<?php
/*
Plugin Name: NBC UserAdvManager
Version: 2.12.5
Description: Renforcer les possibilités de gestion des utilisateurs - Enforce users management
Plugin URI: http://fr.piwigo.org/ext/extension_view.php?eid=216
Author: Nicco, Eric
Author URI: http://gallery-nicco.no-ip.org, http://www.infernoweb.net
*/

/*
 ***** Plugin history (branch 2.10)*****

-- 2.10.0-beta : Initial beta release for Piwigo compatibility
-- 2.10.1-beta : Small correction on generated path
-- 2.10.2-beta : Bug resolved on register validation page

-- 2.10.3 : Final and fully functional release
						Bug resolved on plugin activation

-- 2.10.4 : Bug fixed on profiles update

-- 2.10.5 : Improved code on profiles update

-- 2.10.6 : Old language packs (iso) deleted (forget from PWG 1.7.x version)

-- 2.10.7 : Bug fixed on user's validation email sending

-- 2.10.8 : ConfirmMail page looks better (Sylvia theme only)
						Improved code for checking author on guest comments

-- 2.10.9 : Bug fixed - Missing english translation
						Bug fixed - Notice on forbidden characters function use
						Bug fixed - Audit on forbidden characters in username didn't work
						Adding of email provider exclusion (like *@hotmail.com) - Warning ! -> Known bug : This feature doesn't work on user profile page. So, already registered users can change their email address to a forbiden one.

-- 2.10.9a : Email provider exclusion is no longer case sensitive

-- 2.10.9b : Bug fixed - Home icon wasn't linked to gallery url in ConfirmMail page. If GALLERY_URL is not set, Home icon gets the pwg root path.

-- 2.10.9c : Bug fixed - If Email provider exclusion is set off, new registered user will have a PHP notice on "Undefined variable: ncsemail"

-- 2.10.9d : Code simplification - need no more ""template"" sub-directory in plugin directory for enhance "back link" icon in ConfirMail.tpl

-- 2.10.9e : Compatibility improvement with PHP 5.3 - Some old functions will be deprecated like :
							ereg replaced by preg_match
							eregi replace by preg_match with "i" moderator
							split replace by preg_split
				
-- 2.10.9f : Compatibility bug fixed when used with DynamicRecentPeriod plugin


 ***** Plugin history (branch 2.11)***** 

-- 2.11.0 : New tabsheet menu to manage ConfirMail functions (setting a timeout without validation, Cleanup expired user's accounts, Force confirmation, Renew validation key, list unvalidated users,...)
						Beautify plugin's main admin panel
						
-- 2.11.1 : Bug fixed with install and upgrade functions
						Language files correction

-- 2.11.2 : Bug fixed on bad query for unvalidated users display in unvalidated users list
						Bug fixed : Sql syntax error on plugin activation

-- 2.11.3 : On Patricia's request (french forum and bug 1173), the unvalidated users management tab shows users according with the settings of unvalidated group and / or unvalidated status.
						Feature 1172 added : Email providers exclusion list can be set with CR/LF between each entry. The comma seperator (,) is still mandatory.
						Bug 1175 fixed : Bad translation tag in french language file.
						Improvement of unvalidated users management tab (feature 1174)- Expired users are displayed in red color text.

-- 2.11.4 : Bug 1177 fixed : Width of excluded email providers list reset to ancient value (80 col)
						Bug 1179 fixed : Adding a notice in plugin inline documentation for use of validation groups and status. A default group must be set in Piwigo's groups settings and the "Guest" (or another user) must be set as default for status values.
						Bug 1182 fixed : Language tag missing in confirmation email generation 

-- 2.11.5 : Bug 1195 fixed : Registration displays the good title


 ***** Plugin history (branch 2.12)*****

-- 2.12.0 : Bug 1206 fixed : All plugin functionnalities work in user's profile page
                Plugin's core code and admin panel refactoring
                Password control and enforcement : A complexity score is computed on user registration. If this score is less than the goal set by admin, the password choosen is rejected.
                Feature 1194 "Ghost Tracker" added : New plugin tab displays users who don't comes back to the gallery since x days. Ability to send email reminders and to delete reminded but "dead" users. It's the reason why this feature is called "Ghost Tracker".

-- 2.12.1 : Rollback on admin panel improvement (it was a bad idea)

-- 2.12.2 : Bug 1221 fixed - Adding of a new funtion to populate the lastvisit table on Ghost Tracker activation
            Bug 1224 fixed - Error in database after plugin activation
            Bug 1225 fixed - "Reminder" status don't change from "false" to "true" after the sent of a reminder email
            Some code beautify (SQL requests and HTML 4 strict for tpl)

-- 2.12.3 : Bug 1226 fixed - "duplicate key error" when lastvisit table is not empty and on using Ghost Tracker init function

-- 2.12.4 : Adding a password field control for SendMail2User - Neighborhood plugin compatibility improvement 
            Bug 1229 fixed - Email was no longer mandatory when plugin was active, even if Piwigo's email madatory option was set. 

-- 2.12.5 : Bug 1233 fixed -  "duplicate key error" when a user wants to register with an existing username. In fact, all standard Piwigo's register controls didn't work when plugin was activated. That fixes this too.
            Adding DE, ES and IT languages. All translations are not finalized and could be improved.
            Adding of description.txt file in language directories.
*/

/*

 ***** TODO List *****
++ No validation needed for admins users comments (new trigger needed in comments.php ?)

++ No single email check for admins (new trigger needed in functions_user.inc.php ?)

++ Password control and enforcement
  ?? Can not be the same as username -> Could password score control be sufficient ? 
  
++ Security : Blocking brut-force attacks !
              -> Way to do that : Count the number of failed attempts to connect and lock the targetted account after x attempts. Where x will be settable by admin.
              To unlock the locked account :
               -> A new table in admin's plugin panel which would display the locked accounts.
               -> Sending an email to account owner to inform him his account is blocked due to multiple failed connexions attempts. This email could have a link with a security key to unlock the account.
               -> Both of above solutions ?

++ Opportunity to copy a registered user for new user creation
  ++ new copied user will (or not) belong to the same groups
  ++ new copied user will (or not) get the same status (visitor, admin, webmaster, guest (??))
  ++ new copied user will (or not) get the same properties
  ++ new copied user will (or not) get the same language
  ... and so on
  
*/


if (!defined('PHPWG_ROOT_PATH'))
{
  die('Hacking attempt!');
}

define('NBC_UserAdvManager_DIR' , basename(dirname(__FILE__)));
define('NBC_UserAdvManager_PATH' , PHPWG_PLUGINS_PATH.basename(dirname(__FILE__)).'/');

include_once (NBC_UserAdvManager_PATH.'include/constants.php');
include_once (NBC_UserAdvManager_PATH.'include/functions_UserAdvManager.inc.php');

load_language('plugin.lang', NBC_UserAdvManager_PATH);


/* Plugin admin */
add_event_handler('get_admin_plugin_menu_links', 'nbc_UserAdvManager_admin_menu');

function nbc_UserAdvManager_admin_menu($menu)
{
  array_push($menu,
    array(
      'NAME' => 'UserAdvManager',
      'URL'  => get_admin_plugin_menu_link(NBC_UserAdvManager_PATH.'/admin/UserAdvManager_admin.php')
    )
  );

  return $menu;
}


add_event_handler('loc_begin_index', 'UserAdvManager_GhostTracker');

function UserAdvManager_GhostTracker()
{
  global $conf, $user;
  
  $conf_nbc_UserAdvManager = isset($conf['nbc_UserAdvManager']) ? explode(";" , $conf['nbc_UserAdvManager']) : array();

  if (isset($conf_nbc_UserAdvManager[17]) and $conf_nbc_UserAdvManager[17] == 'true' and !is_admin() and !is_a_guest())
  {

    $userid = get_userid($user['username']);
     	  
    /* Looking for existing entry in last visit table */
    $query = '
SELECT *
  FROM '.USER_LASTVISIT_TABLE.'
WHERE user_id = '.$userid.'
;';
        
    $count = mysql_num_rows(pwg_query($query));
         
    if ($count == 0)
    {
      /* If not, data are inserted in table */
      $query = '
INSERT INTO '.USER_LASTVISIT_TABLE.' (user_id, lastvisit, reminder)
VALUES ('.$userid.', now(), "false")
;';
      pwg_query($query);
    }
    else if ($count > 0)
    {
      /* If yes, data are updated in table */
      $query = '
UPDATE '.USER_LASTVISIT_TABLE.'
SET lastvisit = now(), reminder = "false"
WHERE user_id = '.$userid.'
LIMIT 1
;';
      pwg_query($query);
    }
  }
}


/* User creation */
add_event_handler('register_user', 'UserAdvManager_Adduser');

function UserAdvManager_Adduser($register_user)
{
  global $conf;
  
  $conf_nbc_UserAdvManager = isset($conf['nbc_UserAdvManager']) ? explode(";" , $conf['nbc_UserAdvManager']) : array();
  
  /* Sending registration confirmation by email */
  if ((isset($conf_nbc_UserAdvManager[0]) and $conf_nbc_UserAdvManager[0] == 'true') or (isset($conf_nbc_UserAdvManager[2]) and $conf_nbc_UserAdvManager[2] == 'true'))
  {
    $passwd = (isset($_POST['password'])) ? $_POST['password'] : '';
    SendMail2User(1, $register_user['id'], $register_user['username'], $passwd, $register_user['email'], true);
  }
}


/* User deletion */
add_event_handler('delete_user', 'UserAdvManager_Deluser');

function UserAdvManager_Deluser($user_id)
{
  /* Cleanup for ConfirmMail table */
  DeleteConfirmMail($user_id);
  /* Cleanup for LastVisit table */
  DeleteLastVisit($user_id);
}


/* Check users registration */
add_event_handler('register_user_check', 'UserAdvManager_RegistrationCheck', EVENT_HANDLER_PRIORITY_NEUTRAL, 2);

function UserAdvManager_RegistrationCheck($err, $user)
{
  global $errors, $conf;

/* *********************************************************** */
/* We need to reset the standard Piwigo's register controls    */
/* because the call of register_user_check trigger resets them */
/* *********************************************************** */
  /* ********************************** */
  /* Standard Piwigo's username control */
  /* ********************************** */
  if ($_POST['login'] == '')
  {
    return l10n('reg_err_login1');
  }
  if (preg_match('/^.* $/', $_POST['login']))
  {
    return l10n('reg_err_login2');
  }
  if (preg_match('/^ .*$/', $_POST['login']))
  {
    return l10n('reg_err_login3');
  }
  if (get_userid($_POST['login']))
  {
    return l10n('reg_err_login5');
  }
  
  /* ***************************** */
  /* Standard Piwigo's email check */
  /* ***************************** */
  $atom   = '[-a-z0-9!#$%&\'*+\\/=?^_`{|}~]';   // before  arobase
  $domain = '([a-z0-9]([-a-z0-9]*[a-z0-9]+)?)'; // domain name
  $regex = '/^' . $atom . '+' . '(\.' . $atom . '+)*' . '@' . '(' . $domain . '{1,63}\.)+' . $domain . '{2,63}$/i';

  if (!preg_match($regex, $_POST['mail_address']))
  {
    return l10n('reg_err_mail_address');
  }

  if (!empty($_POST['mail_address']))
  {
    $query = '
select count(*)
from '.USERS_TABLE.'
where upper('.$conf['user_fields']['email'].') = upper(\''.$_POST['mail_address'].'\');';
    list($count) = mysql_fetch_array(pwg_query($query));
    if ($count != 0)
    {
      return l10n('reg_err_mail_address_dbl');
    }
  }
/* ****************************************** */
/* End of Piwigo's standard register controls */
/* ****************************************** */


/* ****************************************** */
/* Here begins the advanced register controls */
/* ****************************************** */
  $PasswordCheck = 0;
  
  $conf_nbc_UserAdvManager = isset($conf['nbc_UserAdvManager']) ? explode(";" , $conf['nbc_UserAdvManager']) : array();

  /* Password enforcement control */
  if (isset($conf_nbc_UserAdvManager[14]) and $conf_nbc_UserAdvManager[14] == 'true' and !empty($conf_nbc_UserAdvManager[15]))
  {
    if (!empty($user['password']) and !is_admin())
    {
      $PasswordCheck = testpassword($user['password']);
  
      if ($PasswordCheck < $conf_nbc_UserAdvManager[15])
      {
        $message = get_l10n_args('reg_err_login4_%s', $PasswordCheck);
        return($lang['reg_err_pass'] = l10n_args($message).$conf_nbc_UserAdvManager[15]);
      }
    }
    else if (!empty($user['password']) and is_admin() and isset($conf_nbc_UserAdvManager[16]) and $conf_nbc_UserAdvManager[16] == 'true')
    { 
      $PasswordCheck = testpassword($user['password']);
  
      if ($PasswordCheck < $conf_nbc_UserAdvManager[15])
      {
        $message = get_l10n_args('reg_err_login4_%s', $PasswordCheck);
        return($lang['reg_err_pass'] = l10n_args($message).$conf_nbc_UserAdvManager[15]);
      }
    }
  }

  /* Username non case sensitive */
  if (isset($conf_nbc_UserAdvManager[1]) and $conf_nbc_UserAdvManager[1] == 'true')
  {
    $new_username =  NotSensibleSearchUsername($_POST['login']);
    $_POST['login'] = $new_username == '' ? $_POST['login'] : $new_username;
  }

  /* Username without forbidden keys */
  if (isset($conf_nbc_UserAdvManager[7]) and $conf_nbc_UserAdvManager[7] == 'true' and !empty($_POST['login']) and !ValidateUsername($_POST['login']))
  {
    $_POST['login'] = '';
    return($lang['reg_err_login1'] = l10n('reg_err_login6')."'".$conf_nbc_UserAdvManager[8]."'");
  }

  /* Email without forbidden domains */
  if (isset($conf_nbc_UserAdvManager[12]) and $conf_nbc_UserAdvManager[12] == 'true' and !empty($_POST['mail_address']) and !ValidateEmailProvider($_POST['mail_address']))
  {
    //$_POST['mail_address'] = '';
    return($lang['reg_err_login1'] = l10n('reg_err_login7')."'".$conf_nbc_UserAdvManager[13]."'");
  }
}


if (script_basename() == 'profile')
{
  add_event_handler('loc_begin_profile', 'UserAdvManager_Profile_Init');

  function UserAdvManager_Profile_Init()
  {
    global $conf, $user, $template;

    $conf_nbc_UserAdvManager = isset($conf['nbc_UserAdvManager']) ? explode(";" , $conf['nbc_UserAdvManager']) : array();

    if (isset($_POST['validate']))
    {
      /* Email without forbidden domains */
      if (isset($conf_nbc_UserAdvManager[12]) and $conf_nbc_UserAdvManager[12] == 'true' and !empty($_POST['mail_address']))
      {
        if (!ValidateEmailProvider($_POST['mail_address']))
        {
          $template->append('errors', l10n('reg_err_login7')."'".$conf_nbc_UserAdvManager[13]."'");
          unset($_POST['validate']);
        }
      }

      $typemail = 3;
      
      if (!empty($_POST['use_new_pwd']))
      {
        $typemail = 2;
        
        /* Password enforcement control */
        if (isset($conf_nbc_UserAdvManager[14]) and $conf_nbc_UserAdvManager[14] == 'true' and !empty($conf_nbc_UserAdvManager[15]))
        {
          $PasswordCheck = testpassword($_POST['use_new_pwd']);
         
          if ($PasswordCheck < $conf_nbc_UserAdvManager[15])
          {
            $message = get_l10n_args('reg_err_login4_%s', $PasswordCheck);
            $template->append('errors', l10n_args($message).$conf_nbc_UserAdvManager[15]);
            unset($_POST['use_new_pwd']);
            unset($_POST['validate']);
          }
        }
      }
      
      /* Sending registration confirmation by email */
      if (( isset($conf_nbc_UserAdvManager[0]) and $conf_nbc_UserAdvManager[0] == 'true') or ( isset($conf_nbc_UserAdvManager[2]) and $conf_nbc_UserAdvManager[2] == 'true'))
      {
        $confirm_mail_need = false;
              
        if (!empty($_POST['mail_address']) and ValidateEmailProvider($_POST['mail_address']))
        {
          $query = '
SELECT '.$conf['user_fields']['email'].' AS email
FROM '.USERS_TABLE.'
WHERE '.$conf['user_fields']['id'].' = \''.$user['id'].'\'
;';
          
          list($current_email) = mysql_fetch_row(pwg_query($query));
      
          if ( $_POST['mail_address'] != $current_email and ( isset($conf_nbc_UserAdvManager[2]) and $conf_nbc_UserAdvManager[2] == 'true') )
        
            $confirm_mail_need = true;
        }
        
        if ((!empty($_POST['use_new_pwd']) and ( isset($conf_nbc_UserAdvManager[0]) and $conf_nbc_UserAdvManager[0] == 'true') or $confirm_mail_need) )
        {
          $query = '
SELECT '.$conf['user_fields']['username'].'
FROM '.USERS_TABLE.'
WHERE '.$conf['user_fields']['id'].' = \''.$user['id'].'\'
;';
        
          list($username) = mysql_fetch_row(pwg_query($query));

          SendMail2User($typemail, $user['id'], $username, $_POST['use_new_pwd'], $_POST['mail_address'], $confirm_mail_need);
        }
      }
    }
  }
}


add_event_handler('init', 'UserAdvManager_InitPage');
 
function UserAdvManager_InitPage()
{
  load_language('plugin.lang', NBC_UserAdvManager_PATH);
  global $conf, $template, $page, $lang, $errors;

  $conf_nbc_UserAdvManager = isset($conf['nbc_UserAdvManager']) ? explode(";" , $conf['nbc_UserAdvManager']) : array();
  
  /* Username non case sensitive */
  if (isset($conf_nbc_UserAdvManager[1]) and $conf_nbc_UserAdvManager[1] == 'true')
  {
    $lang['reg_err_login5'] = l10n('reg_err_login5');
  }
  

/* User identification */
  if (script_basename() == 'identification')
  {
    if (isset($_POST['login']))
    {
      /* User non case sensitive */
      if (isset($conf_nbc_UserAdvManager[1]) and $conf_nbc_UserAdvManager[1] == 'true' )
      {
        $new_username =  NotSensibleSearchUsername($_POST['username']);
        $_POST['username'] = $new_username == '' ? $_POST['username'] : $new_username;
      }
    }
  }


/* Admin user management */
  if (script_basename() == 'admin' and isset($_GET['page']) and $_GET['page'] == 'user_list')
  {
    if (isset($_POST['submit_add']))
    {
      /* User non case sensitive */
      if (isset($conf_nbc_UserAdvManager[1]) and $conf_nbc_UserAdvManager[1] == 'true' )
      {
        $new_username =  NotSensibleSearchUsername($_POST['login']);
        $_POST['login'] = $new_username == '' ? $_POST['login'] : $new_username;
      }

      /* Username without forbidden keys */
      if (isset($conf_nbc_UserAdvManager[7]) and $conf_nbc_UserAdvManager[7] == 'true' and !empty($_POST['login']) and !ValidateUsername($_POST['login']))
      {
        $template->append('errors', l10n('reg_err_login6')."'".$conf_nbc_UserAdvManager[8]."'");
        unset($_POST['submit_add']);
      }

      /* Email without forbidden domains */
      if (isset($conf_nbc_UserAdvManager[12]) and $conf_nbc_UserAdvManager[12] == 'true' and !empty($_POST['email']) and !ValidateEmailProvider($_POST['email']))
      {
        $template->append('errors', l10n('reg_err_login7')."'".$conf_nbc_UserAdvManager[13]."'");
        unset($_POST['submit_add']);
      }
    }
  }
}


add_event_handler('user_comment_check', 'UserAdvManager_CheckEmptyCommentAuthor', 50, 2);

function UserAdvManager_CheckEmptyCommentAuthor($comment_action, $comm)
{
  load_language('plugin.lang', NBC_UserAdvManager_PATH);
  global $infos, $conf, $template;

  $conf_nbc_UserAdvManager = isset($conf['nbc_UserAdvManager']) ? explode(";" , $conf['nbc_UserAdvManager']) : array();

/* User creation OR update */
  if (isset($conf_nbc_UserAdvManager[6]) and $conf_nbc_UserAdvManager[6] == 'true' and $conf['comments_forall'] == 'true' and $comm['author'] == 'guest')
  {
    $comment_action = 'reject';

    array_push($infos, l10n('UserAdvManager_Empty Author'));
  }

  return $comment_action;
}

?>