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path: root/libs/kdbinder/kdbus/message.cpp
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/*
 * Copyright (C) 2016 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include <kdbus/message.h>
#include <kdbus/item.h>
#include <kdbus/globals.h>

#include <linux/kdbus.h>

#include <cstdlib>
#include <ctime>
#include <vector>

namespace android {
namespace kdbus {

uint64_t Message::dst_id() const {
  return msg_.get()->dst_id;
}

uint64_t Message::src_id() const {
  return msg_.get()->src_id;
}

uint64_t Message::cookie() const {
  return msg_.get()->cookie;
}

uint64_t Message::message_size(std::vector<Item *> items) {
  uint64_t size = sizeof(struct kdbus_msg);

  for (const auto& i : items) {
    size += i->size;
  }

  return size;
}

void Message::init(uint64_t dst_id, uint64_t src_id, uint64_t cookie,
                   uint64_t flags, std::vector<Item *> items) {
  msg_->flags = flags;
  msg_->size = size_;
  msg_->priority = 0;
  msg_->dst_id = dst_id;
  msg_->src_id = src_id;
  msg_->cookie = cookie;
  msg_->payload_type = KDBUS_PAYLOAD_DBUS;
  msg_->timeout_ns = 0;

  struct kdbus_item *n = msg_->items;

  for (const auto& i : items) {
    n = i->Queue(n);
  }
}

void MessageSync::init(uint64_t timeout_ms) {
  const uint64_t nanoseconds_per_second = 1000000000ULL;
  const uint64_t nanoseconds_per_millisecond = 1000000ULL;
  struct timespec now;

  clock_gettime(CLOCK_MONOTONIC_COARSE, &now);

  msg_->timeout_ns = now.tv_sec * nanoseconds_per_second
                     + now.tv_nsec
                     + timeout_ms * nanoseconds_per_millisecond;

  msg_->flags = KDBUS_MSG_EXPECT_REPLY;
}

uint64_t MessageReply::cookie_reply() const {
  return msg_.get()->cookie_reply;
}

void MessageReply::init(uint64_t cookie_reply) {
  msg_->cookie_reply = cookie_reply;
}

}  // namespace kdbus
}  // namespace android