1 #!/usr/bin/perl
2 #===============================================================================
3 #
4 # FILE: gosa-server
5 #
6 # USAGE: gosa-si-client
7 #
8 # DESCRIPTION:
9 #
10 # OPTIONS: ---
11 # REQUIREMENTS: libnetaddr-ip-perl
12 # BUGS: ---
13 # NOTES:
14 # AUTHOR: (Andreas Rettenberger), <rettenberger@gonicus.de>
15 # COMPANY:
16 # VERSION: 1.0
17 # CREATED: 12.09.2007 08:54:41 CEST
18 # REVISION: ---
19 #===============================================================================
21 use strict;
22 use warnings;
23 use Getopt::Long;
24 use Config::IniFiles;
25 use POSIX;
26 use Time::HiRes qw( gettimeofday );
28 use POE qw(Component::Server::TCP Wheel::FollowTail);
29 use IO::Socket::INET;
30 use NetAddr::IP;
31 use Data::Dumper;
32 use Crypt::Rijndael;
33 use GOSA::GosaSupportDaemon;
34 use Digest::MD5 qw(md5_hex md5 md5_base64);
35 use MIME::Base64;
36 use XML::Simple;
37 use Net::DNS;
38 use File::Basename;
39 use File::Spec;
41 # Workaround: need pure perl to make it work with UTF-8 :-(
42 $XML::Simple::PREFERRED_PARSER= "XML::SAX::PurePerl";
44 my $event_dir = "/usr/lib/gosa-si/client/events";
45 use lib "/usr/lib/gosa-si/client/events";
47 my (%cfg_defaults, $foreground, $verbose, $pid_file, $procid, $pid, $log_file, $fai_logpath);
48 my ($server_ip, $server_port, $server_key, $server_timeout, $server_domain, $server_key_lifetime);
49 my ($client_ip, $client_port, $client_mac_address, $ldap_enabled, $ldap_config, $pam_config, $nss_config);
50 my $xml;
51 my $default_server_key;
52 my $event_hash;
53 my @servers;
54 my $gotoHardwareChecksum;
55 my $gosa_si_client_fifo;
56 my %files_to_watch;
57 $verbose= 1;
59 # globalise variables which are used in imported events
60 our $cfg_file;
61 our $opts_file;
62 our $server_address;
63 our $client_address;
64 our $client_ip;
65 our $client_mac_address;
66 our $client_dnsname;
67 our $client_force_hostname;
68 our $server_key;
70 # default variables
71 our $REGISTERED = 0;
73 # path to fifo for non-gosa-si-client messages to gosa-si-server
74 $gosa_si_client_fifo = "/var/run/gosa-si-client.socket";
75 %files_to_watch = (fifo => $gosa_si_client_fifo);
77 # in function register_at_gosa_si_server, after which period of seconds a new registration should be tried if a registration was
78 # not successful until now
79 my $delay_set_time = 5;
80 our $prg= basename($0);
82 # all x seconds the client reports logged_in users to gosa-si-server
83 my $trigger_logged_in_users_report_delay = 600;
85 # directory where all log files from installation are stored
86 my $fai_log_dir = "/tmp/fai";
88 %cfg_defaults = (
89 "general" =>
90 {"log-file" => [\$log_file, "/var/run/".$prg.".log"],
91 "pid-file" => [\$pid_file, "/var/run/".$prg.".pid"],
92 "opts-file" => [\$opts_file, "/var/run/".$prg.".opts"],
93 },
94 "client" =>
95 {"port" => [\$client_port, "20083"],
96 "ip" => [\$client_ip, "0.0.0.0"],
97 "mac-address" => [\$client_mac_address, "00:00:00:00:00:00"],
98 "server-domain" => [\$server_domain, ""],
99 "ldap" => [\$ldap_enabled, 1],
100 "ldap-config" => [\$ldap_config, "/etc/ldap/ldap.conf"],
101 "pam-config" => [\$pam_config, "/etc/pam_ldap.conf"],
102 "nss-config" => [\$nss_config, "/etc/libnss-ldap.conf"],
103 "fai-logpath" => [\$fai_logpath, "/var/log/fai/fai.log"],
104 "force-hostname" => [\$client_force_hostname, "false"],
105 },
106 "server" => {
107 "ip" => [\$server_ip, "127.0.0.1"],
108 "port" => [\$server_port, "20081"],
109 "key" => [\$server_key, ""],
110 "timeout" => [\$server_timeout, 10],
111 "key-lifetime" => [\$server_key_lifetime, 600],
112 },
114 );
117 #=== FUNCTIONS = functions =====================================================
119 #=== FUNCTION ================================================================
120 # NAME: check_cmdline_param
121 # PARAMETERS:
122 # RETURNS:
123 # DESCRIPTION:
124 #===============================================================================
125 sub check_cmdline_param () {
126 my $err_config;
127 my $err_counter = 0;
128 if(not defined($cfg_file)) {
129 $cfg_file = "/etc/gosa-si/client.conf";
130 if(! -r $cfg_file) {
131 $err_config = "please specify a config file";
132 $err_counter += 1;
133 }
134 }
135 if( $err_counter > 0 ) {
136 &usage( "", 1 );
137 if( defined( $err_config)) { print STDERR "$err_config\n"}
138 print STDERR "\n";
139 exit( -1 );
140 }
141 }
144 #=== FUNCTION ================================================================
145 # NAME: read_configfile
146 # PARAMETERS: cfg_file - string -
147 # RETURNS:
148 # DESCRIPTION:
149 #===============================================================================
150 sub read_configfile {
151 my ($cfg_file, %cfg_defaults) = @_ ;
152 my $cfg;
153 if( defined( $cfg_file) && ( length($cfg_file) > 0 )) {
154 if( -r $cfg_file ) {
155 $cfg = Config::IniFiles->new( -file => $cfg_file );
156 } else {
157 print STDERR "Couldn't read config file!";
158 }
159 } else {
160 $cfg = Config::IniFiles->new() ;
161 }
162 foreach my $section (keys %cfg_defaults) {
163 foreach my $param (keys %{$cfg_defaults{ $section }}) {
164 my $pinfo = $cfg_defaults{ $section }{ $param };
165 ${@$pinfo[ 0 ]} = $cfg->val( $section, $param, @$pinfo[ 1 ] );
166 }
167 }
168 }
171 #=== FUNCTION ================================================================
172 # NAME: check_pid
173 # PARAMETERS:
174 # RETURNS:
175 # DESCRIPTION:
176 #===============================================================================
177 sub check_pid {
178 $pid = -1;
179 # Check, if we are already running
180 if( open(LOCK_FILE, "<$pid_file") ) {
181 $pid = <LOCK_FILE>;
182 if( defined $pid ) {
183 chomp( $pid );
184 if( -f "/proc/$pid/stat" ) {
185 my($stat) = `cat /proc/$pid/stat` =~ m/$pid \((.+)\).*/;
186 if( $0 eq $stat ) {
187 close( LOCK_FILE );
188 exit -1;
189 }
190 }
191 }
192 close( LOCK_FILE );
193 unlink( $pid_file );
194 }
196 # create a syslog msg if it is not to possible to open PID file
197 if (not sysopen(LOCK_FILE, $pid_file, O_WRONLY|O_CREAT|O_EXCL, 0644)) {
198 my($msg) = "Couldn't obtain lockfile '$pid_file' ";
199 if (open(LOCK_FILE, '<', $pid_file)
200 && ($pid = <LOCK_FILE>))
201 {
202 chomp($pid);
203 $msg .= "(PID $pid)\n";
204 } else {
205 $msg .= "(unable to read PID)\n";
206 }
207 if( ! ($foreground) ) {
208 openlog( $0, "cons,pid", "daemon" );
209 syslog( "warning", $msg );
210 closelog();
211 }
212 else {
213 print( STDERR " $msg " );
214 }
215 exit( -1 );
216 }
217 }
220 sub sig_int_handler {
221 my ($signal) = @_;
223 daemon_log("shutting down gosa-si-client", 1);
224 system("killall gosa-si-client");
225 }
226 $SIG{INT} = \&sig_int_handler;
229 #=== FUNCTION ================================================================
230 # NAME: logging
231 # PARAMETERS: level - string - default 'info'
232 # msg - string -
233 # facility - string - default 'LOG_DAEMON'
234 # RETURNS:
235 # DESCRIPTION:
236 #===============================================================================
237 sub daemon_log {
238 # log into log_file
239 my( $msg, $level ) = @_;
240 if(not defined $msg) { return }
241 if(not defined $level) { $level = 1 }
242 if(defined $log_file){
243 open(LOG_HANDLE, ">>$log_file");
244 if(not defined open( LOG_HANDLE, ">>$log_file" )) {
245 print STDERR "cannot open $log_file: $!";
246 return }
247 chomp($msg);
248 if($level <= $verbose){
249 my ($seconds, $minutes, $hours, $monthday, $month,
250 $year, $weekday, $yearday, $sommertime) = localtime(time);
251 $hours = $hours < 10 ? $hours = "0".$hours : $hours;
252 $minutes = $minutes < 10 ? $minutes = "0".$minutes : $minutes;
253 $seconds = $seconds < 10 ? $seconds = "0".$seconds : $seconds;
254 my @monthnames = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
255 $month = $monthnames[$month];
256 $monthday = $monthday < 10 ? $monthday = "0".$monthday : $monthday;
257 $year+=1900;
259 my $log_msg = "$month $monthday $hours:$minutes:$seconds $prg $msg\n";
260 print LOG_HANDLE $log_msg;
261 if( $foreground ) {
262 print STDERR $log_msg;
263 }
264 }
265 close( LOG_HANDLE );
266 }
267 }
270 #=== FUNCTION ================================================================
271 # NAME: get_interfaces
272 # PARAMETERS: none
273 # RETURNS: (list of interfaces)
274 # DESCRIPTION: Uses proc fs (/proc/net/dev) to get list of interfaces.
275 #===============================================================================
276 sub get_interfaces {
277 my @result;
278 my $PROC_NET_DEV= ('/proc/net/dev');
280 open(PROC_NET_DEV, "<$PROC_NET_DEV")
281 or die "Could not open $PROC_NET_DEV";
283 my @ifs = <PROC_NET_DEV>;
285 close(PROC_NET_DEV);
287 # Eat first two line
288 shift @ifs;
289 shift @ifs;
291 chomp @ifs;
292 foreach my $line(@ifs) {
293 my $if= (split /:/, $line)[0];
294 $if =~ s/^\s+//;
295 push @result, $if;
296 }
298 return @result;
299 }
301 #=== FUNCTION ================================================================
302 # NAME: get_mac
303 # PARAMETERS: interface name (i.e. eth0)
304 # RETURNS: (mac address)
305 # DESCRIPTION: Uses ioctl to get mac address directly from system.
306 #===============================================================================
307 sub get_mac {
308 my $ifreq= shift;
309 my $result;
310 if ($ifreq && length($ifreq) > 0) {
311 if($ifreq eq "all") {
312 if(defined($server_ip)) {
313 $result = &get_local_mac_for_remote_ip($server_ip);
314 }
315 elsif ($client_mac_address && length($client_mac_address) > 0 && !($client_mac_address eq "00:00:00:00:00:00")){
316 $result = &client_mac_address;
317 }
318 else {
319 $result = "00:00:00:00:00:00";
320 }
321 } else {
322 my $SIOCGIFHWADDR= 0x8927; # man 2 ioctl_list
324 # A configured MAC Address should always override a guessed value
325 if ($client_mac_address and length($client_mac_address) > 0 and not($client_mac_address eq "00:00:00:00:00:00")) {
326 $result= $client_mac_address;
327 }
328 else {
329 socket SOCKET, PF_INET, SOCK_DGRAM, getprotobyname('ip')
330 or die "socket: $!";
332 if(ioctl SOCKET, $SIOCGIFHWADDR, $ifreq) {
333 my ($if, $mac)= unpack 'h36 H12', $ifreq;
335 if (length($mac) > 0) {
336 $mac=~ m/^([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])$/;
337 $mac= sprintf("%s:%s:%s:%s:%s:%s", $1, $2, $3, $4, $5, $6);
338 $result = $mac;
339 }
340 }
341 }
342 }
343 }
344 return $result;
345 }
348 #=== FUNCTION ================================================================
349 # NAME: get_interface_for_ip
350 # PARAMETERS: ip address (i.e. 192.168.0.1)
351 # RETURNS: array: list of interfaces if ip=0.0.0.0, matching interface if found, undef else
352 # DESCRIPTION: Uses proc fs (/proc/net/dev) to get list of interfaces.
353 #===============================================================================
354 sub get_interface_for_ip {
355 my $result;
356 my $ip= shift;
357 if ($ip && length($ip) > 0) {
358 my @ifs= &get_interfaces();
359 if($ip eq "0.0.0.0") {
360 $result = "all";
361 } else {
362 foreach (@ifs) {
363 my $if=$_;
364 if(get_ip($if) eq $ip) {
365 $result = $if;
366 last;
367 }
368 }
369 }
370 }
371 return $result;
372 }
375 #=== FUNCTION ================================================================
376 # NAME: get_ip
377 # PARAMETERS: interface name (i.e. eth0)
378 # RETURNS: (ip address)
379 # DESCRIPTION: Uses ioctl to get ip address directly from system.
380 #===============================================================================
381 sub get_ip {
382 my $ifreq= shift;
383 my $result= "";
384 my $SIOCGIFADDR= 0x8915; # man 2 ioctl_list
385 my $proto= getprotobyname('ip');
387 socket SOCKET, PF_INET, SOCK_DGRAM, $proto
388 or die "socket: $!";
390 if(ioctl SOCKET, $SIOCGIFADDR, $ifreq) {
391 my ($if, $sin) = unpack 'a16 a16', $ifreq;
392 my ($port, $addr) = sockaddr_in $sin;
393 my $ip = inet_ntoa $addr;
395 if ($ip && length($ip) > 0) {
396 $result = $ip;
397 }
398 }
400 return $result;
401 }
404 #=== FUNCTION ================================================================
405 # NAME: get_local_mac_for_remote_ip
406 # PARAMETERS: none (takes server_ip from global variable)
407 # RETURNS: (ip address from interface that is used for communication)
408 # DESCRIPTION: Uses ioctl to get routing table from system, checks which entry
409 # matches (defaultroute last).
410 #===============================================================================
411 sub get_local_mac_for_remote_ip {
412 my $server_ip= shift;
413 my $result= "00:00:00:00:00:00";
415 if($server_ip =~ /^(\d\d?\d?\.){3}\d\d?\d?$/) {
416 my $PROC_NET_ROUTE= ('/proc/net/route');
418 open(PROC_NET_ROUTE, "<$PROC_NET_ROUTE")
419 or die "Could not open $PROC_NET_ROUTE";
421 my @ifs = <PROC_NET_ROUTE>;
423 close(PROC_NET_ROUTE);
425 # Eat header line
426 shift @ifs;
427 chomp @ifs;
428 foreach my $line(@ifs) {
429 my ($Iface,$Destination,$Gateway,$Flags,$RefCnt,$Use,$Metric,$Mask,$MTU,$Window,$IRTT)=split(/\s/, $line);
430 my $destination;
431 my $mask;
432 my ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Destination);
433 $destination= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
434 ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Mask);
435 $mask= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
436 if(new NetAddr::IP($server_ip)->within(new NetAddr::IP($destination, $mask))) {
437 # destination matches route, save mac and exit
438 $result= &get_mac($Iface);
439 last;
440 }
441 }
442 } else {
443 daemon_log("get_local_mac_for_remote_ip was called with a non-ip parameter: $server_ip", 1);
444 }
445 return $result;
446 }
448 sub get_local_ip_for_remote_ip {
449 my $server_ip= shift;
450 my $result="0.0.0.0";
452 if($server_ip =~ /^(\d\d?\d?\.){3}\d\d?\d?$/) {
453 if($server_ip eq "127.0.0.1") {
454 $result="127.0.0.1";
455 } else {
456 my $PROC_NET_ROUTE= ('/proc/net/route');
458 open(PROC_NET_ROUTE, "<$PROC_NET_ROUTE")
459 or die "Could not open $PROC_NET_ROUTE";
461 my @ifs = <PROC_NET_ROUTE>;
463 close(PROC_NET_ROUTE);
465 # Eat header line
466 shift @ifs;
467 chomp @ifs;
468 foreach my $line(@ifs) {
469 my ($Iface,$Destination,$Gateway,$Flags,$RefCnt,$Use,$Metric,$Mask,$MTU,$Window,$IRTT)=split(/\s/, $line);
470 my $destination;
471 my $mask;
472 my ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Destination);
473 $destination= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
474 ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Mask);
475 $mask= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
476 if(new NetAddr::IP($server_ip)->within(new NetAddr::IP($destination, $mask))) {
477 # destination matches route, save mac and exit
478 $result= &get_ip($Iface);
479 last;
480 }
481 }
482 }
483 } else {
484 daemon_log("get_local_ip_for_remote_ip was called with a non-ip parameter: $server_ip", 1);
485 }
486 return $result;
487 }
490 sub generate_hw_digest {
491 my $hw_data;
492 foreach my $line (split /\n/, `cat /proc/bus/pci/devices`) {
493 $hw_data.= sprintf "%s", $line =~ /[^\s]+\s([^\s]+)\s.*/;
494 }
495 return(md5_base64($hw_data));
496 }
499 sub create_passwd {
500 my $new_passwd = "";
501 for(my $i=0; $i<31; $i++) {
502 $new_passwd .= ("a".."z","A".."Z",0..9)[int(rand(62))]
503 }
505 return $new_passwd;
506 }
509 sub create_ciphering {
510 my ($passwd) = @_;
511 if((!defined($passwd)) || length($passwd)==0) {
512 $passwd = "";
513 }
514 $passwd = substr(md5_hex("$passwd") x 32, 0, 32);
515 my $iv = substr(md5_hex('GONICUS GmbH'),0, 16);
516 my $my_cipher = Crypt::Rijndael->new($passwd , Crypt::Rijndael::MODE_CBC());
517 $my_cipher->set_iv($iv);
518 return $my_cipher;
519 }
522 sub encrypt_msg {
523 my ($msg, $key) = @_;
524 my $my_cipher = &create_ciphering($key);
525 my $len;
526 {
527 use bytes;
528 $len= 16-length($msg)%16;
529 }
530 $msg = "\0"x($len).$msg;
531 $msg = $my_cipher->encrypt($msg);
532 chomp($msg = &encode_base64($msg));
533 # there are no newlines allowed inside msg
534 $msg=~ s/\n//g;
535 return $msg;
536 }
539 sub decrypt_msg {
541 my ($msg, $key) = @_ ;
542 $msg = &decode_base64($msg);
543 my $my_cipher = &create_ciphering($key);
544 $msg = $my_cipher->decrypt($msg);
545 $msg =~ s/\0*//g;
546 return $msg;
547 }
550 sub get_server_addresses {
551 my $domain= shift;
552 my @result;
554 my $error = 0;
555 my $res = Net::DNS::Resolver->new;
556 my $query = $res->send("_gosa-si._tcp.".$domain, "SRV");
557 my @hits;
559 if ($query) {
560 foreach my $rr ($query->answer) {
561 push(@hits, $rr->target.":".$rr->port);
562 }
563 }
564 else {
565 #warn "query failed: ", $res->errorstring, "\n";
566 $error++;
567 }
569 if( $error == 0 ) {
570 foreach my $hit (@hits) {
571 my ($hit_name, $hit_port) = split(/:/, $hit);
572 chomp($hit_name);
573 chomp($hit_port);
575 my $address_query = $res->send($hit_name);
576 if( 1 == length($address_query->answer) ) {
577 foreach my $rr ($address_query->answer) {
578 push(@result, $rr->address.":".$hit_port);
579 }
580 }
581 }
582 }
584 return @result;
585 }
588 #=== FUNCTION ================================================================
589 # NAME: send_msg_hash_to_target
590 # PARAMETERS: msg_hash - hash - xml_hash created with function create_xml_hash
591 # PeerAddr string - socket address to send msg
592 # PeerPort string - socket port, if not included in socket address
593 # RETURNS: nothing
594 # DESCRIPTION: ????
595 #===============================================================================
596 sub send_msg_hash_to_target {
597 my ($msg_hash, $address, $encrypt_key) = @_ ;
598 my $msg = &create_xml_string($msg_hash);
599 my $header = @{$msg_hash->{'header'}}[0];
600 my $error = &send_msg_to_target($msg, $address, $encrypt_key, $header);
602 return $error;
603 }
606 sub send_msg_to_target {
607 my ($msg, $address, $encrypt_key, $msg_header) = @_ ;
608 my $error = 0;
610 if( $msg_header ) { $msg_header = "'$msg_header'-"; }
611 else { $msg_header = ""; }
613 # encrypt xml msg
614 my $crypted_msg = &encrypt_msg($msg, $encrypt_key);
616 # opensocket
617 my $socket = &open_socket($address);
618 if( !$socket ) {
619 daemon_log("ERROR: cannot send ".$msg_header."msg to $address , host not reachable", 1);
620 $error++;
621 }
623 # send xml msg
624 if( $error == 0 ) {
625 print $socket $crypted_msg."\n";
626 daemon_log("INFO: send ".$msg_header."msg to $address", 5);
627 daemon_log("DEBUG: message:\n$msg", 8);
628 }
630 # close socket in any case
631 if( $socket ) {
632 close $socket;
633 }
635 return $error;
636 }
639 sub write_to_file {
640 my ($string, $file) = @_;
641 my $error = 0;
643 if( not defined $file || not -f $file ) {
644 &main::daemon_log("ERROR: $prg: check '-f file' failed: $file", 1);
645 $error++;
646 }
647 if( not defined $string || 0 == length($string)) {
648 &main::daemon_log("ERROR: $prg: empty string to write to file '$file'", 1);
649 $error++;
650 }
652 if( $error == 0 ) {
654 chomp($string);
656 if (open(FILE, ">> $file")){
657 print FILE $string."\n";
658 close(FILE);
659 }
660 }
662 return;
663 }
666 sub open_socket {
667 my ($PeerAddr, $PeerPort) = @_ ;
668 if(defined($PeerPort)){
669 $PeerAddr = $PeerAddr.":".$PeerPort;
670 }
671 my $socket;
672 $socket = new IO::Socket::INET(PeerAddr => $PeerAddr,
673 Porto => "tcp",
674 Type => SOCK_STREAM,
675 Timeout => 5,
676 );
677 if(not defined $socket) {
678 return;
679 }
680 &daemon_log("open_socket: $PeerAddr", 7);
681 return $socket;
682 }
685 #=== FUNCTION ================================================================
686 # NAME: register_at_server
687 # PARAMETERS:
688 # RETURNS:
689 # DESCRIPTION:
690 #===============================================================================
691 sub register_at_gosa_si_server {
692 my ($kernel) = $_[KERNEL];
693 my $try_to_register = 0;
695 # if client is already registered, stop registration process
696 if ($REGISTERED) {
697 $kernel->delay('register_at_gosa_si_server');
699 # client is not registered, start registration process
700 } else {
701 # clear all other triggered events and wait till registration was successful
702 $kernel->delay('trigger_new_key');
704 # create new passwd and ciphering object for client-server communication
705 $server_key = &create_passwd();
707 my $events = join( ",", keys %{$event_hash} );
708 while(1) {
709 # fetch first gosa-si-server from @servers
710 my $server = shift(@servers);
712 # append shifted gosa-si-server at the end of @servers, so looking for servers never stop if
713 # a registration never occured
714 push( @servers, $server );
716 # Check if our ip is resolvable - if not: don't try to register
717 my $ip= &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
718 my $dnsname= gethostbyaddr(inet_aton($ip), AF_INET);
719 if(!defined($dnsname)) {
720 &write_to_file("goto-error-dns:$ip", $fai_logpath);
721 exit(1);
722 }
724 # create registration msg
725 my $local_ip = &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
726 my $local_mac = &get_local_mac_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
727 my $register_hash = &create_xml_hash("here_i_am", $local_ip.":".$client_port, $server);
728 &add_content2xml_hash($register_hash, "new_passwd", $server_key);
729 &add_content2xml_hash($register_hash, "mac_address", $local_mac);
730 &add_content2xml_hash($register_hash, "events", $events);
731 &add_content2xml_hash($register_hash, "gotoHardwareChecksum", $gotoHardwareChecksum);
733 # Add $HOSTNAME from ENV if force-hostname is set
734 if( defined($client_force_hostname) && $client_force_hostname eq "true") {
735 if(defined($ENV{HOSTNAME}) && length($ENV{HOSTNAME}) >0 ) {
736 &add_content2xml_hash($register_hash, "force-hostname", $ENV{HOSTNAME});
737 } else {
738 &main::daemon_log("force-hostname was set to true, but no \$HOSTNAME was found in Environment!",0);
739 }
740 }
742 # send xml hash to server with general server passwd
743 my $res = &send_msg_hash_to_target($register_hash, $server, $default_server_key);
745 # if delivery of registration msg succeed
746 if($res == 0) {
747 # reset try_to_register
748 $try_to_register = 0;
750 # Set fixed client address and mac address
751 $client_ip= &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
752 $client_address= "$client_ip:$client_port";
753 $client_mac_address = $local_mac;
754 $client_dnsname = $dnsname;
756 # delivery of registration msg failed
757 } else {
758 $try_to_register++;
759 # wait 1 sec until trying to register again
760 sleep(1);
761 next;
762 }
764 if( $try_to_register >= @servers ) { last; }
766 } # end of while
768 # one circle through all servers finished and no registration succeed
769 if ( $try_to_register >= @servers ) {
770 &write_to_file("gosa-si-no-server-available", $fai_logpath);
771 $kernel->delay_set('register_at_gosa_si_server', $delay_set_time);
773 # delivery of registraion msg succeed, waiting for server response
774 } else {
775 daemon_log("INFO: waiting for msg 'register_at_gosa_si_server'",5);
776 $kernel->delay_set('register_at_gosa_si_server', $delay_set_time);
777 # clear old settings and set it again
778 $kernel->delay('trigger_new_key');
779 $kernel->delay_set('trigger_new_key', $server_key_lifetime);
780 }
782 }
783 return;
784 }
787 sub check_key_and_xml_validity {
788 my ($crypted_msg, $module_key) = @_;
790 my $msg;
791 my $msg_hash;
792 eval{
793 $msg = &decrypt_msg($crypted_msg, $module_key);
794 &main::daemon_log("decrypted_msg: \n$msg", 8);
796 $msg_hash = $xml->XMLin($msg, ForceArray=>1);
798 ##############
799 # check header
800 my $header_l = $msg_hash->{'header'};
801 if( 1 != @{$header_l} ) {
802 die 'no or more headers specified';
803 }
804 my $header = @{$header_l}[0];
805 if( 0 == length $header) {
806 die 'header has length 0';
807 }
809 ##############
810 # check source
811 my $source_l = $msg_hash->{'source'};
812 if( 1 != @{$source_l} ) {
813 die 'no or more than 1 sources specified';
814 }
815 my $source = @{$source_l}[0];
816 if( 0 == length $source) {
817 die 'source has length 0';
818 }
819 unless( $source =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ) {
820 die "source '$source' is neither a complete ip-address with port nor 'GOSA'";
821 }
823 ##############
824 # check target
825 my $target_l = $msg_hash->{'target'};
826 if( 1 != @{$target_l} ) {
827 die 'no or more than 1 targets specified ';
828 }
829 my $target = @{$target_l}[0];
830 if( 0 == length $target) {
831 die 'target has length 0 ';
832 }
833 unless( $target =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ){
834 die "source is neither a complete ip-address with port nor 'GOSA'";
835 }
836 };
837 if($@) {
838 &main::daemon_log("WARNING: do not understand the message or msg is not gosa-si envelope conform:", 5);
839 &main::daemon_log("$@", 8);
840 $msg = undef;
841 $msg_hash = undef;
842 }
844 return ($msg, $msg_hash);
845 }
848 sub check_outgoing_xml_validity {
849 my ($msg) = @_;
851 my $msg_hash;
852 eval{
853 $msg_hash = $xml->XMLin($msg, ForceArray=>1);
855 ##############
856 # check header
857 my $header_l = $msg_hash->{'header'};
858 if( 1 != @{$header_l} ) {
859 die 'no or more than one headers specified';
860 }
861 my $header = @{$header_l}[0];
862 if( 0 == length $header) {
863 die 'header has length 0';
864 }
866 ##############
867 # check source
868 my $source_l = $msg_hash->{'source'};
869 if( 1 != @{$source_l} ) {
870 die 'no or more than 1 sources specified';
871 }
872 my $source = @{$source_l}[0];
873 if( 0 == length $source) {
874 die 'source has length 0';
875 }
876 unless( $source =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ||
877 $source =~ /^GOSA$/i ) {
878 die "source '$source' is neither a complete ip-address with port";
879 }
881 ##############
882 # check target
883 my $target_l = $msg_hash->{'target'};
884 if( 1 != @{$target_l} ) {
885 die "no or more than one targets specified";
886 }
887 foreach my $target (@$target_l) {
888 if( 0 == length $target) {
889 die "target has length 0";
890 }
891 unless( $target =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ) {
892 die "target '$target' is not a complete ip-address with port or a valid target name";
893 }
894 }
895 };
896 if($@) {
897 daemon_log("WARNING: outgoing msg is not gosa-si envelope conform", 5);
898 daemon_log("$@ $msg", 8);
899 $msg_hash = undef;
900 }
901 return ($msg_hash);
902 }
905 sub import_events {
907 if (not -e $event_dir) {
908 daemon_log("ERROR: cannot find directory or directory is not readable: $event_dir", 1);
909 }
910 opendir (DIR, $event_dir) or die "ERROR while loading gosa-si-events from directory $event_dir : $!\n";
912 while (defined (my $event = readdir (DIR))) {
913 if( $event eq "." || $event eq ".." ) { next; }
915 eval{ require $event; };
916 if( $@ ) {
917 daemon_log("ERROR: import of event module '$event' failed", 1);
918 daemon_log("$@", 1);
919 next;
920 }
922 $event =~ /(\S*?).pm$/;
923 my $event_module = $1;
924 my $events_l = eval( $1."::get_events()") ;
925 foreach my $event_name (@{$events_l}) {
926 $event_hash->{$event_name} = $event_module;
927 }
929 }
931 my @all_events = keys %$event_hash;
932 my $all_events_string = join(", ", @all_events);
934 daemon_log("INFO: imported events: $all_events_string", 5);
935 }
937 sub trigger_new_key {
938 my ($kernel) = $_[KERNEL] ;
940 my $msg = "<xml><header>new_key</header><source>$client_address</source><target>$client_address</target></xml>";
941 &send_msg_to_target($msg, $client_address, $server_key, 'new_key');
943 $kernel->delay_set('trigger_new_key', $server_key_lifetime);
944 }
947 sub trigger_logged_in_users_report {
948 my ($kernel) = $_[KERNEL] ;
950 # just do if client is registered already
951 if( $REGISTERED ) {
952 my $result = qx(/usr/bin/w -hs);
953 my @res_lines;
955 if( defined $result ) {
956 chomp($result);
957 @res_lines = split("\n", $result);
958 }
960 my @logged_in_user_list;
961 foreach my $line (@res_lines) {
962 chomp($line);
963 my @line_parts = split(/\s+/, $line);
964 push(@logged_in_user_list, $line_parts[0]);
965 }
966 system("echo 'CURRENTLY_LOGGED_IN ".join(" ", @logged_in_user_list)."' > /var/run/gosa-si-client.socket");
967 $kernel->delay_set('trigger_logged_in_users_report', $trigger_logged_in_users_report_delay);
968 } else {
969 # try it in 1 sec again
970 $kernel->delay_set('trigger_logged_in_users_report', 1);
971 }
972 }
975 sub generic_file_reset {
976 my ( $heap, $wheel_id ) = @_[ HEAP, ARG0 ];
978 my $service = $heap->{services}->{$wheel_id};
979 daemon_log("INFO: '$service' watching reset", 5);
980 return;
981 }
983 sub generic_file_error {
984 my ( $heap, $operation, $errno, $error_string, $wheel_id ) =
985 @_[ HEAP, ARG0, ARG1, ARG2, ARG3 ];
987 my $service = $heap->{services}->{$wheel_id};
988 daemon_log("ERROR: '$service' watcher $operation error $errno: $error_string", 1);
989 daemon_log("ERROR: shutting down '$service' file watcher", 1);
991 delete $heap->{services}->{$wheel_id};
992 delete $heap->{watchers}->{$wheel_id};
993 return;
994 }
997 sub fifo_got_record {
998 my $file_record = $_[ARG0];
999 my $header;
1000 my $content = "";
1001 daemon_log("DEBUG: fifo got record: $file_record", 7);
1003 $file_record =~ /^(\S+)[ ]?([\s\S]+)?$/;
1004 if( defined $1 ) {
1005 $header = $1;
1006 } else {
1007 return;
1008 }
1010 if( defined $2 ) {
1011 $content = $2;
1012 }
1014 my $clmsg_hash = &create_xml_hash("CLMSG_$header", $client_address, $server_address, $content);
1015 &add_content2xml_hash($clmsg_hash, "macaddress", $client_mac_address);
1016 my $clmsg = &create_xml_string($clmsg_hash);
1017 &send_msg_to_target($clmsg, $server_address, $server_key, "CLMSG_$header");
1019 # if installation finished, save all log files
1020 if ($file_record eq "TASKBEGIN finish") {
1021 &save_fai_log($fai_log_dir);
1022 }
1024 return;
1025 }
1028 sub save_fai_log {
1029 my ($fai_log_dir) = @_ ;
1030 my $FAI_DIR;
1032 opendir($FAI_DIR, $fai_log_dir);
1033 if (not defined $FAI_DIR) {
1034 daemon_log("ERROR: can not open directory $fai_log_dir: $!", 1);
1035 return;
1036 }
1038 my @log_files = readdir($FAI_DIR);
1039 closedir($FAI_DIR);
1040 my @log_list;
1042 foreach my $log_file (@log_files) {
1043 if( $log_file eq "." || $log_file eq ".." ) { next; }
1044 my $log = "log_file:$log_file:";
1045 $log_file = File::Spec->catfile( $fai_log_dir, $log_file );
1046 open(my $FILE, "<$log_file");
1047 if (not defined $FILE ) {
1048 daemon_log("ERROR: can not open '$log_file': $!", 1);
1049 next;
1050 }
1051 my @lines = <$FILE>;
1052 my $log_string = join("", @lines);
1053 $log .= &encode_base64($log_string);
1054 push(@log_list, $log);
1055 close ($FILE);
1056 }
1058 my $all_log_string = join("\n", @log_list);
1059 my $msg_hash = &create_xml_hash("CLMSG_save_fai_log", $client_address, $server_address, $all_log_string);
1060 &add_content2xml_hash($msg_hash, "macaddress", $client_mac_address);
1061 my $msg = &create_xml_string($msg_hash);
1062 &send_msg_to_target($msg, $server_address, $server_key, "CLMSG_save_fai_log");
1064 }
1067 sub _start {
1068 my ($kernel, $heap) = @_[KERNEL, HEAP];
1069 $kernel->alias_set('client_session');
1071 # force a registration at a gosa-si-server
1072 $kernel->yield('register_at_gosa_si_server');
1074 # install all file watcher defined
1075 while( my($file_name, $file) = each %files_to_watch ) {
1076 my $file_watcher = POE::Wheel::FollowTail->new(
1077 Filename => $file,
1078 InputEvent => $file_name."_record",
1079 ResetEvent => "file_reset",
1080 ErrorEvent => "file_error",
1081 );
1082 $heap->{services}->{ $file_watcher->ID } = $file_name;
1083 $heap->{watchers}->{ $file_watcher->ID } = $file_watcher;
1084 }
1085 $kernel->yield('trigger_logged_in_users_report');
1086 }
1089 sub _default {
1090 daemon_log("ERROR: can not handle incoming msg with header '$_[ARG0]'", 1);
1091 return;
1092 }
1095 sub server_input {
1096 my ($kernel, $heap, $input, $wheel) = @_[KERNEL, HEAP, ARG0, ARG1];
1097 my $remote_ip = $heap->{'remote_ip'},
1098 my $error = 0;
1099 my $answer;
1102 daemon_log("INFO: Incoming msg from '$remote_ip'", 5);
1103 daemon_log("DEBUG: Incoming msg:\n$input\n", 8);
1105 my ($msg, $msg_hash) = &check_key_and_xml_validity($input, $server_key);
1106 if( (!$msg) || (!$msg_hash) ) {
1107 daemon_log("WARNING: Deciphering of incoming msg failed", 3);
1108 if($server_address =~ /$remote_ip/) {
1109 # got a msg from gosa-si-server which can not be decrypted, may the secrete not up-to-date
1110 # cause a reregistering with a new secrete handshake
1111 daemon_log("WARNING: Message from gosa-si-server could not be understood, cause reregistering at server", 3);
1113 # if client is alread in a registration process, that means not registered, do nothing
1114 # if not, cause re-registration
1115 if (not $REGISTERED) {
1116 &daemon_log("WARNING: gosa-si-client is already in a registration process so ignore this message", 3);
1117 } else {
1118 $REGISTERED = 0;
1119 $kernel->post('client_session', 'register_at_gosa_si_server');
1120 }
1121 }
1122 $error++;
1123 }
1126 ######################
1127 # process incoming msg
1128 if( $error == 0 ) {
1129 my $header = @{$msg_hash->{header}}[0];
1130 my $source = @{$msg_hash->{source}}[0];
1132 if( exists $event_hash->{$header} ) {
1134 # a event exists with the header as name
1135 daemon_log("DEBUG: found event '$header' at event-module '".$event_hash->{$header}."'", 7);
1136 no strict 'refs';
1137 $answer = &{$event_hash->{$header}."::$header"}($msg, $msg_hash);
1138 }
1139 else {
1140 daemon_log("WARNING: no event '$header' found in event modules under $event_dir", 1);
1141 }
1142 }
1144 ########
1145 # answer
1146 if( $answer ) {
1148 #check gosa-si envelope validity
1149 my $answer_hash = &check_outgoing_xml_validity($answer);
1151 if( $answer_hash ) {
1152 # answer is valid
1154 # preprocessing
1155 if( $answer =~ "<header>registered</header>") {
1156 # set registered flag to true to stop sending further registered msgs
1157 $REGISTERED = 1;
1158 }
1159 else {
1160 $answer =~ /<header>(\S+)<\/header>/;
1161 &send_msg_to_target($answer, $server_address, $server_key, $1);
1162 }
1164 # postprocessing
1165 if( $answer =~ "<header>new_key</header>") {
1166 # set new key to global variable
1167 $answer =~ /<new_key>(\S*?)<\/new_key>/;
1168 my $new_key = $1;
1169 $server_key = $new_key;
1170 }
1171 }
1173 }
1175 return;
1176 }
1179 #==== MAIN = main ==============================================================
1180 # parse commandline options
1181 Getopt::Long::Configure( "bundling" );
1182 GetOptions("h|help" => \&usage,
1183 "c|config=s" => \$cfg_file,
1184 "f|foreground" => \$foreground,
1185 "v|verbose+" => \$verbose,
1186 );
1188 # read and set config parameters
1189 &check_cmdline_param ;
1190 &read_configfile($cfg_file, %cfg_defaults);
1191 &check_pid;
1194 # forward error messages to logfile
1195 if ( ! $foreground ) {
1196 open( STDIN, '+>/dev/null' );
1197 open( STDOUT, '+>&STDIN' );
1198 open( STDERR, '+>&STDIN' );
1199 }
1201 # Just fork, if we are not in foreground mode
1202 if( ! $foreground ) {
1203 chdir '/' or die "Can't chdir to /: $!";
1204 $pid = fork;
1205 setsid or die "Can't start a new session: $!";
1206 umask 0;
1207 }
1208 else {
1209 $pid = $$;
1210 }
1212 # Do something useful - put our PID into the pid_file
1213 if( 0 != $pid ) {
1214 open( LOCK_FILE, ">$pid_file" );
1215 print LOCK_FILE "$pid\n";
1216 close( LOCK_FILE );
1217 if( !$foreground ) {
1218 exit( 0 )
1219 };
1220 }
1222 daemon_log(" ", 1);
1223 daemon_log("$prg started!", 1);
1225 # delete old DBsqlite lock files
1226 system('rm -f /tmp/gosa_si_lock*gosa-si-client*');
1228 # detect ip and mac address and complete host address
1229 $client_address = $client_ip.":".$client_port;
1230 my $network_interface= &get_interface_for_ip($client_ip);
1231 $client_mac_address= &get_mac($network_interface);
1232 daemon_log("gosa-si-client ip address detected: $client_ip", 1);
1233 daemon_log("gosa-si-client mac address detected: $client_mac_address", 1);
1236 # import events
1237 &import_events();
1240 # compute hardware checksum
1241 $gotoHardwareChecksum= &generate_hw_digest();
1242 daemon_log("gosa-si-client gotoHardwareChecksum detected: $gotoHardwareChecksum", 1);
1245 # create socket for incoming xml messages
1246 POE::Component::Server::TCP->new(
1247 Alias => 'gosa-si-client',
1248 Port => $client_port,
1249 ClientInput => \&server_input,
1250 );
1251 daemon_log("start socket for incoming xml messages at port '$client_port' ", 1);
1254 # prepare variables
1255 if( inet_aton($server_ip) ){ $server_ip = inet_ntoa(inet_aton($server_ip)); }
1256 ############################################################
1257 # to change
1258 if( $server_ip eq "127.0.1.1" ) { $server_ip = "127.0.0.1" }
1259 ############################################################
1260 if (defined $server_ip && defined $server_port) {
1261 $server_address = $server_ip.":".$server_port;
1262 }
1263 $xml = new XML::Simple();
1264 $default_server_key = $server_key;
1267 # add gosa-si-server address from config file at first position of server list
1268 my $server_check_cfg = Config::IniFiles->new( -file => $cfg_file );
1269 my $server_check = $server_check_cfg->val( "server", "ip");
1270 if( defined $server_check ) {
1271 unshift(@servers, $server_address);
1272 my $servers_string = join(", ", @servers);
1273 daemon_log("INFO: found servers in configuration file: $servers_string", 5);
1274 } else {
1275 my @tmp_servers;
1276 if ( !$server_domain) {
1277 # Try our DNS Searchlist
1278 for my $domain(get_dns_domains()) {
1279 chomp($domain);
1280 my @tmp_domains= &get_server_addresses($domain);
1281 if(@tmp_domains) {
1282 for my $tmp_server(@tmp_domains) {
1283 push @tmp_servers, $tmp_server;
1284 }
1285 }
1286 }
1287 if(@tmp_servers && length(@tmp_servers)==0) {
1288 daemon_log("ERROR: please specify a gosa-si-server address or a domain in config file", 1);
1289 kill 2, $$;
1290 }
1291 } else {
1292 @tmp_servers = &get_server_addresses($server_domain);
1293 if( 0 == @tmp_servers ) {
1294 daemon_log("ERROR: no gosa-si-server found in DNS for domain '$server_domain'",1);
1295 daemon_log("ERROR: please specify a gosa-si-server address or a domain in config file", 1);
1296 kill 2, $$;
1297 }
1298 }
1300 foreach my $server (@tmp_servers) {
1301 unshift(@servers, $server);
1302 }
1303 my $servers_string = join(", ", @servers);
1304 daemon_log("INFO: found servers in DNS: $servers_string", 5);
1305 }
1308 # open fifo for non-gosa-si-client-msgs to gosa-si-server
1309 POSIX::mkfifo("$gosa_si_client_fifo", "0600");
1312 POE::Session->create(
1313 inline_states => {
1314 _start => \&_start,
1315 _default => \&_default,
1316 register_at_gosa_si_server => \®ister_at_gosa_si_server,
1318 # trigger periodical tasks
1319 trigger_new_key => \&trigger_new_key,
1320 trigger_logged_in_users_report => \&trigger_logged_in_users_report,
1322 # handle records from each defined file differently
1323 fifo_record => \&fifo_got_record,
1325 # handle file resets and errors the same way for each file
1326 file_reset => \&generic_file_reset,
1327 file_error => \&generic_file_error,
1328 }
1329 );
1331 POE::Kernel->run();
1332 exit;