Jgut\Spiral\Transport\Curl

Complexity

Total Complexity

30

Size/Duplication

Total Lines	262
Duplicated Lines	0 %

Coupling/Cohesion

Components	2
Dependencies	3

Importance

Changes

0

11 Methods

Rating	Name	Duplication	Size	Complexity
A	__construct()	0	4	1
A	createFromDefaults()	0	4	1
B	request()	0	31	5
A	resetHandler()	0	19	4
A	execute()	0	4	2
A	setMethod()	0	20	4
A	forgeOptions()	0	10	4
A	forgeHeaders()	0	10	3
A	responseInfo()	0	12	3
A	__destruct()	0	4	1
A	close()	0	8	2

<?php

/*
 * A PSR7 aware cURL client (https://github.com/juliangut/spiral).
 *
 * @license BSD-3-Clause
 * @link https://github.com/juliangut/spiral
 * @author Julián Gutiérrez <juliangut@gmail.com>
 */

namespace Jgut\Spiral\Transport;

use Fig\Http\Message\RequestMethodInterface;
use Jgut\Spiral\Exception\TransportException;
use Jgut\Spiral\Option\OptionInterface;

/**
 * cURL transport handler.
 */
class Curl extends AbstractTransport
{
    /**
     * cURL error map.
     *
     * @var array
     */
    protected static $errorCategoryMap = [
        CURLE_FTP_WEIRD_SERVER_REPLY      => 'FTP',
        CURLE_FTP_ACCESS_DENIED           => 'FTP',
        CURLE_FTP_USER_PASSWORD_INCORRECT => 'FTP',
        CURLE_FTP_WEIRD_PASS_REPLY        => 'FTP',
        CURLE_FTP_WEIRD_USER_REPLY        => 'FTP',
        CURLE_FTP_WEIRD_PASV_REPLY        => 'FTP',
        CURLE_FTP_WEIRD_227_FORMAT        => 'FTP',
        CURLE_FTP_CANT_GET_HOST           => 'FTP',
        CURLE_FTP_CANT_RECONNECT          => 'FTP',
        CURLE_FTP_COULDNT_SET_BINARY      => 'FTP',
        CURLE_FTP_COULDNT_RETR_FILE       => 'FTP',
        CURLE_FTP_WRITE_ERROR             => 'FTP',
        CURLE_FTP_QUOTE_ERROR             => 'FTP',
        CURLE_FTP_COULDNT_STOR_FILE       => 'FTP',
        CURLE_FTP_COULDNT_SET_ASCII       => 'FTP',
        CURLE_FTP_PORT_FAILED             => 'FTP',
        CURLE_FTP_COULDNT_USE_REST        => 'FTP',
        CURLE_FTP_COULDNT_GET_SIZE        => 'FTP',
        CURLE_FTP_BAD_DOWNLOAD_RESUME     => 'FTP',
        CURLE_FTP_SSL_FAILED              => 'FTP',
        CURLE_SSL_CONNECT_ERROR           => 'SSL',
        CURLE_SSL_PEER_CERTIFICATE        => 'SSL',
        CURLE_SSL_ENGINE_NOTFOUND         => 'SSL',
        CURLE_SSL_ENGINE_SETFAILED        => 'SSL',
        CURLE_SSL_CERTPROBLEM             => 'SSL',
        CURLE_SSL_CIPHER                  => 'SSL',
        CURLE_SSL_CACERT                  => 'SSL',
        CURLE_LDAP_CANNOT_BIND            => 'LDAP',
        CURLE_LDAP_SEARCH_FAILED          => 'LDAP',
        CURLE_LDAP_INVALID_URL            => 'LDAP',
        CURLE_COULDNT_RESOLVE_PROXY       => 'proxy',
    ];

    /**
     * Default options.
     *
     * @var array
     */
    protected static $defaultOptions = [
        CURLOPT_VERBOSE           => false,
        CURLOPT_HTTP_VERSION      => 1.1,
        CURLOPT_USERAGENT         => self::class,
        CURLOPT_CONNECTTIMEOUT    => 60,
        CURLOPT_TIMEOUT           => 60,
        CURLOPT_CRLF              => false,
        CURLOPT_SSLVERSION        => 0,
        CURLOPT_SSL_VERIFYPEER    => true,
        CURLOPT_SSL_VERIFYHOST    => 2,
        CURLOPT_AUTOREFERER       => true,
        CURLOPT_FOLLOWLOCATION    => true,
        CURLOPT_MAXREDIRS         => 10,
        CURLOPT_UNRESTRICTED_AUTH => false,
        CURLOPT_RETURNTRANSFER    => true,
        CURLOPT_HEADER            => true,
        CURLOPT_FORBID_REUSE      => false,
        CURLOPT_FRESH_CONNECT     => false,
        CURLOPT_MAXCONNECTS       => 5,
    ];

    /**
     * cURL resource handler.
     *
     * @var resource
     */
    private $handler;

    /**
     * Create cURL transport manager.
     *
     * @param array $options
     *
     * @throws \Jgut\Spiral\Exception\OptionException
     */
    public function __construct(array $options = [])
    {
        $this->setOptions($options);
    }

    /**
     * Create cURL transport manager with default options.
     *
     * @return static
     */
    public static function createFromDefaults()
    {
        return new static(static::$defaultOptions);
    }

    /**
     * {@inheritdoc}
     *
     * @throws TransportException
     */
    public function request($method, $uri, array $headers = [], $requestBody = null)
    {
        $this->resetHandler();

        $method = strtoupper($method);
        $this->setMethod($method);

        $this->forgeOptions($this->options);
        $this->forgeHeaders($headers);

        if ($requestBody !== null && $requestBody) {
            curl_setopt($this->handler, CURLOPT_POSTFIELDS, $requestBody);
        }
        curl_setopt($this->handler, CURLOPT_URL, $uri);

        $response = $this->execute();

        if (curl_errno($this->handler) !== CURLE_OK) {
            $errCode = curl_errno($this->handler);

            $exception = new TransportException(
                curl_error($this->handler),
                $errCode,
                array_key_exists($errCode, static::$errorCategoryMap) ? static::$errorCategoryMap [$errCode] : ''
            );

            throw $exception;
        }

        return $response;
    }

    /**
     * Create or reuse existing handle.
     *
     * @return resource
     */
    protected function resetHandler()
    {
        if (is_resource($this->handler)) {
            if ($this->hasOption(CURLOPT_FORBID_REUSE, true)
                || $this->hasOption(CURLOPT_FRESH_CONNECT, true)
            ) {
                // on using CURLOPT_FRESH_CONNECT or CURLOPT_FORBID_REUSE
                // a curl_reset() is 20-30% slower than closing and reinit
                $this->close();
                $this->handler = curl_init();
            } else {
                curl_reset($this->handler);
            }
        } else {
            $this->handler = curl_init();
        }

        return $this->handler;
    }

    /**
     * Isolate curl execution.
     *
     * @return string
     */
    protected function execute()
    {
        return curl_exec($this->handler) ?: '';
    }

    /**
     * Set HTTP method on handler.
     *
     * @param string $method
     */
    protected function setMethod($method)
    {
        switch ($method) {
            case RequestMethodInterface::METHOD_HEAD:
                curl_setopt($this->handler, CURLOPT_NOBODY, true);
                break;

            case RequestMethodInterface::METHOD_GET:
                curl_setopt($this->handler, CURLOPT_HTTPGET, true);
                break;

            case RequestMethodInterface::METHOD_POST:
                curl_setopt($this->handler, CURLOPT_POST, true);
                curl_setopt($this->handler, CURLOPT_CUSTOMREQUEST, RequestMethodInterface::METHOD_POST);
                break;

            default:
                curl_setopt($this->handler, CURLOPT_CUSTOMREQUEST, $method);
        }
    }

    /**
     * Set cURL options on handler.
     *
     * @param OptionInterface[] $options
     */
    protected function forgeOptions(array $options)
    {
        foreach ($options as $option) {
            curl_setopt($this->handler, $option->getOption(), $option->getValue());
        }

        if ($this->hasOption(CURLOPT_USERPWD) && !$this->hasOption(CURLOPT_HTTPAUTH, CURLAUTH_BASIC)) {
            curl_setopt($this->handler, CURLOPT_HTTPAUTH, CURLAUTH_BASIC);
        }
    }

    /**
     * Set HTTP headers on handler.
     *
     * @param array $headers
     */
    protected function forgeHeaders(array $headers)
    {
        $headerList = [];

        foreach ($headers as $header => $value) {
            $headerList[] = sprintf('%s: %s', $header, is_array($value) ? implode(', ', $value) : (string) $value);
        }

        curl_setopt($this->handler, CURLOPT_HTTPHEADER, $headerList);
    }

    /**
     * {@inheritdoc}
     */
    public function responseInfo($option = null)
    {
        if (!is_resource($this->handler)) {
            return;
        }

        if ($option !== null) {
            return curl_getinfo($this->handler, $option);
        }

        return curl_getinfo($this->handler);
    }

    /**
     * Always free resources on destruction.
     */
    public function __destruct()
    {
        $this->close();
    }

    /**
     * {@inheritdoc}
     */
    public function close()
    {
        if (is_resource($this->handler)) {
            curl_close($this->handler);

            $this->handler = null;
        }
    }
}