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<?php |
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declare(strict_types=1); |
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namespace AOE\Crawler\CrawlStrategy; |
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/* |
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* (c) 2020 AOE GmbH <[email protected]> |
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* |
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* This file is part of the TYPO3 Crawler Extension. |
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* |
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* It is free software; you can redistribute it and/or modify it under |
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* the terms of the GNU General Public License, either version 2 |
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* of the License, or any later version. |
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* |
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* For the full copyright and license information, please read the |
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* LICENSE.txt file that was distributed with this source code. |
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* |
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* The TYPO3 project - inspiring people to share! |
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*/ |
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use AOE\Crawler\Configuration\ExtensionConfigurationProvider; |
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use AOE\Crawler\Utility\PhpBinaryUtility; |
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use Psr\Http\Message\UriInterface; |
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use Psr\Log\LoggerAwareInterface; |
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use Psr\Log\LoggerAwareTrait; |
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use TYPO3\CMS\Core\Core\Environment; |
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use TYPO3\CMS\Core\Utility\CommandUtility; |
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use TYPO3\CMS\Core\Utility\ExtensionManagementUtility; |
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use TYPO3\CMS\Core\Utility\GeneralUtility; |
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/** |
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* Executes another process via shell_exec() to include cli/bootstrap.php which in turn |
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* includes the index.php for frontend. |
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*/ |
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class SubProcessExecutionStrategy implements LoggerAwareInterface |
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{ |
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use LoggerAwareTrait; |
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/** |
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* @var array |
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*/ |
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protected $extensionSettings; |
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public function __construct(?ExtensionConfigurationProvider $configurationProvider = null) |
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{ |
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$configurationProvider = $configurationProvider ?? GeneralUtility::makeInstance(ExtensionConfigurationProvider::class); |
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$settings = $configurationProvider->getExtensionConfiguration(); |
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$this->extensionSettings = is_array($settings) ? $settings : []; |
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} |
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/** |
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* Fetches a URL by calling a shell script. |
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* |
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* @param UriInterface $url |
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* @param string $crawlerId |
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* @return array|bool|mixed |
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*/ |
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public function fetchUrlContents(UriInterface $url, string $crawlerId) |
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{ |
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$url = (string)$url; |
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$parsedUrl = parse_url($url); |
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if ($parsedUrl === false) { |
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$this->logger->debug( |
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sprintf('Could not parse_url() for string "%s"', $url), |
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['crawlerId' => $crawlerId] |
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); |
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return false; |
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} |
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if (!in_array($parsedUrl['scheme'], ['', 'http', 'https'])) { |
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$this->logger->debug( |
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sprintf('Scheme does not match for url "%s"', $url), |
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['crawlerId' => $crawlerId] |
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); |
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return false; |
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} |
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if (!is_array($parsedUrl)) { |
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return []; |
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} |
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$requestHeaders = $this->buildRequestHeaders($parsedUrl, $crawlerId); |
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$commandParts = [ |
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ExtensionManagementUtility::extPath('crawler') . 'cli/bootstrap.php', |
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$this->getFrontendBasePath(), |
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$url, |
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base64_encode(serialize($requestHeaders)), |
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]; |
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$commandParts = CommandUtility::escapeShellArguments($commandParts); |
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$cmd = escapeshellcmd(PhpBinaryUtility::getPhpBinary()); |
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$cmd .= ' ' . implode(' ', $commandParts); |
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$startTime = microtime(true); |
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$content = $this->executeShellCommand($cmd); |
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$this->logger->info($url . ' ' . (microtime(true) - $startTime)); |
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return unserialize($content); |
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} |
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protected function buildRequestHeaders(array $url, string $crawlerId) |
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{ |
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$reqHeaders = []; |
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$reqHeaders[] = 'GET ' . $url['path'] . ($url['query'] ? '?' . $url['query'] : '') . ' HTTP/1.0'; |
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$reqHeaders[] = 'Host: ' . $url['host']; |
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$reqHeaders[] = 'Connection: close'; |
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if ($url['user'] != '') { |
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$reqHeaders[] = 'Authorization: Basic ' . base64_encode($url['user'] . ':' . $url['pass']); |
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} |
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$reqHeaders[] = 'X-T3crawler: ' . $crawlerId; |
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$reqHeaders[] = 'User-Agent: TYPO3 crawler'; |
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return $reqHeaders; |
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} |
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/** |
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* Executes a shell command and returns the outputted result. |
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* |
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* @param string $command Shell command to be executed |
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* @return string Outputted result of the command execution |
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*/ |
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protected function executeShellCommand($command) |
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{ |
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return shell_exec($command); |
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} |
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/** |
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* Gets the base path of the website frontend. |
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* (e.g. if you call http://mydomain.com/cms/index.php in |
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* the browser the base path is "/cms/") |
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* |
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* @return string Base path of the website frontend |
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*/ |
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protected function getFrontendBasePath() |
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{ |
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$frontendBasePath = '/'; |
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// Get the path from the extension settings: |
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if (isset($this->extensionSettings['frontendBasePath']) && $this->extensionSettings['frontendBasePath']) { |
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$frontendBasePath = $this->extensionSettings['frontendBasePath']; |
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// If empty, try to use config.absRefPrefix: |
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} elseif (isset($GLOBALS['TSFE']->absRefPrefix) && !empty($GLOBALS['TSFE']->absRefPrefix)) { |
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$frontendBasePath = $GLOBALS['TSFE']->absRefPrefix; |
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// If not in CLI mode the base path can be determined from $_SERVER environment: |
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} elseif (!Environment::isCli()) { |
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$frontendBasePath = GeneralUtility::getIndpEnv('TYPO3_SITE_PATH'); |
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} |
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// Base path must be '/<pathSegements>/': |
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if ($frontendBasePath !== '/') { |
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$frontendBasePath = '/' . ltrim($frontendBasePath, '/'); |
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$frontendBasePath = rtrim($frontendBasePath, '/') . '/'; |
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} |
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return $frontendBasePath; |
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} |
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} |
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AOEpeople /
crawler
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