120be07348b44cd0d7747059ad892a50cd3ef64d
1 #!/usr/bin/perl
2 #===============================================================================
3 #
4 # FILE: gosa-server
5 #
6 # USAGE: gosa-si-client
7 #
8 # DESCRIPTION:
9 #
10 # OPTIONS: ---
11 # REQUIREMENTS: libnetaddr-ip-perl
12 # BUGS: ---
13 # NOTES:
14 # AUTHOR: (Andreas Rettenberger), <rettenberger@gonicus.de>
15 # COMPANY:
16 # VERSION: 1.0
17 # CREATED: 12.09.2007 08:54:41 CEST
18 # REVISION: ---
19 #===============================================================================
21 use strict;
22 use warnings;
23 use Getopt::Long;
24 use Config::IniFiles;
25 use POSIX;
26 use Time::HiRes qw( gettimeofday );
28 use POE qw(Component::Server::TCP Wheel::FollowTail Wheel::Run);
29 use IO::Socket::INET;
30 use NetAddr::IP;
31 use Data::Dumper;
32 use Crypt::Rijndael;
33 use GOSA::GosaSupportDaemon;
34 use Digest::MD5 qw(md5_hex md5 md5_base64);
35 use MIME::Base64;
36 use XML::Simple;
37 use File::Basename;
38 use File::Spec;
40 # Workaround: need pure perl to make it work with UTF-8 :-(
41 $XML::Simple::PREFERRED_PARSER= "XML::SAX::PurePerl";
43 my $client_version = '$HeadURL$:$Rev$';
44 my $client_headURL;
45 my $client_revision;
46 my $client_status;
47 my $event_dir = "/usr/lib/gosa-si/client/events";
48 use lib "/usr/lib/gosa-si/client/events";
50 my (%cfg_defaults, $foreground, $verbose, $pid_file, $procid, $pid, $log_file, $fai_logpath);
51 my ($server_ip, $server_port, $server_timeout, $server_domain, $server_key_lifetime);
52 my ($client_port, $ldap_enabled, $ldap_config, $pam_config, $nss_config);
53 my $xml;
54 my $event_hash;
55 my $default_server_key;
56 my @servers;
57 my $gotoHardwareChecksum;
58 my $gosa_si_client_fifo;
59 my %files_to_watch;
60 $verbose= 1;
62 # globalise variables which are used in imported events
63 our $global_kernel;
64 our $cfg_file;
65 our $opts_file;
66 our $server_address;
67 our $client_address;
68 our $client_ip;
69 our $client_mac_address;
70 our $client_dnsname;
71 our $client_force_hostname;
72 our $server_key;
74 # default variables
75 our $REGISTERED = 0;
77 # path to fifo for non-gosa-si-client messages to gosa-si-server
78 $gosa_si_client_fifo = "/var/run/gosa-si-client.socket";
79 %files_to_watch = (fifo => $gosa_si_client_fifo);
81 # in function register_at_gosa_si_server, after which period of seconds a new registration should be tried if a registration was
82 # not successful until now
83 my $delay_set_time = 10;
84 our $prg= basename($0);
86 # all x seconds the client reports logged_in users to gosa-si-server
87 my $trigger_logged_in_users_report_delay = 600;
89 # directory where all log files from installation are stored
90 my $fai_log_dir = "/tmp/fai";
92 %cfg_defaults = (
93 "general" =>
94 {"log-file" => [\$log_file, "/var/run/".$prg.".log"],
95 "pid-file" => [\$pid_file, "/var/run/".$prg.".pid"],
96 "opts-file" => [\$opts_file, "/var/run/".$prg.".opts"],
97 },
98 "client" =>
99 {"port" => [\$client_port, "20083"],
100 "ip" => [\$client_ip, "0.0.0.0"],
101 "mac-address" => [\$client_mac_address, "00:00:00:00:00:00"],
102 "server-domain" => [\$server_domain, ""],
103 "ldap" => [\$ldap_enabled, 1],
104 "ldap-config" => [\$ldap_config, "/etc/ldap/ldap.conf"],
105 "pam-config" => [\$pam_config, "/etc/pam_ldap.conf"],
106 "nss-config" => [\$nss_config, "/etc/libnss-ldap.conf"],
107 "fai-logpath" => [\$fai_logpath, "/var/log/fai/fai.log"],
108 "force-hostname" => [\$client_force_hostname, "false"],
109 },
110 "server" => {
111 "ip" => [\$server_ip, "127.0.0.1"],
112 "port" => [\$server_port, "20081"],
113 "key" => [\$server_key, ""],
114 "timeout" => [\$server_timeout, 10],
115 "key-lifetime" => [\$server_key_lifetime, 600],
116 },
118 );
121 #=== FUNCTIONS = functions =====================================================
123 #=== FUNCTION ================================================================
124 # NAME: check_cmdline_param
125 # PARAMETERS:
126 # RETURNS:
127 # DESCRIPTION:
128 #===============================================================================
129 sub check_cmdline_param () {
130 my $err_config;
131 my $err_counter = 0;
132 if(not defined($cfg_file)) {
133 $cfg_file = "/etc/gosa-si/client.conf";
134 if(! -r $cfg_file) {
135 $err_config = "please specify a config file";
136 $err_counter += 1;
137 }
138 }
139 if( $err_counter > 0 ) {
140 &usage( "", 1 );
141 if( defined( $err_config)) { print STDERR "$err_config\n"}
142 print STDERR "\n";
143 exit( -1 );
144 }
145 }
148 #=== FUNCTION ================================================================
149 # NAME: read_configfile
150 # PARAMETERS: cfg_file - string -
151 # RETURNS:
152 # DESCRIPTION:
153 #===============================================================================
154 sub read_configfile {
155 my ($cfg_file, %cfg_defaults) = @_ ;
156 my $cfg;
157 if( defined( $cfg_file) && ( (-s $cfg_file) > 0 )) {
158 if( -r $cfg_file ) {
159 $cfg = Config::IniFiles->new( -file => $cfg_file );
160 } else {
161 print STDERR "Couldn't read config file!";
162 }
163 } else {
164 $cfg = Config::IniFiles->new() ;
165 }
166 foreach my $section (keys %cfg_defaults) {
167 foreach my $param (keys %{$cfg_defaults{ $section }}) {
168 my $pinfo = $cfg_defaults{ $section }{ $param };
169 ${@$pinfo[ 0 ]} = $cfg->val( $section, $param, @$pinfo[ 1 ] );
170 }
171 }
172 }
175 #=== FUNCTION ================================================================
176 # NAME: check_pid
177 # PARAMETERS:
178 # RETURNS:
179 # DESCRIPTION:
180 #===============================================================================
181 sub check_pid {
182 $pid = -1;
183 # Check, if we are already running
184 if( open(LOCK_FILE, "<$pid_file") ) {
185 $pid = <LOCK_FILE>;
186 if( defined $pid ) {
187 chomp( $pid );
188 if( -f "/proc/$pid/stat" ) {
189 my($stat) = `cat /proc/$pid/stat` =~ m/$pid \((.+)\).*/;
190 if( $0 eq $stat ) {
191 close( LOCK_FILE );
192 exit -1;
193 }
194 }
195 }
196 close( LOCK_FILE );
197 unlink( $pid_file );
198 }
200 # create a syslog msg if it is not to possible to open PID file
201 if (not sysopen(LOCK_FILE, $pid_file, O_WRONLY|O_CREAT|O_EXCL, 0644)) {
202 my($msg) = "Couldn't obtain lockfile '$pid_file' ";
203 if (open(LOCK_FILE, '<', $pid_file)
204 && ($pid = <LOCK_FILE>))
205 {
206 chomp($pid);
207 $msg .= "(PID $pid)\n";
208 } else {
209 $msg .= "(unable to read PID)\n";
210 }
211 if( ! ($foreground) ) {
212 openlog( $0, "cons,pid", "daemon" );
213 syslog( "warning", $msg );
214 closelog();
215 }
216 else {
217 print( STDERR " $msg " );
218 }
219 exit( -1 );
220 }
221 }
224 sub sig_int_handler {
225 my ($signal) = @_;
227 daemon_log("shutting down gosa-si-client", 1);
228 system("kill `ps -C gosa-si-client -o pid=`");
229 }
230 $SIG{INT} = \&sig_int_handler;
233 #=== FUNCTION ================================================================
234 # NAME: logging
235 # PARAMETERS: level - string - default 'info'
236 # msg - string -
237 # facility - string - default 'LOG_DAEMON'
238 # RETURNS:
239 # DESCRIPTION:
240 #===============================================================================
241 sub daemon_log {
242 # log into log_file
243 my( $msg, $level ) = @_;
244 if(not defined $msg) { return }
245 if(not defined $level) { $level = 1 }
246 if(defined $log_file){
247 open(LOG_HANDLE, ">>$log_file");
248 chmod 0600, $log_file;
249 if(not defined open( LOG_HANDLE, ">>$log_file" )) {
250 print STDERR "cannot open $log_file: $!";
251 return
252 }
253 chomp($msg);
254 if($level <= $verbose){
255 my ($seconds, $minutes, $hours, $monthday, $month,
256 $year, $weekday, $yearday, $sommertime) = localtime(time);
257 $hours = $hours < 10 ? $hours = "0".$hours : $hours;
258 $minutes = $minutes < 10 ? $minutes = "0".$minutes : $minutes;
259 $seconds = $seconds < 10 ? $seconds = "0".$seconds : $seconds;
260 my @monthnames = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
261 $month = $monthnames[$month];
262 $monthday = $monthday < 10 ? $monthday = "0".$monthday : $monthday;
263 $year+=1900;
265 my $log_msg = "$month $monthday $hours:$minutes:$seconds $prg $msg\n";
266 print LOG_HANDLE $log_msg;
267 if( $foreground ) {
268 print STDERR $log_msg;
269 }
270 }
271 close( LOG_HANDLE );
272 }
273 }
276 #=== FUNCTION ================================================================
277 # NAME: get_mac
278 # PARAMETERS: interface name (i.e. eth0)
279 # RETURNS: (mac address)
280 # DESCRIPTION: Uses ioctl to get mac address directly from system.
281 #===============================================================================
282 sub get_mac {
283 my $ifreq= shift;
284 my $result;
285 if ($ifreq && length($ifreq) > 0) {
286 if($ifreq eq "all") {
287 if(defined($server_ip)) {
288 $result = &get_local_mac_for_remote_ip($server_ip);
289 }
290 elsif ($client_mac_address && length($client_mac_address) > 0 && !($client_mac_address eq "00:00:00:00:00:00")){
291 $result = &client_mac_address;
292 }
293 else {
294 $result = "00:00:00:00:00:00";
295 }
296 } else {
297 my $SIOCGIFHWADDR= 0x8927; # man 2 ioctl_list
299 # A configured MAC Address should always override a guessed value
300 if ($client_mac_address and length($client_mac_address) > 0 and not($client_mac_address eq "00:00:00:00:00:00")) {
301 $result= $client_mac_address;
302 }
303 else {
304 socket SOCKET, PF_INET, SOCK_DGRAM, getprotobyname('ip')
305 or die "socket: $!";
307 if(ioctl SOCKET, $SIOCGIFHWADDR, $ifreq) {
308 my ($if, $mac)= unpack 'h36 H12', $ifreq;
310 if (length($mac) > 0) {
311 $mac=~ m/^([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])$/;
312 $mac= sprintf("%s:%s:%s:%s:%s:%s", $1, $2, $3, $4, $5, $6);
313 $result = $mac;
314 }
315 }
316 }
317 }
318 }
319 return $result;
320 }
324 #=== FUNCTION ================================================================
325 # NAME: get_local_mac_for_remote_ip
326 # PARAMETERS: none (takes server_ip from global variable)
327 # RETURNS: (ip address from interface that is used for communication)
328 # DESCRIPTION: Uses ioctl to get routing table from system, checks which entry
329 # matches (defaultroute last).
330 #===============================================================================
331 sub get_local_mac_for_remote_ip {
332 my $server_ip= shift;
333 my $result= "00:00:00:00:00:00";
335 if($server_ip =~ /^(\d\d?\d?\.){3}\d\d?\d?$/) {
336 my $PROC_NET_ROUTE= ('/proc/net/route');
338 open(PROC_NET_ROUTE, "<$PROC_NET_ROUTE")
339 or die "Could not open $PROC_NET_ROUTE";
341 my @ifs = <PROC_NET_ROUTE>;
343 close(PROC_NET_ROUTE);
345 # Eat header line
346 shift @ifs;
347 chomp @ifs;
348 foreach my $line(@ifs) {
349 my ($Iface,$Destination,$Gateway,$Flags,$RefCnt,$Use,$Metric,$Mask,$MTU,$Window,$IRTT)=split(/\s/, $line);
350 my $destination;
351 my $mask;
352 my ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Destination);
353 $destination= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
354 ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Mask);
355 $mask= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
356 if(new NetAddr::IP($server_ip)->within(new NetAddr::IP($destination, $mask))) {
357 # destination matches route, save mac and exit
358 $result= &get_mac($Iface);
359 last;
360 }
361 }
362 } else {
363 daemon_log("get_local_mac_for_remote_ip was called with a non-ip parameter: $server_ip", 1);
364 }
365 return $result;
366 }
368 sub get_local_ip_for_remote_ip {
369 my $server_ip= shift;
370 my $result="0.0.0.0";
372 if($server_ip =~ /^(\d\d?\d?\.){3}\d\d?\d?$/) {
373 if($server_ip eq "127.0.0.1") {
374 $result="127.0.0.1";
375 } else {
376 my $PROC_NET_ROUTE= ('/proc/net/route');
378 open(PROC_NET_ROUTE, "<$PROC_NET_ROUTE")
379 or die "Could not open $PROC_NET_ROUTE";
381 my @ifs = <PROC_NET_ROUTE>;
383 close(PROC_NET_ROUTE);
385 # Eat header line
386 shift @ifs;
387 chomp @ifs;
388 foreach my $line(@ifs) {
389 my ($Iface,$Destination,$Gateway,$Flags,$RefCnt,$Use,$Metric,$Mask,$MTU,$Window,$IRTT)=split(/\s/, $line);
390 my $destination;
391 my $mask;
392 my ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Destination);
393 $destination= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
394 ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Mask);
395 $mask= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
396 if(new NetAddr::IP($server_ip)->within(new NetAddr::IP($destination, $mask))) {
397 # destination matches route, save mac and exit
398 $result= &get_ip($Iface);
399 last;
400 }
401 }
402 }
403 } else {
404 daemon_log("get_local_ip_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 # encrypt xml msg
486 my $crypted_msg = &encrypt_msg($msg, $encrypt_key);
488 # opensocket
489 my $socket = &open_socket($address);
490 if( !$socket ) {
491 daemon_log("ERROR: cannot send ".$msg_header."msg to $address , host not reachable", 1);
492 if ($REGISTERED == 1) {
493 $REGISTERED = 0; # if server is not available, cause reregistering
494 daemon_log("INFO: cause reregistering at gosa-si-server", 5);
495 $global_kernel->yield('register_at_gosa_si_server');
497 }
498 $error++;
499 }
501 # send xml msg
502 if( $error == 0 ) {
503 print $socket $crypted_msg."\n";
504 daemon_log("INFO: send ".$msg_header."msg to $address", 5);
505 daemon_log("DEBUG: message:\n$msg", 9);
506 }
508 # close socket in any case
509 if( $socket ) {
510 close $socket;
511 }
513 return $error;
514 }
517 sub write_to_file {
518 my ($string, $file) = @_;
519 my $error = 0;
521 if( not defined $file || not -f $file ) {
522 &main::daemon_log("ERROR: $prg: check '-f file' failed: $file", 1);
523 $error++;
524 }
525 if( not defined $string || 0 == length($string)) {
526 &main::daemon_log("ERROR: $prg: empty string to write to file '$file'", 1);
527 $error++;
528 }
530 if( $error == 0 ) {
532 chomp($string);
534 if (open(FILE, ">> $file")){
535 print FILE $string."\n";
536 close(FILE);
537 }
538 }
540 return;
541 }
544 sub open_socket {
545 my ($PeerAddr, $PeerPort) = @_ ;
546 if(defined($PeerPort)){
547 $PeerAddr = $PeerAddr.":".$PeerPort;
548 }
549 my $socket;
550 $socket = new IO::Socket::INET(PeerAddr => $PeerAddr,
551 Porto => "tcp",
552 Type => SOCK_STREAM,
553 Timeout => 5,
554 );
555 if(not defined $socket) {
556 return;
557 }
558 &daemon_log("DEBUG: open_socket: $PeerAddr", 7);
559 return $socket;
560 }
563 #=== FUNCTION ================================================================
564 # NAME: register_at_server
565 # PARAMETERS:
566 # RETURNS:
567 # DESCRIPTION:
568 #===============================================================================
569 sub register_at_gosa_si_server {
570 my ($kernel) = $_[KERNEL];
571 my $try_to_register = 0;
573 # if client is already registered, stop registration process
574 if ($REGISTERED) {
575 $kernel->delay('register_at_gosa_si_server');
577 # client is not registered, start registration process
578 } else {
579 # clear all other triggered events and wait till registration was successful
580 $kernel->delay('trigger_new_key');
582 # create new passwd and ciphering object for client-server communication
583 $server_key = &create_passwd();
585 my $events = join( ",", keys %{$event_hash} );
586 while(1) {
587 $try_to_register++;
589 # after one complete round through all server, stop trying to register
590 if( $try_to_register > @servers ) { last; }
592 # fetch first gosa-si-server from @servers
593 # append shifted gosa-si-server at the end of @servers, so looking for servers never stop if
594 # a registration never occured
595 my $server = shift(@servers);
596 push( @servers, $server );
598 # Check if our ip is resolvable - if not: don't try to register
599 if(!(defined($server) && $server =~ m/^[0-9\.]*?:.*$/)) {
600 &main::daemon_log("ERROR: Server with address '".defined($server)?$server:""."' is invalid!", 1);
601 if (length(@servers) == 1) {
602 &main::daemon_log("ERROR: No valid servers found!", 1);
603 exit(1);
604 }
605 }
607 # Check if our ip is resolvable - if not: don't try to register
608 my $ip= &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
609 my $dnsname= gethostbyaddr(inet_aton($ip), AF_INET);
610 if(!defined($dnsname)) {
611 if( defined($client_force_hostname) && $client_force_hostname eq "true") {
612 $dnsname = `hostname`;
613 } else {
614 &write_to_file("goto-error-dns:$ip", $fai_logpath);
615 exit(1);
616 }
617 }
619 # create registration msg
620 my $local_ip = &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
621 my $local_mac = &get_local_mac_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
622 my $register_hash = &create_xml_hash("here_i_am", $local_ip.":".$client_port, $server);
623 &add_content2xml_hash($register_hash, "new_passwd", $server_key);
624 &add_content2xml_hash($register_hash, "mac_address", $local_mac);
625 &add_content2xml_hash($register_hash, "events", $events);
626 &add_content2xml_hash($register_hash, "client_status", $client_status);
627 &add_content2xml_hash($register_hash, "client_revision", $client_revision);
628 &add_content2xml_hash($register_hash, "gotoHardwareChecksum", $gotoHardwareChecksum);
629 &add_content2xml_hash($register_hash, "key_lifetime", $server_key_lifetime);
631 # Add $HOSTNAME from ENV if force-hostname is set
632 if( defined($client_force_hostname) && $client_force_hostname eq "true") {
633 if(defined($ENV{HOSTNAME}) && length($ENV{HOSTNAME}) >0 ) {
634 &add_content2xml_hash($register_hash, "force-hostname", $ENV{HOSTNAME});
635 } else {
636 &main::daemon_log("force-hostname was set to true, but no \$HOSTNAME was found in Environment!",0);
637 }
638 }
640 # send xml hash to server with general server passwd
641 my $res = &send_msg_hash_to_target($register_hash, $server, $default_server_key);
643 # if delivery of registration msg succeed
644 if($res eq "0") {
645 # reset try_to_register
646 $try_to_register = 0;
648 # Set fixed client address and mac address
649 $client_ip= &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
650 $client_address= "$client_ip:$client_port";
651 $client_mac_address = $local_mac;
652 $client_dnsname = $dnsname;
653 last;
655 # delivery of registration msg failed
656 } else {
657 # wait 1 sec until trying to register again
658 sleep(1);
659 next;
660 }
662 } # end of while
663 # one circle through all servers finished and no registration succeed
664 if ( $try_to_register >= @servers ) {
665 &write_to_file("gosa-si-no-server-available", $fai_logpath);
666 $kernel->delay_set('register_at_gosa_si_server', $delay_set_time);
668 # delivery of registraion msg succeed, waiting for server response
669 } else {
670 daemon_log("INFO: waiting for msg 'register_at_gosa_si_server'",5);
671 $kernel->delay_set('register_at_gosa_si_server', $delay_set_time);
672 # clear old settings and set it again
673 $kernel->delay('trigger_new_key');
674 $kernel->delay_set('trigger_new_key', $server_key_lifetime);
675 }
677 }
678 return;
679 }
682 sub check_key_and_xml_validity {
683 my ($crypted_msg, $module_key) = @_;
685 my $msg;
686 my $msg_hash;
687 eval{
688 $msg = &decrypt_msg($crypted_msg, $module_key);
689 &main::daemon_log("decrypted_msg: \n$msg", 9);
691 $msg_hash = $xml->XMLin($msg, ForceArray=>1);
693 ##############
694 # check header
695 my $header_l = $msg_hash->{'header'};
696 if( 1 != @{$header_l} ) {
697 die 'no or more headers specified';
698 }
699 my $header = @{$header_l}[0];
700 if( 0 == length $header) {
701 die 'header has length 0';
702 }
704 ##############
705 # check source
706 my $source_l = $msg_hash->{'source'};
707 if( 1 != @{$source_l} ) {
708 die 'no or more than 1 sources specified';
709 }
710 my $source = @{$source_l}[0];
711 if( 0 == length $source) {
712 die 'source has length 0';
713 }
714 unless( $source =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ) {
715 die "source '$source' is neither a complete ip-address with port nor 'GOSA'";
716 }
718 ##############
719 # check target
720 my $target_l = $msg_hash->{'target'};
721 if( 1 != @{$target_l} ) {
722 die 'no or more than 1 targets specified ';
723 }
724 my $target = @{$target_l}[0];
725 if( 0 == length $target) {
726 die 'target has length 0 ';
727 }
728 unless( $target =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ){
729 die "source is neither a complete ip-address with port nor 'GOSA'";
730 }
731 };
732 if($@) {
733 &main::daemon_log("WARNING: do not understand the message or msg is not gosa-si envelope conform:", 5);
734 &main::daemon_log("$@", 8);
735 $msg = undef;
736 $msg_hash = undef;
737 }
739 return ($msg, $msg_hash);
740 }
743 sub check_outgoing_xml_validity {
744 my ($msg) = @_;
746 my $msg_hash;
747 eval{
748 $msg_hash = $xml->XMLin($msg, ForceArray=>1);
750 ##############
751 # check header
752 my $header_l = $msg_hash->{'header'};
753 if( 1 != @{$header_l} ) {
754 die 'no or more than one headers specified';
755 }
756 my $header = @{$header_l}[0];
757 if( 0 == length $header) {
758 die 'header has length 0';
759 }
761 ##############
762 # check source
763 my $source_l = $msg_hash->{'source'};
764 if( 1 != @{$source_l} ) {
765 die 'no or more than 1 sources specified';
766 }
767 my $source = @{$source_l}[0];
768 if( 0 == length $source) {
769 die 'source has length 0';
770 }
771 unless( $source =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ||
772 $source =~ /^GOSA$/i ) {
773 die "source '$source' is neither a complete ip-address with port";
774 }
776 ##############
777 # check target
778 my $target_l = $msg_hash->{'target'};
779 if( 1 != @{$target_l} ) {
780 die "no or more than one targets specified";
781 }
782 foreach my $target (@$target_l) {
783 if( 0 == length $target) {
784 die "target has length 0";
785 }
786 unless( $target =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ) {
787 die "target '$target' is not a complete ip-address with port or a valid target name";
788 }
789 }
790 };
791 if($@) {
792 daemon_log("WARNING: outgoing msg is not gosa-si envelope conform", 5);
793 daemon_log("$@ $msg", 8);
794 $msg_hash = undef;
795 }
796 return ($msg_hash);
797 }
800 sub trigger_new_key {
801 my ($kernel) = $_[KERNEL] ;
803 my $msg = "<xml><header>new_key</header><source>$client_address</source><target>$client_address</target></xml>";
804 &send_msg_to_target($msg, $client_address, $server_key, 'new_key');
806 $kernel->delay_set('trigger_new_key', $server_key_lifetime);
807 }
810 sub trigger_logged_in_users_report {
811 my ($kernel) = $_[KERNEL] ;
813 # just do if client is registered already
814 if( $REGISTERED ) {
815 my $result = qx(/usr/bin/users);
816 my @logged_in_user_list;
817 if( defined $result ) {
818 chomp($result);
819 @logged_in_user_list = split(/\s/, $result);
820 }
822 system("echo 'CURRENTLY_LOGGED_IN ".join(" ", @logged_in_user_list)."' > /var/run/gosa-si-client.socket");
823 $kernel->delay_set('trigger_logged_in_users_report', $trigger_logged_in_users_report_delay);
824 } else {
825 # try it in 10 sec again
826 $kernel->delay_set('trigger_logged_in_users_report', 10);
827 }
828 }
831 sub generic_file_error {
832 my ( $heap, $operation, $errno, $error_string, $wheel_id ) =
833 @_[ HEAP, ARG0, ARG1, ARG2, ARG3 ];
835 my $service = $heap->{services}->{$wheel_id};
836 daemon_log("ERROR: '$service' watcher $operation error $errno: $error_string", 1);
837 daemon_log("ERROR: shutting down '$service' file watcher", 1);
839 delete $heap->{services}->{$wheel_id};
840 delete $heap->{watchers}->{$wheel_id};
841 return;
842 }
845 sub fifo_got_record {
846 my $file_record = $_[ARG0];
847 my $header;
848 my $content = "";
849 daemon_log("DEBUG: fifo got record: $file_record", 7);
851 $file_record =~ /^(\S+)[ ]?([\s\S]+)?$/;
852 if( defined $1 ) {
853 $header = $1;
854 } else {
855 return;
856 }
858 if( defined $2 ) {
859 $content = $2;
860 }
862 my $clmsg_hash = &create_xml_hash("CLMSG_$header", $client_address, $server_address, $content);
863 &add_content2xml_hash($clmsg_hash, "macaddress", $client_mac_address);
864 my $clmsg = &create_xml_string($clmsg_hash);
865 &send_msg_to_target($clmsg, $server_address, $server_key, "CLMSG_$header");
867 # if installation finished, save all log files
868 if ($file_record eq "TASKBEGIN finish") {
869 &save_fai_log($fai_log_dir);
870 }
872 return;
873 }
876 sub save_fai_log {
877 my ($fai_log_dir) = @_ ;
878 my $FAI_DIR;
880 opendir($FAI_DIR, $fai_log_dir);
881 if (not defined $FAI_DIR) {
882 daemon_log("ERROR: can not open directory $fai_log_dir: $!", 1);
883 return;
884 }
886 my @log_files = readdir($FAI_DIR);
887 closedir($FAI_DIR);
888 my @log_list;
890 foreach my $log_file (@log_files) {
891 if( $log_file eq "." || $log_file eq ".." ) { next; }
892 my $log = "log_file:$log_file:";
893 $log_file = File::Spec->catfile( $fai_log_dir, $log_file );
894 open(my $FILE, "<$log_file");
895 if (not defined $FILE ) {
896 daemon_log("ERROR: can not open '$log_file': $!", 1);
897 next;
898 }
899 my @lines = <$FILE>;
900 my $log_string = join("", @lines);
901 $log .= &encode_base64($log_string);
902 push(@log_list, $log);
903 close ($FILE);
904 }
906 my $all_log_string = join("\n", @log_list);
907 my $msg_hash = &create_xml_hash("CLMSG_save_fai_log", $client_address, $server_address, $all_log_string);
908 &add_content2xml_hash($msg_hash, "macaddress", $client_mac_address);
909 my $msg = &create_xml_string($msg_hash);
910 &send_msg_to_target($msg, $server_address, $server_key, "CLMSG_save_fai_log");
912 }
915 sub _start {
916 my ($kernel, $heap) = @_[KERNEL, HEAP];
917 $kernel->alias_set('client_session');
918 $global_kernel = $kernel; # this is used to throw events at each point of the skript
920 # force a registration at a gosa-si-server
921 $kernel->yield('register_at_gosa_si_server');
923 # install all file watcher defined
924 while( my($name, $file) = each %files_to_watch ) {
925 my $watcher = POE::Wheel::FollowTail->new(
926 Filename => $file,
927 InputEvent => $name."_record",
928 # ResetEvent => "file_reset",
929 ErrorEvent => "file_error",
930 );
931 # $heap->{tail} = POE::Wheel::Run->new(
932 # Program => [ "/usr/bin/tail", "-f", $file ],
933 # StdoutEvent => $file_name."_record",
934 # );
935 $heap->{services}->{ $watcher->ID } = $name;
936 $heap->{watchers}->{ $watcher->ID } = $watcher;
937 }
938 $kernel->yield('trigger_logged_in_users_report');
939 }
942 sub _default {
943 daemon_log("ERROR: can not handle incoming msg with header '$_[ARG0]'", 1);
944 return;
945 }
948 sub server_input {
949 my ($kernel, $heap, $input, $wheel) = @_[KERNEL, HEAP, ARG0, ARG1];
950 my $remote_ip = $heap->{'remote_ip'},
951 my $error = 0;
952 my $answer;
955 daemon_log("INFO: Incoming msg from '$remote_ip'", 5);
956 daemon_log("DEBUG: Incoming msg:\n$input\n", 9);
958 my ($msg, $msg_hash) = &check_key_and_xml_validity($input, $server_key);
959 if( (!$msg) || (!$msg_hash) ) {
960 daemon_log("WARNING: Deciphering of incoming msg failed", 3);
961 if($server_address =~ /$remote_ip/) {
962 # got a msg from gosa-si-server which can not be decrypted, may the secrete not up-to-date
963 # cause a reregistering with a new secrete handshake
964 daemon_log("WARNING: Message from gosa-si-server could not be understood, cause reregistering at server", 3);
966 # if client is alread in a registration process, that means not registered, do nothing
967 # if not, cause re-registration
968 if (not $REGISTERED) {
969 &daemon_log("WARNING: gosa-si-client is already in a registration process so ignore this message", 3);
970 } else {
971 $REGISTERED = 0;
972 $kernel->post('client_session', 'register_at_gosa_si_server');
973 }
974 }
975 $error++;
976 }
979 ######################
980 # process incoming msg
981 if( $error == 0 ) {
982 my $header = @{$msg_hash->{header}}[0];
983 my $source = @{$msg_hash->{source}}[0];
985 if( exists $event_hash->{$header} ) {
987 # a event exists with the header as name
988 daemon_log("INFO: found event '$header' at event-module '".$event_hash->{$header}."'", 5);
989 no strict 'refs';
990 $answer = &{$event_hash->{$header}."::$header"}($msg, $msg_hash);
991 }
992 else {
993 daemon_log("WARNING: no event '$header' found in event modules under $event_dir", 3);
994 }
995 }
997 ########
998 # answer
999 if( $answer ) {
1001 #check gosa-si envelope validity
1002 my $answer_hash = &check_outgoing_xml_validity($answer);
1004 if( $answer_hash ) {
1005 # answer is valid
1007 # preprocessing
1008 if( $answer =~ "<header>registered</header>") {
1009 # set registered flag to true to stop sending further registered msgs
1010 $REGISTERED = 1;
1011 }
1012 else {
1013 $answer =~ /<header>(\S+)<\/header>/;
1014 &send_msg_to_target($answer, $server_address, $server_key, $1);
1015 }
1017 # postprocessing
1018 if( $answer =~ "<header>new_key</header>") {
1019 # set new key to global variable
1020 $answer =~ /<new_key>(\S*?)<\/new_key>/;
1021 my $new_key = $1;
1022 $server_key = $new_key;
1023 }
1024 }
1026 }
1028 return;
1029 }
1032 #==== MAIN = main ==============================================================
1033 # parse commandline options
1034 Getopt::Long::Configure( "bundling" );
1035 GetOptions("h|help" => \&usage,
1036 "c|config=s" => \$cfg_file,
1037 "f|foreground" => \$foreground,
1038 "v|verbose+" => \$verbose,
1039 );
1041 # read and set config parameters
1042 &check_cmdline_param ;
1043 &read_configfile($cfg_file, %cfg_defaults);
1044 &check_pid;
1047 # forward error messages to logfile
1048 if ( ! $foreground ) {
1049 open( STDIN, '+>/dev/null' );
1050 open( STDOUT, '+>&STDIN' );
1051 open( STDERR, '+>&STDIN' );
1052 }
1054 # Just fork, if we are not in foreground mode
1055 if( ! $foreground ) {
1056 chdir '/' or die "Can't chdir to /: $!";
1057 $pid = fork;
1058 setsid or die "Can't start a new session: $!";
1059 umask 0;
1060 } else {
1061 $pid = $$;
1062 }
1064 # Do something useful - put our PID into the pid_file
1065 if( 0 != $pid ) {
1066 open( LOCK_FILE, ">$pid_file" );
1067 print LOCK_FILE "$pid\n";
1068 close( LOCK_FILE );
1069 if( !$foreground ) {
1070 exit( 0 )
1071 };
1072 }
1074 # parse head url and revision from svn
1075 my $client_status_hash = { 'developmental'=>'revision', 'stable'=>'release'};
1076 $client_version =~ /^\$HeadURL: (\S+) \$:\$Rev: (\d+) \$$/;
1077 $client_headURL = defined $1 ? $1 : 'unknown' ;
1078 $client_revision = defined $2 ? $2 : 'unknown' ;
1079 if ($client_headURL =~ /\/tag\// ||
1080 $client_headURL =~ /\/branches\// ) {
1081 $client_status = "stable";
1082 } else {
1083 $client_status = "developmental" ;
1084 }
1086 daemon_log(" ", 1);
1087 daemon_log("$prg started!", 1);
1088 daemon_log("INFO: status: $client_status", 1);
1089 daemon_log("INFO: ".$client_status_hash->{$client_status}.": $client_revision", 1);
1091 # delete old DBsqlite lock files
1092 system('rm -f /tmp/gosa_si_lock*gosa-si-client*');
1094 # detect ip and mac address and complete host address
1095 $client_address = $client_ip.":".$client_port;
1096 my $network_interface= &get_interface_for_ip($client_ip);
1097 $client_mac_address= &get_mac($network_interface);
1098 daemon_log("INFO: ip address detected: $client_ip", 1);
1099 daemon_log("INFO: gosa-si-client mac address detected: $client_mac_address", 1);
1102 # import events
1103 my ($error, $result, $tmp_hash) = &import_events($event_dir);
1104 $event_hash = $tmp_hash;
1105 if ($error == 0) {
1106 foreach my $log_line (@$result) {
1107 daemon_log("DEBUG: $log_line", 7);
1108 }
1109 } else {
1110 foreach my $log_line (@$result) {
1111 daemon_log("ERROR: $log_line", 1);
1112 }
1113 }
1116 # compute hardware checksum
1117 $gotoHardwareChecksum= &generate_hw_digest();
1118 daemon_log("INFO: gotoHardwareChecksum detected: $gotoHardwareChecksum", 1);
1121 # create socket for incoming xml messages
1122 POE::Component::Server::TCP->new(
1123 Alias => 'gosa-si-client',
1124 Port => $client_port,
1125 ClientInput => \&server_input,
1126 );
1127 daemon_log("INFO: start socket for incoming xml messages at port '$client_port' ", 1);
1130 # prepare variables
1131 if( inet_aton($server_ip) ){ $server_ip = inet_ntoa(inet_aton($server_ip)); }
1132 ############################################################
1133 # to change
1134 #if( $server_ip eq "127.0.1.1" ) { $server_ip = "127.0.0.1" }
1135 ############################################################
1136 if (defined $server_ip && defined $server_port) {
1137 $server_address = $server_ip.":".$server_port;
1138 }
1139 $xml = new XML::Simple();
1140 $default_server_key = $server_key;
1143 # add gosa-si-server address from config file at first position of server list
1144 my $server_check_cfg = Config::IniFiles->new( -file => $cfg_file );
1145 my $server_check = (defined($server_check_cfg))?$server_check_cfg->val( "server", "ip"):undef;
1146 if( defined $server_check ) {
1147 unshift(@servers, $server_address);
1148 my $servers_string = join(", ", @servers);
1149 daemon_log("INFO: found servers in configuration file: $servers_string", 5);
1150 } else {
1151 my @tmp_servers;
1152 if ( !$server_domain) {
1153 # Try our DNS Searchlist
1154 for my $domain(get_dns_domains()) {
1155 chomp($domain);
1156 my @tmp_domains= &get_server_addresses($domain);
1157 if(@tmp_domains) {
1158 for my $tmp_server(@tmp_domains) {
1159 push @tmp_servers, $tmp_server;
1160 }
1161 }
1162 }
1163 if(@tmp_servers && length(@tmp_servers)==0) {
1164 daemon_log("ERROR: please specify a gosa-si-server address or a domain in config file", 1);
1165 kill 2, $$;
1166 }
1167 } else {
1168 @tmp_servers = &get_server_addresses($server_domain);
1169 if( 0 == @tmp_servers ) {
1170 daemon_log("ERROR: no gosa-si-server found in DNS for domain '$server_domain'",1);
1171 daemon_log("ERROR: please specify a gosa-si-server address or a domain in config file", 1);
1172 kill 2, $$;
1173 }
1174 }
1176 foreach my $server (@tmp_servers) {
1177 unshift(@servers, $server);
1178 }
1179 my $servers_string = join(", ", @servers);
1180 daemon_log("INFO: found servers in DNS: $servers_string", 5);
1181 }
1184 # open fifo for non-gosa-si-client-msgs to gosa-si-server
1185 POSIX::mkfifo("$gosa_si_client_fifo", "0600");
1188 POE::Session->create(
1189 inline_states => {
1190 _start => \&_start,
1191 _default => \&_default,
1192 register_at_gosa_si_server => \®ister_at_gosa_si_server,
1194 # trigger periodical tasks
1195 trigger_new_key => \&trigger_new_key,
1196 trigger_logged_in_users_report => \&trigger_logged_in_users_report,
1198 # handle records from each defined file differently
1199 fifo_record => \&fifo_got_record,
1201 # handle file resets and errors the same way for each file
1202 file_reset => \&generic_file_reset,
1203 file_error => \&generic_file_error,
1204 }
1205 );
1207 POE::Kernel->run();
1208 exit;