util: split platform-specific NetworkMonitor backends into separate files
In preparation for a major overhaul of the rtnetlink implementation.
Change-Id: Iab660ab4bceb0f06db01a31f264cdfe0b7cdf077
Refs: #3353
diff --git a/src/util/network-monitor.cpp b/src/util/network-monitor.cpp
index 8f7b1f9..a12e373 100644
--- a/src/util/network-monitor.cpp
+++ b/src/util/network-monitor.cpp
@@ -1,6 +1,6 @@
/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/**
- * Copyright (c) 2013-2015 Regents of the University of California.
+ * Copyright (c) 2013-2016 Regents of the University of California.
*
* This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
*
@@ -17,238 +17,44 @@
* <http://www.gnu.org/licenses/>.
*
* See AUTHORS.md for complete list of ndn-cxx authors and contributors.
- *
- *
- * Parts of this implementation is based on daemondo command of MacPorts
- * (https://www.macports.org/):
- *
- * Copyright (c) 2005-2007 James Berry <jberry@macports.org>
- * All rights reserved.
- *
- * 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 name of The MacPorts Project 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 OWNER 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.
*/
+#include "network-monitor.hpp"
+
#include "ndn-cxx-config.hpp"
-#include "network-monitor.hpp"
-#include "scheduler.hpp"
-#include "scheduler-scoped-event-id.hpp"
-
#if defined(NDN_CXX_HAVE_COREFOUNDATION_COREFOUNDATION_H)
-
-#include <CoreFoundation/CoreFoundation.h>
-#include <SystemConfiguration/SystemConfiguration.h>
-
-namespace ndn {
-namespace util {
-
-class NetworkMonitor::Impl
-{
-public:
- Impl(boost::asio::io_service& io)
- : scheduler(io)
- , cfLoopEvent(scheduler)
- {
- }
-
- void
- scheduleCfLoop()
- {
- // poll each second for new events
- cfLoopEvent = scheduler.scheduleEvent(time::seconds(1), bind(&Impl::pollCfLoop, this));
- }
-
- static void
- afterNotificationCenterEvent(CFNotificationCenterRef center, void *observer, CFStringRef name,
- const void *object, CFDictionaryRef userInfo)
- {
- static_cast<NetworkMonitor*>(observer)->onNetworkStateChanged();
- }
-
-private:
-
- void
- pollCfLoop()
- {
- // this should dispatch ready events and exit
- CFRunLoopRunInMode(kCFRunLoopDefaultMode, 0, true);
- scheduleCfLoop();
- }
-
-private:
- Scheduler scheduler;
- scheduler::ScopedEventId cfLoopEvent;
-};
-
-NetworkMonitor::NetworkMonitor(boost::asio::io_service& io)
- : m_impl(new Impl(io))
-{
- m_impl->scheduleCfLoop();
-
- // Potentially useful System Configuration regex patterns:
- //
- // State:/Network/Interface/.*/Link
- // State:/Network/Interface/.*/IPv4
- // State:/Network/Interface/.*/IPv6
- //
- // State:/Network/Global/DNS
- // State:/Network/Global/IPv4
- //
- // Potentially useful notifications from Darwin Notify Center:
- //
- // com.apple.system.config.network_change
-
- // network change observations
- CFNotificationCenterAddObserver(CFNotificationCenterGetDarwinNotifyCenter(),
- static_cast<void*>(this),
- &NetworkMonitor::Impl::afterNotificationCenterEvent,
- CFSTR("com.apple.system.config.network_change"),
- nullptr, // object to observe
- CFNotificationSuspensionBehaviorDeliverImmediately);
-}
-
-NetworkMonitor::~NetworkMonitor()
-{
- CFNotificationCenterRemoveEveryObserver(CFNotificationCenterGetDarwinNotifyCenter(),
- static_cast<void*>(this));
-}
-
-} // namespace util
-} // namespace ndn
-
-// done with defined(NDN_CXX_HAVE_COREFOUNDATION_COREFOUNDATION_H)
+#include "detail/network-monitor-impl-osx.hpp"
#elif defined(NDN_CXX_HAVE_RTNETLINK)
-
-#include <boost/asio.hpp>
-
-#include <netinet/in.h>
-#include <linux/netlink.h>
-#include <linux/rtnetlink.h>
-#include <net/if.h>
-
-#include <cerrno>
-#include <cstring>
+#include "detail/network-monitor-impl-rtnl.hpp"
+#else
namespace ndn {
namespace util {
-const size_t NETLINK_BUFFER_SIZE = 4096;
-
class NetworkMonitor::Impl
{
public:
Impl(NetworkMonitor& nm, boost::asio::io_service& io)
- : m_nm(nm)
- , m_socket(io)
{
- int fd = ::socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
- if (fd < 0)
- BOOST_THROW_EXCEPTION(Error(std::string("Cannot create netlink socket (") +
- std::strerror(errno) + ")"));
-
- sockaddr_nl addr{};
- addr.nl_family = AF_NETLINK;
- addr.nl_groups = RTMGRP_LINK |
- RTMGRP_IPV4_IFADDR | RTMGRP_IPV4_ROUTE |
- RTMGRP_IPV6_IFADDR | RTMGRP_IPV6_ROUTE;
-
- if (::bind(fd, reinterpret_cast<sockaddr*>(&addr), sizeof(addr)) == -1) {
- BOOST_THROW_EXCEPTION(Error(std::string("Cannot bind on netlink socket (") +
- std::strerror(errno) + ")"));
- }
-
- m_socket.assign(fd);
-
- m_socket.async_read_some(boost::asio::buffer(m_buffer, NETLINK_BUFFER_SIZE),
- bind(&Impl::onReceiveRtNetlink, this, _1, _2));
+ BOOST_THROW_EXCEPTION(Error("Network monitoring is not supported on this platform"));
}
-
-private:
- void
- onReceiveRtNetlink(const boost::system::error_code& error, size_t nBytesReceived)
- {
- if (error) {
- return;
- }
-
- const nlmsghdr* nlh = reinterpret_cast<const nlmsghdr*>(m_buffer);
- while ((NLMSG_OK(nlh, nBytesReceived)) && (nlh->nlmsg_type != NLMSG_DONE)) {
- if (nlh->nlmsg_type == RTM_NEWADDR || nlh->nlmsg_type == RTM_DELADDR ||
- nlh->nlmsg_type == RTM_NEWLINK || nlh->nlmsg_type == RTM_DELLINK ||
- nlh->nlmsg_type == RTM_NEWROUTE || nlh->nlmsg_type == RTM_DELROUTE) {
- m_nm.onNetworkStateChanged();
- break;
- }
- nlh = NLMSG_NEXT(nlh, nBytesReceived);
- }
-
- m_socket.async_read_some(boost::asio::buffer(m_buffer, NETLINK_BUFFER_SIZE),
- bind(&Impl::onReceiveRtNetlink, this, _1, _2));
- }
-
-private:
- NetworkMonitor& m_nm;
- uint8_t m_buffer[NETLINK_BUFFER_SIZE];
-
- boost::asio::posix::stream_descriptor m_socket;
};
+} // namespace util
+} // namespace ndn
+#endif
+
+namespace ndn {
+namespace util {
NetworkMonitor::NetworkMonitor(boost::asio::io_service& io)
: m_impl(new Impl(*this, io))
{
}
-NetworkMonitor::~NetworkMonitor()
-{
-}
+NetworkMonitor::~NetworkMonitor() = default;
} // namespace util
} // namespace ndn
-
-// done with defined(NDN_CXX_HAVE_RTNETLINK)
-#else // do not support network monitoring operations
-
-namespace ndn {
-namespace util {
-
-class NetworkMonitor::Impl
-{
-};
-
-NetworkMonitor::NetworkMonitor(boost::asio::io_service&)
-{
- BOOST_THROW_EXCEPTION(Error("Network monitoring is not supported on this platform"));
-}
-
-NetworkMonitor::~NetworkMonitor()
-{
-}
-
-} // namespace util
-} // namespace ndn
-
-#endif // do not support network monitoring operations