/**
* Run cron tasks. This is a simple implementation without
* any bells and whistles.
*
* @static
* @return void
*/
public static function run()
{
// We run the cron tasks once every 5 minutes
Cache::remember('site.cron', 5, function () {
$expired = array();
$storage = storage_path();
// Retrieve expired pastes
$pastes = Paste::where('expire', '>', 0)->where('expire', '<', time())->get();
if ($pastes->count() > 0) {
// Check if the comments table exists
$hasComments = Schema::hasTable('comments');
// Build the expired pastes array
// Also delete associated comments and attachments
foreach ($pastes as $paste) {
$expired[] = $paste->urlkey;
$paste->comments()->delete();
$attachment = "{$storage}/uploads/{$paste->urlkey}";
if ($paste->attachment and File::exists($attachment)) {
File::delete($attachment);
}
}
// Remove expired pastes
Paste::whereIn('urlkey', $expired)->delete();
// Remove expired revisions
Revision::whereIn('urlkey', $expired)->delete();
}
// Delete paste statistics older than configured age
$ttl = Site::config('general')->statsTTL;
$date = date('Y-m-d', strtotime($ttl));
Statistics::where('date', '<', $date)->delete();
// Crun run successfully
return TRUE;
});
}
/**
* Return flags indicating whether each filter is
* enabled or disabled
*
* @static
* @return object
*/
public static function flags()
{
return Cache::rememberForever('antispam.flags', function () {
$flags = new stdClass();
$services = Antispam::services();
// Fetching all enabled filters. This value can be defined
// from the antispam screen in the admin panel
$enabled = preg_split('/\\||,/', Site::config('antispam')->services);
foreach ($services as $service) {
$flags->{$service} = in_array($service, $enabled);
}
return $flags;
});
}
/**
* Generates a navigation menu
*
* @access public
* @param string $menu
* @return string
*/
public static function menu($menu)
{
// Current path - will be used to highlight menu item
$path = Request::path();
// Current user ID for role based menus
$user = Auth::check() ? Auth::user()->id : 0;
// Get current project name
$project = System::project();
// Grab and parse all the menus
$group = Config::get("menus.{$menu}");
// The cache key is not only menu and path specific but also
// unique for a user and a project
$cacheKey = "site.menu.{$menu}.{$path}.{$user}.{$project}";
// Build the menu items. Items are cached for 60 minutes
$output = Cache::remember($cacheKey, 60, function () use($path, $user, $group) {
$output = NULL;
foreach ($group as $key => $item) {
if (!str_contains($key, '_')) {
$label = Lang::get($item['label']);
$current = FALSE;
// Check if visibility of the item is bound
if (isset($item['visible'])) {
$visible = FALSE;
$bindings = preg_split('/\\||,/', $item['visible']);
// Iterate through each binding
foreach ($bindings as $binding) {
$components = explode('.', $binding);
// Check for the invert flag
if (starts_with($components[0], '!')) {
$components[0] = substr($components[0], 1);
$invert = TRUE;
} else {
$invert = FALSE;
}
// Check for a value
if (str_contains($components[1], '=')) {
$expression = explode('=', $components[1]);
$components[1] = $expression[0];
$value = $expression[1];
} else {
$value = TRUE;
}
// Get the binding flags
switch ($components[0]) {
case 'role':
$flags = Auth::roles();
break;
case 'config':
$flags = Site::config('general');
break;
default:
$flags = NULL;
break;
}
// Do not parse the menu item if the flag does not
// evaluate to true
if (!is_null($flags)) {
$visible = ($visible or $flags->{$components}[1] == $value xor $invert);
}
}
// Set the visibility of the item
if (!$visible) {
continue;
}
}
// Determine whether this is the active link
if ($group['_exact'] and $key === $path) {
$current = TRUE;
} else {
if (!$group['_exact'] and starts_with($path, $key)) {
$current = TRUE;
}
}
// Highlight the active item
if ($current) {
$active = 'class="active"';
$href = '';
} else {
$active = '';
$href = 'href="' . url($key) . '"';
}
// Set the entry icon
if (isset($item['icon'])) {
$icon = View::make('common/icon', array('icon' => $item['icon']), FALSE);
} else {
$icon = NULL;
}
// Generate the item markup
$output .= "<li {$active}><a {$href}>{$icon} {$label}</a></li>";
}
}
// Add login/logout link if menu is set for that
if ($group['_showLogin']) {
if ($user) {
$label = Lang::get('global.logout');
$href = 'href="' . url('user/logout') . '"';
} else {
$label = Lang::get('global.login');
$href = 'href="' . url('user/login') . '"';
}
// Are we on the login screen?
$active = $path == 'user/login' ? 'class="active"' : '';
$icon = View::make('common/icon', array('icon' => 'user'), FALSE);
// Generate the markup
$output .= "<li {$active}><a {$href}>{$icon} {$label}</a></li>";
}
return $output;
});
return $output;
}
/**
* Processes AJAX requests for upgrades.
* The updater starts with the passed $version and goes on until the
* last one.
*
* The response is in the following format:
* <percent-complete>|<next-action>|<status-message>
*
* @static
* @param string $version
* @return string
*/
public static function update($action)
{
// Get the update versions and current scope
$versions = Config::get('schema.update');
$versionNames = array_keys($versions);
// Initialize everything
if (!Session::has('setup.updating')) {
Session::put('setup.updating', TRUE);
Session::forget('setup.messages');
return "5|{$action}|" . sprintf(Lang::get('setup.process_version'), $action);
} else {
if ($action == '~complete') {
// Set the final stage
Session::put('setup.stage', 3);
// Update the version number in the database
Site::config('general', array('version' => Config::get('app.version')));
// Flush the cache
Cache::flush();
// All done!
return "100||" . Lang::get('setup.update_complete');
} else {
if (array_key_exists($action, $versions)) {
try {
// In case the exception is not caught
static::setHandler('mainProcess');
// Scope is the current version being processed
$scope = $versions[$action];
// Create new tables
if (isset($scope['newTables'])) {
foreach ($scope['newTables'] as $tableName => $schema) {
// Drop the table
Schema::dropIfExists($tableName);
// Generate schema and create the table
Schema::create($tableName, function ($table) use($schema) {
Setup::schema($table, $schema);
});
}
}
// Update existing tables
if (isset($scope['modifyTables'])) {
foreach ($scope['modifyTables'] as $tableName => $schema) {
// Generate schema and modify the table
Schema::table($tableName, function ($table) use($schema) {
Setup::schema($table, $schema);
});
}
}
// Run the closure for this version
if (isset($scope['closure'])) {
call_user_func($scope['closure']);
}
// Output the next action in queue
return Setup::nextAction($action, $versionNames, 'setup.process_version');
} catch (Exception $e) {
Session::put('setup.error', $e->getMessage());
return '-1||' . Lang::get('setup.error_occurred');
}
}
}
}
}
/**
* Determines the installed state of the system
*
* @static
* @return bool
*/
public static function installed()
{
return Cache::rememberForever('site.installed', function () {
return Schema::hasTable('main');
});
}
/**
* Parses and outputs highlighted code
*
* @param string $key
* @param string $code
* @param string $language
* @return string
*/
public function parse($key, $code, $language)
{
$geshi = $this->geshi;
$parsed = Cache::remember("site.code.{$key}", 45000, function () use($geshi, $code, $language) {
$geshi->set_source($code);
$geshi->set_language($language);
return @$geshi->parse_code($code);
});
return $parsed ?: $code;
}
