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_timeout, $server_domain, $server_key_lifetime);
53 my ($client_port, $ldap_enabled, $ldap_config, $pam_config, $nss_config);
54 my $xml;
55 my $event_hash;
56 my $default_server_key;
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 $global_kernel;
65 our $cfg_file;
66 our $opts_file;
67 our $server_address;
68 our $client_address;
69 our $client_ip;
70 our $client_mac_address;
71 our $client_dnsname;
72 our $client_force_hostname;
73 our $server_key;
75 # default variables
76 our $REGISTERED = 0;
78 # path to fifo for non-gosa-si-client messages to gosa-si-server
79 $gosa_si_client_fifo = "/var/run/gosa-si-client.socket";
80 %files_to_watch = (fifo => $gosa_si_client_fifo);
82 # in function register_at_gosa_si_server, after which period of seconds a new registration should be tried if a registration was
83 # not successful until now
84 my $delay_set_time = 10;
85 our $prg= basename($0);
87 # all x seconds the client reports logged_in users to gosa-si-server
88 my $trigger_logged_in_users_report_delay = 600;
90 # directory where all log files from installation are stored
91 my $fai_log_dir = "/tmp/fai";
93 %cfg_defaults = (
94 "general" =>
95 {"log-file" => [\$log_file, "/var/run/".$prg.".log"],
96 "pid-file" => [\$pid_file, "/var/run/".$prg.".pid"],
97 "opts-file" => [\$opts_file, "/var/run/".$prg.".opts"],
98 },
99 "client" =>
100 {"port" => [\$client_port, "20083"],
101 "ip" => [\$client_ip, "0.0.0.0"],
102 "mac-address" => [\$client_mac_address, "00:00:00:00:00:00"],
103 "server-domain" => [\$server_domain, ""],
104 "ldap" => [\$ldap_enabled, 1],
105 "ldap-config" => [\$ldap_config, "/etc/ldap/ldap.conf"],
106 "pam-config" => [\$pam_config, "/etc/pam_ldap.conf"],
107 "nss-config" => [\$nss_config, "/etc/libnss-ldap.conf"],
108 "fai-logpath" => [\$fai_logpath, "/var/log/fai/fai.log"],
109 "force-hostname" => [\$client_force_hostname, "false"],
110 },
111 "server" => {
112 "ip" => [\$server_ip, "127.0.0.1"],
113 "port" => [\$server_port, "20081"],
114 "key" => [\$server_key, ""],
115 "timeout" => [\$server_timeout, 10],
116 "key-lifetime" => [\$server_key_lifetime, 600],
117 },
119 );
122 #=== FUNCTIONS = functions =====================================================
124 #=== FUNCTION ================================================================
125 # NAME: check_cmdline_param
126 # PARAMETERS:
127 # RETURNS:
128 # DESCRIPTION:
129 #===============================================================================
130 sub check_cmdline_param () {
131 my $err_config;
132 my $err_counter = 0;
133 if(not defined($cfg_file)) {
134 $cfg_file = "/etc/gosa-si/client.conf";
135 if(! -r $cfg_file) {
136 $err_config = "please specify a config file";
137 $err_counter += 1;
138 }
139 }
140 if( $err_counter > 0 ) {
141 &usage( "", 1 );
142 if( defined( $err_config)) { print STDERR "$err_config\n"}
143 print STDERR "\n";
144 exit( -1 );
145 }
146 }
149 #=== FUNCTION ================================================================
150 # NAME: read_configfile
151 # PARAMETERS: cfg_file - string -
152 # RETURNS:
153 # DESCRIPTION:
154 #===============================================================================
155 sub read_configfile {
156 my ($cfg_file, %cfg_defaults) = @_ ;
157 my $cfg;
158 if( defined( $cfg_file) && ( (-s $cfg_file) > 0 )) {
159 if( -r $cfg_file ) {
160 $cfg = Config::IniFiles->new( -file => $cfg_file );
161 } else {
162 print STDERR "Couldn't read config file!";
163 }
164 } else {
165 $cfg = Config::IniFiles->new() ;
166 }
167 foreach my $section (keys %cfg_defaults) {
168 foreach my $param (keys %{$cfg_defaults{ $section }}) {
169 my $pinfo = $cfg_defaults{ $section }{ $param };
170 ${@$pinfo[ 0 ]} = $cfg->val( $section, $param, @$pinfo[ 1 ] );
171 }
172 }
173 }
176 #=== FUNCTION ================================================================
177 # NAME: check_pid
178 # PARAMETERS:
179 # RETURNS:
180 # DESCRIPTION:
181 #===============================================================================
182 sub check_pid {
183 $pid = -1;
184 # Check, if we are already running
185 if( open(LOCK_FILE, "<$pid_file") ) {
186 $pid = <LOCK_FILE>;
187 if( defined $pid ) {
188 chomp( $pid );
189 if( -f "/proc/$pid/stat" ) {
190 my($stat) = `cat /proc/$pid/stat` =~ m/$pid \((.+)\).*/;
191 if( $0 eq $stat ) {
192 close( LOCK_FILE );
193 exit -1;
194 }
195 }
196 }
197 close( LOCK_FILE );
198 unlink( $pid_file );
199 }
201 # create a syslog msg if it is not to possible to open PID file
202 if (not sysopen(LOCK_FILE, $pid_file, O_WRONLY|O_CREAT|O_EXCL, 0644)) {
203 my($msg) = "Couldn't obtain lockfile '$pid_file' ";
204 if (open(LOCK_FILE, '<', $pid_file)
205 && ($pid = <LOCK_FILE>))
206 {
207 chomp($pid);
208 $msg .= "(PID $pid)\n";
209 } else {
210 $msg .= "(unable to read PID)\n";
211 }
212 if( ! ($foreground) ) {
213 openlog( $0, "cons,pid", "daemon" );
214 syslog( "warning", $msg );
215 closelog();
216 }
217 else {
218 print( STDERR " $msg " );
219 }
220 exit( -1 );
221 }
222 }
225 sub sig_int_handler {
226 my ($signal) = @_;
228 daemon_log("shutting down gosa-si-client", 1);
229 system("kill `ps -C gosa-si-client -o pid=`");
230 }
231 $SIG{INT} = \&sig_int_handler;
234 #=== FUNCTION ================================================================
235 # NAME: logging
236 # PARAMETERS: level - string - default 'info'
237 # msg - string -
238 # facility - string - default 'LOG_DAEMON'
239 # RETURNS:
240 # DESCRIPTION:
241 #===============================================================================
242 sub daemon_log {
243 # log into log_file
244 my( $msg, $level ) = @_;
245 if(not defined $msg) { return }
246 if(not defined $level) { $level = 1 }
247 if(defined $log_file){
248 open(LOG_HANDLE, ">>$log_file");
249 chmod 0600, $log_file;
250 if(not defined open( LOG_HANDLE, ">>$log_file" )) {
251 print STDERR "cannot open $log_file: $!";
252 return
253 }
254 chomp($msg);
255 if($level <= $verbose){
256 my ($seconds, $minutes, $hours, $monthday, $month,
257 $year, $weekday, $yearday, $sommertime) = localtime(time);
258 $hours = $hours < 10 ? $hours = "0".$hours : $hours;
259 $minutes = $minutes < 10 ? $minutes = "0".$minutes : $minutes;
260 $seconds = $seconds < 10 ? $seconds = "0".$seconds : $seconds;
261 my @monthnames = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
262 $month = $monthnames[$month];
263 $monthday = $monthday < 10 ? $monthday = "0".$monthday : $monthday;
264 $year+=1900;
266 my $log_msg = "$month $monthday $hours:$minutes:$seconds $prg $msg\n";
267 print LOG_HANDLE $log_msg;
268 if( $foreground ) {
269 print STDERR $log_msg;
270 }
271 }
272 close( LOG_HANDLE );
273 }
274 }
277 #=== FUNCTION ================================================================
278 # NAME: get_interfaces
279 # PARAMETERS: none
280 # RETURNS: (list of interfaces)
281 # DESCRIPTION: Uses proc fs (/proc/net/dev) to get list of interfaces.
282 #===============================================================================
283 sub get_interfaces {
284 my @result;
285 my $PROC_NET_DEV= ('/proc/net/dev');
287 open(PROC_NET_DEV, "<$PROC_NET_DEV")
288 or die "Could not open $PROC_NET_DEV";
290 my @ifs = <PROC_NET_DEV>;
292 close(PROC_NET_DEV);
294 # Eat first two line
295 shift @ifs;
296 shift @ifs;
298 chomp @ifs;
299 foreach my $line(@ifs) {
300 my $if= (split /:/, $line)[0];
301 $if =~ s/^\s+//;
302 push @result, $if;
303 }
305 return @result;
306 }
308 #=== FUNCTION ================================================================
309 # NAME: get_mac
310 # PARAMETERS: interface name (i.e. eth0)
311 # RETURNS: (mac address)
312 # DESCRIPTION: Uses ioctl to get mac address directly from system.
313 #===============================================================================
314 sub get_mac {
315 my $ifreq= shift;
316 my $result;
317 if ($ifreq && length($ifreq) > 0) {
318 if($ifreq eq "all") {
319 if(defined($server_ip)) {
320 $result = &get_local_mac_for_remote_ip($server_ip);
321 }
322 elsif ($client_mac_address && length($client_mac_address) > 0 && !($client_mac_address eq "00:00:00:00:00:00")){
323 $result = &client_mac_address;
324 }
325 else {
326 $result = "00:00:00:00:00:00";
327 }
328 } else {
329 my $SIOCGIFHWADDR= 0x8927; # man 2 ioctl_list
331 # A configured MAC Address should always override a guessed value
332 if ($client_mac_address and length($client_mac_address) > 0 and not($client_mac_address eq "00:00:00:00:00:00")) {
333 $result= $client_mac_address;
334 }
335 else {
336 socket SOCKET, PF_INET, SOCK_DGRAM, getprotobyname('ip')
337 or die "socket: $!";
339 if(ioctl SOCKET, $SIOCGIFHWADDR, $ifreq) {
340 my ($if, $mac)= unpack 'h36 H12', $ifreq;
342 if (length($mac) > 0) {
343 $mac=~ m/^([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])$/;
344 $mac= sprintf("%s:%s:%s:%s:%s:%s", $1, $2, $3, $4, $5, $6);
345 $result = $mac;
346 }
347 }
348 }
349 }
350 }
351 return $result;
352 }
355 #=== FUNCTION ================================================================
356 # NAME: get_interface_for_ip
357 # PARAMETERS: ip address (i.e. 192.168.0.1)
358 # RETURNS: array: list of interfaces if ip=0.0.0.0, matching interface if found, undef else
359 # DESCRIPTION: Uses proc fs (/proc/net/dev) to get list of interfaces.
360 #===============================================================================
361 sub get_interface_for_ip {
362 my $result;
363 my $ip= shift;
364 if ($ip && length($ip) > 0) {
365 my @ifs= &get_interfaces();
366 if($ip eq "0.0.0.0") {
367 $result = "all";
368 } else {
369 foreach (@ifs) {
370 my $if=$_;
371 if(get_ip($if) eq $ip) {
372 $result = $if;
373 last;
374 }
375 }
376 }
377 }
378 return $result;
379 }
382 #=== FUNCTION ================================================================
383 # NAME: get_ip
384 # PARAMETERS: interface name (i.e. eth0)
385 # RETURNS: (ip address)
386 # DESCRIPTION: Uses ioctl to get ip address directly from system.
387 #===============================================================================
388 sub get_ip {
389 my $ifreq= shift;
390 my $result= "";
391 my $SIOCGIFADDR= 0x8915; # man 2 ioctl_list
392 my $proto= getprotobyname('ip');
394 socket SOCKET, PF_INET, SOCK_DGRAM, $proto
395 or die "socket: $!";
397 if(ioctl SOCKET, $SIOCGIFADDR, $ifreq) {
398 my ($if, $sin) = unpack 'a16 a16', $ifreq;
399 my ($port, $addr) = sockaddr_in $sin;
400 my $ip = inet_ntoa $addr;
402 if ($ip && length($ip) > 0) {
403 $result = $ip;
404 }
405 }
407 return $result;
408 }
411 #=== FUNCTION ================================================================
412 # NAME: get_local_mac_for_remote_ip
413 # PARAMETERS: none (takes server_ip from global variable)
414 # RETURNS: (ip address from interface that is used for communication)
415 # DESCRIPTION: Uses ioctl to get routing table from system, checks which entry
416 # matches (defaultroute last).
417 #===============================================================================
418 sub get_local_mac_for_remote_ip {
419 my $server_ip= shift;
420 my $result= "00:00:00:00:00:00";
422 if($server_ip =~ /^(\d\d?\d?\.){3}\d\d?\d?$/) {
423 my $PROC_NET_ROUTE= ('/proc/net/route');
425 open(PROC_NET_ROUTE, "<$PROC_NET_ROUTE")
426 or die "Could not open $PROC_NET_ROUTE";
428 my @ifs = <PROC_NET_ROUTE>;
430 close(PROC_NET_ROUTE);
432 # Eat header line
433 shift @ifs;
434 chomp @ifs;
435 foreach my $line(@ifs) {
436 my ($Iface,$Destination,$Gateway,$Flags,$RefCnt,$Use,$Metric,$Mask,$MTU,$Window,$IRTT)=split(/\s/, $line);
437 my $destination;
438 my $mask;
439 my ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Destination);
440 $destination= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
441 ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Mask);
442 $mask= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
443 if(new NetAddr::IP($server_ip)->within(new NetAddr::IP($destination, $mask))) {
444 # destination matches route, save mac and exit
445 $result= &get_mac($Iface);
446 last;
447 }
448 }
449 } else {
450 daemon_log("get_local_mac_for_remote_ip was called with a non-ip parameter: $server_ip", 1);
451 }
452 return $result;
453 }
455 sub get_local_ip_for_remote_ip {
456 my $server_ip= shift;
457 my $result="0.0.0.0";
459 if($server_ip =~ /^(\d\d?\d?\.){3}\d\d?\d?$/) {
460 if($server_ip eq "127.0.0.1") {
461 $result="127.0.0.1";
462 } else {
463 my $PROC_NET_ROUTE= ('/proc/net/route');
465 open(PROC_NET_ROUTE, "<$PROC_NET_ROUTE")
466 or die "Could not open $PROC_NET_ROUTE";
468 my @ifs = <PROC_NET_ROUTE>;
470 close(PROC_NET_ROUTE);
472 # Eat header line
473 shift @ifs;
474 chomp @ifs;
475 foreach my $line(@ifs) {
476 my ($Iface,$Destination,$Gateway,$Flags,$RefCnt,$Use,$Metric,$Mask,$MTU,$Window,$IRTT)=split(/\s/, $line);
477 my $destination;
478 my $mask;
479 my ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Destination);
480 $destination= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
481 ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Mask);
482 $mask= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
483 if(new NetAddr::IP($server_ip)->within(new NetAddr::IP($destination, $mask))) {
484 # destination matches route, save mac and exit
485 $result= &get_ip($Iface);
486 last;
487 }
488 }
489 }
490 } else {
491 daemon_log("get_local_ip_for_remote_ip was called with a non-ip parameter: $server_ip", 1);
492 }
493 return $result;
494 }
497 sub generate_hw_digest {
498 my $hw_data;
499 foreach my $line (split /\n/, `cat /proc/bus/pci/devices`) {
500 $hw_data.= sprintf "%s", $line =~ /[^\s]+\s([^\s]+)\s.*/;
501 }
502 return(md5_base64($hw_data));
503 }
506 # moved to GosaSupportDaemon: rettenbe, 19.05.2008
507 #sub create_passwd {
508 # my $new_passwd = "";
509 # for(my $i=0; $i<31; $i++) {
510 # $new_passwd .= ("a".."z","A".."Z",0..9)[int(rand(62))]
511 # }
512 #
513 # return $new_passwd;
514 #}
517 sub create_ciphering {
518 my ($passwd) = @_;
519 if((!defined($passwd)) || length($passwd)==0) {
520 $passwd = "";
521 }
522 $passwd = substr(md5_hex("$passwd") x 32, 0, 32);
523 my $iv = substr(md5_hex('GONICUS GmbH'),0, 16);
524 my $my_cipher = Crypt::Rijndael->new($passwd , Crypt::Rijndael::MODE_CBC());
525 $my_cipher->set_iv($iv);
526 return $my_cipher;
527 }
530 sub encrypt_msg {
531 my ($msg, $key) = @_;
532 my $my_cipher = &create_ciphering($key);
533 my $len;
534 {
535 use bytes;
536 $len= 16-length($msg)%16;
537 }
538 $msg = "\0"x($len).$msg;
539 $msg = $my_cipher->encrypt($msg);
540 chomp($msg = &encode_base64($msg));
541 # there are no newlines allowed inside msg
542 $msg=~ s/\n//g;
543 return $msg;
544 }
547 sub decrypt_msg {
549 my ($msg, $key) = @_ ;
550 $msg = &decode_base64($msg);
551 my $my_cipher = &create_ciphering($key);
552 $msg = $my_cipher->decrypt($msg);
553 $msg =~ s/\0*//g;
554 return $msg;
555 }
558 # moved to GosaSupportDaemon: rettenbe: 16.05.2008
559 #sub get_server_addresses {
560 # my $domain= shift;
561 # my @result;
562 #
563 # my $error = 0;
564 # my $res = Net::DNS::Resolver->new;
565 # my $query = $res->send("_gosa-si._tcp.".$domain, "SRV");
566 # my @hits;
567 #
568 # if ($query) {
569 # foreach my $rr ($query->answer) {
570 # push(@hits, $rr->target.":".$rr->port);
571 # }
572 # }
573 # else {
574 # #warn "query failed: ", $res->errorstring, "\n";
575 # $error++;
576 # }
577 #
578 # if( $error == 0 ) {
579 # foreach my $hit (@hits) {
580 # my ($hit_name, $hit_port) = split(/:/, $hit);
581 # chomp($hit_name);
582 # chomp($hit_port);
583 #
584 # my $address_query = $res->send($hit_name);
585 # if( 1 == length($address_query->answer) ) {
586 # foreach my $rr ($address_query->answer) {
587 # push(@result, $rr->address.":".$hit_port);
588 # }
589 # }
590 # }
591 # }
592 #
593 # return @result;
594 #}
597 #=== FUNCTION ================================================================
598 # NAME: send_msg_hash_to_target
599 # PARAMETERS: msg_hash - hash - xml_hash created with function create_xml_hash
600 # PeerAddr string - socket address to send msg
601 # PeerPort string - socket port, if not included in socket address
602 # RETURNS: nothing
603 # DESCRIPTION: ????
604 #===============================================================================
605 sub send_msg_hash_to_target {
606 my ($msg_hash, $address, $encrypt_key) = @_ ;
607 my $msg = &create_xml_string($msg_hash);
608 my $header = @{$msg_hash->{'header'}}[0];
609 my $error = &send_msg_to_target($msg, $address, $encrypt_key, $header);
611 return $error;
612 }
615 sub send_msg_to_target {
616 my ($msg, $address, $encrypt_key, $msg_header) = @_ ;
617 my $error = 0;
619 if( $msg_header ) { $msg_header = "'$msg_header'-"; }
620 else { $msg_header = ""; }
622 # encrypt xml msg
623 my $crypted_msg = &encrypt_msg($msg, $encrypt_key);
625 # opensocket
626 my $socket = &open_socket($address);
627 if( !$socket ) {
628 daemon_log("ERROR: cannot send ".$msg_header."msg to $address , host not reachable", 1);
629 if ($REGISTERED == 1) {
630 $REGISTERED = 0; # if server is not available, cause reregistering
631 daemon_log("INFO: cause reregistering at gosa-si-server", 5);
632 $global_kernel->yield('register_at_gosa_si_server');
634 }
635 $error++;
636 }
638 # send xml msg
639 if( $error == 0 ) {
640 print $socket $crypted_msg."\n";
641 daemon_log("INFO: send ".$msg_header."msg to $address", 5);
642 daemon_log("DEBUG: message:\n$msg", 9);
643 }
645 # close socket in any case
646 if( $socket ) {
647 close $socket;
648 }
650 return $error;
651 }
654 sub write_to_file {
655 my ($string, $file) = @_;
656 my $error = 0;
658 if( not defined $file || not -f $file ) {
659 &main::daemon_log("ERROR: $prg: check '-f file' failed: $file", 1);
660 $error++;
661 }
662 if( not defined $string || 0 == length($string)) {
663 &main::daemon_log("ERROR: $prg: empty string to write to file '$file'", 1);
664 $error++;
665 }
667 if( $error == 0 ) {
669 chomp($string);
671 if (open(FILE, ">> $file")){
672 print FILE $string."\n";
673 close(FILE);
674 }
675 }
677 return;
678 }
681 sub open_socket {
682 my ($PeerAddr, $PeerPort) = @_ ;
683 if(defined($PeerPort)){
684 $PeerAddr = $PeerAddr.":".$PeerPort;
685 }
686 my $socket;
687 $socket = new IO::Socket::INET(PeerAddr => $PeerAddr,
688 Porto => "tcp",
689 Type => SOCK_STREAM,
690 Timeout => 5,
691 );
692 if(not defined $socket) {
693 return;
694 }
695 &daemon_log("DEBUG: open_socket: $PeerAddr", 7);
696 return $socket;
697 }
700 #=== FUNCTION ================================================================
701 # NAME: register_at_server
702 # PARAMETERS:
703 # RETURNS:
704 # DESCRIPTION:
705 #===============================================================================
706 sub register_at_gosa_si_server {
707 my ($kernel) = $_[KERNEL];
708 my $try_to_register = 0;
710 # if client is already registered, stop registration process
711 if ($REGISTERED) {
712 $kernel->delay('register_at_gosa_si_server');
714 # client is not registered, start registration process
715 } else {
716 # clear all other triggered events and wait till registration was successful
717 $kernel->delay('trigger_new_key');
719 # create new passwd and ciphering object for client-server communication
720 $server_key = &create_passwd();
722 my $events = join( ",", keys %{$event_hash} );
723 while(1) {
724 $try_to_register++;
726 # after one complete round through all server, stop trying to register
727 if( $try_to_register > @servers ) { last; }
729 # fetch first gosa-si-server from @servers
730 # append shifted gosa-si-server at the end of @servers, so looking for servers never stop if
731 # a registration never occured
732 my $server = shift(@servers);
733 push( @servers, $server );
735 # Check if our ip is resolvable - if not: don't try to register
736 if(!(defined($server) && $server =~ m/^[0-9\.]*?:.*$/)) {
737 &main::daemon_log("ERROR: Server with address '".defined($server)?$server:""."' is invalid!", 1);
738 if (length(@servers) == 1) {
739 &main::daemon_log("ERROR: No valid servers found!", 1);
740 exit(1);
741 }
742 }
744 # Check if our ip is resolvable - if not: don't try to register
745 my $ip= &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
746 my $dnsname= gethostbyaddr(inet_aton($ip), AF_INET);
747 if(!defined($dnsname)) {
748 &write_to_file("goto-error-dns:$ip", $fai_logpath);
749 exit(1);
750 }
752 # create registration msg
753 my $local_ip = &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
754 my $local_mac = &get_local_mac_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
755 my $register_hash = &create_xml_hash("here_i_am", $local_ip.":".$client_port, $server);
756 &add_content2xml_hash($register_hash, "new_passwd", $server_key);
757 &add_content2xml_hash($register_hash, "mac_address", $local_mac);
758 &add_content2xml_hash($register_hash, "events", $events);
759 &add_content2xml_hash($register_hash, "client_status", $client_status);
760 &add_content2xml_hash($register_hash, "client_revision", $client_revision);
761 &add_content2xml_hash($register_hash, "gotoHardwareChecksum", $gotoHardwareChecksum);
762 &add_content2xml_hash($register_hash, "key_lifetime", $server_key_lifetime);
764 # Add $HOSTNAME from ENV if force-hostname is set
765 if( defined($client_force_hostname) && $client_force_hostname eq "true") {
766 if(defined($ENV{HOSTNAME}) && length($ENV{HOSTNAME}) >0 ) {
767 &add_content2xml_hash($register_hash, "force-hostname", $ENV{HOSTNAME});
768 } else {
769 &main::daemon_log("force-hostname was set to true, but no \$HOSTNAME was found in Environment!",0);
770 }
771 }
773 # send xml hash to server with general server passwd
774 my $res = &send_msg_hash_to_target($register_hash, $server, $default_server_key);
776 # if delivery of registration msg succeed
777 if($res eq "0") {
778 # reset try_to_register
779 $try_to_register = 0;
781 # Set fixed client address and mac address
782 $client_ip= &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
783 $client_address= "$client_ip:$client_port";
784 $client_mac_address = $local_mac;
785 $client_dnsname = $dnsname;
786 last;
788 # delivery of registration msg failed
789 } else {
790 # wait 1 sec until trying to register again
791 sleep(1);
792 next;
793 }
795 } # end of while
796 # one circle through all servers finished and no registration succeed
797 if ( $try_to_register >= @servers ) {
798 &write_to_file("gosa-si-no-server-available", $fai_logpath);
799 $kernel->delay_set('register_at_gosa_si_server', $delay_set_time);
801 # delivery of registraion msg succeed, waiting for server response
802 } else {
803 daemon_log("INFO: waiting for msg 'register_at_gosa_si_server'",5);
804 $kernel->delay_set('register_at_gosa_si_server', $delay_set_time);
805 # clear old settings and set it again
806 $kernel->delay('trigger_new_key');
807 $kernel->delay_set('trigger_new_key', $server_key_lifetime);
808 }
810 }
811 return;
812 }
815 sub check_key_and_xml_validity {
816 my ($crypted_msg, $module_key) = @_;
818 my $msg;
819 my $msg_hash;
820 eval{
821 $msg = &decrypt_msg($crypted_msg, $module_key);
822 &main::daemon_log("decrypted_msg: \n$msg", 9);
824 $msg_hash = $xml->XMLin($msg, ForceArray=>1);
826 ##############
827 # check header
828 my $header_l = $msg_hash->{'header'};
829 if( 1 != @{$header_l} ) {
830 die 'no or more headers specified';
831 }
832 my $header = @{$header_l}[0];
833 if( 0 == length $header) {
834 die 'header has length 0';
835 }
837 ##############
838 # check source
839 my $source_l = $msg_hash->{'source'};
840 if( 1 != @{$source_l} ) {
841 die 'no or more than 1 sources specified';
842 }
843 my $source = @{$source_l}[0];
844 if( 0 == length $source) {
845 die 'source has length 0';
846 }
847 unless( $source =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ) {
848 die "source '$source' is neither a complete ip-address with port nor 'GOSA'";
849 }
851 ##############
852 # check target
853 my $target_l = $msg_hash->{'target'};
854 if( 1 != @{$target_l} ) {
855 die 'no or more than 1 targets specified ';
856 }
857 my $target = @{$target_l}[0];
858 if( 0 == length $target) {
859 die 'target has length 0 ';
860 }
861 unless( $target =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ){
862 die "source is neither a complete ip-address with port nor 'GOSA'";
863 }
864 };
865 if($@) {
866 &main::daemon_log("WARNING: do not understand the message or msg is not gosa-si envelope conform:", 5);
867 &main::daemon_log("$@", 8);
868 $msg = undef;
869 $msg_hash = undef;
870 }
872 return ($msg, $msg_hash);
873 }
876 sub check_outgoing_xml_validity {
877 my ($msg) = @_;
879 my $msg_hash;
880 eval{
881 $msg_hash = $xml->XMLin($msg, ForceArray=>1);
883 ##############
884 # check header
885 my $header_l = $msg_hash->{'header'};
886 if( 1 != @{$header_l} ) {
887 die 'no or more than one headers specified';
888 }
889 my $header = @{$header_l}[0];
890 if( 0 == length $header) {
891 die 'header has length 0';
892 }
894 ##############
895 # check source
896 my $source_l = $msg_hash->{'source'};
897 if( 1 != @{$source_l} ) {
898 die 'no or more than 1 sources specified';
899 }
900 my $source = @{$source_l}[0];
901 if( 0 == length $source) {
902 die 'source has length 0';
903 }
904 unless( $source =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ||
905 $source =~ /^GOSA$/i ) {
906 die "source '$source' is neither a complete ip-address with port";
907 }
909 ##############
910 # check target
911 my $target_l = $msg_hash->{'target'};
912 if( 1 != @{$target_l} ) {
913 die "no or more than one targets specified";
914 }
915 foreach my $target (@$target_l) {
916 if( 0 == length $target) {
917 die "target has length 0";
918 }
919 unless( $target =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ) {
920 die "target '$target' is not a complete ip-address with port or a valid target name";
921 }
922 }
923 };
924 if($@) {
925 daemon_log("WARNING: outgoing msg is not gosa-si envelope conform", 5);
926 daemon_log("$@ $msg", 8);
927 $msg_hash = undef;
928 }
929 return ($msg_hash);
930 }
933 #sub import_events {
934 #
935 # if (not -e $event_dir) {
936 # daemon_log("ERROR: cannot find directory or directory is not readable: $event_dir", 1);
937 # }
938 # opendir (DIR, $event_dir) or die "ERROR while loading gosa-si-events from directory $event_dir : $!\n";
939 #
940 # while (defined (my $event = readdir (DIR))) {
941 # if( $event eq "." || $event eq ".." ) { next; }
942 # daemon_log("INFO: found event module: $event", 5);
943 # eval{ require $event; };
944 # if( $@ ) {
945 # daemon_log("ERROR: import of event module '$event' failed", 1);
946 # daemon_log("$@", 1);
947 # next;
948 # }
949 #
950 # $event =~ /(\S*?).pm$/;
951 # my $event_module = $1;
952 # my $events_l = eval( $1."::get_events()") ;
953 # foreach my $event_name (@{$events_l}) {
954 # $event_hash->{$event_name} = $event_module;
955 # }
956 #
957 # }
958 #
959 # my @all_events = keys %$event_hash;
960 # my $all_events_string = join(", ", @all_events);
961 #
962 # daemon_log("INFO: imported events: $all_events_string", 5);
963 #}
965 sub trigger_new_key {
966 my ($kernel) = $_[KERNEL] ;
968 my $msg = "<xml><header>new_key</header><source>$client_address</source><target>$client_address</target></xml>";
969 &send_msg_to_target($msg, $client_address, $server_key, 'new_key');
971 $kernel->delay_set('trigger_new_key', $server_key_lifetime);
972 }
975 sub trigger_logged_in_users_report {
976 my ($kernel) = $_[KERNEL] ;
978 # just do if client is registered already
979 if( $REGISTERED ) {
980 my $result = qx(/usr/bin/users);
981 my @logged_in_user_list;
982 if( defined $result ) {
983 chomp($result);
984 @logged_in_user_list = split(/\s/, $result);
985 }
987 system("echo 'CURRENTLY_LOGGED_IN ".join(" ", @logged_in_user_list)."' > /var/run/gosa-si-client.socket");
988 $kernel->delay_set('trigger_logged_in_users_report', $trigger_logged_in_users_report_delay);
989 } else {
990 # try it in 10 sec again
991 $kernel->delay_set('trigger_logged_in_users_report', 10);
992 }
993 }
996 sub generic_file_error {
997 my ( $heap, $operation, $errno, $error_string, $wheel_id ) =
998 @_[ HEAP, ARG0, ARG1, ARG2, ARG3 ];
1000 my $service = $heap->{services}->{$wheel_id};
1001 daemon_log("ERROR: '$service' watcher $operation error $errno: $error_string", 1);
1002 daemon_log("ERROR: shutting down '$service' file watcher", 1);
1004 delete $heap->{services}->{$wheel_id};
1005 delete $heap->{watchers}->{$wheel_id};
1006 return;
1007 }
1010 sub fifo_got_record {
1011 my $file_record = $_[ARG0];
1012 my $header;
1013 my $content = "";
1014 daemon_log("DEBUG: fifo got record: $file_record", 7);
1016 $file_record =~ /^(\S+)[ ]?([\s\S]+)?$/;
1017 if( defined $1 ) {
1018 $header = $1;
1019 } else {
1020 return;
1021 }
1023 if( defined $2 ) {
1024 $content = $2;
1025 }
1027 my $clmsg_hash = &create_xml_hash("CLMSG_$header", $client_address, $server_address, $content);
1028 &add_content2xml_hash($clmsg_hash, "macaddress", $client_mac_address);
1029 my $clmsg = &create_xml_string($clmsg_hash);
1030 &send_msg_to_target($clmsg, $server_address, $server_key, "CLMSG_$header");
1032 # if installation finished, save all log files
1033 if ($file_record eq "TASKBEGIN finish") {
1034 &save_fai_log($fai_log_dir);
1035 }
1037 return;
1038 }
1041 sub save_fai_log {
1042 my ($fai_log_dir) = @_ ;
1043 my $FAI_DIR;
1045 opendir($FAI_DIR, $fai_log_dir);
1046 if (not defined $FAI_DIR) {
1047 daemon_log("ERROR: can not open directory $fai_log_dir: $!", 1);
1048 return;
1049 }
1051 my @log_files = readdir($FAI_DIR);
1052 closedir($FAI_DIR);
1053 my @log_list;
1055 foreach my $log_file (@log_files) {
1056 if( $log_file eq "." || $log_file eq ".." ) { next; }
1057 my $log = "log_file:$log_file:";
1058 $log_file = File::Spec->catfile( $fai_log_dir, $log_file );
1059 open(my $FILE, "<$log_file");
1060 if (not defined $FILE ) {
1061 daemon_log("ERROR: can not open '$log_file': $!", 1);
1062 next;
1063 }
1064 my @lines = <$FILE>;
1065 my $log_string = join("", @lines);
1066 $log .= &encode_base64($log_string);
1067 push(@log_list, $log);
1068 close ($FILE);
1069 }
1071 my $all_log_string = join("\n", @log_list);
1072 my $msg_hash = &create_xml_hash("CLMSG_save_fai_log", $client_address, $server_address, $all_log_string);
1073 &add_content2xml_hash($msg_hash, "macaddress", $client_mac_address);
1074 my $msg = &create_xml_string($msg_hash);
1075 &send_msg_to_target($msg, $server_address, $server_key, "CLMSG_save_fai_log");
1077 }
1080 sub _start {
1081 my ($kernel, $heap) = @_[KERNEL, HEAP];
1082 $kernel->alias_set('client_session');
1083 $global_kernel = $kernel; # this is used to throw events at each point of the skript
1085 # force a registration at a gosa-si-server
1086 $kernel->yield('register_at_gosa_si_server');
1088 # install all file watcher defined
1089 while( my($name, $file) = each %files_to_watch ) {
1090 my $watcher = POE::Wheel::FollowTail->new(
1091 Filename => $file,
1092 InputEvent => $name."_record",
1093 # ResetEvent => "file_reset",
1094 ErrorEvent => "file_error",
1095 );
1096 # $heap->{tail} = POE::Wheel::Run->new(
1097 # Program => [ "/usr/bin/tail", "-f", $file ],
1098 # StdoutEvent => $file_name."_record",
1099 # );
1100 $heap->{services}->{ $watcher->ID } = $name;
1101 $heap->{watchers}->{ $watcher->ID } = $watcher;
1102 }
1103 $kernel->yield('trigger_logged_in_users_report');
1104 }
1107 sub _default {
1108 daemon_log("ERROR: can not handle incoming msg with header '$_[ARG0]'", 1);
1109 return;
1110 }
1113 sub server_input {
1114 my ($kernel, $heap, $input, $wheel) = @_[KERNEL, HEAP, ARG0, ARG1];
1115 my $remote_ip = $heap->{'remote_ip'},
1116 my $error = 0;
1117 my $answer;
1120 daemon_log("INFO: Incoming msg from '$remote_ip'", 5);
1121 daemon_log("DEBUG: Incoming msg:\n$input\n", 9);
1123 my ($msg, $msg_hash) = &check_key_and_xml_validity($input, $server_key);
1124 if( (!$msg) || (!$msg_hash) ) {
1125 daemon_log("WARNING: Deciphering of incoming msg failed", 3);
1126 if($server_address =~ /$remote_ip/) {
1127 # got a msg from gosa-si-server which can not be decrypted, may the secrete not up-to-date
1128 # cause a reregistering with a new secrete handshake
1129 daemon_log("WARNING: Message from gosa-si-server could not be understood, cause reregistering at server", 3);
1131 # if client is alread in a registration process, that means not registered, do nothing
1132 # if not, cause re-registration
1133 if (not $REGISTERED) {
1134 &daemon_log("WARNING: gosa-si-client is already in a registration process so ignore this message", 3);
1135 } else {
1136 $REGISTERED = 0;
1137 $kernel->post('client_session', 'register_at_gosa_si_server');
1138 }
1139 }
1140 $error++;
1141 }
1144 ######################
1145 # process incoming msg
1146 if( $error == 0 ) {
1147 my $header = @{$msg_hash->{header}}[0];
1148 my $source = @{$msg_hash->{source}}[0];
1150 if( exists $event_hash->{$header} ) {
1152 # a event exists with the header as name
1153 daemon_log("INFO: found event '$header' at event-module '".$event_hash->{$header}."'", 5);
1154 no strict 'refs';
1155 $answer = &{$event_hash->{$header}."::$header"}($msg, $msg_hash);
1156 }
1157 else {
1158 daemon_log("WARNING: no event '$header' found in event modules under $event_dir", 3);
1159 }
1160 }
1162 ########
1163 # answer
1164 if( $answer ) {
1166 #check gosa-si envelope validity
1167 my $answer_hash = &check_outgoing_xml_validity($answer);
1169 if( $answer_hash ) {
1170 # answer is valid
1172 # preprocessing
1173 if( $answer =~ "<header>registered</header>") {
1174 # set registered flag to true to stop sending further registered msgs
1175 $REGISTERED = 1;
1176 }
1177 else {
1178 $answer =~ /<header>(\S+)<\/header>/;
1179 &send_msg_to_target($answer, $server_address, $server_key, $1);
1180 }
1182 # postprocessing
1183 if( $answer =~ "<header>new_key</header>") {
1184 # set new key to global variable
1185 $answer =~ /<new_key>(\S*?)<\/new_key>/;
1186 my $new_key = $1;
1187 $server_key = $new_key;
1188 }
1189 }
1191 }
1193 return;
1194 }
1197 #==== MAIN = main ==============================================================
1198 # parse commandline options
1199 Getopt::Long::Configure( "bundling" );
1200 GetOptions("h|help" => \&usage,
1201 "c|config=s" => \$cfg_file,
1202 "f|foreground" => \$foreground,
1203 "v|verbose+" => \$verbose,
1204 );
1206 # read and set config parameters
1207 &check_cmdline_param ;
1208 &read_configfile($cfg_file, %cfg_defaults);
1209 &check_pid;
1212 # forward error messages to logfile
1213 if ( ! $foreground ) {
1214 open( STDIN, '+>/dev/null' );
1215 open( STDOUT, '+>&STDIN' );
1216 open( STDERR, '+>&STDIN' );
1217 }
1219 # Just fork, if we are not in foreground mode
1220 if( ! $foreground ) {
1221 chdir '/' or die "Can't chdir to /: $!";
1222 $pid = fork;
1223 setsid or die "Can't start a new session: $!";
1224 umask 0;
1225 } else {
1226 $pid = $$;
1227 }
1229 # Do something useful - put our PID into the pid_file
1230 if( 0 != $pid ) {
1231 open( LOCK_FILE, ">$pid_file" );
1232 print LOCK_FILE "$pid\n";
1233 close( LOCK_FILE );
1234 if( !$foreground ) {
1235 exit( 0 )
1236 };
1237 }
1239 # parse head url and revision from svn
1240 my $client_status_hash = { 'developmental'=>'revision', 'stable'=>'release'};
1241 $client_version =~ /^\$HeadURL: (\S+) \$:\$Rev: (\d+) \$$/;
1242 $client_headURL = defined $1 ? $1 : 'unknown' ;
1243 $client_revision = defined $2 ? $2 : 'unknown' ;
1244 if ($client_headURL =~ /\/tag\// ||
1245 $client_headURL =~ /\/branches\// ) {
1246 $client_status = "stable";
1247 } else {
1248 $client_status = "developmental" ;
1249 }
1251 daemon_log(" ", 1);
1252 daemon_log("$prg started!", 1);
1253 daemon_log("INFO: status: $client_status", 1);
1254 daemon_log("INFO: ".$client_status_hash->{$client_status}.": $client_revision", 1);
1256 # delete old DBsqlite lock files
1257 system('rm -f /tmp/gosa_si_lock*gosa-si-client*');
1259 # detect ip and mac address and complete host address
1260 $client_address = $client_ip.":".$client_port;
1261 my $network_interface= &get_interface_for_ip($client_ip);
1262 $client_mac_address= &get_mac($network_interface);
1263 daemon_log("INFO: ip address detected: $client_ip", 1);
1264 daemon_log("INFO: gosa-si-client mac address detected: $client_mac_address", 1);
1267 # import events
1268 my ($error, $result, $tmp_hash) = &import_events($event_dir);
1269 $event_hash = $tmp_hash;
1270 if ($error == 0) {
1271 foreach my $log_line (@$result) {
1272 daemon_log("DEBUG: $log_line", 7);
1273 }
1274 } else {
1275 foreach my $log_line (@$result) {
1276 daemon_log("ERROR: $log_line", 1);
1277 }
1278 }
1281 # compute hardware checksum
1282 $gotoHardwareChecksum= &generate_hw_digest();
1283 daemon_log("INFO: gotoHardwareChecksum detected: $gotoHardwareChecksum", 1);
1286 # create socket for incoming xml messages
1287 POE::Component::Server::TCP->new(
1288 Alias => 'gosa-si-client',
1289 Port => $client_port,
1290 ClientInput => \&server_input,
1291 );
1292 daemon_log("INFO: start socket for incoming xml messages at port '$client_port' ", 1);
1295 # prepare variables
1296 if( inet_aton($server_ip) ){ $server_ip = inet_ntoa(inet_aton($server_ip)); }
1297 ############################################################
1298 # to change
1299 #if( $server_ip eq "127.0.1.1" ) { $server_ip = "127.0.0.1" }
1300 ############################################################
1301 if (defined $server_ip && defined $server_port) {
1302 $server_address = $server_ip.":".$server_port;
1303 }
1304 $xml = new XML::Simple();
1305 $default_server_key = $server_key;
1308 # add gosa-si-server address from config file at first position of server list
1309 my $server_check_cfg = Config::IniFiles->new( -file => $cfg_file );
1310 my $server_check = (defined($server_check_cfg))?$server_check_cfg->val( "server", "ip"):undef;
1311 if( defined $server_check ) {
1312 unshift(@servers, $server_address);
1313 my $servers_string = join(", ", @servers);
1314 daemon_log("INFO: found servers in configuration file: $servers_string", 5);
1315 } else {
1316 my @tmp_servers;
1317 if ( !$server_domain) {
1318 # Try our DNS Searchlist
1319 for my $domain(get_dns_domains()) {
1320 chomp($domain);
1321 my @tmp_domains= &get_server_addresses($domain);
1322 if(@tmp_domains) {
1323 for my $tmp_server(@tmp_domains) {
1324 push @tmp_servers, $tmp_server;
1325 }
1326 }
1327 }
1328 if(@tmp_servers && length(@tmp_servers)==0) {
1329 daemon_log("ERROR: please specify a gosa-si-server address or a domain in config file", 1);
1330 kill 2, $$;
1331 }
1332 } else {
1333 @tmp_servers = &get_server_addresses($server_domain);
1334 if( 0 == @tmp_servers ) {
1335 daemon_log("ERROR: no gosa-si-server found in DNS for domain '$server_domain'",1);
1336 daemon_log("ERROR: please specify a gosa-si-server address or a domain in config file", 1);
1337 kill 2, $$;
1338 }
1339 }
1341 foreach my $server (@tmp_servers) {
1342 unshift(@servers, $server);
1343 }
1344 my $servers_string = join(", ", @servers);
1345 daemon_log("INFO: found servers in DNS: $servers_string", 5);
1346 }
1349 # open fifo for non-gosa-si-client-msgs to gosa-si-server
1350 POSIX::mkfifo("$gosa_si_client_fifo", "0600");
1353 POE::Session->create(
1354 inline_states => {
1355 _start => \&_start,
1356 _default => \&_default,
1357 register_at_gosa_si_server => \®ister_at_gosa_si_server,
1359 # trigger periodical tasks
1360 trigger_new_key => \&trigger_new_key,
1361 trigger_logged_in_users_report => \&trigger_logged_in_users_report,
1363 # handle records from each defined file differently
1364 fifo_record => \&fifo_got_record,
1366 # handle file resets and errors the same way for each file
1367 file_reset => \&generic_file_reset,
1368 file_error => \&generic_file_error,
1369 }
1370 );
1372 POE::Kernel->run();
1373 exit;