }
254 close( LOG_HANDLE );
255 }
256 }
259 #=== FUNCTION ================================================================
260 # NAME: get_interfaces
261 # PARAMETERS: none
262 # RETURNS: (list of interfaces)
263 # DESCRIPTION: Uses proc fs (/proc/net/dev) to get list of interfaces.
264 #===============================================================================
265 sub get_interfaces {
266 my @result;
267 my $PROC_NET_DEV= ('/proc/net/dev');
269 open(PROC_NET_DEV, "<$PROC_NET_DEV")
270 or die "Could not open $PROC_NET_DEV";
272 my @ifs = <PROC_NET_DEV>;
274 close(PROC_NET_DEV);
276 # Eat first two line
277 shift @ifs;
278 shift @ifs;
280 chomp @ifs;
281 foreach my $line(@ifs) {
282 my $if= (split /:/, $line)[0];
283 $if =~ s/^\s+//;
284 push @result, $if;
285 }
287 return @result;
288 }
290 #=== FUNCTION ================================================================
291 # NAME: get_mac
292 # PARAMETERS: interface name (i.e. eth0)
293 # RETURNS: (mac address)
294 # DESCRIPTION: Uses ioctl to get mac address directly from system.
295 #===============================================================================
296 sub get_mac {
297 my $ifreq= shift;
298 my $result;
299 if ($ifreq && length($ifreq) > 0) {
300 if($ifreq eq "all") {
301 if(defined($server_ip)) {
302 $result = &get_local_mac_for_remote_ip($server_ip);
303 }
304 elsif ($client_mac_address && length($client_mac_address) > 0 && !($client_mac_address eq "00:00:00:00:00:00")){
305 $result = &client_mac_address;
306 }
307 else {
308 $result = "00:00:00:00:00:00";
309 }
310 } else {
311 my $SIOCGIFHWADDR= 0x8927; # man 2 ioctl_list
313 # A configured MAC Address should always override a guessed value
314 if ($client_mac_address and length($client_mac_address) > 0 and not($client_mac_address eq "00:00:00:00:00:00")) {
315 $result= $client_mac_address;
316 }
317 else {
318 socket SOCKET, PF_INET, SOCK_DGRAM, getprotobyname('ip')
319 or die "socket: $!";
321 if(ioctl SOCKET, $SIOCGIFHWADDR, $ifreq) {
322 my ($if, $mac)= unpack 'h36 H12', $ifreq;
324 if (length($mac) > 0) {
325 $mac=~ m/^([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])$/;
326 $mac= sprintf("%s:%s:%s:%s:%s:%s", $1, $2, $3, $4, $5, $6);
327 $result = $mac;
328 }
329 }
330 }
331 }
332 }
333 return $result;
334 }
337 #=== FUNCTION ================================================================
338 # NAME: get_interface_for_ip
339 # PARAMETERS: ip address (i.e. 192.168.0.1)
340 # RETURNS: array: list of interfaces if ip=0.0.0.0, matching interface if found, undef else
341 # DESCRIPTION: Uses proc fs (/proc/net/dev) to get list of interfaces.
342 #===============================================================================
343 sub get_interface_for_ip {
344 my $result;
345 my $ip= shift;
346 if ($ip && length($ip) > 0) {
347 my @ifs= &get_interfaces();
348 if($ip eq "0.0.0.0") {
349 $result = "all";
350 } else {
351 foreach (@ifs) {
352 my $if=$_;
353 if(get_ip($if) eq $ip) {
354 $result = $if;
355 last;
356 }
357 }
358 }
359 }
360 return $result;
361 }
364 #=== FUNCTION ================================================================
365 # NAME: get_ip
366 # PARAMETERS: interface name (i.e. eth0)
367 # RETURNS: (ip address)
368 # DESCRIPTION: Uses ioctl to get ip address directly from system.
369 #===============================================================================
370 sub get_ip {
371 my $ifreq= shift;
372 my $result= "";
373 my $SIOCGIFADDR= 0x8915; # man 2 ioctl_list
374 my $proto= getprotobyname('ip');
376 socket SOCKET, PF_INET, SOCK_DGRAM, $proto
377 or die "socket: $!";
379 if(ioctl SOCKET, $SIOCGIFADDR, $ifreq) {
380 my ($if, $sin) = unpack 'a16 a16', $ifreq;
381 my ($port, $addr) = sockaddr_in $sin;
382 my $ip = inet_ntoa $addr;
384 if ($ip && length($ip) > 0) {
385 $result = $ip;
386 }
387 }
389 return $result;
390 }
393 #=== FUNCTION ================================================================
394 # NAME: get_local_mac_for_remote_ip
395 # PARAMETERS: none (takes server_ip from global variable)
396 # RETURNS: (ip address from interface that is used for communication)
397 # DESCRIPTION: Uses ioctl to get routing table from system, checks which entry
398 # matches (defaultroute last).
399 #===============================================================================
400 sub get_local_mac_for_remote_ip {
401 my $server_ip= shift;
402 my $result= "00:00:00:00:00:00";
404 if($server_ip =~ /^(\d\d?\d?\.){3}\d\d?\d?$/) {
405 my $PROC_NET_ROUTE= ('/proc/net/route');
407 open(PROC_NET_ROUTE, "<$PROC_NET_ROUTE")
408 or die "Could not open $PROC_NET_ROUTE";
410 my @ifs = <PROC_NET_ROUTE>;
412 close(PROC_NET_ROUTE);
414 # Eat header line
415 shift @ifs;
416 chomp @ifs;
417 foreach my $line(@ifs) {
418 my ($Iface,$Destination,$Gateway,$Flags,$RefCnt,$Use,$Metric,$Mask,$MTU,$Window,$IRTT)=split(/\s/, $line);
419 my $destination;
420 my $mask;
421 my ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Destination);
422 $destination= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
423 ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Mask);
424 $mask= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
425 if(new NetAddr::IP($server_ip)->within(new NetAddr::IP($destination, $mask))) {
426 # destination matches route, save mac and exit
427 $result= &get_mac($Iface);
428 last;
429 }
430 }
431 } else {
432 daemon_log("get_local_mac_for_remote_ip was called with a non-ip parameter: $server_ip", 1);
433 }
434 return $result;
435 }
437 sub get_local_ip_for_remote_ip {
438 my $server_ip= shift;
439 my $result="0.0.0.0";
441 if($server_ip =~ /^(\d\d?\d?\.){3}\d\d?\d?$/) {
442 if($server_ip eq "127.0.0.1") {
443 $result="127.0.0.1";
444 } else {
445 my $PROC_NET_ROUTE= ('/proc/net/route');
447 open(PROC_NET_ROUTE, "<$PROC_NET_ROUTE")
448 or die "Could not open $PROC_NET_ROUTE";
450 my @ifs = <PROC_NET_ROUTE>;
452 close(PROC_NET_ROUTE);
454 # Eat header line
455 shift @ifs;
456 chomp @ifs;
457 foreach my $line(@ifs) {
458 my ($Iface,$Destination,$Gateway,$Flags,$RefCnt,$Use,$Metric,$Mask,$MTU,$Window,$IRTT)=split(/\s/, $line);
459 my $destination;
460 my $mask;
461 my ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Destination);
462 $destination= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
463 ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Mask);
464 $mask= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
465 if(new NetAddr::IP($server_ip)->within(new NetAddr::IP($destination, $mask))) {
466 # destination matches route, save mac and exit
467 $result= &get_ip($Iface);
468 last;
469 }
470 }
471 }
472 } else {
473 daemon_log("get_local_ip_for_remote_ip was called with a non-ip parameter: $server_ip", 1);
474 }
475 return $result;
476 }
479 sub generate_hw_digest {
480 my $hw_data;
481 foreach my $line (split /\n/, `cat /proc/bus/pci/devices`) {
482 $hw_data.= sprintf "%s", $line =~ /[^\s]+\s([^\s]+)\s.*/;
483 }
484 return(md5_base64($hw_data));
485 }
488 sub create_passwd {
489 my $new_passwd = "";
490 for(my $i=0; $i<31; $i++) {
491 $new_passwd .= ("a".."z","A".."Z",0..9)[int(rand(62))]
492 }
494 return $new_passwd;
495 }
498 sub create_ciphering {
499 my ($passwd) = @_;
500 if((!defined($passwd)) || length($passwd)==0) {
501 $passwd = "";
502 }
503 $passwd = substr(md5_hex("$passwd") x 32, 0, 32);
504 my $iv = substr(md5_hex('GONICUS GmbH'),0, 16);
505 my $my_cipher = Crypt::Rijndael->new($passwd , Crypt::Rijndael::MODE_CBC());
506 $my_cipher->set_iv($iv);
507 return $my_cipher;
508 }
511 sub encrypt_msg {
512 my ($msg, $key) = @_;
513 my $my_cipher = &create_ciphering($key);
514 my $len;
515 {
516 use bytes;
517 $len= 16-length($msg)%16;
518 }
519 $msg = "\0"x($len).$msg;
520 $msg = $my_cipher->encrypt($msg);
521 chomp($msg = &encode_base64($msg));
522 # there are no newlines allowed inside msg
523 $msg=~ s/\n//g;
524 return $msg;
525 }
528 sub decrypt_msg {
530 my ($msg, $key) = @_ ;
531 $msg = &decode_base64($msg);
532 my $my_cipher = &create_ciphering($key);
533 $msg = $my_cipher->decrypt($msg);
534 $msg =~ s/\0*//g;
535 return $msg;
536 }
539 sub get_server_addresses {
540 my $domain= shift;
541 my @result;
543 my $error = 0;
544 my $res = Net::DNS::Resolver->new;
545 my $query = $res->send("_gosa-si._tcp.".$domain, "SRV");
546 my @hits;
548 if ($query) {
549 foreach my $rr ($query->answer) {
550 push(@hits, $rr->target.":".$rr->port);
551 }
552 }
553 else {
554 #warn "query failed: ", $res->errorstring, "\n";
555 $error++;
556 }
558 if( $error == 0 ) {
559 foreach my $hit (@hits) {
560 my ($hit_name, $hit_port) = split(/:/, $hit);
561 chomp($hit_name);
562 chomp($hit_port);
564 my $address_query = $res->send($hit_name);
565 if( 1 == length($address_query->answer) ) {
566 foreach my $rr ($address_query->answer) {
567 push(@result, $rr->address.":".$hit_port);
568 }
569 }
570 }
571 }
573 return @result;
574 }
577 #=== FUNCTION ================================================================
578 # NAME: send_msg_hash_to_target
579 # PARAMETERS: msg_hash - hash - xml_hash created with function create_xml_hash
580 # PeerAddr string - socket address to send msg
581 # PeerPort string - socket port, if not included in socket address
582 # RETURNS: nothing
583 # DESCRIPTION: ????
584 #===============================================================================
585 sub send_msg_hash_to_target {
586 my ($msg_hash, $address, $encrypt_key) = @_ ;
587 my $msg = &create_xml_string($msg_hash);
588 my $header = @{$msg_hash->{'header'}}[0];
589 my $error = &send_msg_to_target($msg, $address, $encrypt_key, $header);
591 return $error;
592 }
595 sub send_msg_to_target {
596 my ($msg, $address, $encrypt_key, $msg_header) = @_ ;
597 my $error = 0;
599 if( $msg_header ) {
600 $msg_header = "'$msg_header'-";
601 }
602 else {
603 $msg_header = "";
604 }
606 # encrypt xml msg
607 my $crypted_msg = &encrypt_msg($msg, $encrypt_key);
609 # opensocket
610 my $socket = &open_socket($address);
611 if( !$socket ) {
612 daemon_log("cannot send ".$msg_header."msg to $address , host not reachable", 1);
613 $error++;
614 }
616 if( $error == 0 ) {
617 # send xml msg
618 print $socket $crypted_msg."\n";
620 daemon_log("send ".$msg_header."msg to $address", 1);
621 daemon_log("message:\n$msg", 8);
623 }
625 # close socket in any case
626 if( $socket ) {
627 close $socket;
628 }
630 return $error;
631 }
634 sub write_to_file {
635 my ($string, $file) = @_;
636 my $error = 0;
638 if( not defined $file || not -f $file ) {
639 &main::daemon_log("ERROR: $prg: check '-f file' failed: $file", 1);
640 $error++;
641 }
642 if( not defined $string || 0 == length($string)) {
643 &main::daemon_log("ERROR: $prg: empty string to write to file '$file'", 1);
644 $error++;
645 }
647 if( $error == 0 ) {
649 chomp($string);
651 open(FILE, ">> $file");
652 print FILE $string."\n";
653 close(FILE);
654 }
656 return;
657 }
660 sub open_socket {
661 my ($PeerAddr, $PeerPort) = @_ ;
662 if(defined($PeerPort)){
663 $PeerAddr = $PeerAddr.":".$PeerPort;
664 }
665 my $socket;
666 $socket = new IO::Socket::INET(PeerAddr => $PeerAddr,
667 Porto => "tcp",
668 Type => SOCK_STREAM,
669 Timeout => 5,
670 );
671 if(not defined $socket) {
672 return;
673 }
674 &daemon_log("open_socket: $PeerAddr", 7);
675 return $socket;
676 }
679 #=== FUNCTION ================================================================
680 # NAME: register_at_server
681 # PARAMETERS:
682 # RETURNS:
683 # DESCRIPTION:
684 #===============================================================================
685 sub register_at_gosa_si_server {
686 my ($kernel) = $_[KERNEL];
687 my $try_to_register = 0;
689 if( not $REGISTERED ) {
690 # create new passwd and ciphering object for client-server communication
691 $server_key = &create_passwd();
693 my $events = join( ",", keys %{$event_hash} );
694 while(1) {
696 if( $try_to_register >= @servers ) {
697 last;
698 }
700 # fetch first gosa-si-server from @servers
701 my $server = shift(@servers);
703 # append shifted gosa-si-server at the end of @servers, so looking for servers never stop if
704 # a registration never occured
705 push( @servers, $server );
707 # Check if our ip is resolvable - if not: don't try to register
708 my $ip= &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
709 my $dnsname= gethostbyaddr(inet_aton($ip), AF_INET);
710 if(!defined($dnsname)) {
711 &write_to_file("goto-error-dns:$ip", $fai_logpath);
712 exit(1);
713 }
715 # create registration msg
716 my $local_ip = &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
717 my $local_mac = &get_local_mac_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
718 my $register_hash = &create_xml_hash("here_i_am", $local_ip.":".$client_port, $server);
719 &add_content2xml_hash($register_hash, "new_passwd", $server_key);
720 &add_content2xml_hash($register_hash, "mac_address", $local_mac);
721 &add_content2xml_hash($register_hash, "events", $events);
722 &add_content2xml_hash($register_hash, "gotoHardwareChecksum", $gotoHardwareChecksum);
724 # send xml hash to server with general server passwd
725 my $res = &send_msg_hash_to_target($register_hash, $server, $default_server_key);
726 if($res == 0) {
727 # reset try_to_register
728 $try_to_register = 0;
730 # Set fixed client address and mac address
731 $client_ip= &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
732 $client_address= "$client_ip:$client_port";
733 $client_mac_address = $local_mac;
734 $client_dnsname = $dnsname;
736 last;
737 } else {
738 $try_to_register++;
740 # wait 1 sec until trying to register again
741 sleep(1);
742 next;
743 }
744 }
746 if( $try_to_register >= @servers ) {
747 &write_to_file("gosa-si-no-server-available", $fai_logpath);
748 $kernel->delay_set('register_at_gosa_si_server', $delay_set_time);
749 }
750 else {
751 daemon_log("INFO: waiting for msg 'register_at_gosa_si_server'",5);
752 $kernel->delay_set('register_at_gosa_si_server', $delay_set_time);
753 # clear old settings and set it again
754 $kernel->delay_set('trigger_new_key', $server_key_lifetime);
755 }
756 }
757 return;
758 }
761 sub check_key_and_xml_validity {
762 my ($crypted_msg, $module_key) = @_;
764 my $msg;
765 my $msg_hash;
766 eval{
767 $msg = &decrypt_msg($crypted_msg, $module_key);
768 &main::daemon_log("decrypted_msg: \n$msg", 8);
770 $msg_hash = $xml->XMLin($msg, ForceArray=>1);
772 ##############
773 # check header
774 my $header_l = $msg_hash->{'header'};
775 if( 1 != @{$header_l} ) {
776 die 'no or more headers specified';
777 }
778 my $header = @{$header_l}[0];
779 if( 0 == length $header) {
780 die 'header has length 0';
781 }
783 ##############
784 # check source
785 my $source_l = $msg_hash->{'source'};
786 if( 1 != @{$source_l} ) {
787 die 'no or more than 1 sources specified';
788 }
789 my $source = @{$source_l}[0];
790 if( 0 == length $source) {
791 die 'source has length 0';
792 }
793 unless( $source =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ) {
794 die "source '$source' is neither a complete ip-address with port nor 'GOSA'";
795 }
797 ##############
798 # check target
799 my $target_l = $msg_hash->{'target'};
800 if( 1 != @{$target_l} ) {
801 die 'no or more than 1 targets specified ';
802 }
803 my $target = @{$target_l}[0];
804 if( 0 == length $target) {
805 die 'target has length 0 ';
806 }
807 unless( $target =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ){
808 die "source is neither a complete ip-address with port nor 'GOSA'";
809 }
810 };
811 if($@) {
812 &main::daemon_log("WARNING: do not understand the message or msg is not gosa-si envelope conform:", 5);
813 &main::daemon_log("$@", 8);
814 $msg = undef;
815 $msg_hash = undef;
816 }
818 return ($msg, $msg_hash);
819 }
822 sub check_outgoing_xml_validity {
823 my ($msg) = @_;
825 my $msg_hash;
826 eval{
827 $msg_hash = $xml->XMLin($msg, ForceArray=>1);
829 ##############
830 # check header
831 my $header_l = $msg_hash->{'header'};
832 if( 1 != @{$header_l} ) {
833 die 'no or more than one headers specified';
834 }
835 my $header = @{$header_l}[0];
836 if( 0 == length $header) {
837 die 'header has length 0';
838 }
840 ##############
841 # check source
842 my $source_l = $msg_hash->{'source'};
843 if( 1 != @{$source_l} ) {
844 die 'no or more than 1 sources specified';
845 }
846 my $source = @{$source_l}[0];
847 if( 0 == length $source) {
848 die 'source has length 0';
849 }
850 unless( $source =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ||
851 $source =~ /^GOSA$/i ) {
852 die "source '$source' is neither a complete ip-address with port";
853 }
855 ##############
856 # check target
857 my $target_l = $msg_hash->{'target'};
858 if( 1 != @{$target_l} ) {
859 die "no or more than one targets specified";
860 }
861 foreach my $target (@$target_l) {
862 if( 0 == length $target) {
863 die "target has length 0";
864 }
865 unless( $target =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ) {
866 die "target '$target' is not a complete ip-address with port or a valid target name";
867 }
868 }
869 };
870 if($@) {
871 daemon_log("WARNING: outgoing msg is not gosa-si envelope conform", 5);
872 daemon_log("$@ $msg", 8);
873 $msg_hash = undef;
874 }
875 return ($msg_hash);
876 }
879 sub import_events {
881 if (not -e $event_dir) {
882 daemon_log("ERROR: cannot find directory or directory is not readable: $event_dir", 1);
883 }
884 opendir (DIR, $event_dir) or die "ERROR while loading gosa-si-events from directory $event_dir : $!\n";
886 while (defined (my $event = readdir (DIR))) {
887 if( $event eq "." || $event eq ".." ) { next; }
889 eval{ require $event; };
890 if( $@ ) {
891 daemon_log("ERROR: import of event module '$event' failed", 1);
892 daemon_log("$@", 8);
893 next;
894 }
896 $event =~ /(\S*?).pm$/;
897 my $event_module = $1;
898 my $events_l = eval( $1."::get_events()") ;
899 foreach my $event_name (@{$events_l}) {
900 $event_hash->{$event_name} = $event_module;
901 }
903 }
905 my @all_events = keys %$event_hash;
906 my $all_events_string = join(", ", @all_events);
908 daemon_log("INFO: imported events: $all_events_string", 5);
909 }
911 sub trigger_new_key {
912 my ($kernel) = $_[KERNEL] ;
914 my $msg = "<xml><header>new_key</header><source>$client_address</source><target>$client_address</target></xml>";
915 &send_msg_to_target($msg, $client_address, $server_key, 'new_key');
917 $kernel->delay_set('trigger_new_key', $server_key_lifetime);
919 }
922 sub generic_file_reset {
923 my ( $heap, $wheel_id ) = @_[ HEAP, ARG0 ];
925 my $service = $heap->{services}->{$wheel_id};
926 daemon_log("INFO: '$service' watching reset", 5);
927 return;
928 }
930 sub generic_file_error {
931 my ( $heap, $operation, $errno, $error_string, $wheel_id ) =
932 @_[ HEAP, ARG0, ARG1, ARG2, ARG3 ];
934 my $service = $heap->{services}->{$wheel_id};
935 daemon_log("ERROR: '$service' watcher $operation error $errno: $error_string", 1);
936 daemon_log("ERROR: shutting down '$service' file watcher", 1);
938 delete $heap->{services}->{$wheel_id};
939 delete $heap->{watchers}->{$wheel_id};
940 return;
941 }
943 sub fifo_got_record {
944 my $file_record = $_[ARG0];
945 my $header;
946 my $content = "";
948 $file_record =~ /^(\S+)[ ]?([\s\S]+)?$/;
949 if( defined $1 ) {
950 $header = $1;
951 } else {
952 return;
953 }
955 if( defined $2 ) {
956 $content = $2;
957 }
959 my $clmsg_hash = &create_xml_hash("CLMSG_$header", $client_address, $server_address, $content);
960 &add_content2xml_hash($clmsg_hash, "macaddress", $client_mac_address);
961 my $clmsg = &create_xml_string($clmsg_hash);
962 &send_msg_to_target($clmsg, $server_address, $server_key);
963 return;
964 }
967 sub _start {
968 my ($kernel, $heap) = @_[KERNEL, HEAP];
969 $kernel->alias_set('client_session');
971 # force a registration at a gosa-si-server
972 $kernel->yield('register_at_gosa_si_server');
974 # install all file watcher defined
975 while( my($file_name, $file) = each %files_to_watch ) {
976 my $file_watcher = POE::Wheel::FollowTail->new(
977 Filename => $file,
978 InputEvent => $file_name."_record",
979 ResetEvent => "file_reset",
980 ErrorEvent => "file_error",
981 );
982 $heap->{services}->{ $file_watcher->ID } = $file_name;
983 $heap->{watchers}->{ $file_watcher->ID } = $file_watcher;
984 }
985 }
988 sub server_input {
989 my ($kernel, $heap, $input, $wheel) = @_[KERNEL, HEAP, ARG0, ARG1];
990 my $error = 0;
991 my $answer;
993 daemon_log("Incoming msg:\n$input\n", 8);
995 my ($msg, $msg_hash) = &check_key_and_xml_validity($input, $server_key);
996 if( (!$msg) || (!$msg_hash) ) {
997 daemon_log("Deciphering of incoming msg failed", 5);
998 $error++;
999 }
1002 ######################
1003 # process incoming msg
1004 if( $error == 0 ) {
1005 my $header = @{$msg_hash->{header}}[0];
1006 my $source = @{$msg_hash->{source}}[0];
1008 if( exists $event_hash->{$header} ) {
1009 # a event exists with the header as name
1010 daemon_log("found event '$header' at event-module '".$event_hash->{$header}."'", 5);
1011 no strict 'refs';
1012 $answer = &{$event_hash->{$header}."::$header"}($msg, $msg_hash);
1013 }
1014 else {
1015 daemon_log("WARNING: no event '$header' found in event modules under $event_dir", 1);
1016 }
1017 }
1019 ########
1020 # answer
1021 if( $answer ) {
1023 #check gosa-si envelope validity
1024 my $answer_hash = &check_outgoing_xml_validity($answer);
1026 if( $answer_hash ) {
1027 # answer is valid
1029 # preprocessing
1030 if( $answer =~ "<header>registered</header>") {
1031 # set registered flag to true to stop sending further registered msgs
1032 $REGISTERED = 1;
1033 }
1034 else {
1035 &send_msg_to_target($answer, $server_address, $server_key);
1036 }
1038 # postprocessing
1039 if( $answer =~ "<header>new_key</header>") {
1040 # set new key to global variable
1041 $answer =~ /<new_key>(\S*?)<\/new_key>/;
1042 my $new_key = $1;
1043 $server_key = $new_key;
1044 }
1045 }
1047 }
1049 return;
1050 }
1053 #==== MAIN = main ==============================================================
1054 # parse commandline options
1055 Getopt::Long::Configure( "bundling" );
1056 GetOptions("h|help" => \&usage,
1057 "c|config=s" => \$cfg_file,
1058 "f|foreground" => \$foreground,
1059 "v|verbose+" => \$verbose,
1060 );
1062 # read and set config parameters
1063 &check_cmdline_param ;
1064 &read_configfile($cfg_file, %cfg_defaults);
1065 &check_pid;
1068 # forward error messages to logfile
1069 if ( ! $foreground ) {
1070 open STDIN, '/dev/null' or die "Can’t read /dev/null: $!";
1071 open STDOUT, '>>/dev/null' or die "Can't write to /dev/null: $!";
1072 open STDERR, '>>/dev/null' or die "Can't write to /dev/null: $!";
1073 }
1075 # Just fork, if we are not in foreground mode
1076 if( ! $foreground ) {
1077 chdir '/' or die "Can't chdir to /: $!";
1078 $pid = fork;
1079 setsid or die "Can't start a new session: $!";
1080 umask 0;
1081 }
1082 else {
1083 $pid = $$;
1084 }
1086 # Do something useful - put our PID into the pid_file
1087 if( 0 != $pid ) {
1088 open( LOCK_FILE, ">$pid_file" );
1089 print LOCK_FILE "$pid\n";
1090 close( LOCK_FILE );
1091 if( !$foreground ) {
1092 exit( 0 )
1093 };
1094 }
1096 daemon_log(" ", 1);
1097 daemon_log("$prg started!", 1);
1099 # delete old DBsqlite lock files
1100 system('rm -f /tmp/gosa_si_lock*gosa-si-client*');
1102 # detect ip and mac address and complete host address
1103 $client_address = $client_ip.":".$client_port;
1104 my $network_interface= &get_interface_for_ip($client_ip);
1105 $client_mac_address= &get_mac($network_interface);
1106 daemon_log("gosa-si-client ip address detected: $client_ip", 1);
1107 daemon_log("gosa-si-client mac address detected: $client_mac_address", 1);
1110 # import events
1111 &import_events();
1114 # compute hardware checksum
1115 $gotoHardwareChecksum= &generate_hw_digest();
1116 daemon_log("gosa-si-client gotoHardwareChecksum detected: $gotoHardwareChecksum", 1);
1119 # create socket for incoming xml messages
1120 POE::Component::Server::TCP->new(
1121 Alias => 'gosa-si-client',
1122 Port => $client_port,
1123 ClientInput => \&server_input,
1124 );
1125 daemon_log("start socket for incoming xml messages at port '$client_port' ", 1);
1128 # prepare variables
1129 if( inet_aton($server_ip) ){ $server_ip = inet_ntoa(inet_aton($server_ip)); }
1130 ############################################################
1131 # to change
1132 if( $server_ip eq "127.0.1.1" ) { $server_ip = "127.0.0.1" }
1133 ############################################################
1134 if (defined $server_ip && defined $server_port) {
1135 $server_address = $server_ip.":".$server_port;
1136 }
1137 $xml = new XML::Simple();
1138 $default_server_key = $server_key;
1141 # add gosa-si-server address from config file at first position of server list
1142 my $server_check_cfg = Config::IniFiles->new( -file => $cfg_file );
1143 my $server_check = $server_check_cfg->val( "server", "ip");
1144 if( defined $server_check ) {
1145 unshift(@servers, $server_address);
1146 my $servers_string = join(", ", @servers);
1147 daemon_log("INFO: found servers in configuration file: $servers_string", 5);
1148 } else {
1149 my @tmp_servers;
1150 if ( !$server_domain) {
1151 # Try our DNS Searchlist
1152 for my $domain(get_dns_domains()) {
1153 chomp($domain);
1154 my @tmp_domains= &get_server_addresses($domain);
1155 if(@tmp_domains) {
1156 for my $tmp_server(@tmp_domains) {
1157 push @tmp_servers, $tmp_server;
1158 }
1159 }
1160 }
1161 if(@tmp_servers && length(@tmp_servers)==0) {
1162 daemon_log("ERROR: please specify a gosa-si-server address or a domain in config file", 1);
1163 kill 2, $$;
1164 }
1165 } else {
1166 @tmp_servers = &get_server_addresses($server_domain);
1167 if( 0 == @tmp_servers ) {
1168 daemon_log("ERROR: no gosa-si-server found in DNS for domain '$server_domain'",1);
1169 daemon_log("ERROR: please specify a gosa-si-server address or a domain in config file", 1);
1170 kill 2, $$;
1171 }
1172 }
1174 foreach my $server (@tmp_servers) {
1175 unshift(@servers, $server);
1176 }
1177 my $servers_string = join(", ", @servers);
1178 daemon_log("INFO: found servers in DNS: $servers_string", 5);
1179 }
1182 # open fifo for non-gosa-si-client-msgs to gosa-si-server
1183 POSIX::mkfifo("$gosa_si_client_fifo", "0600");
1186 POE::Session->create(
1187 inline_states => {
1188 _start => \&_start,
1189 register_at_gosa_si_server => \®ister_at_gosa_si_server,
1190 trigger_new_key => \&trigger_new_key,
1192 # handle records from each defined file differently
1193 fifo_record => \&fifo_got_record,
1195 # handle file resets and errors the same way for each file
1196 file_reset => \&generic_file_reset,
1197 file_error => \&generic_file_error,
1198 }
1199 );
1201 POE::Kernel->run();
1202 exit;