d9bf2393d29dd576ce5850a5106a87a3e39ecf01
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 $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 = 10;
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) && ( (-s $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("kill `ps -C gosa-si-client -o pid=`");
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 # xxxxxxxxxxxxxx
620 # opensocket
621 my $socket = &open_socket($address);
622 if( !$socket ) {
623 daemon_log("ERROR: cannot send ".$msg_header."msg to $address , host not reachable", 1);
624 $error++;
625 }
627 # send xml msg
628 if( $error == 0 ) {
629 print $socket $crypted_msg."\n";
630 daemon_log("INFO: send ".$msg_header."msg to $address", 5);
631 daemon_log("DEBUG: message:\n$msg", 8);
632 }
634 # close socket in any case
635 if( $socket ) {
636 close $socket;
637 }
639 return $error;
640 }
643 sub write_to_file {
644 my ($string, $file) = @_;
645 my $error = 0;
647 if( not defined $file || not -f $file ) {
648 &main::daemon_log("ERROR: $prg: check '-f file' failed: $file", 1);
649 $error++;
650 }
651 if( not defined $string || 0 == length($string)) {
652 &main::daemon_log("ERROR: $prg: empty string to write to file '$file'", 1);
653 $error++;
654 }
656 if( $error == 0 ) {
658 chomp($string);
660 if (open(FILE, ">> $file")){
661 print FILE $string."\n";
662 close(FILE);
663 }
664 }
666 return;
667 }
670 sub open_socket {
671 my ($PeerAddr, $PeerPort) = @_ ;
672 if(defined($PeerPort)){
673 $PeerAddr = $PeerAddr.":".$PeerPort;
674 }
675 my $socket;
676 $socket = new IO::Socket::INET(PeerAddr => $PeerAddr,
677 Porto => "tcp",
678 Type => SOCK_STREAM,
679 Timeout => 5,
680 );
681 if(not defined $socket) {
682 return;
683 }
684 &daemon_log("open_socket: $PeerAddr", 7);
685 return $socket;
686 }
689 #=== FUNCTION ================================================================
690 # NAME: register_at_server
691 # PARAMETERS:
692 # RETURNS:
693 # DESCRIPTION:
694 #===============================================================================
695 sub register_at_gosa_si_server {
696 my ($kernel) = $_[KERNEL];
697 my $try_to_register = 0;
699 # if client is already registered, stop registration process
700 if ($REGISTERED) {
701 $kernel->delay('register_at_gosa_si_server');
703 # client is not registered, start registration process
704 } else {
705 # clear all other triggered events and wait till registration was successful
706 $kernel->delay('trigger_new_key');
708 # create new passwd and ciphering object for client-server communication
709 $server_key = &create_passwd();
711 my $events = join( ",", keys %{$event_hash} );
712 while(1) {
713 # fetch first gosa-si-server from @servers
714 my $server = shift(@servers);
716 # append shifted gosa-si-server at the end of @servers, so looking for servers never stop if
717 # a registration never occured
718 push( @servers, $server );
720 # Check if our ip is resolvable - if not: don't try to register
721 my $ip= &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
722 my $dnsname= gethostbyaddr(inet_aton($ip), AF_INET);
723 if(!defined($dnsname)) {
724 &write_to_file("goto-error-dns:$ip", $fai_logpath);
725 exit(1);
726 }
728 # create registration msg
729 my $local_ip = &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
730 my $local_mac = &get_local_mac_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
731 my $register_hash = &create_xml_hash("here_i_am", $local_ip.":".$client_port, $server);
732 &add_content2xml_hash($register_hash, "new_passwd", $server_key);
733 &add_content2xml_hash($register_hash, "mac_address", $local_mac);
734 &add_content2xml_hash($register_hash, "events", $events);
735 &add_content2xml_hash($register_hash, "gotoHardwareChecksum", $gotoHardwareChecksum);
737 # Add $HOSTNAME from ENV if force-hostname is set
738 if( defined($client_force_hostname) && $client_force_hostname eq "true") {
739 if(defined($ENV{HOSTNAME}) && length($ENV{HOSTNAME}) >0 ) {
740 &add_content2xml_hash($register_hash, "force-hostname", $ENV{HOSTNAME});
741 } else {
742 &main::daemon_log("force-hostname was set to true, but no \$HOSTNAME was found in Environment!",0);
743 }
744 }
746 # send xml hash to server with general server passwd
747 my $res = &send_msg_hash_to_target($register_hash, $server, $default_server_key);
749 if( $try_to_register >= @servers ) { last; }
751 # if delivery of registration msg succeed
752 if($res == 0) {
753 # reset try_to_register
754 $try_to_register = 0;
756 # Set fixed client address and mac address
757 $client_ip= &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
758 $client_address= "$client_ip:$client_port";
759 $client_mac_address = $local_mac;
760 $client_dnsname = $dnsname;
761 last;
763 # delivery of registration msg failed
764 } else {
765 $try_to_register++;
766 # wait 1 sec until trying to register again
767 sleep(1);
768 next;
769 }
771 } # end of while
773 # one circle through all servers finished and no registration succeed
774 if ( $try_to_register >= @servers ) {
775 &write_to_file("gosa-si-no-server-available", $fai_logpath);
776 $kernel->delay_set('register_at_gosa_si_server', $delay_set_time);
778 # delivery of registraion msg succeed, waiting for server response
779 } else {
780 daemon_log("INFO: waiting for msg 'register_at_gosa_si_server'",5);
781 $kernel->delay_set('register_at_gosa_si_server', $delay_set_time);
782 # clear old settings and set it again
783 $kernel->delay('trigger_new_key');
784 $kernel->delay_set('trigger_new_key', $server_key_lifetime);
785 }
787 }
788 return;
789 }
792 sub check_key_and_xml_validity {
793 my ($crypted_msg, $module_key) = @_;
795 my $msg;
796 my $msg_hash;
797 eval{
798 $msg = &decrypt_msg($crypted_msg, $module_key);
799 &main::daemon_log("decrypted_msg: \n$msg", 8);
801 $msg_hash = $xml->XMLin($msg, ForceArray=>1);
803 ##############
804 # check header
805 my $header_l = $msg_hash->{'header'};
806 if( 1 != @{$header_l} ) {
807 die 'no or more headers specified';
808 }
809 my $header = @{$header_l}[0];
810 if( 0 == length $header) {
811 die 'header has length 0';
812 }
814 ##############
815 # check source
816 my $source_l = $msg_hash->{'source'};
817 if( 1 != @{$source_l} ) {
818 die 'no or more than 1 sources specified';
819 }
820 my $source = @{$source_l}[0];
821 if( 0 == length $source) {
822 die 'source has length 0';
823 }
824 unless( $source =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ) {
825 die "source '$source' is neither a complete ip-address with port nor 'GOSA'";
826 }
828 ##############
829 # check target
830 my $target_l = $msg_hash->{'target'};
831 if( 1 != @{$target_l} ) {
832 die 'no or more than 1 targets specified ';
833 }
834 my $target = @{$target_l}[0];
835 if( 0 == length $target) {
836 die 'target has length 0 ';
837 }
838 unless( $target =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ){
839 die "source is neither a complete ip-address with port nor 'GOSA'";
840 }
841 };
842 if($@) {
843 &main::daemon_log("WARNING: do not understand the message or msg is not gosa-si envelope conform:", 5);
844 &main::daemon_log("$@", 8);
845 $msg = undef;
846 $msg_hash = undef;
847 }
849 return ($msg, $msg_hash);
850 }
853 sub check_outgoing_xml_validity {
854 my ($msg) = @_;
856 my $msg_hash;
857 eval{
858 $msg_hash = $xml->XMLin($msg, ForceArray=>1);
860 ##############
861 # check header
862 my $header_l = $msg_hash->{'header'};
863 if( 1 != @{$header_l} ) {
864 die 'no or more than one headers specified';
865 }
866 my $header = @{$header_l}[0];
867 if( 0 == length $header) {
868 die 'header has length 0';
869 }
871 ##############
872 # check source
873 my $source_l = $msg_hash->{'source'};
874 if( 1 != @{$source_l} ) {
875 die 'no or more than 1 sources specified';
876 }
877 my $source = @{$source_l}[0];
878 if( 0 == length $source) {
879 die 'source has length 0';
880 }
881 unless( $source =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ||
882 $source =~ /^GOSA$/i ) {
883 die "source '$source' is neither a complete ip-address with port";
884 }
886 ##############
887 # check target
888 my $target_l = $msg_hash->{'target'};
889 if( 1 != @{$target_l} ) {
890 die "no or more than one targets specified";
891 }
892 foreach my $target (@$target_l) {
893 if( 0 == length $target) {
894 die "target has length 0";
895 }
896 unless( $target =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ) {
897 die "target '$target' is not a complete ip-address with port or a valid target name";
898 }
899 }
900 };
901 if($@) {
902 daemon_log("WARNING: outgoing msg is not gosa-si envelope conform", 5);
903 daemon_log("$@ $msg", 8);
904 $msg_hash = undef;
905 }
906 return ($msg_hash);
907 }
910 sub import_events {
912 if (not -e $event_dir) {
913 daemon_log("ERROR: cannot find directory or directory is not readable: $event_dir", 1);
914 }
915 opendir (DIR, $event_dir) or die "ERROR while loading gosa-si-events from directory $event_dir : $!\n";
917 while (defined (my $event = readdir (DIR))) {
918 if( $event eq "." || $event eq ".." ) { next; }
920 eval{ require $event; };
921 if( $@ ) {
922 daemon_log("ERROR: import of event module '$event' failed", 1);
923 daemon_log("$@", 1);
924 next;
925 }
927 $event =~ /(\S*?).pm$/;
928 my $event_module = $1;
929 my $events_l = eval( $1."::get_events()") ;
930 foreach my $event_name (@{$events_l}) {
931 $event_hash->{$event_name} = $event_module;
932 }
934 }
936 my @all_events = keys %$event_hash;
937 my $all_events_string = join(", ", @all_events);
939 daemon_log("INFO: imported events: $all_events_string", 5);
940 }
942 sub trigger_new_key {
943 my ($kernel) = $_[KERNEL] ;
945 my $msg = "<xml><header>new_key</header><source>$client_address</source><target>$client_address</target></xml>";
946 &send_msg_to_target($msg, $client_address, $server_key, 'new_key');
948 $kernel->delay_set('trigger_new_key', $server_key_lifetime);
949 }
952 sub trigger_logged_in_users_report {
953 my ($kernel) = $_[KERNEL] ;
955 # just do if client is registered already
956 if( $REGISTERED ) {
957 my $result = qx(/usr/bin/users);
958 my @logged_in_user_list;
959 if( defined $result ) {
960 chomp($result);
961 @logged_in_user_list = split(/\s/, $result);
962 }
964 system("echo 'CURRENTLY_LOGGED_IN ".join(" ", @logged_in_user_list)."' > /var/run/gosa-si-client.socket");
965 $kernel->delay_set('trigger_logged_in_users_report', $trigger_logged_in_users_report_delay);
966 } else {
967 # try it in 10 sec again
968 $kernel->delay_set('trigger_logged_in_users_report', 10);
969 }
970 }
973 #sub generic_file_reset {
974 # my ( $heap, $wheel_id ) = @_[ HEAP, ARG0 ];
975 #
976 # my $service = $heap->{services}->{$wheel_id};
977 # daemon_log("INFO: '$service' watching reset", 5);
978 # return;
979 #}
981 sub generic_file_error {
982 my ( $heap, $operation, $errno, $error_string, $wheel_id ) =
983 @_[ HEAP, ARG0, ARG1, ARG2, ARG3 ];
985 my $service = $heap->{services}->{$wheel_id};
986 daemon_log("ERROR: '$service' watcher $operation error $errno: $error_string", 1);
987 daemon_log("ERROR: shutting down '$service' file watcher", 1);
989 delete $heap->{services}->{$wheel_id};
990 delete $heap->{watchers}->{$wheel_id};
991 return;
992 }
995 sub fifo_got_record {
996 my $file_record = $_[ARG0];
997 my $header;
998 my $content = "";
999 daemon_log("DEBUG: fifo got record: $file_record", 7);
1001 $file_record =~ /^(\S+)[ ]?([\s\S]+)?$/;
1002 if( defined $1 ) {
1003 $header = $1;
1004 } else {
1005 return;
1006 }
1008 if( defined $2 ) {
1009 $content = $2;
1010 }
1012 my $clmsg_hash = &create_xml_hash("CLMSG_$header", $client_address, $server_address, $content);
1013 &add_content2xml_hash($clmsg_hash, "macaddress", $client_mac_address);
1014 my $clmsg = &create_xml_string($clmsg_hash);
1015 &send_msg_to_target($clmsg, $server_address, $server_key, "CLMSG_$header");
1017 # if installation finished, save all log files
1018 if ($file_record eq "TASKBEGIN finish") {
1019 &save_fai_log($fai_log_dir);
1020 }
1022 return;
1023 }
1026 sub save_fai_log {
1027 my ($fai_log_dir) = @_ ;
1028 my $FAI_DIR;
1030 opendir($FAI_DIR, $fai_log_dir);
1031 if (not defined $FAI_DIR) {
1032 daemon_log("ERROR: can not open directory $fai_log_dir: $!", 1);
1033 return;
1034 }
1036 my @log_files = readdir($FAI_DIR);
1037 closedir($FAI_DIR);
1038 my @log_list;
1040 foreach my $log_file (@log_files) {
1041 if( $log_file eq "." || $log_file eq ".." ) { next; }
1042 my $log = "log_file:$log_file:";
1043 $log_file = File::Spec->catfile( $fai_log_dir, $log_file );
1044 open(my $FILE, "<$log_file");
1045 if (not defined $FILE ) {
1046 daemon_log("ERROR: can not open '$log_file': $!", 1);
1047 next;
1048 }
1049 my @lines = <$FILE>;
1050 my $log_string = join("", @lines);
1051 $log .= &encode_base64($log_string);
1052 push(@log_list, $log);
1053 close ($FILE);
1054 }
1056 my $all_log_string = join("\n", @log_list);
1057 my $msg_hash = &create_xml_hash("CLMSG_save_fai_log", $client_address, $server_address, $all_log_string);
1058 &add_content2xml_hash($msg_hash, "macaddress", $client_mac_address);
1059 my $msg = &create_xml_string($msg_hash);
1060 &send_msg_to_target($msg, $server_address, $server_key, "CLMSG_save_fai_log");
1062 }
1065 sub _start {
1066 my ($kernel, $heap) = @_[KERNEL, HEAP];
1067 $kernel->alias_set('client_session');
1069 # force a registration at a gosa-si-server
1070 $kernel->yield('register_at_gosa_si_server');
1072 # install all file watcher defined
1073 while( my($name, $file) = each %files_to_watch ) {
1074 my $watcher = POE::Wheel::FollowTail->new(
1075 Filename => $file,
1076 InputEvent => $name."_record",
1077 # ResetEvent => "file_reset",
1078 ErrorEvent => "file_error",
1079 );
1080 # $heap->{tail} = POE::Wheel::Run->new(
1081 # Program => [ "/usr/bin/tail", "-f", $file ],
1082 # StdoutEvent => $file_name."_record",
1083 # );
1084 $heap->{services}->{ $watcher->ID } = $name;
1085 $heap->{watchers}->{ $watcher->ID } = $watcher;
1086 }
1087 $kernel->yield('trigger_logged_in_users_report');
1088 }
1091 sub _default {
1092 daemon_log("ERROR: can not handle incoming msg with header '$_[ARG0]'", 1);
1093 return;
1094 }
1097 sub server_input {
1098 my ($kernel, $heap, $input, $wheel) = @_[KERNEL, HEAP, ARG0, ARG1];
1099 my $remote_ip = $heap->{'remote_ip'},
1100 my $error = 0;
1101 my $answer;
1104 daemon_log("INFO: Incoming msg from '$remote_ip'", 5);
1105 daemon_log("DEBUG: Incoming msg:\n$input\n", 8);
1107 my ($msg, $msg_hash) = &check_key_and_xml_validity($input, $server_key);
1108 if( (!$msg) || (!$msg_hash) ) {
1109 daemon_log("WARNING: Deciphering of incoming msg failed", 3);
1110 if($server_address =~ /$remote_ip/) {
1111 # got a msg from gosa-si-server which can not be decrypted, may the secrete not up-to-date
1112 # cause a reregistering with a new secrete handshake
1113 daemon_log("WARNING: Message from gosa-si-server could not be understood, cause reregistering at server", 3);
1115 # if client is alread in a registration process, that means not registered, do nothing
1116 # if not, cause re-registration
1117 if (not $REGISTERED) {
1118 &daemon_log("WARNING: gosa-si-client is already in a registration process so ignore this message", 3);
1119 } else {
1120 $REGISTERED = 0;
1121 $kernel->post('client_session', 'register_at_gosa_si_server');
1122 }
1123 }
1124 $error++;
1125 }
1128 ######################
1129 # process incoming msg
1130 if( $error == 0 ) {
1131 my $header = @{$msg_hash->{header}}[0];
1132 my $source = @{$msg_hash->{source}}[0];
1134 if( exists $event_hash->{$header} ) {
1136 # a event exists with the header as name
1137 daemon_log("DEBUG: found event '$header' at event-module '".$event_hash->{$header}."'", 7);
1138 no strict 'refs';
1139 $answer = &{$event_hash->{$header}."::$header"}($msg, $msg_hash);
1140 }
1141 else {
1142 daemon_log("WARNING: no event '$header' found in event modules under $event_dir", 1);
1143 }
1144 }
1146 ########
1147 # answer
1148 if( $answer ) {
1150 #check gosa-si envelope validity
1151 my $answer_hash = &check_outgoing_xml_validity($answer);
1153 if( $answer_hash ) {
1154 # answer is valid
1156 # preprocessing
1157 if( $answer =~ "<header>registered</header>") {
1158 # set registered flag to true to stop sending further registered msgs
1159 $REGISTERED = 1;
1160 }
1161 else {
1162 $answer =~ /<header>(\S+)<\/header>/;
1163 &send_msg_to_target($answer, $server_address, $server_key, $1);
1164 }
1166 # postprocessing
1167 if( $answer =~ "<header>new_key</header>") {
1168 # set new key to global variable
1169 $answer =~ /<new_key>(\S*?)<\/new_key>/;
1170 my $new_key = $1;
1171 $server_key = $new_key;
1172 }
1173 }
1175 }
1177 return;
1178 }
1181 #==== MAIN = main ==============================================================
1182 # parse commandline options
1183 Getopt::Long::Configure( "bundling" );
1184 GetOptions("h|help" => \&usage,
1185 "c|config=s" => \$cfg_file,
1186 "f|foreground" => \$foreground,
1187 "v|verbose+" => \$verbose,
1188 );
1190 # read and set config parameters
1191 &check_cmdline_param ;
1192 &read_configfile($cfg_file, %cfg_defaults);
1193 &check_pid;
1196 # forward error messages to logfile
1197 if ( ! $foreground ) {
1198 open( STDIN, '+>/dev/null' );
1199 open( STDOUT, '+>&STDIN' );
1200 open( STDERR, '+>&STDIN' );
1201 }
1203 # Just fork, if we are not in foreground mode
1204 if( ! $foreground ) {
1205 chdir '/' or die "Can't chdir to /: $!";
1206 $pid = fork;
1207 setsid or die "Can't start a new session: $!";
1208 umask 0;
1209 }
1210 else {
1211 $pid = $$;
1212 }
1214 # Do something useful - put our PID into the pid_file
1215 if( 0 != $pid ) {
1216 open( LOCK_FILE, ">$pid_file" );
1217 print LOCK_FILE "$pid\n";
1218 close( LOCK_FILE );
1219 if( !$foreground ) {
1220 exit( 0 )
1221 };
1222 }
1224 daemon_log(" ", 1);
1225 daemon_log("$prg started!", 1);
1227 # delete old DBsqlite lock files
1228 system('rm -f /tmp/gosa_si_lock*gosa-si-client*');
1230 # detect ip and mac address and complete host address
1231 $client_address = $client_ip.":".$client_port;
1232 my $network_interface= &get_interface_for_ip($client_ip);
1233 $client_mac_address= &get_mac($network_interface);
1234 daemon_log("gosa-si-client ip address detected: $client_ip", 1);
1235 daemon_log("gosa-si-client mac address detected: $client_mac_address", 1);
1238 # import events
1239 &import_events();
1242 # compute hardware checksum
1243 $gotoHardwareChecksum= &generate_hw_digest();
1244 daemon_log("gosa-si-client gotoHardwareChecksum detected: $gotoHardwareChecksum", 1);
1247 # create socket for incoming xml messages
1248 POE::Component::Server::TCP->new(
1249 Alias => 'gosa-si-client',
1250 Port => $client_port,
1251 ClientInput => \&server_input,
1252 );
1253 daemon_log("start socket for incoming xml messages at port '$client_port' ", 1);
1256 # prepare variables
1257 if( inet_aton($server_ip) ){ $server_ip = inet_ntoa(inet_aton($server_ip)); }
1258 ############################################################
1259 # to change
1260 if( $server_ip eq "127.0.1.1" ) { $server_ip = "127.0.0.1" }
1261 ############################################################
1262 if (defined $server_ip && defined $server_port) {
1263 $server_address = $server_ip.":".$server_port;
1264 }
1265 $xml = new XML::Simple();
1266 $default_server_key = $server_key;
1269 # add gosa-si-server address from config file at first position of server list
1270 my $server_check_cfg = Config::IniFiles->new( -file => $cfg_file );
1271 my $server_check = (defined($server_check_cfg))?$server_check_cfg->val( "server", "ip"):undef;
1272 if( defined $server_check ) {
1273 unshift(@servers, $server_address);
1274 my $servers_string = join(", ", @servers);
1275 daemon_log("INFO: found servers in configuration file: $servers_string", 5);
1276 } else {
1277 my @tmp_servers;
1278 if ( !$server_domain) {
1279 # Try our DNS Searchlist
1280 for my $domain(get_dns_domains()) {
1281 chomp($domain);
1282 my @tmp_domains= &get_server_addresses($domain);
1283 if(@tmp_domains) {
1284 for my $tmp_server(@tmp_domains) {
1285 push @tmp_servers, $tmp_server;
1286 }
1287 }
1288 }
1289 if(@tmp_servers && length(@tmp_servers)==0) {
1290 daemon_log("ERROR: please specify a gosa-si-server address or a domain in config file", 1);
1291 kill 2, $$;
1292 }
1293 } else {
1294 @tmp_servers = &get_server_addresses($server_domain);
1295 if( 0 == @tmp_servers ) {
1296 daemon_log("ERROR: no gosa-si-server found in DNS for domain '$server_domain'",1);
1297 daemon_log("ERROR: please specify a gosa-si-server address or a domain in config file", 1);
1298 kill 2, $$;
1299 }
1300 }
1302 foreach my $server (@tmp_servers) {
1303 unshift(@servers, $server);
1304 }
1305 my $servers_string = join(", ", @servers);
1306 daemon_log("INFO: found servers in DNS: $servers_string", 5);
1307 }
1310 # open fifo for non-gosa-si-client-msgs to gosa-si-server
1311 POSIX::mkfifo("$gosa_si_client_fifo", "0600");
1314 POE::Session->create(
1315 inline_states => {
1316 _start => \&_start,
1317 _default => \&_default,
1318 register_at_gosa_si_server => \®ister_at_gosa_si_server,
1320 # trigger periodical tasks
1321 trigger_new_key => \&trigger_new_key,
1322 trigger_logged_in_users_report => \&trigger_logged_in_users_report,
1324 # handle records from each defined file differently
1325 fifo_record => \&fifo_got_record,
1327 # handle file resets and errors the same way for each file
1328 file_reset => \&generic_file_reset,
1329 file_error => \&generic_file_error,
1330 }
1331 );
1333 POE::Kernel->run();
1334 exit;