<?php

/*
    Copyright (C) 2014-2015 Deciso B.V.
    Copyright (C) 2010 Erik Fonnesbeck
    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("interfaces.inc");

function clone_inuse($cloneif) {
    global $config;
    $iflist = get_configured_interface_list(false, true);
    foreach ($iflist as $if) {
        if ($config['interfaces'][$if]['if'] == $cloneif) {
            return true;
        }
    }
    return false;
}

if (!isset($config['wireless']) || !is_array($config['wireless'])) {
    $config['wireless'] = array();
}
if (!isset($config['wireless']['clone']) || !is_array($config['wireless']['clone'])) {
    $config['wireless']['clone'] = array();
}
$a_clones = &$config['wireless']['clone'];


if ($_SERVER['REQUEST_METHOD'] === 'GET') {
    if (isset($_GET['id']) && !empty($a_clones[$_GET['id']])) {
        $id = $_GET['id'];
    }
    if (isset($id)) {
        $pconfig['if'] = $a_clones[$id]['if'];
        $pconfig['cloneif'] = $a_clones[$id]['cloneif'];
        $pconfig['mode'] = $a_clones[$id]['mode'];
        $pconfig['descr'] = $a_clones[$id]['descr'];
    }
} elseif ($_SERVER['REQUEST_METHOD'] === 'POST') {
    $input_errors = array();
    $pconfig = $_POST;
    if (isset($_POST['id']) && !empty($a_clones[$pconfig['id']])) {
        $id = $pconfig['id'];
    }
    /* input validation */
    $reqdfields = explode(" ", "if mode");
    $reqdfieldsn = array(gettext("Parent interface"),gettext("Mode"));

    do_input_validation($_POST, $reqdfields, $reqdfieldsn, $input_errors);

    if (count($input_errors) == 0) {
        $clone = array();
        $clone['if'] = $pconfig['if'];
        $clone['mode'] = $pconfig['mode'];
        $clone['descr'] = $pconfig['descr'];

        if (isset($id) && $clone['if'] == $a_clones[$id]['if']) {
            $clone['cloneif'] = $a_clones[$id]['cloneif'];
        }
        if (empty($clone['cloneif'])) {
            $clone_id = 1;
            do {
                $clone_exists = false;
                $clone['cloneif'] = "{$pconfig['if']}_wlan{$clone_id}";
                foreach ($a_clones as $existing) {
                    if ($clone['cloneif'] == $existing['cloneif']) {
                        $clone_exists = true;
                        $clone_id++;
                        break;
                    }
                }
            } while ($clone_exists);
        }

        if (isset($id) && clone_inuse($a_clones[$id]['cloneif'])) {
            if ($clone['if'] != $a_clones[$id]['if']) {
                $input_errors[] = gettext("This wireless clone cannot be modified because it is still assigned as an interface.");
            } elseif ($clone['mode'] != $a_clones[$id]['mode']) {
                $input_errors[] = gettext("Use the configuration page for the assigned interface to change the mode.");
            }
        }
        if (count($input_errors) == 0) {
            if (!interface_wireless_clone($clone['cloneif'], $clone)) {
                $input_errors[] = sprintf(gettext('Error creating interface with mode %s. The %s interface may not support creating more clones with the selected mode.'), $wlan_modes[$clone['mode']], $clone['if']);
            } else {
                if (isset($id)) {
                    if ($clone['if'] != $a_clones[$id]['if']) {
                        mwexec("/sbin/ifconfig " . escapeshellarg($a_clones[$id]['cloneif']) . " destroy");
                    }
                    $a_clones[$id] = $clone;
                } else {
                    $a_clones[] = $clone;
                }

                usort($a_clones, function($a, $b) {
                    return strnatcmp($a['cloneif'], $b['cloneif']);
                });
                write_config();

                header("Location: interfaces_wireless.php");
                exit;
            }
        }
    }
}

legacy_html_escape_form_data($pconfig);
include("head.inc");
?>

<body>
<?php include("fbegin.inc"); ?>

<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 tab-content">
          <form method="post" name="iform" id="iform">
            <table class="table table-striped">
              <thead>
                <tr>
                  <td width="22%"><strong><?=gettext("Wireless clone configuration");?></strong></td>
                  <td width="78%" 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>
                    &nbsp;
                  </td>
                </tr>
              </thead>
              <tbody>
                <tr>
                  <td><i class="fa fa-info-circle text-muted"></i> <?=gettext("Parent interface");?></td>
                  <td>
                    <select name="if" class="selectpicker">
<?php
                    foreach (get_interface_list() as $ifn => $ifinfo):
                        if (match_wireless_interface($ifn)):
                          if (strstr($ifn, '_wlan')) {
                              continue;
                          }?>
                      <option value="<?=$ifn;?>" <?=$ifn == $pconfig['if'] ? "selected=\"selected\"" : "";?>>
                          <?=htmlspecialchars($ifn . " (" . $ifinfo['mac'] . ")");?>
                      </option>
<?php
                      endif;
                    endforeach;?>
                    </select>
                  </td>
                </tr>
                <tr>
                  <td><a id="help_for_descr" href="#" class="showhelp"><i class="fa fa-info-circle"></i></a> <?=gettext("Description");?></td>
                  <td>
                    <input name="descr" type="text" value="<?=$pconfig['descr'];?>" />
                    <div class="hidden" for="help_for_descr">
                      <?=gettext("You may enter a description here for your reference (not parsed).");?>
                    </div>
                  </div>
                </tr>
                <tr>
                  <td></td>
                  <td>
                    <input type="hidden" name="mode" value="<?=isset($pconfig['mode']) ? $pconfig['mode'] : 'bss' ?>" />
                    <input type="hidden" name="cloneif" value="<?=$pconfig['cloneif']; ?>" />
                    <input 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='<?=(isset($_SERVER['HTTP_REFERER']) ? $_SERVER['HTTP_REFERER'] : '/interfaces_wireless.php');?>'" />
                    <?php if (isset($id)): ?>
                    <input name="id" type="hidden" value="<?=$id;?>" />
                    <?php endif; ?>
                  </td>
                </tr>
              </tbody>
            </table>
          </form>
        </div>
      </section>
    </div>
  </div>
</section>
<?php include("foot.inc"); ?>
