<?php

/*

Plugin Name: User control panel

Plugin URI: http://www.enanocms.org/

Description: Provides the page Special:Preferences.

Author: Dan Fuhry

Version: 1.0

Author URI: http://www.enanocms.org/

*/

/*

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

 * Version 1.0 release candidate 2

 * Copyright (C) 2006-2007 Dan Fuhry

 *

 * 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 details.

 */

$userprefs_menu = Array();

$userprefs_menu_links = Array();

function userprefs_menu_add($section, $text, $link)

{

  global $userprefs_menu;

  if ( is_array($userprefs_menu[$section]) )

  {

    $userprefs_menu[$section][] = Array(

      'text' => $text,

      'link' => $link

      );

  }

  else

  {

    $userprefs_menu[$section] = Array(Array(

      'text' => $text,

      'link' => $link

      ));

  }

}

function userprefs_menu_html()

{

  global $userprefs_menu;

  global $userprefs_menu_links;

  $html = '';

  $quot = '"';

  foreach ( $userprefs_menu as $section => $buttons )

  {

    $html .= ( isset($userprefs_menu_links[$section]) ) ? "<a href={$quot}{$userprefs_menu_links[$section]}{$quot}>{$section}</a>\n        " : "<a>{$section}</a>\n        ";

    $html .= "<ul>\n          ";

    foreach ( $buttons as $button )

    {

      $html .= "  <li><a href={$quot}{$button['link']}{$quot}>{$button['text']}</a></li>\n          ";

    }

    $html .= "</ul>\n        ";

  }

  return $html;

}

function userprefs_show_menu()

{

  echo '<div class="menu_nojs">

          ' . userprefs_menu_html() . '

          <span class="menuclear"></span>

        </div>

        <br />

        ';

}

function userprefs_menu_init()

{

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

  global $userprefs_menu_links;

  userprefs_menu_add('Profile/membership', 'Edit e-mail address and password', makeUrlNS('Special', 'Preferences/EmailPassword'));

  userprefs_menu_add('Profile/membership', 'Edit signature', makeUrlNS('Special', 'Preferences/Signature'));

  userprefs_menu_add('Profile/membership', 'Edit public profile', makeUrlNS('Special', 'Preferences/Profile'));

  userprefs_menu_add('Private messages', 'Inbox', makeUrlNS('Special', 'PrivateMessages/Folder/Inbox'));

  userprefs_menu_add('Private messages', 'Outbox', makeUrlNS('Special', 'PrivateMessages/Folder/Outbox'));

  userprefs_menu_add('Private messages', 'Sent items', makeUrlNS('Special', 'PrivateMessages/Folder/Sent'));

  userprefs_menu_add('Private messages', 'Drafts', makeUrlNS('Special', 'PrivateMessages/Folder/Drafts'));

  userprefs_menu_add('Private messages', 'Archive', makeUrlNS('Special', 'PrivateMessages/Folder/Archive'));

  $userprefs_menu_links['Profile/membership'] = makeUrlNS('Special', 'Preferences');

  $userprefs_menu_links['Private messages']  = makeUrlNS('Special', 'PrivateMessages');

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

  foreach ( $code as $cmd )

  {

    eval($cmd);

  }

}

$plugins->attachHook('session_started', 'userprefs_menu_init();');

function page_Special_Preferences()

{

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

  // We need a login to continue

  if ( !$session->user_logged_in )

    redirect(makeUrlNS('Special', 'Login/' . $paths->page), 'Login required', 'You need to be logged in to access this page. Please wait while you are redirected to the login page.');

  // User ID - later this will be specified on the URL, but hardcoded for now

  $uid = intval($session->user_id);

  // Instanciate the AES encryptor

  $aes = new AESCrypt(AES_BITS, AES_BLOCKSIZE);

  // Basic user info

  $q = $db->sql_query('SELECT username, password, email, real_name, signature, theme, style FROM '.table_prefix.'users WHERE user_id='.$uid.';');

  if ( !$q )

    $db->_die();

  $row = $db->fetchrow();

  $db->free_result();

  $section = $paths->getParam(0);

  if ( !$section )

  {

    $section = 'Home';

  }

  $errors = '';

  switch ( $section )

  {

    case 'EmailPassword':

      // Require elevated privileges (well sortof)

      if ( $session->auth_level < USER_LEVEL_CHPREF )

      {

        redirect(makeUrlNS('Special', 'Login/' . $paths->fullpage, 'level=' . USER_LEVEL_CHPREF, true), 'Authentication required', 'You need to re-authenticate to access this page.', 0);

      }

      if ( isset($_POST['submit']) )

      {

        $email_changed = false;

        // First do the e-mail address

        if ( strlen($_POST['newemail']) > 0 )

        {

          switch('foo') // Same reason as in the password code...

          {

            case 'foo':

              if ( $_POST['newemail'] != $_POST['newemail_conf'] )

              {

                $errors .= '<div class="error-box">The e-mail addresses you entered did not match.</div>';

                break;

              }

          }

          $q = $db->sql_query('SELECT password FROM '.table_prefix.'users WHERE user_id='.$session->user_id.';');

          if ( !$q )

            $db->_die();

          $row = $db->fetchrow();

          $db->free_result();

          $old_pass = $aes->decrypt($row['password'], $session->private_key, ENC_HEX);

          $new_email = $_POST['newemail'];

          $result = $session->update_user($session->user_id, false, $old_pass, false, $new_email);

          if ( $result != 'success' )

          {

            die_friendly('Error updating e-mail address', '<p>Session API returned error: ' . $result . '</p>');

          }

          $email_changed = true;

        }

        // Obtain password

        if ( $_POST['use_crypt'] == 'yes' && !empty($_POST['crypt_data']) )

        {

          $key = $session->fetch_public_key($_POST['crypt_key']);

          if ( !$key )

            die('Can\'t lookup key');

          $key = hexdecode($key);

          $newpass = $aes->decrypt($_POST['crypt_data'], $key, ENC_HEX);

          // At this point we know if we _want_ to change the password...

          // We can't check the password to see if it matches the confirmation

          // because the confirmation was destroyed during the encryption. I figured

          // this wasn't a big deal because if the encryption worked, then either

          // the Javascript validated it or the user hacked the form. In the latter

          // case, if he's smart enough to hack the encryption code, he's probably

          // smart enough to remember his password.

          if ( strlen($newpass) > 0 )

          {

            // Perform checks

            if ( strlen($newpass) < 6 )

              $errors .= '<div class="error-box">Password must be at least 6 characters. You hacked my script, darn you!</div>';

            // Encrypt new password

            $newpass_enc = $aes->encrypt($newpass, $session->private_key, ENC_HEX);

            // Perform the swap

            $q = $db->sql_query('UPDATE '.table_prefix.'users SET password=\'' . $newpass_enc . '\' WHERE user_id=' . $session->user_id . ';');

            if ( !$q )

              $db->_die();

            // Log out and back in

            $username = $session->username;

            $session->logout();

            if ( $email_changed )

            {

              if ( getConfig('account_activation') == 'user' )

              {

                redirect(makeUrl(getConfig('main_page')), 'Profile changed', 'Your password and e-mail address have been changed. Since e-mail activation is required on this site, you will need to re-activate your account to continue. An e-mail has been sent to the new e-mail address with an activation link. You must click that link in order to log in again.', 19);

              }

              else if ( getConfig('account_activation') == 'admin' )

              {

                redirect(makeUrl(getConfig('main_page')), 'Profile changed', 'Your password and e-mail address have been changed. Since administrative activation is requires on this site, a request has been sent to the administrators to activate your account for you. You will not be able to use your account until it is activated by an administrator.', 19);

              }

            }

            $session->login_without_crypto($session->username, $newpass);

            redirect(makeUrlNS('Special', 'Preferences'), 'Password changed', 'Your password has been changed, and you will now be redirected back to the user control panel.', 4);

          }

        }

        else

        {

          switch('foo') // allow breaking out of our section...i can't wait until PHP6 (goto support!)

          {

            case 'foo':

              $pass = $_POST['newpass'];

              if ( $pass != $_POST['newpass_conf'] )

              {

                $errors .= '<div class="error-box">The passwords you entered did not match</div>';

                break;

              }

              if ( $email_changed )

              {

                if ( getConfig('account_activation') == 'user' )

                {

                  redirect(makeUrl(getConfig('main_page')), 'Profile changed', 'Your e-mail address has been changed. Since e-mail activation is required on this site, you will need to re-activate your account to continue. An e-mail has been sent to the new e-mail address with an activation link. You must click that link in order to log in again.', 19);

                }

                else if ( getConfig('account_activation') == 'admin' )

                {

                  redirect(makeUrl(getConfig('main_page')), 'Profile changed', 'Your e-mail address has been changed. Since administrative activation is requires on this site, a request has been sent to the administrators to activate your account for you. You will not be able to use your account until it is activated by an administrator.', 19);

                }

                else

                {

                  redirect(makeUrlNS('Special', 'Preferences'), 'Password changed', 'Your e-mail address has been changed, and you will now be redirected back to the user control panel.', 4);

                }

              }

              return;

          }

        }

      }

      $template->tpl_strings['PAGE_NAME'] = 'Change E-mail Address or Password';

      break;

    case 'Signature':

      $template->tpl_strings['PAGE_NAME'] = 'Editing signature';

      break;

    case 'Profile':

      $template->tpl_strings['PAGE_NAME'] = 'Editing public profile';

      break;

  }

  $template->header();

  // Output the menu

  // This is not templatized because it conforms to the jBox menu standard.

  userprefs_show_menu();

  switch ( $section )

  {

    case 'Home':

      global $email;

      $user_page = '<a href="' . makeUrlNS('User', str_replace(' ', '_', $session->username)) . '">user page</a> <sup>(<a href="' . makeUrlNS('User', str_replace(' ', '_', $session->username)) . '#do:comments">comments</a>)</sup>';

      $site_admin = $email->encryptEmail(getConfig('contact_email'), '', '', 'administrator');

      echo "<h3 style='margin-top: 0;'>$session->username, welcome to your control panel</h3>";

      echo "<p>Here you can make changes to your profile, view statistics on yourself on this site, and set your preferences.</p>

            <p>If you have not already done so, you are encouraged to make a $user_page and tell the other members of this site a little about yourself.</p>

            <p>Use the menu at the top to navigate around. If you have any questions, you may contact the $site_admin.";

      break;

    case 'EmailPassword':

      echo '<form action="' . makeUrlNS('Special', 'Preferences/EmailPassword') . '" method="post" onsubmit="return runEncryption();" name="empwform" >';

      // Password change form

      $pubkey = $session->rijndael_genkey();

      echo '<fieldset>

        <legend>Change password</legend>

        Type a new password:<br />

          <input type="password" name="newpass" size="30" tabindex="1" />

        <br />

        <br />

        Type the password again to confirm:<br />

          <input type="password" name="newpass_conf" size="30" tabindex="2" />

      </fieldset><br />

      <fieldset>

        <legend>Change e-mail address</legend>

        New e-mail address:<br />

          <input type="text" name="newemail" size="30" tabindex="3" />

        <br />

        <br />

        Confirm e-mail address:<br />

          <input type="text" name="newemail_conf" size="30" tabindex="4" />

      </fieldset>

      <input type="hidden" name="use_crypt" value="no" />

      <input type="hidden" name="crypt_key" value="' . $pubkey . '" />

      <input type="hidden" name="crypt_data" value="" />

      <br />

      <div style="text-align: right;"><input type="submit" name="submit" value="Save Changes" tabindex="5" /></div>';

      echo '</form>';

      // ENCRYPTION CODE

      ?>

      <script type="text/javascript">

        disableJSONExts();

        str = '';

        for(i=0;i<keySizeInBits/4;i++) str+='0';

        var key = hexToByteArray(str);

        var pt = hexToByteArray(str);

        var ct = rijndaelEncrypt(pt, key, "ECB");

        var ct = byteArrayToHex(ct);

        switch(keySizeInBits)

        {

          case 128:

            v = '66e94bd4ef8a2c3b884cfa59ca342b2e';

            break;

          case 192:

            v = 'aae06992acbf52a3e8f4a96ec9300bd7aae06992acbf52a3e8f4a96ec9300bd7';

            break;

          case 256:

            v = 'dc95c078a2408989ad48a21492842087dc95c078a2408989ad48a21492842087';

            break;

        }

        var aes_testpassed = ( ct == v && md5_vm_test() );

        function runEncryption()

        {

          var frm = document.forms.empwform;

          if ( frm.newpass.value.length < 1 )

            return true;

          if(aes_testpassed)

          {

            frm.use_crypt.value = 'yes';

            var cryptkey = frm.crypt_key.value;

            frm.crypt_key.value = hex_md5(cryptkey);

            cryptkey = hexToByteArray(cryptkey);

            if(!cryptkey || ( ( typeof cryptkey == 'string' || typeof cryptkey == 'object' ) ) && cryptkey.length != keySizeInBits / 8 )

            {

              frm.submit.disabled = true;

              len = ( typeof cryptkey == 'string' || typeof cryptkey == 'object' ) ? '\nLen: '+cryptkey.length : '';

              alert('The key is messed up\nType: '+typeof(cryptkey)+len);

            }

          }

          pass1 = frm.newpass.value;

          pass2 = frm.newpass_conf.value;

          if ( pass1 != pass2 )

          {

            alert('The passwords you entered do not match.');

            return false;

          }

          if ( pass1.length < 6 && pass1.length > 0 )

          {

            alert('The new password must be 6 characters or greater in length.');

            return false;

          }

          if(aes_testpassed)

          {

            pass = frm.newpass.value;

            pass = stringToByteArray(pass);

            cryptstring = rijndaelEncrypt(pass, cryptkey, 'ECB');

            if(!cryptstring)

            {

              return false;

            }

            cryptstring = byteArrayToHex(cryptstring);

            frm.crypt_data.value = cryptstring;

            frm.newpass.value = "";

            frm.newpass_conf.value = "";

          }

          return true;

        }

      </script>

      <?php

      break;

    case 'Signature':

      if ( isset($_POST['new_sig']) )

      {

        $sig = $_POST['new_sig'];

        $sig = RenderMan::preprocess_text($sig, true, false);

        $sql_sig = $db->escape($sig);

        $q = $db->sql_query('UPDATE '.table_prefix.'users SET signature=\'' . $sql_sig . '\' WHERE user_id=' . $session->user_id . ';');

        if ( !$q )

          $db->_die();

        $session->signature = $sig;

        echo '<div class="info-box" style="margin: 0 0 10px 0;">Your signature has been saved.</div>';

      }

      echo '<form action="'.makeUrl($paths->fullpage).'" method="post">';

      echo $template->tinymce_textarea('new_sig', $session->signature);

      echo '<input type="submit" value="Save signature" />';

      echo '</form>';

      break;

    case "Profile":

      if ( isset($_POST['submit']) )

      {

        $real_name = htmlspecialchars($_POST['real_name']);

        $real_name = $db->escape($real_name);

        $q = $db->sql_query('UPDATE '.table_prefix."users SET real_name='$real_name' WHERE user_id=$session->user_id;");

        if ( !$q )

          $db->_die();

        echo '<div class="info-box" style="margin: 0 0 10px 0;">Your profile has been updated.</div>';

      }

      echo '<form action="'.makeUrl($paths->fullpage).'" method="post">';

      ?>

      <div class="tblholder">

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

          <tr>

            <th colspan="2">Your public profile</th>

          </tr>

          <tr>

            <td colspan="2" class="row3">Please note that all of the information you enter here will be <b>publicly viewable.</b> All of the fields on this page are optional and may be left blank if you so desire.</td>

          </tr>

          <tr>

            <td class="row2" style="width: 50%;">Real name:</td>

            <td class="row1" style="width: 50%;"><input type="text" name="real_name" value="<?php echo $session->real_name; ?>" size="30" /></td>

          </tr>

          <tr>

            <td class="row2">Change theme:</td>

            <td class="row1">If you don't like the look of the site, need a visual break, or are just curious, we might have some different themes for you to try out! <a href="<?php echo makeUrlNS('Special', 'ChangeStyle/' . $paths->page); ?>" onclick="ajaxChangeStyle(); return false;">Change my theme...</a></td>

          </tr>

          <tr>

            <td colspan="2" class="row3"><small>More is coming soon - planned fields include AOL, WLM, Yahoo, and XMPP messenger fields, allow public display of e-mail address, allow private messages from users not on your buddy list, homepage, occupation, and location.</small></td>

          </tr>

          <tr>

            <th class="subhead" colspan="2">

              <input type="submit" name="submit" value="Save profile" />

            </th>

          </tr>

        </table>

      </div>

      <?php

      echo '</form>';

      break;

    default:

      $good = false;

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

      foreach ( $code as $cmd )

      {

        if ( eval($code) )

          $good = true;

      }

      if ( !$good )

      {

        echo '<h3>Invalid module</h3>

              <p>Userprefs module "'.$section.'" not found.</p>';

      }

      break;

  }

  $template->footer();

}

?>