1 #!/usr/bin/perl
2 #===============================================================================
3 #
4 # FILE: gosa-server
5 #
6 # USAGE: gosa-si-client
7 #
8 # DESCRIPTION:
9 #
10 # OPTIONS: ---
11 # REQUIREMENTS: libnetaddr-ip-perl
12 # BUGS: ---
13 # NOTES:
14 # AUTHOR: (Andreas Rettenberger), <rettenberger@gonicus.de>
15 # COMPANY:
16 # VERSION: 1.0
17 # CREATED: 12.09.2007 08:54:41 CEST
18 # REVISION: ---
19 #===============================================================================
21 use strict;
22 use warnings;
23 use Getopt::Long;
24 use Config::IniFiles;
25 use POSIX;
26 use Time::HiRes qw( gettimeofday );
28 use POE qw(Component::Server::TCP Wheel::FollowTail Wheel::Run);
29 use IO::Socket::INET;
30 use NetAddr::IP;
31 use Data::Dumper;
32 use Crypt::Rijndael;
33 use GOSA::GosaSupportDaemon;
34 use Digest::MD5 qw(md5_hex md5 md5_base64);
35 use MIME::Base64;
36 use XML::Simple;
37 use Net::DNS;
38 use File::Basename;
39 use File::Spec;
41 # Workaround: need pure perl to make it work with UTF-8 :-(
42 $XML::Simple::PREFERRED_PARSER= "XML::SAX::PurePerl";
44 my $client_version = '$HeadURL$:$Rev$';
45 my $client_headURL;
46 my $client_revision;
47 my $client_status;
48 my $event_dir = "/usr/lib/gosa-si/client/events";
49 use lib "/usr/lib/gosa-si/client/events";
51 my (%cfg_defaults, $foreground, $verbose, $pid_file, $procid, $pid, $log_file, $fai_logpath);
52 my ($server_ip, $server_port, $server_key, $server_timeout, $server_domain, $server_key_lifetime);
53 my ($client_ip, $client_port, $client_mac_address, $ldap_enabled, $ldap_config, $pam_config, $nss_config);
54 my $xml;
55 my $default_server_key;
56 my $event_hash;
57 my @servers;
58 my $gotoHardwareChecksum;
59 my $gosa_si_client_fifo;
60 my %files_to_watch;
61 $verbose= 1;
63 # globalise variables which are used in imported events
64 our $cfg_file;
65 our $opts_file;
66 our $server_address;
67 our $client_address;
68 our $client_ip;
69 our $client_mac_address;
70 our $client_dnsname;
71 our $client_force_hostname;
72 our $server_key;
74 # default variables
75 our $REGISTERED = 0;
77 # path to fifo for non-gosa-si-client messages to gosa-si-server
78 $gosa_si_client_fifo = "/var/run/gosa-si-client.socket";
79 %files_to_watch = (fifo => $gosa_si_client_fifo);
81 # in function register_at_gosa_si_server, after which period of seconds a new registration should be tried if a registration was
82 # not successful until now
83 my $delay_set_time = 10;
84 our $prg= basename($0);
86 # all x seconds the client reports logged_in users to gosa-si-server
87 my $trigger_logged_in_users_report_delay = 600;
89 # directory where all log files from installation are stored
90 my $fai_log_dir = "/tmp/fai";
92 %cfg_defaults = (
93 "general" =>
94 {"log-file" => [\$log_file, "/var/run/".$prg.".log"],
95 "pid-file" => [\$pid_file, "/var/run/".$prg.".pid"],
96 "opts-file" => [\$opts_file, "/var/run/".$prg.".opts"],
97 },
98 "client" =>
99 {"port" => [\$client_port, "20083"],
100 "ip" => [\$client_ip, "0.0.0.0"],
101 "mac-address" => [\$client_mac_address, "00:00:00:00:00:00"],
102 "server-domain" => [\$server_domain, ""],
103 "ldap" => [\$ldap_enabled, 1],
104 "ldap-config" => [\$ldap_config, "/etc/ldap/ldap.conf"],
105 "pam-config" => [\$pam_config, "/etc/pam_ldap.conf"],
106 "nss-config" => [\$nss_config, "/etc/libnss-ldap.conf"],
107 "fai-logpath" => [\$fai_logpath, "/var/log/fai/fai.log"],
108 "force-hostname" => [\$client_force_hostname, "false"],
109 },
110 "server" => {
111 "ip" => [\$server_ip, "127.0.0.1"],
112 "port" => [\$server_port, "20081"],
113 "key" => [\$server_key, ""],
114 "timeout" => [\$server_timeout, 10],
115 "key-lifetime" => [\$server_key_lifetime, 600],
116 },
118 );
121 #=== FUNCTIONS = functions =====================================================
123 #=== FUNCTION ================================================================
124 # NAME: check_cmdline_param
125 # PARAMETERS:
126 # RETURNS:
127 # DESCRIPTION:
128 #===============================================================================
129 sub check_cmdline_param () {
130 my $err_config;
131 my $err_counter = 0;
132 if(not defined($cfg_file)) {
133 $cfg_file = "/etc/gosa-si/client.conf";
134 if(! -r $cfg_file) {
135 $err_config = "please specify a config file";
136 $err_counter += 1;
137 }
138 }
139 if( $err_counter > 0 ) {
140 &usage( "", 1 );
141 if( defined( $err_config)) { print STDERR "$err_config\n"}
142 print STDERR "\n";
143 exit( -1 );
144 }
145 }
148 #=== FUNCTION ================================================================
149 # NAME: read_configfile
150 # PARAMETERS: cfg_file - string -
151 # RETURNS:
152 # DESCRIPTION:
153 #===============================================================================
154 sub read_configfile {
155 my ($cfg_file, %cfg_defaults) = @_ ;
156 my $cfg;
157 if( defined( $cfg_file) && ( (-s $cfg_file) > 0 )) {
158 if( -r $cfg_file ) {
159 $cfg = Config::IniFiles->new( -file => $cfg_file );
160 } else {
161 print STDERR "Couldn't read config file!";
162 }
163 } else {
164 $cfg = Config::IniFiles->new() ;
165 }
166 foreach my $section (keys %cfg_defaults) {
167 foreach my $param (keys %{$cfg_defaults{ $section }}) {
168 my $pinfo = $cfg_defaults{ $section }{ $param };
169 ${@$pinfo[ 0 ]} = $cfg->val( $section, $param, @$pinfo[ 1 ] );
170 }
171 }
172 }
175 #=== FUNCTION ================================================================
176 # NAME: check_pid
177 # PARAMETERS:
178 # RETURNS:
179 # DESCRIPTION:
180 #===============================================================================
181 sub check_pid {
182 $pid = -1;
183 # Check, if we are already running
184 if( open(LOCK_FILE, "<$pid_file") ) {
185 $pid = <LOCK_FILE>;
186 if( defined $pid ) {
187 chomp( $pid );
188 if( -f "/proc/$pid/stat" ) {
189 my($stat) = `cat /proc/$pid/stat` =~ m/$pid \((.+)\).*/;
190 if( $0 eq $stat ) {
191 close( LOCK_FILE );
192 exit -1;
193 }
194 }
195 }
196 close( LOCK_FILE );
197 unlink( $pid_file );
198 }
200 # create a syslog msg if it is not to possible to open PID file
201 if (not sysopen(LOCK_FILE, $pid_file, O_WRONLY|O_CREAT|O_EXCL, 0644)) {
202 my($msg) = "Couldn't obtain lockfile '$pid_file' ";
203 if (open(LOCK_FILE, '<', $pid_file)
204 && ($pid = <LOCK_FILE>))
205 {
206 chomp($pid);
207 $msg .= "(PID $pid)\n";
208 } else {
209 $msg .= "(unable to read PID)\n";
210 }
211 if( ! ($foreground) ) {
212 openlog( $0, "cons,pid", "daemon" );
213 syslog( "warning", $msg );
214 closelog();
215 }
216 else {
217 print( STDERR " $msg " );
218 }
219 exit( -1 );
220 }
221 }
224 sub sig_int_handler {
225 my ($signal) = @_;
227 daemon_log("shutting down gosa-si-client", 1);
228 system("kill `ps -C gosa-si-client -o pid=`");
229 }
230 $SIG{INT} = \&sig_int_handler;
233 #=== FUNCTION ================================================================
234 # NAME: logging
235 # PARAMETERS: level - string - default 'info'
236 # msg - string -
237 # facility - string - default 'LOG_DAEMON'
238 # RETURNS:
239 # DESCRIPTION:
240 #===============================================================================
241 sub daemon_log {
242 # log into log_file
243 my( $msg, $level ) = @_;
244 if(not defined $msg) { return }
245 if(not defined $level) { $level = 1 }
246 if(defined $log_file){
247 open(LOG_HANDLE, ">>$log_file");
248 if(not defined open( LOG_HANDLE, ">>$log_file" )) {
249 print STDERR "cannot open $log_file: $!";
250 return }
251 chomp($msg);
252 if($level <= $verbose){
253 my ($seconds, $minutes, $hours, $monthday, $month,
254 $year, $weekday, $yearday, $sommertime) = localtime(time);
255 $hours = $hours < 10 ? $hours = "0".$hours : $hours;
256 $minutes = $minutes < 10 ? $minutes = "0".$minutes : $minutes;
257 $seconds = $seconds < 10 ? $seconds = "0".$seconds : $seconds;
258 my @monthnames = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
259 $month = $monthnames[$month];
260 $monthday = $monthday < 10 ? $monthday = "0".$monthday : $monthday;
261 $year+=1900;
263 my $log_msg = "$month $monthday $hours:$minutes:$seconds $prg $msg\n";
264 print LOG_HANDLE $log_msg;
265 if( $foreground ) {
266 print STDERR $log_msg;
267 }
268 }
269 close( LOG_HANDLE );
270 }
271 }
274 #=== FUNCTION ================================================================
275 # NAME: get_interfaces
276 # PARAMETERS: none
277 # RETURNS: (list of interfaces)
278 # DESCRIPTION: Uses proc fs (/proc/net/dev) to get list of interfaces.
279 #===============================================================================
280 sub get_interfaces {
281 my @result;
282 my $PROC_NET_DEV= ('/proc/net/dev');
284 open(PROC_NET_DEV, "<$PROC_NET_DEV")
285 or die "Could not open $PROC_NET_DEV";
287 my @ifs = <PROC_NET_DEV>;
289 close(PROC_NET_DEV);
291 # Eat first two line
292 shift @ifs;
293 shift @ifs;
295 chomp @ifs;
296 foreach my $line(@ifs) {
297 my $if= (split /:/, $line)[0];
298 $if =~ s/^\s+//;
299 push @result, $if;
300 }
302 return @result;
303 }
305 #=== FUNCTION ================================================================
306 # NAME: get_mac
307 # PARAMETERS: interface name (i.e. eth0)
308 # RETURNS: (mac address)
309 # DESCRIPTION: Uses ioctl to get mac address directly from system.
310 #===============================================================================
311 sub get_mac {
312 my $ifreq= shift;
313 my $result;
314 if ($ifreq && length($ifreq) > 0) {
315 if($ifreq eq "all") {
316 if(defined($server_ip)) {
317 $result = &get_local_mac_for_remote_ip($server_ip);
318 }
319 elsif ($client_mac_address && length($client_mac_address) > 0 && !($client_mac_address eq "00:00:00:00:00:00")){
320 $result = &client_mac_address;
321 }
322 else {
323 $result = "00:00:00:00:00:00";
324 }
325 } else {
326 my $SIOCGIFHWADDR= 0x8927; # man 2 ioctl_list
328 # A configured MAC Address should always override a guessed value
329 if ($client_mac_address and length($client_mac_address) > 0 and not($client_mac_address eq "00:00:00:00:00:00")) {
330 $result= $client_mac_address;
331 }
332 else {
333 socket SOCKET, PF_INET, SOCK_DGRAM, getprotobyname('ip')
334 or die "socket: $!";
336 if(ioctl SOCKET, $SIOCGIFHWADDR, $ifreq) {
337 my ($if, $mac)= unpack 'h36 H12', $ifreq;
339 if (length($mac) > 0) {
340 $mac=~ m/^([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])$/;
341 $mac= sprintf("%s:%s:%s:%s:%s:%s", $1, $2, $3, $4, $5, $6);
342 $result = $mac;
343 }
344 }
345 }
346 }
347 }
348 return $result;
349 }
352 #=== FUNCTION ================================================================
353 # NAME: get_interface_for_ip
354 # PARAMETERS: ip address (i.e. 192.168.0.1)
355 # RETURNS: array: list of interfaces if ip=0.0.0.0, matching interface if found, undef else
356 # DESCRIPTION: Uses proc fs (/proc/net/dev) to get list of interfaces.
357 #===============================================================================
358 sub get_interface_for_ip {
359 my $result;
360 my $ip= shift;
361 if ($ip && length($ip) > 0) {
362 my @ifs= &get_interfaces();
363 if($ip eq "0.0.0.0") {
364 $result = "all";
365 } else {
366 foreach (@ifs) {
367 my $if=$_;
368 if(get_ip($if) eq $ip) {
369 $result = $if;
370 last;
371 }
372 }
373 }
374 }
375 return $result;
376 }
379 #=== FUNCTION ================================================================
380 # NAME: get_ip
381 # PARAMETERS: interface name (i.e. eth0)
382 # RETURNS: (ip address)
383 # DESCRIPTION: Uses ioctl to get ip address directly from system.
384 #===============================================================================
385 sub get_ip {
386 my $ifreq= shift;
387 my $result= "";
388 my $SIOCGIFADDR= 0x8915; # man 2 ioctl_list
389 my $proto= getprotobyname('ip');
391 socket SOCKET, PF_INET, SOCK_DGRAM, $proto
392 or die "socket: $!";
394 if(ioctl SOCKET, $SIOCGIFADDR, $ifreq) {
395 my ($if, $sin) = unpack 'a16 a16', $ifreq;
396 my ($port, $addr) = sockaddr_in $sin;
397 my $ip = inet_ntoa $addr;
399 if ($ip && length($ip) > 0) {
400 $result = $ip;
401 }
402 }
404 return $result;
405 }
408 #=== FUNCTION ================================================================
409 # NAME: get_local_mac_for_remote_ip
410 # PARAMETERS: none (takes server_ip from global variable)
411 # RETURNS: (ip address from interface that is used for communication)
412 # DESCRIPTION: Uses ioctl to get routing table from system, checks which entry
413 # matches (defaultroute last).
414 #===============================================================================
415 sub get_local_mac_for_remote_ip {
416 my $server_ip= shift;
417 my $result= "00:00:00:00:00:00";
419 if($server_ip =~ /^(\d\d?\d?\.){3}\d\d?\d?$/) {
420 my $PROC_NET_ROUTE= ('/proc/net/route');
422 open(PROC_NET_ROUTE, "<$PROC_NET_ROUTE")
423 or die "Could not open $PROC_NET_ROUTE";
425 my @ifs = <PROC_NET_ROUTE>;
427 close(PROC_NET_ROUTE);
429 # Eat header line
430 shift @ifs;
431 chomp @ifs;
432 foreach my $line(@ifs) {
433 my ($Iface,$Destination,$Gateway,$Flags,$RefCnt,$Use,$Metric,$Mask,$MTU,$Window,$IRTT)=split(/\s/, $line);
434 my $destination;
435 my $mask;
436 my ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Destination);
437 $destination= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
438 ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Mask);
439 $mask= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
440 if(new NetAddr::IP($server_ip)->within(new NetAddr::IP($destination, $mask))) {
441 # destination matches route, save mac and exit
442 $result= &get_mac($Iface);
443 last;
444 }
445 }
446 } else {
447 daemon_log("get_local_mac_for_remote_ip was called with a non-ip parameter: $server_ip", 1);
448 }
449 return $result;
450 }
452 sub get_local_ip_for_remote_ip {
453 my $server_ip= shift;
454 my $result="0.0.0.0";
456 if($server_ip =~ /^(\d\d?\d?\.){3}\d\d?\d?$/) {
457 if($server_ip eq "127.0.0.1") {
458 $result="127.0.0.1";
459 } else {
460 my $PROC_NET_ROUTE= ('/proc/net/route');
462 open(PROC_NET_ROUTE, "<$PROC_NET_ROUTE")
463 or die "Could not open $PROC_NET_ROUTE";
465 my @ifs = <PROC_NET_ROUTE>;
467 close(PROC_NET_ROUTE);
469 # Eat header line
470 shift @ifs;
471 chomp @ifs;
472 foreach my $line(@ifs) {
473 my ($Iface,$Destination,$Gateway,$Flags,$RefCnt,$Use,$Metric,$Mask,$MTU,$Window,$IRTT)=split(/\s/, $line);
474 my $destination;
475 my $mask;
476 my ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Destination);
477 $destination= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
478 ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Mask);
479 $mask= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
480 if(new NetAddr::IP($server_ip)->within(new NetAddr::IP($destination, $mask))) {
481 # destination matches route, save mac and exit
482 $result= &get_ip($Iface);
483 last;
484 }
485 }
486 }
487 } else {
488 daemon_log("get_local_ip_for_remote_ip was called with a non-ip parameter: $server_ip", 1);
489 }
490 return $result;
491 }
494 sub generate_hw_digest {
495 my $hw_data;
496 foreach my $line (split /\n/, `cat /proc/bus/pci/devices`) {
497 $hw_data.= sprintf "%s", $line =~ /[^\s]+\s([^\s]+)\s.*/;
498 }
499 return(md5_base64($hw_data));
500 }
503 sub create_passwd {
504 my $new_passwd = "";
505 for(my $i=0; $i<31; $i++) {
506 $new_passwd .= ("a".."z","A".."Z",0..9)[int(rand(62))]
507 }
509 return $new_passwd;
510 }
513 sub create_ciphering {
514 my ($passwd) = @_;
515 if((!defined($passwd)) || length($passwd)==0) {
516 $passwd = "";
517 }
518 $passwd = substr(md5_hex("$passwd") x 32, 0, 32);
519 my $iv = substr(md5_hex('GONICUS GmbH'),0, 16);
520 my $my_cipher = Crypt::Rijndael->new($passwd , Crypt::Rijndael::MODE_CBC());
521 $my_cipher->set_iv($iv);
522 return $my_cipher;
523 }
526 sub encrypt_msg {
527 my ($msg, $key) = @_;
528 my $my_cipher = &create_ciphering($key);
529 my $len;
530 {
531 use bytes;
532 $len= 16-length($msg)%16;
533 }
534 $msg = "\0"x($len).$msg;
535 $msg = $my_cipher->encrypt($msg);
536 chomp($msg = &encode_base64($msg));
537 # there are no newlines allowed inside msg
538 $msg=~ s/\n//g;
539 return $msg;
540 }
543 sub decrypt_msg {
545 my ($msg, $key) = @_ ;
546 $msg = &decode_base64($msg);
547 my $my_cipher = &create_ciphering($key);
548 $msg = $my_cipher->decrypt($msg);
549 $msg =~ s/\0*//g;
550 return $msg;
551 }
554 sub get_server_addresses {
555 my $domain= shift;
556 my @result;
558 my $error = 0;
559 my $res = Net::DNS::Resolver->new;
560 my $query = $res->send("_gosa-si._tcp.".$domain, "SRV");
561 my @hits;
563 if ($query) {
564 foreach my $rr ($query->answer) {
565 push(@hits, $rr->target.":".$rr->port);
566 }
567 }
568 else {
569 #warn "query failed: ", $res->errorstring, "\n";
570 $error++;
571 }
573 if( $error == 0 ) {
574 foreach my $hit (@hits) {
575 my ($hit_name, $hit_port) = split(/:/, $hit);
576 chomp($hit_name);
577 chomp($hit_port);
579 my $address_query = $res->send($hit_name);
580 if( 1 == length($address_query->answer) ) {
581 foreach my $rr ($address_query->answer) {
582 push(@result, $rr->address.":".$hit_port);
583 }
584 }
585 }
586 }
588 return @result;
589 }
592 #=== FUNCTION ================================================================
593 # NAME: send_msg_hash_to_target
594 # PARAMETERS: msg_hash - hash - xml_hash created with function create_xml_hash
595 # PeerAddr string - socket address to send msg
596 # PeerPort string - socket port, if not included in socket address
597 # RETURNS: nothing
598 # DESCRIPTION: ????
599 #===============================================================================
600 sub send_msg_hash_to_target {
601 my ($msg_hash, $address, $encrypt_key) = @_ ;
602 my $msg = &create_xml_string($msg_hash);
603 my $header = @{$msg_hash->{'header'}}[0];
604 my $error = &send_msg_to_target($msg, $address, $encrypt_key, $header);
606 return $error;
607 }
610 sub send_msg_to_target {
611 my ($msg, $address, $encrypt_key, $msg_header) = @_ ;
612 my $error = 0;
614 if( $msg_header ) { $msg_header = "'$msg_header'-"; }
615 else { $msg_header = ""; }
617 # encrypt xml msg
618 my $crypted_msg = &encrypt_msg($msg, $encrypt_key);
620 # xxxxxxxxxxxxxx
624 # opensocket
625 my $socket = &open_socket($address);
626 if( !$socket ) {
627 daemon_log("ERROR: cannot send ".$msg_header."msg to $address , host not reachable", 1);
628 $error++;
629 }
631 # send xml msg
632 if( $error == 0 ) {
633 print $socket $crypted_msg."\n";
634 daemon_log("INFO: send ".$msg_header."msg to $address", 5);
635 daemon_log("DEBUG: message:\n$msg", 8);
636 }
638 # close socket in any case
639 if( $socket ) {
640 close $socket;
641 }
643 return $error;
644 }
647 sub write_to_file {
648 my ($string, $file) = @_;
649 my $error = 0;
651 if( not defined $file || not -f $file ) {
652 &main::daemon_log("ERROR: $prg: check '-f file' failed: $file", 1);
653 $error++;
654 }
655 if( not defined $string || 0 == length($string)) {
656 &main::daemon_log("ERROR: $prg: empty string to write to file '$file'", 1);
657 $error++;
658 }
660 if( $error == 0 ) {
662 chomp($string);
664 if (open(FILE, ">> $file")){
665 print FILE $string."\n";
666 close(FILE);
667 }
668 }
670 return;
671 }
674 sub open_socket {
675 my ($PeerAddr, $PeerPort) = @_ ;
676 if(defined($PeerPort)){
677 $PeerAddr = $PeerAddr.":".$PeerPort;
678 }
679 my $socket;
680 $socket = new IO::Socket::INET(PeerAddr => $PeerAddr,
681 Porto => "tcp",
682 Type => SOCK_STREAM,
683 Timeout => 5,
684 );
685 if(not defined $socket) {
686 return;
687 }
688 &daemon_log("open_socket: $PeerAddr", 7);
689 return $socket;
690 }
693 #=== FUNCTION ================================================================
694 # NAME: register_at_server
695 # PARAMETERS:
696 # RETURNS:
697 # DESCRIPTION:
698 #===============================================================================
699 sub register_at_gosa_si_server {
700 my ($kernel) = $_[KERNEL];
701 my $try_to_register = 0;
703 # if client is already registered, stop registration process
704 if ($REGISTERED) {
705 $kernel->delay('register_at_gosa_si_server');
707 # client is not registered, start registration process
708 } else {
709 # clear all other triggered events and wait till registration was successful
710 $kernel->delay('trigger_new_key');
712 # create new passwd and ciphering object for client-server communication
713 $server_key = &create_passwd();
715 my $events = join( ",", keys %{$event_hash} );
716 while(1) {
717 # fetch first gosa-si-server from @servers
718 my $server = shift(@servers);
720 # append shifted gosa-si-server at the end of @servers, so looking for servers never stop if
721 # a registration never occured
722 push( @servers, $server );
724 # Check if our ip is resolvable - if not: don't try to register
725 my $ip= &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
726 my $dnsname= gethostbyaddr(inet_aton($ip), AF_INET);
727 if(!defined($dnsname)) {
728 &write_to_file("goto-error-dns:$ip", $fai_logpath);
729 exit(1);
730 }
732 # create registration msg
733 my $local_ip = &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
734 my $local_mac = &get_local_mac_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
735 my $register_hash = &create_xml_hash("here_i_am", $local_ip.":".$client_port, $server);
736 &add_content2xml_hash($register_hash, "new_passwd", $server_key);
737 &add_content2xml_hash($register_hash, "mac_address", $local_mac);
738 &add_content2xml_hash($register_hash, "events", $events);
739 &add_content2xml_hash($register_hash, "client_status", $client_status);
740 &add_content2xml_hash($register_hash, "client_revision", $client_revision);
741 &add_content2xml_hash($register_hash, "gotoHardwareChecksum", $gotoHardwareChecksum);
743 # Add $HOSTNAME from ENV if force-hostname is set
744 if( defined($client_force_hostname) && $client_force_hostname eq "true") {
745 if(defined($ENV{HOSTNAME}) && length($ENV{HOSTNAME}) >0 ) {
746 &add_content2xml_hash($register_hash, "force-hostname", $ENV{HOSTNAME});
747 } else {
748 &main::daemon_log("force-hostname was set to true, but no \$HOSTNAME was found in Environment!",0);
749 }
750 }
752 # send xml hash to server with general server passwd
753 my $res = &send_msg_hash_to_target($register_hash, $server, $default_server_key);
755 if( $try_to_register >= @servers ) { last; }
757 # if delivery of registration msg succeed
758 if($res == 0) {
759 # reset try_to_register
760 $try_to_register = 0;
762 # Set fixed client address and mac address
763 $client_ip= &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
764 $client_address= "$client_ip:$client_port";
765 $client_mac_address = $local_mac;
766 $client_dnsname = $dnsname;
767 last;
769 # delivery of registration msg failed
770 } else {
771 $try_to_register++;
772 # wait 1 sec until trying to register again
773 sleep(1);
774 next;
775 }
777 } # end of while
779 # one circle through all servers finished and no registration succeed
780 if ( $try_to_register >= @servers ) {
781 &write_to_file("gosa-si-no-server-available", $fai_logpath);
782 $kernel->delay_set('register_at_gosa_si_server', $delay_set_time);
784 # delivery of registraion msg succeed, waiting for server response
785 } else {
786 daemon_log("INFO: waiting for msg 'register_at_gosa_si_server'",5);
787 $kernel->delay_set('register_at_gosa_si_server', $delay_set_time);
788 # clear old settings and set it again
789 $kernel->delay('trigger_new_key');
790 $kernel->delay_set('trigger_new_key', $server_key_lifetime);
791 }
793 }
794 return;
795 }
798 sub check_key_and_xml_validity {
799 my ($crypted_msg, $module_key) = @_;
801 my $msg;
802 my $msg_hash;
803 eval{
804 $msg = &decrypt_msg($crypted_msg, $module_key);
805 &main::daemon_log("decrypted_msg: \n$msg", 8);
807 $msg_hash = $xml->XMLin($msg, ForceArray=>1);
809 ##############
810 # check header
811 my $header_l = $msg_hash->{'header'};
812 if( 1 != @{$header_l} ) {
813 die 'no or more headers specified';
814 }
815 my $header = @{$header_l}[0];
816 if( 0 == length $header) {
817 die 'header has length 0';
818 }
820 ##############
821 # check source
822 my $source_l = $msg_hash->{'source'};
823 if( 1 != @{$source_l} ) {
824 die 'no or more than 1 sources specified';
825 }
826 my $source = @{$source_l}[0];
827 if( 0 == length $source) {
828 die 'source has length 0';
829 }
830 unless( $source =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ) {
831 die "source '$source' is neither a complete ip-address with port nor 'GOSA'";
832 }
834 ##############
835 # check target
836 my $target_l = $msg_hash->{'target'};
837 if( 1 != @{$target_l} ) {
838 die 'no or more than 1 targets specified ';
839 }
840 my $target = @{$target_l}[0];
841 if( 0 == length $target) {
842 die 'target has length 0 ';
843 }
844 unless( $target =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ){
845 die "source is neither a complete ip-address with port nor 'GOSA'";
846 }
847 };
848 if($@) {
849 &main::daemon_log("WARNING: do not understand the message or msg is not gosa-si envelope conform:", 5);
850 &main::daemon_log("$@", 8);
851 $msg = undef;
852 $msg_hash = undef;
853 }
855 return ($msg, $msg_hash);
856 }
859 sub check_outgoing_xml_validity {
860 my ($msg) = @_;
862 my $msg_hash;
863 eval{
864 $msg_hash = $xml->XMLin($msg, ForceArray=>1);
866 ##############
867 # check header
868 my $header_l = $msg_hash->{'header'};
869 if( 1 != @{$header_l} ) {
870 die 'no or more than one headers specified';
871 }
872 my $header = @{$header_l}[0];
873 if( 0 == length $header) {
874 die 'header has length 0';
875 }
877 ##############
878 # check source
879 my $source_l = $msg_hash->{'source'};
880 if( 1 != @{$source_l} ) {
881 die 'no or more than 1 sources specified';
882 }
883 my $source = @{$source_l}[0];
884 if( 0 == length $source) {
885 die 'source has length 0';
886 }
887 unless( $source =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ||
888 $source =~ /^GOSA$/i ) {
889 die "source '$source' is neither a complete ip-address with port";
890 }
892 ##############
893 # check target
894 my $target_l = $msg_hash->{'target'};
895 if( 1 != @{$target_l} ) {
896 die "no or more than one targets specified";
897 }
898 foreach my $target (@$target_l) {
899 if( 0 == length $target) {
900 die "target has length 0";
901 }
902 unless( $target =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ) {
903 die "target '$target' is not a complete ip-address with port or a valid target name";
904 }
905 }
906 };
907 if($@) {
908 daemon_log("WARNING: outgoing msg is not gosa-si envelope conform", 5);
909 daemon_log("$@ $msg", 8);
910 $msg_hash = undef;
911 }
912 return ($msg_hash);
913 }
916 sub import_events {
918 if (not -e $event_dir) {
919 daemon_log("ERROR: cannot find directory or directory is not readable: $event_dir", 1);
920 }
921 opendir (DIR, $event_dir) or die "ERROR while loading gosa-si-events from directory $event_dir : $!\n";
923 while (defined (my $event = readdir (DIR))) {
924 if( $event eq "." || $event eq ".." ) { next; }
925 daemon_log("INFO: found event module: $event", 5);
926 eval{ require $event; };
927 if( $@ ) {
928 daemon_log("ERROR: import of event module '$event' failed", 1);
929 daemon_log("$@", 1);
930 next;
931 }
933 $event =~ /(\S*?).pm$/;
934 my $event_module = $1;
935 my $events_l = eval( $1."::get_events()") ;
936 foreach my $event_name (@{$events_l}) {
937 $event_hash->{$event_name} = $event_module;
938 }
940 }
942 my @all_events = keys %$event_hash;
943 my $all_events_string = join(", ", @all_events);
945 daemon_log("INFO: imported events: $all_events_string", 5);
946 }
948 sub trigger_new_key {
949 my ($kernel) = $_[KERNEL] ;
951 my $msg = "<xml><header>new_key</header><source>$client_address</source><target>$client_address</target></xml>";
952 &send_msg_to_target($msg, $client_address, $server_key, 'new_key');
954 $kernel->delay_set('trigger_new_key', $server_key_lifetime);
955 }
958 sub trigger_logged_in_users_report {
959 my ($kernel) = $_[KERNEL] ;
961 # just do if client is registered already
962 if( $REGISTERED ) {
963 my $result = qx(/usr/bin/users);
964 my @logged_in_user_list;
965 if( defined $result ) {
966 chomp($result);
967 @logged_in_user_list = split(/\s/, $result);
968 }
970 system("echo 'CURRENTLY_LOGGED_IN ".join(" ", @logged_in_user_list)."' > /var/run/gosa-si-client.socket");
971 $kernel->delay_set('trigger_logged_in_users_report', $trigger_logged_in_users_report_delay);
972 } else {
973 # try it in 10 sec again
974 $kernel->delay_set('trigger_logged_in_users_report', 10);
975 }
976 }
979 #sub generic_file_reset {
980 # my ( $heap, $wheel_id ) = @_[ HEAP, ARG0 ];
981 #
982 # my $service = $heap->{services}->{$wheel_id};
983 # daemon_log("INFO: '$service' watching reset", 5);
984 # return;
985 #}
987 sub generic_file_error {
988 my ( $heap, $operation, $errno, $error_string, $wheel_id ) =
989 @_[ HEAP, ARG0, ARG1, ARG2, ARG3 ];
991 my $service = $heap->{services}->{$wheel_id};
992 daemon_log("ERROR: '$service' watcher $operation error $errno: $error_string", 1);
993 daemon_log("ERROR: shutting down '$service' file watcher", 1);
995 delete $heap->{services}->{$wheel_id};
996 delete $heap->{watchers}->{$wheel_id};
997 return;
998 }
1001 sub fifo_got_record {
1002 my $file_record = $_[ARG0];
1003 my $header;
1004 my $content = "";
1005 daemon_log("DEBUG: fifo got record: $file_record", 7);
1007 $file_record =~ /^(\S+)[ ]?([\s\S]+)?$/;
1008 if( defined $1 ) {
1009 $header = $1;
1010 } else {
1011 return;
1012 }
1014 if( defined $2 ) {
1015 $content = $2;
1016 }
1018 my $clmsg_hash = &create_xml_hash("CLMSG_$header", $client_address, $server_address, $content);
1019 &add_content2xml_hash($clmsg_hash, "macaddress", $client_mac_address);
1020 my $clmsg = &create_xml_string($clmsg_hash);
1021 &send_msg_to_target($clmsg, $server_address, $server_key, "CLMSG_$header");
1023 # if installation finished, save all log files
1024 if ($file_record eq "TASKBEGIN finish") {
1025 &save_fai_log($fai_log_dir);
1026 }
1028 return;
1029 }
1032 sub save_fai_log {
1033 my ($fai_log_dir) = @_ ;
1034 my $FAI_DIR;
1036 opendir($FAI_DIR, $fai_log_dir);
1037 if (not defined $FAI_DIR) {
1038 daemon_log("ERROR: can not open directory $fai_log_dir: $!", 1);
1039 return;
1040 }
1042 my @log_files = readdir($FAI_DIR);
1043 closedir($FAI_DIR);
1044 my @log_list;
1046 foreach my $log_file (@log_files) {
1047 if( $log_file eq "." || $log_file eq ".." ) { next; }
1048 my $log = "log_file:$log_file:";
1049 $log_file = File::Spec->catfile( $fai_log_dir, $log_file );
1050 open(my $FILE, "<$log_file");
1051 if (not defined $FILE ) {
1052 daemon_log("ERROR: can not open '$log_file': $!", 1);
1053 next;
1054 }
1055 my @lines = <$FILE>;
1056 my $log_string = join("", @lines);
1057 $log .= &encode_base64($log_string);
1058 push(@log_list, $log);
1059 close ($FILE);
1060 }
1062 my $all_log_string = join("\n", @log_list);
1063 my $msg_hash = &create_xml_hash("CLMSG_save_fai_log", $client_address, $server_address, $all_log_string);
1064 &add_content2xml_hash($msg_hash, "macaddress", $client_mac_address);
1065 my $msg = &create_xml_string($msg_hash);
1066 &send_msg_to_target($msg, $server_address, $server_key, "CLMSG_save_fai_log");
1068 }
1071 sub _start {
1072 my ($kernel, $heap) = @_[KERNEL, HEAP];
1073 $kernel->alias_set('client_session');
1075 # force a registration at a gosa-si-server
1076 $kernel->yield('register_at_gosa_si_server');
1078 # install all file watcher defined
1079 while( my($name, $file) = each %files_to_watch ) {
1080 my $watcher = POE::Wheel::FollowTail->new(
1081 Filename => $file,
1082 InputEvent => $name."_record",
1083 # ResetEvent => "file_reset",
1084 ErrorEvent => "file_error",
1085 );
1086 # $heap->{tail} = POE::Wheel::Run->new(
1087 # Program => [ "/usr/bin/tail", "-f", $file ],
1088 # StdoutEvent => $file_name."_record",
1089 # );
1090 $heap->{services}->{ $watcher->ID } = $name;
1091 $heap->{watchers}->{ $watcher->ID } = $watcher;
1092 }
1093 $kernel->yield('trigger_logged_in_users_report');
1094 }
1097 sub _default {
1098 daemon_log("ERROR: can not handle incoming msg with header '$_[ARG0]'", 1);
1099 return;
1100 }
1103 sub server_input {
1104 my ($kernel, $heap, $input, $wheel) = @_[KERNEL, HEAP, ARG0, ARG1];
1105 my $remote_ip = $heap->{'remote_ip'},
1106 my $error = 0;
1107 my $answer;
1110 daemon_log("INFO: Incoming msg from '$remote_ip'", 5);
1111 daemon_log("DEBUG: Incoming msg:\n$input\n", 8);
1113 my ($msg, $msg_hash) = &check_key_and_xml_validity($input, $server_key);
1114 if( (!$msg) || (!$msg_hash) ) {
1115 daemon_log("WARNING: Deciphering of incoming msg failed", 3);
1116 if($server_address =~ /$remote_ip/) {
1117 # got a msg from gosa-si-server which can not be decrypted, may the secrete not up-to-date
1118 # cause a reregistering with a new secrete handshake
1119 daemon_log("WARNING: Message from gosa-si-server could not be understood, cause reregistering at server", 3);
1121 # if client is alread in a registration process, that means not registered, do nothing
1122 # if not, cause re-registration
1123 if (not $REGISTERED) {
1124 &daemon_log("WARNING: gosa-si-client is already in a registration process so ignore this message", 3);
1125 } else {
1126 $REGISTERED = 0;
1127 $kernel->post('client_session', 'register_at_gosa_si_server');
1128 }
1129 }
1130 $error++;
1131 }
1134 ######################
1135 # process incoming msg
1136 if( $error == 0 ) {
1137 my $header = @{$msg_hash->{header}}[0];
1138 my $source = @{$msg_hash->{source}}[0];
1140 if( exists $event_hash->{$header} ) {
1142 # a event exists with the header as name
1143 daemon_log("DEBUG: found event '$header' at event-module '".$event_hash->{$header}."'", 7);
1144 no strict 'refs';
1145 $answer = &{$event_hash->{$header}."::$header"}($msg, $msg_hash);
1146 }
1147 else {
1148 daemon_log("WARNING: no event '$header' found in event modules under $event_dir", 1);
1149 }
1150 }
1152 ########
1153 # answer
1154 if( $answer ) {
1156 #check gosa-si envelope validity
1157 my $answer_hash = &check_outgoing_xml_validity($answer);
1159 if( $answer_hash ) {
1160 # answer is valid
1162 # preprocessing
1163 if( $answer =~ "<header>registered</header>") {
1164 # set registered flag to true to stop sending further registered msgs
1165 $REGISTERED = 1;
1166 }
1167 else {
1168 $answer =~ /<header>(\S+)<\/header>/;
1169 &send_msg_to_target($answer, $server_address, $server_key, $1);
1170 }
1172 # postprocessing
1173 if( $answer =~ "<header>new_key</header>") {
1174 # set new key to global variable
1175 $answer =~ /<new_key>(\S*?)<\/new_key>/;
1176 my $new_key = $1;
1177 $server_key = $new_key;
1178 }
1179 }
1181 }
1183 return;
1184 }
1187 #==== MAIN = main ==============================================================
1188 # parse commandline options
1189 Getopt::Long::Configure( "bundling" );
1190 GetOptions("h|help" => \&usage,
1191 "c|config=s" => \$cfg_file,
1192 "f|foreground" => \$foreground,
1193 "v|verbose+" => \$verbose,
1194 );
1196 # read and set config parameters
1197 &check_cmdline_param ;
1198 &read_configfile($cfg_file, %cfg_defaults);
1199 &check_pid;
1202 # forward error messages to logfile
1203 if ( ! $foreground ) {
1204 open( STDIN, '+>/dev/null' );
1205 open( STDOUT, '+>&STDIN' );
1206 open( STDERR, '+>&STDIN' );
1207 }
1209 # Just fork, if we are not in foreground mode
1210 if( ! $foreground ) {
1211 chdir '/' or die "Can't chdir to /: $!";
1212 $pid = fork;
1213 setsid or die "Can't start a new session: $!";
1214 umask 0;
1215 } else {
1216 $pid = $$;
1217 }
1219 # Do something useful - put our PID into the pid_file
1220 if( 0 != $pid ) {
1221 open( LOCK_FILE, ">$pid_file" );
1222 print LOCK_FILE "$pid\n";
1223 close( LOCK_FILE );
1224 if( !$foreground ) {
1225 exit( 0 )
1226 };
1227 }
1229 # parse head url and revision from svn
1230 my $client_status_hash = { 'developmental'=>'revision', 'stable'=>'release'};
1231 $client_version =~ /^\$HeadURL: (\S+) \$:\$Rev: (\d+) \$$/;
1232 $client_headURL = defined $1 ? $1 : 'unknown' ;
1233 $client_revision = defined $2 ? $2 : 'unknown' ;
1234 if ($client_headURL =~ /\/tag\// ||
1235 $client_headURL =~ /\/branches\// ) {
1236 $client_status = "stable";
1237 } else {
1238 $client_status = "developmental" ;
1239 }
1241 daemon_log(" ", 1);
1242 daemon_log("$prg started!", 1);
1243 daemon_log("status: $client_status", 1);
1244 daemon_log($client_status_hash->{$client_status}.": $client_revision", 1);
1246 # delete old DBsqlite lock files
1247 system('rm -f /tmp/gosa_si_lock*gosa-si-client*');
1249 # detect ip and mac address and complete host address
1250 $client_address = $client_ip.":".$client_port;
1251 my $network_interface= &get_interface_for_ip($client_ip);
1252 $client_mac_address= &get_mac($network_interface);
1253 daemon_log("gosa-si-client ip address detected: $client_ip", 1);
1254 daemon_log("gosa-si-client mac address detected: $client_mac_address", 1);
1257 # import events
1258 &import_events();
1261 # compute hardware checksum
1262 $gotoHardwareChecksum= &generate_hw_digest();
1263 daemon_log("gosa-si-client gotoHardwareChecksum detected: $gotoHardwareChecksum", 1);
1266 # create socket for incoming xml messages
1267 POE::Component::Server::TCP->new(
1268 Alias => 'gosa-si-client',
1269 Port => $client_port,
1270 ClientInput => \&server_input,
1271 );
1272 daemon_log("start socket for incoming xml messages at port '$client_port' ", 1);
1275 # prepare variables
1276 if( inet_aton($server_ip) ){ $server_ip = inet_ntoa(inet_aton($server_ip)); }
1277 ############################################################
1278 # to change
1279 if( $server_ip eq "127.0.1.1" ) { $server_ip = "127.0.0.1" }
1280 ############################################################
1281 if (defined $server_ip && defined $server_port) {
1282 $server_address = $server_ip.":".$server_port;
1283 }
1284 $xml = new XML::Simple();
1285 $default_server_key = $server_key;
1288 # add gosa-si-server address from config file at first position of server list
1289 my $server_check_cfg = Config::IniFiles->new( -file => $cfg_file );
1290 my $server_check = (defined($server_check_cfg))?$server_check_cfg->val( "server", "ip"):undef;
1291 if( defined $server_check ) {
1292 unshift(@servers, $server_address);
1293 my $servers_string = join(", ", @servers);
1294 daemon_log("INFO: found servers in configuration file: $servers_string", 5);
1295 } else {
1296 my @tmp_servers;
1297 if ( !$server_domain) {
1298 # Try our DNS Searchlist
1299 for my $domain(get_dns_domains()) {
1300 chomp($domain);
1301 my @tmp_domains= &get_server_addresses($domain);
1302 if(@tmp_domains) {
1303 for my $tmp_server(@tmp_domains) {
1304 push @tmp_servers, $tmp_server;
1305 }
1306 }
1307 }
1308 if(@tmp_servers && length(@tmp_servers)==0) {
1309 daemon_log("ERROR: please specify a gosa-si-server address or a domain in config file", 1);
1310 kill 2, $$;
1311 }
1312 } else {
1313 @tmp_servers = &get_server_addresses($server_domain);
1314 if( 0 == @tmp_servers ) {
1315 daemon_log("ERROR: no gosa-si-server found in DNS for domain '$server_domain'",1);
1316 daemon_log("ERROR: please specify a gosa-si-server address or a domain in config file", 1);
1317 kill 2, $$;
1318 }
1319 }
1321 foreach my $server (@tmp_servers) {
1322 unshift(@servers, $server);
1323 }
1324 my $servers_string = join(", ", @servers);
1325 daemon_log("INFO: found servers in DNS: $servers_string", 5);
1326 }
1329 # open fifo for non-gosa-si-client-msgs to gosa-si-server
1330 POSIX::mkfifo("$gosa_si_client_fifo", "0600");
1333 POE::Session->create(
1334 inline_states => {
1335 _start => \&_start,
1336 _default => \&_default,
1337 register_at_gosa_si_server => \®ister_at_gosa_si_server,
1339 # trigger periodical tasks
1340 trigger_new_key => \&trigger_new_key,
1341 trigger_logged_in_users_report => \&trigger_logged_in_users_report,
1343 # handle records from each defined file differently
1344 fifo_record => \&fifo_got_record,
1346 # handle file resets and errors the same way for each file
1347 file_reset => \&generic_file_reset,
1348 file_error => \&generic_file_error,
1349 }
1350 );
1352 POE::Kernel->run();
1353 exit;