PrivateBin/lib/configuration.php
2015-10-24 08:44:17 +02:00

236 lines
7.5 KiB
PHP

<?php
/**
* ZeroBin
*
* a zero-knowledge paste bin
*
* @link http://sebsauvage.net/wiki/doku.php?id=php:zerobin
* @copyright 2012 Sébastien SAUVAGE (sebsauvage.net)
* @license http://www.opensource.org/licenses/zlib-license.php The zlib/libpng License
* @version 0.21.1
*/
/**
* configuration
*
* parses configuration file, ensures default values present
*/
class configuration
{
/**
* parsed configuration
*
* @var array
*/
private $_configuration;
/**
* default configuration
*
* @var array
*/
private $_defaults = array(
'main' => array(
'discussion' => true,
'opendiscussion' => false,
'password' => true,
'fileupload' => false,
'burnafterreadingselected' => false,
'defaultformatter' => 'plaintext',
'syntaxhighlightingtheme' => null,
'sizelimit' => 2097152,
'template' => 'bootstrap',
'notice' => '',
'base64version' => '2.1.9',
'languageselection' => false,
'languagedefault' => '',
),
'expire' => array(
'default' => '1week',
'clone' => true,
),
'expire_options' => array(
'5min' => 300,
'10min' => 600,
'1hour' => 3600,
'1day' => 86400,
'1week' => 604800,
'1month' => 2592000,
'1year' => 31536000,
'never' => 0,
),
'formatter_options' => array(
'plaintext' => 'Plain Text',
'syntaxhighlighting' => 'Source Code',
'markdown' => 'Markdown',
),
'traffic' => array(
'limit' => 10,
'header' => null,
'dir' => 'data',
),
'model' => array(
'class' => 'zerobin_data',
),
'model_options' => array(
'dir' => 'data',
),
);
/**
* parse configuration file and ensure default configuration values are present
*
* @throws Exception
*/
public function __construct()
{
$config = array();
$configFile = PATH . 'cfg' . DIRECTORY_SEPARATOR . 'conf.ini';
if (is_readable($configFile))
{
$config = parse_ini_file($configFile, true);
foreach (array('main', 'model') as $section) {
if (!array_key_exists($section, $config)) {
throw new Exception(i18n::_('ZeroBin requires configuration section [%s] to be present in configuration file.', $section), 2);
}
}
}
$opts = '_options';
foreach ($this->_defaults as $section => $values)
{
// fill missing sections with default values
if (!array_key_exists($section, $config) || count($config[$section]) == 0)
{
$this->_configuration[$section] = $values;
if (array_key_exists('dir', $this->_configuration[$section]))
{
$this->_configuration[$section]['dir'] = PATH . $this->_configuration[$section]['dir'];
}
continue;
}
// provide different defaults for database model
elseif ($section == 'model_options' && $this->_configuration['model']['class'] == 'zerobin_db')
{
$values = array(
'dsn' => 'sqlite:' . PATH . 'data/db.sq3',
'tbl' => null,
'usr' => null,
'pwd' => null,
'opt' => array(PDO::ATTR_PERSISTENT => true),
);
}
// "*_options" sections don't require all defaults to be set
if (
$section !== 'model_options' &&
($from = strlen($section) - strlen($opts)) >= 0 &&
strpos($section, $opts, $from) !== false
)
{
if (is_int(current($values)))
{
$config[$section] = array_map('intval', $config[$section]);
}
$this->_configuration[$section] = $config[$section];
}
// check for missing keys and set defaults if necessary
else
{
foreach ($values as $key => $val)
{
if ($key == 'dir')
{
$val = PATH . $val;
}
$result = $val;
if (array_key_exists($key, $config[$section]))
{
if ($val === null)
{
$result = $config[$section][$key];
}
elseif (is_bool($val))
{
$val = strtolower($config[$section][$key]);
if (in_array($val, array('true', 'yes', 'on')))
{
$result = true;
}
elseif (in_array($val, array('false', 'no', 'off')))
{
$result = false;
}
else
{
$result = (bool) $config[$section][$key];
}
}
elseif (is_int($val))
{
$result = (int) $config[$section][$key];
}
elseif (is_string($val) && !empty($config[$section][$key]))
{
$result = (string) $config[$section][$key];
}
}
$this->_configuration[$section][$key] = $result;
}
}
}
// ensure a valid expire default key is set
if (!array_key_exists($this->_configuration['expire']['default'], $this->_configuration['expire_options']))
{
$this->_configuration['expire']['default'] = key($this->_configuration['expire_options']);
}
}
/**
* get configuration as array
*
* return array
*/
public function get()
{
return $this->_configuration;
}
/**
* get a key from the configuration, typically the main section or all keys
*
* @param string $key
* @param string $section defaults to main
* @throws Exception
* return mixed
*/
public function getKey($key, $section = 'main')
{
$options = $this->getSection($section);
if (!array_key_exists($key, $options))
{
throw new Exception(i18n::_('Invalid data.') . " $section / $key", 4);
}
return $this->_configuration[$section][$key];
}
/**
* get a key from the configuration, typically the main section or all keys
*
* @param string $key if empty, return all configuration options
* @param string $section defaults to main
* @throws Exception
* return mixed
*/
public function getSection($section)
{
if (!array_key_exists($section, $this->_configuration))
{
throw new Exception(i18n::_('ZeroBin requires configuration section [%s] to be present in configuration file.', $section), 3);
}
return $this->_configuration[$section];
}
}