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 Net::DNS; # no longer used because function moved to GosaSupportDaemon.pm : rettenbe : 16.05.2008
38 use File::Basename;
39 use File::Spec;
41 # Workaround: need pure perl to make it work with UTF-8 :-(
42 $XML::Simple::PREFERRED_PARSER= "XML::SAX::PurePerl";
44 my $client_version = '$HeadURL$:$Rev$';
45 my $client_headURL;
46 my $client_revision;
47 my $client_status;
48 my $event_dir = "/usr/lib/gosa-si/client/events";
49 use lib "/usr/lib/gosa-si/client/events";
51 my (%cfg_defaults, $foreground, $verbose, $pid_file, $procid, $pid, $log_file, $fai_logpath);
52 my ($server_ip, $server_port, $server_timeout, $server_domain, $server_key_lifetime);
53 my ($client_port, $ldap_enabled, $ldap_config, $pam_config, $nss_config);
54 my $xml;
55 my $event_hash;
56 my $default_server_key;
57 my @servers;
58 my $gotoHardwareChecksum;
59 my $gosa_si_client_fifo;
60 my %files_to_watch;
61 $verbose= 1;
63 # globalise variables which are used in imported events
64 our $global_kernel;
65 our $cfg_file;
66 our $opts_file;
67 our $server_address;
68 our $client_address;
69 our $client_ip;
70 our $client_mac_address;
71 our $client_dnsname;
72 our $client_force_hostname;
73 our $server_key;
75 # default variables
76 our $REGISTERED = 0;
78 # path to fifo for non-gosa-si-client messages to gosa-si-server
79 $gosa_si_client_fifo = "/var/run/gosa-si-client.socket";
80 %files_to_watch = (fifo => $gosa_si_client_fifo);
82 # in function register_at_gosa_si_server, after which period of seconds a new registration should be tried if a registration was
83 # not successful until now
84 my $delay_set_time = 10;
85 our $prg= basename($0);
87 # all x seconds the client reports logged_in users to gosa-si-server
88 my $trigger_logged_in_users_report_delay = 600;
90 # directory where all log files from installation are stored
91 my $fai_log_dir = "/tmp/fai";
93 %cfg_defaults = (
94 "general" =>
95 {"log-file" => [\$log_file, "/var/run/".$prg.".log"],
96 "pid-file" => [\$pid_file, "/var/run/".$prg.".pid"],
97 "opts-file" => [\$opts_file, "/var/run/".$prg.".opts"],
98 },
99 "client" =>
100 {"port" => [\$client_port, "20083"],
101 "ip" => [\$client_ip, "0.0.0.0"],
102 "mac-address" => [\$client_mac_address, "00:00:00:00:00:00"],
103 "server-domain" => [\$server_domain, ""],
104 "ldap" => [\$ldap_enabled, 1],
105 "ldap-config" => [\$ldap_config, "/etc/ldap/ldap.conf"],
106 "pam-config" => [\$pam_config, "/etc/pam_ldap.conf"],
107 "nss-config" => [\$nss_config, "/etc/libnss-ldap.conf"],
108 "fai-logpath" => [\$fai_logpath, "/var/log/fai/fai.log"],
109 "force-hostname" => [\$client_force_hostname, "false"],
110 },
111 "server" => {
112 "ip" => [\$server_ip, "127.0.0.1"],
113 "port" => [\$server_port, "20081"],
114 "key" => [\$server_key, ""],
115 "timeout" => [\$server_timeout, 10],
116 "key-lifetime" => [\$server_key_lifetime, 600],
117 },
119 );
122 #=== FUNCTIONS = functions =====================================================
124 #=== FUNCTION ================================================================
125 # NAME: check_cmdline_param
126 # PARAMETERS:
127 # RETURNS:
128 # DESCRIPTION:
129 #===============================================================================
130 sub check_cmdline_param () {
131 my $err_config;
132 my $err_counter = 0;
133 if(not defined($cfg_file)) {
134 $cfg_file = "/etc/gosa-si/client.conf";
135 if(! -r $cfg_file) {
136 $err_config = "please specify a config file";
137 $err_counter += 1;
138 }
139 }
140 if( $err_counter > 0 ) {
141 &usage( "", 1 );
142 if( defined( $err_config)) { print STDERR "$err_config\n"}
143 print STDERR "\n";
144 exit( -1 );
145 }
146 }
149 #=== FUNCTION ================================================================
150 # NAME: read_configfile
151 # PARAMETERS: cfg_file - string -
152 # RETURNS:
153 # DESCRIPTION:
154 #===============================================================================
155 sub read_configfile {
156 my ($cfg_file, %cfg_defaults) = @_ ;
157 my $cfg;
158 if( defined( $cfg_file) && ( (-s $cfg_file) > 0 )) {
159 if( -r $cfg_file ) {
160 $cfg = Config::IniFiles->new( -file => $cfg_file );
161 } else {
162 print STDERR "Couldn't read config file!";
163 }
164 } else {
165 $cfg = Config::IniFiles->new() ;
166 }
167 foreach my $section (keys %cfg_defaults) {
168 foreach my $param (keys %{$cfg_defaults{ $section }}) {
169 my $pinfo = $cfg_defaults{ $section }{ $param };
170 ${@$pinfo[ 0 ]} = $cfg->val( $section, $param, @$pinfo[ 1 ] );
171 }
172 }
173 }
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 $log_file){
248 open(LOG_HANDLE, ">>$log_file");
249 chmod 0600, $log_file;
250 if(not defined open( LOG_HANDLE, ">>$log_file" )) {
251 print STDERR "cannot open $log_file: $!";
252 return
253 }
254 chomp($msg);
255 if($level <= $verbose){
256 my ($seconds, $minutes, $hours, $monthday, $month,
257 $year, $weekday, $yearday, $sommertime) = localtime(time);
258 $hours = $hours < 10 ? $hours = "0".$hours : $hours;
259 $minutes = $minutes < 10 ? $minutes = "0".$minutes : $minutes;
260 $seconds = $seconds < 10 ? $seconds = "0".$seconds : $seconds;
261 my @monthnames = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
262 $month = $monthnames[$month];
263 $monthday = $monthday < 10 ? $monthday = "0".$monthday : $monthday;
264 $year+=1900;
266 my $log_msg = "$month $monthday $hours:$minutes:$seconds $prg $msg\n";
267 print LOG_HANDLE $log_msg;
268 if( $foreground ) {
269 print STDERR $log_msg;
270 }
271 }
272 close( LOG_HANDLE );
273 }
274 }
277 #=== FUNCTION ================================================================
278 # NAME: get_mac
279 # PARAMETERS: interface name (i.e. eth0)
280 # RETURNS: (mac address)
281 # DESCRIPTION: Uses ioctl to get mac address directly from system.
282 #===============================================================================
283 sub get_mac {
284 my $ifreq= shift;
285 my $result;
286 if ($ifreq && length($ifreq) > 0) {
287 if($ifreq eq "all") {
288 if(defined($server_ip)) {
289 $result = &get_local_mac_for_remote_ip($server_ip);
290 }
291 elsif ($client_mac_address && length($client_mac_address) > 0 && !($client_mac_address eq "00:00:00:00:00:00")){
292 $result = &client_mac_address;
293 }
294 else {
295 $result = "00:00:00:00:00:00";
296 }
297 } else {
298 my $SIOCGIFHWADDR= 0x8927; # man 2 ioctl_list
300 # A configured MAC Address should always override a guessed value
301 if ($client_mac_address and length($client_mac_address) > 0 and not($client_mac_address eq "00:00:00:00:00:00")) {
302 $result= $client_mac_address;
303 }
304 else {
305 socket SOCKET, PF_INET, SOCK_DGRAM, getprotobyname('ip')
306 or die "socket: $!";
308 if(ioctl SOCKET, $SIOCGIFHWADDR, $ifreq) {
309 my ($if, $mac)= unpack 'h36 H12', $ifreq;
311 if (length($mac) > 0) {
312 $mac=~ m/^([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])$/;
313 $mac= sprintf("%s:%s:%s:%s:%s:%s", $1, $2, $3, $4, $5, $6);
314 $result = $mac;
315 }
316 }
317 }
318 }
319 }
320 return $result;
321 }
325 #=== FUNCTION ================================================================
326 # NAME: get_local_mac_for_remote_ip
327 # PARAMETERS: none (takes server_ip from global variable)
328 # RETURNS: (ip address from interface that is used for communication)
329 # DESCRIPTION: Uses ioctl to get routing table from system, checks which entry
330 # matches (defaultroute last).
331 #===============================================================================
332 sub get_local_mac_for_remote_ip {
333 my $server_ip= shift;
334 my $result= "00:00:00:00:00:00";
336 if($server_ip =~ /^(\d\d?\d?\.){3}\d\d?\d?$/) {
337 my $PROC_NET_ROUTE= ('/proc/net/route');
339 open(PROC_NET_ROUTE, "<$PROC_NET_ROUTE")
340 or die "Could not open $PROC_NET_ROUTE";
342 my @ifs = <PROC_NET_ROUTE>;
344 close(PROC_NET_ROUTE);
346 # Eat header line
347 shift @ifs;
348 chomp @ifs;
349 foreach my $line(@ifs) {
350 my ($Iface,$Destination,$Gateway,$Flags,$RefCnt,$Use,$Metric,$Mask,$MTU,$Window,$IRTT)=split(/\s/, $line);
351 my $destination;
352 my $mask;
353 my ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Destination);
354 $destination= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
355 ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Mask);
356 $mask= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
357 if(new NetAddr::IP($server_ip)->within(new NetAddr::IP($destination, $mask))) {
358 # destination matches route, save mac and exit
359 $result= &get_mac($Iface);
360 last;
361 }
362 }
363 } else {
364 daemon_log("get_local_mac_for_remote_ip was called with a non-ip parameter: $server_ip", 1);
365 }
366 return $result;
367 }
369 sub get_local_ip_for_remote_ip {
370 my $server_ip= shift;
371 my $result="0.0.0.0";
373 if($server_ip =~ /^(\d\d?\d?\.){3}\d\d?\d?$/) {
374 if($server_ip eq "127.0.0.1") {
375 $result="127.0.0.1";
376 } else {
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 $result= &get_ip($Iface);
400 last;
401 }
402 }
403 }
404 } else {
405 daemon_log("get_local_ip_for_remote_ip was called with a non-ip parameter: $server_ip", 1);
406 }
407 return $result;
408 }
411 sub generate_hw_digest {
412 my $hw_data;
413 foreach my $line (split /\n/, `cat /proc/bus/pci/devices`) {
414 $hw_data.= sprintf "%s", $line =~ /[^\s]+\s([^\s]+)\s.*/;
415 }
416 return(md5_base64($hw_data));
417 }
420 # moved to GosaSupportDaemon: rettenbe, 19.05.2008
421 #sub create_passwd {
422 # my $new_passwd = "";
423 # for(my $i=0; $i<31; $i++) {
424 # $new_passwd .= ("a".."z","A".."Z",0..9)[int(rand(62))]
425 # }
426 #
427 # return $new_passwd;
428 #}
431 sub create_ciphering {
432 my ($passwd) = @_;
433 if((!defined($passwd)) || length($passwd)==0) {
434 $passwd = "";
435 }
436 $passwd = substr(md5_hex("$passwd") x 32, 0, 32);
437 my $iv = substr(md5_hex('GONICUS GmbH'),0, 16);
438 my $my_cipher = Crypt::Rijndael->new($passwd , Crypt::Rijndael::MODE_CBC());
439 $my_cipher->set_iv($iv);
440 return $my_cipher;
441 }
444 sub encrypt_msg {
445 my ($msg, $key) = @_;
446 my $my_cipher = &create_ciphering($key);
447 my $len;
448 {
449 use bytes;
450 $len= 16-length($msg)%16;
451 }
452 $msg = "\0"x($len).$msg;
453 $msg = $my_cipher->encrypt($msg);
454 chomp($msg = &encode_base64($msg));
455 # there are no newlines allowed inside msg
456 $msg=~ s/\n//g;
457 return $msg;
458 }
461 sub decrypt_msg {
463 my ($msg, $key) = @_ ;
464 $msg = &decode_base64($msg);
465 my $my_cipher = &create_ciphering($key);
466 $msg = $my_cipher->decrypt($msg);
467 $msg =~ s/\0*//g;
468 return $msg;
469 }
472 # moved to GosaSupportDaemon: rettenbe: 16.05.2008
473 #sub get_server_addresses {
474 # my $domain= shift;
475 # my @result;
476 #
477 # my $error = 0;
478 # my $res = Net::DNS::Resolver->new;
479 # my $query = $res->send("_gosa-si._tcp.".$domain, "SRV");
480 # my @hits;
481 #
482 # if ($query) {
483 # foreach my $rr ($query->answer) {
484 # push(@hits, $rr->target.":".$rr->port);
485 # }
486 # }
487 # else {
488 # #warn "query failed: ", $res->errorstring, "\n";
489 # $error++;
490 # }
491 #
492 # if( $error == 0 ) {
493 # foreach my $hit (@hits) {
494 # my ($hit_name, $hit_port) = split(/:/, $hit);
495 # chomp($hit_name);
496 # chomp($hit_port);
497 #
498 # my $address_query = $res->send($hit_name);
499 # if( 1 == length($address_query->answer) ) {
500 # foreach my $rr ($address_query->answer) {
501 # push(@result, $rr->address.":".$hit_port);
502 # }
503 # }
504 # }
505 # }
506 #
507 # return @result;
508 #}
511 #=== FUNCTION ================================================================
512 # NAME: send_msg_hash_to_target
513 # PARAMETERS: msg_hash - hash - xml_hash created with function create_xml_hash
514 # PeerAddr string - socket address to send msg
515 # PeerPort string - socket port, if not included in socket address
516 # RETURNS: nothing
517 # DESCRIPTION: ????
518 #===============================================================================
519 sub send_msg_hash_to_target {
520 my ($msg_hash, $address, $encrypt_key) = @_ ;
521 my $msg = &create_xml_string($msg_hash);
522 my $header = @{$msg_hash->{'header'}}[0];
523 my $error = &send_msg_to_target($msg, $address, $encrypt_key, $header);
525 return $error;
526 }
529 sub send_msg_to_target {
530 my ($msg, $address, $encrypt_key, $msg_header) = @_ ;
531 my $error = 0;
533 if( $msg_header ) { $msg_header = "'$msg_header'-"; }
534 else { $msg_header = ""; }
536 # encrypt xml msg
537 my $crypted_msg = &encrypt_msg($msg, $encrypt_key);
539 # opensocket
540 my $socket = &open_socket($address);
541 if( !$socket ) {
542 daemon_log("ERROR: cannot send ".$msg_header."msg to $address , host not reachable", 1);
543 if ($REGISTERED == 1) {
544 $REGISTERED = 0; # if server is not available, cause reregistering
545 daemon_log("INFO: cause reregistering at gosa-si-server", 5);
546 $global_kernel->yield('register_at_gosa_si_server');
548 }
549 $error++;
550 }
552 # send xml msg
553 if( $error == 0 ) {
554 print $socket $crypted_msg."\n";
555 daemon_log("INFO: send ".$msg_header."msg to $address", 5);
556 daemon_log("DEBUG: message:\n$msg", 9);
557 }
559 # close socket in any case
560 if( $socket ) {
561 close $socket;
562 }
564 return $error;
565 }
568 sub write_to_file {
569 my ($string, $file) = @_;
570 my $error = 0;
572 if( not defined $file || not -f $file ) {
573 &main::daemon_log("ERROR: $prg: check '-f file' failed: $file", 1);
574 $error++;
575 }
576 if( not defined $string || 0 == length($string)) {
577 &main::daemon_log("ERROR: $prg: empty string to write to file '$file'", 1);
578 $error++;
579 }
581 if( $error == 0 ) {
583 chomp($string);
585 if (open(FILE, ">> $file")){
586 print FILE $string."\n";
587 close(FILE);
588 }
589 }
591 return;
592 }
595 sub open_socket {
596 my ($PeerAddr, $PeerPort) = @_ ;
597 if(defined($PeerPort)){
598 $PeerAddr = $PeerAddr.":".$PeerPort;
599 }
600 my $socket;
601 $socket = new IO::Socket::INET(PeerAddr => $PeerAddr,
602 Porto => "tcp",
603 Type => SOCK_STREAM,
604 Timeout => 5,
605 );
606 if(not defined $socket) {
607 return;
608 }
609 &daemon_log("DEBUG: open_socket: $PeerAddr", 7);
610 return $socket;
611 }
614 #=== FUNCTION ================================================================
615 # NAME: register_at_server
616 # PARAMETERS:
617 # RETURNS:
618 # DESCRIPTION:
619 #===============================================================================
620 sub register_at_gosa_si_server {
621 my ($kernel) = $_[KERNEL];
622 my $try_to_register = 0;
624 # if client is already registered, stop registration process
625 if ($REGISTERED) {
626 $kernel->delay('register_at_gosa_si_server');
628 # client is not registered, start registration process
629 } else {
630 # clear all other triggered events and wait till registration was successful
631 $kernel->delay('trigger_new_key');
633 # create new passwd and ciphering object for client-server communication
634 $server_key = &create_passwd();
636 my $events = join( ",", keys %{$event_hash} );
637 while(1) {
638 $try_to_register++;
640 # after one complete round through all server, stop trying to register
641 if( $try_to_register > @servers ) { last; }
643 # fetch first gosa-si-server from @servers
644 # append shifted gosa-si-server at the end of @servers, so looking for servers never stop if
645 # a registration never occured
646 my $server = shift(@servers);
647 push( @servers, $server );
649 # Check if our ip is resolvable - if not: don't try to register
650 if(!(defined($server) && $server =~ m/^[0-9\.]*?:.*$/)) {
651 &main::daemon_log("ERROR: Server with address '".defined($server)?$server:""."' is invalid!", 1);
652 if (length(@servers) == 1) {
653 &main::daemon_log("ERROR: No valid servers found!", 1);
654 exit(1);
655 }
656 }
658 # Check if our ip is resolvable - if not: don't try to register
659 my $ip= &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
660 my $dnsname= gethostbyaddr(inet_aton($ip), AF_INET);
661 if(!defined($dnsname)) {
662 &write_to_file("goto-error-dns:$ip", $fai_logpath);
663 exit(1);
664 }
666 # create registration msg
667 my $local_ip = &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
668 my $local_mac = &get_local_mac_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
669 my $register_hash = &create_xml_hash("here_i_am", $local_ip.":".$client_port, $server);
670 &add_content2xml_hash($register_hash, "new_passwd", $server_key);
671 &add_content2xml_hash($register_hash, "mac_address", $local_mac);
672 &add_content2xml_hash($register_hash, "events", $events);
673 &add_content2xml_hash($register_hash, "client_status", $client_status);
674 &add_content2xml_hash($register_hash, "client_revision", $client_revision);
675 &add_content2xml_hash($register_hash, "gotoHardwareChecksum", $gotoHardwareChecksum);
676 &add_content2xml_hash($register_hash, "key_lifetime", $server_key_lifetime);
678 # Add $HOSTNAME from ENV if force-hostname is set
679 if( defined($client_force_hostname) && $client_force_hostname eq "true") {
680 if(defined($ENV{HOSTNAME}) && length($ENV{HOSTNAME}) >0 ) {
681 &add_content2xml_hash($register_hash, "force-hostname", $ENV{HOSTNAME});
682 } else {
683 &main::daemon_log("force-hostname was set to true, but no \$HOSTNAME was found in Environment!",0);
684 }
685 }
687 # send xml hash to server with general server passwd
688 my $res = &send_msg_hash_to_target($register_hash, $server, $default_server_key);
690 # if delivery of registration msg succeed
691 if($res eq "0") {
692 # reset try_to_register
693 $try_to_register = 0;
695 # Set fixed client address and mac address
696 $client_ip= &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
697 $client_address= "$client_ip:$client_port";
698 $client_mac_address = $local_mac;
699 $client_dnsname = $dnsname;
700 last;
702 # delivery of registration msg failed
703 } else {
704 # wait 1 sec until trying to register again
705 sleep(1);
706 next;
707 }
709 } # end of while
710 # one circle through all servers finished and no registration succeed
711 if ( $try_to_register >= @servers ) {
712 &write_to_file("gosa-si-no-server-available", $fai_logpath);
713 $kernel->delay_set('register_at_gosa_si_server', $delay_set_time);
715 # delivery of registraion msg succeed, waiting for server response
716 } else {
717 daemon_log("INFO: waiting for msg 'register_at_gosa_si_server'",5);
718 $kernel->delay_set('register_at_gosa_si_server', $delay_set_time);
719 # clear old settings and set it again
720 $kernel->delay('trigger_new_key');
721 $kernel->delay_set('trigger_new_key', $server_key_lifetime);
722 }
724 }
725 return;
726 }
729 sub check_key_and_xml_validity {
730 my ($crypted_msg, $module_key) = @_;
732 my $msg;
733 my $msg_hash;
734 eval{
735 $msg = &decrypt_msg($crypted_msg, $module_key);
736 &main::daemon_log("decrypted_msg: \n$msg", 9);
738 $msg_hash = $xml->XMLin($msg, ForceArray=>1);
740 ##############
741 # check header
742 my $header_l = $msg_hash->{'header'};
743 if( 1 != @{$header_l} ) {
744 die 'no or more headers specified';
745 }
746 my $header = @{$header_l}[0];
747 if( 0 == length $header) {
748 die 'header has length 0';
749 }
751 ##############
752 # check source
753 my $source_l = $msg_hash->{'source'};
754 if( 1 != @{$source_l} ) {
755 die 'no or more than 1 sources specified';
756 }
757 my $source = @{$source_l}[0];
758 if( 0 == length $source) {
759 die 'source has length 0';
760 }
761 unless( $source =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ) {
762 die "source '$source' is neither a complete ip-address with port nor 'GOSA'";
763 }
765 ##############
766 # check target
767 my $target_l = $msg_hash->{'target'};
768 if( 1 != @{$target_l} ) {
769 die 'no or more than 1 targets specified ';
770 }
771 my $target = @{$target_l}[0];
772 if( 0 == length $target) {
773 die 'target has length 0 ';
774 }
775 unless( $target =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ){
776 die "source is neither a complete ip-address with port nor 'GOSA'";
777 }
778 };
779 if($@) {
780 &main::daemon_log("WARNING: do not understand the message or msg is not gosa-si envelope conform:", 5);
781 &main::daemon_log("$@", 8);
782 $msg = undef;
783 $msg_hash = undef;
784 }
786 return ($msg, $msg_hash);
787 }
790 sub check_outgoing_xml_validity {
791 my ($msg) = @_;
793 my $msg_hash;
794 eval{
795 $msg_hash = $xml->XMLin($msg, ForceArray=>1);
797 ##############
798 # check header
799 my $header_l = $msg_hash->{'header'};
800 if( 1 != @{$header_l} ) {
801 die 'no or more than one headers specified';
802 }
803 my $header = @{$header_l}[0];
804 if( 0 == length $header) {
805 die 'header has length 0';
806 }
808 ##############
809 # check source
810 my $source_l = $msg_hash->{'source'};
811 if( 1 != @{$source_l} ) {
812 die 'no or more than 1 sources specified';
813 }
814 my $source = @{$source_l}[0];
815 if( 0 == length $source) {
816 die 'source has length 0';
817 }
818 unless( $source =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ||
819 $source =~ /^GOSA$/i ) {
820 die "source '$source' is neither a complete ip-address with port";
821 }
823 ##############
824 # check target
825 my $target_l = $msg_hash->{'target'};
826 if( 1 != @{$target_l} ) {
827 die "no or more than one targets specified";
828 }
829 foreach my $target (@$target_l) {
830 if( 0 == length $target) {
831 die "target has length 0";
832 }
833 unless( $target =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ) {
834 die "target '$target' is not a complete ip-address with port or a valid target name";
835 }
836 }
837 };
838 if($@) {
839 daemon_log("WARNING: outgoing msg is not gosa-si envelope conform", 5);
840 daemon_log("$@ $msg", 8);
841 $msg_hash = undef;
842 }
843 return ($msg_hash);
844 }
847 #sub import_events {
848 #
849 # if (not -e $event_dir) {
850 # daemon_log("ERROR: cannot find directory or directory is not readable: $event_dir", 1);
851 # }
852 # opendir (DIR, $event_dir) or die "ERROR while loading gosa-si-events from directory $event_dir : $!\n";
853 #
854 # while (defined (my $event = readdir (DIR))) {
855 # if( $event eq "." || $event eq ".." ) { next; }
856 # daemon_log("INFO: found event module: $event", 5);
857 # eval{ require $event; };
858 # if( $@ ) {
859 # daemon_log("ERROR: import of event module '$event' failed", 1);
860 # daemon_log("$@", 1);
861 # next;
862 # }
863 #
864 # $event =~ /(\S*?).pm$/;
865 # my $event_module = $1;
866 # my $events_l = eval( $1."::get_events()") ;
867 # foreach my $event_name (@{$events_l}) {
868 # $event_hash->{$event_name} = $event_module;
869 # }
870 #
871 # }
872 #
873 # my @all_events = keys %$event_hash;
874 # my $all_events_string = join(", ", @all_events);
875 #
876 # daemon_log("INFO: imported events: $all_events_string", 5);
877 #}
879 sub trigger_new_key {
880 my ($kernel) = $_[KERNEL] ;
882 my $msg = "<xml><header>new_key</header><source>$client_address</source><target>$client_address</target></xml>";
883 &send_msg_to_target($msg, $client_address, $server_key, 'new_key');
885 $kernel->delay_set('trigger_new_key', $server_key_lifetime);
886 }
889 sub trigger_logged_in_users_report {
890 my ($kernel) = $_[KERNEL] ;
892 # just do if client is registered already
893 if( $REGISTERED ) {
894 my $result = qx(/usr/bin/users);
895 my @logged_in_user_list;
896 if( defined $result ) {
897 chomp($result);
898 @logged_in_user_list = split(/\s/, $result);
899 }
901 system("echo 'CURRENTLY_LOGGED_IN ".join(" ", @logged_in_user_list)."' > /var/run/gosa-si-client.socket");
902 $kernel->delay_set('trigger_logged_in_users_report', $trigger_logged_in_users_report_delay);
903 } else {
904 # try it in 10 sec again
905 $kernel->delay_set('trigger_logged_in_users_report', 10);
906 }
907 }
910 sub generic_file_error {
911 my ( $heap, $operation, $errno, $error_string, $wheel_id ) =
912 @_[ HEAP, ARG0, ARG1, ARG2, ARG3 ];
914 my $service = $heap->{services}->{$wheel_id};
915 daemon_log("ERROR: '$service' watcher $operation error $errno: $error_string", 1);
916 daemon_log("ERROR: shutting down '$service' file watcher", 1);
918 delete $heap->{services}->{$wheel_id};
919 delete $heap->{watchers}->{$wheel_id};
920 return;
921 }
924 sub fifo_got_record {
925 my $file_record = $_[ARG0];
926 my $header;
927 my $content = "";
928 daemon_log("DEBUG: fifo got record: $file_record", 7);
930 $file_record =~ /^(\S+)[ ]?([\s\S]+)?$/;
931 if( defined $1 ) {
932 $header = $1;
933 } else {
934 return;
935 }
937 if( defined $2 ) {
938 $content = $2;
939 }
941 my $clmsg_hash = &create_xml_hash("CLMSG_$header", $client_address, $server_address, $content);
942 &add_content2xml_hash($clmsg_hash, "macaddress", $client_mac_address);
943 my $clmsg = &create_xml_string($clmsg_hash);
944 &send_msg_to_target($clmsg, $server_address, $server_key, "CLMSG_$header");
946 # if installation finished, save all log files
947 if ($file_record eq "TASKBEGIN finish") {
948 &save_fai_log($fai_log_dir);
949 }
951 return;
952 }
955 sub save_fai_log {
956 my ($fai_log_dir) = @_ ;
957 my $FAI_DIR;
959 opendir($FAI_DIR, $fai_log_dir);
960 if (not defined $FAI_DIR) {
961 daemon_log("ERROR: can not open directory $fai_log_dir: $!", 1);
962 return;
963 }
965 my @log_files = readdir($FAI_DIR);
966 closedir($FAI_DIR);
967 my @log_list;
969 foreach my $log_file (@log_files) {
970 if( $log_file eq "." || $log_file eq ".." ) { next; }
971 my $log = "log_file:$log_file:";
972 $log_file = File::Spec->catfile( $fai_log_dir, $log_file );
973 open(my $FILE, "<$log_file");
974 if (not defined $FILE ) {
975 daemon_log("ERROR: can not open '$log_file': $!", 1);
976 next;
977 }
978 my @lines = <$FILE>;
979 my $log_string = join("", @lines);
980 $log .= &encode_base64($log_string);
981 push(@log_list, $log);
982 close ($FILE);
983 }
985 my $all_log_string = join("\n", @log_list);
986 my $msg_hash = &create_xml_hash("CLMSG_save_fai_log", $client_address, $server_address, $all_log_string);
987 &add_content2xml_hash($msg_hash, "macaddress", $client_mac_address);
988 my $msg = &create_xml_string($msg_hash);
989 &send_msg_to_target($msg, $server_address, $server_key, "CLMSG_save_fai_log");
991 }
994 sub _start {
995 my ($kernel, $heap) = @_[KERNEL, HEAP];
996 $kernel->alias_set('client_session');
997 $global_kernel = $kernel; # this is used to throw events at each point of the skript
999 # force a registration at a gosa-si-server
1000 $kernel->yield('register_at_gosa_si_server');
1002 # install all file watcher defined
1003 while( my($name, $file) = each %files_to_watch ) {
1004 my $watcher = POE::Wheel::FollowTail->new(
1005 Filename => $file,
1006 InputEvent => $name."_record",
1007 # ResetEvent => "file_reset",
1008 ErrorEvent => "file_error",
1009 );
1010 # $heap->{tail} = POE::Wheel::Run->new(
1011 # Program => [ "/usr/bin/tail", "-f", $file ],
1012 # StdoutEvent => $file_name."_record",
1013 # );
1014 $heap->{services}->{ $watcher->ID } = $name;
1015 $heap->{watchers}->{ $watcher->ID } = $watcher;
1016 }
1017 $kernel->yield('trigger_logged_in_users_report');
1018 }
1021 sub _default {
1022 daemon_log("ERROR: can not handle incoming msg with header '$_[ARG0]'", 1);
1023 return;
1024 }
1027 sub server_input {
1028 my ($kernel, $heap, $input, $wheel) = @_[KERNEL, HEAP, ARG0, ARG1];
1029 my $remote_ip = $heap->{'remote_ip'},
1030 my $error = 0;
1031 my $answer;
1034 daemon_log("INFO: Incoming msg from '$remote_ip'", 5);
1035 daemon_log("DEBUG: Incoming msg:\n$input\n", 9);
1037 my ($msg, $msg_hash) = &check_key_and_xml_validity($input, $server_key);
1038 if( (!$msg) || (!$msg_hash) ) {
1039 daemon_log("WARNING: Deciphering of incoming msg failed", 3);
1040 if($server_address =~ /$remote_ip/) {
1041 # got a msg from gosa-si-server which can not be decrypted, may the secrete not up-to-date
1042 # cause a reregistering with a new secrete handshake
1043 daemon_log("WARNING: Message from gosa-si-server could not be understood, cause reregistering at server", 3);
1045 # if client is alread in a registration process, that means not registered, do nothing
1046 # if not, cause re-registration
1047 if (not $REGISTERED) {
1048 &daemon_log("WARNING: gosa-si-client is already in a registration process so ignore this message", 3);
1049 } else {
1050 $REGISTERED = 0;
1051 $kernel->post('client_session', 'register_at_gosa_si_server');
1052 }
1053 }
1054 $error++;
1055 }
1058 ######################
1059 # process incoming msg
1060 if( $error == 0 ) {
1061 my $header = @{$msg_hash->{header}}[0];
1062 my $source = @{$msg_hash->{source}}[0];
1064 if( exists $event_hash->{$header} ) {
1066 # a event exists with the header as name
1067 daemon_log("INFO: found event '$header' at event-module '".$event_hash->{$header}."'", 5);
1068 no strict 'refs';
1069 $answer = &{$event_hash->{$header}."::$header"}($msg, $msg_hash);
1070 }
1071 else {
1072 daemon_log("WARNING: no event '$header' found in event modules under $event_dir", 3);
1073 }
1074 }
1076 ########
1077 # answer
1078 if( $answer ) {
1080 #check gosa-si envelope validity
1081 my $answer_hash = &check_outgoing_xml_validity($answer);
1083 if( $answer_hash ) {
1084 # answer is valid
1086 # preprocessing
1087 if( $answer =~ "<header>registered</header>") {
1088 # set registered flag to true to stop sending further registered msgs
1089 $REGISTERED = 1;
1090 }
1091 else {
1092 $answer =~ /<header>(\S+)<\/header>/;
1093 &send_msg_to_target($answer, $server_address, $server_key, $1);
1094 }
1096 # postprocessing
1097 if( $answer =~ "<header>new_key</header>") {
1098 # set new key to global variable
1099 $answer =~ /<new_key>(\S*?)<\/new_key>/;
1100 my $new_key = $1;
1101 $server_key = $new_key;
1102 }
1103 }
1105 }
1107 return;
1108 }
1111 #==== MAIN = main ==============================================================
1112 # parse commandline options
1113 Getopt::Long::Configure( "bundling" );
1114 GetOptions("h|help" => \&usage,
1115 "c|config=s" => \$cfg_file,
1116 "f|foreground" => \$foreground,
1117 "v|verbose+" => \$verbose,
1118 );
1120 # read and set config parameters
1121 &check_cmdline_param ;
1122 &read_configfile($cfg_file, %cfg_defaults);
1123 &check_pid;
1126 # forward error messages to logfile
1127 if ( ! $foreground ) {
1128 open( STDIN, '+>/dev/null' );
1129 open( STDOUT, '+>&STDIN' );
1130 open( STDERR, '+>&STDIN' );
1131 }
1133 # Just fork, if we are not in foreground mode
1134 if( ! $foreground ) {
1135 chdir '/' or die "Can't chdir to /: $!";
1136 $pid = fork;
1137 setsid or die "Can't start a new session: $!";
1138 umask 0;
1139 } else {
1140 $pid = $$;
1141 }
1143 # Do something useful - put our PID into the pid_file
1144 if( 0 != $pid ) {
1145 open( LOCK_FILE, ">$pid_file" );
1146 print LOCK_FILE "$pid\n";
1147 close( LOCK_FILE );
1148 if( !$foreground ) {
1149 exit( 0 )
1150 };
1151 }
1153 # parse head url and revision from svn
1154 my $client_status_hash = { 'developmental'=>'revision', 'stable'=>'release'};
1155 $client_version =~ /^\$HeadURL: (\S+) \$:\$Rev: (\d+) \$$/;
1156 $client_headURL = defined $1 ? $1 : 'unknown' ;
1157 $client_revision = defined $2 ? $2 : 'unknown' ;
1158 if ($client_headURL =~ /\/tag\// ||
1159 $client_headURL =~ /\/branches\// ) {
1160 $client_status = "stable";
1161 } else {
1162 $client_status = "developmental" ;
1163 }
1165 daemon_log(" ", 1);
1166 daemon_log("$prg started!", 1);
1167 daemon_log("INFO: status: $client_status", 1);
1168 daemon_log("INFO: ".$client_status_hash->{$client_status}.": $client_revision", 1);
1170 # delete old DBsqlite lock files
1171 system('rm -f /tmp/gosa_si_lock*gosa-si-client*');
1173 # detect ip and mac address and complete host address
1174 $client_address = $client_ip.":".$client_port;
1175 my $network_interface= &get_interface_for_ip($client_ip);
1176 $client_mac_address= &get_mac($network_interface);
1177 daemon_log("INFO: ip address detected: $client_ip", 1);
1178 daemon_log("INFO: gosa-si-client mac address detected: $client_mac_address", 1);
1181 # import events
1182 my ($error, $result, $tmp_hash) = &import_events($event_dir);
1183 $event_hash = $tmp_hash;
1184 if ($error == 0) {
1185 foreach my $log_line (@$result) {
1186 daemon_log("DEBUG: $log_line", 7);
1187 }
1188 } else {
1189 foreach my $log_line (@$result) {
1190 daemon_log("ERROR: $log_line", 1);
1191 }
1192 }
1195 # compute hardware checksum
1196 $gotoHardwareChecksum= &generate_hw_digest();
1197 daemon_log("INFO: gotoHardwareChecksum detected: $gotoHardwareChecksum", 1);
1200 # create socket for incoming xml messages
1201 POE::Component::Server::TCP->new(
1202 Alias => 'gosa-si-client',
1203 Port => $client_port,
1204 ClientInput => \&server_input,
1205 );
1206 daemon_log("INFO: start socket for incoming xml messages at port '$client_port' ", 1);
1209 # prepare variables
1210 if( inet_aton($server_ip) ){ $server_ip = inet_ntoa(inet_aton($server_ip)); }
1211 ############################################################
1212 # to change
1213 #if( $server_ip eq "127.0.1.1" ) { $server_ip = "127.0.0.1" }
1214 ############################################################
1215 if (defined $server_ip && defined $server_port) {
1216 $server_address = $server_ip.":".$server_port;
1217 }
1218 $xml = new XML::Simple();
1219 $default_server_key = $server_key;
1222 # add gosa-si-server address from config file at first position of server list
1223 my $server_check_cfg = Config::IniFiles->new( -file => $cfg_file );
1224 my $server_check = (defined($server_check_cfg))?$server_check_cfg->val( "server", "ip"):undef;
1225 if( defined $server_check ) {
1226 unshift(@servers, $server_address);
1227 my $servers_string = join(", ", @servers);
1228 daemon_log("INFO: found servers in configuration file: $servers_string", 5);
1229 } else {
1230 my @tmp_servers;
1231 if ( !$server_domain) {
1232 # Try our DNS Searchlist
1233 for my $domain(get_dns_domains()) {
1234 chomp($domain);
1235 my @tmp_domains= &get_server_addresses($domain);
1236 if(@tmp_domains) {
1237 for my $tmp_server(@tmp_domains) {
1238 push @tmp_servers, $tmp_server;
1239 }
1240 }
1241 }
1242 if(@tmp_servers && length(@tmp_servers)==0) {
1243 daemon_log("ERROR: please specify a gosa-si-server address or a domain in config file", 1);
1244 kill 2, $$;
1245 }
1246 } else {
1247 @tmp_servers = &get_server_addresses($server_domain);
1248 if( 0 == @tmp_servers ) {
1249 daemon_log("ERROR: no gosa-si-server found in DNS for domain '$server_domain'",1);
1250 daemon_log("ERROR: please specify a gosa-si-server address or a domain in config file", 1);
1251 kill 2, $$;
1252 }
1253 }
1255 foreach my $server (@tmp_servers) {
1256 unshift(@servers, $server);
1257 }
1258 my $servers_string = join(", ", @servers);
1259 daemon_log("INFO: found servers in DNS: $servers_string", 5);
1260 }
1263 # open fifo for non-gosa-si-client-msgs to gosa-si-server
1264 POSIX::mkfifo("$gosa_si_client_fifo", "0600");
1267 POE::Session->create(
1268 inline_states => {
1269 _start => \&_start,
1270 _default => \&_default,
1271 register_at_gosa_si_server => \®ister_at_gosa_si_server,
1273 # trigger periodical tasks
1274 trigger_new_key => \&trigger_new_key,
1275 trigger_logged_in_users_report => \&trigger_logged_in_users_report,
1277 # handle records from each defined file differently
1278 fifo_record => \&fifo_got_record,
1280 # handle file resets and errors the same way for each file
1281 file_reset => \&generic_file_reset,
1282 file_error => \&generic_file_error,
1283 }
1284 );
1286 POE::Kernel->run();
1287 exit;