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File Content: `DiagnoseCommand.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\Command;

use Composer\Composer;
use Composer\Factory;
use Composer\Config;
use Composer\Downloader\TransportException;
use Composer\Pcre\Preg;
use Composer\Repository\PlatformRepository;
use Composer\Plugin\CommandEvent;
use Composer\Plugin\PluginEvents;
use Composer\Util\ConfigValidator;
use Composer\Util\IniHelper;
use Composer\Util\ProcessExecutor;
use Composer\Util\HttpDownloader;
use Composer\Util\StreamContextFactory;
use Composer\Util\Platform;
use Composer\SelfUpdate\Keys;
use Composer\SelfUpdate\Versions;
use Composer\IO\NullIO;
use Composer\Package\CompletePackageInterface;
use Composer\XdebugHandler\XdebugHandler;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\OutputInterface;
use Symfony\Component\Process\ExecutableFinder;

/**
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class DiagnoseCommand extends BaseCommand
{
    /** @var HttpDownloader */
    protected $httpDownloader;

    /** @var ProcessExecutor */
    protected $process;

    /** @var int */
    protected $exitCode = 0;

    /**
     * @return void
     */
    protected function configure()
    {
        $this
            ->setName('diagnose')
            ->setDescription('Diagnoses the system to identify common errors.')
            ->setHelp(
                <<<EOT
The <info>diagnose</info> command checks common errors to help debugging problems.

The process exit code will be 1 in case of warnings and 2 for errors.

Read more at https://getcomposer.org/doc/03-cli.md#diagnose
EOT
            )
        ;
    }

    /**
     * @return int
     */
    protected function execute(InputInterface $input, OutputInterface $output)
    {
        $composer = $this->getComposer(false);
        $io = $this->getIO();

        if ($composer) {
            $commandEvent = new CommandEvent(PluginEvents::COMMAND, 'diagnose', $input, $output);
            $composer->getEventDispatcher()->dispatch($commandEvent->getName(), $commandEvent);

            $io->write('Checking composer.json: ', false);
            $this->outputResult($this->checkComposerSchema());
        }

        if ($composer) {
            $config = $composer->getConfig();
        } else {
            $config = Factory::createConfig();
        }

        $config->merge(array('config' => array('secure-http' => false)), Config::SOURCE_COMMAND);
        $config->prohibitUrlByConfig('http://repo.packagist.org', new NullIO);

        $this->httpDownloader = Factory::createHttpDownloader($io, $config);
        $this->process = new ProcessExecutor($io);

        $io->write('Checking platform settings: ', false);
        $this->outputResult($this->checkPlatform());

        $io->write('Checking git settings: ', false);
        $this->outputResult($this->checkGit());

        $io->write('Checking http connectivity to packagist: ', false);
        $this->outputResult($this->checkHttp('http', $config));

        $io->write('Checking https connectivity to packagist: ', false);
        $this->outputResult($this->checkHttp('https', $config));

        $opts = stream_context_get_options(StreamContextFactory::getContext('http://example.org'));
        if (!empty($opts['http']['proxy'])) {
            $io->write('Checking HTTP proxy: ', false);
            $this->outputResult($this->checkHttpProxy());
        }

        if ($oauth = $config->get('github-oauth')) {
            foreach ($oauth as $domain => $token) {
                $io->write('Checking '.$domain.' oauth access: ', false);
                $this->outputResult($this->checkGithubOauth($domain, $token));
            }
        } else {
            $io->write('Checking github.com rate limit: ', false);
            try {
                $rate = $this->getGithubRateLimit('github.com');
                if (!is_array($rate)) {
                    $this->outputResult($rate);
                } elseif (10 > $rate['remaining']) {
                    $io->write('<warning>WARNING</warning>');
                    $io->write(sprintf(
                        '<comment>Github has a rate limit on their API. '
                        . 'You currently have <options=bold>%u</options=bold> '
                        . 'out of <options=bold>%u</options=bold> requests left.' . PHP_EOL
                        . 'See https://developer.github.com/v3/#rate-limiting and also' . PHP_EOL
                        . '    https://getcomposer.org/doc/articles/troubleshooting.md#api-rate-limit-and-oauth-tokens</comment>',
                        $rate['remaining'],
                        $rate['limit']
                    ));
                } else {
                    $this->outputResult(true);
                }
            } catch (\Exception $e) {
                if ($e instanceof TransportException && $e->getCode() === 401) {
                    $this->outputResult('<comment>The oauth token for github.com seems invalid, run "composer config --global --unset github-oauth.github.com" to remove it</comment>');
                } else {
                    $this->outputResult($e);
                }
            }
        }

        $io->write('Checking disk free space: ', false);
        $this->outputResult($this->checkDiskSpace($config));

        if (strpos(__FILE__, 'phar:') === 0) {
            $io->write('Checking pubkeys: ', false);
            $this->outputResult($this->checkPubKeys($config));

            $io->write('Checking composer version: ', false);
            $this->outputResult($this->checkVersion($config));
        }

        $io->write(sprintf('Composer version: <comment>%s</comment>', Composer::getVersion()));

        $platformOverrides = $config->get('platform') ?: array();
        $platformRepo = new PlatformRepository(array(), $platformOverrides);
        $phpPkg = $platformRepo->findPackage('php', '*');
        $phpVersion = $phpPkg->getPrettyVersion();
        if ($phpPkg instanceof CompletePackageInterface && false !== strpos($phpPkg->getDescription(), 'overridden')) {
            $phpVersion .= ' - ' . $phpPkg->getDescription();
        }

        $io->write(sprintf('PHP version: <comment>%s</comment>', $phpVersion));

        if (defined('PHP_BINARY')) {
            $io->write(sprintf('PHP binary path: <comment>%s</comment>', PHP_BINARY));
        }

        $io->write('OpenSSL version: ' . (defined('OPENSSL_VERSION_TEXT') ? '<comment>'.OPENSSL_VERSION_TEXT.'</comment>' : '<error>missing</error>'));
        $io->write('cURL version: ' . $this->getCurlVersion());

        $finder = new ExecutableFinder;
        $hasSystemUnzip = (bool) $finder->find('unzip');
        $bin7zip = '';
        if ($hasSystem7zip = (bool) $finder->find('7z', null, array('C:\Program Files\7-Zip'))) {
            $bin7zip = '7z';
        }
        if (!Platform::isWindows() && !$hasSystem7zip && $hasSystem7zip = (bool) $finder->find('7zz')) {
            $bin7zip = '7zz';
        }

        $io->write(
            'zip: ' . (extension_loaded('zip') ? '<comment>extension present</comment>' : '<comment>extension not loaded</comment>')
            . ', ' . ($hasSystemUnzip ? '<comment>unzip present</comment>' : '<comment>unzip not available</comment>')
            . ', ' . ($hasSystem7zip ? '<comment>7-Zip present ('.$bin7zip.')</comment>' : '<comment>7-Zip not available</comment>')
            . (($hasSystem7zip || $hasSystemUnzip) && !function_exists('proc_open') ? ', <warning>proc_open is disabled or not present, unzip/7-z will not be usable</warning>' : '')
        );

        return $this->exitCode;
    }

    /**
     * @return string|true
     */
    private function checkComposerSchema()
    {
        $validator = new ConfigValidator($this->getIO());
        list($errors, , $warnings) = $validator->validate(Factory::getComposerFile());

        if ($errors || $warnings) {
            $messages = array(
                'error' => $errors,
                'warning' => $warnings,
            );

            $output = '';
            foreach ($messages as $style => $msgs) {
                foreach ($msgs as $msg) {
                    $output .= '<' . $style . '>' . $msg . '</' . $style . '>' . PHP_EOL;
                }
            }

            return rtrim($output);
        }

        return true;
    }

    /**
     * @return string|true
     */
    private function checkGit()
    {
        if (!function_exists('proc_open')) {
            return '<comment>proc_open is not available, git cannot be used</comment>';
        }

        $this->process->execute('git config color.ui', $output);
        if (strtolower(trim($output)) === 'always') {
            return '<comment>Your git color.ui setting is set to always, this is known to create issues. Use "git config --global color.ui true" to set it correctly.</comment>';
        }

        return true;
    }

    /**
     * @param string $proto
     *
     * @return string|string[]|true
     */
    private function checkHttp($proto, Config $config)
    {
        $result = $this->checkConnectivityAndComposerNetworkHttpEnablement();
        if ($result !== true) {
            return $result;
        }

        $result = array();
        if ($proto === 'https' && $config->get('disable-tls') === true) {
            $tlsWarning = '<warning>Composer is configured to disable SSL/TLS protection. This will leave remote HTTPS requests vulnerable to Man-In-The-Middle attacks.</warning>';
        }

        try {
            $this->httpDownloader->get($proto . '://repo.packagist.org/packages.json');
        } catch (TransportException $e) {
            if ($hints = HttpDownloader::getExceptionHints($e)) {
                foreach ($hints as $hint) {
                    $result[] = $hint;
                }
            }

            $result[] = '<error>[' . get_class($e) . '] ' . $e->getMessage() . '</error>';
        }

        if (isset($tlsWarning)) {
            $result[] = $tlsWarning;
        }

        if (count($result) > 0) {
            return $result;
        }

        return true;
    }

    /**
     * @return string|true|\Exception
     */
    private function checkHttpProxy()
    {
        $result = $this->checkConnectivityAndComposerNetworkHttpEnablement();
        if ($result !== true) {
            return $result;
        }

        $protocol = extension_loaded('openssl') ? 'https' : 'http';
        try {
            $json = $this->httpDownloader->get($protocol . '://repo.packagist.org/packages.json')->decodeJson();
            $hash = reset($json['provider-includes']);
            $hash = $hash['sha256'];
            $path = str_replace('%hash%', $hash, key($json['provider-includes']));
            $provider = $this->httpDownloader->get($protocol . '://repo.packagist.org/'.$path)->getBody();

            if (hash('sha256', $provider) !== $hash) {
                return 'It seems that your proxy is modifying http traffic on the fly';
            }
        } catch (\Exception $e) {
            return $e;
        }

        return true;
    }

    /**
     * @param string $domain
     * @param string $token
     *
     * @return string|true|\Exception
     */
    private function checkGithubOauth($domain, $token)
    {
        $result = $this->checkConnectivityAndComposerNetworkHttpEnablement();
        if ($result !== true) {
            return $result;
        }

        $this->getIO()->setAuthentication($domain, $token, 'x-oauth-basic');
        try {
            $url = $domain === 'github.com' ? 'https://api.'.$domain.'/' : 'https://'.$domain.'/api/v3/';

            $this->httpDownloader->get($url, array(
                'retry-auth-failure' => false,
            ));

            return true;
        } catch (\Exception $e) {
            if ($e instanceof TransportException && $e->getCode() === 401) {
                return '<comment>The oauth token for '.$domain.' seems invalid, run "composer config --global --unset github-oauth.'.$domain.'" to remove it</comment>';
            }

            return $e;
        }
    }

    /**
     * @param  string             $domain
     * @param  string             $token
     * @throws TransportException
     * @return mixed|string
     */
    private function getGithubRateLimit($domain, $token = null)
    {
        $result = $this->checkConnectivityAndComposerNetworkHttpEnablement();
        if ($result !== true) {
            return $result;
        }

        if ($token) {
            $this->getIO()->setAuthentication($domain, $token, 'x-oauth-basic');
        }

        $url = $domain === 'github.com' ? 'https://api.'.$domain.'/rate_limit' : 'https://'.$domain.'/api/rate_limit';
        $data = $this->httpDownloader->get($url, array('retry-auth-failure' => false))->decodeJson();

        return $data['resources']['core'];
    }

    /**
     * @return string|true
     */
    private function checkDiskSpace(Config $config)
    {
        if (!function_exists('disk_free_space')) {
            return true;
        }

        $minSpaceFree = 1024 * 1024;
        if ((($df = @disk_free_space($dir = $config->get('home'))) !== false && $df < $minSpaceFree)
            || (($df = @disk_free_space($dir = $config->get('vendor-dir'))) !== false && $df < $minSpaceFree)
        ) {
            return '<error>The disk hosting '.$dir.' is full</error>';
        }

        return true;
    }

    /**
     * @return string[]|true
     */
    private function checkPubKeys(Config $config)
    {
        $home = $config->get('home');
        $errors = array();
        $io = $this->getIO();

        if (file_exists($home.'/keys.tags.pub') && file_exists($home.'/keys.dev.pub')) {
            $io->write('');
        }

        if (file_exists($home.'/keys.tags.pub')) {
            $io->write('Tags Public Key Fingerprint: ' . Keys::fingerprint($home.'/keys.tags.pub'));
        } else {
            $errors[] = '<error>Missing pubkey for tags verification</error>';
        }

        if (file_exists($home.'/keys.dev.pub')) {
            $io->write('Dev Public Key Fingerprint: ' . Keys::fingerprint($home.'/keys.dev.pub'));
        } else {
            $errors[] = '<error>Missing pubkey for dev verification</error>';
        }

        if ($errors) {
            $errors[] = '<error>Run composer self-update --update-keys to set them up</error>';
        }

        return $errors ?: true;
    }

    /**
     * @return string|\Exception|true
     */
    private function checkVersion(Config $config)
    {
        $result = $this->checkConnectivityAndComposerNetworkHttpEnablement();
        if ($result !== true) {
            return $result;
        }

        $versionsUtil = new Versions($config, $this->httpDownloader);
        try {
            $latest = $versionsUtil->getLatest();
        } catch (\Exception $e) {
            return $e;
        }

        if (Composer::VERSION !== $latest['version'] && Composer::VERSION !== '@package_version@') {
            return '<comment>You are not running the latest '.$versionsUtil->getChannel().' version, run `composer self-update` to update ('.Composer::VERSION.' => '.$latest['version'].')</comment>';
        }

        return true;
    }

    /**
     * @return string
     */
    private function getCurlVersion()
    {
        if (extension_loaded('curl')) {
            if (!HttpDownloader::isCurlEnabled()) {
                return '<error>disabled via disable_functions, using php streams fallback, which reduces performance</error>';
            }

            $version = curl_version();

            return '<comment>'.$version['version'].'</comment> '.
                'libz <comment>'.(!empty($version['libz_version']) ? $version['libz_version'] : 'missing').'</comment> '.
                'ssl <comment>'.(isset($version['ssl_version']) ? $version['ssl_version'] : 'missing').'</comment>';
        }

        return '<error>missing, using php streams fallback, which reduces performance</error>';
    }

    /**
     * @param bool|string|string[]|\Exception $result
     *
     * @return void
     */
    private function outputResult($result)
    {
        $io = $this->getIO();
        if (true === $result) {
            $io->write('<info>OK</info>');

            return;
        }

        $hadError = false;
        $hadWarning = false;
        if ($result instanceof \Exception) {
            $result = '<error>['.get_class($result).'] '.$result->getMessage().'</error>';
        }

        if (!$result) {
            // falsey results should be considered as an error, even if there is nothing to output
            $hadError = true;
        } else {
            if (!is_array($result)) {
                $result = array($result);
            }
            foreach ($result as $message) {
                if (false !== strpos($message, '<error>')) {
                    $hadError = true;
                } elseif (false !== strpos($message, '<warning>')) {
                    $hadWarning = true;
                }
            }
        }

        if ($hadError) {
            $io->write('<error>FAIL</error>');
            $this->exitCode = max($this->exitCode, 2);
        } elseif ($hadWarning) {
            $io->write('<warning>WARNING</warning>');
            $this->exitCode = max($this->exitCode, 1);
        }

        if ($result) {
            foreach ($result as $message) {
                $io->write($message);
            }
        }
    }

    /**
     * @return string|true
     */
    private function checkPlatform()
    {
        $output = '';
        $out = function ($msg, $style) use (&$output) {
            $output .= '<'.$style.'>'.$msg.'</'.$style.'>'.PHP_EOL;
        };

        // code below taken from getcomposer.org/installer, any changes should be made there and replicated here
        $errors = array();
        $warnings = array();
        $displayIniMessage = false;

        $iniMessage = PHP_EOL.PHP_EOL.IniHelper::getMessage();
        $iniMessage .= PHP_EOL.'If you can not modify the ini file, you can also run `php -d option=value` to modify ini values on the fly. You can use -d multiple times.';

        if (!function_exists('json_decode')) {
            $errors['json'] = true;
        }

        if (!extension_loaded('Phar')) {
            $errors['phar'] = true;
        }

        if (!extension_loaded('filter')) {
            $errors['filter'] = true;
        }

        if (!extension_loaded('hash')) {
            $errors['hash'] = true;
        }

        if (!extension_loaded('iconv') && !extension_loaded('mbstring')) {
            $errors['iconv_mbstring'] = true;
        }

        if (!filter_var(ini_get('allow_url_fopen'), FILTER_VALIDATE_BOOLEAN)) {
            $errors['allow_url_fopen'] = true;
        }

        if (extension_loaded('ionCube Loader') && ioncube_loader_iversion() < 40009) {
            $errors['ioncube'] = ioncube_loader_version();
        }

        if (PHP_VERSION_ID < 50302) {
            $errors['php'] = PHP_VERSION;
        }

        if (!isset($errors['php']) && PHP_VERSION_ID < 50304) {
            $warnings['php'] = PHP_VERSION;
        }

        if (!extension_loaded('openssl')) {
            $errors['openssl'] = true;
        }

        if (extension_loaded('openssl') && OPENSSL_VERSION_NUMBER < 0x1000100f) {
            $warnings['openssl_version'] = true;
        }

        if (!defined('HHVM_VERSION') && !extension_loaded('apcu') && filter_var(ini_get('apc.enable_cli'), FILTER_VALIDATE_BOOLEAN)) {
            $warnings['apc_cli'] = true;
        }

        if (!extension_loaded('zlib')) {
            $warnings['zlib'] = true;
        }

        ob_start();
        phpinfo(INFO_GENERAL);
        $phpinfo = ob_get_clean();
        if (Preg::isMatch('{Configure Command(?: *</td><td class="v">| *=> *)(.*?)(?:</td>|$)}m', $phpinfo, $match)) {
            $configure = $match[1];

            if (false !== strpos($configure, '--enable-sigchild')) {
                $warnings['sigchild'] = true;
            }

            if (false !== strpos($configure, '--with-curlwrappers')) {
                $warnings['curlwrappers'] = true;
            }
        }

        if (filter_var(ini_get('xdebug.profiler_enabled'), FILTER_VALIDATE_BOOLEAN)) {
            $warnings['xdebug_profile'] = true;
        } elseif (XdebugHandler::isXdebugActive()) {
            $warnings['xdebug_loaded'] = true;
        }

        if (defined('PHP_WINDOWS_VERSION_BUILD')
            && (version_compare(PHP_VERSION, '7.2.23', '<')
            || (version_compare(PHP_VERSION, '7.3.0', '>=')
            && version_compare(PHP_VERSION, '7.3.10', '<')))) {
            $warnings['onedrive'] = PHP_VERSION;
        }

        if (!empty($errors)) {
            foreach ($errors as $error => $current) {
                switch ($error) {
                    case 'json':
                        $text = PHP_EOL."The json extension is missing.".PHP_EOL;
                        $text .= "Install it or recompile php without --disable-json";
                        break;

                    case 'phar':
                        $text = PHP_EOL."The phar extension is missing.".PHP_EOL;
                        $text .= "Install it or recompile php without --disable-phar";
                        break;

                    case 'filter':
                        $text = PHP_EOL."The filter extension is missing.".PHP_EOL;
                        $text .= "Install it or recompile php without --disable-filter";
                        break;

                    case 'hash':
                        $text = PHP_EOL."The hash extension is missing.".PHP_EOL;
                        $text .= "Install it or recompile php without --disable-hash";
                        break;

                    case 'iconv_mbstring':
                        $text = PHP_EOL."The iconv OR mbstring extension is required and both are missing.".PHP_EOL;
                        $text .= "Install either of them or recompile php without --disable-iconv";
                        break;

                    case 'php':
                        $text = PHP_EOL."Your PHP ({$current}) is too old, you must upgrade to PHP 5.3.2 or higher.";
                        break;

                    case 'allow_url_fopen':
                        $text = PHP_EOL."The allow_url_fopen setting is incorrect.".PHP_EOL;
                        $text .= "Add the following to the end of your `php.ini`:".PHP_EOL;
                        $text .= "    allow_url_fopen = On";
                        $displayIniMessage = true;
                        break;

                    case 'ioncube':
                        $text = PHP_EOL."Your ionCube Loader extension ($current) is incompatible with Phar files.".PHP_EOL;
                        $text .= "Upgrade to ionCube 4.0.9 or higher or remove this line (path may be different) from your `php.ini` to disable it:".PHP_EOL;
                        $text .= "    zend_extension = /usr/lib/php5/20090626+lfs/ioncube_loader_lin_5.3.so";
                        $displayIniMessage = true;
                        break;

                    case 'openssl':
                        $text = PHP_EOL."The openssl extension is missing, which means that secure HTTPS transfers are impossible.".PHP_EOL;
                        $text .= "If possible you should enable it or recompile php with --with-openssl";
                        break;

                    default:
                        throw new \InvalidArgumentException(sprintf("DiagnoseCommand: Unknown error type \"%s\". Please report at https://github.com/composer/composer/issues/new.", $error));
                }
                $out($text, 'error');
            }

            $output .= PHP_EOL;
        }

        if (!empty($warnings)) {
            foreach ($warnings as $warning => $current) {
                switch ($warning) {
                    case 'apc_cli':
                        $text = "The apc.enable_cli setting is incorrect.".PHP_EOL;
                        $text .= "Add the following to the end of your `php.ini`:".PHP_EOL;
                        $text .= "  apc.enable_cli = Off";
                        $displayIniMessage = true;
                        break;

                    case 'zlib':
                        $text = 'The zlib extension is not loaded, this can slow down Composer a lot.'.PHP_EOL;
                        $text .= 'If possible, enable it or recompile php with --with-zlib'.PHP_EOL;
                        $displayIniMessage = true;
                        break;

                    case 'sigchild':
                        $text = "PHP was compiled with --enable-sigchild which can cause issues on some platforms.".PHP_EOL;
                        $text .= "Recompile it without this flag if possible, see also:".PHP_EOL;
                        $text .= "  https://bugs.php.net/bug.php?id=22999";
                        break;

                    case 'curlwrappers':
                        $text = "PHP was compiled with --with-curlwrappers which will cause issues with HTTP authentication and GitHub.".PHP_EOL;
                        $text .= " Recompile it without this flag if possible";
                        break;

                    case 'php':
                        $text = "Your PHP ({$current}) is quite old, upgrading to PHP 5.3.4 or higher is recommended.".PHP_EOL;
                        $text .= " Composer works with 5.3.2+ for most people, but there might be edge case issues.";
                        break;

                    case 'openssl_version':
                        // Attempt to parse version number out, fallback to whole string value.
                        $opensslVersion = strstr(trim(strstr(OPENSSL_VERSION_TEXT, ' ')), ' ', true);
                        $opensslVersion = $opensslVersion ?: OPENSSL_VERSION_TEXT;

                        $text = "The OpenSSL library ({$opensslVersion}) used by PHP does not support TLSv1.2 or TLSv1.1.".PHP_EOL;
                        $text .= "If possible you should upgrade OpenSSL to version 1.0.1 or above.";
                        break;

                    case 'xdebug_loaded':
                        $text = "The xdebug extension is loaded, this can slow down Composer a little.".PHP_EOL;
                        $text .= " Disabling it when using Composer is recommended.";
                        break;

                    case 'xdebug_profile':
                        $text = "The xdebug.profiler_enabled setting is enabled, this can slow down Composer a lot.".PHP_EOL;
                        $text .= "Add the following to the end of your `php.ini` to disable it:".PHP_EOL;
                        $text .= "  xdebug.profiler_enabled = 0";
                        $displayIniMessage = true;
                        break;

                    case 'onedrive':
                        $text = "The Windows OneDrive folder is not supported on PHP versions below 7.2.23 and 7.3.10.".PHP_EOL;
                        $text .= "Upgrade your PHP ({$current}) to use this location with Composer.".PHP_EOL;
                        break;

                    default:
                        throw new \InvalidArgumentException(sprintf("DiagnoseCommand: Unknown warning type \"%s\". Please report at https://github.com/composer/composer/issues/new.", $warning));
                }
                $out($text, 'comment');
            }
        }

        if ($displayIniMessage) {
            $out($iniMessage, 'comment');
        }

        return !$warnings && !$errors ? true : $output;
    }

    /**
     * Check if allow_url_fopen is ON
     *
     * @return string|true
     */
    private function checkConnectivity()
    {
        if (!ini_get('allow_url_fopen')) {
            return '<info>SKIP</> <comment>Because allow_url_fopen is missing.</>';
        }

        return true;
    }

    /**
     * @return string|true
     */
    private function checkConnectivityAndComposerNetworkHttpEnablement()
    {
        $result = $this->checkConnectivity();
        if ($result !== true) {
            return $result;
        }

        $result = $this->checkComposerNetworkHttpEnablement();
        if ($result !== true) {
            return $result;
        }

        return true;
    }

    /**
     * Check if Composer network is enabled for HTTP/S
     *
     * @return string|true
     */
    private function checkComposerNetworkHttpEnablement()
    {
        if ((bool) Platform::getEnv('COMPOSER_DISABLE_NETWORK')) {
            return '<info>SKIP</> <comment>Network is disabled by COMPOSER_DISABLE_NETWORK.</>';
        }

        return true;
    }
}
Name	Size	Permission
AboutCommand.php	1308 bytes	0644
ArchiveCommand.php	7815 bytes	0644
BaseCommand.php	10355 bytes	0644
BaseDependencyCommand.php	9100 bytes	0644
CheckPlatformReqsCommand.php	8009 bytes	0644
ClearCacheCommand.php	2296 bytes	0644
ConfigCommand.php	35185 bytes	0644
CreateProjectCommand.php	24747 bytes	0644
DependsCommand.php	1820 bytes	0644
DiagnoseCommand.php	28887 bytes	0644
DumpAutoloadCommand.php	5285 bytes	0644
ExecCommand.php	3539 bytes	0644
FundCommand.php	5412 bytes	0644
GlobalCommand.php	4007 bytes	0644
HomeCommand.php	5652 bytes	0644
InitCommand.php	45986 bytes	0644
InstallCommand.php	7733 bytes	0644
LicensesCommand.php	7415 bytes	0644
OutdatedCommand.php	5084 bytes	0644
ProhibitsCommand.php	2006 bytes	0644
ReinstallCommand.php	8552 bytes	0644
RemoveCommand.php	14381 bytes	0644
RequireCommand.php	22863 bytes	0644
RunScriptCommand.php	5223 bytes	0644
ScriptAliasCommand.php	2199 bytes	0644
SearchCommand.php	4799 bytes	0644
SelfUpdateCommand.php	26293 bytes	0644
ShowCommand.php	55499 bytes	0644
StatusCommand.php	8495 bytes	0644
SuggestsCommand.php	4081 bytes	0644
UpdateCommand.php	16773 bytes	0644
ValidateCommand.php	11564 bytes	0644
File Content: DiagnoseCommand.php

File Content: `DiagnoseCommand.php`
