/**
* Send a HTTP request to a URI using fsockopen().
*
* Does not support non-blocking mode.
*
* @see nxt_Http::request For default options descriptions.
*
* @since 2.7
* @access public
* @param string $url URI resource.
* @param str|array $args Optional. Override the defaults.
* @return array 'headers', 'body', 'cookies' and 'response' keys.
*/
function request($url, $args = array())
{
$defaults = array('method' => 'GET', 'timeout' => 5, 'redirection' => 5, 'httpversion' => '1.0', 'blocking' => true, 'headers' => array(), 'body' => null, 'cookies' => array());
$r = nxt_parse_args($args, $defaults);
if (isset($r['headers']['User-Agent'])) {
$r['user-agent'] = $r['headers']['User-Agent'];
unset($r['headers']['User-Agent']);
} else {
if (isset($r['headers']['user-agent'])) {
$r['user-agent'] = $r['headers']['user-agent'];
unset($r['headers']['user-agent']);
}
}
// Construct Cookie: header if any cookies are set
nxt_Http::buildCookieHeader($r);
$iError = null;
// Store error number
$strError = null;
// Store error string
$arrURL = parse_url($url);
$fsockopen_host = $arrURL['host'];
$secure_transport = false;
if (!isset($arrURL['port'])) {
if (($arrURL['scheme'] == 'ssl' || $arrURL['scheme'] == 'https') && extension_loaded('openssl')) {
$fsockopen_host = "ssl://{$fsockopen_host}";
$arrURL['port'] = 443;
$secure_transport = true;
} else {
$arrURL['port'] = 80;
}
}
// There are issues with the HTTPS and SSL protocols that cause errors that can be safely
// ignored and should be ignored.
if (true === $secure_transport) {
$error_reporting = error_reporting(0);
}
$startDelay = time();
$proxy = new nxt_HTTP_Proxy();
if (!defined('nxt_DEBUG') || defined('nxt_DEBUG') && false === nxt_DEBUG) {
if ($proxy->is_enabled() && $proxy->send_through_proxy($url)) {
$handle = @fsockopen($proxy->host(), $proxy->port(), $iError, $strError, $r['timeout']);
} else {
$handle = @fsockopen($fsockopen_host, $arrURL['port'], $iError, $strError, $r['timeout']);
}
} else {
if ($proxy->is_enabled() && $proxy->send_through_proxy($url)) {
$handle = fsockopen($proxy->host(), $proxy->port(), $iError, $strError, $r['timeout']);
} else {
$handle = fsockopen($fsockopen_host, $arrURL['port'], $iError, $strError, $r['timeout']);
}
}
$endDelay = time();
// If the delay is greater than the timeout then fsockopen should't be used, because it will
// cause a long delay.
$elapseDelay = $endDelay - $startDelay > $r['timeout'];
if (true === $elapseDelay) {
backpress_add_option('disable_fsockopen', $endDelay, null, true);
}
if (false === $handle) {
return new nxt_Error('http_request_failed', $iError . ': ' . $strError);
}
stream_set_timeout($handle, $r['timeout']);
if ($proxy->is_enabled() && $proxy->send_through_proxy($url)) {
//Some proxies require full URL in this field.
$requestPath = $url;
} else {
$requestPath = $arrURL['path'] . (isset($arrURL['query']) ? '?' . $arrURL['query'] : '');
}
if (empty($requestPath)) {
$requestPath .= '/';
}
$strHeaders = strtoupper($r['method']) . ' ' . $requestPath . ' HTTP/' . $r['httpversion'] . "\r\n";
if ($proxy->is_enabled() && $proxy->send_through_proxy($url)) {
$strHeaders .= 'Host: ' . $arrURL['host'] . ':' . $arrURL['port'] . "\r\n";
} else {
$strHeaders .= 'Host: ' . $arrURL['host'] . "\r\n";
}
if (isset($r['user-agent'])) {
$strHeaders .= 'User-agent: ' . $r['user-agent'] . "\r\n";
}
if (is_array($r['headers'])) {
foreach ((array) $r['headers'] as $header => $headerValue) {
$strHeaders .= $header . ': ' . $headerValue . "\r\n";
}
} else {
$strHeaders .= $r['headers'];
}
if ($proxy->use_authentication()) {
$strHeaders .= $proxy->authentication_header() . "\r\n";
}
$strHeaders .= "\r\n";
if (!is_null($r['body'])) {
$strHeaders .= $r['body'];
}
fwrite($handle, $strHeaders);
if (!$r['blocking']) {
fclose($handle);
return array('headers' => array(), 'body' => '', 'response' => array('code' => false, 'message' => false), 'cookies' => array());
}
$strResponse = '';
while (!feof($handle)) {
$strResponse .= fread($handle, 4096);
}
fclose($handle);
if (true === $secure_transport) {
error_reporting($error_reporting);
}
$process = nxt_Http::processResponse($strResponse);
$arrHeaders = nxt_Http::processHeaders($process['headers']);
// Is the response code within the 400 range?
if ((int) $arrHeaders['response']['code'] >= 400 && (int) $arrHeaders['response']['code'] < 500) {
return new nxt_Error('http_request_failed', $arrHeaders['response']['code'] . ': ' . $arrHeaders['response']['message']);
}
// If location is found, then assume redirect and redirect to location.
if (isset($arrHeaders['headers']['location'])) {
if ($r['redirection']-- > 0) {
return $this->request($arrHeaders['headers']['location'], $r);
} else {
return new nxt_Error('http_request_failed', __('Too many redirects.'));
}
}
// If the body was chunk encoded, then decode it.
if (!empty($process['body']) && isset($arrHeaders['headers']['transfer-encoding']) && 'chunked' == $arrHeaders['headers']['transfer-encoding']) {
$process['body'] = nxt_Http::chunkTransferDecode($process['body']);
}
if (true === $r['decompress'] && true === nxt_Http_Encoding::should_decode($arrHeaders['headers'])) {
$process['body'] = nxt_Http_Encoding::decompress($process['body']);
}
return array('headers' => $arrHeaders['headers'], 'body' => $process['body'], 'response' => $arrHeaders['response'], 'cookies' => $arrHeaders['cookies']);
}
/**
* Send a HTTP request to a URI using fsockopen().
*
* Does not support non-blocking mode.
*
* @see nxt_Http::request For default options descriptions.
*
* @since 2.7
* @access public
* @param string $url URI resource.
* @param str|array $args Optional. Override the defaults.
* @return array 'headers', 'body', 'response', 'cookies' and 'filename' keys.
*/
function request($url, $args = array())
{
$defaults = array('method' => 'GET', 'timeout' => 5, 'redirection' => 5, 'httpversion' => '1.0', 'blocking' => true, 'headers' => array(), 'body' => null, 'cookies' => array());
$r = nxt_parse_args($args, $defaults);
if (isset($r['headers']['User-Agent'])) {
$r['user-agent'] = $r['headers']['User-Agent'];
unset($r['headers']['User-Agent']);
} else {
if (isset($r['headers']['user-agent'])) {
$r['user-agent'] = $r['headers']['user-agent'];
unset($r['headers']['user-agent']);
}
}
// Construct Cookie: header if any cookies are set
nxt_Http::buildCookieHeader($r);
$iError = null;
// Store error number
$strError = null;
// Store error string
$arrURL = parse_url($url);
$fsockopen_host = $arrURL['host'];
$secure_transport = false;
if (!isset($arrURL['port'])) {
if (($arrURL['scheme'] == 'ssl' || $arrURL['scheme'] == 'https') && extension_loaded('openssl')) {
$fsockopen_host = "ssl://{$fsockopen_host}";
$arrURL['port'] = 443;
$secure_transport = true;
} else {
$arrURL['port'] = 80;
}
}
//fsockopen has issues with 'localhost' with IPv6 with certain versions of PHP, It attempts to connect to ::1,
// which fails when the server is not set up for it. For compatibility, always connect to the IPv4 address.
if ('localhost' == strtolower($fsockopen_host)) {
$fsockopen_host = '127.0.0.1';
}
// There are issues with the HTTPS and SSL protocols that cause errors that can be safely
// ignored and should be ignored.
if (true === $secure_transport) {
$error_reporting = error_reporting(0);
}
$startDelay = time();
$proxy = new nxt_HTTP_Proxy();
if (!nxt_DEBUG) {
if ($proxy->is_enabled() && $proxy->send_through_proxy($url)) {
$handle = @fsockopen($proxy->host(), $proxy->port(), $iError, $strError, $r['timeout']);
} else {
$handle = @fsockopen($fsockopen_host, $arrURL['port'], $iError, $strError, $r['timeout']);
}
} else {
if ($proxy->is_enabled() && $proxy->send_through_proxy($url)) {
$handle = fsockopen($proxy->host(), $proxy->port(), $iError, $strError, $r['timeout']);
} else {
$handle = fsockopen($fsockopen_host, $arrURL['port'], $iError, $strError, $r['timeout']);
}
}
$endDelay = time();
// If the delay is greater than the timeout then fsockopen shouldn't be used, because it will
// cause a long delay.
$elapseDelay = $endDelay - $startDelay > $r['timeout'];
if (true === $elapseDelay) {
add_option('disable_fsockopen', $endDelay, null, true);
}
if (false === $handle) {
return new nxt_Error('http_request_failed', $iError . ': ' . $strError);
}
$timeout = (int) floor($r['timeout']);
$utimeout = $timeout == $r['timeout'] ? 0 : 1000000 * $r['timeout'] % 1000000;
stream_set_timeout($handle, $timeout, $utimeout);
if ($proxy->is_enabled() && $proxy->send_through_proxy($url)) {
//Some proxies require full URL in this field.
$requestPath = $url;
} else {
$requestPath = $arrURL['path'] . (isset($arrURL['query']) ? '?' . $arrURL['query'] : '');
}
if (empty($requestPath)) {
$requestPath .= '/';
}
$strHeaders = strtoupper($r['method']) . ' ' . $requestPath . ' HTTP/' . $r['httpversion'] . "\r\n";
if ($proxy->is_enabled() && $proxy->send_through_proxy($url)) {
$strHeaders .= 'Host: ' . $arrURL['host'] . ':' . $arrURL['port'] . "\r\n";
} else {
$strHeaders .= 'Host: ' . $arrURL['host'] . "\r\n";
}
if (isset($r['user-agent'])) {
$strHeaders .= 'User-agent: ' . $r['user-agent'] . "\r\n";
}
if (is_array($r['headers'])) {
foreach ((array) $r['headers'] as $header => $headerValue) {
$strHeaders .= $header . ': ' . $headerValue . "\r\n";
}
} else {
$strHeaders .= $r['headers'];
}
if ($proxy->use_authentication()) {
$strHeaders .= $proxy->authentication_header() . "\r\n";
}
$strHeaders .= "\r\n";
if (!is_null($r['body'])) {
$strHeaders .= $r['body'];
}
fwrite($handle, $strHeaders);
if (!$r['blocking']) {
fclose($handle);
return array('headers' => array(), 'body' => '', 'response' => array('code' => false, 'message' => false), 'cookies' => array());
}
$strResponse = '';
$bodyStarted = false;
// If streaming to a file setup the file handle
if ($r['stream']) {
if (!nxt_DEBUG) {
$stream_handle = @fopen($r['filename'], 'w+');
} else {
$stream_handle = fopen($r['filename'], 'w+');
}
if (!$stream_handle) {
return new nxt_Error('http_request_failed', sprintf(__('Could not open handle for fopen() to %s'), $r['filename']));
}
while (!feof($handle)) {
$block = fread($handle, 4096);
if ($bodyStarted) {
fwrite($stream_handle, $block);
} else {
$strResponse .= $block;
if (strpos($strResponse, "\r\n\r\n")) {
$process = nxt_Http::processResponse($strResponse);
$bodyStarted = true;
fwrite($stream_handle, $process['body']);
unset($strResponse);
$process['body'] = '';
}
}
}
fclose($stream_handle);
} else {
while (!feof($handle)) {
$strResponse .= fread($handle, 4096);
}
$process = nxt_Http::processResponse($strResponse);
unset($strResponse);
}
fclose($handle);
if (true === $secure_transport) {
error_reporting($error_reporting);
}
$arrHeaders = nxt_Http::processHeaders($process['headers']);
// If location is found, then assume redirect and redirect to location.
if (isset($arrHeaders['headers']['location']) && 0 !== $r['_redirection']) {
if ($r['redirection']-- > 0) {
return $this->request($arrHeaders['headers']['location'], $r);
} else {
return new nxt_Error('http_request_failed', __('Too many redirects.'));
}
}
// If the body was chunk encoded, then decode it.
if (!empty($process['body']) && isset($arrHeaders['headers']['transfer-encoding']) && 'chunked' == $arrHeaders['headers']['transfer-encoding']) {
$process['body'] = nxt_Http::chunkTransferDecode($process['body']);
}
if (true === $r['decompress'] && true === nxt_Http_Encoding::should_decode($arrHeaders['headers'])) {
$process['body'] = nxt_Http_Encoding::decompress($process['body']);
}
return array('headers' => $arrHeaders['headers'], 'body' => $process['body'], 'response' => $arrHeaders['response'], 'cookies' => $arrHeaders['cookies'], 'filename' => $r['filename']);
}
