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 my $client_version = '$HeadURL$:$Rev$';
23 use strict;
24 use warnings;
25 use Getopt::Long;
26 use Config::IniFiles;
27 use POSIX;
28 use Time::HiRes qw( gettimeofday );
30 use POE qw(Component::Server::TCP Wheel::FollowTail Wheel::Run);
31 use IO::Socket::INET;
32 use NetAddr::IP;
33 use Data::Dumper;
34 use Crypt::Rijndael;
35 use GOSA::GosaSupportDaemon;
36 use Digest::MD5 qw(md5_hex md5 md5_base64);
37 use MIME::Base64;
38 use XML::Simple;
39 use File::Basename;
40 use File::Spec;
42 # Workaround: need pure perl to make it work with UTF-8 :-(
43 $XML::Simple::PREFERRED_PARSER= "XML::SAX::PurePerl";
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 n seconds the client reports logged_in users to gosa-si-server
88 my $trigger_logged_in_users_report_delay = 600;
90 # all n seconds the client reports messages seen by user
91 my $trigger_seen_messages_delay = 30;
93 # directory where all log files from installation are stored
94 my $fai_log_dir = "/var/log/fai";
96 %cfg_defaults = (
97 "general" =>
98 {"log-file" => [\$log_file, "/var/run/".$prg.".log"],
99 "pid-file" => [\$pid_file, "/var/run/".$prg.".pid"],
100 "opts-file" => [\$opts_file, "/var/run/".$prg.".opts"],
101 },
102 "client" =>
103 {"port" => [\$client_port, "20083"],
104 "ip" => [\$client_ip, "0.0.0.0"],
105 "mac-address" => [\$client_mac_address, "00:00:00:00:00:00"],
106 "server-domain" => [\$server_domain, ""],
107 "ldap" => [\$ldap_enabled, 1],
108 "ldap-config" => [\$ldap_config, "/etc/ldap/ldap.conf"],
109 "pam-config" => [\$pam_config, "/etc/pam_ldap.conf"],
110 "nss-config" => [\$nss_config, "/etc/libnss-ldap.conf"],
111 "fai-logpath" => [\$fai_logpath, "/var/log/fai/fai.log"],
112 "force-hostname" => [\$client_force_hostname, "false"],
113 },
114 "server" => {
115 "ip" => [\$server_ip, "127.0.0.1"],
116 "port" => [\$server_port, "20081"],
117 "key" => [\$server_key, ""],
118 "timeout" => [\$server_timeout, 10],
119 "key-lifetime" => [\$server_key_lifetime, 600],
120 },
122 );
125 #=== FUNCTIONS = functions =====================================================
127 sub usage {
128 print STDERR << "EOF" ;
129 usage: $prg [-hvf] [-c config]
131 -h : this (help) message
132 -c <file> : config file
133 -f : foreground, process will not be forked to background
134 -v : be verbose (multiple to increase verbosity)
136 EOF
137 print "\n" ;
138 }
140 #=== FUNCTION ================================================================
141 # NAME: check_cmdline_param
142 # PARAMETERS:
143 # RETURNS:
144 # DESCRIPTION:
145 #===============================================================================
146 sub check_cmdline_param () {
147 my $err_config;
148 my $err_counter = 0;
149 if(not defined($cfg_file)) {
150 $cfg_file = "/etc/gosa-si/client.conf";
151 if(! -r $cfg_file) {
152 $err_config = "please specify a config file";
153 $err_counter += 1;
154 }
155 }
156 if( $err_counter > 0 ) {
157 &usage( "", 1 );
158 if( defined( $err_config)) { print STDERR "$err_config\n"}
159 print STDERR "\n";
160 exit( -1 );
161 }
162 }
165 #=== FUNCTION ================================================================
166 # NAME: check_pid
167 # PARAMETERS:
168 # RETURNS:
169 # DESCRIPTION:
170 #===============================================================================
171 sub check_pid {
172 $pid = -1;
173 # Check, if we are already running
174 if( open(LOCK_FILE, "<$pid_file") ) {
175 $pid = <LOCK_FILE>;
176 if( defined $pid ) {
177 chomp( $pid );
178 if( -f "/proc/$pid/stat" ) {
179 my($stat) = `cat /proc/$pid/stat` =~ m/$pid \((.+)\).*/;
180 if( $0 eq $stat ) {
181 close( LOCK_FILE );
182 exit -1;
183 }
184 }
185 }
186 close( LOCK_FILE );
187 unlink( $pid_file );
188 }
190 # create a syslog msg if it is not to possible to open PID file
191 if (not sysopen(LOCK_FILE, $pid_file, O_WRONLY|O_CREAT|O_EXCL, 0644)) {
192 my($msg) = "Couldn't obtain lockfile '$pid_file' ";
193 if (open(LOCK_FILE, '<', $pid_file)
194 && ($pid = <LOCK_FILE>))
195 {
196 chomp($pid);
197 $msg .= "(PID $pid)\n";
198 } else {
199 $msg .= "(unable to read PID)\n";
200 }
201 if( ! ($foreground) ) {
202 openlog( $0, "cons,pid", "daemon" );
203 syslog( "warning", $msg );
204 closelog();
205 }
206 else {
207 print( STDERR " $msg " );
208 }
209 exit( -1 );
210 }
211 }
214 sub sig_int_handler {
215 my ($signal) = @_;
217 daemon_log("shutting down gosa-si-client", 1);
218 system("kill `ps -C gosa-si-client -o pid=`");
219 }
220 $SIG{INT} = \&sig_int_handler;
223 #=== FUNCTION ================================================================
224 # NAME: logging
225 # PARAMETERS: level - string - default 'info'
226 # msg - string -
227 # facility - string - default 'LOG_DAEMON'
228 # RETURNS:
229 # DESCRIPTION:
230 #===============================================================================
231 sub daemon_log {
232 # log into log_file
233 my( $msg, $level ) = @_;
234 if(not defined $msg) { return }
235 if(not defined $level) { $level = 1 }
236 if(defined $log_file){
237 open(LOG_HANDLE, ">>$log_file");
238 if(not defined open( LOG_HANDLE, ">>$log_file" )) {
239 print STDERR "cannot open $log_file: $!";
240 return
241 }
242 chomp($msg);
243 if($level <= $verbose){
244 my ($seconds, $minutes, $hours, $monthday, $month,
245 $year, $weekday, $yearday, $sommertime) = localtime(time);
246 $hours = $hours < 10 ? $hours = "0".$hours : $hours;
247 $minutes = $minutes < 10 ? $minutes = "0".$minutes : $minutes;
248 $seconds = $seconds < 10 ? $seconds = "0".$seconds : $seconds;
249 my @monthnames = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
250 $month = $monthnames[$month];
251 $monthday = $monthday < 10 ? $monthday = "0".$monthday : $monthday;
252 $year+=1900;
254 my $log_msg = "$month $monthday $hours:$minutes:$seconds $prg $msg\n";
255 print LOG_HANDLE $log_msg;
256 if( $foreground ) {
257 print STDERR $log_msg;
258 }
259 }
260 close( LOG_HANDLE );
261 }
262 }
265 #=== FUNCTION ================================================================
266 # NAME: get_mac
267 # PARAMETERS: interface name (i.e. eth0)
268 # RETURNS: (mac address)
269 # DESCRIPTION: Uses ioctl to get mac address directly from system.
270 #===============================================================================
271 sub get_mac {
272 my $ifreq= shift;
273 my $result;
274 if ($ifreq && length($ifreq) > 0) {
275 if($ifreq eq "all") {
276 if(defined($server_ip)) {
277 $result = &get_local_mac_for_remote_ip($server_ip);
278 }
279 elsif ($client_mac_address && length($client_mac_address) > 0 && !($client_mac_address eq "00:00:00:00:00:00")){
280 $result = &client_mac_address;
281 }
282 else {
283 $result = "00:00:00:00:00:00";
284 }
285 } else {
286 my $SIOCGIFHWADDR= 0x8927; # man 2 ioctl_list
288 # A configured MAC Address should always override a guessed value
289 if ($client_mac_address and length($client_mac_address) > 0 and not($client_mac_address eq "00:00:00:00:00:00")) {
290 $result= $client_mac_address;
291 }
292 else {
293 socket SOCKET, PF_INET, SOCK_DGRAM, getprotobyname('ip')
294 or die "socket: $!";
296 if(ioctl SOCKET, $SIOCGIFHWADDR, $ifreq) {
297 my ($if, $mac)= unpack 'h36 H12', $ifreq;
299 if (length($mac) > 0) {
300 $mac=~ m/^([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])$/;
301 $mac= sprintf("%s:%s:%s:%s:%s:%s", $1, $2, $3, $4, $5, $6);
302 $result = $mac;
303 }
304 }
305 }
306 }
307 }
308 return $result;
309 }
313 #=== FUNCTION ================================================================
314 # NAME: get_local_mac_for_remote_ip
315 # PARAMETERS: none (takes server_ip from global variable)
316 # RETURNS: (ip address from interface that is used for communication)
317 # DESCRIPTION: Uses ioctl to get routing table from system, checks which entry
318 # matches (defaultroute last).
319 #===============================================================================
320 sub get_local_mac_for_remote_ip {
321 my $server_ip= shift;
322 my $result= "00:00:00:00:00:00";
324 if($server_ip =~ /^(\d\d?\d?\.){3}\d\d?\d?$/) {
325 my $PROC_NET_ROUTE= ('/proc/net/route');
327 open(PROC_NET_ROUTE, "<$PROC_NET_ROUTE")
328 or die "Could not open $PROC_NET_ROUTE";
330 my @ifs = <PROC_NET_ROUTE>;
332 close(PROC_NET_ROUTE);
334 # Eat header line
335 shift @ifs;
336 chomp @ifs;
337 foreach my $line(@ifs) {
338 my ($Iface,$Destination,$Gateway,$Flags,$RefCnt,$Use,$Metric,$Mask,$MTU,$Window,$IRTT)=split(/\s/, $line);
339 my $destination;
340 my $mask;
341 my ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Destination);
342 $destination= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
343 ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Mask);
344 $mask= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
345 if(new NetAddr::IP($server_ip)->within(new NetAddr::IP($destination, $mask))) {
346 # destination matches route, save mac and exit
347 $result= &get_mac($Iface);
348 last;
349 }
350 }
351 } else {
352 daemon_log("get_local_mac_for_remote_ip was called with a non-ip parameter: $server_ip", 1);
353 }
354 return $result;
355 }
358 sub generate_hw_digest {
359 my $hw_data;
360 foreach my $line (split /\n/, `cat /proc/bus/pci/devices`) {
361 $hw_data.= sprintf "%s", $line =~ /[^\s]+\s([^\s]+)\s.*/;
362 }
363 return(md5_base64($hw_data));
364 }
367 sub create_ciphering {
368 my ($passwd) = @_;
369 if((!defined($passwd)) || length($passwd)==0) {
370 $passwd = "";
371 }
372 $passwd = substr(md5_hex("$passwd") x 32, 0, 32);
373 my $iv = substr(md5_hex('GONICUS GmbH'),0, 16);
374 my $my_cipher = Crypt::Rijndael->new($passwd , Crypt::Rijndael::MODE_CBC());
375 $my_cipher->set_iv($iv);
376 return $my_cipher;
377 }
380 sub encrypt_msg {
381 my ($msg, $key) = @_;
382 my $my_cipher = &create_ciphering($key);
383 my $len;
384 {
385 use bytes;
386 $len= 16-length($msg)%16;
387 }
388 $msg = "\0"x($len).$msg;
389 $msg = $my_cipher->encrypt($msg);
390 chomp($msg = &encode_base64($msg));
391 # there are no newlines allowed inside msg
392 $msg=~ s/\n//g;
393 return $msg;
394 }
397 sub decrypt_msg {
399 my ($msg, $key) = @_ ;
400 $msg = &decode_base64($msg);
401 my $my_cipher = &create_ciphering($key);
402 $msg = $my_cipher->decrypt($msg);
403 $msg =~ s/\0*//g;
404 return $msg;
405 }
408 #=== FUNCTION ================================================================
409 # NAME: send_msg_hash_to_target
410 # PARAMETERS: msg_hash - hash - xml_hash created with function create_xml_hash
411 # PeerAddr string - socket address to send msg
412 # PeerPort string - socket port, if not included in socket address
413 # RETURNS: nothing
414 # DESCRIPTION: ????
415 #===============================================================================
416 sub send_msg_hash_to_target {
417 my ($msg_hash, $address, $encrypt_key) = @_ ;
418 my $msg = &create_xml_string($msg_hash);
419 my $header = @{$msg_hash->{'header'}}[0];
420 my $error = &send_msg_to_target($msg, $address, $encrypt_key, $header);
422 return $error;
423 }
426 sub send_msg_to_target {
427 my ($msg, $address, $encrypt_key, $msg_header) = @_ ;
428 my $error = 0;
430 if( $msg_header ) { $msg_header = "'$msg_header'-"; }
431 else { $msg_header = ""; }
433 # Memorize own source address
434 $msg =~ /<source>(\S+)<\/source>/;
435 my $own_source_address = $1;
437 # encrypt xml msg
438 my $crypted_msg = &encrypt_msg($msg, $encrypt_key);
440 # opensocket
441 my $socket = &open_socket($address);
442 if( !$socket ) {
443 daemon_log("WARNING: cannot send ".$msg_header."msg to $address , host not reachable", 3);
444 if ($REGISTERED == 1) {
445 $REGISTERED = 0; # if server is not available, cause reregistering
446 daemon_log("INFO: cause reregistering at gosa-si-server", 5);
447 $global_kernel->yield('register_at_gosa_si_server');
449 }
450 $error++;
451 }
453 # send xml msg
454 if( $error == 0 ) {
455 print $socket $crypted_msg.";$own_source_address\n";
456 daemon_log("INFO: send ".$msg_header."msg to $address", 5);
457 daemon_log("DEBUG: message:\n$msg", 9);
458 }
460 # close socket in any case
461 if( $socket ) {
462 close $socket;
463 }
465 return $error;
466 }
469 sub write_to_file {
470 my ($string, $file) = @_;
471 my $error = 0;
473 if( not defined $file || not -f $file ) {
474 &main::daemon_log("ERROR: $prg: check '-f file' failed: $file", 1);
475 $error++;
476 }
477 if( not defined $string || 0 == length($string)) {
478 &main::daemon_log("ERROR: $prg: empty string to write to file '$file'", 1);
479 $error++;
480 }
482 if( $error == 0 ) {
484 chomp($string);
486 if (open(FILE, ">> $file")){
487 print FILE $string."\n";
488 close(FILE);
489 }
490 }
492 return;
493 }
496 sub open_socket {
497 my ($PeerAddr, $PeerPort) = @_ ;
498 if(defined($PeerPort)){
499 $PeerAddr = $PeerAddr.":".$PeerPort;
500 }
501 my $socket;
502 $socket = new IO::Socket::INET(PeerAddr => $PeerAddr,
503 Porto => "tcp",
504 Type => SOCK_STREAM,
505 Timeout => 5,
506 );
507 if(not defined $socket) {
508 return;
509 }
510 &daemon_log("DEBUG: open_socket: $PeerAddr", 7);
511 return $socket;
512 }
515 #=== FUNCTION ================================================================
516 # NAME: register_at_server
517 # PARAMETERS:
518 # RETURNS:
519 # DESCRIPTION:
520 #===============================================================================
521 sub register_at_gosa_si_server {
522 my ($kernel) = $_[KERNEL];
523 my $try_to_register = 0;
525 # if client is already registered, stop registration process
526 if ($REGISTERED) {
527 $kernel->delay('register_at_gosa_si_server');
529 # client is not registered, start registration process
530 } else {
531 # clear all other triggered events and wait till registration was successful
532 $kernel->delay('trigger_new_key');
534 # create new passwd and ciphering object for client-server communication
535 $server_key = &create_passwd();
537 my $events = join( ",", keys %{$event_hash} );
538 while(1) {
539 $try_to_register++;
541 # after one complete round through all server, stop trying to register
542 if( $try_to_register > @servers ) { last; }
544 # fetch first gosa-si-server from @servers
545 # append shifted gosa-si-server at the end of @servers, so looking for servers never stop if
546 # a registration never occured
547 my $server = shift(@servers);
548 push( @servers, $server );
550 # Check if our ip is resolvable - if not: don't try to register
551 if(!(defined($server) && $server =~ m/^[0-9\.]*?:.*$/)) {
552 &main::daemon_log("ERROR: Server with address '".defined($server)?$server:""."' is invalid!", 1);
553 if (length(@servers) == 1) {
554 &main::daemon_log("ERROR: No valid servers found!", 1);
555 exit(1);
556 }
557 }
559 # Check if our ip is resolvable - if not: don't try to register
560 my $ip= &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
561 my $dnsname= gethostbyaddr(inet_aton($ip), AF_INET);
562 if(!defined($dnsname)) {
563 if( defined($client_force_hostname) && $client_force_hostname eq "true") {
564 $dnsname = `hostname`;
565 } else {
566 &write_to_file("goto-error-dns:$ip", $fai_logpath);
567 &main::daemon_log("ERROR: ip is not resolvable, no registration possible. Write 'goto-error-dns:$ip' to $fai_logpath", 1);
568 exit(1);
569 }
570 }
572 # create registration msg
573 my $local_ip = &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
574 my $local_mac = &get_local_mac_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
575 my $register_hash = &create_xml_hash("here_i_am", $local_ip.":".$client_port, $server);
576 &add_content2xml_hash($register_hash, "new_passwd", $server_key);
577 &add_content2xml_hash($register_hash, "mac_address", $local_mac);
578 &add_content2xml_hash($register_hash, "events", $events);
579 &add_content2xml_hash($register_hash, "client_status", $client_status);
580 &add_content2xml_hash($register_hash, "client_revision", $client_revision);
581 &add_content2xml_hash($register_hash, "gotoHardwareChecksum", $gotoHardwareChecksum);
582 &add_content2xml_hash($register_hash, "key_lifetime", $server_key_lifetime);
584 # Add $HOSTNAME from ENV if force-hostname is set
585 if( defined($client_force_hostname) && $client_force_hostname eq "true") {
586 if(defined($ENV{HOSTNAME}) && length($ENV{HOSTNAME}) >0 ) {
587 &add_content2xml_hash($register_hash, "force-hostname", $ENV{HOSTNAME});
588 } else {
589 &main::daemon_log("force-hostname was set to true, but no \$HOSTNAME was found in Environment!",0);
590 }
591 }
593 # send xml hash to server with general server passwd
594 my $res = &send_msg_hash_to_target($register_hash, $server, $default_server_key);
596 # if delivery of registration msg succeed
597 if($res eq "0") {
598 # reset try_to_register
599 $try_to_register = 0;
601 # Set fixed client address and mac address
602 $client_ip= &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
603 $client_address= "$client_ip:$client_port";
604 $client_mac_address = $local_mac;
605 $client_dnsname = $dnsname;
606 last;
608 # delivery of registration msg failed
609 } else {
610 # wait 1 sec until trying to register again
611 sleep(1);
612 next;
613 }
615 } # end of while
616 # one circle through all servers finished and no registration succeed
617 if ( $try_to_register >= @servers ) {
618 &write_to_file("gosa-si-no-server-available", $fai_logpath);
619 $kernel->delay_set('register_at_gosa_si_server', $delay_set_time);
621 # delivery of registraion msg succeed, waiting for server response
622 } else {
623 daemon_log("INFO: waiting for msg 'register_at_gosa_si_server'",5);
624 $kernel->delay_set('register_at_gosa_si_server', $delay_set_time);
625 # clear old settings and set it again
626 $kernel->delay('trigger_new_key');
627 $kernel->delay_set('trigger_new_key', $server_key_lifetime);
628 }
630 }
631 return;
632 }
635 sub check_key_and_xml_validity {
636 my ($crypted_msg, $module_key) = @_;
638 my $msg;
639 my $msg_hash;
640 eval{
641 $msg = &decrypt_msg($crypted_msg, $module_key);
642 &main::daemon_log("decrypted_msg: \n$msg", 9);
644 $msg_hash = $xml->XMLin($msg, ForceArray=>1);
646 ##############
647 # check header
648 my $header_l = $msg_hash->{'header'};
649 if( 1 != @{$header_l} ) {
650 die 'no or more headers specified';
651 }
652 my $header = @{$header_l}[0];
653 if( 0 == length $header) {
654 die 'header has length 0';
655 }
657 ##############
658 # check source
659 my $source_l = $msg_hash->{'source'};
660 if( 1 != @{$source_l} ) {
661 die 'no or more than 1 sources specified';
662 }
663 my $source = @{$source_l}[0];
664 if( 0 == length $source) {
665 die 'source has length 0';
666 }
667 unless( $source =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ) {
668 die "source '$source' is neither a complete ip-address with port nor 'GOSA'";
669 }
671 ##############
672 # check target
673 my $target_l = $msg_hash->{'target'};
674 if( 1 != @{$target_l} ) {
675 die 'no or more than 1 targets specified ';
676 }
677 my $target = @{$target_l}[0];
678 if( 0 == length $target) {
679 die 'target has length 0 ';
680 }
681 unless( $target =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ){
682 die "source is neither a complete ip-address with port nor 'GOSA'";
683 }
684 };
685 if($@) {
686 &main::daemon_log("WARNING: do not understand the message or msg is not gosa-si envelope conform:", 5);
687 &main::daemon_log("$@", 8);
688 $msg = undef;
689 $msg_hash = undef;
690 }
692 return ($msg, $msg_hash);
693 }
696 sub check_outgoing_xml_validity {
697 my ($msg) = @_;
699 my $msg_hash;
700 eval{
701 $msg_hash = $xml->XMLin($msg, ForceArray=>1);
703 ##############
704 # check header
705 my $header_l = $msg_hash->{'header'};
706 if( 1 != @{$header_l} ) {
707 die 'no or more than one headers specified';
708 }
709 my $header = @{$header_l}[0];
710 if( 0 == length $header) {
711 die 'header has length 0';
712 }
714 ##############
715 # check source
716 my $source_l = $msg_hash->{'source'};
717 if( 1 != @{$source_l} ) {
718 die 'no or more than 1 sources specified';
719 }
720 my $source = @{$source_l}[0];
721 if( 0 == length $source) {
722 die 'source has length 0';
723 }
724 unless( $source =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ||
725 $source =~ /^GOSA$/i ) {
726 die "source '$source' is neither a complete ip-address with port";
727 }
729 ##############
730 # check target
731 my $target_l = $msg_hash->{'target'};
732 if( 1 != @{$target_l} ) {
733 die "no or more than one targets specified";
734 }
735 foreach my $target (@$target_l) {
736 if( 0 == length $target) {
737 die "target has length 0";
738 }
739 unless( $target =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ) {
740 die "target '$target' is not a complete ip-address with port or a valid target name";
741 }
742 }
743 };
744 if($@) {
745 daemon_log("WARNING: outgoing msg is not gosa-si envelope conform", 5);
746 daemon_log("$@ $msg", 8);
747 $msg_hash = undef;
748 }
749 return ($msg_hash);
750 }
753 sub trigger_new_key {
754 my ($kernel) = $_[KERNEL] ;
756 my $msg = "<xml><header>new_key</header><source>$client_address</source><target>$client_address</target></xml>";
757 &send_msg_to_target($msg, $client_address, $server_key, 'new_key');
759 $kernel->delay_set('trigger_new_key', $server_key_lifetime);
760 }
763 sub trigger_logged_in_users_report {
764 my ($kernel) = $_[KERNEL] ;
766 # just do if client is registered already
767 if( $REGISTERED ) {
768 my $result = qx(/usr/bin/users);
769 my @logged_in_user_list;
770 if( defined $result ) {
771 chomp($result);
772 @logged_in_user_list = split(/\s/, $result);
773 }
775 system("echo 'CURRENTLY_LOGGED_IN ".join(" ", @logged_in_user_list)."' > /var/run/gosa-si-client.socket");
776 $kernel->delay_set('trigger_logged_in_users_report', $trigger_logged_in_users_report_delay);
777 } else {
778 # try it in 10 sec again
779 $kernel->delay_set('trigger_logged_in_users_report', 10);
780 }
781 }
784 sub trigger_seen_messages {
785 my ($kernel) = $_[KERNEL] ;
787 # Select all files under /tmp with prefix 'goto_notify'
788 my $goto_dir = "/tmp";
789 opendir(DIR, $goto_dir);
790 my @goto_files = grep { /^goto_notify_/ && -f "$goto_dir/$_" } readdir(DIR);
791 closedir DIR;
793 # Check if file has 'seen' tag
794 foreach my $goto_file (@goto_files) {
795 open(FILE, "$goto_dir/$goto_file");
796 my @lines = <FILE>;
797 close FILE;
799 my $source;
800 my $target;
801 my $usr;
802 my $subject;
803 my $message;
804 my $seen = 0;
805 chomp(@lines);
806 foreach my $line (@lines) {
807 if ($line =~ /^source:([\S\s]*)$/) {
808 $source = $1
809 }
810 if ($line =~ /^target:([\S\s]*)$/) {
811 $target = $1;
812 }
813 if ($line =~ /^usr:([\S\s]*)$/) {
814 $usr = $1;
815 }
816 if ($line =~ /^subject:([\S\s]*)$/) {
817 $subject = $1;
818 }
819 if ($line =~ /^message:([\S\s]*)$/) {
820 $message = $1;
821 }
822 if ($line =~ /^seen$/) {
823 $seen++;
824 }
825 }
827 # Send 'confirm_usr_msg' back to msg-hosting server
828 if ($seen) {
829 my %data = ('usr'=>$usr, 'subject'=>$subject, 'message'=>$message);
830 my $confirm_msg = &build_msg("confirm_usr_msg", $target, $source, \%data);
831 my $send_error = &send_msg_to_target($confirm_msg, $server_address, $server_key);
833 # Delete file
834 if (not $send_error) {
835 system("rm $goto_dir/$goto_file");
836 }
837 }
838 }
840 $kernel->delay_set('trigger_seen_messages', $trigger_seen_messages_delay);
842 return;
843 }
846 sub generic_file_error {
847 my ( $heap, $operation, $errno, $error_string, $wheel_id ) =
848 @_[ HEAP, ARG0, ARG1, ARG2, ARG3 ];
850 my $service = $heap->{services}->{$wheel_id};
851 daemon_log("ERROR: '$service' watcher $operation error $errno: $error_string", 1);
852 daemon_log("ERROR: shutting down '$service' file watcher", 1);
854 delete $heap->{services}->{$wheel_id};
855 delete $heap->{watchers}->{$wheel_id};
856 return;
857 }
860 sub fifo_got_record {
861 my $file_record = $_[ARG0];
862 my $header;
863 my $content = "";
864 daemon_log("DEBUG: fifo got record: $file_record", 7);
866 $file_record =~ /^(\S+)[ ]?([\s\S]+)?$/;
867 if( defined $1 ) {
868 $header = $1;
869 } else {
870 return;
871 }
873 if( defined $2 ) {
874 $content = $2;
875 }
877 my $clmsg_hash = &create_xml_hash("CLMSG_$header", $client_address, $server_address, $content);
878 &add_content2xml_hash($clmsg_hash, "macaddress", $client_mac_address);
879 my $utc_ts = &main::get_utc_time();
880 &add_content2xml_hash($clmsg_hash, "timestamp", $utc_ts);
881 my $clmsg = &create_xml_string($clmsg_hash);
882 &send_msg_to_target($clmsg, $server_address, $server_key, "CLMSG_$header");
884 # if installation finished, save all log files
885 if ($file_record eq "TASKBEGIN finish") {
886 &save_fai_log($fai_log_dir);
887 }
889 return;
890 }
893 sub save_fai_log {
894 my ($fai_log_dir) = @_ ;
895 my $FAI_DIR;
897 # Directory for log files after a softupdate
898 my $log_dir = File::Spec->catdir($fai_log_dir, "localhost/last");
900 if (not -d $log_dir) {
901 # Directory for log files after a new installation
902 $log_dir = "/tmp/fai";
903 if (not -d $log_dir) {
904 daemon_log("ERROR: cannot open directory $log_dir", 1);
905 return;
906 }
907 }
909 opendir($FAI_DIR, "$log_dir");
910 my @log_files = readdir($FAI_DIR);
911 closedir($FAI_DIR);
913 my @log_list;
914 foreach my $log_file (@log_files) {
915 if( $log_file eq "." || $log_file eq ".." ) { next; }
917 my $log = "log_file:$log_file:";
918 $log_file = File::Spec->catfile( $log_dir, $log_file );
920 if (not -f $log_file) {
921 daemon_log("ERROR: cannot read $log_file", 1);
922 next;
923 }
925 open(FILE, "<$log_file");
926 my @lines = <FILE> ;
927 close (FILE);
928 my $log_string = join("", @lines);
929 $log .= &encode_base64($log_string);
930 push(@log_list, $log);
931 }
933 my $all_log_string = join("\n", @log_list);
934 my $msg_hash = &create_xml_hash("CLMSG_save_fai_log", $client_address, $server_address, $all_log_string);
935 &add_content2xml_hash($msg_hash, "macaddress", $client_mac_address);
936 my $msg = &create_xml_string($msg_hash);
937 &send_msg_to_target($msg, $server_address, $server_key, "CLMSG_save_fai_log");
939 }
942 sub sig_handler {
943 my ($kernel, $signal) = @_[KERNEL, ARG0] ;
944 daemon_log("0 INFO got signal '$signal'", 1);
945 $kernel->sig_handled();
946 return;
947 }
950 sub _start {
951 my ($kernel, $heap) = @_[KERNEL, HEAP];
952 $kernel->alias_set('client_session');
953 $global_kernel = $kernel; # this is used to throw events at each point of the skript
955 $kernel->sig(USR1 => "sig_handler");
957 # force a registration at a gosa-si-server
958 $kernel->yield('register_at_gosa_si_server');
960 # install all file watcher defined
961 while( my($name, $file) = each %files_to_watch ) {
962 my $watcher = POE::Wheel::FollowTail->new(
963 Filename => $file,
964 InputEvent => $name."_record",
965 # ResetEvent => "file_reset",
966 ErrorEvent => "file_error",
967 );
968 # $heap->{tail} = POE::Wheel::Run->new(
969 # Program => [ "/usr/bin/tail", "-f", $file ],
970 # StdoutEvent => $file_name."_record",
971 # );
972 $heap->{services}->{ $watcher->ID } = $name;
973 $heap->{watchers}->{ $watcher->ID } = $watcher;
974 }
975 $kernel->yield('trigger_logged_in_users_report');
976 $kernel->yield('trigger_seen_messages');
977 }
980 sub _default {
981 daemon_log("ERROR: can not handle incoming msg with header '$_[ARG0]'", 1);
982 return;
983 }
986 sub server_input {
987 my ($kernel, $heap, $input, $wheel) = @_[KERNEL, HEAP, ARG0, ARG1];
988 my $remote_ip = $heap->{'remote_ip'},
989 my $error = 0;
990 my $answer;
993 daemon_log("INFO: Incoming msg from '$remote_ip'", 5);
994 daemon_log("DEBUG: Incoming msg:\n$input\n", 9);
996 my ($msg, $msg_hash) = &check_key_and_xml_validity($input, $server_key);
997 if( (!$msg) || (!$msg_hash) ) {
998 daemon_log("WARNING: Deciphering of incoming msg failed", 3);
999 if($server_address =~ /$remote_ip/) {
1000 # got a msg from gosa-si-server which can not be decrypted, may the secrete not up-to-date
1001 # cause a reregistering with a new secrete handshake
1002 daemon_log("WARNING: Message from gosa-si-server could not be understood, cause reregistering at server", 3);
1004 # if client is alread in a registration process, that means not registered, do nothing
1005 # if not, cause re-registration
1006 if (not $REGISTERED) {
1007 &daemon_log("WARNING: gosa-si-client is already in a registration process so ignore this message", 3);
1008 } else {
1009 $REGISTERED = 0;
1010 $kernel->post('client_session', 'register_at_gosa_si_server');
1011 }
1012 }
1013 $error++;
1014 }
1017 ######################
1018 # process incoming msg
1019 if( $error == 0 ) {
1020 my $header = @{$msg_hash->{header}}[0];
1021 my $source = @{$msg_hash->{source}}[0];
1023 if( exists $event_hash->{$header} ) {
1025 # a event exists with the header as name
1026 daemon_log("INFO: found event '$header' at event-module '".$event_hash->{$header}."'", 5);
1027 no strict 'refs';
1028 $answer = &{$event_hash->{$header}."::$header"}($msg, $msg_hash);
1029 }
1030 else {
1031 daemon_log("WARNING: no event '$header' found in event modules under $event_dir", 3);
1032 }
1033 }
1035 ########
1036 # answer
1037 if( $answer ) {
1039 #check gosa-si envelope validity
1040 my $answer_hash = &check_outgoing_xml_validity($answer);
1042 if( $answer_hash ) {
1043 # answer is valid
1045 # preprocessing
1046 if( $answer =~ "<header>registered</header>") {
1047 # set registered flag to true to stop sending further registered msgs
1048 $REGISTERED = 1;
1049 }
1050 else {
1051 $answer =~ /<header>(\S+)<\/header>/;
1052 &send_msg_to_target($answer, $server_address, $server_key, $1);
1053 }
1055 # postprocessing
1056 if( $answer =~ "<header>new_key</header>") {
1057 # set new key to global variable
1058 $answer =~ /<new_key>(\S*?)<\/new_key>/;
1059 my $new_key = $1;
1060 $server_key = $new_key;
1061 }
1062 }
1064 }
1066 return;
1067 }
1070 #==== MAIN = main ==============================================================
1071 # parse commandline options
1072 Getopt::Long::Configure( "bundling" );
1073 GetOptions("h|help" => \&usage,
1074 "c|config=s" => \$cfg_file,
1075 "f|foreground" => \$foreground,
1076 "v|verbose+" => \$verbose,
1077 );
1079 # read and set config parameters
1080 &check_cmdline_param ;
1081 &read_configfile($cfg_file, %cfg_defaults);
1082 &check_pid;
1085 # forward error messages to logfile
1086 if ( ! $foreground ) {
1087 open( STDIN, '+>/dev/null' );
1088 open( STDOUT, '+>&STDIN' );
1089 open( STDERR, '+>&STDIN' );
1090 }
1092 # Just fork, if we are not in foreground mode
1093 if( ! $foreground ) {
1094 chdir '/' or die "Can't chdir to /: $!";
1095 $pid = fork;
1096 setsid or die "Can't start a new session: $!";
1097 umask 0;
1098 } else {
1099 $pid = $$;
1100 }
1102 # Do something useful - put our PID into the pid_file
1103 if( 0 != $pid ) {
1104 open( LOCK_FILE, ">$pid_file" );
1105 print LOCK_FILE "$pid\n";
1106 close( LOCK_FILE );
1107 if( !$foreground ) {
1108 exit( 0 )
1109 };
1110 }
1112 # parse head url and revision from svn
1113 my $client_status_hash = { 'developmental'=>'revision', 'stable'=>'release'};
1114 $client_version =~ /^\$HeadURL: (\S+) \$:\$Rev: (\d+) \$$/;
1115 $client_headURL = defined $1 ? $1 : 'unknown' ;
1116 $client_revision = defined $2 ? $2 : 'unknown' ;
1117 if ($client_headURL =~ /\/tag\// ||
1118 $client_headURL =~ /\/branches\// ) {
1119 $client_status = "stable";
1120 } else {
1121 $client_status = "developmental" ;
1122 }
1124 # Prepare log file
1125 my $root_uid = getpwnam('root');
1126 my $adm_gid = getgrnam('adm');
1127 chmod(0640, $log_file);
1128 chown($root_uid, $adm_gid, $log_file);
1131 daemon_log(" ", 1);
1132 daemon_log("$prg started!", 1);
1133 daemon_log("INFO: status: $client_status", 1);
1134 daemon_log("INFO: ".$client_status_hash->{$client_status}.": $client_revision", 1);
1136 # delete old DBsqlite lock files
1137 system('rm -f /tmp/gosa_si_lock*gosa-si-client*');
1139 # detect ip and mac address and complete host address
1140 $client_address = $client_ip.":".$client_port;
1141 my $network_interface= &get_interface_for_ip($client_ip);
1142 $client_mac_address= &get_mac($network_interface);
1143 daemon_log("INFO: ip address detected: $client_ip", 1);
1144 daemon_log("INFO: gosa-si-client mac address detected: $client_mac_address", 1);
1147 # import events
1148 my ($error, $result, $tmp_hash) = &import_events($event_dir);
1149 while (my ($module, $mod_event_hash) = each %$tmp_hash) {
1150 while (my ($event_name, $nothing) = each %$mod_event_hash) {
1151 $event_hash->{$event_name} = $module;
1152 }
1153 }
1155 foreach my $log_line (@$result) {
1156 if ($log_line =~ / succeed: /) {
1157 &main::daemon_log("0 DEBUG: $log_line", 7);
1158 } else {
1159 &main::daemon_log("0 ERROR: $log_line", 1);
1160 }
1161 }
1164 # compute hardware checksum
1165 $gotoHardwareChecksum= &generate_hw_digest();
1166 daemon_log("INFO: gotoHardwareChecksum detected: $gotoHardwareChecksum", 1);
1169 # create socket for incoming xml messages
1170 POE::Component::Server::TCP->new(
1171 Alias => 'gosa-si-client',
1172 Port => $client_port,
1173 ClientInput => \&server_input,
1174 );
1175 daemon_log("INFO: start socket for incoming xml messages at port '$client_port' ", 1);
1178 # prepare variables
1179 if( inet_aton($server_ip) ){ $server_ip = inet_ntoa(inet_aton($server_ip)); }
1180 if (defined $server_ip && defined $server_port) {
1181 $server_address = $server_ip.":".$server_port;
1182 }
1183 $xml = new XML::Simple();
1184 $default_server_key = $server_key;
1187 # add gosa-si-server address from config file at first position of server list
1188 my $server_check_cfg = Config::IniFiles->new( -file => $cfg_file );
1189 my $server_check = (defined($server_check_cfg))?$server_check_cfg->val( "server", "ip"):undef;
1190 if( defined $server_check ) {
1191 unshift(@servers, $server_address);
1192 my $servers_string = join(", ", @servers);
1193 daemon_log("INFO: found servers in configuration file: $servers_string", 1);
1194 } else {
1195 my @tmp_servers;
1196 if ( !$server_domain) {
1197 # Try our DNS Searchlist
1198 my @domain_list = &get_dns_domains();
1199 my $tmp_domains;
1200 my $error_string;
1201 for my $domain (@domain_list) {
1202 chomp($domain);
1203 ($tmp_domains, $error_string) = &get_server_addresses($domain);
1204 if(@$tmp_domains) {
1205 for my $tmp_server(@$tmp_domains) {
1206 push @tmp_servers, $tmp_server;
1207 }
1208 }
1209 }
1210 if (0 == @tmp_servers) {
1211 my $log_string = "no gosa-si-server found!";
1212 $log_string .= "\n\tdetermined domains out of /etc/resolv.conf: ".join(", ", @domain_list) if (@domain_list);
1213 $log_string .= "\n\tdetermined server addresses in domains: ".join(", ",@$tmp_domains) if (defined($tmp_domains));
1214 daemon_log("ERROR: $log_string", 1) if (defined($log_string));
1215 daemon_log("ERROR: $error_string", 1) if (defined($error_string));
1216 daemon_log("ERROR: please specify a gosa-si-server address or a domain in config file", 1);
1217 kill 2, $$;
1218 }
1219 } else {
1220 @tmp_servers = &get_server_addresses($server_domain);
1221 if( 0 == @tmp_servers ) {
1222 daemon_log("ERROR: no gosa-si-server found in DNS for domain '$server_domain'",1);
1223 daemon_log("ERROR: please specify a gosa-si-server address or a domain in config file", 1);
1224 kill 2, $$;
1225 }
1226 }
1228 foreach my $server (@tmp_servers) {
1229 unshift(@servers, $server);
1230 }
1231 my $servers_string = join(", ", @servers);
1232 daemon_log("INFO: found servers in DNS: $servers_string", 1);
1233 }
1236 # open fifo for non-gosa-si-client-msgs to gosa-si-server
1237 POSIX::mkfifo("$gosa_si_client_fifo", "0600");
1240 POE::Session->create(
1241 inline_states => {
1242 _start => \&_start,
1243 _default => \&_default,
1244 sig_handler => \&sig_handler,
1245 register_at_gosa_si_server => \®ister_at_gosa_si_server,
1247 # trigger periodical tasks
1248 trigger_new_key => \&trigger_new_key,
1249 trigger_logged_in_users_report => \&trigger_logged_in_users_report,
1250 trigger_seen_messages => \&trigger_seen_messages,
1252 # handle records from each defined file differently
1253 fifo_record => \&fifo_got_record,
1255 # handle file resets and errors the same way for each file
1256 file_reset => \&generic_file_reset,
1257 file_error => \&generic_file_error,
1258 }
1259 );
1261 POE::Kernel->run();
1262 exit;