b7a20565a63d6828876e6fa0c1bb2720d29930f3
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 # Memorize own source address
433 $msg =~ /<source>(\S+)<\/source>/;
434 my $own_source_address = $1;
436 # encrypt xml msg
437 my $crypted_msg = &encrypt_msg($msg, $encrypt_key);
439 # opensocket
440 my $socket = &open_socket($address);
441 if( !$socket ) {
442 daemon_log("WARNING: cannot send ".$msg_header."msg to $address , host not reachable", 3);
443 if ($REGISTERED == 1) {
444 $REGISTERED = 0; # if server is not available, cause reregistering
445 daemon_log("INFO: cause reregistering at gosa-si-server", 5);
446 $global_kernel->yield('register_at_gosa_si_server');
448 }
449 $error++;
450 }
452 # send xml msg
453 if( $error == 0 ) {
454 print $socket $crypted_msg.";$own_source_address\n";
455 daemon_log("INFO: send ".$msg_header."msg to $address", 5);
456 daemon_log("DEBUG: message:\n$msg", 9);
457 }
459 # close socket in any case
460 if( $socket ) {
461 close $socket;
462 }
464 return $error;
465 }
468 sub write_to_file {
469 my ($string, $file) = @_;
470 my $error = 0;
472 if( not defined $file || not -f $file ) {
473 &main::daemon_log("ERROR: $prg: check '-f file' failed: $file", 1);
474 $error++;
475 }
476 if( not defined $string || 0 == length($string)) {
477 &main::daemon_log("ERROR: $prg: empty string to write to file '$file'", 1);
478 $error++;
479 }
481 if( $error == 0 ) {
483 chomp($string);
485 if (open(FILE, ">> $file")){
486 print FILE $string."\n";
487 close(FILE);
488 }
489 }
491 return;
492 }
495 sub open_socket {
496 my ($PeerAddr, $PeerPort) = @_ ;
497 if(defined($PeerPort)){
498 $PeerAddr = $PeerAddr.":".$PeerPort;
499 }
500 my $socket;
501 $socket = new IO::Socket::INET(PeerAddr => $PeerAddr,
502 Porto => "tcp",
503 Type => SOCK_STREAM,
504 Timeout => 5,
505 );
506 if(not defined $socket) {
507 return;
508 }
509 &daemon_log("DEBUG: open_socket: $PeerAddr", 7);
510 return $socket;
511 }
514 #=== FUNCTION ================================================================
515 # NAME: register_at_server
516 # PARAMETERS:
517 # RETURNS:
518 # DESCRIPTION:
519 #===============================================================================
520 sub register_at_gosa_si_server {
521 my ($kernel) = $_[KERNEL];
522 my $try_to_register = 0;
524 # if client is already registered, stop registration process
525 if ($REGISTERED) {
526 $kernel->delay('register_at_gosa_si_server');
528 # client is not registered, start registration process
529 } else {
530 # clear all other triggered events and wait till registration was successful
531 $kernel->delay('trigger_new_key');
533 # create new passwd and ciphering object for client-server communication
534 $server_key = &create_passwd();
536 my $events = join( ",", keys %{$event_hash} );
537 while(1) {
538 $try_to_register++;
540 # after one complete round through all server, stop trying to register
541 if( $try_to_register > @servers ) { last; }
543 # fetch first gosa-si-server from @servers
544 # append shifted gosa-si-server at the end of @servers, so looking for servers never stop if
545 # a registration never occured
546 my $server = shift(@servers);
547 push( @servers, $server );
549 # Check if our ip is resolvable - if not: don't try to register
550 if(!(defined($server) && $server =~ m/^[0-9\.]*?:.*$/)) {
551 &main::daemon_log("ERROR: Server with address '".defined($server)?$server:""."' is invalid!", 1);
552 if (length(@servers) == 1) {
553 &main::daemon_log("ERROR: No valid servers found!", 1);
554 exit(1);
555 }
556 }
558 # Check if our ip is resolvable - if not: don't try to register
559 my $ip= &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
560 my $dnsname= gethostbyaddr(inet_aton($ip), AF_INET);
561 if(!defined($dnsname)) {
562 if( defined($client_force_hostname) && $client_force_hostname eq "true") {
563 $dnsname = `hostname`;
564 } else {
565 &write_to_file("goto-error-dns:$ip", $fai_logpath);
566 &main::daemon_log("ERROR: ip is not resolvable, no registration possible. Write 'goto-error-dns:$ip' to $fai_logpath", 1);
567 exit(1);
568 }
569 }
571 # create registration msg
572 my $local_ip = &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
573 my $local_mac = &get_local_mac_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
574 my $register_hash = &create_xml_hash("here_i_am", $local_ip.":".$client_port, $server);
575 &add_content2xml_hash($register_hash, "new_passwd", $server_key);
576 &add_content2xml_hash($register_hash, "mac_address", $local_mac);
577 &add_content2xml_hash($register_hash, "events", $events);
578 &add_content2xml_hash($register_hash, "client_status", $client_status);
579 &add_content2xml_hash($register_hash, "client_revision", $client_revision);
580 &add_content2xml_hash($register_hash, "gotoHardwareChecksum", $gotoHardwareChecksum);
581 &add_content2xml_hash($register_hash, "key_lifetime", $server_key_lifetime);
583 # Add $HOSTNAME from ENV if force-hostname is set
584 if( defined($client_force_hostname) && $client_force_hostname eq "true") {
585 if(defined($ENV{HOSTNAME}) && length($ENV{HOSTNAME}) >0 ) {
586 &add_content2xml_hash($register_hash, "force-hostname", $ENV{HOSTNAME});
587 } else {
588 &main::daemon_log("force-hostname was set to true, but no \$HOSTNAME was found in Environment!",0);
589 }
590 }
592 # send xml hash to server with general server passwd
593 my $res = &send_msg_hash_to_target($register_hash, $server, $default_server_key);
595 # if delivery of registration msg succeed
596 if($res eq "0") {
597 # reset try_to_register
598 $try_to_register = 0;
600 # Set fixed client address and mac address
601 $client_ip= &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
602 $client_address= "$client_ip:$client_port";
603 $client_mac_address = $local_mac;
604 $client_dnsname = $dnsname;
605 last;
607 # delivery of registration msg failed
608 } else {
609 # wait 1 sec until trying to register again
610 sleep(1);
611 next;
612 }
614 } # end of while
615 # one circle through all servers finished and no registration succeed
616 if ( $try_to_register >= @servers ) {
617 &write_to_file("gosa-si-no-server-available", $fai_logpath);
618 $kernel->delay_set('register_at_gosa_si_server', $delay_set_time);
620 # delivery of registraion msg succeed, waiting for server response
621 } else {
622 daemon_log("INFO: waiting for msg 'register_at_gosa_si_server'",5);
623 $kernel->delay_set('register_at_gosa_si_server', $delay_set_time);
624 # clear old settings and set it again
625 $kernel->delay('trigger_new_key');
626 $kernel->delay_set('trigger_new_key', $server_key_lifetime);
627 }
629 }
630 return;
631 }
634 sub check_key_and_xml_validity {
635 my ($crypted_msg, $module_key) = @_;
637 my $msg;
638 my $msg_hash;
639 eval{
640 $msg = &decrypt_msg($crypted_msg, $module_key);
641 &main::daemon_log("decrypted_msg: \n$msg", 9);
643 $msg_hash = $xml->XMLin($msg, ForceArray=>1);
645 ##############
646 # check header
647 my $header_l = $msg_hash->{'header'};
648 if( 1 != @{$header_l} ) {
649 die 'no or more headers specified';
650 }
651 my $header = @{$header_l}[0];
652 if( 0 == length $header) {
653 die 'header has length 0';
654 }
656 ##############
657 # check source
658 my $source_l = $msg_hash->{'source'};
659 if( 1 != @{$source_l} ) {
660 die 'no or more than 1 sources specified';
661 }
662 my $source = @{$source_l}[0];
663 if( 0 == length $source) {
664 die 'source has length 0';
665 }
666 unless( $source =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ) {
667 die "source '$source' is neither a complete ip-address with port nor 'GOSA'";
668 }
670 ##############
671 # check target
672 my $target_l = $msg_hash->{'target'};
673 if( 1 != @{$target_l} ) {
674 die 'no or more than 1 targets specified ';
675 }
676 my $target = @{$target_l}[0];
677 if( 0 == length $target) {
678 die 'target has length 0 ';
679 }
680 unless( $target =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ){
681 die "source is neither a complete ip-address with port nor 'GOSA'";
682 }
683 };
684 if($@) {
685 &main::daemon_log("WARNING: do not understand the message or msg is not gosa-si envelope conform:", 5);
686 &main::daemon_log("$@", 8);
687 $msg = undef;
688 $msg_hash = undef;
689 }
691 return ($msg, $msg_hash);
692 }
695 sub check_outgoing_xml_validity {
696 my ($msg) = @_;
698 my $msg_hash;
699 eval{
700 $msg_hash = $xml->XMLin($msg, ForceArray=>1);
702 ##############
703 # check header
704 my $header_l = $msg_hash->{'header'};
705 if( 1 != @{$header_l} ) {
706 die 'no or more than one headers specified';
707 }
708 my $header = @{$header_l}[0];
709 if( 0 == length $header) {
710 die 'header has length 0';
711 }
713 ##############
714 # check source
715 my $source_l = $msg_hash->{'source'};
716 if( 1 != @{$source_l} ) {
717 die 'no or more than 1 sources specified';
718 }
719 my $source = @{$source_l}[0];
720 if( 0 == length $source) {
721 die 'source has length 0';
722 }
723 unless( $source =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ||
724 $source =~ /^GOSA$/i ) {
725 die "source '$source' is neither a complete ip-address with port";
726 }
728 ##############
729 # check target
730 my $target_l = $msg_hash->{'target'};
731 if( 1 != @{$target_l} ) {
732 die "no or more than one targets specified";
733 }
734 foreach my $target (@$target_l) {
735 if( 0 == length $target) {
736 die "target has length 0";
737 }
738 unless( $target =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ) {
739 die "target '$target' is not a complete ip-address with port or a valid target name";
740 }
741 }
742 };
743 if($@) {
744 daemon_log("WARNING: outgoing msg is not gosa-si envelope conform", 5);
745 daemon_log("$@ $msg", 8);
746 $msg_hash = undef;
747 }
748 return ($msg_hash);
749 }
752 sub trigger_new_key {
753 my ($kernel) = $_[KERNEL] ;
755 my $msg = "<xml><header>new_key</header><source>$client_address</source><target>$client_address</target></xml>";
756 &send_msg_to_target($msg, $client_address, $server_key, 'new_key');
758 $kernel->delay_set('trigger_new_key', $server_key_lifetime);
759 }
762 sub trigger_logged_in_users_report {
763 my ($kernel) = $_[KERNEL] ;
765 # just do if client is registered already
766 if( $REGISTERED ) {
767 my $result = qx(/usr/bin/users);
768 my @logged_in_user_list;
769 if( defined $result ) {
770 chomp($result);
771 @logged_in_user_list = split(/\s/, $result);
772 }
774 system("echo 'CURRENTLY_LOGGED_IN ".join(" ", @logged_in_user_list)."' > /var/run/gosa-si-client.socket");
775 $kernel->delay_set('trigger_logged_in_users_report', $trigger_logged_in_users_report_delay);
776 } else {
777 # try it in 10 sec again
778 $kernel->delay_set('trigger_logged_in_users_report', 10);
779 }
780 }
783 sub trigger_seen_messages {
784 my ($kernel) = $_[KERNEL] ;
786 # Select all files under /tmp with prefix 'goto_notify'
787 my $goto_dir = "/tmp";
788 opendir(DIR, $goto_dir);
789 my @goto_files = grep { /^goto_notify_/ && -f "$goto_dir/$_" } readdir(DIR);
790 closedir DIR;
792 # Check if file has 'seen' tag
793 foreach my $goto_file (@goto_files) {
794 open(FILE, "$goto_dir/$goto_file");
795 my @lines = <FILE>;
796 close FILE;
798 my $source;
799 my $target;
800 my $usr;
801 my $subject;
802 my $message;
803 my $seen = 0;
804 chomp(@lines);
805 foreach my $line (@lines) {
806 if ($line =~ /^source:([\S\s]*)$/) {
807 $source = $1
808 }
809 if ($line =~ /^target:([\S\s]*)$/) {
810 $target = $1;
811 }
812 if ($line =~ /^usr:([\S\s]*)$/) {
813 $usr = $1;
814 }
815 if ($line =~ /^subject:([\S\s]*)$/) {
816 $subject = $1;
817 }
818 if ($line =~ /^message:([\S\s]*)$/) {
819 $message = $1;
820 }
821 if ($line =~ /^seen$/) {
822 $seen++;
823 }
824 }
826 # Send 'confirm_usr_msg' back to msg-hosting server
827 if ($seen) {
828 my %data = ('usr'=>$usr, 'subject'=>$subject, 'message'=>$message);
829 my $confirm_msg = &build_msg("confirm_usr_msg", $target, $source, \%data);
830 my $send_error = &send_msg_to_target($confirm_msg, $server_address, $server_key);
832 # Delete file
833 if (not $send_error) {
834 system("rm $goto_dir/$goto_file");
835 }
836 }
837 }
839 $kernel->delay_set('trigger_seen_messages', $trigger_seen_messages_delay);
841 return;
842 }
845 sub generic_file_error {
846 my ( $heap, $operation, $errno, $error_string, $wheel_id ) =
847 @_[ HEAP, ARG0, ARG1, ARG2, ARG3 ];
849 my $service = $heap->{services}->{$wheel_id};
850 daemon_log("ERROR: '$service' watcher $operation error $errno: $error_string", 1);
851 daemon_log("ERROR: shutting down '$service' file watcher", 1);
853 delete $heap->{services}->{$wheel_id};
854 delete $heap->{watchers}->{$wheel_id};
855 return;
856 }
859 sub fifo_got_record {
860 my $file_record = $_[ARG0];
861 my $header;
862 my $content = "";
863 daemon_log("DEBUG: fifo got record: $file_record", 7);
865 $file_record =~ /^(\S+)[ ]?([\s\S]+)?$/;
866 if( defined $1 ) {
867 $header = $1;
868 } else {
869 return;
870 }
872 if( defined $2 ) {
873 $content = $2;
874 }
876 my $clmsg_hash = &create_xml_hash("CLMSG_$header", $client_address, $server_address, $content);
877 &add_content2xml_hash($clmsg_hash, "macaddress", $client_mac_address);
878 my $utc_ts = &main::get_utc_time();
879 &add_content2xml_hash($clmsg_hash, "timestamp", $utc_ts);
880 my $clmsg = &create_xml_string($clmsg_hash);
881 &send_msg_to_target($clmsg, $server_address, $server_key, "CLMSG_$header");
883 # if installation finished, save all log files
884 if ($file_record eq "TASKBEGIN finish") {
885 &save_fai_log($fai_log_dir);
886 }
888 return;
889 }
892 sub save_fai_log {
893 my ($fai_log_dir) = @_ ;
894 my $FAI_DIR;
896 my $log_dir = File::Spec->catdir($fai_log_dir, "localhost/last");
898 if (not -r -d $log_dir) {
899 daemon_log("ERROR: cannot open directory $log_dir", 1);
900 return;
901 }
903 opendir($FAI_DIR, "$log_dir");
904 my @log_files = readdir($FAI_DIR);
905 closedir($FAI_DIR);
907 my @log_list;
908 foreach my $log_file (@log_files) {
909 if( $log_file eq "." || $log_file eq ".." ) { next; }
911 my $log = "log_file:$log_file:";
912 $log_file = File::Spec->catfile( $log_dir, $log_file );
914 if (not -r -f $log_file) {
915 daemon_log("ERROR: cannot read $log_file", 1);
916 next;
917 }
919 if (-r -f $log_file) {
920 open(FILE, "<$log_file");
921 my @lines = <FILE> ;
922 close (FILE);
923 my $log_string = join("", @lines);
924 $log .= &encode_base64($log_string);
925 push(@log_list, $log);
926 }
927 }
929 my $all_log_string = join("\n", @log_list);
930 my $msg_hash = &create_xml_hash("CLMSG_save_fai_log", $client_address, $server_address, $all_log_string);
931 &add_content2xml_hash($msg_hash, "macaddress", $client_mac_address);
932 my $msg = &create_xml_string($msg_hash);
933 &send_msg_to_target($msg, $server_address, $server_key, "CLMSG_save_fai_log");
935 }
938 sub sig_handler {
939 my ($kernel, $signal) = @_[KERNEL, ARG0] ;
940 daemon_log("0 INFO got signal '$signal'", 1);
941 $kernel->sig_handled();
942 return;
943 }
946 sub _start {
947 my ($kernel, $heap) = @_[KERNEL, HEAP];
948 $kernel->alias_set('client_session');
949 $global_kernel = $kernel; # this is used to throw events at each point of the skript
951 $kernel->sig(USR1 => "sig_handler");
953 # force a registration at a gosa-si-server
954 $kernel->yield('register_at_gosa_si_server');
956 # install all file watcher defined
957 while( my($name, $file) = each %files_to_watch ) {
958 my $watcher = POE::Wheel::FollowTail->new(
959 Filename => $file,
960 InputEvent => $name."_record",
961 # ResetEvent => "file_reset",
962 ErrorEvent => "file_error",
963 );
964 # $heap->{tail} = POE::Wheel::Run->new(
965 # Program => [ "/usr/bin/tail", "-f", $file ],
966 # StdoutEvent => $file_name."_record",
967 # );
968 $heap->{services}->{ $watcher->ID } = $name;
969 $heap->{watchers}->{ $watcher->ID } = $watcher;
970 }
971 $kernel->yield('trigger_logged_in_users_report');
972 $kernel->yield('trigger_seen_messages');
973 }
976 sub _default {
977 daemon_log("ERROR: can not handle incoming msg with header '$_[ARG0]'", 1);
978 return;
979 }
982 sub server_input {
983 my ($kernel, $heap, $input, $wheel) = @_[KERNEL, HEAP, ARG0, ARG1];
984 my $remote_ip = $heap->{'remote_ip'},
985 my $error = 0;
986 my $answer;
989 daemon_log("INFO: Incoming msg from '$remote_ip'", 5);
990 daemon_log("DEBUG: Incoming msg:\n$input\n", 9);
992 my ($msg, $msg_hash) = &check_key_and_xml_validity($input, $server_key);
993 if( (!$msg) || (!$msg_hash) ) {
994 daemon_log("WARNING: Deciphering of incoming msg failed", 3);
995 if($server_address =~ /$remote_ip/) {
996 # got a msg from gosa-si-server which can not be decrypted, may the secrete not up-to-date
997 # cause a reregistering with a new secrete handshake
998 daemon_log("WARNING: Message from gosa-si-server could not be understood, cause reregistering at server", 3);
1000 # if client is alread in a registration process, that means not registered, do nothing
1001 # if not, cause re-registration
1002 if (not $REGISTERED) {
1003 &daemon_log("WARNING: gosa-si-client is already in a registration process so ignore this message", 3);
1004 } else {
1005 $REGISTERED = 0;
1006 $kernel->post('client_session', 'register_at_gosa_si_server');
1007 }
1008 }
1009 $error++;
1010 }
1013 ######################
1014 # process incoming msg
1015 if( $error == 0 ) {
1016 my $header = @{$msg_hash->{header}}[0];
1017 my $source = @{$msg_hash->{source}}[0];
1019 if( exists $event_hash->{$header} ) {
1021 # a event exists with the header as name
1022 daemon_log("INFO: found event '$header' at event-module '".$event_hash->{$header}."'", 5);
1023 no strict 'refs';
1024 $answer = &{$event_hash->{$header}."::$header"}($msg, $msg_hash);
1025 }
1026 else {
1027 daemon_log("WARNING: no event '$header' found in event modules under $event_dir", 3);
1028 }
1029 }
1031 ########
1032 # answer
1033 if( $answer ) {
1035 #check gosa-si envelope validity
1036 my $answer_hash = &check_outgoing_xml_validity($answer);
1038 if( $answer_hash ) {
1039 # answer is valid
1041 # preprocessing
1042 if( $answer =~ "<header>registered</header>") {
1043 # set registered flag to true to stop sending further registered msgs
1044 $REGISTERED = 1;
1045 }
1046 else {
1047 $answer =~ /<header>(\S+)<\/header>/;
1048 &send_msg_to_target($answer, $server_address, $server_key, $1);
1049 }
1051 # postprocessing
1052 if( $answer =~ "<header>new_key</header>") {
1053 # set new key to global variable
1054 $answer =~ /<new_key>(\S*?)<\/new_key>/;
1055 my $new_key = $1;
1056 $server_key = $new_key;
1057 }
1058 }
1060 }
1062 return;
1063 }
1066 #==== MAIN = main ==============================================================
1067 # parse commandline options
1068 Getopt::Long::Configure( "bundling" );
1069 GetOptions("h|help" => \&usage,
1070 "c|config=s" => \$cfg_file,
1071 "f|foreground" => \$foreground,
1072 "v|verbose+" => \$verbose,
1073 );
1075 # read and set config parameters
1076 &check_cmdline_param ;
1077 &read_configfile($cfg_file, %cfg_defaults);
1078 &check_pid;
1081 # forward error messages to logfile
1082 if ( ! $foreground ) {
1083 open( STDIN, '+>/dev/null' );
1084 open( STDOUT, '+>&STDIN' );
1085 open( STDERR, '+>&STDIN' );
1086 }
1088 # Just fork, if we are not in foreground mode
1089 if( ! $foreground ) {
1090 chdir '/' or die "Can't chdir to /: $!";
1091 $pid = fork;
1092 setsid or die "Can't start a new session: $!";
1093 umask 0;
1094 } else {
1095 $pid = $$;
1096 }
1098 # Do something useful - put our PID into the pid_file
1099 if( 0 != $pid ) {
1100 open( LOCK_FILE, ">$pid_file" );
1101 print LOCK_FILE "$pid\n";
1102 close( LOCK_FILE );
1103 if( !$foreground ) {
1104 exit( 0 )
1105 };
1106 }
1108 # parse head url and revision from svn
1109 my $client_status_hash = { 'developmental'=>'revision', 'stable'=>'release'};
1110 $client_version =~ /^\$HeadURL: (\S+) \$:\$Rev: (\d+) \$$/;
1111 $client_headURL = defined $1 ? $1 : 'unknown' ;
1112 $client_revision = defined $2 ? $2 : 'unknown' ;
1113 if ($client_headURL =~ /\/tag\// ||
1114 $client_headURL =~ /\/branches\// ) {
1115 $client_status = "stable";
1116 } else {
1117 $client_status = "developmental" ;
1118 }
1120 # Prepare log file
1121 my $root_uid = getpwnam('root');
1122 my $adm_gid = getgrnam('adm');
1123 chmod(0640, $log_file);
1124 chown($root_uid, $adm_gid, $log_file);
1127 daemon_log(" ", 1);
1128 daemon_log("$prg started!", 1);
1129 daemon_log("INFO: status: $client_status", 1);
1130 daemon_log("INFO: ".$client_status_hash->{$client_status}.": $client_revision", 1);
1132 # delete old DBsqlite lock files
1133 system('rm -f /tmp/gosa_si_lock*gosa-si-client*');
1135 # detect ip and mac address and complete host address
1136 $client_address = $client_ip.":".$client_port;
1137 my $network_interface= &get_interface_for_ip($client_ip);
1138 $client_mac_address= &get_mac($network_interface);
1139 daemon_log("INFO: ip address detected: $client_ip", 1);
1140 daemon_log("INFO: gosa-si-client mac address detected: $client_mac_address", 1);
1143 # import events
1144 my ($error, $result, $tmp_hash) = &import_events($event_dir);
1145 while (my ($module, $mod_event_hash) = each %$tmp_hash) {
1146 while (my ($event_name, $nothing) = each %$mod_event_hash) {
1147 $event_hash->{$event_name} = $module;
1148 }
1149 }
1151 foreach my $log_line (@$result) {
1152 if ($log_line =~ / succeed: /) {
1153 &main::daemon_log("0 DEBUG: $log_line", 7);
1154 } else {
1155 &main::daemon_log("0 ERROR: $log_line", 1);
1156 }
1157 }
1160 # compute hardware checksum
1161 $gotoHardwareChecksum= &generate_hw_digest();
1162 daemon_log("INFO: gotoHardwareChecksum detected: $gotoHardwareChecksum", 1);
1165 # create socket for incoming xml messages
1166 POE::Component::Server::TCP->new(
1167 Alias => 'gosa-si-client',
1168 Port => $client_port,
1169 ClientInput => \&server_input,
1170 );
1171 daemon_log("INFO: start socket for incoming xml messages at port '$client_port' ", 1);
1174 # prepare variables
1175 if( inet_aton($server_ip) ){ $server_ip = inet_ntoa(inet_aton($server_ip)); }
1176 if (defined $server_ip && defined $server_port) {
1177 $server_address = $server_ip.":".$server_port;
1178 }
1179 $xml = new XML::Simple();
1180 $default_server_key = $server_key;
1183 # add gosa-si-server address from config file at first position of server list
1184 my $server_check_cfg = Config::IniFiles->new( -file => $cfg_file );
1185 my $server_check = (defined($server_check_cfg))?$server_check_cfg->val( "server", "ip"):undef;
1186 if( defined $server_check ) {
1187 unshift(@servers, $server_address);
1188 my $servers_string = join(", ", @servers);
1189 daemon_log("INFO: found servers in configuration file: $servers_string", 1);
1190 } else {
1191 my @tmp_servers;
1192 if ( !$server_domain) {
1193 # Try our DNS Searchlist
1194 my @domain_list = &get_dns_domains();
1195 my $tmp_domains;
1196 my $error_string;
1197 for my $domain (@domain_list) {
1198 chomp($domain);
1199 ($tmp_domains, $error_string) = &get_server_addresses($domain);
1200 if(@$tmp_domains) {
1201 for my $tmp_server(@$tmp_domains) {
1202 push @tmp_servers, $tmp_server;
1203 }
1204 }
1205 }
1206 if (0 == @tmp_servers) {
1207 my $log_string = "no gosa-si-server found!";
1208 $log_string .= "\n\tdetermined domains out of /etc/resolv.conf: ".join(", ", @domain_list);
1209 $log_string .= "\n\tdetermined server addresses in domains: ".join(", ",@$tmp_domains);
1210 daemon_log("ERROR: $log_string", 1);
1211 daemon_log("ERROR: $error_string", 1);
1212 daemon_log("ERROR: please specify a gosa-si-server address or a domain in config file", 1);
1213 kill 2, $$;
1214 }
1215 } else {
1216 @tmp_servers = &get_server_addresses($server_domain);
1217 if( 0 == @tmp_servers ) {
1218 daemon_log("ERROR: no gosa-si-server found in DNS for domain '$server_domain'",1);
1219 daemon_log("ERROR: please specify a gosa-si-server address or a domain in config file", 1);
1220 kill 2, $$;
1221 }
1222 }
1224 foreach my $server (@tmp_servers) {
1225 unshift(@servers, $server);
1226 }
1227 my $servers_string = join(", ", @servers);
1228 daemon_log("INFO: found servers in DNS: $servers_string", 1);
1229 }
1232 # open fifo for non-gosa-si-client-msgs to gosa-si-server
1233 POSIX::mkfifo("$gosa_si_client_fifo", "0600");
1236 POE::Session->create(
1237 inline_states => {
1238 _start => \&_start,
1239 _default => \&_default,
1240 sig_handler => \&sig_handler,
1241 register_at_gosa_si_server => \®ister_at_gosa_si_server,
1243 # trigger periodical tasks
1244 trigger_new_key => \&trigger_new_key,
1245 trigger_logged_in_users_report => \&trigger_logged_in_users_report,
1246 trigger_seen_messages => \&trigger_seen_messages,
1248 # handle records from each defined file differently
1249 fifo_record => \&fifo_got_record,
1251 # handle file resets and errors the same way for each file
1252 file_reset => \&generic_file_reset,
1253 file_error => \&generic_file_error,
1254 }
1255 );
1257 POE::Kernel->run();
1258 exit;