fa2afbdbbdf12f703b801f5ecfac11ee93ca7442
1 #!/usr/bin/perl
2 #===============================================================================
3 #
4 # FILE: gosa-server
5 #
6 # USAGE: gosa-si-client
7 #
8 # DESCRIPTION:
9 #
10 # OPTIONS: ---
11 # REQUIREMENTS: libnetaddr-ip-perl
12 # BUGS: ---
13 # NOTES:
14 # AUTHOR: (Andreas Rettenberger), <rettenberger@gonicus.de>
15 # COMPANY:
16 # VERSION: 1.0
17 # CREATED: 12.09.2007 08:54:41 CEST
18 # REVISION: ---
19 #===============================================================================
21 use strict;
22 use warnings;
23 use Getopt::Long;
24 use Config::IniFiles;
25 use POSIX;
26 use Time::HiRes qw( gettimeofday );
28 use POE qw(Component::Server::TCP Wheel::FollowTail Wheel::Run);
29 use IO::Socket::INET;
30 use NetAddr::IP;
31 use Data::Dumper;
32 use Crypt::Rijndael;
33 use GOSA::GosaSupportDaemon;
34 use Digest::MD5 qw(md5_hex md5 md5_base64);
35 use MIME::Base64;
36 use XML::Simple;
37 use File::Basename;
38 use File::Spec;
40 # Workaround: need pure perl to make it work with UTF-8 :-(
41 $XML::Simple::PREFERRED_PARSER= "XML::SAX::PurePerl";
43 my $client_version = '$HeadURL$:$Rev$';
44 my $client_headURL;
45 my $client_revision;
46 my $client_status;
47 my $event_dir = "/usr/lib/gosa-si/client/events";
48 use lib "/usr/lib/gosa-si/client/events";
50 my (%cfg_defaults, $foreground, $verbose, $pid_file, $procid, $pid, $log_file, $fai_logpath);
51 my ($server_ip, $server_port, $server_timeout, $server_domain, $server_key_lifetime);
52 my ($client_port, $ldap_enabled, $ldap_config, $pam_config, $nss_config);
53 my $xml;
54 my $event_hash;
55 my $default_server_key;
56 my @servers;
57 my $gotoHardwareChecksum;
58 my $gosa_si_client_fifo;
59 my %files_to_watch;
60 $verbose= 1;
62 # globalise variables which are used in imported events
63 our $global_kernel;
64 our $cfg_file;
65 our $opts_file;
66 our $server_address;
67 our $client_address;
68 our $client_ip;
69 our $client_mac_address;
70 our $client_dnsname;
71 our $client_force_hostname;
72 our $server_key;
74 # default variables
75 our $REGISTERED = 0;
77 # path to fifo for non-gosa-si-client messages to gosa-si-server
78 $gosa_si_client_fifo = "/var/run/gosa-si-client.socket";
79 %files_to_watch = (fifo => $gosa_si_client_fifo);
81 # in function register_at_gosa_si_server, after which period of seconds a new registration should be tried if a registration was
82 # not successful until now
83 my $delay_set_time = 10;
84 our $prg= basename($0);
86 # all x seconds the client reports logged_in users to gosa-si-server
87 my $trigger_logged_in_users_report_delay = 600;
89 # directory where all log files from installation are stored
90 my $fai_log_dir = "/var/log/fai";
92 # dak variables
93 our $dak_base_directory;
94 our $dak_signing_keys_directory;
95 our $dak_queue_directory;
96 our $dak_user;
98 %cfg_defaults = (
99 "general" =>
100 {"log-file" => [\$log_file, "/var/run/".$prg.".log"],
101 "pid-file" => [\$pid_file, "/var/run/".$prg.".pid"],
102 "opts-file" => [\$opts_file, "/var/run/".$prg.".opts"],
103 },
104 "client" =>
105 {"port" => [\$client_port, "20083"],
106 "ip" => [\$client_ip, "0.0.0.0"],
107 "mac-address" => [\$client_mac_address, "00:00:00:00:00:00"],
108 "server-domain" => [\$server_domain, ""],
109 "ldap" => [\$ldap_enabled, 1],
110 "ldap-config" => [\$ldap_config, "/etc/ldap/ldap.conf"],
111 "pam-config" => [\$pam_config, "/etc/pam_ldap.conf"],
112 "nss-config" => [\$nss_config, "/etc/libnss-ldap.conf"],
113 "fai-logpath" => [\$fai_logpath, "/var/log/fai/fai.log"],
114 "force-hostname" => [\$client_force_hostname, "false"],
115 "dak-base" => [\$dak_base_directory, "/srv/archive"],
116 "dak-keyring" => [\$dak_signing_keys_directory, "/srv/archive/keyrings"],
117 "dak-queue" => [\$dak_queue_directory, "/srv/archive/queue"],
118 "dak-user" => [\$dak_user, "deb-dak"],
119 },
120 "server" => {
121 "ip" => [\$server_ip, "127.0.0.1"],
122 "port" => [\$server_port, "20081"],
123 "key" => [\$server_key, ""],
124 "timeout" => [\$server_timeout, 10],
125 "key-lifetime" => [\$server_key_lifetime, 600],
126 },
128 );
131 #=== FUNCTIONS = functions =====================================================
133 #=== FUNCTION ================================================================
134 # NAME: check_cmdline_param
135 # PARAMETERS:
136 # RETURNS:
137 # DESCRIPTION:
138 #===============================================================================
139 sub check_cmdline_param () {
140 my $err_config;
141 my $err_counter = 0;
142 if(not defined($cfg_file)) {
143 $cfg_file = "/etc/gosa-si/client.conf";
144 if(! -r $cfg_file) {
145 $err_config = "please specify a config file";
146 $err_counter += 1;
147 }
148 }
149 if( $err_counter > 0 ) {
150 &usage( "", 1 );
151 if( defined( $err_config)) { print STDERR "$err_config\n"}
152 print STDERR "\n";
153 exit( -1 );
154 }
155 }
158 #=== FUNCTION ================================================================
159 # NAME: read_configfile
160 # PARAMETERS: cfg_file - string -
161 # RETURNS:
162 # DESCRIPTION:
163 #===============================================================================
164 sub read_configfile {
165 my ($cfg_file, %cfg_defaults) = @_ ;
166 my $cfg;
167 if( defined( $cfg_file) && ( (-s $cfg_file) > 0 )) {
168 if( -r $cfg_file ) {
169 $cfg = Config::IniFiles->new( -file => $cfg_file );
170 } else {
171 print STDERR "Couldn't read config file!";
172 }
173 } else {
174 $cfg = Config::IniFiles->new() ;
175 }
176 foreach my $section (keys %cfg_defaults) {
177 foreach my $param (keys %{$cfg_defaults{ $section }}) {
178 my $pinfo = $cfg_defaults{ $section }{ $param };
179 ${@$pinfo[ 0 ]} = $cfg->val( $section, $param, @$pinfo[ 1 ] );
180 }
181 }
182 }
185 #=== FUNCTION ================================================================
186 # NAME: check_pid
187 # PARAMETERS:
188 # RETURNS:
189 # DESCRIPTION:
190 #===============================================================================
191 sub check_pid {
192 $pid = -1;
193 # Check, if we are already running
194 if( open(LOCK_FILE, "<$pid_file") ) {
195 $pid = <LOCK_FILE>;
196 if( defined $pid ) {
197 chomp( $pid );
198 if( -f "/proc/$pid/stat" ) {
199 my($stat) = `cat /proc/$pid/stat` =~ m/$pid \((.+)\).*/;
200 if( $0 eq $stat ) {
201 close( LOCK_FILE );
202 exit -1;
203 }
204 }
205 }
206 close( LOCK_FILE );
207 unlink( $pid_file );
208 }
210 # create a syslog msg if it is not to possible to open PID file
211 if (not sysopen(LOCK_FILE, $pid_file, O_WRONLY|O_CREAT|O_EXCL, 0644)) {
212 my($msg) = "Couldn't obtain lockfile '$pid_file' ";
213 if (open(LOCK_FILE, '<', $pid_file)
214 && ($pid = <LOCK_FILE>))
215 {
216 chomp($pid);
217 $msg .= "(PID $pid)\n";
218 } else {
219 $msg .= "(unable to read PID)\n";
220 }
221 if( ! ($foreground) ) {
222 openlog( $0, "cons,pid", "daemon" );
223 syslog( "warning", $msg );
224 closelog();
225 }
226 else {
227 print( STDERR " $msg " );
228 }
229 exit( -1 );
230 }
231 }
234 sub sig_int_handler {
235 my ($signal) = @_;
237 daemon_log("shutting down gosa-si-client", 1);
238 system("kill `ps -C gosa-si-client -o pid=`");
239 }
240 $SIG{INT} = \&sig_int_handler;
243 #=== FUNCTION ================================================================
244 # NAME: logging
245 # PARAMETERS: level - string - default 'info'
246 # msg - string -
247 # facility - string - default 'LOG_DAEMON'
248 # RETURNS:
249 # DESCRIPTION:
250 #===============================================================================
251 sub daemon_log {
252 # log into log_file
253 my( $msg, $level ) = @_;
254 if(not defined $msg) { return }
255 if(not defined $level) { $level = 1 }
256 if(defined $log_file){
257 open(LOG_HANDLE, ">>$log_file");
258 chmod 0600, $log_file;
259 if(not defined open( LOG_HANDLE, ">>$log_file" )) {
260 print STDERR "cannot open $log_file: $!";
261 return
262 }
263 chomp($msg);
264 if($level <= $verbose){
265 my ($seconds, $minutes, $hours, $monthday, $month,
266 $year, $weekday, $yearday, $sommertime) = localtime(time);
267 $hours = $hours < 10 ? $hours = "0".$hours : $hours;
268 $minutes = $minutes < 10 ? $minutes = "0".$minutes : $minutes;
269 $seconds = $seconds < 10 ? $seconds = "0".$seconds : $seconds;
270 my @monthnames = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
271 $month = $monthnames[$month];
272 $monthday = $monthday < 10 ? $monthday = "0".$monthday : $monthday;
273 $year+=1900;
275 my $log_msg = "$month $monthday $hours:$minutes:$seconds $prg $msg\n";
276 print LOG_HANDLE $log_msg;
277 if( $foreground ) {
278 print STDERR $log_msg;
279 }
280 }
281 close( LOG_HANDLE );
282 }
283 }
286 #=== FUNCTION ================================================================
287 # NAME: get_mac
288 # PARAMETERS: interface name (i.e. eth0)
289 # RETURNS: (mac address)
290 # DESCRIPTION: Uses ioctl to get mac address directly from system.
291 #===============================================================================
292 sub get_mac {
293 my $ifreq= shift;
294 my $result;
295 if ($ifreq && length($ifreq) > 0) {
296 if($ifreq eq "all") {
297 if(defined($server_ip)) {
298 $result = &get_local_mac_for_remote_ip($server_ip);
299 }
300 elsif ($client_mac_address && length($client_mac_address) > 0 && !($client_mac_address eq "00:00:00:00:00:00")){
301 $result = &client_mac_address;
302 }
303 else {
304 $result = "00:00:00:00:00:00";
305 }
306 } else {
307 my $SIOCGIFHWADDR= 0x8927; # man 2 ioctl_list
309 # A configured MAC Address should always override a guessed value
310 if ($client_mac_address and length($client_mac_address) > 0 and not($client_mac_address eq "00:00:00:00:00:00")) {
311 $result= $client_mac_address;
312 }
313 else {
314 socket SOCKET, PF_INET, SOCK_DGRAM, getprotobyname('ip')
315 or die "socket: $!";
317 if(ioctl SOCKET, $SIOCGIFHWADDR, $ifreq) {
318 my ($if, $mac)= unpack 'h36 H12', $ifreq;
320 if (length($mac) > 0) {
321 $mac=~ m/^([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])$/;
322 $mac= sprintf("%s:%s:%s:%s:%s:%s", $1, $2, $3, $4, $5, $6);
323 $result = $mac;
324 }
325 }
326 }
327 }
328 }
329 return $result;
330 }
334 #=== FUNCTION ================================================================
335 # NAME: get_local_mac_for_remote_ip
336 # PARAMETERS: none (takes server_ip from global variable)
337 # RETURNS: (ip address from interface that is used for communication)
338 # DESCRIPTION: Uses ioctl to get routing table from system, checks which entry
339 # matches (defaultroute last).
340 #===============================================================================
341 sub get_local_mac_for_remote_ip {
342 my $server_ip= shift;
343 my $result= "00:00:00:00:00:00";
345 if($server_ip =~ /^(\d\d?\d?\.){3}\d\d?\d?$/) {
346 my $PROC_NET_ROUTE= ('/proc/net/route');
348 open(PROC_NET_ROUTE, "<$PROC_NET_ROUTE")
349 or die "Could not open $PROC_NET_ROUTE";
351 my @ifs = <PROC_NET_ROUTE>;
353 close(PROC_NET_ROUTE);
355 # Eat header line
356 shift @ifs;
357 chomp @ifs;
358 foreach my $line(@ifs) {
359 my ($Iface,$Destination,$Gateway,$Flags,$RefCnt,$Use,$Metric,$Mask,$MTU,$Window,$IRTT)=split(/\s/, $line);
360 my $destination;
361 my $mask;
362 my ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Destination);
363 $destination= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
364 ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Mask);
365 $mask= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
366 if(new NetAddr::IP($server_ip)->within(new NetAddr::IP($destination, $mask))) {
367 # destination matches route, save mac and exit
368 $result= &get_mac($Iface);
369 last;
370 }
371 }
372 } else {
373 daemon_log("get_local_mac_for_remote_ip was called with a non-ip parameter: $server_ip", 1);
374 }
375 return $result;
376 }
378 sub get_local_ip_for_remote_ip {
379 my $server_ip= shift;
380 my $result="0.0.0.0";
382 if($server_ip =~ /^(\d\d?\d?\.){3}\d\d?\d?$/) {
383 # client should always have a 'valid' ip-address, which is available from other hosts too,
384 # 127.0.0.1 says nothing to foreign host
385 #if($server_ip eq "127.0.0.1") {
386 # $result="127.0.0.1";
387 #} else {
388 my $PROC_NET_ROUTE= ('/proc/net/route');
390 open(PROC_NET_ROUTE, "<$PROC_NET_ROUTE")
391 or die "Could not open $PROC_NET_ROUTE";
393 my @ifs = <PROC_NET_ROUTE>;
395 close(PROC_NET_ROUTE);
397 # Eat header line
398 shift @ifs;
399 chomp @ifs;
400 foreach my $line(@ifs) {
401 my ($Iface,$Destination,$Gateway,$Flags,$RefCnt,$Use,$Metric,$Mask,$MTU,$Window,$IRTT)=split(/\s/, $line);
402 my $destination;
403 my $mask;
404 my ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Destination);
405 $destination= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
406 ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Mask);
407 $mask= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
408 if(new NetAddr::IP($server_ip)->within(new NetAddr::IP($destination, $mask))) {
409 # destination matches route, save mac and exit
410 $result= &get_ip($Iface);
411 last;
412 }
413 }
414 #}
415 } else {
416 daemon_log("get_local_ip_for_remote_ip was called with a non-ip parameter: $server_ip", 1);
417 }
418 return $result;
419 }
422 sub generate_hw_digest {
423 my $hw_data;
424 foreach my $line (split /\n/, `cat /proc/bus/pci/devices`) {
425 $hw_data.= sprintf "%s", $line =~ /[^\s]+\s([^\s]+)\s.*/;
426 }
427 return(md5_base64($hw_data));
428 }
431 sub create_ciphering {
432 my ($passwd) = @_;
433 if((!defined($passwd)) || length($passwd)==0) {
434 $passwd = "";
435 }
436 $passwd = substr(md5_hex("$passwd") x 32, 0, 32);
437 my $iv = substr(md5_hex('GONICUS GmbH'),0, 16);
438 my $my_cipher = Crypt::Rijndael->new($passwd , Crypt::Rijndael::MODE_CBC());
439 $my_cipher->set_iv($iv);
440 return $my_cipher;
441 }
444 sub encrypt_msg {
445 my ($msg, $key) = @_;
446 my $my_cipher = &create_ciphering($key);
447 my $len;
448 {
449 use bytes;
450 $len= 16-length($msg)%16;
451 }
452 $msg = "\0"x($len).$msg;
453 $msg = $my_cipher->encrypt($msg);
454 chomp($msg = &encode_base64($msg));
455 # there are no newlines allowed inside msg
456 $msg=~ s/\n//g;
457 return $msg;
458 }
461 sub decrypt_msg {
463 my ($msg, $key) = @_ ;
464 $msg = &decode_base64($msg);
465 my $my_cipher = &create_ciphering($key);
466 $msg = $my_cipher->decrypt($msg);
467 $msg =~ s/\0*//g;
468 return $msg;
469 }
472 #=== FUNCTION ================================================================
473 # NAME: send_msg_hash_to_target
474 # PARAMETERS: msg_hash - hash - xml_hash created with function create_xml_hash
475 # PeerAddr string - socket address to send msg
476 # PeerPort string - socket port, if not included in socket address
477 # RETURNS: nothing
478 # DESCRIPTION: ????
479 #===============================================================================
480 sub send_msg_hash_to_target {
481 my ($msg_hash, $address, $encrypt_key) = @_ ;
482 my $msg = &create_xml_string($msg_hash);
483 my $header = @{$msg_hash->{'header'}}[0];
484 my $error = &send_msg_to_target($msg, $address, $encrypt_key, $header);
486 return $error;
487 }
490 sub send_msg_to_target {
491 my ($msg, $address, $encrypt_key, $msg_header) = @_ ;
492 my $error = 0;
494 if( $msg_header ) { $msg_header = "'$msg_header'-"; }
495 else { $msg_header = ""; }
497 # encrypt xml msg
498 my $crypted_msg = &encrypt_msg($msg, $encrypt_key);
500 # opensocket
501 my $socket = &open_socket($address);
502 if( !$socket ) {
503 daemon_log("WARNING: cannot send ".$msg_header."msg to $address , host not reachable", 3);
504 if ($REGISTERED == 1) {
505 $REGISTERED = 0; # if server is not available, cause reregistering
506 daemon_log("INFO: cause reregistering at gosa-si-server", 5);
507 $global_kernel->yield('register_at_gosa_si_server');
509 }
510 $error++;
511 }
513 # send xml msg
514 if( $error == 0 ) {
515 print $socket $crypted_msg."\n";
516 daemon_log("INFO: send ".$msg_header."msg to $address", 5);
517 daemon_log("DEBUG: message:\n$msg", 9);
518 }
520 # close socket in any case
521 if( $socket ) {
522 close $socket;
523 }
525 return $error;
526 }
529 sub write_to_file {
530 my ($string, $file) = @_;
531 my $error = 0;
533 if( not defined $file || not -f $file ) {
534 &main::daemon_log("ERROR: $prg: check '-f file' failed: $file", 1);
535 $error++;
536 }
537 if( not defined $string || 0 == length($string)) {
538 &main::daemon_log("ERROR: $prg: empty string to write to file '$file'", 1);
539 $error++;
540 }
542 if( $error == 0 ) {
544 chomp($string);
546 if (open(FILE, ">> $file")){
547 print FILE $string."\n";
548 close(FILE);
549 }
550 }
552 return;
553 }
556 sub open_socket {
557 my ($PeerAddr, $PeerPort) = @_ ;
558 if(defined($PeerPort)){
559 $PeerAddr = $PeerAddr.":".$PeerPort;
560 }
561 my $socket;
562 $socket = new IO::Socket::INET(PeerAddr => $PeerAddr,
563 Porto => "tcp",
564 Type => SOCK_STREAM,
565 Timeout => 5,
566 );
567 if(not defined $socket) {
568 return;
569 }
570 &daemon_log("DEBUG: open_socket: $PeerAddr", 7);
571 return $socket;
572 }
575 #=== FUNCTION ================================================================
576 # NAME: register_at_server
577 # PARAMETERS:
578 # RETURNS:
579 # DESCRIPTION:
580 #===============================================================================
581 sub register_at_gosa_si_server {
582 my ($kernel) = $_[KERNEL];
583 my $try_to_register = 0;
585 # if client is already registered, stop registration process
586 if ($REGISTERED) {
587 $kernel->delay('register_at_gosa_si_server');
589 # client is not registered, start registration process
590 } else {
591 # clear all other triggered events and wait till registration was successful
592 $kernel->delay('trigger_new_key');
594 # create new passwd and ciphering object for client-server communication
595 $server_key = &create_passwd();
597 my $events = join( ",", keys %{$event_hash} );
598 while(1) {
599 $try_to_register++;
601 # after one complete round through all server, stop trying to register
602 if( $try_to_register > @servers ) { last; }
604 # fetch first gosa-si-server from @servers
605 # append shifted gosa-si-server at the end of @servers, so looking for servers never stop if
606 # a registration never occured
607 my $server = shift(@servers);
608 push( @servers, $server );
610 # Check if our ip is resolvable - if not: don't try to register
611 if(!(defined($server) && $server =~ m/^[0-9\.]*?:.*$/)) {
612 &main::daemon_log("ERROR: Server with address '".defined($server)?$server:""."' is invalid!", 1);
613 if (length(@servers) == 1) {
614 &main::daemon_log("ERROR: No valid servers found!", 1);
615 exit(1);
616 }
617 }
619 # Check if our ip is resolvable - if not: don't try to register
620 my $ip= &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
621 my $dnsname= gethostbyaddr(inet_aton($ip), AF_INET);
622 if(!defined($dnsname)) {
623 if( defined($client_force_hostname) && $client_force_hostname eq "true") {
624 $dnsname = `hostname`;
625 } else {
626 &write_to_file("goto-error-dns:$ip", $fai_logpath);
627 exit(1);
628 }
629 }
631 # create registration msg
632 my $local_ip = &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
633 my $local_mac = &get_local_mac_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
634 my $register_hash = &create_xml_hash("here_i_am", $local_ip.":".$client_port, $server);
635 &add_content2xml_hash($register_hash, "new_passwd", $server_key);
636 &add_content2xml_hash($register_hash, "mac_address", $local_mac);
637 &add_content2xml_hash($register_hash, "events", $events);
638 &add_content2xml_hash($register_hash, "client_status", $client_status);
639 &add_content2xml_hash($register_hash, "client_revision", $client_revision);
640 &add_content2xml_hash($register_hash, "gotoHardwareChecksum", $gotoHardwareChecksum);
641 &add_content2xml_hash($register_hash, "key_lifetime", $server_key_lifetime);
643 # Add $HOSTNAME from ENV if force-hostname is set
644 if( defined($client_force_hostname) && $client_force_hostname eq "true") {
645 if(defined($ENV{HOSTNAME}) && length($ENV{HOSTNAME}) >0 ) {
646 &add_content2xml_hash($register_hash, "force-hostname", $ENV{HOSTNAME});
647 } else {
648 &main::daemon_log("force-hostname was set to true, but no \$HOSTNAME was found in Environment!",0);
649 }
650 }
652 # send xml hash to server with general server passwd
653 my $res = &send_msg_hash_to_target($register_hash, $server, $default_server_key);
655 # if delivery of registration msg succeed
656 if($res eq "0") {
657 # reset try_to_register
658 $try_to_register = 0;
660 # Set fixed client address and mac address
661 $client_ip= &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
662 $client_address= "$client_ip:$client_port";
663 $client_mac_address = $local_mac;
664 $client_dnsname = $dnsname;
665 last;
667 # delivery of registration msg failed
668 } else {
669 # wait 1 sec until trying to register again
670 sleep(1);
671 next;
672 }
674 } # end of while
675 # one circle through all servers finished and no registration succeed
676 if ( $try_to_register >= @servers ) {
677 &write_to_file("gosa-si-no-server-available", $fai_logpath);
678 $kernel->delay_set('register_at_gosa_si_server', $delay_set_time);
680 # delivery of registraion msg succeed, waiting for server response
681 } else {
682 daemon_log("INFO: waiting for msg 'register_at_gosa_si_server'",5);
683 $kernel->delay_set('register_at_gosa_si_server', $delay_set_time);
684 # clear old settings and set it again
685 $kernel->delay('trigger_new_key');
686 $kernel->delay_set('trigger_new_key', $server_key_lifetime);
687 }
689 }
690 return;
691 }
694 sub check_key_and_xml_validity {
695 my ($crypted_msg, $module_key) = @_;
697 my $msg;
698 my $msg_hash;
699 eval{
700 $msg = &decrypt_msg($crypted_msg, $module_key);
701 &main::daemon_log("decrypted_msg: \n$msg", 9);
703 $msg_hash = $xml->XMLin($msg, ForceArray=>1);
705 ##############
706 # check header
707 my $header_l = $msg_hash->{'header'};
708 if( 1 != @{$header_l} ) {
709 die 'no or more headers specified';
710 }
711 my $header = @{$header_l}[0];
712 if( 0 == length $header) {
713 die 'header has length 0';
714 }
716 ##############
717 # check source
718 my $source_l = $msg_hash->{'source'};
719 if( 1 != @{$source_l} ) {
720 die 'no or more than 1 sources specified';
721 }
722 my $source = @{$source_l}[0];
723 if( 0 == length $source) {
724 die 'source has length 0';
725 }
726 unless( $source =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ) {
727 die "source '$source' is neither a complete ip-address with port nor 'GOSA'";
728 }
730 ##############
731 # check target
732 my $target_l = $msg_hash->{'target'};
733 if( 1 != @{$target_l} ) {
734 die 'no or more than 1 targets specified ';
735 }
736 my $target = @{$target_l}[0];
737 if( 0 == length $target) {
738 die 'target has length 0 ';
739 }
740 unless( $target =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ){
741 die "source is neither a complete ip-address with port nor 'GOSA'";
742 }
743 };
744 if($@) {
745 &main::daemon_log("WARNING: do not understand the message or msg is not gosa-si envelope conform:", 5);
746 &main::daemon_log("$@", 8);
747 $msg = undef;
748 $msg_hash = undef;
749 }
751 return ($msg, $msg_hash);
752 }
755 sub check_outgoing_xml_validity {
756 my ($msg) = @_;
758 my $msg_hash;
759 eval{
760 $msg_hash = $xml->XMLin($msg, ForceArray=>1);
762 ##############
763 # check header
764 my $header_l = $msg_hash->{'header'};
765 if( 1 != @{$header_l} ) {
766 die 'no or more than one headers specified';
767 }
768 my $header = @{$header_l}[0];
769 if( 0 == length $header) {
770 die 'header has length 0';
771 }
773 ##############
774 # check source
775 my $source_l = $msg_hash->{'source'};
776 if( 1 != @{$source_l} ) {
777 die 'no or more than 1 sources specified';
778 }
779 my $source = @{$source_l}[0];
780 if( 0 == length $source) {
781 die 'source has length 0';
782 }
783 unless( $source =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ||
784 $source =~ /^GOSA$/i ) {
785 die "source '$source' is neither a complete ip-address with port";
786 }
788 ##############
789 # check target
790 my $target_l = $msg_hash->{'target'};
791 if( 1 != @{$target_l} ) {
792 die "no or more than one targets specified";
793 }
794 foreach my $target (@$target_l) {
795 if( 0 == length $target) {
796 die "target has length 0";
797 }
798 unless( $target =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ) {
799 die "target '$target' is not a complete ip-address with port or a valid target name";
800 }
801 }
802 };
803 if($@) {
804 daemon_log("WARNING: outgoing msg is not gosa-si envelope conform", 5);
805 daemon_log("$@ $msg", 8);
806 $msg_hash = undef;
807 }
808 return ($msg_hash);
809 }
812 sub trigger_new_key {
813 my ($kernel) = $_[KERNEL] ;
815 my $msg = "<xml><header>new_key</header><source>$client_address</source><target>$client_address</target></xml>";
816 &send_msg_to_target($msg, $client_address, $server_key, 'new_key');
818 $kernel->delay_set('trigger_new_key', $server_key_lifetime);
819 }
822 sub trigger_logged_in_users_report {
823 my ($kernel) = $_[KERNEL] ;
825 # just do if client is registered already
826 if( $REGISTERED ) {
827 my $result = qx(/usr/bin/users);
828 my @logged_in_user_list;
829 if( defined $result ) {
830 chomp($result);
831 @logged_in_user_list = split(/\s/, $result);
832 }
834 system("echo 'CURRENTLY_LOGGED_IN ".join(" ", @logged_in_user_list)."' > /var/run/gosa-si-client.socket");
835 $kernel->delay_set('trigger_logged_in_users_report', $trigger_logged_in_users_report_delay);
836 } else {
837 # try it in 10 sec again
838 $kernel->delay_set('trigger_logged_in_users_report', 10);
839 }
840 }
843 sub generic_file_error {
844 my ( $heap, $operation, $errno, $error_string, $wheel_id ) =
845 @_[ HEAP, ARG0, ARG1, ARG2, ARG3 ];
847 my $service = $heap->{services}->{$wheel_id};
848 daemon_log("ERROR: '$service' watcher $operation error $errno: $error_string", 1);
849 daemon_log("ERROR: shutting down '$service' file watcher", 1);
851 delete $heap->{services}->{$wheel_id};
852 delete $heap->{watchers}->{$wheel_id};
853 return;
854 }
857 sub fifo_got_record {
858 my $file_record = $_[ARG0];
859 my $header;
860 my $content = "";
861 daemon_log("DEBUG: fifo got record: $file_record", 7);
863 $file_record =~ /^(\S+)[ ]?([\s\S]+)?$/;
864 if( defined $1 ) {
865 $header = $1;
866 } else {
867 return;
868 }
870 if( defined $2 ) {
871 $content = $2;
872 }
874 my $clmsg_hash = &create_xml_hash("CLMSG_$header", $client_address, $server_address, $content);
875 &add_content2xml_hash($clmsg_hash, "macaddress", $client_mac_address);
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 $kernel->yield('trigger_logged_in_users_report');
961 }
964 sub _default {
965 daemon_log("ERROR: can not handle incoming msg with header '$_[ARG0]'", 1);
966 return;
967 }
970 sub server_input {
971 my ($kernel, $heap, $input, $wheel) = @_[KERNEL, HEAP, ARG0, ARG1];
972 my $remote_ip = $heap->{'remote_ip'},
973 my $error = 0;
974 my $answer;
977 daemon_log("INFO: Incoming msg from '$remote_ip'", 5);
978 daemon_log("DEBUG: Incoming msg:\n$input\n", 9);
980 my ($msg, $msg_hash) = &check_key_and_xml_validity($input, $server_key);
981 if( (!$msg) || (!$msg_hash) ) {
982 daemon_log("WARNING: Deciphering of incoming msg failed", 3);
983 if($server_address =~ /$remote_ip/) {
984 # got a msg from gosa-si-server which can not be decrypted, may the secrete not up-to-date
985 # cause a reregistering with a new secrete handshake
986 daemon_log("WARNING: Message from gosa-si-server could not be understood, cause reregistering at server", 3);
988 # if client is alread in a registration process, that means not registered, do nothing
989 # if not, cause re-registration
990 if (not $REGISTERED) {
991 &daemon_log("WARNING: gosa-si-client is already in a registration process so ignore this message", 3);
992 } else {
993 $REGISTERED = 0;
994 $kernel->post('client_session', 'register_at_gosa_si_server');
995 }
996 }
997 $error++;
998 }
1001 ######################
1002 # process incoming msg
1003 if( $error == 0 ) {
1004 my $header = @{$msg_hash->{header}}[0];
1005 my $source = @{$msg_hash->{source}}[0];
1007 if( exists $event_hash->{$header} ) {
1009 # a event exists with the header as name
1010 daemon_log("INFO: found event '$header' at event-module '".$event_hash->{$header}."'", 5);
1011 no strict 'refs';
1012 $answer = &{$event_hash->{$header}."::$header"}($msg, $msg_hash);
1013 }
1014 else {
1015 daemon_log("WARNING: no event '$header' found in event modules under $event_dir", 3);
1016 }
1017 }
1019 ########
1020 # answer
1021 if( $answer ) {
1023 #check gosa-si envelope validity
1024 my $answer_hash = &check_outgoing_xml_validity($answer);
1026 if( $answer_hash ) {
1027 # answer is valid
1029 # preprocessing
1030 if( $answer =~ "<header>registered</header>") {
1031 # set registered flag to true to stop sending further registered msgs
1032 $REGISTERED = 1;
1033 }
1034 else {
1035 $answer =~ /<header>(\S+)<\/header>/;
1036 &send_msg_to_target($answer, $server_address, $server_key, $1);
1037 }
1039 # postprocessing
1040 if( $answer =~ "<header>new_key</header>") {
1041 # set new key to global variable
1042 $answer =~ /<new_key>(\S*?)<\/new_key>/;
1043 my $new_key = $1;
1044 $server_key = $new_key;
1045 }
1046 }
1048 }
1050 return;
1051 }
1054 #==== MAIN = main ==============================================================
1055 # parse commandline options
1056 Getopt::Long::Configure( "bundling" );
1057 GetOptions("h|help" => \&usage,
1058 "c|config=s" => \$cfg_file,
1059 "f|foreground" => \$foreground,
1060 "v|verbose+" => \$verbose,
1061 );
1063 # read and set config parameters
1064 &check_cmdline_param ;
1065 &read_configfile($cfg_file, %cfg_defaults);
1066 &check_pid;
1069 # forward error messages to logfile
1070 if ( ! $foreground ) {
1071 open( STDIN, '+>/dev/null' );
1072 open( STDOUT, '+>&STDIN' );
1073 open( STDERR, '+>&STDIN' );
1074 }
1076 # Just fork, if we are not in foreground mode
1077 if( ! $foreground ) {
1078 chdir '/' or die "Can't chdir to /: $!";
1079 $pid = fork;
1080 setsid or die "Can't start a new session: $!";
1081 umask 0;
1082 } else {
1083 $pid = $$;
1084 }
1086 # Do something useful - put our PID into the pid_file
1087 if( 0 != $pid ) {
1088 open( LOCK_FILE, ">$pid_file" );
1089 print LOCK_FILE "$pid\n";
1090 close( LOCK_FILE );
1091 if( !$foreground ) {
1092 exit( 0 )
1093 };
1094 }
1096 # parse head url and revision from svn
1097 my $client_status_hash = { 'developmental'=>'revision', 'stable'=>'release'};
1098 $client_version =~ /^\$HeadURL: (\S+) \$:\$Rev: (\d+) \$$/;
1099 $client_headURL = defined $1 ? $1 : 'unknown' ;
1100 $client_revision = defined $2 ? $2 : 'unknown' ;
1101 if ($client_headURL =~ /\/tag\// ||
1102 $client_headURL =~ /\/branches\// ) {
1103 $client_status = "stable";
1104 } else {
1105 $client_status = "developmental" ;
1106 }
1108 daemon_log(" ", 1);
1109 daemon_log("$prg started!", 1);
1110 daemon_log("INFO: status: $client_status", 1);
1111 daemon_log("INFO: ".$client_status_hash->{$client_status}.": $client_revision", 1);
1113 # delete old DBsqlite lock files
1114 system('rm -f /tmp/gosa_si_lock*gosa-si-client*');
1116 # detect ip and mac address and complete host address
1117 $client_address = $client_ip.":".$client_port;
1118 my $network_interface= &get_interface_for_ip($client_ip);
1119 $client_mac_address= &get_mac($network_interface);
1120 daemon_log("INFO: ip address detected: $client_ip", 1);
1121 daemon_log("INFO: gosa-si-client mac address detected: $client_mac_address", 1);
1124 # import events
1125 my ($error, $result, $tmp_hash) = &import_events($event_dir);
1126 $event_hash = $tmp_hash;
1128 foreach my $log_line (@$result) {
1129 if ($log_line =~ / succeed: /) {
1130 &main::daemon_log("0 DEBUG: $log_line", 7);
1131 } else {
1132 &main::daemon_log("0 ERROR: $log_line", 1);
1133 }
1134 }
1137 # compute hardware checksum
1138 $gotoHardwareChecksum= &generate_hw_digest();
1139 daemon_log("INFO: gotoHardwareChecksum detected: $gotoHardwareChecksum", 1);
1142 # create socket for incoming xml messages
1143 POE::Component::Server::TCP->new(
1144 Alias => 'gosa-si-client',
1145 Port => $client_port,
1146 ClientInput => \&server_input,
1147 );
1148 daemon_log("INFO: start socket for incoming xml messages at port '$client_port' ", 1);
1151 # prepare variables
1152 if( inet_aton($server_ip) ){ $server_ip = inet_ntoa(inet_aton($server_ip)); }
1153 if (defined $server_ip && defined $server_port) {
1154 $server_address = $server_ip.":".$server_port;
1155 }
1156 $xml = new XML::Simple();
1157 $default_server_key = $server_key;
1160 # add gosa-si-server address from config file at first position of server list
1161 my $server_check_cfg = Config::IniFiles->new( -file => $cfg_file );
1162 my $server_check = (defined($server_check_cfg))?$server_check_cfg->val( "server", "ip"):undef;
1163 if( defined $server_check ) {
1164 unshift(@servers, $server_address);
1165 my $servers_string = join(", ", @servers);
1166 daemon_log("INFO: found servers in configuration file: $servers_string", 5);
1167 } else {
1168 my @tmp_servers;
1169 if ( !$server_domain) {
1170 # Try our DNS Searchlist
1171 for my $domain(get_dns_domains()) {
1172 chomp($domain);
1173 my @tmp_domains= &get_server_addresses($domain);
1174 if(@tmp_domains) {
1175 for my $tmp_server(@tmp_domains) {
1176 push @tmp_servers, $tmp_server;
1177 }
1178 }
1179 }
1180 if(@tmp_servers && length(@tmp_servers)==0) {
1181 daemon_log("ERROR: please specify a gosa-si-server address or a domain in config file", 1);
1182 kill 2, $$;
1183 }
1184 } else {
1185 @tmp_servers = &get_server_addresses($server_domain);
1186 if( 0 == @tmp_servers ) {
1187 daemon_log("ERROR: no gosa-si-server found in DNS for domain '$server_domain'",1);
1188 daemon_log("ERROR: please specify a gosa-si-server address or a domain in config file", 1);
1189 kill 2, $$;
1190 }
1191 }
1193 foreach my $server (@tmp_servers) {
1194 unshift(@servers, $server);
1195 }
1196 my $servers_string = join(", ", @servers);
1197 daemon_log("INFO: found servers in DNS: $servers_string", 5);
1198 }
1201 # open fifo for non-gosa-si-client-msgs to gosa-si-server
1202 POSIX::mkfifo("$gosa_si_client_fifo", "0600");
1205 POE::Session->create(
1206 inline_states => {
1207 _start => \&_start,
1208 _default => \&_default,
1209 sig_handler => \&sig_handler,
1210 register_at_gosa_si_server => \®ister_at_gosa_si_server,
1212 # trigger periodical tasks
1213 trigger_new_key => \&trigger_new_key,
1214 trigger_logged_in_users_report => \&trigger_logged_in_users_report,
1216 # handle records from each defined file differently
1217 fifo_record => \&fifo_got_record,
1219 # handle file resets and errors the same way for each file
1220 file_reset => \&generic_file_reset,
1221 file_error => \&generic_file_error,
1222 }
1223 );
1225 POE::Kernel->run();
1226 exit;