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<?php
/**
* SemanticScuttle - your social bookmark manager.
*
* PHP version 5.
*
* @category Bookmarking
* @package SemanticScuttle
* @author Christian Weiske <cweiske@cweiske.de>
* @license AGPL http://www.gnu.org/licenses/agpl.html
* @link http://sourceforge.net/projects/semanticscuttle
*/
/**
* Configuration handling
*
* @category Bookmarking
* @package SemanticScuttle
* @author Christian Weiske <cweiske@cweiske.de>
* @license AGPL http://www.gnu.org/licenses/agpl.html
* @link http://sourceforge.net/projects/semanticscuttle
*/
class SemanticScuttle_Config
{
/**
* Prefix for configuration files.
* Used to inject stream wrapper protocol for unit testing
*
* @var string
*/
public $filePrefix = '';
/**
* Finds the correct data directory
*
* @return string Full path to the data directory with a trailing slash
*/
protected function getDataDir()
{
if ('@data_dir@' == '@' . 'data_dir@') {
//non pear-install
$datadir = dirname(__FILE__) . '/../../data/';
} else {
//pear installation; files are in include path
$datadir = '@data_dir@/SemanticScuttle/';
}
return $datadir;
}
/**
* Tries to find a configuration file by looking in different
* places:
* - pear data_dir/SemanticScuttle/config-$hostname.php
* - pear data_dir/SemanticScuttle/config.php
* - /etc/semanticscuttle/config-$hostname.php
* - /etc/semanticscuttle/config.php
*
* Paths with host name have priority.
*
* When open_basedir restrictions are in effect and /etc is not part of
* the setting, /etc/semanticscuttle/ is not checked for config files.
*
* @return array Array with config file path as first value
* and default config file path as second value.
* Any may be NULL if not found
*/
public function findFiles()
{
//use basename to prevent path injection
$host = basename($_SERVER['HTTP_HOST']);
$datadir = $this->getDataDir();
$openbase = ini_get('open_basedir');
if ($openbase && strpos($openbase, '/etc') === false) {
//open_basedir restrictions enabled and /etc not allowed?
// then don't look in /etc for config files.
// the check is not perfect, but it covers most cases
$arFiles = array(
$datadir . 'config.' . $host . '.php',
$datadir . 'config.php',
);
} else {
$arFiles = array(
$datadir . 'config.' . $host . '.php',
'/etc/semanticscuttle/config.' . $host . '.php',
$datadir . 'config.php',
'/etc/semanticscuttle/config.php',
);
}
$configfile = null;
foreach ($arFiles as $file) {
if (file_exists($this->filePrefix . $file)) {
$configfile = $file;
break;
}
}
//find default file
$arDefaultFiles = array_unique(
array(
substr($configfile, 0, -3) . 'default.php',
$datadir . 'config.default.php',
'/etc/semanticscuttle/config.default.php',
)
);
$defaultfile = null;
foreach ($arDefaultFiles as $file) {
if (file_exists($this->filePrefix . $file)) {
$defaultfile = $file;
break;
}
}
return array($configfile, $defaultfile);
}
}
?>
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