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; # no longer used because function moved to GosaSupportDaemon.pm : rettenbe : 16.05.2008
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 chmod 0600, $log_file;
249 if(not defined open( LOG_HANDLE, ">>$log_file" )) {
250 print STDERR "cannot open $log_file: $!";
251 return }
252 chomp($msg);
253 if($level <= $verbose){
254 my ($seconds, $minutes, $hours, $monthday, $month,
255 $year, $weekday, $yearday, $sommertime) = localtime(time);
256 $hours = $hours < 10 ? $hours = "0".$hours : $hours;
257 $minutes = $minutes < 10 ? $minutes = "0".$minutes : $minutes;
258 $seconds = $seconds < 10 ? $seconds = "0".$seconds : $seconds;
259 my @monthnames = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
260 $month = $monthnames[$month];
261 $monthday = $monthday < 10 ? $monthday = "0".$monthday : $monthday;
262 $year+=1900;
264 my $log_msg = "$month $monthday $hours:$minutes:$seconds $prg $msg\n";
265 print LOG_HANDLE $log_msg;
266 if( $foreground ) {
267 print STDERR $log_msg;
268 }
269 }
270 close( LOG_HANDLE );
271 }
272 }
275 #=== FUNCTION ================================================================
276 # NAME: get_interfaces
277 # PARAMETERS: none
278 # RETURNS: (list of interfaces)
279 # DESCRIPTION: Uses proc fs (/proc/net/dev) to get list of interfaces.
280 #===============================================================================
281 sub get_interfaces {
282 my @result;
283 my $PROC_NET_DEV= ('/proc/net/dev');
285 open(PROC_NET_DEV, "<$PROC_NET_DEV")
286 or die "Could not open $PROC_NET_DEV";
288 my @ifs = <PROC_NET_DEV>;
290 close(PROC_NET_DEV);
292 # Eat first two line
293 shift @ifs;
294 shift @ifs;
296 chomp @ifs;
297 foreach my $line(@ifs) {
298 my $if= (split /:/, $line)[0];
299 $if =~ s/^\s+//;
300 push @result, $if;
301 }
303 return @result;
304 }
306 #=== FUNCTION ================================================================
307 # NAME: get_mac
308 # PARAMETERS: interface name (i.e. eth0)
309 # RETURNS: (mac address)
310 # DESCRIPTION: Uses ioctl to get mac address directly from system.
311 #===============================================================================
312 sub get_mac {
313 my $ifreq= shift;
314 my $result;
315 if ($ifreq && length($ifreq) > 0) {
316 if($ifreq eq "all") {
317 if(defined($server_ip)) {
318 $result = &get_local_mac_for_remote_ip($server_ip);
319 }
320 elsif ($client_mac_address && length($client_mac_address) > 0 && !($client_mac_address eq "00:00:00:00:00:00")){
321 $result = &client_mac_address;
322 }
323 else {
324 $result = "00:00:00:00:00:00";
325 }
326 } else {
327 my $SIOCGIFHWADDR= 0x8927; # man 2 ioctl_list
329 # A configured MAC Address should always override a guessed value
330 if ($client_mac_address and length($client_mac_address) > 0 and not($client_mac_address eq "00:00:00:00:00:00")) {
331 $result= $client_mac_address;
332 }
333 else {
334 socket SOCKET, PF_INET, SOCK_DGRAM, getprotobyname('ip')
335 or die "socket: $!";
337 if(ioctl SOCKET, $SIOCGIFHWADDR, $ifreq) {
338 my ($if, $mac)= unpack 'h36 H12', $ifreq;
340 if (length($mac) > 0) {
341 $mac=~ m/^([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])$/;
342 $mac= sprintf("%s:%s:%s:%s:%s:%s", $1, $2, $3, $4, $5, $6);
343 $result = $mac;
344 }
345 }
346 }
347 }
348 }
349 return $result;
350 }
353 #=== FUNCTION ================================================================
354 # NAME: get_interface_for_ip
355 # PARAMETERS: ip address (i.e. 192.168.0.1)
356 # RETURNS: array: list of interfaces if ip=0.0.0.0, matching interface if found, undef else
357 # DESCRIPTION: Uses proc fs (/proc/net/dev) to get list of interfaces.
358 #===============================================================================
359 sub get_interface_for_ip {
360 my $result;
361 my $ip= shift;
362 if ($ip && length($ip) > 0) {
363 my @ifs= &get_interfaces();
364 if($ip eq "0.0.0.0") {
365 $result = "all";
366 } else {
367 foreach (@ifs) {
368 my $if=$_;
369 if(get_ip($if) eq $ip) {
370 $result = $if;
371 last;
372 }
373 }
374 }
375 }
376 return $result;
377 }
380 #=== FUNCTION ================================================================
381 # NAME: get_ip
382 # PARAMETERS: interface name (i.e. eth0)
383 # RETURNS: (ip address)
384 # DESCRIPTION: Uses ioctl to get ip address directly from system.
385 #===============================================================================
386 sub get_ip {
387 my $ifreq= shift;
388 my $result= "";
389 my $SIOCGIFADDR= 0x8915; # man 2 ioctl_list
390 my $proto= getprotobyname('ip');
392 socket SOCKET, PF_INET, SOCK_DGRAM, $proto
393 or die "socket: $!";
395 if(ioctl SOCKET, $SIOCGIFADDR, $ifreq) {
396 my ($if, $sin) = unpack 'a16 a16', $ifreq;
397 my ($port, $addr) = sockaddr_in $sin;
398 my $ip = inet_ntoa $addr;
400 if ($ip && length($ip) > 0) {
401 $result = $ip;
402 }
403 }
405 return $result;
406 }
409 #=== FUNCTION ================================================================
410 # NAME: get_local_mac_for_remote_ip
411 # PARAMETERS: none (takes server_ip from global variable)
412 # RETURNS: (ip address from interface that is used for communication)
413 # DESCRIPTION: Uses ioctl to get routing table from system, checks which entry
414 # matches (defaultroute last).
415 #===============================================================================
416 sub get_local_mac_for_remote_ip {
417 my $server_ip= shift;
418 my $result= "00:00:00:00:00:00";
420 if($server_ip =~ /^(\d\d?\d?\.){3}\d\d?\d?$/) {
421 my $PROC_NET_ROUTE= ('/proc/net/route');
423 open(PROC_NET_ROUTE, "<$PROC_NET_ROUTE")
424 or die "Could not open $PROC_NET_ROUTE";
426 my @ifs = <PROC_NET_ROUTE>;
428 close(PROC_NET_ROUTE);
430 # Eat header line
431 shift @ifs;
432 chomp @ifs;
433 foreach my $line(@ifs) {
434 my ($Iface,$Destination,$Gateway,$Flags,$RefCnt,$Use,$Metric,$Mask,$MTU,$Window,$IRTT)=split(/\s/, $line);
435 my $destination;
436 my $mask;
437 my ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Destination);
438 $destination= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
439 ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Mask);
440 $mask= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
441 if(new NetAddr::IP($server_ip)->within(new NetAddr::IP($destination, $mask))) {
442 # destination matches route, save mac and exit
443 $result= &get_mac($Iface);
444 last;
445 }
446 }
447 } else {
448 daemon_log("get_local_mac_for_remote_ip was called with a non-ip parameter: $server_ip", 1);
449 }
450 return $result;
451 }
453 sub get_local_ip_for_remote_ip {
454 my $server_ip= shift;
455 my $result="0.0.0.0";
457 if($server_ip =~ /^(\d\d?\d?\.){3}\d\d?\d?$/) {
458 if($server_ip eq "127.0.0.1") {
459 $result="127.0.0.1";
460 } else {
461 my $PROC_NET_ROUTE= ('/proc/net/route');
463 open(PROC_NET_ROUTE, "<$PROC_NET_ROUTE")
464 or die "Could not open $PROC_NET_ROUTE";
466 my @ifs = <PROC_NET_ROUTE>;
468 close(PROC_NET_ROUTE);
470 # Eat header line
471 shift @ifs;
472 chomp @ifs;
473 foreach my $line(@ifs) {
474 my ($Iface,$Destination,$Gateway,$Flags,$RefCnt,$Use,$Metric,$Mask,$MTU,$Window,$IRTT)=split(/\s/, $line);
475 my $destination;
476 my $mask;
477 my ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Destination);
478 $destination= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
479 ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Mask);
480 $mask= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
481 if(new NetAddr::IP($server_ip)->within(new NetAddr::IP($destination, $mask))) {
482 # destination matches route, save mac and exit
483 $result= &get_ip($Iface);
484 last;
485 }
486 }
487 }
488 } else {
489 daemon_log("get_local_ip_for_remote_ip was called with a non-ip parameter: $server_ip", 1);
490 }
491 return $result;
492 }
495 sub generate_hw_digest {
496 my $hw_data;
497 foreach my $line (split /\n/, `cat /proc/bus/pci/devices`) {
498 $hw_data.= sprintf "%s", $line =~ /[^\s]+\s([^\s]+)\s.*/;
499 }
500 return(md5_base64($hw_data));
501 }
504 # moved to GosaSupportDaemon: rettenbe, 19.05.2008
505 #sub create_passwd {
506 # my $new_passwd = "";
507 # for(my $i=0; $i<31; $i++) {
508 # $new_passwd .= ("a".."z","A".."Z",0..9)[int(rand(62))]
509 # }
510 #
511 # return $new_passwd;
512 #}
515 sub create_ciphering {
516 my ($passwd) = @_;
517 if((!defined($passwd)) || length($passwd)==0) {
518 $passwd = "";
519 }
520 $passwd = substr(md5_hex("$passwd") x 32, 0, 32);
521 my $iv = substr(md5_hex('GONICUS GmbH'),0, 16);
522 my $my_cipher = Crypt::Rijndael->new($passwd , Crypt::Rijndael::MODE_CBC());
523 $my_cipher->set_iv($iv);
524 return $my_cipher;
525 }
528 sub encrypt_msg {
529 my ($msg, $key) = @_;
530 my $my_cipher = &create_ciphering($key);
531 my $len;
532 {
533 use bytes;
534 $len= 16-length($msg)%16;
535 }
536 $msg = "\0"x($len).$msg;
537 $msg = $my_cipher->encrypt($msg);
538 chomp($msg = &encode_base64($msg));
539 # there are no newlines allowed inside msg
540 $msg=~ s/\n//g;
541 return $msg;
542 }
545 sub decrypt_msg {
547 my ($msg, $key) = @_ ;
548 $msg = &decode_base64($msg);
549 my $my_cipher = &create_ciphering($key);
550 $msg = $my_cipher->decrypt($msg);
551 $msg =~ s/\0*//g;
552 return $msg;
553 }
556 # moved to GosaSupportDaemon: rettenbe: 16.05.2008
557 #sub get_server_addresses {
558 # my $domain= shift;
559 # my @result;
560 #
561 # my $error = 0;
562 # my $res = Net::DNS::Resolver->new;
563 # my $query = $res->send("_gosa-si._tcp.".$domain, "SRV");
564 # my @hits;
565 #
566 # if ($query) {
567 # foreach my $rr ($query->answer) {
568 # push(@hits, $rr->target.":".$rr->port);
569 # }
570 # }
571 # else {
572 # #warn "query failed: ", $res->errorstring, "\n";
573 # $error++;
574 # }
575 #
576 # if( $error == 0 ) {
577 # foreach my $hit (@hits) {
578 # my ($hit_name, $hit_port) = split(/:/, $hit);
579 # chomp($hit_name);
580 # chomp($hit_port);
581 #
582 # my $address_query = $res->send($hit_name);
583 # if( 1 == length($address_query->answer) ) {
584 # foreach my $rr ($address_query->answer) {
585 # push(@result, $rr->address.":".$hit_port);
586 # }
587 # }
588 # }
589 # }
590 #
591 # return @result;
592 #}
595 #=== FUNCTION ================================================================
596 # NAME: send_msg_hash_to_target
597 # PARAMETERS: msg_hash - hash - xml_hash created with function create_xml_hash
598 # PeerAddr string - socket address to send msg
599 # PeerPort string - socket port, if not included in socket address
600 # RETURNS: nothing
601 # DESCRIPTION: ????
602 #===============================================================================
603 sub send_msg_hash_to_target {
604 my ($msg_hash, $address, $encrypt_key) = @_ ;
605 my $msg = &create_xml_string($msg_hash);
606 my $header = @{$msg_hash->{'header'}}[0];
607 my $error = &send_msg_to_target($msg, $address, $encrypt_key, $header);
609 return $error;
610 }
613 sub send_msg_to_target {
614 my ($msg, $address, $encrypt_key, $msg_header) = @_ ;
615 my $error = 0;
617 if( $msg_header ) { $msg_header = "'$msg_header'-"; }
618 else { $msg_header = ""; }
620 # encrypt xml msg
621 my $crypted_msg = &encrypt_msg($msg, $encrypt_key);
623 # xxxxxxxxxxxxxx
627 # opensocket
628 my $socket = &open_socket($address);
629 if( !$socket ) {
630 daemon_log("ERROR: cannot send ".$msg_header."msg to $address , host not reachable", 1);
631 $error++;
632 }
634 # send xml msg
635 if( $error == 0 ) {
636 print $socket $crypted_msg."\n";
637 daemon_log("INFO: send ".$msg_header."msg to $address", 5);
638 daemon_log("DEBUG: message:\n$msg", 8);
639 }
641 # close socket in any case
642 if( $socket ) {
643 close $socket;
644 }
646 return $error;
647 }
650 sub write_to_file {
651 my ($string, $file) = @_;
652 my $error = 0;
654 if( not defined $file || not -f $file ) {
655 &main::daemon_log("ERROR: $prg: check '-f file' failed: $file", 1);
656 $error++;
657 }
658 if( not defined $string || 0 == length($string)) {
659 &main::daemon_log("ERROR: $prg: empty string to write to file '$file'", 1);
660 $error++;
661 }
663 if( $error == 0 ) {
665 chomp($string);
667 if (open(FILE, ">> $file")){
668 print FILE $string."\n";
669 close(FILE);
670 }
671 }
673 return;
674 }
677 sub open_socket {
678 my ($PeerAddr, $PeerPort) = @_ ;
679 if(defined($PeerPort)){
680 $PeerAddr = $PeerAddr.":".$PeerPort;
681 }
682 my $socket;
683 $socket = new IO::Socket::INET(PeerAddr => $PeerAddr,
684 Porto => "tcp",
685 Type => SOCK_STREAM,
686 Timeout => 5,
687 );
688 if(not defined $socket) {
689 return;
690 }
691 &daemon_log("open_socket: $PeerAddr", 7);
692 return $socket;
693 }
696 #=== FUNCTION ================================================================
697 # NAME: register_at_server
698 # PARAMETERS:
699 # RETURNS:
700 # DESCRIPTION:
701 #===============================================================================
702 sub register_at_gosa_si_server {
703 my ($kernel) = $_[KERNEL];
704 my $try_to_register = 0;
706 # if client is already registered, stop registration process
707 if ($REGISTERED) {
708 $kernel->delay('register_at_gosa_si_server');
710 # client is not registered, start registration process
711 } else {
712 # clear all other triggered events and wait till registration was successful
713 $kernel->delay('trigger_new_key');
715 # create new passwd and ciphering object for client-server communication
716 $server_key = &create_passwd();
718 my $events = join( ",", keys %{$event_hash} );
719 while(1) {
720 # fetch first gosa-si-server from @servers
721 my $server = shift(@servers);
723 # append shifted gosa-si-server at the end of @servers, so looking for servers never stop if
724 # a registration never occured
725 push( @servers, $server );
727 # Check if our ip is resolvable - if not: don't try to register
728 my $ip= &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
729 my $dnsname= gethostbyaddr(inet_aton($ip), AF_INET);
730 if(!defined($dnsname)) {
731 &write_to_file("goto-error-dns:$ip", $fai_logpath);
732 exit(1);
733 }
735 # create registration msg
736 my $local_ip = &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
737 my $local_mac = &get_local_mac_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
738 my $register_hash = &create_xml_hash("here_i_am", $local_ip.":".$client_port, $server);
739 &add_content2xml_hash($register_hash, "new_passwd", $server_key);
740 &add_content2xml_hash($register_hash, "mac_address", $local_mac);
741 &add_content2xml_hash($register_hash, "events", $events);
742 &add_content2xml_hash($register_hash, "client_status", $client_status);
743 &add_content2xml_hash($register_hash, "client_revision", $client_revision);
744 &add_content2xml_hash($register_hash, "gotoHardwareChecksum", $gotoHardwareChecksum);
745 &add_content2xml_hash($register_hash, "key_lifetime", $server_key_lifetime);
747 # Add $HOSTNAME from ENV if force-hostname is set
748 if( defined($client_force_hostname) && $client_force_hostname eq "true") {
749 if(defined($ENV{HOSTNAME}) && length($ENV{HOSTNAME}) >0 ) {
750 &add_content2xml_hash($register_hash, "force-hostname", $ENV{HOSTNAME});
751 } else {
752 &main::daemon_log("force-hostname was set to true, but no \$HOSTNAME was found in Environment!",0);
753 }
754 }
756 # send xml hash to server with general server passwd
757 my $res = &send_msg_hash_to_target($register_hash, $server, $default_server_key);
759 if( $try_to_register >= @servers ) { last; }
761 # if delivery of registration msg succeed
762 if($res == 0) {
763 # reset try_to_register
764 $try_to_register = 0;
766 # Set fixed client address and mac address
767 $client_ip= &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
768 $client_address= "$client_ip:$client_port";
769 $client_mac_address = $local_mac;
770 $client_dnsname = $dnsname;
771 last;
773 # delivery of registration msg failed
774 } else {
775 $try_to_register++;
776 # wait 1 sec until trying to register again
777 sleep(1);
778 next;
779 }
781 } # end of while
783 # one circle through all servers finished and no registration succeed
784 if ( $try_to_register >= @servers ) {
785 &write_to_file("gosa-si-no-server-available", $fai_logpath);
786 $kernel->delay_set('register_at_gosa_si_server', $delay_set_time);
788 # delivery of registraion msg succeed, waiting for server response
789 } else {
790 daemon_log("INFO: waiting for msg 'register_at_gosa_si_server'",5);
791 $kernel->delay_set('register_at_gosa_si_server', $delay_set_time);
792 # clear old settings and set it again
793 $kernel->delay('trigger_new_key');
794 $kernel->delay_set('trigger_new_key', $server_key_lifetime);
795 }
797 }
798 return;
799 }
802 sub check_key_and_xml_validity {
803 my ($crypted_msg, $module_key) = @_;
805 my $msg;
806 my $msg_hash;
807 eval{
808 $msg = &decrypt_msg($crypted_msg, $module_key);
809 &main::daemon_log("decrypted_msg: \n$msg", 8);
811 $msg_hash = $xml->XMLin($msg, ForceArray=>1);
813 ##############
814 # check header
815 my $header_l = $msg_hash->{'header'};
816 if( 1 != @{$header_l} ) {
817 die 'no or more headers specified';
818 }
819 my $header = @{$header_l}[0];
820 if( 0 == length $header) {
821 die 'header has length 0';
822 }
824 ##############
825 # check source
826 my $source_l = $msg_hash->{'source'};
827 if( 1 != @{$source_l} ) {
828 die 'no or more than 1 sources specified';
829 }
830 my $source = @{$source_l}[0];
831 if( 0 == length $source) {
832 die 'source has length 0';
833 }
834 unless( $source =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ) {
835 die "source '$source' is neither a complete ip-address with port nor 'GOSA'";
836 }
838 ##############
839 # check target
840 my $target_l = $msg_hash->{'target'};
841 if( 1 != @{$target_l} ) {
842 die 'no or more than 1 targets specified ';
843 }
844 my $target = @{$target_l}[0];
845 if( 0 == length $target) {
846 die 'target has length 0 ';
847 }
848 unless( $target =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ){
849 die "source is neither a complete ip-address with port nor 'GOSA'";
850 }
851 };
852 if($@) {
853 &main::daemon_log("WARNING: do not understand the message or msg is not gosa-si envelope conform:", 5);
854 &main::daemon_log("$@", 8);
855 $msg = undef;
856 $msg_hash = undef;
857 }
859 return ($msg, $msg_hash);
860 }
863 sub check_outgoing_xml_validity {
864 my ($msg) = @_;
866 my $msg_hash;
867 eval{
868 $msg_hash = $xml->XMLin($msg, ForceArray=>1);
870 ##############
871 # check header
872 my $header_l = $msg_hash->{'header'};
873 if( 1 != @{$header_l} ) {
874 die 'no or more than one headers specified';
875 }
876 my $header = @{$header_l}[0];
877 if( 0 == length $header) {
878 die 'header has length 0';
879 }
881 ##############
882 # check source
883 my $source_l = $msg_hash->{'source'};
884 if( 1 != @{$source_l} ) {
885 die 'no or more than 1 sources specified';
886 }
887 my $source = @{$source_l}[0];
888 if( 0 == length $source) {
889 die 'source has length 0';
890 }
891 unless( $source =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ||
892 $source =~ /^GOSA$/i ) {
893 die "source '$source' is neither a complete ip-address with port";
894 }
896 ##############
897 # check target
898 my $target_l = $msg_hash->{'target'};
899 if( 1 != @{$target_l} ) {
900 die "no or more than one targets specified";
901 }
902 foreach my $target (@$target_l) {
903 if( 0 == length $target) {
904 die "target has length 0";
905 }
906 unless( $target =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ) {
907 die "target '$target' is not a complete ip-address with port or a valid target name";
908 }
909 }
910 };
911 if($@) {
912 daemon_log("WARNING: outgoing msg is not gosa-si envelope conform", 5);
913 daemon_log("$@ $msg", 8);
914 $msg_hash = undef;
915 }
916 return ($msg_hash);
917 }
920 sub import_events {
922 if (not -e $event_dir) {
923 daemon_log("ERROR: cannot find directory or directory is not readable: $event_dir", 1);
924 }
925 opendir (DIR, $event_dir) or die "ERROR while loading gosa-si-events from directory $event_dir : $!\n";
927 while (defined (my $event = readdir (DIR))) {
928 if( $event eq "." || $event eq ".." ) { next; }
929 daemon_log("INFO: found event module: $event", 5);
930 eval{ require $event; };
931 if( $@ ) {
932 daemon_log("ERROR: import of event module '$event' failed", 1);
933 daemon_log("$@", 1);
934 next;
935 }
937 $event =~ /(\S*?).pm$/;
938 my $event_module = $1;
939 my $events_l = eval( $1."::get_events()") ;
940 foreach my $event_name (@{$events_l}) {
941 $event_hash->{$event_name} = $event_module;
942 }
944 }
946 my @all_events = keys %$event_hash;
947 my $all_events_string = join(", ", @all_events);
949 daemon_log("INFO: imported events: $all_events_string", 5);
950 }
952 sub trigger_new_key {
953 my ($kernel) = $_[KERNEL] ;
955 my $msg = "<xml><header>new_key</header><source>$client_address</source><target>$client_address</target></xml>";
956 &send_msg_to_target($msg, $client_address, $server_key, 'new_key');
958 $kernel->delay_set('trigger_new_key', $server_key_lifetime);
959 }
962 sub trigger_logged_in_users_report {
963 my ($kernel) = $_[KERNEL] ;
965 # just do if client is registered already
966 if( $REGISTERED ) {
967 my $result = qx(/usr/bin/users);
968 my @logged_in_user_list;
969 if( defined $result ) {
970 chomp($result);
971 @logged_in_user_list = split(/\s/, $result);
972 }
974 system("echo 'CURRENTLY_LOGGED_IN ".join(" ", @logged_in_user_list)."' > /var/run/gosa-si-client.socket");
975 $kernel->delay_set('trigger_logged_in_users_report', $trigger_logged_in_users_report_delay);
976 } else {
977 # try it in 10 sec again
978 $kernel->delay_set('trigger_logged_in_users_report', 10);
979 }
980 }
983 #sub generic_file_reset {
984 # my ( $heap, $wheel_id ) = @_[ HEAP, ARG0 ];
985 #
986 # my $service = $heap->{services}->{$wheel_id};
987 # daemon_log("INFO: '$service' watching reset", 5);
988 # return;
989 #}
991 sub generic_file_error {
992 my ( $heap, $operation, $errno, $error_string, $wheel_id ) =
993 @_[ HEAP, ARG0, ARG1, ARG2, ARG3 ];
995 my $service = $heap->{services}->{$wheel_id};
996 daemon_log("ERROR: '$service' watcher $operation error $errno: $error_string", 1);
997 daemon_log("ERROR: shutting down '$service' file watcher", 1);
999 delete $heap->{services}->{$wheel_id};
1000 delete $heap->{watchers}->{$wheel_id};
1001 return;
1002 }
1005 sub fifo_got_record {
1006 my $file_record = $_[ARG0];
1007 my $header;
1008 my $content = "";
1009 daemon_log("DEBUG: fifo got record: $file_record", 7);
1011 $file_record =~ /^(\S+)[ ]?([\s\S]+)?$/;
1012 if( defined $1 ) {
1013 $header = $1;
1014 } else {
1015 return;
1016 }
1018 if( defined $2 ) {
1019 $content = $2;
1020 }
1022 my $clmsg_hash = &create_xml_hash("CLMSG_$header", $client_address, $server_address, $content);
1023 &add_content2xml_hash($clmsg_hash, "macaddress", $client_mac_address);
1024 my $clmsg = &create_xml_string($clmsg_hash);
1025 &send_msg_to_target($clmsg, $server_address, $server_key, "CLMSG_$header");
1027 # if installation finished, save all log files
1028 if ($file_record eq "TASKBEGIN finish") {
1029 &save_fai_log($fai_log_dir);
1030 }
1032 return;
1033 }
1036 sub save_fai_log {
1037 my ($fai_log_dir) = @_ ;
1038 my $FAI_DIR;
1040 opendir($FAI_DIR, $fai_log_dir);
1041 if (not defined $FAI_DIR) {
1042 daemon_log("ERROR: can not open directory $fai_log_dir: $!", 1);
1043 return;
1044 }
1046 my @log_files = readdir($FAI_DIR);
1047 closedir($FAI_DIR);
1048 my @log_list;
1050 foreach my $log_file (@log_files) {
1051 if( $log_file eq "." || $log_file eq ".." ) { next; }
1052 my $log = "log_file:$log_file:";
1053 $log_file = File::Spec->catfile( $fai_log_dir, $log_file );
1054 open(my $FILE, "<$log_file");
1055 if (not defined $FILE ) {
1056 daemon_log("ERROR: can not open '$log_file': $!", 1);
1057 next;
1058 }
1059 my @lines = <$FILE>;
1060 my $log_string = join("", @lines);
1061 $log .= &encode_base64($log_string);
1062 push(@log_list, $log);
1063 close ($FILE);
1064 }
1066 my $all_log_string = join("\n", @log_list);
1067 my $msg_hash = &create_xml_hash("CLMSG_save_fai_log", $client_address, $server_address, $all_log_string);
1068 &add_content2xml_hash($msg_hash, "macaddress", $client_mac_address);
1069 my $msg = &create_xml_string($msg_hash);
1070 &send_msg_to_target($msg, $server_address, $server_key, "CLMSG_save_fai_log");
1072 }
1075 sub _start {
1076 my ($kernel, $heap) = @_[KERNEL, HEAP];
1077 $kernel->alias_set('client_session');
1079 # force a registration at a gosa-si-server
1080 $kernel->yield('register_at_gosa_si_server');
1082 # install all file watcher defined
1083 while( my($name, $file) = each %files_to_watch ) {
1084 my $watcher = POE::Wheel::FollowTail->new(
1085 Filename => $file,
1086 InputEvent => $name."_record",
1087 # ResetEvent => "file_reset",
1088 ErrorEvent => "file_error",
1089 );
1090 # $heap->{tail} = POE::Wheel::Run->new(
1091 # Program => [ "/usr/bin/tail", "-f", $file ],
1092 # StdoutEvent => $file_name."_record",
1093 # );
1094 $heap->{services}->{ $watcher->ID } = $name;
1095 $heap->{watchers}->{ $watcher->ID } = $watcher;
1096 }
1097 $kernel->yield('trigger_logged_in_users_report');
1098 }
1101 sub _default {
1102 daemon_log("ERROR: can not handle incoming msg with header '$_[ARG0]'", 1);
1103 return;
1104 }
1107 sub server_input {
1108 my ($kernel, $heap, $input, $wheel) = @_[KERNEL, HEAP, ARG0, ARG1];
1109 my $remote_ip = $heap->{'remote_ip'},
1110 my $error = 0;
1111 my $answer;
1114 daemon_log("INFO: Incoming msg from '$remote_ip'", 5);
1115 daemon_log("DEBUG: Incoming msg:\n$input\n", 8);
1117 my ($msg, $msg_hash) = &check_key_and_xml_validity($input, $server_key);
1118 if( (!$msg) || (!$msg_hash) ) {
1119 daemon_log("WARNING: Deciphering of incoming msg failed", 3);
1120 if($server_address =~ /$remote_ip/) {
1121 # got a msg from gosa-si-server which can not be decrypted, may the secrete not up-to-date
1122 # cause a reregistering with a new secrete handshake
1123 daemon_log("WARNING: Message from gosa-si-server could not be understood, cause reregistering at server", 3);
1125 # if client is alread in a registration process, that means not registered, do nothing
1126 # if not, cause re-registration
1127 if (not $REGISTERED) {
1128 &daemon_log("WARNING: gosa-si-client is already in a registration process so ignore this message", 3);
1129 } else {
1130 $REGISTERED = 0;
1131 $kernel->post('client_session', 'register_at_gosa_si_server');
1132 }
1133 }
1134 $error++;
1135 }
1138 ######################
1139 # process incoming msg
1140 if( $error == 0 ) {
1141 my $header = @{$msg_hash->{header}}[0];
1142 my $source = @{$msg_hash->{source}}[0];
1144 if( exists $event_hash->{$header} ) {
1146 # a event exists with the header as name
1147 daemon_log("DEBUG: found event '$header' at event-module '".$event_hash->{$header}."'", 7);
1148 no strict 'refs';
1149 $answer = &{$event_hash->{$header}."::$header"}($msg, $msg_hash);
1150 }
1151 else {
1152 daemon_log("WARNING: no event '$header' found in event modules under $event_dir", 1);
1153 }
1154 }
1156 ########
1157 # answer
1158 if( $answer ) {
1160 #check gosa-si envelope validity
1161 my $answer_hash = &check_outgoing_xml_validity($answer);
1163 if( $answer_hash ) {
1164 # answer is valid
1166 # preprocessing
1167 if( $answer =~ "<header>registered</header>") {
1168 # set registered flag to true to stop sending further registered msgs
1169 $REGISTERED = 1;
1170 }
1171 else {
1172 $answer =~ /<header>(\S+)<\/header>/;
1173 &send_msg_to_target($answer, $server_address, $server_key, $1);
1174 }
1176 # postprocessing
1177 if( $answer =~ "<header>new_key</header>") {
1178 # set new key to global variable
1179 $answer =~ /<new_key>(\S*?)<\/new_key>/;
1180 my $new_key = $1;
1181 $server_key = $new_key;
1182 }
1183 }
1185 }
1187 return;
1188 }
1191 #==== MAIN = main ==============================================================
1192 # parse commandline options
1193 Getopt::Long::Configure( "bundling" );
1194 GetOptions("h|help" => \&usage,
1195 "c|config=s" => \$cfg_file,
1196 "f|foreground" => \$foreground,
1197 "v|verbose+" => \$verbose,
1198 );
1200 # read and set config parameters
1201 &check_cmdline_param ;
1202 &read_configfile($cfg_file, %cfg_defaults);
1203 &check_pid;
1206 # forward error messages to logfile
1207 if ( ! $foreground ) {
1208 open( STDIN, '+>/dev/null' );
1209 open( STDOUT, '+>&STDIN' );
1210 open( STDERR, '+>&STDIN' );
1211 }
1213 # Just fork, if we are not in foreground mode
1214 if( ! $foreground ) {
1215 chdir '/' or die "Can't chdir to /: $!";
1216 $pid = fork;
1217 setsid or die "Can't start a new session: $!";
1218 umask 0;
1219 } else {
1220 $pid = $$;
1221 }
1223 # Do something useful - put our PID into the pid_file
1224 if( 0 != $pid ) {
1225 open( LOCK_FILE, ">$pid_file" );
1226 print LOCK_FILE "$pid\n";
1227 close( LOCK_FILE );
1228 if( !$foreground ) {
1229 exit( 0 )
1230 };
1231 }
1233 # parse head url and revision from svn
1234 my $client_status_hash = { 'developmental'=>'revision', 'stable'=>'release'};
1235 $client_version =~ /^\$HeadURL: (\S+) \$:\$Rev: (\d+) \$$/;
1236 $client_headURL = defined $1 ? $1 : 'unknown' ;
1237 $client_revision = defined $2 ? $2 : 'unknown' ;
1238 if ($client_headURL =~ /\/tag\// ||
1239 $client_headURL =~ /\/branches\// ) {
1240 $client_status = "stable";
1241 } else {
1242 $client_status = "developmental" ;
1243 }
1245 daemon_log(" ", 1);
1246 daemon_log("$prg started!", 1);
1247 daemon_log("status: $client_status", 1);
1248 daemon_log($client_status_hash->{$client_status}.": $client_revision", 1);
1250 # delete old DBsqlite lock files
1251 system('rm -f /tmp/gosa_si_lock*gosa-si-client*');
1253 # detect ip and mac address and complete host address
1254 $client_address = $client_ip.":".$client_port;
1255 my $network_interface= &get_interface_for_ip($client_ip);
1256 $client_mac_address= &get_mac($network_interface);
1257 daemon_log("gosa-si-client ip address detected: $client_ip", 1);
1258 daemon_log("gosa-si-client mac address detected: $client_mac_address", 1);
1261 # import events
1262 &import_events();
1265 # compute hardware checksum
1266 $gotoHardwareChecksum= &generate_hw_digest();
1267 daemon_log("gosa-si-client gotoHardwareChecksum detected: $gotoHardwareChecksum", 1);
1270 # create socket for incoming xml messages
1271 POE::Component::Server::TCP->new(
1272 Alias => 'gosa-si-client',
1273 Port => $client_port,
1274 ClientInput => \&server_input,
1275 );
1276 daemon_log("start socket for incoming xml messages at port '$client_port' ", 1);
1279 # prepare variables
1280 if( inet_aton($server_ip) ){ $server_ip = inet_ntoa(inet_aton($server_ip)); }
1281 ############################################################
1282 # to change
1283 #if( $server_ip eq "127.0.1.1" ) { $server_ip = "127.0.0.1" }
1284 ############################################################
1285 if (defined $server_ip && defined $server_port) {
1286 $server_address = $server_ip.":".$server_port;
1287 }
1288 $xml = new XML::Simple();
1289 $default_server_key = $server_key;
1292 # add gosa-si-server address from config file at first position of server list
1293 my $server_check_cfg = Config::IniFiles->new( -file => $cfg_file );
1294 my $server_check = (defined($server_check_cfg))?$server_check_cfg->val( "server", "ip"):undef;
1295 if( defined $server_check ) {
1296 unshift(@servers, $server_address);
1297 my $servers_string = join(", ", @servers);
1298 daemon_log("INFO: found servers in configuration file: $servers_string", 5);
1299 } else {
1300 my @tmp_servers;
1301 if ( !$server_domain) {
1302 # Try our DNS Searchlist
1303 for my $domain(get_dns_domains()) {
1304 chomp($domain);
1305 my @tmp_domains= &get_server_addresses($domain);
1306 if(@tmp_domains) {
1307 for my $tmp_server(@tmp_domains) {
1308 push @tmp_servers, $tmp_server;
1309 }
1310 }
1311 }
1312 if(@tmp_servers && length(@tmp_servers)==0) {
1313 daemon_log("ERROR: please specify a gosa-si-server address or a domain in config file", 1);
1314 kill 2, $$;
1315 }
1316 } else {
1317 @tmp_servers = &get_server_addresses($server_domain);
1318 if( 0 == @tmp_servers ) {
1319 daemon_log("ERROR: no gosa-si-server found in DNS for domain '$server_domain'",1);
1320 daemon_log("ERROR: please specify a gosa-si-server address or a domain in config file", 1);
1321 kill 2, $$;
1322 }
1323 }
1325 foreach my $server (@tmp_servers) {
1326 unshift(@servers, $server);
1327 }
1328 my $servers_string = join(", ", @servers);
1329 daemon_log("INFO: found servers in DNS: $servers_string", 5);
1330 }
1333 # open fifo for non-gosa-si-client-msgs to gosa-si-server
1334 POSIX::mkfifo("$gosa_si_client_fifo", "0600");
1337 POE::Session->create(
1338 inline_states => {
1339 _start => \&_start,
1340 _default => \&_default,
1341 register_at_gosa_si_server => \®ister_at_gosa_si_server,
1343 # trigger periodical tasks
1344 trigger_new_key => \&trigger_new_key,
1345 trigger_logged_in_users_report => \&trigger_logged_in_users_report,
1347 # handle records from each defined file differently
1348 fifo_record => \&fifo_got_record,
1350 # handle file resets and errors the same way for each file
1351 file_reset => \&generic_file_reset,
1352 file_error => \&generic_file_error,
1353 }
1354 );
1356 POE::Kernel->run();
1357 exit;