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 # moved to GosaSupportDaemon: rettenbe, 19.05.2008
420 #sub create_passwd {
421 # my $new_passwd = "";
422 # for(my $i=0; $i<31; $i++) {
423 # $new_passwd .= ("a".."z","A".."Z",0..9)[int(rand(62))]
424 # }
425 #
426 # return $new_passwd;
427 #}
430 sub create_ciphering {
431 my ($passwd) = @_;
432 if((!defined($passwd)) || length($passwd)==0) {
433 $passwd = "";
434 }
435 $passwd = substr(md5_hex("$passwd") x 32, 0, 32);
436 my $iv = substr(md5_hex('GONICUS GmbH'),0, 16);
437 my $my_cipher = Crypt::Rijndael->new($passwd , Crypt::Rijndael::MODE_CBC());
438 $my_cipher->set_iv($iv);
439 return $my_cipher;
440 }
443 sub encrypt_msg {
444 my ($msg, $key) = @_;
445 my $my_cipher = &create_ciphering($key);
446 my $len;
447 {
448 use bytes;
449 $len= 16-length($msg)%16;
450 }
451 $msg = "\0"x($len).$msg;
452 $msg = $my_cipher->encrypt($msg);
453 chomp($msg = &encode_base64($msg));
454 # there are no newlines allowed inside msg
455 $msg=~ s/\n//g;
456 return $msg;
457 }
460 sub decrypt_msg {
462 my ($msg, $key) = @_ ;
463 $msg = &decode_base64($msg);
464 my $my_cipher = &create_ciphering($key);
465 $msg = $my_cipher->decrypt($msg);
466 $msg =~ s/\0*//g;
467 return $msg;
468 }
471 # moved to GosaSupportDaemon: rettenbe: 16.05.2008
472 #sub get_server_addresses {
473 # my $domain= shift;
474 # my @result;
475 #
476 # my $error = 0;
477 # my $res = Net::DNS::Resolver->new;
478 # my $query = $res->send("_gosa-si._tcp.".$domain, "SRV");
479 # my @hits;
480 #
481 # if ($query) {
482 # foreach my $rr ($query->answer) {
483 # push(@hits, $rr->target.":".$rr->port);
484 # }
485 # }
486 # else {
487 # #warn "query failed: ", $res->errorstring, "\n";
488 # $error++;
489 # }
490 #
491 # if( $error == 0 ) {
492 # foreach my $hit (@hits) {
493 # my ($hit_name, $hit_port) = split(/:/, $hit);
494 # chomp($hit_name);
495 # chomp($hit_port);
496 #
497 # my $address_query = $res->send($hit_name);
498 # if( 1 == length($address_query->answer) ) {
499 # foreach my $rr ($address_query->answer) {
500 # push(@result, $rr->address.":".$hit_port);
501 # }
502 # }
503 # }
504 # }
505 #
506 # return @result;
507 #}
510 #=== FUNCTION ================================================================
511 # NAME: send_msg_hash_to_target
512 # PARAMETERS: msg_hash - hash - xml_hash created with function create_xml_hash
513 # PeerAddr string - socket address to send msg
514 # PeerPort string - socket port, if not included in socket address
515 # RETURNS: nothing
516 # DESCRIPTION: ????
517 #===============================================================================
518 sub send_msg_hash_to_target {
519 my ($msg_hash, $address, $encrypt_key) = @_ ;
520 my $msg = &create_xml_string($msg_hash);
521 my $header = @{$msg_hash->{'header'}}[0];
522 my $error = &send_msg_to_target($msg, $address, $encrypt_key, $header);
524 return $error;
525 }
528 sub send_msg_to_target {
529 my ($msg, $address, $encrypt_key, $msg_header) = @_ ;
530 my $error = 0;
532 if( $msg_header ) { $msg_header = "'$msg_header'-"; }
533 else { $msg_header = ""; }
535 # encrypt xml msg
536 my $crypted_msg = &encrypt_msg($msg, $encrypt_key);
538 # opensocket
539 my $socket = &open_socket($address);
540 if( !$socket ) {
541 daemon_log("ERROR: cannot send ".$msg_header."msg to $address , host not reachable", 1);
542 if ($REGISTERED == 1) {
543 $REGISTERED = 0; # if server is not available, cause reregistering
544 daemon_log("INFO: cause reregistering at gosa-si-server", 5);
545 $global_kernel->yield('register_at_gosa_si_server');
547 }
548 $error++;
549 }
551 # send xml msg
552 if( $error == 0 ) {
553 print $socket $crypted_msg."\n";
554 daemon_log("INFO: send ".$msg_header."msg to $address", 5);
555 daemon_log("DEBUG: message:\n$msg", 9);
556 }
558 # close socket in any case
559 if( $socket ) {
560 close $socket;
561 }
563 return $error;
564 }
567 sub write_to_file {
568 my ($string, $file) = @_;
569 my $error = 0;
571 if( not defined $file || not -f $file ) {
572 &main::daemon_log("ERROR: $prg: check '-f file' failed: $file", 1);
573 $error++;
574 }
575 if( not defined $string || 0 == length($string)) {
576 &main::daemon_log("ERROR: $prg: empty string to write to file '$file'", 1);
577 $error++;
578 }
580 if( $error == 0 ) {
582 chomp($string);
584 if (open(FILE, ">> $file")){
585 print FILE $string."\n";
586 close(FILE);
587 }
588 }
590 return;
591 }
594 sub open_socket {
595 my ($PeerAddr, $PeerPort) = @_ ;
596 if(defined($PeerPort)){
597 $PeerAddr = $PeerAddr.":".$PeerPort;
598 }
599 my $socket;
600 $socket = new IO::Socket::INET(PeerAddr => $PeerAddr,
601 Porto => "tcp",
602 Type => SOCK_STREAM,
603 Timeout => 5,
604 );
605 if(not defined $socket) {
606 return;
607 }
608 &daemon_log("DEBUG: open_socket: $PeerAddr", 7);
609 return $socket;
610 }
613 #=== FUNCTION ================================================================
614 # NAME: register_at_server
615 # PARAMETERS:
616 # RETURNS:
617 # DESCRIPTION:
618 #===============================================================================
619 sub register_at_gosa_si_server {
620 my ($kernel) = $_[KERNEL];
621 my $try_to_register = 0;
623 # if client is already registered, stop registration process
624 if ($REGISTERED) {
625 $kernel->delay('register_at_gosa_si_server');
627 # client is not registered, start registration process
628 } else {
629 # clear all other triggered events and wait till registration was successful
630 $kernel->delay('trigger_new_key');
632 # create new passwd and ciphering object for client-server communication
633 $server_key = &create_passwd();
635 my $events = join( ",", keys %{$event_hash} );
636 while(1) {
637 $try_to_register++;
639 # after one complete round through all server, stop trying to register
640 if( $try_to_register > @servers ) { last; }
642 # fetch first gosa-si-server from @servers
643 # append shifted gosa-si-server at the end of @servers, so looking for servers never stop if
644 # a registration never occured
645 my $server = shift(@servers);
646 push( @servers, $server );
648 # Check if our ip is resolvable - if not: don't try to register
649 if(!(defined($server) && $server =~ m/^[0-9\.]*?:.*$/)) {
650 &main::daemon_log("ERROR: Server with address '".defined($server)?$server:""."' is invalid!", 1);
651 if (length(@servers) == 1) {
652 &main::daemon_log("ERROR: No valid servers found!", 1);
653 exit(1);
654 }
655 }
657 # Check if our ip is resolvable - if not: don't try to register
658 my $ip= &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
659 my $dnsname= gethostbyaddr(inet_aton($ip), AF_INET);
660 if(!defined($dnsname)) {
661 &write_to_file("goto-error-dns:$ip", $fai_logpath);
662 exit(1);
663 }
665 # create registration msg
666 my $local_ip = &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
667 my $local_mac = &get_local_mac_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
668 my $register_hash = &create_xml_hash("here_i_am", $local_ip.":".$client_port, $server);
669 &add_content2xml_hash($register_hash, "new_passwd", $server_key);
670 &add_content2xml_hash($register_hash, "mac_address", $local_mac);
671 &add_content2xml_hash($register_hash, "events", $events);
672 &add_content2xml_hash($register_hash, "client_status", $client_status);
673 &add_content2xml_hash($register_hash, "client_revision", $client_revision);
674 &add_content2xml_hash($register_hash, "gotoHardwareChecksum", $gotoHardwareChecksum);
675 &add_content2xml_hash($register_hash, "key_lifetime", $server_key_lifetime);
677 # Add $HOSTNAME from ENV if force-hostname is set
678 if( defined($client_force_hostname) && $client_force_hostname eq "true") {
679 if(defined($ENV{HOSTNAME}) && length($ENV{HOSTNAME}) >0 ) {
680 &add_content2xml_hash($register_hash, "force-hostname", $ENV{HOSTNAME});
681 } else {
682 &main::daemon_log("force-hostname was set to true, but no \$HOSTNAME was found in Environment!",0);
683 }
684 }
686 # send xml hash to server with general server passwd
687 my $res = &send_msg_hash_to_target($register_hash, $server, $default_server_key);
689 # if delivery of registration msg succeed
690 if($res eq "0") {
691 # reset try_to_register
692 $try_to_register = 0;
694 # Set fixed client address and mac address
695 $client_ip= &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
696 $client_address= "$client_ip:$client_port";
697 $client_mac_address = $local_mac;
698 $client_dnsname = $dnsname;
699 last;
701 # delivery of registration msg failed
702 } else {
703 # wait 1 sec until trying to register again
704 sleep(1);
705 next;
706 }
708 } # end of while
709 # one circle through all servers finished and no registration succeed
710 if ( $try_to_register >= @servers ) {
711 &write_to_file("gosa-si-no-server-available", $fai_logpath);
712 $kernel->delay_set('register_at_gosa_si_server', $delay_set_time);
714 # delivery of registraion msg succeed, waiting for server response
715 } else {
716 daemon_log("INFO: waiting for msg 'register_at_gosa_si_server'",5);
717 $kernel->delay_set('register_at_gosa_si_server', $delay_set_time);
718 # clear old settings and set it again
719 $kernel->delay('trigger_new_key');
720 $kernel->delay_set('trigger_new_key', $server_key_lifetime);
721 }
723 }
724 return;
725 }
728 sub check_key_and_xml_validity {
729 my ($crypted_msg, $module_key) = @_;
731 my $msg;
732 my $msg_hash;
733 eval{
734 $msg = &decrypt_msg($crypted_msg, $module_key);
735 &main::daemon_log("decrypted_msg: \n$msg", 9);
737 $msg_hash = $xml->XMLin($msg, ForceArray=>1);
739 ##############
740 # check header
741 my $header_l = $msg_hash->{'header'};
742 if( 1 != @{$header_l} ) {
743 die 'no or more headers specified';
744 }
745 my $header = @{$header_l}[0];
746 if( 0 == length $header) {
747 die 'header has length 0';
748 }
750 ##############
751 # check source
752 my $source_l = $msg_hash->{'source'};
753 if( 1 != @{$source_l} ) {
754 die 'no or more than 1 sources specified';
755 }
756 my $source = @{$source_l}[0];
757 if( 0 == length $source) {
758 die 'source has length 0';
759 }
760 unless( $source =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ) {
761 die "source '$source' is neither a complete ip-address with port nor 'GOSA'";
762 }
764 ##############
765 # check target
766 my $target_l = $msg_hash->{'target'};
767 if( 1 != @{$target_l} ) {
768 die 'no or more than 1 targets specified ';
769 }
770 my $target = @{$target_l}[0];
771 if( 0 == length $target) {
772 die 'target has length 0 ';
773 }
774 unless( $target =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ){
775 die "source is neither a complete ip-address with port nor 'GOSA'";
776 }
777 };
778 if($@) {
779 &main::daemon_log("WARNING: do not understand the message or msg is not gosa-si envelope conform:", 5);
780 &main::daemon_log("$@", 8);
781 $msg = undef;
782 $msg_hash = undef;
783 }
785 return ($msg, $msg_hash);
786 }
789 sub check_outgoing_xml_validity {
790 my ($msg) = @_;
792 my $msg_hash;
793 eval{
794 $msg_hash = $xml->XMLin($msg, ForceArray=>1);
796 ##############
797 # check header
798 my $header_l = $msg_hash->{'header'};
799 if( 1 != @{$header_l} ) {
800 die 'no or more than one headers specified';
801 }
802 my $header = @{$header_l}[0];
803 if( 0 == length $header) {
804 die 'header has length 0';
805 }
807 ##############
808 # check source
809 my $source_l = $msg_hash->{'source'};
810 if( 1 != @{$source_l} ) {
811 die 'no or more than 1 sources specified';
812 }
813 my $source = @{$source_l}[0];
814 if( 0 == length $source) {
815 die 'source has length 0';
816 }
817 unless( $source =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ||
818 $source =~ /^GOSA$/i ) {
819 die "source '$source' is neither a complete ip-address with port";
820 }
822 ##############
823 # check target
824 my $target_l = $msg_hash->{'target'};
825 if( 1 != @{$target_l} ) {
826 die "no or more than one targets specified";
827 }
828 foreach my $target (@$target_l) {
829 if( 0 == length $target) {
830 die "target has length 0";
831 }
832 unless( $target =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ) {
833 die "target '$target' is not a complete ip-address with port or a valid target name";
834 }
835 }
836 };
837 if($@) {
838 daemon_log("WARNING: outgoing msg is not gosa-si envelope conform", 5);
839 daemon_log("$@ $msg", 8);
840 $msg_hash = undef;
841 }
842 return ($msg_hash);
843 }
846 #sub import_events {
847 #
848 # if (not -e $event_dir) {
849 # daemon_log("ERROR: cannot find directory or directory is not readable: $event_dir", 1);
850 # }
851 # opendir (DIR, $event_dir) or die "ERROR while loading gosa-si-events from directory $event_dir : $!\n";
852 #
853 # while (defined (my $event = readdir (DIR))) {
854 # if( $event eq "." || $event eq ".." ) { next; }
855 # daemon_log("INFO: found event module: $event", 5);
856 # eval{ require $event; };
857 # if( $@ ) {
858 # daemon_log("ERROR: import of event module '$event' failed", 1);
859 # daemon_log("$@", 1);
860 # next;
861 # }
862 #
863 # $event =~ /(\S*?).pm$/;
864 # my $event_module = $1;
865 # my $events_l = eval( $1."::get_events()") ;
866 # foreach my $event_name (@{$events_l}) {
867 # $event_hash->{$event_name} = $event_module;
868 # }
869 #
870 # }
871 #
872 # my @all_events = keys %$event_hash;
873 # my $all_events_string = join(", ", @all_events);
874 #
875 # daemon_log("INFO: imported events: $all_events_string", 5);
876 #}
878 sub trigger_new_key {
879 my ($kernel) = $_[KERNEL] ;
881 my $msg = "<xml><header>new_key</header><source>$client_address</source><target>$client_address</target></xml>";
882 &send_msg_to_target($msg, $client_address, $server_key, 'new_key');
884 $kernel->delay_set('trigger_new_key', $server_key_lifetime);
885 }
888 sub trigger_logged_in_users_report {
889 my ($kernel) = $_[KERNEL] ;
891 # just do if client is registered already
892 if( $REGISTERED ) {
893 my $result = qx(/usr/bin/users);
894 my @logged_in_user_list;
895 if( defined $result ) {
896 chomp($result);
897 @logged_in_user_list = split(/\s/, $result);
898 }
900 system("echo 'CURRENTLY_LOGGED_IN ".join(" ", @logged_in_user_list)."' > /var/run/gosa-si-client.socket");
901 $kernel->delay_set('trigger_logged_in_users_report', $trigger_logged_in_users_report_delay);
902 } else {
903 # try it in 10 sec again
904 $kernel->delay_set('trigger_logged_in_users_report', 10);
905 }
906 }
909 sub generic_file_error {
910 my ( $heap, $operation, $errno, $error_string, $wheel_id ) =
911 @_[ HEAP, ARG0, ARG1, ARG2, ARG3 ];
913 my $service = $heap->{services}->{$wheel_id};
914 daemon_log("ERROR: '$service' watcher $operation error $errno: $error_string", 1);
915 daemon_log("ERROR: shutting down '$service' file watcher", 1);
917 delete $heap->{services}->{$wheel_id};
918 delete $heap->{watchers}->{$wheel_id};
919 return;
920 }
923 sub fifo_got_record {
924 my $file_record = $_[ARG0];
925 my $header;
926 my $content = "";
927 daemon_log("DEBUG: fifo got record: $file_record", 7);
929 $file_record =~ /^(\S+)[ ]?([\s\S]+)?$/;
930 if( defined $1 ) {
931 $header = $1;
932 } else {
933 return;
934 }
936 if( defined $2 ) {
937 $content = $2;
938 }
940 my $clmsg_hash = &create_xml_hash("CLMSG_$header", $client_address, $server_address, $content);
941 &add_content2xml_hash($clmsg_hash, "macaddress", $client_mac_address);
942 my $clmsg = &create_xml_string($clmsg_hash);
943 &send_msg_to_target($clmsg, $server_address, $server_key, "CLMSG_$header");
945 # if installation finished, save all log files
946 if ($file_record eq "TASKBEGIN finish") {
947 &save_fai_log($fai_log_dir);
948 }
950 return;
951 }
954 sub save_fai_log {
955 my ($fai_log_dir) = @_ ;
956 my $FAI_DIR;
958 opendir($FAI_DIR, $fai_log_dir);
959 if (not defined $FAI_DIR) {
960 daemon_log("ERROR: can not open directory $fai_log_dir: $!", 1);
961 return;
962 }
964 my @log_files = readdir($FAI_DIR);
965 closedir($FAI_DIR);
966 my @log_list;
968 foreach my $log_file (@log_files) {
969 if( $log_file eq "." || $log_file eq ".." ) { next; }
970 my $log = "log_file:$log_file:";
971 $log_file = File::Spec->catfile( $fai_log_dir, $log_file );
972 open(my $FILE, "<$log_file");
973 if (not defined $FILE ) {
974 daemon_log("ERROR: can not open '$log_file': $!", 1);
975 next;
976 }
977 my @lines = <$FILE>;
978 my $log_string = join("", @lines);
979 $log .= &encode_base64($log_string);
980 push(@log_list, $log);
981 close ($FILE);
982 }
984 my $all_log_string = join("\n", @log_list);
985 my $msg_hash = &create_xml_hash("CLMSG_save_fai_log", $client_address, $server_address, $all_log_string);
986 &add_content2xml_hash($msg_hash, "macaddress", $client_mac_address);
987 my $msg = &create_xml_string($msg_hash);
988 &send_msg_to_target($msg, $server_address, $server_key, "CLMSG_save_fai_log");
990 }
993 sub _start {
994 my ($kernel, $heap) = @_[KERNEL, HEAP];
995 $kernel->alias_set('client_session');
996 $global_kernel = $kernel; # this is used to throw events at each point of the skript
998 # force a registration at a gosa-si-server
999 $kernel->yield('register_at_gosa_si_server');
1001 # install all file watcher defined
1002 while( my($name, $file) = each %files_to_watch ) {
1003 my $watcher = POE::Wheel::FollowTail->new(
1004 Filename => $file,
1005 InputEvent => $name."_record",
1006 # ResetEvent => "file_reset",
1007 ErrorEvent => "file_error",
1008 );
1009 # $heap->{tail} = POE::Wheel::Run->new(
1010 # Program => [ "/usr/bin/tail", "-f", $file ],
1011 # StdoutEvent => $file_name."_record",
1012 # );
1013 $heap->{services}->{ $watcher->ID } = $name;
1014 $heap->{watchers}->{ $watcher->ID } = $watcher;
1015 }
1016 $kernel->yield('trigger_logged_in_users_report');
1017 }
1020 sub _default {
1021 daemon_log("ERROR: can not handle incoming msg with header '$_[ARG0]'", 1);
1022 return;
1023 }
1026 sub server_input {
1027 my ($kernel, $heap, $input, $wheel) = @_[KERNEL, HEAP, ARG0, ARG1];
1028 my $remote_ip = $heap->{'remote_ip'},
1029 my $error = 0;
1030 my $answer;
1033 daemon_log("INFO: Incoming msg from '$remote_ip'", 5);
1034 daemon_log("DEBUG: Incoming msg:\n$input\n", 9);
1036 my ($msg, $msg_hash) = &check_key_and_xml_validity($input, $server_key);
1037 if( (!$msg) || (!$msg_hash) ) {
1038 daemon_log("WARNING: Deciphering of incoming msg failed", 3);
1039 if($server_address =~ /$remote_ip/) {
1040 # got a msg from gosa-si-server which can not be decrypted, may the secrete not up-to-date
1041 # cause a reregistering with a new secrete handshake
1042 daemon_log("WARNING: Message from gosa-si-server could not be understood, cause reregistering at server", 3);
1044 # if client is alread in a registration process, that means not registered, do nothing
1045 # if not, cause re-registration
1046 if (not $REGISTERED) {
1047 &daemon_log("WARNING: gosa-si-client is already in a registration process so ignore this message", 3);
1048 } else {
1049 $REGISTERED = 0;
1050 $kernel->post('client_session', 'register_at_gosa_si_server');
1051 }
1052 }
1053 $error++;
1054 }
1057 ######################
1058 # process incoming msg
1059 if( $error == 0 ) {
1060 my $header = @{$msg_hash->{header}}[0];
1061 my $source = @{$msg_hash->{source}}[0];
1063 if( exists $event_hash->{$header} ) {
1065 # a event exists with the header as name
1066 daemon_log("INFO: found event '$header' at event-module '".$event_hash->{$header}."'", 5);
1067 no strict 'refs';
1068 $answer = &{$event_hash->{$header}."::$header"}($msg, $msg_hash);
1069 }
1070 else {
1071 daemon_log("WARNING: no event '$header' found in event modules under $event_dir", 3);
1072 }
1073 }
1075 ########
1076 # answer
1077 if( $answer ) {
1079 #check gosa-si envelope validity
1080 my $answer_hash = &check_outgoing_xml_validity($answer);
1082 if( $answer_hash ) {
1083 # answer is valid
1085 # preprocessing
1086 if( $answer =~ "<header>registered</header>") {
1087 # set registered flag to true to stop sending further registered msgs
1088 $REGISTERED = 1;
1089 }
1090 else {
1091 $answer =~ /<header>(\S+)<\/header>/;
1092 &send_msg_to_target($answer, $server_address, $server_key, $1);
1093 }
1095 # postprocessing
1096 if( $answer =~ "<header>new_key</header>") {
1097 # set new key to global variable
1098 $answer =~ /<new_key>(\S*?)<\/new_key>/;
1099 my $new_key = $1;
1100 $server_key = $new_key;
1101 }
1102 }
1104 }
1106 return;
1107 }
1110 #==== MAIN = main ==============================================================
1111 # parse commandline options
1112 Getopt::Long::Configure( "bundling" );
1113 GetOptions("h|help" => \&usage,
1114 "c|config=s" => \$cfg_file,
1115 "f|foreground" => \$foreground,
1116 "v|verbose+" => \$verbose,
1117 );
1119 # read and set config parameters
1120 &check_cmdline_param ;
1121 &read_configfile($cfg_file, %cfg_defaults);
1122 &check_pid;
1125 # forward error messages to logfile
1126 if ( ! $foreground ) {
1127 open( STDIN, '+>/dev/null' );
1128 open( STDOUT, '+>&STDIN' );
1129 open( STDERR, '+>&STDIN' );
1130 }
1132 # Just fork, if we are not in foreground mode
1133 if( ! $foreground ) {
1134 chdir '/' or die "Can't chdir to /: $!";
1135 $pid = fork;
1136 setsid or die "Can't start a new session: $!";
1137 umask 0;
1138 } else {
1139 $pid = $$;
1140 }
1142 # Do something useful - put our PID into the pid_file
1143 if( 0 != $pid ) {
1144 open( LOCK_FILE, ">$pid_file" );
1145 print LOCK_FILE "$pid\n";
1146 close( LOCK_FILE );
1147 if( !$foreground ) {
1148 exit( 0 )
1149 };
1150 }
1152 # parse head url and revision from svn
1153 my $client_status_hash = { 'developmental'=>'revision', 'stable'=>'release'};
1154 $client_version =~ /^\$HeadURL: (\S+) \$:\$Rev: (\d+) \$$/;
1155 $client_headURL = defined $1 ? $1 : 'unknown' ;
1156 $client_revision = defined $2 ? $2 : 'unknown' ;
1157 if ($client_headURL =~ /\/tag\// ||
1158 $client_headURL =~ /\/branches\// ) {
1159 $client_status = "stable";
1160 } else {
1161 $client_status = "developmental" ;
1162 }
1164 daemon_log(" ", 1);
1165 daemon_log("$prg started!", 1);
1166 daemon_log("INFO: status: $client_status", 1);
1167 daemon_log("INFO: ".$client_status_hash->{$client_status}.": $client_revision", 1);
1169 # delete old DBsqlite lock files
1170 system('rm -f /tmp/gosa_si_lock*gosa-si-client*');
1172 # detect ip and mac address and complete host address
1173 $client_address = $client_ip.":".$client_port;
1174 my $network_interface= &get_interface_for_ip($client_ip);
1175 $client_mac_address= &get_mac($network_interface);
1176 daemon_log("INFO: ip address detected: $client_ip", 1);
1177 daemon_log("INFO: gosa-si-client mac address detected: $client_mac_address", 1);
1180 # import events
1181 my ($error, $result, $tmp_hash) = &import_events($event_dir);
1182 $event_hash = $tmp_hash;
1183 if ($error == 0) {
1184 foreach my $log_line (@$result) {
1185 daemon_log("DEBUG: $log_line", 7);
1186 }
1187 } else {
1188 foreach my $log_line (@$result) {
1189 daemon_log("ERROR: $log_line", 1);
1190 }
1191 }
1194 # compute hardware checksum
1195 $gotoHardwareChecksum= &generate_hw_digest();
1196 daemon_log("INFO: gotoHardwareChecksum detected: $gotoHardwareChecksum", 1);
1199 # create socket for incoming xml messages
1200 POE::Component::Server::TCP->new(
1201 Alias => 'gosa-si-client',
1202 Port => $client_port,
1203 ClientInput => \&server_input,
1204 );
1205 daemon_log("INFO: start socket for incoming xml messages at port '$client_port' ", 1);
1208 # prepare variables
1209 if( inet_aton($server_ip) ){ $server_ip = inet_ntoa(inet_aton($server_ip)); }
1210 ############################################################
1211 # to change
1212 #if( $server_ip eq "127.0.1.1" ) { $server_ip = "127.0.0.1" }
1213 ############################################################
1214 if (defined $server_ip && defined $server_port) {
1215 $server_address = $server_ip.":".$server_port;
1216 }
1217 $xml = new XML::Simple();
1218 $default_server_key = $server_key;
1221 # add gosa-si-server address from config file at first position of server list
1222 my $server_check_cfg = Config::IniFiles->new( -file => $cfg_file );
1223 my $server_check = (defined($server_check_cfg))?$server_check_cfg->val( "server", "ip"):undef;
1224 if( defined $server_check ) {
1225 unshift(@servers, $server_address);
1226 my $servers_string = join(", ", @servers);
1227 daemon_log("INFO: found servers in configuration file: $servers_string", 5);
1228 } else {
1229 my @tmp_servers;
1230 if ( !$server_domain) {
1231 # Try our DNS Searchlist
1232 for my $domain(get_dns_domains()) {
1233 chomp($domain);
1234 my @tmp_domains= &get_server_addresses($domain);
1235 if(@tmp_domains) {
1236 for my $tmp_server(@tmp_domains) {
1237 push @tmp_servers, $tmp_server;
1238 }
1239 }
1240 }
1241 if(@tmp_servers && length(@tmp_servers)==0) {
1242 daemon_log("ERROR: please specify a gosa-si-server address or a domain in config file", 1);
1243 kill 2, $$;
1244 }
1245 } else {
1246 @tmp_servers = &get_server_addresses($server_domain);
1247 if( 0 == @tmp_servers ) {
1248 daemon_log("ERROR: no gosa-si-server found in DNS for domain '$server_domain'",1);
1249 daemon_log("ERROR: please specify a gosa-si-server address or a domain in config file", 1);
1250 kill 2, $$;
1251 }
1252 }
1254 foreach my $server (@tmp_servers) {
1255 unshift(@servers, $server);
1256 }
1257 my $servers_string = join(", ", @servers);
1258 daemon_log("INFO: found servers in DNS: $servers_string", 5);
1259 }
1262 # open fifo for non-gosa-si-client-msgs to gosa-si-server
1263 POSIX::mkfifo("$gosa_si_client_fifo", "0600");
1266 POE::Session->create(
1267 inline_states => {
1268 _start => \&_start,
1269 _default => \&_default,
1270 register_at_gosa_si_server => \®ister_at_gosa_si_server,
1272 # trigger periodical tasks
1273 trigger_new_key => \&trigger_new_key,
1274 trigger_logged_in_users_report => \&trigger_logged_in_users_report,
1276 # handle records from each defined file differently
1277 fifo_record => \&fifo_got_record,
1279 # handle file resets and errors the same way for each file
1280 file_reset => \&generic_file_reset,
1281 file_error => \&generic_file_error,
1282 }
1283 );
1285 POE::Kernel->run();
1286 exit;