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<?php
/**
* Shaarli (application) utilities
*/
class ApplicationUtils
{
/**
* Checks the PHP version to ensure Shaarli can run
*
* @param string $minVersion minimum PHP required version
* @param string $curVersion current PHP version (use PHP_VERSION)
*
* @throws Exception the PHP version is not supported
*/
public static function checkPHPVersion($minVersion, $curVersion)
{
if (version_compare($curVersion, $minVersion) < 0) {
throw new Exception(
'Your PHP version is obsolete!'
.' Shaarli requires at least PHP '.$minVersion.', and thus cannot run.'
.' Your PHP version has known security vulnerabilities and should be'
.' updated as soon as possible.'
);
}
}
/**
* Checks Shaarli has the proper access permissions to its resources
*
* @param array $globalConfig The $GLOBALS['config'] array
*
* @return array A list of the detected configuration issues
*/
public static function checkResourcePermissions($globalConfig)
{
$errors = array();
// Check script and template directories are readable
foreach (array(
'application',
'inc',
'plugins',
$globalConfig['RAINTPL_TPL']
) as $path) {
if (! is_readable(realpath($path))) {
$errors[] = '"'.$path.'" directory is not readable';
}
}
// Check cache and data directories are readable and writeable
foreach (array(
$globalConfig['CACHEDIR'],
$globalConfig['DATADIR'],
$globalConfig['PAGECACHE'],
$globalConfig['RAINTPL_TMP']
) as $path) {
if (! is_readable(realpath($path))) {
$errors[] = '"'.$path.'" directory is not readable';
}
if (! is_writable(realpath($path))) {
$errors[] = '"'.$path.'" directory is not writable';
}
}
// Check configuration files are readable and writeable
foreach (array(
$globalConfig['CONFIG_FILE'],
$globalConfig['DATASTORE'],
$globalConfig['IPBANS_FILENAME'],
$globalConfig['LOG_FILE'],
$globalConfig['UPDATECHECK_FILENAME']
) as $path) {
if (! is_file(realpath($path))) {
# the file may not exist yet
continue;
}
if (! is_readable(realpath($path))) {
$errors[] = '"'.$path.'" file is not readable';
}
if (! is_writable(realpath($path))) {
$errors[] = '"'.$path.'" file is not writable';
}
}
return $errors;
}
}
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