Code

Added a few krb5 functions
[gosa.git] / gosa-si / gosa-si-server
index 8a69ca4182244fd9eb8711f2ad255f24177d5462..612e01436e23a97e714b42aeff87bc46e63dad8d 100755 (executable)
@@ -106,8 +106,10 @@ $ping_timeout = 5;
 
 $no_bus = 0;
 $bus_activ = "true";
-
 $no_arp = 0;
+my $packages_list_under_construction = "/tmp/packages_list_creation_in_progress";
+my @packages_list_statements;
+my $watch_for_new_jobs_in_progress = 0;
 
 our $prg= basename($0);
 
@@ -115,12 +117,12 @@ our $prg= basename($0);
 our $job_db;
 our $job_queue_tn = 'jobs';
 my $job_queue_file_name;
-my @job_queue_col_names = ("id INTEGER", 
-               "timestamp", 
+my @job_queue_col_names = ("id INTEGER PRIMARY KEY", 
+               "timestamp DEFAULT 'none'", 
                "status DEFAULT 'none'", 
                "result DEFAULT 'none'", 
                "progress DEFAULT 'none'", 
-               "headertag DEFAULT 'none'", 
+        "headertag DEFAULT 'none'", 
                "targettag DEFAULT 'none'", 
                "xmlmessage DEFAULT 'none'", 
                "macaddress DEFAULT 'none'",
@@ -131,40 +133,44 @@ my @job_queue_col_names = ("id INTEGER",
 our $known_server_db;
 our $known_server_tn = "known_server";
 my $known_server_file_name;
-my @known_server_col_names = ('hostname', 'status', 'hostkey', 'timestamp');
+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');
+my @known_clients_col_names = ("hostname", "status", "hostkey", "timestamp", "macaddress", "events");
 
 # 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');
+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_server_col_names = ("timestamp", "server", "release", "sections", "tag"); 
+
+our $fai_release_db;
 our $fai_release_tn = "fai_release"; 
-our @fai_release_col_names = ('timestamp', 'release', 'class', 'type', 'state'); 
+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');
+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 = ('subject', 'message_from', 'message_to', 'flag', 'direction', 'delivery_time', 'message', 'timestamp', 'id INTEGER' );
+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
@@ -188,7 +194,8 @@ my $max_children = 2;
     "known-clients" => [\$known_clients_file_name, '/var/lib/gosa-si/clients.db' ],
     "known-servers" => [\$known_server_file_name, '/var/lib/gosa-si/servers.db'],
     "login-users" => [\$login_users_file_name, '/var/lib/gosa-si/users.db'],
-    "fai-server" => [\$fai_server_file_name, '/var/lib/gosa-si/fai.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'],
     "source-list" => [\$sources_list, '/etc/apt/sources.list'],
@@ -281,6 +288,7 @@ sub daemon_log {
             print STDERR "cannot open $log_file: $!";
             return }
             chomp($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);
@@ -950,7 +958,7 @@ sub update_jobdb_status_for_send_msgs {
             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'";
+                    "WHERE id=$jobdb_id";
                 my $res = $job_db->update_dbentry($sql_statement);
             }
 
@@ -958,7 +966,7 @@ sub update_jobdb_status_for_send_msgs {
         } else {
             my $sql_statement = "UPDATE $job_queue_tn ".
                 "SET status='done' ".
-                "WHERE id='$jobdb_id' AND status='processed'";
+                "WHERE id=$jobdb_id AND status='processed'";
             my $res = $job_db->update_dbentry($sql_statement);
         }
     }
@@ -1042,7 +1050,7 @@ sub process_task {
 
     daemon_log("", 5); 
     daemon_log("$session_id INFO: Incoming msg with session ID $session_id from '".$heap->{'remote_ip'}."'", 5);
-    daemon_log("$session_id DEBUG: Incoming msg:\n$input", 9);
+    #daemon_log("$session_id DEBUG: Incoming msg:\n$input", 9);
 
     ####################
     # check incoming msg
@@ -1084,7 +1092,10 @@ sub process_task {
         if ( 0 < @{$answer_l} ) {
             my $answer_str = join("\n", @{$answer_l});
             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++ };
 
@@ -1238,10 +1249,11 @@ sub trigger_db_loop {
        my ($kernel) = @_ ;
        $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_new_messages', $messaging_db_loop_delay);
-    $kernel->delay_set('watch_for_done_messages', $messaging_db_loop_delay);
+       $kernel->delay_set('watch_for_new_messages', $messaging_db_loop_delay);
+       $kernel->delay_set('watch_for_done_messages', $messaging_db_loop_delay);
 }
 
+
 sub watch_for_done_jobs {
     my ($kernel,$heap) = @_[KERNEL, HEAP];
 
@@ -1251,91 +1263,107 @@ sub watch_for_done_jobs {
 
     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);
+        my $sql_statement = "DELETE FROM $job_queue_tn WHERE id=$jobdb_id"; 
+        my $res = $job_db->del_dbentry($sql_statement);        
     }
 
     $kernel->delay_set('watch_for_done_jobs',$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_tn WHERE status='waiting' AND (CAST (timestamp AS INTEGER) + 120) < $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}->{$headertag})) {
-                       push @drops, "DELETE FROM $job_queue_tn WHERE id = '$hits->{$macaddress}->{$headertag}[0]'";
+       if($watch_for_new_jobs_in_progress == 0) {
+               $watch_for_new_jobs_in_progress = 1;
+               my ($kernel,$heap) = @_[KERNEL, HEAP];
+
+               # check gosa job queue for jobs with executable timestamp
+               my $timestamp = &get_time();
+               my $sql_statement = "SELECT * FROM $job_queue_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;
                }
-               $hits->{$macaddress}->{$headertag}= $hit;
-       }
 
-       # 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];
-                       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'";
+               # 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);
+                               }
                        }
                }
-       }
 
-       # Commit deletion
-       $job_db->exec_statementlist(\@drops);
+               # Commit deletion
+               $job_db->exec_statementlist(\@drops);
 
-       # Look for new jobs that could be executed
-       foreach my $macaddress (keys %{$hits}) {
+               # Look for new jobs that could be executed
+               foreach my $macaddress (keys %{$hits}) {
 
-               # 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 );
+                       # 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 );
 
-               # Skip new jobs for host if there is a processing job
-               if(defined($res) and defined @{$res}[0]) {
-                       next;
-               }
+                       # 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];
-                       my $job_msg = @{$hits->{$macaddress}->{$jobdb_headertag}}[7];
+                       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 );
+                                       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};
+                                       # expect macaddress is unique!!!!!!
+                                       my $target = $res_hash->{1}->{hostname};
 
-                       # change header
-                       $job_msg =~ s/<header>job_/<header>gosa_/;
+                                       # change header
+                                       $job_msg =~ s/<header>job_/<header>gosa_/;
 
-                       # add sqlite_id
-                       $job_msg =~ s/<\/xml>$/<jobdb_id>$jobdb_id<\/jobdb_id><\/xml>/;
+                                       # 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");
+                                       $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);
+                                       # 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;
+                                       # We don't want parallel processing
+                                       last;
+                               }
+                       }
                }
-       }
 
-       $kernel->delay_set('watch_for_new_jobs', $job_queue_loop_delay);
+               $watch_for_new_jobs_in_progress = 0;
+               $kernel->delay_set('watch_for_new_jobs', $job_queue_loop_delay);
+       }
 }
 
 
@@ -1345,37 +1373,36 @@ sub watch_for_new_messages {
     
     # check messaging_db for new incoming messages with executable timestamp
     my $timestamp = &get_time();
-    #my $sql_statement = "SELECT * FROM $messaging_tn WHERE (CAST (delivery_time AS INTEGER) + 120) < $timestamp";
     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}[2];
+        my $message_to = @{$hit}[3];
 
         # translate message_to to plain login name
+# TODO implement reciever translation
         my @reciever_l = ($message_to);  
-        my $message_id = @{$hit}[8];
+        my $message_id = @{$hit}[0];
 
         #add each outgoing msg to messaging_db
         my $reciever;
         foreach $reciever (@reciever_l) {
-            my $sql_statement = "INSERT INTO $messaging_tn (subject, message_from, message_to, flag, direction, delivery_time, message, timestamp, id) ".
+            my $sql_statement = "INSERT INTO $messaging_tn (id, subject, message_from, message_to, flag, direction, delivery_time, message, timestamp) ".
                 "VALUES ('".
-                @{$hit}[0]."', '".   # subject
-                @{$hit}[1]."', '".   # message_from
-                $reciever."', '".    # message_to
-                "none"."', '".       # flag
-                "out"."', '".        # direction
-                @{$hit}[5]."', '".   # delivery_time
-                @{$hit}[6]."', '".   # message
-                $timestamp."', '".   # timestamp
-                @{$hit}[8].          # id
-                "')";
+                $message_id."', '".    # id
+                @{$hit}[1]."', '".     # subject
+                @{$hit}[2]."', '".     # message_from
+                $reciever."', '".      # message_to
+                "none"."', '".         # flag
+                "out"."', '".          # direction
+                @{$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 '".@{$hit}[8]."' is prepared for delivery to reciever '$reciever'", 5);
+            &daemon_log("M INFO: message '".@{$hit}[0]."' is prepared for delivery to reciever '$reciever'", 5);
         }
 
         # send outgoing messages
@@ -1383,7 +1410,7 @@ sub watch_for_new_messages {
         my $res = $messaging_db->exec_statement( $sql_statement );
         foreach my $hit (@{$res}) {
             # add subject, from, to and message to list coll_user_msg
-            my @user_msg = [@{$hit}[0], @{$hit}[1], $reciever, @{$hit}[6]];
+            my @user_msg = [@{$hit}[1], @{$hit}[2], $reciever, @{$hit}[7]];
             push( @coll_user_msg, \@user_msg);
         }
 
@@ -1401,7 +1428,7 @@ sub watch_for_new_messages {
         $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 '".@{$hit}[8]."' is set to flag 'p' (processed)", 5);
+        &daemon_log("M INFO: message '$message_id' is set to flag 'p' (processed)", 5);
 
     }
     
@@ -1426,6 +1453,7 @@ sub get_ldap_handle {
        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); 
@@ -1597,12 +1625,29 @@ sub change_goto_state {
 }
 
 
+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, $dont_create_packages_list) = @_;
+    my ($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("INFO: create_fai_server_db: start", 5);
+               daemon_log("$session_id INFO: create_fai_server_db: start", 5);
                my $mesg= $ldap_handle->search(
                        base   => $ldap_base,
                        scope  => 'sub',
@@ -1629,11 +1674,11 @@ sub create_fai_server_db {
                                   }
                           }
                   }
-               daemon_log("INFO: create_fai_server_db: finished", 5);
+               daemon_log("$session_id INFO: create_fai_server_db: finished", 5);
 
                # TODO: Find a way to post the 'create_packages_list_db' event
-               if(!defined($dont_create_packages_list)) {
-                       &create_packages_list_db($ldap_handle);
+               if(not defined($dont_create_packages_list)) {
+                       &create_packages_list_db(undef, undef, $session_id);
                }
        }       
     
@@ -1641,10 +1686,12 @@ sub create_fai_server_db {
        return $result;
 }
 
-sub run_create_fai_server_db {
-    my ($kernel, $session, $heap, $table_name) = @_[KERNEL, SESSION, HEAP, ARG0];
+
+sub run_create_fai_release_db {
+    my ($session, $heap, $table_name) = @_[SESSION, HEAP, ARG0];
+       my $session_id = $session->ID;
     my $task = POE::Wheel::Run->new(
-            Program => sub { &create_fai_server_db($table_name,$kernel) },
+            Program => sub { &create_fai_release_db($table_name, $session_id) },
             StdoutEvent  => "session_run_result",
             StderrEvent  => "session_run_debug",
             CloseEvent   => "session_run_done",
@@ -1656,12 +1703,15 @@ sub run_create_fai_server_db {
 
 
 sub create_fai_release_db {
-       my ($table_name) = @_;
+       my ($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("INFO: create_fai_release_db: start",5);
+               daemon_log("$session_id INFO: create_fai_release_db: start",5);
                my $mesg= $ldap_handle->search(
                        base   => $ldap_base,
                        scope  => 'sub',
@@ -1674,7 +1724,7 @@ sub create_fai_release_db {
                        my @sql_list;
                        my $timestamp= &get_time();
                        foreach my $ou (@{$mesg->{entries}}) {
-                               my $tmp_classes= resolve_fai_classes($ou->dn, $ldap_handle);
+                               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) {
@@ -1694,33 +1744,20 @@ sub create_fai_release_db {
                                        }
                                }
                        }
-                       daemon_log("DEBUG: Inserting ".scalar @sql_list." entries to DB",6);
+
+                       daemon_log("$session_id DEBUG: Inserting ".scalar @sql_list." entries to DB",8);
                        if(@sql_list) {
-                               unshift @sql_list, "DELETE FROM $table_name";
-                               $fai_server_db->exec_statementlist(\@sql_list);
+                               unshift @sql_list, "DELETE FROM $table_name";   # at first, clear db
+                               $fai_release_db->exec_statementlist(\@sql_list);
                        }
-                       daemon_log("DEBUG: Done with inserting",6);
+                       daemon_log("$session_id DEBUG: Done with inserting",7);
                }
-               daemon_log("INFO: create_fai_release_db: finished",5);
+               daemon_log("$session_id INFO: create_fai_release_db: finished",5);
        }
     $ldap_handle->disconnect;
        return $result;
 }
 
-
-sub run_create_fai_release_db {
-    my ($session, $heap, $table_name) = @_[SESSION, HEAP, ARG0];
-    my $task = POE::Wheel::Run->new(
-            Program => sub { &create_fai_release_db($table_name) },
-            StdoutEvent  => "session_run_result",
-            StderrEvent  => "session_run_debug",
-            CloseEvent   => "session_run_done",
-            );
-
-    $heap->{task}->{ $task->ID } = $task;
-    return;
-}
-
 sub get_fai_types {
        my $tmp_classes = shift || return undef;
        my @result;
@@ -1755,20 +1792,21 @@ sub get_fai_state {
 }
 
 sub resolve_fai_classes {
-       my ($fai_base, $ldap_handle) = @_;
+       my ($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("DEBUG: Searching for FAI entries in base $fai_base",6);
+       daemon_log("$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 => $fai_filter,
        );
-       daemon_log("DEBUG: Found ".$mesg->count()." FAI entries",6);
+       daemon_log("$session_id DEBUG: Found ".$mesg->count()." FAI entries",7);
 
        if($mesg->{'resultCode'} == 0 &&
                $mesg->count != 0) {
@@ -1959,24 +1997,31 @@ sub session_run_done {
     delete $heap->{task}->{$task_id};
 }
 
+
 sub create_sources_list {
-    my ($ldap_handle) = @_;
+       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, ">$result") or return undef;
-       if(defined($ldap_server_dn) and length($ldap_server_dn) > 0) {
+       open($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    => $ldap_server_dn,
-                               scope   => 'base',
-                               attrs   => 'FAIrepository',
-                               filter  => 'objectClass=FAIrepositoryServer'
-                               );
+                       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)}) {
@@ -1988,123 +2033,160 @@ sub create_sources_list {
                                }
                        }
                }
+       } else {
+               &main::daemon_log("$session_id ERROR: something wrong with ldap_server_dn '$main::ldap_server_dn', abort create_sources_list", 1); 
        }
        close($fh);
 
        return $result;
 }
 
+
+sub run_create_packages_list_db {
+    my ($session, $heap) = @_[SESSION, HEAP];
+       my $session_id = $session->ID;
+
+       my $task = POE::Wheel::Run->new(
+                                       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, $sources_file) = @_ ;
+       my ($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=undef;
+       }
 
+       if (not defined $session_id) { $session_id = 0; }
        if (not defined $ldap_handle) { 
                $ldap_handle= &get_ldap_handle();
 
                if (not defined $ldap_handle) {
-                       daemon_log("0 ERROR: no ldap_handle available to create_packages_list_db", 1);
+                       daemon_log("$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) { 
-        $sources_file = &create_sources_list($ldap_handle);
-    }
+       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;
-    daemon_log("INFO: create_packages_list_db: start", 5); 
+       my $line;
 
-    open(CONFIG, "<$sources_file") or do {
-        daemon_log( "ERROR: create_packages_list_db: Failed to open '$sources_file'", 1);
-        return;
-    };
-    
-    # Read lines
-    while ($line = <CONFIG>){
-        # Unify
-        chop($line);
-        $line =~ s/^\s+//;
-        $line =~ s/^\s+/ /;
+       open(CONFIG, "<$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;
+       };
 
-        # Strip comments
-        $line =~ s/#.*$//g;
+       # Read lines
+       while ($line = <CONFIG>){
+               # Unify
+               chop($line);
+               $line =~ s/^\s+//;
+               $line =~ s/^\s+/ /;
 
-        # Skip empty lines
-        if ($line =~ /^\s*$/){
-            next;
-        }
+               # Strip comments
+               $line =~ s/#.*$//g;
 
-        # 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, $section );
-            }
-        }
-    }
+               # Skip empty lines
+               if ($line =~ /^\s*$/){
+                       next;
+               }
 
-    close (CONFIG);
+               # 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 );
+                       }
+               }
+       }
 
-    daemon_log("INFO: create_packages_list_db: finished", 5); 
-    return;
-}
+       close (CONFIG);
 
-sub run_create_packages_list_db {
-    my ($session, $heap) = @_[SESSION, HEAP];
-    my $task = POE::Wheel::Run->new(
-            Program => sub {&create_packages_list_db},
-            StdoutEvent  => "session_run_result",
-            StderrEvent  => "session_run_debug",
-            CloseEvent   => "session_run_done",
-            );
-    $heap->{task}->{ $task->ID } = $task;
+       find(\&cleanup_and_extract, keys( %repo_dirs ));
+       $packages_list_db->exec_statementlist(\@packages_list_statements);
+       unlink($packages_list_under_construction);
+       daemon_log("$session_id INFO: create_packages_list_db: finished", 5); 
+       return;
 }
 
+
 sub parse_package_info {
-  my ($baseurl, $dist, $section)= @_;
-  my ($package);
-
-  my ($path) = ($baseurl =~ m%://[^/]*(.*)$%);
-  $repo_dirs{ "${repo_path}/pool" } = 1;
-
-  foreach $package ("Packages.gz"){
-    daemon_log("DEBUG: create_packages_list: fetch $baseurl, $dist, $section", 7);
-    get_package( "$baseurl/dists/$dist/$section/binary-$arch/$package", "$outdir/$dist/$section" );
-    parse_package( "$outdir/$dist/$section", $dist, $path );
-  }
-  find(\&cleanup_and_extract, keys( %repo_dirs ) );
+    my ($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)= @_;
-
-  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'");
-      unlink($dest);
-  } else {
-      daemon_log("ERROR: create_packages_list_db: get_packages: fetching '$url' failed!", 1);
-  }
-  return 0;
+    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, $srv_path)= @_;
+    my ($path, $dist, $srv_path, $session_id)= @_;
+    if (not defined $session_id) { $session_id = 0;}
     my ($package, $version, $section, $description);
-    my @sql_list;
     my $PACKAGES;
+    my $timestamp = &get_time();
 
     if(not stat("$path.in")) {
-        daemon_log("ERROR: create_packages_list: parse_package: file '$path.in' is not readable",1);
+        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($PACKAGES)) {
-        daemon_log("ERROR: create_packages_list_db: parse_package: can not open '$path.in'",1); 
+    if(not defined($PACKAGES)) {
+        daemon_log("$session_id ERROR: create_packages_list_db: parse_package: cannot open '$path.in'",1); 
         return;
     }
 
@@ -2116,8 +2198,8 @@ sub parse_package {
 
         # Use empty lines as a trigger
         if ($line =~ /^\s*$/){
-            my $sql = "INSERT INTO packages_list VALUES ('$dist', '$package', '$version', '$section', '', 'none', '0')";
-            push(@sql_list, $sql);
+            my $sql = "INSERT INTO packages_list VALUES ('$dist', '$package', '$version', '$section', '', 'none', '$timestamp')";
+            push(@packages_list_statements, $sql);
             $package = "none";
             $version = "none";
             $section = "none";
@@ -2149,66 +2231,69 @@ sub parse_package {
             next;
         }
 
-       # Trigger for filename
-       if ($line =~ /^Filename:\s/){
-               my ($filename) = ($line =~ /^Filename: (.*)$/);
-               store_fileinfo( $package, $filename, $dist, $srv_path, $version, $repo_path );
-               next;
-       }
+        # Trigger for filename
+        if ($line =~ /^Filename:\s/){
+            my ($filename) = ($line =~ /^Filename: (.*)$/);
+            store_fileinfo( $package, $filename, $dist, $srv_path, $version, $repo_path );
+            next;
+        }
     }
 
     close( $PACKAGES );
     unlink( "$path.in" );
-    
-    $packages_list_db->exec_statementlist(\@sql_list);
+    &main::daemon_log("$session_id DEBUG: unlink '$path.in'", 1); 
 }
 
+
 sub store_fileinfo {
-  my( $package, $file, $dist, $path, $vers, $srvdir) = @_;
+    my( $package, $file, $dist, $path, $vers, $srvdir) = @_;
 
-  my %fileinfo = (
-    'package' => $package,
-    'dist' => $dist,
-    'version' => $vers,
-  );
+    my %fileinfo = (
+        'package' => $package,
+        'dist' => $dist,
+        'version' => $vers,
+    );
 
-  $repo_files{ "${srvdir}/$file" } = \%fileinfo;
+    $repo_files{ "${srvdir}/$file" } = \%fileinfo;
 }
 
+
 sub cleanup_and_extract {
-  my $fileinfo = $repo_files{ $File::Find::name };
+    my $fileinfo = $repo_files{ $File::Find::name };
 
-  if( defined $fileinfo ) {
+    if( defined $fileinfo ) {
 
-    my $dir = "$outdir/$fileinfo->{ 'dist' }/debconf.d";
-    my $sql;
-    my $package = $fileinfo->{ 'package' };
-    my $newver = $fileinfo->{ 'version' };
+        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' '$dir/DEBIAN'" );
+        mkpath($dir);
+        system( "dpkg -e '$File::Find::name' '$dir/DEBIAN'" );
 
-    if( -f "$dir/DEBIAN/templates" ) {
+        if( -f "$dir/DEBIAN/templates" ) {
 
-      daemon_log("DEBUG: Found debconf templates in '$package' - $newver", 5);
+            daemon_log("DEBUG: Found debconf templates in '$package' - $newver", 5);
 
-      my $tmpl= "";
-      {
-         local $/=undef;
-         open FILE, "$dir/DEBIAN/templates";
-         $tmpl = &encode_base64(<FILE>);
-         close FILE;
-      }
-      rmtree("$dir/DEBIAN/templates");
+            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';";
+            $sql= "update $main::packages_list_tn set template = '$tmpl' where package = '$package' and version = '$newver';";
 
-    } else {
-      $sql= "update $main::packages_list_tn set template = '' where package = '$package' and version = '$newver';";
+        } else {
+            $sql= "update $main::packages_list_tn set template = '' where package = '$package' and version = '$newver';";
+        }
+
+        push @packages_list_statements, $sql;
     }
 
-    my $res= $main::packages_list_db->update_dbentry($sql);
-  }
+    return;
 }
 
 
@@ -2284,10 +2369,14 @@ $login_users_db->create_table($login_users_tn, \@login_users_col_names);
 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);
-$fai_server_db->create_table($fai_release_tn, \@fai_release_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);