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<?php
class N2TransferData {
public static function get($url, $options = array()) {
$options = array_merge(array(
'referer' => $_SERVER['REQUEST_URI']
), $options);
if (function_exists('curl_init') && function_exists('curl_exec') && N2Settings::get('curl', 1)) {
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 20);
curl_setopt($ch, CURLOPT_TIMEOUT, 30);
curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.0.3705; .NET CLR 1.1.4322)');
if (!empty($options['referer'])) {
curl_setopt($ch, CURLOPT_REFERER, $options['referer']);
}
if (N2Settings::get('curl-clean-proxy', 0)) {
curl_setopt($ch, CURLOPT_PROXY, '');
}
$data = curl_exec($ch);
if (curl_errno($ch) == 60) {
curl_setopt($ch, CURLOPT_CAINFO, N2LIBRARY . '/cacert.pem');
$data = curl_exec($ch);
}
$error = curl_error($ch);
$curlErrorNumber = curl_errno($ch);
curl_close($ch);
if ($curlErrorNumber) {
$href = N2Base::getApplication('smartslider')->router->createUrl(array(
"help/index",
array('curl' => 1)
));
N2Message::error(N2Html::tag('a', array(
'href' => $href . '#support-form'
), n2_('Debug error')));
N2Message::error($curlErrorNumber . $error);
return false;
}
return $data;
} else {
if (!ini_get('allow_url_fopen')) {
N2Message::error(n2_('The <a href="http://php.net/manual/en/filesystem.configuration.php#ini.allow-url-fopen" target="_blank">allow_url_fopen</a> is not turned on in your server, which is necessary to read rss feeds. You should contact your server host, and ask them to enable it!'));
return false;
}
$opts = array(
'http' => array(
'method' => 'GET'
)
);
$context = stream_context_create($opts);
$data = file_get_contents($url, false, $context);
if ($data === false) {
N2Message::error(n2_('CURL disabled in your php.ini configuration. Please enable it!'));
return false;
}
$headers = self::parseHeaders($http_response_header);
if ($headers['status'] != '200') {
N2Message::error(n2_('Unable to contact with the licensing server, please try again later!'));
return false;
}
return $data;
}
}
private static function parseHeaders(array $headers, $header = null) {
$output = array();
if ('HTTP' === substr($headers[0], 0, 4)) {
list(, $output['status'], $output['status_text']) = explode(' ', $headers[0]);
unset($headers[0]);
}
foreach ($headers as $v) {
$h = preg_split('/:\s*/', $v);
if (count($h) >= 2) {
$output[strtolower($h[0])] = $h[1];
}
}
if (null !== $header) {
if (isset($output[strtolower($header)])) {
return $output[strtolower($header)];
}
return;
}
return $output;
}
}
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