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<?php
namespace League\Flysystem\Adapter;
use DateTime;
use League\Flysystem\AdapterInterface;
use League\Flysystem\Config;
use League\Flysystem\NotSupportedException;
use League\Flysystem\SafeStorage;
use RuntimeException;
abstract class AbstractFtpAdapter extends AbstractAdapter
{
/**
* @var mixed
*/
protected $connection;
/**
* @var string
*/
protected $host;
/**
* @var int
*/
protected $port = 21;
/**
* @var bool
*/
protected $ssl = false;
/**
* @var int
*/
protected $timeout = 90;
/**
* @var bool
*/
protected $passive = true;
/**
* @var string
*/
protected $separator = '/';
/**
* @var string|null
*/
protected $root;
/**
* @var int
*/
protected $permPublic = 0744;
/**
* @var int
*/
protected $permPrivate = 0700;
/**
* @var array
*/
protected $configurable = [];
/**
* @var string
*/
protected $systemType;
/**
* @var SafeStorage
*/
protected $safeStorage;
/**
* True to enable timestamps for FTP servers that return unix-style listings.
*
* @var bool
*/
protected $enableTimestampsOnUnixListings = false;
/**
* Constructor.
*
* @param array $config
*/
public function __construct(array $config)
{
$this->safeStorage = new SafeStorage();
$this->setConfig($config);
}
/**
* Set the config.
*
* @param array $config
*
* @return $this
*/
public function setConfig(array $config)
{
foreach ($this->configurable as $setting) {
if ( ! isset($config[$setting])) {
continue;
}
$method = 'set' . ucfirst($setting);
if (method_exists($this, $method)) {
$this->$method($config[$setting]);
}
}
return $this;
}
/**
* Returns the host.
*
* @return string
*/
public function getHost()
{
return $this->host;
}
/**
* Set the host.
*
* @param string $host
*
* @return $this
*/
public function setHost($host)
{
$this->host = $host;
return $this;
}
/**
* Set the public permission value.
*
* @param int $permPublic
*
* @return $this
*/
public function setPermPublic($permPublic)
{
$this->permPublic = $permPublic;
return $this;
}
/**
* Set the private permission value.
*
* @param int $permPrivate
*
* @return $this
*/
public function setPermPrivate($permPrivate)
{
$this->permPrivate = $permPrivate;
return $this;
}
/**
* Returns the ftp port.
*
* @return int
*/
public function getPort()
{
return $this->port;
}
/**
* Returns the root folder to work from.
*
* @return string
*/
public function getRoot()
{
return $this->root;
}
/**
* Set the ftp port.
*
* @param int|string $port
*
* @return $this
*/
public function setPort($port)
{
$this->port = (int) $port;
return $this;
}
/**
* Set the root folder to work from.
*
* @param string $root
*
* @return $this
*/
public function setRoot($root)
{
$this->root = rtrim($root, '\\/') . $this->separator;
return $this;
}
/**
* Returns the ftp username.
*
* @return string username
*/
public function getUsername()
{
$username = $this->safeStorage->retrieveSafely('username');
return $username !== null ? $username : 'anonymous';
}
/**
* Set ftp username.
*
* @param string $username
*
* @return $this
*/
public function setUsername($username)
{
$this->safeStorage->storeSafely('username', $username);
return $this;
}
/**
* Returns the password.
*
* @return string password
*/
public function getPassword()
{
return $this->safeStorage->retrieveSafely('password');
}
/**
* Set the ftp password.
*
* @param string $password
*
* @return $this
*/
public function setPassword($password)
{
$this->safeStorage->storeSafely('password', $password);
return $this;
}
/**
* Returns the amount of seconds before the connection will timeout.
*
* @return int
*/
public function getTimeout()
{
return $this->timeout;
}
/**
* Set the amount of seconds before the connection should timeout.
*
* @param int $timeout
*
* @return $this
*/
public function setTimeout($timeout)
{
$this->timeout = (int) $timeout;
return $this;
}
/**
* Return the FTP system type.
*
* @return string
*/
public function getSystemType()
{
return $this->systemType;
}
/**
* Set the FTP system type (windows or unix).
*
* @param string $systemType
*
* @return $this
*/
public function setSystemType($systemType)
{
$this->systemType = strtolower($systemType);
return $this;
}
/**
* True to enable timestamps for FTP servers that return unix-style listings.
*
* @param bool $bool
*
* @return $this
*/
public function setEnableTimestampsOnUnixListings($bool = false)
{
$this->enableTimestampsOnUnixListings = $bool;
return $this;
}
/**
* @inheritdoc
*/
public function listContents($directory = '', $recursive = false)
{
return $this->listDirectoryContents($directory, $recursive);
}
abstract protected function listDirectoryContents($directory, $recursive = false);
/**
* Normalize a directory listing.
*
* @param array $listing
* @param string $prefix
*
* @return array directory listing
*/
protected function normalizeListing(array $listing, $prefix = '')
{
$base = $prefix;
$result = [];
$listing = $this->removeDotDirectories($listing);
while ($item = array_shift($listing)) {
if (preg_match('#^.*:$#', $item)) {
$base = preg_replace('~^\./*|:$~', '', $item);
continue;
}
$result[] = $this->normalizeObject($item, $base);
}
return $this->sortListing($result);
}
/**
* Sort a directory listing.
*
* @param array $result
*
* @return array sorted listing
*/
protected function sortListing(array $result)
{
$compare = function ($one, $two) {
return strnatcmp($one['path'], $two['path']);
};
usort($result, $compare);
return $result;
}
/**
* Normalize a file entry.
*
* @param string $item
* @param string $base
*
* @return array normalized file array
*
* @throws NotSupportedException
*/
protected function normalizeObject($item, $base)
{
$systemType = $this->systemType ?: $this->detectSystemType($item);
if ($systemType === 'unix') {
return $this->normalizeUnixObject($item, $base);
} elseif ($systemType === 'windows') {
return $this->normalizeWindowsObject($item, $base);
}
throw NotSupportedException::forFtpSystemType($systemType);
}
/**
* Normalize a Unix file entry.
*
* Given $item contains:
* '-rw-r--r-- 1 ftp ftp 409 Aug 19 09:01 file1.txt'
*
* This function will return:
* [
* 'type' => 'file',
* 'path' => 'file1.txt',
* 'visibility' => 'public',
* 'size' => 409,
* 'timestamp' => 1566205260
* ]
*
* @param string $item
* @param string $base
*
* @return array normalized file array
*/
protected function normalizeUnixObject($item, $base)
{
$item = preg_replace('#\s+#', ' ', trim($item), 7);
if (count(explode(' ', $item, 9)) !== 9) {
throw new RuntimeException("Metadata can't be parsed from item '$item' , not enough parts.");
}
list($permissions, /* $number */, /* $owner */, /* $group */, $size, $month, $day, $timeOrYear, $name) = explode(' ', $item, 9);
$type = $this->detectType($permissions);
$path = $base === '' ? $name : $base . $this->separator . $name;
if ($type === 'dir') {
$result = compact('type', 'path');
if ($this->enableTimestampsOnUnixListings) {
$timestamp = $this->normalizeUnixTimestamp($month, $day, $timeOrYear);
$result += compact('timestamp');
}
return $result;
}
$permissions = $this->normalizePermissions($permissions);
$visibility = $permissions & 0044 ? AdapterInterface::VISIBILITY_PUBLIC : AdapterInterface::VISIBILITY_PRIVATE;
$size = (int) $size;
$result = compact('type', 'path', 'visibility', 'size');
if ($this->enableTimestampsOnUnixListings) {
$timestamp = $this->normalizeUnixTimestamp($month, $day, $timeOrYear);
$result += compact('timestamp');
}
return $result;
}
/**
* Only accurate to the minute (current year), or to the day.
*
* Inadequacies in timestamp accuracy are due to limitations of the FTP 'LIST' command
*
* Note: The 'MLSD' command is a machine-readable replacement for 'LIST'
* but many FTP servers do not support it :(
*
* @param string $month e.g. 'Aug'
* @param string $day e.g. '19'
* @param string $timeOrYear e.g. '09:01' OR '2015'
*
* @return int
*/
protected function normalizeUnixTimestamp($month, $day, $timeOrYear)
{
if (is_numeric($timeOrYear)) {
$year = $timeOrYear;
$hour = '00';
$minute = '00';
$seconds = '00';
} else {
$year = date('Y');
list($hour, $minute) = explode(':', $timeOrYear);
$seconds = '00';
}
$dateTime = DateTime::createFromFormat('Y-M-j-G:i:s', "{$year}-{$month}-{$day}-{$hour}:{$minute}:{$seconds}");
return $dateTime->getTimestamp();
}
/**
* Normalize a Windows/DOS file entry.
*
* @param string $item
* @param string $base
*
* @return array normalized file array
*/
protected function normalizeWindowsObject($item, $base)
{
$item = preg_replace('#\s+#', ' ', trim($item), 3);
if (count(explode(' ', $item, 4)) !== 4) {
throw new RuntimeException("Metadata can't be parsed from item '$item' , not enough parts.");
}
list($date, $time, $size, $name) = explode(' ', $item, 4);
$path = $base === '' ? $name : $base . $this->separator . $name;
// Check for the correct date/time format
$format = strlen($date) === 8 ? 'm-d-yH:iA' : 'Y-m-dH:i';
$dt = DateTime::createFromFormat($format, $date . $time);
$timestamp = $dt ? $dt->getTimestamp() : (int) strtotime("$date $time");
if ($size === '<DIR>') {
$type = 'dir';
return compact('type', 'path', 'timestamp');
}
$type = 'file';
$visibility = AdapterInterface::VISIBILITY_PUBLIC;
$size = (int) $size;
return compact('type', 'path', 'visibility', 'size', 'timestamp');
}
/**
* Get the system type from a listing item.
*
* @param string $item
*
* @return string the system type
*/
protected function detectSystemType($item)
{
return preg_match('/^[0-9]{2,4}-[0-9]{2}-[0-9]{2}/', trim($item)) ? 'windows' : 'unix';
}
/**
* Get the file type from the permissions.
*
* @param string $permissions
*
* @return string file type
*/
protected function detectType($permissions)
{
return substr($permissions, 0, 1) === 'd' ? 'dir' : 'file';
}
/**
* Normalize a permissions string.
*
* @param string $permissions
*
* @return int
*/
protected function normalizePermissions($permissions)
{
if (is_numeric($permissions)) {
return ((int) $permissions) & 0777;
}
// remove the type identifier
$permissions = substr($permissions, 1);
// map the string rights to the numeric counterparts
$map = ['-' => '0', 'r' => '4', 'w' => '2', 'x' => '1'];
$permissions = strtr($permissions, $map);
// split up the permission groups
$parts = str_split($permissions, 3);
// convert the groups
$mapper = function ($part) {
return array_sum(str_split($part));
};
// converts to decimal number
return octdec(implode('', array_map($mapper, $parts)));
}
/**
* Filter out dot-directories.
*
* @param array $list
*
* @return array
*/
public function removeDotDirectories(array $list)
{
$filter = function ($line) {
return $line !== '' && ! preg_match('#.* \.(\.)?$|^total#', $line);
};
return array_filter($list, $filter);
}
/**
* @inheritdoc
*/
public function has($path)
{
return $this->getMetadata($path);
}
/**
* @inheritdoc
*/
public function getSize($path)
{
return $this->getMetadata($path);
}
/**
* @inheritdoc
*/
public function getVisibility($path)
{
return $this->getMetadata($path);
}
/**
* Ensure a directory exists.
*
* @param string $dirname
*/
public function ensureDirectory($dirname)
{
$dirname = (string) $dirname;
if ($dirname !== '' && ! $this->has($dirname)) {
$this->createDir($dirname, new Config());
}
}
/**
* @return mixed
*/
public function getConnection()
{
if ( ! $this->isConnected()) {
$this->disconnect();
$this->connect();
}
return $this->connection;
}
/**
* Get the public permission value.
*
* @return int
*/
public function getPermPublic()
{
return $this->permPublic;
}
/**
* Get the private permission value.
*
* @return int
*/
public function getPermPrivate()
{
return $this->permPrivate;
}
/**
* Disconnect on destruction.
*/
public function __destruct()
{
$this->disconnect();
}
/**
* Establish a connection.
*/
abstract public function connect();
/**
* Close the connection.
*/
abstract public function disconnect();
/**
* Check if a connection is active.
*
* @return bool
*/
abstract public function isConnected();
protected function escapePath($path)
{
return str_replace(['*', '[', ']'], ['\\*', '\\[', '\\]'], $path);
}
}
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