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<?php
namespace Kanboard\Core\Http;
use Kanboard\Core\Base;
/**
* HTTP client
*
* @package http
* @author Frederic Guillot
*/
class Client extends Base
{
/**
* HTTP connection timeout in seconds
*
* @var integer
*/
const HTTP_TIMEOUT = 5;
/**
* Number of maximum redirections for the HTTP client
*
* @var integer
*/
const HTTP_MAX_REDIRECTS = 2;
/**
* HTTP client user agent
*
* @var string
*/
const HTTP_USER_AGENT = 'Kanboard';
/**
* Send a GET HTTP request and parse JSON response
*
* @access public
* @param string $url
* @param string[] $headers
* @return array
*/
public function getJson($url, array $headers = array())
{
$response = $this->doRequest('GET', $url, '', array_merge(array('Accept: application/json'), $headers));
return json_decode($response, true) ?: array();
}
/**
* Send a POST HTTP request encoded in JSON
*
* @access public
* @param string $url
* @param array $data
* @param string[] $headers
* @return string
*/
public function postJson($url, array $data, array $headers = array())
{
return $this->doRequest(
'POST',
$url,
json_encode($data),
array_merge(array('Content-type: application/json'), $headers)
);
}
/**
* Send a POST HTTP request encoded in www-form-urlencoded
*
* @access public
* @param string $url
* @param array $data
* @param string[] $headers
* @return string
*/
public function postForm($url, array $data, array $headers = array())
{
return $this->doRequest(
'POST',
$url,
http_build_query($data),
array_merge(array('Content-type: application/x-www-form-urlencoded'), $headers)
);
}
/**
* Make the HTTP request
*
* @access private
* @param string $method
* @param string $url
* @param string $content
* @param string[] $headers
* @return string
*/
private function doRequest($method, $url, $content, array $headers)
{
if (empty($url)) {
return '';
}
$stream = @fopen(trim($url), 'r', false, stream_context_create($this->getContext($method, $content, $headers)));
$response = '';
if (is_resource($stream)) {
$response = stream_get_contents($stream);
} else {
$this->logger->error('HttpClient: request failed');
}
if (DEBUG) {
$this->logger->debug('HttpClient: url='.$url);
$this->logger->debug('HttpClient: payload='.$content);
$this->logger->debug('HttpClient: metadata='.var_export(@stream_get_meta_data($stream), true));
$this->logger->debug('HttpClient: response='.$response);
}
return $response;
}
/**
* Get stream context
*
* @access private
* @param string $method
* @param string $content
* @param string[] $headers
* @return array
*/
private function getContext($method, $content, array $headers)
{
$default_headers = array(
'User-Agent: '.self::HTTP_USER_AGENT,
'Connection: close',
);
if (HTTP_PROXY_USERNAME) {
$default_headers[] = 'Proxy-Authorization: Basic '.base64_encode(HTTP_PROXY_USERNAME.':'.HTTP_PROXY_PASSWORD);
}
$headers = array_merge($default_headers, $headers);
$context = array(
'http' => array(
'method' => $method,
'protocol_version' => 1.1,
'timeout' => self::HTTP_TIMEOUT,
'max_redirects' => self::HTTP_MAX_REDIRECTS,
'header' => implode("\r\n", $headers),
'content' => $content
)
);
if (HTTP_PROXY_HOSTNAME) {
$context['http']['proxy'] = 'tcp://'.HTTP_PROXY_HOSTNAME.':'.HTTP_PROXY_PORT;
$context['http']['request_fulluri'] = true;
}
return $context;
}
}
|
