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Current File : /usr/share/php/Composer/Config.php
<?php

/*
 * This file is part of Composer.
 *
 * (c) Nils Adermann <naderman@naderman.de>
 *     Jordi Boggiano <j.boggiano@seld.be>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Composer;

use Composer\Config\ConfigSourceInterface;
use Composer\Downloader\TransportException;
use Composer\IO\IOInterface;
use Composer\Util\Platform;
use Composer\Util\ProcessExecutor;

/**
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class Config
{
    const RELATIVE_PATHS = 1;

    public static $defaultConfig = array(
        'process-timeout' => 300,
        'use-include-path' => false,
        'preferred-install' => 'auto',
        'notify-on-install' => true,
        'github-protocols' => array('https', 'ssh', 'git'),
        'vendor-dir' => 'vendor',
        'bin-dir' => '{$vendor-dir}/bin',
        'cache-dir' => '{$home}/cache',
        'data-dir' => '{$home}',
        'cache-files-dir' => '{$cache-dir}/files',
        'cache-repo-dir' => '{$cache-dir}/repo',
        'cache-vcs-dir' => '{$cache-dir}/vcs',
        'cache-ttl' => 15552000, // 6 months
        'cache-files-ttl' => null, // fallback to cache-ttl
        'cache-files-maxsize' => '300MiB',
        'bin-compat' => 'auto',
        'discard-changes' => false,
        'autoloader-suffix' => null,
        'sort-packages' => false,
        'optimize-autoloader' => false,
        'classmap-authoritative' => false,
        'apcu-autoloader' => false,
        'prepend-autoloader' => true,
        'github-domains' => array('github.com'),
        'bitbucket-expose-hostname' => true,
        'disable-tls' => false,
        'secure-http' => true,
        'cafile' => null,
        'capath' => null,
        'github-expose-hostname' => true,
        'gitlab-domains' => array('gitlab.com'),
        'store-auths' => 'prompt',
        'platform' => array(),
        'archive-format' => 'tar',
        'archive-dir' => '.',
        'htaccess-protect' => true,
        'use-github-api' => true,
        'lock' => true,
        // valid keys without defaults (auth config stuff):
        // bitbucket-oauth
        // github-oauth
        // gitlab-oauth
        // gitlab-token
        // http-basic
        // bearer
    );

    public static $defaultRepositories = array(
        'packagist.org' => array(
            'type' => 'composer',
            'url' => 'https?://repo.packagist.org',
            'allow_ssl_downgrade' => true,
        ),
    );

    private $config;
    private $baseDir;
    private $repositories;
    /** @var ConfigSourceInterface */
    private $configSource;
    /** @var ConfigSourceInterface */
    private $authConfigSource;
    private $useEnvironment;
    private $warnedHosts = array();

    /**
     * @param bool   $useEnvironment Use COMPOSER_ environment variables to replace config settings
     * @param string $baseDir        Optional base directory of the config
     */
    public function __construct($useEnvironment = true, $baseDir = null)
    {
        // load defaults
        $this->config = static::$defaultConfig;
        $this->repositories = static::$defaultRepositories;
        $this->useEnvironment = (bool) $useEnvironment;
        $this->baseDir = $baseDir;
    }

    public function setConfigSource(ConfigSourceInterface $source)
    {
        $this->configSource = $source;
    }

    public function getConfigSource()
    {
        return $this->configSource;
    }

    public function setAuthConfigSource(ConfigSourceInterface $source)
    {
        $this->authConfigSource = $source;
    }

    public function getAuthConfigSource()
    {
        return $this->authConfigSource;
    }

    /**
     * Merges new config values with the existing ones (overriding)
     *
     * @param array $config
     */
    public function merge($config)
    {
        // override defaults with given config
        if (!empty($config['config']) && is_array($config['config'])) {
            foreach ($config['config'] as $key => $val) {
                if (in_array($key, array('bitbucket-oauth', 'github-oauth', 'gitlab-oauth', 'gitlab-token', 'http-basic', 'bearer')) && isset($this->config[$key])) {
                    $this->config[$key] = array_merge($this->config[$key], $val);
                } elseif ('preferred-install' === $key && isset($this->config[$key])) {
                    if (is_array($val) || is_array($this->config[$key])) {
                        if (is_string($val)) {
                            $val = array('*' => $val);
                        }
                        if (is_string($this->config[$key])) {
                            $this->config[$key] = array('*' => $this->config[$key]);
                        }
                        $this->config[$key] = array_merge($this->config[$key], $val);
                        // the full match pattern needs to be last
                        if (isset($this->config[$key]['*'])) {
                            $wildcard = $this->config[$key]['*'];
                            unset($this->config[$key]['*']);
                            $this->config[$key]['*'] = $wildcard;
                        }
                    } else {
                        $this->config[$key] = $val;
                    }
                } else {
                    $this->config[$key] = $val;
                }
            }
        }

        if (!empty($config['repositories']) && is_array($config['repositories'])) {
            $this->repositories = array_reverse($this->repositories, true);
            $newRepos = array_reverse($config['repositories'], true);
            foreach ($newRepos as $name => $repository) {
                // disable a repository by name
                if (false === $repository) {
                    $this->disableRepoByName($name);
                    continue;
                }

                // disable a repository with an anonymous {"name": false} repo
                if (is_array($repository) && 1 === count($repository) && false === current($repository)) {
                    $this->disableRepoByName(key($repository));
                    continue;
                }

                // store repo
                if (is_int($name)) {
                    $this->repositories[] = $repository;
                } else {
                    if ($name === 'packagist') { // BC support for default "packagist" named repo
                        $this->repositories[$name . '.org'] = $repository;
                    } else {
                        $this->repositories[$name] = $repository;
                    }
                }
            }
            $this->repositories = array_reverse($this->repositories, true);
        }
    }

    /**
     * @return array
     */
    public function getRepositories()
    {
        return $this->repositories;
    }

    /**
     * Returns a setting
     *
     * @param  string            $key
     * @param  int               $flags Options (see class constants)
     * @throws \RuntimeException
     * @return mixed
     */
    public function get($key, $flags = 0)
    {
        switch ($key) {
            case 'vendor-dir':
            case 'bin-dir':
            case 'process-timeout':
            case 'data-dir':
            case 'cache-dir':
            case 'cache-files-dir':
            case 'cache-repo-dir':
            case 'cache-vcs-dir':
            case 'cafile':
            case 'capath':
                // convert foo-bar to COMPOSER_FOO_BAR and check if it exists since it overrides the local config
                $env = 'COMPOSER_' . strtoupper(strtr($key, '-', '_'));

                $val = $this->getComposerEnv($env);
                $val = rtrim((string) $this->process(false !== $val ? $val : $this->config[$key], $flags), '/\\');
                $val = Platform::expandPath($val);

                if (substr($key, -4) !== '-dir') {
                    return $val;
                }

                return (($flags & self::RELATIVE_PATHS) == self::RELATIVE_PATHS) ? $val : $this->realpath($val);

            case 'htaccess-protect':
                $value = $this->getComposerEnv('COMPOSER_HTACCESS_PROTECT');
                if (false === $value) {
                    $value = $this->config[$key];
                }
                return $value !== 'false' && (bool) $value;

            case 'cache-ttl':
                return (int) $this->config[$key];

            case 'cache-files-maxsize':
                if (!preg_match('/^\s*([0-9.]+)\s*(?:([kmg])(?:i?b)?)?\s*$/i', $this->config[$key], $matches)) {
                    throw new \RuntimeException(
                        "Could not parse the value of 'cache-files-maxsize': {$this->config[$key]}"
                    );
                }
                $size = $matches[1];
                if (isset($matches[2])) {
                    switch (strtolower($matches[2])) {
                        case 'g':
                            $size *= 1024;
                            // intentional fallthrough
                            // no break
                        case 'm':
                            $size *= 1024;
                            // intentional fallthrough
                            // no break
                        case 'k':
                            $size *= 1024;
                            break;
                    }
                }

                return $size;

            case 'cache-files-ttl':
                if (isset($this->config[$key])) {
                    return (int) $this->config[$key];
                }

                return (int) $this->config['cache-ttl'];

            case 'home':
                $val = preg_replace('#^(\$HOME|~)(/|$)#', rtrim(getenv('HOME') ?: getenv('USERPROFILE'), '/\\') . '/', $this->config[$key]);

                return rtrim($this->process($val, $flags), '/\\');

            case 'bin-compat':
                $value = $this->getComposerEnv('COMPOSER_BIN_COMPAT') ?: $this->config[$key];

                if (!in_array($value, array('auto', 'full'))) {
                    throw new \RuntimeException(
                        "Invalid value for 'bin-compat': {$value}. Expected auto, full"
                    );
                }

                return $value;

            case 'discard-changes':
                if ($env = $this->getComposerEnv('COMPOSER_DISCARD_CHANGES')) {
                    if (!in_array($env, array('stash', 'true', 'false', '1', '0'), true)) {
                        throw new \RuntimeException(
                            "Invalid value for COMPOSER_DISCARD_CHANGES: {$env}. Expected 1, 0, true, false or stash"
                        );
                    }
                    if ('stash' === $env) {
                        return 'stash';
                    }

                    // convert string value to bool
                    return $env !== 'false' && (bool) $env;
                }

                if (!in_array($this->config[$key], array(true, false, 'stash'), true)) {
                    throw new \RuntimeException(
                        "Invalid value for 'discard-changes': {$this->config[$key]}. Expected true, false or stash"
                    );
                }

                return $this->config[$key];

            case 'github-protocols':
                $protos = $this->config['github-protocols'];
                if ($this->config['secure-http'] && false !== ($index = array_search('git', $protos))) {
                    unset($protos[$index]);
                }
                if (reset($protos) === 'http') {
                    throw new \RuntimeException('The http protocol for github is not available anymore, update your config\'s github-protocols to use "https", "git" or "ssh"');
                }

                return $protos;

            case 'disable-tls':
                return $this->config[$key] !== 'false' && (bool) $this->config[$key];
            case 'secure-http':
                return $this->config[$key] !== 'false' && (bool) $this->config[$key];
            case 'use-github-api':
                return $this->config[$key] !== 'false' && (bool) $this->config[$key];
            case 'lock':
                return $this->config[$key] !== 'false' && (bool) $this->config[$key];
            default:
                if (!isset($this->config[$key])) {
                    return null;
                }

                return $this->process($this->config[$key], $flags);
        }
    }

    public function all($flags = 0)
    {
        $all = array(
            'repositories' => $this->getRepositories(),
        );
        foreach (array_keys($this->config) as $key) {
            $all['config'][$key] = $this->get($key, $flags);
        }

        return $all;
    }

    public function raw()
    {
        return array(
            'repositories' => $this->getRepositories(),
            'config' => $this->config,
        );
    }

    /**
     * Checks whether a setting exists
     *
     * @param  string $key
     * @return bool
     */
    public function has($key)
    {
        return array_key_exists($key, $this->config);
    }

    /**
     * Replaces {$refs} inside a config string
     *
     * @param  string|int|null $value a config string that can contain {$refs-to-other-config}
     * @param  int             $flags Options (see class constants)
     * @return string|int|null
     */
    private function process($value, $flags)
    {
        $config = $this;

        if (!is_string($value)) {
            return $value;
        }

        return preg_replace_callback('#\{\$(.+)\}#', function ($match) use ($config, $flags) {
            return $config->get($match[1], $flags);
        }, $value);
    }

    /**
     * Turns relative paths in absolute paths without realpath()
     *
     * Since the dirs might not exist yet we can not call realpath or it will fail.
     *
     * @param  string $path
     * @return string
     */
    private function realpath($path)
    {
        if (preg_match('{^(?:/|[a-z]:|[a-z0-9.]+://)}i', $path)) {
            return $path;
        }

        return $this->baseDir . '/' . $path;
    }

    /**
     * Reads the value of a Composer environment variable
     *
     * This should be used to read COMPOSER_ environment variables
     * that overload config values.
     *
     * @param  string      $var
     * @return string|bool
     */
    private function getComposerEnv($var)
    {
        if ($this->useEnvironment) {
            return getenv($var);
        }

        return false;
    }

    private function disableRepoByName($name)
    {
        if (isset($this->repositories[$name])) {
            unset($this->repositories[$name]);
        } elseif ($name === 'packagist') { // BC support for default "packagist" named repo
            unset($this->repositories['packagist.org']);
        }
    }

    /**
     * Validates that the passed URL is allowed to be used by current config, or throws an exception.
     *
     * @param string      $url
     * @param IOInterface $io
     */
    public function prohibitUrlByConfig($url, IOInterface $io = null)
    {
        // Return right away if the URL is malformed or custom (see issue #5173)
        if (false === filter_var($url, FILTER_VALIDATE_URL)) {
            return;
        }

        // Extract scheme and throw exception on known insecure protocols
        $scheme = parse_url($url, PHP_URL_SCHEME);
        if (in_array($scheme, array('http', 'git', 'ftp', 'svn'))) {
            if ($this->get('secure-http')) {
                throw new TransportException("Your configuration does not allow connections to $url. See https://getcomposer.org/doc/06-config.md#secure-http for details.");
            } elseif ($io) {
                $host = parse_url($url, PHP_URL_HOST);
                if (!isset($this->warnedHosts[$host])) {
                    $io->writeError("<warning>Warning: Accessing $host over $scheme which is an insecure protocol.</warning>");
                }
                $this->warnedHosts[$host] = true;
            }
        }
    }

    /**
     * Used by long-running custom scripts in composer.json
     *
     * "scripts": {
     *   "watch": [
     *     "Composer\\Config::disableProcessTimeout",
     *     "vendor/bin/long-running-script --watch"
     *   ]
     * }
     */
    public static function disableProcessTimeout()
    {
        // Override global timeout set earlier by environment or config
        ProcessExecutor::setTimeout(0);
    }
}

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