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<?php |
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declare(strict_types=1); |
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namespace AppUtils\FileHelper; |
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use AppUtils\FileHelper; |
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use AppUtils\FileHelper_Exception; |
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use AppUtils\RequestHelper; |
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class FileDownloader |
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{ |
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/** |
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* @var string |
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*/ |
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private $url; |
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/** |
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* @var int |
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*/ |
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private $timeout = 14; |
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/** |
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* @var bool |
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*/ |
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private $SSLEnabled = true; |
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private function __construct(string $url) |
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{ |
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$this->url = $url; |
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} |
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public static function factory(string $url) : FileDownloader |
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{ |
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return new FileDownloader($url); |
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} |
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/** |
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* @param int $timeout |
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* @return FileDownloader |
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*/ |
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public function setTimeout(int $timeout) : FileDownloader |
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{ |
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if($timeout > 0) |
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{ |
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$this->timeout = $timeout; |
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} |
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return $this; |
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} |
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/** |
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* @param bool $enabled |
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* @return FileDownloader |
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*/ |
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public function setSSLEnabled(bool $enabled=true) : FileDownloader |
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{ |
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$this->SSLEnabled = $enabled; |
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return $this; |
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} |
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/** |
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* Uses cURL to download the contents of the specified URL, |
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* returns the content. |
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* |
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* @throws FileHelper_Exception |
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* @return string |
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* |
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* @see FileHelper::ERROR_CANNOT_OPEN_URL |
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*/ |
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public function download() : string |
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{ |
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$ch = $this->initCurl(); |
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$output = curl_exec($ch); |
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if($output === false) |
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{ |
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throw new FileHelper_Exception( |
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'Unable to open URL', |
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sprintf( |
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'Tried accessing URL "%1$s" using cURL, but the request failed. cURL error: %2$s', |
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$this->url, |
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curl_error($ch) |
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), |
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FileHelper::ERROR_CANNOT_OPEN_URL |
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); |
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} |
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curl_close($ch); |
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if(is_string($output)) |
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{ |
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return $output; |
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} |
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throw new FileHelper_Exception( |
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'Unexpected cURL output.', |
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'The cURL output is not a string, although the CURLOPT_RETURNTRANSFER option is set.', |
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FileHelper::ERROR_CURL_OUTPUT_NOT_STRING |
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); |
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} |
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/** |
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* @return resource |
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* @throws FileHelper_Exception |
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*/ |
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private function initCurl() |
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{ |
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$ch = RequestHelper::createCURL(); |
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curl_setopt($ch, CURLOPT_URL, $this->url); |
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curl_setopt($ch, CURLOPT_REFERER, $this->url); |
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curl_setopt($ch, CURLOPT_USERAGENT, "Google Chrome/1.0"); |
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curl_setopt($ch, CURLOPT_HEADER, 0); |
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curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true); |
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curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); |
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curl_setopt($ch, CURLOPT_TIMEOUT, $this->timeout); |
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if(!$this->SSLEnabled) |
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{ |
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curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0); |
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curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0); |
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} |
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return $ch; |
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} |
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} |
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Mistralys /
application-utils
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