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 $client_force_hostname;
65 our $server_key;
67 # default variables
68 our $REGISTERED = 0;
70 # path to fifo for non-gosa-si-client messages to gosa-si-server
71 $gosa_si_client_fifo = "/var/run/gosa-si-client.socket";
72 %files_to_watch = (fifo => $gosa_si_client_fifo);
74 # in function register_at_gosa_si_server, after which period of seconds a new registration should be tried if a registration was
75 # not successful until now
76 my $delay_set_time = 5;
77 our $prg= basename($0);
79 %cfg_defaults = (
80 "general" =>
81 {"log-file" => [\$log_file, "/var/run/".$prg.".log"],
82 "pid-file" => [\$pid_file, "/var/run/".$prg.".pid"],
83 "opts-file" => [\$opts_file, "/var/run/".$prg.".opts"],
84 },
85 "client" =>
86 {"port" => [\$client_port, "20083"],
87 "ip" => [\$client_ip, "0.0.0.0"],
88 "mac-address" => [\$client_mac_address, "00:00:00:00:00:00"],
89 "server-domain" => [\$server_domain, ""],
90 "ldap" => [\$ldap_enabled, 1],
91 "ldap-config" => [\$ldap_config, "/etc/ldap/ldap.conf"],
92 "pam-config" => [\$pam_config, "/etc/pam_ldap.conf"],
93 "nss-config" => [\$nss_config, "/etc/libnss_ldap.conf"],
94 "fai-logpath" => [\$fai_logpath, "/var/log/fai/fai.log"],
95 "force-hostname" => [\$client_force_hostname, "false"],
96 },
97 "server" => {
98 "ip" => [\$server_ip, "127.0.0.1"],
99 "port" => [\$server_port, "20081"],
100 "key" => [\$server_key, ""],
101 "timeout" => [\$server_timeout, 10],
102 "key-lifetime" => [\$server_key_lifetime, 600],
103 },
105 );
108 #=== FUNCTIONS = functions =====================================================
110 #=== FUNCTION ================================================================
111 # NAME: check_cmdline_param
112 # PARAMETERS:
113 # RETURNS:
114 # DESCRIPTION:
115 #===============================================================================
116 sub check_cmdline_param () {
117 my $err_config;
118 my $err_counter = 0;
119 if(not defined($cfg_file)) {
120 $cfg_file = "/etc/gosa-si/client.conf";
121 if(! -r $cfg_file) {
122 $err_config = "please specify a config file";
123 $err_counter += 1;
124 }
125 }
126 if( $err_counter > 0 ) {
127 &usage( "", 1 );
128 if( defined( $err_config)) { print STDERR "$err_config\n"}
129 print STDERR "\n";
130 exit( -1 );
131 }
132 }
135 #=== FUNCTION ================================================================
136 # NAME: read_configfile
137 # PARAMETERS: cfg_file - string -
138 # RETURNS:
139 # DESCRIPTION:
140 #===============================================================================
141 sub read_configfile {
142 my ($cfg_file, %cfg_defaults) = @_ ;
143 my $cfg;
144 if( defined( $cfg_file) && ( length($cfg_file) > 0 )) {
145 if( -r $cfg_file ) {
146 $cfg = Config::IniFiles->new( -file => $cfg_file );
147 } else {
148 print STDERR "Couldn't read config file!";
149 }
150 } else {
151 $cfg = Config::IniFiles->new() ;
152 }
153 foreach my $section (keys %cfg_defaults) {
154 foreach my $param (keys %{$cfg_defaults{ $section }}) {
155 my $pinfo = $cfg_defaults{ $section }{ $param };
156 ${@$pinfo[ 0 ]} = $cfg->val( $section, $param, @$pinfo[ 1 ] );
157 }
158 }
159 }
162 #=== FUNCTION ================================================================
163 # NAME: check_pid
164 # PARAMETERS:
165 # RETURNS:
166 # DESCRIPTION:
167 #===============================================================================
168 sub check_pid {
169 $pid = -1;
170 # Check, if we are already running
171 if( open(LOCK_FILE, "<$pid_file") ) {
172 $pid = <LOCK_FILE>;
173 if( defined $pid ) {
174 chomp( $pid );
175 if( -f "/proc/$pid/stat" ) {
176 my($stat) = `cat /proc/$pid/stat` =~ m/$pid \((.+)\).*/;
177 if( $0 eq $stat ) {
178 close( LOCK_FILE );
179 exit -1;
180 }
181 }
182 }
183 close( LOCK_FILE );
184 unlink( $pid_file );
185 }
187 # create a syslog msg if it is not to possible to open PID file
188 if (not sysopen(LOCK_FILE, $pid_file, O_WRONLY|O_CREAT|O_EXCL, 0644)) {
189 my($msg) = "Couldn't obtain lockfile '$pid_file' ";
190 if (open(LOCK_FILE, '<', $pid_file)
191 && ($pid = <LOCK_FILE>))
192 {
193 chomp($pid);
194 $msg .= "(PID $pid)\n";
195 } else {
196 $msg .= "(unable to read PID)\n";
197 }
198 if( ! ($foreground) ) {
199 openlog( $0, "cons,pid", "daemon" );
200 syslog( "warning", $msg );
201 closelog();
202 }
203 else {
204 print( STDERR " $msg " );
205 }
206 exit( -1 );
207 }
208 }
211 sub sig_int_handler {
212 my ($signal) = @_;
214 daemon_log("shutting down gosa-si-server", 1);
215 exit(1);
216 }
217 $SIG{INT} = \&sig_int_handler;
220 #=== FUNCTION ================================================================
221 # NAME: logging
222 # PARAMETERS: level - string - default 'info'
223 # msg - string -
224 # facility - string - default 'LOG_DAEMON'
225 # RETURNS:
226 # DESCRIPTION:
227 #===============================================================================
228 sub daemon_log {
229 # log into log_file
230 my( $msg, $level ) = @_;
231 if(not defined $msg) { return }
232 if(not defined $level) { $level = 1 }
233 if(defined $log_file){
234 open(LOG_HANDLE, ">>$log_file");
235 if(not defined open( LOG_HANDLE, ">>$log_file" )) {
236 print STDERR "cannot open $log_file: $!";
237 return }
238 chomp($msg);
239 if($level <= $verbose){
240 my ($seconds, $minutes, $hours, $monthday, $month,
241 $year, $weekday, $yearday, $sommertime) = localtime(time);
242 $hours = $hours < 10 ? $hours = "0".$hours : $hours;
243 $minutes = $minutes < 10 ? $minutes = "0".$minutes : $minutes;
244 $seconds = $seconds < 10 ? $seconds = "0".$seconds : $seconds;
245 my @monthnames = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
246 $month = $monthnames[$month];
247 $monthday = $monthday < 10 ? $monthday = "0".$monthday : $monthday;
248 $year+=1900;
250 my $log_msg = "$month $monthday $hours:$minutes:$seconds $prg $msg\n";
251 print LOG_HANDLE $log_msg;
252 if( $foreground ) {
253 print STDERR $log_msg;
254 }
255 }
256 close( LOG_HANDLE );
257 }
258 }
261 #=== FUNCTION ================================================================
262 # NAME: get_interfaces
263 # PARAMETERS: none
264 # RETURNS: (list of interfaces)
265 # DESCRIPTION: Uses proc fs (/proc/net/dev) to get list of interfaces.
266 #===============================================================================
267 sub get_interfaces {
268 my @result;
269 my $PROC_NET_DEV= ('/proc/net/dev');
271 open(PROC_NET_DEV, "<$PROC_NET_DEV")
272 or die "Could not open $PROC_NET_DEV";
274 my @ifs = <PROC_NET_DEV>;
276 close(PROC_NET_DEV);
278 # Eat first two line
279 shift @ifs;
280 shift @ifs;
282 chomp @ifs;
283 foreach my $line(@ifs) {
284 my $if= (split /:/, $line)[0];
285 $if =~ s/^\s+//;
286 push @result, $if;
287 }
289 return @result;
290 }
292 #=== FUNCTION ================================================================
293 # NAME: get_mac
294 # PARAMETERS: interface name (i.e. eth0)
295 # RETURNS: (mac address)
296 # DESCRIPTION: Uses ioctl to get mac address directly from system.
297 #===============================================================================
298 sub get_mac {
299 my $ifreq= shift;
300 my $result;
301 if ($ifreq && length($ifreq) > 0) {
302 if($ifreq eq "all") {
303 if(defined($server_ip)) {
304 $result = &get_local_mac_for_remote_ip($server_ip);
305 }
306 elsif ($client_mac_address && length($client_mac_address) > 0 && !($client_mac_address eq "00:00:00:00:00:00")){
307 $result = &client_mac_address;
308 }
309 else {
310 $result = "00:00:00:00:00:00";
311 }
312 } else {
313 my $SIOCGIFHWADDR= 0x8927; # man 2 ioctl_list
315 # A configured MAC Address should always override a guessed value
316 if ($client_mac_address and length($client_mac_address) > 0 and not($client_mac_address eq "00:00:00:00:00:00")) {
317 $result= $client_mac_address;
318 }
319 else {
320 socket SOCKET, PF_INET, SOCK_DGRAM, getprotobyname('ip')
321 or die "socket: $!";
323 if(ioctl SOCKET, $SIOCGIFHWADDR, $ifreq) {
324 my ($if, $mac)= unpack 'h36 H12', $ifreq;
326 if (length($mac) > 0) {
327 $mac=~ m/^([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])$/;
328 $mac= sprintf("%s:%s:%s:%s:%s:%s", $1, $2, $3, $4, $5, $6);
329 $result = $mac;
330 }
331 }
332 }
333 }
334 }
335 return $result;
336 }
339 #=== FUNCTION ================================================================
340 # NAME: get_interface_for_ip
341 # PARAMETERS: ip address (i.e. 192.168.0.1)
342 # RETURNS: array: list of interfaces if ip=0.0.0.0, matching interface if found, undef else
343 # DESCRIPTION: Uses proc fs (/proc/net/dev) to get list of interfaces.
344 #===============================================================================
345 sub get_interface_for_ip {
346 my $result;
347 my $ip= shift;
348 if ($ip && length($ip) > 0) {
349 my @ifs= &get_interfaces();
350 if($ip eq "0.0.0.0") {
351 $result = "all";
352 } else {
353 foreach (@ifs) {
354 my $if=$_;
355 if(get_ip($if) eq $ip) {
356 $result = $if;
357 last;
358 }
359 }
360 }
361 }
362 return $result;
363 }
366 #=== FUNCTION ================================================================
367 # NAME: get_ip
368 # PARAMETERS: interface name (i.e. eth0)
369 # RETURNS: (ip address)
370 # DESCRIPTION: Uses ioctl to get ip address directly from system.
371 #===============================================================================
372 sub get_ip {
373 my $ifreq= shift;
374 my $result= "";
375 my $SIOCGIFADDR= 0x8915; # man 2 ioctl_list
376 my $proto= getprotobyname('ip');
378 socket SOCKET, PF_INET, SOCK_DGRAM, $proto
379 or die "socket: $!";
381 if(ioctl SOCKET, $SIOCGIFADDR, $ifreq) {
382 my ($if, $sin) = unpack 'a16 a16', $ifreq;
383 my ($port, $addr) = sockaddr_in $sin;
384 my $ip = inet_ntoa $addr;
386 if ($ip && length($ip) > 0) {
387 $result = $ip;
388 }
389 }
391 return $result;
392 }
395 #=== FUNCTION ================================================================
396 # NAME: get_local_mac_for_remote_ip
397 # PARAMETERS: none (takes server_ip from global variable)
398 # RETURNS: (ip address from interface that is used for communication)
399 # DESCRIPTION: Uses ioctl to get routing table from system, checks which entry
400 # matches (defaultroute last).
401 #===============================================================================
402 sub get_local_mac_for_remote_ip {
403 my $server_ip= shift;
404 my $result= "00:00:00:00:00:00";
406 if($server_ip =~ /^(\d\d?\d?\.){3}\d\d?\d?$/) {
407 my $PROC_NET_ROUTE= ('/proc/net/route');
409 open(PROC_NET_ROUTE, "<$PROC_NET_ROUTE")
410 or die "Could not open $PROC_NET_ROUTE";
412 my @ifs = <PROC_NET_ROUTE>;
414 close(PROC_NET_ROUTE);
416 # Eat header line
417 shift @ifs;
418 chomp @ifs;
419 foreach my $line(@ifs) {
420 my ($Iface,$Destination,$Gateway,$Flags,$RefCnt,$Use,$Metric,$Mask,$MTU,$Window,$IRTT)=split(/\s/, $line);
421 my $destination;
422 my $mask;
423 my ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Destination);
424 $destination= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
425 ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Mask);
426 $mask= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
427 if(new NetAddr::IP($server_ip)->within(new NetAddr::IP($destination, $mask))) {
428 # destination matches route, save mac and exit
429 $result= &get_mac($Iface);
430 last;
431 }
432 }
433 } else {
434 daemon_log("get_local_mac_for_remote_ip was called with a non-ip parameter: $server_ip", 1);
435 }
436 return $result;
437 }
439 sub get_local_ip_for_remote_ip {
440 my $server_ip= shift;
441 my $result="0.0.0.0";
443 if($server_ip =~ /^(\d\d?\d?\.){3}\d\d?\d?$/) {
444 if($server_ip eq "127.0.0.1") {
445 $result="127.0.0.1";
446 } else {
447 my $PROC_NET_ROUTE= ('/proc/net/route');
449 open(PROC_NET_ROUTE, "<$PROC_NET_ROUTE")
450 or die "Could not open $PROC_NET_ROUTE";
452 my @ifs = <PROC_NET_ROUTE>;
454 close(PROC_NET_ROUTE);
456 # Eat header line
457 shift @ifs;
458 chomp @ifs;
459 foreach my $line(@ifs) {
460 my ($Iface,$Destination,$Gateway,$Flags,$RefCnt,$Use,$Metric,$Mask,$MTU,$Window,$IRTT)=split(/\s/, $line);
461 my $destination;
462 my $mask;
463 my ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Destination);
464 $destination= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
465 ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Mask);
466 $mask= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
467 if(new NetAddr::IP($server_ip)->within(new NetAddr::IP($destination, $mask))) {
468 # destination matches route, save mac and exit
469 $result= &get_ip($Iface);
470 last;
471 }
472 }
473 }
474 } else {
475 daemon_log("get_local_ip_for_remote_ip was called with a non-ip parameter: $server_ip", 1);
476 }
477 return $result;
478 }
481 sub generate_hw_digest {
482 my $hw_data;
483 foreach my $line (split /\n/, `cat /proc/bus/pci/devices`) {
484 $hw_data.= sprintf "%s", $line =~ /[^\s]+\s([^\s]+)\s.*/;
485 }
486 return(md5_base64($hw_data));
487 }
490 sub create_passwd {
491 my $new_passwd = "";
492 for(my $i=0; $i<31; $i++) {
493 $new_passwd .= ("a".."z","A".."Z",0..9)[int(rand(62))]
494 }
496 return $new_passwd;
497 }
500 sub create_ciphering {
501 my ($passwd) = @_;
502 if((!defined($passwd)) || length($passwd)==0) {
503 $passwd = "";
504 }
505 $passwd = substr(md5_hex("$passwd") x 32, 0, 32);
506 my $iv = substr(md5_hex('GONICUS GmbH'),0, 16);
507 my $my_cipher = Crypt::Rijndael->new($passwd , Crypt::Rijndael::MODE_CBC());
508 $my_cipher->set_iv($iv);
509 return $my_cipher;
510 }
513 sub encrypt_msg {
514 my ($msg, $key) = @_;
515 my $my_cipher = &create_ciphering($key);
516 my $len;
517 {
518 use bytes;
519 $len= 16-length($msg)%16;
520 }
521 $msg = "\0"x($len).$msg;
522 $msg = $my_cipher->encrypt($msg);
523 chomp($msg = &encode_base64($msg));
524 # there are no newlines allowed inside msg
525 $msg=~ s/\n//g;
526 return $msg;
527 }
530 sub decrypt_msg {
532 my ($msg, $key) = @_ ;
533 $msg = &decode_base64($msg);
534 my $my_cipher = &create_ciphering($key);
535 $msg = $my_cipher->decrypt($msg);
536 $msg =~ s/\0*//g;
537 return $msg;
538 }
541 sub get_server_addresses {
542 my $domain= shift;
543 my @result;
545 my $error = 0;
546 my $res = Net::DNS::Resolver->new;
547 my $query = $res->send("_gosa-si._tcp.".$domain, "SRV");
548 my @hits;
550 if ($query) {
551 foreach my $rr ($query->answer) {
552 push(@hits, $rr->target.":".$rr->port);
553 }
554 }
555 else {
556 #warn "query failed: ", $res->errorstring, "\n";
557 $error++;
558 }
560 if( $error == 0 ) {
561 foreach my $hit (@hits) {
562 my ($hit_name, $hit_port) = split(/:/, $hit);
563 chomp($hit_name);
564 chomp($hit_port);
566 my $address_query = $res->send($hit_name);
567 if( 1 == length($address_query->answer) ) {
568 foreach my $rr ($address_query->answer) {
569 push(@result, $rr->address.":".$hit_port);
570 }
571 }
572 }
573 }
575 return @result;
576 }
579 #=== FUNCTION ================================================================
580 # NAME: send_msg_hash_to_target
581 # PARAMETERS: msg_hash - hash - xml_hash created with function create_xml_hash
582 # PeerAddr string - socket address to send msg
583 # PeerPort string - socket port, if not included in socket address
584 # RETURNS: nothing
585 # DESCRIPTION: ????
586 #===============================================================================
587 sub send_msg_hash_to_target {
588 my ($msg_hash, $address, $encrypt_key) = @_ ;
589 my $msg = &create_xml_string($msg_hash);
590 my $header = @{$msg_hash->{'header'}}[0];
591 my $error = &send_msg_to_target($msg, $address, $encrypt_key, $header);
593 return $error;
594 }
597 sub send_msg_to_target {
598 my ($msg, $address, $encrypt_key, $msg_header) = @_ ;
599 my $error = 0;
601 if( $msg_header ) {
602 $msg_header = "'$msg_header'-";
603 }
604 else {
605 $msg_header = "";
606 }
608 # encrypt xml msg
609 my $crypted_msg = &encrypt_msg($msg, $encrypt_key);
611 # opensocket
612 my $socket = &open_socket($address);
613 if( !$socket ) {
614 daemon_log("cannot send ".$msg_header."msg to $address , host not reachable", 1);
615 $error++;
616 }
618 if( $error == 0 ) {
619 # send xml msg
620 print $socket $crypted_msg."\n";
622 daemon_log("send ".$msg_header."msg to $address", 1);
623 daemon_log("message:\n$msg", 8);
625 }
627 # close socket in any case
628 if( $socket ) {
629 close $socket;
630 }
632 return $error;
633 }
636 sub write_to_file {
637 my ($string, $file) = @_;
638 my $error = 0;
640 if( not defined $file || not -f $file ) {
641 &main::daemon_log("ERROR: $prg: check '-f file' failed: $file", 1);
642 $error++;
643 }
644 if( not defined $string || 0 == length($string)) {
645 &main::daemon_log("ERROR: $prg: empty string to write to file '$file'", 1);
646 $error++;
647 }
649 if( $error == 0 ) {
651 chomp($string);
653 open(FILE, ">> $file");
654 print FILE $string."\n";
655 close(FILE);
656 }
658 return;
659 }
662 sub open_socket {
663 my ($PeerAddr, $PeerPort) = @_ ;
664 if(defined($PeerPort)){
665 $PeerAddr = $PeerAddr.":".$PeerPort;
666 }
667 my $socket;
668 $socket = new IO::Socket::INET(PeerAddr => $PeerAddr,
669 Porto => "tcp",
670 Type => SOCK_STREAM,
671 Timeout => 5,
672 );
673 if(not defined $socket) {
674 return;
675 }
676 &daemon_log("open_socket: $PeerAddr", 7);
677 return $socket;
678 }
681 #=== FUNCTION ================================================================
682 # NAME: register_at_server
683 # PARAMETERS:
684 # RETURNS:
685 # DESCRIPTION:
686 #===============================================================================
687 sub register_at_gosa_si_server {
688 my ($kernel) = $_[KERNEL];
689 my $try_to_register = 0;
691 if( not $REGISTERED ) {
692 # create new passwd and ciphering object for client-server communication
693 $server_key = &create_passwd();
695 my $events = join( ",", keys %{$event_hash} );
696 while(1) {
698 if( $try_to_register >= @servers ) {
699 last;
700 }
702 # fetch first gosa-si-server from @servers
703 my $server = shift(@servers);
705 # append shifted gosa-si-server at the end of @servers, so looking for servers never stop if
706 # a registration never occured
707 push( @servers, $server );
709 # Check if our ip is resolvable - if not: don't try to register
710 my $ip= &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
711 my $dnsname= gethostbyaddr(inet_aton($ip), AF_INET);
712 if(!defined($dnsname)) {
713 &write_to_file("goto-error-dns:$ip", $fai_logpath);
714 exit(1);
715 }
717 # create registration msg
718 my $local_ip = &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
719 my $local_mac = &get_local_mac_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
720 my $register_hash = &create_xml_hash("here_i_am", $local_ip.":".$client_port, $server);
721 &add_content2xml_hash($register_hash, "new_passwd", $server_key);
722 &add_content2xml_hash($register_hash, "mac_address", $local_mac);
723 &add_content2xml_hash($register_hash, "events", $events);
724 &add_content2xml_hash($register_hash, "gotoHardwareChecksum", $gotoHardwareChecksum);
726 # Add $HOSTNAME from ENV if force-hostname is set
727 if( defined($client_force_hostname) &&
728 $client_force_hostname eq "true") {
729 if(defined($ENV{HOSTNAME}) &&
730 length($ENV{HOSTNAME}) >0 ) {
731 &add_content2xml_hash($register_hash, "force-hostname", $ENV{HOSTNAME});
732 } else {
733 &main::daemon_log("force-hostname was set to true, but no \$HOSTNAME was found in Environment!",0);
734 }
735 }
737 # send xml hash to server with general server passwd
738 my $res = &send_msg_hash_to_target($register_hash, $server, $default_server_key);
739 if($res == 0) {
740 # reset try_to_register
741 $try_to_register = 0;
743 # Set fixed client address and mac address
744 $client_ip= &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
745 $client_address= "$client_ip:$client_port";
746 $client_mac_address = $local_mac;
747 $client_dnsname = $dnsname;
749 last;
750 } else {
751 $try_to_register++;
753 # wait 1 sec until trying to register again
754 sleep(1);
755 next;
756 }
757 }
759 if( $try_to_register >= @servers ) {
760 &write_to_file("gosa-si-no-server-available", $fai_logpath);
761 $kernel->delay_set('register_at_gosa_si_server', $delay_set_time);
762 }
763 else {
764 daemon_log("INFO: waiting for msg 'register_at_gosa_si_server'",5);
765 $kernel->delay_set('register_at_gosa_si_server', $delay_set_time);
766 # clear old settings and set it again
767 $kernel->delay_set('trigger_new_key', $server_key_lifetime);
768 }
769 }
770 return;
771 }
774 sub check_key_and_xml_validity {
775 my ($crypted_msg, $module_key) = @_;
777 my $msg;
778 my $msg_hash;
779 eval{
780 $msg = &decrypt_msg($crypted_msg, $module_key);
781 &main::daemon_log("decrypted_msg: \n$msg", 8);
783 $msg_hash = $xml->XMLin($msg, ForceArray=>1);
785 ##############
786 # check header
787 my $header_l = $msg_hash->{'header'};
788 if( 1 != @{$header_l} ) {
789 die 'no or more headers specified';
790 }
791 my $header = @{$header_l}[0];
792 if( 0 == length $header) {
793 die 'header has length 0';
794 }
796 ##############
797 # check source
798 my $source_l = $msg_hash->{'source'};
799 if( 1 != @{$source_l} ) {
800 die 'no or more than 1 sources specified';
801 }
802 my $source = @{$source_l}[0];
803 if( 0 == length $source) {
804 die 'source has length 0';
805 }
806 unless( $source =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ) {
807 die "source '$source' is neither a complete ip-address with port nor 'GOSA'";
808 }
810 ##############
811 # check target
812 my $target_l = $msg_hash->{'target'};
813 if( 1 != @{$target_l} ) {
814 die 'no or more than 1 targets specified ';
815 }
816 my $target = @{$target_l}[0];
817 if( 0 == length $target) {
818 die 'target has length 0 ';
819 }
820 unless( $target =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ){
821 die "source is neither a complete ip-address with port nor 'GOSA'";
822 }
823 };
824 if($@) {
825 &main::daemon_log("WARNING: do not understand the message or msg is not gosa-si envelope conform:", 5);
826 &main::daemon_log("$@", 8);
827 $msg = undef;
828 $msg_hash = undef;
829 }
831 return ($msg, $msg_hash);
832 }
835 sub check_outgoing_xml_validity {
836 my ($msg) = @_;
838 my $msg_hash;
839 eval{
840 $msg_hash = $xml->XMLin($msg, ForceArray=>1);
842 ##############
843 # check header
844 my $header_l = $msg_hash->{'header'};
845 if( 1 != @{$header_l} ) {
846 die 'no or more than one headers specified';
847 }
848 my $header = @{$header_l}[0];
849 if( 0 == length $header) {
850 die 'header has length 0';
851 }
853 ##############
854 # check source
855 my $source_l = $msg_hash->{'source'};
856 if( 1 != @{$source_l} ) {
857 die 'no or more than 1 sources specified';
858 }
859 my $source = @{$source_l}[0];
860 if( 0 == length $source) {
861 die 'source has length 0';
862 }
863 unless( $source =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ||
864 $source =~ /^GOSA$/i ) {
865 die "source '$source' is neither a complete ip-address with port";
866 }
868 ##############
869 # check target
870 my $target_l = $msg_hash->{'target'};
871 if( 1 != @{$target_l} ) {
872 die "no or more than one targets specified";
873 }
874 foreach my $target (@$target_l) {
875 if( 0 == length $target) {
876 die "target has length 0";
877 }
878 unless( $target =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ) {
879 die "target '$target' is not a complete ip-address with port or a valid target name";
880 }
881 }
882 };
883 if($@) {
884 daemon_log("WARNING: outgoing msg is not gosa-si envelope conform", 5);
885 daemon_log("$@ $msg", 8);
886 $msg_hash = undef;
887 }
888 return ($msg_hash);
889 }
892 sub import_events {
894 if (not -e $event_dir) {
895 daemon_log("ERROR: cannot find directory or directory is not readable: $event_dir", 1);
896 }
897 opendir (DIR, $event_dir) or die "ERROR while loading gosa-si-events from directory $event_dir : $!\n";
899 while (defined (my $event = readdir (DIR))) {
900 if( $event eq "." || $event eq ".." ) { next; }
902 eval{ require $event; };
903 if( $@ ) {
904 daemon_log("ERROR: import of event module '$event' failed", 1);
905 daemon_log("$@", 8);
906 next;
907 }
909 $event =~ /(\S*?).pm$/;
910 my $event_module = $1;
911 my $events_l = eval( $1."::get_events()") ;
912 foreach my $event_name (@{$events_l}) {
913 $event_hash->{$event_name} = $event_module;
914 }
916 }
918 my @all_events = keys %$event_hash;
919 my $all_events_string = join(", ", @all_events);
921 daemon_log("INFO: imported events: $all_events_string", 5);
922 }
924 sub trigger_new_key {
925 my ($kernel) = $_[KERNEL] ;
927 my $msg = "<xml><header>new_key</header><source>$client_address</source><target>$client_address</target></xml>";
928 &send_msg_to_target($msg, $client_address, $server_key, 'new_key');
930 $kernel->delay_set('trigger_new_key', $server_key_lifetime);
932 }
935 sub generic_file_reset {
936 my ( $heap, $wheel_id ) = @_[ HEAP, ARG0 ];
938 my $service = $heap->{services}->{$wheel_id};
939 daemon_log("INFO: '$service' watching reset", 5);
940 return;
941 }
943 sub generic_file_error {
944 my ( $heap, $operation, $errno, $error_string, $wheel_id ) =
945 @_[ HEAP, ARG0, ARG1, ARG2, ARG3 ];
947 my $service = $heap->{services}->{$wheel_id};
948 daemon_log("ERROR: '$service' watcher $operation error $errno: $error_string", 1);
949 daemon_log("ERROR: shutting down '$service' file watcher", 1);
951 delete $heap->{services}->{$wheel_id};
952 delete $heap->{watchers}->{$wheel_id};
953 return;
954 }
956 sub fifo_got_record {
957 my $file_record = $_[ARG0];
958 my $header;
959 my $content = "";
961 $file_record =~ /^(\S+)[ ]?([\s\S]+)?$/;
962 if( defined $1 ) {
963 $header = $1;
964 } else {
965 return;
966 }
968 if( defined $2 ) {
969 $content = $2;
970 }
972 my $clmsg_hash = &create_xml_hash("CLMSG_$header", $client_address, $server_address, $content);
973 &add_content2xml_hash($clmsg_hash, "macaddress", $client_mac_address);
974 my $clmsg = &create_xml_string($clmsg_hash);
975 &send_msg_to_target($clmsg, $server_address, $server_key);
976 return;
977 }
980 sub _start {
981 my ($kernel, $heap) = @_[KERNEL, HEAP];
982 $kernel->alias_set('client_session');
984 # force a registration at a gosa-si-server
985 $kernel->yield('register_at_gosa_si_server');
987 # install all file watcher defined
988 while( my($file_name, $file) = each %files_to_watch ) {
989 my $file_watcher = POE::Wheel::FollowTail->new(
990 Filename => $file,
991 InputEvent => $file_name."_record",
992 ResetEvent => "file_reset",
993 ErrorEvent => "file_error",
994 );
995 $heap->{services}->{ $file_watcher->ID } = $file_name;
996 $heap->{watchers}->{ $file_watcher->ID } = $file_watcher;
997 }
998 }
1001 sub server_input {
1002 my ($kernel, $heap, $input, $wheel) = @_[KERNEL, HEAP, ARG0, ARG1];
1003 my $error = 0;
1004 my $answer;
1006 daemon_log("Incoming msg:\n$input\n", 8);
1008 my ($msg, $msg_hash) = &check_key_and_xml_validity($input, $server_key);
1009 if( (!$msg) || (!$msg_hash) ) {
1010 daemon_log("Deciphering of incoming msg failed", 5);
1011 $error++;
1012 }
1015 ######################
1016 # process incoming msg
1017 if( $error == 0 ) {
1018 my $header = @{$msg_hash->{header}}[0];
1019 my $source = @{$msg_hash->{source}}[0];
1021 if( exists $event_hash->{$header} ) {
1022 # a event exists with the header as name
1023 daemon_log("found event '$header' at event-module '".$event_hash->{$header}."'", 5);
1024 no strict 'refs';
1025 $answer = &{$event_hash->{$header}."::$header"}($msg, $msg_hash);
1026 }
1027 else {
1028 daemon_log("WARNING: no event '$header' found in event modules under $event_dir", 1);
1029 }
1030 }
1032 ########
1033 # answer
1034 if( $answer ) {
1036 #check gosa-si envelope validity
1037 my $answer_hash = &check_outgoing_xml_validity($answer);
1039 if( $answer_hash ) {
1040 # answer is valid
1042 # preprocessing
1043 if( $answer =~ "<header>registered</header>") {
1044 # set registered flag to true to stop sending further registered msgs
1045 $REGISTERED = 1;
1046 }
1047 else {
1048 &send_msg_to_target($answer, $server_address, $server_key);
1049 }
1051 # postprocessing
1052 if( $answer =~ "<header>new_key</header>") {
1053 # set new key to global variable
1054 $answer =~ /<new_key>(\S*?)<\/new_key>/;
1055 my $new_key = $1;
1056 $server_key = $new_key;
1057 }
1058 }
1060 }
1062 return;
1063 }
1066 #==== MAIN = main ==============================================================
1067 # parse commandline options
1068 Getopt::Long::Configure( "bundling" );
1069 GetOptions("h|help" => \&usage,
1070 "c|config=s" => \$cfg_file,
1071 "f|foreground" => \$foreground,
1072 "v|verbose+" => \$verbose,
1073 );
1075 # read and set config parameters
1076 &check_cmdline_param ;
1077 &read_configfile($cfg_file, %cfg_defaults);
1078 &check_pid;
1081 # forward error messages to logfile
1082 if ( ! $foreground ) {
1083 open STDIN, '/dev/null' or die "Can’t read /dev/null: $!";
1084 open STDOUT, '>>/dev/null' or die "Can't write to /dev/null: $!";
1085 open STDERR, '>>/dev/null' or die "Can't write to /dev/null: $!";
1086 }
1088 # Just fork, if we are not in foreground mode
1089 if( ! $foreground ) {
1090 chdir '/' or die "Can't chdir to /: $!";
1091 $pid = fork;
1092 setsid or die "Can't start a new session: $!";
1093 umask 0;
1094 }
1095 else {
1096 $pid = $$;
1097 }
1099 # Do something useful - put our PID into the pid_file
1100 if( 0 != $pid ) {
1101 open( LOCK_FILE, ">$pid_file" );
1102 print LOCK_FILE "$pid\n";
1103 close( LOCK_FILE );
1104 if( !$foreground ) {
1105 exit( 0 )
1106 };
1107 }
1109 daemon_log(" ", 1);
1110 daemon_log("$prg started!", 1);
1112 # delete old DBsqlite lock files
1113 system('rm -f /tmp/gosa_si_lock*gosa-si-client*');
1115 # detect ip and mac address and complete host address
1116 $client_address = $client_ip.":".$client_port;
1117 my $network_interface= &get_interface_for_ip($client_ip);
1118 $client_mac_address= &get_mac($network_interface);
1119 daemon_log("gosa-si-client ip address detected: $client_ip", 1);
1120 daemon_log("gosa-si-client mac address detected: $client_mac_address", 1);
1123 # import events
1124 &import_events();
1127 # compute hardware checksum
1128 $gotoHardwareChecksum= &generate_hw_digest();
1129 daemon_log("gosa-si-client gotoHardwareChecksum detected: $gotoHardwareChecksum", 1);
1132 # create socket for incoming xml messages
1133 POE::Component::Server::TCP->new(
1134 Alias => 'gosa-si-client',
1135 Port => $client_port,
1136 ClientInput => \&server_input,
1137 );
1138 daemon_log("start socket for incoming xml messages at port '$client_port' ", 1);
1141 # prepare variables
1142 if( inet_aton($server_ip) ){ $server_ip = inet_ntoa(inet_aton($server_ip)); }
1143 ############################################################
1144 # to change
1145 if( $server_ip eq "127.0.1.1" ) { $server_ip = "127.0.0.1" }
1146 ############################################################
1147 if (defined $server_ip && defined $server_port) {
1148 $server_address = $server_ip.":".$server_port;
1149 }
1150 $xml = new XML::Simple();
1151 $default_server_key = $server_key;
1154 # add gosa-si-server address from config file at first position of server list
1155 my $server_check_cfg = Config::IniFiles->new( -file => $cfg_file );
1156 my $server_check = $server_check_cfg->val( "server", "ip");
1157 if( defined $server_check ) {
1158 unshift(@servers, $server_address);
1159 my $servers_string = join(", ", @servers);
1160 daemon_log("INFO: found servers in configuration file: $servers_string", 5);
1161 } else {
1162 my @tmp_servers;
1163 if ( !$server_domain) {
1164 # Try our DNS Searchlist
1165 for my $domain(get_dns_domains()) {
1166 chomp($domain);
1167 my @tmp_domains= &get_server_addresses($domain);
1168 if(@tmp_domains) {
1169 for my $tmp_server(@tmp_domains) {
1170 push @tmp_servers, $tmp_server;
1171 }
1172 }
1173 }
1174 if(@tmp_servers && length(@tmp_servers)==0) {
1175 daemon_log("ERROR: please specify a gosa-si-server address or a domain in config file", 1);
1176 kill 2, $$;
1177 }
1178 } else {
1179 @tmp_servers = &get_server_addresses($server_domain);
1180 if( 0 == @tmp_servers ) {
1181 daemon_log("ERROR: no gosa-si-server found in DNS for domain '$server_domain'",1);
1182 daemon_log("ERROR: please specify a gosa-si-server address or a domain in config file", 1);
1183 kill 2, $$;
1184 }
1185 }
1187 foreach my $server (@tmp_servers) {
1188 unshift(@servers, $server);
1189 }
1190 my $servers_string = join(", ", @servers);
1191 daemon_log("INFO: found servers in DNS: $servers_string", 5);
1192 }
1195 # open fifo for non-gosa-si-client-msgs to gosa-si-server
1196 POSIX::mkfifo("$gosa_si_client_fifo", "0600");
1199 POE::Session->create(
1200 inline_states => {
1201 _start => \&_start,
1202 register_at_gosa_si_server => \®ister_at_gosa_si_server,
1203 trigger_new_key => \&trigger_new_key,
1205 # handle records from each defined file differently
1206 fifo_record => \&fifo_got_record,
1208 # handle file resets and errors the same way for each file
1209 file_reset => \&generic_file_reset,
1210 file_error => \&generic_file_error,
1211 }
1212 );
1214 POE::Kernel->run();
1215 exit;