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<?php
/**
*
* This file is part of the phpBB Forum Software package.
*
* @copyright (c) phpBB Limited <https://www.phpbb.com>
* @license GNU General Public License, version 2 (GPL-2.0)
*
* For full copyright and license information, please see
* the docs/CREDITS.txt file.
*
*/
namespace phpbb;
/**
* Class to handle version checking and comparison
*/
class version_helper
{
/**
* @var string Host
*/
protected $host = 'version.phpbb.com';
/**
* @var string Path to file
*/
protected $path = '/phpbb';
/**
* @var string File name
*/
protected $file = 'versions.json';
/**
* @var bool Use SSL or not
*/
protected $use_ssl = false;
/**
* @var string Current version installed
*/
protected $current_version;
/**
* @var null|string Null to not force stability, 'unstable' or 'stable' to
* force the corresponding stability
*/
protected $force_stability;
/** @var \phpbb\cache\service */
protected $cache;
/** @var \phpbb\config\config */
protected $config;
/** @var \phpbb\file_downloader */
protected $file_downloader;
/** @var \phpbb\user */
protected $user;
/**
* Constructor
*
* @param \phpbb\cache\service $cache
* @param \phpbb\config\config $config
* @param \phpbb\file_downloader $file_downloader
* @param \phpbb\user $user
*/
public function __construct(\phpbb\cache\service $cache, \phpbb\config\config $config, \phpbb\file_downloader $file_downloader, \phpbb\user $user)
{
$this->cache = $cache;
$this->config = $config;
$this->file_downloader = $file_downloader;
$this->user = $user;
if (defined('PHPBB_QA'))
{
$this->force_stability = 'unstable';
}
$this->current_version = $this->config['version'];
}
/**
* Set location to the file
*
* @param string $host Host (e.g. version.phpbb.com)
* @param string $path Path to file (e.g. /phpbb)
* @param string $file File name (Default: versions.json)
* @param bool $use_ssl Use SSL or not (Default: false)
* @return version_helper
*/
public function set_file_location($host, $path, $file = 'versions.json', $use_ssl = false)
{
$this->host = $host;
$this->path = $path;
$this->file = $file;
$this->use_ssl = $use_ssl;
return $this;
}
/**
* Set current version
*
* @param string $version The current version
* @return version_helper
*/
public function set_current_version($version)
{
$this->current_version = $version;
return $this;
}
/**
* Over-ride the stability to force check to include unstable versions
*
* @param null|string Null to not force stability, 'unstable' or 'stable' to
* force the corresponding stability
* @return version_helper
*/
public function force_stability($stability)
{
$this->force_stability = $stability;
return $this;
}
/**
* Wrapper for version_compare() that allows using uppercase A and B
* for alpha and beta releases.
*
* See http://www.php.net/manual/en/function.version-compare.php
*
* @param string $version1 First version number
* @param string $version2 Second version number
* @param string $operator Comparison operator (optional)
*
* @return mixed Boolean (true, false) if comparison operator is specified.
* Integer (-1, 0, 1) otherwise.
*/
public function compare($version1, $version2, $operator = null)
{
return phpbb_version_compare($version1, $version2, $operator);
}
/**
* Check whether or not a version is "stable"
*
* Stable means only numbers OR a pl release
*
* @param string $version
* @return bool Bool true or false
*/
public function is_stable($version)
{
$matches = false;
preg_match('/^[\d\.]+/', $version, $matches);
if (empty($matches[0]))
{
return false;
}
return $this->compare($version, $matches[0], '>=');
}
/**
* Gets the latest version for the current branch the user is on
*
* @param bool $force_update Ignores cached data. Defaults to false.
* @param bool $force_cache Force the use of the cache. Override $force_update.
* @return string
* @throws \RuntimeException
*/
public function get_latest_on_current_branch($force_update = false, $force_cache = false)
{
$versions = $this->get_versions_matching_stability($force_update, $force_cache);
$self = $this;
$current_version = $this->current_version;
// Filter out any versions less than to the current version
$versions = array_filter($versions, function($data) use ($self, $current_version) {
return $self->compare($data['current'], $current_version, '>=');
});
// Get the lowest version from the previous list.
return array_reduce($versions, function($value, $data) use ($self) {
if ($value === null || $self->compare($data['current'], $value, '<'))
{
return $data['current'];
}
return $value;
});
}
/**
* Obtains the latest version information
*
* @param bool $force_update Ignores cached data. Defaults to false.
* @param bool $force_cache Force the use of the cache. Override $force_update.
* @return string
* @throws \RuntimeException
*/
public function get_suggested_updates($force_update = false, $force_cache = false)
{
$versions = $this->get_versions_matching_stability($force_update, $force_cache);
$self = $this;
$current_version = $this->current_version;
// Filter out any versions less than or equal to the current version
return array_filter($versions, function($data) use ($self, $current_version) {
return $self->compare($data['current'], $current_version, '>');
});
}
/**
* Obtains the latest version information matching the stability of the current install
*
* @param bool $force_update Ignores cached data. Defaults to false.
* @param bool $force_cache Force the use of the cache. Override $force_update.
* @return string Version info
* @throws \RuntimeException
*/
public function get_versions_matching_stability($force_update = false, $force_cache = false)
{
$info = $this->get_versions($force_update, $force_cache);
if ($this->force_stability !== null)
{
return ($this->force_stability === 'unstable') ? $info['unstable'] : $info['stable'];
}
return ($this->is_stable($this->current_version)) ? $info['stable'] : $info['unstable'];
}
/**
* Obtains the latest version information
*
* @param bool $force_update Ignores cached data. Defaults to false.
* @param bool $force_cache Force the use of the cache. Override $force_update.
* @return string Version info, includes stable and unstable data
* @throws \RuntimeException
*/
public function get_versions($force_update = false, $force_cache = false)
{
$cache_file = '_versioncheck_' . $this->host . $this->path . $this->file . $this->use_ssl;
$info = $this->cache->get($cache_file);
if ($info === false && $force_cache)
{
throw new \RuntimeException($this->user->lang('VERSIONCHECK_FAIL'));
}
else if ($info === false || $force_update)
{
try {
$info = $this->file_downloader->get($this->host, $this->path, $this->file, $this->use_ssl ? 443 : 80);
}
catch (\phpbb\exception\runtime_exception $exception)
{
$prepare_parameters = array_merge(array($exception->getMessage()), $exception->get_parameters());
throw new \RuntimeException(call_user_func_array(array($this->user, 'lang'), $prepare_parameters));
}
$error_string = $this->file_downloader->get_error_string();
if (!empty($error_string))
{
throw new \RuntimeException($error_string);
}
$info = json_decode($info, true);
// Sanitize any data we retrieve from a server
if (!empty($info))
{
$json_sanitizer = function (&$value, $key) {
$type_cast_helper = new \phpbb\request\type_cast_helper();
$type_cast_helper->set_var($value, $value, gettype($value), true);
};
array_walk_recursive($info, $json_sanitizer);
}
if (empty($info['stable']) && empty($info['unstable']))
{
$this->user->add_lang('acp/common');
throw new \RuntimeException($this->user->lang('VERSIONCHECK_FAIL'));
}
$info['stable'] = (empty($info['stable'])) ? array() : $info['stable'];
$info['unstable'] = (empty($info['unstable'])) ? $info['stable'] : $info['unstable'];
$this->cache->put($cache_file, $info, 86400); // 24 hours
}
return $info;
}
}
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