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<?php |
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/** |
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* This file is part of the core-library package. |
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* |
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* (c) 2018 WEBEWEB |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace WBW\Library\Core\Network\CURL\Request; |
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use DateTime; |
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use WBW\Library\Core\Argument\ArgumentHelper; |
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use WBW\Library\Core\Exception\IO\InvalidHTTPMethodException; |
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use WBW\Library\Core\Exception\Network\CURLRequestCallException; |
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use WBW\Library\Core\Network\CURL\Configuration\CURLConfiguration; |
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use WBW\Library\Core\Network\CURL\Response\CURLResponse; |
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use WBW\Library\Core\Network\HTTP\HTTPInterface; |
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/** |
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* Abstract cURL request. |
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* |
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* @author webeweb <https://github.com/webeweb/> |
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* @package WBW\Library\Core\Network\CURL\Request |
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* @abstract |
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*/ |
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abstract class AbstractCURLRequest implements CURLRequestInterface, HTTPInterface { |
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/** |
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* Content-type application/x-www-form-urlencoded |
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* |
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* @var string |
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*/ |
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const CONTENT_TYPE_X_WWW_FORM_URLENCODED = "Content-Type: application/x-www-form-urlencoded"; |
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/** |
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* Configuration. |
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* |
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* @var CURLConfiguration |
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*/ |
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private $configuration; |
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/** |
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* Headers. |
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* |
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* @var array |
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*/ |
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private $headers = []; |
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/** |
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* Method. |
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* |
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* @var string |
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*/ |
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private $method = self::HTTP_METHOD_GET; |
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/** |
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* POST data. |
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* |
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* @var array |
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*/ |
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private $postData = []; |
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/** |
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* Query data. |
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* |
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* @var array |
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*/ |
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private $queryData = []; |
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/** |
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* Resource path. |
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* |
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* @var string |
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*/ |
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private $resourcePath; |
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/** |
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* Constructor. |
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* |
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* @param string $method The Method. |
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* @param CURLConfiguration $configuration The configuration. |
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* @param string $resourcePath The resource path. |
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* @throws InvalidHTTPMethodException Throws an invalid HTTP method exception if the method is not implemented. |
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*/ |
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protected function __construct($method, CURLConfiguration $configuration, $resourcePath) { |
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$this->setConfiguration($configuration); |
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$this->setMethod($method); |
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$this->setResourcePath($resourcePath); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function addHeader($name, $value) { |
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ArgumentHelper::isTypeOf($name, ArgumentHelper::ARGUMENT_STRING); |
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$this->headers[$name] = $value; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function addPostData($name, $value) { |
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ArgumentHelper::isTypeOf($name, ArgumentHelper::ARGUMENT_STRING); |
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$this->postData[$name] = $value; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function addQueryData($name, $value) { |
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ArgumentHelper::isTypeOf($name, ArgumentHelper::ARGUMENT_STRING); |
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$this->queryData[$name] = $value; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function call() { |
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// Define the necessary argurments. |
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$curlHeaders = $this->mergeHeaders(); |
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$curlPOSTData = http_build_query($this->getPostData()); |
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// |
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if (true === in_array("Content-Type: application/json", $curlHeaders)) { |
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$curlPOSTData = json_encode($this->getPostData()); |
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} |
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// Initialize the URL. |
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$curlURL = $this->mergeURL(); |
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if (0 < count($this->getQueryData())) { |
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$curlURL = implode("?", [$curlURL, http_build_query($this->getQueryData())]); |
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} |
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// Initialize cURL. |
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$stream = curl_init(); |
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// Set the connect timeout. |
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if (0 < $this->getConfiguration()->getConnectTimeout()) { |
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curl_setopt($stream, CURLOPT_CONNECTTIMEOUT, $this->getConfiguration()->getConnectTimeout()); |
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} |
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// Set the encoding. |
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if (true === $this->getConfiguration()->getAllowEncoding()) { |
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curl_setopt($stream, CURLOPT_ENCODING, ""); |
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} |
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// Set the HTTP headers. |
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curl_setopt($stream, CURLOPT_HTTPHEADER, $curlHeaders); |
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// Set the post. |
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switch ($this->getMethod()) { |
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case self::HTTP_METHOD_DELETE: |
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case self::HTTP_METHOD_OPTIONS: |
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case self::HTTP_METHOD_PATCH: |
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case self::HTTP_METHOD_PUT: |
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curl_setopt($stream, CURLOPT_CUSTOMREQUEST, $this->getMethod()); |
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curl_setopt($stream, CURLOPT_POSTFIELDS, $curlPOSTData); |
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break; |
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case self::HTTP_METHOD_HEAD: |
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curl_setopt($stream, CURLOPT_NOBODY, true); |
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break; |
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case self::HTTP_METHOD_POST: |
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curl_setopt($stream, CURLOPT_POST, true); |
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curl_setopt($stream, CURLOPT_POSTFIELDS, $curlPOSTData); |
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break; |
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} |
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// Set the proxy. |
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if (null !== $this->getConfiguration()->getProxyHost()) { |
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curl_setopt($stream, CURLOPT_PROXY, $this->getConfiguration()->getProxyHost()); |
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} |
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if (null !== $this->getConfiguration()->getProxyPort()) { |
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curl_setopt($stream, CURLOPT_PROXYPORT, $this->getConfiguration()->getProxyPort()); |
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} |
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if (null !== $this->getConfiguration()->getProxyType()) { |
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curl_setopt($stream, CURLOPT_PROXYTYPE, $this->getConfiguration()->getProxyType()); |
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} |
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if (null !== $this->getConfiguration()->getProxyUsername()) { |
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curl_setopt($stream, CURLOPT_PROXYUSERPWD, implode(":", [$this->getConfiguration()->getProxyUsername(), $this->getConfiguration()->getProxyPassword()])); |
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} |
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// Set the return. |
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curl_setopt($stream, CURLOPT_RETURNTRANSFER, true); |
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// Set the SSL verification. |
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if (false === $this->getConfiguration()->getSslVerification()) { |
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curl_setopt($stream, CURLOPT_SSL_VERIFYHOST, 0); |
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curl_setopt($stream, CURLOPT_SSL_VERIFYPEER, 0); |
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} |
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// Set the request timeout. |
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if (0 < $this->getConfiguration()->getRequestTimeout()) { |
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curl_setopt($stream, CURLOPT_TIMEOUT, $this->getConfiguration()->getRequestTimeout()); |
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} |
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// Set the URL. |
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curl_setopt($stream, CURLOPT_URL, $curlURL); |
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// Set the user agent. |
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curl_setopt($stream, CURLOPT_USERAGENT, $this->getConfiguration()->getUserAgent()); |
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// Get the HTTP response headers. |
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curl_setopt($stream, CURLOPT_HEADER, 1); |
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// Set the verbose. |
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if (true === $this->getConfiguration()->getDebug()) { |
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curl_setopt($stream, CURLOPT_STDERR, fopen($this->getConfiguration()->getDebugFile(), "a")); |
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curl_setopt($stream, CURLOPT_VERBOSE, 0); |
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$msg = (new DateTime())->format("c") . " [DEBUG] " . $curlURL . PHP_EOL . "HTTP request body ~BEGIN~" . PHP_EOL . print_r($curlPOSTData, true) . PHP_EOL . "~END~" . PHP_EOL; |
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error_log($msg, 3, $this->getConfiguration()->getDebugFile()); |
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} else { |
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if (true === $this->getConfiguration()->getVerbose()) { |
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curl_setopt($stream, CURLOPT_VERBOSE, 1); |
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} else { |
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curl_setopt($stream, CURLOPT_VERBOSE, 0); |
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} |
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} |
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// Make the request. |
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$curlExec = curl_exec($stream); |
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$httpHeadSize = curl_getinfo($stream, CURLINFO_HEADER_SIZE); |
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$httpHead = $this->parseheader(substr($curlExec, 0, $httpHeadSize)); |
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$httpBody = substr($curlExec, $httpHeadSize); |
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$curlInfo = curl_getinfo($stream); |
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// |
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if (true === $this->getConfiguration()->getDebug()) { |
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$msg = (new DateTime())->format("c") . " [DEBUG] " . $curlURL . PHP_EOL . "HTTP response body ~BEGIN~" . PHP_EOL . print_r($httpBody, true) . PHP_EOL . "~END~" . PHP_EOL; |
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error_log($msg, 3, $this->getConfiguration()->getDebugFile()); |
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} |
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// Initialize the response. |
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$response = new CURLResponse(); |
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$response->setRequestBody($curlPOSTData); |
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$response->setRequestHeader($curlHeaders); |
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$response->setRequestURL($curlURL); |
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$response->setResponseBody($httpBody); |
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$response->setResponseHeader($httpHead); |
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$response->setResponseInfo($curlInfo); |
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// Check HTTP code. |
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if (200 <= $curlInfo["http_code"] && $curlInfo["http_code"] <= 299) { |
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// Return the response. |
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return $response; |
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} |
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// Initialize the parameters. |
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$cde = $curlInfo["http_code"]; |
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$msg = curl_errno($stream); |
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// Check the HTTP code. |
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if (0 === $curlInfo["http_code"]) { |
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if (false === empty(curl_error($stream))) { |
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$msg = "Call to " . $curlURL . " failed : " . curl_error($stream); |
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} else { |
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$msg = "Call to " . $curlURL . " failed, but for an unknown reason. This could happen if you are disconnected from the network."; |
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} |
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} |
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// Throw the exception. |
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throw new CURLRequestCallException($msg, $cde, $response); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function clearHeaders() { |
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return $this->setHeaders(); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function clearPostData() { |
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return $this->setPostData(); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function clearQueryData() { |
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return $this->setQueryData(); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getConfiguration() { |
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return $this->configuration; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getHeaders() { |
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return $this->headers; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getMethod() { |
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return $this->method; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getPostData() { |
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return $this->postData; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getQueryData() { |
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return $this->queryData; |
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} |
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|
329
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|
|
/** |
|
330
|
|
|
* {@inheritdoc} |
|
331
|
|
|
*/ |
|
332
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|
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public function getResourcePath() { |
|
333
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|
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return $this->resourcePath; |
|
334
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|
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} |
|
335
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|
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|
|
336
|
|
|
/** |
|
337
|
|
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* Merge the headers. |
|
338
|
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* |
|
339
|
|
|
* @return array Returns the meged headers. |
|
340
|
|
|
*/ |
|
341
|
|
|
private function mergeHeaders() { |
|
342
|
|
|
|
|
343
|
|
|
// Initialize the merged headers. |
|
344
|
|
|
$mergedHeaders = []; |
|
345
|
|
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|
|
346
|
|
|
// Handle each header. |
|
347
|
|
|
foreach (array_merge($this->getConfiguration()->getHeaders(), $this->getHeaders()) as $key => $value) { |
|
348
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|
|
$mergedHeaders[] = implode(": ", [$key, $value]); |
|
349
|
|
|
} |
|
350
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|
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|
|
351
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|
|
// Return the merged headers. |
|
352
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|
|
return $mergedHeaders; |
|
353
|
|
|
} |
|
354
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|
|
|
355
|
|
|
/** |
|
356
|
|
|
* Merge the URL. |
|
357
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|
|
* |
|
358
|
|
|
* @return string Returns the merged URL. |
|
359
|
|
|
*/ |
|
360
|
|
|
private function mergeURL() { |
|
361
|
|
|
|
|
362
|
|
|
// Initialize the merged URL. |
|
363
|
|
|
$mergedURL = []; |
|
364
|
|
|
$mergedURL[] = $this->getConfiguration()->getHost(); |
|
365
|
|
|
if (null !== $this->getResourcePath() && "" !== $this->getResourcePath()) { |
|
366
|
|
|
$mergedURL[] = $this->getResourcePath(); |
|
367
|
|
|
} |
|
368
|
|
|
|
|
369
|
|
|
// Return the merged URL. |
|
370
|
|
|
return implode("/", $mergedURL); |
|
371
|
|
|
} |
|
372
|
|
|
|
|
373
|
|
|
/** |
|
374
|
|
|
* Parse the raw header. |
|
375
|
|
|
* |
|
376
|
|
|
* @param string $rawHeader The raw header. |
|
377
|
|
|
* @return array Returns the headers. |
|
378
|
|
|
*/ |
|
379
|
|
|
private function parseHeader($rawHeader) { |
|
380
|
|
|
|
|
381
|
|
|
// Initialize the headers. |
|
382
|
|
|
$headers = []; |
|
383
|
|
|
$key = ""; |
|
384
|
|
|
|
|
385
|
|
|
// Handle each header. |
|
386
|
|
|
foreach (explode("\n", $rawHeader) as $h) { |
|
387
|
|
|
$h = explode(":", $h, 2); |
|
388
|
|
|
if (true === isset($h[1])) { |
|
389
|
|
|
if (false === isset($headers[$h[0]])) { |
|
390
|
|
|
$headers[$h[0]] = trim($h[1]); |
|
391
|
|
|
} elseif (true === is_array($headers[$h[0]])) { |
|
392
|
|
|
$headers[$h[0]] = array_merge($headers[$h[0]], [trim($h[1])]); |
|
393
|
|
|
} else { |
|
394
|
|
|
$headers[$h[0]] = array_merge([$headers[$h[0]]], [trim($h[1])]); |
|
395
|
|
|
} |
|
396
|
|
|
$key = $h[0]; |
|
397
|
|
|
} else { |
|
398
|
|
|
if ("\t" === substr($h[0], 0, 1)) { |
|
399
|
|
|
$headers[$key] .= "\r\n\t" . trim($h[0]); |
|
400
|
|
|
} elseif (!$key) { |
|
401
|
|
|
$headers[0] = trim($h[0]); |
|
402
|
|
|
} |
|
403
|
|
|
trim($h[0]); |
|
404
|
|
|
} |
|
405
|
|
|
} |
|
406
|
|
|
|
|
407
|
|
|
// Return the headers. |
|
408
|
|
|
return $headers; |
|
409
|
|
|
} |
|
410
|
|
|
|
|
411
|
|
|
/** |
|
412
|
|
|
* {@inheritdoc} |
|
413
|
|
|
*/ |
|
414
|
|
|
public function removeHeader($name) { |
|
415
|
|
|
if (true === array_key_exists($name, $this->headers)) { |
|
416
|
|
|
unset($this->headers[$name]); |
|
417
|
|
|
} |
|
418
|
|
|
return $this; |
|
419
|
|
|
} |
|
420
|
|
|
|
|
421
|
|
|
/** |
|
422
|
|
|
* {@inheritdoc} |
|
423
|
|
|
*/ |
|
424
|
|
|
public function removePostData($name) { |
|
425
|
|
|
if (true === array_key_exists($name, $this->postData)) { |
|
426
|
|
|
unset($this->postData[$name]); |
|
427
|
|
|
} |
|
428
|
|
|
return $this; |
|
429
|
|
|
} |
|
430
|
|
|
|
|
431
|
|
|
/** |
|
432
|
|
|
* {@inheritdoc} |
|
433
|
|
|
*/ |
|
434
|
|
|
public function removeQueryData($name) { |
|
435
|
|
|
if (true === array_key_exists($name, $this->queryData)) { |
|
436
|
|
|
unset($this->queryData[$name]); |
|
437
|
|
|
} |
|
438
|
|
|
return $this; |
|
439
|
|
|
} |
|
440
|
|
|
|
|
441
|
|
|
/** |
|
442
|
|
|
* Set the configuration. |
|
443
|
|
|
* |
|
444
|
|
|
* @param CURLConfiguration $configuration The configuration. |
|
445
|
|
|
* @return AbstractCURLRequest Returns this request. |
|
446
|
|
|
*/ |
|
447
|
|
|
protected function setConfiguration(CURLConfiguration $configuration) { |
|
448
|
|
|
$this->configuration = $configuration; |
|
449
|
|
|
return $this; |
|
450
|
|
|
} |
|
451
|
|
|
|
|
452
|
|
|
/** |
|
453
|
|
|
* Set the headers. |
|
454
|
|
|
* |
|
455
|
|
|
* @param array $headers The headers. |
|
456
|
|
|
* @return AbstractCURLRequest Returns this request. |
|
457
|
|
|
*/ |
|
458
|
|
|
protected function setHeaders(array $headers = []) { |
|
459
|
|
|
$this->headers = $headers; |
|
460
|
|
|
return $this; |
|
461
|
|
|
} |
|
462
|
|
|
|
|
463
|
|
|
/** |
|
464
|
|
|
* Set the method. |
|
465
|
|
|
* |
|
466
|
|
|
* @param string $method The method. |
|
467
|
|
|
* @return AbstractCURLRequest Returns this request. |
|
468
|
|
|
* @throws InvalidHTTPMethodException Throws an invalid HTTP method exception if the method is not implemented. |
|
469
|
|
|
*/ |
|
470
|
|
|
protected function setMethod($method) { |
|
471
|
|
|
switch ($method) { |
|
472
|
|
|
case self::HTTP_METHOD_DELETE: |
|
473
|
|
|
case self::HTTP_METHOD_GET: |
|
474
|
|
|
case self::HTTP_METHOD_HEAD: |
|
475
|
|
|
case self::HTTP_METHOD_OPTIONS: |
|
476
|
|
|
case self::HTTP_METHOD_PATCH: |
|
477
|
|
|
case self::HTTP_METHOD_POST: |
|
478
|
|
|
case self::HTTP_METHOD_PUT: |
|
479
|
|
|
$this->method = $method; |
|
480
|
|
|
break; |
|
481
|
|
|
default: |
|
482
|
|
|
throw new InvalidHTTPMethodException($method); |
|
483
|
|
|
} |
|
484
|
|
|
return $this; |
|
485
|
|
|
} |
|
486
|
|
|
|
|
487
|
|
|
/** |
|
488
|
|
|
* Set the POST data. |
|
489
|
|
|
* |
|
490
|
|
|
* @param array $postData The POST data. |
|
491
|
|
|
* @return AbstractCURLRequest Returns this request. |
|
492
|
|
|
*/ |
|
493
|
|
|
protected function setPostData(array $postData = []) { |
|
494
|
|
|
$this->postData = $postData; |
|
495
|
|
|
return $this; |
|
496
|
|
|
} |
|
497
|
|
|
|
|
498
|
|
|
/** |
|
499
|
|
|
* Set the query data. |
|
500
|
|
|
* |
|
501
|
|
|
* @param array $queryData The query data. |
|
502
|
|
|
* @return AbstractCURLRequest Returns this request. |
|
503
|
|
|
*/ |
|
504
|
|
|
protected function setQueryData(array $queryData = []) { |
|
505
|
|
|
$this->queryData = $queryData; |
|
506
|
|
|
return $this; |
|
507
|
|
|
} |
|
508
|
|
|
|
|
509
|
|
|
/** |
|
510
|
|
|
* {@inheritdoc} |
|
511
|
|
|
*/ |
|
512
|
|
|
public function setResourcePath($resourcePath) { |
|
513
|
|
|
$this->resourcePath = preg_replace("/^\//", "", trim($resourcePath)); |
|
514
|
|
|
return $this; |
|
515
|
|
|
} |
|
516
|
|
|
|
|
517
|
|
|
} |
|
518
|
|
|
|
If you return a value from a function or method, it should be a sub-type of the type that is given by the parent type f.e. an interface, or abstract method. This is more formally defined by the Lizkov substitution principle, and guarantees that classes that depend on the parent type can use any instance of a child type interchangably. This principle also belongs to the SOLID principles for object oriented design.
Let’s take a look at an example:
Our function
my_functionexpects aPostobject, and outputs the author of the post. The base classPostreturns a simple string and outputting a simple string will work just fine. However, the child classBlogPostwhich is a sub-type ofPostinstead decided to return anobject, and is therefore violating the SOLID principles. If aBlogPostwere passed tomy_function, PHP would not complain, but ultimately fail when executing thestrtouppercall in its body.