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;
27 use POE qw(Component::Server::TCP);
28 use IO::Socket::INET;
29 use NetAddr::IP;
30 use Data::Dumper;
31 use Crypt::Rijndael;
32 use GOSA::GosaSupportDaemon;
33 use Digest::MD5 qw(md5_hex);
34 use MIME::Base64;
35 use XML::Simple;
36 #use Fcntl;
37 #use Sys::Syslog qw( :DEFAULT setlogsock);
38 #use File::Spec;
39 #use Cwd;
41 my $event_dir = "/usr/lib/gosa-si/client/events";
42 use lib "/usr/lib/gosa-si/client/events";
44 my ($cfg_file, %cfg_defaults, $foreground, $verbose, $pid_file, $procid, $pid, $log_file);
45 my ($server_ip, $server_port, $server_key, $server_timeout, $server_domain);
46 my ($client_ip, $client_port, $ldap_enabled, $ldap_config, $pam_config, $nss_config);
47 my $xml;
48 my $default_server_key;
49 my $event_hash;
50 my @servers;
52 # globalise variables which are used in imported events
53 our $cfg_file;
54 our $server_address;
55 our $client_address;
56 our $client_mac_address;
57 our $server_key;
59 # default variables
60 our $REGISTERED_FLAG = 1;
62 %cfg_defaults = (
63 "general" =>
64 {"log_file" => [\$log_file, "/var/run/".$0.".log"],
65 "pid_file" => [\$pid_file, "/var/run/".$0.".pid"],
66 },
67 "client" =>
68 {"client_port" => [\$client_port, "20083"],
69 "client_ip" => [\$client_ip, "0.0.0.0"],
70 "ldap" => [\$ldap_enabled, 1],
71 "ldap_config" => [\$ldap_config, "/etc/ldap/ldap.conf"],
72 "pam_config" => [\$pam_config, "/etc/pam_ldap.conf"],
73 "nss_config" => [\$nss_config, "/etc/libnss_ldap.conf"],
74 },
75 "server" =>
76 {"server_ip" => [\$server_ip, "127.0.0.1"],
77 "server_port" => [\$server_port, "20081"],
78 "server_key" => [\$server_key, ""],
79 "server_timeout" => [\$server_timeout, 10],
80 "server_domain" => [\$server_domain, ""],
81 },
83 );
86 #=== FUNCTIONS = functions =====================================================
88 #=== FUNCTION ================================================================
89 # NAME: check_cmdline_param
90 # PARAMETERS:
91 # RETURNS:
92 # DESCRIPTION:
93 #===============================================================================
94 sub check_cmdline_param () {
95 my $err_config;
96 my $err_counter = 0;
97 if(not defined($cfg_file)) {
98 $cfg_file = "/etc/gosa-si/client.conf";
99 if(! -r $cfg_file) {
100 $err_config = "please specify a config file";
101 $err_counter += 1;
102 }
103 }
104 if( $err_counter > 0 ) {
105 &usage( "", 1 );
106 if( defined( $err_config)) { print STDERR "$err_config\n"}
107 print STDERR "\n";
108 exit( -1 );
109 }
110 }
113 #=== FUNCTION ================================================================
114 # NAME: read_configfile
115 # PARAMETERS: cfg_file - string -
116 # RETURNS:
117 # DESCRIPTION:
118 #===============================================================================
119 sub read_configfile {
120 my ($cfg_file, %cfg_defaults) = @_ ;
121 my $cfg;
122 if( defined( $cfg_file) && ( length($cfg_file) > 0 )) {
123 if( -r $cfg_file ) {
124 $cfg = Config::IniFiles->new( -file => $cfg_file );
125 } else {
126 print STDERR "Couldn't read config file!";
127 }
128 } else {
129 $cfg = Config::IniFiles->new() ;
130 }
131 foreach my $section (keys %cfg_defaults) {
132 foreach my $param (keys %{$cfg_defaults{ $section }}) {
133 my $pinfo = $cfg_defaults{ $section }{ $param };
134 ${@$pinfo[ 0 ]} = $cfg->val( $section, $param, @$pinfo[ 1 ] );
135 }
136 }
137 }
140 #=== FUNCTION ================================================================
141 # NAME: check_pid
142 # PARAMETERS:
143 # RETURNS:
144 # DESCRIPTION:
145 #===============================================================================
146 sub check_pid {
147 $pid = -1;
148 # Check, if we are already running
149 if( open(LOCK_FILE, "<$pid_file") ) {
150 $pid = <LOCK_FILE>;
151 if( defined $pid ) {
152 chomp( $pid );
153 if( -f "/proc/$pid/stat" ) {
154 my($stat) = `cat /proc/$pid/stat` =~ m/$pid \((.+)\).*/;
155 if( $0 eq $stat ) {
156 close( LOCK_FILE );
157 exit -1;
158 }
159 }
160 }
161 close( LOCK_FILE );
162 unlink( $pid_file );
163 }
165 # create a syslog msg if it is not to possible to open PID file
166 if (not sysopen(LOCK_FILE, $pid_file, O_WRONLY|O_CREAT|O_EXCL, 0644)) {
167 my($msg) = "Couldn't obtain lockfile '$pid_file' ";
168 if (open(LOCK_FILE, '<', $pid_file)
169 && ($pid = <LOCK_FILE>))
170 {
171 chomp($pid);
172 $msg .= "(PID $pid)\n";
173 } else {
174 $msg .= "(unable to read PID)\n";
175 }
176 if( ! ($foreground) ) {
177 openlog( $0, "cons,pid", "daemon" );
178 syslog( "warning", $msg );
179 closelog();
180 }
181 else {
182 print( STDERR " $msg " );
183 }
184 exit( -1 );
185 }
186 }
189 #=== FUNCTION ================================================================
190 # NAME: logging
191 # PARAMETERS: level - string - default 'info'
192 # msg - string -
193 # facility - string - default 'LOG_DAEMON'
194 # RETURNS:
195 # DESCRIPTION:
196 #===============================================================================
197 sub daemon_log {
198 # log into log_file
199 my( $msg, $level ) = @_;
200 if(not defined $msg) { return }
201 if(not defined $level) { $level = 1 }
202 if(defined $log_file){
203 open(LOG_HANDLE, ">>$log_file");
204 if(not defined open( LOG_HANDLE, ">>$log_file" )) {
205 print STDERR "cannot open $log_file: $!";
206 return }
207 chomp($msg);
208 if($level <= $verbose){
209 my ($seconds, $minutes, $hours, $monthday, $month,
210 $year, $weekday, $yearday, $sommertime) = localtime(time);
211 $hours = $hours < 10 ? $hours = "0".$hours : $hours;
212 $minutes = $minutes < 10 ? $minutes = "0".$minutes : $minutes;
213 $seconds = $seconds < 10 ? $seconds = "0".$seconds : $seconds;
214 my @monthnames = ("Jan", "Feb", "Mar", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
215 $month = $monthnames[$month];
216 $monthday = $monthday < 10 ? $monthday = "0".$monthday : $monthday;
217 $year+=1900;
218 my $name = $0;
219 $name =~ s/\.\///;
221 my $log_msg = "$month $monthday $hours:$minutes:$seconds $name $msg\n";
222 print LOG_HANDLE $log_msg;
223 if( $foreground ) {
224 print STDERR $log_msg;
225 }
226 }
227 close( LOG_HANDLE );
228 }
229 #log into syslog
230 # my ($msg, $level, $facility) = @_;
231 # if(not defined $msg) {return}
232 # if(not defined $level) {$level = "info"}
233 # if(not defined $facility) {$facility = "LOG_DAEMON"}
234 # openlog($0, "pid,cons,", $facility);
235 # syslog($level, $msg);
236 # closelog;
237 # return;
238 }
241 #=== FUNCTION ================================================================
242 # NAME: get_interfaces
243 # PARAMETERS: none
244 # RETURNS: (list of interfaces)
245 # DESCRIPTION: Uses proc fs (/proc/net/dev) to get list of interfaces.
246 #===============================================================================
247 sub get_interfaces {
248 my @result;
249 my $PROC_NET_DEV= ('/proc/net/dev');
251 open(PROC_NET_DEV, "<$PROC_NET_DEV")
252 or die "Could not open $PROC_NET_DEV";
254 my @ifs = <PROC_NET_DEV>;
256 close(PROC_NET_DEV);
258 # Eat first two line
259 shift @ifs;
260 shift @ifs;
262 chomp @ifs;
263 foreach my $line(@ifs) {
264 my $if= (split /:/, $line)[0];
265 $if =~ s/^\s+//;
266 push @result, $if;
267 }
269 return @result;
270 }
272 #=== FUNCTION ================================================================
273 # NAME: get_mac
274 # PARAMETERS: interface name (i.e. eth0)
275 # RETURNS: (mac address)
276 # DESCRIPTION: Uses ioctl to get mac address directly from system.
277 #===============================================================================
278 sub get_mac {
279 my $ifreq= shift;
280 my $result;
281 if ($ifreq && length($ifreq) > 0) {
282 if($ifreq eq "all") {
283 if(defined($server_ip)) {
284 $result = &get_local_mac_for_remote_ip($server_ip);
285 }
286 elsif ($client_mac_address && length($client_mac_address) > 0){
287 $result = &client_mac_address;
288 }
289 else {
290 $result = "00:00:00:00:00:00";
291 }
292 } else {
293 my $SIOCGIFHWADDR= 0x8927; # man 2 ioctl_list
295 # A configured MAC Address should always override a guessed value
296 if ($client_mac_address and length($client_mac_address) > 0) {
297 $result= $client_mac_address;
298 }
300 socket SOCKET, PF_INET, SOCK_DGRAM, getprotobyname('ip')
301 or die "socket: $!";
303 if(ioctl SOCKET, $SIOCGIFHWADDR, $ifreq) {
304 my ($if, $mac)= unpack 'h36 H12', $ifreq;
306 if (length($mac) > 0) {
307 $mac=~ m/^([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])$/;
308 $mac= sprintf("%s:%s:%s:%s:%s:%s", $1, $2, $3, $4, $5, $6);
309 $result = $mac;
310 }
311 }
312 }
313 }
314 return $result;
315 }
318 #=== FUNCTION ================================================================
319 # NAME: get_interface_for_ip
320 # PARAMETERS: ip address (i.e. 192.168.0.1)
321 # RETURNS: array: list of interfaces if ip=0.0.0.0, matching interface if found, undef else
322 # DESCRIPTION: Uses proc fs (/proc/net/dev) to get list of interfaces.
323 #===============================================================================
324 sub get_interface_for_ip {
325 my $result;
326 my $ip= shift;
327 if ($ip && length($ip) > 0) {
328 my @ifs= &get_interfaces();
329 if($ip eq "0.0.0.0") {
330 $result = "all";
331 } else {
332 foreach (@ifs) {
333 my $if=$_;
334 if(get_ip($if) eq $ip) {
335 $result = $if;
336 last;
337 }
338 }
339 }
340 }
341 return $result;
342 }
345 #=== FUNCTION ================================================================
346 # NAME: get_ip
347 # PARAMETERS: interface name (i.e. eth0)
348 # RETURNS: (ip address)
349 # DESCRIPTION: Uses ioctl to get ip address directly from system.
350 #===============================================================================
351 sub get_ip {
352 my $ifreq= shift;
353 my $result= "";
354 my $SIOCGIFADDR= 0x8915; # man 2 ioctl_list
355 my $proto= getprotobyname('ip');
357 socket SOCKET, PF_INET, SOCK_DGRAM, $proto
358 or die "socket: $!";
360 if(ioctl SOCKET, $SIOCGIFADDR, $ifreq) {
361 my ($if, $sin) = unpack 'a16 a16', $ifreq;
362 my ($port, $addr) = sockaddr_in $sin;
363 my $ip = inet_ntoa $addr;
365 if ($ip && length($ip) > 0) {
366 $result = $ip;
367 }
368 }
370 return $result;
371 }
374 #=== FUNCTION ================================================================
375 # NAME: get_local_mac_for_remote_ip
376 # PARAMETERS: none (takes server_ip from global variable)
377 # RETURNS: (ip address from interface that is used for communication)
378 # DESCRIPTION: Uses ioctl to get routing table from system, checks which entry
379 # matches (defaultroute last).
380 #===============================================================================
381 sub get_local_mac_for_remote_ip {
382 my $ifreq= shift;
383 my $result= "00:00:00:00:00:00";
384 my $PROC_NET_ROUTE= ('/proc/net/route');
386 open(PROC_NET_ROUTE, "<$PROC_NET_ROUTE")
387 or die "Could not open $PROC_NET_ROUTE";
389 my @ifs = <PROC_NET_ROUTE>;
391 close(PROC_NET_ROUTE);
393 # Eat header line
394 shift @ifs;
395 chomp @ifs;
396 foreach my $line(@ifs) {
397 my ($Iface,$Destination,$Gateway,$Flags,$RefCnt,$Use,$Metric,$Mask,$MTU,$Window,$IRTT)=split(/\s/, $line);
398 my $destination;
399 my $mask;
400 my ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Destination);
401 $destination= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
402 ($d,$c,$b,$a)=unpack('a2 a2 a2 a2', $Mask);
403 $mask= sprintf("%d.%d.%d.%d", hex($a), hex($b), hex($c), hex($d));
404 if(new NetAddr::IP($server_ip)->within(new NetAddr::IP($destination, $mask))) {
405 # destination matches route, save mac and exit
406 $result= &get_mac($Iface);
407 last;
408 }
409 }
412 return $result;
413 }
416 sub new_ldap_config {
417 my ($msg_hash) = @_ ;
418 my $element;
419 my @ldap_uris;
420 my $ldap_base;
421 my @ldap_options;
422 my @pam_options;
423 my @nss_options;
424 my $goto_admin;
425 my $goto_secret;
426 my $admin_base= "";
427 my $department= "";
428 my $unit_tag;
430 # Transform input into array
431 while ( my ($key, $value) = each(%$msg_hash) ) {
432 if ($key =~ /^(source|target|header)$/) {
433 next;
434 }
436 foreach $element (@$value) {
437 if ($key =~ /^ldap_uri$/) {
438 push (@ldap_uris, $element);
439 next;
440 }
441 if ($key =~ /^ldap_base$/) {
442 $ldap_base= $element;
443 next;
444 }
445 if ($key =~ /^goto_admin$/) {
446 $goto_admin= $element;
447 next;
448 }
449 if ($key =~ /^goto_secret$/) {
450 $goto_secret= $element;
451 next;
452 }
453 if ($key =~ /^ldap_cfg$/) {
454 push (@ldap_options, "$element");
455 next;
456 }
457 if ($key =~ /^pam_cfg$/) {
458 push (@pam_options, "$element");
459 next;
460 }
461 if ($key =~ /^nss_cfg$/) {
462 push (@nss_options, "$element");
463 next;
464 }
465 if ($key =~ /^admin_base$/) {
466 $admin_base= $element;
467 next;
468 }
469 if ($key =~ /^department$/) {
470 $department= $element;
471 next;
472 }
473 if ($key =~ /^unit_tag$/) {
474 $unit_tag= $element;
475 next;
476 }
477 }
478 }
480 # Unit tagging enabled?
481 if (defined $unit_tag){
482 push (@pam_options, "pam_filter gosaUnitTag=$unit_tag");
483 push (@nss_options, "nss_base_passwd $admin_base?sub?gosaUnitTag=$unit_tag");
484 push (@nss_options, "nss_base_group $admin_base?sub?gosaUnitTag=$unit_tag");
485 }
487 # Setup ldap.conf
488 my $file1;
489 my $file2;
490 open(file1, "> $ldap_config");
491 print file1 "# This file was automatically generated by gosa-si-client. Do not change.\n";
492 print file1 "URI";
493 foreach $element (@ldap_uris) {
494 print file1 " $element";
495 }
496 print file1 "\nBASE $ldap_base\n";
497 foreach $element (@ldap_options) {
498 print file1 "$element\n";
499 }
500 close (file1);
501 daemon_log("wrote $ldap_config", 5);
503 # Setup pam_ldap.conf / libnss_ldap.conf
504 open(file1, "> $pam_config");
505 open(file2, "> $nss_config");
506 print file1 "# This file was automatically generated by gosa-si-client. Do not change.\n";
507 print file2 "# This file was automatically generated by gosa-si-client. Do not change.\n";
508 print file1 "uri";
509 print file2 "uri";
510 foreach $element (@ldap_uris) {
511 print file1 " $element";
512 print file2 " $element";
513 }
514 print file1 "\nbase $ldap_base\n";
515 print file2 "\nbase $ldap_base\n";
516 foreach $element (@pam_options) {
517 print file1 "$element\n";
518 }
519 foreach $element (@nss_options) {
520 print file2 "$element\n";
521 }
522 close (file2);
523 daemon_log("wrote $nss_config", 5);
524 close (file1);
525 daemon_log("wrote $pam_config", 5);
527 # Create goto.secrets if told so - for compatibility reasons
528 if (defined $goto_admin){
529 open(file1, "> /etc/goto/secret");
530 close(file1);
531 chown(0,0, "/etc/goto/secret");
532 chmod(0600, "/etc/goto/secret");
533 open(file1, "> /etc/goto/secret");
534 print file1 "GOTOADMIN=\"$goto_admin\"\nGOTOSECRET=\"$goto_secret\"\n";
535 close(file1);
536 daemon_log("wrote /etc/goto/secret", 5);
537 }
541 # Write shell based config
542 my $cfg_name= dirname($ldap_config)."/ldap-shell.conf";
543 open(file1, "> $cfg_name");
544 print file1 "LDAP_BASE=\"$ldap_base\"\n";
545 print file1 "ADMIN_BASE=\"$admin_base\"\n";
546 print file1 "DEPARTMENT=\"$department\"\n";
547 print file1 "UNIT_TAG=\"".(defined $unit_tag ? "$unit_tag" : "")."\"\n";
548 print file1 "UNIT_TAG_FILTER=\"".(defined $unit_tag ? "(gosaUnitTag=$unit_tag)" : "")."\"\n";
549 close(file1);
550 daemon_log("wrote $cfg_name", 5);
552 return;
554 }
557 sub create_passwd {
558 my $new_passwd = "";
559 for(my $i=0; $i<31; $i++) {
560 $new_passwd .= ("a".."z","A".."Z",0..9)[int(rand(62))]
561 }
563 return $new_passwd;
564 }
567 sub get_server_addresses {
568 my $domain= shift;
569 my @result;
570 my $dig_cmd= 'dig +nocomments srv _gosad._tcp.'.$domain;
572 my $output= `$dig_cmd 2>&1`;
573 open (PIPE, "$dig_cmd 2>&1 |");
574 while(<PIPE>) {
575 chomp $_;
576 # If it's not a comment
577 if($_ =~ m/^[^;]/) {
578 my @matches= split /\s+/;
580 # Push hostname with port
581 if($matches[3] eq 'SRV') {
582 push @result, $matches[7].':'.$matches[6];
583 } elsif ($matches[3] eq 'A') {
584 my $i=0;
586 # Substitute the hostname with the ip address of the matching A record
587 foreach my $host (@result) {
588 if ((split /\:/, $host)[0] eq $matches[0]) {
589 $result[$i]= $matches[4].':'.(split /\:/, $host)[1];
590 }
591 $i++;
592 }
593 }
594 }
595 }
596 close(PIPE);
597 return @result;
598 }
601 ##=== FUNCTION ================================================================
602 ## NAME: create_ciphering
603 ## PARAMETERS: passwd - string - used to create ciphering
604 ## RETURNS: cipher - object
605 ## DESCRIPTION: creates a Crypt::Rijndael::MODE_CBC object with passwd as key
606 ##===============================================================================
607 #sub create_ciphering {
608 # my ($passwd) = @_;
609 # $passwd = substr(md5_hex("$passwd") x 32, 0, 32);
610 # my $iv = substr(md5_hex('GONICUS GmbH'),0, 16);
611 #
612 # #daemon_log("iv: $iv", 7);
613 # #daemon_log("key: $passwd", 7);
614 # my $my_cipher = Crypt::Rijndael->new($passwd , Crypt::Rijndael::MODE_CBC());
615 # $my_cipher->set_iv($iv);
616 # return $my_cipher;
617 #}
618 #
619 #
620 #sub create_ciphering {
621 # my ($passwd) = @_;
622 # $passwd = substr(md5_hex("$passwd") x 32, 0, 32);
623 # my $iv = substr(md5_hex('GONICUS GmbH'),0, 16);
624 # my $my_cipher = Crypt::Rijndael->new($passwd , Crypt::Rijndael::MODE_CBC());
625 # $my_cipher->set_iv($iv);
626 # return $my_cipher;
627 #}
628 #
629 #
630 #sub encrypt_msg {
631 # my ($msg, $key) = @_;
632 # my $my_cipher = &create_ciphering($key);
633 # {
634 # use bytes;
635 # $msg = "\0"x(16-length($msg)%16).$msg;
636 # }
637 # $msg = $my_cipher->encrypt($msg);
638 # chomp($msg = &encode_base64($msg));
639 # # there are no newlines allowed inside msg
640 # $msg=~ s/\n//g;
641 # return $msg;
642 #}
643 #
644 #
645 #sub decrypt_msg {
646 # my ($msg, $key) = @_ ;
647 # $msg = &decode_base64($msg);
648 # my $my_cipher = &create_ciphering($key);
649 # $msg = $my_cipher->decrypt($msg);
650 # $msg =~ s/\0*//g;
651 # return $msg;
652 #}
655 #=== FUNCTION ================================================================
656 # NAME: send_msg_hash2address
657 # PARAMETERS: msg_hash - hash - xml_hash created with function create_xml_hash
658 # PeerAddr string - socket address to send msg
659 # PeerPort string - socket port, if not included in socket address
660 # RETURNS: nothing
661 # DESCRIPTION: ????
662 #===============================================================================
663 sub send_msg_hash2address {
664 my ($msg_hash, $address, $passwd) = @_ ;
666 # fetch header for logging
667 my $header = @{$msg_hash->{header}}[0];
669 # generate xml string
670 my $msg_xml = &create_xml_string($msg_hash);
672 # encrypt xml msg
673 my $crypted_msg = &encrypt_msg($msg_xml, $passwd);
675 # opensocket
676 my $socket = &open_socket($address);
677 if(not defined $socket){
678 daemon_log("cannot send '$header'-msg to $address , server not reachable", 5);
679 return 1;
680 }
682 # send xml msg
683 print $socket $crypted_msg."\n";
685 close $socket;
687 daemon_log("send '$header'-msg to $address", 1);
688 daemon_log("message:\n$msg_xml", 8);
689 return 0;
690 }
693 sub send_msg_to_target {
694 my ($msg, $address, $encrypt_key, $msg_header) = @_ ;
695 my $error = 0;
697 if( $msg_header ) {
698 $msg_header = "'$msg_header'-";
699 }
700 else {
701 $msg_header = "";
702 }
704 # encrypt xml msg
705 my $crypted_msg = &encrypt_msg($msg, $encrypt_key);
707 # opensocket
708 my $socket = &open_socket($address);
709 if( !$socket ) {
710 daemon_log("cannot send ".$msg_header."msg to $address , host not reachable", 1);
711 $error++;
712 }
714 if( $error == 0 ) {
715 # send xml msg
716 print $socket $crypted_msg."\n";
718 daemon_log("send ".$msg_header."msg to $address", 1);
719 daemon_log("message:\n$msg", 8);
721 }
723 # close socket in any case
724 if( $socket ) {
725 close $socket;
726 }
728 return;
729 }
732 sub open_socket {
733 my ($PeerAddr, $PeerPort) = @_ ;
734 if(defined($PeerPort)){
735 $PeerAddr = $PeerAddr.":".$PeerPort;
736 }
737 my $socket;
738 $socket = new IO::Socket::INET(PeerAddr => $PeerAddr,
739 Porto => "tcp",
740 Type => SOCK_STREAM,
741 Timeout => 5,
742 );
743 if(not defined $socket) {
744 return;
745 }
746 &daemon_log("open_socket: $PeerAddr", 7);
747 return $socket;
748 }
751 #=== FUNCTION ================================================================
752 # NAME: register_at_server
753 # PARAMETERS:
754 # RETURNS:
755 # DESCRIPTION:
756 #===============================================================================
757 sub register_at_gosa_si_server {
758 my ($kernel) = $_[KERNEL];
760 if( $REGISTERED_FLAG == 1 ) {
762 # create new passwd and ciphering object for client-server communication
763 $server_key = &create_passwd();
765 my $events = join( ", ", keys %{$event_hash} );
767 while(1) {
769 # fetch first gosa-si-server from @servers
770 my $server = shift(@servers);
772 if( !$server ) {
773 daemon_log("no gosa-si-server left in list of servers", 1);
774 daemon_log("unable to register at a gosa-si-server, force shutdown", 1);
775 exit(1);
776 }
778 # create registration msg
779 my $register_hash = &create_xml_hash("here_i_am", $client_address, $server);
780 &add_content2xml_hash($register_hash, "new_passwd", $server_key);
781 &add_content2xml_hash($register_hash, "mac_address", $client_mac_address);
782 &add_content2xml_hash($register_hash, "events", $events);
784 # send xml hash to server with general server passwd
785 my $res = &send_msg_hash2address($register_hash, $server, $default_server_key);
786 # if( $res == 1 ) {
787 # next;
788 # }
789 #
790 last;
791 }
792 daemon_log("waiting for msg 'register_at_gosa_si_server'",1);
793 $kernel->delay_set('register_at_gosa_si_server',2);
794 }
795 return;
796 }
799 # my ($rout, $wout, $reg_server);
800 # foreach my $server (@servers) {
801 #
802 # # create msg hash
803 # my $register_hash = &create_xml_hash("here_i_am", $client_address, $server);
804 # &add_content2xml_hash($register_hash, "new_passwd", $new_server_key);
805 # &add_content2xml_hash($register_hash, "mac_address", $client_mac_address);
806 # &add_content2xml_hash($register_hash, "events", $events);
807 #
808 # # send xml hash to server with general server passwd
809 # my $answer = &send_msg_hash2address($register_hash, $server, $server_passwd);
810 #
811 # if ($answer != 0) { next; }
812 #
813 # # waiting for response
814 # daemon_log("waiting for response...\n", 5);
815 # my $nf = select($rout=$rbits, $wout=$wbits, undef, $server_timeout);
816 #
817 # # something is coming in
818 # if(vec $rout, fileno $input_socket, 1) {
819 # my $crypted_msg;
820 # my $client = $input_socket->accept();
821 # my $other_end = getpeername($client);
822 # if(not defined $other_end) {
823 # daemon_log("client cannot be identified: $!\n");
824 # } else {
825 # my ($port, $iaddr) = unpack_sockaddr_in($other_end);
826 # my $actual_ip = inet_ntoa($iaddr);
827 # daemon_log("\naccept client from $actual_ip\n", 5);
828 # my $in_msg = &read_from_socket($client);
829 # if(defined $in_msg){
830 # chomp($in_msg);
831 # $crypted_msg = $in_msg;
832 # } else {
833 # daemon_log("cannot read from $actual_ip\n", 5);
834 # }
835 # }
836 # close($client);
837 #
838 # # validate acknowledge msg from server
839 # $new_server_cipher = &create_ciphering($new_server_passwd);
840 # my $msg_hash;
841 # eval {
842 # my $decrypted_msg = &decrypt_msg($crypted_msg, $new_server_cipher);
843 # daemon_log("decrypted register msg: $decrypted_msg", 5);
844 # $msg_hash = $xml->XMLin($decrypted_msg, ForceArray=>1);
845 # };
846 # if($@) {
847 # daemon_log("ERROR: do not understand the incoming message:" , 5);
848 # daemon_log("$@", 7);
849 # } else {
850 # my $header = @{$msg_hash->{header}}[0];
851 # if($header eq "registered") {
852 # $reg_server = $server;
853 # last;
854 # } elsif($header eq "denied") {
855 # my $reason = (&get_content_from_xml_hash($msg_hash, "denied"))[0];
856 # daemon_log("registration at $server denied: $reason", 1);
857 # } else {
858 # daemon_log("cannot register at $server", 1);
859 # }
860 # }
861 # }
862 # # if no answer arrive, try next server in list
863 #
864 # }
865 #
866 # if(defined $reg_server) {
867 # daemon_log("registered at $reg_server", 1);
868 # } else {
869 # daemon_log("cannot register at any server", 1);
870 # daemon_log("exiting!!!", 1);
871 # exit(1);
872 # }
873 #
874 # # update the global available variables
875 # $server_address = $reg_server;
876 # $server_passwd = $new_server_passwd;
877 # $server_cipher = $new_server_cipher;
880 # return;
881 #}
885 sub check_key_and_xml_validity {
886 my ($crypted_msg, $module_key) = @_;
887 #print STDERR "crypted_msg:$crypted_msg\n";
888 #print STDERR "modul_key:$module_key\n";
890 my $msg;
891 my $msg_hash;
892 eval{
893 $msg = &decrypt_msg($crypted_msg, $module_key);
894 &main::daemon_log("decrypted_msg: \n$msg", 8);
896 $msg_hash = $xml->XMLin($msg, ForceArray=>1);
898 # check header
899 my $header_l = $msg_hash->{'header'};
900 if( 1 != @{$header_l} ) {
901 die 'no or more headers specified';
902 }
903 my $header = @{$header_l}[0];
904 if( 0 == length $header) {
905 die 'header has length 0';
906 }
908 # check source
909 my $source_l = $msg_hash->{'source'};
910 if( 1 != @{$source_l} ) {
911 die 'no or more sources specified';
912 }
913 my $source = @{$source_l}[0];
914 if( 0 == length $source) {
915 die 'source has length 0';
916 }
918 # check target
919 my $target_l = $msg_hash->{'target'};
920 if( 1 != @{$target_l} ) {
921 die 'no or more targets specified ';
922 }
923 my $target = @{$target_l}[0];
924 if( 0 == length $target) {
925 die 'target has length 0 ';
926 }
928 };
929 if($@) {
930 &main::daemon_log("WARNING: do not understand the message or msg is not gosa-si envelope conform:", 5);
931 &main::daemon_log("$@", 8);
932 }
934 return ($msg, $msg_hash);
935 }
938 sub import_events {
940 if (not -e $event_dir) {
941 daemon_log("ERROR: cannot find directory or directory is not readable: $event_dir", 1);
942 }
943 opendir (DIR, $event_dir) or die "ERROR while loading gosa-si-events from directory $event_dir : $!\n";
945 while (defined (my $event = readdir (DIR))) {
946 if( $event eq "." || $event eq ".." ) { next; }
948 eval{ require $event; };
949 if( $@ ) {
950 daemon_log("import of event module '$event' failed", 1);
951 daemon_log("$@", 8);
952 next;
953 }
955 $event =~ /(\S*?).pm$/;
956 my $event_module = $1;
957 my $events_l = eval( $1."::get_events()") ;
958 foreach my $event_name (@{$events_l}) {
959 $event_hash->{$event_name} = $event_module;
960 }
962 }
963 }
966 sub server_input {
967 my ($heap,$input,$wheel) = @_[HEAP, ARG0, ARG1];
968 my $error = 0;
969 my $answer;
971 daemon_log("Incoming msg:\n$input\n", 8);
973 my ($msg, $msg_hash) = &check_key_and_xml_validity($input, $server_key);
974 if( (!$msg) || (!$msg_hash) ) {
975 daemon_log("Deciphering of incoming msg failed", 5);
976 $error++;
977 }
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} ) {
986 # a event exists with the header as name
987 daemon_log("found event '$header' at event-module '".$event_hash->{$header}."'", 5);
988 no strict 'refs';
989 $answer = &{$event_hash->{$header}."::$header"}($msg, $msg_hash);
990 }
991 # else {
992 # # maybe header is a core function
993 # daemon_log("WARNING: no event assigned to msg $header", 5);
994 # if ($header eq 'new_ldap_config') { if ($ldap_enabled == 1) {&new_ldap_config($msg_hash)}}
995 # elsif ($header eq 'ping') { &got_ping($msg_hash) }
996 # elsif ($header eq 'wake_up') { &execute_event($msg_hash)}
997 # elsif ($header eq 'new_passwd') { &new_passwd()}
998 # elsif ($header eq 'compute_hardware') { &compute_hardware() }
999 # else { daemon_log("ERROR: no core function assigned to msg $header", 5) }
1000 # }
1001 }
1003 ########
1004 # answer
1005 if( $answer ) {
1006 if( $answer =~ "<header>registered</header>") {
1007 $REGISTERED_FLAG = 0;
1008 }
1009 else {
1010 &send_msg_to_address($answer, $server_address, $server_key);
1011 }
1012 }
1014 return;
1015 }
1017 #==== MAIN = main ==============================================================
1018 # parse commandline options
1019 Getopt::Long::Configure( "bundling" );
1020 GetOptions("h|help" => \&usage,
1021 "c|config=s" => \$cfg_file,
1022 "f|foreground" => \$foreground,
1023 "v|verbose+" => \$verbose,
1024 );
1026 # read and set config parameters
1027 &check_cmdline_param ;
1028 &read_configfile($cfg_file, %cfg_defaults);
1029 &check_pid;
1032 # forward error messages to logfile
1033 if ( ! $foreground ) {
1034 open STDIN, '/dev/null' or die "Can’t read /dev/null: $!";
1035 open STDOUT, '>>/dev/null' or die "Can't write to /dev/null: $!";
1036 open STDERR, '>>/dev/null' or die "Can't write to /dev/null: $!";
1037 }
1039 # Just fork, if we are not in foreground mode
1040 if( ! $foreground ) {
1041 chdir '/' or die "Can't chdir to /: $!";
1042 $pid = fork;
1043 setsid or die "Can't start a new session: $!";
1044 umask 0;
1045 }
1046 else {
1047 $pid = $$;
1048 }
1050 # Do something useful - put our PID into the pid_file
1051 if( 0 != $pid ) {
1052 open( LOCK_FILE, ">$pid_file" );
1053 print LOCK_FILE "$pid\n";
1054 close( LOCK_FILE );
1055 if( !$foreground ) {
1056 exit( 0 )
1057 };
1058 }
1060 daemon_log(" ", 1);
1061 daemon_log("$0 started!", 1);
1063 # delete old DBsqlite lock files
1064 system('rm -f /tmp/gosa_si_lock*gosa-si-client*');
1067 # complete client_address
1068 $client_address = $client_ip.":".$client_port;
1071 # detect own ip and mac address
1072 my $network_interface= &get_interface_for_ip($client_ip);
1073 $client_mac_address= &get_mac($network_interface);
1074 daemon_log("gosa-si-client ip address detected: $client_ip", 1);
1075 daemon_log("gosa-si-client mac address detected: $client_mac_address", 1);
1078 # import events
1079 &import_events();
1082 # create socket for incoming xml messages
1083 POE::Component::Server::TCP->new(
1084 Alias => 'gosa-si-client',
1085 Port => $client_port,
1086 ClientInput => \&server_input,
1087 );
1088 daemon_log("start socket for incoming xml messages at port '$client_port' ", 1);
1091 # prepare variables
1092 if (defined $server_ip && defined $server_port) {
1093 $server_address = $server_ip.":".$server_port;
1094 }
1095 $xml = new XML::Simple();
1096 $default_server_key = $server_key;
1099 # find all possible gosa-si-servers in DNS
1100 if (defined $server_domain) {
1101 my @tmp_servers = &get_server_addresses($server_domain);
1102 foreach my $server (@tmp_servers) {
1103 unshift(@servers, $server);
1104 }
1105 }
1106 # add gosa-si-server address from config file at first position of server list
1107 if (defined $server_address) {
1108 unshift(@servers, $server_address);
1109 }
1110 my $servers_string = join(", ", @servers);
1111 daemon_log("found servers in configuration file and via DNS: $servers_string", 5);
1114 POE::Session->create(
1115 inline_states => {
1116 _start => \®ister_at_gosa_si_server ,
1117 register_at_gosa_si_server => \®ister_at_gosa_si_server,
1118 }
1119 );
1121 POE::Kernel->run();
1122 exit;