<?php

/*
    Copyright (C) 2014 Deciso B.V.
    Copyright (C) 2004 Scott Ullrich
    Copyright (C) 2009 Ermal Luçi
    Copyright (C) 2010 Jim Pingle
    Copyright (C) 2003-2004 Manuel Kasper <mk@neon1.net>.
    All rights reserved.

    Redistribution and use in source and binary forms, with or without
    modification, are permitted provided that the following conditions are met:

    1. Redistributions of source code must retain the above copyright notice,
       this list of conditions and the following disclaimer.

    2. Redistributions in binary form must reproduce the above copyright
       notice, this list of conditions and the following disclaimer in the
       documentation and/or other materials provided with the distribution.

    THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
    INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
    AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
    AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
    OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
    SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
    INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
    CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
    ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
    POSSIBILITY OF SUCH DAMAGE.
*/

require_once("guiconfig.inc");
require_once("pfsense-utils.inc");

if (!isset($config['aliases']) || !is_array($config['aliases'])) {
    $config['aliases'] = array();
}
if (!isset($config['aliases']['alias'])) {
    $config['aliases']['alias'] = array();
}
$a_aliases = &$config['aliases']['alias'];

$pconfig = array();
if ($_SERVER['REQUEST_METHOD'] === 'GET') {
    if (isset($_GET['id']) && is_numericint($_GET['id']) && isset($a_aliases[$_GET['id']])) {
        $id = $_GET['id'];
        foreach (array("name","detail","address","type","descr","updatefreq","aliasurl","url") as $fieldname) {
            if (isset($a_aliases[$id][$fieldname])) {
                $pconfig[$fieldname] = $a_aliases[$id][$fieldname];
            } else {
                $pconfig[$fieldname] = null;
            }
        }
        // convert to array if only one is provided
        if (!empty($pconfig['aliasurl']) && !is_array($pconfig['aliasurl'])) {
            $pconfig['aliasurl'] = array($pconfig['aliasurl']);
        }
    } elseif (isset($_GET['name'])) {
        // search alias by name
        foreach ($a_aliases as $alias_id => $alias_data) {
            if (strtolower($alias_data['name']) == strtolower(trim($_GET['name']))) {
                $id = $alias_id;
                break;
            }
        }
        // initialize form fields, when not found present empty form
        foreach (array("name","detail","address","type","descr","updatefreq","aliasurl","url") as $fieldname) {
            if (isset($id) && isset($a_aliases[$id][$fieldname])) {
                $pconfig[$fieldname] = $a_aliases[$id][$fieldname];
            } else {
                $pconfig[$fieldname] = null;
            }
        }
    } else {
        // init empty
        $init_fields = array("name","detail","address","type","descr","updatefreq","url");
        foreach ($init_fields as $fieldname) {
            $pconfig[$fieldname] = null;
        }
    }
} elseif ($_SERVER['REQUEST_METHOD'] === 'POST') {
    $pconfig = $_POST;
    if (isset($_POST['id']) && is_numericint($_POST['id']) && isset($a_aliases[$_POST['id']])) {
        $id = $_POST['id'];
    }

    // fix form type conversions ( list to string, as saved in config )
    // -- fill in default row description and make sure separators are removed
    if (strpos($pconfig['type'],'urltable') !== false) {
        $pconfig['url'] = $pconfig['host_url'][0];
    } elseif (strpos($pconfig['type'],'url') !== false) {
        $pconfig['aliasurl'] = $pconfig['host_url'];
    } else {
        $pconfig['address'] = implode(' ',$pconfig['host_url']);
    }

    foreach ($pconfig['detail'] as &$detailDescr) {
        if (empty($detailDescr)) {
            $detailDescr = sprintf(gettext("Entry added %s"), date('r'));
        } else {
            // trim and strip pipes
            $detailDescr = trim(str_replace('|',' ' , $detailDescr));
        }
    }
    $pconfig['detail'] = implode('||', $pconfig['detail']);

    if (isset($pconfig['submit'])) {
        $input_errors = array();
        // validate data
        foreach ($pconfig['host_url'] as $detail_entry) {
            if ($pconfig['type'] == 'host') {
                if (!is_domain($detail_entry) && !is_ipaddr($detail_entry)) {
                    $input_errors[] = sprintf(gettext("%s doesn't appear to be a valid hostname or ip address"), $detail_entry) ;
                }
            } elseif ($pconfig['type'] == 'port') {
                if (!is_port($detail_entry)) {
                    $input_errors[] = sprintf(gettext("%s doesn't appear to be a valid port number"), $detail_entry) ;
                }
            }

        }

        /* Check for reserved keyword names */
        // Keywords not allowed in names
        $reserved_keywords = array("all", "pass", "block", "out", "queue", "max", "min", "pptp", "pppoe", "L2TP", "OpenVPN", "IPsec");

        // Add all Load balance names to reserved_keywords
        if (is_array($config['load_balancer']['lbpool']))
            foreach ($config['load_balancer']['lbpool'] as $lbpool)
                $reserved_keywords[] = $lbpool['name'];

        $reserved_ifs = get_configured_interface_list(false, true);
        $reserved_keywords = array_merge($reserved_keywords, $reserved_ifs, $reserved_table_names);
        foreach ($reserved_keywords as $rk)
            if ($rk == $pconfig['name'])
                $input_errors[] = sprintf(gettext("Cannot use a reserved keyword as alias name %s"), $rk);

        /* check for name interface description conflicts */
        foreach ($config['interfaces'] as $interface) {
            if ($interface['descr'] == $pconfig['name']) {
                $input_errors[] = gettext("An interface description with this name already exists.");
                break;
            }
        }
        if (is_validaliasname($pconfig['name']) !== true) {
            $input_errors[] = gettext("The alias name must be less than 32 characters long and may only consist of the characters") . " a-z, A-Z, 0-9, _.";
        }

        if (!empty($pconfig['updatefreq']) && !is_numericint($pconfig['updatefreq'])) {
            $input_errors[] = gettext("Update Frequency should be a number");
        }

        /* check for name conflicts */
        if (empty($a_aliases[$id])) {
            foreach ($a_aliases as $alias) {
                if ($alias['name'] == $_POST['name']) {
                    $input_errors[] = gettext("An alias with this name already exists.");
                    break;
                }
            }
        }

        /* user may not change type */
        if (isset($id) && $pconfig['type'] != $a_aliases[$id]['type']) {
            $input_errors[] = gettext("Alias type may not be changed for an existing alias.");
        }

        if ($pconfig['type'] == 'urltable') {
            if (empty($pconfig['url']) || !is_URL($pconfig['url'])) {
                $input_errors[] = gettext("You must provide a valid URL.");
            }
        }

        if (count($input_errors) == 0) {
            // save to config
            $copy_fields = array("name","detail","address","type","descr","updatefreq","aliasurl","url");
            $confItem = array();
            foreach ($copy_fields as $fieldname) {
                if (!empty($pconfig[$fieldname])) {
                    $confItem[$fieldname] = $pconfig[$fieldname];
                }
            }

            /*   Check to see if alias name needs to be
             *   renamed on referenced rules and such
             */
            if (isset($id) && $pconfig['name'] <> $pconfig['origname']) {
                // Firewall rules
                $origname = $pconfig['origname'];
                update_alias_names_upon_change(array('filter', 'rule'), array('source', 'address'), $pconfig['name'], $origname);
                update_alias_names_upon_change(array('filter', 'rule'), array('destination', 'address'), $pconfig['name'], $origname);
                update_alias_names_upon_change(array('filter', 'rule'), array('source', 'port'), $pconfig['name'], $origname);
                update_alias_names_upon_change(array('filter', 'rule'), array('destination', 'port'), $pconfig['name'], $origname);
                // NAT Rules
                update_alias_names_upon_change(array('nat', 'rule'), array('source', 'address'), $pconfig['name'], $origname);
                update_alias_names_upon_change(array('nat', 'rule'), array('source', 'port'), $pconfig['name'], $origname);
                update_alias_names_upon_change(array('nat', 'rule'), array('destination', 'address'), $pconfig['name'], $origname);
                update_alias_names_upon_change(array('nat', 'rule'), array('destination', 'port'), $pconfig['name'], $origname);
                update_alias_names_upon_change(array('nat', 'rule'), array('target'), $pconfig['name'], $origname);
                update_alias_names_upon_change(array('nat', 'rule'), array('local-port'), $pconfig['name'], $origname);
                // NAT 1:1 Rules
                update_alias_names_upon_change(array('nat', 'onetoone'), array('destination', 'address'), $pconfig['name'], $origname);
                // NAT Outbound Rules
                update_alias_names_upon_change(array('nat', 'advancedoutbound', 'rule'), array('source', 'network'), $pconfig['name'], $origname);
                update_alias_names_upon_change(array('nat', 'advancedoutbound', 'rule'), array('sourceport'), $pconfig['name'], $origname);
                update_alias_names_upon_change(array('nat', 'advancedoutbound', 'rule'), array('destination', 'address'), $pconfig['name'], $origname);
                update_alias_names_upon_change(array('nat', 'advancedoutbound', 'rule'), array('dstport'), $pconfig['name'], $origname);
                update_alias_names_upon_change(array('nat', 'advancedoutbound', 'rule'), array('target'), $pconfig['name'], $origname);
                // Alias in an alias
                update_alias_names_upon_change(array('aliases', 'alias'), array('address'), $pconfig['name'], $origname);
            }


            // save to config
            if (isset($id)) {
                $a_aliases[$id] = $confItem;
            } else {
                $a_aliases[] = $confItem;
            }
            // Sort list
            $a_aliases = msort($a_aliases, "name");

            if (write_config()) {
              // post save actions
              mark_subsystem_dirty('aliases');
              if (strpos($pconfig['type'],'url') !== false) {
                  // update URL Table Aliases
                  configd_run('filter refresh_url_alias', true);
              }
            }

            if($pconfig['type'] == 'host') {
                header("Location: firewall_aliases.php?tab=ip");
            } elseif (strpos($pconfig['type'],'url') !== false) {
                header("Location: firewall_aliases.php?tab=url");
            } else {
                header("Location: firewall_aliases.php?tab=".$pconfig['type']);
            }
            exit;

        }
    }
}

$referer = (isset($_SERVER['HTTP_REFERER']) ? html_safe($_SERVER['HTTP_REFERER']) : '/firewall_aliases.php');

legacy_html_escape_form_data($pconfig);

include("head.inc");

?>
<body>
<?php
  include("fbegin.inc");
?>
<script type="text/javascript">
  $( document ).ready(function() {
    /**
     * remove host/port row or clear values on last entry
     */
    function removeRow() {
        if ( $('#detailTable > tbody > tr').length == 1 ) {
            $('#detailTable > tbody > tr:last > td > input').each(function(){
              $(this).val("");
            });
        } else {
            $(this).parent().parent().remove();
        }
    }
    // add new detail record
    $("#addNew").click(function(){
        // copy last row and reset values
        $('#detailTable > tbody').append('<tr>'+$('#detailTable > tbody > tr:last').html()+'</tr>');
        $('#detailTable > tbody > tr:last > td > input').each(function(){
          $(this).val("");
        });
        $(".act-removerow").click(removeRow);
        // link typeahead to new item
        $(".fld_detail").typeahead({ source: document.all_aliases[$("#typeSelect").val()] });
    });

    $(".act-removerow").click(removeRow);

    function toggleType() {
      if ($("#typeSelect").val() == 'urltable' || $("#typeSelect").val() == 'urltable_ports'  ) {
        $("#updatefreq").removeClass('hidden');
        $("#updatefreqHeader").removeClass('hidden');
        $("#addNew").addClass('hidden');
        $('#detailTable > tbody > tr:gt(0)').remove();
        $('.act-removerow').addClass('hidden');
      } else {
        $("#updatefreq").addClass('hidden');
        $("#updatefreqHeader").addClass('hidden');
        $("#addNew").removeClass('hidden');
        $('.act-removerow').removeClass('hidden');
      }
      switch($("#typeSelect").val()) {
          case 'urltable':
              $("#detailsHeading1").html("<?=gettext("URL");?>");
              break;
          case 'urltable_ports':
              $("#detailsHeading1").html("<?=gettext("URL");?>");
              break;
          case 'url':
              $("#detailsHeading1").html("<?=gettext("URL");?>");
              break;
          case 'url_ports':
              $("#detailsHeading1").html("<?=gettext("URL");?>");
              break;
          case 'host':
              $("#detailsHeading1").html("<?=gettext("Host(s)");?>");
              break;
          case 'network':
              $("#detailsHeading1").html("<?=gettext("Network(s)");?>");
              break;
          case 'port':
              $("#detailsHeading1").html("<?=gettext("Port(s)");?>");
              break;
      }
      $(".fld_detail").typeahead("destroy");
      $(".fld_detail").typeahead({ source: document.all_aliases[$("#typeSelect").val()] });
    }

    $("#typeSelect").change(function(){
      toggleType();
    });

    // collect all known aliases per type
    document.all_aliases = {};
    $("#aliases > option").each(function(){
        if (document.all_aliases[$(this).data('type')] == undefined) {
            document.all_aliases[$(this).data('type')] = [];
        }
        document.all_aliases[$(this).data('type')].push($(this).val())
    });

    toggleType();
  });
</script>
<!-- push all available (nestable) aliases in a hidden select box -->
<select class="hidden" id="aliases">
<?php
    if (!empty($config['aliases']['alias'])):
      foreach ($config['aliases']['alias'] as $alias):
        if ($alias['type'] == 'network' || $alias['type'] == 'host' || $alias['type'] == 'port'):?>
        <option data-type="<?=$alias['type'];?>" value="<?=$alias['name'];?>"></option>
<?php
        endif;
      endforeach;
    endif;
?>
</select>

  <section class="page-content-main">
    <div class="container-fluid">
      <div class="row">
<?php  if (isset($input_errors) && count($input_errors) > 0) print_input_errors($input_errors); ?>
        <section class="col-xs-12">
          <div class="content-box">
            <header class="content-box-head container-fluid">
              <h3><?=gettext("Alias Edit");?></h3>
            </header>
            <div class="content-box-main">
              <form action="firewall_aliases_edit.php" method="post" name="iform" id="iform">
                <div class="table-responsive">
                  <table class="table table-striped">
                    <tr>
                      <td colspan="2" align="right">
                        <small><?=gettext("full help"); ?> </small>
                        <i class="fa fa-toggle-off text-danger"  style="cursor: pointer;" id="show_all_help_page" type="button"></i>
                      </td>
                    </tr>
                    <tr>
                      <td width="22%"><a id="help_for_name" href="#" class="showhelp"><i class="fa fa-info-circle"></i></a> <?=gettext("Name"); ?></td>
                      <td width="78%">
                        <input name="origname" type="hidden" id="origname" class="form-control unknown" size="40" value="<?=$pconfig['name'];?>" />
                        <?php if (isset($id)): ?>
                          <input name="id" type="hidden" value="<?=$id;?>" />
                        <?php endif; ?>
                        <input name="name" type="text" id="name" class="form-control unknown" size="40" maxlength="31" value="<?=$pconfig['name'];?>" />
                        <div class="hidden" for="help_for_name">
                          <?=gettext("The name of the alias may only consist of the characters \"a-z, A-Z, 0-9 and _\"."); ?>
                        </div>
                      </td>
                    </tr>
                    <tr>
                      <td><a id="help_for_description" href="#" class="showhelp"><i class="fa fa-info-circle"></i></a> <?=gettext("Description"); ?></td>
                      <td>
                        <input name="descr" type="text" class="form-control unknown" id="descr" size="40" value="<?=$pconfig['descr'];?>" />
                        <div class="hidden" for="help_for_description">
                          <?=gettext("You may enter a description here for your reference (not parsed)."); ?>
                        </div>
                      </td>
                    </tr>
                    <tr>
                      <td><a id="help_for_type" href="#" class="showhelp"><i class="fa fa-info-circle"></i></a> <?=gettext("Type"); ?></td>
                      <td>
                        <select  name="type" class="form-control" id="typeSelect">
                          <option value="host" <?=$pconfig['type'] == "host" ? "selected=\"selected\"" : ""; ?>><?=gettext("Host(s)"); ?></option>
                          <option value="network" <?=$pconfig['type'] == "network" ? "selected=\"selected\"" : ""; ?>><?=gettext("Network(s)"); ?></option>
                          <option value="port" <?=$pconfig['type'] == "port" ? "selected=\"selected\"" : ""; ?>><?=gettext("Port(s)"); ?></option>
                          <option value="url" <?=$pconfig['type'] == "url" ? "selected=\"selected\"" : ""; ?>><?=gettext("URL (IPs)");?></option>
                          <option value="url_ports" <?=$pconfig['type'] == "url_ports" ? "selected=\"selected\"" : ""; ?>><?=gettext("URL (Ports)");?></option>
                          <option value="urltable" <?=$pconfig['type'] == "urltable" ? "selected=\"selected\"" : ""; ?>><?=gettext("URL Table (IPs)"); ?></option>
                          <option value="urltable_ports" <?=$pconfig['type'] == "urltable_ports" ? "selected=\"selected\"" : ""; ?>><?=gettext("URL Table (Ports)"); ?></option>
                        </select>
                        <div class="hidden" for="help_for_type">
                          <span class="text-info">
                            <?=gettext("Networks")?><br/>
                          </span>
                          <small>
                            <?=gettext("Networks are specified in CIDR format.  Select the CIDR mask that pertains to each entry. /32 specifies a single IPv4 host, /128 specifies a single IPv6 host, /24 specifies 255.255.255.0, /64 specifies a normal IPv6 network, etc. Hostnames (FQDNs) may also be specified, using a /32 mask for IPv4 or /128 for IPv6.");?>
                            <br/>
                          </small>
                          <span class="text-info">
                            <?=gettext("Hosts")?><br/>
                          </span>
                          <small>
                            <?=gettext("Enter as many hosts as you would like. Hosts must be specified by their IP address or fully qualified domain name (FQDN). FQDN hostnames are periodically re-resolved and updated. If multiple IPs are returned by a DNS query, all are used.");?>
                            <br/>
                          </small>
                          <span class="text-info">
                            <?=gettext("Ports")?><br/>
                          </span>
                          <small>
                            <?=gettext("Enter as many ports as you wish. Port ranges can be expressed by separating with a colon.");?>
                            <br/>
                          </small>
                          <span class="text-info">
                            <?=gettext("URL's")?><br/>
                          </span>
                          <small>
                            <?=gettext("Enter a URL containing a large number of IPs,ports and/or Subnets. After saving the lists will be downloaded and scheduled for automatic updates when a frequency is provided.");?>
                          </small>
                        </div>
                      </td>
                    </tr>
                    <tr>
                      <td><div id="addressnetworkport"><a id="help_for_hosts" href="#" class="showhelp"><i class="fa fa-info-circle text-muted"></i></a> <?=gettext("Host(s)"); ?></div></td>
                      <td>
                        <table class="table table-striped table-condensed" id="detailTable">
                          <thead>
                            <tr>
                              <th></th>
                              <th id="detailsHeading1"><?=gettext("Network"); ?></th>
                              <th id="detailsHeading3"><?=gettext("Description"); ?></th>
                              <th id="updatefreqHeader" ><?=gettext("Update Freq. (days)");?></th>
                            </tr>
                          </thead>
                          <tbody>
<?php                      if (is_array($pconfig['aliasurl'])):
                            $detail_desc = explode("||", $pconfig['detail']);
                            foreach ($pconfig['aliasurl'] as $aliasid => $aliasurl):
?>
                              <tr>
                                <td>
                                  <div style="cursor:pointer;" class="act-removerow btn btn-default btn-xs" alt="remove"><span class="glyphicon glyphicon-minus"></span></div>
                                </td>
                                <td>
                                  <input type="text" class="form-control" name="host_url[]" value="<?=$aliasurl;?>"/>
                                </td>
                                <td>
                                  <input type="text" class="form-control" name="detail[]" value="<?= isset($detail_desc[$aliasid])?$detail_desc[$aliasid]:"";?>">
                                </td>
                                <td>
<?php                          if ($aliasid ==0):
?>
                                  <input type="text" class="form-control input-sm" id="updatefreq"  name="updatefreq" value="<?=$pconfig['updatefreq'];?>" >
<?php                          endif;
?>
                                </td>
                              </tr>
<?php                        endforeach;
                          else:
                            $detail_desc = explode("||", $pconfig['detail']);
                            if (empty($pconfig['address']) && isset($pconfig['url'])) {
                              $addresslst = array($pconfig['url']);
                            } else {
                              $addresslst = explode(' ', $pconfig['address']);
                            }
                            foreach ($addresslst as $addressid => $address):
?>
                              <tr>
                                <td>
                                  <div style="cursor:pointer;" class="act-removerow btn btn-default btn-xs" alt="remove"><span class="glyphicon glyphicon-minus"></span></div>
                                </td>
                                <td>
                                  <input type="text" class="fld_detail"  name="host_url[]" value="<?=$address;?>"/>
                                </td>
                                <td>
                                  <input type="text" name="detail[]" value="<?= isset($detail_desc[$addressid])?$detail_desc[$addressid]:"";?>"/>
                                </td>
                                <td>
<?php                          if ($addressid ==0):
?>
                                  <input type="text" class="input-sm" id="updatefreq" name="updatefreq" value="<?=$pconfig['updatefreq'];?>"/>
<?php                          endif;
?>
                                </td>
                              </tr>

<?php                      endforeach;
                          endif;
?>
                            </tbody>
                            <tfoot>
                              <tr>
                                <td colspan="4">
                                  <div id="addNew" style="cursor:pointer;" class="btn btn-default btn-xs" alt="add"><span class="glyphicon glyphicon-plus"></span></div>
                                </td>
                              </tr>
                            </tfoot>
                          </table>
                        </td>
                      </tr>
                      <tr>
                        <td>&nbsp;</td>
                        <td>
                          <input id="submit" name="submit" type="submit" class="btn btn-primary" value="<?=gettext("Save"); ?>" />
                          <input type="button" class="btn btn-default" value="<?=gettext("Cancel");?>" onclick="window.location.href='<?=$referer;?>'" />
                        </td>
                      </tr>
                  </table>
                </div>
              </form>
            </div>
          </div>
        </section>
      </div>
    </div>
  </section>
<?php include("foot.inc"); ?>