Code

Updated gofon images.
[gosa.git] / gosa-si / gosa-si-server
index 981870a962f8cf8bffc3ba564fca5269ec564dcd..ada883ba08d8c225d9040d5cb39a4217c8586dd2 100755 (executable)
 #     REVISION:  ---
 #===============================================================================
 
+
+# TODO
+#
+# max_children wird momentan nicht mehr verwendet, jede eingehende nachricht bekommt ein eigenes POE child
+
 use strict;
 use warnings;
 use Getopt::Long;
@@ -39,37 +44,66 @@ use Data::Dumper;
 use Sys::Syslog qw( :DEFAULT setlogsock);
 use Cwd;
 use File::Spec;
+use File::Basename;
+use File::Find;
+use File::Copy;
+use File::Path;
 use GOSA::DBsqlite;
-use POE qw(Component::Server::TCP);
+use GOSA::GosaSupportDaemon;
+use POE qw(Component::Server::TCP Wheel::Run Filter::Reference);
+use Net::LDAP;
+use Net::LDAP::Util qw(:escape);
+use Time::HiRes qw( usleep);
+use DateTime;
 
 my $modules_path = "/usr/lib/gosa-si/modules";
 use lib "/usr/lib/gosa-si/modules";
 
-my (%cfg_defaults, $foreground, $verbose, $ping_timeout);
-my ($bus, $msg_to_bus, $bus_cipher);
-my ($server, $server_mac_address);
-my ($gosa_server, $job_queue_timeout, $job_queue_table_name, $job_queue_file_name,$job_queue_loop_delay);
-my ($known_modules, $known_clients_file_name, $known_server_file_name);
-my ($pid_file, $procid, $pid, $log_file);
-my ($arp_activ, $arp_fifo);
+# revision number of server and program name
+my $server_version = '$HeadURL: https://oss.gonicus.de/repositories/gosa/trunk/gosa-si/gosa-si-server $:$Rev: 10826 $';
+my $server_headURL;
+my $server_revision;
+my $server_status;
+our $prg= basename($0);
+
+our $global_kernel;
+my ($foreground, $ping_timeout);
+my ($server);
+my ($gosa_server, $job_queue_timeout, $job_queue_loop_delay);
+my ($messaging_db_loop_delay);
+my ($known_modules);
+my ($procid, $pid);
+my ($arp_fifo);
 my ($xml);
-
+my $sources_list;
+my $max_clients;
+my %repo_files=();
+my $repo_path;
+my %repo_dirs=();
 # variables declared in config file are always set to 'our'
 our (%cfg_defaults, $log_file, $pid_file, 
-    $server_ip, $server_port, $SIPackages_key, 
-    $arp_activ, 
+    $server_ip, $server_port, $ClientPackages_key, 
+    $arp_activ, $gosa_unit_tag,
     $GosaPackages_key, $gosa_ip, $gosa_port, $gosa_timeout,
+    $foreign_server_string, $server_domain, $ServerPackages_key, $foreign_servers_register_delay,
+    $wake_on_lan_passwd, $job_synchronization, $modified_jobs_loop_delay,
 );
 
 # additional variable which should be globaly accessable
 our $server_address;
-our $bus_address;
+our $server_mac_address;
 our $gosa_address;
-our $no_bus;
 our $no_arp;
 our $verbose;
 our $forground;
 our $cfg_file;
+our ($ldap_uri, $ldap_base, $ldap_admin_dn, $ldap_admin_password, $ldap_server_dn);
+
+# dak variables
+our $dak_base_directory;
+our $dak_signing_keys_directory;
+our $dak_queue_directory;
+our $dak_user;
 
 # specifies the verbosity of the daemon_log
 $verbose = 0 ;
@@ -80,41 +114,150 @@ $foreground = 0 ;
 # specifies the timeout seconds while checking the online status of a registrating client
 $ping_timeout = 5;
 
-$no_bus = 0;
-
 $no_arp = 0;
-
-# name of table for storing gosa jobs
-our $job_queue_table_name = 'jobs';
+my $packages_list_under_construction = "/tmp/packages_list_creation_in_progress";
+my @packages_list_statements;
+my $watch_for_new_jobs_in_progress = 0;
+
+# holds all incoming decrypted messages
+our $incoming_db;
+our $incoming_tn = 'incoming';
+my $incoming_file_name;
+my @incoming_col_names = ("id INTEGER PRIMARY KEY", 
+        "timestamp DEFAULT 'none'", 
+        "headertag DEFAULT 'none'",
+               "targettag DEFAULT 'none'",
+        "xmlmessage DEFAULT 'none'",
+        "module DEFAULT 'none'",
+        "sessionid DEFAULT '0'",
+        );
+
+# holds all gosa jobs
 our $job_db;
-
-# holds all other gosa-sd as well as the gosa-sd-bus
+our $job_queue_tn = 'jobs';
+my $job_queue_file_name;
+my @job_queue_col_names = ("id INTEGER PRIMARY KEY", 
+               "timestamp DEFAULT 'none'", 
+               "status DEFAULT 'none'", 
+               "result DEFAULT 'none'", 
+               "progress DEFAULT 'none'", 
+        "headertag DEFAULT 'none'", 
+               "targettag DEFAULT 'none'", 
+               "xmlmessage DEFAULT 'none'", 
+               "macaddress DEFAULT 'none'",
+               "plainname DEFAULT 'none'",
+        "siserver DEFAULT 'none'",
+        "modified DEFAULT '0'",
+               );
+
+# holds all other gosa-si-server
 our $known_server_db;
+our $known_server_tn = "known_server";
+my $known_server_file_name;
+my @known_server_col_names = ("hostname", "status", "hostkey", "timestamp");
 
 # holds all registrated clients
 our $known_clients_db;
+our $known_clients_tn = "known_clients";
+my $known_clients_file_name;
+my @known_clients_col_names = ("hostname", "status", "hostkey", "timestamp", "macaddress", "events", "keylifetime");
+
+# holds all registered clients at a foreign server
+our $foreign_clients_db;
+our $foreign_clients_tn = "foreign_clients"; 
+my $foreign_clients_file_name;
+my @foreign_clients_col_names = ("hostname", "macaddress", "regserver", "timestamp");
+
+# holds all logged in user at each client 
+our $login_users_db;
+our $login_users_tn = "login_users";
+my $login_users_file_name;
+my @login_users_col_names = ("client", "user", "timestamp");
+
+# holds all fai server, the debian release and tag
+our $fai_server_db;
+our $fai_server_tn = "fai_server"; 
+my $fai_server_file_name;
+our @fai_server_col_names = ("timestamp", "server", "release", "sections", "tag"); 
+
+our $fai_release_db;
+our $fai_release_tn = "fai_release"; 
+my $fai_release_file_name;
+our @fai_release_col_names = ("timestamp", "release", "class", "type", "state"); 
+
+# holds all packages available from different repositories
+our $packages_list_db;
+our $packages_list_tn = "packages_list";
+my $packages_list_file_name;
+our @packages_list_col_names = ("distribution", "package", "version", "section", "description", "template", "timestamp");
+my $outdir = "/tmp/packages_list_db";
+my $arch = "i386"; 
+
+# holds all messages which should be delivered to a user
+our $messaging_db;
+our $messaging_tn = "messaging"; 
+our @messaging_col_names = ("id INTEGER", "subject", "message_from", "message_to", 
+        "flag", "direction", "delivery_time", "message", "timestamp" );
+my $messaging_file_name;
+
+# path to directory to store client install log files
+our $client_fai_log_dir = "/var/log/fai"; 
+
+# queue which stores taskes until one of the $max_children children are ready to process the task
+my @tasks = qw();
+my @msgs_to_decrypt = qw();
+my $max_children = 2;
+
 
 %cfg_defaults = (
 "general" => {
-    "log_file" => [\$log_file, "/var/run/".$0.".log"],
-    "pid_file" => [\$pid_file, "/var/run/".$0.".pid"],
+    "log-file" => [\$log_file, "/var/run/".$prg.".log"],
+    "pid-file" => [\$pid_file, "/var/run/".$prg.".pid"],
     },
 "server" => {
-#    "ip" => [\$server_ip, "0.0.0.0"],
     "port" => [\$server_port, "20081"],
-    "known_clients_file_name" => [\$known_clients_file_name, '/var/lib/gosa-si/clients.db' ],
-    "known_server_file_name" => [\$known_server_file_name, '/var/lib/gosa-si/servers.db'],
+    "known-clients"        => [\$known_clients_file_name, '/var/lib/gosa-si/clients.db' ],
+    "known-servers"        => [\$known_server_file_name, '/var/lib/gosa-si/servers.db'],
+    "incoming"             => [\$incoming_file_name, '/var/lib/gosa-si/incoming.db'],
+    "login-users"          => [\$login_users_file_name, '/var/lib/gosa-si/users.db'],
+    "fai-server"           => [\$fai_server_file_name, '/var/lib/gosa-si/fai_server.db'],
+    "fai-release"          => [\$fai_release_file_name, '/var/lib/gosa-si/fai_release.db'],
+    "packages-list"        => [\$packages_list_file_name, '/var/lib/gosa-si/packages.db'],
+    "messaging"            => [\$messaging_file_name, '/var/lib/gosa-si/messaging.db'],
+    "foreign-clients"      => [\$foreign_clients_file_name, '/var/lib/gosa-si/foreign_clients.db'],
+    "source-list"          => [\$sources_list, '/etc/apt/sources.list'],
+    "repo-path"            => [\$repo_path, '/srv/www/repository'],
+    "ldap-uri"             => [\$ldap_uri, ""],
+    "ldap-base"            => [\$ldap_base, ""],
+    "ldap-admin-dn"        => [\$ldap_admin_dn, ""],
+    "ldap-admin-password"  => [\$ldap_admin_password, ""],
+    "gosa-unit-tag"        => [\$gosa_unit_tag, ""],
+    "max-clients"          => [\$max_clients, 10],
+    "wol-password"           => [\$wake_on_lan_passwd, ""],
     },
 "GOsaPackages" => {
     "ip" => [\$gosa_ip, "0.0.0.0"],
     "port" => [\$gosa_port, "20082"],
-    "job_queue_file_name" => [\$job_queue_file_name, '/var/lib/gosa-si/jobs.db'],
-    "job_queue_loop_delay" => [\$job_queue_loop_delay, 3],
+    "job-queue" => [\$job_queue_file_name, '/var/lib/gosa-si/jobs.db'],
+    "job-queue-loop-delay" => [\$job_queue_loop_delay, 3],
+    "messaging-db-loop-delay" => [\$messaging_db_loop_delay, 3],
     "key" => [\$GosaPackages_key, "none"],
+       "dak-base" => [\$dak_base_directory, "/srv/archive"],
+       "dak-keyring" => [\$dak_signing_keys_directory, "/srv/archive/keyrings"],
+       "dak-queue" => [\$dak_queue_directory, "/srv/archive/queue"],
+       "dak-user" => [\$dak_user, "deb-dak"],
     },
-"SIPackages" => {
-    "key" => [\$SIPackages_key, "none"],
+"ClientPackages" => {
+    "key" => [\$ClientPackages_key, "none"],
     },
+"ServerPackages"=> {
+    "address"      => [\$foreign_server_string, ""],
+    "domain"  => [\$server_domain, ""],
+    "key"     => [\$ServerPackages_key, "none"],
+    "key-lifetime" => [\$foreign_servers_register_delay, 120],
+    "job-synchronization-enabled" => [\$job_synchronization, "true"],
+    "synchronization-loop" => [\$modified_jobs_loop_delay, 5],
+}
 );
 
 
@@ -126,14 +269,13 @@ our $known_clients_db;
 #===============================================================================
 sub usage {
     print STDERR << "EOF" ;
-usage: $0 [-hvf] [-c config]
+usage: $prg [-hvf] [-c config]
 
            -h        : this (help) message
            -c <file> : config file
            -f        : foreground, process will not be forked to background
            -v        : be verbose (multiple to increase verbosity)
-           -no-bus   : starts $0 without connection to bus
-           -no-arp   : starts $0 without connection to arp module
+           -no-arp   : starts $prg without connection to arp module
  
 EOF
     print "\n" ;
@@ -148,7 +290,7 @@ EOF
 #===============================================================================
 sub read_configfile {
     my $cfg;
-    if( defined( $cfg_file) && ( length($cfg_file) > 0 )) {
+    if( defined( $cfg_file) && ( (-s $cfg_file) > 0 )) {
         if( -r $cfg_file ) {
             $cfg = Config::IniFiles->new( -file => $cfg_file );
         } else {
@@ -181,55 +323,33 @@ sub daemon_log {
     if(not defined $level) { $level = 1 }
     if(defined $log_file){
         open(LOG_HANDLE, ">>$log_file");
+        chmod 0600, $log_file;
         if(not defined open( LOG_HANDLE, ">>$log_file" )) {
             print STDERR "cannot open $log_file: $!";
-            return }
-            chomp($msg);
-            if($level <= $verbose){
-                my ($seconds, $minutes, $hours, $monthday, $month,
-                        $year, $weekday, $yearday, $sommertime) = localtime(time);
-                $hours = $hours < 10 ? $hours = "0".$hours : $hours;
-                $minutes = $minutes < 10 ? $minutes = "0".$minutes : $minutes;
-                $seconds = $seconds < 10 ? $seconds = "0".$seconds : $seconds;
-                my @monthnames = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
-                $month = $monthnames[$month];
-                $monthday = $monthday < 10 ? $monthday = "0".$monthday : $monthday;
-                $year+=1900;
-                my $name = $0;
-                $name =~ s/\.\///;
-
-                my $log_msg = "$month $monthday $hours:$minutes:$seconds $name $msg\n";
-                print LOG_HANDLE $log_msg;
-                if( $foreground ) { 
-                    print STDERR $log_msg;
-                }
+            return 
+        }
+        chomp($msg);
+        $msg =~s/\n//g;   # no newlines are allowed in log messages, this is important for later log parsing
+        if($level <= $verbose){
+            my ($seconds, $minutes, $hours, $monthday, $month,
+                    $year, $weekday, $yearday, $sommertime) = localtime(time);
+            $hours = $hours < 10 ? $hours = "0".$hours : $hours;
+            $minutes = $minutes < 10 ? $minutes = "0".$minutes : $minutes;
+            $seconds = $seconds < 10 ? $seconds = "0".$seconds : $seconds;
+            my @monthnames = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
+            $month = $monthnames[$month];
+            $monthday = $monthday < 10 ? $monthday = "0".$monthday : $monthday;
+            $year+=1900;
+            my $name = $prg;
+
+            my $log_msg = "$month $monthday $hours:$minutes:$seconds $name $msg\n";
+            print LOG_HANDLE $log_msg;
+            if( $foreground ) { 
+                print STDERR $log_msg;
             }
+        }
         close( LOG_HANDLE );
     }
-#log into syslog
-#    my ($msg, $level, $facility) = @_;
-#    if(not defined $msg) {return}
-#    if(not defined $level) {$level = "info"}
-#    if(not defined $facility) {$facility = "LOG_DAEMON"}
-#    openlog($0, "pid,cons,", $facility);
-#    syslog($level, $msg);
-#    closelog;
-#    return;
-}
-
-
-sub get_time {
-    my ($seconds, $minutes, $hours, $monthday, $month,
-            $year, $weekday, $yearday, $sommertime) = localtime(time);
-    $hours = $hours < 10 ? $hours = "0".$hours : $hours;
-    $minutes = $minutes < 10 ? $minutes = "0".$minutes : $minutes;
-    $seconds = $seconds < 10 ? $seconds = "0".$seconds : $seconds;
-    $month+=1;
-    $month = $month < 10 ? $month = "0".$month : $month;
-    $monthday = $monthday < 10 ? $monthday = "0".$monthday : $monthday;
-    $year+=1900;
-    return "$year$month$monthday$hours$minutes$seconds";
-
 }
 
 
@@ -273,7 +393,8 @@ sub check_pid {
             chomp( $pid );
             if( -f "/proc/$pid/stat" ) {
                 my($stat) = `cat /proc/$pid/stat` =~ m/$pid \((.+)\).*/;
-                if( $0 eq $stat ) {
+                if( $stat ) {
+                                       daemon_log("ERROR: Already running",1);
                     close( LOCK_FILE );
                     exit -1;
                 }
@@ -318,7 +439,7 @@ sub import_modules {
     daemon_log(" ", 1);
 
     if (not -e $modules_path) {
-        daemon_log("ERROR: cannot find directory or directory is not readable: $modules_path", 1);   
+        daemon_log("ERROR: cannot find directory or directory is not readable: $modules_path", 1);   
     }
 
     opendir (DIR, $modules_path) or die "ERROR while loading modules from directory $modules_path : $!\n";
@@ -336,7 +457,7 @@ sub import_modules {
         
         eval { require $file; };
         if ($@) {
-            daemon_log("ERROR: gosa-si-server could not load module $file", 1);
+            daemon_log("ERROR: gosa-si-server could not load module $file", 1);
             daemon_log("$@", 5);
                } else {
                        my $info = eval($mod_name.'::get_module_info()');
@@ -344,85 +465,173 @@ sub import_modules {
                        if( $info ) {
                                my ($input_address, $input_key, $input, $input_active, $input_type) = @{$info};
                                $known_modules->{$mod_name} = $info;
-                               daemon_log("module $mod_name loaded", 1);
+                               daemon_log("0 INFO: module $mod_name loaded", 5);
                        }
                }
     }   
     close (DIR);
 }
 
+#===  FUNCTION  ================================================================
+#         NAME:  password_check
+#   PARAMETERS:  nothing
+#      RETURNS:  nothing
+#  DESCRIPTION:  escalates an critical error if two modules exist which are avaialable by 
+#                the same password
+#===============================================================================
+sub password_check {
+    my $passwd_hash = {};
+    while (my ($mod_name, $mod_info) = each %$known_modules) {
+        my $mod_passwd = @$mod_info[1];
+        if (not defined $mod_passwd) { next; }
+        if (not exists $passwd_hash->{$mod_passwd}) {
+            $passwd_hash->{$mod_passwd} = $mod_name;
+
+        # escalates critical error
+        } else {
+            &daemon_log("0 ERROR: two loaded modules do have the same password. Please modify the 'key'-parameter in config file");
+            &daemon_log("0 ERROR: module='$mod_name' and module='".$passwd_hash->{$mod_passwd}."'");
+            exit( -1 );
+        }
+    }
+
+}
+
 
 #===  FUNCTION  ================================================================
 #         NAME:  sig_int_handler
 #   PARAMETERS:  signal - string - signal arose from system
-#      RETURNS:  noting
+#      RETURNS:  nothing
 #  DESCRIPTION:  handels tasks to be done befor signal becomes active
 #===============================================================================
 sub sig_int_handler {
     my ($signal) = @_;
 
+#      if (defined($ldap_handle)) {
+#              $ldap_handle->disconnect;
+#      }
+    # TODO alle verbliebenden ldap verbindungen aus allen heaps beenden
+    
+
     daemon_log("shutting down gosa-si-server", 1);
-    exit(1);
+    system("kill `ps -C gosa-si-server -o pid=`");
 }
 $SIG{INT} = \&sig_int_handler;
 
 
-
 sub check_key_and_xml_validity {
-    my ($crypted_msg, $module_key) = @_;
-#print STDERR "crypted_msg:$crypted_msg\n";
-#print STDERR "modul_key:$module_key\n";
-
+    my ($crypted_msg, $module_key, $session_id) = @_;
     my $msg;
     my $msg_hash;
+    my $error_string;
     eval{
         $msg = &decrypt_msg($crypted_msg, $module_key);
-        &main::daemon_log("decrypted_msg: \n$msg", 8);
 
+        if ($msg =~ /<xml>/i){
+            $msg =~ s/\s+/ /g;  # just for better daemon_log
+            daemon_log("$session_id DEBUG: decrypted_msg: \n$msg", 8);
+            $msg_hash = $xml->XMLin($msg, ForceArray=>1);
+
+            ##############
+            # check header
+            if( not exists $msg_hash->{'header'} ) { die "no header specified"; }
+            my $header_l = $msg_hash->{'header'};
+            if( 1 > @{$header_l} ) { die 'empty header tag'; }
+            if( 1 < @{$header_l} ) { die 'more than one header specified'; }
+            my $header = @{$header_l}[0];
+            if( 0 == length $header) { die 'empty string in header tag'; }
+
+            ##############
+            # check source
+            if( not exists $msg_hash->{'source'} ) { die "no source specified"; }
+            my $source_l = $msg_hash->{'source'};
+            if( 1 > @{$source_l} ) { die 'empty source tag'; }
+            if( 1 < @{$source_l} ) { die 'more than one source specified'; }
+            my $source = @{$source_l}[0];
+            if( 0 == length $source) { die 'source error'; }
+
+            ##############
+            # check target
+            if( not exists $msg_hash->{'target'} ) { die "no target specified"; }
+            my $target_l = $msg_hash->{'target'};
+            if( 1 > @{$target_l} ) { die 'empty target tag'; }
+        }
+    };
+    if($@) {
+        daemon_log("$session_id DEBUG: do not understand the message: $@", 7);
+        $msg = undef;
+        $msg_hash = undef;
+    }
+
+    return ($msg, $msg_hash);
+}
+
+
+sub check_outgoing_xml_validity {
+    my ($msg, $session_id) = @_;
+
+    my $msg_hash;
+    eval{
         $msg_hash = $xml->XMLin($msg, ForceArray=>1);
 
+        ##############
         # check header
         my $header_l = $msg_hash->{'header'};
         if( 1 != @{$header_l} ) {
-            die'header error';
+            die 'no or more than one headers specified';
         }
         my $header = @{$header_l}[0];
         if( 0 == length $header) {
-            die 'header error';
+            die 'header has length 0';
         }
 
+        ##############
         # check source
         my $source_l = $msg_hash->{'source'};
         if( 1 != @{$source_l} ) {
-            die'source error';
+            die 'no or more than 1 sources specified';
         }
         my $source = @{$source_l}[0];
         if( 0 == length $source) {
-            die 'source error';
+            die 'source has length 0';
         }
-
-        # check target
+        unless( $source =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ||
+                $source =~ /^GOSA$/i ) {
+            die "source '$source' is neither a complete ip-address with port nor 'GOSA'";
+        }
+        
+        ##############
+        # check target  
         my $target_l = $msg_hash->{'target'};
-        if( 1 != @{$target_l} ) {
-            die'target error';
+        if( 0 == @{$target_l} ) {
+            die "no targets specified";
         }
-        my $target = @{$target_l}[0];
-        if( 0 == length $target) {
-            die 'target error';
+        foreach my $target (@$target_l) {
+            if( 0 == length $target) {
+                die "target has length 0";
+            }
+            unless( $target =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+$/ ||
+                    $target =~ /^GOSA$/i ||
+                    $target =~ /^\*$/ ||
+                    $target =~ /KNOWN_SERVER/i ||
+                    $target =~ /JOBDB/i ||
+                    $target =~ /^([0-9a-f]{2}:[0-9a-f]{2}:[0-9a-f]{2}:[0-9a-f]{2}:[0-9a-f]{2}:[0-9a-f]{2})$/i ){
+                die "target '$target' is not a complete ip-address with port or a valid target name or a mac-address";
+            }
         }
-
     };
     if($@) {
-        &main::daemon_log("WARNING: do not understand the message", 5);
-        &main::daemon_log("$@", 8);
+        daemon_log("$session_id ERROR: outgoing msg is not gosa-si envelope conform: ", 1);
+        daemon_log("$@ ".(defined($msg) && length($msg)>0)?$msg:"Empty Message", 1);
+        $msg_hash = undef;
     }
 
-    return ($msg, $msg_hash);
+    return ($msg_hash);
 }
 
 
 sub input_from_known_server {
-    my ($input, $remote_ip) = @_ ;  
+    my ($input, $remote_ip, $session_id) = @_ ;  
     my ($msg, $msg_hash, $module);
 
     my $sql_statement= "SELECT * FROM known_server";
@@ -434,26 +643,26 @@ sub input_from_known_server {
             next;
         }
         my $host_key = $hit->{hostkey};
-        daemon_log("SIPackages: known_server host_name: $host_name", 7);
-        daemon_log("SIPackages: known_server host_key: $host_key", 7);
+        daemon_log("$session_id DEBUG: input_from_known_server: host_name: $host_name", 7);
+        daemon_log("$session_id DEBUG: input_from_known_server: host_key: $host_key", 7);
 
         # check if module can open msg envelope with module key
-        my ($tmp_msg, $tmp_msg_hash) = &check_key_and_xml_validity($input, $host_key);
+        my ($tmp_msg, $tmp_msg_hash) = &check_key_and_xml_validity($input, $host_key, $session_id);
         if( (!$tmp_msg) || (!$tmp_msg_hash) ) {
-            daemon_log("SIPackages: deciphering raise error", 7);
+            daemon_log("$session_id DEBUG: input_from_known_server: deciphering raise error", 7);
             daemon_log("$@", 8);
             next;
         }
         else {
             $msg = $tmp_msg;
             $msg_hash = $tmp_msg_hash;
-            $module = "SIPackages";
+            $module = "ServerPackages";
             last;
         }
     }
 
     if( (!$msg) || (!$msg_hash) || (!$module) ) {
-        daemon_log("Incoming message is not from a known server", 3);
+        daemon_log("$session_id DEBUG: Incoming message is not from a known server", 7);
     }
   
     return ($msg, $msg_hash, $module);
@@ -461,7 +670,7 @@ sub input_from_known_server {
 
 
 sub input_from_known_client {
-    my ($input, $remote_ip) = @_ ;  
+    my ($input, $remote_ip, $session_id) = @_ ;  
     my ($msg, $msg_hash, $module);
 
     my $sql_statement= "SELECT * FROM known_clients";
@@ -469,28 +678,28 @@ sub input_from_known_client {
     while( my ($hit_num, $hit) = each %{ $query_res } ) {    
         my $host_name = $hit->{hostname};
         if( not $host_name =~ /^$remote_ip:\d*$/) {
-            next;
+                next;
                }
         my $host_key = $hit->{hostkey};
-        &daemon_log("SIPackages: known_client host_name: $host_name", 7);
-        &daemon_log("SIPackages: known_client host_key: $host_key", 7);
+        &daemon_log("$session_id DEBUG: input_from_known_client: host_name: $host_name", 7);
+        &daemon_log("$session_id DEBUG: input_from_known_client: host_key: $host_key", 7);
 
         # check if module can open msg envelope with module key
-        ($msg, $msg_hash) = &check_key_and_xml_validity($input, $host_key);
+        ($msg, $msg_hash) = &check_key_and_xml_validity($input, $host_key, $session_id);
 
         if( (!$msg) || (!$msg_hash) ) {
-            &daemon_log("SIPackages: deciphering raise error", 7);
+            &daemon_log("$session_id DEGUG: input_from_known_client: deciphering raise error", 7);
             &daemon_log("$@", 8);
             next;
         }
         else {
-            $module = "SIPackages";
+            $module = "ClientPackages";
             last;
         }
     }
 
     if( (!$msg) || (!$msg_hash) || (!$module) ) {
-        &daemon_log("Incoming message is not from a known client", 3);
+        &daemon_log("$session_id DEBUG: Incoming message is not from a known client", 7);
     }
 
     return ($msg, $msg_hash, $module);
@@ -499,29 +708,28 @@ sub input_from_known_client {
 
 sub input_from_unknown_host {
     no strict "refs";
-    my ($input) = @_ ;
+    my ($input, $session_id) = @_ ;
     my ($msg, $msg_hash, $module);
+    my $error_string;
     
        my %act_modules = %$known_modules;
+       
+    while( my ($mod, $info) = each(%act_modules)) {
 
-       while( my ($mod, $info) = each(%act_modules)) {
         # check a key exists for this module
-
-
-print STDERR "SIPackages_key:$SIPackages_key\n";
-
-
         my $module_key = ${$mod."_key"};
-        if( ! $module_key ) {
-            daemon_log("ERROR: no key specified in config file for $mod", 1);
+        if( not defined $module_key ) {
+            if( $mod eq 'ArpHandler' ) {
+                next;
+            }
+            daemon_log("$session_id ERROR: no key specified in config file for $mod", 1);
             next;
         }
-        daemon_log("$mod: $module_key", 5);
+        daemon_log("$session_id DEBUG: $mod: $module_key", 7);
 
         # check if module can open msg envelope with module key
-        ($msg, $msg_hash) = &check_key_and_xml_validity($input, $module_key);
-        if( (!$msg) || (!$msg_hash) ) {
-            #daemon_log("$mod: deciphering failed", 5);
+        ($msg, $msg_hash) = &check_key_and_xml_validity($input, $module_key, $session_id);
+        if( (not defined $msg) || (not defined $msg_hash) ) {
             next;
         }
         else {
@@ -531,12 +739,13 @@ print STDERR "SIPackages_key:$SIPackages_key\n";
     }
 
     if( (!$msg) || (!$msg_hash) || (!$module)) {
-        daemon_log("Incoming message is not from a unknown host", 5);
+        daemon_log("$session_id DEBUG: Incoming message is not from an unknown host", 7);
     }
 
     return ($msg, $msg_hash, $module);
 }
 
+
 sub create_ciphering {
     my ($passwd) = @_;
        if((!defined($passwd)) || length($passwd)==0) {
@@ -553,10 +762,12 @@ sub create_ciphering {
 sub encrypt_msg {
     my ($msg, $key) = @_;
     my $my_cipher = &create_ciphering($key);
+    my $len;
     {
-      use bytes;
-      $msg = "\0"x(16-length($msg)%16).$msg;
+           use bytes;
+           $len= 16-length($msg)%16;
     }
+    $msg = "\0"x($len).$msg;
     $msg = $my_cipher->encrypt($msg);
     chomp($msg = &encode_base64($msg));
     # there are no newlines allowed inside msg
@@ -566,6 +777,7 @@ sub encrypt_msg {
 
 
 sub decrypt_msg {
+
     my ($msg, $key) = @_ ;
     $msg = &decode_base64($msg);
     my $my_cipher = &create_ciphering($key);
@@ -581,7 +793,7 @@ sub get_encrypt_key {
     my $error = 0;
 
     # target can be in known_server
-    if( !$encrypt_key ) {
+    if( not defined $encrypt_key ) {
         my $sql_statement= "SELECT * FROM known_server WHERE hostname='$target'";
         my $query_res = $known_server_db->select_dbentry( $sql_statement ); 
         while( my ($hit_num, $hit) = each %{ $query_res } ) {    
@@ -593,10 +805,9 @@ sub get_encrypt_key {
             last;
         }
     }
-   
 
     # target can be in known_client
-    if( !$encrypt_key ) {
+    if( not defined $encrypt_key ) {
         my $sql_statement= "SELECT * FROM known_clients WHERE hostname='$target'";
         my $query_res = $known_clients_db->select_dbentry( $sql_statement ); 
         while( my ($hit_num, $hit) = each %{ $query_res } ) {    
@@ -634,39 +845,11 @@ sub open_socket {
     if(not defined $socket) {
         return;
     }
-    &daemon_log("open_socket: $PeerAddr", 7);
+#    &daemon_log("DEBUG: open_socket: $PeerAddr", 7);
     return $socket;
 }
 
 
-#===  FUNCTION  ================================================================
-#         NAME:  get_ip 
-#   PARAMETERS:  interface name (i.e. eth0)
-#      RETURNS:  (ip address) 
-#  DESCRIPTION:  Uses ioctl to get ip address directly from system.
-#===============================================================================
-sub get_ip {
-       my $ifreq= shift;
-       my $result= "";
-       my $SIOCGIFADDR= 0x8915;       # man 2 ioctl_list
-       my $proto= getprotobyname('ip');
-
-       socket SOCKET, PF_INET, SOCK_DGRAM, $proto
-               or die "socket: $!";
-
-       if(ioctl SOCKET, $SIOCGIFADDR, $ifreq) {
-               my ($if, $sin)    = unpack 'a16 a16', $ifreq;
-               my ($port, $addr) = sockaddr_in $sin;
-               my $ip            = inet_ntoa $addr;
-
-               if ($ip && length($ip) > 0) {
-                       $result = $ip;
-               }
-       }
-
-       return $result;
-}
-
 sub get_local_ip_for_remote_ip {
        my $remote_ip= shift;
        my $result="0.0.0.0";
@@ -708,18 +891,19 @@ sub get_local_ip_for_remote_ip {
        return $result;
 }
 
+
 sub send_msg_to_target {
-    my ($msg, $address, $encrypt_key, $msg_header) = @_ ;
+    my ($msg, $address, $encrypt_key, $msg_header, $session_id) = @_ ;
     my $error = 0;
     my $header;
+    my $timestamp = &get_time();
     my $new_status;
     my $act_status;
     my ($sql_statement, $res);
   
     if( $msg_header ) {
         $header = "'$msg_header'-";
-    }
-    else {
+    } else {
         $header = "";
     }
 
@@ -735,7 +919,7 @@ sub send_msg_to_target {
     # opensocket
     my $socket = &open_socket($address);
     if( !$socket ) {
-        daemon_log("cannot send ".$header."msg to $address , host not reachable", 1);
+        daemon_log("$session_id ERROR: cannot send ".$header."msg to $address , host not reachable", 1);
         $error++;
     }
     
@@ -743,8 +927,8 @@ sub send_msg_to_target {
         # send xml msg
         print $socket $crypted_msg."\n";
 
-        daemon_log("send ".$header."msg to $address", 1);
-        daemon_log("message:\n$msg", 8);
+        daemon_log("$session_id INFO: send ".$header."msg to $address", 5);
+        daemon_log("$session_id DEBUG: message:\n$msg", 9);
         
     }
 
@@ -758,99 +942,405 @@ sub send_msg_to_target {
 
 
     # known_clients
-    $sql_statement = "SELECT * FROM known_clients WHERE hostname='$address'";
+    $sql_statement = "SELECT * FROM $known_clients_tn WHERE hostname='$address'";
     $res = $known_clients_db->select_dbentry($sql_statement);
-    if( keys(%$res) > 0) {
-        $act_status = $res->{1}->{'status'};
-        if( $act_status eq "down" ) {
+    if( keys(%$res) == 1) {
+        $act_status = exists $res->{1}->{'status'} ? $res->{1}->{'status'} : "";
+        if ($act_status eq "down" && $new_status eq "down") {
             $sql_statement = "DELETE FROM known_clients WHERE hostname='$address'";
             $res = $known_clients_db->del_dbentry($sql_statement);
-            daemon_log("WARNING: failed 2x to send msg to host '$address', delete host from known_clients", 3);
-        } 
-        else { 
-            $sql_statement = "UPDATE known_clients SET status='$new_status' WHERE hostname='$address'";
+            daemon_log("$session_id WARNING: failed 2x to send msg to host '$address', delete host from known_clients", 3);
+        } else { 
+            $sql_statement = "UPDATE known_clients SET status='$new_status', timestamp='$timestamp' WHERE hostname='$address'";
             $res = $known_clients_db->update_dbentry($sql_statement);
             if($new_status eq "down"){
-                daemon_log("WARNING: set '$address' from status '$act_status' to '$new_status'", 3);
-            }
-            else {
-                daemon_log("INFO: set '$address' from status '$act_status' to '$new_status'", 5);
+                daemon_log("$session_id WARNING: set '$address' from status '$act_status' to '$new_status'", 3);
+            } else {
+                daemon_log("$session_id INFO: set '$address' from status '$act_status' to '$new_status'", 5);
             }
         }
     }
 
     # known_server
-    $sql_statement = "SELECT * FROM known_server WHERE hostname='$address'";
+    $sql_statement = "SELECT * FROM $known_server_tn WHERE hostname='$address'";
     $res = $known_server_db->select_dbentry($sql_statement);
-    if( keys(%$res) > 0 ) {
-        $act_status = $res->{1}->{'status'};
-        if( $act_status eq "down" ) {
+    if( keys(%$res) == 1) {
+        $act_status = exists $res->{1}->{'status'} ? $res->{1}->{'status'} : "";
+        if ($act_status eq "down" && $new_status eq "down") {
             $sql_statement = "DELETE FROM known_server WHERE hostname='$address'";
-            $res = $known_clients_db->del_dbentry($sql_statement);
-            daemon_log("WARNING: failed 2x to a send msg to host '$address', delete host from known_server", 3);
+            $res = $known_server_db->del_dbentry($sql_statement);
+            daemon_log("$session_id WARNING: failed 2x to send a message to host '$address', delete host from known_server", 3);
         } 
         else { 
-            $sql_statement = "UPDATE known_server SET status='$new_status' WHERE hostname='$address'";
+            $sql_statement = "UPDATE known_server SET status='$new_status', timestamp='$timestamp' WHERE hostname='$address'";
             $res = $known_server_db->update_dbentry($sql_statement);
             if($new_status eq "down"){
-                daemon_log("WARNING: set '$address' from status '$act_status' to '$new_status'", 3);
-            }
-            else {
-                daemon_log("INFO: set '$address' from status '$act_status' to '$new_status'", 5);
+                daemon_log("$session_id WARNING: set '$address' from status '$act_status' to '$new_status'", 3);
+            } else {
+                daemon_log("$session_id INFO: set '$address' from status '$act_status' to '$new_status'", 5);
             }
         }
     }
+    return $error; 
+}
 
-    return; 
+
+sub update_jobdb_status_for_send_msgs {
+    my ($answer, $error) = @_;
+    if( $answer =~ /<jobdb_id>(\d+)<\/jobdb_id>/ ) {
+        my $jobdb_id = $1;
+            
+        # sending msg faild
+        if( $error ) {
+            if (not $answer =~ /<header>trigger_action_reinstall<\/header>/) {
+                my $sql_statement = "UPDATE $job_queue_tn ".
+                    "SET status='error', result='can not deliver msg, please consult log file' ".
+                    "WHERE id=$jobdb_id";
+                my $res = $job_db->update_dbentry($sql_statement);
+            }
+
+        # sending msg was successful
+        } else {
+            my $sql_statement = "UPDATE $job_queue_tn ".
+                "SET status='done' ".
+                "WHERE id=$jobdb_id AND status='processed'";
+            my $res = $job_db->update_dbentry($sql_statement);
+        }
+    }
 }
 
 
-sub _start {
-    my ($kernel) = $_[KERNEL];
-    &trigger_db_loop($kernel);
+sub sig_handler {
+       my ($kernel, $signal) = @_[KERNEL, ARG0] ;
+       daemon_log("0 INFO got signal '$signal'", 1); 
+       $kernel->sig_handled();
+       return;
 }
 
 
-sub client_input {
-    no strict "refs";
-    my ($heap,$input,$wheel) = @_[HEAP, ARG0, ARG1];
+sub msg_to_decrypt {
+    my ($kernel, $session, $heap) = @_[KERNEL, SESSION, HEAP];
+    my $session_id = $session->ID;
     my ($msg, $msg_hash, $module);
     my $error = 0;
-    my $answer_l;
-    my ($answer_header, @answer_target_l, $answer_source);
-    my $client_answer;
 
-    daemon_log("Incoming msg from '".$heap->{'remote_ip'}."'", 7);
-    daemon_log("\n$input", 8);
+    # hole neue msg aus @msgs_to_decrypt
+    my $next_msg = shift @msgs_to_decrypt;
+    
+    # entschlüssle sie
 
     # msg is from a new client or gosa
-    ($msg, $msg_hash, $module) = &input_from_unknown_host($input);
-
-    # msg is from a gosa-si-server or gosa-si-bus
+    ($msg, $msg_hash, $module) = &input_from_unknown_host($next_msg, $session_id);
+    # msg is from a gosa-si-server
     if(( !$msg ) || ( !$msg_hash ) || ( !$module )){
-        ($msg, $msg_hash, $module) = &input_from_known_server($input, $heap->{'remote_ip'});
+        ($msg, $msg_hash, $module) = &input_from_known_server($next_msg, $heap->{'remote_ip'}, $session_id);
     }
-
     # msg is from a gosa-si-client
     if(( !$msg ) || ( !$msg_hash ) || ( !$module )){
-        ($msg, $msg_hash, $module) = &input_from_known_client($input, $heap->{'remote_ip'});
+        ($msg, $msg_hash, $module) = &input_from_known_client($next_msg, $heap->{'remote_ip'}, $session_id);
     }
-
     # an error occurred
     if(( !$msg ) || ( !$msg_hash ) || ( !$module )){
+        # if an incoming msg could not be decrypted (maybe a wrong key), send client a ping. If the client
+        # could not understand a msg from its server the client cause a re-registering process
+        daemon_log("$session_id WARNING cannot understand incoming msg, send 'ping'-msg to all host with ip '".$heap->{remote_ip}.
+                "' to cause a re-registering of the client if necessary", 3);
+        my $sql_statement = "SELECT * FROM $main::known_clients_tn WHERE (hostname LIKE '".$heap->{'remote_ip'}."%')";
+        my $query_res = $known_clients_db->select_dbentry( $sql_statement ); 
+        while( my ($hit_num, $hit) = each %{ $query_res } ) {    
+            my $host_name = $hit->{'hostname'};
+            my $host_key = $hit->{'hostkey'};
+            my $ping_msg = "<xml> <header>gosa_ping</header> <source>$server_address</source> <target>$host_name</target></xml>";
+            my $error = &send_msg_to_target($ping_msg, $host_name, $host_key, "gosa_ping", $session_id);
+            &update_jobdb_status_for_send_msgs($ping_msg, $error);
+        }
         $error++;
     }
 
+
+    my $header;
+    my $target;
+    my $source;
+    my $done = 0;
+    my $sql;
+    my $res;
+
+    # check whether this message should be processed here
+    if ($error == 0) {
+        $header = @{$msg_hash->{'header'}}[0];
+        $target = @{$msg_hash->{'target'}}[0];
+        $source = @{$msg_hash->{'source'}}[0];
+               my $not_found_in_known_clients_db = 0;
+               my $not_found_in_known_server_db = 0;
+               my $not_found_in_foreign_clients_db = 0;
+        my $local_address;
+        my ($target_ip, $target_port) = split(':', $target);
+               if ($target =~ /^\d+\.\d+\.\d+\.\d+:\d+$/) {
+                       $local_address = &get_local_ip_for_remote_ip($target_ip).":$server_port";
+               } else {
+            $local_address = $server_address;
+        }
+
+        # target and source is equal to GOSA -> process here
+        if (not $done) {
+            if ($target eq "GOSA" && $source eq "GOSA") {
+                $done = 1;                    
+            }
+        }
+
+        # target is own address without forward_to_gosa-tag -> process here
+        if (not $done) {
+            if (($target eq $local_address) && (not exists $msg_hash->{'forward_to_gosa'})) {
+                $done = 1;
+                if ($source eq "GOSA") {
+                    $msg =~ s/<\/xml>/<forward_to_gosa>$local_address,$session_id<\/forward_to_gosa><\/xml>/;
+                }
+                #print STDERR "target is own address without forward_to_gosa-tag -> process here\n";
+            }
+        }
+
+        # target is a client address in known_clients -> process here
+               if (not $done) {
+                               $sql = "SELECT * FROM $known_clients_tn WHERE (hostname='$target' OR macaddress LIKE '$target')"; 
+                               $res = $known_clients_db->select_dbentry($sql);
+                               if (keys(%$res) > 0) {
+                                               $done = 1; 
+                                               my $hostname = $res->{1}->{'hostname'};
+                                               $msg =~ s/<target>$target<\/target>/<target>$hostname<\/target>/;
+                                               #print STDERR "target is a client address in known_clients -> process here\n";
+                               } else {
+                                               $not_found_in_known_clients_db = 1;
+                               }
+               }
+       
+        # target ist own address with forward_to_gosa-tag not pointing to myself -> process here
+        if (not $done) {
+            my $forward_to_gosa =  @{$msg_hash->{'forward_to_gosa'}}[0];
+            my $gosa_at;
+            my $gosa_session_id;
+            if (($target eq $local_address) && (defined $forward_to_gosa)){
+                my ($gosa_at, $gosa_session_id) = split(/,/, $forward_to_gosa);
+                if ($gosa_at ne $local_address) {
+                    $done = 1;
+                    #print STDERR "target is own address with forward_to_gosa-tag not pointing to myself -> process here\n"; 
+                }
+            }
+        }
+
+        # if message should be processed here -> add message to incoming_db
+               if ($done) {
+                               # if a job or a gosa message comes from a foreign server, fake module to GosaPackages
+                               # so gosa-si-server knows how to process this kind of messages
+                               if ($header =~ /^gosa_/ || $header =~ /^job_/) {
+                                               $module = "GosaPackages";
+                               }
+
+                               my $res = $incoming_db->add_dbentry( {table=>$incoming_tn,
+                                                               primkey=>[],
+                                                               headertag=>$header,
+                                                               targettag=>$target,
+                                                               xmlmessage=>&encode_base64($msg),
+                                                               timestamp=>&get_time,
+                                                               module=>$module,
+                                                               sessionid=>$session_id,
+                                                               } );
+               }
+
+        # target is own address with forward_to_gosa-tag pointing at myself -> forward to gosa
+        if (not $done) {
+            my $forward_to_gosa =  @{$msg_hash->{'forward_to_gosa'}}[0];
+            my $gosa_at;
+            my $gosa_session_id;
+            if (($target eq $local_address) && (defined $forward_to_gosa)){
+                my ($gosa_at, $gosa_session_id) = split(/,/, $forward_to_gosa);
+                if ($gosa_at eq $local_address) {
+                    my $session_reference = $kernel->ID_id_to_session($gosa_session_id);
+                    if( defined $session_reference ) {
+                        $heap = $session_reference->get_heap();
+                    }
+                    if(exists $heap->{'client'}) {
+                        $msg = &encrypt_msg($msg, $GosaPackages_key);
+                        $heap->{'client'}->put($msg);
+                    }
+                    $done = 1;
+                    #print STDERR "target is own address with forward_to_gosa-tag pointing at myself -> forward to gosa\n";
+                }
+            }
+
+        }
+
+        # target is a client address in foreign_clients -> forward to registration server
+        if (not $done) {
+            $sql = "SELECT * FROM $foreign_clients_tn WHERE (hostname='$target' OR macaddress LIKE '$target')";
+            $res = $foreign_clients_db->select_dbentry($sql);
+            if (keys(%$res) > 0) {
+                   my $hostname = $res->{1}->{'hostname'};
+                   my ($host_ip, $host_port) = split(/:/, $hostname);
+                   my $local_address =  &get_local_ip_for_remote_ip($host_ip).":$server_port";
+                my $regserver = $res->{1}->{'regserver'};
+                my $sql = "SELECT * FROM $known_server_tn WHERE hostname='$regserver'"; 
+                my $res = $known_server_db->select_dbentry($sql);
+                if (keys(%$res) > 0) {
+                    my $regserver_key = $res->{1}->{'hostkey'};
+                    $msg =~ s/<source>GOSA<\/source>/<source>$local_address<\/source>/;
+                    $msg =~ s/<target>$target<\/target>/<target>$hostname<\/target>/;
+                    if ($source eq "GOSA") {
+                        $msg =~ s/<\/xml>/<forward_to_gosa>$local_address,$session_id<\/forward_to_gosa><\/xml>/;
+                    }
+                    &send_msg_to_target($msg, $regserver, $regserver_key, $header, $session_id);
+                }
+                $done = 1;
+                #print STDERR "target is a client address in foreign_clients -> forward to registration server\n";
+            } else {
+                               $not_found_in_foreign_clients_db = 1;
+                       }
+        }
+
+        # target is a server address -> forward to server
+        if (not $done) {
+            $sql = "SELECT * FROM $known_server_tn WHERE hostname='$target'";
+            $res = $known_server_db->select_dbentry($sql);
+            if (keys(%$res) > 0) {
+                my $hostkey = $res->{1}->{'hostkey'};
+
+                if ($source eq "GOSA") {
+                    $msg =~ s/<source>GOSA<\/source>/<source>$local_address<\/source>/;
+                    $msg =~ s/<\/xml>/<forward_to_gosa>$local_address,$session_id<\/forward_to_gosa><\/xml>/;
+
+                }
+
+                &send_msg_to_target($msg, $target, $hostkey, $header, $session_id);
+                $done = 1;
+                #print STDERR "target is a server address -> forward to server\n";
+            } else {
+                               $not_found_in_known_server_db = 1;
+                       }
+        }
+
+               
+               # target is not in foreign_clients_db, known_server_db or known_clients_db, maybe it is a complete new one -> process here
+               if ( $not_found_in_foreign_clients_db 
+                                               && $not_found_in_known_server_db
+                                               && $not_found_in_known_clients_db) {
+                               my $res = $incoming_db->add_dbentry( {table=>$incoming_tn,
+                                                               primkey=>[],
+                                                               headertag=>$header,
+                                                               targettag=>$target,
+                                                               xmlmessage=>&encode_base64($msg),
+                                                               timestamp=>&get_time,
+                                                               module=>$module,
+                                                               sessionid=>$session_id,
+                                                               } );
+                               $done = 1;
+               }
+
+
+        if (not $done) {
+            daemon_log("$session_id ERROR: do not know what to do with this message: $msg", 1);
+            if ($source eq "GOSA") {
+                my %data = ('error_msg' => &encode_base64($msg), 'error_string' => "Do not know what to do with this message!");
+                my $error_msg = &build_msg("error", $local_address, "GOSA", \%data ); 
+
+                my $session_reference = $kernel->ID_id_to_session($session_id);
+                if( defined $session_reference ) {
+                    $heap = $session_reference->get_heap();
+                }
+                if(exists $heap->{'client'}) {
+                    $error_msg = &encrypt_msg($error_msg, $GosaPackages_key);
+                    $heap->{'client'}->put($error_msg);
+                }
+            }
+        }
+
+    }
+
+    return;
+}
+
+
+sub next_task {
+    my ($session, $heap, $task) = @_[SESSION, HEAP, ARG0];
+    my $running_task = POE::Wheel::Run->new(
+            Program => sub { process_task($session, $heap, $task) },
+            StdioFilter => POE::Filter::Reference->new(),
+            StdoutEvent  => "task_result",
+            StderrEvent  => "task_debug",
+            CloseEvent   => "task_done",
+            );
+    $heap->{task}->{ $running_task->ID } = $running_task;
+}
+
+sub handle_task_result {
+    my ($kernel, $heap, $result) = @_[KERNEL, HEAP, ARG0];
+    my $client_answer = $result->{'answer'};
+    if( $client_answer =~ s/session_id=(\d+)$// ) {
+        my $session_id = $1;
+        if( defined $session_id ) {
+            my $session_reference = $kernel->ID_id_to_session($session_id);
+            if( defined $session_reference ) {
+                $heap = $session_reference->get_heap();
+            }
+        }
+
+        if(exists $heap->{'client'}) {
+            $heap->{'client'}->put($client_answer);
+        }
+    }
+    $kernel->sig(CHLD => "child_reap");
+}
+
+sub handle_task_debug {
+    my $result = $_[ARG0];
+    print STDERR "$result\n";
+}
+
+sub handle_task_done {
+    my ( $kernel, $heap, $task_id ) = @_[ KERNEL, HEAP, ARG0 ];
+    delete $heap->{task}->{$task_id};
+}
+
+sub process_task {
+    no strict "refs";
+    #CHECK: Not @_[...]?
+    my ($session, $heap, $task) = @_;
+    my $error = 0;
+    my $answer_l;
+    my ($answer_header, @answer_target_l, $answer_source);
+    my $client_answer = "";
+
+    # prepare all variables needed to process message
+    #my $msg = $task->{'xmlmessage'};
+    my $msg = &decode_base64($task->{'xmlmessage'});
+    my $incoming_id = $task->{'id'};
+    my $module = $task->{'module'};
+    my $header =  $task->{'headertag'};
+    my $session_id = $task->{'sessionid'};
+    my $msg_hash = $xml->XMLin($msg, ForceArray=>1);
+    my $source = @{$msg_hash->{'source'}}[0];
+    
+    # set timestamp of incoming client uptodate, so client will not 
+    # be deleted from known_clients because of expiration
+    my $act_time = &get_time();
+    my $sql = "UPDATE $known_clients_tn SET timestamp='$act_time' WHERE hostname='$source'"; 
+    my $res = $known_clients_db->exec_statement($sql);
+
     ######################
     # process incoming msg
     if( $error == 0) {
-        daemon_log("Processing module ".$module, 5);
-        $answer_l = &{ $module."::process_incoming_msg" }($msg, $msg_hash, $heap->{'remote_ip'});
+        daemon_log("$session_id INFO: Incoming msg (session_id=$session_id) with header '".@{$msg_hash->{'header'}}[0]."'", 5); 
+        daemon_log("$session_id DEBUG: Processing module ".$module, 7);
+        $answer_l = &{ $module."::process_incoming_msg" }($msg, $msg_hash, $session_id);
 
-        if ( 0 > @{$answer_l} ) {
+        if ( 0 < @{$answer_l} ) {
             my $answer_str = join("\n", @{$answer_l});
-            daemon_log("$module: Got answer from module: \n".$answer_str,8);
+            while ($answer_str =~ /<header>(\w+)<\/header>/g) {
+                daemon_log("$session_id INFO: got answer message with header '$1'", 5);
+            }
+            daemon_log("$session_id DEBUG: $module: got answer from module: \n".$answer_str,8);
+        } else {
+            daemon_log("$session_id DEBUG: $module: got no answer from module!" ,8);
         }
+
     }
     if( !$answer_l ) { $error++ };
 
@@ -858,39 +1348,19 @@ sub client_input {
     # answer
     if( $error == 0 ) {
 
-        # for each answer in answer list
         foreach my $answer ( @{$answer_l} ) {
-
-                       my $error = 0;
-                       # check answer if gosa-si envelope conform
-                       if(defined($answer)) {
-                               my $answer_hash = $xml->XMLin($answer, ForceArray=>1);
-                               $answer_header = @{$answer_hash->{'header'}}[0];
-                               @answer_target_l = @{$answer_hash->{'target'}};
-                               $answer_source = @{$answer_hash->{'source'}}[0];
-                               if( !$answer_header ) {
-                                       daemon_log('ERROR: module answer is not gosa-si envelope conform: no header', 1);
-                                       daemon_log("\n$answer", 8);
-                                       $error++;
-                               }
-                               if( 0 == length @answer_target_l ) {
-                                       daemon_log('ERROR: module answer is not gosa-si envelope conform: no targets', 1);
-                                       daemon_log("\n$answer", 8);
-                                       $error++;
-                               }
-                               if( !$answer_source ) {
-                                       daemon_log('ERROR: module answer is not gosa-si envelope conform: no source', 1);
-                                       daemon_log("\n$answer", 8);
-                                       $error++;
-                               }
-
-                               if( $error != 0 ) {
-                                       next;
-                               }
-                       }
+            # check outgoing msg to xml validity
+            my $answer_hash = &check_outgoing_xml_validity($answer, $session_id);
+            if( not defined $answer_hash ) { next; }
+            
+            $answer_header = @{$answer_hash->{'header'}}[0];
+            @answer_target_l = @{$answer_hash->{'target'}};
+            $answer_source = @{$answer_hash->{'source'}}[0];
 
             # deliver msg to all targets 
             foreach my $answer_target ( @answer_target_l ) {
+
+                # targets of msg are all gosa-si-clients in known_clients_db
                 if( $answer_target eq "*" ) {
                     # answer is for all clients
                     my $sql_statement= "SELECT * FROM known_clients";
@@ -898,191 +1368,1534 @@ sub client_input {
                     while( my ($hit_num, $hit) = each %{ $query_res } ) {    
                         my $host_name = $hit->{hostname};
                         my $host_key = $hit->{hostkey};
-                        &send_msg_to_target($answer, $host_name, $host_key, $answer_header);
-                     }
-                }
-                elsif( $answer_target eq "GOSA" ) {
-                    # answer is for GOSA and has to returned to connected client
-                    my $gosa_answer = &encrypt_msg($answer, $GosaPackages_key);
-                    $client_answer = $gosa_answer;
+                        my $error = &send_msg_to_target($answer, $host_name, $host_key, $answer_header, $session_id);
+                        &update_jobdb_status_for_send_msgs($answer, $error);
+                    }
                 }
+
+                # targets of msg are all gosa-si-server in known_server_db
                 elsif( $answer_target eq "KNOWN_SERVER" ) {
                     # answer is for all server in known_server
-                    my $sql_statement= "SELECT * FROM known_server";
+                    my $sql_statement= "SELECT * FROM $known_server_tn";
                     my $query_res = $known_server_db->select_dbentry( $sql_statement ); 
                     while( my ($hit_num, $hit) = each %{ $query_res } ) {    
                         my $host_name = $hit->{hostname};
                         my $host_key = $hit->{hostkey};
-                        $answer =~ s/KNOWN_SERVER/$host_name/g;
-                        &send_msg_to_target($answer, $host_name, $host_key, $answer_header);
+                        $answer =~ s/<target>\S+<\/target>/<target>$host_name<\/target>/g;
+                        my $error = &send_msg_to_target($answer, $host_name, $host_key, $answer_header, $session_id);
+                        &update_jobdb_status_for_send_msgs($answer, $error);
+                    }
+                }
+
+                # target of msg is GOsa
+                               elsif( $answer_target eq "GOSA" ) {
+                                       my $session_id = ($1) if $answer =~ /<session_id>(\d+?)<\/session_id>/;
+                                       my $add_on = "";
+                    if( defined $session_id ) {
+                        $add_on = ".session_id=$session_id";
                     }
+                    # answer is for GOSA and has to returned to connected client
+                    my $gosa_answer = &encrypt_msg($answer, $GosaPackages_key);
+                    $client_answer = $gosa_answer.$add_on;
+                }
+
+                # target of msg is job queue at this host
+                elsif( $answer_target eq "JOBDB") {
+                    $answer =~ /<header>(\S+)<\/header>/;   
+                    my $header;
+                    if( defined $1 ) { $header = $1; }
+                    my $error = &send_msg_to_target($answer, $server_address, $GosaPackages_key, $header, $session_id);
+                    &update_jobdb_status_for_send_msgs($answer, $error);
                 }
-                elsif( $answer_target =~ /([0-9a-f]{2}:[0-9a-f]{2}:[0-9a-f]{2}:[0-9a-f]{2}:[0-9a-f]{2}:[0-9a-f]{2})/ ) {
-                    daemon_log("target is mac address '$answer_target', looking for host in known_clients", 3);
-                    my $sql_statement = "SELECT * FROM known_clients WHERE macaddress='$answer_target'";
+
+                # target of msg is a mac address
+                elsif( $answer_target =~ /^([0-9a-f]{2}:[0-9a-f]{2}:[0-9a-f]{2}:[0-9a-f]{2}:[0-9a-f]{2}:[0-9a-f]{2})$/i ) {
+                    daemon_log("$session_id INFO: target is mac address '$answer_target', looking for host in known_clients", 5);
+                    my $sql_statement = "SELECT * FROM known_clients WHERE macaddress LIKE '$answer_target'";
                     my $query_res = $known_clients_db->select_dbentry( $sql_statement );
                     my $found_ip_flag = 0;
                     while( my ($hit_num, $hit) = each %{ $query_res } ) {    
                         my $host_name = $hit->{hostname};
                         my $host_key = $hit->{hostkey};
                         $answer =~ s/$answer_target/$host_name/g;
-                        daemon_log("found host '$host_name', assoziated to '$answer_target'", 3);
-                        &send_msg_to_target($answer, $host_name, $host_key, $answer_header);
+                        daemon_log("$session_id INFO: found host '$host_name', associated to '$answer_target'", 5);
+                        my $error = &send_msg_to_target($answer, $host_name, $host_key, $answer_header, $session_id);
+                        &update_jobdb_status_for_send_msgs($answer, $error);
                         $found_ip_flag++ ;
                     }   
                     if( $found_ip_flag == 0) {
-                        daemon_log("WARNING: no host found in known_clients with mac address '$answer_target', forward msg to bus", 1);
-                        my $sql_statement = "SELECT * FROM known_server WHERE hostname='$bus_address'";
-                        my $query_res = $known_server_db->select_dbentry( $sql_statement );
-                        while( my ($hit_num, $hit) = each %{ $query_res } ) {    
-                            my $bus_address = $hit->{hostname};
-                            my $bus_key = $hit->{hostkey};
-                            &send_msg_to_target($answer, $bus_address, $bus_key, $answer_header);
-                            last;
-                        }
-
+                        daemon_log("$session_id WARNING: no host found in known_clients with mac address '$answer_target'", 3);
                     }
-                }
-                else {
-                    # answer is for one specific host
+
+                #  answer is for one specific host   
+                } else {
                     # get encrypt_key
                     my $encrypt_key = &get_encrypt_key($answer_target);
-                    if( !$encrypt_key ) {
-                        # unknown target, forward msg to bus
-                        daemon_log("WARNING: unknown target '$answer_target', forward msg to bus", 3);
-                        my $sql_statement = "SELECT * FROM known_server WHERE hostname='$bus_address'";
-                        my $query_res = $known_server_db->select_dbentry( $sql_statement );
-                        my $bus_key = $query_res->{1}->{hostkey};
-                        &send_msg_to_target($answer, $bus_address, $bus_key, $answer_header);
+                    if( not defined $encrypt_key ) {
+                        # unknown target
+                        daemon_log("$session_id WARNING: unknown target '$answer_target'", 3);
                         next;
                     }
-                    # send_msg
-                    &send_msg_to_target($answer, $answer_target, $encrypt_key, $answer_header);
+                    my $error = &send_msg_to_target($answer, $answer_target, $encrypt_key, $answer_header,$session_id);
+                    &update_jobdb_status_for_send_msgs($answer, $error);
                 }
             }
         }
     }
 
-    if( $client_answer ) {
-        $heap->{client}->put($client_answer);
-    }
+    my $filter = POE::Filter::Reference->new();
+    my %result = ( 
+            status => "seems ok to me",
+            answer => $client_answer,
+            );
 
-    return;
-}
+    my $output = $filter->put( [ \%result ] );
+    print @$output;
 
 
+}
 
-sub trigger_db_loop {
-#      my ($kernel) = $_[KERNEL];
-       my ($kernel) = @_ ;
+sub session_start {
+    my ($kernel) = $_[KERNEL];
+    $global_kernel = $kernel;
+    $kernel->yield('register_at_foreign_servers');
+       $kernel->yield('create_fai_server_db', $fai_server_tn );
+       $kernel->yield('create_fai_release_db', $fai_release_tn );
+    $kernel->yield('watch_for_next_tasks');
+       $kernel->sig(USR1 => "sig_handler");
+       $kernel->sig(USR2 => "recreate_packages_db");
        $kernel->delay_set('watch_for_new_jobs', $job_queue_loop_delay);
-}
+       $kernel->delay_set('watch_for_done_jobs', $job_queue_loop_delay); 
+    $kernel->delay_set('watch_for_modified_jobs', $modified_jobs_loop_delay); 
+       $kernel->delay_set('watch_for_new_messages', $messaging_db_loop_delay);
+    $kernel->delay_set('watch_for_delivery_messages', $messaging_db_loop_delay);
+       $kernel->delay_set('watch_for_done_messages', $messaging_db_loop_delay);
+    $kernel->delay_set('watch_for_old_known_clients', $job_queue_loop_delay);
 
 
-sub watch_for_new_jobs {
-       my ($kernel,$heap) = @_[KERNEL, HEAP];
+}
 
-       # check gosa job queue for jobs with executable timestamp
-    my $timestamp = &get_time();
 
-    my $sql_statement = "SELECT * FROM ".$job_queue_table_name.
-        " WHERE status='waiting' AND timestamp<'$timestamp'";
+sub watch_for_done_jobs {
+    #CHECK: $heap for what?
+    my ($kernel,$heap) = @_[KERNEL, HEAP];
 
+    my $sql_statement = "SELECT * FROM ".$job_queue_tn." WHERE ((status='done') AND (modified='0'))";
        my $res = $job_db->select_dbentry( $sql_statement );
 
-       while( my ($id, $hit) = each %{$res} ) {         
-
-               my $jobdb_id = $hit->{id};
-               my $macaddress = $hit->{macaddress};
-               my $job_msg_hash = &transform_msg2hash($hit->{xmlmessage});
-               my $out_msg_hash = $job_msg_hash;
-        my $sql_statement = "SELECT * FROM known_clients WHERE macaddress='$macaddress'";
-               my $res_hash = $known_clients_db->select_dbentry( $sql_statement );
-               # expect macaddress is unique!!!!!!
-               my $target = $res_hash->{1}->{hostname};
-
-               if (not defined $target) {
-                       &daemon_log("ERROR: no host found for mac address: $job_msg_hash->{mac}[0]", 1);
-                       &daemon_log("xml message: $hit->{xmlmessage}", 5);
-            my $sql_statement = "UPDATE $job_queue_table_name ".
-                "SET status='error', result='no host found for mac address' ".
-                "WHERE id='$jobdb_id'";
-                       my $res = $job_db->update_dbentry($sql_statement);
-                       next;
-               }
-
-               # add target
-               &add_content2xml_hash($out_msg_hash, "target", $target);
+    while( my ($id, $hit) = each %{$res} ) {
+        my $jobdb_id = $hit->{id};
+        my $sql_statement = "DELETE FROM $job_queue_tn WHERE id=$jobdb_id"; 
+        my $res = $job_db->del_dbentry($sql_statement);        
+    }
 
-               # add new header
-               my $out_header = $job_msg_hash->{header}[0];
-               $out_header =~ s/job_/gosa_/;
-               delete $out_msg_hash->{header};
-               &add_content2xml_hash($out_msg_hash, "header", $out_header);
+    $kernel->delay_set('watch_for_done_jobs',$job_queue_loop_delay);
+}
 
-               # add sqlite_id 
-               &add_content2xml_hash($out_msg_hash, "jobdb_id", $jobdb_id); 
 
-               my $out_msg = &create_xml_string($out_msg_hash);
+# if a job got an update or was modified anyway, send to all other si-server an update message
+# of this jobs
+sub watch_for_modified_jobs {
+    my ($kernel,$heap) = @_[KERNEL, HEAP];
 
-               # encrypt msg as a GosaPackage module
-               my $cipher = &create_ciphering($GosaPackages_key);
-               my $crypted_out_msg = &encrypt_msg($out_msg, $cipher);
+    my $sql_statement = "SELECT * FROM $job_queue_tn WHERE ((siserver='localhost') AND (modified='1'))"; 
+    my $res = $job_db->select_dbentry( $sql_statement );
+    
+    # if db contains no jobs which should be update, do nothing
+    if (keys %$res != 0) {
 
-               my $error = &send_msg_hash2address($out_msg_hash, "$gosa_ip:$gosa_port", $GosaPackages_key);
+        if ($job_synchronization  eq "true") {
+            # make out of the db result a gosa-si message   
+            my $update_msg = &db_res2si_msg ($res, "foreign_job_updates", "KNOWN_SERVER", "MY_LOCAL_ADDRESS");
+            # update all other SI-server
+            &inform_all_other_si_server($update_msg);
+        }
 
-               if ($error == 0) {
-                       my $sql_statement = "UPDATE $job_queue_table_name ".
-                "SET status='processing', targettag='$target' ".
-                "WHERE id='$jobdb_id'";
-                       my $res = $job_db->update_dbentry($sql_statement);
-               } else {
-            my $sql_statement = "UPDATE $job_queue_table_name ".
-                "SET status='error' ".
-                "WHERE id='$jobdb_id'";
-                       my $res = $job_db->update_dbentry($sql_statement);
-               }
-       }
+        # set jobs all jobs to modified = 0, wait until the next modification for updates of other si-server
+        $sql_statement = "UPDATE $job_queue_tn SET modified='0' ";
+        $res = $job_db->update_dbentry($sql_statement);
+    }
 
-       $kernel->delay_set('watch_for_new_jobs',3);
+    $kernel->delay_set('watch_for_modified_jobs', $modified_jobs_loop_delay);
 }
 
 
-#==== MAIN = main ==============================================================
-#  parse commandline options
-Getopt::Long::Configure( "bundling" );
-GetOptions("h|help" => \&usage,
-        "c|config=s" => \$cfg_file,
-        "f|foreground" => \$foreground,
-        "v|verbose+" => \$verbose,
-        "no-bus+" => \$no_bus,
-        "no-arp+" => \$no_arp,
-           );
+sub watch_for_new_jobs {
+       if($watch_for_new_jobs_in_progress == 0) {
+               $watch_for_new_jobs_in_progress = 1;
+               my ($kernel,$heap) = @_[KERNEL, HEAP];
+
+               # check gosa job quaeue for jobs with executable timestamp
+               my $timestamp = &get_time();
+               my $sql_statement = "SELECT * FROM $job_queue_tn WHERE status='waiting' AND (CAST (timestamp AS INTEGER)) < $timestamp ORDER BY timestamp";
+               my $res = $job_db->exec_statement( $sql_statement );
+
+               # Merge all new jobs that would do the same actions
+               my @drops;
+               my $hits;
+               foreach my $hit (reverse @{$res} ) {
+                       my $macaddress= lc @{$hit}[8];
+                       my $headertag= @{$hit}[5];
+                       if(
+                               defined($hits->{$macaddress}) &&
+                               defined($hits->{$macaddress}->{$headertag}) &&
+                               defined($hits->{$macaddress}->{$headertag}[0])
+                       ) {
+                               push @drops, "DELETE FROM $job_queue_tn WHERE id = $hits->{$macaddress}->{$headertag}[0]";
+                       }
+                       $hits->{$macaddress}->{$headertag}= $hit;
+               }
 
-#  read and set config parameters
-&check_cmdline_param ;
-&read_configfile;
-&check_pid;
+               # Delete new jobs with a matching job in state 'processing'
+               foreach my $macaddress (keys %{$hits}) {
+                       foreach my $jobdb_headertag (keys %{$hits->{$macaddress}}) {
+                               my $jobdb_id = @{$hits->{$macaddress}->{$jobdb_headertag}}[0];
+                               if(defined($jobdb_id)) {
+                                       my $sql_statement = "SELECT * FROM $job_queue_tn WHERE macaddress LIKE '$macaddress' AND headertag='$jobdb_headertag' AND status='processing'";
+                                       my $res = $job_db->exec_statement( $sql_statement );
+                                       foreach my $hit (@{$res}) {
+                                               push @drops, "DELETE FROM $job_queue_tn WHERE id=$jobdb_id";
+                                       }
+                               } else {
+                                       daemon_log("J ERROR: Job without id exists for macaddress $macaddress!", 1);
+                               }
+                       }
+               }
 
-$SIG{CHLD} = 'IGNORE';
+               # Commit deletion
+               $job_db->exec_statementlist(\@drops);
 
-# forward error messages to logfile
-if( ! $foreground ) {
-    open(STDERR, '>>', $log_file);
-    open(STDOUT, '>>', $log_file);
-}
+               # Look for new jobs that could be executed
+               foreach my $macaddress (keys %{$hits}) {
 
-# Just fork, if we are not in foreground mode
-if( ! $foreground ) { 
-    chdir '/'                 or die "Can't chdir to /: $!";
-    $pid = fork;
-    setsid                    or die "Can't start a new session: $!";
-    umask 0;
-} else { 
-    $pid = $$; 
-}
+                       # Look if there is an executing job
+                       my $sql_statement = "SELECT * FROM $job_queue_tn WHERE macaddress LIKE '$macaddress' AND status='processing'";
+                       my $res = $job_db->exec_statement( $sql_statement );
 
-# Do something useful - put our PID into the pid_file
+                       # Skip new jobs for host if there is a processing job
+                       if(defined($res) and defined @{$res}[0]) {
+                               next;
+                       }
+
+                       foreach my $jobdb_headertag (keys %{$hits->{$macaddress}}) {
+                               my $jobdb_id = @{$hits->{$macaddress}->{$jobdb_headertag}}[0];
+                               if(defined($jobdb_id)) {
+                                       my $job_msg = @{$hits->{$macaddress}->{$jobdb_headertag}}[7];
+
+                                       daemon_log("J DEBUG: its time to execute $job_msg", 7);
+                                       my $sql_statement = "SELECT * FROM known_clients WHERE macaddress LIKE '$macaddress'";
+                                       my $res_hash = $known_clients_db->select_dbentry( $sql_statement );
+
+                                       # expect macaddress is unique!!!!!!
+                                       my $target = $res_hash->{1}->{hostname};
+
+                                       # change header
+                                       $job_msg =~ s/<header>job_/<header>gosa_/;
+
+                                       # add sqlite_id
+                                       $job_msg =~ s/<\/xml>$/<jobdb_id>$jobdb_id<\/jobdb_id><\/xml>/;
+
+                                       $job_msg =~ /<header>(\S+)<\/header>/;
+                                       my $header = $1 ;
+                                       my $func_error = &send_msg_to_target($job_msg, $server_address, $GosaPackages_key, $header, "J");
+
+                                       # update status in job queue to 'processing'
+                                       $sql_statement = "UPDATE $job_queue_tn SET status='processing' WHERE id=$jobdb_id";
+                                       my $res = $job_db->update_dbentry($sql_statement);
+# TODO: abfangen ob alles in ordnung ist oder nicht, wenn nicht error schmeißen                                       
+
+                                       # We don't want parallel processing
+                                       last;
+                               }
+                       }
+               }
+
+               $watch_for_new_jobs_in_progress = 0;
+               $kernel->delay_set('watch_for_new_jobs', $job_queue_loop_delay);
+       }
+}
+
+
+
+sub watch_for_new_messages {
+    my ($kernel,$heap) = @_[KERNEL, HEAP];
+    my @coll_user_msg;   # collection list of outgoing messages
+    
+    # check messaging_db for new incoming messages with executable timestamp
+    my $timestamp = &get_time();
+    my $sql_statement = "SELECT * FROM $messaging_tn WHERE ( (CAST(timestamp AS INTEGER))<$timestamp AND flag='n' AND direction='in' )";
+    my $res = $messaging_db->exec_statement( $sql_statement );
+       foreach my $hit (@{$res}) {
+
+        # create outgoing messages
+        my $message_to = @{$hit}[3];
+        # translate message_to to plain login name
+        my @message_to_l = split(/,/, $message_to);  
+               my %receiver_h; 
+               foreach my $receiver (@message_to_l) {
+                       if ($receiver =~ /^u_([\s\S]*)$/) {
+                               $receiver_h{$1} = 0;
+                       } elsif ($receiver =~ /^g_([\s\S]*)$/) {
+                               my $group_name = $1;
+                               # fetch all group members from ldap and add them to receiver hash
+                               my $ldap_handle = &get_ldap_handle();
+                               if (defined $ldap_handle) {
+                                               my $mesg = $ldap_handle->search(
+                                                                               base => $ldap_base,
+                                                                               scope => 'sub',
+                                                                               attrs => ['memberUid'],
+                                                                               filter => "cn=$group_name",
+                                                                               );
+                                               if ($mesg->count) {
+                                                               my @entries = $mesg->entries;
+                                                               foreach my $entry (@entries) {
+                                                                               my @receivers= $entry->get_value("memberUid");
+                                                                               foreach my $receiver (@receivers) { 
+                                                                                               $receiver_h{$1} = 0;
+                                                                               }
+                                                               }
+                                               } 
+                                               # translating errors ?
+                                               if ($mesg->code) {
+                                                               daemon_log("M ERROR: unable to translate group '$group_name' to user list for message delivery: $mesg->error", 1);
+                                               }
+                               # ldap handle error ?           
+                               } else {
+                                       daemon_log("M ERROR: unable to translate group '$group_name' to user list for message delivery: no ldap handle available", 1);
+                               }
+                       } else {
+                               my $sbjct = &encode_base64(@{$hit}[1]);
+                               my $msg = &encode_base64(@{$hit}[7]);
+                               &daemon_log("M WARNING: unknown receiver '$receiver' for a user-message '$sbjct - $msg'", 3); 
+                       }
+               }
+               my @receiver_l = keys(%receiver_h);
+
+        my $message_id = @{$hit}[0];
+
+        #add each outgoing msg to messaging_db
+        my $receiver;
+        foreach $receiver (@receiver_l) {
+            my $sql_statement = "INSERT INTO $messaging_tn (id, subject, message_from, message_to, flag, direction, delivery_time, message, timestamp) ".
+                "VALUES ('".
+                $message_id."', '".    # id
+                @{$hit}[1]."', '".     # subject
+                @{$hit}[2]."', '".     # message_from
+                $receiver."', '".      # message_to
+                "none"."', '".         # flag
+                "out"."', '".          # direction
+                @{$hit}[6]."', '".     # delivery_time
+                @{$hit}[7]."', '".     # message
+                $timestamp."'".     # timestamp
+                ")";
+            &daemon_log("M DEBUG: $sql_statement", 1);
+            my $res = $messaging_db->exec_statement($sql_statement);
+            &daemon_log("M INFO: message '".@{$hit}[0]."' is prepared for delivery to receiver '$receiver'", 5);
+        }
+
+        # set incoming message to flag d=deliverd
+        $sql_statement = "UPDATE $messaging_tn SET flag='p' WHERE id='$message_id'"; 
+        &daemon_log("M DEBUG: $sql_statement", 7);
+        $res = $messaging_db->update_dbentry($sql_statement);
+        &daemon_log("M INFO: message '$message_id' is set to flag 'p' (processed)", 5);
+    }
+
+    $kernel->delay_set('watch_for_new_messages', $messaging_db_loop_delay); 
+    return;
+}
+
+sub watch_for_delivery_messages {
+    my ($kernel, $heap) = @_[KERNEL, HEAP];
+
+    # select outgoing messages
+    my $sql_statement = "SELECT * FROM $messaging_tn WHERE ( flag='p' AND direction='out' )";
+    #&daemon_log("0 DEBUG: $sql", 7);
+    my $res = $messaging_db->exec_statement( $sql_statement );
+    
+    # build out msg for each    usr
+    foreach my $hit (@{$res}) {
+        my $receiver = @{$hit}[3];
+        my $msg_id = @{$hit}[0];
+        my $subject = @{$hit}[1];
+        my $message = @{$hit}[7];
+
+        # resolve usr -> host where usr is logged in
+        my $sql = "SELECT * FROM $login_users_tn WHERE (user='$receiver')"; 
+        #&daemon_log("0 DEBUG: $sql", 7);
+        my $res = $login_users_db->exec_statement($sql);
+
+        # reciver is logged in nowhere
+        if (not ref(@$res[0]) eq "ARRAY") { next; }    
+
+               my $send_succeed = 0;
+               foreach my $hit (@$res) {
+                               my $receiver_host = @$hit[0];
+                               &daemon_log("M DEBUG: user '$receiver' is logged in at host '$receiver_host'", 7);
+
+                               # fetch key to encrypt msg propperly for usr/host
+                               my $sql = "SELECT * FROM $known_clients_tn WHERE (hostname='$receiver_host')";
+                               &daemon_log("0 DEBUG: $sql", 7);
+                               my $res = $known_clients_db->exec_statement($sql);
+
+                               # host is already down
+                               if (not ref(@$res[0]) eq "ARRAY") { next; }
+
+                               # host is on
+                               my $receiver_key = @{@{$res}[0]}[2];
+                               my %data = ('subject' => $subject, 'message' => $message, 'usr' => $receiver);
+                               my $out_msg = &build_msg("usr_msg", $server_address, $receiver_host, \%data ); 
+                               my $error = &send_msg_to_target($out_msg, $receiver_host, $receiver_key, "usr_msg", 0); 
+                               if ($error == 0 ) {
+                                       $send_succeed++ ;
+                               }
+               }
+
+               if ($send_succeed) {
+                               # set outgoing msg at db to deliverd
+                               my $sql = "UPDATE $messaging_tn SET flag='d' WHERE (id='$msg_id' AND direction='out' AND message_to='$receiver')"; 
+                               &daemon_log("0 DEBUG: $sql", 7);
+                               my $res = $messaging_db->exec_statement($sql); 
+               }
+       }
+
+    $kernel->delay_set('watch_for_delivery_messages', $messaging_db_loop_delay); 
+    return;
+}
+
+
+sub watch_for_done_messages {
+    my ($kernel,$heap) = @_[KERNEL, HEAP];
+
+    my $sql = "SELECT * FROM $messaging_tn WHERE (flag='p' AND direction='in')"; 
+    #&daemon_log("0 DEBUG: $sql", 7);
+    my $res = $messaging_db->exec_statement($sql); 
+
+    foreach my $hit (@{$res}) {
+        my $msg_id = @{$hit}[0];
+
+        my $sql = "SELECT * FROM $messaging_tn WHERE (id='$msg_id' AND direction='out' AND (NOT flag='s'))"; 
+        #&daemon_log("0 DEBUG: $sql", 7); 
+        my $res = $messaging_db->exec_statement($sql);
+
+        # not all usr msgs have been seen till now
+        if ( ref(@$res[0]) eq "ARRAY") { next; }
+        
+        $sql = "DELETE FROM $messaging_tn WHERE (id='$msg_id')"; 
+        #&daemon_log("0 DEBUG: $sql", 7);
+        $res = $messaging_db->exec_statement($sql);
+    
+    }
+
+    $kernel->delay_set('watch_for_done_messages', $messaging_db_loop_delay); 
+    return;
+}
+
+
+sub watch_for_old_known_clients {
+    my ($kernel,$heap) = @_[KERNEL, HEAP];
+
+    my $sql_statement = "SELECT * FROM $known_clients_tn";
+    my $res = $known_clients_db->select_dbentry( $sql_statement );
+
+    my $act_time = int(&get_time());
+
+    while ( my ($hit_num, $hit) = each %$res) {
+        my $expired_timestamp = int($hit->{'timestamp'});
+        $expired_timestamp =~ /(\d{4})(\d\d)(\d\d)(\d\d)(\d\d)(\d\d)/;
+        my $dt = DateTime->new( year   => $1,
+                month  => $2,
+                day    => $3,
+                hour   => $4,
+                minute => $5,
+                second => $6,
+                );
+
+        $dt->add( seconds => 2 * int($hit->{'keylifetime'}) );
+        $expired_timestamp = $dt->ymd('').$dt->hms('')."\n";
+        if ($act_time > $expired_timestamp) {
+            my $hostname = $hit->{'hostname'};
+            my $del_sql = "DELETE FROM $known_clients_tn WHERE hostname='$hostname'"; 
+            my $del_res = $known_clients_db->exec_statement($del_sql);
+
+            &main::daemon_log("0 INFO: timestamp '".$hit->{'timestamp'}."' of client '$hostname' is expired('$expired_timestamp'), client will be deleted from known_clients_db", 5);
+        }
+
+    }
+
+    $kernel->delay_set('watch_for_old_known_clients', $job_queue_loop_delay);
+}
+
+
+sub watch_for_next_tasks {
+    my ($kernel,$heap) = @_[KERNEL, HEAP];
+
+    my $sql = "SELECT * FROM $incoming_tn";
+    my $res = $incoming_db->select_dbentry($sql);
+
+    while ( my ($hit_num, $hit) = each %$res) {
+        my $headertag = $hit->{'headertag'};
+        if ($headertag =~ /^answer_(\d+)/) {
+            # do not start processing, this message is for a still running POE::Wheel
+            next;
+        }
+        my $message_id = $hit->{'id'};
+        $kernel->yield('next_task', $hit);
+
+        my $sql = "DELETE FROM $incoming_tn WHERE id=$message_id";
+        my $res = $incoming_db->exec_statement($sql);
+    }
+
+    $kernel->delay_set('watch_for_next_tasks', 0.1); 
+}
+
+
+sub get_ldap_handle {
+       my ($session_id) = @_;
+       my $heap;
+       my $ldap_handle;
+
+       if (not defined $session_id ) { $session_id = 0 };
+       if ($session_id =~ /[^0-9]*/) { $session_id = 0 };
+
+       if ($session_id == 0) {
+               daemon_log("$session_id DEBUG: get_ldap_handle invoked without a session_id, create a new ldap_handle", 7); 
+               $ldap_handle = Net::LDAP->new( $ldap_uri );
+               $ldap_handle->bind($ldap_admin_dn, password => $ldap_admin_password) or daemon_log("$session_id ERROR: Bind to LDAP $ldap_uri as $ldap_admin_dn failed!"); 
+
+       } else {
+               my $session_reference = $global_kernel->ID_id_to_session($session_id);
+               if( defined $session_reference ) {
+                       $heap = $session_reference->get_heap();
+               }
+
+               if (not defined $heap) {
+                       daemon_log("$session_id DEBUG: cannot get heap for session_id '$session_id'", 7); 
+                       return;
+               }
+
+               # TODO: This "if" is nonsense, because it doesn't prove that the
+                #       used handle is still valid - or if we've to reconnect...
+               #if (not exists $heap->{ldap_handle}) {
+                       $ldap_handle = Net::LDAP->new( $ldap_uri );
+                       $ldap_handle->bind($ldap_admin_dn, password => $ldap_admin_password) or daemon_log("$session_id ERROR: Bind to LDAP $ldap_uri as $ldap_admin_dn failed!"); 
+                       $heap->{ldap_handle} = $ldap_handle;
+               #}
+       }
+       return $ldap_handle;
+}
+
+
+sub change_fai_state {
+    my ($st, $targets, $session_id) = @_;
+    $session_id = 0 if not defined $session_id;
+    # Set FAI state to localboot
+    my %mapActions= (
+        reboot    => '',
+        update    => 'softupdate',
+        localboot => 'localboot',
+        reinstall => 'install',
+        rescan    => '',
+        wake      => '',
+        memcheck  => 'memcheck',
+        sysinfo   => 'sysinfo',
+        install   => 'install',
+    );
+
+    # Return if this is unknown
+    if (!exists $mapActions{ $st }){
+        daemon_log("$session_id ERROR: unknown action '$st', can not translate ot FAIstate", 1); 
+      return;
+    }
+
+    my $state= $mapActions{ $st };
+
+    my $ldap_handle = &get_ldap_handle($session_id);
+    if( defined($ldap_handle) ) {
+
+      # Build search filter for hosts
+        my $search= "(&(objectClass=GOhard)";
+        foreach (@{$targets}){
+            $search.= "(macAddress=$_)";
+        }
+        $search.= ")";
+
+      # If there's any host inside of the search string, procress them
+        if (!($search =~ /macAddress/)){
+            daemon_log("$session_id ERROR: no macAddress found in filter statement for LDAP search: '$search'", 1);    
+            return;
+        }
+
+      # Perform search for Unit Tag
+      my $mesg = $ldap_handle->search(
+          base   => $ldap_base,
+          scope  => 'sub',
+          attrs  => ['dn', 'FAIstate', 'objectClass'],
+          filter => "$search"
+          );
+
+         if ($mesg->count) {
+                 my @entries = $mesg->entries;
+                 if (0 == @entries) {
+                                 daemon_log("$session_id ERROR: ldap search failed: ldap_base=$ldap_base, filter=$search", 1); 
+                 }
+
+                 foreach my $entry (@entries) {
+                         # Only modify entry if it is not set to '$state'
+                         if ($entry->get_value("FAIstate") ne "$state"){
+                                 daemon_log("$session_id INFO: Setting FAIstate to '$state' for ".$entry->dn, 5);
+                                 my $result;
+                                 my %tmp = map { $_ => 1 } $entry->get_value("objectClass");
+                                 if (exists $tmp{'FAIobject'}){
+                                         if ($state eq ''){
+                                                 $result= $ldap_handle->modify($entry->dn, changes => [
+                                                         delete => [ FAIstate => [] ] ]);
+                                         } else {
+                                                 $result= $ldap_handle->modify($entry->dn, changes => [
+                                                         replace => [ FAIstate => $state ] ]);
+                                         }
+                                 } elsif ($state ne ''){
+                                         $result= $ldap_handle->modify($entry->dn, changes => [
+                                                 add     => [ objectClass => 'FAIobject' ],
+                                                 add     => [ FAIstate => $state ] ]);
+                                 }
+
+                                 # Errors?
+                                 if ($result->code){
+                                         daemon_log("$session_id Error: Setting FAIstate to '$state' for ".$entry->dn. "failed: ".$result->error, 1);
+                                 }
+                         } else {
+                                 daemon_log("$session_id DEBUG FAIstate at host '".$entry->dn."' already at state '$st'", 7); 
+                         }  
+                 }
+         } else {
+               daemon_log("$session_id ERROR: LDAP search failed: ldap_base=$ldap_base, filter=$search", 1);
+         }
+
+    # if no ldap handle defined
+    } else {
+        daemon_log("$session_id ERROR: no LDAP handle defined for update FAIstate", 1); 
+    }
+
+       return;
+}
+
+
+sub change_goto_state {
+    my ($st, $targets, $session_id) = @_;
+    $session_id = 0  if not defined $session_id;
+
+    # Switch on or off?
+    my $state= $st eq 'active' ? 'active': 'locked';
+
+    my $ldap_handle = &get_ldap_handle($session_id);
+    if( defined($ldap_handle) ) {
+
+      # Build search filter for hosts
+      my $search= "(&(objectClass=GOhard)";
+      foreach (@{$targets}){
+        $search.= "(macAddress=$_)";
+      }
+      $search.= ")";
+
+      # If there's any host inside of the search string, procress them
+      if (!($search =~ /macAddress/)){
+        return;
+      }
+
+      # Perform search for Unit Tag
+      my $mesg = $ldap_handle->search(
+          base   => $ldap_base,
+          scope  => 'sub',
+          attrs  => ['dn', 'gotoMode'],
+          filter => "$search"
+          );
+
+      if ($mesg->count) {
+        my @entries = $mesg->entries;
+        foreach my $entry (@entries) {
+
+          # Only modify entry if it is not set to '$state'
+          if ($entry->get_value("gotoMode") ne $state){
+
+            daemon_log("$session_id INFO: Setting gotoMode to '$state' for ".$entry->dn, 5);
+            my $result;
+            $result= $ldap_handle->modify($entry->dn, changes => [
+                                                replace => [ gotoMode => $state ] ]);
+
+            # Errors?
+            if ($result->code){
+              &daemon_log("$session_id Error: Setting gotoMode to '$state' for ".$entry->dn. "failed: ".$result->error, 1);
+            }
+
+          }
+        }
+      } else {
+               daemon_log("$session_id ERROR: LDAP search failed in function change_goto_state: ldap_base=$ldap_base, filter=$search", 1);
+         }
+
+    }
+}
+
+
+sub run_recreate_packages_db {
+    my ($kernel, $session, $heap) = @_[KERNEL, SESSION, HEAP];
+    my $session_id = $session->ID;
+       &main::daemon_log("$session_id INFO: Recreating FAI Packages DB ('$fai_release_tn', '$fai_server_tn', '$packages_list_tn')", 5);
+       $kernel->yield('create_fai_release_db', $fai_release_tn);
+       $kernel->yield('create_fai_server_db', $fai_server_tn);
+       return;
+}
+
+
+sub run_create_fai_server_db {
+    my ($kernel, $session, $heap, $table_name) = @_[KERNEL, SESSION, HEAP, ARG0];
+    my $session_id = $session->ID;
+    my $task = POE::Wheel::Run->new(
+            Program => sub { &create_fai_server_db($table_name,$kernel, undef, $session_id) },
+            StdoutEvent  => "session_run_result",
+            StderrEvent  => "session_run_debug",
+            CloseEvent   => "session_run_done",
+            );
+
+    $heap->{task}->{ $task->ID } = $task;
+    return;
+}
+
+
+sub create_fai_server_db {
+    my ($table_name, $kernel, $dont_create_packages_list, $session_id) = @_;
+       my $result;
+
+       if (not defined $session_id) { $session_id = 0; }
+    my $ldap_handle = &get_ldap_handle();
+       if(defined($ldap_handle)) {
+               daemon_log("$session_id INFO: create_fai_server_db: start", 5);
+               my $mesg= $ldap_handle->search(
+                       base   => $ldap_base,
+                       scope  => 'sub',
+                       attrs  => ['FAIrepository', 'gosaUnitTag'],
+                       filter => "(&(FAIrepository=*)(objectClass=FAIrepositoryServer))",
+               );
+               if($mesg->{'resultCode'} == 0 &&
+                  $mesg->count != 0) {
+                  foreach my $entry (@{$mesg->{entries}}) {
+                          if($entry->exists('FAIrepository')) {
+                                  # Add an entry for each Repository configured for server
+                                  foreach my $repo(@{$entry->get_value('FAIrepository', asref => 1)}) {
+                                                  my($tmp_url,$tmp_server,$tmp_release,$tmp_sections) = split(/\|/, $repo);
+                                                  my $tmp_tag= $entry->get_value('gosaUnitTag') || "";
+                                                  $result= $fai_server_db->add_dbentry( { 
+                                                                  table => $table_name,
+                                                                  primkey => ['server', 'release', 'tag'],
+                                                                  server => $tmp_url,
+                                                                  release => $tmp_release,
+                                                                  sections => $tmp_sections,
+                                                                  tag => (length($tmp_tag)>0)?$tmp_tag:"",
+                                                          } );
+                                          }
+                                  }
+                          }
+                  }
+               daemon_log("$session_id INFO: create_fai_server_db: finished", 5);
+
+               # TODO: Find a way to post the 'create_packages_list_db' event
+               if(not defined($dont_create_packages_list)) {
+                       &create_packages_list_db(undef, undef, $session_id);
+               }
+       }       
+    
+    $ldap_handle->disconnect;
+       return $result;
+}
+
+
+sub run_create_fai_release_db {
+    my ($session, $heap, $table_name) = @_[SESSION, HEAP, ARG0];
+       my $session_id = $session->ID;
+    my $task = POE::Wheel::Run->new(
+            Program => sub { &create_fai_release_db($table_name, $session_id) },
+            StdoutEvent  => "session_run_result",
+            StderrEvent  => "session_run_debug",
+            CloseEvent   => "session_run_done",
+            );
+
+    $heap->{task}->{ $task->ID } = $task;
+    return;
+}
+
+
+sub create_fai_release_db {
+       my ($table_name, $session_id) = @_;
+       my $result;
+
+    # used for logging
+    if (not defined $session_id) { $session_id = 0; }
+
+    my $ldap_handle = &get_ldap_handle();
+       if(defined($ldap_handle)) {
+               daemon_log("$session_id INFO: create_fai_release_db: start",5);
+               my $mesg= $ldap_handle->search(
+                       base   => $ldap_base,
+                       scope  => 'sub',
+                       attrs  => [],
+                       filter => "(&(objectClass=organizationalUnit)(ou=fai))",
+               );
+               if($mesg->{'resultCode'} == 0 &&
+                       $mesg->count != 0) {
+                       # Walk through all possible FAI container ou's
+                       my @sql_list;
+                       my $timestamp= &get_time();
+                       foreach my $ou (@{$mesg->{entries}}) {
+                               my $tmp_classes= resolve_fai_classes($ou->dn, $ldap_handle, $session_id);
+                               if(defined($tmp_classes) && ref($tmp_classes) eq 'HASH') {
+                                       my @tmp_array=get_fai_release_entries($tmp_classes);
+                                       if(@tmp_array) {
+                                               foreach my $entry (@tmp_array) {
+                                                       if(defined($entry) && ref($entry) eq 'HASH') {
+                                                               my $sql= 
+                                                               "INSERT INTO $table_name "
+                                                               ."(timestamp, release, class, type, state) VALUES ("
+                                                               .$timestamp.","
+                                                               ."'".$entry->{'release'}."',"
+                                                               ."'".$entry->{'class'}."',"
+                                                               ."'".$entry->{'type'}."',"
+                                                               ."'".$entry->{'state'}."')";
+                                                               push @sql_list, $sql;
+                                                       }
+                                               }
+                                       }
+                               }
+                       }
+
+                       daemon_log("$session_id DEBUG: Inserting ".scalar @sql_list." entries to DB",8);
+                       if(@sql_list) {
+                               unshift @sql_list, "VACUUM";
+                               unshift @sql_list, "DELETE FROM $table_name";
+                               $fai_release_db->exec_statementlist(\@sql_list);
+                       }
+                       daemon_log("$session_id DEBUG: Done with inserting",7);
+               }
+               daemon_log("$session_id INFO: create_fai_release_db: finished",5);
+       }
+    $ldap_handle->disconnect;
+       return $result;
+}
+
+sub get_fai_types {
+       my $tmp_classes = shift || return undef;
+       my @result;
+
+       foreach my $type(keys %{$tmp_classes}) {
+               if(defined($tmp_classes->{$type}[0]) && (!($tmp_classes->{$type}[0] =~ /^.*?removed.*?$/))) {
+                       my $entry = {
+                               type => $type,
+                               state => $tmp_classes->{$type}[0],
+                       };
+                       push @result, $entry;
+               }
+       }
+
+       return @result;
+}
+
+sub get_fai_state {
+       my $result = "";
+       my $tmp_classes = shift || return $result;
+
+       foreach my $type(keys %{$tmp_classes}) {
+               if(defined($tmp_classes->{$type}[0])) {
+                       $result = $tmp_classes->{$type}[0];
+                       
+               # State is equal for all types in class
+                       last;
+               }
+       }
+
+       return $result;
+}
+
+sub resolve_fai_classes {
+       my ($fai_base, $ldap_handle, $session_id) = @_;
+       if (not defined $session_id) { $session_id = 0; }
+       my $result;
+       my @possible_fai_classes= ("FAIscript", "FAIhook", "FAIpartitionTable", "FAItemplate", "FAIvariable", "FAIprofile", "FAIpackageList");
+       my $fai_filter= "(|(&(objectClass=FAIclass)(|(objectClass=".join(")(objectClass=", @possible_fai_classes).")))(objectClass=FAIbranch))";
+       my $fai_classes;
+
+       daemon_log("$session_id DEBUG: Searching for FAI entries in base $fai_base",7);
+       my $mesg= $ldap_handle->search(
+               base   => $fai_base,
+               scope  => 'sub',
+               attrs  => ['cn','objectClass','FAIstate'],
+               filter => $fai_filter,
+       );
+       daemon_log("$session_id DEBUG: Found ".$mesg->count()." FAI entries",7);
+
+       if($mesg->{'resultCode'} == 0 &&
+               $mesg->count != 0) {
+               foreach my $entry (@{$mesg->{entries}}) {
+                       if($entry->exists('cn')) {
+                               my $tmp_dn= $entry->dn();
+
+                               # Skip classname and ou dn parts for class
+                               my $tmp_release = ($1) if $tmp_dn =~ /^[^,]+,[^,]+,(.*?),$fai_base$/;
+
+                               # Skip classes without releases
+                               if((!defined($tmp_release)) || length($tmp_release)==0) {
+                                       next;
+                               }
+
+                               my $tmp_cn= $entry->get_value('cn');
+                               my $tmp_state= $entry->get_value('FAIstate');
+
+                               my $tmp_type;
+                               # Get FAI type
+                               for my $oclass(@{$entry->get_value('objectClass', asref => 1)}) {
+                                       if(grep $_ eq $oclass, @possible_fai_classes) {
+                                               $tmp_type= $oclass;
+                                               last;
+                                       }
+                               }
+
+                               if($tmp_release =~ /^.*?,.*?$/ && (!($tmp_release =~ /^.*?\\,.*?$/))) {
+                                       # A Subrelease
+                                       my @sub_releases = split(/,/, $tmp_release);
+
+                                       # Walk through subreleases and build hash tree
+                                       my $hash;
+                                       while(my $tmp_sub_release = pop @sub_releases) {
+                                               $hash .= "\{'$tmp_sub_release'\}->";                                            
+                                       }
+                                       eval('push @{$fai_classes->'.$hash.'{$tmp_cn}->{$tmp_type}}, (defined($tmp_state) && length($tmp_state)>0)?$tmp_state:"";');
+                               } else {
+                                       # A branch, no subrelease
+                                       push @{$fai_classes->{$tmp_release}->{$tmp_cn}->{$tmp_type}}, (defined($tmp_state) && length($tmp_state)>0)?$tmp_state:"";
+                               }
+                       } elsif (!$entry->exists('cn')) {
+                               my $tmp_dn= $entry->dn();
+                               my $tmp_release = ($1) if $tmp_dn =~ /^(.*?),$fai_base$/;
+
+                               # Skip classes without releases
+                               if((!defined($tmp_release)) || length($tmp_release)==0) {
+                                       next;
+                               }
+
+                               if($tmp_release =~ /^.*?,.*?$/ && (!($tmp_release =~ /^.*?\\,.*?$/))) {
+                                       # A Subrelease
+                                       my @sub_releases= split(/,/, $tmp_release);
+
+                                       # Walk through subreleases and build hash tree
+                                       my $hash;
+                                       while(my $tmp_sub_release = pop @sub_releases) {
+                                               $hash .= "\{'$tmp_sub_release'\}->";                                            
+                                       }
+                                       # Remove the last two characters
+                                       chop($hash);
+                                       chop($hash);
+
+                                       eval('$fai_classes->'.$hash.'= {}');
+                               } else {
+                                       # A branch, no subrelease
+                                       if(!exists($fai_classes->{$tmp_release})) {
+                                               $fai_classes->{$tmp_release} = {};
+                                       }
+                               }
+                       }
+               }
+
+               # The hash is complete, now we can honor the copy-on-write based missing entries
+               foreach my $release (keys %$fai_classes) {
+                       $result->{$release}= deep_copy(apply_fai_inheritance($fai_classes->{$release}));
+               }
+       }
+       return $result;
+}
+
+sub apply_fai_inheritance {
+       my $fai_classes = shift || return {};
+       my $tmp_classes;
+
+       # Get the classes from the branch
+       foreach my $class (keys %{$fai_classes}) {
+               # Skip subreleases
+               if($class =~ /^ou=.*$/) {
+                       next;
+               } else {
+                       $tmp_classes->{$class}= deep_copy($fai_classes->{$class});
+               }
+       }
+
+       # Apply to each subrelease
+       foreach my $subrelease (keys %{$fai_classes}) {
+               if($subrelease =~ /ou=/) {
+                       foreach my $tmp_class (keys %{$tmp_classes}) {
+                               if(!exists($fai_classes->{$subrelease}->{$tmp_class})) {
+                                       $fai_classes->{$subrelease}->{$tmp_class} =
+                                       deep_copy($tmp_classes->{$tmp_class});
+                               } else {
+                                       foreach my $type (keys %{$tmp_classes->{$tmp_class}}) {
+                                               if(!exists($fai_classes->{$subrelease}->{$tmp_class}->{$type})) {
+                                                       $fai_classes->{$subrelease}->{$tmp_class}->{$type}=
+                                                       deep_copy($tmp_classes->{$tmp_class}->{$type});
+                                               }
+                                       }
+                               }
+                       }
+               }
+       }
+
+       # Find subreleases in deeper levels
+       foreach my $subrelease (keys %{$fai_classes}) {
+               if($subrelease =~ /ou=/) {
+                       foreach my $subsubrelease (keys %{$fai_classes->{$subrelease}}) {
+                               if($subsubrelease =~ /ou=/) {
+                                       apply_fai_inheritance($fai_classes->{$subrelease});
+                               }
+                       }
+               }
+       }
+
+       return $fai_classes;
+}
+
+sub get_fai_release_entries {
+       my $tmp_classes = shift || return;
+       my $parent = shift || "";
+       my @result = shift || ();
+
+       foreach my $entry (keys %{$tmp_classes}) {
+               if(defined($entry)) {
+                       if($entry =~ /^ou=.*$/) {
+                               my $release_name = $entry;
+                               $release_name =~ s/ou=//g;
+                               if(length($parent)>0) {
+                                       $release_name = $parent."/".$release_name;
+                               }
+                               my @bufentries = get_fai_release_entries($tmp_classes->{$entry}, $release_name, @result);
+                               foreach my $bufentry(@bufentries) {
+                                       push @result, $bufentry;
+                               }
+                       } else {
+                               my @types = get_fai_types($tmp_classes->{$entry});
+                               foreach my $type (@types) {
+                                       push @result, 
+                                       {
+                                               'class' => $entry,
+                                               'type' => $type->{'type'},
+                                               'release' => $parent,
+                                               'state' => $type->{'state'},
+                                       };
+                               }
+                       }
+               }
+       }
+
+       return @result;
+}
+
+sub deep_copy {
+       my $this = shift;
+       if (not ref $this) {
+               $this;
+       } elsif (ref $this eq "ARRAY") {
+               [map deep_copy($_), @$this];
+       } elsif (ref $this eq "HASH") {
+               +{map { $_ => deep_copy($this->{$_}) } keys %$this};
+       } else { die "what type is $_?" }
+}
+
+
+sub session_run_result {
+    my ($kernel, $heap, $client_answer) = @_[KERNEL, HEAP, ARG0];    
+    $kernel->sig(CHLD => "child_reap");
+}
+
+sub session_run_debug {
+    my $result = $_[ARG0];
+    print STDERR "$result\n";
+}
+
+sub session_run_done {
+    my ( $kernel, $heap, $task_id ) = @_[ KERNEL, HEAP, ARG0 ];
+    delete $heap->{task}->{$task_id};
+}
+
+
+sub create_sources_list {
+       my $session_id = shift;
+       my $ldap_handle = &main::get_ldap_handle;
+       my $result="/tmp/gosa_si_tmp_sources_list";
+
+       # Remove old file
+       if(stat($result)) {
+               unlink($result);
+               &main::daemon_log("$session_id DEBUG: remove an old version of '$result'", 7); 
+       }
+
+       my $fh;
+       open($fh, ">$result");
+       if (not defined $fh) {
+               &main::daemon_log("$session_id DEBUG: cannot open '$result' for writing", 7); 
+               return undef;
+       }
+       if(defined($main::ldap_server_dn) and length($main::ldap_server_dn) > 0) {
+               my $mesg=$ldap_handle->search(
+                       base    => $main::ldap_server_dn,
+                       scope   => 'base',
+                       attrs   => 'FAIrepository',
+                       filter  => 'objectClass=FAIrepositoryServer'
+               );
+               if($mesg->count) {
+                       foreach my $entry(@{$mesg->{'entries'}}) {
+                               foreach my $value(@{$entry->get_value('FAIrepository', asref => 1)}) {
+                                       my ($server, $tag, $release, $sections)= split /\|/, $value;
+                                       my $line = "deb $server $release";
+                                       $sections =~ s/,/ /g;
+                                       $line.= " $sections";
+                                       print $fh $line."\n";
+                               }
+                       }
+               }
+       } else {
+               if (defined $main::ldap_server_dn){
+                       &main::daemon_log("$session_id ERROR: something wrong with ldap_server_dn '$main::ldap_server_dn', abort create_sources_list", 1); 
+               } else {
+                       &main::daemon_log("$session_id ERROR: no ldap_server_dn found, abort create_sources_list", 1);
+               }
+       }
+       close($fh);
+
+       return $result;
+}
+
+
+sub run_create_packages_list_db {
+    my ($kernel, $session, $heap) = @_[KERNEL, SESSION, HEAP];
+       my $session_id = $session->ID;
+
+       my $task = POE::Wheel::Run->new(
+                                       Priority => +20,
+                                       Program => sub {&create_packages_list_db(undef, undef, $session_id)},
+                                       StdoutEvent  => "session_run_result",
+                                       StderrEvent  => "session_run_debug",
+                                       CloseEvent   => "session_run_done",
+                                       );
+       $heap->{task}->{ $task->ID } = $task;
+}
+
+
+sub create_packages_list_db {
+       my ($ldap_handle, $sources_file, $session_id) = @_;
+       
+       # it should not be possible to trigger a recreation of packages_list_db
+       # while packages_list_db is under construction, so set flag packages_list_under_construction
+       # which is tested befor recreation can be started
+       if (-r $packages_list_under_construction) {
+               daemon_log("$session_id WARNING: packages_list_db is right now under construction, please wait until this process is finished", 3);
+               return;
+       } else {
+               daemon_log("$session_id INFO: create_packages_list_db: start", 5); 
+               # set packages_list_under_construction to true
+               system("touch $packages_list_under_construction");
+               @packages_list_statements=();
+       }
+
+       if (not defined $session_id) { $session_id = 0; }
+       if (not defined $ldap_handle) { 
+               $ldap_handle= &get_ldap_handle();
+
+               if (not defined $ldap_handle) {
+                       daemon_log("$session_id ERROR: no ldap_handle available to create_packages_list_db", 1);
+                       unlink($packages_list_under_construction);
+                       return;
+               }
+       }
+       if (not defined $sources_file) { 
+               &main::daemon_log("$session_id INFO: no sources_file given for creating packages list so trigger creation of it", 5); 
+               $sources_file = &create_sources_list($session_id);
+       }
+
+       if (not defined $sources_file) {
+               &main::daemon_log("$session_id ERROR: no sources_file given under '$sources_file', skip create_packages_list_db", 1); 
+               unlink($packages_list_under_construction);
+               return;
+       }
+
+       my $line;
+
+       open(CONFIG, "<$sources_file") or do {
+               daemon_log( "$session_id ERROR: create_packages_list_db: Failed to open '$sources_file'", 1);
+               unlink($packages_list_under_construction);
+               return;
+       };
+
+       # Read lines
+       while ($line = <CONFIG>){
+               # Unify
+               chop($line);
+               $line =~ s/^\s+//;
+               $line =~ s/^\s+/ /;
+
+               # Strip comments
+               $line =~ s/#.*$//g;
+
+               # Skip empty lines
+               if ($line =~ /^\s*$/){
+                       next;
+               }
+
+               # Interpret deb line
+               if ($line =~ /^deb [^\s]+\s[^\s]+\s[^\s]+/){
+                       my( $baseurl, $dist, $sections ) = ($line =~ /^deb\s([^\s]+)\s+([^\s]+)\s+(.*)$/);
+                       my $section;
+                       foreach $section (split(' ', $sections)){
+                               &parse_package_info( $baseurl, $dist, $section, $session_id );
+                       }
+               }
+       }
+
+       close (CONFIG);
+
+       find(\&cleanup_and_extract, keys( %repo_dirs ));
+       &main::strip_packages_list_statements();
+       unshift @packages_list_statements, "VACUUM";
+       $packages_list_db->exec_statementlist(\@packages_list_statements);
+       unlink($packages_list_under_construction);
+       daemon_log("$session_id INFO: create_packages_list_db: finished", 5); 
+       return;
+}
+
+# This function should do some intensive task to minimize the db-traffic
+sub strip_packages_list_statements {
+    my @existing_entries= @{$packages_list_db->exec_statement("SELECT * FROM $main::packages_list_tn")};
+       my @new_statement_list=();
+       my $hash;
+       my $insert_hash;
+       my $update_hash;
+       my $delete_hash;
+       my $local_timestamp=get_time();
+
+       foreach my $existing_entry (@existing_entries) {
+               $hash->{@{$existing_entry}[0]}->{@{$existing_entry}[1]}->{@{$existing_entry}[2]}= $existing_entry;
+       }
+
+       foreach my $statement (@packages_list_statements) {
+               if($statement =~ /^INSERT/i) {
+                       # Assign the values from the insert statement
+                       my ($distribution,$package,$version,$section,$description,$template,$timestamp) = ($1,$2,$3,$4,$5,$6,$7) if $statement =~ 
+                       /^INSERT\s+?INTO\s+?$main::packages_list_tn\s+?VALUES\s*?\('(.*?)',\s*?'(.*?)',\s*?'(.*?)',\s*?'(.*?)',\s*?'(.*?)',\s*?'(.*?)',\s*?'(.*?)'\s*?\)$/si;
+                       if(exists($hash->{$distribution}->{$package}->{$version})) {
+                               # If section or description has changed, update the DB
+                               if( 
+                                       (! (@{$hash->{$distribution}->{$package}->{$version}}[3] eq $section)) or 
+                                       (! (@{$hash->{$distribution}->{$package}->{$version}}[4] eq $description))
+                               ) {
+                                       @{$update_hash->{$distribution}->{$package}->{$version}} = ($distribution,$package,$version,$section,$description,undef);
+                               }
+                       } else {
+                               # Insert a non-existing entry to db
+                               @{$insert_hash->{$distribution}->{$package}->{$version}} = ($distribution,$package,$version,$section,$description,$template);
+                       }
+               } elsif ($statement =~ /^UPDATE/i) {
+                       my ($template,$package,$version) = ($1,$2,$3) if $statement =~
+                       /^update\s+?$main::packages_list_tn\s+?set\s+?template\s*?=\s*?'(.*?)'\s+?where\s+?package\s*?=\s*?'(.*?)'\s+?and\s+?version\s*?=\s*?'(.*?)'\s*?;$/si;
+                       foreach my $distribution (keys %{$hash}) {
+                               if(exists($insert_hash->{$distribution}->{$package}->{$version})) {
+                                       # update the insertion hash to execute only one query per package (insert instead insert+update)
+                                       @{$insert_hash->{$distribution}->{$package}->{$version}}[5]= $template;
+                               } elsif(exists($hash->{$distribution}->{$package}->{$version})) {
+                                       if( ! (@{$hash->{$distribution}->{$package}->{$version}}[5] eq $template)) {
+                                               my $section;
+                                               my $description;
+                                               if(defined(@{$update_hash->{$distribution}->{$package}->{$version}}[3]) and
+                                                       length(@{$update_hash->{$distribution}->{$package}->{$version}}[3]) > 0 ) {
+                                                       $section= @{$update_hash->{$distribution}->{$package}->{$version}}[3];
+                                               }
+                                               if(defined(@{$update_hash->{$distribution}->{$package}->{$version}}[4])) {
+                                                       $description= @{$update_hash->{$distribution}->{$package}->{$version}}[4];
+                                               }
+                                               @{$update_hash->{$distribution}->{$package}->{$version}} = ($distribution,$package,$version,$section,$description,$template);
+                                       }
+                               }
+                       }
+               }
+       }
+
+       # TODO: Check for orphaned entries
+
+       # unroll the insert_hash
+       foreach my $distribution (keys %{$insert_hash}) {
+               foreach my $package (keys %{$insert_hash->{$distribution}}) {
+                       foreach my $version (keys %{$insert_hash->{$distribution}->{$package}}) {
+                               push @new_statement_list, "INSERT INTO $main::packages_list_tn VALUES ('$distribution','$package','$version',"
+                               ."'@{$insert_hash->{$distribution}->{$package}->{$version}}[3]',"
+                               ."'@{$insert_hash->{$distribution}->{$package}->{$version}}[4]',"
+                               ."'@{$insert_hash->{$distribution}->{$package}->{$version}}[5]',"
+                               ."'$local_timestamp')";
+                       }
+               }
+       }
+
+       # unroll the update hash
+       foreach my $distribution (keys %{$update_hash}) {
+               foreach my $package (keys %{$update_hash->{$distribution}}) {
+                       foreach my $version (keys %{$update_hash->{$distribution}->{$package}}) {
+                               my $set = "";
+                               if(defined(@{$update_hash->{$distribution}->{$package}->{$version}}[3])) {
+                                       $set .= "section = '@{$update_hash->{$distribution}->{$package}->{$version}}[3]', ";
+                               }
+                               if(defined(@{$update_hash->{$distribution}->{$package}->{$version}}[4])) {
+                                       $set .= "description = '@{$update_hash->{$distribution}->{$package}->{$version}}[4]', ";
+                               }
+                               if(defined(@{$update_hash->{$distribution}->{$package}->{$version}}[5])) {
+                                       $set .= "template = '@{$update_hash->{$distribution}->{$package}->{$version}}[5]', ";
+                               }
+                               if(defined($set) and length($set) > 0) {
+                                       $set .= "timestamp = '$local_timestamp'";
+                               } else {
+                                       next;
+                               }
+                               push @new_statement_list, 
+                                       "UPDATE $main::packages_list_tn SET $set WHERE"
+                                       ." distribution = '$distribution'"
+                                       ." AND package = '$package'"
+                                       ." AND version = '$version'";
+                       }
+               }
+       }
+
+       @packages_list_statements = @new_statement_list;
+}
+
+
+sub parse_package_info {
+    my ($baseurl, $dist, $section, $session_id)= @_;
+    my ($package);
+    if (not defined $session_id) { $session_id = 0; }
+    my ($path) = ($baseurl =~ m%://[^/]*(.*)$%);
+    $repo_dirs{ "${repo_path}/pool" } = 1;
+
+    foreach $package ("Packages.gz"){
+        daemon_log("$session_id DEBUG: create_packages_list: fetch $baseurl, $dist, $section", 7);
+        get_package( "$baseurl/dists/$dist/$section/binary-$arch/$package", "$outdir/$dist/$section", $session_id );
+        parse_package( "$outdir/$dist/$section", $dist, $path, $session_id );
+    }
+    
+}
+
+
+sub get_package {
+    my ($url, $dest, $session_id)= @_;
+    if (not defined $session_id) { $session_id = 0; }
+
+    my $tpath = dirname($dest);
+    -d "$tpath" || mkpath "$tpath";
+
+    # This is ugly, but I've no time to take a look at "how it works in perl"
+    if(0 == system("wget '$url' -O '$dest' 2>/dev/null") ) {
+        system("gunzip -cd '$dest' > '$dest.in'");
+        daemon_log("$session_id DEBUG: run command: gunzip -cd '$dest' > '$dest.in'", 5);
+        unlink($dest);
+        daemon_log("$session_id DEBUG: delete file '$dest'", 5); 
+    } else {
+        daemon_log("$session_id ERROR: create_packages_list_db: get_packages: fetching '$url' failed!", 1);
+    }
+    return 0;
+}
+
+
+sub parse_package {
+    my ($path, $dist, $srv_path, $session_id)= @_;
+    if (not defined $session_id) { $session_id = 0;}
+    my ($package, $version, $section, $description);
+    my $PACKAGES;
+    my $timestamp = &get_time();
+
+    if(not stat("$path.in")) {
+        daemon_log("$session_id ERROR: create_packages_list: parse_package: file '$path.in' is not readable",1);
+        return;
+    }
+
+    open($PACKAGES, "<$path.in");
+    if(not defined($PACKAGES)) {
+        daemon_log("$session_id ERROR: create_packages_list_db: parse_package: cannot open '$path.in'",1); 
+        return;
+    }
+
+    # Read lines
+    while (<$PACKAGES>){
+        my $line = $_;
+        # Unify
+        chop($line);
+
+        # Use empty lines as a trigger
+        if ($line =~ /^\s*$/){
+            my $sql = "INSERT INTO packages_list VALUES ('$dist', '$package', '$version', '$section', '$description', '', '$timestamp')";
+            push(@packages_list_statements, $sql);
+            $package = "none";
+            $version = "none";
+            $section = "none";
+            $description = "none"; 
+            next;
+        }
+
+        # Trigger for package name
+        if ($line =~ /^Package:\s/){
+            ($package)= ($line =~ /^Package: (.*)$/);
+            next;
+        }
+
+        # Trigger for version
+        if ($line =~ /^Version:\s/){
+            ($version)= ($line =~ /^Version: (.*)$/);
+            next;
+        }
+
+        # Trigger for description
+        if ($line =~ /^Description:\s/){
+            ($description)= &encode_base64(($line =~ /^Description: (.*)$/));
+            next;
+        }
+
+        # Trigger for section
+        if ($line =~ /^Section:\s/){
+            ($section)= ($line =~ /^Section: (.*)$/);
+            next;
+        }
+
+        # Trigger for filename
+        if ($line =~ /^Filename:\s/){
+            my ($filename) = ($line =~ /^Filename: (.*)$/);
+            store_fileinfo( $package, $filename, $dist, $srv_path, $version, $repo_path );
+            next;
+        }
+    }
+
+    close( $PACKAGES );
+    unlink( "$path.in" );
+}
+
+
+sub store_fileinfo {
+    my( $package, $file, $dist, $path, $vers, $srvdir) = @_;
+
+    my %fileinfo = (
+        'package' => $package,
+        'dist' => $dist,
+        'version' => $vers,
+    );
+
+    $repo_files{ "${srvdir}/$file" } = \%fileinfo;
+}
+
+
+sub cleanup_and_extract {
+    my $fileinfo = $repo_files{ $File::Find::name };
+
+    if( defined $fileinfo ) {
+
+        my $dir = "$outdir/$fileinfo->{ 'dist' }/debconf.d";
+        my $sql;
+        my $package = $fileinfo->{ 'package' };
+        my $newver = $fileinfo->{ 'version' };
+
+        mkpath($dir);
+        system( "dpkg -e '$File::Find::name' '$dir/DEBIAN'" );
+
+               if( -f "$dir/DEBIAN/templates" ) {
+
+                       daemon_log("DEBUG: Found debconf templates in '$package' - $newver", 5);
+
+                       my $tmpl= "";
+                       {
+                               local $/=undef;
+                               open FILE, "$dir/DEBIAN/templates";
+                               $tmpl = &encode_base64(<FILE>);
+                               close FILE;
+                       }
+                       rmtree("$dir/DEBIAN/templates");
+
+                       $sql= "update $main::packages_list_tn set template = '$tmpl' where package = '$package' and version = '$newver';";
+               push @packages_list_statements, $sql;
+               }
+    }
+
+    return;
+}
+
+
+sub register_at_foreign_servers {   
+    my ($kernel) = $_[KERNEL];
+
+    # hole alle bekannten server aus known_server_db
+    my $server_sql = "SELECT * FROM $known_server_tn";
+    my $server_res = $known_server_db->exec_statement($server_sql);
+
+    # no entries in known_server_db
+    if (not ref(@$server_res[0]) eq "ARRAY") { 
+        # TODO
+    }
+
+    # detect already connected clients
+    my $client_sql = "SELECT * FROM $known_clients_tn"; 
+    my $client_res = $known_clients_db->exec_statement($client_sql);
+
+    # send my server details to all other gosa-si-server within the network
+    foreach my $hit (@$server_res) {
+        my $hostname = @$hit[0];
+        my $hostkey = &create_passwd;
+
+        # add already connected clients to registration message 
+        my $myhash = &create_xml_hash('new_server', $server_address, $hostname);
+        &add_content2xml_hash($myhash, 'key', $hostkey);
+        map(&add_content2xml_hash($myhash, 'client', @{$_}[0].",".@{$_}[4]), @$client_res);
+        
+        # build registration message and send it
+        my $foreign_server_msg = &create_xml_string($myhash);
+        my $error = &send_msg_to_target($foreign_server_msg, $hostname, $ServerPackages_key, "new_server", 0); 
+    }
+    
+    $kernel->delay_set("register_at_foreign_servers", $foreign_servers_register_delay); 
+    return;
+}
+
+
+#==== MAIN = main ==============================================================
+#  parse commandline options
+Getopt::Long::Configure( "bundling" );
+GetOptions("h|help" => \&usage,
+        "c|config=s" => \$cfg_file,
+        "f|foreground" => \$foreground,
+        "v|verbose+" => \$verbose,
+        "no-arp+" => \$no_arp,
+           );
+
+#  read and set config parameters
+&check_cmdline_param ;
+&read_configfile;
+&check_pid;
+
+$SIG{CHLD} = 'IGNORE';
+
+# forward error messages to logfile
+if( ! $foreground ) {
+  open( STDIN,  '+>/dev/null' );
+  open( STDOUT, '+>&STDIN'    );
+  open( STDERR, '+>&STDIN'    );
+}
+
+# Just fork, if we are not in foreground mode
+if( ! $foreground ) { 
+    chdir '/'                 or die "Can't chdir to /: $!";
+    $pid = fork;
+    setsid                    or die "Can't start a new session: $!";
+    umask 0;
+} else { 
+    $pid = $$; 
+}
+
+# Do something useful - put our PID into the pid_file
 if( 0 != $pid ) {
     open( LOCK_FILE, ">$pid_file" );
     print LOCK_FILE "$pid\n";
@@ -1092,51 +2905,190 @@ if( 0 != $pid ) {
     };
 }
 
+# parse head url and revision from svn
+my $server_status_hash = { 'developmental'=>'revision', 'stable'=>'release'};
+$server_version =~ /^\$HeadURL: (\S+) \$:\$Rev: (\d+) \$$/;
+$server_headURL = defined $1 ? $1 : 'unknown' ;
+$server_revision = defined $2 ? $2 : 'unknown' ;
+if ($server_headURL =~ /\/tag\// || 
+        $server_headURL =~ /\/branches\// ) {
+    $server_status = "stable"; 
+} else {
+    $server_status = "developmental" ;
+}
+
+
 daemon_log(" ", 1);
 daemon_log("$0 started!", 1);
+daemon_log("status: $server_status", 1);
+daemon_log($server_status_hash->{$server_status}.": $server_revision", 1); 
 
-# delete old DBsqlite lock files
-system('rm -f /tmp/gosa_si_lock*gosa-si-server*');
+# connect to incoming_db
+unlink($incoming_file_name);
+$incoming_db = GOSA::DBsqlite->new($incoming_file_name);
+$incoming_db->create_table($incoming_tn, \@incoming_col_names);
 
 # connect to gosa-si job queue
-my @job_col_names = ("id INTEGER", "timestamp", "status", "result", "headertag", "targettag", "xmlmessage", "macaddress");
 $job_db = GOSA::DBsqlite->new($job_queue_file_name);
-$job_db->create_table('jobs', \@job_col_names);
+$job_db->create_table($job_queue_tn, \@job_queue_col_names);
 
 # connect to known_clients_db
-my @clients_col_names = ('hostname', 'status', 'hostkey', 'timestamp', 'macaddress', 'events');
 $known_clients_db = GOSA::DBsqlite->new($known_clients_file_name);
-$known_clients_db->create_table('known_clients', \@clients_col_names);
+$known_clients_db->create_table($known_clients_tn, \@known_clients_col_names);
+
+# connect to foreign_clients_db
+$foreign_clients_db = GOSA::DBsqlite->new($foreign_clients_file_name);
+$foreign_clients_db->create_table($foreign_clients_tn, \@foreign_clients_col_names);
 
 # connect to known_server_db
-my @server_col_names = ('hostname', 'status', 'hostkey', 'timestamp');
+unlink($known_server_file_name);
 $known_server_db = GOSA::DBsqlite->new($known_server_file_name);
-$known_server_db->create_table('known_server', \@server_col_names);
+$known_server_db->create_table($known_server_tn, \@known_server_col_names);
+
+# connect to login_usr_db
+$login_users_db = GOSA::DBsqlite->new($login_users_file_name);
+$login_users_db->create_table($login_users_tn, \@login_users_col_names);
+
+# connect to fai_server_db and fai_release_db
+unlink($fai_server_file_name);
+$fai_server_db = GOSA::DBsqlite->new($fai_server_file_name);
+$fai_server_db->create_table($fai_server_tn, \@fai_server_col_names);
+
+unlink($fai_release_file_name);
+$fai_release_db = GOSA::DBsqlite->new($fai_release_file_name);
+$fai_release_db->create_table($fai_release_tn, \@fai_release_col_names);
+
+# connect to packages_list_db
+#unlink($packages_list_file_name);
+unlink($packages_list_under_construction);
+$packages_list_db = GOSA::DBsqlite->new($packages_list_file_name);
+$packages_list_db->create_table($packages_list_tn, \@packages_list_col_names);
+
+# connect to messaging_db
+$messaging_db = GOSA::DBsqlite->new($messaging_file_name);
+$messaging_db->create_table($messaging_tn, \@messaging_col_names);
+
 
 # create xml object used for en/decrypting
 $xml = new XML::Simple();
 
-# create socket for incoming xml messages
+
+# foreign servers 
+my @foreign_server_list;
+
+# add foreign server from cfg file
+if ($foreign_server_string ne "") {
+    my @cfg_foreign_server_list = split(",", $foreign_server_string);
+    foreach my $foreign_server (@cfg_foreign_server_list) {
+        push(@foreign_server_list, $foreign_server);
+    }
+}
+
+# add foreign server from dns
+my @tmp_servers;
+if ( !$server_domain) {
+    # Try our DNS Searchlist
+    for my $domain(get_dns_domains()) {
+        chomp($domain);
+        my @tmp_domains= &get_server_addresses($domain);
+        if(@tmp_domains) {
+            for my $tmp_server(@tmp_domains) {
+                push @tmp_servers, $tmp_server;
+            }
+        }
+    }
+    if(@tmp_servers && length(@tmp_servers)==0) {
+        daemon_log("0 WARNING: no foreign gosa-si-server found in DNS for domain '$server_domain'", 3);
+    }
+} else {
+    @tmp_servers = &get_server_addresses($server_domain);
+    if( 0 == @tmp_servers ) {
+        daemon_log("0 WARNING: no foreign gosa-si-server found in DNS for domain '$server_domain'", 3);
+    }
+}
+foreach my $server (@tmp_servers) { 
+    unshift(@foreign_server_list, $server); 
+}
+# eliminate duplicate entries
+@foreign_server_list = &del_doubles(@foreign_server_list);
+my $all_foreign_server = join(", ", @foreign_server_list);
+daemon_log("0 INFO: found foreign server in config file and DNS: $all_foreign_server", 5);
+
+# add all found foreign servers to known_server
+my $act_timestamp = &get_time();
+foreach my $foreign_server (@foreign_server_list) {
+
+       # do not add myself to known_server_db
+       if (&is_local($foreign_server)) { next; }
+       ######################################
+
+    my $res = $known_server_db->add_dbentry( {table=>$known_server_tn, 
+            primkey=>['hostname'],
+            hostname=>$foreign_server,
+            status=>'not_jet_registered',
+            hostkey=>"none",
+            timestamp=>$act_timestamp,
+            } );
+}
+
+
+# import all modules
+&import_modules;
+# check wether all modules are gosa-si valid passwd check
+&password_check;
+
+
 POE::Component::Server::TCP->new(
+    Alias => "TCP_SERVER",
        Port => $server_port,
-       ClientInput => \&client_input,
+       ClientInput => sub {
+        my ($kernel, $input) = @_[KERNEL, ARG0];
+        push(@tasks, $input);
+        push(@msgs_to_decrypt, $input);
+        $kernel->yield("msg_to_decrypt");
+        },
+    InlineStates => {
+        msg_to_decrypt => \&msg_to_decrypt,
+        next_task => \&next_task,
+        task_result => \&handle_task_result,
+        task_done   => \&handle_task_done,
+        task_debug  => \&handle_task_debug,
+        child_reap => sub { "Do nothing special. I'm just a comment, but i'm necessary!"  },
+    }
 );
+
 daemon_log("start socket for incoming xml messages at port '$server_port' ", 1);
 
 # create session for repeatedly checking the job queue for jobs
 POE::Session->create(
        inline_states => {
-               _start => \&_start,
+               _start => \&session_start,
+        register_at_foreign_servers => \&register_at_foreign_servers,
+        sig_handler => \&sig_handler,
+        next_task => \&next_task,
+        task_result => \&handle_task_result,
+        task_done   => \&handle_task_done,
+        task_debug  => \&handle_task_debug,
+        watch_for_next_tasks => \&watch_for_next_tasks,
+        watch_for_new_messages => \&watch_for_new_messages,
+        watch_for_delivery_messages => \&watch_for_delivery_messages,
+        watch_for_done_messages => \&watch_for_done_messages,
                watch_for_new_jobs => \&watch_for_new_jobs,
+        watch_for_modified_jobs => \&watch_for_modified_jobs,
+        watch_for_done_jobs => \&watch_for_done_jobs,
+        watch_for_old_known_clients => \&watch_for_old_known_clients,
+        create_packages_list_db => \&run_create_packages_list_db,
+        create_fai_server_db => \&run_create_fai_server_db,
+        create_fai_release_db => \&run_create_fai_release_db,
+               recreate_packages_db => \&run_recreate_packages_db,
+        session_run_result => \&session_run_result,
+        session_run_debug => \&session_run_debug,
+        session_run_done => \&session_run_done,
+        child_reap => sub { "Do nothing special. I'm just a comment, but i'm necessary!"  },
        }
 );
 
 
-# import all modules
-&import_modules;
-
-# check wether all modules are gosa-si valid passwd check
-
 POE::Kernel->run();
 exit;