diff --git a/index.php b/index.php
index 0c15ad2..d5ed0ae 100644
--- a/index.php
+++ b/index.php
@@ -7,7 +7,7 @@
  * @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
+ * @version   0.21.1
  */
 
 // change this, if your php files and data is outside of your webservers document root
diff --git a/lib/configuration.php b/lib/configuration.php
new file mode 100644
index 0000000..d65f5df
--- /dev/null
+++ b/lib/configuration.php
@@ -0,0 +1,191 @@
+<?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,
+        ),
+        'expire' => array(
+            'default' => '1week',
+        ),
+        '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 = parse_ini_file(PATH . 'cfg' . DIRECTORY_SEPARATOR . 'conf.ini', 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.', $section), 2);
+            }
+        }
+        foreach ($this->_defaults as $section => $values)
+        {
+            if (!array_key_exists($section, $config))
+            {
+                $this->_configuration[$section] = $this->_defaults[$section];
+                if (array_key_exists('dir', $this->_configuration[$section]))
+                {
+                    $this->_configuration[$section]['dir'] = PATH . $this->_configuration[$section]['dir'];
+                }
+                continue;
+            }
+            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;
+            }
+        }
+    }
+
+    /**
+     * 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];
+    }
+}
diff --git a/lib/zerobin.php b/lib/zerobin.php
index ff78b72..8ab3f95 100644
--- a/lib/zerobin.php
+++ b/lib/zerobin.php
@@ -32,14 +32,12 @@ class zerobin
     const GENERIC_ERROR = 'Paste does not exist, has expired or has been deleted.';
 
     /**
-     * configuration array
+     * configuration
      *
      * @access private
-     * @var    array
+     * @var    configuration
      */
-    private $_conf = array(
-        'model' => 'zerobin_data',
-    );
+    private $_conf;
 
     /**
      * data
@@ -164,13 +162,8 @@ class zerobin
             );
         }
 
-        $this->_conf = parse_ini_file(PATH . 'cfg' . DIRECTORY_SEPARATOR . 'conf.ini', true);
-        foreach (array('main', 'model') as $section) {
-            if (!array_key_exists($section, $this->_conf)) {
-                throw new Exception(i18n::_('ZeroBin requires configuration section [%s] to be present in configuration file.', $section), 2);
-            }
-        }
-        $this->_model = $this->_conf['model']['class'];
+        $this->_conf = new configuration;
+        $this->_model = $this->_conf->getKey('class', 'model');
     }
 
     /**
@@ -185,7 +178,7 @@ class zerobin
         if(is_string($this->_model)) {
             $this->_model = forward_static_call(
                 array($this->_model, 'getInstance'),
-                $this->_conf['model_options']
+                $this->_conf->getSection('model_options')
             );
         }
         return $this->_model;
@@ -222,12 +215,12 @@ class zerobin
         $attachmentname = $has_attachmentname ? $_POST['attachmentname'] : '';
 
         // Make sure last paste from the IP address was more than X seconds ago.
-        trafficlimiter::setLimit($this->_conf['traffic']['limit']);
-        trafficlimiter::setPath($this->_conf['traffic']['dir']);
+        trafficlimiter::setLimit($this->_conf->getKey('limit', 'traffic'));
+        trafficlimiter::setPath($this->_conf->getKey('dir', 'traffic'));
         $ipKey = 'REMOTE_ADDR';
-        if (array_key_exists('header', $this->_conf['traffic']))
+        if (($option = $this->_conf->getKey('header', 'traffic')) !== null)
         {
-            $header = 'HTTP_' . $this->_conf['traffic']['header'];
+            $header = 'HTTP_' . $option;
             if (array_key_exists($header, $_SERVER) && !empty($_SERVER[$header]))
             {
                 $ipKey = $header;
@@ -237,12 +230,12 @@ class zerobin
             1,
             i18n::_(
                 'Please wait %d seconds between each post.',
-                $this->_conf['traffic']['limit']
+                $this->_conf->getKey('limit', 'traffic')
             )
         );
 
         // Make sure content is not too big.
-        $sizelimit = (int) $this->_getMainConfig('sizelimit', 2097152);
+        $sizelimit = $this->_conf->getKey('sizelimit');
         if (
             strlen($data) + strlen($attachment) + strlen($attachmentname) > $sizelimit
         ) return $this->_return_message(
@@ -260,7 +253,7 @@ class zerobin
         if($has_attachment)
         {
             if (
-                !$this->_getMainConfig('fileupload', false) ||
+                !$this->_conf->getKey('fileupload') ||
                 !sjcl::isValid($attachment) ||
                 !($has_attachmentname && sjcl::isValid($attachmentname))
             ) return $this->_return_message(1, 'Invalid attachment.');
@@ -273,13 +266,14 @@ class zerobin
         if (array_key_exists('expire', $_POST) && !empty($_POST['expire']))
         {
             $selected_expire = (string) $_POST['expire'];
-            if (array_key_exists($selected_expire, $this->_conf['expire_options']))
+            $expire_options = $this->_conf->getSection('expire_options');
+            if (array_key_exists($selected_expire, $expire_options))
             {
-                $expire = $this->_conf['expire_options'][$selected_expire];
+                $expire = $expire_options[$selected_expire];
             }
             else
             {
-                $expire = $this->_conf['expire_options'][$this->_conf['expire']['default']];
+                $expire = $this->_conf->getKey($this->_conf->getKey('default', 'expire'), 'expire_options');
             }
             if ($expire > 0) $meta['expire_date'] = time() + $expire;
         }
@@ -297,7 +291,7 @@ class zerobin
 
         // Read open discussion flag.
         if (
-            $this->_getMainConfig('discussion', true) &&
+            $this->_conf->getKey('discussion') &&
             array_key_exists('opendiscussion', $_POST) &&
             !empty($_POST['opendiscussion'])
         )
@@ -314,9 +308,9 @@ class zerobin
         if (array_key_exists('formatter', $_POST) && !empty($_POST['formatter']))
         {
             $formatter = $_POST['formatter'];
-            if (!array_key_exists($formatter, $this->_conf['formatter_options']))
+            if (!array_key_exists($formatter, $this->_conf->getSection('formatter_options')))
             {
-                $formatter = $this->_getMainConfig('defaultformatter', 'plaintext');
+                $formatter = $this->_conf->getKey('defaultformatter');
             }
             $meta['formatter'] = $formatter;
         }
@@ -488,7 +482,7 @@ class zerobin
         }
 
         // Make sure token is valid.
-        serversalt::setPath($this->_conf['traffic']['dir']);
+        serversalt::setPath($this->_conf->getKey('dir', 'traffic'));
         if (!filter::slow_equals($deletetoken, hash_hmac('sha1', $dataid, serversalt::get())))
         {
             $this->_error = 'Wrong deletion token. Paste was not deleted.';
@@ -571,7 +565,7 @@ class zerobin
                     }
                     else
                     {
-                        $paste->meta->formatter = $this->_getMainConfig('defaultformatter', 'plaintext');
+                        $paste->meta->formatter = $this->_conf->getKey('defaultformatter');
                     }
                 }
 
@@ -613,17 +607,17 @@ class zerobin
 
         // label all the expiration options
         $expire = array();
-        foreach ($this->_conf['expire_options'] as $time => $seconds)
+        foreach ($this->_conf->getSection('expire_options') as $time => $seconds)
         {
             $expire[$time] = ($seconds == 0) ? i18n::_(ucfirst($time)): filter::time_humanreadable($time);
         }
 
         // translate all the formatter options
-        $formatters = array_map(array('i18n', 'translate'), $this->_conf['formatter_options']);
+        $formatters = array_map(array('i18n', 'translate'), $this->_conf->getSection('formatter_options'));
 
         // set language cookie if that functionality was enabled
         $languageselection = '';
-        if ($this->_getMainConfig('languageselection', false))
+        if ($this->_conf->getKey('languageselection'))
         {
             $languageselection = i18n::getLanguage();
             setcookie('lang', $languageselection);
@@ -636,38 +630,23 @@ class zerobin
         $page->assign('ERROR', i18n::_($this->_error));
         $page->assign('STATUS', i18n::_($this->_status));
         $page->assign('VERSION', self::VERSION);
-        $page->assign('DISCUSSION', $this->_getMainConfig('discussion', true));
-        $page->assign('OPENDISCUSSION', $this->_getMainConfig('opendiscussion', true));
+        $page->assign('DISCUSSION', $this->_conf->getKey('discussion'));
+        $page->assign('OPENDISCUSSION', $this->_conf->getKey('opendiscussion'));
         $page->assign('MARKDOWN', array_key_exists('markdown', $formatters));
         $page->assign('SYNTAXHIGHLIGHTING', array_key_exists('syntaxhighlighting', $formatters));
-        $page->assign('SYNTAXHIGHLIGHTINGTHEME', $this->_getMainConfig('syntaxhighlightingtheme', ''));
+        $page->assign('SYNTAXHIGHLIGHTINGTHEME', $this->_conf->getKey('syntaxhighlightingtheme'));
         $page->assign('FORMATTER', $formatters);
-        $page->assign('FORMATTERDEFAULT', $this->_getMainConfig('defaultformatter', 'plaintext'));
-        $page->assign('NOTICE', i18n::_($this->_getMainConfig('notice', '')));
-        $page->assign('BURNAFTERREADINGSELECTED', $this->_getMainConfig('burnafterreadingselected', false));
-        $page->assign('PASSWORD', $this->_getMainConfig('password', true));
-        $page->assign('FILEUPLOAD', $this->_getMainConfig('fileupload', false));
-        $page->assign('BASE64JSVERSION', $this->_getMainConfig('base64version', '2.1.9'));
+        $page->assign('FORMATTERDEFAULT', $this->_conf->getKey('defaultformatter'));
+        $page->assign('NOTICE', i18n::_($this->_conf->getKey('notice')));
+        $page->assign('BURNAFTERREADINGSELECTED', $this->_conf->getKey('burnafterreadingselected'));
+        $page->assign('PASSWORD', $this->_conf->getKey('password'));
+        $page->assign('FILEUPLOAD', $this->_conf->getKey('fileupload'));
+        $page->assign('BASE64JSVERSION', $this->_conf->getKey('base64version'));
         $page->assign('LANGUAGESELECTION', $languageselection);
         $page->assign('LANGUAGES', i18n::getLanguageLabels(i18n::getAvailableLanguages()));
         $page->assign('EXPIRE', $expire);
-        $page->assign('EXPIREDEFAULT', $this->_conf['expire']['default']);
-        $page->draw($this->_getMainConfig('template', 'page'));
-    }
-
-    /**
-     * get configuration option from [main] section, optionally set a default
-     *
-     * @access private
-     * @param  string $option
-     * @param  mixed $default (optional)
-     * @return mixed
-     */
-    private function _getMainConfig($option, $default = false)
-    {
-        return array_key_exists($option, $this->_conf['main']) ?
-            $this->_conf['main'][$option] :
-            $default;
+        $page->assign('EXPIREDEFAULT', $this->_conf->getKey('default', 'expire'));
+        $page->draw($this->_conf->getKey('template'));
     }
 
     /**
diff --git a/tst/bootstrap.php b/tst/bootstrap.php
index ba6336a..5f635cb 100644
--- a/tst/bootstrap.php
+++ b/tst/bootstrap.php
@@ -3,6 +3,7 @@ error_reporting( E_ALL | E_STRICT );
 
 // change this, if your php files and data is outside of your webservers document root
 if (!defined('PATH')) define('PATH', '..' . DIRECTORY_SEPARATOR);
+if (!defined('CONF')) define('CONF', PATH . 'cfg' . DIRECTORY_SEPARATOR . 'conf.ini');
 if (!defined('PUBLIC_PATH')) define('PUBLIC_PATH', '..');
 
 require PATH . 'lib/auto.php';
@@ -63,7 +64,6 @@ class helper
         return self::$pasteid;
     }
 
-
     /**
      * get example paste
      *
@@ -76,7 +76,6 @@ class helper
         return $example;
     }
 
-
     /**
      * get example paste ID
      *
@@ -87,7 +86,6 @@ class helper
         return self::$commentid;
     }
 
-
     /**
      * get example comment
      *
@@ -127,6 +125,28 @@ class helper
         }
     }
 
+    /**
+     * create a backup of the config file
+     *
+     * @return void
+     */
+    public static function confBackup()
+    {
+        if (!is_file(CONF . '.bak') && is_file(CONF))
+            rename(CONF, CONF . '.bak');
+    }
+
+    /**
+     * restor backup of the config file
+     *
+     * @return void
+     */
+    public static function confRestore()
+    {
+        if (is_file(CONF . '.bak'))
+            rename(CONF . '.bak', CONF);
+    }
+
     /**
      * create ini file
      *
diff --git a/tst/configGenerator.php b/tst/configGenerator.php
index d2f6358..a9a06a9 100755
--- a/tst/configGenerator.php
+++ b/tst/configGenerator.php
@@ -589,7 +589,7 @@ class configurationTestGenerator
         return <<<'EOT'
 <?php
 /**
- * DO NOT EDIT: This file is automatically generated by configGenerator.php
+ * DO NOT EDIT: This file is generated automatically using configGenerator.php
  */
 class configurationTest extends PHPUnit_Framework_TestCase
 {
@@ -600,9 +600,7 @@ class configurationTest extends PHPUnit_Framework_TestCase
     public function setUp()
     {
         /* Setup Routine */
-        $this->_conf = PATH . 'cfg' . DIRECTORY_SEPARATOR . 'conf.ini';
-        if (!is_file($this->_conf . '.bak') && is_file($this->_conf))
-            rename($this->_conf, $this->_conf . '.bak');
+        helper::confBackup();
 
         $this->_model = zerobin_data::getInstance(array('dir' => PATH . 'data'));
         serversalt::setPath(PATH . 'data');
@@ -612,7 +610,7 @@ class configurationTest extends PHPUnit_Framework_TestCase
     public function tearDown()
     {
         /* Tear Down Routine */
-        rename($this->_conf . '.bak', $this->_conf);
+        helper::confRestore();
 }
 
     public function reset($configuration = array())
@@ -622,7 +620,7 @@ class configurationTest extends PHPUnit_Framework_TestCase
         $_SERVER = array();
         if ($this->_model->exists(helper::getPasteId()))
             $this->_model->delete(helper::getPasteId());
-        helper::createIniFile($this->_conf, $configuration);
+        helper::createIniFile(CONF, $configuration);
     }
 
 
diff --git a/tst/zerobin.php b/tst/zerobin.php
index f3283ed..4a11ac7 100644
--- a/tst/zerobin.php
+++ b/tst/zerobin.php
@@ -1,8 +1,6 @@
 <?php
 class zerobinTest extends PHPUnit_Framework_TestCase
 {
-    private $_conf;
-
     private $_model;
 
     public function setUp()
@@ -10,7 +8,6 @@ class zerobinTest extends PHPUnit_Framework_TestCase
         /* Setup Routine */
         $this->_model = zerobin_data::getInstance(array('dir' => PATH . 'data'));
         serversalt::setPath(PATH . 'data');
-        $this->_conf = PATH . 'cfg' . DIRECTORY_SEPARATOR . 'conf.ini';
         $this->reset();
     }
 
@@ -26,8 +23,7 @@ class zerobinTest extends PHPUnit_Framework_TestCase
         $_SERVER = array();
         if ($this->_model->exists(helper::getPasteId()))
             $this->_model->delete(helper::getPasteId());
-        if (is_file($this->_conf . '.bak'))
-            rename($this->_conf . '.bak', $this->_conf);
+        helper::confRestore();
     }
 
     /**
@@ -55,11 +51,10 @@ class zerobinTest extends PHPUnit_Framework_TestCase
     public function testViewLanguageSelection()
     {
         $this->reset();
-        $options = parse_ini_file($this->_conf, true);
+        $options = parse_ini_file(CONF, true);
         $options['main']['languageselection'] = true;
-        if (!is_file($this->_conf . '.bak') && is_file($this->_conf))
-            rename($this->_conf, $this->_conf . '.bak');
-        helper::createIniFile($this->_conf, $options);
+        helper::confBackup();
+        helper::createIniFile(CONF, $options);
         $_COOKIE['lang'] = 'de';
         ob_start();
         new zerobin;
@@ -104,9 +99,8 @@ class zerobinTest extends PHPUnit_Framework_TestCase
     public function testConf()
     {
         $this->reset();
-        if (!is_file($this->_conf . '.bak') && is_file($this->_conf))
-            rename($this->_conf, $this->_conf . '.bak');
-        file_put_contents($this->_conf, '');
+        helper::confBackup();
+        file_put_contents(CONF, '');
         ob_start();
         new zerobin;
         $content = ob_get_contents();
@@ -155,12 +149,11 @@ class zerobinTest extends PHPUnit_Framework_TestCase
     public function testCreateInvalidSize()
     {
         $this->reset();
-        $options = parse_ini_file($this->_conf, true);
+        $options = parse_ini_file(CONF, true);
         $options['main']['sizelimit'] = 10;
         $options['traffic']['limit'] = 0;
-        if (!is_file($this->_conf . '.bak') && is_file($this->_conf))
-            rename($this->_conf, $this->_conf . '.bak');
-        helper::createIniFile($this->_conf, $options);
+        helper::confBackup();
+        helper::createIniFile(CONF, $options);
         $_POST = helper::getPaste();
         $_SERVER['REMOTE_ADDR'] = '::1';
         ob_start();
@@ -177,11 +170,10 @@ class zerobinTest extends PHPUnit_Framework_TestCase
     public function testCreateProxyHeader()
     {
         $this->reset();
-        $options = parse_ini_file($this->_conf, true);
+        $options = parse_ini_file(CONF, true);
         $options['traffic']['header'] = 'X_FORWARDED_FOR';
-        if (!is_file($this->_conf . '.bak') && is_file($this->_conf))
-            rename($this->_conf, $this->_conf . '.bak');
-        helper::createIniFile($this->_conf, $options);
+        helper::confBackup();
+        helper::createIniFile(CONF, $options);
         $_POST = helper::getPaste();
         $_SERVER['HTTP_X_FORWARDED_FOR'] = '::1';
         ob_start();
@@ -198,11 +190,10 @@ class zerobinTest extends PHPUnit_Framework_TestCase
     public function testCreateDuplicateId()
     {
         $this->reset();
-        $options = parse_ini_file($this->_conf, true);
+        $options = parse_ini_file(CONF, true);
         $options['traffic']['limit'] = 0;
-        if (!is_file($this->_conf . '.bak') && is_file($this->_conf))
-            rename($this->_conf, $this->_conf . '.bak');
-        helper::createIniFile($this->_conf, $options);
+        helper::confBackup();
+        helper::createIniFile(CONF, $options);
         $this->_model->create(helper::getPasteId(), helper::getPaste());
         $_POST = helper::getPaste();
         $_SERVER['REMOTE_ADDR'] = '::1';
@@ -220,11 +211,10 @@ class zerobinTest extends PHPUnit_Framework_TestCase
     public function testCreateValidExpire()
     {
         $this->reset();
-        $options = parse_ini_file($this->_conf, true);
+        $options = parse_ini_file(CONF, true);
         $options['traffic']['limit'] = 0;
-        if (!is_file($this->_conf . '.bak') && is_file($this->_conf))
-            rename($this->_conf, $this->_conf . '.bak');
-        helper::createIniFile($this->_conf, $options);
+        helper::confBackup();
+        helper::createIniFile(CONF, $options);
         $_POST = helper::getPaste();
         $_POST['expire'] = '5min';
         $_POST['formatter'] = 'foo';
@@ -248,11 +238,10 @@ class zerobinTest extends PHPUnit_Framework_TestCase
     public function testCreateInvalidExpire()
     {
         $this->reset();
-        $options = parse_ini_file($this->_conf, true);
+        $options = parse_ini_file(CONF, true);
         $options['traffic']['limit'] = 0;
-        if (!is_file($this->_conf . '.bak') && is_file($this->_conf))
-            rename($this->_conf, $this->_conf . '.bak');
-        helper::createIniFile($this->_conf, $options);
+        helper::confBackup();
+        helper::createIniFile(CONF, $options);
         $_POST = helper::getPaste();
         $_POST['expire'] = 'foo';
         $_SERVER['REMOTE_ADDR'] = '::1';
@@ -275,11 +264,10 @@ class zerobinTest extends PHPUnit_Framework_TestCase
     public function testCreateInvalidBurn()
     {
         $this->reset();
-        $options = parse_ini_file($this->_conf, true);
+        $options = parse_ini_file(CONF, true);
         $options['traffic']['limit'] = 0;
-        if (!is_file($this->_conf . '.bak') && is_file($this->_conf))
-            rename($this->_conf, $this->_conf . '.bak');
-        helper::createIniFile($this->_conf, $options);
+        helper::confBackup();
+        helper::createIniFile(CONF, $options);
         $_POST = helper::getPaste();
         $_POST['burnafterreading'] = 'neither 1 nor 0';
         $_SERVER['REMOTE_ADDR'] = '::1';
@@ -297,11 +285,10 @@ class zerobinTest extends PHPUnit_Framework_TestCase
     public function testCreateInvalidOpenDiscussion()
     {
         $this->reset();
-        $options = parse_ini_file($this->_conf, true);
+        $options = parse_ini_file(CONF, true);
         $options['traffic']['limit'] = 0;
-        if (!is_file($this->_conf . '.bak') && is_file($this->_conf))
-            rename($this->_conf, $this->_conf . '.bak');
-        helper::createIniFile($this->_conf, $options);
+        helper::confBackup();
+        helper::createIniFile(CONF, $options);
         $_POST = helper::getPaste();
         $_POST['opendiscussion'] = 'neither 1 nor 0';
         $_SERVER['REMOTE_ADDR'] = '::1';
@@ -319,13 +306,14 @@ class zerobinTest extends PHPUnit_Framework_TestCase
     public function testCreateAttachment()
     {
         $this->reset();
-        $options = parse_ini_file($this->_conf, true);
+        $options = parse_ini_file(CONF, true);
         $options['traffic']['limit'] = 0;
         $options['main']['fileupload'] = true;
-        if (!is_file($this->_conf . '.bak') && is_file($this->_conf))
-            rename($this->_conf, $this->_conf . '.bak');
-        helper::createIniFile($this->_conf, $options);
+        helper::confBackup();
+        helper::createIniFile(CONF, $options);
         $_POST = helper::getPaste();
+        $_POST['attachment'] = $_POST['meta']['attachment'];
+        $_POST['attachmentname'] = $_POST['meta']['attachmentname'];
         $_SERVER['REMOTE_ADDR'] = '::1';
         ob_start();
         new zerobin;
@@ -346,11 +334,10 @@ class zerobinTest extends PHPUnit_Framework_TestCase
     public function testCreateValidNick()
     {
         $this->reset();
-        $options = parse_ini_file($this->_conf, true);
+        $options = parse_ini_file(CONF, true);
         $options['traffic']['limit'] = 0;
-        if (!is_file($this->_conf . '.bak') && is_file($this->_conf))
-            rename($this->_conf, $this->_conf . '.bak');
-        helper::createIniFile($this->_conf, $options);
+        helper::confBackup();
+        helper::createIniFile(CONF, $options);
         $_POST = helper::getPaste();
         $_POST['nickname'] = helper::getComment()['meta']['nickname'];
         $_SERVER['REMOTE_ADDR'] = '::1';
@@ -373,11 +360,10 @@ class zerobinTest extends PHPUnit_Framework_TestCase
     public function testCreateInvalidNick()
     {
         $this->reset();
-        $options = parse_ini_file($this->_conf, true);
+        $options = parse_ini_file(CONF, true);
         $options['traffic']['limit'] = 0;
-        if (!is_file($this->_conf . '.bak') && is_file($this->_conf))
-            rename($this->_conf, $this->_conf . '.bak');
-        helper::createIniFile($this->_conf, $options);
+        helper::confBackup();
+        helper::createIniFile(CONF, $options);
         $_POST = helper::getPaste();
         $_POST['nickname'] = 'foo';
         $_SERVER['REMOTE_ADDR'] = '::1';
@@ -395,11 +381,10 @@ class zerobinTest extends PHPUnit_Framework_TestCase
     public function testCreateComment()
     {
         $this->reset();
-        $options = parse_ini_file($this->_conf, true);
+        $options = parse_ini_file(CONF, true);
         $options['traffic']['limit'] = 0;
-        if (!is_file($this->_conf . '.bak') && is_file($this->_conf))
-            rename($this->_conf, $this->_conf . '.bak');
-        helper::createIniFile($this->_conf, $options);
+        helper::confBackup();
+        helper::createIniFile(CONF, $options);
         $_POST = helper::getComment();
         $_POST['pasteid'] = helper::getPasteId();
         $_POST['parentid'] = helper::getPasteId();
@@ -419,11 +404,10 @@ class zerobinTest extends PHPUnit_Framework_TestCase
     public function testCreateInvalidComment()
     {
         $this->reset();
-        $options = parse_ini_file($this->_conf, true);
+        $options = parse_ini_file(CONF, true);
         $options['traffic']['limit'] = 0;
-        if (!is_file($this->_conf . '.bak') && is_file($this->_conf))
-            rename($this->_conf, $this->_conf . '.bak');
-        helper::createIniFile($this->_conf, $options);
+        helper::confBackup();
+        helper::createIniFile(CONF, $options);
         $_POST = helper::getComment();
         $_POST['pasteid'] = helper::getPasteId();
         $_POST['parentid'] = 'foo';
@@ -443,11 +427,10 @@ class zerobinTest extends PHPUnit_Framework_TestCase
     public function testCreateCommentDiscussionDisabled()
     {
         $this->reset();
-        $options = parse_ini_file($this->_conf, true);
+        $options = parse_ini_file(CONF, true);
         $options['traffic']['limit'] = 0;
-        if (!is_file($this->_conf . '.bak') && is_file($this->_conf))
-            rename($this->_conf, $this->_conf . '.bak');
-        helper::createIniFile($this->_conf, $options);
+        helper::confBackup();
+        helper::createIniFile(CONF, $options);
         $_POST = helper::getComment();
         $_POST['pasteid'] = helper::getPasteId();
         $_POST['parentid'] = helper::getPasteId();
@@ -468,11 +451,10 @@ class zerobinTest extends PHPUnit_Framework_TestCase
     public function testCreateCommentInvalidPaste()
     {
         $this->reset();
-        $options = parse_ini_file($this->_conf, true);
+        $options = parse_ini_file(CONF, true);
         $options['traffic']['limit'] = 0;
-        if (!is_file($this->_conf . '.bak') && is_file($this->_conf))
-            rename($this->_conf, $this->_conf . '.bak');
-        helper::createIniFile($this->_conf, $options);
+        helper::confBackup();
+        helper::createIniFile(CONF, $options);
         $_POST = helper::getComment();
         $_POST['pasteid'] = helper::getPasteId();
         $_POST['parentid'] = helper::getPasteId();
@@ -491,11 +473,10 @@ class zerobinTest extends PHPUnit_Framework_TestCase
     public function testCreateDuplicateComment()
     {
         $this->reset();
-        $options = parse_ini_file($this->_conf, true);
+        $options = parse_ini_file(CONF, true);
         $options['traffic']['limit'] = 0;
-        if (!is_file($this->_conf . '.bak') && is_file($this->_conf))
-            rename($this->_conf, $this->_conf . '.bak');
-        helper::createIniFile($this->_conf, $options);
+        helper::confBackup();
+        helper::createIniFile(CONF, $options);
         $this->_model->create(helper::getPasteId(), helper::getPaste());
         $this->_model->createComment(helper::getPasteId(), helper::getPasteId(), helper::getCommentId(), helper::getComment());
         $this->assertTrue($this->_model->existsComment(helper::getPasteId(), helper::getPasteId(), helper::getCommentId()), 'comment exists before posting data');