9c7e09e2f793d9df08149138d7b8ef61140956c6
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 n seconds the client reports logged_in users to gosa-si-server
87 my $trigger_logged_in_users_report_delay = 600;
89 # all n seconds the client reports messages seen by user
90 my $trigger_seen_messages_delay = 30;
92 # directory where all log files from installation are stored
93 my $fai_log_dir = "/var/log/fai";
95 %cfg_defaults = (
96 "general" =>
97 {"log-file" => [\$log_file, "/var/run/".$prg.".log"],
98 "pid-file" => [\$pid_file, "/var/run/".$prg.".pid"],
99 "opts-file" => [\$opts_file, "/var/run/".$prg.".opts"],
100 },
101 "client" =>
102 {"port" => [\$client_port, "20083"],
103 "ip" => [\$client_ip, "0.0.0.0"],
104 "mac-address" => [\$client_mac_address, "00:00:00:00:00:00"],
105 "server-domain" => [\$server_domain, ""],
106 "ldap" => [\$ldap_enabled, 1],
107 "ldap-config" => [\$ldap_config, "/etc/ldap/ldap.conf"],
108 "pam-config" => [\$pam_config, "/etc/pam_ldap.conf"],
109 "nss-config" => [\$nss_config, "/etc/libnss-ldap.conf"],
110 "fai-logpath" => [\$fai_logpath, "/var/log/fai/fai.log"],
111 "force-hostname" => [\$client_force_hostname, "false"],
112 },
113 "server" => {
114 "ip" => [\$server_ip, "127.0.0.1"],
115 "port" => [\$server_port, "20081"],
116 "key" => [\$server_key, ""],
117 "timeout" => [\$server_timeout, 10],
118 "key-lifetime" => [\$server_key_lifetime, 600],
119 },
121 );
124 #=== FUNCTIONS = functions =====================================================
126 sub usage {
127 print STDERR << "EOF" ;
128 usage: $prg [-hvf] [-c config]
130 -h : this (help) message
131 -c <file> : config file
132 -f : foreground, process will not be forked to background
133 -v : be verbose (multiple to increase verbosity)
135 EOF
136 print "\n" ;
137 }
139 #=== FUNCTION ================================================================
140 # NAME: check_cmdline_param
141 # PARAMETERS:
142 # RETURNS:
143 # DESCRIPTION:
144 #===============================================================================
145 sub check_cmdline_param () {
146 my $err_config;
147 my $err_counter = 0;
148 if(not defined($cfg_file)) {
149 $cfg_file = "/etc/gosa-si/client.conf";
150 if(! -r $cfg_file) {
151 $err_config = "please specify a config file";
152 $err_counter += 1;
153 }
154 }
155 if( $err_counter > 0 ) {
156 &usage( "", 1 );
157 if( defined( $err_config)) { print STDERR "$err_config\n"}
158 print STDERR "\n";
159 exit( -1 );
160 }
161 }
164 #=== FUNCTION ================================================================
165 # NAME: check_pid
166 # PARAMETERS:
167 # RETURNS:
168 # DESCRIPTION:
169 #===============================================================================
170 sub check_pid {
171 $pid = -1;
172 # Check, if we are already running
173 if( open(LOCK_FILE, "<$pid_file") ) {
174 $pid = <LOCK_FILE>;
175 if( defined $pid ) {
176 chomp( $pid );
177 if( -f "/proc/$pid/stat" ) {
178 my($stat) = `cat /proc/$pid/stat` =~ m/$pid \((.+)\).*/;
179 if( $0 eq $stat ) {
180 close( LOCK_FILE );
181 exit -1;
182 }
183 }
184 }
185 close( LOCK_FILE );
186 unlink( $pid_file );
187 }
189 # create a syslog msg if it is not to possible to open PID file
190 if (not sysopen(LOCK_FILE, $pid_file, O_WRONLY|O_CREAT|O_EXCL, 0644)) {
191 my($msg) = "Couldn't obtain lockfile '$pid_file' ";
192 if (open(LOCK_FILE, '<', $pid_file)
193 && ($pid = <LOCK_FILE>))
194 {
195 chomp($pid);
196 $msg .= "(PID $pid)\n";
197 } else {
198 $msg .= "(unable to read PID)\n";
199 }
200 if( ! ($foreground) ) {
201 openlog( $0, "cons,pid", "daemon" );
202 syslog( "warning", $msg );
203 closelog();
204 }
205 else {
206 print( STDERR " $msg " );
207 }
208 exit( -1 );
209 }
210 }
213 sub sig_int_handler {
214 my ($signal) = @_;
216 daemon_log("shutting down gosa-si-client", 1);
217 system("kill `ps -C gosa-si-client -o pid=`");
218 }
219 $SIG{INT} = \&sig_int_handler;
222 #=== FUNCTION ================================================================
223 # NAME: logging
224 # PARAMETERS: level - string - default 'info'
225 # msg - string -
226 # facility - string - default 'LOG_DAEMON'
227 # RETURNS:
228 # DESCRIPTION:
229 #===============================================================================
230 sub daemon_log {
231 # log into log_file
232 my( $msg, $level ) = @_;
233 if(not defined $msg) { return }
234 if(not defined $level) { $level = 1 }
235 if(defined $log_file){
236 open(LOG_HANDLE, ">>$log_file");
237 if(not defined open( LOG_HANDLE, ">>$log_file" )) {
238 print STDERR "cannot open $log_file: $!";
239 return
240 }
241 chomp($msg);
242 if($level <= $verbose){
243 my ($seconds, $minutes, $hours, $monthday, $month,
244 $year, $weekday, $yearday, $sommertime) = localtime(time);
245 $hours = $hours < 10 ? $hours = "0".$hours : $hours;
246 $minutes = $minutes < 10 ? $minutes = "0".$minutes : $minutes;
247 $seconds = $seconds < 10 ? $seconds = "0".$seconds : $seconds;
248 my @monthnames = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
249 $month = $monthnames[$month];
250 $monthday = $monthday < 10 ? $monthday = "0".$monthday : $monthday;
251 $year+=1900;
253 my $log_msg = "$month $monthday $hours:$minutes:$seconds $prg $msg\n";
254 print LOG_HANDLE $log_msg;
255 if( $foreground ) {
256 print STDERR $log_msg;
257 }
258 }
259 close( LOG_HANDLE );
260 }
261 }
264 #=== FUNCTION ================================================================
265 # NAME: get_mac
266 # PARAMETERS: interface name (i.e. eth0)
267 # RETURNS: (mac address)
268 # DESCRIPTION: Uses ioctl to get mac address directly from system.
269 #===============================================================================
270 sub get_mac {
271 my $ifreq= shift;
272 my $result;
273 if ($ifreq && length($ifreq) > 0) {
274 if($ifreq eq "all") {
275 if(defined($server_ip)) {
276 $result = &get_local_mac_for_remote_ip($server_ip);
277 }
278 elsif ($client_mac_address && length($client_mac_address) > 0 && !($client_mac_address eq "00:00:00:00:00:00")){
279 $result = &client_mac_address;
280 }
281 else {
282 $result = "00:00:00:00:00:00";
283 }
284 } else {
285 my $SIOCGIFHWADDR= 0x8927; # man 2 ioctl_list
287 # A configured MAC Address should always override a guessed value
288 if ($client_mac_address and length($client_mac_address) > 0 and not($client_mac_address eq "00:00:00:00:00:00")) {
289 $result= $client_mac_address;
290 }
291 else {
292 socket SOCKET, PF_INET, SOCK_DGRAM, getprotobyname('ip')
293 or die "socket: $!";
295 if(ioctl SOCKET, $SIOCGIFHWADDR, $ifreq) {
296 my ($if, $mac)= unpack 'h36 H12', $ifreq;
298 if (length($mac) > 0) {
299 $mac=~ m/^([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])$/;
300 $mac= sprintf("%s:%s:%s:%s:%s:%s", $1, $2, $3, $4, $5, $6);
301 $result = $mac;
302 }
303 }
304 }
305 }
306 }
307 return $result;
308 }
312 #=== FUNCTION ================================================================
313 # NAME: get_local_mac_for_remote_ip
314 # PARAMETERS: none (takes server_ip from global variable)
315 # RETURNS: (ip address from interface that is used for communication)
316 # DESCRIPTION: Uses ioctl to get routing table from system, checks which entry
317 # matches (defaultroute last).
318 #===============================================================================
319 sub get_local_mac_for_remote_ip {
320 my $server_ip= shift;
321 my $result= "00:00:00:00:00:00";
323 if($server_ip =~ /^(\d\d?\d?\.){3}\d\d?\d?$/) {
324 my $PROC_NET_ROUTE= ('/proc/net/route');
326 open(PROC_NET_ROUTE, "<$PROC_NET_ROUTE")
327 or die "Could not open $PROC_NET_ROUTE";
329 my @ifs = <PROC_NET_ROUTE>;
331 close(PROC_NET_ROUTE);
333 # Eat header line
334 shift @ifs;
335 chomp @ifs;
336 foreach my $line(@ifs) {
337 my ($Iface,$Destination,$Gateway,$Flags,$RefCnt,$Use,$Metric,$Mask,$MTU,$Window,$IRTT)=split(/\s/, $line);
338 my $destination;
339 my $mask;
340 my ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Destination);
341 $destination= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
342 ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Mask);
343 $mask= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
344 if(new NetAddr::IP($server_ip)->within(new NetAddr::IP($destination, $mask))) {
345 # destination matches route, save mac and exit
346 $result= &get_mac($Iface);
347 last;
348 }
349 }
350 } else {
351 daemon_log("get_local_mac_for_remote_ip was called with a non-ip parameter: $server_ip", 1);
352 }
353 return $result;
354 }
357 sub generate_hw_digest {
358 my $hw_data;
359 foreach my $line (split /\n/, `cat /proc/bus/pci/devices`) {
360 $hw_data.= sprintf "%s", $line =~ /[^\s]+\s([^\s]+)\s.*/;
361 }
362 return(md5_base64($hw_data));
363 }
366 sub create_ciphering {
367 my ($passwd) = @_;
368 if((!defined($passwd)) || length($passwd)==0) {
369 $passwd = "";
370 }
371 $passwd = substr(md5_hex("$passwd") x 32, 0, 32);
372 my $iv = substr(md5_hex('GONICUS GmbH'),0, 16);
373 my $my_cipher = Crypt::Rijndael->new($passwd , Crypt::Rijndael::MODE_CBC());
374 $my_cipher->set_iv($iv);
375 return $my_cipher;
376 }
379 sub encrypt_msg {
380 my ($msg, $key) = @_;
381 my $my_cipher = &create_ciphering($key);
382 my $len;
383 {
384 use bytes;
385 $len= 16-length($msg)%16;
386 }
387 $msg = "\0"x($len).$msg;
388 $msg = $my_cipher->encrypt($msg);
389 chomp($msg = &encode_base64($msg));
390 # there are no newlines allowed inside msg
391 $msg=~ s/\n//g;
392 return $msg;
393 }
396 sub decrypt_msg {
398 my ($msg, $key) = @_ ;
399 $msg = &decode_base64($msg);
400 my $my_cipher = &create_ciphering($key);
401 $msg = $my_cipher->decrypt($msg);
402 $msg =~ s/\0*//g;
403 return $msg;
404 }
407 #=== FUNCTION ================================================================
408 # NAME: send_msg_hash_to_target
409 # PARAMETERS: msg_hash - hash - xml_hash created with function create_xml_hash
410 # PeerAddr string - socket address to send msg
411 # PeerPort string - socket port, if not included in socket address
412 # RETURNS: nothing
413 # DESCRIPTION: ????
414 #===============================================================================
415 sub send_msg_hash_to_target {
416 my ($msg_hash, $address, $encrypt_key) = @_ ;
417 my $msg = &create_xml_string($msg_hash);
418 my $header = @{$msg_hash->{'header'}}[0];
419 my $error = &send_msg_to_target($msg, $address, $encrypt_key, $header);
421 return $error;
422 }
425 sub send_msg_to_target {
426 my ($msg, $address, $encrypt_key, $msg_header) = @_ ;
427 my $error = 0;
429 if( $msg_header ) { $msg_header = "'$msg_header'-"; }
430 else { $msg_header = ""; }
432 # encrypt xml msg
433 my $crypted_msg = &encrypt_msg($msg, $encrypt_key);
435 # opensocket
436 my $socket = &open_socket($address);
437 if( !$socket ) {
438 daemon_log("WARNING: cannot send ".$msg_header."msg to $address , host not reachable", 3);
439 if ($REGISTERED == 1) {
440 $REGISTERED = 0; # if server is not available, cause reregistering
441 daemon_log("INFO: cause reregistering at gosa-si-server", 5);
442 $global_kernel->yield('register_at_gosa_si_server');
444 }
445 $error++;
446 }
448 # send xml msg
449 if( $error == 0 ) {
450 print $socket $crypted_msg."\n";
451 daemon_log("INFO: send ".$msg_header."msg to $address", 5);
452 daemon_log("DEBUG: message:\n$msg", 9);
453 }
455 # close socket in any case
456 if( $socket ) {
457 close $socket;
458 }
460 return $error;
461 }
464 sub write_to_file {
465 my ($string, $file) = @_;
466 my $error = 0;
468 if( not defined $file || not -f $file ) {
469 &main::daemon_log("ERROR: $prg: check '-f file' failed: $file", 1);
470 $error++;
471 }
472 if( not defined $string || 0 == length($string)) {
473 &main::daemon_log("ERROR: $prg: empty string to write to file '$file'", 1);
474 $error++;
475 }
477 if( $error == 0 ) {
479 chomp($string);
481 if (open(FILE, ">> $file")){
482 print FILE $string."\n";
483 close(FILE);
484 }
485 }
487 return;
488 }
491 sub open_socket {
492 my ($PeerAddr, $PeerPort) = @_ ;
493 if(defined($PeerPort)){
494 $PeerAddr = $PeerAddr.":".$PeerPort;
495 }
496 my $socket;
497 $socket = new IO::Socket::INET(PeerAddr => $PeerAddr,
498 Porto => "tcp",
499 Type => SOCK_STREAM,
500 Timeout => 5,
501 );
502 if(not defined $socket) {
503 return;
504 }
505 &daemon_log("DEBUG: open_socket: $PeerAddr", 7);
506 return $socket;
507 }
510 #=== FUNCTION ================================================================
511 # NAME: register_at_server
512 # PARAMETERS:
513 # RETURNS:
514 # DESCRIPTION:
515 #===============================================================================
516 sub register_at_gosa_si_server {
517 my ($kernel) = $_[KERNEL];
518 my $try_to_register = 0;
520 # if client is already registered, stop registration process
521 if ($REGISTERED) {
522 $kernel->delay('register_at_gosa_si_server');
524 # client is not registered, start registration process
525 } else {
526 # clear all other triggered events and wait till registration was successful
527 $kernel->delay('trigger_new_key');
529 # create new passwd and ciphering object for client-server communication
530 $server_key = &create_passwd();
532 my $events = join( ",", keys %{$event_hash} );
533 while(1) {
534 $try_to_register++;
536 # after one complete round through all server, stop trying to register
537 if( $try_to_register > @servers ) { last; }
539 # fetch first gosa-si-server from @servers
540 # append shifted gosa-si-server at the end of @servers, so looking for servers never stop if
541 # a registration never occured
542 my $server = shift(@servers);
543 push( @servers, $server );
545 # Check if our ip is resolvable - if not: don't try to register
546 if(!(defined($server) && $server =~ m/^[0-9\.]*?:.*$/)) {
547 &main::daemon_log("ERROR: Server with address '".defined($server)?$server:""."' is invalid!", 1);
548 if (length(@servers) == 1) {
549 &main::daemon_log("ERROR: No valid servers found!", 1);
550 exit(1);
551 }
552 }
554 # Check if our ip is resolvable - if not: don't try to register
555 my $ip= &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
556 my $dnsname= gethostbyaddr(inet_aton($ip), AF_INET);
557 if(!defined($dnsname)) {
558 if( defined($client_force_hostname) && $client_force_hostname eq "true") {
559 $dnsname = `hostname`;
560 } else {
561 &write_to_file("goto-error-dns:$ip", $fai_logpath);
562 &main::daemon_log("ERROR: ip is not resolvable, no registration possible. Write 'goto-error-dns:$ip' to $fai_logpath", 1);
563 exit(1);
564 }
565 }
567 # create registration msg
568 my $local_ip = &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
569 my $local_mac = &get_local_mac_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
570 my $register_hash = &create_xml_hash("here_i_am", $local_ip.":".$client_port, $server);
571 &add_content2xml_hash($register_hash, "new_passwd", $server_key);
572 &add_content2xml_hash($register_hash, "mac_address", $local_mac);
573 &add_content2xml_hash($register_hash, "events", $events);
574 &add_content2xml_hash($register_hash, "client_status", $client_status);
575 &add_content2xml_hash($register_hash, "client_revision", $client_revision);
576 &add_content2xml_hash($register_hash, "gotoHardwareChecksum", $gotoHardwareChecksum);
577 &add_content2xml_hash($register_hash, "key_lifetime", $server_key_lifetime);
579 # Add $HOSTNAME from ENV if force-hostname is set
580 if( defined($client_force_hostname) && $client_force_hostname eq "true") {
581 if(defined($ENV{HOSTNAME}) && length($ENV{HOSTNAME}) >0 ) {
582 &add_content2xml_hash($register_hash, "force-hostname", $ENV{HOSTNAME});
583 } else {
584 &main::daemon_log("force-hostname was set to true, but no \$HOSTNAME was found in Environment!",0);
585 }
586 }
588 # send xml hash to server with general server passwd
589 my $res = &send_msg_hash_to_target($register_hash, $server, $default_server_key);
591 # if delivery of registration msg succeed
592 if($res eq "0") {
593 # reset try_to_register
594 $try_to_register = 0;
596 # Set fixed client address and mac address
597 $client_ip= &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
598 $client_address= "$client_ip:$client_port";
599 $client_mac_address = $local_mac;
600 $client_dnsname = $dnsname;
601 last;
603 # delivery of registration msg failed
604 } else {
605 # wait 1 sec until trying to register again
606 sleep(1);
607 next;
608 }
610 } # end of while
611 # one circle through all servers finished and no registration succeed
612 if ( $try_to_register >= @servers ) {
613 &write_to_file("gosa-si-no-server-available", $fai_logpath);
614 $kernel->delay_set('register_at_gosa_si_server', $delay_set_time);
616 # delivery of registraion msg succeed, waiting for server response
617 } else {
618 daemon_log("INFO: waiting for msg 'register_at_gosa_si_server'",5);
619 $kernel->delay_set('register_at_gosa_si_server', $delay_set_time);
620 # clear old settings and set it again
621 $kernel->delay('trigger_new_key');
622 $kernel->delay_set('trigger_new_key', $server_key_lifetime);
623 }
625 }
626 return;
627 }
630 sub check_key_and_xml_validity {
631 my ($crypted_msg, $module_key) = @_;
633 my $msg;
634 my $msg_hash;
635 eval{
636 $msg = &decrypt_msg($crypted_msg, $module_key);
637 &main::daemon_log("decrypted_msg: \n$msg", 9);
639 $msg_hash = $xml->XMLin($msg, ForceArray=>1);
641 ##############
642 # check header
643 my $header_l = $msg_hash->{'header'};
644 if( 1 != @{$header_l} ) {
645 die 'no or more headers specified';
646 }
647 my $header = @{$header_l}[0];
648 if( 0 == length $header) {
649 die 'header has length 0';
650 }
652 ##############
653 # check source
654 my $source_l = $msg_hash->{'source'};
655 if( 1 != @{$source_l} ) {
656 die 'no or more than 1 sources specified';
657 }
658 my $source = @{$source_l}[0];
659 if( 0 == length $source) {
660 die 'source has length 0';
661 }
662 unless( $source =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ) {
663 die "source '$source' is neither a complete ip-address with port nor 'GOSA'";
664 }
666 ##############
667 # check target
668 my $target_l = $msg_hash->{'target'};
669 if( 1 != @{$target_l} ) {
670 die 'no or more than 1 targets specified ';
671 }
672 my $target = @{$target_l}[0];
673 if( 0 == length $target) {
674 die 'target has length 0 ';
675 }
676 unless( $target =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ){
677 die "source is neither a complete ip-address with port nor 'GOSA'";
678 }
679 };
680 if($@) {
681 &main::daemon_log("WARNING: do not understand the message or msg is not gosa-si envelope conform:", 5);
682 &main::daemon_log("$@", 8);
683 $msg = undef;
684 $msg_hash = undef;
685 }
687 return ($msg, $msg_hash);
688 }
691 sub check_outgoing_xml_validity {
692 my ($msg) = @_;
694 my $msg_hash;
695 eval{
696 $msg_hash = $xml->XMLin($msg, ForceArray=>1);
698 ##############
699 # check header
700 my $header_l = $msg_hash->{'header'};
701 if( 1 != @{$header_l} ) {
702 die 'no or more than one headers specified';
703 }
704 my $header = @{$header_l}[0];
705 if( 0 == length $header) {
706 die 'header has length 0';
707 }
709 ##############
710 # check source
711 my $source_l = $msg_hash->{'source'};
712 if( 1 != @{$source_l} ) {
713 die 'no or more than 1 sources specified';
714 }
715 my $source = @{$source_l}[0];
716 if( 0 == length $source) {
717 die 'source has length 0';
718 }
719 unless( $source =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ||
720 $source =~ /^GOSA$/i ) {
721 die "source '$source' is neither a complete ip-address with port";
722 }
724 ##############
725 # check target
726 my $target_l = $msg_hash->{'target'};
727 if( 1 != @{$target_l} ) {
728 die "no or more than one targets specified";
729 }
730 foreach my $target (@$target_l) {
731 if( 0 == length $target) {
732 die "target has length 0";
733 }
734 unless( $target =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ) {
735 die "target '$target' is not a complete ip-address with port or a valid target name";
736 }
737 }
738 };
739 if($@) {
740 daemon_log("WARNING: outgoing msg is not gosa-si envelope conform", 5);
741 daemon_log("$@ $msg", 8);
742 $msg_hash = undef;
743 }
744 return ($msg_hash);
745 }
748 sub trigger_new_key {
749 my ($kernel) = $_[KERNEL] ;
751 my $msg = "<xml><header>new_key</header><source>$client_address</source><target>$client_address</target></xml>";
752 &send_msg_to_target($msg, $client_address, $server_key, 'new_key');
754 $kernel->delay_set('trigger_new_key', $server_key_lifetime);
755 }
758 sub trigger_logged_in_users_report {
759 my ($kernel) = $_[KERNEL] ;
761 # just do if client is registered already
762 if( $REGISTERED ) {
763 my $result = qx(/usr/bin/users);
764 my @logged_in_user_list;
765 if( defined $result ) {
766 chomp($result);
767 @logged_in_user_list = split(/\s/, $result);
768 }
770 system("echo 'CURRENTLY_LOGGED_IN ".join(" ", @logged_in_user_list)."' > /var/run/gosa-si-client.socket");
771 $kernel->delay_set('trigger_logged_in_users_report', $trigger_logged_in_users_report_delay);
772 } else {
773 # try it in 10 sec again
774 $kernel->delay_set('trigger_logged_in_users_report', 10);
775 }
776 }
779 sub trigger_seen_messages {
780 my ($kernel) = $_[KERNEL] ;
782 # Select all files under /tmp with prefix 'goto_notify'
783 my $goto_dir = "/tmp";
784 opendir(DIR, $goto_dir);
785 my @goto_files = grep { /^goto_notify_/ && -f "$goto_dir/$_" } readdir(DIR);
786 closedir DIR;
788 # Check if file has 'seen' tag
789 foreach my $goto_file (@goto_files) {
790 open(FILE, "$goto_dir/$goto_file");
791 my @lines = <FILE>;
792 close FILE;
794 my $source;
795 my $target;
796 my $usr;
797 my $subject;
798 my $message;
799 my $seen = 0;
800 chomp(@lines);
801 foreach my $line (@lines) {
802 if ($line =~ /^source:([\S\s]*)$/) {
803 $source = $1
804 }
805 if ($line =~ /^target:([\S\s]*)$/) {
806 $target = $1;
807 }
808 if ($line =~ /^usr:([\S\s]*)$/) {
809 $usr = $1;
810 }
811 if ($line =~ /^subject:([\S\s]*)$/) {
812 $subject = $1;
813 }
814 if ($line =~ /^message:([\S\s]*)$/) {
815 $message = $1;
816 }
817 if ($line =~ /^seen$/) {
818 $seen++;
819 }
820 }
822 # Send 'confirm_usr_msg' back to msg-hosting server
823 if ($seen) {
824 my %data = ('usr'=>$usr, 'subject'=>$subject, 'message'=>$message);
825 my $confirm_msg = &build_msg("confirm_usr_msg", $target, $source, \%data);
826 my $send_error = &send_msg_to_target($confirm_msg, $server_address, $server_key);
828 # Delete file
829 if (not $send_error) {
830 system("rm $goto_dir/$goto_file");
831 }
832 }
833 }
835 $kernel->delay_set('trigger_seen_messages', $trigger_seen_messages_delay);
837 return;
838 }
841 sub generic_file_error {
842 my ( $heap, $operation, $errno, $error_string, $wheel_id ) =
843 @_[ HEAP, ARG0, ARG1, ARG2, ARG3 ];
845 my $service = $heap->{services}->{$wheel_id};
846 daemon_log("ERROR: '$service' watcher $operation error $errno: $error_string", 1);
847 daemon_log("ERROR: shutting down '$service' file watcher", 1);
849 delete $heap->{services}->{$wheel_id};
850 delete $heap->{watchers}->{$wheel_id};
851 return;
852 }
855 sub fifo_got_record {
856 my $file_record = $_[ARG0];
857 my $header;
858 my $content = "";
859 daemon_log("DEBUG: fifo got record: $file_record", 7);
861 $file_record =~ /^(\S+)[ ]?([\s\S]+)?$/;
862 if( defined $1 ) {
863 $header = $1;
864 } else {
865 return;
866 }
868 if( defined $2 ) {
869 $content = $2;
870 }
872 my $clmsg_hash = &create_xml_hash("CLMSG_$header", $client_address, $server_address, $content);
873 &add_content2xml_hash($clmsg_hash, "macaddress", $client_mac_address);
874 my $utc_ts = &main::get_utc_time();
875 &add_content2xml_hash($clmsg_hash, "timestamp", $utc_ts);
876 my $clmsg = &create_xml_string($clmsg_hash);
877 &send_msg_to_target($clmsg, $server_address, $server_key, "CLMSG_$header");
879 # if installation finished, save all log files
880 if ($file_record eq "TASKBEGIN finish") {
881 &save_fai_log($fai_log_dir);
882 }
884 return;
885 }
888 sub save_fai_log {
889 my ($fai_log_dir) = @_ ;
890 my $FAI_DIR;
892 opendir($FAI_DIR, $fai_log_dir);
893 if (not defined $FAI_DIR) {
894 daemon_log("ERROR: can not open directory $fai_log_dir: $!", 1);
895 return;
896 }
898 my @log_files = readdir($FAI_DIR);
899 closedir($FAI_DIR);
900 my @log_list;
902 foreach my $log_file (@log_files) {
903 if( $log_file eq "." || $log_file eq ".." ) { next; }
904 my $log = "log_file:$log_file:";
905 $log_file = File::Spec->catfile( $fai_log_dir, $log_file );
906 open(my $FILE, "<$log_file");
907 if (not defined $FILE ) {
908 daemon_log("ERROR: can not open '$log_file': $!", 1);
909 next;
910 }
911 my @lines = <$FILE>;
912 my $log_string = join("", @lines);
913 $log .= &encode_base64($log_string);
914 push(@log_list, $log);
915 close ($FILE);
916 }
918 my $all_log_string = join("\n", @log_list);
919 my $msg_hash = &create_xml_hash("CLMSG_save_fai_log", $client_address, $server_address, $all_log_string);
920 &add_content2xml_hash($msg_hash, "macaddress", $client_mac_address);
921 my $msg = &create_xml_string($msg_hash);
922 &send_msg_to_target($msg, $server_address, $server_key, "CLMSG_save_fai_log");
924 }
927 sub sig_handler {
928 my ($kernel, $signal) = @_[KERNEL, ARG0] ;
929 daemon_log("0 INFO got signal '$signal'", 1);
930 $kernel->sig_handled();
931 return;
932 }
935 sub _start {
936 my ($kernel, $heap) = @_[KERNEL, HEAP];
937 $kernel->alias_set('client_session');
938 $global_kernel = $kernel; # this is used to throw events at each point of the skript
940 $kernel->sig(USR1 => "sig_handler");
942 # force a registration at a gosa-si-server
943 $kernel->yield('register_at_gosa_si_server');
945 # install all file watcher defined
946 while( my($name, $file) = each %files_to_watch ) {
947 my $watcher = POE::Wheel::FollowTail->new(
948 Filename => $file,
949 InputEvent => $name."_record",
950 # ResetEvent => "file_reset",
951 ErrorEvent => "file_error",
952 );
953 # $heap->{tail} = POE::Wheel::Run->new(
954 # Program => [ "/usr/bin/tail", "-f", $file ],
955 # StdoutEvent => $file_name."_record",
956 # );
957 $heap->{services}->{ $watcher->ID } = $name;
958 $heap->{watchers}->{ $watcher->ID } = $watcher;
959 }
960 $kernel->yield('trigger_logged_in_users_report');
961 $kernel->yield('trigger_seen_messages');
962 }
965 sub _default {
966 daemon_log("ERROR: can not handle incoming msg with header '$_[ARG0]'", 1);
967 return;
968 }
971 sub server_input {
972 my ($kernel, $heap, $input, $wheel) = @_[KERNEL, HEAP, ARG0, ARG1];
973 my $remote_ip = $heap->{'remote_ip'},
974 my $error = 0;
975 my $answer;
978 daemon_log("INFO: Incoming msg from '$remote_ip'", 5);
979 daemon_log("DEBUG: Incoming msg:\n$input\n", 9);
981 my ($msg, $msg_hash) = &check_key_and_xml_validity($input, $server_key);
982 if( (!$msg) || (!$msg_hash) ) {
983 daemon_log("WARNING: Deciphering of incoming msg failed", 3);
984 if($server_address =~ /$remote_ip/) {
985 # got a msg from gosa-si-server which can not be decrypted, may the secrete not up-to-date
986 # cause a reregistering with a new secrete handshake
987 daemon_log("WARNING: Message from gosa-si-server could not be understood, cause reregistering at server", 3);
989 # if client is alread in a registration process, that means not registered, do nothing
990 # if not, cause re-registration
991 if (not $REGISTERED) {
992 &daemon_log("WARNING: gosa-si-client is already in a registration process so ignore this message", 3);
993 } else {
994 $REGISTERED = 0;
995 $kernel->post('client_session', 'register_at_gosa_si_server');
996 }
997 }
998 $error++;
999 }
1002 ######################
1003 # process incoming msg
1004 if( $error == 0 ) {
1005 my $header = @{$msg_hash->{header}}[0];
1006 my $source = @{$msg_hash->{source}}[0];
1008 if( exists $event_hash->{$header} ) {
1010 # a event exists with the header as name
1011 daemon_log("INFO: found event '$header' at event-module '".$event_hash->{$header}."'", 5);
1012 no strict 'refs';
1013 $answer = &{$event_hash->{$header}."::$header"}($msg, $msg_hash);
1014 }
1015 else {
1016 daemon_log("WARNING: no event '$header' found in event modules under $event_dir", 3);
1017 }
1018 }
1020 ########
1021 # answer
1022 if( $answer ) {
1024 #check gosa-si envelope validity
1025 my $answer_hash = &check_outgoing_xml_validity($answer);
1027 if( $answer_hash ) {
1028 # answer is valid
1030 # preprocessing
1031 if( $answer =~ "<header>registered</header>") {
1032 # set registered flag to true to stop sending further registered msgs
1033 $REGISTERED = 1;
1034 }
1035 else {
1036 $answer =~ /<header>(\S+)<\/header>/;
1037 &send_msg_to_target($answer, $server_address, $server_key, $1);
1038 }
1040 # postprocessing
1041 if( $answer =~ "<header>new_key</header>") {
1042 # set new key to global variable
1043 $answer =~ /<new_key>(\S*?)<\/new_key>/;
1044 my $new_key = $1;
1045 $server_key = $new_key;
1046 }
1047 }
1049 }
1051 return;
1052 }
1055 #==== MAIN = main ==============================================================
1056 # parse commandline options
1057 Getopt::Long::Configure( "bundling" );
1058 GetOptions("h|help" => \&usage,
1059 "c|config=s" => \$cfg_file,
1060 "f|foreground" => \$foreground,
1061 "v|verbose+" => \$verbose,
1062 );
1064 # read and set config parameters
1065 &check_cmdline_param ;
1066 &read_configfile($cfg_file, %cfg_defaults);
1067 &check_pid;
1070 # forward error messages to logfile
1071 if ( ! $foreground ) {
1072 open( STDIN, '+>/dev/null' );
1073 open( STDOUT, '+>&STDIN' );
1074 open( STDERR, '+>&STDIN' );
1075 }
1077 # Just fork, if we are not in foreground mode
1078 if( ! $foreground ) {
1079 chdir '/' or die "Can't chdir to /: $!";
1080 $pid = fork;
1081 setsid or die "Can't start a new session: $!";
1082 umask 0;
1083 } else {
1084 $pid = $$;
1085 }
1087 # Do something useful - put our PID into the pid_file
1088 if( 0 != $pid ) {
1089 open( LOCK_FILE, ">$pid_file" );
1090 print LOCK_FILE "$pid\n";
1091 close( LOCK_FILE );
1092 if( !$foreground ) {
1093 exit( 0 )
1094 };
1095 }
1097 # parse head url and revision from svn
1098 my $client_status_hash = { 'developmental'=>'revision', 'stable'=>'release'};
1099 $client_version =~ /^\$HeadURL: (\S+) \$:\$Rev: (\d+) \$$/;
1100 $client_headURL = defined $1 ? $1 : 'unknown' ;
1101 $client_revision = defined $2 ? $2 : 'unknown' ;
1102 if ($client_headURL =~ /\/tag\// ||
1103 $client_headURL =~ /\/branches\// ) {
1104 $client_status = "stable";
1105 } else {
1106 $client_status = "developmental" ;
1107 }
1109 # Prepare log file
1110 my $root_uid = getpwnam('root');
1111 my $adm_gid = getgrnam('adm');
1112 chmod(0640, $log_file);
1113 chown($root_uid, $adm_gid, $log_file);
1116 daemon_log(" ", 1);
1117 daemon_log("$prg started!", 1);
1118 daemon_log("INFO: status: $client_status", 1);
1119 daemon_log("INFO: ".$client_status_hash->{$client_status}.": $client_revision", 1);
1121 # delete old DBsqlite lock files
1122 system('rm -f /tmp/gosa_si_lock*gosa-si-client*');
1124 # detect ip and mac address and complete host address
1125 $client_address = $client_ip.":".$client_port;
1126 my $network_interface= &get_interface_for_ip($client_ip);
1127 $client_mac_address= &get_mac($network_interface);
1128 daemon_log("INFO: ip address detected: $client_ip", 1);
1129 daemon_log("INFO: gosa-si-client mac address detected: $client_mac_address", 1);
1132 # import events
1133 my ($error, $result, $tmp_hash) = &import_events($event_dir);
1134 while (my ($module, $mod_event_hash) = each %$tmp_hash) {
1135 while (my ($event_name, $nothing) = each %$mod_event_hash) {
1136 $event_hash->{$event_name} = $module;
1137 }
1138 }
1140 foreach my $log_line (@$result) {
1141 if ($log_line =~ / succeed: /) {
1142 &main::daemon_log("0 DEBUG: $log_line", 7);
1143 } else {
1144 &main::daemon_log("0 ERROR: $log_line", 1);
1145 }
1146 }
1149 # compute hardware checksum
1150 $gotoHardwareChecksum= &generate_hw_digest();
1151 daemon_log("INFO: gotoHardwareChecksum detected: $gotoHardwareChecksum", 1);
1154 # create socket for incoming xml messages
1155 POE::Component::Server::TCP->new(
1156 Alias => 'gosa-si-client',
1157 Port => $client_port,
1158 ClientInput => \&server_input,
1159 );
1160 daemon_log("INFO: start socket for incoming xml messages at port '$client_port' ", 1);
1163 # prepare variables
1164 if( inet_aton($server_ip) ){ $server_ip = inet_ntoa(inet_aton($server_ip)); }
1165 if (defined $server_ip && defined $server_port) {
1166 $server_address = $server_ip.":".$server_port;
1167 }
1168 $xml = new XML::Simple();
1169 $default_server_key = $server_key;
1172 # add gosa-si-server address from config file at first position of server list
1173 my $server_check_cfg = Config::IniFiles->new( -file => $cfg_file );
1174 my $server_check = (defined($server_check_cfg))?$server_check_cfg->val( "server", "ip"):undef;
1175 if( defined $server_check ) {
1176 unshift(@servers, $server_address);
1177 my $servers_string = join(", ", @servers);
1178 daemon_log("INFO: found servers in configuration file: $servers_string", 1);
1179 } else {
1180 my @tmp_servers;
1181 if ( !$server_domain) {
1182 # Try our DNS Searchlist
1183 my @domain_list = &get_dns_domains();
1184 my $tmp_domains;
1185 my $error_string;
1186 for my $domain (@domain_list) {
1187 chomp($domain);
1188 ($tmp_domains, $error_string) = &get_server_addresses($domain);
1189 if(@$tmp_domains) {
1190 for my $tmp_server(@$tmp_domains) {
1191 push @tmp_servers, $tmp_server;
1192 }
1193 }
1194 }
1195 if (0 == @tmp_servers) {
1196 my $log_string = "no gosa-si-server found!";
1197 $log_string .= "\n\tdetermined domains out of /etc/resolv.conf: ".join(", ", @domain_list);
1198 $log_string .= "\n\tdetermined server addresses in domains: ".join(", ",@$tmp_domains);
1199 daemon_log("ERROR: $log_string", 1);
1200 daemon_log("ERROR: $error_string", 1);
1201 daemon_log("ERROR: please specify a gosa-si-server address or a domain in config file", 1);
1202 kill 2, $$;
1203 }
1204 } else {
1205 @tmp_servers = &get_server_addresses($server_domain);
1206 if( 0 == @tmp_servers ) {
1207 daemon_log("ERROR: no gosa-si-server found in DNS for domain '$server_domain'",1);
1208 daemon_log("ERROR: please specify a gosa-si-server address or a domain in config file", 1);
1209 kill 2, $$;
1210 }
1211 }
1213 foreach my $server (@tmp_servers) {
1214 unshift(@servers, $server);
1215 }
1216 my $servers_string = join(", ", @servers);
1217 daemon_log("INFO: found servers in DNS: $servers_string", 1);
1218 }
1221 # open fifo for non-gosa-si-client-msgs to gosa-si-server
1222 POSIX::mkfifo("$gosa_si_client_fifo", "0600");
1225 POE::Session->create(
1226 inline_states => {
1227 _start => \&_start,
1228 _default => \&_default,
1229 sig_handler => \&sig_handler,
1230 register_at_gosa_si_server => \®ister_at_gosa_si_server,
1232 # trigger periodical tasks
1233 trigger_new_key => \&trigger_new_key,
1234 trigger_logged_in_users_report => \&trigger_logged_in_users_report,
1235 trigger_seen_messages => \&trigger_seen_messages,
1237 # handle records from each defined file differently
1238 fifo_record => \&fifo_got_record,
1240 # handle file resets and errors the same way for each file
1241 file_reset => \&generic_file_reset,
1242 file_error => \&generic_file_error,
1243 }
1244 );
1246 POE::Kernel->run();
1247 exit;