<?php

/*
    Copyright (C) 2014-2016 Deciso B.V.
    Copyright (C) 2003-2005 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.
*/

function pptpusercmp($a, $b)
{
    return strcasecmp($a['name'], $b['name']);
}

function pptpd_users_sort()
{
    global $config;

    if (!is_array($config['ppptpd']['user'])) {
            return;
    }

    usort($config['pptpd']['user'], "pptpusercmp");
}

require_once('guiconfig.inc');
require_once('services.inc');
require_once("system.inc");
require_once("plugins.inc");
require_once('plugins.inc.d/vpn.inc');

if (!is_array($config['pptpd']['user'])) {
    $config['pptpd']['user'] = array();
}
$a_secret = &$config['pptpd']['user'];

if ($_SERVER['REQUEST_METHOD'] === 'GET') {
    if (isset($_GET['id']) && !empty($a_secret[$_GET['id']])) {
        $id = $_GET['id'];
    }
    if (isset($id)) {
        $pconfig['username'] = $a_secret[$id]['name'];
        $pconfig['ip'] = $a_secret[$id]['ip'];
    } else {
        $pconfig['username'] = null;
        $pconfig['ip'] = null;
    }
} elseif ($_SERVER['REQUEST_METHOD'] === 'POST') {
    if (isset($_POST['id']) && !empty($a_secret[$_POST['id']])) {
        $id = $_POST['id'];
    }
    unset($input_errors);
    $pconfig = $_POST;

    /* input validation */
    if (isset($id) && ($a_secret[$id])) {
        $reqdfields = explode(" ", "username");
        $reqdfieldsn = array(gettext("Username"));
    } else {
        $reqdfields = explode(" ", "username password");
        $reqdfieldsn = array(gettext("Username"),gettext("Password"));
    }

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

    if (preg_match("/[^a-zA-Z0-9\.\-_]/", $_POST['username'])) {
        $input_errors[] = gettext("The username contains invalid characters.");
    }

    if (preg_match("/^!/", $_POST['password'])) {
        $input_errors[] = gettext("The password cannot start with '!'.");
    }

    if (!preg_match("/^[\x20-\x7E]*$/", $_POST['password'])) {
        $input_errors[] = gettext("The password contains invalid characters.");
    }

    if (($_POST['password']) && ($_POST['password'] != $_POST['password2'])) {
        $input_errors[] = gettext("The passwords do not match.");
    }
    if (($_POST['ip'] && !is_ipaddr($_POST['ip']))) {
        $input_errors[] = gettext("The IP address entered is not valid.");
    }

    if (!$input_errors && !(isset($id) && $a_secret[$id])) {
        /* make sure there are no dupes */
        foreach ($a_secret as $secretent) {
            if ($secretent['name'] == $_POST['username']) {
                $input_errors[] = gettext("Another entry with the same username already exists.");
                break;
            }
        }
    }

    if (!$input_errors) {
        if (isset($id) && $a_secret[$id]) {
            $secretent = $a_secret[$id];
        }

        $secretent['name'] = $_POST['username'];
        $secretent['ip'] = $_POST['ip'];

        if ($_POST['password']) {
            $secretent['password'] = $_POST['password'];
        }

        if (isset($id) && $a_secret[$id]) {
            $a_secret[$id] = $secretent;
        } else {
            $a_secret[] = $secretent;
        }

        pptpd_users_sort();
        write_config();
        vpn_pptpd_configure();

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


$service_hook = 'pptpd';
legacy_html_escape_form_data($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($input_errors);
      } ?>
        <section class="col-xs-12">
          <div class="tab-content content-box col-xs-12">
            <form method="post" name="iform" id="iform">
              <div class="table-responsive">
                <table class="table table-striped">
                  <tr>
                    <td width="22%">
                      <strong><?=gettext("Edit User");?></strong>
                    </td>
                    <td width="78%" align="right">
                      <small><?=gettext("full help"); ?> </small>
                      <i class="fa fa-toggle-off text-danger"  style="cursor: pointer;" id="show_all_help_page"></i>
                    </td>
                  </tr>
                  <tr>
                    <td><i class="fa fa-info-circle text-muted"></i> <?=gettext("Username");?></td>
                    <td>
                      <input name="username" type="text" id="username" value="<?=$pconfig['username'];?>" />
                    </td>
                  </tr>
                  <tr>
                    <td><i class="fa fa-info-circle text-muted"></i> <?=gettext("Password");?></td>
                    <td>
                      <input name="password" type="password" class="form-control pwd" id="password" />
                      <br /><input name="password2" type="password" class="form-control pwd" id="password2" />
                      &nbsp;(<?=gettext("confirmation");?>)
<?php
                      if (isset($id)) :?><br />
                      <?=gettext("If you want to change the users' password, ".
                                  "enter it here twice.");?>
<?php
                      endif; ?>
                    </td>
                  </tr>
                  <tr>
                    <td><a id="help_for_ip" href="#" class="showhelp"><i class="fa fa-info-circle"></i></a> <?=gettext("IP address");?></td>
                    <td>
                      <input name="ip" type="text" class="form-control unknown" id="ip" value="<?=htmlspecialchars($pconfig['ip']);?>" />
                      <div class="hidden" for="help_for_ip">
                        <?=gettext("If you want the user to be assigned a specific IP address, enter it here.");?>
                      </div>
                    </td>
                  </tr>
                  <tr>
                    <td>&nbsp;</td>
                    <td>
                      <input name="Submit" type="submit" class="btn btn-primary" value="<?=gettext("Save");?>" />
<?php
                      if (isset($id)) :?>
                      <input name="id" type="hidden" value="<?=$id;?>" />
<?php
                      endif; ?>
                    </td>
                  </tr>
                </table>
              </div>
            </form>
          </div>
        </section>
      </div>
    </div>
  </section>
<?php include("foot.inc");
