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 File::Basename;
38 use File::Spec;
40 # Workaround: need pure perl to make it work with UTF-8 :-(
41 $XML::Simple::PREFERRED_PARSER= "XML::SAX::PurePerl";
43 my $client_version = '$HeadURL$:$Rev$';
44 my $client_headURL;
45 my $client_revision;
46 my $client_status;
47 my $event_dir = "/usr/lib/gosa-si/client/events";
48 use lib "/usr/lib/gosa-si/client/events";
50 my (%cfg_defaults, $foreground, $verbose, $pid_file, $procid, $pid, $log_file, $fai_logpath);
51 my ($server_ip, $server_port, $server_timeout, $server_domain, $server_key_lifetime);
52 my ($client_port, $ldap_enabled, $ldap_config, $pam_config, $nss_config);
53 my $xml;
54 my $event_hash;
55 my $default_server_key;
56 my @servers;
57 my $gotoHardwareChecksum;
58 my $gosa_si_client_fifo;
59 my %files_to_watch;
60 $verbose= 1;
62 # globalise variables which are used in imported events
63 our $global_kernel;
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 $fai_log_dir = "/var/log/fai";
92 %cfg_defaults = (
93 "general" =>
94 {"log-file" => [\$log_file, "/var/run/".$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 sub usage {
124 print STDERR << "EOF" ;
125 usage: $prg [-hvf] [-c config]
127 -h : this (help) message
128 -c <file> : config file
129 -f : foreground, process will not be forked to background
130 -v : be verbose (multiple to increase verbosity)
132 EOF
133 print "\n" ;
134 }
136 #=== FUNCTION ================================================================
137 # NAME: check_cmdline_param
138 # PARAMETERS:
139 # RETURNS:
140 # DESCRIPTION:
141 #===============================================================================
142 sub check_cmdline_param () {
143 my $err_config;
144 my $err_counter = 0;
145 if(not defined($cfg_file)) {
146 $cfg_file = "/etc/gosa-si/client.conf";
147 if(! -r $cfg_file) {
148 $err_config = "please specify a config file";
149 $err_counter += 1;
150 }
151 }
152 if( $err_counter > 0 ) {
153 &usage( "", 1 );
154 if( defined( $err_config)) { print STDERR "$err_config\n"}
155 print STDERR "\n";
156 exit( -1 );
157 }
158 }
161 #=== FUNCTION ================================================================
162 # NAME: check_pid
163 # PARAMETERS:
164 # RETURNS:
165 # DESCRIPTION:
166 #===============================================================================
167 sub check_pid {
168 $pid = -1;
169 # Check, if we are already running
170 if( open(LOCK_FILE, "<$pid_file") ) {
171 $pid = <LOCK_FILE>;
172 if( defined $pid ) {
173 chomp( $pid );
174 if( -f "/proc/$pid/stat" ) {
175 my($stat) = `cat /proc/$pid/stat` =~ m/$pid \((.+)\).*/;
176 if( $0 eq $stat ) {
177 close( LOCK_FILE );
178 exit -1;
179 }
180 }
181 }
182 close( LOCK_FILE );
183 unlink( $pid_file );
184 }
186 # create a syslog msg if it is not to possible to open PID file
187 if (not sysopen(LOCK_FILE, $pid_file, O_WRONLY|O_CREAT|O_EXCL, 0644)) {
188 my($msg) = "Couldn't obtain lockfile '$pid_file' ";
189 if (open(LOCK_FILE, '<', $pid_file)
190 && ($pid = <LOCK_FILE>))
191 {
192 chomp($pid);
193 $msg .= "(PID $pid)\n";
194 } else {
195 $msg .= "(unable to read PID)\n";
196 }
197 if( ! ($foreground) ) {
198 openlog( $0, "cons,pid", "daemon" );
199 syslog( "warning", $msg );
200 closelog();
201 }
202 else {
203 print( STDERR " $msg " );
204 }
205 exit( -1 );
206 }
207 }
210 sub sig_int_handler {
211 my ($signal) = @_;
213 daemon_log("shutting down gosa-si-client", 1);
214 system("kill `ps -C gosa-si-client -o pid=`");
215 }
216 $SIG{INT} = \&sig_int_handler;
219 #=== FUNCTION ================================================================
220 # NAME: logging
221 # PARAMETERS: level - string - default 'info'
222 # msg - string -
223 # facility - string - default 'LOG_DAEMON'
224 # RETURNS:
225 # DESCRIPTION:
226 #===============================================================================
227 sub daemon_log {
228 # log into log_file
229 my( $msg, $level ) = @_;
230 if(not defined $msg) { return }
231 if(not defined $level) { $level = 1 }
232 if(defined $log_file){
233 open(LOG_HANDLE, ">>$log_file");
234 if(not defined open( LOG_HANDLE, ">>$log_file" )) {
235 print STDERR "cannot open $log_file: $!";
236 return
237 }
238 chomp($msg);
239 if($level <= $verbose){
240 my ($seconds, $minutes, $hours, $monthday, $month,
241 $year, $weekday, $yearday, $sommertime) = localtime(time);
242 $hours = $hours < 10 ? $hours = "0".$hours : $hours;
243 $minutes = $minutes < 10 ? $minutes = "0".$minutes : $minutes;
244 $seconds = $seconds < 10 ? $seconds = "0".$seconds : $seconds;
245 my @monthnames = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
246 $month = $monthnames[$month];
247 $monthday = $monthday < 10 ? $monthday = "0".$monthday : $monthday;
248 $year+=1900;
250 my $log_msg = "$month $monthday $hours:$minutes:$seconds $prg $msg\n";
251 print LOG_HANDLE $log_msg;
252 if( $foreground ) {
253 print STDERR $log_msg;
254 }
255 }
256 close( LOG_HANDLE );
257 }
258 }
261 #=== FUNCTION ================================================================
262 # NAME: get_mac
263 # PARAMETERS: interface name (i.e. eth0)
264 # RETURNS: (mac address)
265 # DESCRIPTION: Uses ioctl to get mac address directly from system.
266 #===============================================================================
267 sub get_mac {
268 my $ifreq= shift;
269 my $result;
270 if ($ifreq && length($ifreq) > 0) {
271 if($ifreq eq "all") {
272 if(defined($server_ip)) {
273 $result = &get_local_mac_for_remote_ip($server_ip);
274 }
275 elsif ($client_mac_address && length($client_mac_address) > 0 && !($client_mac_address eq "00:00:00:00:00:00")){
276 $result = &client_mac_address;
277 }
278 else {
279 $result = "00:00:00:00:00:00";
280 }
281 } else {
282 my $SIOCGIFHWADDR= 0x8927; # man 2 ioctl_list
284 # A configured MAC Address should always override a guessed value
285 if ($client_mac_address and length($client_mac_address) > 0 and not($client_mac_address eq "00:00:00:00:00:00")) {
286 $result= $client_mac_address;
287 }
288 else {
289 socket SOCKET, PF_INET, SOCK_DGRAM, getprotobyname('ip')
290 or die "socket: $!";
292 if(ioctl SOCKET, $SIOCGIFHWADDR, $ifreq) {
293 my ($if, $mac)= unpack 'h36 H12', $ifreq;
295 if (length($mac) > 0) {
296 $mac=~ m/^([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])$/;
297 $mac= sprintf("%s:%s:%s:%s:%s:%s", $1, $2, $3, $4, $5, $6);
298 $result = $mac;
299 }
300 }
301 }
302 }
303 }
304 return $result;
305 }
309 #=== FUNCTION ================================================================
310 # NAME: get_local_mac_for_remote_ip
311 # PARAMETERS: none (takes server_ip from global variable)
312 # RETURNS: (ip address from interface that is used for communication)
313 # DESCRIPTION: Uses ioctl to get routing table from system, checks which entry
314 # matches (defaultroute last).
315 #===============================================================================
316 sub get_local_mac_for_remote_ip {
317 my $server_ip= shift;
318 my $result= "00:00:00:00:00:00";
320 if($server_ip =~ /^(\d\d?\d?\.){3}\d\d?\d?$/) {
321 my $PROC_NET_ROUTE= ('/proc/net/route');
323 open(PROC_NET_ROUTE, "<$PROC_NET_ROUTE")
324 or die "Could not open $PROC_NET_ROUTE";
326 my @ifs = <PROC_NET_ROUTE>;
328 close(PROC_NET_ROUTE);
330 # Eat header line
331 shift @ifs;
332 chomp @ifs;
333 foreach my $line(@ifs) {
334 my ($Iface,$Destination,$Gateway,$Flags,$RefCnt,$Use,$Metric,$Mask,$MTU,$Window,$IRTT)=split(/\s/, $line);
335 my $destination;
336 my $mask;
337 my ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Destination);
338 $destination= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
339 ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Mask);
340 $mask= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
341 if(new NetAddr::IP($server_ip)->within(new NetAddr::IP($destination, $mask))) {
342 # destination matches route, save mac and exit
343 $result= &get_mac($Iface);
344 last;
345 }
346 }
347 } else {
348 daemon_log("get_local_mac_for_remote_ip was called with a non-ip parameter: $server_ip", 1);
349 }
350 return $result;
351 }
354 sub generate_hw_digest {
355 my $hw_data;
356 foreach my $line (split /\n/, `cat /proc/bus/pci/devices`) {
357 $hw_data.= sprintf "%s", $line =~ /[^\s]+\s([^\s]+)\s.*/;
358 }
359 return(md5_base64($hw_data));
360 }
363 sub create_ciphering {
364 my ($passwd) = @_;
365 if((!defined($passwd)) || length($passwd)==0) {
366 $passwd = "";
367 }
368 $passwd = substr(md5_hex("$passwd") x 32, 0, 32);
369 my $iv = substr(md5_hex('GONICUS GmbH'),0, 16);
370 my $my_cipher = Crypt::Rijndael->new($passwd , Crypt::Rijndael::MODE_CBC());
371 $my_cipher->set_iv($iv);
372 return $my_cipher;
373 }
376 sub encrypt_msg {
377 my ($msg, $key) = @_;
378 my $my_cipher = &create_ciphering($key);
379 my $len;
380 {
381 use bytes;
382 $len= 16-length($msg)%16;
383 }
384 $msg = "\0"x($len).$msg;
385 $msg = $my_cipher->encrypt($msg);
386 chomp($msg = &encode_base64($msg));
387 # there are no newlines allowed inside msg
388 $msg=~ s/\n//g;
389 return $msg;
390 }
393 sub decrypt_msg {
395 my ($msg, $key) = @_ ;
396 $msg = &decode_base64($msg);
397 my $my_cipher = &create_ciphering($key);
398 $msg = $my_cipher->decrypt($msg);
399 $msg =~ s/\0*//g;
400 return $msg;
401 }
404 #=== FUNCTION ================================================================
405 # NAME: send_msg_hash_to_target
406 # PARAMETERS: msg_hash - hash - xml_hash created with function create_xml_hash
407 # PeerAddr string - socket address to send msg
408 # PeerPort string - socket port, if not included in socket address
409 # RETURNS: nothing
410 # DESCRIPTION: ????
411 #===============================================================================
412 sub send_msg_hash_to_target {
413 my ($msg_hash, $address, $encrypt_key) = @_ ;
414 my $msg = &create_xml_string($msg_hash);
415 my $header = @{$msg_hash->{'header'}}[0];
416 my $error = &send_msg_to_target($msg, $address, $encrypt_key, $header);
418 return $error;
419 }
422 sub send_msg_to_target {
423 my ($msg, $address, $encrypt_key, $msg_header) = @_ ;
424 my $error = 0;
426 if( $msg_header ) { $msg_header = "'$msg_header'-"; }
427 else { $msg_header = ""; }
429 # encrypt xml msg
430 my $crypted_msg = &encrypt_msg($msg, $encrypt_key);
432 # opensocket
433 my $socket = &open_socket($address);
434 if( !$socket ) {
435 daemon_log("WARNING: cannot send ".$msg_header."msg to $address , host not reachable", 3);
436 if ($REGISTERED == 1) {
437 $REGISTERED = 0; # if server is not available, cause reregistering
438 daemon_log("INFO: cause reregistering at gosa-si-server", 5);
439 $global_kernel->yield('register_at_gosa_si_server');
441 }
442 $error++;
443 }
445 # send xml msg
446 if( $error == 0 ) {
447 print $socket $crypted_msg."\n";
448 daemon_log("INFO: send ".$msg_header."msg to $address", 5);
449 daemon_log("DEBUG: message:\n$msg", 9);
450 }
452 # close socket in any case
453 if( $socket ) {
454 close $socket;
455 }
457 return $error;
458 }
461 sub write_to_file {
462 my ($string, $file) = @_;
463 my $error = 0;
465 if( not defined $file || not -f $file ) {
466 &main::daemon_log("ERROR: $prg: check '-f file' failed: $file", 1);
467 $error++;
468 }
469 if( not defined $string || 0 == length($string)) {
470 &main::daemon_log("ERROR: $prg: empty string to write to file '$file'", 1);
471 $error++;
472 }
474 if( $error == 0 ) {
476 chomp($string);
478 if (open(FILE, ">> $file")){
479 print FILE $string."\n";
480 close(FILE);
481 }
482 }
484 return;
485 }
488 sub open_socket {
489 my ($PeerAddr, $PeerPort) = @_ ;
490 if(defined($PeerPort)){
491 $PeerAddr = $PeerAddr.":".$PeerPort;
492 }
493 my $socket;
494 $socket = new IO::Socket::INET(PeerAddr => $PeerAddr,
495 Porto => "tcp",
496 Type => SOCK_STREAM,
497 Timeout => 5,
498 );
499 if(not defined $socket) {
500 return;
501 }
502 &daemon_log("DEBUG: open_socket: $PeerAddr", 7);
503 return $socket;
504 }
507 #=== FUNCTION ================================================================
508 # NAME: register_at_server
509 # PARAMETERS:
510 # RETURNS:
511 # DESCRIPTION:
512 #===============================================================================
513 sub register_at_gosa_si_server {
514 my ($kernel) = $_[KERNEL];
515 my $try_to_register = 0;
517 # if client is already registered, stop registration process
518 if ($REGISTERED) {
519 $kernel->delay('register_at_gosa_si_server');
521 # client is not registered, start registration process
522 } else {
523 # clear all other triggered events and wait till registration was successful
524 $kernel->delay('trigger_new_key');
526 # create new passwd and ciphering object for client-server communication
527 $server_key = &create_passwd();
529 my $events = join( ",", keys %{$event_hash} );
530 while(1) {
531 $try_to_register++;
533 # after one complete round through all server, stop trying to register
534 if( $try_to_register > @servers ) { last; }
536 # fetch first gosa-si-server from @servers
537 # append shifted gosa-si-server at the end of @servers, so looking for servers never stop if
538 # a registration never occured
539 my $server = shift(@servers);
540 push( @servers, $server );
542 # Check if our ip is resolvable - if not: don't try to register
543 if(!(defined($server) && $server =~ m/^[0-9\.]*?:.*$/)) {
544 &main::daemon_log("ERROR: Server with address '".defined($server)?$server:""."' is invalid!", 1);
545 if (length(@servers) == 1) {
546 &main::daemon_log("ERROR: No valid servers found!", 1);
547 exit(1);
548 }
549 }
551 # Check if our ip is resolvable - if not: don't try to register
552 my $ip= &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
553 my $dnsname= gethostbyaddr(inet_aton($ip), AF_INET);
554 if(!defined($dnsname)) {
555 if( defined($client_force_hostname) && $client_force_hostname eq "true") {
556 $dnsname = `hostname`;
557 } else {
558 &write_to_file("goto-error-dns:$ip", $fai_logpath);
559 exit(1);
560 }
561 }
563 # create registration msg
564 my $local_ip = &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
565 my $local_mac = &get_local_mac_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
566 my $register_hash = &create_xml_hash("here_i_am", $local_ip.":".$client_port, $server);
567 &add_content2xml_hash($register_hash, "new_passwd", $server_key);
568 &add_content2xml_hash($register_hash, "mac_address", $local_mac);
569 &add_content2xml_hash($register_hash, "events", $events);
570 &add_content2xml_hash($register_hash, "client_status", $client_status);
571 &add_content2xml_hash($register_hash, "client_revision", $client_revision);
572 &add_content2xml_hash($register_hash, "gotoHardwareChecksum", $gotoHardwareChecksum);
573 &add_content2xml_hash($register_hash, "key_lifetime", $server_key_lifetime);
575 # Add $HOSTNAME from ENV if force-hostname is set
576 if( defined($client_force_hostname) && $client_force_hostname eq "true") {
577 if(defined($ENV{HOSTNAME}) && length($ENV{HOSTNAME}) >0 ) {
578 &add_content2xml_hash($register_hash, "force-hostname", $ENV{HOSTNAME});
579 } else {
580 &main::daemon_log("force-hostname was set to true, but no \$HOSTNAME was found in Environment!",0);
581 }
582 }
584 # send xml hash to server with general server passwd
585 my $res = &send_msg_hash_to_target($register_hash, $server, $default_server_key);
587 # if delivery of registration msg succeed
588 if($res eq "0") {
589 # reset try_to_register
590 $try_to_register = 0;
592 # Set fixed client address and mac address
593 $client_ip= &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
594 $client_address= "$client_ip:$client_port";
595 $client_mac_address = $local_mac;
596 $client_dnsname = $dnsname;
597 last;
599 # delivery of registration msg failed
600 } else {
601 # wait 1 sec until trying to register again
602 sleep(1);
603 next;
604 }
606 } # end of while
607 # one circle through all servers finished and no registration succeed
608 if ( $try_to_register >= @servers ) {
609 &write_to_file("gosa-si-no-server-available", $fai_logpath);
610 $kernel->delay_set('register_at_gosa_si_server', $delay_set_time);
612 # delivery of registraion msg succeed, waiting for server response
613 } else {
614 daemon_log("INFO: waiting for msg 'register_at_gosa_si_server'",5);
615 $kernel->delay_set('register_at_gosa_si_server', $delay_set_time);
616 # clear old settings and set it again
617 $kernel->delay('trigger_new_key');
618 $kernel->delay_set('trigger_new_key', $server_key_lifetime);
619 }
621 }
622 return;
623 }
626 sub check_key_and_xml_validity {
627 my ($crypted_msg, $module_key) = @_;
629 my $msg;
630 my $msg_hash;
631 eval{
632 $msg = &decrypt_msg($crypted_msg, $module_key);
633 &main::daemon_log("decrypted_msg: \n$msg", 9);
635 $msg_hash = $xml->XMLin($msg, ForceArray=>1);
637 ##############
638 # check header
639 my $header_l = $msg_hash->{'header'};
640 if( 1 != @{$header_l} ) {
641 die 'no or more headers specified';
642 }
643 my $header = @{$header_l}[0];
644 if( 0 == length $header) {
645 die 'header has length 0';
646 }
648 ##############
649 # check source
650 my $source_l = $msg_hash->{'source'};
651 if( 1 != @{$source_l} ) {
652 die 'no or more than 1 sources specified';
653 }
654 my $source = @{$source_l}[0];
655 if( 0 == length $source) {
656 die 'source has length 0';
657 }
658 unless( $source =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ) {
659 die "source '$source' is neither a complete ip-address with port nor 'GOSA'";
660 }
662 ##############
663 # check target
664 my $target_l = $msg_hash->{'target'};
665 if( 1 != @{$target_l} ) {
666 die 'no or more than 1 targets specified ';
667 }
668 my $target = @{$target_l}[0];
669 if( 0 == length $target) {
670 die 'target has length 0 ';
671 }
672 unless( $target =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ){
673 die "source is neither a complete ip-address with port nor 'GOSA'";
674 }
675 };
676 if($@) {
677 &main::daemon_log("WARNING: do not understand the message or msg is not gosa-si envelope conform:", 5);
678 &main::daemon_log("$@", 8);
679 $msg = undef;
680 $msg_hash = undef;
681 }
683 return ($msg, $msg_hash);
684 }
687 sub check_outgoing_xml_validity {
688 my ($msg) = @_;
690 my $msg_hash;
691 eval{
692 $msg_hash = $xml->XMLin($msg, ForceArray=>1);
694 ##############
695 # check header
696 my $header_l = $msg_hash->{'header'};
697 if( 1 != @{$header_l} ) {
698 die 'no or more than one headers specified';
699 }
700 my $header = @{$header_l}[0];
701 if( 0 == length $header) {
702 die 'header has length 0';
703 }
705 ##############
706 # check source
707 my $source_l = $msg_hash->{'source'};
708 if( 1 != @{$source_l} ) {
709 die 'no or more than 1 sources specified';
710 }
711 my $source = @{$source_l}[0];
712 if( 0 == length $source) {
713 die 'source has length 0';
714 }
715 unless( $source =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ||
716 $source =~ /^GOSA$/i ) {
717 die "source '$source' is neither a complete ip-address with port";
718 }
720 ##############
721 # check target
722 my $target_l = $msg_hash->{'target'};
723 if( 1 != @{$target_l} ) {
724 die "no or more than one targets specified";
725 }
726 foreach my $target (@$target_l) {
727 if( 0 == length $target) {
728 die "target has length 0";
729 }
730 unless( $target =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ) {
731 die "target '$target' is not a complete ip-address with port or a valid target name";
732 }
733 }
734 };
735 if($@) {
736 daemon_log("WARNING: outgoing msg is not gosa-si envelope conform", 5);
737 daemon_log("$@ $msg", 8);
738 $msg_hash = undef;
739 }
740 return ($msg_hash);
741 }
744 sub trigger_new_key {
745 my ($kernel) = $_[KERNEL] ;
747 my $msg = "<xml><header>new_key</header><source>$client_address</source><target>$client_address</target></xml>";
748 &send_msg_to_target($msg, $client_address, $server_key, 'new_key');
750 $kernel->delay_set('trigger_new_key', $server_key_lifetime);
751 }
754 sub trigger_logged_in_users_report {
755 my ($kernel) = $_[KERNEL] ;
757 # just do if client is registered already
758 if( $REGISTERED ) {
759 my $result = qx(/usr/bin/users);
760 my @logged_in_user_list;
761 if( defined $result ) {
762 chomp($result);
763 @logged_in_user_list = split(/\s/, $result);
764 }
766 system("echo 'CURRENTLY_LOGGED_IN ".join(" ", @logged_in_user_list)."' > /var/run/gosa-si-client.socket");
767 $kernel->delay_set('trigger_logged_in_users_report', $trigger_logged_in_users_report_delay);
768 } else {
769 # try it in 10 sec again
770 $kernel->delay_set('trigger_logged_in_users_report', 10);
771 }
772 }
775 sub generic_file_error {
776 my ( $heap, $operation, $errno, $error_string, $wheel_id ) =
777 @_[ HEAP, ARG0, ARG1, ARG2, ARG3 ];
779 my $service = $heap->{services}->{$wheel_id};
780 daemon_log("ERROR: '$service' watcher $operation error $errno: $error_string", 1);
781 daemon_log("ERROR: shutting down '$service' file watcher", 1);
783 delete $heap->{services}->{$wheel_id};
784 delete $heap->{watchers}->{$wheel_id};
785 return;
786 }
789 sub fifo_got_record {
790 my $file_record = $_[ARG0];
791 my $header;
792 my $content = "";
793 daemon_log("DEBUG: fifo got record: $file_record", 7);
795 $file_record =~ /^(\S+)[ ]?([\s\S]+)?$/;
796 if( defined $1 ) {
797 $header = $1;
798 } else {
799 return;
800 }
802 if( defined $2 ) {
803 $content = $2;
804 }
806 my $clmsg_hash = &create_xml_hash("CLMSG_$header", $client_address, $server_address, $content);
807 &add_content2xml_hash($clmsg_hash, "macaddress", $client_mac_address);
808 my $clmsg = &create_xml_string($clmsg_hash);
809 &send_msg_to_target($clmsg, $server_address, $server_key, "CLMSG_$header");
811 # if installation finished, save all log files
812 if ($file_record eq "TASKBEGIN finish") {
813 &save_fai_log($fai_log_dir);
814 }
816 return;
817 }
820 sub save_fai_log {
821 my ($fai_log_dir) = @_ ;
822 my $FAI_DIR;
824 opendir($FAI_DIR, $fai_log_dir);
825 if (not defined $FAI_DIR) {
826 daemon_log("ERROR: can not open directory $fai_log_dir: $!", 1);
827 return;
828 }
830 my @log_files = readdir($FAI_DIR);
831 closedir($FAI_DIR);
832 my @log_list;
834 foreach my $log_file (@log_files) {
835 if( $log_file eq "." || $log_file eq ".." ) { next; }
836 my $log = "log_file:$log_file:";
837 $log_file = File::Spec->catfile( $fai_log_dir, $log_file );
838 open(my $FILE, "<$log_file");
839 if (not defined $FILE ) {
840 daemon_log("ERROR: can not open '$log_file': $!", 1);
841 next;
842 }
843 my @lines = <$FILE>;
844 my $log_string = join("", @lines);
845 $log .= &encode_base64($log_string);
846 push(@log_list, $log);
847 close ($FILE);
848 }
850 my $all_log_string = join("\n", @log_list);
851 my $msg_hash = &create_xml_hash("CLMSG_save_fai_log", $client_address, $server_address, $all_log_string);
852 &add_content2xml_hash($msg_hash, "macaddress", $client_mac_address);
853 my $msg = &create_xml_string($msg_hash);
854 &send_msg_to_target($msg, $server_address, $server_key, "CLMSG_save_fai_log");
856 }
859 sub sig_handler {
860 my ($kernel, $signal) = @_[KERNEL, ARG0] ;
861 daemon_log("0 INFO got signal '$signal'", 1);
862 $kernel->sig_handled();
863 return;
864 }
867 sub _start {
868 my ($kernel, $heap) = @_[KERNEL, HEAP];
869 $kernel->alias_set('client_session');
870 $global_kernel = $kernel; # this is used to throw events at each point of the skript
872 $kernel->sig(USR1 => "sig_handler");
874 # force a registration at a gosa-si-server
875 $kernel->yield('register_at_gosa_si_server');
877 # install all file watcher defined
878 while( my($name, $file) = each %files_to_watch ) {
879 my $watcher = POE::Wheel::FollowTail->new(
880 Filename => $file,
881 InputEvent => $name."_record",
882 # ResetEvent => "file_reset",
883 ErrorEvent => "file_error",
884 );
885 # $heap->{tail} = POE::Wheel::Run->new(
886 # Program => [ "/usr/bin/tail", "-f", $file ],
887 # StdoutEvent => $file_name."_record",
888 # );
889 $heap->{services}->{ $watcher->ID } = $name;
890 $heap->{watchers}->{ $watcher->ID } = $watcher;
891 }
892 $kernel->yield('trigger_logged_in_users_report');
893 }
896 sub _default {
897 daemon_log("ERROR: can not handle incoming msg with header '$_[ARG0]'", 1);
898 return;
899 }
902 sub server_input {
903 my ($kernel, $heap, $input, $wheel) = @_[KERNEL, HEAP, ARG0, ARG1];
904 my $remote_ip = $heap->{'remote_ip'},
905 my $error = 0;
906 my $answer;
909 daemon_log("INFO: Incoming msg from '$remote_ip'", 5);
910 daemon_log("DEBUG: Incoming msg:\n$input\n", 9);
912 my ($msg, $msg_hash) = &check_key_and_xml_validity($input, $server_key);
913 if( (!$msg) || (!$msg_hash) ) {
914 daemon_log("WARNING: Deciphering of incoming msg failed", 3);
915 if($server_address =~ /$remote_ip/) {
916 # got a msg from gosa-si-server which can not be decrypted, may the secrete not up-to-date
917 # cause a reregistering with a new secrete handshake
918 daemon_log("WARNING: Message from gosa-si-server could not be understood, cause reregistering at server", 3);
920 # if client is alread in a registration process, that means not registered, do nothing
921 # if not, cause re-registration
922 if (not $REGISTERED) {
923 &daemon_log("WARNING: gosa-si-client is already in a registration process so ignore this message", 3);
924 } else {
925 $REGISTERED = 0;
926 $kernel->post('client_session', 'register_at_gosa_si_server');
927 }
928 }
929 $error++;
930 }
933 ######################
934 # process incoming msg
935 if( $error == 0 ) {
936 my $header = @{$msg_hash->{header}}[0];
937 my $source = @{$msg_hash->{source}}[0];
939 if( exists $event_hash->{$header} ) {
941 # a event exists with the header as name
942 daemon_log("INFO: found event '$header' at event-module '".$event_hash->{$header}."'", 5);
943 no strict 'refs';
944 $answer = &{$event_hash->{$header}."::$header"}($msg, $msg_hash);
945 }
946 else {
947 daemon_log("WARNING: no event '$header' found in event modules under $event_dir", 3);
948 }
949 }
951 ########
952 # answer
953 if( $answer ) {
955 #check gosa-si envelope validity
956 my $answer_hash = &check_outgoing_xml_validity($answer);
958 if( $answer_hash ) {
959 # answer is valid
961 # preprocessing
962 if( $answer =~ "<header>registered</header>") {
963 # set registered flag to true to stop sending further registered msgs
964 $REGISTERED = 1;
965 }
966 else {
967 $answer =~ /<header>(\S+)<\/header>/;
968 &send_msg_to_target($answer, $server_address, $server_key, $1);
969 }
971 # postprocessing
972 if( $answer =~ "<header>new_key</header>") {
973 # set new key to global variable
974 $answer =~ /<new_key>(\S*?)<\/new_key>/;
975 my $new_key = $1;
976 $server_key = $new_key;
977 }
978 }
980 }
982 return;
983 }
986 #==== MAIN = main ==============================================================
987 # parse commandline options
988 Getopt::Long::Configure( "bundling" );
989 GetOptions("h|help" => \&usage,
990 "c|config=s" => \$cfg_file,
991 "f|foreground" => \$foreground,
992 "v|verbose+" => \$verbose,
993 );
995 # read and set config parameters
996 &check_cmdline_param ;
997 &read_configfile($cfg_file, %cfg_defaults);
998 &check_pid;
1001 # forward error messages to logfile
1002 if ( ! $foreground ) {
1003 open( STDIN, '+>/dev/null' );
1004 open( STDOUT, '+>&STDIN' );
1005 open( STDERR, '+>&STDIN' );
1006 }
1008 # Just fork, if we are not in foreground mode
1009 if( ! $foreground ) {
1010 chdir '/' or die "Can't chdir to /: $!";
1011 $pid = fork;
1012 setsid or die "Can't start a new session: $!";
1013 umask 0;
1014 } else {
1015 $pid = $$;
1016 }
1018 # Do something useful - put our PID into the pid_file
1019 if( 0 != $pid ) {
1020 open( LOCK_FILE, ">$pid_file" );
1021 print LOCK_FILE "$pid\n";
1022 close( LOCK_FILE );
1023 if( !$foreground ) {
1024 exit( 0 )
1025 };
1026 }
1028 # parse head url and revision from svn
1029 my $client_status_hash = { 'developmental'=>'revision', 'stable'=>'release'};
1030 $client_version =~ /^\$HeadURL: (\S+) \$:\$Rev: (\d+) \$$/;
1031 $client_headURL = defined $1 ? $1 : 'unknown' ;
1032 $client_revision = defined $2 ? $2 : 'unknown' ;
1033 if ($client_headURL =~ /\/tag\// ||
1034 $client_headURL =~ /\/branches\// ) {
1035 $client_status = "stable";
1036 } else {
1037 $client_status = "developmental" ;
1038 }
1040 # Prepare log file
1041 my $root_uid = getpwnam('root');
1042 my $adm_gid = getgrnam('adm');
1043 chmod(0640, $log_file);
1044 chown($root_uid, $adm_gid, $log_file);
1047 daemon_log(" ", 1);
1048 daemon_log("$prg started!", 1);
1049 daemon_log("INFO: status: $client_status", 1);
1050 daemon_log("INFO: ".$client_status_hash->{$client_status}.": $client_revision", 1);
1052 # delete old DBsqlite lock files
1053 system('rm -f /tmp/gosa_si_lock*gosa-si-client*');
1055 # detect ip and mac address and complete host address
1056 $client_address = $client_ip.":".$client_port;
1057 my $network_interface= &get_interface_for_ip($client_ip);
1058 $client_mac_address= &get_mac($network_interface);
1059 daemon_log("INFO: ip address detected: $client_ip", 1);
1060 daemon_log("INFO: gosa-si-client mac address detected: $client_mac_address", 1);
1063 # import events
1064 my ($error, $result, $tmp_hash) = &import_events($event_dir);
1065 while (my ($module, $mod_event_hash) = each %$tmp_hash) {
1066 while (my ($event_name, $nothing) = each %$mod_event_hash) {
1067 $event_hash->{$event_name} = $module;
1068 }
1069 }
1071 foreach my $log_line (@$result) {
1072 if ($log_line =~ / succeed: /) {
1073 &main::daemon_log("0 DEBUG: $log_line", 7);
1074 } else {
1075 &main::daemon_log("0 ERROR: $log_line", 1);
1076 }
1077 }
1080 # compute hardware checksum
1081 $gotoHardwareChecksum= &generate_hw_digest();
1082 daemon_log("INFO: gotoHardwareChecksum detected: $gotoHardwareChecksum", 1);
1085 # create socket for incoming xml messages
1086 POE::Component::Server::TCP->new(
1087 Alias => 'gosa-si-client',
1088 Port => $client_port,
1089 ClientInput => \&server_input,
1090 );
1091 daemon_log("INFO: start socket for incoming xml messages at port '$client_port' ", 1);
1094 # prepare variables
1095 if( inet_aton($server_ip) ){ $server_ip = inet_ntoa(inet_aton($server_ip)); }
1096 if (defined $server_ip && defined $server_port) {
1097 $server_address = $server_ip.":".$server_port;
1098 }
1099 $xml = new XML::Simple();
1100 $default_server_key = $server_key;
1103 # add gosa-si-server address from config file at first position of server list
1104 my $server_check_cfg = Config::IniFiles->new( -file => $cfg_file );
1105 my $server_check = (defined($server_check_cfg))?$server_check_cfg->val( "server", "ip"):undef;
1106 if( defined $server_check ) {
1107 unshift(@servers, $server_address);
1108 my $servers_string = join(", ", @servers);
1109 daemon_log("INFO: found servers in configuration file: $servers_string", 1);
1110 } else {
1111 my @tmp_servers;
1112 if ( !$server_domain) {
1113 # Try our DNS Searchlist
1114 my @domain_list = &get_dns_domains();
1115 my $tmp_domains;
1116 my $error_string;
1117 for my $domain (@domain_list) {
1118 chomp($domain);
1119 ($tmp_domains, $error_string) = &get_server_addresses($domain);
1120 if(@$tmp_domains) {
1121 for my $tmp_server(@$tmp_domains) {
1122 push @tmp_servers, $tmp_server;
1123 }
1124 }
1125 }
1126 if (0 == @tmp_servers) {
1127 my $log_string = "no gosa-si-server found!";
1128 $log_string .= "\n\tdetermined domains out of /etc/resolv.conf: ".join(", ", @domain_list);
1129 $log_string .= "\n\tdetermined server addresses in domains: ".join(", ",@$tmp_domains);
1130 daemon_log("ERROR: $log_string", 1);
1131 daemon_log("ERROR: $error_string", 1);
1132 daemon_log("ERROR: please specify a gosa-si-server address or a domain in config file", 1);
1133 kill 2, $$;
1134 }
1135 } else {
1136 @tmp_servers = &get_server_addresses($server_domain);
1137 if( 0 == @tmp_servers ) {
1138 daemon_log("ERROR: no gosa-si-server found in DNS for domain '$server_domain'",1);
1139 daemon_log("ERROR: please specify a gosa-si-server address or a domain in config file", 1);
1140 kill 2, $$;
1141 }
1142 }
1144 foreach my $server (@tmp_servers) {
1145 unshift(@servers, $server);
1146 }
1147 my $servers_string = join(", ", @servers);
1148 daemon_log("INFO: found servers in DNS: $servers_string", 1);
1149 }
1152 # open fifo for non-gosa-si-client-msgs to gosa-si-server
1153 POSIX::mkfifo("$gosa_si_client_fifo", "0600");
1156 POE::Session->create(
1157 inline_states => {
1158 _start => \&_start,
1159 _default => \&_default,
1160 sig_handler => \&sig_handler,
1161 register_at_gosa_si_server => \®ister_at_gosa_si_server,
1163 # trigger periodical tasks
1164 trigger_new_key => \&trigger_new_key,
1165 trigger_logged_in_users_report => \&trigger_logged_in_users_report,
1167 # handle records from each defined file differently
1168 fifo_record => \&fifo_got_record,
1170 # handle file resets and errors the same way for each file
1171 file_reset => \&generic_file_reset,
1172 file_error => \&generic_file_error,
1173 }
1174 );
1176 POE::Kernel->run();
1177 exit;