<?php

/*

 * Enano - an open-source CMS capable of wiki functions, Drupal-like sidebar blocks, and everything in between

 *

 * This program is Free Software; you can redistribute 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 details.

 */

function page_Admin_Home()

{

  global $db, $session, $paths, $template, $plugins; // Common objects

  global $lang;

  if ( $session->auth_level < USER_LEVEL_ADMIN || $session->user_level < USER_LEVEL_ADMIN )

  {

    $login_link = makeUrlNS('Special', 'Login/' . $paths->nslist['Special'] . 'Administration', 'level=' . USER_LEVEL_ADMIN, true);

    echo '<h3>' . $lang->get('adm_err_not_auth_title') . '</h3>';

    echo '<p>' . $lang->get('adm_err_not_auth_body', array( 'login_link' => $login_link )) . '</p>';

    return;

  }

  if ( $paths->getParam(0) == 'updates.xml' )

  {

    return acphome_process_updates();

  }

  // Welcome

  echo '<h2>' . $lang->get('acphome_heading_main') . '</h2>';

  echo '<p>' . $lang->get('acphome_welcome_line1') . '</p>';

  // Stats

  acphome_show_stats();

  //

  // Alerts

  //

  echo '<h3>' . $lang->get('acphome_heading_alerts') . '</h3>';

  // Demo mode

  if ( defined('ENANO_DEMO_MODE') )

  {

    echo '<div class="acphome-box info">';

      echo '<h3>' . $lang->get('acphome_msg_demo_title') . '</h3>

            <p>' . $lang->get('acphome_msg_demo_body', array('reset_url' => makeUrlNS('Special', 'DemoReset', false, true))) . '</p>';

    echo '</div>';

  }

  // Check for the installer scripts

  if( file_exists(ENANO_ROOT.'/install/install.php') && !defined('ENANO_DEMO_MODE') )

  {

    echo '<div class="acphome-box warning">

            <h3>' . $lang->get('acphome_msg_install_files_title') . '</h3>

            <p>' . $lang->get('acphome_msg_install_files_body') . '</p>

          </div>';

  }

  // Inactive users

  $q = $db->sql_query('SELECT time_id FROM '.table_prefix.'logs WHERE log_type=\'admin\' AND action=\'activ_req\';');

  if ( $q )

  {

    if ( $db->numrows() > 0 )

    {

      $n = $db->numrows();

      $um_flags = 'href="#" onclick="ajaxPage(\''.$paths->nslist['Admin'].'UserManager\'); return false;"';

      if ( $n == 1 )

        $s = $lang->get('acphome_msg_inactive_users_one', array('um_flags' => $um_flags));

      else

        $s = $lang->get('acphome_msg_inactive_users_plural', array('um_flags' => $um_flags));

      echo '<div class="acphome-box notice">

              <h3>' . $lang->get('acphome_heading_inactive_users') . '</h3>

              ' . $s . '

            </div>';

    }

  }

  $db->free_result();

  // Update checker

  echo '<div class="acphome-box info">';

    echo '<h3>' . $lang->get('acphome_heading_updates') . '</h3>';

    echo '<p>' . $lang->get('acphome_msg_updates_info', array('updates_url' => 'http://ktulu.enanocms.org/meta/updates.xml')) . '</p>';

    echo '<div id="update_check_container"><input type="button" onclick="ajaxUpdateCheck(this.parentNode.id);" value="' . $lang->get('acphome_btn_check_updates') . '" /></div>';

  echo '</div>';

  // Docs

  echo '<div class="acphome-box info halfwidth">';

  echo '<h3>' . $lang->get('acphome_heading_docs') . '</h3>';

  echo '<p>' . $lang->get('acphome_msg_docs_info') . '</p>';

  echo '</div>';

  // Support

  echo '<div class="acphome-box info halfwidth">';

  echo '<h3>' . $lang->get('acphome_heading_support') . '</h3>';

  echo '<p>' . $lang->get('acphome_msg_support_info') . '</p>';

  echo '</div>';

  echo '<span class="menuclear"></span>';

  //

  // Stats

  //

  if(getConfig('log_hits') == '1')

  {

    require_once(ENANO_ROOT . '/includes/stats.php');

    $stats = stats_top_pages(10);

    //die('<pre>'.print_r($stats,true).'</pre>');

    $c = 0;

    $cls = 'row2';

    echo '<h3>' . $lang->get('acphome_heading_top_pages') . '</h3>

          <div class="tblholder">

            <table style="width: 100%;" border="0" cellspacing="1" cellpadding="4">

              <tr>

                <th>' . $lang->get('acphome_th_toppages_page') . '</th>

                <th>' . $lang->get('acphome_th_toppages_hits') . '</th>

              </tr>';

    foreach($stats as $data)

    {

      echo   '<tr>';

      $cls = ( $cls == 'row1' ) ? 'row2' : 'row1';

      echo     '<td class="'.$cls.'">

                  <a href="'.makeUrl($data['page_urlname']).'">'.$data['page_title'].'</a></td><td style="text-align: center;" class="'.$cls.'">'.$data['num_hits']

             . '</td>';

      echo   '</tr>';

    }

    echo '  </table>

          </div>';

  }

  // Any hooks?

  $code = $plugins->setHook('acp_home');

  foreach ( $code as $cmd )

  {

    eval($cmd);

  }

  //

  // Security log

  //

  echo '<h3>' . $lang->get('acphome_heading_seclog') . '</h3>';

  echo '<p>' . $lang->get('acphome_msg_seclog_info') . '</p>';

  $seclog = get_security_log(5);

  echo $seclog;

  echo '<p><a href="#" onclick="ajaxPage(\''.$paths->nslist['Admin'].'SecurityLog\'); return false;">' . $lang->get('acphome_btn_seclog_full') . '</a></p>';

}

function acphome_process_updates()

{

  require_once(ENANO_ROOT . '/includes/http.php');

  try

  {

    $req = new Request_HTTP('ktulu.enanocms.org', '/meta/updates.xml');

    $response = $req->get_response_body();

    header('Content-type: application/xml');

  }

  catch ( Exception $e )

  {

    header('Content-type: application/xml');

    echo '<enano><error><![CDATA[

Cannot connect to server: ' . $e->getMessage() . '

]]></error></enano>';

    return true;

  }

  if ( $req->response_code != HTTP_OK )

  {

    // Error in response

    echo '<enano><error><![CDATA[

Did not properly receive response from server. Response code: ' . $req->response_code . ' ' . $req->response_string . '

]]></error></enano>';

  }

  else

  {

    // Retrieve first update

    $first_update = preg_match('/<release tag="([^"]+)" version="([^"]+)" (codename="([^"]+)" )?relnotes="([^"]+)" ?\/>/', $response, $match);

    if ( !$first_update )

    {

      echo '<enano><error><![CDATA[

Received invalid XML response.

]]></error></enano>';

    }

    else

    {

      if ( version_compare(enano_version(true), $match[2], '<') )

      {

        $response = str_replace_once('</latest>', "  <haveupdates />\n  </latest>", $response);

      }

      echo $response;

    }

  }

  return true;

}

function acphome_show_stats()

{

  global $db, $session, $paths, $template, $plugins; // Common objects

  global $lang;

  // Page count

  $q = $db->sql_query('SELECT COUNT(*) FROM ' . table_prefix . "pages");

  if ( !$q )

    $db->_die();

  list($page_count) = $db->fetchrow_num();

  $db->free_result();

  // Edits per day

  $q = $db->sql_query('SELECT ( COUNT(*) - 1 ) AS edit_count, MIN(time_id) AS install_date FROM ' . table_prefix . 'logs WHERE ( log_type = \'page\' AND action = \'edit\' ) OR ( log_type = \'security\' AND action = \'install_enano\' );');

  if ( !$q )

    $db->_die();

  $edit_info = $db->fetchrow();

  $install_date =& $edit_info['install_date'];

  $db->free_result();

  $days_installed = round( (time() / 86400) - ($install_date / 86400) );

  if ( $days_installed < 1 )

    $days_installed = 1;

  // Comments

  $q = $db->sql_query('SELECT COUNT(*) FROM ' . table_prefix . "comments");

  if ( !$q )

    $db->_die();

  list($comment_count) = $db->fetchrow_num();

  $db->free_result();

  // Users

  $q = $db->sql_query('SELECT ( COUNT(*) - 1 ) FROM ' . table_prefix . "users");

  if ( !$q )

    $db->_die();

  list($user_count) = $db->fetchrow_num();

  $db->free_result();

  // Cache size

  $cache_size = 0;

  if ( $dr = @opendir(ENANO_ROOT . '/cache/') )

  {

    while ( $dh = @readdir($dr) )

    {

      $file = ENANO_ROOT . "/cache/$dh";

      if ( @is_file($file) )

        $cache_size += filesize($file);

    }

    closedir($dr);

  }

  $cache_size = humanize_filesize($cache_size);

  // Files directory size

  $files_size = 0;

  if ( $dr = @opendir(ENANO_ROOT . '/files/') )

  {

    while ( $dh = @readdir($dr) )

    {

      $file = ENANO_ROOT . "/files/$dh";

      if ( @is_file($file) )

        $files_size += filesize($file);

    }

    closedir($dr);

  }

  $files_size = humanize_filesize($files_size);

  // Avatar directory size

  $avatar_size = 0;

  if ( $dr = @opendir(ENANO_ROOT . '/files/avatars/') )

  {

    while ( $dh = @readdir($dr) )

    {

      $file = ENANO_ROOT . "/files/avatars/$dh";

      if ( @is_file($file) )

        $avatar_size += filesize($file);

    }

    closedir($dr);

  }

  $avatar_size = humanize_filesize($avatar_size);

  // Database size

  $db_size = $lang->get('acphome_stat_dbsize_unsupported');

  if ( ENANO_DBLAYER == 'MYSQL' )

  {

    $q = $db->sql_query('SHOW TABLE STATUS;');

    if ( $q )

    {

      $db_size = 0;

      while ( $row = $db->fetchrow() )

      {

        if ( preg_match('/^' . table_prefix . '/', $row['Name']) )

        {

          $db_size += $row['Data_length'] + $row['Index_length'];

        }

      }

      $db_size = humanize_filesize($db_size);

    }

  }

  else if ( ENANO_DBLAYER == 'PGSQL' )

  {

    require(ENANO_ROOT . '/config.php');

    global $dbname, $dbuser, $dbpasswd;

    $dbuser = false;

    $dbpasswd = false;

    $q = $db->sql_query('SELECT pg_database_size(\'' . $db->escape($dbname) . '\');');

    if ( $q )

    {

      list($db_size) = $db->fetchrow_num();

      $db_size = humanize_filesize($db_size);

      $db->free_result();

    }

  }

  // Install date

  $install_date_human = MemberlistFormatter::format_date($install_date);

  // Last upgrade

  $q = $db->sql_query('SELECT time_id FROM ' . table_prefix . "logs WHERE log_type = 'security' AND action = 'upgrade_enano' ORDER BY time_id DESC LIMIT 1;");

  if ( !$q )

    $db->_die();

  if ( $db->numrows() < 1 )

  {

    $last_upgrade = $lang->get('acphome_stat_lastupdate_never');

  }

  else

  {

    list($last_upgrade) = $db->fetchrow_num();

    $last_upgrade = MemberlistFormatter::format_date($last_upgrade);

  }

  $db->free_result();

  ?>

  <div class="tblholder">

  <table border="0" cellspacing="1" cellpadding="4">

    <tr>

      <th colspan="4">

        <?php echo $lang->get('acphome_stat_header'); ?>

      </th>

    </tr>

    <tr>

      <td class="row2" style="width: 25%;">

        <?php echo $lang->get('acphome_stat_numpages'); ?>

      </td>

      <td class="row1" style="width: 25%;">

        <?php echo strval($page_count); ?>

      </td>

      <td class="row2" style="width: 25%;">

        <?php echo $lang->get('acphome_stat_edits'); ?>

      </td>

      <td class="row1" style="width: 25%;">

        <?php echo $lang->get('acphome_stat_edits_data', array('edit_count' => $edit_info['edit_count'], 'per_day' => number_format($edit_info['edit_count'] / $days_installed, 2))); ?>

      </td>

    </tr>

    <tr>

      <td class="row2" style="width: 25%;">

        <?php echo $lang->get('acphome_stat_comments'); ?>

      </td>

      <td class="row1" style="width: 25%;">

        <?php echo $lang->get('acphome_stat_comments_data', array('comment_count' => $comment_count, 'per_day' => number_format($comment_count / $days_installed, 2))); ?>

      </td>

      <td class="row2" style="width: 25%;">

        <?php echo $lang->get('acphome_stat_users'); ?>

      </td>

      <td class="row1" style="width: 25%;">

        <?php echo strval($user_count); ?>

      </td>

    </tr>

    <tr>

      <td class="row2" style="width: 25%;">

        <?php echo $lang->get('acphome_stat_filesize'); ?>

      </td>

      <td class="row1" style="width: 25%;">

        <?php echo $files_size; ?>

      </td>

      <td class="row2" style="width: 25%;">

        <?php echo $lang->get('acphome_stat_cachesize'); ?>

      </td>

      <td class="row1" style="width: 25%;">

        <?php echo $cache_size; ?>

      </td>

    </tr>

    <tr>

      <td class="row2" style="width: 25%;">

        <?php echo $lang->get('acphome_stat_avatarsize'); ?>

      </td>

      <td class="row1" style="width: 25%;">

        <?php echo $avatar_size; ?>

      </td>

      <td class="row2" style="width: 25%;">

        <?php echo $lang->get('acphome_stat_dbsize'); ?>

      </td>

      <td class="row1" style="width: 25%;">

        <?php echo $db_size; ?>

      </td>

    </tr>

    <tr>

      <td class="row2" style="width: 25%;">

        <?php echo $lang->get('acphome_stat_installdate'); ?>

      </td>

      <td class="row1" style="width: 25%;">

        <?php echo $install_date_human; ?>

      </td>

      <td class="row2" style="width: 25%;">

        <?php echo $lang->get('acphome_stat_lastupdate'); ?>

      </td>

      <td class="row1" style="width: 25%;">

        <?php echo $last_upgrade; ?>

      </td>

    </tr>

    <tr>

      <th colspan="4" class="subhead systemversion">

        <?php echo $lang->get('acphome_stat_enano_version', array(

            'version' => enano_version(true),

            'releasename' => enano_codename(),

            'aboutlink' => makeUrlNS('Special', 'About_Enano')

          )); ?>

      </th>

    </tr>

  </table>

  </div>

  <?php

}