<?php

/*
  This code is part of FusionDirectory (http://www.fusiondirectory.org/)
  Copyright (C) 2003-2010  Cajus Pollmeier
  Copyright (C) 2011-2015  FusionDirectory

  This program is free software; you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation; either version 2 of the License, or
  (at your option) any later version.

  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with this program; if not, write to the Free Software
  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
*/


class serviceDHCP extends goService
{
  /* attribute list for save action */
  var $attributes     = array("dhcpServiceDN");
  var $objectclasses  = array("dhcpServer");
  var $conflicts      = array("serviceDHCP");
  var $dhcpServiceDN  = "";

  /* Section storage */
  var $dhcpSections     = array();
  var $dhcpObjectCache  = array();

  var $dhcpDNtoID = array();

  var $current_object = "";
  var $types          = array();
  var $serviceDN      = "";

  var $quote_option = array("domain-name");

  var $orig_dn = "";

  var $dhcp_server_list = array("ENTRIES"=> array(),"FOR_LIST"=> array());
  var $take_over_id     = -1;
  var $display_warning  = TRUE;

  var $subnet_expanded = FALSE;

  function __construct (&$config, $dn = NULL, $parent = NULL)
  {
    parent::__construct($config, $dn, $parent);

    $this->serviceDN = "cn=dhcp,".$dn;
    $this->orig_dn = $dn;

    $this->DisplayName = _("DHCP service");

    $this->types= array(  "dhcpLog" => _("Logging"),
            "dhcpService" => _("Global options"),
            "dhcpClass" => _("Class"),
            "dhcpSubClass" => _("Subclass"),
            "dhcpHost" => _("Host"),
            "dhcpGroup" => _("Group"),
            "dhcpPool" => _("Pool"),
            "dhcpSubnet" => _("Subnet"),
            "dhcpFailOverPeer" => _("Failover peer"),
            "dhcpSharedNetwork" => _("Shared network"),
            "dhcpTSigKey" => _("DNS update key"),
            "dhcpDnsZone" => _("DNS update zones"));


    /* Backport: PHP4 compatibility  */
    foreach($this->types as $type => $translation){
      $this->types[strtolower($type)] = $translation;
    }

    /* Load information about available services */
    $this->reload();
    if (!count($this->dhcpSections)) {
      $this->is_account = FALSE;
      $this->dhcp_server_list = $this->get_list_of_dhcp_servers();
    }
  }

  function add_global_node()
  {
    $attrs = array();

    $attrs['dn'] = 'cn=dhcp,'.$this->dn;
    $attrs['cn'] = array('dhcp');

    $attrs['objectClass']     = array('top', 'dhcpService');
    $attrs['dhcpPrimaryDN']   = array($this->dn);
    $attrs['dhcpStatements']  = array("default-lease-time 600",
                                    "max-lease-time 1200",
                                    "authoritative",
                                    "ddns-update-style none");
    $attrs['MODIFIED']        = TRUE;

    $this->dhcpSections['cn=dhcp,'.$this->dn]     = _("Global options");
    $this->dhcpObjectCache['cn=dhcp,'.$this->dn]  = $attrs;
  }

  function execute()
  {
    /* Call parent execute */
    plugin::execute();

    /* Fill templating stuff */
    $smarty= get_smarty();
    $smarty->assign("dns_take_over",FALSE);
    $display= "";


    /*****************/
    /* Handle Take Over Actions
    /*****************/

    /* Give smarty the required informations */
    $smarty->assign("dhcp_server_list", $this->dhcp_server_list['FOR_LIST']);
    $smarty->assign("dhcp_server_list_cnt", count($this->dhcp_server_list['FOR_LIST']));

    /* Take over requested, save id */
    if(isset($_POST['take_over_src']) && isset($_POST['take_over'])){
      $id = $_POST['take_over_src'];
      if(isset($this->dhcp_server_list['ENTRIES'][$id])){
        $this->take_over_id = $id;
      }
    }

    /* Abort take over action */
    if(isset($_POST['cancel_take_over'])){
      $this->dialog =false;
      $this->take_over_id = -1;
      $this->dhcp_server_list = $this->get_list_of_dhcp_servers();
    }

    /* Display informartion about take over that will be started when saving this server
     *  and hide default dhcp output
     */
    if($this->take_over_id != -1){

      $this->dialog = FALSE;
      $id = $this->take_over_id;
      $smarty->assign("dns_take_over",TRUE);
      $warning = sprintf(_("You have requested a migration of the DHCP setup from server '%s' to the current one."),
        $this->dhcp_server_list['ENTRIES'][$id]['cn'][0]);
      $warning.= "&nbsp;"._("The migration will be started when you save this system.");

      if($this->display_warning){
        msg_dialog::display(_("Warning"), $warning, WARNING_DIALOG);
        $this->display_warning = FALSE;
      }

      return $smarty->fetch(get_template_path('serviceDHCP.tpl', TRUE, dirname(__FILE__)));
    }


    /*****************/
    /* List handling
    /*****************/

    /* Section Creation? */
    if (isset($_POST['create_section']) && isset($_POST['section'])){
      $section = $_POST['section'];

      $tmp = new dhcpNewSectionDialog(NULL);
      if (isset($tmp->sectionMap[$section])) {
        $this->dialog = new $section($this, $this->current_object);
        $this->current_object = "";
      } else {
        $this->dialog = FALSE;
      }
    }

    /* Cancel section creation? */
    if (isset($_POST['cancel_section']) || isset($_POST['cancel_dhcp'])){
      $this->dialog= FALSE;
    }

    /* Save changes */
    if (isset($_POST['save_dhcp'])) {
      $this->dialog->save_object();
      $messages = $this->dialog->check();
      if (count($messages)) {
        msg_dialog::displayChecks($messages);
      } else {
        $dn     = $this->dialog->dn;
        $class  = get_class($this->dialog);
        $type   = $this->types[$class];
        if (empty($this->serviceDN)) {
          $indent = substr_count(preg_replace("/".$this->dn."/", '', $dn), ",") -1;
        } else {
          $indent = substr_count(preg_replace("/".$this->serviceDN."/", '', $dn), ",");
        }
        $spaces = "";
        for ($i = 0; $i < $indent; $i++) {
          $spaces .= "&nbsp;&nbsp;&nbsp;&nbsp;";
        }
        $data = $this->dialog->save();
        if ($this->current_object == "") {
          /* New object */
          $this->dhcpObjectCache[$data['dn']] = $data;
        } else {
          if ($dn != $data['dn']) {
            /* Old object, new name */
            unset($this->dhcpSections[$dn]);
            $this->dhcpObjectCache[$dn]         = array();
            $this->dhcpObjectCache[$data['dn']] = $data;

            /* If we renamed a section, we've to rename a couple of objects, too */
            foreach ($this->dhcpObjectCache as $key => $dsc) {
              if (preg_match("/,$dn$/", $key)) {
                $new_dn = preg_replace("/,$dn$/", ",".$data['dn'], $key);
                $dsc['MODIFIED'] = TRUE;
                $this->dhcpObjectCache[$new_dn] = $dsc;
                unset($this->dhcpObjectCache[$key]);
              }
            }
          } else {
            /* Old object, old name */
            $this->dhcpObjectCache[$data['dn']] = $data;
          }
        }
        $this->reload(FALSE);
        $this->dialog = FALSE;
      }
    }

    /* Remove section? */
    if (isset($_POST['delete_dhcp_confirm'])) {
      if ($this->acl_is_removeable()) {
        unset($this->dhcpSections[$this->current_object]);
        unset($this->dhcpObjectCache[$this->current_object]);
        $this->dhcpObjectCache[$this->current_object] = array();
        foreach ($this->dhcpSections as $key => $value) {
          if (preg_match("/".$this->current_object."$/", $key)) {
            unset($this->dhcpSections[$key]);
            unset($this->dhcpObjectCache[$key]);
            $this->dhcpObjectCache[$key] = array();
          }
        }
      } else {
        msg_dialog::display(_("Permission error"), msgPool::permDelete(), ERROR_DIALOG);
      }
      $this->dialog = FALSE;
    }

    /* Look for post entries */
    foreach ($_POST as $name => $value) {

      /* Insert new section? */
      if (preg_match('/^insertDhcp_.*_x$/', $name)) {
        $id = preg_replace('/^insertDhcp_([^_]+)_x$/', '\1', $name);
        $dn = $this->dhcpDNtoID[$id];
        if (isset($this->dhcpObjectCache[$dn])) {
          $this->dialog = new dhcpNewSectionDialog($this->objectType($dn));
          $this->current_object = $dn;
          $this->dialog->acl = $this->acl;
        }
      }

      /* Edit section? */
      if (preg_match('/^editDhcp_.*_x$/', $name)) {
        $id = preg_replace('/^editDhcp_([^_]+)_x$/', '\1', $name);
        $dn = $this->dhcpDNtoID[$id];
        if (isset($this->dhcpObjectCache[$dn])) {
          $section = $this->objectType($dn);
          $this->current_object = $dn;
          $this->dialog = new $section($this, $this->dhcpObjectCache[$dn]);
        }
      }

      /* Remove section? */
      if (preg_match('/^delDhcp_.*_x$/', $name)) {
        $id = preg_replace('/^delDhcp_([^_]+)_x$/', '\1', $name);
        $dn = $this->dhcpDNtoID[$id];
        if (isset($this->dhcpObjectCache[$dn])) {
          $this->current_object = $dn;
          $this->dialog         = 1;
          $smarty->assign("warning", msgPool::deleteInfo(LDAP::fix($dn), _("DHCP section")));
          return($smarty->fetch(get_template_path('remove_dhcp.tpl', TRUE, dirname(__FILE__))));
        }
      }

      /* Fold subnet? */
      if (preg_match('/^foldDhcp_.*_x$/', $name)) {
        $this->subnet_expanded = FALSE;
        $this->reload(FALSE);
      } elseif (preg_match('/^expandDhcp_.*_x$/', $name)) { // Expand a subnet?
        $id = preg_replace('/^expandDhcp_([^_]+)_x$/', '\1', $name);
        $this->subnet_expanded = $this->dhcpDNtoID[$id];
        $this->reload(FALSE);
      }

    }

    if(isset($_GET['act']) && $_GET['act']=="edit" && isset($_GET['id'])){
      $id = $_GET['id'];
      $dn = $this->dhcpDNtoID[$id];
      if (isset($this->dhcpObjectCache[$dn])){
        $section= $this->objectType($dn);
        $this->current_object= $dn;
        $this->dialog= new $section($this,$this->dhcpObjectCache[$dn]);
      }
    }


    /* Do we need to flip is_account state? */
    if (isset($_POST['modify_state'])){
      $this->is_account= !$this->is_account;
    }

    /* Show tab dialog headers */
    if ($this->is_account) {
      if (!count($this->dhcpObjectCache)) {
        $this->add_global_node();
      }
    } else {
      return $display;
    }

    /* Show dialog
     */
    if(isset($this->dialog) && is_object($this->dialog)){
      $this->dialog->save_object();
      $this->dialog->parent = $this;
      return $this->dialog->execute();
    }

    /* Create Listbox with existing Zones
     */
    $DhcpList = new divSelectBox("dhcpSections");
    $DhcpList->SetHeight(400);

    /* Add entries to DhcpList */
    $editImgIns = "<input type='image' src='geticon.php?context=actions&icon=document-new&size=16' name='insertDhcp_%s' title='"._("Insert new DHCP section")."'>".
      "<input type='image' src='geticon.php?context=actions&icon=document-edit&size=16' name='editDhcp_%s' title='"._("Edit DHCP section")."'>".
      "<input type='image' src='geticon.php?context=actions&icon=edit-delete&size=16' name='delDhcp_%s' title='"._("Remove DHCP section")."'>";
    $editImgInsNoDel = "<input type='image' src='geticon.php?context=actions&icon=document-new&size=16' name='insertDhcp_%s' title='"._("Insert new DHCP section")."'>".
      "<input type='image' src='geticon.php?context=actions&icon=document-edit&size=16' name='editDhcp_%s' title='"._("Edit DHCP section")."'>";
    $editImg = "<input type='image' src='geticon.php?context=actions&icon=document-edit&size=16' name='editDhcp_%s' title='"._("Edit DHCP section")."'>".
      "<input type='image' src='geticon.php?context=actions&icon=edit-delete&size=16' name='delDhcp_%s' title='"._("Remove DHCP section")."'>";
    $subnetExpandImg = "<input style='padding:5px 6px 4px;vertical-align:middle;' type='image' src='images/lists/expand.png' name='expandDhcp_%s' title='"._("Expand DHCP subnet")."'/>";
    $subnetExpandedImg = "<input style='padding:6px 5px 6px 4px;vertical-align:middle;' type='image' src='images/down-arrow.png' name='foldDhcp_%s' title='"._("Fold DHCP subnet")."'/>";

    $tmp = new dhcpNewSectionDialog(NULL);
    foreach ($this->dhcpSections as $section => $values) {
      if (empty($this->dhcpObjectCache[$section])) {
        continue;
      }
      // Ensure that we've a valid id for this section.
      if (!in_array($section,$this->dhcpDNtoID)) {
        $this->dhcpDNtoID[] = $section;
      }

      // Get entry ID
      $id = array_search($section, $this->dhcpDNtoID);

      $values = "<a href='?plug=".$_GET['plug']."&act=edit&id=".$id."'>".$values."</a>";

      $objtype = $this->objectType($section);
      $dhcpObject = new $objtype($this,$this->dhcpObjectCache[$section]);
      if (count($tmp->sectionMap[$objtype])) {
        if ($objtype == "dhcpService") {
          if ($section === $this->subnet_expanded) {
            $values = sprintf($subnetExpandedImg,$id).$values;
          } else {
            $values = sprintf($subnetExpandImg,$id).$values;
          }
          $DhcpList->AddEntry(array(
            array("html"    => $values),
            array("string"  => ''),
            array("string"  => ''),
            array("html"    => str_replace("%s", $id, $editImgInsNoDel), "attach" => "style='text-align:right;'")
          ));
        } else {
          if ($objtype == "dhcpSubnet") {
            if ($section === $this->subnet_expanded) {
              $values = sprintf("&nbsp;&nbsp;".$subnetExpandedImg,$id).$values;
            } else {
              $values = sprintf("&nbsp;&nbsp;".$subnetExpandImg,$id).$values;
            }
          }
          $DhcpList->AddEntry(array(
            array("html"    => $values),
            array("html"    => $dhcpObject->options->get('routers')),
            array("string"  => ''),
            array("html"    => str_replace("%s",$id,$editImgIns), "attach" => "style='text-align:right;'")
          ));
        }
      } else {
        $DhcpList->AddEntry(array(
          array("html" => $values),
          array("html" => $dhcpObject->statements->get('fixed-address')),
          array("html" =>  preg_replace('/^[^ ]+ /', '', isset($dhcpObject->dhcpHWAddress)?$dhcpObject->dhcpHWAddress:"")),
          array("html" => str_replace("%s",$id,$editImg), "attach" => "style='text-align:right;'")
        ));
      }
    }

    /* Display tempalte */
    $smarty->assign("DhcpList",$DhcpList->DrawList());
    $display.= $smarty->fetch(get_template_path('serviceDHCP.tpl', TRUE, dirname(__FILE__)));
    return($display);
  }


  function remove_from_parent()
  {
    /* Cancel if there's nothing to do here */
    if (!$this->initially_was_account) {
      return;
    }

    /* Remove subtrees */
    $ldap = $this->config->get_ldap_link();
    foreach ($this->dhcpObjectCache as $dn => $content) {
      if ($this->objectType($dn) == 'dhcpService') {
        $ldap->rmdir_recursive($dn);
        if (!$ldap->success()) {
          msg_dialog::display(_("LDAP error"), msgPool::ldaperror($ldap->get_error(), $dn, LDAP_DEL, get_class()), LDAP_ERROR);
        }
      }
    }

    /* Remove from self */
    $ldap = $this->config->get_ldap_link();

    /* Remove and write to LDAP */
    plugin::remove_from_parent();

    @DEBUG (DEBUG_LDAP, __LINE__, __FUNCTION__, __FILE__, $this->attributes, "Save");
    $ldap->cd($this->dn);
    $this->cleanup();
    $ldap->modify ($this->attrs);

    if (!$ldap->success()) {
      msg_dialog::display(_("LDAP error"), msgPool::ldaperror($ldap->get_error(), $this->dn, LDAP_MOD, get_class()), LDAP_ERROR);
    }

    /* Optionally execute a command after we're done */
    $this->handle_post_events("remove");
  }


  /* Save data to object */
  function save_object()
  {
    plugin::save_object();
  }


  /* Check supplied data */
  function check()
  {
    /* Call common method to give check the hook */
    $message= plugin::check();

    return ($message);
  }


  /* Save to LDAP */
  function save()
  {
    /* Take over handling
     * - Load serviceDHCP class and dhcpObjectCache for the source dhcp setup.
     * - Assign dhcpObjectCache to this configuration.
     * - Save this setup and remove source setup from ldap.
     */
    if($this->take_over_id != -1){
      $id = $this->take_over_id;
      $src = preg_replace("/cn=dhcp,/","",$this->dhcp_server_list['ENTRIES'][$id]['dn']);
      $tmp = new serviceDHCP ($this->config, $src);
      $this->orig_dn = $src;
      $this->dhcpObjectCache =  $tmp->dhcpObjectCache;
    }

    /* Save dhcp setttings */
    $ldap= $this->config->get_ldap_link();
    foreach ($this->dhcpObjectCache as $dn => $data){

      if($this->dn != $this->orig_dn){
        $dn = preg_replace("/".preg_quote($this->orig_dn, '/')."$/i",$this->dn,$dn);
      }

      /* Remove entry? */
      if (count($data) == 0){
        /* Check if exists, then remove... */
        if($ldap->cat($dn)){
          $ldap->rmdir_recursive($dn);
          if (!$ldap->success()){
            msg_dialog::display(_("LDAP error"), msgPool::ldaperror($ldap->get_error(), $dn, LDAP_MOD, get_class()), LDAP_ERROR);
          }
        }
        continue;
      }

      /* Update dhcp option 'server-name' to actual server name */
      if($this->dn != $this->orig_dn){
        $fixed = FALSE;
        foreach(array("dhcpHost","dhcpSubnet","dhcpGroup","dhcpSharedNetwork") as $object){
          if(in_array($object,$data['objectClass']) && isset($data['dhcpOption'])){
            foreach($data['dhcpOption'] as $key => $option){
              if(preg_match("/^server-name /",$option)){
                $data['dhcpOption'][$key] = "server-name ".$this->cn;
                $data['MODIFIED'] = TRUE;
                break;
              }
            }
          }

          /* Skip next loops if entry is updated */
          if($fixed){
            break;
          }
        }
      }

      /* Modify existing entry? */
      if (isset($data['MODIFIED']) || $this->orig_dn != $this->dn){

        if($ldap->cat($dn)){
          $modify= TRUE;
        } else {
          $modify= FALSE;
        }

        /* Build new entry */
        $attrs= array();
        foreach ($data as $attribute => $values){
          if ($attribute == "MODIFIED" || $attribute == "dn"){
            continue;
          }

          if(in_array($attribute,array("dhcpPrimaryDN","dhcpSecondaryDN","dhcpServerDN","dhcpFailOverPeerDN"))){
            foreach($values as $v_key => $value){
              $values[$v_key] = preg_replace("/".preg_quote($this->orig_dn, '/')."$/i",$this->dn,$value);
            }
          }

          if (count($values)){

            if($attribute == "dhcpOption"){
              foreach($values as $key => $value){
                $option_name = trim(preg_replace("/[^ ]*$/","",$value));
                $option_value= trim(preg_replace("/^[^ ]*/","",$value));
                if(in_array($option_name,$this->quote_option)){
                  $values[$key] = $option_name." \"".$option_value."\"";
                }
              }
            }
            if (count($values) == 1){
              $attrs[$attribute]= $values[0];
            } else {
              $attrs[$attribute]= $values;
            }
          } else {
            if ($modify){
              $attrs[$attribute]= array();
            }
          }
        }

        $ldap->cd($dn);
        if ($modify){
          $ldap->modify($attrs);
          if (!$ldap->success()){
            msg_dialog::display(_("LDAP error"), msgPool::ldaperror($ldap->get_error(), $dn, LDAP_MOD, get_class()), LDAP_ERROR);
          }

          /* Optionally execute a command after we're done */
          $this->handle_post_events("modify");
        } else {
          $ldap->add($attrs);
          if (!$ldap->success()){
            msg_dialog::display(_("LDAP error"), msgPool::ldaperror($ldap->get_error(), $dn, LDAP_ADD, get_class()), LDAP_ERROR);
          }

          /* Optionally execute a command after we're done */
          $this->handle_post_events("add");
        }
      }
    }

    $this->dhcpServiceDN= $this->serviceDN;
    if($this->dn != $this->orig_dn){
      $this->dhcpServiceDN= preg_replace("/".preg_quote($this->orig_dn, '/')."$/i",$this->dn,$this->dhcpServiceDN);
    }

    /* Replace 'new' dn */
    if(preg_match("/new$/",$this->dhcpServiceDN)){
      $this->dhcpServiceDN = preg_replace("/new$/",$this->dn,$this->dhcpServiceDN);
    }

    plugin::save();

    /* Save data to LDAP */
    $ldap->cd($this->dn);
    $this->cleanup();
    $ldap->modify ($this->attrs);

    if (!$ldap->success()){
      msg_dialog::display(_("LDAP error"), msgPool::ldaperror($ldap->get_error(), $this->dn, LDAP_MOD, get_class()), LDAP_ERROR);
    }

    /* Optionally execute a command after we're done */
    if ($this->initially_was_account == $this->is_account){
      if ($this->is_modified){
        $this->handle_post_events("modify");
      }
    } else {
      $this->handle_post_events("add");
    }

    /* Take over handling
     * - Remove old dhcp config from source server
     */
    if($this->take_over_id != -1){
      $id = $this->take_over_id;
      $src = $this->dhcp_server_list['ENTRIES'][$id]['dn'];
      $tmp = new serviceDHCP ($this->config, $src);
      $tmp->remove_from_parent();
    }
  }

  /* Subfonction of reload function */
  function reload_readItemFromLDAP(&$ldap, $attrs, &$final, $erase)
  {
    $sattrs = array();
    $dn     = $ldap->getDN();

    if (isset($this->dhcpObjectCache[$dn]) && !$erase) {
      $sattrs = $this->dhcpObjectCache[$dn];
    } else {
      for ($i = 0; $i < $attrs['count']; $i++) {
        $sattrs[$attrs[$i]] = $attrs[$attrs[$i]];
        unset($sattrs[$attrs[$i]]['count']);
      }
      $sattrs['dn'] = $dn;
      foreach ($sattrs as $name => $values) {
        if ($name == "dhcpOption") {
          foreach ($values as $key => $value) {
            $value_name = trim(preg_replace("/[^ ]*$/", "", $value));
            $value_value= trim(preg_replace("/^[^ ]*/", "", $value));
            if (in_array($value_name, $this->quote_option)) {
              $value_value = preg_replace("/^\"/", "", $value_value);
              $value_value = preg_replace("/\"$/", "", $value_value);
              $sattrs[$name][$key] = $value_name." ".$value_value;
            }
          }
        }
      }
      $this->dhcpObjectCache[$dn] = $sattrs;
    }

    if ($dn === $this->subnet_expanded) {
      $ldap_subnet = $this->config->get_ldap_link();
      $ldap_subnet->cd($dn);
      $ldap_subnet->ls("(objectClass=dhcpHost)");
      while ($host_attrs = $ldap_subnet->fetch()) {
        $this->reload_readItemFromLDAP($ldap_subnet, $host_attrs, $final, $erase);
      }
    }
  }

  /* Subfonction of reload function */
  function reload_refreshListFromCache(&$final)
  {
    foreach ($this->dhcpObjectCache as $dn => $sattrs) {
      foreach ($this->types as $key => $val) {
        if (in_array("$key", $sattrs['objectClass'])) {
          $type = $val;
          $type_id = $key;
          break;
        }
      }

      if (($type_id == "dhcpHost") && (preg_replace("/^[^,]+,/","",$dn) != $this->subnet_expanded)) {
        continue;
      }

      $tmp = preg_replace("/".$this->serviceDN."/", "", $dn);
      $indent = substr_count($tmp, ",");
      if ($type_id == "dhcpSubnet") {
        $indent--;
      }
      if ($indent > 0) {
        $spaces = "&nbsp;&nbsp;";
      } else {
        $spaces = "";
      }
      for ($i = 0; $i < $indent; $i++) {
        $spaces.= "&nbsp;&nbsp;&nbsp;&nbsp;";
      }

      /* Prepare for sorting... */
      $sortpart = explode(",", $dn);
      $sortpart = array_reverse($sortpart);
      $tmp = implode(",", $sortpart);
      $final[$dn] = $tmp."!".$spaces.$type." '".$sattrs['cn'][0]."'";
    }
  }

  function reload($erase = TRUE)
  {
    @DEBUG (DEBUG_TRACE, __LINE__, __FUNCTION__, __FILE__, $erase, "reload");
    /* Init LDAP and load list */
    $ldap = $this->config->get_ldap_link();
    $ui   = get_userinfo();
    $me   = $this->dn;
    if (empty($me)) {
      trigger_error('reload launched with empty dn');
    }

    $filter = "(&(objectClass=dhcpService)(|(dhcpPrimaryDN=$me)(dhcpSecondaryDN=$me)(dhcpServerDN=$me)(dhcpFailOverPeerDN=$me)))";

    $list   = get_list($filter, array("server"), $this->config->current['BASE'], array("cn"), GL_SIZELIMIT | GL_SUBSEARCH);
    $final  = array();

    foreach ($list as $value) {
      /* Set header */
      $sortpart = explode(",", $value['dn']);
      $sortpart = array_reverse($sortpart);
      $tmp = implode(",", $sortpart);

      $final[$value['dn']] = $tmp."!"._("Global options");

      /* Read all sub entries to place here */
      $ldap->cd($value['dn']);
      $ldap->search("(|(objectClass=dhcpService)(objectClass=dhcpClass)(objectClass=dhcpSubClass)(objectClass=dhcpGroup)(objectClass=dhcpPool)(objectClass=dhcpSubnet)(objectClass=dhcpSharedNetwork)(objectClass=dhcpTSigKey)(objectClass=dhcpDnsZone)(objectClass=dhcpFailOverPeer))", array());
      $this->serviceDN = $value['dn'];

      while ($attrs = $ldap->fetch()) {
        $this->reload_readItemFromLDAP($ldap, $attrs, $final, $erase);
      }
    }
    $this->reload_refreshListFromCache($final);


    /* Sort it... */
    natsort($final);
    $this->dhcpSections = array();
    foreach ($final as $key => $val) {
      $this->dhcpSections[$key] = preg_replace('/^[^!]+!(.*)$/', '\\1', $val);
    }

    if (empty($final)) {
      $this->add_global_node();
    }

    $this->dhcpDNtoID = array();
    $this->dhcpDNtoID = array_merge(array_keys($this->dhcpSections), array_keys($this->dhcpObjectCache));
    $this->dhcpDNtoID = array_unique($this->dhcpDNtoID);
  }


  function objectType($dn)
  {
    $type = "";
    $types = array_keys($this->types);

    foreach ($this->dhcpObjectCache[$dn]['objectClass'] as $oc) {
      if (in_array($oc, $types)) {
        $type = $oc;
        break;
      }
    }

    /* That should not happen... */
    if ($type == "") {
      msg_dialog::display(_("Error"), _("The DHCP configuration set is unkown. Please contact your system administrator."), ERROR_DIALOG);
    }

    return $type;
  }


  /* Return plugin informations for acl handling */
  static function plInfo()
  {
    return array(
      "plShortName"   => _("DHCP service"),
      "plDescription" => _("DHCP service")." ("._("Services").")",
      "plIcon"        => "plugins/dhcp/images/iconMini.png",
      "plSelfModify"  => FALSE,
      "plPriority"    => 84,
      "plCategory"    => array("server"),

      "plProvidedAcls"=> array(
        "start"         => _("Start service"),  // Remove this to hide the start button at all.
        "stop"          => _("Stop service"),   // Remove this to hide the stop button at all.
        "restart"       => _("Restart service") // Remove this to hide the restart button at all.
      )
    );
  }

  function take_over_service()
  {
  }

  function get_list_of_dhcp_servers()
  {
    $ret = array("ENTRIES"=> array(),"FOR_LIST"=> array());
    $ldap = $this->config->get_ldap_link();
    $ldap->cd($this->config->current['BASE']);
    $ldap->search("(&(objectClass=goServer)(dhcpServiceDN=*))",array("dn","cn","dhcpServiceDN"));
    while($attrs = $ldap->fetch()){

      /* Skip own config */
      if($this->dn != "new" && preg_match("/".preg_quote($this->dn, '/')."$/",$attrs['dn'])){
        continue;
      }

      $ret['ENTRIES'][] = $attrs;
    }
    foreach($ret['ENTRIES'] as $key => $data){
      $ret['FOR_LIST'][$key] = $data['cn'][0];
    }
    return($ret);
  }

  function getListEntry()
  {
    $fields             = goService::getListEntry();
    $fields['Message']  = _("DHCP service");
    return $fields;
  }
}
?>
