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<?php
/* Icinga Web 2 | (c) 2016 Icinga Development Team | GPLv2+ */
namespace Icinga\Module\Monitoring\Web\Rest;
use Exception;
use Icinga\Application\Logger;
use Icinga\Util\Json;
use Icinga\Module\Monitoring\Exception\CurlException;
/**
* REST Request
*/
class RestRequest
{
/**
* Request URI
*
* @var string
*/
protected $uri;
/**
* Request method
*
* @var string
*/
protected $method;
/**
* Request content type
*
* @var string
*/
protected $contentType;
/**
* Whether to authenticate with basic auth
*
* @var bool
*/
protected $hasBasicAuth;
/**
* Auth username
*
* @var string
*/
protected $username;
/**
* Auth password
*
* @var string
*/
protected $password;
/**
* Request payload
*
* @var mixed
*/
protected $payload;
/**
* Whether strict SSL is enabled
*
* @var bool
*/
protected $strictSsl = true;
/**
* Request timeout
*
* @var int
*/
protected $timeout = 30;
/**
* Create a GET REST request
*
* @param string $uri
*
* @return static
*/
public static function get($uri)
{
$request = new static;
$request->uri = $uri;
$request->method = 'GET';
return $request;
}
/**
* Create a POST REST request
*
* @param string $uri
*
* @return static
*/
public static function post($uri)
{
$request = new static;
$request->uri = $uri;
$request->method = 'POST';
return $request;
}
/**
* Send content type JSON
*
* @return $this
*/
public function sendJson()
{
$this->contentType = 'application/json';
return $this;
}
/**
* Set basic auth credentials
*
* @param string $username
* @param string $password
*
* @return $this
*/
public function authenticateWith($username, $password)
{
$this->hasBasicAuth = true;
$this->username = $username;
$this->password = $password;
return $this;
}
/**
* Set request payload
*
* @param mixed $payload
*
* @return $this
*/
public function setPayload($payload)
{
$this->payload = $payload;
return $this;
}
/**
* Disable strict SSL
*
* @return $this
*/
public function noStrictSsl()
{
$this->strictSsl = false;
return $this;
}
/**
* Serialize payload according to content type
*
* @param mixed $payload
* @param string $contentType
*
* @return string
*/
public function serializePayload($payload, $contentType)
{
switch ($contentType) {
case 'application/json':
$payload = Json::encode($payload);
break;
}
return $payload;
}
/**
* Send the request
*
* @return mixed
*
* @throws Exception
*/
public function send()
{
$defaults = array(
'host' => 'localhost',
'path' => '/'
);
$url = array_merge($defaults, parse_url($this->uri));
if (isset($url['port'])) {
$url['host'] .= sprintf(':%u', $url['port']);
}
if (isset($url['query'])) {
$url['path'] .= sprintf('?%s', $url['query']);
}
$headers = array(
"{$this->method} {$url['path']} HTTP/1.1",
"Host: {$url['host']}",
"Content-Type: {$this->contentType}",
'Accept: application/json',
// Bypass "Expect: 100-continue" timeouts
'Expect:'
);
$options = array(
CURLOPT_URL => $this->uri,
CURLOPT_TIMEOUT => $this->timeout,
// Ignore proxy settings
CURLOPT_PROXY => '',
CURLOPT_CUSTOMREQUEST => $this->method
);
// Record cURL command line for debugging
$curlCmd = array('curl', '-s', '-X', $this->method, '-H', escapeshellarg('Accept: application/json'));
if ($this->strictSsl) {
$options[CURLOPT_SSL_VERIFYHOST] = 2;
$options[CURLOPT_SSL_VERIFYPEER] = true;
} else {
$options[CURLOPT_SSL_VERIFYHOST] = false;
$options[CURLOPT_SSL_VERIFYPEER] = false;
$curlCmd[] = '-k';
}
if ($this->hasBasicAuth) {
$options[CURLOPT_USERPWD] = sprintf('%s:%s', $this->username, $this->password);
$curlCmd[] = sprintf('-u %s:%s', escapeshellarg($this->username), escapeshellarg($this->password));
}
if (! empty($this->payload)) {
$payload = $this->serializePayload($this->payload, $this->contentType);
$options[CURLOPT_POSTFIELDS] = $payload;
$curlCmd[] = sprintf('-d %s', escapeshellarg($payload));
}
$options[CURLOPT_HTTPHEADER] = $headers;
$stream = null;
$logger = Logger::getInstance();
if ($logger !== null && $logger->getLevel() === Logger::DEBUG) {
$stream = fopen('php://temp', 'w');
$options[CURLOPT_VERBOSE] = true;
$options[CURLOPT_STDERR] = $stream;
}
Logger::debug(
'Executing %s %s',
implode(' ', $curlCmd),
escapeshellarg($this->uri)
);
$result = $this->curlExec($options);
if (is_resource($stream)) {
rewind($stream);
Logger::debug(stream_get_contents($stream));
fclose($stream);
}
return Json::decode($result, true);
}
/**
* Set up a new cURL handle with the given options and call {@link curl_exec()}
*
* @param array $options
*
* @return string The response
*
* @throws CurlException
*/
protected function curlExec(array $options)
{
$ch = curl_init();
$options[CURLOPT_RETURNTRANSFER] = true;
curl_setopt_array($ch, $options);
$result = curl_exec($ch);
if ($result === false) {
throw new CurlException('%s', curl_error($ch));
}
curl_close($ch);
return $result;
}
}
|
