223 lines
7.8 KiB
PHP
223 lines
7.8 KiB
PHP
<?php
|
|
/**
|
|
* Shaarli (application) utilities
|
|
*/
|
|
class ApplicationUtils
|
|
{
|
|
/**
|
|
* @var string File containing the current version
|
|
*/
|
|
public static $VERSION_FILE = 'shaarli_version.php';
|
|
|
|
private static $GIT_URL = 'https://raw.githubusercontent.com/shaarli/Shaarli';
|
|
private static $GIT_BRANCHES = array('latest', 'stable');
|
|
private static $VERSION_START_TAG = '<?php /* ';
|
|
private static $VERSION_END_TAG = ' */ ?>';
|
|
|
|
/**
|
|
* Gets the latest version code from the Git repository
|
|
*
|
|
* The code is read from the raw content of the version file on the Git server.
|
|
*
|
|
* @param string $url URL to reach to get the latest version.
|
|
* @param int $timeout Timeout to check the URL (in seconds).
|
|
*
|
|
* @return mixed the version code from the repository if available, else 'false'
|
|
*/
|
|
public static function getLatestGitVersionCode($url, $timeout=2)
|
|
{
|
|
list($headers, $data) = get_http_response($url, $timeout);
|
|
|
|
if (strpos($headers[0], '200 OK') === false) {
|
|
error_log('Failed to retrieve ' . $url);
|
|
return false;
|
|
}
|
|
|
|
return $data;
|
|
}
|
|
|
|
/**
|
|
* Retrieve the version from a remote URL or a file.
|
|
*
|
|
* @param string $remote URL or file to fetch.
|
|
* @param int $timeout For URLs fetching.
|
|
*
|
|
* @return bool|string The version or false if it couldn't be retrieved.
|
|
*/
|
|
public static function getVersion($remote, $timeout = 2)
|
|
{
|
|
if (startsWith($remote, 'http')) {
|
|
if (($data = static::getLatestGitVersionCode($remote, $timeout)) === false) {
|
|
return false;
|
|
}
|
|
} else {
|
|
if (! is_file($remote)) {
|
|
return false;
|
|
}
|
|
$data = file_get_contents($remote);
|
|
}
|
|
|
|
return str_replace(
|
|
array(self::$VERSION_START_TAG, self::$VERSION_END_TAG, PHP_EOL),
|
|
array('', '', ''),
|
|
$data
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Checks if a new Shaarli version has been published on the Git repository
|
|
*
|
|
* Updates checks are run periodically, according to the following criteria:
|
|
* - the update checks are enabled (install, global config);
|
|
* - the user is logged in (or this is an open instance);
|
|
* - the last check is older than a given interval;
|
|
* - the check is non-blocking if the HTTPS connection to Git fails;
|
|
* - in case of failure, the update file's modification date is updated,
|
|
* to avoid intempestive connection attempts.
|
|
*
|
|
* @param string $currentVersion the current version code
|
|
* @param string $updateFile the file where to store the latest version code
|
|
* @param int $checkInterval the minimum interval between update checks (in seconds
|
|
* @param bool $enableCheck whether to check for new versions
|
|
* @param bool $isLoggedIn whether the user is logged in
|
|
* @param string $branch check update for the given branch
|
|
*
|
|
* @throws Exception an invalid branch has been set for update checks
|
|
*
|
|
* @return mixed the new version code if available and greater, else 'false'
|
|
*/
|
|
public static function checkUpdate($currentVersion,
|
|
$updateFile,
|
|
$checkInterval,
|
|
$enableCheck,
|
|
$isLoggedIn,
|
|
$branch='stable')
|
|
{
|
|
// Do not check versions for visitors
|
|
// Do not check if the user doesn't want to
|
|
// Do not check with dev version
|
|
if (! $isLoggedIn || empty($enableCheck) || $currentVersion === 'dev') {
|
|
return false;
|
|
}
|
|
|
|
if (is_file($updateFile) && (filemtime($updateFile) > time() - $checkInterval)) {
|
|
// Shaarli has checked for updates recently - skip HTTP query
|
|
$latestKnownVersion = file_get_contents($updateFile);
|
|
|
|
if (version_compare($latestKnownVersion, $currentVersion) == 1) {
|
|
return $latestKnownVersion;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
if (! in_array($branch, self::$GIT_BRANCHES)) {
|
|
throw new Exception(
|
|
'Invalid branch selected for updates: "' . $branch . '"'
|
|
);
|
|
}
|
|
|
|
// Late Static Binding allows overriding within tests
|
|
// See http://php.net/manual/en/language.oop5.late-static-bindings.php
|
|
$latestVersion = static::getVersion(
|
|
self::$GIT_URL . '/' . $branch . '/' . self::$VERSION_FILE
|
|
);
|
|
|
|
if (! $latestVersion) {
|
|
// Only update the file's modification date
|
|
file_put_contents($updateFile, $currentVersion);
|
|
return false;
|
|
}
|
|
|
|
// Update the file's content and modification date
|
|
file_put_contents($updateFile, $latestVersion);
|
|
|
|
if (version_compare($latestVersion, $currentVersion) == 1) {
|
|
return $latestVersion;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* 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 ConfigManager $conf Configuration Manager instance.
|
|
*
|
|
* @return array A list of the detected configuration issues
|
|
*/
|
|
public static function checkResourcePermissions($conf)
|
|
{
|
|
$errors = array();
|
|
|
|
// Check script and template directories are readable
|
|
foreach (array(
|
|
'application',
|
|
'inc',
|
|
'plugins',
|
|
$conf->get('resource.raintpl_tpl'),
|
|
$conf->get('resource.raintpl_tpl').'/'.$conf->get('resource.theme'),
|
|
) as $path) {
|
|
if (! is_readable(realpath($path))) {
|
|
$errors[] = '"'.$path.'" directory is not readable';
|
|
}
|
|
}
|
|
|
|
// Check cache and data directories are readable and writable
|
|
foreach (array(
|
|
$conf->get('resource.thumbnails_cache'),
|
|
$conf->get('resource.data_dir'),
|
|
$conf->get('resource.page_cache'),
|
|
$conf->get('resource.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 writable
|
|
foreach (array(
|
|
$conf->getConfigFileExt(),
|
|
$conf->get('resource.datastore'),
|
|
$conf->get('resource.ban_file'),
|
|
$conf->get('resource.log'),
|
|
$conf->get('resource.update_check'),
|
|
) 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;
|
|
}
|
|
}
|