403261ac6300e77c4eefba23731ed706c27b9902
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 " $msg " );
219 }
220 exit( -1 );
221 }
222 }
224 sub clean_shutdown
225 {
226 unlink($pid_file) if (-w $pid_file);
227 unlink($gosa_si_client_fifo) if (-S $gosa_si_client_fifo);
228 }
230 sub sig_int_or_term_handler
231 {
232 my ($signal) = @_;
233 daemon_log("Got SIG${signal} - shutting down gosa-si-client", 1);
234 clean_shutdown();
235 POE::Kernel->signal('client_session', 'KILL');
236 POE::Kernel->signal('gosa-si-client', 'KILL');
237 return 1;
238 }
240 sub sig_warn_handler
241 {
242 my @loc = caller(0);
243 daemon_log( "SIGWARN line " . $loc[2] . ": " . $_[0], 1 );
244 return 1;
245 }
247 sub sig_die_handler
248 {
249 my @loc = caller(0);
250 daemon_log( "SIGDIE line " . $loc[2] . ": " . $_[0], 1 );
251 clean_shutdown();
252 return 1;
253 }
255 $SIG{'INT'} = \&sig_int_or_term_handler;
256 $SIG{'TERM'} = \&sig_int_or_term_handler;
257 $SIG{'__WARN__'} = \&sig_warn_handler;
258 $SIG{'__DIE__'} = \&sig_die_handler;
259 $SIG{'USR1'} = 'IGNORE';
260 $SIG{'USR2'} = 'IGNORE';
262 #=== FUNCTION ================================================================
263 # NAME: logging
264 # PARAMETERS: level - string - default 'info'
265 # msg - string -
266 # facility - string - default 'LOG_DAEMON'
267 # RETURNS:
268 # DESCRIPTION:
269 #===============================================================================
270 sub daemon_log {
271 # log into log_file
272 my( $msg, $level ) = @_;
273 if(not defined $msg) { return }
274 if(not defined $level) { $level = 1 }
275 if(defined $log_file){
276 my $open_log_fh = sysopen(LOG_HANDLE, $log_file, O_WRONLY | O_CREAT | O_APPEND , 0440);
277 if(not $open_log_fh) {
278 print STDERR "cannot open $log_file: $!";
279 return;
280 }
281 # check owner and group of log_file and update settings if necessary
282 my ($dev, $ino, $mode, $nlink, $uid, $gid, $rdev, $size, $atime, $mtime, $ctime, $blksize, $blocks) = stat($log_file);
283 if((not $uid eq $root_uid) || (not $gid eq $adm_gid)) {
284 chown($root_uid, $adm_gid, $log_file);
285 }
287 chomp($msg);
288 if($level <= $verbose){
289 my ($seconds, $minutes, $hours, $monthday, $month,
290 $year, $weekday, $yearday, $sommertime) = localtime(time);
291 $hours = $hours < 10 ? $hours = "0".$hours : $hours;
292 $minutes = $minutes < 10 ? $minutes = "0".$minutes : $minutes;
293 $seconds = $seconds < 10 ? $seconds = "0".$seconds : $seconds;
294 my @monthnames = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
295 $month = $monthnames[$month];
296 $monthday = $monthday < 10 ? $monthday = "0".$monthday : $monthday;
297 $year+=1900;
299 my $log_msg = "$month $monthday $hours:$minutes:$seconds $prg $msg\n";
300 print LOG_HANDLE $log_msg;
301 if( $foreground ) {
302 print STDERR $log_msg;
303 }
304 }
305 close( LOG_HANDLE );
306 }
307 }
310 #=== FUNCTION ================================================================
311 # NAME: get_mac
312 # PARAMETERS: interface name (i.e. eth0)
313 # RETURNS: (mac address)
314 # DESCRIPTION: Uses ioctl to get mac address directly from system.
315 #===============================================================================
316 sub get_mac {
317 my $ifreq= shift;
318 my $result;
319 if ($ifreq && length($ifreq) > 0) {
320 if($ifreq eq "all") {
321 if(defined($server_ip)) {
322 $result = &get_local_mac_for_remote_ip($server_ip);
323 }
324 elsif ($client_mac_address && length($client_mac_address) > 0 && !($client_mac_address eq "00:00:00:00:00:00")){
325 $result = &client_mac_address;
326 }
327 else {
328 $result = "00:00:00:00:00:00";
329 }
330 } else {
331 my $SIOCGIFHWADDR= 0x8927; # man 2 ioctl_list
333 # A configured MAC Address should always override a guessed value
334 if ($client_mac_address and length($client_mac_address) > 0 and not($client_mac_address eq "00:00:00:00:00:00")) {
335 $result= $client_mac_address;
336 }
337 else {
338 socket SOCKET, PF_INET, SOCK_DGRAM, getprotobyname('ip')
339 or die "socket: $!";
341 if(ioctl SOCKET, $SIOCGIFHWADDR, $ifreq) {
342 my ($if, $mac)= unpack 'h36 H12', $ifreq;
344 if (length($mac) > 0) {
345 $mac=~ m/^([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])$/;
346 $mac= sprintf("%s:%s:%s:%s:%s:%s", $1, $2, $3, $4, $5, $6);
347 $result = $mac;
348 }
349 }
350 }
351 }
352 }
353 return $result;
354 }
357 #=== FUNCTION ================================================================
358 # NAME: get_local_mac_for_remote_ip
359 # PARAMETERS: none (takes server_ip from global variable)
360 # RETURNS: (ip address from interface that is used for communication)
361 # DESCRIPTION: Uses ioctl to get routing table from system, checks which entry
362 # matches (defaultroute last).
363 #===============================================================================
364 sub get_local_mac_for_remote_ip {
365 my $server_ip= shift;
366 my $result= "00:00:00:00:00:00";
368 if($server_ip =~ /^[a-z][a-z0-9\.]$/i) {
369 my $ip_address = inet_ntoa(scalar gethostbyname($server_ip));
370 if(defined($ip_address) && $ip_address =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}/) {
371 # Write ip address to $server_ip variable
372 $server_ip = $ip_address;
373 }
374 }
376 if($server_ip =~ /^(\d\d?\d?\.){3}\d\d?\d?$/) {
377 my $PROC_NET_ROUTE= ('/proc/net/route');
379 open(PROC_NET_ROUTE, "<$PROC_NET_ROUTE")
380 or die "Could not open $PROC_NET_ROUTE";
382 my @ifs = <PROC_NET_ROUTE>;
384 close(PROC_NET_ROUTE);
386 # Eat header line
387 shift @ifs;
388 chomp @ifs;
389 foreach my $line(@ifs) {
390 my ($Iface,$Destination,$Gateway,$Flags,$RefCnt,$Use,$Metric,$Mask,$MTU,$Window,$IRTT)=split(/\s/, $line);
391 my $destination;
392 my $mask;
393 my ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Destination);
394 $destination= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
395 ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Mask);
396 $mask= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
397 if(new NetAddr::IP($server_ip)->within(new NetAddr::IP($destination, $mask))) {
398 # destination matches route, save mac and exit
399 $result= &get_mac($Iface);
400 last;
401 }
402 }
403 } else {
404 daemon_log("get_local_mac_for_remote_ip was called with a non-ip parameter: $server_ip", 1);
405 }
406 return $result;
407 }
410 sub generate_hw_digest {
411 my $hw_data;
412 foreach my $line (split /\n/, `cat /proc/bus/pci/devices`) {
413 $hw_data.= sprintf "%s", $line =~ /[^\s]+\s([^\s]+)\s.*/;
414 }
415 return(md5_base64($hw_data));
416 }
419 sub create_ciphering {
420 my ($passwd) = @_;
421 if((!defined($passwd)) || length($passwd)==0) {
422 $passwd = "";
423 }
424 $passwd = substr(md5_hex("$passwd") x 32, 0, 32);
425 my $iv = substr(md5_hex('GONICUS GmbH'),0, 16);
426 my $my_cipher = Crypt::Rijndael->new($passwd , Crypt::Rijndael::MODE_CBC());
427 $my_cipher->set_iv($iv);
428 return $my_cipher;
429 }
432 sub encrypt_msg {
433 my ($msg, $key) = @_;
434 my $my_cipher = &create_ciphering($key);
435 my $len;
436 {
437 use bytes;
438 $len= 16-length($msg)%16;
439 }
440 $msg = "\0"x($len).$msg;
441 $msg = $my_cipher->encrypt($msg);
442 chomp($msg = &encode_base64($msg));
443 # there are no newlines allowed inside msg
444 $msg=~ s/\n//g;
445 return $msg;
446 }
449 sub decrypt_msg {
451 my ($msg, $key) = @_ ;
452 $msg = &decode_base64($msg);
453 my $my_cipher = &create_ciphering($key);
454 $msg = $my_cipher->decrypt($msg);
455 $msg =~ s/\0*//g;
456 return $msg;
457 }
460 #=== FUNCTION ================================================================
461 # NAME: send_msg_hash_to_target
462 # PARAMETERS: msg_hash - hash - xml_hash created with function create_xml_hash
463 # PeerAddr string - socket address to send msg
464 # PeerPort string - socket port, if not included in socket address
465 # RETURNS: nothing
466 # DESCRIPTION: ????
467 #===============================================================================
468 sub send_msg_hash_to_target {
469 my ($msg_hash, $address, $encrypt_key) = @_ ;
470 my $msg = &create_xml_string($msg_hash);
471 my $header = @{$msg_hash->{'header'}}[0];
472 my $error = &send_msg_to_target($msg, $address, $encrypt_key, $header);
474 return $error;
475 }
478 sub send_msg_to_target {
479 my ($msg, $address, $encrypt_key, $msg_header) = @_ ;
480 my $error = 0;
482 if( $msg_header ) { $msg_header = "'$msg_header'-"; }
483 else { $msg_header = ""; }
485 # Memorize own source address
486 $msg =~ /<source>(\S+)<\/source>/;
487 my $own_source_address = $1;
489 # encrypt xml msg
490 my $crypted_msg = &encrypt_msg($msg, $encrypt_key);
492 # opensocket
493 my $socket = &open_socket($address);
494 if( !$socket ) {
495 daemon_log("WARNING: cannot send ".$msg_header."msg to $address , host not reachable", 3);
496 if ($REGISTERED == 1) {
497 $REGISTERED = 0; # if server is not available, cause reregistering
498 daemon_log("INFO: cause reregistering at gosa-si-server", 5);
499 $global_kernel->post('client_session', 'register_at_gosa_si_server');
501 }
502 $error++;
503 }
505 # send xml msg
506 if( $error == 0 ) {
507 print $socket $crypted_msg.";$own_source_address\n";
508 daemon_log("INFO: send ".$msg_header."msg to $address", 5);
509 daemon_log("DEBUG: message:\n$msg", 9);
510 }
512 # close socket in any case
513 if( $socket ) {
514 close $socket;
515 }
517 return $error;
518 }
521 sub write_to_file {
522 my ($string, $file) = @_;
523 my $error = 0;
525 if( not defined $file || not -f $file ) {
526 &main::daemon_log("ERROR: $prg: check '-f file' failed: $file", 1);
527 $error++;
528 }
529 if( not defined $string || 0 == length($string)) {
530 &main::daemon_log("ERROR: $prg: empty string to write to file '$file'", 1);
531 $error++;
532 }
534 if( $error == 0 ) {
536 chomp($string);
538 if (open(FILE, ">> $file")){
539 print FILE $string."\n";
540 close(FILE);
541 }
542 }
544 return;
545 }
548 sub open_socket {
549 my ($PeerAddr, $PeerPort) = @_ ;
550 if(defined($PeerPort)){
551 $PeerAddr = $PeerAddr.":".$PeerPort;
552 }
553 my $socket;
554 $socket = new IO::Socket::INET(PeerAddr => $PeerAddr,
555 Porto => "tcp",
556 Type => SOCK_STREAM,
557 Timeout => 5,
558 );
559 if(not defined $socket) {
560 return;
561 }
562 &daemon_log("DEBUG: open_socket: $PeerAddr", 7);
563 return $socket;
564 }
567 #=== FUNCTION ================================================================
568 # NAME: register_at_server
569 # PARAMETERS:
570 # RETURNS:
571 # DESCRIPTION:
572 #===============================================================================
573 sub register_at_gosa_si_server {
574 my ($kernel) = $_[KERNEL];
576 # if client is already registered, stop registration process
577 if ($REGISTERED) {
578 $kernel->delay('register_at_gosa_si_server');
580 # client is not registered, start registration process
581 } else {
582 $REGISTRATION_IN_PROGRESS = 1;
584 # clear all other triggered events and wait till registration was successful
585 $kernel->delay('trigger_new_key');
587 # create new passwd and ciphering object for client-server communication
588 $server_key = &create_passwd();
590 my $events = join( ",", keys %{$event_hash} );
591 while(1) {
592 $REGISTRATION_TRIES++;
594 # fetch first gosa-si-server from @servers
595 # append shifted gosa-si-server at the end of @servers, so looking for servers never stop if
596 # a registration never occured
597 my $server = shift(@servers);
598 push(@servers, $server);
599 ($server_ip = $server) =~ s/:.*$//;
600 $server_address = $server;
602 # Check if our ip is resolvable - if not: don't try to register
603 if(!(defined($server) && $server =~ m/^[0-9\.]*?:.*$/)) {
604 &main::daemon_log("ERROR: Server with address '".defined($server)?$server:""."' is invalid!", 1);
605 if (scalar(@servers) == 1) {
606 &main::daemon_log("ERROR: No valid servers found!", 1);
607 exit(1);
608 }
609 }
611 # Check if our ip is resolvable - if not: don't try to register
612 my $ip= &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
613 my $dnsname= gethostbyaddr(inet_aton($ip), AF_INET);
614 if(!defined($dnsname)) {
615 if( defined($client_force_hostname) && $client_force_hostname eq "true") {
616 $dnsname = `hostname`;
617 } else {
618 &write_to_file("goto-error-dns:$ip", $fai_logpath);
619 &main::daemon_log("ERROR: ip is not resolvable, no registration possible. Write 'goto-error-dns:$ip' to $fai_logpath", 1);
620 exit(1);
621 }
622 }
624 # create registration msg
625 my $local_ip = &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
626 my $local_mac = &get_local_mac_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
627 my $register_hash = &create_xml_hash("here_i_am", $local_ip.":".$client_port, $server);
628 &add_content2xml_hash($register_hash, "new_passwd", $server_key);
629 &add_content2xml_hash($register_hash, "mac_address", $local_mac);
630 &add_content2xml_hash($register_hash, "events", $events);
631 &add_content2xml_hash($register_hash, "client_status", $client_status);
632 &add_content2xml_hash($register_hash, "client_revision", $client_revision);
633 &add_content2xml_hash($register_hash, "gotoHardwareChecksum", $gotoHardwareChecksum);
634 &add_content2xml_hash($register_hash, "key_lifetime", $server_key_lifetime);
636 # Add $HOSTNAME from ENV if force-hostname is set
637 if( defined($client_force_hostname) && $client_force_hostname eq "true") {
638 if(defined($ENV{HOSTNAME}) && length($ENV{HOSTNAME}) >0 ) {
639 &add_content2xml_hash($register_hash, "force-hostname", $ENV{HOSTNAME});
640 } else {
641 &main::daemon_log("force-hostname was set to true, but no \$HOSTNAME was found in Environment!",0);
642 }
643 }
645 # send xml hash to server with general server passwd
646 my $res = &send_msg_hash_to_target($register_hash, $server, $default_server_key);
648 # if delivery of registration msg succeed
649 if(defined($res) and $res eq "0") {
650 # reset try_to_register
651 $REGISTRATION_TRIES = 0;
653 # Set fixed client address and mac address
654 $client_ip= &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
655 $client_address= "$client_ip:$client_port";
656 $client_mac_address = $local_mac;
657 $client_dnsname = $dnsname;
658 last;
660 # delivery of registration msg failed
661 } elsif($REGISTRATION_TRIES >= scalar(@servers)) {
662 last;
663 }
665 } # end of while
666 # one circle through all servers finished and no registration succeed
667 if ( $REGISTRATION_TRIES >= (scalar(@servers)) ) {
668 &write_to_file("gosa-si-no-server-available", $fai_logpath);
669 $kernel->delay_set('register_at_gosa_si_server', $delay_set_time);
671 # delivery of registraion msg succeed, waiting for server response
672 } else {
673 daemon_log("INFO: waiting for msg 'register_at_gosa_si_server'",5);
674 $kernel->delay_set('register_at_gosa_si_server', $delay_set_time);
675 # clear old settings and set it again
676 $kernel->delay('trigger_new_key');
677 $kernel->delay_set('trigger_new_key', $server_key_lifetime);
678 }
680 }
681 return;
682 }
685 sub check_key_and_xml_validity {
686 my ($crypted_msg, $module_key) = @_;
688 my $msg;
689 my $msg_hash;
690 eval{
691 $msg = &decrypt_msg($crypted_msg, $module_key);
692 &main::daemon_log("decrypted_msg: \n$msg", 9);
694 $msg_hash = $xml->XMLin($msg, ForceArray=>1);
696 ##############
697 # check header
698 my $header_l = $msg_hash->{'header'};
699 if( 1 != @{$header_l} ) {
700 die 'no or more headers specified';
701 }
702 my $header = @{$header_l}[0];
703 if( 0 == length $header) {
704 die 'header has length 0';
705 }
707 ##############
708 # check source
709 my $source_l = $msg_hash->{'source'};
710 if( 1 != @{$source_l} ) {
711 die 'no or more than 1 sources specified';
712 }
713 my $source = @{$source_l}[0];
714 if( 0 == length $source) {
715 die 'source has length 0';
716 }
717 unless( $source =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ) {
718 die "source '$source' is neither a complete ip-address with port nor 'GOSA'";
719 }
721 ##############
722 # check target
723 my $target_l = $msg_hash->{'target'};
724 if( 1 != @{$target_l} ) {
725 die 'no or more than 1 targets specified ';
726 }
727 my $target = @{$target_l}[0];
728 if( 0 == length $target) {
729 die 'target has length 0 ';
730 }
731 unless( $target =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ){
732 die "source is neither a complete ip-address with port nor 'GOSA'";
733 }
734 };
735 if($@) {
736 &main::daemon_log("WARNING: do not understand the message or msg is not gosa-si envelope conform:", 5);
737 &main::daemon_log("$@", 8);
738 $msg = undef;
739 $msg_hash = undef;
740 }
742 return ($msg, $msg_hash);
743 }
746 sub check_outgoing_xml_validity {
747 my ($msg) = @_;
749 my $msg_hash;
750 eval{
751 $msg_hash = $xml->XMLin($msg, ForceArray=>1);
753 ##############
754 # check header
755 my $header_l = $msg_hash->{'header'};
756 if( 1 != @{$header_l} ) {
757 die 'no or more than one headers specified';
758 }
759 my $header = @{$header_l}[0];
760 if( 0 == length $header) {
761 die 'header has length 0';
762 }
764 ##############
765 # check source
766 my $source_l = $msg_hash->{'source'};
767 if( 1 != @{$source_l} ) {
768 die 'no or more than 1 sources specified';
769 }
770 my $source = @{$source_l}[0];
771 if( 0 == length $source) {
772 die 'source has length 0';
773 }
774 unless( $source =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ||
775 $source =~ /^GOSA$/i ) {
776 die "source '$source' is neither a complete ip-address with port";
777 }
779 ##############
780 # check target
781 my $target_l = $msg_hash->{'target'};
782 if( 1 != @{$target_l} ) {
783 die "no or more than one targets specified";
784 }
785 foreach my $target (@$target_l) {
786 if( 0 == length $target) {
787 die "target has length 0";
788 }
789 unless( $target =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ) {
790 die "target '$target' is not a complete ip-address with port or a valid target name";
791 }
792 }
793 };
794 if($@) {
795 daemon_log("WARNING: outgoing msg is not gosa-si envelope conform", 5);
796 daemon_log("$@ $msg", 8);
797 $msg_hash = undef;
798 }
799 return ($msg_hash);
800 }
803 sub trigger_new_key {
804 my ($kernel) = $_[KERNEL] ;
806 my $msg = "<xml><header>new_key</header><source>$client_address</source><target>$client_address</target></xml>";
807 &send_msg_to_target($msg, $client_address, $server_key, 'new_key');
809 $kernel->delay_set('trigger_new_key', $server_key_lifetime);
810 }
813 sub trigger_logged_in_users_report {
814 my ($kernel) = $_[KERNEL] ;
816 # just do if client is registered already
817 if( $REGISTERED ) {
818 my $result = qx(/usr/bin/users);
819 my @logged_in_user_list;
820 if( defined $result ) {
821 chomp($result);
822 @logged_in_user_list = split(/\s/, $result);
823 }
825 system("echo 'CURRENTLY_LOGGED_IN ".join(" ", @logged_in_user_list)."' > /var/run/gosa-si-client.socket");
826 $kernel->delay_set('trigger_logged_in_users_report', $trigger_logged_in_users_report_delay);
827 } else {
828 # try it in 10 sec again
829 $kernel->delay_set('trigger_logged_in_users_report', 10);
830 }
831 }
834 sub trigger_seen_messages {
835 my ($kernel) = $_[KERNEL] ;
837 # Select all files under /tmp with prefix 'goto_notify'
838 my $goto_dir = "/tmp";
839 opendir(DIR, $goto_dir);
840 my @goto_files = grep { /.goto_notify$/ && -f "$goto_dir/$_" } readdir(DIR);
841 closedir DIR;
843 # Check if file has 'seen' tag
844 foreach my $goto_file (@goto_files) {
845 open(FILE, "$goto_dir/$goto_file");
846 my @lines = <FILE>;
847 close FILE;
849 my $source;
850 my $target;
851 my $usr;
852 my $subject;
853 my $message;
854 my $seen = 0;
855 chomp(@lines);
856 foreach my $line (@lines) {
857 if ($line =~ /^source:([\S\s]*)$/) {
858 $source = $1
859 }
860 if ($line =~ /^target:([\S\s]*)$/) {
861 $target = $1;
862 }
863 if ($line =~ /^usr:([\S\s]*)$/) {
864 $usr = $1;
865 }
866 if ($line =~ /^subject:([\S\s]*)$/) {
867 $subject = $1;
868 }
869 if ($line =~ /^message:([\S\s]*)$/) {
870 $message = $1;
871 }
872 if ($line =~ /^seen$/) {
873 $seen++;
874 }
875 }
877 # Send 'confirm_usr_msg' back to msg-hosting server
878 if ($seen) {
879 my %data = ('usr'=>$usr, 'subject'=>$subject, 'message'=>$message);
880 my $confirm_msg = &build_msg("confirm_usr_msg", $target, $source, \%data);
881 my $send_error = &send_msg_to_target($confirm_msg, $server_address, $server_key);
883 # Delete file
884 if (not $send_error) {
885 system("rm $goto_dir/$goto_file");
886 }
887 }
888 }
890 $kernel->delay_set('trigger_seen_messages', $trigger_seen_messages_delay);
892 return;
893 }
896 sub generic_file_error {
897 my ( $heap, $operation, $errno, $error_string, $wheel_id ) =
898 @_[ HEAP, ARG0, ARG1, ARG2, ARG3 ];
900 my $service = $heap->{services}->{$wheel_id};
901 daemon_log("ERROR: '$service' watcher $operation error $errno: $error_string", 1);
902 daemon_log("ERROR: shutting down '$service' file watcher", 1);
904 delete $heap->{services}->{$wheel_id};
905 delete $heap->{watchers}->{$wheel_id};
906 return;
907 }
910 sub fifo_got_record {
911 my $file_record = $_[ARG0];
912 my $header;
913 my $content = "";
914 daemon_log("DEBUG: fifo got record: $file_record", 7);
916 $file_record =~ /^(\S+)[ ]?([\s\S]+)?$/;
917 if( defined $1 ) {
918 $header = $1;
919 } else {
920 return;
921 }
923 if( defined $2 ) {
924 $content = $2;
925 }
927 my $clmsg_hash = &create_xml_hash("CLMSG_$header", $client_address, $server_address, $content);
928 &add_content2xml_hash($clmsg_hash, "macaddress", $client_mac_address);
929 my $utc_ts = &main::get_utc_time();
930 &add_content2xml_hash($clmsg_hash, "timestamp", $utc_ts);
931 my $clmsg = &create_xml_string($clmsg_hash);
932 &send_msg_to_target($clmsg, $server_address, $server_key, "CLMSG_$header");
934 # if installation finished, save all log files
935 if ($file_record eq "TASKBEGIN savelog") {
936 &save_fai_log($fai_log_dir);
937 }
939 return;
940 }
943 sub save_fai_log {
944 my ($fai_log_dir) = @_ ;
945 my $FAI_DIR;
946 my $fai_action;
948 # Directory for log files after a softupdate
949 my $log_dir = File::Spec->catdir($fai_log_dir, "localhost/last");
951 if (not -d $log_dir) {
952 # Directory for log files after a new installation
953 $log_dir = "/tmp/fai";
954 if (not -d $log_dir) {
955 daemon_log("ERROR: cannot open directory $log_dir", 1);
956 return;
957 }
958 $fai_action = "install";
959 }
960 else {
961 # If we already have a logdir, we can assume that this is a softupdate
962 $fai_action = "softupdate";
963 }
965 opendir($FAI_DIR, "$log_dir");
966 my @log_files = readdir($FAI_DIR);
967 closedir($FAI_DIR);
969 my @log_list;
970 foreach my $log_file (@log_files) {
971 if( $log_file eq "." || $log_file eq ".." ) { next; }
973 my $log = "log_file:$log_file:";
974 $log_file = File::Spec->catfile( $log_dir, $log_file );
976 if (not -f $log_file) {
977 daemon_log("ERROR: cannot read $log_file", 1);
978 next;
979 }
981 open(FILE, "<$log_file");
982 my @lines = <FILE> ;
983 close (FILE);
984 my $log_string = join("", @lines);
985 $log .= &encode_base64($log_string);
986 push(@log_list, $log);
987 }
989 my $all_log_string = join("\n", @log_list);
990 my $msg_hash = &create_xml_hash("CLMSG_save_fai_log", $client_address, $server_address, $all_log_string);
991 &add_content2xml_hash($msg_hash, "macaddress", $client_mac_address);
992 &add_content2xml_hash($msg_hash, "fai_action", $fai_action);
993 my $msg = &create_xml_string($msg_hash);
994 &send_msg_to_target($msg, $server_address, $server_key, "CLMSG_save_fai_log");
996 }
999 sub _start {
1000 my ($kernel, $heap) = @_[KERNEL, HEAP];
1001 $kernel->alias_set('client_session');
1002 $global_kernel = $kernel; # this is used to throw events at each point of the skript
1004 # force a registration at a gosa-si-server
1005 $kernel->yield('register_at_gosa_si_server');
1007 # install all file watcher defined
1008 while( my($name, $file) = each %files_to_watch ) {
1009 my $watcher = POE::Wheel::FollowTail->new(
1010 Filename => $file,
1011 InputEvent => $name."_record",
1012 # ResetEvent => "file_reset",
1013 ErrorEvent => "file_error",
1014 );
1015 # $heap->{tail} = POE::Wheel::Run->new(
1016 # Program => [ "/usr/bin/tail", "-f", $file ],
1017 # StdoutEvent => $file_name."_record",
1018 # );
1019 $heap->{services}->{ $watcher->ID } = $name;
1020 $heap->{watchers}->{ $watcher->ID } = $watcher;
1021 }
1022 $kernel->yield('trigger_logged_in_users_report');
1023 $kernel->yield('trigger_seen_messages');
1024 }
1027 sub _stop {
1028 my ($kernel, $session, $heap) = @_[KERNEL, SESSION, HEAP];
1029 delete $heap->{'services'};
1030 delete $heap->{'watchers'};
1031 $kernel->alias_remove($heap->{alias});
1032 $kernel->alarm_remove_all();
1033 $kernel->post($heap->{child_session}, '_stop');
1034 }
1037 sub _default {
1038 daemon_log("ERROR: can not handle incoming msg with header '$_[ARG0]'", 1);
1039 return;
1040 }
1043 sub server_input {
1044 my ($kernel, $heap, $input, $wheel) = @_[KERNEL, HEAP, ARG0, ARG1];
1045 my $remote_ip = $heap->{'remote_ip'},
1046 my $error = 0;
1047 my $answer;
1050 daemon_log("INFO: Incoming msg from '$remote_ip'", 5);
1051 daemon_log("DEBUG: Incoming msg:\n$input\n", 9);
1053 my ($msg, $msg_hash) = &check_key_and_xml_validity($input, $server_key);
1054 if( (!$msg) || (!$msg_hash) ) {
1055 daemon_log("WARNING: Deciphering of incoming msg failed", 3);
1056 if($server_address =~ /$remote_ip/) {
1057 # got a msg from gosa-si-server which can not be decrypted, may the secrete not up-to-date
1058 # cause a reregistering with a new secrete handshake
1059 daemon_log("WARNING: Message from gosa-si-server could not be understood, cause reregistering at server", 3);
1061 # if client is alread in a registration process, that means not registered, do nothing
1062 # if not, cause re-registration
1063 if ($REGISTRATION_IN_PROGRESS) {
1064 &daemon_log("WARNING: gosa-si-client is already in a registration process so ignore this message", 3);
1065 } else {
1066 if ($FAILED_CRYPTO > $max_failed_crypto_messages) {
1067 # Force usage of a new server
1068 daemon_log("Failed to decrypt a total of $max_failed_crypto_messages messages from the server. Trying to switch to another one", 3);
1069 $REGISTRATION_TRIES = $max_failed_crypto_messages;
1070 my $server = shift(@servers);
1071 push(@servers, $server);
1072 }
1073 $FAILED_CRYPTO++;
1074 $REGISTERED = 0;
1075 $kernel->post('client_session', 'register_at_gosa_si_server');
1076 }
1077 }
1078 $error++;
1079 }
1082 ######################
1083 # process incoming msg
1084 if( $error == 0 ) {
1085 # Reset failed crypto messages state
1086 $FAILED_CRYPTO = 0;
1088 my $header = @{$msg_hash->{header}}[0];
1089 my $source = @{$msg_hash->{source}}[0];
1091 if( exists $event_hash->{$header} ) {
1093 # a event exists with the header as name
1094 daemon_log("INFO: found event '$header' at event-module '".$event_hash->{$header}."'", 5);
1095 no strict 'refs';
1096 $answer = &{$event_hash->{$header}."::$header"}($msg, $msg_hash);
1097 }
1098 else {
1099 daemon_log("WARNING: no event '$header' found in event modules under $event_dir", 3);
1100 }
1101 }
1103 ########
1104 # answer
1105 if( $answer ) {
1107 #check gosa-si envelope validity
1108 my $answer_hash = &check_outgoing_xml_validity($answer);
1110 if( $answer_hash ) {
1111 # answer is valid
1113 # preprocessing
1114 if( $answer =~ "<header>registered</header>") {
1115 # set registered flag to true to stop sending further registered msgs
1116 $REGISTERED = 1;
1117 $REGISTRATION_IN_PROGRESS = 0;
1118 }
1119 else {
1120 $answer =~ /<header>(\S+)<\/header>/;
1121 &send_msg_to_target($answer, $server_address, $server_key, $1);
1122 }
1124 # postprocessing
1125 if( $answer =~ "<header>new_key</header>") {
1126 # set new key to global variable
1127 $answer =~ /<new_key>(\S*?)<\/new_key>/;
1128 my $new_key = $1;
1129 $server_key = $new_key;
1130 }
1131 }
1133 }
1135 return;
1136 }
1138 sub find_servers {
1139 # add gosa-si-server address from config file at first position of server list
1140 my $server_check_cfg = Config::IniFiles->new( -file => $cfg_file );
1142 # Parse servers string
1143 my @conf_servers = split(',', $servers_string);
1145 # Now search for fallback servers in the configuration
1146 foreach my $cur_server (@conf_servers) {
1147 # Remove spaces from the IP
1148 $cur_server =~ s/\s//g;
1150 my $ip = $cur_server;
1151 if(not $cur_server =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}/) {
1152 my $ip_address = inet_ntoa(scalar gethostbyname($ip));
1153 if(defined($ip_address) && $ip_address =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}/) {
1154 # Write ip address to $server_ip variable
1155 $ip = $ip_address;
1156 }
1157 }
1159 my $server_addr = sprintf("%s:%s", $ip, $server_port);
1160 if (not grep { $_ eq $server_addr } @servers) {
1161 push(@servers, $server_addr);
1162 }
1163 }
1165 my $servers_string = join(", ", @servers);
1166 daemon_log("INFO: found servers in configuration file: $servers_string", 1);
1168 # Last but not least search for fallback servers in the DNS
1169 if (defined($opts_dnslookup) and $opts_dnslookup eq "true") {
1170 my @tmp_servers;
1171 if ( !$server_domain) {
1172 # Try our DNS Searchlist
1173 my @domain_list = &get_dns_domains();
1174 my $tmp_domains;
1175 my $error_string;
1176 for my $domain (@domain_list) {
1177 chomp($domain);
1178 ($tmp_domains, $error_string) = &get_server_addresses($domain);
1179 if(@$tmp_domains) {
1180 for my $tmp_server(@$tmp_domains) {
1181 push @tmp_servers, $tmp_server;
1182 }
1183 }
1184 }
1186 if (0 == @tmp_servers) {
1187 daemon_log("INFO: No servers found in DNS.", 1);
1188 }
1189 else {
1190 my $servers_string = join(", ", @tmp_servers);
1191 daemon_log("INFO: found servers in DNS: $servers_string", 1);
1192 }
1193 } else {
1194 @tmp_servers = &get_server_addresses($server_domain);
1195 if( 0 == @tmp_servers ) {
1196 daemon_log("INFO: No servers found in DNS for domain '$server_domain'",1);
1197 }
1198 }
1200 if ( 0 != @tmp_servers ) {
1201 foreach my $server_addr (@tmp_servers) {
1202 if (not grep { $_ eq $server_addr } @servers) {
1203 push(@servers, $server_addr);
1204 }
1205 }
1206 }
1207 }
1209 if (0 == scalar(@servers)) {
1210 daemon_log("ERROR: No servers found in the configuration or DNS.", 1);
1211 exit(1);
1212 }
1214 # Define first server as server_ip
1215 $server_ip = $servers[0];
1217 # prepare variables
1218 if( inet_aton($server_ip) ){ $server_ip = inet_ntoa(inet_aton($server_ip)); }
1219 if (defined $server_ip && defined $server_port) {
1220 $server_address = $server_ip.":".$server_port;
1221 }
1222 }
1224 #==== MAIN = main ==============================================================
1225 # parse commandline options
1226 Getopt::Long::Configure( "bundling" );
1227 GetOptions("h|help" => \&usage,
1228 "c|config=s" => \$cfg_file,
1229 "f|foreground" => \$foreground,
1230 "v|verbose+" => \$verbose,
1231 );
1233 # read and set config parameters
1234 &check_cmdline_param ;
1235 &read_configfile($cfg_file, %cfg_defaults);
1236 &check_pid;
1238 # parse head url and revision from svn
1239 my $client_status_hash = { 'developmental'=>'revision', 'stable'=>'release'};
1240 $client_version =~ /^\$HeadURL: (\S+) \$:\$Rev: (\d+) \$$/;
1241 $client_headURL = defined $1 ? $1 : 'unknown' ;
1242 $client_revision = defined $2 ? $2 : 'unknown' ;
1243 if ($client_headURL =~ /\/tag\// ||
1244 $client_headURL =~ /\/branches\// ) {
1245 $client_status = "stable";
1246 } else {
1247 $client_status = "developmental" ;
1248 }
1250 # Determine root uid and adm gid, used for creating log files
1251 $root_uid = getpwnam('root');
1252 $adm_gid = getgrnam('adm');
1253 if(not defined $adm_gid){
1254 $adm_gid = getgrnam('root');
1255 }
1258 daemon_log(" ", 1);
1259 daemon_log("$prg started!", 1);
1260 daemon_log("INFO: status: $client_status", 1);
1261 daemon_log("INFO: ".$client_status_hash->{$client_status}.": $client_revision", 1);
1263 # delete old DBsqlite lock files
1264 system('rm -f /tmp/gosa_si_lock*gosa-si-client*');
1266 # Just fork, if we are not in foreground mode
1267 if( ! $foreground ) {
1268 if (! chdir('/')) {
1269 daemon_log("ERROR: Can't chdir to /: $!");
1270 exit( 1 );
1271 }
1272 umask( 0 );
1273 $pid = fork;
1274 } else {
1275 $pid = $$;
1276 }
1278 if( 0 != $pid ) {
1279 # Parent: put our PID into the $pid_file
1280 open( LOCK_FILE, ">$pid_file" );
1281 print LOCK_FILE "$pid\n";
1282 close( LOCK_FILE );
1283 if( !$foreground ) {
1284 exit( 0 );
1285 }
1286 }
1287 else {
1288 # Child
1289 open( STDIN, '+>/dev/null' );
1290 open( STDOUT, '+>&STDIN' );
1291 open( STDERR, '+>&STDIN' );
1292 if (! POSIX::setsid()) {
1293 deamon_log("ERROR: Can't start a new session: $!", 1);
1294 exit( 1 );
1295 }
1296 $poe_kernel->has_forked() if ($poe_kernel->can('has_forked'));
1297 }
1299 # detect ip and mac address and complete host address
1300 $client_address = $client_ip.":".$client_port;
1301 my $network_interface= &get_interface_for_ip($client_ip);
1302 $client_mac_address= &get_mac($network_interface);
1303 daemon_log("INFO: ip address detected: $client_ip", 1);
1304 daemon_log("INFO: gosa-si-client mac address detected: $client_mac_address", 1);
1307 # import events
1308 my ($error, $result, $tmp_hash) = &import_events($event_dir);
1309 while (my ($module, $mod_event_hash) = each %$tmp_hash) {
1310 while (my ($event_name, $nothing) = each %$mod_event_hash) {
1311 $event_hash->{$event_name} = $module;
1312 }
1313 }
1315 foreach my $log_line (@$result) {
1316 if ($log_line =~ / succeed: /) {
1317 &main::daemon_log("0 DEBUG: $log_line", 7);
1318 } else {
1319 &main::daemon_log("0 ERROR: $log_line", 1);
1320 }
1321 }
1324 # compute hardware checksum
1325 $gotoHardwareChecksum= &generate_hw_digest();
1326 daemon_log("INFO: gotoHardwareChecksum detected: $gotoHardwareChecksum", 1);
1329 # create socket for incoming xml messages
1330 POE::Component::Server::TCP->new(
1331 Alias => 'gosa-si-client',
1332 Port => $client_port,
1333 ClientInput => \&server_input,
1334 );
1335 daemon_log("INFO: start socket for incoming xml messages at port '$client_port' ", 1);
1337 $xml = new XML::Simple();
1338 $default_server_key = $server_key;
1340 # Find servers from config and DNS
1341 &find_servers;
1343 # open fifo for non-gosa-si-client-msgs to gosa-si-server
1344 POSIX::mkfifo("$gosa_si_client_fifo", "0600");
1347 POE::Session->create(
1348 inline_states => {
1349 _start => \&_start,
1350 _stop => \&_stop,
1351 _default => \&_default,
1352 register_at_gosa_si_server => \®ister_at_gosa_si_server,
1354 # trigger periodical tasks
1355 trigger_new_key => \&trigger_new_key,
1356 trigger_logged_in_users_report => \&trigger_logged_in_users_report,
1357 trigger_seen_messages => \&trigger_seen_messages,
1359 # handle records from each defined file differently
1360 fifo_record => \&fifo_got_record,
1362 # handle file resets and errors the same way for each file
1363 file_reset => \&generic_file_reset,
1364 file_error => \&generic_file_error,
1365 }
1366 );
1368 POE::Kernel->run();
1369 exit;