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<?php |
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namespace WebServCo\Framework; |
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use WebServCo\Framework\Http\Method; |
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use WebServCo\Framework\Exceptions\ApplicationException; |
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final class CurlBrowser implements |
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\WebServCo\Framework\Interfaces\HttpBrowserInterface |
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{ |
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protected $debug; |
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protected $skipSslVerification; |
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protected $requestHeaders; |
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protected $method; |
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protected $postData; |
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protected $curl; |
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protected $debugStderr; |
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protected $debugOutput; |
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protected $debugInfo; |
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protected $response; |
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protected $responseHeaders; |
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protected $responseHeadersArray; |
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protected $responseHeaderArray; |
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protected $logger; |
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protected $curlError; |
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public function __construct(\WebServCo\Framework\Interfaces\LoggerInterface $logger) |
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{ |
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$this->logger = $logger; |
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$this->debug = false; |
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$this->skipSslVerification = false; |
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$this->requestHeaders = []; |
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} |
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public function get($url) |
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{ |
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$this->setMethod(Method::GET); |
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return $this->retrieve($url); |
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} |
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public function getRequestHeaders() |
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{ |
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return $this->requestHeaders; |
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} |
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public function getResponseHeaders() |
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{ |
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return $this->responseHeaders; |
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} |
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public function head($url) |
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{ |
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$this->setMethod(Method::HEAD); |
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return $this->retrieve($url); |
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} |
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public function post($url, $postData = null) |
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{ |
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$this->setMethod(Method::POST); |
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if (!empty($postData)) { |
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$this->setPostData($postData); |
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} |
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return $this->retrieve($url); |
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} |
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public function retrieve($url) |
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{ |
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$this->debugInit(); |
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$this->curl = curl_init(); |
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if (!is_resource($this->curl)) { |
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throw new ApplicationException('Not a valid resource'); |
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} |
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$this->setCurlOptions($url); |
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$this->debugDo(); |
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$this->handleRequestMethod(); |
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$this->setRequestHeaders(); |
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$this->processResponse(); |
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$this->debugInfo = curl_getinfo($this->curl); |
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curl_close($this->curl); |
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$httpCode = $this->getHttpCode(); |
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if (empty($httpCode)) { |
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throw new ApplicationException(sprintf("Empty HTTP status code. cURL error: %s", $this->curlError)); |
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} |
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$body = trim($this->response); |
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$this->processResponseHeaders(); |
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$this->debugFinish(); |
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return new \WebServCo\Framework\Http\Response( |
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$body, |
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$httpCode, |
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end($this->responseHeaders) |
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); |
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} |
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public function setDebug($debug) |
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{ |
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$this->debug = (bool) $debug; |
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} |
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public function setMethod($method) |
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{ |
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if (!in_array($method, Method::getSupported())) { |
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throw new ApplicationException('Unsupported method'); |
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} |
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$this->method = $method; |
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return true; |
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} |
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public function setPostData($postData) |
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{ |
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if (is_array($postData)) { |
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$this->postData = []; |
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foreach ($postData as $key => $value) { |
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if (is_array($value)) { |
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throw new \InvalidArgumentException('POST value can not be an array'); |
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} |
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$this->postData[$key] = $value; |
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} |
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return true; |
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} |
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$this->postData = $postData; |
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return true; |
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} |
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public function setRequestHeader($name, $value) |
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{ |
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$this->requestHeaders[$name] = $value; |
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} |
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public function setSkipSSlVerification($skipSslVerification) |
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{ |
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$this->skipSslVerification = (bool) $skipSslVerification; |
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} |
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protected function debugDo() |
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{ |
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if ($this->debug) { |
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//curl_setopt($this->curl, CURLINFO_HEADER_OUT, 1); /* verbose not working if this is enabled */ |
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curl_setopt($this->curl, CURLOPT_VERBOSE, 1); |
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curl_setopt($this->curl, CURLOPT_STDERR, $this->debugStderr); |
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return false; |
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} |
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return false; |
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} |
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protected function debugFinish() |
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{ |
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if ($this->debug) { |
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fclose($this->debugStderr); |
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$this->debugOutput = ob_get_clean(); |
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$this->logger->debug('CURL INFO:', $this->debugInfo); |
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$this->logger->debug('CURL VERBOSE:', $this->debugOutput); |
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$this->logger->debug('CURL RESPONSE:', $this->response); |
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return true; |
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} |
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return false; |
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} |
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protected function debugInit() |
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{ |
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if ($this->debug) { |
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ob_start(); |
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$this->debugStderr = fopen('php://output', 'w'); |
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return true; |
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} |
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return false; |
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} |
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protected function getHttpCode() |
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{ |
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return isset($this->debugInfo['http_code']) ? $this->debugInfo['http_code']: false; |
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} |
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protected function handleRequestMethod() |
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{ |
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if (!is_resource($this->curl)) { |
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throw new ApplicationException('Not a valid resource'); |
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} |
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switch ($this->method) { |
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case Method::POST: |
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curl_setopt($this->curl, CURLOPT_POST, true); |
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if (!empty($this->postData)) { |
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curl_setopt($this->curl, CURLOPT_POSTFIELDS, $this->postData); |
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if (!is_array($this->postData)) { |
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$this->setRequestHeader('Content-Length', mb_strlen($this->postData)); |
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} |
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} |
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break; |
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case Method::HEAD: |
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curl_setopt($this->curl, CURLOPT_NOBODY, true); |
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break; |
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} |
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} |
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protected function headerCallback($curlResource, $headerData) |
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{ |
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$headerDataTrimmed = trim($headerData); |
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if (empty($headerDataTrimmed)) { |
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$this->responseHeadersArray[] = $this->responseHeaderArray; |
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$this->responseHeaderArray = []; |
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} |
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$this->responseHeaderArray[] = $headerData; |
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return strlen($headerData); |
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} |
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protected function parseRequestHeaders($headers) |
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{ |
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$data = []; |
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foreach ($headers as $k => $v) { |
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if (is_array($v)) { |
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foreach ($v as $item) { |
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$data[] = sprintf('%s: %s', $k, $item); |
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} |
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} else { |
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$data[] = sprintf('%s: %s', $k, $v); |
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} |
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} |
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return $data; |
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} |
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protected function parseResponseHeadersArray($responseHeadersArray = []) |
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{ |
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$headers = []; |
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foreach ($responseHeadersArray as $index => $line) { |
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if (0 === $index) { |
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continue; /* we'll get the status code elsewhere */ |
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} |
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$parts = explode(': ', $line, 2); |
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if (!isset($parts[1])) { |
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continue; // invalid header (missing colon) |
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} |
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list($key, $value) = $parts; |
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if (isset($headers[$key])) { |
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if (!is_array($headers[$key])) { |
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$headers[$key] = [$headers[$key]]; |
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} |
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// check cookies |
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if ('Set-Cookie' == $key) { |
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$parts = explode('=', $value, 2); |
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$cookieName = $parts[0]; |
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if (is_array($headers[$key])) { |
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foreach ($headers[$key] as $cookieIndex => $existingCookie) { |
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//check if we already have a cookie with the same name |
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if (0 === mb_stripos($existingCookie, $cookieName)) { |
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// remove previous cookie with the same name |
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unset($headers[$key][$cookieIndex]); |
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} |
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} |
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} |
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} |
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$headers[$key][] = trim($value); |
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$headers[$key] = array_values((array) $headers[$key]); // re-index array |
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} else { |
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$headers[$key] = trim($value); |
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} |
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} |
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return $headers; |
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} |
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protected function processResponse() |
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{ |
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$this->response = curl_exec($this->curl); |
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$this->curlError = curl_error($this->curl); |
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if (false === $this->response) { |
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throw new ApplicationException(sprintf("cURL error: %s", $this->curlError)); |
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} |
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} |
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protected function processResponseHeaders() |
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{ |
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$this->responseHeaders = []; |
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foreach ($this->responseHeadersArray as $item) { |
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$this->responseHeaders[] = $this->parseResponseHeadersArray($item); |
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} |
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} |
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protected function setCurlOptions($url) |
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{ |
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if (!is_resource($this->curl)) { |
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throw new ApplicationException('Not a valid resource'); |
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} |
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// set options |
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curl_setopt_array( |
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$this->curl, |
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[ |
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CURLOPT_RETURNTRANSFER => true, /* return instead of outputting */ |
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CURLOPT_URL => $url, |
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CURLOPT_HEADER => false, /* do not include the header in the output */ |
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CURLOPT_FOLLOWLOCATION => true, /* follow redirects */ |
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CURLOPT_CONNECTTIMEOUT => 60, // The number of seconds to wait while trying to connect. |
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CURLOPT_TIMEOUT => 60, // The maximum number of seconds to allow cURL functions to execute. |
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] |
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); |
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// check if we should ignore ssl errors |
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if ($this->skipSslVerification) { |
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// stop cURL from verifying the peer's certificate |
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curl_setopt($this->curl, CURLOPT_SSL_VERIFYPEER, false); |
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// don't check the existence of a common name in the SSL peer certificate |
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curl_setopt($this->curl, CURLOPT_SSL_VERIFYHOST, 0); |
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} |
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} |
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protected function setRequestHeaders() |
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{ |
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if (!is_resource($this->curl)) { |
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throw new ApplicationException('Not a valid resource'); |
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} |
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// set headers |
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if (!empty($this->requestHeaders)) { |
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curl_setopt( |
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$this->curl, |
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CURLOPT_HTTPHEADER, |
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$this->parseRequestHeaders($this->requestHeaders) |
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); |
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} |
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// Callback to process response headers |
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curl_setopt($this->curl, CURLOPT_HEADERFUNCTION, [$this, 'headerCallback']); |
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} |
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} |
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