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<?php
namespace Guzzle\Http\Message;
use Guzzle\Common\Version;
use Guzzle\Common\Event;
use Guzzle\Common\Collection;
use Guzzle\Common\Exception\RuntimeException;
use Guzzle\Common\Exception\InvalidArgumentException;
use Guzzle\Http\Exception\RequestException;
use Guzzle\Http\Exception\BadResponseException;
use Guzzle\Http\ClientInterface;
use Guzzle\Http\EntityBody;
use Guzzle\Http\EntityBodyInterface;
use Guzzle\Http\Message\Header\HeaderInterface;
use Guzzle\Http\Url;
use Guzzle\Parser\ParserRegistry;
use Symfony\Component\EventDispatcher\EventDispatcherInterface;
use Symfony\Component\EventDispatcher\EventDispatcher;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;
/**
* HTTP request class to send requests
*/
class Request extends AbstractMessage implements RequestInterface
{
/** @var EventDispatcherInterface */
protected $eventDispatcher;
/** @var Url HTTP Url */
protected $url;
/** @var string HTTP method (GET, PUT, POST, DELETE, HEAD, OPTIONS, TRACE) */
protected $method;
/** @var ClientInterface */
protected $client;
/** @var Response Response of the request */
protected $response;
/** @var EntityBodyInterface Response body */
protected $responseBody;
/** @var string State of the request object */
protected $state;
/** @var string Authentication username */
protected $username;
/** @var string Auth password */
protected $password;
/** @var Collection cURL specific transfer options */
protected $curlOptions;
/** @var bool */
protected $isRedirect = false;
public static function getAllEvents()
{
return array(
// Called when receiving or uploading data through cURL
'curl.callback.read', 'curl.callback.write', 'curl.callback.progress',
// Cloning a request
'request.clone',
// About to send the request, sent request, completed transaction
'request.before_send', 'request.sent', 'request.complete',
// A request received a successful response
'request.success',
// A request received an unsuccessful response
'request.error',
// An exception is being thrown because of an unsuccessful response
'request.exception',
// Received response status line
'request.receive.status_line'
);
}
/**
* @param string $method HTTP method
* @param string|Url $url HTTP URL to connect to. The URI scheme, host header, and URI are parsed from the
* full URL. If query string parameters are present they will be parsed as well.
* @param array|Collection $headers HTTP headers
*/
public function __construct($method, $url, $headers = array())
{
parent::__construct();
$this->method = strtoupper($method);
$this->curlOptions = new Collection();
$this->setUrl($url);
if ($headers) {
// Special handling for multi-value headers
foreach ($headers as $key => $value) {
// Deal with collisions with Host and Authorization
if ($key == 'host' || $key == 'Host') {
$this->setHeader($key, $value);
} elseif ($value instanceof HeaderInterface) {
$this->addHeader($key, $value);
} else {
foreach ((array) $value as $v) {
$this->addHeader($key, $v);
}
}
}
}
$this->setState(self::STATE_NEW);
}
public function __clone()
{
if ($this->eventDispatcher) {
$this->eventDispatcher = clone $this->eventDispatcher;
}
$this->curlOptions = clone $this->curlOptions;
$this->params = clone $this->params;
$this->url = clone $this->url;
$this->response = $this->responseBody = null;
$this->headers = clone $this->headers;
$this->setState(RequestInterface::STATE_NEW);
$this->dispatch('request.clone', array('request' => $this));
}
/**
* Get the HTTP request as a string
*
* @return string
*/
public function __toString()
{
return $this->getRawHeaders() . "\r\n\r\n";
}
/**
* Default method that will throw exceptions if an unsuccessful response is received.
*
* @param Event $event Received
* @throws BadResponseException if the response is not successful
*/
public static function onRequestError(Event $event)
{
$e = BadResponseException::factory($event['request'], $event['response']);
$event['request']->setState(self::STATE_ERROR, array('exception' => $e) + $event->toArray());
throw $e;
}
public function setClient(ClientInterface $client)
{
$this->client = $client;
return $this;
}
public function getClient()
{
return $this->client;
}
public function getRawHeaders()
{
$protocolVersion = $this->protocolVersion ?: '1.1';
return trim($this->method . ' ' . $this->getResource()) . ' '
. strtoupper(str_replace('https', 'http', $this->url->getScheme()))
. '/' . $protocolVersion . "\r\n" . implode("\r\n", $this->getHeaderLines());
}
public function setUrl($url)
{
if ($url instanceof Url) {
$this->url = $url;
} else {
$this->url = Url::factory($url);
}
// Update the port and host header
$this->setPort($this->url->getPort());
if ($this->url->getUsername() || $this->url->getPassword()) {
$this->setAuth($this->url->getUsername(), $this->url->getPassword());
// Remove the auth info from the URL
$this->url->setUsername(null);
$this->url->setPassword(null);
}
return $this;
}
public function send()
{
if (!$this->client) {
throw new RuntimeException('A client must be set on the request');
}
return $this->client->send($this);
}
public function getResponse()
{
return $this->response;
}
public function getQuery($asString = false)
{
return $asString
? (string) $this->url->getQuery()
: $this->url->getQuery();
}
public function getMethod()
{
return $this->method;
}
public function getScheme()
{
return $this->url->getScheme();
}
public function setScheme($scheme)
{
$this->url->setScheme($scheme);
return $this;
}
public function getHost()
{
return $this->url->getHost();
}
public function setHost($host)
{
$this->url->setHost($host);
$this->setPort($this->url->getPort());
return $this;
}
public function getProtocolVersion()
{
return $this->protocolVersion;
}
public function setProtocolVersion($protocol)
{
$this->protocolVersion = $protocol;
return $this;
}
public function getPath()
{
return '/' . ltrim($this->url->getPath(), '/');
}
public function setPath($path)
{
$this->url->setPath($path);
return $this;
}
public function getPort()
{
return $this->url->getPort();
}
public function setPort($port)
{
$this->url->setPort($port);
// Include the port in the Host header if it is not the default port for the scheme of the URL
$scheme = $this->url->getScheme();
if (($scheme == 'http' && $port != 80) || ($scheme == 'https' && $port != 443)) {
$this->headers['host'] = $this->headerFactory->createHeader('Host', $this->url->getHost() . ':' . $port);
} else {
$this->headers['host'] = $this->headerFactory->createHeader('Host', $this->url->getHost());
}
return $this;
}
public function getUsername()
{
return $this->username;
}
public function getPassword()
{
return $this->password;
}
public function setAuth($user, $password = '', $scheme = CURLAUTH_BASIC)
{
static $authMap = array(
'basic' => CURLAUTH_BASIC,
'digest' => CURLAUTH_DIGEST,
'ntlm' => CURLAUTH_NTLM,
'any' => CURLAUTH_ANY
);
// If we got false or null, disable authentication
if (!$user) {
$this->password = $this->username = null;
$this->removeHeader('Authorization');
$this->getCurlOptions()->remove(CURLOPT_HTTPAUTH);
return $this;
}
if (!is_numeric($scheme)) {
$scheme = strtolower($scheme);
if (!isset($authMap[$scheme])) {
throw new InvalidArgumentException($scheme . ' is not a valid authentication type');
}
$scheme = $authMap[$scheme];
}
$this->username = $user;
$this->password = $password;
// Bypass CURL when using basic auth to promote connection reuse
if ($scheme == CURLAUTH_BASIC) {
$this->getCurlOptions()->remove(CURLOPT_HTTPAUTH);
$this->setHeader('Authorization', 'Basic ' . base64_encode($this->username . ':' . $this->password));
} else {
$this->getCurlOptions()
->set(CURLOPT_HTTPAUTH, $scheme)
->set(CURLOPT_USERPWD, $this->username . ':' . $this->password);
}
return $this;
}
public function getResource()
{
$resource = $this->getPath();
if ($query = (string) $this->url->getQuery()) {
$resource .= '?' . $query;
}
return $resource;
}
public function getUrl($asObject = false)
{
return $asObject ? clone $this->url : (string) $this->url;
}
public function getState()
{
return $this->state;
}
public function setState($state, array $context = array())
{
$oldState = $this->state;
$this->state = $state;
switch ($state) {
case self::STATE_NEW:
$this->response = null;
break;
case self::STATE_TRANSFER:
if ($oldState !== $state) {
// Fix Content-Length and Transfer-Encoding collisions
if ($this->hasHeader('Transfer-Encoding') && $this->hasHeader('Content-Length')) {
$this->removeHeader('Transfer-Encoding');
}
$this->dispatch('request.before_send', array('request' => $this));
}
break;
case self::STATE_COMPLETE:
if ($oldState !== $state) {
$this->processResponse($context);
$this->responseBody = null;
}
break;
case self::STATE_ERROR:
if (isset($context['exception'])) {
$this->dispatch('request.exception', array(
'request' => $this,
'response' => isset($context['response']) ? $context['response'] : $this->response,
'exception' => isset($context['exception']) ? $context['exception'] : null
));
}
}
return $this->state;
}
public function getCurlOptions()
{
return $this->curlOptions;
}
public function startResponse(Response $response)
{
$this->state = self::STATE_TRANSFER;
$response->setEffectiveUrl((string) $this->getUrl());
$this->response = $response;
return $this;
}
public function setResponse(Response $response, $queued = false)
{
$response->setEffectiveUrl((string) $this->url);
if ($queued) {
$ed = $this->getEventDispatcher();
$ed->addListener('request.before_send', $f = function ($e) use ($response, &$f, $ed) {
$e['request']->setResponse($response);
$ed->removeListener('request.before_send', $f);
}, -9999);
} else {
$this->response = $response;
// If a specific response body is specified, then use it instead of the response's body
if ($this->responseBody && !$this->responseBody->getCustomData('default') && !$response->isRedirect()) {
$this->getResponseBody()->write((string) $this->response->getBody());
} else {
$this->responseBody = $this->response->getBody();
}
$this->setState(self::STATE_COMPLETE);
}
return $this;
}
public function setResponseBody($body)
{
// Attempt to open a file for writing if a string was passed
if (is_string($body)) {
// @codeCoverageIgnoreStart
if (!($body = fopen($body, 'w+'))) {
throw new InvalidArgumentException('Could not open ' . $body . ' for writing');
}
// @codeCoverageIgnoreEnd
}
$this->responseBody = EntityBody::factory($body);
return $this;
}
public function getResponseBody()
{
if ($this->responseBody === null) {
$this->responseBody = EntityBody::factory()->setCustomData('default', true);
}
return $this->responseBody;
}
/**
* Determine if the response body is repeatable (readable + seekable)
*
* @return bool
* @deprecated Use getResponseBody()->isSeekable()
* @codeCoverageIgnore
*/
public function isResponseBodyRepeatable()
{
Version::warn(__METHOD__ . ' is deprecated. Use $request->getResponseBody()->isRepeatable()');
return !$this->responseBody ? true : $this->responseBody->isRepeatable();
}
public function getCookies()
{
if ($cookie = $this->getHeader('Cookie')) {
$data = ParserRegistry::getInstance()->getParser('cookie')->parseCookie($cookie);
return $data['cookies'];
}
return array();
}
public function getCookie($name)
{
$cookies = $this->getCookies();
return isset($cookies[$name]) ? $cookies[$name] : null;
}
public function addCookie($name, $value)
{
if (!$this->hasHeader('Cookie')) {
$this->setHeader('Cookie', "{$name}={$value}");
} else {
$this->getHeader('Cookie')->add("{$name}={$value}");
}
// Always use semicolons to separate multiple cookie headers
$this->getHeader('Cookie')->setGlue(';');
return $this;
}
public function removeCookie($name)
{
if ($cookie = $this->getHeader('Cookie')) {
foreach ($cookie as $cookieValue) {
if (strpos($cookieValue, $name . '=') === 0) {
$cookie->removeValue($cookieValue);
}
}
}
return $this;
}
public function setEventDispatcher(EventDispatcherInterface $eventDispatcher)
{
$this->eventDispatcher = $eventDispatcher;
$this->eventDispatcher->addListener('request.error', array(__CLASS__, 'onRequestError'), -255);
return $this;
}
public function getEventDispatcher()
{
if (!$this->eventDispatcher) {
$this->setEventDispatcher(new EventDispatcher());
}
return $this->eventDispatcher;
}
public function dispatch($eventName, array $context = array())
{
$context['request'] = $this;
return $this->getEventDispatcher()->dispatch($eventName, new Event($context));
}
public function addSubscriber(EventSubscriberInterface $subscriber)
{
$this->getEventDispatcher()->addSubscriber($subscriber);
return $this;
}
/**
* Get an array containing the request and response for event notifications
*
* @return array
*/
protected function getEventArray()
{
return array(
'request' => $this,
'response' => $this->response
);
}
/**
* Process a received response
*
* @param array $context Contextual information
* @throws RequestException|BadResponseException on unsuccessful responses
*/
protected function processResponse(array $context = array())
{
if (!$this->response) {
// If no response, then processResponse shouldn't have been called
$e = new RequestException('Error completing request');
$e->setRequest($this);
throw $e;
}
$this->state = self::STATE_COMPLETE;
// A request was sent, but we don't know if we'll send more or if the final response will be successful
$this->dispatch('request.sent', $this->getEventArray() + $context);
// Some response processors will remove the response or reset the state (example: ExponentialBackoffPlugin)
if ($this->state == RequestInterface::STATE_COMPLETE) {
// The request completed, so the HTTP transaction is complete
$this->dispatch('request.complete', $this->getEventArray());
// If the response is bad, allow listeners to modify it or throw exceptions. You can change the response by
// modifying the Event object in your listeners or calling setResponse() on the request
if ($this->response->isError()) {
$event = new Event($this->getEventArray());
$this->getEventDispatcher()->dispatch('request.error', $event);
// Allow events of request.error to quietly change the response
if ($event['response'] !== $this->response) {
$this->response = $event['response'];
}
}
// If a successful response was received, dispatch an event
if ($this->response->isSuccessful()) {
$this->dispatch('request.success', $this->getEventArray());
}
}
}
/**
* @deprecated Use Guzzle\Plugin\Cache\DefaultCanCacheStrategy
* @codeCoverageIgnore
*/
public function canCache()
{
Version::warn(__METHOD__ . ' is deprecated. Use Guzzle\Plugin\Cache\DefaultCanCacheStrategy.');
if (class_exists('Guzzle\Plugin\Cache\DefaultCanCacheStrategy')) {
$canCache = new \Guzzle\Plugin\Cache\DefaultCanCacheStrategy();
return $canCache->canCacheRequest($this);
} else {
return false;
}
}
/**
* @deprecated Use the history plugin (not emitting a warning as this is built-into the RedirectPlugin for now)
* @codeCoverageIgnore
*/
public function setIsRedirect($isRedirect)
{
$this->isRedirect = $isRedirect;
return $this;
}
/**
* @deprecated Use the history plugin
* @codeCoverageIgnore
*/
public function isRedirect()
{
Version::warn(__METHOD__ . ' is deprecated. Use the HistoryPlugin to track this.');
return $this->isRedirect;
}
}
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