Add new API call to fetch an ISO for iohyve

Uses the "url" argument, which should be the address understood by "fetch" to
grab an ISO from, I.E. http://, ftp://, file://, etc

The task will queue, and return an event when finished

REST Request:
-------------------------------
PUT /sysadm/iohyve
{
   "url" : "ftp://ftp.freebsd.org/pub/FreeBSD/releases/amd64/amd64/ISO-IMAGES/10.1/FreeBSD-10.1-RELEASE-amd64-disc1.iso",
   "action" : "fetchiso"
}

WebSocket Request:
-------------------------------
{
   "namespace" : "sysadm",
   "name" : "iohyve",
   "args" : {
      "url" : "ftp://ftp.freebsd.org/pub/FreeBSD/releases/amd64/amd64/ISO-IMAGES/10.1/FreeBSD-10.1-RELEASE-amd64-disc1.iso",
      "action" : "fetchiso"
   },
   "id" : "fooid"
}

Response:
-------------------------------
{
  "args": {
    "fetchiso": {
      "command": "iohyve fetch ftp://ftp.freebsd.org/pub/FreeBSD/releases/amd64/amd64/ISO-IMAGES/10.1/FreeBSD-10.1-RELEASE-amd64-disc1.iso",
      "comment": "Task Queued",
      "queueid": "{b3a8b980-a564-4ff8-86a2-1971bd4f58d1}"
    }
  },
  "id": "fooid",
  "name": "response",
  "namespace": "sysadm"
}

src/server/WebBackend.cpp

@@ -441,6 +441,10 @@ RestOutputStruct::ExitCode WebSocket::EvaluateSysadmIohyveRequest(const QJsonVal
 	ok = true;
         out->insert("listvms", sysadm::Iohyve::listVMs());
       }
+      if(act=="fetchiso"){
+	ok = true;
+        out->insert("fetchiso", sysadm::Iohyve::fetchISO(in_args.toObject()));
+      }
 
     } //end of "action" key usage
 

src/server/library/sysadm-iohyve.cpp

@@ -4,14 +4,43 @@
 //  Available under the 3-clause BSD license
 //  See the LICENSE file for full details
 //===========================================
+#include <QUuid>
 #include "sysadm-general.h"
 #include "sysadm-iohyve.h"
 #include "sysadm-global.h"
+#include "globals.h"
 
 using namespace sysadm;
 
 //PLEASE: Keep the functions in the same order as listed in pcbsd-general.h
 
+// Queue the fetch of an ISO
+QJsonObject Iohyve::fetchISO(QJsonObject jsin) {
+  QJsonObject retObject;
+
+  QStringList keys = jsin.keys();
+  if (! keys.contains("url") ) {
+    retObject.insert("error", "Missing required key 'url'");
+    return retObject;
+  }
+
+  // Get the key values
+  QString url = jsin.value("url").toString();
+
+  // Create a unique ID for this queued action
+  QString ID = QUuid::createUuid().toString();
+
+  // Queue the fetch action
+  DISPATCHER->queueProcess(ID, "iohyve fetch " + url);
+
+  // Return some details to user that the action was queued
+  retObject.insert("command", "iohyve fetch " + url);
+  retObject.insert("comment", "Task Queued");
+  retObject.insert("queueid", ID);
+  return retObject;
+}
+
+
 // List the VMs on the box
 QJsonObject Iohyve::listVMs() {
   QJsonObject retObject;

src/server/library/sysadm-iohyve.h

@@ -14,6 +14,7 @@ namespace sysadm{
 
 class Iohyve{
 public:
+	static QJsonObject fetchISO(QJsonObject);
 	static QJsonObject listVMs();
 };