6b7a3e3940d1d1824098ebb8d4f923ac039fd169
1 #!/usr/bin/perl
2 #===============================================================================
3 #
4 # FILE: gosa-server
5 #
6 # USAGE: gosa-si-client
7 #
8 # DESCRIPTION:
9 #
10 # OPTIONS: ---
11 # REQUIREMENTS: libnetaddr-ip-perl
12 # BUGS: ---
13 # NOTES:
14 # AUTHOR: (Andreas Rettenberger), <rettenberger@gonicus.de>
15 # COMPANY:
16 # VERSION: 1.0
17 # CREATED: 12.09.2007 08:54:41 CEST
18 # REVISION: ---
19 #===============================================================================
21 use strict;
22 use warnings;
23 use Getopt::Long;
24 use Config::IniFiles;
25 use POSIX;
26 use Time::HiRes qw( gettimeofday );
28 use POE qw(Component::Server::TCP Wheel::FollowTail Wheel::Run);
29 use IO::Socket::INET;
30 use NetAddr::IP;
31 use Data::Dumper;
32 use Crypt::Rijndael;
33 use GOSA::GosaSupportDaemon;
34 use Digest::MD5 qw(md5_hex md5 md5_base64);
35 use MIME::Base64;
36 use XML::Simple;
37 use Net::DNS;
38 use File::Basename;
39 use File::Spec;
41 # Workaround: need pure perl to make it work with UTF-8 :-(
42 $XML::Simple::PREFERRED_PARSER= "XML::SAX::PurePerl";
44 my $client_version = "$HeadURL$:$Rev$";
45 my $event_dir = "/usr/lib/gosa-si/client/events";
46 use lib "/usr/lib/gosa-si/client/events";
48 my (%cfg_defaults, $foreground, $verbose, $pid_file, $procid, $pid, $log_file, $fai_logpath);
49 my ($server_ip, $server_port, $server_key, $server_timeout, $server_domain, $server_key_lifetime);
50 my ($client_ip, $client_port, $client_mac_address, $ldap_enabled, $ldap_config, $pam_config, $nss_config);
51 my $xml;
52 my $default_server_key;
53 my $event_hash;
54 my @servers;
55 my $gotoHardwareChecksum;
56 my $gosa_si_client_fifo;
57 my %files_to_watch;
58 $verbose= 1;
60 # globalise variables which are used in imported events
61 our $cfg_file;
62 our $opts_file;
63 our $server_address;
64 our $client_address;
65 our $client_ip;
66 our $client_mac_address;
67 our $client_dnsname;
68 our $client_force_hostname;
69 our $server_key;
71 # default variables
72 our $REGISTERED = 0;
74 # path to fifo for non-gosa-si-client messages to gosa-si-server
75 $gosa_si_client_fifo = "/var/run/gosa-si-client.socket";
76 %files_to_watch = (fifo => $gosa_si_client_fifo);
78 # in function register_at_gosa_si_server, after which period of seconds a new registration should be tried if a registration was
79 # not successful until now
80 my $delay_set_time = 10;
81 our $prg= basename($0);
83 # all x seconds the client reports logged_in users to gosa-si-server
84 my $trigger_logged_in_users_report_delay = 600;
86 # directory where all log files from installation are stored
87 my $fai_log_dir = "/tmp/fai";
89 %cfg_defaults = (
90 "general" =>
91 {"log-file" => [\$log_file, "/var/run/".$prg.".log"],
92 "pid-file" => [\$pid_file, "/var/run/".$prg.".pid"],
93 "opts-file" => [\$opts_file, "/var/run/".$prg.".opts"],
94 },
95 "client" =>
96 {"port" => [\$client_port, "20083"],
97 "ip" => [\$client_ip, "0.0.0.0"],
98 "mac-address" => [\$client_mac_address, "00:00:00:00:00:00"],
99 "server-domain" => [\$server_domain, ""],
100 "ldap" => [\$ldap_enabled, 1],
101 "ldap-config" => [\$ldap_config, "/etc/ldap/ldap.conf"],
102 "pam-config" => [\$pam_config, "/etc/pam_ldap.conf"],
103 "nss-config" => [\$nss_config, "/etc/libnss-ldap.conf"],
104 "fai-logpath" => [\$fai_logpath, "/var/log/fai/fai.log"],
105 "force-hostname" => [\$client_force_hostname, "false"],
106 },
107 "server" => {
108 "ip" => [\$server_ip, "127.0.0.1"],
109 "port" => [\$server_port, "20081"],
110 "key" => [\$server_key, ""],
111 "timeout" => [\$server_timeout, 10],
112 "key-lifetime" => [\$server_key_lifetime, 600],
113 },
115 );
118 #=== FUNCTIONS = functions =====================================================
120 #=== FUNCTION ================================================================
121 # NAME: check_cmdline_param
122 # PARAMETERS:
123 # RETURNS:
124 # DESCRIPTION:
125 #===============================================================================
126 sub check_cmdline_param () {
127 my $err_config;
128 my $err_counter = 0;
129 if(not defined($cfg_file)) {
130 $cfg_file = "/etc/gosa-si/client.conf";
131 if(! -r $cfg_file) {
132 $err_config = "please specify a config file";
133 $err_counter += 1;
134 }
135 }
136 if( $err_counter > 0 ) {
137 &usage( "", 1 );
138 if( defined( $err_config)) { print STDERR "$err_config\n"}
139 print STDERR "\n";
140 exit( -1 );
141 }
142 }
145 #=== FUNCTION ================================================================
146 # NAME: read_configfile
147 # PARAMETERS: cfg_file - string -
148 # RETURNS:
149 # DESCRIPTION:
150 #===============================================================================
151 sub read_configfile {
152 my ($cfg_file, %cfg_defaults) = @_ ;
153 my $cfg;
154 if( defined( $cfg_file) && ( (-s $cfg_file) > 0 )) {
155 if( -r $cfg_file ) {
156 $cfg = Config::IniFiles->new( -file => $cfg_file );
157 } else {
158 print STDERR "Couldn't read config file!";
159 }
160 } else {
161 $cfg = Config::IniFiles->new() ;
162 }
163 foreach my $section (keys %cfg_defaults) {
164 foreach my $param (keys %{$cfg_defaults{ $section }}) {
165 my $pinfo = $cfg_defaults{ $section }{ $param };
166 ${@$pinfo[ 0 ]} = $cfg->val( $section, $param, @$pinfo[ 1 ] );
167 }
168 }
169 }
172 #=== FUNCTION ================================================================
173 # NAME: check_pid
174 # PARAMETERS:
175 # RETURNS:
176 # DESCRIPTION:
177 #===============================================================================
178 sub check_pid {
179 $pid = -1;
180 # Check, if we are already running
181 if( open(LOCK_FILE, "<$pid_file") ) {
182 $pid = <LOCK_FILE>;
183 if( defined $pid ) {
184 chomp( $pid );
185 if( -f "/proc/$pid/stat" ) {
186 my($stat) = `cat /proc/$pid/stat` =~ m/$pid \((.+)\).*/;
187 if( $0 eq $stat ) {
188 close( LOCK_FILE );
189 exit -1;
190 }
191 }
192 }
193 close( LOCK_FILE );
194 unlink( $pid_file );
195 }
197 # create a syslog msg if it is not to possible to open PID file
198 if (not sysopen(LOCK_FILE, $pid_file, O_WRONLY|O_CREAT|O_EXCL, 0644)) {
199 my($msg) = "Couldn't obtain lockfile '$pid_file' ";
200 if (open(LOCK_FILE, '<', $pid_file)
201 && ($pid = <LOCK_FILE>))
202 {
203 chomp($pid);
204 $msg .= "(PID $pid)\n";
205 } else {
206 $msg .= "(unable to read PID)\n";
207 }
208 if( ! ($foreground) ) {
209 openlog( $0, "cons,pid", "daemon" );
210 syslog( "warning", $msg );
211 closelog();
212 }
213 else {
214 print( STDERR " $msg " );
215 }
216 exit( -1 );
217 }
218 }
221 sub sig_int_handler {
222 my ($signal) = @_;
224 daemon_log("shutting down gosa-si-client", 1);
225 system("kill `ps -C gosa-si-client -o pid=`");
226 }
227 $SIG{INT} = \&sig_int_handler;
230 #=== FUNCTION ================================================================
231 # NAME: logging
232 # PARAMETERS: level - string - default 'info'
233 # msg - string -
234 # facility - string - default 'LOG_DAEMON'
235 # RETURNS:
236 # DESCRIPTION:
237 #===============================================================================
238 sub daemon_log {
239 # log into log_file
240 my( $msg, $level ) = @_;
241 if(not defined $msg) { return }
242 if(not defined $level) { $level = 1 }
243 if(defined $log_file){
244 open(LOG_HANDLE, ">>$log_file");
245 if(not defined open( LOG_HANDLE, ">>$log_file" )) {
246 print STDERR "cannot open $log_file: $!";
247 return }
248 chomp($msg);
249 if($level <= $verbose){
250 my ($seconds, $minutes, $hours, $monthday, $month,
251 $year, $weekday, $yearday, $sommertime) = localtime(time);
252 $hours = $hours < 10 ? $hours = "0".$hours : $hours;
253 $minutes = $minutes < 10 ? $minutes = "0".$minutes : $minutes;
254 $seconds = $seconds < 10 ? $seconds = "0".$seconds : $seconds;
255 my @monthnames = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
256 $month = $monthnames[$month];
257 $monthday = $monthday < 10 ? $monthday = "0".$monthday : $monthday;
258 $year+=1900;
260 my $log_msg = "$month $monthday $hours:$minutes:$seconds $prg $msg\n";
261 print LOG_HANDLE $log_msg;
262 if( $foreground ) {
263 print STDERR $log_msg;
264 }
265 }
266 close( LOG_HANDLE );
267 }
268 }
271 #=== FUNCTION ================================================================
272 # NAME: get_interfaces
273 # PARAMETERS: none
274 # RETURNS: (list of interfaces)
275 # DESCRIPTION: Uses proc fs (/proc/net/dev) to get list of interfaces.
276 #===============================================================================
277 sub get_interfaces {
278 my @result;
279 my $PROC_NET_DEV= ('/proc/net/dev');
281 open(PROC_NET_DEV, "<$PROC_NET_DEV")
282 or die "Could not open $PROC_NET_DEV";
284 my @ifs = <PROC_NET_DEV>;
286 close(PROC_NET_DEV);
288 # Eat first two line
289 shift @ifs;
290 shift @ifs;
292 chomp @ifs;
293 foreach my $line(@ifs) {
294 my $if= (split /:/, $line)[0];
295 $if =~ s/^\s+//;
296 push @result, $if;
297 }
299 return @result;
300 }
302 #=== FUNCTION ================================================================
303 # NAME: get_mac
304 # PARAMETERS: interface name (i.e. eth0)
305 # RETURNS: (mac address)
306 # DESCRIPTION: Uses ioctl to get mac address directly from system.
307 #===============================================================================
308 sub get_mac {
309 my $ifreq= shift;
310 my $result;
311 if ($ifreq && length($ifreq) > 0) {
312 if($ifreq eq "all") {
313 if(defined($server_ip)) {
314 $result = &get_local_mac_for_remote_ip($server_ip);
315 }
316 elsif ($client_mac_address && length($client_mac_address) > 0 && !($client_mac_address eq "00:00:00:00:00:00")){
317 $result = &client_mac_address;
318 }
319 else {
320 $result = "00:00:00:00:00:00";
321 }
322 } else {
323 my $SIOCGIFHWADDR= 0x8927; # man 2 ioctl_list
325 # A configured MAC Address should always override a guessed value
326 if ($client_mac_address and length($client_mac_address) > 0 and not($client_mac_address eq "00:00:00:00:00:00")) {
327 $result= $client_mac_address;
328 }
329 else {
330 socket SOCKET, PF_INET, SOCK_DGRAM, getprotobyname('ip')
331 or die "socket: $!";
333 if(ioctl SOCKET, $SIOCGIFHWADDR, $ifreq) {
334 my ($if, $mac)= unpack 'h36 H12', $ifreq;
336 if (length($mac) > 0) {
337 $mac=~ m/^([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])$/;
338 $mac= sprintf("%s:%s:%s:%s:%s:%s", $1, $2, $3, $4, $5, $6);
339 $result = $mac;
340 }
341 }
342 }
343 }
344 }
345 return $result;
346 }
349 #=== FUNCTION ================================================================
350 # NAME: get_interface_for_ip
351 # PARAMETERS: ip address (i.e. 192.168.0.1)
352 # RETURNS: array: list of interfaces if ip=0.0.0.0, matching interface if found, undef else
353 # DESCRIPTION: Uses proc fs (/proc/net/dev) to get list of interfaces.
354 #===============================================================================
355 sub get_interface_for_ip {
356 my $result;
357 my $ip= shift;
358 if ($ip && length($ip) > 0) {
359 my @ifs= &get_interfaces();
360 if($ip eq "0.0.0.0") {
361 $result = "all";
362 } else {
363 foreach (@ifs) {
364 my $if=$_;
365 if(get_ip($if) eq $ip) {
366 $result = $if;
367 last;
368 }
369 }
370 }
371 }
372 return $result;
373 }
376 #=== FUNCTION ================================================================
377 # NAME: get_ip
378 # PARAMETERS: interface name (i.e. eth0)
379 # RETURNS: (ip address)
380 # DESCRIPTION: Uses ioctl to get ip address directly from system.
381 #===============================================================================
382 sub get_ip {
383 my $ifreq= shift;
384 my $result= "";
385 my $SIOCGIFADDR= 0x8915; # man 2 ioctl_list
386 my $proto= getprotobyname('ip');
388 socket SOCKET, PF_INET, SOCK_DGRAM, $proto
389 or die "socket: $!";
391 if(ioctl SOCKET, $SIOCGIFADDR, $ifreq) {
392 my ($if, $sin) = unpack 'a16 a16', $ifreq;
393 my ($port, $addr) = sockaddr_in $sin;
394 my $ip = inet_ntoa $addr;
396 if ($ip && length($ip) > 0) {
397 $result = $ip;
398 }
399 }
401 return $result;
402 }
405 #=== FUNCTION ================================================================
406 # NAME: get_local_mac_for_remote_ip
407 # PARAMETERS: none (takes server_ip from global variable)
408 # RETURNS: (ip address from interface that is used for communication)
409 # DESCRIPTION: Uses ioctl to get routing table from system, checks which entry
410 # matches (defaultroute last).
411 #===============================================================================
412 sub get_local_mac_for_remote_ip {
413 my $server_ip= shift;
414 my $result= "00:00:00:00:00:00";
416 if($server_ip =~ /^(\d\d?\d?\.){3}\d\d?\d?$/) {
417 my $PROC_NET_ROUTE= ('/proc/net/route');
419 open(PROC_NET_ROUTE, "<$PROC_NET_ROUTE")
420 or die "Could not open $PROC_NET_ROUTE";
422 my @ifs = <PROC_NET_ROUTE>;
424 close(PROC_NET_ROUTE);
426 # Eat header line
427 shift @ifs;
428 chomp @ifs;
429 foreach my $line(@ifs) {
430 my ($Iface,$Destination,$Gateway,$Flags,$RefCnt,$Use,$Metric,$Mask,$MTU,$Window,$IRTT)=split(/\s/, $line);
431 my $destination;
432 my $mask;
433 my ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Destination);
434 $destination= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
435 ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Mask);
436 $mask= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
437 if(new NetAddr::IP($server_ip)->within(new NetAddr::IP($destination, $mask))) {
438 # destination matches route, save mac and exit
439 $result= &get_mac($Iface);
440 last;
441 }
442 }
443 } else {
444 daemon_log("get_local_mac_for_remote_ip was called with a non-ip parameter: $server_ip", 1);
445 }
446 return $result;
447 }
449 sub get_local_ip_for_remote_ip {
450 my $server_ip= shift;
451 my $result="0.0.0.0";
453 if($server_ip =~ /^(\d\d?\d?\.){3}\d\d?\d?$/) {
454 if($server_ip eq "127.0.0.1") {
455 $result="127.0.0.1";
456 } else {
457 my $PROC_NET_ROUTE= ('/proc/net/route');
459 open(PROC_NET_ROUTE, "<$PROC_NET_ROUTE")
460 or die "Could not open $PROC_NET_ROUTE";
462 my @ifs = <PROC_NET_ROUTE>;
464 close(PROC_NET_ROUTE);
466 # Eat header line
467 shift @ifs;
468 chomp @ifs;
469 foreach my $line(@ifs) {
470 my ($Iface,$Destination,$Gateway,$Flags,$RefCnt,$Use,$Metric,$Mask,$MTU,$Window,$IRTT)=split(/\s/, $line);
471 my $destination;
472 my $mask;
473 my ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Destination);
474 $destination= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
475 ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Mask);
476 $mask= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
477 if(new NetAddr::IP($server_ip)->within(new NetAddr::IP($destination, $mask))) {
478 # destination matches route, save mac and exit
479 $result= &get_ip($Iface);
480 last;
481 }
482 }
483 }
484 } else {
485 daemon_log("get_local_ip_for_remote_ip was called with a non-ip parameter: $server_ip", 1);
486 }
487 return $result;
488 }
491 sub generate_hw_digest {
492 my $hw_data;
493 foreach my $line (split /\n/, `cat /proc/bus/pci/devices`) {
494 $hw_data.= sprintf "%s", $line =~ /[^\s]+\s([^\s]+)\s.*/;
495 }
496 return(md5_base64($hw_data));
497 }
500 sub create_passwd {
501 my $new_passwd = "";
502 for(my $i=0; $i<31; $i++) {
503 $new_passwd .= ("a".."z","A".."Z",0..9)[int(rand(62))]
504 }
506 return $new_passwd;
507 }
510 sub create_ciphering {
511 my ($passwd) = @_;
512 if((!defined($passwd)) || length($passwd)==0) {
513 $passwd = "";
514 }
515 $passwd = substr(md5_hex("$passwd") x 32, 0, 32);
516 my $iv = substr(md5_hex('GONICUS GmbH'),0, 16);
517 my $my_cipher = Crypt::Rijndael->new($passwd , Crypt::Rijndael::MODE_CBC());
518 $my_cipher->set_iv($iv);
519 return $my_cipher;
520 }
523 sub encrypt_msg {
524 my ($msg, $key) = @_;
525 my $my_cipher = &create_ciphering($key);
526 my $len;
527 {
528 use bytes;
529 $len= 16-length($msg)%16;
530 }
531 $msg = "\0"x($len).$msg;
532 $msg = $my_cipher->encrypt($msg);
533 chomp($msg = &encode_base64($msg));
534 # there are no newlines allowed inside msg
535 $msg=~ s/\n//g;
536 return $msg;
537 }
540 sub decrypt_msg {
542 my ($msg, $key) = @_ ;
543 $msg = &decode_base64($msg);
544 my $my_cipher = &create_ciphering($key);
545 $msg = $my_cipher->decrypt($msg);
546 $msg =~ s/\0*//g;
547 return $msg;
548 }
551 sub get_server_addresses {
552 my $domain= shift;
553 my @result;
555 my $error = 0;
556 my $res = Net::DNS::Resolver->new;
557 my $query = $res->send("_gosa-si._tcp.".$domain, "SRV");
558 my @hits;
560 if ($query) {
561 foreach my $rr ($query->answer) {
562 push(@hits, $rr->target.":".$rr->port);
563 }
564 }
565 else {
566 #warn "query failed: ", $res->errorstring, "\n";
567 $error++;
568 }
570 if( $error == 0 ) {
571 foreach my $hit (@hits) {
572 my ($hit_name, $hit_port) = split(/:/, $hit);
573 chomp($hit_name);
574 chomp($hit_port);
576 my $address_query = $res->send($hit_name);
577 if( 1 == length($address_query->answer) ) {
578 foreach my $rr ($address_query->answer) {
579 push(@result, $rr->address.":".$hit_port);
580 }
581 }
582 }
583 }
585 return @result;
586 }
589 #=== FUNCTION ================================================================
590 # NAME: send_msg_hash_to_target
591 # PARAMETERS: msg_hash - hash - xml_hash created with function create_xml_hash
592 # PeerAddr string - socket address to send msg
593 # PeerPort string - socket port, if not included in socket address
594 # RETURNS: nothing
595 # DESCRIPTION: ????
596 #===============================================================================
597 sub send_msg_hash_to_target {
598 my ($msg_hash, $address, $encrypt_key) = @_ ;
599 my $msg = &create_xml_string($msg_hash);
600 my $header = @{$msg_hash->{'header'}}[0];
601 my $error = &send_msg_to_target($msg, $address, $encrypt_key, $header);
603 return $error;
604 }
607 sub send_msg_to_target {
608 my ($msg, $address, $encrypt_key, $msg_header) = @_ ;
609 my $error = 0;
611 if( $msg_header ) { $msg_header = "'$msg_header'-"; }
612 else { $msg_header = ""; }
614 # encrypt xml msg
615 my $crypted_msg = &encrypt_msg($msg, $encrypt_key);
617 # xxxxxxxxxxxxxx
621 # opensocket
622 my $socket = &open_socket($address);
623 if( !$socket ) {
624 daemon_log("ERROR: cannot send ".$msg_header."msg to $address , host not reachable", 1);
625 $error++;
626 }
628 # send xml msg
629 if( $error == 0 ) {
630 print $socket $crypted_msg."\n";
631 daemon_log("INFO: send ".$msg_header."msg to $address", 5);
632 daemon_log("DEBUG: message:\n$msg", 8);
633 }
635 # close socket in any case
636 if( $socket ) {
637 close $socket;
638 }
640 return $error;
641 }
644 sub write_to_file {
645 my ($string, $file) = @_;
646 my $error = 0;
648 if( not defined $file || not -f $file ) {
649 &main::daemon_log("ERROR: $prg: check '-f file' failed: $file", 1);
650 $error++;
651 }
652 if( not defined $string || 0 == length($string)) {
653 &main::daemon_log("ERROR: $prg: empty string to write to file '$file'", 1);
654 $error++;
655 }
657 if( $error == 0 ) {
659 chomp($string);
661 if (open(FILE, ">> $file")){
662 print FILE $string."\n";
663 close(FILE);
664 }
665 }
667 return;
668 }
671 sub open_socket {
672 my ($PeerAddr, $PeerPort) = @_ ;
673 if(defined($PeerPort)){
674 $PeerAddr = $PeerAddr.":".$PeerPort;
675 }
676 my $socket;
677 $socket = new IO::Socket::INET(PeerAddr => $PeerAddr,
678 Porto => "tcp",
679 Type => SOCK_STREAM,
680 Timeout => 5,
681 );
682 if(not defined $socket) {
683 return;
684 }
685 &daemon_log("open_socket: $PeerAddr", 7);
686 return $socket;
687 }
690 #=== FUNCTION ================================================================
691 # NAME: register_at_server
692 # PARAMETERS:
693 # RETURNS:
694 # DESCRIPTION:
695 #===============================================================================
696 sub register_at_gosa_si_server {
697 my ($kernel) = $_[KERNEL];
698 my $try_to_register = 0;
700 # if client is already registered, stop registration process
701 if ($REGISTERED) {
702 $kernel->delay('register_at_gosa_si_server');
704 # client is not registered, start registration process
705 } else {
706 # clear all other triggered events and wait till registration was successful
707 $kernel->delay('trigger_new_key');
709 # create new passwd and ciphering object for client-server communication
710 $server_key = &create_passwd();
712 my $events = join( ",", keys %{$event_hash} );
713 while(1) {
714 # fetch first gosa-si-server from @servers
715 my $server = shift(@servers);
717 # append shifted gosa-si-server at the end of @servers, so looking for servers never stop if
718 # a registration never occured
719 push( @servers, $server );
721 # Check if our ip is resolvable - if not: don't try to register
722 my $ip= &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
723 my $dnsname= gethostbyaddr(inet_aton($ip), AF_INET);
724 if(!defined($dnsname)) {
725 &write_to_file("goto-error-dns:$ip", $fai_logpath);
726 exit(1);
727 }
729 # create registration msg
730 my $local_ip = &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
731 my $local_mac = &get_local_mac_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
732 my $register_hash = &create_xml_hash("here_i_am", $local_ip.":".$client_port, $server);
733 &add_content2xml_hash($register_hash, "new_passwd", $server_key);
734 &add_content2xml_hash($register_hash, "mac_address", $local_mac);
735 &add_content2xml_hash($register_hash, "events", $events);
736 &add_content2xml_hash($register_hash, "gotoHardwareChecksum", $gotoHardwareChecksum);
738 # Add $HOSTNAME from ENV if force-hostname is set
739 if( defined($client_force_hostname) && $client_force_hostname eq "true") {
740 if(defined($ENV{HOSTNAME}) && length($ENV{HOSTNAME}) >0 ) {
741 &add_content2xml_hash($register_hash, "force-hostname", $ENV{HOSTNAME});
742 } else {
743 &main::daemon_log("force-hostname was set to true, but no \$HOSTNAME was found in Environment!",0);
744 }
745 }
747 # send xml hash to server with general server passwd
748 my $res = &send_msg_hash_to_target($register_hash, $server, $default_server_key);
750 if( $try_to_register >= @servers ) { last; }
752 # if delivery of registration msg succeed
753 if($res == 0) {
754 # reset try_to_register
755 $try_to_register = 0;
757 # Set fixed client address and mac address
758 $client_ip= &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
759 $client_address= "$client_ip:$client_port";
760 $client_mac_address = $local_mac;
761 $client_dnsname = $dnsname;
762 last;
764 # delivery of registration msg failed
765 } else {
766 $try_to_register++;
767 # wait 1 sec until trying to register again
768 sleep(1);
769 next;
770 }
772 } # end of while
774 # one circle through all servers finished and no registration succeed
775 if ( $try_to_register >= @servers ) {
776 &write_to_file("gosa-si-no-server-available", $fai_logpath);
777 $kernel->delay_set('register_at_gosa_si_server', $delay_set_time);
779 # delivery of registraion msg succeed, waiting for server response
780 } else {
781 daemon_log("INFO: waiting for msg 'register_at_gosa_si_server'",5);
782 $kernel->delay_set('register_at_gosa_si_server', $delay_set_time);
783 # clear old settings and set it again
784 $kernel->delay('trigger_new_key');
785 $kernel->delay_set('trigger_new_key', $server_key_lifetime);
786 }
788 }
789 return;
790 }
793 sub check_key_and_xml_validity {
794 my ($crypted_msg, $module_key) = @_;
796 my $msg;
797 my $msg_hash;
798 eval{
799 $msg = &decrypt_msg($crypted_msg, $module_key);
800 &main::daemon_log("decrypted_msg: \n$msg", 8);
802 $msg_hash = $xml->XMLin($msg, ForceArray=>1);
804 ##############
805 # check header
806 my $header_l = $msg_hash->{'header'};
807 if( 1 != @{$header_l} ) {
808 die 'no or more headers specified';
809 }
810 my $header = @{$header_l}[0];
811 if( 0 == length $header) {
812 die 'header has length 0';
813 }
815 ##############
816 # check source
817 my $source_l = $msg_hash->{'source'};
818 if( 1 != @{$source_l} ) {
819 die 'no or more than 1 sources specified';
820 }
821 my $source = @{$source_l}[0];
822 if( 0 == length $source) {
823 die 'source has length 0';
824 }
825 unless( $source =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ) {
826 die "source '$source' is neither a complete ip-address with port nor 'GOSA'";
827 }
829 ##############
830 # check target
831 my $target_l = $msg_hash->{'target'};
832 if( 1 != @{$target_l} ) {
833 die 'no or more than 1 targets specified ';
834 }
835 my $target = @{$target_l}[0];
836 if( 0 == length $target) {
837 die 'target has length 0 ';
838 }
839 unless( $target =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ){
840 die "source is neither a complete ip-address with port nor 'GOSA'";
841 }
842 };
843 if($@) {
844 &main::daemon_log("WARNING: do not understand the message or msg is not gosa-si envelope conform:", 5);
845 &main::daemon_log("$@", 8);
846 $msg = undef;
847 $msg_hash = undef;
848 }
850 return ($msg, $msg_hash);
851 }
854 sub check_outgoing_xml_validity {
855 my ($msg) = @_;
857 my $msg_hash;
858 eval{
859 $msg_hash = $xml->XMLin($msg, ForceArray=>1);
861 ##############
862 # check header
863 my $header_l = $msg_hash->{'header'};
864 if( 1 != @{$header_l} ) {
865 die 'no or more than one headers specified';
866 }
867 my $header = @{$header_l}[0];
868 if( 0 == length $header) {
869 die 'header has length 0';
870 }
872 ##############
873 # check source
874 my $source_l = $msg_hash->{'source'};
875 if( 1 != @{$source_l} ) {
876 die 'no or more than 1 sources specified';
877 }
878 my $source = @{$source_l}[0];
879 if( 0 == length $source) {
880 die 'source has length 0';
881 }
882 unless( $source =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ||
883 $source =~ /^GOSA$/i ) {
884 die "source '$source' is neither a complete ip-address with port";
885 }
887 ##############
888 # check target
889 my $target_l = $msg_hash->{'target'};
890 if( 1 != @{$target_l} ) {
891 die "no or more than one targets specified";
892 }
893 foreach my $target (@$target_l) {
894 if( 0 == length $target) {
895 die "target has length 0";
896 }
897 unless( $target =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ) {
898 die "target '$target' is not a complete ip-address with port or a valid target name";
899 }
900 }
901 };
902 if($@) {
903 daemon_log("WARNING: outgoing msg is not gosa-si envelope conform", 5);
904 daemon_log("$@ $msg", 8);
905 $msg_hash = undef;
906 }
907 return ($msg_hash);
908 }
911 sub import_events {
913 if (not -e $event_dir) {
914 daemon_log("ERROR: cannot find directory or directory is not readable: $event_dir", 1);
915 }
916 opendir (DIR, $event_dir) or die "ERROR while loading gosa-si-events from directory $event_dir : $!\n";
918 while (defined (my $event = readdir (DIR))) {
919 if( $event eq "." || $event eq ".." ) { next; }
920 daemon_log("INFO: found event module: $event", 5);
921 eval{ require $event; };
922 if( $@ ) {
923 daemon_log("ERROR: import of event module '$event' failed", 1);
924 daemon_log("$@", 1);
925 next;
926 }
928 $event =~ /(\S*?).pm$/;
929 my $event_module = $1;
930 my $events_l = eval( $1."::get_events()") ;
931 foreach my $event_name (@{$events_l}) {
932 $event_hash->{$event_name} = $event_module;
933 }
935 }
937 my @all_events = keys %$event_hash;
938 my $all_events_string = join(", ", @all_events);
940 daemon_log("INFO: imported events: $all_events_string", 5);
941 }
943 sub trigger_new_key {
944 my ($kernel) = $_[KERNEL] ;
946 my $msg = "<xml><header>new_key</header><source>$client_address</source><target>$client_address</target></xml>";
947 &send_msg_to_target($msg, $client_address, $server_key, 'new_key');
949 $kernel->delay_set('trigger_new_key', $server_key_lifetime);
950 }
953 sub trigger_logged_in_users_report {
954 my ($kernel) = $_[KERNEL] ;
956 # just do if client is registered already
957 if( $REGISTERED ) {
958 my $result = qx(/usr/bin/users);
959 my @logged_in_user_list;
960 if( defined $result ) {
961 chomp($result);
962 @logged_in_user_list = split(/\s/, $result);
963 }
965 system("echo 'CURRENTLY_LOGGED_IN ".join(" ", @logged_in_user_list)."' > /var/run/gosa-si-client.socket");
966 $kernel->delay_set('trigger_logged_in_users_report', $trigger_logged_in_users_report_delay);
967 } else {
968 # try it in 10 sec again
969 $kernel->delay_set('trigger_logged_in_users_report', 10);
970 }
971 }
974 #sub generic_file_reset {
975 # my ( $heap, $wheel_id ) = @_[ HEAP, ARG0 ];
976 #
977 # my $service = $heap->{services}->{$wheel_id};
978 # daemon_log("INFO: '$service' watching reset", 5);
979 # return;
980 #}
982 sub generic_file_error {
983 my ( $heap, $operation, $errno, $error_string, $wheel_id ) =
984 @_[ HEAP, ARG0, ARG1, ARG2, ARG3 ];
986 my $service = $heap->{services}->{$wheel_id};
987 daemon_log("ERROR: '$service' watcher $operation error $errno: $error_string", 1);
988 daemon_log("ERROR: shutting down '$service' file watcher", 1);
990 delete $heap->{services}->{$wheel_id};
991 delete $heap->{watchers}->{$wheel_id};
992 return;
993 }
996 sub fifo_got_record {
997 my $file_record = $_[ARG0];
998 my $header;
999 my $content = "";
1000 daemon_log("DEBUG: fifo got record: $file_record", 7);
1002 $file_record =~ /^(\S+)[ ]?([\s\S]+)?$/;
1003 if( defined $1 ) {
1004 $header = $1;
1005 } else {
1006 return;
1007 }
1009 if( defined $2 ) {
1010 $content = $2;
1011 }
1013 my $clmsg_hash = &create_xml_hash("CLMSG_$header", $client_address, $server_address, $content);
1014 &add_content2xml_hash($clmsg_hash, "macaddress", $client_mac_address);
1015 my $clmsg = &create_xml_string($clmsg_hash);
1016 &send_msg_to_target($clmsg, $server_address, $server_key, "CLMSG_$header");
1018 # if installation finished, save all log files
1019 if ($file_record eq "TASKBEGIN finish") {
1020 &save_fai_log($fai_log_dir);
1021 }
1023 return;
1024 }
1027 sub save_fai_log {
1028 my ($fai_log_dir) = @_ ;
1029 my $FAI_DIR;
1031 opendir($FAI_DIR, $fai_log_dir);
1032 if (not defined $FAI_DIR) {
1033 daemon_log("ERROR: can not open directory $fai_log_dir: $!", 1);
1034 return;
1035 }
1037 my @log_files = readdir($FAI_DIR);
1038 closedir($FAI_DIR);
1039 my @log_list;
1041 foreach my $log_file (@log_files) {
1042 if( $log_file eq "." || $log_file eq ".." ) { next; }
1043 my $log = "log_file:$log_file:";
1044 $log_file = File::Spec->catfile( $fai_log_dir, $log_file );
1045 open(my $FILE, "<$log_file");
1046 if (not defined $FILE ) {
1047 daemon_log("ERROR: can not open '$log_file': $!", 1);
1048 next;
1049 }
1050 my @lines = <$FILE>;
1051 my $log_string = join("", @lines);
1052 $log .= &encode_base64($log_string);
1053 push(@log_list, $log);
1054 close ($FILE);
1055 }
1057 my $all_log_string = join("\n", @log_list);
1058 my $msg_hash = &create_xml_hash("CLMSG_save_fai_log", $client_address, $server_address, $all_log_string);
1059 &add_content2xml_hash($msg_hash, "macaddress", $client_mac_address);
1060 my $msg = &create_xml_string($msg_hash);
1061 &send_msg_to_target($msg, $server_address, $server_key, "CLMSG_save_fai_log");
1063 }
1066 sub _start {
1067 my ($kernel, $heap) = @_[KERNEL, HEAP];
1068 $kernel->alias_set('client_session');
1070 # force a registration at a gosa-si-server
1071 $kernel->yield('register_at_gosa_si_server');
1073 # install all file watcher defined
1074 while( my($name, $file) = each %files_to_watch ) {
1075 my $watcher = POE::Wheel::FollowTail->new(
1076 Filename => $file,
1077 InputEvent => $name."_record",
1078 # ResetEvent => "file_reset",
1079 ErrorEvent => "file_error",
1080 );
1081 # $heap->{tail} = POE::Wheel::Run->new(
1082 # Program => [ "/usr/bin/tail", "-f", $file ],
1083 # StdoutEvent => $file_name."_record",
1084 # );
1085 $heap->{services}->{ $watcher->ID } = $name;
1086 $heap->{watchers}->{ $watcher->ID } = $watcher;
1087 }
1088 $kernel->yield('trigger_logged_in_users_report');
1089 }
1092 sub _default {
1093 daemon_log("ERROR: can not handle incoming msg with header '$_[ARG0]'", 1);
1094 return;
1095 }
1098 sub server_input {
1099 my ($kernel, $heap, $input, $wheel) = @_[KERNEL, HEAP, ARG0, ARG1];
1100 my $remote_ip = $heap->{'remote_ip'},
1101 my $error = 0;
1102 my $answer;
1105 daemon_log("INFO: Incoming msg from '$remote_ip'", 5);
1106 daemon_log("DEBUG: Incoming msg:\n$input\n", 8);
1108 my ($msg, $msg_hash) = &check_key_and_xml_validity($input, $server_key);
1109 if( (!$msg) || (!$msg_hash) ) {
1110 daemon_log("WARNING: Deciphering of incoming msg failed", 3);
1111 if($server_address =~ /$remote_ip/) {
1112 # got a msg from gosa-si-server which can not be decrypted, may the secrete not up-to-date
1113 # cause a reregistering with a new secrete handshake
1114 daemon_log("WARNING: Message from gosa-si-server could not be understood, cause reregistering at server", 3);
1116 # if client is alread in a registration process, that means not registered, do nothing
1117 # if not, cause re-registration
1118 if (not $REGISTERED) {
1119 &daemon_log("WARNING: gosa-si-client is already in a registration process so ignore this message", 3);
1120 } else {
1121 $REGISTERED = 0;
1122 $kernel->post('client_session', 'register_at_gosa_si_server');
1123 }
1124 }
1125 $error++;
1126 }
1129 ######################
1130 # process incoming msg
1131 if( $error == 0 ) {
1132 my $header = @{$msg_hash->{header}}[0];
1133 my $source = @{$msg_hash->{source}}[0];
1135 if( exists $event_hash->{$header} ) {
1137 # a event exists with the header as name
1138 daemon_log("DEBUG: found event '$header' at event-module '".$event_hash->{$header}."'", 7);
1139 no strict 'refs';
1140 $answer = &{$event_hash->{$header}."::$header"}($msg, $msg_hash);
1141 }
1142 else {
1143 daemon_log("WARNING: no event '$header' found in event modules under $event_dir", 1);
1144 }
1145 }
1147 ########
1148 # answer
1149 if( $answer ) {
1151 #check gosa-si envelope validity
1152 my $answer_hash = &check_outgoing_xml_validity($answer);
1154 if( $answer_hash ) {
1155 # answer is valid
1157 # preprocessing
1158 if( $answer =~ "<header>registered</header>") {
1159 # set registered flag to true to stop sending further registered msgs
1160 $REGISTERED = 1;
1161 }
1162 else {
1163 $answer =~ /<header>(\S+)<\/header>/;
1164 &send_msg_to_target($answer, $server_address, $server_key, $1);
1165 }
1167 # postprocessing
1168 if( $answer =~ "<header>new_key</header>") {
1169 # set new key to global variable
1170 $answer =~ /<new_key>(\S*?)<\/new_key>/;
1171 my $new_key = $1;
1172 $server_key = $new_key;
1173 }
1174 }
1176 }
1178 return;
1179 }
1182 #==== MAIN = main ==============================================================
1183 # parse commandline options
1184 Getopt::Long::Configure( "bundling" );
1185 GetOptions("h|help" => \&usage,
1186 "c|config=s" => \$cfg_file,
1187 "f|foreground" => \$foreground,
1188 "v|verbose+" => \$verbose,
1189 );
1191 # read and set config parameters
1192 &check_cmdline_param ;
1193 &read_configfile($cfg_file, %cfg_defaults);
1194 &check_pid;
1197 # forward error messages to logfile
1198 if ( ! $foreground ) {
1199 open( STDIN, '+>/dev/null' );
1200 open( STDOUT, '+>&STDIN' );
1201 open( STDERR, '+>&STDIN' );
1202 }
1204 # Just fork, if we are not in foreground mode
1205 if( ! $foreground ) {
1206 chdir '/' or die "Can't chdir to /: $!";
1207 $pid = fork;
1208 setsid or die "Can't start a new session: $!";
1209 umask 0;
1210 }
1211 else {
1212 $pid = $$;
1213 }
1215 # Do something useful - put our PID into the pid_file
1216 if( 0 != $pid ) {
1217 open( LOCK_FILE, ">$pid_file" );
1218 print LOCK_FILE "$pid\n";
1219 close( LOCK_FILE );
1220 if( !$foreground ) {
1221 exit( 0 )
1222 };
1223 }
1225 daemon_log(" ", 1);
1226 daemon_log("$prg started!", 1);
1228 # delete old DBsqlite lock files
1229 system('rm -f /tmp/gosa_si_lock*gosa-si-client*');
1231 # detect ip and mac address and complete host address
1232 $client_address = $client_ip.":".$client_port;
1233 my $network_interface= &get_interface_for_ip($client_ip);
1234 $client_mac_address= &get_mac($network_interface);
1235 daemon_log("gosa-si-client ip address detected: $client_ip", 1);
1236 daemon_log("gosa-si-client mac address detected: $client_mac_address", 1);
1239 # import events
1240 &import_events();
1243 # compute hardware checksum
1244 $gotoHardwareChecksum= &generate_hw_digest();
1245 daemon_log("gosa-si-client gotoHardwareChecksum detected: $gotoHardwareChecksum", 1);
1248 # create socket for incoming xml messages
1249 POE::Component::Server::TCP->new(
1250 Alias => 'gosa-si-client',
1251 Port => $client_port,
1252 ClientInput => \&server_input,
1253 );
1254 daemon_log("start socket for incoming xml messages at port '$client_port' ", 1);
1257 # prepare variables
1258 if( inet_aton($server_ip) ){ $server_ip = inet_ntoa(inet_aton($server_ip)); }
1259 ############################################################
1260 # to change
1261 if( $server_ip eq "127.0.1.1" ) { $server_ip = "127.0.0.1" }
1262 ############################################################
1263 if (defined $server_ip && defined $server_port) {
1264 $server_address = $server_ip.":".$server_port;
1265 }
1266 $xml = new XML::Simple();
1267 $default_server_key = $server_key;
1270 # add gosa-si-server address from config file at first position of server list
1271 my $server_check_cfg = Config::IniFiles->new( -file => $cfg_file );
1272 my $server_check = (defined($server_check_cfg))?$server_check_cfg->val( "server", "ip"):undef;
1273 if( defined $server_check ) {
1274 unshift(@servers, $server_address);
1275 my $servers_string = join(", ", @servers);
1276 daemon_log("INFO: found servers in configuration file: $servers_string", 5);
1277 } else {
1278 my @tmp_servers;
1279 if ( !$server_domain) {
1280 # Try our DNS Searchlist
1281 for my $domain(get_dns_domains()) {
1282 chomp($domain);
1283 my @tmp_domains= &get_server_addresses($domain);
1284 if(@tmp_domains) {
1285 for my $tmp_server(@tmp_domains) {
1286 push @tmp_servers, $tmp_server;
1287 }
1288 }
1289 }
1290 if(@tmp_servers && length(@tmp_servers)==0) {
1291 daemon_log("ERROR: please specify a gosa-si-server address or a domain in config file", 1);
1292 kill 2, $$;
1293 }
1294 } else {
1295 @tmp_servers = &get_server_addresses($server_domain);
1296 if( 0 == @tmp_servers ) {
1297 daemon_log("ERROR: no gosa-si-server found in DNS for domain '$server_domain'",1);
1298 daemon_log("ERROR: please specify a gosa-si-server address or a domain in config file", 1);
1299 kill 2, $$;
1300 }
1301 }
1303 foreach my $server (@tmp_servers) {
1304 unshift(@servers, $server);
1305 }
1306 my $servers_string = join(", ", @servers);
1307 daemon_log("INFO: found servers in DNS: $servers_string", 5);
1308 }
1311 # open fifo for non-gosa-si-client-msgs to gosa-si-server
1312 POSIX::mkfifo("$gosa_si_client_fifo", "0600");
1315 POE::Session->create(
1316 inline_states => {
1317 _start => \&_start,
1318 _default => \&_default,
1319 register_at_gosa_si_server => \®ister_at_gosa_si_server,
1321 # trigger periodical tasks
1322 trigger_new_key => \&trigger_new_key,
1323 trigger_logged_in_users_report => \&trigger_logged_in_users_report,
1325 # handle records from each defined file differently
1326 fifo_record => \&fifo_got_record,
1328 # handle file resets and errors the same way for each file
1329 file_reset => \&generic_file_reset,
1330 file_error => \&generic_file_error,
1331 }
1332 );
1334 POE::Kernel->run();
1335 exit;