45a3b29389495b436906048905a35af8769e0b53
1 #!/usr/bin/perl
2 #===============================================================================
3 #
4 # FILE: gosa-server
5 #
6 # USAGE: gosa-si-client
7 #
8 # DESCRIPTION:
9 #
10 # OPTIONS: ---
11 # REQUIREMENTS: libnetaddr-ip-perl
12 # BUGS: ---
13 # NOTES:
14 # AUTHOR: (Andreas Rettenberger), <rettenberger@gonicus.de>
15 # COMPANY:
16 # VERSION: 1.0
17 # CREATED: 12.09.2007 08:54:41 CEST
18 # REVISION: ---
19 #===============================================================================
21 my $client_version = '$HeadURL$:$Rev$';
23 use strict;
24 use warnings;
25 use Getopt::Long;
26 use Config::IniFiles;
27 use POSIX;
28 use Time::HiRes qw( gettimeofday );
30 use POE qw(Component::Server::TCP Wheel::FollowTail Wheel::Run);
31 use IO::Socket::INET;
32 use NetAddr::IP;
33 use Data::Dumper;
34 use Crypt::Rijndael;
35 use GOSA::GosaSupportDaemon;
36 use Digest::MD5 qw(md5_hex md5 md5_base64);
37 use MIME::Base64;
38 use XML::Simple;
39 use File::Basename;
40 use File::Spec;
41 use Fcntl;
43 # Workaround: need pure perl to make it work with UTF-8 :-(
44 $XML::Simple::PREFERRED_PARSER= "XML::SAX::PurePerl";
46 my $client_headURL;
47 my $client_revision;
48 my $client_status;
49 my $event_dir = "/usr/lib/gosa-si/client/events";
50 use lib "/usr/lib/gosa-si/client/events";
52 my (%cfg_defaults, $foreground, $verbose, $pid_file, $procid, $pid, $log_file, $fai_logpath);
53 my ($server_ip, $server_port, $server_timeout, $server_domain, $server_key_lifetime);
54 my ($client_port, $ldap_enabled, $ldap_config, $pam_config, $nss_config);
55 my ($root_uid, $adm_gid);
56 my $xml;
57 my $event_hash;
58 my $default_server_key;
59 my @servers;
60 my $gotoHardwareChecksum;
61 my $gosa_si_client_fifo;
62 my %files_to_watch;
63 $verbose= 1;
65 # globalise variables which are used in imported events
66 our $global_kernel;
67 our $cfg_file;
68 our $opts_file;
69 our $server_address;
70 our $client_address;
71 our $client_ip;
72 our $client_mac_address;
73 our $client_dnsname;
74 our $client_force_hostname;
75 our $server_key;
77 # default variables
78 our $REGISTERED = 0;
80 # path to fifo for non-gosa-si-client messages to gosa-si-server
81 $gosa_si_client_fifo = "/var/run/gosa-si-client.socket";
82 %files_to_watch = (fifo => $gosa_si_client_fifo);
84 # in function register_at_gosa_si_server, after which period of seconds a new registration should be tried if a registration was
85 # not successful until now
86 my $delay_set_time = 10;
87 our $prg= basename($0);
89 # all n seconds the client reports logged_in users to gosa-si-server
90 my $trigger_logged_in_users_report_delay = 600;
92 # all n seconds the client reports messages seen by user
93 my $trigger_seen_messages_delay = 30;
95 # directory where all log files from installation are stored
96 my $fai_log_dir = "/var/log/fai";
98 %cfg_defaults = (
99 "general" =>
100 {"log-file" => [\$log_file, "/var/run/".$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 },
116 "server" => {
117 "ip" => [\$server_ip, "127.0.0.1"],
118 "port" => [\$server_port, "20081"],
119 "key" => [\$server_key, ""],
120 "timeout" => [\$server_timeout, 10],
121 "key-lifetime" => [\$server_key_lifetime, 600],
122 },
124 );
127 #=== FUNCTIONS = functions =====================================================
129 sub usage {
130 print STDERR << "EOF" ;
131 usage: $prg [-hvf] [-c config]
133 -h : this (help) message
134 -c <file> : config file
135 -f : foreground, process will not be forked to background
136 -v : be verbose (multiple to increase verbosity)
138 EOF
139 print "\n" ;
140 }
142 #=== FUNCTION ================================================================
143 # NAME: check_cmdline_param
144 # PARAMETERS:
145 # RETURNS:
146 # DESCRIPTION:
147 #===============================================================================
148 sub check_cmdline_param () {
149 my $err_config;
150 my $err_counter = 0;
151 if(not defined($cfg_file)) {
152 $cfg_file = "/etc/gosa-si/client.conf";
153 if(! -r $cfg_file) {
154 $err_config = "please specify a config file";
155 $err_counter += 1;
156 }
157 }
158 if( $err_counter > 0 ) {
159 &usage( "", 1 );
160 if( defined( $err_config)) { print STDERR "$err_config\n"}
161 print STDERR "\n";
162 exit( -1 );
163 }
164 }
166 #=== FUNCTION ================================================================
167 # NAME: check_pid
168 # PARAMETERS:
169 # RETURNS:
170 # DESCRIPTION:
171 #===============================================================================
172 sub check_pid {
173 $pid = -1;
174 # Check, if we are already running
175 if( open(LOCK_FILE, "<$pid_file") ) {
176 $pid = <LOCK_FILE>;
177 if( defined $pid ) {
178 chomp( $pid );
179 if( -f "/proc/$pid/stat" ) {
180 my($stat) = `cat /proc/$pid/stat` =~ m/$pid \((.+)\).*/;
181 if( $0 eq $stat ) {
182 close( LOCK_FILE );
183 exit -1;
184 }
185 }
186 }
187 close( LOCK_FILE );
188 unlink( $pid_file );
189 }
191 # create a syslog msg if it is not to possible to open PID file
192 if (not sysopen(LOCK_FILE, $pid_file, O_WRONLY|O_CREAT|O_EXCL, 0644)) {
193 my($msg) = "Couldn't obtain lockfile '$pid_file' ";
194 if (open(LOCK_FILE, '<', $pid_file)
195 && ($pid = <LOCK_FILE>))
196 {
197 chomp($pid);
198 $msg .= "(PID $pid)\n";
199 } else {
200 $msg .= "(unable to read PID)\n";
201 }
202 if( ! ($foreground) ) {
203 openlog( $0, "cons,pid", "daemon" );
204 syslog( "warning", $msg );
205 closelog();
206 }
207 else {
208 print( STDERR " $msg " );
209 }
210 exit( -1 );
211 }
212 }
215 sub sig_int_handler {
216 my ($signal) = @_;
218 daemon_log("shutting down gosa-si-client", 1);
219 system("kill `ps -C gosa-si-client -o pid=`");
220 }
221 $SIG{INT} = \&sig_int_handler;
224 #=== FUNCTION ================================================================
225 # NAME: logging
226 # PARAMETERS: level - string - default 'info'
227 # msg - string -
228 # facility - string - default 'LOG_DAEMON'
229 # RETURNS:
230 # DESCRIPTION:
231 #===============================================================================
232 sub daemon_log {
233 # log into log_file
234 my( $msg, $level ) = @_;
235 if(not defined $msg) { return }
236 if(not defined $level) { $level = 1 }
237 if(defined $log_file){
238 my $open_log_fh = sysopen(LOG_HANDLE, $log_file, O_WRONLY | O_CREAT | O_APPEND , 0440);
239 if(not $open_log_fh) {
240 print STDERR "cannot open $log_file: $!";
241 return;
242 }
243 # check owner and group of log_file and update settings if necessary
244 my ($dev, $ino, $mode, $nlink, $uid, $gid, $rdev, $size, $atime, $mtime, $ctime, $blksize, $blocks) = stat($log_file);
245 if((not $uid eq $root_uid) || (not $gid eq $adm_gid)) {
246 chown($root_uid, $adm_gid, $log_file);
247 }
249 chomp($msg);
250 if($level <= $verbose){
251 my ($seconds, $minutes, $hours, $monthday, $month,
252 $year, $weekday, $yearday, $sommertime) = localtime(time);
253 $hours = $hours < 10 ? $hours = "0".$hours : $hours;
254 $minutes = $minutes < 10 ? $minutes = "0".$minutes : $minutes;
255 $seconds = $seconds < 10 ? $seconds = "0".$seconds : $seconds;
256 my @monthnames = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
257 $month = $monthnames[$month];
258 $monthday = $monthday < 10 ? $monthday = "0".$monthday : $monthday;
259 $year+=1900;
261 my $log_msg = "$month $monthday $hours:$minutes:$seconds $prg $msg\n";
262 print LOG_HANDLE $log_msg;
263 if( $foreground ) {
264 print STDERR $log_msg;
265 }
266 }
267 close( LOG_HANDLE );
268 }
269 }
272 #=== FUNCTION ================================================================
273 # NAME: get_mac
274 # PARAMETERS: interface name (i.e. eth0)
275 # RETURNS: (mac address)
276 # DESCRIPTION: Uses ioctl to get mac address directly from system.
277 #===============================================================================
278 sub get_mac {
279 my $ifreq= shift;
280 my $result;
281 if ($ifreq && length($ifreq) > 0) {
282 if($ifreq eq "all") {
283 if(defined($server_ip)) {
284 $result = &get_local_mac_for_remote_ip($server_ip);
285 }
286 elsif ($client_mac_address && length($client_mac_address) > 0 && !($client_mac_address eq "00:00:00:00:00:00")){
287 $result = &client_mac_address;
288 }
289 else {
290 $result = "00:00:00:00:00:00";
291 }
292 } else {
293 my $SIOCGIFHWADDR= 0x8927; # man 2 ioctl_list
295 # A configured MAC Address should always override a guessed value
296 if ($client_mac_address and length($client_mac_address) > 0 and not($client_mac_address eq "00:00:00:00:00:00")) {
297 $result= $client_mac_address;
298 }
299 else {
300 socket SOCKET, PF_INET, SOCK_DGRAM, getprotobyname('ip')
301 or die "socket: $!";
303 if(ioctl SOCKET, $SIOCGIFHWADDR, $ifreq) {
304 my ($if, $mac)= unpack 'h36 H12', $ifreq;
306 if (length($mac) > 0) {
307 $mac=~ m/^([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])$/;
308 $mac= sprintf("%s:%s:%s:%s:%s:%s", $1, $2, $3, $4, $5, $6);
309 $result = $mac;
310 }
311 }
312 }
313 }
314 }
315 return $result;
316 }
319 #=== FUNCTION ================================================================
320 # NAME: get_local_mac_for_remote_ip
321 # PARAMETERS: none (takes server_ip from global variable)
322 # RETURNS: (ip address from interface that is used for communication)
323 # DESCRIPTION: Uses ioctl to get routing table from system, checks which entry
324 # matches (defaultroute last).
325 #===============================================================================
326 sub get_local_mac_for_remote_ip {
327 my $server_ip= shift;
328 my $result= "00:00:00:00:00:00";
330 if($server_ip =~ /^[a-z][a-z0-9\.]$/i) {
331 my $ip_address = inet_ntoa(scalar gethostbyname($server_ip));
332 if(defined($ip_address) && $ip_address =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}/) {
333 # Write ip address to $server_ip variable
334 $server_ip = $ip_address;
335 }
336 }
338 if($server_ip =~ /^(\d\d?\d?\.){3}\d\d?\d?$/) {
339 my $PROC_NET_ROUTE= ('/proc/net/route');
341 open(PROC_NET_ROUTE, "<$PROC_NET_ROUTE")
342 or die "Could not open $PROC_NET_ROUTE";
344 my @ifs = <PROC_NET_ROUTE>;
346 close(PROC_NET_ROUTE);
348 # Eat header line
349 shift @ifs;
350 chomp @ifs;
351 foreach my $line(@ifs) {
352 my ($Iface,$Destination,$Gateway,$Flags,$RefCnt,$Use,$Metric,$Mask,$MTU,$Window,$IRTT)=split(/\s/, $line);
353 my $destination;
354 my $mask;
355 my ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Destination);
356 $destination= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
357 ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Mask);
358 $mask= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
359 if(new NetAddr::IP($server_ip)->within(new NetAddr::IP($destination, $mask))) {
360 # destination matches route, save mac and exit
361 $result= &get_mac($Iface);
362 last;
363 }
364 }
365 } else {
366 daemon_log("get_local_mac_for_remote_ip was called with a non-ip parameter: $server_ip", 1);
367 }
368 return $result;
369 }
372 sub generate_hw_digest {
373 my $hw_data;
374 foreach my $line (split /\n/, `cat /proc/bus/pci/devices`) {
375 $hw_data.= sprintf "%s", $line =~ /[^\s]+\s([^\s]+)\s.*/;
376 }
377 return(md5_base64($hw_data));
378 }
381 sub create_ciphering {
382 my ($passwd) = @_;
383 if((!defined($passwd)) || length($passwd)==0) {
384 $passwd = "";
385 }
386 $passwd = substr(md5_hex("$passwd") x 32, 0, 32);
387 my $iv = substr(md5_hex('GONICUS GmbH'),0, 16);
388 my $my_cipher = Crypt::Rijndael->new($passwd , Crypt::Rijndael::MODE_CBC());
389 $my_cipher->set_iv($iv);
390 return $my_cipher;
391 }
394 sub encrypt_msg {
395 my ($msg, $key) = @_;
396 my $my_cipher = &create_ciphering($key);
397 my $len;
398 {
399 use bytes;
400 $len= 16-length($msg)%16;
401 }
402 $msg = "\0"x($len).$msg;
403 $msg = $my_cipher->encrypt($msg);
404 chomp($msg = &encode_base64($msg));
405 # there are no newlines allowed inside msg
406 $msg=~ s/\n//g;
407 return $msg;
408 }
411 sub decrypt_msg {
413 my ($msg, $key) = @_ ;
414 $msg = &decode_base64($msg);
415 my $my_cipher = &create_ciphering($key);
416 $msg = $my_cipher->decrypt($msg);
417 $msg =~ s/\0*//g;
418 return $msg;
419 }
422 #=== FUNCTION ================================================================
423 # NAME: send_msg_hash_to_target
424 # PARAMETERS: msg_hash - hash - xml_hash created with function create_xml_hash
425 # PeerAddr string - socket address to send msg
426 # PeerPort string - socket port, if not included in socket address
427 # RETURNS: nothing
428 # DESCRIPTION: ????
429 #===============================================================================
430 sub send_msg_hash_to_target {
431 my ($msg_hash, $address, $encrypt_key) = @_ ;
432 my $msg = &create_xml_string($msg_hash);
433 my $header = @{$msg_hash->{'header'}}[0];
434 my $error = &send_msg_to_target($msg, $address, $encrypt_key, $header);
436 return $error;
437 }
440 sub send_msg_to_target {
441 my ($msg, $address, $encrypt_key, $msg_header) = @_ ;
442 my $error = 0;
444 if( $msg_header ) { $msg_header = "'$msg_header'-"; }
445 else { $msg_header = ""; }
447 # Memorize own source address
448 $msg =~ /<source>(\S+)<\/source>/;
449 my $own_source_address = $1;
451 # encrypt xml msg
452 my $crypted_msg = &encrypt_msg($msg, $encrypt_key);
454 # opensocket
455 my $socket = &open_socket($address);
456 if( !$socket ) {
457 daemon_log("WARNING: cannot send ".$msg_header."msg to $address , host not reachable", 3);
458 if ($REGISTERED == 1) {
459 $REGISTERED = 0; # if server is not available, cause reregistering
460 daemon_log("INFO: cause reregistering at gosa-si-server", 5);
461 $global_kernel->yield('register_at_gosa_si_server');
463 }
464 $error++;
465 }
467 # send xml msg
468 if( $error == 0 ) {
469 print $socket $crypted_msg.";$own_source_address\n";
470 daemon_log("INFO: send ".$msg_header."msg to $address", 5);
471 daemon_log("DEBUG: message:\n$msg", 9);
472 }
474 # close socket in any case
475 if( $socket ) {
476 close $socket;
477 }
479 return $error;
480 }
483 sub write_to_file {
484 my ($string, $file) = @_;
485 my $error = 0;
487 if( not defined $file || not -f $file ) {
488 &main::daemon_log("ERROR: $prg: check '-f file' failed: $file", 1);
489 $error++;
490 }
491 if( not defined $string || 0 == length($string)) {
492 &main::daemon_log("ERROR: $prg: empty string to write to file '$file'", 1);
493 $error++;
494 }
496 if( $error == 0 ) {
498 chomp($string);
500 if (open(FILE, ">> $file")){
501 print FILE $string."\n";
502 close(FILE);
503 }
504 }
506 return;
507 }
510 sub open_socket {
511 my ($PeerAddr, $PeerPort) = @_ ;
512 if(defined($PeerPort)){
513 $PeerAddr = $PeerAddr.":".$PeerPort;
514 }
515 my $socket;
516 $socket = new IO::Socket::INET(PeerAddr => $PeerAddr,
517 Porto => "tcp",
518 Type => SOCK_STREAM,
519 Timeout => 5,
520 );
521 if(not defined $socket) {
522 return;
523 }
524 &daemon_log("DEBUG: open_socket: $PeerAddr", 7);
525 return $socket;
526 }
529 #=== FUNCTION ================================================================
530 # NAME: register_at_server
531 # PARAMETERS:
532 # RETURNS:
533 # DESCRIPTION:
534 #===============================================================================
535 sub register_at_gosa_si_server {
536 my ($kernel) = $_[KERNEL];
537 my $try_to_register = 0;
539 # if client is already registered, stop registration process
540 if ($REGISTERED) {
541 $kernel->delay('register_at_gosa_si_server');
543 # client is not registered, start registration process
544 } else {
545 # clear all other triggered events and wait till registration was successful
546 $kernel->delay('trigger_new_key');
548 # create new passwd and ciphering object for client-server communication
549 $server_key = &create_passwd();
551 my $events = join( ",", keys %{$event_hash} );
552 while(1) {
553 $try_to_register++;
555 # after one complete round through all server, stop trying to register
556 if( $try_to_register > @servers ) { last; }
558 # fetch first gosa-si-server from @servers
559 # append shifted gosa-si-server at the end of @servers, so looking for servers never stop if
560 # a registration never occured
561 my $server = shift(@servers);
562 push( @servers, $server );
564 # Check if our ip is resolvable - if not: don't try to register
565 if(!(defined($server) && $server =~ m/^[0-9\.]*?:.*$/)) {
566 &main::daemon_log("ERROR: Server with address '".defined($server)?$server:""."' is invalid!", 1);
567 if (length(@servers) == 1) {
568 &main::daemon_log("ERROR: No valid servers found!", 1);
569 exit(1);
570 }
571 }
573 # Check if our ip is resolvable - if not: don't try to register
574 my $ip= &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
575 my $dnsname= gethostbyaddr(inet_aton($ip), AF_INET);
576 if(!defined($dnsname)) {
577 if( defined($client_force_hostname) && $client_force_hostname eq "true") {
578 $dnsname = `hostname`;
579 } else {
580 &write_to_file("goto-error-dns:$ip", $fai_logpath);
581 &main::daemon_log("ERROR: ip is not resolvable, no registration possible. Write 'goto-error-dns:$ip' to $fai_logpath", 1);
582 exit(1);
583 }
584 }
586 # create registration msg
587 my $local_ip = &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
588 my $local_mac = &get_local_mac_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
589 my $register_hash = &create_xml_hash("here_i_am", $local_ip.":".$client_port, $server);
590 &add_content2xml_hash($register_hash, "new_passwd", $server_key);
591 &add_content2xml_hash($register_hash, "mac_address", $local_mac);
592 &add_content2xml_hash($register_hash, "events", $events);
593 &add_content2xml_hash($register_hash, "client_status", $client_status);
594 &add_content2xml_hash($register_hash, "client_revision", $client_revision);
595 &add_content2xml_hash($register_hash, "gotoHardwareChecksum", $gotoHardwareChecksum);
596 &add_content2xml_hash($register_hash, "key_lifetime", $server_key_lifetime);
598 # Add $HOSTNAME from ENV if force-hostname is set
599 if( defined($client_force_hostname) && $client_force_hostname eq "true") {
600 if(defined($ENV{HOSTNAME}) && length($ENV{HOSTNAME}) >0 ) {
601 &add_content2xml_hash($register_hash, "force-hostname", $ENV{HOSTNAME});
602 } else {
603 &main::daemon_log("force-hostname was set to true, but no \$HOSTNAME was found in Environment!",0);
604 }
605 }
607 # send xml hash to server with general server passwd
608 my $res = &send_msg_hash_to_target($register_hash, $server, $default_server_key);
610 # if delivery of registration msg succeed
611 if($res eq "0") {
612 # reset try_to_register
613 $try_to_register = 0;
615 # Set fixed client address and mac address
616 $client_ip= &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
617 $client_address= "$client_ip:$client_port";
618 $client_mac_address = $local_mac;
619 $client_dnsname = $dnsname;
620 last;
622 # delivery of registration msg failed
623 } else {
624 # wait 1 sec until trying to register again
625 sleep(1);
626 next;
627 }
629 } # end of while
630 # one circle through all servers finished and no registration succeed
631 if ( $try_to_register >= @servers ) {
632 &write_to_file("gosa-si-no-server-available", $fai_logpath);
633 $kernel->delay_set('register_at_gosa_si_server', $delay_set_time);
635 # delivery of registraion msg succeed, waiting for server response
636 } else {
637 daemon_log("INFO: waiting for msg 'register_at_gosa_si_server'",5);
638 $kernel->delay_set('register_at_gosa_si_server', $delay_set_time);
639 # clear old settings and set it again
640 $kernel->delay('trigger_new_key');
641 $kernel->delay_set('trigger_new_key', $server_key_lifetime);
642 }
644 }
645 return;
646 }
649 sub check_key_and_xml_validity {
650 my ($crypted_msg, $module_key) = @_;
652 my $msg;
653 my $msg_hash;
654 eval{
655 $msg = &decrypt_msg($crypted_msg, $module_key);
656 &main::daemon_log("decrypted_msg: \n$msg", 9);
658 $msg_hash = $xml->XMLin($msg, ForceArray=>1);
660 ##############
661 # check header
662 my $header_l = $msg_hash->{'header'};
663 if( 1 != @{$header_l} ) {
664 die 'no or more headers specified';
665 }
666 my $header = @{$header_l}[0];
667 if( 0 == length $header) {
668 die 'header has length 0';
669 }
671 ##############
672 # check source
673 my $source_l = $msg_hash->{'source'};
674 if( 1 != @{$source_l} ) {
675 die 'no or more than 1 sources specified';
676 }
677 my $source = @{$source_l}[0];
678 if( 0 == length $source) {
679 die 'source has length 0';
680 }
681 unless( $source =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ) {
682 die "source '$source' is neither a complete ip-address with port nor 'GOSA'";
683 }
685 ##############
686 # check target
687 my $target_l = $msg_hash->{'target'};
688 if( 1 != @{$target_l} ) {
689 die 'no or more than 1 targets specified ';
690 }
691 my $target = @{$target_l}[0];
692 if( 0 == length $target) {
693 die 'target has length 0 ';
694 }
695 unless( $target =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ){
696 die "source is neither a complete ip-address with port nor 'GOSA'";
697 }
698 };
699 if($@) {
700 &main::daemon_log("WARNING: do not understand the message or msg is not gosa-si envelope conform:", 5);
701 &main::daemon_log("$@", 8);
702 $msg = undef;
703 $msg_hash = undef;
704 }
706 return ($msg, $msg_hash);
707 }
710 sub check_outgoing_xml_validity {
711 my ($msg) = @_;
713 my $msg_hash;
714 eval{
715 $msg_hash = $xml->XMLin($msg, ForceArray=>1);
717 ##############
718 # check header
719 my $header_l = $msg_hash->{'header'};
720 if( 1 != @{$header_l} ) {
721 die 'no or more than one headers specified';
722 }
723 my $header = @{$header_l}[0];
724 if( 0 == length $header) {
725 die 'header has length 0';
726 }
728 ##############
729 # check source
730 my $source_l = $msg_hash->{'source'};
731 if( 1 != @{$source_l} ) {
732 die 'no or more than 1 sources specified';
733 }
734 my $source = @{$source_l}[0];
735 if( 0 == length $source) {
736 die 'source has length 0';
737 }
738 unless( $source =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ||
739 $source =~ /^GOSA$/i ) {
740 die "source '$source' is neither a complete ip-address with port";
741 }
743 ##############
744 # check target
745 my $target_l = $msg_hash->{'target'};
746 if( 1 != @{$target_l} ) {
747 die "no or more than one targets specified";
748 }
749 foreach my $target (@$target_l) {
750 if( 0 == length $target) {
751 die "target has length 0";
752 }
753 unless( $target =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ) {
754 die "target '$target' is not a complete ip-address with port or a valid target name";
755 }
756 }
757 };
758 if($@) {
759 daemon_log("WARNING: outgoing msg is not gosa-si envelope conform", 5);
760 daemon_log("$@ $msg", 8);
761 $msg_hash = undef;
762 }
763 return ($msg_hash);
764 }
767 sub trigger_new_key {
768 my ($kernel) = $_[KERNEL] ;
770 my $msg = "<xml><header>new_key</header><source>$client_address</source><target>$client_address</target></xml>";
771 &send_msg_to_target($msg, $client_address, $server_key, 'new_key');
773 $kernel->delay_set('trigger_new_key', $server_key_lifetime);
774 }
777 sub trigger_logged_in_users_report {
778 my ($kernel) = $_[KERNEL] ;
780 # just do if client is registered already
781 if( $REGISTERED ) {
782 my $result = qx(/usr/bin/users);
783 my @logged_in_user_list;
784 if( defined $result ) {
785 chomp($result);
786 @logged_in_user_list = split(/\s/, $result);
787 }
789 system("echo 'CURRENTLY_LOGGED_IN ".join(" ", @logged_in_user_list)."' > /var/run/gosa-si-client.socket");
790 $kernel->delay_set('trigger_logged_in_users_report', $trigger_logged_in_users_report_delay);
791 } else {
792 # try it in 10 sec again
793 $kernel->delay_set('trigger_logged_in_users_report', 10);
794 }
795 }
798 sub trigger_seen_messages {
799 my ($kernel) = $_[KERNEL] ;
801 # Select all files under /tmp with prefix 'goto_notify'
802 my $goto_dir = "/tmp";
803 opendir(DIR, $goto_dir);
804 my @goto_files = grep { /.goto_notify$/ && -f "$goto_dir/$_" } readdir(DIR);
805 closedir DIR;
807 # Check if file has 'seen' tag
808 foreach my $goto_file (@goto_files) {
809 open(FILE, "$goto_dir/$goto_file");
810 my @lines = <FILE>;
811 close FILE;
813 my $source;
814 my $target;
815 my $usr;
816 my $subject;
817 my $message;
818 my $seen = 0;
819 chomp(@lines);
820 foreach my $line (@lines) {
821 if ($line =~ /^source:([\S\s]*)$/) {
822 $source = $1
823 }
824 if ($line =~ /^target:([\S\s]*)$/) {
825 $target = $1;
826 }
827 if ($line =~ /^usr:([\S\s]*)$/) {
828 $usr = $1;
829 }
830 if ($line =~ /^subject:([\S\s]*)$/) {
831 $subject = $1;
832 }
833 if ($line =~ /^message:([\S\s]*)$/) {
834 $message = $1;
835 }
836 if ($line =~ /^seen$/) {
837 $seen++;
838 }
839 }
841 # Send 'confirm_usr_msg' back to msg-hosting server
842 if ($seen) {
843 my %data = ('usr'=>$usr, 'subject'=>$subject, 'message'=>$message);
844 my $confirm_msg = &build_msg("confirm_usr_msg", $target, $source, \%data);
845 my $send_error = &send_msg_to_target($confirm_msg, $server_address, $server_key);
847 # Delete file
848 if (not $send_error) {
849 system("rm $goto_dir/$goto_file");
850 }
851 }
852 }
854 $kernel->delay_set('trigger_seen_messages', $trigger_seen_messages_delay);
856 return;
857 }
860 sub generic_file_error {
861 my ( $heap, $operation, $errno, $error_string, $wheel_id ) =
862 @_[ HEAP, ARG0, ARG1, ARG2, ARG3 ];
864 my $service = $heap->{services}->{$wheel_id};
865 daemon_log("ERROR: '$service' watcher $operation error $errno: $error_string", 1);
866 daemon_log("ERROR: shutting down '$service' file watcher", 1);
868 delete $heap->{services}->{$wheel_id};
869 delete $heap->{watchers}->{$wheel_id};
870 return;
871 }
874 sub fifo_got_record {
875 my $file_record = $_[ARG0];
876 my $header;
877 my $content = "";
878 daemon_log("DEBUG: fifo got record: $file_record", 7);
880 $file_record =~ /^(\S+)[ ]?([\s\S]+)?$/;
881 if( defined $1 ) {
882 $header = $1;
883 } else {
884 return;
885 }
887 if( defined $2 ) {
888 $content = $2;
889 }
891 my $clmsg_hash = &create_xml_hash("CLMSG_$header", $client_address, $server_address, $content);
892 &add_content2xml_hash($clmsg_hash, "macaddress", $client_mac_address);
893 my $utc_ts = &main::get_utc_time();
894 &add_content2xml_hash($clmsg_hash, "timestamp", $utc_ts);
895 my $clmsg = &create_xml_string($clmsg_hash);
896 &send_msg_to_target($clmsg, $server_address, $server_key, "CLMSG_$header");
898 # if installation finished, save all log files
899 if ($file_record eq "TASKBEGIN savelog") {
900 &save_fai_log($fai_log_dir);
901 }
903 return;
904 }
907 sub save_fai_log {
908 my ($fai_log_dir) = @_ ;
909 my $FAI_DIR;
910 my $fai_action;
912 # Directory for log files after a softupdate
913 my $log_dir = File::Spec->catdir($fai_log_dir, "localhost/last");
915 if (not -d $log_dir) {
916 # Directory for log files after a new installation
917 $log_dir = "/tmp/fai";
918 if (not -d $log_dir) {
919 daemon_log("ERROR: cannot open directory $log_dir", 1);
920 return;
921 }
922 $fai_action = "install";
923 }
924 else {
925 # If we already have a logdir, we can assume that this is a softupdate
926 $fai_action = "softupdate";
927 }
929 opendir($FAI_DIR, "$log_dir");
930 my @log_files = readdir($FAI_DIR);
931 closedir($FAI_DIR);
933 my @log_list;
934 foreach my $log_file (@log_files) {
935 if( $log_file eq "." || $log_file eq ".." ) { next; }
937 my $log = "log_file:$log_file:";
938 $log_file = File::Spec->catfile( $log_dir, $log_file );
940 if (not -f $log_file) {
941 daemon_log("ERROR: cannot read $log_file", 1);
942 next;
943 }
945 open(FILE, "<$log_file");
946 my @lines = <FILE> ;
947 close (FILE);
948 my $log_string = join("", @lines);
949 $log .= &encode_base64($log_string);
950 push(@log_list, $log);
951 }
953 my $all_log_string = join("\n", @log_list);
954 my $msg_hash = &create_xml_hash("CLMSG_save_fai_log", $client_address, $server_address, $all_log_string);
955 &add_content2xml_hash($msg_hash, "macaddress", $client_mac_address);
956 &add_content2xml_hash($msg_hash, "fai_action", $fai_action);
957 my $msg = &create_xml_string($msg_hash);
958 &send_msg_to_target($msg, $server_address, $server_key, "CLMSG_save_fai_log");
960 }
963 sub sig_handler {
964 my ($kernel, $signal) = @_[KERNEL, ARG0] ;
965 daemon_log("0 INFO got signal '$signal'", 1);
966 $kernel->sig_handled();
967 return;
968 }
971 sub _start {
972 my ($kernel, $heap) = @_[KERNEL, HEAP];
973 $kernel->alias_set('client_session');
974 $global_kernel = $kernel; # this is used to throw events at each point of the skript
976 $kernel->sig(USR1 => "sig_handler");
978 # force a registration at a gosa-si-server
979 $kernel->yield('register_at_gosa_si_server');
981 # install all file watcher defined
982 while( my($name, $file) = each %files_to_watch ) {
983 my $watcher = POE::Wheel::FollowTail->new(
984 Filename => $file,
985 InputEvent => $name."_record",
986 # ResetEvent => "file_reset",
987 ErrorEvent => "file_error",
988 );
989 # $heap->{tail} = POE::Wheel::Run->new(
990 # Program => [ "/usr/bin/tail", "-f", $file ],
991 # StdoutEvent => $file_name."_record",
992 # );
993 $heap->{services}->{ $watcher->ID } = $name;
994 $heap->{watchers}->{ $watcher->ID } = $watcher;
995 }
996 $kernel->yield('trigger_logged_in_users_report');
997 $kernel->yield('trigger_seen_messages');
998 }
1001 sub _default {
1002 daemon_log("ERROR: can not handle incoming msg with header '$_[ARG0]'", 1);
1003 return;
1004 }
1007 sub server_input {
1008 my ($kernel, $heap, $input, $wheel) = @_[KERNEL, HEAP, ARG0, ARG1];
1009 my $remote_ip = $heap->{'remote_ip'},
1010 my $error = 0;
1011 my $answer;
1014 daemon_log("INFO: Incoming msg from '$remote_ip'", 5);
1015 daemon_log("DEBUG: Incoming msg:\n$input\n", 9);
1017 my ($msg, $msg_hash) = &check_key_and_xml_validity($input, $server_key);
1018 if( (!$msg) || (!$msg_hash) ) {
1019 daemon_log("WARNING: Deciphering of incoming msg failed", 3);
1020 if($server_address =~ /$remote_ip/) {
1021 # got a msg from gosa-si-server which can not be decrypted, may the secrete not up-to-date
1022 # cause a reregistering with a new secrete handshake
1023 daemon_log("WARNING: Message from gosa-si-server could not be understood, cause reregistering at server", 3);
1025 # if client is alread in a registration process, that means not registered, do nothing
1026 # if not, cause re-registration
1027 if (not $REGISTERED) {
1028 &daemon_log("WARNING: gosa-si-client is already in a registration process so ignore this message", 3);
1029 } else {
1030 $REGISTERED = 0;
1031 $kernel->post('client_session', 'register_at_gosa_si_server');
1032 }
1033 }
1034 $error++;
1035 }
1038 ######################
1039 # process incoming msg
1040 if( $error == 0 ) {
1041 my $header = @{$msg_hash->{header}}[0];
1042 my $source = @{$msg_hash->{source}}[0];
1044 if( exists $event_hash->{$header} ) {
1046 # a event exists with the header as name
1047 daemon_log("INFO: found event '$header' at event-module '".$event_hash->{$header}."'", 5);
1048 no strict 'refs';
1049 $answer = &{$event_hash->{$header}."::$header"}($msg, $msg_hash);
1050 }
1051 else {
1052 daemon_log("WARNING: no event '$header' found in event modules under $event_dir", 3);
1053 }
1054 }
1056 ########
1057 # answer
1058 if( $answer ) {
1060 #check gosa-si envelope validity
1061 my $answer_hash = &check_outgoing_xml_validity($answer);
1063 if( $answer_hash ) {
1064 # answer is valid
1066 # preprocessing
1067 if( $answer =~ "<header>registered</header>") {
1068 # set registered flag to true to stop sending further registered msgs
1069 $REGISTERED = 1;
1070 }
1071 else {
1072 $answer =~ /<header>(\S+)<\/header>/;
1073 &send_msg_to_target($answer, $server_address, $server_key, $1);
1074 }
1076 # postprocessing
1077 if( $answer =~ "<header>new_key</header>") {
1078 # set new key to global variable
1079 $answer =~ /<new_key>(\S*?)<\/new_key>/;
1080 my $new_key = $1;
1081 $server_key = $new_key;
1082 }
1083 }
1085 }
1087 return;
1088 }
1091 #==== MAIN = main ==============================================================
1092 # parse commandline options
1093 Getopt::Long::Configure( "bundling" );
1094 GetOptions("h|help" => \&usage,
1095 "c|config=s" => \$cfg_file,
1096 "f|foreground" => \$foreground,
1097 "v|verbose+" => \$verbose,
1098 );
1100 # read and set config parameters
1101 &check_cmdline_param ;
1102 &read_configfile($cfg_file, %cfg_defaults);
1103 &check_pid;
1106 # forward error messages to logfile
1107 if ( ! $foreground ) {
1108 open( STDIN, '+>/dev/null' );
1109 open( STDOUT, '+>&STDIN' );
1110 open( STDERR, '+>&STDIN' );
1111 }
1113 # Just fork, if we are not in foreground mode
1114 if( ! $foreground ) {
1115 chdir '/' or die "Can't chdir to /: $!";
1116 $pid = fork;
1117 setsid or die "Can't start a new session: $!";
1118 umask 0;
1119 } else {
1120 $pid = $$;
1121 }
1123 # Do something useful - put our PID into the pid_file
1124 if( 0 != $pid ) {
1125 open( LOCK_FILE, ">$pid_file" );
1126 print LOCK_FILE "$pid\n";
1127 close( LOCK_FILE );
1128 if( !$foreground ) {
1129 exit( 0 )
1130 };
1131 }
1133 # parse head url and revision from svn
1134 my $client_status_hash = { 'developmental'=>'revision', 'stable'=>'release'};
1135 $client_version =~ /^\$HeadURL: (\S+) \$:\$Rev: (\d+) \$$/;
1136 $client_headURL = defined $1 ? $1 : 'unknown' ;
1137 $client_revision = defined $2 ? $2 : 'unknown' ;
1138 if ($client_headURL =~ /\/tag\// ||
1139 $client_headURL =~ /\/branches\// ) {
1140 $client_status = "stable";
1141 } else {
1142 $client_status = "developmental" ;
1143 }
1145 # Determine root uid and adm gid, used for creating log files
1146 $root_uid = getpwnam('root');
1147 $adm_gid = getgrnam('adm');
1148 if(not defined $adm_gid){
1149 $adm_gid = getgrnam('root');
1150 }
1153 daemon_log(" ", 1);
1154 daemon_log("$prg started!", 1);
1155 daemon_log("INFO: status: $client_status", 1);
1156 daemon_log("INFO: ".$client_status_hash->{$client_status}.": $client_revision", 1);
1158 # delete old DBsqlite lock files
1159 system('rm -f /tmp/gosa_si_lock*gosa-si-client*');
1161 # detect ip and mac address and complete host address
1162 $client_address = $client_ip.":".$client_port;
1163 my $network_interface= &get_interface_for_ip($client_ip);
1164 $client_mac_address= &get_mac($network_interface);
1165 daemon_log("INFO: ip address detected: $client_ip", 1);
1166 daemon_log("INFO: gosa-si-client mac address detected: $client_mac_address", 1);
1169 # import events
1170 my ($error, $result, $tmp_hash) = &import_events($event_dir);
1171 while (my ($module, $mod_event_hash) = each %$tmp_hash) {
1172 while (my ($event_name, $nothing) = each %$mod_event_hash) {
1173 $event_hash->{$event_name} = $module;
1174 }
1175 }
1177 foreach my $log_line (@$result) {
1178 if ($log_line =~ / succeed: /) {
1179 &main::daemon_log("0 DEBUG: $log_line", 7);
1180 } else {
1181 &main::daemon_log("0 ERROR: $log_line", 1);
1182 }
1183 }
1186 # compute hardware checksum
1187 $gotoHardwareChecksum= &generate_hw_digest();
1188 daemon_log("INFO: gotoHardwareChecksum detected: $gotoHardwareChecksum", 1);
1191 # create socket for incoming xml messages
1192 POE::Component::Server::TCP->new(
1193 Alias => 'gosa-si-client',
1194 Port => $client_port,
1195 ClientInput => \&server_input,
1196 );
1197 daemon_log("INFO: start socket for incoming xml messages at port '$client_port' ", 1);
1200 # prepare variables
1201 if( inet_aton($server_ip) ){ $server_ip = inet_ntoa(inet_aton($server_ip)); }
1202 if (defined $server_ip && defined $server_port) {
1203 $server_address = $server_ip.":".$server_port;
1204 }
1205 $xml = new XML::Simple();
1206 $default_server_key = $server_key;
1209 # add gosa-si-server address from config file at first position of server list
1210 my $server_check_cfg = Config::IniFiles->new( -file => $cfg_file );
1211 my $server_check = (defined($server_check_cfg))?$server_check_cfg->val( "server", "ip"):undef;
1212 if( defined $server_check ) {
1213 unshift(@servers, $server_address);
1214 my $servers_string = join(", ", @servers);
1215 daemon_log("INFO: found servers in configuration file: $servers_string", 1);
1216 } else {
1217 my @tmp_servers;
1218 if ( !$server_domain) {
1219 # Try our DNS Searchlist
1220 my @domain_list = &get_dns_domains();
1221 my $tmp_domains;
1222 my $error_string;
1223 for my $domain (@domain_list) {
1224 chomp($domain);
1225 ($tmp_domains, $error_string) = &get_server_addresses($domain);
1226 if(@$tmp_domains) {
1227 for my $tmp_server(@$tmp_domains) {
1228 push @tmp_servers, $tmp_server;
1229 }
1230 }
1231 }
1232 if (0 == @tmp_servers) {
1233 my $log_string = "no gosa-si-server found!";
1234 $log_string .= "\n\tdetermined domains out of /etc/resolv.conf: ".join(", ", @domain_list) if (@domain_list);
1235 $log_string .= "\n\tdetermined server addresses in domains: ".join(", ",@$tmp_domains) if (defined($tmp_domains));
1236 daemon_log("ERROR: $log_string", 1) if (defined($log_string));
1237 daemon_log("ERROR: $error_string", 1) if (defined($error_string));
1238 daemon_log("ERROR: please specify a gosa-si-server address or a domain in config file", 1);
1239 kill 2, $$;
1240 }
1241 } else {
1242 @tmp_servers = &get_server_addresses($server_domain);
1243 if( 0 == @tmp_servers ) {
1244 daemon_log("ERROR: no gosa-si-server found in DNS for domain '$server_domain'",1);
1245 daemon_log("ERROR: please specify a gosa-si-server address or a domain in config file", 1);
1246 kill 2, $$;
1247 }
1248 }
1250 foreach my $server (@tmp_servers) {
1251 unshift(@servers, $server);
1252 }
1253 my $servers_string = join(", ", @servers);
1254 daemon_log("INFO: found servers in DNS: $servers_string", 1);
1255 }
1258 # open fifo for non-gosa-si-client-msgs to gosa-si-server
1259 POSIX::mkfifo("$gosa_si_client_fifo", "0600");
1262 POE::Session->create(
1263 inline_states => {
1264 _start => \&_start,
1265 _default => \&_default,
1266 sig_handler => \&sig_handler,
1267 register_at_gosa_si_server => \®ister_at_gosa_si_server,
1269 # trigger periodical tasks
1270 trigger_new_key => \&trigger_new_key,
1271 trigger_logged_in_users_report => \&trigger_logged_in_users_report,
1272 trigger_seen_messages => \&trigger_seen_messages,
1274 # handle records from each defined file differently
1275 fifo_record => \&fifo_got_record,
1277 # handle file resets and errors the same way for each file
1278 file_reset => \&generic_file_reset,
1279 file_error => \&generic_file_error,
1280 }
1281 );
1283 POE::Kernel->run();
1284 exit;