owncloud/core

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lib/private/Http/Client/Client.php

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<?php
/**
 * @author Lukas Reschke <lukas@statuscode.ch>
 * @author Robin Appelman <icewind@owncloud.com>
 *
 * @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\Http\Client;

use GuzzleHttp\Client as GuzzleClient;
use GuzzleHttp\RequestOptions;
use OCP\Http\Client\IClient;
use OCP\ICertificateManager;
use OCP\IConfig;

/**
 * Class Client
 *
 * @package OC\Http
 */
class Client implements IClient {
    /** @var GuzzleClient */
    private $client;
    /** @var IConfig */
    private $config;
    /** @var ICertificateManager */
    private $certificateManager;
    /** @var array */
    private $defaultOptions;

    /**
     * @param IConfig $config
     * @param ICertificateManager $certificateManager
     * @param GuzzleClient $client
     */
    public function __construct(
        IConfig $config,
        ICertificateManager $certificateManager,
        GuzzleClient $client
    ) {
        $this->config = $config;
        $this->client = $client;
        $this->certificateManager = $certificateManager;
    }

    /**
     * Build options for a request
     *
     * @param array $options
     * @return array
     */
    private function buildRequestOptions(array $options): array {
        if (!$this->defaultOptions) {
            $this->setDefaultOptions();
        }

        $isStream = isset($options['stream']) && $options['stream'];
        if ($isStream) {
            $proxyHost = $this->config->getSystemValue('proxy', null);

            if ($proxyHost !== null && !isset($options[RequestOptions::PROXY])) {
                $options[RequestOptions::PROXY] = [
                    'http' => 'tcp://' . $proxyHost,
                    'https' => 'tcp://' . $proxyHost,
                ];
            }

            if ($proxyHost !== null && !isset($options['config']['stream_context']['http']['request_fulluri'])) {
                $options['config']['stream_context']['http']['request_fulluri'] = true;
            }

            $proxyUserPwd = $this->config->getSystemValue('proxyuserpwd', null);
            if ($proxyUserPwd !== null && !isset($options[RequestOptions::HEADERS]['Proxy-Authorization'])) {
                $auth = \base64_encode(\urldecode($proxyUserPwd));
                $options[RequestOptions::HEADERS]['Proxy-Authorization'] = "Basic $auth";
            }
        }

        return \array_merge($this->defaultOptions, $options);
    }

    /**
     * Get the default config for requests.
     */
    private function setDefaultOptions() {
        $options = [];
        // Either use user bundle or the system bundle if nothing is specified
        if ($this->certificateManager->listCertificates() !== []) {
            $options[RequestOptions::VERIFY] = $this->certificateManager->getAbsoluteBundlePath();
        } else {
            // If the instance is not yet setup we need to use the static path as
            // $this->certificateManager->getAbsoluteBundlePath() tries to instantiate
            // a view
            if ($this->config->getSystemValue('installed', false) && !\OCP\Util::needUpgrade()) {
                $options[RequestOptions::VERIFY] = $this->certificateManager->getAbsoluteBundlePath(null);
            } else {
                $options[RequestOptions::VERIFY] = \OC::$SERVERROOT . '/resources/config/ca-bundle.crt';
            }
        }

        $options[RequestOptions::HEADERS]['User-Agent'] = 'ownCloud Server Crawler';
        $proxyUri = $this->getProxyUri();
        if ($proxyUri !== '') {
            $noProxyList = $this->config->getSystemValue('proxy_ignore', []);
            if (!\is_array($noProxyList)) {
                $noProxyList = [];
            }
            $options[RequestOptions::PROXY] = [
                'http' => $proxyUri,
                'https' => $proxyUri,
                'no' => $noProxyList,
            ];
        }

        $this->defaultOptions = $options;
    }

    /**
     * Get the proxy URI
     *
     * @return string
     */
    private function getProxyUri() {
        $proxyHost = $this->config->getSystemValue('proxy', null);
        $proxyUserPwd = $this->config->getSystemValue('proxyuserpwd', null);
        $proxyUri = '';

        if ($proxyUserPwd !== null) {
            $proxyUri .= $proxyUserPwd . '@';
        }
        if ($proxyHost !== null) {
            $proxyUri .= $proxyHost;
        }

        return $proxyUri;
    }

    /**
     * Sends a GET request
     *
     * @param string $uri
     * @param array $options Array such as
     *              'query' => [
     *                  'field' => 'abc',
     *                  'other_field' => '123',
     *                  'file_name' => fopen('/path/to/file', 'r'),
     *              ],
     *              'headers' => [
     *                  'foo' => 'bar',
     *              ],
     *              'cookies' => ['
     *                  'foo' => 'bar',
     *              ],
     *              'allow_redirects' => [
     *                   'max'       => 10,  // allow at most 10 redirects.
     *                   'strict'    => true,     // use "strict" RFC compliant redirects.
     *                   'referer'   => true,     // add a Referer header
     *                   'protocols' => ['https'] // only allow https URLs
     *              ],
     *              'sink' => '/path/to/file', // save to a file or a stream
     *              'verify' => true, // bool or string to CA file
     *              'debug' => true,
     *              'timeout' => 5,
     * @return Response
     * @throws \Exception If the request could not get completed
     */
    public function get($uri, array $options = []) {
        $isStream = isset($options['stream']) && $options['stream'];
        $response = $this->client->get($uri, $this->buildRequestOptions($options));
        return new Response($response, $isStream);
    }

    /**
     * Sends a HEAD request
     *
     * @param string $uri
     * @param array $options Array such as
     *              'headers' => [
     *                  'foo' => 'bar',
     *              ],
     *              'cookies' => ['
     *                  'foo' => 'bar',
     *              ],
     *              'allow_redirects' => [
     *                   'max'       => 10,  // allow at most 10 redirects.
     *                   'strict'    => true,     // use "strict" RFC compliant redirects.
     *                   'referer'   => true,     // add a Referer header
     *                   'protocols' => ['https'] // only allow https URLs
     *              ],
     *              'sink' => '/path/to/file', // save to a file or a stream
     *              'verify' => true, // bool or string to CA file
     *              'debug' => true,
     *              'timeout' => 5,
     * @return Response
     * @throws \Exception If the request could not get completed
     */
    public function head($uri, $options = []) {
        $response = $this->client->head($uri, $this->buildRequestOptions($options));
        return new Response($response);
    }

    /**
     * Sends a POST request
     *
     * @param string $uri
     * @param array $options Array such as
     *              'multipart' => [
     *                  ['name' => 'field', 'contents' => 'abc'],
     *                  ['name' => 'other_field', 'contents' => '123'],
     *                  ['name' => 'file_name', 'contents' => fopen('/path/to/file', 'r'), 'filename' => 'custom_name.txt'],
     *              ],
     *              'headers' => [
     *                  'foo' => 'bar',
     *              ],
     *              'cookies' => ['
     *                  'foo' => 'bar',
     *              ],
     *              'allow_redirects' => [
     *                   'max'       => 10,  // allow at most 10 redirects.
     *                   'strict'    => true,     // use "strict" RFC compliant redirects.
     *                   'referer'   => true,     // add a Referer header
     *                   'protocols' => ['https'] // only allow https URLs
     *              ],
     *              'sink' => '/path/to/file', // save to a file or a stream
     *              'verify' => true, // bool or string to CA file
     *              'debug' => true,
     *              'timeout' => 5,
     * @return Response
     * @throws \Exception If the request could not get completed
     */
    public function post($uri, array $options = []) {
        $response = $this->client->post($uri, $this->buildRequestOptions($options));
        return new Response($response);
    }

    /**
     * Sends a PUT request
     *
     * @param string $uri
     * @param array $options Array such as
     *              'multipart' => [
     *                  ['name' => 'field', 'contents' => 'abc'],
     *                  ['name' => 'other_field', 'contents' => '123'],
     *                  ['name' => 'file_name', 'contents' => fopen('/path/to/file', 'r'), 'filename' => 'custom_name.txt'],
     *              ],
     *              'headers' => [
     *                  'foo' => 'bar',
     *              ],
     *              'cookies' => ['
     *                  'foo' => 'bar',
     *              ],
     *              'allow_redirects' => [
     *                   'max'       => 10,  // allow at most 10 redirects.
     *                   'strict'    => true,     // use "strict" RFC compliant redirects.
     *                   'referer'   => true,     // add a Referer header
     *                   'protocols' => ['https'] // only allow https URLs
     *              ],
     *              'sink' => '/path/to/file', // save to a file or a stream
     *              'verify' => true, // bool or string to CA file
     *              'debug' => true,
     *              'timeout' => 5,
     * @return Response
     * @throws \Exception If the request could not get completed
     */
    public function put($uri, array $options = []) {
        $response = $this->client->put($uri, $this->buildRequestOptions($options));
        return new Response($response);
    }

    /**
     * Sends a DELETE request
     *
     * @param string $uri
     * @param array $options Array such as
     *              'multipart' => [
     *                  ['name' => 'field', 'contents' => 'abc'],
     *                  ['name' => 'other_field', 'contents' => '123'],
     *                  ['name' => 'file_name', 'contents' => fopen('/path/to/file', 'r'), 'filename' => 'custom_name.txt'],
     *              ],
     *              'headers' => [
     *                  'foo' => 'bar',
     *              ],
     *              'cookies' => ['
     *                  'foo' => 'bar',
     *              ],
     *              'allow_redirects' => [
     *                   'max'       => 10,  // allow at most 10 redirects.
     *                   'strict'    => true,     // use "strict" RFC compliant redirects.
     *                   'referer'   => true,     // add a Referer header
     *                   'protocols' => ['https'] // only allow https URLs
     *              ],
     *              'sink' => '/path/to/file', // save to a file or a stream
     *              'verify' => true, // bool or string to CA file
     *              'debug' => true,
     *              'timeout' => 5,
     * @return Response
     * @throws \Exception If the request could not get completed
     */
    public function delete($uri, array $options = []) {
        $response = $this->client->delete($uri, $this->buildRequestOptions($options));
        return new Response($response);
    }

    /**
     * Sends a options request
     *
     * @param string $uri
     * @param array $options Array such as
     *              'multipart' => [
     *                  ['name' => 'field', 'contents' => 'abc'],
     *                  ['name' => 'other_field', 'contents' => '123'],
     *                  ['name' => 'file_name', 'contents' => fopen('/path/to/file', 'r'), 'filename' => 'custom_name.txt'],
     *              ],
     *              'headers' => [
     *                  'foo' => 'bar',
     *              ],
     *              'cookies' => ['
     *                  'foo' => 'bar',
     *              ],
     *              'allow_redirects' => [
     *                   'max'       => 10,  // allow at most 10 redirects.
     *                   'strict'    => true,     // use "strict" RFC compliant redirects.
     *                   'referer'   => true,     // add a Referer header
     *                   'protocols' => ['https'] // only allow https URLs
     *              ],
     *              'sink' => '/path/to/file', // save to a file or a stream
     *              'verify' => true, // bool or string to CA file
     *              'debug' => true,
     *              'timeout' => 5,
     * @return Response
     * @throws \Exception If the request could not get completed
     */
    public function options($uri, array $options = []) {
        $response = $this->client->request('options', $uri, $this->buildRequestOptions($options));
        return new Response($response);
    }
}