bin/administration
#!/usr/bin/env php
<?php
/**
* PrivateBin
*
* a zero-knowledge paste bin
*
* @link https://github.com/PrivateBin/PrivateBin
* @copyright 2012 Sébastien SAUVAGE (sebsauvage.net)
* @license https://www.opensource.org/licenses/zlib-license.php The zlib/libpng License
* @version 1.7.1
*/
namespace PrivateBin;
use Exception;
use PrivateBin\Configuration;
use PrivateBin\Data\AbstractData;
use PrivateBin\Model\Paste;
define('PATH', dirname(__FILE__) . DIRECTORY_SEPARATOR . '..' . DIRECTORY_SEPARATOR);
require PATH . 'vendor' . DIRECTORY_SEPARATOR . 'autoload.php';
/**
* Administration
*
* Command line utility for administrative tasks.
*/
class Administration
{
/**
* configuration
*
* @access private
* @var Configuration
*/
private $_conf;
/**
* options, parsed from the command line arguments
*
* @access private
* @var array
*/
private $_opts = array();
/**
* data storage model
*
* @access private
* @var AbstractData
*/
private $_store;
/**
* deletes the requested paste ID, if a valid ID and it exists
*
* @access private
* @param string $pasteId
*/
private function _delete($pasteId)
{
if (!Paste::isValidId($pasteId)) {
self::_error('given ID is not a valid paste ID (16 hexadecimal digits)', 5);
}
if (!$this->_store->exists($pasteId)) {
self::_error('given ID does not exist, has expired or was already deleted', 6);
}
$this->_store->delete($pasteId);
if ($this->_store->exists($pasteId)) {
self::_error('paste ID exists after deletion, permission problem?', 7);
}
exit("paste $pasteId successfully deleted" . PHP_EOL);
}
/**
* removes empty directories, if current storage model uses Filesystem
*
* @access private
*/
private function _empty_dirs()
{
if ($this->_conf->getKey('class', 'model') !== 'Filesystem') {
self::_error('instance not using Filesystem storage, no directories to empty', 4);
}
$dir = $this->_conf->getKey('dir', 'model_options');
passthru("find $dir -type d -empty -delete", $code);
exit($code);
}
/**
* display a message on STDERR and exits
*
* @access private
* @static
* @param string $message
* @param int $code optional, defaults to 1
*/
private static function _error($message, $code = 1)
{
self::_error_echo($message);
exit($code);
}
/**
* display a message on STDERR
*
* @access private
* @static
* @param string $message
*/
private static function _error_echo($message)
{
fwrite(STDERR, 'Error: ' . $message . PHP_EOL);
}
/**
* display usage help on STDOUT and exits
*
* @access private
* @static
* @param int $code optional, defaults to 0
*/
private static function _help($code = 0)
{
echo <<<'EOT'
Usage:
administration [--delete <paste id> | --empty-dirs | --help | --purge | --statistics]
Options:
-d, --delete deletes the requested paste ID
-e, --empty-dirs removes empty directories (only if Filesystem storage is
configured)
-h, --help displays this help message
-p, --purge purge all expired pastes
-s, --statistics reads all stored pastes and comments and reports statistics
EOT, PHP_EOL;
exit($code);
}
/**
* return option for given short or long keyname, if it got set
*
* @access private
* @static
* @param string $short
* @param string $long
* @return string|null
*/
private function _option($short, $long)
{
foreach (array($short, $long) as $key) {
if (array_key_exists($key, $this->_opts)) {
return $this->_opts[$key];
}
}
return null;
}
/**
* initialize options from given argument array
*
* @access private
* @static
* @param array $arguments
*/
private function _options_initialize($arguments)
{
if ($arguments > 3) {
self::_error_echo('too many arguments given');
echo PHP_EOL;
self::_help(1);
}
if ($arguments < 2) {
self::_error_echo('missing arguments');
echo PHP_EOL;
self::_help(2);
}
$this->_opts = getopt('hd:eps', array('help', 'delete:', 'empty-dirs', 'purge', 'statistics'));
if (!$this->_opts) {
self::_error_echo('unsupported arguments given');
echo PHP_EOL;
self::_help(3);
}
}
/**
* reads all stored pastes and comments and reports statistics
*
* @access public
*/
private function _statistics()
{
$counters = array(
'burn' => 0,
'damaged' => 0,
'discussion' => 0,
'expired' => 0,
'md' => 0,
'percent' => 1,
'plain' => 0,
'progress' => 0,
'syntax' => 0,
'total' => 0,
'unknown' => 0,
);
$time = time();
$ids = $this->_store->getAllPastes();
$counters['total'] = count($ids);
$dots = $counters['total'] < 100 ? 10 : (
$counters['total'] < 1000 ? 50 : 100
);
$percentages = $counters['total'] < 100 ? 0 : (
$counters['total'] < 1000 ? 4 : 10
);
echo "Total:\t\t\t{$counters['total']}", PHP_EOL;
foreach ($ids as $pasteid) {
try {
$paste = $this->_store->read($pasteid);
} catch (Exception $e) {
echo "Error reading paste {$pasteid}: ", $e->getMessage(), PHP_EOL;
++$counters['damaged'];
}
++$counters['progress'];
if (
array_key_exists('expire_date', $paste['meta']) &&
$paste['meta']['expire_date'] < $time
) {
++$counters['expired'];
}
if (array_key_exists('adata', $paste)) {
$format = $paste['adata'][1];
$discussion = $paste['adata'][2];
$burn = $paste['adata'][3];
} else {
$format = array_key_exists('formatter', $paste['meta']) ? $paste['meta']['formatter'] : 'plaintext';
$discussion = array_key_exists('opendiscussion', $paste['meta']) ? $paste['meta']['opendiscussion'] : false;
$burn = array_key_exists('burnafterreading', $paste['meta']) ? $paste['meta']['burnafterreading'] : false;
}
if ($format === 'plaintext') {
++$counters['plain'];
} elseif ($format === 'syntaxhighlighting') {
++$counters['syntax'];
} elseif ($format === 'markdown') {
++$counters['md'];
} else {
++$counters['unknown'];
}
$counters['discussion'] += (int) $discussion;
$counters['burn'] += (int) $burn;
// display progress
if ($counters['progress'] % $dots === 0) {
echo '.';
if ($percentages) {
$progress = $percentages / $counters['total'] * $counters['progress'];
if ($progress >= $counters['percent']) {
printf(' %d%% ', 100 / $percentages * $progress);
++$counters['percent'];
}
}
}
}
echo PHP_EOL, <<<EOT
Expired:\t\t{$counters['expired']}
Burn after reading:\t{$counters['burn']}
Discussions:\t\t{$counters['discussion']}
Plain Text:\t\t{$counters['plain']}
Source Code:\t\t{$counters['syntax']}
Markdown:\t\t{$counters['md']}
EOT, PHP_EOL;
if ($counters['damaged'] > 0) {
echo "Damaged:\t\t{$counters['damaged']}", PHP_EOL;
}
if ($counters['unknown'] > 0) {
echo "Unknown format:\t\t{$counters['unknown']}", PHP_EOL;
}
}
/**
* constructor
*
* initializes and runs administrative tasks
*
* @access public
*/
public function __construct()
{
$this->_options_initialize($_SERVER['argc']);
if ($this->_option('h', 'help') !== null) {
self::_help();
}
$this->_conf = new Configuration;
if ($this->_option('e', 'empty-dirs') !== null) {
$this->_empty_dirs();
}
$class = 'PrivateBin\\Data\\' . $this->_conf->getKey('class', 'model');
$this->_store = new $class($this->_conf->getSection('model_options'));
if (($pasteId = $this->_option('d', 'delete')) !== null) {
$this->_delete($pasteId);
}
if ($this->_option('p', 'purge') !== null) {
try {
$this->_store->purge(PHP_INT_MAX);
} catch (Exception $e) {
echo 'Error purging pastes: ', $e->getMessage(), PHP_EOL,
'Run the statistics to find damaged paste IDs and either delete them or restore them from backup.', PHP_EOL;
}
exit('purging of expired pastes concluded' . PHP_EOL);
}
if ($this->_option('s', 'statistics') !== null) {
$this->_statistics();
}
}
}
new Administration();