lib/private/App/PlatformRepository.php
<?php
/**
* @author Thomas Müller <thomas.mueller@tmit.eu>
*
* @copyright Copyright (c) 2018, ownCloud GmbH
* @license AGPL-3.0
*
* This code is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License, version 3,
* along with this program. If not, see <http://www.gnu.org/licenses/>
*
*/
namespace OC\App;
/**
* Class PlatformRepository
*
* Inspired by the composer project - licensed under MIT
* https://github.com/composer/composer/blob/master/src/Composer/Repository/PlatformRepository.php#L82
*
* @package OC\App
*/
class PlatformRepository {
private $packages;
public function __construct() {
$this->packages = $this->initialize();
}
protected function initialize() {
$loadedExtensions = \get_loaded_extensions();
$packages = [];
// Extensions scanning
foreach ($loadedExtensions as $name) {
if (\in_array($name, ['standard', 'Core'])) {
continue;
}
$ext = new \ReflectionExtension($name);
try {
$prettyVersion = $ext->getVersion();
$prettyVersion = $this->normalizeVersion($prettyVersion);
} catch (\UnexpectedValueException $e) {
$prettyVersion = '0';
$prettyVersion = $this->normalizeVersion($prettyVersion);
}
$packages[$this->buildPackageName($name)] = $prettyVersion;
}
foreach ($loadedExtensions as $name) {
$prettyVersion = null;
switch ($name) {
case 'curl':
$curlVersion = \curl_version();
$prettyVersion = $curlVersion['version'];
break;
case 'iconv':
$prettyVersion = ICONV_VERSION;
break;
case 'intl':
$name = 'ICU';
if (\defined('INTL_ICU_VERSION')) {
$prettyVersion = INTL_ICU_VERSION;
} else {
$reflector = new \ReflectionExtension('intl');
\ob_start();
$reflector->info();
$output = \ob_get_clean();
\preg_match('/^ICU version => (.*)$/m', $output, $matches);
$prettyVersion = $matches[1];
}
break;
case 'libxml':
$prettyVersion = LIBXML_DOTTED_VERSION;
break;
case 'openssl':
$prettyVersion = \preg_replace_callback('{^(?:OpenSSL\s*)?([0-9.]+)([a-z]?).*}', function ($match) {
return $match[1] . (empty($match[2]) ? '' : '.' . (\ord($match[2]) - 96));
}, OPENSSL_VERSION_TEXT);
break;
case 'pcre':
$prettyVersion = \preg_replace('{^(\S+).*}', '$1', PCRE_VERSION);
break;
case 'uuid':
$prettyVersion = \phpversion('uuid');
break;
case 'xsl':
$prettyVersion = LIBXSLT_DOTTED_VERSION;
break;
default:
// None handled extensions have no special cases, skip
continue 2;
}
try {
$prettyVersion = $this->normalizeVersion($prettyVersion);
} catch (\UnexpectedValueException $e) {
continue;
}
$packages[$this->buildPackageName($name)] = $prettyVersion;
}
return $packages;
}
private function buildPackageName($name) {
return \str_replace(' ', '-', $name);
}
/**
* @param $name
* @return string
*/
public function findLibrary($name) {
$extName = $this->buildPackageName($name);
if (isset($this->packages[$extName])) {
return $this->packages[$extName];
}
return null;
}
private static $modifierRegex = '[._-]?(?:(stable|beta|b|RC|alpha|a|patch|pl|p)(?:[.-]?(\d+))?)?([.-]?dev)?';
/**
* Normalizes a version string to be able to perform comparisons on it
*
* https://github.com/composer/composer/blob/master/src/Composer/Package/Version/VersionParser.php#L94
*
* @param string $version
* @param string $fullVersion optional complete version string to give more context
* @throws \UnexpectedValueException
* @return string
*/
public function normalizeVersion($version, $fullVersion = null) {
$version = \trim($version);
if ($fullVersion === null) {
$fullVersion = $version;
}
// ignore aliases and just assume the alias is required instead of the source
if (\preg_match('{^([^,\s]+) +as +([^,\s]+)$}', $version, $match)) {
$version = $match[1];
}
// match master-like branches
if (\preg_match('{^(?:dev-)?(?:master|trunk|default)$}i', $version)) {
return '9999999-dev';
}
if (\strtolower(\substr($version, 0, 4)) === 'dev-') {
return 'dev-' . \substr($version, 4);
}
// match classical versioning
if (\preg_match('{^v?(\d{1,3})(\.\d+)?(\.\d+)?(\.\d+)?' . self::$modifierRegex . '$}i', $version, $matches)) {
$version = $matches[1]
. (!empty($matches[2]) ? $matches[2] : '.0')
. (!empty($matches[3]) ? $matches[3] : '.0')
. (!empty($matches[4]) ? $matches[4] : '.0');
$index = 5;
} elseif (\preg_match('{^v?(\d{4}(?:[.:-]?\d{2}){1,6}(?:[.:-]?\d{1,3})?)' . self::$modifierRegex . '$}i', $version, $matches)) { // match date-based versioning
$version = \preg_replace('{\D}', '-', $matches[1]);
$index = 2;
} elseif (\preg_match('{^v?(\d{4,})(\.\d+)?(\.\d+)?(\.\d+)?' . self::$modifierRegex . '$}i', $version, $matches)) {
$version = $matches[1]
. (!empty($matches[2]) ? $matches[2] : '.0')
. (!empty($matches[3]) ? $matches[3] : '.0')
. (!empty($matches[4]) ? $matches[4] : '.0');
$index = 5;
}
// add version modifiers if a version was matched
if (isset($index)) {
if (!empty($matches[$index])) {
if ($matches[$index] === 'stable') {
return $version;
}
$version .= '-' . $this->expandStability($matches[$index]) . (!empty($matches[$index + 1]) ? $matches[$index + 1] : '');
}
if (!empty($matches[$index + 2])) {
$version .= '-dev';
}
return $version;
}
$extraMessage = '';
if (\preg_match('{ +as +' . \preg_quote($version) . '$}', $fullVersion)) {
$extraMessage = ' in "' . $fullVersion . '", the alias must be an exact version';
} elseif (\preg_match('{^' . \preg_quote($version) . ' +as +}', $fullVersion)) {
$extraMessage = ' in "' . $fullVersion . '", the alias source must be an exact version, if it is a branch name you should prefix it with dev-';
}
throw new \UnexpectedValueException('Invalid version string "' . $version . '"' . $extraMessage);
}
/**
* @param string $stability
* @return string
*/
private function expandStability($stability) {
$stability = \strtolower($stability);
switch ($stability) {
case 'a':
return 'alpha';
case 'b':
return 'beta';
case 'p':
case 'pl':
return 'patch';
case 'rc':
return 'RC';
default:
return $stability;
}
}
}