/* binder.c
 *
 * Copyright 2024 Eugenio "g7" Paolantonio <me@medesimo.eu>
 *
 * You may use this file under the terms of the BSD license as follows:
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *   1. Redistributions of source code must retain the above copyright
 *      notice, this list of conditions and the following disclaimer.
 *   2. Redistributions in binary form must reproduce the above copyright
 *      notice, this list of conditions and the following disclaimer in the
 *      documentation and/or other materials provided with the distribution.
 *   3. Neither the names of the copyright holders nor the names of its
 *      contributors may be used to endorse or promote products derived
 *      from this software without specific prior written permission.

 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
 * THE POSSIBILITY OF SUCH DAMAGE.
 *
 * The views and conclusions contained in the software and documentation
 * are those of the authors and should not be interpreted as representing
 * any official policies, either expressed or implied.
 *
 * This file is based on the original integration in Droidian's feedbackd
 * variant, fbd-binder.c @ 7a6043d4794ae4d5df67b95a951f770a49191cdc
 *
 * Copyright 2022 Eugenio "g7" Paolantonio
 * Copyright 2021 Erfan Abdi
 *
 * The authors gave written permission for the license change for libdroid.
 *
 * SPDX-License-Identifier: BSD-3-Clause
 */

#define G_LOG_DOMAIN "binder"

#include "binder.h"

#include <gio/gio.h>

#include <errno.h>

gboolean
binder_status_is_ok (GBinderReader *reader)
{
  int status;

  if (gbinder_reader_read_int32 (reader, &status) && status == 0) {
    return TRUE;
  }

  return FALSE;
}

gboolean
binder_reply_status_is_ok (GBinderRemoteReply *reply)
{
  GBinderReader reader;

  gbinder_remote_reply_init_reader (reply, &reader);

  return binder_status_is_ok (&reader);
}

gboolean
binder_init (const char             *device,
             const char             *iface,
             const char             *fqname,
             GBinderServiceManager **service_manager,
             GBinderRemoteObject   **remote,
             GBinderClient         **client)
{


  *service_manager = gbinder_servicemanager_new (device);
  if (!*service_manager) {
    g_warning ("Failed to init servicemanager on %s", device);
    return FALSE;
  }

  *remote = gbinder_servicemanager_get_service_sync (*service_manager,
                                                     fqname, NULL);
  if (!*remote) {
    g_warning ("Failed to get hal service remote for %s", fqname);
    g_clear_object (&*service_manager);
    *service_manager = NULL;
    return FALSE;
  }

  *client = gbinder_client_new (*remote, iface);
  if (!*client) {
    g_warning ("Failed to get hal service client for %s", iface);
    g_clear_object (&*remote);
    g_clear_object (&*service_manager);
    return FALSE;
  }

  /* Ensure we keep a reference on the remote */
  gbinder_remote_object_ref (*remote);

  return TRUE;
}
