Add support for parameters to GET requests

Addresses GitHub Issue #8

- Set parameters as CURLOPT_POSTFIELDS, which cURL will automatically translate into the URL query string.
  This lets us pass the ?params versus &params logic off to cURL, which makes the code easier to maintain.
- Allow all parameters passed to be empty by making the argument optional on GET, POST, and PUT.
  This is mostly for consistency.

Signed-off-by: Daniel Hunsaker <danhunsaker@gmail.com>

Author: danhunsaker

pve2_api.class.php

@@ -165,7 +165,12 @@ private function action ($action_path, $http_method, $put_post_parameters = null
 		// Lets decide what type of action we are taking...
 		switch ($http_method) {
 			case "GET":
-				// Nothing extra to do.
+				// Set "POST" data - cURL will translate this into the appropriate
+				// querystring so we don't have to worry about it.
+				$action_postfields_string = http_build_query($put_post_parameters);
+				curl_setopt($prox_ch, CURLOPT_POSTFIELDS, $action_postfields_string);
+				unset($action_postfields_string);
+
 				break;
 			case "PUT":
 				curl_setopt($prox_ch, CURLOPT_CUSTOMREQUEST, "PUT");
@@ -323,21 +328,21 @@ public function get_version () {
 	/*
 	 * object/array? get (string action_path)
 	 */
-	public function get ($action_path) {
-		return $this->action($action_path, "GET");
+	public function get ($action_path, $parameters = array()) {
+		return $this->action($action_path, "GET", $parameters);
 	}
 
 	/*
 	 * bool put (string action_path, array parameters)
 	 */
-	public function put ($action_path, $parameters) {
+	public function put ($action_path, $parameters = array()) {
 		return $this->action($action_path, "PUT", $parameters);
 	}
 
 	/*
 	 * bool post (string action_path, array parameters)
 	 */
-	public function post ($action_path, $parameters) {
+	public function post ($action_path, $parameters = array()) {
 		return $this->action($action_path, "POST", $parameters);
 	}