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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 my $servers_string;
64 $verbose= 1;
66 # globalise variables which are used in imported events
67 our $global_kernel;
68 our $cfg_file;
69 our $opts_file;
70 our $server_address;
71 our $client_address;
72 our $client_ip;
73 our $client_mac_address;
74 our $client_dnsname;
75 our $client_force_hostname;
76 our $server_key;
77 our $opts_dnslookup;
79 # default variables
80 our $REGISTERED = 0;
81 our $REGISTRATION_IN_PROGRESS = 0;
82 our $REGISTRATION_TRIES = 0;
83 our $FAILED_CRYPTO = 0;
85 # path to fifo for non-gosa-si-client messages to gosa-si-server
86 $gosa_si_client_fifo = "/var/run/gosa-si-client.socket";
87 %files_to_watch = (fifo => $gosa_si_client_fifo);
89 # in function register_at_gosa_si_server, after which period of seconds a new registration should be tried if a registration was
90 # not successful until now
91 my $delay_set_time = 10;
92 our $prg= basename($0);
94 # Threshold for the max number of wrong crypted packages, when triggered
95 # a new server is choosen
96 my $max_failed_crypto_messages = 5;
98 # all n seconds the client reports logged_in users to gosa-si-server
99 my $trigger_logged_in_users_report_delay = 600;
101 # all n seconds the client reports messages seen by user
102 my $trigger_seen_messages_delay = 30;
104 # directory where all log files from installation are stored
105 my $fai_log_dir = "/var/log/fai";
107 %cfg_defaults = (
108 "general" =>
109 {"log-file" => [\$log_file, "/var/run/".$prg.".log"],
110 "pid-file" => [\$pid_file, "/var/run/".$prg.".pid"],
111 "opts-file" => [\$opts_file, "/var/run/".$prg.".opts"],
112 },
113 "client" =>
114 {"port" => [\$client_port, "20083"],
115 "ip" => [\$client_ip, "0.0.0.0"],
116 "mac-address" => [\$client_mac_address, "00:00:00:00:00:00"],
117 "server-domain" => [\$server_domain, ""],
118 "ldap" => [\$ldap_enabled, 1],
119 "ldap-config" => [\$ldap_config, "/etc/ldap/ldap.conf"],
120 "pam-config" => [\$pam_config, "/etc/pam_ldap.conf"],
121 "nss-config" => [\$nss_config, "/etc/libnss-ldap.conf"],
122 "fai-logpath" => [\$fai_logpath, "/var/log/fai/fai.log"],
123 "force-hostname" => [\$client_force_hostname, "false"],
124 },
125 "server" => {
126 "ip" => [\$servers_string, "127.0.0.1"],
127 "port" => [\$server_port, "20081"],
128 "key" => [\$server_key, ""],
129 "timeout" => [\$server_timeout, 10],
130 "key-lifetime" => [\$server_key_lifetime, 600],
131 "dns-lookup" => [\$opts_dnslookup, "true"],
132 },
134 );
137 #=== FUNCTIONS = functions =====================================================
139 sub usage {
140 print STDERR << "EOF" ;
141 usage: $prg [-hvf] [-c config]
143 -h : this (help) message
144 -c <file> : config file
145 -f : foreground, process will not be forked to background
146 -v : be verbose (multiple to increase verbosity)
148 EOF
149 print "\n" ;
150 }
152 #=== FUNCTION ================================================================
153 # NAME: check_cmdline_param
154 # PARAMETERS:
155 # RETURNS:
156 # DESCRIPTION:
157 #===============================================================================
158 sub check_cmdline_param () {
159 my $err_config;
160 my $err_counter = 0;
161 if(not defined($cfg_file)) {
162 $cfg_file = "/etc/gosa-si/client.conf";
163 if(! -r $cfg_file) {
164 $err_config = "please specify a config file";
165 $err_counter += 1;
166 }
167 }
168 if( $err_counter > 0 ) {
169 &usage( "", 1 );
170 if( defined( $err_config)) { print STDERR "$err_config\n"}
171 print STDERR "\n";
172 exit( -1 );
173 }
174 }
176 #=== FUNCTION ================================================================
177 # NAME: check_pid
178 # PARAMETERS:
179 # RETURNS:
180 # DESCRIPTION:
181 #===============================================================================
182 sub check_pid {
183 $pid = -1;
184 # Check, if we are already running
185 if( open(LOCK_FILE, "<$pid_file") ) {
186 $pid = <LOCK_FILE>;
187 if( defined $pid ) {
188 chomp( $pid );
189 if( -f "/proc/$pid/stat" ) {
190 my($stat) = `cat /proc/$pid/stat` =~ m/$pid \((.+)\).*/;
191 if( $0 eq $stat ) {
192 close( LOCK_FILE );
193 exit -1;
194 }
195 }
196 }
197 close( LOCK_FILE );
198 unlink( $pid_file );
199 }
201 # create a syslog msg if it is not to possible to open PID file
202 if (not sysopen(LOCK_FILE, $pid_file, O_WRONLY|O_CREAT|O_EXCL, 0644)) {
203 my($msg) = "Couldn't obtain lockfile '$pid_file' ";
204 if (open(LOCK_FILE, '<', $pid_file)
205 && ($pid = <LOCK_FILE>))
206 {
207 chomp($pid);
208 $msg .= "(PID $pid)\n";
209 } else {
210 $msg .= "(unable to read PID)\n";
211 }
212 if( ! ($foreground) ) {
213 openlog( $0, "cons,pid", "daemon" );
214 syslog( "warning", $msg );
215 closelog();
216 }
217 else {
218 print( STDERR " $msg " );
219 }
220 exit( -1 );
221 }
222 }
225 sub sig_int_handler {
226 my ($signal) = @_;
228 daemon_log("shutting down gosa-si-client", 1);
229 system("kill `ps -C gosa-si-client -o pid=`");
230 }
231 $SIG{INT} = \&sig_int_handler;
234 #=== FUNCTION ================================================================
235 # NAME: logging
236 # PARAMETERS: level - string - default 'info'
237 # msg - string -
238 # facility - string - default 'LOG_DAEMON'
239 # RETURNS:
240 # DESCRIPTION:
241 #===============================================================================
242 sub daemon_log {
243 # log into log_file
244 my( $msg, $level ) = @_;
245 if(not defined $msg) { return }
246 if(not defined $level) { $level = 1 }
247 if(defined $log_file){
248 my $open_log_fh = sysopen(LOG_HANDLE, $log_file, O_WRONLY | O_CREAT | O_APPEND , 0440);
249 if(not $open_log_fh) {
250 print STDERR "cannot open $log_file: $!";
251 return;
252 }
253 # check owner and group of log_file and update settings if necessary
254 my ($dev, $ino, $mode, $nlink, $uid, $gid, $rdev, $size, $atime, $mtime, $ctime, $blksize, $blocks) = stat($log_file);
255 if((not $uid eq $root_uid) || (not $gid eq $adm_gid)) {
256 chown($root_uid, $adm_gid, $log_file);
257 }
259 chomp($msg);
260 if($level <= $verbose){
261 my ($seconds, $minutes, $hours, $monthday, $month,
262 $year, $weekday, $yearday, $sommertime) = localtime(time);
263 $hours = $hours < 10 ? $hours = "0".$hours : $hours;
264 $minutes = $minutes < 10 ? $minutes = "0".$minutes : $minutes;
265 $seconds = $seconds < 10 ? $seconds = "0".$seconds : $seconds;
266 my @monthnames = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
267 $month = $monthnames[$month];
268 $monthday = $monthday < 10 ? $monthday = "0".$monthday : $monthday;
269 $year+=1900;
271 my $log_msg = "$month $monthday $hours:$minutes:$seconds $prg $msg\n";
272 print LOG_HANDLE $log_msg;
273 if( $foreground ) {
274 print STDERR $log_msg;
275 }
276 }
277 close( LOG_HANDLE );
278 }
279 }
282 #=== FUNCTION ================================================================
283 # NAME: get_mac
284 # PARAMETERS: interface name (i.e. eth0)
285 # RETURNS: (mac address)
286 # DESCRIPTION: Uses ioctl to get mac address directly from system.
287 #===============================================================================
288 sub get_mac {
289 my $ifreq= shift;
290 my $result;
291 if ($ifreq && length($ifreq) > 0) {
292 if($ifreq eq "all") {
293 if(defined($server_ip)) {
294 $result = &get_local_mac_for_remote_ip($server_ip);
295 }
296 elsif ($client_mac_address && length($client_mac_address) > 0 && !($client_mac_address eq "00:00:00:00:00:00")){
297 $result = &client_mac_address;
298 }
299 else {
300 $result = "00:00:00:00:00:00";
301 }
302 } else {
303 my $SIOCGIFHWADDR= 0x8927; # man 2 ioctl_list
305 # A configured MAC Address should always override a guessed value
306 if ($client_mac_address and length($client_mac_address) > 0 and not($client_mac_address eq "00:00:00:00:00:00")) {
307 $result= $client_mac_address;
308 }
309 else {
310 socket SOCKET, PF_INET, SOCK_DGRAM, getprotobyname('ip')
311 or die "socket: $!";
313 if(ioctl SOCKET, $SIOCGIFHWADDR, $ifreq) {
314 my ($if, $mac)= unpack 'h36 H12', $ifreq;
316 if (length($mac) > 0) {
317 $mac=~ m/^([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])$/;
318 $mac= sprintf("%s:%s:%s:%s:%s:%s", $1, $2, $3, $4, $5, $6);
319 $result = $mac;
320 }
321 }
322 }
323 }
324 }
325 return $result;
326 }
329 #=== FUNCTION ================================================================
330 # NAME: get_local_mac_for_remote_ip
331 # PARAMETERS: none (takes server_ip from global variable)
332 # RETURNS: (ip address from interface that is used for communication)
333 # DESCRIPTION: Uses ioctl to get routing table from system, checks which entry
334 # matches (defaultroute last).
335 #===============================================================================
336 sub get_local_mac_for_remote_ip {
337 my $server_ip= shift;
338 my $result= "00:00:00:00:00:00";
340 if($server_ip =~ /^[a-z][a-z0-9\.]$/i) {
341 my $ip_address = inet_ntoa(scalar gethostbyname($server_ip));
342 if(defined($ip_address) && $ip_address =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}/) {
343 # Write ip address to $server_ip variable
344 $server_ip = $ip_address;
345 }
346 }
348 if($server_ip =~ /^(\d\d?\d?\.){3}\d\d?\d?$/) {
349 my $PROC_NET_ROUTE= ('/proc/net/route');
351 open(PROC_NET_ROUTE, "<$PROC_NET_ROUTE")
352 or die "Could not open $PROC_NET_ROUTE";
354 my @ifs = <PROC_NET_ROUTE>;
356 close(PROC_NET_ROUTE);
358 # Eat header line
359 shift @ifs;
360 chomp @ifs;
361 foreach my $line(@ifs) {
362 my ($Iface,$Destination,$Gateway,$Flags,$RefCnt,$Use,$Metric,$Mask,$MTU,$Window,$IRTT)=split(/\s/, $line);
363 my $destination;
364 my $mask;
365 my ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Destination);
366 $destination= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
367 ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Mask);
368 $mask= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
369 if(new NetAddr::IP($server_ip)->within(new NetAddr::IP($destination, $mask))) {
370 # destination matches route, save mac and exit
371 $result= &get_mac($Iface);
372 last;
373 }
374 }
375 } else {
376 daemon_log("get_local_mac_for_remote_ip was called with a non-ip parameter: $server_ip", 1);
377 }
378 return $result;
379 }
382 sub generate_hw_digest {
383 my $hw_data;
384 foreach my $line (split /\n/, `cat /proc/bus/pci/devices`) {
385 $hw_data.= sprintf "%s", $line =~ /[^\s]+\s([^\s]+)\s.*/;
386 }
387 return(md5_base64($hw_data));
388 }
391 sub create_ciphering {
392 my ($passwd) = @_;
393 if((!defined($passwd)) || length($passwd)==0) {
394 $passwd = "";
395 }
396 $passwd = substr(md5_hex("$passwd") x 32, 0, 32);
397 my $iv = substr(md5_hex('GONICUS GmbH'),0, 16);
398 my $my_cipher = Crypt::Rijndael->new($passwd , Crypt::Rijndael::MODE_CBC());
399 $my_cipher->set_iv($iv);
400 return $my_cipher;
401 }
404 sub encrypt_msg {
405 my ($msg, $key) = @_;
406 my $my_cipher = &create_ciphering($key);
407 my $len;
408 {
409 use bytes;
410 $len= 16-length($msg)%16;
411 }
412 $msg = "\0"x($len).$msg;
413 $msg = $my_cipher->encrypt($msg);
414 chomp($msg = &encode_base64($msg));
415 # there are no newlines allowed inside msg
416 $msg=~ s/\n//g;
417 return $msg;
418 }
421 sub decrypt_msg {
423 my ($msg, $key) = @_ ;
424 $msg = &decode_base64($msg);
425 my $my_cipher = &create_ciphering($key);
426 $msg = $my_cipher->decrypt($msg);
427 $msg =~ s/\0*//g;
428 return $msg;
429 }
432 #=== FUNCTION ================================================================
433 # NAME: send_msg_hash_to_target
434 # PARAMETERS: msg_hash - hash - xml_hash created with function create_xml_hash
435 # PeerAddr string - socket address to send msg
436 # PeerPort string - socket port, if not included in socket address
437 # RETURNS: nothing
438 # DESCRIPTION: ????
439 #===============================================================================
440 sub send_msg_hash_to_target {
441 my ($msg_hash, $address, $encrypt_key) = @_ ;
442 my $msg = &create_xml_string($msg_hash);
443 my $header = @{$msg_hash->{'header'}}[0];
444 my $error = &send_msg_to_target($msg, $address, $encrypt_key, $header);
446 return $error;
447 }
450 sub send_msg_to_target {
451 my ($msg, $address, $encrypt_key, $msg_header) = @_ ;
452 my $error = 0;
454 if( $msg_header ) { $msg_header = "'$msg_header'-"; }
455 else { $msg_header = ""; }
457 # Memorize own source address
458 $msg =~ /<source>(\S+)<\/source>/;
459 my $own_source_address = $1;
461 # encrypt xml msg
462 my $crypted_msg = &encrypt_msg($msg, $encrypt_key);
464 # opensocket
465 my $socket = &open_socket($address);
466 if( !$socket ) {
467 daemon_log("WARNING: cannot send ".$msg_header."msg to $address , host not reachable", 3);
468 if ($REGISTERED == 1) {
469 $REGISTERED = 0; # if server is not available, cause reregistering
470 daemon_log("INFO: cause reregistering at gosa-si-server", 5);
471 $global_kernel->post('client_session', 'register_at_gosa_si_server');
473 }
474 $error++;
475 }
477 # send xml msg
478 if( $error == 0 ) {
479 print $socket $crypted_msg.";$own_source_address\n";
480 daemon_log("INFO: send ".$msg_header."msg to $address", 5);
481 daemon_log("DEBUG: message:\n$msg", 9);
482 }
484 # close socket in any case
485 if( $socket ) {
486 close $socket;
487 }
489 return $error;
490 }
493 sub write_to_file {
494 my ($string, $file) = @_;
495 my $error = 0;
497 if( not defined $file || not -f $file ) {
498 &main::daemon_log("ERROR: $prg: check '-f file' failed: $file", 1);
499 $error++;
500 }
501 if( not defined $string || 0 == length($string)) {
502 &main::daemon_log("ERROR: $prg: empty string to write to file '$file'", 1);
503 $error++;
504 }
506 if( $error == 0 ) {
508 chomp($string);
510 if (open(FILE, ">> $file")){
511 print FILE $string."\n";
512 close(FILE);
513 }
514 }
516 return;
517 }
520 sub open_socket {
521 my ($PeerAddr, $PeerPort) = @_ ;
522 if(defined($PeerPort)){
523 $PeerAddr = $PeerAddr.":".$PeerPort;
524 }
525 my $socket;
526 $socket = new IO::Socket::INET(PeerAddr => $PeerAddr,
527 Porto => "tcp",
528 Type => SOCK_STREAM,
529 Timeout => 5,
530 );
531 if(not defined $socket) {
532 return;
533 }
534 &daemon_log("DEBUG: open_socket: $PeerAddr", 7);
535 return $socket;
536 }
539 #=== FUNCTION ================================================================
540 # NAME: register_at_server
541 # PARAMETERS:
542 # RETURNS:
543 # DESCRIPTION:
544 #===============================================================================
545 sub register_at_gosa_si_server {
546 my ($kernel) = $_[KERNEL];
548 # if client is already registered, stop registration process
549 if ($REGISTERED) {
550 $kernel->delay('register_at_gosa_si_server');
552 # client is not registered, start registration process
553 } else {
554 $REGISTRATION_IN_PROGRESS = 1;
556 # clear all other triggered events and wait till registration was successful
557 $kernel->delay('trigger_new_key');
559 # create new passwd and ciphering object for client-server communication
560 $server_key = &create_passwd();
562 my $events = join( ",", keys %{$event_hash} );
563 while(1) {
564 $REGISTRATION_TRIES++;
566 # fetch first gosa-si-server from @servers
567 # append shifted gosa-si-server at the end of @servers, so looking for servers never stop if
568 # a registration never occured
569 my $server = shift(@servers);
570 push(@servers, $server);
571 ($server_ip = $server) =~ s/:.*$//;
572 $server_address = $server;
574 # Check if our ip is resolvable - if not: don't try to register
575 if(!(defined($server) && $server =~ m/^[0-9\.]*?:.*$/)) {
576 &main::daemon_log("ERROR: Server with address '".defined($server)?$server:""."' is invalid!", 1);
577 if (scalar(@servers) == 1) {
578 &main::daemon_log("ERROR: No valid servers found!", 1);
579 exit(1);
580 }
581 }
583 # Check if our ip is resolvable - if not: don't try to register
584 my $ip= &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
585 my $dnsname= gethostbyaddr(inet_aton($ip), AF_INET);
586 if(!defined($dnsname)) {
587 if( defined($client_force_hostname) && $client_force_hostname eq "true") {
588 $dnsname = `hostname`;
589 } else {
590 &write_to_file("goto-error-dns:$ip", $fai_logpath);
591 &main::daemon_log("ERROR: ip is not resolvable, no registration possible. Write 'goto-error-dns:$ip' to $fai_logpath", 1);
592 exit(1);
593 }
594 }
596 # create registration msg
597 my $local_ip = &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
598 my $local_mac = &get_local_mac_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
599 my $register_hash = &create_xml_hash("here_i_am", $local_ip.":".$client_port, $server);
600 &add_content2xml_hash($register_hash, "new_passwd", $server_key);
601 &add_content2xml_hash($register_hash, "mac_address", $local_mac);
602 &add_content2xml_hash($register_hash, "events", $events);
603 &add_content2xml_hash($register_hash, "client_status", $client_status);
604 &add_content2xml_hash($register_hash, "client_revision", $client_revision);
605 &add_content2xml_hash($register_hash, "gotoHardwareChecksum", $gotoHardwareChecksum);
606 &add_content2xml_hash($register_hash, "key_lifetime", $server_key_lifetime);
608 # Add $HOSTNAME from ENV if force-hostname is set
609 if( defined($client_force_hostname) && $client_force_hostname eq "true") {
610 if(defined($ENV{HOSTNAME}) && length($ENV{HOSTNAME}) >0 ) {
611 &add_content2xml_hash($register_hash, "force-hostname", $ENV{HOSTNAME});
612 } else {
613 &main::daemon_log("force-hostname was set to true, but no \$HOSTNAME was found in Environment!",0);
614 }
615 }
617 # send xml hash to server with general server passwd
618 my $res = &send_msg_hash_to_target($register_hash, $server, $default_server_key);
620 # if delivery of registration msg succeed
621 if(defined($res) and $res eq "0") {
622 # reset try_to_register
623 $REGISTRATION_TRIES = 0;
625 # Set fixed client address and mac address
626 $client_ip= &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
627 $client_address= "$client_ip:$client_port";
628 $client_mac_address = $local_mac;
629 $client_dnsname = $dnsname;
630 last;
632 # delivery of registration msg failed
633 } else {
634 # wait 1 sec until trying to register again
635 sleep(1);
636 next;
637 }
639 } # end of while
640 # one circle through all servers finished and no registration succeed
641 if ( $REGISTRATION_TRIES >= (scalar(@servers)) ) {
642 &write_to_file("gosa-si-no-server-available", $fai_logpath);
643 $kernel->delay_set('register_at_gosa_si_server', $delay_set_time);
645 # delivery of registraion msg succeed, waiting for server response
646 } else {
647 daemon_log("INFO: waiting for msg 'register_at_gosa_si_server'",5);
648 $kernel->delay_set('register_at_gosa_si_server', $delay_set_time);
649 # clear old settings and set it again
650 $kernel->delay('trigger_new_key');
651 $kernel->delay_set('trigger_new_key', $server_key_lifetime);
652 }
654 }
655 return;
656 }
659 sub check_key_and_xml_validity {
660 my ($crypted_msg, $module_key) = @_;
662 my $msg;
663 my $msg_hash;
664 eval{
665 $msg = &decrypt_msg($crypted_msg, $module_key);
666 &main::daemon_log("decrypted_msg: \n$msg", 9);
668 $msg_hash = $xml->XMLin($msg, ForceArray=>1);
670 ##############
671 # check header
672 my $header_l = $msg_hash->{'header'};
673 if( 1 != @{$header_l} ) {
674 die 'no or more headers specified';
675 }
676 my $header = @{$header_l}[0];
677 if( 0 == length $header) {
678 die 'header has length 0';
679 }
681 ##############
682 # check source
683 my $source_l = $msg_hash->{'source'};
684 if( 1 != @{$source_l} ) {
685 die 'no or more than 1 sources specified';
686 }
687 my $source = @{$source_l}[0];
688 if( 0 == length $source) {
689 die 'source has length 0';
690 }
691 unless( $source =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ) {
692 die "source '$source' is neither a complete ip-address with port nor 'GOSA'";
693 }
695 ##############
696 # check target
697 my $target_l = $msg_hash->{'target'};
698 if( 1 != @{$target_l} ) {
699 die 'no or more than 1 targets specified ';
700 }
701 my $target = @{$target_l}[0];
702 if( 0 == length $target) {
703 die 'target has length 0 ';
704 }
705 unless( $target =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ){
706 die "source is neither a complete ip-address with port nor 'GOSA'";
707 }
708 };
709 if($@) {
710 &main::daemon_log("WARNING: do not understand the message or msg is not gosa-si envelope conform:", 5);
711 &main::daemon_log("$@", 8);
712 $msg = undef;
713 $msg_hash = undef;
714 }
716 return ($msg, $msg_hash);
717 }
720 sub check_outgoing_xml_validity {
721 my ($msg) = @_;
723 my $msg_hash;
724 eval{
725 $msg_hash = $xml->XMLin($msg, ForceArray=>1);
727 ##############
728 # check header
729 my $header_l = $msg_hash->{'header'};
730 if( 1 != @{$header_l} ) {
731 die 'no or more than one headers specified';
732 }
733 my $header = @{$header_l}[0];
734 if( 0 == length $header) {
735 die 'header has length 0';
736 }
738 ##############
739 # check source
740 my $source_l = $msg_hash->{'source'};
741 if( 1 != @{$source_l} ) {
742 die 'no or more than 1 sources specified';
743 }
744 my $source = @{$source_l}[0];
745 if( 0 == length $source) {
746 die 'source has length 0';
747 }
748 unless( $source =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ||
749 $source =~ /^GOSA$/i ) {
750 die "source '$source' is neither a complete ip-address with port";
751 }
753 ##############
754 # check target
755 my $target_l = $msg_hash->{'target'};
756 if( 1 != @{$target_l} ) {
757 die "no or more than one targets specified";
758 }
759 foreach my $target (@$target_l) {
760 if( 0 == length $target) {
761 die "target has length 0";
762 }
763 unless( $target =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ) {
764 die "target '$target' is not a complete ip-address with port or a valid target name";
765 }
766 }
767 };
768 if($@) {
769 daemon_log("WARNING: outgoing msg is not gosa-si envelope conform", 5);
770 daemon_log("$@ $msg", 8);
771 $msg_hash = undef;
772 }
773 return ($msg_hash);
774 }
777 sub trigger_new_key {
778 my ($kernel) = $_[KERNEL] ;
780 my $msg = "<xml><header>new_key</header><source>$client_address</source><target>$client_address</target></xml>";
781 &send_msg_to_target($msg, $client_address, $server_key, 'new_key');
783 $kernel->delay_set('trigger_new_key', $server_key_lifetime);
784 }
787 sub trigger_logged_in_users_report {
788 my ($kernel) = $_[KERNEL] ;
790 # just do if client is registered already
791 if( $REGISTERED ) {
792 my $result = qx(/usr/bin/users);
793 my @logged_in_user_list;
794 if( defined $result ) {
795 chomp($result);
796 @logged_in_user_list = split(/\s/, $result);
797 }
799 system("echo 'CURRENTLY_LOGGED_IN ".join(" ", @logged_in_user_list)."' > /var/run/gosa-si-client.socket");
800 $kernel->delay_set('trigger_logged_in_users_report', $trigger_logged_in_users_report_delay);
801 } else {
802 # try it in 10 sec again
803 $kernel->delay_set('trigger_logged_in_users_report', 10);
804 }
805 }
808 sub trigger_seen_messages {
809 my ($kernel) = $_[KERNEL] ;
811 # Select all files under /tmp with prefix 'goto_notify'
812 my $goto_dir = "/tmp";
813 opendir(DIR, $goto_dir);
814 my @goto_files = grep { /.goto_notify$/ && -f "$goto_dir/$_" } readdir(DIR);
815 closedir DIR;
817 # Check if file has 'seen' tag
818 foreach my $goto_file (@goto_files) {
819 open(FILE, "$goto_dir/$goto_file");
820 my @lines = <FILE>;
821 close FILE;
823 my $source;
824 my $target;
825 my $usr;
826 my $subject;
827 my $message;
828 my $seen = 0;
829 chomp(@lines);
830 foreach my $line (@lines) {
831 if ($line =~ /^source:([\S\s]*)$/) {
832 $source = $1
833 }
834 if ($line =~ /^target:([\S\s]*)$/) {
835 $target = $1;
836 }
837 if ($line =~ /^usr:([\S\s]*)$/) {
838 $usr = $1;
839 }
840 if ($line =~ /^subject:([\S\s]*)$/) {
841 $subject = $1;
842 }
843 if ($line =~ /^message:([\S\s]*)$/) {
844 $message = $1;
845 }
846 if ($line =~ /^seen$/) {
847 $seen++;
848 }
849 }
851 # Send 'confirm_usr_msg' back to msg-hosting server
852 if ($seen) {
853 my %data = ('usr'=>$usr, 'subject'=>$subject, 'message'=>$message);
854 my $confirm_msg = &build_msg("confirm_usr_msg", $target, $source, \%data);
855 my $send_error = &send_msg_to_target($confirm_msg, $server_address, $server_key);
857 # Delete file
858 if (not $send_error) {
859 system("rm $goto_dir/$goto_file");
860 }
861 }
862 }
864 $kernel->delay_set('trigger_seen_messages', $trigger_seen_messages_delay);
866 return;
867 }
870 sub generic_file_error {
871 my ( $heap, $operation, $errno, $error_string, $wheel_id ) =
872 @_[ HEAP, ARG0, ARG1, ARG2, ARG3 ];
874 my $service = $heap->{services}->{$wheel_id};
875 daemon_log("ERROR: '$service' watcher $operation error $errno: $error_string", 1);
876 daemon_log("ERROR: shutting down '$service' file watcher", 1);
878 delete $heap->{services}->{$wheel_id};
879 delete $heap->{watchers}->{$wheel_id};
880 return;
881 }
884 sub fifo_got_record {
885 my $file_record = $_[ARG0];
886 my $header;
887 my $content = "";
888 daemon_log("DEBUG: fifo got record: $file_record", 7);
890 $file_record =~ /^(\S+)[ ]?([\s\S]+)?$/;
891 if( defined $1 ) {
892 $header = $1;
893 } else {
894 return;
895 }
897 if( defined $2 ) {
898 $content = $2;
899 }
901 my $clmsg_hash = &create_xml_hash("CLMSG_$header", $client_address, $server_address, $content);
902 &add_content2xml_hash($clmsg_hash, "macaddress", $client_mac_address);
903 my $utc_ts = &main::get_utc_time();
904 &add_content2xml_hash($clmsg_hash, "timestamp", $utc_ts);
905 my $clmsg = &create_xml_string($clmsg_hash);
906 &send_msg_to_target($clmsg, $server_address, $server_key, "CLMSG_$header");
908 # if installation finished, save all log files
909 if ($file_record eq "TASKBEGIN savelog") {
910 &save_fai_log($fai_log_dir);
911 }
913 return;
914 }
917 sub save_fai_log {
918 my ($fai_log_dir) = @_ ;
919 my $FAI_DIR;
920 my $fai_action;
922 # Directory for log files after a softupdate
923 my $log_dir = File::Spec->catdir($fai_log_dir, "localhost/last");
925 if (not -d $log_dir) {
926 # Directory for log files after a new installation
927 $log_dir = "/tmp/fai";
928 if (not -d $log_dir) {
929 daemon_log("ERROR: cannot open directory $log_dir", 1);
930 return;
931 }
932 $fai_action = "install";
933 }
934 else {
935 # If we already have a logdir, we can assume that this is a softupdate
936 $fai_action = "softupdate";
937 }
939 opendir($FAI_DIR, "$log_dir");
940 my @log_files = readdir($FAI_DIR);
941 closedir($FAI_DIR);
943 my @log_list;
944 foreach my $log_file (@log_files) {
945 if( $log_file eq "." || $log_file eq ".." ) { next; }
947 my $log = "log_file:$log_file:";
948 $log_file = File::Spec->catfile( $log_dir, $log_file );
950 if (not -f $log_file) {
951 daemon_log("ERROR: cannot read $log_file", 1);
952 next;
953 }
955 open(FILE, "<$log_file");
956 my @lines = <FILE> ;
957 close (FILE);
958 my $log_string = join("", @lines);
959 $log .= &encode_base64($log_string);
960 push(@log_list, $log);
961 }
963 my $all_log_string = join("\n", @log_list);
964 my $msg_hash = &create_xml_hash("CLMSG_save_fai_log", $client_address, $server_address, $all_log_string);
965 &add_content2xml_hash($msg_hash, "macaddress", $client_mac_address);
966 &add_content2xml_hash($msg_hash, "fai_action", $fai_action);
967 my $msg = &create_xml_string($msg_hash);
968 &send_msg_to_target($msg, $server_address, $server_key, "CLMSG_save_fai_log");
970 }
973 sub sig_handler {
974 my ($kernel, $signal) = @_[KERNEL, ARG0] ;
975 daemon_log("0 INFO got signal '$signal'", 1);
976 $kernel->sig_handled();
977 return;
978 }
981 sub _start {
982 my ($kernel, $heap) = @_[KERNEL, HEAP];
983 $kernel->alias_set('client_session');
984 $global_kernel = $kernel; # this is used to throw events at each point of the skript
986 $kernel->sig(USR1 => "sig_handler");
988 # force a registration at a gosa-si-server
989 $kernel->yield('register_at_gosa_si_server');
991 # install all file watcher defined
992 while( my($name, $file) = each %files_to_watch ) {
993 my $watcher = POE::Wheel::FollowTail->new(
994 Filename => $file,
995 InputEvent => $name."_record",
996 # ResetEvent => "file_reset",
997 ErrorEvent => "file_error",
998 );
999 # $heap->{tail} = POE::Wheel::Run->new(
1000 # Program => [ "/usr/bin/tail", "-f", $file ],
1001 # StdoutEvent => $file_name."_record",
1002 # );
1003 $heap->{services}->{ $watcher->ID } = $name;
1004 $heap->{watchers}->{ $watcher->ID } = $watcher;
1005 }
1006 $kernel->yield('trigger_logged_in_users_report');
1007 $kernel->yield('trigger_seen_messages');
1008 }
1011 sub _default {
1012 daemon_log("ERROR: can not handle incoming msg with header '$_[ARG0]'", 1);
1013 return;
1014 }
1017 sub server_input {
1018 my ($kernel, $heap, $input, $wheel) = @_[KERNEL, HEAP, ARG0, ARG1];
1019 my $remote_ip = $heap->{'remote_ip'},
1020 my $error = 0;
1021 my $answer;
1024 daemon_log("INFO: Incoming msg from '$remote_ip'", 5);
1025 daemon_log("DEBUG: Incoming msg:\n$input\n", 9);
1027 my ($msg, $msg_hash) = &check_key_and_xml_validity($input, $server_key);
1028 if( (!$msg) || (!$msg_hash) ) {
1029 daemon_log("WARNING: Deciphering of incoming msg failed", 3);
1030 if($server_address =~ /$remote_ip/) {
1031 # got a msg from gosa-si-server which can not be decrypted, may the secrete not up-to-date
1032 # cause a reregistering with a new secrete handshake
1033 daemon_log("WARNING: Message from gosa-si-server could not be understood, cause reregistering at server", 3);
1035 # if client is alread in a registration process, that means not registered, do nothing
1036 # if not, cause re-registration
1037 if ($REGISTRATION_IN_PROGRESS) {
1038 &daemon_log("WARNING: gosa-si-client is already in a registration process so ignore this message", 3);
1039 } else {
1040 if ($FAILED_CRYPTO > $max_failed_crypto_messages) {
1041 # Force usage of a new server
1042 daemon_log("Failed to decrypt a total of $max_failed_crypto_messages messages from the server. Trying to switch to another one", 3);
1043 $REGISTRATION_TRIES = $max_failed_crypto_messages;
1044 my $server = shift(@servers);
1045 push(@servers, $server);
1046 }
1047 $FAILED_CRYPTO++;
1048 $REGISTERED = 0;
1049 $kernel->post('client_session', 'register_at_gosa_si_server');
1050 }
1051 }
1052 $error++;
1053 }
1056 ######################
1057 # process incoming msg
1058 if( $error == 0 ) {
1059 # Reset failed crypto messages state
1060 $FAILED_CRYPTO = 0;
1062 my $header = @{$msg_hash->{header}}[0];
1063 my $source = @{$msg_hash->{source}}[0];
1065 if( exists $event_hash->{$header} ) {
1067 # a event exists with the header as name
1068 daemon_log("INFO: found event '$header' at event-module '".$event_hash->{$header}."'", 5);
1069 no strict 'refs';
1070 $answer = &{$event_hash->{$header}."::$header"}($msg, $msg_hash);
1071 }
1072 else {
1073 daemon_log("WARNING: no event '$header' found in event modules under $event_dir", 3);
1074 }
1075 }
1077 ########
1078 # answer
1079 if( $answer ) {
1081 #check gosa-si envelope validity
1082 my $answer_hash = &check_outgoing_xml_validity($answer);
1084 if( $answer_hash ) {
1085 # answer is valid
1087 # preprocessing
1088 if( $answer =~ "<header>registered</header>") {
1089 # set registered flag to true to stop sending further registered msgs
1090 $REGISTERED = 1;
1091 $REGISTRATION_IN_PROGRESS = 0;
1092 }
1093 else {
1094 $answer =~ /<header>(\S+)<\/header>/;
1095 &send_msg_to_target($answer, $server_address, $server_key, $1);
1096 }
1098 # postprocessing
1099 if( $answer =~ "<header>new_key</header>") {
1100 # set new key to global variable
1101 $answer =~ /<new_key>(\S*?)<\/new_key>/;
1102 my $new_key = $1;
1103 $server_key = $new_key;
1104 }
1105 }
1107 }
1109 return;
1110 }
1112 sub find_servers {
1113 # add gosa-si-server address from config file at first position of server list
1114 my $server_check_cfg = Config::IniFiles->new( -file => $cfg_file );
1116 # Parse servers string
1117 my @conf_servers = split(',', $servers_string);
1119 # Now search for fallback servers in the configuration
1120 foreach my $cur_server (@conf_servers) {
1121 # Remove spaces from the IP
1122 $cur_server =~ s/\s//g;
1124 my $ip = $cur_server;
1125 if(not $cur_server =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}/) {
1126 my $ip_address = inet_ntoa(scalar gethostbyname($ip));
1127 if(defined($ip_address) && $ip_address =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}/) {
1128 # Write ip address to $server_ip variable
1129 $ip = $ip_address;
1130 }
1131 }
1133 my $server_addr = sprintf("%s:%s", $ip, $server_port);
1134 if (not grep { $_ eq $server_addr } @servers) {
1135 push(@servers, $server_addr);
1136 }
1137 }
1139 my $servers_string = join(", ", @servers);
1140 daemon_log("INFO: found servers in configuration file: $servers_string", 1);
1142 # Last but not least search for fallback servers in the DNS
1143 if (defined($opts_dnslookup) and $opts_dnslookup eq "true") {
1144 my @tmp_servers;
1145 if ( !$server_domain) {
1146 # Try our DNS Searchlist
1147 my @domain_list = &get_dns_domains();
1148 my $tmp_domains;
1149 my $error_string;
1150 for my $domain (@domain_list) {
1151 chomp($domain);
1152 ($tmp_domains, $error_string) = &get_server_addresses($domain);
1153 if(@$tmp_domains) {
1154 for my $tmp_server(@$tmp_domains) {
1155 push @tmp_servers, $tmp_server;
1156 }
1157 }
1158 }
1160 if (0 == @tmp_servers) {
1161 daemon_log("INFO: No servers found in DNS.", 1);
1162 }
1163 else {
1164 my $servers_string = join(", ", @tmp_servers);
1165 daemon_log("INFO: found servers in DNS: $servers_string", 1);
1166 }
1167 } else {
1168 @tmp_servers = &get_server_addresses($server_domain);
1169 if( 0 == @tmp_servers ) {
1170 daemon_log("INFO: No servers found in DNS for domain '$server_domain'",1);
1171 }
1172 }
1174 if ( 0 != @tmp_servers ) {
1175 foreach my $server_addr (@tmp_servers) {
1176 if (not grep { $_ eq $server_addr } @servers) {
1177 push(@servers, $server_addr);
1178 }
1179 }
1180 }
1181 }
1183 if (0 == scalar(@servers)) {
1184 daemon_log("ERROR: No servers found in the configuration or DNS.", 1);
1185 exit(1);
1186 }
1188 # Define first server as server_ip
1189 $server_ip = $servers[0];
1191 # prepare variables
1192 if( inet_aton($server_ip) ){ $server_ip = inet_ntoa(inet_aton($server_ip)); }
1193 if (defined $server_ip && defined $server_port) {
1194 $server_address = $server_ip.":".$server_port;
1195 }
1196 }
1198 #==== MAIN = main ==============================================================
1199 # parse commandline options
1200 Getopt::Long::Configure( "bundling" );
1201 GetOptions("h|help" => \&usage,
1202 "c|config=s" => \$cfg_file,
1203 "f|foreground" => \$foreground,
1204 "v|verbose+" => \$verbose,
1205 );
1207 # read and set config parameters
1208 &check_cmdline_param ;
1209 &read_configfile($cfg_file, %cfg_defaults);
1210 &check_pid;
1212 # forward error messages to logfile
1213 if ( ! $foreground ) {
1214 open( STDIN, '+>/dev/null' );
1215 open( STDOUT, '+>&STDIN' );
1216 open( STDERR, '+>&STDIN' );
1217 }
1219 # Just fork, if we are not in foreground mode
1220 if( ! $foreground ) {
1221 chdir '/' or die "Can't chdir to /: $!";
1222 $pid = fork;
1223 setsid or die "Can't start a new session: $!";
1224 umask 0;
1225 } else {
1226 $pid = $$;
1227 }
1229 # Do something useful - put our PID into the pid_file
1230 if( 0 != $pid ) {
1231 open( LOCK_FILE, ">$pid_file" );
1232 print LOCK_FILE "$pid\n";
1233 close( LOCK_FILE );
1234 if( !$foreground ) {
1235 exit( 0 )
1236 };
1237 }
1239 # parse head url and revision from svn
1240 my $client_status_hash = { 'developmental'=>'revision', 'stable'=>'release'};
1241 $client_version =~ /^\$HeadURL: (\S+) \$:\$Rev: (\d+) \$$/;
1242 $client_headURL = defined $1 ? $1 : 'unknown' ;
1243 $client_revision = defined $2 ? $2 : 'unknown' ;
1244 if ($client_headURL =~ /\/tag\// ||
1245 $client_headURL =~ /\/branches\// ) {
1246 $client_status = "stable";
1247 } else {
1248 $client_status = "developmental" ;
1249 }
1251 # Determine root uid and adm gid, used for creating log files
1252 $root_uid = getpwnam('root');
1253 $adm_gid = getgrnam('adm');
1254 if(not defined $adm_gid){
1255 $adm_gid = getgrnam('root');
1256 }
1259 daemon_log(" ", 1);
1260 daemon_log("$prg started!", 1);
1261 daemon_log("INFO: status: $client_status", 1);
1262 daemon_log("INFO: ".$client_status_hash->{$client_status}.": $client_revision", 1);
1264 # delete old DBsqlite lock files
1265 system('rm -f /tmp/gosa_si_lock*gosa-si-client*');
1267 # detect ip and mac address and complete host address
1268 $client_address = $client_ip.":".$client_port;
1269 my $network_interface= &get_interface_for_ip($client_ip);
1270 $client_mac_address= &get_mac($network_interface);
1271 daemon_log("INFO: ip address detected: $client_ip", 1);
1272 daemon_log("INFO: gosa-si-client mac address detected: $client_mac_address", 1);
1275 # import events
1276 my ($error, $result, $tmp_hash) = &import_events($event_dir);
1277 while (my ($module, $mod_event_hash) = each %$tmp_hash) {
1278 while (my ($event_name, $nothing) = each %$mod_event_hash) {
1279 $event_hash->{$event_name} = $module;
1280 }
1281 }
1283 foreach my $log_line (@$result) {
1284 if ($log_line =~ / succeed: /) {
1285 &main::daemon_log("0 DEBUG: $log_line", 7);
1286 } else {
1287 &main::daemon_log("0 ERROR: $log_line", 1);
1288 }
1289 }
1292 # compute hardware checksum
1293 $gotoHardwareChecksum= &generate_hw_digest();
1294 daemon_log("INFO: gotoHardwareChecksum detected: $gotoHardwareChecksum", 1);
1297 # create socket for incoming xml messages
1298 POE::Component::Server::TCP->new(
1299 Alias => 'gosa-si-client',
1300 Port => $client_port,
1301 ClientInput => \&server_input,
1302 );
1303 daemon_log("INFO: start socket for incoming xml messages at port '$client_port' ", 1);
1305 $xml = new XML::Simple();
1306 $default_server_key = $server_key;
1308 # Find servers from config and DNS
1309 &find_servers;
1311 # open fifo for non-gosa-si-client-msgs to gosa-si-server
1312 POSIX::mkfifo("$gosa_si_client_fifo", "0600");
1315 POE::Session->create(
1316 inline_states => {
1317 _start => \&_start,
1318 _default => \&_default,
1319 sig_handler => \&sig_handler,
1320 register_at_gosa_si_server => \®ister_at_gosa_si_server,
1322 # trigger periodical tasks
1323 trigger_new_key => \&trigger_new_key,
1324 trigger_logged_in_users_report => \&trigger_logged_in_users_report,
1325 trigger_seen_messages => \&trigger_seen_messages,
1327 # handle records from each defined file differently
1328 fifo_record => \&fifo_got_record,
1330 # handle file resets and errors the same way for each file
1331 file_reset => \&generic_file_reset,
1332 file_error => \&generic_file_error,
1333 }
1334 );
1336 POE::Kernel->run();
1337 exit;