326 lines
9.4 KiB
PHP
326 lines
9.4 KiB
PHP
<?php
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/**
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* @author Bernhard Posselt <dev@bernhard-posselt.com>
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* @author Joas Schilling <nickvergessen@owncloud.com>
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* @author Lukas Reschke <lukas@owncloud.com>
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* @author Morris Jobke <hey@morrisjobke.de>
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* @author Thomas Müller <thomas.mueller@tmit.eu>
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*
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* @copyright Copyright (c) 2016, ownCloud, Inc.
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* @license AGPL-3.0
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*
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* This code is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License, version 3,
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License, version 3,
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* along with this program. If not, see <http://www.gnu.org/licenses/>
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*
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*/
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namespace OC\App;
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use OCP\IL10N;
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class DependencyAnalyzer {
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/** @var Platform */
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private $platform;
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/** @var \OCP\IL10N */
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private $l;
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/** @var array */
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private $appInfo;
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/**
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* @param Platform $platform
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* @param \OCP\IL10N $l
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*/
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function __construct(Platform $platform, IL10N $l) {
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$this->platform = $platform;
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$this->l = $l;
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}
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/**
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* @param array $app
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* @returns array of missing dependencies
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*/
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public function analyze(array $app) {
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$this->appInfo = $app;
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if (isset($app['dependencies'])) {
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$dependencies = $app['dependencies'];
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} else {
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$dependencies = [];
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}
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return array_merge(
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$this->analyzePhpVersion($dependencies),
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$this->analyzeDatabases($dependencies),
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$this->analyzeCommands($dependencies),
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$this->analyzeLibraries($dependencies),
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$this->analyzeOS($dependencies),
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$this->analyzeOC($dependencies, $app)
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);
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}
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/**
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* Truncates both versions to the lowest common version, e.g.
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* 5.1.2.3 and 5.1 will be turned into 5.1 and 5.1,
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* 5.2.6.5 and 5.1 will be turned into 5.2 and 5.1
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* @param string $first
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* @param string $second
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* @return string[] first element is the first version, second element is the
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* second version
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*/
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private function normalizeVersions($first, $second) {
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$first = explode('.', $first);
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$second = explode('.', $second);
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// get both arrays to the same minimum size
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$length = min(count($second), count($first));
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$first = array_slice($first, 0, $length);
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$second = array_slice($second, 0, $length);
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return [implode('.', $first), implode('.', $second)];
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}
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/**
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* Parameters will be normalized and then passed into version_compare
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* in the same order they are specified in the method header
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* @param string $first
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* @param string $second
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* @param string $operator
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* @return bool result similar to version_compare
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*/
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private function compare($first, $second, $operator) {
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// we can't normalize versions if one of the given parameters is not a
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// version string but null. In case one parameter is null normalization
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// will therefore be skipped
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if ($first !== null && $second !== null) {
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list($first, $second) = $this->normalizeVersions($first, $second);
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}
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return version_compare($first, $second, $operator);
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}
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/**
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* Checks if a version is bigger than another version
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* @param string $first
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* @param string $second
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* @return bool true if the first version is bigger than the second
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*/
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private function compareBigger($first, $second) {
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return $this->compare($first, $second, '>');
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}
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/**
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* Checks if a version is smaller than another version
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* @param string $first
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* @param string $second
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* @return bool true if the first version is smaller than the second
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*/
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private function compareSmaller($first, $second) {
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return $this->compare($first, $second, '<');
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}
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/**
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* @param array $dependencies
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* @return array
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*/
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private function analyzePhpVersion(array $dependencies) {
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$missing = [];
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if (isset($dependencies['php']['@attributes']['min-version'])) {
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$minVersion = $dependencies['php']['@attributes']['min-version'];
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if ($this->compareSmaller($this->platform->getPhpVersion(), $minVersion)) {
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$missing[] = (string)$this->l->t('PHP %s or higher is required.', $minVersion);
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}
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}
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if (isset($dependencies['php']['@attributes']['max-version'])) {
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$maxVersion = $dependencies['php']['@attributes']['max-version'];
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if ($this->compareBigger($this->platform->getPhpVersion(), $maxVersion)) {
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$missing[] = (string)$this->l->t('PHP with a version lower than %s is required.', $maxVersion);
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}
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}
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if (isset($dependencies['php']['@attributes']['min-int-size'])) {
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$intSize = $dependencies['php']['@attributes']['min-int-size'];
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if ($intSize > $this->platform->getIntSize()*8) {
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$missing[] = (string)$this->l->t('%sbit or higher PHP required.', $intSize);
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}
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}
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return $missing;
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}
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/**
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* @param array $dependencies
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* @return array
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*/
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private function analyzeDatabases(array $dependencies) {
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$missing = [];
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if (!isset($dependencies['database'])) {
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return $missing;
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}
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$supportedDatabases = $dependencies['database'];
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if (empty($supportedDatabases)) {
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return $missing;
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}
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if (!is_array($supportedDatabases)) {
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$supportedDatabases = array($supportedDatabases);
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}
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$supportedDatabases = array_map(function ($db) {
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return $this->getValue($db);
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}, $supportedDatabases);
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$currentDatabase = $this->platform->getDatabase();
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if (!in_array($currentDatabase, $supportedDatabases)) {
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$missing[] = (string)$this->l->t('Following databases are supported: %s', join(', ', $supportedDatabases));
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}
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return $missing;
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}
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/**
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* @param array $dependencies
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* @return array
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*/
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private function analyzeCommands(array $dependencies) {
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$missing = [];
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if (!isset($dependencies['command'])) {
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return $missing;
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}
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$commands = $dependencies['command'];
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if (!is_array($commands)) {
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$commands = array($commands);
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}
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$os = $this->platform->getOS();
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foreach ($commands as $command) {
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if (isset($command['@attributes']['os']) && $command['@attributes']['os'] !== $os) {
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continue;
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}
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$commandName = $this->getValue($command);
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if (!$this->platform->isCommandKnown($commandName)) {
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$missing[] = (string)$this->l->t('The command line tool %s could not be found', $commandName);
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}
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}
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return $missing;
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}
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/**
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* @param array $dependencies
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* @return array
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*/
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private function analyzeLibraries(array $dependencies) {
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$missing = [];
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if (!isset($dependencies['lib'])) {
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return $missing;
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}
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$libs = $dependencies['lib'];
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if (!is_array($libs)) {
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$libs = array($libs);
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}
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foreach ($libs as $lib) {
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$libName = $this->getValue($lib);
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$libVersion = $this->platform->getLibraryVersion($libName);
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if (is_null($libVersion)) {
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$missing[] = (string)$this->l->t('The library %s is not available.', $libName);
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continue;
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}
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if (is_array($lib)) {
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if (isset($lib['@attributes']['min-version'])) {
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$minVersion = $lib['@attributes']['min-version'];
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if ($this->compareSmaller($libVersion, $minVersion)) {
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$missing[] = (string)$this->l->t('Library %s with a version higher than %s is required - available version %s.',
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array($libName, $minVersion, $libVersion));
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}
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}
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if (isset($lib['@attributes']['max-version'])) {
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$maxVersion = $lib['@attributes']['max-version'];
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if ($this->compareBigger($libVersion, $maxVersion)) {
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$missing[] = (string)$this->l->t('Library %s with a version lower than %s is required - available version %s.',
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array($libName, $maxVersion, $libVersion));
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}
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}
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}
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}
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return $missing;
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}
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/**
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* @param array $dependencies
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* @return array
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*/
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private function analyzeOS(array $dependencies) {
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$missing = [];
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if (!isset($dependencies['os'])) {
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return $missing;
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}
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$oss = $dependencies['os'];
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if (empty($oss)) {
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return $missing;
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}
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if (is_array($oss)) {
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$oss = array_map(function ($os) {
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return $this->getValue($os);
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}, $oss);
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} else {
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$oss = array($oss);
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}
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$currentOS = $this->platform->getOS();
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if (!in_array($currentOS, $oss)) {
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$missing[] = (string)$this->l->t('Following platforms are supported: %s', join(', ', $oss));
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}
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return $missing;
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}
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/**
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* @param array $dependencies
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* @param array $appInfo
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* @return array
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*/
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private function analyzeOC(array $dependencies, array $appInfo) {
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$missing = [];
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$minVersion = null;
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if (isset($dependencies['owncloud']['@attributes']['min-version'])) {
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$minVersion = $dependencies['owncloud']['@attributes']['min-version'];
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} elseif (isset($appInfo['requiremin'])) {
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$minVersion = $appInfo['requiremin'];
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} elseif (isset($appInfo['require'])) {
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$minVersion = $appInfo['require'];
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}
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$maxVersion = null;
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if (isset($dependencies['owncloud']['@attributes']['max-version'])) {
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$maxVersion = $dependencies['owncloud']['@attributes']['max-version'];
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} elseif (isset($appInfo['requiremax'])) {
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$maxVersion = $appInfo['requiremax'];
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}
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if (!is_null($minVersion)) {
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if ($this->compareSmaller($this->platform->getOcVersion(), $minVersion)) {
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$missing[] = (string)$this->l->t('ownCloud %s or higher is required.', $minVersion);
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}
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}
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if (!is_null($maxVersion)) {
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if ($this->compareBigger($this->platform->getOcVersion(), $maxVersion)) {
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$missing[] = (string)$this->l->t('ownCloud %s or lower is required.', $maxVersion);
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}
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}
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return $missing;
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}
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/**
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* @param $element
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* @return mixed
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*/
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private function getValue($element) {
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if (isset($element['@value']))
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return $element['@value'];
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return (string)$element;
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}
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}
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