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<?php
/**
* Session handler for persistent requests and default parameters
*
* @package Requests
* @subpackage Session Handler
*/
/**
* Session handler for persistent requests and default parameters
*
* Allows various options to be set as default values, and merges both the
* options and URL properties together. A base URL can be set for all requests,
* with all subrequests resolved from this. Base options can be set (including
* a shared cookie jar), then overridden for individual requests.
*
* @package Requests
* @subpackage Session Handler
*/
class Requests_Session {
/**
* Base URL for requests
*
* URLs will be made absolute using this as the base
* @var string|null
*/
public $url = null;
/**
* Base headers for requests
* @var array
*/
public $headers = array();
/**
* Base data for requests
*
* If both the base data and the per-request data are arrays, the data will
* be merged before sending the request.
*
* @var array
*/
public $data = array();
/**
* Base options for requests
*
* The base options are merged with the per-request data for each request.
* The only default option is a shared cookie jar between requests.
*
* Values here can also be set directly via properties on the Session
* object, e.g. `$session->useragent = 'X';`
*
* @var array
*/
public $options = array();
/**
* Create a new session
*
* @param string|null $url Base URL for requests
* @param array $headers Default headers for requests
* @param array $data Default data for requests
* @param array $options Default options for requests
*/
public function __construct($url = null, $headers = array(), $data = array(), $options = array()) {
$this->url = $url;
$this->headers = $headers;
$this->data = $data;
$this->options = $options;
if (empty($this->options['cookies'])) {
$this->options['cookies'] = new Requests_Cookie_Jar();
}
}
/**
* Get a property's value
*
* @param string $key Property key
* @return mixed|null Property value, null if none found
*/
public function __get($key) {
if (isset($this->options[$key])) {
return $this->options[$key];
}
return null;
}
/**
* Set a property's value
*
* @param string $key Property key
* @param mixed $value Property value
*/
public function __set($key, $value) {
$this->options[$key] = $value;
}
/**
* Remove a property's value
*
* @param string $key Property key
*/
public function __isset($key) {
return isset($this->options[$key]);
}
/**
* Remove a property's value
*
* @param string $key Property key
*/
public function __unset($key) {
if (isset($this->options[$key])) {
unset($this->options[$key]);
}
}
/**#@+
* @see request()
* @param string $url
* @param array $headers
* @param array $options
* @return Requests_Response
*/
/**
* Send a GET request
*/
public function get($url, $headers = array(), $options = array()) {
return $this->request($url, $headers, null, Requests::GET, $options);
}
/**
* Send a HEAD request
*/
public function head($url, $headers = array(), $options = array()) {
return $this->request($url, $headers, null, Requests::HEAD, $options);
}
/**
* Send a DELETE request
*/
public function delete($url, $headers = array(), $options = array()) {
return $this->request($url, $headers, null, Requests::DELETE, $options);
}
/**#@-*/
/**#@+
* @see request()
* @param string $url
* @param array $headers
* @param array $data
* @param array $options
* @return Requests_Response
*/
/**
* Send a POST request
*/
public function post($url, $headers = array(), $data = array(), $options = array()) {
return $this->request($url, $headers, $data, Requests::POST, $options);
}
/**
* Send a PUT request
*/
public function put($url, $headers = array(), $data = array(), $options = array()) {
return $this->request($url, $headers, $data, Requests::PUT, $options);
}
/**
* Send a PATCH request
*
* Note: Unlike {@see post} and {@see put}, `$headers` is required, as the
* specification recommends that should send an ETag
*
* @link https://tools.ietf.org/html/rfc5789
*/
public function patch($url, $headers, $data = array(), $options = array()) {
return $this->request($url, $headers, $data, Requests::PATCH, $options);
}
/**#@-*/
/**
* Main interface for HTTP requests
*
* This method initiates a request and sends it via a transport before
* parsing.
*
* @see Requests::request()
*
* @throws Requests_Exception On invalid URLs (`nonhttp`)
*
* @param string $url URL to request
* @param array $headers Extra headers to send with the request
* @param array|null $data Data to send either as a query string for GET/HEAD requests, or in the body for POST requests
* @param string $type HTTP request type (use Requests constants)
* @param array $options Options for the request (see {@see Requests::request})
* @return Requests_Response
*/
public function request($url, $headers = array(), $data = array(), $type = Requests::GET, $options = array()) {
$request = $this->merge_request(compact('url', 'headers', 'data', 'options'));
return Requests::request($request['url'], $request['headers'], $request['data'], $type, $request['options']);
}
/**
* Send multiple HTTP requests simultaneously
*
* @see Requests::request_multiple()
*
* @param array $requests Requests data (see {@see Requests::request_multiple})
* @param array $options Global and default options (see {@see Requests::request})
* @return array Responses (either Requests_Response or a Requests_Exception object)
*/
public function request_multiple($requests, $options = array()) {
foreach ($requests as $key => $request) {
$requests[$key] = $this->merge_request($request, false);
}
$options = array_merge($this->options, $options);
// Disallow forcing the type, as that's a per request setting
unset($options['type']);
return Requests::request_multiple($requests, $options);
}
/**
* Merge a request's data with the default data
*
* @param array $request Request data (same form as {@see request_multiple})
* @param boolean $merge_options Should we merge options as well?
* @return array Request data
*/
protected function merge_request($request, $merge_options = true) {
if ($this->url !== null) {
$request['url'] = Requests_IRI::absolutize($this->url, $request['url']);
$request['url'] = $request['url']->uri;
}
if (empty($request['headers'])) {
$request['headers'] = array();
}
$request['headers'] = array_merge($this->headers, $request['headers']);
if (empty($request['data'])) {
if (is_array($this->data)) {
$request['data'] = $this->data;
}
}
elseif (is_array($request['data']) && is_array($this->data)) {
$request['data'] = array_merge($this->data, $request['data']);
}
if ($merge_options !== false) {
$request['options'] = array_merge($this->options, $request['options']);
// Disallow forcing the type, as that's a per request setting
unset($request['options']['type']);
}
return $request;
}
}