<?php // -*- mode:php; tab-width:4; indent-tabs-mode:t; c-basic-offset:4; -*-
#CMS - CMS Made Simple
#(c)2004-2008 by Ted Kulp (ted@cmsmadesimple.org)
#This project's homepage is: http://cmsmadesimple.org
#
#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 more details.
#You should have received a copy of the GNU General Public License
#along with this program; if not, write to the Free Software
#Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
#
#$Id$
 
/**
 * Class to hold the configuration values found in the config.php file.
 *
 * @author Ted Kulp
 * @since 2.0
 * @version $Revision$
 * @modifiedby $LastChangedBy$
 * @lastmodified $Date$
 * @license GPL
 **/
class CmsConfig extends CmsObject implements ArrayAccess
{
  var $params;
  static private $instance = NULL;
  static private $config_file_location = '';
 
  function __construct()
  {
    parent::__construct();
    $this->params = array();
  }
  
  static public function get_instance()
  {
    if (self::$instance == NULL)
    {
      self::$instance = new CmsConfig();
      self::$instance->load();
    }
    return self::$instance;
  }
  
  static public function get_config_filename()
  {
    if (self::$config_file_location == '')
    {
      $filename = dirname(CONFIG_FILE_LOCATION) . DS . 'config-' . CMS_VERSION . '.php';
      if (file_exists($filename))
      {
        self::$config_file_location = $filename;
      }
      else
      {
        self::$config_file_location = CONFIG_FILE_LOCATION;
      }
    }
    return self::$config_file_location;
  }
  
  static public function exists($key)
  {
    $config = CmsConfig::get_instance();
    return array_key_exists($key, $config->params);
  }
  
  static public function get($key)
  {
    $config = CmsConfig::get_instance();
    return $config[$key];
  }
  
  function offsetSet($key, $value)
  {
    $this->params[$key] = $value;
  }
 
  function offsetGet($key)
  {
    if (array_key_exists($key, $this->params))
    {
      return $this->params[$key];
    }
  }
 
  function offsetUnset($key)
  {
    if (array_key_exists($key, $this->params))
    {
      unset($this->params[$key]);
    }
  }
 
  function offsetExists($offset)
  {
    return array_key_exists($offset, $this->params);
  }
  
  function load($loadLocal = true, $upgrade = false)
  {
    $config = array();
 
    #Set some defaults, just in case the config file is corrupted or
    #we're coming from an upgrade
    $config["dbms"] = "mysql";
    $config["db_hostname"] = "localhost";
    $config["db_username"] = "cms";
    $config["db_password"] = "cms";
    $config["db_name"] = "cms";
    $config["db_prefix"] = "cms_";
    $config["root_url"] = "http://www.something.com";
    $config["root_path"] = dirname(dirname(__FILE__));
    $config["query_var"] = "page";
    $config["use_bb_code"] = false;
    $config["smarty_security"] = false;
    $config["previews_path"] = $config["root_path"] . "/tmp/cache";
    $config["uploads_path"] = $config["root_path"] . "/uploads";
    $config["uploads_url"] = $config["root_url"] . "/uploads";
    $config["max_upload_size"] = 1000000;
    $config["debug"] = false;
    $config["assume_mod_rewrite"] = false;
    $config['internal_pretty_urls'] = false;
    $config["auto_alias_content"] = true;
    $config["image_manipulation_prog"] = "GD";
    $config["image_transform_lib_path"] = "/usr/bin/ImageMagick/";
    $config["use_Indite"] = true;
    $config["image_uploads_path"] = $config["root_path"] . "/uploads/images";
    $config["image_uploads_url"] = $config["root_url"] . "/uploads/images";
    $config["default_encoding"] = "";
    $config["disable_htmlarea_translation"] = false;
    $config["admin_dir"] = "admin";
    $config["persistent_db_conn"] = false;
    $config["default_upload_permission"] = '664';
    $config["page_extension"] = "";
    $config["locale"] = "";
    $config['old_stylesheet'] = true;
    $config['wiki_url'] = "http://wiki.cmsmadesimple.org/index.php/User_Handbook/Admin_Panel";
    $config['backwards_compatible'] = true;
    $config['timezone'] = 'Etc/GMT+0';
    $config['function_caching'] = true;
    $config['full_page_caching'] = false;
 
    if ($loadLocal == true)
    {
      //if (file_exists(CONFIG_FILE_LOCATION) && !cms_config_check_old_config())
      if (file_exists(self::get_config_filename()))
      {
        include(self::get_config_filename());
      }
    }
 
    #Check to see if this exists in the config.php yet
    if (!isset($config["admin_encoding"]))
    {
      #So this is our first setting of it.  Is default_encoding set already?
      #If so, set admin_encoding to match (and admin encodings should behave as before)
      if (isset($config["default_encoding"]) && $config["default_encoding"])
      {
        $config['admin_encoding'] = $config['default_encoding'];
      }
      else
      {
        #Ok, so last ditch effort.  Look for the encoding of the default template
        if ($upgrade == true)
        {
          $db = cms_db();
          $encoding = $db->GetOne('select encoding from '.cms_db_prefix().'templates where default_template = 1');
          if (isset($encoding) && $encoding != '')
          {
            $config["admin_encoding"] = $encoding;
          }
          else
          {
            $config["admin_encoding"] = "utf-8";
          }
        }
        else
        {
          $config["admin_encoding"] = "utf-8";
        }
      }
    }
    
    // Begin Multisite Modifications
    $subsite_config = $config['root_path'].DIRECTORY_SEPARATOR.'sites'.DIRECTORY_SEPARATOR.$_SERVER['HTTP_HOST'].DIRECTORY_SEPARATOR.'config.php';
    if(file_exists($subsite_config))
    {
      include $subsite_config;
      $config['is_subsite'] = true;
    }
    // End Multisite Modifications    
 
    $this->params = $config;
 
  }
  
  function save()
  {
    $newfiledir = dirname(self::get_config_filename());
    $newfilename = self::get_config_filename();
    if (is_writable($newfilename) || is_writable($newfiledir))
    {
      $handle = fopen($newfilename, "w");
      if ($handle)
      {
        fwrite($handle, "<?php\n\n");
        fwrite($handle, $this->config_text($this->params));
        fwrite($handle, "\n?>");
        fclose($handle);
      }
    }
  }
  
  function config_text($config)
  {
    $true = 'true';
    $false = 'false';
    $result = <<<EOF
 
#CMS Made Simple Configuration File
#Please clear the cache (Site Admin->Global Settings in the admin panel)
#after making any changes to path or url related options
 
#-----------------
#Database Settings
#-----------------
 
#This is your database connection information.  Name of the server,
#username, password and a database with proper permissions should
#all be setup before CMS Made Simple is installed.
\$config['dbms'] = '{$config['dbms']}';
\$config['db_hostname'] = '{$config['db_hostname']}';
\$config['db_username'] = '{$config['db_username']}';
\$config['db_password'] = '{$config['db_password']}';
\$config['db_name'] = '{$config['db_name']}';  
 
#If app needs to coexist with other tables in the same db,
#put a prefix here.  e.g. "cms_"
\$config['db_prefix'] = '{$config['db_prefix']}';
 
#Use persistent connections?  They're generally faster, but not all hosts
#allow them.
\$config['persistent_db_conn'] = ${$config['persistent_db_conn']?'true':'false'};
 
#-------------
#Path Settings
#-------------
 
#Document root as seen from the webserver.  No slash at the end
#If page is requested with https use https as root url
#e.g. http://blah.com
\$config['root_url'] = '{$config['root_url']}';
if(isset(\$_SERVER['HTTPS']) && \$_SERVER['HTTPS']=='on')
{
  \$config['root_url'] = str_replace('http','https',\$config['root_url']);
}
 
#Path to document root. This should be the directory this file is in.
#e.g. /var/www/localhost
\$config['root_path'] = '{$config['root_path']}';
 
#Name of the admin directory
\$config['admin_dir'] = '{$config['admin_dir']}';
 
#Where do previews get stored temporarily?  It defaults to tmp/cache.
\$config['previews_path'] = '{$config['previews_path']}';
 
#Where are uploaded files put?  This defaults to uploads.
\$config['uploads_path'] = '{$config['uploads_path']}';
 
#Where is the url to this uploads directory?
\$config['uploads_url'] = \$config['root_url'] . '{$config['uploads_url']}';
 
#---------------
#Upload Settings
#---------------
 
#Maxium upload size (in bytes)?
\$config['max_upload_size'] = {$config['max_upload_size']};
 
#Permissions for uploaded files.  This only really needs changing if your
#host has a weird permissions scheme.
\$config['default_upload_permission'] = '{$config['default_upload_permission']}';
 
#------------------
#Usability Settings
#------------------
 
#Should smarty be tightened up a bit?  This is only really necessary if you don't trust
#your users 100%.
\$config['smarty_security'] = ${$config['smarty_security']?'true':'false'};
 
#Should we use function caching?  This basically means that we cache certain data that
#is repeately queried from the database.  There shouldn't be many reasons to turn this
#off, but the option is there in case there are problems.
\$config['function_caching'] = ${$config['function_caching']?'true':'false'};
 
#Should we use full page caching?  This basically means that the database will not even
#be touched and contents will only come from a file cache that is reset every hour.  Only
#use this if you have a truly static site or in case of "slashdot" effect.
\$config['full_page_caching'] = ${$config['full_page_caching']?'true':'false'};
 
#CMSMS Debug Mode?  Turn is on to get a better error when you
#see {nocache} errors.
\$config['debug'] = ${$config['debug']?'true':'false'};
 
#Automatically assign alias based on page title?
\$config['auto_alias_content'] = ${$config['auto_alias_content']?'true':'false'};
 
#------------
#URL Settings
#------------
 
#Show mod_rewrite URLs in the menu? You must enable 'use_hierarchy' for this to work for modules
\$config['assume_mod_rewrite'] = ${$config['assume_mod_rewrite']?'true':'false'};
 
#Extension to use if you're using mod_rewrite for pretty URLs.
\$config['page_extension'] = '{$config['page_extension']}';
 
#If you don't use mod_rewrite, then would you like to use the built-in
#pretty url mechanism?  This will not work with IIS and the {metadata} tag
#should be in all of your templates before enabling.
\$config['internal_pretty_urls'] = ${$config['internal_pretty_urls']?'true':'false'};
 
#If using none of the above options, what should we be using for the query string
#variable?  (ex. http://www.mysite.com/index.php?page=somecontent)
\$config['query_var'] = '{$config['query_var']}';
 
#--------------
#Image Settings
#--------------
 
#Which program should be used for handling thumbnails in the image manager.
#See http://wiki.cmsmadesimple.org/index.php/User_Handbook/Admin_Panel/Content/Image_Manager for more
#info on what this all means
\$config['image_manipulation_prog'] = '{$config['image_manipulation_prog']}';
\$config['image_transform_lib_path'] = '{$config['image_transform_lib_path']}';
 
#Default path and URL for uploaded images in the image manager
\$config['image_uploads_path'] = '{$config['image_uploads_path']}';
\$config['image_uploads_url'] = \$config['root_url'] . '{$config['image_uploads_url']}'; 
 
#------------------------
#Locale/Encoding Settings
#------------------------
 
#Locale to use for various default date handling functions, etc.  Leaving
#this blank will use the server's default.  This might not be good if the
#site is hosted in a different country than it's intended audience.
\$config['locale'] = '{$config['locale']}';
 
#In almost all cases, default_encoding should be empty (which defaults to utf-8)
#and admin_encoding should be utf-8.  If you'd like this to be different, change
#both.  Keep in mind, however, that the admin interface translations are all in
#utf-8, and will be converted on the fly to match the admin_encoding.  This
#could seriously slow down the admin interfaces for users.
\$config['default_encoding'] = '{$config['default_encoding']}';
\$config['admin_encoding'] = '{$config['admin_encoding']}';
 
 
#Timezone for this site.
#Check http://php.net/manual/en/timezones.php for available timezones
\$config['timezone'] = 'Etc/GMT+0';
 
 
#---------------------------------------------
#Use the old stylesheet logic?  It's much slower, but it works with older
#versions of CMSMS.  You'll also need this set to true if there is a module
#that uses a stylesheet callback.  Leave it as false instead you really
#need it.
\$config['old_stylesheet'] = ${$config['old_stylesheet']?'true':'false'};
 
# URL of the Admin Panel section of the User Handbook
\$config['wiki_url'] = '{$config['wiki_url']}';
 
#Enable backwards compatibility mode?  This basically will allow some 
#modules written before 1.0 was released to work.  Keep in mind that this 
#will use a lot more memory and isn't guaranteed to fix the problem.
\$config['backwards_compatible'] = ${$config['backwards_compatible']?'true':'false'};
 
#Not used anymore... kept around, just in case
\$config['disable_htmlarea_translation'] = false;
\$config['use_Indite'] = true;
EOF;
    return $result;
  }
  
}
 
?>