File: nsDBusHandlerApp.cpp

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
 * vim:expandtab:shiftwidth=2:tabstop=2:cin:
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include <dbus/dbus.h>
#include "mozilla/DBusHelpers.h"
#include "nsDBusHandlerApp.h"
#include "nsIURI.h"
#include "nsIClassInfoImpl.h"
#include "nsCOMPtr.h"
#include "nsCExternalHandlerService.h"

// XXX why does nsMIMEInfoImpl have a threadsafe nsISupports?  do we need one
// here too?
NS_IMPL_CLASSINFO(nsDBusHandlerApp, nullptr, 0, NS_DBUSHANDLERAPP_CID)
NS_IMPL_ISUPPORTS_CI(nsDBusHandlerApp, nsIDBusHandlerApp, nsIHandlerApp)

////////////////////////////////////////////////////////////////////////////////
//// nsIHandlerApp

NS_IMETHODIMP nsDBusHandlerApp::GetName(nsAString &aName) {
  aName.Assign(mName);
  return NS_OK;
}

NS_IMETHODIMP nsDBusHandlerApp::SetName(const nsAString &aName) {
  mName.Assign(aName);
  return NS_OK;
}

NS_IMETHODIMP nsDBusHandlerApp::SetDetailedDescription(
    const nsAString &aDescription) {
  mDetailedDescription.Assign(aDescription);

  return NS_OK;
}

NS_IMETHODIMP nsDBusHandlerApp::GetDetailedDescription(
    nsAString &aDescription) {
  aDescription.Assign(mDetailedDescription);

  return NS_OK;
}

NS_IMETHODIMP
nsDBusHandlerApp::Equals(nsIHandlerApp *aHandlerApp, bool *_retval) {
  NS_ENSURE_ARG_POINTER(aHandlerApp);

  // If the handler app isn't a dbus handler app, then it's not the same app.
  nsCOMPtr<nsIDBusHandlerApp> dbusHandlerApp = do_QueryInterface(aHandlerApp);
  if (!dbusHandlerApp) {
    *_retval = false;
    return NS_OK;
  }
  nsAutoCString service;
  nsAutoCString method;

  nsresult rv = dbusHandlerApp->GetService(service);
  if (NS_FAILED(rv)) {
    *_retval = false;
    return NS_OK;
  }
  rv = dbusHandlerApp->GetMethod(method);
  if (NS_FAILED(rv)) {
    *_retval = false;
    return NS_OK;
  }

  *_retval = service.Equals(mService) && method.Equals(mMethod);
  return NS_OK;
}

NS_IMETHODIMP
nsDBusHandlerApp::LaunchWithURI(nsIURI *aURI,
                                nsIInterfaceRequestor *aWindowContext) {
  nsAutoCString spec;
  nsresult rv = aURI->GetAsciiSpec(spec);
  NS_ENSURE_SUCCESS(rv, rv);
  const char *uri = spec.get();

  DBusError err;
  dbus_error_init(&err);

  mozilla::UniquePtr<DBusConnection, mozilla::DBusConnectionDelete> connection(
      dbus_bus_get_private(DBUS_BUS_SESSION, &err));

  if (dbus_error_is_set(&err)) {
    dbus_error_free(&err);
    return NS_ERROR_FAILURE;
  }
  if (nullptr == connection) {
    return NS_ERROR_FAILURE;
  }
  dbus_connection_set_exit_on_disconnect(connection.get(), false);

  RefPtr<DBusMessage> msg =
      already_AddRefed<DBusMessage>(dbus_message_new_method_call(
          mService.get(), mObjpath.get(), mInterface.get(), mMethod.get()));

  if (!msg) {
    return NS_ERROR_FAILURE;
  }
  dbus_message_set_no_reply(msg, true);

  DBusMessageIter iter;
  dbus_message_iter_init_append(msg, &iter);
  dbus_message_iter_append_basic(&iter, DBUS_TYPE_STRING, &uri);

  if (dbus_connection_send(connection.get(), msg, nullptr)) {
    dbus_connection_flush(connection.get());
  } else {
    return NS_ERROR_FAILURE;
  }
  return NS_OK;
}

////////////////////////////////////////////////////////////////////////////////
//// nsIDBusHandlerApp

NS_IMETHODIMP nsDBusHandlerApp::GetService(nsACString &aService) {
  aService.Assign(mService);
  return NS_OK;
}

NS_IMETHODIMP nsDBusHandlerApp::SetService(const nsACString &aService) {
  mService.Assign(aService);
  return NS_OK;
}

NS_IMETHODIMP nsDBusHandlerApp::GetMethod(nsACString &aMethod) {
  aMethod.Assign(mMethod);
  return NS_OK;
}

NS_IMETHODIMP nsDBusHandlerApp::SetMethod(const nsACString &aMethod) {
  mMethod.Assign(aMethod);
  return NS_OK;
}

NS_IMETHODIMP nsDBusHandlerApp::GetDBusInterface(nsACString &aInterface) {
  aInterface.Assign(mInterface);
  return NS_OK;
}

NS_IMETHODIMP nsDBusHandlerApp::SetDBusInterface(const nsACString &aInterface) {
  mInterface.Assign(aInterface);
  return NS_OK;
}

NS_IMETHODIMP nsDBusHandlerApp::GetObjectPath(nsACString &aObjpath) {
  aObjpath.Assign(mObjpath);
  return NS_OK;
}

NS_IMETHODIMP nsDBusHandlerApp::SetObjectPath(const nsACString &aObjpath) {
  mObjpath.Assign(aObjpath);
  return NS_OK;
}